Pressure-adjustable solid-liquid separation apparatus

Abstract

A pressure-adjustable solid-liquid separation apparatus, comprising an injection pushing bin (1) and a plurality of filter chamber structural plates (3) arranged side by side, high-pressure filter chambers (31) being formed between the filter chamber structural plates (3). A solid-liquid mixture in the injection pushing bin (1) is pushed by a high pressure into the high-pressure filter chambers (31), solid substances in the solid-liquid mixture accumulating on precision filter layers (36) of the filter chamber structural plates (3), and liquid substances in the solid-liquid mixture passing through the precision filter layers (36) and filter chamber lining plates (37) of the filter chamber structural plates (3) and then flowing out from liquid outlets (34); after being pushed by the high pressure multiple times, the solid substances form filter cakes in the high-pressure filter chambers (31). The pressure-adjustable solid-liquid separation apparatus solves the problem of reduction in the value of using solid substances caused by the use of flocculating agents.

Description

A pressure-adjustable solid-liquid separation equipment Technical Field

[0001] The present invention relates to the technical field of solid-liquid physical separation processing, and more particularly to a pressure-adjustable solid-liquid separation device. Background Art

[0002] Along with people's daily life, agricultural activities and industrial activities, there are a large number of solid-liquid mixed state processing environments. Therefore, it is impossible to directly and effectively utilize the useful solid or liquid substances in the solid-liquid mixture, and it is impossible to achieve organic recycling or direct reuse. In addition, the targeted treatment requirements for solid-liquid mixtures generated by environmental protection and ecological needs will be higher and the treatment difficulty will be greater. Therefore, there is a need to separate the solid and liquid substances in the solid-liquid mixture. Under normal circumstances, the solid-liquid mixtures generated by daily life, agricultural activities and industrial activities usually appear in the form of fluids. The liquid substances contain insoluble organic solid substances and soluble solid substances, which are difficult to treat.

[0003] The most common existing treatment method for these solid-liquid mixtures is solid-liquid separation, which separates the liquid and solid components of the mixture for separate utilization or disposal. In the past, to achieve optimal separation, many industries required the addition of flocculants during the treatment process. (A flocculant is a chemical agent that causes suspended solids in water to coagulate and settle. It typically neutralizes the charge of particles by providing a negative charge, causing the particles to aggregate into larger, more easily settled clumps, thereby reducing water turbidity and improving water quality. Flocculants are commonly used in environmental wastewater treatment, construction, smelting, and mineral processing, among other applications.) However, these flocculants often come with a range of negative impacts, such as increased treatment costs and environmental impact. The resulting solids have reduced or no recycling value, can cause secondary pollution, and some are even classified as hazardous solid waste. Furthermore, whether using flocculants or not, existing technologies cannot meet the demands of various industries for maximizing profits and optimizing environmental protection (while maintaining economic benefits for users) in industrial and agricultural production activities. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art that the utilization value of solid substances formed in solid-liquid separation is reduced or further environmental problems are caused due to the addition of flocculants, the present invention provides a pressure-adjustable solid-liquid separation equipment, which is provided with a multi-layer filter chamber structural plate and a high-pressure filter chamber. The solid-liquid mixture in the injection and pushing bin is pushed into the high-pressure filter chamber by utilizing a high-pressure environment. The solid-liquid mixture is subjected to the high-pressure pushing effect and the barrier effect of the filter chamber structural plate to achieve solid-liquid separation. The solid substances in the solid-liquid mixture remain in the high-pressure filter chamber to form a mud cake, and the liquid substance passes through the precision filter layer in the filter chamber to complete the solid-liquid separation without the action of flocculants, thereby completely eliminating the reduction in the utilization value of solid substances caused by flocculants or the generation of further environmental problems.

[0005] The technical solution of the present invention is as follows:

[0006] A pressure-adjustable solid-liquid separation device comprises an injection and pushing bin and a plurality of filter chamber structural plates arranged side by side, a high-pressure filter chamber is formed between the filter chamber structural plates, the solid-liquid mixture in the injection and pushing bin enters the high-pressure filter chamber under high pressure, the solid matter in the solid-liquid mixture accumulates on the precision filter layer of the filter chamber structural plate, the liquid matter in the solid-liquid mixture passes through the precision filter layer of the filter chamber structural plate and the filter chamber lining plate and is in a pressure-relieved state and flows out from the liquid outlet, after multiple high-pressure pushing feeds, the solid matter forms a mud cake in the high-pressure filter chamber.

[0007] The top of the injection and pushing bin is connected to the feed pipeline, and the other end is connected to the discharge pipeline. The filter chamber structural plates are all provided with feed holes at the same position and connected to form a feed channel. The discharge pipeline is connected to the feed channel, so that the discharge pipeline is connected to the high-pressure filter chamber. The filter chamber structural plate is provided with a liquid outlet, which is connected to the outside of the high-pressure filter chamber.

[0008] Under high pressure, the solid-liquid mixture is pushed through the discharge pipe from the injection chamber into the feed channel formed by the filter chamber structural plates. The discharge pipe is connected to the feed channel, which in turn is connected to the high-pressure filter chamber formed between the filter chamber structural plates. Therefore, under high pressure, the solid-liquid mixture fills the high-pressure filter chamber. The liquid in the solid-liquid mixture flows out through the filter chamber structural plates, while the solid is retained in the high-pressure filter chamber, achieving solid-liquid separation. After repeated high-pressure treatment, the solid is squeezed in the high-pressure filter chamber to form a saturated mud cake. After this treatment, the liquid and solid substances in the solid-liquid mixture are separated, and the solid substances can still form a mud cake in the absence of flocculants, avoiding the reduction of the utilization value of the solid substances caused by flocculants or further environmental problems.

[0009] The above-mentioned pressure-adjustable solid-liquid separation equipment, the top of the injection and pushing bin is connected to the normal pressure feed pipeline and the first high-pressure air inlet pipeline, the solid-liquid mixture flows into the injection and pushing bin through the normal pressure feed pipeline under normal pressure, and the high-pressure gas enters the injection and pushing bin through the first high-pressure air inlet pipeline and pushes the solid-liquid mixture in the injection and pushing bin to flow toward the discharge pipeline.

[0010] The top of the injection and pushing bin is connected to the normal pressure feed pipeline and the first high pressure air intake pipeline. A feed valve is set between the normal pressure feed pipeline and the injection and pushing bin, and a first high pressure air intake valve is set between the first high pressure air intake pipeline and the injection and pushing bin.

[0011] In the above-mentioned pressure-adjustable solid-liquid separation equipment, the injection and pushing bin is under normal pressure. The feed valve is opened, and the solid-liquid mixture is pumped and flows into the injection and pushing bin through the feed pipeline. After the amount of solid-liquid mixture in the injection and pushing bin reaches the set value, the pumping of the solid-liquid mixture is stopped, the feed valve is closed, and the first high-pressure air inlet valve is started. High-pressure gas is injected into the injection and pushing bin through the first high-pressure air inlet pipeline, so that the solid-liquid mixture in the injection and pushing bin flows into the high-pressure filter chamber from the discharge pipeline.

[0012] In the above-mentioned pressure-adjustable solid-liquid separation equipment, a pressure reducing valve is provided in the injection and pushing chamber.

[0013] The above-mentioned pressure-adjustable solid-liquid separation equipment has a pressure gauge provided in the injection and pushing bin.

[0014] The above-mentioned pressure-adjustable solid-liquid separation equipment, the injection and pushing bin includes a bin body and a bin cover, and high-pressure flanges are respectively provided at the connection between the bin body and the bin cover. The high-pressure flanges between the bin body and the bin cover are connected by a high-pressure screw, so that a sealed space is formed in the injection and pushing bin.

[0015] The above-mentioned pressure-adjustable solid-liquid separation equipment has a bottom of the injection-pushing bin and a support frame fixed to the base surface, so that the bottom of the injection-pushing bin is restricted by the support frame, and a semi-enclosed safety wall is set around the injection-pushing bin.

[0016] Furthermore, the discharge pipeline is arranged along the safety wall.

[0017] In the aforementioned pressure-adjustable solid-liquid separation equipment, a drain valve is provided at the bottom of the injection and push chamber. The drain valve is connected to a discharge pipeline. When the injection and push chamber needs to be emptied, the drain valve is opened, and the contents of the injection and push chamber flow out through the discharge pipeline. If the emptying is not smooth, the first high-pressure air inlet valve can be opened to inject high-pressure gas into the chamber to push the contents out of the injection and push chamber.

[0018] Furthermore, the port of the discharge pipeline arranged in the injection and pushing bin is close to and opposite to the emptying valve, so that the port of the discharge pipeline arranged in the injection and pushing bin is located at the bottom of the injection and pushing bin.

[0019] The above-mentioned pressure-adjustable solid-liquid separation equipment has a discharge valve provided on the discharge pipeline, a second high-pressure air inlet pipeline provided between the discharge pipeline and the filter chamber structure plate, and a second high-pressure air inlet valve provided between the second high-pressure air inlet pipeline and the filter chamber structure plate.

[0020] The above-mentioned pressure-adjustable solid-liquid separation equipment, the filter chamber structure plate includes a filter element arranged in the middle and a frame structure arranged on the periphery, the surface of the filter element is a precision filter layer, the precision filter layer is recessed in the frame structure, the filter chamber structure plates are arranged side by side so that the frame structures of each filter chamber structure plate are in contact and connected, and a high-pressure filter chamber is formed between the precision filter layers.

[0021] The precision filter layer is used to intercept solid matter, and usually includes a mesh structure (i.e. filter screen) or a membrane structure (i.e. filter membrane).

[0022] Furthermore, the filter element includes a filter chamber partition, a filter chamber lining and a precision filter layer from the inside to the outside. The space between the filter chamber lining and the filter chamber partition is connected to the liquid outlet. The liquid substance passes through the precision filter layer and the filter chamber lining and flows out from the liquid outlet.

[0023] Furthermore, a liquid outlet is provided at the bottom of the frame structure, and the liquid outlet is communicated with the high-pressure filter chamber.

[0024] Furthermore, a sealing ring is provided between the frame structures of the filter chamber structural plates, or a high-precision hard seal is used between the frame structures of the filter chamber structural plates.

[0025] The above-mentioned pressure-adjustable solid-liquid separation equipment, the filter chamber structure plate is arranged between the fixed base and the movable top plate, the fixed base, the filter chamber structure plate and the movable top plate are all arranged on the same sliding track, the movable top plate is connected to the high-pressure driving device and is pushed by the high-pressure driving device, so that the movable top plate slides on the sliding track, and the movable top plate pushes the filter chamber structure plate to slide on the sliding track in the direction close to the fixed base.

[0026] The filter chamber structural plates are arranged side by side on a sliding track and are slidably connected to the sliding track. One end of the sliding track is a fixed base, which is fixed in position and a support structure, such as a support rib, is provided on the side away from the filter chamber structural plate to provide a reverse support force to the fixed base when the filter chamber structural plate applies pressure to the fixed base under the action of the movable top plate, thereby preventing the fixed base from deforming or displacing and providing a force to press the filter chamber structural plate. On the sliding track, the filter chamber structural plate is flanked by a fixed base and a movable top plate that can slide on the sliding track. When the high-pressure driving device is started, the movable top plate is pushed to slide on the sliding track toward the fixed base, thereby pushing the filter chamber structural plate to slide toward the fixed base. Under the dual force of the fixed base and the movable top plate, the filter chamber structural plates are pressed into contact with each other, which improves the sealing of the high-pressure filter chamber on the one hand, and on the other hand, the pressure in the high-pressure filter chamber is increased, and the high-pressure gas in the second high-pressure air inlet line can effectively push the liquid in the solid-liquid mixture to flow out through the filter chamber structural plate, thereby achieving forced solid-liquid separation under high pressure.

[0027] Furthermore, a pushing track is provided beside the sliding track, and a pushing device is provided on the pushing track. The pushing device slides on the pushing track and pushes the filter chamber structure plate to slide in a direction away from the fixed base.

[0028] The high-pressure drive device drives the movable top plate to push the filter chamber structural plates toward the fixed base, while the driving track slides the filter chamber structural plates away from the fixed base. The movable top plate tightens the connection between the filter chamber structural plates, increasing the pressure in the high-pressure filter chamber. The driving device separates the filter chamber structural plates, opening the high-pressure filter chamber. When the solid matter in the solid-liquid mixture forms a mud cake on the filter chamber structural plates, the high-pressure gas from the second high-pressure air inlet line stops, and the driving device moves the filter chamber structural plates away from the fixed base, opening the high-pressure filter chamber and allowing space for the mud cake to fall off.

[0029] Furthermore, a stripping device is provided at the adjacent end of the sliding track, and the mud cake formed in the high-pressure filter chamber falls off the precision filter layer of the filter chamber structure plate under the action of the stripping device.

[0030] When the filter chamber structure plate is separated and the high-pressure filter chamber is opened, the mud cake usually adheres to the surface of the precision filter layer of the filter chamber structure plate and is difficult to fall under the action of gravity. Therefore, a stripping device is set to promote the mud cake to fall onto the precision filter layer.

[0031] The stripping device can be a blowing device or a movable scraper or other device that can peel the mud cake from the surface of the precision filter layer.

[0032] Furthermore, the fixed base, filter chamber structural plate, movable top plate and sliding track are all arranged on the separator, and the separator is provided with columns and beams, the columns are supported on both sides of the beams, and the fixed base, filter chamber structural plate, movable top plate and sliding track are all arranged on the beams.

[0033] The present invention, based on the above-mentioned solution, has the beneficial effect of overturning this traditional approach. By improving the separation technology, it can achieve optimal separation results without the addition of flocculants. This improvement not only significantly reduces separation costs but also greatly improves user economic benefits. It also helps protect the environment and reduces the burden on humans.

[0034] 1. The present invention realizes solid-liquid separation without adding flocculants, so that the separated solid matter has recycling value and does not cause secondary environmental problems.

[0035] 2. The separation efficiency of the present invention is higher than that of traditional solid-liquid separators. Traditional solid-liquid separators require the help of flocculants to achieve solid-liquid separation. Compared with the present invention, the process of sedimentation flocculation or static flocculation is added, which takes a longer time and reduces the efficiency. On the other hand, in the process of forming the mud cake, the present invention has both the high-pressure effect of high-pressure gas and the hydraulic effect of the high-pressure oil pump transmitted through the movable top plate, so that the environmental pressure of the high-pressure filter chamber formed by the mud cake is higher than that of the traditional solid-liquid separator. The working pressure of the high-pressure filter chamber of the present invention can reach 1.6Mpa-20Mpa. Traditional solid-liquid separators, such as filter presses or dehydrators, do not have a pressurized structure, and the working environment for the formation of their mud cakes is a low-pressure environment of less than 1.6Mpa.

[0036] 3. The filtration fineness of the present invention can reach the picometer level. Through the promotion of double pressure, the precision filter chamber structure plate can achieve an accuracy range of 1 micron to 1 nanometer. The filter chamber structure plate can be replaced in a targeted manner according to different solid-liquid mixtures. At the same time, the air pressure of the high-pressure gas can also be adjusted accordingly to meet the solid-liquid separation requirements of different substances.

[0037] 4. The present invention is not limited to the treatment of solid-liquid mixtures, but can also be extended to the solid-liquid separation needs of soluble solids such as seawater desalination. High pressure is used to promote the outflow of liquid substances, thereby precipitating soluble solids and retaining them on the surface of the precision filter layer to achieve a solid-liquid separation effect.

[0038] 5. The present invention adopts the input of adjustable high-pressure gas to replace the original pump pressurization method, thereby saving energy consumption, reducing operating costs, and facilitating the promotion and application of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] FIG1 is a schematic structural diagram of the present invention.

[0041] FIG2 is a schematic diagram showing the structure of a high-pressure filter chamber formed by multiple filter chamber structural plates.

[0042] FIG3 is a partial enlarged view of FIG2 .

[0043] FIG4 is a schematic structural diagram of the filter chamber structural plate.

[0044] Among them, the reference numerals in the figures are:

[0045] 1. Injection chamber; 101. Normal pressure feed line; 102. Feed valve; 103. First high-pressure air inlet line; 104. First high-pressure air inlet valve; 105. Pressure reducing valve; 106. Pressure gauge; 107. Chamber; 108. Chamber cover; 109. Drain valve; 110. Discharge line; 111. Discharge valve; 112. Second high-pressure air inlet line; 113. Second high-pressure air inlet valve; 114. High-pressure flange; 115. High-pressure screw;

[0046] 2. Separator; 21. Column; 22. Crossbeam; 23. Movable top plate; 24. Fixed base; 25. High-pressure oil pump;

[0047] 3. Filter chamber structure plate; 31. High-pressure filter chamber; 32. Feed channel; 33. Sealing ring; 34. Liquid outlet; 35. Frame structure; 36. Precision filter layer; 37. Filter chamber lining plate; 38. Filter chamber partition plate; 39. Feed hole;

[0048] 4. Security wall;

[0049] 5. Push the cart. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] A pressure-adjustable solid-liquid separation equipment, as shown in Figure 1, includes an injection and pushing bin 1 and a plurality of filter chamber structural plates 3 arranged side by side. A high-pressure filter chamber 31 is formed between the filter chamber structural plates 3. The solid-liquid mixture in the injection and pushing bin 1 enters the high-pressure filter chamber 31 under high pressure, and the solid matter in the solid-liquid mixture accumulates on the filter chamber structural plates 3. The liquid matter in the solid-liquid mixture flows out from the liquid outlet 34 of the high-pressure filter chamber 31. After multiple high-pressure pushes, the solid matter forms a mud cake in the high-pressure filter chamber 31.

[0052] One end of the injection and pushing bin 1 is connected to the feed pipeline, and the other end is connected to the discharge pipeline 110. The filter chamber structural plates 3 are all provided with feed holes 39 at the same position to form a feed channel 32. The discharge pipeline 110 is connected to the feed channel 32, so that the discharge pipeline 110 is connected to the high-pressure filter chamber 31. The filter chamber structural plate 3 is provided with a liquid outlet 34, and the liquid outlet 34 is connected to the high-pressure filter chamber 31.

[0053] Under the action of high pressure, the solid-liquid mixture flows from the injection chamber 1 through the discharge pipe 110 into the feed channel 32 formed by the filter chamber structural plate 3. The discharge pipe 110 is connected to the feed channel 32, and the feed channel 32 is connected to the high-pressure filter chamber 31 formed between the filter chamber structural plates 3. Therefore, under the action of high pressure, the solid-liquid mixture fills the high-pressure filter chamber 31. The liquid substance in the solid-liquid mixture flows out through the filter chamber structural plate 3, while the solid substance is retained in the high-pressure filter chamber 31, achieving solid-liquid separation. After multiple high-pressure actions, the solid substance is squeezed in the high-pressure filter chamber 31 to form a mud cake. After this treatment, the liquid substance and solid substance in the solid-liquid mixture are separated, and the solid substance can still form a mud cake in the absence of a flocculant, avoiding the reduction of the utilization value of the solid substance caused by the flocculant or further environmental problems.

[0054] The top of injection and pushing chamber 1 is connected to a normal-pressure feed line 101 and a first high-pressure air intake line 103. The solid-liquid mixture flows into injection and pushing chamber 1 through normal-pressure feed line 101 under normal pressure. High-pressure gas enters injection and pushing chamber 1 through first high-pressure air intake line 103, pushing the solid-liquid mixture in injection and pushing chamber 1 toward discharge line 110. A feed valve 102 is provided between normal-pressure feed line 101 and injection and pushing chamber 1, and a first high-pressure air intake valve 104 is provided between first high-pressure air intake line 103 and injection and pushing chamber 1.

[0055] The injection chamber 1 is under normal pressure. The feed valve 102 is opened, and the solid-liquid mixture is pumped and flows into the injection chamber 1 through the feed pipeline. After the amount of solid-liquid mixture in the injection chamber 1 reaches the set value, the pumping of the solid-liquid mixture is stopped, and the first high-pressure air inlet valve 104 is started. High-pressure gas is injected into the injection chamber 1 through the first high-pressure air inlet pipeline 103, so that the solid-liquid mixture in the injection chamber 1 flows into the high-pressure filter chamber 31 from the discharge pipeline 110.

[0056] The injection pushing chamber 1 is provided with a pressure reducing valve 105. The pressure reducing valve 105 is used to reduce the pressure in the injection pushing chamber 1, so as to facilitate the injection of substances such as solid-liquid mixture into the injection pushing chamber 1.

[0057] The injection and pushing chamber 1 is provided with a pressure gauge 106. The pressure gauge 106 is used to monitor the pressure inside the injection and pushing chamber 1, thereby determining the pressure state inside the injection and pushing chamber 1, thereby achieving control of the first high-pressure air inlet valve 104, the pressure reducing valve 105, the second high-pressure air inlet valve 113, the feed valve 102, and other valves.

[0058] The injection chamber 1 comprises a chamber body 107 and a chamber cover 108. High-pressure flanges 114 are provided at the junction of the chamber body 107 and the chamber cover 108. These flanges 114 are connected via a high-pressure screw 115, creating a sealed space within the chamber 1. The injection chamber 1 is a sealed structure formed by the chamber body 107 and the chamber cover 108. The high-pressure flanges 114 are provided at the junction of the chamber body 107 and the chamber cover 108. High-pressure screws 115 are used to tighten the high-pressure flanges 114, ensuring a tight fit between the chamber body 107 and the chamber cover 108, forming a sealed space. In this embodiment, the longitudinal cross-section of the injection chamber 1 is shaped like a "racetrack," with semicircular ends and a rectangular center.

[0059] The bottom of the injection chamber 1 is restrained by a support frame fixed to the base surface, and a semi-enclosed safety wall 4 surrounds the chamber 1. The chamber 1 is positioned within this semi-enclosed structure, with the bottom of the safety wall 4 being a leveled base surface. This wall can be elevated if necessary to ensure the flatness and strength of the base surface and prevent the chamber 1 from sinking or becoming unstable. The support frame can be cast in concrete or fabricated from metal and fixed to the base surface. The chamber 1 is then inserted into a recess in the support frame and secured to the support frame via a mechanical connection, such as a metal ring.

[0060] A discharge pipeline 110 is provided along the safety wall 4. A drain valve 109 is provided at the bottom of the injection and pushing bin 1 and is connected to the discharge pipeline. When the injection and pushing bin 1 needs to be emptied, the drain valve 109 is opened, and the material inside the injection and pushing bin 1 flows out through the discharge pipeline. If the emptying is not smooth, the first high-pressure air inlet valve 104 can be opened to inject high-pressure gas into the interior to push the material out of the injection and pushing bin 1.

[0061] The port of the discharge pipeline 110 disposed in the injection and pushing bin 1 is close to and opposite to the emptying valve 109 , so that the port of the discharge pipeline 110 disposed in the injection and pushing bin 1 is located at the bottom of the injection and pushing bin 1 .

[0062] The injection and pushing chamber 1 has a discharge port at its lower end. The portion of the discharge pipe 110 located within the chamber 1 extends upward to the same height as the discharge port, then bends and extends outward through the discharge port. The discharge pipe 110 is sealed from the discharge port, requiring a sufficient strength to meet the high-pressure discharge requirements of the injection and pushing chamber 1. To prevent damage to the safety wall 4, the discharge pipe 110 is secured to the inner surface of the safety wall 4 using a combination of metal rings and bolts to provide support and stability. This allows the discharge pipe 110 to scale the safety wall 4 and extend to the exterior.

[0063] In this embodiment, the first high-pressure air intake valve 104 and the feed valve 102 are both electrically controlled and can be remotely controlled by connecting to other electrical components.

[0064] A discharge valve 111 is provided on the discharge pipeline 110 , a second high-pressure air intake pipeline 112 is provided between the discharge pipeline 110 and the filter chamber structure plate 3 , and a second high-pressure air intake valve 113 is provided between the second high-pressure air intake pipeline 112 and the filter chamber structure plate 3 .

[0065] As shown in Figures 2, 3, and 4, the filter chamber structure plate 3 includes a filter element disposed in the middle and a peripheral frame structure 35 (i.e., the convex-shaped structure at both ends of the filter chamber structure plate 3). The filter element comprises, from the inside out, a filter chamber partition plate 38, a filter chamber lining plate 37, and a precision filter layer 36. The precision filter layer 36 is recessed within the frame structure 35. The filter chamber structure plates 3 are arranged side by side so that the frame structures 35 of each filter chamber structure plate 3 are in contact and connected, forming a high-pressure filter chamber 31 between the precision filter layers 36. The space between the filter chamber lining plate 37 and the filter chamber partition plate 38 is connected to the liquid outlet 34, which is disposed at the bottom of the filter chamber structure plate 3. Driven by high pressure, liquid substances pass through the precision filter layer 36 and the filter chamber lining plate 37, enter the space between the filter chamber lining plate 37 and the filter chamber partition plate 38, and flow out of the liquid outlet 34. A sealing ring 33 is provided between the frame structures 35 of the filter chamber structural plate 3 or a high-precision hard sealing process is adopted between the frame structures 35, so that the frame structures 35 can achieve a high-quality sealing state under high pressure.

[0066] As shown in Figure 1, the filter chamber structure plate 3 is arranged between the fixed base 24 and the movable top plate 23. The fixed base 24, the filter chamber structure plate 3 and the movable top plate 23 are all arranged on the same sliding track. The movable top plate 23 is connected to the high-voltage driving device and is pushed by the high-voltage driving device, so that the movable top plate 23 slides on the sliding track. The movable top plate 23 pushes the filter chamber structure plate 3 to slide on the sliding track toward the fixed base 24.

[0067] The filter chamber structure plate 3 is arranged side by side on the sliding track and is slidably connected to the sliding track. One end of the sliding track is a fixed base 24. The position of the fixed base 24 is fixed, and a supporting structure, such as a supporting rib, is provided on the side away from the filter chamber structure plate 3 to provide the fixed base 24 with a reverse supporting force when the filter chamber structure plate 3 applies pressure to the fixed base 24 under the action of the movable top plate 23, thereby preventing the fixed base 24 from being deformed or displaced, and also providing a force to press the filter chamber structure plate 3. On the sliding track, the two sides of the filter chamber structural plate 3 are respectively a fixed base 24 and a movable top plate 23 that can slide on the sliding track. When the high-pressure driving device is started, the movable top plate 23 is pushed to slide on the sliding track toward the fixed base 24, thereby pushing the filter chamber structural plate 3 to slide toward the fixed base 24. Under the dual forces of the fixed base 24 and the movable top plate 23, the filter chamber structural plates 3 are in tight contact with each other, which on the one hand improves the sealing performance of the high-pressure filter chamber 31, and on the other hand, the pressure in the high-pressure filter chamber 31 is increased, and the high-pressure gas of the second high-pressure air inlet line 112 can well push the liquid substance in the solid-liquid mixture to pass through the filter chamber structural plate 3 and flow out, thereby realizing forced separation of solid and liquid in a high-pressure state.

[0068] In this embodiment, the high-pressure driving device is a high-pressure oil pump 25 , which drives the movable top plate 23 to move on the sliding rail (ie, the hydraulically driven guide rail) through hydraulic drive.

[0069] A pushing track is provided beside the sliding track, and a pushing device is provided on the pushing track. The pushing device slides on the pushing track and pushes the filter chamber structure plate 3 to slide away from the fixed base 24. The high-pressure driving device drives the movable top plate 23 to push the filter chamber structure plate 3 to slide toward the fixed base 24, while the pushing track slides the filter chamber structure plate 3 away from the fixed base 24. The movable top plate 23 makes the connection between the filter chamber structure plates 3 tighter and increases the pressure of the high-pressure filter chamber 31. The pushing device separates the filter chamber structure plates 3, making the high-pressure filter chamber 31 open. After the solid matter in the solid-liquid mixture forms a mud cake on the precision filter layer 36 of the filter chamber structure plate 3, the high-pressure gas from the second high-pressure air inlet pipe 112 stops, and the pushing device moves the filter chamber structure plate 3 away from the fixed base 24. The high-pressure filter chamber 31 opens, allowing space for the mud cake to fall off.

[0070] In this embodiment, the pushing device is a push trolley 5 equipped with a push rod. The push rail is located adjacent to the sliding track, and the push trolley 5 moves on the push rail. Separation plates are provided on the filter chamber structural plates 3 facing the push rail. When the trolley moves on the push rail, the push rod on the trolley pushes the separation plates of the filter chamber structural plates 3 one by one, causing the filter chamber structural plates 3 to slide on the sliding track, thereby separating the filter chamber structural plates 3. To ensure balanced movement of the filter chamber structural plates 3, push rails and push devices are provided on both sides of the sliding track, resulting in synchronized movement of the push trolleys 5 on both sides.

[0071] A stripping device is provided near the end of the sliding track. The mud cake formed in the high-pressure filter chamber 31 falls off the filter chamber structure plate 3 under the action of the stripping device. When the filter chamber structure plate 3 is separated and the high-pressure filter chamber 31 is opened, the mud cake usually adheres to the surface of the filter chamber structure plate 3 and is difficult to fall under the action of gravity. Therefore, a stripping device is provided to promote the mud cake to fall onto the filter chamber structure plate 3.

[0072] In this embodiment, the stripping device is an air blowing device that blows air at the junction of the mud cake and the filter chamber structure plate 3 to cause the mud cake to fall. In other embodiments, a movable scraper can be provided, and a robotic arm can be used to extend the scraper into the open high-pressure filter chamber 31 to scrape off the mud cake.

[0073] The fixed base 24, the filter chamber structural plate 3, the movable top plate 23 and the sliding track are all arranged on the separator 2. The separator 2 is provided with columns 21 and beams 22. The columns 21 are supported on both sides of the beams 22. The fixed base 24, the filter chamber structural plate 3, the movable top plate 23 and the sliding track are all arranged on the beams 22.

[0074] When feeding into injection chamber 1, the first high-pressure inlet valve 104, the discharge valve 111, and the second high-pressure inlet valve 113 are all closed, sealing the high-pressure gas pipeline and stopping the flow of high-pressure gas into injection chamber 1. Then, the pressure-reducing valve 105 is opened to adjust the pressure within injection chamber 1 to normal pressure. Once the pressure within chamber 1 to be injected drops to normal pressure, the feed valve 102 is opened, while the pressure-reducing valve 105 remains open, maintaining normal pressure within injection chamber 1. The solid-liquid mixture is then pumped into injection chamber 1 through the normal-pressure feed pipeline 101. In this embodiment, a liquid level sensor is installed within chamber 1 to monitor the liquid level within chamber 1. Once the liquid level within chamber 1 reaches a specified value, pumping of the solid-liquid mixture is stopped, and the feed valve 102 and pressure-reducing valve 105 are then closed. In other embodiments, the amount of the solid-liquid mixture flowing into the injection chamber 1 can be determined by monitoring the flow rate of the solid-liquid mixture flowing through the feed pipeline, such as by setting a flow meter in the feed pipeline, and when the value recorded by the flow meter reaches a specified value, the pumping of the solid-liquid mixture is stopped, and the feed valve 102 and the pressure reducing valve 105 are closed.

[0075] Open the discharge valve 111 on the discharge line 110, connecting the discharge line 110 to the feed channel 32 of the filter chamber structural plate 3. Then, open the first and second high-pressure air inlet valves 104 and 113, allowing high-pressure gas to flow into the injection chamber 1 and feed channel 32, respectively. The high-pressure gas from the first high-pressure air inlet line 103 pushes the solid-liquid mixture in the injection chamber 1 out of the discharge line 110. Then, at a location near the filter chamber structural plate 3, the high-pressure gas from the second high-pressure air inlet line 112 propels the solid-liquid mixture into the discharge line 110 at high pressure, and then into each high-pressure filter chamber 31. Within the high-pressure filter chamber 31, under the influence of high pressure, the liquid in the solid-liquid mixture passes through the precise filter layer 36 on the filter chamber structural plate 3 and flows out of the liquid outlet 34 through the flow channel within the filter chamber structural plate 3. The solid matter remains in the high-pressure filter chamber 31 and, under the influence of high pressure, adheres to the surface of the filter chamber structural plate 3. When the solid-liquid mixture in the injection and pushing bin 1 completely flows out of the discharge pipeline 110, or when the pressure in the injection and pushing bin 1 is detected by the pressure gauge 106 to be stable at the same pressure value as the high-pressure gas in the first high-pressure air inlet pipeline 103, the first high-pressure air inlet valve 104, the second high-pressure air inlet valve 113 and the discharge valve 111 are closed to stop the forced solid-liquid separation of the solid-liquid mixture.

[0076] The push trolley 5 is started and moves on the push track. By pushing the separation plates on the filter chamber structural plates 3, the filter chamber structural plates 3 are pushed one by one, so that the filter chamber structural plates 3 are separated and the high-pressure filter chambers 31 between the filter chamber structural plates 3 are opened. After the filter chamber structural plates 3 are moved to the specified positions by the push trolley 5, the stripping device is started to strip the mud cake attached to the surface of the filter chamber structural plates 3. In this embodiment, the stripping device is a high-pressure blowing device. The high-pressure blowing device is arranged at the upper end of the filter chamber structural plates 3. According to the specified displacement position of each filter chamber structural plate 3, the blowing port is aligned with the surface of the filter chamber structural plate 3 to blow out high-pressure gas, so that the mud cake falls off the surface of the filter chamber structural plates 3. After the mud cake is stripped off, the high-pressure driving device is started. Under the action of hydraulic pressure, the movable top plate 23 is driven to slide on the sliding track, thereby pushing the filter chamber structural plates 3 to slide toward the position of the fixed top plate. Finally, the movable top plate 23 pushes the filter chamber structural plates 3 together, connecting them and maintaining a certain pressure. During this process, the push cart 5 returns to its original position and waits for the next push. The process then returns to the feeding process of the injection and pushing chamber 1, and the steps of feeding the injection and pushing chamber 1, high-pressure pushing of the solid-liquid mixture to the high-pressure filter chamber 31, and so on are repeated several times.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure-adjustable solid-liquid separation device, characterized in that: It includes an injection and pushing bin and a plurality of filter chamber structural plates arranged side by side. A high-pressure filter chamber is formed between the filter chamber structural plates. The solid-liquid mixture in the injection and pushing bin enters the high-pressure filter chamber under high pressure. The solid matter in the solid-liquid mixture accumulates on the precision filter layer of the filter chamber structural plate. The liquid matter in the solid-liquid mixture passes through the precision filter layer of the filter chamber structural plate and the filter chamber lining plate and flows out from the liquid outlet. After multiple high-pressure pushes, the solid matter forms a mud cake in the high-pressure filter chamber.

2. According to the pressure-adjustable solid-liquid separation equipment described in claim 1, it is characterized in that: The top of the injection and pushing bin is connected to the normal pressure feed pipeline and the first high pressure air inlet pipeline. The solid-liquid mixture flows into the injection and pushing bin through the normal pressure feed pipeline under normal pressure. The high pressure gas enters the injection and pushing bin through the first high pressure air inlet pipeline and pushes the solid-liquid mixture in the injection and pushing bin to flow toward the discharge pipeline.

3. The pressure-adjustable solid-liquid separation equipment according to claim 1, characterized in that: When the injection bin is under normal pressure, open the feed valve, and the solid-liquid mixture is pumped and flows into the injection bin through the feed pipeline. When the amount of solid-liquid mixture in the injection bin reaches the set value, stop pumping the solid-liquid mixture, close the feed valve, start the first high-pressure air intake valve, and inject high-pressure gas into the injection bin through the first high-pressure air intake pipeline, so that the solid-liquid mixture in the injection bin flows into the high-pressure filter chamber from the discharge pipeline.

4. The pressure-adjustable solid-liquid separation device according to claim 1, characterized in that: Note: A pressure reducing valve is set on the push chamber.

5. The pressure-adjustable solid-liquid separation equipment according to claim 1, characterized in that: A drain valve is provided at the bottom of the injection chamber.

6. The pressure-adjustable solid-liquid separation device according to claim 1, characterized in that: A discharge valve is arranged on the discharge pipeline, a second high-pressure air intake pipeline is arranged between the discharge pipeline and the filter chamber structure plate, and a second high-pressure air intake valve is arranged between the second high-pressure air intake pipeline and the filter chamber structure plate.

7. The pressure-adjustable solid-liquid separation equipment according to claim 1, characterized in that: The filter chamber structural plate includes a filter element arranged in the middle and a frame structure arranged at the periphery. The surface of the filter element is a precision filter layer, and the precision filter layer is recessed in the frame structure. The filter chamber structural plates are arranged side by side so that the frame structures of each filter chamber structural plate are in contact and connected, and a high-pressure filter chamber is formed between the precision filter layers.

8. The pressure-adjustable solid-liquid separation equipment according to claim 1, characterized in that: The filter chamber structure plate is arranged between the fixed base and the movable top plate. The fixed base, the filter chamber structure plate and the movable top plate are all arranged on the same sliding track. The movable top plate is connected to the high-voltage driving device and is pushed by the high-voltage driving device, so that the movable top plate slides on the sliding track. The movable top plate pushes the filter chamber structure plate to slide on the sliding track toward the fixed base.

9. The pressure-adjustable solid-liquid separation device according to claim 8, characterized in that: A pushing track is arranged beside the sliding track, and a pushing device is arranged on the pushing track. The pushing device slides on the pushing track and pushes the filter chamber structure plate to slide in a direction away from the fixed base.

10. The pressure-adjustable solid-liquid separation equipment according to claim 8, characterized in that: A stripping device is arranged at the adjacent end of the sliding track, and the mud cake formed in the high-pressure filter chamber falls off the precision filter layer of the filter chamber structure plate under the action of the stripping device.

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