A T-type filter

Abstract

A T-type filter includes a T-shaped three-way outer shell, a filter element, an elastic clamping component, a sealing flange plate, and a sealing gasket. This invention employs a single-core filter structure and a T-shaped layout, integrating the filtration function into one unit. Compared to traditional multi-core filters, the internal space is simplified, and the overall structure is more compact. Cleaning or replacement of the filter element can be achieved simply by quickly removing the sealing flange plate. During reinstallation, the filter element can be directly pushed into place by applying a pushing force through the elastic clamping component. The filter element uses an integrated welded stainless steel mesh structure, improving wear and corrosion resistance, and more smoothly guiding the liquid medium through the mesh of the filter element, reducing the flow resistance of the liquid medium, resulting in high filtration efficiency and a long service life. The sealing gasket prevents liquid medium leakage, and the sealing ring prevents liquid medium from seeping into and corroding the thrust spring, further extending the service life of the T-type filter through reliable sealing performance.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal pump filter technology, and in particular relates to a T-type filter. Background Technology

[0002] Filters are used in many fields such as petrochemicals, steel metallurgy, urban heating, refrigeration, air separation, light industry, food, and pharmaceuticals to remove small amounts of solid particles from liquid media in order to protect the normal operation of equipment.

[0003] Pump filters are important devices for removing solid impurities during the pipeline transportation of liquids or gases. They are usually installed at the inlet end of centrifugal pumps to filter solid impurities such as welding slag, rust, and sand particles from the medium. This prevents large-volume debris from entering the centrifugal pump and causing wear or jamming of components such as impellers and wear rings, thereby protecting the safe and stable operation of the centrifugal pump.

[0004] However, traditional pump filters still have the following problems in terms of structural design and maintenance: ① It is relatively large and takes up installation space.

[0005] Existing pump filters typically have their filter screens built into the valve body. To meet certain filtration area and flow capacity requirements, the housing size of pump filters is often large. In cases where the inlet space of a centrifugal pump is limited, the large filter volume not only increases the difficulty of pipeline layout but also increases the load on the pipeline system.

[0006] In addition, the effective filter area of ​​existing pump filters can only reach the cross-sectional area of ​​the pipe in the direction of liquid flow. Combined with the sealing baffle, this results in greater flow resistance. Furthermore, the truncated cone-shaped filter cartridge is horizontally arranged inside the filter and is prone to loosening and deformation after being impacted by the liquid medium.

[0007] ② Disassembly and maintenance are difficult, and cleaning is complicated.

[0008] The filter element of the existing pump filter is located between the inlet and outlet of the filter. When it is necessary to clean or replace the filter screen, the entire pump filter needs to be removed from the pipeline in order to remove the filter screen for cleaning. This process is not only time-consuming and labor-intensive, but also requires a large operating space.

[0009] In addition, existing pump filters often open vertically downwards, making on-site work difficult and inconvenient to inspect the internal condition, especially when installed at the inlet of a centrifugal pump. In order to raise the cover of the pump filter high enough off the ground for easy cleaning, the installation height of the centrifugal pump often needs to be increased, which increases the construction difficulty and project investment.

[0010] Therefore, as industrial equipment develops towards larger and more continuous operation, higher demands are placed on the ease of maintenance and space utilization of equipment. Thus, developing a pump filter that is small in size and easy to disassemble quickly has significant engineering application value. Summary of the Invention

[0011] To address the problems existing in the prior art, this invention provides a T-type filter, which features a compact structure, saves installation space, is easy to disassemble and maintain, has high filtration efficiency, long service life, and reliable sealing performance.

[0012] To achieve the above objectives, the present invention adopts the following technical solution: a T-type filter, comprising a T-type three-way outer shell, a filter component, an elastic clamping component, a sealing flange plate, and a sealing gasket; the filter component is disposed inside the T-type three-way outer shell; the sealing flange plate is fixedly installed at the bottom of the T-type three-way outer shell; the elastic clamping component is disposed between the filter component and the sealing flange plate; and the sealing gasket is disposed between the T-type three-way outer shell and the sealing flange plate.

[0013] The two openings of the horizontal section of the T-shaped three-way outer shell are, in sequence, a liquid inlet and a liquid outlet. The bottom opening of the vertical section of the T-shaped three-way outer shell is the filter component disassembly / assembly port. A first cylinder port adapter flange is fixedly installed at the liquid inlet, and the first cylinder port adapter flange is connected to an external liquid inlet pipe via a bolt assembly. A second cylinder port adapter flange is fixedly installed at the liquid outlet, and the second cylinder port adapter flange is connected to the centrifugal pump inlet via a bolt assembly. A third cylinder port adapter flange is fixedly installed at the filter component disassembly / assembly port, and the sealing flange plate is connected to the third cylinder port adapter flange via a bolt assembly. The sealing gasket is located between the sealing flange plate and the third cylinder port adapter flange.

[0014] The filter component includes a mesh filter cylinder, a mesh bottom sealing plate, and a mesh L-shaped filter plate. The mesh filter cylinder is coaxially arranged inside the vertical section of the T-shaped three-way outer shell, with a circumferential gap between the mesh filter cylinder and the vertical section of the T-shaped three-way outer shell. The vertical section of the L-shaped filter plate is located at the center of the horizontal section of the T-shaped three-way outer shell, and the horizontal section of the L-shaped filter plate faces the liquid outlet of the T-shaped three-way outer shell, and is fixedly connected to the top opening of the mesh filter cylinder. The mesh bottom sealing plate is horizontally fixed at the bottom opening of the mesh filter cylinder.

[0015] A perforated annular plate is provided within the circumferential gap. The inner circumferential edge of the perforated annular plate is fixedly connected to the outer surface of the perforated filter cylinder, and the outer circumferential edge of the perforated annular plate is in contact with the vertical cylinder section of the T-shaped three-way outer shell.

[0016] A first baffle and a second baffle are horizontally fixedly arranged on the inner surface of the mesh filter cylinder below the L-shaped filter plate; the first baffle and the second baffle are staggered along the axial direction of the mesh filter cylinder.

[0017] The perforated filter cylinder, perforated bottom sealing plate, perforated L-shaped filter plate, perforated annular plate, first baffle and second baffle are welded together to form an integral structure.

[0018] The mesh size of the mesh filter cylinder, mesh bottom sealing plate, mesh L-shaped filter plate, and mesh annular plate is φ2mm~φ4mm.

[0019] The elastic clamping component includes an outer top block, an inner top block, a thrust spring, and a sealing ring. An inner insertion hole is vertically arranged below the interior of the outer top block, and the top of the outer top block abuts against the lower surface of the mesh-type bottom sealing plate. The inner top block is coaxially inserted into the inner insertion hole, with its lower end extending to the outside of the inner insertion hole. The thrust spring is disposed in the inner insertion hole, with its lower end fixedly connected to the upper end of the inner top block and its upper end fixedly connected to the outer top block. The sealing ring is coaxially fixedly installed within the annular groove of the inner insertion hole, and the sealing ring makes a sealing sliding contact with the outer surface of the inner top block.

[0020] A groove is provided on the inner surface of the sealing flange plate, and the lower end of the inner top block is fixedly inserted into the groove.

[0021] The outer and inner top blocks of the filter component and the elastic clamping component are both made of stainless steel.

[0022] The beneficial effects of this invention are: The T-type filter of this invention adopts a single-core filter structure and T-shaped layout, integrating the filtration function into one unit. Compared with traditional multi-core filters, the internal space is simplified and the overall structure is more compact, effectively solving the problem of tight space at the inlet of centrifugal pumps. It has the characteristics of compact structure and saving installation space.

[0023] The T-type filter of the present invention can effectively meet the cleaning or replacement of filter components by simply disassembling the sealing flange plate. After the filter components have been cleaned or replaced, the filter components can be directly pushed into place by applying a pushing force through the elastic clamping component through the quick reinstallation of the sealing flange plate. There is no need for a complicated positioning process and a high-precision positioning structure, which has the characteristics of convenient disassembly and maintenance.

[0024] The T-type filter of the present invention adopts an integrated welded stainless steel mesh structure for the filter component, which improves wear resistance and corrosion resistance, and can guide the liquid medium to flow through the mesh of the filter component more smoothly, effectively reducing the flow resistance of the liquid medium. It has the characteristics of high filtration efficiency and long service life.

[0025] The T-type filter of the present invention, by setting a sealing gasket, can effectively prevent liquid media from leaking out through the disassembly port of the filter component, and by setting a sealing rubber ring, can effectively prevent liquid media from entering the inner insertion hole and corroding the thrust spring, thereby improving the reliability of sealing performance and further extending the service life of the T-type filter. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a T-type filter according to the present invention; Figure 2 This is a schematic diagram of the T-shaped three-way outer shell of the present invention; Figure 3 This is a schematic diagram of the structure of the filter component of the present invention; Figure 4 This is a schematic diagram of the structure of the elastic clamping member of the present invention; Figure 5 This is a schematic diagram of the sealing flange plate of the present invention; In the diagram, 1—T-type three-way outer shell cylinder, 2—filter component, 3—elastic clamping component, 4—sealing flange plate, 5—sealing gasket, 6—liquid inlet, 7—liquid outlet, 8—filter component disassembly / assembly port, 9—first cylinder inlet transition flange, 10—second cylinder inlet transition flange, 11—third cylinder inlet transition flange, 12—mesh filter cylinder, 13—mesh bottom sealing plate, 14—mesh L-shaped filter plate, 15—circumferential gap, 16—mesh annular plate, 17—first baffle, 18—second baffle, 19—outer top block, 20—inner top block, 21—thrust spring, 22—sealing ring, 23—inner insertion hole, 24—groove hole. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-5 As shown, a T-type filter includes a T-shaped three-way outer shell 1, a filter component 2, an elastic clamping component 3, a sealing flange plate 4, and a sealing gasket 5; the filter component 2 is disposed inside the T-shaped three-way outer shell 1; the sealing flange plate 4 is fixedly installed at the bottom of the T-shaped three-way outer shell 1; the elastic clamping component 3 is disposed between the filter component 2 and the sealing flange plate 4; and the sealing gasket 5 is disposed between the T-shaped three-way outer shell 1 and the sealing flange plate 4.

[0029] The two openings of the horizontal section of the T-shaped three-way outer shell cylinder 1 are, in sequence, an inlet 6 and an outlet 7. The bottom opening of the vertical section of the T-shaped three-way outer shell cylinder 1 is a filter component disassembly / assembly port 8. A first cylinder port transition flange 9 is fixedly installed at the inlet 6, and the first cylinder port transition flange 9 is connected to an external inlet pipe by a bolt assembly. A second cylinder port transition flange 10 is fixedly installed at the outlet 7, and the second cylinder port transition flange 10 is connected to the centrifugal pump inlet by a bolt assembly. A third cylinder port transition flange 11 is fixedly installed at the filter component disassembly / assembly port 8. The sealing flange plate 4 is connected to the third cylinder port transition flange 11 by a bolt assembly, and the sealing gasket 5 is located between the sealing flange plate 4 and the third cylinder port transition flange 11.

[0030] The filter component 2 includes a mesh filter cylinder 12, a mesh bottom sealing plate 13, and a mesh L-shaped filter plate 14. The mesh filter cylinder 12 is coaxially arranged inside the vertical section of the T-shaped three-way outer shell cylinder 1, with a circumferential gap 15 between the mesh filter cylinder 12 and the vertical section of the T-shaped three-way outer shell cylinder 1. The vertical section of the L-shaped filter plate 14 is located at the center of the horizontal section of the T-shaped three-way outer shell cylinder 1, and the horizontal section of the L-shaped filter plate 14 faces the liquid outlet 7 of the T-shaped three-way outer shell cylinder 1. The horizontal section of the L-shaped filter plate 14 is fixedly connected to the top opening of the mesh filter cylinder 12. The mesh bottom sealing plate 13 is horizontally fixedly arranged at the bottom opening of the mesh filter cylinder 12.

[0031] A perforated annular plate 16 is provided within the circumferential gap 15. The inner circumferential edge of the perforated annular plate 16 is fixedly connected to the outer surface of the perforated filter cylinder 12, and the outer circumferential edge of the perforated annular plate 16 is in contact with the vertical cylinder section of the T-shaped three-way outer shell cylinder 1.

[0032] A first baffle 17 and a second baffle 18 are horizontally fixedly arranged on the inner surface of the mesh filter cylinder 12 below the L-shaped filter plate 14; the first baffle 17 and the second baffle 18 are staggered along the axial direction of the mesh filter cylinder 12.

[0033] The perforated filter cylinder 12, perforated bottom sealing plate 13, perforated L-shaped filter plate 14, perforated annular plate 16, first baffle 17 and second baffle 18 are welded together to form an integral structure.

[0034] The mesh size of the mesh filter cylinder 12, mesh bottom sealing plate 13, mesh L-shaped filter plate 14, and mesh annular plate 16 is φ2mm to φ4mm. In specific implementation, the mesh size can be determined according to the density of the liquid medium.

[0035] The elastic clamping component 3 includes an outer top block 19, an inner top block 20, a thrust spring 21, and a sealing ring 22. An inner insertion hole 23 is vertically arranged below the interior of the outer top block 19, and the top of the outer top block 19 abuts against the lower surface of the mesh bottom sealing plate 13. The inner top block 20 is coaxially inserted into the inner insertion hole 23, and the lower end of the inner top block 20 extends to the outside of the inner insertion hole 23. The thrust spring 21 is arranged in the inner insertion hole 23, and the lower end of the thrust spring 21 is fixedly connected to the upper end of the inner top block 20, and the upper end of the thrust spring 21 is fixedly connected to the outer top block 19. The sealing ring 22 is coaxially fixed in the annular groove of the inner insertion hole 23, and the sealing ring 22 has a sealing sliding contact with the outer surface of the inner top block 20.

[0036] A groove hole 24 is provided on the inner surface of the sealing flange plate 4, and the lower end of the inner top block 20 is fixedly inserted into the groove hole 24.

[0037] The outer top block 19 and inner top block 20 of the filter component 2 and the elastic clamping component 3 are all made of stainless steel.

[0038] During use, the liquid medium first flows through the external inlet pipe, then through the inlet 6 into the transverse section of the T-type three-way outer shell cylinder 1, then through the filter component 2, and then out of the transverse section of the T-type three-way outer shell cylinder 1 from the outlet 7, and finally into the centrifugal pump.

[0039] During the flow of the liquid medium through the filter element 2, solid particles carried in the liquid medium are intercepted by the perforated L-shaped filter plate 14, the perforated filter cylinder 12, the perforated annular plate 16, and the perforated bottom seal plate 13. Only clean liquid medium with solid particles removed is allowed to enter the centrifugal pump. At the same time, most of the solid particles intercepted by the filter remain in the perforated filter cylinder 12, and the staggered first baffle 17 and second baffle 18 can effectively prevent the backflow of solid particles in the perforated filter cylinder 12.

[0040] When the filter element 2 needs to be cleaned or replaced, first remove the sealing flange plate 4, then remove the filter element 2 from the filter element removal port 8 of the T-type three-way shell cylinder 1, and then clean or replace the removed filter element 2. After cleaning or replacement, reinstall the sealing flange plate 4.

[0041] After the sealing flange plate 4 is reinstalled, the thrust spring 21 of the elastic clamping member 3 will automatically apply the pushing force and push the filter member 2 directly into place through the outer top block 19.

[0042] The solutions in the embodiments are not intended to limit the scope of protection of the present invention. All equivalent implementations or modifications that do not depart from the present invention are included in the scope of protection of the present invention.

Claims

1. A T-type filter, characterized in that: The device includes a T-shaped three-way outer shell, a filter component, an elastic clamping component, a sealing flange plate, and a sealing gasket; the filter component is disposed inside the T-shaped three-way outer shell; the sealing flange plate is fixedly installed at the bottom of the T-shaped three-way outer shell; the elastic clamping component is disposed between the filter component and the sealing flange plate; and the sealing gasket is disposed between the T-shaped three-way outer shell and the sealing flange plate.

2. A T-type filter according to claim 1, characterized in that: The two openings of the horizontal section of the T-shaped three-way outer shell are, in sequence, a liquid inlet and a liquid outlet. The bottom opening of the vertical section of the T-shaped three-way outer shell is the filter component disassembly / assembly port. A first cylinder port adapter flange is fixedly installed at the liquid inlet, and the first cylinder port adapter flange is connected to an external liquid inlet pipe via a bolt assembly. A second cylinder port adapter flange is fixedly installed at the liquid outlet, and the second cylinder port adapter flange is connected to the centrifugal pump inlet via a bolt assembly. A third cylinder port adapter flange is fixedly installed at the filter component disassembly / assembly port, and the sealing flange plate is connected to the third cylinder port adapter flange via a bolt assembly. The sealing gasket is located between the sealing flange plate and the third cylinder port adapter flange.

3. A T-type filter according to claim 2, characterized in that: The filter component includes a mesh filter cylinder, a mesh bottom sealing plate, and a mesh L-shaped filter plate. The mesh filter cylinder is coaxially arranged inside the vertical section of the T-shaped three-way outer shell, with a circumferential gap between the mesh filter cylinder and the vertical section of the T-shaped three-way outer shell. The vertical section of the L-shaped filter plate is located at the center of the horizontal section of the T-shaped three-way outer shell, and the horizontal section of the L-shaped filter plate faces the liquid outlet of the T-shaped three-way outer shell, and is fixedly connected to the top opening of the mesh filter cylinder. The mesh bottom sealing plate is horizontally fixed at the bottom opening of the mesh filter cylinder.

4. A T-type filter according to claim 3, characterized in that: A perforated annular plate is provided within the circumferential gap. The inner circumferential edge of the perforated annular plate is fixedly connected to the outer surface of the perforated filter cylinder, and the outer circumferential edge of the perforated annular plate is in contact with the vertical cylinder section of the T-shaped three-way outer shell.

5. A T-type filter according to claim 4, characterized in that: A first baffle and a second baffle are horizontally fixedly arranged on the inner surface of the mesh filter cylinder below the L-shaped filter plate; the first baffle and the second baffle are staggered along the axial direction of the mesh filter cylinder.

6. A T-type filter according to claim 5, characterized in that: The perforated filter cylinder, perforated bottom sealing plate, perforated L-shaped filter plate, perforated annular plate, first baffle and second baffle are welded together to form an integral structure.

7. A T-type filter according to claim 4, characterized in that: The mesh size of the mesh filter cylinder, mesh bottom sealing plate, mesh L-shaped filter plate, and mesh annular plate is φ2mm~φ4mm.

8. A T-type filter according to claim 3, characterized in that: The elastic clamping component includes an outer top block, an inner top block, a thrust spring, and a sealing ring. An inner insertion hole is vertically arranged below the interior of the outer top block, and the top of the outer top block abuts against the lower surface of the mesh-type bottom sealing plate. The inner top block is coaxially inserted into the inner insertion hole, with its lower end extending to the outside of the inner insertion hole. The thrust spring is disposed in the inner insertion hole, with its lower end fixedly connected to the upper end of the inner top block and its upper end fixedly connected to the outer top block. The sealing ring is coaxially fixedly installed within the annular groove of the inner insertion hole, and the sealing ring makes a sealing sliding contact with the outer surface of the inner top block.

9. A T-type filter according to claim 8, characterized in that: A groove is provided on the inner surface of the sealing flange plate, and the lower end of the inner top block is fixedly inserted into the groove.

10. A T-type filter according to claim 8, characterized in that: The outer and inner top blocks of the filter component and the elastic clamping component are both made of stainless steel.

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