A protective component and a flow regulating valve

Abstract

This invention relates to the field of regulating valves, specifically a protective component and a flow regulating valve, including a mating seat, a protective sleeve, a cleaning component, and a rotation control component. The mating seat and the protective sleeve are both inserted into the valve body, which has a regulating valve chamber. A protective sleeve with a first pressure reduction hole, a second pressure reduction hole, and a bottom pressure reduction hole is provided in the regulating valve chamber of the valve body, and works in conjunction with a pressure reduction cover with a third pressure reduction hole to perform multi-stage pressure reduction on the liquid flowing from the inlet tank to the outlet tank, avoiding cavitation problems caused by high-pressure liquids and affecting the stability of the device. At the same time, the arc-shaped spherical protective cover can relieve pressure and divert fluid during pressure reduction operations. In addition, the cleaning component and the rotation control component work together to enhance pressure relief while filtering the fluid fed into the inlet tank, and are easy to maintain and operate.

Description

Technical Field

[0001] This invention relates to the field of control valves, specifically a protective component and a flow control valve. Background Technology

[0002] A flow control valve is a valve specifically designed to control the flow rate of fluids (liquid, gas, or steam). It achieves precise flow rate regulation by changing the flow cross-sectional area inside the valve.

[0003] The invention disclosed in publication number CN109630704B discloses a regulating valve for regulating the flow rate of process fluid in process production equipment. The regulating valve includes a valve body with a valve seat and a valve piston connected to a valve stem. This design optimizes the anti-rotation stability of the flange and valve stem. However, when used in high-pressure fluid pipelines, the regulating valve will suffer from cavitation problems due to the high pressure impact of the fluid during opening and closing, which will affect the service life of the regulating valve. Moreover, when there are certain contaminants in the fluid, the entire valve needs to be disassembled and maintained after a certain period of use, which is time-consuming, labor-intensive, and inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide a protective component and a flow regulating valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective component, comprising:

[0006] The valve body includes a mating seat and a protective sleeve core, both of which are inserted into the valve body. The valve body has an adjustable valve chamber. The valve body is sealed with a sealing top cover and a sealing bottom cover at the upper and lower ends of the adjustable valve chamber, respectively. The upper end of the mating seat is inserted and fixed to the lower end of the sealing top cover.

[0007] The lower end of the mating seat is provided with a pressure reducing cover, the protective sleeve core is fitted with the pressure reducing cover, the center of the sealing top cover is vertically inserted with a valve stem, the lower end of the protective sleeve core is horizontally provided with a sealing insert plate, the lower end of the valve stem passes through the mating seat and is inserted into the center of the sealing insert plate, and the outer periphery of the protective sleeve core is fitted with a spherical filter cover.

[0008] The cleaning assembly includes an auxiliary flushing disc and a cleaning filter cartridge, wherein the cleaning filter cartridge is movably inserted into one side of the valve body, and one side of the cleaning filter cartridge is fitted to the spherical filter cover.

[0009] A rotation control assembly, comprising a driven gear ring and a control gear, wherein the driven gear ring is located at the upper end of the spherical filter cover and the control gear is located on one side of the upper end of the valve body.

[0010] Preferably, the valve body has an inflow groove and an outflow groove on both sides that are connected to the regulating valve chamber. The inflow groove and the outflow groove are staggered vertically on one side of the regulating valve chamber. The upper end of the protective sleeve core is provided with a spherical protective cover, and the spherical protective cover of the protective sleeve core is correspondingly set with the inflow groove.

[0011] Preferably, the lower end of the protective sleeve core is fitted with a mounting base through a sealing ring. The mounting base is fixedly inserted into the regulating valve cavity, and the mounting base is located between the inflow groove and the outflow groove, which connect to the regulating valve cavity.

[0012] Preferably, the sealing insert is located inside the protective sleeve core at the mounting base position, the upper end of the mounting base is in contact with the lower end of the spherical protective cover, the protective sleeve core has several bottom pressure reduction holes through the lower end of the mounting base, and the upper end of the protective sleeve core is in contact with the lower end of the mating seat.

[0013] Preferably, the spherical protective cover and the protective sleeve core are respectively provided with a plurality of first pressure reducing holes and a plurality of second pressure reducing holes on the side near the spherical protective cover, and the spherical filter cover is fitted onto the spherical protective cover.

[0014] Preferably, the upper end of the sealing plate has a recessed groove at its center, the lower end of the pressure reducing cover is inserted into the recessed groove, a sealing hole is provided through the center of the recessed groove, the lower end of the valve stem has a sealing end, the sealing end passes through the lower end of the pressure reducing cover and is inserted into the sealing hole, the side of the sealing end that contacts the sealing hole is a conical surface, and the upper end of the pressure reducing cover has several third pressure reducing holes.

[0015] Preferably, the valve body has a cleaning mounting seat on the side near the spherical filter cover and away from the inflow channel. The cleaning mounting seat has a movable slot, and the cleaning filter cartridge is movably inserted into the movable slot. The lower end of one side of the movable slot is connected to the outflow channel to form a cleaning flow channel. A transition window is provided on one side of the cleaning filter cartridge. Several sets of connecting rods are horizontally and symmetrically arranged in the transition window. A second filter screen is inserted into the inner side of the transition window and fitted with several sets of connecting rods. Sealing rings are sleeved on both sides of the cleaning filter cartridge near the transition window. The width of the sealing rings and the transition window is greater than the diameter of the cleaning flow channel. A flange assembly plate is sealed and fixed on one side of the cleaning mounting seat by several bolts. A control screw sleeve is inserted into the center of the flange assembly plate through a sealing bearing. A control screw is horizontally provided at the center of the side of the cleaning filter cartridge away from the spherical filter cover, and the control screw is threaded through the control screw sleeve.

[0016] Preferably, a transfer sleeve is vertically provided at the lower center of the mating seat. The transfer sleeve is sleeved with a valve stem and a sealing end. The diameter of the valve stem is smaller than the diameter of the sealing end. A transfer groove is provided between the valve stem and the inner wall of the transfer sleeve. An independent liquid inlet groove is provided on one side of the mating seat, connecting the transfer groove and the regulating valve chamber. A clearance groove is provided at the lower end of one side of the pressure reducing cover. An auxiliary flushing plate is provided on one side of the transfer sleeve, connecting the transfer groove and penetrating the clearance groove. Several backflush holes are provided through the auxiliary flushing plate.

[0017] Preferably, the upper end of the protective sleeve core is provided with a driven gear ring horizontally, a first gear groove is horizontally opened on the side of the valve body near the driven gear ring, a second gear groove is horizontally opened on the upper end of the valve body near the first gear groove, a synchronous shaft is rotatably inserted between the first gear groove and the second gear groove through a bearing, a first bevel gear and a control gear are respectively provided on the upper and lower sides of the synchronous shaft, one side of the control gear is meshed with the driven gear ring, a third gear groove is vertically opened on the side of the valve body near the second gear groove, a rotation control rod is horizontally inserted into the third gear groove on one side of the valve body, a second bevel gear is sleeved on the side of the rotation control rod placed in the third gear groove, and one side of the second bevel gear is meshed with the first bevel gear.

[0018] A flow regulating valve having the aforementioned protective components.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] A protective sleeve with a first pressure reduction hole, a second pressure reduction hole, and a bottom pressure reduction hole is installed in the regulating valve chamber of the valve body, and a pressure reduction cover with a third pressure reduction hole is used to perform multi-stage pressure reduction on the liquid flowing from the inlet tank to the outlet tank, so as to avoid cavitation problems caused by high pressure liquid, which would affect the stability of the device. At the same time, the arc-shaped spherical protective cover can relieve pressure and divert fluid during pressure reduction operation. In addition, with the cooperation of the cleaning component and the rotation control component, pressure relief can be enhanced while the fluid fed into the inlet tank can be filtered, which is convenient for maintenance and easy to operate. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the regulating valve cavity of the present invention;

[0023] Figure 3 This is a schematic diagram of a partial cross-section of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of part A;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of part B;

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of part C;

[0027] Figure 7 This is a schematic diagram of the pressure-reducing cover installation structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the protective sleeve core and the spherical filter cover of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the cleaning filter cartridge 27 of the present invention.

[0030] In the diagram: 1. Valve body; 2. Regulating valve chamber; 3. Inflow groove; 4. Outflow groove; 5. Sealing top cover; 6. Sealing bottom cover; 7. Fitting seat; 8. Valve stem; 9. Mounting base; 10. Spherical protective cover; 12. Protective sleeve core; 13. Spherical filter cover; 14. Pressure reducing cover; 15. Sealing insert plate; 16. Sealing hole; 17. Sealing end; 18. Transfer sleeve; 19. Transfer groove; 20. Driven gear ring; 21. Control gear; 22. First bevel gear; 23. Second bevel gear; 24. Rotation control lever; 25. Cleaning mounting seat; 26. Movable slot; 27. Cleaning filter cartridge; 28. Cleaning flow channel; 29. ​​Transfer window; 30. Sealing band ring; 31. Second filter screen; 32. Flange assembly plate; 33. Control screw sleeve; 34. Control screw; 35. Bottom pressure reducing hole; 36. Auxiliary flushing plate; 37. Independent liquid inlet groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0032] Please see Figures 1-9 The present invention provides the following technical solutions:

[0033] Example 1: A protective component includes a mating seat 7 and a protective sleeve 12. Both the mating seat 7 and the protective sleeve 12 are inserted into a valve body 1. A regulating valve chamber 2 is provided inside the valve body 1. A sealing top cover 5 and a sealing bottom cover 6 are respectively sealed and inserted into the upper and lower ends of the valve body 1 located in the regulating valve chamber 2. The upper end of the mating seat 7 is inserted and fixed to the lower end of the sealing top cover 5. An inflow groove 3 and an outflow groove 4 are respectively provided on both sides of the valve body 1, connecting to the regulating valve chamber 2. The inflow groove 3 and the outflow groove 4 are staggered vertically on one side connecting to the regulating valve chamber 2. A spherical protective cover 10 is provided at the upper end of the protective sleeve 12. The spherical protective cover 10 of the core 12 is correspondingly set with the inflow groove 3. The lower end of the protective sleeve core 12 is fitted with a mounting base 9 through a sealing ring. The mounting base 9 is fixedly inserted into the regulating valve cavity 2, and the mounting base 9 is located between the inflow groove 3 and the outflow groove 4 connecting the regulating valve cavity 2. When the liquid flows, it enters the upper part of the regulating valve cavity 2 through the inflow groove 3 and flows out of the outflow groove 4 from the lower part of the regulating valve cavity 2. The mating seat 7 can be fixed and sealed by the sealing top cover 5 and inserted into the upper part of the regulating valve cavity 2. The protective sleeve core 12 is inserted into the lower part of the regulating valve cavity 2 from the lower part of the valve body 1 through the mounting base 9.

[0034] A valve stem 8 is vertically inserted into the center of the sealing top cover 5. A sealing plate 15 is horizontally installed at the lower end of the protective sleeve core 12. The lower end of the valve stem 8 passes through the mating seat 7 and is inserted into the center of the sealing plate 15. A spherical filter cover 13 is fitted around the outer periphery of the protective sleeve core 12. The sealing plate 15 is located inside the protective sleeve core 12 at the position of the mounting base 9. The upper end of the mounting base 9 contacts the lower end of the spherical protective cover 10. Several bottom openings are provided through the lower end of the mounting base 9 in the protective sleeve core 12. The pressure reducing hole 35, the upper end of the protective sleeve core 12 is in contact with the lower end of the mating seat 7, and the spherical protective cover 10 and the protective sleeve core 12 are respectively provided with a number of first pressure reducing holes and a number of second pressure reducing holes on the side of the spherical protective cover 10. The spherical filter cover 13 is sleeved on the spherical protective cover 10. When the liquid flows in the regulating valve chamber 2, it must first pass through the first pressure reducing hole of the spherical protective cover 10 and then through the second pressure reducing hole of the protective sleeve core 12 to achieve step-by-step pressure reduction and avoid cavitation problems.

[0035] A cleaning assembly is set up to clean the spherical filter cover 13. The cleaning assembly includes an auxiliary rinsing plate 36 and a cleaning filter cartridge 27. The cleaning filter cartridge 27 is movably inserted into one side of the valve body 1, and one side of the cleaning filter cartridge 27 is fitted against the spherical filter cover 13. A pressure reducing cover 14 is provided at the lower end of the mating seat 7. The protective sleeve core 12 is fitted onto the pressure reducing cover 14. A recessed groove is opened at the center of the upper end of the sealing plate 15. The lower end of the pressure reducing cover 14 is inserted into the recessed groove. A sealing hole 16 is opened through the center of the recessed groove. A sealing end 17 is provided at the lower end of the valve stem 8. The sealing end 17 passes through the lower end of the pressure reducing cover 14 and is inserted into the sealing hole 16. The side of the sealing end 17 that contacts the sealing hole 16 is conical. On the surface, the pressure reducing cover 14 has several third pressure reducing holes through the upper end. The spherical filter cover 13 is sleeved on the surface of the spherical protective cover 10. The spherical filter cover 13 can also produce pressure reduction. When the pollutants in the fluid pass through the second pressure reducing hole of the spherical protective cover 10 and the protective sleeve core 12, they have been blocked by the spherical filter cover 13. The fluid that passes through the second pressure reducing hole of the protective sleeve core 12 needs to pass through several third pressure reducing holes of the pressure reducing cover 14 before it can connect with the sealing hole 16. At this time, the valve stem 8 and the sealing end 17 are raised, and the fluid can flow through the sealing hole 16 to several bottom pressure reducing holes 35 of the protective sleeve core 12, and finally be discharged from the outflow groove 4, so as to carry out multi-stage pressure reduction protection and improve the safety of valve body 1.

[0036] A cleaning mounting base 25 is provided on the side of the valve body 1 near the spherical filter cover 13 and away from the inflow channel 3. A movable slot 26 is provided inside the cleaning mounting base 25. The cleaning filter cartridge 27 is movably inserted into the movable slot 26. A cleaning flow channel 28 is provided on one side of the movable slot 26, connected to the outflow channel 4. A transition window 29 is provided on one side of the cleaning filter cartridge 27. Several sets of connecting rods are horizontally and symmetrically arranged inside the transition window 29. A second filter screen 31 is inserted into the inner side of the transition window 29, fitting against the several sets of connecting rods. Sealing rings 30 are fitted onto both sides of the cleaning filter cartridge 27 near the transition window 29. The widths of the sealing rings 30 and the transition window 29 are both greater than the diameter of the cleaning flow channel 28. A flange assembly plate 32 is sealed and fixed on one side of the cleaning mounting base 25 by several bolts. A control screw sleeve 33 is inserted into the center of the flange assembly plate 32 through a sealing bearing. A horizontally arranged... There is a control screw 34, and the control screw 34 is set through the control screw sleeve 33 by thread. When the sealing end 17 seals the sealing hole 16, the fluid in the upper part of the regulating valve chamber 2 is in a stable state. At this time, the control screw 34 and the cleaning filter cartridge 27 are restricted from rotating and the control screw sleeve 33 is rotated. The control screw 34 and the cleaning filter cartridge 27 can move synchronously towards the spherical filter cover 13 through the thread. When the cleaning filter cartridge 27 is close to the spherical filter cover 13, the adapter window 29 is connected to the cleaning channel 28. At this time, the liquid above the regulating valve chamber 2 can flow into the outlet tank 4 from the cleaning channel 28. At this time, when the high pressure fluid flows to the outlet tank 4, it needs to backflush the spherical filter cover 13 at the spherical protective cover 10 position to transfer the pollutants adhering to the surface of the spherical filter cover 13 to the cleaning filter cartridge 27. After being filtered by the second filter screen 31, it enters the outlet tank 4 from the cleaning channel 28.

[0037] When it is necessary to replace the cleaning filter cartridge 27 and the second filter screen 31, simply remove the flange assembly plate 32 along with the cleaning filter cartridge 27 from the cleaning mounting base 25 side for replacement. When not cleaning, the sealing ring 30 blocks the cleaning flow channel 28.

[0038] A transfer sleeve 18 is vertically installed at the lower center of the mating seat 7. The transfer sleeve 18 is sleeved with the valve stem 8 and the sealing end 17. The diameter of the valve stem 8 is smaller than the diameter of the sealing end 17. A transfer groove 19 is sandwiched between the valve stem 8 and the inner wall of the transfer sleeve 18. An independent liquid inlet groove 37 is opened on one side of the mating seat 7, connecting the transfer groove 19 and the regulating valve chamber 2. A relief groove is opened at the lower end of one side of the pressure reducing cover 14. An auxiliary flushing plate 36 is provided on one side of the transfer sleeve 18, which is connected to the transfer groove 19 and passes through the relief groove. Several backflushing holes are opened through the auxiliary flushing plate 36. When a gap in liquid flow occurs at the position of the outflow groove 4, the liquid in the regulating valve chamber 2 can enter the transfer groove 19 and the auxiliary flushing plate 36 from the independent liquid inlet groove 37 through the pressure difference, thereby assisting the backflushing of the spherical filter cover 13 and improving the cleaning effect.

[0039] Example 2: Based on Example 1, a rotation control assembly is provided to control the rotation of the spherical filter cover 13 and the protective sleeve core 12. The rotation control assembly includes a driven gear ring 20 and a control gear 21. The driven gear ring 20 is located at the upper end of the spherical filter cover 13, and the control gear 21 is located on one side of the upper end inside the valve body 1. The driven gear ring 20 is horizontally located at the upper end of the protective sleeve core 12. A first gear groove is horizontally opened on the side of the valve body 1 near the driven gear ring 20, and a second gear groove is horizontally opened on the upper end of the valve body 1 near the first gear groove. A synchronous shaft is rotatably connected between the first gear groove and the second gear groove via a bearing. A first bevel gear 22 and a control gear 21 are respectively located on the upper and lower sides of the synchronous shaft. One side of the control gear 21 is meshed with the driven gear ring 20. A third gear groove is vertically connected on the side of the valve body 1 near the second gear groove. A rotation control rod 24 is provided in the horizontally inserted third gear slot. A second bevel gear 23 is sleeved on one side of the rotation control rod 24 in the third gear slot. One side of the second bevel gear 23 is meshed with the first bevel gear 22. Rotating the rotation control rod 24 causes the second bevel gear 23 to control the control gear 21 connected to the first bevel gear 22 to rotate. At this time, the protective sleeve core 12 connected to the driven gear ring 20 is controlled to rotate by the control gear 21. Then, the surface of the spherical filter cover 13 passes through the position of the cleaning filter cylinder 27 in sequence for backflushing cleaning, which improves the stability of the regulating valve. When the protective sleeve core 12 rotates, the downward pressure of the sealing end 17 on the protective sleeve core 12 can be appropriately reduced. It is enough that no excessive liquid overflow occurs at the sealing hole 16 position to ensure that the protective sleeve core 12 can rotate and that the liquid pressure above the regulating valve cavity 2 can backflush the spherical filter cover 13.

[0040] The control gear 21 can be driven and controlled by a small servo stepper motor to achieve adaptive continuous cleaning operation.

[0041] A flow control valve having the aforementioned protective components.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective component, characterized in that, include: The mating seat (7) and the protective sleeve (12) are both inserted into the valve body (1). The valve body (1) has an adjustment valve chamber (2). The valve body (1) is located at the upper and lower ends of the adjustment valve chamber (2) and is respectively sealed with a sealing top cover (5) and a sealing bottom cover (6). The upper end of the mating seat (7) is inserted and fixed to the lower end of the sealing top cover (5). The lower end of the mating seat (7) is provided with a pressure reducing cover (14), the protective sleeve core (12) is fitted with the pressure reducing cover (14), the center of the sealing top cover (5) is vertically inserted with a valve stem (8), the lower end of the protective sleeve core (12) is horizontally provided with a sealing insert plate (15), the lower end of the valve stem (8) passes through the mating seat (7) and is inserted into the center of the sealing insert plate (15), and the outer periphery of the protective sleeve core (12) is fitted with a spherical filter cover (13). Pressure reducing holes are opened on both the protective sleeve core (12) and the pressure reducing cover (14). The cleaning assembly includes an auxiliary flushing plate (36) and a cleaning filter cartridge (27). The cleaning filter cartridge (27) is movably inserted into one side of the valve body (1), and one side of the cleaning filter cartridge (27) is fitted to the spherical filter cover (13). A rotation control assembly is provided, comprising a driven gear ring (20) and a control gear (21). The driven gear ring (20) is located at the upper end of the spherical filter cover (13), and the control gear (21) is located on one side of the upper end inside the valve body (1). The rotation control assembly is provided to control the rotation of the spherical filter cover (13) and the protective sleeve core (12). The valve body (1) has an inflow groove (3) and an outflow groove (4) respectively connected to the regulating valve chamber (2) on both sides. The inflow groove (3) and the outflow groove (4) are staggered on one side of the regulating valve chamber (2). The valve body (1) is provided with a cleaning mounting seat (25) on the side close to the spherical filter cover (13) and away from the inflow groove (3). A movable slot (26) is provided in the cleaning mounting seat (25). The cleaning filter cartridge (27) is movably inserted into the movable slot (26). The lower end of one side of the movable slot (26) is connected to the outflow groove (4) and a cleaning flow channel (28) is provided. A transfer window (29) is provided on one side of the cleaning filter cartridge (27). The lower center of the mating seat (7) is vertically provided with a transfer sleeve (18), which is sleeved with the valve stem (8). The valve stem (8) and the inner wall of the transfer sleeve (18) are sandwiched with a transfer groove (19). One side of the mating seat (7) is connected to the transfer groove (19) and the regulating valve chamber (2) and has an independent liquid inlet groove (37). The lower end of one side of the pressure reducing cover (14) is provided with a relief groove. The transfer sleeve (18) is located on one side of the relief groove, connected to the transfer groove (19) and passing through the relief groove, and has an auxiliary flushing plate (36). Several backflush holes are passed through the auxiliary flushing plate (36).

2. The protective component according to claim 1, characterized in that: The upper end of the protective sleeve core (12) is provided with a spherical protective cover (10), and the spherical protective cover (10) of the protective sleeve core (12) is correspondingly set with the inflow groove (3).

3. A protective component according to claim 2, characterized in that: The lower end of the protective sleeve core (12) is fitted with a mounting base (9) through a sealing ring. The mounting base (9) is fixedly inserted into the regulating valve cavity (2), and the mounting base (9) is located between the inflow groove (3) and the outflow groove (4) connecting the regulating valve cavity (2).

4. A protective component according to claim 3, characterized in that: The sealing insert (15) is located inside the protective sleeve core (12) at the mounting base (9). The upper end of the mounting base (9) is in contact with the lower end of the spherical protective cover (10). The protective sleeve core (12) passes through the lower end of the mounting base (9) and has several bottom pressure reduction holes (35). The upper end of the protective sleeve core (12) is in contact with the lower end of the mating seat (7).

5. A protective component according to claim 4, characterized in that: The spherical protective cover (10) and the protective sleeve core (12) are respectively provided with a number of first pressure reduction holes and a number of second pressure reduction holes on the side of the spherical protective cover (10), and the spherical filter cover (13) is fitted onto the spherical protective cover (10).

6. A protective component according to claim 5, characterized in that: The upper center of the sealing plate (15) is provided with a sinking groove, the lower end of the pressure reducing cover (14) is inserted into the sinking groove, the center of the sinking groove is provided with a sealing hole (16), the lower end of the valve stem (8) is provided with a sealing end (17), the sealing end (17) passes through the lower end of the pressure reducing cover (14) and is inserted into the sealing hole (16), the side of the sealing end (17) that contacts the sealing hole (16) is a conical surface, and the upper end of the pressure reducing cover (14) is provided with several third pressure reducing holes.

7. A protective component according to claim 6, characterized in that: The adapter window (29) is horizontally symmetrically provided with several sets of connecting rods. The inner side of the adapter window (29) is fitted with several sets of connecting rods and a second filter screen (31) is inserted. The cleaning filter cylinder (27) is fitted with sealing rings (30) on both sides near the adapter window (29). The width of the sealing rings (30) and the adapter window (29) is greater than the diameter of the cleaning channel (28). The cleaning mounting base (25) is sealed and fixed with a flange assembly plate (32) by several bolts. The center of the flange assembly plate (32) is fitted with a control screw sleeve (33) through a sealing bearing. The center of the cleaning filter cylinder (27) away from the spherical filter cover (13) is horizontally provided with a control screw (34), and the control screw (34) is set by threading through the control screw sleeve (33).

8. A protective component according to claim 7, characterized in that: The transfer sleeve (18) is fitted onto the sealing end (17), and the diameter of the valve stem (8) is smaller than the diameter of the sealing end (17).

9. A protective component according to claim 8, characterized in that: The upper end of the protective sleeve core (12) is provided with a driven gear ring (20). A first gear groove is provided horizontally on the side of the valve body (1) near the driven gear ring (20). A second gear groove is provided horizontally on the upper end of the valve body (1) near the first gear groove. A synchronous shaft is provided between the first gear groove and the second gear groove through a bearing. A first bevel gear (22) and a control gear (21) are provided on the upper and lower sides of the synchronous shaft, respectively. One side of the control gear (21) is meshed with the driven gear ring (20). A third gear groove is provided vertically on the side of the valve body (1) near the second gear groove. A rotating control rod (24) is provided horizontally inserted into the third gear groove on one side of the valve body (1). A second bevel gear (23) is sleeved on the side of the rotating control rod (24) placed in the third gear groove. One side of the second bevel gear (23) is meshed with the first bevel gear (22).

10. A flow regulating valve, characterized in that: The flow regulating valve has the protective component described in claim 9.

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