CN205446750U

CN205446750U - Selection valve

Info

Publication number: CN205446750U
Application number: CN201620194773.2U
Authority: CN
Inventors: 翁国栋; 沈云奇; 袁斌
Original assignee: Ningbo Sanan Valve Manufacture Co ltd
Current assignee: Ningbo Sanan Valve Manufacture Co ltd
Priority date: 2016-03-14
Filing date: 2016-03-14
Publication date: 2016-08-10
Anticipated expiration: 2026-03-14

Abstract

The utility model relates to a selection valve, including valve body, gas outlet, bush, pressure cap, interior hexagonal holding screw, cylinder, piston, 0 shape sealing washer, air inlet, round pin axle, pressure arm, handle, pivot, rocking arm, the cylinder is installed in valve body one side, and is relative with the gas outlet, the piston is installed in the valve body, and the lower extreme is sealed with 0 shape sealing washer of valve body, forms the valve, piston upper portion and piston middle part bush with press cap inner chamber sealing connection and form the air chamber between, end screw thread connection is in the valve body under pressing the cap to the cap upper end is pressed in the location on the valve body, the upper end parallel is equipped with pivot and round pin axle, the pressure arm rotates to be installed at the round pin epaxially, and the pressure arm head is by the position locking of pivot semicircle or open, and interior hexagonal holding screw, adjustable pressure arm and piston head splaying are equipped with to the middle part, handle and rocking arm be equipped with in the pivot, pivot semicircle position locking or open the pressure arm in by handle or cylinder piston head operation arm control. The structure is simpler, can guarantee the valve and close sealedly that the piston motion deviation is more little, and the valve is closed smoothly more.

Description

A kind of selector valve

Technical field

This utility model relates to the technical field of valve, is especially a kind of selector valve disconnected for fire-fighting fire extinguishing gas long-distance sand transport, logical.

Background technology

Selector valve, is valve disconnected for fire-fighting fire extinguishing gas long-distance sand transport, logical.The selector valve of prior art, as shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, it includes valve body 01, gas outlet 02, lining 03, pressure cap 04, interior hexagonal holding screw 05, cylinder 06, piston 07, sealing gasket 08, pressure ring 09, soket head cap screw 010, air inlet 011, bearing pin 012, pressure arm 013, handle 014, rotating shaft 015, pivoted arm 016；Cylinder 06 is arranged on valve body 01 side, relative with gas outlet 02；Piston 07 is arranged in valve body 01, and lower end, equipped with sealing gasket 08, pressure ring 09, is compressed by soket head cap screw 010, and sealing gasket 08 inner ring seals with valve body 01 with piston seal, sealing gasket 08 outer ring, forms valve；Piston 07 upper end, middle part lining 03 are connected with pressure cap 04 inner chamber upper-lower seal, intermediate formation air chamber；Pressure cap 04 lower end is threaded in valve body 01, valve body 01 has on, pressure cap upper end, upper end is parallel equipped with rotating shaft 015 with bearing pin 012；Pressure arm 013 is rotatably installed on bearing pin 012, and pressure arm head is by rotating shaft 015 half-round position locking or unlatching, and middle part is equipped with interior hexagonal holding screw 05, gap between scalable pressure arm 013 and piston 07 upper end；Equipped with handle 014 and pivoted arm 016 in rotating shaft 015, rotating shaft 012 half-round position locking or open pressure arm 013 and pushed pivoted arm 016 by piston in handle 014 or cylinder 06 and rotate and control.

The operation principle of selector valve is as follows: during work, pushed pivoted arm 016 by piston in cylinder 06 to rotate, pivoted arm 016 drives rotating shaft 015 to rotate counterclockwise, the power being pressed on pressure arm 013 head is unclamped at rotating shaft 015 semicircle position, piston 06 under air inlet 011 internal pressure differences effect on move, open valve, gas from air inlet 011 through flow direction valve gas outlet 02；After completing work, need pressure arm 013 to depress, make pressure arm 013 head enter half-round position locking in rotating shaft 015, close valve.

But, there is following shortcoming in the selector valve of above-mentioned this structure:

1) it is to be adjusted compression by hexagonal holding screw 05 in pressure arm 013 due to piston 07 top, during work, piston 07 bottom surface is under inlet pressure effect, open and close valve easily causes piston 07 deforming tops, piston 07 deforming tops affects interporal lacuna in the pressure cap 04 coordinating slip with it, makes valve opening and closes difficulty.

2) moving on valve opening piston 07, valve closing piston 07 moves down；Owing to piston 07 upper end, middle part lining 03 move up and down at pressure cap 04 inner chamber, piston 07 guides apart from the shortest, and it is the biggest that piston 07 moves down deviation, and closedown valve is the most difficult, and occurs that phenomenon is cut in sealing gasket 08 outer ring.

3) after valve opening, gas from air inlet 011 through flow direction valve gas outlet 02；Owing to sealing gasket 08 is in piston 07 bottom surface, under gases at high pressure mobilization, sealing gasket 08 easily occurs turning over stripping, seals when affecting valve closing.

Utility model content

Technical problem to be solved in the utility model is to provide one, and piston seal performance is good, move up and down accurately, the selector valve of satisfactory quality.

For solving above-mentioned technical problem, a kind of selector valve that this utility model provides, including valve body, gas outlet, lining, pressure cap, interior hexagonal holding screw, cylinder, piston, 0 shape sealing ring, air inlet, bearing pin, pressure arm, handle, rotating shaft, pivoted arm；Cylinder is arranged on valve body side, relative with gas outlet；Piston is arranged in valve body, and lower end seals with valve body 0 shape sealing ring, forms valve；In the middle part of upper piston area and piston, lining is connected with pressure cap bore seal, between formed air chamber；Pressure cap lower end is threaded in valve body, and is positioned on valve body, pressure cap upper end, and upper end is parallel equipped with rotating shaft with bearing pin；Pressure arm is rotatably installed on bearing pin, and pressure arm head is by rotating shaft half-round position locking or unlatching, and middle part is equipped with interior hexagonal holding screw, scalable pressure arm and piston tip gap；Equipped with handle and pivoted arm in rotating shaft, rotating shaft half-round position locking or unlatching pressure arm are pushed pivoted arm by piston in handle or cylinder and control.

Described piston base is cylinder, and piston seals with 0 shape sealing ring in valve body, forms valve.

Having seal groove in described valve body, groove is in sealing contact with piston base built with 0 shape sealing ring, 0 shape sealing ring.

In the middle part of described piston, lining is connected with pressure cap bore seal and can move up and down.

There is fillet on described piston-top surface, below fillet, have fillet surface.

Enlarging is had on hole exits in described pressure cap.

After using above structure, this utility model compared with prior art, has the advantage that

1) being cylinder due to piston base, structure is simpler.

2) 0 shape sealing ring in valve seal groove, is in valve air inlet one side, and the flowing of valve opening gases at high pressure does not interferes with 0 shape sealing ring shift in position, can guarantee that valve closing seals.

3) in the middle part of piston, lining lengthens, and from the point of view of moving piston, guidance quality is the best, and piston movement deviation is the least, and valve closing is the most smooth and easy.

4) have on upper piston area cylinder end face under arc surface, and arc surface and have chamfering inclined-plane；So piston structure strengthens and pressure cap inner hole gap, makes pressure arm add the power being pressed on piston-top surface and causes piston-top surface to deform, does not interferes with piston and slide up and down in pressure cap.

5) enlarging on hole exits in pressure cap, it is contemplated that upper piston area end face deforms and do not affects use function and increase dual fail-safe.

Accompanying drawing explanation

Fig. 1 is the structural representation of selector valve in prior art.

Fig. 2 is the structural representation of A-A in Fig. 1.

Fig. 3 be in Fig. 1 B to structural representation.

Fig. 4 is the structural representation of selector valve in prior art.

Fig. 5 is the structural representation of A-A in Fig. 4.

Fig. 6 be in Fig. 4 B to structural representation.

Wherein:

In prior art: 01, valve body；02, gas outlet；03, lining；04, pressure cap；05, interior hexagonal holding screw；06, cylinder；07, piston；08, sealing gasket；09, pressure ring；010, soket head cap screw；011, air inlet；012, bearing pin；013, pressure arm；014, handle；015, rotating shaft；016, pivoted arm.

This utility model: 1, valve body；2, gas outlet；3, lining；4, pressure cap；5, interior hexagonal holding screw；6, cylinder；7, piston；8,0 shape sealing ring；9, air inlet；10, bearing pin；11, pressure arm；12, handle；13, rotating shaft；14, pivoted arm.

Detailed description of the invention

With detailed description of the invention, this utility model is described in more detail below in conjunction with the accompanying drawings.

From the structural representation of a kind of selector valve of Fig. 4, Fig. 5, Fig. 6 this utility model, including valve body 1；Gas outlet 2；Lining 3；Pressure cap 4；Interior hexagonal holding screw 5；Cylinder 6；Piston 7；0 shape sealing ring 8；Air inlet 9；Bearing pin 10；Pressure arm 11；Handle 12；Rotating shaft 13；Pivoted arm 14.Cylinder 6 is arranged on valve body 1 side, relative with gas outlet 2；Piston 7 is arranged in valve body 1, and lower end seals with valve body 10 shape sealing ring 8, forms valve；There is lining 3 in the middle part of piston 7, and be connected with pressure cap 4 bore seal, form air chamber；Pressure cap 4 is stretched out at piston 7 top, and interior hexagonal holding screw 5 offsets with pressure arm 11；Pressure cap 4 lower end is threaded in valve body 1, and is positioned on valve body 1, pressure cap upper end, and pressure cap 4 upper end is parallel equipped with rotating shaft 13 with bearing pin 10；Pressure arm 14 is rotatably installed on bearing pin 10, and pressure arm head is by rotating shaft 13 half-round position locking or unlatching, and middle part is equipped with interior hexagonal holding screw 5, scalable pressure arm 11 and piston 7 top clearance；Equipped with handle 12 and pivoted arm 14 in rotating shaft 13, rotating shaft 13 half-round position locking or unlatching pressure arm 11 are pushed pivoted arm 14 by piston in handle 12 or cylinder and control.

Being cylinder bottom described piston 7, structure is simpler.

Having at described valve body 1 inner chamber valve equipped with 0 shape sealing ring 8 in seal groove, and groove, it is in valve air inlet one side, and the flowing of valve opening gases at high pressure does not interferes with 0 shape sealing ring shift in position, can guarantee that valve closing seals.

In the middle part of described piston 7, lining 3 lengthens, and from the point of view of moving piston 7, guidance quality is the best, and piston 7 movement warp is the least, and valve closing is the most smooth and easy.

Have under arc surface, and arc surface on described piston 7 Upper cylindrical end face and have chamfering inclined-plane；So piston 7 structure strengthens and pressure cap inner hole gap, makes pressure arm 11 add the power being pressed on piston 7 end face and causes piston 7 end face to deform, does not interferes with piston 7 and slide up and down in pressure cap 4.

There is enlarging on hole exits in described pressure cap 4, make the deformation of piston 7 upper top not affect use function and increase dual fail-safe.

Claims

1. a selector valve, including valve body (1), gas outlet (2), lining (3), pressure cap (4), interior hexagonal holding screw (5), cylinder (6), piston (7), 0 shape sealing ring (8), air inlet (9), bearing pin (10), pressure arm (11), handle (12), rotating shaft (13) and pivoted arm (14)；Cylinder (6) is arranged on valve body (1) side, relative with gas outlet (2)；Piston (7) is arranged in valve body (1), and lower end seals with valve body (1) 0 shape sealing ring (8), forms valve；There is lining (3) at piston (7) middle part, and is connected with pressure cap (4) bore seal, forms air chamber；Pressure cap (4) is stretched out at piston (7) top, and interior hexagonal holding screw (5) offsets with pressure arm (11)；In pressure cap (4) lower end is threaded in valve body (1), and being positioned on valve body (1), pressure cap upper end, pressure cap (4) upper end is parallel equipped with rotating shaft (13) with bearing pin (10)；Pressure arm 14 is rotatably installed on bearing pin (10), pressure arm head is by rotating shaft (13) half-round position locking or unlatching, middle part is equipped with interior hexagonal holding screw (5), scalable pressure arm (11) and piston (7) top clearance；Equipped with handle (12) and pivoted arm (14) in rotating shaft (13), rotating shaft (13) half-round position locking or unlatching pressure arm (11) are pushed pivoted arm (14) by piston in handle (12) or cylinder and control.

A kind of selector valve the most according to claim 1, it is characterised in that: described piston (7) bottom is cylinder.

A kind of selector valve the most according to claim 1, it is characterized in that: at described valve body (1) inner chamber valve, have seal groove, and equipped with 0 shape sealing ring (8) in groove, 0 shape sealing ring (8) forms valve with piston (7) sealed bottom.

A kind of selector valve the most according to claim 1, it is characterised in that: described piston (7) middle part lining (3) is connected with pressure cap (4) bore seal and can move up and down.

A kind of selector valve the most according to claim 4, it is characterised in that: have under arc surface, and arc surface on described piston (7) Upper cylindrical end face and have chamfering inclined-plane.

A kind of selector valve the most according to claim 1, it is characterised in that: there is enlarging on described pressure cap (4) interior hole exits.