Centrifugal concentration device for biopesticide production

Abstract

The utility model relates to the field of biopesticide production, and discloses a centrifugal concentration device for biopesticide production, which comprises an outer cylinder body, the top of the outer cylinder body is of an opening structure, support legs are fixedly mounted at the bottom of the outer cylinder body, a cylinder cover is fixedly mounted at the top of the outer cylinder body through bolts, and a support component is arranged in the outer cylinder body. A centrifugal barrel is arranged on the supporting assembly, the top of the centrifugal barrel is of an opening structure, a feeding pipe is fixedly installed at the top of the barrel cover, the bottom end of the feeding pipe penetrates through the barrel cover and extends into the centrifugal barrel, a first end cover is installed at the top end of the feeding pipe in a threaded mode, and a discharging pipe is fixedly installed in the center of the bottom of the centrifugal barrel. A round hole is formed in the inner wall of the bottom of the outer barrel, and the bottom end of the discharging pipe penetrates through the round hole and is provided with a second end cover in a threaded mode. The centrifugal concentration device has the advantages and effects that the pressure value in the outer barrel can be automatically maintained to be constant, and the centrifugal concentration quality of a biopesticide solution is improved.

Description

Technical Field

[0001] This utility model relates to the field of biopesticide production technology, and in particular to a centrifugal concentration device for biopesticide production. Background Technology

[0002] Biopesticides are pesticide formulations that utilize living organisms or their metabolic products to control pests, pathogens, weeds, nematodes, rodents, and other harmful organisms. They are also pesticide formulations synthesized through biomimicry to achieve specific effects. Biopesticides primarily utilize the insecticidal, disease-preventing, and growth-promoting functions of certain special microorganisms or their metabolic products. Their effective active ingredients are entirely present and derived from the natural ecosystem. Their most significant characteristic is that they are easily decomposed by sunlight, plants, or various soil microorganisms, representing a natural and natural material cycle. Furthermore, biopesticides have advantages such as high selectivity, safety for humans and animals, and minimal impact on the ecological environment, gradually replacing chemical pesticides. In the production of biopesticides, centrifugal concentration of the solution is essential. This requires the use of centrifugal concentration equipment. Centrifugal concentration is a concentration method that uses the centrifugal force generated by rotation under negative pressure to separate the solvent and solute in the solution.

[0003] A search revealed a patent document with authorization announcement number CN209108753U, which discloses a centrifugal concentration device for biopesticide production that facilitates the removal of impurities. The device includes a housing, a motor fixedly connected to the bottom of the housing, a rotating shaft fixedly connected to the output end of the motor extending into the interior of the housing, a baffle fixedly connected laterally inside the housing, and a centrifuge drum fixedly connected to the top of the rotating shaft extending into the top of the baffle. This invention, through the coordinated use of a housing, motor, rotating shaft, baffle, centrifuge drum, flow guide hood, feed inlet, filter cylinder, baffle, placement groove, first trapezoidal block, second trapezoidal block, locking rod, spring, vertical rod, movable groove, movable block, pressing plate, discharge pipe, and control valve, solves the problem that existing centrifugal concentration devices cannot effectively remove impurities filtered from raw materials, thus affecting the quality of biopesticides. This centrifugal concentration device for biopesticide production, which facilitates the removal of impurities, has the advantage of easy cleaning, improves the practicality of the centrifugal concentration device, and is convenient for users.

[0004] The existing solutions have been found to have at least the following shortcomings in practical use: During the centrifugal concentration process of biopesticide production, the solvent in the biopesticide solution is continuously evaporated under negative pressure, making it difficult to maintain a constant pressure in the centrifugal concentration processing space inside the device. This results in fluctuating pressure, leading to a deterioration in the quality of the centrifugal concentration of the biopesticide solution. Therefore, we propose a centrifugal concentration device for biopesticide production to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a centrifugal concentration device for the production of biological pesticides, which can automatically maintain a constant pressure value inside the outer cylinder and improve the quality of centrifugal concentration of biological pesticide solutions.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a centrifugal concentration device for the production of biological pesticides, comprising an outer cylinder, the top of which is open, a support leg fixedly installed at the bottom of which, a cylinder cover fixedly installed at the top of which is bolted, a support assembly inside which a centrifuge tank is mounted, the top of which is open, a feed pipe fixedly installed at the top of the cylinder cover, the bottom end of which penetrates the cylinder cover and extends into the centrifuge tank, and a first end cap threadedly installed at the top of the feed pipe. A discharge pipe is fixedly installed at the bottom center of the outer cylinder. A round hole is opened on the bottom inner wall of the outer cylinder. The bottom end of the discharge pipe passes through the round hole and is threaded with a second end cap. The discharge pipe is rotatably connected to the round hole through a bearing. A mounting base is fixedly installed at the bottom center of the cylinder cover. An electric heating rod is fixedly installed at the bottom of the mounting base. The bottom end of the electric heating rod passes through the centrifuge and extends into the discharge pipe. An air extraction component is set on the left side of the outer cylinder. A drive component is set at the bottom of the outer cylinder. A steam discharge pipe is fixedly installed at the top right side of the outer cylinder. A constant pressure component is set at the right end of the steam discharge pipe.

[0007] A further feature of this invention is that the support assembly includes a bearing ring, a connecting ring, and a guide ring. The bearing ring is fixedly installed on the inner wall of the outer cylinder, and the bottom of the centrifuge barrel passes through the bearing ring. The connecting ring is fixedly sleeved on the outer wall of the centrifuge barrel, and the bottom of the connecting ring slides in contact with the top of the bearing ring. The guide ring is fixedly installed on the bottom of the connecting ring, and an annular guide groove is provided on the top of the bearing ring. The guide ring slides in the annular guide groove.

[0008] A further feature of this invention is that the top of the bearing ring and the bottom of the connecting ring are both smooth planes.

[0009] A further feature of this invention is that the air extraction assembly includes an air extraction pump, an air extraction pipe, and a gas one-way valve. The air extraction pump is fixedly installed on the left outer wall of the outer cylinder. One end of the air extraction pipe is fixedly connected to the suction end of the air extraction pump. The end of the air extraction pipe away from the air extraction pump extends into the outer cylinder and is located above the support assembly. The gas one-way valve is fixedly installed on the air extraction pipe. A pressure gauge is fixedly installed on the left side of the outer cylinder.

[0010] A further feature of this invention is that the driving assembly includes an outer gear ring, an L-shaped plate, a motor, and a gear. The outer gear ring is fixedly sleeved on the outer wall of the discharge pipe and located below the outer cylinder. The L-shaped plate is fixedly installed at the bottom of the outer cylinder. The motor is fixedly installed on the L-shaped plate. The gear is fixedly installed at the output shaft end of the motor and meshes with the outer gear ring.

[0011] A further feature of this invention is that the constant pressure assembly includes a constant pressure regulating cylinder, a piston rod, a steam delivery pipe, and an electromagnetic one-way valve. The constant pressure regulating cylinder is fixedly installed at the right end of the steam discharge pipe, and the right end of the steam discharge pipe extends into the constant pressure regulating cylinder. The piston rod is located inside the constant pressure regulating cylinder, and the outer wall of the piston rod is in sliding sealing contact with the inner wall of the constant pressure regulating cylinder. A vent hole is provided on the right side wall of the constant pressure regulating cylinder. The steam delivery pipe is fixedly installed at the top of the constant pressure regulating cylinder and located to the left of the piston rod. The steam delivery pipe is connected to the inside of the constant pressure regulating cylinder. The electromagnetic one-way valve is fixedly installed on the steam delivery pipe.

[0012] A further feature of this invention is that a horizontal guide rod is fixedly installed on the inner right side of the constant pressure regulating cylinder, a horizontal guide groove is provided at the right end of the piston column, and the left end of the horizontal guide rod is slidably installed in the horizontal guide groove.

[0013] A further feature of this invention is that the diameter of the piston rod is larger than the outer diameter of the steam discharge pipe.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model utilizes a support assembly consisting of a bearing ring, a connecting ring, and a guide ring to stably support the centrifuge tank within the outer cylinder.

[0016] 2. This utility model utilizes a combination of an air pump, an air extraction pipe, and a gas check valve to extract air from the inside of the outer cylinder, thereby creating negative pressure inside the outer cylinder.

[0017] 3. This utility model utilizes an electric heating rod to comprehensively and evenly heat the biological pesticide solution inside the centrifuge tank and the discharge pipe.

[0018] 4. This utility model utilizes a drive assembly consisting of an external gear ring, an L-shaped plate, a motor, and gears to control the rotation of the discharge pipe and the centrifuge drum.

[0019] 5. This utility model, through the combined use of the air extraction component, the electric heating rod, and the drive component, can achieve the purpose of centrifugal concentration of biological pesticides.

[0020] 6. This utility model utilizes a constant pressure assembly consisting of a constant pressure regulating cylinder, a piston column, a steam conveying pipe, and an electromagnetic one-way valve. During the centrifugal concentration of biological pesticide solutions, the pressure difference between the left and right sides of the piston column allows for automatic horizontal movement of the piston column. This, in turn, controls the sealing and unsealing of the right end of the steam discharge pipe, ensuring that the steam generated inside the outer cylinder is discharged as needed. This achieves the effect of automatically maintaining a constant pressure value inside the outer cylinder, thereby improving the quality of centrifugal concentration of biological pesticide solutions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0022] Figure 2 This is a schematic diagram of the front cross-sectional structure of this embodiment.

[0023] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0024] Figure 4 This is an exploded structural diagram of the supporting components.

[0025] Figure 5 yes Figure 2 A magnified structural diagram of part B.

[0026] In the diagram, 1. Outer cylinder; 2. Support leg; 3. Cylinder cover; 4. Centrifuge tank; 5. Feed pipe; 6. First end cover; 7. Discharge pipe; 8. Second end cover; 9. Air pump; 10. Air extraction pipe; 11. Gas check valve; 12. Pressure gauge; 13. External gear ring; 14. L-shaped plate; 15. Motor; 16. Gear; 17. Steam exhaust pipe; 18. Constant pressure regulating cylinder; 19. Piston column; 20. Vent hole; 21. Steam delivery pipe; 22. Electromagnetic check valve; 23. Horizontal guide rod; 24. Mounting base; 25. Electric heating rod; 26. Bearing ring; 27. Connecting ring; 28. Guide ring; 29. ​​Annular guide groove. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a centrifugal concentration device for the production of biological pesticides, including an outer cylinder 1 with an open top. A support leg 2 is fixedly installed at the bottom of the outer cylinder 1. A cylinder cover 3 is bolted to the top of the outer cylinder 1 to seal the opening at the top. The cylinder cover 3 is fixed by bolt assembly for easy disassembly and cleaning of the interior of the outer cylinder 1. A support assembly is provided inside the outer cylinder 1, and a centrifuge tank 4 is mounted on the support assembly. The centrifuge tank 4 has an open top and is used to store the biological pesticide solution. The support assembly includes a bearing ring 26, a connecting ring 27, and a guide ring 28. The bearing ring 26 is fixedly installed on the inner wall of the outer cylinder 1, and the bottom of the centrifuge tank 4 passes through the bearing ring 26. The connecting ring 27 is fixedly sleeved on the outer wall of the centrifuge tank 4, with the bottom of the connecting ring 27 slidingly contacting the top of the bearing ring 26. A guide ring 28 is fixedly installed at the bottom of the connecting ring 27. An annular guide groove 29 is provided at the top of the bearing ring 26. The guide ring 28 is slidably installed within the annular guide groove 29. When the centrifuge tank 4 drives the connecting ring 27 and the guide ring 28 to rotate, the bearing ring 26 can stably support and support the connecting ring 27 and the centrifuge tank 4. The sliding of the guide ring 28 within the annular guide groove 29 allows the centrifuge tank 4 and the connecting ring 27 to rotate stably, thus ensuring that the centrifuge tank 4 rotates smoothly and steadily inside the outer cylinder 1. A feed pipe 5 is fixedly installed at the top of the cylinder cover 3. The bottom end of the feed pipe 5 passes through the cylinder cover 3 and extends into the centrifuge tank 4. A first end cap 6 is threaded onto the top of the feed pipe 5. A discharge pipe 7 is fixedly installed at the center of the bottom of the centrifuge tank 4. A round hole is provided on the inner wall of the bottom of the outer cylinder 1. The bottom end of the discharge pipe 7 passes through the round hole and is threaded onto a second end cap 8. The discharge pipe 7 is rotatably connected to the round hole via a bearing.

[0029] A mounting base 24 is fixedly installed at the bottom center of the cylinder cover 3. An electric heating rod 25 is fixedly installed at the bottom of the mounting base 24. The bottom end of the electric heating rod 25 penetrates the centrifuge tank 4 and extends into the discharge pipe 7. The electric heating rod 25 can be used to heat the biological pesticide solution inside the centrifuge tank 4 and the discharge pipe 7 evenly. It should be noted that the electric heating rod 25 is a constant temperature electric heating rod, and the heating temperature of the electric heating rod 25 is selected according to the concentration temperature required for the biological pesticide solution. An air extraction assembly is provided on the left side of the outer cylinder 1. The air extraction assembly includes an air pump 9, an air extraction pipe 10, and a gas one-way valve 11. The air pump 9 is fixedly installed on the left outer wall of the outer cylinder 1. One end of the air extraction pipe 10 is fixedly connected to the suction end of the air pump 9. The end of the tube 10, furthest from the air pump 9, extends into the outer cylinder 1 and is located above the support assembly. A one-way gas valve 11 is fixedly installed on the air extraction pipe 10. A pressure gauge 12 is fixedly installed on the left side of the outer cylinder 1. The air pump 9 and air extraction pipe 10 are used to extract air from the outer cylinder 1, creating a negative pressure inside. The one-way gas valve 11 controls the unidirectional flow of air within the air extraction pipe 10, and the pressure gauge 12 displays the negative pressure value inside the outer cylinder 1. A drive assembly is located at the bottom of the outer cylinder 1. This drive assembly includes an external gear ring 13, an L-shaped plate 14, a motor 15, and a gear 16. The external gear ring 13 is fixedly sleeved on the outer wall of the discharge pipe 7 and located below the outer cylinder 1. The L-shaped plate 14 is fixedly installed at the bottom of the outer cylinder 1. The motor... Motor 15 is fixedly installed on L-shaped plate 14. Gear 16 is fixedly installed on the output shaft end of motor 15. Gear 16 meshes with external gear ring 13. Motor 15 is used to control the rotation of gear 16. By utilizing the meshing transmission action of gear 16 and external gear ring 13, the rotation of discharge pipe 7 and centrifuge tank 4 can be controlled, thereby centrifuging and concentrating the biological pesticide solution in centrifuge tank 4. A steam discharge pipe 17 is fixedly installed on the top right side of outer cylinder 1. A constant pressure assembly is provided at the right end of steam discharge pipe 17. The constant pressure assembly includes constant pressure regulating cylinder 18, piston column 19, steam conveying pipe 21, and electromagnetic one-way valve 22. Constant pressure regulating cylinder 18 is fixedly installed at the right end of steam discharge pipe 17. The right end of steam discharge pipe 17 extends into constant pressure regulating cylinder 18. Piston 19 is located inside constant pressure regulating cylinder 18. The outer wall of piston 19 is in sliding sealing contact with the inner wall of constant pressure regulating cylinder 18. A vent hole 20 is provided on the right side wall of constant pressure regulating cylinder 18. Steam delivery pipe 21 is fixedly installed at the top of constant pressure regulating cylinder 18 and located to the left of piston 19. Steam delivery pipe 21 is connected to the inside of constant pressure regulating cylinder 18. Electromagnetic one-way valve 22 is fixedly installed on steam delivery pipe 21. The pressure difference between the space on the left and right sides of piston 19 can be used to control the automatic horizontal movement of piston 19, thereby controlling the sealing and unsealing of the right end of steam discharge pipe 17. This allows the steam generated inside outer cylinder 1 to be discharged as needed, thus maintaining a constant pressure value inside outer cylinder 1.To improve the quality of centrifugal concentration of biological pesticide solutions, it is necessary to add that the end of the steam delivery pipe 21 furthest from the constant pressure regulating cylinder 18 is fixedly connected to the suction end of an external steam extraction pump. This steam extraction pump can then extract the steam generated during centrifugal concentration inside the outer cylinder 1 and transport it to the subsequent condensation equipment.

[0030] In this embodiment, the top of the bearing ring 26 and the bottom of the connecting ring 27 are both smooth planes, which makes the sliding of the connecting ring 27 on the bearing ring 26 smoother.

[0031] In this embodiment, a horizontal guide rod 23 is fixedly installed on the inner right side of the constant pressure regulating cylinder 18, and a horizontal guide groove is opened at the right end of the piston column 19. The left end of the horizontal guide rod 23 is slidably installed in the horizontal guide groove, which plays the role of guiding the sliding direction of the piston column 19, so that the piston column 19 maintains horizontal sliding within the constant pressure regulating cylinder 18.

[0032] In this embodiment, the diameter of the piston rod 19 is larger than the outer diameter of the steam discharge pipe 17, which ensures that the piston rod 19 can completely and effectively seal the right end of the steam discharge pipe 17.

[0033] In this embodiment, it should be noted that the air pump 9, motor 15, electromagnetic check valve 22, and electric heating rod 25 are all available from the market or custom-made by the factory. The air pump 9, motor 15, electromagnetic check valve 22, and electric heating rod 25 are all equipped with power supplies. Their wiring connections and control methods are mature technologies in the field and have been fully disclosed. Therefore, they will not be repeated in the specification.

[0034] With the above structure, the centrifugal concentration device for biopesticide production provided by this utility model can automatically maintain a constant pressure value inside the outer cylinder 1 during use, improving the centrifugal concentration quality of the biopesticide solution. In specific operation, unscrew the first end cap 6, pour the biopesticide solution into the centrifuge tank 4 through the feed pipe 5, tighten the first end cap 6 at the top of the feed pipe 5 after pouring, then close the solenoid check valve 22, and then start the vacuum pump 9 to continuously extract air from inside the outer cylinder 1, gradually generating negative pressure inside the outer cylinder 1. By observing the negative pressure value displayed on the pressure gauge 12, when the required negative pressure value is generated inside the outer cylinder 1, stop the vacuum pump 9. A negative pressure is also formed in the space to the left of the piston column 19. Since the vent 20 is connected to the external air, the pressure difference between the space to the left and right of the piston column 19 will be used to push the piston column 19 to the left until it is tightly in contact with the right end of the steam discharge pipe 17. The piston column 19 will completely and effectively seal the right end of the steam discharge pipe 17. Then, the motor 15 and the electric heating rod 25 are controlled to operate. The electric heating rod 25 heats the biological pesticide solution at a constant temperature. The motor 15 drives the gear 16 to rotate. By using the meshing transmission action of the gear 16 and the external gear ring 13, the discharge pipe 7 and the centrifuge tank 4 can be controlled to rotate. Thus, the biological pesticide solution can be processed under negative pressure and heating conditions. During centrifugal concentration, the solenoid check valve 22 is kept open. The solvent in the biopesticide solution evaporates under negative pressure, generating vapor. This causes the negative pressure inside the outer cylinder 1 to gradually decrease, while the pressure gradually increases. The vapor pressure then pushes the piston rod 19 to move gradually to the right (away from the steam discharge pipe 17). The piston rod 19 then releases the blockage on the right end of the steam discharge pipe 17. The vapor generated inside the outer cylinder 1 is then controlled to be drawn out sequentially through the steam discharge pipe 17 and the steam delivery pipe 21. As the vapor inside the outer cylinder 1 is continuously drawn out, the negative pressure inside the outer cylinder 1 gradually increases again, and the pressure gradually increases... As the negative pressure inside the outer cylinder 1 gradually decreases, when it increases back to the required value, under the action of atmospheric pressure, the piston rod 19 can be pushed to the left again to tightly contact the right end of the steam discharge pipe 17 to achieve a sealing effect. Thus, through the above steps, the purpose of sealing and unsealing the right end of the steam discharge pipe 17 can be controlled, so that the steam generated inside the outer cylinder 1 can be discharged as needed, thereby maintaining a constant pressure inside the outer cylinder 1 and improving the centrifugal concentration quality of the biological pesticide solution. After the centrifugal concentration of the biological pesticide solution is completed, the motor 15 and the electric heating rod 25 are turned off, the second end cap 8 is unscrewed, and the concentrated biological pesticide in the centrifuge tank 4 can be discharged from the discharge pipe 7.

Claims

1. A centrifugal concentration device for the production of biological pesticides, characterized in that, The system includes an outer cylinder (1) with an open top and a support leg (2) fixedly installed at the bottom. A cylinder cover (3) is bolted to the top of the outer cylinder (1). A support assembly is installed inside the outer cylinder (1), and a centrifuge tank (4) is mounted on the support assembly. The centrifuge tank (4) has an open top. A feed pipe (5) is fixedly installed on the top of the cylinder cover (3). The bottom end of the feed pipe (5) passes through the cylinder cover (3) and extends into the centrifuge tank (4). A first end cap (6) is threaded onto the top of the feed pipe (5). A discharge pipe (7) is fixedly installed at the center of the bottom of the centrifuge tank (4). A round hole is provided on the bottom inner wall of the container. The bottom end of the discharge pipe (7) passes through the round hole and is threaded with a second end cap (8). The discharge pipe (7) is rotatably connected to the round hole through a bearing. A mounting base (24) is fixedly installed at the bottom center of the cylinder cover (3). An electric heating rod (25) is fixedly installed at the bottom of the mounting base (24). The bottom end of the electric heating rod (25) passes through the centrifuge barrel (4) and extends into the discharge pipe (7). An air extraction component is provided on the left side of the outer cylinder (1). A driving component is provided at the bottom of the outer cylinder (1). A steam discharge pipe (17) is fixedly installed on the top right side of the outer cylinder (1). A constant pressure component is provided at the right end of the steam discharge pipe (17).

2. The centrifugal concentration device for biopesticide production according to claim 1, characterized in that: The support assembly includes a bearing ring (26), a connecting ring (27), and a guide ring (28). The bearing ring (26) is fixedly installed on the inner wall of the outer cylinder (1). The bottom of the centrifuge barrel (4) passes through the bearing ring (26). The connecting ring (27) is fixedly sleeved on the outer wall of the centrifuge barrel (4). The bottom of the connecting ring (27) slides in contact with the top of the bearing ring (26). The guide ring (28) is fixedly installed on the bottom of the connecting ring (27). The top of the bearing ring (26) is provided with an annular guide groove (29). The guide ring (28) slides in the annular guide groove (29).

3. The centrifugal concentration device for biopesticide production according to claim 2, characterized in that: The top of the bearing ring (26) and the bottom of the connecting ring (27) are both smooth planes.

4. The centrifugal concentration device for biopesticide production according to claim 1, characterized in that: The air extraction assembly includes an air pump (9), an air extraction pipe (10), and a gas check valve (11). The air pump (9) is fixedly installed on the left outer wall of the outer cylinder (1). One end of the air extraction pipe (10) is fixedly connected to the suction end of the air pump (9). The end of the air extraction pipe (10) away from the air pump (9) extends into the outer cylinder (1) and is located above the support assembly. The gas check valve (11) is fixedly installed on the air extraction pipe (10). A pressure gauge (12) is fixedly installed on the left side of the outer cylinder (1).

5. A centrifugal concentration device for biopesticide production according to claim 1, characterized in that: The drive assembly includes an external gear ring (13), an L-shaped plate (14), a motor (15), and a gear (16). The external gear ring (13) is fixedly sleeved on the outer wall of the discharge pipe (7) and located below the outer cylinder (1). The L-shaped plate (14) is fixedly installed at the bottom of the outer cylinder (1). The motor (15) is fixedly installed on the L-shaped plate (14). The gear (16) is fixedly installed at the output shaft end of the motor (15). The gear (16) meshes with the external gear ring (13).

6. The centrifugal concentration device for biopesticide production according to claim 1, characterized in that: The constant pressure assembly includes a constant pressure regulating cylinder (18), a piston column (19), a steam delivery pipe (21), and an electromagnetic one-way valve (22). The constant pressure regulating cylinder (18) is fixedly installed at the right end of the steam discharge pipe (17), and the right end of the steam discharge pipe (17) extends into the constant pressure regulating cylinder (18). The piston column (19) is located inside the constant pressure regulating cylinder (18), and the outer wall of the piston column (19) is in sliding sealing contact with the inner wall of the constant pressure regulating cylinder (18). A vent hole (20) is provided on the right side wall of the constant pressure regulating cylinder (18). The steam delivery pipe (21) is fixedly installed at the top of the constant pressure regulating cylinder (18) and located to the left of the piston column (19). The steam delivery pipe (21) is connected to the inside of the constant pressure regulating cylinder (18). The electromagnetic one-way valve (22) is fixedly installed on the steam delivery pipe (21).

7. A centrifugal concentration device for biopesticide production according to claim 6, characterized in that: A horizontal guide rod (23) is fixedly installed on the inner right side of the constant pressure regulating cylinder (18). A horizontal guide groove is opened at the right end of the piston column (19), and the left end of the horizontal guide rod (23) is slidably installed in the horizontal guide groove.

8. A centrifugal concentration device for biopesticide production according to claim 6, characterized in that: The diameter of the piston rod (19) is larger than the outer diameter of the steam discharge pipe (17).

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