CN210600421U - Water hammer preventing valve - Google Patents

Abstract

The utility model provides a water hammer prevention valve, including valve gap, valve body and water hammer absorption ware, the valve gap passes through bolted connection to the valve body top, valve body bottom fixed connection receives the ware top to the water hammer, and the water hammer absorption ware includes leading truck, lower leading truck, guide post, valve clack and No. two valve clacks, and the leading truck is gone up in ware inner wall upper portion fixed mounting is received to the water hammer, and the leading truck is connected with lower leading truck through being used for the guide post under the fixed mounting of lower part for subducting a valve clack, No. two valve clacks of water hammer impulsive force and cup joint at the guide post outside respectively, and relative guide post slides. Water hammer prevention valve be used for alleviating the impact of water hammer to valve inside, extension valve life.

Description

Water hammer preventing valve

Technical Field

The utility model belongs to the valve field especially relates to water hammer prevention valve.

Background

Water hammer is also called water hammer. The liquid flowing in the pressure pipe has a sudden change in flow rate for some reason (sudden closing of a valve, sudden stopping of a water pump, sudden opening and closing of a guide vane, etc.), and an alternating change in which the pressure is suddenly increased or decreased due to the inertia of the liquid, that is, a pressure wave, which is called a water hammer. Because the inner wall of the pipeline is smooth, water flows freely. When the opened valve is suddenly closed or the water pump is suddenly stopped, the follow-up water flow continues to flow under the action of inertia, after the flow is stopped, the water in the pipeline reversely flows back, at the moment, great impact force and water pressure can be generated on the water pump, the valve and the pipeline, and a destructive effect is generated. The water hammer effect is extremely destructive: too high a pressure will cause the pipe to break, whereas too low a pressure will cause the pipe to collapse and may also damage valves and pumps etc.

Disclosure of Invention

In view of this, the utility model aims at providing a water hammer prevention valve to alleviate the impact of water hammer to the valve inside, extension valve life.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the water hammer preventing valve comprises a valve cover, a valve body and a water hammer catcher, wherein the valve cover is connected to the top of the valve body through a bolt, the bottom of the valve body is fixedly connected to the top of the water hammer catcher,

the water hammer absorption device comprises an upper guide frame, a lower guide frame, a guide post, a valve clack and a valve clack, wherein the upper guide frame is fixedly arranged on the upper part of the inner wall of the water hammer absorption device, the lower guide frame is fixedly arranged on the lower part of the inner wall of the water hammer absorption device, the upper guide frame is connected with the lower guide frame through the guide post, and the valve clack which are used for reducing the impact force of the water hammer are respectively sleeved outside the guide post and slide relative to the guide post.

Furthermore, the first valve clack comprises an upper valve clack and a lower valve clack, the central part of the upper valve clack is fixedly connected with the central part of the lower valve clack, the cross sections of the upper valve clack and the lower valve clack are of symmetrical arc structures, the whole cross section of the upper valve clack and the lower valve clack is of an X-shaped structure, and a plurality of first counter-punching holes are formed in the first valve clack.

Furthermore, the radian of the upper valve clack and the radian of the lower valve clack are both 120 degrees, the first opposite punching holes on two sides of the central line of the first valve clack are mutually symmetrical, and the central lines of the first opposite punching holes are respectively vertical to the tangent lines of the upper valve clack and the lower valve clack.

Furthermore, a plurality of first offset holes on the first valve clack are close to the center line from two sides, and the included angle between the first offset holes and the horizontal line is gradually increased.

Furthermore, sealing rubber pads are arranged at two ends of the upper valve clack and the lower valve clack.

Furthermore, No. two valve clacks cross sections are the U type structure, be equipped with No. two on No. two valve clacks and to punching a hole.

Furthermore, the second opposite punching holes on two sides of the center line of the second valve clack are mutually symmetrical.

Furthermore, the central lines of the second pairs of punched holes are perpendicular to the tangential direction of the second valve clack.

Furthermore, a plurality of second pairs of punched holes on the second valve clack are close to the center line of the second valve clack from two sides, and the included angle between the second pairs of punched holes and a horizontal line is gradually increased.

Furthermore, sealing rubber pads are arranged at two ends of the second valve clack, and a buffering sponge pad is arranged at the bottom of the second valve clack.

Compared with the prior art, water hammer prevention valve have following advantage:

(1) water hammer prevention valve, use the arc valve clack can weaken the impact of water hammer to the valve clack.

(2) Water hammer prevention valve, utilize the arc valve clack to carry out preliminary weakening to the water hammer, then use the through-hole on the valve clack to carry out the secondary to the water hammer and weaken, extension valve life.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a valve flap of a water hammer prevention valve according to an embodiment of the present invention;

fig. 2 is a schematic view of a second valve flap of the water hammer prevention valve according to the embodiment of the present invention.

Description of reference numerals:

1-valve cover; 2-a valve body; 3-a water hammer catcher; 31-upper guide frame; 32-lower guide frame; 33-a guide post; 34-flap number one; 341-one hole punching; 35-second valve flap; 351-two pairs of punched holes.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The water hammer prevention valve, as shown in fig. 1 and 2, comprises a valve cover 1, a valve body 2 and a water hammer catcher 3, wherein the valve cover 1 is connected to the top of the valve body 2 through a bolt, the bottom of the valve body 2 is fixedly connected to the top of the water hammer catcher 3,

the water hammer absorption device 3 comprises an upper guide frame 31, a lower guide frame 32, a guide post 33, a first valve clack 34 and a second valve clack 35, the upper guide frame 31 is fixedly installed on the upper portion of the inner wall of the water hammer absorption device 3, the lower guide frame 32 is fixedly installed on the lower portion, the upper guide frame 31 is connected with the lower guide frame 32 through the guide post 33, the first valve clack 34 and the second valve clack 35 used for reducing the impact force of the water hammer are respectively sleeved outside the guide post 33 and slide relative to the guide post 33.

The first valve clack 34 comprises an upper valve clack and a lower valve clack, the central part of the upper valve clack is fixedly connected with the central part of the lower valve clack, the cross sections of the upper valve clack and the lower valve clack are of symmetrical arc structures, the impact force of a part of a water hammer can be offset by the aid of the arc structures, the whole cross section is of an X-shaped structure, and a plurality of first counter-impact holes 341 are formed in the first valve clack 34.

The radian of the upper valve clack and the lower valve clack is 120 degrees, the first hedging holes 341 on two sides of the central line of the first valve clack 34 are symmetrical, the symmetrical design can realize the hedging effect of a water body passing through the first hedging holes 341, the weakening of a water hammer is realized under the hedging effect, and the central lines of a plurality of the hedging holes 341 are respectively vertical to the tangent lines of the upper valve clack and the lower valve clack.

The first punched holes 341 on the first valve flap 34 are close to the center line from two sides, and the included angle between the first punched holes 341 and the horizontal line is gradually increased.

Go up the valve clack and all be equipped with sealing rubber pad with the both ends of valve clack down, guarantee the leakproofness, play the effect of buffering simultaneously, prevent that valve clack 34 from striking and causing the damage to the inner wall of water hammer storage ware 3.

The cross section of the second valve clack 35 is of a U-shaped structure, and a plurality of second opposite punching holes 351 are formed in the second valve clack 35.

The second hedging holes 351 on the two sides of the central line of the second valve clack 35 are symmetrical to each other, and the symmetrical design can realize the hedging effect of the water body passing through the second hedging holes 351, so that the water hammer is weakened under the hedging effect.

The central lines of the plurality of second pair of punched holes 351 are perpendicular to the tangential direction of the second valve flap 35.

The second punched holes 351 in the second valve clack 35 are close to the center line of the second valve clack 35 from two sides, and the included angle between the second punched holes 351 and the horizontal line is gradually increased.

No. two valve clack 35 both ends are equipped with sealing rubber pad, and No. two valve clack 35 bottoms are equipped with the buffering foam-rubber cushion, strike leading truck 32 down when preventing No. two valve clack 35 whereabouts.

A valve clack 34, the theory of operation, water in the pipeline forms the water hammer through valve clack 34, the impulsive force of water lets valve clack 34 rebound on guide post 33, it is sealed with 2 inner wall contact formation of valve body to go up the valve clack, the water hammer striking weakens for the first time on the lower valve clack of arc structure, water passes through from the gap of a counterpunch hole 341 and both sides on the valve clack down, pass through a counterpunch hole 341 on last valve clack again, a counterpunch hole 341 of symmetry of each other carries out the correlation of water, the realization is carried out the secondary and is weakened to the water hammer.

No. two valve clacks 35, theory of operation, water in the pipeline forms the water hammer and strikes No. two valve clacks 35, and the impulsive force of water lets No. two valve clacks 35 rebound, and the water hammer striking is on No. two valve clacks 35 of U type structure, and No. two valve clacks 35 of U type structure can weaken the water hammer for the first time, and the water hammer is through No. two counterpulsation holes 351 formation correlation's rivers of symmetry each other on No. two valve clacks 35, plays the secondary effect of weakening to the water hammer.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Water hammer prevention valve, its characterized in that: comprises a valve cover, a valve body and a water hammer catcher, wherein the valve cover is connected to the top of the valve body through a bolt, the bottom of the valve body is fixedly connected to the top of the water hammer catcher,

the water hammer is inhaled and is received the ware and include the leading truck, lower leading truck, the guide post, valve clack and No. two valve clacks, the leading truck is gone up to water hammer absorption ware inner wall upper portion fixed mounting, the leading truck under the fixed mounting of lower part, it is connected with lower leading truck through being used for the guide post to go up the leading truck, a valve clack for subducing water hammer impulsive force, No. two valve clacks cup joint respectively in the guide post outside, and relative guide post slides, be equipped with a plurality of pairs of punching a hole on the valve clack, be equipped with a plurality of pairs of punching a hole on No. two valve clacks.

2. The water hammer prevention valve according to claim 1, wherein: the first valve clack comprises an upper valve clack and a lower valve clack, the central part of the upper valve clack is fixedly connected with the central part of the lower valve clack, the cross sections of the upper valve clack and the lower valve clack are of symmetrical arc structures, and the whole cross section is of an X-shaped structure.

3. The water hammer prevention valve according to claim 2, wherein: the radian of the upper valve clack and the radian of the lower valve clack are both 120 degrees, the first opposite punching holes on two sides of the central line of the first valve clack are mutually symmetrical, and the central lines of the first opposite punching holes are respectively vertical to the tangent lines of the upper valve clack and the lower valve clack.

4. The water hammer prevention valve according to claim 2, wherein: a plurality of first offset holes on the first valve clack are close to the center line from two sides, and the included angle between the first offset holes and the horizontal line is gradually increased.

5. The water hammer prevention valve according to claim 2, wherein: and sealing rubber pads are arranged at the two ends of the upper valve clack and the lower valve clack.

6. The water hammer prevention valve according to claim 1, wherein: the cross section of the second valve clack is of a U-shaped structure.

7. The water hammer prevention valve according to claim 6, wherein: and the second opposite punching holes on two sides of the central line of the second valve clack are mutually symmetrical.

8. The water hammer prevention valve according to claim 6, wherein: the central lines of the second pair of punched holes are perpendicular to the tangential direction of the second valve clack.

9. The water hammer prevention valve according to claim 6, wherein: a plurality of second pairs of punched holes on the second valve clack are close to the center line of the second valve clack from two sides, and the included angle between the second pairs of punched holes and a horizontal line is gradually increased.

10. The water hammer prevention valve according to claim 6, wherein: sealing rubber pads are arranged at two ends of the second valve clack, and a buffering sponge pad is arranged at the bottom of the second valve clack.

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