A filtration device for the discharge of soy sauce-flavored baijiu (Chinese liquor)

By setting filter holes at the bottom and sides of the wastewater filtration tank in the production of Maotai-flavor liquor, the problem of small filtration area of ​​perforated slag-blocking nets is solved, achieving high-flow filtration without clogging, reducing cleaning frequency and weld detachment, and the structure is simple and easy to clean.

CN224585459UActive Publication Date: 2026-08-04GUIZHOU MOUTAI WINERY GRP XIJIU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIZHOU MOUTAI WINERY GRP XIJIU CO LTD
Filing Date
2025-08-04
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

In the current production of Maotai-flavor liquor, the small filtration area of ​​the perforated slag-blocking mesh leads to slow filtration speed, easy clogging, frequent cleaning, and welding detachment.

Method used

Filter holes are set at the bottom and sides of the sewage filter tank to form multiple filter ports. The combination of bottom and side filtration increases the filtration area and prevents clogging. The filter tank is then welded to the drain pipe as a whole.

Benefits of technology

It achieves high-flow-rate sewage filtration without clogging, reduces cleaning frequency, avoids weld detachment, has a simple structure, and is easy to clean solids.

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Abstract

This application relates to a wastewater filtration device for Maotai-flavor liquor, comprising: a wastewater filtration tank for filtering solids from the bottom pot water; and a wastewater discharge pipe for discharging the filtered bottom pot water, the wastewater discharge pipe being positioned below the wastewater filtration tank with a partial overlap between them; wherein the upper surface of the wastewater discharge pipe is open, the wastewater filtration tank has bottom filter holes in the bottom area overlapping with the wastewater discharge pipe, and the wastewater filtration tank has side filter holes on the sides corresponding to the open area on the upper surface of the wastewater discharge pipe. This application integrates drainage and filtration by providing filter holes at the bottom and sides of the wastewater filtration tank, resulting in a large effective filtration area, fully adaptable to large volumes of wastewater discharge, and preventing clogging due to slow discharge speed.
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Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology for liquor production, and in particular to a filtration device for wastewater discharge from Maotai-flavor liquor. Background Technology

[0002] The brewing process of baijiu (Chinese liquor) includes steaming the grains, which is done using a still placed on a bottom pot of water. During steaming, some grains and lees inevitably fall into the bottom pot. When the water in the bottom pot is changed to ensure the quality of the distillation, the grains and lees that have fallen into the bottom pot are discharged along with the water into the sewage network or treatment system. In existing technology, to prevent the grains and lees from accumulating in the bottom pot water and causing blockages in the sewage network or treatment system, filters are usually installed to filter the water and remove the grains and lees. Existing filters are typically perforated screens placed at the drain outlet of the filter tank. Due to the large volume of water discharged from baijiu production, the small filtration area of ​​these perforated screens results in slow filtration and easy clogging. Furthermore, the perforated screens are welded to the filter tank, and due to the frequent clogging during production, workers need to clean the screens frequently, which can lead to weld detachment.

[0003] Therefore, it is necessary to design a filtration device for the discharge of soy sauce-flavored liquor to solve the above-mentioned technical problems. Utility Model Content

[0004] Based on this, a wastewater filtration device for Maotai-flavor liquor is provided, which has filter holes for both drainage and filtration at the bottom and sides of the wastewater filtration tank. This device can fully accommodate large amounts of wastewater discharge and prevent clogging caused by slow discharge speed.

[0005] To address the above problems, this application provides a wastewater filtration device for Maotai-flavor liquor, comprising: a wastewater filtration tank for filtering solids in the bottom pot water; and a wastewater discharge pipe for discharging the filtered bottom pot water, the wastewater discharge pipe being disposed below the wastewater filtration tank with a partial overlap between them; wherein the upper surface of the wastewater discharge pipe is open, the wastewater filtration tank has bottom filter holes in the bottom area overlapping with the wastewater discharge pipe, and the wastewater filtration tank has side filter holes on the side corresponding to the open area on the upper surface of the wastewater discharge pipe.

[0006] A preferred solution is that the sewage discharge pipe and the sewage filter tank are integrally welded in the overlapping area.

[0007] A preferred embodiment is that the bottom filter holes are arranged in an array at the bottom of the wastewater filter tank; and the side filter holes are arranged in an array on the sides of the wastewater filter tank.

[0008] A preferred embodiment is that both the bottom filter holes and the side filter holes are arranged in a rectangular array.

[0009] A preferred embodiment is that the diameter of the bottom filter holes and / or the side filter holes is set to 2-3 mm.

[0010] A preferred embodiment is that the opening of the wastewater filter tank is open, and a cover plate is provided at the opening of the wastewater filter tank.

[0011] A preferred embodiment is that the lower surface of the cover plate is provided with a limiting barrier, which is used to abut against the inner wall of the sewage filtration tank.

[0012] A preferred embodiment is that the cover plate is provided with a pull ring, the length of which is set to 100-150mm.

[0013] A preferred embodiment is that the wastewater filter tank, the wastewater discharge pipe, the cover plate, and the pull ring are all made of stainless steel.

[0014] This application has at least the following beneficial effects:

[0015] In existing technologies, a perforated slag-blocking screen is installed at the drain outlet on one side of the wastewater filtration tank for filtration. The water from the bottom pot is first filtered through the perforated slag-blocking screen before being discharged through the drain outlet. Due to the large volume of water discharged from Maotai-flavor liquor, the above method only has one drain outlet and a perforated slag-blocking screen at the drain outlet. The small filtration area of ​​the perforated slag-blocking screen results in a slow filtration speed and a tendency to clog. Therefore, this application provides a Maotai-flavor liquor wastewater filtration device that integrates the drain outlet of the wastewater filtration tank and the perforated slag-blocking screen into one unit. Bottom filtration holes are opened in the overlapping area between the bottom of the wastewater filtration tank and the wastewater discharge pipe, and side filtration holes are opened on the side inside the wastewater discharge pipe. The bottom filtration holes and side filtration holes not only filter the water from the bottom pot but also function as the original drain outlet. Furthermore, both filter the water from the bottom pot simultaneously, resulting in a large effective filtration area that can fully accommodate large volumes of wastewater discharge and prevent clogging caused by slow discharge speed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a filtration device for the discharge of Maotai-flavor liquor in this embodiment;

[0017] Figure 2 For along Figure 1 Top view of section AA in the image;

[0018] Figure 3 This is a left view of a filtration device for the discharge of soy sauce-flavored liquor in this embodiment;

[0019] Figure 4 This is a top view of a filtration device for discharging pollutants from a type of soy sauce-flavored liquor in this embodiment.

[0020] Attached reference numerals: 1. Wastewater filter tank; 2. Wastewater discharge pipe; 3. Overlapping area; 4. Bottom filter hole; 5. Side filter hole; 6. Cover plate; 7. Limiting barrier; 8. Pull ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] This application provides a wastewater filtration device for Maotai-flavor liquor. The device has a simple structure, integrating the drain outlet of the wastewater filtration tank and the perforated slag-blocking net into one unit. Filter holes are opened at the bottom and sides of the wastewater filtration tank. These filter holes not only filter the water in the bottom pot but also serve as the original drain outlets. Therefore, it is equivalent to having multiple drain outlets and filtering simultaneously from the bottom and sides. The effective filtration area is large, which can fully adapt to the discharge of large amounts of wastewater, preventing blockages caused by slow discharge speed. It also avoids the situation where workers had to frequently clean the slag-blocking net due to frequent blockages, which could lead to weld detachment.

[0025] The following is a detailed description of the wastewater filtration device for Maotai-flavor liquor provided in this embodiment, with reference to the accompanying drawings. Figures 1-3As shown, the system includes a wastewater filter tank 1 and a wastewater discharge pipe 2. The wastewater filter tank 1 is mainly used to filter solids in the bottom pot water, and the wastewater discharge pipe 2 is mainly used to discharge the filtered bottom pot water. The wastewater discharge pipe 2 is located below the wastewater filter tank 1, and there is a partial overlap area 3 between the two. The upper surface of the wastewater discharge pipe 2 is open. The wastewater filter tank 1 has bottom filter holes 4 in the bottom area overlapping with the wastewater discharge pipe 2, and the wastewater filter tank 1 has side filter holes 5 on the sides corresponding to the open area on the upper surface of the wastewater discharge pipe 2. It should be noted that the upper surface of the wastewater discharge pipe 2 can also be partially open, as long as it ensures that the bottom pot water filtered by the bottom filter holes 4 and the bottom pot water filtered by the side filter holes 5 are discharged into the wastewater discharge pipe 2.

[0026] In this embodiment, the sewage filter tank 1 and the bottom sewage discharge pipe 2 are configured to have a certain overlapping area 3. Bottom filter holes 4 are provided in the overlapping area 3 between the bottom of the sewage filter tank 1 and the sewage discharge pipe 2, and side filter holes 5 are provided on the side of the open area on the upper surface of the sewage discharge pipe 2. Both the bottom filter holes 4 and the side filter holes 5 serve to filter the water in the bottom pot, and also act as the original drain outlet. The filtered water in the bottom pot is discharged into the sewage discharge pipe 2 from the bottom and side of the sewage filter tank 1. In other words, the original sewage filter tank 1 is additionally positioned at the drain outlet. The installation method of a perforated slag-blocking net has been adjusted to integrate bottom filter holes 4 at the bottom of the sewage filter tank 1 and side filter holes 5 on the side. In this way, it is equivalent to having multiple drainage outlets and filtering from the bottom and sides at the same time. The effective filtration area is large and can fully adapt to large amounts of sewage discharge, preventing blockages caused by slow discharge speed. It also avoids the previous situation where workers had to clean the slag-blocking net frequently due to frequent blockages, which could lead to weld detachment. In addition, the sewage discharge filtration device has a simple structure, which makes it easy to clean solids from the sewage filter tank 1 during the production of Maotai-flavor liquor.

[0027] Please refer to Figure 1 and Figure 2As shown in this embodiment, it should be noted that the sewage filter tank 1 is a rectangular trench with an open upper surface. An external pipe can be connected to the right side of the sewage filter tank 1 for introducing water into the bottom pot. The sewage discharge pipe 2 is a cuboid pipe with an open upper surface. The left side of the sewage discharge pipe 2 can be connected to a sewage network, or connected to a sewage network via another pipe. The sewage discharge pipe 2 is positioned close to the bottom of the sewage filter tank 1. When the sewage discharge pipe 2 and the sewage filter tank 1 overlap vertically, the left side of the sewage filter tank 1 is located within the open area above the sewage discharge pipe 2, and the right side of the sewage filter tank 1 is located outside the area of ​​the sewage discharge pipe 2. Furthermore, the sewage discharge pipe 2 and the sewage filter tank 1 are integrally welded in the overlapping area 3. Specifically, the top side of the sewage discharge pipe 2 is welded to the bottom perimeter of the sewage filter tank 1. It should be noted that the width of the sewage filter tank 1 can be set between 200-300mm, and the height can be set between 200-400mm.

[0028] Please refer to Figures 1-3 As shown in this embodiment, it should also be noted that the bottom filter holes 4 are arranged in an array at the bottom of the sewage filter tank 1, and similarly, the side filter holes 5 are arranged in an array on the left side of the sewage filter tank 1. The arrayed bottom filter holes 4 and side filter holes 5 can effectively filter solids in the bottom pot water. Simultaneous bottom and side filtration also accommodates large volumes of sewage discharge, preventing clogging due to slow discharge speed. Preferably, both the bottom filter holes 4 and side filter holes 5 are arranged in a rectangular array, which is regular and provides a larger effective filtration area.

[0029] In one feasible approach, the pore size of the bottom filter holes 4 and / or the side filter holes 5 is set to 2-3 mm. This size of pore can trap solids in the water in the bottom pot without affecting the drainage of the water.

[0030] Please refer to Figure 1 and Figure 4 As shown in this embodiment, it should also be noted that the opening of the sewage filter tank 1 is open. Therefore, a suitable cover plate 6 is provided at the opening of the sewage filter tank 1. The cover plate 6 is a complete rectangular plate, and its size is slightly larger than the opening of the sewage filter tank 1. This arrangement can ensure that the cover plate 6 can completely cover the opening of the sewage filter tank 1. The opening of the sewage filter tank 1 can be sealed by the cover plate 6 to prevent impurities from falling in and to prevent sewage from splashing out. When it is necessary to clean the fixed objects inside, the cover plate 6 can be moved away.

[0031] In one feasible implementation, a rectangular retaining ring 7 is fixedly connected to the lower surface of the cover plate 6. The retaining ring 7 is used to abut against the inner wall of the sewage filter tank 1 when the cover plate 6 is covering the opening of the sewage filter tank 1. By abutting against the inner wall of the sewage filter tank 1 with the retaining ring 7, the cover plate 6 will not easily move laterally. It should be noted that the width of the retaining ring 7 should be slightly smaller than the width of the sewage filter tank 1.

[0032] In one feasible embodiment, a pull ring 8 is welded to the center of the upper surface of the cover plate 6. The pull ring 8 facilitates the opening of the cover plate 6. When it is necessary to clean the solid debris collected in the sewage filter tank 1, the pull ring 8 makes it easier and less labor-intensive to open the cover plate 6. Preferably, the length of the pull ring 8 is set to 100-150mm and the thickness is 3mm.

[0033] In this embodiment, it should also be noted that the sewage filter tank 1, sewage discharge pipe 2, cover plate 6, limiting barrier 7 and pull ring 8 are all made of 304 stainless steel. With this material, the device is sturdy and tough, not easily damaged during use, and has a low maintenance rate.

[0034] The implementation principle of this embodiment is as follows: Boiled water enters the wastewater filtration tank 1 through a pipe, where it is filtered. After passing through the bottom filter holes 4, the water flows from the bottom into the wastewater discharge pipe 2. Simultaneously, it also passes through the side filter holes 5 and flows from the side into the wastewater discharge pipe 2. The filtered water can then be discharged through the wastewater discharge pipe 2 into the wastewater network or into other secondary treatment equipment for recycling. In this filtration process, the wastewater filtration tank 1 is equipped with both the bottom filter holes 4 and the side filter holes 5, integrating filtration and drainage functions. Filtration occurs from different directions, resulting in a large effective filtration area that can fully accommodate large volumes of wastewater discharge, preventing blockages caused by slow discharge rates.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A filtration device for the discharge of sludge from a type of soy sauce-flavored liquor, characterized in that, include: Wastewater filter tank (1), the wastewater filter tank (1) is used to filter solids in the bottom pot water; Wastewater discharge pipe (2) is used to discharge filtered bottom pot water. The wastewater discharge pipe (2) is located below the wastewater filter tank (1), and there is a partial overlap area (3) between the two. The upper surface of the sewage discharge pipe (2) is open, the sewage filter tank (1) has bottom filter holes (4) in the bottom area overlapping with the sewage discharge pipe (2), and the sewage filter tank (1) has side filter holes (5) on the side corresponding to the open area on the upper surface of the sewage discharge pipe (2).

2. The filtration device for the discharge of soy sauce-flavored liquor according to claim 1, characterized in that, The sewage discharge pipe (2) and the sewage filter tank (1) are integrally welded in the overlapping area.

3. The filtration device for the discharge of soy sauce-flavored liquor according to claim 1, characterized in that, The bottom filter holes (4) are arranged in an array at the bottom of the sewage filter tank (1); The side filter holes (5) are arranged in an array on the side of the sewage filter tank (1).

4. The filtration device for the discharge of soy sauce-flavored liquor according to claim 3, characterized in that, The bottom filter holes (4) and the side filter holes (5) are both arranged in a rectangular array.

5. The filtration device for the discharge of soy sauce-flavored liquor according to claim 3 or 4, characterized in that, The aperture of the bottom filter hole (4) and / or the side filter hole (5) is set to 2-3 mm.

6. The filtration device for the discharge of soy sauce-flavored liquor according to claim 1, characterized in that, The opening of the wastewater filter tank (1) is open, and a cover plate (6) is provided at the opening of the wastewater filter tank (1).

7. The filtration device for the discharge of soy sauce-flavored liquor according to claim 6, characterized in that, The lower surface of the cover plate (6) is provided with a ring of limiting barriers (7), which are used to abut against the inner wall of the sewage filter tank (1).

8. The filtration device for the discharge of soy sauce-flavored liquor according to claim 6, characterized in that, The cover plate (6) is provided with a pull ring (8), and the length of the pull ring (8) is set to 100-150mm.

9. The filtration device for the discharge of soy sauce-flavored liquor according to claim 8, characterized in that, The sewage filter tank (1), the sewage discharge pipe (2), the cover plate (6) and the pull ring (8) are all made of stainless steel.