A filter plate replacement device suitable for disc filters

Abstract

A filter plate replacement device for a disc filter includes a bottom fixing mechanism, a lifting drive mechanism, and an operating mechanism. The bottom fixing mechanism includes a bent tile-shaped steel plate and a short steel pipe, the short steel pipe being vertically positioned above the bent tile-shaped steel plate. The lifting drive mechanism includes a sleeve, a lead screw, a nut, and a fixing claw. The lead screw has a steel ball at its bottom, which is embedded in the short steel pipe. The nut is fixed to one end of the sleeve and cooperates with the lead screw, the lead screw passing through the sleeve. The fixing claw is located at the end of the sleeve away from the nut. The operating mechanism includes a handle located at the top of the lead screw. This invention converts rotational force into lifting force through a mechanical structure, eliminating the need for brute force and significantly reducing the labor intensity of workers. It avoids violent operations such as knocking and prying, reducing the probability of filter plate damage. It also eliminates the need for workers to stand above the disc filter for dangerous operations, avoiding safety risks.

Description

Technical Field

[0001] This utility model belongs to the field of disc filter maintenance technology, and mainly relates to a filter plate replacement device suitable for disc filters. Background Technology

[0002] Existing disc filters utilize the vacuum pump's suction principle to adsorb minerals from slurry. When the filter element is immersed in the slurry, the vacuum pump draws in the minerals, causing them to be adsorbed and dewatered. When the main shaft rotates to the groove above the belt conveyor, the vacuum pump blows air, deforming the filter cloth on the filter element and causing the dewatered mineral particles to clump and fall off. Since the filter cloth has a limited lifespan and needs to be replaced periodically, there are no suitable disassembly tools available on the market for replacing disc filter elements. Disassembly is typically done by brute force or pry bars, requiring 2-3 people to operate each time.

[0003] In addition, the filter plate is fixed to the vacuum tube by a simple pin. Under the suction of the vacuum pump, mineral particles will be sucked into the connection between the filter plate and the vacuum tube, causing rust to form. This makes replacement time-consuming and laborious and easily damages the filter fan. Utility Model Content

[0004] To overcome the shortcomings of existing filter replacement technologies, such as high labor intensity, large labor requirements, and easy damage to filter fans, this utility model provides a filter plate replacement device suitable for disc filters that is quick and easy to operate and can reduce the labor intensity of workers.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A filter plate replacement device suitable for a disc filter, comprising:

[0007] The bottom fixing mechanism includes a curved tile-shaped steel plate and a short steel pipe, wherein the short steel pipe is vertically arranged above the curved tile-shaped steel plate;

[0008] The lifting drive mechanism includes a sleeve, a lead screw, a nut, and a fixing claw. The lead screw has a steel ball at its bottom, which is embedded in the short steel tube. The nut is fixed to one end of the sleeve and cooperates with the lead screw. The lead screw passes through the sleeve. The fixing claw is located at the end of the sleeve away from the nut.

[0009] The operating mechanism includes a handle, which is disposed on the top of the lead screw.

[0010] The curvature of the bent, tile-shaped steel plate is adapted to the curvature of the outer wall of the main spindle vacuum tube.

[0011] The number of fixed claws is at least two, and they are symmetrically distributed on both sides of the lead screw.

[0012] The handle is a strip-shaped structure and is set perpendicular to the lead screw.

[0013] A chain is provided between the sleeve and the short steel pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) Reduce labor intensity: By converting rotational force into lifting force through mechanical structure, the use of brute force is eliminated, significantly reducing the labor intensity of workers.

[0016] 2) Reduced labor costs: Only two people are needed to operate it, which reduces the labor requirements compared to the traditional 2-3 people required to operate it.

[0017] 3) Protect the filter plates: Avoid violent operations such as knocking and prying, reducing the chance of damage to the filter plates.

[0018] 4) Improved safety: No workers are required to stand above the disc filter to perform dangerous operations, thus avoiding safety risks.

[0019] 5) Ensure transmission efficiency: The design of grease lubrication and prevention of particle ingress ensures stable and reliable transmission of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 for Figure 1 Left view of section I.

[0022] In the diagram: 1-bent tile-shaped steel plate, 2-short steel pipe, 3-steel ball, 4-sleeve, 5-lead screw, 6-nut, 7-fixing claw, 8-handle, 9-chain, 10-connector, 11-clamping space. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] like Figure 1 As shown, a filter plate replacement device suitable for a disc filter includes a bottom fixing mechanism, a lifting drive mechanism, and an operating mechanism.

[0025] The bottom fixing mechanism includes a bent tile-shaped steel plate 1 and a short steel pipe 2. The short steel pipe 2 is vertically arranged above the bent tile-shaped steel plate 1. The curvature of the bent tile-shaped steel plate 1 is adapted to the curvature of the outer wall of the main shaft vacuum tube, so that it can fit tightly against the outer wall of the main shaft vacuum tube, and transmit the overall weight of the device and the force generated during operation to the main body of the equipment, providing a stable support foundation for the entire device and ensuring that the device will not shake or shift during operation.

[0026] The lifting drive mechanism includes a sleeve 4, a lead screw 5, a nut 6, and a fixing claw 7. The lead screw 5 has a steel ball 3 at its bottom, which is embedded in a short steel pipe 2. The nut 6 is fixed to one end of the sleeve 4 and cooperates with the lead screw 5. The lead screw 5 passes through the sleeve 4. The fixing claw 7 is located at the end of the sleeve 4 away from the nut.

[0027] The short steel pipe 2 is filled with grease as a lubricant. The grease can reduce the frictional resistance of the steel ball 3 when it rotates inside the short steel pipe 2, ensuring that the steel ball 3 rotates smoothly; on the other hand, it can form a seal to prevent mineral particles from entering the interior of the short steel pipe 2, thus avoiding affecting the transmission efficiency of the steel ball 3.

[0028] The sleeve 4 is a hollow tubular structure made of high-strength steel, which has good rigidity and load-bearing capacity. The sleeve 4 is sleeved on the outside of the lead screw 5, with one end fixedly connected to the nut 6 and the other end provided with a fixing claw 7. It is a key component connecting the nut 6 and the fixing claw 7, and can move up and down under the drive of the nut 6, thereby driving the fixing claw 7 to move synchronously.

[0029] The lead screw 5 is made of high-strength threaded steel and is welded and fixed to the bottom of the steel ball 3, allowing the lead screw 5 to rotate around the steel ball 3 as a fulcrum. The nut 6 is fixed to one end of the sleeve 4 and cooperates with the lead screw 5 to form a helical drive structure. Figure 2 As shown, there are two fixing claws 7, which are symmetrically arranged on the side wall of the end of the sleeve 4 through the connector 10. The inner side of the claws is provided with anti-slip texture. The clamping space 11 between the fixing claws 7 is used to accommodate the plate cake at the lower end of the fan-shaped plate and can be tightly locked on the edge of the filter fan. This not only prevents slippage during the lifting process and ensures that the lifting force can be stably applied to the filter plate, but also ensures that the sleeve 4 will not rotate during the lifting process.

[0030] The operating mechanism is a strip handle 8, which is vertically set on the top of the lead screw 5. The surface of the handle 8 is covered with a rubber anti-slip sleeve, which not only makes it easy for workers to grip and apply force, but also prevents the hands from slipping during operation, thus improving the safety and convenience of operation.

[0031] A chain 9 is provided between the sleeve 4 and the short steel pipe 2. For this split structure, the chain 9 is conducive to the preservation of both and is not easy to lose.

[0032] The various structures and components in this application exhibit strong synergy, as detailed below:

[0033] 1) The bent, tile-shaped steel plate 1, through its tight fit with the outer wall of the main shaft vacuum tube, provides a stable mounting base for supporting the transmission mechanism. The short steel pipe 2, vertically welded to the bent, tile-shaped steel plate 1, not only provides space for the steel ball 3 but also transfers the supporting force of the bent, tile-shaped steel plate 1 to the steel ball 3. The steel ball 3 is embedded in the short steel pipe 2 and welded to the bottom of the lead screw 5, allowing the bottom of the lead screw 5 to rotate flexibly within the short steel pipe 2 via the steel ball 3 during rotation. Simultaneously, the grease lubrication within the short steel pipe 2 reduces friction during rotation, ensuring smooth rotation of the lead screw 5 and providing a good start for the transmission of the entire device.

[0034] 2) The flexible rotation of the steel ball 3 within the short steel pipe 2 provides support for the rotation of the lead screw 5. Simultaneously, when the lead screw 5 is subjected to axial force, the steel ball 3 can evenly distribute the force to the short steel pipe 2 and the bent tile-shaped steel plate 1, preventing damage to the bottom of the lead screw 5 due to concentrated force. The lead screw 5 and the nut 6 form a helical transmission pair. When the lead screw 5 rotates under the drive of the handle 8, since the lead screw 5 itself does not move up and down, the nut 6 moves up and down along the axial direction of the lead screw 5 under the action of the thread. Because the nut 6 is fixed to the sleeve 4, the movement of the nut 6 will cause the sleeve 4 to move up and down together, and the fixing claw 7 at the end of the sleeve 4 will also move up and down synchronously. The fixing claw 7 engages with the edge of the filter fan opening. When the sleeve 4 drives the fixing claw 7 to move upward, the fixing claw 7 applies an upward lifting force to the filter plate, thereby achieving the disassembly of the filter plate.

[0035] 3) The sleeve 4 is fitted outside the lead screw 5. On the one hand, the sleeve 4 connects the nut 6 and the fixing claw 7 into a whole, so that the up and down movement of the nut 6 can be directly transmitted to the fixing claw 7, ensuring the synchronicity and stability of the movement of the fixing claw 7. On the other hand, the sleeve 4 protects the lead screw 5, preventing external mineral particles and other impurities from contacting the lead screw 5 and avoiding impurities from entering the mating surface between the lead screw 5 and the nut 6, which would affect the efficiency and service life of the screw drive.

[0036] 4) Handle 8 is located at the top of lead screw 5. The worker rotates handle 8 to rotate lead screw 5. The strip-shaped design of handle 8 increases the lever arm. According to the lever principle, a small force applied by the worker to handle 8 can generate a large rotational torque on lead screw 5, thus driving lead screw 5 to rotate with less effort. The rotational motion of lead screw 5 is converted into the up-and-down movement of nut 6, sleeve 4, and fixing claw 7 through helical transmission with nut 6. This efficiently converts the rotational force applied by the worker to handle 8 into the lifting force required to disassemble the filter plate, achieving effective force transmission and conversion, and greatly improving the efficiency and convenience of filter plate disassembly.

[0037] In use, first add grease to the short steel pipe 2, then clamp the curved tile-shaped steel plate 1 at the bottom of the device onto the vacuum tube wall, so that the fixing claw 7 is embedded in the root of the filter fan and locked onto the edge of the filter fan opening. Then, one person holds the lower part of the device to keep it stable, while another person rotates the handle 8 at the top, which drives the lead screw 5 to rotate. With the cooperation of the lead screw 5 and the nut 6, the lead screw 5 rises and drives the filter plate to rise through the fixing claw 7. Once the filter plate is loose, it can be easily removed.

[0038] The parts not detailed above are existing technologies and therefore have not been described in detail.

Claims

1. A filter plate changing device for a disc filter, characterized in that: include The bottom fixing mechanism includes a curved tile-shaped steel plate and a short steel pipe, wherein the short steel pipe is vertically arranged above the curved tile-shaped steel plate; The lifting drive mechanism includes a sleeve, a lead screw, a nut, and a fixing claw. The lead screw has a steel ball at its bottom, which is embedded in the short steel tube. The nut is fixed to one end of the sleeve and cooperates with the lead screw. The lead screw passes through the sleeve. The fixing claw is located at the end of the sleeve away from the nut. The operating mechanism includes a handle, which is disposed on the top of the lead screw.

2. The filter plate replacement device for a disc filter according to claim 1, characterized in that: The curvature of the bent, tile-shaped steel plate is adapted to the curvature of the outer wall of the main spindle vacuum tube.

3. The filter plate replacement device for a disc filter according to claim 1, characterized in that: The number of fixed claws is at least two, and they are symmetrically distributed on both sides of the lead screw.

4. A filter plate replacement device suitable for a disc filter according to claim 1, characterized in that: The handle is a strip-shaped structure and is set perpendicular to the lead screw.

5. A filter plate replacement device suitable for a disc filter according to claim 1, characterized in that: A chain is provided between the sleeve and the short steel pipe.

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