Air filter for production and fermentation of feed enzyme preparation

Abstract

The invention belongs to the technical field of environmental protection equipment, and particularly relates to an air filter for feed enzyme preparation production fermentation, which comprises a water tank and a controller fixed on one side of the top of the water tank, and further comprises an accelerating tube vertically inserted in the top of the water tank, the inner diameter of the air inlet end of the accelerating tube is larger than that of the air outlet end, and the air inlet end of the accelerating tube is communicated with the controller. A pressure valve is mounted in the accelerating tube; a tail gas inlet pipe is arranged above the accelerating pipe, and a compression accelerating unit is arranged between the tail gas inlet pipe and the accelerating pipe. The device can efficiently separate thalli, hyphae and other impurities in fermentation tail gas, break foam, cool and dehumidify, eliminate filtering blockage, is simple and convenient to maintain, can improve the tail gas impact uniformity and the impurity separation effect, guarantees the purification efficiency, can deeply adsorb water vapor and trace pollutants, avoids filler blockage and airflow short circuit, and improves the service life of the device. And stable up-to-standard emission of tail gas is realized.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection equipment technology, and in particular relates to an air filter for fermentation in the production of feed enzyme preparations. Background Technology

[0002] Feed enzyme preparations are produced by aerobic fermentation, which requires a continuous supply of air to meet the enzyme production needs of microorganisms. The air intake needs to be filtered and sterilized to prevent contamination by other bacteria. The exhaust gas contains bacteria, dust and odors, which also need to be filtered and purified to meet emission standards.

[0003] During the fermentation of feed enzyme preparations, an air filter needs to be installed at the air inlet to filter out dust and other impurities in the air, ensuring the safety of pure fermentation. However, the exhaust gas at the outlet contains pollutants such as bacteria, mycelia, fermentation broth droplets, organic acids, and bioaerosols. Compared to the incoming air, the exhaust gas produced by fermentation has a more complex composition, placing higher demands on the filter. However, existing exhaust gas filters mostly use conventional dry filter cartridge structures. When directly filtering exhaust gas, this structure is easily clogged by foam and droplets, leading to a sudden increase in filter cartridge pressure drop, poor ventilation, and affecting the stability of fermenter pressure. It also suffers from problems such as rapid filter cartridge wear, incomplete purification of bioaerosols and odors, and high operation and maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing an air filter for fermentation in the production of feed enzyme preparations.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an air filter for fermentation in the production of feed enzyme preparations, comprising a water tank and a controller fixed to one side of the top of the water tank, and further comprising:

[0006] An acceleration tube is vertically inserted into the top of the water tank. The inner diameter of the air inlet of the acceleration tube is larger than the inner diameter of the air outlet. A pressure valve is installed inside the acceleration tube.

[0007] An exhaust gas inlet pipe is located above the acceleration pipe, and a compression acceleration unit is provided between the exhaust gas inlet pipe and the acceleration pipe.

[0008] An adsorption unit is installed on the top of the water tank and is connected to the interior of the water tank.

[0009] Preferably, the compression acceleration unit includes a compression tank disposed above the water tank, the exhaust gas inlet pipe is fixedly inserted into the top of the compression tank, the acceleration pipe is fixedly inserted into the bottom of the compression tank, a movable plate is slidably disposed inside the compression tank, telescopic airbags are fixed between the upper and lower sides of the movable plate and the inner wall of the compression tank, and the acceleration pipe and the exhaust gas inlet pipe are both connected to the telescopic airbags on the same side, a vent hole is opened on the end face of the movable plate, and a one-way valve is fixedly disposed inside the vent hole, a set of synchronous electric actuators is fixedly inserted into the top of the compression tank, and the movable end of the synchronous electric actuators is fixedly connected to the top of the movable plate, and the synchronous electric actuators are electrically connected to the controller.

[0010] Preferably, the adsorption unit includes an annular box fixed to the top of the water tank. The bottom of the annular box has an annular opening, and an annular bottom mesh is fixed inside the annular opening. The top of the water tank has several evenly distributed annular arc-shaped holes, which are connected to the interior of the annular box through the annular opening. Two annular plates are slidably arranged inside the annular box, and several connecting holes are opened on the surface of the annular plates. A detachable annular cover is installed on the top of the annular box. The interior of the annular box, between the annular bottom mesh and the lower annular plate, is filled with moisture-absorbing filler. The interior of the annular box, between the annular cover and the upper annular plate, is filled with activated carbon filler. An exhaust pipe is fixedly inserted into the top of the annular cover. A vibration mechanism is provided between the two annular plates.

[0011] Preferably, the vibration mechanism includes multiple sets of mounting holes formed on the surfaces of two annular plates. A metal sheet is fixed inside the mounting hole, and a metal vibrating rod is inserted through the metal sheet. Several connecting blocks are fixed between the two annular plates. A horizontally arranged guide rod is fixed to the side wall of the connecting block, and a moving plate is slidably connected to the guide rod. Impact plates are provided on both sides of the end of the metal vibrating rod, and the impact plates are fixedly connected to the surfaces of the moving plates. A support block is fixed to the surface of the annular plate, and a spring is fixed between the support block and the impact plate on the same side.

[0012] Preferably, a number of permanent magnets corresponding to the position of the movable plate are fixedly inserted into the side wall of the movable plate, and an iron block is fixed to one end of the movable plate near the movable plate. The side walls of the annular box and the compression tank are jointly provided with square holes that match the iron block.

[0013] Preferably, the inner wall of the water tank is conical, and a sedimentation cylinder is fixedly inserted into the conical bottom of the water tank. A drain pipe is fixedly inserted into the bottom of the sedimentation cylinder, and a drain valve is installed inside the drain pipe.

[0014] Preferably, a water supply pipe is fixedly connected to the top of the water tank, and a water supply electric control valve is installed inside the water supply pipe.

[0015] Preferably, a level gauge is fixedly inserted into the top of the water tank, and the detection end of the level gauge is located inside the water tank. The controller controls the water supply valve to work according to the electrical signal fed back by the level gauge.

[0016] Compared with existing technologies, the advantages of an air filter for fermentation in the production of feed enzyme preparations are:

[0017] 1. Through the coordinated operation of the water tank, controller, acceleration pipe, pressure valve, and exhaust gas inlet pipe, the exhaust gas generated by the fermentation of feed enzyme preparations is vertically guided to the water surface. Utilizing inertia, impurities such as bacteria and mycelia in the exhaust gas collide with the water surface and are wetted and adhered, achieving efficient gas-solid separation. At the same time, the foam breaks down quickly upon contact with water, and the exhaust gas is cooled and dehumidified. This eliminates the need for traditional filter cartridges, making maintenance convenient and less prone to clogging due to the high humidity, viscous foam, mycelial flocs, and fermentation liquid droplets in the exhaust gas from feed enzyme preparation fermentation.

[0018] 2. The compression acceleration unit not only improves the speed and uniformity of the exhaust gas impacting the water surface, but also allows impurities in the exhaust gas to aggregate before impacting the water, thus enhancing the subsequent filtration effect of the water on these impurities.

[0019] 3. The adsorption unit can perform dual adsorption and filtration of water vapor and minute pollutants in the exhaust gas. Since the water has filtered out most of the impurities, the packing is not easy to clog. In addition, the vibration mechanism can use the action of compressed gas to vibrate the packing inside the adsorption unit, so as to avoid the formation of a water film inside the packing that affects the gas passage and to prevent the exhaust gas from flowing along a fixed path, which would affect the adsorption effect. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an air filter for fermentation in the production of feed enzyme preparations provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom structure of an air filter for fermentation in the production of feed enzyme preparations provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the compression acceleration unit of an air filter for fermentation in the production of feed enzyme preparations provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a water tank for an air filter used in the fermentation of feed enzyme preparations, provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the internal structure of an annular box for an air filter used in the fermentation of feed enzyme preparations provided by the present invention;

[0025] Figure 6 This invention provides an air filter for fermentation in the production of feed enzyme preparations. Figure 5 Enlarged view of the structure of part A in the middle.

[0026] In the diagram: 1. Water tank; 2. Controller; 3. Acceleration pipe; 4. Pressure valve; 5. Exhaust gas inlet pipe; 6. Compression acceleration unit; 61. Compression tank; 62. Movable plate; 63. Telescopic airbag; 64. One-way valve; 65. Synchronous electric actuator; 7. Adsorption unit; 71. Annular box; 72. Annular bottom mesh; 73. Arc-shaped hole; 74. Annular plate; 75. Connecting hole; 76. Annular cover; 77. Exhaust pipe; 8. Vibration mechanism; 81. Metal sheet; 82. Metal vibrator; 83. Connecting block; 84. Guide rod; 85. Moving plate; 86. Impact plate; 87. Support block; 88. Spring; 9. Permanent magnet; 10. Iron block; 11. Square hole; 12. Sedimentation cylinder; 13. Drain pipe; 14. Drain valve; 15. Water supply pipe; 16. Water supply electric control valve; 17. Level gauge. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] like Figures 1-6 As shown, an air filter for fermentation in the production of feed enzyme preparations includes a water tank 1 and a controller 2 fixed to one side of the top of the water tank 1. It also includes an acceleration pipe 3, which is vertically inserted into the top of the water tank 1. The inner diameter of the inlet end of the acceleration pipe 3 is larger than the inner diameter of the outlet end. A pressure valve 4 is installed inside the acceleration pipe 3. An exhaust gas inlet pipe 5 is located above the acceleration pipe 3. A compression acceleration unit 6 is provided between the exhaust gas inlet pipe 5 and the acceleration pipe 3. The compression acceleration unit 6 includes a compression tank 61 located above the water tank 1. The exhaust gas inlet pipe 5 is fixedly inserted into the top of the compression tank 61. Pipe 3 is fixedly inserted into the bottom of compression tank 61. A movable plate 62 is slidably provided inside compression tank 61. Telescopic airbags 63 are fixed between the upper and lower sides of movable plate 62 and the inner wall of compression tank 61. Acceleration pipe 3 and exhaust gas inlet pipe 5 are connected to telescopic airbags 63 on the same side. A vent hole is opened on the end face of movable plate 62. A one-way valve 64 is fixed inside the vent hole. A set of synchronous electric push rods 65 is fixedly inserted into the top of compression tank 61. The movable end of synchronous electric push rod 65 is fixedly connected to the top of movable plate 62. Synchronous electric push rod 65 is electrically connected to controller 2.

[0029] The adsorption unit 7 is installed on the top of the water tank 1 and is connected to the interior of the water tank 1. The adsorption unit 7 includes an annular box 71 fixed on the top of the water tank 1. An annular opening is provided at the bottom of the annular box 71, and an annular bottom mesh 72 is fixed inside the annular opening. Several evenly distributed annular arc-shaped holes 73 are provided on the top of the water tank 1, and the arc-shaped holes 73 are connected to the interior of the annular box 71 through the annular opening. Two annular plates 74 are slidably provided inside the annular box 71, and several connecting holes 75 are provided on the surface of the annular plates 74. A detachable annular cover 76 is installed on the top of the annular box 71. The interior of the annular box 71, between the annular bottom mesh 72 and the lower annular plate 74, is filled with moisture-absorbing filler. The interior of the annular box 71, between the annular cover 76 and the upper annular plate 74, is filled with activated carbon filler. An exhaust pipe 77 is fixedly inserted into the top of the annular cover 76. A vibration mechanism 8 is provided between the two annular plates 74. The moisture-absorbing filler can be silica gel desiccant.

[0030] The vibration mechanism 8 includes multiple sets of mounting holes on the surfaces of two annular plates 74. Metal sheets 81 are fixed inside the mounting holes, and metal vibrating rods 82 are inserted through the metal sheets 81. Several connecting blocks 83 are fixed between the two annular plates 74. Horizontally arranged guide rods 84 are fixed to the side walls of the connecting blocks 83, and movable plates 85 are slidably connected to the guide rods 84. Impact plates 86 are provided on both sides of the ends of the metal vibrating rods 82, and the impact plates 86 are fixedly connected to the surfaces of the movable plates 85. Support blocks 87 are fixed to the surfaces of the annular plates 74, and springs 88 are fixed between the support blocks 87 and the impact plates 86 on the same side. By vibrating the activated carbon packing and the moisture-absorbing packing, the vibration can break up any water film that may be generated inside the activated carbon packing and the moisture-absorbing packing, and prevent gas from flowing along a fixed path inside the activated carbon packing and the moisture-absorbing packing, ensuring that the exhaust gas maintains a high throughput efficiency and improving the treatment effect of the activated carbon packing and the moisture-absorbing packing on the exhaust gas.

[0031] Several permanent magnets 9 corresponding to the positions of the movable plate 85 are fixedly inserted into the side wall of the movable plate 62. An iron block 10 is fixed to one end of the movable plate 85 near the movable plate 62. The side walls of the annular box 71 and the compression tank 61 are provided with square holes 11 that match the iron block 10. When the movable plate 62 moves up and down, the movable plate 85 can be moved by magnetic attraction without the need for an additional driving source.

[0032] The inner wall of water tank 1 is conical, and a sedimentation cylinder 12 is fixedly inserted into the bottom of the conical water tank 1. A drain pipe 13 is fixedly inserted into the bottom of the sedimentation cylinder 12, and a drain valve 14 is installed inside the drain pipe 13. By making the inner wall of water tank 1 conical, it is convenient for impurities in the water to settle into the sedimentation cylinder 12. The staff needs to open the drain valve 14 regularly to replace the water inside water tank 1.

[0033] A water supply pipe 15 is fixedly connected to the top of the water tank 1, and a water supply electric control valve 16 is installed inside the water supply pipe 15 to facilitate the replenishment of water into the water tank 1.

[0034] A level gauge 17 is fixedly connected to the top of the water tank 1, and the detection end of the level gauge 17 is located inside the water tank 1. The controller 2 controls the water replenishment valve 16 to work according to the electrical signal fed back by the level gauge 17. The level gauge 17 can detect the liquid level inside the water tank 1. When too much water evaporates inside the water tank 1, the level gauge 17 will feed back an electrical signal to the controller 2. At this time, the controller 2 will control the water replenishment valve 16 to open, and external tap water will be replenished into the water tank 1 through the pipeline and the water replenishment pipe 15 to ensure that the water level inside the water tank 1 is at a suitable height and to avoid affecting the effect of filtration of exhaust gas.

[0035] The operating principle of the present invention is explained as follows: the exhaust gas inlet pipe 5 is connected to the exhaust gas outlet end of the fermentation container, and the water supply pipe 15 is connected to the external tap water pipeline. The controller 2 is started to perform exhaust gas filtration.

[0036] The exhaust gas generated by the fermentation vessel enters the upper telescopic air bladder 63 through the exhaust gas inlet pipe 5. When the controller 2 is activated, it controls the synchronous electric actuator 65 to move downwards, pushing the movable plate 62. At this time, the upper telescopic air bladder 63 expands downwards, while the lower telescopic air bladder 63 is compressed. Under the action of the one-way valve 64, the exhaust gas inside the upper telescopic air bladder 63 cannot enter the lower telescopic air bladder 63. The exhaust gas inside the lower telescopic air bladder 63 is compressed, and the pressure gradually increases. Under the action of this pressure, the valve core of the pressure valve 4 is pushed open, and the high-pressure gas is rapidly ejected downwards through the acceleration pipe 3 to the water surface inside the water tank 1. The acceleration pipe 3 is perpendicular to the water surface, so after impacting the water surface, the gas flows horizontally along the water surface rapidly. Under inertia, the bacteria, mycelia, and fermentation liquid droplets in the gas directly immerse themselves in the liquid. Utilizing the strong wetting and adhesion properties of water on the bacteria, mycelia, and fermentation liquid droplets, as well as the inertial settling effect, combined with the water... The liquid seal capture effect ensures that solid and liquid impurities are firmly bound by the water and quickly settle and separate, thus preventing bacteria and mycelia from flowing synchronously with the gas. The gas enters the hygroscopic packing through the arc-shaped hole 73 at the top of the water tank 1 and the annular bottom mesh 72. Then, it enters the activated carbon packing through the connecting holes 75 on the surface of the two annular plates 74 and is finally discharged through the exhaust pipe 77. As the gas passes through the inside of the water tank 1, it carries away some water vapor, which increases the humidity of the residual impurities in the gas. When it passes through the hygroscopic packing, the hygroscopic packing captures water vapor, further filtering and retaining the residual impurities in the gas. Finally, the porous adsorption of the activated carbon packing effectively adsorbs residual trace amounts of volatile organic compounds, organic acid odors, alcohols, and sulfur- and nitrogen-containing odorous gases in the exhaust gas, while retaining trace amounts of suspended biological impurities, completing deep purification. This ensures that the final exhaust gas is odorless and free of bioaerosols, meeting environmental emission requirements.

[0037] When the limit switch of the synchronous electric push rod 65 detects that the movable end of the synchronous electric push rod 65 has extended to the position, the synchronous electric push rod 65 begins to drive the movable plate 62 to move back. At this time, the lower telescopic air bag 63 begins to stretch upward, the high pressure disappears, the pressure valve 4 closes, and the upper telescopic air bag 63 is compressed. At this time, the exhaust gas inside the upper telescopic air bag 63 will enter the lower telescopic air bag 63 through the one-way valve 64. After the movable plate 62 moves back to the position, the synchronous electric push rod 65 pushes the movable plate 62 down again. The above steps are repeated to continuously extract the exhaust gas in the fermentation container and make the exhaust gas sprayed to the water surface at high speed and evenly.

[0038] During the reciprocating movement of the movable plate 62, the movable plate 62 will drive the permanent magnet 9 through the square hole 11. When the permanent magnet 9 passes through the square hole 11, it will generate a magnetic attraction force on the iron blocks 10 at the ends of each movable plate 85. At this time, the iron blocks 10 will drive the movable plate 85 to move towards the permanent magnet 9. The spring 88 on the side of the support block 87 away from the square hole 11 will be stretched, and the spring 88 on the side of the support block 87 close to the square hole 11 will be compressed. When the permanent magnet 9 leaves the position of the square hole 11, under the action of the spring 88, the movable plate 85 will quickly move horizontally. At this time, the impact plate 86 will hit the corresponding metal vibrator 82, so that the metal vibrator 82 will vibrate. Under the action of vibration, the activated carbon packing and the moisture-absorbing packing will vibrate slightly. The vibration can be used to break the water film that may be generated inside the activated carbon packing and the moisture-absorbing packing, and to prevent the gas from flowing along the fixed path inside the activated carbon packing and the moisture-absorbing packing, so as to ensure the normal passage efficiency of the exhaust gas and improve the treatment effect of the activated carbon packing and the moisture-absorbing packing on the exhaust gas.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air filter for fermentation in the production of feed enzyme preparations, comprising a water tank (1) and a controller (2) fixed to one side of the top of the water tank (1), characterized in that, Also includes: An acceleration tube (3) is vertically inserted into the top of the water tank (1). The inner diameter of the air inlet of the acceleration tube (3) is larger than the inner diameter of the air outlet. A pressure valve (4) is installed inside the acceleration tube (3). An exhaust gas inlet pipe (5) is located above the acceleration pipe (3), and a compression acceleration unit (6) is provided between the exhaust gas inlet pipe (5) and the acceleration pipe (3). An adsorption unit (7) is installed on the top of the water tank (1) and is connected to the interior of the water tank (1).

2. An air filter for fermentation in the production of feed enzyme preparations according to claim 1, characterized in that, The compression acceleration unit (6) includes a compression tank (61) located above the water tank (1). The exhaust gas inlet pipe (5) is fixedly inserted into the top of the compression tank (61). The acceleration pipe (3) is fixedly inserted into the bottom of the compression tank (61). A movable plate (62) is slidably provided inside the compression tank (61). Telescopic airbags (63) are fixed between the upper and lower sides of the movable plate (62) and the inner wall of the compression tank (61). The acceleration pipe (3) and the exhaust gas inlet pipe (5) are connected to the telescopic airbags (63) on the same side. A vent is provided on the end face of the movable plate (62). A one-way valve (64) is fixed inside the vent. A set of synchronous electric push rods (65) is fixedly inserted into the top of the compression tank (61). The movable end of the synchronous electric push rod (65) is fixedly connected to the top of the movable plate (62). The synchronous electric push rod (65) is electrically connected to the controller (2).

3. An air filter for fermentation in the production of feed enzyme preparations according to claim 2, characterized in that, The adsorption unit (7) includes an annular box (71) fixed to the top of the water tank (1). The bottom of the annular box (71) has an annular opening, and an annular bottom mesh (72) is fixed inside the annular opening. The top of the water tank (1) has several evenly distributed annular arc-shaped holes (73), and the arc-shaped holes (73) are connected to the inside of the annular box (71) through the annular opening. The inside of the annular box (71) is slidably provided with two annular plates (74), and the surface of the annular plates (74) has several connecting holes. 75), the top of the annular box (71) is equipped with a detachable annular cover (76), the interior of the annular box (71) between the annular bottom mesh (72) and the lower annular plate (74) is filled with moisture-absorbing filler, the interior of the annular box (71) between the annular cover (76) and the upper annular plate (74) is filled with activated carbon filler, the top of the annular cover (76) is fixedly connected with an exhaust pipe (77), and a vibration mechanism (8) is provided between the two annular plates (74).

4. An air filter for fermentation in the production of feed enzyme preparations according to claim 3, characterized in that, The vibrating mechanism (8) includes multiple sets of mounting holes on the surfaces of two annular plates (74). A metal sheet (81) is fixed inside the mounting hole, and a metal vibrating rod (82) is inserted through the metal sheet (81). Several connecting blocks (83) are fixed between the two annular plates (74). A horizontally arranged guide rod (84) is fixed on the side wall of the connecting block (83), and a moving plate (85) is slidably connected to the guide rod (84). Impact plates (86) are provided on both sides of the end of the metal vibrating rod (82), and the impact plate (86) is fixedly connected to the surface of the moving plate (85). A support block (87) is fixed on the surface of the annular plate (74), and a spring (88) is fixed between the support block (87) and the impact plate (86) on the same side.

5. An air filter for fermentation in the production of feed enzyme preparations according to claim 4, characterized in that, The side wall of the movable plate (62) is fixedly connected with several permanent magnets (9) corresponding to the position of the movable plate (85). The end of the movable plate (85) near the movable plate (62) is fixed with an iron block (10). The side wall of the annular box (71) and the compression tank (61) are jointly provided with square holes (11) that match the iron block (10).

6. An air filter for fermentation in the production of feed enzyme preparations according to claim 1, characterized in that, The inner wall of the water tank (1) is conical, and a sedimentation cylinder (12) is fixedly inserted into the conical bottom of the water tank (1). A drain pipe (13) is fixedly inserted into the bottom of the sedimentation cylinder (12), and a drain valve (14) is installed inside the drain pipe (13).

7. An air filter for fermentation in the production of feed enzyme preparations according to claim 1, characterized in that, A water supply pipe (15) is fixedly connected to the top of the water tank (1), and a water supply electric control valve (16) is installed inside the water supply pipe (15).

8. An air filter for fermentation in the production of feed enzyme preparations according to claim 7, characterized in that, A level gauge (17) is fixedly inserted into the top of the water tank (1), and the detection end of the level gauge (17) is located inside the water tank (1). The controller (2) controls the water supply valve (16) to work according to the electrical signal fed back by the level gauge (17).

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