Abnormal loosening alarm device for oil cylinder of filter press

By installing an abnormal loosening monitoring mechanism on the filter press cylinder and using a sensor to trigger an alarm, the problems of liquid leakage and filter plates flying out caused by loosening of the clamping plate are solved, thus improving the safety and reliability of the equipment.

CN224126648UActive Publication Date: 2026-04-17SUZHOU DAWU FILTRATION PRESS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU DAWU FILTRATION PRESS CO LTD
Filing Date
2025-05-08
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

The existing filter press cylinders cannot detect and alarm abnormal loosening of the clamping plate, which leads to risks of liquid leakage, slurry spraying and filter plates flying out.

Method used

Design an abnormal release monitoring mechanism that triggers an alarm when the clamping plate is released, using a first sensor and a second sensor. The alarm includes a loudspeaker and an alarm light to alert staff.

Benefits of technology

It enables real-time monitoring of the clamping plate, providing timely alarms to prevent leakage, slurry spraying, and filter plate flying out, thus improving equipment safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224126648U_ABST
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Abstract

The utility model discloses an abnormal loosening alarm device for an oil cylinder of a filter press, which belongs to the technical field of filter pressing separation equipment and comprises a girder, an oil cylinder body is fixedly mounted on one side of the girder, a pressing plate connected with the oil cylinder body is arranged on the girder, and an abnormal loosening monitoring mechanism is arranged on the pressing plate. The abnormal loosening monitoring mechanism comprises a first fixing block fixedly installed on the top of the girder, and a first sensor is arranged on one side of the first fixing block. Through the arrangement of the abnormal loosening monitoring mechanism, the pressing plate on the oil cylinder body can be monitored in real time, and in the feeding or squeezing process, when the pressing plate is loosened, the first inductor and the second inductor in the abnormal loosening monitoring mechanism induce and trigger the alarm to give an alarm, so that the pressing plate is prevented from being loosened. Therefore, a worker is reminded in time to carry out emergency treatment, and the situations of liquid leakage, guniting and filter plate flying-out caused by abnormal loosening are avoided.
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Description

Technical Field

[0001] This utility model relates to a filter press cylinder, and more particularly to an abnormal release alarm device for a filter press cylinder, belonging to the technical field of filter press separation equipment. Background Technology

[0002] The function of a filter press is to achieve solid-liquid separation. It mainly consists of a main beam, filter plates, pressing plates, thrust plates, and hydraulic cylinders. The surface of the filter plates is covered with filter cloth. During the process of the material passing through the filter cloth, the entrained solid substances are separated to form a filter cake. The working process of the filter press includes pressing, pressure holding, feeding, pressing, loosening, and unloading.

[0003] The existing filter press cylinders do not have monitoring functions and cannot provide timely alarms when the clamping plate is abnormally loosened. If the clamping plate loosens and retracts during feeding or pressing, and there is no timely reminder and emergency handling, not only will there be leakage and slurry spraying, but in severe cases, there is also the risk that the filter plate will fly out of the equipment. Utility Model Content

[0004] The main purpose of this utility model is to solve the above-mentioned problems and provide an alarm device for abnormal loosening of the oil cylinder of a filter press.

[0005] The purpose of this utility model can be achieved by adopting the following technical solution: by setting up an abnormal loosening monitoring mechanism, the clamping plate on the cylinder body can be monitored in real time. During the feeding or pressing process, when the clamping plate becomes loose, the first and second sensors in the abnormal loosening monitoring mechanism will sense and trigger the alarm to sound an alarm, thereby promptly reminding the staff to take emergency measures and avoid leakage, slurry spraying, and filter plate flying out due to abnormal loosening.

[0006] An abnormal release alarm device for a filter press cylinder includes a main beam. A cylinder body is fixedly installed on one side of the main beam. A clamping plate connected to the cylinder body is provided on the main beam. An abnormal release monitoring mechanism is provided on the clamping plate. The abnormal release monitoring mechanism includes a first fixing block fixedly installed on the top of the main beam. A first sensor is provided on one side of the first fixing block. A support rod penetrating the first fixing block is fixedly installed on the top of the clamping plate. A second fixing block is fixedly installed at one end of the support rod. A second sensor is provided on one side of the second fixing block. An alarm is fixedly installed on the surface of the main beam.

[0007] Preferably, the alarm includes multiple loudspeakers, and an alarm light is fixedly installed between two of the loudspeakers.

[0008] Preferably, two rollers are symmetrically installed inside the first fixing block, and grooves are provided at the top and bottom of the support rod.

[0009] Preferably, a plurality of first springs are fixedly installed on the top of both the first fixing block and the second fixing block, a first fixing plate is fixedly installed on the top of the two first springs, a locking rod is fixedly installed on the bottom of the first fixing plate, and a locking block is fixedly installed on both the first sensor and the second sensor.

[0010] Preferably, a second fixing plate is fixedly installed on the surface of both the first fixing block and the second fixing block, a telescopic rod is fixedly installed on one side of the second fixing plate, a first limiting frame is fixedly installed at the output end of the telescopic rod, and a second limiting frame is fixedly installed on the top of the first fixing plate.

[0011] Preferably, a first protective frame is fixedly installed on one side of both the first fixing block and the second fixing block, a second spring is fixedly installed on the first protective frame, a slider that is slidably connected to the first protective frame is fixedly installed on one end of the second spring, and a second protective frame that is fixedly connected to the slider is sleeved on the outside of the first protective frame.

[0012] Preferably, a rubber pad is fixedly installed on one side of the second protective frame, and two baffles located above the second spring are symmetrically installed on the top of the first protective frame.

[0013] The beneficial technical effects of this utility model are as follows: According to the present utility model, an abnormal loosening alarm device for a filter press cylinder can monitor the pressing plate on the cylinder body in real time through the setting of the abnormal loosening monitoring mechanism. During the feeding or pressing process, when the pressing plate becomes loose, the first and second sensors in the abnormal loosening monitoring mechanism will sense and trigger the alarm, thereby promptly reminding the staff to take emergency measures and avoid leakage, slurry spraying, and filter plate flying out due to abnormal loosening. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;

[0015] Figure 2 This is a side view of the overall structure according to a preferred embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of a roller structure according to a preferred embodiment of the present invention;

[0017] Figure 4 This is a unfolded view of the locking rod and locking block structure according to a preferred embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the first limiting frame and the second limiting frame according to a preferred embodiment of the present utility model;

[0019] Figure 6 This is a schematic diagram of the second spring and slider structure according to a preferred embodiment of the present invention.

[0020] In the diagram: 1. Main beam; 2. Cylinder body; 3. Pressing plate; 4. Abnormal release monitoring mechanism; 5. First fixing block; 6. First sensor; 7. Support rod; 8. Second fixing block; 9. Second sensor; 10. Alarm; 11. Loudspeaker; 12. Alarm light; 13. Roller; 14. Groove; 15. First spring; 16. First fixing plate; 17. Locking rod; 18. Locking block; 19. Second fixing plate; 20. Telescopic rod; 21. First limiting frame; 22. Second limiting frame; 23. First protective frame; 24. Second spring; 25. Slider; 26. Second protective frame; 27. Rubber pad; 28. Baffle. Detailed Implementation

[0021] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0022] like Figures 1-6 As shown, this embodiment provides an abnormal release alarm device for a filter press cylinder, including a main beam 1, a cylinder body 2 fixedly installed on one side of the main beam 1, a clamping plate 3 connected to the cylinder body 2 on the main beam 1, an abnormal release monitoring mechanism 4 on the clamping plate 3, the abnormal release monitoring mechanism 4 including a first fixing block 5 fixedly installed on the top of the main beam 1, a first sensor 6 on one side of the first fixing block 5, a support rod 7 fixedly installed on the top of the clamping plate 3 penetrating the first fixing block 5, a second fixing block 8 fixedly installed at one end of the support rod 7, a second sensor 9 on one side of the second fixing block 8, and an alarm 10 fixedly installed on the surface of the main beam 1. By setting up the abnormal loosening monitoring mechanism 4, the pressing plate 3 on the cylinder body 2 can be monitored in real time. During the feeding or pressing process, after the cylinder body 2 drives the pressing plate 3 to extend, the pressing plate 3 drives the second fixing block 8 to move through the support rod 7, so that the second sensor 9 on one side of the second fixing block 8 is in contact with the first sensor 6 on the one side of the first fixing block 5. When the pressing plate 3 is loosened, the second sensor 9 will separate from the first sensor 6, thereby triggering the alarm 10 to sound an alarm, so as to promptly remind the staff to take emergency measures and avoid abnormal loosening that could lead to leakage, slurry spraying, or filter plate flying out.

[0023] In this embodiment, as Figures 1-6 As shown, the alarm 10 includes multiple loudspeakers 11, an alarm light 12 is fixedly installed between two loudspeakers 11, two rollers 13 are symmetrically installed inside the first fixing block 5, grooves 14 are provided at the top and bottom of the support rod 7, multiple first springs 15 are fixedly installed at the top of the first fixing block 5 and the second fixing block 8, a first fixing plate 16 is fixedly installed at the top of the two first springs 15, a locking rod 17 is fixedly installed at the bottom of the first fixing plate 16, and locking blocks 18 are fixedly installed on the first sensor 6 and the second sensor 9. The loudspeaker 11 and alarm light 12 provide both audible and visual alarms, allowing staff to quickly identify the location of any abnormality and initiate timely emergency procedures. The roller 13 and groove 14, with the support rod 7 passing through the first fixed block 5, allow the roller 13 to roll within the groove 14 as the support rod 7 moves. This rolling action between the roller 13 and the groove 14 reduces friction between the support rod 7 and the first fixed block 5, thereby lowering... To eliminate friction noise between metals, the first sensor 6 and the second sensor 9 are mounted on the first fixed block 5 and the second fixed block 8 by means of the first spring 15, the first fixed plate 16, the locking rod 17 and the locking block 18. Since the locking rod 17 is supported by the first spring 15 and the first fixed plate 16, the locking rod 17 has the function of pulling upward. After the locking rod 17 is pulled upward, it can be disengaged from the locking block 18, and then the first sensor 6 and the second sensor 9 can be disassembled for easy replacement in case of failure.

[0024] In this embodiment, as Figures 1-6As shown, a second fixing plate 19 is fixedly installed on the surface of both the first fixing block 5 and the second fixing block 8. A telescopic rod 20 is fixedly installed on one side of the second fixing plate 19. A first limiting frame 21 is fixedly installed at the output end of the telescopic rod 20. A second limiting frame 22 is fixedly installed on the top of the first fixing plate 16. A first protective frame 23 is fixedly installed on one side of both the first fixing block 5 and the second fixing block 8. A second spring 24 is fixedly installed on the first protective frame 23. A slider 25 that is slidably connected to the first protective frame 23 is fixedly installed at one end of the second spring 24. A second protective frame 26 that is fixedly connected to the slider 25 is sleeved on the outside of the first protective frame 23. A rubber pad 27 is fixedly installed on one side of the second protective frame 26. Two baffles 28 located above the second spring 24 are symmetrically installed on the top of the first protective frame 23. By using the second fixing plate 19, telescopic rod 20, first limiting frame 21, and second limiting frame 22, after the locking rod 17 is pulled up and detached from the locking block 18, the telescopic rod 20 is then pulled to extend its output end, causing the first limiting frame 21 to move. This allows the first limiting frame 21 to be riveted to the second limiting frame 22, thus limiting the locking rod 17 and preventing it from descending during disassembly and assembly. The first protective frame 23, second spring 24, slider 25, and second protective frame 26, which cover the outside of the first sensor 6 and the second sensor 9, provide protection, preventing them from being impacted by external forces. Damage occurs, and the second protective frame 26 is slidably mounted on the first protective frame 23 via the slider 25. When the second sensor 9 approaches and fits against the first sensor 6, the two second protective frames 26 will squeeze each other and contract, thus exposing the first sensor 6 and the second sensor 9 for fitting. After the first sensor 6 and the second sensor 9 separate, the second protective frame 26 will be reset by the action of the second spring 24. The rubber pad 27 and the baffle 28 are provided. The rubber pad 27 can reduce the collision force when the two second protective frames 26 come into contact, reducing vibration, while the baffle 28 can block the second spring 24, preventing the second spring 24 from bending upward and leaking out after contraction.

[0025] In this embodiment, as Figures 1-6 As shown in the figure, the working process of the abnormal release alarm device for the oil cylinder of the filter press provided in this embodiment is as follows:

[0026] During the feeding or pressing process, after the cylinder body 2 drives the pressing plate 3 to extend, the pressing plate 3 drives the second fixed block 8 to move through the support rod 7, so that the second sensor 9 on one side of the second fixed block 8 is in contact with the first sensor 6 on the one side of the first fixed block 5. When the pressing plate 3 is loosened, the second sensor 9 will separate from the first sensor 6, thereby triggering the loudspeaker 11 and alarm light 12 in the alarm device 10 to provide sound and light alarms, so as to promptly remind the staff to take emergency measures.

[0027] In summary, in this embodiment, the abnormal release alarm device for the oil cylinder of a filter press, through the setting of the loudspeaker 11 and the alarm light 12, provides both audible and visual alarms, enabling operators to promptly identify the location of the abnormality and take timely emergency measures. Through the setting of the roller 13 and the groove 14, since the support rod 7 passes through the first fixed block 5, the roller 13 can roll within the groove 14 when the support rod 7 moves. The rolling action between the roller 13 and the groove 14 reduces the friction between the support rod 7 and the first fixed block 5, thereby... This design reduces frictional noise between metal parts. Through the arrangement of the first spring 15, the first fixing plate 16, the locking rod 17, and the locking block 18, both the first sensor 6 and the second sensor 9 are mounted on the first fixing block 5 and the second fixing block 8 by the engagement of the locking rod 17 and the locking block 18. Since the locking rod 17 is supported by the first spring 15 and the first fixing plate 16, it has an upward pulling function. Pulling the locking rod 17 upward allows it to disengage from the locking block 18, enabling the disassembly of the first sensor 6 and the second sensor 9 for easy replacement in case of malfunction. The second fixing plate 19, the telescopic rod 20, the first limiting frame 21, and the second limiting frame 22 further enhance this functionality. The setup involves pulling the lever 17 up to detach it from the locking block 18, then pulling the telescopic rod 20 to extend its output end, causing the first limiting frame 21 to move. This allows the first limiting frame 21 to be riveted to the second limiting frame 22, thus limiting the lever 17 and preventing it from descending during assembly and disassembly. The first protective frame 23, the second spring 24, the slider 25, and the second protective frame 26, covering the outside of the first sensor 6 and the second sensor 9, provide protection against external impacts and prevent damage. The second protective frame 26 further... The slider 25 is slidably mounted on the first protective frame 23. When the second sensor 9 approaches and fits against the first sensor 6, the two second protective frames 26 will squeeze each other and contract, thereby exposing the first sensor 6 and the second sensor 9 for fitting. After the first sensor 6 and the second sensor 9 separate, the second protective frame 26 will be reset by the action of the second spring 24. The rubber pad 27 and the baffle 28 are provided. The rubber pad 27 can reduce the collision force when the two second protective frames 26 come into contact, reducing vibration. The baffle 28 can block the second spring 24, preventing the second spring 24 from bending upward and leaking out after contraction.

[0028] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. An abnormal loosening alarm device for a filter press oil cylinder, comprising a beam (1), an oil cylinder body (2) is fixedly installed on one side of the beam (1), a pressing plate (3) connected with the oil cylinder body (2) is arranged on the beam (1), characterized in that, An abnormal release monitoring mechanism (4) is provided on the clamping plate (3). The abnormal release monitoring mechanism (4) includes a first fixing block (5) fixedly installed on the top of the beam (1). A first sensor (6) is provided on one side of the first fixing block (5). A support rod (7) penetrating the first fixing block (5) is fixedly installed on the top of the clamping plate (3). A second fixing block (8) is fixedly installed at one end of the support rod (7). A second sensor (9) is provided on one side of the second fixing block (8). An alarm (10) is fixedly installed on the surface of the beam (1).

2. The abnormal release alarm device for filter press oil cylinder according to claim 1, characterized in that, The alarm (10) includes multiple loudspeakers (11), and an alarm light (12) is fixedly installed between two of the loudspeakers (11).

3. The non-normal release alarm device for filter press oil cylinder according to claim 1, characterized in that, The first fixing block (5) has two rollers (13) symmetrically installed inside, and the top and bottom of the support rod (7) are provided with grooves (14).

4. The abnormal release alarm device for the oil cylinder of a filter press according to claim 1, characterized in that, Multiple first springs (15) are fixedly installed on the top of the first fixing block (5) and the second fixing block (8). A first fixing plate (16) is fixedly installed on the top of the two first springs (15). A locking rod (17) is fixedly installed on the bottom of the first fixing plate (16). A locking block (18) is fixedly installed on the first sensor (6) and the second sensor (9).

5. The non-normal release alarm device for filter press oil cylinder according to claim 4, characterized in that, A second fixing plate (19) is fixedly installed on the surface of both the first fixing block (5) and the second fixing block (8). A telescopic rod (20) is fixedly installed on one side of the second fixing plate (19). A first limiting frame (21) is fixedly installed at the output end of the telescopic rod (20). A second limiting frame (22) is fixedly installed on the top of the first fixing plate (16).

6. The non-normal release alarm device for filter press oil cylinder according to claim 1, characterized in that, A first protective frame (23) is fixedly installed on one side of both the first fixed block (5) and the second fixed block (8). A second spring (24) is fixedly installed on the first protective frame (23). A slider (25) that is slidably connected to the first protective frame (23) is fixedly installed on one end of the second spring (24). A second protective frame (26) that is fixedly connected to the slider (25) is sleeved on the outside of the first protective frame (23).

7. The abnormal release alarm device for the oil cylinder of a filter press according to claim 6, characterized in that, A rubber pad (27) is fixedly installed on one side of the second protective frame (26), and two baffles (28) are symmetrically installed on the top of the first protective frame (23) above the second spring (24).