Linkage for filter press

Abstract

This utility model relates to the field of filter press technology, specifically a linkage device for a filter press, including an automatic circulating water tank, an automatic liquid receiving tray, and an automatic conveying mechanism. Both the automatic circulating water tank and the automatic conveying mechanism are fixedly installed outside the filter press. The automatic circulating water tank is located below the filter press and is fixedly connected to and communicates with the filter press. The automatic liquid receiving tray is movably installed outside the filter press, located below the filter press and above the automatic conveying mechanism. This linkage device for a filter press allows the automatic circulating water tank to automatically introduce circulating water into the filter press, and the circulating water can also automatically flow back into the automatic circulating water tank. The automatic liquid receiving tray can automatically move; when all the filtered water has fallen into the tray, it moves away to the lower side of the filter press, allowing the filter cake to fall onto the automatic conveying mechanism, which automatically conveys the filter cake. This achieves full automation of the filter press operation.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, and specifically to a linkage device for a filter press. Background Technology

[0002] In the hydrometallurgical zinc smelting process, slag filtration is crucial, as the moisture content of the leaching slag directly determines the efficiency of subsequent processing and resource recovery. To allow the diaphragm filter plates to expand and compress the slag for dewatering, operators must manually open pipeline valves to allow water to flow into the diaphragm filter plates. This process is time-consuming, labor-intensive, and cumbersome. Furthermore, the lack of a synchronization mechanism between the filter press and the conveyor belt means that to unload the slag, operators must first manually remove the receiving tray and then go to the second floor to start the conveyor belt. This process not only wastes manpower but also results in poor production continuity and extremely low automation, severely hindering the efficient production of hydrometallurgical zinc. Therefore, a filter press is urgently needed to solve these problems. Utility Model Content

[0003] To address the technical issues of needing operators to manually open pipeline valves to allow water to flow into the diaphragm filter plates for dewatering, and needing to manually remove the receiving tray before proceeding to the second floor to activate the conveyor belt for unloading, this invention provides a linkage device for filter presses. An automatic circulating water tank automatically guides circulating water into the filter press, and the circulating water can also automatically return to the automatic circulating water tank. The automatic receiving tray can automatically relocate; once all the filtered water has fallen into the tray, it moves away to the side and below the filter press, allowing the filter cake to fall onto the automatic conveying mechanism, which then automatically transports the filter cake. This linkage device assists the filter press, achieving full automation of the filter press operation, improving production efficiency, and reducing the risk of manual intervention.

[0004] This utility model provides a linkage device for a filter press, including an automatic circulating water tank, an automatic liquid receiving tray, and an automatic conveying mechanism. The automatic circulating water tank and the automatic conveying mechanism are both fixedly installed outside the filter press. The automatic circulating water tank is located below the side of the filter press and is fixedly connected to and communicates with the filter press. The automatic liquid receiving tray is movably installed outside the filter press, located below the filter press and above the automatic conveying mechanism.

[0005] Furthermore, an infrared level gauge is fixedly installed inside the automatic circulating water tank, and an inlet pipe and an outlet pipe are fixedly installed outside the automatic circulating water tank. A pressure gauge, a circulating water pump, and an inlet electric valve are fixedly installed on the inlet pipe, and an outlet electric valve is fixedly installed on the outlet pipe. One end of each of the inlet and outlet pipes is fixedly connected to and communicates with a main pipe. Multiple branch pipes are fixedly installed on the main pipe, and each of the multiple branch pipes is fixedly connected to and communicates with a filter press.

[0006] Furthermore, a liquid receiving frame is fixedly installed outside the filter press. The liquid receiving frame is located below the filter press and above the automatic conveying mechanism. A rack, a first infrared sensor, and two tracks are fixedly installed on the liquid receiving frame. A slider is slidably installed on each track. The automatic liquid receiving tray is fixedly installed on the sliders of the two tracks. A first motor is fixedly installed on the automatic liquid receiving tray. The output shaft of the first motor is fixedly connected to a moving gear and drives it to rotate. The moving gear meshes with the rack. The first infrared sensor is located below the filter press and to the side of the automatic liquid receiving tray.

[0007] Furthermore, the automatic conveying mechanism includes a conveyor frame and a conveyor belt rotatably mounted on the conveyor frame. The liquid receiving frame is located above the conveyor belt, and a second infrared sensor is fixedly mounted on the conveyor frame. The second infrared sensor is located above and to the side of the conveyor belt.

[0008] Furthermore, two drive rollers are rotatably mounted on the conveyor frame, the conveyor belt is disposed between the two drive rollers, and a second motor is fixedly mounted on the conveyor frame. The output shaft of the second motor is fixedly connected to one of the drive rollers and drives it to rotate.

[0009] Furthermore, it also includes a feed pump, which is fixedly installed outside the filter press. The feed pump is fixedly connected to and communicates with the filter press through a feed pipe, and a feed electric valve is fixedly installed on the feed pipe.

[0010] Furthermore, it also includes a PLC controller, which is fixedly installed outside the filter press. The PLC controller is electrically connected to the filter press, infrared level gauge, pressure gauge, circulating water pump, inlet electric valve, outlet electric valve, first infrared sensor, first motor, second infrared sensor, feed pump, and feed electric valve.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The filter press linkage device of this utility model automatically introduces circulating water into the filter press through an automatic circulating water tank, and the circulating water can also automatically flow back into the automatic circulating water tank; the automatic liquid receiving tray can automatically move, and when all the filtered water falls into the automatic liquid receiving tray, the automatic liquid receiving tray moves away to the side and below the filter press, and the subsequent filter cake can fall onto the automatic conveying mechanism, which can automatically transport the filter cake; the linkage device assists the filter press to realize the automation of the entire filter press operation, thereby improving the production efficiency of the filter press and reducing the risk of manual intervention. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a linkage device for a filter press according to the present invention; Figure 2 This is a side view of the automatic liquid receiving tray of this utility model. Figure 3 This is a side view of the rack structure of this utility model; The numbers in the attached diagram are: 1. Automatic circulating water tank; 11. Infrared level gauge; 12. Inlet pipe; 121. Pressure gauge; 122. Circulating water pump; 123. Inlet electric valve; 13. Outlet pipe; 131. Outlet electric valve; 14. Main pipe; 15. Branch pipe; 2. Automatic receiving tray; 21. First motor; 211. Moving gear; 3. Automatic conveying mechanism; 31. Conveyor frame; 32. Conveyor belt; 33. Second infrared sensor; 34. Drive roller; 35. Second motor; 4. Filter press; 5. Receiving frame; 51. Track; 511. Slider; 52. Rack; 53. First infrared sensor; 6. Feed pump; 61. Feed pipe; 611. Feed electric valve; 7. PLC controller. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] like Figures 1-3 As shown, a linkage device for a filter press includes an automatic circulating water tank 1, an automatic liquid receiving tray 2, and an automatic conveying mechanism 3. Both the automatic circulating water tank 1 and the automatic conveying mechanism 3 are fixedly installed outside the filter press 4. The automatic circulating water tank 1 is located below the filter press 4 and is fixedly connected to and communicates with the filter press 4. The automatic liquid receiving tray 2 is movably installed outside the filter press 4, located below the filter press 4 and above the automatic conveying mechanism 3. In this embodiment, the filter press 4 and the automatic liquid receiving tray 2 are installed on the second-floor working floor of the factory building, while the automatic circulating water tank 1 and the automatic conveying mechanism 3 are installed on the first-floor working floor of the factory building.

[0015] Filter press 4 is a 1250-type programmable diaphragm filter press. The structure and operation of filter press 4 are existing technologies and will not be described in detail here.

[0016] The following is a brief explanation of the filtration operation of the filter press 4. Generally, the slurry enters the filter press 4 (the pressing plate of the filter press 4 presses all the diaphragm filter plates together, and the slurry enters the chamber of the filter press 4, where two diaphragm filter plates are close together, forming a chamber). The automatic circulating water tank 1 introduces circulating water into the filter press 4 (the circulating water enters the diaphragm filter plates, causing the diaphragm filter plates of the filter press 4 to expand, thus compressing the slurry in the chamber of the filter press 4). The filter press 4 filters out the water from the slurry, and then the circulating water automatically flows back to the automatic circulating water tank 1. Finally, the filter press 4 discharges the filtered water and filter cake one after the other. In fact, the filtered water is discharged through the flow channel formed by the two diaphragm filter plates that are close together. After being discharged, the filtered water falls into the automatic liquid receiving tray 2. The pressing plate of the filter press 4 is released, and the automatic plate pulling operation of the filter press 4 is performed. After the automatic plate pulling separates all the diaphragm filter plates, the filter cake in the chamber is discharged and falls onto the automatic conveying mechanism 3.

[0017] Previously, in order to expand and compress the slag in the filter press 4 to achieve dewatering, the operator needed to manually open the pipeline valve to allow water to flow into the diaphragm filter plate. In this embodiment, the automatic circulating water tank 1 automatically introduces circulating water into the filter press 4, and the circulating water can also automatically flow back into the automatic circulating water tank 1.

[0018] Previously, operators needed to manually remove the receiving tray before going to the first floor to start the conveyor belt. In this embodiment, the automatic receiving tray 2 can automatically move. When all the filtered water falls into the automatic receiving tray 2, the automatic receiving tray 2 moves away to the side and below the filter press 4, and the filter cake can then fall onto the automatic conveying mechanism 3, which can automatically convey the filter cake.

[0019] In this embodiment, the linkage device automatically circulates water into the filter press 4 via the automatic circulating water tank 1, and the circulating water can also automatically flow back into the automatic circulating water tank 1. The automatic liquid receiving tray 2 can automatically move. When all the filtered water falls into the automatic liquid receiving tray 2, the automatic liquid receiving tray 2 moves away to the side and below the filter press 4, and the subsequent filter cake can fall onto the automatic conveying mechanism 3, which can automatically convey the filter cake. The linkage device assists the filter press 4 to realize the automation of the entire filter pressing operation, thereby improving the production efficiency of the filter press 4 and reducing the risk of manual intervention.

[0020] In one possible implementation, an infrared level gauge 11 is fixedly installed inside the automatic circulating water tank 1. An inlet pipe 12 and an outlet pipe 13 are fixedly installed outside the automatic circulating water tank 1. A pressure gauge 121, a circulating water pump 122, and an inlet electric valve 123 are fixedly installed on the inlet pipe 12. An outlet electric valve 131 is fixedly installed on the outlet pipe 13. One end of each of the inlet pipe 12 and the outlet pipe 13 is fixedly connected to and communicates with a main pipe 14. Multiple branch pipes 15 are fixedly installed on the main pipe 14, and each of the branch pipes 15 is fixedly connected to and communicates with a filter press 4 (actually, with the water inlets on multiple diaphragm filter plates). A cap is fixedly and sealed at the other end of the main pipe 14.

[0021] Infrared level gauge 11 is used to detect whether the level of circulating water in the automatic circulating water tank 1 has reached the preset minimum start threshold, and feeds the signal back to PLC controller 7. Pressure gauge 121 is used to detect the internal pressure of the water inlet pipe 12.

[0022] The circulating water pump 122 starts, the inlet electric valve 123 opens, and the outlet electric valve 131 closes. The circulating water in the automatic circulating water tank 1 enters the diaphragm filter plate of the filter press 4, and the diaphragm filter plate begins its pressing operation. When the pressure gauge 121 reaches 0.6 MPa, the inlet electric valve 123 closes, the circulating water pump 122 stops running, the diaphragm plate stops pressing, the outlet electric valve 131 opens, and the circulating water in the diaphragm filter plate automatically flows back to the automatic circulating water tank 1.

[0023] When the pressure gauge 121 drops to 0 MPa, the outlet electric valve 131 closes, and the filter press 4 discharges the filtered water and filter cake. First, the diaphragm filter plates drain water for 5 minutes (the preset time is 5 minutes). The discharged filtered water falls into the automatic liquid receiving tray 2 (the automatic liquid receiving tray 2 performs a 5-minute water receiving operation). The automatic liquid receiving tray 2 moves away to the side and below the filter press 4, and the filter press 4 begins to unload the cake (the automatic plate pulling operation of the filter press 4 separates all the diaphragm filter plates, and the filter cake in the chamber is discharged). After discharge, the filter cake falls onto the automatic conveying mechanism 3.

[0024] In one possible implementation, a liquid receiving frame 5 is fixedly installed on the outside of the filter press 4. The liquid receiving frame 5 is located below the filter press 4 and above the automatic conveying mechanism 3. A rack 52, a first infrared sensor 53, and two tracks 51 are fixedly installed on the liquid receiving frame 5. A slider 511 is slidably installed on each track 51. Preferably, there are two sliders 511. The automatic liquid receiving tray 2 is fixedly installed on the sliders 511 of the two tracks 51. A first motor 21 is fixedly installed on the automatic liquid receiving tray 2. The output shaft of the first motor 21 is fixedly connected to a moving gear 211 and drives it to rotate. The moving gear 211 meshes with the rack 52. The first infrared sensor 53 is located below the filter press 4 and to the side of the automatic liquid receiving tray 2. The first motor 21 starts, driving the moving gear 211 to rotate. Because the moving gear 211 meshes with the rack 52, it moves along the rack 52. At this time, the slider 511 moves on the track 51, eventually driving the automatic liquid receiving tray 2 to move. Initially, the automatic liquid receiving tray 2 is located below the filter press 4. When all the filtered water falls into the automatic liquid receiving tray 2, it moves away to the side and below the filter press 4.

[0025] The first infrared sensor 53 is used to detect the position of the automatic liquid receiving tray 2. When the first infrared sensor 53 detects the automatic liquid receiving tray 2, the automatic liquid receiving tray 2 is located below the filter press 4. When the first infrared sensor 53 does not detect the automatic liquid receiving tray 2, the automatic liquid receiving tray 2 moves away to the side and below the filter press 4, and the automatic conveying mechanism 3 then starts to operate.

[0026] In one possible implementation, the automatic conveying mechanism 3 includes a conveyor frame 31 and a conveyor belt 32 rotatably mounted on the conveyor frame 31. The liquid receiving frame 5 is located above the conveyor belt 32. A second infrared sensor 33 is fixedly mounted on the conveyor frame 31, located to the side and above the conveyor belt 32. After discharge, the filter residue falls onto the conveyor belt 32, which rotates, moving the filter residue to the next workstation.

[0027] The second infrared sensor 33 is used to detect whether there is filter residue on the conveyor belt 32. When the second infrared sensor 33 detects filter residue on the conveyor belt 32, the conveyor belt 32 rotates. When the second infrared sensor 33 detects no filter residue on the conveyor belt 32, the conveyor belt 32 stops running.

[0028] In one possible implementation, two drive rollers 34 are rotatably mounted on the conveyor frame 31. Four bearing seats are provided on the conveyor frame 31, and the two ends of each drive roller 34 are rotatably connected to bearings in the two bearing seats to achieve rotation. A conveyor belt 32 is positioned between the two drive rollers 34. A second motor 35 is fixedly mounted on the conveyor frame 31, and the output shaft of the second motor 35 is fixedly connected to one drive roller 34, driving it to rotate. When the second motor 35 starts, it drives one drive roller 34 to rotate, thereby causing the other drive roller 34 and the conveyor belt 32 to rotate.

[0029] As one possible implementation, a feed pump 6 is also included. The feed pump 6 is fixedly installed outside the filter press 4 and is fixedly connected to and communicates with the filter press 4 through a feed pipe 61. A feed electric valve 611 is fixedly installed on the feed pipe 61. When the feed pump 6 starts, the feed electric valve 611 opens, and the external slurry is drawn into the filter press 4. After the feed pump 6 stops feeding, the feed electric valve 611 closes. Preferably, the external storage tank stores slurry, and the feed pump 6 is also connected to the external storage tank through a first pipe.

[0030] As one possible implementation, a PLC controller 7 is also included. The PLC controller 7 is fixedly installed outside the filter press 4. The PLC controller 7 is electrically connected to the filter press 4, infrared level gauge 11, pressure gauge 121, circulating water pump 122, inlet electric valve 123, outlet electric valve 131, first infrared sensor 53, first motor 21, second infrared sensor 33, second motor 35, feed pump 6, and feed electric valve 611. The operator controls the linkage of various mechanisms by operating the PLC controller 7. The PLC controller 7 collects signals from each device in real time. When the pressure in the inlet pipe 12 is zero, the level of circulating water in the automatic circulating water tank 1 reaches the preset minimum start threshold, the automatic liquid receiving tray 2 is below the filter press 4, and the conveyor belt 32 is stationary, the PLC controller 7 enters standby mode.

[0031] After the feed pump 6 stops feeding, the feed electric valve 611 closes. The circulating water pump 122 starts, the inlet electric valve 123 opens, and the outlet electric valve 131 closes. The circulating water in the automatic circulating water tank 1 enters the diaphragm filter plate of the filter press 4, and the diaphragm filter plate begins the pressing operation. When the pressure gauge 121 reaches 0.6 MPa, the inlet electric valve 123 closes, the circulating water pump 122 stops running, the diaphragm plate stops pressing, the outlet electric valve 131 opens, and the circulating water in the diaphragm filter plate automatically flows back into the automatic circulating water tank 1.

[0032] When the pressure gauge 121 drops to 0 MPa, the outlet electric valve 131 closes, and the filter press 4 discharges the filtered water and filter residue. First, the diaphragm filter plate drains water for 5 minutes, and then the discharged filtered water falls into the automatic liquid receiving tray 2. The automatic liquid receiving tray 2 moves away to the side and below the filter press 4. At this time, the first infrared sensor 53 does not detect the automatic liquid receiving tray 2.

[0033] The filter press 4 begins to unload the filter residue (the automatic plate pulling operation of the filter press 4 separates all the diaphragm filter plates, and the filter residue in the chamber is discharged). After discharge, the filter residue falls onto the conveyor belt 32. The second infrared sensor 33 detects the filter residue on the conveyor belt 32, and the conveyor belt 32 rotates, driving the filter residue to the next station.

[0034] When the second infrared sensor 33 detects that there is no filter residue on the conveyor belt 32, the PLC controller 7 sequentially issues commands to stop the conveyor belt 32 from running, and the automatic liquid receiving tray 2 returns to the bottom of the filter press 4. The PLC controller 7 then returns to standby mode, waiting for the next liquid level signal to trigger the cycle.

[0035] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A linkage device for a filter press, characterized in that, The filter press includes an automatic circulating water tank (1), an automatic liquid receiving tray (2), and an automatic conveying mechanism (3). The automatic circulating water tank (1) and the automatic conveying mechanism (3) are both fixedly installed outside the filter press (4). The automatic circulating water tank (1) is located below the side of the filter press (4). The automatic circulating water tank (1) is fixedly connected to and communicates with the filter press (4). The automatic liquid receiving tray (2) is movably installed outside the filter press (4). The automatic liquid receiving tray (2) is located below the filter press (4) and above the automatic conveying mechanism (3).

2. The linkage device for a filter press according to claim 1, characterized in that, An infrared level gauge (11) is fixedly installed inside the automatic circulating water tank (1). An inlet pipe (12) and an outlet pipe (13) are fixedly installed outside the automatic circulating water tank (1). A pressure gauge (121), a circulating water pump (122), and an inlet electric valve (123) are fixedly installed on the inlet pipe (12). An outlet electric valve (131) is fixedly installed on the outlet pipe (13). One end of the inlet pipe (12) and the outlet pipe (13) are fixedly connected to and communicate with the main pipe (14). Multiple branch pipes (15) are fixedly installed on the main pipe (14). The multiple branch pipes (15) are fixedly connected to and communicate with the filter press (4).

3. The linkage device for a filter press according to claim 2, characterized in that, The filter press (4) is fixedly provided with a liquid receiving frame (5). The liquid receiving frame (5) is located below the filter press (4) and above the automatic conveying mechanism (3). The liquid receiving frame (5) is fixedly provided with a rack (52), a first infrared sensor (53) and two tracks (51). Each track (51) is slidably provided with a slider (511). The automatic liquid receiving tray (2) is fixedly provided on the sliders (511) of the two tracks (51). The automatic liquid receiving tray (2) is fixedly provided with a first motor (21). The output shaft of the first motor (21) is fixedly connected to the moving gear (211) and drives it to rotate. The moving gear (211) meshes with the rack (52). The first infrared sensor (53) is located below the filter press (4) and to the side of the automatic liquid receiving tray (2).

4. The linkage device for a filter press according to claim 3, characterized in that, The automatic conveying mechanism (3) includes a conveyor frame (31) and a conveyor belt (32) rotatably mounted on the conveyor frame (31). The liquid receiving frame (5) is located above the conveyor belt (32). A second infrared sensor (33) is fixedly mounted on the conveyor frame (31). The second infrared sensor (33) is located above and to the side of the conveyor belt (32).

5. The linkage device for a filter press according to claim 4, characterized in that, Two drive rollers (34) are rotatably mounted on the conveyor frame (31), and the conveyor belt (32) is disposed between the two drive rollers (34). A second motor (35) is fixedly mounted on the conveyor frame (31), and the output shaft of the second motor (35) is fixedly connected to a drive roller (34) and drives it to rotate.

6. The linkage device for a filter press according to claim 4, characterized in that, It also includes a feed pump (6), which is fixedly installed outside the filter press (4). The feed pump (6) is fixedly connected to the filter press (4) through a feed pipe (61) and communicates with it. A feed electric valve (611) is fixedly installed on the feed pipe (61).

7. The linkage device for a filter press according to claim 6, characterized in that, It also includes a PLC controller, which is fixedly installed outside the filter press (4). The PLC controller is electrically connected to the filter press (4), infrared level gauge (11), pressure gauge (121), circulating water pump (122), inlet electric valve (123), outlet electric valve (131), first infrared sensor (53), first motor (21), second infrared sensor (33), feed pump (6), and feed electric valve (611).

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