A solid-liquid separation device for the recovery of industrial solid waste

Abstract

The present invention relates to the field of industrial solid waste recycling, and discloses a solid-liquid separation device for industrial solid waste recycling, including a frame body. A pressing unit, a water supply unit, a feeding unit and a plurality of filter plates are arranged on the frame body. Each filter plate includes an outer frame, a partition plate is arranged inside the outer frame, and a diaphragm is arranged on each side of the partition plate. A water filling space is formed between the partition plate and any one of the diaphragms. The solid-liquid separation device for industrial solid waste recycling further includes a support assembly arranged in the water filling space. The support assembly includes two jacking strips, and the two jacking strips are respectively arranged on opposite sides in the water filling space. In the solid-liquid separation device for industrial solid waste recycling, by arranging the support assembly, when the water supply unit fills water into the filter plate, the two jacking strips move towards the middle of the water filling space at the same time, and the jacking strips squeeze the diaphragm to move towards the sludge and squeeze the sludge, so that when the diaphragm performs secondary filtration on the sludge, the filtration is more uniform, and the moisture in the filter cake can be further reduced.

Description

Technical Field

[0001] The present invention relates to the field of industrial solid waste recycling, and particularly to a solid-liquid separation device for industrial solid waste recycling. Background Art

[0002] Industrial solid waste refers to solid waste generated in industrial production activities, such as acid-base sludge in the chemical industry, waste foundry sand in the machinery industry, activated carbon slag in the food industry, animal and plant fiber scraps in the fiber industry, etc.; among them, when recovering and treating the acid-base sludge generated in the chemical industry, a filter press is usually used to press out the water in the acid-base sludge. After pressing, the acid-base sludge forms a mud cake, and finally the mud cake is recovered and treated.

[0003] For example, a patent with the publication number CN112221217B and the publication date of October 26, 2021 discloses a sludge filter press device, which includes a sludge filter press main body. Fixed rod mounting frames connected by bolts are installed on both sides of the sludge filter press main body. A fixed cross beam is fixedly installed inside the sludge filter press main body. While the distance between the independent filter plates is shortened, the sludge inside the filter cloth will be squeezed by force, so that the water inside the sludge filters out from the filter cloth and flows into the lower reservoir. The size of the filter cloth is the same as that of the independent filter plates, making the installation and connection more convenient. In addition, the balance collar and filter plate slider outside the independent filter plates can maintain the stability of the independent filter plates. The articulated connecting rod and the connecting rod can prevent excessive internal sludge from damaging the independent filter plates. After the filter press is completed, the multiple independent filter plates are slightly separated, and the filter cloth is separated from the independent filter plates, then the pressed sludge cake can be taken out. This kind of sludge filter press main body is extremely convenient to clean and has high stability, bringing great convenience to the cleaning work of the staff.

[0004] When the filter press presses the sludge, after the sludge is pressed once by multiple filter plates, the staff will open the water inlet pipe, and the water flows through the pipe into the filter plates, causing the diaphragm on the filter plates to expand. The expanded diaphragm performs a secondary press on the sludge to reduce the water content in the sludge. When the existing diaphragm expands, the cross section of the expanded diaphragm shape is approximately an arch shape, and the arch height in the central area of the diaphragm is higher than that in the edge area, so the secondary press on the sludge is not uniform. Summary of the Invention

[0005] The purpose of the present invention is to provide a solid-liquid separation device for industrial solid waste recycling to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A solid-liquid separation device for recycling industrial solid waste includes a frame, on which a compression unit, a water supply unit, a feed unit and a plurality of filter press plates are arranged, the filter press plates are connected to the water supply unit, each filter press plate includes an outer frame, a partition is arranged in the outer frame, a diaphragm is arranged on each side of the partition, a water-filled space is formed between the partition and any diaphragm, and also includes a support component arranged in the water-filled space, the support component includes two lifting bars, the two lifting bars are arranged on opposite sides of the water-filled space, when the water supply unit supplies water to the inside of the water-filled space, the two lifting bars are driven to approach each other to push the diaphragm to squeeze the sludge.

[0008] As mentioned above, two receiving grooves are symmetrically provided on the inner wall of the outer frame. The two receiving grooves correspond to the two lifting bars one by one. The receiving grooves are used to receive the corresponding lifting bars. The receiving grooves are located between the partition plate and the diaphragm.

[0009] As mentioned above, an electric-controlled telescopic rod is also arranged on the outer frame of the filter press plate, and the electric-controlled telescopic rod is connected to one of the lifting bars, and the electric-controlled telescopic rod pulls the lifting bar to move back and forth in the water-filled space.

[0010] The above-mentioned one side of the lifting strip close to the partition plate is provided with a water channel.

[0011] As mentioned above, the lifting bar includes a fixed part connected to the electric telescopic rod and a rotating part located at both ends. The surfaces of the two ends of the fixed part away from the partition are provided with clearance grooves. The rotating part is rotatably installed in the clearance groove through a connecting shaft. The connecting shaft is located at the end of the lifting bar, and the connecting shaft and the fixed part are connected by an adjustable torsion spring.

[0012] As mentioned above, the length of the rotating portion is consistent with the radius length of the opening.

[0013] As mentioned above, a locking portion is also provided on the fixed portion, and the locking portion is used to lock the rotating portion on the fixed portion. When the locking portion locks the rotation, the rotating portion and the fixed portion are arranged in parallel.

[0014] As mentioned above, the locking part includes a locking groove provided on the rotating part and a locking channel in the lifting strip, the locking channel is connected with the yielding groove, a locking rod is slidably installed in the locking channel, the locking rod is connected with the locking channel through a traction spring, when the traction spring is not subjected to force, one end of the locking rod extends into the yielding groove and is inserted into the locking groove on the rotating part, a traction wedge is fixedly installed on the other end of the locking rod, the surface of the traction wedge abuts against the push rod, and the other end of the push rod abuts against the surface of the partition.

[0015] As mentioned above, a triggering part is also provided on the partition, and the triggering part is used to release the locking part from locking the rotating part.

[0016] As described above, the triggering part includes an extrusion bump arranged on the partition plate. When the jacking bar moves to both sides of the opening at the center of the partition plate, the extrusion bump slides into the locking groove, and the extrusion bump drives the push rod to extrude the traction wedge block. The traction wedge block pulls the locking rod to separate from the locking groove. Moreover, a rotating gear is arranged on the connecting shaft. The rotating gear is an incomplete gear, and a mating rack meshing with the rotating gear is installed in the storage groove. The rotating gear meshes with the mating rack. When the rotating gear rotates, the rotating part is locked again by the locking part.

[0017] The beneficial effect of the present invention is that: in the above technical solution, by setting the support assembly, when the water supply unit fills water into the filter press plate, the water flow pushes one of the jacking bars in the support assembly to move from the edge of the water filling space to the middle, and the two jacking bars move towards the middle of the water filling space at the same time. The jacking bar squeezes the diaphragm to move towards the sludge and squeezes the sludge, so that when the diaphragm performs secondary filtration on the sludge, the filtration is more uniform, and the moisture in the filter cake can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is a schematic structural diagram of a solid-liquid separation device for industrial solid waste recycling provided by an embodiment of the present invention;

[0020] Figure 2 It is a front view of a solid-liquid separation device for industrial solid waste recycling provided by an embodiment of the present invention;

[0021] Figure 3 It is a connection diagram of multiple filter press plates provided by an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the cooperation between the diaphragm and the partition plate after primary filtration provided by an embodiment of the present invention;

[0023] Figure 5 It is a connection diagram between the electric control telescopic rod and the jacking bar provided by an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the state of the diaphragm after expansion provided by an embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of the state when the electric control telescopic rod reaches the maximum telescopic length provided by an embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the state when the locking part locks the rotating part provided by the embodiment of the present invention;

[0027] Figure 9 Schematic diagram of the state when the locking of the rotating part is released by the locking part provided by the embodiment of the present invention;

[0028] Figure 10 Schematic diagram of the structure of the locking part provided by the embodiment of the present invention;

[0029] Figure 11 Schematic diagram of the state when the jacking strip returns to the storage groove provided by the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Frame body; 2. Pressing unit; 3. Water supply unit; 4. Feeding unit; 5. Filter press plate; 51. Outer frame; 52. Partition board; 53. Water filling space; 54. Storage groove; 55. Opening; 56. Trigger part; 561. Extrusion bump; 57. Rotating gear; 58. Matching rack; 6. Diaphragm; 7. Support assembly; 71. Jacking strip; 711. Fixed part; 712. Rotating part; 713. Yielding sink; 714. Connecting shaft; 72. Water passing groove; 73. Locking part; 731. Locking channel; 732. Locking rod; 733. Traction spring; 734. Locking groove; 735. Traction wedge; 736. Push rod; 8. Electric control telescopic rod. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the attached Figures 1-11 , and the present invention will be further introduced in detail.

[0033] The embodiment of the present invention provides a solid-liquid separation device for industrial solid waste recycling, including a frame body 1, on which a pressing unit 2, a water supply unit 3, a feeding unit 4 and a plurality of filter press plates 5 are arranged. The filter press plates 5 are connected to the water supply unit 3, and a filter pressing space is defined between two adjacent filter press plates 5. Each filter press plate 5 includes an outer frame 51, a partition board 52 is arranged inside the outer frame 51, a diaphragm 6 is arranged on each side of the partition board 52, and a water filling space 53 is formed between the partition board 52 and any one of the diaphragms 6. It further includes a support assembly 7 arranged in the water filling space 53. The support assembly 7 includes two jacking strips 71, and the two jacking strips 71 are respectively arranged on opposite sides in the water filling space 53. When the water supply unit 3 supplies water into the water filling space 53, the two jacking strips 71 are driven to approach each other to push the diaphragm 6 to squeeze the sludge.

[0034] Specifically, the frame 1 is fixedly installed on the ground. A plurality of filter press plates 5 are vertically arranged and slidably installed on the frame 1 in the horizontal direction. In this embodiment, the pressing unit 2 is used to press the plurality of filter press plates 5. A filter pressing space is defined between two adjacent filter press plates 5. Among them, the pressing unit 2 can be selected as a combination of a hydraulic telescopic rod and a push plate. By the elongation of the hydraulic telescopic rod, the push plate pushes the plurality of filter press plates 5 to slide horizontally on the frame 1 to approach and press against each other. Among them, the outer frame 51 of the filter press plate 5 is rectangular, and the partition plate 52 is arranged inside the outer frame 51. A groove that is recessed inward is formed between the partition plate 52 and the outer frame 51 (the partition plate 52 serves as the bottom surface of the groove, and the outer frame 51 serves as the side wall of the groove). When two adjacent filter press plates 5 are in contact with each other, the grooves on the adjacent and close plate surfaces of the two adjacent filter press plates 5 are closely attached to form a chamber, that is, the filter pressing space. This chamber is used to store sludge. Moreover, an opening 55 is provided at the center of the partition plate 52. The sludge fills the filter pressing space between the plurality of filter press plates 5 through this opening 55. And in order to prevent the sludge from entering the water filling space 53, the diaphragm 6 has a central opening and should also be hermetically connected between the edge position of the opening 55 at the center of the partition plate 52. In addition, a drain port (the drain port is not shown in the prior art figure) is provided at the bottom of the filter press plate 5. The drain port is used to discharge the water separated by the extrusion of the sludge. Among them, the feeding unit 4 is composed of a storage box for storing sludge and a conveying pipe for conveying sludge. The conveying pipe connects the storage box with the filter press plates 5 on both sides. When it is necessary to perform filter pressing on the sludge, the pressing unit 2 presses the plurality of filter press plates 5. After pressing, a chamber for storing sludge is formed between the plurality of filter press plates 5. The staff conveys the sludge into the chamber formed by the plurality of filter press plates 5 under the action of the pressing unit 2 through the feeding unit 4. The sludge enters each filter pressing space in sequence through the opening 55. When the sludge fills all the chambers, under the pressure generated by conveying the sludge, a solid-liquid separation phenomenon occurs to the sludge. The water separated from the sludge flows out from the drain port at the bottom of the filter press plate 5, completing the first filter pressing treatment of the sludge. After that, the water supply unit 3 conveys water flow into the water filling space 53. Under the action of the water flow, the diaphragms 6 on both sides of the partition plate 52 arch up to perform secondary filter pressing on the sludge in the chamber, further reducing the water content in the sludge.

[0035] Obviously, after the first filter pressing treatment of the sludge, under the extrusion action of the sludge, the diaphragm 6 will closely adhere to the surface of the partition plate 52. Subsequently, during the secondary filter pressing, the water supply unit 3 fills the water filling space 53 with water flow to drive the expansion of the diaphragm 6. When the inside of the water filling space 53 is filled with water, under the action of the water flow, the diaphragm 6 forms an arch. At this time, the cross-section of the shape of the expanded diaphragm 6 is as Figure 6 shown and is approximately two spaced arch shapes, resulting in uneven secondary filter pressing of the sludge in the chamber by the diaphragm 6 and affecting the dehydration effect of the sludge.

[0036] To solve the above problems, a support assembly 7 is further provided in the water filling space 53. The support assembly 7 includes two jacking bars 71, which are respectively disposed on opposite sides within the water filling space 53 (in this embodiment, the two jacking bars 71 are arranged at intervals along the vertical direction, and in the initial state, both jacking bars 71 are in contact with the inner wall of the outer frame 51). Based on the water supply unit 3 supplying water into the water filling space 53, the two jacking bars 71 are driven to approach each other, and the two jacking bars 71 push the diaphragm 6 to squeeze the sludge.

[0037] Specifically, to ensure that the water flow conveyed by the water supply unit 3 can smoothly enter the water filling space 53, a water passage communicating with the water supply unit 3 should be provided in the outer frame 51. This water passage connects the water supply unit 3 and the water filling space 53. When the water supply unit 3 supplies water, the water flow enters the water filling space 53 through the water passage; moreover, there are two water outlets in the water filling space 53 for the water passage, and the two water outlets respectively correspond to the two jacking bars 71, and the water outlets are facing the sides of the corresponding jacking bars 71. And to assist the jacking bars 71 to reset, the jacking bars 71 can be connected to the side wall of the outer frame 51 through elastic members (such as springs or elastic ropes); when secondary pressure filtration of the sludge is required, with the water supply from the water supply unit 3, the water flow directly impacts the surface of the jacking bars 71, and the water flow pushes the jacking bars 71 to slide inside the water filling space 53, and the two jacking bars 71 approach each other, and the elastic members connecting the jacking bars 71 are stretched. When the water flow cannot push the jacking bars 71 to move further, as the water supply unit 3 continues to supply water into the water filling space 53, the diaphragm 6 deforms, and the water flow penetrates into the water filling space 53 between the two jacking bars 71 through the gap in the contact area between the jacking bars 71 and the diaphragm 6. When the diaphragm 6 is fully inflated, the water supply unit 3 stops supplying water, and the jacking bars 71 lose the impact of the water flow. At this time, the two jacking bars 71 move away from each other under the action of the elastic members. At this time, when the two jacking bars 71 moving away from each other pass by the diaphragm 6, they will squeeze the diaphragm 6 again and lift the diaphragm 6, further pressure filtering the sludge in the edge area of the diaphragm 6, so that the sludge can be pressure filtered more evenly and the water content in the produced filter cake can be reduced.

[0038] Preferably, two receiving grooves 54 are symmetrically provided on the inner wall of the outer frame 51. The two receiving grooves 54 correspond to the two jacking bars 71 one by one. The receiving grooves 54 are used to receive the corresponding jacking bars 71, and the receiving grooves 54 are located between the partition 52 and the diaphragm 6.

[0039] Specifically, in this embodiment, the central region of the diaphragm 6 refers to the region with a high arch height in the middle when the diaphragm 6 arches, and the edge region of the diaphragm 6 refers to the regions with low arch heights on both sides when the diaphragm 6 arches, that is, the peripheral edge region and the central opening region of the diaphragm 6. The central region is the region between the peripheral edge region and the central opening region. When the sludge is subjected to primary pressure filtration, both of the lifting strips 71 are received in the corresponding receiving grooves 54. After the primary pressure filtration is completed, when the sludge presses the diaphragm 6, the diaphragm 6 closely adheres to the inner wall of the outer frame 51 and the surface of the partition plate 52. When the sludge is subjected to secondary pressure filtration, as the water supply unit 3 fills the water filling space 53 with water, the lifting strips 71 gradually move away from the receiving grooves 54, and under the action of the water flow, the lifting strips 71 will move in the water filling space 53 to push the diaphragm 6 to press the sludge. Obviously, when the receiving grooves 54 on the outer frame 51 are located between the partition plate 52 and the diaphragm 6, the lifting strips 71 in the receiving grooves 54 are also located in the water filling space 53. At this time, when performing secondary pressure filtration, when the lifting strips 71 in the water filling space 53 move, they can lift the edge region of the diaphragm 6, improving the secondary pressure filtration effect on the sludge, making the sludge more evenly filtered during pressure filtration, further reducing the moisture in the sludge, and improving the solid-liquid separation effect of the sludge.

[0040] Obviously, the smaller the distance between the two lifting strips 71, the more of the diaphragm 6 the lifting strips 71 can squeeze, and at this time, a better solid-liquid separation effect can be achieved (in this embodiment, when the distance between the two lifting strips 71 is the smallest, the two lifting strips 71 are respectively placed on both sides of the opening 55 at the center of the partition plate 52). However, if the water flow is directly used to impact the lifting strips 71 to make the lifting strips 71 move in the water filling space 53, as the moving distance of the lifting strips 71 increases, the impact force of the water flow on the lifting strips 71 will become smaller and smaller until the lifting strips 71 stop moving. Therefore, it is easy to occur that the distance between the two lifting strips 71 is relatively far, and the maximum squeezing effect on the diaphragm 6 cannot be achieved, resulting in a decrease in the solid-liquid separation effect of the sludge.

[0041] Preferably, a plurality of electric control telescopic rods 8 are further provided on the outer frame 51 of the pressure filter plate 5, and the plurality of electric control telescopic rods 8 correspond one-to-one to the plurality of lifting strips 71 on the pressure filter plate 5. Among them, since there are two lifting strips 71 in one water filling space 53, each water filling space 53 corresponds to two electric control telescopic rods 8, and the two electric control telescopic rods 8 are respectively connected to the two lifting strips 71 in one water filling space 53. The electric control telescopic rods 8 pull the lifting strips 71 to move reciprocally in the water filling space 53, and a water passing groove 72 is provided on the side of the lifting strip 71 close to the partition plate 52.

[0042] Specifically, when secondary pressure filtration of the sludge is required, with the water supply from the water supply unit 3, the water flow enters the water filling space 53 through the water trough 72 on the lifting strip 71, causing the diaphragm 6 to expand into an arch shape. The expanded diaphragm 6 performs secondary pressure filtration on the sludge. Subsequently, the two electric control telescopic rods 8 work together. Driven by the two electric control telescopic rods 8, the two lifting strips 71 within the same water filling space 53 approach each other. When the two lifting strips 71 pass through the edge area of the diaphragm 6, they will lift the diaphragm 6 in this area. The lifted diaphragm 6 squeezes the sludge, enabling the diaphragm 6 in the edge area to perform pressure filtration more evenly. When the electric control telescopic rod 8 pulls the lifting strip 71 back to its original position, the lifting strip 71 passes through the edge area of the diaphragm 6 again, and the lifting strip 71 squeezes the diaphragm 6 again, achieving multiple squeezes on the diaphragm 6 in the edge area, further improving the solid-liquid separation effect of the sludge in the edge area and reducing the water content in the sludge.

[0043] It should be noted that the existing sludge forms a sludge cake after secondary pressure filtration. Although most of the water in the sludge cake is squeezed out through secondary pressure filtration, there is still water in the sludge cake, resulting in the sludge after secondary pressure filtration still being prone to adhering to the surface of the diaphragm 6. When multiple filter plates 5 are opened, the sludge adhering to the surface of the diaphragm 6 is not easily shed, and additional shoveling equipment is required to shovel the sludge cake off the surface of the diaphragm 6, thus affecting the pressure filtration efficiency of the sludge.

[0044] In this embodiment, after the secondary pressure filtration treatment is completed, the two electric control telescopic rods 8 start to work. The two electric control telescopic rods 8 respectively pull the lifting strips 71 connected to them back into the storage groove 54. Subsequently, the water supply unit 3 starts to work, and the water supply unit 3 pumps out the water flow in the water filling space 53. At this time, the diaphragm 6 loses the support of the water flow, and the diaphragm 6 re-adheres to the surface of the partition plate 52. Then, the pressing unit 2 releases the pressing force on the multiple filter plates 5, and the multiple filter plates 5 open. The sludge cake falls off the surface of the diaphragm 6 under the action of gravity. If the sludge cake adheres to the surface of the diaphragm 6, the electric control telescopic rod 8 on the corresponding filter plate 5 starts to work. The electric control telescopic rod 8 drives the lifting strip 71 connected to it to perform rapid reciprocating motion in the water filling space 53 (in this embodiment, the lifting strip 71 performs up and down reciprocating motion). Under the action of the lifting strip 71, the diaphragm 6 vibrates. Through the vibration of the diaphragm 6 itself, it assists in separating the diaphragm 6 from the sludge cake on its surface, indirectly improving the pressure filtration efficiency of the sludge.

[0045] Obviously, since an opening 55 for filling sludge is provided at the center of the partition plate 52 and the diaphragm 6 is hermetically connected to the opening 55, when the two lifting strips 71 are closest to each other, the two lifting strips 71 are respectively disposed on both sides of the opening 55 at the center of the partition plate 52. In this embodiment, the two lifting strips 71 are arranged at intervals in the vertical direction. Therefore, when the two lifting strips 71 move in the water filling space 53, the diaphragm 6 on the left and right sides of the opening 55 at the center of the partition plate 52 is not directly supported by contact with the two lifting strips 71. Thus, there will also be a problem of uneven extrusion when the sludge on both sides of this position is secondarily extruded (the width of this area is the diameter length of the opening 55).

[0046] In order to solve the above problems, preferably, in the present embodiment, the lifting bar 71 includes a fixed portion 711 connected to the electric telescopic rod 8 and a rotating portion 712 located at both ends. The surfaces of the two ends of the fixed portion 711 away from the partition 52 are provided with a clearance groove 713. The rotating portion 712 is rotatably installed in the clearance groove 713 through a connecting shaft 714. The length of the rotating portion 712 is consistent with the radius length of the opening 55. The connecting shaft 714 is located at the end of the lifting bar 71. The connecting shaft 714 is connected to the fixed portion 711 through an adjustable torsion spring (the adjustable torsion spring is not shown in the figure). The fixed portion 711 is also provided with a locking portion 73, and the locking portion 73 is used to lock the rotating portion 712 on the fixed portion 711. When the locking portion 73 locks the rotating portion 712, the rotating portion 712 and the fixed portion 711 are arranged in parallel. The partition plate 52 is also provided with a trigger portion 56, and the trigger portion 56 is used to release the locking portion 73 from locking the rotating portion 712; wherein the locking portion 73 includes a locking groove 734 provided on the rotating portion 712 and a locking channel 731 in the fixed portion 711, and the locking channel 731 is connected to the recessed groove 713, and the sliding portion 731 in the locking channel 731 is connected to the recessed groove 713. The locking rod 732 is dynamically installed, and the locking rod 732 is connected to the bottom wall of the locking channel 731 through a traction spring 733. When the traction spring 733 is not subjected to force, one end of the locking rod 732 extends into the yielding groove 713 and is inserted into the locking groove 734 on the rotating part 712. The other end of the locking rod 732 is fixedly installed with a traction wedge 735. The surface of the traction wedge 735 abuts against the push rod 736, and the other end of the push rod 736 abuts against the surface of the partition 52. The triggering part 56 includes an extrusion protrusion 561 arranged on the partition 52, and the extrusion protrusion 561 is arranged on the partition 52. 61 and the push rod 736 are wedge-shaped. When the lifting bar 71 moves to the two sides of the opening 55 at the center of the partition 52, the extrusion protrusion 561 and the push rod 736 are squeezed against each other. The extrusion protrusion 561 drives the push rod 736 to move toward the locking channel 731. The push rod 736 squeezes the traction wedge 735. The traction wedge 735 pulls the locking rod 732 to separate from the locking groove 734. In addition, a rotating gear 57 is provided on the connecting shaft 714. The rotating gear 57 is an incomplete gear. A matching rack 58 meshing with the rotating gear 57 is installed in the storage groove 54.

[0047] Specifically, in the initial state, the locking portion 73 locks the rotating portion 712 on the fixed portion 711. The rotating portion 712 and the fixed portion 711 are arranged in parallel, and the adjusting torsion spring accumulates elastic potential energy. At this time, the toothless area of the rotating gear 57 faces the mating rack 58. When the locking of the rotating portion 712 by the locking portion 73 is released, the adjusting torsion spring releases the accumulated elastic potential energy, and the rotating portion 712 deflects towards the opening 55 until the rotating portion 712 and the fixed portion 711 are perpendicularly arranged. At this time, the toothed area of the rotating gear 57 faces the mating rack 58. Subsequently, when the rotating gear 57 follows the lifting bar 71 into the receiving groove 54, the rotating gear 57 meshes with the mating rack 58.

[0048] When the sludge needs to be filtered for the second time, with the water supply of the water supply unit 3, the water flows through the water groove 72 on the lifting bar 71 into the water-filled space 53, so that the diaphragm 6 expands into an arch bridge shape, and the expanded diaphragm 6 performs secondary filtering on the sludge. Subsequently, the two electrically-controlled telescopic rods 8 work together. Driven by the two electrically-controlled telescopic rods 8, the two lifting bars 71 in the same water-filled space 53 approach each other. When the two lifting bars 71 pass through the edge area of the diaphragm 6, the diaphragm 6 in the area will be lifted up, and the lifted diaphragm 6 squeezes the sludge, so that the diaphragm 6 in the edge area of the diaphragm 6 can be filtered more evenly; when the electrically-controlled telescopic rod 8 reaches the maximum extension distance, at this time The two lifting bars 71 are respectively disposed at the upper and lower ends of the opening 55. At this time, the extrusion protrusion 561 squeezes the push rod 736, and the extrusion protrusion 561 drives the push rod 736 to move toward the locking channel 731. The push rod 736 squeezes the traction wedge 735, and the traction wedge 735 pulls the locking rod 732 to move in a direction away from the rotating portion 712. The locking rod 732 is separated from the locking groove 734 on the rotating portion 712. At this time, the adjusting torsion spring connected to the connecting shaft 714 releases the accumulated elastic potential energy, and the connecting shaft 714 rotates the rotating portion 712 on the fixed portion 711, and the rotating portion 712 deflects toward the direction of the outer frame 51 until the rotating portion 712 and the fixed portion 7 11 (at this time, because the connecting shaft 714 rotates, the rotating gear 57 on the connecting shaft 714 also rotates synchronously, so that the toothed area on the rotating gear 57 faces the direction of the matching rack 58), and because the length of the rotating portion 712 is the radius length of the opening 55, the rotating portions 712 on the two lifting bars 71 are deflected by ninety degrees, which is exactly the length of an opening 55. At this time, the areas on the left and right sides of the opening 55 that are not lifted by the lifting bars 71 can be lifted up, so that the sludge in the edge areas of the diaphragm 6 on the left and right sides of the opening 55 can also be squeezed for the second time, further improving the sludge filtration effect; when the electric control telescopic rod When the lifting bar 71 is pulled to re-enter the receiving groove 54, during the resetting process of the lifting bar 71, the rotating part 712 moves along the edge area of the diaphragm 6 after rotation, and performs secondary squeezing on the edge area of the diaphragm 6, thereby improving the filtration effect of the edge area of the diaphragm 6. When the lifting bar 71 enters the interior of the receiving groove 54, the rotating gear 57 is meshed with the matching rack 58, and the rotating gear 57 rotates with the connecting shaft 714, and the connecting shaft 714 re-enters the yielding groove 713 with the rotating part, and the locking rod 732 is also reinserted into the locking groove 734 on the rotating part 712 under the action of the pulling spring 733, thereby completing the resetting process of the rotating part 712.

[0049] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A solid-liquid separation device for recycling industrial solid waste, comprising a frame body (1), a pressing unit (2), a water supply unit (3), a feeding unit (4) and a plurality of filter plates (5) are arranged on the frame body (1). The filter plates (5) are connected to the water supply unit (3). Each filter plate (5) includes an outer frame (51), a partition plate (52) is arranged inside the outer frame (51), a diaphragm (6) is arranged on each side of the partition plate (52), and a water filling space (53) is formed between the partition plate (52) and any one of the diaphragms (6). It is characterized in that, Also includes: A support assembly (7) is disposed in the water-filled space (53), the support assembly (7) comprising two lifting bars (71), the two lifting bars (71) being disposed on two opposite sides of the water-filled space (53), and when the water supply unit (3) supplies water to the water-filled space (53), the two lifting bars (71) are driven to move closer to each other to push the diaphragm (6) to squeeze the sludge; Two receiving grooves (54) are symmetrically formed on the inner wall of the outer frame (51), the two receiving grooves (54) corresponding to the two lifting strips (71) one by one, the receiving grooves (54) are used to receive the corresponding lifting strips (71), and the receiving grooves (54) are located between the partition plate (52) and the diaphragm (6); An electrically controlled telescopic rod (8) is also provided on the outer frame (51) of the filter press plate (5). The electrically controlled telescopic rod (8) is connected to one of the lifting bars (71). The electrically controlled telescopic rod (8) pulls the lifting bar (71) to reciprocate in the water-filled space (53).

2. The solid-liquid separation device for industrial solid waste recycling according to claim 1, characterized in that, A water channel (72) is provided on one side of the lifting strip (71) close to the partition (52).

3. The solid-liquid separation device for industrial solid waste recycling according to claim 1, wherein, The lifting bar (71) comprises a fixed portion (711) connected to the electric telescopic rod (8) and a rotating portion (712) located at two ends. The surfaces of the two ends of the fixed portion (711) away from the partition (52) are provided with a clearance groove (713). The rotating portion (712) is rotatably mounted in the clearance groove (713) via a connecting shaft (714). The connecting shaft (714) is located at the end of the lifting bar (71), and the connecting shaft (714) and the fixed portion (711) are connected via an adjustable torsion spring.

4. The solid-liquid separation device for industrial solid waste recycling according to claim 3, characterized in that, The length of the rotating portion (712) is consistent with the radius length of the opening (55).

5. An apparatus for solid-liquid separation for the recycling of industrial solid waste according to claim 3, characterized in that, The fixed portion (711) is also provided with a locking portion (73), and the locking portion (73) is used to lock the rotating portion (712) on the fixed portion (711). When the locking portion (73) locks the rotating portion (712), the rotating portion (712) and the fixed portion (711) are arranged in parallel.

6. The solid-liquid separation device for industrial solid waste recycling according to claim 5, characterized in that, The locking portion (73) comprises a locking groove (734) formed on the rotating portion (712) and a locking channel (731) in the lifting strip (71). The locking channel (731) is connected to the yielding groove (713). A locking rod (732) is slidably mounted in the locking channel (731). The locking rod (732) is connected to the locking channel (731) via a traction spring (733). When the traction spring (733) is not subjected to force, one end of the locking rod (732) extends into the yielding groove (713) and is inserted into the locking groove (734) on the rotating portion (712). A traction wedge (735) is fixedly mounted on the other end of the locking rod (732). The surface of the traction wedge (735) abuts against the push rod (736), and the other end of the push rod (736) abuts against the surface of the partition plate (52).

7. An apparatus for solid-liquid separation for the recycling of industrial solid waste according to claim 6, characterized in that, A trigger portion (56) is also provided on the partition plate (52), and the trigger portion (56) is used to release the locking of the rotating portion (712) by the locking portion (73).

8. The solid-liquid separation device for industrial solid waste recycling according to claim 7, characterized in that, The trigger part (56) includes a pressing bump (561) provided on the partition plate (52). When the jacking bar (71) moves to both sides of the opening (55) at the center of the partition plate (52), the pressing bump (561) slides into the locking groove (734). The pressing bump (561) drives the push rod (736) to press the traction wedge block (735), and the traction wedge block (735) pulls the locking rod (732) to separate from the locking groove (734). Moreover, a rotating gear (57) is provided on the connecting shaft (714). The rotating gear (57) is an incomplete gear. A mating rack (58) meshing with the rotating gear (57) is installed in the storage groove (54). The rotating gear (57) meshes with the mating rack (58). When the rotating gear (57) rotates, the rotating gear (57) drives the rotating part (712) to be locked by the locking part (73) again.

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