Self-adapting pressure compensation type circular butterfly valve

Abstract

This utility model discloses an adaptive pressure-compensated circular butterfly gate, belonging to the field of butterfly gate technology. It includes a valve body with a valve stem seat on top and a controller mounted above the valve stem seat. The output end of the controller is connected to a valve stem body, and the valve stem body is connected to a valve plate via the valve stem seat. The valve plate is located inside the valve body, and a pressure compensation component is provided on the outer side of the valve plate. This pressure compensation component includes a ring-shaped air bladder, which is located on the outer side of the valve plate, corresponding to the inner wall of the valve body. In this adaptive pressure-compensated circular butterfly gate, when the butterfly valve is closed and the pressure inside the pipe increases, the sealing pressure inside the pipe also increases, compressing the ring-shaped air bladder and causing it to deform. The deformed ring-shaped air bladder then increases the sealing between the valve plate and the valve body, preventing leakage due to valve plate malfunction.

Description

Technical Field

[0001] This utility model relates to the field of butterfly gate technology, specifically an adaptive pressure-compensated circular butterfly gate. Background Technology

[0002] Irrigation butterfly gates are butterfly valves specifically designed for agricultural irrigation systems. Their core functions are to control the flow of water in irrigation pipelines, regulate flow, and stabilize pressure, adapting to the specific needs of agricultural scenarios. Pressure-compensated circular butterfly gates are a type of butterfly valve that uses a special structural design to compensate for the impact of pressure changes on the valve's sealing and operational performance. When the pressure in the pipeline changes, the compensation mechanism of the pressure-compensated circular butterfly gate automatically adjusts the sealing pressure ratio between the valve seat and the butterfly plate according to the pressure change. For example, in existing technology 1 (Chinese patent application number CN202022949932.4, application date 2020-12-11), direct-buried pipeline butterfly gates are widely used. They are simple to construct, low in cost, easy to install, and can be directly buried and backfilled. The gate plate is tightly sealed, the gate core can be pulled out from the track, maintenance is convenient, gate cores of the same model are interchangeable, the water pressure on both sides of the gate plate on the central shaft is equal, opening and closing is easy, the required operating power is small, and intelligent remote control is possible.

[0003] While existing technologies can improve the efficiency of butterfly gates, in actual irrigation and water storage processes, when the valve plate fails to close properly due to a malfunction, leakage occurs. Furthermore, the flow of the medium cannot be completely cut off, posing certain safety hazards and resulting in poor practicality. Therefore, an adaptive pressure-compensated butterfly gate has been proposed to effectively solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide an adaptive pressure-compensated circular butterfly gate to solve the problems mentioned in the background art, such as the leakage caused by the valve plate failing to close properly due to a malfunction, the inability to cut off the flow of the medium, the safety hazards, and the poor practicality of the current market.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adaptive pressure-compensated circular butterfly gate, comprising a valve body and a mounting hole groove opened on the outer side, a valve stem seat provided above the valve body, and a controller installed above the valve stem seat, the output end of the controller being connected to the valve stem body, and the valve stem body being connected to a valve plate through the valve stem seat, and the valve plate being disposed inside the valve body, the outer side of the valve plate being provided with a pressure compensation component, wherein the pressure compensation component includes a ring-shaped air bladder, the ring-shaped air bladder being disposed on the outer side of the valve plate, and the outer side of the valve plate corresponding to the inner wall of the valve body.

[0006] Preferably, the ring-shaped airbag is circular, and a vertical strip airbag is fitted to the outer side of the valve plate, with a tube corresponding to the outer side of the vertical strip airbag.

[0007] Preferably, a pipe is installed on the outside of the valve body via a flange, and a cleaning assembly is provided inside the pipe, wherein the cleaning assembly includes a cleaning rack, and the cleaning rack is slidably installed inside the pipe.

[0008] Preferably, sliding members are fixedly installed on both sides of the cleaning frame, and the two sliding members are symmetrically arranged about the vertical center line of the valve plate, and the two sliding members are slidably connected to the inner wall of the pipe body.

[0009] Preferably, one end of two return springs is fixedly connected inside the tube, and the two return springs have the same structure, and the other end of the two return springs is fixedly connected to the cleaning frame.

[0010] Preferably, two top rods are fixedly installed on the right side of the cleaning frame, and valve plates are correspondingly installed on the outer sides of the two top rods.

[0011] Preferably, the outer ends of the two top rods are arc-shaped.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This adaptive pressure-compensated circular butterfly gate, when the butterfly valve is in the closed state and the pressure inside the pipe increases, the sealing pressure inside the pipe will also increase, squeezing the ring-shaped air bladder to deform. At this time, the ring-shaped air bladder under compression and deformation will increase the sealing between the valve plate and the valve body, and prevent leakage from the valve body due to valve plate failure.

[0013] This adaptive pressure-compensated circular butterfly gate reduces the sealing pressure inside the pipe body when the pressure decreases, and then the circular airbag automatically deforms and resets, thereby reducing the valve's operating torque and achieving adaptive pressure compensation regulation.

[0014] This adaptive pressure-compensated circular butterfly gate, when the sealing pressure inside the pipe increases, simultaneously squeezes the vertical air bladders on the outer surface of the valve plate to deform. This deformation of the vertical air bladders increases the valve plate's own pressure resistance, preventing deformation damage caused by prolonged compression and thus extending the valve plate's service life. Conversely, when the sealing pressure inside the pipe decreases, the vertical air bladders automatically deform and reset, facilitating subsequent cyclic use.

[0015] This adaptive pressure-compensated circular butterfly gate, when it is necessary to open the butterfly valve for irrigation, simply uses the controller to drive the valve stem body to rotate the valve plate inside the valve body, so that the valve plate rotates 90° inside the valve body, thereby completing the irrigation of the butterfly valve. At the same time as the valve plate rotates, it squeezes the top rod to drive the cleaning frame to move in position. At this time, the cleaning frame after being squeezed and moved will move and clean the impurities adhering to the inner wall of the pipe, preventing impurities from sticking to the inner wall of the pipe and affecting subsequent irrigation.

[0016] This adaptive pressure-compensated circular butterfly gate, when the valve plate and the top rod are no longer in actual contact, the two return springs will use their own elastic force to elastically reset the position of the cleaning frame after it has been squeezed and moved, so as to facilitate the subsequent auxiliary cleaning frame to perform cyclic cleaning treatment, making it more practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the three-dimensional structure of the valve body and valve plate of this utility model; Figure 3 This is a partial three-dimensional structural diagram of the valve plate and the ring-shaped airbag of this utility model; Figure 4 This is a three-dimensional structural diagram of the vertical strip airbag and the ring-shaped airbag after compression deformation of this utility model; Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 6 This is a side-view perspective three-dimensional structural diagram of the tube body and cleaning frame of this utility model; Figure 7 This is a three-dimensional structural diagram of the tube body and cleaning frame after they are squeezed and moved.

[0018] In the diagram: 1. Valve body; 2. Mounting slot; 3. Pipe body; 4. Valve stem seat; 5. Controller; 6. Valve plate; 7. Vertical airbag; 8. Ring-shaped airbag; 9. Valve stem body; 10. Cleaning frame; 11. Sliding component; 12. Top rod; 13. Return spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides the following technical solution: an adaptive pressure-compensated circular butterfly gate. Example 1: To address the problem that existing valve plates malfunction and fail to close properly, leading to leakage and the inability to cut off media flow, posing safety hazards and poor practicality, the following solution is disclosed: a valve body 1, and an external mounting slot 2. A valve stem seat 4 is located above the valve body 1, and a controller 5 is mounted above the valve stem seat 4. The output of the controller 5 is connected to a valve stem body 9, and the valve stem body 9 is connected to a valve plate 6 via the valve stem seat 4. The valve plate 6 is located within the valve body. Inside valve body 1, a pressure compensation component is provided on the outer side of valve plate 6. This component includes a ring-shaped air bladder 8, which is located on the outer side of valve plate 6. The outer side of valve plate 6 corresponds to the inner wall of valve body 1. When the butterfly valve is closed and the pressure inside pipe body 3 increases, the sealing pressure inside pipe body 3 also increases, causing the ring-shaped air bladder 8 to deform. This deformed ring-shaped air bladder 8 increases the sealing between valve plate 6 and valve body 1, preventing leakage from valve body 1 due to valve plate 6 malfunction. Figures 1-4 As shown, when the pressure decreases, the sealing specific pressure inside the pipe body 3 also decreases accordingly. Subsequently, the annular airbag 8 will automatically deform and reset, thereby reducing the operating torque of the valve to achieve adaptive pressure compensation regulation. Figure 1 and Figure 3 As shown.

[0021] The circular airbag 8 is round in shape. A vertical airbag 7 is fitted to the outer side of the valve plate 6, and a tube 3 corresponds to the outer side of the vertical airbag 7. When the sealing pressure inside the tube 3 increases, it simultaneously compresses the vertical airbag 7 on the outer surface of the valve plate 6, causing it to deform. This deformation of the vertical airbag 7 increases the pressure resistance of the valve plate 6, preventing deformation and damage due to prolonged compression, thus extending its service life. Conversely, when the sealing pressure inside the tube 3 decreases, the vertical airbag 7 automatically deforms and resets, facilitating subsequent cyclic use. Figure 3 As shown.

[0022] Example 2 differs from Example 1 in that, during the opening and closing of the valve plate 6, the push rod 12 can be driven to push the cleaning frame 10 to slide against the inner wall of the pipe body 3 via the sliding member 11. This allows the moving cleaning frame 10 to move and clean impurities adhering to the inner wall of the pipe body 3. The following is disclosed: A pipe body 3 is mounted on the outer side of the valve body 1 via a flange, and a cleaning assembly is installed inside the pipe body 3. The cleaning assembly includes a cleaning frame 10, which is slidably mounted inside the pipe body 3. Sliding members 11 are fixedly mounted on both sides of the cleaning frame 10, and the two sliding members 11 are symmetrically arranged about the vertical center line of the valve plate 6. The two sliding members 11 are slidably connected to the inner wall of the pipe body 3. Two push rods 12 are fixedly mounted on the right side of the cleaning frame 10, and the outer sides of the two push rods 12 correspond to the valve plate 6. The outer end is arc-shaped. When the butterfly valve needs to be opened for irrigation, the controller 5 simply drives the valve stem body 9 to rotate the valve plate 6 inside the valve body 1, causing the valve plate 6 to rotate 90° inside the valve body 1. This completes the irrigation process. Simultaneously, the valve plate 6 rotates, pressing the top rod 12 to drive the cleaning frame 10 to move. The moved cleaning frame 10 then moves and cleans the impurities adhering to the inner wall of the pipe body 3, preventing impurities from sticking to the inner wall of the pipe body 3 and affecting subsequent irrigation. Figure 5 and Figure 6 As shown.

[0023] Two return springs 13 are fixedly connected to one end inside the tube body 3. The two return springs 13 have identical structures, and the other end of each return spring 13 is fixedly connected to the cleaning frame 10. When the valve plate 6 and the push rod 12 are no longer in actual contact, the two return springs 13 will elastically reset the position of the cleaning frame 10 after compression and movement through their own elastic force, facilitating subsequent cyclic cleaning by the auxiliary cleaning frame 10. Figure 7 As shown.

[0024] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive pressure-compensated circular butterfly gate, comprising a valve body (1) and a mounting hole (2) opened on the outside, wherein a valve stem seat (4) is provided above the valve body (1), and a controller (5) is installed above the valve stem seat (4), wherein the output end of the controller (5) is connected to a valve stem body (9), and the valve stem body (9) is connected to a valve plate (6) through the valve stem seat (4), and the valve plate (6) is disposed inside the valve body (1); Its features are: The outer side of the valve plate (6) is provided with a pressure compensation component, which includes a ring-shaped airbag (8). The ring-shaped airbag (8) is provided on the outer side of the valve plate (6), and the outer side of the valve plate (6) corresponds to the inner wall of the valve body (1).

2. The adaptive pressure-compensated circular butterfly gate according to claim 1, characterized in that: The circular airbag (8) is round, and a vertical airbag (7) is attached to the outside of the valve plate (6), and a tube (3) is attached to the outside of the vertical airbag (7).

3. The self- adaptive pressure-compensated butterfly valve according to claim 1, wherein: The valve body (1) is fitted with a pipe body (3) via a flange on its outer side, and a cleaning assembly is provided inside the pipe body (3), wherein the cleaning assembly includes a cleaning rack (10), and the cleaning rack (10) is slidably installed inside the pipe body (3).

4. The self- adaptive pressure-compensated butterfly valve according to claim 3, wherein: Sliding parts (11) are fixedly installed on both sides of the cleaning rack (10), and the two sliding parts (11) are symmetrically arranged about the vertical center line of the valve plate (6), and the two sliding parts (11) are slidably connected to the inner wall of the pipe body (3).

5. The self- adaptive pressure-compensated butterfly valve according to claim 4, characterized in that: The tube body (3) has two return springs (13) fixedly connected to one end of each other, and the two return springs (13) have the same structure. The other end of the two return springs (13) is fixedly connected to the cleaning rack (10).

6. The self- adaptive pressure-compensated circular butterfly valve according to claim 5, characterized in that: Two top rods (12) are fixedly installed on the right side of the cleaning frame (10), and valve plates (6) are corresponding to the outer sides of the two top rods (12).

7. The self- adaptive pressure-compensated butterfly valve according to claim 6, wherein: The outer ends of the two top rods (12) are arc-shaped.

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