CN105422905A - Sealing end cover with retaining function - Google Patents
Sealing end cover with retaining function Download PDFInfo
- Publication number
- CN105422905A CN105422905A CN201510977433.7A CN201510977433A CN105422905A CN 105422905 A CN105422905 A CN 105422905A CN 201510977433 A CN201510977433 A CN 201510977433A CN 105422905 A CN105422905 A CN 105422905A
- Authority
- CN
- China
- Prior art keywords
- end cover
- cover body
- positioning plate
- stop block
- piston
- 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.)
- Granted
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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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
- F16K27/12—Covers for housings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses a sealing end cover with the retaining function, and relates to the field of gas tightness testing machines for ball valves. The sealing end cover comprises an end cover main body, an end cover positioning plate, a squeezing sleeve, a sleeve positioning plate and a retaining mechanism, wherein the end cover positioning plate is fixed with the tail of the end cover main body, the end cover main body is sleeved with the squeezing sleeve which can slide along the end cover main body, the end cover main body is sleeved with the sleeve positioning plate which is fixed with the tail of the squeezing sleeve, and the retaining mechanism is arranged inside the end cover main body. The end cover main body is further sleeved with a sealing ring. A limiting protrusion of the sealing ring is arranged on the side wall of the front end of the end cover main body. The sealing ring is limited between the limiting protrusion and the front end of the squeezing sleeve. At least one testing air hole penetrating through the end cover main body and the end cover positioning plate is formed. According to the sealing end cover with the retaining function, the problems that clamping of a ball valve is inconvenient at present, and the ball valve is prone to deformation so that the testing precision is affected are solved; the end face of the ball valve is not stressed, the ball valve is not deformed due to clamping, and the sealing end cover has the automatic retaining function.
Description
Technical field
The present invention relates to ball valve air tightness test machine field, particularly relate to a kind of end cover with stopping function.
Background technique
Ball valve makes open-shut device with the spheroid of band manhole, and spheroid rotates with valve rod, to realize the valve of switching motion.Ball valve is mainly used as cut-out, distributes and change the flow direction of medium.
Industrial polythene PE ball valve is the important controlling component of PE pipe network, requires with pressurized gas to be that medium carries out experiments of sealing performance before therefore using.When prior art is tested ball valve, usual employing sealing gasket or seal ring are placed in the outside at ball valve two ends, be clamped in ball valve two ends with the force application device such as cylinder or jack simultaneously, thus sealing gasket or seal ring and ball valve two ends are formed seal, ball valve after whole sealing is immersed in the water, then passes into pressurized gas toward ball valve inside and check its sealability.
Above-mentioned test method has following shortcoming: 1, operating process is complicated, and its frame heavier-weight, need be immersed in the water frame by external equipment, and the installation of ball valve also comparatively bothers, 2, adopt jack to press down pressing plate thus ball valve is sealed and seal ring to be placed in ball valve two ends outside, and by cylinder clamping when ball valve two ends seal, the all more difficult control of dynamics of both, the words that the power pressing down or clamp is inadequate, the sealing of pressing plate and ball valve end may be made not firm, thus the accuracy of impact test, bring qualitative erroneous judgement, the words that the power pressing down or clamp is excessive, ball valve can be made to deform, cause the out-of-flatness of ball valve end face, thus make cannot form sealing between ball valve and pressing plate, bring qualitative erroneous judgement, in addition, the words that the power pressing down or clamp is excessive, also directly ball valve can be damaged.
Summary of the invention
In order to solve, the clamping of current ball valve is inconvenient, the problem of the easy deformation effect testing precision of ball valve in the present invention, proposes a kind of ball valve end face and does not stress, ball valve can not be made to be clamped distortion and have the end cover of automatic stopping function.
To achieve these goals, the present invention is by the following technical solutions: a kind of end cover with stopping function, the end cap positioning plate comprise end cover body, fixing with end cover body afterbody, be set in end cover body can be slided along end cover body compression sleeve, be set in end cover body and the sleeve positioning plate fixed with compression sleeve afterbody and the stopping mechanism be arranged in end cover body; Described end cover body is also arranged with seal ring, and end cover body front end side wall is provided with the spacing preiection of seal ring, and seal ring is spacing between spacing preiection and compression sleeve front end; Run through end cover body and end cap positioning plate and be provided with at least one test pore; Described stopping mechanism comprises a retreat stop block, contiguous block, a piston and a returning spring, and described end cover body front-end face offers piston slideway, and described piston is slidably disposed in piston slideway; Described end cover body sidewall offers the containing groove of retreat stop block, described compression sleeve offers the perforate allowing retreat stop block to pass, described retreat stop block can move up and down in containing groove, and the containing groove of retreat stop block is communicated with the piston slideway of piston; Described retreat stop block inside is provided with two static pulley; Described contiguous block one end is connected with piston, and the other end is in the knee to end cap central axis bending, and described knee can stretch between two static pulley of retreat stop block, drives retreat stop block to move up and down; Described contiguous block is also arranged with a returning spring for piston revert.
As preferably, described spacing preiection is provided with the identical chamfering of gradient with compression sleeve front end for the face that seal ring is spacing.
As preferably, described end cap positioning plate is in " work " font, and described both sides, sleeve positioning plate rear surface are provided with projection, and projection is fastened in the breach of end cap positioning plate both sides.
As preferably, four angles are respectively provided with a bolt positioning hole with described end cap positioning plate.
As preferably, described end cover body is provided with two stopping mechanisms, and two stopping mechanisms are arranged along end cap central axisymmetrical.
Therefore, the present invention has following beneficial effect: the end cover designs of stretching formula in 1, adopting, and ball valve end face does not stress, and improves testing precision; 2, adopt the sealing of extruding expansion seal ring, when stretching mobile in end cap can not with wall friction in ball valve, convenient plug; 3, be provided with stopping mechanism, prevent measuring air pressure excessive, end cap retreats, and affects testing precision.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of another angle of the present invention.
Fig. 3 is plan view of the present invention.
Fig. 4 is the sectional view of A-A in Fig. 3.
Fig. 5 is plan view of the present invention.
Fig. 6 is the sectional view of B-B in Fig. 5.
Fig. 7 is the right elevation of Fig. 5.
Fig. 8 is the left view of Fig. 5.
Fig. 9 is the structural representation of using state of the present invention.
1: end cover body; 2: compression sleeve; 3: sleeve positioning plate; 4: end cap positioning plate; 5: bolt positioning hole; 6: perforate; 7: retreat stop block; 8: seal ring; 9: piston slideway; 10: test pore; 11: projection; 12: spacing preiection; 13: stopping mechanism; 14: piston; 15: contiguous block; 16: returning spring; 17: knee; 18: static pulley; 19: containing groove; 20: baffle plate; 21: ball valve.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments, the present invention will be further described.
A kind of end cover with stopping function, as shown in Figures 1 to 8, the end cap positioning plate 4 comprise the end cover body 1 of a cylindrical shape, fixing with end cover body 1 afterbody, be set in end cover body 1 can be slided along end cover body 1 compression sleeve 2, be set in end cover body 1 and the sleeve positioning plate 3 fixed with compression sleeve 2 afterbody and two stopping mechanisms 13 be arranged in end cover body 1; Described end cover body 1 is also arranged with O RunddichtringO 8, end cover body 1 front end side wall is provided with the spacing preiection 12 of seal ring 8, seal ring 8 is spacing between spacing preiection 12 and compression sleeve 2 front end, and described spacing preiection 12 and compression sleeve 2 front end are provided with the chamfering being all provided with 45 degree of gradients for the face that seal ring 8 is spacing; Run through end cover body 1 and end cap positioning plate 4 and be provided with a test pore 10.
Described end cap positioning plate 4 is in " work " font, described both sides, sleeve positioning plate 3 rear surface are provided with projection 11, projection 11 is fastened in the breach of end cap positioning plate both sides, compression sleeve 2 can being prevented when moving forward and backward crush seal circle 8 along end cover body 1, rotating.
Two described stopping mechanisms 13 are arranged along end cap central axisymmetrical, each stopping mechanism 13 comprises square retreat stop block 7, contiguous block 15, piston 14 and a returning spring 16, described end cover body 1 front-end face offers piston slideway 9, and described piston 14 is slidably disposed in piston slideway 9; Described end cover body 1 sidewall offers the containing groove 19 of retreat stop block 7, described compression sleeve 2 offers the perforate 6 allowing retreat stop block 7 to pass, described retreat stop block 7 can move up and down in containing groove 19, and the containing groove 19 of retreat stop block 7 is communicated with the piston slideway 9 of piston 14; Described retreat stop block 7 inside is provided with two static pulley 18; Described contiguous block 15 one end is connected with piston 14, the other end is in the knee 17 to end cap central axis bending, described knee 17 can stretch between two static pulley 18 of retreat stop block 7, retreat stop block 7 is driven to move up and down, when piston 14 retreats, drive contiguous block 15 to retreat, the knee 17 of the static pulley 18 in retreat stop block 7 on rear side of contiguous block 15 rolls, and drives on retreat stop block 7 and moves; On the contrary, piston 14 moves forward, and drive contiguous block 15 to move forward, the knee 17 of the static pulley 18 in retreat stop block 7 on rear side of contiguous block 15 rolls, and drives retreat stop block 7 to move down; Described contiguous block 15 is also arranged with a returning spring 16 of replying for piston 14.
4 four angles are respectively provided with a bolt positioning hole 5 with described end cap positioning plate, the aircraft hole that described bolt positioning hole 5 is installed for ease of bolt.
During use, as shown in Figure 9, first end cover body 1 is stretched into one end of ball valve 21, promote the projection 11 of sleeve positioning plate 3 both sides on rear side of compression sleeve 2, compression sleeve 2 moves forward, crush seal circle 8, and seal ring 8 expanding extruding, at ball valve 21 inwall, realizes sealing; By the test pore 10 of end cover inside, ventilation pressurization in ball valve 21, air pressure increases at any time, piston 14 pressurized in end cover body 1 retreats, and drive contiguous block 15 to retreat, the knee 17 of the static pulley 18 in retreat stop block 7 on rear side of contiguous block 15 rolls, drive on retreat stop block 7 and move, be limited on the baffle plate 20 of testing apparatus, prevent whole end cover from retreating by close beta air pressure increases, affect testing precision.After test terminates, air pressure inside is got rid of in test pore 10, ball valve 21 internal air pressure reduces, and piston 14, due to the effect of returning spring 16, replys reach, contiguous block 15 is driven to move forward, the knee 17 of static pulley 18 in retreat stop block 7 on rear side of contiguous block 15 rolls, and drives retreat stop block 7 to move down, lifts restrictions, whole end cover just can shift out in ball valve 21, completes the test of a ball valve 21.
Claims (6)
1. there is an end cover for stopping function, it is characterized in that: comprise end cover body (1), the end cap positioning plate (4) fixing with end cover body (1) afterbody, be set in end cover body (1) can be slided along end cover body (1) compression sleeve (2), be set in end cover body (1) upper and the sleeve positioning plate (3) fixed with compression sleeve (2) afterbody and the stopping mechanism (13) be arranged in end cover body (1); Described end cover body (1) is also arranged with seal ring (8), and end cover body (1) front end side wall is provided with the spacing preiection (12) of seal ring (8), and seal ring (8) is spacing between spacing preiection (12) and compression sleeve (2) front end; Run through end cover body (1) and end cap positioning plate (4) and be provided with at least one test pore (10);
Described stopping mechanism (13) comprises a retreat stop block (7), contiguous block (15), a piston (14) and a returning spring (16), described end cover body (1) front-end face offers piston slideway (9), and described piston (14) is slidably disposed in piston slideway (9); Described end cover body (1) sidewall offers the containing groove (19) of retreat stop block (7), described compression sleeve (2) offers the perforate (6) allowing retreat stop block (7) to pass, described retreat stop block (7) can move up and down in containing groove (19), and the containing groove (19) of retreat stop block (7) is communicated with the piston slideway (9) of piston (14); Described retreat stop block (7) inside is provided with two static pulley (18); Described contiguous block (15) one end is connected with piston (14), the other end is in the knee (17) to end cap central axis bending, described knee (17) can stretch between two static pulley (18) of retreat stop block (7), drives retreat stop block (7) to move up and down; Described contiguous block (15) is also arranged with a returning spring (16) of replying for piston (14).
2. a kind of end cover with stopping function according to claim 1, is characterized in that: described spacing preiection (12) is provided with the identical chamfering of gradient with compression sleeve (2) front end for the face that seal ring (8) is spacing.
3. a kind of end cover with stopping function according to claim 1, it is characterized in that: described end cap positioning plate (4) is in " work " font, described sleeve positioning plate (3) both sides, rear surface are provided with projection (11), and projection (11) is fastened in the breach of end cap positioning plate both sides.
4. a kind of end cover with stopping function according to claim 1 or 3, is characterized in that: (4) four angles are respectively provided with a bolt positioning hole (5) with described end cap positioning plate.
5. a kind of end cover with stopping function according to claim arbitrary in claims 1 to 3, it is characterized in that: described end cover body (1) is provided with two stopping mechanisms (13), two stopping mechanisms (13) are arranged along end cap central axisymmetrical.
6. a kind of end cover with stopping function according to claim 4, is characterized in that: described end cover body (1) is provided with two stopping mechanisms (13), and two stopping mechanisms (13) are arranged along end cap central axisymmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977433.7A CN105422905B (en) | 2015-12-22 | 2015-12-22 | A kind of end cover with stopping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977433.7A CN105422905B (en) | 2015-12-22 | 2015-12-22 | A kind of end cover with stopping function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422905A true CN105422905A (en) | 2016-03-23 |
| CN105422905B CN105422905B (en) | 2017-08-25 |
Family
ID=55501341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977433.7A Expired - Fee Related CN105422905B (en) | 2015-12-22 | 2015-12-22 | A kind of end cover with stopping function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422905B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL159040B1 (en) * | 1988-12-21 | 1992-11-30 | Os Bad Rozwojowy Gospodarki Re | Device for checking the tightness of a high-pressure fitings, especially for valves at pressure test |
| KR20080029595A (en) * | 2006-09-29 | 2008-04-03 | 양현태 | Leakage tester for a valve |
| CN104165734A (en) * | 2014-07-08 | 2014-11-26 | 宁波市宇华电器有限公司 | End cover for testing sealing performance of ball valve |
| CN204649358U (en) * | 2015-06-02 | 2015-09-16 | 宁波市宇华电器有限公司 | Ball valve air-tight test end cover mechanism |
| CN104949800A (en) * | 2014-03-27 | 2015-09-30 | 南京泉峰汽车精密技术有限公司 | Sealing and leak hunting device |
-
2015
- 2015-12-22 CN CN201510977433.7A patent/CN105422905B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL159040B1 (en) * | 1988-12-21 | 1992-11-30 | Os Bad Rozwojowy Gospodarki Re | Device for checking the tightness of a high-pressure fitings, especially for valves at pressure test |
| KR20080029595A (en) * | 2006-09-29 | 2008-04-03 | 양현태 | Leakage tester for a valve |
| CN104949800A (en) * | 2014-03-27 | 2015-09-30 | 南京泉峰汽车精密技术有限公司 | Sealing and leak hunting device |
| CN104165734A (en) * | 2014-07-08 | 2014-11-26 | 宁波市宇华电器有限公司 | End cover for testing sealing performance of ball valve |
| CN204649358U (en) * | 2015-06-02 | 2015-09-16 | 宁波市宇华电器有限公司 | Ball valve air-tight test end cover mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422905B (en) | 2017-08-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant after: CHINA JILIANG UNIVERSITY Address before: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant before: China Jiliang University |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20191222 |