A new drainage device for corn fermentation tank
By introducing a drainage device consisting of a filter screen, scraper, rotating shaft, and drive motor into the corn fermentation tank, the problem of easy clogging of the filter screen was solved, achieving efficient drainage and filtration and improving the working efficiency of the fermentation tank.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN TUOBAISHI BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-07
AI Technical Summary
In traditional corn fermentation tanks, the filter screen is easily clogged by solid particles, resulting in slow drainage and affecting fermentation efficiency.
A novel drainage device for corn fermentation tanks is designed, which uses a drainage mechanism consisting of a filter screen, scraper, rotating shaft and drive motor. The filter screen holes are scraped to prevent clogging, and the spiral blades are used to accelerate drainage.
This improved drainage speed, ensured the filtration effect of the filter screen, prevented clogging, achieved efficient liquid discharge, and guaranteed the continuity of the fermentation process.
Smart Images

Figure CN224462338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corn fermentation tank technology, and in particular to a novel drainage device for corn fermentation tanks. Background Technology
[0002] A corn fermenter is a large industrial container or reactor specifically designed for the microbial fermentation of corn (or its processed products, such as corn starch and corn syrup). After fermentation, the mash is discharged and proceeds to downstream separation and purification processes. The mash cannot be discharged until the precipitate has completely settled within the conical hopper of the fermenter; at this point, a large amount of supernatant remains above the mash mixture.
[0003] In traditional drainage methods, the drain valve located at a high position above the cone is opened, and solid particles are filtered through the internal filter screen. When the filter screen is heavily clogged, it cannot be cleaned, which affects the drainage speed and is not conducive to efficient drainage.
[0004] To address the above problems, a novel drainage device for corn fermentation tanks is proposed. Utility Model Content
[0005] The main purpose of this utility model is to provide a novel drainage device for corn fermentation tanks, which solves the problems mentioned in the background art.
[0006] The objective of this utility model can be achieved by adopting the following technical solution:
[0007] A novel drainage device for a corn fermentation tank includes a tank body, wherein a drainage mechanism is provided through the outer wall of the bottom conical hopper of the tank body.
[0008] The drainage mechanism includes a first external pipe that penetrates the tank body. A filter screen is fixed in the inner wall of one end of the first external pipe that is inside the tank body. A rotating shaft is rotatably installed at the center of the filter screen. A scraper is fitted on the end of the rotating shaft facing the inside of the tank body, and a spiral blade is fitted on the end of the rotating shaft facing the outside of the tank body.
[0009] Furthermore, one end of the first outer pipe is flush with the inner wall of the conical hopper of the tank.
[0010] Furthermore, there are two sets of scrapers, with one side of the scraper in contact with the filter screen being slidably connected, and the other side of the scraper being flush with the end face of the first outer pipe.
[0011] Furthermore, the rotating shaft passes through one end of the first outer tube and is connected to a drive motor, which is detachably installed on the outer wall of the first outer tube via a flange.
[0012] Furthermore, a second outer pipe is welded to the bottom of the first outer pipe, and the two pipes are interconnected.
[0013] Furthermore, a manual valve is provided on the second external connecting pipe.
[0014] The beneficial technical effects of this utility model are as follows:
[0015] This invention, by incorporating components such as scrapers, rotating shafts, drive motors, and spiral blades into the filter screen, can scrape and wash the mesh during drainage, preventing the mesh from being clogged by particles and increasing the drainage speed. At the same time, the spiral blades accelerate the speed of gravity drainage, which is beneficial for the efficient discharge of liquids containing small solids from the fermentation tank. Attached Figure Description
[0016] Figure 1 This is a front view schematic diagram of a preferred embodiment of a novel drainage device for a corn fermentation tank according to the present invention;
[0017] Figure 2 This is a schematic diagram of the internal structure of the connection between the tank body and the drainage mechanism in a preferred embodiment of a novel drainage device for a corn fermentation tank according to the present invention;
[0018] Figure 3 This is a schematic diagram of the drainage mechanism in a preferred embodiment of a novel drainage device for a corn fermentation tank according to the present invention;
[0019] Figure 4 This is an exploded view of the drainage mechanism in a preferred embodiment of a novel drainage device for a corn fermentation tank according to the present invention.
[0020] The annotations in the attached figures are explained as follows:
[0021] 1. Tank body; 2. Drainage mechanism; 201. First external pipe; 202. Drive motor; 203. Filter screen; 204. Scraper; 205. Rotating shaft; 206. Second external pipe; 207. Spiral blade. Detailed Implementation
[0022] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.
[0023] like Figures 1-4As shown, this embodiment provides a novel drainage device for a corn fermentation tank, including a tank body 1. A drainage mechanism 2 is provided through the outer wall of the bottom conical hopper of the tank body 1. The drainage mechanism 2 includes a first external pipe 201 that penetrates the tank body 1. A filter screen 203 is fixed in the inner wall of one end of the first external pipe 201 inside the tank body 1. A rotating shaft 205 is rotatably installed at the center of the filter screen 203. A scraper 204 is sleeved on the end of the rotating shaft 205 facing the inside of the tank body 1, and a spiral blade 207 is sleeved on the end of the rotating shaft 205 facing the outside of the tank body 1.
[0024] One end of the first external pipe 201 is flush with the inner wall of the conical hopper of the tank body 1. There are two sets of scrapers 204. The side of the scraper 204 that contacts the filter screen 203 is slidably connected, and the other side of the scraper 204 is flush with the end face of the first external pipe 201.
[0025] In the above structure, the first external pipe 201 and the scraper 204 are flush with the inner wall of the tank 1 to achieve a smooth transition, so as not to affect the operation of the scraping and stirring structure.
[0026] The rotating shaft 205 passes through one end of the first outer pipe 201 and is connected to the drive motor 202. The drive motor 202 is detachably installed on the outer wall of the first outer pipe 201 via a flange. When the material ferments in the tank 1, the drive motor 202 reverses, and the spiral blade 207 pushes the solid-liquid mixture discharged from the filter screen 203 back into the tank 1 through the spiral feeding action to ensure the fermentation effect and avoid too much residue in the drainage mechanism 2. When draining, it rotates forward to discharge the clean water to the outside.
[0027] The bottom of the first outer pipe 201 is sealed with a second outer pipe 206 that is interconnected.
[0028] A manual valve is installed on the second external pipe 206.
[0029] The working principle of this device is as follows:
[0030] When in use, this device is connected to an external power supply and control unit. After fermentation, tank 1 is depressurized, cooled, and allowed to settle. The sediment is located in the conical hopper at the bottom of tank 1, and the height of the sediment does not exceed the top of filter screen 203.
[0031] Open the manual valve on the second external pipe 206, start the drive motor 202 to drive the rotating shaft 205 to rotate, the rotating shaft 205 drives the scraper 204 to rotate on the inner wall of the filter screen 203, scraping large solid particles to one side, and clean water flows into the first external pipe 201, and is driven by the rotating spiral blade 207 to the top opening of the second external pipe 206, and discharged to the outside from the second external pipe 206.
[0032] By adopting the above structure, the filtration effect of filter screen 203 can be improved when the upper layer of clear water is discharged from the fermentation tank, while ensuring the drainage speed and avoiding clogging of filter screen 203.
[0033] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.
[0034] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.
Claims
1. A novel drainage device for a corn fermentation tank, comprising a tank body (1), characterized in that: A drainage mechanism (2) is provided through the outer wall of the bottom cone of the tank (1); The drainage mechanism (2) includes a first external pipe (201) penetrating the tank (1). A filter screen (203) is fixed in the inner wall of one end of the first external pipe (201) inside the tank (1). A rotating shaft (205) is rotatably installed at the center of the filter screen (203). A scraper (204) is sleeved on the end of the rotating shaft (205) facing the inside of the tank (1), and a spiral blade (207) is sleeved on the end of the rotating shaft (205) facing the outside of the tank (1).
2. The novel drainage device for a corn fermentation tank according to claim 1, characterized in that: One end of the first external pipe (201) is flush with the inner wall of the cone of the tank (1).
3. The novel drainage device for a corn fermentation tank according to claim 2, characterized in that: There are two sets of scrapers (204). The scraper (204) is slidably connected to the side of the filter screen (203) that is in contact with it, and the other side of the scraper (204) is flush with the end face of the first outer pipe (201).
4. A novel drainage device for a corn fermentation tank according to claim 3, characterized in that: The rotating shaft (205) passes through one end of the outside of the first outer tube (201) and is connected to a drive motor (202). The drive motor (202) is detachably installed on the outer wall of the first outer tube (201) through a flange.
5. A novel drainage device for a corn fermentation tank according to claim 4, characterized in that: The bottom of the first outer tube (201) is sealed with a second outer tube (206) that is in communication with it.
6. A novel drainage device for a corn fermentation tank according to claim 5, characterized in that: A manual valve is provided on the second external pipe (206).