Automatic pressure balance valve

Abstract

An automatic pressure balance valve comprises a valve body, a water inlet connector arranged on the left side of the valve body and a water outlet connector arranged on the right side of the valve body, a valve ball matched with the valve body is arranged in the valve body, a valve rod is arranged at the upper end of the valve ball, the upper end of the valve rod upwards penetrates out of the valve body and is provided with a handle, and a lower connector is arranged on the lower surface of the left portion of the water outlet connector. The lower end of the lower joint is screwed with an auxiliary joint matched with the lower joint; a water separation seat is arranged in the left part of the water outlet joint; the internal space of the water outlet joint is divided into a left water conveying hole in the left side of the water separation seat and a right water conveying hole in the right side of the water separation seat by the water separation seat; the lower surface of the water outlet connector is provided with an embedded hole corresponding to the position of the water insulation base, and the bottom of the embedded hole extends to the upper end of the water insulation base. The right end of the left water conveying hole is communicated with the embedding hole; and the upper end opening of the lower joint encloses the lower end opening of the embedding hole. The automatic pressure balance valve can automatically adjust water pressure when the water pressure is too small or too large.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to an automatic pressure balancing valve. Background Art

[0002] The valve has an inlet joint and an outlet joint. The inlet joint is used to connect the inlet pipe, and the outlet joint is used to connect the outlet pipe. When the valve needs to be opened, the valve stem can be rotated by the handle to realize the rotation of the valve ball in the valve. The inlet joint and the outlet joint can be connected through the valve ball. At this time, the water flow can flow into the outlet joint through the inlet joint, and finally flow into the outlet pipe, thereby achieving the effect of conveying water.

[0003] When the valve is actually conveying water, it will inevitably encounter unstable water pressure. Sometimes the water pressure is too high, and sometimes it is too low. Traditional valves only have the function of conveying water and cannot automatically adjust the water pressure. When the water pressure is too high, it will continuously impact the inner wall of the valve and the inner wall of the pipe connected to the valve, affecting the service life of the valve and the pipe. The connection point between the valve and the pipe will also be impacted, which can easily cause the seal of the connection point between the valve and the pipe to be damaged and cause water leakage. When the water pressure is too low, the water flow rate is reduced, which can easily lead to failure to meet actual water demand. Utility Model Content

[0004] The utility model aims to solve the existing technical problem and to provide an automatic pressure balancing valve, which can automatically adjust the water pressure when the water pressure is too low or too high.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses an automatic pressure balancing valve, comprising a valve body, a water inlet joint arranged on the left side of the valve body and a water outlet joint arranged on the right side of the valve body, a valve ball matched with the valve body is arranged in the valve body, a valve stem is arranged on the upper end of the valve ball, the upper end of the valve stem passes upwardly out of the valve body and is provided with a handle, a lower joint is arranged on the lower surface of the left part of the water outlet joint; an auxiliary joint matched with the lower end of the lower joint is screwed on the lower end; a water-blocking seat is arranged in the left part of the water outlet joint; the water-blocking seat divides the internal space of the water outlet joint into a left water delivery hole located on the left side of the water-blocking seat and a right water delivery hole located on the right side of the water-blocking seat; an embedded hole corresponding to the position of the water-blocking seat is arranged on the lower surface of the water outlet joint, and the bottom of the embedded hole extends to the upper end of the water-blocking seat; the right end of the left water delivery hole The lower end of the lower joint is connected with the embedding hole; the upper end port of the lower joint encloses the lower end opening of the embedding hole; the embedding hole is provided with an upper tube matching it; the left outer wall of the middle part of the upper tube is provided with a water inlet hole connected with its internal space; the internal space of the upper tube is connected with the left water delivery hole through the water inlet hole; the lower end of the upper tube passes downward to the outside of the embedding hole and is provided with a positioning structure matching with the lower surface of the water outlet joint; the inner wall of the auxiliary joint is provided with an annular limiting step; a set of auxiliary springs outside the lower end of the upper tube is provided between the limiting step and the positioning structure; the upper tube is provided with a pressure regulating structure matching it; the lower surface of the water outlet joint is provided with a water outlet hole, and the internal space of the lower joint is connected with the right water delivery hole through the water outlet hole.

[0007] The pressure regulating structure comprises a limit ring screwed into the pipe opening at the upper end of the upper tube; an annular upper limit portion is extended inwardly from the inner wall of the upper end of the inner hole of the limit ring; an annular lower limit portion is extended inwardly from the inner wall of the pipe opening at the lower end of the upper tube; a pressure regulating piece matching with it is arranged in the inner hole of the lower limit portion; the lower end of the pressure regulating piece is downwardly inserted into the auxiliary joint, and the auxiliary spring is sleeved on the outside of the pressure regulating piece; a water inlet hole is arranged at the center of the upper end face of the pressure regulating piece; an annular clamping portion is arranged on the outer wall of the upper end of the pressure regulating piece, and the lower surface of the clamping portion is aligned with the lower limit portion The upper surfaces are in contact with each other; a pressure-regulating spring is arranged between the lower surface of the upper limit portion and the outer edge of the upper end surface of the pressure-regulating piece; the upper end of the pressure-regulating spring is located in the limiting ring, and the lower end of the pressure-regulating spring is located in the locking portion; the inner walls on the front and rear sides of the upper part of the pressure-regulating piece are provided with symmetrical water holes; the outer walls on the front and rear sides of the pressure-regulating piece are both provided with pressure-regulating grooves that are connected with the water holes, and the width of the pressure-regulating grooves is greater than the width of the water holes; the upper part of the pressure-regulating groove is connected with the water holes, and the notch at the lower end of the pressure-regulating groove is located on the lower end surface of the pressure-regulating piece; the width of the pressure-regulating groove gradually decreases from top to bottom.

[0008] A center hole communicating with the water inlet hole is arranged at the center of the lower end surface of the pressure regulating member.

[0009] The width of the water through hole decreases gradually from top to bottom.

[0010] The positioning structure includes a ring-shaped positioning part arranged on the outer wall of the lower part of the upper tube, and the upper surface of the positioning part is in contact with the lower surface of the water outlet joint; a positioning surface is arranged on the left side wall of the positioning part; a positioning plate in contact with the positioning surface is arranged on the lower surface of the water outlet joint; the auxiliary spring is arranged between the lower surface of the positioning part and the limiting step.

[0011] A left pressure measuring hole communicating with the left water supply hole is arranged on the rear outer wall of the water outlet joint; a right pressure measuring hole communicating with the right water supply hole is arranged on the rear side wall of the water outlet joint; and pressure gauges matching with them are arranged in both the left pressure measuring hole and the right pressure measuring hole.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the prior art, the automatic pressure balancing valve adopting the structure of the utility model can not only effectively buffer the water pressure through the pressure regulating spring when the water pressure is too high, but also can use the pressure regulating groove to guide and increase the pressure of the water flow, so that the pressure regulating part moves upward, thereby effectively reducing the water outlet area of ​​the water hole, and further reducing the water pressure by limiting the flow rate. When the water pressure is too low, the pressure regulating part can be moved down and reset by the pressure regulating spring, thereby increasing the water outlet area of ​​the water hole, and effectively increasing the water pressure by increasing the flow rate, and finally achieving the effect of automatic pressure regulation, ensuring that the water pressure of the water flow flowing from the water outlet joint into the water outlet pipeline is normal water pressure, effectively avoiding the situation where high-pressure water flow impacts the inner wall of the valve body, the inner wall of the pipeline or the connection position of the valve body and the pipeline for a long time, causing damage, and at the same time can effectively ensure that the water flow always has sufficient water pressure and flow to meet actual water use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the automatic pressure balancing valve of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the pressure regulating member and the upper tube when assembled. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] See also Figure 1 , Figure 2The utility model provides an automatic pressure balancing valve, comprising a valve body 1, a water inlet joint 2 arranged on the left side of the valve body 1 and a water outlet joint 3 arranged on the right side of the valve body 1, a valve ball 4 matching therewith is arranged in the valve body 1, a valve stem 5 is arranged on the upper end of the valve ball 4, the upper end of the valve stem 5 passes upward to the outside of the valve body 1 and is provided with a handle 6, a lower joint 7 is arranged on the lower surface of the left part of the water outlet joint 3; an auxiliary joint 8 matching therewith is screwed on the lower end of the lower joint 7; a water stop seat 9 is arranged in the left part of the water outlet joint 3; the water stop seat 9 divides the internal space of the water outlet joint 3 into a left water delivery hole 10 located on the left side of the water stop seat 9 and a right water delivery hole 11 located on the right side of the water stop seat 9; an embedded hole 12 corresponding to the position of the water stop seat 9 is arranged on the lower surface of the water outlet joint 3, and the bottom of the embedded hole 12 extends to the upper end of the water stop seat 9; the right end of the left water delivery hole 10 and the embedded hole 12 are interpenetrated; the upper end port of the lower joint 7 encloses the lower end opening of the embedding hole 12; the embedding hole 12 is provided with an upper tube 13 matching it; the left outer wall of the middle part of the upper tube 13 is provided with a water inlet hole 14 interpenetrating with its internal space; the internal space of the upper tube 13 is interpenetrated with the left water delivery hole 10 through the water inlet hole 14; the lower end of the upper tube 13 passes downward to the outside of the embedding hole 12 and is provided with a positioning structure matching the lower surface of the water outlet joint 3; the inner wall of the auxiliary joint 8 is provided with an annular limiting step 15; a set of auxiliary springs 16 outside the lower end of the upper tube 13 is provided between the limiting step 15 and the positioning structure; the upper tube 13 is provided with a pressure regulating structure matching it; the lower surface of the water outlet joint 3 is provided with a water outlet hole 17, and the internal space of the lower joint 7 is interpenetrated with the right water delivery hole 11 through the water outlet hole 17.

[0018] The pressure regulating structure includes a limit ring 18 screwed into the upper end of the upper tube 13; an annular upper limit portion 19 is extended inwardly from the inner wall of the upper end of the inner hole of the limit ring 18; an annular lower limit portion 20 is extended inwardly from the inner wall of the lower end of the upper tube 13; a pressure regulating piece 21 matching with it is provided in the inner hole of the lower limit portion 20; the lower end of the pressure regulating piece 21 is downwardly inserted into the auxiliary joint 8, and the auxiliary spring 16 is sleeved on the outside of the pressure regulating piece 21; a water inlet hole 22 is provided at the center of the upper end face of the pressure regulating piece 21; an annular clamping portion 23 is provided on the outer wall of the upper end of the pressure regulating piece 21, and the lower surface of the clamping portion 23 is aligned with the upper surface of the lower limit portion 20. The surfaces are in contact with each other; a pressure-regulating spring 24 is provided between the lower surface of the upper limit portion 19 and the outer edge of the upper end surface of the pressure-regulating member 21; the upper end of the pressure-regulating spring 24 is located in the limiting ring 18, and the lower end of the pressure-regulating spring 24 is located in the locking portion 23; the inner walls on both sides of the front and rear sides of the upper part of the pressure-regulating member 21 are provided with symmetrical water holes 25; the outer walls on both sides of the front and rear sides of the pressure-regulating member 21 are provided with pressure-regulating grooves 26 that are connected with the water holes 25, and the width of the pressure-regulating grooves 26 is greater than the width of the water holes 25; the upper part of the pressure-regulating groove 26 is connected with the water holes 25, and the notch at the lower end of the pressure-regulating groove 26 is located on the lower end surface of the pressure-regulating member 21; the width of the pressure-regulating groove 26 gradually decreases from top to bottom.

[0019] The center of the lower end surface of the pressure regulating member 21 is provided with a center hole 27 which is connected with the water inlet hole 22 .

[0020] The width of the water through hole 25 decreases gradually from top to bottom.

[0021] The positioning structure includes a ring-shaped positioning portion 28 provided on the outer wall of the lower part of the upper tube 13, and the upper surface of the positioning portion 28 is in contact with the lower surface of the water outlet joint 3; a positioning surface 29 is provided on the left side wall of the positioning portion 28; a positioning plate 30 in contact with the positioning surface is provided on the lower surface of the water outlet joint 3; the auxiliary spring 16 is provided between the lower surface of the positioning portion 28 and the limiting step 15.

[0022] A left pressure measuring hole 31 communicating with the left water supply hole 10 is provided on the rear outer wall of the water outlet joint 3; a right pressure measuring hole 32 communicating with the right water supply hole 11 is provided on the rear side wall of the water outlet joint 3; and pressure gauges matching the left pressure measuring hole 31 and the right pressure measuring hole 32 are provided in each of the left pressure measuring hole 31 and the right pressure measuring hole 32.

[0023] The method of using the utility model is as follows:

[0024] The auxiliary connector 8 can be used to connect other pipelines to achieve a diversion effect. When there is no need to connect other pipelines, a sealing cover is generally screwed onto the lower end of the auxiliary connector 8 to seal the lower end port of the auxiliary connector 8. Therefore, under normal conditions, the internal space of the auxiliary connector 8 is a closed space.

[0025] When the valve needs to be used, the handle 6 can be turned. At this time, the valve stem 5 will drive the valve ball 4 to rotate. As the valve ball 4 rotates, the water inlet joint 2 will eventually connect with the left water delivery hole 10 through the opening and closing hole 401 on the valve ball 4. At this time, the water flow in the water inlet pipeline connected to the water inlet joint 2 will flow into the water inlet hole 14 through the left water delivery hole 10, and then enter the upper tube 13. As the water flow continues to flow into the upper tube 13, the water flow will enter the water inlet hole 22 through the upper end hole of the water inlet hole 22, and then the water flow will enter the pressure regulating groove 26 through the water through hole 25, and then enter the right water delivery hole 11 through the internal space of the auxiliary joint 8 and the water outlet hole 17 in turn, and finally flow into the water outlet pipeline connected to the water outlet joint 3 from the right end port for use.

[0026] Since the width of the pressure regulating groove 26 gradually decreases from top to bottom, when the water flows through the pressure regulating groove 26 from top to bottom, the pressure regulating groove 26 will effectively increase the water pressure by its own narrowing groove width. The principle of this pressurization method is similar to that of a Venturi tube. When the valve is opened, the internal space of the auxiliary joint 8 is filled with water. At this time, the water flow in the auxiliary joint 8 effectively encloses the outer wall of the pressure regulating component 21, forming a barrier on the outer circle of the pressure regulating component 21, which in disguise covers the outer notch of the pressure regulating groove 26. At this time, the barrier on the outer circle of the pressure regulating component 21 forms a resistance much greater than the resistance below the pressure regulating groove 26, thereby ensuring that most of the water flowing from the water through hole 25 into the pressure regulating groove 26 flows downward along the pressure regulating groove 26 under the obstruction of the barrier, thereby effectively ensuring the pressurization effect.

[0027] When the water pressure flowing from the water inlet joint 2 into the valve body 1 is too high, the water will directly impact the right inner wall of the upper tube under the guidance of the left water delivery hole 10, playing a preliminary role in buffering the water pressure. As the water flows downward, it will eventually flow into the pressure regulating groove 26. The pressure increase of the water through the pressure regulating groove 26 will cause the actual water pressure inside the auxiliary joint 8 to be greater than the water pressure in the upper tube. At this time, under the action of the water pressure difference, the pressure regulating member 21 will be pushed upward. As the pressure regulating member 21 moves upward, the pressure regulating spring 24 It is compressed and produces elasticity, which can further buffer the water pressure and have a pressure-reducing effect. When the pressure regulating piece moves upward, the water hole 25 moves upward synchronously. At this time, the water passing area of ​​the water hole 25 gradually decreases. Therefore, the flow rate of water that can flow into the auxiliary joint 8 through the water inlet hole 22 through the water hole 25 gradually decreases. As the flow rate decreases, the water pressure in the auxiliary joint 8 further decreases, thereby ensuring that the water pressure in the auxiliary joint 8 when the water flows into the right water delivery hole 11 is normal.

[0028] When the water pressure is too low, the elasticity of the pressure regulating spring 24 will push the pressure regulating member 21 downward. As the pressure regulating member 21 moves downward, the portion of the water hole 25 that was originally hidden in the upper tube 13 is gradually exposed in the auxiliary joint 8, so that the water flow area of ​​the water hole 25 gradually increases. As the water flow area of ​​the water hole 25 increases, the flow rate of water that can flow through the water hole 25 also increases. At this time, the water flow rate is directly proportional to the water pressure. As a large amount of water flows into the auxiliary joint 8, it is ensured that there is enough subsequent water flow to push the water flow in the auxiliary joint 8 into the right water transfer hole 11. During the pushing process, it plays a role in boosting and stabilizing the pressure, ensuring that the water pressure of the water entering the right water transfer hole 11 is normal, thereby avoiding the situation where the water pressure is too low.

[0029] In summary, it can be known that when the water pressure is too high, the utility model can not only effectively buffer the water pressure through the pressure-regulating spring 24, but also can use the pressure-regulating groove 26 to guide and increase the pressure of the water flow, so that the pressure-regulating member 21 moves upward, thereby effectively reducing the water outlet area of ​​the water hole 25, and further reducing the water pressure by limiting the flow rate. When the water pressure is too low, the pressure-regulating member 21 can be moved downward and reset by the pressure-regulating spring 24, thereby increasing the water outlet area of ​​the water hole 25, and effectively increasing the water pressure by increasing the flow rate, and finally achieving the effect of automatic pressure regulation, ensuring that the water pressure of the water flow flowing from the water outlet connector 3 into the water outlet pipeline is normal, effectively avoiding the situation where the high-pressure water flow impacts the inner wall of the valve body 1, the inner wall of the pipeline or the position where the valve body 1 is connected to the pipeline for a long time, causing damage, and at the same time can effectively ensure that the water flow always has sufficient water pressure and flow to meet the actual water use needs.

[0030] An auxiliary spring 16 is provided between the limiting step 15 and the positioning structure and outside the lower end of the upper tube 13. The auxiliary spring 16 can assist in buffering the water pressure. When the water pressure is too large, the upper tube 13 will move downward along the inner wall trajectory of the embedding hole 12. When the upper tube 13 moves downward, the positioning portion 28 will squeeze the auxiliary spring 16 downward. At this time, the auxiliary spring 16 is compressed and generates elasticity, which can effectively buffer and adjust the water pressure.

[0031] A central hole 27 that is connected to the water inlet 22 is provided at the center of the lower end surface of the pressure regulating member 21. When the water flows into the water inlet 22, it will be divided into two parts. One part flows into the auxiliary joint 8 from the side through the water hole 25, and the other part flows into the auxiliary joint 8 through the central hole 27. The diameter of the central hole 27 is smaller than the diameter of the water inlet 22. Therefore, the central hole 27 can also effectively increase the pressure of the water flowing through itself through its own suddenly narrowed aperture, so that the water flow located below the pressure regulating member 21 can further push up the pressure regulating member when the pressure regulating member 21 moves upward, thereby further compressing the pressure regulating spring 24, making the elasticity of the pressure regulating spring 24 used for buffering larger, and effectively improving the pressure relief effect.

[0032] The width of the water hole 25 gradually decreases from top to bottom. The water hole 25 can, through its own shape, shape the water flow that flows into the upper part of the pressure regulating groove 26 from itself into a water flow that is wide at the top and narrow at the bottom, so that after the water flows from the water hole 25 into the upper part 26 of the pressure regulating groove, it can flow quickly along the trajectory of the pressure regulating groove 26, thereby improving the pressurization efficiency of the pressure regulating groove 26 and further buffering and regulating excessive water pressure. At the same time, when the water pressure becomes smaller, the water hole can gradually send the water flow in the water inlet hole 22 into the auxiliary joint 8 to avoid the situation where too much water is sent out at one time, resulting in excessive water pressure.

[0033] The positioning structure includes an annular positioning portion 28 provided on the outer wall of the lower portion of the upper tube 13, the upper surface of the positioning portion 28 is fitted with the lower surface of the water outlet joint 3, the left side wall of the positioning portion 28 is provided with a positioning surface, and the lower surface of the water outlet joint 3 is provided with a positioning plate 30 fitted with the positioning surface 29. The fit between the positioning plate 30 and the positioning surface 29 can play a positioning effect on the installation direction of the upper tube 13, thereby ensuring that the water inlet hole 14 of the upper tube 13 is opposite to the left water delivery hole 10, which is convenient for water to flow into the upper tube 13. When the upper tube 13 moves downward, under the action of the pressure regulating member 21, the downward movement of the upper tube 13 is not large, but is smaller than the height of the positioning plate 30, thereby ensuring that the positioning plate 30 can always play a positioning effect.

[0034] A left pressure measuring hole 31 which is connected to the left water supply hole 10 is provided on the outer wall of the rear side of the water outlet joint 3, and a right pressure measuring hole 32 which is connected to the right water supply hole 11 is provided on the side wall of the rear side of the water outlet joint 3. Pressure gauges matching the left pressure measuring hole 31 and the right pressure measuring hole 32 are provided. The left pressure measuring hole 31 can effectively test the water pressure initially entering the valve body 1, and the right pressure measuring hole 32 can effectively test the water pressure flowing from the water outlet joint 3 into the water outlet pipeline, so that users can understand the real-time water pressure and the pressure regulation effect.

Claims

1. An automatic pressure balancing valve, comprising a valve body, a water inlet joint arranged on the left side of the valve body and a water outlet joint arranged on the right side of the valve body, a valve ball matching the valve body is arranged in the valve body, a valve stem is arranged at the upper end of the valve ball, the upper end of the valve stem extends upward out of the valve body and is provided with a handle, characterized in that: A lower joint is provided on the lower surface of the left part of the water outlet joint; an auxiliary joint matching with it is screwed on the lower end of the lower joint; a water-blocking seat is provided inside the left part of the water outlet joint; the water-blocking seat divides the internal space of the water outlet joint into a left water delivery hole located on the left side of the water-blocking seat and a right water delivery hole located on the right side of the water-blocking seat; an embedded hole corresponding to the position of the water-blocking seat is provided on the lower surface of the water outlet joint, and the bottom of the embedded hole extends to the upper end of the water-blocking seat; the right end of the left water delivery hole is connected with the embedded hole; the upper end port of the lower joint encloses the lower end opening of the embedded hole; an upper tube matching with it is provided in the embedded hole; A water inlet hole communicating with the internal space of the upper tube is provided on the left outer wall of the middle part; the internal space of the upper tube communicates with the left water delivery hole through the water inlet hole; the lower end of the upper tube passes downward to the outside of the embedded hole and is provided with a positioning structure matching the lower surface of the water outlet joint; an annular limiting step is provided on the inner wall of the auxiliary joint; a set of auxiliary springs outside the lower end of the upper tube is provided between the limiting step and the positioning structure; a pressure regulating structure matching the upper tube is provided inside the upper tube; a water outlet hole is provided on the lower surface of the water outlet joint, and the internal space of the lower joint communicates with the right water delivery hole through the water outlet hole.

2. An automatic pressure balancing valve according to claim 1, characterized in that: The pressure regulating structure comprises a limit ring screwed into the pipe opening at the upper end of the upper tube; an annular upper limit portion is extended inwardly from the inner wall of the upper end of the inner hole of the limit ring; an annular lower limit portion is extended inwardly from the inner wall of the pipe opening at the lower end of the upper tube; a pressure regulating piece matching with it is arranged in the inner hole of the lower limit portion; the lower end of the pressure regulating piece is downwardly inserted into the auxiliary joint, and the auxiliary spring is sleeved on the outside of the pressure regulating piece; a water inlet hole is arranged at the center of the upper end face of the pressure regulating piece; an annular clamping portion is arranged on the outer wall of the upper end of the pressure regulating piece, and the lower surface of the clamping portion is aligned with the lower limit portion The upper surfaces are in contact with each other; a pressure-regulating spring is arranged between the lower surface of the upper limit portion and the outer edge of the upper end surface of the pressure-regulating piece; the upper end of the pressure-regulating spring is located in the limiting ring, and the lower end of the pressure-regulating spring is located in the locking portion; the inner walls on the front and rear sides of the upper part of the pressure-regulating piece are provided with symmetrical water holes; the outer walls on the front and rear sides of the pressure-regulating piece are both provided with pressure-regulating grooves that are connected with the water holes, and the width of the pressure-regulating grooves is greater than the width of the water holes; the upper part of the pressure-regulating groove is connected with the water holes, and the notch at the lower end of the pressure-regulating groove is located on the lower end surface of the pressure-regulating piece; the width of the pressure-regulating groove gradually decreases from top to bottom.

3. An automatic pressure balancing valve according to claim 2, characterized in that: A center hole communicating with the water inlet hole is arranged at the center of the lower end surface of the pressure regulating member.

4. The automatic pressure balancing valve according to claim 2, characterized in that: The width of the water through hole decreases gradually from top to bottom.

5. The automatic pressure balancing valve according to claim 1, characterized in that: The positioning structure includes a ring-shaped positioning part arranged on the outer wall of the lower part of the upper tube, and the upper surface of the positioning part is in contact with the lower surface of the water outlet joint; a positioning surface is arranged on the left side wall of the positioning part; a positioning plate in contact with the positioning surface is arranged on the lower surface of the water outlet joint; the auxiliary spring is arranged between the lower surface of the positioning part and the limiting step.

6. The automatic pressure balancing valve according to claim 1, characterized in that: A left pressure measuring hole communicating with the left water supply hole is arranged on the rear outer wall of the water outlet joint; a right pressure measuring hole communicating with the right water supply hole is arranged on the rear side wall of the water outlet joint; and pressure gauges matching with them are arranged in both the left pressure measuring hole and the right pressure measuring hole.

Images