Venturi tube bacillus velezensis fermentation device

Abstract

The utility model discloses a venturi tube bacillus velezensis fermentation device which comprises a tank body, an internal reflux mechanism and an external air inlet mechanism, an air outlet pipe, a feeding pipe and a discharging pipe are fixedly arranged on the tank body, a tubular heat exchanger is fixedly arranged in the tank body, the internal reflux mechanism comprises a water pipe, a water inlet pipe and a water outlet pipe, and the internal reflux mechanism comprises a water inlet pipe and a water outlet pipe. One end of the water outlet pipe extends out of the side wall of the tank body and is fixedly connected with the tank body, the ends, extending out of the tank body, of the water inlet pipe and the water outlet pipe are fixedly connected and communicated with a water pipe, a backflow control valve is fixedly arranged at the end, close to the water outlet pipe, of the water pipe, and a first tower-type air filter and a second tower-type air filter are fixedly arranged on the water pipe; the external air inlet mechanism comprises a surpassing pipe and a venturi pipe, one end of the surpassing pipe extends into the tank body and is fixedly connected with the tank body, the two ends of the venturi pipe are fixed and communicated with the surpassing pipe and the water outlet pipe respectively, and a one-way valve is fixedly arranged at the end, extending into the tank body, of the surpassing pipe. The utility model can reduce the energy consumption and ensure the stable operation of fermentation.

Description

Technical Field

[0001] The utility model belongs to the technical field of microbial fermentation equipment, in particular to a venturi Velezius bacillus fermentation device. Background Art

[0002] Fermentation refers to the process in which people use the life activities of microorganisms under aerobic or anaerobic conditions to prepare microbial cells themselves, direct metabolites or secondary metabolites. Fermentation usually refers to a certain decomposition process of organic matter by organisms. Fermentation is a biochemical reaction that humans have been exposed to for a long time. It is now widely used in the food industry, biological and chemical industries.

[0003] Bacillus Velez is a type of spore-forming Gram-positive bacteria that can be isolated from oceans, river sediments, soil, plant roots, plant tissues, and animal intestines. The colonies of Bacillus Velez are milky white, round, smooth, slightly convex, and sticky. It is widely distributed in nature and has excellent biological characteristics such as stress resistance, rapid growth, and easy separation. It also has the advantages of easy cultivation, safety, harmlessness, and pollution-free. Studies have found that Bacillus Velez can be used for wastewater treatment, water purification, and reducing the content of ammonia nitrogen, nitrite, total phosphorus, total nitrogen, and nitrate in water. The application of Bacillus Velez in industrial production is still in the early stages of research. There are still many areas that can be studied and expanded in the future, and it has broad application and development prospects.

[0004] Fermentation tanks are key biochemical reaction equipment in fermentation industrial production, and aerobic fermentation tanks are key equipment for fermentation industrial production of antibiotics, glutamic acid, citric acid, yeast, etc. In biological fermentation production, the universal fermentation tanks commonly used today have a transmission stirring device with a multi-stage mechanical stirrer in the tank, and a plurality of forms of ventilation devices are provided at the bottom of the tank, so that the culture medium materials are mixed more evenly, while increasing the dissolved oxygen rate, thereby increasing the oxygen utilization rate. However, the existing microbial aerobic fermentation tanks directly press air into the air compressor, and the air supply is too large, which will lead to increased energy consumption and increased operating costs. At the same time, the air contains a large amount of moisture, suspended matter and a small amount of microorganisms, which will pollute the culture medium in the fermentation tank directly when directly introduced into the tank body, thereby reducing the fermentation efficiency and purity, and even causing fermentation failure. Therefore, it is an existing problem to be solved urgently to develop a low-energy fermentation tank that can simultaneously achieve stirring and air introduction, and treat the introduced air. Utility Model Content

[0005] In view of the above problems, the utility model provides a venturi Velez subtilis fermentation device.

[0006] To achieve the above-mentioned purpose, the utility model provides a Venturi Velez Bacillus fermentation device, comprising a tank body with a hollow interior, an internal reflux mechanism, and an external air intake mechanism, the tank body is fixedly provided with an air outlet pipe, a feed pipe, and a discharge pipe respectively connected thereto, the tank body is fixedly provided with a tubular heat exchanger, the internal reflux mechanism comprises a water pipe arranged on the side of the tank body, a water inlet pipe at one end extending out of the side wall of the tank body and fixedly connected to the tank body, and a water outlet pipe arranged above the water inlet pipe, one end of the water outlet pipe also extending out of the side wall of the tank body and fixedly connected thereto, the ends of the water inlet pipe and the water outlet pipe extending out of the tank body are respectively fixedly connected and connected to the water pipe, the water pipe is fixedly provided with a reflux pipe control valve at one end close to the water outlet pipe, the water pipe is fixedly provided with a first tower air filter and a second tower air filter at intervals between the reflux pipe control valve and the water outlet pipe, the first tower air filter and the second tower air filter are both connected to the water pipe;

[0007] The external air intake mechanism includes an override pipe arranged at a vertical height of the tank body, and a venturi tube arranged in the tank body between the water outlet pipe and the override pipe. One end of the override pipe extends into the tank body and is fixedly connected thereto. The two ends of the venturi tube are respectively fixed and communicated with the override pipe and the water outlet pipe. A one-way valve is fixedly provided at the end of the override pipe extending into the tank body.

[0008] Optionally, the external air intake mechanism also includes a branch pipe, which includes a horizontal pipe arranged parallel to the transcending pipe and vertical pipes respectively arranged at both ends of the horizontal pipe along its length direction. The top ends of the two vertical pipes are fixed and connected to the horizontal pipe, and the bottom ends are fixed and connected to the transcending pipe. A first disc-type air filter is fixedly provided on the horizontal pipe.

[0009] Optionally, a second disc-type air filter is fixedly provided on the override pipe below the first disc-type air filter.

[0010] Optionally, a first control valve is fixedly provided on the first tower air filter, a second control valve is fixedly provided on the second tower air filter, a third control valve is fixedly provided on the cross pipe, and a fourth control valve is fixedly provided on the transcending pipe.

[0011] Optionally, the tank body is provided with a pH electrode insertion hole, a thermometer electrode insertion hole, an acid-base adjustment and dosing hole, and a thermometer insertion hole.

[0012] Optionally, an observation tube connected to the interior of the tank body is fixedly provided on the top of the tank body.

[0013] Optionally, a valve is fixedly provided on the discharge pipe.

[0014] Optionally, support feet are fixedly provided at the bottom of the tank body.

[0015] The beneficial effects of the utility model are:

[0016] 1. The application adopts a tubular heat exchanger to control and grasp the temperature inside the tank, which can provide a better fermentation environment for Bacillus Velez subtilis and facilitate the stable fermentation. Filtered air can be introduced during the reflux stirring process, reducing the energy consumption generated by mechanical stirring or air compressor stirring. At the same time, the internal reflux utilizes excess oxygen to avoid the entry of miscellaneous bacteria during the external air intake process, which can ensure the stable and efficient operation of the fermentation production of Bacillus Velez subtilis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram to show the structure of the external air intake mechanism.

[0020] Description of Reference Numerals

[0021] 1. Tank; 11. Observation tube; 12. Air outlet pipe; 13. Feed pipe; 14. Discharge pipe; 141. Valve; 15. Support foot; 16. pH electrode insertion hole; 17. Thermometer electrode insertion hole; 18. Acid-base adjustment and dosing hole; 19. Thermometer insertion hole; 2. Internal reflux mechanism; 21. Water pipe; 211. Reflux pipe control valve; 22. Water inlet pipe; 23. Water outlet pipe; 24. Water pump; 3. External air intake mechanism; 31. First tower air filter filter; 311, first control valve; 32, second tower air filter; 321, second control valve; 33, override pipe; 331, one-way valve; 34, venturi tube; 35, branch pipe; 351, horizontal pipe; 352, vertical pipe; 36, first disc air filter; 361, third control valve; 37, second disc air filter; 371, fourth control valve; 4, tubular heat exchanger; 41, heat exchange medium inlet; 42, heat exchange medium outlet. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] Reference Figure 1A Venturi Velez subtilis fermentation device comprises a tank body 1, an internal reflux mechanism 2, and an external air intake mechanism 3. The tank body 1 is hollow inside, and an observation tube 11 is fixedly provided at one end of the top of the tank body 1, and the observation tube 11 is connected to the inside of the tank body 1. An air outlet pipe 12 is fixedly provided at the end of the top of the tank body 1 away from the observation tube 11, and the air outlet pipe 12 is connected to the inside of the tank body 1. A feed pipe 13 connected to the inside of the tank body 1 is fixedly provided on the side of the tank body 1. A discharge pipe 14 is fixedly provided at the bottom end of the tank body 1, and the discharge pipe 14 is connected to the inside of the tank body 1, and a valve 141 is fixedly provided on the discharge pipe 14. A supporting foot 15 is also fixedly provided at the bottom end of the tank body 1. A tubular heat exchanger 4 is fixedly arranged inside the tank body 1 along its height direction, and a heat exchange medium inlet 41 and a heat exchange medium outlet 42 are opened on the side wall of the tank body 1 near the tubular heat exchanger 4, and the heat exchange medium inlet 41 and the heat exchange medium outlet 42 are respectively connected to the top of the tubular heat exchanger 4. The internal reflux mechanism 2 and the external air intake mechanism 3 are arranged on the side of the tank body 1, and are both connected to the inside of the tank body 1.

[0024] When in use, the Velez Bacillus seed liquid and culture liquid are placed into the tank body 1 through the feed pipe 13, and the external air intake mechanism 3 and the internal reflux mechanism 2 are started, so that air can be continuously introduced into the tank body 1 during the reflux stirring process to increase the concentration of dissolved oxygen in the water. The Velez Bacillus fermentation reaction requires a certain temperature and pH value, and the tubular heat exchanger 4 in the tank body 1 can cyclically heat and dissipate heat for the tank body 1 as needed to ensure the stable progress of the Velez fermentation reaction.

[0025] Reference Figure 1 The internal reflux mechanism 2 includes a water pipe 21, a water inlet pipe 22, a water outlet pipe 23, and a water pump 24. The water pipe 21 is arranged outside the tank body 1 along the height direction of the tank body 1. The water inlet pipe 22 and the water outlet pipe 23 are arranged at intervals along the height direction of the tank body 1, and the water inlet pipe 22 is arranged at the bottom of the tank body 1, and the water outlet pipe 23 is arranged above the water inlet pipe 22. One end of the water inlet pipe 22 and the water outlet pipe 23 respectively extends out of the side wall of the tank body 1, and both are fixedly connected to the side wall of the tank body 1, and both are connected to the inside of the tank body 1. The water inlet pipe 22 is fixedly connected and connected to the bottom of the water pipe 21 at the end extending out of the tank body 1. The water outlet pipe 23 is fixedly connected and connected to the top of the water pipe 21 at the end extending out of the tank body 1. A reflux pipe control valve 211 is fixedly provided at the top of the water pipe 21 at the end close to the water outlet pipe 23. The water pump 24 is fixedly arranged at the bottom of the water pipe 21. When in use, the reflux pipe control valve 211 is opened and the water pump 24 is started, so that the water generated during the fermentation process in the tank body 1 can be refluxed.

[0026] Reference Figure 1 The tank body 1 is provided with a pH electrode insertion hole 16 , a thermometer electrode insertion hole 17 , an acid-base adjustment and dosing hole 18 , and a thermometer insertion hole 19 on the side wall near the water pipe 21 , and the four holes are spaced apart along the height direction of the tank body 1 .

[0027] Reference Figure 1 and Figure 2 The external air intake mechanism 3 includes a first tower air filter 31, a second tower air filter 32, a transcending pipe 33, a venturi 34, a branch pipe 35, a first disc air filter 36, and a second disc air filter 37. The first tower air filter 31 and the second tower air filter 32 are fixedly arranged in the water pipe 21 between the return pipe control valve 211 and the water outlet pipe 23. The first tower air filter 31 and the second tower air filter 32 are both connected to the inside of the water pipe 21, and a first control valve 311 is fixedly arranged at the bottom of the first tower air filter 31, and a second control valve 321 is fixedly arranged at the bottom of the second tower air filter 32. The transcending pipe 33 is arranged vertically at the height of the tank body 1, and the transcending pipe 33 is arranged above the water pipe 21. One end of the overrunning pipe 33 along its length direction extends into the tank body 1 and is fixedly connected to the side wall of the tank body 1. A one-way valve 331 is fixedly arranged at the end of the overrunning pipe 33 extending into the tank body 1, and the positive ventilation direction of the one-way valve 331 is the direction of the venturi tube 34. The overrunning pipe 33 can be connected to the air compressor and the gas storage tank at the end away from the tank body 1. The venturi tube 34 is arranged along the height direction of the tank body 1, and the venturi tube 34 is arranged in the tank body 1 between the water outlet pipe 23 and the overrunning pipe 33. The top end of the venturi tube 34 is fixed and connected to the overrunning pipe 33, and the bottom end is fixed and connected to the water outlet pipe 23.

[0028] Reference Figure 2 The branch pipe 35 includes a transverse pipe 351 and two vertical pipes 352. The transverse pipe 351 is arranged parallel to the transcending pipe 33. The two vertical pipes 352 are arranged perpendicular to the transcending pipe 33. The two vertical pipes 352 are arranged between the transverse pipe 351 and the transcending pipe 33, and are respectively arranged at both ends of the transverse pipe 351 along its length direction. The top ends of the two vertical pipes 352 are fixed and connected to the transverse pipe 351, and the bottom ends are fixed and connected to the transcending pipe 33. The first disc air filter 36 is fixed on the transverse pipe 351, the first disc air filter 36 is connected to the inside of the transverse pipe 351, and a third control valve 361 is fixed on the transverse pipe 351 on the side of the first disc air filter 36 away from the tank body 1. The second disc air filter 37 is fixed on the transcending pipe 33 below the first disc air filter 36, the second disc air filter 37 is connected to the inside of the transcending pipe 33, and a fourth control valve 371 is fixed on the transcending pipe 33 below the third control valve 361.

[0029] When in use, the end of the override pipe 33 away from the tank body 1 is connected to the air compressor and the gas storage tank. After the Bacillus Velez subtilis seed liquid and the culture liquid are added into the tank body 1, the first control valve 311 and the second control valve 321 are closed, and the third control valve 361 or the fourth control valve 371 is opened, so that air can be introduced into the water outlet pipe 23, and the air will also enter the water flow through the venturi tube 34 to increase the dissolved oxygen concentration in the water. Alternatively, after part of the air is introduced, the third control valve 361 or the fourth control valve 371 is closed, and the first control valve 311 or the second control valve 321 is opened. Due to the Bernoulli principle, the air will pass through the first tower air filter 31 and the second tower air filter 32, and then enter the water outlet pipe 23 along the venturi tube 34, thereby reducing the energy consumption of the air compressor and increasing the dissolved oxygen concentration of the fermentation liquid.

[0030] The use principle of the utility model is as follows: Bacillus Velez seed liquid and culture liquid are added into the tank body 1 through the feed pipe 13, the override pipe 33 is connected with the air compressor and the gas storage tank, the first control valve 311 and the second control valve 321 are closed, the water pump 24 is opened, reflux stirring is started, and then the third control valve 361 or the fourth control valve 371 is opened. During the stirring process, air will enter the water flow through the venturi 34, thereby increasing the concentration of dissolved oxygen in the water. Alternatively, after part of the air is introduced, the third control valve 361 and the fourth control valve 371 are closed, and the first control valve 311 or the second control valve 321 is opened. Due to the Bernoulli principle, the air will flow back to the outlet pipe 23 along the venturi 34 through the first tower air filter 31 and the second tower air filter 32, thereby reducing the energy consumption of the air compressor and increasing the concentration of dissolved oxygen in the fermentation liquid. The tubular heat exchanger 4 in the tank body 1 heats and dissipates heat from the tank body 1 as required. To ensure a stable pH value, the pH value in the tank body 1 can also be adjusted through the acid-base adjustment dosing hole 18 to ensure the stable progress of the Velez fermentation reaction.

[0031] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A Venturi Velez subtilis fermentation device, characterized in that: The invention comprises a tank body (1) having a hollow interior, an internal reflux mechanism (2), and an external air intake mechanism (3); the tank body (1) is provided with an air outlet pipe (12), a feed pipe (13), and a discharge pipe (14) respectively connected thereto; a tubular heat exchanger (4) is provided inside the tank body (1); the internal reflux mechanism (2) comprises a water pipe (21) arranged on the side of the tank body (1), a water inlet pipe (22) having one end extending out of the side wall of the tank body (1) and fixedly connected to the tank body (1), and a water outlet pipe (23) arranged above the water inlet pipe (22), one end of the water outlet pipe (23) also extending out of the tank body (1) ) side wall and fixedly connected thereto, one end of the water inlet pipe (22) and the water outlet pipe (23) extending out of the tank body (1) are respectively fixedly connected to and communicated with the water pipe (21), a return pipe control valve (211) is fixedly provided at one end of the water pipe (21) close to the water outlet pipe (23), a first tower air filter (31) and a second tower air filter (32) are fixedly provided on the water pipe (21) between the return pipe control valve (211) and the water outlet pipe (23), and the first tower air filter (31) and the second tower air filter (32) are both communicated with the water pipe (21); The external air intake mechanism (3) comprises an override pipe (33) arranged at a height perpendicular to the tank body (1), and a venturi tube (34) arranged in the tank body (1) between the water outlet pipe (23) and the override pipe (33); one end of the override pipe (33) extends into the tank body (1) and is fixedly connected thereto; two ends of the venturi tube (34) are respectively fixed to and communicate with the override pipe (33) and the water outlet pipe (23); and a one-way valve (331) is fixedly provided at the end of the override pipe (33) extending into the tank body (1).

2. The fermentation device of Bacillus velezensis according to claim 1, characterized in that: The external air intake mechanism (3) further comprises a branch pipe (35), the branch pipe (35) comprising a transverse pipe (351) arranged parallel to the transcending pipe (33), and vertical pipes (352) respectively arranged at both ends of the transverse pipe (351) along the length direction thereof, the top ends of the two vertical pipes (352) being fixed to and in communication with the transverse pipe (351), and the bottom ends being fixed to and in communication with the transcending pipe (33), and a first disc-type air filter (36) being fixedly arranged on the transverse pipe (351).

3. The fermentation device of Bacillus velezensis according to claim 2, characterized in that: A second disc-type air filter (37) is fixedly arranged on the transcending pipe (33) below the first disc-type air filter (36).

4. The venturi Velez subtilis fermentation device according to claim 3, characterized in that: The first tower air filter (31) is fixedly provided with a first control valve (311), the second tower air filter (32) is fixedly provided with a second control valve (321), the cross pipe (351) is fixedly provided with a third control valve (361), and the transcending pipe (33) is fixedly provided with a fourth control valve (371).

5. The venturi-Bacillus Velez fermentation device according to claim 1, characterized in that: The tank body (1) is provided with a pH electrode insertion hole (16), a thermometer electrode insertion hole (17), an acid-base adjustment and dosing hole (18), and a thermometer insertion hole (19).

6. The venturi Velez subtilis fermentation device according to claim 1, characterized in that: The top of the tank body (1) is fixedly provided with an observation tube (11) which is in communication with the interior thereof.

7. The fermentation device of Bacillus venezuela according to claim 1, characterized in that: The discharge pipe (14) is fixedly provided with a valve (141).

8. The venturi-Bacillus Velez fermentation device according to claim 1, characterized in that: The bottom of the tank body (1) is fixedly provided with supporting feet (15).

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