CN213982153U - Novel noise elimination axial-flow type stop check valve - Google Patents

Abstract

The utility model relates to a novel noise elimination axial-flow type stop check valve relates to bridge engineering construction technical field, and this novel noise elimination axial-flow type stop check valve includes: a valve body provided with a water inlet and a water outlet; the valve rod is partially arranged in the valve body and is in sliding connection with the valve body, and a power device is arranged at the part of the valve rod, which extends out of the valve body; the valve clack is abutted against the valve rod and is in sliding connection with the inner wall of the valve body, and a buffer device is arranged at the lower part of the valve clack; the plug screw is arranged between the valve clack and the inner wall of the valve body in the circumferential direction and is adjacent to the valve rod; a shock absorption pad is arranged on one side of the screw plug close to the valve clack; the anti-rotation clamp plate is used for limiting the rotation of the valve clack and/or the valve rod. The application has the advantages that: through setting up shock pad, buffer and preventing changeing splint, can effectively reduce the striking vibration of valve clack and valve body, also reduced the rotatory vibration noise of valve clack simultaneously, reduced the wearing and tearing of valve body and the loss of valve clack, improved the security.

Description

Novel noise elimination axial-flow type stop check valve

Technical Field

The utility model relates to a piping installation technical field, concretely relates to novel noise elimination axial-flow type stop check valve.

Background

The stop check valve is a multi-purpose valve having both functions of a stop valve and a check valve. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve saves installation costs and space on a pipeline where both the stop valve and the check valve need to be installed (e.g., the outlet end of a water pump), or in a place where the installation location is limited (e.g., a ship). The stop check valve is widely applied to petrochemical industry, electric power department, metallurgical department, chemical industry and urban construction department, and plays a very important role in conveying and adjusting chemical raw material products in China. However, the stop check valve adopted in the existing petrochemical and oil-gas pipelines cannot overcome the valve clack vibration and noise caused by large pressure difference, and certain hidden danger is brought to the safety of the valve.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the aim at of this application provides a novel noise elimination axial-flow type stop check valve to solve the problem that can't effectively suppress valve clack vibration and noise among the correlation technique.

To achieve the above objects, the present application provides a novel noise elimination axial flow type stop check valve, which includes:

a valve body provided with a water inlet and a water outlet;

the valve rod is partially arranged in the valve body and is in sliding connection with the valve body, and a power device is arranged at the part of the valve rod, which extends out of the valve body;

the valve clack is abutted against the valve rod and is in sliding connection with the inner wall of the valve body, the movement direction of the valve clack is limited by the inner wall of the valve body to be the same as the axial direction of the valve rod, and a buffer device is arranged at the lower part of the valve clack;

the plug screw is arranged between the valve clack and the inner wall of the valve body in the circumferential direction and is adjacent to the valve rod; a shock absorption pad is arranged on one side of the screw plug close to the valve clack;

and the anti-rotation clamping plate is sleeved on the valve clack and/or the valve rod and is used for limiting the rotation of the valve clack and/or the valve rod.

Preferably, the valve body is divided into a cap portion and a valve portion, the cap portion and the valve portion being detachably connected therebetween, the water outlet, the water inlet and the screw plug being provided in the valve portion, and the valve stem extending from the cap portion.

Preferably, the anti-rotation clamp plate is provided with an anti-rotation hole, the valve rod and/or the valve clack are provided with an anti-rotation groove, the anti-rotation hole and the anti-rotation groove are matched with each other, and the valve rod and/or the valve clack cannot rotate relative to the anti-rotation clamp plate due to the shapes of the anti-rotation hole and the anti-rotation groove.

Preferably, prevent changeing the splint and include two half splint that the symmetry set up, use the connector to connect between two half splint, two half splint splice back central authorities form prevent changeing the hole.

Preferably, one side of the anti-rotation clamping plate is provided with a sliding groove, the side wall of the valve body is provided with a sliding rail, and the sliding groove and the sliding rail are mutually in sliding fit.

Preferably, one side of the anti-rotation clamping plate is fixed on the valve body;

the length of the anti-rotation groove arranged on the valve rod along the movement direction of the valve rod is the same as the stroke length of the valve rod;

the length of the anti-rotation groove arranged on the valve clack along the movement direction of the valve clack is the same as the stroke length of the valve clack.

Preferably, the valve flap comprises:

the upper guide rod is connected with the screw plug in a sliding manner, and the top end of the upper guide rod is mutually abutted with the valve rod;

the valve part is arranged at the bottom end of the upper guide rod and is tightly matched with the valve body when the valve clack is pressed down so as to seal the water inlet;

the lower guide rod is arranged below the valve part and is in sliding connection with the valve body;

the upper guide rod, the lower guide rod, the valve part and the valve rod are coaxial.

Preferably, one of the end surface of the valve rod close to one end of the upper guide rod and the end surface of the upper guide rod close to one end of the valve rod is an arc spherical surface, and the other surface is a plane.

Preferably, the buffering device is a rebound spring sleeved on the lower guide rod.

Preferably, the power device comprises a valve rod nut arranged at the top of the valve body in a sliding mode and a hand wheel fixedly arranged outside the valve rod nut, and the top of the valve rod is matched with the valve rod nut through threads.

The beneficial effect that technical scheme that this application provided brought includes:

1. when the valve rod rises and is separated from the valve clack, the valve structure is changed into an axial flow check valve, and the vibration damping pad arranged at the contact part of the valve clack and the screw plug can eliminate the noise generated by the repeated medium impact and the screw plug impact of the valve clack, thereby playing a role in silencing; when the medium pressure becomes small and the medium reflux force causes the valve clack to be closed, the buffer device arranged at the lower part of the valve clack takes effect, so that the resistance of the buffer device is overcome when the valve clack is closed, the valve body is prevented from being directly impacted when the valve clack is closed, the impact noise is prevented, the loss degree of the valve clack is reduced, and the service life is prolonged.

2. An anti-rotation clamping plate is designed on the valve clack to prevent the valve clack from rotating at a high speed under medium impact, and noise generated by the high-speed rotation of the valve clack is eliminated. The anti-rotation clamping plate is simple in structure and convenient to mount and dismount.

3. When the valve clack is closed, the hand wheel is rotated clockwise, the valve rod moves downwards, the valve clack is compressed, the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat, sealing is guaranteed, and the stop valve is used. The valve has the advantages of an axial flow type check valve, has the function of cutting off the stop valve, and achieves the purpose of one valve for multiple purposes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed 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 only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of one embodiment of the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of fig. 1.

FIG. 4 is a schematic view of the valve flap of the embodiment shown in FIG. 1.

Reference numerals:

1. a valve body; 11. a water inlet; 12. a water outlet; 13. an anti-rotation splint; 131. an anti-rotation hole; 132. an anti-rotation slot; 133. a half splint; 134. a chute; 14. a cover portion; 15. a valve section; 16. A slide rail; 2. a valve stem; 21. a power plant; 211. a valve stem nut; 212. a hand wheel; 3. a valve flap; 31. a buffer device; 311. a rebound spring; 32. an upper guide rod; 33. a flap portion; 34. a lower guide rod; 4. a plug screw; 41. a shock-absorbing pad.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a novel noise elimination axial-flow type stop check valve, and the problem that valve clack vibration and noise can not be effectively suppressed can be solved.

As shown in fig. 1, the present embodiment is divided into a valve body 1, a valve rod 2, a valve flap 3, a plug screw 4 and an anti-rotation clamp plate 13, wherein the valve body 1 is provided with a water outlet 12 and a water inlet 11, in the present embodiment, the water inlet 11 is located at the bottom end of the valve body 1, and the water outlet 12 is located on the side wall of the valve body 1. The valve rod 2 is arranged on the valve body 1 and is connected with the valve body 1 in a sliding mode, and a power device 21 is arranged on the part, extending out of the valve body 1, of the valve rod 2 and used for driving the valve rod 2 to move up and down. The valve clack 3 is arranged in the valve body 1, the valve clack 3 and the valve rod 2 are mutually butted and connected, the valve clack 3 is controlled to descend by the valve rod 2, but the valve rod 2 and the valve clack 3 are not fixedly connected, so when the valve rod 2 is pressed down until the valve clack 3 and the valve body 1 are closed, the valve clack becomes a stop valve; when the valve rod 2 rises to be separated from the valve clack 3, the valve clack 3 is automatically opened and closed according to the flowing state of the medium, and the valve is changed into a check valve, so that the dual-purpose valve is realized.

As shown in fig. 2, the screw plug 4 is arranged in the valve body 1 and is in sliding connection with the valve clack 3, the screw plug 4 mainly plays a sealing role, a shock absorption pad 41 is arranged on one side, close to the valve clack 3, of the screw plug 4, and the shock absorption pad 41 is used for relieving the situation that the valve clack 3 repeatedly moves up and down to impact the screw plug 4 when the medium flow is unstable, so that the noise problem is effectively relieved. Prevent changeing splint 13 at 1 inside being provided with of valve body, prevent changeing splint 13 in this embodiment and be provided with two, a setting is on valve rod 2, and another setting is on valve clack 3, and the setting prevents changeing splint 13 on valve clack 3 and plays the primary function and prevents 3 rotatory vibrations of valve clack, reduces the noise of valve operation, has also prevented that 3 continuous rotations of valve clack from causing the wearing and tearing of 1 inner wall of valve clack 3 and valve body.

Preferably, the valve body 1 is divided into a cover part 14 and a valve part 15, the cover part 14 and the valve part 15 are detachably connected, the water outlet 12, the water inlet 11 and the screw plug 4 are arranged in the valve part 15, the valve rod 2 extends out from the cover part 14, and the cover part 14 and the valve part 15 are separated from each other to facilitate the maintenance and replacement of the valve.

As a preferred option of this embodiment, the anti-rotation clamp 13 is provided with an anti-rotation hole 131, the valve rod 2 and/or the valve flap 3 is provided with an anti-rotation slot 132, and the anti-rotation clamp 13 and the anti-rotation slot 132 are matched with each other, specifically, as shown in fig. 3, the anti-rotation hole 131 is a square hole, and the anti-rotation slot 132 is provided with a plane on the cylinder and matched with the anti-rotation hole 131, so that the valve rod 2 or the valve flap 3 cannot rotate relative to the anti-rotation clamp 13.

Further, the anti-rotation clamp plate 13 is divided into two symmetrical half clamp plates 133, as shown in fig. 3, the half clamp plates 133 are connected by a connector, in this embodiment, the connector is a screw and a nut, and the center of the two half clamp plates 133 forms the anti-rotation hole 131 after being spliced.

Further, one side at the splint 13 that prevents is provided with spout 134, is provided with slide rail 16 at valve body 1 corresponding position, and spout 134 slide rail 16 is mutually supported, and this is the fixed mode of splint 13 that prevents for splint 13 prevents can reciprocate along with valve rod 2 or valve clack 3, and is less to valve rod 2 or valve clack 3 structure influence.

Further, one side of the anti-rotation clamp plate 13 is fixedly arranged on the valve body 1, and the length of the anti-rotation groove 132 on the valve rod 2 along the moving direction thereof is the same as the stroke length of the valve rod 2; the length of the rotation preventing groove 132 on the valve flap 3 in the direction of movement thereof is the same as the stroke length of the valve flap 3. The anti-rotation clamping plate 13 is fixed in another mode, is firmer and is not easy to lose efficacy under the condition of larger flow.

As a preferred option of this embodiment, the valve flap 3 is divided into an upper guide rod 32, a flap portion 33 and a lower guide rod 34, as shown in fig. 4, and the upper guide rod 32, the lower guide rod 34, the valve flap 3 and the valve rod 2 are coaxial, and two guide rods, namely the upper guide rod 32 and the lower guide rod 34, are provided to ensure that the sealing surface of the valve flap 3 can be accurately attached to the sealing surface of the valve seat in the fully open and fully closed positions of the valve flap 3, thereby ensuring the tightness of the seal.

Furthermore, one of the end surface of the valve rod 2 close to one end of the upper guide rod 32 and the end surface of the upper guide rod 32 close to one end of the valve rod 2 is an arc spherical surface, and the other surface is a plane. One of the contact surfaces is designed to be a spherical surface, so that the contact between the valve rod 2 and the valve clack 3 is always point contact, and the axial force of the valve rod 2 is conveniently and uniformly transmitted to the valve clack 3.

Further, the buffering device is a rebound spring 311 sleeved on the lower guide rod 34, so that a buffering space is provided when the valve clack 3 impacts downwards, and the buffering device can also have more choices, such as elastic sheets, soft pads and other elastic devices, but the influence of the spring on medium flow is minimal, so that the spring is the preferred choice.

Preferably, the power device 21 includes a valve stem nut 211 slidably disposed on the top of the valve body 1 and a handwheel 212 fixedly disposed outside the valve stem nut 211, and the top of the valve stem 2 is more conveniently controlled by the threaded valve stem nut 211.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a novel noise elimination axial-flow type stop check valve which characterized in that, it includes:

a valve body (1) provided with a water inlet (11) and a water outlet (12);

the valve rod (2) is partially arranged in the valve body (1) and is in sliding connection with the valve body (1), and a power device (21) is arranged on the part, extending out of the valve body (1), of the valve rod (2);

the valve clack (3) is mutually abutted against the valve rod (2) and is in sliding connection with the inner wall of the valve body (1), the movement direction of the valve clack (3) is limited to be the same as the axial direction of the valve rod (2) by the inner wall of the valve body (1), and a buffer device is arranged at the lower part of the valve clack (3);

the plug screw (4) is arranged on the circumferential direction of the valve clack (3), is positioned between the valve clack (3) and the inner wall of the valve body (1), and is adjacent to the valve rod (2); a damping pad (41) is arranged on one side of the screw plug (4) close to the valve clack (3);

and the anti-rotation clamping plate (13) is sleeved on the valve clack (3) and/or the valve rod (2) and is used for limiting the rotation of the valve clack (3) and/or the valve rod (2).

2. The new muffled axial flow stop check valve of claim 1 wherein: the valve body (1) is divided into a cover portion (14) and a valve portion (15), the cover portion (14) and the valve portion (15) are detachably connected, the water outlet (12), the water inlet (11) and the screw plug (4) are arranged in the valve portion (15), and the valve rod (2) extends out of the cover portion (14).

3. The new muffled axial flow stop check valve of claim 1 wherein: the anti-rotation clamp plate (13) is provided with an anti-rotation hole (131), the valve rod (2) and/or the valve clack (3) are provided with an anti-rotation groove (132), the anti-rotation hole (131) and the anti-rotation groove (132) are matched with each other, and the valve rod (2) and/or the valve clack (3) cannot relatively rotate the anti-rotation clamp plate (13) due to the shapes of the anti-rotation hole (131) and the anti-rotation groove (132).

4. A new muffled axial flow stop check valve as set forth in claim 3 wherein: prevent changeing splint (13) and include half splint (133) that two symmetries set up, use the connector to connect between two half splint (133), two half splint (133) splice back central authorities form prevent changeing hole (131).

5. A new muffled axial flow stop check valve as set forth in claim 3 wherein: one side of the anti-rotation clamping plate (13) is provided with a sliding groove (134), the side wall of the valve body (1) is provided with a sliding rail (16), and the sliding groove (134) and the sliding rail (16) are mutually in sliding fit.

6. A new muffled axial flow stop check valve as set forth in claim 3 wherein: one side of the anti-rotation clamping plate (13) is fixed on the valve body (1);

the length of an anti-rotation groove (132) arranged on the valve rod (2) along the movement direction of the valve rod (2) is the same as the stroke length of the valve rod (2);

the length of the anti-rotation groove (132) arranged on the valve clack (3) along the movement direction of the valve clack (3) is the same as the stroke length of the valve clack (3).

7. The new muffled axial flow stop check valve of claim 1 wherein: the valve flap (3) comprises:

the upper guide rod (32) is connected with the screw plug (4) in a sliding manner, and the top end of the upper guide rod (32) is abutted against the valve rod (2);

a flap portion (33) provided at the bottom end of the upper guide rod (32) and closely fitted to the valve body (1) when the valve flap (3) is pressed down, for closing the water inlet (11);

a lower guide rod (34) which is arranged below the valve part (33) and is connected with the valve body (1) in a sliding way;

the upper guide rod (32), the lower guide rod (34), the valve part (33) and the valve rod (2) are coaxial.

8. The new muffled axial flow stop check valve of claim 6 wherein: one of the end surface of the valve rod (2) close to one end of the upper guide rod (32) and the end surface of the upper guide rod (32) close to one end of the valve rod (2) is an arc spherical surface, and the other surface is a plane.

9. The new muffled axial flow stop check valve of claim 6 wherein: the buffer device is a rebound spring (311) sleeved on the lower guide rod (34).

10. The new muffled axial flow stop check valve of claim 1 wherein: the power device (21) comprises a valve stem nut (211) arranged at the top of the valve body (1) in a sliding mode and a hand wheel (212) fixedly arranged outside the valve stem nut (211), and the top of the valve stem (2) is matched with the valve stem nut (211) through threads.

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