Acidic industrial wastewater biochemical treatment device

Abstract

The utility model discloses a biochemical treatment device for acidic industrial wastewater. The biochemical treatment device comprises a treatment bin body, a filtering mechanism, a vibrating mechanism, a stirring device, a backwashing mechanism, a filtering net cover and a detector, supporting legs are arranged at the bottom of the treatment bin body, a filtering bin and a stirring bin are arranged in the treatment bin body, the filtering mechanism and the vibrating mechanism are both installed in the filtering bin, the filtering mechanism is located at the top of the vibrating mechanism, the detector is installed at the top of the stirring bin, the stirring device is installed in the stirring bin, and the filtering net cover is installed at the bottom of the stirring bin. The backwashing mechanism is mounted at the bottom of the filter screen cover. According to the utility model, through the vibration mechanism and the backwashing mechanism, the filter holes in the filter plate and the filter screen cover are prevented from being blocked, and the waste water discharge efficiency is effectively prevented from being reduced due to the problem that the filter holes are blocked.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment technical field, especially relate to a biochemical treatment device for acid industrial wastewater. BACKGROUND

[0002] At present, non-ferrous metallurgical industry produces a large amount of acid wastewater in the production process, which needs to be neutralized before being discharged. However, the prior art has the problem that a large amount of floating and precipitated substances generated after neutralization easily block the filter holes, thereby affecting the discharge efficiency.

[0003] After searching: the prior art publication number: CN221460049U a kind of acid industrial wastewater treatment device, technical scheme includes: wastewater treatment device body, motor and cleaning plate, the inside of wastewater treatment device body is provided with neutralization cavity, threaded rod is fixedly connected in the inside of neutralization cavity, threaded rod other side penetrates neutralization cavity and is fixedly connected with motor, the inside of wastewater treatment device body is provided with receiving groove in the bottom of neutralization cavity, the inside of receiving groove is movably connected with stop block, the inside of wastewater treatment device body is provided with blow-off port in receiving groove side;The device does not design cleaning mechanism for filter holes in filter block, when wastewater in wastewater treatment device body is about to be discharged, residual wastewater will flush a large amount of floating and precipitated substances generated after wastewater neutralization into filter holes, causing filter holes to be blocked, reducing the efficiency of wastewater discharge;

[0004] Further search: the prior art publication number: CN220926423U a kind of acid industrial wastewater and alkaline industrial wastewater comprehensive treatment equipment, including box, rotating rod, stirring blade, filter screen cover, vertical scraper and horizontal scraper are arranged in the inside of box;The scraper in the device only cleans the surface of filter screen cover, cannot clean the filter holes of filter screen cover, when wastewater in wastewater treatment device body is about to be discharged, residual wastewater will flush a large amount of floating and precipitated substances generated after wastewater neutralization into filter holes, causing filter holes to be blocked, reducing the efficiency of wastewater discharge. SUMMARY

[0005] The utility model discloses a kind of biochemical treatment devices for acid industrial wastewater, by vibration mechanism and backwashing mechanism, avoid the filter holes in filter plate and filter screen cover to be blocked, effectively prevent the wastewater discharge efficiency decline caused by filter holes to be blocked problem.

[0006] To achieve the above object, the technical scheme adopted by the utility model is:

[0007] An acidic industrial wastewater biochemical treatment device, comprising a treatment bin body, a filtering mechanism, a vibrating mechanism, a stirring device, a backwashing mechanism, a filter screen cover and a detector; the treatment bin body is provided with support legs at the bottom for supporting the whole device; the treatment bin body is internally provided with a filtering bin and a stirring bin; the filtering mechanism and the vibrating mechanism are both installed in the filtering bin, with the filtering mechanism being located on top of the vibrating mechanism; the detector is installed on top of the stirring bin; the stirring device is installed in the stirring bin; the filter screen cover is installed at the bottom of the stirring bin; and the backwashing mechanism is installed at the bottom of the filter screen cover.

[0008] The filtering bin is provided with a water inlet at the top; the stirring bin is provided with a medicine inlet at the top; the stirring bin is provided with a water outlet and a sewage outlet I at the bottom; the stirring bin is provided with a water pump at one side; a water pipe is fixedly connected with the water pump; the filtering bin and the stirring bin are connected with each other through the water pipe and the water pump.

[0009] The filter screen cover is in the shape of a circular truncated cone and is located on top of the sewage outlet I.

[0010] The filtering mechanism comprises a filter plate, a motor I, an auger, a sealing plate I and a sealing plate II; the filtering bin is provided with a sliding groove I at one side, which is a through groove; the filtering bin and the stirring bin are provided with a sliding groove II at the interval; the filter plate is arranged in the sliding grooves I and II and is slidingly installed in the filtering bin; the filter plate is in the shape of a V; the filter plate is provided with filter holes at both sides and a sewage collecting groove at the middle; the sewage collecting groove is provided with a sewage outlet II at one end; the auger is rotatably installed in the sewage collecting groove; the auger is provided with the motor I at one side; the output shaft of the motor I is fixedly connected with the auger; the sealing plate I and the sealing plate II are located at one side of the sliding groove I; the sealing plate I is installed on top of the filter plate; the sealing plate II is installed at the bottom of the filter plate, which can effectively prevent the wastewater from flowing out through the sliding groove I when the filter plate slides up and down, thereby ensuring the sealing property of the filtering bin.

[0011] The vibrating mechanism comprises a motor II, a rotating shaft I, an eccentric wheel, a connecting rod I, a fixed base, an extension rod, a spring II, and a fixed block; the fixed base is fixedly installed at the bottom of the filtering bin, and a working bin is arranged in the fixed base; the top of the fixed base is provided with the fixed block, and a through hole is arranged in the fixed block; the through hole in the fixed block is communicated with the working bin; the top of the fixed block is provided with a sliding block, the sliding block is fixedly connected with the filtering plate, and damping spring shock absorbers are arranged on the two sides of the fixed block; the two ends of the damping spring shock absorbers are fixedly connected with the filtering plate and the fixed base; the extension rod is located in the through hole of the fixed block, and the extension rod is slidably connected with the fixed block and the fixed base; the top of the extension rod is provided with a connecting rod II, one end of the connecting rod II is located in the sliding block and fixedly connected with the filtering plate, and the connecting rod II is slidably connected with the extension rod; a spring bin is arranged in the extension rod; the spring II is located in the spring bin, the spring II is sleeved on the connecting rod II, and a limiting block is arranged on one side of the spring II; the limiting block is fixedly connected with the connecting rod II; the connecting rod I is rotatably installed at the bottom of the extension rod, and the connecting rod I is located in the working bin; the eccentric wheel is provided with two groups, the two groups are fixedly connected through a pin shaft, the connecting rod I is rotatably connected with the pin shaft, and the two groups of eccentric wheels are both fixedly installed with the rotating shaft I on one side; the rotating shaft I is rotatably connected with the filtering bin and the fixed base; the motor II is fixedly installed on one side of the filtering bin, and the output end of the motor II is fixedly connected with the rotating shaft I.

[0012] The backwashing mechanism comprises a reciprocating screw rod, a motor IV, fixed plates, a sliding plate, a motor V, a sliding rod, an air pump, an air pipe I, a nozzle, and an air pipe II; the fixed plates are provided in two groups, one group is installed at the top of the drain, and the other group is installed at the middle part of the drain; the reciprocating screw rod is rotatably installed between the two groups of fixed plates, and the sliding rod is fixedly installed between the two groups of fixed plates; the motor IV is located at one end of the reciprocating screw rod, the motor IV is fixedly connected with the fixed plate located at the middle part of the drain through a waterproof shell, and the output shaft of the motor IV is fixedly connected with the reciprocating screw rod; the sliding plate is located between the two groups of fixed plates, the sliding plate is movably connected with the reciprocating screw rod through the spiral groove on the reciprocating screw rod, and the sliding plate is slidably connected with the sliding rod; the air pipe I is rotatably installed on the sliding plate, and a gear is arranged on the air pipe I; the motor V is fixedly installed on one side of the bottom of the sliding plate through a waterproof shell, the output shaft of the motor V is rotatably connected with the sliding plate, a gear is installed on the top of the output shaft of the motor V, and the gear on the air pipe I is engaged with the gear on the top of the output shaft of the motor V; the air pump is fixedly installed on the bottom of the sliding plate through a waterproof shell, the output end of the air pump is inserted into the air pipe I, and the air pipe I is slidably connected with the fixed plate at the top of the drain; the air pipe II is provided with a plurality of fixedly connected air pipes I, the installation angle of the air pipe II corresponds to the angle of the filter cover, a plurality of groups of nozzles are fixedly installed on the air pipe II, and the interval distance of the nozzles corresponds to the interval position of the filtering holes, so that the precise backwashing of the filtering holes is realized.

[0013] The sliding plate is hollow, and the gear on the air pipe I and the gear on the top of the output shaft of the motor V are both located in the sliding plate.

[0014] Preferably, the filter bin and the stirring bin are provided with manholes in the side walls, and the manholes facilitate the internal maintenance of the filter bin and the stirring bin.

[0015] The utility model has the advantages that compared with prior art, the utility model has the advantages that

[0016] 1) the vibration mechanism drives the eccentric wheel to rotate through motor II, generates high-frequency vibration, can effectively prevent the filter hole from being blocked by small impurities, ensures the continuous smoothness of the filtering system; secondly, the vibration promotes the suspended solids and large particles in the wastewater to separate from the wastewater into the sewage tank from the filter plate more quickly, thereby improving the filtering efficiency;

[0017] 2) motor IV drives the reciprocating screw rod to rotate, moves the sliding plate along the sliding rod reciprocatingly between the fixed plates, at the same time, motor V drives the gear on air pipe I to rotate, adjusts the spraying direction of the spray head, the air pump delivers high-pressure gas to air pipe II through air pipe I, and then the high-pressure gas is accurately sprayed to the filter holes of the filter cover by the spray head, so that the filter holes are subjected to strong backwashing; with the movement of the sliding plate, the spray head can cover the entire filter cover, ensures that each filter hole is effectively cleaned, thereby keeping the filter cover smooth and ensuring efficient drainage. BRIEF DESCRIPTION OF DRAWINGS

[0018] ATTACHED Figure 1 is a structure schematic view of the acid industrial wastewater biochemical treatment device of the utility model;

[0019] ATTACHED Figure 2 is a structure schematic view of the filter bin in the utility model; Figure 1

[0020] ATTACHED Figure 3 is a structure schematic view of the filter mechanism in the utility model; Figure 1

[0021] ATTACHED Figure 4 is a structure schematic view of the vibration mechanism in the utility model; Figure 1

[0022] ATTACHED Figure 5 is a structure schematic view of the backwashing mechanism in the utility model Figure 1 ; Figure 1

[0023] ATTACHED Figure 6 is a structure schematic view of the backwashing mechanism in the utility model Figure 1 ; Figure 2

[0024] ATTACHED Figure 7 is a structure schematic view of the appearance of the acid industrial wastewater biochemical treatment device of the utility model Figure 1 ;

[0025] ATTACHED Figure 8 is a structure schematic view of the appearance of the acid industrial wastewater biochemical treatment device of the utility model​​​​​Figure 2 ;

[0026] Fig. 1, processing warehouse body; 101, water inlet; 102, drain; 103, medicine inlet; 104, filter bin; 105, stirring bin; 106, support leg; 107, sewage outlet I; 108, sliding groove I; 109, sliding groove II; 2, filter mechanism; 21, filter plate; 22, sewage collecting tank; 23, sewage outlet II; 24, motor I; 25, auger; 26, sealing plate I; 27, sealing plate II; 3, vibration mechanism; 31, motor II; 32, rotating shaft I; 33, eccentric wheel; 34, connecting rod I; 35, fixed seat; 36, damping spring shock absorber; 37, telescopic rod; 38, spring II; 39, connecting rod II; 310, limit block; 311, working bin; 312, sliding block; 313, fixed block; 314, pin shaft; 4, stirring device; 5, backwashing mechanism; 51, reciprocating screw; 52, motor IV; 53, fixed plate; 54, sliding plate; 55, motor V; 56, sliding rod; 57, air pump; 58, air pipe I; 59, spray head; 510, air pipe II; 6, filter cover; 7, detector; 8, water pump; 9, water pipe. DETAILED DESCRIPTION

[0027] For the convenience of persons skilled in the art to understand, the following will be combined with the accompanying drawings Figures 1-8 The technical scheme of the utility model is further specifically explained.

[0028] An acidic industrial wastewater biochemical treatment device, comprising a processing warehouse body 1, a filter mechanism 2, a vibration mechanism 3, a stirring device 4, a backwashing mechanism 5, a filter cover 6 and a detector 7; the processing warehouse body 1 is provided with support legs 106 at the bottom for supporting the whole device; the processing warehouse body 1 is internally provided with a filter bin 104 and a stirring bin 105; the filter mechanism 2 and the vibration mechanism 3 are both installed in the filter bin 104, and the filter mechanism 2 is located at the top of the vibration mechanism 3; the detector 7 is installed at the top of the stirring bin 105; the stirring device 4 is installed in the stirring bin 105; the filter cover 6 is installed at the bottom of the stirring bin 105; and the backwashing mechanism 5 is installed at the bottom of the filter cover 6;

[0029] The filter bin 104 is provided with a water inlet 101 at the top; the stirring bin 105 is provided with a medicine inlet 103 at the top; the stirring bin 105 is provided with a drain 102 and a sewage outlet I 107 at the bottom; the stirring bin 105 is provided with a water pump 8 at one side; a water pipe 9 is fixedly connected with the water pump 8; and the filter bin 104 and the stirring bin 105 are communicated with each other through the water pipe 9 and the water pump 8;

[0030] The filter cover 6 is in the shape of a circular truncated cone and is located at the top of the sewage outlet I 107;

[0031] From the above description: waste water through the top of the filter bin 104 inlet 101 into, after the preliminary filtration of the filter mechanism 2, remove large particles impurities, vibration mechanism 3 vibration filter mechanism 2, prevent filter mechanism 2 blockage; filtered wastewater by water pump 8 pumping to the stirring bin 105, while adding alkaline medicament from the inlet 103, stirring device 4 starts to work, so that the wastewater and alkaline medicament fully mixed reaction, detector 7 monitoring the reaction process, the treated water from the drain 102, while the precipitate is discharged through the drain 107, backwash mechanism 5 to ensure that the filter screen cover 6 filter hole is not blocked.

[0032] The filter mechanism 2 includes filter plate 21, motor I 24, auger 25, sealing plate I 26, sealing plate II 27; the filter bin 104 side is provided with sliding groove I 108, sliding groove I 108 is a through groove; filter bin 104 and stirring bin 105 interval side is provided with sliding groove II 109; the filter plate 21 is located in the sliding groove I 108, sliding groove II 109, and is slidably installed in the filter bin 104; the filter plate 21 is "V" type, both sides of the filter plate 21 are provided with filter holes, and the middle part is provided with a sewage collection tank 22; one end of the sewage collection tank 22 is provided with a drain 2 23; the auger 25 is rotatably installed in the sewage collection tank 22, and the motor I 24 is installed on one side of the auger 25; the output shaft of the motor I 24 is fixedly connected with the auger 25; the sealing plate I 26 and the sealing plate II 27 are located on one side of the sliding groove I 108, the sealing plate I 26 is installed on the top of the filter plate 21, and the sealing plate II 27 is installed on the bottom of the filter plate 21, which can effectively prevent the filter plate 21 from flowing out through the sliding groove I 108 when sliding up and down, and ensure the sealing property of the filter bin 104.

[0033] From the above description: waste water through the inlet 101 flow, through the "V" type filter plate 21 filter, impurities are intercepted on the filter plate 21, the vibration mechanism 3 vibrates the filter plate 21 to make the filter plate 21 slide in the sliding groove I 108 and the sliding groove II 109, so that the large particles on the surface of the filter plate 21 enter the sewage collection tank 22, and the motor I 24 drives the auger 25 to rotate, pushing the dirt to the drain 2 23 to discharge.

[0034] The vibrating mechanism 3 comprises a motor II 31, a rotating shaft I 32, an eccentric wheel 33, a connecting rod I 34, a fixed base 35, an extension rod 37, a spring II 38, a fixed block 313; the fixed base 35 is fixedly installed at the bottom of the filtering bin 104, and a working bin 311 is arranged in the fixed base 35; the top of the fixed base 35 is provided with the fixed block 313, and a through hole is arranged in the fixed block 313 and communicates with the working bin 311; the top of the fixed block 313 is provided with a sliding block 312, and the sliding block 312 is fixedly connected with the filter plate 21; damping spring shock absorbers 36 are arranged on the two sides of the fixed block 313, and the two ends of the damping spring shock absorbers 36 are fixedly connected with the filter plate 21 and the fixed base 35; the extension rod 37 is located in the through hole of the fixed block 313 and is in sliding connection with the fixed block 313 and the fixed base 35; the top of the extension rod 37 is provided with a connecting rod II 39, one end of the connecting rod II 39 is located in the sliding block 312 and is fixedly connected with the filter plate 21, the connecting rod II 39 is in sliding connection with the extension rod 37, and the extension rod 37 is internally provided with a spring bin; the spring II 38 is located in the spring bin and is sleeved on the connecting rod II 39, and one side of the spring II 38 is provided with a limiting block 310 which is fixedly connected with the connecting rod II 39; the connecting rod I 34 is rotatably installed at the bottom of the extension rod 37 and is located in the working bin 311; the eccentric wheel 33 is provided with two groups which are fixedly connected through a pin shaft 314 and are in rotary connection with the connecting rod I 34; the two groups of eccentric wheels 33 are both fixedly installed with a rotating shaft I 32 on one side, and the rotating shaft I 32 is in rotary connection with the filtering bin 104 and the fixed base 35; the motor II 31 is fixedly installed on one side of the filtering bin 104, and the output end of the motor II 31 is fixedly connected with the rotating shaft I 32.

[0035] From the above description, it can be known that after the motor Ⅱ 31 is started, the output end of the motor Ⅱ 31 drives the rotating shaft Ⅰ 32 to rotate, and then drives the two sets of eccentric wheels 33 to rotate synchronously. Due to the design of the eccentric wheels 33, the eccentric wheels 33 will generate centrifugal force when rotating, and the force is transmitted to the telescopic rod 37 through the connecting rod Ⅰ 34, so that the telescopic rod 37 makes reciprocating motion in the fixed block 313. When the telescopic rod 37 moves outward under the action of the centrifugal force generated by the eccentric wheels 33, the spring Ⅱ 38 will be stretched. When the telescopic rod 37 moves inward due to the decrease or disappearance of the centrifugal force, the spring Ⅱ 38 will gradually restore to the original state and release the stored energy. The stretching and restoring process makes the spring Ⅱ 38 produce continuous vibration effect in the vibration mechanism 3. The vibration effect can enhance the vibration effect of the telescopic rod 37. The vibration of the telescopic rod 37 is transmitted to the sliding block 312 through the connecting rod Ⅱ 39, and then drives the filter plate 21 to make reciprocating sliding in the sliding groove Ⅰ 108 and the sliding groove Ⅱ 109. The vibration not only helps the wastewater to flow more uniformly through the filter plate 21, but also improves the filtering efficiency. In addition, the small particle impurities stuck in the filter holes can be shaken into the filter bin 104, and then enter the stirring bin 105 together with the filtered wastewater for subsequent treatment, so that the filter holes are effectively prevented from being blocked by impurities. At the same time, the damping spring shock absorber 36 provides additional buffering and stabilizing effect for the filter plate 21.

[0036] The backwashing mechanism 5 comprises a reciprocating screw rod 51, a motor IV 52, a fixed plate 53, a sliding plate 54, a motor V 55, a sliding rod 56, an air pump 57, an air pipe I 58, a spray head 59, and an air pipe II 510; the fixed plate 53 is provided in two groups, one group is installed at the top of the drain 102, and the other group is installed at the middle part of the drain 102; the reciprocating screw rod 51 is rotatably installed between the two groups of fixed plates 53, and the sliding rod 56 is fixedly installed between the two groups of fixed plates 53; the motor IV 52 is located at one end of the reciprocating screw rod 51, and the motor IV 52 is fixedly connected with the fixed plate 53 located at the middle part of the drain 102 through a waterproof shell, and the output shaft of the motor IV 52 is fixedly connected with the reciprocating screw rod 51; the sliding plate 54 is located between the two groups of fixed plates 53, and the sliding plate 54 is movably connected with the reciprocating screw rod 51 through the spiral groove on the reciprocating screw rod 51, and the sliding plate 54 is slidably connected with the sliding rod 56; the air pipe I 58 is rotatably installed on the sliding plate 54, and the air pipe I 58 is provided with a gear; the motor V 55 is fixedly installed on one side of the bottom of the sliding plate 54 through a waterproof shell, the output shaft of the motor V 55 is rotatably connected with the sliding plate 54, the top of the output shaft of the motor V 55 is provided with a gear, and the gear on the air pipe I 58 is engaged with the gear on the top of the output shaft of the motor V 55; the air pump 57 is fixedly installed on the bottom of the sliding plate 54 through a waterproof shell, the output end of the air pump 57 is inserted into the air pipe I 58, and the air pipe I 58 is slidably connected with the fixed plate 53 at the top of the drain 102; the air pipe II 510 is provided with a plurality of fixed connections with the air pipe I 58, the installation angle of the air pipe II 510 corresponds to the angle of the filter cover 6, a plurality of groups of spray heads 59 are fixedly installed on the air pipe II 510, and the interval distance of the spray heads 59 corresponds to the interval position of the filter holes, so that the accurate backwashing of the filter holes is realized.

[0037] The sliding plate 54 is hollow, and the gear on the air pipe I 58 and the gear on the top of the output shaft of the motor V 55 are both located in the sliding plate 54.

[0038] As can be seen from the above description: when the filter holes of the filter cover 6 are blocked, the sewage outlet I 107 is opened, the residual wastewater and a large amount of sediment are discharged through the sewage outlet I 107 under the stirring of the stirring device 4, the motor IV 52 is started to drive the reciprocating screw rod 51 to rotate, so that the sliding plate 54 reciprocally moves along the sliding rod 56 between the fixed plates 53, at the same time, the motor V 55 drives the gear on the air pipe I 58 to rotate to adjust the spraying direction of the spray head 59, the air pump 57 is started to deliver high-pressure gas to the air pipe II 510 through the air pipe I 58, and then the high-pressure gas is accurately sprayed to the filter holes of the filter cover 6 through the spray head 59, so that the strong backwashing of the filter holes is realized; with the movement of the sliding plate 54, the spray head 59 can cover the entire filter cover 6, so that each filter hole is effectively cleaned, so that the filter cover 6 is kept unblocked, the drain 102 is ensured to be efficiently discharged, and the sediment accumulated in the filter holes of the filter cover 6 is flushed out of the filter holes and discharged through the sewage outlet I 107 under the flushing of the backwashing mechanism 5.

[0039] Further, the filter bin 104 and the stirring bin 105 are provided with manholes on the side walls, and the manholes are convenient for the internal maintenance of the filter bin and the stirring bin.

[0040] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] As described above, including but not limited to motor, water pump, air pump, detector and other electronic or electrical components are prior art components, which are obtained by private customization or purchase, and the electrical connection between each component is the conventional circuit connection or electrical connection in the prior art, which is not the protection range of the utility model.

[0042] The above content is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the present claims, which shall belong to the protection scope of the utility model.

Claims

1. An acidic industrial wastewater biochemical treatment device, comprising a treatment bin body, a filtering mechanism, a vibration mechanism, a stirring device, a backwashing mechanism, a filter screen cover and a detector; the treatment bin body is provided with support legs at the bottom, and a filtering bin and a stirring bin are arranged inside the treatment bin body; the filtering mechanism and the vibration mechanism are both installed in the filtering bin, and the filtering mechanism is located on top of the vibration mechanism; the detector is installed on top of the stirring bin; the stirring device is installed in the stirring bin; the filter screen cover is installed at the bottom of the stirring bin; and the backwashing mechanism is installed at the bottom of the filter screen cover. characterized in that The vibration mechanism comprises a motor II, a rotating shaft I, an eccentric wheel, a connecting rod I, a fixed seat, an extension rod, a spring II and a fixed block; the fixed seat is fixedly installed at the bottom of the filtering bin, and a working bin is arranged in the fixed seat; the fixed block is installed on top of the fixed seat, and a through hole is arranged in the fixed block, which is in communication with the working bin; the fixed block is provided with a sliding block on top, which is fixedly connected with the filter plate; damping spring shock absorbers are arranged on both sides of the fixed block, and the ends of the damping spring shock absorbers are fixedly connected with the filter plate and the fixed seat; the extension rod is located in the through hole of the fixed block, and is slidingly connected with the fixed block and the fixed seat; the extension rod is provided with a connecting rod II on top, and one end of the connecting rod II is fixedly connected with the filter plate in the sliding block; the connecting rod II is slidingly connected with the extension rod; a spring bin is arranged in the extension rod; the spring II is located in the spring bin, and is sleeved on the connecting rod II; a limiting block is arranged on one side of the spring II, and is fixedly connected with the connecting rod II; the connecting rod I is rotatably installed at the bottom of the extension rod, and is located in the working bin; the eccentric wheel is provided with two groups, which are fixedly connected through a pin shaft, and are rotatably connected with the connecting rod I; the eccentric wheels are both fixedly installed with the rotating shaft I on one side, and are rotatably connected with the filtering bin and the fixed seat; and the motor II is fixedly installed on one side of the filtering bin, and is fixedly connected with the rotating shaft I at the output end. The back flushing mechanism comprises a reciprocating screw rod, a motor IV, fixed plates, a sliding plate, a motor V, a sliding rod, an air pump, an air pipe I, a spray head, and an air pipe II; the fixed plates are provided in two groups, one group is installed on the top of the drain, and the other group is installed at the middle part of the drain; the reciprocating screw rod is rotatably installed between the two groups of fixed plates, and the sliding rod is fixedly installed between the two groups of fixed plates; the motor IV is located at one end of the reciprocating screw rod, and the motor IV is fixedly connected with the fixed plate located at the middle part of the drain through a waterproof shell, and the output shaft of the motor IV is fixedly connected with the reciprocating screw rod; the sliding plate is located between the two groups of fixed plates, and the sliding plate is movably connected with the reciprocating screw rod through a spiral groove on the reciprocating screw rod, and the sliding plate is movably connected with the sliding rod; the air pipe I is rotatably installed on the sliding plate, and a gear is arranged on the air pipe I; the motor V is fixedly installed on the bottom of one side of the sliding plate through a waterproof shell, the output shaft of the motor V is rotatably connected with the sliding plate, a gear is arranged on the top of the output shaft of the motor V, and the gear on the air pipe I is engaged with the gear on the top of the output shaft of the motor V; the air pump is fixedly installed on the bottom of the sliding plate through a waterproof shell, the output end of the air pump is inserted into the air pipe I, and the air pipe I is movably connected with the fixed plate on the top of the drain; the air pipe II is movably connected with the air pipe I, and the air pipe II is fixedly installed with a plurality of groups of spray heads, and the interval distance of the spray heads corresponds to the interval position of the filter holes.

2. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The filter bin is provided with a water inlet on the top, the stirring bin is provided with a medicine inlet on the top, and the stirring bin is provided with a drain and a sewage outlet I on the bottom; a water pump is arranged on one side of the stirring bin, and a water pipe is fixedly connected with the water pump; the filter bin and the stirring bin are communicated with each other through the water pipe and the water pump.

3. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The filter screen cover is in the shape of a circular truncated cone and is located on the top of the sewage outlet I.

4. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The installation angle of the air pipe II corresponds to the angle of the filter screen cover.

5. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The filter mechanism comprises a filter plate, a motor I, an auger, a sealing plate I, and a sealing plate II; a sliding groove I is arranged on one side of the filter bin, and the sliding groove I is a through groove; a sliding groove II is arranged on the interval side between the filter bin and the stirring bin; the filter plate is arranged in the sliding groove I and the sliding groove II and is movably installed in the filter bin; the filter plate is in the shape of a "V", filter holes are arranged on both sides of the filter plate, and a sewage collecting groove is arranged in the middle part of the filter plate; the auger is rotatably installed in the sewage collecting groove, the motor I is installed on one side of the auger, and the output shaft of the motor I is fixedly connected with the auger; the sealing plate I and the sealing plate II are located on one side of the sliding groove I, the sealing plate I is installed on the top of the filter plate, and the sealing plate II is installed on the bottom of the filter plate.

6. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The sliding plate is hollow, and the gear on the air pipe I and the gear on the top of the output shaft of the motor V are both located in the sliding plate.

7. The acid industrial wastewater biochemical treatment device according to claim 1, characterized in that The side walls of the filter bin and the stirring bin are both provided with an inspection hole.

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