CN101003313A

CN101003313A - Flexible Tanks for Shipping Bulk Materials

Info

Publication number: CN101003313A
Application number: CN 200610162498
Authority: CN
Inventors: 查里斯·M·倪尔森
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-20
Filing date: 2006-11-24
Publication date: 2007-07-25

Abstract

The present invention relates generally to a flexible tank for storing and transporting bulk materials, comprising at least one bladder and an outer protective cover, wherein the bladder is a single extruded tube independently transversely heat sealed at its respective ends to form a bladder configuration, the bladder having at least one connecting strip at its respective ends, the connecting strip being used as an intermediate element between the transverse ends of the bladder and the transverse ends of the outer protective cover. The outer protective cover is also configured as a tubular construction having two open ends enclosing the bladder. The unconnected portion of the connecting strip is positioned between said front and rear layers of the open end of the outer protective cover and this portion is then sewn together. A plurality of end flap strips are also provided at one end of the outer protective cover to secure a portion of the flexible tank to the bulkhead. A second bladder, consisting of a separate extruded tube and independently heat sealed laterally at their respective ends, may be provided and positioned within the bladder with the connecting strips as a strain gauge in the event of a leak or rupture. The charging and discharging ports are disposed at the bottom of the flexible tank and the exhaust port is positioned at the top of the flexible tank. The invention does not have the longitudinal seal of the bladder and the bonding at the openings of the flexible tank layer for the inlet and outlet is achieved mechanically.

Description

Be used to transport the flexible tank of bulk material

Technical field

The present invention relates in general to a kind of flexible tank that is used to store and transport bulk material; comprise at least one soft shell and outer protective cover; wherein said soft shell is one and is subjected to transverse heat seal independently to form the independent extruded pipe of soft shell structure in its respective end; described soft shell has at least one connecting strap in its respective end, and it is intermediary element between the lateral ends of the lateral ends of described soft shell and outer protective cover that described connecting strap is used as.It is the tubular structure with two open ends of the described soft shell of encapsulation that described outer protective cover also is configured to.The not connecting bridge of connecting strap is positioned between the described anterior layer of open end of outer protective cover and the back layer and this part is sewn to together subsequently.Also an end of outer protecting cover is provided with a plurality of end flaps bands and is fastened on the next door with the part with flexible tank.Constitute and can be set up and be positioned in the described soft shell with connecting band by independent extruded pipe at second soft shell that their respective end are subjected to transverse heat seal independently, as leak or the situation of breaking under emergency measure.The present invention does not have the longitudinal sealing of soft shell and is implemented in the combination that the flexible tank layer is used for the opening part of import and outlet mechanically.Charging and discharge gate are arranged on the bottom of flexible tank and the top that exhausr port is positioned at flexible tank.Exhausr port can also have and is used to measure the flexible tank capacity and with the mechanism or the exhausr port of monitoring flexible tank canful capacity the device that comprises pipe can be housed, and described pipe is used for bulk freight is carried out easily and takes a sample easily when needs.

Background technology

Since the sixties, used single shell flexible tank shipment bulk material always.Yet when the flexible tank back is provided with single shell, they must by thick material for example government rubber make discharging when utilizing connecing of top location to set to put the sulfuration seam to be used to load.More than the soft shell of Xing Chenging is very heavy and very hard.The improvement of being done has promoted to utilize for example final thin Woven polyester Development of Materials of PVC and urethanes (Urethane) calendering of multiple flexible coating, and described material has ultrasonic seam welding and light plastic heatsealing and connects and join.To reduce reliability is that cost realizes that cost reduces.These materials and building method also require incompatible with the health of food service industry and pollution and have restriction, to joining the leakage that produces and set out without any emergency measure by for example connecing from flexible tank seam or welding.

In order to overcome above defective, invented flexible tank with bilayer or multilayer.Prior art has produced multiple such flexible tank, is used for storing, transports and load and transport bulk material particularly fluid or semifluid.For example authorize the U.S. Patent No. 3 of Jean Henri Alleaume and Denis MarcelHenri Hamel, 272,373 show a kind of device that is used to transport bulk fluid flow, and it comprises the thermal insulation layer that outer wall, close described outer wall inside face are arranged and is arranged in the interior double-walled container of thermal insulation layer; Described container comprises main jar and secondary jar that separates, and the space between wherein main jar and secondary jar is filled with unreactable gas or liquid.This invention is suitable near transporting cooling liquid gas by sea route or river road under the bar pressure.The sheet material that is used as main jar and secondary jar according to this invention is by dielectric bonding, be joined together by the hot air welding or by any other suitable mode.

Authorize the U.S. Patent No. 3 of Robert G.Mayworm, 939,972 show a kind of bag of being made by the single tubular portion of coextruded film, its shrinkage or be driven plain to form serialgram and to have the double walled structure of a pair of folding or stack subsequently along the line doubling that is parallel to the side with formation, interior lamination is by outer stacked package, and outer lamination comprises that heat sealable polymer and interior lamination comprise any poly-mer than the higher softening fusion temperature of outer lamination.In another embodiment the bag wall as first embodiment, be applied but excessively folding edge between the wall by pleating on the bag body, to limit independent end compartment.

U.S. Patent No. 5,508,051 has disclosed the process that a kind of bag that will be used to comprise flowable materials by membrane structure is prepared into tube element, and described membrane structure is made by having at the low temperature more and the material that more can obtain better sealing property under the short residence time.

U.S. Patent No. 6,626,312 have disclosed a kind of independently reservoir bag of internal layer, skin and interlayer that comprises, described internal layer, skin and interlayer link to each other with described internal layer with adhesives by a plurality of welding at inlet by a large amount of weldments or the vertical described layer that is connected and wraps of adhesives in edge, described internal layer comprises at least that a slice is three-layer co-extruded and moulds polyethylene and outer and interlayer is a nonwoven fabrics geotextile layer that described interlayer and outer dimension are littler than internal layer.The additional coating metal layer of shading and anti-gas and other materials infiltration is formed in the mode similar to other layers and between internal layer and interlayer in another embodiment, wherein said coating metal layer size than interlayer littler but size than internal layer Bao Gengda.Multiple-structure makes bag have tear resistance and prevents that gas from feeding internal layer or discharge from internal layer.But, the described invention that relates in above up-to-date prior art does not solve from sealing joints or charging and discharge gate and exhausr port and connects the defective of joining soldered or leak free around regional or some layers leakage or breaking and setting out, and causes soft shell to be constructed thus and tears easily and leak.

Therefore need the invention provides a kind of flexible tank, it does not apply aquaseal, adhesives, welding or other heat seal technology on can the longitudinal edge because of the pipe that adopts and is easy to generate and leaks and break in making flexible bladder, while can be easily and loads and discharge bulk material easily, and the invention provides a kind of straightforward procedure that bulk material discharges from flexible tank fully that improves.

Summary of the invention

Therefore, main purpose of the present invention provides a kind of be used to store and transport bulk material and the difficult flexible tank that leaks and break that produces.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein flexible bladder is a continuous extrusion pipe independently, requires not have the longitudinal sealing in the conventional pattern, overcomes seal pattern thus and loses efficacy.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein said flexible bladder can be born limiting weather conditions and be transported the mechanical damage that produces owing to uniting (inter-modal), and can under strained condition, not break, under the situation of not sacrificing rigidity, provide elasticity thus.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and the flexible bladder that does not wherein have any longitudinal seam has enough flexible to roll under the situation that flexible bladder is not caused breaking, leaking or destroy or folding.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein the additional flexibility soft shell can provide auxiliary volume as the expeditious measures under inner soft shell inefficacy situation.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein independently the soft shell structure can separately move soft shell, can make each soft shell be placed in the minimum stressed position of outside container made of steel thus when liquid product is housed.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein charging and discharge gate are positioned at the bottom, thereby can make the charging of bulk material and discharge is unattended, safety and easy.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein outer protective cover provides mechanical strength and prevents that soft shell is subjected to mechanical damage and wearing and tearing.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein outer protective cover with hard ware for example aluminium lamination press or have auxiliary part in conjunction with thereon, reduce oxygen thus and propagate on the sensitive product that is stored in the soft shell.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein outer protective cover is provided for the limiting structure to the pressure test of soft shell heat seal lateral ends seam.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein realizes being connected of soft shell and outer protective cover by the connecting strap that is arranged on two lateral ends, provides enough connections can not sacrifice elasticity simultaneously thus.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material; outer protective cover at one end has a plurality of end flaps bands that are used for fixing on the next door; be kept upright with the end flaps of guaranteeing outer protective cover in the process of padding, prevent that described end flaps from first being filled and heave and hinder the filling place whole flexible tank on the container ground thus.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, can prevent that wherein soft shell is slipped to the bottom when an end of flexible tank remains in stand up position.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and it has reduced labour cost basically and has reduced in order to load or to discharge bulk material fully and adopt additional machine, equipment or other devices.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein soft shell be used in the charging that contacts with bulk material and each parts that connects the combo part on discharge gate and the exhausr port and make by food grade materials.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein soft shell is made by recycled material.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material; wherein the described non-heat seal technology that adopted of connecing on the layer that the combo part is connected flexible tank can be made valve be pushed in the container door closing course to get back in the flexible tank body; and can not produce any stress to the zone around connecting, thus to valve in transit with connect the combo part extra protection is provided.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein be used to feed and discharge gate corresponding connects the combo part and comprise that dicyclo machinery connects and join, eliminated thus and the seal pattern of the conventional assembly that adopts heat or the aquaseal relevant problem that lost efficacy.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and wherein exhausr port has the mechanism that is used to measure the canful capacity, helps to monitor exactly the canful capacity thus.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, wherein exhausr port also is equipped with and has from the device of exhausr port to the jar of charging and discharge gate extension, thereby can take a sample to the content of flexible tank quickly and easily.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and it provides a kind of being used for not adopting any power operation device or setting and improve the quick and simple method of discharging bulk material fully from flexible tank under the situation of any burdensome task.

Another object of the present invention provides a kind of flexible tank that is used to store and transport bulk material, and its hollow flexible tank can be folded into less than a cubic meter, significantly reduces storage area and cost thus.

These and other purposes of the present invention realize that by the present invention the present invention provides in a preferred embodiment,

A kind of flexible tank (44) that is used to store and transport bulk material, described flexible tank comprises:

At least one first soft shell (8A), it is extruded into the first continuous independent pipe (2A), has at least one and is used for first opening (16A) that bulk material enters and discharge and second opening (18A) and its open end (4) (6) that at least one is used for air exhaustion had at least one connecting strap (14) before by transverse sealing;

At least one second soft shell (8B), it is extruded into the first continuous independent pipe (2B), have at least one and be used for first opening (16B) that bulk material enters and discharge and second opening (18B) that at least one is used for air exhaustion and have by transverse sealing to limit the open end (20) (22) of enclosure space, described second soft shell (8B) is positioned in described first soft shell (8A);

At least one outer protective cover (36); it is configured to is encapsulation described soft shell (8A) independent bag (8B); having at least one is used for first opening (16C) that bulk material enters and discharge and second opening (18C) that at least one is used for air exhaustion and its lateral ends (28A) and (32A) is sewn to described connecting strap (14)

At least one connects combo part (60), its described first opening (16A) (16B) (16C) locate described outer protective cover (36) and first and second soft shells (8A) layer (8B) is combined;

At least one connects combo part (60), its described second opening (18A) (18B) (18C) locate described outer protective cover (36) and first and second soft shells (8A) layer (8B) is combined.

In another embodiment, the invention provides,

At least one first soft shell (8A), it is extruded into the first continuous independent pipe (2A), has at least one and is used for first opening (16A) that bulk material enters and discharge and second opening (18A) that at least one is used for air exhaustion and its open end (4) (6) and was had at least one connecting strap (14) by transverse sealing before limiting the enclose inside space;

At least one outer protective cover (36); it is configured to encapsulate the independent bag of described first soft shell (8A); having at least one is used for first opening (16C) that bulk material enters and discharge and second opening (18C) that at least one is used for air exhaustion and its lateral ends (28A) separately and (32A) is sewn to described connecting strap (14)

At least one connects combo part (60), and it (16C) locates the layer of described outer protective cover (36) and described first soft shell (8A) is combined at described first opening (16A);

At least one connects combo part (60), and it (18C) locates the layer of described outer protective cover (36) and described first soft shell (8A) is combined at described second opening (18A).

Description of drawings

After research detailed description in conjunction with the accompanying drawings, will recognize that other aspects of the present invention and their advantage, wherein:

Fig. 1 is the 3-D view that is used to make the continuous extrusion pipe of first soft shell.

Fig. 2 represent continuous extrusion pipe shown in Figure 1 by transverse sealing to have the two dimension view of at least one connecting strap before forming described first soft shell in each lateral ends.

Fig. 3 is the 3-D view that is used to make the continuous extrusion pipe of second soft shell.

Fig. 4 is illustrated in two ends by the two dimension view of transverse sealing with the continuous extrusion pipe that forms described second soft shell.

Fig. 5 represents to be positioned at the two dimension view of described second soft shell in first soft shell.

Fig. 6 represents along the part sectional view of the intercepting of the line A-A among Fig. 5.

Fig. 7 is used to construct the view of the plain film material of outer protective cover.

Fig. 8 represents to form two vertical sides of the plain film of tubular structure.

Fig. 9 is around described first soft shell location and at one end has the view of the outer protective cover that is used to be fastened on a plurality of end flaps bands on the next door.

Figure 10 is the view of the empty flexible tank of the present invention, and the one end is fastened on the next door simultaneously that remainder is placed on the container bottoms.

Figure 11 is the view of flexible tank, and how expression end of flexible tank of the present invention when not being fastened on the next door in the loading operation process is at first filled and heaved.

Figure 12 is the local longitudinal sectional drawing of preferred implementation, a plurality of layers and their the mutual correspondence position of expression flexible tank.

Figure 13 is the partial top view that was arranged in the flexible tank on the container before the end flaps band is fastened on the next door.

Figure 14 is the view from container visual observation flexible tank, and the end flaps band of expression flexible tank is fastened on the next door.

Figure 15 is used to that corresponding described first and second openings on the layer that is limited to flexible tank are carried out the bonded assembly two-piece type to connect the combo part.

The two-piece type bolt that Figure 16 represents to be clamped in described first and second openings on the layer that is defined in flexible tank connects the combo part.

Figure 17 is the section-drawing along the line B-B of Figure 15.

Figure 18 is the planar view of Figure 15.

Figure 19 represents to make air to connect the combo part by, the three-in-one exhausr port of measuring tankage size and goods sampling.

Figure 20 is the local longitudinal sectional drawing of another embodiment, and expression has the flexible tank of single soft shell and outer protective cover and represents soft shell and the mutual cooresponding position of outer protective cover relation.

Figure 21 is the planar view that had the part of the flexible tank that strengthens sheet before installation connects the combo part.

The detailed description of accompanying drawing

From following description of the preferred embodiment of the present invention, will more be expressly understood the present invention, described description only be with reference to the disproportionate accompanying drawing of drawing by way of example mode provide.

With reference to Fig. 1 and 2, Fig. 1 has two open ends 4, the 3-D view of 6 the first extruded pipe 2A, Fig. 2 is two open ends 4 by the described first pipe 2A of transverse heat seal, the two dimension view of the first flexible tank 8A of 6 structures, two open ends of described first pipe also had at least one connecting strap 14 at the seam of being represented by Reference numeral 10A and 12A before heat seal.The described first pipe 2A as shown in Figure 1 forms by extrusion process, makes continuous tubular structure not have any longitudinal seam.For the described first pipe 2A is configured to the first soft shell 8A, at least one connecting strap 14 and described anterior layer and back is set between the anterior layer 4A of described first end 4 and back layer 4B layer is in the same place by transverse heat seal at the seam of representing by Reference numeral 10A.At least one connecting strap 14 and described anterior layer and back layer are set in a similar fashion at the seam of representing by Reference numeral 12A be in the same place by transverse heat seal (referring to Fig. 2) between the anterior layer 6A of described second end 6 and back layer 6B.The first opening 16A is set on the described first flexible bladder 8A and the second opening 18A is set for the discharge of air on the first flexible bladder 8A in order to load and discharge bulk material.

With reference to Fig. 3 and 4, Fig. 3 has two open ends 20, the 3-D view of 22 the second extruded pipe 2B and Fig. 4 represent by at the seam of representing by Reference numeral 10B and 12B to described two open end 20,22 transverse heat seal of the described second pipe 2B and the two dimension view of the second flexible bladder 8B that constructs.The second pipe 2B also forms by extrusion process, thereby can not had the continuous tubular structure of any longitudinal seam.For the described second pipe 2B being configured for holding the soft shell of bulk material, the anterior layer 20A of described first end 20 of the second pipe 2B and the anterior layer 22A of back layer 20B and described second end 22 and back layer 22B be by Reference numeral 10B, and the seam that 12B represents is by transverse heat seal (referring to Fig. 4) together.The first opening 16B is being set on the described second flexible bladder 8B and on the described second flexible bladder 8B, the second opening 18B is being set for the discharge of air in order to load and discharge bulk material.Preferably the first flexible bladder 8A is identical with first and second opening sizes of the second flexible bladder 8B.Described opening 16B and the 18B of the second soft shell 8B also are defined as follows and locate, in the time of promptly in the second soft shell 8B is positioned at the first soft shell 8A, and the opening 16B of the second soft shell 8B, the opening 16A of the 18B and the first soft shell 8A and 18A aim at.

With reference to Fig. 5, the described second soft shell 8B is positioned at the two dimension view in the first soft shell 8A.Preferable width identical but on the length than the second soft shell 8B the longer first soft shell 8A around second soft shell 8B location before the first soft shell 8A is by transverse sealing, second soft shell is close to encapsulation.Implementing transverse heat seal with by Reference numeral 10A, the seam that 12A represents is with described open end 4,6 be sealed on the connecting strap 14 before at least one connecting strap 14 each all be arranged on the open end 4 of the first pipe 2A, 6 anterior layer 4A, 6A and back layer 4B, between the 6B, utilize thus from the outstanding part of the described first soft shell 8A and form the first soft shell 8A (referring to Fig. 2 and 5) by the connecting strap of Reference numeral 24 expressions.Preferably make as the connecting strap 14 of aiming at and keeping bar, but can adopt other suitable material and sizes identical with the function of connecting strap 14 by being of a size of 5 mil thick, 6 inches wide and 12.5 feet long polyethylenes.As the intermediary element (shown in Figure 6) that the first soft shell 8A is connected on the outer protective cover 36, thus to the layer that is nested with mutually move freely the restriction that provides enough fully, can allow enough elasticities simultaneously.This point is not resolved in the prior art and soft shell wherein can move freely everywhere unrestricted.

Preferably first and second extrusion moldings are managed 2A continuously, 2B by food grade materials for example polyethylene make.Each single

soft shell

8A, 8B preferably has the thickness of 15 Mills.Preferably as two soft shell 8A, the accumulative total intensity of 8B is 30 Mills, is nested with mutually simultaneously not exclusively by being provided with that interconnective independent soft shell can provide enough elasticities under the situation of not sacrificing rigidity.But, should be understood that the corresponding first and second soft shell 8A, the scope of the thickness of 8B can also be Mill, 12 Mill to 18 and needn't be limited in 15 Mills, the invention has the advantages that

flexible bladder

8A, 8B is not easy to leak or break.

Compare the present invention with the pattern of routine and need not the first and second pipe 2A, 2B carries out any longitudinal sealing to alleviating and be favourable in the relevant problem of the seal pattern inefficacy at those longitudinal seam places that cause leaking or break.

With reference to Fig. 7,8 and 9, Fig. 7 is the view that is used to construct the flat piece of material 26 of outer protective cover 36; Fig. 8 represents that two vertical sides of two similar plain films 26 sealed together and Fig. 9 represent to encapsulate soft shell and have the outer protective cover 36 of at least two end flaps bands 38.Outer protective cover 36 is preferably made by the woven polypropylene that structural strength is provided, and it can apply with preferred 1.0 Mill aluminum metal or auxiliary part with combination with in shipment or transport and prevent in the process that bulk material is subjected to invading of oxygen and moves.Outer protective cover 36 sizes are bigger and encapsulate the first soft shell 8A than the first soft shell 8A.Outer protective cover 36 is made by two material piece 26, and each sheet 26 preferably has by Reference numeral 28,30, four sides of 32,34 expressions.In order to be configured to encapsulate the first and second soft shell 8A with described 26, the bag of 8B, described 26 longer side 30,34 be sealed together by the seam of Reference numeral 40 expressions, forms thus to have two open end 28A, the tubular structure of 32A.The first soft shell 8A that locatees the second soft shell 8B and have at least one connecting strap 14 is the open end 28A of outer protecting cover 36 subsequently, and the anterior layer of 32A and back layer and connecting strap are stitched together from the outstanding part of lateral ends by the first soft shell 8A of Reference numeral 24 expressions and are closed by outer protective cover 36 before.Be slipped to the bottom when being in stand up position having guaranteed that by this stitching of the seam of Reference numeral 50 expression one end-end flaps 42 that the first soft shell 8A can outer protecting cover 36 is held by described end flaps band 38, as hereinafter in greater detail.

With reference to Fig. 9,10 and 11.As shown in Figures 9 and 10, outer protective cover 36 also externally an end have at least two end flaps bands 38, the end flaps 42 of outer protective cover 36 can be fastened on the next door 52.Described end flaps band 38 is fastened on can make flexible tank 44 remain in stand up position for charging shown in Figure 10 and discharge on the next door 52.The present invention guarantees

flexible bladder

8A, and 8B can not be slipped to the bottom and hinder charging and discharge operation in charging and discharge process.Described layout as shown in figure 10 guarantees that also the end flaps 42 of outer protective cover 36 remains in stand up position in underfilling operation.If do not remain in such position, described end flaps 42 will at first fill and heave, and has hindered the filling that places the whole flexible tank 44 on container 54 bottom surfaces thus as shown in figure 11.Described in addition layout also guarantees to feed except the raising bulk material is discharged from the second soft shell 8B fully and discharge gate can not be subjected to soft shell 8A, the obstruction of 8B is not because flexible tank 44 with under the situation of any interference of folding generation of soft shell can rolled as dentifrice tube to extrude remaining bulk material easily.

Preferably the outer protective cover of being made by woven polypropylene 36 not only provides structural strength but also conduct to soft shell 8A, the limiting structure of the pressure test of 8B heat seal lateral ends seam.120% test is carried out in permission on the unit of each manufacturing.This point by adopt outer protective cover 36 as restraint device with to the first and second soft shell 8A, the sealing of the lateral ends of 8B is pressurized to 120% of their actual design abilities and realizes.Although what utilize in the present invention is the heat seal technology, aforesaid test will guarantee at described soft shell 8A, and it is very little and hardly may that the transverse seam place of 8B produces the possibility of leaking or breaking.

With reference to Figure 12, the local longitudinal sectional drawing of preferred implementation, the first and second soft shell 8A of expression outer protective cover 36 and

flexible tank

44,8B and their relative positions relation and connecting strap 14 and end flaps 38 being connected at flexible tank 44 1 ends.It is evident that the first and second

soft shell

8A, 8B respectively along the weld line shown in Reference numeral 10A and the 10B by transverse sealing.Can also see that the weld line that connecting strap 14 is represented along Reference numeral 10A is welded on the first pipe 2A lateral ends, 4 these ends, a part that stays connecting strap 14 is given prominence to from described lateral ends 4.The end flaps 42 of outer protective cover 36 is sewn on the part of outshot 24 of described connecting strap 14 and cuts its redundance at the seam by Reference numeral 50 expression.The end flaps band 38 that is provided with on the outside of outer protecting cover 36 also is connected on the outer protective cover in the stitching by the seam of the Reference numeral 50 expression layer by passing described outer protective cover 36.Describedly be used to be fastened on the next door 52 with described for above paragraph and keep flexible tank 44 enough parts to be in stand up position by the purpose shown in Figure 10 and 11 with 38.

Figure 13 is the partial top view that was arranged in the flexible tank 44 on the container 54 before end flaps band 38 is fastened on the next door.When described when being with 38 to be fastened on the next door 52; have described connecting strap 14 (not shown in Figure 13) and further utilize the end flaps 42 of the outer protective cover 36 that a plurality of end flaps bands 38 are sewn to be positioned near container 54 imports at the seam by Reference numeral 50 expression, the import that described next door is arranged on container 54 remains in appropriate location in the container 54 to make flexible tank 44 when being full of bulk material.

Figure 14 is the view from the flexible tank 44 of container 54 visual observations, and expression end flaps band 38 is fastened on the next door 52.Conventional next door must be improved by the top framework boring 46 of passing the next door, makes end flaps band 38 have the screw thread that passes described hole 46 and is combined on the next door.This layout guarantees that an end of flexible tank 44 is kept upright in underfilling operation so that the filling of whole flexible tank 44, as mentioned above and shown in Figure 10 and 11.The part that flexible tank 44 is lifted to stand up position also correspondingly will be feeded and its bottom sides is transferred to be easy to charging and discharge from the bottom position of flexible tank 44 in the position of discharge gate 56.Exhausr port 58 is positioned at the top of flexible tank 44.

Heat seal connects the accurate utilization that the technology of joining relies on heat, and pressure and time are in strict controlled environment.If inaccuracy ground is carried out, can pass multilayer and weld to connect to be equipped with to make to connect and join attached to joining on the relative tank skin with connecing, and this is unconspicuous to welding person.In addition in the charging process of bulk liquid goods, form between the soft shell liquid friction and the actual load on interior thin soft shell will make its with connect partition from.This is alarming, because with regard to discharge operation, even product is received at this moment and remains between the thin-walled and product does not leak in the container and can not be discharged from.When product reaches low-down level in the discharge operating process, the thin-walled of soft shell allow to be inhaled into discharge connect join in.Can on soft shell, shrink a hole like this and cause leaking or overflowing.Owing to the problem relevant with the heat seal mode failures even and in order to eliminate relative quality Control, important aspect of the present invention is to avoid adopting insecure heat seal to connect to join each layer opening that technology connects flexible tank.

With reference to Figure 15 and 16; the two-piece type bolt connects the vertical cross section of combo part 60; described assembly is used at the corresponding first opening 16A in order to load and to discharge bulk material and limiting for the discharge of air; 16B; the 16C and the second opening 18A; 18B, the layer (the just described first soft shell 8A, the second soft shell 8B and outer protective cover 36) of the flexible tank 44 of the last connection of 18C preferred implementation.Charging and discharge gate connect joins 60 and preferably includes two-piece type machinery and connect and join parts, just has compression member 66A, 66B, 68A, blind bolt coupling collar 62 and the outer clamping ring 64 of 68B.The first opening 16A of the layer of flexible tank 44 preferably, 16B, the 16C and the second opening 18A, 18B, 18C is littler than the described centre hole that connects combo part 60.Compression member 66A when described blind bolt coupling collar 62, the compression member 66B of 68A and described outer clamping ring 64, when 68B is clamped together mechanically at described first and second opening parts, described blind bolt coupling collar 62 and described outside between the clamping ring 64 equivalent layer of flexible tank 44 form from compression seal.Pressuring action makes corresponding compression member 66A, and 66B, 68A, 68B can penetrate described layer and prevent the equivalent layer disengagement in conjunction with compression.In order to improve safety, preferably for example bolt 72 of known fastener is set on the combo part 60 described connecing.Each centre hole 70A all of described blind bolt coupling collar 62 and outer clamping ring 64,70B, but the centre hole 70A of described blind bolt coupling collar 62 is very little and have a screw thread on circumference, make when described blind bolt coupling collar 62 and clamping ring 64 all are clamped together, the centre hole 70A that described blind bolt coupling collar 62 has screw thread plays the effect of holding conventional valve (not shown), and charging and discharge ozzle can be engaged to feed and discharge operation (also referring to Figure 17 and 18) thus.

Figure 17 represents along the horizontal sectional drawing of the intercepting of the line B-B among Figure 15.The blind bolt coupling collar 62 that bulk material formation described and in the soft shell contacts has threaded 74 centre hole 70A.Described blind bolt coupling collar 62 also have around its centre hole 70A circumference setting and complementally hold as its first compression member described outside the annular recess 66A of the first compression member 66B of clamping ring 64.Described blind bolt coupling collar 62 also has the annular protrusion 68A around described annular recess 66A, and it complementally is pressed into the second compression member 68B of described outer clamping ring 64 as second compression member.Described ring 62 has a plurality of flange parts 76, and described flange part comprises that a plurality of grooves 78 are used to hold a plurality of bolts 72 to improve sealing.Preferably described blind bolt coupling collar 62 is made by corrosion-resistant steel, but can adopt other materials when transporting the non-food stuff material, its advantage is that two-piece type as the described ring 62 of one of parts connects only needs mechanical seal of combo part (also referring to Figure 15 and 16) according to the present invention.

Figure 18 is the view that obtains from Figure 15 top view, represents the described outer clamping ring 64 described first opening 16A on the equivalent layer that is defined in flexible tank 44 subsequently, 16B, and the 16C and the second opening 18A, 18B, the 18C place is clamped on the described blind bolt coupling collar 62.Described outer clamping ring 64 has centre hole 70B, and its size is bigger than the centre hole 70A of described blind bolt coupling collar 62.Similar with described blind bolt coupling collar 62, described outer clamping ring 64 has around the setting of its centre hole 70B circumference with the annular protrusion 66B in the first compression member 66B that complementally is pressed into described blind bolt coupling collar 62 as its first compression member, and around its described annular protrusion 66B circumference setting complementally to hold the annular recess 68B of the second compression member 68A of described blind bolt coupling collar 62 as its second compression member.Described outer clamping ring 64 also has a plurality of holes 79, is used to hold a plurality of bolts 72 to improve sealing.Preferably outer clamping ring 64 is made of aluminum, but can adopt other materials, and its advantage is that two-piece type as the outer clamping ring 64 of one of parts connects only needs mechanical seal of combo part (also referring to Figure 15 and 16) according to the present invention.

Figure 19 represents to have and can be used for air and connect combo part 80 by, the exhausr port of measuring the three-in-one unit of tankage size and goods sampling.Exhausr port connects combo part 80 load pad indicator 82 can be housed in addition as shown in the figure, and it comprises L shaped bend pipe 84 and freeing pipe 86, and whether described indicating device can index pot be full capacity when internal pressure surpasses the internal pressure of 0.5 pound per square inch.This indicates by the liquid that flows in the freeing pipe 86, and described freeing pipe is by enough light is passed to provide visual material to make.In order easily and easily bulk material to be taken a sample, can form sample tap 88 by conduit 90, wherein an end of conduit 90 inserts in the freeing pipe 86 simultaneously that the other ends are connected on the flexible pipe 92, described flexible pipe can by in the end but the thread ending cover 94 that does not link to each other with conduit 90 seal.Flexible pipe 92 long enoughs preferably, thus can be convenient to sampling.Also testing above obtaining under the actual operating conditions by adopting vacuum chamber to make exhaust connect combo part 80.

In another embodiment of the present invention, only there is the first soft shell 8A to use with outer protective cover 36 in order to construct flexible tank 44.The first soft shell 8A plays the effect of the second soft shell 8B that holds bulk material in the present embodiment.Figure 20 represents to have the flexible tank 44 of described first soft shell 8A and outer protective cover 36 and the local longitudinal sectional drawing of the described embodiment that their mutual positions concern.Adopt described two elements machinery to connect the layer that combo part 60 connects flexible tanks 44, that is to say describe in a preferred embodiment be provided with in a similar manner at the described first opening 16A, the 16C and the second opening 18A, the described first soft shell 8A of 18C and outer protective tube 36.In brief, described embodiment is similar with above-described preferred implementation in every respect, except the second soft shell 8B.But, since described embodiment comprise single soft shell just the first soft shell 8A, therefore have and the first opening 16A, the 16C and the second opening 18A, the center of 18C same size punchinges, preferably be provided in two-piece type by the enhancing sheet made from described soft shell 8A identical materials and have identical thickness with it 96 connects combo part 60 and is clamped at mechanically before the described opening part respectively and the described first opening 16A, the 16C and the second opening 18A, 18C aims at.The extra play that strengthens sheet 96 forms and described first soft shell 8A and outer protective cover 36 combinations provide enough thickness to realize effective seal, prevent the equivalent layer disengagement thus.

Though described charging door and discharge gate 56 have been described in some details and have illustrated is to be positioned at flexible tank 44 bottoms, but described position is not the inevitable unique position that is allowed, can use other positions for example top or sidepiece, its advantage is that the present invention can be safely and easily load bulk material according to the present invention.

Though only have single charging and discharge gate 56 and single exhausr port 58 to be described and to have illustrated, but can adopt charging and discharge gate and exhausr port more than one, its advantage is that the present invention can provide and is not easy the flexible tank that leaks or break according to the present invention.

Although disclose the advantage of preferred implementation of the present invention and they in above detailed description, the present invention is not limited thereto, but only limited by the spirit and scope of accessory claim.

Claims

1. flexible tank (44) that is used to store and transport bulk material, described flexible tank comprises:

At least one first soft shell (8A), it is extruded into first pipe (2A) continuously, has at least one and is used for first opening (16A) that bulk material enters and discharge and second opening (18A) that at least one is used for air exhaustion and its open end (4) (6) and is had at least one connecting strap (14) by transverse sealing before with the qualification enclosure space;

At least one outer protective cover (36); it is configured to is the independent bag of described first soft shell of encapsulation (8A); having at least one is used for first opening (16C) that bulk material enters and discharge and second opening (18C) that at least one is used for air exhaustion and its lateral ends (28A) separately and (32A) is sewn to described connecting strap (14)

At least one first connects combo part (60), and it (16C) locates the layer of described outer protective cover (36) and described first soft shell (8A) is combined at described first opening (16A);

At least one first connects combo part (60), and it (18C) locates the layer of described outer protective cover (36) and described first soft shell (8A) is combined at described second opening (18A).

2. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, also comprises:

At least one second soft shell (8B), it is extruded into the second continuous single pipe (2B), it is had at least one by transverse sealing with the open end (20) (22) that limits enclosure space and is used for first opening (16B) that bulk material enters and discharge and second opening (18B) that at least one is used for air exhaustion, and described second soft shell (8B) is positioned in described first soft shell (8A), and described second soft shell (8B) has by described combo part (60) described first opening of bonded assembly (16B) and second opening (18B) of connecing.

3. as claim 1 and the 2 described flexible tanks (44) that are used to store and transport bulk material, it is characterized in that, do not have soft shell (8A) longitudinal sealing (8B).

4. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that described first soft shell (8A) is connected on the described outer protective cover (36) by at least one connecting strap (14) in its respective end.

5. as claim 1 and the 4 described flexible tanks (44) that are used to store and transport bulk material; it is characterized in that, upward described first soft shell (8A) is connected on the described outer protective cover (36) by described outer protective cover (36) being sewn to described connecting strap (14).

6. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that outer protective cover (36) is made by impermeable material.

7. outer protective cover as claimed in claim 6 (36) is characterized in that, described outer protective cover (36) is made by woven polypropylene.

8. as claim 6 and 7 described outer protective covers (36), it is characterized in that, utilize aluminium lamination to press described outer protective cover (36).

9. as claim 6 and 7 described outer protective covers (36), it is characterized in that described outer protective cover (36) has combination oxygen barrier etcetera thereon.

10. as claim 1 and the 2 described flexible tanks (44) that are used to store and transport bulk material, it is characterized in that, described soft shell (8A) (8B) be the flexible tube (2A) that forms by extrusion process (2B).

11. flexible bladder as claimed in claim 10 is characterized in that, soft shell (8A) (8B) is made by polyethylene.

12. flexible bladder as claimed in claim 10 is characterized in that, soft shell (8A) respective thickness (8B) is 15 Mills.

13. flexible bladder as claimed in claim 10 is characterized in that, each soft shell (8A) thickness (8B) is in the scope of Mill, 12 Mill to 18.

14. flexible bladder as claimed in claim 10 is characterized in that, described soft shell (8A) (8B) is made by food grade materials.

15. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that at least two end flaps bands (38) are fixed on the outer protective cover (36).

16. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, described end flaps band (38) is by on the sutured outer protecting cover (36).

17. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that the free end of end flaps band (38) is fastened on the next door (52).

18. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, is used for charging and discharge gate (56) corresponding and connects to be equipped with and to be used for connecing of air exhaustion and join (58) and connect combo part (60) by two-piece type and form.

19. two-piece type as claimed in claim 18 connects the combo part, it is characterized in that, comprises blind bolt coupling collar (62) and outer clamping ring (66).

20. connect the combo part, it is characterized in that described two-piece type connects combo part (60) and connects mechanically and join as claim 18 and 19 described two-piece types.

21. connect the combo part as claim 18 and 19 described two-piece types, it is characterized in that, described two-piece type connect combo part (60) by bolt in conjunction with and bear torque to realize the linerless compression seal.

22. connect combo part (60) as claim 18,19,20 and 21 described two-piece types, it is characterized in that, connect by described two-piece type and join described blind bolt coupling collar (62) and the described outer clamping ring (64) that (60) be clamped together respectively and form from compression seal.

23. connect combo part (60), it is characterized in that described blind bolt coupling collar (62) and described outer clamping ring (64) are made by food grade materials as claim 18,19,20 and 21 described two-piece types.

24. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, the exhaust that is used for air exhaustion connects combo part (80) and also has charging and the pad indicator (82) that can measure the canful capacity.

25. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, the exhaust that is used for air exhaustion connects combo part (80) and also has the device that can carry out the bulk material sampling.

26. the device that can carry out the bulk material sampling as claimed in claim 25 is characterized in that, comprises the conduit (90), flexible pipe (92) and the thread ending cover (94) that are inserted in the freeing pipe (86).

27. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, flexible tank (44) is perpendicular positioning on being fastened to next door (52) time with the part of end flaps band (38).

28. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 2 is characterized in that, second soft shell (8B) is identical with first soft shell (8A) width.

29. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1; it is characterized in that; before the layer with first soft shell (8A) and outer protective cover (36) combines, also be used for corresponding first opening (16A) that bulk material enters and discharge (16C) and second opening (18A) that is used for air exhaustion locate to be provided with enhancing sheet with central opening.

30. the flexible tank (44) that is used to store and transport bulk material as claimed in claim 1 is characterized in that, flexible tank (44) can be rolled to discharge bulk material fully from the end (42) with end flaps band (38).