Water pump control valve with protection function

Abstract

The utility model relates to the technical field of valves, in particular to a water pump control valve with a protection function, which comprises a valve body and a lifting screw meshed with the inner wall of the valve body, a valve clack capable of closing the valve body is arranged at the bottom of the lifting screw, and a plurality of buffer pipelines are penetratingly arranged on the outer wall of the valve body. The buffer pipeline comprises a first leading-in pipe arranged on the outer wall of the valve body in a penetrating mode and a rotating pipe arranged at the end of the first leading-in pipe, an absorption pipe is further arranged in the middle section of the rotating pipe in a penetrating mode, and when the valve body is closed, high-pressure water flow is led into the first leading-in pipe and moves and is guided to rotate in the rotating pipe to generate vortexes to impact each other to reduce impact force. And then the residual water flow impact force is absorbed by the absorption pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a water pump control valve with a protection function. Background Art

[0002] A control valve, also known as a regulating valve, has a main structure similar to that of an ordinary valve. The valve body is opened and closed by an opening and closing piece. Some control valves are also equipped with electronic sensing components, which can automatically control the opening and closing of the valve body and control the flow rate of the fluid flowing through it. It is widely used in various industrial fields and is often used in fire protection facilities. The control valve can receive external fire signals and is in a closed state at ordinary times. It will automatically open when a fire occurs, thereby quickly outputting the fire extinguishing fluid to the high-pressure fine water mist nozzle, thereby achieving a rapid response to the fire and effectively reducing the loss of life and property caused by the fire.

[0003] Although the above-mentioned existing technology can solve the corresponding technical problems, it still has certain defects: when the existing water pump control valve is in use, the valve disc is used to control the opening and closing of the water pump control valve, and then the water pump water circuit is connected and closed. When used in the high-pressure water pump water circuit, the water flow velocity in the high-pressure water pump is very fast. At the moment when the water pump control valve is closed, the inertia of the high-pressure water flow will cause the high-pressure water flow to directly and quickly impact the valve body of the water pump control valve, which not only easily produces a loud noise, but also causes the valve body to be subjected to the huge impact force exerted by the high-pressure water flow, which can easily cause fatigue damage to the valve body, a short service life, and prone to bursting and leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a water pump control valve with good protection and long service life in view of the defects and shortcomings of the existing technology.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a water pump control valve with a protective function, comprising a valve body and a lifting screw meshingly connected to the inner wall of the valve body, a valve flap that can close the valve body is provided at the bottom of the lifting screw, and a plurality of buffer pipes are penetrated through the outer wall of the valve body, the buffer pipe comprises a first inlet pipe penetrated through the outer wall of the valve body and a rotating pipe provided at the end of the first inlet pipe, and an absorption pipe is also penetrated through the middle section of the rotating pipe. When the valve body is closed, the high-pressure water flow is introduced into the first inlet pipe and moves, and is guided to rotate in the rotating pipe to generate vortices that impact each other to reduce the impact force, and then enters the absorption pipe to absorb the remaining water flow impact force.

[0006] A further improvement is that the top end of the lifting screw is also provided with a control motor which is detachably connected to the top end of the valve body.

[0007] Further improvement: A connecting flange is provided at the end of the valve body.

[0008] Further improvement: The other end of the rotating pipe is provided with a second inlet pipe penetrating the outer wall of the valve body.

[0009] Further improvement: A number of blocking pieces are staggered on the inner wall of the first inlet pipe.

[0010] Further improvement: A number of blocking pieces are staggered on the inner wall of the second inlet pipe.

[0011] Further improvement: Hemispherical guiding bumps are provided at the corresponding positions of the inner wall of the rotating pipe where the absorption pipe is located.

[0012] Further improvement: The absorption pipe includes a direct current pipe penetrating through the middle section of the rotating pipe and a bursting disc detachably arranged at the bottom of the direct current pipe. A water pressure plate is fitted and slidably arranged on the inner wall of the direct current pipe. A pressure concave disc is provided in the middle section of the water pressure plate, and rough friction blocks are provided at the edge of the water pressure plate.

[0013] Further improvement: A rough friction layer is provided on the inner wall of the direct current pipe.

[0014] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows: At the moment when the valve body is closed, the high-impact water flow can be introduced into the first inlet pipe and the second inlet pipe, and then move along with it and enter the rotating pipe. The rotating pipe is used to change the flow direction of the incoming water flow, and the water flows impact each other to cancel out the impact force. Subsequently, the water flow is introduced into the absorption pipe, so that the remaining impact force of the water flow is offset by the friction force between the water pressure plate and the inner wall of the direct current pipe, thereby greatly reducing the water flow impact applied to the valve body, making the service life of the valve body longer, not easily prone to bursting and water leakage phenomena, and having good protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the front view cross-section of the control valve of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the front view cross-section of the buffer pipeline of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the front view cross-section of the absorption pipe of the present utility model. Detailed implementation mode

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Refer to Figure 1-3As shown in the figure, the technical solution adopted in this specific embodiment is as follows: A water pump control valve with a protection function, including a valve body 1 and a lifting screw rod 3 meshed and connected to the inner wall of the valve body 1. A valve flap 2 capable of closing the valve body 1 is provided at the bottom of the lifting screw rod 3. A number of buffer pipes 5 are also penetrated on the outer wall of the valve body 1. The buffer pipe 5 includes a first inlet pipe 51 penetrated on the outer wall of the valve body 1 and a rotating pipe 52 provided at the end of the first inlet pipe 51. An absorption pipe 53 is also penetrated in the middle section of the rotating pipe 52. The absorption pipe 53 includes a direct current pipe 531 penetrated in the middle section of the rotating pipe 52 and a bursting disc 533 detachably provided at the bottom of the direct current pipe 531. A water pressure plate 535 is fitted and slidably arranged on the inner wall of the direct current pipe 531. A pressure concave disc 536 is provided in the middle section of the water pressure plate 535. Rough friction blocks 534 are provided at the edge of the water pressure plate 535. When closing the valve body 1, high-pressure water flow is introduced into the first inlet pipe 51 and moves, and is guided to rotate in the rotating pipe 52 to generate eddy currents that impact each other to reduce the impact force, and then enters the absorption pipe 53 to absorb the remaining water flow impact force. When in use, the end of the valve body 1 is installed into the water pump pipeline to be controlled, so that the water flow can enter the valve body 1 and flow out from the other end of the valve body 1, and the valve flap 2 is driven to lift by rotating the lifting screw rod 3 to control the opening and closing of the valve body 1. When the valve body 1 is closed by the valve flap 2, at this time, the high-pressure water flow will generate a strong impact force under the action of inertia and make the water flow continue to flow at a high speed. At this time, the high-pressure water flow can be introduced into the first inlet pipe 51, and the high-speed flowing water flow is introduced into the rotating pipe 52 along with the first inlet pipe 51. The rotating pipe 52 is an arc-shaped pipeline structure and is made of high-strength metal such as tungsten alloy, etc., so that the high-speed water flow quickly enters the rotating pipe 52 and is guided to rotate to form a water flow eddy current, so that the water flow collides and impacts with each other in the rotating pipe 52 to cancel out the impact force with each other. Then the water flow will rush into the absorption pipe 53, and then flow downward along the direct current pipe 531 and push the water pressure plate 535, and cooperate with the sunken groove of the pressure concave disc 536 to contact the water flow with a larger area, so that the impact force absorption is more sufficient. At this time, the water pressure plate 535 can move downward along the direct current pipe 531. Friction blocks 534 are provided on both sides of the water pressure plate 535, which can be made of rough rubber material. Then, the friction force is generated by the mutual friction between the friction blocks 534 and the inner wall of the direct current pipe 531, and the impact force generated by the water flow is offset by the friction force, so as to slow down and absorb the impact force of the remaining water flow. If the water flow pressure is still too high, the bursting disc 533 can be burst to release the pressure. The bursting disc 533 can be replaced, and a brand-new one can be replaced after being damaged. Thus, the water flow impact applied to the valve body 1 is greatly reduced, the service life of the valve body 1 is longer, and it is not easy to appear the phenomenon of bursting and water leakage, and the protection performance is good;

[0021] A control motor 4 detachably connected to the top of the valve body 1 is further provided at the top end of the lifting screw rod 3, which is beneficial to automatically control the rotation of the lifting screw rod 3 through signals and has a higher degree of automation;

[0022] A connecting flange 6 is provided at the end of the valve body 1, which is beneficial to make the connection between the valve body 1 and the pipeline more convenient and rapid;

[0023] The other end of the rotating pipe 52 is provided with a second inlet pipe 54 penetrating the outer wall of the valve body 1, which is beneficial to allowing more impact water flow to enter the rotating pipe 52 and enter from both sides simultaneously, so that the water flows collide and further cancel out the impact force with each other;

[0024] A number of blocking pieces 55 are staggered on the inner wall of the first inlet pipe 51, which is beneficial to reducing the impact of the water flow after it enters the first inlet pipe 51 by being blocked, and at the same time making its flow path longer, further weakening the impact force during its flow;

[0025] A number of blocking pieces 55 are staggered on the inner wall of the second inlet pipe 54, which is beneficial to reducing the impact of the water flow after it enters the second inlet pipe 54 by being blocked, and at the same time making its flow path longer, further weakening the impact force during its flow;

[0026] Hemispherical guiding protrusions 56 are provided at the positions corresponding to the absorption pipes 53 on the inner wall of the rotating pipe 52, which is beneficial to better guiding the inflowing water flow into the absorption pipes 53;

[0027] A rough friction layer 532 is provided on the inner wall of the direct current pipe 531, which is beneficial to increasing the friction coefficient of the inner wall of the direct current pipe 531, and thus generating a higher frictional resistance when sliding with the friction block 534.

[0028] Working principle of the utility model: When the utility model is in use, the end of the valve body 1 is inserted into the water pump pipeline to be controlled, so that water flow can enter the valve body 1 and flow out from the other end of the valve body 1. The valve flap 2 is lifted and lowered by rotating the lifting screw rod 3 to control the opening and closing of the valve body 1. When the valve body 1 is closed by the valve flap 2, at this time, the high-pressure water flow will generate a strong impact force under the action of inertia, and make the water flow continuously flow at a high speed. At this time, the high-pressure water flow can be introduced into the first inlet pipe 51, and the high-speed flowing water flow is introduced into the rotating pipe 52 along with the first inlet pipe 51. The rotating pipe 52 is an arc-shaped pipeline structure and is made of high-strength metal such as tungsten alloy. Therefore, the high-speed water flow quickly enters the rotating pipe 52 and is guided to generate rotation, forming a water flow vortex. Then, the water flow collides and impacts with each other in the rotating pipe 52, and the impact forces cancel each other out. Subsequently, the water flow will rush into the absorption pipe 53, and then flow downward along the direct current pipe 531, and push the water pressure plate 535, and cooperate with the sunken groove of the pressure concave disc 536 to contact the water flow in a larger area, so that the impact force is absorbed more fully. At this time, the water pressure plate 535 can move downward along the direct current pipe 531. Friction blocks 534 are arranged on both sides of the water pressure plate 535 and can be made of rough rubber material. Therefore, the friction force is generated by the mutual friction between the friction blocks 534 and the inner wall of the direct current pipe 531, and the impact force generated by the water flow is offset by the friction force, so as to slow down and absorb the impact force of the remaining water flow. If the water flow pressure is still too high, the bursting disc 533 can burst to release the pressure. The bursting disc 533 can be replaced, and a new one can be replaced after it is damaged. Thus, the water flow impact applied to the valve body 1 is greatly reduced, the service life of the valve body 1 is longer, and it is not easy to burst and leak water, and the protection performance is good.

[0029] What the utility model wants to protect is the structure of the product. The models of each component are not the content protected by the utility model and are also well-known technologies. As long as the components that can achieve the above functions of the utility model on the market can be selected and applied. Therefore, the parameters such as the model of the component are not described in detail in the utility model. The contribution of the utility model lies in scientifically combining each component together.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art of this industry should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and descriptions only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents. Those parts not detailed in the utility model are all well-known technologies to those skilled in the art.

Claims

1. A water pump control valve with a protection function, comprising a valve body (1) and a lifting screw rod (3) meshed and connected to the inner wall of the valve body (1). A valve flap (2) capable of closing the valve body (1) is provided at the bottom of the lifting screw rod (3), and it is characterized in that: The outer wall of the valve body (1) is also penetrated by a plurality of buffer pipes (5), and the buffer pipe (5) includes a first inlet pipe (51) penetrated by the outer wall of the valve body (1) and a rotating pipe (52) arranged at the end of the first inlet pipe (51). The middle section of the rotating pipe (52) is also penetrated by an absorption pipe (53). When the valve body (1) is closed, the high-pressure water flow is introduced into the first inlet pipe (51) and moves, and is guided to rotate in the rotating pipe (52) to generate vortexes that impact each other to reduce the impact force, and then enters the absorption pipe (53) to absorb the remaining water flow impact force.

2. The water pump control valve with a protection function according to claim 1, characterized in that: The top end of the lifting screw (3) is also provided with a control motor (4) which is detachably connected to the top end of the valve body (1).

3. The water pump control valve with a protection function according to claim 1, characterized in that: The end of the valve body (1) is provided with a connecting flange (6).

4. A water pump control valve with a protection function according to claim 1, characterized in that: The other end of the rotating tube (52) is provided with a second introduction tube (54) penetrating the outer wall of the valve body (1).

5. The water pump control valve with a protection function according to claim 1, characterized in that: The inner wall of the first inlet pipe (51) is staggeredly provided with a plurality of blocking pieces (55).

6. The water pump control valve with a protection function according to claim 4, characterized in that: The inner wall of the second inlet pipe (54) is staggeredly provided with a plurality of blocking pieces (55).

7. The water pump control valve with a protection function according to claim 1, wherein: A hemispherical guide protrusion (56) is provided on the inner wall of the rotating tube (52) at a position corresponding to the absorption tube (53).

8. A water pump control valve with a protection function according to claim 1, characterized in that: The absorption tube (53) comprises a direct current tube (531) penetrating the middle section of the rotating tube (52) and a bursting disc (533) detachably arranged at the bottom of the direct current tube (531). A water pressure plate (535) is provided on the inner wall of the direct current tube (531) in a sliding manner. A pressure concave disc (536) is provided in the middle section of the water pressure plate (535). A rough friction block (534) is provided on the edge of the water pressure plate (535).

9. The water pump control valve with a protection function according to claim 8, characterized in that: The inner wall of the direct current pipe (531) is provided with a rough friction layer (532).

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