A solid-liquid separation treatment device for sludge

Abstract

The utility model relates to solid -liquid separation technical field, and disclose a kind of solid -liquid separation treatment equipment for sludge, including rack, and one end of rack is slidably connected with compression plate, and the other end of rack is fixedly connected with thrust plate, further including filter plate group that multiple filter plates are sequentially arranged, filter plate group is installed between compression plate and thrust plate, and rack is fixedly connected with slide bar, and filter chamber is formed between two adjacent filter plates, and both ends of filter plate are fixedly connected with sliding seat, and sliding seat is slidably connected with slide bar, and two adjacent filter plates are connected by pull rod, multiple through holes are provided on sliding seat, and pull rod passes through the through hole in two adjacent filter plates, when compression plate returns, two adjacent filter plates are unfolded by pull rod;The utility model carries out linkage by pull rod to adjacent filter plate, can realize piece by piece to pull open, can save strength, improve efficiency, simultaneously without motor, chain or the use of mechanical hand etc., can reduce maintenance and use cost.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, specifically to a solid-liquid separation treatment device for sludge. Background Technology

[0002] With the acceleration of urbanization and the continuous development of industrial production, the amount of sludge generated during wastewater treatment is increasing daily. Sludge is characterized by high water content, large volume, and complex composition. If discharged directly without effective treatment, it not only occupies a large amount of land resources but may also cause serious pollution to soil, water bodies, and the ecological environment. Therefore, efficient and economical reduction, stabilization, and harmless treatment of sludge has become an important issue in the current environmental protection field.

[0003] In sludge treatment processes, solid-liquid separation is a crucial step in achieving sludge volume reduction and subsequent resource utilization. Currently, commonly used solid-liquid separation equipment mainly includes belt filter presses, centrifugal dewatering machines, vacuum filters, and plate and frame filter presses. Among these, plate filter presses are widely used in the treatment of various types of sludge, including municipal sludge, chemical sludge, dyeing and printing sludge, and electroplating sludge, due to their advantages such as compact structure, high dewatering efficiency, low filter cake moisture content, and wide applicability.

[0004] Traditional plate filter presses mainly consist of filter plates, filter cloth, a pressing device, and a hydraulic system. They use high pressure to squeeze water out of sludge, forming a filter cake with low moisture content. However, in existing technologies, during unloading, the pressing plate retracts, and the filter plates are manually or automatically pulled apart piece by piece using a motor, chain, or robotic arm. Manual pulling is time-consuming, labor-intensive, and inefficient, while motors and chains are complex and costly, making them unsuitable for most applications. Utility Model Content

[0005] This utility model provides a solid-liquid separation treatment device for sludge. By linking two adjacent multi-filter plates together via a pull rod, the filter plates can be automatically pulled apart piece by piece when the pressure plate moves backward. This solves the problems mentioned in the background art, such as the time-consuming and labor-intensive manual pulling apart, low efficiency, and the complex structure and high cost of motors and chains in the prior art.

[0006] This utility model provides the following technical solution: A solid-liquid separation treatment device for sludge includes a frame, a pressing plate slidably connected to one end of the frame, and a thrust plate fixedly connected to the other end of the frame. It also includes a filter plate assembly composed of multiple filter plates arranged sequentially, with the filter plate assembly installed between the pressing plate and the thrust plate. A sliding rod is fixedly connected to the frame, forming a filter chamber between adjacent filter plates. Sliding seats are fixedly connected to both ends of each filter plate, and the sliding seats are slidably connected to the sliding rods. Adjacent filter plates are connected by a pull rod, and the sliding seats have multiple through holes. The pull rod passes through the through holes of adjacent filter plates. When the pressing plate returns to its original position, the adjacent filter plates unfold via the pull rod.

[0007] As a preferred embodiment of this utility model, a spring is sleeved on the pull rod, and the spring abuts against two adjacent sliding seats respectively.

[0008] As a preferred embodiment of this utility model, the through holes are provided in three places, namely the first hole, the second hole and the third hole, and the pull rod is alternately located in the first hole, the second hole and the third hole according to the arrangement of the filter plates.

[0009] As a preferred embodiment of this utility model, the sliding seat includes a fixed plate, one end of which is fixedly connected to the filter plate. The through hole is formed on the fixed plate, and a first sliding groove is formed on the fixed plate. A rotating plate is connected to the bottom of the fixed plate. One end of the rotating plate is rotatably connected to the fixed plate, and the other end of the rotating plate is detachably connected to the fixed plate by bolts. A second sliding groove corresponding to the first sliding groove is formed on the rotating plate, and the sliding rod passes through the limiting hole formed by the first and second sliding grooves.

[0010] As a preferred embodiment of this utility model, the filter plate has a filter cavity, both ends of which are fixedly connected to filter cloth, and the filter plate has a drainage hole that communicates with the filter cavity.

[0011] As a preferred embodiment of this utility model, a pipe is fixedly connected to the filter plate, and both ends of the pipe are respectively connected to the filter chamber. A feed pipe for adding material into the filter chamber is fixedly connected to the thrust plate.

[0012] As a preferred embodiment of this utility model, one end of the pull rod is fixedly connected to a limiting plate, and the other end of the pull rod is threadedly connected to a nut.

[0013] As a preferred embodiment of this utility model, sealing gaskets are fixedly connected to both ends of the filter plate.

[0014] Compared with the prior art, this utility model provides a solid-liquid separation treatment device for sludge, which has the following beneficial effects: 1. In this solid-liquid separation treatment equipment for sludge, the adjacent filter plates are linked by tie rods. When unfolded, the filter plates 2 can be pulled apart piece by piece. This not only has a simple structure, but also saves effort and improves efficiency. At the same time, without the use of other driving components (motor, chain or robotic arm, etc.), it can reduce maintenance and operating costs.

[0015] The parts of this device not covered are the same as or can be implemented using existing technology. The adjacent filter plates of this utility model are linked by pull rods, which can realize the opening of each plate one by one, which can save effort and improve efficiency. At the same time, without the use of motors, chains or robotic arms, it can reduce maintenance and usage costs. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the filter plate assembly of this utility model in its first state; Figure 3 This is a three-dimensional schematic diagram of the filter plate assembly of this utility model in its second state; Figure 4 This is a plan view of the present invention; Figure 5 This is a cross-sectional schematic diagram of the filter plate of this utility model.

[0018] In the diagram: 1. Frame; 101. Pressure plate; 102. Thrust plate; 103. Feed pipe; 104. Drain pipe; 105. Collection box; 2. Filter plate; 201. Filter chamber; 202. Pipe; 203. Drain hole; 3. Filter cloth; 4. Fixing plate; 401. Through hole; 402. First slide groove; 5. Rotating plate; 501. Second slide groove; 6. Tie rod; 7. Spring; 8. Sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Reference Figures 1-5A solid-liquid separation treatment device for sludge includes a frame 1, with a pressing plate 101 slidably connected to one end of the frame 1. The pressing plate 101 is preferably driven by a hydraulic cylinder. A thrust plate 102 is fixedly connected to the other end of the frame 1. The device also includes a filter plate group 2 composed of multiple filter plates 2 arranged sequentially. The filter plate group 2 is installed between the pressing plate 101 and the thrust plate 102. The filter plates 2 at both ends of the filter plate group 2 are fixedly connected to the thrust plate 102 and the pressing plate 101, respectively. A sliding rod is fixedly connected to the frame 1. Adjacent... Filter chambers are formed between the filter plates 2, and filter cavities 201 are opened inside the filter plates 2. Filter cloths 3 are fixedly connected to both ends of the filter cavities 201. Connection holes communicating with the filter cavities 201 are opened on the side walls of the filter plates 2, and drainage holes 203 communicating with the filter cavities 201 are opened on the filter plates 2. A drainage pipe 104 is fixedly connected to the thrust plate 102. When all the filter plates 2 are tightly fitted, the drainage holes 203 and drainage pipes 104 are connected, and the water filtered by the filter cloths 3 can be discharged outward through the drainage holes 203 and drainage pipes 104. Sealing gaskets 8 are fixedly connected to both ends of the filter plates 2 to ensure the sealing effect between the filter chambers and the multiple drainage holes 203 and the drainage pipes 104, improving the performance. Pipes 202 are fixedly connected to the filter plates 2, and both ends of the pipes 202 are connected to the filter chambers, that is, adjacent filter chambers are connected through pipes 202. A feed pipe 103 for adding material to the filter chambers is fixedly connected to the thrust plate 102. Both ends of the filter plate 2 are fixedly connected to sliding seats, which are slidably connected to sliding rods. Adjacent filter plates 2 are connected by pull rods 6. Multiple through holes 401 are provided on the sliding seats, and the pull rods 6 pass through the through holes 401 of adjacent filter plates 2. When the pressing plate 101 returns, adjacent filter plates 2 unfold via the pull rods 6. In use, the pressing plate 101 is driven by a hydraulic cylinder to slide towards the thrust plate 102, pushing all filter plates 2 tightly together, forming filter chambers between adjacent filter plates 2. Sludge to be separated is then added to the filter chambers through the feed pipe 103 until the pressure in the feed pipe 103 and the filter chamber reaches the required value, at which point the feed pump is started to press the sludge slurry into the filter chambers. Under pressure (typically 0.6-1.6 MPa), the filtrate passes through the filter cloth 3 into the filter chamber 201, flows through the drain hole 203 to the drain pipe 104, and is discharged. Solid particles accumulate in the filter chambers to form a filter cake. After the feeding is completed and the drain pipe 104 and feed pipe 103 are closed, compressed air is introduced into the filter chamber 201 through the connection hole to make the filter cloth 3 bulge and to squeeze the filter cake a second time, which can further reduce the moisture content (to below 50%).The hydraulic cylinder drives the clamping plate 101 to retract and reset. The first filter plate 2 is pulled open by the clamping plate 101. After being pulled open a certain distance, the first filter plate 2 can slide along the pull rod 6, pulling the second filter plate 2. Then, the second filter plate 2 can slide along the pull rod 6, pulling the third filter plate 2. The filter plates 2 are pulled open one by one. Compared with manual opening, this saves effort and improves efficiency. At the same time, the absence of other driving components (motor, chain, or robotic arm, etc.) reduces maintenance and operating costs. The filter cake falls off naturally due to the loss of support and falls into the collection box 105 below. After use, the filter cloth 3 can be backwashed using a high-pressure water spray system to remove blockages, restore filtration performance, and prepare for the next cycle. The filter plates 2 are then clamped again to enter the next working cycle.

[0021] A spring 7 is fitted onto the pull rod 6. The spring 7 abuts against two adjacent sliding seats respectively. When the filter plates 2 are pulled apart one by one, the spring 7 can push the two sliding seats away from each other under the action of elasticity, which facilitates the discharge of filter cake and avoids the phenomenon that the filter plates 2 are not separated.

[0022] Here, three through holes 401 are provided, namely the first hole, the second hole, and the third hole. The pull rods 6 are alternately located in the first, second, and third holes according to the arrangement of the filter plates 2. That is, the pull rod 6 is installed in the first hole between the first and second filter plates 2, in the second hole between the second and third filter plates 2, in the third hole between the third and fourth filter plates 2, and in the first hole between the fourth and fifth filter plates 2, and so on. This staggered installation of the pull rods 6 effectively increases the effective length of the pull rods 6, which is the opening distance between adjacent filter plates 2, ensuring reliable filter cake discharge. The length of the pull rod 6 is less than the distance between the sliding seats on the first and fourth filter plates 2, ensuring a tight fit between the filter plates 2 and preventing interference that could affect normal use. In addition, a limit plate is fixedly connected to one end of the pull rod 6, and a nut is threaded to the other end of the pull rod 6, allowing the pull rod 6 to be flexibly installed and removed, thus improving its usability.

[0023] The sliding seat includes a fixed plate 4, one end of which is fixedly connected to the filter plate 2. A through hole 401 is formed on the fixed plate 4, and a first sliding groove 402 is formed on the fixed plate 4. A rotating plate 5 is connected to the bottom of the fixed plate 4. One end of the rotating plate 5 is rotatably connected to the fixed plate 4, and the other end of the rotating plate 5 is detachably connected to the fixed plate 4 by bolts. A second sliding groove 501 corresponding to the first sliding groove 402 is formed on the rotating plate 5. The sliding rod passes through the limiting hole formed by the first sliding groove 402 and the second sliding groove 501. By designing the sliding seat as a fixed plate 4 and a rotating plate 5, it is convenient to assemble and disassemble the filter plate 2, and the maintenance effect is improved.

[0024] Components not described in detail in this article are existing technologies.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A solid-liquid separation treatment device for sludge, comprising a frame (1), wherein a pressure plate (101) is slidably connected to one end of the frame (1), and a thrust plate (102) is fixedly connected to the other end of the frame (1), characterized in that, It also includes a filter plate (2) group composed of multiple filter plates (2) arranged in sequence, and the filter plate (2) group is installed between the pressure plate (101) and the thrust plate (102). Among them, a sliding rod is fixedly connected to the frame (1), and a filter chamber is formed between two adjacent filter plates (2). Both ends of the filter plate (2) are fixedly connected to sliding seats. The sliding seats are slidably connected to the sliding rod, and two adjacent filter plates (2) are connected by a pull rod (6). Multiple through holes (401) are opened on the sliding seat. The pull rod (6) passes through the through holes (401) of two adjacent filter plates (2). When the pressing plate (101) returns, the two adjacent filter plates (2) are unfolded by the pull rod (6).

2. The solid-liquid separation treatment equipment for sludge according to claim 1, characterized in that, A spring (7) is fitted on the pull rod (6), and the spring (7) abuts against two adjacent sliding seats respectively.

3. The solid-liquid separation treatment equipment for sludge according to claim 1, characterized in that, The through hole (401) has three holes, namely the first hole, the second hole and the third hole. The pull rod (6) is alternately located in the first hole, the second hole and the third hole according to the arrangement order of the filter plate (2).

4. The solid-liquid separation treatment equipment for sludge according to claim 1, characterized in that, The sliding seat includes a fixed plate (4), one end of which is fixedly connected to the filter plate (2). The through hole (401) is opened on the fixed plate (4), and a first sliding groove (402) is opened on the fixed plate (4). A rotating plate (5) is connected to the bottom of the fixed plate (4). One end of the rotating plate (5) is rotatably connected to the fixed plate (4), and the other end of the rotating plate (5) is detachably connected to the fixed plate (4) by bolts. A second sliding groove (501) corresponding to the first sliding groove (402) is opened on the rotating plate (5). The sliding rod passes through the limiting hole formed by the first sliding groove (402) and the second sliding groove (501).

5. A solid-liquid separation treatment device for sludge according to claim 1, characterized in that, The filter plate (2) has a filter cavity (201) inside, and filter cloth (3) is fixedly connected to both ends of the filter cavity (201). The filter plate (2) has a drain hole (203) that communicates with the filter cavity (201).

6. A solid-liquid separation treatment device for sludge according to claim 1, characterized in that, A pipe (202) is fixedly connected to the filter plate (2), and both ends of the pipe (202) are respectively connected to the filter chamber. A feed pipe (103) for feeding material into the filter chamber is fixedly connected to the thrust plate (102).

7. A solid-liquid separation treatment device for sludge according to claim 1, characterized in that, One end of the pull rod (6) is fixedly connected to a limiting plate, and the other end of the pull rod (6) is threaded with a nut.

8. A solid-liquid separation treatment device for sludge according to claim 1, characterized in that, Both ends of the filter plate (2) are fixedly connected with sealing gaskets (8).

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