Energy-saving water pump control valve facilitating water flow adjustment

Abstract

The application relates to the technical field of water pump control valves, in particular to an energy-saving water pump control valve facilitating water flow adjustment, which comprises a valve body, a main valve plate, an annular seat, a valve rod, a secondary valve plate, a valve cover and a diaphragm, the inner cavity of the valve body is divided into a liquid inlet cavity, a main cavity and a liquid outlet cavity, the liquid inlet cavity is communicated with the main cavity, the joint position of the liquid inlet cavity and the main cavity is formed with a valve seat, the liquid outlet cavity is arranged in communication with the main cavity, the main valve plate is installed at the position of the valve seat, the annular seat is fixed at the port of the main cavity through a primary positioning bolt, the annular seat is formed with a partition plate, the central position of the partition plate is integrally formed with a valve rod movable seat, 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 secondary valve plate is fixedly installed on the valve rod; the secondary valve plate is slowly closed, the cut-off of the control valve is realized, the change range of the water flow in the valve body is ensured to be relatively stable, and the water flow of the water pump control valve is facilitated to be controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pump control valves, and particularly relates to an energy-saving water pump control valve facilitating water flow adjustment. BACKGROUND

[0002] The water pump control valve is a valve device installed on the outlet pipeline of a water pump, used for controlling water flow pressure, flow rate, direction and other parameters when the water pump is running, so as to ensure safe, stable and efficient operation of the water pump system. It is widely applied in the fields of water supply and drainage, industrial circulating water and agricultural irrigation, and precise control of the water pump working condition is realized through automatic or manual adjustment.

[0003] The Chinese patent document with the publication number CN221762635U discloses a multifunctional water pump control valve. The scheme includes a valve body, the valve body includes a water inlet, a valve cavity and a water outlet, a control valve cover is fixedly installed on the upper end of the valve body, a control shaft is arranged in the middle of the control valve cover, a pressing plate is fixedly arranged on the outer diameter surface of the control shaft, the pressing plate is located in the interior of the control valve cover, and the control valve cover is divided into two inner cavities by the pressing plate; the water inlet and the lower end side of the control valve cover are provided with water guide pipes capable of being in communication with each other, the water outlet and the upper end of the control valve cover are also provided with water guide pipes capable of being in communication with each other, the water guide pipes are respectively connected with a particle filter and an electromagnetic valve; the bottom surface and the top surface in the interior of the control valve cover are respectively provided with stirring devices; a sealing ring is arranged at the joint of the water inlet and the valve cavity, a main valve plate is fixedly arranged on the outer diameter surface of the control shaft, the lower end of the main valve plate is in abutment with the upper end of the sealing ring, a secondary valve plate is movably arranged at the upper end of the main valve plate, the secondary valve plate is in sliding connection with the control shaft, and the upper end of the secondary valve plate is provided with an elastic assembly used for controlling the secondary valve plate.

[0004] However, in the above scheme, the structure of the main valve plate and the secondary valve plate is not conducive to slow closing of the secondary valve plate, so that the water flow in the interior of the valve body is prone to sudden change, thereby causing unstable water pressure, and the control adjustment of the control valve is not conducive. Therefore, the present application provides an energy-saving water pump control valve facilitating water flow adjustment to solve the above problems. SUMMARY

[0005] The present application aims to provide an energy-saving water pump control valve facilitating water flow adjustment to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an energy-saving water pump control valve facilitating water flow adjustment, comprising:

[0007] a valve body, an inner cavity of the valve body is divided into a liquid inlet cavity, a main cavity and a liquid outlet cavity, the liquid inlet cavity is in communication with the main cavity, and a valve seat is formed at the joint of the liquid inlet cavity and the main cavity, and the liquid outlet cavity is arranged in communication with the main cavity;

[0008] A main valve plate is installed at the position of the valve seat;

[0009] A ring-shaped seat is fixed at the port of the main cavity by a primary positioning bolt, and a partition plate is formed on the ring-shaped seat, and a valve rod movable seat is integrally formed at the center position of the partition plate;

[0010] A valve rod is movably arranged on the valve rod movable seat, and the main valve plate is movably connected with the valve rod;

[0011] A secondary valve plate is fixedly installed on the valve rod, a secondary valve plate alignment slot is formed on the main valve plate, a backflow hole is formed on the slot bottom of the secondary valve plate alignment slot, a return spring is sleeved and installed on the valve rod, and the upper and lower ends of the return spring are respectively arranged in abutment with the valve rod movable seat and the secondary valve plate;

[0012] A valve cover is fixedly installed on the ring-shaped seat by a secondary positioning bolt;

[0013] A diaphragm is a circular rubber layer with a circular hole formed in the middle, the center of the diaphragm is positioned on the valve rod, and the edge of the diaphragm is clamped and positioned between the ring-shaped seat and the valve cover.

[0014] Preferably, a buffer cavity is formed between the diaphragm and the partition plate, an upper liquid inlet hole and an upper liquid outlet hole are formed on the side wall of the buffer cavity, a secondary connection port and a tertiary connection port are formed on the outer side end of the upper liquid inlet hole and the upper liquid outlet hole respectively, a lower liquid outlet hole is formed on the side wall of the liquid inlet cavity, a lower liquid inlet hole is formed on the side wall of the liquid outlet cavity, a primary connection port and a fourth connection port are formed on the outer side end of the lower liquid outlet hole and the lower liquid inlet hole respectively, the primary connection port and the secondary connection port are connected by 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 connection port and the fourth connection port are connected by 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 fourth connection port.

[0015] Preferably, a screw rod is arranged on the upper side end of the valve rod, an annular seat is integrally formed on the side wall of the upper side end of the valve rod, a diaphragm lower pressing plate and a diaphragm upper pressing plate are sleeved and installed on the valve rod, the lower side surface of the diaphragm lower pressing plate is arranged in abutment with the annular seat, the diaphragm is clamped and positioned between the diaphragm lower pressing plate and the diaphragm upper pressing plate, and a fastener is threadedly connected on the screw rod, and the fastener is used for locking and positioning the diaphragm lower pressing plate and the diaphragm upper pressing plate.

[0016] Preferably, a first stress groove is arranged at the upper side of the center hole of the diaphragm lower pressing plate, a second stress groove is arranged at the lower side of the center hole of the diaphragm upper pressing plate, a sealing seat is integrally formed at the center of the diaphragm, the sealing seat is in the shape of an isosceles trapezoid, the size of the sealing seat is matched with the size of the first stress groove and the second stress groove, the sealing seat is made of flexible rubber material, the sealing seat is embedded in the first stress groove and the second stress groove during actual installation, and the sealing seat is in a compressed state at this time.

[0017] Preferably, the joint surface of the annular seat and the valve cover is arranged in a stepped manner, and the edge of the diaphragm is clamped and positioned in the stepped port of the annular seat and the valve cover.

[0018] Preferably, a movable groove is arranged at the lower end surface of the valve rod, a screw groove is arranged at the top surface of the movable groove, a stress column is movably arranged in the movable groove, the lower side of the screw is integrally formed with the upper end surface of the stress column, the screw passes through the screw groove, a spring groove is arranged on the side wall of the movable groove, a spring is integrally formed on the side wall of the spring groove, a positioning protrusion is integrally formed on the outer end surface of the spring, and a stress protrusion is integrally formed on the inner side surface of the spring.

[0019] Preferably, a positioning groove is arranged on the side wall of the inner hole of the auxiliary valve plate, the positioning groove is in the shape of an isosceles triangle, the cross-sectional size of the positioning protrusion is matched with the cross-sectional size of the positioning groove, the positioning protrusion is clamped in the positioning groove during actual installation, and the spring is in a reset state at this time.

[0020] Preferably, the stress column is arranged in abutment with the top surface of the movable groove during actual tightening, the inner side surface of the stress protrusion is arranged in abutment with the outer side wall of the stress column at this time, the cross section of the stress protrusion is in the shape of a right trapezoid, and the inclined edge of the stress protrusion is inclined downward towards the stress column.

[0021] Preferably, a guide groove is arranged on the inner side wall of the movable groove, a guide protrusion is integrally formed on the side wall of the stress column, and the guide protrusion is movably arranged in the guide groove during actual installation.

[0022] Preferably, an anti-skid groove is arranged on the outer side wall of the stress column, an anti-skid rubber layer is fixedly glued in the anti-skid groove, and the anti-skid rubber layer is in a compressed state during actual installation.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 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.

[0025] 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

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a half-sectional view of the present invention;

[0028] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0030] Figure 5 This is a cross-sectional view of the diaphragm of the present invention;

[0031] Figure 6 This is a schematic diagram showing the connection between the secondary valve plate and the valve stem in this invention;

[0032] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point C;

[0033] Figure 8 for Figure 6 Enlarged schematic diagram of the structure at point D;

[0034] Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point E in the middle;

[0035] Figure 10 This is a schematic diagram of the valve stem structure of the present invention;

[0036] Figure 11 This is a schematic diagram of the screw structure of the present invention;

[0037] Figure 12 for Figure 11 Enlarged schematic diagram of the structure at point F;

[0038] 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;

[0039] Figure 14 for Figure 13 Enlarged schematic diagram of the structure at point G in the middle;

[0040] Figure 15 This is a half-sectional view of the secondary valve plate of the present invention.

[0041] 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

[0042] 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.

[0043] Please see Figures 1-15 The present invention provides the following three preferred embodiments:

[0044] 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.

[0045] The diaphragm 7 and the partition plate 11 form a buffer cavity, the upper liquid inlet hole 19 and the upper liquid outlet hole 20 are arranged on the side wall of the buffer cavity, the outer side end of the upper liquid inlet hole 19 and the upper liquid outlet hole 20 is respectively formed with the second connecting port 23 and the third connecting port 24, the lower liquid outlet hole 18 is arranged on the side wall of the liquid inlet cavity 8, the lower liquid inlet hole 21 is arranged on the side wall of the liquid outlet cavity 10, the outer side end of the lower liquid outlet hole 18 and the lower liquid inlet hole 21 is respectively formed with the first connecting port 22 and the fourth connecting port 25, the first connecting port 22 and the second connecting port 23 are connected through the first pipeline, the first pipeline is sequentially provided with the first ball valve, the first filter and the first regulating check valve from the first connecting port 22 to the second connecting port 23, the third connecting port 24 and the fourth connecting port 25 are connected through the second pipeline, the second pipeline is sequentially provided with the second regulating check valve, the second filter and the second ball valve from the third connecting port 24 to the fourth connecting port 25, the energy-saving water pump control valve for conveniently adjusting water flow is formed by the valve body 1, the main valve plate 2, the annular seat 5, the valve rod 3, the auxiliary valve plate 4, the valve cover 6 and the diaphragm 7, the partition plate 11 is formed on the annular seat 5, so that the diaphragm 7 and the partition plate 11 form a buffer cavity, the buffer cavity and the liquid inlet cavity 8 are connected through the first pipeline, and the buffer cavity and the liquid outlet cavity 10 are connected through the second pipeline, so that when the water pump is running, the first ball valve is opened and the second ball valve is closed, when the fluid enters the liquid inlet cavity 8, the fluid generates upward force on the main valve plate 2 and the auxiliary valve plate 4, and at this time the fluid enters the buffer cavity through the first pipeline, so that the diaphragm 7 generates upward force, the valve rod 3 moves upward through the upward force received by the diaphragm 7, the main valve plate 2 and the auxiliary valve plate 4, when the water pump stops, the pressure of the liquid inlet cavity 8 decreases, so that the main valve plate 2 falls back and synchronously closes the first ball valve and opens the second ball valve, so that the fluid in the buffer cavity slowly flows into the liquid outlet cavity 10 through the second pipeline, so that the pressure in the buffer cavity gradually decreases, so that the diaphragm 7 slowly resets to make the auxiliary valve plate 4 slowly close, so as to realize the cutting of the control valve and ensure that the change range of water flow in the valve body is relatively stable, so as to facilitate the control of water flow of the water pump control valve, and the diaphragm 7, the main valve plate 2 and the auxiliary valve plate 4 are jointly stressed, so that when the water pressure is insufficient, the diaphragm 7, the main valve plate 2 and the auxiliary valve plate 4 are jointly stressed, so that the whole body receives greater upward force, so that the main valve plate 2 and the auxiliary valve plate 4 can be better opened.

[0046] In the embodiment two, the upper end of the valve rod 3 is provided with a screw rod 16, the upper end of the valve rod 3 is integrally formed with an annular seat 15 on the side wall, the valve rod 3 is sleeved with a lower pressing plate 13 and an upper pressing plate 14, the lower side of the lower pressing plate 13 is provided with the annular seat 15, the diaphragm 7 is clamped and positioned between the lower pressing plate 13 and the upper pressing plate 14, the screw rod 16 is threadedly connected with a fastener 17, the fastener 17 is used for locking and positioning the lower pressing plate 13 and the upper pressing plate 14, the center hole of the lower pressing plate 13 is provided with a first stress slot 37 at the upper side, the center hole of the upper pressing plate 14 is provided with a second stress slot 38 at the lower side, the diaphragm 7 is integrally formed with a sealing seat 43 at the center position, the sealing seat 43 is an annular structure with an isosceles trapezoidal cross section, the size of the sealing seat 43 is matched with the size of the first stress slot 37 and the second stress slot 38, the sealing seat 43 is made of flexible rubber material, the sealing seat 43 is embedded in the first stress slot 37 and the second stress slot 38 during actual installation, and at this time, the sealing seat 43 is in a compressed state.

[0047] The intersection surface of the annular seat 5 and the valve cover 6 is in a stepped form, the edge of the diaphragm 7 is clamped and positioned in the stepped port of the annular seat 5 and the valve cover 6, the first stress slot 37 is formed on the lower pressing plate 13, the second stress slot 38 is formed on the upper pressing plate 14, and the sealing seat 43 is formed at the center position of the diaphragm 7, the inclined surface of the first stress slot 37 and the second stress slot 38 forms an inward extrusion on the sealing seat 43, so that the sealing seat 43 better contacts with the side wall of the valve rod 3, thereby effectively improving the sealing performance of the diaphragm 7 at the installation position.

[0048] In the embodiment three, the lower end of the valve rod 3 is provided with a movable slot 26, the top surface of the movable slot 26 is provided with a screw slot, a stress column 27 is movably installed in the movable slot 26, the lower end of the screw rod 16 is integrally formed with the upper end of the stress column 27, the screw rod 16 passes through the screw slot, the side wall of the movable slot 26 is provided with a spring slot 29, the spring slot 29 is integrally formed with a spring 30 on the side wall, the outer end of the spring 30 is integrally formed with a positioning protrusion 31, and the inner side of the spring 30 is integrally formed with a stress protrusion 32.

[0049] The inner hole of the auxiliary valve plate 4 is provided with a positioning slot 28, the positioning slot 28 is an annular slot with an isosceles triangular cross section, the cross-sectional size of the positioning protrusion 31 is matched with the cross-sectional size of the positioning slot 28, the positioning protrusion 31 is clamped in the positioning slot 28 during actual installation of the auxiliary valve plate 4, and at this time, the spring 30 is in a reset state.

[0050] When the fastener 17 is actually tightened, the force receiving column 27 is arranged against the top surface of the movable slot 26, and at this time, the inner side surface of the force receiving protrusion 32 is arranged against the outer side wall of the force receiving column 27, the cross section of the force receiving protrusion 32 is a right-angled trapezoid, and the oblique edge of the force receiving protrusion 32 is inclined downward toward the force receiving column 27, and the fastener 17 is installed on the screw rod 16, so that the screw rod 16 is moved upward to move the force receiving column 27 upward to form a resisting force on the force receiving protrusion 32, so that the positioning protrusion 31 is embedded in the positioning slot 28, so that the auxiliary valve plate 4 can be locked on the valve rod 3, so that through the action of a single fastener 17, the auxiliary valve plate 4 and the diaphragm 7 can be positioned and installed synchronously, thereby effectively improving the convenience of disassembling and maintaining the auxiliary valve plate 4, the diaphragm 7 and the valve rod 3.

[0051] The inner side wall of the movable slot 26 is provided with a guide slot 33, and the side wall of the force receiving column 27 is integrally formed with a guide protrusion 34, and the force receiving column 27 is arranged in the guide slot 33 during actual installation.

[0052] The outer side wall of the force receiving column 27 is provided with an anti-skid groove, and the anti-skid rubber layer 35 is fixedly glued in the anti-skid groove, and the anti-skid rubber layer 35 is in a compressed state during actual installation.

[0053] Although the above describes the specific embodiments of the present application for the purpose of enabling those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, all applications created by utilizing the concept of the present application are within the scope of the present application.

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). 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). 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). 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 annular structure with an isosceles trapezoidal cross section. 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). At this time, the sealing seat (43) is in a compressed state. 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).

2. The energy-saving water pump control valve for easy water flow adjustment according to claim 1, 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).

3. The energy-saving water pump control valve for easy water flow adjustment according to claim 1, 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.

4. The energy-saving water pump control valve for easy water flow adjustment according to claim 3, 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).

5. The energy-saving water pump control valve for easy water flow adjustment according to claim 4, 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).

6. The energy-saving water pump control valve for easy water flow adjustment according to claim 5, 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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