Sludge discharging device of plate-and-frame filter press

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a sludge discharging device of a plate-and-frame filter press, which comprises a support frame, an electric control cabinet mounted on the support frame, a guide plate mounted on the support frame, a guide block assembled in a guide groove, a sludge bucket mounted on the guide block, a fixed plate mounted on the support frame, and a sludge discharging device mounted on the fixed plate. A pulse electromagnet is installed on the bottom side of the fixing plate, a lifting plate is installed on the side wall of the mud bucket, an iron sheet is installed on the lifting plate, a plurality of springs are installed between the lifting plate and the fixing plate, after a mud cake falls into the mud bucket, the mud bucket vibrates at high frequency, and in the vibration process of the mud bucket, mud clamped or accumulated inside is shaken off, so that the mud cake is prevented from falling off. The mud can rapidly fall onto the conveying belt, then the conveying belt drives the mud to move, the mud is poured into the collecting box, according to the structure, the mud is shaken off through vibration of the mud bucket, the situation that mud cakes are clamped in the mud bucket due to the size is avoided, and the discharging smoothness can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a mud discharging device for a plate and frame filter press. Background Art

[0002] In sewage treatment projects, a plate and frame filter press is usually used to separate solids and liquids from sewage. The plate and frame filter press is a device that consists of filter frames to form a filter chamber. Under the action of pressure, it uses a filter medium to separate solids from liquids. After the plate and frame filter press finishes filtering, it is necessary to remove the filter cake between the filter frames, so a mud discharging device is required.

[0003] A Chinese patent with the authorization announcement number of CN 211069161 U discloses an automatic mud discharging device for a plate and frame filter press, which includes a bracket, a guide rail, a filter frame, a machine head, a setscrew, a gripper, a mud pushing brush, a first slide rail, a second slide rail and a controller. When the utility model performs the mud discharging operation, first, the controller controls the setscrew to drive the machine head to retract and loosen the filter frames pressed together; then the controller controls the gripper to move the gripper to one side of the filter frame. After the gripper grabs the support arm on the side of the filter frame, the filter frame is pulled out; at the same time, the controller controls the mud pushing brush to align the mud pushing brush with the edge of the pulled-out filter frame, and then controls the mud pushing brush to move downward to the lower edge of the filter frame to push out the filter cake in the filter frame; finally, the mud pushing brush is retracted, and the gripper places the filter frame after mud discharging on the other side and then releases it, completing one mud discharging operation; next, the above operations are repeated until the mud discharging of all filter frames is completed. The utility model can realize the automation of the filter frame mud discharging process, reduce manual labor and improve work efficiency.

[0004] During the process of discharging the filter cake by the existing mud discharging device, since the mud hopper is a fixed structure, the filter cake is easily stuck in the mud hopper due to its volume, resulting in poor fluidity of the device for discharging the material; therefore, a mud discharging device for a plate and frame filter press is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a mud discharging device for a plate and frame filter press.

[0006] The technical solution adopted by the present utility model to solve its technical problems is a mud discharging device for a plate and frame filter press, including a support frame, on which an electric control cabinet is installed, a guide plate is installed on the support frame, a guide groove is formed in the guide plate, a guide block is assembled in the guide groove, a mud hopper is installed on the guide block, a fixing plate is installed on the support frame, a pulse electromagnet is installed on the bottom side of the fixing plate, the pulse electromagnet is connected to the electric control cabinet through a circuit, a lifting plate is installed on the side wall of the mud hopper, an iron sheet is installed on the lifting plate, a plurality of springs are installed between the lifting plate and the fixing plate, an installation frame is placed below the mud hopper, a first rotating shaft and a second rotating shaft are rotatably installed on the installation frame, a first motor is installed on the side wall of the installation frame through a machine base, an output shaft of the first motor is connected to the first rotating shaft, rolling rollers are fixedly sleeved on the first rotating shaft and the second rotating shaft, a conveyor belt is sleeved on the rolling rollers, a first sprocket and a second sprocket are respectively fixedly sleeved on the first rotating shaft and the second rotating shaft, a transmission chain is sleeved on the first sprocket and the second sprocket. After the filter cake falls into the mud hopper, the mud hopper vibrates at a high frequency. During the vibration of the mud hopper, the mud materials stuck or accumulated inside are shaken off, and the mud materials will quickly fall onto the conveyor belt. Then, the conveyor belt drives the mud materials to move and pour the mud materials into the collection box. This structure shakes off the mud materials through the vibration of the mud hopper, avoiding the filter cake being stuck in the mud hopper due to its volume, which is beneficial to improving the poor smoothness of unloading.

[0007] Preferably, a guide rail is installed on the support frame. A chute is provided in the guide rail, and a wheel groove is also provided in the guide rail. A thrust plate is fixedly installed on the inner wall of the guide rail. A hydraulic cylinder is installed on the support frame, a hydraulic rod is installed on the hydraulic cylinder, a push pressure plate is installed on the hydraulic rod, and a first slider is installed on the push pressure plate. The first slider is assembled in the chute. A second slider is assembled in the chute, and a plate frame is installed on the second slider. A filter cloth is installed on the plate frame. A roller is rotatably installed on the side wall of the plate frame, and the roller is assembled in the wheel groove. A connecting plate is installed on the side wall of the plate frame, and a mounting plate is installed on the side wall of the guide rail. A moving groove is provided in the mounting plate. A stepping motor is installed on the side wall of the mounting plate through a machine base. The stepping motor is connected to the electric control cabinet through an internal circuit. A lead screw is installed on the output shaft of the stepping motor, and the lead screw is rotatably installed on the inner wall of the moving groove. A moving block is assembled in the moving groove, and a moving seat is installed on the moving block. An electric telescopic rod is installed on the moving seat through a machine base, a push rod is installed on the electric telescopic rod, a connecting block is installed on the push rod, and a material pushing plate is installed on the connecting block. The material pushing plate is slidably connected to the moving seat. By driving the material pushing plate to move through the push rod, the material pushing plate is located on one side of the connecting plate on the plate frame. Then, the material pushing plate on the moving seat moves horizontally, and the material pushing plate pushes the plate frame to move horizontally. After the plate frame moves, the filter cake between the plate frames will fall off the plate frame under the action of gravity and fall into the mud bucket, realizing the rapid unloading of the filter cake. This structure can automatically unload the plate frame, which is beneficial to improving the mud unloading efficiency.

[0008] The beneficial effects of the present utility model are as follows:

[0009] 1. After the filter cake falls into the mud bucket, the mud bucket vibrates at a high frequency. During the vibration process of the mud bucket, the mud materials stuck or piled up inside are shaken off, and the mud materials will quickly fall onto the conveyor belt. Then, the conveyor belt drives the mud materials to move and pour the mud materials into the collection box. This structure shakes off the mud materials through the vibration of the mud bucket, avoiding the filter cake being stuck in the mud bucket due to its volume, which is beneficial to improving the smoothness of unloading.

[0010] 2. By driving the material pushing plate to move through the push rod, the material pushing plate is located on one side of the connecting plate on the plate frame. Then, the material pushing plate on the moving seat moves horizontally, and the material pushing plate pushes the plate frame to move horizontally. After the plate frame moves, the filter cake between the plate frames will fall off the plate frame under the action of gravity and fall into the mud bucket, realizing the rapid unloading of the filter cake. This structure can automatically unload the plate frame, which is beneficial to improving the mud unloading efficiency. Description of the Drawings

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a three-dimensional structure schematic diagram from the first perspective;

[0013] Figure 2 It is a three-dimensional structure schematic diagram at the mud hopper;

[0014] Figure 3 It is a three-dimensional structure schematic diagram at the guide rail;

[0015] Figure 4 It is a three-dimensional structure schematic diagram at the plate frame;

[0016] Figure 5 It is a three-dimensional structure schematic diagram at the pushing plate.

[0017] In the figure: 1, support frame; 2, electric control cabinet; 3, guide plate; 4, guide groove; 5, mud hopper; 6, fixed plate; 7, pulse electromagnet; 8, lifting plate; 9, iron sheet; 10, mounting rack; 11, first rotating shaft; 12, second rotating shaft; 13, first motor; 14, roller; 15, conveyor belt; 16, first sprocket; 17, second sprocket; 18, drive chain; 19, guide rail; 20, chute; 21, wheel groove; 22, thrust plate; 23, hydraulic cylinder; 24, hydraulic rod; 25, push and press plate; 26, second slider; 27, plate frame; 28, filter cloth; 29, roller; 30, connecting plate; 31, mounting plate; 32, moving groove; 33, stepping motor; 34, lead screw; 35, moving block; 36, moving seat; 37, electric telescopic rod; 38, push rod; 39, connecting block; 40, pushing plate; 41, spring. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figure 1-2As shown in the figure, a mud discharging device for a plate and frame filter press includes a support frame 1, on which an electric control cabinet 2 is installed. A guide plate 3 is installed on the support frame 1. A guide groove 4 is formed in the guide plate 3, and a guide block is assembled in the guide groove 4. A mud hopper 5 is installed on the guide block. A fixing plate 6 is installed on the support frame 1. A pulse electromagnet 7 is installed on the bottom side of the fixing plate 6. The pulse electromagnet 7 is connected to the electric control cabinet 2 through an electric circuit. A lifting plate 8 is installed on the side wall of the mud hopper 5, and an iron sheet 9 is installed on the lifting plate 8. A plurality of springs 41 are installed between the lifting plate 8 and the fixing plate 6. An installation frame 10 is placed below the mud hopper 5. A first rotating shaft 11 and a second rotating shaft 12 are rotatably installed on the installation frame 10. A first motor 13 is installed on the side wall of the installation frame 10 through a machine base. The output shaft of the first motor 13 is connected to the first rotating shaft 11. A roller 14 is fixedly sleeved on the first rotating shaft 11 and the second rotating shaft 12. A conveyor belt 15 is sleeved on the roller 14. A first sprocket 16 and a second sprocket 17 are respectively fixedly sleeved on the first rotating shaft 11 and the second rotating shaft 12. The first sprocket 16 and the second sprocket 17 are sleeved with a transmission chain 18. During operation, in the process of discharging the mud cake by the existing mud discharging device, since the mud hopper 5 is a fixed structure, the mud cake is easily stuck in the mud hopper 5 due to its volume, resulting in poor smoothness of the device for discharging materials. After the mud cake falls into the mud hopper 5, a sinusoidal current is introduced into the pulse electromagnet 7 through a wire by the electric control cabinet 2, causing the pulse electromagnet 7 to be magnetized. The sinusoidal current will switch between positive and negative half-cycles. At the moment of each positive and negative half-cycle switch of the sinusoidal current, the current disappears. The frequency of the positive and negative half-cycle switch of the sinusoidal current is very high. Therefore, the magnetic field frequency generated by the pulse electromagnet 7 is also very high. At the moment when the pulse electromagnet 7 generates magnetic force, it attracts the iron sheet 9 to move towards the pulse electromagnet 7. The iron sheet 9 drives the lifting plate 8 to move vertically upward, and the lifting plate 8 drives the mud hopper 5 to move vertically upward. Then the magnetic force disappears. Under the thrust of the spring 41, the spring 41 pushes the lifting plate 8 to move vertically downward, and the lifting plate 8 drives the mud hopper 5 to move vertically downward. Since the switching frequency of the generation and disappearance of the magnetic field is extremely high, the mud hopper 5 generates high-frequency vibration. During the vibration of the mud hopper 5, the stuck or accumulated mud inside is shaken off, and the mud will quickly fall onto the conveyor belt 15.

[0020] Then, the first motor 13 operates to drive the first rotating shaft 11 to rotate. The first rotating shaft 11 drives the first sprocket 16 to rotate. The first sprocket 16 drives the transmission chain 18 to rotate. The transmission chain 18 drives the second sprocket 17 to rotate. The second sprocket 17 drives the second rotating shaft 12 to rotate, that is, the first rotating shaft 11 and the second rotating shaft 12 rotate synchronously. The first rotating shaft 11 and the second rotating shaft 12 drive the rollers 14 thereon to rotate synchronously. The rollers 14 drive the conveyor belt 15 to rotate. The conveyor belt 15 drives the mud to move and pour the mud into the collection box. This structure shakes off the mud through the vibration of the mud hopper 5, avoiding the mud cake being stuck in the mud hopper 5 due to its volume, which is beneficial to improving the poor smoothness of discharging materials.

[0021] Please refer to Figure 3-5 As shown, a guide rail 19 is installed on the support frame 1. A chute 20 is formed in the guide rail 19, and a wheel groove 21 is formed in the guide rail 19. A thrust plate 22 is fixedly installed on the inner wall of the guide rail 19. A hydraulic cylinder 23 is installed on the support frame 1. A hydraulic rod 24 is installed on the hydraulic cylinder 23. A push pressure plate 25 is installed on the hydraulic rod 24. A first slider is installed on the push pressure plate 25. The first slider is assembled in the chute 20. A second slider 26 is assembled in the chute 20. A plate frame 27 is installed on the second slider 26. A filter cloth 28 is installed on the plate frame 27. A roller 29 is rotatably installed on the side wall of the plate frame 27. The roller 29 is assembled in the wheel groove 21. A connecting plate 30 is installed on the side wall of the plate frame 27. An installation plate 31 is installed on the side wall of the guide rail 19. A moving groove 32 is formed in the installation plate 31. A stepping motor 33 is installed on the side wall of the installation plate 31 through a machine base. The stepping motor 33 is connected to the electric control cabinet 2 through an internal circuit. A lead screw 34 is installed on the output shaft of the stepping motor 33. The lead screw 34 is rotatably installed on the inner wall of the moving groove 32. A moving block 35 is assembled in the moving groove 32. A moving seat 36 is installed on the moving block 35. An electric telescopic rod 37 is installed on the moving seat 36 through a machine base. A push rod 38 is installed on the electric telescopic rod 37. A connecting block 39 is installed on the push rod 38. A push plate 40 is installed on the connecting block 39. The push plate 40 is slidably connected to the moving seat 36; during operation, in the process of discharging the mud cake in the plate frame 27 by the existing mud discharging device of the plate and frame filter press, since the plate frame 27 cannot discharge the material automatically, the mud discharging efficiency of the device is relatively low. By operating the hydraulic cylinder 23, the hydraulic rod 24 drives the push pressure plate 25 away from the plate frame 27. At this time, a mud cake is pressed between the plate frames 27. By operating the electric telescopic rod 37, the push rod 38 drives the push plate 40 to move, so that the push plate 40 is located on one side of the connecting plate 30 on the plate frame 27. Then, by operating the stepping motor 33, the lead screw 34 is driven to rotate. The lead screw 34 drives the moving block 35 to move horizontally. The moving block 35 drives the moving seat 36 to move horizontally. The push plate 40 on the moving seat 36 moves horizontally. The push plate 40 pushes the connecting plate 30 to move horizontally. The connecting plate 30 drives the plate frame 27 to move horizontally, so that the plate frame 27 moves towards the push pressure plate 25. Repeat the above steps to push each plate frame 27 to move towards the push pressure plate 25 in turn. After the plate frame 27 moves, the mud cake between the plate frames 27 will fall off from the plate frame 27 under the action of gravity and fall into the mud hopper 5, realizing the rapid discharging of the mud cake. This structure can make the plate frame 27 discharge the material automatically, which is beneficial to improving the mud discharging efficiency.

[0022] Working principle: During the process of discharging the filter cake in the plate-and-frame 27 by the existing sludge discharging device of the plate-and-frame filter press, since the plate-and-frame 27 cannot discharge automatically, the sludge discharging efficiency of the device is relatively low. Through the operation of the hydraulic cylinder 23, the hydraulic rod 24 drives the push plate 25 away from the plate-and-frame 27. At this time, there is a filter cake pressed between the plate-and-frame 27 and the plate-and-frame 27. Through the operation of the electric telescopic rod 37, the push rod 38 drives the pushing plate 40 to move, so that the pushing plate 40 is located on one side of the connecting plate 30 on the plate-and-frame 27. Then, through the operation of the stepping motor 33, the lead screw 34 is driven to rotate. The lead screw 34 drives the moving block 35 to move horizontally. The moving block 35 drives the moving seat 36 to move horizontally. The pushing plate 40 on the moving seat 36 moves horizontally. The pushing plate 40 pushes the connecting plate 30 to move horizontally. The connecting plate 30 drives the plate-and-frame 27 to move horizontally, so that the plate-and-frame 27 moves towards the push plate 25. Repeat the above steps to push each plate-and-frame 27 to move towards the push plate 25 in turn. After the plate-and-frame 27 moves, the filter cake between the plate-and-frames 27 will fall off from the plate-and-frame 27 under the action of gravity and fall into the mud hopper 5, realizing the rapid discharging of the filter cake. This structure can make the plate-and-frame 27 discharge automatically, which is beneficial to improving the sludge discharging efficiency; during the process of discharging the filter cake by the existing sludge discharging device, since the mud hopper 5 is a fixed structure, the filter cake is easily stuck in the mud hopper 5 due to its volume, resulting in poor smoothness of the device for discharging sludge. After the filter cake falls into the mud hopper 5, the sine current is passed through the wire into the pulse electromagnet 7 through the electric control cabinet 2, so that the pulse electromagnet 7 is magnetized. The sine current will switch between positive and negative half-cycles. Every time the sine current switches between positive and negative half-cycles, the current disappears. The switching frequency of the positive and negative half-cycles of the sine current is very high. Therefore, the magnetic field frequency generated by the pulse electromagnet 7 is also very high. The pulse electromagnet 7 generates a magnetic force to instantaneously attract the iron sheet 9 to move towards the pulse electromagnet 7. The iron sheet 9 drives the lifting plate 8 to move vertically upward. The lifting plate 8 drives the mud hopper 5 to move vertically upward. Then the magnetic force disappears. Under the thrust of the spring 41, the spring 41 pushes the lifting plate 8 to move vertically downward. The lifting plate 8 drives the mud hopper 5 to move vertically downward. Since the switching frequency of the generation and disappearance of the magnetic field is extremely high, the mud hopper 5 generates high-frequency vibration. During the vibration of the mud hopper 5, the stuck or accumulated mud in it is shaken off, and the mud will quickly fall onto the conveyor belt 15; then through the operation of the first motor 13, the first rotating shaft 11 is driven to rotate. The first rotating shaft 11 drives the first sprocket 16 to rotate. The first sprocket 16 drives the transmission chain 18 to rotate. The transmission chain 18 drives the second sprocket 17 to rotate. The second sprocket 17 drives the second rotating shaft 12 to rotate, that is, the first rotating shaft 11 and the second rotating shaft 12 rotate synchronously. The first rotating shaft 11 and the second rotating shaft 12 drive the rollers 14 on them to rotate synchronously. The rollers 14 drive the conveyor belt 15 to rotate. The conveyor belt 15 drives the mud to move and pour the mud into the collection box. This structure shakes off the mud through the vibration of the mud hopper 5, avoiding the filter cake being stuck in the mud hopper 5 due to its volume, which is beneficial to improving the smoothness of discharging sludge.

[0023] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A mud discharging device for a plate and frame filter press, characterized in that: It includes a support frame (1), on which an electric control cabinet (2) is installed. An apron plate (3) is installed on the support frame (1). A guiding groove (4) is formed in the apron plate (3). A guiding block is assembled in the guiding groove (4), and a sludge hopper (5) is installed on the guiding block. A fixing plate (6) is installed on the support frame (1). A pulse electromagnet (7) is installed on the bottom side of the fixing plate (6). The pulse electromagnet (7) is connected to the electric control cabinet (2) through a circuit. A lifting plate (8) is installed on the side wall of the sludge hopper (5), and an iron sheet (9) is installed on the lifting plate (8). A plurality of springs (41) are installed between the lifting plate (8) and the fixing plate (6). An installation frame (10) is placed below the sludge hopper (5). A first rotating shaft (11) and a second rotating shaft (12) are rotatably installed on the installation frame (10). A first motor (13) is installed on the side wall of the installation frame (10) through a machine base. The output shaft of the first motor (13) is connected to the first rotating shaft (11). Fixed sleeves of rollers (14) are sleeved on the first rotating shaft (11) and the second rotating shaft (12), and a conveyor belt (15) is sleeved on the rollers (14).

2. The sludge discharging device of a plate and frame filter press according to claim 1, characterized in that: Fixed sleeves of a first sprocket (16) and a second sprocket (17) are respectively sleeved on the first rotating shaft (11) and the second rotating shaft (12), and a transmission chain (18) is sleeved on the first sprocket (16) and the second sprocket (17).

3. The sludge discharging device of a plate and frame filter press according to claim 1, wherein: A guide rail (19) is installed on the support frame (1). A sliding groove (20) is formed in the guide rail (19), and a wheel groove (21) is formed in the guide rail (19).

4. The sludge discharging device of a plate and frame filter press according to claim 3, characterized in that: A thrust plate (22) is fixedly installed on the inner wall of the guide rail (19). A hydraulic cylinder (23) is installed on the support frame (1). A hydraulic rod (24) is installed on the hydraulic cylinder (23). A push and press plate (25) is installed on the hydraulic rod (24). A first slider is installed on the push and press plate (25), and the first slider is assembled in the sliding groove (20).

5. The sludge discharging device of a plate and frame filter press according to claim 4, characterized in that: A second slider (26) is assembled in the sliding groove (20). A plate frame (27) is installed on the second slider (26). A filter cloth (28) is installed on the plate frame (27). A roller (29) is rotatably installed on the side wall of the plate frame (27), and the roller (29) is assembled in the wheel groove (21). A connecting plate (30) is installed on the side wall of the plate frame (27).

6. The sludge discharging device of a plate and frame filter press according to claim 3, wherein: An installation plate (31) is mounted on the side wall of the guide rail (19). A moving groove (32) is formed in the installation plate (31). A stepping motor (33) is mounted on the side wall of the installation plate (31) through a machine base. The stepping motor (33) is connected to the electric control cabinet (2) through an internal circuit. A lead screw (34) is mounted on the output shaft of the stepping motor (33). The lead screw (34) is rotatably mounted on the inner wall of the moving groove (32). A moving block (35) is assembled in the moving groove (32). A moving seat (36) is mounted on the moving block (35). An electric telescopic rod (37) is mounted on the moving seat (36) through a machine base. A push rod (38) is mounted on the electric telescopic rod (37). A connecting block (39) is mounted on the push rod (38). A material pushing plate (40) is mounted on the connecting block (39). The material pushing plate (40) is slidably connected to the moving seat (36).

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