Filter cloth replacing device

Abstract

The utility model provides a filter cloth replacing device which comprises a truss, the bottom of the truss is provided with a straight-edge guide rail and an arc-edge guide rail, the straight-edge guide rail and the arc-edge guide rail are both connected with a pneumatic rolling assembly, and a rolling wheel of the pneumatic rolling assembly is connected with a straight-edge guide groove or an arc-edge guide groove. The arc-edge guide groove is located below the arc-edge guide rail, the straight-edge guide groove is located below the straight-edge guide rail, and the straight-edge guide groove and the arc-edge guide groove are connected with the truss through guide groove fixing pieces. In the whole process, close combination of manual work and semi-automatic equipment is achieved, seamless connection of manual laying and equipment operation is achieved, the labor intensity of manual work is remarkably reduced, the replacement efficiency is improved, and the safety and accuracy of operation are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of wet-process phosphoric acid production automation, and relates to a semi-automatic device for replacing the filter cloth of a rotary disk filter. Background Technique

[0002] The production of wet-process phosphoric acid is a key process in the phosphorus chemical industry. Its core processes include acid ore reaction, filtration and washing of phosphogypsum, and concentration of dilute acid. Among these processes, the filtration process is particularly crucial because it directly affects the yield of phosphoric acid products and the smooth progress of subsequent processes. The filtration of wet-process phosphoric acid usually uses a rotary disk filter for solid-liquid separation. The filter cloth of the filter, as the filtration medium, is responsible for blocking solid impurities and ensuring the smooth flow of filtrate. However, during the production process of phosphoric acid, the filter cloth of the filter gradually loses its effectiveness after 10 - 15 days of use and needs to be replaced regularly.

[0003] Currently, the replacement of filter cloth in wet-process phosphoric acid production still completely relies on manual operation. Specifically, operators need to manually remove the old filter cloth, clean the grooves of the filter disk, lay the new filter cloth, and fix it with a pressure strip. This series of operation steps is cumbersome and time-consuming. Usually, it takes 10 operators to work continuously for 6 hours to complete the replacement of the filter cloth of a set of filters.

[0004] This manual operation method has the following obvious problems:

[0005] High labor intensity: During the process of replacing the filter cloth, operators need to maintain high-intensity physical labor for a long time. Especially when working in a high-temperature and corrosive environment, it is extremely easy to cause fatigue and increase the physical burden.

[0006] Long time: The process of manually replacing the filter cloth is long and inefficient, resulting in an increase in the downtime of the filter, directly affecting the production efficiency of wet-process phosphoric acid and the economic benefits of the factory.

[0007] Safety hazards: Since the filter cloth replacement work is mostly carried out in a harsh environment of high temperature and high acidity, manual operation is prone to accidental injuries, such as chemical burns and mechanical injuries. At the same time, the risk of safety accidents also increases due to operators working in fatigue.

[0008] High personnel demand: The traditional method of replacing filter cloth requires a large amount of human resources. Usually, 10 operators are required to work together for one replacement. This not only increases the labor cost of the enterprise but also increases the complexity of communication and coordination due to the cooperation of multiple people.

[0009] Therefore, the existing technologies have significant deficiencies in aspects such as the labor intensity of filter cloth replacement, time efficiency, safety, and labor costs. With the increasing requirements of modern industry for production efficiency and safety, there is an urgent need for a filter cloth replacement system that can reduce labor intensity, improve replacement efficiency, and ensure operation safety to solve these problems. This is precisely the core technical problem to be solved by the present utility model. Summary of the Utility Model

[0010] The present utility model aims to provide a semi-automatic device for replacing filter cloth, so as to reduce the manual operation intensity, shorten the replacement time, improve production efficiency, and enhance safety.

[0011] The technical solution of the present utility model is as follows:

[0012] A filter cloth replacement device, comprising a truss. A straight-edge guide rail and an arc-edge guide rail are provided at the bottom of the truss. The straight-edge guide rail and the arc-edge guide rail are both connected to a pneumatic rolling component, and the rolling wheel of the pneumatic rolling component is connected to the straight-edge guide groove or the arc-edge guide groove.

[0013] The arc-edge guide groove is located below the arc-edge guide rail, and the straight-edge guide groove is located below the straight-edge guide rail. The straight-edge guide groove and the arc-edge guide groove are connected to the truss through guide groove fixing parts.

[0014] The truss is connected to a hydraulic lifting column.

[0015] An alignment fine-tuning component is provided at the position where the truss is connected to the hydraulic lifting column.

[0016] There is 1 straight-edge guide rail, and 2 pneumatic rolling components are provided; there is 1 straight-edge guide groove.

[0017] There are 2 arc-edge guide rails, and 1 pneumatic rolling component is provided for each; there are 2 arc-edge guide grooves.

[0018] The pneumatic rolling component includes a pneumatic device and a rolling wheel.

[0019] The hydraulic lifting column is made of high-strength steel.

[0020] The straight-edge guide groove and the arc-edge guide groove are made of wear-resistant materials.

[0021] The straight-edge guide rail and the arc-edge guide rail are made of aluminum alloy or steel.

[0022] The guide groove fixing part includes clamp one and clamp two; both the upper parts of clamp one and clamp two are fixed to the truss by bolts, and the lower parts are both connected to the straight-edge guide groove or the arc-edge guide groove. The straight-edge guide groove or the arc-edge guide groove is clamped and fixed by clamp one and clamp two; the guide groove fixing part is detachable.

[0023] Introduction to the main components of the present utility model:

[0024] Hydraulic lifting columns: These components are installed on both sides of the filter press and are used to support the entire filter cloth replacement device and can adjust the height of the filter cloth. A hydraulic cylinder is installed inside. Through the hydraulic system, the lifting columns can flexibly lift and lower the filter cloth to ensure that the filter cloth can be smoothly covered on the working surface of the filter press. The height adjustment function of this component enables the filter cloth to be laid in the optimal position, reducing the workload of manual adjustment.

[0025] Straight-edge guide rails and arc-edge guide rails: The guide rails provide an accurate movement track for the pneumatic rolling component. The guide rails are made of high-precision aluminum alloy or steel, with excellent straightness and rigidity, ensuring that the pneumatic rolling component can move smoothly and accurately along the guide rails, thereby realizing the precise positioning and pressing of the filter cloth. The design of the guide rails fully considers the shape and size of the filter press, ensuring the flatness of each part of the filter cloth.

[0026] Pneumatic rolling component: The core execution component of this device can perform linear movement along the guide rails and is mainly responsible for pressing the filter cloth into the grooves of the filter disc. This component uses the pressure generated by the pneumatic device and uses the rolling wheel to evenly press the rubber strip into the preset grooves in the filter disc to fix the filter cloth. This semi-automatic operation greatly reduces the time and labor intensity of manual cloth pressing. The pneumatic device adopts an efficient cylinder structure, and by controlling the air pressure, the pressure of the rolling component can be precisely adjusted to enable the filter cloth to be firmly embedded in the grooves of the filter disc. The walking speed and pressure of the rolling component can be adjusted to meet the needs of different filter cloth materials and specifications.

[0027] Straight-edge guide grooves and arc-shaped guide grooves: These two guide grooves are respectively used for guiding the placement of the filter cloth and the rubber strip. The straight-edge guide groove is used to guide the laying of the filter cloth in the straight part, while the arc-shaped guide groove ensures the accurate positioning of the filter cloth at the arc part of the filter press. The design of the guide grooves fully considers the tension and bending requirements of the filter cloth at different positions, ensuring the smoothness and accuracy of the filter cloth during laying. These guide groove structures are precision machined and have high dimensional accuracy, capable of adapting to filter cloths of different shapes and sizes.

[0028] Guide groove fixings: These fixings are used to stabilize the straight-edge guide grooves and arc-shaped guide grooves, enabling the guide grooves to remain stable during filter cloth replacement. These fixings ensure that the guide grooves do not shift during operation, thus guaranteeing the accuracy of filter cloth laying. The guide groove fixings adopt a combination of bolts and clamps, which can ensure the stability of the guide grooves while facilitating the installation and disassembly of the guide grooves. The design of the fixings considers the gap between the guide grooves and the filter disc. Through a fine-tuning mechanism, the precise adjustment of the guide groove position can be achieved to ensure that the guide grooves do not move during the filter cloth laying process.

[0029] Alignment Fine-tuning Component: During the laying process of the filter cloth, the alignment fine-tuning component is used to achieve the precise alignment of the filter cloth. Driven by a mechanical fine-tuning screw or a servo motor, this component can finely adjust the position of the filter cloth edge, ensuring that every point on the filter cloth can accurately cover the filter disc and avoiding the phenomena of filter cloth offset or wrinkles. The operation of the fine-tuning component is simple and can be remotely controlled through a remote control handle, avoiding errors caused by manual operation.

[0030] Control System: The control system includes an electric control cabinet and a remote control handle, which is the command center of the entire device. The electric control cabinet is equipped with a programmable logic controller and related electrical components to receive and execute the instructions from the remote control handle and control the operation of each component. The remote control handle is held by the operator and remotely controls components such as the hydraulic lifting column, the walking pneumatic rolling component, and the alignment fine-tuning component through wireless communication or wired connection. The control system has a human-machine interface (HMI), and the operator can monitor the operation status of the device through the touch screen, and perform parameter settings and fault diagnosis.

[0031] Therefore, the utility model has the following beneficial effects:

[0032] During the entire process of filter cloth replacement of this device, it is controlled by the remote control handle and the electric control cabinet. The operator issues instructions through the remote control handle to control the operation of the rolling component, the hydraulic lifting column, and the alignment fine-tuning component, and at the same time monitors the entire operation process through the electric control cabinet. This control system simplifies the operation steps and reduces the possibility of human errors.

[0033] This device solves the problems in the prior art such as high labor intensity, low efficiency, and poor safety of manual operation. It can achieve efficient and safe filter cloth replacement with less manpower. The entire process realizes the close combination of manual labor and semi-automatic equipment, and the seamless connection between manual laying and equipment operation, significantly reducing the manual labor intensity, improving the replacement efficiency, and greatly enhancing the safety and accuracy of the operation. This design greatly reduces the necessity of manual intervention and improves the efficiency and safety of filter cloth replacement in the wet-process phosphoric acid production process. Description of the Drawings

[0034] Figure 1 Schematic diagram of the structure of this device.

[0035] Figure 2 Schematic diagram of the bottom guide rail of the truss of this device.

[0036] Figure 3 Working schematic diagram of this device.

[0037] Figure 4 For Figure 1 Enlarged view of area A.

[0038] Description of the markings in the figure: 1. Truss, 2. Straight-edge guide groove, 3. Arc-edge guide groove, 4. Pneumatic rolling component, 5. Guide groove fixing part, 6. Alignment fine-tuning component, 7. Hydraulic lifting column, 8. Filter disc, 11. Straight-edge guide rail, 12. Arc-edge guide rail, 41. Rolling wheel, 51. Fixture 1, 52. Fixture 2, 81. Filter disc groove. Specific implementation mode

[0039] The following will describe the implementation scheme of the present utility model in detail in combination with embodiments. The following embodiments are only used to illustrate the present utility model and should not be regarded as limiting the scope of the present utility model.

[0040] Embodiment 1

[0041] As shown in the figure, a filter cloth replacement device includes a truss 1. The bottom of the truss 1 is provided with a straight-edge guide rail 11 and an arc-edge guide rail 12. Both the straight-edge guide rail 11 and the arc-edge guide rail 12 are connected to a pneumatic rolling component 4, and the rolling wheel 41 of the pneumatic rolling component 4 is connected to the straight-edge guide groove 2 or the arc-edge guide groove 3.

[0042] The arc-edge guide groove 3 is located below the arc-edge guide rail 12, and the straight-edge guide groove 2 is located below the straight-edge guide rail 11. The straight-edge guide groove 2 and the arc-edge guide groove 3 are connected to the truss 1 through a guide groove fixing part 5.

[0043] The truss 1 is connected to a hydraulic lifting column 7.

[0044] An alignment fine-tuning component 6 is provided at the position where the truss 1 is connected to the hydraulic lifting column 7.

[0045] There is 1 straight-edge guide rail 11 and two pneumatic rolling components 4 are provided; there is 1 straight-edge guide groove 2.

[0046] There are two arc-edge guide rails 12, and each is provided with 1 pneumatic rolling component 4; there are 2 arc-edge guide grooves 3.

[0047] The pneumatic rolling component 4 includes a pneumatic device and a rolling wheel 41.

[0048] The hydraulic lifting column 7 is made of high-strength steel.

[0049] The straight-edge guide groove 2 and the arc-edge guide groove 3 are made of wear-resistant materials.

[0050] The straight-edge guide rail 11 and the arc-edge guide rail 12 are made of aluminum alloy or steel.

[0051] The guide groove fixing member 5 includes a first clamp 51 and a second clamp 52; both the upper parts of the first clamp 51 and the second clamp 52 are fixed to the truss 1 by bolts, and the lower parts are both connected to the straight-edge guide groove 2 or the arc-edge guide groove 3, and the straight-edge guide groove 2 or the arc-edge guide groove 3 is clamped and fixed by the first clamp 51 and the second clamp 52; the guide groove fixing member 5 is detachable.

[0052] Embodiment 2

[0053] The working process of this device is as follows: The filter disk 8 is composed of multiple semi-sector regions. When installing the filter cloth, it is installed one by one in units of semi-sector regions until the filter cloth covers the entire hollow circular filter disk. The specific steps are as follows:

[0054] (1) Filter cloth laying: First, unfold the new filter cloth and preliminarily lay it on the filter disk 8. At this time, one end of the filter cloth is placed in the straight-edge guide groove 2, and the filter cloth is unfolded and flattened along the guide groove to ensure that the filter cloth is in close contact with the surface of the filter disk 8.

[0055] (2) Alignment and fine adjustment: After the filter cloth is laid in place, the operator adjusts the truss 1 to be vertically aligned with a semi-sector region of the filter disk 8, and then the alignment and fine adjustment component 6 is started. The operator uses the remote control handle to adjust the alignment and fine adjustment component 6 to accurately align the edge of the filter cloth with the filter disk groove 81, eliminating any possible offsets or wrinkles. This step ensures the effective coverage of the filter cloth and the sealing of the filter disk 8.

[0056] (3) Rubber strip placement: Next, the operator places the rubber strip for fixing the filter cloth in the straight-edge guide groove 2 and the arc-edge guide groove 3, and adjusts the height of the truss 1 through the hydraulic lifting column 7. The rubber strip is positioned through the guide groove and accurately covers above the edge of the filter cloth, preparing to enter the next pressing operation.

[0057] (4) Pressing operation: Control the pneumatic rolling assembly 4 to move along the guide rail on the truss 1 through the remote control handle. The rolling wheel 41 of the pneumatic rolling assembly 4, under the drive of the pneumatic device, gradually presses the rubber strip into the filter disk groove 81 to complete the fixing operation of the filter cloth. The moving speed and pressure of the pneumatic rolling assembly 4 can be adjusted according to actual needs to ensure the close fit of the filter cloth and the filter disk 8. Specifically, there are two pneumatic rolling assemblies 4 on the straight-edge guide rail 11, and the two pneumatic rolling assemblies 4 move from the middle position of the straight-edge guide rail 11 to both sides; there is one pneumatic rolling assembly 4 on each of the two arc-edge guide rails 12, and the pneumatic rolling assembly 4 moves from one end of the arc-edge guide rail 12 to the other end to achieve the close fit of the filter cloth and the filter disk 8.

[0058] (5) Replacement of the filter cloth in adjacent semi-sector regions: The operator controls the hydraulic lifting column 7 through the remote control handle to lift the truss 1 to an appropriate height, adjust it above the adjacent semi-sector region, and repeat the operation steps (1) to (4).

[0059] (6) Completion and inspection after replacement: After the pressing and alignment operations of all filter cloths are completed, the operator resets the pneumatic rolling assembly 4 and lowers the hydraulic lifting column 7 to the initial position. Finally, the operator conducts a comprehensive inspection to confirm that the filter cloth is laid correctly and records various parameters during the replacement process for subsequent maintenance and analysis.

[0060] Only three guide rails and three guide grooves need to be set in this device to complete the installation of the filter cloth.

[0061] This device can be fixed at both ends of the filter press. By rotating the filter disk 8, the relative position adjustment between this device and the filter disk can be realized.

[0062] The entire replacement process is monitored in real time by the control system. The operator can view the operating status and operating parameters of the equipment through the HMI interface of the electric control cabinet. During the operation, if any abnormality is found, the control system will automatically alarm and guide the operator to make necessary adjustments or troubleshoot faults.

Claims

1. A filter cloth replacement device, characterized in that, It includes a truss (1). A straight-edge guide rail (11) and an arc-edge guide rail (12) are provided at the bottom of the truss (1). Both the straight-edge guide rail (11) and the arc-edge guide rail (12) are connected to a pneumatic rolling component (4). The rolling wheel (41) of the pneumatic rolling component (4) is connected to a straight-edge guide groove (2) or an arc-edge guide groove (3). The straight-edge guide groove (2) and the arc-edge guide groove (3) are connected to the truss (1) through guide groove fixing parts (5).

2. The filter cloth replacement device according to claim 1, characterized in that, The arc-edge guide groove (3) is located below the arc-edge guide rail (12), and the straight-edge guide groove (2) is located below the straight-edge guide rail (11).

3. The filter cloth replacement device according to claim 1, characterized in that The truss (1) is connected to a hydraulic lifting column (7).

4. The filter cloth replacement device according to claim 3, characterized in that, An alignment fine-tuning component (6) is provided at the connection between the truss (1) and the hydraulic lifting column (7).

5. The filter cloth replacement device according to claim 1, characterized in that, There is 1 straight-edge guide rail (11), and 2 pneumatic rolling components (4) are provided; there is 1 straight-edge guide groove (2).

6. The filter cloth replacement device according to claim 1, characterized in that, There are 2 arc-edge guide rails (12), and 1 pneumatic rolling component (4) is provided for each; there are 2 arc-edge guide grooves (3).

7. The filter cloth replacement device according to claim 1, characterized in that, The pneumatic rolling component (4) includes a pneumatic device and a rolling wheel (41).

8. The filter cloth replacement device according to claim 1, characterized in that, The guide groove fixing part (5) includes a clamp one (51) and a clamp two (52); both the upper parts of the clamp one (51) and the clamp two (52) are fixed to the truss (1) by bolts, and the lower parts are both connected to the straight-edge guide groove (2) or the arc-edge guide groove (3). The straight-edge guide groove (2) or the arc-edge guide groove (3) is clamped and fixed by the clamp one (51) and the clamp two (52); the guide groove fixing part (5) is detachable.

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