A device for preventing filter plate draw-off

Abstract

The utility model discloses a prevent filter plate and draw partial device, including the thrust plate body of installation on the filter frame, a plurality of filter plates and two automatic pull plate trolley, and both sides of a plurality of filter plates are fixed with handle, still include two photoelectric sensors, two photoelectric sensors are fixed on two automatic pull plate trolley respectively, wherein, every handle side wall is provided with the inductive sheet, automatic pull plate trolley runs under the drive of hydraulic motor or motor, when the automatic pull plate trolley's clamping block goes forward and holds the filter plate handle, the photoelectric sensor of installation on automatic pull plate trolley, can detect the existence of handle, in the process that filter plate is pulled back and is pressed to the side of the plate, continuously detects, ensures that the mechanical hand does not have false grasp. Guarantee pull plate and unload cake stable operation.

Description

Technical Field

[0001] This utility model relates to a device for preventing filter plates from being pulled off-center, belonging to the field of automatic control technology for filter presses. Background Technology

[0002] The automatic plate-pulling trolley operates under the drive of a hydraulic motor or electric motor, and the plate puller will automatically reciprocate regardless of whether it grabs the filter plate; The main drawback is that if the automatic plate-pulling trolley only grabs one side of the filter plate handle, the filter plate will be pulled off-center when the trolley returns, leaving the other side unhooked. This can cause the filter plate to be pulled off-center, or even prevent the plate-pulling action from being completed. In severe cases, the filter plate may fall off. Therefore, a device to prevent the filter plate from being pulled off-center is proposed. Utility Model Content

[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a device to prevent filter plate misalignment, ensuring that the automatic plate-pulling trolley can only pull the filter plate back after simultaneously pulling the left and right handles of the filter plate, thus ensuring stable operation of the plate-pulling and cake-unloading action.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a device for preventing filter plates from being pulled off-center, including a thrust plate body installed on a filter frame, multiple filter plates, and two automatic plate pulling trolleys. Handles are fixed to both sides of the multiple filter plates. The device also includes: Two photoelectric sensors are fixed on two automatic pull-plate trolleys respectively; Each handle has a sensor plate on its side wall; When the automatic plate-pulling trolley gets stuck on the handle, two photoelectric sensors synchronously detect the corresponding sensing plates. If the synchronous detection is successful, the plate-pulling action is initiated.

[0005] Preferably, a rotating groove is provided on the side wall of the automatic pull-plate trolley, and a locking block for locking the handle is rotatably connected in the rotating groove. A pull rod is fixed to the lower end of the locking block, and a return spring is fixed between the lower end of the pull rod and the side wall of the rotating groove. The rotating groove is provided with a baffle. Under the tension of the reset spring, one side of the locking block abuts against the baffle, forming a limited rotation of the locking block.

[0006] Preferably, the side of the card block closest to the baffle is chamfered.

[0007] Preferably, a fixing plate is fixed on the side wall of the automatic plate-pulling trolley, and a support frame for fixing the photoelectric sensor is provided on the fixing plate.

[0008] Preferably, the support frame is rotatably connected to the fixed plate, and the fixed plate is provided with a first through hole and a second through hole; The support frame is provided with a first bolt, and the threaded end of the first bolt is movably engaged with the first through hole and the second through hole.

[0009] Preferably, the support frame is provided with a fixing ring, and the photoelectric sensor is mounted on the fixing ring.

[0010] Preferably, a second bolt is provided on the side wall of the fixing ring, and the threaded end of the second bolt presses against the side wall of the photoelectric sensor.

[0011] Preferably, the sensor is fixedly connected to the side wall of the handle by a third bolt.

[0012] Compared with the prior art, this utility model utilizes an automatic plate-pulling trolley that operates under the drive of a hydraulic motor or electric motor. When the trolley's locking block moves forward and grabs the filter plate handle, the photoelectric sensor installed on the trolley can detect the presence of the handle. During the process of the filter plate being pulled back to the pressing plate side, continuous detection is performed to ensure that the robotic arm does not make a false grab and to ensure stable operation of the plate-pulling and unloading process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the filter plate, automatic plate pulling trolley, and handle of this utility model; Figure 4 This is a schematic diagram of the handle, photoelectric sensor, and sensing plate of this utility model; Figure 5 This is a schematic diagram of the photoelectric sensor of this utility model when it is turned to one side; Figure 6 This is an exploded view of the automatic plate-pulling trolley, photoelectric sensor, and support frame of this utility model. Figure 7 This is a cross-sectional view of the automatic pull-plate trolley, the locking block, the pull rod, and the return spring of this utility model. Figure 8 This is a schematic diagram of the biased state of this utility model.

[0014] In the picture: 1. Thrust plate body; 2. Filter plate; 3. Automatic plate pulling trolley; 301. Rotary groove; 302. Baffle; 4. Photoelectric sensor; 5. Handle; 6. Sensing plate; 7. Locking block; 701. Pull rod; 8. Return spring; 9. Fixing plate; 901. First through hole; 902. Second through hole; 10. Support frame; 1001. Fixing ring; 11. First bolt; 12. Second bolt; 13. Third bolt. Detailed Implementation

[0015] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention.

[0016] Example 1 like Figures 1-8 As shown, in this embodiment, a device for preventing filter plate misalignment is provided, including a thrust plate 1 installed on the filter frame, multiple filter plates 2, and two automatic plate pulling trolleys 3. Handles 5 are fixed on both sides of the multiple filter plates 2, and two photoelectric sensors 4 are also provided. The two photoelectric sensors 4 are respectively fixed on the two automatic plate pulling trolleys 3. Each handle 5 is provided with a sensing plate 6 on its side wall, and the sensing plate 6 is fixedly connected to the side wall of the handle 5 by a third bolt 13. When the automatic plate-pulling trolley 3 jams the handle 5, the two photoelectric sensors 4 synchronously detect the corresponding sensing plates 6. If the synchronous detection is successful, the plate-pulling action is started to maintain the stable operation of the plate-pulling unloading of the cake.

[0017] Example 2 Based on Embodiment 1, in this embodiment, a rotating groove 301 is provided on the side wall of the automatic pull plate trolley 3. A locking block 7 for locking the handle 5 is rotatably connected in the rotating groove 301. A pull rod 701 is fixed at the lower end of the locking block 7. A return spring 8 is fixed between the lower end of the pull rod 701 and the side wall of the rotating groove 301. The rotating groove 301 is provided with a baffle 302. Under the pulling force of the return spring 8, one side of the locking block 7 abuts against the baffle 302, forming a one-way rotation of the locking block 7.

[0018] The side of the card block 7 closest to the baffle 302 has a chamfer.

[0019] When the automatic plate unloading starts, the automatic plate pulling trolley 3 moves towards the thrust plate body 1 under the drive of the hydraulic motor or electric motor. When the locking block 7 on the automatic plate pulling trolley 3 reaches the handle 5 of the filter plate 2, the locking block 7 is turned into the rotating groove 301 by the handle 5. When the locking block 7 passes the handle 5, the return spring 8 resets the locking block 7. At this time, when the automatic plate pulling trolley 3 returns to the starting position, the locking block 7 is locked on one side of the handle 5. The automatic plate pulling trolley 3 will take the filter plate 2 back to the oil cylinder side of the filter press.

[0020] Example 3 Based on the above embodiments, in this embodiment, a fixing plate 9 is fixed on the side wall of the automatic plate pulling trolley 3, and a support frame 10 for fixing the photoelectric sensor 4 is provided on the fixing plate 9.

[0021] The support frame 10 is rotatably connected to the fixed plate 9, and the fixed plate 9 is provided with a first through hole 901 and a second through hole 902. The support frame 10 is provided with a first bolt 11, and the threaded end of the first bolt 11 is movably engaged with the first through hole 901 and the second through hole 902.

[0022] A fixing ring 1001 is provided on the support frame 10, and the photoelectric sensor 4 is installed on the fixing ring 1001.

[0023] A second bolt 12 is provided on the side wall of the fixing ring 1001. The threaded end of the second bolt 12 presses against the side wall of the photoelectric sensor 4 to fix the photoelectric sensor 4 on the fixing ring 1001.

[0024] Rotate the support frame 10 so that the threaded end of the first bolt 11 is aligned with the first through hole 901. Then screw the first bolt 11 into the first through hole 901. At this time, the photoelectric sensor 4 is in working state. In this state, the plate pulling operation is performed as follows: When the filter press cake unloading starts, the automatic plate-pulling trolley 3, driven by a hydraulic motor or electric motor, moves towards the thrust plate body 1. When the locking block 7 on the automatic plate-pulling trolley 3 locks the handle 5 of the filter plate 2, the photoelectric sensor 4 detects the sensing plate 6 on the handle 5. If both photoelectric sensors 4 on both sides have stable signals, the automatic plate-pulling trolley 3 will carry the filter plate 2 back to the oil cylinder side of the filter press. During the movement, the PLC continuously receives stable signals from the photoelectric sensors 4 on both sides. The automatic plate-pulling trolley 3 will move until it touches the filter plate 2 on the oil cylinder side of the filter press. Then, the automatic plate-pulling trolley 3 will automatically reverse to pull the next filter plate 2, repeating this process until the last filter plate 2 is pulled. If one or both photoelectric sensors 4 on one side do not detect the sensing plate 6 on the handle 5, the equipment will pause or alarm to ensure stable plate pulling. If misalignment occurs during the above operation, unscrew the first bolt 11 from the first through hole 901, rotate the support frame 10 to align the first bolt 11 with the second through hole 902, and screw the first bolt 11 into the second through hole 902. At this time, the photoelectric sensor 4 rotates to one side. In this state, manually adjust and correct the filter plate 2. Since the photoelectric sensor 4 is biased to one side, it can avoid accidentally triggering the automatic operation function of the automatic plate pulling trolley 3, thus improving safety.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model without departing from the spirit and scope of this utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for preventing filter plate misalignment, comprising a thrust plate (1) mounted on a filter frame, a plurality of filter plates (2), and two automatic plate-pulling trolleys (3), wherein handles (5) are fixed on both sides of the plurality of filter plates (2), characterized in that, Also includes: Two photoelectric sensors (4) are fixed on two automatic pull-plate trolleys (3) respectively; Each handle (5) has a sensor plate (6) on its side wall. When the automatic plate-pulling trolley (3) jams the handle (5), the two photoelectric sensors (4) synchronously detect the corresponding sensing sheet (6). If the synchronous detection is successful, the plate-pulling action is started.

2. The device for preventing filter plate misalignment according to claim 1, characterized in that, The automatic pull plate trolley (3) has a rotating groove (301) on its side wall. A locking block (7) for locking the handle (5) is rotatably connected in the rotating groove (301). A pull rod (701) is fixed at the lower end of the locking block (7). A return spring (8) is fixed between the lower end of the pull rod (701) and the side wall of the rotating groove (301). The rotating groove (301) is provided with a baffle (302). Under the pulling force of the reset spring (8), one side of the locking block (7) abuts against the baffle (302), forming a limiting rotation of the locking block (7).

3. The device for preventing filter plate misalignment according to claim 2, characterized in that, The card block (7) has a chamfer on the side near the baffle (302).

4. The device for preventing filter plate misalignment according to claim 1, characterized in that, A fixing plate (9) is fixed on the side wall of the automatic plate pulling trolley (3), and a support frame (10) for fixing the photoelectric sensor (4) is provided on the fixing plate (9).

5. The device for preventing filter plate misalignment according to claim 4, characterized in that, The support frame (10) is rotatably connected to the fixed plate (9), and the fixed plate (9) is provided with a first through hole (901) and a second through hole (902). The support frame (10) is provided with a first bolt (11), and the threaded end of the first bolt (11) is movably engaged with the first through hole (901) and the second through hole (902).

6. The device for preventing filter plate misalignment according to claim 4, characterized in that, A fixing ring (1001) is provided on the support frame (10), and the photoelectric sensor (4) is installed on the fixing ring (1001).

7. The device for preventing filter plate misalignment according to claim 6, characterized in that, A second bolt (12) is provided on the side wall of the fixing ring (1001), and the threaded end of the second bolt (12) presses against the side wall of the photoelectric sensor (4).

8. The device for preventing filter plate misalignment according to claim 1, characterized in that, The sensor (6) is fixedly connected to the side wall of the handle (5) by the third bolt (13).

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