A pressure filter for treating clean coal

Abstract

This invention discloses a pressure filter for treating clean coal, relating to the field of filter presses. It addresses the limitations of existing filter presses, which require manual cleaning of the filter cloth after cleaning the coal cake, leading to reduced production efficiency and insufficient cleaning. The invention includes a cleaning mechanism; two sets of transmission wheels cooperate with a second transmission belt to enable a second motor to drive a fourth threaded rod to rotate synchronously; two sets of moving blocks, a hinged frame, and a fixed shaft at the top of the spray chamber cooperate to allow the hinged frame to retract or extend during the movement of the two sets of moving blocks towards the center or sides, thereby adjusting the height of the two spray chambers. By activating a water pump, cleaning fluid is easily delivered to the two spray chambers through two sets of retractable water pipes to clean both sides of the filter cloth, thus solving the problem of reduced production efficiency and insufficient cleaning caused by manual cleaning of the filter cloth.

Description

Technical Field

[0001] This invention relates to the field of filter presses, specifically a pressure filter for treating refined coal. Background Technology

[0002] A filter press is a commonly used solid-liquid separation device. It uses a special filter medium to apply pressure to the object to be filtered, causing the liquid to seep out. It is often used in industries such as metallurgy, pharmaceuticals, food, brewing, environmental protection, and ceramics. Filter presses have the advantages of high stability, convenient operation, safety, and labor saving.

[0003] Existing filter presses have limitations in use. After cleaning the coal cake, the filter cloth needs to be manually cleaned, which reduces production efficiency and the cleaning is not thorough enough. Furthermore, the cleaned coal slurry water cannot be filtered a second time, resulting in low utilization rate of the coal slurry water.

[0004] To address the problems mentioned above, we have designed a new type of pressure filter for treating clean coal. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing filter presses have limitations in use, requiring manual cleaning of the filter cloth after cleaning the coal cake, which leads to reduced production efficiency and insufficient cleaning. Therefore, this invention proposes a pressure filter press for clean coal processing.

[0006] The objective of this invention can be achieved through the following technical solution: a pressure filter for treating refined coal, comprising a housing, a mounting frame connected to the top of the housing, a transmission mechanism mounted on the mounting frame, a cleaning mechanism and a recycling mechanism mounted on the mounting frame, two sets of adjustment mechanisms mounted on the housing, the transmission mechanism including a first motor mounted on the left side wall of the mounting frame, the output end of the first motor fixedly connected to a first threaded rod, and the other end of the first threaded rod penetrating the right side wall of the mounting frame and connected to a drive wheel, the mounting frame... A second threaded rod is rotatably connected to the left inner wall, and two sets of third threaded rods are rotatably connected to the left inner wall of the housing. The second threaded rod and the two sets of third threaded rods all penetrate the right side wall of the housing and the mounting frame and are connected to a first driven wheel. A first electric telescopic rod is installed on the right side wall of the mounting frame. A sliding groove is opened on the right side wall of the mounting frame, and a second driven wheel is slidably connected in the sliding groove through a sliding rod. The extension end of the first electric telescopic rod is fixedly connected to the surface of the sliding rod. The driving wheel, the second driven wheel and the first driven wheel are connected by a first transmission belt.

[0007] The cleaning mechanism includes an adjusting plate threadedly connected to the outer surface of a second threaded rod. A first hydraulic cylinder is mounted on the top of the adjusting plate, and the extension end of the first hydraulic cylinder passes through the adjusting plate and is fixedly connected to a mounting plate. Clamping mechanisms are provided on both the front and rear sides of the bottom of the mounting plate. Connecting frames are fixedly connected to the left and right side walls of the mounting plate. A second motor is mounted on the front side wall of the left connecting frame, and a fourth threaded rod is rotatably connected to the front inner wall of the right connecting frame. The output end of the second motor and the other end of the fourth threaded rod both pass through two sets of connecting frames and are fixedly connected to transmission wheels. Furthermore, a second transmission belt connects the two sets of transmission wheels. The output end of the second motor and the outer surface of the fourth threaded rod are both threadedly connected to two sets of moving blocks, and the two sets of moving blocks have opposite internal threads. A water spray chamber is provided below each of the two sets of moving blocks. The top of each of the two sets of water spray chambers is connected to a fixed shaft through two sets of fixed blocks. The two sets of moving blocks and the water spray chambers are movably hinged to each other through multiple sets of hinge blocks. A water pump is installed on the top of the adjusting plate. Retractable water pipes are connected to the left and right side walls of the water pump, and the other ends of the two sets of retractable water pipes are connected to the two sets of water spray chambers.

[0008] In a preferred embodiment of the present invention, the two sets of adjustment mechanisms include two sets of adjustment blocks. The two sets of adjustment blocks are threadedly connected to the outer surfaces of the two sets of third threaded rods. A second electric telescopic rod is installed on the top of each of the two sets of adjustment blocks. A connecting block is fixedly connected to the top of each of the two sets of second electric telescopic rods. A connecting rod is fixedly connected to the top of each of the two sets of connecting blocks. A sliding block is slidably connected to each of the two sets of connecting rods. A spring is provided between the bottom of each of the two sets of sliding blocks and the top of each of the two sets of connecting blocks. A clamping frame is fixedly connected to the rear sidewall of each of the two sets of sliding blocks via an extension rod. Two sets of corrugated plates are fixedly connected between the left and right inner walls of the housing.

[0009] In a preferred embodiment of the present invention, the recycling mechanism includes a movable frame, which is threadedly connected to the outer surface of a first threaded rod. A third motor is installed on the rear side wall of the movable frame, and a shaftless auger is connected to the outer surface of the output end of the third motor. A circular groove that mates with the shaftless auger is provided on the top of the movable frame. A recycling hose is connected to the front side wall of the movable frame, and the shaftless auger extends inside the recycling hose.

[0010] In a preferred embodiment of the present invention, the two sets of clamping mechanisms include two sets of third electric telescopic rods. The two sets of third electric telescopic rods are respectively installed on the front and rear sides of the top of the mounting plate. Grooves are provided on the front and rear sides of the bottom of the mounting plate. Clamping arms are movably hinged in the two sets of grooves through a rotating shaft. Fixing rods are inserted at the intersection of the two sets of clamping arms, and the other ends of the two sets of fixing rods are fixedly connected to the outer surface of the extension ends of the two sets of third electric telescopic rods.

[0011] In a preferred embodiment of the present invention, a sludge inlet is connected to the left side wall of the housing, and the other end of the recovery hose is connected to the sludge inlet. An air inlet is connected to the left side wall of the mounting bracket. A second hydraulic cylinder is installed on the right side wall of the housing. The extension end of the second hydraulic cylinder passes through the right side wall of the housing and is fixedly connected to a push plate. Sliding frames are connected to the front and rear sides of the left and right inner walls of the housing, and multiple sets of filter cloths are arranged between the two sets of sliding frames. A drop tray is provided at the bottom of the housing.

[0012] In a preferred embodiment of the present invention, the two sets of clamping frames and the two sets of clamping arms are located on the same vertical horizontal line. Sliding seats are fixedly connected to the front and rear side walls of the filter cloth. Fixing grooves that cooperate with the extension ends of the two sets of sliding seats are provided on both sets of clamping frames. Clamping grooves that cooperate with the two sets of clamping arms are provided on both sets of sliding seats.

[0013] In a preferred embodiment of the present invention, a limiting block is fixedly connected to one end of each of the two sets of movable blocks that are close to each other. A limiting groove is provided on the inner wall of one side of each of the two sets of connecting frames that are close to each other, which cooperates with the two sets of limiting blocks. The two sets of limiting blocks are slidably connected in the two sets of limiting grooves. Multiple sets of nozzles are installed on the side wall of one end of each of the two sets of water spray chambers that are close to each other. The range of the multiple sets of nozzles installed is equal to the range of the filter cloth that needs to be cleaned.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By setting up a cleaning mechanism, the two sets of transmission wheels cooperate with the second transmission belt to realize the synchronous rotation of the fourth threaded rod driven by the second motor. The two sets of moving blocks, the hinge frame and the fixed shaft at the top of the water spray chamber cooperate to realize the retraction or extension of the hinge frame during the movement of the two sets of moving blocks to the middle or both sides, thereby realizing the adjustment of the height of the two sets of water spray chambers. By starting the water pump, the cleaning liquid can be delivered to the two sets of water spray chambers through the two sets of retractable water pipes to clean both sides of the filter cloth. This solves the problem that the existing filter press has limitations in use, which requires manual cleaning of the filter cloth after cleaning the coal cake, resulting in reduced production efficiency and insufficient cleaning.

[0016] 2. Equipped with an adjustment mechanism, the two sets of second electric telescopic rods can be extended or retracted to easily adjust the height of the two sets of clamping frames. This allows the clamping frames to move to the left, circling the sliding seats on both sides of the filter cloth. Through the cooperation of the two sets of extension rods and two sets of corrugated plates, the two sets of adjusting blocks can move up and down repeatedly on the inner walls of the two sets of corrugated plates as the two sets of third threaded rods move to the right. This causes the two sets of sliding blocks to stretch the two sets of springs upwards. The springs then rebound, causing the filter cloth to shake and sway up and down simultaneously with the clamping frames moving to the right, shaking off the coal slurry cake formed on the filter cloth, thus saving manpower. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is an embodiment of the present invention. Figure 1 The left view;

[0020] Figure 3 This is an embodiment of the present invention. Figure 1 A structural schematic diagram of the right view;

[0021] Figure 4 This is an embodiment of the present invention. Figure 1 The first partial image;

[0022] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged view of the structure at point A in the middle;

[0023] Figure 6 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention;

[0024] Figure 7 This is an embodiment of the present invention. Figure 6 The first partial view;

[0025] Figure 8 This is an embodiment of the present invention. Figure 6 The second partial image;

[0026] Figure 9 This is a schematic diagram of the recycling mechanism according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of embodiment 06 of the present invention.

[0028] 1. Housing; 111. First motor; 112. First threaded rod; 113. Drive wheel; 114. Second threaded rod; 115. Third threaded rod; 116. First driven wheel; 117. First electric telescopic rod; 118. Slide groove; 119. Second driven wheel; 120. First transmission belt; 121. Adjusting block; 122. Second electric telescopic rod; 123. Connecting block; 124. Connecting rod; 125. Sliding block; 126. Spring; 127. Clamping frame; 128. Corrugated plate; 2. Mounting frame; 3. Sludge inlet; 4. 5. Air inlet; 6. Push plate; 7. Filter cloth; 8. Drop tray; 9. Cleaning mechanism; 10. Adjusting plate; 11. First hydraulic cylinder; 12. Mounting plate; 13. Connecting frame; 14. Third electric telescopic rod; 15. Clamping arm; 16. Second motor; 17. Fourth threaded rod; 18. Drive wheel; 19. Second drive belt; 20. Moving block; 21. Water spray chamber; 22. Articulated frame; 23. Water pump; 44. Recycling hose; 55. Moving frame; 66. Third motor; 77. Shaftless auger. Detailed Implementation

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0030] Please see Figures 1-10As shown, a pressure filter for treating refined coal includes a housing 1 with a mounting frame 2 connected to the top. The mounting frame 2 has a transmission mechanism, a cleaning mechanism 8, and a recovery mechanism. The housing 1 has two sets of adjustment mechanisms. The transmission mechanism includes a first motor 111 mounted on the left side wall of the mounting frame 2. The output end of the first motor 111 is fixedly connected to a first threaded rod 112, and the other end of the first threaded rod 112 passes through the right side wall of the mounting frame 2 and is connected to a drive wheel 113. A second threaded rod 114 is rotatably connected to the left inner wall of the mounting frame 2. Two sets of third threaded rods 115 are rotatably connected to the left inner wall of the housing 1. The second threaded rod 114 and the two sets of third threaded rods 115 all pass through the right side walls of the housing 1 and the mounting frame 2 and are connected to a first drive wheel 113. The driving wheel 116 and the right side wall of the mounting frame 2 are equipped with a first electric telescopic rod 117. The right side wall of the mounting frame 2 is provided with a groove 118, and a second driven wheel 119 is slidably connected in the groove 118 through a sliding rod. The extension end of the first electric telescopic rod 117 is fixedly connected to the surface of the sliding rod. The driving wheel 113, the second driven wheel 119 and the first driven wheel 116 are connected by a first transmission belt 120. When the first electric telescopic rod 117 is activated to extend, the second driven wheel 119 slides upward in the groove 118. When it moves to a certain position, the second driven wheel 119 presses the first transmission belt 120 upward. At this time, the first transmission belt 120 is in a taut state, thereby realizing that the driving wheel 113 drives multiple sets of first driven wheels 116 through the second driven wheel 119.

[0031] The cleaning mechanism 8 includes an adjusting plate 811, which is threadedly connected to the outer surface of the second threaded rod 114. A first locking block is fixedly connected to the rear side wall of the adjusting plate 811. A first locking groove is provided on the front inner wall of the mounting bracket 2 to cooperate with the first locking block, and the first locking block is slidably connected in the first locking groove to limit the movement. A first hydraulic cylinder 812 is installed on the top of the adjusting plate 811. The extension end of the first hydraulic cylinder 812 passes through the adjusting plate 811 and is fixedly connected to a mounting plate 813. Clamping mechanisms are provided on both the front and rear sides of the bottom of the mounting plate 813. Connecting brackets 814 are fixedly connected to both the left and right side walls of component 3. Both sets of connecting brackets 814 are inverted L-shaped, which can provide protection during the cleaning process. A second motor 817 is installed on the front side wall of the left connecting bracket 814, and a fourth threaded rod 818 is rotatably connected to the front inner wall of the right connecting bracket 814. The output end of the second motor 817 is also a threaded rod. The output end of the second motor 817 and the other end of the fourth threaded rod 818 both pass through the two sets of connecting brackets 814 and are fixedly connected to a transmission wheel 819. A second transmission belt 8 is connected between the two sets of transmission wheels 819. 20. Two sets of moving blocks 821 are threadedly connected to the output end of the second motor 817 and the outer surface of the fourth threaded rod 818. The two sets of moving blocks 821 have opposite internal threads. A water spray chamber 822 is located below each set of moving blocks 821. A fixed shaft is connected to the top of each set of water spray chambers 822 via two sets of fixed blocks. A hinge frame 823 is movably hinged between each set of moving blocks 821 and the water spray chamber 822 via multiple sets of hinge blocks. A hinge block is fixedly connected to the lower end of each set of moving blocks 821. Two sliding connections are made to the fixed shafts at the top of each set of water spray chambers 822. The two sets of hinge blocks 823 are movably hinged to the hinge blocks at the bottom of the two sets of movable blocks 821 and the two sets of hinge blocks on the top fixed shaft of the two sets of water spray chambers 822 on the upper and lower sides respectively. A water pump 824 is installed on the top of the adjusting plate 811. A water guide pipe is connected to the rear side wall of the water pump 824. The water guide pipe is connected to the water source and is made of soft material to facilitate the delivery of cleaning fluid to the two sets of water spray chambers 822 through the two sets of retractable water pipes. Retractable water pipes are connected to the left and right side walls of the water pump 824, and the other end of the two sets of retractable water pipes is connected to the two sets of water spray chambers 822.

[0032] It should be noted that, firstly, the first hydraulic cylinder 812 is activated to extend, causing the mounting plate 813 to move downwards. Once it reaches a certain position, it is clamped by two sets of clamping mechanisms via sliding seats on both sides of the single filter cloth 6. Then, the first hydraulic cylinder 812 is activated to retract, lifting the single filter cloth 6. At this time, the water pump 824 is activated, drawing cleaning fluid through a water guide pipe. The cleaning fluid is then transported to two sets of spray chambers 822 through two sets of retractable water pipes to clean the single filter cloth 6. During the cleaning process, the second motor 817 is activated to rotate in both directions, causing the output of the second motor 817 to be connected to the second transmission belt. 820 drives the fourth threaded rod 818 to rotate in both directions. At this time, the two sets of moving blocks 821 move to the center or to both sides of the output end of the second motor 817 and the outer surface of the fourth threaded rod 818, respectively. When the two sets of moving blocks 821 move to both sides, the two sets of lower hinge blocks slide to both sides on the fixed shaft at the top of the water spray chamber 822, thereby causing the water spray chamber 822 to move upward. When the two sets of moving blocks 821 move to the center, the two sets of lower hinge blocks slide to the center on the fixed shaft, thereby causing the water spray chamber 822 to move downward. This realizes the up-and-down reciprocating motion of the two sets of water spray chambers 822, which improves the cleaning effect on the filter cloth 6.

[0033] Furthermore, the two sets of adjustment mechanisms include two sets of adjustment blocks 121, both sets of adjustment blocks 121 being threadedly connected to the outer surfaces of two sets of third threaded rods 115. Two sets of limiting rods are fixedly connected between the left and right inner walls of the housing 1, and both sets of limiting rods pass through the two sets of adjustment blocks 121, serving as limiting rods. A second electric telescopic rod 122 is installed on the top of each set of adjustment blocks 121, and a connecting block 123 is fixedly connected to the top of each set of second electric telescopic rods 122. A connecting rod 124 is fixedly connected to the top of each set of connecting blocks 123, and a sliding block 125 is slidably connected to each set of connecting rods 124. A spring 126 is provided between the bottom of each set of sliding blocks 125 and the top of each set of connecting blocks 123, and the upper and lower ends of each set of springs 126 are respectively fixed. Connected to the bottom of two sets of sliding blocks 125 and the top of two sets of connecting blocks 123, the two sets of springs 126 are compressed, which can cause the two sets of clamping frames 127 to drive the filter cloth 6 to shake up and down. The clamping frames 127 are fixedly connected to the rear side walls of the two sets of sliding blocks 125 by extension rods. When the second electric telescopic rod 122 extends, the extension rod moves upward from the inner wall of the corrugated plate 128. When the clamping frame 127 clamps the filter cloth 6, the extension rod abuts against the inner wall of the corrugated plate 128, thereby realizing the up and down shaking of the filter cloth 6. Two sets of corrugated plates 128 are fixedly connected between the left and right inner walls of the housing 1. Through the two sets of corrugated plates 128, the two sets of extension rods can drive the two sets of springs 126 to stretch up and down during the movement of the adjusting block 121 from left to right.

[0034] It should be noted that, firstly, the first electric telescopic rod 117 is extended, causing the second driven wheel 119 to slide upward within the slide groove 118. When it moves to a certain position, the second driven wheel 119 presses upward against the first transmission belt 120, at which point the first transmission belt 120 is taut. At this time, the driving wheel 113 drives multiple sets of first driven wheels 116 through the second driven wheel 119, and the first motor 111 is started to reverse. At this time, the two sets of adjusting blocks 121 move to the left on the two sets of third threaded rods 115. Then, the two sets of second electric telescopic rods 122 are started to extend, so that the two sets of clamping frames 127 pass over the sliding seats on both sides of the multiple sets of filter cloths 6. When they move to the gap between the two sets of filter cloths 6, the first motor 111 is turned off, and the two sets of second electric telescopic rods 122 are started to extend. When the electric telescopic rod 122 retracts, the fixing grooves on the two sets of clamping frames 127 are aligned with the extension ends of the sliding seats on both sides of the filter cloth 6 at the same horizontal line. At this time, the first motor 111 is started to rotate forward, causing the two sets of adjusting blocks 121 to move to the right on the two sets of third threaded rods 115. This causes the two sets of clamping frames 127 to clamp the extension ends of the sliding seats on both sides of the filter cloth 6 and move them to the right. During the movement to the right, the two sets of extension rods move up and down repeatedly on the inner walls of the two sets of corrugated plates 128, causing the two sets of sliding blocks 125 to stretch the two sets of springs 126 upward. The two sets of springs 126 rebound after being stretched, thus achieving the effect of the two sets of clamping frames 127 moving to the right while driving the single set of filter cloth 6 to shake up and down, shaking off the coal slime cake formed on the filter cloth 6, saving manpower.

[0035] Furthermore, the recycling mechanism includes a movable frame 911, which is threadedly connected to the outer surface of the first threaded rod 112. A second locking block is fixedly connected to the rear side wall of the movable frame 911. A second locking groove that mates with the second locking block is opened on the rear inner wall of the mounting frame 2, and the second locking block is slidably connected in the second locking groove, which serves as a limit. A third motor 912 is installed on the rear side wall of the movable frame 911. A shaftless auger 913 is connected to the outer surface of the output end of the third motor 912. The length of the output end of the third motor 912 is equal to the length of the circular groove. A circular groove that mates with the shaftless auger 913 is opened on the top of the movable frame 911. Inclined grooves are provided on both sides of the circular groove to facilitate the diversion of the washed coal slurry water into the circular groove for transportation. A recycling hose 9 is connected to the front side wall of the movable frame 911, and the shaftless auger 913 extends inside the recycling hose 9.

[0036] It should be noted that when the cleaning mechanism cleans a single set of filter cloth 6, the first electric telescopic rod 117 is activated to retract, causing the second driven wheel 119 to slide downwards. At this time, the driving wheel 113 will not drive the multiple sets of first driven wheels 116. Then, the first motor 111 is activated to rotate forward, causing the moving frame 911 to move to the right on the first threaded rod 112. When it moves to the bottom of the two clamping mechanisms, the first motor 111 is turned off. When the cleaning mechanism 8 cleans the coal sludge impurities on the single set of filter cloth 6, the wastewater is transported into the circular trough through the inclined troughs on both sides of the circular trough. Then, it is transported into the recovery hose 9 through the shaftless auger 913, and then transported back to the filter cloth 6 for secondary filtration through the recovery hose 9, which improves the utilization rate of coal sludge water.

[0037] Furthermore, the two clamping mechanisms include two sets of third electric telescopic rods 815, which are respectively installed on the front and rear sides of the top of the mounting plate 813. Grooves are provided on the front and rear sides of the bottom of the mounting plate 813. Clamping arms 816 are movably hinged in the two sets of grooves through a rotating shaft. Fixed rods are inserted at the intersection of the two sets of clamping arms 816. Each set of clamping arms 816 consists of two sets of clamping plates. Moving slots are provided on the two sets of clamping plates. Each set of fixed rods is inserted at the intersection of the two sets of moving slots, and the other end of the two sets of fixed rods is fixedly connected to the outer surface of the extension end of the two sets of third electric telescopic rods 815.

[0038] It should be noted that when the first hydraulic cylinder 812 is activated to extend, the mounting plate 813 moves downward. When it moves to a certain position, the two sets of third electric telescopic rods 815 are activated to retract, which causes the extended ends of the two sets of third electric telescopic rods 815 to drive the two sets of fixed rods to move upward. This causes the two sets of fixed rods to slide upward at the intersection of the two sets of clamping arms 816. While sliding upward, the bottom of the two sets of clamping arms 816 moves towards the center through the rotating shaft, clamping and fixing the filter cloth 6 through the clamping grooves of the sliding seats on both sides of the filter cloth 6, so that the cleaning mechanism 8 can clean it afterward.

[0039] Furthermore, a sludge inlet 3 is connected to the left side wall of the housing 1, and the other end of the recovery hose 9 is connected to the sludge inlet 3. An air inlet 4 is connected to the left side wall of the mounting bracket 2. A second hydraulic cylinder is installed on the right side wall of the housing 1. The extension end of the second hydraulic cylinder passes through the right side wall of the housing 1 and is fixedly connected to a push plate 5. Sliding frames are connected to the front and rear sides of the left and right inner walls of the housing 1, and multiple sets of filter cloths 6 are arranged between the two sets of sliding frames. A drop tray 7 is provided at the bottom of the housing 1.

[0040] It should be noted that coal slurry is conveyed to sludge inlet 3 and compressed gas is conveyed to air inlet 4. By activating the second hydraulic cylinder, the push plate 5 is used to squeeze multiple sets of filter cloths 6. At this time, the multiple sets of filter cloths 6 slide on the sliding frame. When the coal slurry cake is removed, the drop tray 7 at the bottom of the housing 1 is opened, so that the removed coal slurry cake falls through the drop tray 7 to the next process for processing.

[0041] Furthermore, the two sets of clamping frames 127 and the two sets of clamping arms 816 are located on the same vertical horizontal line. Sliding seats are fixedly connected to the front and rear side walls of the filter cloth 6. Each set of clamping frames 127 has a fixing groove that cooperates with the extension end of the two sets of sliding seats, and the length of the fixing groove is slightly larger than the extension end of the two sets of sliding seats. Each set of sliding seats has a clamping groove that cooperates with the two sets of clamping arms 816.

[0042] It should be noted that when the first electric telescopic rod 117 is activated to extend, the second driven wheel 119 slides upward in the slide groove 118. When it moves to a certain position, the second driven wheel 119 presses upward against the first transmission belt 120. At this time, the first transmission belt 120 is in a taut state. At this time, the driving wheel 113 drives multiple sets of first driven wheels 116 through the second driven wheel 119. At this time, the second threaded rod 114 and the two sets of third threaded rods 115 rotate synchronously. Since the two sets of clamping frames 127 and the two sets of clamping arms 816 are on the same vertical horizontal line, the two sets of clamping frames 127 and the two sets of clamping arms 816 can always be kept on the same vertical horizontal line, which improves the accuracy.

[0043] Furthermore, each of the two sets of movable blocks 821 has a fixed limit block at one end that is close to the other. Each of the two sets of connecting frames 814 has a limit groove on one side that is close to the other, which cooperates with the two sets of limit blocks. The two sets of limit blocks are slidably connected in the two sets of limit grooves. Each of the two sets of spray chambers 822 has multiple spray nozzles installed on one side wall that is close to the other. The range of the multiple spray nozzles is equal to the range of the filter cloth 6 that needs to be cleaned.

[0044] It should be noted that by sliding the two sets of limit blocks within the two sets of limit grooves, the limit function can be achieved, ensuring that when the second motor 817 is started and rotated in both directions, the two sets of moving blocks 821 can move towards the middle or both sides. By setting the range of multiple nozzle installations to be equal to the range of the filter cloth 6 that needs to be cleaned, the cleaning effect can be guaranteed.

[0045] When using this invention:

[0046] Step 1: First, the second hydraulic cylinder is activated, causing the pusher plate 5 to squeeze multiple sets of filter cloth 6. Then, coal slurry is transported through the sludge inlet 3, and compressed air is transported through the air inlet 4. After the coal cake is formed, the second hydraulic cylinder is activated to retract. First, the position of a single set of filter cloth 6 is adjusted using the adjusting mechanism. The first electric telescopic rod 117 is activated to extend, causing the second driven wheel 119 to slide upwards within the slide groove 118. When it moves to a certain position, the second driven wheel 119 presses upwards against the first transmission belt 120, at which point the first transmission belt 120 is taut. At this point, the driving wheel 113 drives multiple sets of first driven wheels 116 through the second driven wheel 119. The first motor 111 is activated to reverse, causing the two sets of adjusting blocks 121 to move to the left on the two sets of third threaded rods 115. Then, the two sets of second electric telescopic rods 122 are activated to extend, causing the two sets of clamping frames 127 to... The filter cloth 6 passes over the sliding seats on both sides and then moves to the gap between the two filter cloths 6. At this time, the first motor 111 is turned off and the two sets of second electric telescopic rods 122 are started to retract, so that the fixing grooves on the two sets of clamping frames 127 are on the same horizontal line as the extension ends of the sliding seats on both sides of the filter cloth 6. At this time, the first motor 111 is started to rotate forward, so that the two sets of adjusting blocks 121 move to the right on the two sets of third threaded rods 115. This causes the two sets of clamping frames 127 to clamp the extension ends of the sliding seats on both sides of the filter cloth 6 and drive them to move to the right. During the movement to the right, the two sets of extension rods move up and down repeatedly on the inner wall of the two sets of corrugated plates 128, so that the two sets of sliding blocks 125 stretch the two sets of springs 126 upward. The two sets of springs 126 are stretched and rebound, so that while the two sets of clamping frames 127 move to the right, they drive the single filter cloth 6 to shake up and down, shaking off the coal slurry cake formed on the filter cloth 6.

[0047] Step Two: The first hydraulic cylinder 812 is then extended, causing the mounting plate 813 to move downwards to a certain position. There, it is clamped by two sets of clamping mechanisms via sliding seats on both sides of the single filter cloth 6. The first hydraulic cylinder 812 is then retracted, lifting the single filter cloth 6. At this point, the water pump 824 is activated, drawing cleaning fluid through a water pipe. The cleaning fluid is then delivered to the two sets of spray chambers 822 through two sets of retractable water pipes to clean the single filter cloth 6. During the cleaning process, the second motor 817 is activated, rotating in both directions, causing the output of the second motor 817 to be connected to the second transmission belt 82. 0 drives the fourth threaded rod 818 to rotate in both directions. At this time, the two sets of moving blocks 821 move to the middle or to both sides of the output end of the second motor 817 and the outer surface of the fourth threaded rod 818 respectively. When the two sets of moving blocks 821 move to both sides, the two sets of lower hinge blocks slide to both sides on the fixed shaft at the top of the water spray chamber 822, thereby causing the water spray chamber 822 to move upward. When the two sets of moving blocks 821 move to the middle, the two sets of lower hinge blocks slide to the middle on the fixed shaft, thereby causing the water spray chamber 822 to move downward. This realizes the up-and-down reciprocating motion of the two sets of water spray chambers 822, which improves the cleaning effect on the filter cloth 6.

[0048] Step 3: When the cleaning mechanism cleans a single set of filter cloth 6, the first electric telescopic rod 117 is activated to retract, causing the second driven wheel 119 to slide downwards. At this time, the driving wheel 113 will not drive the multiple sets of first driven wheels 116. Then, the first motor 111 is activated to rotate forward, causing the moving frame 911 to move to the right on the first threaded rod 112. When it moves to the bottom of the two clamping mechanisms, the first motor 111 is turned off. When the cleaning mechanism 8 cleans the coal sludge impurities on the single set of filter cloth 6, the wastewater is transported into the circular trough through the inclined grooves on both sides of the circular trough. Then, it is transported into the recovery hose 9 through the shaftless auger 913, and then transported back into the filter cloth 6 through the recovery hose 9 for secondary filtration, which improves the utilization rate of coal sludge water.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pressure filter for treating refined coal, comprising a housing (1), a mounting frame (2) connected to the top of the housing (1), a transmission mechanism provided on the mounting frame (2), a cleaning mechanism (8) and a recycling mechanism provided on the mounting frame (2), and two sets of adjustment mechanisms provided on the housing (1), characterized in that, The transmission mechanism includes a first motor (111), which is mounted on the left side wall of the mounting frame (2). The output end of the first motor (111) is fixedly connected to a first threaded rod (112), and the other end of the first threaded rod (112) passes through the right side wall of the mounting frame (2) and is connected to a drive wheel (113). A second threaded rod (114) is rotatably connected to the left inner wall of the mounting frame (2), and two sets of third threaded rods (115) are rotatably connected to the left inner wall of the housing (1). The second threaded rod (114) and the two sets of third threaded rods (115) are connected to each other. All of them penetrate the right side wall of the housing (1) and the mounting frame (2) and are connected to the first driven wheel (116). The right side wall of the mounting frame (2) is equipped with a first electric telescopic rod (117). The right side wall of the mounting frame (2) is provided with a sliding groove (118), and the second driven wheel (119) is slidably connected in the sliding groove (118) through a sliding rod. The extension end of the first electric telescopic rod (117) is fixedly connected to the surface of the sliding rod. The driving wheel (113), the second driven wheel (119) and the first driven wheel (116) are connected by a first transmission belt (120). The cleaning mechanism (8) includes an adjusting plate (811), which is threaded to the outer surface of a second threaded rod (114). A first hydraulic cylinder (812) is mounted on the top of the adjusting plate (811). The extension end of the first hydraulic cylinder (812) passes through the adjusting plate (811) and is fixedly connected to an mounting plate (813). Clamping mechanisms are provided on both the front and rear sides of the bottom of the mounting plate (813). Connecting frames (814) are fixedly connected to the left and right side walls of the mounting plate (813). The connecting frames (814) include a left connecting frame and a right connecting frame. A second motor (817) is mounted on the front side wall of the left connecting frame. A fourth threaded rod (818) is rotatably connected to the front inner wall of the right connecting frame. The output end of the second motor (817) and the other end of the fourth threaded rod (818) both pass through the two sets of connecting frames (814). A transmission wheel (819) is fixedly connected to the two sets of transmission wheels (819), and a second transmission belt (820) is connected between the two sets of transmission wheels (819). The output end of the second motor (817) and the outer surface of the fourth threaded rod (818) are both threadedly connected to two sets of moving blocks (821), and the two sets of moving blocks (821) are provided with opposite internal threads. A water spray chamber (822) is provided below each of the two sets of moving blocks (821). The top of each of the two sets of water spray chambers (822) is connected to a fixed shaft through two sets of fixed blocks. The two sets of moving blocks (821) and the water spray chambers (822) are movably hinged to each other through multiple sets of hinge blocks and a hinge frame (823). A water pump (824) is installed on the top of the adjusting plate (811). The left and right side walls of the water pump (824) are connected to retractable water pipes, and the other end of each of the two sets of retractable water pipes is connected to the two sets of water spray chambers (822).

2. A pressure filter for treating refined coal according to claim 1, characterized in that, The two sets of adjustment mechanisms include two sets of adjustment blocks (121). Both sets of adjustment blocks (121) are threadedly connected to the outer surfaces of two sets of third threaded rods (115). A second electric telescopic rod (122) is installed on the top of each set of adjustment blocks (121). A connecting block (123) is fixedly connected to the top of each set of second electric telescopic rods (122). A connecting rod (124) is fixedly connected to the top of each set of connecting blocks (123). A sliding block (125) is slidably connected to each set of connecting rods (124). A spring (126) is provided between the bottom of each set of sliding blocks (125) and the top of each set of connecting blocks (123). A clamping frame (127) is fixedly connected to the rear side wall of each set of sliding blocks (125) via an extension rod. Two sets of corrugated plates (128) are fixedly connected between the left and right inner walls of the housing (1).

3. A pressure filter for treating refined coal according to claim 2, characterized in that, The recycling mechanism includes a movable frame (911), which is threaded to the outer surface of the first threaded rod (112). A third motor (912) is installed on the rear side wall of the movable frame (911). A shaftless auger (913) is connected to the outer surface of the output end of the third motor (912). A circular groove that mates with the shaftless auger (913) is provided on the top of the movable frame (911). A recycling hose (9) is connected to the front side wall of the movable frame (911), and the shaftless auger (913) extends inside the recycling hose (9).

4. A pressure filter for treating refined coal according to claim 3, characterized in that, The two sets of clamping mechanisms include two sets of third electric telescopic rods (815). The two sets of third electric telescopic rods (815) are respectively installed on the front and rear sides of the top of the mounting plate (813). The front and rear sides of the bottom of the mounting plate (813) are provided with grooves. Clamping arms (816) are movably hinged in the two sets of grooves through a rotating shaft. Fixed rods are inserted at the intersection of the two sets of clamping arms (816), and the other end of the two sets of fixed rods is fixedly connected to the outer surface of the extension end of the two sets of third electric telescopic rods (815).

5. A pressure filter for treating refined coal according to claim 4, characterized in that, The left side wall of the housing (1) is connected to a sludge inlet (3), and the other end of the recycling hose (9) is connected to the sludge inlet (3). The left side wall of the mounting bracket (2) is connected to an air inlet (4). The right side wall of the housing (1) is equipped with a second hydraulic cylinder. The extension end of the second hydraulic cylinder passes through the right side wall of the housing (1) and is fixedly connected to a push plate (5). The front and rear sides of the left and right inner walls of the housing (1) are connected to sliding frames, and multiple sets of filter cloths (6) are arranged between the two sets of sliding frames. The bottom of the housing (1) is equipped with a drop tray (7).

6. A pressure filter for treating clean coal according to claim 5, characterized in that, The two sets of clamping frames (127) and the two sets of clamping arms (816) are located on the same vertical horizontal line. Sliding seats are fixedly connected to the front and rear side walls of the filter cloth (6). The two sets of clamping frames (127) are provided with fixing grooves that cooperate with the extension ends of the two sets of sliding seats. The two sets of sliding seats are provided with clamping grooves that cooperate with the two sets of clamping arms (816).

7. A pressure filter for treating refined coal according to claim 6, characterized in that, Both sets of movable blocks (821) are fixedly connected to a limiting block at one end. Both sets of connecting frames (814) are provided with a limiting groove on the inner wall of one side that is close to each other, which cooperates with the two sets of limiting blocks. Both sets of limiting blocks are slidably connected in the two sets of limiting grooves. Both sets of spray nozzles are installed on the side wall of one end that is close to each other. The range of the multiple sets of spray nozzles is equal to the range of the filter cloth (6) that needs to be cleaned.

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