Microbial fermentation tank for biological enzyme preparation

Abstract

The invention relates to the technical field of biological fermentation tanks, in particular to a microbial fermentation tank for biological enzyme preparation, which comprises a mounting frame, a tank body is fixedly mounted at the top of the mounting frame, a top cover is fixedly mounted at the top of the tank body through bolts and used for sealing the tank body, and a driving motor is fixedly mounted at the top of the top cover and used for driving the tank body to rotate. The power output end of the driving motor is fixedly connected with a transmission pipe, the driving motor is used for driving the transmission pipe to rotate, a buoy is installed on the transmission pipe in a sliding mode, and the side face of the buoy is vertically and fixedly connected with a fishing frame. The buoy is slidably mounted on the transmission pipe, the fishing frame with the fishing net is mounted on the side face of the buoy, and the fishing frame can float on the liquid level through the buoy, so that the driving motor can drive the fishing net to catch and remove covering films such as emulsion films on the liquid level when driving the transmission pipe to rotate; the influence on aerobic fermentation of the fermentation liquid is avoided, so that the fermentation is more thorough.

Description

Technical Field

[0001] The invention relates to the technical field of biological fermentation tanks, in particular to a microbial fermentation tank for preparing biological enzymes. Background Art

[0002] Biological enzymes are generally extracted after microbial fermentation. Therefore, when preparing biological enzymes, the microorganisms need to be placed in a fermentation tank for fermentation for a period of time before extraction. A Chinese patent (publication number: CN218115414U) discloses a microbial fermentation tank for preparing biological enzymes, comprising a fixed base, a transmission box is fixedly connected to one side of the upper end surface of the fixed base, a heat preservation sleeve is fixedly connected to the upper end surface of the fixed base, a fermentation tank body is arranged inside the heat preservation sleeve, a first fixed frame is fixedly connected to the upper surface of the fermentation tank body, a first limit moving block is arranged on the outer surface of the first fixed frame close to the transmission box, a sealing cover is movably sleeved on the upper end surface of the fermentation tank body, a second fixed frame is fixedly connected to the outer surface of the sealing cover, a second fixed frame is fixedly connected to the outer surface of the second fixed frame close to the transmission box, a transmission track is arranged inside the transmission box, a transmission shaft is transmission-connected to the upper and lower parts of the transmission track, the transmission track passes through the first limit moving block and the second limit moving block, the second limit moving block is fixedly connected to the transmission track, a fixed slide groove is symmetrically provided on the lower surface of the transmission track, a slider is slidingly connected to the fixed slide groove, and the slider is fixedly connected to the inner wall of the first limit moving block.

[0003] However, the existing microbial fermentation tanks have some disadvantages when used, such as:

[0004] Since microorganisms tend to form an emulsified film on the liquid surface during fermentation, and the existing microbial fermentation tanks do not have a film removal structure, when the film is thick, it affects the entry of air into the fermented liquid. For some aerobic fermentation processes, the film will seriously affect the fermentation process and cause incomplete fermentation. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a microbial fermentation tank for preparing biological enzymes, so as to solve the problem that microorganisms easily form an emulsified film on the liquid surface during fermentation, and the existing microbial fermentation tanks do not have a film removal structure. When the film is thick, it affects the entry of air into the fermentation liquid. For some aerobic fermentation processes, the film will seriously affect the fermentation process and cause insufficient fermentation.

[0006] Based on the above-mentioned purpose, the present invention provides a microbial fermentation tank for preparing biological enzymes, including a mounting frame, a tank body is fixedly installed on the top of the mounting frame, a top cover is fixedly installed on the top of the tank body by bolts, the top cover is used to seal the tank body, a driving motor is fixedly installed on the top of the top cover, a transmission pipe is fixedly connected to the power output end of the driving motor, the driving motor is used to drive the transmission pipe to rotate, a float is slidably installed on the transmission pipe, a fishing frame is vertically fixedly connected to the side of the float, a fishing net is fixedly connected to the inside of the fishing frame, the fishing net is used to catch impurity film on the liquid surface, the fishing frame moves up and down on the transmission pipe through the float, and the float is used to suspend the fishing frame above the liquid surface.

[0007] Furthermore, a slide groove is fixedly provided on the side of the transmission tube, and the float is slidably arranged on the transmission tube through the slide groove; a connecting frame is fixedly connected to the bottom of the float, and the connecting frame is placed inside the transmission tube; a telescopic tube is arranged inside the transmission tube, and the telescopic tube is arranged at the bottom of the float; the top of the telescopic tube is rotatably connected to the connecting frame, and the top of the telescopic tube is connected to the lower surface of the float through the connecting frame, and the float drives one end of the top of the telescopic tube to move up and down inside the transmission tube through the connecting frame; a liquid discharge pipe is connected through the center of the bottom of the tank body, and a first valve is fixedly installed at one end of the liquid discharge pipe located outside the tank body, and the first valve is used to control the through state of the liquid discharge pipe, and the end of the telescopic tube away from the float is fixedly connected to the liquid discharge pipe, and the telescopic tube is connected to the outside of the tank body through the liquid discharge pipe.

[0008] Furthermore, a mounting plate is fixedly connected to the outer wall of one end of the transmission tube away from the driving motor, and four stirring plates are evenly and vertically fixedly connected to the side of the mounting plate. The stirring plates are fixedly connected to the transmission tube via the mounting plate, and the stirring plates are used to stir the material inside the tank body through the transmission tube.

[0009] Furthermore, a drain pipe is connected through the bottom of the tank body, and the drain pipe is arranged on one side of the liquid discharge pipe. The drain pipe is used to discharge impurities deposited at the bottom of the tank body. A second valve is fixedly installed at one end of the drain pipe located outside the tank body, and the second valve is used to control the through state of the drain pipe.

[0010] Furthermore, a steam inlet pipe is connected through the bottom of the tank body, and the steam inlet pipe is arranged on the side of the liquid discharge pipe away from the sewage pipe. The steam inlet pipe is used to introduce steam into the tank body. A third valve is fixedly installed at one end of the steam inlet pipe located outside the tank body, and the third valve is used to control the penetration state of the steam inlet pipe.

[0011] Furthermore, a material delivery port is provided through the top of the top cover, and the material delivery port is arranged on one side of the driving motor. A sealing cover is fixedly installed above the material delivery port by bolts, and the sealing cover is used to seal the material delivery port. A handle is fixedly connected to the upper surface of the sealing cover, and the handle is used to hold the sealing cover.

[0012] Furthermore, an additive delivery port is provided through the top of the top cover, the additive delivery port is arranged on the side of the driving motor away from the material delivery port, a quick connector is provided on the additive delivery port, and the additive delivery port is used to deliver additives into the tank body.

[0013] Furthermore, an observation hole is opened on the side of the tank body, and a sealing glass is provided on the inner wall of the observation hole, and the observation hole is used to observe the liquid level inside the tank body.

[0014] Beneficial effects of the present invention:

[0015] The present invention has a float slidably installed on a transmission tube, and a fishing frame with a fishing net is installed on the side of the float. Since the float can float the fishing frame on the liquid surface, the driving motor can drive the fishing net to catch and remove the emulsified film and other films on the liquid surface when driving the transmission tube to rotate, thereby avoiding affecting the aerobic fermentation of the fermentation liquid and making the fermentation more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall top view of the three-dimensional structure of a product in one embodiment of the present invention;

[0018] Figure 2 For the present invention Figure 1 A schematic diagram of the overall bottom-up stereoscopic structure of the product in the embodiment;

[0019] Figure 3 For the present invention Figure 1 A schematic diagram of the main structure of the product in the embodiment;

[0020] Figure 4 For the present invention Figure 1 A schematic diagram of the main cross-sectional structure of the product in the embodiment;

[0021] Figure 5 For the present invention Figure 1A schematic diagram of the internal three-dimensional structure of the product in the embodiment from top view;

[0022] Figure 6 For the present invention Figure 1 A schematic diagram of the internal three-dimensional structure of the product in the embodiment when viewed from above;

[0023] Figure 7 For the present invention Figure 1 A schematic diagram of a top-down three-dimensional structure of a float of a product in an embodiment;

[0024] Figure 8 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the float of the product in the embodiment when viewed from above.

[0025] The markings in the figure are:

[0026] 101. mounting frame; 102. tank body; 103. top cover; 104. driving motor; 105. transmission pipe; 106. float; 107. fishing frame; 108. fishing net; 201. slideway; 202. connecting frame; 203. telescopic pipe; 204. liquid discharge pipe; 205. first valve; 301. mounting plate; 302. stirring plate; 401. drain pipe; 402. second valve; 501. steam inlet pipe; 502. third valve; 601. material delivery port; 602. sealing cover; 603. handle; 700. additive delivery port; 800. observation hole. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Please also read Figure 1-Figure 8 ,in, Figure 1 This is a schematic diagram of the overall top view of the three-dimensional structure of a product in one embodiment of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the overall bottom-up stereoscopic structure of the product in the embodiment; Figure 3 For the present invention Figure 1 A schematic diagram of the main structure of the product in the embodiment; Figure 4 For the present invention Figure 1 A schematic diagram of the main cross-sectional structure of the product in the embodiment; Figure 5 For the present invention Figure 1 A schematic diagram of the internal three-dimensional structure of the product in the embodiment from top view; Figure 6 For the present invention Figure 1 A schematic diagram of the internal three-dimensional structure of the product in the embodiment when viewed from above; Figure 7 For the present invention Figure 1 A schematic diagram of a top-down three-dimensional structure of a float of a product in an embodiment; Figure 8 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the float of the product in the embodiment when viewed from above.

[0030] A microbial fermentation tank for preparing a biological enzyme, comprising a mounting frame 101, a tank body 102 is fixedly mounted on the top of the mounting frame 101, a top cover 103 is fixedly mounted on the top of the tank body 102 by bolts, the top cover 103 is used to seal the tank body 102, a driving motor 104 is fixedly mounted on the top of the top cover 103, a transmission tube 105 is fixedly connected to the power output end of the driving motor 104, the driving motor 104 is used to drive the transmission tube 105 to rotate, a float 106 is slidably mounted on the transmission tube 105, a fishing frame 107 is vertically fixedly connected to the side of the float 106, a fishing net 108 is fixedly connected inside the fishing frame 107, the fishing net 108 is used to catch impurity films on the liquid surface, the fishing frame 107 moves up and down on the transmission tube 105 through the float 106, and the float 106 is used to suspend the fishing frame 107 on the liquid surface;

[0031] The float 106 can move up and down on the transmission tube 105, and it is necessary to ensure that the float 106 can rotate with the transmission tube 105, so that the fishing frame 107 and the fishing net 108 installed on the float 106 can catch the emulsified film on the liquid surface by rotating;

[0032] The driving motor 104 can be a low-speed motor to avoid too fast rotation of the transmission tube 105. At the same time, a timer switch can be installed on the power supply circuit of the driving motor 104 as needed, so that the driving motor 104 can intermittently and regularly drive the mixing of the fermentation liquid and the capture of the emulsified membrane;

[0033] The present invention has a float 106 slidably installed on a transmission tube 105, and a fishing frame 107 with a fishing net 108 is installed on the side of the float 106. Since the float 106 can float the fishing frame 107 on the liquid surface, the driving motor 104 can drive the fishing net 108 to catch and remove the emulsified film and other films on the liquid surface when driving the transmission tube 105 to rotate, thereby avoiding affecting the aerobic fermentation of the fermentation liquid and making the fermentation more thorough.

[0034] Furthermore, a slide groove 201 is fixedly opened on the side of the transmission tube 105, and the float 106 is slidably arranged on the transmission tube 105 through the slide groove 201. A connecting frame 202 is fixedly connected to the bottom of the float 106, and the connecting frame 202 is placed inside the transmission tube 105. A telescopic tube 203 is arranged inside the transmission tube 105, and the telescopic tube 203 is arranged at the bottom of the float 106. The top of the telescopic tube 203 is rotatably connected to the connecting frame 202, and the top of the telescopic tube 203 is connected to the lower surface of the float 106 through the connecting frame 202. The float 1 06 drives the top end of the telescopic tube 203 to move up and down inside the transmission tube 105 through the connecting frame 202; a liquid discharge pipe 204 is connected through the center of the bottom of the tank body 102, and a first valve 205 is fixedly installed at one end of the liquid discharge pipe 204 located outside the tank body 102, and the first valve 205 is used to control the through state of the liquid discharge pipe 204, and the end of the telescopic tube 203 away from the float 106 is fixedly connected to the liquid discharge pipe 204, and the telescopic tube 203 is connected to the outside of the tank body 102 through the liquid discharge pipe 204;

[0035] A shaft seal is provided at the connection between the driving motor 104 and the top cover 103 to seal the gap between the driving motor 104 and the top cover 103 to avoid affecting the fermentation process;

[0036] Among them, one end of the bottom of the telescopic tube 203 is connected with the liquid discharge pipe 204, so that the fermentation liquid inside the tank body 102 can only enter the liquid discharge pipe 204 through the telescopic tube 203 and be discharged, and the top of the telescopic tube 203 is fixed to the bottom of the float 106 through the connecting frame 202, so that the top of the telescopic tube 203 can float up and down following the height of the fermentation liquid through the float 106, and the connecting frame 202 is a hollow structure, and the inlet at the top of the telescopic tube 203 can be connected with the fermentation liquid inside the tank body 102 through the hollow of the connecting frame 202 and the chute 201, so that the fermentation liquid can enter the telescopic tube 203 through the chute 201 and the hollow on the connecting frame 202;

[0037] Among them, the connection between the top of the telescopic tube 203 and the connecting frame 202 is a rotating connection, so that when the float 106 drives the connecting frame 202 to rotate with the transmission tube 105, the telescopic tube 203 will not rotate with the connecting frame 202, which is conducive to the connection between the telescopic tube 203 and the liquid discharge pipe 204 not being affected;.

[0038] Furthermore, a mounting plate 301 is fixedly connected to the outer wall of one end of the transmission tube 105 away from the driving motor 104, and four stirring plates 302 are evenly and vertically fixedly connected to the side of the mounting plate 301. The stirring plates 302 are fixedly connected to the transmission tube 105 through the mounting plate 301, and the stirring plates 302 are used to stir the material inside the tank body 102 through the transmission tube 105;

[0039] Among them, the stirring plate 302 fits with the bottom side wall of the tank body 102, so that the stirring plate 302 can fully stir the fermentation liquid at the bottom of the tank body 102, which is conducive to the fermentation; at the same time, a certain distance is left between the stirring plate 302 and the bottom of the tank body 102 for impurities in the fermentation liquid to precipitate.

[0040] Furthermore, a drain pipe 401 is connected through the bottom of the tank body 102, and the drain pipe 401 is arranged on one side of the liquid discharge pipe 204. The drain pipe 401 is used to discharge impurities deposited at the bottom of the tank body 102. A second valve 402 is fixedly installed at one end of the drain pipe 401 located outside the tank body 102, and the second valve 402 is used to control the through state of the drain pipe 401;

[0041] The sewage pipe 401 is connected to the bottom of the tank body 102 , which is beneficial to the discharge of impurities deposited at the bottom of the tank body 102 , and is also beneficial to the discharge of waste water used for flushing the tank body 102 .

[0042] Furthermore, a steam inlet pipe 501 is connected through the bottom of the tank body 102, and the steam inlet pipe 501 is arranged on the side of the liquid discharge pipe 204 away from the sewage discharge pipe 401. The steam inlet pipe 501 is used to pass steam into the tank body 102. A third valve 502 is fixedly installed at one end of the steam inlet pipe 501 outside the tank body 102, and the third valve 502 is used to control the through state of the steam inlet pipe 501;

[0043] The steam inlet pipe 501 is used to introduce steam into the tank body 102 for sterilization.

[0044] Furthermore, a material delivery port 601 is provided through the top of the top cover 103, and the material delivery port 601 is arranged on one side of the driving motor 104. A sealing cover 602 is fixedly installed above the material delivery port 601 by bolts, and the sealing cover 602 is used to seal the material delivery port 601. A handle 603 is fixedly connected to the upper surface of the sealing cover 602, and the handle 603 is used to hold the sealing cover 602; an additive delivery port 700 is provided through the top of the top cover 103, and the additive delivery port 700 is arranged on the side of the driving motor 104 away from the material delivery port 601. A quick connector is provided on the additive delivery port 700, and the additive delivery port 700 is used to deliver additives into the tank body 102.

[0045] The material delivery port 601 is used to deliver materials for fermentation, such as fermentation liquid, yeast, etc., into the tank body 102, and the additive delivery port 700 is used to deliver fermentation additives, such as various fermentation promoters, nutrients, etc., into the tank body 102;

[0046] Furthermore, an observation hole 800 is opened on the side of the tank body 102, and a sealed glass is provided on the inner wall of the observation hole 800, and the observation hole 800 is used to observe the height of the liquid level inside the tank body 102; the user can observe the color, liquid level and fermentation status of the fermentation liquid inside the tank body 102 through the transparent observation hole 800. If some fermentation processes need to be protected from light, the glass of the sealed observation hole 800 can be replaced with brown glass with higher light-shielding degree.

[0047] In summary, when in use, first, open the third valve 502, and introduce steam into the tank body 102 through the steam inlet pipe 501, and use the high-temperature steam to sterilize the tank body 102 and the inner wall of the top cover 103 at high temperature. After the sterilization is completed, close the third valve 502, and oxygen can also be added to the fermentation tank through the steam inlet pipe 501 during the aerobic fermentation process; then open the sealing cover 602, and add the liquid and bacteria for fermentation into the tank body 102 through the material delivery port 601, and at the same time, add additives into the tank body 102 through the additive delivery port 700, and then use the sealing cover 602 to seal the material delivery port 601; After a period of fermentation, the driving motor 104 is started, so that the driving motor 104 drives the transmission tube 105 to rotate at a low speed. The rotation of the transmission tube 105 also drives the float 106 to rotate, and the float 106 drives the fishing net 108 to catch the emulsified film on the liquid surface. The transmission tube 105 also drives the stirring plate 302 to rotate, so as to achieve full mixing of the fermentation liquid, so that the fermentation of the fermentation liquid is more thorough. In this process, since the float 106 is a hollow structure and floats on the liquid surface, the fishing frame 107 and the fishing net 108 will also follow the float 106 on the liquid surface, so that the fishing net 108 can catch the emulsified film on the liquid surface.

[0048] After the fermentation is completed, the fermentation liquid is discharged by opening the first valve 205 to facilitate the preparation of the biological enzyme. In this process, since the top of the telescopic tube 203 is connected to the float 106 through the connecting frame 202, the discharged fermentation liquid comes from the middle of the fermentation liquid, which prevents the taken-out fermentation liquid from containing the emulsified film on the liquid surface and the impurity precipitation at the bottom. As the liquid level drops, the float 106 will also drop with the telescopic tube 203 until the telescopic tube 203 is compressed to the top of the liquid discharge pipe 204, and then the first valve 205 is closed to stop taking out the fermentation liquid, and then the second valve 402 is opened to allow the impurity precipitation inside the fermentation tank to be discharged together with the remaining fermentation liquid through the sewage pipe 401. The fermentation liquid and other substances discharged from the sewage pipe 401 cannot be used for the preparation of biological enzymes, and therefore need to be harmlessly treated and discarded;

[0049] The present invention has a float 106 slidably installed on a transmission tube 105, and a fishing frame 107 with a fishing net 108 is installed on the side of the float 106. Since the float 106 can float the fishing frame 107 on the liquid surface, the driving motor 104 can drive the fishing net 108 to catch and remove the emulsified film and other films on the liquid surface when driving the transmission tube 105 to rotate, thereby avoiding affecting the aerobic fermentation of the fermentation liquid and making the fermentation more thorough.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0051] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A microbial fermentation tank for preparing biological enzymes, comprising a mounting frame (101), characterized in that: A tank body (102) is fixedly mounted on the top of the mounting frame (101); a top cover (103) is fixedly mounted on the top of the tank body (102) by means of bolts; the top cover (103) is used to seal the tank body (102); a driving motor (104) is fixedly mounted on the top of the top cover (103); a transmission tube (105) is fixedly connected to the power output end of the driving motor (104); the driving motor (104) is used to drive the transmission tube (105) to rotate; and the transmission tube (105) is fixedly mounted on the top of the top cover (103). A float (106) is slidably mounted on the driving tube (105), a fishing frame (107) is vertically fixedly connected to the side of the float (106), a fishing net (108) is fixedly connected inside the fishing frame (107), the fishing net (108) is used to catch impurity films on the liquid surface, the fishing frame (107) moves up and down on the driving tube (105) through the float (106), and the float (106) is used to suspend the fishing frame (107) on the liquid surface.

2. The microbial fermentation tank for preparing biological enzymes according to claim 1, characterized in that: The transmission tube (105) has a side surface fixedly provided with a slide groove (201), and the float (106) is slidably arranged on the transmission tube (105) through the slide groove (201). The bottom of the float (106) is fixedly connected with a connecting frame (202), and the connecting frame (202) is placed inside the transmission tube (105). A telescopic tube (203) is arranged inside the transmission tube (105), and the telescopic tube (203) is arranged at the bottom of the float (106). The top of the telescopic tube (203) is rotatably connected to the connecting frame (202), and the top of the telescopic tube (203) is connected to the lower surface of the float (106) through the connecting frame (202). The float (106) is fixedly connected with a connecting frame (202) at the bottom of the float (106). 06) The top end of the telescopic tube (203) is driven to move up and down inside the transmission tube (105) through the connecting frame (202); a liquid discharge pipe (204) is connected through the center of the bottom of the tank body (102), and a first valve (205) is fixedly installed at one end of the liquid discharge pipe (204) located outside the tank body (102), and the first valve (205) is used to control the through state of the liquid discharge pipe (204); the end of the telescopic tube (203) away from the float (106) is fixedly connected to the liquid discharge pipe (204), and the telescopic tube (203) is connected to the outside of the tank body (102) through the liquid discharge pipe (204).

3. The microbial fermentation tank for preparing biological enzymes according to claim 1, characterized in that: A mounting plate (301) is fixedly connected to the outer wall of one end of the transmission tube (105) away from the driving motor (104); four stirring plates (302) are evenly and vertically fixedly connected to the side of the mounting plate (301); the stirring plates (302) are fixedly connected to the transmission tube (105) via the mounting plate (301); and the stirring plates (302) are used to stir the material inside the tank body (102) via the transmission tube (105).

4. The microbial fermentation tank for preparing biological enzymes according to claim 2, characterized in that: The bottom of the tank body (102) is connected to a drain pipe (401), which is arranged on one side of the liquid discharge pipe (204). The drain pipe (401) is used to discharge impurities deposited at the bottom of the tank body (102). A second valve (402) is fixedly installed at one end of the drain pipe (401) located outside the tank body (102). The second valve (402) is used to control the through state of the drain pipe (401).

5. The microbial fermentation tank for preparing biological enzymes according to claim 4, characterized in that: A steam inlet pipe (501) is connected through the bottom of the tank body (102). The steam inlet pipe (501) is arranged on a side of the liquid discharge pipe (204) away from the sewage discharge pipe (401). The steam inlet pipe (501) is used to introduce steam into the tank body (102). A third valve (502) is fixedly installed at one end of the steam inlet pipe (501) located outside the tank body (102). The third valve (502) is used to control the through state of the steam inlet pipe (501).

6. The microbial fermentation tank for preparing biological enzymes according to claim 1, characterized in that: A material delivery port (601) is provided through the top of the top cover (103), and the material delivery port (601) is arranged on one side of the drive motor (104). A sealing cover (602) is fixedly installed above the material delivery port (601) by means of bolts, and the sealing cover (602) is used to seal the material delivery port (601). A handle (603) is fixedly connected to the upper surface of the sealing cover (602), and the handle (603) is used to hold the sealing cover (602).

7. The microbial fermentation tank for preparing biological enzymes according to claim 6, characterized in that: The top of the top cover (103) is provided with an additive delivery port (700), the additive delivery port (700) is arranged on a side of the drive motor (104) away from the material delivery port (601), a quick connector is arranged on the additive delivery port (700), and the additive delivery port (700) is used to deliver additives into the tank body (102).

8. The microbial fermentation tank for preparing biological enzymes according to claim 1, characterized in that: An observation hole (800) is provided on the side of the tank body (102), and a sealing glass is provided on the inner wall of the observation hole (800). The observation hole (800) is used to observe the liquid level inside the tank body (102).

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