Solid-liquid separation equipment for industrial solid waste recovery

Abstract

The invention relates to the field of industrial solid waste recycling, and discloses solid-liquid separation equipment for industrial solid waste recycling, which comprises a frame body, a pressing unit, a water supply unit, a material conveying unit and a plurality of filter pressing plates are arranged on the frame body, each filter pressing plate comprises an outer frame, a partition plate is arranged in each outer frame, and a diaphragm is arranged on each of the two sides of each partition plate; a water filling space is formed between the partition plate and any one of the diaphragms, the supporting assembly is arranged in the water filling space and comprises two jacking strips, and the two jacking strips are arranged on the two opposite sides in the water filling space respectively; according to the solid-liquid separation equipment for industrial solid waste recovery, by arranging the supporting assembly, when a water supply unit fills water into a filter pressing plate, two jacking strips move towards the middle of a water filling space at the same time, and the jacking strips extrude a diaphragm to move towards the direction of sludge and extrude the sludge, so that when the diaphragm carries out secondary filter pressing on the sludge, filter pressing is more uniform, and the filter pressing efficiency is improved; the moisture in the mud cake can be further reduced.

Description

Technical Field

[0001] The invention relates to the field of industrial solid waste recycling, and in particular to solid-liquid separation equipment for industrial solid waste recycling. Background Art

[0002] Industrial solid waste refers to solid waste generated during industrial production activities, such as acid and alkali sludge in the chemical industry, waste casting 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 recycling the acid and alkali sludge generated in the chemical industry, a filter press is usually used to press out the water in the acid and alkali sludge. The pressed acid and alkali sludge forms a mud cake, which is finally recycled.

[0003] For example, the patent with publication number CN112221217B and publication date October 26, 2021 discloses a sludge filter press device, including a sludge filter press main body, both sides of the sludge filter press main body are equipped with fixed rod mounting frames connected by bolts, and a fixed crossbeam is fixedly installed on the inner side of the sludge filter press main body. When the distance between the independent filter plates is shortened, the sludge in the filter cloth will be squeezed by force so that the moisture inside the sludge is filtered out of the filter cloth and flows into the water reservoir below. The size of the filter cloth is the same as that of the independent filter plate, which makes the installation and connection more convenient. In addition, the balancing ring and filter plate slider on the outside of the independent filter plate can maintain the stability of the independent filter plate, and the articulated connecting rod and connecting rod can prevent excessive internal sludge from causing damage to the independent filter plate. After the filtration is completed, the multiple independent filter plates are slightly separated, and the filter cloth is separated from the independent filter plate to take out the sludge cake after filtration. This type of sludge filter press main body is extremely easy to clean and has high stability, which brings great convenience to the cleaning of the staff.

[0004] When the filter press is filtering the sludge, after the sludge is filtered once through multiple filter press plates, the staff will open the water inlet pipe, and the water will flow into the filter press plate through the pipe, causing the diaphragm on the filter press plate to expand. The expanded diaphragm performs secondary filtering on the sludge to reduce the water content in the sludge. When the existing diaphragm expands, the cross-section of the expanded shape of the diaphragm is approximately an arch bridge shape, and the arch height of the central area of ​​the diaphragm is higher than the arch height of the edge area, so that the secondary filtration of the sludge is not uniform. Summary of the invention

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

[0006] In order to achieve the above object, 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 mentioned above, the triggering part includes an extrusion protrusion arranged on the partition. When the lifting bar moves to both sides of the opening at the center of the partition, the extrusion protrusion slides into the locking groove, and the extrusion protrusion drives the push rod to squeeze the traction wedge. The traction wedge pulls the locking rod to separate from the locking groove. In addition, a rotating gear is arranged on the connecting shaft. The rotating gear is an incomplete gear. A matching rack meshing with the rotating gear is installed in the storage groove. The rotating gear meshes with the matching rack. The rotating gear rotates, and the rotating gear drives the rotating part to be locked by the locking part again.

[0017] The beneficial effect of the present invention is that in the above technical scheme, by setting a support assembly, when the water supply unit fills water into the filter press plate, the water flow pushes one of the lifting bars in the support assembly to move from the edge of the water-filled space to the middle, and the two lifting bars move to the middle of the water-filled space at the same time. The lifting bars squeeze the diaphragm to move toward the sludge and squeeze the sludge, so that the diaphragm can perform secondary filtration on the sludge more evenly, and can further reduce the moisture in the mud cake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

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

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

[0021] Figure 3 A schematic diagram of the connection of multiple filter press plates provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the cooperation between the diaphragm and the partition plate after one filter press provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the connection between the electric-controlled telescopic rod and the lifting bar provided in an embodiment of the present invention;

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

[0025] Figure 7 A schematic diagram of a state when the electric-controlled telescopic rod provided in an embodiment of the present invention reaches the maximum telescopic length;

[0026] Figure 8 A schematic diagram of a state in which a locking portion provided by an embodiment of the present invention locks a rotating portion;

[0027] Fig. 9 A schematic diagram of a state in which the locking part according to an embodiment of the present invention releases the locking of the rotating part;

[0028] Fig.10 A schematic diagram of the structure of a locking portion provided by an embodiment of the present invention;

[0029] Fig.11 A schematic diagram of a state in which the lifting bar provided by an embodiment of the present invention is reset to the receiving groove.

[0030] Description of reference numerals:

[0031] 1. Frame; 2. Compressing unit; 3. Water supply unit; 4. Feeding unit; 5. Filter press plate; 51. Outer frame; 52. Partition plate; 53. Water filling space; 54. Storage tank; 55. Opening; 56. Trigger part; 561. Extrusion convex block; 57. Rotating gear; 58. Matching rack; 6. Diaphragm; 7. Support assembly; 71. Lifting bar; 711. Fixed part; 712. Rotating part; 713. Give way trough; 714. Connecting shaft; 72. Water trough; 73. Locking part; 731. Locking channel; 732. Locking rod; 733. Traction spring; 734. Locking slot; 735. Traction wedge; 736. Push rod; 8. Electric telescopic rod. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1-11 , the present invention is further introduced in detail.

[0033] The embodiment of the present invention provides a solid-liquid separation device for recycling industrial solid waste, including a frame 1, on which a compression 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 press space is enclosed between two adjacent filter press plates 5, each filter press plate 5 includes an outer frame 51, a partition plate 52 is arranged in the outer frame 51, a diaphragm 6 is arranged on each side of the partition plate 52, a water-filled space 53 is formed between the partition plate 52 and any diaphragm 6, and also includes a support assembly 7 arranged in the water-filled space 53, the support assembly 7 includes two lifting bars 71, the two lifting bars 71 are arranged on opposite sides of the water-filled space 53, when the water supply unit 3 supplies water to the inside of the water-filled space 53, the two lifting bars 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, and 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, and a filter pressing space is enclosed between two adjacent filter press plates 5, wherein the pressing unit 2 can be optionally a combination of a hydraulic telescopic rod and a push plate, and the push plate pushes the plurality of filter press plates 5 to slide horizontally on the frame 1 through the extension of the hydraulic telescopic rod to move closer to each other and press them; wherein the outer frame 51 of the filter press plate 5 is rectangular, and the partition plate 52 is arranged in the outer frame 51, and the partition plate 52 and the outer frame An inwardly concave groove is formed between the filter plates 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 close to each other, the grooves on the adjacent plate surfaces of the two adjacent filter press plates 5 are close to form a chamber, i.e., a filter press space, which is used to store sludge. In addition, an opening 55 is also opened at the center of the partition plate 52. The sludge fills the filter press space between the multiple filter press plates 5 through the opening 55. In order to prevent the sludge from entering the water-filled space 53, the center of the diaphragm 6 is opened and the edges of the opening 55 at the center of the diaphragm 6 and the partition plate 52 are closed. The positions should also be sealed and connected, and a drain port is also provided at the bottom of the filter press plate 5 (the drain port is not shown in the prior art figure), and the drain port is used to discharge the water separated by the sludge being squeezed, wherein the feeding unit 4 is composed of a storage box for storing the sludge and a conveying pipe for conveying the sludge, and the conveying pipe connects the storage box with the filter press plates 5 located on both sides; when the sludge needs to be filtered, the pressing unit 2 presses the multiple filter press plates 5, and after pressing, a chamber for storing the sludge is formed between the multiple filter press plates 5, and the staff conveys the sludge to multiple filter press plates 5 through the feeding unit 4. In the chamber formed by the filter press plates 5 under the action of the pressing unit 2, the sludge enters each filter press space in turn through the opening 55. When the sludge fills all the chambers, the sludge undergoes solid-liquid separation under the pressure generated by conveying the sludge, and 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 press treatment of the sludge. Afterwards, the water supply unit 3 conveys water to the water filling space 53. Under the action of the water flow, the diaphragms 6 on both sides of the partition 52 are arched, and the sludge in the chamber is subjected to secondary filter press, further reducing the water content in the sludge.

[0035] Obviously, after the sludge is subjected to a primary filter press treatment, the membrane 6 will be closely attached to the surface of the partition plate 52 under the squeezing effect of the sludge. When the secondary filter press is performed later, the water supply unit 3 injects water into the water filling space 53 to drive the expansion of the membrane 6. When the water filling space 53 is filled with water, the membrane 6 is arched under the action of the water flow. At this time, the cross-section of the expanded shape of the membrane 6 is as shown in FIG. Figure 6 The shape shown is approximately two spaced arch bridges, which causes the secondary filtration of the sludge in the chamber by the diaphragm 6 to be uneven, thus affecting the dehydration effect of the sludge.

[0036] In order to solve the above problem, a support assembly 7 is further provided in the water-filled space 53. The support assembly 7 includes two lifting bars 71. The two lifting bars 71 are disposed on opposite sides of the water-filled space 53 (in the present embodiment, the two lifting bars 71 are spaced apart vertically up and down, and in the initial state, the two lifting bars 71 are both close to the inner wall of the outer frame 51). Based on the water supply unit 3 supplying water to the inside of the water-filled space 53, the two lifting bars 71 are driven to approach each other, and the two lifting bars 71 push the diaphragm 6 to squeeze the sludge.

[0037] Specifically, in order to ensure that the water flow transported by the water supply unit 3 can smoothly enter the water-filled space 53, a water channel connected to the water supply unit 3 should be opened in the outer frame 51, and the water channel connects the water supply unit 3 with the water-filled space 53. When the water supply unit 3 supplies water, the water flows into the water-filled space 53 through the water channel; and, the water channel has two water outlets in the water-filled space 53, and the two water outlets correspond to two lifting bars 71 respectively, and the water outlets are opposite to the side surfaces of the corresponding lifting bars 71, and, in order to assist the lifting bars 71 in resetting, the lifting bars 71 can be connected to the side walls of the outer frame 51 by elastic parts (such as springs or elastic ropes); when the sludge needs to be subjected to secondary filtration, with the water supply of the water supply unit 3, the water flow directly impacts the surface of the lifting bars 71, and the water flow pushes the lifting bars 71 in the water-filled space 5 3, the two lifting bars 71 approach each other, and the elastic member connecting the lifting bars 71 is stretched. When the water flow cannot push the lifting bars 71 to continue to move, as the water supply unit 3 continues to fill the water filling space 53 with water, the diaphragm 6 is deformed, and the water flow penetrates into the water filling space 53 between the two lifting bars 71 through the gap between the lifting bars 71 and the contact area of ​​the diaphragm 6. When the diaphragm 6 is fully expanded, the water supply unit 3 stops supplying water, and the lifting bars 71 lose the impact of the water flow. At this time, the two lifting bars 71 move away from each other under the action of the elastic member. At this time, the two lifting bars 71 moving away from each other will squeeze the diaphragm 6 again and lift up the diaphragm 6 when passing through the diaphragm 6, and further filter the sludge in the edge area of ​​the diaphragm 6, so that the sludge can be filtered more evenly and the moisture content in the generated mud 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 lifting bars 71 one by one. The receiving grooves 54 are used to receive the corresponding lifting bars 71 , and the receiving grooves 54 are located between the partition plate 52 and the diaphragm 6 .

[0039] Specifically, in the present embodiment, the central area of ​​the diaphragm 6 refers to the area with the highest arch height in the middle when the diaphragm 6 is arched, and the edge area of ​​the diaphragm 6 refers to the area with the lowest arch height on both sides when the diaphragm 6 is arched, that is, the peripheral edge area of ​​the diaphragm 6 and the area with the central opening, and the central area is the area between the peripheral edge area and the area with the central opening. When the sludge is subjected to a first filter press treatment, the two lifting strips 71 are both received in the corresponding receiving grooves 54. After the first filter press treatment is completed, the sludge squeezes the diaphragm 6, and the diaphragm 6 is tightly attached to the inner wall of the outer frame 51 and the surface of the partition plate 52. When the sludge is subjected to a second filter press treatment, as the water supply unit 3 is fed to the water filling air, the sludge is pressed into the water filling air. The interior of the space 53 is filled with water, and the lifting bar 71 gradually leaves the receiving groove 54. Under the action of the water flow, the lifting bar 71 will move in the water-filled space 53, pushing the diaphragm 6 to filter the sludge. Obviously, when the receiving groove 54 on the outer frame 51 is located between the partition 52 and the diaphragm 6, the lifting bar 71 located in the receiving groove 54 is also located in the water-filled space 53. At this time, when performing secondary filtration, the lifting bar 71 located in the water-filled space 53 can lift up the edge area of ​​the diaphragm 6 when moving, thereby improving the secondary filtration effect on the sludge, making the sludge more evenly filtered during 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 bars 71, the more the lifting bars 71 can squeeze the diaphragm 6, and then a better solid-liquid separation effect can be achieved (in the present embodiment, when the distance between the two lifting bars 71 is the smallest, the two lifting bars 71 are placed on both sides of the opening 55 at the center of the partition 52). However, if the lifting bars 71 are directly impacted by water flow to move the lifting bars 71 in the water-filled space 53, as the moving distance of the lifting bars 71 increases, the impact force of the water flow on the lifting bars 71 will become smaller and smaller until the lifting bars 71 stop moving. As a result, it is easy for the distance between the two lifting bars 71 to be too 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 electrically-controlled telescopic rods 8 are also provided on the outer frame 51 of the filter press plate 5, and the plurality of electrically-controlled telescopic rods 8 correspond one-to-one to the plurality of lifting bars 71 on the filter press plate 5. Since there are two lifting bars 71 in one water-filled space 53, each water-filled space 53 corresponds to two electrically-controlled telescopic rods 8. The two electrically-controlled telescopic rods 8 are respectively connected to the two lifting bars 71 in one water-filled space 53. The electrically-controlled telescopic rods 8 pull the lifting bars 71 to reciprocate in the water-filled space 53, and a water groove 72 is provided on the side of the lifting bar 71 close to the partition 52.

[0042] Specifically, 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, causing the diaphragm 6 to expand 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, and the two lifting bars 71 will lift the diaphragm 6 in the edge area when passing through the edge area of ​​the diaphragm 6. 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 pulls the lifting bar 71 to reset, the lifting bar 71 passes through the edge area of ​​the diaphragm 6 again, and the lifting bar 71 squeezes the diaphragm 6 again, thereby achieving multiple squeezing of the diaphragm 6 in the edge area, further improving the solid-liquid separation effect of the sludge in the edge area, and reducing the moisture content in the sludge.

[0043] It should be noted that the existing sludge forms a mud cake after secondary filtration. Although most of the water in the mud cake is pressed out after the secondary filtration, the mud cake still contains water, which causes the sludge after the secondary filtration to easily adhere to the surface of the diaphragm 6. When multiple filter press plates 5 are opened, the sludge adhered to the surface of the diaphragm 6 is not easy to fall off, and additional scraping equipment is required to scrape the mud cake off the surface of the diaphragm 6, thereby affecting the sludge filtration efficiency.

[0044] In this embodiment, after the secondary filter pressing treatment is completed, the two electrically controlled telescopic rods 8 start to work, and the two electrically controlled telescopic rods 8 respectively pull the jacking bars 71 connected thereto back into the storage tank 54. Subsequently, the water supply unit 3 starts to work, and the water supply unit 3 draws out the water flow in the water-filled space 53. At this time, the diaphragm 6 loses the support of the water flow, and the diaphragm 6 is again attached to the surface of the partition plate 52. After that, the pressing unit 2 releases the pressing effect on the multiple filter press plates 5, and the multiple filter press plates 5 are opened, and the mud cake is pressed under the gravity. Under the action of the lifting bar 71, the diaphragm 6 is separated from the surface of the diaphragm 6. If the mud cake adheres to the surface of the diaphragm 6, the electrically-controlled telescopic rod 8 on the corresponding filter press plate 5 starts to work, and the electrically-controlled telescopic rod 8 carries the lifting bar 71 connected thereto to perform rapid reciprocating motion in the water-filled space 53 (in this embodiment, the lifting bar 71 reciprocates up and down). Under the action of the lifting bar 71, the diaphragm 6 shakes, and the shaking of the diaphragm 6 itself assists in separating the diaphragm 6 from the mud cake on its surface, thereby indirectly improving the sludge filtration efficiency.

[0045] Obviously, since an opening 55 for filling sludge is provided at the center of the partition 52 and the diaphragm 6 is sealed and connected to the opening 55, when the two lifting bars 71 are closest to each other, the two lifting bars 71 are disposed on both sides of the opening 55 at the center of the partition 52. In this embodiment, the two lifting bars 71 are vertically spaced apart. Therefore, when the two lifting bars 71 move in the water-filled space 53, the diaphragm 6 on the left and right sides of the opening 55 at the center of the partition 52 is not directly contacted and supported by the two lifting bars 71. Therefore, there will be a problem of uneven extrusion when the sludge on both sides of this position is subjected to secondary extrusion (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 fixing portion 711, the rotating portion 712 and the fixing 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 matching rack 58; when the locking portion 73 releases the locking of the rotating portion 712, the adjusting torsion spring releases the accumulated elastic potential energy, and the rotating portion 712 deflects toward the direction of the opening 55 until the rotating portion 712 and the fixing portion 711 are arranged vertically. At this time, the toothed area of ​​the rotating gear 57 faces the matching rack 58, and when the rotating gear 57 follows the lifting bar 71 to enter the storage groove 54, the rotating gear 57 meshes with the matching 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] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions 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 (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), each filter press plate (5) comprises an outer frame (51), a partition plate (52) is arranged in the outer frame (51), a diaphragm (6) is arranged on each side of the partition plate (52), and a water-filled space (53) is formed between the partition plate (52) and any diaphragm (6), characterized in that: Also includes: A support assembly (7) is arranged in the water-filled space (53), and the support assembly (7) includes two lifting bars (71). The two lifting bars (71) are arranged on two opposite sides of the water-filled space (53). 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.

2. The solid-liquid separation equipment for recycling industrial solid waste according to claim 1, characterized in that: Two receiving grooves (54) are symmetrically formed on the inner wall of the outer frame (51), the two receiving grooves (54) correspond 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).

3. The solid-liquid separation equipment for recycling industrial solid waste according to claim 2, characterized in that: 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).

4. The solid-liquid separation equipment for recycling industrial solid waste according to claim 3, characterized in that: A water channel (72) is provided on one side of the lifting strip (71) close to the partition (52).

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

6. The solid-liquid separation equipment for recycling industrial solid waste according to claim 5, characterized in that: The length of the rotating portion (712) is consistent with the radius length of the opening (55).

7. The solid-liquid separation equipment for recycling industrial solid waste according to claim 5, characterized in that: The fixed portion (711) is also provided with a locking portion (73), which 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.

8. The solid-liquid separation equipment for recycling industrial solid waste according to claim 7, characterized in that: The locking portion (73) comprises a locking groove (734) provided 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 installed in the locking channel (731); the locking rod (732) is connected to 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 portion (712); a traction wedge (735) is fixedly installed on the other end of the locking rod (732); the surface of the traction wedge (735) abuts against the pushing rod (736); the other end of the pushing rod (736) abuts against the surface of the partition (52).

9. The solid-liquid separation equipment for recycling industrial solid waste according to claim 8, characterized in that: A triggering portion (56) is also provided on the partition plate (52), and the triggering portion (56) is used to release the locking of the rotating portion (712) by the locking portion (73).

10. The solid-liquid separation equipment for recycling industrial solid waste according to claim 9, characterized in that: The triggering part (56) comprises a pressing protrusion (561) arranged on the partition (52). When the lifting bar (71) moves to the two sides of the opening (55) at the center of the partition (52), the pressing protrusion (561) slides into the locking groove (734). The pressing protrusion (561) drives the pushing rod (736) to press 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 arranged 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). The rotating gear (57) meshes with the matching rack (58). The rotating gear (57) rotates, and the rotating gear (57) drives the rotating part (712) to be locked by the locking part (73) again.

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