Mud cake plate-and-frame filter press device
By designing a structure in which the scraper part and the movable head are simultaneously lowered in the mud cake frame filter press, the problem of the filter cake being unable to separate due to its own gravity is solved, and more efficient filter cake cleaning and normal progress of subsequent filtration operations are achieved.
Patent Information
- Application Number
- CN202411747860.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-03-07
AI Technical Summary
After the filtration process of the existing mud cake frame filter press, the filter cake cannot be completely separated due to its own gravity, resulting in some of the filter cake remaining on the filter plate, affecting subsequent filtration operations.
A mud cake frame filter press device including a scraper section is designed. Through the synchronous decline of the movable head and the displacement block, the scraper is driven to fall and contact with the filter cake, and a vertical downward squeeze pressure is applied to assist in the separation of the filter cake.
Through external force interference, the problem that some filter cakes cannot be separated due to their own gravity is solved, the cleaning effect of the filter cakes is improved, and the normal progress of subsequent filtration operations is ensured.
Smart Images
Figure CN119565231A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of filter presses, and in particular to a mud cake plate-frame filter press device. Background Art
[0002] Mud cake plate and frame filter press is mainly used to filter various sludges, such as sludge generated by municipal sewage treatment plants, sludge after industrial wastewater treatment, etc. The working principle of the plate and frame filter press is to apply pressure to the plate and frame to discharge the water in the sludge through the filter cloth, thereby compressing the solid matter in the sludge into a mud cake. This filter press has the advantages of high filtration pressure, low moisture content of the mud cake, and large processing capacity. In addition to sludge, the plate and frame filter press can also be used to filter some other solid-liquid mixtures, such as mine tailings, waste residues in food processing, etc. However, different materials need to choose appropriate filter cloths and operating parameters when filtering to ensure the filtering effect and the normal operation of the equipment. In short, the mud cake plate and frame filter press is mainly used to filter various sludges and some solid-liquid mixtures to achieve the purpose of solid-liquid separation; After the filtration process of the mud cake plate and frame filter press is completed, the adjacent filter plates are pulled apart one by one through a hydraulic device. The action of pulling apart the filter plates is usually carried out gradually to avoid excessive impact on the equipment. After the filter plates are pulled apart, the filter cake is exposed to the air and falls under its own gravity. Due to the low moisture content of the mud cake in this way, part of the filter cake is easy to remain on the filter plate, which affects the subsequent filtration operation.
[0003] Therefore, it is necessary to provide a new mud cake plate and frame filter press device to solve the above-mentioned technical problems. Summary of the invention
[0004] In view of the problems existing in the prior art, the present invention provides a mud cake plate and frame filter press device.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a mud cake plate-frame filter press device, comprising a frame, a thrust plate, a clamping plate, a main beam, a filter plate and a hydraulic push rod, the main beam is symmetrically installed on the outer side of the frame, the thrust plate is fixedly installed on the tail of the frame, a hydraulic push rod is installed on the head of the frame, a telescopic rod built into the hydraulic push rod runs through the frame and is located between the two main beams, and the clamping plate is installed at one end of the telescopic rod built into the hydraulic push rod, a plurality of filter plates are placed on the main beam between the thrust plate and the clamping plate through rollers, the rollers are symmetrically fixed on both sides of the filter plates, each filter plate is installed with a scraper portion, a through hole is built into the thrust plate, and a feed pipe and a liquid outlet pipe are fixedly installed on one side of the through hole; The two filter plates at the head and tail are fixed on the side walls of the thrust plate and the clamping plate respectively; The scraper portion includes a deflection rod inserted into the roller, an L-shaped plate is sleeved on the outside of the deflection rod, and the side wall of the L-shaped plate arranged on one side of any filter plate other than the head and tail filter plates is welded with a support rod, a counterweight block is welded on the outer wall of the deflection rod near the end, a first chain is welded at the center of the outer wall of the support rod, and the end of the first chain is fixed at the center of the bottom of the counterweight block and connected to the thrust plate. A second chain is arranged at the bottom of the counterweight block on one side of the filter plate, and the end of the second chain is welded to the bottom of the adjacent counterweight block; The ends of the deflection rods are welded with driving sleeves, the outer wall of the driving sleeves is provided with arc-shaped extrusion holes along the axial direction, and the arc-shaped extrusion holes at the filter plate position on one side connected to the thrust plate are rotated in the opposite direction to the arc-shaped extrusion holes at other positions, the outer wall of the L-shaped plate is welded with a rectangular strip, the outer side of the rectangular strip is sleeved with a rectangular sleeve, the lower end surface of the rectangular sleeve is welded with a synchronization rod, and a part of the synchronization rod is inserted into the arc-shaped extrusion hole; Slide rails are symmetrically installed on both side walls of any filter plate, strip holes are symmetrically opened on both sides of the slide rails, a displacement block is slidably installed in the slide rail, a driving arm is hinged between the end face of the displacement block and the upper end face of the rectangular sleeve, placement grooves are symmetrically opened on both sides of the displacement block, a movable head is inserted in the placement groove, a transverse spring is arranged at the connection between the placement groove and the movable head, a push rod is installed on the top of the movable head, and a scraper is installed on one side of the push rod.
[0006] Preferably, the movable head includes a block directly inserted into the placement groove, a pin is embedded in the outer end face of the block, a disc is concentrically installed at the end of the pin, the outer ring of the disc is preset with a welding position connected to the top rod, the outer ring of the disc is provided with tooth blocks along its path, cross plates are symmetrically welded on both side walls of the filter plate, racks are welded on the end faces of the cross plates in the vertical direction, a limit rod is welded on the side wall of the slide rail, and the limit rod is close to the outer wall of the top rod.
[0007] Preferably, a magnet is embedded in the connection between the block and the pin, and two magnets at the same movable head attract each other.
[0008] Preferably, a support spring is installed in the slide rail along the vertical direction, and the top of the support spring is fixed to the lower end surface of the displacement block.
[0009] Preferably, a baffle is installed at the end of the rectangular strip by means of bolts, and the horizontal height of the upper end surface of the baffle is greater than the horizontal height of the upper end surface of the rectangular sleeve.
[0010] Preferably, the outer wall of the feed pipe is connected to an air intake pipe, the air intake pipe is directly connected to the gas compressor, and control valves are installed on both the feed pipe and the air intake pipe.
[0011] Preferably, the synchronization rod is formed by welding two solid round rods of different diameters, with the solid round rod of larger diameter being on top.
[0012] Preferably, a bearing is installed at the connection between the roller and the deflection rod.
[0013] Compared with the related art, the mud cake plate-frame filter press device provided by the present invention has the following beneficial effects: The present invention provides a mud cake plate-frame filter press device, which is provided with components such as a scraper portion. When the filter plates at various positions of the present invention are separated, a movable head follows a displacement block and descends synchronously, and the movable head drives the scraper to descend through a push rod. After the scraper descends, it contacts the filter cake and applies a vertical downward extrusion force to it, and external force interference is applied to it on the basis of the traditional single self-gravity drop, thereby solving the problem that some filter cakes cannot be separated due to their own gravity; at the same time, the scraper at various positions is accompanied by an angle deflection during the vertical direction movement, thereby further increasing the horizontal descending height of the scraper to a certain extent, increasing the coverage area of the scraper relative to the filter cake, and thus improving the filter cake cleaning effect.
[0014] The present invention provides a mud cake plate and frame filter press device. After the sludge filtration is completed, the control valve on the feed pipe can be closed first to cut off the sludge supply of the feed pipe, and the control valve on the air intake pipe can be started, and the high-pressure gas enters the feed pipe along the air intake pipe and enters the filter channel along the feed pipe, and the filter cakes on both sides of the filter plate are further squeezed by the high-pressure gas to further reduce the water content of the filter cakes. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The overall structure of the present invention is three-dimensional Figure 1 ; Figure 2 The overall structure of the present invention is three-dimensional Figure 2 ; Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of the middle A area; Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of the middle B area; Figure 5 For the present invention Figure 1 Sectional view along the MM direction; Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of the middle C area; Figure 7 It is a cross-sectional view of the structure of the slide rail and displacement block of the present invention; Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of the middle D area; Numbers in the figure: 1, frame, 2, thrust plate, 3, clamping plate, 4, main beam, 5, filter plate, 6, hydraulic push rod, 7, scraper part, 51, roller, 21, feed pipe, 22, liquid outlet pipe, 71, deflection rod, 72, L-shaped plate, 73, counterweight, 74, support rod, 75, first chain, 751, second chain, 76, drive sleeve, 77, slide rail, 78, displacement block, 79, drive arm , 70, movable head, 761, arc extrusion hole, 721, rectangular bar, 722, rectangular sleeve, 723, synchronization rod, 724, baffle, 771, bar hole, 772, push rod, 773, scraper, 774, support spring, 701, block, 702, pin shaft, 703, disc, 704, gear block, 705, cross plate, 706, rack, 707, magnet, 211, intake pipe. DETAILED DESCRIPTION
[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0017] In addition, the terms used below are defined based on the functions of the present invention and may differ depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.
[0018] See also Figure 1-Figure 8 The mud cake plate-frame filter press device of the present invention comprises a frame 1, a thrust plate 2, a clamping plate 3, a main beam 4, a filter plate 5 and a hydraulic push rod 6. The main beam 4 is symmetrically installed on the outer side of the frame 1, the thrust plate 2 is fixedly installed on the tail of the frame 1, the hydraulic push rod 6 is installed on the head of the frame 1, the hydraulic push rod 6 has a built-in telescopic rod that penetrates the frame 1 and is located between the two main beams 4, and the clamping plate 3 is installed at one end of the built-in telescopic rod of the hydraulic push rod 6, and a plurality of filter plates 5 are placed on the main beam 4 between the thrust plate 2 and the clamping plate 3 through rollers 51, and the rollers 51 are symmetrically fixed on the filter plates 5. On both sides, each filter plate 5 is installed with a scraper portion 7, a through hole is built into the thrust plate 2, and a feed pipe 21 and a liquid outlet pipe 22 are fixedly installed on one side of the through hole. The hydraulic push rod 6 can push the pressing plate 3 to drive a plurality of filter plates 5 to merge and compact. The compacted plurality of filter plates 5 are combined into a filter channel, and the sludge enters the above-mentioned filter channel from the feed pipe 21. The moisture in the sludge is discharged from the liquid outlet pipe 22 through the filter cloth in the filter plate 5. The solid matter in the sludge is compressed into a filter cake between the filter plates 5. The specific working principle of the plate and frame filter press will not be repeated here, and reference can be made to the existing plate and frame filter press; The two filter plates 5 at the head and tail are respectively fixed on the side walls of the thrust plate 2 and the pressing plate 3, that is, the position of the filter plate 5 connected to the thrust plate 2 remains unchanged, and the filter plate 5 connected to the pressing plate 3 moves together with the pressing plate 3, and there is no filter cloth on the connection surface between the two filter plates 5 and the thrust plate 2 and the pressing plate 3; The scraper portion 7 includes a deflection rod 71 inserted into the roller 51, an L-shaped plate 72 is sleeved on the outer side of the deflection rod 71, and a support rod 74 is welded to the side wall of the L-shaped plate 72 arranged on one side of any filter plate 5 other than the first and last filter plates 5, a counterweight block 73 is welded to the outer wall of the deflection rod 71 near the end, and a first chain 75 is welded to the center of the outer wall of the support rod 74, and the end of the first chain 75 is fixed to the bottom center of the counterweight block 73 and connected to the thrust plate 2. A second chain 751 is arranged at the bottom of the counterweight block 73 on one side of the filter plate 5. During the filtration process, that is, when the filter plates 5 are combined and pressed, the first chain 75 and the second chain 751 are both in a relaxed state; The end of the second chain 751 is welded to the bottom of the adjacent counterweight block 73. After the sludge treatment is completed, the hydraulic push rod 6 drives the pressing plate 3 back to the initial position. During the movement, the first chain 75 and the second chain 751 drive the filter plates 5 to be separated at equal intervals. In this state, the first chain 75 and the second chain 751 are both in a straight state, and the filter cake falls under the action of its own gravity. The ends of the deflection rods 71 are welded with drive sleeves 76, and the outer wall of the drive sleeves 76 is provided with arc-shaped extrusion holes 761 along the axial direction, and the arc-shaped extrusion holes 761 at the filter plate 5 on one side connected to the thrust plate 2 are rotated in the opposite direction to the arc-shaped extrusion holes 761 at other positions. A rectangular strip 721 is welded to the outer wall of the L-shaped plate 72, and a rectangular sleeve 722 is sleeved on the outer side of the rectangular strip 721. A synchronization rod 723 is welded to the lower end surface of the rectangular sleeve 722, and a part of the synchronization rod 723 is inserted into the arc-shaped extrusion hole 761. When the hydraulic push rod 6 drives the first filter plate 5 to move through the clamping plate 3, the first chain 75 is gradually tightened. After moving a certain distance, the end of the first chain 75 connected to the counterweight block 73 drives the counterweight block 73 along the Figure 4 The first chain 75 is tightened to pull the support rod 74 to drive the adjacent filter plates 5 to separate. The counterweight block 73 and the deflection rod 71 are integrated. The rotation of the counterweight block 73 can be regarded as the rotation of the deflection rod 71 in the L-shaped plate 72 and the roller 51. The deflection rod 71 then drives the drive sleeve 76 connected to the end to rotate together. The arc-shaped extrusion hole 761 provided on the outer wall of the drive sleeve 76 will squeeze the synchronization rod 723. The extrusion direction of the synchronization rod 723 is parallel to the axial direction of the arc-shaped extrusion hole 761, that is, the synchronization rod 723 is along the Figure 6 As shown in the L direction, the rectangular sleeve 722 is also driven by the synchronization rod 723 to move along the rectangular strip 721 in the L direction; The two side walls of any filter plate 5 are symmetrically installed with slide rails 77, and strip holes 771 are symmetrically opened on both sides of the slide rails 77. A displacement block 78 is slidably installed in the slide rails 77. A driving arm 79 is hinged between the end face of the displacement block 78 and the upper end face of the rectangular sleeve 722. A placement groove 781 is symmetrically opened on both sides of the displacement block 78. A movable head 70 is inserted in the placement groove 781. A transverse spring is arranged at the connection between the placement groove 781 and the movable head 70. A push rod 772 is installed on the top of the movable head 70, and a scraper 773 is installed on one side of the push rod 772. When the filter plates 5 are combined and pressed, the adjacent movable heads 70 collide with each other and part of the area shrinks in the placement groove 781. The transverse spring is in a compressed state under the extrusion of the movable head 70. A support spring 774 is installed in the slide rail 77 along the vertical direction, and the top of the support spring 774 is fixed to the lower end surface of the displacement block 78. When the filter plates 5 are combined and pressed, the elastic force of the support spring 774 pushes the displacement block 78 to the highest point of the slide rail 77. When the filter plates 5 at each position are separated, the middle rectangular sleeve 722 will drive one end of the driving arm 79 to move horizontally, and the other end of the driving arm 79 will drive the displacement block 78 to vertically descend in the slide rail 77, and the movable head 70 will synchronously descend with the displacement block 78, and the movable head 70 will drive the scraper 773 to descend through the top rod 772. After the scraper 773 descends, it contacts the filter cake and applies a vertical downward squeezing force to it, thereby solving the problem that some filter cakes cannot be separated due to their own gravity; Among them, the driving sleeve 76 connected to both ends of the second chain 751 rotates in opposite directions; It should be noted that if Figure 1-3 As shown, when the filter plates 5 are combined and pressed, the horizontal height of the scrapers 773 at each position is greater than the upper end surface of the filter plates 5. In this height difference, the filter plates 5 have been partially separated, which means that the scrapers 773 enter the filter cloth area on the side wall of the filter plates 5 only after the filter plates 5 have been partially separated. Similarly, when the filter plates 5 are separated and the transverse spring pushes the movable head 70 to move, when the two movable heads 70 on the same displacement block 78 reach the maximum displacement, the spacing between the two ends of the two movable heads 70 is greater than the thickness of the filter plates 5 and less than the sum of the thickness of the filter plates 5 and the filter cakes on both sides, which ensures that the scrapers 773 can contact the filter cakes when they are vertically descended. When the present invention enters the filtration state again, that is, when the filter plates 5 at each position are combined and pressed again, the gravity of the counterweight block 73 will drive the deflection rod 71 back to the initial position, and the support spring 774 will push the displacement block 78 to the top of the slide rail 77 again. It should be noted that, based on the counterweight block 73, a torsion spring can also be installed at the connection between the deflection rod 71 and the L-shaped plate 72 or the roller 51, and the torsion spring can further drive the deflection rod 71 to reset.
[0019] In another embodiment, see Figure 2-Figure 8The movable head 70 includes a block 701 directly inserted into the placement groove 781, a pin 702 is embedded in the outer end surface of the block 701, a disc 703 is concentrically installed at the end of the pin 702, the outer ring of the disc 703 is preset with a welding position connected to the top rod 772, and the outer ring of the disc 703 is provided with a tooth block 704 along its path. The two side walls of the filter plate 5 are symmetrically welded with cross plates 705, and the end surface of the cross plate 705 is welded with a rack 706 in the vertical direction. The side wall of the slide rail 77 is welded with a limit rod 708, and the limit rod 708 is close to the outer wall of the top rod 772. The deflection angle of the top rod 772 is locked by the limit rod 708, that is, the top rod 772 can only be moved along the Figure 5 Y deflection; When the displacement block 78 is at the top of the slide rail 77, the top horizontal height of the rack 706 is less than the horizontal height of the lowest gear block 704. When the movable head 70 follows the displacement block 78 to descend to the side of the gear block 704, the gear block 704 provided on the outer wall of the disk 703 will contact and gradually mesh with the rack 706, and the disk 703 and the pin 702 will rotate relative to the block 701, that is, the push rod 772 and the scraper 773 will follow the disk 703 along the same direction. Figure 5 The scraper 773 rotates in the Y direction, thereby further increasing the horizontal descending height of the scraper 773, increasing the coverage area of the scraper 773 relative to the filter cake, and thus improving the filter cake cleaning effect.
[0020] See also Figure 8 A magnet 707 is embedded at the connection between the block 701 and the pin shaft 702, that is, one magnet 707 is installed on the outer wall of the pin shaft 702, and the other magnet 707 is installed on the inner side of the block 701. When the outer wall of the push rod 772 contacts the limiting rod 708, the two magnets 707 at the same movable head 70 attract each other. When the tooth block 704 is separated from the rack 706, the magnets 707 attract each other again, keeping the position of the push rod 772 unchanged after each operation.
[0021] like Figure 4 As shown, a baffle 724 is installed at the end of the rectangular strip 721 by bolts, and the horizontal height of the upper end surface of the baffle 724 is greater than the horizontal height of the upper end surface of the rectangular sleeve 722. The baffle 724 is used to limit the rectangular sleeve 722 to prevent the rectangular sleeve 722 from falling off the rectangular strip 721.
[0022] In another embodiment, see Figure 1 and Figure 2The outer wall of the feed pipe 21 is connected with an air inlet pipe 211, which is directly connected to a gas compressor. The gas compressor is a common air compression device on the market, and its working principle is not repeated in this embodiment. Control valves are installed on the feed pipe 21 and the air inlet pipe 211. When the filter pressing operation is performed, the control valve on the air inlet pipe 211 is in a closed state. After the sludge filter pressing is completed, the control valve on the feed pipe 21 can be closed first to cut off the sludge supply of the feed pipe 21, and the control valve on the air inlet pipe 21 is started. The high-pressure gas enters the feed pipe 21 along the air inlet pipe 211, and enters the filter channel along the feed pipe 21, and further squeezes the filter cakes on both sides of the filter plate 5 with the high-pressure gas, thereby further reducing the water content of the filter cakes.
[0023] The synchronization rod 723 is welded from two solid round rods of different diameters, with the solid round rod of larger diameter being on top, so as to increase the rigidity of the synchronization rod 723 itself and prevent the synchronization rod 723 from being damaged during use.
[0024] Furthermore, a bearing is installed at the connection between the roller 51 and the deflection rod 71 to reduce the friction when the two rotate relative to each other.
[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A mud cake plate-and-frame filter press device, comprising a frame (1), a thrust plate (2), a clamping plate (3), a main beam (4), a filter plate (5) and a hydraulic push rod (6), characterized in that: The frame (1) is symmetrically provided with a main beam (4), the rear of the frame (1) is fixedly provided with a thrust plate (2), the head of the frame (1) is provided with a hydraulic push rod (6), the hydraulic push rod (6) has a built-in telescopic rod which penetrates the frame (1) and is located between the two main beams (4), and the clamping plate (3) is installed at one end of the built-in telescopic rod of the hydraulic push rod (6), a plurality of filter plates (5) are placed on the main beam (4) between the thrust plate (2) and the clamping plate (3) through rollers (51), the rollers (51) are symmetrically fixed on both sides of the filter plates (5), each filter plate (5) is provided with a scraper portion (7), the thrust plate (2) has a built-in through hole, and a feed pipe (21) and a liquid outlet pipe (22) are fixedly installed on one side of the through hole; The two filter plates (5) at the front and rear are respectively fixed to the side walls of the thrust plate (2) and the pressing plate (3); The scraper portion (7) comprises a deflection rod (71) inserted into the roller (51), an L-shaped plate (72) is sleeved on the outer side of the deflection rod (71), a support rod (74) is welded to the side wall of the L-shaped plate (72) arranged on one side of any filter plate (5) other than the head and tail filter plates (5), a counterweight (73) is welded to the outer wall of the deflection rod (71) near the end, a first chain (75) is welded to the center of the outer wall of the support rod (74), the end of the first chain (75) is fixed to the center of the bottom of the counterweight (73) and connected to the thrust plate (2); a second chain (751) is arranged at the bottom of the counterweight (73) on one side of the filter plate (5), and the end of the second chain (751) is welded to the bottom of the adjacent counterweight (73); The ends of the deflection rods (71) are welded with drive sleeves (76), the outer wall of the drive sleeves (76) is provided with arc-shaped extrusion holes (761) along the axial direction, and the arc-shaped extrusion holes (761) at the position of the filter plate (5) on one side connected to the thrust plate (2) are in opposite rotational directions to the arc-shaped extrusion holes (761) at other positions, the outer wall of the L-shaped plate (72) is welded with a rectangular strip (721), the outer side of the rectangular strip (721) is sleeved with a rectangular sleeve (722), the lower end surface of the rectangular sleeve (722) is welded with a synchronization rod (723), and a partial area of the synchronization rod (723) is inserted into the arc-shaped extrusion hole (761); Slide rails (77) are symmetrically mounted on both side walls of any filter plate (5), strip holes (771) are symmetrically opened on both sides of the slide rails (77), a displacement block (78) is slidably mounted in the slide rails (77), a driving arm (79) is hingedly connected between the end surface of the displacement block (78) and the upper end surface of the rectangular sleeve (722), placement grooves (781) are symmetrically opened on both sides of the displacement block (78), a movable head (70) is inserted in the placement groove (781), a transverse spring is arranged at the connection between the placement groove (781) and the movable head (70), a top rod (772) is mounted on the top of the movable head (70), and a scraper (773) is mounted on one side of the top rod (772).
2. A mud cake plate-and-frame filter press device according to claim 1, characterized in that: The movable head (70) comprises a block (701) inserted directly into the placement groove (781), a pin shaft (702) is embedded in the outer end surface of the block (701), a disc (703) is coaxially mounted at the end of the pin shaft (702), the outer ring of the disc (703) is preset with a welding position connected to the top rod (772), the outer ring of the disc (703) is provided with a tooth block (704) along its path, the two side walls of the filter plate (5) are symmetrically welded with transverse plates (705), the end surface of the transverse plate (705) is welded with a rack (706) in the vertical direction, and the side wall of the slide rail (77) is welded with a limit rod (708), and the limit rod (708) is closely attached to the outer wall of the top rod (772).
3. A mud cake plate-and-frame filter press device according to claim 2, characterized in that: A magnet (707) is embedded at the connection between the block (701) and the pin shaft (702), and two magnets (707) at the same movable head (70) attract each other.
4. A mud cake plate-and-frame filter press device according to claim 1, characterized in that: A support spring (774) is installed in the slide rail (77) along the vertical direction, and the top of the support spring (774) is fixed to the lower end surface of the displacement block (78).
5. The mud cake plate and frame filter press device according to claim 1, characterized in that: A baffle (724) is installed at the end of the rectangular strip (721) by means of bolts, and the horizontal height of the upper end surface of the baffle (724) is greater than the horizontal height of the upper end surface of the rectangular sleeve (722).
6. A mud cake plate and frame filter press device according to claim 1, characterized in that: An air intake pipe (211) is connected to the outer wall of the feed pipe (21), and the air intake pipe (211) is directly connected to the gas compressor. Control valves are installed on both the feed pipe (21) and the air intake pipe (211).
7. A mud cake plate and frame filter press device according to claim 1, characterized in that: The synchronization rod (723) is formed by welding two solid round rods of different diameters, with the solid round rod of larger diameter being located on top.
8. The mud cake plate and frame filter press device according to claim 1, characterized in that: A bearing is installed at the connection between the roller (51) and the deflection rod (71).