Yoghourt fermentation device
By designing a yogurt fermentation device including a tank, shell, mixing rack and detection probe, the problems of low accuracy and low automation of the existing device parameter regulation are solved, and a more efficient fermentation and cleaning process is achieved, and the quality and production efficiency of yogurt are improved.
Patent Information
- Application Number
- CN202421830307.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing yogurt fermentation devices have problems such as low parameter regulation accuracy, low degree of automation, low unloading efficiency and cleaning efficiency, which makes it difficult to control the quality of yogurt and increase production costs.
A yogurt fermentation device including a tank, a shell, a stirring rack, an elastic scraper and a detection probe was designed. By monitoring and controlling fermentation parameters in real time, such as pH value, temperature and oxygen content, combined with the use of hot air channels and rotary nozzles, the automation and accuracy of the fermentation process is improved, and the unloading and cleaning efficiency is improved through the coordination of elastic scraper and wedge block.
It achieves more precise control of the yogurt fermentation process, improves the fermentation quality and product quality, significantly improves the unloading and cleaning efficiency, and reduces production costs.
Smart Images
Figure CN222803806U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of microbial fermentation, in particular to a yogurt fermentation device. Background Art
[0002] Yogurt is a sweet and sour milk drink. It is made from milk and fermented by Lactobacillus bulgaricus and Streptococcus thermophilus. It is a yogurt product that is rich in nutrition and has a unique flavor. Compared with ordinary milk, yogurt has a low fat content, a high calcium content, and is rich in vitamins B2, B12, phosphorus, and potassium trace elements. The lactic acid bacteria in yogurt are beneficial bacteria for humans. They can stimulate gastric juice secretion, help digestion, increase appetite and gastrointestinal function, and effectively prevent intestinal infections and improve the body's immune function, which is of great benefit to the human body. On the basis of traditional yogurt, adding probiotics, nutrients, trace elements, juices and jams to make functional dairy products has become a hot spot of competition in the dairy industry and a popular consumer fashion. The mass production of each functional dairy product is inseparable from the necessary step of yogurt fermentation, which is also one of the main factors affecting the quality of yogurt. The yogurt fermentation device is usually a tank. During the fermentation process, various required parameters (temperature, raw materials, oxygen concentration, stirring speed, etc.) need to be controlled, screened and optimized. Therefore, the requirements for the yogurt fermentation device are also high.
[0003] Existing yogurt fermentation devices are often simple in structure, resulting in problems such as low parameter control accuracy and low degree of automation, and the quality of yogurt is not easy to control. In addition, because yogurt itself has a certain degree of adhesion, it will cause problems such as sticking to the wall and unclean unloading / cleaning during unloading or cleaning. The unloading and cleaning efficiency is low, and a small amount of yogurt will be wasted, increasing production costs. In view of this, it is necessary to improve the current yogurt fermentation device to solve the above problems. Utility Model Content
[0004] The utility model provides a yogurt fermentation device, which is used to solve the problems of low parameter control accuracy, difficult product quality control, low unloading efficiency and cleaning efficiency in the existing device.
[0005] The utility model provides a yogurt fermentation device, comprising: a tank body, a feed pipe and an auxiliary material pipe are arranged on the top of the tank body, a discharge pipe is arranged at the bottom center of the tank body, and the bottom of the tank body is an inverted cone structure; a pH meter, an oxygen content detection probe, a temperature probe and a pressure probe are also arranged in the tank body; a shell is arranged around the side wall and the outer side of the bottom wall of the tank body, an air inlet pipe is arranged on one side of the bottom of the shell body, an air outlet pipe is arranged on one side of the top of the shell body, and the air inlet pipe is connected with a hot air duct; a cleaning pipe is also connected to the top of the tank body, and rotating spray heads are evenly distributed on the cleaning pipe located inside the tank body.
[0006] Optionally, a motor is provided at the top center of the tank body, and a driving shaft is connected to the output end of the motor. A plurality of horizontal stirring frames are evenly distributed on the driving shaft, and a bottom wall rod parallel to the bottom wall of the tank body is fixedly connected to the bottom of the driving shaft; a horizontal connecting rod is connected to the end of each stirring frame, and the other end of the connecting rod is connected to a vertically arranged side wall rod, and elastic scraping strips are provided on the side of the side wall rod and the bottom wall rod close to the inner wall of the tank body, and the elastic scraping strips abut against the inner wall of the tank body; a plurality of wedge blocks are evenly distributed on the side wall of the tank body.
[0007] Optionally, an air inlet pipe and an air outlet pipe are respectively provided on both sides of the top of the tank body, and the outlet of the air inlet pipe and the inlet of the air outlet pipe are both arranged above the material in the tank body; the air inlet pipe is connected to the air source network.
[0008] Optionally, the bottom end surface of the elastic scraper strip connected to the side wall rod is set as an inclined surface, and the side of the elastic scraper strip close to the side wall rod is an inclined lower end.
[0009] Optionally, a guide plate is provided on one side surface of the side wall rod away from the elastic scraper strip, the guide plate is in the shape of a fish fin extending toward the bottom of the tank body, and the connection between the guide plate and the side wall rod is flush with the inclined lower end of the elastic scraper strip.
[0010] Optionally, the elastic scraper connected to the bottom wall rod is configured as an upwardly extending arc structure at one end close to the connection between the side wall and the bottom wall of the tank body, and the arc structure fits tightly with the connection between the side wall and the bottom wall of the tank body.
[0011] Optionally, a sliding component is provided between the stirring frame and the connecting rod, and the sliding component includes a sliding groove opened in the inner wall of the end of the stirring frame, and an I-shaped sliding column is provided at the end of the connecting rod. One side of the sliding column is placed in the sliding groove and is slidingly sealed to the sliding groove.
[0012] Optionally, a sampling hole is opened on the side wall of the tank body, and the sampling hole is connected to a sampling tube that passes through the shell.
[0013] Optionally, a controller is also provided on the tank body, and electromagnetic control valves are provided on the feed pipe, auxiliary material pipe, discharge pipe, air inlet pipe, air outlet pipe, cleaning pipe, air inlet pipe and air outlet pipe, and the controller is electrically connected to the motor and each electromagnetic control valve.
[0014] The yogurt fermentation device provided by the utility model, through the joint use of a pH meter, an oxygen content detection probe, a temperature probe and a pressure probe, enables the entire fermentation process to monitor and control various fermentation parameters in real time, provides a better fermentation environment for yogurt fermentation, improves the quality control and quality inspection of the yogurt fermentation process, and ensures the quality of yogurt.
[0015] Hot air is introduced into the shell of the device, which is conducive to ensuring the constant temperature fermentation of yogurt and improving the fermentation quality; the stirring rack can accelerate the modulation and mixing of the fermented milk base and auxiliary materials, making the fermentation more uniform and efficient; the elastic scraping strips on the side wall rod and the bottom wall rod can be concentrated and scraped off, and the elastic scraping strips are shaken by the wedge blocks to shake off the yogurt on the elastic scraping strips and the stirring rack, thereby improving the unloading efficiency and the cleaning efficiency.
[0016] The device has a simple structure, good practicality, high precision in controlling fermentation parameters, and a high degree of automation. While increasing the fermentation rate, it can more accurately control product quality, thereby improving the quality of fermented products. At the same time, the coordination of a stirring rack, a sliding component, a side wall rod, a guide vane, a bottom wall rod, and an elastic scraper strip significantly improves the unloading efficiency and the cleaning efficiency, thereby avoiding the waste and cost increase caused by yogurt sticking to the wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the structure of a yogurt fermentation device provided in one embodiment of the utility model;
[0019] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;
[0020] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;
[0021] Figure 4 This is a schematic structural diagram of a sliding component provided in one embodiment of the utility model.
[0022] Description of reference numerals:
[0023] 1-tank body, 2-shell, 3-cleaning pipe, 11-feed pipe, 12-auxiliary material pipe, 13-discharge pipe, 14-wedge block, 15-inlet pipe, 16-outlet pipe, 17-controller, 21-inlet pipe, 22-outlet pipe, 23-sampling tube, 31-rotating nozzle, 41-motor, 42-drive shaft, 43-stirring frame, 44-bottom wall rod, 45-connecting rod, 46-side wall rod, 47-elastic scraper, 431-slide groove, 451-sliding column, 461-guide plate. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the utility model.
[0025] like Figure 1 The utility model provides a yogurt fermentation device, comprising: a tank body 1, a feed pipe 11 and an auxiliary material pipe 12 are provided on the top of the tank body 1, a discharge pipe 13 is provided at the bottom center of the tank body 1, and the bottom of the tank body 1 is an inverted cone structure; a pH meter, an oxygen content detection probe, a temperature probe and a pressure probe are also provided in the tank body 1 (conventional settings, not shown in the drawings).
[0026] The tank body 1 is used for yogurt fermentation, the feed pipe 11 is used to convey fermented milk base materials, such as cow's milk, liquid milk, compound milk, etc., into the tank body 1, the auxiliary material pipe 12 is used to convey auxiliary materials, such as fermentation bacteria, sweeteners, thickeners and other additives, into the tank body 1, and the discharge pipe 13 is used for discharging and unloading materials after fermentation is completed. The tank body 1 is provided with a pH meter for measuring the real-time pH value of the material in the tank body 1, the temperature probe is used to monitor the temperature of the material in the tank body 1, and the pressure probe is used to monitor the pressure in the tank body 1, so as to control the temperature and pressure within the optimal fermentation range and accelerate the fermentation process. The oxygen content detection probe is used to monitor the oxygen content in the tank body 1. Since the fermentation bacteria are usually anaerobic bacteria, it is necessary to monitor and avoid sudden changes in the oxygen content in the tank body 1. Through multi-faceted monitoring and coordination, the fermentation degree of yogurt can be observed online in real time, and various fermentation parameters can be more conveniently controlled to improve the quality control and quality inspection of the yogurt fermentation process and ensure the quality of yogurt.
[0027] like Figure 1 Optionally, a shell 2 is provided on the outer side of the side wall and the bottom wall of the tank body 1, an air inlet pipe 21 is provided on the bottom side of the shell 2, and an air outlet pipe 22 is provided on the top side of the shell 2, and the air inlet pipe 21 is connected to a hot air duct; a cleaning pipe 3 is also connected to the top of the tank body 1, and rotating nozzles 31 are evenly distributed on the cleaning pipe 3 located inside the tank body 1.
[0028] The gap between the tank body 1 and the shell 2 forms a hot air channel, which facilitates the circulation of hot air from the hot air duct and the air inlet pipe 21. When the hot air flows through the shell 2, it can heat or keep the tank body 1 warm. The fermentation temperature in the tank body 1 is maintained within a certain range in cooperation with the temperature probe to ensure that the fermentation is carried out at a constant temperature, thereby improving the fermentation quality. The hot air is finally discharged through the air outlet pipe 22. When the fermentation and unloading are completed, when the tank body 1 needs to be cleaned, cleaning water is fed into the tank body 1 through the cleaning pipe 3. The rotating nozzle 31 adopts the automatic rotating nozzle commonly used in the prior art, which can rotate and spray water under the impact of water pressure to clean the inner wall of the tank body 1 360°. The cleaning operation is convenient and efficient. The shape of the cleaning pipe 3 located inside the tank body 1 in the tank body 1 is not particularly limited, as long as the cleaning water can be evenly sprayed onto the inner wall of the tank body 1 and the stirring rack 43. Preferably, the cleaning pipe 3 located inside the tank body 1 is arranged above the stirring rack 43 and is in a regular circular shape.
[0029] like Figure 1 Optionally, a motor 41 is provided at the top center of the tank body 1, and a driving shaft 42 is connected to the output end of the motor 41. A plurality of horizontal stirring frames 43 are evenly distributed on the driving shaft 42, and a bottom wall rod 44 parallel to the bottom wall of the tank body 1 is fixedly connected to the bottom of the driving shaft 42; a horizontal connecting rod 45 is connected to the end of each stirring frame 43, and the other end of the connecting rod 45 is connected to a vertically arranged side wall rod 46, and elastic scraping strips 47 are provided on the side of the side wall rod 46 and the bottom wall rod 44 close to the inner wall of the tank body 1, and the elastic scraping strips 47 abut against the inner wall of the tank body 1; a plurality of wedge blocks 14 are evenly distributed on the side wall of the tank body 1.
[0030] Start the motor 41, and the motor 41 drives the stirring frame 43 to rotate through the driving shaft 42 to stir the materials in the tank body 1, and can also accelerate the modulation and mixing of the fermented milk base and auxiliary materials, so that the fermentation is more uniform and efficient. The elastic scraper 47 is made of food-grade silicone material. The elastic scraper 47 abuts against the side wall and bottom wall of the tank body 1. When unloading, the motor 41 drives it to rotate, and the yogurt adhering to the side wall and bottom wall of the tank body 1 can be concentrated and scraped off. The elastic scraper 47 is elastic. After encountering the wedge block 14 during rotation, it will deform and quickly reset. In this process, the elastic scraper 47 generates vibration, which can shake off the yogurt on the elastic scraper 47 and the stirring frame 43, reducing the waste of yogurt caused by yogurt sticking to the wall. When cleaning, this vibration can also be used to clean the stirring frame 43, the connecting rod 45, the side wall rod 46, etc., to improve the cleaning effect, and also solve the shortcomings of low yogurt unloading efficiency and cleaning efficiency in the prior art.
[0031] like Figure 1Optionally, an air inlet pipe 15 and an air outlet pipe 16 are provided on both sides of the top of the tank body 1, and the outlet of the air inlet pipe 15 and the inlet of the air outlet pipe 16 are both provided above the material in the tank body 1; the air inlet pipe 15 is connected to the gas source network. Although the fermentation bacteria of traditional yogurt are usually anaerobic bacteria, when other strains are prepared in the yogurt, it is necessary to meet the gas culture environment requirements of different fermentation bacteria. The gas composition in the tank body 1 can be quickly adjusted through the air inlet pipe 15 and the air outlet pipe 16 to meet the needs of different strains, so that the practicality of the tank body 1 is better. The gas source network can be one or more of a nitrogen gas source, an oxygen gas source, and a carbon dioxide gas source.
[0032] like Figure 2 Optionally, the bottom end surface of the elastic scraper 47 connected to the side wall rod 46 is set as an inclined surface, and the side of the elastic scraper 47 close to the side wall rod 46 is an inclined lower end. The bottom end surface of the elastic scraper 47 on the side wall rod 46 is set as an inclined surface, so that the scraped yogurt can fall along the inclined direction of the scraper, and will not slide along the inner wall of the tank body 1, so as to prevent it from adhering to the inner wall of the tank body 1 again, thereby improving the scraping effect.
[0033] like Figure 2 Optionally, a guide piece 461 is provided on one side of the side wall rod 46 away from the elastic scraper strip 47. The guide piece 461 is in the shape of a fish fin extending toward the bottom of the tank body 1, and the connection between the guide piece 461 and the side wall rod 46 is flush with the inclined lower end of the elastic scraper strip 47. The guide piece 461 in the shape of a fish fin has a better diversion effect. The guide piece 461 extends to the lower middle position of the tank body 1, so that the scraped yogurt can fall along the tip of the fish fin to a position farther away from the side wall of the tank body 1, and the drainage effect is better than that of the linear structure.
[0034] like Figure 3 Optionally, the elastic scraper strip 47 connected to the bottom wall rod 44 is provided with an arc structure extending upward at one end near the connection between the side wall and the bottom wall of the tank body 1, and the arc structure is closely fitted with the connection between the side wall and the bottom wall of the tank body 1. There is a bend at the connection between the side wall and the bottom wall of the tank body 1, which is easy to form a dead angle, and the elastic scraper strip 47 with an arc structure at the end can be closely fitted with the connection between the side wall and the bottom wall of the tank body 1, scraping off all the yogurt here as much as possible without leaving a dead angle, so that it can be discharged along the inverted cone bottom wall, reducing the residue of yogurt and improving the unloading efficiency or cleaning efficiency.
[0035] like Figure 4Optionally, a sliding component is provided between the stirring frame 43 and the connecting rod 45, and the sliding component includes a slide groove 431 opened in the inner wall of the end of the stirring frame 43, and an I-shaped sliding column 451 is provided at the end of the connecting rod 45, and one side of the sliding column 451 is placed in the slide groove 431, and is connected to the slide groove 431 in a sliding and sealing manner. The sliding column 451 of the sliding component slides in the slide groove 431, so that the distance between the side wall rod 46 and the tank body 1 can be adjusted, and when encountering the wedge block 14, it can pass quickly without being stuck, and the elastic scraper 47 on the side wall rod 46 can always fit with the inner wall of the tank body 1. Under the power of the motor 41, the elastic scraper 47 scrapes off the solidified yogurt adhered to the inner wall of the tank body 1, thereby increasing the efficiency of the tank body 1 during the unloading and cleaning process. The sliding column 451 and the slide groove 431 are sealed by a sliding sealing structure (such as a sealing ring, etc.) commonly used in the art to prevent yogurt or materials from entering the slide groove 431 and affecting its sliding effect.
[0036] like Figure 1 Optionally, a sampling hole is provided on the side wall of the tank body 1, and the sampling hole is connected to a sampling tube 23 that penetrates the shell 2. The sampling hole and the sampling tube 23 facilitate sampling and testing of the material in the tank body 1 at any time, and facilitate operators to control various fermentation parameters. The sampling tube 23 is provided with a valve for convenient opening and closing.
[0037] like Figure 1 Optionally, the tank body 1 is further provided with a controller 17, and the feed pipe 11, the auxiliary material pipe 12, the discharge pipe 13, the air inlet pipe 21, the air outlet pipe 22, the cleaning pipe 3, the air inlet pipe 15 and the air outlet pipe 16 are all provided with electromagnetic control valves, and the controller 17 is electrically connected to the motor 41 and each electromagnetic control valve. The controller 17 is provided to improve the automation degree of the yogurt fermentation device. By operating the controller 17, the feeding, unloading, cleaning and fermentation processes of the yogurt fermentation device can be controlled and adjusted, which is convenient and fast to operate, and also reduces the intensity of manual operation.
[0038] The yogurt fermentation device of the utility model, when working, opens the electromagnetic control valves on the feed pipe 11 and the auxiliary material pipe 12 through the controller 17, and delivers the fermented milk base (such as cow's milk) and auxiliary materials (such as fermentation bacteria) into the tank body 1, then opens the electromagnetic control valves on the air inlet pipe 15 and the air outlet pipe 16, replaces the air in the tank body 1 with nitrogen, and starts fermentation. During the fermentation period, the temperature of the material in the tank body 1 is monitored by the temperature probe. When the temperature is not within the fermentation temperature range, hot air is fed into the shell body 2 through the air inlet pipe 21 of the shell body 2, and discharged from the air outlet pipe 22. When the hot air circulates in the shell body 2, it can transfer heat to the tank body 1 and the material therein, ensuring that the fermentation can be carried out at a constant temperature. At the same time, the pH value, pressure and oxygen content in the tank body 1 are monitored in real time by the pH meter, pressure probe and oxygen content detection probe in the tank body 1, and they are adjusted by the controller 17.
[0039] When fermentation starts, the controller 17 starts the motor 41 synchronously, and the motor 41 drives the stirring frame 43 to rotate through the driving shaft 42, stirring the material in the tank body 1, and accelerating the modulation and mixing of the fermented milk base and auxiliary materials. At the same time, the side wall rod 46 and the bottom wall rod 44 also rotate accordingly, and the elastic scraper strip 47 thereon abuts against the side wall and bottom wall of the tank body 1, which can collect and scrape the material adhering to the side wall and bottom wall of the tank body 1, so that the material is mixed evenly, and the fermentation is more uniform and efficient. During the fermentation period, the material in the tank body 1 can be sampled and tested at any time from the sampling hole and the sampling tube 23, so as to adjust the fermentation parameters at any time.
[0040] After fermentation is completed, the electromagnetic control valve on the discharge pipe 13 is opened to discharge the material, and the motor 41 continues to work. The elastic scraper 47 can collect and scrape the yogurt adhering to the side wall and the bottom wall of the tank body 1, and the elastic scraper 47 will be deformed and quickly reset after encountering the wedge block 14 during rotation. In this process, the elastic scraper 47 will vibrate, and the yogurt on the elastic scraper 47 and the stirring frame 43 can be shaken off, thereby reducing the waste of yogurt caused by yogurt adhering to the wall. The bottom end surface of the elastic scraper 47 on the side wall rod 46 is set as an inclined surface, and a guide plate 461 is provided on a side surface of the side wall rod 46 away from the elastic scraper 47. The guide plate 461 is in the shape of a fish fin extending toward the bottom of the tank body 1. The connection between the guide plate 461 and the side wall rod 46 is flush with the inclined lower end of the elastic scraper 47, so that the scraped yogurt can fall along the tip of the fish fin shape to a position farther away from the side wall of the tank body 1, thereby improving the scraping effect. At the same time, the sliding column 451 of the sliding component slides in the slide groove 431, so that the distance between the side wall rod 46 and the tank body 1 can be adjusted, and when encountering the wedge block 14, it can pass quickly without being stuck, and the elastic scraper 47 on the side wall rod 46 can always fit with the inner wall of the tank body 1. Under the power of the motor 41, the elastic scraper 47 scrapes off the solidified yogurt adhering to the inner wall of the tank body 1, thereby increasing the efficiency of the tank body 1 during the unloading process. The elastic scraper 47 connected to the bottom wall rod 44 is designed to cooperate with each other, and the end of the elastic scraper 47 is provided with an arc structure, which is tightly fitted with the connection between the side wall and the bottom wall of the tank body 1, so that the yogurt here is scraped off as much as possible without leaving a dead angle, so that it can be discharged along the inverted cone bottom wall, reducing the residue of yogurt and improving the unloading efficiency or cleaning efficiency.
[0041] After the unloading is completed, the motor 41 is stopped. If the tank body 1 needs to be cleaned, the controller 17 opens the electromagnetic control valve on the cleaning pipe 3, so that the cleaning water enters the tank body 1, and the rotating nozzle 31 rotates and sprays the water column under the impact of water pressure to clean the inner wall of the tank body 1 360 degrees. At the same time, the motor 41 is started, and the elastic scraper 47 is used to clean the yogurt remaining on the side wall and bottom wall of the tank body 1. At the same time, the elastic scraper 47 on the side wall rod 46 can also be used to generate vibrations caused by the collision between the wedge block 14 to shake off and rinse the residual yogurt on the stirring frame 43, the connecting rod 45, and the side wall rod 46, thereby improving the cleaning effect and solving the disadvantage of low yogurt cleaning efficiency in the prior art.
[0042] It should be noted that in the present invention, the detailed structure of some devices is not described in detail, but belongs to the prior art known to those skilled in the art, so it will not be repeated here. In addition, the parts not involved in the device are the same as the prior art or can be implemented by the prior art.
[0043] It should be noted that pressure sensors, flow meters or temperature sensors are installed between different components on the delivery pipeline inside the device, and different valves are also installed, such as pressure relief valves, pressure regulating valves, safety valves, etc., which are used to adjust and stabilize the pressure of the entire device.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A yogurt fermentation device, characterized in that: include: A tank body, wherein a feed pipe and an auxiliary material pipe are arranged on the top of the tank body, a discharge pipe is arranged at the bottom center of the tank body, and the bottom of the tank body is an inverted cone structure; a pH meter, an oxygen content detection probe, a temperature probe and a pressure probe are also arranged in the tank body; a shell is arranged around the outer side of the side wall and the bottom wall of the tank body, an air inlet pipe is arranged on the bottom side of the shell body, an air outlet pipe is arranged on the top side of the shell body, and the air inlet pipe is connected to a hot air duct; a cleaning pipe is also connected to the top of the tank body, and rotating nozzles are evenly distributed on the cleaning pipe located inside the tank body; A motor is provided at the top center of the tank body, and a driving shaft is connected to the output end of the motor. A plurality of horizontal stirring frames are evenly distributed on the driving shaft, and a bottom wall rod parallel to the bottom wall of the tank body is fixedly connected to the bottom of the driving shaft; a horizontal connecting rod is connected to the end of each stirring frame, and the other end of the connecting rod is connected to a vertically arranged side wall rod, and elastic scraping strips are provided on the side of the side wall rod and the bottom wall rod close to the inner wall of the tank body, and the elastic scraping strips abut against the inner wall of the tank body; a plurality of wedge blocks are evenly distributed on the side wall of the tank body.
2. The yogurt fermentation device according to claim 1, characterized in that: An air inlet pipe and an air outlet pipe are respectively arranged on both sides of the top of the tank body, and the outlet of the air inlet pipe and the inlet of the air outlet pipe are both arranged above the material in the tank body; the air inlet pipe is connected to an air source pipe network.
3. The yogurt fermentation device according to claim 1, characterized in that: The bottom end surface of the elastic scraper connected to the side wall rod is set as an inclined surface, and the side of the elastic scraper close to the side wall rod is an inclined lower end.
4. The yogurt fermentation device according to claim 3, characterized in that: A guide plate is arranged on one side of the side wall rod away from the elastic scraper strip. The guide plate is in the shape of a fish fin extending toward the bottom of the tank body. The connection between the guide plate and the side wall rod is flush with the inclined lower end of the elastic scraper strip.
5. The yogurt fermentation device according to claim 1, characterized in that: The elastic scraper connected to the bottom wall rod is arranged as an upwardly extending arc structure at one end close to the connection between the tank side wall and the bottom wall, and the arc structure is tightly fitted with the connection between the tank side wall and the bottom wall.
6. The yogurt fermentation device according to any one of claims 1 to 5, characterized in that: A sliding component is provided between the stirring frame and the connecting rod, and the sliding component includes a sliding groove opened in the inner wall of the end of the stirring frame. An I-shaped sliding column is provided at the end of the connecting rod. One side of the sliding column is placed in the sliding groove and is slidingly sealed to the sliding groove.
7. The yogurt fermentation device according to claim 1, characterized in that: A sampling hole is provided on the side wall of the tank body, and the sampling hole is connected to a sampling tube that passes through the shell.
8. The yogurt fermentation device according to claim 2, characterized in that: The tank body is also provided with a controller, and the feed pipe, the auxiliary material pipe, the discharge pipe, the air inlet pipe, the air outlet pipe, the cleaning pipe, the air inlet pipe and the air outlet pipe are all provided with electromagnetic control valves, and the controller is electrically connected to the motor and each of the electromagnetic control valves.