A direct pressure type solid-liquid separation device

Abstract

The application relates to the technical field of solid-liquid separation, and provides a direct-pressing type solid-liquid separation equipment, which comprises a pressure filtration executing module, a feeding module and a filtrate collecting module, the pressure filtration executing module comprises a pressure applying mechanism, a filter material mechanism and a driving mechanism, the pressure applying mechanism comprises a pressure applying seat and a pressure applying unit arranged on the pressure applying seat, the pressure applying unit comprises a telescopic source and a pressurizing head, the telescopic end of the telescopic source is connected with the pressurizing head; the filter material mechanism comprises a feeding disc body and a pressure bearing disc body rotatably arranged below the feeding disc body, the feeding disc body is provided with a pressure filtration cavity, the pressure filtration cavity is oppositely arranged with the pressure applying unit, the pressure bearing disc body is provided with a liquid outlet hole group and a residue discharging port, the liquid outlet hole group comprises a plurality of vertical liquid holes which are arranged in an array, the liquid outlet hole group is further covered with a filter screen above, and the driving mechanism is used for driving the pressure bearing disc body to rotate, so that the liquid outlet hole group and the residue discharging port are respectively moved to below the pressure filtration cavity. The application can take into account efficient continuous pressure filtration operation and excellent dewatering effect.

Description

Technical Field

[0001] This application relates to the technical field of solid-liquid separation, and in particular to a direct-pressure solid-liquid separation device. Background Technology

[0002] In current industrial applications, plate and frame filter presses and belt filter presses dominate, but these two types of equipment struggle to achieve a balance between dewatering efficiency and processing capacity. Plate and frame filter presses, thanks to their high-pressure filtration principle, can achieve relatively thorough solid-liquid separation, producing filter cake products with relatively low moisture content. However, their core drawback lies in their intermittent operation mode. From material loading, filter plate compaction, high-pressure holding to pressure release, filter cake removal, and filter cloth cleaning, each work cycle requires multiple steps. The auxiliary processes are time-consuming and cannot be reduced, severely limiting the effective throughput per unit time.

[0003] In contrast, belt filter presses achieve uninterrupted material feeding and output through the continuous operation of the filter belt, significantly improving throughput and production efficiency. However, their dewatering mechanism mainly relies on the tension of the filter belt and the mechanical squeezing of multiple sets of pressing rollers, resulting in relatively limited dewatering pressure. This makes it difficult to effectively remove bound water from the material, and the final filter cake moisture content often fails to meet treatment standards. This technological status quo leads to insufficient adaptability of existing equipment when facing complex material characteristics or high-standard dewatering requirements. Although the industry continues to explore improvement paths such as optimizing high-pressure diaphragm filter plates and modifying filter belt materials, the bottleneck of the difficulty in achieving both continuous high efficiency and deep dewatering has not yet been fundamentally overcome. There is an urgent need to develop solid-liquid separation equipment that combines continuous high efficiency with deep dewatering capabilities. Utility Model Content

[0004] In order to achieve both efficient continuous pressure filtration and excellent dewatering effect, and to overcome the shortcomings of insufficient dewatering capacity of current continuous equipment and low efficiency of intermittent equipment, this application provides a direct pressure solid-liquid separation device.

[0005] This application provides a direct-pressure solid-liquid separation device, which adopts the following technical solution: A direct-pressure solid-liquid separation device, comprising: frame; The pressure filtration execution module includes a pressure applying mechanism, a filter media mechanism, and a driving mechanism. The pressure applying mechanism includes a pressure applying base and a pressure applying unit disposed on the pressure applying base. The pressure applying unit includes a telescopic source and a pressure head, with the telescopic end of the telescopic source connected to the pressure head. The filter media mechanism includes a feed disc and a pressure bearing disc rotatably disposed below the feed disc. The feed disc is provided with a filter pressing chamber, which is disposed opposite to the pressure applying unit. The pressure bearing disc is provided with a liquid outlet group and a slag discharge port. The liquid outlet group includes multiple vertical liquid holes arranged in an array, and a filter screen is also covered above the liquid outlet group. The driving mechanism is used to drive the pressure bearing disc to rotate, so that the liquid outlet group and the slag discharge port move to the bottom of the filter pressing chamber, respectively. The feeding module includes a feeding bin, a conveying device, and a feeding pipe. The conveying device is connected between the feeding bin and the feeding pipe. One end of the feeding pipe is connected to the filter press chamber. The conveying device is used to drive the material in the feeding bin to move into the feeding pipe. The filtrate collection module includes a collection tank, which is connected to the filtrate outlet group.

[0006] By adopting the above technical solution, during operation, the feeding module transports the material in the feeding hopper to the filter press chamber via the feeding pipe through the feeding device; the drive mechanism of the filter press execution module drives the pressure plate to rotate, causing the liquid outlet group or slag discharge port to move to the bottom of the filter press chamber; the telescopic source of the pressure application unit pushes the pressure head to apply pressure to the material in the filter press chamber, realizing solid-liquid separation; the filtrate enters the collection tank of the filtrate collection module through the liquid outlet group; then the pressure plate is rotated to make the slag discharge port rotate to the bottom of the filter press chamber, so that the solid residue generated after filter press is discharged through the slag discharge port. The whole process is continuous. This achieves continuous and efficient operation of the direct pressure solid-liquid separation equipment, which can simultaneously achieve deep dewatering and high processing efficiency, overcoming the shortcomings of low efficiency of intermittent operation of traditional plate and frame filter presses and insufficient dewatering pressure of belt filter presses, and improving the overall performance and adaptability of the equipment.

[0007] Optionally, multiple filter press chambers are spaced apart around the axis of the feed disc, and the multiple filter press chambers are interconnected. Multiple pressure application units are provided corresponding to the filter press chambers. Multiple sets of liquid outlet holes are arranged at intervals around the axis of the pressure plate, and each set of liquid outlet holes corresponds to a filter press chamber. A slag discharge port is provided between two adjacent sets of liquid outlet holes.

[0008] By adopting the above technical solution, multiple filter press chambers simultaneously receive materials during operation. The rotation of the pressure plate aligns the liquid outlet groups or slag discharge ports below each filter press chamber in sequence. Each pressurizing unit synchronously pressurizes each filter press chamber, and the filtrate flows out from multiple liquid outlet groups, while the residue is discharged centrally at the slag discharge port, achieving efficient and continuous solid-liquid separation circulation. This enables multi-station parallel operation and reduces intermittent time.

[0009] Optionally, the filtrate collection module further includes a secondary collection cylinder, a main collection cylinder, and a guide pipe, wherein both the secondary collection cylinder and the main collection cylinder are connected to the bottom of the pressure plate. Multiple liquid collecting auxiliary cylinders are arranged around the axis of the pressure plate body. Each liquid collecting auxiliary cylinder is arranged in a one-to-one correspondence with the liquid outlet hole group and is connected to the corresponding liquid outlet hole group. The cross-sectional area of ​​the inner circle of the liquid collecting auxiliary cylinder completely covers all the vertical liquid holes in a liquid outlet hole group. The main liquid collecting cylinder is located in the middle of the multiple auxiliary liquid collecting cylinders, and each of the auxiliary liquid collecting cylinders is connected to the main liquid collecting cylinder. One end of the liquid guiding pipe is connected to the main liquid collecting cylinder, and the other end is connected to the liquid collecting tank.

[0010] By adopting the above technical solution, during operation, the filtrate flows from the outlet group into the corresponding secondary collection cylinder, then collects in the main collection cylinder, and is then guided into the collection tank through the guide pipe. The secondary collection cylinder corresponds one-to-one with the outlet group, ensuring directional flow of the filtrate. The inner ring of the secondary collection cylinder completely covers the outlet group, ensuring that all filtrate is collected. The central position of the main collection cylinder facilitates centralized management, and the filtrate collection is smooth and unobstructed throughout the process. Through the coordinated design of the secondary and main collection cylinders, the collection and flow path of the filtrate is optimized, the pipeline layout is simplified, and the equipment complexity is reduced.

[0011] Optionally, the frame is provided with a slag discharge port, which is correspondingly provided with the pressure plate, and a slag discharge device is provided below the slag discharge port.

[0012] By adopting the above technical solution, during operation, the pressure plate rotates to align the slag discharge port with the slag unloading port. The residue falls into the slag unloading port under gravity or pressure, and the slag removal device below removes the residue. This achieves automated and rapid removal of residue, reduces manual intervention, improves equipment safety and hygiene, and avoids the impact of residue accumulation on equipment operation, ensuring the stability of continuous production.

[0013] Optionally, the bottom of the pressure plate is also connected to a plurality of pipe-laying clamps, and at least one of the pipe-laying clamps is located near the edge of the pressure plate.

[0014] By adopting the above technical solution, the pipe clamp secures the liquid guide pipe or other accessories to the bottom of the pressure plate. As the pressure plate rotates, the clamp keeps the pipe in a fixed position, preventing tangling or falling off, ensuring the normal operation of the filtrate collection module, and not interfering with the normal discharge of filter residue.

[0015] Optionally, a connecting rotating ring is fitted and fixedly connected to the outer sleeve of the pressure plate body. A connecting retaining ring is integrally formed on the top of the connecting rotating ring. An installation ring groove is provided on the outer wall of the feed plate body for the connecting retaining ring to be accommodated. The connecting retaining ring is rotatably connected to the feed plate body. The driving mechanism includes a driving source, a transmission gear ring, and a driving gear. The transmission gear ring is sleeved outside the connecting rotating ring, and the transmission gear ring and the driving gear mesh with each other. The driving source is used to drive the driving gear to rotate.

[0016] By adopting the above technical solution and the gear transmission design connecting the rotating ring and the drive mechanism, the pressure plate body can rotate smoothly and accurately, reducing friction and energy consumption, improving the reliability and efficiency of rotation control, and at the same time, the structure is compact and easy to manufacture and maintain.

[0017] Optionally, the pressure head includes a pressure column and a pressure plate connected to one end of the pressure column, and a flexible sealing gasket is provided at one end of the pressure plate.

[0018] By adopting the above technical solution, the pressure head uses a pressure column and a pressure plate with a flexible sealing gasket, which enhances the sealing performance and pressure distribution uniformity during pressurization, reduces filtrate leakage, and improves the dewatering effect. At the same time, the flexible gasket reduces equipment wear, extends service life, and makes solid-liquid separation more thorough.

[0019] Optionally, the feed hopper is located at a height higher than the feed pipe, and the feed pipe is located near the top of the filter press chamber.

[0020] By adopting the above technical solutions, the high-level design of the feeding hopper and the arrangement of the feeding pipe close to the top of the filter press chamber utilize gravity-assisted feeding, reducing the energy consumption of the conveying device, ensuring smooth material transport, avoiding blockages, and improving feeding efficiency.

[0021] Optionally, the main liquid collecting cylinder is located at a lower height than the secondary liquid collecting cylinder.

[0022] By adopting the above technical solution, during operation, the filtrate flows from the secondary collection cylinder to the lower main collection cylinder by gravity, and then is introduced into the collection tank through the liquid guide pipe; the high elevation difference ensures the continuity of flow and requires no additional power.

[0023] Optionally, the bottom of the collection tank is connected to a drain pipe, and the drain pipe can be opened and closed.

[0024] By adopting the above technical solution, the opening and closing of the drain pipe facilitates the periodic discharge and control of the filtrate, avoids overfilling or leakage of the collection tank, improves operational convenience and safety, and facilitates maintenance and cleaning.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. This application realizes the automatic circulation and seamless connection of the filter press and unloading process. While ensuring the deep dewatering effect under high pressure filter press, the equipment continuously discharges slag by rotating the pressure plate to switch the work station, which combines the high dewatering rate of intermittent equipment and the high efficiency of continuous equipment. 2. This application achieves multi-station parallel operation by setting up multiple parallel filter chambers and corresponding liquid discharge and slag discharge stations, which greatly increases the material processing capacity per unit time, eliminates the intermittent waiting time of single-chamber operation, and doubles the filter press efficiency. 3. By setting a flexible sealing gasket on the pressure head, this application effectively improves the sealing performance of the filter press chamber under high pressure, prevents filtrate leakage, ensures that the pressure is applied evenly to the material, thereby significantly improving the dewatering effect and reducing equipment wear. Attached Figure Description

[0026] Figure 1 This is a cross-sectional structural schematic diagram of the direct-pressure solid-liquid separation device according to Embodiment 1 of this application; Figure 2 This is a schematic diagram of the pressure filtration execution module in Embodiment 1 of this application; Figure 3 This is a cross-sectional view of the filter media structure in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the pressure plate body in Embodiment 1 of this application; Explanation of reference numerals in the attached drawings: 1. Frame; 11. Slag discharge port; 12. Support rod; 2. Pressure applying mechanism; 21. Pressure applying seat; 22. Telescopic source; 23. Pressure head; 231. Pressure column; 232. Pressure plate; 233. Flexible sealing gasket; 3. Filter media mechanism; 31. Feeding disc; 311. Filter press chamber; 312. Mounting ring groove; 32. Pressure bearing disc; 321. Liquid outlet hole group; 322. Slag discharge port; 33. Connecting rotating ring; 331. Connecting retaining ring; 34. Filter screen; 4. Drive mechanism; 41. Drive source; 42. Transmission gear ring; 43. Drive gear; 5. Feeding module; 51. Feeding bin; 52. Conveying device; 53. Feeding pipe; 6. Filtrate collection module; 61. Collection tank; 62. Auxiliary collection cylinder; 63. Main collection cylinder; 64. Liquid guide pipe; 7. Residue removal device; 8. Pipe clamps. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail.

[0028] The direct-pressure solid-liquid separation equipment provided in this application includes a frame 1, a pressure filtration execution module, a feeding module 5, and a filtrate collection module 6. The pressure filtration execution module and the feeding module 5 are both mounted on the frame 1. Through the cooperation of each module, the functions of feeding, pressure filtration, and filtrate collection during the solid-liquid separation process are realized, achieving the beneficial effect of both efficient continuous pressure filtration operation and excellent dewatering effect.

[0029] Reference Figure 1 and Figure 2 The pressure filtration execution module includes a pressure applying mechanism 2, a filter media mechanism 3, and a drive mechanism 4. The pressure applying mechanism 2 includes a pressure applying seat 21 and a pressure applying unit disposed on the pressure applying seat 21. The pressure applying seat 21 is fixed above the frame 1 by a bracket, and is specifically configured as a cylinder. In other embodiments, the pressure applying seat 21 can be lifted and mounted onto the frame 1 via a lifting mechanism, or rotatably connected to the frame 1 via a rotating mechanism, allowing for flexible adjustment of the position of the pressure applying seat 21.

[0030] Reference Figure 2 The pressure unit includes a telescopic source 22 and a pressure head 23. One end of the telescopic source 22 is fixed to the pressure base 21, and the telescopic end of the telescopic source 22 is connected to the pressure head 23. The telescopic source 22 can be a hydraulic cylinder or an electric push rod, etc. The pressure head 23 includes a pressure column 231 and a pressure plate 232 connected to one end of the pressure column 231. The pressure plate 232 is specifically configured as a circular plate, and a circular flexible sealing gasket 233 is glued and fixed to one end of the pressure plate 232. The flexible sealing gasket 233 can be made of rubber and can play a sealing role during pressurization to prevent material leakage. The pressure column 231 and the pressure plate 232 can be an integrally formed structure or connected by welding or other methods.

[0031] Reference Figure 1 and Figure 3The filter media mechanism 3 includes a feed disc 31 and a pressure plate 32 rotatably disposed below the feed disc 31. Multiple support rods 12 are fixedly fixed at intervals around the feed disc 31, and the support rods 12 are fixedly connected to the frame 1. A filter pressing chamber 311 is formed on the feed disc 31, which is a cylindrical cavity open at both ends, and is positioned opposite to the pressure application unit. A connecting rotating ring 33 is fitted and welded onto the pressure plate 32. A connecting retaining ring 331 is integrally formed on the top of the connecting rotating ring 33. An installation ring groove 312 for accommodating the connecting retaining ring 331 is formed on the outer wall of the feed disc 31; the connecting retaining ring 331 engages with the installation ring groove 312 and is rotatably connected to the feed disc 31, allowing the pressure plate 32 to rotate relative to the feed disc 31.

[0032] Reference Figure 3 and Figure 4 The pressure plate 32 has a liquid outlet group 321 and a slag discharge port 322. The driving mechanism 4 drives the pressure plate 32 to rotate, causing the liquid outlet group 321 and the slag discharge port 322 to move below the filter press chamber 311. During the filtration stage, the pressure plate 32 rotates, causing the liquid outlet group 321 to move below the filter press chamber 311 and be positioned opposite to it. The feed plate 31 and the pressure plate 32 can be made of metal, such as stainless steel, which has good corrosion resistance and strength. Multiple filter press chambers 311 are spaced apart around the axis of the feed plate 31, and these multiple filter press chambers 311 are interconnected through internal flow channels opened in the pressure plate 32, allowing for simultaneous filtration of materials at multiple locations and improving processing efficiency. Multiple pressure-applying units are provided corresponding to the filter press chambers 311. Multiple sets of outlet hole groups 321 are spaced apart along the axis of the pressure plate 32, with each outlet hole group 321 corresponding to a filter press chamber 311. A slag discharge port 322 is provided between each adjacent outlet hole group 321. Each outlet hole group 321 includes multiple vertically arranged liquid holes to facilitate filtrate discharge. A circular filter screen 34 is also covered above each outlet hole group 321, embedded and fixed to the pressure plate 32 to prevent filter residue from being discharged from the vertical liquid holes.

[0033] In other embodiments, only one pressure unit, one filter chamber 311, one set of liquid outlet holes 321 and one slag discharge port 322 may be provided; correspondingly, the connection position of the feed plate 31 and the pressure plate 32 is changed, and the rotation axis of the pressure plate 32 is moved between the liquid outlet holes 321 and the slag discharge port 322.

[0034] Reference Figure 1 and Figure 4The frame 1 has a slag discharge port 11, which is correspondingly positioned to the pressure plate 32. A slag discharge device 7, which can be a belt conveyor, is located below the slag discharge port 11. The area enclosed by the inner ring of the slag discharge port 11 is larger than the cross-sectional area of ​​the pressure plate 32, ensuring that all filter slag from the slag discharge ports 322 can fall onto the slag discharge device 7. In other embodiments, a receiving box can be used instead of the slag discharge device 7.

[0035] Reference Figure 1 and Figure 2 The filtrate collection module 6 includes a secondary collection cylinder 62, a main collection cylinder 63, a guide pipe 64, and a collection tank 61. The secondary collection cylinder 62 and the main collection cylinder 63 are both sealed at the bottom and are sealed to the bottom of the pressure plate 32. The bottom of the collection tank 61 is connected to a drain pipe, which is operable and can be controlled by a valve. (Refer to...) Figure 2 and Figure 3 Multiple secondary collection cylinders 62 are arranged around the axis of the pressure plate 32. Each secondary collection cylinder 62 corresponds to and is connected to a corresponding group of outlet holes 321. The cross-sectional area of ​​the inner ring of the secondary collection cylinder 62 completely covers all the vertical liquid holes in a group of outlet holes 321, ensuring that the filtrate can flow smoothly into the secondary collection cylinder 62. The main collection cylinder 63 is located in the middle of the multiple secondary collection cylinders 62. The height of the main collection cylinder 63 is lower than that of the secondary collection cylinders 62. The main collection cylinder 63 is connected to the secondary collection cylinders 62 through a pipe, and the filtrate can flow into the main collection cylinder 63 by gravity. One end of the liquid guide pipe 64 is connected to the main collection cylinder 63, and the other end passes through the frame 1 and is connected to the collection tank 61. Multiple pipe clamps 8 are also fixed at the bottom of the pressure plate 32, and at least one pipe clamp 8 is set close to the edge of the pressure plate 32. In this embodiment, two pipe clamps 8 are fixed at intervals at the bottom of the pressure plate 32. The pipe clamps 8 are strip-shaped clamps with a pipe clamping groove at the bottom. The liquid guide pipe 64 passes through the pipe clamping groove.

[0036] Reference Figure 1 and Figure 2 The drive mechanism 4 includes a drive source 41, a transmission gear ring 42, and a drive gear 43. The transmission gear ring 42 is sleeved and fixed outside the connecting rotating ring 33, and the transmission gear ring 42 and the drive gear 43 mesh with each other. The drive source 41 is fixed on the frame 1 by a support. The drive source 41 can be a servo motor. The output shaft of the drive source 41 is coaxially fixed with the drive gear 43. The rotation of the drive source 41 drives the drive gear 43 to rotate, which in turn drives the pressure plate 32 to rotate through the transmission gear ring 42, thereby realizing the switching of the pressure plate 32 between the filter pressing state and the unloading state.

[0037] Reference Figure 1The feeding module 5 includes a feeding bin 51, a conveying device 52, and a feeding pipe 53. The feeding bin 51 has an opening at the top. The conveying device 52 connects the feeding bin 51 and the feeding pipe 53. One end of the feeding pipe 53 is connected to the filter press chamber 311. The conveying device 52 drives the material in the feeding bin 51 to move into the feeding pipe 53. The feeding bin 51 is positioned higher than the feeding pipe 53, and the feeding pipe 53 is located near the top of the filter press chamber 311, thus utilizing the gravity of the material to assist feeding. The conveying device 52 can be a screw conveyor. The conveying pipe of the conveying device 52 is connected to the feeding pipe 53 to transport the material to the feeding pipe 53.

[0038] The implementation principle of this embodiment is as follows: the feeding module 5 continuously supplies material to the filter press chamber 311. The filter press execution module drives the pressure head 23 to filter the material through the telescopic source 22. The driving mechanism 4 drives the pressure plate 32 to rotate, causing the filtrate to be discharged from the liquid outlet group 321 and the filter residue to be discharged from the residue discharge port 322. The filtrate collection module 6 can efficiently collect the filtrate. The entire process achieves continuous and efficient solid-liquid separation. The residue removal device 7 transports the discharged filter residue away from the filter material mechanism 3. At the same time, the design of the flexible sealing gasket 233 of the pressure head 23 further improves the performance and reliability of the equipment, overcomes the defects of insufficient dewatering capacity of continuous equipment and low efficiency of intermittent equipment, and has significant improvement and contribution.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A direct-pressure solid-liquid separation device, characterized in that, include: Rack (1); The pressure filtration execution module includes a pressure applying mechanism (2), a filter media mechanism (3), and a drive mechanism (4). The pressure applying mechanism (2) includes a pressure applying seat (21) and a pressure applying unit disposed on the pressure applying seat (21). The pressure applying unit includes a telescopic source (22) and a pressure head (23). The telescopic end of the telescopic source (22) is connected to the pressure head (23). The filter media mechanism (3) includes a feed disc (31) and a pressure bearing disc (32) rotatably disposed below the feed disc (31). A filter press chamber (311) is provided, which is opposite to the pressure application unit. The pressure plate (32) is provided with a liquid outlet group (321) and a slag discharge port (322). The liquid outlet group (321) includes multiple vertical liquid holes arranged in an array. A filter screen (34) is also covered above the liquid outlet group (321). The driving mechanism (4) is used to drive the pressure plate (32) to rotate, so that the liquid outlet group (321) and the slag discharge port (322) move to the bottom of the filter press chamber (311). The feeding module (5) includes a feeding bin (51), a conveying device (52) and a feeding pipe (53). The conveying device (52) is connected between the feeding bin (51) and the feeding pipe (53). One end of the feeding pipe (53) is connected to the filter press chamber (311). The conveying device (52) is used to drive the material in the feeding bin (51) to move into the feeding pipe (53). The filtrate collection module (6) includes a collection tank (61) which is connected to the outlet hole group (321).

2. The direct-pressure solid-liquid separation device according to claim 1, characterized in that, The filter press chambers (311) are arranged in multiple ways around the axis of the feed disc (31), and the multiple filter press chambers (311) are interconnected. The pressure application units are arranged in multiple ways corresponding to the filter press chambers (311). Multiple sets of the liquid outlet hole groups (321) are arranged at intervals around the axis of the pressure plate body (32), and the liquid outlet hole groups (321) are arranged in a one-to-one correspondence with the filter press chamber (311). The slag discharge port (322) is provided between two adjacent liquid outlet hole groups (321).

3. The direct-pressure solid-liquid separation device according to claim 2, characterized in that, The filtrate collection module (6) also includes a secondary collection cylinder (62), a main collection cylinder (63), and a guide pipe (64). The secondary collection cylinder (62) and the main collection cylinder (63) are both connected to the bottom of the pressure plate (32). Multiple liquid collecting auxiliary cylinders (62) are arranged around the axis of the pressure plate body (32). Each liquid collecting auxiliary cylinder (62) is arranged in a one-to-one correspondence with the liquid outlet hole group (321) and is connected to the corresponding liquid outlet hole group (321). The cross-sectional area of ​​the inner circle of the liquid collecting auxiliary cylinder (62) completely covers all the vertical liquid holes in a liquid outlet hole group (321). The main collection cylinder (63) is located in the middle of the multiple secondary collection cylinders (62), and each of the secondary collection cylinders (62) is connected to the main collection cylinder (63). One end of the liquid guide pipe (64) is connected to the main collection cylinder (63), and the other end is connected to the collection tank (61).

4. The direct-pressure solid-liquid separation device according to claim 1, characterized in that, The frame (1) is provided with a slag discharge port (11), which is corresponding to the pressure plate (32), and a slag material conveying device (7) is provided below the slag discharge port (11).

5. A direct-pressure solid-liquid separation device according to claim 3, characterized in that, The bottom of the pressure plate (32) is also connected to a plurality of pipe clamps (8), and at least one of the pipe clamps (8) is set near the edge of the pressure plate (32).

6. The direct-pressure solid-liquid separation device according to claim 1, characterized in that, The pressure plate body (32) is fitted with and fixedly connected to a connecting ring (33). The top of the connecting ring (33) is integrally formed with a connecting retaining ring (331). The outer wall of the feed plate body (31) is provided with an installation ring groove (312) for the connecting retaining ring (331) to be accommodated. The connecting retaining ring (331) is rotatably connected to the feed plate body (31). The drive mechanism (4) includes a drive source (41), a transmission gear ring (42) and a drive gear (43). The transmission gear ring (42) is sleeved on the outside of the connecting ring (33). The transmission gear ring (42) and the drive gear (43) mesh with each other. The drive source (41) is used to drive the drive gear (43) to rotate.

7. The direct-pressure solid-liquid separation device according to claim 1, characterized in that, The pressure head (23) includes a pressure column (231) and a pressure plate (232) connected to one end of the pressure column (231). A flexible sealing gasket (233) is provided at one end of the pressure plate (232).

8. The direct-pressure solid-liquid separation device according to claim 1, characterized in that, The feed bin (51) is located at a height higher than the feed pipe (53), and the feed pipe (53) is located near the top of the filter press chamber (311).

9. A direct-pressure solid-liquid separation device according to claim 3, characterized in that, The height of the main liquid collecting cylinder (63) is lower than that of the secondary liquid collecting cylinder (62).

10. A direct-pressure solid-liquid separation device according to claim 1, characterized in that, The bottom of the liquid collection tank (61) is connected to a drain pipe, and the drain pipe can be opened and closed.

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