A biological fermentation test detection device

Abstract

The application provides a biological fermentation test detection device, which comprises a tank body, a transmission shaft, a piston cylinder and a detection assembly; the transmission shaft is vertically arranged in the tank body, and a piston cavity is hollowly arranged in the transmission shaft; the piston cylinder is slidably arranged in the piston cavity along the axial direction of the transmission shaft; a plurality of air permeation holes, which are in communication with the inside and outside of the piston cavity, are arranged on the side wall of the piston cavity along the axial direction of the transmission shaft; a cavity is arranged in the piston cylinder, and a plurality of air inlet ports are arranged on the side wall of the piston cylinder along the axial direction of the transmission shaft; one pair and only one pair of the air inlet ports and the air permeation holes are in butt joint communication by axially pulling the piston cylinder, and the non-air-inlet-port cylinder wall region of the piston cylinder blocks the remaining air permeation holes. The application can detect the fermentation conditions at different depths in the fermentation tank in real time according to the needs, so that problems can be found in time and corresponding treatment can be carried out, and the application is simple and convenient.

Description

Technical Field

[0001] This invention relates to the fields of biomedicine and testing technology, and in particular to a bio-fermentation testing device. Background Technology

[0002] Bio-fermentation engineering is an important component of bioengineering, in which microorganisms utilize carbohydrates to produce various industrial solvents and chemical raw materials. Ethanol, acetone-butanol, butanol-isopropanol, acetone-ethanol, 2,3-butanediol, and glycerol fermentation are products of microbial solvent fermentation and are also important production materials in the current chemical industry.

[0003] In the typical process of bio-fermentation, it is necessary to maintain a suitable ambient temperature to create a suitable growth environment for microorganisms. At the same time, in order to make the fermentation process more thorough and uniform, it is necessary to mix and stir regularly or continuously during the fermentation process.

[0004] In existing technologies, different types of raw materials need to be added before or during fermentation, and these materials need to be fully and uniformly mixed together. For example, when using microbial strains to produce glutamic acid (e.g., γ-polyglutamic acid), auxiliary raw materials such as leucine need to be added during fermentation. Current mixing equipment is inefficient and has poor uniformity, making it impossible to add and stir auxiliary raw materials at any time during fermentation.

[0005] Furthermore, during the bio-fermentation process, bio-fermentation detection devices are often needed to monitor the bio-fermentation process in the fermenter in real time, so as to promptly identify problems and take appropriate measures. However, when the fermenter is large, the fermentation conditions vary at different depths, and existing detection devices cannot quickly detect the fermentation conditions at different depths. Summary of the Invention

[0006] The purpose of this invention is to provide a bio-fermentation testing and detection device to solve at least one of the aforementioned technical problems existing in the prior art. This application is a divisional application of the invention patent application filed on March 14, 2023, with application number "2023102398597" and title "A Bio-fermentation Mixing Device with Testing and Detection Function".

[0007] To solve the above-mentioned technical problems, the present invention provides a biological fermentation mixing device with inspection and detection function, comprising: a tank (such as a fermentation tank or a cylindrical body), a drive motor, a transmission shaft, a stirring component, a piston cylinder, and a detection component; The drive shaft is rotatably mounted inside the tank, and one end of the drive shaft is connected to the power output shaft of the drive motor. The stirring element is mounted on the drive shaft and is used to stir the material inside the tank. The drive shaft has a hollow piston chamber, and the piston cylinder is rotatably disposed within the piston chamber; The piston chamber has multiple vent holes that connect the inside and outside of the piston chamber at intervals along the axial direction of the drive shaft on its side wall. The piston cylinder has a cavity inside, and multiple air inlets are spaced apart on the side wall of the piston cylinder along the axial direction of the drive shaft; and the air inlets are arranged one-to-one with the vent holes in the axial direction of the drive shaft; and multiple air inlets are spaced apart in the circumferential direction of the piston cylinder. By rotating the piston cylinder, one pair and one pair of air inlets and vents can be selectively connected, and the non-air inlet area of ​​the piston cylinder wall can block the remaining vents. The detection component is used to detect gas or liquid entering the cavity through the vent and inlet.

[0008] Furthermore, on the projected cross section perpendicular to the axial direction of the piston cylinder, and in the circumferential direction of the piston cylinder, a plurality of air inlets are evenly spaced.

[0009] Furthermore, the detection component includes a pH meter disposed in the piston cylinder cavity for detecting the pH value of the liquid flowing into the piston cylinder cavity.

[0010] Furthermore, the detection component includes a temperature sensor disposed in the piston cylinder cavity for detecting the temperature of the liquid flowing into the piston cylinder cavity.

[0011] Furthermore, the detection component includes a capillary viscometer disposed in the piston cylinder cavity for detecting the viscosity value of the liquid flowing into the piston cylinder cavity.

[0012] Preferably, the pH meter, temperature sensor, and capillary viscometer are located at the bottom of the piston cylinder cavity.

[0013] Furthermore, it also includes a gas conduit, the inner end of which extends from the outside of the tank into the cavity of the piston cylinder to exhaust the gas in the cavity, and the outer end of which is connected to a gas analyzer to detect and analyze the gas in the cavity.

[0014] Among them, the gas analyzer is an existing technology, for example, for detecting the concentration of gases such as nitric oxide (NO gas), nitrogen dioxide (NO2 gas) and sulfur dioxide (SO2 gas).

[0015] Preferably, an air pump is provided on the outside of the tank and on the gas conduit to force the gas to flow to the gas analyzer.

[0016] Furthermore, the drive motor is located at the bottom of the tank; the transmission shaft is vertically installed inside the tank. The drive motor has a through hole inside its power output shaft; It also includes a main shaft, the inner end of which extends through the through hole into the piston chamber of the drive shaft and is fixedly connected to the piston cylinder; The outer end of the main shaft extends out of the through hole, and the piston cylinder is rotated by the main shaft.

[0017] Preferably, the main shaft and the transmission shaft are fixedly connected by locking components such as locking nuts. When the transmission shaft rotates, the locking nuts are used to lock and fix the two together. When the transmission shaft is stationary, the locking nuts are loosened, allowing the piston cylinder to rotate relative to the transmission shaft, thereby selecting vent holes and air inlets of different depths for connection.

[0018] Preferably, the locking nut is screwed onto the external thread section of the spindle. The locking nut has a frustoconical outer circle. By screwing the locking nut into the through hole, the frustoconical outer circle fits tightly against the edge of the through hole, thereby locking and fixing the spindle and the drive shaft. Of course, other locking and fixing methods can also be used.

[0019] Furthermore, the main shaft is provided with a liquid inlet through both ends, which communicates with the cavity of the piston cylinder to drain the liquid inside the piston cylinder.

[0020] When it is necessary to check the fermentation degree at different levels, the accumulated liquid can be drained through the infusion port to avoid affecting the subsequent test results. Cleaning water can also be introduced into the piston cylinder and then discharged through the infusion port, further improving the accuracy of the test.

[0021] Preferably, an end cap is provided at the outer end of the infusion port.

[0022] Furthermore, the gas conduit extends into the piston cylinder cavity through the infusion port.

[0023] Furthermore, the inner end of the gas conduit extends into the upper middle part of the piston cylinder cavity.

[0024] The main shaft can be rotated manually to drive the piston cylinder to rotate, or an actuator such as a stepper motor can be used to drive the piston cylinder to rotate.

[0025] The second aspect of this application discloses a bio-fermentation mixing device with testing and detection function according to a second embodiment, or a bio-fermentation testing and detection device, which includes: a tank, a drive shaft, a piston cylinder, and a detection component. The drive shaft is vertically installed inside the tank, and a piston chamber is hollow inside the drive shaft; The piston cylinder is slidably disposed within the piston chamber along the axial direction of the transmission shaft; The piston chamber has multiple vent holes that connect the inside and outside of the piston chamber at intervals along the axial direction of the drive shaft on its side wall. The piston cylinder is provided with a cavity, and multiple air inlets are provided at intervals along the axial direction of the transmission shaft on the side wall of the piston cylinder. By pulling the piston cylinder axially, one pair and one pair of air inlets and vents can be selectively connected, and the non-air inlet cylinder wall area of ​​the piston cylinder can block the remaining vents. The detection component is used to detect gas or liquid entering the cavity through the vent and inlet.

[0026] Preferably, the vent holes and the air inlets are arranged in a one-to-one correspondence; the interval between two adjacent vent holes is not equal to the interval between two adjacent air inlets.

[0027] Furthermore, the number of the vent holes and the air inlets is set to n, where n is a natural number greater than 2; The n ventilation holes are evenly spaced along the axial direction of the drive shaft; Along the axial direction of the drive shaft, the intervals between two adjacent air inlets are arranged in an arithmetic sequence.

[0028] Preferably, the difference between the minimum interval between the n air inlets and the interval between two adjacent air vents is greater than or equal to (n-1) times the arithmetic progression.

[0029] Furthermore, the difference in diameter is greater than the diameter of the air inlet and the vent.

[0030] Furthermore, a guide groove is provided on the side wall of the piston chamber along the axial direction of the transmission shaft, and a guide protrusion (such as a guide key or guide bar) adapted to the guide groove is provided on the outer circle of the piston cylinder to prevent the piston cylinder from rotating relative to the transmission shaft.

[0031] All the air inlets are arranged on the same axial straight line, and similarly, all the vent holes are arranged on the same axial straight line.

[0032] Furthermore, the detection component includes a pH meter disposed in the piston cylinder cavity for detecting the pH value of the liquid flowing into the piston cylinder cavity.

[0033] Furthermore, the detection component includes a temperature sensor disposed in the piston cylinder cavity for detecting the temperature of the liquid flowing into the piston cylinder cavity.

[0034] Furthermore, the detection component includes a capillary viscometer disposed in the piston cylinder cavity for detecting the viscosity value of the liquid flowing into the piston cylinder cavity.

[0035] Preferably, the pH meter, temperature sensor, and capillary viscometer are located at the bottom of the piston cylinder cavity.

[0036] Furthermore, it also includes a gas conduit, the inner end of which extends from the outside of the tank into the cavity of the piston cylinder to exhaust the gas in the cavity, and the outer end of which is connected to a gas analyzer to detect and analyze the gas in the cavity.

[0037] Among them, the gas analyzer is an existing technology, for example, for detecting the concentration of gases such as nitric oxide (NO gas), nitrogen dioxide (NO2 gas) and sulfur dioxide (SO2 gas).

[0038] Preferably, an air pump is provided on the outside of the tank and on the gas conduit to force the gas to flow to the gas analyzer.

[0039] Furthermore, it also includes a drive motor and a stirring component; The drive shaft is rotatably mounted inside the tank; the drive motor is located at the bottom of the tank; the power output shaft of the drive motor extends from bottom to top into the tank and connects to the drive shaft; the agitator is mounted on the drive shaft and is used to agitate the material inside the tank.

[0040] Furthermore, a through hole is provided inside the power output shaft of the drive motor; It also includes a main shaft (or connecting rod / shaft, etc.), the inner end of which extends through the through hole into the piston chamber of the drive shaft and is fixedly connected to the piston cylinder; The outer end of the main shaft extends out of the through hole, and the piston cylinder is driven to move axially along the transmission shaft via the main shaft.

[0041] Preferably, the main shaft and the transmission shaft are fixedly connected by locking components such as locking nuts. When the transmission shaft rotates, the locking nuts are used to lock and fix the two together. When the transmission shaft is stationary, the locking nuts are loosened, allowing the piston cylinder to slide along the axial direction, thereby selecting vent holes and air inlets of different depths for docking.

[0042] Preferably, the locking nut is screwed onto the external thread section of the spindle. The locking nut has a frustoconical outer circle. By screwing the locking nut into the through hole, the frustoconical outer circle fits tightly against the edge of the through hole, thereby locking and fixing the spindle and the drive shaft. Of course, other locking and fixing methods can also be used.

[0043] Furthermore, the main shaft is provided with a liquid inlet through both ends, which communicates with the cavity of the piston cylinder to drain the liquid inside the piston cylinder.

[0044] When it is necessary to check the degree of fermentation at different depths, the accumulated liquid can be drained through the infusion hole to avoid affecting the test results later.

[0045] Preferably, an end cap is provided at the outer end of the infusion port.

[0046] Furthermore, the gas conduit extends into the piston cylinder cavity through the infusion port.

[0047] Furthermore, the inner end of the gas conduit extends into the upper middle part of the piston cylinder cavity.

[0048] The piston cylinder can be moved by manually pulling the main shaft, or by using an electric telescopic mechanism or other actuator.

[0049] By adopting the above technical solution, the present invention has the following beneficial effects: The present invention provides a bio-fermentation mixing device with inspection and detection function. During the bio-fermentation process, the fermentation status at different depths in the fermentation tank can be detected in real time as needed, so as to promptly detect problems and take corresponding measures. It is simple and convenient. Attached Figure Description

[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the mixing device provided in Embodiment 1 of the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of the bio-fermentation testing and detection device provided in Embodiment 2 of the present invention; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the mixing device in Example 3; Figure 6 This is a schematic diagram of the feeding mechanism in Embodiment 3 of the present invention; Figure 7 for Figure 6 A schematic diagram of the structure of the central distribution plate after it has been cut open; Figure 8 This is a diagram showing the installation structure of the control cover in Example 4; Figure 9 for Figure 8 A schematic diagram of the structure of the control cover plate section after it has been cut open; Figure 10 This is a schematic diagram illustrating the working principle of the mixing device provided in Embodiment 5 of the present invention.

[0052] Figure label: 1-Drive motor; 1a-Power output shaft; 1b-Locking nut; 10-Tank body; 11-Fixed frame; 20-Drive shaft; 21-Speed ​​limiting clutch; 22-Ventilation hole; 23-Piston chamber; 30-Agitator; 40-Feeding mechanism; 41-Diverter plate; 42-Discharge cylinder; 42a-Discharge hole; 42b-Guide groove; 43-Control cover plate; 43a-Plug; 44-Feed hopper; 45-Feed pipe; 46-Guide pipe; 47-Reset spring; 48-Counterweight; 49-Guide rod; 50-Piston cylinder; 51-Cavity; 52-Air inlet; 53-Main shaft; 54-Gas conduit; 60-Detection component; 61-Gas analyzer; 62-Air pump. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0056] The present invention will be further explained below with reference to specific embodiments.

[0057] Example 1 like Figure 1-2 As shown, this embodiment provides a biological fermentation mixing device with testing and detection functions, including: a tank 10 (such as a fermentation tank or a cylindrical body), a drive motor 1, a transmission shaft 20, a stirring component 30, a piston cylinder 50, and a detection component 60; The drive shaft 20 is rotatably disposed inside the tank 10, and one end of the drive shaft 20 is connected to the power output shaft 1a of the drive motor 1; the stirring element 30 is disposed on the drive shaft 20 and is used to stir the material inside the tank 10; a piston chamber 23 is hollowly disposed inside the drive shaft 20, and the piston cylinder 50 is rotatably disposed inside the piston chamber 23; a plurality of vent holes 22 communicating with the inside and outside of the piston chamber 23 are spaced along the axial direction of the drive shaft 20 on the side wall of the piston chamber 23; a cavity 51 is disposed inside the piston cylinder 50, and the piston cylinder 50 has a cavity 51 on the side wall of the piston cylinder 50. Multiple air inlets 52 are spaced apart along the axial direction of the drive shaft 20 on the wall; and in the axial direction of the drive shaft 20, the air inlets 52 are arranged one-to-one with the vent holes 22; and in the circumferential direction of the piston cylinder 50, multiple air inlets 52 are spaced apart; by rotating the piston cylinder 50, one pair and one unique pair of air inlets 52 and vent holes 22 can be selectively connected, and the non-air inlet cylinder wall area of ​​the piston cylinder 50 can block the remaining vent holes 22; the detection component 60 is used to detect the gas or liquid entering the cavity 51 through the vent holes 22 and air inlets 52.

[0058] Furthermore, on the projected section perpendicular to the axial direction of the piston cylinder 50, and in the circumferential direction of the piston cylinder 50, a plurality of air inlets 52 are evenly spaced.

[0059] The detection assembly 60 includes a pH meter, a temperature sensor, and a capillary viscometer disposed within the cavity 51 of the piston cylinder 50. The pH meter is used to detect the pH value of the liquid flowing into the cavity 51 of the piston cylinder 50. The temperature sensor is used to detect the temperature of the liquid flowing into the cavity 51 of the piston cylinder 50. The capillary viscometer is used to detect the viscosity value of the liquid flowing into the cavity 51 of the piston cylinder 50. Preferably, the pH meter, temperature sensor, and capillary viscometer are disposed at the bottom of the cavity 51 of the piston cylinder 50.

[0060] This embodiment also includes a gas conduit 54. The inner end of the gas conduit 54 extends from the outside of the tank 10 into the cavity 51 of the piston cylinder 50 to export the gas in the cavity 51. The outer end of the gas conduit 54 is connected to a gas analyzer 61 to detect and analyze the gas in the cavity 51.

[0061] The gas analyzer 61 is existing technology, used for detecting the concentrations of gases such as nitric oxide (NO), nitrogen dioxide (NO2), and sulfur dioxide (SO2). Preferably, a gas pump 62 is provided outside the tank 10 and on the gas conduit 54 to force the gas to flow to the gas analyzer 61.

[0062] Furthermore, the drive motor 1 is disposed at the bottom of the tank body 10; the transmission shaft 20 is vertically disposed inside the tank body 10; a through hole is provided in the power output shaft 1a of the drive motor 1; and a main shaft 53 is also included, the inner end of the main shaft 53 extending through the through hole into the piston chamber 23 of the transmission shaft 20 and fixedly connected to the piston cylinder 50; the outer end of the main shaft 53 extends out of the through hole, and the piston cylinder 50 can be rotated through the main shaft 53.

[0063] Preferably, the main shaft 53 and the transmission shaft 20 are fixedly connected using locking components such as a locking nut 1b. When the transmission shaft 20 rotates, the locking nut 1b locks them in place. When the transmission shaft 20 is stationary, the locking nut 1b is loosened, allowing the piston cylinder 50 to rotate relative to the transmission shaft 20, thus enabling the connection of vent holes 22 and air inlets 52 with different depths. The locking nut 1b is screwed onto the external thread section of the main shaft 53 and has a frustoconical outer circle. By screwing the locking nut 1b into the through hole, the frustoconical outer circle fits tightly against the edge of the through hole, thereby locking the main shaft 53 and the transmission shaft 20 in place. Of course, other locking methods can also be used.

[0064] Furthermore, the main shaft 53 is provided with a liquid inlet hole extending through both ends, which communicates with the cavity 51 of the piston cylinder 50 to drain the liquid inside the piston cylinder 50. When it is necessary to check the degree of fermentation at different depths, the accumulated liquid can be drained through the liquid inlet hole to avoid affecting the subsequent test results. Preferably, an end cap is provided at the outer end of the liquid inlet hole.

[0065] In this embodiment, the gas conduit 54 extends into the cavity 51 of the piston cylinder 50 through the infusion port. The inner end of the gas conduit 54 extends into the upper middle part of the cavity 51 of the piston cylinder 50.

[0066] The main shaft 53 can be rotated manually to drive the piston cylinder 50 to rotate, or an actuator such as a stepper motor can be used to drive the piston cylinder 50 to rotate.

[0067] In the process of biological fermentation, this invention can detect the fermentation status at different depths in the fermentation tank in real time as needed, so as to promptly identify problems and take corresponding measures, which is simple and convenient.

[0068] Example 2 This embodiment discloses a second implementation of a bio-fermentation mixing device with testing and detection functions, or a bio-fermentation testing and detection device.

[0069] Reference Figure 3 and Figure 4 As shown, in this embodiment, the bio-fermentation testing device includes: a tank 10, a drive shaft 20, a piston cylinder 50, and a detection component 60; the drive shaft 20 is vertically arranged inside the tank 10, and a piston chamber 23 is hollowly arranged inside the drive shaft 20; the piston cylinder 50 is slidably arranged in the piston chamber 23 along the axial direction of the drive shaft 20; a plurality of vent holes 22 communicating with the inside and outside of the piston chamber 23 are arranged at intervals along the axial direction of the drive shaft 20 on the side wall of the piston chamber 23; a cavity 51 is provided inside the piston cylinder 50, and a plurality of air inlets 52 are arranged at intervals along the axial direction of the drive shaft 20 on the side wall of the piston cylinder 50; by pulling the piston cylinder 50 axially, one pair and one unique pair of air inlets 52 and vent holes 22 can be selectively connected, and the non-air inlet cylinder wall area of ​​the piston cylinder 50 can block the remaining vent holes 22; the detection component 60 is used to detect the gas or liquid entering the cavity 51 through the vent holes 22 and air inlets 52.

[0070] All the air inlets 52 are arranged on the same axial straight line, and similarly, all the vent holes 22 are arranged on the same axial straight line.

[0071] Preferably, the vent holes 22 and the air inlets 52 are arranged in a one-to-one correspondence; the interval between two adjacent vent holes 22 is not equal to the interval between two adjacent air inlets 52.

[0072] Preferably, the number of vent holes 22 and air inlets 52 is set to n, where n is a natural number greater than 2; the n vent holes 22 are evenly spaced along the axial direction of the drive shaft 20; and the intervals between adjacent air inlets 52 along the axial direction of the drive shaft 20 are arranged in an arithmetic progression. Preferably, the difference between the minimum interval between the n air inlets 52 and the interval between adjacent vent holes 22 is greater than or equal to (n-1) times the arithmetic progression. Furthermore, the arithmetic progression is greater than the diameter of the air inlets 52 and the vent holes 22. This effectively prevents two pairs of air inlets 52 and vent holes 22 from connecting during the pulling process.

[0073] Alternatively, a guide groove is provided on the side wall of the piston chamber 23 along the axial direction of the transmission shaft 20, and a guide protrusion (e.g., a guide key or guide bar) adapted to the guide groove is provided on the outer circle of the piston cylinder 50 to prevent the piston cylinder 50 from rotating relative to the transmission shaft 20.

[0074] The detection component 60 includes a pH meter disposed in the cavity 51 of the piston cylinder 50 for detecting the pH value of the liquid flowing into the cavity 51 of the piston cylinder 50.

[0075] The detection component 60 also includes a temperature sensor disposed in the cavity 51 of the piston cylinder 50 for detecting the temperature of the liquid flowing into the cavity 51 of the piston cylinder 50.

[0076] Additionally, the detection component 60 includes a capillary viscometer disposed in the cavity 51 of the piston cylinder 50 for detecting the viscosity value of the liquid flowing into the cavity 51 of the piston cylinder 50.

[0077] Preferably, the pH meter, temperature sensor, and capillary viscometer are disposed at the bottom of the cavity 51 of the piston cylinder 50.

[0078] In this embodiment, a gas conduit 54 is also included. The inner end of the gas conduit 54 extends from the outside of the tank 10 into the cavity 51 of the piston cylinder 50 to export the gas in the cavity 51. The outer end of the gas conduit 54 is connected to a gas analyzer 61 to detect and analyze the gas in the cavity 51.

[0079] Among them, the gas analyzer 61 is an existing technology, for example, for detecting the concentration of gases such as nitric oxide (NO gas), nitrogen dioxide (NO2 gas) and sulfur dioxide (SO2 gas).

[0080] Preferably, an air pump 62 is provided outside the tank 10 and on the gas conduit 54 to force the gas to flow to the gas analyzer 61.

[0081] Furthermore, it also includes a drive motor 1 and a stirring component 30; the transmission shaft 20 is rotatably disposed inside the tank body 10; the drive motor 1 is disposed at the bottom of the tank body 10; the power output shaft 1a of the drive motor 1 extends from bottom to top into the tank body 10 and is connected to the transmission shaft 20; the stirring component 30 is disposed on the transmission shaft 20 and is used to stir the material inside the tank body 10.

[0082] The drive motor 1 has a through hole in its power output shaft 1a; it also includes a main shaft 53, the inner end of which extends through the through hole into the piston chamber 23 of the transmission shaft 20 and is fixedly connected to the piston cylinder 50; the outer end of the main shaft 53 extends out of the through hole, and the piston cylinder 50 can be moved axially along the transmission shaft 20 by the main shaft 53.

[0083] Preferably, the main shaft 53 and the transmission shaft 20 are fixedly connected by locking components such as locking nuts 1b. When the transmission shaft 20 rotates, the locking nuts 1b are used to lock and fix the two together. When the transmission shaft 20 is stationary, the locking nuts 1b are loosened, allowing the piston cylinder 50 to slide along the axial direction, thereby selecting the vent holes 22 and air inlets 52 of different depths to connect.

[0084] Preferably, the locking nut 1b is screwed onto the external thread section of the main shaft 53. The locking nut 1b has a frustoconical outer circle. By screwing the locking nut 1b into the through hole, the frustoconical outer circle is tightly pressed against the edge of the through hole, thereby locking and fixing the main shaft 53 and the drive shaft 20. Of course, other locking and fixing methods can also be used.

[0085] The main shaft 53 is provided with a liquid inlet that extends through both ends. The liquid inlet is connected to the cavity 51 of the piston cylinder 50 and is used to drain the liquid from the piston cylinder 50.

[0086] When it is necessary to check the degree of fermentation at different depths, the accumulated liquid can be drained through the infusion port to avoid affecting the subsequent test results. Preferably, an end cap is provided at the outer end of the infusion port.

[0087] Furthermore, the gas conduit 54 extends into the cavity 51 of the piston cylinder 50 through the infusion port. The inner end of the gas conduit 54 extends into the upper middle part of the cavity 51 of the piston cylinder 50.

[0088] The piston cylinder 50 can be moved by manually pulling the main shaft 53, or by using an electric telescopic mechanism or other actuators.

[0089] Example 3 This embodiment is basically the same as embodiment 1 or 2, except that: like Figure 5-7 As shown, the mixing device provided in this embodiment also includes a feeding mechanism 40, which includes a diversion plate 41 and a discharge cylinder 42; the diversion plate 41 is provided with a receiving chamber, and the discharge cylinder 42 is provided with a flow channel; The diverter plate 41 is fixedly mounted on top of the drive shaft 20; the discharge cylinder 42 is vertically mounted inside the tank 10, and its top is fixedly connected to the diverter plate 41; the flow channel inside the discharge cylinder 42 communicates with the receiving chamber inside the diverter plate 41; the discharge cylinder 42 is provided with multiple discharge holes 42a, which are spaced apart in the height direction and communicate with the flow channel. The material in the receiving chamber of the diverter plate 41 flows into the tank 10 sequentially through the flow channel and the discharge holes 42a. In this embodiment, the receiving chamber of the diverter plate 41 is connected to the flow channel of the discharge cylinder 42 through a guide pipe 46. Spoke-like connectors can also be added to the discharge cylinder 42 and the drive shaft 20 and / or the diverter plate 41 to increase the connection strength.

[0090] More preferably, in the radial direction of the drive shaft 20, the discharge hole 42a is provided on the outer end face of the discharge cylinder 42. During operation, the material is thrown out of the discharge hole 42a under the action of centrifugal force.

[0091] Multiple discharge cylinders 42 are spaced apart along the circumference of the drive shaft 20 and the distribution plate 41. In the projection plane perpendicular to the drive shaft 20, and along the circumference of the drive shaft 20, the discharge cylinders 42 can be positioned between two adjacent (or two rows of) agitators 30. The cross-section of the discharge cylinder 42 is generally fan-shaped. In the radial direction of the drive shaft 20 (or tank 10), the discharge cylinders 42 are positioned in the middle of the tank 10, whereby later-added materials are conveyed into the interior of previously added materials, and then uniformly distributed by the rotation and agitation of the agitators 30.

[0092] Another implementation is that the discharge cylinder 42 is arranged on the outside of the agitator 30 in the radial direction of the drive shaft 20 (or the tank 10). This arrangement is simpler, and the discharge cylinder 42 and the agitator 30 can be rotated relative to each other, thus making it more flexible.

[0093] This embodiment also includes a feeding hopper 44, which is generally funnel-shaped. The feeding hopper 44 is fixedly mounted above the tank body 10 by a fixing frame 11. The feeding hopper 44 has a feeding port at the top and a discharging port at the bottom. The top of the diversion plate 41 has a material inlet. The discharging port and the material inlet of the feeding hopper 44 are arranged vertically opposite each other. The material poured into the feeding hopper 44 flows into the receiving chamber of the diversion plate 41 through the discharging port and the material inlet.

[0094] In this embodiment, the diversion plate 41 is disposed inside the tank body 10; and it also includes a feed pipe 45, the lower end of which is fixedly connected to the material inlet of the diversion plate 41, and the upper end of which is connected to the discharge port of the feed hopper 44. The feed pipe 45 rotates with the diversion plate 41.

[0095] Preferably, a sealed bearing is provided between the upper end of the feed pipe 45 and the discharge port of the feed hopper 44; a sealed bearing is also provided between the feed pipe 45 and the opening of the tank body 10, to simultaneously seal the gaps between the feed pipe 45 and the opening of the tank body 10 and the discharge port of the feed hopper 44. The feed hopper 44, the receiving chamber of the diverter plate 41, and the flow channel inside the discharge cylinder 42 form a material conveying channel from the outside of the tank body 10 to the inside of the tank body 10.

[0096] In this embodiment, the materials are mixed more evenly, and the mixing efficiency is greatly improved.

[0097] Example 4 This embodiment is basically the same as embodiment 3, except that: like Figure 5-9 As shown, in the mixing device disclosed in this embodiment, a control cover plate 43 is also provided inside the tank body 10; the control cover plate 43 is movably disposed on the outside of the discharge cylinder 42 in the radial direction of the transmission shaft 20, and a plug 43a is provided on one side of the discharge cylinder 42 of the control cover plate 43, the plug 43a is adapted to the discharge hole 42a and is used to block the discharge hole 42a. This embodiment also includes a return spring 47, which is disposed between the control cover plate 43 and the discharge cylinder 42. The return spring 47 tends to force the control cover plate 43 closer to the discharge cylinder 42, thereby causing the plug 43a to be inserted into the discharge hole 42a and thus blocking the discharge hole 42a. In this embodiment, the return spring 47 is an arc-shaped or bow-shaped spring.

[0098] When the drive shaft 20 and the agitator 30 are stationary, under the action of the return spring 47, the plug 43a is inserted into the discharge hole 42a, sealing the discharge hole 42a, and thus sealing the material input channels from the feed hopper 44, the diversion plate 41, and the discharge cylinder 42, thereby achieving the sealing of the tank 10 and helping to form a closed environment suitable for biological fermentation.

[0099] During fermentation, the electric heating element 2 can be turned on as needed to heat the material and maintain a good working temperature.

[0100] Furthermore, when stirring is required, it is not necessary to open the tank 10 and start the drive motor 1. The drive motor 1 drives the stirring component 30 and the discharge cylinder 42 to rotate at low speed through the transmission shaft 20. At this time, the centrifugal force is less than the elastic force of the return spring 47. The plug 43a always blocks the material conveying channel during the stirring process, thereby maintaining a sealed working environment.

[0101] During the fermentation process or other operations, when auxiliary materials need to be added, the auxiliary materials are poured into the feed hopper 44, and the drive motor 1 is started. The drive motor 1 drives the stirring component 30 and the discharge cylinder 42 to rotate through the transmission shaft 20. When the speed exceeds the set value, the centrifugal force is greater than the elastic force of the return spring 47. Under the action of centrifugal force, the control cover plate 43 moves radially outward with the plug 43a. The plug 43a disengages from the discharge hole 42a, releasing the blockage of the material conveying channel. The auxiliary materials flow into the tank 10 from the conveying channel.

[0102] More preferably, it also includes a counterweight 48, which is fixedly connected to the control cover plate 43; thereby improving the stability of the entire control system.

[0103] Preferably, the discharge cylinder 42 is provided with a guide groove 42b, which is arranged radially along the drive shaft 20; the control cover plate 43 is connected to the guide groove 42b via a guide rod 49. Specifically, the guide rod 49 is slidably inserted into the guide groove 42b, and one end of the guide rod 49 is fixedly connected to the control cover plate 43; the other end of the guide rod 49 is provided with a limiting platform to prevent the guide rod 49 from completely disengaging from the guide groove 42b under centrifugal force. Optionally, one end of the return spring 47 abuts against the limiting platform, and the other end abuts against the discharge cylinder 42. After being compressed, the return spring 47 tends to move towards the control cover plate 43 and is forced to approach the discharge cylinder 42.

[0104] In the vertical direction, the top and bottom of the discharge cylinder 42 are respectively provided with a set of guide grooves 42b and guide rods 49 forming a guide limiting structure.

[0105] Preferably, the counterweight 48 is fixedly disposed at the other end of the guide rod 49, serving as a limiting platform to limit movement.

[0106] Example 5 This embodiment is basically the same as embodiment 4, except that: like Figure 10 As shown, in this embodiment, the discharge cylinder 42 is arranged on the outside of the stirring member 30 in the radial direction of the drive shaft 20 (or the tank body 10).

[0107] The distributor plate 41 is connected to the drive shaft 20 via a speed limiting clutch 21. Specifically, both ends of the speed limiting clutch 21 are connected to the distributor plate 41 and the drive shaft 20, respectively. When the rotational speed of the drive shaft 20 is below a specified speed, the speed limiting clutch 21 is engaged; when the rotational speed of the drive shaft 20 is equal to or higher than the specified speed, the speed limiting clutch 21 is disengaged. The speed limiting clutch 21 is prior art and will not be described in detail here.

[0108] When the rotational speed of the drive shaft 20 is lower than the limit speed, the speed-limiting clutch 21 is engaged, and the drive shaft 20 drives the diverter plate 41, the discharge cylinder 42, and the agitator 30 to rotate synchronously. When it is necessary to close the material conveying channel and agitate the material at high speed in a relatively enclosed environment, the drive motor 1 drives the drive shaft 20 to rotate at high speed. After the rotational speed of the drive shaft 20 is equal to or higher than the limit speed, the drive shaft 20 disengages from the diverter plate 41. At this time, the drive shaft 20 only drives the agitator 30 to rotate, thus achieving full agitation of the material. At the same time, since the diverter plate 41 and the discharge cylinder 42 are both stationary or only rotating at low speed, the control cover plate 43 approaches the discharge cylinder 42 under the action of the return spring 47, and the plug 43a seals the discharge hole 42a, thereby sealing the material conveying channel and ensuring the sealing environment of the tank 10.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A biological fermentation testing and detection device, characterized in that, include: Tank body, drive shaft, piston cylinder, and detection assembly; The drive shaft is vertically installed inside the tank, and a piston chamber is hollow inside the drive shaft; The piston cylinder is slidably disposed within the piston chamber along the axial direction of the transmission shaft; The piston chamber has multiple vent holes that connect the inside and outside of the piston chamber at intervals along the axial direction of the drive shaft on its side wall. The piston cylinder is provided with a cavity, and multiple air inlets are provided at intervals along the axial direction of the transmission shaft on the side wall of the piston cylinder. By pulling the piston cylinder axially, one pair and one pair of air inlets and vents can be selectively connected, and the non-air inlet cylinder wall area of ​​the piston cylinder can block the remaining vents. The detection component is used to detect gas or liquid entering the cavity through the vent and inlet. It also includes a feeding mechanism, which includes a distribution plate and a discharge cylinder; the distribution plate is provided with a receiving chamber, and the discharge cylinder is provided with a flow channel; The distribution plate is fixedly mounted on the top of the drive shaft; the discharge cylinder is vertically mounted inside the tank, and its top is fixedly connected to the distribution plate; the flow channel inside the discharge cylinder is connected to the receiving chamber inside the distribution plate; the discharge cylinder is provided with multiple discharge holes, which are spaced apart in the height direction and are connected to the flow channel. The material in the receiving chamber of the distribution plate flows into the tank through the flow channel and the discharge holes in sequence; in the radial direction of the drive shaft, the discharge hole is located on the outer end face of the discharge cylinder. During operation, the material is thrown out of the discharge hole under the action of centrifugal force. The tank is also equipped with a control cover plate; the control cover plate is movably disposed on the outside of the discharge cylinder in the radial direction of the drive shaft, and a plug is provided on one side of the discharge cylinder of the control cover plate, the plug being adapted to the discharge hole for sealing the discharge hole. It also includes a return spring, which is located between the control cover plate and the discharge cylinder. The return spring tends to force the control cover plate closer to the discharge cylinder, thereby causing the plug to be inserted into the discharge hole and thus blocking the discharge hole.

2. The bio-fermentation testing and detection device according to claim 1, characterized in that, The vent holes and the air inlets are provided in a one-to-one correspondence; the interval between two adjacent vent holes is not equal to the interval between two adjacent air inlets.

3. The bio-fermentation testing and detection device according to claim 1, characterized in that, The number of the vent holes and the air inlets is set to n, where n is a natural number greater than 2; The n ventilation holes are evenly spaced along the axial direction of the drive shaft; Along the axial direction of the drive shaft, the intervals between two adjacent air inlets are arranged in an arithmetic sequence.

4. The bio-fermentation testing and detection device according to claim 3, characterized in that, The difference between the minimum interval between the n air inlets and the interval between two adjacent air vents is greater than or equal to (n-1) times the arithmetic progression.

5. The bio-fermentation testing and detection device according to claim 4, characterized in that, The diameter of the equal-gradient structure is greater than that of the air inlet and the vent.

6. The bio-fermentation testing and detection device according to claim 1, characterized in that, A guide groove is provided on the side wall of the piston chamber along the axial direction of the transmission shaft, and a guide protrusion adapted to the guide groove is provided on the outer circle of the piston cylinder to prevent the piston cylinder from rotating relative to the transmission shaft.

7. The bio-fermentation testing and detection device according to claim 1, characterized in that, The detection component includes a pH meter disposed in the piston cylinder cavity for detecting the pH value of the liquid flowing into the piston cylinder cavity.

8. The bio-fermentation testing and detection device according to claim 1, characterized in that, The detection component includes a temperature sensor disposed in the piston cylinder cavity for detecting the temperature of the liquid flowing into the piston cylinder cavity.

9. The bio-fermentation testing and detection device according to claim 1, characterized in that, The detection component includes a capillary viscometer disposed in the piston cylinder cavity, used to detect the viscosity value of the liquid flowing into the piston cylinder cavity.

10. The bio-fermentation testing and detection device according to claim 1, characterized in that, It also includes a gas conduit, the inner end of which extends from the outside of the tank into the cavity of the piston cylinder to exhaust the gas in the cavity, and the outer end of which is connected to a gas analyzer to detect and analyze the gas in the cavity. An air pump is provided on the outside of the tank and on the gas conduit to force the gas to flow to the gas analyzer.

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