An eccentric butterfly valve with anti-clogging function

Abstract

The present invention relates to the technical field of eccentric butterfly valves, and discloses an eccentric butterfly valve with an anti-clogging function, including an eccentric butterfly valve, a shaft tube is fixedly provided at the lower end of one side of the eccentric butterfly valve, a driving motor is fixedly installed at the lower end of the shaft tube, a rotating shaft is fixedly provided at the upper end of the rotating shaft of the driving motor, a valve flap is fixedly provided at the outer side of the rotating shaft near the inner side of the eccentric butterfly valve, a filter assembly is provided inside one side of the eccentric butterfly valve, a cleaning assembly is provided at the inner and outer sides of the eccentric butterfly valve near the position between the shaft tube and the filter assembly, and a support assembly is provided at the outer side of the eccentric butterfly valve corresponding to the position of the filter assembly. The eccentric butterfly valve with an anti-clogging function described in the present invention, through the overall coordinated use, the filter screen filters impurities in the water source to avoid blockage, and prevents the annular sleeve from being offset under the impact of water flow.

Description

Technical Field

[0001] The invention relates to the technical field of eccentric butterfly valves, and in particular to an eccentric butterfly valve with an anti-blocking function. Background Art

[0002] Eccentric butterfly valves are widely used in metallurgy, chemical industry, petroleum, heat, energy, light industry and other fields. Their excellent cutting performance and durability make them perform well in these fields. At the same time, they are small in size, light in weight, economical and practical, and easy to maintain. Such as the existing compression grounding rod, the public document: CN118110795B is an eccentric butterfly valve with anti-blocking function, the eccentric butterfly valve includes a valve body, a driving mechanism and a pretreatment pipe, the driving mechanism is arranged above the valve body, compared with the current eccentric butterfly valve, the present invention is provided with a pretreatment pipe, the pretreatment component in the pretreatment pipe can intercept impurities in the liquid, prevent the impurities from gathering in the valve body, so that the eccentric butterfly valve is blocked, the present invention is also provided with a separation component and a piezoelectric ceramic vibrating plate, the piezoelectric ceramic vibrating plate can make the impurities intercepted by the pretreatment component fall into the inside of the pretreatment pipe near one end of the valve body, the separation component can be used to clean the pretreatment component without disassembling the valve body and the pretreatment pipe, so as to avoid frequent disassembly leading to a decrease in the sealing of the valve, when the valve disc is subjected to excessive thrust of the liquid, the positioning component can prevent the valve disc from shifting and causing leakage problems.

[0003] The above device filters the impurities entering the eccentric butterfly valve by switching between two sets of filter plates, but does not effectively deal with the impurities adhering to the two sets of filter plates, which leads to reduced filtration efficiency of the filter plates over time. In addition, the valve disc of the eccentric butterfly valve is supported and stabilized, but in fact the incoming water source first contacts the filtration structure, so the filtration structure should be supported even more. Summary of the invention

[0004] The main purpose of the present invention is to provide an eccentric butterfly valve with an anti-clogging function, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] An eccentric butterfly valve with an anti-clogging function comprises an eccentric butterfly valve, a shaft tube is fixedly arranged at the lower end of one side of the eccentric butterfly valve, a driving motor is fixedly installed at the lower end of the shaft tube, a rotating shaft is fixedly arranged at the upper end of the rotating shaft of the driving motor, a valve disc is fixedly arranged at the outer side of the rotating shaft near the inner side of the eccentric butterfly valve, a filter assembly is arranged inside one side of the eccentric butterfly valve, a cleaning assembly is arranged at a position between the shaft tube and the filter assembly on the inner and outer sides of the eccentric butterfly valve, a supporting assembly is arranged at the outer side of the eccentric butterfly valve corresponding to the position of the filter assembly, and a A hydraulic cylinder, wherein the filter assembly comprises an annular sleeve movably arranged on the inner side of an eccentric butterfly valve, a filter screen is rotatably arranged on the inner side of the annular sleeve, a plurality of groups of round blocks are fixedly arranged on the outer side of the filter screen, annular grooves are provided on the inner side of the annular sleeve at positions corresponding to the plurality of groups of round blocks, a fixed shaft is fixedly arranged on the upper and lower ends of the annular sleeve, a groove is provided at the connection between the upper one of the two groups of fixed shafts and the annular sleeve, a circular shaft is rotatably arranged on the inner side of the fixed shaft, a knob is fixedly arranged on the upper end of the circular shaft, a circular sheet is fixedly arranged on the lower end of the circular shaft, and an arc-shaped sheet is fixedly arranged on the lower end of the circular sheet.

[0007] Preferably, the cleaning component comprises a square sleeve fixedly arranged on the lower side of the eccentric butterfly valve, a square box is arranged on the inner side of the square sleeve, a sealing opening is opened on the upper end of the square box, a fixed edge is fixedly arranged on the outer side of the square box near the lower end of the square sleeve, a sewage pipe is fixedly arranged on the lower end of one side of the square box, a pipe cap is arranged on the outer side of the sewage pipe through a thread, a round rod is rotatably arranged inside the square box near the other side, a sealing cover is fixedly arranged on the outer side of the round rod near the middle position, a brush is fixedly arranged on the outer side of the round rod near the lower side of the sealing cover, a sliding groove is opened on one side of the round rod near the upper side of the sealing cover, a protrusion is fixedly arranged at the position corresponding to the sliding groove on the upper end of the eccentric butterfly valve, a small gear is sleeved on the outer side of the sliding groove near the upper end of the protrusion, a connecting ring is fixedly arranged on the lower end of the small gear, and two groups of positioning shafts are fixedly arranged on the upper end of the eccentric butterfly valve near the protrusion, and a large gear is arranged on the upper side of the rotating shaft and the outer side of a group of positioning shafts near the protrusion.

[0008] Preferably, the supporting assembly comprises two groups of annular shells which are sleeved on the outer side of the eccentric butterfly valve, two groups of handles are fixedly provided on the front and rear sides of the two groups of annular shells, a plurality of groups of ramp blocks are fixedly provided on the inner wall of the annular shells, square grooves are provided at positions corresponding to the plurality of groups of ramp blocks in the interior of the eccentric butterfly valve, and limit blocks are movably provided on the inner side of the square grooves, a U-shaped bar is fixedly provided on one end of the limit block, and a spring is fixedly provided between the inner wall of one side of the U-shaped bar and the outer wall of the eccentric butterfly valve.

[0009] Preferably, the valve disc seal is arranged inside the eccentric butterfly valve, the hydraulic cylinder is fixed to the cleaning assembly through a mounting plate, the annular sleeve seal is arranged inside the eccentric butterfly valve, the filter screen is arranged as a double-layer structure, and several groups of the circular blocks are movable in the annular groove.

[0010] Preferably, the two groups of fixed shafts and eccentric butterfly valves are rotatably arranged, the disc is sealed and fitted in the groove, and the two ends of the arc-shaped piece are respectively close to the edge and the center of the disc.

[0011] Preferably, the square sleeve is fixed to the fixed edge by bolts, the square box is fixedly connected to the mounting plate, the sealing port is communicated with the interior of the eccentric butterfly valve, the round rod passes through the interior of the eccentric butterfly valve, the square box and the protrusion, the lower side of the round rod is rotatably arranged with the telescopic rod of the hydraulic cylinder, the sealing cover is adapted to the sealing port, the brush is fitted to one end of the filter screen, and the pinion, the round rod and the slide groove are slidably arranged.

[0012] Preferably, the pinion is meshed with a nearby large gear, the connecting ring is arranged to rotate in the protrusion, one of the two groups of large gears is fixed to the rotating shaft, and the other group of the two groups of large gears is rotated with the positioning shaft, the two groups of large gears are meshed, and the rotation angle between the large gear and the pinion is two to one.

[0013] Preferably, the two groups of the annular shells are positioned at the outer side of the eccentric butterfly valve by bolts, the limit blocks arranged in the two groups of the annular shells are respectively located on both sides of the annular sleeve, the side of the annular shell that fits the eccentric butterfly valve is open, several groups of the ramp blocks are evenly arranged in a ring, several groups of the limit blocks are sealed and fitted on the inner side of the square groove, the U-shaped strip passes through the inside of the eccentric butterfly valve to the inner side of the annular shell, and one side of the U-shaped strip is set as an arc surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The water source enters the eccentric butterfly valve from one side of the filter component, and the driving motor drives the rotating shaft and the valve disc to rotate, so as to realize the opening and closing state of the eccentric butterfly valve. When the valve disc is closed, a group of large gears connected to the upper side of the rotating shaft will be driven to rotate 90 degrees, driving another group of large gears and small gears to rotate. When the driving motor drives the valve disc to rotate 90 degrees, the large gear will drive the small gear to rotate 180 degrees. With the use of the hydraulic cylinder, the sealing cover closed in the sealing port is lifted up and driven by the small gear, the connecting ring and the slide groove to rotate 180 degrees, so that the brush is attached to one end of the filter net. With the use of the filter component, the contact side is cleaned, and the cleaned impurities will be in the area of ​​the valve disc and the filter net. After the sealing cover comes out, the sealing port is connected to the inside of the eccentric butterfly valve. By unscrewing the pipe cap, the internal water source and impurities will be discharged from the sewage pipe to the outside, cleaning the dirt on the filter net and improving the use effect of the filter net.

[0016] The water source is filtered through the filter to filter the impurities in the water source, and the clean water source enters the inner side of the eccentric butterfly valve, reducing impurities and particulate matter, thereby reducing the wear on the valve, extending the service life of the valve, and preventing blockage inside the eccentric butterfly valve. The round shaft, round piece, and arc piece are driven to rotate by the knob, and the arc piece will drive the round block and the filter to rotate in the circular ring during the rotation process, so as to cooperate with the cleaning component to comprehensively clean the surface of the filter. The filter can be rotated 180 degrees through the fixed shaft on the lower side, and the double-layer structure of the filter has a better filtering effect, and can be switched to reduce damage caused by water flow impact.

[0017] By pulling the handle, the two groups of circular shells rotate on the outside of the eccentric butterfly valve, and the slope blocks on the inner wall of the circular shells will push the U-shaped strips and square grooves to move to the inside of the eccentric butterfly valve, while compressing the springs. Several groups of square grooves on both sides are restricted on both sides of the circular sleeve respectively, and then the circular shell is positioned on the outside of the eccentric butterfly valve, through the two ends of the circular sleeve, to prevent the circular sleeve from being offset under the impact of water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an eccentric butterfly valve with anti-clogging function according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of an eccentric butterfly valve with anti-clogging function according to the present invention;

[0020] Figure 3 It is a schematic diagram of a partially cutaway structure of a filter assembly of an eccentric butterfly valve with an anti-clogging function according to the present invention;

[0021] Figure 4It is a schematic structural diagram of a cleaning component of an eccentric butterfly valve with anti-clogging function according to the present invention;

[0022] Figure 5 The present invention is an eccentric butterfly valve with anti-blocking function Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 6 It is a schematic diagram of the partial structure of a cleaning component of an eccentric butterfly valve with anti-clogging function according to the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a support assembly of an eccentric butterfly valve with an anti-clogging function according to the present invention;

[0025] Figure 8 The present invention is an eccentric butterfly valve with anti-blocking function Figure 7 Schematic diagram of the enlarged structure of part B in the middle.

[0026] In the figure: 1, eccentric butterfly valve; 2, shaft tube; 3, drive motor; 4, rotating shaft; 5, valve disc; 6, filter assembly; 61, circular ring; 62, filter screen; 63, round block; 64, annular groove; 65, fixed shaft; 66, groove; 67, circular shaft; 68, knob; 69, round piece; 610, arc piece; 7, cleaning assembly; 71, square sleeve; 72, square box; 73, sealing port; 74, fixed edge; 75, sewage pipe; 76, pipe cap; 77, round rod; 78, sealing cover; 79, brush; 710, slide groove; 711, bump; 712, small gear; 713, connecting ring; 714, positioning shaft; 715, large gear; 8, support assembly; 81, circular ring shell; 82, handle; 83, ramp block; 84, square groove; 85, limit block; 86, U-shaped bar; 87, spring; 9, hydraulic cylinder. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 8An embodiment of the present invention is as follows: an eccentric butterfly valve with anti-blocking function, comprising an eccentric butterfly valve 1, a shaft tube 2 is fixedly arranged at the lower end of one side of the eccentric butterfly valve 1, a driving motor 3 is fixedly installed at the lower end of the shaft tube 2, a rotating shaft 4 is fixedly arranged at the upper end of the rotating shaft of the driving motor 3, a valve flap 5 is fixedly arranged at the outer side of the rotating shaft 4 near the inner side of the eccentric butterfly valve 1, a filter assembly 6 is arranged inside one side of the eccentric butterfly valve 1, a cleaning assembly 7 is arranged at a position between the shaft tube 2 and the filter assembly 6 on the inner and outer sides of the eccentric butterfly valve 1, a supporting assembly 8 is arranged at the outer side of the eccentric butterfly valve 1 corresponding to the position of the filter assembly 6, and a hydraulic cylinder 9 is arranged at the lower side of the cleaning assembly 7, The filter assembly 6 includes an annular sleeve 61 movably arranged on the inner side of the eccentric butterfly valve 1, a filter screen 62 is rotatably arranged on the inner side of the annular sleeve 61, a plurality of groups of round blocks 63 are fixedly arranged on the outer side of the filter screen 62, annular grooves 64 are provided on the inner side of the annular sleeve 61 at positions corresponding to the plurality of groups of round blocks 63, fixed shafts 65 are fixedly arranged on the upper and lower ends of the annular sleeve 61, a groove 66 is provided at the connection between the upper one of the two groups of fixed shafts 65 and the annular sleeve 61, a circular shaft 67 is rotatably arranged on the inner side of the fixed shaft 65, a knob 68 is fixedly arranged on the upper end of the circular shaft 67, a disc 69 is fixedly arranged on the lower end of the circular shaft 67, and an arc-shaped sheet 610 is fixedly arranged on the lower end of the disc 69.

[0030] The valve disc 5 is sealingly arranged inside the eccentric butterfly valve 1, the hydraulic cylinder 9 is fixed on the cleaning assembly 7 through the mounting plate, the annular sleeve 61 is sealingly arranged inside the eccentric butterfly valve 1, the filter screen 62 is arranged in a double-layer structure, several groups of round blocks 63 are movable in the annular groove 64, two groups of fixed shafts 65 and the eccentric butterfly valve 1 are rotatably arranged, the disc 69 is sealingly fitted in the groove 66, and the two ends of the arc piece 610 are respectively close to the edge and the center position of the disc 69.

[0031] The water source is filtered through the filter 62 to filter the impurities in the water source, and the clean water source enters the inner side of the eccentric butterfly valve 1, reducing impurities and particulate matter, thereby reducing the wear on the valve, extending the service life of the valve, and preventing blockage inside the eccentric butterfly valve 1. The knob 68 drives the round shaft 67, the round piece 69, and the arc piece 610 to rotate. During the rotation process, the arc piece 610 will drive the round block 63 and the filter 62 to rotate in the annular sleeve 61, so as to cooperate with the cleaning component 7 to comprehensively clean the surface of the filter 62. The filter 62 can be rotated by the fixed shaft 65 on the lower side to turn over 180 degrees, and the double-layer structure of the filter 62 has a better filtering effect, and can be switched to reduce damage caused by water flow impact.

[0032] The cleaning assembly 7 includes a square sleeve 71 fixedly arranged at the lower side of the eccentric butterfly valve 1, a square box 72 is arranged inside the square sleeve 71, a sealing opening 73 is opened at the upper end of the square box 72, a fixed edge 74 is fixedly arranged on the outer side of the square box 72 near the lower end of the square sleeve 71, a sewage pipe 75 is fixedly arranged at the lower end of one side of the square box 72, a pipe cap 76 is arranged on the outer side of the sewage pipe 75, a round rod 77 is rotatably arranged inside the square box 72 near the other side, a sealing cover 78 is fixedly arranged on the outer side of the round rod 77 near the middle position, and a sealing cover 78 is fixedly arranged on the outer side of the round rod 77 near the sealing A brush 79 is fixedly provided at the lower side of the sealing cover 78, a slide groove 710 is provided on one side of the round rod 77 near the upper side of the sealing cover 78, a bump 711 is fixedly provided at the upper end of the eccentric butterfly valve 1 corresponding to the slide groove 710, a small gear 712 is sleeved on the outer side of the slide groove 710 near the upper end of the bump 711, a connecting ring 713 is fixedly provided at the lower end of the small gear 712, two groups of positioning shafts 714 are fixedly provided on the upper end of the eccentric butterfly valve 1 near the bump 711, and a large gear 715 is provided on the upper side of the rotating shaft 4 and on the outer side of a group of positioning shafts 714 near the bump 711.

[0033] The square sleeve 71 is fixed to the fixed edge 74 by bolts, the square box 72 is fixedly connected to the mounting plate, the sealing port 73 is communicated with the interior of the eccentric butterfly valve 1, the round rod 77 penetrates the interior of the eccentric butterfly valve 1, the square box 72, and the protrusion 711, the lower side of the round rod 77 is rotatably arranged with the telescopic rod of the hydraulic cylinder 9, the sealing cover 78 is adapted to the sealing port 73, the brush 79 is attached to one end of the filter screen 62, the pinion 712 is slidably arranged with the round rod 77 and the slide groove 710, the pinion 712 is meshed with the nearby large gear 715, the connecting ring 713 is arranged to rotate in the protrusion 711, one of the two groups of large gears 715 is fixedly arranged with the rotating shaft 4, the other group of the two groups of large gears 715 is rotatably arranged with the positioning shaft 714, the two groups of large gears 715 are meshed, and the rotation angle of the large gear 715 and the pinion 712 is two to one.

[0034] The water source enters the eccentric butterfly valve 1 from one side of the filter assembly 6, and the driving motor 3 drives the rotating shaft 4 and the valve disc 5 to rotate, so as to realize the opening and closing state of the eccentric butterfly valve 1. When the valve disc 5 is closed, a group of large gears 715 connected to the upper side of the rotating shaft 4 will be driven to rotate 90 degrees, and another group of large gears 715 and small gears 712 will be driven to rotate. When the driving motor 3 drives the valve disc 5 to rotate 90 degrees, the large gear 715 will drive the small gear 712 to rotate 180 degrees, and cooperate with the use of the hydraulic cylinder 9 to make the sealing port 73 closed. The sealing cover 78 in the middle rises upward and is driven by the pinion 712, the connecting ring 713 and the slide groove 710 to rotate 180 degrees, so that the brush 79 is attached to one end of the filter screen 62. In conjunction with the use of the filter assembly 6, the contact side is cleaned, and the cleaned impurities will be in the area between the valve disc 5 and the filter screen 62. After the sealing cover 78 comes out, the sealing port 73 is connected to the inside of the eccentric butterfly valve 1. By unscrewing the pipe cap 76, the internal water source and impurities will be discharged outward from the drain pipe 75, cleaning the dirt on the filter screen 62 and improving the use effect of the filter screen 62.

[0035] The support assembly 8 includes two groups of annular shells 81 that are sleeved on the outer side of the eccentric butterfly valve 1, two groups of handles 82 are fixedly set on the front and rear sides of the two groups of annular shells 81, and a plurality of groups of slope blocks 83 are fixedly set on the inner wall of the annular shells 81. Square grooves 84 are opened at positions between the corresponding groups of slope blocks 83 inside the eccentric butterfly valve 1, and limit blocks 85 are movably set on the inner sides of the square grooves 84. A U-shaped bar 86 is fixedly set at one end of the limit block 85, and a spring 87 is fixedly set between the inner wall of one side of the U-shaped bar 86 and the outer wall of the eccentric butterfly valve 1.

[0036] The two groups of annular shells 81 are positioned at the outer side of the eccentric butterfly valve 1 by bolts, and the limit blocks 85 arranged in the two groups of annular shells 81 are respectively located on both sides of the annular sleeve 61. The side of the annular shell 81 that fits the eccentric butterfly valve 1 is open, and several groups of slope blocks 83 are evenly arranged in a ring shape. Several groups of limit blocks 85 are sealed and fitted on the inner side of the square groove 84. The U-shaped strip 86 runs through the inside of the eccentric butterfly valve 1 to the inner side of the annular shell 81, and one side of the U-shaped strip 86 is set as an arc surface.

[0037] The two groups of annular shells 81 are pulled by the handle 82 to rotate on the outside of the eccentric butterfly valve 1, and the slope block 83 on the inner wall of the annular shell 81 will push the U-shaped strip 86 and the square groove 84 to move to the inside of the eccentric butterfly valve 1, and compress the spring 87 at the same time. The groups of square grooves 84 on both sides are respectively restricted on both sides of the annular sleeve 61, and then the annular shell 81 is positioned on the outside of the eccentric butterfly valve 1, and the two ends of the annular sleeve 61 are passed through to prevent the annular sleeve 61 from being offset under the impact of water flow.

[0038] Working principle: When in use, water enters the eccentric butterfly valve 1 from one side of the filter assembly 6, and the drive motor 3 drives the rotating shaft 4 and the valve disc 5 to rotate, so as to realize the opening and closing state of the eccentric butterfly valve 1. When the valve disc 5 is closed, a group of large gears 715 connected to the upper side of the rotating shaft 4 will be driven to rotate 90 degrees, and another group of large gears 715 and small gears 712 will be driven to rotate. When the drive motor 3 drives the valve disc 5 to rotate 90 degrees, the large gear 715 will drive the small gear 712 to rotate 180 degrees, and cooperate with the use of the hydraulic cylinder 9 to make the sealing cover closed in the sealing port 73 As the valve 78 rises upward, it is driven by the pinion 712, the connecting ring 713, and the slide 710 to rotate 180 degrees, so that the brush 79 is attached to one end of the filter screen 62, and the contact side is cleaned in cooperation with the use of the filter assembly 6. The cleaned impurities will be in the area between the valve disc 5 and the filter screen 62. After the sealing cover 78 comes out, the sealing port 73 is connected to the inside of the eccentric butterfly valve 1. By unscrewing the pipe cap 76, the internal water source and impurities will be discharged from the sewage pipe 75 to the outside, cleaning the dirt on the filter screen 62 and improving the use effect of the filter screen 62; and the water source passes through the filter screen 62 to remove the impurities in the water source. Filter, get clean water source to enter the inner side of eccentric butterfly valve 1, reduce impurities and particles, thereby reduce the wear of valve, extend the service life of valve, and cause the blockage inside eccentric butterfly valve 1, and drive the round shaft 67, round piece 69, arc piece 610 to rotate through knob 68, and the arc piece 610 will drive the round block 63 and filter screen 62 to rotate in the annular sleeve 61 during the rotation process, so as to cooperate with the cleaning component 7 to clean the surface of filter screen 62 comprehensively, and the filter screen 62 can be rotated by the fixed shaft 65 at the lower side to turn over 180 degrees, The double-layer structure of the filter screen 62 has a better filtering effect and can be switched for use, reducing damage caused by water flow impact. In addition, the two groups of circular shells 81 are pulled by the handle 82 to rotate on the outside of the eccentric butterfly valve 1, and the slope block 83 on the inner wall of the circular shell 81 will push the U-shaped bar 86 and the square groove 84 to move to the inside of the eccentric butterfly valve 1, and at the same time compress the spring 87. The several groups of square grooves 84 on both sides are respectively restricted on both sides of the circular sleeve 61, and then the circular shell 81 is positioned on the outside of the eccentric butterfly valve 1, and the two ends of the circular sleeve 61 are passed through to prevent the circular sleeve 61 from being offset under the impact of water flow.

[0039] The eccentric butterfly valve 1, shaft tube 2, drive motor 3, rotating shaft 4, valve disc 5, and filter screen 62 in the present invention are common knowledge in the field, and their working principles are already well-known technologies, and the models are selected according to actual use, so they will not be explained in detail.

[0040] 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. An eccentric butterfly valve with anti-clogging function, comprising an eccentric butterfly valve (1), characterized in that: A shaft tube (2) is fixedly provided at the lower end of one side of the eccentric butterfly valve (1), a driving motor (3) is fixedly mounted at the lower end of the shaft tube (2), a rotating shaft (4) is fixedly provided at the upper end of the rotating shaft of the driving motor (3), a valve flap (5) is fixedly provided at a position on the outer side of the rotating shaft (4) close to the inner side of the eccentric butterfly valve (1), a filter assembly (6) is provided inside one side of the eccentric butterfly valve (1), a cleaning assembly (7) is provided at a position between the shaft tube (2) and the filter assembly (6) on the inner and outer sides of the eccentric butterfly valve (1), a supporting assembly (8) is provided on the outer side of the eccentric butterfly valve (1) at a position corresponding to the filter assembly (6), a hydraulic cylinder (9) is provided at the lower side of the cleaning assembly (7), and the filter assembly (6) comprises a filter assembly (6) movably provided on the eccentric butterfly valve (1) An inner annular sleeve (61), a filter screen (62) is rotatably disposed on the inner side of the annular sleeve (61), a plurality of groups of round blocks (63) are fixedly disposed on the outer side of the filter screen (62), an annular groove (64) is provided on the inner side of the annular sleeve (61) at positions corresponding to the plurality of groups of round blocks (63), a fixed shaft (65) is fixedly disposed on the upper and lower ends of the annular sleeve (61), a groove (66) is provided at the connection between the upper one of the two groups of fixed shafts (65) and the annular sleeve (61), a circular shaft (67) is rotatably disposed on the inner side of the fixed shaft (65), a knob (68) is fixedly disposed on the upper end of the circular shaft (67), a circular sheet (69) is fixedly disposed on the lower end of the circular shaft (67), and an arc-shaped sheet (610) is fixedly disposed on the lower end of the circular sheet (69); The cleaning assembly (7) comprises a square sleeve (71) fixedly arranged at the lower side of the eccentric butterfly valve (1); a square box (72) is arranged on the inner side of the square sleeve (71); a sealing opening (73) is opened at the upper end of the square box (72); a fixed edge (74) is fixedly arranged on the outer side of the square box (72) near the lower end of the square sleeve (71); a sewage pipe (75) is fixedly arranged at the lower end of one side of the square box (72); a pipe cap (76) is provided on the outer side of the sewage pipe (75) through a thread; a round rod (77) is rotatably arranged inside the square box (72) near the other side; a sealing cover (78) is fixedly arranged on the outer side of the round rod (77) near the middle; and a sealing cover (78) is fixedly arranged on the outer side of the round rod (77) near the lower end. A brush (79) is fixedly provided near the lower side of the sealing cover (78); a slide groove (710) is provided on one side of the round rod (77) near the upper side of the sealing cover (78); a protrusion (711) is fixedly provided at the upper end of the eccentric butterfly valve (1) corresponding to the slide groove (710); a small gear (712) is sleeved on the outer side of the slide groove (710) near the upper end of the protrusion (711); a connecting ring (713) is fixedly provided at the lower end of the small gear (712); two groups of positioning shafts (714) are fixedly provided on the upper end of the eccentric butterfly valve (1) near the protrusion (711); and a large gear (715) is provided on the upper side of the rotating shaft (4) and on the outer side of a group of positioning shafts (714) near the protrusion (711); The support assembly (8) comprises two groups of annular shells (81) sleeved on the outside of the eccentric butterfly valve (1), two groups of handles (82) are fixedly arranged on the front and rear sides of the two groups of annular shells (81), a plurality of groups of ramp blocks (83) are fixedly arranged on the inner wall of the annular shells (81), square grooves (84) are provided at positions between the plurality of groups of ramp blocks (83) in the interior of the eccentric butterfly valve (1), and limit blocks (85) are movably arranged on the inner sides of the square grooves (84), a U-shaped strip (86) is fixedly arranged at one end of the limit block (85), and a spring (87) is fixedly arranged between the inner wall of one side of the U-shaped strip (86) and the outer wall of the eccentric butterfly valve (1); The valve flap (5) is sealingly arranged inside the eccentric butterfly valve (1), the hydraulic cylinder (9) is fixed to the cleaning assembly (7) via a mounting plate, the annular sleeve (61) is sealingly arranged inside the eccentric butterfly valve (1), the filter screen (62) is a double-layer structure, and a plurality of groups of the circular blocks (63) are movably arranged in the annular groove (64); The two sets of fixed shafts (65) and the eccentric butterfly valve (1) are rotatably arranged, the disc (69) is sealingly fitted in the groove (66), and the two ends of the arc-shaped piece (610) are respectively close to the edge and the center of the disc (69).

2. The eccentric butterfly valve with anti-clogging function according to claim 1, characterized in that: The square sleeve (71) is fixed to the fixed edge (74) by bolts, the square box (72) is fixedly connected to the mounting plate, the sealing opening (73) is communicated with the interior of the eccentric butterfly valve (1), the round rod (77) passes through the interior of the eccentric butterfly valve (1), the square box (72), and the protrusion (711), the lower side of the round rod (77) is rotatably arranged with the telescopic rod of the hydraulic cylinder (9), the sealing cover (78) is adapted to the sealing opening (73), the brush (79) is attached to one end of the filter screen (62), and the pinion (712) is slidably arranged with the round rod (77) and the slide groove (710).

3. The eccentric butterfly valve with anti-clogging function according to claim 1, characterized in that: The small gear (712) is meshed with a large gear (715) adjacent thereto; the connecting ring (713) is arranged to rotate in the protrusion (711); one of the two groups of large gears (715) is fixedly arranged with the rotating shaft (4); the other of the two groups of large gears (715) is rotatably arranged with the positioning shaft (714); the two groups of large gears (715) are meshed with each other; and the rotation angle between the large gear (715) and the small gear (712) is two to one.

4. The eccentric butterfly valve with anti-clogging function according to claim 1, characterized in that: The two groups of the annular shells (81) are positioned at the outer side of the eccentric butterfly valve (1) by means of bolts. The limit blocks (85) provided in the two groups of the annular shells (81) are respectively located at the two sides of the annular sleeve (61). The side of the annular shell (81) that fits the eccentric butterfly valve (1) is open. The plurality of groups of the slope blocks (83) are evenly arranged in a ring shape. The plurality of groups of the limit blocks (85) are sealed and fitted on the inner side of the square groove (84). The U-shaped strip (86) penetrates the interior of the eccentric butterfly valve (1) to the inner side of the annular shell (81). One side of the U-shaped strip (86) is provided as an arc surface.

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