CN105422905B - A kind of end cover with stopping function - Google Patents

A kind of end cover with stopping function Download PDF

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Publication number
CN105422905B
CN105422905B CN201510977433.7A CN201510977433A CN105422905B CN 105422905 B CN105422905 B CN 105422905B CN 201510977433 A CN201510977433 A CN 201510977433A CN 105422905 B CN105422905 B CN 105422905B
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CN
China
Prior art keywords
cover
plate
stop block
piston
retreat stop
Prior art date
Application number
CN201510977433.7A
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Chinese (zh)
Other versions
CN105422905A (en
Inventor
刘钢海
王铁苗
Original Assignee
中国计量大学
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Filing date
Publication date
Application filed by 中国计量大学 filed Critical 中国计量大学
Priority to CN201510977433.7A priority Critical patent/CN105422905B/en
Publication of CN105422905A publication Critical patent/CN105422905A/en
Application granted granted Critical
Publication of CN105422905B publication Critical patent/CN105422905B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug 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
    • F16K5/08Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/12Covers for housings

Abstract

The invention discloses a kind of end cover with stopping function, be related to ball valve air tightness test machine field, including end cover body, fixed with end cover body afterbody end cap location-plate, be set in the extruding sleeve that can be slided in end cover body along end cover body, be set in end cover body and the sleeve location-plate with extruding sleeve afterbody fixation and the stopping mechanism that is arranged in end cover body;Sealing ring is also arranged with described end cover body, end cover body front end side wall is provided with the spacing preiection of sealing ring, and sealing ring is spacing between spacing preiection and extruding barrel forward end;Through end cover body and end cap location-plate provided with least one test stomata.The present invention proposes that a kind of ball valve end face does not stress, will not make the clamped deformation of ball valve and the end cover with automatic stopping function to solve the problem of current ball valve clamping is inconvenient, ball valve is easily deformed influence measuring accuracy.

Description

A kind of end cover with stopping function

Technical field

The present invention relates to ball valve air tightness test machine field, more particularly to a kind of end cover with stopping function.

Background technology

Ball valve is to make opening and closing element with the spheroid with manhole, and spheroid is rotated with valve rod, to realize the valve of switching motion. Ball valve is mainly used as cut-out, distribution and the flow direction for changing medium.

Industrial polythene PE ball valve is the important control unit of PE pipe networks, therefore is required using preceding using compressed gas as medium Carry out experiments of sealing performance.When prior art is tested ball valve, the outer of ball valve two ends is generally placed in using sealing gasket or sealing ring Portion, while ball valve two ends are clamped in force application apparatus such as cylinder or jack, so that sealing gasket or sealing ring and ball valve two End forms sealing, and the ball valve after whole sealing is immersed in the water, then examines its sealing toward compressed gas is passed through inside ball valve Energy.

Above-mentioned test method has the disadvantages that:1st, operating process is complicated, and its frame heavier-weight need to be by external equipment Frame is immersed in the water, and the installation of ball valve is also more bothered;2nd, pressing plate is pushed so as to close to ball valve progress using jack Envelope and sealing ring are placed in outside ball valve two ends, and when being sealed with cylinder clamping at ball valve two ends, the dynamics of both is all It is more difficult to control, if the power that pushes or clamps is inadequate, pressing plate and the sealing of ball valve end may be made not firm, so as to influence to try The accuracy tested, brings the erroneous judgement in quality, if the power for pushing or clamping is excessive, ball valve can be made to deform, cause ball valve End face out-of-flatness, so that can not form sealing between ball valve and pressing plate, brings the erroneous judgement in quality, in addition, pushing or pressing from both sides If tight power is excessive, ball valve also can be directly damaged.

The content of the invention

The present invention proposes to solve the problem of current ball valve clamping is inconvenient, ball valve is easily deformed influence measuring accuracy A kind of ball valve end face does not stress, will not make the clamped deformation of ball valve and the end cover with automatic stopping function.

To achieve these goals, the present invention uses following technical scheme:A kind of end cover with stopping function, bag Include end cover body, the end cap location-plate fixed with end cover body afterbody, be set in what can be slided in end cover body along end cover body Sleeve is extruded, is set in end cover body and with extruding the sleeve location-plate of sleeve afterbody fixation and being arranged in end cover body Stopping mechanism;Sealing ring is also arranged with described end cover body, end cover body front end side wall is spacing provided with sealing ring Projection, sealing ring is spacing between spacing preiection and extruding barrel forward end;Through end cover body and end cap location-plate provided with least One test stomata;Described stopping mechanism includes a retreat stop block, a contiguous block, a piston and a returning spring, Piston slideway is offered on described end cover body front end face, described piston is slidably disposed in piston slideway;It is described End cover body side wall on offer opening of allowing retreat stop block to pass through offered on the storage tank of retreat stop block, described extruding sleeve Hole, described retreat stop block can be moved up and down in storage tank, and the storage tank of retreat stop block is connected with the piston slideway of piston;Institute Provided with two fixed pulleys inside the retreat stop block stated;Described contiguous block one end is connected with piston, and the other end is in end cap central axle The knee of line bending, described knee can be stretched between two fixed pulleys of retreat stop block, and driving retreat stop block moves up and down;It is described Contiguous block on be also arranged with one be used for piston reply returning spring.

Preferably, described spacing preiection is identical provided with gradient with the face that extruding barrel forward end is spacing for sealing ring Chamfering.

Preferably, described end cap location-plate is in " work " font, surface both sides are provided with convex after described sleeve location-plate Block, projection is fastened in the breach of end cap location-plate both sides.

Preferably, being respectively provided with a bolt positioning hole on described four angles of end cap location-plate.

Preferably, described end cover body is provided with two stopping mechanisms, two stopping mechanisms are along end cap central axis It is symmetrical arranged.

Therefore, the present invention has the advantages that:1st, using the interior end cover designs for stretching formula, ball valve end face does not stress, carried High measuring accuracy;2nd, will not be convenient to insert with wall friction in ball valve when stretching mobile in end cap using extruding expansion sealing ring sealing Pull out;3rd, provided with stopping mechanism, prevent measuring air pressure excessive, end cap is retreated, influence measuring accuracy.

Brief description of the drawings

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the structural representation of another angle of the invention.

Fig. 3 is the top view of the present invention.

Fig. 4 is the sectional view of A-A in Fig. 3.

Fig. 5 is the front view of the present invention.

Fig. 6 is the sectional view of B-B in Fig. 5.

Fig. 7 is Fig. 5 right view.

Fig. 8 is Fig. 5 left view.

Fig. 9 is the structural representation of use state of the present invention.

1:End cover body;2:Extrude sleeve;3:Sleeve location-plate;4:End cap location-plate;5:Bolt positioning hole;6:Perforate; 7:Retreat stop block;8:Sealing ring;9:Piston slideway;10:Test stomata;11:Projection;12:Spacing preiection;13:Stopping mechanism;14: Piston;15:Contiguous block;16:Returning spring;17:Knee;18:Fixed pulley;19:Storage tank;20:Baffle plate;21:Ball valve.

Embodiment

The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.

A kind of end cover with stopping function, as shown in Figures 1 to 8, includes the end cover body of a cylindrical shape 1st, the end cap location-plate 4 fixed with the afterbody of end cover body 1, it is set in end cover body 1 extruded sleeve that can be slided along end cover body 1 Cylinder 2, be set in end cover body 1 and with extruding the afterbody of sleeve 2 fix sleeve location-plate 3 and be arranged in end cover body 1 Two stopping mechanisms 13;O-ring seal 8 is also arranged with described end cover body 1, the front end side wall of end cover body 1 is provided with close The spacing preiection 12 of seal 8, sealing ring 8 is spacing between spacing preiection 12 and extruding sleeve 2 front end, described spacing preiection 12 It is used for the spacing face of sealing ring 8 provided with the chamfering for being designed with 45 degree of gradients with extruding sleeve 2 front end;Through the He of end cover body 1 End cap location-plate 4 is provided with a test stomata 10.

Described end cap location-plate 4 is in " work " font, and surface both sides are provided with projection 11 after described sleeve location-plate 3, convex Block 11 is fastened in the breach of end cap location-plate both sides, can prevent extruding sleeve 2 from moving forward and backward crush seal along end cover body 1 When enclosing 8, rotate.

Two described stopping mechanisms 13 are set along end cap central axisymmetrical, and each stopping mechanism 13 is square including one Retreat stop block 7, a contiguous block 15, a piston 14 and a returning spring 16, open up on the described front end face of end cover body 1 There is piston slideway 9, described piston 14 is slidably disposed in piston slideway 9;Offered on the described side wall of end cover body 1 The perforate 6 for allowing retreat stop block 7 to pass through, described retreat stop block 7 are offered on the storage tank 19 of retreat stop block 7, described extruding sleeve 2 It can be moved up and down in storage tank 19, and the storage tank 19 of retreat stop block 7 is connected with the piston slideway 9 of piston 14;Described stops The inside of block 7 is moved back provided with two fixed pulleys 18;Described one end of contiguous block 15 is connected with piston 14, and the other end is in end cap central axle The knee 17 of line bending, described knee 17 can be stretched between two fixed pulleys 18 of retreat stop block 7, above and below the driving work of retreat stop block 7 It is mobile, when piston 14 is retreated, drive contiguous block 15 to retreat, knee of the fixed pulley 18 in retreat stop block 7 along the rear side of contiguous block 15 17 are rolled, and driving retreat stop block 7 is moved up;On the contrary, piston 14 moves forward, contiguous block 15 is driven to move forward, the edge of fixed pulley 18 in retreat stop block 7 The knee 17 for the rear side of contiguous block 15 is rolled, and driving retreat stop block 7 is moved down;One is also arranged with described contiguous block 15 is used to live The returning spring 16 that plug 14 is replied.

A bolt positioning hole 5 is respectively provided with described 4 four angles of end cap location-plate, described bolt positioning hole 5 is just The aircraft hole installed in bolt.

In use, as shown in figure 9, end cover body 1 first to be stretched into one end of ball valve 21, promotion extrudes the rear side sleeve of sleeve 2 The projection 11 of the both sides of location-plate 3, extruding sleeve 2 moves forward, crush seal circle 8, and the expanding extruding of sealing ring 8 is real in the inwall of ball valve 21 Now seal;By the test stomata 10 inside end cover, toward the interior ventilation pressurization of ball valve 21, at any time air pressure increase, end cover body 1 Interior piston 14, which is pressurized, to be retreated, and drives contiguous block 15 to retreat, knee of the fixed pulley 18 in retreat stop block 7 along the rear side of contiguous block 15 17 are rolled, and driving retreat stop block 7 is moved up, and is limited on the baffle plate 20 of test equipment, is prevented whole end cover by close beta gas Pressure increases and retreated, and influences measuring accuracy.After test terminates, air pressure inside is excluded out of test stomata 10, gas in ball valve 21 Pressure reduces, and piston 14 replys reach due to the effect of returning spring 16, drives contiguous block 15 to move forward, the fixed pulley in retreat stop block 7 18 are rolled along the knee 17 of the rear side of contiguous block 15, and driving retreat stop block 7 is moved down, and is lifted restrictions, and whole end cover just can be from Removed in ball valve 21, complete the test of a ball valve 21.

Claims (6)

1. a kind of end cover with stopping function, it is characterised in that:Including end cover body(1)With end cover body(1)Afterbody Fixed end cap location-plate(4), be set in end cover body(1)On can be along end cover body(1)The extruding sleeve of slip(2), be arranged In end cover body(1)Above and with extruding sleeve(2)The sleeve location-plate that afterbody is fixed(3)And it is arranged on end cover body(1)Interior Stopping mechanism(13);Described end cover body(1)On be also arranged with sealing ring(8), end cover body(1)Front end side wall is provided with close Seal(8)Spacing preiection(12), sealing ring(8)It is spacing in spacing preiection(12)With extruding sleeve(2)Between front end;Through end Lid main body(1)With end cap location-plate(4)Provided with least one test stomata(10);
Described stopping mechanism(13)Including a retreat stop block(7), a contiguous block(15), a piston(14)With a reply Spring(16), described end cover body(1)Piston slideway is offered on front end face(9), described piston(14)Slideably set Put in piston slideway(9)It is interior;Described end cover body(1)Retreat stop block is offered on the wall of side(7)Storage tank(19), described squeezes Gland cylinder(2)On offer permission retreat stop block(7)The perforate passed through(6), described retreat stop block(7)Can be in storage tank(19)It is interior to make Move up and down, and retreat stop block(7)Storage tank(19)With piston(14)Piston slideway(9)Connection;Described retreat stop block(7)It is interior Portion is provided with two fixed pulleys(18);Described contiguous block(15)One end and piston(14)It is connected, the other end is in end cap central axle The knee of line bending(17), described knee(17)Retreat stop block can be stretched into(7)Two fixed pulleys(18)Between, drive retreat stop block (7)Move up and down;Described contiguous block(15)On be also arranged with one be used for piston(14)The returning spring of reply(16).
2. a kind of end cover with stopping function according to claim 1, it is characterised in that:Described spacing preiection (12)With extruding sleeve(2)Front end is used for sealing ring(8)Spacing face is provided with gradient identical chamfering.
3. a kind of end cover with stopping function according to claim 1, it is characterised in that:Described end cap positioning Plate(4)In " work " font, described sleeve location-plate(3)Surface both sides are provided with projection afterwards(11), projection(11)It is fastened on end cap In the breach of location-plate both sides.
4. a kind of end cover with stopping function according to claim 1 or 3, it is characterised in that:Described end cap Location-plate(4)A bolt positioning hole is respectively provided with four angles(5).
5. a kind of end cover with stopping function according to any claim in claims 1 to 3, its feature exists In:Described end cover body(1)Provided with two stopping mechanisms(13), two stopping mechanisms(13)Along end cap central axisymmetrical Set.
6. a kind of end cover with stopping function according to claim 4, it is characterised in that:Described end cover body (1)Provided with two stopping mechanisms(13), two stopping mechanisms(13)Set along end cap central axisymmetrical.
CN201510977433.7A 2015-12-22 2015-12-22 A kind of end cover with stopping function CN105422905B (en)

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)

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CN105422905A CN105422905A (en) 2016-03-23
CN105422905B true CN105422905B (en) 2017-08-25

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Application Number Title Priority Date Filing Date
CN201510977433.7A CN105422905B (en) 2015-12-22 2015-12-22 A kind of end cover with stopping function

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL159040B1 (en) * 1988-12-21 1992-11-30 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 cap for testing ball valve sealing
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL159040B1 (en) * 1988-12-21 1992-11-30 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 cap for testing ball valve sealing
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

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