CN213575740U - Novel check valve for fire-fighting articles - Google Patents

Abstract

The utility model provides a novel fire-fighting product check valve, including valve body, valve clack, valve rod, support, uide bushing and cutting ferrule, the both ends of valve body are intake end and play water end respectively, the inside of uide bushing be provided with valve rod complex copper bush, be located to be provided with auxiliary spring between the uide bushing and the valve clack of play water end, the valve rod is provided with the sealing plug that subtracts heavy groove and shutoff and subtract heavy groove in its one end of going out the water end towards, be provided with special-shaped gasket between cutting ferrule and the intake end, special-shaped gasket includes straight ring portion, oblique ring portion and hook ring portion, hook ring portion and the barb groove cooperation of setting at the valve body inner wall, the valve clack is provided with a plurality of sphere archs on its surface towards play water end, be. This device utilizes copper bush, auxiliary spring and the design that subtracts the heavy groove to improve the reaction rate of valve rod, and this device's connection leakproofness is higher moreover, and anti degradation ability is stronger, and life is longer, and reasonable in design is fit for extensive the popularization.

Description

Novel check valve for fire-fighting articles

Technical Field

The utility model belongs to the technical field of the fire control valve equipment, especially, relate to a novel fire-fighting articles for use check valve.

Background

The fire valve is an important accessory for controlling industrial and building pipelines. The fire-fighting check valve is an automatic valve, and mainly has the functions of preventing medium from flowing backwards, preventing reverse rotation of pump and driving motor and discharging container medium. Check valves may also be used to provide make-up lines to auxiliary systems where the pressure may rise above the system pressure.

Currently, a commonly used fire check valve includes a valve body, a valve flap, a valve stem, a guide sleeve, and a bracket. The valve clack can make linear motion along the guide sleeves and the supports at the two ends of the valve body under the connection of the valve rod, so that the opening and closing of the check valve are realized. However, because the manufacturing precision of the valve rod, the guide ring and the bracket is low, and in addition, scale intermittently enters the valve body, the problem of corrosion is easy to occur, so that the guide resistance is large, and the instantaneity of the action of the check valve is influenced; moreover, the mounting precision of the bracket and the valve body is low, the adopted sealing ring has short service life, and the sealing property of the check valve is unstable; secondly, the backward flow water can carry a large amount of air when closing the valve clack, makes the valve clack appear the surface degradation in the one side towards the backward flow direction easily to influence check valve's performance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell check valve exists, provide a reasonable in design, simple structure, instant reaction fast, the better and longer novel fire articles for use check valve of life of leakproofness.

In order to achieve the above object, the technical solution adopted by the present invention is that, the present invention provides a novel check valve for fire-fighting equipment, comprising a valve body, wherein the valve body is internally provided with an arched valve flap, the valve flap is arranged on a valve rod, the two ends of the valve body are respectively a water inlet end and a water outlet end, the water inlet end and the water outlet end are respectively provided with a bracket, the center of the bracket is provided with a guide sleeve, the outer side of the bracket positioned at the water inlet end is provided with a cutting sleeve, the valve rod is movably arranged in the guide sleeve, the inside of the guide sleeve is provided with a copper bush matched with the valve rod, an auxiliary spring is arranged between the guide sleeve positioned at the water outlet end and the valve flap, the valve rod is provided with a lightening groove at one end thereof facing the water outlet end, the end of the lightening groove is provided with a sealing plug, a special-shaped gasket is arranged between the cutting sleeve and the, the top of straight ring portion is provided with the book ring portion of turning over towards the valve rod center, the one end of book ring portion is provided with the oblique ring portion that extends towards the valve body inner wall, the tip of oblique ring portion is provided with hook ring portion, hook ring portion and the barb groove cooperation of setting at the valve body inner wall, the valve clack is provided with a plurality of sphere archs on its surface towards the play water end, be provided with a plurality of protruding nails in the sphere arch.

Preferably, the top of the ring folding part is provided with an annular plate pad, the annular plate pad is evenly provided with a plurality of through holes, and the through holes are internally provided with screws for connecting the annular plate pad, the ring folding part and the clamping sleeve.

Preferably, the groove diameter of the weight-reducing groove is 2/3 of the diameter of the valve rod, and the length of the weight-reducing groove is at least 1/2 of the length of the valve rod.

Preferably, the valve rod is provided with a clamping shoulder for matching with the auxiliary spring.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the utility model provides a novel check valve for fire-fighting articles, which effectively improves the matching precision of a valve rod and a guide sleeve by adding a copper bush, and is beneficial to backwater to push the valve rod by adding the design of an auxiliary spring and a lightening groove, thereby effectively improving the automation capacity of opening and closing the device; the connection sealing performance of the valve body and the clamping sleeve is effectively improved by adding the special-shaped gasket; the spherical bulge and the convex nail are utilized to effectively relieve cavitation formed by backwater outside the valve clack, the anti-stripping capability is strong, and the service life is long. The device has reasonable design and simple structure, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a cross-sectional view of a novel check valve for fire-fighting equipment provided by an embodiment;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to an embodiment;

FIG. 3 is an enlarged schematic view of the structure B in FIG. 1 according to an exemplary embodiment;

in the above figures, 1, a valve body; 1a, a water inlet end; 1b, a water outlet end; 1c, barb grooves; 2. a valve flap; 21. spherical surface is convex; 22. a convex nail; 3. a valve stem; 31. a weight reduction groove; 32. clamping a shoulder; 4. a support; 5. a guide sleeve; 6. a card sleeve; 7. a copper bushing; 8. an auxiliary spring; 9. a sealing plug; 10. a special-shaped gasket; 101. a straight ring part; 102. a folded ring part; 103. an inclined ring part; 104. a hook loop portion; 11. an annular plate pad; 12. and (4) screws.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment, as shown in fig. 1, 2 and 3, the utility model provides a pair of novel fire-fighting product check valve, including valve body 1, the inside of valve body 1 is provided with arcuate valve clack 2, and valve clack 2 sets up on valve rod 3, and the both ends of valve body 1 are intake end 1a and play water end 1b respectively, and intake end 1a and play water end 1b are provided with a support 4 respectively, and the center of support 4 is provided with uide bushing 5, and the outside that is located intake end 1 a's support 4 is provided with cutting ferrule 6, and the activity of valve rod 3 sets up in uide bushing 5. Wherein, valve body 1, support 4, uide bushing 5 and cutting ferrule 6 are prior art, and this embodiment need not be repeated here. The utility model discloses a key is to valve clack 2, valve rod 3 and uide bushing 5, cutting ferrule 6 and the cooperation structure of intaking end 1a provide the improvement to improve the instant reaction rate of this device in the fire control pipeline.

Specifically, the utility model discloses the inside of uide bushing 5 is provided with and valve rod complex copper bush 7, be located and be provided with auxiliary spring 8 between the uide bushing of play water end 1b and the valve clack, valve rod 3 is provided with at its one end towards a water end and subtracts heavy groove 31, the tip that subtracts heavy groove 31 is provided with sealing plug 9, cutting ferrule 6 and the end of intaking are provided with special-shaped gasket 10 between 1a, special-shaped gasket 10 includes the straight ring portion 101 with the inner wall of the end of intaking and the outer wall complex of cutting ferrule, the top of straight ring portion 101 is provided with the book ring portion 102 of rolling over towards the valve rod center, the one end of book ring portion 102 is provided with the inclined ring portion 103 of extending towards the valve body inner wall, the tip of inclined ring portion 103 is provided with hook ring portion 104, hook ring portion 104 cooperates with the barb groove 1c that sets up at the valve body inner wall, valve clack 2 is provided with a plurality of spherical surface archs 21 on. The copper bush 7 is arranged between the guide sleeve 5 and the valve rod 3 after high-precision machining, so that the matching precision of the guide sleeve and the valve rod can be effectively improved, the guide precision is high, and the action resistance is small; meanwhile, the auxiliary spring 8 can provide power for closing the check valve for the valve rod 3 in the water return process, and the gravity center of the valve rod deviates towards the water inlet end due to the design of the weight reduction groove 31, so that the instant reaction rate of the valve clack 2 is effectively improved, and the return water is prevented from flowing back through the valve clack 2; one end of the auxiliary spring 8, which faces the valve clack, adopts a free end (not fixedly connected with the valve rod), so that the valve clack 2 can be completely separated from the auxiliary spring 8 when the check valve is closed, and the stability of the valve clack 2 in a state of closing a water inlet end is improved; moreover, the valve body 1 can push the valve clack 2 to be in contact connection with the auxiliary spring 8 under the normal water inlet condition, so that the valve clack 2 and the water outlet end 1b are in a soft connection state, and the valve rod 3 and the guide sleeve 5 can conveniently generate effective relative movement under the water return action.

Furthermore, the utility model effectively improves the matching precision of the water inlet end 1a and the cutting sleeve 6 by using the special-shaped gasket 10 which is processed with high precision and has certain elasticity, so that the water inlet end 1a and the cutting sleeve 6 have better connection sealing performance, the flexible sealing between the folded ring part 102 and the valve clack 2 can be realized, and the retention of scale at the end part of the cutting sleeve 6 can be reduced; the special-shaped gasket 10 has the advantages of strong fixing capacity on the valve body, high connection reliability, good assembly performance and strong practicability. Furthermore, by designing the spherical protrusions 21 and the convex nails 22 on the valve clack 2, cavitation formed by backwater on the outer side of the valve clack 2 can be effectively relieved, the anti-ablation capacity is strong, and the service life is long.

In order to improve the stability of dysmorphism gasket, the utility model discloses top at book ring portion 102 is provided with annular plate pad 11, evenly be provided with a plurality of through-hole on the annular plate pad 11, be provided with in the through-hole and connect annular plate pad 11, roll over the screw 12 of ring portion 102 and cutting ferrule 6, accurate fixed dysmorphism gasket 10 comes through annular gasket 11, and the annular gasket 11 that uses in this device is thinner moreover, not only can guarantee that dysmorphism gasket 10 has reasonable soft sealing function like this, still make dysmorphism gasket 10 obtain higher connection stability simultaneously, and the design benefit is strong in practicability.

In order to improve the automatic performance of this device, the utility model provides a subtract the groove footpath of groove 31 for 2/3 of valve rod 3 diameter, subtract the length of groove 31 and be 1/2 of valve rod length at least, effectively promote the barycenter of valve rod 3 towards the end skew of intaking, reduce the resistance that the return water promoted valve clack 2 to make valve clack 2 can block the return water fast and hold 1a through intaking.

In order to improve the reaction efficiency of this device, the utility model discloses be provided with on valve rod 3 be used for with auxiliary spring complex card shoulder 32, card shoulder 32 is connected with the 8 contacts of auxiliary spring, and the stroke that the check valve was opened can be shortened in such structure cooperation, but also can improve valve rod 3's action stability.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (4)

1. A novel check valve for fire-fighting articles comprises a valve body, wherein an arched valve clack is arranged inside the valve body, the valve clack is arranged on a valve rod, a water inlet end and a water outlet end are respectively arranged at two ends of the valve body, a support is respectively arranged at the water inlet end and the water outlet end, a guide sleeve is arranged at the center of the support, a clamping sleeve is arranged at the outer side of the support positioned at the water inlet end, and the valve rod is movably arranged in the guide sleeve. The top of straight ring portion is provided with the book ring portion of turning over towards the valve rod center, the one end of book ring portion is provided with the oblique ring portion that extends towards the valve body inner wall, the tip of oblique ring portion is provided with hook ring portion, hook ring portion and the barb groove cooperation of setting at the valve body inner wall, the valve clack is provided with a plurality of sphere archs on its surface towards the play water end, be provided with a plurality of protruding nails in the sphere arch.

2. The novel check valve for fire-fighting equipment as claimed in claim 1, wherein an annular plate pad is disposed on the top of the ring-folded portion, a plurality of through holes are uniformly formed in the annular plate pad, and screws for connecting the annular plate pad, the ring-folded portion and the clamping sleeve are disposed in the through holes.

3. The new fire protection article check valve of claim 2, wherein said weight-reducing slot has a slot diameter of 2/3 mm of the valve stem, and a length of at least 1/2 mm of the valve stem.

4. A novel fire control article check valve as defined in claim 3, wherein said valve stem is provided with a shoulder for engaging with an auxiliary spring.

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