A filter press opening and closing plate mechanism

Abstract

This utility model relates to the field of filter press opening and closing plate technology, and discloses a filter press opening and closing plate mechanism, including: a filter press support, vertical plates arranged on the left and right sides of the filter press support, a guide rail arranged on the top of the central connecting plate of the support, a movable seat arranged on the right side of the filter press support, multiple sets of rollers symmetrically arranged on the front and rear sides of the movable seat, the rollers and the guide rail are embedded in each other, a fixed seat is also arranged on the front and rear sides of the movable seat, a hydraulic cylinder is arranged on the top of the vertical plates, the top of the telescopic rod of the hydraulic cylinder is connected and fixed to the fixed seat, multiple sets of fixing parts are arranged on the top of the hydraulic cylinder, a first-end valve block is fixedly arranged on the left side of the support, and the first-end valve block is connected to the hydraulic cylinder through multiple sets of pipes; by symmetrically arranging hydraulic cylinders on the left and right sides of the filter press support, and cooperating with the first-end valve block, the start-up, stop and action speed of the two sets of hydraulic cylinders are synchronously and precisely controlled, which extends the filter plate life, reduces the filter plate replacement frequency and equipment maintenance costs, and reduces downtime caused by filter plate damage.

Description

Technical Field

[0001] This utility model relates to the field of filter press opening and closing plate technology, specifically a filter press opening and closing plate mechanism. Background Technology

[0002] As a core piece of equipment in the field of solid-liquid separation, the filter press is widely used in industries such as chemical, environmental protection, mining, and food processing. It completes the solid-liquid separation operation by closing the filter plate group to form a filtration chamber and opening it to unload the material. The opening and closing plate mechanism is the key core component that determines the working efficiency, filter plate life and separation effect of the filter press.

[0003] In existing filter press technology, the opening and closing plate mechanism generally adopts a single-sided tension cylinder design: usually only one set of tension cylinders is set on one side of the filter press support. The extension rod of the cylinder is connected to the moving part that drives the filter plate to open and close through the connector. During operation, the pulling or pushing force output by the single-sided cylinder drives the moving part to drive multiple sets of filter plates along the guide rail to complete the action of approaching the closing or moving away from the opening.

[0004] However, this single-sided hydraulic cylinder drive structure has certain drawbacks: Because the force comes from only one side of the support, the center of force of the moving parts and the multiple sets of filter plates connected to them is difficult to align with the guide center of the guide rail during movement, which easily leads to off-center loading. This problem is exacerbated, especially when there are many filter plates and the overall weight of the filter plate assembly is large. Uneven compression occurs between the filter plates, and excessive local friction occurs between the filter plates and the guide rail. After long-term operation, the edges of the filter plates are prone to wear, deformation, and even cracking. This not only requires frequent shutdowns to replace the filter plates, increasing equipment maintenance costs and production downtime, but also causes the seals between the filter plates to fail due to deformation, resulting in leakage during filtration, directly reducing the solid-liquid separation efficiency and affecting the quality of the final separated product. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a filter press opening and closing plate mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A filter press opening and closing plate mechanism includes: a filter press support, vertical plates on the left and right sides of the filter press support, a guide rail on the top of the central connecting plate of the support, a movable seat on the right side of the filter press support, multiple sets of rollers symmetrically arranged on the front and rear sides of the movable seat, the rollers being embedded in the guide rail, a fixed seat on the front and rear sides of the movable seat, a hydraulic cylinder on the top of the vertical plates, the top of the telescopic rod of the hydraulic cylinder being connected and fixed to the fixed seat, multiple sets of fixing parts on the top of the hydraulic cylinder, and a first-end valve block fixedly arranged on the left side of the support, the first-end valve block being connected to the hydraulic cylinder through multiple sets of pipes; The first valve block is used to control the start and stop of the hydraulic cylinder. When the hydraulic cylinder starts, it drives the fixed seat, which in turn drives the moving seat to move left and right on the guide rail via rollers. The moving seat is connected to the filter plates of multiple filter presses via chains. The movement of the moving seat is used to drive the opening and closing of the multiple filter plates of the filter press.

[0007] Preferably, a second fixed seat is provided at the bottom of the hydraulic cylinder, and a third fixed seat is provided at the top of the hydraulic cylinder. The second fixed seat is used to fix the bottom of the hydraulic cylinder to the outer wall of the central connecting plate of the bracket by bolts, and the third fixed seat is used to fix the top of the telescopic rod of the hydraulic cylinder to the first fixed seat by bolts.

[0008] Preferably, the top of the vertical plate is provided with multiple sets of fixing parts 2, and fixing parts 1 and 2 are used to fix the pipe to the top of the vertical plate and the hydraulic cylinder.

[0009] Preferably, the side of the bracket is provided with a cable chain, which is used to pull the hydraulic lines and cables connected to the movable seat.

[0010] Compared with the prior art, the present invention provides a filter press opening and closing plate mechanism, which has the following beneficial effects: This mechanism features symmetrically arranged hydraulic cylinders on both sides of the filter press support. The two sets of hydraulic cylinders are stably connected to the movable seat via a fixed base. The starting, stopping, and operating speed of the two sets of hydraulic cylinders are precisely controlled synchronously by the valve block at the front end. During operation, the hydraulic cylinders on both sides output a consistent and synchronized force, ensuring that the movable seat receives a balanced bidirectional driving force as it moves along the guide rail. This guarantees that the force center of the movable seat and the connected filter plates is perfectly aligned with the guide rail's center, avoiding the uneven load phenomenon of existing single-sided drives.

[0011] When the filter plate assembly moves with the moving seat, the squeezing force between the filter plates is uniform and the friction between the filter plates and the guide rail is balanced, which greatly reduces the risk of wear, deformation and cracking of the filter plate edges, extends the service life of the filter plates, reduces the frequency of filter plate replacement and equipment maintenance costs, and reduces downtime caused by filter plate damage. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the hydraulic cylinder in this utility model; Figure 3 This is a schematic diagram of the planar structure of the hydraulic cylinder in this utility model; Figure 4 This is a schematic diagram of the side planar structure of this utility model; Figure 5 In this utility model Figure 1 A magnified structural diagram at point A.

[0013] The components are: 1. Bracket; 101. Vertical plate; 2. Cable chain; 3. Hydraulic cylinder; 301. Fixed seat three; 302. Fixed seat two; 303. Fixing component one; 304. Fixing component two; 4. Movable seat; 401. Fixed seat one. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Reference Figures 1-5 As shown, a filter press opening and closing plate mechanism of this embodiment includes a filter press support 1. Vertical plates 101 are integrally formed on the left and right sides of the support 1. A guide rail is fixed to the top of the central connecting plate of the support 1. The guide rail extends along the length of the support 1 to provide a guiding foundation for the moving parts. A movable seat 4 is provided on the right side of the bracket 1. Multiple sets of rollers are symmetrically arranged on the front and rear sides of the movable seat 4. The rollers are embedded in the guide rail. This engagement method can prevent the movable seat 4 from disengaging from the guide rail during movement and reduce lateral offset. Fixed seats 401 are also provided on the front and rear sides of the movable seat 4. Fixed seats 401 are provided with connecting shafts for connecting the drive components. A hydraulic cylinder 3 is mounted on the top of the vertical plate 101. A second fixing seat 302 is located at the bottom of the hydraulic cylinder 3, and the second fixing seat 302 is bolted to the outer wall of the central connecting plate of the bracket 1, ensuring stable fixation of the bottom of the hydraulic cylinder 3. A third fixing seat 301 is located at the top of the telescopic rod of the hydraulic cylinder 3, and the third fixing seat 301 is connected and fixed to a first fixing seat 401 via a connecting shaft, ensuring that the driving force of the hydraulic cylinder can be stably transmitted to the movable seat 4. Multiple sets of fixing components 303 are fixedly installed on the top of the hydraulic cylinder 3 to constrain the pipeline routing. The left side of the bracket 1 is fixed with a first end valve block 5 by bolts. The first end valve block 5 is connected to the hydraulic cylinder 3 through multiple sets of high pressure pipes. The pipes pass through the first fixing part 303 and the second fixing part 304 at the top of the vertical plate 101 in sequence. The first fixing part 303 and the second fixing part 304 cooperate to fix the pipes at the top of the vertical plate 101 and the hydraulic cylinder 3, so as to avoid the pipes shaking and wear. A drag chain 2 is installed on the side of the bracket 1 by a buckle. Hydraulic pipes and cables connected to the movable seat 4 are threaded inside the drag chain 2. The drag chain 2 moves synchronously with the movable seat 4, which can prevent the pipes and cables from getting tangled or scratched. During operation, the first valve block 5 controls the start and stop of the hydraulic cylinder 3. When the extension rod of the hydraulic cylinder 3 extends and retracts, it drives the fixed seat 401, which in turn drives the movable seat 4 to move left and right on the guide rail via rollers. Since the movable seat 4 is connected to the filter plates of multiple filter presses through chains, the movement of the movable seat 4 can synchronously drive multiple filter plates to complete the closing or opening action.

[0016] In some examples, tension adjustment bolts are provided at both ends of the chain connecting the movable seat 4 and the filter plate. The adjustment bolts are inserted through the chain connection ear plate of the movable seat 4. When the chain becomes loose after long-term use, the chain connection distance can be shortened by tightening the adjustment bolts to adjust the chain tension, avoid the filter plate opening and closing asynchronously due to chain loosening, ensure the consistency of the operation of multiple filter plates, and improve the opening and closing efficiency.

[0017] The working principle of this utility model is as follows: When the filter press needs to perform solid-liquid separation and requires multiple sets of filter plates to be closed to form a filtration chamber, the operator inputs control commands through the first-end valve block 5. The first-end valve block 5 synchronously supplies hydraulic oil to the left and right hydraulic cylinders 3 through multiple sets of pipes. The hydraulic oil pushes the telescopic rods of the hydraulic cylinders 3 to retract and close the plates. Because the left and right hydraulic cylinders 3 are precisely controlled by the first-end valve block 5, the output thrust is consistent and the telescopic speed is synchronized. The driving force is transmitted through the fixed seat 301 of the telescopic rod of the hydraulic cylinder 3 to the fixed seat 401 of the moving seat 4, causing the moving seat 4 to move along the guide rail towards the filter plate group.

[0018] During the movement of the movable seat 4, the rollers on its front and rear sides roll smoothly along the guide rail, and the drag chain 2 extends and retracts synchronously with the movable seat 4, protecting the internal hydraulic lines and cables from being pulled or tangled. At the same time, the movable seat 4 drives multiple sets of filter plates to move closer synchronously through the chain. Due to the synchronous driving force of the left and right hydraulic cylinders 3, the force center of the movable seat 4 and the filter plate group is completely coincident with the guide center of the guide rail. There is no off-center load compression between the filter plates, and each set of filter plates fits evenly, finally completing the filter plate closure and forming a sealed filtration chamber, which prepares for subsequent solid-liquid separation operations.

[0019] When the solid-liquid separation operation is completed and the filter plates need to be opened for unloading, the control system switches the control mode through the first-end valve block 5. The first-end valve block 5 adjusts the hydraulic oil flow direction, controlling the telescopic rods of the left and right hydraulic cylinders 3 to extend synchronously to open the plates for unloading. The hydraulic cylinders 3 transmit power to the movable seat 4 through the fixed seat 301 and the fixed seat 401, driving the movable seat 4 to move along the guide rail away from the filter plate assembly.

[0020] During the movement of the movable seat 4, the left and right forces remain balanced. The chain drives multiple sets of filter plates to move away synchronously and open. The filter cake between the filter plates falls off under the action of gravity, completing the unloading. During this process, the drag chain 2 continues to extend and retract with the movable seat 4. The rollers on the guide rail ensure that the movable seat 4 does not deviate, avoiding filter plate jamming or edge wear due to uneven force when the filter plates open.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter press opening and closing plate mechanism, characterized in that, include: A filter press support (1) is provided with vertical plates (101) on the left and right sides. A guide rail is provided on the top of the central connecting plate of the support (1). A movable seat (4) is provided on the right side of the filter press support (1). Multiple sets of rollers are symmetrically arranged on the front and rear sides of the movable seat (4). The rollers are embedded in the guide rail. Fixed seats (401) are also provided on the front and rear sides of the movable seat (4). A hydraulic cylinder (3) is provided on the top of the vertical plate (101). The top of the telescopic rod of the hydraulic cylinder (3) is connected and fixed to the fixed seat (401). Multiple sets of fixing parts (303) are provided on the top of the hydraulic cylinder (3). A first-end valve block (5) is fixedly arranged on the left side of the support (1). The first-end valve block (5) is connected to the hydraulic cylinder (3) through multiple sets of pipes. The first valve block (5) is used to control the start and stop of the hydraulic cylinder (3). The start of the hydraulic cylinder (3) drives the fixed seat (401), which in turn drives the moving seat (4) to move left and right on the guide rail through the rollers. The moving seat (4) is connected to the filter plates of multiple filter presses through a chain. The movement of the moving seat (4) is used to drive the opening and closing of the multiple filter plates of the filter press.

2. The filter press opening and closing plate mechanism according to claim 1, characterized in that, The bottom of the hydraulic cylinder (3) is provided with a second fixed seat (302), and the top of the hydraulic cylinder is provided with a third fixed seat (301). The second fixed seat (302) is used to fix the bottom of the hydraulic cylinder (3) to the outer wall of the central connecting plate of the bracket (1) by bolts. The third fixed seat (301) is used to fix the top of the telescopic rod of the hydraulic cylinder (3) to the first fixed seat (401) by bolts.

3. The filter press opening and closing plate mechanism according to claim 1, characterized in that, The top of the vertical plate (101) is provided with multiple sets of fixing parts 2 (304). Fixing parts 1 (303) and fixing parts 2 (304) are used to fix the pipes on the top of the vertical plate (101) and the hydraulic cylinder (3).

4. The filter press opening and closing plate mechanism according to claim 1, characterized in that, A drag chain (2) is provided on the side of the bracket (1), which is used to pull the hydraulic lines and cables connected to the movable seat (4).

Images