Plant insecticide production spray drying equipment and its processing technology

Abstract

The application relates to the technical field of spray dryers, and discloses a spray drying device for plant insecticide production and a processing technology thereof. A conical cylinder is lapped on the inside of a cylinder body, an installation groove is arranged in the conical cylinder, an electromagnetic block and a sliding block are arranged in the installation groove, a conductor ball is embedded in the side wall of the conical cylinder, a conductor block is embedded in the inner wall of the cylinder body, a gas permeation membrane is arranged in the conical cylinder, a power motor for driving the conical cylinder to rotate is arranged on a support, a sliding groove is arranged on the inner wall of the cylinder body, a supporting spring, a permanent magnet block and a coil are arranged in the sliding groove, the adjacent permanent magnet blocks repel each other, and a flexible vibration rod is arranged on the side wall of the sliding groove. Through reciprocating movement of the sliding block, the gas permeation membrane is impacted by extruded gas, powder adhered or accumulated on the gas permeation membrane is shaken off, the gas enters the conical cylinder and the cylinder body through the gas permeation membrane, an upward airflow is generated in the conical cylinder and the cylinder body, the drying time of the mist drops is prolonged, and the inner wall of the cylinder body vibrates to make the powder on the side wall fall off.

Description

Technical Field

[0001] This application relates to the field of spray drying technology, and in particular to a spray drying device and its processing technology for the production of plant pesticides. Background Technology

[0002] Insecticides are pesticides used to kill pests and control them. The production of insecticides involves steps such as raw material preparation, reaction preparation, refining, blending and formulation, drying, packaging, and storage. High-speed centrifugal spray dryers are widely used in the process of drying insecticide solutions into powders.

[0003] High-speed centrifugal spray dryers are a new type of high-efficiency drying equipment. They can evaporate moisture within seconds, transforming the spray into powdery, granular, hollow sphere, or spherical products that meet production requirements. They are ideal drying equipment for industries such as pharmaceuticals, bioengineering, and chemicals. However, because the bottom of the centrifugal spray dryer is funnel-shaped, the dried powdery product falls onto the sidewalls of the funnel bottom, causing product adhesion and affecting the discharge of the dried product. In actual operation, the product solution enters the top of the cylinder through the centrifugal atomizer, and hot air also enters from the top of the high-speed centrifugal spray in a spiral shape. This spiral hot air carries the atomized droplets directly towards the bottom of the cylinder. When the product has high moisture content, the droplets flow rapidly into the bottom of the cylinder, resulting in incomplete drying and reducing the effectiveness of the centrifugal spray dryer. Summary of the Invention

[0004] This application proposes a spray drying equipment and processing technology for the production of plant insecticides, which has the advantages of preventing powder from accumulating on the bottom sidewall and extending the drying time, thereby solving the problems of powdered products accumulating on the bottom sidewall after drying and incomplete drying caused by rapid droplet falling.

[0005] To achieve the above objectives, this application adopts the following technical solution: a spray drying device for producing plant insecticides, comprising a support and a cylinder. A feed pipe is fixedly installed in the middle of the support, and a bearing is fixedly sleeved on the outer side of the feed pipe. A retaining ring is fixedly installed at the bottom of the inner wall of the cylinder, and a conical cylinder overlaps the retaining ring. The inner wall of the conical cylinder is fixedly sleeved on the outer side of the bearing. Several mounting grooves are arranged in a circular array inside the conical cylinder. Several electromagnetic blocks are equidistantly installed in the mounting grooves, and sliders are slidably installed between the electromagnetic blocks. Ventilation holes are opened on the side wall of the mounting groove at the upper end of the electromagnetic blocks. Two one-way valves are fixedly installed on the side wall of the mounting slot at the lower end of the electromagnetic block. The two one-way valves are respectively connected to the inner and outer sides of the conical cylinder. Conductor balls are embedded in the side wall of the conical cylinder and are electrically connected to the electromagnetic block. Conductor blocks are embedded in a ring array on the inner wall of the cylinder. The conductor balls are in rolling contact with the conductor blocks. A support ring is fixedly installed on the side wall of the cylinder. A gas permeation membrane is fixedly installed on the upper end of the support ring and the upper end of the feed pipe. A toothed ring is fixedly installed on the outer wall of the conical cylinder. A power motor is fixedly installed on the upper end of the support. The power motor meshes with the toothed ring through a power gear.

[0006] Furthermore, the slider is a permanent magnet, and when the electromagnetic block is energized, the bottom end of the electromagnetic block generates a magnetic force that repels the top end of the slider.

[0007] Furthermore, the flow direction of the one-way valve on the inner side of the conical cylinder is from inside the mounting groove to between the conical cylinder and the gas permeation membrane; the flow direction of the one-way valve on the outer side of the conical cylinder is from outside the mounting groove to inside the mounting groove.

[0008] Furthermore, the inner wall of the cylinder is provided with a number of sliding grooves arranged in a ring array. The bottom end of the side wall of the sliding groove is connected to the mounting groove. A support spring is fixedly installed at the bottom end of the sliding groove. A number of permanent magnet blocks are slidably installed in the same sliding groove. The permanent magnet blocks are located at the upper end of the support spring. Adjacent permanent magnet blocks generate repulsive magnetic forces. A number of coils are embedded in the side wall of the sliding groove.

[0009] Furthermore, a flexible vibration rod is fixedly installed on the side wall of the chute, and the flexible vibration rod is located between two adjacent permanent magnet blocks.

[0010] Furthermore, the flexible vibration rod is a rod capable of generating a certain degree of elasticity.

[0011] Furthermore, spray drying includes the following steps:

[0012] S1. As the conical cylinder rotates, the slider inside the conical cylinder generates centrifugal force. The slider squeezes the gas in the installation groove, causing the gas in the installation groove to enter between the conical cylinder and the gas permeation membrane through the one-way valve on the inside of the conical cylinder. The airflow impacts the gas permeation membrane, causing the gas permeation membrane to shake, thereby shaking off the powder that is stuck or accumulated on the gas permeation membrane.

[0013] S2. When the conical cylinder rotates, the conductor balls of the conical cylinder contact the conductor block, causing the electromagnetic block to generate magnetic force. The electromagnetic block generates a repulsive force on the slider, causing the slider to reset. At the same time, the electromagnetic block generates a repulsive force with the permanent magnet block at the lowest end, pushing the permanent magnet block to slide upward in the groove. The permanent magnet block also slides downward under the action of gravity and the repulsive force of adjacent permanent magnet blocks. When the permanent magnet block slides up and down, it passes through the coil, generating current in the coil. Under the action of the coil resistance, a certain amount of heat is generated, reducing the heat leakage from the side wall of the cylinder. In addition, the permanent magnet block hits the flexible vibrating rod, causing the flexible vibrating rod to vibrate. The vibrating flexible vibrating rod drives the side wall of the cylinder to vibrate, causing the powder adhering to the side wall of the cylinder to fall into the cylinder.

[0014] 1. The spray drying equipment for producing plant insecticides provided in this application is modified from a fixedly connected cylinder and a conical cylinder to a movable installation. The conical cylinder is driven to rotate by a power motor, a power gear, and a gear ring. The rotation of the conical cylinder causes the slider inside the conical cylinder to generate centrifugal force, which in turn generates extrusion force. The extruded gas enters between the gas permeation membrane and the conical cylinder. Under the action of the electromagnetic block, the conductor ball, and the conductor block, the slider is reset. Through cyclic operation, the gas pushes the gas permeation membrane to vibrate, causing the powder adhering or accumulated on the gas permeation membrane to fall off, thereby avoiding the long-term accumulation of powder on the side wall of the conical cylinder.

[0015] 2. The spray drying equipment for plant pesticide production provided in this application, when gas enters between the gas permeation membrane and the conical cylinder, causing the gas permeation membrane to vibrate, the gas between the conical cylinder and the gas permeation membrane also permeates through the gas permeation membrane into the conical cylinder and the cylinder body, causing an upward airflow in the conical cylinder and the cylinder body, which counteracts part of the spiral downward hot airflow, making the droplets stay in the cylinder body and the conical cylinder for a longer time, thereby prolonging the drying time of the droplets.

[0016] 3. The spray drying equipment for producing plant pesticides provided in this application comprises a series of grooves arranged in a ring on the side wall of the cylinder. Support springs are installed within the grooves, and adjacent support springs generate repulsive forces. Flexible vibrating rods are positioned between the support springs. Several coils are fixedly installed on the inner wall of the grooves. When the conical cylinder rotates, the electromagnetic block rotates with it. When the electromagnetic block passes through the grooved section of the cylinder, it generates a repulsive force against the lowest permanent magnet block, causing the lowest permanent magnet block to move upwards along the groove. During this upward movement, the adjacent permanent magnets... The magnetic blocks generate a repulsive force, which pushes the adjacent permanent magnet blocks upward. After the electromagnetic block continues to rotate to the part of the cylinder without the sliding groove, the permanent magnet block slides down under the action of gravity. The permanent magnet block reciprocates in the sliding groove, which causes the coil to generate current. Under the action of the coil resistance, the coil heats up and generates a certain amount of heat, which reduces the heat leakage from the side wall of the cylinder and prevents water vapor in the cylinder from condensing after contacting the side wall of the cylinder. In addition, when the permanent magnet block slides, it hits the flexible vibrating rod, which causes the flexible vibrating rod to drive the side wall of the cylinder to vibrate, causing the powder on the side wall to fall into the cylinder and preventing the powder from sticking to the side wall of the cylinder. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0018] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0019] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged view of the local structure at point A;

[0021] Figure 3 This is a schematic diagram of the internal structure of the conical cylinder in Embodiment 1 of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of the local structure at point B;

[0024] Figure 6 This is a schematic diagram of the conical cylinder and its internal structure in Embodiment 2 of the present invention.

[0025] In the diagram: 1. Support; 2. Cylinder; 201. Retaining ring; 202. Conductor block; 203. Slide groove; 204. Support spring; 205. Permanent magnet block; 206. Coil; 207. Flexible vibrating rod; 3. Feed pipe; 4. Bearing; 5. Feeding bucket; 6. Conical cylinder; 601. Mounting groove; 602. Electromagnetic block; 603. Slider; 604. Vent hole; 605. One-way valve; 606. Conductor ball; 607. Support ring; 608. Gas permeation membrane; 609. Gear ring; 7. Power gear; 8. Power motor; 9. Sealing plate; 10. Centrifugal atomizer; 11. Heating box; 12. Cyclone separator. Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Example

[0027] Please see Figure 1 , Figure 2 and Figure 3A spray drying device for producing plant insecticides includes a support frame 1, a cylinder 2, and a feed pipe 3. The cylinder 2 is fixedly installed at the top of the support frame 1, and a retaining ring 201 is fixedly installed at the bottom of the inner wall of the cylinder 2. The feed pipe 3 is fixedly installed in the middle of the support frame 1, and the feed pipe 3 is used for airflow and the flow of dried powder. A collection bucket 5 is fixedly installed at the bottom of the feed pipe 3 for collecting the dried powder. A bearing 4 is fixedly sleeved on the outside of the feed pipe 3, and the bearing 4 is located on the upper side of the support frame 1. A conical cylinder 6 is movably installed inside the cylinder 2. The edge of the bottom of the conical cylinder 6 overlaps with the upper end of the retaining ring 201. The inner wall of the center of the conical cylinder 6 is fixedly sleeved on the outside of the bearing 4. The conical cylinder 6 is sealed to the inner wall of the cylinder 2 and is movably installed. The conical cylinder 6 has an annular array of open... A plurality of mounting slots 601 are provided, and a plurality of electromagnetic blocks 602 are installed equidistantly in the mounting slots 601. One electromagnetic block 602 is in close contact with the side wall of the cylinder 2. A slider 603 is slidably mounted between adjacent electromagnetic blocks 602. When the electromagnetic block 602 is energized, it provides a repulsive force with the slider 603, which counteracts the centrifugal force of the slider 603 and causes the slider 603 to return to its original position. A vent hole 604 is provided on the side wall of the mounting slot 601 at the upper end of the electromagnetic block 602, which connects the mounting slot 601 to the outside. Two one-way valves 605 are fixedly installed on the side wall of the mounting slot 601 at the lower end of the electromagnetic block 602. One one-way valve 605 connects the mounting slot 601 to the outside at the bottom of the conical cylinder 6, and the other one-way valve 605 connects the mounting slot 601 to the inside of the conical cylinder 6. The conical cylinder 6, which is closely connected to the side wall of the cylinder 2, has embedded conductive balls 606. The conductive balls 606 are electrically connected to the electromagnetic blocks 602 in the same mounting groove 601. Conductor blocks 202 are embedded in a ring array on the inner wall of the cylinder 2. The conductor blocks 202 are insulated from the cylinder 2. The conductive balls 606 and conductor blocks 202 make rolling contact. When the conductive balls 606 and conductor blocks 202 are in contact, current flows through the electromagnetic blocks 602. A support ring 607 is fixedly installed on the side wall of the cylinder 2. The bottom end of the support ring 607 is closely attached to the upper end of the conical cylinder 6. A gas permeation membrane 608 is provided at the upper end of the conical cylinder 6. One end of the gas permeation membrane 608 is fixedly installed at the top of the support ring 607, and the other end of the gas permeation membrane 608 is fixedly installed at the upper end of the feed pipe 3. A gear ring 609 is fixedly installed at the middle position of the outer wall of the conical cylinder 6. A power motor 8 is fixedly installed on one side of the upper end of the support 1. A power gear 7 is fixedly sleeved on the main shaft of the power motor 8. The power gear 7 meshes with the gear ring 609 for transmission. The power motor 8 drives the power gear 7 to rotate, thereby driving the power gear 7 and the gear ring 609 to rotate the conical cylinder 6. A sealing plate 9 is fixedly installed at the top of the cylinder 2. A centrifugal atomizer 10 is fixedly installed at the middle position of the sealing plate 9. The centrifugal atomizer 10 is used to centrifuge and atomize the raw materials. A heating box 11 is fixedly installed on one side of the cylinder 2. The heating box 11 is connected to the ventilation pipe of the sealing plate 9 through a pipe. The heating box 11 is used to provide hot airflow for drying. A cyclone separator 12 is fixedly installed on one side of the support 1.A material container 5 is fixedly installed at the bottom of the cyclone separator 12. The air inlet of the cyclone separator 12 is connected to the material passage pipe 3 through a pipe. The cyclone separator 12 is used to separate the airflow from the dried powder.

[0028] The slider 603 is a permanent magnet. When the electromagnetic block 602 is energized, the bottom end of the electromagnetic block 602 generates a magnetic force that repels the top end of the slider 603, so that the slider 603 can return to its original position under the action of the electromagnetic block 602, ensuring that the electromagnetic block 602 can continuously slide back and forth.

[0029] The flow direction of the one-way valve 605 inside the conical cylinder 6 is from inside the mounting groove 601 to between the conical cylinder 6 and the gas permeation membrane 608; the flow direction of the one-way valve 605 outside the conical cylinder 6 is from outside the mounting groove 601 to inside the mounting groove 601. During the reciprocating operation of the slider 603, the gas compressed by the slider 603 is ensured to enter between the conical cylinder 6 and the gas permeation membrane 608, and new gas is replenished when the slider 603 resets.

[0030] The working principle of Embodiment 1 of the present invention is as follows:

[0031] Please see Figure 1 , Figure 2 and Figure 3During operation of the centrifugal spray dryer, the raw material is atomized by the centrifugal atomizer 10 and enters the cylinder 2 from the atomizing nozzle of the centrifugal atomizer 10. Hot air heated by the heating box 11 enters the cylinder 2 from the top. The droplets are dried by the hot air flow and become powder. The powder particles fall onto the upper side of the gas permeation membrane 608. Simultaneously, the power motor 8 is started. The power motor 8 drives the conical cylinder 6 to rotate via the power gear 7 and gear ring 609. When the conical cylinder 6 rotates, the slider 603 inside the conical cylinder 6 generates centrifugal force. Under the action of centrifugal force, the slider 603 slides along the mounting groove 601 towards the side wall of the cylinder 2. During this process, the sliding slider 603 compresses the gas in the mounting groove 601, causing the gas in the mounting groove 601 to enter between the conical cylinder 6 and the gas permeation membrane 608 through the one-way valve 605 on the inner wall of the conical cylinder 6. As the conical cylinder 6 continues to rotate, the conductor ball 606 of the conical cylinder 6 contacts the conductor block 202 on the inner wall of the cylinder 2. At this time... When the electromagnetic block 602 is energized, it generates a repulsive force against the slider 603. The repulsive force of the electromagnetic block 602 on the slider 603 is greater than the centrifugal force generated by the slider 603 itself, causing the slider 603 to slide along the mounting groove 601 towards the feed pipe 3, thereby resetting the slider 603. During the resetting process of the slider 603, gas is introduced through the one-way valve 605 on the outer wall of the conical cylinder 6. As the conical cylinder 6 rotates, the slider 603 slides cyclically, so that the gas in the mounting groove 601 continuously enters between the conical cylinder 6 and the gas permeation membrane 608. When the gas enters between the conical cylinder 6 and the gas permeation membrane 608, the airflow through the gas permeation membrane 608 is relatively slow, and the airflow generated by the gas impacts the gas permeation membrane 608, causing the gas permeation membrane 608 to vibrate. Through the vibration of the gas permeation membrane 608 itself, the powder that is stuck or accumulated on the gas permeation membrane 608 is shaken off, thereby preventing the powder from sticking or accumulating on the side wall of the conical cylinder 6 for a long time.

[0032] Furthermore, when gas enters between the gas permeation membrane 608 and the conical cylinder 6, causing the gas permeation membrane 608 to vibrate, the gas between the conical cylinder 6 and the gas permeation membrane 608 also permeates through the gas permeation membrane 608 into the conical cylinder 6 and the cylinder body 2, generating an upward airflow inside the conical cylinder 6 and the cylinder body 2. This counteracts part of the spiral downward hot airflow, allowing the droplets to float in the cylinder body 2 and the conical cylinder 6 for a longer period, thereby extending the drying time of the droplets. Example

[0033] Example 2 is a further improvement based on Example 1.

[0034] Unlike Example 1, please refer to Figure 4 , Figure 5 and Figure 6The inner wall of the cylinder 2 has several grooves 203 arranged in a ring array. The bottom end of the side wall of the groove 203 is connected to the mounting groove 601. A support spring 204 is fixedly installed at the bottom end of the groove 203. Several permanent magnet blocks 205 are slidably installed in the same groove 203. The permanent magnet blocks 205 are located above the support springs 204. Adjacent permanent magnet blocks 205 generate repulsive magnetic forces. Several coils 206 are embedded in the side wall of the groove 203. The coils 206 have a large resistance. When the permanent magnet block 205 slides inside the coil 206, the coil 206 generates current, and the current is converted into heat energy under the action of the resistance of the coil 206, providing heat to the cylinder 2. A flexible vibration rod 207 is fixedly installed on the side wall of the slide groove 203. The flexible vibration rod 207 is located between two adjacent permanent magnet blocks 205. When the permanent magnet block 205 slides back and forth in the slide groove 203, the permanent magnet block 205 hits the flexible vibration rod 207, causing the flexible vibration rod 207 to vibrate.

[0035] The flexible vibrating rod 207 is a rod that can generate a certain degree of elasticity. When the flexible vibrating rod 207 is impacted, it can generate a certain amplitude of vibration, which shakes off the powder adhering to the inner wall of the cylinder 2.

[0036] The permanent magnet block 205 at the lowest end of the slide 203 is sealed to the inner wall of the slide 203, and the permanent magnet block 205 and the slide 203 can slide relative to each other. This ensures that the powder in the cylinder 2 will not enter the slide 203 and affect the sliding of the permanent magnet block 205.

[0037] The working principle of Embodiment 2 of the present invention is as follows:

[0038] Please see Figure 4 , Figure 5 and Figure 6When the centrifugal spray dryer is operating, the power motor 8 drives the conical cylinder 6 to rotate via the power gear 7 and gear ring 609. As the conical cylinder 6 rotates, the conductor balls 606 on the conical cylinder 6 contact the conductor block 202, energizing the electromagnetic block 602. The outermost electromagnetic block 602 in the mounting groove 601 generates a repulsive force against the permanent magnet block 205 at the lowest end of the sliding groove 203. Since the electromagnetic block 602 is fixedly installed in the mounting groove 601, and the permanent magnet block 205 is slidably installed in the sliding groove 203, the lowest permanent magnet block 205 slides upwards under the repulsive force of the electromagnetic block 602. During this upward sliding process, the lowest permanent magnet block 205... The magnetic block 205 generates a repulsive force with the adjacent permanent magnet block 205, pushing the adjacent permanent magnet block 205 to slide upwards, thereby causing the permanent magnet blocks 205 in the slide groove 203 to slide upwards as a whole. When the conical cylinder 6 continues to rotate, and the electromagnetic block 602 can no longer generate a repulsive force with the lowest permanent magnet block 205, the permanent magnet block 205 slides down and returns to its original position under the action of its own gravity and the repulsive force between them. During this process, the sliding permanent magnet block 205 passes through the coil 206, causing the coil 206 to generate current. Under the action of the resistance of the coil 206, the coil 206 generates a certain amount of heat, which reduces the heat leaking from the side wall of the cylinder 2 and prevents water vapor in the cylinder 2 from condensing after contacting the side wall of the cylinder 2.

[0039] Furthermore, the upward sliding permanent magnet block 205 impacts the flexible vibrating rod 207, causing the flexible vibrating rod 207 to vibrate. The vibrating flexible vibrating rod 207 drives the side wall of the cylinder 2 to vibrate to a certain extent, causing the powder adhering to the side wall of the cylinder 2 to fall into the cylinder, preventing the powder from sticking to the side wall of the cylinder 2.

[0040] The processing technology of this invention is as follows:

[0041] S1. Start the power motor 8, centrifugal atomizer 10 and heating box 11. The power motor 8 drives the conical cylinder 6 to rotate through the power gear 7 and gear ring 609. The centrifugal atomizer 10 atomizes the raw material into droplets. The droplets enter the cylinder 2 through the atomizing nozzle. At the same time, the airflow heated by the heating box 11 enters the cylinder 2.

[0042] S2. The droplets are dried by hot airflow inside the cylinder 2, and the dried powder falls onto the upper side of the gas permeation membrane 608.

[0043] S3. As the conical cylinder 6 rotates, the slider 603 inside the conical cylinder 6 generates centrifugal force. The slider 603 squeezes the gas in the mounting groove 601, causing the gas in the mounting groove 601 to enter between the conical cylinder 6 and the gas permeation membrane 608 through the one-way valve 605 on the inner side of the conical cylinder 6. The airflow impacts the gas permeation membrane 608, causing the gas permeation membrane 608 to shake, thereby shaking off the powder that is stuck or accumulated on the gas permeation membrane 608.

[0044] S4. When the conical cylinder 6 rotates, the conductor ball 606 of the conical cylinder 6 contacts the conductor block 202, causing the electromagnetic block 602 to generate magnetic force. The electromagnetic block 602 generates a repulsive force on the slider 603, causing the slider 603 to reset. At the same time, the electromagnetic block 602 generates a repulsive force with the lowest permanent magnet block 205, pushing the permanent magnet block 205 to slide upward in the slide groove 203. The permanent magnet block 205 also slides downward under the action of gravity and the repulsive force of the adjacent permanent magnet block 205. When the permanent magnet block 205 slides up and down, the permanent magnet block 205 passes through the coil 206, and the coil 206 generates current. Under the action of the resistance of the coil 206, a certain amount of heat is generated, which reduces the heat leakage from the side wall of the cylinder 2. In addition, the permanent magnet block 205 hits the flexible vibrating rod 207, causing the flexible vibrating rod 207 to vibrate. The vibrating flexible vibrating rod 207 drives the side wall of the cylinder 2 to vibrate to a certain extent, causing the powder adhering to the side wall of the cylinder 2 to fall into the cylinder.

[0045] S5. The dried powder passes through the feed pipe 3. Part of the powder enters the container 5 at the lower end of the feed pipe 3, while the other part of the powder and airflow enter the cyclone separator 12 through the pipe.

[0046] S6. The powder and airflow entering the cyclone separator 12 are separated by the cyclone separator 12. The powder enters the material container 5 at the bottom of the cyclone separator 12, and the airflow flows out through the air outlet of the cyclone separator 12.

Claims

1. A spray drying device for producing plant insecticides, comprising a support frame (1) and a cylinder (2), characterized in that: A feed pipe (3) is fixedly installed in the middle of the support (1). A bearing (4) is fixedly sleeved on the outside of the feed pipe (3). A retaining ring (201) is fixedly installed at the bottom of the inner wall of the cylinder (2). A conical cylinder (6) overlaps the retaining ring (201). The inner wall of the conical cylinder (6) is fixedly sleeved on the outside of the bearing (4). Several mounting slots (601) are arranged in a ring array inside the conical cylinder (6). Several electromagnetic blocks (602) are installed at equal intervals in the mounting slots (601). A slider (603) is slidably installed between the electromagnetic blocks (602). A vent hole (604) is opened on the side wall of the mounting slot (601) at the upper end of the electromagnetic block (602). Two one-way valves (605) are fixedly installed on the side wall of the mounting slot (601) at the lower end of the electromagnetic block (602). The two one-way valves (605) are respectively connected to the inner and outer sides of the conical cylinder (6). The side wall of the conical cylinder (6) is embedded with a conductor ball (606). The conductor ball (606) is electrically connected to the electromagnetic block (602). The inner wall of the cylinder (2) is embedded with a conductor block (202) in an annular array. The conductor ball (606) and the conductor block (202) are in rolling contact. A support ring (607) is fixedly installed on the side wall of the cylinder (2). A gas permeation membrane (608) is fixedly installed on the upper end of the support ring (607) and the upper end of the feed pipe (3). A toothed ring (609) is fixedly installed on the outer wall of the conical cylinder (6). A power motor (8) is fixedly installed on the upper end of the bracket (1). The power motor (8) meshes with the toothed ring (609) through a power gear (7). The slider (603) is a permanent magnet. When the electromagnetic block (602) is energized, the bottom of the electromagnetic block (602) generates a magnetic force that repels the top of the slider (603).

2. The spray drying equipment for producing plant insecticides according to claim 1, characterized in that, The flow direction of the one-way valve (605) inside the conical cylinder (6) is from inside the mounting groove (601) to between the conical cylinder (6) and the gas permeation membrane (608); the flow direction of the one-way valve (605) outside the conical cylinder (6) is from outside the mounting groove (601) to inside the mounting groove (601).

3. The spray drying equipment for producing plant insecticides according to claim 1, characterized in that, The inner wall of the cylinder (2) is provided with a number of sliding grooves (203) arranged in a ring. The bottom end of the side wall of the sliding groove (203) is connected to the mounting groove (601). A support spring (204) is fixedly installed at the bottom end of the sliding groove (203). A number of permanent magnet blocks (205) are slidably installed in the same sliding groove (203). The permanent magnet blocks (205) are located at the upper end of the support spring (204). Adjacent permanent magnet blocks (205) generate repulsive magnetic forces. A number of coils (206) are embedded in the side wall of the sliding groove (203).

4. The spray drying equipment for producing plant insecticides according to claim 3, characterized in that, A flexible vibration rod (207) is fixedly installed on the side wall of the slide (203), and the flexible vibration rod (207) is located between two adjacent permanent magnet blocks (205).

5. The spray drying equipment for producing plant insecticides according to claim 4, characterized in that, The flexible vibration rod (207) is a rod that can generate a certain degree of elasticity.

6. The processing technology of a spray drying equipment for producing plant insecticides according to claim 5, characterized in that, Spray drying includes the following steps: S1. While the conical cylinder (6) rotates, the slider (603) inside the conical cylinder (6) generates centrifugal force. The slider (603) squeezes the gas in the mounting groove (601), causing the gas in the mounting groove (601) to enter between the conical cylinder (6) and the gas permeation membrane (608) through the one-way valve (605) inside the conical cylinder (6). The airflow impacts the gas permeation membrane (608), causing the gas permeation membrane (608) to shake, thereby shaking off the powder that is stuck or accumulated on the gas permeation membrane (608). S2. When the conical cylinder (6) rotates, the conductor ball (606) of the conical cylinder (6) contacts the conductor block (202), causing the electromagnetic block (602) to generate magnetic force. The electromagnetic block (602) generates a repulsive force on the slider (603), causing the slider (603) to reset. At the same time, the electromagnetic block (602) generates a repulsive force with the lowest permanent magnet block (205), pushing the permanent magnet block (205) to slide upward in the groove (203). The permanent magnet block (205) also slides downward under the action of gravity and the repulsive force of the adjacent permanent magnet block (205). When the permanent magnet block (205) slides up and down, the permanent magnet block (205) passes through the coil (206), and the coil (206) generates current. Under the action of the resistance of the coil (206), a certain amount of heat is generated, which reduces the heat leakage from the side wall of the cylinder (2). In addition, the permanent magnet block (205) hits the flexible vibrating rod (207), causing the flexible vibrating rod (207) to vibrate. The vibrating flexible vibrating rod (207) drives the side wall of the cylinder (2) to vibrate to a certain extent, causing the powder adhering to the side wall of the cylinder (2) to fall into the cylinder.

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