Stirring mechanism for fermentation tank body

Abstract

The utility model provides a stirring mechanism for a fermentation tank body, which belongs to the technical field of fermentation tanks and comprises a tank body and a stirring component arranged in the tank body, the stirring component comprises a stirring frame rotationally connected to the upper end of an inner cavity of the tank body, and the lower end of the stirring frame extends into a discharge pipe at the lower end of the tank body. A plurality of annularly distributed blades are arranged on the outer arc surface, located in the discharging pipe at the lower end of the tank body, of the stirring frame, a motor is arranged at the upper end of the tank body, an output shaft of the motor is fixedly connected with the stirring frame, and a scraping assembly used for scraping the inner wall of the tank body is further arranged in the tank body. The stirring mechanism, the scraping component and the transmission component are coordinated and matched, so that materials are prevented from being hung on the wall to influence the heat exchange efficiency of the fermentation tank, the materials hung on the wall are prevented from becoming a growth place of infectious microbes, the risk of bacterial contamination in the production process is reduced, and meanwhile, the problem that the scraping plate is excessively abraded due to the fact that the scraping component always synchronously rotates along with the stirring frame is solved.

Description

Technical Field

[0001] This utility model belongs to the field of fermentation tank technology, and specifically relates to a stirring mechanism for the body of a fermentation tank. Background Technology

[0002] A fermenter is a specialized device for biochemical reactions, primarily used in industrial fermentation processes involving the culture of microorganisms (such as bacteria and yeast) or cells. It is widely used in various industries, including food, pharmaceuticals, chemicals, and biotechnology. To ensure uniform mixing of materials within the fermenter and to promote oxygen supply, fermenters are typically equipped with a dedicated stirring mechanism.

[0003] Existing fermentation tank stirring mechanisms generally use electric motors as the drive source, which drive the stirring frame located inside the tank to rotate to achieve material stirring. Although these stirring mechanisms can basically meet the material mixing needs, there are still some problems in actual use. The material is easy to adhere to the inner wall of the tank, which not only affects the heat exchange efficiency, but may also become a breeding ground for miscellaneous bacteria, increasing the risk of contamination during production. Of course, some fermentation tanks are equipped with scrapers to remove residues on the inner wall. However, since the scraper is constantly rotating with the stirring frame, this will cause excessive wear of the scraper and shorten its service life. Utility Model Content

[0004] In view of this, the present invention provides a stirring mechanism for the fermentation tank body. Through the coordinated cooperation of the stirring mechanism, scraping component and transmission component, it can prevent material from sticking to the wall and affecting the heat exchange efficiency of the fermentation tank, avoid the material sticking to the wall from becoming a growth site for miscellaneous bacteria, reduce the risk of bacterial contamination during the production process, and at the same time avoid the problem of excessive wear of the scraper due to the scraper always rotating synchronously with the stirring frame, and prevent the material in the discharge pipe at the lower end of the tank from not being stirred, which would affect the subsequent fermentation.

[0005] To solve the above-mentioned technical problems, this utility model provides a stirring mechanism for a fermentation tank, including a tank body and a stirring assembly disposed therein. The stirring assembly includes a stirring frame rotatably connected to the upper end of the tank body cavity. The lower end of the stirring frame extends into a discharge pipe at the lower end of the tank body. Multiple blades are arranged in a ring on the outer arc surface of the stirring frame located within the discharge pipe at the lower end of the tank body. A motor is disposed at the upper end of the tank body, and the output shaft of the motor is fixedly connected to the stirring frame. A scraping assembly for scraping material from the inner wall of the tank body is also provided inside the tank body. The scraping assembly includes a rotatable connecting... A rotating box is attached to the upper part of the inner cavity of the tank. The rotating box has a rotating hole in the middle that is rotatably connected to the stirring rack. The outer arc surface of the rotating box is provided with a plurality of scraping parts evenly distributed in a ring. The rotating box is also provided with a transmission component for driving the stirring rack to rotate. This prevents the material from sticking to the wall and affecting the heat exchange efficiency of the fermentation tank, avoids the material sticking to the wall from becoming a growth site for miscellaneous bacteria, reduces the risk of bacterial contamination during the production process, and avoids the problem of excessive wear of the scraping parts due to the scraping parts always rotating synchronously with the stirring rack. It also prevents the material in the discharge pipe at the lower end of the tank from not being stirred, which would affect the subsequent fermentation.

[0006] The scraping component includes a ring of support rods evenly arranged on the outer arc surface of the rotating box. Each support rod has a mounting plate on its lower end. Each mounting plate has a groove near the inner wall of the tank. Each groove has a scraper slidably connected to it. The scrapers are in contact with the inner wall of the tank, which prevents material from sticking to the wall and affecting the heat exchange efficiency of the fermenter, avoids the material sticking to the wall from becoming a growth site for miscellaneous bacteria, and reduces the risk of bacterial contamination during the production process.

[0007] The scraper also includes multiple springs respectively disposed between the scraper and the chute, that is, the scraper is in close contact with the inner wall of the tank under the elastic support force of the spring.

[0008] The transmission assembly includes a ratchet gear located on the outer arc surface of the inner cavity of the stirring frame. A pawl is rotatably connected to the bottom of the inner cavity of the rotating box. The pawl engages with the ratchet gear, thus enabling rapid transmission and disconnection of transmission.

[0009] The transmission assembly also includes a spring plate disposed on the inner arc surface of the rotating box. The inner end of the spring plate abuts against the outer side of the pawl, thereby ensuring that it can be smoothly reset after being lifted.

[0010] The scraper is made of wear-resistant hard plastic, ensuring that it can maintain efficient scraping performance even after long-term use.

[0011] The motor is electrically connected to an external controller.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. After the motor rotates forward for a period of time, the external controller adjusts the motor to rotate in reverse. The motor output shaft rotates in reverse, driving the stirring rack and multiple blades to rotate synchronously in the opposite direction. During this process, the ratchet follows the stirring rack to rotate synchronously in the opposite direction. When the ratchet rotates in the opposite direction, the pawl will engage in the ratchet groove of the ratchet, thereby driving the rotating box, support rod, mounting plate, slide, scraper and spring to rotate synchronously in the opposite direction. Under the elastic support of the spring, the scraper adheres tightly to the inner wall of the tank, thereby effectively removing residual materials on the inner wall of the tank, preventing materials from sticking to the wall and affecting the heat exchange efficiency of the fermenter, avoiding the materials sticking to the wall from becoming a growth site for miscellaneous bacteria, and reducing the risk of contamination during the production process.

[0014] 2. When the external controller controls the motor to rotate forward, each mechanism returns to the initial stirring state. At this time, the forward rotating ratchet will continuously push up the pawl, and the pawl will overcome the elastic force of the spring and lift up. When the pawl passes one of the ratchet teeth, the pawl will immediately return to its original position under the action of the spring force. This process is repeated to avoid the problem of excessive wear of the scraper caused by the scraper always rotating synchronously with the stirring frame.

[0015] 3. Feed the material to be fermented into the tank, and then control the motor to rotate forward through the external controller. The forward rotation of the motor output shaft drives the stirring rack and multiple blades to rotate synchronously, thereby stirring the fermentation material in the tank. At the same time, the multiple blades can fully stir the material in the discharge pipe at the bottom of the tank during the rotation process, preventing the material in the discharge pipe at the bottom of the tank from not being stirred and affecting the subsequent fermentation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a stirring mechanism for a fermentation tank according to the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a partial cross-sectional view of the present invention.

[0019] Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 100, tank body; 200, stirring rack; 201, blade; 202, motor; 300, rotating box; 301, support rod; 302, mounting plate; 303, chute; 304, scraper; 305, spring; 400, ratchet; 401, pawl; 402, spring. Detailed Implementation

[0021] 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 appendices of the embodiments of this utility model. Figure 1-4The 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.

[0022] This embodiment provides a stirring mechanism for the body of a fermentation tank, such as... Figure 1-4 As shown: The tank includes a tank body 100 and a stirring assembly disposed therein. The stirring assembly includes a stirring frame 200 rotatably connected to the upper end of the inner cavity of the tank body 100. The lower end of the stirring frame 200 extends into the discharge pipe at the lower end of the tank body 100. The outer arc surface of the stirring frame 200 located in the discharge pipe at the lower end of the tank body 100 is provided with a plurality of blades 201 arranged in a ring. A motor 202 is provided at the upper end of the tank body 100. The output shaft of the motor 202 is fixedly connected to the stirring frame 200. The tank body 100 is also provided with a scraping assembly for scraping material from the inner wall of the tank body 100. The scraping assembly includes a rotating box 300 rotatably connected to the upper end of the inner cavity of the tank body 100. A rotating hole is opened in the middle of the rotating box 300 and rotatably connected to the stirring frame 200. The outer arc surface of the rotating box 300 is provided with a plurality of scraping parts evenly distributed in a ring. The rotating box 300 is also provided with a transmission assembly for driving the stirring frame 200 to rotate.

[0023] The material to be fermented is fed into tank 100. Then, an external controller controls motor 202 to rotate forward. The forward rotation of motor 202's output shaft drives the stirring rack 200 and multiple blades 201 to rotate synchronously, thus stirring the fermentation material in tank 100. Simultaneously, the multiple blades 201, during rotation, can fully stir the material in the discharge pipe at the lower end of tank 100, preventing insufficient stirring of the material in the discharge pipe and affecting subsequent fermentation. After motor 202 rotates forward for a period of time, the external controller controls motor 202 to rotate in reverse, and the reverse rotation of motor 202's output shaft drives the stirring rack... The frame 200 and multiple blades 201 rotate synchronously in opposite directions. During this process, the transmission component drives the scraper to rotate synchronously in opposite directions, and the scraper is in close contact with the inner wall of the tank 100, thereby effectively removing residual material on the inner wall of the tank 100, preventing material from sticking to the wall and affecting the heat exchange efficiency of the fermenter, avoiding the material sticking to the wall from becoming a growth site for miscellaneous bacteria, and reducing the risk of contamination during the production process. After cleaning, the external controller controls the motor 202 to rotate forward, and each mechanism returns to the initial stirring state. At this time, the transmission component disconnects the transmission to avoid the problem of excessive wear of the scraper 304 caused by the scraper always rotating synchronously with the stirring frame 200.

[0024] like Figure 2-4As shown, the scraping component includes a support rod 301 that is uniformly arranged in a ring on the outer arc surface of the rotating box 300. Each end of the support rod 301 is provided with a mounting plate 302. Each end of the mounting plate 302 near the inner wall of the tank 100 is provided with a sliding groove 303. Each sliding groove 303 is slidably connected with a scraper 304. Each scraper 304 abuts against the inner wall of the tank 100.

[0025] The output shaft of motor 202 reverses, driving the stirring frame 200 and multiple blades 201 to rotate synchronously in the opposite direction. During this process, the rotating box 300, support rod 301, mounting plate 302, slide 303, scraper 304 and spring 305 are driven to rotate synchronously in the opposite direction through the transmission component. The scraper 304 is in close contact with the inner wall of the tank 100, thereby effectively removing residual materials on the inner wall of the tank 100. After cleaning, the external controller controls motor 202 to rotate forward, and each mechanism returns to the initial stirring state. At this time, the transmission component disconnects the transmission.

[0026] like Figure 2-4 As shown, the scraping component also includes multiple springs 305 respectively disposed between the scraper 304 and the groove 303 in which it is located. Under the elastic support force of the springs 305, the scraper 304 is tightly attached to the inner wall of the tank 100.

[0027] like Figure 2-3 As shown, the transmission assembly includes a ratchet 400 disposed on the outer arc surface of the inner cavity of the stirring frame 200 located in the rotating box 300. A pawl 401 is rotatably connected to the bottom of the inner cavity of the rotating box 300. The pawl 401 is movably engaged with the ratchet 400. The ratchet 400 rotates synchronously in the opposite direction with the stirring frame 200. When the ratchet 400 rotates in the opposite direction, the pawl 401 will be engaged in the ratchet groove of the ratchet 400, thereby driving the rotating box 300, support rod 301, mounting plate 302, slide 303, scraper 304 and spring 305 to rotate synchronously in the opposite direction. When the ratchet 400 rotates in the forward direction, it will continuously push up the pawl 401. The pawl 401 will overcome the elastic force of the spring plate 402 and lift up. When the pawl 401 passes over a ratchet tooth on the ratchet 400, the pawl 401 will immediately return to its original position under the action of the spring force of the spring plate 402. This process is repeated to achieve the function of rapid transmission and disconnection of transmission.

[0028] like Figure 3 As shown, the transmission assembly also includes a spring plate 402 disposed on the inner arc surface of the rotating box 300. The inner end of the spring plate 402 abuts against the outer side of the pawl 401. The spring plate 402 provides elastic force to the pawl 401 to ensure that it is smoothly reset after being lifted.

[0029] like Figure 2-4 As shown, scraper 304 is a wear-resistant hard plastic scraper. Scraper 304 is made of hard plastic material, which has good wear resistance and corrosion resistance, ensuring that it can still maintain efficient scraping performance after long-term use.

[0030] like Figure 1-2 As shown, motor 202 is electrically connected to an external controller.

[0031] The working principle of the stirring mechanism for a fermentation tank provided by this utility model is as follows: First, the material to be fermented is fed into the tank 100. Then, the motor 202 is controlled to rotate forward by an external controller. The forward rotation of the output shaft of the motor 202 drives the stirring frame 200 and multiple blades 201 to rotate synchronously, thereby stirring the fermentation material in the tank 100. At the same time, the multiple blades 201 can fully stir the material in the discharge pipe at the lower end of the tank 100 during rotation, preventing the material in the discharge pipe at the lower end of the tank 100 from not being stirred, which would affect the subsequent fermentation. After the motor 202 rotates forward for a period of time, the external controller controls the motor 202 to rotate in reverse. The reverse rotation of the output shaft of the motor 202 drives the stirring frame 200 and multiple blades 201 to rotate synchronously in the opposite direction. During this process, the ratchet 400 rotates synchronously in the opposite direction with the stirring frame 200. When the ratchet 400 rotates in the opposite direction, the pawl 401 will engage in the ratchet groove of the ratchet 400, thereby driving the rotating box 300, support rod 301, and mounting plate 302. The chute 303, scraper 304, and spring 305 rotate synchronously in opposite directions. Under the elastic support of the spring 305, the scraper 304 adheres tightly to the inner wall of the tank 100, effectively removing residual material from the inner wall of the tank 100. This prevents material from adhering to the wall and affecting the heat exchange efficiency of the fermenter, avoids the adhering material becoming a growth site for miscellaneous bacteria, and reduces the risk of contamination during production. Furthermore, the scraper 304 is made of hard plastic, possessing excellent wear resistance and corrosion resistance, ensuring that it maintains high scraping efficiency even after prolonged use. After cleaning, the external controller adjusts the motor 202 to rotate forward, and each mechanism returns to the initial stirring state. At this time, the forward rotating ratchet 400 will continuously push up the pawl 401. The pawl 401 will overcome the elastic force of the spring plate 402 and lift up. When the pawl 401 passes over a ratchet tooth on the ratchet 400, the pawl 401 will immediately reset under the action of the spring plate 402. This process is repeated to avoid the problem of excessive wear of the scraper 304 caused by the scraper 304 always rotating synchronously with the stirring frame 200.

[0032] 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.

[0033] 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 stirring mechanism for a fermentation tank body, characterized in that: The system includes a tank (100) and a stirring assembly disposed therein. The stirring assembly includes a stirring frame (200) rotatably connected to the upper end of the inner cavity of the tank (100). The lower end of the stirring frame (200) extends into the discharge pipe at the lower end of the tank (100). The stirring frame (200) has multiple blades (201) arranged in a ring on its outer arc surface located inside the discharge pipe at the lower end of the tank (100). A motor (202) is disposed at the upper end of the tank (100). The output shaft of the motor (202) is fixedly connected to the stirring frame (200). The tank (100) also has a scraping assembly for scraping material from the inner wall of the tank (100). The scraping assembly includes a rotating box (300) rotatably connected to the upper end of the inner cavity of the tank (100). The rotating box (300) has a rotating hole in the middle that is rotatably connected to the stirring rack (200). The outer arc surface of the rotating box (300) is provided with a plurality of scraping parts evenly distributed in a ring. The rotating box (300) is also provided with a transmission assembly for driving the stirring rack (200) to rotate. The transmission assembly includes a ratchet gear (400) located on the outer arc surface of the stirring rack (200) in the inner cavity of the rotating box (300). A pawl (401) is rotatably connected to the bottom of the inner cavity of the rotating box (300). The pawl (401) is movably engaged with the ratchet gear (400). The transmission assembly also includes a spring piece (402) located on the inner arc surface of the rotating box (300). The inner end of the spring piece (402) abuts against the outer side of the pawl (401).

2. The stirring mechanism for a fermentation tank body as described in claim 1, characterized in that: The scraping component includes a support rod (301) evenly arranged in a ring on the outer arc surface of the rotating box (300). The lower side of the end of the support rod (301) is provided with a mounting plate (302). The end of the mounting plate (302) near the inner wall of the tank (100) is provided with a sliding groove (303). A scraper (304) is slidably connected in the sliding groove (303). The scraper (304) abuts against the inner wall of the tank (100).

3. The stirring mechanism for a fermentation tank body as described in claim 2, characterized in that: The scraper also includes a plurality of springs (305) respectively disposed between the scraper (304) and the groove (303) in which it is located.

4. The stirring mechanism for a fermentation tank body as described in claim 2, characterized in that: The scraper (304) is a wear-resistant hard plastic scraper.

5. The stirring mechanism for a fermentation tank body as described in claim 1, characterized in that: The motor (202) is electrically connected to an external controller.

Images