Parallel plug-in plate type hydraulic solid-liquid separation device and solid-liquid separation method

Abstract

The application provides a parallel plug-in plate type hydraulic solid-liquid separation device and a solid-liquid separation method, and belongs to the technical field of solid-liquid separation. The application solves the problem of unsatisfactory separation effect of the existing solid-liquid separation equipment. The device comprises a pushing mechanism and a pressure bearing mechanism. The pushing mechanism comprises a plurality of pushing plates. The pressure bearing mechanism comprises a plurality of pressure bearing plates. The plurality of pressure bearing plates are arranged at intervals in a main frame. The plurality of pushing plates are correspondingly inserted between the plurality of pressure bearing plates. The pushing mechanism is connected with a pushing plate hydraulic cylinder. The pressure bearing mechanism is connected with a pressure bearing plate hydraulic cylinder. The top and bottom of the pushing mechanism are respectively provided with a top plate and a bottom plate. The bottom plate is provided with a main flow channel. A liquid conveying groove penetrates the pressure bearing plate in the vertical direction. Liquid seepage holes are arranged on the two sides of the liquid conveying groove. The lower part of the liquid conveying groove is communicated with the main flow channel. The device is mainly used for realizing solid-liquid separation.

Description

Technical Field

[0001] This invention belongs to the field of solid-liquid separation technology, and in particular relates to a parallel insert type hydraulic solid-liquid separation device and solid-liquid separation method. Background Technology

[0002] A solid-liquid separator is a device used to separate solid and liquid materials. Examples include oil presses for pressing animal and vegetable oils, edible oil decolorization and filtration equipment, oil and fat separation equipment, vegetable oil and vegetable wax separation equipment, and sludge or waste dewatering equipment. However, existing hydraulic solid-liquid separators often suffer from problems. The horizontal pusher plates between materials can easily jam against the chamber. Furthermore, the excessively long liquid outflow path in existing equipment can lead to unsatisfactory solid-liquid separation results. Some devices require repeated disassembly or replacement of the filter cloth during solid-liquid separation, which is time-consuming, labor-intensive, and negatively impacts separation efficiency.

[0003] Taking oil presses as an example, existing parallel hydraulic oil presses all have a partition structure. The hydraulic system pushes the partitions and materials forward to squeeze them. This type of press has high requirements for the parallelism of the partitions and the uniformity of the materials. During the process of the hydraulic press pushing the partitions and materials forward, if the uneven loading of materials leads to uneven force, the partitions will lose balance and shift, resulting in the partitions becoming misaligned and stuck. When stuck, manual readjustment is required, which is time-consuming, labor-intensive, and affects work efficiency. Moreover, the pull ropes connecting the partitions are easily damaged when the partitions are pulled apart. Summary of the Invention

[0004] In view of this, the present invention aims to provide a parallel insert type hydraulic solid-liquid separation device to solve the problem of unsatisfactory separation effect of existing solid-liquid separation equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a parallel insert-plate type hydraulic solid-liquid separation device, comprising a pushing mechanism and a bearing mechanism. The pushing mechanism includes multiple pushing plates, and the bearing mechanism includes multiple bearing plates. The multiple bearing plates are spaced apart within a main frame, and the multiple pushing plates are correspondingly inserted between the multiple bearing plates. The pushing mechanism is connected to a hydraulic cylinder of the pushing plate, and the bearing mechanism is connected to a hydraulic cylinder of the bearing plate. A top plate and a bottom plate are respectively provided at the top and bottom of the pushing mechanism. A main flow channel is opened on the bottom plate, and a liquid delivery tank runs vertically through the bearing plate. Leakage holes are connected to both sides of the liquid delivery tank, and the lower part of the liquid delivery tank is connected to the main flow channel.

[0006] Furthermore, the top plate is connected to the top plate hydraulic cylinder.

[0007] Furthermore, the base plate is connected to the base plate hydraulic cylinder.

[0008] Furthermore, the number of top plate hydraulic cylinders is two, and the two top plate hydraulic cylinders are symmetrically arranged on both sides of the top plate in the horizontal direction.

[0009] Furthermore, the base plate hydraulic cylinders are of two types, and the two base plate hydraulic cylinders are symmetrically arranged on both sides of the base plate in the horizontal direction.

[0010] Furthermore, the number of pressure plate hydraulic cylinders is four, and the four pressure plate hydraulic cylinders are respectively set at the four corners of the pressure-bearing mechanism.

[0011] Furthermore, the plurality of push plates are connected by push plate connectors, and the plurality of bearing plates are connected by bearing plate connectors.

[0012] Furthermore, both the top plate and the bottom plate are equipped with rolling auxiliary wheels.

[0013] Furthermore, the connecting ends of the push plate and the bearing plate are boss structures.

[0014] The present invention also provides a solid-liquid separation method for a parallel slide-type hydraulic solid-liquid separation device, which includes the following steps:

[0015] Step 1: First, open the top plate and place the material to be separated into solid and liquid in the gap between multiple pressure plates. The hydraulic cylinder of the pressure plate drives the multiple pressure plates to move forward, and the pressure plates squeeze the material placed between the pressure plates to achieve solid-liquid separation.

[0016] Step 2: During the process of the pressure plate squeezing the material, the separated liquid enters the infusion tank through the seepage holes on the pressure plate, flows down the infusion tank into the main channel, and then flows out for collection.

[0017] Step 3: After solid-liquid separation is completed, the hydraulic cylinder of the pressure plate moves the pressure plate backward, and the push plate holds the separated solid and keeps it still. After the pressure plate is completely withdrawn, the bottom plate is opened, and then the hydraulic cylinder of the push plate moves the push plate backward. The separated solid falls from the bottom, completing the unloading.

[0018] Compared with existing technologies, the advantages of this invention are as follows: This invention adopts a plate-type solid-liquid separation structure, in which the material to be separated is placed between multiple pressure plates, and the push plate squeezes the material to achieve solid-liquid separation. In this mode, the push plate moves along the length direction, rather than the traditional lateral movement, so the push plate will not jam, reducing the assembly requirements of the push plate and the material. Furthermore, this form significantly reduces the outflow path of the liquid in the material, allowing it to flow out through the seepage holes and delivery channels on both sides of the pressure plates, resulting in a low liquid residue rate and greatly improving the solid-liquid separation rate. After solid-liquid separation is completed, the pressure plates and push plates are sequentially withdrawn, and the separated solid material falls off under gravity, eliminating the need for manual unloading, making it convenient and quick.

[0019] Existing hydraulic presses use steel plates, steel rings, or cloth as partitions, requiring manual feeding and thus hindering industrial production. The liquid overflow stroke is too long, resulting in excessive residual liquid in the material. The process of squeezing, stopping, and slowly waiting for the liquid to overflow is time-consuming and inefficient. This invention, however, allows for mechanical feeding from the top of the solid-liquid separation device and discharge from the end, making it suitable for large-scale industrial production. The lateral liquid displacement stroke is extremely short, only one-tenth that of existing presses. It eliminates the need for squeezing, stopping, and slowly waiting for the liquid to overflow; it can directly squeeze until all liquid is discharged, saving time and increasing efficiency. Furthermore, the short liquid displacement stroke prevents overflow from being trapped within the material, resulting in less residual liquid, better squeezing effect, and lower costs.

[0020] Existing filters, whether using plate and frame, diaphragm, or vibrating steel mesh, all suffer from slow filtration speeds, long drying times for liquids in the material, high steam consumption, and time-consuming and labor-intensive filter media disassembly. This invention employs a compression filtration method, which is fast. The liquid in the filtered material is directly squeezed out without the need for a drying process. Furthermore, the filter media can be disassembled by simply pushing the material out with a press, eliminating the need for manual disassembly. This saves time and gas, reduces production costs, and minimizes residual liquid in the material.

[0021] For sludge dewatering, the current methods of piling, drying, and sun-drying can be abandoned. The plate-type solid-liquid separation device made in this invention can be used to directly press dry the sludge. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a top view schematic diagram of a parallel insert type hydraulic solid-liquid separation device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of a parallel insert type hydraulic solid-liquid separation device according to the present invention;

[0025] Figure 3 This is a side view of the parallel insert type hydraulic solid-liquid separation device according to the present invention.

[0026] Figure 4 This is a schematic cross-sectional view of the solid material after solid-liquid separation as described in this invention. Figure 1 ;

[0027] Figure 5 This is a schematic cross-sectional view of the solid material after solid-liquid separation as described in this invention. Figure 2 .

[0028] 1-Push plate, 2-Pressure plate, 3-Push plate hydraulic cylinder, 4-Pressure plate hydraulic cylinder, 5-Top plate hydraulic cylinder, 6-Top plate, 7-Bottom plate hydraulic cylinder, 8-Bottom plate, 9-Main frame. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0030] Example 1: See Figure 1-5 This embodiment describes a parallel insert-plate type hydraulic solid-liquid separation device, which includes a pushing mechanism and a bearing mechanism. The pushing mechanism includes multiple pushing plates 1, and the bearing mechanism includes multiple bearing plates 2. The multiple bearing plates 2 are spaced apart within a main frame 9. The multiple pushing plates 1 are correspondingly inserted between the multiple bearing plates 2. The pushing mechanism is connected to a pushing plate hydraulic cylinder 3, and the bearing mechanism is connected to a bearing plate hydraulic cylinder 4. The top and bottom of the pushing mechanism are respectively provided with a top plate 6 and a bottom plate 8. A main flow channel is opened on the bottom plate 8. A liquid delivery tank runs vertically through the bearing plates 2, and seepage holes are connected to both sides of the liquid delivery tank. The lower part of the liquid delivery tank is connected to the main flow channel.

[0031] In this embodiment, the top plate 6 is first opened, and the material to be separated into solid and liquid is placed in the gap between multiple pressure plates 2. The hydraulic cylinder 3 drives multiple pressure plates 1 forward, which squeeze the material between the pressure plates 2 to achieve solid-liquid separation. Because the movement between the pressure plates 1 and 2 is along the length of the plates, the pressure plates 1 will not jam, ensuring stable operation of the solid-liquid separation device. During the squeezing process, the separated liquid enters the delivery tank through the seepage holes on the pressure plates 2, flows downwards into the main channel, and then flows out for collection. During solid-liquid separation, the separated liquid can flow out from the pressure plates 2 on both sides for collection, resulting in a short outflow path and a high liquid yield. After solid-liquid separation is completed, the hydraulic cylinder 4 of the pressure plate drives the pressure plate 2 to move backward, and the push plate 1 holds the separated solid and keeps it stationary. After the pressure plate 2 is completely withdrawn, the bottom plate 8 is opened. Then the hydraulic cylinder 3 of the push plate drives the push plate 1 to move backward, and the separated solid falls from the bottom to complete the unloading. The operation is simple and convenient.

[0032] In this embodiment, the top plate 6 is connected to the top plate hydraulic cylinder 5, and the bottom plate 8 is connected to the bottom plate hydraulic cylinder 7. The top plate 6 and bottom plate 8 are moved by the top plate hydraulic cylinder 5 and the bottom plate hydraulic cylinder 7 to achieve opening and closing, which are used for the loading and unloading processes, respectively. Due to the large weight of the top plate 6 and bottom plate 8, there are two top plate hydraulic cylinders 5 and two bottom plate hydraulic cylinders 7. The two top plate hydraulic cylinders 5 are symmetrically arranged on both sides of the top plate 6 in the horizontal direction, and the two bottom plate hydraulic cylinders 7 are symmetrically arranged on both sides of the bottom plate 8 in the horizontal direction. During operation, the two hydraulic cylinders drive the top plate 6 and bottom plate 8 to move simultaneously. Rolling auxiliary wheels are provided on both the top plate 6 and bottom plate 8 to reduce the resistance when the top plate 6 and bottom plate 8 move, ensuring stable movement of the top plate 6 and bottom plate 8.

[0033] In this embodiment, four hydraulic cylinders 4 for the pressure plates are respectively located at the four corners of the pressure-bearing mechanism. The four hydraulic cylinders 4 work simultaneously to drive multiple pressure plates 2 to move stably. The multiple push plates 1 are connected by push plate connectors to ensure synchronized movement of the entire assembly. The multiple pressure plates 2 are also connected by pressure plate connectors to ensure synchronized movement of the entire assembly. The push plate hydraulic cylinder 3 is connected to the center of the pushing mechanism to ensure stable force distribution. The connecting ends of the push plates 1 and pressure plates 2 are boss structures to ensure the stability of the insertion between the push plates 1 and pressure plates 2, achieving thorough pressing of the material.

[0034] This embodiment is a solid-liquid separation method based on the above-mentioned parallel slide-type hydraulic solid-liquid separation device, which includes the following steps:

[0035] Step 1: First, open the top plate 6 and place the material to be separated into solid and liquid in the gap between multiple pressure plates 2. The hydraulic cylinder 3 of the push plate drives multiple push plates 1 to move forward, and the push plates 1 squeeze the material placed between the pressure plates 2 to achieve solid-liquid separation.

[0036] Step 2: During the process of the pressure plate 1 squeezing the material, the separated liquid enters the infusion tank through the seepage hole on the pressure plate 2, flows down the infusion tank into the main channel, and then flows out for collection.

[0037] Step 3: After solid-liquid separation is completed, the hydraulic cylinder 4 of the pressure plate drives the pressure plate 2 to move backward, and the push plate 1 holds the separated solid and keeps it still. After the pressure plate 2 is completely withdrawn, the bottom plate 8 is opened. Then the hydraulic cylinder 3 of the push plate drives the push plate 1 to move backward, and the separated solid falls from the bottom to complete the unloading.

[0038] Example 2: This example uses an oil press as an example. In the field of animal and vegetable oil pressing, the equipment and processes for pressing animal and vegetable oils can be considered to have reached the second generation. The first generation used an extrusion method, evolving from levers to hydraulic pressure. This type of press and its process involves placing the oilseeds on a pallet, with the edges of the pallet surrounded by steel rings, stacking them one by one, and then gradually applying pressure to squeeze the oil out little by little. The drawback of this equipment and process is that the oil's outward permeation journey is too long. If the pressure is too low, no oil will be produced; if the pressure is too high, the oil in the center of the material will be sealed inside before it can permeate to the outside, resulting in a low oil yield. Furthermore, it requires manual operation, is not suitable for industrialized production, and has high costs. The second generation uses a screw press. This type of press and its process involves rotating a screw rod in the pressing chamber, allowing the oilseeds to move forward along the screw rod. As the oilseeds move forward, the gap narrows, creating pressure between the screw rod and the pressing chamber, thus squeezing the oil out of the oilseeds. The drawback of this equipment and process is that if the gap between the pressing chamber and the screw is reduced, the pressure, heat, and oil yield will be high, but the oilseeds will also easily stick to the screw, clogging the pressing chamber and causing a blockage. Once blocked, disassembly is required, which is very time-consuming. If the gap between the pressing chamber and the screw is increased, the pressure and heat will be low, and the blockage will not occur, but the oil yield will be too low. There is no better solution between the two. Therefore, the first and second generation of vegetable and animal oil pressing equipment and processes are not ideal and have too many drawbacks.

[0039] This embodiment employs a parallel insert-plate type hydraulic oil press, which includes a pushing mechanism and a bearing mechanism. The pushing mechanism includes multiple pushing plates 1, and the bearing mechanism includes multiple bearing plates 2. The multiple bearing plates 2 are spaced apart within the main frame 9 of the oil press. The multiple pushing plates 1 are correspondingly inserted between the multiple bearing plates 2. The pushing mechanism is connected to the pushing plate hydraulic cylinder 3, and the bearing mechanism is connected to the bearing plate hydraulic cylinder 4. The top and bottom of the pushing mechanism are respectively provided with a top plate 6 and a bottom plate 8. A main oil passage is opened on the bottom plate 8. An oil conveying groove runs vertically through the bearing plates 2, and oil seepage holes are connected to both sides of the oil conveying groove. The lower part of the oil conveying groove is connected to the main oil passage.

[0040] In this embodiment, the top plate 6 is first opened, and the oilseeds are placed in the gaps between multiple pressure plates 2. The hydraulic cylinder 3 of the pressure plate drives the pressure plate 1 forward, which squeezes the oilseeds placed between the pressure plates 2 to extract oil. Since the movement between the pressure plate 1 and the pressure plates 2 is along the length of the plates, the pressure plate 1 will not jam, ensuring the stable operation of the oil press. During the pressing process, the extracted oil enters the oil conveying trough through the oil seepage holes on the pressure plates 2, flows downward along the trough into the main oil channel, and then flows out for collection. During the oil extraction process, the extracted oil can flow out from the pressure plates 2 on both sides for collection, resulting in a short oil path and a high oil yield. After the oil extraction is completed, the hydraulic cylinder 4 of the pressure plate drives the pressure plate 2 to move backward, and the pressure plate 1 holds the cake in place. After the pressure plate 2 is completely withdrawn, the bottom plate 8 is opened, and then the hydraulic cylinder 3 of the pressure plate drives the pressure plate 1 to move backward, and the pressed cake falls from the bottom, completing the unloading. The operation is simple and convenient.

[0041] In this embodiment, the top plate 6 is connected to the top plate hydraulic cylinder 5, and the bottom plate 8 is connected to the bottom plate hydraulic cylinder 7. The top plate 6 and bottom plate 8 are moved by the top plate hydraulic cylinder 5 and the bottom plate hydraulic cylinder 7 to achieve opening and closing, which are used for the loading and unloading processes, respectively. Due to the large weight of the top plate 6 and bottom plate 8, there are two top plate hydraulic cylinders 5 and two bottom plate hydraulic cylinders 7. The two top plate hydraulic cylinders 5 are symmetrically arranged on both sides of the top plate 6 in the horizontal direction, and the two bottom plate hydraulic cylinders 7 are symmetrically arranged on both sides of the bottom plate 8 in the horizontal direction. During operation, the two hydraulic cylinders drive the top plate 6 and bottom plate 8 to move simultaneously. Rolling auxiliary wheels are provided on both the top plate 6 and bottom plate 8 to reduce the resistance when the top plate 6 and bottom plate 8 move, ensuring stable movement of the top plate 6 and bottom plate 8.

[0042] In this embodiment, four hydraulic cylinders 4 for the pressure plates are respectively located at the four corners of the pressure-bearing mechanism. The four hydraulic cylinders 4 work simultaneously to drive multiple pressure plates 2 to move stably. The multiple push plates 1 are connected by push plate connectors to ensure that the multiple push plates 1 can move synchronously as a whole. The multiple pressure plates 2 are also connected by pressure plate connectors to ensure that the multiple pressure plates 2 can move synchronously as a whole. The push plate hydraulic cylinder 3 is connected to the center of the pushing mechanism to ensure stable force distribution. The connecting ends of the push plates 1 and pressure plates 2 are boss structures to ensure the stability of the insertion between the push plates 1 and pressure plates 2, achieving full pressing of the oil.

[0043] Example 3: This example uses edible oil decolorization filtration, oil and fat separation, and vegetable oil and vegetable wax separation as examples. Currently, these fields mainly use the following types of machines and processes: First, plate and frame filters, filter cloth filters, or diaphragm filters. These filters have slow filtration speeds, poor effects, are difficult to disassemble, require excessive time to dry residual oil in the filter media, consume large amounts of air, and have low efficiency. Second, steel mesh vibrating filters. These filters require too long to achieve a filtration effect through circulation, require a large amount of steam and a long time to dry residual oil in the filter media, and disassembling the filter plates is time-consuming, labor-intensive, and expensive. These types of machines and processes are not ideal and have too many defects.

[0044] The implementation method of this embodiment is the same as that of embodiment 1. It adopts the extrusion filtration method, which is fast. The liquid in the filtered material is directly squeezed out without the need for a drying process. At the same time, when disassembling the filter material, the material can be pushed out directly with a press without manual disassembly, which saves time and air, reduces production costs, and leaves less residual liquid in the material.

[0045] Example 4: This example uses the separation of stearic acid and oleic acid as an example. This field typically uses hydraulic pressure with filter cloth, but this process is labor-intensive and not suitable for industrial production. The implementation method in this example is the same as in Example 1, using a plate-type solid-liquid separation device to directly press dry the liquid to achieve solid-liquid separation.

[0046] Example 5: This example takes sludge and waste dewatering as an example. This field primarily uses either sun-drying or drying, neither of which is ideal. Sun-drying is time-consuming and land-intensive, requiring a large area and having low efficiency; drying is too energy-intensive. The implementation method in this example is the same as in Example 1. For sludge dewatering, the current sun-drying and drying methods can be abandoned, and the insert-plate type solid-liquid separation device manufactured according to this invention can be used to directly press dry the sludge.

[0047] This invention utilizes the principle of lateral current radiation through the pushing and inserting action between a pin and a socket. It designs pressing, filtering, and solid-liquid separation machines in the form of a pin and socket. A liquid displacement path is set in the partition of the socket section of the pressing, filtering, and solid-liquid separation machine. When the pusher plate of the pressing, filtering, and solid-liquid separation machine in the pin section pushes the material forward in the partition of the socket section, the liquid in the material is displaced laterally, like the current flowing between the pin and the socket, and instantly enters the oil and water passages on both sides of the partition. The specific advantages of this design for pressing, filtering, and solid-liquid separation machines are as follows:

[0048] Compared to horizontal presses with horizontally arranged partitions, this solves the problem of opening the partitions after pressing. In horizontal presses, it is difficult to find materials that are both resistant to compression and tension when opening the partitions like an accordion after pressing. Conventional materials such as iron chains, steel wire ropes, woolen ropes, and leather ropes will break after only a few uses.

[0049] The machine is designed with a socket and a pin, which are used for pressing, filtering, and solid-liquid separation. When the push plate of the pin part is pushed forward to squeeze, the liquid in the material can quickly enter the partition passage of the socket part on both sides, reducing the travel and resistance of the liquid displacement in the material, so as to reduce the squeezing time and the liquid residue in the material after squeezing.

[0050] The extrusion plate is set horizontally like a socket and a plug. The partition and steel ring of the current press are removed, eliminating the trouble of manually feeding the material plate by plate. The material can be fed from the top of the press and discharged horizontally from the end. In this way, solid-liquid separation devices can be connected in series to form industrial production.

[0051] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A parallel slide plate type hydraulic solid-liquid separation device, characterized in that: It includes a pushing mechanism and a bearing mechanism. The pushing mechanism includes multiple pushing plates (1), and the bearing mechanism includes multiple bearing plates (2). The multiple bearing plates (2) are spaced apart within the main frame (9). The multiple pushing plates (1) are correspondingly inserted between the multiple bearing plates (2). The pushing mechanism is connected to the hydraulic cylinder (3) of the pushing plate, and the bearing mechanism is connected to the hydraulic cylinder (4) of the bearing plate. The top and bottom of the pushing mechanism are respectively provided with a top plate (6) and a bottom plate (8). The bottom plate (8) has a main opening. The flow channel has a liquid infusion tank running vertically through the pressure plate (2), and seepage holes are connected to both sides of the liquid infusion tank. The lower part of the liquid infusion tank is connected to the main flow channel. The top plate (6) is connected to the top plate hydraulic cylinder (5), and the bottom plate (8) is connected to the bottom plate hydraulic cylinder (7). There are two top plate hydraulic cylinders (5), which are symmetrically arranged on both sides of the top plate (6) in the horizontal direction. There are two bottom plate hydraulic cylinders (7), which are symmetrically arranged on both sides of the bottom plate (8) in the horizontal direction. The plurality of push plates (1) are connected by push plate connectors, and the plurality of bearing plates (2) are connected by bearing plate connectors; the connecting ends of the push plates (1) and bearing plates (2) are boss structures.

2. The parallel insert type hydraulic solid-liquid separation device according to claim 1, characterized in that: The number of pressure plate hydraulic cylinders (4) is four, and the four pressure plate hydraulic cylinders (4) are respectively set at the four corners of the pressure bearing mechanism.

3. The parallel insert type hydraulic solid-liquid separation device according to claim 1, characterized in that: Both the top plate (6) and the bottom plate (8) are equipped with rolling auxiliary wheels.

4. A solid-liquid separation method based on the parallel insert type hydraulic solid-liquid separation device according to claim 1, characterized in that: It includes the following steps: Step 1: First, open the top plate (6) and place the material to be separated into solid and liquid in the gap between multiple pressure plates (2). Drive multiple pressure plates (1) forward through the hydraulic cylinder (3) of the pressure plate, and the pressure plates (1) squeeze the material placed between the pressure plates (2) to separate solid and liquid. Step 2: During the process of the pressure plate (1) squeezing the material, the separated liquid enters the infusion tank through the seepage hole on the pressure plate (2), flows down the infusion tank into the main channel, and then flows out for collection. Step 3: After solid-liquid separation is completed, the pressure plate hydraulic cylinder (4) drives the pressure plate (2) to move backward, and the push plate (1) holds the separated solid and keeps it still. After the pressure plate (2) is completely withdrawn, the bottom plate (8) is opened. Then the push plate hydraulic cylinder (3) drives the push plate (1) to move backward, and the separated solid falls from the bottom to complete the unloading.

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