A clean production device and method for fermentation ingredients

Abstract

The present invention discloses a clean production device and method for fermentation ingredients, belonging to the field of bioengineering technology. The device comprises a negative pressure batching silo and a batching tank. The negative pressure batching silo is connected to a feeding port of the batching tank, and a recovery device is connected above the feeding port to collect dust and return it to the batching tank. The beneficial effects of the present invention are as follows: the present invention solves the problem of 1%-2% loss of powdered raw and auxiliary materials such as corn starch per batch due to disordered dust emission during the batching process, achieves full recycling and ensures the relative accuracy of the fermentation medium formula, lays a foundation for the accurate medium formula for stable fermentation production, and is beneficial to the stability of fermentation production level and ensures fermentation quality.

Description

Technical Field

[0001] The present invention relates to the technical field of bioengineering, and in particular to a clean production device and method for fermentation ingredients. Background Art

[0002] Zhongshengmycin is a new type of agricultural antibiotic biopesticide with low toxicity, low accumulation, and environmental friendliness. It has strong inhibitory or killing effects on Gram-positive and Gram-negative bacteria, as well as filamentous fungi. It inhibits peptide bond formation in pathogenic bacterial proteins, ultimately leading to bacterial death. It also inhibits mycelial growth and spore germination, combating fungal diseases. It has excellent control effects against rice bacterial blight, cabbage soft rot, apple ring rot, and apple leaf spot. It is low-toxic and safe for humans and animals, and environmentally friendly. Approved by the China Green Food Association as a "Green Food Production Material," it is a must-have biopesticide for pollution-free fruit and vegetable production bases and government procurement, and is one of the biopesticides promoted and actively developed by the state. Therefore, vigorously developing Zhongshengmycin fermentation capacity, energy conservation and consumption reduction, recycling, and clean production, and expanding the market share of Zhongshengmycin as a green food production material will contribute to human food health and have significant social and economic benefits.

[0003] The industrial fermentation production of Sinobiotics has been going on for 20 years. The fermentation production uses a large amount of corn starch, soybean cake powder, glucose, inorganic salts and trace elements as culture media. For a long time, the preparation process of fermentation culture media has been carried out in an open batching space, causing corn starch, soybean cake powder, glucose and other grain-like powdered materials to fly everywhere, which is not only detrimental to the health of employees, but also causes the loss of various components of the culture medium formula, resulting in a relative deviation in the culture medium ratio. There is even a safety hazard of dust flash explosion caused by the accumulation of corn starch and other dust during the start-up and shutdown process of the mixing tank; even if a high-power exhaust fan is added to the wall of the batching room, it only guides the dust to the outdoor unorganized emission, causing 40m 3 Each batch of powdered materials in the fermentation tank loses 50 to 100 kilograms of powdered materials, resulting in an imbalance in the formula of the Sinobiotics fermentation medium. The fermentation level of Sinobiotics often fluctuates, and the cause of this fluctuation in fermentation production level remains unknown. At the same time, new environmental pollution problems are created. If production is expanded, this negative impact will be even more prominent, and the amount of culture medium lost each year will exceed 10 tons, bringing great pressure to the protection of the atmospheric environment.

[0004] Therefore, in order to ensure the stable and high-yield production level of Sinobiotics fermentation, starting from the Sinobiotics fermentation ingredient preparation process, it is ensured that the dust of powdered materials such as corn starch, soybean cake powder, glucose, etc. does not fly everywhere during the preparation process, and is collected in an orderly manner, and then fully returned to the ingredients for use, to ensure the accuracy of the culture medium formula, and achieve a balanced and stable Sinobiotics fermentation level; at the same time, create a clean, environmentally friendly and safe ingredient preparation site, improve the occupational health protection level of employees, realize the green production of Sinobiotics fermentation, improve the level of industrialized fermentation production of Sinobiotics in green production materials, and meet the government procurement and market user needs of large-scale green drug use in the rapidly developing green ecological agriculture. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present invention discloses a fermentation ingredient clean production device including a negative pressure ingredient bin and a ingredient tank, wherein the negative pressure ingredient bin is connected to a feeding port of the ingredient tank, and a recovery device for collecting dust and returning it to the ingredient tank is connected above the feeding port.

[0006] Preferably, the recovery device includes at least one cyclone separation device and at least one induced draft blower, the air inlet of the cyclone separation device is connected to the side wall of the negative pressure dosing bin located above the feeding port through an induced draft pipe, the air outlet of the cyclone separation device is connected to the air inlet of the induced draft blower, the bottom outlet of the cyclone separation device is installed with a collecting bucket, the air outlet of the induced draft blower is tangentially connected to the air inlet of the cyclone separation water film dust removal wire mesh water mist interception system, the bottom outlet of the cyclone separation water film dust removal wire mesh water mist interception system is connected to the dosing tank through a pipe, and a circulating water pump is installed on the pipe.

[0007] Preferably, the cyclone separation device is composed of a primary cyclone separator and a secondary cyclone separator, the primary cyclone separator and the secondary cyclone separator are connected in series, the induced air duct is connected to the air inlet of the primary cyclone separator in a tangential direction, the air outlet of the primary cyclone separator is connected to the air inlet of the secondary cyclone separator in a tangential direction, and the air outlet of the secondary cyclone separator is connected to the air inlet of the induced air blower;

[0008] The diameters of the air inlet, air outlet and cylinder of the secondary cyclone separator are smaller than those of the primary cyclone separator.

[0009] Preferably, the inlet and outlet wind speeds of the secondary cyclone separator are greater than the inlet and outlet wind speeds of the primary cyclone separator.

[0010] Preferably, a first-stage quick-opening material collection barrel is installed at the bottom of the first-stage cyclone separator, and a second-stage quick-opening material collection barrel is installed at the bottom of the second-stage cyclone separator.

[0011] Preferably, the negative pressure batching bin, the batching tank and the cyclone separation water film dust removal wire mesh water mist interception system each include at least one.

[0012] Preferably, the cyclone separation water film dust removal wire mesh water mist interception system consists of a circulating water tank, a circulating water pump, a cyclone separation water film dust removal separation section, a wire mesh water mist interception section, and a water mist interception exhaust pipe. The cyclone separation water film dust removal separation section includes a cyclone separation water film dust removal section and a cyclone separation water film dust removal section tangential water spray port. The circulating water tank is arranged at the bottom of the cyclone separation water film dust removal wire mesh water mist interception system. The top of the circulating water tank is connected to one end of the cyclone separation water film dust removal section, the other end of the cyclone separation water film dust removal section is connected to the bottom of the cyclone separation water film dust removal section tangential water spray port, and the air inlet of the cyclone separation water film dust removal section is connected to the air outlet of the induced blower.

[0013] The diameter of the air inlet and the cylinder of the cyclone separation water film dust removal section are smaller than the air outlet and cylinder of the secondary cyclone separator;

[0014] The top of the tangential water spray outlet of the cyclone separation water film dust removal section is connected to the bottom of the wire mesh water mist interception section, the top of the wire mesh water mist interception section is connected to the bottom of the water mist interception exhaust pipe, and the inlet of the circulating water pump is connected to the side of the circulating water tank through a pipe.

[0015] Preferably, the inner diameter of the wire mesh water mist interception section is larger than the inner diameter of the cyclone separation water film dust removal section, and the wire mesh water mist interception section is equipped with two or more sets of wire meshes with a thickness of not less than 100 mm. An inner ring tube covered with small holes is installed above each of the two sets of wire meshes. Circulating water is sprayed from the inner ring tube to form water mist that is sprayed and washed down from above the wire meshes;

[0016] The total height of the cyclone separation water film dust removal wire mesh water mist interception system, including the water mist interception exhaust pipe, is not less than 25m, and the exhaust pipe is equipped with a second-level or higher wire mesh interception droplet device;

[0017] The diameter of the water mist interception exhaust pipe is larger than the diameter of the air inlet pipe of the cyclone separation water film dust removal separation section;

[0018] The cyclone separation water film dust removal separation section has four water spraying outlets at the top of the separation section which are arranged at 90 degrees from the outer ring pipe and spray water in a tangential direction.

[0019] Preferably, a 50mm thick wire mesh partition is provided at every 5 meters in height of the exhaust pipe.

[0020] Preferably, the outlet of the circulating water pump is connected to a tee, one outlet of the tee is connected to a valve B, and the valve B is connected to the inner ring pipe through a pipeline.

[0021] Preferably, a pipe with a valve F is also installed on the side of the cyclone separation water film dust removal and separation section, and the end of the pipe with the valve F away from the cyclone separation water film dust removal and separation section is installed on the pipe between the valve B and the inner ring pipe.

[0022] Preferably, the other outlet of the tee is connected to valve C.

[0023] Preferably, the pipe outlet connected to the valve C is arranged in the batching tank.

[0024] Preferably, the circulating water tank is connected to a drinking water pipe, and the drinking water pipe is equipped with a control valve D.

[0025] Preferably, the batching tank is further provided with a drinking water control valve E, and the negative pressure batching bin is further provided with a tap water pipe, one path of the tap water pipe is connected to a manually controlled high-pressure water gun, and the other path is connected to the drinking water control valve E of the batching tank.

[0026] Preferably, the batching tank is further provided with a culture medium delivery pump and a culture medium delivery pipeline, and the end of the culture medium delivery pipeline away from the batching tank is installed on the fermentation tank.

[0027] Preferably, the recovery device also includes a dust suction wall, which is connected to the air inlet of the cyclone separation device through an induced draft duct, and the dust suction wall is connected to the air inlet of the cyclone separation device through an induced draft duct. The dust suction wall is embedded with water pipes on the top and both sides facing the feeding port, and the water pipes are evenly distributed with atomization ports with adjustable angles.

[0028] Preferably, an air duct is provided on the inner wall of the dust suction and removal wall, and the air duct located on the air duct extends 100 mm from the inner wall of the dust suction and removal wall, and the extended part of the pipe wall is evenly covered with holes with a diameter of 20 mm and a hole spacing of 20 mm; the pipe mouth is sealed with a blind plate with a radius of 500 mm, and the blind plate is evenly covered with holes with a diameter of 15 mm and a hole spacing of 15 mm.

[0029] Preferably, a quick-opening washing port is provided on the upper top of the induced draft duct, and the other end of the induced draft duct is connected to the air inlet of the induced draft blower.

[0030] Preferably, the dust suction and removal wall is thicker at the top and thinner at the bottom, is wider than the batching tank, has a height of not less than 1000 mm, and has a thickness of not less than 200 mm at the thinnest part of the bottom.

[0031] Preferably, a quick-opening door is provided on the dust-removing wall on the inner side of the negative pressure batching bin.

[0032] Preferably, a sealing tape is used to seal the inner wall and the outer wall of the dust suction and removal wall, and a valve A is installed at each of the bottom sealing tapes at a distance of 100 mm from the inner wall of the batching tank on both sides.

[0033] Preferably, an air inlet with a radius of 300 mm is opened at the center of the wall at the midpoint of the inner wall of the dust suction and removal wall.

[0034] Preferably, the upper half of the outer wall of the dust suction and removal wall is evenly covered with holes with a diameter of 10 mm and a hole spacing of 10 mm; the lower half is evenly covered with holes with a diameter of 5 mm and a hole spacing of 5 mm.

[0035] Preferably, the negative pressure batching bin is further provided with a differential pressure gauge, the water pipe is further provided with a total water inlet valve, and the negative pressure batching bin is further provided with a flow port with adjustable airflow.

[0036] Preferably, the feeding port has a lid that can be opened by a hinged link.

[0037] Preferably, the motor of the stirring device of the batching tank is arranged on the cover surface of the batching tank outside the negative pressure batching bin, and the stirring shaft of the stirring device extends into the batching tank. The stirring shaft has two layers of stirring paddles. The bottom stirring paddle is located at the welding point between the batching tank cylinder and the head at the bottom of the batching tank, and the upper stirring paddle is located at one-quarter of the height of the cylinder. The stirring paddle is a propeller.

[0038] Preferably, one end of the air duct is connected to the dust suction and removal wall at an adjustable angle, the preferred angle being 5-30 degrees, a quick-opening washing port is provided at the upper top of the air duct, and the other end of the air duct is connected to the air inlet of the first-stage cyclone separator.

[0039] The present invention also provides a clean production method for fermentation ingredients, including the steps of directional drainage, aggregation, separation and recycling of disorderly floating raw and auxiliary material dust generated during the feeding process in a negative pressure batching bin; recycling of dust removal wastewater; and cleaning the batching tank and culture medium delivery pipeline with drinking water.

[0040] Directional drainage, aggregation, separation and recycling of dust: The feeding process is carried out in a negative pressure place of ≥20 Pascal. Since the air suction port formed by the negative pressure is on the inner wall of the dust suction wall, a small amount of dust raised during the feeding process will drift in a direction toward the dust suction wall due to the negative pressure. Since the dust suction wall has a special structure that is thick at the top and thin at the bottom, when the small amount of dust drifts to the outer wall of the dust suction wall above the feeding port, it will collide with the water mist sprayed from the top part of the dust suction wall and the water pipe atomization ports embedded on both sides to form granular mist droplets that fall down. The size of the water mist is adjusted to ensure the bottom During the falling process, the dust gathers and grows and falls directly into the batching tank, which reduces the overflow of dust. Even if there is still a small amount of dust that passes through the dust suction wall and is sucked into the suction pipe, the dust will be dampened in the process of passing through the dust suction wall and will collide with each other to form larger particles. When the gas containing the larger particles enters the separation tube of the first-stage cyclone separation device along the axial direction at a speed of more than 20m / s, the airflow is strongly rotated by the guide blades of the first-stage cyclone separation device, and the airflow spirals downward along the cylinder into the cyclone cylinder, densely packed. The damp particles and dust with large density are thrown to the wall of the device under the action of centrifugal force, and fall down along the wall of the cylinder into the first-stage quick-opening collecting barrel under the action of gravity; the rotating air flow contracts in the cylinder and flows toward the center, forming a secondary vortex upward and flows out through the air outlet pipe on the top of the first-stage cyclone separator; the air flowing out of the pipe, which carries a very small amount of damp residual fine particles and dust, enters the air inlet of the second-stage cyclone separator in a tangential direction at a speed of more than 22m / s; since the inlet and outlet pipe diameters of the second-stage cyclone separator are smaller than those of the first-stage cyclone separator, Under the condition of constant flow rate, the speed of air in and out is faster, and the airflow is guided by the guide vanes of the secondary cyclone separator to produce a stronger rotation. The airflow spirals downward along the cylinder and enters the cyclone cylinder. The damp particles and dust particles of the same density will generate a greater centrifugal force. The damp particles and dust particles with a slightly smaller density escaping from the primary cyclone separator will also be thrown to the wall of the secondary cyclone separator under the action of a centrifugal force far exceeding that of the primary cyclone separator, where they collide and gather, and then fall along the cylinder wall into the secondary quick-opening collection barrel under the action of gravity.If there is still a very small amount of damp fine dust entering the cyclone separation water film dust removal wire mesh water mist interception system at a speed of more than 25m / s from the air outlet of the secondary cyclone separation device, since the diameter of the cyclone separation water film dust removal section and the cylinder of the cyclone separation water film dust removal wire mesh water mist interception system are smaller than the air outlet and the cylinder of the secondary cyclone separation device, the damp fine dust enters the cyclone separation water film dust removal section at a faster speed and is thrown to the inner wall of the cylinder for collision and aggregation under the action of centrifugal force again, and is at the same time sprayed by four nozzles on the outer ring tube on the upper part of the cylinder at 90 degrees to each other and in a tangential direction to the cylinder. The water film formed by the nozzle is adhered to the water, flows down along the wall of the cylinder, and falls into the water of the circulating water tank. The rotating airflow flows toward the center into the ascending pipe and enters the wire mesh water mist interception section. The diameter of the wire mesh water mist interception section is much larger than the diameter of the ascending pipe. The speed of the rotating upward airflow drops sharply, and the droplets carrying extremely fine dust further collide and gather and fall into the water tank with the water film formed by the descending water mist; the upward airflow with a sudden drop in airflow speed passes through the wire mesh filled with water mist, then passes through the water mist spray, then passes through the wire mesh filled with water mist, and finally passes through the two wire mesh water mist interception processes of water mist spray, realizing the upward airflow and the downward airflow. The mist liquid and the liquid-filled wire mesh are in full contact, mixing and material exchange. The upward airflow is in constant contact and exchange with the downward water mist and water film. Extremely small particle droplets are constantly and fully leached, gathered into large droplets or water film flows and fall into the water tank at the bottom; the cyclone separation water film dust removal wire mesh water mist interception system, including the exhaust pipe, is ≥25 meters high. The diameter of the exhaust pipe is larger than the diameter of the air inlet of the cyclone separation water film dust removal section. There is a 50mm thick metal wire mesh partition every 5 meters. The exhaust flow rate of the exhaust pipe is slower than the inlet flow rate of the cyclone separation water film dust removal section, and the water vapor suspended in the slowly discharged water vapor The fine water mist is more easily adsorbed and condensed upon encountering the wire mesh. Once the mist continues to condense to a certain size, it falls downward due to gravity into the circulating water tank at the bottom of the cyclone separation water film dust removal wire mesh water mist interception system. After the two-stage speed-increasing cyclone separation of damp particles and the subsequent speed reduction interception by the cyclone separation water film dust removal wire mesh water mist interception system, the exhaust gas discharged from the exhaust pipe outlet contains virtually no solids. The exhaust gas was sampled and tested for organized exhaust gas according to the national "HJ836-2017 Gravimetric Method for the Determination of Low-Concentration Particulate Matter in Exhaust Gases from Stationary Pollution Sources," and no low-concentration particulate matter was detected.

[0041] After the feeding is completed, turn off the atomized water on the dust removal wall, adjust and increase the negative pressure of the negative pressure batching bin to a negative pressure gauge ≥ 25 Pascal, continue to run at negative pressure for more than 10 minutes, and suck the trace amount of damp dust remaining on the inner wall of the pipeline into the quick-opening aggregate barrel of the first-level cyclone separation device and the second-level cyclone separation device and the circulating water tank, and turn off the induced blower; close the quick-opening aggregate barrel butterfly valve, remove the quick-opening aggregate barrel, and pour the damp dust that falls into the first-level quick-opening aggregate barrel at the bottom of the first-level cyclone separation device and the second-level quick-opening aggregate barrel at the bottom of the second-level cyclone separation device into the batching tank. At the same time, wash the first-level aggregate barrel and the second-level aggregate barrel with water, add the washing water into the batching tank and stir evenly, and then pump it into the fermentation tank through the culture medium delivery pump and pipeline.

[0042] Dust removal wastewater recovery:

[0043] Water recovery in the circulating water tank: After measuring the volume of the prepared culture medium in the batching tank and delivering it to the fermentation tank through the feeding pump, the water in the circulating water tank of the cyclone separation water film dust removal wire mesh water mist interception system is pumped back to the batching tank by the circulating water pump: turn off the induced blower, open valve C, close valve B, switch the circulating water pump to discharge water, pump the water in the circulating water tank into the batching tank, and turn off the circulating water pump.

[0044] Recovery of washing water: Open the high-pressure water gun connected to the tap water to spray the dust suction wall. At the same time, use the quick-opening washing port of the induced draft duct outside the negative pressure batching bin to spray the inner wall of the induced draft duct. Flush the dust and liquid droplets adhering to the inner and outer walls of the dust suction wall and the inner wall of the induced draft duct into the batching tank. At the same time, open the two valves at the bottom of the dust suction wall to allow the liquid with residual dust in the interlayer of the dust suction wall to flow into the batching tank until the outflowing liquid is clear. Measure the volume and pump it into the fermentation tank through the culture medium delivery pump and pipeline.

[0045] Drinking water cleaning batching tank and culture medium delivery pipeline: switch the circulating water pump outlet valve C to close, valve B to open, and valve F to open; open the drinking water inlet valve D of the circulating water tank, add a certain amount of drinking water, close the drinking water inlet valve D, start the circulating water pump, spray and clean the metal screen of the cyclone separation water film dust removal wire mesh water mist interception system for more than 15 minutes, and wash the residual dust droplets into the circulating water tank. Through the valve switch, the water in the circulating water tank is pumped into the batching tank again, and the water in the batching tank is measured and pumped into the fermentation tank. After the equipment is rinsed more than 2 times in small amounts, the washing water is pumped into the batching tank, and then the water in the batching tank is pumped into the fermentation tank, so that the culture medium delivery pipeline from the batching tank to the fermentation tank is cleaned, and there is no residual culture medium, so that the error of the culture medium formula is minimized;

[0046] Measure the volume of ingredients in the fermentation tank. According to the difference between the measured volume in the fermentation tank and the volume required for the ingredients, open the drinking water valve E to add the required volume to the ingredient tank, start the culture medium delivery pump, and pump the added drinking water into the fermentation tank.

[0047] The fermentation ingredient clean production device and method of the present invention are applied to the production process of Zhongshengmycin fermentation ingredients, so that dust can be collected in an orderly manner and fully recycled, and environmental pollution caused by unorganized dust emission is eliminated, thereby achieving clean production; the risk of flash explosion caused by large amounts of dust accumulation in the mixing motor of the ingredient tank is greatly reduced; the labor health and working environment of employees are greatly improved; at the same time, the fluctuation range of the Zhongshengmycin fermentation production level is stabilized from the original range of ±20% or even higher to within a fluctuation range of 10%, and good economic and social benefits are achieved.

[0048] Beneficial effects:

[0049] The beneficial effects produced by the technical solution of the present invention are as follows:

[0050] (1) The present invention solves the problem of 1%-2% loss of powdered raw and auxiliary materials such as corn starch in each batch due to disordered dust emission during the batching process, achieves full recycling and utilization, ensures the relative accuracy of the fermentation medium formula, lays a foundation for the accurate medium formula for stable fermentation production, and is beneficial to the stability of fermentation production level and the guarantee of fermentation quality.

[0051] (2) The dust generated during the feeding process of the present invention is isolated from the stirring motor of the mixing tank by the negative pressure mixing bin, eliminating the risk of explosion of accumulated corn starch dust caused by accumulation of dust on the motor over time, thereby achieving safe production.

[0052] (3) The present invention solves the problem of large amounts of dust flying due to fermentation ingredients, disorderly dust emission into the atmosphere, wind-blown pollution of the atmosphere, and dust settling causing pollution around the production site; it reduces the unorganized emission of dust by more than 10 tons each year, achieving environmentally friendly and clean production.

[0053] (4) The present invention solves the problem of employees being disturbed by dust during the process of adding fermentation ingredients, thereby ensuring the occupational physical and mental health of employees during the production process. DETAILED DESCRIPTION

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1 Schematic diagram of a preferred fermentation ingredient clean production device of the present invention.

[0056] In the picture:

[0057] 1-Negative pressure batching silo; 2-Batching tank; 3-Induced draft duct; 4-First-stage cyclone separator; 5-First-stage quick-opening aggregate barrel; 6-Feeding port; 7-Second-stage cyclone separator; 8-Second-stage quick-opening aggregate barrel; 9-Induced draft port; 10-Induced draft blower; 11-Motor; 12-Cyclone separation water film dust removal section; 13-Circulating water tank; 15-Circulating water pump; 16-Valve B; 17-Valve C; 18-Inner ring pipe; 19-Water mist interception exhaust pipe; 20-Differential pressure gauge; 21-High-pressure water gun; 22-Culture medium delivery pump; 23-Valve D; 24-Wire mesh water mist interception section; 25-Valve E; 27-Wire mesh interlayer; 28-Tangential water spray outlet of cyclone separation water film dust removal section; 29-Valve F; 30-Dust suction and removal wall. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0060] This embodiment discloses a fermentation ingredient clean production device including a negative pressure ingredient storage bin 1 and an ingredient tank 2. The negative pressure ingredient storage bin 1 is connected to a feeding port 6 of the ingredient tank 2. A recovery device for collecting dust and returning it to the ingredient tank 2 is connected above the feeding port 6.

[0061] As a preferred embodiment, the recovery device includes at least one cyclone separation device and at least one induced draft blower 10, the air inlet of the cyclone separation device is connected to the side wall of the negative pressure batching bin 1 located above the feeding port 6 through the induced draft pipe 3, the air outlet of the cyclone separation device is connected to the air inlet of the induced draft blower 10, the bottom outlet of the cyclone separation device is installed with a collecting bucket, the air outlet of the induced draft blower 10 is tangentially connected to the air inlet of the cyclone separation water film dust removal wire mesh water mist interception system, the bottom outlet of the cyclone separation water film dust removal wire mesh water mist interception system is connected to the batching tank 2 through a pipe, and a circulating water pump 15 is installed on the pipe.

[0062] As a preferred embodiment, the cyclone separation device is composed of a primary cyclone separator 4 and a secondary cyclone separator 7, the primary cyclone separator 4 and the secondary cyclone separator 7 are connected in series, the induced air duct 3 is connected to the air inlet of the primary cyclone separator 4 in a tangential direction, the air outlet of the primary cyclone separator 4 is connected to the air inlet of the secondary cyclone separator 7 in a tangential direction, and the air outlet of the secondary cyclone separator 7 is connected to the air inlet of the induced air blower 10;

[0063] The diameters of the air inlet, air outlet and cylinder of the secondary cyclone separator 7 are smaller than those of the air inlet, air outlet and cylinder of the primary cyclone separator 4 .

[0064] As a preferred embodiment, the inlet and outlet wind speeds of the secondary cyclone separator 7 are greater than the inlet and outlet wind speeds of the primary cyclone separator 4 .

[0065] As a preferred embodiment, a first-stage quick-opening material collection barrel 5 is installed at the bottom of the first-stage cyclone separator 4 , and a second-stage quick-opening material collection barrel 8 is installed at the bottom of the second-stage cyclone separator 7 .

[0066] As a preferred embodiment, the negative pressure batching bin 1, the batching tank 2 and the cyclone separation water film dust removal wire mesh water mist interception system each include at least one.

[0067] As a preferred embodiment, the cyclone separation water film dust removal wire mesh water mist interception system is composed of a circulating water tank 13, a circulating water pump 15, a cyclone separation water film dust removal separation section, a wire mesh water mist interception section 24, and a water mist interception exhaust pipe 19. The cyclone separation water film dust removal separation section includes a cyclone separation water film dust removal section 12 and a cyclone separation water film dust removal section tangential water spray port 28. The circulating water tank 13 is arranged at the bottom of the cyclone separation water film dust removal wire mesh water mist interception system, the top of the circulating water tank 13 is connected to one end of the cyclone separation water film dust removal section 12, the other end of the cyclone separation water film dust removal section 12 is connected to the bottom of the cyclone separation water film dust removal section tangential water spray port 28, and the air inlet of the cyclone separation water film dust removal section 12 is connected to the air outlet of the induced blower 10;

[0068] The diameter of the air inlet and the diameter of the cylinder of the cyclone separation water film dust removal section 12 are smaller than the air outlet and the cylinder of the secondary cyclone separator 7;

[0069] The top of the tangential water spray outlet 28 of the cyclone separation water film dust removal section is connected to the bottom of the wire mesh water mist interception section 24, the top of the wire mesh water mist interception section 24 is connected to the bottom of the water mist interception exhaust pipe 19, and the inlet of the circulating water pump 15 is connected to the side of the circulating water tank 13 through a pipeline.

[0070] As a preferred embodiment, the inner diameter of the wire mesh water mist interception section 24 is larger than the inner diameter of the cyclone separation water film dust removal section 12. The wire mesh water mist interception section 24 is equipped with two or more sets of wire meshes with a thickness of not less than 100 mm. An inner ring tube 18 covered with small holes is installed above each of the two sets of wire meshes. Circulating water is sprayed from the inner ring tube 18 to form water mist that is sprayed and washed down from above the wire meshes.

[0071] The total height of the cyclone separation water film dust removal wire mesh water mist interception system including the water mist interception exhaust pipe 19 is not less than 25m, and the exhaust pipe is equipped with a second-level or higher wire mesh interception droplet device;

[0072] The diameter of the water mist interception exhaust pipe 19 is larger than the diameter of the air inlet pipe of the cyclone separation water film dust removal separation section;

[0073] The cyclone separation water film dust removal separation section has four water spraying outlets at the top of the separation section which are arranged at 90 degrees from the outer ring pipe and spray water in a tangential direction.

[0074] As a preferred embodiment, a 50 mm thick metal mesh partition 27 is provided at every 5 meters in height of the exhaust pipe.

[0075] As a preferred embodiment, the outlet of the circulating water pump 15 is connected to a tee, one outlet of the tee is connected to a valve B16, and the valve B16 is connected to the inner ring pipe 18 through a pipeline.

[0076] As a preferred embodiment, a pipe with a valve F29 is also installed on the side of the cyclone separation water film dust removal and separation section, and the end of the pipe with the valve F29 away from the cyclone separation water film dust removal and separation section is installed on the pipe between the valve B16 and the inner ring pipe 18.

[0077] As a preferred embodiment, the other outlet of the tee is connected to valve C17.

[0078] As a preferred embodiment, the pipe outlet connected to the valve C17 is provided in the batching tank 2 .

[0079] As a preferred embodiment, the circulating water tank 13 is connected to a drinking water pipe, and the drinking water pipe is equipped with a control valve D23.

[0080] As a preferred embodiment, the batching tank 2 is also provided with a drinking water control valve E25, and the negative pressure batching bin 1 is also equipped with a tap water pipe, one of which is connected to a manual high-pressure water gun 21, and the other is connected to the drinking water control valve E25 of the batching tank 2.

[0081] As a preferred embodiment, the batching tank 2 is further provided with a culture medium delivery pump 22 and a culture medium delivery pipeline, and the end of the culture medium delivery pipeline away from the batching tank 2 is installed on the fermentation tank.

[0082] As a preferred embodiment, the recovery device also includes a dust suction wall 30, which is located above the feeding port 6. The dust suction wall 30 is connected to the air inlet of the cyclone separation device through the air duct 3. The dust suction wall 30 faces the top of the feeding port 6 and is inlaid with water pipes on both sides. The water pipes are evenly distributed with atomization ports with adjustable angles, and the water mist from the atomization ports can cover the entire dust suction wall 30.

[0083] As a preferred embodiment, the inner wall of the dust suction and removal wall 30 is provided with an air duct 9, and the air duct 3 located on the air duct 9 extends 100 mm from the inner wall of the dust suction and removal wall 30, and the extended part of the pipe wall is evenly covered with holes with a diameter of 20 mm and a hole spacing of 20 mm; the pipe mouth is sealed with a blind plate with a radius of 500 mm, and the blind plate is evenly covered with holes with a diameter of 15 mm and a hole spacing of 15 mm.

[0084] As a preferred embodiment, a quick-opening washing port is provided on the upper top of the induced air duct 3 , and the other end of the induced air duct 3 is connected to the air inlet of the induced air blower 10 .

[0085] As a preferred embodiment, the dust suction and removal wall 30 is thicker at the top and thinner at the bottom, is wider than the batching tank 2, has a height of not less than 1000 mm, and has a thickness of not less than 200 mm at the thinnest part of the bottom.

[0086] As a preferred embodiment, a quick-opening door is provided on the dust-removing wall 30 on the inner side of the negative pressure batching bin 1 .

[0087] As a preferred embodiment, a sealing tape is used to seal the inner and outer walls of the dust suction and removal wall 30 , and a valve A is installed at each bottom sealing tape at a distance of 100 mm from the inner wall of the batching tank 2 on both sides.

[0088] As a preferred embodiment, an air inlet 9 with a radius of 300 mm is opened at the center of the inner wall of the dust suction and removal wall 30 at the midpoint of the wall.

[0089] As a preferred embodiment, the upper half of the outer wall of the dust suction and removal wall 30 is evenly covered with holes with a diameter of 10 mm and a hole spacing of 10 mm; the lower half is evenly covered with holes with a diameter of 5 mm and a hole spacing of 5 mm.

[0090] As a preferred embodiment, the negative pressure batching bin 1 is further equipped with a differential pressure gauge 20, a main water inlet valve is further installed on the water pipe, and the negative pressure batching bin 1 is further provided with a flow port with adjustable airflow.

[0091] As a preferred embodiment, the feeding port 6 has a lid that can be opened by a hinged link.

[0092] As a preferred embodiment, the motor 11 of the stirring device of the batching tank 2 is arranged on the cover of the batching tank 2 outside the negative pressure batching bin 1, and the stirring shaft of the stirring device extends into the batching tank 2. The stirring shaft has two layers of stirring paddles. The bottom stirring paddle is located at the welding point between the cylinder of the batching tank 2 and the head at the bottom of the batching tank 2, and the upper stirring paddle is located at one-quarter of the height of the cylinder. The stirring paddle is a propeller.

[0093] As a preferred embodiment, one end of the air duct 3 is connected to the dust suction and removal wall 30 at an adjustable angle, the preferred angle being 5-30 degrees. A quick-opening washing port is provided at the upper top of the air duct 3, and the other end of the air duct 3 is connected to the air inlet of the first-stage cyclone separator 4.

[0094] This embodiment also provides a clean production method for fermentation ingredients, including the steps of directional drainage, aggregation, separation and recycling of disorderly floating raw and auxiliary material dust generated during the feeding process of the negative pressure ingredient warehouse 1; dust removal wastewater recovery; and drinking water cleaning ingredient tank 2 and culture medium delivery pipeline.

[0095] Directional drainage, aggregation, separation and recycling of dust: The feeding process is carried out in a negative pressure place of ≥20 Pascal. Since the air suction port formed by the negative pressure is on the inner wall of the dust suction wall 30, a small amount of dust raised during the feeding process is directed to the dust suction wall 30 due to the negative pressure. Since the dust suction wall 30 has a special structure of thick top and thin bottom, when the small amount of dust is directed to the outer wall of the dust suction wall 30 above the feeding port 6, it collides with the water mist sprayed from the top part of the dust suction wall 30 and the water pipe atomization ports embedded on both sides to form granular mist droplets falling, regulating the water The size of the mist is ensured to fall directly into the batching tank 2 during the falling process and to gather and increase, thereby reducing the overflow of dust. Even if a small amount of dust is still sucked into the suction pipe through the dust suction wall 30, the dust will be dampened during the process of passing through the dust suction wall 30, and will collide with each other to form larger particles during the process of moving. When the gas containing the larger particles enters the separation tube of the first-stage cyclone separation device at a speed of more than 20m / s along the axial direction, the airflow is strongly rotated by the guide blade of the first-stage cyclone separation device, and the airflow spirals downward along the cylinder. When entering the cyclone cylinder, the dense damp particles and dust are thrown to the wall of the device under the action of centrifugal force, and fall along the cylinder wall into the first-stage quick-opening collection barrel 5 under the action of gravity; the rotating air flow contracts in the cylinder and flows toward the center, forming a secondary vortex upward and flows out through the air outlet pipe on the top of the first-stage cyclone separation device; the air flowing out of the pipe carries a very small amount of residual damp fine particles and dust and enters the air inlet of the second-stage cyclone separation device in a tangential direction at a speed of more than 22m / s; since the diameter of the air inlet and outlet pipes of the second-stage cyclone separation device is larger than that of the first-stage cyclone separation device, the air inlet and outlet pipes of the second-stage cyclone separation device are larger than those of the first-stage cyclone separation device. The smaller the volume, the faster the air in and out is, and under the condition of constant flow, the airflow is guided by the guide vanes of the secondary cyclone separator, causing the airflow to rotate more strongly. The airflow spirals downward along the cylinder into the cyclone cylinder, and the damp particles and dust particles of the same density will generate a greater centrifugal force. The damp particles and dust particles of slightly smaller density escaping from the primary cyclone separator will also be thrown to the wall of the secondary cyclone separator under the action of a centrifugal force far exceeding that of the primary cyclone separator, collide and gather, and fall along the cylinder wall into the secondary quick-opening collection barrel 8 under the action of gravity.If there is still a very small amount of damp fine dust entering the cyclone separation water film dust removal wire mesh water mist interception system at a speed of more than 25m / s from the air outlet of the secondary cyclone separation device, since the diameter of the cyclone separation water film dust removal section 12 and the cylinder of the cyclone separation water film dust removal wire mesh water mist interception system are smaller than the air outlet and the cylinder of the secondary cyclone separation device, the damp fine dust enters the cyclone separation water film dust removal section 12 at a faster speed and is thrown to the inner wall of the cylinder for collision and aggregation under the action of centrifugal force again, and is at the same time sprayed by four nozzles on the outer ring tube on the upper part of the cylinder at an angle of 90 degrees to each other and in a tangential direction to the cylinder. The water film formed by the nozzle sprays downward adheres to it, flows down along the wall of the cylinder, and falls into the water in the circulating water tank 13. The rotating airflow flows toward the center into the ascending pipe and enters the wire mesh water mist interception section 24 upward. The diameter of the wire mesh water mist interception section 24 is much larger than the diameter of the ascending pipe. The speed of the rotating upward airflow drops sharply, and the droplets carrying extremely fine dust further collide and gather, and the water film formed by the descending water mist falls into the water tank; the upward airflow with a sudden drop in airflow speed passes through the wire mesh filled with water mist, then passes through the water mist spray, then passes through the wire mesh filled with water mist, and finally passes through the two wire mesh water mist interception processes of the water mist spray, realizing the upward airflow and the downward airflow. The air and liquid between the mist liquid and the liquid-filled wire mesh are fully contacted, mixed, and exchanged. The upward airflow is constantly in contact and exchanged with the downward water mist and water film. Extremely small particle droplets are constantly and fully leached, gathered into large droplets or water film flows and fall into the water tank at the bottom; the cyclone separation water film dust removal wire mesh water mist interception system, including the exhaust pipe, is ≥25 meters high. The diameter of the exhaust pipe is larger than the diameter of the air inlet of the cyclone separation water film dust removal section 12. There is a 50mm thick metal wire mesh partition 27 every 5 meters. The exhaust flow rate of the exhaust pipe is slower than the inlet flow rate of the cyclone separation water film dust removal section 12, and the water vapor is slowly discharged. The fine water mist suspended in the air is more easily adsorbed and condensed upon encountering the screen. Once the mist continues to condense to a certain size, it falls downward due to gravity into the circulating water tank 13 at the bottom of the cyclone separation water film dust removal screen water mist interception system. After the two-stage speed-increasing cyclone separation of damp particles and the subsequent speed-reducing interception by the cyclone separation water film dust removal screen water mist interception system, the exhaust gas discharged from the exhaust pipe outlet is essentially free of solids. The exhaust gas was sampled and tested for organized exhaust gas according to the national "HJ836-2017 Gravimetric Method for the Determination of Low-Concentration Particulate Matter in Exhaust Gases from Stationary Pollution Sources," and no low-concentration particulate matter was detected.

[0096] After the feeding is completed, turn off the atomized water of the dust removal wall 30, adjust and increase the negative pressure of the negative pressure batching bin 1 to a negative pressure gauge ≥ 25 Pascal, continue to operate at negative pressure for more than 10 minutes, and suck the trace amount of damp dust remaining on the inner wall of the pipeline into the quick-opening aggregate barrels of the first-level cyclone separation device and the second-level cyclone separation device and the circulating water tank 13, and turn off the blower 10; close the quick-opening aggregate barrel butterfly valve, remove the quick-opening aggregate barrel, and pour the damp dust that falls into the first-level quick-opening aggregate barrel 5 at the bottom of the first-level cyclone separation device and the second-level quick-opening aggregate barrel 8 at the bottom of the second-level cyclone separation device into the batching tank 2. At the same time, wash the first-level aggregate barrel and the second-level aggregate barrel with water, and add the washing water into the batching tank 2 and stir evenly, and then pump it into the fermentation tank through the culture medium delivery pump 22 and the pipeline.

[0097] Dust removal wastewater recovery:

[0098] Water recovery in the circulating water tank 13: After the prepared culture medium in the batching tank 2 is measured and transported to the fermentation tank through the feeding pump, the water in the circulating water tank 13 of the cyclone separation water film dust removal wire mesh water mist interception system is pumped back to the batching tank 2 by the circulating water pump 15: turn off the induced blower 10, open the valve C17, close the valve B16, switch the circulating water pump 15 to discharge water, and pump the water in the circulating water tank 13 into the batching tank 2, and turn off the circulating water pump 15.

[0099] Recovery of washing water: Open the high-pressure water gun 21 connected to the tap water to spray the dust suction wall 30, and at the same time use the quick-opening washing port of the induced draft duct 3 outside the negative pressure batching bin 1 to spray the inner wall of the induced draft duct 3, and flush the dust and liquid droplets adhering to the inner and outer walls of the dust suction wall 30 and the inner wall of the induced draft duct 3 into the batching tank 2. At the same time, open the two valves at the bottom of the dust suction wall 30 to allow the liquid with residual dust in the interlayer of the dust suction wall 30 to flow into the batching tank 2 until the outflowing liquid is cleaned and becomes clear. Measure the volume and pump it into the fermentation tank through the culture medium delivery pump 22 and the pipeline.

[0100] Drinking water cleaning batching tank 2 and culture medium delivery pipeline: switch the circulating water pump 15 outlet valve C17 to close, valve B16 to open, valve F29 to open; open the drinking water inlet valve D23 of the circulating water tank 13, add a certain amount of drinking water, close the drinking water inlet valve D23, start the circulating water pump 15, spray and clean the metal screen of the cyclone separation water film dust removal wire mesh water mist interception system for more than 15 minutes, wash the remaining dust droplets into the circulating water tank 13, and pump the water from the circulating water tank 13 into the batching tank 2 again through the valve switch. The water in the material tank 2 is measured and then pumped into the fermentation tank. After being rinsed by the equipment more than twice in small amounts, the washing water is pumped into the material tank 2, and then the water in the material tank 2 is pumped into the fermentation tank, so that the culture medium delivery pipeline from the material tank 2 to the fermentation tank is cleaned, and there is no residual culture medium, so that the error of the culture medium formula is minimized; the volume of the ingredients in the fermentation tank is measured, and according to the difference between the measured volume in the fermentation tank and the volume required for the ingredients, the drinking water valve E25 is opened to supplement the required volume into the material tank 2, and the culture medium delivery pump 22 is opened to pump the supplemented drinking water into the fermentation tank.

[0101] The feeding is carried out in the negative pressure batching bin 1. During the operation, the dust can be controlled to move toward the dust suction wall 30 with atomized water spray without flying around. Most of the dust is wetted and gathered and falls into the batching tank 2.

[0102] The very small amount of dust that passes through the dust suction wall 30 and the accumulated damp dust are separated by a two-stage speed-increasing cyclone and then decelerated by a cyclone water foam dust removal wire mesh water mist interception system to intercept solids and droplets.

[0103] The drinking water used to moisten and intercept the floating dust generated by feeding, as well as the drinking water used to wash the equipment, is all recycled, which not only saves raw and auxiliary materials but also saves water resources. More importantly, it ensures the stability of the fermentation formula process.

[0104] The culture medium delivery pipeline is flushed with cleaner liquid multiple times, which ensures the cleanliness of the delivery pipeline without self-fermentation, which is conducive to the stability of the fermentation level.

[0105] The fermentation ingredient clean production device and method of this embodiment are applied to the production process of the fermentation ingredients of Zhongshengmycin, so that dust can be collected in an orderly manner and fully recycled, and the environmental pollution caused by the unorganized emission of dust is eliminated, and clean production is achieved; the risk of flash explosion caused by the accumulation of a large amount of dust in the stirring motor 11 of the ingredient tank 2 is greatly reduced; the labor health and working environment of the employees are greatly improved; at the same time, the fluctuation range of the Zhongshengmycin fermentation production level is stabilized from the original range of ±20% or even higher to within the fluctuation range of 10%; and good economic and social benefits are achieved.

[0106] The beneficial effects of the technical solution of this embodiment will be further illustrated below through several groups of examples.

[0107] Example 1:

[0108] Fermentation medium negative pressure ingredients:

[0109] 1. Close the doors and windows of the negative pressure batching bin 1;

[0110] 2. Open the drinking water valve D23 and add water within 25% of the volume of the ingredients into the circulating water tank 13 of the cyclone separation water film dust removal wire mesh water mist interception system;

[0111] 3. Open the drinking water valve E, add water to the batching tank 2 until it is within 25% of the volume of the fermentation tank, and start the stirring motor 11 of the batching tank 2;

[0112] 4. Open the main water inlet valve of the atomization port of the dust removal wall 30 above the batching tank 2 and adjust it until the sprayed water is in the form of fine mist;

[0113] 5. Turn on the induced draft blower 10, adjust the frequency converter of the induced draft blower 10 motor 11, and adjust the size of the air flow opening of the negative pressure batching bin 1 so that the pressure difference indication value of the differential pressure gauge 20 of the negative pressure batching bin 1 is ≥20 Pascals. Adjust the minimum air flow velocity of the inlet of the first-stage cyclone separator 4 to ≥20 m / s, and adjust the water mist of the dust suction wall 30 in the negative pressure batching bin 1 to flow in one direction of the dust suction wall 30;

[0114] 6. Open valve B16 and valve F29, close valve C17, and start the circulating water pump 15. This allows the water in the circulating water tank 13 to be delivered through the pipeline by the circulating water pump 15 to the inner ring pipe 18 of the wire mesh water mist interception section 24 of the cyclone separation water film dust removal wire mesh water mist interception system. The inner ring pipe 18 sprays water mist, which evenly falls on the wire mesh and flows back through the inner wall of the cyclone separation water film dust removal section 12 into the circulating water tank 13.

[0115] 7. Add soybean cake powder, corn flour, glucose, peptone, yeast powder, inorganic salts and other raw and auxiliary materials in order according to the quantity of each raw and auxiliary material in the fermentation medium formula and stir evenly;

[0116] 8. Turn on the fermentation medium delivery pump 22 of the batching tank 2 to deliver the evenly mixed fermentation medium into the fermentation tank.

[0117] Example 2:

[0118] Recovery of disorderly floating raw and auxiliary material dust from culture medium:

[0119] 1. Turn off the batching and stirring motor 11, turn off the induced draft fan 10, set the pressure difference indication value of the pressure differential gauge 20 of the negative pressure batching bin 1 to 0 Pascal, close the main water inlet valve of the atomization port of the dust removal wall 30, and turn off the circulating water pump 15;

[0120] 2. Remove the first-stage quick-opening collecting barrel 5 of the first-stage cyclone separator 4, and remove the second-stage quick-opening collecting barrel 8 of the second-stage cyclone separator 7;

[0121] 3. Bring the first-level quick-opening aggregate barrel 5 and the second-level quick-opening aggregate barrel 8 back into the negative pressure batching bin 1;

[0122] 4. Remove the manual high-pressure water gun 21 in the negative pressure batching bin 1, open the high-pressure water gun 21 to clean the first-level quick-opening aggregate barrel 5 and the second-level quick-opening aggregate barrel 8, and pour the water in the aggregate barrel into the batching tank 2 after cleaning; install the first-level quick-opening aggregate barrel 5 and the second-level quick-opening aggregate barrel 8 back on the first-level cyclone separator 4 and the second-level cyclone separator 7 respectively;

[0123] 5. Use a high-pressure water gun 21 to clean the dust suction wall 30 above the batching tank 2. At the same time, clean the inner wall of the induced air duct 3 from the quick-open cleaning port on the upper top of the induced air duct 3, and flush the moist dust particles adhering to the dust suction wall 30 and the inner wall of the induced air duct 3 into the batching tank 2.

[0124] 6. Open the two drain valves at the bottom of the dust suction wall 30 and the quick-opening door of the dust suction wall 30 at the same time. Use a high-pressure water gun 21 to clean the inner cavity of the dust suction wall 30 and the protruding part of the air duct 3. The washing water flows into the batching tank 2.

[0125] 7. Close valve B16, open valve C17, start the circulating water pump 15, and pump the washing water in the circulating water tank 13 of the cyclone separation water film dust removal screen water mist interception system into the batching tank 2;

[0126] 8. Turn on the stirring device and use the high-pressure water gun 21 to clean the inner wall and the stirring shaft of the batching tank 2. Turn on the culture medium delivery pump 22 to pump the washing water in the batching tank 2 into the fermentation tank, and measure the volume of the ingredients in the fermentation tank.

[0127] Example 3:

[0128] Wastewater recycling:

[0129] 1. Close valve C17, open valve B16, open drinking water valve D23, and put drinking water into the circulating water tank 13 of the cyclone separation water film dust removal wire mesh water mist interception system, and control the water volume to be less than 20% of the volume of the culture medium ingredients;

[0130] 2. Close the quick-opening door of the dust suction wall 30, close the quick-opening washing port of the induced draft pipe 3, start the circulating water pump 15, and circulate and flush the screen water mist interception section 24 in the cyclone separation water film dust removal screen water mist interception system for more than 5 minutes;

[0131] 3. At the same time, close the doors and windows of the batching bin, turn on the induced draft blower 10, and adjust the airflow so that the pressure difference indication value of the pressure differential gauge 20 of the negative pressure batching bin 1 is ≥20 Pascals, and maintain the induced draft for more than 20 minutes;

[0132] 4. Turn off the induced draft fan 10, and the pressure difference indication value of the pressure differential gauge 20 of the negative pressure batching bin 1 is 0;

[0133] 5. Close valve B16 and open valve C17. The water in the circulating water tank 13 of the cyclone separation water film dust removal screen water mist interception system is pumped into the batching tank 2 through the circulating water pump 15. Then, close the circulating water pump 15.

[0134] 6. Remove the first-level aggregate barrel and the second-level aggregate barrel, move the aggregate barrel to the negative pressure batching bin 1, pour the water in the aggregate barrel into the batching tank 2, clean the aggregate barrel again, and pour the washing water into the batching tank 2;

[0135] 7. Turn on the agitator of the batching tank 2, use the high-pressure water gun 21 to clean the inner wall and the stirring shaft of the batching tank 2 again, turn on the culture medium delivery pump 22, and pump the washing water of the batching tank 2 into the fermentation tank, while measuring the volume of the ingredients in the fermentation tank;

[0136] 8. According to the difference between the measured volume in the fermentation tank and the volume required by the ingredients, open the drinking water valve E to add the required volume to the ingredient tank 2, and start the culture medium delivery pump 22 to pump the added drinking water into the fermentation tank.

[0137] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fermentation ingredient clean production device, characterized in that: It includes a negative pressure batching bin and a batching tank, wherein the negative pressure batching bin is connected to a feeding port of the batching tank, and a recovery device for collecting dust and returning it to the batching tank is connected above the feeding port; The recovery device includes at least one cyclone separation device and at least one induced blower, the air inlet of the cyclone separation device is connected to the side wall of the negative pressure batching bin above the feeding port through an induced air pipe, the air outlet of the cyclone separation device is connected to the air inlet of the induced air blower, the bottom outlet of the cyclone separation device is installed with a collecting bucket, the air outlet of the induced air blower is tangentially connected to the air inlet of the cyclone separation water film dust removal wire mesh water mist interception system, the bottom outlet of the cyclone separation water film dust removal wire mesh water mist interception system is connected to the batching tank through a pipeline, and a circulating water pump is installed on the pipeline; The cyclone separation water film dust removal wire mesh water mist interception system consists of a circulating water tank, a circulating water pump, a cyclone separation water film dust removal separation section, a wire mesh water mist interception section, and a water mist interception exhaust pipe. The cyclone separation water film dust removal separation section includes a cyclone separation water film dust removal section and a cyclone separation water film dust removal section tangential water spray port; The recovery device also includes a dust suction wall, which is connected to the air inlet of the cyclone separation device through an air duct, and the top and two sides of the dust suction wall facing the feeding port are inlaid with water pipes, and the water pipes are evenly distributed with atomization ports with adjustable angles; The inner wall of the dust suction and removal wall is provided with an air inlet, and the air inlet pipe is located on the air inlet and extends out of the inner wall of the dust suction and removal wall; the air inlet is located at the center position on the wall at the midpoint of the inner wall of the dust suction and removal wall; The dust suction and removal wall is thick at the top and thin at the bottom, wider than the batching tank, not less than 1000 mm in height, and not less than 200 mm in thickness at the thinnest part of the bottom; the upper half of the outer wall of the dust suction and removal wall is evenly covered with holes with a diameter of 10 mm and a hole spacing of 10 mm; the lower half is evenly covered with holes with a diameter of 5 mm and a hole spacing of 5 mm.

2. A fermentation ingredient clean production device according to claim 1, characterized in that: The cyclone separator is composed of a primary cyclone separator and a secondary cyclone separator, the primary cyclone separator and the secondary cyclone separator are connected in series, the induced air duct is connected to the air inlet of the primary cyclone separator in a tangential direction, the air outlet of the primary cyclone separator is connected to the air inlet of the secondary cyclone separator in a tangential direction, and the air outlet of the secondary cyclone separator is connected to the air inlet of the induced air blower; The diameters of the air inlet, air outlet and cylinder of the secondary cyclone separator are smaller than those of the primary cyclone separator.

3. A fermentation ingredient clean production device according to claim 2, characterized in that: The inlet and outlet wind speeds of the secondary cyclone separator are greater than the inlet and outlet wind speeds of the primary cyclone separator.

4. A fermentation ingredient clean production device according to claim 3, characterized in that: The diameter of the air inlet and the cylinder of the cyclone separation water film dust removal section are smaller than the air outlet and cylinder of the secondary cyclone separator; The wire mesh water mist interception section has two or more sets of wire meshes, and the circulating water is sprayed and washed downward from above the wire meshes in the form of water mist. The inner diameter of the wire mesh water mist interception section is larger than the inner diameter of the cyclone separation water film dust removal section; The water mist interception exhaust pipe is provided with a second-level or higher wire mesh interception droplet device, and the diameter of the water mist interception exhaust pipe is larger than the diameter of the air inlet pipe of the cyclone separation water film dust removal separation section; The cyclone separation water film dust removal separation section has four water spraying outlets at the top of the separation section which are arranged at 90 degrees from the outer ring pipe and spray water in a tangential direction.

5. A clean production method for fermentation ingredients, characterized in that: The fermentation ingredient clean production device according to any one of claims 1 to 4 is used, including the directional drainage and recycling of disorderly floating raw and auxiliary material dust generated during the feeding process of the negative pressure ingredient bin, and the recycling of washing water of the ingredient clean production device.

6. A method for clean production of fermentation ingredients according to claim 5, characterized in that: The directional drainage and recycling of the disorderly floating dust of raw and auxiliary materials generated during the feeding process of the negative pressure batching bin refers to the process of draining the disorderly floating dust generated during the batching process of the negative pressure batching bin in one direction toward the dust suction wall, and passing through the wet interception of the dust suction wall, two-stage speed-increasing cyclone separation plus cyclone separation water film dust removal, wire mesh water mist deceleration droplet interception, and exhaust pipe water mist interception to intercept the directionally floating dust solids and dust droplets and recover them to the batching tank for batching.

7. The clean production method of fermentation ingredients according to claim 5, characterized in that: The recycling of washing water in the cleaning ingredient production facility means that all raw and auxiliary materials are first prepared into a relatively thick culture medium with drinking water within 25% of the volume required for the culture medium, and the culture medium is transported to the fermentation tank through a pipeline; The raw and auxiliary materials that are directional and adhere to the dust suction wall, the inner wall of the batching tank, and fall into the collecting barrel of the cyclone separation group are washed into the batching tank, and the washing water intercepted and dripped into the circulating water tank is returned to the batching tank, mixed evenly, and transported to the fermentation tank through the pipeline; The entire system is washed and cleaned with drinking water, and the washing water is recovered into the batching tank and transported to the fermentation tank through a pipeline; finally, the required volume of the ingredients is supplemented with drinking water, the pipeline is cleaned and the ingredients are transported to the fermentation tank; the above-mentioned multiple preparations and delivery of the feed liquid and the reduction of the solid content concentration of the feed liquid are adopted and the feed liquid is transported to the fermentation tank through the batching pipeline, so that the feed liquid delivery pipeline does not retain a high content of raw and auxiliary material liquid, thereby realizing the recycling of the loose raw and auxiliary materials and equipment washing water.

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