M-type drawer filter cartridge

Abstract

The utility model discloses a kind of M type drawer type filter elements, including tail plate and front plate, the tail plate is matched with access hole, the middle part of folding filter plate includes top plate, bottom plate, inner side plate and outer side plate, the top plate and bottom plate are respectively located at the top and bottom of folding filter plate, the top plate and bottom plate are connected with sealing plate by outer side plate, the top plate and bottom plate are connected in height direction by inner side plate, top plate and bottom plate are provided with closed surface in, evenly distributed with filter hole on the inner side plate and outer side plate, the top plate and bottom plate are arranged perpendicular to fluid flow direction, the inner side plate and outer side plate are arranged parallel to fluid flow direction.Compared with traditional ship type filter element, by increasing the number of top plate and bottom plate, greatly increase the filtration area, while reducing the pressure drop of fluid.

Description

Technical Field

[0001] This utility model relates to filter element structure, and in particular to an M-type drawer-type filter element. Background Technology

[0002] The core component of a petrochemical pipeline filter is the filter element, which primarily removes solid impurities from the transported medium through physical interception, ensuring the safe and clean operation of the pipeline system. Filter elements are typically made of metal mesh fiber felt or special composite materials, using single-layer or multi-layer structures to trap mechanical impurities such as rust particles and silt in crude oil or refined oil. By selecting filter elements with different filtration precision, critical downstream equipment, such as oil pumps, metering instruments, and control valves, can be protected from failure due to wear or blockage, extending equipment life and ensuring continuous and stable oil quality and transportation processes.

[0003] In the prior art, the applicant disclosed a T-type filter, Chinese Utility Model Patent Application No. "202422939739.0", which disclosed the structure of a traditional T-type filter, including an inlet, an outlet, an inspection port, an inspection pipe, and an inspection cover. Fluid enters the filter through the inlet, is filtered by a boat-shaped filter element, and leaves the filter from the outlet. The inspection pipe is perpendicular to the inlet and outlet. The filter element enters and exits the inspection pipe through the inspection port. However, the boat-shaped filter element only unfolds three sides, resulting in a low filtration area. Therefore, a filtration structure that increases the filtration area while reducing pressure drop is needed. Utility Model Content

[0004] The purpose of this invention is to provide an M-type drawer-type filter element, which has the advantages of large filtration area and reduced pressure drop.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an M-type drawer-type filter element, including a tail plate and a front plate, wherein the tail plate mates with an inspection port and abuts against the inner side of an inspection cover; the front plate extends axially along the inspection port and fits against the inner wall of the filter; a folded filter plate is provided between the front plate and the tail plate; one end of the folded filter plate in the length direction forms a sealed connection structure with the front plate; the rear end of the folded filter plate is connected to the tail plate; and both sides of the folded filter plate in the width direction extend horizontally to form sealing plates that mate with the inner wall of the inspection pipe. The front end of the plate along its length is connected to the front plate, and the rear end of the sealing plate along its length is connected to the tail plate. The middle part of the folded filter plate includes a top plate, a bottom plate, an inner side plate, and an outer side plate. The top plate and the bottom plate are located at the top and bottom of the folded filter plate, respectively. The top plate and the bottom plate are connected to the sealing plate through the outer side plate. The top plate and the bottom plate are connected in the height direction through the inner side plate. The top plate and the bottom plate are provided with a sealing surface. The inner side plate and the outer side plate are evenly distributed with filter holes. The top plate and the bottom plate are arranged perpendicular to the fluid flow direction, and the inner side plate and the outer side plate are arranged parallel to the fluid flow direction.

[0006] Preferably, the front plate is semi-circular in shape, the tail plate is circular, and the front plate and tail plate are arranged perpendicularly.

[0007] By adopting the above technical solution, the front plate fits into the inner wall of the filter, and a sealing effect is achieved at the edge of the front plate.

[0008] Preferably, the top plate, bottom plate, inner side plate, outer side plate and sealing plate extend along the axial direction of the inspection port, and the top plate and bottom plate are respectively arranged parallel to the front plate.

[0009] By adopting the above technical solution, the parallel arrangement of the top and bottom plates enhances the structural strength of the folded filter plate at that location.

[0010] Preferably, the top plate and the bottom plate are each provided with at least two pieces, the top plate and the inner side plate are connected by an arc surface, the top plate and the outer side plate are connected by an arc surface, the bottom plate and the inner side plate are connected by an arc surface, and the bottom plate and the outer side plate are connected by an arc surface.

[0011] By adopting the above technical solution, the curved corner of the plate facilitates bending of the plate and allows fluid to pass through more quickly, avoiding excessive stress at the corner and affecting the flow rate.

[0012] Preferably, the filter holes are disposed on the closed surface and extend along the length of the closed surface.

[0013] By adopting the above technical solution, the filter holes extend to the closed surface, which firstly facilitates the processing of the folded filter plate, and secondly allows fluid to enter, increasing the fluid velocity at that location and preventing the velocity from decreasing. At the same time, they are generally set at the location of the greatest fluid impact on the folded filter plate, making the overall flow velocity more uniform.

[0014] Preferably, the top plate is located on the inlet side, the bottom plate is located on the outlet side, and the width of the top plate is smaller than the width of the bottom plate.

[0015] By adopting the above technical solution, the obstruction area of ​​the closed surface facing the water inlet is reduced to ensure the fluid flow rate, while the wider bottom plate increases the subsequent filtration area and filtration effect.

[0016] Preferably, the sealing connection structure includes a first sealing plate and a second sealing plate, which are vertically disposed at the top and bottom of the front plate. The first sealing plate is circumferentially connected to the inner side plate, the outer side plate and the top plate, respectively, and the second sealing plate is circumferentially connected to the inner side plate, the outer side plate and the bottom plate, respectively.

[0017] By adopting the above technical solution, the first sealing plate and the second sealing plate are located on the side of the folded filter plate, which serve to seal the gap between the top plate and the bottom plate. At the same time, the first sealing plate, the second sealing plate and the folded filter plate are fixed together by welding.

[0018] Preferably, the first sealing plate and the second sealing plate are integrally formed with the front plate, and the connection between the first sealing plate and the second sealing plate and the front plate is formed by bending.

[0019] By adopting the above technical solution, the integrally formed first sealing plate and second sealing plate are easy to process, and the vertical state of the first sealing plate and second sealing plate can be achieved simply by sheet metal bending.

[0020] Preferably, deformation holes are provided on both sides of the connection position between the first sealing plate and the second sealing plate and the front plate in the width direction, and the diameter of the deformation holes is smaller than the thickness of the folded filter plate.

[0021] By adopting the above technical solution, the deformation hole avoids excessive compression deformation at the bending positions of the first and second sealing plates, and the deformation hole facilitates welding.

[0022] Preferably, the ends of the first sealing plate and the second sealing plate are bent to form a welding auxiliary rod, which is integrally formed with the first sealing plate and the second sealing plate, and the welding auxiliary rod extends outward in the height direction and abuts against the top plate or the bottom plate.

[0023] By adopting the above technical solution, the welding auxiliary rod expands the top and bottom plates outward in the height direction through the outward elastic force, which facilitates subsequent welding.

[0024] In summary, after the fluid enters the inlet, it first contacts the top plate, then flows around it and along the inner and outer plates towards the outlet. During this process, the inner and outer plates are parallel to the direction of fluid flow, and the filter holes on them act as filters. Compared with traditional boat-shaped filter elements, this design significantly increases the filtration area by increasing the number of top and bottom plates, while simultaneously reducing the pressure drop of the fluid. In this structure, the front plate, bottom plate, and sealing plate work together to create a circumferential seal, ensuring that the fluid only passes through the folded filter plate area. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown below; Figure 3 yes Figure 1 An enlarged schematic diagram of part B is shown below; Figure 4 This is a schematic diagram of the structure from the side of Example 1; Figure 5 This is a schematic diagram of the front panel in the unbent state of Example 2; In the diagram, 11 is the tail plate; 12 is the front plate; 2 is the folded filter plate; 21 is the sealing plate; 22 is the top plate; 23 is the bottom plate; 24 is the inner side plate; 25 is the outer side plate; 26 is the sealing surface; 27 is the filter hole; 31 is the first sealing plate; 32 is the second sealing plate; 33 is the deformation hole; and 34 is the welding auxiliary rod. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0028] Example 1: like Figures 1 to 4As shown, an M-type drawer-type filter element includes a tail plate 11 and a front plate 12. The tail plate 11 is circular in shape, that is, the tail plate 11 fits with the inspection port, and one side of the tail plate 11 abuts against the inner side of the inspection cover. The inspection cover serves to fix and limit the tail plate 11 in the axial direction. The front plate 12 extends along the axial direction of the inspection port and fits against the inner wall of the filter. A folded filter plate 2 is provided between the front plate 12 and the tail plate 11, and the folded filter plate 2 performs the filtering function. The rear end of the folded filter plate 2 is connected to the tail plate 11. The two sides of the folded filter plate 2 in the width direction extend horizontally to form a sealing plate 21 that fits against the inner wall of the inspection pipe. The sealing plate 21 can be integrally bent into shape, or the sealing plate 21 can be integrally formed with the front plate 12. The front end of the sealing plate 21 in the length direction is connected to the front plate 12, and the rear end of the sealing plate 21 in the length direction is welded and fixed to the tail plate 11.

[0029] like Figures 1 to 4 As shown, the specific structure of the folded filter plate 2 is as follows: the middle part of the folded filter plate 2 includes a top plate 22, a bottom plate 23, an inner side plate 24, and an outer side plate 25. The top plate 22 and the bottom plate 23 are located at the top and bottom of the folded filter plate 2, respectively. In embodiment 1, two top plates 22 and two bottom plates 23 are provided. In actual cases, the number of top plates 22 and bottom plates 23 can be increased according to the flow rate and pressure requirements. The top plate 22 and the bottom plate 23 are integrally formed or welded to the sealing plate 21 through the outer side plate 25. One side of plate 22 and bottom plate 23 are connected in the height direction by inner side plate 24. The surfaces of top plate 22 and bottom plate 23 are closed surfaces 26. The closed surfaces 26 serve to block the fluid and improve the structural strength, allowing the fluid to flow from both sides to inner side plate 24 and outer side plate 25, and then through filter holes 27. Filter holes 27 are evenly distributed on inner side plate 24 and outer side plate 25. Top plate 22 and bottom plate 23 are set perpendicular to the fluid flow direction, while inner side plate 24 and outer side plate 25 are set parallel to the fluid flow direction.

[0030] like Figure 1 As shown, the front plate 12 and the bottom plate 23 are arranged vertically in space. The top plate 22, bottom plate 23, inner side plate 24, outer side plate 25 and sealing plate 21 of the folded filter plate 2 extend along the axial direction of the inspection port. The top plate 22 and the bottom plate 23 are arranged parallel to the front plate 12 respectively.

[0031] like Figure 3 As shown, in order to increase the flow velocity of the fluid and reduce the decrease in flow velocity, the top plate 22 and the inner side plate 24 are connected by an arc surface, the top plate 22 and the outer side plate 25 are connected by an arc surface, the bottom plate 23 and the inner side plate 24 are connected by an arc surface, and the bottom plate 23 and the outer side plate 25 are connected by an arc surface.

[0032] like Figure 1As shown, one end of the folded filter plate 2 along its length forms a sealed connection structure with the front plate 12. Specifically, the sealed connection structure includes a first sealing plate (31) and a second sealing plate (32). The first sealing plate (31) and the second sealing plate (32) are vertically arranged at the top and bottom of the front plate 12. The first sealing plate (31) is circumferentially connected to the inner side plate 24, the outer side plate 25 and the top plate 22, respectively. The second sealing plate (32) is circumferentially connected to the inner side plate 24, the outer side plate 25 and the bottom plate 23, respectively. In embodiment 1, the first sealing plate (31) and the second sealing plate (32) are fixed to the front plate 12 by welding.

[0033] like Figures 1 to 4 As shown, the top plate 22 is located on the inlet side and the bottom plate 23 is located on the outlet side. In order to further improve the filtration effect, the filter holes 27 on the top plate 22 and the bottom plate 23 extend to the closed surface 26. At the same time, the filter holes 27 extend along the length of the closed surface 26 to increase the flow rate of the fluid. In this embodiment, in order to reduce the pressure drop and increase the filtration area, the width of the top plate 22 is smaller than the width of the bottom plate 23.

[0034] Working principle: After the fluid enters the inlet, it first contacts the top plate 22. Due to the presence of the sealing surface 26, the fluid bypasses the top plate 22 and flows along the inner side plate 24 and the outer side plate 25 towards the outlet. During the process of passing through the inner side plate 24 and the outer side plate 25, since the inner side plate 24 and the outer side plate 25 are set parallel to the direction of fluid flow, and the sealing surface 26 is also set on the bottom plate 23, the fluid can only pass through the filter holes 27 on the inner side plate 24 and the outer side plate 25 and flow towards the filter holes 27 in a horizontal or inclined direction, and finally flows out of the filter from the outlet.

[0035] Example 2: like Figure 5 As shown, in Embodiment 2, the front plate 12, the first sealing plate (31) and the second sealing plate 32 are integrally formed. The front plate 12, the first sealing plate (31) and the second sealing plate 32 are formed by stamping sheet metal. The first sealing plate (31) and the second sealing plate 32 are perpendicular to the front plate 12 by sheet metal bending at the connection position of the front plate 12. In order to reduce the deformation at the bending position, deformation holes 33 are provided on both sides of the connection position of the first sealing plate (31) and the second sealing plate 32 with the front plate 12 in the width direction. The diameter of the deformation holes 33 is smaller than the thickness of the folded filter plate 2.

[0036] like Figure 5As shown, the ends of the first sealing plate (31) and the second sealing plate (32) are bent to form a welding auxiliary rod 34. The welding auxiliary rod 34 is integrally formed with the first sealing plate (31) and the second sealing plate (32). The welding auxiliary rod 34 extends outward in the height direction and abuts against the top plate 22 or the bottom plate 23. That is, when the folded filter plate 2 is welded, it plays a role in pre-positioning on the inner side through elastic deformation, which facilitates welding.

Claims

1. An M-type drawer-type filter element, characterized in that: The filter includes a tail plate (11) and a front plate (12). The tail plate (11) mates with the inspection port and abuts against the inner side of the inspection cover. The front plate (12) extends axially along the inspection port and fits against the inner wall of the filter. A folded filter plate (2) is provided between the front plate (12) and the tail plate (11). One end of the folded filter plate (2) in the length direction forms a sealed connection structure with the front plate (12). The rear end of the folded filter plate (2) is connected to the tail plate (11). Both sides of the folded filter plate (2) in the width direction extend horizontally to form sealing plates (21) that mate with the inner wall of the inspection pipe. The front end of the sealing plate (21) in the length direction is connected to the front plate (12), and the rear end of the sealing plate (21) in the length direction is connected to the tail plate (11). The middle part of the folded filter plate (2) includes a top plate (22), a bottom plate (23), an inner side plate (24), and an outer side plate (25). The top plate (22) and the bottom plate (23) are located at the top and bottom of the folded filter plate (2), respectively. The top plate (22) and the bottom plate (23) are connected to the sealing plate (21) through the outer side plate (25). The top plate (22) and the bottom plate (23) are connected in the height direction through the inner side plate (24). The top plate (22) and the bottom plate (23) are provided with a sealing surface (26). The inner side plate (24) and the outer side plate (25) are uniformly distributed with filter holes (27). The top plate (22) and the bottom plate (23) are arranged perpendicular to the fluid flow direction, and the inner side plate (24) and the outer side plate (25) are arranged parallel to the fluid flow direction.

2. The M-type drawer-type filter element according to claim 1, characterized in that: The front plate (12) is semi-circular in shape, the tail plate (11) is circular, and the front plate (12) and the tail plate (11) are arranged vertically.

3. The M-type drawer-type filter element according to claim 1, characterized in that: The top plate (22), bottom plate (23), inner side plate (24), outer side plate (25) and sealing plate (21) extend along the axial direction of the inspection port, and the top plate (22) and bottom plate (23) are respectively arranged parallel to the front plate (12).

4. The M-type drawer-type filter element according to claim 3, characterized in that: The top plate (22) and the bottom plate (23) are each provided with at least two pieces. The top plate (22) and the inner side plate (24) are connected by an arc surface. The top plate (22) and the outer side plate (25) are connected by an arc surface. The bottom plate (23) and the inner side plate (24) are connected by an arc surface. The bottom plate (23) and the outer side plate (25) are connected by an arc surface.

5. The M-type drawer-type filter element according to claim 4, characterized in that: The filter hole (27) is disposed on the closed surface (26) and extends along the length direction of the closed surface (26).

6. The M-type drawer-type filter element according to claim 1, characterized in that: The top plate (22) is located on the inlet side, and the bottom plate (23) is located on the outlet side. The width of the top plate (22) is smaller than the width of the bottom plate (23).

7. The M-type drawer-type filter element according to claim 4, characterized in that: The sealing connection structure includes a first sealing plate (31) and a second sealing plate (32). The first sealing plate (31) and the second sealing plate (32) are vertically arranged at the top and bottom of the front plate (12). The first sealing plate (31) is circumferentially connected to the inner side plate (24), the outer side plate (25) and the top plate (22), respectively. The second sealing plate (32) is circumferentially connected to the inner side plate (24), the outer side plate (25) and the bottom plate (23), respectively.

8. The M-type drawer-type filter element according to claim 7, characterized in that: The first sealing plate (31) and the second sealing plate (32) are integrally formed with the front plate (12), and the connection between the first sealing plate (31) and the second sealing plate (32) and the front plate (12) is formed by bending.

9. The M-type drawer-type filter element according to claim 8, characterized in that: Deformation holes (33) are provided on both sides of the connection position between the first sealing plate (31) and the second sealing plate (32) and the front plate (12) in the width direction. The diameter of the deformation holes (33) is smaller than the thickness of the folded filter plate (2).

10. The M-type drawer-type filter element according to claim 9, characterized in that: The ends of the first sealing plate (31) and the second sealing plate (32) are bent to form a welding auxiliary rod (34). The welding auxiliary rod (34) is integrally formed with the first sealing plate (31) and the second sealing plate (32). The welding auxiliary rod (34) extends outward in the height direction and abuts against the top plate (22) or the bottom plate (23).

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