Filter element of filter

Abstract

The utility model discloses a filter element of a filter, which relates to the field of water treatment of a power plant, and comprises a support component, an end support piece, a plugging piece arranged on one side of the end support piece, and a framework support piece arranged between the end support pieces, and the filtering assembly comprises an outer filtering layer arranged outside the framework supporting piece and an inner filtering layer arranged inside the framework supporting piece, a double-layer filtering structure is formed through matched use of the supporting assembly and the filtering assembly, the large pollutant containing amount can be guaranteed, and the requirements for high filtering precision and high filtering efficiency can be met.

Description

Technical Field

[0001] This utility model relates to the field of power plant water treatment technology, and in particular to a filter element. Background Technology

[0002] In power plant water treatment, two types of backwashable filter elements are commonly used. The first is the wound filter element, which is a filter element precisely wound with high-performance fiber yarn onto a porous frame. The yarn material includes polypropylene fiber, acrylic fiber, and degreased cotton fiber. Different precision filter elements are made by controlling the tightness and density of the winding during the process. However, during use, fibers can shed from the wound yarn onto the porous frame, causing secondary pollution to the water. Wound filter elements have a high dirt-holding capacity under coarse filtration conditions. For high filtration precision and large dirt-holding capacity conditions, they need to be used in conjunction with powdered resin and fiber powder membranes, which presents the problem of leakage of powdered resin and fiber powder or high levels of leached substances that pollute the water.

[0003] Pleated filter elements use polypropylene meltblown fiber membranes, nylon membranes, or polytetrafluoroethylene microporous membranes as filter media. The filter media is folded into a pleated shape using a filter element folding machine, and then assembled with end caps, inner supports, outer supports, and seals to form a filter assembly. Different precision filter elements can be manufactured by selecting filter media of different materials and precisions. When pleated filter elements are used in liquid filtration backwash filters, backwashing only removes impurities trapped on the surface of the filter media; impurities inside the filter media remain, resulting in incomplete backwashing and poor backwashing effect. During the subsequent operating cycle of the backwash filter, the pressure differential rises rapidly, and the frequency of backwashing increases, leading to a premature end to the lifespan of the pleated filter element and higher operating costs. For applications requiring high precision and high contaminant content, pleated filter elements, even with high-precision filter media, can only meet the precision requirements but cannot meet the requirements for large contaminant holding capacity. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is how to solve the problem that existing filter elements cannot simultaneously meet the requirements of high filtration accuracy and large dirt holding capacity.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a filter element, comprising a support assembly including an end support member, a sealing member disposed on one side of the end support member, and a skeleton support member disposed between the end support members; and a filter assembly including an outer filter layer disposed outside the skeleton support member and an inner filter layer disposed inside the skeleton support member.

[0007] In a preferred embodiment of the filter element of this utility model, the end support includes an inner support frame and a second retaining ring with a gap between them, and a first retaining ring is also fixedly provided at the end of the inner support frame.

[0008] In a preferred embodiment of the filter element of this utility model, the sealing member includes a plug, a screw, and a nut disposed on one side of the second retaining ring. One end of the screw is threadedly engaged with the plug, and the nut is disposed on the side of the second retaining ring away from the plug.

[0009] In a preferred embodiment of the filter element of this utility model, the skeleton support includes a porous outer skeleton and a porous inner skeleton disposed between the first retaining ring and the second retaining ring, wherein the porous outer skeleton is disposed outside the porous inner skeleton and there is a receiving space between the two.

[0010] In a preferred embodiment of the filter element of this utility model, the outer filter layer is disposed outside the porous outer skeleton and covers it, and the inner filter layer is disposed within the accommodating space.

[0011] In a preferred embodiment of the filter element of this utility model, the inner filter layer is further provided with end caps at both ends, and the inner filter layer can be spliced ​​together through the end caps.

[0012] In a preferred embodiment of the filter element of this utility model, a sealing gasket is provided between the end cap and the first retaining ring and the second retaining ring respectively.

[0013] In a preferred embodiment of the filter element of this utility model, the outer filter layer is made of fiber yarn and has a honeycomb structure.

[0014] As a preferred embodiment of the filter element of this utility model, the inner filter layer is a folded filter layer, and the material is a polypropylene meltblown fiber filter membrane, a nylon filter membrane, or a polytetrafluoroethylene microporous filter membrane. The skeleton support and the end cap are made of polypropylene.

[0015] This utility model also provides the following technical solution: a filter includes a filter element.

[0016] The beneficial effects of this utility model are as follows: by using the support component and the filter component together, a double-layer filter structure is formed, which can not only ensure a large dirt holding capacity, but also meet the requirements of high filtration accuracy and high filtration efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall filter element.

[0019] Figure 2 This is a schematic diagram of the supporting components.

[0020] Figure 3 This is a schematic diagram of the inner filter layer. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0024] Example 1

[0025] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a support component 100, which includes an end support member 101 and a skeleton support member 103 disposed between the end support members 101.

[0026] Specifically, the end support 101 includes an inner support frame 101a and a second retaining ring 101b with a gap between it and the inner support frame 101a. A first retaining ring 101c is also fixedly disposed at the end of the inner support frame 101a. The first retaining ring 101c and the second retaining ring 101b are respectively sleeved on both ends of the support frame 101a. A threaded interface is provided at the end of the support frame 101a near the first retaining ring 101c for connection to other components.

[0027] The frame support 103 includes a porous outer frame 103a and a porous inner frame 103b disposed between the first retaining ring 101c and the second retaining ring 101b. The porous outer frame 103a is disposed outside the porous inner frame 103b, and there is a space between the two. The porous outer frame 103a is uniformly provided with through holes to facilitate water drainage. The porous inner frame 103b has the same hole diameter as the inner support frame 101a.

[0028] Preferably, the skeleton support 103 is made of polypropylene.

[0029] When the filter is in use, the incoming water first passes through the porous outer frame 103a and enters the filter interior, and then passes through the porous inner frame 103b for water discharge treatment.

[0030] In summary, the support component 100 provides a working space for the filter component 200, making the filter more stable and more efficient.

[0031] Example 2

[0032] Reference Figure 1 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a sealing member 102 for the support component 100, which solves the problem of poor filter sealing.

[0033] Specifically, the sealing member 102 is disposed on one side of the end support member 101. The sealing member 102 includes a plug 102a, a screw 102b and a nut 102c disposed on one side of the second retaining ring 101b. One end of the screw 102b is threadedly engaged with the plug 102a, and the nut 102c is disposed on the side of the second retaining ring 101b away from the plug 102a.

[0034] Furthermore, the sealing component 102 also includes a gasket 102d, which is fitted onto the screw 102b and closely abuts one side of the second retaining ring 101b. The screw 102b passes through the nut 102c, the gasket 102d, and the second retaining ring 101b and is inserted into the plug 102a, thereby improving the overall sealing performance of the filter.

[0035] In use, insert the screw 102b into the plug 102a, then put the washer 102d on the screw 102b so that the washer 102d fits against the outer wall of the second retaining ring 101b. Next, screw the nut 102c into the screw 102b and place it outside the washer 102d. Continuously tighten the nut 102c so that the nut 102c presses the washer 102d and the second retaining ring 101b together.

[0036] In summary, the sealing component 102 improves the sealing effect and filtration efficiency of the filter.

[0037] Example 3

[0038] Reference Figure 1 and Figure 3 This is the third embodiment of the present invention, which is based on the previous embodiment.

[0039] Specifically, it also includes a filter assembly 200, which includes an outer filter layer 201 disposed outside the skeleton support member 103 and an inner filter layer 202 disposed inside the skeleton support member 103.

[0040] Furthermore, the outer filter layer 201 is disposed on the outside of the porous outer skeleton 103a and covers it, while the inner filter layer 202 is disposed within the accommodating space.

[0041] The inner filter layer 202 is also provided with end caps 202a at both ends, and the inner filter layer 202 can be spliced ​​through the end caps 202a.

[0042] Sealing gaskets 202b are respectively provided between the end cap 202a and the first retaining ring 101c and the second retaining ring 101b. The end cap 202a is hot-melt welded to both ends of the porous outer frame 103a, and the inner filter layer 202 can be spliced ​​to the required length by hot-melt welding of the end cap 202a according to actual needs.

[0043] End caps 202a are hot-melt welded to both ends of the porous outer frame 103a, and the inner filter layer 202 can be spliced ​​to the required length by hot-melt welding of end caps 202a according to actual needs.

[0044] Preferably, the outer filter layer 201 is made of fiber yarn, which is spirally wound and has a honeycomb structure with a loose outer layer and a dense inner layer, which can intercept large-diameter impurities.

[0045] Preferably, the inner filter layer 202 is a pleated filter layer made of polypropylene meltblown fiber filter membrane, nylon filter membrane, or polytetrafluoroethylene microporous filter membrane, which is pleated into a pleated shape by a filter element pleating machine. During use, it can ensure that no fiber is shed, no harmful substances are released, and no secondary pollution is caused, and it can also intercept fibers shed from the outer filter layer 201.

[0046] Preferably, the end cap 202a is made of polypropylene.

[0047] Preferably, all materials of the outer filter layer 201 and the inner filter layer 202 are made of high-temperature resistant materials, which can be used for iron removal in condensate at room temperature, as well as for iron removal in hot water networks at high temperature.

[0048] It should be noted that this filter element can be used with a membrane in powder-covered filters of air-cooled unit fine treatment systems, or without a membrane in tubular filters of wet-cooled units. It can also be used in backwash filters, as it combines the advantages of good backwashing performance of the outer filter layer 201 with the high precision of the inner filter layer 202. When used in powder-covered filters, the outer filter layer 201 serves as the base layer for the powder resin coating on its surface, while the inner filter layer 202 intercepts the powder resin that penetrates through the outer filter layer 201.

[0049] In operation, when the filter treats incoming water, the water first comes into contact with the outer filter layer 201. After passing through the winding filter layer, large-particle impurities are intercepted. Then, it enters the inner filter layer 202 through the through-holes of the porous outer skeleton 103a for secondary filtration. Small-particle impurities are intercepted by the high-precision screening of the inner filter layer 202, resulting in treated water. The outer filter layer 201 and the inner filter layer 202 work separately to form a dual-layer filtration structure, which can ensure high throughput and large dirt holding capacity, while also meeting the requirements of high filtration accuracy and high filtration efficiency. This allows a single filter to replace the traditional two-stage filtration (coarse filtration + fine filtration), making it more economical and practical.

[0050] In summary, the use of filter element 200 solves the problem that existing filter elements cannot simultaneously meet the requirements of high filtration accuracy and large dirt holding capacity, forming a dual-layer filtration structure that meets the requirements of high filtration throughput, high accuracy, large dirt holding capacity and low cost.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A filter element, characterized in that: include, The support assembly (100) includes an end support (101), a sealing member (102) disposed on one side of the end support (101), and a skeleton support (103) disposed between the end supports (101); and, The filter assembly (200) includes an outer filter layer (201) disposed outside the skeleton support (103) and an inner filter layer (202) disposed inside the skeleton support (103).

2. The filter element as described in claim 1, characterized in that: The end support (101) includes an inner support frame (101a) and a second retaining ring (101b) with a gap between it and the inner support frame (101a). The end of the inner support frame (101a) is also fixedly provided with a first retaining ring (101c).

3. The filter element as described in claim 2, characterized in that: The sealing component (102) includes a plug (102a), a screw (102b), and a nut (102c) disposed on one side of the second retaining ring (101b). One end of the screw (102b) is threadedly engaged with the plug (102a), and the nut (102c) is disposed on the side of the second retaining ring (101b) away from the plug (102a).

4. The filter element as described in claim 3, characterized in that: The skeleton support (103) includes a porous outer skeleton (103a) and a porous inner skeleton (103b) disposed between the first retaining ring (101c) and the second retaining ring (101b). The porous outer skeleton (103a) is disposed outside the porous inner skeleton (103b) and there is a receiving space between the two.

5. The filter element as described in claim 4, characterized in that: The outer filter layer (201) is disposed on the outside of the porous outer skeleton (103a) and covers it, while the inner filter layer (202) is disposed within the accommodating space.

6. The filter element as described in claim 5, characterized in that: The inner filter layer (202) is also provided with end caps (202a) at both ends, and the inner filter layer (202) can be spliced ​​through the end caps (202a).

7. The filter element as described in claim 6, characterized in that: A sealing gasket (202b) is provided between the end cap (202a) and the first retaining ring (101c) and the second retaining ring (101b).

8. The filter element as described in claim 7, characterized in that: The outer filter layer (201) is made of fiber yarn and has a honeycomb structure.

9. The filter element as described in claim 8, characterized in that: The inner filter layer (202) is a folded filter layer, and the material is a polypropylene meltblown fiber filter membrane, a nylon filter membrane, or a polytetrafluoroethylene microporous filter membrane. The skeleton support (103) and the end cap (202a) are made of polypropylene.

10. A filter, characterized in that: Includes the filter element as described in any one of claims 1 to 9.

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