CN205446729U - Novel selection valve - Google Patents

Abstract

The utility model relates to a novel selection valve, including air inlet, valve body, gas outlet, pressure cap, piston rod, ring, slip cap, gland, spring, steel ball, air chamber, cylinder, piston, 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 lower extreme and body seals contact form the valve, the piston upper end is sealed to slide and is being pressed cap upper portion hole, and piston middle part and pressure cap inner chamber sealing connection form the air chamber, end screw thread connection is in the valve body under pressing the cap to piece together the fastening and decide on the valve body, press cap upper end middle part porose, evenly distributed is on the face of cylinder, and the steel ball of packing into on the hole, and the steel ball radially rolls at kong shangzuo, has the slip cap spacing outward, has the spring on the slip cap, and the spring is compressed tightly by the gland screw and is pressing the cap upper end, the slip cap is outer slotted, and the inslot studs with the ring, the ring stretch out the end in by the cylinder piston head support tightly. 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 novel selector valve

Technical field

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

Background technology

Novel selector valve, is valve disconnected for fire-fighting fire extinguishing gas long-distance sand transport, logical.The novel 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, air chamber 06, cylinder 07, gas passage 08, piston 09,0 shape sealing ring 010, air inlet 011, bearing pin 012, pressure arm 013, handle 014, rotating shaft 015, spring leaf 016, spring 017, pivoted arm 018；Cylinder 07 is arranged on valve body 01 side, relative with gas outlet 02；Piston 09 is arranged in valve body 01, and lower end is in sealing contact with 0 shape sealing ring 010 in valve body 01, forms valve；Piston 09 upper end seals the endoporus in the middle part of pressure cap 04 that slides, and in the middle part of piston 09, lining 03 is connected with pressure cap 04 bore seal, forms air chamber 06；Pressure cap 04 lower end is threaded in valve body 01, has certain orientation to limit on valve body 01, and pressure cap is upper parallel equipped with rotating shaft 015 with bearing pin 012；Pressure arm 013 is rotatably installed on bearing pin 012, head, by there being spring leaf 016 jack-up under rotating shaft 015 half-round position locking or unlatching, and head, can guarantee that rotating shaft 015 half-round position locking, middle part is equipped with interior hexagonal holding screw 05, gap between scalable pressure arm 013 and piston 09 head；Equipped with handle 014 and pivoted arm 016 in rotating shaft 015, pivoted arm 016 has spring 017 spacing with piston contact in cylinder 07, rotating shaft 015 half-round position locking or open that pressure arm 013 is dynamic by handle 014 plate or in cylinder 07, piston pushes pivoted arm 016 and rotates and control.

The operation principle of novel selector valve is as follows: during work, pushed by piston in cylinder 07 or handle 014 plate moves pivoted arm 016 and rotates, 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 09 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, needing pressure arm 013 to depress, under spring leaf 016 and spring 017 act on, pressure arm 013 head enters semicircle position auto lock in rotating shaft 015, closes valve.

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

1) valve nominal operating pressure is the biggest, acts on power on valve inner carrier 09 the biggest, and the power suffered by same purpose pressure arm 013 on piston 09 head is the biggest.One of: bearing pin 012, the rotating shaft 015 that is locked at pressure arm 013 equipped with pressure arm 013 are the most easily deformed；Two: valve opening, open pressure arm 013 head shaft 015 half-round position locking device, need to act on the cylinder 07 of power bigger on handle 014 and bigger specification.

2) valve nominal operating pressure is the biggest, and piston 09 is under air inlet 011 gases at high pressure effect, and in valve opening moment, the action that piston 09 slides at pressure cap 04 is the most fierce, and acting on the pressure arm 013 on bearing pin 012, to invert impulse force the biggest, there is unsafe factor.

Utility model content

Technical problem to be solved in the utility model is to provide that a kind of valve opening is light, action safety and precise, the novel selector valve of satisfactory quality.

For solving above-mentioned technical problem, a kind of novel selector valve of this utility model, including air inlet, valve body, gas outlet, pressure cap, piston rod, backing ring, slip cap, gland, spring, steel ball, air chamber, cylinder, piston；Cylinder is arranged on valve body side, relative with gas outlet；Piston is arranged in valve body, and lower end contacts with valve seal, forms valve；Piston upper end seals slides at pressure cap top endoporus, is connected with pressure cap bore seal, forms air chamber in the middle part of piston；Pressure cap lower end is threaded in valve body, and spells on valve body and fasten, and pressure cap upper center is porose, being evenly distributed on the face of cylinder, and load steel ball on hole, steel ball is radial rolling at Kong Shangzuo, having outward slip cap spacing, slip cap has spring, spring is pressed on pressure cap upper end by gland screw thread；Having groove outside slip cap, stud with backing ring in groove, backing ring external part is pushed against by piston head in cylinder.

Having slip cap spacing outside described steel ball, slip cap is fixed by the gland being arranged on pressure cap, between buffer equipped with spring.

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

1) it is that steel ball is by piston crown, pressure cap steel ball hole wall, three the direction force effects of slip cap inwall, i.e. ball lock Piston Process due to valve closing；Valve opening needs to break that to act on steel ball three direction force balances the most permissible.

2) steel ball balance is by piston crown, pressure cap steel ball hole wall, three direction active forces of slip cap inwall；Open valve only to push backing ring by little force and drive and move on slip cap, remove active force on slip cap inwall and make steel ball enter to outer rolling in slip cap inner wall groove under piston crown pressure effect, piston with on move and open valve.

3) due to open on valve piston move be to carry out in valve body, pressure cap, can guarantee that valve events is safe and reliable.

4) after hours, pressing under piston, slip cap moves under the action of the spring, and steel ball inward roll, to pushing against piston crown, closes valve.

Accompanying drawing explanation

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

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

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

Fig. 4 is the structural representation of a kind of novel selector valve of this utility model.

Fig. 5 is valve opening structure schematic diagram in Fig. 4.

Wherein:

In prior art: 01, valve body；02, gas outlet；03, lining；04, pressure cap；05, interior hexagonal holding screw；06, air chamber；07, cylinder；08, gas passage；09, piston；010,0 shape sealing ring；011, air inlet；012, bearing pin；013, pressure arm；014, handle；015, rotating shaft；016, spring leaf；017, spring；018, pivoted arm.

This utility model: 1, air inlet；2, valve body；3, gas outlet；4, pressure cap；5, piston rod；6, backing ring；7, slip cap；8, gland；9, spring；10, steel ball；11, air chamber；12, cylinder；13, piston.

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 novel selector valve of Fig. 4, Fig. 5 this utility model, including air inlet 1, valve body 2, gas outlet 3, pressure cap 4, piston rod 5, backing ring 6, slip cap 7, gland 8, spring 9, steel ball 10, air chamber 11, cylinder 12, piston 13；Cylinder 12 is arranged on valve body 2 side, relative with gas outlet 3；Piston 13 is arranged in valve body 2, and lower end is in sealing contact with valve body 2, forms valve；Piston 13 upper end seals slides at pressure cap 4 top endoporus, is connected with pressure cap 4 bore seal, forms air chamber 11 in the middle part of piston 13；Pressure cap 4 lower end is threaded in valve body 2, and spell on valve body 2 and to fasten, pressure cap 4 upper center is porose, it is evenly distributed on the face of cylinder, and on hole, loading steel ball 10, steel ball 10 is radial rolling at Kong Shangzuo, has outward slip cap 7 spacing, having spring 9 on slip cap 7, spring 9 is pressed on pressure cap 4 upper end by gland 8 screw thread；Having groove outside slip cap 7, stud with backing ring 6 in groove, backing ring 6 external part is pushed against by piston head in cylinder 12.

Having slip cap 7 spacing outside described steel ball 10, slip cap 7 is fixed by the gland 8 being arranged on pressure cap 4, between buffer equipped with spring 9.

Studding with backing ring 6 outside described slip cap 7, backing ring 6 offsets with cylinder 12 piston.

Work process of the present utility model is as follows:

1) valve working process；Cylinder 12 action, cylinder 12 piston pushes backing ring 6 and drives shifting on slip cap 7, make slip cap 7 inwall be pressed in power on steel ball 10 to disappear, piston 13 pushes steel ball 10 at valve air inlet 1 gas pressure lower piston 13 head and is outwards rolled in slip cap 7 inner wall groove, steel ball 10 is pressed in piston 13 head upward pressure and disappears, on piston 13 move open valve, gas from air inlet 1 through flow direction valve gas outlet 3.

2) after having worked, needing by lower piston 13 head, slip cap 7 moves downward in spring 9 power effect, and extruding steel ball 10 inward roll is to clamping piston 13 head, closing valve, steel ball 10 keeps balance in piston 13 head, pressure cap 4 steel ball 10 hole wall, three the direction force effects of slip cap 7 inwall.

Claims (2)

1. a novel selector valve, it is characterised in that: include air inlet (1), valve body (2), gas outlet (3), pressure cap (4), piston rod (5), backing ring (6), slip cap (7), gland (8), spring (9), steel ball (10), air chamber (11), cylinder (12) and piston (13)；Described cylinder (12) is arranged on valve body (2) side, relative with gas outlet (3)；Piston (13) is arranged in valve body (2), and lower end is in sealing contact with valve body (2), forms valve；Piston (13) upper end seals slides at pressure cap (4) top endoporus, and piston (13) middle part is connected with pressure cap (4) bore seal, forms air chamber (11)；Fasten in pressure cap (4) lower end is threaded in valve body (2) and in the upper spelling of valve body (2)；Pressure cap (4) upper center is porose, is evenly distributed on the face of cylinder, and hole loads steel ball (10), and steel ball (10) is radial rolling at Kong Shangzuo；There is slip cap (7) spacing outside steel ball (10), slip cap (7) has spring (9), spring (9) are pressed on pressure cap (4) upper end by gland (8) screw thread；Slip cap has groove outside (7), studs with backing ring (6) in groove, and backing ring (6) external part is pushed against by piston head in cylinder (12).

The novel selector valve of one the most according to claim 1, it is characterised in that: slip cap (7) is fixed by the gland (8) being arranged on pressure cap (4).