CN105690592A - Pressing and exhausting device for mixing equipment - Google Patents
Pressing and exhausting device for mixing equipment Download PDFInfo
- Publication number
- CN105690592A CN105690592A CN201610051457.4A CN201610051457A CN105690592A CN 105690592 A CN105690592 A CN 105690592A CN 201610051457 A CN201610051457 A CN 201610051457A CN 105690592 A CN105690592 A CN 105690592A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- machine barrel
- exhaust apparatus
- binder
- right screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/484—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with two shafts provided with screws, e.g. one screw being shorter than the other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
- B29B7/489—Screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
- B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a pressing and exhausting device for mixing equipment. The pressing and exhausting device comprises a machine barrel communicating with an exhaust outlet of the mixing equipment, an exhaust pipe arranged on the side wall of the machine barrel and used for connecting the interior of the machine barrel with a vacuum pump, a left screw and a right screw, wherein the left screw and the right screw are arranged inside the machine barrel and are opposite in thread extension direction, and the left screw and the right screw rotate in the respective thread extension directions. The pressing and exhausting device for the mixing equipment can completely exhaust gas generated in the mixing process and prevent blockage of the exhaust outlet and the exhaust pipe.
Description
Technical field
The present invention relates to polymer processing equipment technical field, particularly to a kind of binder exhaust apparatus, this device is used for the polymer mixing devolatilization at mixing facilities。
Background technology
In the blending and modifying process of polymer, the small-molecule substance in elimination polymer, it is called the mixing devolatilization processes of polymer。Devolatilization processes is the key link in polymer mixing process, the performance of the degree direct influence product material of devolatilization。
The method that current mixing devolatilization mainly adopts has nature devolatilization and evacuation devolatilization system。Natural devolatilization is used primarily in devolatilization is less demanding or mixing process in the less situation of small-molecule substance of generation；And vacuum volatilization is the more commonly used devolatilization method, connect the outlet of vacuum system and mixing facilities mainly through discharge duct, form negative-pressure vacuum system, thus the lower-molecular substance produced in mixing process is discharged from system。
In prior art, natural devolatilization cannot remove the lower-molecular substance produced in mixing process completely, and vacuum volatilization system is in the process sloughing lower-molecular substance, due to the formation of its vacuum system, the fused materials in mixing facilities unavoidably occurs under the effect of its negative pressure field, enter in discharge duct by air vent, thus causing discharge duct blocking and loss of material, devolatilization weak effect, affects mixing stability, thus causing the unstability of material product performance。
Summary of the invention
For Problems existing in correlation technique, it is an object of the invention to provide and a kind of the gas that mixing process produces can be drained the binder exhaust apparatus that only can prevent again air vent and discharge duct blocking。
Binder exhaust apparatus for mixing facilities provided by the invention, including: the machine barrel connected with the air vent of mixing facilities；It is arranged on machine barrel sidewall and by internal for the machine barrel exhaustor being connected with vacuum pump；Being arranged on the left screw rod within machine barrel and right screw rod, wherein, left screw rod is contrary with right screw flight bearing of trend, and left screw rod rotates along respective screw thread bearing of trend with right screw rod。
According to the present invention, binder exhaust apparatus also includes: the actuating device being connected with the power intake of left screw rod and right screw rod, and the power set being connected with actuator drives。
The clutch end relative with power intake according to the present invention, left screw rod and right screw rod extends in the air vent of mixing facilities。
According to the present invention, left screw flight and right screw flight engage each other。
According to the present invention, be connected with machine barrel one section of exhaustor is inclined upwardly and extends and be acute angle with the angle of machine barrel sidewall。
According to the present invention, exhaustor vacuum meter and stop valve are sequentially connected in series along the direction from machine barrel to vacuum pump。
According to the present invention, the pitch of left screw rod and right screw rod is equal, and each has at least 5 pitch。
According to the present invention, the distance of the one end that exhaustor is connected with the machine barrel air vent from mixing facilities is at least three pitch。
According to the present invention, the internal diameter of machine barrel is equal with the internal diameter of the air vent of mixing facilities。
The beneficial effects of the present invention is:
The binder exhaust apparatus of the present invention, by being arranged on the rotary motion along respective screw thread bearing of trend of the contrary left screw rod of screw thread bearing of trend within machine barrel and right screw rod by the material that comes up from the air vent of mixing facilities constantly to pressure inside mixing facilities, the gas that volatile components in mixing process produces is discharged from exhaustor simultaneously。Thus not only avoiding aerofluxus insufficient but also avoid exhaustor to block, enlarging markedly exhaust efficiency, and then increasing the stability of production and the stability of properties of product。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the overall structure schematic diagram of the binder exhaust apparatus of the present invention。
Fig. 2 is the sectional view of the binder vent body part of the binder exhaust apparatus shown in Fig. 1。
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
Fig. 1 is the overall structure schematic diagram of the binder exhaust apparatus of the present invention, and Fig. 2 is the sectional view of the binder vent body part of the binder exhaust apparatus shown in Fig. 1。
Referring to Fig. 1-2, binder exhaust apparatus provided by the invention, including: the machine barrel 31 connected with the air vent 41 of mixing facilities 4；Being arranged on machine barrel 31 sidewall and by internal for the machine barrel exhaustor 34 being connected with vacuum pump (not shown), machine barrel 31 perforate above connects discharge duct 34；Being arranged on the left screw rod 32 within machine barrel 31 and right screw rod 33, wherein, left screw rod 32 is contrary with the screw thread bearing of trend of right screw rod 33, and left screw rod 32 rotates along respective screw thread bearing of trend with right screw rod 33。Preferably, left screw rod 32 and the direction of rotation of right screw rod 33 are reverse inside。Would certainly understand from, in other alternative embodiments, left screw rod 32 and the direction of rotation of right screw rod 33 can also be reverse outside。Due to material melting mixing in mixing facilities, carry out devolatilization aerofluxus with certain speed by air vent 41, owing to mixing process existing the suction function of certain pressure and vacuum pump, have partial material can pass through air vent 41 upwards overflow。As long as namely the material come up from the air vent 41 of mixing facilities 4 can be formed towards the thrust within mixing facilities 4 by left screw rod 32 with the rotation of right screw rod 33, thus preventing feed blocking air vent 41 and exhaustor 34。The gas that volatile components in mixing process produces is discharged from exhaustor 34 simultaneously, namely the gas that in mixing process, volatile components produces, is discharged material at screw rod while pressing down in mixing facilities by the gap between machine barrel 31 and left screw rod 32, right screw rod 33。Thus not only avoiding aerofluxus insufficient but also avoid exhaustor to block, enlarging markedly exhaust efficiency, and then increasing the stability of production and the stability of properties of product。
According to the present invention, binder exhaust apparatus also includes: the actuating device 2 being connected with the power intake of left screw rod 32 and right screw rod 33, and drives, with actuating device 2, the power set 1 being connected。It is to say, power set 1 drive actuating device 2, left screw rod 32 crossed by actuating device 2 band and right screw rod 33 rotates。Power set 1 can be that motor, electromotor etc. can produce the equipment of power, and actuating device 2 can the common drive mechanism of gear mechanism, rackwork, link chain mechanism etc.。Machine barrel 31, left screw rod 32, right screw rod 33, actuating device 2, power set 1 and exhaustor 34 constitute a part for binder vent body 3。
With reference to Fig. 1, left screw rod 32 extends in the air vent 41 of mixing facilities with the clutch end relative with power intake of right screw rod 33。The internal diameter of machine barrel 31 is equal with the internal diameter of the air vent 41 of mixing facilities 4。The advantage so arranged is in that, it is simple to left screw rod 32 and right screw rod 33 stretch in air vent 41, effectively to be pushed to mixing facilities is internal by the material emerged, thus preventing blocking。
Screw thread with reference to Fig. 2, the screw thread of left screw rod 32 and right screw rod 33 engages each other。By the impetus that the engagement of two screw rods and spiral shell rib are downward, the material that air vent is come up constantly is pressed inside mixing facilities。
With reference to Fig. 1, be connected with machine barrel 31 one section of exhaustor 34 is inclined upwardly extension and be acute angle with the angle α of machine barrel 31 sidewall。Preferably, angle α is 20 °, and it can also be other number of degrees, to ensure that fraction melt that gas takes out of in exclusion process and chip will not enter exhaustor 34。
With reference to Fig. 1, along being sequentially connected in series vacuum meter 35 and stop valve 36 from machine barrel 31 to the direction of vacuum pump on exhaustor 34。Keeping the opening of stop valve 36, under the effect of the negative pressure field that vacuum pump is set up, gas enters exhaustor 34 by between screw rod 32, the 33 and gap of screw rod and machine barrel 31, and is got rid of by exhaustor 34。In mixing process, it is possible to read the vacuum in discharge duct by vacuum meter 35, regulated the open degree of discharge duct valve by stop valve 36, and then control flow velocity and the capacity of pipeline。In the present embodiment, between exhaustor 34 and machine barrel 31 adopt Welding Structure, adopt between stop valve 36 and exhaustor 34 threaded。Certainly, in addition may be used without well known to a person skilled in the art that other pipeline connecting modes realize。
As in figure 2 it is shown, the pitch of left screw rod 32 and right screw rod 33 is equal, and each there are at least 5 pitch。The distance of the one end that exhaustor 34 is connected with machine barrel 31 air vent 41 from mixing facilities is at least three pitch。It is to say, the lower section in the aperture connected with exhaustor 34 at machine barrel 31, at least to ensure that screw rod has 3 or above pitch, thus ensureing that the material emerged in mixing facilities 4 is through being pressed down against the process advanced fully, reaches the purpose of binder aerofluxus。
More preferably, one layer of O-ring seal (not shown) is set up in connection cooperation place at machine barrel 31 and left screw rod 32, right screw rod 33, thus playing better seal effect, exhaust effect is more preferably。
The binder exhaust apparatus for mixing facilities of the present invention utilizes the engagement of screw rod and progradation that mixing melt is carried out devolatilization aerofluxus, improves the efficiency of aerofluxus。First, fused materials reenters mixing facilities by the progradation of left screw rod 32 and right screw rod 33 spiral shell rib, will not outwards emerge, and secondly, while the downward binder of screw rod, by the negative pressure field that vacuum pump is set up, gets rid of the gas produced in devolatilization processes。
So, mixing melt completes binder process by the progradation of the engagement of screw rod and spiral shell rib in binder vent body 3。The discharge process of devolatilization gas is completed at vacuum pump under the effect of the negative pressure field then set up again。Binder vent body 3 is reaching to discharge the double effects of devolatilization gas fused materials while press-in in mixing facilities。
The present invention is used in the mixing devolatilization processes that plastic blend is modified, is particularly used in the mixing exhaust process etc. of the devolatilization of some volatile component, some filling-modified material。Devolatilization aerofluxus in such as ABS and SAN blending and modifying process, can increase the present invention at the air vent of mixing facilities and process。Adopt the present invention to improve exhaust efficiency, do not have the insufficient phenomenon with blocking discharge duct of aerofluxus。Meanwhile, utilizing the feature of engagement screws forced conveyance, the material scope ratio that this device is suitable for is wide, it is possible to the operation of continuous-stable。
The actively progressive effect of the present invention is in that:
First, in conjunction with other devolatilization exhaust mode nature aerofluxus and vacuum exhausts in plastic milling process, the present invention improves exhaust efficiency, does not have the insufficient phenomenon with blocking discharge duct of aerofluxus。
Meanwhile, utilizing the feature of engagement screws forced conveyance, the material scope ratio that this device is suitable for is wide, it is possible to the operation of continuous-stable。
Additionally, this aerofluxus binder device structure is simple, device fabrication is with low cost, there is the advantage that equipment investment is little and operating cost is low, and change conveniently, the effect of devolatilization aerofluxus can be promoted, reduce the small-molecule substance content in goods, improve stability and seriality。
Further, since the self-cleaning function of screw rod, devolatilization system cleaning is convenient, fast。
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme。
Claims (9)
1. the binder exhaust apparatus for mixing facilities, it is characterised in that including:
The machine barrel connected with the air vent of described mixing facilities；
It is arranged on described machine barrel sidewall and by internal for the described machine barrel exhaustor being connected with vacuum pump；
Being arranged on the left screw rod within described machine barrel and right screw rod, wherein, described left screw rod is contrary with described right screw flight bearing of trend, and described left screw rod rotates along respective screw thread bearing of trend with described right screw rod。
2. binder exhaust apparatus according to claim 1, it is characterised in that also include: the actuating device being connected with the power intake of described left screw rod and described right screw rod, and the power set being connected with described actuator drives。
3. binder exhaust apparatus according to claim 2, it is characterised in that described left screw rod extends in the described air vent of described mixing facilities with the clutch end relative with described power intake of described right screw rod。
4. binder exhaust apparatus according to claim 1, it is characterised in that described left screw flight and described right screw flight engage each other。
5. binder exhaust apparatus according to claim 1, it is characterised in that be connected with described machine barrel one section of described exhaustor is inclined upwardly and extends and be acute angle with the angle of described machine barrel sidewall。
6. binder exhaust apparatus according to claim 1, it is characterised in that along being sequentially connected in series vacuum meter and stop valve from described machine barrel to the direction of described vacuum pump on described exhaustor。
7. binder exhaust apparatus according to claim 1, it is characterised in that the pitch of described left screw rod and described right screw rod is equal, and each has at least 5 pitch。
8. binder exhaust apparatus according to claim 7, it is characterised in that the distance of the one end that described exhaustor is connected with the described machine barrel air vent from described mixing facilities is at least 3 described pitch。
9. binder exhaust apparatus according to claim 1, it is characterised in that the internal diameter of described machine barrel is equal with the internal diameter of the air vent of described mixing facilities。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051457.4A CN105690592A (en) | 2016-01-26 | 2016-01-26 | Pressing and exhausting device for mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051457.4A CN105690592A (en) | 2016-01-26 | 2016-01-26 | Pressing and exhausting device for mixing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105690592A true CN105690592A (en) | 2016-06-22 |
Family
ID=56228619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610051457.4A Pending CN105690592A (en) | 2016-01-26 | 2016-01-26 | Pressing and exhausting device for mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105690592A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501361A (en) * | 2011-10-26 | 2012-06-20 | 大连橡胶塑料机械股份有限公司 | Devolatilization device for extruder |
| CN102990904A (en) * | 2013-01-10 | 2013-03-27 | 游瑞生 | Pressing vacuum exhaust device used for conical double-screw extruder |
| CN104015337A (en) * | 2014-06-03 | 2014-09-03 | 成都金稷丰机械制造有限公司 | Vacuumized-type forced material pressing device and extruding inflating machine |
-
2016
- 2016-01-26 CN CN201610051457.4A patent/CN105690592A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501361A (en) * | 2011-10-26 | 2012-06-20 | 大连橡胶塑料机械股份有限公司 | Devolatilization device for extruder |
| CN102990904A (en) * | 2013-01-10 | 2013-03-27 | 游瑞生 | Pressing vacuum exhaust device used for conical double-screw extruder |
| CN104015337A (en) * | 2014-06-03 | 2014-09-03 | 成都金稷丰机械制造有限公司 | Vacuumized-type forced material pressing device and extruding inflating machine |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160622 |
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| RJ01 | Rejection of invention patent application after publication |