Residual liquid filtering assembly convenient to produce for filter

Abstract

The utility model discloses a filter raffinate filtering component convenient to produce, which relates to the field of filtering components, and is characterized by comprising a plurality of main filter elements arranged in a filtering tank body, the top ends of the main filter elements are communicated and connected with a plurality of collecting pipes, and liquid filtered by the main filter elements is discharged from the filtering tank body through the collecting pipes. The bottom of the collecting pipe is further communicated and connected with a vertical connecting pipe, the bottom of the vertical connecting pipe is communicated with a residual liquid discharging filter element, and the residual liquid discharging filter element is arranged at the bottom of the filtering tank body through the vertical connecting pipe so as to filter residual liquid at the bottom of the filtering tank body. The residual liquid discharging filter element is possibly still in a full liquid state, as long as pressure supply of compressed gas exists in the filtering tank body, liquid can continue to be filtered through the residual liquid discharging filter element and is discharged through the collecting pipe, the higher yield is achieved, and less filter accumulated liquid in the filtering tank body is achieved.

Description

Technical Field

[0001] This utility model relates to the field of filter components, and more specifically, it relates to a filter residual liquid filtration component that is easy to manufacture. Background Technology

[0002] After filtration, traditional filters leave some liquid residue at the bottom of the filter tank (hereinafter referred to as residual liquid). The residual liquid is usually filtered out by injecting compressed gas to pressurize the inside of the filter tank. However, the method of filtering residual liquid by pressurizing gas has the problem that the gas is discharged from the holes of the filter cartridge before reaching the bottom of the tank, resulting in insufficient pressure. Some liquid still accumulates in the tank and cannot be filtered, which affects the output of liquid.

[0003] To this end, application number 2024215857168 discloses a filter element that can improve the output of liquid. Under normal conditions, the liquid that has been filtered by the lower filter cartridge and enters the upper filter chamber is discharged through the notch of the central tube. After filtration, the accumulated liquid is discharged by injecting compressed gas. If there is still accumulated liquid at the bottom of the filter tank, the residual liquid that has been filtered by the lower filter cartridge and enters the lower filter chamber can be discharged through the sleeve to avoid the accumulation of liquid in the tank and affect the output of liquid.

[0004] However, although the filter element in the aforementioned patent can discharge residual liquid, its structure is relatively complex and difficult to manufacture. Specifically, the filter element requires a sleeve to be installed in the center of the central tube to form a nested double-pipe structure. This requires high precision in the coaxiality machining of the central tube and the sleeve, increasing the difficulty of tube cutting and assembly. A partition is set in the middle of the filter cartridge to divide the interior of the filter element into upper and lower chambers. An annular fixing plate needs to be welded to the outside of the partition and detachably connected to the filter cartridge with screws. This multi-level split structure increases the number of parts (such as the filter cartridge being divided into upper and lower groups, the addition of partitions, annular fixing plates, etc.). During assembly, multiple processes such as welding, threaded connection, and sealing need to be completed sequentially, significantly increasing the assembly complexity and thus making production difficult.

[0005] Therefore, in order to solve the above-mentioned technical problems, this application proposes a filter residual liquid filtration assembly that is easy to manufacture. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a filter residual liquid filtration component that is easy to produce.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a filter residual liquid filtration assembly that is easy to manufacture, comprising multiple main filter elements disposed within a filter tank. The top ends of the main filter elements are interconnected with multiple collecting pipes. Liquid filtered by the main filter elements is discharged from the filter tank through the collecting pipes. The bottom of the collecting pipes is also interconnected with a vertical connecting pipe, and the bottom of the vertical connecting pipe is connected to a residual liquid discharge filter element. The residual liquid discharge filter element is placed at the bottom of the filter tank through the vertical connecting pipe to filter the residual liquid at the bottom of the filter tank. The liquid is then discharged from the collecting pipe through the vertical connecting pipe.

[0008] Preferably, the bottom of the filter tank has a conical structure, and the residual liquid filter element is located at the lowest point of the conical structure.

[0009] Preferably, the residual liquid filter element is located below the main filter element.

[0010] Preferably, the filtration accuracy of the residual liquid filter element is higher than that of the main filter element.

[0011] Preferably, a valve is installed on the vertical connecting pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model simplifies the overall structure by optimizing the residual liquid filtration path, thereby solving the problem of high production difficulty caused by the complex filter element structure in the background technology: it does not require the nested double pipe structure such as the coaxial nesting of the central pipe and the sleeve inside the filter element. Instead, it directly connects the collecting pipe to the residual liquid discharge filter element at the bottom of the tank through an external independent vertical connecting pipe, avoiding the need for high-precision coaxiality processing. At the same time, the main filter element and the residual liquid discharge filter element adopt a split design, eliminating the need for multi-level partition structures such as partitions and annular fixing plates inside the filter element. The number of parts is significantly reduced, and many assembly processes are omitted. Moreover, the residual liquid discharge filter element is independently suspended at the bottom of the tank, eliminating the need to modify the internal flow channel of the main filter element. This reduces the process difficulty of pipe cutting and cavity partitioning. While realizing the residual liquid filtration and discharge function, it significantly improves production efficiency and reduces manufacturing costs.

[0014] 2. When the liquid that the main filter element can handle is completely processed and gas is discharged, the residual liquid discharge filter element may still be in a full liquid state. As long as there is a pressure supply of compressed gas in the filter tank 1, the liquid can continue to be filtered through the residual liquid discharge filter element and discharged through the collection pipe to achieve a higher yield and realize less filter liquid accumulation in the filter tank, thereby preventing residual liquid in the filter tank.

[0015] 3. The filter assembly of this utility model is installed on a filter tank with a conical bottom structure. The residual liquid discharge filter element is located at the lowest point of the conical structure. By adopting a conical structure at the bottom of the filter tank and setting the residual liquid discharge filter element at the lowest point, the residual liquid can be guided by gravity to naturally converge to the position of the residual liquid discharge filter element, effectively solving the residue problem caused by dead corners of liquid accumulation in traditional flat-bottomed tanks.

[0016] 4. This utility model has a valve installed on the vertical connecting pipe. By controlling the opening and closing of the valve, the filtration process can be divided into the "main filter element filtration stage" and the "residual liquid fine filtration stage". When the main filter element is filtering normally, the valve is kept closed to prevent residual liquid at the bottom of the tank from entering the collection pipe in advance and interfering with the main filtration process. After the main filtration is completed, the valve is opened remotely or automatically by the control system, so that the residual liquid is discharged after directional filtration by the residual liquid discharge filter element, ensuring that the two filtration conditions do not interfere with each other. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the filter assembly of this utility model installed on the filter tank;

[0019] Figure 2 This utility model Figure 1 Another perspective on the specific structure;

[0020] Figure 3 This is a schematic diagram of the specific structure of the filter assembly of this utility model;

[0021] Figure 4 This utility model Figure 3 Another perspective on the specific structure.

[0022] In the diagram: 1. Filter tank; 2. Main filter element; 3. Collection pipe; 4. Vertical connecting pipe; 5. Residual liquid discharge filter element. Detailed Implementation

[0023] like Figure 1-4 As shown, this utility model provides a filter residual liquid filtration assembly that is easy to manufacture, including multiple main filter elements 2 disposed in a filter tank 1. The top of the main filter elements 2 is interconnected with multiple collecting pipes 3, and the bottom of the collecting pipes 3 is interconnected with vertical connecting pipes 4. The bottom of the vertical connecting pipes 4 is connected to the residual liquid discharge filter element 5, and the residual liquid discharge filter element 5 is placed at the bottom of the filter tank 1 through the vertical connecting pipes 4.

[0024] In use, first input a sufficient amount of liquid to be filtered into the filter tank 1. Then, through a power device (such as a centrifugal pump), the liquid filtered by the main filter element 2 is discharged from the filter tank 1 through the collection pipes 3. After filtration is completed, turn off the power device and pressurize the remaining liquid in the filter tank 1 through the main filter element 2 by introducing compressed gas into the filter tank 1.

[0025] The following is a detailed process for draining residual liquid: First, compressed gas is introduced into the filter tank 1. The compressed gas force applies pressure to the filter elements (main filter element 2 and residual liquid draining filter element 5), causing the liquid filtered by the main filter element 2 to be discharged from the filter tank 1 through the collecting pipe 3. At this time, the residual liquid draining filter element 5 also filters the liquid located at the bottom of the filter tank 1 and finally discharges it through the vertical connecting pipe 4 and the collecting pipe 3 (the main filter element 2 and the collecting pipe 3 converge on the same pipe). That is to say, when the liquid that the main filter element 2 can handle is processed and gas is discharged, the residual liquid draining filter element 5 may still be in a full liquid state. As long as there is a compressed gas pressure supply in the filter tank 1, the liquid can continue to be filtered through the residual liquid draining filter element 5 and discharged through the collecting pipe 3, achieving a higher yield and less filter liquid accumulation in the filter tank 1, thereby preventing residual liquid from existing in the filter tank 1. This utility model simplifies the overall structure by optimizing the residual liquid filtration path, thus solving the problems in the background technology of filter... The problem of complex core structure and high production difficulty is addressed by eliminating the need for nested double-pipe structures such as coaxial nesting of the central tube and the sleeve inside the filter element. Instead, an external independent vertical connecting pipe 4 directly connects the collecting pipe 3 to the residual liquid discharge filter element 5 at the bottom of the tank, avoiding the need for high-precision coaxiality machining. At the same time, the main filter element 2 and the residual liquid discharge filter element 5 adopt a split design, eliminating the need for multi-level partition structures such as baffles and annular fixing plates inside the filter element. This significantly reduces the number of parts and omits many assembly processes. Furthermore, the residual liquid discharge filter element 5 is independently suspended at the bottom of the tank, eliminating the need to modify the internal flow channel of the main filter element 2. This reduces the process difficulty of pipe cutting and cavity partitioning, significantly improving production efficiency (facilitating production) and reducing manufacturing costs while achieving the residual liquid filtration and discharge function.

[0026] Furthermore, firstly, the bottom of the filter tank 1 has a conical structure, with the residual liquid discharge filter element 5 located at the lowest point of the conical structure. This design, using a conical bottom for the filter tank 1 and placing the residual liquid discharge filter element 5 at the lowest point, allows the residual liquid to naturally converge to the discharge filter element position through gravity, effectively solving the residue problem caused by dead zones in traditional flat-bottomed tanks. Specifically, the inclination angle of the conical structure (preferably 60°-120° cone angle) causes the liquid to flow directionally along the conical surface to the lowest point under gravity, avoiding the formation of flow blind zones. The residual liquid discharge filter element 5 is directly installed at this lowest point, maximizing the capture of the collected residual liquid and reducing dead volume. Moreover, the residual liquid discharge filter element 5 is located below the main filter element 2. This layered layout creates a "coarse filtration-fine filtration" staged filtration system—the main filter element 2 handles most of the fluid, while the residual liquid discharge filter element 5 specifically filters residual liquids with high impurity concentrations, making it suitable for higher-precision filter media (such as micron-level filter media). To prevent the main filter element 2 from clogging due to handling high-load impurities and extend its overall service life, and to accommodate the aforementioned "coarse filtration-fine filtration" graded filtration system, the residual liquid discharge filter element 5 in this invention requires a higher filtration precision than the main filter element 2. The main filter element 2 prioritizes handling high-flow-rate fluids, trapping larger particulate impurities and reducing the overall system load; while the residual liquid discharge filter element 5 performs targeted fine filtration of the high-concentration residual liquid at the bottom of the tank (containing fine particles, colloids, suspended solids, and other difficult-to-filter impurities). Its higher filtration precision (such as micron-level filter media) can effectively capture the fine impurities missed by the main filter element 2, avoiding the problem of increased filtration resistance due to impurity accumulation in the residual liquid. This differentiated design not only prevents the main filter element 2 from clogging rapidly due to contact with high-concentration impurity fluids, extending its replacement cycle, but also improves the residual liquid recovery rate and filtrate purity through fine filtration.

[0027] This utility model can also install a valve on the vertical connecting pipe 4. By controlling the opening and closing of the valve, the filtration process can be divided into the "main filter element 2 filtration stage" and the "residual liquid fine filtration stage". When the main filter element 2 is filtering normally, the valve is kept closed to prevent the residual liquid at the bottom of the tank from entering the collecting pipe 3 in advance and interfering with the main filtration process. After the main filtration is completed, the valve is opened remotely or automatically by the control system, so that the residual liquid is discharged after directional filtration by the residual liquid discharge filter element 5, ensuring that the two filtration conditions do not interfere with each other.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A filter residual liquid filtration assembly that is easy to manufacture, comprising a plurality of main filter elements (2) disposed in a filter tank (1), wherein the top ends of the main filter elements (2) are interconnected with a plurality of collecting pipes (3), and the liquid filtered by the main filter elements (2) is discharged from the filter tank (1) through the collecting pipes (3), characterized in that: The bottom of the collecting pipe (3) is also connected to a vertical connecting pipe (4), and the bottom of the vertical connecting pipe (4) is connected to the residual liquid filter element (5). The residual liquid filter element (5) is placed at the bottom of the filter tank (1) through the vertical connecting pipe (4) to filter the residual liquid at the bottom of the filter tank (1). Then, it is discharged from the collecting pipe (3) through the vertical connecting pipe (4).

2. The filter residual liquid filtration assembly for easy production according to claim 1, characterized in that: The bottom of the filter tank (1) is conical, and the residual liquid filter element (5) is located at the lowest point of the conical structure.

3. The filter residual liquid filtration assembly for easy production according to claim 1, characterized in that: The residual liquid filter element (5) is located below the main filter element (2).

4. The filter residual liquid filtration assembly for easy production according to claim 1, characterized in that: The filtration accuracy of the residual liquid filter element (5) is higher than that of the main filter element (2).

5. The filter residual liquid filtration assembly for easy production according to claim 1, characterized in that: A valve is installed on the vertical connecting pipe (4).

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