CN103768749B

CN103768749B - Sensitive adjustable anti-reset valve

Info

Publication number: CN103768749B
Application number: CN201410031667.8A
Authority: CN
Inventors: 朱铁强
Original assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Current assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Priority date: 2014-01-23
Filing date: 2014-01-23
Publication date: 2019-01-25
Anticipated expiration: 2034-01-23
Also published as: CN103768749A

Abstract

The invention discloses a kind of sensitive adjustable anti-reset valves, including valve body, valve deck, it is characterized in that, valve shaft is equipped in the valve body, described valve shaft one end passes through sealing shroud and couples with the intracorporal valve plate of valve, the other end stretches out valve body and couples with balancing pole, and one end of the balancing pole is connected on valve shaft, and the other end is equipped with adjustable balance weight.The valve has many advantages, such as sensitive adjustable, hand-reset, structure are simple, safe and reliable, condition range is wide, medium is adaptable.

Description

Sensitive adjustable anti-reset valve

Technical field

The present invention relates to a kind of valves for fire protection sector, ensure to begin after deluge alarm valve is opened more particularly to one kind Eventually in the sensitive adjustable anti-reset valve opened for above-water method state.

Background technique

It is mentioned in existing patent ZL201220548161.0 and ZL201320209181.X a kind of for deluge alarm valve Matched anti-reset valve (device), when drench with rain valve events when, respectively by media drive piston component or diaphragm realization movement with it is close Envelope terminates water source and fills into deluge alarm valve control chamber, it is ensured that deluge alarm valve, which is in, opens fire extinguishing state.Both the above structure shape Formula is respectively present following defect, and piston type component water resistant dirt and impurity ability are weak；Diaphragm type structure there are ageing of rubber, intolerant to The problem of high and low temperature.And its common defect has two: one, two kinds of devices are being situated between by importing and exporting the difference in areas of component Matter pressure pushes lower realization movement and sealing, once assembling product is completed, difference in areas, can not be according to actual condition just at definite value Pressure and flow control valve action sensitivity, and reduce reliability；Second: realizing control piece by pressure medium is rebuild Reset, be not manually control opening and closing element reset, when deluge valve is in initial start if make control chamber pressure because of malfunction Power can not drop to the grade for making piston component or diaphragm full action in place and realizing sealing, i.e., pressure, which does not drop to, can oneself The grade of lock, then pressure water will continue through the device and enter deluge valve control chamber, and deluge valve is made to be restored to closed state, It can lead to the anhydrous major safety risks sprayed of downstream spraying fire-extinguishing system.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of hand-reset, it is sensitive it is adjustable, condition range is wide, medium is suitable It should be able to power be strong, structure is simple, reliable, the sensitive adjustable anti-reset valve without the fatiguabilities such as spring, rubber piece safety easy to aging.

In order to solve the above-mentioned technical problem, the technical scheme is that

Sensitive adjustable anti-reset valve, including valve body 1, valve deck 2, it is characterised in that: valve shaft 3, institute are equipped in the valve body It states 3 one end of valve shaft to couple across sealing shroud 5 with the valve plate 10 in valve body 1, the other end stretches out valve body 1 and couples with balancing pole 6, described One end of balancing pole 6 is connected on valve shaft 3, and the other end is equipped with adjustable balance weight 7.

Further, sealing ring 9 is equipped between the valve shaft 3 and sealing shroud 5.

Further, the balancing pole 6 is to be threadedly coupled with balance weight 7, and the balance weight 7 can be adjusted by the threaded connection Save the position on balancing pole 6.

Further, gag lever post 8 is additionally provided on the valve body 1, the gag lever post 8 is to be fastened on valve body 1 by sealing shroud 5 On.

Further, the aperture of valve plate 10 is A, and the range of A is 0 °~90 °, after angle A setting, can be limited by gag lever post 8 Determine the included angle B of balancing pole 6 Yu vertical direction, the range of B is 0 °~45 °, when valve be in closed positions, the balancing pole 6 and Vertical direction angle is set as C, and the range of C is 0 °~90 °.

The sensitive adjustable anti-operation explanation for resetting valve:

When anti-reset valve, which is erect, to be installed: under original state, valve plate is kept it turning under self weight and balance weight gravity State keeps maintaining pressure to deluge valve control chamber moisturizing；When movement, deluge alarm valve control cavity pressure decline, valve plate into Water pressure moves under pushing to water outlet side, and " bathtub latch up effect " is utilized to be automatically closed, and in water inlet end pressure and balance weight weight Power effect is lower to be realized sealing and is maintained in its closed position, and is terminated water source and is filled into deluge alarm valve control chamber, maintains opening for deluge valve It opens.After the completion of only putting out a fire, by manually stirring balancing pole to open position, anti-reset valve is just again turned on, and connects rain Valve control chamber pressure source is drenched, pressure water enters control chamber and realizes the closing of deluge valve and return to initial dormant state.

Anti- reset valve can be also horizontally mounted, and when original state, valve plate is by balancing pole in the lower realization of " regulations and parameters principle " effect It opens；When movement, valve plate is moved in the case where self weight and intake pressure are pushed to water outlet side, and " bathtub latch up effect " is utilized to close automatically It closes, and realizes sealing under water inlet end pressure and balance weight gravity and be maintained in its closed position, remaining situation is erected with above-mentioned Vertical installation is consistent, no longer burdensome.

Anti- reset valve by adopting the above technical scheme can set different valve plate apertures according to the sensitivity requirement of system The range of A, A are 0 ° -90 °, and angle is smaller, and valve sensitivity is higher；After angle A setting, balancing pole can be limited by gag lever post With the included angle B of vertical direction, the range of B is 0 ° -45 °, and the gravity using balance weight on balancing pole is maintained at out valve plate Open state；After valve plate is closed, the range of the angle C, C of balancing pole and vertical direction are 0 ° -90 °, utilize balance weight on balancing pole Gravity make valve plate keep in off position.

In conclusion sensitive adjustable anti-reset valve by adopting the above technical scheme, is realized by " bathtub latch up effect " Valve is automatically closed, and stablizes the open and close state of valve, sensitive adjustable, hand-reset, structure letter by lever principle It is single, safe and reliable, there is many advantages, such as condition range is wide, medium is adaptable.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is when erectting installation, and valve is in the open position schematic diagram.

Fig. 3 is valve schematic diagram in the closed position when erectting installation.

Fig. 4 is when being horizontally mounted, and valve is in the open position schematic diagram.

Fig. 5 is valve schematic diagram in the closed position when being horizontally mounted.

Specific embodiment

Referring to Fig. 1, Fig. 2, sensitive adjustable anti-reset valve includes valve body 1, valve deck 2, valve plate 10, and sealing shroud 5 is by gag lever post 8 It is fastened on valve body 1, one end of valve shaft 3 passes through sealing shroud 5 and couples with the valve plate 10 in valve body 1, and the other end stretches out valve body 1 and puts down The bar 6 that weighs couples, and is fastened balancing 6 with valve shaft 3 by nut 4, and the shaft end milling of valve shaft 3 is convenient to fastening nut 4, the valve shaft Sealing ring 9 is equipped between 3 and sealing shroud 5, one end of balancing pole 6 is connected on valve shaft 3, and the other end is equipped with screw thread, and balance weight 7 can The position on balancing pole 6 is adjusted by the screw thread.

Valve is in the open position when referring to fig. 2, to erect installation, and the aperture of valve plate 10 is set as A, and the range of A is 0 °~ 90 °, after angle A setting, the included angle B of balancing pole 6 and vertical direction can be limited by gag lever post 8, the range of B is 0 °~45 °, is led to The gravity of overbalance block 7 makes valve plate 10 be maintained at open state.

Referring to Fig. 3, valve is in closed positions when to erect installation, and the balancing pole 6 is set as C, C with vertical direction angle Range be 0 °~90 °, by the gravity of balance weight 7 make valve plate 10 keep in off position.

Referring to fig. 4, Fig. 5, when valve is using being horizontally mounted, principle and movement are consistent when installing with setting, no longer tired It is superfluous.

Certainly, the present invention is not limited to the example above, it will be apparent to those skilled in the art that technical solution, Without departing from the spirit or scope of the present invention, the various modifications that the present invention makes are wanted with change in right of the invention Ask and its equivalent replacement in the range of, for example, limiting component be individually built up on valve body, directly set up between valve shaft and valve body it is close Seal, the present invention cover such modifications and changes.

Claims

1. sensitive adjustable anti-reset valve, including valve body, valve deck, it is characterised in that: be equipped with valve shaft, the valve shaft in the valve body One end passes through sealing shroud and couples with the intracorporal valve plate of valve, and the other end stretches out valve body and coupled by nut with balancing pole fastening, institute The one end for stating balancing pole is connected on valve shaft, the other end be equipped with adjustable balance weight, the water outlet of the valve body with drench with rain The connection of alarm valve control chamber；

Under original state, valve plate is kept it turned under self weight and balance weight gravity, keeps controlling to deluge alarm valve Chamber moisturizing maintains pressure；When movement, deluge alarm valve controls cavity pressure decline, and valve plate is transported under intake pressure promotion to water outlet side It moves and is automatically closed, and realize sealing under water inlet end pressure and balance weight gravity and be maintained in its closed position, terminate water Source fills into deluge alarm valve control chamber, maintains the unlatching of deluge alarm valve.

2. sensitive adjustable anti-reset valve according to claim 1, it is characterised in that: the valve shaft is equipped with sealing inner room Sealing ring.

3. sensitive adjustable anti-reset valve according to claim 1, it is characterised in that: the balancing pole is spiral shell with balance weight Line connection, the balance weight can adjust the position on balancing pole by the threaded connection.

4. sensitive adjustable anti-reset valve according to claim 1, it is characterised in that: be additionally provided with limit on the valve body Bar, the gag lever post are fastened on valve body by sealing shroud.

5. sensitive adjustable anti-reset valve according to any one of claims 1 to 4, it is characterised in that: the aperture of valve plate is The range of A, A are 0 °~90 °, and after angle A setting, the included angle B of balancing pole and vertical direction, the model of B can be limited by gag lever post Enclosing is 0 °~45 °, and when valve is in closed positions, the balancing pole and vertical direction angle are set as C, the range of C is 0 °~ 90°。