A screening device for white spirit base production

Abstract

The utility model provides a kind of screening equipment for liquor base material production, belong to liquor processing field, including the screening box for carrying out screening to liquor base material, screening mechanism is equipped on screening box for removing impurity screening to sorghum, screening mechanism is constituted by disturbing subassembly and removing impurity subassembly;Disturbing subassembly includes the horizontal push module for disturbing water surface and the turning module for disturbing water bottom material;Horizontal push module and turning module are set on the box of one side of screening box by extension platform, horizontal push module includes circulating water pump installed on extension platform, and booster water tank is set on the box of one side of screening box;The utility model can remove impurity in liquor base material by screening mechanism, and remove impurity using impurity removal subassembly therein, avoid that still more impurity remains in base material, affect the final quality of liquor.

Description

Technical Field

[0001] This utility model relates to the field of liquor processing, specifically to a screening device for liquor base material production. Background Technology

[0002] Baijiu, a traditional Chinese alcoholic beverage, boasts a long history and profound cultural heritage. In the production process of baijiu, the quality of the base materials plays a crucial role in its overall quality. Sorghum, as one of the essential raw materials for baijiu, directly influences the taste, aroma, and quality of the liquor through its purity and quality.

[0003] However, during the harvesting, transportation, and storage of sorghum, various impurities, such as soil, sand, straw, and shriveled grains, inevitably get mixed in. These impurities not only affect the brewing process and quality of baijiu (Chinese liquor), but may also cause adverse chemical reactions during brewing, leading to problems such as a deteriorated taste and impure aroma. Therefore, effective screening and impurity removal of sorghum are essential steps in the production of baijiu base materials.

[0004] Traditional sorghum screening methods mainly include air separation, screening, and water separation. Air separation uses wind power to blow away lighter impurities, but it is not very effective for impurities that are similar in size to sorghum particles. Screening separates sorghum and impurities using sieves with different mesh sizes, but it is difficult to completely remove some fine impurities and soil adhering to the surface of the sorghum. Water separation uses the difference in buoyancy between sorghum and impurities in water to remove impurities floating on the surface, but this method has problems such as low screening efficiency, difficulty in fully disturbing the material at the bottom of the water, and incomplete screening.

[0005] Currently available baijiu base material screening equipment has certain shortcomings in terms of impurity removal effect, screening efficiency, and automation. Some equipment cannot effectively and thoroughly screen sorghum, resulting in a significant amount of impurities remaining in the base material, affecting the final quality of the baijiu. Moreover, existing screening equipment involves complex operations and high energy consumption during the material agitation and impurity removal process, increasing production costs.

[0006] Therefore, developing a screening device that can efficiently and thoroughly screen and remove impurities from baijiu base materials, while also being easy to operate and having low energy consumption, is of great practical significance. Utility Model Content

[0007] In view of this, the present invention provides a screening device for the production of liquor base material. The screening mechanism turns over the impurities present in the liquor base material and removes the impurities using the impurity removal component, so as to avoid the presence of a large number of impurities in the base material, which would affect the final quality of the liquor.

[0008] To solve the above-mentioned technical problems, this utility model provides a screening device for the production of baijiu base materials, including a screening box for screening baijiu base materials. The screening box is equipped with a screening mechanism for removing impurities from sorghum. The screening mechanism consists of a disturbance component and an impurity removal component. The disturbance component includes a horizontal pushing module for disturbing the water surface and a turning module for disturbing the material at the bottom of the water. The horizontal pushing module and the turning module are set on a box body on one side of the screening box through an extension platform. The horizontal pushing module includes a circulating water pump installed on the extension platform and a pressurized water tank set on a box body on one side of the screening box.

[0009] That is, by constructing a complete overall architecture for baijiu base material screening equipment, the screening process is decomposed into two key stages: disturbance and impurity removal. This provides a systematic design approach for achieving efficient and comprehensive baijiu base material screening, which helps to improve the quality and efficiency of baijiu base material screening.

[0010] A first pumping pipe is connected between the input end of the circulating water pump and the screening box. A water delivery pipe is connected between the output end of the circulating water pump and the booster water tank. Several outlet pipes are connected between the booster water tank and the screening box, and the outlet pipes are flush with the water surface in the screening box.

[0011] Specifically, the connection structure of the horizontal push module is described, clarifying the connection relationships between the circulating water pump, the first pumping pipe, the delivery pipe, the booster tank, and the outlet pipe, as well as the positional relationship between the outlet pipe and the water surface inside the screening box. Through this connection structure, the circulating water pump can draw water out of the screening box, pressurize it in the booster tank, and then discharge it through the outlet pipe. Since the outlet pipe is flush with the water surface, it can effectively disturb the water surface. This disturbance of the water surface can move impurities floating on the water surface with the water flow, facilitating subsequent impurity removal operations and improving the efficiency of impurity removal.

[0012] The flipping module includes a high-pressure water pump installed on the expansion platform and a fluid pipe installed at the bottom of the screening box. A second water pump is connected between the input end of the high-pressure water pump and the screening box. One end of the fluid pipe passes through the screening box and is connected to the output end of the high-pressure water pump.

[0013] That is, a high-pressure water pump draws water from the screening box through a second water pipe and delivers the water to a fluid pipe installed at the bottom of the screening box. This agitates the material at the bottom of the water, separating impurities deposited at the bottom from the sorghum, preventing impurities from adhering to the sorghum, improving the purity of the sorghum, and further enhancing the screening effect.

[0014] Several water distribution pipes are connected to the fluid pipe, and each water distribution pipe is equipped with several nozzles. In addition, an air guide pipe is connected to the fluid pipe body located at the bottom of the expansion platform, and a one-way air valve is connected to the end of the air guide pipe.

[0015] In other words, the water distribution pipe and nozzles allow the water flowing from the fluid pipe to be more widely dispersed to the bottom of the screening box, enhancing the disturbance effect on the bottom material. The presence of the air guide pipe and one-way air valve allows gas to be injected into the fluid pipe when needed. The gas mixes with the water to form an air-water mixture, which is then sprayed out from the nozzle, generating a stronger impact force and more effectively separating impurities from the sorghum, thus improving the screening quality.

[0016] The impurity removal component includes an impurity trough located on one side of the screening box. An auger conveyor is connected inside the impurity trough. The auger conveyor includes a drive motor mounted on the outer side plate of the impurity trough and a rotating shaft rotatably mounted inside the impurity trough. One end of the rotating shaft passes through the side plate of the impurity trough and is connected to the output shaft of the drive motor via a coupling. Two sets of spiral blades are symmetrically arranged on the rotating shaft, and the thread directions of each set of spiral blades are opposite.

[0017] In other words, when impurities on the water surface move into the debris trough with the water flow, the auger conveyor starts working. The drive motor rotates the shaft, and because the two sets of symmetrically arranged spiral blades on the shaft have opposite thread directions, they can transport the impurities towards the center of the debris trough, facilitating subsequent collection and processing. This design can efficiently separate impurities from the screening box, reducing the impact of impurities on the production of baijiu base materials.

[0018] The bottom of the waste trough is connected to a sewage trough. Several drainage holes are provided between the waste trough and the sewage trough to drain the sewage inside the waste trough. The diameter of the drainage holes is smaller than the size of the sorghum grains. The bottom of the sewage trough is connected to a drain pipe.

[0019] In other words, the drainage holes allow wastewater from the debris trough to flow into the wastewater trough, while the smaller diameter of the drainage holes prevents sorghum grains from entering the wastewater trough. The wastewater is then discharged through the drainage pipe, achieving wastewater separation and discharge, maintaining the cleanliness of the screening equipment, and improving the hygiene and stability of the screening process.

[0020] The bottom of the debris trough is connected to a debris outlet, which is located at the center of the two sets of spiral blades.

[0021] That is, the debris outlet is set at the center of the two sets of spiral blades, so that the debris conveyed to the center by the auger conveyor can be smoothly discharged from the debris outlet, which facilitates the centralized treatment of impurities and improves the convenience and efficiency of the impurity removal operation.

[0022] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0023] 1. The horizontal push module, through a circulating water pump, booster tank, first pumping pipe, delivery pipe, and outlet pipe, creates a horizontal thrust on the water surface, agitating it and effectively moving floating impurities. The turning module uses a high-pressure water pump, fluid pipe, and second pumping pipe to agitate the material at the bottom of the water. Furthermore, the fluid pipe is equipped with a water distribution pipe and nozzles, expanding the water jet range and further enhancing the agitation effect on the bottom material. Through the cooperation of these two modules, a comprehensive agitation is achieved from both the surface and bottom, ensuring thorough separation of sorghum from impurities and significantly improving the comprehensiveness and thoroughness of the screening process.

[0024] 2. When the high-pressure water pump is working, air can be introduced into the fluid pipe to mix with water, forming an air-water mixture that is sprayed out from the nozzle of the water distribution pipe. Compared with simple water jet spray, this air-water mixed spray method can generate a greater impact force and stirring effect, which can better agitate the sorghum and impurities at the bottom of the water, further promoting the separation of sorghum and impurities and improving screening efficiency.

[0025] 3. When the drive motor rotates the shaft, two sets of spiral blades push debris towards the central debris outlet, achieving efficient impurity collection. Simultaneously, a wastewater tank is connected to the bottom of the debris tank; the drainage holes between them allow wastewater to drain from the debris tank. The diameter of the drainage holes is smaller than the size of the sorghum grains, preventing their loss. The wastewater is discharged through a drain pipe, effectively separating impurities from wastewater for easier subsequent processing.

[0026] 4. The agitation and impurity removal components are located on one side of the screening box via an extension platform, with components such as the circulating water pump, high-pressure water pump, and drive motor arranged in a reasonable layout. This layout not only facilitates equipment installation and maintenance but also allows operators to easily control each power unit during operation, achieving automated operation of the entire screening process, reducing manual labor intensity, and improving production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the screening equipment for producing liquor base materials according to this utility model;

[0028] Figure 2 This is a side view of the overall structure of this utility model;

[0029] Figure 3 This is a top view of the overall structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the overall structure of the present invention from the left view.

[0031] Figure 5 This is a cross-sectional view of the internal structure of this utility model.

[0032] Explanation of reference numerals in the attached drawings: 1. Screening box; 2. Screening mechanism; 21. Disturbance component; 211. Expansion platform; 212. Horizontal push module; 2121. Circulating water pump; 2122. Booster water tank; 2123. First water pumping pipe; 2124. Water outlet pipe; 2125. Water delivery pipe; 213. Tilting module; 2131. High-pressure water pump; 2132. Second water pumping pipe; 2133. Fluid pipe; 2134. Water distribution pipe; 2135. Nozzle; 2136. Air guide pipe; 2137. One-way air valve; 22. Impurity removal component; 221. Impurity trough; 222. Screw conveyor equipment; 2221. Drive motor; 2222. Rotating shaft; 2223. Spiral blade; 223. Sewage tank; 224. Drain pipe; 225. Drain hole; 226. Impurity outlet. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0034] like Figures 1-5 As shown: This embodiment provides a screening device for the production of baijiu base materials, including a screening box 1 for screening baijiu base materials. The screening box 1 is equipped with a screening mechanism 2 for removing impurities from sorghum. The screening mechanism 2 consists of a disturbance component 21 and an impurity removal component 22. The disturbance component 21 includes a horizontal pushing module 212 for disturbing the water surface and a turning module 213 for disturbing the material at the bottom of the water. The horizontal pushing module 212 and the turning module 213 are set on a box body on one side of the screening box 1 through an extension platform 211. The horizontal pushing module 212 includes a circulating water pump 2121 installed on the extension platform 211 and a pressurized water tank 2122 set on a box body on one side of the screening box 1.

[0035] The sorghum is effectively screened and impurities removed by the coordinated operation of the agitation component 21 and the impurity removal component 22. The horizontal pushing module 212 and the tumbling module 213 agitate the mixture of sorghum and water from the water surface and bottom, respectively, breaking the adhesion between the sorghum and impurities, allowing the impurities to be better separated, and creating favorable conditions for the subsequent operation of the impurity removal component 22. The circulating water pump 2121 and the booster water tank 2122 are the core components of the horizontal pushing module 212. Through their mutual cooperation, they provide power for the agitation of the water surface.

[0036] like Figure 2 , Figure 3 and Figure 4As shown: The input end of the circulating water pump 2121 is connected to the screening box 1 through the first water pumping pipe 2123, and its output end is connected to the booster water tank 2122 through the water supply pipe 2125. The booster water tank 2122 is connected to the screening box 1 through several water outlet pipes 2124, and the water outlet pipes 2124 are flush with the water surface in the screening box 1.

[0037] After the circulating water pump 2121 starts, it draws water from the screening box 1 through the first pumping pipe 2123, and then delivers the water to the booster tank 2122 through the delivery pipe 2125. The booster tank 2122 pressurizes the water, giving it a certain pressure. Since the outlet pipe 2124 is flush with the water surface, the pressurized water is sprayed from the outlet pipe 2124 at a certain speed onto the water surface in the screening box 1, creating a lateral water flow thrust. This water flow thrust can push impurities floating on the water surface to move in a specific direction, such as towards the impurity removal component 22, thereby achieving preliminary cleaning of impurities on the water surface.

[0038] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown: The flipping module 213 includes a high-pressure water pump 2131 mounted on the expansion platform 211 and a fluid pipe 2133 installed at the bottom of the screening box 1. The input end of the high-pressure water pump 2131 is connected to the screening box 1 through a second water pumping pipe 2132, and one end of the fluid pipe 2133 passes through the screening box 1 and is connected to the output end of the high-pressure water pump 2131.

[0039] When the high-pressure water pump 2131 is working, it draws water from the screening box 1 through the second water pumping pipe 2132 and then transports the water to the fluid pipe 2133. The water enters the bottom of the screening box 1 from the fluid pipe 2133, impacting and agitating the sorghum material at the bottom. Since the sorghum at the bottom may accumulate together and impurities easily adhere to the surface of the sorghum, this agitation can fully stir the sorghum in the water, breaking the binding force between the sorghum and impurities, separating the impurities adhering to the surface of the sorghum, and at the same time, allowing the sorghum to be more evenly distributed in the water, thus improving the screening effect.

[0040] like Figure 5 As shown: Several water distribution pipes 2134 are connected to the fluid pipe 2133, and several nozzles 2135 are provided on each water distribution pipe 2134. An air guide pipe 2136 is connected to the fluid pipe 2133 at the bottom of the expansion platform 211, and a one-way air valve 2137 is connected to the end of the air guide pipe 2136.

[0041] After the high-pressure water pump 2131 delivers water to the fluid pipe 2133, the water is distributed to the nozzles 2135 through the water distribution pipe 2134. The function of the nozzles 2135 is to spray the water in a more dispersed manner towards the bottom of the screening box 1, enhancing the agitation effect on the sorghum at the bottom of the water. The air guide pipe 2136 and the one-way air valve 2137 are designed to introduce air. When the high-pressure water pump 2131 is working, a certain negative pressure is formed in the fluid pipe 2133, and air enters the air guide pipe 2136 through the one-way air valve 2137, and then mixes with water in the fluid pipe 2133. This air-water mixture is sprayed out from the nozzles 2135, which further enhances the agitation of the sorghum, because the air bubbles generate additional impact force and stirring effect as they rise and burst in the water, making it easier for impurities to separate from the sorghum.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown: The impurity trough 221 of the impurity removal component 22 is located on one side of the screening box 1. An auger conveyor 222 is installed inside the impurity trough 221. The auger conveyor 222 consists of a drive motor 2221 mounted on the outer side plate of the impurity trough 221 and a rotating shaft 2222 rotatably mounted inside the impurity trough 221. One end of the rotating shaft 2222 passes through the side plate of the impurity trough 221 and is connected to the output shaft of the drive motor 2221 through a coupling. Two sets of spiral blades 2223 with opposite thread directions are symmetrically arranged on the rotating shaft 2222.

[0043] After the horizontal push module 212 pushes impurities on the water surface into the debris tank 221, the drive motor 2221 starts, driving the rotating shaft 2222 to rotate. Because the two sets of spiral blades 2223 on the rotating shaft 2222 have opposite thread directions, as the shaft rotates, the two sets of spiral blades 2223 push the impurities entering the debris tank 221 towards the center. This design allows impurities to concentrate in a specific area, facilitating subsequent discharge and achieving effective collection and cleaning of impurities.

[0044] like Figure 2 and Figure 3 As shown: The bottom of the debris trough 221 is connected to the sewage trough 223. Several drainage holes 225 are opened between the debris trough 221 and the sewage trough 223. The diameter of the drainage holes 225 is smaller than the size of the sorghum grains. The bottom of the sewage trough 223 is connected to the drainage pipe 224.

[0045] Within the debris trough 221, a certain amount of wastewater accumulates as impurities are collected. Due to the presence of the drain hole 225, the wastewater in the debris trough 221 flows into the wastewater trough 223. Because the aperture of the drain hole 225 is smaller than the size of the sorghum grains, the sorghum grains will not flow into the wastewater trough 223 along with the wastewater, ensuring the screening quality of the sorghum. The wastewater flowing into the wastewater trough 223 is discharged from the equipment through the drain pipe 224, maintaining the cleanliness of the equipment's interior and facilitating centralized wastewater treatment.

[0046] like Figure 3 and Figure 5 As shown: The bottom of the debris trough 221 is connected to the debris outlet 226, and the debris outlet 226 is located at the center of the two sets of spiral blades 2223.

[0047] Because the two sets of spiral blades 2223 of the auger conveyor 222 push impurities towards the center, the impurities gradually concentrate at the center of the two sets of spiral blades 2223. The impurity outlet 226 is located at this center. When the impurities accumulate to a certain extent, they will be discharged from the impurity trough 221 through the impurity outlet 226, achieving efficient discharge of impurities, preventing impurities from accumulating in the impurity trough 221, and ensuring the continuous and stable operation of the impurity removal component 22.

[0048] The method of using this invention is as follows: Add an appropriate amount of water and sorghum to be screened to the screening box 1, and start the various components of the screening equipment. The horizontal pushing module 212 and the turning module 213 in the agitation component 21 agitate the sorghum material on the water surface and bottom, respectively, causing impurities in the sorghum to separate from the sorghum and suspend or float in the water. The impurity removal component 22 collects the separated impurities and discharges them from the screening box 1, thereby completing the screening of the liquor base material.

[0049] I. Working principle of disturbance component 21:

[0050] Horizontal Push Module 212: After the circulating water pump 2121 starts, it draws water from the screening box 1 through the first water suction pipe 2123. The drawn water is transported to the booster water tank 2122 through the water delivery pipe 2125. The booster water tank 2122 pressurizes the water to provide sufficient pressure for subsequent water jetting. The pressurized water is sent back to the screening box 1 through several water outlet pipes 2124. Since the water outlet pipes 2124 are flush with the water surface in the screening box 1, the water sprayed out from the water outlet pipes 2124 will form a horizontal water flow on the water surface. This water flow will push the impurities floating on the water surface (such as light impurities, dust, shriveled sorghum, etc.) towards the debris trough 221, facilitating subsequent impurity removal operations.

[0051] Turning Module 213: The high-pressure water pump 2131 starts, drawing water from the screening box 1 through the second water pumping pipe 2132, and delivering the water to the fluid pipe 2133 installed at the bottom of the screening box 1. After entering the fluid pipe 2133, the water is sprayed out through several branch pipes 2134 connected to the fluid pipe 2133 and several nozzles 2135 on each branch pipe 2134. The sprayed water flow turns over the sorghum material at the bottom of the water, causing the soil, sand and other impurities attached to the surface of the sorghum to detach from the sorghum and suspend in the water. The air guide pipe 2136 and one-way air valve 2137 connected to the fluid pipe 2133 at the bottom of the extension platform 211 introduce air, making the sprayed water flow contain air bubbles. As the air bubbles rise, they further enhance the disturbance to the material at the bottom of the water, helping to make small impurities float to the surface.

[0052] II. Working principle of the impurity removal component 22:

[0053] Screw conveyor 222: The drive motor 2221, installed on the outer side plate of the debris trough 221, starts and drives the rotating shaft 2222 to rotate via a coupling. Two sets of symmetrically arranged spiral blades 2223 on the rotating shaft 2222 also rotate. Because the threads of the two sets of spiral blades 2223 are opposite, when they rotate, they gather impurities floating in the debris trough 221 towards the center and convey them to the debris outlet 226 located at the center of the two sets of spiral blades 2223. This achieves the collection and conveying of impurities, facilitating their discharge from the screening box 1.

[0054] Wastewater separation: Wastewater in the debris tank 221 flows into the wastewater tank 223 through several drainage holes 225 opened between the debris tank 221 and the wastewater tank 223. The diameter of the drainage holes 225 is smaller than the size of the sorghum grains to prevent the sorghum grains from leaking out.

[0055] Wastewater discharge: Wastewater flowing into the wastewater tank 223 is discharged into the screening box 1 through the drain pipe 224 connected to the bottom of the wastewater tank 223, thus realizing the separation and treatment of impurities and wastewater.

[0056] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A screening device for producing baijiu base materials, characterized in that: The system includes a screening box (1) for screening the base material of liquor, and a screening mechanism (2) for screening sorghum to remove impurities. The screening mechanism (2) consists of a disturbance component (21) and an impurity removal component (22). The disturbance component (21) includes a horizontal pushing module (212) for disturbing the water surface and a turning module (213) for disturbing the bottom material. The horizontal pushing module (212) and the turning module (213) are set on the box body on one side of the screening box (1) through an extension platform (211). The horizontal pushing module (212) includes a circulating water pump (2121) installed on the extension platform (211) and a pressurized water tank (2122) set on the box body on one side of the screening box (1).

2. The screening equipment for producing baijiu base materials as described in claim 1, characterized in that: The input end of the circulating water pump (2121) is connected to the screening box (1) by a first water pumping pipe (2123), the output end of the circulating water pump (2121) is connected to the booster water tank (2122) by a water delivery pipe (2125), the booster water tank (2122) is connected to the screening box (1) by a plurality of water outlet pipes (2124), and the water outlet pipes (2124) are flush with the water surface in the screening box (1).

3. The screening equipment for producing baijiu base materials as described in claim 1, characterized in that: The flipping module (213) includes a high-pressure water pump (2131) mounted on the expansion platform (211) and a fluid pipe (2133) installed at the bottom of the screening box (1). A second water pumping pipe (2132) is connected between the input end of the high-pressure water pump (2131) and the screening box (1). One end of the fluid pipe (2133) passes through the screening box (1) and is connected to the output end of the high-pressure water pump (2131).

4. The screening equipment for producing baijiu base materials as described in claim 3, characterized in that: The fluid pipe (2133) is connected to a plurality of water distribution pipes (2134) for diverting water, and each water distribution pipe (2134) is provided with a plurality of nozzles (2135). In addition, an air guide pipe (2136) is connected to the body of the fluid pipe (2133) located at the bottom of the expansion platform (211), and a one-way air valve (2137) is connected to the end of the air guide pipe (2136).

5. The screening equipment for producing baijiu base materials as described in claim 1, characterized in that: The impurity removal component (22) includes an impurity trough (221) disposed on one side of the screening box (1). An auger conveyor (222) is connected inside the impurity trough (221). The auger conveyor (222) includes a drive motor (2221) mounted on the outer side plate of the impurity trough (221) and a rotating shaft (2222) rotatably disposed inside the impurity trough (221). One end of the rotating shaft (2222) passes through the side plate of the impurity trough (221) and is connected to the output shaft of the drive motor (2221) through a coupling. Two sets of spiral blades (2223) are symmetrically arranged on the rotating shaft (2222), and the thread directions of each set of spiral blades (2223) are opposite.

6. The screening equipment for producing baijiu base materials as described in claim 5, characterized in that: The bottom of the debris trough (221) is connected to a sewage trough (223). A plurality of drainage holes (225) for draining sewage from the debris trough (221) are provided between the debris trough (221) and the sewage trough (223). The diameter of the drainage holes (225) is smaller than the size of sorghum grains. The bottom of the sewage trough (223) is connected to a drain pipe (224).

7. The screening equipment for producing baijiu base materials as described in claim 6, characterized in that: The bottom of the debris trough (221) is connected to a debris outlet (226), and the debris outlet (226) is located at the center of the two sets of spiral blades (2223).

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