High-pressure plastic filter element for solid-liquid separation

Abstract

The utility model discloses a high-pressure plastic filter element for solid-liquid separation, which comprises an upper cover and a lower cover, a second filter screen is fixedly mounted between the upper cover and the lower cover, a first filter screen is sleeved outside the second filter screen, the first filter screen is fixedly mounted between the outer surface of the lower end of the upper cover and the outer surface of the upper end of the lower cover, and the second filter screen is sleeved outside the first filter screen. A backwashing water injection pipe is fixedly mounted in the middle of the outer surface of the upper end of the upper cover, blow-off pipes are fixedly mounted on the left side and the right side of the outer surface of the lower end of the lower cover, a valve is mounted at one end of each blow-off pipe, and a drain valve is fixedly mounted in the middle of the outer surface of the lower end of the lower cover. According to the high-pressure plastic filter element for solid-liquid separation disclosed by the utility model, the collapse of the filter element under high pressure is avoided by virtue of the gradient design of the large aperture of the outer layer and the small aperture of the inner layer in combination with the supporting framework, the filter element is conveniently backwashed by virtue of the backwash water injection pipe, and impurities in the interlayer are discharged through the blow-off pipe.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, specifically to a high-pressure plastic filter element for solid-liquid separation. Background Technology

[0002] Solid-liquid separation technology has wide applications in industrial production, wastewater treatment and other fields. Among them, the filter element is the core component, and its performance directly affects the separation effect and equipment life.

[0003] The filter cartridges in the existing technology have the following disadvantages:

[0004] 1. Insufficient structural strength: Single-layer filter screens or designs lacking a supporting frame are unable to withstand high-pressure environments, which can easily lead to filter element collapse or deformation;

[0005] 2. It is not easy to clean and the filter element needs to be disassembled for cleaning.

[0006] Therefore, we propose a high-pressure plastic filter element for solid-liquid separation. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides a high-pressure plastic filter element for solid-liquid separation. The gradient design of the outer layer with a large pore size and the inner layer with a small pore size, combined with a support frame, prevents the filter element from collapsing under high pressure and has the advantages of backwashing function and extended service life. It can effectively solve the problems in the background technology.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-pressure plastic filter element for solid-liquid separation, comprising an upper cover and a lower cover, a second filter screen fixedly installed between the upper cover and the lower cover, a first filter screen sleeved on the outside of the second filter screen, the first filter screen fixedly installed between the lower outer surface of the upper cover and the upper outer surface of the lower cover, a backwash water injection pipe fixedly installed in the middle of the upper outer surface of the upper cover, drain pipes fixedly installed on the left and right sides of the lower outer surface of the lower cover, a valve installed at one end of the drain pipe, a drain valve fixedly installed in the middle of the lower outer surface of the lower cover, a first support ring fixedly installed between the outer wall of the second filter screen and the inner wall of the first filter screen, and a second support ring fixedly installed on the inner wall of the second filter screen.

[0011] Preferably, an annular seat is fixedly installed on the lower outer surface of the lower cover.

[0012] Preferably, the lower end of the backwash water injection pipe extends into the upper part of the inner cavity of the second filter screen, and the upper end of the drain valve extends into the lower part of the inner cavity of the second filter screen.

[0013] Preferably, the upper end of the drain pipe extends to the bottom of the interlayer between the outer wall of the second filter screen and the inner wall of the first filter screen, and the drain pipe passes through the annular seat.

[0014] Preferably, the upper outer surface of the second support ring is provided with second weight-reducing holes at equal intervals.

[0015] Preferably, the upper outer surface of the first support ring is provided with first weight-reducing holes at equal intervals, and the outer wall of the first support ring is provided with a slag discharge groove.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a high-pressure plastic filter element for solid-liquid separation, which has the following beneficial effects:

[0018] 1. This high-pressure plastic filter element for solid-liquid separation adopts a gradient structure of large-pore outer layer (first filter screen) and small-pore inner layer (second filter screen) to achieve staged filtration, avoid filter screen clogging, and improve filtration accuracy and efficiency.

[0019] 2. This high-pressure plastic filter element for solid-liquid separation significantly enhances the structural strength of the filter element through the dual reinforcement design of the first support ring and the second support ring, ensuring that it can maintain a stable shape under high pressure, preventing the filter screen from collapsing or deforming, and extending its service life.

[0020] 3. This high-pressure plastic filter element for solid-liquid separation is equipped with a backwash water injection pipe, which can directly inject flushing liquid into the filter element. Combined with the valve control of the drain pipe, backwashing is achieved. Impurities in the interlayer are quickly discharged through the slag discharge trough and the drain pipe, avoiding residue and significantly improving the cleaning effect and maintenance convenience.

[0021] 4. This high-pressure plastic filter element for solid-liquid separation features weight-reducing holes in the first and second support rings, reducing weight while maintaining strength. The optimized slag discharge path in the slag outlet further ensures thorough removal of impurities during backwashing, reducing the risk of clogging. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a high-pressure plastic filter element for solid-liquid separation according to the present invention.

[0023] Figure 2 This is a side cross-sectional view of a high-pressure plastic filter element for solid-liquid separation according to the present invention.

[0024] Figure 3 This is a top view of the first support ring in a high-pressure plastic filter element for solid-liquid separation according to the present invention.

[0025] Figure 4This is a top view of the second support ring in a high-pressure plastic filter element for solid-liquid separation according to the present invention.

[0026] In the diagram: 1. Upper cover; 2. Lower cover; 3. Annular seat; 4. Drain valve; 5. Sewage pipe; 6. Valve; 7. Backwash water injection pipe; 8. First filter screen; 9. Second filter screen; 10. First support ring; 11. Second support ring; 12. First weight reduction hole; 13. Slag discharge trough; 14. Second weight reduction hole. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] This embodiment is a high-pressure plastic filter element for solid-liquid separation.

[0029] like Figure 1-4 As shown, the device includes an upper cover 1 and a lower cover 2. A second filter screen 9 is fixedly installed between the upper cover 1 and the lower cover 2. A first filter screen 8 is sleeved on the outside of the second filter screen 9. The first filter screen 8 is fixedly installed between the lower outer surface of the upper cover 1 and the upper outer surface of the lower cover 2. A backwash water injection pipe 7 is fixedly installed in the middle of the upper outer surface of the upper cover 1. Drain pipes 5 are fixedly installed on the left and right sides of the lower outer surface of the lower cover 2. A valve 6 is installed at one end of the drain pipe 5. A drain valve 4 is fixedly installed in the middle of the lower outer surface of the lower cover 2. A first support ring 10 is fixedly installed between the outer wall of the second filter screen 9 and the inner wall of the first filter screen 8. A second support ring 11 is fixedly installed on the inner wall of the second filter screen 9.

[0030] An annular seat 3 is fixedly installed on the lower outer surface of the lower cover 2; the lower end of the backwash water injection pipe 7 extends into the upper part of the inner cavity of the second filter screen 9, and the upper end of the drain valve 4 extends into the lower part of the inner cavity of the second filter screen 9; the upper end of the sewage pipe 5 extends into the bottom of the interlayer between the outer wall of the second filter screen 9 and the inner wall of the first filter screen 8, and the sewage pipe 5 passes through the annular seat 3; the upper outer surface of the second support ring 11 is provided with second weight reduction holes 14 at equal intervals; the upper outer surface of the first support ring 10 is provided with first weight reduction holes 12 at equal intervals, and the outer wall of the first support ring 10 is provided with a slag discharge groove 13.

[0031] It should be noted that this utility model is a high-pressure plastic filter element for solid-liquid separation. During filtration, external liquid enters the interior through the first filter screen 8 and the second filter screen 9. The first filter screen 8 adopts a large-pore filter screen, and the second filter screen 9 adopts a small-pore filter screen with a gradient design of large pores on the outer layer and small pores on the inner layer. Combined with the support frame, it prevents the filter element from collapsing under high pressure. The first support ring 10 and the second support ring 11 are also provided to prevent the filter element from collapsing under high pressure. Weight reduction holes are provided on both the second support ring 11 and the first support ring 10. During backwashing, it is prevented that impurities between the second filter screen 9 and the first filter screen 8 will remain on the first support ring 10. A slag discharge groove 13 is provided on the outer ring of the first support ring 10 to facilitate better slag discharge. During rinsing, the backwash water injection pipe 7 is supplied by an external water pump to inject backwash liquid into the interior of the second filter screen 9. After the liquid passes through the second filter screen 9, it backwashes the first filter screen 8. The impurities in the interlayer are discharged through the drain pipe 5.

[0032] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-pressure plastic filter element for solid-liquid separation, comprising an upper cover (1) and a lower cover (2), characterized in that: A second filter screen (9) is fixedly installed between the upper cover (1) and the lower cover (2). A first filter screen (8) is sleeved on the outside of the second filter screen (9). The first filter screen (8) is fixedly installed between the lower outer surface of the upper cover (1) and the upper outer surface of the lower cover (2). A backwash water injection pipe (7) is fixedly installed in the middle of the upper outer surface of the upper cover (1). A drain pipe (5) is fixedly installed on the left and right sides of the lower outer surface of the lower cover (2). A valve (6) is installed at one end of the drain pipe (5). A drain valve (4) is fixedly installed in the middle of the lower outer surface of the lower cover (2). A first support ring (10) is fixedly installed between the outer wall of the second filter screen (9) and the inner wall of the first filter screen (8). A second support ring (11) is fixedly installed on the inner wall of the second filter screen (9).

2. The high-pressure plastic filter element for solid-liquid separation according to claim 1, characterized in that: An annular seat (3) is fixedly installed on the lower outer surface of the lower cover (2).

3. The high-pressure plastic filter element for solid-liquid separation according to claim 2, characterized in that: The lower end of the backwash water injection pipe (7) extends into the upper part of the inner cavity of the second filter screen (9), and the upper end of the drain valve (4) extends into the lower part of the inner cavity of the second filter screen (9).

4. The high-pressure plastic filter element for solid-liquid separation according to claim 3, characterized in that: The upper end of the drain pipe (5) extends into the bottom of the interlayer between the outer wall of the second filter screen (9) and the inner wall of the first filter screen (8), and the drain pipe (5) passes through the annular seat (3).

5. A high-pressure plastic filter element for solid-liquid separation according to claim 4, characterized in that: The upper outer surface of the second support ring (11) is provided with second weight-reducing holes (14) at equal intervals.

6. A high-pressure plastic filter element for solid-liquid separation according to claim 5, characterized in that: The upper outer surface of the first support ring (10) is provided with first weight reduction holes (12) at equal intervals, and the outer wall of the first support ring (10) is provided with slag discharge groove (13).

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