Multipurpose plant vacuum fermentation and extraction integrated equipment

Abstract

The invention relates to multipurpose plant vacuum fermentation and extraction integrated equipment which comprises a support and a tank mounted on the support, the tank sequentially comprises a tank top, a tank body and a tank bottom from top to bottom, a stirring motor is arranged above the tank top, a paddle driven by the stirring motor to rotate is arranged in the tank body, and an upper seal head is arranged on the tank top. The upper seal head is provided with a feeding port, a feeding port, a vacuum port and a ventilation port, the tank body is composed of a tank body inner layer, a tank body middle layer and a heating cavity located between the tank body inner layer and the tank body middle layer, the tank body middle layer is provided with a steam inlet communicated with the heating cavity, and the tank bottom is composed of a lower seal head, an outer seal head and a constant-temperature cavity between the lower seal head and the outer seal head. The constant-temperature cavity is communicated with the heating cavity, the outer sealing head is provided with a constant-temperature probe, a constant-temperature heating pipe and a steam outlet, and the lower sealing head is provided with a discharge hole. By adopting the scheme, the invention provides the multipurpose plant vacuum fermentation and extraction integrated equipment which integrates fermentation and extraction, so that the preparation quality is ensured, and the preparation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of plant fermentation and extraction, specifically to a multi-purpose integrated plant vacuum fermentation and extraction device. Background Technology

[0002] Plant fermentation and extraction are key processes widely used in biotechnology, food, medicine and cosmetics, with the common goal of obtaining high-value active ingredients or functional products from plants.

[0003] The common fermentation method generally uses fermentation tanks and microorganisms (such as bacteria, yeast, fungi) or enzymes to biotransform plant raw materials (roots, stems, leaves, fruits, etc.) to produce new metabolites or enhance the biological activity of the original components.

[0004] However, during the fermentation process, it is usually necessary to open the fermentation tank lid to take samples of the fermentation liquid for testing. When taking samples, airborne bacteria can easily enter the fermentation tank and contaminate the fermentation liquid. In severe cases, this can lead to the deterioration of the liquid inside the fermentation tank. Similarly, due to the long-term rotation of the stirring shaft, the sealing structure between the stirring shaft and the fermentation tank is continuously worn. Over time, this gradually forms a key contamination point where airborne bacteria can enter the fermentation tank. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a multi-purpose plant vacuum fermentation and extraction integrated device that combines fermentation and extraction, thereby ensuring the quality of the preparation and improving the efficiency of the preparation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a support frame and a tank mounted on the support frame, wherein the tank body comprises, from top to bottom, a tank top, a tank body, and a tank bottom; a stirring motor is disposed above the tank top; and a paddle rotating under the drive of the stirring motor is disposed inside the tank body. The tank top is characterized by having an upper end cap, which includes a feeding port, a feed inlet, a vacuum port, and a vent. The feeding port uses a vacuum transfer method to feed materials; the vent is equipped with a valve for connecting to an air source or an oxygen source; and the vacuum port is equipped with a valve for connecting to a vacuum pump or an air pump. The tank body consists of an inner tank layer, a middle tank layer, and a heating chamber located between the inner and middle tank layers. The middle tank layer is provided with a steam inlet connected to the heating chamber. Steam is introduced through the steam inlet for heating or cooling water is introduced for cooling. The tank bottom consists of a lower end cap, an outer end cap, and a constant temperature chamber between the lower and outer end caps. The constant temperature chamber is connected to the heating chamber. The outer end cap is provided with a constant temperature probe, a constant temperature heating pipe, and a steam outlet. The lower end cap is provided with a discharge port. The discharge port is equipped with a valve for discharging plant residue or a valve with a filter screen for discharging crude extract.

[0007] By adopting the above technical solution, the fermentation and extraction functions are integrated by combining the feeding port, inlet, vacuum port, vent, steam inlet, and constant temperature heating tube. This reduces the uncertainty factors brought to the product by intermediate processes, can produce high-quality fermented extracts, and greatly improves the preparation efficiency.

[0008] The present invention is further configured such that the upper end cap is provided with a sight glass, a sight glass light port, a pressure gauge port, and a universal spray port.

[0009] By adopting the above technical solution, adding a sight glass, sight glass light port, pressure gauge port, and universal spray port, the equipment becomes more comprehensive in function.

[0010] The present invention is further configured such that: a steam pressure port for installing a safety valve is provided in the middle layer of the tank body.

[0011] By adopting the above technical solution and adding a steam pressure port, the safety performance of the equipment is improved.

[0012] The invention is further configured to include a radial magnetic coupler. The upper end cap is integrally provided with a transmission column extending from top to bottom into the tank body. The number of paddles is multiple and arranged sequentially from top to bottom inside the tank body. An installation ring is provided in the middle of each paddle. A rotating groove is provided around the outer periphery of the transmission column, corresponding to each paddle and rotatingly engaging with the installation ring. A transmission cavity is provided in the transmission column along the vertical direction. The upper end of the transmission cavity is connected to the outside of the tank body, and the lower end is closed. A transmission shaft is provided in the transmission cavity along the vertical direction, rotating and engaging with the transmission cavity and rotating under the drive of the stirring motor. The radial magnetic coupler includes an outer rotor and an inner rotor. The outer rotor is fixed to the inner periphery of each installation ring, and the inner rotor is fixed to the outer periphery of the transmission shaft and corresponds to each outer rotor. The outer rotor and the inner rotor constitute a magnetic transmission engagement between the transmission shaft and the paddles.

[0013] By adopting the above technical solution, the transmission column, which is integrally set with the upper end cap, completely separates the transmission shaft from the paddle, and the torque is transmitted through the side wall of the transmission column via a radial magnetic coupler, preventing airborne bacteria from entering the tank from this position, thereby ensuring quality.

[0014] The present invention is further configured such that: the lower end of the transmission column is provided with a cover that closes the transmission cavity and is fixed by welding; the lower end of the transmission cavity is provided with a bearing groove surrounding the transmission shaft and a bearing installed between the bearing groove and the transmission shaft; and the cover confines the bearing within the bearing groove.

[0015] By adopting the above technical solution, the lower end of the transmission cavity is sealed by the cover. On the one hand, this facilitates the assembly of the transmission column and bearings, and on the other hand, the welding fixation ensures the sealing effect.

[0016] The invention is further configured to include an axial magnetic coupler. Above the upper end cap, there is a motor platform for fixing the stirring motor and a lifting mechanism for driving the motor platform to rise and fall. Below the stirring motor, there is a motor shaft that rotates under the drive of the stirring motor. The axial magnetic coupler includes a front rotor and a rear rotor. The front rotor is fixed to the lower end of the motor shaft, and the rear rotor is fixed to the upper end of the transmission shaft and is opposite to the front rotor. The front rotor and the rear rotor constitute a magnetic transmission connection between the motor shaft and the transmission shaft.

[0017] By adopting the above technical solution, in order to ensure the mixing effect, it is necessary to precisely control the mixing force of the paddle, that is, the torque output by the drive shaft. Therefore, an axial magnetic coupler is used to form the transmission connection between the mixing motor and the drive shaft. Then, by adjusting the distance between the front rotor and the rear rotor, the maximum torque that can be transmitted can be adjusted. When the maximum torque is exceeded, the transmission connection between the mixing motor and the drive shaft will be automatically canceled. As fermentation proceeds or the internal temperature rises, the mixing damping will gradually decrease, and the mixing motor and the drive shaft will resume the transmission connection to continue mixing, ensuring the stable operation of mixing.

[0018] The present invention is further configured such that: the lifting mechanism includes a lifting motor and a plurality of guide rods, each of the guide rods is fixed above the upper end cap in the vertical direction, the guide rods pass through the motor platform and form an upward and downward sliding cooperation with the motor platform, the lifting motor is fixed above the upper end cap and is provided with a lifting screw that rotates under the drive of the lifting motor in the vertical direction, the lifting screw passes through the motor platform and is threadedly engaged with the motor platform.

[0019] By adopting the above technical solution, multiple guide rods work together to achieve stable lifting and lowering of the motor platform, and the lifting motor drives the lifting screw that is threadedly engaged with the motor platform to rotate, so that the height of the motor platform can be precisely controlled, thereby precisely controlling the distance between the front rotor and the rear rotor.

[0020] The invention is further configured such that: the upper end cap is provided with a transmission chamber connected to the transmission chamber above the transmission chamber; the front rotor and the rear rotor are located in the transmission chamber; the motor shaft extends into the transmission chamber from above and is provided with a movable sealing ring at the extension position; the transmission chamber is provided with a positive pressure port connected to an air pump and a pressure gauge for detecting air pressure; when sealing gas is introduced into the positive pressure port, a positive pressure environment is formed in the transmission chamber and the transmission cavity to prevent the entry of external air.

[0021] By adopting the above technical solution, the positive pressure chamber provides a stable working environment for the axial magnetic coupler, preventing dust carried in the outside air from hindering the transmission of the magnetic coupler. The positive pressure environment formed by the sealing gas introduced into the positive pressure port further reduces the possibility of outside air entering, and also optimizes the working environment of the radial magnetic coupler. In addition, the pressure gauge monitors the air pressure in real time, which makes it easy to maintain the set positive pressure value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of a specific embodiment of the present invention;

[0023] Figure 2 This is a top view of a specific embodiment of the present invention;

[0024] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0025] Figure 4 for Figure 1 A magnified view of B in the middle. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] like Figure 1 — Figure 4As shown, this invention discloses a multi-purpose plant vacuum fermentation extraction integrated device, including a support 1 and a tank 2 mounted on the support 1. The tank 2 includes a top 21, a body 22, and a bottom 23 from top to bottom. A stirring motor 3 is installed above the top 21, and a paddle 4 driven by the stirring motor 3 is installed inside the body 22. The top 21 is provided with an upper end cap 211, which has a feeding port a, a feed inlet c, a vacuum port d, and a vent g. The feeding port a uses a vacuum transfer method to feed materials. The vent g is equipped with a valve for connecting to an air source or an oxygen source. The vacuum port d is equipped with a valve for connecting to a vacuum pump or an air pump. The body 22 is composed of an inner layer 221, a middle layer 222, and a heating chamber 224 located between the inner layer 221 and the middle layer 222. The outer side of the body 22 is also surrounded by an outer layer 223. The middle layer 222 is provided with a... The heating chamber 224 is connected to the steam inlet h, through which steam is introduced for heating or cooling water is introduced for cooling. The tank bottom 23 consists of a lower end cap 231, an outer end cap 232, and a constant temperature chamber 233 between the lower end cap 231 and the outer end cap 232. The constant temperature chamber 233 is connected to the heating chamber 224. The outer end cap 232 is equipped with a constant temperature probe 234, a constant temperature heating tube 235, and a steam outlet j. The lower end cap 231 is equipped with a discharge port k, which is equipped with a valve for discharging plant residue or a valve with a filter screen for discharging crude extract. The feeding port a, the inlet c, the vacuum port d, the vent g, the steam inlet h, and the constant temperature heating tube 235 work together to achieve the integration of fermentation and extraction functions, reducing the uncertainty factors brought to the product by the intermediate process, and can prepare high-quality fermented extracts and greatly improve the preparation efficiency. The above valves are generally quick-install ball valves.

[0029] The fermentation and extraction process is briefly described below:

[0030] Plant fermentation: Plant raw materials, fermentation bacteria, fermentation solvent, nutrients, pH adjuster, etc., are added into the inner layer 221 of the tank through the feeding port a. The constant temperature heating tube 235 is turned on to set the required fermentation temperature. The stirring motor 3 is turned on, and the stirring speed is set to the required fermentation speed using the constant speed paddle 4. Air or oxygen can be introduced for fermentation through the quick-connect vent g, or anaerobic fermentation can be performed by turning it off. After fermentation, the quick-connect ball valve discharge port k can be opened to filter and discharge the fermentation liquid, followed by the discharge of residue and other waste.

[0031] Plant Extraction: Plant raw materials, solvents, and other substances are fed into the inner layer 221 of the tank through the feeding port a. The constant temperature heating tube 235 is activated as needed to set the extraction temperature. A vacuum pump can be connected via the quick-connect ball valve vacuum port d to create negative pressure for low-temperature extraction of heat-sensitive plant components. Alternatively, an air pump can be connected to increase pressure for high-pressure, high-temperature extraction of hard-textured or difficult-to-dissolve plant raw materials. After extraction, the quick-connect ball valve discharge port k can be opened to filter and discharge the fermentation liquid, followed by the discharge of plant residue and other waste.

[0032] Plant fermentation followed by extraction: After fermentation, no discharge is required. Solvent is directly added into the inner layer 221 of the tank through the feeding port a. The constant temperature heating tube 235 is activated as needed to set the required extraction temperature. A vacuum pump can be connected via the quick-connect ball valve vacuum port d to create negative pressure for low-temperature extraction of heat-sensitive plant components. Alternatively, an air pump can be connected to increase pressure for high-pressure, high-temperature extraction of hard-textured or difficult-to-dissolve plant raw materials. After extraction, the quick-connect ball valve discharge port k can be opened to filter and discharge the fermentation liquid, followed by the removal of plant residue and other waste.

[0033] Plant extraction followed by fermentation: After extraction, the quick-connect ball valve outlet k can be opened to filter and discharge the fermentation liquid, followed by the discharge of plant residue and other waste. The discharged fermentation liquid is then poured back into the inner layer 221 of the tank. Fermentation bacteria, fermentation solvent, nutrients, pH adjuster, and other substances are added into the inner layer 221 of the tank through the feeding port a. The constant temperature heating tube 235 is turned on to set the required fermentation temperature as needed. The stirring motor 3 is turned on and the stirring speed is set to the required fermentation speed using the constant speed paddle 4. Air or oxygen can be introduced for fermentation as needed through the quick-connect vent g, or anaerobic fermentation can be performed by turning it off. After fermentation, the quick-connect ball valve outlet k can be opened to filter and discharge the fermentation liquid.

[0034] The upper end cap 211 is equipped with a sight glass b, a sight glass light port e, a pressure gauge port f, and a universal spray port l. The addition of sight glass b, sight glass light port e, pressure gauge port f, and universal spray port l makes the equipment more comprehensive.

[0035] The middle layer 222 of the tank body is equipped with a steam pressure port i for installing a safety valve. The addition of steam pressure port i makes the equipment safer.

[0036] It also includes a radial magnetic coupler. The upper end cap 211 is integrally provided with a transmission column 212 extending from top to bottom into the tank body 22. There are multiple paddles 4 arranged sequentially from top to bottom inside the tank body 22. The middle of the paddle 4 is provided with a mounting ring 41. The outer periphery of the transmission column 212 is provided with a rotating groove 2121 that corresponds to each paddle 4 and rotates in cooperation with the mounting ring 41. The transmission column 212 is provided with a transmission cavity 2122 in the vertical direction. The upper end of the transmission cavity 2122 is connected to the outside of the tank body 22, and the lower end is closed. The transmission cavity 2122 is provided with a rotating cavity 2122 in the vertical direction and is driven by the stirring motor 3. The drive shaft 213 rotates under the action. The radial magnetic coupler includes an outer rotor 411 and an inner rotor 2131. The outer rotor 411 is fixed to the inner circumference of each mounting ring 41, and the inner rotor 2131 is fixed to the outer circumference of the drive shaft 213 and corresponds one-to-one with each outer rotor 411. The outer rotor 411 and the inner rotor 2131 constitute the magnetic transmission engagement between the drive shaft 213 and the paddle 4. The drive shaft 213 and the paddle 4 are completely separated by the drive column 212 which is integrally set with the upper end cap 211. Torque is transmitted through the side wall of the drive column 212 through the radial magnetic coupler, preventing airborne bacteria from entering the tank from this position, thereby ensuring quality.

[0037] The lower end of the transmission column 212 is provided with a cover 214 that closes the transmission cavity 2122 and is welded and fixed. The lower end of the transmission cavity 2122 is provided with a bearing groove 2123 surrounding the transmission shaft 213 and a bearing 2124 installed between the bearing groove 2123 and the transmission shaft 213. The cover 214 confines the bearing 2124 within the bearing groove 2123. The lower end of the transmission cavity 2122 is closed by the cover 214. On the one hand, it facilitates the assembly of the transmission column 212 and the bearing 2124. On the other hand, the welding and fixing ensures the sealing effect.

[0038] It also includes an axial magnetic coupler. Above the upper end cap 211 is a motor platform 215 for fixing the stirring motor 3 and a lifting mechanism for driving the motor platform 215 to rise and fall. The stirring motor 3 can work with a reducer. Below the stirring motor 3 is a motor shaft 31 that rotates under the drive of the stirring motor 3. The axial magnetic coupler includes a front rotor 311 and a rear rotor 2132. The front rotor 311 is fixed to the lower end of the motor shaft 31, and the rear rotor 2132 is fixed to the upper end of the transmission shaft 213 and opposite to the front rotor 311. The front rotor 311 and the rear rotor 2132 constitute the magnetic coupling between the motor shaft 31 and the transmission shaft 213. To ensure effective mixing, the mixing force of the paddle 4, i.e., the torque output by the drive shaft 213, needs to be precisely controlled. Therefore, an axial magnetic coupler is used to connect the mixing motor 3 and the drive shaft 213. The maximum torque that can be transmitted is adjusted by adjusting the distance between the front rotor 311 and the rear rotor 2132. When the maximum torque is exceeded, the transmission between the mixing motor 3 and the drive shaft 213 will be automatically canceled. As fermentation progresses or the internal temperature rises, the mixing damping will gradually decrease, and the mixing motor 3 and the drive shaft 213 will resume transmission and continue mixing to ensure stable mixing.

[0039] The lifting mechanism includes a lifting motor 216 and multiple guide rods 2162. Each guide rod 2162 is fixed above the upper end cap 211 in the vertical direction. Due to obstruction of view, only one guide rod 2162 is shown in the attached figure. In this embodiment, there are three guide rods 2162, which are arranged in a rectangular pattern with the lifting motor 216. The guide rods 211 pass through the motor platform 215 and slide up and down with the motor platform 215. The lifting motor 216 is fixed above the upper end cap 211 and has a lifting screw 2161 that rotates under the drive of the lifting motor 216 in the vertical direction. The lifting screw 2161 passes through the motor platform 215 and is threadedly engaged with the motor platform 215. The multiple guide rods 2162 work together to achieve stable lifting and lowering of the motor platform 215. The lifting motor 216 drives the lifting screw 2161, which is threadedly engaged with the motor platform 215, to rotate, so that the height of the motor platform 215 can be precisely controlled, thereby precisely controlling the distance between the front rotor 311 and the rear rotor 2132.

[0040] The upper end cap 211 is located above the transmission chamber 2122 and has a transmission chamber 217 connected to the transmission chamber 2122. The front rotor 311 and the rear rotor 2132 are located inside the transmission chamber 217. The motor shaft 31 extends into the transmission chamber 217 from above and has a movable sealing ring 2171 at the extension position. The transmission chamber 217 is equipped with a positive pressure port 2172 connected to an air pump and a pressure gauge 2173 for detecting air pressure. When sealing gas is introduced into the positive pressure port 2172, a positive pressure environment is formed in the transmission chamber 217 and the transmission chamber 2122 to prevent outside air from entering. The positive pressure chamber provides a stable working environment for the axial magnetic coupler and prevents dust carried in the outside air from hindering the transmission of the magnetic coupler. The positive pressure environment formed by the sealing gas introduced into the positive pressure port 2172 further reduces the possibility of outside air entering and also optimizes the working environment of the radial magnetic coupler. In addition, the pressure gauge 2173 monitors the air pressure in real time to facilitate the maintenance of the set positive pressure value.

Claims

1. A multi-purpose plant vacuum fermentation and extraction integrated device, comprising a support frame and a tank mounted on the support frame, wherein the tank comprises, from top to bottom, a tank top, a tank body, and a tank bottom, wherein a stirring motor is disposed above the tank top, and a paddle rotating under the drive of the stirring motor is disposed inside the tank body, characterized in that: The tank top is equipped with an upper end cap, which has a feeding port, an inlet, a vacuum port, and a vent. The feeding port uses a vacuum transfer method to feed materials. The vent is equipped with a valve for connecting to an air source or an oxygen source. The vacuum port is equipped with a valve for connecting to a vacuum pump or an air pump. The tank body consists of an inner tank layer, a middle tank layer, and a heating chamber located between the inner and middle tank layers. The middle tank layer has a steam inlet connected to the heating chamber. The steam inlet is used for heating with steam or for cooling with cooling water. The tank bottom consists of a lower end cap, an outer end cap, and a constant temperature chamber between the lower and outer end caps. The constant temperature chamber is connected to the heating chamber. The outer end cap is equipped with a constant temperature probe, a constant temperature heating pipe, and a steam outlet. The lower end cap has a discharge port, which is equipped with a valve for discharging plant residue or a valve with a filter screen for discharging crude extract.

2. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 1, characterized in that: The upper end cap is equipped with a sight glass, a sight glass light port, a pressure gauge port, and a universal spray port.

3. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 1, characterized in that: The middle layer of the tank body is provided with a steam pressure port for installing a safety valve.

4. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 1, characterized in that: It also includes a radial magnetic coupler. The upper end cap is integrally provided with a transmission column extending from top to bottom into the tank body. The number of paddles is multiple and arranged sequentially from top to bottom inside the tank body. The paddles are provided with a mounting ring in the middle. The outer periphery of the transmission column is provided with a rotating groove that corresponds to each paddle and rotates with the mounting ring. The transmission column is provided with a transmission cavity in the vertical direction. The upper end of the transmission cavity is connected to the outside of the tank body, and the lower end is closed. The transmission shaft is provided in the vertical direction inside the transmission cavity and rotates with the transmission cavity and is driven by the stirring motor. The radial magnetic coupler includes an outer rotor and an inner rotor. The outer rotor is fixed to the inner periphery of each mounting ring, and the inner rotor is fixed to the outer periphery of the transmission shaft and corresponds to each outer rotor. The outer rotor and the inner rotor constitute the magnetic transmission engagement between the transmission shaft and the paddles.

5. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 4, characterized in that: The lower end of the transmission column is provided with a sealed cover that encloses the transmission cavity and is welded and fixed. The lower end of the transmission cavity is provided with a bearing groove surrounding the transmission shaft and a bearing installed between the bearing groove and the transmission shaft. The cover confines the bearing within the bearing groove.

6. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 4, characterized in that: It also includes an axial magnetic coupler. Above the upper end cap, there is a motor platform for fixing the stirring motor and a lifting mechanism for driving the motor platform to rise and fall. Below the stirring motor, there is a motor shaft that rotates under the drive of the stirring motor. The axial magnetic coupler includes a front rotor and a rear rotor. The front rotor is fixed to the lower end of the motor shaft, and the rear rotor is fixed to the upper end of the transmission shaft and is opposite to the front rotor. The front rotor and the rear rotor constitute a magnetic transmission engagement between the motor shaft and the transmission shaft.

7. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 6, characterized in that: The lifting mechanism includes a lifting motor and multiple guide rods. Each guide rod is fixed above the upper end cap in the vertical direction. The guide rod passes through the motor platform and slides up and down with the motor platform. The lifting motor is fixed above the upper end cap and has a lifting screw that rotates under the drive of the lifting motor in the vertical direction. The lifting screw passes through the motor platform and is threadedly engaged with the motor platform.

8. The multi-purpose plant vacuum fermentation and extraction integrated equipment according to claim 6, characterized in that: The upper end cap is located above the transmission cavity and has a transmission chamber connected to the transmission cavity. The front rotor and the rear rotor are located inside the transmission chamber. The motor shaft extends into the transmission chamber from above and has a movable sealing ring at the extension position. The transmission chamber is equipped with a positive pressure port connected to an air pump and a pressure gauge for detecting air pressure. When sealing gas is introduced into the positive pressure port, a positive pressure environment is formed in the transmission chamber and the transmission cavity to prevent outside air from entering.

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