An automated filter press unit for dewatering gasified black sludge.

Abstract

This utility model relates to an automated filter press device for dewatering gasified black sludge, comprising a water tank, positioning boxes placed above both ends of the water tank, and a filter tank between the two positioning boxes. The filter tanks are arranged linearly in several groups. Connecting rods are installed on both sides of the two positioning boxes, and a cleaning box is slidably mounted along the connecting rods. The cleaning box is used to backwash the filter tank to assist in sludge dewatering. A first frame and a second frame are respectively fitted around the two positioning boxes. A pump pipe is installed at the center of the first frame. The core filter tank adopts a reinforced frame structure and is combined with a tension sealing strip, which greatly enhances the overall rigidity and creep resistance of the filter plate. This can fundamentally prevent problems such as poor sealing of the filter chamber and sludge leakage caused by filter plate deformation. Multiple pressure sleeves set at the corners of the top support plate work together with the water supply pipe to form a multi-point synchronous pressure transmission system, effectively overcoming the problem of uneven pressure distribution caused by a single hydraulic cylinder drive.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and in particular to an automated filter press for dewatering gasified black mud. Background Technology

[0002] Gasification black sludge dewatering is a process used in industrial fields such as coal chemical, petroleum coke gasification, or biomass gasification to remove moisture from solid waste residue (black sludge) generated by gasification units. Automated pressure filter is a key piece of equipment that integrates mechanical dewatering, intelligent control, and continuous operation functions. It is specifically designed to treat high-moisture-content black sludge generated by gasification processes. Its core is to achieve efficient dewatering and solid-liquid separation of black sludge through programmed pressure filtration.

[0003] Traditional automated filter presses used for dewatering gasified black sludge have significant structural defects. Their filter plate assemblies are designed as homogeneous flat plates, which are prone to creep deformation under long-term high pressure, leading to poor sealing of the filter chamber and leakage. The pressure transmission mechanism is mostly driven by a single hydraulic cylinder, resulting in uneven pressure distribution and significant differences in pressure in different areas of the filter cake. The filter cloth tensioning system uses simple mechanical fixing, which is prone to wrinkling when pressure fluctuates, causing local filtration area loss. These structural defects together result in low dewatering efficiency, high moisture content in the filter cake, and poor stability. Utility Model Content

[0004] The technical problem this invention aims to solve is that the fundamental defect of traditional filter plates is insufficient structural strength, leading to sealing failure. The deformation of the filter plate directly changes the design gap of the filter chamber, which makes the problem of uneven pressure distribution caused by the simple pressure transmission structure more prominent, because uneven pressure will further aggravate the deformation of the filter plate. At the same time, the combined effect of filter plate deformation and uneven pressure amplifies the impact of the simple filter cloth fixing structure on the loss of filtration area. The filter cloth produces uncontrollable wrinkles under abnormal stress, the effective filtration area drops sharply, and ultimately the dehydration performance of the entire device deteriorates significantly.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An automated filter press device for dewatering gasified black mud includes a water tank, positioning boxes placed above both ends of the water tank, and a filter box between the two sets of positioning boxes. The filter boxes are arranged in a linear arrangement. Connecting rods are installed on both sides of the two sets of positioning boxes. A cleaning box is slidably installed along the connecting rods. The cleaning box is used to backwash the filter box to assist in desludge removal. A first frame and a second frame are respectively fitted on the outside of the two sets of positioning boxes. An inlet pump pipe is installed in the center of the first frame.

[0006] The beneficial effects of this utility model are as follows: By adopting a reinforced frame structure for the core filter tank and combining it with a tension sealing strip, the overall rigidity and creep resistance of the filter plate are greatly enhanced. This can prevent problems such as poor sealing of the filter chamber and slurry leakage caused by filter plate deformation from the root, ensuring stable operation of the dewatering process. Multiple pressure sleeves set at the corners of the top support plate work together with the water supply pipe to form a multi-point synchronous pressure transmission system, which effectively overcomes the problem of uneven pressure distribution caused by a single hydraulic cylinder drive. This makes the filter cake under uniform pressure in all areas, resulting in a filter cake with lower moisture content and more uniform texture, and significantly improving dewatering efficiency.

[0007] Furthermore, a guide rail is fixed to the upper end of the connecting rod. The guide rail is used for sliding conveying of the cleaning box. A through groove is opened through the connecting rod. Limit blocks are installed at both ends of the guide rail. A hydraulic rod is provided in the center of one set of positioning boxes. A hydraulic cylinder is installed at one end of the hydraulic rod. A top support plate is installed at the other end of the hydraulic rod. Pressure sleeves are provided at all four corners of the top support plate. The top support plate abuts against the water filter box. A drain port is opened at the bottom of the water tank. A positioning frame is provided between the connecting rod and the first set of frames.

[0008] Furthermore, the water filter tank includes interlocking reinforcing frames, a tension sealing strip at the junction of the two sets of reinforcing frames, sleeves at the corners of the two sets of reinforcing frames, a sealing sleeve fixed to the top of the two sets of reinforcing frames, several sets of injection pipes arranged in an array inside the sealing sleeve, a locking sleeve and a slider fixed to both sides of the two sets of reinforcing frames, the slider passing through the through groove, a pressure relief plate and an outer covering sleeve symmetrically provided at the bottom of the two sets of reinforcing frames, and a diaphragm integrated in the middle of the two sets of reinforcing frames.

[0009] Furthermore, several sets of drainage holes are distributed at the bottom of the pressure relief plate, and a rotating rod is provided between the pressure relief plate and the reinforcing frame. The rotating rod has a built-in return spring, a pin is fixed to one end of the rotating rod, and a sleeve that matches the pin and a pressure sensor built into the sleeve are provided at the other end of the rotating rod.

[0010] Furthermore, the cleaning tank is equipped with a water bladder and a drainage pipe at the top. Push rods are connected to the corners of the cleaning tank. A cylinder is installed at the top of the push rod, and a pressure block is integrated at the bottom of the push rod. The pressure block is fitted with a sliding sleeve and a camera at the end. Several sets of rollers are arranged along the bottom edge of the sliding sleeve. The rollers are equipped with a roller and an externally electrically connected lithium battery pack. The cylinder drives the push rod to move the cleaning tank up and down to contact the water filter tank. Furthermore, both ends of the cleaning tank are equipped with swing frames. A drive shaft and a drive end are provided between the swing frames and the cleaning tank. The drive end controls the drive shaft to drive the swing frames to swing. There are two sets of swing frames. A connecting shaft and an external motor unit are provided between the two sets of swing frames. The motor unit drives the connecting shaft to drive the two sets of swing frames to swing back and forth. An extension column is fixed to the end of the swing frame away from the connecting shaft. A connecting plate is installed in the extension direction of the extension column. A blade is provided on the side of the connecting plate. A vibration end and an internal vibration sensor are installed on the connecting plate.

[0011] Furthermore, the cleaning tank has compartments on both sides that are connected to the water bladder. A pressure pump is installed on the top of the compartments, and several sets of rinsing pipes are distributed at the bottom of the compartments.

[0012] Furthermore, the positioning box is equipped with an integrated box, which contains a water pressure sensor and a flashing light electrically connected to the top. Water supply pipes are connected to the four sides of the integrated box near the corners. The water supply pipes pass through the filter water tank to supply liquid. The water supply pipes are connected to the pressure sleeve. The other end of the water supply pipes is connected to the pump pipe. The end of the pump pipe is equipped with an access ring and an external electrical control box.

[0013] The beneficial effects of adopting the above-mentioned further solution are as follows: Through the pressure relief plate design, the built-in reset spring, insert, and pressure sensor can sense and adaptively adjust the tension of the filter cloth in real time. When the pressure fluctuates, the structure can automatically compensate to prevent the filter cloth from producing uncontrollable wrinkles, ensuring the stability of the effective filtration area. It also has an overpressure protection function and is equipped with a movable cleaning box that integrates a water bladder, rinsing pipe, scraper, and vibration end. It can realize multiple cleaning modes such as backwashing, physical scraping, and vibration-assisted desludge removal of the filter cloth, thereby improving the cleaning effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the water tank of this utility model; Figure 3 This is a schematic diagram of the guide rail of this utility model; Figure 4 This is a schematic diagram of the water filter tank of this utility model; Figure 5 This is a schematic diagram of the water filter tank of this utility model from another angle; Figure 6 This is a schematic diagram of the cleaning box of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Water supply tank; 2. Positioning box; 3. Filter tank; 4. Cleaning box; 5. Pump connection pipe; 101. Connecting rod; 102. Drain outlet; 103. First frame; 104. Second frame; 105. Hydraulic cylinder; 106. Positioning frame; 107. Through slot; 108. Guide rail; 109. Limiting block; 110. Top support plate; 111. Pressure sleeve; 112. Hydraulic rod; 301. Reinforcing frame; 302. Locking sleeve; 303. Sliding block; 304. Diaphragm; 305. Sleeve; 306. Sealing sleeve; 307. Filling pipe; 308. Covering sleeve; 309. Compression sleeve; 310. Insert post; 311. Drain hole; 312. Tensioner 313. Sealing strip; 314. Pressure relief plate; 405. Rotating rod; 406. Water bladder; 407. Drainage pipe; 408. Cylinder; 409. Push rod; 400. Pressure bearing block; 401. Camera; 402. Sliding sleeve; 403. Lithium battery pack; 400. Roller; 410. Swing frame; 411. Connecting shaft; 412. Extension column; 413. Connecting plate; 414. Shovel blade; 415. Vibrating end; 416. Drive shaft; 417. Drive end; 418. Divider box; 419. Pressure pump; 420. Flushing pipe; 501. Integrated box; 502. Water supply pipe; 503. Flashing light; 504. Access ring; 505. Electrical control box. Detailed Implementation

[0016] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0017] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0018] Example 1; as Figures 1-5As shown, an automated filter press device for dewatering gasified black sludge includes core components such as a water tank 1, a positioning box 2, a filter box 3, a cleaning box 4, and a pump inlet pipe 5. Two sets of positioning boxes 2 are respectively fitted with a first frame 103 and a second frame 104, and are structurally connected by a connecting rod 101. A positioning frame 106 is provided between the connecting rod 101 and the first frame 103 to ensure the overall structural stability. The filter boxes 3 are arranged linearly between the two sets of positioning boxes 2. A through groove 107 is provided through the connecting rod 101, and the sliders 303 fixed to both sides of the filter boxes 3 can move precisely along the through groove 107.

[0019] During operation, the hydraulic cylinder 105 drives the hydraulic rod 112 to push the top support plate 110 forward. Multiple pressure sleeves 111 distributed around the corners of the top support plate 110 press each set of filter tanks 3 together to form a sealed filter chamber. The pump pipe 5 is connected to inject gasified black mud into the filter tank 3 through the water supply pipe 502. The material enters the filter chamber evenly through the filling pipe 307 in the sealing sleeve 306. Under pressure, the water is discharged through the drain hole 311 at the bottom of the pressure relief plate 313 and then discharged uniformly through the drain outlet 102 after entering the water supply tank 1. The diaphragm 304 expands towards the center under pressure, applying uniform mechanical pressure to the black mud to ensure the dewatering effect. Limit blocks 109 are installed at both ends of the guide rail 108 at the upper end of the connecting rod 101 to effectively control the movement range of the cleaning tank 4 and prevent overtravel.

[0020] Example 2: Please refer to Figure 1 - Figure 6 Based on Embodiment 1, an intelligent monitoring and automatic cleaning system is added. The cleaning tank 4 is equipped with a water bladder 401, which is connected to an external water source through a drainage pipe 402. The cleaning tank 4 is equipped with a compartment 418 on both sides that communicates with the water bladder 401. The bottom of the compartment 418 is equipped with multiple sets of rinsing pipes 420. The cleaning tank 4 is equipped with swing frames 410 at both ends, which are driven by a drive shaft 416 and a drive end 417 to achieve swing operation. A connecting shaft 411 is provided between the two sets of swing frames 410 to achieve synchronous movement. The end of the swing frame 410 is connected to a connecting plate 413 with a shovel blade 414 through an extension column 412. A vibrating end 415 is installed on the connecting plate 413. Push rods 404 are connected to all four corners of the cleaning tank 4. A pressure block 405 is integrated at the bottom of the push rod 404. The pressure block 405 is fitted with a sliding sleeve 407 and a camera 406 at the end, which can monitor the cleaning process in real time.

[0021] During operation, after the dehydration process is completed, the hydraulic rod 112 retracts, the top support plate 110 moves back, and the rotating rod 314 between the pressure relief plate 313 and the reinforcing frame 301 automatically springs open under the action of the return spring. The insert 310 disengages from the sleeve 309, causing the pressure relief plate 313 to flip. At this time, the cleaning box 4 slides along the guide rail 108 to the designated position. The cylinder 403 drives the push rod 404 to descend, so that the blade 414 contacts the surface of the filter plate. The drive end 417 controls the swing frame 410 to swing through the drive shaft 416. At the same time, the vibrating end 415 generates high-frequency vibration, and the pressure pump 419 supplies water. Combined with the high-pressure water jet from the flushing pipe 420, the surface of the filter plate is thoroughly cleaned. The roller 409 at the bottom of the sliding sleeve 407 is equipped with a lithium battery pack 408 to provide power for movement and ensure the smooth operation of the cleaning box 4.

[0022] The above working principle can be summarized as follows: the filter chamber is sealed and opened through a hydraulic system, the pressure distribution is ensured by multi-point pressure transmission, efficient dewatering is achieved by the expansion of the diaphragm 304, and the filter cake peeling and filter cloth cleaning are completed by an intelligent cleaning system. The integrated box 501 adapted on the positioning box 2 is equipped with a flashing light 503 on the top for system status indication, and the end of the pump pipe 5 is equipped with an access ring 504 for quick connection.

[0023] Based on Embodiments 1 and 2, a pressure sensor installed in the pressure relief plate 313 monitors the filter chamber pressure in real time. When the pressure reaches a set threshold, the system automatically proceeds to the next step. A water pressure sensor in the integrated box 501 continuously monitors the water supply system pressure to ensure stable water supply. A vibration sensor in the cleaning tank 4 monitors the working status of the vibration end 415 to ensure cleaning effectiveness. The specific sensor selection is as follows: MPXM2053D is recommended for pressure sensors, which has high accuracy and stability; MS5837-30BA is recommended for water pressure sensors, which has excellent waterproof performance; and ADXL345BCCZ is recommended for vibration sensors, which supports three-axis digital output.

[0024] Specifically, the reinforcing frame 301 is recommended to be made of glass fiber reinforced polypropylene, which has excellent corrosion resistance and mechanical strength; the diaphragm 304 is recommended to be made of EPDM rubber, which has a wide temperature range and is resistant to black mud corrosion; the tensioning sealing strip 312 is made of hydrogenated nitrile rubber, which is resistant to high pressure and has a long service life; the pressure relief plate 313 is made of 316L stainless steel with a Teflon coating to effectively prevent adhesion. The cover sleeve 308 is made of wear-resistant rubber to ensure that it is not easily worn during long-term use. The electrical control box 505 has a built-in STM32F407 main controller to process data from various sensors in real time and realize intelligent system control through the CAN bus. The cooperation between the locking sleeve 302 and the sleeve 305 ensures the precise positioning of the water filter tank 3, and the unique design of the pressure block 405 effectively disperses working stress.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automated filter press device for dewatering gasified black sludge, characterized in that, It includes a water tank (1), positioning boxes (2) placed above both ends of the water tank (1), and a filter box (3) between the two sets of positioning boxes (2). The filter boxes (3) are arranged in a linear arrangement. Connecting rods (101) are installed on both sides of the two sets of positioning boxes (2). A cleaning box (4) is slidably installed along the connecting rods (101). The cleaning box (4) is used to backwash the filter box (3) to assist in desludge removal. The two sets of positioning boxes (2) are respectively fitted with a first frame (103) and a second frame (104). A pump pipe (5) is installed in the center of the first frame (103).

2. An automated filter press device for dewatering gasified black sludge according to claim 1, characterized in that, A guide rail (108) is fixed to the upper end of the connecting rod (101). The guide rail (108) is used for sliding conveying of the cleaning box (4). A through groove (107) is opened through the connecting rod (101). Limit blocks (109) are installed at both ends of the guide rail (108). A hydraulic rod (112) is provided in the center of one of the positioning boxes (2). A hydraulic cylinder (105) is installed at one end of the hydraulic rod (112). A top support plate (110) is installed at the other end of the hydraulic rod (112). Pressure sleeves (111) are provided at all four corners of the top support plate (110). The top support plate (110) abuts against the water filter box (3). A drain outlet (102) is opened at the bottom of the water tank (1). A positioning frame (106) is provided between the connecting rod (101) and the first set of frames (103).

3. An automated filter press device for dewatering gasified black sludge according to claim 2, characterized in that, The water filter tank (3) includes interlocking reinforcing frames (301), a tension sealing strip (312) is provided at the junction of the two sets of reinforcing frames (301), sleeves (305) are provided at the corners of the two sets of reinforcing frames (301), a sealing sleeve (306) is fixedly connected to the top of the two sets of reinforcing frames (301), and several sets of filling pipes (307) are arranged in an array inside the sealing sleeve (306). Locking sleeves (302) and sliders (303) are fixedly connected to both sides of the two sets of reinforcing frames (301), and the sliders (303) pass through the through groove (107). Pressure relief plates (313) and outer covering sleeves (308) are symmetrically provided at the bottom of the two sets of reinforcing frames (301), and a diaphragm (304) is integrated in the middle of the two sets of reinforcing frames (301).

4. An automated filter press device for dewatering gasified black sludge according to claim 3, characterized in that, The pressure relief plate (313) has several sets of drainage holes (311) distributed at the bottom. A rotating rod (314) is provided between the pressure relief plate (313) and the reinforcing frame (301). The rotating rod (314) has a built-in reset spring. One end of the rotating rod (314) is fixedly connected to a plug (310). The other end of the rotating rod (314) is provided with a sleeve (309) that is compatible with the plug (310) and a pressure sensor built into the sleeve (309).

5. An automated filter press device for dewatering gasified black sludge according to claim 1, characterized in that, The cleaning tank (4) is equipped with a water bladder (401) and a drainage pipe (402) at the top. Push rods (404) are connected to the corners of the cleaning tank (4). A cylinder (403) is provided at the top of the push rod (404). A pressure block (405) is integrated at the bottom of the push rod (404). A sliding sleeve (407) and a camera (406) at the end are fitted on the pressure block (405). Several sets of rollers (409) are provided along the bottom edge of the sliding sleeve (407). A roller (409) is provided inside the roller and an externally electrically connected lithium battery pack (408). The cylinder (403) drives the push rod (404) to move the cleaning tank (4) up and down to contact the filter tank (3).

6. An automated filter press device for dewatering gasified black sludge according to claim 5, characterized in that, The cleaning tank (4) is equipped with swing frames (410) at both ends. A drive shaft (416) and a drive end (417) are provided between the swing frame (410) and the cleaning tank (4). The drive end (417) controls the drive shaft (416) to drive the swing frame (410) to swing. There are two sets of swing frames (410). A connecting shaft (411) and an external motor are provided between the two sets of swing frames (410). The motor drives the connecting shaft (411) to drive the two sets of swing frames (410) to swing back and forth. An extension column (412) is fixed to one end of the swing frame (410) away from the connecting shaft (411). A connecting plate (413) is installed in the extension direction of the extension column (412). A shovel blade (414) is provided on the side of the connecting plate (413). A vibration end (415) and an internal vibration sensor are installed on the connecting plate (413).

7. An automated filter press device for dewatering gasified black sludge according to claim 5, characterized in that, The cleaning tank (4) has compartments (418) on both sides that are connected to the water bladder (401). A pressure pump (419) is provided on the top of the compartment (418), and several sets of flushing pipes (420) are distributed at the bottom of the compartment (418).

8. An automated filter press device for dewatering gasified black sludge according to claim 2, characterized in that, The positioning box (2) is fitted with an integrated box (501). The integrated box (501) has a built-in water pressure sensor and a flashing light (503) electrically connected to the top. Water supply pipes (502) are connected to the corners of the integrated box (501). The water supply pipes (502) pass through the filter water tank (3) to supply liquid. The water supply pipes (502) are connected to the pressure sleeve (111). The other end of the water supply pipes (502) is connected to the access pump pipe (5). The end of the access pump pipe (5) is equipped with an access ring (504) and an external electrical control box (505).

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