Filtering device for wine brewing

Abstract

The utility model discloses a filtering device for wine brewing, which relates to the technical field of wine brewing and comprises a filtering box body, a plurality of supporting legs are arranged at the bottom end of the filtering box body, a control panel is arranged on the end face of the filtering box body, and in order to achieve bacteriostasis, filtering and automatic foreign matter cleaning, a silver filtering assembly is arranged in the middle of the interior of the filtering box body. A filter screen cleaning assembly is arranged in the silver filter assembly, and a foreign matter cleaning box is arranged at the top end of the filter box body; a wine injection opening is formed in one side of the top end of the foreign matter cleaning box and used for injecting wine; a connecting mounting frame is arranged among the supporting legs, a plurality of filter cartridges are arranged in the connecting mounting frame, and wine outlets are formed in the bottom ends of the filter cartridges. By adopting the silver filtering assembly, the double functions of physical interception and chemical bacteriostasis are achieved, the chemical stability of the silver material is superior to that of stainless steel, metal pollution of a wine body is avoided, and therefore the limitation that traditional equipment depends on a single filtering material is broken through, and bacteriostasis, freezing resistance and flavor protection are integrated.

Description

Technical Field

[0001] This utility model relates to the field of alcoholic beverage brewing technology, and more specifically, to a filtration device for alcoholic beverage brewing. Background Technology

[0002] Baijiu (Chinese white liquor) is a beverage made primarily from grains, using koji (fermentation starter) and yeast as saccharification and fermentation agents. It utilizes starchy (or sugary) raw materials and undergoes processes such as cooking, saccharification, fermentation, distillation, aging, and blending. Filtration is a crucial step after fermentation. The filtration device is a key piece of equipment in the brewing process, achieving solid-liquid separation and improving the clarity and taste of the liquor. Traditional filtration techniques mostly employ physical interception principles, such as the use of gauze, filter screens, or diatomaceous earth adsorption as basic structures.

[0003] Traditional filtration devices, designed to ensure filtration quality, often have complex structures that make cleaning difficult. Fermentation products tend to adhere to the filter screen or the inner wall of the container, requiring frequent manual disassembly and cleaning. Regarding filter materials, the commonly used stainless steel screens are prone to metal ion migration, while plastic components may release plasticizers, affecting the sensory quality of the wine. Most filtration devices lack dynamic cleaning or antibacterial / microbial-inhibiting designs, resulting in multiple post-processing steps after filtration.

[0004] For example, Chinese patent CN219072340U discloses a filtration device for baijiu (Chinese liquor) brewing, belonging to the field of baijiu brewing technology. It includes a vertically arranged tank, inside which is a first filter assembly for filtering residues in the baijiu. Below the first filter assembly is a second filter assembly connected to the inside of the tank for clarifying the baijiu. The first filter assembly includes a first filter screen and a second filter screen connected to the inside of the tank. A cleaning unit for treating residues on the first and second filter screens is connected to a conveying pipe. It is evident that this filtration device employs a multi-layer filter screen and automatic filter screen cleaning design. Although it can periodically clean residues from the filter screen surface, it lacks an automatic recycling and cleaning function. Long-term use will still result in residue residue, leading to the growth of bacteria or germs, affecting the quality and taste of the liquor.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a filtration device for wine brewing to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A filtration device for brewing alcoholic beverages includes a filter box with multiple support legs at the bottom and a control panel on the end face. To achieve antibacterial, filtration, and automatic foreign matter removal, a silver filter assembly is located in the middle of the filter box, and a filter screen cleaning assembly is installed inside the silver filter assembly. A foreign matter cleaning box is located at the top of the filter box. A wine inlet is located on one side of the top of the foreign matter cleaning box for injecting alcoholic beverages. A connecting mounting bracket is provided between the multiple support legs, and multiple filter cylinders are installed inside the connecting mounting bracket, with wine outlets located at the bottom of each filter cylinder.

[0009] Furthermore, in order to use gravity to guide the filtered wine to the outlet and prevent impurities from remaining, and to use the filter mounting boss to fix the silver alloy filter cover and ensure the stability of the filter assembly, a filter mounting boss is set at the middle of the bottom of the filter box. A converging groove is opened at the bottom of the filter box and around the filter mounting boss, and an outlet is opened at the bottom of the converging groove.

[0010] Furthermore, in order to adjust the opening of the wine delivery pipe through the control panel to match the viscosity requirements of different types of wine, and to allow for the arbitrary selection of the filter cartridge to stop the wine supply for cleaning and replacement, a wine delivery pipe is installed at the top of the filter cartridge to match the wine outlet. In order to control the opening and closing and the flow rate of wine from the filter box into the filter cartridge, a solenoid valve is installed on the body of the wine delivery pipe.

[0011] Furthermore, in order to utilize a silver alloy filter screen that combines high hardness and corrosion resistance, and to increase the contact area through a ring-shaped distribution to adsorb and filter common impurities, residues, sulfides, and colloidal particles in the wine, the silver filter assembly includes a silver alloy filter screen mounted on top of the filter screen mounting boss. The inner circumference of the silver alloy filter screen is provided with several equidistantly arranged silver-plated pillars in a ring-shaped distribution, which are used to intercept and adsorb foreign objects present in the wine.

[0012] Furthermore, in order to supply alcohol to the interior through the alcohol inlet tube extending to the bottom of the filter box and to disperse the impact of the alcohol, an alcohol inlet tube connected to the alcohol inlet is installed at the top of the foreign matter cleaning box, and the bottom of the alcohol inlet tube extends into the interior of the silver alloy filter screen.

[0013] Furthermore, in order to be driven by a hydraulic lifting rod to move up and down along the silver-plated columns to scrape off attached impurities, the cleaning disc forms a closed space with the sealing protrusion when it rises to the top to prevent impurities from falling back. The filter cleaning assembly includes a cleaning disc inserted on the outside of all the silver-plated columns, with a wine injection pipe inserted on one side of the cleaning disc. A hydraulic lifting rod is installed at the top of the foreign matter cleaning box, and the output end of the hydraulic lifting rod passes through the inside of the filter box and is fixedly connected to the cleaning disc.

[0014] Furthermore, in order for the control panel to adjust the flow rate of each filter cartridge via solenoid valves and set the cleaning frequency via hydraulic lifting rods, and to support parameter presets (such as cleaning cycle and flow threshold) to adapt to different brewing processes, the control panel is electrically connected to multiple solenoid valves and hydraulic lifting rods respectively.

[0015] Furthermore, a food-grade silicone sealing ring is used to seal the contact surface between the convex tube and the cleaning plate to prevent wine leakage. The drain port and the liquid inlet form a reverse flushing channel to thoroughly remove residue. A liquid inlet is provided on one side of the foreign matter cleaning box, and a drain port is provided on the other side. A sealing convex tube is provided at the bottom of the foreign matter cleaning box. When the cleaning plate is raised to the top, the top of the cleaning plate is flush with the top of the sealing convex tube, and the contact surfaces of the cleaning plate, the sealing convex tube, the wine injection tube, and the silver-plated column remain sealed.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. By adopting silver filter components, the system achieves the dual functions of physical interception and chemical antibacterial action. Silver ions are released slowly at a rate of 0.08 mg / L·h, which can destroy the cell membranes of microorganisms (such as E. coli and yeast). At the same time, the surface of the silver-plated column adsorbs sulfides, colloidal particles and higher fatty acid esters in the wine through van der Waals forces. The chemical stability of silver is better than that of stainless steel, avoiding metal contamination of the wine. This breaks through the limitations of traditional equipment that relies on a single filter material, and achieves the integration of antibacterial, antifreeze and flavor protection.

[0018] 2. The cleaning disc is driven by a hydraulic lifting rod to move up and down periodically along the silver-plated column, dynamically scraping away impurities on the filter screen surface. The sealed protrusion of the foreign matter cleaning box and the sewage outlet are used to achieve centralized discharge of residue, effectively improving the disassembly and cleaning efficiency. In addition, it supports preset cleaning cycle and flow rate adjustment to adapt to different wine viscosities, solving the pain points of high downtime maintenance frequency and reliance on experience in operation of traditional equipment.

[0019] 3. The filter cartridge adopts a detachable design and supports filling with various types of filter materials, including diatomaceous earth, activated carbon, molecular sieves, etc., which not only ensures the impurity removal rate, but also improves the efficiency of cleaning and maintenance of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0021] Figure 1 This is a schematic diagram of a filtration device for brewing alcoholic beverages according to an embodiment of the present utility model;

[0022] Figure 2 This is a partial cross-sectional view of a filtration device for brewing alcoholic beverages according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the filter box in a wine brewing filtration device according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the support leg and connecting mounting frame structure in a wine brewing filtration device according to an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Filter housing; 2. Support legs; 3. Control panel; 4. Silver filter assembly; 401. Silver alloy filter screen cover; 402. Silver-plated column; 5. Filter cleaning assembly; 501. Cleaning disc; 502. Hydraulic lifting rod; 6. Foreign matter cleaning box; 7. Wine inlet; 8. Connecting mounting bracket; 9. Filter cylinder; 10. Wine outlet; 11. Filter mounting boss; 12. Combustion channel; 13. Leakage outlet; 14. Wine delivery pipe; 15. Solenoid valve; 16. Wine inlet pipe; 17. Liquid inlet; 18. Drain outlet; 19. Sealing protrusion. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to an embodiment of the present invention, a filtration device for brewing alcoholic beverages is provided.

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the filtration device for brewing alcoholic beverages according to an embodiment of the present invention includes a filter box 1. The bottom of the filter box 1 is provided with multiple support legs 2. The end face of the filter box 1 is provided with a control panel 3. In order to achieve antibacterial, filtration and automatic cleaning of foreign objects, a silver filter component 4 is provided in the middle of the filter box 1. The silver filter component 4 is provided with a filter screen cleaning component 5. The top of the filter box 1 is provided with a foreign object cleaning box 6. A wine inlet 7 is provided on one side of the top of the foreign object cleaning box 6 for injecting alcoholic beverages. A connecting mounting frame 8 is provided between the multiple support legs 2. Multiple filter cylinders 9 are provided inside the connecting mounting frame 8. The bottom of the filter cylinders 9 is provided with a wine outlet 10.

[0030] By employing the aforementioned technical solution and utilizing a silver filter component 4, a dual function of physical interception and chemical antibacterial action is achieved. Silver ions are released slowly at a rate of 0.08 mg / L·h, which can disrupt the cell membranes of microorganisms such as E. coli and yeast. Simultaneously, the surface of the silver-plated column 402 adsorbs sulfides, colloidal particles, and higher fatty acid esters in the wine through van der Waals forces. The chemical stability of silver is superior to that of stainless steel, avoiding metal contamination of the wine. This overcomes the limitations of traditional equipment that relies on a single filter material, achieving integrated antibacterial, antifreeze, and flavor protection. The cleaning disc 501 is driven by a hydraulic lifting rod 502 to periodically move up and down along the silver-plated column 402, dynamically scraping impurities from the filter screen surface. The sealed protrusion 19 of the foreign matter cleaning box 6 and the drain port 18 are used to centrally discharge the residue, effectively improving the disassembly and cleaning efficiency. In addition, it supports preset cleaning cycles and flow rate adjustment to adapt to different wine viscosities, solving the pain points of high downtime maintenance frequency and reliance on experience in operation of traditional equipment. The filter cartridge 9 features a detachable design, supporting the filling of various types of filter materials, including diatomaceous earth, activated carbon, and molecular sieves, which not only ensures the impurity removal rate but also improves the efficiency of device cleaning and maintenance.

[0031] In one embodiment, for the filter box 1, a filter screen mounting boss 11 is provided at the middle of the bottom of the filter box 1. A converging inclined groove 12 is provided at the bottom of the filter box 1 and around the filter screen mounting boss 11. A wine leakage outlet 13 is provided at the bottom of the converging inclined groove 12, so as to guide the filtered wine to the wine leakage outlet 13 by gravity, thereby preventing impurities from remaining. The silver alloy filter screen cover 401 is fixed by the filter screen mounting boss 11 to ensure the stability of the filter assembly.

[0032] In one embodiment, the filter cylinder 9 is provided with a wine delivery pipe 14 at the top of the filter cylinder 9 that cooperates with the wine outlet 13. In order to control the opening and closing and the flow rate of wine from the filter box 1 into the filter cylinder 9, a solenoid valve 15 is provided on the body of the wine delivery pipe 14. The opening of the wine delivery pipe 14 can be adjusted by programming the control panel 3 to match the viscosity requirements of different types of wine. The filter cylinder 9 can also be stopped from supplying wine for cleaning and replacement.

[0033] It should be noted that the filter cartridge 9 is filled with composite filter material to achieve efficient removal of impurities, off-flavors, and suspended solids from the liquor. The composite filter material includes at least one of the following: diatomaceous earth filter layer, activated carbon filter element, polymer molecular sieve, membrane filter material (such as PE membrane), or magnetized supramolecular material. Specifically, diatomaceous earth has a porous honeycomb structure (pore size 1-10 μm), which physically adsorbs and traps impurities; activated carbon surface micropores (0.1-1 nm) adsorb small molecule off-flavor substances through van der Waals forces, while simultaneously catalyzing the oxidation of fusel oils (such as isoamyl alcohol); the uniform pore size of the molecular sieve (e.g., 0.5-1 nm) intercepts substances of specific molecular weights through a sieving effect; the dense micropores of the membrane material separate impurities through mechanical trapping, maintaining the clarity of the liquor; and the magnetized supramolecular material magnetizes the liquor molecules through a magnetic field, accelerating the esterification reaction and shortening the aging period.

[0034] In one embodiment, the silver filter assembly 4 includes a silver alloy filter screen cover 401 disposed on the top of the filter screen mounting boss 11. The inner circumference of the silver alloy filter screen cover 401 is provided with a plurality of silver-plated pillars 402 arranged at equal intervals in a ring to intercept and adsorb foreign matter present in the wine. Thus, the silver alloy filter screen cover 401 has both high hardness and corrosion resistance. The ring distribution increases the contact area and adsorbs and filters common impurities, residues, sulfides and colloidal particles in the wine.

[0035] It should be noted that the silver alloy filter screen 401 adopts a mesh microporous structure (pore size 5-10μm), which mechanically intercepts large particulate impurities (such as pectin, starch polysaccharides, and mash residue) in the wine. Simultaneously, the surface roughness of silver (Ra≤0.8μm) enhances adsorption, achieving an adsorption rate of up to 85% for colloidal particles such as sulfides and higher fatty acid esters. The silver-plated columns 402, arranged in a ring, extend the contact time with the wine through turbulence. The silver plating layer adsorbs odor-causing substances such as aldehydes and phenols through van der Waals forces, increasing adsorption efficiency by 40% compared to traditional stainless steel materials.

[0036] The silver alloy filter screen (Ag80%-Ti20%) releases silver ions at a rate of 0.05-0.1 mg / L·h, disrupting microbial cell membranes (such as E. coli and yeast), with an antibacterial rate ≥95%. The silver-plated column surface generates Ag⁺ through an electrochemical oxidation reaction, inhibiting the growth of lactic acid bacteria and acetic acid bacteria in the wine, thus preventing spoilage caused by contamination during fermentation.

[0037] In one embodiment, for the foreign matter cleaning box 6, the top of the foreign matter cleaning box 6 is provided with a wine inlet pipe 16 that is connected to the wine inlet 7. The bottom of the wine inlet pipe 16 extends into the interior of the silver alloy filter screen 401, thereby extending to the bottom of the filter box 1 through the wine inlet pipe 16 to supply wine into the interior and disperse the impact force of the wine.

[0038] In one embodiment, the filter cleaning assembly 5 includes a cleaning disc 501 inserted through the outside of all the silver-plated columns 402. A wine inlet tube 16 is inserted through one side of the cleaning disc 501. A hydraulic lifting rod 502 is provided at the top of the foreign matter cleaning box 6. The output end of the hydraulic lifting rod 502 passes through the inside of the filter box 1 and is fixedly connected to the cleaning disc 501. Driven by the hydraulic lifting rod 502, it moves up and down along the silver-plated columns 402 to scrape off the attached impurities. When the cleaning disc rises to the top, it forms a closed space with the sealing protrusion tube 19 to prevent impurities from falling back.

[0039] In one embodiment, the control panel 3 is electrically connected to multiple solenoid valves 15 and hydraulic lifting rods 502. The control panel 3 adjusts the flow rate of each filter cartridge through the solenoid valves 15 and sets the cleaning frequency through the hydraulic lifting rods 502. It supports parameter presets such as cleaning cycle and flow threshold to adapt to different brewing processes.

[0040] In one embodiment, for the aforementioned foreign matter cleaning box 6, a liquid inlet 17 is provided on one side of the foreign matter cleaning box 6, a drain outlet 18 is provided on the other side of the foreign matter cleaning box 6, and a sealing protrusion tube 19 is provided at the bottom of the foreign matter cleaning box 6; when the cleaning plate 501 is raised to the top, the top of the cleaning plate 501 is flush with the top of the sealing protrusion tube 19, and the contact surfaces of the cleaning plate 501 with the sealing protrusion tube 19, the wine inlet tube 16 and the silver-plated column 402 are sealed, so that the contact surface between the sealing protrusion tube 19 and the cleaning plate 501 is sealed with a food-grade silicone sealing ring to prevent wine leakage, and the drain outlet 18 and the liquid inlet 17 form a reverse flushing channel to thoroughly remove residue.

[0041] It should be noted that when the foreign matter cleaning box 6 is not being cleaned, the liquid inlets 17 and drain outlets 18 at both ends are closed, and there is no other liquid inside. When cleaning is required, the cleaning disc 501 rises to the top and forms a sealing plane with the sealing protrusion 19. At this time, cleaning liquid is injected into the cleaning disc 501 through the liquid inlet 17 to clean the residue on the top of the cleaning disc 501, which is then discharged through the drain outlet 18 until cleaning is complete and the remaining liquid inside is emptied. At the same time, in order to ensure the quality of the beverage, beverage of the same composition can be introduced into the liquid inlet 17 to clean the surface of the cleaning disc 501 and prevent contamination of the beverage inside the filter box 1.

[0042] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0043] In practical applications, the liquor is connected to the liquor inlet 7 via the liquor inlet pipe and vertically injected into the silver alloy filter screen 401 through the liquor inlet pipe 16. The silver alloy filter screen 401 utilizes its mesh-like micropores (pore size 5-10μm) to coarsely filter the liquor, intercepting large particulate impurities (such as pectin and fermentation residue). Simultaneously, the surface of the silver-plated columns 402 releases silver ions (0.05-0.1mg / L·h), which disrupt the cell membranes of microorganisms and inhibit the reproduction of yeast, lactic acid bacteria, etc., with an antibacterial rate ≥95%. When the liquor passes through the turbulent zone formed by the annular arrangement of the silver-plated columns 402, sulfides, aldehydes, and other odorous substances are adsorbed (adsorption rate ≥85%). The hydraulic lifting rod 502 drives the cleaning disc 501 to periodically move up and down, scraping away impurities on the surface of the silver-plated columns 402 and the inner surface of the silver alloy filter screen 401, preventing filter pore blockage. When the cleaning disc 501 rises to the top, its edge forms a sealed space with the sealing convex tube 19. Residual impurities are discharged through the drain port 18 after being cleaned with cleaning fluid (such as deoxygenated water), avoiding secondary pollution. The pre-filtered liquor is guided to the leakage port 13 through the confluence chute 12 and then distributed to each filter cylinder 9 by the liquor delivery pipe 14. The solenoid valve 15 adjusts the flow rate (0.5-3L / min) according to the preset parameters of the control panel 3 to match the viscosity requirements of different liquors (such as reducing the flow rate when the viscosity of sauce-flavored liquor is >4mPa·s). The filter cylinder 9 is filled with materials such as diatomaceous earth (coarse filtration), activated carbon (adsorbing odors), polymer molecular sieve (removing plasticizers), and PE membrane (0.1μm ultrafiltration) to form a gradient filtration, with an impurity removal rate of ≥98%, and supports quick replacement of filter media (time <10 minutes), adapting to the needs of multiple scenarios such as liquor and fruit wine.

[0044] In summary, by employing the above-mentioned technical solution of this utility model, the dual functions of physical interception and chemical antibacterial are achieved through the use of silver filter components 4. Silver ions are released slowly at a rate of 0.08 mg / L·h, which can destroy the cell membranes of microorganisms such as Escherichia coli and yeast. At the same time, the surface of the silver-plated column 402 adsorbs sulfides, colloidal particles, and higher fatty acid esters in the wine through van der Waals forces. The chemical stability of silver is superior to that of stainless steel, avoiding metal contamination of the wine. This breaks through the limitations of traditional equipment that relies on a single filter material, achieving integrated antibacterial, antifreeze, and flavor protection. The cleaning disc 501 is driven by the hydraulic lifting rod 502 to move up and down periodically along the silver-plated column 402, dynamically scraping impurities from the filter screen surface. The sealed protrusion 19 of the foreign matter cleaning box 6 and the drain port 18 are used to centrally discharge the residue, effectively improving the disassembly and cleaning efficiency. In addition, it supports preset cleaning cycles and flow rate adjustment to adapt to different wine viscosities, solving the pain points of high downtime maintenance frequency and reliance on experience in operation of traditional equipment. The filter cartridge 9 features a detachable design, supporting the filling of various types of filter materials, including diatomaceous earth, activated carbon, and molecular sieves, which not only ensures the impurity removal rate but also improves the efficiency of device cleaning and maintenance.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filtering device for liquor brewing, comprising a filtering box body (1), the bottom end of the filtering box body (1) is provided with a plurality of supporting legs (2), and the end face of the filtering box body (1) is provided with a control panel (3), characterized in that, In order to realize the bacteriostatic, filter and automatic cleaning of foreign matter, the filter box (1) is provided with a silver filter assembly (4) at the middle position inside, the silver filter assembly (4) is provided with a filter screen cleaning assembly (5) inside, the filter box (1) is provided with a foreign matter cleaning box (6) at the top end; The foreign matter cleaning box (6) is provided with a wine injection port (7) at one side of the top end, which is used for injecting wine; A plurality of connecting mounting racks (8) are arranged between the plurality of supporting legs (2), the connecting mounting racks (8) are provided with a plurality of filter cartridges (9) inside, and the filter cartridges (9) are provided with wine outlet ports (10) at the bottom ends.

2. The filtering device for brewing alcoholic beverages according to claim 1, characterized in that, The filter box (1) is provided with a filter screen mounting boss (11) at the middle position of the inner bottom, the inner bottom of the filter box (1) is provided with a plurality of flow converging inclined grooves (12) around the filter screen mounting boss (11), and the inner bottom of the flow converging inclined grooves (12) is provided with wine leakage ports (13).

3. The filtering device for brewing alcoholic beverages according to claim 2, characterized in that, The filter cartridges (9) are provided with wine conveying pipes (14) matched with the wine leakage ports (13) at the top ends, and in order to control the opening and closing and flow rate of wine flowing from the filter box (1) into the filter cartridges (9), the wine conveying pipes (14) are provided with electromagnetic valves (15).

4. The filtering device for brewing alcoholic beverages according to claim 2, characterized in that, The silver filter assembly (4) comprises a silver alloy filter screen cover (401) arranged at the top of the filter screen mounting boss (11), a plurality of silver-plated columns (402) are arranged at the circumferential inner edge of the silver alloy filter screen cover (401) in a ring shape, which are used for intercepting and adsorbing foreign matters in wine.

5. The filtering device for brewing alcoholic beverages according to claim 4, characterized in that, The foreign matter cleaning box (6) is provided with a wine injection pipe (16) communicated with the wine injection port (7) at the top inside, and the wine injection pipe (16) penetrates into the inside of the silver alloy filter screen cover (401) at the bottom.

6. The filtering device for brewing alcoholic beverages according to claim 5, characterized in that, The filter screen cleaning assembly (5) comprises a cleaning disc (501) penetrating outside all the silver-plated columns (402), the cleaning disc (501) is provided with the wine injection pipe (16) at one side, the foreign matter cleaning box (6) is provided with a hydraulic lifting rod (502) at the top end, and the output end of the hydraulic lifting rod (502) penetrates into the inside of the filter box (1) and is fixedly connected with the cleaning disc (501).

7. The filtering device for brewing alcoholic beverages according to claim 6, characterized in that, The control panel (3) is electrically connected with the plurality of electromagnetic valves (15) and the hydraulic lifting rod (502) respectively.

8. The filtering device for brewing alcoholic beverages according to claim 6, characterized in that, One side of the foreign matter cleaning box (6) is provided with a liquid inlet (17), the other side of the foreign matter cleaning box (6) is provided with a sewage outlet (18), and the inner bottom of the foreign matter cleaning box (6) is provided with a sealing convex pipe (19). When the cleaning disc (501) is raised to the top end, the top end of the cleaning disc (501) is flush with the top end of the sealing convex pipe (19), and the contact surfaces of the cleaning disc (501), the sealing convex pipe (19), the wine injection pipe (16) and the silver-plated columns (402) are sealed.

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