A backwashable filter disc structure

Abstract

This utility model discloses a backwashable filter disc structure, relating to the field of filter disc technology. The utility model includes an outer fixing sleeve, a first mounting ring, a second mounting ring, and a filter assembly. The second mounting ring is fixed to the top of the outer fixing sleeve, and the first mounting ring is fixed to the bottom of the outer fixing sleeve. Both the first and second mounting rings have vertically penetrating mounting holes arranged in a circular array. The filter assembly is fixed to the middle of the inner wall of the outer fixing sleeve, and reinforcing rings are provided at both the top and bottom of the filter assembly. This utility model, by setting up the outer fixing sleeve, the first mounting ring, the second mounting ring, and the filter assembly, solves the problem that backwashing the filter disc requires an additional flushing structure installed in the filter, resulting in a larger filter size, affecting installation convenience, and insufficient overall strength of the filter disc. The advantages of this utility model are: the filter disc directly integrates the backwashing structure, increasing the compactness of the filter using this filter disc, and the overall strength of the filter disc is higher.

Description

Technical Field

[0001] This utility model belongs to the field of filter disc technology, and in particular relates to a backwashable filter disc structure. Background Technology

[0002] A filter disc typically consists of the filter disc material, filter media, support frame, and cleaning system. The filter disc material must be selected based on corrosion resistance and temperature resistance, such as stainless steel, polypropylene, or ceramic. The precision of the filter media ranges from micrometers to nanometers, directly affecting the filtration effect. The support frame ensures the stability of the filter disc under high pressure or high speed operation. Some filter discs are also equipped with automatic backwashing or ultrasonic cleaning devices to improve long-term efficiency, but they still have the following drawbacks in practical use:

[0003] During the use of filter discs, backwashing usually requires the installation of an additional backwashing structure inside the filter. This structure occupies more internal space in the filter, resulting in a larger overall size and affecting the ease of installation of the filter using the filter disc.

[0004] Secondly, during the filtration process, the liquid to be filtered is delivered into the filter and filtered through the filter. However, after a period of filtration, the filter resistance increases, which can easily cause the filter to deform due to the resistance. Utility Model Content

[0005] The purpose of this utility model is to provide a backwashable filter disc structure. By setting an outer fixing sleeve, mounting ring one, mounting ring two and filter components, it solves the problem that backwashing the filter disc requires the installation of an additional flushing structure in the filter, which results in a large filter size, affects the ease of installation and the overall strength of the filter disc is not high enough.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a backwashable filter disc structure, comprising an outer fixing sleeve, a first mounting ring, a second mounting ring, and a filter assembly. The second mounting ring is fixed to the top of the outer fixing sleeve, and the first mounting ring is fixed to the bottom of the outer fixing sleeve. Both the first and second mounting rings have vertically penetrating mounting holes arranged in a ring array. The filter assembly is fixed to the middle of the inner wall of the outer fixing sleeve. The top and bottom of the filter assembly are provided with reinforcing rings. During operation, the filter assembly is fixed in the outer fixing sleeve, and the first and second mounting rings provide mounting for the outer fixing sleeve. Backwash liquid is introduced into the outer fixing sleeve through the first mounting ring. After backwashing the filter assembly, the liquid is transported to the second mounting ring. The liquid to be filtered is filtered by the filter assembly after entering the outer fixing sleeve.

[0008] Furthermore, inner reinforcing sleeves are fixed on the inner walls of the outer fixing sleeves at the top and bottom of the filter assembly. Two reinforcing rings are fixed at the edges of the inner walls of the two inner reinforcing sleeves that are close to each other. The filter assembly enhances its stability through the inner reinforcing sleeves and reinforcing rings. One inner reinforcing sleeve is fixed at each of the upper and lower ends of the inner wall of the outer fixing sleeve, and the reinforcing rings are installed on the inner edge of the inner reinforcing sleeves, forming a double support for the filter assembly and preventing it from shifting or deforming under liquid impact.

[0009] Furthermore, both mounting ring one and mounting ring two are hollow inside. The inner diameter of mounting ring one and mounting ring two is equal to the inner diameter of the inner reinforcing sleeve. The hollow design of mounting ring one and mounting ring two, with their inner diameter matching that of the inner reinforcing sleeve, ensures the continuity of the fluid channel. The hollow structure allows backflushing liquid to pass through the inside of the mounting ring while maintaining a match with the inner diameter of the outer fixed sleeve, reducing fluid resistance.

[0010] Furthermore, the inner ring of the first mounting ring has an output hole in a ring array, and the inner ring of the second mounting ring has an input hole in a ring array. The first and second mounting rings adopt a hollow design, and their inner diameter is consistent with that of the inner reinforcing sleeve to ensure the continuity of the fluid channel. The hollow structure allows backflushing liquid to pass through the inside of the mounting ring, while maintaining a match with the inner diameter of the outer fixed sleeve to reduce fluid resistance.

[0011] Furthermore, a flushing pipe is fixedly connected to the periphery of the first mounting ring, and a recovery pipe is fixedly connected to the periphery of the second mounting ring. The flushing pipe is connected to an external cleaning device, and the recovery pipe is connected to a waste liquid treatment system. The flushing pipe inputs high-pressure cleaning fluid into the first mounting ring, and the recovery pipe discharges the cleaned wastewater from the second mounting ring, realizing closed-loop circulation cleaning without the need to disassemble the filter.

[0012] Furthermore, the filter assembly includes a fine filter disc, a coarse filter disc, and filter holes. The top of the fine filter disc is fixed with a coarse filter disc, and filter holes are uniformly and continuously opened in the coarse filter disc. The filter assembly adopts a double-layer structure of coarse and fine filter discs. The coarse filter disc intercepts large particulate impurities through the filter holes, and the fine filter disc performs fine filtration. The graded treatment improves the filtration efficiency and extends the filter element life.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of requiring an additional flushing structure in the filter for backwashing the filter disc, resulting in a larger filter size and reduced installation convenience, by setting an outer fixing sleeve, mounting ring one, mounting ring two, and a filter assembly. After the filtration performance decreases, the filter's output valve is closed, and the equipment for conveying flushing liquid and recovering the flushing liquid is opened. The flushing liquid is conveyed to mounting ring one through the flushing pipe, then to the outer fixing sleeve through the output hole on the inner side of mounting ring one, and then rises through the outer fixing sleeve to the upper part of the outer fixing sleeve, entering the input hole on the inner wall of mounting ring two. After entering mounting ring one, it is then conveyed to the recovery pipe, and finally to the equipment for recovering the flushing liquid, thus backwashing the filter assembly. This allows the filter disc to be directly integrated with the backwashing structure, resulting in a smaller filter size and greater ease of installation.

[0015] This invention solves the problem of insufficient overall strength of the filter disc by setting an outer fixing sleeve and a filter assembly. During the filtration process, the fluid flowing downward from the upper part of the outer fixing sleeve is first delivered to the coarse filter disc and filtered by the filter holes on the coarse filter disc. Then it is delivered to the fine filter disc and filtered by the fine filter disc. During the process of the liquid passing through the outer fixing sleeve, when it passes through the filter assembly, the inner reinforcing sleeve and reinforcing ring inside the outer fixing sleeve cooperate to increase the stability of the filter assembly during operation, so that the overall strength of the filter disc is higher. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0017] Figure 1 A three-dimensional view of the assembly structure of a backwashable filter disc;

[0018] Figure 2 This is a three-dimensional structural view of the external fixing sleeve;

[0019] Figure 3 A three-dimensional structural view of the installation ring 1;

[0020] Figure 4 A three-dimensional structural diagram of the installation ring 2;

[0021] Figure 5 This is a three-dimensional structural diagram of the filter assembly.

[0022] Figure label:

[0023] 1. Outer fixing sleeve; 101. Inner reinforcing sleeve; 102. Reinforcing ring; 2. Mounting ring one; 201. Output hole; 202. Flushing pipe; 203. Mounting hole; 3. Mounting ring two; 301. Input hole; 302. Recovery pipe; 4. Filter assembly; 401. Fine filter plate; 402. Coarse filter plate; 403. Filter holes. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0025] Please see Figure 1-4 This utility model is a backwashable filter disc structure, including an outer fixing sleeve 1, a mounting ring 1 2, a mounting ring 2 3, and a filter assembly 4. The top end of the outer fixing sleeve 1 is fixed with the mounting ring 2 3, and the outer fixing sleeve 1 fixes the filter assembly 4 therein. The upper part of the fixing sleeve is installed through the mounting ring 2 3. The bottom end of the outer fixing sleeve 1 is fixed with the mounting ring 1 2, which is installed in the lower part of the outer fixing sleeve 1. The mounting ring 1 2 and the mounting ring 2 3 are both arranged in a ring array with vertically penetrating mounting holes 203. The mounting ring 1 2 and the mounting ring 2 3 are installed through the mounting holes 203. The filter assembly 4 is fixed in the middle of the inner wall of the outer fixing sleeve 1. When the filter assembly 4 is working, it filters the liquid that has passed through the outer fixing sleeve 1. The top and bottom ends of the filter assembly 4 are provided with reinforcing rings 102, which increase the support of the filter assembly 4 in the outer fixing sleeve 1.

[0026] Specifically, inner reinforcing sleeves 101 are fixed on the inner walls of the outer fixing sleeves 1 at the top and bottom of the filter assembly 4, and two reinforcing rings 102 are fixed at the edges of the inner walls of the two inner reinforcing sleeves 101 that are close to each other. The filter assembly 4 increases the connection stability of the filter assembly 4 in the outer fixing sleeve 1 through the inner reinforcing sleeves 101 and the reinforcing rings 102.

[0027] Furthermore, both mounting ring 2 and mounting ring 3 are hollow inside. The inner diameter of mounting ring 2 and mounting ring 3 is equal to the inner diameter of the inner reinforcing sleeve 101. The hollow design of mounting ring 2 and mounting ring 3 allows the backwashing liquid to be transported through mounting ring 2 and mounting ring 3.

[0028] Furthermore, the inner ring of mounting ring 1 2 has an output hole 201 arranged in a ring array, and the inner ring of mounting ring 2 3 has an input hole 301 arranged in a ring array. The liquid entering the mounting ring 1 2 is transported to the output hole 201, enters the outer fixing sleeve 1, passes through the outer fixing sleeve 1, and then enters the input hole 301 on the mounting ring 2 3, and enters the mounting ring 2 3.

[0029] Furthermore, a flushing pipe 202 is fixedly connected to the periphery of mounting ring 1 2, and a recovery pipe 302 is fixedly connected to the periphery of mounting ring 2 3. The end of flushing pipe 202 away from mounting ring 1 2 is fixedly connected to the output end of the equipment that conveys flushing liquid, and the end of mounting ring 2 3 away from recovery pipe 302 is fixedly connected to the input end of the equipment that recovers the flushed liquid.

[0030] The operation process of this embodiment is as follows: During operation, the outer fixing sleeve 1 is first placed into the installation device inside the filter. Then, the installation bolts are installed through the installation holes 203 in the mounting ring 2 and mounting ring 3. The end of the flushing pipe 202 furthest from the mounting ring 2 is connected to the output end of the device conveying the flushing liquid, and the end of the mounting ring 3 furthest from the recovery pipe 302 is fixedly connected to the input end of the device recovering the flushed liquid. During operation, the filtered liquid enters from above the outer fixing sleeve 1, is filtered by the filter assembly 4, and then transported to the bottom of the outer fixing sleeve 1. The filtered liquid is then filtered by the filter assembly 4. After a certain period of time, when the filtration performance declines, the filter's output valve is closed, and the equipment for conveying the flushing liquid and the equipment for recovering the flushed liquid are opened. The flushing liquid is conveyed to the mounting ring 2 through the flushing pipe 202, and then to the outer fixing sleeve 1 through the output hole 201 on the inner side of the mounting ring 2. It is then conveyed to the upper part of the outer fixing sleeve 1 through the outer fixing sleeve 1 and enters the input hole 301 on the inner wall of the mounting ring 3. After entering the mounting ring 2, it is then conveyed to the recovery pipe 302 and then to the equipment for recovering the flushed liquid, thus backwashing the filter assembly 4. Specific Implementation Example 2

[0031] Please see Figure 1 , 2 5. Based on the specific embodiment 1, the filter assembly 4 includes a fine filter plate 401, a coarse filter plate 402 and filter holes 403. The top of the fine filter plate 401 is fixed with the coarse filter plate 402. The filter holes 403 are uniformly opened in the coarse filter plate 402. When the filter assembly 4 is working, the fluid flowing downward from the upper part of the outer fixed sleeve 1 is first transported to the coarse filter plate 402, filtered by the filter holes 403 on the coarse filter plate 402, and then transported to the fine filter plate 401 for filtration.

[0032] The operation process of this embodiment is as follows: During the filtration process, the fluid flowing downward from the upper part of the outer fixed sleeve 1 is first transported to the coarse filter plate 402 and filtered by the filter holes 403 on the coarse filter plate 402. Then it is transported to the fine filter plate 401 and filtered by the fine filter plate 401. During the process of the liquid passing through the outer fixed sleeve 1, when it passes through the filter assembly 4, the inner reinforcing sleeve 101 and the reinforcing ring 102 in the outer fixed sleeve 1 cooperate to increase the stability of the filter assembly 4 during operation.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A backwashable filter disc structure, comprising an outer fixing sleeve (1), a mounting ring one (2), a mounting ring two (3), and a filter assembly (4), characterized in that: The top end of the outer fixing sleeve (1) is fixed with a second mounting ring (3), and the bottom end of the outer fixing sleeve (1) is fixed with a first mounting ring (2). The first mounting ring (2) and the second mounting ring (3) are both arranged in a ring array with vertically penetrating mounting holes (203). The middle part of the inner wall of the outer fixing sleeve (1) is fixed with a filter assembly (4). The top and bottom ends of the filter assembly (4) are both provided with reinforcing rings (102).

2. The backwashable filter disc structure according to claim 1, characterized in that: The filter assembly (4) has inner reinforcing sleeves (101) fixed on the inner walls of the outer fixing sleeves (1) at the top and bottom ends, and the two reinforcing rings (102) are respectively fixed at the edges of the inner walls of the two inner reinforcing sleeves (101) that are close to each other.

3. The backwashable filter disc structure according to claim 1, characterized in that: The interiors of the first mounting ring (2) and the second mounting ring (3) are both hollow, and the inner diameters of the first mounting ring (2) and the second mounting ring (3) are equal to the inner diameter of the inner reinforcing sleeve (101).

4. The backwashable filter disc structure according to claim 3, characterized in that: The inner ring of the first mounting ring (2) is arranged in a ring array with output holes (201), and the inner ring of the second mounting ring (3) is arranged in a ring array with input holes (301).

5. The backwashable filter disc structure according to claim 4, characterized in that: The circumference of the first mounting ring (2) is fixedly connected to a flushing pipe (202), and the circumference of the second mounting ring (3) is fixedly connected to a recovery pipe (302).

6. The backwashable filter disc structure according to claim 1, characterized in that: The filter assembly (4) includes a fine filter plate (401), a coarse filter plate (402) and filter holes (403). The top of the fine filter plate (401) is fixed with the coarse filter plate (402), and filter holes (403) are uniformly opened in the coarse filter plate (402).

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