Positive pressure type centralized filter with sealing structure

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a positive pressure type centralized filtering machine with a sealing structure, the positive pressure type centralized filtering machine comprises a machine body, a filtering cavity is formed in the machine body, the front side of the machine body is movably connected with a cover plate covering an inlet of the filtering cavity, and the upper end of the machine body is provided with a sealing mechanism for driving the cover plate to turn over; the sealing mechanism comprises a pair of driving assemblies, each driving assembly comprises a hydraulic cylinder, a mounting block, a linkage plate and a fixing seat, the hydraulic cylinders are mounted at the upper end of the machine body, and the fixing seats are arranged on the front side of the cover plate; the upper end of the linkage plate is fixed to the end of a telescopic rod of the hydraulic cylinder through the mounting block, and the lower end of the linkage plate is fixed to the fixing base. The cover plate is locked by adopting a hydraulic jack closed structure, and a plurality of sealing layers are additionally arranged in the cover plate, so that the cover plate is better in sealing performance and more reliable in a high-pressure environment.

Description

Technical Field

[0001] This application relates to the technical field of filtering equipment, and particularly to a positive pressure centralized filter with a sealing structure. Background Art

[0002] The positive pressure centralized filter is an efficient solid-liquid separation device, widely used in industrial fields such as metallurgy, chemical industry, food, and pharmaceuticals. By applying positive pressure, it quickly filters the liquid through a filter cloth or filter screen while intercepting solid particles. During this process, the sealing of the filter chamber is crucial, and the sealing and clamping mechanism becomes the core part of the equipment, directly affecting the filtering effect and the stability of equipment operation.

[0003] In traditional positive pressure centralized filters, the sealing and clamping structure usually adopts a pneumatic system. An air cylinder is installed outside the frame of the filter, and the air cylinder provides pneumatic thrust and transmits the motion through a connecting rod. The other end of the connecting rod is connected to a cover plate, and the cover plate is fixed to the body through a hinge. When the air cylinder operates, the connecting rod drives the cover plate to press down or flip to close the filter chamber opening. This design uses the pneumatic system to keep the filter chamber in a high-pressure environment to ensure the smooth progress of the filtering process.

[0004] The pneumatic system has a fast response speed, simple control, and can precisely control the clamping force by adjusting the air pressure. However, the pressure fluctuation of the pneumatic system easily leads to poor sealing, especially under high-pressure working conditions, with poor airtightness; secondly, due to the relatively fast opening and closing speed of the air cylinder, mechanical vibration and impact are easily generated, affecting the stability and processing accuracy of the equipment. Therefore, the deficiencies of the pneumatic sealing system gradually become apparent in filtering processes with higher requirements. Utility Model Content

[0005] In order to improve the reliability of the high-pressure sealing of the filter chamber, this application provides a positive pressure centralized filter with a sealing structure.

[0006] The positive pressure centralized filter with a sealing structure provided by this application adopts the following technical solutions:

[0007] The positive pressure centralized filter with a sealing structure includes a body with a filter chamber formed inside. A cover plate that covers the entrance of the filter chamber is movably connected to the front side of the body, and a sealing mechanism for driving the cover plate to flip is arranged at the upper end of the body; the sealing mechanism includes a pair of driving components, and each driving component includes a hydraulic cylinder, a mounting block, a linkage plate, and a fixed seat. The hydraulic cylinder is installed at the upper end of the body, and the fixed seat is arranged at the front side of the cover plate; the upper end of the linkage plate is fixed to the end of the telescopic rod of the hydraulic cylinder through the mounting block, and the lower end of the linkage plate is fixed to the fixed seat.

[0008] By adopting the above technical solution, the hydraulic drive mechanism realizes the pushing of the cover plate, significantly improving the stability and accuracy of the operation, enabling the cover plate to be quickly and smoothly opened and closed under high-pressure environment, ensuring the sealing of the filtration chamber and preventing liquid leakage; in addition, this solution can also accurately control the clamping force according to the filtration requirements, thereby optimizing the filtration effect.

[0009] Optionally, it further includes a rotating seat, the rotating seat is arranged on the front side of the machine body, and the rotating seat is located above the cover plate, and the upper end of the linkage plate is rotatably connected to the rotating seat.

[0010] By adopting the above technical solution, the introduction of the rotating seat enables the hydraulic cylinder to change from linearly pushing the cover plate to driving the cover plate to flip. The rotating seat can disperse the stress generated during the flipping of the cover plate and improve the overall durability of the equipment.

[0011] Optionally, a plurality of partition plates are arranged at intervals on the upper end of the machine body, and the partition plates are attached to the side wall of the hydraulic cylinder.

[0012] By adopting the above technical solution, the plurality of partition plates can effectively improve the structural rigidity of the machine body and enhance the stability of the equipment; in addition, the fitting design of the partition plates and the hydraulic cylinder helps to better disperse the pressure, avoid local stress concentration, and reduce the deformation risk of the equipment under high-pressure working conditions.

[0013] Optionally, the partition plate is a trapezoidal plate.

[0014] Optionally, the inner side of the cover plate is designed with multi-layer sealing, and a rigid material layer and a flexible rubber layer are sequentially arranged from the inside to the outside on the inner side of the cover plate.

[0015] By adopting the above technical solution, the combination of the rigid material layer and the flexible rubber layer not only ensures the primary seal but also provides a second layer of seal under high-pressure conditions, effectively extending the seal life and reducing the maintenance frequency.

[0016] Optionally, an embedding groove is opened on the inner side of the cover plate, and the rigid material layer and the flexible rubber layer are sequentially embedded in the embedding groove from the inside to the outside, and the end face of the flexible rubber layer protrudes from the notch end face of the embedding groove.

[0017] By adopting the above technical solution, the design of the embedding groove enables the rigid material layer and the flexible rubber layer to be closely combined to form a more effective sealing structure; the protruding design of the end face of the flexible rubber layer helps to improve the sealing effect and ensure good sealing performance even in the case of minor surface unevenness. Description of the Drawings

[0018] Figure 1 It is a partial structural schematic diagram of a positive pressure type centralized filter with a sealing structure in an embodiment of the present application.

[0019] Figure 2 It is a cross-sectional view of the cover plate in the embodiment of the present application.

[0020] Explanation of reference numerals: 1, body; 11, filtration chamber; 12, partition; 2, cover plate; 21, embedding groove; 3, sealing mechanism; 31, driving component; 311, hydraulic cylinder; 312, mounting block; 313, linkage plate; 314, rotating seat; 315, fixed seat; 4, flexible rubber layer; 5, rigid material layer. Detailed implementation manners

[0021] The following further elaborates on the present application in conjunction with the attached Figure 1-2 drawings.

[0022] A coordinate system XYZ is set up in this article, where the positive direction of the Z-axis represents upward, the negative direction of the Z-axis represents downward, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the rear, the positive direction of the X-axis represents the right, and the negative direction of the X-axis represents the left.

[0023] The embodiment of the present application discloses a positive-pressure centralized filter with a sealing structure. Referring to Figure 1 , the positive-pressure centralized filter with a sealing structure includes a body 1 covered with a housing. A filtration chamber 11 is formed inside the body 1, and a filter cloth is laid in the filtration chamber 11 to intercept solid particles. The positive-pressure system introduces gas or liquid pressure into the filtration chamber 11 through a pipeline, so that the liquid to be filtered enters the chamber through the feed pipeline, penetrates the filter cloth under the action of pressure, and the filtered liquid is discharged through the liquid outlet pipeline, while the solids are left on the filter cloth.

[0024] A cover plate 2 is movably connected to the inlet of the filtration chamber 11. The cover plate 2 is locked by a sealing mechanism 3 to ensure the airtightness of the filtration chamber 11, guarantee the sealing effect under high pressure during the operation of the equipment, prevent pressure leakage, and ensure the smooth progress of the filtration process. The embodiment of the present application only improves the structure at the opening end of the filtration chamber 11 of the positive-pressure centralized filter, and the other structures and working principles of the equipment are the same as those of the existing equipment.

[0025] Two trapezoidal partitions 12 are welded at intervals along the left-right direction at the upper end of the body 1. The sealing mechanism 3 includes a pair of driving components 31. The partitions 12 are placed closely against the driving components 31. As a part of the body 1, the partitions 12 play a role in supporting and strengthening the structural rigidity. The design of the trapezoidal partitions 12 can better disperse the pressure conducted from the cover plate 2 to the body 1, avoid local stress concentration, and prevent deformation.

[0026] The driving assembly 31 includes a hydraulic cylinder 311, a mounting block 312, a linkage plate 313, a rotating seat 314, and a fixed seat 315. The bottom of the hydraulic cylinder 311 is mounted on the side wall of the machine body 1, outside the partition plate 12. An empty area is separated between the two hydraulic cylinders 311 by the two partition plates 12 for accommodating other components.

[0027] A pair of fixed seats 315 are bolted to the front side of the cover plate 2, and a pair of rotating seats 314 are bolted to the front side of the machine body 1 above the cover plate 2. The front end of the telescopic rod of the hydraulic cylinder 311 is fixed with a mounting block 312, and the front end of the mounting block 312 and the upper end of the linkage plate 313 are locked with bolts to realize the driving of the linkage plate 313 by the hydraulic cylinder 311. To achieve the purpose of flipping the cover plate 2 by driving the hydraulic cylinder 311, the upper end of the linkage block is also rotatably installed on the rotating seat 314, and the lower end of the linkage plate 313 is locked with bolts between the adjacent fixed seats 315. The two pairs of driving assemblies 31 are all installed in the above manner to improve the stability of the flipping of the cover plate 2.

[0028] Refer to Figure 2 , the inner side of the cover plate 2 is a composite sealing design. In this application, taking two layers of sealing materials as an example, the layer close to the medium is a flexible rubber layer 4, and the layer in direct contact with the cover plate 2 is a rigid material layer 5.

[0029] An embedding groove 21 is formed on the inner side of the cover plate 2, and a rigid material layer 5 and a flexible material layer are sequentially embedded in the embedding groove 21 from the inside to the outside, and the end face of the flexible material layer protrudes from the notch plane of the embedding groove 21.

[0030] The flexible rubber layer 4 is a sealing ring made of flexible rubber materials such as fluororubber and silicone rubber. This type of material has excellent flexibility and good elasticity, can provide good primary sealing, adapt to pressure changes and absorb minor surface unevenness; the rigid material layer 5 is a sealing ring made of rigid materials, such as metal sealing rings and high-performance polytetrafluoroethylene gaskets. This layer can withstand high-pressure and high-temperature working environments and has chemical corrosion resistance, playing a role in enhancing the sealing effect and extending the sealing life. When the pressure increases, the flexible rubber layer 4 can quickly adapt to the pressure change in the primary stage to ensure initial sealing; when the pressure reaches a high value, the rigid material layer 5 provides a second more stable sealing to disperse stress.

[0031] The implementation principle of the positive pressure type centralized filter with a sealing structure in this application embodiment is as follows: The machine body 1 performs the filtering work. At this time, the hydraulic cylinder 311 keeps the telescopic rod extended, so that the cover plate 2 presses against the side wall of the machine body 1 and closes the inlet of the filtering chamber 11. When the machine has worked for a period of time and internal maintenance or slag cleaning operations need to be carried out, the total control system controls the hydraulic cylinder 311 to drive the telescopic rod to retract, driving the cover plate 2 to turn up, exposing the inlet of the filtering chamber.

[0032] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. Positive pressure centralized filter with a sealing structure, characterized in that: It includes a body (1) with a filtration chamber (11) formed inside. A cover plate (2) covering the entrance of the filtration chamber (11) is movably connected to the front side of the body (1), and a sealing mechanism (3) for driving the cover plate (2) to flip is arranged at the upper end of the body (1). The sealing mechanism (3) includes a pair of driving components (31). The driving component (31) includes a hydraulic cylinder (311), a mounting block (312), a linkage plate (313), and a fixed seat (315). The hydraulic cylinder (311) is installed at the upper end of the body (1), and the fixed seat (315) is arranged at the front side of the cover plate (2). The upper end of the linkage plate (313) is fixed to the end of the telescopic rod of the hydraulic cylinder (311) through the mounting block (312), and the lower end of the linkage plate (313) is fixed to the fixed seat (315).

2. The positive pressure centralized filter with a sealing structure according to claim 1, wherein: It also includes a rotating seat (314). The rotating seat (314) is arranged at the front side of the body (1), and the rotating seat (314) is located above the cover plate (2). The upper end of the linkage plate (313) is rotatably connected to the rotating seat (314).

3. The positive pressure type centralized filter machine with a sealing structure according to claim 2, characterized in that: Multiple partition plates (12) are arranged at intervals at the upper end of the body (1), and the partition plates (12) are attached to the side wall of the hydraulic cylinder (311).

4. The positive pressure type centralized filter machine with a sealing structure according to claim 3, characterized in that: The partition plate (12) is a trapezoidal plate.

5. The positive pressure type centralized filter with a sealing structure according to claim 2, characterized in that: The inner side of the cover plate (2) is designed with multiple layers of seals. The inner side of the cover plate (2) is sequentially provided with a rigid material layer (5) and a flexible rubber layer (4) from the inside to the outside.

6. The positive pressure type centralized filter with a sealing structure according to claim 5, characterized in that: An embedding groove (21) is formed on the inner side of the cover plate (2). The rigid material layer (5) and the flexible rubber layer (4) are sequentially embedded in the embedding groove (21) from the inside to the outside, and the end face of the flexible rubber layer (4) protrudes from the notch end face of the embedding groove (21).

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