CN205207862U - Pneumatic plunger valve of PTFE - Google Patents
Pneumatic plunger valve of PTFE Download PDFInfo
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- CN205207862U CN205207862U CN201520644974.3U CN201520644974U CN205207862U CN 205207862 U CN205207862 U CN 205207862U CN 201520644974 U CN201520644974 U CN 201520644974U CN 205207862 U CN205207862 U CN 205207862U
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- spool
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Abstract
The utility model relates to a pneumatic plunger valve of PTFE, which comprises the following components: a valve body, case and fluid passage, end cap on the case is under the promotion of valve rod, open or closed fluid passage, the position that corresponds the case in the valve body is provided with a case installation cavity, the end cap includes that a setting corresponds the semi -closed tubbiness diaphragm of fluid passage one end at case installation cavity, sealing connection between diaphragm edge and the case installation cavity edge, the valve rod includes that it penetrates at a distance from intramembranous actuating lever to install cavity bottom inner wall through the case for one, be equipped with the piston at the actuating lever tip, the piston is sealed and sliding connection with case installation cavity inner wall, wherein be provided with drive medium A between the bottom surface on piston and case installation cavity, be provided with drive medium B between the bottom surface under piston and case installation cavity, the valve body all adopts the PTFE material to make with the diaphragm.
Description
Technical field
The utility model relates to a kind of PTFE pneumatic plunger valve, belongs to pneumatic valve field.
Background technique
The valve of our company's use is all from Japan or imported from America before, and price is very high, and procurement cycle is very long, has had a strong impact on the manufacturing schedule of company.Meanwhile, in the chemical valve of import, the material of barrier film is all much be PFA.Because PFA is generally shaped by injection moulding, can not Vehicle Processing.Therefore we devise the barrier film of PTFE material, facilitate production.This programme saves the processing cost of company greatly, shortens the manufacturing cycle of board simultaneously.
Model utility content
The technical problems to be solved in the utility model is: overcome the technical problem that valve member of the prior art is not easily processed, and provides a kind of pneumatic plunger valve of PTEF material.
The utility model solves the technological scheme that its technical problem adopts:
PTFE pneumatic plunger valve, comprise valve body, spool and fluid passage, plug on spool is under the promotion of valve rod, open or closed fluid passages, in described valve body, the position of corresponding spool is provided with a spool and installs cavity, described plug comprises one and is arranged on the semiclosed tubbiness barrier film that spool installs the corresponding one end, fluid passage of cavity, the side wall surface of barrier film has stretchability, diaphragm edge and spool are installed between cavity edge and are tightly connected, described valve rod comprises one and installs cavity bottom inwall through spool and penetrate into driveshaft in barrier film, piston is provided with in driveshaft end, piston and spool are installed cavity inner wall and are sealed and be slidably connected,
Wherein install between cavity upper bottom surface at piston and spool and be provided with driven medium A, install between cavity bottom surface at piston and spool and be provided with driven medium B;
Described valve body and barrier film all adopt PTFE material to make.
As further innovation of the present utility model, in described valve body, corresponding spool is installed cavity bottom surface position and is also provided with an annular barrier film mounting groove, and the annular bottom surface of described diaphragm edge and barrier film mounting groove is tightly connected.
As further innovation of the present utility model, be provided with an annular groove at the annular bottom surface edge of described barrier film mounting groove, be provided with the annular relief be sealed and matched with described groove at the outward edge of described barrier film.
As further innovation of the present utility model, the bottom surface that described spool installs cavity comprises a seal ring, be tightly connected between the side wall surface of described seal ring and the side wall surface of barrier film mounting groove, be tightly connected between the middle part inwall of seal ring and the outer wall of driveshaft.
As further innovation of the present utility model, described valve body comprises the cylinder body installing spool and the bottom body arranging fluid passage, between bottom body and cylinder body, wherein spool installs cavity is a HALF OPENING shape cavity being arranged on cylinder body, described barrier film mounting groove comprises an annular opening be arranged on bottom body, spool installs the edge of cavity by being pressed on seal ring, and barrier film is pressed on the bottom surface of barrier film mounting groove by seal ring.
As further innovation of the present utility model, the wall of described barrier film is bellows or organ tubular structure, and the closed end of barrier film is provided with the sprue that a thickness is greater than barrier film side wall surface thickness.
As further innovation of the present utility model, described PTFE pneumatic plunger valve comprises normal opening structure, described normal opening structure comprises the suction port being arranged on spool installation cavity upper bottom surface and the relief opening being arranged on spool installation cavity bottom surface, installs between cavity bottom surface be also provided with diastole spring at piston and spool; Driven medium A is air pressure, and driven medium B is air pressure and diastole spring.
As further innovation of the present utility model, described PTFE pneumatic plunger valve also comprises normally closed structure, described normally closed structure comprises the suction port being arranged on spool installation cavity bottom surface and the relief opening being arranged on spool installation cavity upper bottom surface, installs between cavity upper bottom surface be also provided with diastole spring at piston and spool; Driven medium A is air pressure and diastole spring, and driven medium B is air pressure.
As further innovation of the present utility model, the upper bottom surface of described spool installation cavity is provided with a cylindrical groove A, and the position that piston is corresponding is with it provided with cylindrical groove B, and described diastole both ends of the spring is embedded in cylindrical groove A and cylindrical groove B.
As further innovation of the present utility model, fluid passage comprises a cylindricality coaxial with valve core axis and is communicated with cavity, in the upper bottom portion of described connection cavity, the sidewall of valve element position is provided with water intake, the sidewall of the lower bottom part valve element position dorsad of described connection cavity is provided with water outlet.
The beneficial effects of the utility model are:
1, when pressurized gas enters from suction port, pressurized gas physical efficiency is fast by valve closing.
2, when after cancellation air inlet, piston rod can rebound by the precompression of stage clip fast, thus makes valve open.
3, the material of PTFE more acid resistant alkali, the temperature that also ability is higher simultaneously.All be made by PTFE with the part of liquid comes into contact in valve, so the using scope of this valve is more extensive.
4, barrier film adopts spring-like, is more conducive to sealing.Stroke is longer simultaneously.
5, adjusting screw and nut are housed on valve body, the flow of the effective control valve of energy, nut can be that stability of flow is a value.
6, be provided with a relief opening, the gas in cavity can be discharged fast, prevent back pressure, affect valve closing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the schematic diagram of the normal opening structure of the utility model;
Fig. 2 is the schematic diagram of the normally closed structure of the utility model.
In figure: 1, bottom body; 2, barrier film; 3, seal ring; 4, valve rod 4; 5, cylinder body; 6, O type circle; 7, diastole spring; 8, fitting seat.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
As Fig. 2, the present embodiment is a kind of pneumatic plunger valve of normally closed structure, it mainly comprises valve body, spool, valve body is made up of the bottom body 1 of PTFE material and cylinder body 5, fluid passage is provided with in described bottom body 1, fluid passage comprises a cylindricality coaxial with valve core axis and is communicated with cavity, in the upper bottom portion of described connection cavity, the sidewall of valve element position is provided with water intake, and the sidewall of the lower bottom part valve element position dorsad of described connection cavity is provided with water outlet;
One is provided with for installing the semiclosed cavity of spool in described cylinder body 5, the opening of enclosed cavity is provided with an annular groove A, the one end open of described connection cavity, the opening end of described connection cavity is provided with annular groove B, described spool comprises the barrier film 2 of a PTEF material, described barrier film 2 comprises the pars contractilis of a semiclosed tubular, an annular fixing part and be arranged on the sprue of pars contractilis bottom, at the outer rim place of the fixing part of annular, pars contractilis side is provided with an annular relief, the bottom surface of annular groove B is provided with an annular groove corresponding with annular relief, described annular relief is embedded in annular groove the sealing realized installing spool inner cavity, realize the isolation between spool and fluid passage simultaneously, seal ring 3 is also provided with between described annular groove A and annular groove B, the outer rim of described seal ring 3 is tightly connected respectively between annular groove A and the side wall surface of annular groove B,
Described spool also comprises a valve rod 4, valve rod 4 forms by driveshaft with the vertically disposed piston of driveshaft, be tightly connected by O type circle 6 between semiclosed cavity inner wall in piston and cylinder body 5, piston can slide along aforesaid inwall simultaneously, driveshaft is through the middle part of seal ring 3, be inserted in barrier film 2, fix with the sprue bottom barrier film 2, the pars contractilis of barrier film 2 is lathed organ tubulose by lathe, to ensure that the barrier film 2 be made up of the PTEF material that amount of deformation is lower has good telescopicing performance;
Bottom the closed end of cylinder body 5, be provided with a cylindrical groove A simultaneously, the position that piston is corresponding is with it provided with cylindrical groove B, diastole spring 7 is provided with between cylindrical groove A and cylindrical groove B, in cylinder body 5, the bottom of semiclosed cavity is provided with suction port, and the bottom of cylindrical groove A is provided with air outlet.
Withstand piston by the precompression of spring, make it move to lowest part downwards, reach sealing effect by extruding PTFE barrier film 2 with the cavity that is communicated with of valve body.Valve body and barrier film 2 are all made by the material of PTFE, can acid-fast alkali-proof, simultaneously, barrier film 2, in the annular groove part with valve body cooperation place, is located when can conveniently install, can be prevented again chemical liquids when by valve body, chemical liquids infiltrates, other parts of corrosion valve;
When valve needs to open, by suction port, in cylinder body 5, pass into pressurized gas, when the pressure of pressurized gas is greater than the pressure of spring, valve can be opened;
Seal ring 3 effectively can cut off valve body and cylinder body 5, makes both it independent, not gas blowby.
Embodiment 2
As Fig. 1, the present embodiment is a kind of pneumatic plunger valve of normal opening structure, it mainly comprises valve body, spool, valve body is made up of the bottom body 1 of PTFE material and cylinder body 5, fluid passage is provided with in described bottom body 1, fluid passage comprises a cylindricality coaxial with valve core axis and is communicated with cavity, in the upper bottom portion of described connection cavity, the sidewall of valve element position is provided with water intake, and the sidewall of the lower bottom part valve element position dorsad of described connection cavity is provided with water outlet;
One is provided with for installing the semiclosed cavity of spool in described cylinder body 5, the one end open of described connection cavity, the opening section of described connection cavity amasss and is greater than the sectional area that cylinder body 5 inner spool installs cavity, the opening end of described connection cavity is provided with annular groove B, described spool comprises the barrier film 2 of a PTEF material, described barrier film 2 comprises the pars contractilis of a semiclosed tubular, an annular fixing part and be arranged on the sprue of pars contractilis bottom, at the outer rim place of the fixing part of annular, pars contractilis side is provided with an annular relief, the bottom surface of annular groove B is provided with an annular groove corresponding with annular relief, described annular relief is embedded in annular groove the sealing realized installing spool inner cavity, realize the isolation between spool and fluid passage simultaneously, seal ring 3 is also provided with in described annular groove B, be tightly connected between the outer rim of described seal ring 3 and the side wall surface of annular groove B, seal ring 3 is pressed on the fixing part of barrier film 2 by the spool installation cavity outer wall in cylinder body 5 simultaneously,
Described spool also comprises a valve rod 4, valve rod 4 forms by driveshaft with the vertically disposed piston of driveshaft, be tightly connected between semiclosed cavity inner wall in piston and cylinder body 5, piston can slide along aforesaid inwall simultaneously, piston is also provided with O type circle 6, driveshaft is through the middle part of seal ring 3, be inserted in barrier film 2, fix with the sprue bottom barrier film 2, the pars contractilis of barrier film 2 is lathed organ tubulose by lathe, to ensure that the barrier film 2 be made up of the PTEF material that amount of deformation is lower has good telescopicing performance;
Bottom the closed end of cylinder body 5, be provided with a cylindrical groove A, between described seal ring 3 and piston, be provided with diastole spring 7, in cylinder body 5, the bottom of semiclosed cavity is provided with air outlet, and the bottom of cylindrical groove A is provided with suction port simultaneously.
The principle identical with normally close valve, changes the mounting point of spring, compresses PTFE barrier film 2, make chemical liquids by valve body by the precompression of spring;
When valve needs to close, in cylinder body 5, pass into pressurized gas by suction port;
Force spring contraction to the shortest, make piston move to lowest part downwards, piston runs, and drives the stretching, extension of barrier film 2, compresses PTFE valve body, thus realizes the effect of throttle down.
Simultaneously be fixed with a fitting seat 8 in the bottom of valve body by screw, by fitting seat 8 by this valve installation on relevant device.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Claims (10)
1.PTFE pneumatic plunger valve, comprise valve body, spool and fluid passage, plug on spool is under the promotion of valve rod, open or closed fluid passages, it is characterized in that: in described valve body, the position of corresponding spool is provided with a spool and installs cavity, described plug comprises one and is arranged on the semiclosed tubbiness barrier film that spool installs the corresponding one end, fluid passage of cavity, diaphragm edge and spool are installed between cavity edge and are tightly connected, described valve rod comprises one and installs cavity bottom inwall through spool and penetrate into driveshaft in barrier film, piston is provided with in driveshaft end, piston and spool are installed cavity inner wall and are sealed and be slidably connected,
Wherein install between cavity upper bottom surface at piston and spool and be provided with driven medium A, install between cavity bottom surface at piston and spool and be provided with driven medium B;
Described valve body and barrier film all adopt PTFE material to make.
2. PTFE pneumatic plunger valve as claimed in claim 1, is characterized in that: in described valve body, corresponding spool is installed cavity bottom surface position and is also provided with an annular barrier film mounting groove, and the annular bottom surface of described diaphragm edge and barrier film mounting groove is tightly connected.
3. PTFE pneumatic plunger valve as claimed in claim 2, is characterized in that: be provided with an annular groove at the annular bottom surface edge of described barrier film mounting groove, be provided with the annular relief be sealed and matched with described groove at the outward edge of described barrier film.
4. PTFE pneumatic plunger valve as claimed in claim 2, it is characterized in that: the bottom surface that described spool installs cavity comprises a seal ring, be tightly connected between the side wall surface of described seal ring and the side wall surface of barrier film mounting groove, be tightly connected between the middle part inwall of seal ring and the outer wall of driveshaft.
5. PTFE pneumatic plunger valve as claimed in claim 4, it is characterized in that: described valve body comprises the cylinder body installing spool and the bottom body arranging fluid passage, between bottom body and cylinder body, wherein spool installs cavity is a HALF OPENING shape cavity being arranged on cylinder body, described barrier film mounting groove comprises an annular opening be arranged on bottom body 1, spool installs the edge of cavity by being pressed on seal ring, and barrier film is pressed on the bottom surface of barrier film mounting groove by seal ring.
6. PTFE pneumatic plunger valve as claimed in claim 1, is characterized in that: the wall of described barrier film is bellows or organ tubular structure, and the closed end of barrier film is provided with the sprue that a thickness is greater than barrier film side wall surface thickness.
7. PTFE pneumatic plunger valve as claimed in claim 1, it is characterized in that: described PTFE pneumatic plunger valve comprises normal opening structure, described normal opening structure comprises the suction port being arranged on spool installation cavity upper bottom surface and the relief opening being arranged on spool installation cavity bottom surface, install between cavity bottom surface at piston and spool and be also provided with diastole spring, driven medium A is air pressure, and driven medium B is air pressure and diastole spring.
8. PTFE pneumatic plunger valve as claimed in claim 1, it is characterized in that: described PTFE pneumatic plunger valve also comprises normally closed structure, described normally closed structure comprises the suction port being arranged on spool installation cavity bottom surface and the relief opening being arranged on spool installation cavity upper bottom surface, install between cavity upper bottom surface at piston and spool and be also provided with diastole spring, driven medium A is air pressure and diastole spring, and driven medium B is air pressure.
9. PTFE pneumatic plunger valve as claimed in claim 7, it is characterized in that: on the upper bottom surface of described spool installation cavity, be provided with a cylindrical groove A, the position that piston is corresponding is with it provided with cylindrical groove B, and described diastole both ends of the spring is embedded in cylindrical groove A and cylindrical groove B.
10. PTFE pneumatic plunger valve as claimed in claim 1, it is characterized in that: fluid passage comprises a cylindricality coaxial with valve core axis and is communicated with cavity, in the upper bottom portion of described connection cavity, the sidewall of valve element position is provided with water intake, the sidewall of the lower bottom part valve element position dorsad of described connection cavity is provided with water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644974.3U CN205207862U (en) | 2015-08-25 | 2015-08-25 | Pneumatic plunger valve of PTFE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644974.3U CN205207862U (en) | 2015-08-25 | 2015-08-25 | Pneumatic plunger valve of PTFE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207862U true CN205207862U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520644974.3U Active CN205207862U (en) | 2015-08-25 | 2015-08-25 | Pneumatic plunger valve of PTFE |
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| CN (1) | CN205207862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195366A (en) * | 2016-07-20 | 2016-12-07 | 上海宇航系统工程研究所 | A kind of pneumatic fill valve |
| WO2017215293A1 (en) * | 2016-06-13 | 2017-12-21 | 江苏新美星包装机械股份有限公司 | High-pressure valve |
-
2015
- 2015-08-25 CN CN201520644974.3U patent/CN205207862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017215293A1 (en) * | 2016-06-13 | 2017-12-21 | 江苏新美星包装机械股份有限公司 | High-pressure valve |
| CN106195366A (en) * | 2016-07-20 | 2016-12-07 | 上海宇航系统工程研究所 | A kind of pneumatic fill valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |