A self-cleaning sewage filtering device

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a self-cleaning sewage filter device, comprising a shell, a guide plate, a filter plate, a cleaning component and a limit component. When the filter hole on the filter plate is blocked, the impact force of the sewage flow on the filter plate increases, the sewage impacts the filter plate and deflects, a first blocking plate gradually opens a first drainage groove on a fixed plate, the first drainage port is gradually blocked, and the second drainage port is gradually opened. After the filter plate is tilted, the sewage automatically flushes the surface of the filter plate, the flowing sewage cleans the impurities blocking the filter hole, the sewage discharged through the second drainage port is sewage containing a large amount of impurities, and the sewage discharged from the first drainage port can be directly further processed, thereby improving the efficiency of sewage treatment.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a self-cleaning sewage filtering device. Background Art

[0002] In production and daily life, sewage is inevitably generated. Directly discharging sewage into sewage treatment equipment will cause some particulate matter and waste residue to remain in the equipment, causing clogging of the equipment. Therefore, before treating sewage, it is necessary to pre-filter it to separate the solid impurity particles in the sewage from the sewage, classify the solid impurity particles in the sewage and centrally treat them to avoid the impurity particles in the sewage from affecting the subsequent sewage treatment. However, when pre-filtering the sewage, the filter screen is easily clogged, which reduces the filtration efficiency. The filter screen of the existing filtration device is easily clogged during operation. In most cases, it is necessary to shut down or even disassemble the device to clean the filter screen, which will reduce the filtration efficiency. Summary of the invention

[0003] The invention provides a self-cleaning sewage filtering device to solve the problem of low filtering efficiency when the existing filtering device treats sewage.

[0004] A self-cleaning sewage filtering device of the present invention adopts the following technical scheme:

[0005] A self-cleaning sewage filtering device comprises a housing, a guide plate, a filter plate, a cleaning component and a limit component;

[0006] The shell is hollow inside, and has a water inlet, a first drain outlet and a second drain outlet that penetrate inside and outside; at most one of the first drain outlet and the second drain outlet is in an open state; the guide plate is fixedly arranged inside the shell, and the guide plate can guide the sewage to flow in a fixed direction inside the shell; a plurality of filter holes are arranged on the filter plate, and the filter plate is arranged inside the shell, and the sewage can flow through the filter plate when flowing along the guide plate; the cleaning component includes a fixed plate and a first blocking plate, and the fixed plate is fixedly arranged inside the shell, and the fixed plate has a first drain groove; the filter plate is rotatably connected to the fixed plate; the first blocking plate can be slidably arranged on the fixed plate, and when the filter plate rotates on the fixed plate, the first blocking plate slides on the fixed plate, and the first blocking plate blocks the first drain groove. When the first blocking plate blocks the first drain groove, the first drain outlet is blocked and the second drain outlet is opened; the limiting component can limit the deflection of the filter plate, and release the limit on the deflection of the filter plate when the filter hole is blocked.

[0007] Furthermore, the cleaning assembly also includes a first auxiliary plate, a second auxiliary plate and a pushing plate; the first auxiliary plate is arranged parallel to one side of the fixed plate, one end of the first auxiliary plate is rotatably connected to the filter plate, and in the initial state, the first auxiliary plate abuts against the guide plate; the second auxiliary plate is arranged between the first auxiliary plate and the fixed plate, one end of the second auxiliary plate is rotatably connected to the first auxiliary plate, and the other end of the second auxiliary plate is rotatably connected to the fixed plate; the pushing plate is arranged between the first auxiliary plate and the fixed plate, one end of the pushing plate is slidably connected to the first auxiliary plate, and the other end of the pushing plate is fixedly connected to the fixed plate, and a first cylinder is fixedly arranged on the fixed plate, and when the first cylinder is started, it can drive the pushing plate to slide along the fixed plate.

[0008] Furthermore, a second drainage groove is arranged on the pushing plate, and a second sealing plate is slidingly arranged on the pushing plate, and the second sealing plate can block the second drainage groove. When the pushing plate abuts against the second auxiliary plate, the second sealing plate blocks the second drainage groove. When the pushing plate abuts against the filter plate, the second sealing plate releases the blockage of the second drainage groove.

[0009] Furthermore, a force storage member is provided at the connection between the second auxiliary plate and the fixed plate, and the force storage member is in a force storage state in an initial state.

[0010] Furthermore, the limit assembly includes a limit rod, a slide groove is provided on the inner side wall of the shell, the limit rod is slidably arranged along the slide groove, one end of the limit rod has a first inclined surface and a second inclined surface, the inclination angles of the first inclined surface and the second inclined surface are different, and a first elastic member is provided between the other end of the limit rod and the end of the slide groove. When the first elastic member is at its original length, the first inclined surface and the second inclined surface are both on the outside of the slide groove, and the limit gear rod can prevent the filter plate from deflecting.

[0011] Furthermore, both upper and lower ends of the first blocking plate are fixedly connected with traction ropes, the traction rope at the upper end of the first blocking plate is fixedly connected to the filter plate, and the traction rope at the lower end of the first blocking plate is fixedly connected to the second auxiliary plate.

[0012] Furthermore, a first adjustment groove with an upward opening is provided on the second auxiliary plate, and the first adjustment groove has an inclined lower end surface. A first adjustment rod is fixedly provided on the second sealing plate, and the first adjustment rod can enter the first adjustment groove. When the pushing plate approaches the second auxiliary plate, the second sealing plate can block the second drainage groove.

[0013] Furthermore, a second adjustment groove with an opening facing downward is provided on the filter plate; a second adjustment rod is fixedly provided on the second sealing plate, and the second adjustment rod is perpendicular to the second sealing plate. When the second sealing plate approaches the filter plate, the second sealing plate releases the blockage of the second drainage groove.

[0014] Furthermore, the force storage member is a force storage torsion spring, and a force storage detector is provided on the force storage torsion spring. The output signal of the force storage detector can control the extension or contraction of the first cylinder.

[0015] The beneficial effects of the present invention are as follows: a self-cleaning sewage filter device of the present invention comprises a shell, a guide plate, a filter plate, a cleaning component and a limiting component. When the sewage is pre-treated, the sewage is passed into the shell from the water inlet of the shell. Under the action of the guide plate, the sewage flows in a fixed direction. Under the guidance of the guide plate, the sewage is filtered by the filter plate and then discharged from the first drain port. When the filter hole on the filter plate is blocked, the impact force of the sewage flow on the filter plate increases, the limiting component releases the limit on the deflection of the filter plate, the sewage impacts the filter plate and deflects, the first blocking plate gradually opens the first drainage groove on the fixed plate, the first drainage port is gradually blocked, and the second drainage port is gradually opened. After the filter plate is tilted, the sewage automatically flushes the surface of the filter plate, the flowing sewage cleans the impurities blocking the filter hole, the sewage discharged through the second drainage port is sewage containing a large amount of impurities, and the sewage discharged from the first drainage port can be directly further processed, thereby improving the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic structural diagram of a self-cleaning sewage filtering device provided by an embodiment of the present invention;

[0018] Figure 2 A cross-sectional view of a self-cleaning sewage filtering device provided by another embodiment of the present invention;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 A schematic structural diagram of a self-cleaning sewage filter device provided by another embodiment of the present invention with the shell hidden;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Figure 6 A schematic structural diagram of a push plate and a second blocking plate in a self-cleaning sewage filtering device provided by another embodiment of the present invention;

[0023] Figure 7A cross-sectional isometric view of a self-cleaning sewage filter device provided in another embodiment of the present invention;

[0024] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0025] Fig. 9 A state diagram of a self-cleaning sewage filter device provided by another embodiment of the present invention when the filter holes are not blocked;

[0026] Fig.10 A state diagram of cleaning blocked filter holes in a self-cleaning sewage filter device provided in another embodiment of the present invention.

[0027] In the figure: 110, shell; 111, filter chamber; 112, water inlet; 113, first drain outlet; 114, second drain outlet; 120, guide plate; 130, filter plate; 131, filter hole; 210, fixing plate; 211, first drain groove; 220, first blocking plate; 230, first auxiliary plate; 240, second auxiliary plate; 250, push plate; 251, second drain groove; 260, first cylinder; 270, limit rod; 271, first inclined plane; 272, second inclined plane; 280, second blocking plate; 281, first adjusting rod; 282, second adjusting rod; 310, force storage torsion spring; 320, traction rope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] like Figures 1 to 10 As shown, a self-cleaning sewage filtering device provided by an embodiment of the present invention includes a housing 110, a guide plate 120, a filter plate 130, a cleaning component and a limiting component.

[0032] The shell 110 extends left and right, and the interior of the shell 110 is hollow, forming a filter chamber 111. The shell 110 has a water inlet 112, a first drain port 113, and a second drain port 114 that penetrate inside and outside. Sewage can enter the filter chamber 111 from the water inlet 112, and the sewage can be discharged from the filter chamber 111 from the first drain port 113 or the second drain port 114. The first drain port 113 is located on the right side of the filter chamber 111. The first drain port 113 is connected to a first conduit, and the other end of the first conduit is connected to a sewage treatment tank. The sewage discharged from the first drain port 113 can be directly further treated. The second drain port 114 is located on the lower left side of the filter chamber 111. The second drain port 114 is connected to a second conduit, and the second conduit is connected to a sludge treatment tank. At most one of the first drain port 113 and the second drain port 114 is opened.

[0033] The guide plate 120 is fixedly disposed inside the shell 110 . The guide plate 120 is disposed horizontally. The guide plate 120 can guide the sewage to flow in a fixed direction inside the shell 110 .

[0034] A plurality of filter holes 131 are provided on the filter plate 130 . The filter plate 130 is disposed inside the housing 110 . The sewage can flow through the filter plate 130 when flowing along the guide plate 120 .

[0035] The cleaning assembly includes a first auxiliary plate 230, a second auxiliary plate 240, a push plate 250, a fixed plate 210 and a first blocking plate 220. The fixed plate 210 is vertically arranged, extends forward and backward, and has a left side wall and a right side wall. The fixed plate 210 is arranged inside the housing 110, and the fixed plate 210 is located on a side close to the first drain port 113. The fixed plate 210 is provided with a first drainage groove 211 penetrating the side wall of the fixed plate 210, and sewage can flow to the first drain port 113 through the first drainage groove 211. The filter plate 130 is horizontally arranged and extends in the left-right direction. The right end of the filter plate 130 is rotatably mounted on the upper end of the fixed plate 210. The first sealing plate 220 is arranged on the right side wall of the fixed plate 210. The first sealing plate 220 can slide up and down along the fixed plate 210. When the first sealing plate 220 slides up and down, it can block or open the first drainage groove 211. When the first sealing plate 220 blocks the first drainage groove 211, sewage cannot flow to the first drainage port 113 through the first drainage groove 211.

[0036] The first auxiliary plate 230 is vertically arranged on the left side of the fixed plate 210, and the left end of the filter plate 130 is rotatably connected to the upper end of the first auxiliary plate 230. In the initial state, the upper end of the first auxiliary plate 230 abuts against the lower surface of the guide plate 120. In the initial state, the second auxiliary plate 240 is horizontally arranged, and the second auxiliary plate 240 extends left and right. The left end of the second auxiliary plate 240 is rotatably connected to the lower end of the first auxiliary plate 230, and the right end of the second auxiliary plate 240 is rotatably connected to the lower end of the fixed plate 210. Then, the first auxiliary plate 230, the second auxiliary plate 240, the fixed plate 210 and the filter plate 130 form a rectangular frame. In the initial state, the first auxiliary plate 230 and the second auxiliary plate 240 are used to prevent the sewage from flowing to the left, that is, the sewage cannot be discharged from the second drain port 114. The pushing plate 250 is arranged parallel to the top of the second auxiliary plate 240. The pushing plate 250 is between the first auxiliary plate 230 and the fixed plate 210. The left end of the pushing plate 250 is slidably connected to the first auxiliary plate 230, and the right end of the pushing plate 250 is slidably connected to the fixed plate 210. A first cylinder 260 is fixedly arranged on the fixed plate 210, and the extended end of the first cylinder 260 is fixedly connected to the pushing plate 250. The extension or shortening of the first cylinder 260 can pull the pushing plate 250 to slide up and down, that is, the first cylinder 260 can drive the pushing plate 250 to slide up and down along the fixed plate 210.

[0037] The limiting assembly can limit the deflection of the filter plate 130, and release the limit on the deflection of the filter plate 130 when the filter hole 131 is blocked. Specifically, the limiting assembly includes a limiting rod 270, and a slide groove is provided on the inner side wall of the housing 110, and the slide groove extends in the front-to-back direction ( Figure 2In the direction shown, the upper right side of the figure is the rear side, and the lower left side of the figure is the front side), the limit rod 270 is horizontally arranged, and the limit rod 270 is slidably arranged along the slide groove. One end of the limit rod 270 is always in the slide groove, and the other end of the limit rod 270 has a first inclined surface 271 and a second inclined surface 272. The first inclined surface 271 and the second inclined surface 272 are separated by a reference horizontal axis extending in the left and right directions. The reference horizontal axis is above the axis of the limit rod 270, the first inclined surface 271 is above the second inclined surface 272, and the inclination angle of the first inclined surface 271 is greater than the inclination angle of the second inclined surface 272. A first elastic member is arranged between one end of the limiting rod 270 which is in the slide groove and the end of the slide groove. Specifically, the first elastic member is a first spring. In the initial state, the first spring is in the original length state, and one end of the limiting rod 270 which is provided with the first inclined surface 271 and the second inclined surface 272 is located outside the limiting groove. Then, when the first spring is in the original length, the limiting lever can prevent the filter plate 130 from deflecting, and in the initial state, under the action of the limiting rod 270, the filter plate 130 is in a horizontal state. At the same time, according to the setting of the first inclined surface 271 and the second inclined surface 272, the force required for the filter plate 130 to deflect downward is greater than the force required for the filter plate 130 to deflect upward.

[0038] In another embodiment, a second drainage groove 251 is provided on the pushing plate 250 which runs through the upper and lower parts, and a second sealing plate 280 is slidably provided on the pushing plate 250. The second sealing plate 280 can block the second drainage groove 251 when sliding on the pushing plate 250. When the pushing plate 250 abuts against the second auxiliary plate 240, the second sealing plate 280 blocks the second drainage groove 251. When the pushing plate 250 abuts against the filter plate 130, the second sealing plate 280 releases the blockage of the second drainage groove 251. Specifically, the second auxiliary plate 240 is provided with a first adjustment groove with an upward opening, the first adjustment groove has an inclined lower end surface, the second blocking plate 280 is fixedly provided with a first adjustment rod 281, the first adjustment rod 281 is perpendicular to the lower surface of the second blocking plate 280, when the push plate 250 approaches the second auxiliary plate 240, the first adjustment rod 281 can enter the first adjustment groove, when the push plate 250 approaches the second auxiliary plate 240, the first adjustment rod 281 slides in the first adjustment groove, and the second blocking plate 280 slides on the push plate 250, so that the second blocking plate 280 gradually blocks the second drainage groove 251. Further, the filter plate 130 is provided with a second adjustment groove with a downward opening. A second adjusting rod 282 is fixedly provided on the second sealing plate 280, and the second adjusting rod 282 is perpendicular to the second sealing plate 280 in the horizontal direction. When the pushing plate 250 approaches the filter plate 130, one end of the second adjusting rod 282 enters the second adjusting groove. As the pushing plate 250 further approaches the filter plate 130, the second sealing plate 280 slides horizontally on the pushing plate 250, so that the second sealing plate 280 gradually releases the blockage of the second drainage groove 251.

[0039] In another embodiment, a force storage member is provided at the connection between the second auxiliary plate 240 and the fixed plate 210, and in the initial state, the force storage member is in a force storage state. Specifically, the force storage member is a force storage torsion spring 310, and in the initial state, the force storage torsion spring 310 is in a force storage state. Under the action of the force storage torsion spring 310, the second auxiliary plate 240 always has a tendency to deflect upward, that is, the filter plate 130 always has a tendency to deflect upward. Further, a force storage detector is provided on the force storage torsion spring 310, and the output signal of the force storage detector can control the extension or shortening of the first cylinder 260. When the force storage of the force storage torsion spring 310 increases, the output signal of the force storage detector controls the first cylinder 260 to gradually extend, and the first cylinder 260 drives the push plate 250 to approach the filter plate 130. When the stored force of the stored force torsion spring 310 decreases, the output signal of the stored force detector controls the first cylinder 260 to gradually shorten, and the first cylinder 260 drives the push plate 250 to approach the second auxiliary plate 240. In the initial state, the first cylinder 260 is in the shortest state, and the second drainage groove 251 of the push plate 250 is in a state of being blocked by the second blocking plate 280.

[0040] In another embodiment, the upper and lower ends of the first blocking plate 220 are fixedly connected with traction ropes 320, the traction rope 320 at the upper end of the first blocking plate 220 is fixedly connected to the filter plate 130, and the traction rope 320 at the lower end of the first blocking plate 220 is fixedly connected to the second auxiliary plate 240. When the filter plate 130 or the second auxiliary plate 240 deflects, the filter plate 130 or the second auxiliary plate 240 pulls the first blocking plate 220 to slide on the fixed plate 210 through the traction rope 320.

[0041] In combination with the above embodiments, the use principle and working process of a self-cleaning sewage filter device provided by the embodiment of the present invention are as follows:

[0042] During operation, the sewage to be filtered enters the filter chamber 111 from the water inlet 112 of the shell 110 and gradually flows to the right under the action of the guide plate 120. At the same time, under the action of the guide plate 120, the sewage is filtered by the filter plate 130 and discharged from the filter chamber 111 from the first drain port 113.

[0043] In the initial state, the end of the limiting rod 270 provided with the first inclined surface 271 and the second inclined surface 272 is located outside the chute, and the limiting rod 270 hinders the deflection of the filter plate 130, so the filter plate 130 is in a horizontal state. When sewage is introduced into the filter chamber 111, the flowing sewage has a certain impact force on the filter plate 130. If the filter holes 131 on the filter plate 130 are not blocked, the impact force of the sewage on the filter plate 130 is not enough to cause the deflection of the filter plate 130. In other words, when the filter holes 131 on the filter plate 130 are not blocked, the impact force of the sewage on the filter plate 130 is not enough to overcome the restriction of the limiting rod 270 on the filter plate 130. In the initial state, the push plate 250 abuts against the second auxiliary plate 240, and the second drainage groove 251 on the push plate 250 is blocked by the second blocking plate 280. In the initial state, the horizontal filter plate 130 and the horizontal second auxiliary plate 240 do not pull the traction rope 320, so the first blocking plate 220 does not block the first drainage groove 211 on the fixed plate 210, and the sewage can be filtered by the filter plate 130 and then flow to the first drainage port 113 through the first drainage groove 211 on the fixed plate 210. In the initial state, the upper end of the first auxiliary plate 230 abuts the guide plate 120, and the second auxiliary plate 240 and the first auxiliary plate 230 jointly prevent the sewage from flowing to the left. In the initial state, the sewage cannot flow outward through the second drainage port 114. As shown in the attached figure Fig. 9 The arrow direction is the flow direction of sewage when the filter holes 131 on the filter plate 130 are not blocked by impurities.

[0044] As the sewage is filtered, the filter holes 131 on the filter plate 130 are gradually clogged by impurities in the sewage, and the impact force of the sewage on the filter plate 130 gradually increases. When the impact force of the sewage on the filter plate 130 increases to a certain extent, the limit rod 270 is not enough to hinder the deflection of the filter plate 130, and the filter plate 130 pushes the limit rod 270 to slide along the slide slot, and the limit rod 270 squeezes the first spring in the slide slot. As the filter net deflects, the filter plate 130 pulls the first blocking plate 220 through the traction rope 320 to block the first drainage groove 211 on the fixed plate 210, so that the sewage cannot flow to the first drainage port 113 through the first drainage groove 211 on the fixed plate 210. At this time, the upper end of the first auxiliary plate 230 no longer abuts the guide plate 120, and the first auxiliary plate 230 and the second auxiliary plate 240 cannot hinder the sewage from flowing to the left. As shown in the attached figure Fig.10 The arrow direction is the flow direction of sewage after the filter holes 131 on the filter plate 130 are blocked by impurities.

[0045] When the filter plate 130 deflects downward, the sewage flows on the surface of the filter plate 130, and the impurities on the surface of the filter plate 130 are washed away by the flowing sewage. The sewage flows leftward under the guidance of the filter plate 130, and the sewage carrying the impurities is discharged from the second drain port 114 to the outside of the filter chamber 111. The impurities in the sewage enter the sludge treatment tank along the second drain port 114, and the impurities are uniformly treated in the sludge treatment tank.

[0046] When the filter plate 130 deflects downward, the stored force of the return torsion spring between the second auxiliary plate 240 and the fixed plate 210 increases, and a stored force detector is provided on the stored force torsion spring 310, and the output signal of the stored force detector can control the extension or shortening of the first cylinder 260. When the stored force of the stored force torsion spring 310 increases, the output signal of the stored force detector controls the first cylinder 260 to gradually extend, and the first cylinder 260 drives the push plate 250 to approach the filter plate 130. At this time, the second drainage groove 251 on the push plate 250 is blocked by the second blocking plate 280. Since the first drainage groove 211 on the fixed plate 210 is blocked by the first blocking plate 220 at this time, when the push plate 250 approaches the filter plate 130, the filtered sewage between the push plate 250 and the filter plate 130 flows upward from the filter hole 131 again, so as to realize the backwash cleaning of the filter hole 131 on the filter plate 130. As the pushing plate 250 approaches the filter plate 130, the sewage flowing along the filter plate 130 further strengthens the scouring of the filter holes 131. Since the gap between the pushing plate 250 and the filter plate 130 is reduced, the sewage cannot enter between the pushing plate 250 and the filter plate 130 from the filter holes 131 on the filter plate 130.

[0047] When the push plate 250 is further close to the filter plate 130, the end of the second adjustment rod 282 fixedly arranged on the second blocking plate 280 gradually enters the second adjustment groove. As the push plate 250 abuts against the filter plate 130, the second blocking plate 280 slides on the push plate 250, so that the second blocking plate 280 gradually releases the blocking of the second drainage groove 251. At this time, the sewage can flow downward through the filter hole 131, and the flow impact force of the sewage on the filter plate 130 is reduced. The force storage torsion spring 310 gradually drives the second auxiliary plate 240 to reset under the action of the reset force. Since the slope of the first inclined surface 271 arranged on the limit rod 270 is greater than the slope of the second inclined surface 272, and the force storage torsion spring 310 is in the force storage state in the initial state, the force storage torsion spring 310 can push the second auxiliary plate 240 to return to the initial state, and the upper end of the first auxiliary plate 230 returns to the state of abutting against the guide plate 120. When the second auxiliary plate 240 is reset to the initial state, the second auxiliary plate 240 pulls the first blocking plate 220 to slide on the fixed plate 210 through the traction rope 320 , so that the first blocking plate 220 gradually stops blocking the first drain groove 211 . When the force storage torsion spring 310 is reset, the force storage of the force storage torsion spring 310 is reduced, and the output signal of the force storage detector controls the first cylinder 260 to gradually shorten. The first cylinder 260 gradually pulls the push plate 250 toward the second auxiliary plate 240, and the lower end of the first adjustment rod 281 enters the first adjustment groove. When the push plate 250 further approaches the second auxiliary plate 240, the first adjustment rod 281 slides in the first adjustment groove, and the second blocking plate 280 slides on the push plate 250, so that the second blocking plate 280 gradually blocks the second drainage groove 251. When the push plate 250 abuts against the second auxiliary plate 240, the second blocking plate 280 blocks the second drainage groove 251, and the sewage is filtered by the filter plate 130 again and flows to the first drainage port 113 through the first drainage groove 211.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning sewage filtering device, characterized in that: include: A shell (110), wherein the interior of the shell (110) is hollow, and the shell (110) has a water inlet (112) penetrating from the inside to the outside, a first drain outlet (113), and a second drain outlet (114); at most one of the first drain outlet (113) and the second drain outlet (114) is in an open state; A guide plate (120), the guide plate (120) being fixedly arranged inside the shell (110), and the guide plate (120) being capable of guiding sewage to flow in a fixed direction inside the shell (110); A filter plate (130), wherein a plurality of filter holes (131) are provided on the filter plate (130), and the filter plate (130) is arranged inside the housing (110), and sewage can flow through the filter plate (130) when flowing along the guide plate (120); A cleaning assembly, the cleaning assembly comprising a fixed plate (210) and a first blocking plate (220), the fixed plate (210) being fixedly arranged inside a housing (110), the fixed plate (210) being provided with a first drainage groove (211); the filter plate (130) being rotatably connected to the fixed plate (210); the first blocking plate (220) being slidably arranged on the fixed plate (210), when the filter plate (130) is rotated on the fixed plate (210), the first blocking plate (220) slides on the fixed plate (210), the first blocking plate (220) blocks the first drainage groove (211), and when the first blocking plate (220) blocks the first drainage groove (211), the first drainage outlet (113) is blocked and the second drainage outlet (114) is opened; A limiting component, the limiting component being capable of limiting the deflection of the filter plate (130), and releasing the limiting of the deflection of the filter plate (130) when the filter hole (131) is blocked; The cleaning assembly further comprises a first auxiliary plate (230), a second auxiliary plate (240) and a pushing plate (250); the first auxiliary plate (230) is arranged parallel to one side of the fixed plate (210), one end of the first auxiliary plate (230) is rotatably connected to the filter plate (130), and in an initial state, the first auxiliary plate (230) is in contact with the guide plate (120); the second auxiliary plate (240) is arranged between the first auxiliary plate (230) and the fixed plate (210), one end of the second auxiliary plate (240) is rotatably connected to the first auxiliary plate (230), and the other end of the second auxiliary plate (240) is rotatably connected to the fixed plate (210); The push plate (250) is arranged between the first auxiliary plate (230) and the fixed plate (210); one end of the push plate (250) is slidably connected to the first auxiliary plate (230); the other end of the push plate (250) is fixedly connected to the fixed plate (210); a first cylinder (260) is fixedly arranged on the fixed plate (210); and when the first cylinder (260) is started, it can drive the push plate (250) to slide along the fixed plate (210).

2. A self-cleaning sewage filtering device according to claim 1, characterized in that: A second drainage groove (251) is provided on the pushing plate (250), and a second blocking plate (280) is slidably provided on the pushing plate (250). The second blocking plate (280) can block the second drainage groove (251); when the pushing plate (250) abuts against the second auxiliary plate (240), the second blocking plate (280) blocks the second drainage groove (251); when the pushing plate (250) abuts against the filter plate (130), the second blocking plate (280) releases the blockage of the second drainage groove (251).

3. A self-cleaning sewage filtering device according to claim 2, characterized in that: A force storage member is provided at the connection between the second auxiliary plate (240) and the fixed plate (210), and the force storage member is in a force storage state in an initial state.

4. A self-cleaning sewage filter device according to claim 1, characterized in that: The limiting assembly comprises a limiting rod (270), an inner side wall of the housing (110) is provided with a slide groove, the limiting rod (270) is slidably arranged along the slide groove, one end of the limiting rod (270) has a first inclined surface (271) and a second inclined surface (272), the first inclined surface (271) and the second inclined surface (272) have different inclination angles, a first elastic member is provided between the other end of the limiting rod (270) and the end of the slide groove, when the first elastic member is at its original length, the first inclined surface (271) and the second inclined surface (272) are both located outside the slide groove, and the limiting lever can prevent the filter plate (130) from deflecting.

5. A self-cleaning sewage filtering device according to claim 3, characterized in that: The upper and lower ends of the first blocking plate (220) are both fixedly connected with traction ropes (320); the traction rope (320) at the upper end of the first blocking plate (220) is fixedly connected to the filter plate (130); and the traction rope (320) at the lower end of the first blocking plate (220) is fixedly connected to the second auxiliary plate (240).

6. A self-cleaning sewage filtering device according to claim 2, characterized in that: The second auxiliary plate (240) is provided with a first adjustment groove with an upward opening, the first adjustment groove having an inclined lower end surface, and the second blocking plate (280) is fixedly provided with a first adjustment rod (281), the first adjustment rod (281) can enter the first adjustment groove, and when the push plate (250) approaches the second auxiliary plate (240), the second blocking plate (280) can block the second drainage groove (251).

7. A self-cleaning sewage filtering device according to claim 2, characterized in that: The filter plate (130) is provided with a second adjustment groove with an opening facing downwards; the second sealing plate (280) is fixedly provided with a second adjustment rod (282), the second adjustment rod (282) being perpendicular to the second sealing plate (280); when the second sealing plate (280) approaches the filter plate (130), the second sealing plate (280) releases the blockage of the second drainage groove (251).

8. A self-cleaning sewage filtering device according to claim 3, characterized in that: The force storage member is a force storage torsion spring (310), and a force storage detector is provided on the force storage torsion spring (310). The output signal of the force storage detector can control the extension or contraction of the first cylinder (260).

Images