Plate-frame double-speed opening and closing mechanism for ultrahigh-pressure high-productivity filter press and use method of plate-frame double-speed opening and closing mechanism

Abstract

The invention discloses a plate-and-frame double-speed opening and closing mechanism for an ultrahigh-pressure large-capacity filter press and a use method thereof, the plate-and-frame double-speed opening and closing mechanism comprises a filter press frame, a pressure-bearing end plate and a pressurizing end plate are respectively fixed at the front end and the rear end of the filter press frame, a hydraulic system is mounted on the pressurizing end plate, and the filter press frame is connected to a pressing plate in a sliding manner; a plurality of groups of filter pressing plate frames are arranged, the two sides of each filter pressing plate frame are respectively provided with a hanging lug, the hanging lugs are connected to the filter press frame in a sliding manner, the hanging lugs of the adjacent filter pressing plate frames are connected in series through a micro-elastic rope, and the pressing plate abuts against the filter pressing plate frame at the rearmost end; the plate frame moving mechanism comprises a guide plate, a supporting plate, an opening and closing trolley, a telescopic rod, a driving assembly I and a driving assembly II, the guide plate and the supporting plate are both horizontally fixed to the filter press frame, and the opening and closing trolley slides on the guide plate. The mold opening and closing time of the plate frame of the filter press can be shortened multiply, and the production efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of filter press technology, and in particular to a plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter presses and its usage method. Background Technology

[0002] Industries such as coal mining, dyeing and finishing, papermaking, building materials, pharmaceuticals, metallurgy, and food processing generate large quantities of high-moisture materials during production. These materials require dewatering, with plate and frame filter presses being the primary dewatering equipment. Coal washing water (also known as coal slime) and high-moisture tailings require ultra-high pressure, high-capacity filter presses. This is because they meet production capacity requirements and utilize ultra-high pressure (above 16MPa) to achieve deep dewatering. Compared to ordinary filter presses (4MPa), ultra-high pressure, high-capacity filter presses are an energy-saving and environmentally friendly option. Deeply dewatered materials eliminate the need for subsequent drying, saving fuel and reducing carbon emissions. Furthermore, deeply dewatered materials used as landfill material do not experience liquefaction due to rehydration, reducing the risk of dam failure. However, during the filtration process, ultra-high pressure, high-capacity filter presses require longer pressurization and pressure holding times than ordinary filter presses, which limits their production efficiency.

[0003] A filter press consists of filter cloth, diaphragms, and filter plates, forming a filter unit (referred to as a plate and frame filter in the industry). Multiple plates and frames are arranged horizontally to form a filter press row. Its working principle and process include four steps: 1. Compacting: Driven by an opening and closing trolley, the plates and frames are arranged closely one by one along the guide rail towards one end of the filter press to form a row of filter chambers (referred to as mold closing in the industry), and then compressed horizontally under the action of a hydraulic system. 2. Feeding: High-moisture material is pumped into each filter chamber. Solid particles are trapped by the filter cloth, and water is discharged under the thrust of the pump, forming a primary filter cake. 3. Pressing: High-pressure water is injected into the water tank composed of diaphragms and metal plates. The elastic diaphragms apply high pressure to the primary filter cake, further squeezing out the water. 4. Discharging: Under the action of the hydraulic system, the filter press exits, and the opening and closing trolley moves the plates and frames one by one into the space vacated by the mold-locking hydraulic cylinder, forming a densely packed state at the other end. During the plate and frame separation process, the filter cake falls onto the conveyor belt below the filter press under gravity.

[0004] To increase the capacity of a filter press, the area and number of plates and frames must be increased. With the increase in the number of plates and frames, the time required for opening and closing the mold piece by piece via the trolley also increases significantly, reaching nearly an hour for some filter presses, severely impacting production efficiency. Currently, there is a rapid, equidistant mold opening technology for plates and frames, which involves installing elastic mechanisms between the plates and frames. After being withdrawn by a hydraulic system, the plates and frames can quickly separate at equal intervals. The problem is that this technology requires a large lateral mold opening space, nearly 30 times the space required for piece-by-piece mold opening. For large-capacity filter presses with a machine length already exceeding 10 meters, adopting this rapid, equidistant mold opening technology would necessitate increasing the machine length to nearly 30 meters. This is extremely unfavorable in terms of equipment cost, frame load-bearing design, and manufacturing process.

[0005] Based on the above-mentioned technical problems, the present invention provides a plate and frame double-speed opening and closing mechanism for ultra-high pressure and high capacity filter press and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter press and its usage method, so as to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides a plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press, comprising: A filter press frame has a pressure-bearing end plate and a pressure-applying end plate fixed at its front and rear ends, respectively. A hydraulic system is installed on the pressure-applying end plate. A pressure plate is slidably connected to the filter press frame. The pressure plate is located between the pressure-bearing end plate and the pressure-applying end plate. The hydraulic system is fixed to the pressure plate and is used to push the pressure plate to move. The filter press frame is provided in several groups, and the several groups of filter press frames are arranged in parallel between the pressure end plate and the pressure end plate. The two sides of the filter press frame are respectively equipped with hanging ears, which are slidably connected to the filter press frame. The hanging ears of adjacent filter press frames are connected in series by micro-elastic ropes. The pressure plate abuts against the last filter press frame. The plate and frame moving mechanism includes a guide plate, a support plate, an opening and closing trolley, a telescopic rod, a drive assembly I, and a drive assembly II. The guide plate and the support plate are both horizontally fixed on the filter press frame. The opening and closing trolley slides on the guide plate. The drive assembly I is in transmission cooperation with the opening and closing trolley. The telescopic rod is installed on the opening and closing trolley. The drive assembly II is installed on the support plate and is in transmission cooperation with the telescopic rod to control the extension and retraction of the telescopic rod. The telescopic rod is arranged correspondingly to the hanging lug.

[0008] According to the present invention, the hydraulic system for a high-pressure, high-capacity filter press plate and frame double-speed opening and closing mechanism includes a hydraulic cylinder and a hydraulic control system. The hydraulic cylinder is provided in several groups, and the several groups of hydraulic cylinders are fixed in parallel on the pressure end plate. The pressure plate is fixed on the output end of the hydraulic cylinder, and the hydraulic control system is connected to the hydraulic cylinder.

[0009] According to the present invention, a high-speed opening and closing mechanism for a filter press plate and frame of an ultra-high pressure and high-capacity filter press is provided, wherein the lug is provided with an insertion hole, the insertion hole is a conical structure, and the two ends of the micro-elastic rope are respectively inserted into the insertion holes of the lugs of the adjacent filter press plate and frame. The lugs are provided with locking screw holes, the locking screw holes are arranged perpendicularly to the insertion holes, and the locking screw holes are internally threaded with locking nuts, the locking nuts being used to position and fix the micro-elastic rope.

[0010] According to the present invention, the plate and frame double-speed opening and closing mechanism for ultra-high pressure and high capacity filter press includes a trolley comprising a body and wheels, the wheels being rotatably connected to the body, and the drive assembly I being used to drive the wheels to roll on the guide plate.

[0011] According to the present invention, the high-speed opening and closing mechanism for a plate and frame filter press of an ultra-high pressure and high-capacity filter press includes a drive assembly I comprising a drive toothed belt I, a drive sprocket, and a first transmission device. The drive sprocket is fixed on the vehicle body, the drive toothed belt I is mounted on the guide plate, the first transmission device is in transmission cooperation with the drive toothed belt I, and the drive sprocket meshes with the drive toothed belt I.

[0012] According to the present invention, the plate and frame double-speed opening and closing mechanism for ultra-high pressure and high capacity filter press is provided. The telescopic rod includes a drive sleeve, a push rod and a guide sleeve. The guide sleeve is fixed on the vehicle body. The push rod is horizontally slidably connected in the guide sleeve. The drive sleeve is rotatably connected to the vehicle body and threadedly connected to the push rod. The drive assembly II is in transmission cooperation with the drive sleeve.

[0013] According to the present invention, the high-speed opening and closing mechanism for a plate and frame filter press of an ultra-high pressure and high-capacity filter press includes a drive assembly II comprising a drive toothed belt II and a second transmission device. Both the drive toothed belt II and the second transmission device are mounted on the support plate. The second transmission device is in transmission cooperation with the drive toothed belt II, and the drive toothed belt II meshes with the drive sleeve.

[0014] The method of using the plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter presses includes the following steps: Step 1: Check the tightness of all connections of the filter press frame components, and confirm that the pressure end plate and the pressure-applying end plate are installed in place; check that the filter press plate frame lugs slide smoothly with the frame, and that the micro-elastic ropes are not loose or damaged; check that the guide plates and support plates in the plate frame moving mechanism are firmly fixed, that the opening and closing trolley slides smoothly without jamming, and that the telescopic rod extends and retracts flexibly; start the hydraulic system, drive component I and drive component II for no-load test run, and after confirming that each system is operating normally, reset the opening and closing trolley to the initial position, retract the telescopic rod, and return the pressure plate to the initial state close to the pressure-applying end plate; Step 2: Drive the opening and closing trolley along the guide plate to the corresponding hanging ear position using drive component I. Activate drive component II to extend the telescopic rod, ensuring precise alignment between the telescopic rod and the hanging ear of the filter press plate frame. Drive the opening and closing trolley to move in the opposite direction, using the telescopic rod to bring all the filter press plates and frames together synchronously along the frame. Adjacent plates and frames are tightly fitted using micro-elastic ropes. After the plates and frames are fully closed, retract the telescopic rod and reset the opening and closing trolley. Activate the hydraulic system to push the pressure plate towards the pressure-bearing end plate until the pressure plate abuts against the last plate and applies a preset pressure, completing the plate and frame sealing. Step 3: After the filter press operation is completed, shut off the hydraulic system pressure output and control the hydraulic system to drive the pressure plate to retract in the opposite direction to release the pressure on the plate frame; restart drive assembly I to move the opening and closing trolley to the corresponding position of the plate frame lugs, and drive assembly II controls the telescopic rod to extend and connect with the lugs; Step 4: Drive the opening and closing trolley to move at a constant speed through drive component I. With the help of the telescopic rod, the filter press plates and frames open in sequence. The plates and frames are quickly separated by the double speed transmission. Adjacent plates and frames maintain a uniform distance under the action of the micro-elastic rope. After the plates and frames are fully opened, the filter cake is unloaded. After the unloading is completed, the telescopic rod is retracted and the opening and closing trolley is reset. Step 5: Check the cleanliness of each plate and frame surface and remove any residual filter cake; drive the opening and closing trolley to reclose the plate and frame back to the initial close position, ensuring that the micro-elastic rope is in a naturally stretched state; shut down all drive and hydraulic systems to complete one work cycle, and the equipment enters standby mode.

[0015] The present invention discloses the following technical effects: With the dual drive components of the plate and frame moving mechanism and the double speed transmission design, drive component I controls the precise movement of the opening and closing trolley, while drive component II adjusts the telescopic rod to quickly connect with the lugs, which can drive the plate and frame to open and close quickly; at the same time, the micro-elastic rope connects the plate and frame to achieve synchronous linkage, which greatly shortens the plate and frame opening and closing cycle, reduces non-filtration operation time, and effectively matches the high-efficiency operation requirements of ultra-high pressure and high-capacity filter press.

[0016] Adjacent plates and frames are connected by micro-elastic ropes to ensure synchronization during movement and avoid misalignment and jamming; the hydraulic system drives the pressure plate to apply pressure precisely, which fits tightly with the plates and frames, improving the sealing effect and reducing the risk of leakage under ultra-high pressure conditions; the precise cooperation of each sliding component reduces equipment operating wear and extends service life.

[0017] The dual drive components enable independent control of the movement of the opening and closing trolley and the extension and retraction of the telescopic rod, ensuring precise and controllable movements and reducing operational difficulty. The telescopic rod and the hanging lugs are arranged accordingly to accommodate different combinations of plate and frame components. The elastic design of the micro-elastic rope can buffer the impact force of the plate and frame docking, while facilitating daily inspection and maintenance of the equipment, thus improving the applicability and operation and maintenance efficiency of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the plate and frame double-speed opening and closing mechanism of the present invention for an ultra-high pressure, high-capacity filter press; Figure 2 This is a schematic diagram of the plate and frame moving mechanism of the present invention.

[0020] The components include: 1. Pressure-bearing end plate; 2. Pressurizing end plate; 3. Filter press plate frame; 4. Hydraulic cylinder; 5. Plate frame moving mechanism; 501. Drive toothed belt II; 502. Drive toothed belt I; 51. Opening and closing trolley; 511. Drive sleeve; 512. Push rod; 513. Guide sleeve; 514. Wheel; 6. Hanging lug; 601. Insertion hole; 602. Locking screw hole; 603. Roller; 7. Pressure plate; 8. Guide plate; 9. Support plate; 10. Micro-elastic rope. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figures 1-2This invention provides a plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press, comprising: The filter press frame has a pressure-bearing end plate 1 and a pressure-applying end plate 2 fixed at its front and rear ends, respectively. A hydraulic system is installed on the pressure-applying end plate 2. A pressure plate 7 is slidably connected to the filter press frame. The pressure plate 7 is located between the pressure-bearing end plate 1 and the pressure-applying end plate 2. The hydraulic system is fixed to the pressure plate 7 and is used to push the pressure plate 7 to move. The filter press frame 3 is provided in several groups. The several groups of filter press frames 3 are arranged in parallel between the pressure end plate 1 and the pressure end plate 2. The two sides of the filter press frame 3 are respectively equipped with hanging ears 6. The hanging ears 6 are slidably connected to the filter press frame. The hanging ears 6 of adjacent filter press frames 3 are connected in series by micro-elastic ropes 10. The pressure plate 7 abuts against the last filter press frame 3. The plate and frame moving mechanism 5 includes a guide plate 8, a support plate 9, an opening and closing trolley 51, a telescopic rod, a drive assembly I, and a drive assembly II. The guide plate 8 and the support plate 9 are both horizontally fixed on the filter press frame. The opening and closing trolley 51 slides on the guide plate 8. The drive assembly I is in transmission cooperation with the opening and closing trolley 51. The telescopic rod is installed on the opening and closing trolley 51. The drive assembly II is installed on the support plate 9 and is in transmission cooperation with the telescopic rod to control the extension and retraction of the telescopic rod. The telescopic rod is arranged correspondingly with the hanging lug 6.

[0024] The scheme is further optimized. The hydraulic system includes hydraulic cylinder 4 and hydraulic control system. Several sets of hydraulic cylinder 4 are set up and fixed in parallel on the pressure end plate 2. The pressure plate 7 is fixed on the output end of the hydraulic cylinder 4. The hydraulic control system is connected to the hydraulic cylinder 4.

[0025] During operation, the hydraulic control system receives pressure and displacement signals from the plate and frame opening and closing operation, and outputs precise hydraulic oil drive signals to each set of hydraulic cylinders 4. Several sets of hydraulic cylinders 4, which are fixed in parallel on the pressure end plate 2, respond synchronously, and their output ends drive the pressure plate 7 to slide smoothly along the filter press frame. During the frame closing and sealing stage, the hydraulic cylinders 4 extend synchronously, pushing the pressure plate 7 towards the pressure end plate 1, applying uniform and stable pressure to the last filter press plate 3, ensuring that multiple sets of plates and frames fit tightly together. During the pressure relief and frame opening stage, the hydraulic control system controls the hydraulic cylinders 4 to retract synchronously, driving the pressure plate 7 to retract in the opposite direction, releasing the pressure constraint on the plate and frame, and providing conditions for subsequent plate and frame opening. The parallel arrangement of multiple sets of hydraulic cylinders 4 can ensure that the pressure plate 7 is subjected to balanced force, avoiding excessive local pressure that could cause plate and frame deformation. The hydraulic control system enables precise control of pressure and displacement, adapting to the requirements of ultra-high pressure operation.

[0026] The design is further optimized by providing an insertion hole 601 on the ear 6. The insertion hole 601 has a conical structure. The two ends of the micro-elastic rope 10 are respectively inserted into the insertion holes 601 of the ear plates of the adjacent filter press frame 3. The ear plates are provided with locking screw holes 602, which are arranged perpendicularly to the insertion holes 601. A locking nut is threaded into the locking screw hole 602, which is used to position and fix the micro-elastic rope 10.

[0027] During installation, the two ends of the micro-elastic rope 10 are inserted into the conical insertion holes 601 of the lugs 6 of the adjacent filter press frame 3. The conical structure enables the micro-elastic rope 10 to be quickly positioned and initially limited, preventing the rope from shifting. Then, the locking nut in the locking screw hole 602, which is arranged perpendicular to the insertion hole 601, is tightened. The end of the locking nut presses against the micro-elastic rope 10, achieving rigid fixation of the rope and preventing the micro-elastic rope 10 from falling off or loosening during operation. During operation, when the plate and frame moving mechanism 5 moves a plate and frame, the tension or thrust of the micro-elastic rope 10 is transmitted, causing the adjacent plate and frame to move synchronously. The cooperation between the conical insertion hole 601 and the locking nut ensures effective force transmission. At the same time, the elasticity of the micro-elastic rope 10 itself can buffer the impact force during the movement of the plate and frame, preventing damage from collisions.

[0028] The scheme is further optimized. The opening and closing trolley 51 includes a body and wheels 514. The wheels 514 are rotatably connected to the body. The drive assembly I is used to drive the wheels 514 to roll on the guide plate 8.

[0029] Drive component I outputs power to drive wheel 514 to rotate. Since wheel 514 is connected to the vehicle body and contacts guide plate 8, friction is generated between the rotating wheel 514 and guide plate 8, causing the vehicle body to slide horizontally along guide plate 8. The wheel 514 converts the sliding friction between the vehicle body and guide plate 8 into rolling friction, significantly reducing the resistance during the movement of the trolley, making the movement of the opening and closing trolley 51 smoother and energy consumption lower. It also reduces component wear, extends the service life of the equipment, and provides a basic guarantee for the precise and rapid opening and closing of the frame.

[0030] The scheme is further optimized. The drive component I includes a drive toothed belt I 502, a drive sprocket, and a first transmission device. The drive sprocket is fixed on the vehicle body, the drive toothed belt I 502 is mounted on the guide plate 8, the first transmission device is in transmission cooperation with the drive toothed belt I 502, and the drive sprocket meshes with the drive toothed belt I 502.

[0031] The first transmission device receives power and outputs it to the drive toothed belt I 502. The drive toothed belt I 502 meshes with the drive sprocket fixed on the vehicle body. Since the drive toothed belt I 502 is mounted on the fixed guide plate 8, its movement drives the drive sprocket meshing with it to rotate. The drive sprocket is fixedly connected to the vehicle body, and the rotation of the sprocket is converted into the horizontal movement of the vehicle body along the guide plate 8, which in turn drives the entire opening and closing trolley 51 to slide along the guide plate 8. The meshing transmission of the toothed belt and the sprocket has the characteristics of precise transmission ratio, high transmission efficiency, and smooth operation, which can ensure that the opening and closing trolley 51 moves according to the preset trajectory and speed, accurately aligns with the lugs 6 of the filter press frame 3, and ensures the accuracy of the opening and closing action of the frame.

[0032] The design is further optimized. The telescopic rod includes a drive sleeve 511, a push rod 512, and a guide sleeve 513. The guide sleeve 513 is fixed to the vehicle body. The push rod 512 is horizontally slidably connected inside the guide sleeve 513. The drive sleeve 511 is rotatably connected to the vehicle body and is threadedly connected to the push rod 512. The drive assembly II is in transmission cooperation with the drive sleeve 511.

[0033] Drive assembly II outputs power to rotate drive sleeve 511. Since drive sleeve 511 and push rod 512 are connected by a thread, and push rod 512 is horizontally slidably connected to the vehicle body via guide sleeve 513, guide sleeve 513 restricts the rotational freedom of push rod 512, converting the rotational motion of drive sleeve 511 into the horizontal linear motion of push rod 512 along guide sleeve 513. When docking with lug 6 is required, drive sleeve 511 rotates forward, pushing push rod 512 out until it precisely docks with lug 6; when disengaging from lug 6 is required, drive sleeve 511 rotates in the opposite direction, causing push rod 512 to retract. The guiding function of guide sleeve 513 ensures the smoothness and accuracy of push rod 512's extension and retraction, preventing push rod 512 from deviating and guaranteeing the reliability of the docking between the extension rod and lug 6.

[0034] The scheme is further optimized. The drive assembly II includes a drive toothed belt II 501 and a second transmission device. Both the drive toothed belt II 501 and the second transmission device are mounted on the support plate 9. The second transmission device is in transmission cooperation with the drive toothed belt II 501, and the drive toothed belt II 501 is engaged with the drive sleeve 511.

[0035] The second transmission device receives power and drives the toothed belt II 501 to move. The toothed belt II 501 meshes with the drive sleeve 511 of the telescopic rod, thereby driving the drive sleeve 511 to rotate. Since both the toothed belt II 501 and the second transmission device are mounted on the fixed support plate 9, their operation is highly stable, ensuring that power is smoothly transmitted to the drive sleeve 511. The smoothness of the toothed belt drive can avoid jamming or speed fluctuations during the rotation of the drive sleeve 511, thus ensuring that the extension and retraction speed of the push rod 512 is uniform and the displacement is precise, realizing the smooth docking and disengagement of the telescopic rod and the lug 6, and providing power guarantee for the smooth opening and closing of the frame.

[0036] The method of using the plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter presses includes the following steps: Step 1: Check the tightness of all connections of the filter press frame components, and confirm that the pressure end plate 1 and pressure end plate 2 are installed in place; check that the hanging lugs 6 of the filter press frame 3 slide smoothly with the frame, and that the micro-elastic rope 10 is not loose or damaged; check that the guide plate 8 and support plate 9 in the plate and frame moving mechanism 5 are firmly fixed, that the opening and closing trolley 51 slides smoothly without jamming, and that the telescopic rod extends and retracts flexibly; start the hydraulic system, drive assembly I and drive assembly II for no-load test run, and after confirming that each system is operating normally, reset the opening and closing trolley 51 to the initial position, retract the telescopic rod, and return the pressure plate 7 to the initial state close to the pressure end plate 2; Step 2: Drive the opening and closing trolley 51 along the guide plate 8 to the corresponding hanging ear 6 position through drive component I. Start drive component II to control the extension rod to extend so that the extension rod is precisely aligned with the hanging ear 6 of the filter press plate frame 3. Drive the opening and closing trolley 51 to move in the opposite direction, and drive all the filter press plate frames 3 to move synchronously along the frame through the extension rod. Adjacent plates and frames are tightly fitted with the help of micro-elastic ropes 10. After the plates and frames are completely closed, retract the extension rod and reset the opening and closing trolley 51. Start the hydraulic system to push the pressure plate 7 towards the pressure end plate 1 until the pressure plate 7 abuts against the last plate and frame and applies the preset pressure to complete the plate and frame sealing. Step 3: After the filter press operation is completed, shut off the hydraulic system pressure output and control the hydraulic system to drive the pressure plate 7 to retract in the opposite direction to release the pressure on the plate frame; restart the drive assembly I to move the opening and closing trolley 51 to the corresponding position of the plate frame lug 6, and drive assembly II controls the telescopic rod to extend and connect with the lug 6. Step 4: Drive the opening and closing trolley 51 to move at a constant speed through drive component I. With the help of the telescopic rod, the filter press plate frame 3 opens in sequence. The plate frame is quickly separated by the double speed transmission. The adjacent plate frames maintain a uniform distance under the action of the micro elastic rope 10. After the plate frame is fully opened, the filter cake is unloaded. After the unloading is completed, the telescopic rod is retracted and the opening and closing trolley 51 is reset. Step 5: Check the cleanliness of each plate and frame surface and clean the residual filter cake; drive the opening and closing trolley 51 to move the plate and frame back to the initial close position, ensuring that the micro-elastic rope 10 is in a naturally stretched state; shut down all drive systems and hydraulic systems, complete one work cycle, and the equipment enters standby mode.

[0037] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "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 invention, and are not intended to 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 of this invention.

[0038] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter presses, characterized in that: include: A filter press frame, with a pressure-bearing end plate (1) and a pressure-applying end plate (2) fixed at its front and rear ends respectively. A hydraulic system is installed on the pressure-applying end plate (2). A pressure plate (7) is slidably connected to the filter press frame. The pressure plate (7) is located between the pressure-bearing end plate (1) and the pressure-applying end plate (2). The hydraulic system is fixed to the pressure plate (7) and is used to push the pressure plate (7) to move. The filter press frame (3) is provided in several groups. The several groups of filter press frames (3) are arranged in parallel between the pressure end plate (1) and the pressure end plate (2). The two sides of the filter press frame (3) are respectively equipped with hanging ears (6). The hanging ears (6) are slidably connected to the filter press frame. The hanging ears (6) of adjacent filter press frames (3) are connected in series by micro-elastic ropes (10). The pressure plate (7) abuts against the last end of the filter press frame (3). The plate and frame moving mechanism (5) includes a guide plate (8), a support plate (9), an opening and closing trolley (51), a telescopic rod, a drive assembly I, and a drive assembly II. The guide plate (8) and the support plate (9) are both horizontally fixed on the filter press frame. The opening and closing trolley (51) slides on the guide plate (8). The drive assembly I is in transmission cooperation with the opening and closing trolley (51). The telescopic rod is installed on the opening and closing trolley (51). The drive assembly II is installed on the support plate (9) and is in transmission cooperation with the telescopic rod to control the extension and retraction of the telescopic rod. The telescopic rod is arranged correspondingly to the hanging lug (6).

2. The plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press according to claim 1, characterized in that, The hydraulic system includes a hydraulic cylinder (4) and a hydraulic control system. The hydraulic cylinder (4) is provided in several groups. The several groups of hydraulic cylinders (4) are fixed in parallel on the pressure end plate (2). The pressure plate (7) is fixed at the output end of the hydraulic cylinder (4). The hydraulic control system is connected to the hydraulic cylinder (4).

3. The plate and frame double-speed opening and closing mechanism for ultra-high pressure, high-capacity filter press according to claim 1, characterized in that, The ear (6) has an insertion hole (601) with a conical structure. The two ends of the micro-elastic rope (10) are respectively inserted into the insertion holes (601) of the ear plates of the adjacent filter press frame (3). The ear plate has a locking screw hole (602) with the insertion hole (601) arranged perpendicularly. The locking screw hole (602) is threaded with a locking nut and is used to position and fix the micro-elastic rope (10).

4. The plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press according to claim 1, characterized in that, The opening and closing trolley (51) includes a body and wheels (514), the wheels (514) are rotatably connected to the body, and the drive assembly I is used to drive the wheels (514) to roll on the guide plate (8).

5. The plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press according to claim 4, characterized in that, The drive assembly I includes a drive toothed belt I (502), a drive sprocket, and a first transmission device. The drive sprocket is fixed on the vehicle body, and the drive toothed belt I (502) is mounted on the guide plate (8). The first transmission device is in transmission cooperation with the drive toothed belt I (502), and the drive sprocket meshes with the drive toothed belt I (502).

6. The plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press according to claim 4, characterized in that, The telescopic rod includes a drive sleeve (511), a push rod (512), and a guide sleeve (513). The guide sleeve (513) is fixed on the vehicle body. The push rod (512) is horizontally slidably connected inside the guide sleeve (513). The drive sleeve (511) is rotatably connected to the vehicle body and threadedly connected to the push rod (512). The drive assembly II is in transmission cooperation with the drive sleeve (511).

7. The plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press according to claim 6, characterized in that, The drive assembly II includes a drive toothed belt II (501) and a second transmission device. Both the drive toothed belt II (501) and the second transmission device are mounted on the support plate (9). The second transmission device is in transmission cooperation with the drive toothed belt II (501), and the drive toothed belt II (501) meshes with the drive sleeve (511).

8. A method of using a plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press, based on the plate and frame double-speed opening and closing mechanism for an ultra-high pressure, high-capacity filter press as described in any one of claims 1-7, characterized in that... Includes the following steps: Step 1: Check the tightness of the connections of each component of the filter press frame, and confirm that the pressure end plate (1) and the pressure end plate (2) are installed in place; check that the hanging ears (6) of the filter press frame (3) slide smoothly with the frame, and that the micro-elastic rope (10) is not loose or damaged; check that the guide plate (8) and the support plate (9) of the plate frame moving mechanism (5) are firmly fixed, that the opening and closing trolley (51) slides without jamming, and that the telescopic rod extends and retracts flexibly; start the hydraulic system, drive component I and drive component II for no-load test run, and after confirming that each system is operating normally, reset the opening and closing trolley (51) to the initial position, retract the telescopic rod, and return the pressure plate (7) to the initial state close to the pressure end plate (2); Step 2: Drive the opening and closing trolley (51) along the guide plate (8) to the corresponding hanging ear (6) position through drive component I, start drive component II to control the extension rod to extend, so that the extension rod is precisely connected with the hanging ear (6) of the filter press plate frame (3); drive the opening and closing trolley (51) to move in the opposite direction, and drive all the filter press plate frames (3) to move synchronously along the frame through the extension rod, and the adjacent plate frames are tightly fitted with the help of micro elastic rope (10); after the plate frame is completely closed, retract the extension rod and reset the opening and closing trolley (51); start the hydraulic system to push the pressure plate (7) to move towards the pressure end plate (1) until the pressure plate (7) abuts against the last plate frame and applies the preset pressure to complete the plate frame sealing; Step 3: After the filter press operation is completed, turn off the hydraulic system pressure output and control the hydraulic system to drive the pressure plate (7) to return in the opposite direction to release the pressure on the plate frame; restart the drive assembly I to move the opening and closing trolley (51) to the corresponding position of the plate frame hanging ear (6), and drive assembly II controls the telescopic rod to extend and connect with the hanging ear (6). Step 4: Drive the opening and closing trolley (51) to move at a constant speed through the drive component I, and drive the filter press plate frame (3) to open in sequence with the help of the telescopic rod. Use the double speed transmission to realize the rapid separation of the plate frame. The adjacent plate frames maintain a uniform distance under the action of the micro elastic rope (10). After the plate frame is fully opened, the filter cake is unloaded. After the unloading is completed, control the telescopic rod to retract and the opening and closing trolley (51) to reset. Step 5: Check the cleanliness of each plate and frame surface and clean the residual filter cake; drive the opening and closing trolley (51) to drive the plate and frame to close again to the initial close state, ensuring that the micro-elastic rope (10) is in a natural tension state; shut down all drive systems and hydraulic systems, complete one work cycle, and the equipment enters standby state.

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