A device for processing elaeagnus waste water

Abstract

The application relates to the technical field of wastewater treatment, and particularly discloses a spina date wastewater treatment device, which comprises an air flotation machine body, a solid-liquid separation module is arranged on the air flotation machine body, the solid-liquid separation module comprises a supporting unit, a filtering unit, an isolation unit and a cleaning unit, the supporting unit comprises a base fixedly arranged on the air flotation machine body, a supporting column fixedly arranged on the base and vertically arranged along the axial direction of the base, an extension rod connected to the base in the circumferential direction through a spring and a rotating wheel rotating on the extension rod, the filtering unit comprises a fixed cylinder axially sliding on the supporting column, a driving groove annularly arranged on the inner wall of the fixed cylinder and a driving column arranged on the supporting column and located in the driving groove. The beneficial effects of the application are as follows: when impurities are accumulated too much, the filter screen will be lowered, and the filter screen will rotate at the same time, the impurities are continuously pushed to the rotating direction, the cycle is repeated, finally, the impurities on the filter screen are scraped off by the scraping plate, so that the manpower is saved, the power mechanism is not needed to continuously clean, and the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a wild jujube wastewater treatment device. BACKGROUND

[0002] In the processing of wild jujube, in order to remove impurities and pesticide residues on the surface of wild jujube, it is usually necessary to soak and clean the wild jujube in clean water. This step will produce a large amount of cleaning wastewater, which may contain pollutants such as wild jujube peel, pulp fragments, silt and pesticide residues.

[0003] A wild jujube cleaning water wastewater treatment process is disclosed in Chinese Patent No. CN116495947B. The wild jujube cleaning water wastewater treatment process includes the following operation steps: the wild jujube cleaning water is first filtered through two-stage grating, enters the primary sedimentation tank for sedimentation, is filtered, enters the conditioning tank, is lifted to the air flotation system by the lifting pump, the supernatant flows to the intermediate tank, is heated, is lifted to the UASB anaerobic tank by the lifting pump, enters the A / O biochemical system, is further sedimented by the secondary sedimentation tank and the tertiary sedimentation tank, is filtered, and the filtrate and the filter residue D are generated, the filtrate is discharged, and is recycled.

[0004] Chinese Patent No. CN117964166B discloses a solid-liquid separation device, which comprises a stirring tank, characterized in that one side of the upper end of the stirring tank is provided with a water inlet, the upper end of the stirring tank is provided with an impurity conveyor, the upper end of the stirring tank is provided with a stirring motor, the stirring motor is connected downwardly with a stirring shaft, one side of the stirring tank is provided with a solid-liquid separation tank, a water outlet is formed in the lower side wall of the stirring tank, a plurality of microporous filters are arranged on the side wall of the solid-liquid separation tank, a water collecting tank is connected to the lower end of the solid-liquid separation tank, a drain pipe is connected to the lower part of the water collecting tank, and an extrusion cover is arranged outwardly on the lower part of the solid-liquid separation tank; a conveying groove is arranged at the bottom of the solid-liquid separation tank, an extrusion separation cylinder in communication with the conveying groove is arranged in the extrusion cover, a spiral extrusion rod is rotatably connected in the conveying groove and the extrusion separation cylinder, and an extrusion motor for driving the spiral extrusion rod to rotate is mounted at the free end of the extrusion cover.

[0005] The wastewater generated by the existing wild jujube cleaning machine is generally first subjected to solid-liquid separation and then treated by an air flotation machine. However, during the solid-liquid separation of the wastewater, the wild jujube peel and pulp fragments in the wastewater are prone to accumulate on the filter screen, thereby blocking the filter screen. Workers need to continuously clean the filter screen, which increases the workload of the workers. SUMMARY

[0006] The acid jujube wastewater treatment device aims to solve the technical problem that the existing acid jujube cleaning machine produces wastewater which is generally treated by first being subjected to solid-liquid separation and then being treated by a flotation machine, but when the wastewater is subjected to solid-liquid separation, the acid jujube peel and fruit pulp fragments in the wastewater are prone to accumulating on the filter screen, thereby clogging the filter screen, and workers need to continuously clean the filter screen, thereby increasing the workload of the workers.

[0007] The acid jujube wastewater treatment device comprises a flotation machine body, a solid-liquid separation module is arranged on the flotation machine body, the solid-liquid separation module comprises a support unit, a filter unit, an isolation unit and a cleaning unit, the support unit comprises a base fixedly arranged on the flotation machine body, a support column fixedly arranged on the base and vertically arranged along the axial direction of the base, an extension rod connected to the base in the circumferential direction through a spring, and a rotating wheel rotatably arranged on the extension rod, the filter unit comprises a fixed cylinder axially sliding on the support column, a driving groove annularly arranged on the inner wall of the fixed cylinder, a driving column arranged on the support column and located in the driving groove, a filter screen arranged on the fixed cylinder, and a plurality of arc-shaped closing plates vertically slidingly fitted on the outer wall of the filter screen, the driving groove has a plurality of first-adjacent inclined sections and vertical sections, and a rotating plate is rotatably arranged at the lower end of the vertical section; the adjacent closing plates are vertically slidingly fitted, the closing plates are rotatably fitted with the rotating wheel, and the upper surface of the closing plate has a lower plane, an upper plane and a connecting section, the height of the upper plane is higher than that of the lower plane, the isolation unit comprises two baffles vertically slidingly connected to the support column through springs, and the two baffles are arranged in the circumferential direction of the support column, and the baffles abut against the filter screen to form a cavity for adding wastewater on the inner side of the two baffles; the cleaning unit comprises an arc-shaped scraping plate vertically sliding on the support column and rotatably connected with the fixed cylinder, and a top rod fixedly arranged on the scraping plate, the scraping plate abuts against the filter screen, and the top rod abuts against the upper surface of the closing plate.

[0008] The beneficial effects are as follows: when the impurities accumulate too much, the filtering speed of the filter screen will decrease, and the weight of the filter screen will increase, thereby forcing the filter screen to descend, when the fixed cylinder descends along the support column, the fixed cylinder drives the filter screen to rotate, and the impurities are gradually accumulated at the bottom of the baffle in the rotating direction. When the filter screen descends to the limit position, the baffles on both sides gradually start to separate from the filter screen, thereby forming an opening between the baffles and the filter screen which gradually increases. Therefore, the waste liquid in the liquid inlet cavity will gradually flow out to the outside through the opening, and the impurities accumulated at the bottom of the baffle in the rotating direction will be gradually washed out to the outside. When the filter screen descends to the limit position, the opening between the baffles and the filter screen reaches the maximum state, at this time, the amount of liquid discharged from the liquid inlet cavity is greater than the amount of liquid added by the liquid inlet pipe, so the amount of liquid in the liquid inlet cavity gradually decreases, and the extension rod starts to push the filter screen to rise, thereby forming a cycle. Finally, the impurities on the filter screen are scraped off by the scraping plate, the filter screen is rotated according to the clogging condition of the filter screen, the impurities are continuously pushed to the rotating direction, and finally the impurities are cleaned away by the scraping plate, thereby saving manpower, continuously cleaning without the aid of a power mechanism, and reducing energy consumption.

[0009] Preferably, the base is a ring structure, and the support column is fixedly installed on the support column through a plurality of support rods arranged circumferentially.

[0010] Preferably, the two baffles are arranged perpendicularly to each other.

[0011] Preferably, the filter screen outer wall is provided with a protrusion, the inside of the closure plate is provided with a vertical sliding groove at a position corresponding to the protrusion, and the protrusion is located in the sliding groove.

[0012] Its effect is to ensure that the closure plate can vertically slide on the filter screen.

[0013] Preferably, the number of the closure plates is four.

[0014] Preferably, two scraping plates are arranged, and the two scraping plates and the two baffles are uniformly arranged along the circumferential direction of the support column.

[0015] Its effect is to further improve the cleaning effect of impurities.

[0016] Preferably, the rotating plate rotates in the driving groove through a torsional spring, the rotating plate is arranged obliquely, and the oblique surface of the rotating plate is flush with the inclined section.

[0017] Its effect is that after the driving column passes through the rotating plate and enters the bottom of the vertical section, the rotating plate can prevent the driving column from returning to the original route upward, forcing it to continue to enter the next inclined section.

[0018] Preferably, the support column is connected with a jet pipe through a spring sliding up and down, the jet pipe is arranged horizontally along the radial direction of the support column, the jet pipe nozzle is arranged upward, and the upper surface of the jet pipe abuts against the lower surface of the filter screen.

[0019] Its effect is that the upper surface of the jet pipe abuts against the lower surface of the filter screen, so that the jet pipe can blow out the impurities blocked in the filter screen in advance, so that the impurities can be scraped off when they reach the scraping plate.

[0020] By adopting the above technical solution, the beneficial effects of the present invention are as follows: wastewater falls into the liquid inlet chamber between the two baffles. When too much impurities accumulate, the filtration speed of the filter screen will decrease, the weight of the filter screen will increase, and the filter screen will be forced to descend. When the fixed cylinder descends along the support column, the fixed cylinder drives the filter screen to rotate, and the impurities will gradually accumulate at the bottom of the baffle in the direction of rotation. When the filter screen descends and approaches the limit position, the baffles on both sides gradually begin to separate from the filter screen, thereby forming a gradually increasing opening between the baffle and the filter screen. As a result, the waste liquid in the liquid inlet chamber will gradually flow out through the opening to the outside, and the impurities accumulated at the bottom of the baffle in the direction of rotation will be gradually flushed out to the outside. When the filter screen descends to the limit position, the opening between the baffle and the filter screen reaches its maximum state. At this time, the amount of liquid discharged from the liquid inlet chamber is greater than the amount of liquid added by the liquid inlet pipe, so the amount of liquid in the liquid inlet chamber gradually decreases, and the telescopic rod begins to push the filter screen up, and this cycle continues. Finally, the scraper plate scrapes off the impurities on the filter screen, and can make the filter screen rotate according to the blockage situation on the filter screen, while continuously pushing the impurities in the direction of rotation. Finally, after reaching the scraper plate, the impurities are cleaned out, which not only saves manpower, but also does not require the help of a power mechanism for continuous cleaning, and also reduces energy consumption. 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 structural schematic diagram of the solid-liquid separation module of the present invention.

[0023] Figure 3 It is an exploded schematic diagram of the base and filter screen of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the closing plate of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the support column of the present invention.

[0026] Figure 6 It is a cross-sectional view of the fixing cylinder of the present invention.

[0027] Reference numerals:

[0028] 10. Flotation machine body; 11. Flocculation tank; 12. Flotation tank; 13. Liquid inlet pipe; 20. Base; 21. Support column; 22. Telescopic rod; 23. Rotor; 30. Fixed cylinder; 31. Filter screen; 32. Drive trough; 33. Rotating plate; 34. Closing plate; 35. Lower plane; 36. Upper plane; 37. Connecting section; 38. Drive column; 40. Fixed frame; 41. Sliding rod; 42. Baffle; 50. Scraper plate; 51. Mandrel; 60. Jet pipe. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0030] As shown in the drawings, Figures 1 to 6 a specific embodiment of the invention of the jujube wastewater treatment device, including air floatation machine body 10 and solid-liquid separation module.

[0031] Air floatation machine body 10 includes liquid inlet pipe 13, flocculation tank 11 and air floatation tank 12, liquid inlet pipe 13 can send jujube wastewater into solid-liquid separation module first, filter out jujube peel, fruit pulp and other large particle impurities in waste liquid, the wastewater after preliminary filtration enters flocculation tank 11 for flocculation treatment, and then the flocculated wastewater enters air floatation tank 12 for treatment. It is particularly emphasized that the flocculation treatment and air floatation treatment in air floatation machine body 10 both belong to the prior art, which will not be described here.

[0032] The solid-liquid separation module includes a support unit, a filter unit, an isolation unit and a cleaning unit.

[0033] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , the support unit includes a base 20, a support column 21, an extension rod 22 and a runner 23.

[0034] The base 20 is fixedly installed on the air floatation machine body 10 and located above the flocculation tank 11. The base 20 is annular structure, and the support column 21 is fixedly installed in the middle of the base 20 through the support rod. The support column 21 is vertically arranged along the axial direction of the base 20.

[0035] A plurality of extension rods 22 are arranged on the upper surface of the base 20 along the circumferential direction. The extension rods 22 are vertically arranged. The extension rods 22 are sleeved with springs on the outside. One end of the spring is connected with the extension rod 22, and the other end is connected with the base 20. The upper end of the extension rod 22 is rotatably installed with the runner 23.

[0036] The filter unit includes a fixed cylinder 30, a filter screen 31, a driving groove 32, a sealing plate 34 and a driving column 38.

[0037] As shown in the drawings, Figures 3 to 6 , the fixed cylinder 30 is slidingly fitted on the outside of the support column 21 and coaxially arranged with the support column 21, so that the fixed cylinder 30 can slide up and down along the axial direction of the support column 21. The filter screen 31 is fixedly installed on the fixed cylinder 30.

[0038] The inner side wall of the fixed cylinder 30 is annularly provided with the driving groove 32. The driving groove 32 has an inclined section and a vertical section. The vertical section connects the head and tail of the adjacent two inclined sections.

[0039] The vertical section is provided with a rotating plate 33 near the lower end by torsion spring, the rotating plate 33 is arranged obliquely and is flush with the inclined surface of the inclined section, so that the lower end of the vertical section can be blocked.

[0040] The outer wall of the support column 21 is provided with a driving column 38, and the end of the driving column 38 is located in the driving groove 32. When the fixed cylinder 30 descends along the support column 21, the driving column 38 ascends along the inclined section of the driving groove 32, so as to force the fixed cylinder 30 to rotate the filter screen 31. In the embodiment, the rotating direction of the filter screen 31 is set as clockwise, until the driving column 38 reaches the top end of the inclined section. When the fixed cylinder 30 ascends along the support column 21, the driving column 38 descends along the vertical section of the driving groove 32. When the driving column 38 reaches the position near the bottom of the vertical section, the rotating plate 33 is first pushed, and then enters the bottom of the vertical section after passing through the rotating plate 33. The rotating plate 33 can prevent the driving column 38 from returning upwardly along the original path, so as to force it to continue to enter the next inclined section, and the cycle is repeated.

[0041] As Figure 4 , the outer wall of the filter screen 31 is vertically slidably provided with a plurality of arc-shaped closing plates 34. The outer wall of the filter screen 31 is provided with a protrusion, and the inner side of the closing plate 34 is vertically provided with a sliding groove at a corresponding position. The protrusion is located in the sliding groove. In the embodiment, the closing plate 34 is provided with four, and the four closing plates 34 are connected end to end to form a circular ring covering the outer side of the filter screen 31.

[0042] The adjacent two closing plates 34 are vertically slidably connected, and the two closing plates 34 are also slidably connected by the protrusion and the sliding groove.

[0043] The upper surfaces of the closing plates 34 are not consistent in height at both ends, and the two planes are connected and transitioned by an arc surface, so that the upper surface of the closing plate 34 has a lower plane 35, an upper plane 36 and a connecting section 37. It is particularly pointed out that the closing plate 34 located on one side of the rotating direction of the filter screen 31 is the lower plane 35.

[0044] In the initial state, the rotating wheel 23 on the telescopic rod 22 abuts and rotates with the bottom of the closing plate 34, which can lift the four closing plates 34. The bottoms of the four closing plates 34 are flush, and the inner side forms a cavity for filtering wastewater.

[0045] The isolation unit includes a fixed frame 40, a sliding rod 41 and a baffle 42.

[0046] As Figure 2 , Figure 3 , and Figure 5Two fixed racks 40 are fixedly installed on the outer sidewall of the support column 21 and are circumferentially spaced apart along the support column 21. A sliding rod 41 is vertically and slidingly connected to each fixed rack 40 by a spring, and a baffle plate 42 is fixedly connected to the lower end of the sliding rod 41. The baffle plate 42 is arranged along the radial direction of the support column 21, and the bottom of the baffle plate 42 abuts against the filter screen 31. One end of the baffle plate 42 abuts against the outer sidewall of the fixed cylinder 30, and the other end abuts against the inner sidewall of the closing plate 34.

[0047] It is particularly emphasized that the two baffle plates 42 are arranged perpendicular to each other in the embodiment, that is, the included angle between the two baffle plates is 90 degrees. The chamber between the two baffle plates is a liquid inlet chamber, and the liquid inlet pipe 13 is directly opposite the two baffle plates 42. Waste water can fall between the two baffle plates 42 and then fall after passing through the filter screen 31.

[0048] The cleaning unit includes a scraping plate 50, a top rod 51, and a jet pipe 60.

[0049] The scraping plate 50 is arranged in two and is rotationally fitted to the outer sidewall of the fixed cylinder 30, and the two scraping plates 50 are vertically and slidingly fitted to the sidewall of the support column 21 at the same time. The scraping part of the scraping plate 50 is in an arc structure, and the bottom abuts against the upper surface of the filter screen 31.

[0050] It is particularly emphasized that the two scraping plates 50 and the two baffle plates 42 are evenly arranged along the circumference of the fixed cylinder 30 in the embodiment, that is, the included angle between the four components is 90 degrees.

[0051] The top rod 51 is arranged on the two scraping plates 50, and the end of the top rod 51 away from the scraping plate 50 is located on the upper surface of the closing plate 34. As the filter screen 31 drives the closing plate 34 to rotate, the top rod 51 gradually passes through the lower plane 35, the connecting section 37, and the upper plane 36 of the closing plate 34. Since the height of the top rod 51 is constant, when the top rod 51 is located between the connecting section 37 and the upper plane 36, the closing plate 34 is forced to descend until the top rod 51 is located on the upper plane 36. At this time, the lower plane 35 of the closing plate 34 is flush with the surface of the filter screen 31, and the flush position corresponds to the scraping plate 50 (as shown in Figure 4 ). Thus, the scraping plate 50 can scrape the impurities on the filter screen 31 to the outside.

[0052] The jet pipe 60 is slidingly connected to the support column 21 by a spring and is horizontally arranged along the radial direction of the support column 21. The support column 21 is internally provided with a gas supply pipeline in communication with the jet pipe 60, and the jet hole of the jet pipe 60 is vertically upward.

[0053] The upper surface of the air jet pipe 60 is in abutment with the lower surface of the filter screen 31, so that when the filter screen 31 is lowered, the air jet pipe 60 can be pushed down synchronously. Thus, the air jet pipe 60 can blow out the impurities clogging the filter screen 31 in advance, so that the impurities can be scraped off when reaching the scraper plate 50.

[0054] In operation, the water outlet of the liquid inlet pipe 13 is directed between the two baffles 42, and the waste water falls into the liquid inlet cavity between the two baffles 42, and after being filtered by the filter screen 31, the waste water falls into the flocculation tank 11 for flocculation treatment. The large-particle impurities such as jujube peel and pulp fragments in the waste liquid will be left on the filter screen 31. When the impurities accumulate too much, the filtering speed of the filter screen 31 will decrease, so that the waste liquid will accumulate between the two baffles 42. The weight of the filter screen 31 will increase, so as to drive the fixed cylinder 30 and the closing plate 34 to descend synchronously. When the fixed cylinder 30 descends along the support column 21, the driving column 38 starts to rise from the bottom along the inclined section of the driving groove 32, so as to force the fixed cylinder 30 to rotate the filter screen 31. The filter screen 31 rotates clockwise, and the baffles 42 in the clockwise direction are in abutment with the filter screen 31. Therefore, when the filter screen 31 rotates, the impurities will be gradually accumulated at the bottom of the baffles 42 in the clockwise direction. The closing plate 34 rotates and descends at the same time, and the telescopic rod 22 at the bottom of the closing plate 34 will be gradually compressed by the spring. The rotating wheel 23 can ensure the rotation of the closing plate 34.

[0055] When the filter screen 31 descends to the limit position, that is, when the driving column 38 reaches the top of the inclined section of the driving groove 32, the stroke of the spring on the baffle 42 reaches the limit. With the gradual descent of the filter screen 31, the baffles 42 on both sides gradually start to separate from the filter screen 31, so that an opening gradually increases between the baffles 42 and the filter screen 31. Thus, the waste liquid in the liquid inlet cavity will gradually flow out to the outside through the opening, and the impurities accumulated at the bottom of the baffles 42 in the clockwise direction will be gradually washed out to the outside.

[0056] Especially emphasized is that the opening between the baffle 42 and the filter screen 31 gradually increases slowly, although the water in the liquid inlet cavity is discharged to the outside, the liquid inlet pipe 13 continuously adds waste liquid to the liquid inlet cavity, so the amount of liquid inlet is greater than the amount of discharge, so the liquid in the liquid inlet cavity is still in the increasing state, so the filter screen 31 will continue to slowly descend, until the driving column 38 reaches the top of the inclined section of the driving groove 32, the filter screen 31 descends to the limit position, the opening between the baffle 42 and the filter screen 31 reaches the maximum state, at this time the amount of liquid discharged in the liquid inlet cavity is greater than the amount of liquid added by the liquid inlet pipe 13, so the amount of liquid in the liquid inlet cavity gradually decreases, the telescopic rod 22 and the spring thereon begin to push the filter screen 31 and the fixed cylinder 30 upward along the support column 21, at this time the driving column 38 descends along the vertical section of the driving groove 32, when the driving column 38 reaches the position near the bottom of the vertical section, it will first push the rotating plate 33, and after passing through the rotating plate 33, it enters the bottom of the vertical section, the rotating plate 33 can prevent the driving column 38 from returning upward along the original path, forcing it to continue to enter the next inclined section, and so on.

[0057] As the filter screen 31 continuously rotates clockwise, the impurities on the filter screen 31 will be continuously transmitted in the clockwise direction until reaching the scraping plate 50. The scraping plate 50 is rotationally matched with the fixed cylinder 30 and simultaneously vertically slidingly matched with the side wall of the support column 21, so that the filter screen 31 will drive the scraping plate 50 to simultaneously ascend and descend when the filter screen 31 ascends and descends, and the scraping plate 50 will not rotate, and the bottom of the scraping plate 50 always abuts against the upper surface of the filter screen 31.

[0058] As the filter screen 31 drives the closing plate 34 to descend and rotate, the top rod 51 gradually passes through the lower plane 35, the connecting section 37 and the upper plane 36 of the closing plate 34, when the top rod 51 is located at the connecting section 37 and the upper plane 36, it will force the closing plate 34 to descend, until the top rod 51 is located at the upper plane 36, the closing plate 34 descends to the lowest position, at this time the lower plane 35 of the closing plate 34 is flush with the surface of the filter screen 31, and the flush position just corresponds to the scraping plate 50, so that when the impurities on the filter screen 31 reach the scraping plate 50, the static scraping plate 50 and the rotating filter screen 31 will relatively move, so that the scraping plate 50 can continuously discharge the impurities to the outside. The air floatation machine body 10 is specially provided with a platform for collecting impurities. The upper surface of the air jet pipe 60 abuts against the lower surface of the filter screen 31, so that the air jet pipe 60 can blow out the impurities blocked in the filter screen 31 in advance, so that the impurities can be scraped out when reaching the scraping plate 50.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A sour jujube wastewater treatment device, comprising: The air flotation machine body is characterized in that a solid-liquid separation module is provided on the air flotation machine body, and the solid-liquid separation module includes a support unit, a filtering unit, an isolation unit and a cleaning unit; The support unit includes a base fixed to the air flotation machine body, a support column fixed to the base and vertically arranged along the axial direction thereof, a telescopic rod circumferentially connected to the base through a spring, and a rotating wheel rotating on the telescopic rod; The filter unit includes a fixed cylinder that slides axially on the support column, a driving groove annularly arranged on the inner wall of the fixed cylinder, a driving column arranged on the support column and located in the driving groove, a filter screen arranged on the fixed cylinder, and a plurality of arc-shaped closing plates that vertically slide and fit on the outer wall of the filter screen, the driving groove having a plurality of inclined sections and vertical sections connected in the first position, and a rotating plate rotatably mounted near the lower end of the vertical section; adjacent closing plates vertically slide and fit, the bottom of the closing plate rotates and fits with the runner, the upper surface of the closing plate has a lower plane, an upper plane and a connecting section, and the upper plane is higher than the lower plane; The isolation unit includes two baffles connected to the support column by springs for vertical sliding. The two baffles are arranged along the circumference of the support column and abut against the filter screen, so that the inner sides of the two baffles form a chamber for adding wastewater. As the filter screen gradually descends, the baffles on both sides gradually begin to separate from the filter screen, forming a gradually increasing opening between the baffles and the filter screen. The cleaning unit includes an arc-shaped scraper plate that slides vertically on the support column and is rotatably connected to the fixed cylinder, and a push rod fixed to the scraper plate. The scraper plate abuts against the filter screen, and the push rod abuts against the upper surface of the closing plate. When the push rod is located on the upper plane, the closing plate drops to the lowest position. At this time, the lower plane of the closing plate is flush with the surface of the filter screen, and the flush position just corresponds to the scraper plate. The support column is connected to an air jet pipe which slides up and down through a spring. The air jet pipe is arranged horizontally along the radial direction of the support column. The spray hole of the air jet pipe is arranged upward, and the upper surface of the air jet pipe abuts against the lower surface of the filter screen.

2. A sour jujube wastewater treatment device according to claim 1, characterized in that, The base is an annular structure, and the support column is fixedly mounted on the base through a plurality of support rods arranged circumferentially.

3. A sour jujube wastewater treatment device according to claim 1, characterized in that, The two baffles are arranged perpendicular to each other.

4. A sour jujube wastewater treatment device according to claim 1, characterized in that: A protrusion is provided on the outer side wall of the filter screen, and a vertical sliding groove is provided on the inner side surface of the closing plate at a position corresponding to the protrusion, and the protrusion is located in the sliding groove.

5. A sour jujube wastewater treatment device according to claim 1, characterized in that: The number of the closing plates is 4.

6. A sour jujube wastewater treatment device according to claim 5, characterized in that: There are two scraper plates, and the two scraper plates and the two baffles are evenly arranged along the circumference of the support column.

7. A sour jujube wastewater treatment device according to claim 1, characterized in that: The rotating plate is rotated in the driving groove by a torsion spring. The rotating plate is arranged tilted and flush with the inclined surface of the inclined section.

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