Wastewater circulating treatment device for producing calcium dobesilate

Abstract

The invention discloses a waste water circulation treatment device for producing calcium dobesilate, and relates to the technical field of sewage treatment.The waste water circulation treatment device comprises a rack and a synchronizing mechanism, a plurality of filter plates are arranged on the rack in a sliding mode, a hydraulic cylinder for extruding the filter plates is arranged on one side of the rack, the synchronizing mechanism comprises a plurality of air bags, and the air bags are arranged on the rack. The plurality of air bags are arranged along the sliding direction of the filter plates, the plurality of air bags are sequentially communicated with one another, the communicated part of every two adjacent air bags is connected with one filter plate, and the rack is also provided with an air pump for inflating and deflating the air bags. The sewage treatment system has the advantages that the sludge treatment steps can be simplified, so that the sludge treatment efficiency and the working efficiency of the sewage treatment system are greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to a wastewater recycling treatment device for the production of calcium dobesilate. Background Art

[0002] Calcium dobesilate is an important drug and functional compound, with various pharmacological effects such as improving microcirculation, antioxidation, and anti - inflammation. In one of the steps of producing calcium dobesilate, benzenesulfonic acid is neutralized with calcium hydroxide. In this process, calcium dobesilate and a large amount of wastewater are generated. This wastewater contains unreacted benzenesulfonic acid, calcium hydroxide, and by - products generated by the reaction. Therefore, this wastewater needs to be harmlessly treated before being discharged.

[0003] The main way to treat wastewater is to first filter out large particles in the wastewater through physical means, then precipitate and filter out fine particles in the wastewater through chemical precipitation, then decompose organic matter in the wastewater through biological decomposition, then separate the wastewater and sludge through precipitation, and finally dehydrate the sludge.

[0004] In the prior art, the treatment method for sludge is to extrude the sludge through a filter press. Usually, the filter press includes multiple filter plates, and each filter plate is provided with a filter membrane. When multiple filter plates are squeezed together by a hydraulic device, a filtering chamber is formed between the multiple filter plates. Then, the filter membrane is extruded by increasing pressure, so that the volume of the filtering chamber shrinks, and the fixed particles in the filtering chamber are compressed into filter cakes. The water in the fixed particles flows away from the grooves in the filter plates. Then, the hydraulic device is reset, and then the multiple filter plates are opened in sequence, and the filter cakes in the filtering chamber fall off from the filter membrane. In this process, it is necessary to separate the multiple filter plates one by one manually or by corresponding equipment. This step is relatively cumbersome, greatly reducing the efficiency of sludge treatment, and thus reducing the treatment efficiency of the sewage treatment system. Summary of the Invention

[0005] The purpose of this application is to provide a wastewater recycling treatment device for the production of calcium dobesilate, which can simplify the steps of sludge treatment, thereby greatly improving the sludge treatment efficiency and the working efficiency of the sewage treatment system.

[0006] A wastewater recycling treatment device for the production of calcium dobesilate provided by this application adopts the following technical solutions: A frame, on which multiple filter plates are slidably arranged, and a hydraulic cylinder for squeezing the multiple filter plates is arranged on one side of the frame; The synchronization mechanism includes a plurality of airbags, which are arranged along the sliding direction of the filter plate and are connected to each other in sequence. A filter plate is connected to the connection point between each two adjacent airbags. An air pump for inflating and deflating the airbags is also provided on the frame.

[0007] Optionally, the synchronization mechanism also includes two slide rails, which are installed on the frame and are relatively arranged on both sides of the sliding direction of multiple filter plates. A slide groove is opened in the slide rail, and slide rollers are arranged on both sides of each filter plate. All slide rollers are slidably set in the slide groove, and a connecting rod is connected to the end of each slide roller away from the filter plate. The connecting rod is arranged perpendicular to the axis of the slide roller. A toggle assembly is also provided on the frame, and the toggle assembly can simultaneously drive all connecting rods to swing back and forth around the connection between the filter plate and the airbag.

[0008] Optionally, the toggle assembly includes a gear, a chain, a rotating rod, a connecting frame and a rotating motor, two gears are provided and are rotatably mounted on the frame, the chain is meshed with the two gears at the same time, two rotating rods are also provided, the two rotating rods correspond one-to-one to the two gears, one end of the rotating rod is fixedly connected to one end of the gear, and the ends of the two rotating rods away from the gears are rotatably connected to the connecting frame at the same time, a plurality of shift blocks are provided at one end of the connecting frame close to the connecting rod, the plurality of shift blocks correspond one-to-one to the plurality of connecting rods, and the shift blocks slide against the connecting rod, and the rotating motor is installed on the frame and coaxially fixedly connected to one of the gears.

[0009] Optionally, each of the connecting rods has an air guide groove therein, the air guide groove is connected to an external air source, and each of the connecting rods has an outer wall provided with a plurality of air nozzles, the plurality of air nozzles are connected to the air guide groove, and the air nozzles face the end face of the filter plate.

[0010] Optionally, a semi-annular connecting block is provided at one end of the air nozzle close to the connecting rod, an air guide hole connected to the air nozzle is provided at the end of the connecting block away from the air nozzle, an annular groove coaxial with the connecting rod is provided in the peripheral wall of the connecting rod, a swinging groove for the air nozzle to pass through is provided on the outer peripheral wall of the connecting rod, the swinging groove is connected with the annular groove, and the air guide hole is connected with the air guide groove, the connecting block is located in the annular groove and can slide back and forth in the annular groove, and the air nozzle swings back and forth in the swinging groove.

[0011] Optionally, the gas supplied by the external gas source has a certain temperature.

[0012] Optionally, a transport component for carrying the filtered sludge is also provided at the bottom of the frame.

[0013] In summary, the present application includes at least one of the following beneficial technical effects: 1. When multiple filter plates need to be separated, the air pump is started to inflate multiple airbags. After the multiple airbags are expanded, they begin to stretch horizontally. Therefore, the airbags separate two adjacent filter plates during the stretching process. The multiple airbags are interconnected, and an airbag is arranged between each adjacent filter plate. Therefore, multiple filter plates can be opened and separated by the airbags at the same time, thereby realizing the synchronous separation of multiple filter plates, which greatly shortens the time required for separating the filter plates, thereby greatly improving the working efficiency of the device; 2. When the toggle assembly drives the connecting rod to swing back and forth around the connection between the filter plate and the airbag, since the connecting rod is fixedly connected to the filter plate through the sliding roller, the filter plate will also swing with the connecting rod, and the filter plate will be in an inclined state during the swinging process, and the inclined state can make it easier for the sludge on the end surface of the filter plate to fall off; at the same time, the filter plate will generate a certain centrifugal force during the swinging process, so the sludge attached to the end surface of the filter plate will be easier to fall off from the filter plate under the action of centrifugal force, thereby further avoiding the situation where the sludge adheres to the filter plate as much as possible; 3. Since the filter plate in this embodiment is connected to the airbag, and the airbag itself has a certain elasticity, when the toggle assembly drives the filter plate to swing to the right, the airbag on the right side of the filter plate will be squeezed, and the airbag on the left side of the filter plate will be stretched. Therefore, when the toggle block in the toggle assembly is separated from the connecting rod, the filter plate and the connecting rod will have a relatively large return acceleration (i.e., leftward acceleration) due to the elastic force of the airbag. Therefore, the speed of the filter plate changes relatively quickly, and the sludge on the right end face of the filter plate remains stationary due to inertia, so that the sludge on the right end face of the filter plate is easier to be thrown off; similarly, when the toggle assembly drives the filter plate to swing to the left, the sludge on the left end face of the filter plate is easier to be thrown off when the filter plate moves back along the left direction, thereby further improving the cleaning effect of the residual sludge on the filter plate as a whole; 4. The setting of the air nozzle enables the sludge residue on the end face of the filter plate to be further cleaned; in addition, since the filter plate in the present application swings back and forth, when multiple filter plates accelerate back along the left (or right) side at the same time, the sludge on the right end face (or left end face) of the filter plate will detach from the filter plate due to inertia, and the filter plate on the right (left) side of the filter plate will collide with the sludge just detached from the right (left) end face of the filter plate due to the return stroke to the left (right), causing the sludge to re-adhere to the adjacent filter plate. At this time, since the connecting rod and the filter plate swing simultaneously, the air nozzle on the connecting rod will also slide to the rightmost side of the swing groove due to inertia, that is, the air nozzle at this time is facing the filter plate on the right side of the filter plate, so that the air nozzle can blow off the sludge that has re-adhered to the adjacent filter plate, thereby further improving the sludge removal effect of the device as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a rear view of the overall structure of the embodiment of the present application; Figure 3 It is a structural schematic diagram of the toggle assembly in an embodiment of the present application; Figure 4 It is a schematic diagram of the structure of the filter plate in the embodiment of the present application; Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 is a schematic diagram of the connection between the gas nozzle and the connecting block in the embodiment of the present application; Figure 7 is a cross-sectional view of a connecting rod in an embodiment of the present application; Figure 8 yes Figure 7 The enlarged schematic diagram of point B in the middle; Figure 9 yes Figure 7 The enlarged schematic diagram of the center C; In the figure, 1, frame; 11, filter plate; 111, give way groove; 112, connecting groove; 12, hydraulic cylinder; 2, synchronization mechanism; 21, air bag; 22, air pump; 23, slide rail; 231, slide groove; 24, slide roller; 25, connecting rod; 251, air guide groove; 252, ring groove; 253, swing groove; 3, toggle assembly; 31, gear; 32, chain; 33, rotating rod; 34, connecting frame; 35, rotating motor; 36, toggle block; 4, air nozzle; 41, connecting block; 42, air guide hole; 5, transportation assembly; 6, air pump; 7, hose. DETAILED DESCRIPTION

[0015] The following is combined with Figures 1 - 9 , further details of this application are given.

[0016] A wastewater recycling treatment device for producing calcium dobesilate, referring to Figure 1 and Figure 2 , including: a frame 1 and a synchronization mechanism 2.

[0017] In this embodiment, the entire frame 1 is arranged horizontally, and a plurality of filter plates 11 are slidably arranged on the frame 1. The plurality of filter plates 11 can slide along the length direction of the frame 1, and two adjacent filter plates 11 can abut against each other. When two adjacent filter plates 11 abut against each other, a relatively closed chamber can be formed between the two adjacent filter plates 11. A hydraulic cylinder 12 is arranged on one side of the frame 1, and the extension direction of the output shaft of the hydraulic cylinder 12 is parallel to the sliding direction of the plurality of filter plates 11. When the sludge needs to be filtered, the output shaft of the hydraulic cylinder 12 is extended to drive the rightmost filter plate on the frame 1. The plate 11 moves in the direction close to the left side until all the filter plates 11 move in the direction close to the left side of the frame 1 and two adjacent filter plates 11 abut against each other, and then the sludge is transported to the closed chamber between each adjacent filter plate 11 through the corresponding transport equipment, and then pressure is applied to the closed chamber to reduce the volume of the closed chamber, thereby squeezing the sludge in the closed chamber, and then squeezing out the water in the sludge, and then the squeezed water flows out of the closed chamber along the through groove in the filter plate 11, thereby completing the dehydration treatment of the sludge (this is the prior art and will not be described in detail here).

[0018] The synchronization mechanism 2 in this embodiment includes a plurality of airbags 21. Each airbag 21 in this embodiment is configured to be cylindrical and have the same shape and size. Each airbag 21 is coaxially arranged in sequence along the sliding direction of the filter plate 11. An airbag 21 is evenly arranged between each adjacent filter plate 11. Except for the rightmost and leftmost filter plates 11 that do not have a connecting groove 112, all other filter plates 11 have connecting grooves 112. The connecting grooves 112 on each filter plate 11 are arranged to penetrate along the sliding direction of the filter plate 11, and the connecting grooves 112 on each filter plate 11 are used to connect the filter plates 11 to the corresponding airbags 21. The airbags 21 on both sides of the filter plate 11 are connected, and each filter plate 11 is provided with a clearance groove 111. When the hydraulic cylinder 12 squeezes all the filter plates 11 together, the airbags 21 in the uninflated state will shrink in the clearance groove 111 on the filter plate 11. Therefore, the airbags 21 will not affect the mutual abutment between adjacent filter plates 11, and further will not affect the closed chamber formed between adjacent filter plates 11. The frame 1 is also provided with an air pump 22 for inflating and deflating the airbags 21. The air pump 22 in this embodiment is connected to one of the airbags 21 through a hose 7.

[0019] When the sludge in the closed chamber between adjacent filter plates 11 is dried, all the filter plates 11 at this time are retracted to the left side of the frame 1. Start the hydraulic cylinder 12 to contract, driving the filter plate 11 at the rightmost end of the frame 1 to slide in the direction of the right end of the frame 1. At the same time, start the air pump 22 to inflate the airbag 21 communicated with it. Since all the airbags 21 are communicated through the communication grooves 112 on the filter plates 11, all the airbags 21 will expand in the direction of the sliding of the filter plates 11. During the expansion of the airbags 21, since there are airbags 21 between adjacent filter plates 11, the airbags 21 will push open the adjacent two filter plates 11. Then, because all the filter plates 11 in the initial state are close to the left side of the frame 1, when the airbags 21 push open the adjacent filter plates 11, except for the leftmost filter plate 11 that does not move, all the filter plates 11 will move to the right side of the frame 1. And because the shapes, sizes, and layout directions of all the airbags 21 are the same and all the airbags 21 are coaxially arranged, when the air pump 22 fills the gas in all the airbags 21, the distances between adjacent filter plates 11 are the same, that is, the length when the airbags 21 expand. In short, during the movement of the above-mentioned filter plates 11, since all the airbags 21 are in a connected state, the expansion of all the airbags 21 is basically simultaneous, that is, the separation of adjacent filter plates 11 is also basically simultaneous. The simultaneous mutual separation of adjacent filter plates 11 will cause the closed chambers between adjacent filter plates 11 to open simultaneously, so as to facilitate the simultaneous dropping of the dry sludge in the closed chambers between adjacent filter plates 11. Compared with the prior art method of moving the filter plates 11 one by one to the right by manpower or equipment to open the closed chambers between adjacent filter plates 11, the device in this embodiment can open all the closed chambers between adjacent filter plates 11 simultaneously for sludge discharge, thus greatly shortening the time required to separate the filter plates 11, and then greatly improving the working efficiency of this equipment.

[0020] Among them, referring to Figure 1 、 Figure 2 and Figure 3The synchronization mechanism 2 in this embodiment also includes two slide rails 23, which are installed on the frame 1, and the two slide rails 23 are relatively arranged on both sides of the sliding direction of the multiple filter plates 11. A slide groove 231 is opened on the slide rail 23, and the slide groove 231 is arranged along the sliding direction of the filter plate 11. Each filter plate 11 is fixedly provided with a slide roller 24 on both sides along the sliding direction. The two slide rollers 24 on each filter plate 11 correspond to the two slide rails 23 one by one. The slide roller 24 on the filter plate 11 is inserted into the slide groove 231 on the corresponding slide rail 23. The diameter of the slide roller 24 is smaller than the width of the slide groove 231 (that is, the slide roller 24 can perform a certain vertical movement in the slide groove 231). The slide roller 24 slides against the bottom groove wall of the slide groove 231, and the slide roller 24 can slide in the slide groove 231. Sliding along the length direction of the slide groove 231, each slide roller 24 is fixedly connected to a connecting rod 25 at one end away from the filter plate 11, the connecting rod 25 is arranged perpendicular to the axis of the slide roller 24, and the connecting rod 25 in this embodiment is located on the plane where the corresponding filter plate 11 is located, and the frame 1 is also provided with a toggle assembly 3 which can simultaneously drive all the connecting rods 25 (except the connecting rod 25 connected to the hydraulic cylinder 12) to swing back and forth around the connection between the filter plate 11 and the airbag 21. The toggle assembly 3 in this embodiment is provided with two groups. The multiple connecting rods 25 in this embodiment are also divided into two groups, one group is located on one side of the filter plate 11, and the other group is located on the other side of the filter plate 11. The two groups of connecting rods 25 correspond one-to-one to the two groups of toggle assemblies 3, and the driving frequencies of the two groups of toggle assemblies 3 are the same.

[0021] After all the air bags 21 are filled with air, the air bags 21 expand and separate all the filter plates 11 at the same time. At this time, the closed chambers between adjacent filter plates 11 are opened, and the sludge in the closed chambers falls out of the closed chambers under the action of gravity. However, some sludge may still adhere to the film of the filter plate 11 (i.e., the inner wall of the closed chamber) and has not fallen off. At this time, the filter plate 11 is in a vertical state, and some sludge adhered to the film of the filter plate 11 remains stationary. The gravity on the sludge and its adhesion to the groove surface (including viscosity and surface tension) are in a balanced state, so that the sludge will not fall off. Then the toggle assembly 3 is started, and the toggle assembly 3 drives the connecting rod 25 to rotate around the connection between the filter plate 11 and the airbag 21. Since the connecting rod 25 is located in the plane where the filter plate 11 is located, the connecting rod 25 will also drive the filter plate 11 to rotate around the axis of the sliding roller 24 through the sliding roller 24. When the filter plate 11 rotates, the filter plate 11 will be in a tilted state, and the direction of the gravity of the sludge on the film of the filter plate 11 will change, which can be decomposed into a component perpendicular to the filter plate 11 and a component parallel to the filter plate 11. At this time, the vertical component is reduced, resulting in a decrease in the contact tightness between the sludge and the film, and a weakened adhesion; while the parallel component causes the sludge to have a downward trend along the tilt direction of the filter plate 11. For the thin film at the lower end of the filter plate 11, the sliding direction of the sludge is consistent with the opening direction of the closed chamber, making it easier to destroy the adhesion. Once the tilt angle increases to a critical point, the sludge will fall off because it cannot maintain the balance of force. Therefore, when the toggle assembly 3 makes the filter plate 11 reciprocate through a certain amplitude through the connecting rod 25 and the sliding roller 24, the filter plate 11 can be tilted in different directions, so that the sludge on the thin films at both ends of the filter plate 11 can fall off more easily.

[0022] At the same time, the filter plate 11 will generate a certain centrifugal force during the swinging process. At this time, the direction of the centrifugal force is from the top of the filter plate 11 along the direction parallel to the film of the filter plate 11 close to the bottom of the filter plate 11. This direction coincides with the component of gravity on the sludge. Therefore, the sludge attached to the film of the filter plate 11 is easier to overcome the adhesion between the sludge and the film under the action of centrifugal force and gravity, so that the sludge will fall off the filter plate 11 more easily, thereby further avoiding the sludge from adhering to the filter plate 11 as much as possible.

[0023] Among them, refer to Figure 1 and Figure 3 The toggle assembly 3 in this embodiment includes a gear 31 , a rack, a rotating rod 33 , a connecting frame 34 and a rotating motor 35 .

[0024] In the present embodiment, two gears 31 are provided, and both gears 31 are rotatably mounted on the frame 1, and the two gears 31 are located on the same end surface of the frame 1, and the centers of the two gears 31 are located at the same height, and the chain 32 is sleeved on the two gears 31, and the chain 32 is meshed with the two gears 31 at the same time. In the present embodiment, two rotating rods 33 are also provided, and the two rotating rods 33 correspond to the two gears 31 one by one, and one end of the rotating rod 33 is fixedly connected to one end of the gear 31, and the end of the rotating rod 33 away from the gear 31 is rotatably connected to the connecting frame 34, and the two rotating rods 33 are rotatably connected to the connecting frame 34 at the same time, and the rotating rods 33 on the two gears 31 are always in a parallel state, and a plurality of shifting blocks 36 are provided on one end of the connecting frame 34 close to the connecting rod 25, and the plurality of shifting blocks 36 correspond to one of the plurality of connecting rods 25 in one group, and the shifting blocks 36 slide against the end of the connecting rod 25 away from the airbag 21, and the rotating motor 35 is fixedly mounted on the frame 1, and the output shaft of the rotating motor 35 is coaxially fixedly connected with one of the gears 31.

[0025] When the airbag 21 expands, all the filter plates 11 are separated at equal intervals, and the closed chambers between adjacent filter plates 11 are opened. Most of the sludge in the closed chambers drops from the chambers under the action of gravity. At this time, all the filter plates 11 are in a vertical state. Then, the rotation motor 35 is started, and the rotation motor 35 drives one of the gears 31 to rotate. Then, the gear 31 drives the other gear 31 to rotate through the chain 32. Since both gears 31 are engaged with the chain 32, the two gears 31 can rotate synchronously, and the rotating rods 33 on the two gears 31 can also rotate synchronously. Since the two rotating rods 33 are in a parallel state in the initial state, the two rotating rods 33 always remain parallel. Therefore, the two rotating rods 33 and the connecting frame 34 form a double-crank rocker mechanism, and the two rotating rods 33 are of the same length and parallel. Therefore, during the rotation of the connecting frame 34 along with the rotating rod 33, it can always be in a horizontal state. During the rotation of the connecting frame 34, the height of the connecting frame 34 will first rise and then fall. During the rising process of the connecting frame 34, the dial blocks 36 on the connecting frame 34 perform circular motion (that is, the motion trajectory of each dial block 36 is a circular arc). When the connecting frame 34 moves to the highest point, the dial block 36 will touch one end of the corresponding connecting rod 25. Then, as the connecting frame 34 continues to rotate, the dial block 36 will continue to perform circular motion, but the height of the dial block 36 will decrease as the connecting frame 34 continues to fall. At the same time, since the dial block 36 is performing circular motion, the dial block 36 will also exert a force perpendicular to the connecting rod 25 on the connecting rod 25. And the other end far from the connecting rod 25 is fixedly connected to the filter plate 11 through the slide rail 23. Therefore, the force exerted by the dial block 36 on the connecting rod 25 can be regarded as the force exerted by the dial block 36 on the filter plate 11, and this force is perpendicular to the filter plate 11. After the filter plate 11 receives the force from the dial block 36, since the top of the filter plate 11 is connected to the airbag 21, the bottom of the filter plate 11 will perform circular motion around the connection point of the filter plate 11 and the airbag 21. Therefore, the filter plate 11 will be in an inclined state. As the dial block 36 continues to move, the height of the dial block 36 becomes lower and lower as the height of the connecting frame 34 decreases, and the height of the bottom of the connecting rod 25 increases as the rotation angle of the filter plate 11 increases. Therefore, the connecting rod 25 and the dial block 36 will gradually slide and separate. After the connecting rod 25 and the dial block 36 are separated, the connecting rod 25 and the filter plate 11 will return to the vertical state under the action of gravity. Then, the rotation motor 35 is reversed, the connecting frame 34 is also reversed, and the dial block 36 on the connecting frame 34 is also reversed, and then it abuts against the other end of the corresponding connecting rod 25. As the dial block 36 and the connecting frame 34 continue to reverse, the connecting rod 25 and the filter plate 11 will tilt in the other direction. Therefore, by continuously reversing the rotation motor 35, the reciprocating swing of the filter plate 11 can be realized, that is, the inclination of the filter plate 11 is realized. And when the inclination of the filter plate 11 is not required, the rotation motor 35, the rotating rod 33 and the connecting frame 34 can be used to drive the dial block 36 to return to its original position.The filter plate 11 can be restored to a vertical state under the action of gravity.

[0026] It should be noted that, since the filter plate 11 in this embodiment is connected to the airbag 21, and the airbag 21 itself has a certain elasticity, when the toggle assembly 3 drives the filter plate 11 to swing to the right, the airbag 21 on the right side of the filter plate 11 will be squeezed, and the airbag 21 on the left side of the filter plate 11 will be stretched. Therefore, when the toggle block 36 in the toggle assembly 3 is separated from the connecting rod 25, the filter plate 11 and the connecting rod 25 will have a relatively large return acceleration (i.e., clockwise angular acceleration) due to the elastic force of the airbag 21, so the filter The speed of plate 11 changes relatively quickly, while the sludge on the right end face of filter plate 11 remains stationary due to inertia. At this time, filter plate 11 has rotated clockwise, so the sludge on the film at the right end of filter plate 11 is separated from the film, making it easier for the sludge on the right end face of filter plate 11 to be thrown off. Similarly, when the toggle assembly 3 drives the filter plate 11 to swing leftward, the sludge on the left end face of filter plate 11 is easier to be thrown off when the filter plate 11 moves back along the left side, thereby further improving the overall cleaning effect of the residual sludge on the filter plate 11.

[0027] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In this embodiment, all the connecting rods 25 are provided with air guide grooves 251 inside, and the air guide grooves 251 in this embodiment are arranged along the length direction of the connecting rods 25. In this embodiment, an air pump 6 is also provided on the frame 1, and a heating component is provided inside the air pump 6 in this embodiment, which can convert the blown wind into hot wind. The air pump 22 is connected with the air guide grooves 251 in the multiple connecting rods 25 through a hose 7. A plurality of air nozzles 4 are provided on the outer wall of the connecting rod 25, and the plurality of air nozzles 4 are connected with the air guide grooves 251. In this embodiment, three air nozzles 4 are provided on each connecting rod 25, and the air nozzles 4 on the connecting rod 25 are all facing the adjacent filter plates 11 corresponding to the filter plates 11 of the connecting rod 25. Since the toggle assembly 3 in this embodiment can drive all the connecting rods 25 to rotate synchronously, it can bring All the filter plates 11 are driven to rotate simultaneously, not only will all the filter plates 11 not collide with each other, but the synchronous rotation can make the air nozzle 4 on the connecting rod 25 always face the adjacent filter plate 11 of its corresponding filter plate 11. After all the filter plates 11 are separated, the air pump 6 is started, and the gas enters the air guide groove 251 through the hose 7, and then the hot air in the air guide groove 251 is ejected from the air nozzle 4, and the hot air ejected from the air nozzle 4 is blown onto the end surface of the filter plate 11 (that is, the film on the filter plate 11), which can further clean the sludge on the end surface of the filter plate 11, and the blown wind is hot air, which can dry the remaining sludge, so that the moisture in the remaining sludge is further evaporated, thereby reducing the viscosity of the sludge, and further facilitating the sludge to fall off the film of the filter plate 11.

[0028] In addition, the end of the air nozzle 4 in this embodiment close to the connecting rod 25 is provided with a semi-annular connecting block 41, and the end of the connecting block 41 away from the air nozzle 4 is provided with an air guide hole 42 connected with the air nozzle 4. The inner part of the peripheral wall of the connecting rod 25 is provided with an annular groove 252 coaxially arranged with the connecting rod 25, and the outer peripheral wall of the connecting rod 25 is provided with a swinging groove 253 for the air nozzle 4 to pass through. The swinging groove 253 is connected with the annular groove 252, and the semi-annular connecting block 41 is located in the annular groove 252. The air nozzle 4 passes through the swinging groove 253, and the connecting ring can reciprocate in the annular groove 252 around the axis of the connecting rod 25, thereby driving the air nozzle 4 to swing back and forth in the swinging groove 253 (refer to Figure 8 and Figure 9 ).

[0029] Since the filter plate 11 in this embodiment swings reciprocally, due to the rebounding effect of the airbag 21, when multiple filter plates 11 accelerate and return along the left side simultaneously, the sludge on the right end face of the filter plate 11 will break away from the filter plate 11 due to inertia. And the filter plate 11 on the right side of this filter plate 11 will hit the just-detached sludge on the right end face of this filter plate 11 when returning to the left, causing the sludge to re-adhere to the adjacent filter plate 11. At this time, since the connecting rod 25 and the filter plate 11 swing simultaneously, the air nozzle 4 on the connecting rod 25 will also remain stationary due to inertia. However, the connecting rod 25 has rotated to the left along with the filter plate 11. Therefore, the air nozzle 4 on the connecting rod 25 will slide relative to the connecting rod 25, and the air nozzle 4 on the connecting rod 25 will slide to the rightmost side of the swing groove 253, that is, the air nozzle 4 is now facing the filter plate 11 on the right side of this filter plate 11, enabling the air nozzle 4 to blow off the sludge that has re-adhered to the adjacent filter plate 11. Similarly, when multiple filter plates 11 accelerate and return along the right side simultaneously, the sludge on the left filter plate 11 of the filter plate 11 can be blown off, which further improves the sludge removal effect of this equipment as a whole.

[0030] Finally, a transportation component 5 for transporting the filtered sludge is further provided at the bottom of the frame 1 in this embodiment. The transportation component 5 in this embodiment is set as a conveyor belt, and the conveyor belt is located directly below the filter plate 11. When the sludge falls from the filter plate 11, the sludge lands on the conveyor belt, and then the conveyor belt transports the sludge to a designated place.

[0031] Working principle of a wastewater recycling treatment device for the production of calcium dobesilate in this embodiment: After the filter plates 11 squeeze out the water in the sludge in the closed chamber, all the filter plates 11 are close together at this time. Then, the hydraulic cylinder 12 is started to drive the rightmost filter plate 11 to slide to the right. At the same time, the air pump 22 is started to inflate the airbag 21. Since all the airbags 21 are connected, all the airbags 21 will expand simultaneously. And an airbag 21 is arranged between each adjacent pair of filter plates 11. Therefore, the airbags 21 will simultaneously push open the adjacent filter plates 11, so that the closed chambers between the adjacent filter plates 11 are opened simultaneously to facilitate the discharge of the sludge in the closed chambers. Compared with the prior art in which the filter plates 11 gathered together are separated one by one manually or by equipment, the synchronization mechanism 2 in this embodiment has higher working efficiency. At the same time, after all the filter plates 11 are separated, the filter plates 11 are in a vertical state at this time. Then, the rotation motor 35 is started and the rotation motor 35 rotates forward. The rotation motor 35 drives the connecting frame 34 to rotate clockwise through the gear 31, the chain 32 and the rotating rod 33. Then, the dial 36 on the connecting frame 34 also rotates clockwise. When the dial 36 moves to the highest point, the dial 36 will abut against the left end face of the bottom of the corresponding connecting rod 25. And as the dial 36 continues to move, the dial 36 drives the connecting rod 25 to rotate counterclockwise around the connection point of the connecting rod 25 and the airbag 21. The connecting rod 25 drives the filter plate 11 to rotate synchronously through the roller 24, so that the filter plate 11 is in a state of tilting in the direction close to the right. At this time, the balance of the external force on the sludge on the left end film of the filter plate 11 is broken, making it easier for the sludge adhering to the film to fall off. At the same time, during the rotation of the filter plate 11, the airbag 21 on the right side of the filter plate 11 is squeezed, and the airbag 21 on the left side is stretched. Therefore, as the filter plate 11 continues to rotate, the dial 36 in contact with it will slide and separate from the filter plate 11. And due to its certain elasticity, the airbag 21 will exert a reverse force on the filter plate 11, thereby driving the filter plate 11 to rotate counterclockwise. And due to the sudden release of the resilience of the airbag 21, the filter plate 11 has a relatively large angular acceleration when rotating clockwise (return rotation). And the sludge on the right side film of the filter plate 11 remains stationary due to inertia. Therefore, the sludge on the right side film of the filter plate 11 is separated from the filter plate 11, further facilitating the shedding of the remaining sludge on the filter plate 11 film. Similarly, after the sludge on the right side films of all the filter plates 11 is further cleaned, the rotation motor 35 is reversed, so that the filter plates 11 rotate clockwise, and finally the sludge on the left side films of the filter plates 11 is further cleaned, thereby improving the cleaning effect of the residual sludge on the filter plates 11.

[0032] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Identical components are denoted by identical reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A wastewater circulation treatment device for producing calcium dobesilate, characterized in that: include: A frame (1), wherein a plurality of filter plates (11) are slidably arranged on the frame (1), and a hydraulic cylinder (12) for squeezing the plurality of filter plates (11) is arranged on one side of the frame (1); The synchronization mechanism (2) comprises a plurality of airbags (21), wherein the plurality of airbags (21) are arranged along the sliding direction of the filter plate (11), and the plurality of airbags (21) are sequentially connected to each other, and a filter plate (11) is connected to the connecting point between each two adjacent airbags (21), and an air pump (22) for inflating and deflating the airbags (21) is also provided on the frame (1).

2. A wastewater circulation treatment device for producing calcium dobesilate according to claim 1, characterized in that: The synchronization mechanism (2) further comprises two slide rails (23), the two slide rails (23) being mounted on the frame (1), and the two slide rails (23) being arranged on both sides of the sliding direction of the plurality of filter plates (11), the slide rails (23) being provided with slide grooves (231), both sides of each filter plate (11) being provided with slide rollers (24), all the slide rollers (24) being slidably arranged in the slide grooves (231), one end of each slide roller (24) being away from the filter plate (11) being connected to a connecting rod (25), the connecting rod (25) being arranged perpendicular to the axis of the slide roller (24), and the frame (1) being further provided with a toggle assembly (3), the toggle assembly (3) being capable of simultaneously driving all the connecting rods (25) to swing back and forth around the connection between the filter plate (11) and the air bag (21).

3. A wastewater circulation treatment device for producing calcium dobesilate according to claim 2, characterized in that: The shifting assembly (3) comprises a gear (31), a chain (32), a rotating rod (33), a connecting frame (34) and a rotating motor (35). Two gears (31) are provided and are both rotatably mounted on the frame (1). The chain (32) is simultaneously meshed with the two gears (31). Two rotating rods (33) are also provided. The two rotating rods (33) correspond to the two gears (31) one by one. One end of the rotating rod (33) is fixedly connected to one end of the gear (31). One end of the two rotating rods (33) away from the gear (31) is simultaneously rotatably connected to the connecting frame (34). An end of the connecting frame (34) close to the connecting rod (25) is provided with a plurality of shifting blocks (36). The plurality of shifting blocks (36) correspond to the plurality of connecting rods (25) one by one, and the shifting blocks (36) are slidably abutted against the connecting rod (25). The rotating motor (35) is mounted on the frame (1) and is coaxially fixedly connected to one of the gears (31).

4. A wastewater circulation treatment device for producing calcium dobesilate according to claim 2, characterized in that: An air guide groove (251) is provided inside each of the plurality of connecting rods (25), the air guide groove (251) being connected to an external air source, and a plurality of air nozzles (4) are provided on the outer wall of the connecting rod (25), the plurality of air nozzles (4) being connected to the air guide groove (251), and the air nozzles (4) are directly facing the end surface of the filter plate (11).

5. A wastewater circulation treatment device for producing calcium dobesilate according to claim 4, characterized in that: A semi-annular connecting block (41) is provided at one end of the air nozzle (4) close to the connecting rod (25); an air guide hole (42) communicating with the air nozzle (4) is provided at one end of the connecting block (41) away from the air nozzle (4); an annular groove (252) coaxial with the connecting rod (25) is provided in the peripheral wall of the connecting rod (25); a swinging groove (253) for the air nozzle (4) to pass through is provided on the outer peripheral wall of the connecting rod (25); the swinging groove (253) is communicated with the annular groove (252), and the air guide hole (42) is communicated with the air guide groove (251); the connecting block (41) is located in the annular groove (252) and can slide back and forth in the annular groove (252); and the air nozzle (4) swings back and forth in the swinging groove (253).

6. A wastewater circulation treatment device for producing calcium dobesilate according to claim 5, characterized in that: The gas supplied by the external gas source has a certain temperature.

7. A wastewater circulation treatment device for producing calcium dobesilate according to claim 1, characterized in that: A transport component (5) for transporting filtered sludge is also provided at the bottom of the frame (1).

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