CN1077785A - Pressure-limit valve - Google Patents
Pressure-limit valve Download PDFInfo
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- CN1077785A CN1077785A CN 92113252 CN92113252A CN1077785A CN 1077785 A CN1077785 A CN 1077785A CN 92113252 CN92113252 CN 92113252 CN 92113252 A CN92113252 A CN 92113252A CN 1077785 A CN1077785 A CN 1077785A
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- valve
- pressure
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- casing
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Abstract
A kind of pressure-limit valve, be particularly useful in the underground mine exploitation on the mine laneway pillar, pressure-limit valve has valve casing (1) and valve joint (6) that is contained in pressure sleeve (7) position of an arrangement valve spring (2), it is fixed on the valve casing and has an axial bore, and the power that the guiding valve (9) that is loaded by pressure medium can overcome valve spring moves in this hole.Valve spring is supported on the valve casing plunger (3) that can axially screw in the valve casing at a relative end place.The present invention advises constituting valve casing (1) with standard pipe fitting section, and the one end is provided with internal thread, is used to screw in plunger (3), and the other end is provided with inside groove (5), is used to settle the quick mounting (16) of standing valve joint.
Description
The present invention relates to a kind of pressure-limit valve, be particularly useful on the mine laneway pillar in the underground mine exploitation.This pressure-limit valve comprises valve casing and valve joint that is contained in the pressure connection tube part of an arrangement valve spring, it is fixed on the valve casing and has an axial valve opening, in this valve opening, have a guiding valve that loads by pressure medium can overcome the power of valve spring and move, valve spring in relative end portion supports on the housing plunger that can axially screw in the valve casing.
This pressure-limit valve is for example open by DE-PS3314837.Valve casing is made of complicated turning parts in this known pressure-limit valve, formed by solid material turning, so cost of production is very high.Be provided with supporting shoulder in the valve casing, valve joint is supported on these convex shoulders vertically.It is necessary that valve joint is supported on the convex shoulder that shape conforms to so vertically, so that power big, that be applied on the valve joint by valve spring fully acts on the valve casing, and valve joint can not extruded from valve casing.
By prior art also the valves known joint by screw on valve casing, it equally also can accept very big axial force.But this situation also makes the used valve casing structure more complicated of prior art, thereby cost of production is very high.
This pressure-limit valve must move when pressure is very high reliably, thereby must satisfy very high quality standard, so its cost of production (even producing by batch) is quite high.
Therefore task of the present invention is, the high pressure valve (safety valve) that begins described type is carried out designs simplification, reduces its desired operating cost, does not influence its job security simultaneously.
For solving this task, the present invention is from beginning the following measure of described pressure-limit valve suggestion, and promptly valve casing is made of a prover section, and its end is provided with the internal thread that is used to screw on the housing plunger, its the other end is provided with the inside groove that is used to settle fixed block, so that shape standing valve joint suitably.
Pressure-limit valve of the present invention has avoided adopting the turning part that makes the cost raising as valve casing in especially favourable mode, but adopts a standard pipe fitting section as valve casing, and this pipeline section can easily obtain from the standard pipe fitting and only need carry out the reprocessing of minute quantity.This reprocessing mainly is included on the end of pipe and processes internal thread, processes inside groove on the relative the other end of pipe, is used to settle the quick mounting of standing valve joint.Investigation shows, adopts the standard pipe fitting section of the present invention's suggestion can reduce more than 30% as its processing cost when pressure-limit valve is produced by batch of valve casing.
In a preferred embodiment of the invention, valve joint has a cylindricality fixed block that can push in the valve casing, an annular water jacket is arranged on its outer circumferential face, and the inside groove of this water jacket and valve casing matches, and two grooves that match can be arranged on inner blocking element by one and be fixed together.Form a kind of suitable connection of shape of the quick assembling between valve casing and valve joint thus, in case of necessity, this connection can also be knock-down structure.
Favourable form of implementation regulation of the present invention is provided with a hole with the tangent layout of valve casing inner peripheral surface in the valve casing at inside groove height place, be used to import a groove silk as blocking element.This groove silk connects and can produce fast at an easy rate.The solid shape that is produced by the groove silk that inserts can transmit very big axial force at both direction.It is non-removable that but this groove silk that has only an opening that is used for the input slot silk connects.
Also can dismantle if require this groove silk to connect, can be provided with and second tangent hole of valve casing inner peripheral surface in the valve casing wall on inside wall height, as the outlet of groove silk.Can the groove silk be pulled out from groove with proper tools by this hole.
Another measure that is different from above-mentioned groove silk connection is the spring shackle as blocking element of packing in two grooves that match of valve casing and valve joint, the edge of water jacket pushes the sidewall that direction is positioned at the front a conical surface, and this inclined-plane is opening spring shackle when shifting out direction movement of valve joint.The structure of this Quick Connect Kit between valve joint and valve casing can realize that the utmost point assembles rapidly.Because only valve joint need be pushed in the valve casing, buckle in the valve casing inside groove up to spring shackle, and valve joint can not be pulled out from valve casing more in opposite direction after this, because spring shackle is opened by the tapered sidewalls of water jacket, consequent solid shape has stoped it to pull out.But, can after splitting out valve spring, valve joint inwardly be extruded valve casing in order to dismantle.On this movement direction, spring shackle is supported on the steep water jacket sidewall relative with tapered sidewalls, thereby can push the interior clear span degree up to valve casing.
The housing plunger preferably is provided with one and is used to connect the interior hexagonal of outer-hexagonal wrench also simultaneously as valve spring is carried out pre-tensioned controlling device.Utilize this dual functions of housing plunger that structure is further simplified.In the housing plunger, be provided with one relatively the valve disc regulated of housing plunger be very general in prior art, pressure-limit valve of the present invention then can not wanted this valve disc.
In addition, an end and the pressure sleeve away from valve casing of valve link fuse.Adopt this measure that pressure-limit valve is further simplified, because pressure sleeve and valve joint body all are to be made of single turning part, its profile can once clamp turning and form in the automatic turning machine.
A structure regulation that conforms with purpose of the present invention, valve casing away from an end of pressure sleeve by a protective cap capping, be provided with some pressure medium outflow openings, the passage that the protective cap inboard is provided with axial rib and discharges injected pressure medium below the protective cap.Protective cap prevents the contingent manipulation of the pre-tensioning of valve spring being carried out by the inoperative personnel with the end complete closed away from pressure sleeve of valve casing, and prevents that spray-hole is not influenced by dirt.
Protective cap preferably has the identification colors of determining that shows each pressure level.So just needn't resembling usually on pressure-limit valve brushing tag marking or the feature strip of paper used for sealing is set.
Another measure that reduces cost is that valve casing is made of zinc-plated structural steel, and valve joint is made of the non-corrosive material, preferably uses by stainless steel.Like this, expensive material only adopts on the pressure-limit valve functional part that contacts with pressured fluid, and those parts that only bear mechanical load then adopt the more cheap zinc-plated etch-proof material that passes through.
At last, to establish a guiding element be favourable to an end of the close valve spring of housing plunger.The extension over half of this guiding element its axial length in valve spring provides a support that is come by inside to valve spring, valve spring can not curved inwardly, and this crooked meeting changes spring performance.
The contrast accompanying drawing elaborates to one embodiment of the present of invention below.In the accompanying drawing,
Fig. 1 is a vertical profile schematic representation of pressure-limit valve of the present invention,
Fig. 2 is the valve casing horizontal cross on the inside groove height that is having the connection of groove silk in first kind of form of implementation,
Fig. 3 is the valve casing horizontal cross on the inside groove height that is having the connection of groove silk in second kind of form of implementation,
Fig. 4 has the phantom of a spring shackle as the valve joint of quick link,
Fig. 5 is a vertical sectional view of protective cap,
Fig. 6 is the vertical profile schematic representation of pressure-limit valve of the present invention in second form of implementation.
Pressure-limit valve shown in the accompanying drawing has a tubular valve shell 1 of being made by standard pipe fitting section.There is an internal thread valve casing 1 upper end, and housing plunger 2 can axially screw in this internal thread.Valve casing plunger 2 is as the bearing that is contained in the valve spring 3 in the valve casing 1.In order to regulate the pretightening force of valve spring 3, hexagonal 4 in being provided with in valve casing plunger 2 can be inserted a unshowned outer-hexagonal wrench and make it to rotate and axial adjustment valve casing plunger 2 in the interior hexagonal 4.Facing to valve casing 1 on the end of valve casing plunger 2 an annular inside groove 5 that is used for fixing valve joint 6 is being arranged.Valve joint 6 closes the end facing to valve casing plunger 2 of valve casing 1, and the lower end of valve joint and the pressure sleeve of pressure-limit valve (or joint) 7 are linked to be integral body, and 7 of pressure sleeves can be connected by the pressure chamber of known mode with the mine laneway pillar.
In the end of the close pressure disk 10 of valve opening 8, be provided with a groove that surrounds valve opening 8, wherein be equipped with by the sealing material O shape ring 13 made of rubber for example, this ring 13 slides on the cylindricality of guiding valve 9 outside, and forms completely between the valve joint 6 and the guiding valve 9 that can move therein and seal.
For valve joint 6 is fixed on the valve casing 1, valve joint 6 is provided with a cylindricality fixed connecting piece 14, and it can be from following insertion valve casing 1, and its outer circumferential face is provided with water jacket 15, and this water jacket 15 is the inside groove 5 facing to valve casing 1 on rigging position the time.Can insert the latch 16 that a shape conforms to by in two grooves 5 and the chamber that 15 constitute, it is securely fixed on the valve casing 1 valve joint 6.
In embodiment illustrated in fig. 2, the latch that shape is suitable is made of groove silk 16a, and it is sent among inside groove 5 and Fig. 2 in the unshowned pipe joint water jacket 15 by the hole in the valve casing wall 17.Clearly visible by Fig. 2, hole 17 is tangent with the inwall of valve casing 1 approximately, thereby groove silk 16a can tangentially send into with being out of question.The groove silk 16a that sends into like this can not take out from groove 5 and 15 again.Thereby Gu Ding valve joint 6 can not disassemble from valve casing 1 more like this.
A kind of dismountable connection has been shown among Fig. 3.Be provided with the tangent hole 18 of inwall of another and valve casing in the wall of this external valve casing 1, groove silk 16a passes this hole and can pull out from groove 5 and 15 again by means of proper tools where necessary.
In embodiment illustrated in fig. 4, latch is spring shackle 16b, and it places the water jacket 15 of valve joint 6.As seen from Figure 4, under this fixation case, water jacket 15 is to construct like this, makes the power that occurs under its proper functioning in pressure-limit valve that valve joint 6 is skidded off from valve casing 1.Be positioned on the immigration direction of water jacket 15 on the sidewall 15a of front for this reason and be provided with a tapered slope, this inclined-plane will make spring shackle 16b open along shifting out on the direction when mobile at valve joint.Groove 15 to be positioned at the cut sth. askew sidewall 15b on sidewall 15a opposite of taper then very steep, thereby spring shackle 16b can not open when valve joint further moves into valve casing 1, valve joint 6 can push through valve casing 1 on this direction like this.Can dismantle pressure-limit valve at an easy rate thus.
Side away from pressure sleeve 7 of valve casing 1 is covered by protective cap 19.Valve casing 1 is provided with the outlet 20 that is used for injected pressure medium below protective cap 19, and the inboard of protective cap 19 is provided with the rib and the passage 21 of axial distribution, is used to discharge injected pressure medium.Hexagonal 4 in protective cap 19 is sealed on the one hand makes the inoperative personnel can not regulate the pretightening force of valve spring 2, seals outlet 20 on the other hand, makes dust and dirt not to enter in the valve casing 1 from exporting 20.
Protective cap preferably has the identification colors of definite pressure level that shows relevant pressure-limit valve.
In pressure-limit valve embodiment shown in Figure 6 (it is to a great extent to embodiment illustrated in fig. 1 similar), the valve casing plunger 3 that is screwed in the shell valve 1 is provided with a guide head 3a, and it extends on valve spring 2 axial length over half and can give valve spring additional support internally.
Claims (13)
1, pressure-limit valve, be particularly useful in the mine laneway pillar in the underground mine exploitation, this pressure-limit valve has a peace to receive valve casing and a valve joint that is located in the pressure connection tube position of valve spring, valve joint is fixed on the valve casing and an axial valve opening is arranged, guiding valve that is loaded by pressure medium can overcome the power of valve spring and move in this valve opening, valve spring is supported on the valve casing plunger that can axially screw in the valve casing at a relative end place, it is characterized in that, valve casing (1) is made of a standard pipe fitting section, one end of this pipeline section is provided with the internal thread that is used to screw in valve casing plunger (3), the relative the other end is provided with and is used to settle fixed block (16,16a is 16b) so that the shape inside groove (5) of standing valve joint (6) suitably.
2, according to the pressure-limit valve of claim 1, it is characterized in that, valve joint (6) has a cylindricality fixed block (14) that can move in the valve casing (1), one annular water jacket (15) is arranged on its outer circumferential face, this water jacket (15) matches with the inside groove (5) of valve casing (1), it is fixed with each other that two grooves that match (5,15) can be arranged on inner latch (16) the shape ground that conforms to by one.
According to the pressure-limit valve of claim 1 and 2, it is characterized in that 3, the wall of valve casing (1) is provided with a hole (7) tangent with the inner peripheral surface of valve casing (1) on the height of inside groove (5), be used to import a groove silk (16a) as latch.
According to the pressure-limit valve of claim 3, it is characterized in that 4, the wall of valve casing (1) is provided with a hole (18) tangent with valve casing (1) inner peripheral surface on the height of inside groove (5), be used to take out groove silk (16a).
5, according to the pressure-limit valve of claim 1 and 2, it is characterized in that, two grooves that match (5 of valve casing (1) and valve joint (6), 15) insert a spring shackle (16b) in as latch, the sidewall (15a) that the edge immigration direction of water jacket (15) is positioned at the front has a tapered slope, and it makes spring shackle (16b) open when direction moves along shifting out at valve joint (6).
6, according to the pressure-limit valve one of among the claim 1-5, it is characterized in that valve casing plunger (3) has an interior hexagonal that is used to connect the outer-hexagonal wrench, simultaneously also as the controlling device of valve spring pretightening force.
7, according to the pressure-limit valve one of among the claim 1-6, it is characterized in that, valve joint (6) be linked to be integral body away from a side of valve casing (1) and the pressure sleeve (7) of high pressure valve.
8, according to the pressure-limit valve one of among the claim 1-7; it is characterized in that; valve casing (1) away from a side of pressure sleeve (7) by a protective cap (19) capping; and below protective cap (19); valve casing (1) has some outlets that are used for injected pressure medium (20), and protective cap (19) inboard is provided with axial rib and the passage (21) that is used to discharge injected pressure medium.
9, according to the pressure-limit valve one of among the claim 1-8, it is characterized in that protective cap (19) has definite identification colors that shows pressure level.
10, according to the pressure-limit valve one of among the claim 1-9, it is characterized in that valve casing (1) is made of zinc-plated structural steel.
According to the pressure-limit valve of claim 10, it is characterized in that 11, valve joint (6) is made of the non-corrosive material.
According to the pressure-limit valve of claim 11, it is characterized in that 12, valve joint (5) is made of high-grade alloy steel.
According to the pressure-limit valve of claim 1, it is characterized in that 13, valve casing plunger (3) has a guiding element (3a) in its side near valve spring (2), extends on its axial length over half in valve spring (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4213088 | 1992-04-21 | ||
| DEP4213088.3 | 1992-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1077785A true CN1077785A (en) | 1993-10-27 |
Family
ID=6457155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113252 Pending CN1077785A (en) | 1992-04-21 | 1992-11-14 | Pressure-limit valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1077785A (en) |
| ZA (1) | ZA927976B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375617A (en) * | 2012-04-16 | 2013-10-30 | 上海立新液压有限公司 | Cartridge pressure reduction valve |
| CN106838391A (en) * | 2017-03-29 | 2017-06-13 | 中石化江汉石油工程有限公司 | Cable perforation automatic safe relief valve |
| CN107532738A (en) * | 2015-03-25 | 2018-01-02 | 罗伯特·博世有限公司 | Pressure limiting valve |
-
1992
- 1992-10-15 ZA ZA927976A patent/ZA927976B/en unknown
- 1992-11-14 CN CN 92113252 patent/CN1077785A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375617A (en) * | 2012-04-16 | 2013-10-30 | 上海立新液压有限公司 | Cartridge pressure reduction valve |
| CN107532738A (en) * | 2015-03-25 | 2018-01-02 | 罗伯特·博世有限公司 | Pressure limiting valve |
| CN106838391A (en) * | 2017-03-29 | 2017-06-13 | 中石化江汉石油工程有限公司 | Cable perforation automatic safe relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA927976B (en) | 1993-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |