CN221348126U

CN221348126U - Mute type water pump control valve

Info

Publication number: CN221348126U
Application number: CN202323461079.1U
Authority: CN
Inventors: 宋正义; 欧阳建新; 李政宏
Original assignee: Shanghai Guanlong Valve Automation Co ltd
Current assignee: Shanghai Guanlong Valve Automation Co ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-07-16
Anticipated expiration: 2033-12-19

Abstract

The utility model relates to a mute water pump control valve, which comprises a valve body, a fluid guide body, a valve seat, a hydraulic cylinder assembly, a valve clack assembly, a communicating pipe assembly and a control small valve piping assembly, wherein the fluid guide body, the valve seat, the hydraulic cylinder assembly and the valve clack assembly are arranged in the valve body; the hydraulic cylinder assembly is positioned in the guide body and is connected with the valve clack assembly to form a left water cylinder cavity and a right water cylinder cavity which are mutually changed; the communicating pipe assembly is respectively connected with the left cavity of the water cylinder and the inlet end of the valve body, and the control small valve tubing assembly is respectively communicated with the right cavity of the water cylinder and the outlet end of the valve body and is communicated with the atmosphere. Compared with the prior art, the utility model has the advantages that the low flow resistance streamline inner cavity can be closed very fast when the pump is stopped, and the mute effect of the anhydrous hammer is excellent; the failure rate is low; long service life and the like.

Description

Mute type water pump control valve

Technical Field

The utility model relates to the technical field of valves, in particular to a mute water pump control valve.

Background

The outlet end of the water pump in the centrifugal water pump water supply system is provided with a so-called water pump control valve or valve group for controlling the water pump to be started and stopped. The valve or the valve group has the function of being slowly opened when the water pump is started to a certain lift, so that overload 'tripping' caused by too high current rise value at the initial stage of motor starting is prevented; and before stopping the pump, the pump is slowly closed and then stopped, or the pump is stopped, and simultaneously, the pump control valve is firstly quickly closed and then slowly closed to control the occurrence of the water hammer. The valve group on the market is used for controlling the water pump to be a check valve and an electric butterfly valve (the electric butterfly valve is used for controlling the water pump to normally close the valve to start and stop, and the check valve is used for stopping when an emergency power failure occurs). The water pump control valve is commonly used in the market at present and comprises a hydraulic control check butterfly valve, a multifunctional water pump control valve (a diaphragm double-cavity type), a pipe force valve (a large valve plate type and a small valve plate type) and the like, and some of the valves are check valves with high installation and use cost such as a valve group type and an electric butterfly valve; some faults are high, such as a hydraulic control butterfly valve; some running hydraulic losses are large like a pipe force valve; and the capability of eliminating water hammer is weak, such as a multifunctional water pump control valve.

The utility model discloses a tubular force valve with the publication number of CN201844031U, which comprises a valve body, wherein the valve body comprises a valve shaft, a large valve plate, a drain hole, a small valve plate, a control cavity and a control rod, the valve is in a swing type structure, and the opening degree of the valve plate is determined by the weight and the flow speed of the valve plate and the friction force of the control rod. Once the valve is opened to a certain degree, the pressure difference between the upper part and the lower part of the control cavity is small, and the friction force of the control rod cannot be overcome, so that the valve is difficult to be fully opened, and the hydraulic loss is relatively large. In addition, after the main valve plate is closed, the pressure difference between the upper part and the lower part of the control cavity is large, the diaphragm bears great tension when the small valve plate is in the slow closing initial stage, the diaphragm is easy to damage, and the quick closing time of the first section of the swing valve clack is relatively large (about 1 second), so that the tendency of backflow and water hammer is relatively large.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide a mute water pump control valve, which has the advantages of improving mute effect, reducing power loss and reducing failure rate.

The aim of the utility model can be achieved by the following technical scheme:

The mute water pump control valve comprises a valve body, a fluid guide body, a valve seat, a water pressure cylinder assembly, a valve clack assembly, a communicating pipe assembly and a control small valve tubing assembly, wherein the fluid guide body, the valve seat, the water pressure cylinder assembly and the valve clack assembly are arranged in the valve body; the hydraulic cylinder assembly is positioned in the guide body and is connected with the valve clack assembly to form a left water cylinder cavity and a right water cylinder cavity which are mutually changed;

The communicating pipe assembly is respectively connected with the left cavity of the water cylinder and the inlet end of the valve body, and the control small valve tubing assembly is respectively communicated with the right cavity of the water cylinder and the outlet end of the valve body and is communicated with the atmosphere.

Further, the control small valve tubing assembly comprises a normally open electromagnetic valve, a one-way valve, a normally closed electromagnetic valve, a needle valve and a tubing assembly, wherein the inlet end of the normally open electromagnetic valve is connected with the outlet end of the valve body through the tubing assembly, and the outlet end of the normally open electromagnetic valve is connected with the inlet end of the one-way valve; the inlet end of the normally-closed electromagnetic valve is connected with the outlet end of the one-way valve and the right cavity of the water cylinder through a tee joint respectively; the inlet end of the needle valve is connected with the outlet end of the normally closed electromagnetic valve, and the outlet end of the needle valve is communicated with the atmosphere.

Further, a self-cleaning filter screen is arranged at the outlet of the inlet end of the normally open electromagnetic valve, which is connected with the outlet end of the valve body through a piping component.

Further, the hydraulic cylinder assembly comprises an annular cylinder body, an annular piston and a plurality of ejector rods, the annular cylinder body is matched with the hollow structure of the guide body, the annular piston is installed inside the annular cylinder body, each ejector rod penetrates through the annular cylinder body, one end of each ejector rod is connected with the valve clack assembly, the other end of each ejector rod is connected with the annular piston, and the annular piston divides the annular cylinder body into a left cavity of the water cylinder and a right cavity of the water cylinder.

Further, the valve clack assembly comprises a valve clack and a spring, the valve clack is of an umbrella-shaped structure, the front part of the valve clack is of a disc shape, one side of the front part of the valve clack is matched with the valve seat, the other side of the front part of the valve clack corresponds to the ejector rod in position, the tail part of the valve clack is of a shaft rod-shaped structure and is positioned in the middle of the annular cylinder body, and the spring is positioned between the tail part of the valve clack and the annular cylinder body.

Further, the valve body is of a cylindrical streamline structure and is a central axis symmetrical rotating body; the inlet end and the outlet end of the valve body are flanges, and the flange surface of the outlet end of the valve body is provided with a hole in interference fit with the flow guide body.

Further, the inlet end of the valve body is provided with a valve seat matching hole, and the valve seat is arranged in the valve seat matching hole.

Further, the valve seat is an annular body, the sealing surface of the valve seat is conical, and the sealing surface of the valve seat is matched with the conical sealing surface of the valve clack assembly.

Further, the guide body is of a shell-type streamline structure, an annular tail portion in interference fit with the outlet end of the valve body is arranged at the tail portion of the guide body, and the hollow structure of the guide body is in tight fit with the hydraulic cylinder assembly.

Further, the communicating pipe assembly comprises a pipeline assembly, two ends of the pipeline assembly are respectively connected with the left cavity of the water cylinder and the inlet end of the valve body, and a self-cleaning filter screen is arranged at the outlet of the pipeline assembly connected with the inlet end of the valve body.

Compared with the prior art, the utility model has the following advantages:

The utility model sets the control small valve tubing component, through setting the normally open electromagnetic valve, the one-way valve, the normally closed electromagnetic valve and the needle valve leading to the atmosphere, and the normally open electromagnetic valve and the normally closed electromagnetic valve can keep synchronous with the water pump power supply, when the water pump is started, the annular piston can be pushed slowly to realize the opening action, when the pump is stopped, the valve clack component can be pushed by the aid of the spring to conduct the rapid closing action along with the change of the pressure difference before and after the pump is stopped, and the silencing effect is good, and the failure rate is low.

Drawings

Fig. 1 is a schematic diagram of a fully opened state of a mute water pump control valve according to an embodiment of the present utility model;

Fig. 2 is a schematic diagram of a pump stopping transient state of a mute water pump control valve according to an embodiment of the present utility model;

Fig. 3 is a schematic diagram of a state before opening a mute water pump control valve according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Example 1

As shown in fig. 1, the present embodiment provides a mute water pump control valve, which comprises a valve body 1, a fluid director 2, a valve seat 3, a hydraulic cylinder assembly 4, a valve clack assembly 5, a communicating pipe assembly 6 and a control small valve piping assembly 7 which are installed in the valve body 1, wherein the valve seat 3 is connected to the inlet end of the valve body 1 and is provided with a sealing surface matched with the valve clack assembly 5, one end of the fluid director 2 is matched with the valve body 1, and the other end is of a hollow structure and is connected with the valve clack assembly 5; the hydraulic cylinder assembly 4 is positioned in the current carrier 2 and is connected with the valve clack assembly 5 to form a left water cylinder cavity and a right water cylinder cavity which are mutually changed;

The communicating pipe assembly 6 is respectively connected with the left cavity of the water cylinder and the inlet end of the valve body 1, and the control small valve tubing assembly 7 is respectively communicated with the right cavity of the water cylinder and the outlet end of the valve body 1 and is communicated with the atmosphere.

Specifically, the valve body 1 is of a cylindrical streamline structure and is a central axis symmetrical rotary body; the inlet end and the outlet end of the valve body 1 are standard flanges, and the flange surface of the outlet end of the valve body 1 is provided with a hole in interference fit with the flow guide body 2.

Optionally, the valve body 1 is provided with a valve seat matching hole near the inlet end, and the valve seat 3 is installed in the valve seat matching hole, or the valve seat matching hole is not required, and an integrated valve seat is adopted.

The guide body 2 is of a shell-type streamline structure, the tail part of the guide body 2 is provided with an annular tail part in interference fit with the outlet end of the valve body 1, and the hollow structure of the guide body 2 is in tight fit with the hydraulic cylinder assembly 4.

The valve seat 3 is an annular body, the excircle of the valve seat is in interference fit with a hole at the inlet end of the valve body 1, and if the valve body is made of stainless materials, the valve seat is directly processed on the valve body 1; the sealing surface of the valve seat 3 is conical, and the valve is attached to the conical sealing surface of the valve clack 4 in the closing state to play a sealing role

The hydraulic cylinder assembly 4 comprises an annular cylinder body 4-1, an annular piston 4-2 and a plurality of ejector rods 4-3, the annular cylinder body 4-1 is matched with the hollow structure of the fluid director 2, the annular piston 4-2 is arranged in the annular cylinder body 4-1 and can reciprocate, each ejector rod 4-3 penetrates through the annular cylinder body 4-1, one end of each ejector rod is connected with the valve clack assembly 5, the other end of each ejector rod is connected with the annular piston 4-2, and the annular piston 4-2 divides the annular cylinder body 4-1 into a left cavity and a right cavity of the water cylinder. The middle of the annular cylinder body 4-1 is provided with a matching hole with the valve clack 5.

The valve clack assembly 5 comprises a valve clack 5-1 and a spring 5-2, wherein the valve clack 5-1 is of an umbrella-shaped structure, the front part of the valve clack 5-1 is of a disc shape, one side of the front part of the valve clack 5-1 is matched with the valve seat 3, the other side of the front part of the valve clack is corresponding to the position of the ejector rod 4-3, the tail part of the valve clack 5-1 is of a shaft rod-shaped structure and is positioned in the middle of the annular cylinder body 4-1, and the spring 5-2 is positioned between the tail part of the valve clack 5-1 and the annular cylinder body 4-1 and mainly plays a role in enabling the valve clack 5-1 to be rapidly closed when a pump is stopped.

The communicating pipe assembly 6 comprises a pipeline assembly 6-1, two ends of the pipeline assembly 6-1 are respectively connected with a left cavity of the water cylinder and the inlet end of the valve body 1, the pressure in the two areas is guaranteed to be equal all the time, and a self-cleaning filter screen 6-2 is arranged at the outlet of the pipeline assembly 6-1 connected with the inlet end of the valve body 1.

The control small valve tubing assembly 7 comprises a normally open electromagnetic valve 7-1, a one-way valve 7-4, a normally closed electromagnetic valve 7-2, a needle valve 7-3 and a tubing assembly 7-5, wherein the inlet end of the normally open electromagnetic valve 7-1 is connected with the outlet end of the valve body 1 through the tubing assembly 7-5, and the outlet end of the normally open electromagnetic valve 7-1 is connected with the inlet end of the one-way valve 7-4; the inlet end of the normally closed electromagnetic valve 7-2 is respectively connected with the outlet end of the one-way valve 7-4 and the right cavity of the water cylinder through a tee joint; the inlet end of the needle valve 7-3 is connected with the outlet end of the normally closed electromagnetic valve, and the outlet end of the needle valve 7-3 is communicated with the atmosphere. The inlet end of the one-way valve 7-4 is connected with the outlet end of the normally open electromagnetic valve 7-1, and the outlet end is respectively communicated with the inlet end of the normally closed electromagnetic valve 7-2 and the right cavity of the water cylinder cavity through a tee joint; tubing assembly 7-5 is comprised of tubing and some custom fittings.

Preferably, the inlet end of the normally open electromagnetic valve 7-1 is connected with the outlet of the outlet end of the valve body 1 through the piping component 7-5, and a self-cleaning filter screen 6-2 is arranged at the outlet.

Working principle: the scheme is arranged at the outlet of the water pump, is used for controlling the opening and closing of the water pump and emergency closing and protecting the safety of the water pump and a pipe network when a fault fails. In the aspect of circuit control, the power supply of the normally open electromagnetic valve 7-1, the normally closed electromagnetic valve 7-2 and the water pump power supply of the product are kept synchronous, namely the water pump is powered on, and the two electromagnetic valves are powered on; the water pump loses power, and the two electromagnetic valves lose power, so that the specific function analysis is as follows:

Slow-open function: when the water pump is started, the normally open electromagnetic valve 7-1 and the normally closed electromagnetic valve 7-2 are synchronously powered on, the valve clack 5 pushes the ejector rod 4-3, the ejector rod 3 pushes the annular piston 4-2 to slowly open, the right cavity water of the hydraulic cylinder informs the needle valve of throttling discharge until the valve is fully opened, as shown in figure 1;

Stopping the pump and closing the function at the maximum speed: the valve clack component 5 immediately closes at a very high speed along with the change of the pressure difference before and after stopping the pump, and due to scientific design characteristics such as streamline and axial flow, the means of boosting by the spring 5-2 during closing and the like, the valve clack 5 is closed at the moment when the flow speed at the moment of stopping the pump is changed from zero, and the back flow caused by back pressure is effectively prevented, so that the generation of water hammer is avoided, as shown in figure 2.

Reset function: the reset of the ejector rod 4-3 after stopping the pump is a precondition for ensuring the water pump to be slowly started next time. When the pump is stopped, the normally open electromagnetic valve 7-1 and the normally closed electromagnetic valve 7-2 are simultaneously powered off, back pressure water enters the right cavity of the hydraulic cylinder through the normally open electromagnetic valve 7-2 and the one-way valve 7-4, and the annular piston 4-2 is forced to move rightwards with the ejector rod 4-3 until the valve clack 5 is pressed, as shown in figure 3.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The mute water pump control valve is characterized by comprising a valve body (1), a guide body (2), a valve seat (3), a hydraulic cylinder assembly (4) and a valve clack assembly (5) which are arranged in the valve body (1), and a communicating pipe assembly (6) and a control small valve piping assembly (7) which are arranged on the valve body (1), wherein the valve seat (3) is connected to the inlet end of the valve body (1) and is provided with a sealing surface matched with the valve clack assembly (5), one end of the guide body (2) is matched with the valve body (1), and the other end of the guide body is of a hollow structure and is connected with the valve clack assembly (5); the hydraulic cylinder assembly (4) is positioned in the guide body (2) and is connected with the valve clack assembly (5) to form a left water cylinder cavity and a right water cylinder cavity which are mutually changed;

The communicating pipe assembly (6) is respectively connected with the left cavity of the water cylinder and the inlet end of the valve body (1), and the control small valve tubing assembly (7) is respectively communicated with the right cavity of the water cylinder and the outlet end of the valve body (1) and is communicated with the atmosphere.

2. The mute water pump control valve according to claim 1, wherein the control small valve piping component (7) comprises a normally open electromagnetic valve (7-1), a one-way valve (7-4), a normally closed electromagnetic valve (7-2), a needle valve (7-3) and a piping component (7-5), an inlet end of the normally open electromagnetic valve (7-1) is connected with an outlet end of the valve body (1) through the piping component (7-5), and an outlet end of the normally open electromagnetic valve (7-1) is connected with an inlet end of the one-way valve (7-4); the inlet end of the normally closed electromagnetic valve (7-2) is respectively connected with the outlet end of the one-way valve (7-4) and the right cavity of the water cylinder through a tee joint; the inlet end of the needle valve (7-3) is connected with the outlet end of the normally closed electromagnetic valve, and the outlet end of the needle valve (7-3) is communicated with the atmosphere.

3. The mute water pump control valve according to claim 2, wherein the inlet end of the normally open electromagnetic valve (7-1) is connected with the outlet end of the valve body (1) through a piping component (7-5), and a self-cleaning filter screen (6-2) is arranged at the outlet.

4. The mute water pump control valve according to claim 1, wherein the hydraulic cylinder assembly (4) comprises an annular cylinder body (4-1), an annular piston (4-2) and a plurality of ejector rods (4-3), the annular cylinder body (4-1) is matched with the hollow structure of the flow guide body (2), the annular piston (4-2) is installed inside the annular cylinder body (4-1), each ejector rod (4-3) penetrates through the annular cylinder body (4-1), one end of each ejector rod is connected with the valve clack assembly (5), the other end of each ejector rod is connected with the annular piston (4-2), and the annular piston (4-2) divides the annular cylinder body (4-1) into a left water cylinder cavity and a right water cylinder cavity.

5. The mute water pump control valve according to claim 4, wherein the valve clack assembly (5) comprises a valve clack (5-1) and a spring (5-2), the valve clack (5-1) is of an umbrella-shaped structure, the front part of the valve clack (5-1) is of a disc shape, one side of the front part of the valve clack (5-1) is matched with the valve seat (3), the other side corresponds to the position of the ejector rod (4-3), the tail part of the valve clack (5-1) is of a shaft rod-shaped structure and is positioned in the middle of the annular cylinder body (4-1), and the spring (5-2) is positioned between the tail part of the valve clack (5-1) and the annular cylinder body (4-1).

6. The mute water pump control valve according to claim 1, wherein the valve body (1) is a cylindrical streamline structure and is a central axis symmetrical rotary body; the inlet end and the outlet end of the valve body (1) are flanges, and the flange surface of the outlet end of the valve body (1) is provided with a hole in interference fit with the flow guide body (2).

7. A mute water pump control valve according to claim 1, characterised in that the inlet end of the valve body (1) is provided with a valve seat mating hole in which the valve seat (3) is mounted.

8. A mute water pump control valve according to claim 1, characterised in that the valve seat (3) is an annular body, the sealing surface of the valve seat (3) is conical, and the sealing surface of the valve seat (3) is matched with the conical sealing surface of the valve flap assembly (5).

9. The mute water pump control valve according to claim 1, wherein the diversion body (2) is of a shell type streamline structure, the tail of the diversion body (2) is provided with an annular tail in interference fit with the outlet end of the valve body (1), and the hollow structure of the diversion body (2) is in tight fit with the hydraulic cylinder assembly (4).

10. The mute water pump control valve according to claim 1, wherein the communicating pipe assembly (6) comprises a pipe assembly (6-1), two ends of the pipe assembly (6-1) are respectively connected with the left cavity of the water cylinder and the inlet end of the valve body (1), and a self-cleaning filter screen (6-2) is arranged at the outlet of the pipe assembly (6-1) connected with the inlet end of the valve body (1).