Shoe factory wastewater treatment device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a shoe factory wastewater treatment device which comprises a filter tank, a water inlet pipe is fixedly connected to the top of the filter tank, a grid is fixedly connected to the interior of the filter tank, a drainage pipe is fixedly connected to the front side of the filter tank, and a cleaning mechanism is arranged above the grid; and the cleaning mechanism comprises a vertical rod and two first movable rods, the cleaning mechanism is arranged, the vertical rod is driven by a hydraulic cylinder, the first movable rods and a push plate are driven, and leather fragments accumulated on the grating can be automatically cleaned. During cleaning, the push plate can turn over according to the movement of the vertical rod to shovel up leather fragments adhered by greasy dirt on the grating and push the leather fragments to the sewage draining exit, automatic collection and discharge of impurities are realized in cooperation with the sewage draining exit and the garbage pool, the situation that excessive impurities are accumulated on the grating to affect the filtering effect is effectively avoided, normal operation of a first defense line of a wastewater treatment system is guaranteed, and the service life of the system is prolonged. And a good foundation is laid for subsequent treatment procedures.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically provides a shoe factory wastewater treatment device. Background Art

[0002] The pollutants in the shoe factory sewage treatment system are relatively complex, mainly originating from the raw materials, auxiliaries used in different production links during the shoe-making process and the generated waste. These pollutants can be roughly classified into several categories, including organic pollutants, suspended solids, heavy metals, acid-base substances and other pollutants. The grille is the first line of defense in sewage treatment, mainly composed of a group of parallel metal bars or screens. When the shoe factory sewage flows into the treatment system, the grille can intercept larger suspended solids and floating objects in the sewage, such as leather scraps, rubber particles, fibers, etc. If these large particle impurities are not removed in time, they will clog the pipes, valves and pump bodies of the subsequent treatment equipment, affecting the normal operation of the equipment.

[0003] According to a sewage treatment sedimentation tank disclosed in a Chinese patent with the publication number "CN219709331U", it includes a filtration tank. A filter plate is fixedly installed in the middle of the inner wall of the filtration tank. An ultrasonic oscillator is fixedly installed on one inner wall of the filtration tank. A conduit is connected to the bottom on the side of the filtration tank away from the ultrasonic oscillator. The other end of the conduit is connected to a first centrifugal tank. A first rotating shaft is movably installed at the center of the bottom of the inner wall of the first centrifugal tank. A number of stirring rods are fixedly installed on the outer side of the first rotating shaft. A first rotating motor is movably installed at the top of the first rotating shaft. A connecting pipe is connected to the bottom on the side of the first centrifugal tank away from the conduit. The other end of the connecting pipe is connected to a second centrifugal tank. A second rotating shaft is movably installed at the center of the bottom of the inner wall of the second centrifugal tank. A threaded plate is fixedly installed on the outer side of the second rotating shaft. A second rotating motor is movably installed at the bottom of the second rotating shaft. Compared with the traditional sedimentation method, the sewage treatment is more efficient and thorough, and the sedimentation speed and drainage speed are faster and easier to control.

[0004] When the above patent is in use, the leather scraps in the sewage are intercepted by the grille. However, after long-term use, too many leather fragments may accumulate on the grille, thus affecting the filtering effect of the grille. Therefore, a shoe factory wastewater treatment device is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a shoe factory wastewater treatment device for the deficiencies in the above-mentioned prior art.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a shoe factory wastewater treatment device, including a filtration tank. A water inlet pipe is fixedly connected to the top of the filtration tank. By setting the water inlet pipe, the wastewater discharged from the shoe factory is introduced into the filtration tank. A grille is fixedly connected to the inside of the filtration tank. The leather fragments in the wastewater are filtered by the grille. A drain pipe is fixedly connected to the front of the filtration tank. By setting the drain pipe, the water filtered from the leather fragments is discharged from the filtration tank. A cleaning mechanism is arranged above the grille;

[0007] The cleaning mechanism includes a vertical rod, two first movable rods, a trapezoidal convex block, a first chute, a first slider, a second chute, a second slider, and a hydraulic cylinder;

[0008] The top end of the vertical rod slides through the grille through a linear bearing and extends upward. The bottom end of the hydraulic cylinder is fixedly connected to the inner wall of the bottom of the filtration tank. The top end of the hydraulic cylinder is fixedly connected to the bottom end of the vertical rod. The opposite ends of the two first movable rods are hinged to the middle of the vertical rod. A push plate is hinged to the bottom end of the first movable rod. The push plate is trapezoidal strip-shaped and contacts the upper surface of the grille. A first chute is opened on the inner wall of the back of the filtration tank. Two first sliders are slidably connected to the inside of the first chute. A second chute is opened on the front of the first slider. Two second sliders are slidably connected to the inside of the second chute. The push plate is fixedly connected to the front of the second slider.

[0009] Preferably, sewage outlets are penetrated through the inner walls on the left and right sides of the filtration tank. A baffle is arranged outside the sewage outlets. An inclined plate is arranged at the bottom of the sewage outlets. Garbage bins are arranged on the left and right sides of the filtration tank and are respectively arranged below the two sewage outlets.

[0010] Preferably, a cleaning mechanism is arranged above the grille. The cleaning mechanism includes four first cross bars. The opposite ends of the four first cross bars are fixedly connected to the vertical rod and are arranged above the push plate. The opposite ends of the four first cross bars are rotatably penetrated through a first horizontal shaft through bearings. Drum brushes are fixedly connected to both ends of the first horizontal shaft. The drum brushes contact the inner wall of the filtration tank. The other ends of the drum brushes far from the first horizontal shaft are fixedly connected with rollers. The rollers are slidably connected to the inner wall of the filtration tank. By setting the drum brushes, the impurities adhered to the inner wall of the filtration tank are cleaned.

[0011] Preferably, a third chute is penetrated through the middle of the first cross bar. A third slider is slidably connected to the inside of the third chute. A plurality of scraping blades are fixedly connected to one side of the third slider and contact the drum brush. A semi-toothed gear is fixedly connected to the drum brush. A transmission tooth is fixedly connected to one side of the third slider. The transmission tooth meshes with the semi-toothed gear. By setting the scraping blades, the impurities adhered to the bristles of the drum brush are scraped off.

[0012] Preferably, a spring is arranged inside the third sliding groove. The top end of the spring is fixedly connected to the third slider, and the bottom end of the spring is fixedly connected to the bottom inner wall of the third sliding groove. By arranging the spring, the third slider is driven to rebound.

[0013] Preferably, a dredging mechanism is arranged below the grille. The dredging mechanism includes a plurality of second cross bars, and the plurality of second cross bars are fixedly connected by connecting rods. The top of the second cross bar is fixedly connected with a dredging rod, and the plurality of dredging rods correspond to a plurality of filter holes on the grille one by one. By inserting the dredging rod into the filter hole and ejecting the blocked impurities in the filter hole.

[0014] Preferably, an elastic airbag is sleeved outside the dredging rod. The upper surface of the elastic airbag contacts the lower surface of the grille. The inner wall of the elastic airbag is connected with an air pipe, and the top end of the air pipe penetrates through the dredging rod and extends upward. By squeezing the elastic airbag by the grille and ejecting gas through the air pipe, the blocked impurities in the filter hole are ejected by the impact force and frictional force generated by the high-speed air flow.

[0015] Preferably, a second horizontal shaft is rotatably connected to the inner wall of the filter tank through a bearing. A second movable rod is fixedly connected to the middle of the second horizontal shaft. A knocking hammer is fixedly connected to the bottom end of the second movable rod. The knocking hammer contacts the inner wall of the filter tank. By knocking the inner wall of the filter tank with the knocking hammer, vibration is generated, and the impurities adhered between the inner wall of the filter tank and the grille are shaken off through the vibration. A plurality of convex blocks are fixedly connected to the bottom of the grille. The convex blocks contact the top of the second movable rod. When the second movable rod contacts the plurality of convex blocks, vibration with high frequency and low vibration intensity will be generated, so as to cooperate with the vibration generated by the knocking hammer, and the cleaning effect of the impurities on the grille is improved by vibrations with two different vibration frequencies.

[0016] The present invention adopts the above technical solutions and can bring the following beneficial effects:

[0017] 1. By setting up a cleaning mechanism, the invention uses a hydraulic cylinder to drive a vertical rod to drive a first movable rod and a push plate, and can automatically clean the leather fragments accumulated on the grille. During cleaning, the push plate can flip according to the movement of the vertical rod, shovel up the leather fragments adhered by oil stains on the grille and push them towards the sewage outlet, and cooperate with the sewage outlet and the garbage pool to realize the automatic collection and discharge of impurities, effectively avoiding the influence of excessive accumulation of impurities on the grille on the filtration effect, ensuring the normal operation of the first line of defense of the wastewater treatment system, and laying a good foundation for subsequent treatment processes.

[0018] 2. The invention cooperates with the cleaning mechanism and the sweeping mechanism. As the vertical rod moves up and down, it drives the first crossbar and the roller brush to clean the inner wall of the filter pool, removes impurities adhering to the inner wall of the filter pool in time, and prevents the accumulation of impurities from affecting the normal use of the filter pool and the wastewater treatment effect. When the roller brush rotates, the half-tooth gear cooperates with the transmission gear to drive the scraper to clean the impurities on the bristles of the roller brush. The spring makes the third slider rebound, ensuring that the scraper can continuously and effectively clean the roller brush, maintain the cleanliness and cleaning ability of the roller brush, and thus ensure the continuity and efficiency of the cleaning work on the inner wall of the filter pool.

[0019] 3. The invention uses the cooperation between the cleaning mechanism and the unblocking mechanism. The vertical rod drives the unblocking rod to move up and down, and inserts into the filter hole of the grille to push out the blocked impurities, which directly solves the problem of grid filter hole blockage and maintains the filtering performance of the grille. The elastic airbag sprays gas through the air pipe under the pressure of the grille, and uses the impact force and friction of the high-speed airflow to further clean the impurities in the filter hole, thereby enhancing the unblocking effect.

[0020] 4. The percussion hammer, driven by the vertical rod, strikes the inner wall of the filter tank to generate vibration. The second movable rod will generate high-frequency and low-intensity vibration when multiple protrusions come into contact, thereby cooperating with the vibration generated by the percussion hammer. The two vibrations with different frequencies improve the removal effect of impurities on the grille, and shake off the impurities adhering to the inner wall of the filter tank and the grille, thereby ensuring the smooth flow of the grille and the filter tank from many aspects and ensuring the stable operation of the wastewater treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the interior of the filter tank area in the present invention;

[0023] Figure 3 It is an exploded view of the internal components of the filter tank area in the present invention;

[0024] Figure 4 It is a schematic diagram of the push plate area structure in the present invention;

[0025] Figure 5 It is an exploded view of the first slider area in the present invention;

[0026] Figure 6 An exploded view of the roller brush area in the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified image of point A;

[0028] Figure 8 For the present invention Figure 3 The enlarged view of point B;

[0029] Figure 9 Schematic diagram of the bump area structure in the present invention.

[0030] In the figure: 1, filter tank; 2, water inlet pipe; 3, drain pipe; 4, grille; 5, cleaning mechanism; 501, vertical rod; 502, first movable rod; 503, push plate; 504, trapezoidal bump; 505, first chute; 506, first slider; 507, second chute; 508, second slider; 509, baffle; 5010, inclined plate; 5011, garbage pool; 5012, hydraulic cylinder; 6, cleaning mechanism; 601, first cross bar; 602, first horizontal axis; 603, drum brush; 604, third chute; 605, third slider; 606, scraping blade; 607, semi-toothed gear; 608, transmission tooth; 609, spring; 6010, roller; 7, dredging mechanism; 701, second cross bar; 702, dredging rod; 703, elastic airbag; 704, air pipe; 705, second horizontal axis; 706, second movable rod; 707, hammer; 708, bump. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-9 , an embodiment of the present invention is: a shoe factory wastewater treatment device, including a filter tank 1, a water inlet pipe 2 is fixedly connected to the top of the filter tank 1, and the wastewater discharged from the shoe factory is introduced into the filter tank 1 through the setting of the water inlet pipe 2. A grille 4 is fixedly connected to the inside of the filter tank 1, and the leather fragments in the wastewater are filtered through the grille 4. A drain pipe 3 is fixedly connected to the front of the filter tank 1, and the water filtered from the leather fragments is discharged from the filter tank 1 through the setting of the drain pipe 3. A cleaning mechanism 5 is arranged above the grille 4;

[0033] The cleaning mechanism 5 includes a vertical rod 501, two first movable rods 502, a trapezoidal bump 504, a first chute 505, a first slider 506, a second chute 507, a second slider 508, and a hydraulic cylinder 5012;

[0034] The top end of the vertical rod 501 slides through the grille 4 via a linear bearing and extends upward. The bottom end of the hydraulic cylinder 5012 is fixedly connected to the bottom inner wall of the filter tank 1, and the top end of the hydraulic cylinder 5012 is fixedly connected to the bottom end of the vertical rod 501. The opposite ends of the two first movable rods 502 are hinged to the middle of the vertical rod 501. A push plate 503 is hinged to the bottom end of the first movable rod 502. The push plate 503 is trapezoidal strip-shaped. The push plate 503 contacts the upper surface of the grille 4. A first chute 505 is formed in the back inner wall of the filter tank 1. Two first sliders 506 are slidably connected inside the first chute 505. A second chute 507 is formed in the front surface of the first slider 506. Two second sliders 508 are slidably connected inside the second chute 507. The push plate 503 is fixedly connected to the front surface of the second slider 508.

[0035] Sewage discharge openings are formed through the left and right inner walls of the filter tank 1. A baffle 509 is arranged outside the sewage discharge openings. An inclined plate 5010 is arranged at the bottom of the sewage discharge openings. Garbage pools 5011 are arranged on the left and right sides of the filter tank 1 and are respectively arranged below the two sewage discharge openings.

[0036] Working principle: When it is necessary to clean the grille 4, first stop adding water into the filter tank 1 through the water inlet pipe 2. Subsequently, start the hydraulic cylinder 5012 to drive the vertical rod 501 to move up and down. During the upward movement of the vertical rod 501, the two push plates 503 on both sides are pulled towards the middle of the grille 4 through the first movable rods 502. At this time, the second slider 508 moves to the side of the second chute 507 close to the middle of the grille 4 under the force of the push plate 503 moving towards the middle of the grille 4, and drives the trapezoidal strip-shaped push plate 503 to turn to the surface with the largest area to fit the upper surface of the grille 4. At this time, the leather fragments adhered to the upper surface of the grille 4 by oil stains are shoveled up by the bevel angle of the push plate 503. Subsequently, when the vertical rod 501 moves downward, the two push plates 503 are driven by the first movable rods 502 to push towards the sewage discharge openings. At this time, the second slider 508 moves to the sewage discharge opening side of the second chute 507 under the thrust of the push plate 503, and drives the trapezoidal strip-shaped push plate 503 to turn to the surface with the largest area towards the sewage discharge opening direction, and pushes the leather fragments just shoveled from the upper surface of the grille 4 towards the sewage discharge opening through the push plate 503, and opens the baffle 509 so that the leather fragments slide down from the inclined plate 5010 into the garbage pool 5011, thereby cleaning the leather fragments accumulated on the upper surface of the grille 4.

[0037] Please refer to Figures 1-9, on the basis of the above embodiments, in another embodiment of the present invention, a cleaning mechanism 6 is provided above the grille 4. The cleaning mechanism 6 includes four first cross bars 601. One end of the four first cross bars 601 opposite to each other is fixedly connected to the vertical rod 501 and is arranged above the push plate 503. The opposite ends of the four first cross bars 601 are rotatably penetrated through by a first horizontal shaft 602 through bearings. Both ends of the first horizontal shaft 602 are fixedly connected with a roller brush 603. The roller brush 603 contacts the inner wall of the filter tank 1. The other end of the roller brush 603 far from the first horizontal shaft 602 is fixedly connected with a roller 6010. The roller 6010 is slidably connected with the inner wall of the filter tank 1. By arranging the roller brush 603, the impurities adhered to the inner wall of the filter tank 1 are cleaned up.

[0038] A third chute 604 is penetrated through the middle of the first cross bar 601. A third slider 605 is slidably connected inside the third chute 604. One side of the third slider 605 is fixedly connected with a plurality of scraping blades 606 and contacts the roller brush 603. A semi-tooth gear 607 is fixedly connected to the roller brush 603. One side of the third slider 605 is fixedly connected with a transmission tooth 608. The transmission tooth 608 meshes with the semi-tooth gear 607. By arranging the scraping blades 606, the impurities adhered to the bristles of the roller brush 603 are scraped off.

[0039] A spring 609 is arranged inside the third chute 604. The top end of the spring 609 is fixedly connected with the third slider 605. The bottom end of the spring 609 is fixedly connected with the bottom inner wall of the third chute 604. By arranging the spring 609, the third slider 605 is driven to rebound.

[0040] Working principle: During the up and down movement of the vertical rod 501, the first cross bar 601 is driven to move up and down. The up and down movement of the first cross bar 601 drives the roller brush 603 to move up and down through the first horizontal shaft 602, and the impurities adhered to the inner wall of the filter tank 1 are cleaned during the movement. During the rotation of the roller brush 603, the semi-tooth gear 607 is driven to rotate. The first half of the rotation of the semi-tooth gear 607 meshes with the transmission tooth 608 and drives the third slider 605 and the scraping blades 606 to move. The impurities adhered to the bristles of the roller brush 603 are scraped off by the moving scraping blades 606, ensuring the cleanliness and cleaning effect of the roller brush 603.

[0041] Please refer to Figures 1-9 , on the basis of the above embodiments, in another embodiment of the present invention, a dredging mechanism 7 is provided below the grille 4. The dredging mechanism 7 includes a plurality of second cross bars 701. The plurality of second cross bars 701 are fixedly connected to each other through connecting rods. The top of the second cross bar 701 is fixedly connected with a dredging rod 702. The plurality of dredging rods 702 correspond to a plurality of filter holes on the grille 4 one by one. By inserting the dredging rods 702 into the filter holes, the blocked impurities in the filter holes are pushed out.

[0042] An elastic airbag 703 is sleeved outside the dredging rod 702. The upper surface of the elastic airbag 703 contacts the lower surface of the grille 4. An air pipe 704 is connected to the inner wall of the elastic airbag 703. The top end of the air pipe 704 penetrates through the dredging rod 702 and extends upward. The elastic airbag 703 is squeezed by the grille 4, and gas is ejected through the air pipe 704. The impurities blocked in the filter holes are ejected by the impact force and friction force generated by the high-speed air flow.

[0043] The inner wall of the filtration tank 1 is rotatably connected with a second horizontal shaft 705 through a bearing. A second movable rod 706 is fixedly connected to the middle of the second horizontal shaft 705. A knocking hammer 707 is fixedly connected to the bottom end of the second movable rod 706. The knocking hammer 707 contacts the inner wall of the filtration tank 1. Vibration is generated by the knocking hammer 707 knocking the inner wall of the filtration tank 1, and the impurities adhered to the inner wall of the filtration tank 1 and in the grille 4 are shaken off through the vibration. A plurality of convex blocks 708 are fixedly connected to the bottom of the grille 4. The convex blocks 708 contact the top of the second movable rod 706. The second movable rod 706 will generate vibrations with high frequency and low vibration intensity when contacting the plurality of convex blocks 708, so as to cooperate with the vibration generated by the knocking hammer 707, and improve the cleaning effect of the impurities on the grille 4 with vibrations of two different vibration frequencies.

[0044] Working principle: During the upward movement of the vertical rod 501, the second horizontal rod 701 is driven to move upward, and the dredging rod 702 is driven to move upward and insert into the filter holes on the grille 4, ejecting the impurities blocked in the filter holes. At the same time, the elastic airbag 703 is squeezed by the grille 4, and gas is ejected through the air pipe 704. The impurities blocked in the filter holes are ejected by the impact force and friction force generated by the high-speed air flow. When the vertical rod 501 drives the second horizontal rod 701 to move downward and contact the second movable rod 706, the second movable rod 706 and the knocking hammer 707 are driven to rotate. When the knocking hammer 707 impacts the inner wall of the filtration tank 1, vibration is generated, and the impurities adhered to the inner wall of the filtration tank 1 and in the grille 4 are shaken off through the vibration. The second movable rod 706 will generate vibrations with high frequency and low vibration intensity when contacting the plurality of convex blocks 708, so as to cooperate with the vibration generated by the knocking hammer 707, and improve the cleaning effect of the impurities on the grille 4 with vibrations of two different vibration frequencies.

[0045] The present invention provides a shoe factory wastewater treatment device. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by using the prior art.

Claims

1. A shoe factory wastewater treatment device, comprising a filter tank (1), characterized in that: The top of the filter pool (1) is fixedly connected to a water inlet pipe (2), the interior of the filter pool (1) is fixedly connected to a grille (4), the front of the filter pool (1) is fixedly connected to a drain pipe (3), and a cleaning mechanism (5) is provided above the grille 4; The cleaning mechanism (5) comprises a vertical rod (501), two first movable rods (502), a trapezoidal protrusion (504), a first slide groove (505), a first slide block (506), a second slide groove (507), a second slide block (508), and a hydraulic cylinder (5012); The top end of the vertical rod (501) slides through the grille (4) through a linear bearing and extends upward. The bottom end of the hydraulic cylinder (5012) is fixedly connected to the bottom inner wall of the filter tank (1). The top end of the hydraulic cylinder (5012) is fixedly connected to the bottom end of the vertical rod (501). The opposite ends of the two first movable rods (502) are hinged to the middle of the vertical rod (501). The bottom end of the first movable rod (502) is hinged with a push plate (503), and the push plate (503) is a trapezoidal bar. The push plate (503) is in contact with the upper surface of the grille (4); a first slide groove (505) is provided on the inner wall of the back side of the filter tank (1); two first sliders (506) are slidably connected inside the first slide groove (505); a second slide groove (507) is provided on the front side of the first slider (506); two second sliders (508) are slidably connected inside the second slide groove (507); and the push plate (503) is fixedly connected to the front side of the second slider (508).

2. A shoe factory wastewater treatment device according to claim 1, characterized in that: The inner walls on the left and right sides of the filter pool (1) are provided with sewage outlets, a baffle (509) is arranged outside the sewage outlet, and an inclined plate (5010) is arranged at the bottom of the sewage outlet. Garbage pools (5011) are arranged on the left and right sides of the filter pool (1) and are respectively arranged below the two sewage outlets.

3. A shoe factory wastewater treatment device according to claim 2, characterized in that: A cleaning mechanism (6) is arranged above the grille (4), and the cleaning mechanism (6) comprises four first cross bars (601), the opposite ends of the four first cross bars (601) are fixedly connected to the vertical bars (501) and arranged above the push plate (503), the opposite ends of the four first cross bars (601) are rotatably penetrated by a first cross shaft (602) through a bearing, and roller brushes (603) are fixedly connected at both ends of the first cross shaft (602), and the roller brushes (603) are in contact with the inner wall of the filter tank (1), and the other end of the roller brush (603) away from the first cross shaft (602) is fixedly connected to a roller (6010), and the roller (6010) is slidably connected to the inner wall of the filter tank (1).

4. A shoe factory wastewater treatment device according to claim 3, characterized in that: A third slide groove (604) is provided through the middle of the first cross bar (601), a third slider (605) is slidably connected inside the third slide groove (604), a plurality of scrapers (606) are fixedly connected to one side of the third slider (605) and are in contact with the roller brush (603), a half-tooth gear (607) is fixedly connected to the roller brush (603), a transmission gear (608) is fixedly connected to one side of the third slider (605), and the transmission gear (608) is meshed with the half-tooth gear (607).

5. A shoe factory wastewater treatment device according to claim 4, characterized in that: A spring (609) is arranged inside the third slide groove (604), the top end of the spring (609) is fixedly connected to the third sliding block (605), and the bottom end of the spring (609) is fixedly connected to the bottom inner wall of the third slide groove (604).

6. A shoe factory wastewater treatment device according to claim 5, characterized in that: A dredging mechanism (7) is provided below the grille (4), and the dredging mechanism (7) comprises a plurality of second cross bars (701), the plurality of second cross bars (701) are fixedly connected by connecting rods, and a dredging rod (702) is fixedly connected to the top of the second cross bar (701).

7. A shoe factory wastewater treatment device according to claim 6, characterized in that: The outer part of the dredging rod (702) is provided with an elastic airbag (703), the upper surface of the elastic airbag (703) is in contact with the lower surface of the grille (4), the inner wall of the elastic airbag (703) is connected with an air pipe (704), the top end of the air pipe (704) passes through the dredging rod (702) and extends upward.

8. A shoe factory wastewater treatment device according to claim 7, characterized in that: The inner wall of the filter tank (1) is rotatably connected to a second transverse axis (705) via a bearing, a second movable rod (706) is fixedly connected to the middle of the second transverse axis (705), a knocking hammer (707) is fixedly connected to the bottom end of the second movable rod (706), and the knocking hammer (707) is in contact with the inner wall of the filter tank (1), and a plurality of protrusions (708) are fixedly connected to the bottom of the grille (4), and the protrusions (708) are in contact with the top of the second movable rod (706).

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