Stranding and pressing type mechanical high-dryness solid-liquid separator
Through the design of a twisted mechanical high-dry solid-liquid separator, components such as filtrate discharge chamber and flexible filter tube bundle are used to solve the problem that low-solid content materials in the existing technology are difficult to achieve high solid-liquid content, and efficient and automated solid-liquid separation is achieved without the need for lime.
Patent Information
- Application Number
- CN202510076478.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-03-14
AI Technical Summary
When existing solid-liquid separation and dewatering machines deal with low solid-containing materials, it is difficult to achieve high solid-containing ratios (such as 40% or above), and lime and other chemicals are often added, which increases pollutants and operating costs.
The twisted mechanical high-dry solid-liquid separator is adopted to achieve efficient dehydration of low-solid-containing materials through the combination of the filtrate discharge chamber, flexible filter tube bundle, movable cylinder and hydraulic system, and achieve a solid-containing ratio of 40% or more without adding lime.
It is realized that when adding conventional flocculants, the low-solid content material is efficiently dehydrated to a solid content of more than 40%, which improves the degree of automation and reduces manual intervention and operating costs.
Smart Images
Figure CN119607651A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of solid-liquid separation of sludge, medicinal residue, coal gasification fine residue, coal slime, tailings and the like, and specifically relates to a screw-type mechanical high-dry solid-liquid separator. Background Art
[0002] There are a lot of demands for solid-liquid separation process operations in the industrial field. For example, municipal sludge needs to be dehydrated and further reduced before it can be used in the back end. Drug residue, coal gasification fine slag, coal slime, tailings, etc. also need to remove a lot of water from the state of low solid content (solid content 5%) to achieve the effect of reduction (solid content 20% and above) before use. From the perspective of energy consumption, mechanical dehydration of sludge is the most low-carbon process for reduction. Common solid-liquid separation dehydrators include centrifuges, belt dehydrators, plate and frame filter presses, screw stackers, etc. Among them, centrifuges, belt dehydrators, and screw stackers can only dehydrate low-solid materials to a solid content of about 20%, while plate and frame filter presses need to add a lot of lime and other agents to dehydrate low-solid materials to a solid content of 40%. However, after adding lime and agents, the actual solid pollutants increase, which brings certain difficulties to the further use of downstream. In addition, plate and frame filter presses require manual intervention during operation, which increases the labor load and operating costs. Different from the above solid waste separation mechanical dehydration equipment, the wringer type high-drying dehydrator of the present invention can dehydrate low-solid content materials to a solid content of 40% without adding lime when adding conventional dosage and type of flocculants. The equipment has a high degree of automation and no manual intervention is required during the process. Summary of the invention
[0003] The purpose of the present invention is to provide a screw-type mechanical high-dry solid-liquid separator to dehydrate low-solid-content materials to a solid content of 40% without adding lime under the condition of adding conventional dosage and type of flocculants;
[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a screw-type mechanical high-dry solid-liquid separator, characterized in that it includes: a filtrate discharge chamber, a flexible filter tube bundle, a movable cylinder, a cylinder limit rod, a cylinder moving hydraulic rod, a fixed end plate, a hydraulic system, a compression cylinder rotating lever, a hydraulic cylinder rotating sleeve, a passive sprocket, a chain, a driving sprocket, a driving mechanism, a compression hydraulic rod and a compression plate;
[0005] One side of the filtrate discharge chamber is fixedly connected to the cylinder limiting rod, and one end of the cylinder limiting rod is fixedly connected to the fixed end plate to form an integral fixed frame;
[0006] The two ends of the movable cylinder are slidably connected to the cylinder limit rod through flanges, and one end of the movable cylinder is also fixedly connected to the cylinder moving hydraulic rod, and the cylinder moving hydraulic rod is fixedly arranged on the fixed end plate, the compression plate is arranged on one side of the movable cylinder, and together with the filtrate discharge cavity and the movable cylinder, forms a closed cavity, and the flexible filter tube bundle is arranged on the compression plate and communicated with the filtrate discharge cavity;
[0007] The compression cylinder rotating lever and one end of the compression hydraulic rod are fixedly connected to the compression plate, the compression cylinder rotating lever is connected to the compression hydraulic rod through the hydraulic cylinder rotating sleeve, the hydraulic cylinder rotating sleeve is provided with a passive sprocket, the passive sprocket is connected to the active sprocket through a chain, and the active sprocket is fixed on the output shaft of the driving mechanism;
[0008] The hydraulic system is connected to the cylinder moving hydraulic rod and the compression hydraulic rod respectively through a conduit.
[0009] Furthermore, the flexible filter tube bundle comprises: a filter element fixing sleeve, a filter bag fixing nut, a filter bag and a flexible filter element;
[0010] The filter element fixing sleeve is arranged at two ends of the flexible filter element, the filter bag is sleeved on the outside of the flexible filter element, and the two ends of the filter bag are fixed on the filter element fixing sleeve through filter bag fixing nuts.
[0011] Furthermore, a plurality of evenly arranged drainage grooves are provided on the inner side of the flexible filter element, the bottom surface of the drainage groove is a smooth arc, and the notch width of the drainage groove is smaller than the width of the bottom surface of the drainage groove.
[0012] Furthermore, a plurality of filtrate outflow holes are provided on the inner side of the filtrate discharge cavity, and each filtrate outflow hole is connected to a flexible filter tube bundle.
[0013] Furthermore, a feed inlet is provided in the middle of the filtrate discharge chamber, the feed inlet is communicated with the closed cavity, and a liquid outlet is provided at the bottom end of the filtrate discharge chamber.
[0014] Furthermore, the other end of the compression cylinder rotating lever extends into the hole of the steel plate extending outside the hydraulic cylinder rotating sleeve, the hydraulic cylinder rotating sleeve is sleeved on the telescopic rod of the compression hydraulic rod, and the hydraulic cylinder rotating sleeve and the telescopic rod of the compression hydraulic rod extend through the inner hole of the fixed end plate to the outside of the integral fixed frame.
[0015] Furthermore, the compression plate is provided with a plurality of mounting holes for mounting a flexible filter tube bundle.
[0016] Further, the method comprises the following solid-liquid separation steps:
[0017] Step 1: Low-solid-content materials are continuously fed into the closed cavity through the feed port. The low-solid-content materials in the closed cavity will squeeze each other, and a portion of the liquid will be squeezed out to obtain filtrate. The filtrate flows into the filtrate outflow hole through the flexible filter tube bundle, and is collected inside the filtrate discharge cavity, and finally discharged from the device through the liquid outlet at the bottom of the filtrate discharge cavity;
[0018] Step 2: When the low-solid material continues to be fed into the closed cavity, and the filtrate cannot be squeezed and separated in the closed cavity, stop feeding, start the compression hydraulic rod compression plate to squeeze the material in the cavity, further separate the liquid in the low-solid material, and let the filtrate flow into the filtrate discharge cavity through the flexible filter tube bundle, and then discharge the equipment. When the filtrate discharge amount is small, the drive mechanism starts to rotate and finally drives the compression plate and the internal flexible filter tube bundle to rotate, and repeatedly switches the rotation direction to maximize the filtrate squeeze. When only a very small amount of filtrate is finally discharged, the drive mechanism stops working;
[0019] Step 3: When there is basically no filtrate discharged, start the compression hydraulic rod to drive the compression plate to contract, and at the same time start the driving mechanism to drive the hydraulic cylinder rotating sleeve to rotate, and then drive the compression cylinder rotating lever through the hydraulic cylinder rotating sleeve to rotate the compression plate and the internal flexible filter tube bundle to loosen the material in the closed cavity;
[0020] Step 4: After the loosening of the material in the closed cavity is completed, the compression hydraulic rod is started to extend, driving the compression plate to concentrate the material in the closed cavity, and then the movable cylinder is driven to slide by the moving hydraulic rod to separate from the filtrate discharge cavity, so that the material is discharged from the bottom of the equipment.
[0021] Beneficial effects: The present invention first inputs low-solid-content materials into the filtrate discharge chamber, the movable cylinder and the compression plate together form a closed chamber, performs preliminary filtrate separation, and then starts the compression hydraulic rod compression plate to squeeze the material in the chamber, then starts the driving mechanism to drive the hydraulic cylinder rotating sleeve to rotate, and then drives the compression cylinder rotating lever through the hydraulic cylinder rotating sleeve, and finally drives the compression plate and the internal flexible filter tube bundle to rotate, and repeatedly switches the rotation direction to maximize the filtrate extrusion, so as to achieve solid-liquid separation of low-solid-content materials, so that the solid content of the obtained dry material reaches more than 40%, and the process does not add any lime, and can be completed by adding conventional dosages and types of flocculants. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the equipment structure in the feed filling process of the present invention;
[0023] Figure 2 This is a schematic diagram of the equipment structure in the compression and dehydration process of the present invention;
[0024] Figure 3 This is a schematic diagram of the equipment structure in the pressure relief process of the present invention;
[0025] Figure 4 This is a schematic diagram of the equipment structure in the unloading process of the present invention;
[0026] Figure 5 It is a schematic diagram of the structure of the flexible filter tube bundle of the present invention;
[0027] Figure 6 It is a cross-sectional view of the flexible filter element of the present invention.
[0028] In the figure: 1. filtrate discharge chamber, 2. flexible filter tube bundle, 2-1. filter element fixing sleeve, 2-2. filter bag fixing nut, 2-3. filter bag, 2-4. flexible filter element, 3. movable cylinder, 4. cylinder limit rod, 5. cylinder moving hydraulic rod, 6. fixed end plate, 7. hydraulic system, 8. compression cylinder rotating lever, 9. hydraulic cylinder rotating sleeve, 10. passive sprocket, 11. chain, 12. active sprocket, 13. driving mechanism, 14. compression hydraulic rod, 15. compression plate. DETAILED DESCRIPTION
[0029] The present invention will be further explained below in conjunction with the accompanying drawings.
[0030] like Figure 1-4 As shown, the present invention provides a screw-type mechanical high-dry solid-liquid separator, comprising: a filtrate discharge chamber 1, a flexible filter tube bundle 2, a movable cylinder 3, a cylinder limiting rod 4, a cylinder moving hydraulic rod 5, a fixed end plate 6, a hydraulic system 7, a compression cylinder rotating lever 8, a hydraulic cylinder rotating sleeve 9, a passive sprocket 10, a chain 11, a driving sprocket 12, a driving mechanism 13, a compression hydraulic rod 14 and a compression plate 15.
[0031] The filtrate discharge chamber 1 is connected and fixed to the cylinder limit rod 4, and the other end of the cylinder limit rod 4 is fixed to the fixed end plate 6, so that an integral fixed frame is formed by the fixed end plate 6 and the filtrate discharge chamber 1. The movable cylinder 3 is a circular cylinder structure, with flanges at both ends, and through holes are opened on the flanges, and the cylinder limit rod 4 passes through the through holes, so that the movable cylinder 3 can move forward and backward along the cylinder limit rod 4.
[0032] The right end of the movable cylinder 3 is connected and fixed to the cylinder moving hydraulic rod 5, and the cylinder body of the cylinder moving hydraulic rod 5 is connected and fixed to the fixed end plate 6. When the cylinder moving hydraulic rod 5 is working, the movable cylinder 3 can be moved forward and backward. The movable cylinder 3 is restricted on the cylinder limit rod 4, so that it can move along a fixed track.
[0033] The filtrate discharge chamber 1 is a circular cavity structure with a central feed port, and low-solid content materials enter the equipment through the feed port; the filtrate discharge chamber 1 is an internal hollow structure, serving as a channel for the circulation of the filtrate; the inner side of the filtrate discharge chamber 1 has a plurality of filtrate outflow holes, each of which is connected to the flexible filter tube bundle 2. When the equipment is working, the filtrate flows into the filtrate outflow hole through the flexible filter tube bundle 2, gathers inside the filtrate discharge chamber 1, and finally discharges the equipment through the liquid outlet at the bottom of the filtrate discharge chamber 1.
[0034] The compression plate 15 is provided with the same number of mounting holes as the filtrate outflow holes of the filtrate discharge chamber 1, for fixing the other end of the flexible filter tube bundle 2. The compression plate 15 is connected and fixed to the compression hydraulic rod 14 on the outside, and can be extended and retracted with the compression hydraulic rod 14 to achieve the effect of compression and pressure relief.
[0035] A compression cylinder rotating lever 8 connected and fixed to the compression plate 15 is also arranged outside the compression plate 15 . The compression cylinder rotating lever 8 extends into the hole of the steel plate extending outside the hydraulic cylinder rotating sleeve 9 and is not fixed to the hydraulic cylinder rotating sleeve 9 .
[0036] The hydraulic cylinder rotating sleeve 9 is sleeved on the telescopic rod of the compression hydraulic rod 14 and is not connected with the compression hydraulic rod 14. At the same time, the hydraulic cylinder rotating sleeve 9 passes through the inner hole of the fixed end plate 6 and is not fixed with the fixed end plate 6.
[0037] The hydraulic cylinder rotating sleeve 9 can rotate independently of the compression hydraulic rod 14 and the fixed end plate 6, thereby driving the compression cylinder rotating lever 8 and the compression plate 15 to rotate together.
[0038] A passive sprocket 10 is provided at the other end of the hydraulic cylinder rotating sleeve 9, which is driven and connected to the active sprocket 12 through a chain 11. The active sprocket 12 is fixed on the driving mechanism 13. When the driving mechanism 13 rotates, the active sprocket 12 is driven to rotate, thereby driving the passive sprocket 10 to rotate, thereby driving the hydraulic cylinder rotating sleeve 9 to rotate, and finally realizing the rotation of the compression plate 15, and the inner side of the compression plate 15 drives the rotation of the flexible filter tube bundle 2.
[0039] The driving mechanism 13 is composed of a motor and a reducer. The motor and the reducer can be of an integrated structure or a split structure with a transmission method such as a chain drive or a belt drive. The output shaft of the reducer serves as the output shaft of the driving mechanism.
[0040] The cylinder moving hydraulic rod 5 and the compression hydraulic rod 14 are both driven by the hydraulic system 7, and the hydraulic system 7 is connected to the cylinder moving hydraulic rod 5 and the compression hydraulic rod 14 respectively through conduits. The hydraulic system 7 is a set of systems. The schematic diagram of the present invention only reflects the connection between the cylinder moving hydraulic rod 5 and the compression hydraulic rod 14 and the hydraulic system 7 drive, and does not indicate the specific corresponding quantity.
[0041] The hydraulic system 7 includes a hydraulic oil pump, a hydraulic valve, auxiliary components (including an oil tank, an oil filter, a cooler, a heater, an accumulator, an oil pipe and a pipe joint), etc., forming a set of devices with complete functions, which can provide power for other devices of the present invention.
[0042] like Figure 5 As shown, the flexible filter tube bundle 2 includes: a filter element fixing sleeve 2-1, a filter bag fixing nut 2-2, a filter bag 2-3 and a flexible filter element 2-4.
[0043] The filter element fixing sleeve 2-1 is arranged at both ends of the flexible filter element 2-4, the filter bag 2-3 is sleeved on the outside of the flexible filter element 2-4, and both ends of the filter bag 2-3 are fixed on the filter element fixing sleeve 2-1 through the filter bag fixing nuts 2-2, wherein the filter bag 2-3 has a filtering function, wherein the filter bag is made of conventional filter cloth material.
[0044] like Figure 6 As shown, a plurality of evenly arranged drainage grooves are provided inside the flexible filter element 2-4, the bottom surface of the drainage groove is a smooth arc, and the width of the notch of the drainage groove is smaller than the width of the bottom surface of the drainage groove.
[0045] The solid-liquid separation steps of the screw-type mechanical high-dry solid-liquid separator include: feeding filling process, compression dehydration process, pressure relief process and unloading process.
[0046] like Figure 1 As shown, during the feeding and filling process of step 1 of the working procedure, the filtrate discharge chamber 1, the movable cylinder 3, and the compression plate 15 can form a closed chamber together, and the low-solid content material enters the closed chamber formed through the feed port. When the low-solid content material enters the chamber, due to the continuous influx of the low-solid content material, the low-solid content material will squeeze each other, and a part of the liquid will be squeezed out to obtain the filtrate. The filtrate enters the flexible filter tube bundle 2 through the filter bag, and then flows into the filtrate outflow hole, and is collected in the filtrate discharge chamber 1, and finally discharged from the device through the liquid outlet at the bottom of the filtrate discharge chamber 1. At this time, all components in the device are in a static state.
[0047] like Figure 2As shown, after the first step of the working step is completed, that is, when the low solid content material continues to be input into the closed cavity, and the closed cavity cannot be squeezed to separate the filtrate, the feeding is stopped, and the second step of the working step of compression and dehydration is started. The compression hydraulic rod 14 starts to extend, driving the compression plate 15 to squeeze the material in the cavity, and the filtrate is discharged from the inside of the equipment. When the filtrate discharge amount is small, the drive mechanism 13 starts to rotate and finally drives the compression plate 15 and the internal flexible filter tube bundle 2 to rotate, which has a twisting effect. In order to promote the stirring effect, the rotation direction of the drive mechanism 13 is repeatedly switched, so that the internal material is fully twisted, so that the material is more fully in contact with the flexible filter tube bundle 2, reducing dead angles, and maximizing the filtrate extrusion. When only a very small amount of filtrate is finally discharged, the drive mechanism 13 stops working. After the compression step, the solid-liquid separation of the low solid content material can be achieved, so that the solid content of the obtained dry material reaches more than 40%.
[0048] like Figure 3 As shown, after the second step of the working step is completed, that is, when there is basically no filtrate discharged, the third step of the working step is started, the compression hydraulic rod 14 starts the contraction action, drives the compression plate 15 to contract, and the pressure inside the equipment is eliminated, thereby achieving the effect of pressure relief. At the same time, when the compression hydraulic rod 14 contracts, the driving mechanism 13 starts the repeated rotation action, thereby loosening the internal material and preparing for the next step of unloading.
[0049] like Figure 4 As shown, after the third working step is completed, that is, when the material in the closed cavity is loosened, the fourth working step of unloading is started, and the compression hydraulic rod 14 starts to extend again, driving the compression plate 15 to concentrate the material in the cavity, and the movable cylinder 3 is separated from the filtrate discharge cavity 1 under the drive of the contraction action of the cylinder moving hydraulic rod 5, and the material in the material cavity of the equipment is discharged from the bottom.
[0050] The screw-type mechanical high-dry solid-liquid separator of the present invention first inputs low-solid content materials into the filtrate discharge chamber, the movable cylinder and the compression plate together form a closed chamber, and performs preliminary filtrate separation, and then starts the compression hydraulic rod compression plate to squeeze the material in the chamber, and then starts the driving mechanism to drive the hydraulic cylinder rotating sleeve to rotate, and then drives the compression cylinder rotating lever through the hydraulic cylinder rotating sleeve, and finally drives the compression plate and the internal flexible filter tube bundle to rotate, and repeatedly switches the rotation direction to maximize the filtrate extrusion, so as to achieve solid-liquid separation of low-solid content materials, so that the solid content of the obtained dry material reaches more than 40%.
[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A screw-type mechanical high-dry solid-liquid separator, characterized in that: include: A filtrate discharge chamber (1), a flexible filter tube bundle (2), a movable cylinder (3), a cylinder limit rod (4), a cylinder moving hydraulic rod (5), a fixed end plate (6), a hydraulic system (7), a compression cylinder rotating lever (8), a hydraulic cylinder rotating sleeve (9), a passive sprocket (10), a chain (11), a driving sprocket (12), a driving mechanism (13), a compression hydraulic rod (14) and a compression plate (15); One side of the filtrate discharge chamber (1) is fixedly connected to the cylinder limiting rod (4), and one end of the cylinder limiting rod (4) is fixedly connected to the fixed end plate (6), forming an integral fixed frame; The two ends of the movable cylinder (3) are slidably connected to the cylinder limit rod (4) through flanges, and one end of the movable cylinder (3) is also fixedly connected to the cylinder moving hydraulic rod (5), and the cylinder moving hydraulic rod (5) is fixedly arranged on the fixed end plate (6). The compression plate (15) is arranged on one side of the movable cylinder (3) and together with the filtrate discharge chamber (1) and the movable cylinder (3) form a closed chamber. The flexible filter tube bundle (2) is arranged on the compression plate (15) and is in communication with the filtrate discharge chamber (1). The compression cylinder rotating lever (8) and one end of the compression hydraulic rod (14) are fixedly connected to the compression plate (15); the compression cylinder rotating lever (8) is connected to the compression hydraulic rod (14) via a hydraulic cylinder rotating sleeve (9); the hydraulic cylinder rotating sleeve (9) is provided with a passive sprocket (10); the passive sprocket (10) is connected to a driving sprocket (12) via a chain (11); the driving sprocket (12) is fixed on the output shaft of the driving mechanism (13); The hydraulic system (7) is connected to the cylinder moving hydraulic rod (5) and the compression hydraulic rod (14) respectively through conduits.
2. The screw-type mechanical high-dry solid-liquid separator according to claim 1, characterized in that: The flexible filter tube bundle (2) comprises: a filter element fixing sleeve (2-1), a filter bag fixing nut (2-2), a filter bag (2-3) and a flexible filter element (2-4); The filter element fixing sleeve (2-1) is arranged at both ends of the flexible filter element (2-4), the filter bag (2-3) is sleeved on the outside of the flexible filter element (2-4), and both ends of the filter bag (2-3) are fixed to the filter element fixing sleeve (2-1) via filter bag fixing nuts (2-2).
3. The screw-type mechanical high-dry solid-liquid separator according to claim 2, characterized in that: A plurality of evenly arranged drainage grooves are provided on the inner side of the flexible filter element (2-4), the bottom surface of the drainage groove is a smooth arc, and the width of the notch of the drainage groove is smaller than the width of the bottom surface of the drainage groove.
4. The screw-type mechanical high-dry solid-liquid separator according to claim 1, characterized in that: A plurality of filtrate outflow holes are provided inside the filtrate discharge chamber (1), and each filtrate outflow hole is connected to a flexible filter tube bundle (2).
5. The screw-type mechanical high-dry solid-liquid separator according to claim 4, characterized in that: A feed inlet is provided in the middle of the filtrate discharge chamber (1), the feed inlet is communicated with the closed chamber, and a liquid outlet is provided at the bottom end of the filtrate discharge chamber (1).
6. The screw-type mechanical high-dry solid-liquid separator according to claim 1, characterized in that: The other end of the compression cylinder rotating lever (8) extends into a hole in a steel plate extending outside the hydraulic cylinder rotating sleeve (9), the hydraulic cylinder rotating sleeve (9) is sleeved on the telescopic rod of the compression hydraulic rod (14), and the hydraulic cylinder rotating sleeve (9) and the telescopic rod of the compression hydraulic rod (14) extend through the inner hole of the fixed end plate (6) to the outside of the integral fixed frame.
7. The screw-type mechanical high-dry solid-liquid separator according to claim 1, characterized in that: The compression plate (15) is provided with a plurality of mounting holes for mounting the flexible filter tube bundle (2).
8. The screw-type mechanical high-dry solid-liquid separator according to claim 1, characterized in that: The solid-liquid separation process includes the following steps: Step 1: Low-solid-content materials are continuously fed into the closed cavity through the feed port. The low-solid-content materials in the closed cavity will squeeze each other, and a portion of the liquid will be squeezed out to obtain filtrate. The filtrate flows into the filtrate outflow hole through the flexible filter tube bundle, and is collected inside the filtrate discharge cavity, and finally discharged from the device through the liquid outlet at the bottom of the filtrate discharge cavity; Step 2: When the low-solid material continues to be fed into the closed cavity, and the filtrate cannot be squeezed and separated in the closed cavity, stop feeding, start the compression hydraulic rod compression plate to squeeze the material in the cavity, further separate the liquid in the low-solid material, and let the filtrate flow into the filtrate discharge cavity through the flexible filter tube bundle, and then discharge the equipment. When the filtrate discharge amount is small, the drive mechanism starts to rotate and finally drives the compression plate and the internal flexible filter tube bundle to rotate, and repeatedly switches the rotation direction to maximize the filtrate squeeze. When only a very small amount of filtrate is finally discharged, the drive mechanism stops working; Step 3: When there is basically no filtrate discharged, start the compression hydraulic rod to drive the compression plate to contract, and at the same time start the driving mechanism to drive the hydraulic cylinder rotating sleeve to rotate, and then drive the compression cylinder rotating lever through the hydraulic cylinder rotating sleeve to rotate the compression plate and the internal flexible filter tube bundle to loosen the material in the closed cavity; Step 4: After the loosening of the material in the closed cavity is completed, the compression hydraulic rod is started to extend, driving the compression plate to concentrate the material in the closed cavity, and then the movable cylinder is driven to slide by the moving hydraulic rod to separate from the filtrate discharge cavity, so that the material is discharged from the bottom of the equipment.