Combined filter device

By combining pre-filtration and deep filtration with a backwashing structure, the problem of easy clogging of filter elements in existing technologies is solved, achieving efficient removal of beer impurities and reducing maintenance costs.

CN224331705UActive Publication Date: 2026-06-09SICHUAN GUANGAN HECHENG FORESTRY DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN GUANGAN HECHENG FORESTRY DEV CO LTD
Filing Date
2025-06-13
Publication Date
2026-06-09

Smart Images

  • Figure CN224331705U_ABST
    Figure CN224331705U_ABST
Patent Text Reader

Abstract

The utility model relates to filter device technical field, concretely is combined filter device, including prefiltering device, the side end fixed mounting of prefiltering device has depth filter device, the top fixed mounting of prefiltering device has flushing device, prefiltering device includes frame, the inner wall sliding installation of frame has screen, the side end fixed mounting of frame has connecting pipe, the side end of frame has set up first liquid inlet hole. Improved filter device, through screen cooperation frame, carry out simple prefiltration once after fermenting beer, remove the larger granular impurity in beer, after filtering is completed through connecting pipe and flows into the inside of depth filter device, then through four filter core, carry out filtration again, thereby remove the smaller impurity in beer, thereby realize step by step filtration, flush the corresponding filter screen and filter core after the device through multiple filtration simultaneously through water pump cooperation second spray head, first spray head.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically a combined filtration device. Background Technology

[0002] The beer production process begins by crushing the malt, mixing it with water for saccharification to extract wort, then boiling the wort, adding hops for flavoring, cooling it, and then introducing yeast for fermentation. After fermentation, the beer needs to be filtered to remove suspended particles, improve the clarity and stability of the beer, and ensure that the finished beer is clear, transparent, and has a pure taste.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] Most combination filtration devices on the market today use a single filtration unit. Therefore, when filtering fermented beer, it is difficult to accurately remove impurities of different sizes, resulting in poor filtration and affecting the quality of the beer. At the same time, impurities that accumulate in the filter cartridge can easily clog it, which not only reduces filtration efficiency but also requires frequent manual disassembly and cleaning, increasing maintenance costs and operational complexity. Utility Model Content

[0005] The purpose of this invention is to provide a combined filtration device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined filtration device, including a pre-filtration device, a depth filtration device fixedly installed on the side end of the pre-filtration device, and a rinsing device fixedly installed on the top of the pre-filtration device;

[0007] The pre-filtration device includes a frame, a screen is slidably installed on the inner wall of the frame, a connecting pipe is fixedly installed on the side end of the frame, and a first liquid inlet is opened on the side end of the frame.

[0008] A second liquid inlet is fixedly installed at one end of the connecting pipe, a cover is fixedly installed at the bottom of the second liquid inlet, a funnel is slidably installed on the inner wall of the cover, a limiting plate is fixedly installed inside the funnel, four filter elements are slidably installed on the top of the limiting plate, and a shell is fixedly installed on the outer surface of the funnel.

[0009] More preferably, the top of the frame is threaded with a top cover, and the top of the top cover has a first opening.

[0010] More preferably, the frame is connected to the top cover and the connecting pipe by flanges and bolts.

[0011] More preferably, the outer surface of the outer shell is provided with a plurality of second openings, a liquid outlet is fixedly installed on the side end of the outer shell, and the internal cavity of the outer shell is connected to the liquid outlet.

[0012] More preferably, the funnel, together with the limiting plate and four filter elements slidably mounted on the top of the limiting plate, constitute a filtration structure.

[0013] More preferably, a plurality of first nozzles are fixedly installed on the outer surface of the housing, and the same first water pipe is fixedly installed at one end of each first nozzle. A second water pipe is fixedly installed on the outer surface of the first water pipe, and a second nozzle is fixedly installed at one end of the second water pipe. A water pump is fixedly installed at one end of the first water pipe. The water pump, together with the first nozzle and the second nozzle, forms a backwashing structure through the first water pipe, the second water pipe, and the first nozzle.

[0014] More preferably, the side end of the water pump is connected to the water pump pipe by flange bolts, and a water tank is slidably installed at one end of the water pump pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This filtration device uses a screen and frame to perform a simple pre-filtration of fermented beer, removing larger particulate impurities. After filtration, the beer flows into a deep filtration device through a connecting pipe, where it passes through four filter cartridges for a second filtration, removing smaller impurities. This achieves step-by-step filtration. Simultaneously, a water pump, along with a second and first spray nozzle, washes the corresponding screens and filter cartridges after multiple filtrations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pre-filtration device of this utility model;

[0018] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the deep filtration device of this utility model;

[0020] Figure 4 This is a schematic diagram of the rinsing device of this utility model.

[0021] In the diagram: 1. Pre-filtration device; 11. Frame; 12. Screen; 13. Connecting pipe; 14. First liquid inlet; 15. Top cover; 16. First opening; 2. Depth filtration device; 21. Second liquid inlet; 22. Cover; 23. Funnel; 24. Limiting plate; 25. Filter element; 26. Outer shell; 27. Second opening; 28. Liquid outlet; 3. Flushing device; 31. First nozzle; 32. First water pipe; 33. Second water pipe; 34. Second nozzle; 35. Water pump; 36. Water pipe; 37. Water tank. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 4 The present invention provides a technical solution: a combined filtration device, including a pre-filtration device 1, a depth filtration device 2 fixedly installed on the side end of the pre-filtration device 1, and a rinsing device 3 fixedly installed on the top of the pre-filtration device 1.

[0024] The pre-filtration device 1 includes a frame 11, a screen 12 is slidably installed on the inner wall of the frame 11, a connecting pipe 13 is fixedly installed on the side end of the frame 11, and a first liquid inlet hole 14 is opened on the side end of the frame 11.

[0025] A second liquid inlet 21 is fixedly installed at one end of the connecting pipe 13. A cover 22 is fixedly installed at the bottom of the second liquid inlet 21. A funnel 23 is slidably installed on the inner wall of the cover 22. A limiting plate 24 is fixedly installed inside the funnel 23. Four filter elements 25 are slidably installed on the top of the limiting plate 24. A shell 26 is fixedly installed on the outer surface of the funnel 23.

[0026] In this embodiment, as Figure 1 and Figure 2 As shown, a top cover 15 is threaded onto the top of the frame 11, and a first opening 16 is provided on the top of the top cover 15.

[0027] In this embodiment, as Figure 1 and Figure 2 As shown, the frame 11 is connected to the top cover 15 and the connecting pipe 13 by flanges and bolts.

[0028] In this embodiment, as Figure 1 and Figure 3As shown, the outer surface of the outer shell 26 is provided with a number of second openings 27, and the side end of the outer shell 26 is fixedly installed with a liquid outlet hole 28, and the internal cavity of the outer shell 26 is connected to the liquid outlet hole 28.

[0029] In this embodiment, as Figure 1 and Figure 3 As shown, the funnel 23, together with the limiting plate 24 and the four filter elements 25 slidably mounted on the top of the limiting plate 24, constitute a filtration structure.

[0030] In this embodiment, as Figure 1 and Figure 4 As shown, a plurality of first nozzles 31 are fixedly installed on the outer surface of the housing 26. Each first nozzle 31 has the same first water pipe 32 fixedly installed at one end. A second water pipe 33 is fixedly installed on the outer surface of the first water pipe 32. A second nozzle 34 is fixedly installed at one end of the second water pipe 33. A water pump 35 is fixedly installed at one end of the first water pipe 32. The water pump 35, together with the first nozzles 31 and the second nozzles 34, forms a backwashing structure through the first water pipe 32, the second water pipe 33, and the first nozzles 31 and the second nozzles 34.

[0031] In this embodiment, as Figure 1 and Figure 4 As shown, the side end of the water pump 35 is connected to the water pump pipe 36 by flange bolts, and a water tank 37 is slidably installed at one end of the water pump pipe 36.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the combined filtration device operates as follows during use:

[0033] First, the user needs to feed the fermented beer into the frame 11 through the first inlet 14. Then, it is filtered through the screen 12 to remove large particles of impurities. The pre-filtered beer flows out through the connecting pipe 13, which, along with the second inlet 21, is then fed into the deep filtration device 2. The beer fed into the device flows through the funnel 23 into four filter elements 25. Each filter element 25 has several pores, with the pore size gradually decreasing from the inside out, creating a gradient filtration effect that effectively removes small particles from the beer. Impurities such as those found in beer are filtered through multiple stages. The beer will flow out through the outlet hole 28. After multiple filtrations, impurities in the beer will accumulate on the screen 12 and filter element 25, affecting subsequent production filtration. Therefore, the user can start the water pump 35, which will draw water from the water tank 37 through the water pipe 36. Then, the water in the water tank 37 will be transported to the first nozzle 31 and the second nozzle 34 through the first water pipe 32 and the second water pipe 33 to spray out impurities that have accumulated on the outer surface of the screen 12 and filter element 25 during the filtration process. After cleaning, the user can continue production filtration.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] 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 preferred examples and are not intended to limit the 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined filtration device, comprising a pre-filtration device (1), characterized in that: A depth filter (2) is fixedly installed on the side end of the pre-filter (1), and a rinsing device (3) is fixedly installed on the top of the pre-filter (1). The pre-filtration device (1) includes a frame (11), a screen (12) is slidably installed on the inner wall of the frame (11), a connecting pipe (13) is fixedly installed on the side end of the frame (11), and a first liquid inlet hole (14) is opened on the side end of the frame (11). A second liquid inlet (21) is fixedly installed at one end of the connecting pipe (13). A cover (22) is fixedly installed at the bottom of the second liquid inlet (21). A funnel (23) is slidably installed on the inner wall of the cover (22). A limiting plate (24) is fixedly installed inside the funnel (23). Four filter elements (25) are slidably installed on the top of the limiting plate (24). A shell (26) is fixedly installed on the outer surface of the funnel (23).

2. The combined filtration device according to claim 1, characterized in that: The top of the frame (11) is threaded with a top cover (15), and the top of the top cover (15) has a first opening (16).

3. The combined filtration device according to claim 2, characterized in that: The frame (11) is connected to the top cover (15) and the connecting pipe (13) by flanges and bolts.

4. The combined filtration device according to claim 1, characterized in that: The outer surface of the outer shell (26) is provided with a plurality of second openings (27), and a liquid outlet hole (28) is fixedly installed on the side end of the outer shell (26).

5. The combined filtration device according to claim 1, characterized in that: The funnel (23) together with the limiting plate (24) and the four filter elements (25) slidably installed on the top of the limiting plate (24) constitute a filtration structure.

6. The combined filtration device according to claim 1, characterized in that: A plurality of first nozzles (31) are fixedly installed on the outer surface of the outer shell (26). One end of each first nozzle (31) is fixedly installed with the same first water pipe (32). A second water pipe (33) is fixedly installed on the outer surface of the first water pipe (32). A second nozzle (34) is fixedly installed on one end of the second water pipe (33). A water pump (35) is fixedly installed on one end of the first water pipe (32). The water pump (35) forms a backwashing structure in conjunction with the first nozzle (31) and the second nozzle (34) through the first water pipe (32) and the second water pipe (33).

7. The combined filtration device according to claim 6, characterized in that: The side end of the water pump (35) is connected to the water pipe (36) by flange bolts, and a water tank (37) is slidably installed at one end of the water pipe (36).