Energy-saving water pump control valve capable of conveniently adjusting water flow

Abstract

The invention relates to the related technical field of water pump control valves, in particular to an energy-saving water pump control valve convenient to adjust water flow, which comprises a valve body, a main valve plate, an annular seat, a valve rod, an auxiliary valve plate, a valve cover and a diaphragm, an inner cavity of the valve body is divided into a liquid inlet cavity, a main cavity body and a liquid outlet cavity, and the liquid inlet cavity is communicated with the main cavity body; a valve seat is formed at the joint of the liquid inlet cavity and the main cavity, the liquid outlet cavity is communicated with the main cavity, the main valve plate is installed at the position of the valve seat, the annular seat is fixed to a port of the main cavity through a first-stage positioning bolt, a partition plate is formed on the annular seat, and a valve rod movable seat is integrally formed in the center of the partition plate. The valve rod is movably arranged on the valve rod movable seat, the main valve plate is movably connected with the valve rod, and the auxiliary valve plate is fixedly installed on the valve rod. The auxiliary valve plate is slowly closed, so that the control valve is cut off, it is guaranteed that the variation amplitude of the water flow in the valve body is stable, and the water flow of the water pump control valve can be conveniently controlled.

Description

Technical Field

[0001] This invention relates to the technical field of water pump control valves, specifically an energy-saving water pump control valve that facilitates water flow adjustment. Background Technology

[0002] A water pump control valve is a valve device installed on the outlet pipe of a water pump to control parameters such as water pressure, flow rate, and direction during pump operation, ensuring the safe, stable, and efficient operation of the pump system. It is widely used in water supply and drainage, industrial circulating water, and agricultural irrigation, achieving precise control of pump operating conditions through automated or manual adjustment. A Chinese patent document with publication number CN221762635U discloses a multifunctional water pump control valve. The valve body includes an inlet, a valve cavity, and an outlet. A control valve cover is fixedly installed on the upper end of the valve body. A control shaft is located in the middle of the control valve cover, and a pressure plate is fixedly installed on the outer diameter surface of the control shaft. The pressure plate is located inside the control valve cover and divides the control valve cover into two inner cavities. A water guide pipe that can communicate with the inlet and the lower side of the control valve cover is provided. The inlet and the upper part of the control valve cover are also provided with water guide pipes that can communicate with each other. The water guide pipes are connected in series with a particle filter and a solenoid valve. The bottom and top surfaces inside the control valve cover are respectively provided with stirring devices. A sealing ring is provided at the junction of the inlet and the valve cavity. A main valve plate is fixedly provided on the outer diameter surface of the control shaft. The lower end of the main valve plate abuts against the upper end of the sealing ring. A secondary valve plate is movably provided on the upper part of the main valve plate. The secondary valve plate is slidably connected to the control shaft. An elastic component for controlling the secondary valve plate is provided on the upper part of the secondary valve plate. However, in the above-mentioned scheme, the structure of the main valve plate and the auxiliary valve plate is not conducive to the slow closing of the auxiliary valve plate, which leads to sudden changes in the water flow inside the valve body, resulting in unstable water pressure and making it difficult to control and regulate the valve. Therefore, this invention proposes an energy-saving water pump control valve that is easy to adjust the water flow to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide an energy-saving water pump control valve that facilitates the adjustment of water flow, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving water pump control valve that facilitates water flow adjustment, comprising: The valve body has an inner cavity divided into an inlet chamber, a main chamber, and an outlet chamber. The inlet chamber is connected to the main chamber, and a valve seat is formed at the junction of the inlet chamber and the main chamber. The outlet chamber is connected to the main chamber. The main valve plate is mounted on the valve seat. The annular seat is fixed to the port of the main cavity by a primary positioning bolt. A partition is formed on the annular seat, and a valve stem movable seat is integrally formed at the center of the partition. A valve stem is movably mounted on a valve stem seat, and the main valve plate is movably connected to the valve stem. A secondary valve plate is fixedly mounted on the valve stem. The main valve plate has a secondary valve plate alignment groove, and a reflux hole is provided at the bottom of the secondary valve plate alignment groove. A return spring is sleeved on the valve stem, and the upper and lower ends of the return spring abut against the valve stem movable seat and the secondary valve plate, respectively. The valve cover is fixedly mounted on the annular seat by a secondary positioning bolt; The diaphragm is a circular rubber layer with a central hole. The center of the diaphragm is positioned on the valve stem, and the edge of the diaphragm is clamped and positioned between the annular seat and the valve cover.

[0005] Preferably, the diaphragm and the partition plate enclose a buffer cavity. An upper inlet and an upper outlet are provided on the sidewall of the buffer cavity. The outer ends of the upper inlet and outlet are respectively formed with a secondary connection port and a tertiary connection port. A lower outlet is provided on the sidewall of the inlet cavity, and a lower inlet is provided on the sidewall of the outlet cavity. The outer ends of the lower outlet and inlet are respectively formed with a primary connection port and a quaternary connection port. The primary and secondary connection ports are connected via a primary pipeline. A first ball valve, a first filter, and a first regulating check valve are sequentially arranged on the primary pipeline from the primary connection port to the secondary connection port. The tertiary and quaternary connection ports are connected via a secondary pipeline. A second regulating check valve, a second filter, and a second ball valve are sequentially arranged on the secondary pipeline from the tertiary connection port to the quaternary connection port.

[0006] Preferably, a screw is provided at the upper end of the valve stem, and an annular seat is integrally formed on the side wall of the upper end of the valve stem. A lower diaphragm pressure plate and an upper diaphragm pressure plate are sleeved on the valve stem. The lower side of the lower diaphragm pressure plate abuts against the annular seat. The diaphragm is clamped and positioned between the lower diaphragm pressure plate and the upper diaphragm pressure plate. A fastener is threaded onto the screw, and the fastener is used to lock and position the lower diaphragm pressure plate and the upper diaphragm pressure plate.

[0007] Preferably, a primary force-bearing groove is formed at the upper side of the center hole of the lower diaphragm pressure plate, and a secondary force-bearing groove is formed at the lower side of the center hole of the upper diaphragm pressure plate. A sealing seat is integrally formed at the center of the diaphragm. The sealing seat is an annular structure with an isosceles trapezoidal cross-section, and the size of the sealing seat is matched with the size of the primary and secondary force-bearing grooves. The sealing seat is cast from flexible rubber material. During actual installation, the sealing seat is embedded in the primary and secondary force-bearing grooves, and at this time, the sealing seat is in a compressed state.

[0008] Preferably, the interface between the annular seat and the valve cover is stepped, and the edge of the diaphragm is clamped and positioned in the stepped opening on the annular seat and the valve cover.

[0009] Preferably, the lower end face of the valve stem is provided with a movable groove, the top surface of the movable groove is provided with a screw groove, a force-bearing column is movably installed in the movable groove, the lower end of the screw is integrally formed with the upper end face of the force-bearing column, and the screw passes through the screw groove. A spring plate groove is provided on the side wall of the movable groove, a spring plate is integrally formed on the side wall of the spring plate groove, a positioning protrusion is integrally formed on the outer end face of the spring plate, and a force-bearing protrusion is integrally formed on the inner side face of the spring plate.

[0010] Preferably, a positioning groove is provided on the inner sidewall of the secondary valve plate. The positioning groove is an annular groove with an isosceles triangular cross-section. The cross-sectional dimensions of the positioning protrusion match the cross-sectional dimensions of the positioning groove. When the secondary valve plate is actually installed, the positioning protrusion is engaged in the positioning groove, and at this time, the spring is in the reset state.

[0011] Preferably, when the fastener is actually tightened, the force-bearing column abuts against the top surface of the movable groove, and at this time, the inner side of the force-bearing protrusion abuts against the outer side wall of the force-bearing column. The cross-section of the force-bearing protrusion is a right trapezoid, and the hypotenuse of the force-bearing protrusion is inclined downward toward the force-bearing column.

[0012] Preferably, a guide groove is provided on the inner side wall of the movable groove, and a guide protrusion is integrally formed on the side wall of the force-bearing column. During actual installation, the guide protrusion is movably disposed in the guide groove.

[0013] Preferably, an anti-slip groove is provided on the outer wall of the load-bearing column, and an anti-slip rubber layer is fixedly bonded in the anti-slip groove. When the load-bearing column is actually installed, the anti-slip rubber layer is in a compressed state.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. An energy-saving water pump control valve, consisting of a valve body, main valve plate, annular seat, valve stem, auxiliary valve plate, valve cover, and diaphragm, is designed to facilitate water flow regulation. A baffle plate is formed on the annular seat, creating a buffer chamber between the diaphragm and the baffle plate. The buffer chamber and inlet chamber are connected via a primary pipeline, and the buffer chamber and outlet chamber are connected via a secondary pipeline. When the water pump is running, opening the first ball valve and closing the second ball valve allows fluid to enter the inlet chamber. This fluid exerts an upward force on the main valve plate and auxiliary valve plate. Simultaneously, the fluid enters the buffer chamber through the primary pipeline, further exerting an upward force on the diaphragm. The combined upward force on the diaphragm, main valve plate, and auxiliary valve plate causes the valve stem to move upward. When the water pump stops, the pressure in the inlet chamber decreases, causing the main valve plate to fall back and simultaneously close the first ball valve and open the second ball valve. This allows the fluid in the buffer chamber to slowly flow into the outlet chamber through the secondary pipeline, gradually reducing the pressure in the buffer chamber. This causes the diaphragm to slowly reset, allowing the secondary valve plate to slowly close, thus achieving the shut-off of the control valve and ensuring a relatively stable change in the water flow rate inside the valve body. This facilitates the control of the water flow rate of the water pump control valve. Furthermore, the diaphragm, main valve plate, and secondary valve plate share the force. Therefore, when the water pressure is insufficient, the diaphragm, main valve plate, and secondary valve plate share the force, resulting in a greater upward force, allowing the main valve plate and secondary valve plate to open more effectively. 2. By creating a primary force-bearing groove on the lower pressure plate of the diaphragm and a secondary force-bearing groove on the upper pressure plate of the diaphragm, and forming a sealing seat at the center of the diaphragm, the inclined surfaces of the primary and secondary force-bearing grooves create an inward squeezing effect on the sealing seat, thereby allowing the sealing seat to better contact the valve stem sidewall and effectively improving the sealing performance at the diaphragm installation position. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a half-sectional view of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is a cross-sectional view of the diaphragm of the present invention; Figure 6 This is a schematic diagram showing the connection between the secondary valve plate and the valve stem in this invention; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C; Figure 8 for Figure 6Enlarged schematic diagram of the structure at point D; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point E in the middle; Figure 10 This is a schematic diagram of the valve stem structure of the present invention; Figure 11 This is a schematic diagram of the screw structure of the present invention; Figure 12 for Figure 11 Enlarged schematic diagram of the structure at point F; Figure 13 This is a half-sectional view of the lower pressure plate and the upper pressure plate of the diaphragm of the present invention; Figure 14 for Figure 13 Enlarged schematic diagram of the structure at point G in the middle; Figure 15 This is a half-sectional view of the secondary valve plate of the present invention.

[0016] In the diagram: 1. Valve body; 2. Main valve plate; 3. Valve stem; 4. Sub-valve plate; 5. Annular seat; 6. Valve cover; 7. Diaphragm; 8. Inlet chamber; 9. Main chamber; 10. Outlet chamber; 11. Partition plate; 12. Sub-valve plate alignment groove; 13. Diaphragm lower pressure plate; 14. Diaphragm upper pressure plate; 15. Annular seat; 16. Screw; 17. Fastener; 18. Lower drain hole; 19. Upper inlet hole; 20. Upper drain hole; 21. Lower inlet hole; 22. Primary connection port. 23. Secondary connection port 24. Tertiary connection port 25. Quaternary connection port 26. Movable groove 27. Force-bearing column 28. Positioning groove 29. Spring plate groove 30. Spring plate 31. Positioning protrusion 32. Force-bearing protrusion 33. Guide groove 34. Guide protrusion 35. Anti-slip rubber layer 35. Primary force-bearing groove 37. Secondary force-bearing groove 38. Valve seat 39. Valve stem movable seat 40. Return hole 41. Return spring 42. Sealing seat 43. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-15 The present invention provides the following three preferred embodiments: Example 1: An energy-saving water pump control valve for easy water flow regulation includes a valve body 1, a main valve plate 2, an annular seat 5, a valve stem 3, a secondary valve plate 4, a valve cover 6, and a diaphragm 7. The inner cavity of the valve body 1 is divided into an inlet chamber 8, a main chamber 9, and an outlet chamber 10. The inlet chamber 8 is connected to the main chamber 9, and a valve seat 39 is formed at the junction of the inlet chamber 8 and the main chamber 9. The outlet chamber 10 is connected to the main chamber 9. The main valve plate 2 is installed at the position of the valve seat 39. The annular seat 5 is fixed to the port of the main chamber 9 by a primary positioning bolt. A partition 11 is formed on the annular seat 5, and a valve stem movable seat 40 is integrally formed at the center of the partition 11. The valve stem 3 is movably mounted on the valve stem movable seat 40. The main valve plate 2 and the valve stem 3 are movably connected. The auxiliary valve plate 4 is fixedly mounted on the valve stem 3. The main valve plate 2 has an auxiliary valve plate alignment groove 12. The bottom of the auxiliary valve plate alignment groove 12 has a reflux hole 41. A return spring 42 is sleeved on the valve stem 3. The upper and lower ends of the return spring 42 abut against the valve stem movable seat 40 and the auxiliary valve plate 4, respectively. The valve cover 6 is fixedly mounted on the annular seat 5 by a secondary positioning bolt. The diaphragm 7 is a circular rubber layer with a circular hole in the middle. The center of the diaphragm 7 is positioned on the valve stem 3, and the edge of the diaphragm 7 is clamped and positioned between the annular seat 5 and the valve cover 6.

[0019] A buffer chamber is formed between the diaphragm 7 and the partition 11. An upper inlet hole 19 and an upper outlet hole 20 are provided on the side wall of the buffer chamber. Secondary connection ports 23 and tertiary connection ports 24 are formed on the outer ends of the upper inlet hole 19 and the upper outlet hole 20, respectively. A lower outlet hole 18 is provided on the side wall of the inlet chamber 8, and a lower inlet hole 21 is provided on the side wall of the outlet chamber 10. Primary connection ports 22 and tertiary connection ports 25 are formed on the outer ends of the lower outlet hole 18 and the lower inlet hole 21, respectively. The primary connection port 22 and the secondary connection port 23 are connected by a primary pipeline. The primary pipeline runs from the primary connection port 22 to the secondary connection port 25. A first ball valve, a first filter, and a first regulating check valve are sequentially arranged in the direction of connection port 23. The tertiary connection port 24 and the quaternary connection port 25 are connected by a secondary pipeline. A second regulating check valve, a second filter, and a second ball valve are sequentially arranged in the direction from the tertiary connection port 24 to the quaternary connection port 25 on the secondary pipeline. An energy-saving water pump control valve that facilitates water flow regulation is provided by assembling a valve body 1, a main valve plate 2, an annular seat 5, a valve stem 3, a secondary valve plate 4, a valve cover 6, and a diaphragm 7. A baffle 11 is formed on the annular seat 5, so that the diaphragm 7 and the baffle 11 enclose a buffer chamber, and the flow is transmitted through the primary pipeline. The system connects the buffer chamber and the inlet chamber 8, and connects the buffer chamber and the outlet chamber 10 via a secondary pipeline. When the pump is running, opening the first ball valve and closing the second ball valve allows fluid to enter the inlet chamber 8. This fluid exerts an upward force on the main valve plate 2 and the auxiliary valve plate 4. Simultaneously, the fluid enters the buffer chamber through the primary pipeline, exerting an upward force on the diaphragm 7. This upward force on the diaphragm 7, main valve plate 2, and auxiliary valve plate 4 causes the valve stem 3 to move upward. When the pump stops, the pressure in the inlet chamber 8 decreases, causing the main valve plate 2 to fall back, simultaneously closing the first ball valve and opening the second ball valve. The valve allows the fluid in the buffer chamber to slowly flow into the liquid chamber 10 through the secondary pipeline, thereby gradually reducing the pressure in the buffer chamber. This causes the diaphragm 7 to slowly reset, allowing the auxiliary valve plate 4 to slowly close, thus achieving the shut-off of the control valve and ensuring a relatively stable change in the water flow rate inside the valve body. This facilitates the control of the water flow rate of the water pump control valve. Furthermore, the diaphragm 7, the main valve plate 2, and the auxiliary valve plate 4 share the force. Therefore, when the water pressure is insufficient, the diaphragm 7, the main valve plate 2, and the auxiliary valve plate 4 will experience a greater upward force, allowing the main valve plate 2 and the auxiliary valve plate 4 to open more effectively.

[0020] Example 2: Based on Example 1, a screw 16 is provided on the upper end of the valve stem 3, and an annular seat 15 is integrally formed on the upper side wall of the valve stem 3. A lower diaphragm pressure plate 13 and an upper diaphragm pressure plate 14 are sleeved on the valve stem 3. The lower side of the lower diaphragm pressure plate 13 abuts against the annular seat 15. The diaphragm 7 is clamped and positioned between the lower diaphragm pressure plate 13 and the upper diaphragm pressure plate 14. A fastener 17 is threaded onto the screw 16. The fastener 17 is used to lock and position the lower diaphragm pressure plate 13 and the upper diaphragm pressure plate 14. A central hole of the lower diaphragm pressure plate 13 is provided near the upper side. The primary force-bearing groove 37 and the secondary force-bearing groove 38 are provided at the lower side of the center hole of the diaphragm upper pressure plate 14. A sealing seat 43 is integrally formed at the center of the diaphragm 7. The sealing seat 43 is a ring structure with an isosceles trapezoidal cross section. The size of the sealing seat 43 is matched with the size of the primary force-bearing groove 37 and the secondary force-bearing groove 38. The sealing seat 43 is made of flexible rubber material. When the diaphragm lower pressure plate 13 and the diaphragm upper pressure plate 14 are actually installed, the sealing seat 43 is embedded in the primary force-bearing groove 37 and the secondary force-bearing groove 38. At this time, the sealing seat 43 is in a compressed state.

[0021] The interface between the annular seat 5 and the valve cover 6 is stepped. The edge of the diaphragm 7 is clamped and positioned in the stepped openings on the annular seat 5 and the valve cover 6. A primary force groove 37 is opened on the lower pressure plate 13 of the diaphragm, and a secondary force groove 38 is opened on the upper pressure plate 14 of the diaphragm. A sealing seat 43 is formed at the center of the diaphragm 7. The inclined surfaces of the primary force groove 37 and the secondary force groove 38 form an inward squeezing force on the sealing seat 43, thereby allowing the sealing seat 43 to better contact the side wall of the valve stem 3, thus effectively improving the sealing performance at the installation position of the diaphragm 7.

[0022] Example 3: Based on Example 2, a movable groove 26 is provided on the lower end face of the valve stem 3. A screw groove is provided through the top surface of the movable groove 26. A force-bearing column 27 is movably installed in the movable groove 26. The lower end of the screw 16 is integrally formed with the upper end face of the force-bearing column 27, and the screw 16 passes through the screw groove. A spring plate groove 29 is provided on the side wall of the movable groove 26. A spring plate 30 is integrally formed on the side wall of the spring plate groove 29. A positioning protrusion 31 is integrally formed on the outer end face of the spring plate 30, and a force-bearing protrusion 32 is integrally formed on the inner side face of the spring plate 30.

[0023] A positioning groove 28 is provided on the inner side wall of the secondary valve plate 4. The positioning groove 28 is an annular groove with an isosceles triangle cross section. The cross-sectional dimensions of the positioning protrusion 31 match the cross-sectional dimensions of the positioning groove 28. When the secondary valve plate 4 is actually installed, the positioning protrusion 31 is engaged in the positioning groove 28, and at this time, the spring piece 30 is in the reset state.

[0024] When the fastener 17 is actually tightened, the force-bearing column 27 abuts against the top surface of the movable groove 26. At this time, the inner side of the force-bearing protrusion 32 abuts against the outer wall of the force-bearing column 27. The cross-section of the force-bearing protrusion 32 is a right trapezoid, and the hypotenuse of the force-bearing protrusion 32 is inclined downward toward the force-bearing column 27. By installing the fastener 17 on the screw 16, it can simultaneously position the diaphragm lower pressure plate 13 and the diaphragm upper pressure plate 14, and drive the screw 16 to move upward, so that the force-bearing column 27 is forced to move upward, so as to form a supporting force on the force-bearing protrusion 32. This allows the positioning protrusion 31 to be embedded into the positioning groove 28, so that the secondary valve plate 4 can be locked onto the valve stem 3. Thus, through the action of a single fastener 17, the secondary valve plate 4 and the diaphragm 7 can be positioned and installed simultaneously, thereby effectively improving the convenience of disassembly and maintenance of the secondary valve plate 4, the diaphragm 7, and the valve stem 3.

[0025] A guide groove 33 is provided on the inner side wall of the movable groove 26, and a guide protrusion 34 is integrally formed on the side wall of the force-bearing column 27. When the force-bearing column 27 is actually installed, the guide protrusion 34 is movably set in the guide groove 33.

[0026] Anti-slip grooves are provided on the outer side wall of the load-bearing column 27, and an anti-slip rubber layer 35 is fixedly glued in the anti-slip grooves. When the load-bearing column 27 is actually installed, the anti-slip rubber layer 35 is in a compressed state.

[0027] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. An energy-saving water pump control valve that facilitates water flow adjustment, characterized in that: include: The valve body (1) has an inner cavity divided into an inlet chamber (8), a main cavity (9) and an outlet chamber (10). The inlet chamber (8) is connected to the main cavity (9), and a valve seat (39) is formed at the junction of the inlet chamber (8) and the main cavity (9). The outlet chamber (10) is connected to the main cavity (9). The main valve plate (2) is installed at the position of the valve seat (39); The annular seat (5) is fixed to the port of the main cavity (9) by a primary positioning bolt. A partition (11) is formed on the annular seat (5), and a valve stem movable seat (40) is integrally formed at the center of the partition (11). The valve stem (3) is movably mounted on the valve stem movable seat (40), and the main valve plate (2) and the valve stem (3) are movably connected; A secondary valve plate (4) is fixedly installed on the valve stem (3). A secondary valve plate alignment groove (12) is provided on the main valve plate (2). A return hole (41) is provided at the bottom of the groove of the secondary valve plate alignment groove (12). A return spring (42) is sleeved on the valve stem (3). The upper and lower ends of the return spring (42) are respectively abutted against the valve stem movable seat (40) and the secondary valve plate (4). Valve cover (6), which is fixedly mounted on the annular seat (5) by secondary positioning bolts; The diaphragm (7) is a circular rubber layer with a hole in the middle. The center of the diaphragm (7) is positioned on the valve stem (3), and the edge of the diaphragm (7) is clamped and positioned between the annular seat (5) and the valve cover (6).

2. The energy-saving water pump control valve for easy water flow adjustment according to claim 1, characterized in that: The membrane (7) and the partition (11) enclose a buffer cavity. An upper inlet hole (19) and an upper outlet hole (20) are provided on the side wall of the buffer cavity. The outer ends of the upper inlet hole (19) and the upper outlet hole (20) are respectively formed with a secondary connection port (23) and a tertiary connection port (24). A lower outlet hole (18) is provided on the side wall of the inlet cavity (8). A lower inlet hole (21) is provided on the side wall of the outlet cavity (10). The outer ends of the lower outlet hole (18) and the lower inlet hole (21) are respectively formed with a primary connection port. The first-level connection port (22) and the second-level connection port (23) are connected by a first-level pipeline. A first ball valve, a first filter and a first regulating check valve are sequentially arranged on the first-level pipeline from the first-level connection port (22) to the second-level connection port (23). The third-level connection port (24) and the fourth-level connection port (25) are connected by a second-level pipeline. A second regulating check valve, a second filter and a second ball valve are sequentially arranged on the second-level pipeline from the third-level connection port (24) to the fourth-level connection port (25).

3. The energy-saving water pump control valve for easy water flow adjustment according to claim 2, characterized in that: A screw (16) is provided on the upper end of the valve stem (3). An annular seat (15) is integrally formed on the upper side wall of the valve stem (3). A diaphragm lower pressure plate (13) and a diaphragm upper pressure plate (14) are sleeved on the valve stem (3). The lower side of the diaphragm lower pressure plate (13) abuts against the annular seat (15). The diaphragm (7) is clamped and positioned between the diaphragm lower pressure plate (13) and the diaphragm upper pressure plate (14). A fastener (17) is threaded on the screw (16). The fastener (17) is used to lock and position the diaphragm lower pressure plate (13) and the diaphragm upper pressure plate (14).

4. The energy-saving water pump control valve for easy water flow adjustment according to claim 3, characterized in that: The lower diaphragm pressure plate (13) has a primary force groove (37) at the upper side of the center hole, and the upper diaphragm pressure plate (14) has a secondary force groove (38) at the lower side of the center hole. The diaphragm (7) has an integrally formed sealing seat (43) at the center. The sealing seat (43) is an isosceles trapezoidal ring structure, and the size of the sealing seat (43) matches the size of the primary force groove (37) and the secondary force groove (38). The sealing seat (43) is made of flexible rubber. When the lower diaphragm pressure plate (13) and the upper diaphragm pressure plate (14) are actually installed, the sealing seat (43) is embedded in the primary force groove (37) and the secondary force groove (38), and at this time, the sealing seat (43) is in a compressed state.

5. The energy-saving water pump control valve for easy water flow adjustment according to claim 4, characterized in that: The interface between the annular seat (5) and the valve cover (6) is stepped, and the edge of the diaphragm (7) is clamped and positioned in the stepped opening on the annular seat (5) and the valve cover (6).

6. The energy-saving water pump control valve for easy water flow adjustment according to claim 3, characterized in that: The lower end face of the valve stem (3) is provided with a movable groove (26), and the top surface of the movable groove (26) is provided with a screw groove. A force-bearing column (27) is movably installed in the movable groove (26). The lower end of the screw (16) is integrally formed with the upper end face of the force-bearing column (27), and the screw (16) passes through the screw groove. A spring plate groove (29) is provided on the side wall of the movable groove (26), and a spring plate (30) is integrally formed on the side wall of the spring plate groove (29). A positioning protrusion (31) is integrally formed on the outer end face of the spring plate (30), and a force-bearing protrusion (32) is integrally formed on the inner side face of the spring plate (30).

7. The energy-saving water pump control valve for easy water flow adjustment according to claim 6, characterized in that: The inner wall of the secondary valve plate (4) is provided with a positioning groove (28). The positioning groove (28) is an annular groove with an isosceles triangle cross section. The cross-sectional dimensions of the positioning protrusion (31) match the cross-sectional dimensions of the positioning groove (28). When the secondary valve plate (4) is actually installed, the positioning protrusion (31) is engaged in the positioning groove (28), and at this time, the spring piece (30) is in the reset state.

8. The energy-saving water pump control valve for easy water flow adjustment according to claim 7, characterized in that: When the fastener (17) is actually tightened, the top surface of the force-bearing column (27) abuts against the movable groove (26), and at this time, the inner side of the force-bearing protrusion (32) abuts against the outer side wall of the force-bearing column (27). The cross section of the force-bearing protrusion (32) is a right trapezoid, and the hypotenuse of the force-bearing protrusion (32) is inclined downward toward the force-bearing column (27).

9. The energy-saving water pump control valve for easy water flow adjustment according to claim 8, characterized in that: The inner sidewall of the movable groove (26) is provided with a guide groove (33), and the sidewall of the force-bearing column (27) is integrally formed with a guide protrusion (34). When the force-bearing column (27) is actually installed, the guide protrusion (34) is movably arranged in the guide groove (33).

10. An energy-saving water pump control valve for easy adjustment of water flow rate according to claim 9, characterized in that: The outer wall of the load-bearing column (27) is provided with an anti-slip groove, and an anti-slip rubber layer (35) is fixedly glued in the anti-slip groove. When the load-bearing column (27) is actually installed, the anti-slip rubber layer (35) is in a compressed state.

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