A candle filter cartridge

Abstract

The utility model relates to filter element field, concretely relates to a candle type filter element. Include: filter element framework, the filter element framework includes the inner tube and the closed ring around one group of hole pipe of inner tube outer periphery, and the hole pipe side wall is equipped with the perforation, and the side wall of adjacent pair of hole pipe mutually pastes together, the filter element framework still includes lower envelope and upper envelope, the lower envelope upper end opening, and the opening end of lower envelope is covered in one group of hole pipe's lower extreme, and the lower envelope is equipped with the cavity that communicates with the opening end in, and the cavity communicates hole pipe and the tubular cavity of inner tube, the upper envelope is covered in one group of hole pipe's upper extreme, and the inner tube is from the upper envelope and is fixed with the upper envelope, and the inner tube that goes out on the upper end of upper envelope is equipped with the connecting section, filter bag, filter bag is set in the lower of filter element framework outside corresponding connecting section. Reduced the connecting node of flow passage part, reduced the risk of leakage, guaranteed the filtration effectiveness.

Description

Technical Field

[0001] This utility model relates to the field of filter elements, specifically to a candle filter element. Background Technology

[0002] Candle filters are a type of filtration equipment widely used in chemical, pharmaceutical and other fields. The design of its core component, the filter element, directly affects filtration efficiency and stability.

[0003] Traditional plum blossom-shaped filter element structures, such as the detachable candle-type filter element disclosed in Chinese invention patent application number 201210080125.0, involve separate designs for the filter element connector corresponding to the liquid outlet and the flow channel corresponding to the central hole. This results in a high degree of connection complexity and an excessive number of component sections forming the flow channel, increasing the number of leakage points and maintenance difficulties. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a candle filter element that reduces the number of connection points in the flow channel components, lowers the risk of leakage, and ensures filtration effectiveness.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A candle filter element, comprising: The filter element frame includes an inner tube and a set of perforated tubes that surround the outer periphery of the inner tube. The sidewalls of the perforated tubes are densely covered with perforations, and the sidewalls of adjacent pairs of perforated tubes are in close contact with each other. The filter element frame also includes a lower sleeve and an upper sleeve. The upper sleeve is open at its upper end and covers the lower end of the set of perforated tubes. The lower sleeve has a cavity that communicates with the open end and connects the cavity of the perforated tubes and the inner tube. The upper sleeve covers the upper end of the set of perforated tubes. The inner tube passes through the upper sleeve and is fixed to the upper sleeve. A connecting section is provided on the inner tube that passes through the upper end of the upper sleeve. The filter bag is fitted over the filter element frame and placed below the corresponding connecting section.

[0006] Furthermore, in a candle filter element of this application, the outer side of the upper cover is provided with an annular limiting groove, the filter bag is provided with an opening, and one end of the filter bag corresponding to the opening is fitted onto the annular limiting groove. It also includes a clamp, which is fitted over the upper cover and tightens the connection between the filter bag and the annular limiting groove. As a preferred embodiment of this application, the annular limiting groove is used to limit the clamp, ensuring that the clamp tightens the corresponding open end of the filter bag onto the annular limiting groove to form a sealing structure, ensuring a secure connection of the filter bag, preventing filtrate leakage, and improving filtration efficiency.

[0007] Furthermore, in one candle filter element of this application, the lower and upper caps are metal housing components. As a preferred embodiment of this application, the lower and upper caps can be formed by stamping, which has the advantages of low manufacturing cost and lightweight design.

[0008] Furthermore, in one type of candle filter element of this application, the open end of the lower sleeve is welded to the lower side wall of a set of perforated tubes, and the upper sleeve is welded to the upper side wall of the perforated tubes.

[0009] Furthermore, in one type of candle filter element of this application, the lower end of the connecting section is provided with a wrench with a polygonal outer edge profile. As a preferred embodiment of this application, this facilitates the use of a wrench to install the filter element frame onto the filter as a whole, or to remove the filter element frame.

[0010] Furthermore, in one type of candle filter element of this application, the bottom shape of the cavity is a spherical bowl shape with the center directly opposite the inner tube. As a preferred embodiment of this application, the bowl-shaped bottom design of the cavity effectively collects fluid, reduces dead zones, and improves the efficiency of fluid entering the inner tube. In addition, the lower sleeve is a shell component, meaning the bottom shape of the lower sleeve conforms to the bottom shape of the cavity. Due to its overall lightweight advantage, a separate support structure is not required at the bottom of the lower sleeve. This reduces structural complexity, and since the lower sleeve is entirely within the filter bag, there is no need for an opening at the bottom of the filter bag to extend the support structure. This reduces the need for clamps to lock and seal the filter bag and filter element frame at the lower end, lowering the risk of reduced filter bag filtration efficiency due to seal failure.

[0011] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model provides a candle filter element. Its principle is as follows: the connecting section is connected to the filter, the filter element body is immersed in the liquid to be filtered, and the filter draws in liquid under negative pressure at the connecting section. During this process, fluid enters the filter element skeleton from the filter bag. Through the filtration effect of the filter bag, impurities are trapped outside the filter bag, and the fluid continues to flow through the perforations into the cavity of the perforated tube. After being collected in the cavity, it is discharged upwards through the inner tube. In this application, the connecting section is integrated into the inner tube. Compared with the traditional separate connecting section and inner tube, this simplifies the connection structure of the corresponding flow channel, reduces the number of connection nodes in the flow channel components, lowers the risk of leakage, ensures filtration effectiveness, and extends service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a candle filter element in an embodiment of this application; Figure 2 This is a cross-sectional view of a candle filter element in an embodiment of this application; Figure 3 This is a three-dimensional structural diagram of the filter element skeleton in the embodiments of this application; Figure 4 This is an exploded view of the filter element skeleton components in the embodiments of this application (view 1); Figure 5 This is an exploded view of the filter element skeleton in the embodiment of this application (view 2).

[0013] In the diagram: 1-Filter element skeleton; 11-Inner tube; 111-Connecting section; 112-Wrench; 12-Perforated tube; 120-Perforation; 13-Lower sleeve; 130-Cavity; 14-Upper sleeve; 141-Annular limiting groove; 2-Filter bag; 21-Opening; 3-Clamping clamp. Detailed Implementation

[0014] Example

[0015] Combination Figures 1 to 5 The candle filter element shown includes: The filter element frame 1 includes an inner tube 11 and a set of perforated tubes 12 that are closed around the outer periphery of the inner tube 11. The sidewalls of the perforated tubes 12 are densely covered with perforations 120, and the sidewalls of adjacent pairs of perforated tubes 12 are in contact with each other. The filter element frame 1 also includes a lower sleeve 13 and an upper sleeve 14. The upper end of the lower sleeve 13 is open and covers the lower end of the set of perforated tubes 12. The lower sleeve 13 has a cavity 130 that communicates with the open end and connects the cavity of the perforated tubes 12 and the inner tube 11. The upper sleeve 14 covers the upper end of the set of perforated tubes 12. The inner tube 11 passes through the upper sleeve 14 and is fixed to the upper sleeve 14. The inner tube 11 that passes through the upper end of the upper sleeve 14 has a connecting section 111. Filter bag 2 is fitted outside the filter element frame 1 and below the corresponding connecting section 111.

[0016] Based on the above structure, the principle of a candle filter element is as follows: the connecting section 111 is connected to the filter via a thread, the filter element body is immersed in the liquid to be filtered, and the filter draws liquid under negative pressure at the connecting section 111. During this process, the fluid enters the filter element skeleton 1 from the filter bag 2. Through the filtration effect of the filter bag 2, impurities are trapped outside the filter bag 2, and the fluid continues to flow into the cavity of the perforated tube 12 through the perforation 120. After being collected in the cavity 130, it is discharged upward from the inner tube 11. In this application, the connecting section 111 is integrated into the inner tube 11. Compared with the traditional separate setting of the connecting section 111 and the inner tube 11, the connection structure of the corresponding flow channel is simplified, the risk of leakage is reduced, and the service life is improved.

[0017] Specifically, the upper sleeve 14 and the inner tube 11 are connected radially by welding.

[0018] In this embodiment, an annular limiting groove 141 is provided on the outer side of the upper cover 14, and an opening 21 is provided on the filter bag 2. One end of the filter bag 2 corresponding to the opening 21 is fitted onto the annular limiting groove 141. It also includes a clamp 3, which is fitted outside the upper cover 14 and tightens the connection between the filter bag 2 and the annular limiting groove 141.

[0019] The annular limiting groove 141 is used to limit the clamp 3, so that the clamp 3 tightens one end of the filter bag 2 corresponding to the opening 21 onto the annular limiting groove 141 to form a sealing structure, ensuring that the filter bag 2 is firmly connected, preventing filtrate leakage, and improving filtration efficiency.

[0020] In this embodiment, the lower cover 13 and the upper cover 14 are metal housing components.

[0021] The lower cover 13 and the upper cover 14 can be formed by stamping, which has the advantages of low manufacturing cost and lightweight.

[0022] In this embodiment, the open end of the lower sleeve 13 is welded to the lower side wall of a set of perforated tubes 12 to form a sealed connection, and the upper sleeve 14 is welded to the upper side wall of the perforated tubes 12 to form a sealed connection.

[0023] It can guarantee sealing performance and connection reliability.

[0024] In this embodiment, the lower end of the connecting segment 111 is provided with a lever 112 whose outer edge contour is polygonal.

[0025] This allows for easy installation of the filter element frame 1 onto the filter using a wrench, or removal of the filter element frame 1. Specifically, the wrench 112 is fitted onto the inner tube 11 and welded to the connecting section 111.

[0026] In this embodiment, the bottom of the cavity 130 is shaped like a spherical bowl with its center directly opposite the inner tube 11.

[0027] The bowl-shaped bottom design of cavity 130 effectively collects fluid, reduces dead zones, and improves the efficiency of fluid entering the inner tube 11. Furthermore, the lower sleeve 13 is a shell component, meaning its bottom shape matches the bottom shape of cavity 130. Due to its overall lightweight nature, a separate support structure is not required at the bottom of the lower sleeve 13. This reduces structural complexity. Moreover, since the lower sleeve 13 is entirely within the filter bag 2, there is no need for an opening at the bottom of the filter bag 2 to extend the support structure. This reduces the need for clamps to lock and seal the filter bag 2 and filter element frame 1 at the lower end, lowering the risk of reduced filtration efficiency due to seal failure.

[0028] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A candle filter element, characterized in that: include: The filter element frame (1) includes an inner tube (11) and a set of perforated tubes (12) that are closed around the outer periphery of the inner tube (11). The sidewalls of the perforated tubes (12) are densely covered with perforations (120). The filter element frame (1) also includes a lower sleeve (13) and an upper sleeve (14). The upper end of the lower sleeve (13) is open, and the open end of the lower sleeve (13) covers the lower end of the set of perforated tubes (12). The lower sleeve (13) has a cavity (130) that communicates with the open end. The cavity (130) connects the perforated tubes (12) and the lumen of the inner tube (11). The upper sleeve (14) covers the upper end of the set of perforated tubes (12). The inner tube (11) passes through the upper sleeve (14) and is fixed to the upper sleeve (14). A connecting section (111) is provided on the inner tube (11) that passes through the upper end of the upper sleeve (14).

2. The candle filter element according to claim 1, characterized in that: It also includes a filter bag (2), which is fitted under the corresponding connecting section (111) outside the filter element skeleton (1).

3. The candle filter element according to claim 2, characterized in that: The upper cover (14) is provided with an annular limiting groove (141) on the outside, and the filter bag (2) is provided with an opening (21). One end of the filter bag (2) corresponding to the opening (21) is fitted onto the annular limiting groove (141). It also includes a clamp (3), which is fitted outside the upper cover (14) to tighten the connection between the filter bag (2) and the annular limiting groove (141).

4. A candle filter element according to claim 1, characterized in that: The lower cover (13) and upper cover (14) are metal housing components.

5. A candle filter element according to claim 1, characterized in that: The open end of the lower sleeve (13) is welded to the lower side wall of a set of perforated tubes (12), and the upper sleeve (14) is welded to the upper side wall of the perforated tubes (12).

6. A candle filter element according to claim 1, characterized in that: The lower end of the connecting section (111) is provided with a lever (112) with a polygonal outer edge.

7. A candle filter element according to claim 1 or 4, characterized in that: The bottom of the cavity (130) is shaped like a spherical bowl with its center facing the inner tube (11).

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