Protective assembly and flow regulating valve

Abstract

The invention relates to the field of adjusting valves, in particular to a protection assembly and a flow adjusting valve, the protection assembly comprises a matching seat, a protection sleeve core, a cleaning assembly and a rotation control assembly, the matching seat and the protection sleeve core are both inserted into a valve body, and an adjusting valve cavity is formed in the valve body; a protective sleeve core with a first pressure reducing hole, a second pressure reducing hole and a bottom pressure reducing hole is arranged in an adjusting valve cavity of a valve body, and is matched with a pressure reducing cover with a third pressure reducing hole to perform multi-stage pressure reducing on liquid flowing from an inflow groove to an outflow groove, so that the problem that the use stability of the device is influenced due to cavitation of high-pressure liquid is avoided; and meanwhile, when the spherical protective cover of the arc-shaped structure is used for depressurization operation, pressure relief and flow division of the fluid can be conducted, in addition, under the cooperative action of the cleaning assembly and the rotating control assembly, pressure relief can be enhanced, meanwhile, the fluid fed into the inflow groove can be filtered, maintenance is convenient, and operation is free of worry and convenient.

Description

Technical Field

[0001] The invention relates to the field of regulating valves, in particular to a protection component and a flow regulating valve. Background Art

[0002] A flow control valve is a valve specially used to control the flow of fluid (liquid, gas or steam). It achieves precise regulation of the flow by changing the flow cross-sectional area inside the valve. The invention with existing publication number CN109630704B discloses a regulating valve for regulating the flow rate of process fluid of process production equipment. The regulating valve includes a valve housing with a valve seat and a valve piston connected to a valve stem. This solution optimizes the anti-rotation stability of the flange and the valve stem. However, when the regulating valve is used in a high-pressure fluid pipeline, the high-pressure impact of the fluid during the switching of the regulating valve will cause cavitation problems on the valve body and the valve stem, thereby affecting the service life of the regulating valve. Moreover, when certain pollutants exist in the fluid, the regulating valve needs to be disassembled and maintained as a whole after a certain period of use, which is time-consuming, labor-intensive and inconvenient to use. Summary of the invention

[0003] The object of the present invention is to provide a protection component and a flow control valve to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a protection component, comprising: A matching seat and a protective sleeve core, wherein the matching seat and the protective sleeve core are both plugged into the valve body, a regulating valve cavity is provided in the valve body, and the valve body is located at the upper and lower ends of the regulating valve cavity and is respectively sealed and plugged with a sealing top cover and a sealing bottom cover, and the upper end of the matching seat is plugged and fixed to the lower end of the sealing top cover; The lower end of the matching seat is provided with a pressure reducing cover, the protective sleeve core is sleeved with the pressure reducing cover, a valve stem is vertically inserted in the center of the sealing top cover, a blocking plug is horizontally provided at the lower end of the protective sleeve core, the lower end of the valve stem passes through the matching seat and is inserted in the center of the blocking plug, and a spherical filter cover is sleeved on the outer peripheral side of the protective sleeve core; A cleaning assembly, the cleaning assembly comprising an auxiliary flushing disc and a cleaning filter cartridge, the cleaning filter cartridge is movably plugged into one side of the valve body, and one side of the cleaning filter cartridge is arranged in contact with the spherical filter cover; The rotation control component comprises a driven gear ring and a control gear. The driven gear ring is arranged at the upper end of the spherical filter cover, and the control gear is arranged at one side of the upper end in the valve body.

[0005] Preferably, both sides of the valve body are connected to the regulating valve cavity and are provided with an inflow groove and an outflow groove respectively. The inflow groove and the outflow groove are connected to one side of the regulating valve cavity and are staggered up and down. A spherical protective cover is provided at the upper end of the protective sleeve core, and the spherical protective cover of the protective sleeve core is arranged corresponding to the inflow groove.

[0006] Preferably, a mounting base is provided at the lower end of the protective sleeve core through a sealing rubber ring, the mounting base is fixedly inserted into the regulating valve cavity, and the mounting base is located between the positions where the inflow groove and the outflow groove are connected to the regulating valve cavity.

[0007] Preferably, the blocking plug plate is arranged inside the protective sleeve core at the mounting base position, the upper end of the mounting base contacts the lower end of the spherical protective cover, the protective sleeve core passes through the lower end of the mounting base and is provided with a plurality of bottom pressure reducing holes, and the upper end of the protective sleeve core contacts the lower end of the matching seat.

[0008] 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 a side close to the spherical protective cover, and the spherical filter cover is arranged to be sleeved on the spherical protective cover.

[0009] Preferably, a sinking groove is opened at the center of the upper end of the sealing plug plate, the lower end of the pressure reducing cover is inserted into the sinking groove, a sealing hole is opened through the center of the sinking groove, a sealing end is provided at the lower end of the valve stem, the sealing end passes through the lower end of the pressure reducing cover and is inserted into the sealing hole, the side surface of the sealing end contacting the sealing hole is a conical surface, and a plurality of third pressure reducing holes are opened through the upper end of the pressure reducing cover.

[0010] Preferably, a cleaning mounting seat is provided on the side of the valve body close to the spherical filter cover and away from the inflow groove, a movable slot is provided in the cleaning mounting seat, a cleaning filter cartridge is movably inserted in the movable slot, a lower end of one side of the movable slot is connected to the outflow groove and a cleaning flow channel is provided, a transfer window is provided on one side of the cleaning filter cartridge, a plurality of groups of connecting rods are horizontally symmetrically provided in the transfer window, a second filter screen is inserted in the inner side of the transfer window in contact with the plurality of groups of connecting rods, sealing rings are sleeved on both sides of the cleaning filter cartridge close to the transfer window, the widths of the sealing ring and the transfer window are both greater than the diameter of the cleaning flow channel, a flange assembly plate is provided on one side of the cleaning mounting seat for sealing and fixing by a plurality of bolts, a control screw sleeve is inserted in the center of the flange assembly plate through a sealing bearing, a control screw is horizontally provided in the center of a side of the cleaning filter cartridge away from the spherical filter cover, and the control screw passes through the control screw sleeve through a thread.

[0011] Preferably, a transfer sleeve is vertically provided at the center of the lower end of the matching seat, and the transfer sleeve is sleeved on the valve stem and the sealing end head. The diameter of the valve stem is smaller than the diameter of the sealing end head. 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 matching seat connecting the transfer groove and the regulating valve cavity, and a yield groove is provided at the lower end of one side of the pressure reduction cover. The transfer sleeve is located on one side of the yield groove, connecting the transfer groove and penetrating the yield groove to provide an auxiliary flushing disk, and a plurality of recoil holes are provided on the auxiliary flushing disk.

[0012] Preferably, a driven gear ring is horizontally provided at the upper end of the protective sleeve core, a first gear groove is horizontally opened on one side of the valve body close to the driven gear ring, a second gear groove is horizontally opened on the upper end of the valve body close to 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 connected to one side of the valve body close to the second gear groove, a rotating control lever is horizontally inserted into the third gear groove on one side of the valve body, a second bevel gear is sleeved on one side of the rotating control lever placed in the third gear groove, and one side of the second bevel gear is meshed with the first bevel gear.

[0013] A flow regulating valve comprises the above-mentioned protection component.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A protective sleeve core with a first pressure-reducing hole, a second pressure-reducing hole and a bottom pressure-reducing hole is arranged in the regulating valve cavity of the valve body, and a pressure-reducing cover with a third pressure-reducing hole is cooperated to perform multi-stage pressure reduction on the liquid flowing from the inflow groove to the outflow groove, so as to avoid cavitation problems caused by high-pressure liquid and affect the stability of the device. At the same time, the arc-shaped spherical protective cover can relieve pressure and divert the fluid when performing the pressure reduction operation. In addition, the cleaning component and the rotation control component cooperate to enhance the pressure relief and filter the fluid sent into the inflow groove at the same time, and it is easy to maintain and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the structure inside the regulating valve cavity of the present invention; Figure 3 It is a schematic diagram of the partial cutaway structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of part A; Figure 5 For the present invention Figure 4 Schematic diagram of part B; Figure 6 For the present invention Figure 3 Schematic diagram of the C part; Figure 7 This is a schematic diagram of the installation structure of the pressure reduction cover of the present invention; Figure 8 This is a schematic diagram of the matching structure of the protective sleeve core and the spherical filter cover of the present invention; Fig. 9 It is a schematic diagram of the structure of the cleaning filter cartridge 27 of the present invention.

[0016] In the figure: valve body 1, regulating valve cavity 2, inflow groove 3, outflow groove 4, sealing top cover 5, sealing bottom cover 6, matching seat 7, valve stem 8, mounting base 9, spherical protective cover 10, protective sleeve core 12, spherical filter cover 13, pressure reduction cover 14, blocking plug plate 15, blocking hole 16, blocking end 17, transfer sleeve 18, adapter groove 19, driven gear ring 20, control gear 21, first bevel gear 22, second bevel gear 23, rotating control rod 24, cleaning mounting seat 25, movable slot 26, cleaning filter cartridge 27, cleaning flow channel 28, adapter window 29, sealing belt ring 30, second filter screen 31, flange assembly plate 32, control screw sleeve 33, control screw 34, bottom pressure reduction hole 35, auxiliary flushing plate 36, independent liquid inlet groove 37. DETAILED DESCRIPTION

[0017] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 9 , the present invention provides the following technical solutions: Embodiment 1: A protective component, including a matching seat 7 and a protective sleeve core 12, the matching seat 7 and the protective sleeve core 12 are both inserted in the valve body 1, a regulating valve cavity 2 is opened in the valve body 1, the valve body 1 is located at the upper and lower ends of the regulating valve cavity 2 and is respectively sealed and inserted with a sealing top cover 5 and a sealing bottom cover 6, the upper end of the matching seat 7 is inserted and fixed to the lower end of the sealing top cover 5, the two sides of the valve body 1 are respectively connected to the regulating valve cavity 2 and are provided with an inflow groove 3 and an outflow groove 4, the inflow groove 3 and the outflow groove 4 are connected to one side of the regulating valve cavity 2 and are arranged in an upper and lower staggered manner, the upper end of the protective sleeve core 12 is provided with a spherical protective cover 10, and the protective sleeve The spherical protective cover 10 of the core 12 is arranged corresponding to the inflow groove 3. The lower end of the protective sleeve core 12 is provided with a mounting base 9 through a sealing rubber ring. The mounting base 9 is fixedly inserted in the regulating valve cavity 2, and the mounting base 9 is located between the positions where the inflow groove 3 and the outflow groove 4 are connected to 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 matching seat 7 can be fixedly and sealedly inserted in the upper end of the regulating valve cavity 2 through the sealing top cover 5, and the protective sleeve core 12 is inserted into the lower part of the regulating valve cavity 2 from the bottom of the valve body 1 through the mounting base 9.

[0019] The center of the sealing top cover 5 is vertically plugged with a valve stem 8, and the lower end of the protective sleeve core 12 is horizontally provided with a plugging plate 15. The lower end of the valve stem 8 passes through the matching seat 7 and is plugged into the center of the plugging plate 15. The outer peripheral side of the protective sleeve core 12 is sleeved with a spherical filter cover 13. The plugging plate 15 is arranged in 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. The protective sleeve core 12 passes through the lower end of the mounting base 9 and is provided with a plurality of bottoms. The pressure reducing hole 35, the upper end of the protective sleeve core 12 is in contact with the lower end of the matching seat 7, and the spherical protective cover 10 and the protective sleeve core 12 are respectively provided with a plurality of first pressure reducing holes and a plurality of second pressure reducing holes on the side close to the spherical protective cover 10, and the spherical filter cover 13 is sleeved on the spherical protective cover 10. When the liquid in the regulating valve chamber 2 flows, it must first pass through the first pressure reducing hole of the spherical protective cover 10 and then pass through the second pressure reducing hole of the protective sleeve core 12, so as to realize step-by-step pressure reduction and avoid cavitation problems.

[0020] A cleaning component is provided to clean the spherical filter cover 13, and the cleaning component includes an auxiliary flushing disk 36 and a cleaning filter cartridge 27. The cleaning filter cartridge 27 is movably plugged into one side of the valve body 1, and one side of the cleaning filter cartridge 27 is arranged in contact with the spherical filter cover 13. A pressure reducing cover 14 is provided at the lower end of the matching seat 7, and the protective sleeve core 12 is sleeved on the pressure reducing cover 14. A sinking groove is provided at the center of the upper end of the sealing plug plate 15, and the lower end of the pressure reducing cover 14 is plugged into the sinking groove. A sealing hole 16 is provided through the center of the sinking groove. A sealing end head 17 is provided at the lower end of the valve stem 8, and the sealing end head 17 passes through the lower end of the pressure reducing cover 14 and is plugged into the sealing hole 16. The side of the sealing end head 17 that contacts the sealing hole 16 is conical. The spherical filter cover 13 is sleeved on the surface of the spherical protective cover 10, and the spherical filter cover 13 can also produce a pressure reduction effect. When the pollutants in the fluid pass through the second pressure reduction holes of the spherical protective cover 10 and the protective sleeve core 12, they have been blocked by the spherical filter cover 13. The fluid passing through the second pressure reduction holes of the protective sleeve core 12 needs to pass through the several third pressure reduction holes of the pressure reduction cover 14 before it can be connected with the blocking hole 16. At this time, the valve stem 8 and the blocking end 17 are lifted, and the fluid can flow through the blocking hole 16 to the several bottom pressure reduction holes 35 of the protective sleeve core 12, and finally be discharged from the outflow groove 4, performing multi-stage pressure reduction protection to improve the safety of the valve body 1.

[0021] A cleaning mounting seat 25 is provided on the side of the valve body 1 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. A cleaning filter cartridge 27 is movably inserted into the movable slot 26. A cleaning flow channel 28 is provided at the lower end of one side of the movable slot 26, which is connected to the outflow groove 4. A transfer window 29 is provided on one side of the cleaning filter cartridge 27. A plurality of groups of connecting rods are horizontally symmetrically provided in the transfer window 29. A second filter screen 31 is inserted in the plurality of groups of connecting rods in contact with the inner side of the transfer window 29. Sealing belt rings 30 are sleeved on both sides of the cleaning filter cartridge 27 close to the transfer window 29. The widths of the sealing belt ring 30 and the transfer 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 seat 25 by a plurality of bolts. A control screw sleeve 33 is inserted in 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 threaded through the control screw sleeve 33. When the blocking end 17 blocks the blocking hole 16, the upper fluid in 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 to rotate to the position of the spherical filter cover 13. The control screw 34 and the cleaning filter cartridge 27 can be synchronously moved to the position of the spherical filter cover 13 through thread control. When the cleaning filter cartridge 27 is close to the spherical filter cover 13, the transfer window 29 is connected to the position of the cleaning flow channel 28. At this time, the liquid above the regulating valve chamber 2 can flow from the cleaning flow channel 28 into the outflow groove 4. At this time, when the high-pressure fluid flows to the outflow groove 4, it is necessary to backwash the spherical filter cover 13 at the position of the spherical protective cover 10, so as to transfer the pollutants adhered to the surface of the spherical filter cover 13 to the cleaning filter cartridge 27, and after being filtered by the second filter screen 31, it enters the outflow groove 4 from the cleaning flow channel 28; When the cleaning filter cartridge 27 and the second filter screen 31 need to be replaced, the flange assembly plate 32 together with the cleaning filter cartridge 27 can be removed and replaced from one side of the cleaning mounting seat 25. When not cleaning, the sealing belt ring 30 seals the cleaning flow channel 28.

[0022] A transfer sleeve 18 is vertically provided at the center of the lower end of the matching seat 7. The transfer sleeve 18 is sleeved on the valve stem 8 and the blocking end 17. The diameter of the valve stem 8 is smaller than the diameter of the blocking end 17. A transfer groove 19 is clamped between the inner wall of the valve stem 8 and the transfer sleeve 18. One side of the matching seat 7 is connected to the transfer groove 19 and the regulating valve chamber 2 to open an independent liquid inlet groove 37. A yield groove is opened at the lower end of one side of the pressure reduction cover 14. The transfer sleeve 18 is located on one side of the yield groove and is connected to the transfer groove 19 and penetrates the yield groove to provide an auxiliary flushing disk 36. A number of recoil holes are penetrated on the auxiliary flushing disk 36. When a gap for liquid flow appears at the outflow groove 4, the liquid in the regulating valve chamber 2 can enter the transfer groove 19 and the auxiliary flushing disk 36 from the independent liquid inlet groove 37 through the pressure difference, and assist in recoil flushing the spherical filter cover 13 to improve the cleaning effect.

[0023] Embodiment 2: On the basis of embodiment 1, a rotation control component is provided to control the rotation of the spherical filter cover 13 and the protective sleeve core 12, and the rotation control component includes a driven gear ring 20 and a control gear 21. The driven gear ring 20 is provided at the upper end of the spherical filter cover 13, and the control gear 21 is provided at one side of the upper end in the valve body 1. The upper end of the protective sleeve core 12 is horizontally provided with a driven gear ring 20, and a first gear groove is horizontally opened on one side of the valve body 1 close to the driven gear ring 20, and a second gear groove is horizontally opened on the upper end of the valve body 1 close to the first gear groove. A synchronous shaft is rotatably inserted between the first gear groove and the second gear groove through a bearing, and a first bevel gear 22 and a control gear 21 are respectively provided on the upper and lower sides of the synchronous shaft, and one side of the control gear 21 is meshed and connected with the driven gear ring 20, and a third gear groove is vertically connected to one side of the valve body 1 close to the second gear groove. One side of the valve body 1 A rotating control rod 24 is provided in the third gear groove which is inserted horizontally. A second bevel gear 23 is sleeved on one side of the rotating control rod 24 which is placed in the third gear groove. One side of the second bevel gear 23 is meshed and connected with the first bevel gear 22. The rotating control rod 24 is rotated to control 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, and then the surface of the spherical filter cover 13 passes through the position of the cleaning filter cartridge 27 in turn for backwash cleaning, thereby improving the stability of the use of the regulating valve. When the protective sleeve core 12 rotates, the downward pressure of the blocking end 17 on the protective sleeve core 12 can be appropriately weakened, and the position of the blocking hole 16 does not produce excessive liquid overflow, thereby ensuring that the protective sleeve core 12 can rotate, and the liquid pressure above the regulating valve cavity 2 can backwash the spherical filter cover 13; The control gear 21 can be driven and controlled by a small servo stepper motor to achieve adaptive continuous cleaning operation.

[0024] A flow regulating valve comprises the above-mentioned protection component.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective component, characterized in that: include: A matching seat (7) and a protective sleeve core (12), wherein the matching seat (7) and the protective sleeve core (12) are both inserted into the valve body (1), a regulating valve cavity (2) is provided in the valve body (1), and a sealing top cover (5) and a sealing bottom cover (6) are respectively sealed and inserted at the upper and lower ends of the valve body (1) located in the regulating valve cavity (2), and the upper end of the matching seat (7) is inserted and fixed to the lower end of the sealing top cover (5); The lower end of the matching seat (7) is provided with a pressure reducing cover (14), the protective sleeve core (12) is sleeved with the pressure reducing cover (14), a valve stem (8) is vertically inserted in the center of the sealing top cover (5), a blocking plug plate (15) is horizontally provided at the lower end of the inner side of the protective sleeve core (12), the lower end of the valve stem (8) passes through the matching seat (7) and is inserted into the center of the blocking plug plate (15), and a spherical filter cover (13) is sleeved on the outer peripheral side of the protective sleeve core (12); A cleaning assembly, the cleaning assembly comprising an auxiliary flushing disc (36) and a cleaning filter cartridge (27), the cleaning filter cartridge (27) being movably plugged into one side of the valve body (1), and one side of the cleaning filter cartridge (27) being arranged in contact with the spherical filter cover (13); A rotation control assembly comprises a driven gear ring (20) and a control gear (21), wherein the driven gear ring (20) is arranged at the upper end of the spherical filter cover (13), and the control gear (21) is arranged at one side of the upper end inside the valve body (1).

2. A protective assembly according to claim 1, characterized in that: The valve body (1) has an inflow groove (3) and an outflow groove (4) on both sides respectively connected to the regulating valve cavity (2); the inflow groove (3) and the outflow groove (4) are arranged in an up-down offset manner on one side connected to the regulating valve cavity (2); a spherical protective cover (10) is provided at the upper end of the protective sleeve core (12); and the spherical protective cover (10) of the protective sleeve core (12) is arranged corresponding to the inflow groove (3).

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

4. A protective assembly according to claim 3, characterized in that: The blocking plug plate (15) is arranged 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), the protective sleeve core (12) penetrates the lower end of the mounting base (9) and is provided with a plurality of bottom pressure reducing holes (35), and the upper end of the protective sleeve core (12) contacts the lower end of the matching seat (7).

5. A protection assembly according to claim 4, characterized in that: The spherical protective cover (10) and the protective sleeve core (12) are respectively provided with a plurality of first pressure reducing holes and a plurality of second pressure reducing holes on a side close to the spherical protective cover (10), and the spherical filter cover (13) is sleeved on the spherical protective cover (10).

6. A protection assembly according to claim 5, characterized in that: A sinking groove is provided at the center of the upper end of the plugging plate (15), the lower end of the pressure reducing cover (14) is inserted into the sinking groove, a blocking hole (16) is provided through the center of the sinking groove, a blocking end (17) is provided at the lower end of the valve stem (8), the blocking end (17) passes through the lower end of the pressure reducing cover (14) and is inserted into the blocking hole (16), a side surface of the blocking end (17) in contact with the blocking hole (16) is a conical surface, and a plurality of third pressure reducing holes are provided through the upper end of the pressure reducing cover (14).

7. A protection assembly according to claim 6, characterized in that: A cleaning mounting seat (25) is provided on a side of the valve body (1) 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). A cleaning filter cartridge (27) is movably plugged into the movable slot (26). A cleaning flow channel (28) is provided at a lower end of one side of the movable slot (26) and connected to the outflow groove (4). A transfer window (29) is provided on one side of the cleaning filter cartridge (27). A plurality of connecting rods are horizontally symmetrically provided in the transfer window (29). The inner side of the transfer window (29) is fitted with the plurality of connecting rods and plugged with a second filter screen (31). Sealing rings (30) are sleeved on both sides of the filter cartridge (27) near the transfer window (29); the widths of the sealing ring (30) and the transfer window (29) are both greater than the diameter of the clean flow channel (28); a flange assembly plate (32) is sealed and fixed on one side of the clean mounting seat (25) by means of a plurality of bolts; a control screw sleeve (33) is inserted in the center of the flange assembly plate (32) via a sealing bearing; a control screw rod (34) is horizontally disposed at the center of a side of the clean filter cartridge (27) away from the spherical filter cover (13); and the control screw rod (34) is threadedly penetrated through the control screw sleeve (33).

8. A protection assembly according to claim 7, characterized in that: A transfer sleeve (18) is vertically provided at the center of the lower end of the matching seat (7), and the transfer sleeve (18) is sleeved with the valve stem (8) and the plugging end (17). The diameter of the valve stem (8) is smaller than the diameter of the plugging end (17). A transfer groove (19) is clamped between the valve stem (8) and the inner wall of the transfer sleeve (18). An independent liquid inlet groove (37) is provided on one side of the matching seat (7) and is connected to the transfer groove (19) and the regulating valve chamber (2). A clearance groove is provided at the lower end of one side of the pressure reduction cover (14). The transfer sleeve (18) is located on one side of the clearance groove and is connected to the transfer groove (19) and penetrates the clearance groove to be provided with an auxiliary flushing disk (36), and a plurality of backwashing holes are penetrated on the auxiliary flushing disk (36).

9. A protection assembly according to claim 8, characterized in that: A driven gear ring (20) is horizontally arranged at the upper end of the protective sleeve core (12); a first gear groove is horizontally opened at one side of the valve body (1) close to the driven gear ring (20); a second gear groove is horizontally opened at the upper end of the valve body (1) close to the first gear groove; a synchronous shaft is rotatably inserted 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 arranged at the upper and lower sides of the synchronous shaft; one side of the control gear (21) is meshingly connected to the driven gear ring (20); a third gear groove is vertically opened at one side of the valve body (1) close to the second gear groove; a rotating control rod (24) is horizontally inserted into the third gear groove; a second bevel gear (23) is sleeved on one side of the rotating control rod (24) disposed in the third gear groove; one side of the second bevel gear (23) is meshingly connected to the first bevel gear (22).

10. A flow control valve, characterized in that: The flow regulating valve has the protection component described in any one of the above claims 9.

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