A steel lined plastic basket filter

Abstract

The utility model relates to filter technical field, and disclose a kind of steel lining plastic basket filter, including filter main part and filter core, the two sides of filter main part are equipped with water inlet and water outlet respectively, the filter core is set in filter main part, the inner wall of filter main part is equipped with the placement ring for supporting filter core, the material quality of filter core is steel lining plastic material quality, the top of filter core is equipped with the positioning ring matched with placement ring, compared with metal basket filter, the filter core of this kind of steel lining plastic basket filter adopts the material quality of steel lining plastic, with can resist strong acid, strong base, organic solvent etc. Most chemical medium, almost not be dissolved by any solvent, suitable for strong corrosion environment, not easy to deform under high temperature, low temperature environment still keep good toughness, maintenance cost is lower, excellent surface performance inner wall friction coefficient is low, medium flow resistance is small, and with not adhere, anti-pollution characteristics, suitable for high-purity medium conveying.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically a steel-lined plastic basket filter. Background Technology

[0002] The filter plays a filtering role in the pipeline. When liquid enters the filter basket from left to right through the main pipe, solid impurity particles are blocked in the filter basket, while clean fluid passes through the filter basket and is discharged from the filter outlet.

[0003] Steel-lined plastic is a type of storage container that uses steel as its outer shell and plastic as its inner lining. This lining material is typically made of polyethylene, polypropylene, or polyvinyl chloride, which are corrosion-resistant, high-temperature resistant, and wear-resistant, effectively protecting the safety and stability of stored substances.

[0004] Currently, existing metal filter cartridges / baskets have high replacement costs, and since many filters are also used to filter chemical liquids, even stainless steel ones are at risk of rusting and corrosion. Therefore, they do not meet the current needs. To address this, we have proposed a steel-lined plastic basket filter. Utility Model Content

[0005] This utility model provides a steel-lined plastic basket filter, which has the advantages of low operating cost, simple structure and wide applicability, and solves the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a steel-lined plastic basket filter, comprising a filter body and a filter element. The filter body has an inlet and an outlet on both sides, respectively. The filter element is disposed inside the filter body. The inner wall of the filter body has a placement ring for supporting the filter element. The filter element is made of steel-lined plastic. The top of the filter element has a positioning ring that cooperates with the placement ring. The upper and lower ends of the filter body are respectively provided with an upper cover plate and a lower cover plate. A cavity is reserved between the bottom of the filter element and the lower cover plate. The filter element has a handle with an inverted U-shaped structure. The upper cover plate presses the filter element in place by the handle.

[0007] As an optional solution for the steel-lined plastic basket filter of this utility model, the placement ring and the positioning ring are both inclined and cooperate with each other, and the bottom of the upper cover plate abuts against the top of the handle to press the positioning ring of the filter element onto the placement ring.

[0008] As an alternative solution for the steel-lined plastic basket filter described in this utility model, the upper cover plate is provided with a handle for hand-held lifting, and the upper cover plate and the filter body are connected by a flange structure.

[0009] As an alternative solution for the steel-lined plastic basket filter described in this utility model, the bottom of the handle is provided with a fixing nut that penetrates the side wall of the filter element, and the fixing nut fixes the handle to the filter element by fixing bolts.

[0010] As an alternative solution for the steel-lined plastic basket filter described in this utility model, the upper cover plate is provided with a discharge port cover plate, and the upper cover plate and the lower cover plate cooperate to seal the upper and lower ends of the filter body.

[0011] As an alternative to the steel-lined plastic basket filter described in this utility model, the diameter of the filter element is smaller than the inner wall diameter of the filter body, and the top of the filter element is inclined.

[0012] As an optional solution for the steel-lined plastic basket filter described in this utility model, the wall of the filter element facing the outlet exceeds the highest water inlet line of the outlet, and the wall of the filter element facing the inlet is lower than the lowest water inlet line of the inlet.

[0013] This utility model has the following beneficial effects: 1. In this type of steel-lined plastic basket filter, the filter element is abutted against the positioning ring of the filter body by the upper cover plate. The filter element can be firmly fixed in the filter body without additional fixing. Therefore, during maintenance and replacement, the filter element can be directly removed by opening the upper cover plate. After removal, the filter element can be assembled and replaced without positioning and adjustment. It can be directly placed and pressed by the upper cover plate, so that it can be matched and positioned by the inclined placement ring and the positioning ring for quick replacement and installation.

[0014] 2. Compared with metal basket filters, this type of steel-lined plastic basket filter uses a steel-lined plastic filter element, which can resist most chemical media such as strong acids, strong alkalis, and organic solvents. It is almost not dissolved by any solvent, making it suitable for highly corrosive environments. Moreover, it has a wide temperature range with a long-term stable operating temperature of -50℃ to 150℃. It is not easily deformed at high temperatures and maintains good toughness in low-temperature environments, resulting in lower maintenance costs and a longer service life. Due to its strong corrosion resistance, its service life is significantly longer than that of metal filters, reducing the frequency of replacement and resulting in lower overall long-term costs. It also has excellent surface properties, with a low coefficient of friction on the inner wall, low resistance to media flow, and non-adhesive and anti-contamination characteristics, making it suitable for transporting high-purity media. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a steel-lined plastic basket filter according to the present invention; Figure 2 This is a half-sectional structural diagram of a steel-lined plastic basket filter according to the present invention. Figure 3This is a three-dimensional structural diagram of the filter element of this utility model; Figure 4 This is a three-dimensional structural diagram of the top cover plate of this utility model.

[0016] In the diagram: 1. Discharge port cover; 2. Upper cover; 3. Filter element; 4. Fixing bolt; 5. Handle; 6. Fixing nut; 7. Filter body; 8. Lower cover; 9. Placement ring; 70. Inlet; 71. Outlet; 72. Positioning ring; 73. Cavity; 74. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: This example is intended to facilitate the resolution of the problem. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 A steel-lined plastic basket filter includes a filter body 7 and a filter element 3. The filter body 7 has an inlet 70 and an outlet 71 on both sides. The filter element 3 is disposed inside the filter body 7. The inner wall of the filter body 7 has a placement ring 9 for supporting the filter element 3. The filter element 3 is made of steel-lined plastic. The upper and lower ends of the filter body 7 are respectively provided with an upper cover plate 2 and a lower cover plate 8. A cavity 73 is reserved between the bottom of the filter element 3 and the lower cover plate 8. The upper cover plate 2 and the lower cover plate 8 cooperate to seal the upper and lower ends of the filter body 7. The upper cover plate 2 is provided with a discharge port cover plate 1. The diameter of the filter element 3 is smaller than the inner wall diameter of the filter body 7. The top of the filter element 3 is inclined. The wall of the filter element 3 facing the outlet 71 exceeds the highest water filling line of the outlet 71, and the wall of the filter element 3 facing the inlet 70 is lower than the lowest water filling line of the inlet 70.

[0019] In this embodiment, filter element 3 is made of steel lined with plastic, with an inner lining of polytetrafluoroethylene (PTFE). It possesses excellent corrosion resistance, resisting most chemical media such as strong acids, strong alkalis, and organic solvents. It is virtually insoluble in any solvent, making it suitable for highly corrosive environments. Furthermore, it has a wide temperature range, with a long-term stable operating temperature from -60℃ to 250℃. It is not easily deformed at high temperatures and maintains good toughness in low-temperature environments. Compared to existing metal basket filters, it has lower maintenance costs, and due to its superior corrosion resistance, its service life is significantly longer than that of metal filters, reducing replacement frequency and resulting in lower overall long-term costs. The working principle of this utility model is as follows: Fluid enters the filter body 7 through the inlet 70. The filter element 3 inside the filter body 7 adopts a suspended design, rather than being attached to the filter body 7. Furthermore, the side of the filter element 3 facing the inlet 70 has an open and unobstructed design, which allows the inlet 70 to accept a larger flow rate. When the fluid enters the filter element 3, impurities in the fluid are blocked inside the filter element 3, while the clean fluid enters the cavity 73 through the filter element 3 and is discharged from the outlet 71 after passing through the cavity 73. When the filter element 3 needs to be cleaned and maintained, the top cover 2 can be removed to take out the filter element 3, and it can be reinstalled after cleaning. Therefore, it is extremely convenient to use and maintain.

[0020] Example 2: This example aims to further address the problem. It is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 2 , Figure 3 , Figure 4 The upper cover plate 2 is provided with a handle 74 for holding and lifting. The upper cover plate 2 and the filter body 7 are connected by a flange structure. The top of the filter element 3 is provided with a positioning ring 72 that cooperates with the placement ring 9. The filter element 3 is provided with a handle 5 in the shape of an inverted U. The bottom of the handle 5 is provided with a fixing nut 6 that penetrates the side wall of the filter element 3. The fixing nut 6 is fixed to the filter element 3 by fixing bolts 4. The upper cover plate 2 presses the filter element 3 with the handle 5. The placement ring 9 and the positioning ring 72 are both set at an angle and cooperate with each other. The bottom of the upper cover plate 2 abuts against the top of the handle 5 to press the positioning ring 72 of the filter element 3 onto the placement ring 9.

[0021] In this embodiment: the handle 74 can lift the top cover 2. When taking out the filter element 3, the top cover 2 can be unlocked and removed, and the filter element 3 can be taken out directly through the handle 5. When installing the filter element 3, its inclined placement ring 9 will automatically rotate after being subjected to pressure to match the positioning ring 72 on the filter body 7, thereby simplifying the assembly steps and making the installation more convenient.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A steel-lined plastic basket filter, comprising a filter body (7) and a filter element (3), wherein the filter body (7) is provided with an inlet (70) and an outlet (71) on both sides, and the filter element (3) is disposed inside the filter body (7), characterized in that: The inner wall of the filter body (7) is provided with a placement ring (9) for supporting the filter element (3). The filter element (3) is made of steel lined with plastic. The top of the filter element (3) is provided with a positioning ring (72) that cooperates with the placement ring (9). The filter body (7) is provided with an upper cover plate (2) and a lower cover plate (8) at its upper and lower ends respectively. A cavity (73) is reserved between the bottom of the filter element (3) and the lower cover plate (8). The filter element (3) is provided with a handle (5) in the shape of an inverted U. The upper cover plate (2) presses the filter element (3) in place by the handle (5).

2. A steel-lined plastic basket filter according to claim 1, characterized in that: The placement ring (9) and the positioning ring (72) are both inclined and cooperate with each other. The bottom of the upper cover plate (2) abuts against the top of the handle (5) to press the positioning ring (72) of the filter element (3) onto the placement ring (9).

3. A steel-lined plastic basket filter according to claim 2, characterized in that: The upper cover plate (2) is provided with a handle (74) for holding and lifting, and the upper cover plate (2) is connected to the filter body (7) by a flange structure.

4. A steel-lined plastic basket filter according to claim 2, characterized in that: The bottom of the handle (5) is provided with a fixing nut (6) that penetrates the side wall of the filter element (3). The fixing nut (6) fixes the handle (5) to the filter element (3) by fixing bolts (4).

5. A steel-lined plastic basket filter according to claim 1, characterized in that: The upper cover plate (2) is provided with a discharge port cover plate (1), and the upper cover plate (2) and the lower cover plate (8) cooperate to seal the upper and lower ends of the filter body (7).

6. A steel-lined plastic basket filter according to claim 1, characterized in that: The diameter of the filter element (3) is smaller than the inner wall diameter of the filter body (7), and the top of the filter element (3) is inclined.

7. A steel-lined plastic basket filter according to claim 6, characterized in that: The wall of the filter element (3) facing the outlet (71) exceeds the highest water injection line of the outlet (71), and the wall of the filter element (3) facing the inlet (70) is lower than the lowest water injection line of the inlet (70).

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