CN105276224A - Pinch valve of high-sealing structure for railway sanitary valve - Google Patents
Pinch valve of high-sealing structure for railway sanitary valve Download PDFInfo
- Publication number
- CN105276224A CN105276224A CN201510673476.6A CN201510673476A CN105276224A CN 105276224 A CN105276224 A CN 105276224A CN 201510673476 A CN201510673476 A CN 201510673476A CN 105276224 A CN105276224 A CN 105276224A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- rubber sleeve
- filler rubber
- sealing structure
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
- F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
- F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0236—Diaphragm cut-off apparatus
Abstract
The invention relates to the technical field of valves, in particular to a pinch valve of a high-sealing structure for a railway sanitary valve. The pinch valve comprises an inner threaded seat, an outer threaded seat, a valve body, two supporting rings and a canvas filler rubber sleeve. The canvas filler rubber sleeve is sleeved with the valve body. The two supporting rings are installed at the two ends of the canvas filler rubber sleeve respectively, and the two ends of the canvas filler rubber sleeve are connected with the two ends of the valve body in a sealed manner through pressing of the supporting rings. The inner threaded seat and the outer threaded seat are installed at the two ends of the valve body respectively. An air chamber is arranged between the canvas filler rubber sleeve and the valve body, and an air opening communicated with the air chamber is formed in the valve body. According to the pinch valve of the high-sealing structure for the railway sanitary valve, the pinch valve can be used 400,000 times for five years, the service life of the pinch valve is well prolonged, zero leakage is achieved, and the pinch valve can be used for directly replacing similar imported goods.
Description
Technical field
The present invention relates to valve technology field, particularly relate to a kind of pinch valve of railway health valve high sealing structure.
Background technique
Existing for railway health department, especially the blowdown valve on high ferro and motor-car is mainly pinch valve structure, but, the sealing configuration of existing pinch valve is generally adopt between valve end and nip ring, be provided with O type circle, if publication number is CN203926896U, name is called the patent of invention of pneumatic clamps pipe valve, between simple dependence nip ring and valve end, the mutual extruding of O type circle is realized to the sealing of valve.The pinch valve sealing of this sealing configuration is poor, easily leakage problem occurs, thus has influence on high ferro or motor-car can not normally use, and causes very large impact to the railway system.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the problem of pinch valve sealing difference in prior art, the invention provides a kind of pinch valve of railway health valve high sealing structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pinch valve of railway health valve high sealing structure, comprise two internal and external threads seats, valve body, two support rings and canvas filler rubber sleeve, described valve body is sleeved on outside canvas filler rubber sleeve, two support rings are arranged on the two ends of canvas filler rubber sleeve respectively, and canvas filler rubber sleeve two ends are tightly connected respectively by the press-in of support ring and the two ends of valve body, two internal and external threads seats are fixedly mounted on the two ends of valve body respectively, air chamber is had between described canvas filler rubber sleeve and valve body, valve body offers the gas port be connected with air chamber, after the gas port of described pinch valve is injected into pressurized air, described canvas filler rubber sleeve is closed its inner passage after compressive strain, the gas port of described pinch valve not injecting compressed air time described canvas filler rubber sleeve inner channels open.The present invention is by support ring as Sealing, and multiple sealing configurations that support ring is arranged, make the two ends of canvas filler rubber sleeve and the two ends good seal of valve body, achieve zero leakage, and extend the working life of pinch valve.
In order to realize the technique effect of zero leakage of the present invention, described valve body is the tubulose of two ends symmetry, the outside at valve body two ends has outside thread, the inside at valve body two ends is provided with sealing surface and sealed groove, sealing surface increases progressively to the valve block internal diameter of valve body end face thus form V-type opening in the two ends of valve body, and sealed groove is arranged on the inner ring of V-type opening.
Further, in order to ensure the technique effect of zero leakage, the inner ring of described V-type opening is provided with two circle sealed grooves.
In order to coordinate novel sealing structure of the present invention, described canvas filler rubber sleeve is the tubulose of inner hollow, the length of canvas filler rubber sleeve slightly larger than or equal the length of valve body.
In order to coordinate the V-type opening at valve body two ends, guarantee sealing effect, described support ring is T-shaped tubulose, support ring is provided with V-type face near the outer ring of the one end at valve body center, the external diameter in V-type face is increased progressively near the one end at valve body center by support ring, and support ring is provided with sealing configuration away from the end face of the one end at valve body center.
In order to ensure the sealing effect of pinch valve, described sealing configuration is that ring is located at support ring away from the multi-turn projection on the end face of the one end at valve body center, serrated slot is formed between adjacent protrusion, support ring has flange collar away from the outer ring of the one end at valve body center, and the roughness of the lower surface of described flange collar is at least 1.6.
In order to ensure negotiability, the internal diameter of described support ring is consistent with the internal diameter of rubber bush, and the external diameter of the flange collar of support ring is greater than the internal diameter of rubber bush.
In order to meet the characteristic requirements of the low and impact resistance of water absorption rate, described support ring adopts polyoxymethylene material.
For the ease of compressing support ring, described internal and external threads seat is hollow cylindrical body, has internal thread in the two ends of internal and external threads seat, and the exterior circumferential of internal and external threads seat is provided with platform.Platform quantity is 4.
The invention has the beneficial effects as follows, the pinch valve of railway health valve high sealing structure of the present invention, prove through overtesting, the working life of the pinch valve of this kind of sealing configuration can reach 400,000 times and 5 years, well extend the working life of pinch valve, and achieve zero leakage, directly can substitute the like product of import.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the external structure schematic diagram of the pinch valve of railway health valve high sealing structure of the present invention.
Fig. 2 is the pinch valve circulation status sectional view (in figure arrow represent gas flow) of railway health valve of the present invention by high sealing structure.
Fig. 3 is the pinch valve cut-off state sectional view (in figure arrow represent gas flow) of railway health valve of the present invention by high sealing structure.
Fig. 4 is the structural representation of the valve body of the pinch valve of railway health valve high sealing structure of the present invention.
Fig. 5 is the structural representation of the support ring of the pinch valve of railway health valve high sealing structure of the present invention.
Fig. 6 is the A place enlarged view of Fig. 5.
In figure: 1, internal and external threads seat, 2, support ring, 21, V-type face, 22, serrated slot, 23, flange collar, 3, canvas filler rubber sleeve, 4, valve body, 41, gas port, 42, sealing surface, 43, sealed groove, 5, air chamber.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in figures 1 to 6, be optimum embodiment of the present invention, a kind of pinch valve of railway health valve high sealing structure, comprises two internal and external threads seats 1, valve body 4, two support rings 2 and canvas filler rubber sleeve 3.
As shown in Figure 4, valve body 4 is sleeved on outside canvas filler rubber sleeve 3, valve body 4 is the tubulose of two ends symmetry, the outside at valve body 4 two ends has outside thread, the inside at valve body 4 two ends is provided with sealing surface 42 and sealed groove 43, valve body 4 internal diameter of sealing surface 42 to valve body 4 end face increases progressively thus in the two ends of valve body 4, forms V-type opening, and sealed groove 43 is arranged on the inner ring of V-type opening, and the inner ring of V-type opening is provided with two circle sealed grooves 43.The two ends of valve body 4 are respectively outside thread, and convenient and internal and external threads seat 1 is threaded connection, and has air chamber 5, valve body 4 offers the gas port 41 be connected with air chamber 5 between canvas filler rubber sleeve 3 and valve body 4.
Canvas filler rubber sleeve 3 is the tubulose of inner hollow, the length of canvas filler rubber sleeve 3 slightly larger than or equal the length of valve body 4.
As shown in Figure 5,6, support ring 2 is T-shaped tubulose, support ring 2 is provided with V-type face 21 near the outer ring of the one end at valve body 4 center, and the external diameter in V-type face 21 is increased progressively to the other end by support ring 2 one end near valve body center, and support ring 2 is provided with sealing configuration away from the end face of the one end at valve body 4 center.Sealing configuration is that ring is located at support ring 2 away from four circle projections on the end face of the one end at valve body 4 center, serrated slot 22 is formed between adjacent protrusion, 3 road serrated slot 22 altogether, support ring 2 has flange collar 23 away from the outer ring of the one end at valve body 4 center, the lower surface of flange collar 23 and be at least 1.6 (in the present embodiment, roughness is 1.6) with support ring 2 and the roughness of the surface of contact of rubber bush 3.The internal diameter d3 of support ring 2 is consistent with the internal diameter d1 of canvas filler rubber sleeve 3, and the outside diameter d 2 of the flange collar 23 of support ring 2 is greater than the internal diameter d1 of canvas filler rubber sleeve 3.Support ring 2 adopts polyoxymethylene material.
Internal and external threads seat 1 is hollow cylindrical body, has internal thread in the two ends of internal and external threads seat 1, and the exterior circumferential of internal and external threads seat 1 is provided with 4 platforms.
Canvas filler rubber sleeve 3 is filled in valve body 4, ensure that canvas filler rubber sleeve 3 surface there will not be to pull, scratch, two ends are pressed into support ring 2 in canvas filler rubber sleeve 3 simultaneously, the amount of deformation of canvas filler rubber sleeve 3 embeds in the two seals groove 43 of valve body 4 inwall, achieved the sealing (the first place seals) of canvas filler rubber sleeve 3 and valve body 4 by sealing surface 42 simultaneously, and the lower surface of the end face of canvas filler rubber sleeve 3 and support ring 2 flange collar 23 achieves end face seal (the second place seals), now, the internal thread of the outside thread of valve body 4 and internal and external threads seat 1 is threaded, make the internal and external threads seat 1 that screws up with a wrench, by the serrated slot 22 of support ring 2 flange collar 23 upper-end surface and the end face squeezed tight of internal and external threads seat 1, realize the end face seal (the 3rd place seals) of internal and external threads seat 1 and flange collar 23 upper-end surface.
As shown in Figure 3, the pressurized air of 200KPa is passed into pinch valve body (namely inputting arrow place), gas port 41 to pinch valve passes into the pressurized air of 450kpa (supply gas pressure that the railway system requires), canvas filler rubber sleeve 3 inwall is completely closed, whole pinch valve is rendered as cut-off state, and pinch valve is without any leakage, realize the sealing zero leakage of pinch valve.
Draw stress equation according to equation of equilibrium and yield condition and German DIN7190-1981 standard, calculated by equation, the sealing force of this three place sealing to be far longer than in runner medium and pressure chamber gas to the power of canvas filler rubber sleeve 3.And prove through overtesting, the working life of the pinch valve of this kind of sealing configuration can reach 400,000 times, well extends the working life of pinch valve, and achieves zero leakage.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (10)
1. the railway health valve pinch valve of high sealing structure, it is characterized in that: comprise two internal and external threads seats (1), valve body (4), two support rings (2) and canvas filler rubber sleeve (3), described valve body (4) is sleeved on canvas filler rubber sleeve (3) outward, two support rings (2) are arranged on the two ends of canvas filler rubber sleeve (3) respectively, and canvas filler rubber sleeve (3) two ends are tightly connected respectively by the press-in of support ring (2) and the two ends of valve body (4), two internal and external threads seats (1) are fixedly mounted on the two ends of valve body (4) respectively, air chamber (5) is had between described canvas filler rubber sleeve (3) and valve body (4), valve body (4) offers the gas port (41) be connected with air chamber (5), after the gas port (41) of described pinch valve is injected into pressurized air, described canvas filler rubber sleeve (3) is closed its inner passage after compressive strain, the gas port (41) of described pinch valve not injecting compressed air time described canvas filler rubber sleeve (3) inner passage unimpeded.
2. the railway health valve as claimed in claim 1 pinch valve of high sealing structure, it is characterized in that: the tubulose that described valve body (4) is two ends symmetry, the outside at valve body (4) two ends has outside thread, the inside at valve body (4) two ends is provided with sealing surface (42) and sealed groove (43), sealing surface (42) increases progressively to valve body (4) internal diameter of valve body (4) end face thus form V-type opening in the two ends of valve body (4), and sealed groove (43) is arranged on the inner ring of V-type opening.
3. the railway health valve pinch valve of high sealing structure as claimed in claim 2, is characterized in that: the inner ring of described V-type opening is provided with two circle sealed grooves (43).
4. the railway health valve as claimed in claim 1 pinch valve of high sealing structure, it is characterized in that: the tubulose that described canvas filler rubber sleeve (3) is inner hollow, the length of canvas filler rubber sleeve (3) slightly larger than or equal the length of valve body (4).
5. the railway health valve as claimed in claim 1 pinch valve of high sealing structure, it is characterized in that: described support ring (2) is T-shaped tubulose, support ring (2) is provided with V-type face (21) near the outer ring of the one end at valve body (4) center, the external diameter in V-type face (21) is increased progressively near the one end at valve body center by support ring (2), and support ring (2) is provided with sealing configuration away from the end face of the one end at valve body (4) center.
6. the railway health valve as claimed in claim 1 pinch valve of high sealing structure, it is characterized in that: described sealing configuration is that ring is located at support ring (2) away from the multi-turn projection on the end face of the one end at valve body (4) center, serrated slot (22) is formed between adjacent protrusion, support ring (2) has flange collar (23) away from the outer ring of the one end at valve body (4) center, and the roughness of the lower surface of described flange collar (23) is at least 1.6.
7. the railway health valve as claimed in claim 5 pinch valve of high sealing structure, it is characterized in that: the internal diameter of described support ring (2) is consistent with the internal diameter of canvas filler rubber sleeve (3), the external diameter of the flange collar (23) of support ring (2) is greater than the internal diameter of rubber bush (3).
8. the railway health valve pinch valve of high sealing structure as claimed in claim 5, is characterized in that: described support ring (2) adopts polyoxymethylene material.
9. the railway health valve as claimed in claim 5 pinch valve of high sealing structure, it is characterized in that: described internal and external threads seat (1) is hollow cylindrical body, have internal thread in the two ends of internal and external threads seat (1), the exterior circumferential of internal and external threads seat (1) is provided with platform.
10. the railway health valve pinch valve of high sealing structure as claimed in claim 9, is characterized in that: the exterior circumferential of described internal and external threads seat (1) is provided with 4 platforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673476.6A CN105276224A (en) | 2015-10-16 | 2015-10-16 | Pinch valve of high-sealing structure for railway sanitary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673476.6A CN105276224A (en) | 2015-10-16 | 2015-10-16 | Pinch valve of high-sealing structure for railway sanitary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105276224A true CN105276224A (en) | 2016-01-27 |
Family
ID=55145748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510673476.6A Pending CN105276224A (en) | 2015-10-16 | 2015-10-16 | Pinch valve of high-sealing structure for railway sanitary valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105276224A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439092A (en) * | 2016-12-06 | 2017-02-22 | 大连碧蓝节能环保科技有限公司 | Airbag valve with inner frame |
| CN108980402A (en) * | 2017-05-31 | 2018-12-11 | 橙果信息技术有限公司 | Pneumatic control valve and automatic juice extractor |
| CN108980417A (en) * | 2018-08-16 | 2018-12-11 | 叶露穗 | A kind of Pneumatic control type multiway valve |
| CN109058520A (en) * | 2018-08-23 | 2018-12-21 | 叶露穗 | A kind of Pneumatic control type multiway valve |
| CN111065852A (en) * | 2017-08-31 | 2020-04-24 | 株式会社富士金 | Joint block and method for manufacturing the same |
| WO2020211800A1 (en) * | 2019-04-19 | 2020-10-22 | 武汉圣禹排水***有限公司 | Rubber sleeve for pneumatic cut-off device, and pneumatic cut-off device |
| CN114277902A (en) * | 2021-11-20 | 2022-04-05 | 中国计量大学 | Electroless pure mechanical control logic actuator of vacuum toilet |
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| EP0780580A1 (en) * | 1995-12-22 | 1997-06-25 | Festo KG | Device for producing periodic impulse changes in a fluid flow, method for the operation and the use of the device |
| CN2408318Y (en) * | 1999-12-29 | 2000-11-29 | 江苏正昌集团公司 | Metal hoop stop valve |
| CN2544151Y (en) * | 2002-01-16 | 2003-04-09 | 姜虹 | Clamp valve |
| CN2644810Y (en) * | 2003-08-08 | 2004-09-29 | 河南安彩高科股份有限公司 | Pneumatic pinch valve |
-
2015
- 2015-10-16 CN CN201510673476.6A patent/CN105276224A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| EP0780580A1 (en) * | 1995-12-22 | 1997-06-25 | Festo KG | Device for producing periodic impulse changes in a fluid flow, method for the operation and the use of the device |
| CN2408318Y (en) * | 1999-12-29 | 2000-11-29 | 江苏正昌集团公司 | Metal hoop stop valve |
| CN2544151Y (en) * | 2002-01-16 | 2003-04-09 | 姜虹 | Clamp valve |
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Non-Patent Citations (1)
| Title |
|---|
| 冯子明: "《过程装备密封技术》", 30 June 2015, 中国石化出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439092A (en) * | 2016-12-06 | 2017-02-22 | 大连碧蓝节能环保科技有限公司 | Airbag valve with inner frame |
| CN106439092B (en) * | 2016-12-06 | 2018-07-03 | 大连碧蓝节能环保科技有限公司 | Inner support air bag valve |
| CN108980402A (en) * | 2017-05-31 | 2018-12-11 | 橙果信息技术有限公司 | Pneumatic control valve and automatic juice extractor |
| CN111065852A (en) * | 2017-08-31 | 2020-04-24 | 株式会社富士金 | Joint block and method for manufacturing the same |
| CN108980417A (en) * | 2018-08-16 | 2018-12-11 | 叶露穗 | A kind of Pneumatic control type multiway valve |
| CN109058520A (en) * | 2018-08-23 | 2018-12-21 | 叶露穗 | A kind of Pneumatic control type multiway valve |
| WO2020211800A1 (en) * | 2019-04-19 | 2020-10-22 | 武汉圣禹排水***有限公司 | Rubber sleeve for pneumatic cut-off device, and pneumatic cut-off device |
| CN114277902A (en) * | 2021-11-20 | 2022-04-05 | 中国计量大学 | Electroless pure mechanical control logic actuator of vacuum toilet |
| CN114277902B (en) * | 2021-11-20 | 2024-02-06 | 中国计量大学 | Electroless pure mechanical control logic actuator of vacuum toilet |
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| PB01 | Publication | ||
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Application publication date: 20160127 |