Efficient fermentation tank for producing soil remediation fungicide

Abstract

The utility model relates to the technical field of fermentation tanks, in particular to an efficient fermentation tank for producing a soil remediation fungicide, which comprises a tank body, a defoaming component is arranged on the inner side of the tank body, and a stirring shaft is sleeved with the defoaming component; the defoaming assembly comprises at least two sets of defoaming devices and a floating cylinder, the two sets of defoaming devices are symmetrically arranged about the center, the ends, close to each other, of the two sets of defoaming devices are connected with the stirring shaft, the floating cylinder is installed at the ends, close to each other, of the two sets of defoaming devices, and the lower end of the floating cylinder is inserted into the liquid fungicide; meanwhile, the defoaming device is arranged close to the liquid level; the defoaming assembly comprises the floating cylinder and the defoaming device, the defoaming device is movably mounted on the stirring shaft, the floating cylinder is mounted on the outer side of the defoaming device, the bottom of the floating cylinder is inserted into liquid, and the defoaming device is supported to be stably arranged on the liquid level under the action of buoyancy and ascends and descends along with the liquid level. And thus, foams are eliminated in time in the fermentation process.

Description

Technical Field

[0001] This utility model relates to the field of fermentation tank technology, and in particular to a high-efficiency fermentation tank for producing soil remediation microbial agents. Background Technology

[0002] In the industrial production of soil remediation microbial agents, the fermentation tank is the core equipment, and its performance directly affects the yield, activity, and quality stability of the agent. During fermentation, a large amount of foam is easily generated due to factors such as microbial metabolic activity, culture medium composition (e.g., peptone, corn steep liquor, etc., which are rich in surfactants), and aeration and agitation. Foam not only occupies fermentation tank space and affects tank utilization, but may also lead to increased risks of liquid escape and contamination, and even hinder oxygen transfer, inhibit microbial growth, and reduce the effective viable bacteria count and metabolite activity of the agent.

[0003] To address the foaming problem, existing fermenters mostly employ mechanical defoaming devices, such as agitator-integrated defoaming paddles and top-mounted centrifugal defoamers. These devices break down the foam structure through physical actions like shearing, centrifugation, or impact, offering advantages such as no chemical residue and low cost. However, these mechanical defoaming devices generally suffer from fixed installation locations. For example, top-mounted centrifugal defoamers only function when the foam rises to a specific position on the top of the tank, and agitator-integrated defoaming paddles can only treat foam within a certain height above the liquid surface.

[0004] In actual production, the fermentation process of soil remediation microbial agents is complex and variable, and sudden foaming occurs frequently. When the fermentation system is contaminated, the rapid reproduction of contaminating bacteria can alter the physicochemical properties of the fermentation broth, leading to an abnormal surge in foam. At this time, because traditional mechanical defoaming devices are fixed in position and have a delayed response, they cannot effectively control sudden foaming in a timely manner, causing foam to accumulate rapidly or even overflow from the tank. This not only wastes materials but may also pollute the fermentation environment, further exacerbating the risk of contamination and seriously affecting the fermentation process. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency fermentation tank for producing soil remediation microbial agents, aiming to improve the problem of fixed structural positions and untimely response in the process of eliminating foam.

[0006] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows:

[0007] A high-efficiency fermenter for producing soil remediation microbial agents includes a tank body. An antifoaming component is provided inside the tank body and is sleeved on a stirring shaft. The antifoaming component includes an antifoaming device and a float. At least two sets of antifoaming devices are provided, which are symmetrically arranged about the center. The ends of the two sets of antifoaming devices that are close to each other are connected to the stirring shaft. The float is installed at the ends of the two sets of antifoaming devices that are close to each other, and the lower end of the float is inserted into the liquid microbial agent. At the same time, the antifoaming device is positioned close to the liquid surface.

[0008] Furthermore, the defoaming device is configured as a first defoaming device, which includes a support plate and a plurality of first piercing blades. A plurality of mounting holes are provided on the support plate, and the plurality of first piercing blades are evenly installed at the plurality of mounting holes.

[0009] Furthermore, the multiple first piercing blades in each mounting hole are evenly distributed along the circumference of the hole; the multiple mounting holes on the two sets of first defoaming devices are staggered.

[0010] Furthermore, a support frame is fitted onto the first defoaming device, the top wall of the support frame is provided with a perforation, and a slot is provided on the bottom surface inside the support frame, the first defoaming device passes through the perforation and is inserted into the slot at the bottom; a first clamping arc plate is fixedly provided at the end of the support frame.

[0011] Furthermore, the defoaming device is configured as a second defoaming device, which includes a support shaft and multiple third sleeves sleeved on the support shaft. Multiple second piercing knives are evenly installed on the outside of each third sleeve, and a pressing bolt is threaded through the end of the third sleeve, with the end of the pressing bolt pressing against the support shaft.

[0012] Furthermore, the second piercing blade is designed with a multi-faceted pyramidal structure, and multiple third sleeves are staggered on the two support shafts.

[0013] Furthermore, a support plate and a clamping plate connected by bolts are provided at the end of the support shaft, and a slot is provided on the side wall of the support plate and the clamping plate. A retaining ring is fixedly provided at the end of the support shaft and installed in the slot; a second clamping arc plate is fixedly provided at the end of the support plate.

[0014] Furthermore, two symmetrical first or second clamping arc plates are connected by bolts and sleeved on the stirring shaft. Sliding grooves are provided on the inner sidewalls of the first and second clamping arc plates along their height direction, and ball bearings are provided in the sliding grooves. A sliding groove is provided on the stirring shaft along its height, the length of which is greater than the height of the clamping arc plates, and the ball bearings extend into the sliding grooves.

[0015] Furthermore, a top column is fixedly installed at the top of the float cylinder, a first sleeve is fitted on the top column, a second sleeve is fixedly installed on the side of the first sleeve, the second sleeve is fitted on the connecting shaft, and the internal threaded tube installed in the second sleeve passes through the sliding hole of the connecting shaft. At the same time, the adjusting screw installed in the connecting shaft is threaded through the internal threaded tube.

[0016] Furthermore, the top of the float tube is set as an opening, and a top cover is detachably provided on the top of the float tube. An insert plate installed at the bottom of the top cover is inserted into the float tube; a valve body is provided at the bottom of the float tube.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The defoaming component of this utility model includes a float and a defoaming device. The defoaming device is movably mounted on the stirring shaft, while the float is mounted on the outside of the defoaming device. In addition, the bottom of the float is inserted into the liquid. Therefore, under the action of buoyancy, the defoaming device is stably placed on the liquid surface and rises and falls with the liquid level, thereby eliminating foam in time during the fermentation process.

[0019] 2. The clamping arc plate of this utility model is connected to the stirring shaft, and sliding grooves and troughs are respectively provided on the clamping arc plate and the stirring shaft. Ball bearings are provided in the space formed by the sliding grooves and troughs. Under the action of the ball bearings, the defoaming device is controlled to rotate synchronously with the stirring shaft, and at the same time, it provides convenience for the lifting and lowering of the defoaming device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the defoaming component and the stirring shaft of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the support frame, the first defoaming device, and the first clamping arc plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the support frame of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the first clamping arc plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the first defoaming device of this utility model;

[0026] Figure 7 This is a first structural schematic diagram of the floating tube of this utility model;

[0027] Figure 8 This is a schematic diagram of the second structure of the floating tube of this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the defoaming component of this utility model;

[0029] Figure 10 This is a schematic diagram of the structure of the second defoaming device of this utility model;

[0030] Figure 11 This is a schematic diagram of the structure of the second piercing knife of this utility model.

[0031] In the diagram: 1. Tank body; 11. Stirring shaft; 12. Slide groove; 2. Defoaming assembly; 21. Float; 210. Top cover; 211. Top column; 212. First sleeve; 213. Second sleeve; 214. Adjusting screw; 215. Sliding hole; 216. Connecting shaft; 217. Valve body; 218. Opening; 219. Insert plate; 22. Support frame; 221. Slot; 222. Perforation; 23. First defoaming assembly. Defoaming device; 231, support plate; 232, first piercing blade; 24, first clamping arc plate; 241, insertion hole; 242, sliding groove; 243, ball bearing; 25, second defoaming device; 251, second clamping arc plate; 252, support plate; 253, clamping plate; 254, slot; 255, support shaft; 256, retaining ring; 257, second piercing blade; 258, third sleeve; 259, pressing bolt. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0033] like Figure 1 , Figure 2 As shown, in order to adjust the height of the defoaming device according to changes in the liquid level and thus eliminate foam in a timely manner during fermentation, this embodiment provides a new fermentation tank. The fermentation tank includes a tank body 1 and a defoaming component 2 disposed inside the tank body 1. The defoaming component 2 is sleeved on the stirring shaft 11. Therefore, when the stirring shaft 11 rotates, the defoaming component 2 rotates synchronously, thereby eliminating the foam floating on the liquid surface more comprehensively. That is, through high-speed motion, a shearing force is generated on the foam, causing the foam liquid film to be stretched, thinned, and eventually ruptured.

[0034] Before detailing the technical solution for defoaming component 2, a brief overview of the other publicly disclosed structures of the fermenter is provided here. Specifically, the tank 1 is also equipped with a stirring system, a ventilation system, a temperature control system, a pH control system, and a control system.

[0035] The mixing system consists of a stirring shaft 11 and a stirring paddle. The stirring shaft 11 is usually located at the center of the tank and is connected to a drive motor, which drives the stirring paddle to rotate. The stirring paddle comes in various shapes and sizes, with common types including turbine, propeller, and anchor paddles. Its function is to thoroughly mix the fermentation broth, evenly distribute nutrients and oxygen, prevent material sedimentation, and promote full contact between microorganisms and nutrients, thereby improving fermentation efficiency.

[0036] The ventilation system includes air filters and air distributors. After being sterilized by the filters, air is evenly distributed into the fermenter through the air distributors to provide the microorganisms with the oxygen needed for growth and metabolism. Air distributors are generally installed at the bottom of the tank and commonly come in ring or perforated tubular forms, ensuring that air is evenly dispersed in the fermentation broth in the form of fine bubbles, increasing the gas-liquid contact area and improving oxygen transfer efficiency.

[0037] The temperature control system consists of a jacket, heat exchanger, temperature sensor, and controller. The jacket surrounds the outside of the tank and regulates the internal temperature by circulating hot or cold water. The heat exchanger heats or cools the circulating medium. The temperature sensor monitors the fermentation broth temperature in real time and transmits the signal to the controller. The controller automatically adjusts the flow rate of the circulating medium in the jacket according to the set temperature, ensuring that the fermentation process takes place within a suitable temperature range.

[0038] The pH control system includes a pH sensor and an acid / base addition device. The pH sensor monitors the pH value of the fermentation broth in real time. When the pH value deviates from the set range, the controller automatically controls the acid / base addition device to add acid or alkali solution to the fermenter to maintain the pH value of the fermentation broth and meet the requirements of microbial growth and metabolism.

[0039] The control system is the "brain" of the fermenter, integrating data acquisition and processing functions from various sensors, as well as control functions for systems such as stirring, aeration, temperature, pH, and defoaming. Through preset programs and parameters, the control system achieves automated monitoring and regulation of the fermentation process, ensuring its stability and repeatability, and improving production efficiency and product quality.

[0040] To eliminate foam through the operation of the defoaming assembly 2, the defoaming assembly 2 includes defoaming devices and a float cylinder 21. At least two sets of defoaming devices are provided, arranged symmetrically about a center, with their ends connected to the stirring shaft 11. The float cylinder 21 is installed at the ends of the two defoaming devices, with its lower end inserted into the liquid bacterial agent, and the defoaming devices positioned near the liquid surface. Therefore, under the action of the float cylinder 21, the defoaming devices are controlled to float on the liquid surface and rotate with the stirring shaft 11. During rotation, the foam is punctured, achieving the purpose of elimination.

[0041] Example 1:

[0042] like Figure 6 As shown, specifically, the defoaming device is configured as a first defoaming device 23, which includes a support plate 231 and multiple first piercing blades 232. Multiple mounting holes are provided on the support plate 231, and the multiple first piercing blades 232 are evenly installed in the mounting holes. The multiple first piercing blades 232 in each mounting hole are evenly distributed along the circumference of the hole, and the mounting holes on the two sets of first defoaming devices 23 are staggered. During the rotation of the first defoaming device 23, the support plate 231 comes into contact with the foam, and the foam escapes through the mounting holes. During the foam escape, the first piercing blades 232 pierce the foam. Because the multiple mounting holes of the two sets of first defoaming devices 23 are staggered, foam at different locations can be eliminated by the cooperation of the two sets of first defoaming devices 23.

[0043] like Figure 3 As shown, to ensure the first defoaming device 23 is stably mounted on the side of the stirring shaft 11, a support frame 22 is fitted onto the first defoaming device 23. The top wall of the support frame 22 has a through hole 222, and the bottom surface inside the support frame 22 has a slot 221. The first defoaming device 23 passes through the through hole 222 and is inserted into the slot 221 at its bottom. Simultaneously, threads pass through both the first defoaming device 23 and the support frame 22, thus ensuring the first defoaming device 23 is stably mounted on the support frame 22. Furthermore, the support frame 22 and the first defoaming device 23 are detachably connected, allowing for easy replacement of the first defoaming device 23 as needed. Because the support frame 22 is stably mounted on the stirring shaft 11, the first defoaming device 23 can be stably positioned.

[0044] like Figure 4 , Figure 5 As shown, to ensure stable installation of the support frame 22, a first clamping arc plate 24 is fixedly installed at the end of the support frame 22. Two symmetrical first clamping arc plates 24 are connected by bolts and sleeved on the stirring shaft 11. To avoid affecting the lifting and lowering of the first defoaming device 23, a sliding groove 242 is provided on the inner sidewall of the first clamping arc plate 24 along its height direction. A ball bearing 243 is provided in the sliding groove 242. A sliding groove 12 is provided on the stirring shaft 11 along its height. The length of the sliding groove 12 is greater than the height of the clamping arc plate, and the ball bearing 243 extends into the sliding groove 12. With the cooperation of the ball bearing 243, the sliding groove 12, and the sliding groove 242, the first clamping arc plate 24 can be restricted to rotate synchronously with the stirring shaft 11. Since the sliding groove 12 is set along the height of the stirring shaft 11, the first clamping arc plate 24 can be controlled to lift and lower the first defoaming device 23 under the action of buoyancy, thereby causing the first defoaming device 23 to change with the liquid level.

[0045] like Figure 7As shown, to stably mount the float cylinder 21 on the side of the first clamping arc plate 24, a top post 211 is fixedly installed on the top of the float cylinder 21. A first sleeve 212 is fitted onto the top post 211, and a second sleeve 213 is fixedly installed on the side of the first sleeve 212. The second sleeve 213 is fitted onto the connecting shaft 216, and the internally threaded tube installed in the second sleeve 213 passes through the sliding hole 215 of the connecting shaft 216. At the same time, the adjusting screw 214 installed in the connecting shaft 216 is threaded through the internally threaded tube. In addition, the bottom of the connecting shaft 216 is bolted into the insertion hole 241 of the first clamping arc plate 24. Therefore, with the connecting shaft 216 stably installed, the bottom of the float cylinder 21 is stably supported and inserted into the liquid, which allows the float cylinder 21 and the first defoaming device 23 to rise and fall under the action of buoyancy. In order to adjust the relative positions of the float 21 and the first defoaming device 23 as needed, and thus control the first defoaming device 23 to float stably on the liquid surface, the position of the sleeve can be adjusted by rotating the adjusting screw 214, thereby adjusting the first defoaming device 23 to float on the liquid surface.

[0046] Example 2:

[0047] like Figure 9 , Figure 10 , Figure 11 As shown, specifically, the defoaming device is configured as a second defoaming device 25. The second defoaming device 25 includes a support shaft 255 and multiple third sleeves 258 sleeved on the support shaft. Multiple second piercing blades 257 are evenly installed on the outer side of each third sleeve 258. The second piercing blades 257 are configured with a multi-faceted pyramidal structure, and a pressing bolt 259 is threaded through the end of the third sleeve 258. The end of the pressing bolt 259 presses against the support shaft 255, and under the action of the pressing bolt 259, the third sleeve 258 is stationary relative to the support shaft 255, and provides convenience for adjusting the position of the second piercing blades 257 as needed. Therefore, the multiple third sleeves 258 on the two support shafts 255 can be staggered, thereby achieving a more comprehensive defoaming treatment in their cooperation.

[0048] like Figure 10 As shown, to stably mount the support shaft 255 on the side of the stirring shaft 11, a support plate 252 and a clamping plate 253 connected by bolts are provided at the end of the support shaft 255. A slot 254 is provided on the side wall of the support plate 252 and the clamping plate 253. A retaining ring 256 is fixedly mounted at the end of the support shaft 255, and the retaining ring 256 is installed in the slot 254, enabling a detachable connection between the support shaft 255 and the support plate 252 and the clamping plate 253. Furthermore, a second clamping arc plate 251 is fixedly mounted at the end of the support plate 252, and the second clamping arc plate 251 is connected to the stirring shaft 11, thereby controlling the support shaft 255 to stably mount the second piercing blade 257 and allow it to rotate with the stirring shaft 11.

[0049] like Figure 10 As shown, to ensure stable installation of the second clamping arc plate 251 relative to the stirring shaft 11, two symmetrical second clamping arc plates 251 are connected by bolts and sleeved on the stirring shaft 11. A sliding groove 242 is provided on the inner sidewall of the second clamping arc plate 251 along its height direction, and a ball bearing 243 is disposed within the sliding groove 242. A sliding groove 12 is provided on the stirring shaft 11 along its height, the length of which is greater than the height of the clamping arc plate, and the ball bearing 243 extends into the sliding groove 12. With the cooperation of the ball bearing 243, the sliding groove 12, and the sliding groove 242, the second clamping arc plate 251 can be restricted to rotate synchronously with the stirring shaft 11. Furthermore, because the sliding groove 12 is positioned along the height of the stirring shaft 11, the second clamping arc plate 251 can be controlled to move the second defoaming device 25 up and down under the action of buoyancy, thereby causing the second defoaming device 25 to change with the liquid level.

[0050] like Figure 7 As shown, to stably install the float cylinder 21 on the side of the first clamping arc plate 24, a top post 211 is fixedly installed on the top of the float cylinder 21. A first sleeve 212 is fitted onto the top post 211, and a second sleeve 213 is fixedly installed on the side of the first sleeve 212. The second sleeve 213 is fitted onto the connecting shaft 216, and the internally threaded tube installed in the second sleeve 213 passes through the sliding hole 215 of the connecting shaft 216. At the same time, the adjusting screw 214 installed in the connecting shaft 216 is threaded through the internally threaded tube. In addition, the bottom of the connecting shaft 216 is bolted into the insertion hole 241 of the first clamping arc plate 24. Therefore, with the connecting shaft 216 stably installed, the bottom of the float cylinder 21 is stably supported and inserted into the liquid, which allows the float cylinder 21 and the second defoaming device 25 to rise and fall under the action of buoyancy. In order to adjust the relative positions of the float 21 and the second defoaming device 25 as needed, and thus control the second defoaming device 25 to float stably on the liquid surface, the position of the sleeve can be adjusted by rotating the adjusting screw 214, thereby adjusting the second defoaming device 25 to float on the liquid surface.

[0051] Example 3:

[0052] like Figure 8 As shown, based on Embodiment 1 or 2, in order to adjust the weight of the defoaming component 2 to counteract buoyancy and allow the defoaming device to float on the liquid surface, the top of the float cylinder 21 is provided with an opening 218. A top cover 210 is detachably provided on the top of the float cylinder 21, and an insert plate 219 installed at the bottom of the top cover 210 is inserted into the float cylinder 21. Therefore, liquid can be added into the float cylinder 21 through the opening 218 to adjust the mass of the entire defoaming component 2. In addition, a valve body 217 is provided at the bottom of the float cylinder 21, and the mass can be adjusted by discharging liquid through adjusting the state of the valve body 217.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those skilled in the art, any changes, modifications or additions made without departing from the concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A high-efficiency fermenter for producing a soil remediation bacterial agent, characterized by: The device includes a tank (1), and an antifoaming component (2) is provided on the inner side of the tank (1). The antifoaming component (2) is sleeved on the stirring shaft (11). The antifoaming component (2) includes an antifoaming device and a float (21). At least two sets of antifoaming devices are provided. The two sets of antifoaming devices are symmetrically arranged about the center, and the ends of the two sets of antifoaming devices that are close to each other are connected to the stirring shaft (11). The float (21) is installed at the ends of the two sets of antifoaming devices that are close to each other, and the lower end of the float (21) is inserted into the liquid bacterial agent. At the same time, the antifoaming device is set near the liquid surface.

2. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 1, characterized in that: The defoaming device is configured as a first defoaming device (23), which includes a support plate (231) and a plurality of first piercing knives (232). A plurality of mounting holes are provided on the support plate (231), and the plurality of first piercing knives (232) are evenly installed at the plurality of mounting holes.

3. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 2, characterized in that: Multiple first piercing blades (232) in each mounting hole are evenly distributed along the circumference of the hole; multiple mounting holes on the two sets of first defoaming devices (23) are staggered.

4. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 3, characterized in that: A support frame (22) is fitted on the first defoaming device (23). The top wall of the support frame (22) is provided with a perforation (222), and a slot (221) is provided on the bottom surface inside the support frame (22). The first defoaming device (23) is installed through the perforation (222) and inserted into the slot (221) at the bottom. A first clamping arc plate (24) is fixedly provided at the end of the support frame (22).

5. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 2, characterized in that: The defoaming device is configured as a second defoaming device (25). The second defoaming device (25) includes a support shaft (255) and a plurality of third sleeves (258) sleeved on the support shaft (255). A plurality of second piercing knives (257) are evenly installed on the outside of each third sleeve (258), and a pressing bolt (259) is threaded through the end of the third sleeve (258). The end of the pressing bolt (259) presses against the support shaft (255).

6. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 5, characterized in that: The second piercing knife (257) is configured as a multi-faceted pyramidal structure, with multiple third sleeves (258) staggered on the two support shafts (255).

7. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 5, characterized in that: The end of the support shaft (255) is provided with a support plate (252) and a clamping plate (253) connected by bolts. A slot (254) is provided on the side wall of the support plate (252) and the clamping plate (253). A retaining ring (256) is fixedly provided at the end of the support shaft (255) and is installed in the slot (254). A second clamping arc plate (251) is fixedly provided at the end of the support plate (252).

8. The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 4 or 7, characterized in that: Two symmetrical first clamping arc plates (24) or second clamping arc plates (251) are connected by bolts and sleeved on the stirring shaft (11). The inner sidewalls of the first clamping arc plate (24) and the second clamping arc plate (251) are provided with sliding grooves (242) along their height direction. Ball bearings (243) are provided in the sliding grooves (242). A sliding groove (12) is provided on the stirring shaft (11) along its height direction. The length of the sliding groove (12) is greater than the height of the clamping arc plate, and the ball bearings (243) extend into the sliding groove (12). 9.The high-efficiency fermentation tank for producing soil remediation bacterial agent according to claim 8, characterized in that: A top post (211) is fixedly installed on the top of the float (21). A first sleeve (212) is sleeved on the top post (211). A second sleeve (213) is fixedly installed on the side of the first sleeve (212). The second sleeve (213) is sleeved on the connecting shaft (216). The internal threaded tube installed in the second sleeve (213) passes through the sliding hole (215) of the connecting shaft (216). At the same time, the adjusting screw (214) installed in the connecting shaft (216) is threaded through the internal threaded tube.

10. A high-efficiency fermenter for producing soil remediation microbial agents according to claim 9, characterized in that: The top of the float tube (21) is set as an opening (218), and the top of the float tube (21) is detachably provided with a top cover (210). An insert plate (219) installed at the bottom of the top cover (210) is inserted into the float tube (21); a valve body (217) is provided at the bottom of the float tube (21).

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