A dust removal device for grain and oil processing

Abstract

This invention relates to the field of grain processing technology and discloses a dust removal device for grain and oil processing, comprising a screening mechanism, a screw conveyor, a cyclone separator, and a dust removal mechanism connected in sequence. The screening mechanism includes a vibrating screening component, which includes a screen and an air oscillation component installed at its bottom. It also includes a screening dust outlet and a dust extraction fan. The air inlet of the dust extraction fan is connected to the screening dust outlet, and the air outlet of the dust extraction fan is connected to the dust removal mechanism through a set air duct. The feed inlet of the screw conveyor is connected to the screening discharge outlet, and the discharge outlet of the screw conveyor is connected to the cyclone separator. The cyclone dust outlet pipe of the cyclone separator is connected to the dust removal mechanism. This invention uses a pneumatic screening mechanism to first remove impurities from grain and oil raw materials, and at the same time, uses the exhaust gas discharged during vibration to initially separate dust from the seeds. Then, the cyclone separator performs dust removal again, thereby achieving dust removal during the screening of raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of grain processing, in particular to a dust removal device for grain and oil processing. Background Art

[0002] The organic matter content of smoke and dust in the processing of grain and oil raw materials is high, which is prone to explosion and other accidents. Publication No. CN112845010A discloses an explosion-proof dust removal device for grain production and processing, specifically an explosion-proof dust removal device for grain production and processing, including a box body, a dust collection box is fixedly arranged on the upper part of the box body, a feed inlet is opened on the upper part of the box body, a screening component for filtering grain and a dust suction component for collecting grain dust into the dust collection box are arranged inside the box body; the screening component includes a partition net distributed in an annular shape and two groups of bases hinged at the bottom of the partition net, the two groups of the bases can rotate along the bottom of the partition net and form a conical structure with an opening upward with the partition net. The embodiment of the present invention The utility model has the advantages of simple structure, easy use and good dust removal effect. The dust generated in the grain screening process is absorbed by the dust suction component to avoid excessive dust accumulation inside the box, which then leads to increased dust concentration, eliminates the potential threat of dust explosion, and improves the safety of the grain processing process; however, during the operation of this application, the dust in the box cavity will pass through the partition net into the grain storage area and the area above the dust collection hood, so that the dust removal equipment of this application does not have the function of independent dust collection. If secondary suspension occurs, the first dust removal will be meaningless, so that the dust concentration in the box is still high, and there is still a potential risk of explosion. Therefore, a new dust removal system is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a dust removal device for grain and oil processing which first removes impurities from grains or oil seeds through a pneumatic screening mechanism, and at the same time preliminarily separates dust from the seeds through the exhaust gas discharged during vibration, and then performs dust removal again through a cyclone separator, thereby realizing dust removal operations on grain and oil during processing, thereby solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dust removal device for grain and oil processing, comprising a screening mechanism, a screw conveyor, a cyclone separator and a dust removal mechanism connected in sequence, the screening mechanism comprising a vibrating screening component, the vibrating screening component comprising a screen and an air oscillation component, and also comprising a screening dust outlet and a screening discharge port, and also comprising a dust exhaust fan, the air inlet of the dust exhaust fan is connected to the screening dust outlet, the air outlet of the dust exhaust fan is connected to the dust removal mechanism through an air duct, the feed inlet of the screw conveyor is connected to the screening discharge port, the discharge port of the screw conveyor is connected to the cyclone separator, and the cyclone dust outlet pipe of the cyclone separator is connected to the dust removal mechanism.

[0005] Furthermore, the screening mechanism includes screening support legs, which are screwed together by multiple vertical connecting rods, and a shock absorber is provided at the top of the screening support legs; it also includes a screening box, which is arranged at the top of the shock absorber, and an air pump is provided on the lower end surface of the screening box; a screening feed port connecting the inside and the outside is opened at the top of the screening box, and the screening box includes an outer shell, which includes a box cover and a U-shaped box body, the box cover and the box body are connected by a detachable sealing connection, and also includes a screening outlet, which is arranged between the screening dust outlet and the screening outlet.

[0006] Furthermore, the screening box also includes a vibrating screen assembly arranged in the box body, the vibrating screen assembly includes a screen, there are multiple screens and they are arranged in parallel along the plumb direction, the angle between the screen and the horizontal plane is 30-60 degrees, the screens are respectively a lower screen, a middle screen and an upper screen from bottom to top, a support is provided on each screen near the screening feed port end along the length direction, screen frames are installed on both sides of each screen, the screen includes a screen plate and an air oscillation assembly, the air oscillation assembly is arranged on the lower end surface of the screen plate, the air oscillation assembly is connected to the air pump, and an oscillation support plate is installed at the lower end of the air oscillation assembly.

[0007] Furthermore, the air oscillation component includes a damping rod, a piston is provided at the top of the damping rod, and a return spring is provided on the outside of the damping rod; it also includes a sliding sleeve, which is coaxially arranged with the damping rod, the inner diameter of the sliding sleeve is the same as the outer diameter of the piston, the sliding sleeve and the piston are slidably matched, the return spring is arranged between the sliding sleeve and the oscillation support plate, and a sealing sleeve is provided at the top of the sliding sleeve; it also includes an air supply pipe, which is spiral, one end of the air supply pipe is connected to the air pump, the cavity between the sliding sleeve and the sealing sleeve is a sliding cavity, and one end of the air supply pipe is connected to the sliding cavity; it also includes a vibration rod, which is arranged at the top of the sealing sleeve, the top of the vibration rod is fixedly connected to the screen plate, the vibration rod is hollow, and the hollow cavity of the vibration rod is the air supply cavity; an exhaust port connected to the vibration rod is opened at the top of the screen plate, and an electromagnetic valve is provided in the cavity inside the vibration rod.

[0008] Furthermore, a powerful fan is provided at the top of the screw conveyor, and the air outlet of the powerful fan is connected to the cyclone dust exhaust pipe. A nitrogen generator is provided on one side of the cyclone separator, and a buffer tank is also included. The cyclone separator includes a cylindrical body, a cyclone feed pipe is provided on the outside of the cylindrical body, a partition is provided in the middle of the cyclone feed pipe to divide the pipeline into a nitrogen pipeline and a material pipeline, the air outlet of the buffer tank is connected to the nitrogen pipeline, and also includes an inner rotating cylinder body, the inner rotating cylinder body is coaxially arranged with the cylindrical body, a conical cylinder is provided at the bottom end of the cylindrical body, and a collection box is provided at the bottom end of the conical cylinder.

[0009] Furthermore, the outer diameter of the inner rotating cylinder is smaller than the inner diameter of the cylindrical body, the inner rotating cylinder is fixedly connected to the top of the cylindrical body by a flange, the area between the cylindrical body and the inner rotating cylinder constitutes a nitrogen inlet chamber, and a plurality of air holes connecting the inside and the outside are provided on the outer wall surface of the inner rotating cylinder, the cross-section of the air holes is wedge-shaped and the width gradually increases in the radial outward direction.

[0010] Furthermore, a magnetic suspension shaft is provided at the top of the inner rotating cylinder body, and the magnetic suspension shaft includes a permanent magnetic limit sleeve arranged on the outside of the cyclone dust outlet pipe, and the permanent magnetic limit sleeve is in an I-shaped shape, including a fixed cylinder, and the fixed cylinder is fixedly connected to the cyclone dust outlet pipe. Limit plate rings are provided at the upper and lower ends of the fixed cylinder, and permanent magnets are provided on the opposite surfaces of the limit plate rings. A permanent magnet is provided on the outer side surface of the fixed cylinder, and it also includes a rotating plate ring, and an electromagnet is provided on the inner side surface of the rotating plate ring; it also includes a rotating shell, which is arranged at the lower end of the rotating plate ring, and the rotating shell The outer diameter is smaller than the inner diameter of the cylinder. An air sealing pad is arranged on the outer side of the rotating shell near the end of the rotating plate ring. The air sealing pad is connected to the rotating shell. A plurality of nitrogen inlet cavities are arranged on the outer side of the rotating plate ring. The nitrogen inlet cavities extend downward into the rotating shell. A plurality of collision plates are arranged on the inner side of the rotating shell. The collision plates are polyhedral. One end of the collision plate is a collision surface. The other end of the collision plate is a push flow plate. A vent is arranged on the end of the push flow plate. The nitrogen inlet cavity is connected to the vent. The angle between the push flow plate and the collision surface is 20-50 degrees.

[0011] Furthermore, the dust removal mechanism includes a spray tower shell, an exhaust gas outlet is provided at the top of the spray tower shell, a dust-containing gas inlet is provided on the outside of the spray tower shell close to the ground, and a maintenance port is provided on the outside of the spray tower shell away from the dust-containing gas inlet; it also includes a plurality of high-efficiency sprayers, the high-efficiency sprayers are arranged inside the spray tower shell, the spray tower shell and the high-efficiency sprayers are coaxially arranged, a demisting device is provided between the exhaust gas outlet and the high-efficiency sprayer, a separation filter is provided at the top of the high-efficiency sprayer, and an air intake assembly connected to the dust-containing gas inlet is also provided in the spray tower shell; it also includes a water tank, which is connected to the high-efficiency sprayer and the air intake assembly inside the spray tower shell through a circulating pump.

[0012] Furthermore, the air intake assembly is composed of a plurality of gas-liquid premixing tubes arranged side by side, each gas-liquid premixing tube includes a premixing tube body, the premixing tube body is cylindrical, a premixing assembly is provided in the middle of the premixing tube body, the premixing assembly divides the premixing tube body into two upper and lower tube cavities, the upper tube cavity constitutes a diffusion tube cavity, and the lower tube cavity constitutes a liquid inlet tube cavity, the cross-sections of the diffusion tube cavity and the liquid inlet tube cavity are both parabolic, an annular air induction ring is provided on the outside of the premixing tube body, the hollow tube cavity inside the air induction ring constitutes a receiving chamber, and a smoke gas intake pipe is provided on the outside of the air induction ring; it also includes an expansion chamber, the expansion chamber is provided on the outer side of the liquid inlet tube cavity, a plurality of connecting tubes are provided in the premixing tube body, the connecting tubes are arranged in a radial direction, and the connecting tubes connect the receiving chamber with the expansion chamber.

[0013] Furthermore, the air intake assembly also includes an installation support rod, which is coaxially arranged with the premixing tube body, and a plurality of spaced connecting rods are provided at the top of the installation support rod, and the connecting rods are arranged at equal intervals along the circumferential direction of the outer side of the installation support rod, and the cavity between the connecting rod and the installation support rod and the premixing assembly constitutes a liquid inlet chamber, and the premixing assembly is installed at the top of the connecting rod. The premixing assembly includes a liquid inlet chamber shell, which is barrel-shaped, and a plurality of injection nozzles connecting the inside and the outside are provided on the outer side of the liquid inlet chamber shell. It also includes a metal atomization grid baffle ring, which is cylindrical, and the atomization grid baffle ring and the liquid inlet chamber shell are coaxially arranged with the premixing tube body, and a plurality of discharge tips are provided on the outer side of the atomization grid baffle ring, and the atomization grid baffle ring is connected to an external power supply through a cable, and also includes an electromagnet, which is arranged in the premixing tube body and coaxial with the atomization grid baffle ring, and the electromagnet and the atomization grid baffle ring have the same height in the plumb direction.

[0014] The present invention has the following beneficial effects over the prior art:

[0015] 1. The air pump is used to deliver gas to the inner cavity of the sliding sleeve of the air oscillation component. The high-pressure gas lifts the sealing sleeve upward, so that the sliding sleeve moves upward with the sealing sleeve, and then the solenoid valve in the air delivery cavity is opened. Since an exhaust port connected to the vibration rod is provided at the top of the screen plate, the gas in the sliding cavity is discharged through the exhaust port and the dust in the raw material is blown up, so that the screen formed by the screen plate vibrates in the up and down directions. At the same time, the dust in the raw material is blown up by the discharged gas, which reduces the accumulation of dust in the screening box and prevents the dust from adhering to the surface of the grain and oil raw materials.

[0016] 2. Nitrogen is introduced into the nitrogen inlet cavity along the nitrogen pipeline, and then sent into the collision plate through the nitrogen inlet tube cavity on the rotating shell, and then ejected outward at high speed through the vent hole. Under the interaction of forces, the rotating shell is driven to rotate, and the raw materials are sent into the inner rotating cylinder through the material pipeline and rotate along its inner wall surface. At the same time, the rotating shell of the inner rotating cylinder rotates and the rotation direction is opposite to the movement direction of the raw materials, so that the relative speed between the raw materials and the collision plate is increased, which makes it easier to crush the tiny particles mixed in the materials and shake off the dust attached to the surface of the raw materials. At the same time, the nitrogen ejected from the vent hole blows away the dust on the collision surface of other collision plates.

[0017] 3. The dust-containing gas is sent into the air intake assembly through the dust-containing gas inlet, and then into the expansion chamber through the connecting pipe, and finally into the premixing assembly. At the same time, the circulating pump sends the clean water in the water tank into the liquid inlet chamber of the air intake assembly, and then the clean water is atomized under the action of the atomizing grid baffle ring to facilitate the combination with the dust in the dust-containing gas. Then, the atomizing grid baffle ring is energized and discharged at the tip of the outer side of the atomizing grid baffle ring, so that the droplets are charged, which enhances the adsorption capacity of the droplets for dust while reducing the possibility of explosion of the dust-containing gas. At the same time, a high-frequency changing electromagnetic field is generated by an electromagnet, so that the temperature of the metal atomizing grid baffle ring increases, and the temperature of the droplets is increased to prevent the phenomenon of ice blocking the air intake assembly due to the low temperature of the clean water in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the dust removal equipment of the present invention;

[0019] Figure 2 It is an axonometric diagram of the screening mechanism of the present invention;

[0020] Figure 3 It is a schematic diagram of the screening box of the present invention;

[0021] Figure 4 For the present invention Figure 3 AA schematic diagram;

[0022] Figure 5 It is an axonometric view of the air oscillation assembly of the present invention;

[0023] Figure 6 For the present invention Figure 5 BB schematic diagram;

[0024] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of part A;

[0025] Figure 8 This is an axonometric diagram of a cyclone separator of the present invention;

[0026] Fig. 9 It is an axonometric view of a cylindrical body of a cyclone separator of the present invention;

[0027] Fig.10 For the present invention Fig. 9 Schematic diagram of CC;

[0028] Fig.11 It is a cross-sectional view of the inner rotating cylinder of the present invention;

[0029] Fig.12 This is an axonometric view of the collision plate of the present invention;

[0030] Fig.13This is a southwest schematic diagram of the collision plate of the present invention;

[0031] Fig.14 This is an axonometric diagram of the dust removal mechanism of the present invention;

[0032] Fig.15 This is a front view of the dust removal mechanism of the present invention;

[0033] Fig.16 For the present invention Fig.15 DD schematic diagram;

[0034] Fig.17 It is a schematic diagram of the air intake assembly of the present invention;

[0035] Fig.18 A top view of the air intake assembly of the present invention;

[0036] Fig.19 For the present invention Fig.18 EE schematic diagram;

[0037] Fig. 20 For the present invention Fig.19 A partial enlarged schematic diagram of part B;

[0038] Fig.21 For the present invention Fig.19 Axonometric diagram of .

[0039] In the figure: 1, screening mechanism; 101, screening dust outlet; 102, screening outlet; 103, screening support leg; 104, screening feed inlet; 105, shock absorber; 106, screening box; 107, air pump; 108, box body; 109, vibrating screen assembly; 110, screen; 111, screen frame; 112, air oscillation assembly; 113, support; 114, oscillation support plate; 115, exhaust port; 116, vibration rod; 117, sealing sleeve; 118, air delivery cavity; 119, solenoid valve; 120, air delivery pipe; 121, damping rod; 122, piston; 123, sliding sleeve; 124, return spring; 125, screen plate; 2, dust extraction fan; 3, screw conveyor; 4, powerful fan; 5, cyclone separator; 501, cyclone dust discharge pipe; 502, cylinder; 503, collection box; 504, nitrogen generator; 505, buffer tank; 506, conical cylinder; 507, material pipeline; 50 8. Nitrogen pipeline; 509. Cyclone feed pipe; 510. Inner rotating cylinder; 511. Nitrogen inlet cavity; 512. Vent hole; 513. Permanent magnetic limit sleeve; 514. Fixed cylinder; 515. Limit plate ring; 516. Rotating plate ring; 517. Rotating shell; 518. Collision plate; 519. Collision surface; 520. Push flow plate; 6. Dust removal mechanism; 601. Spray tower shell; 602. Dust-containing gas inlet; 603. Water storage tank; 604. Maintenance port; 605. Exhaust outlet; 606. Demisting device; 607. High-efficiency sprayer; 608. Air intake assembly; 609. Smoke gas intake pipe; 610. Premixing pipe body; 611. Diffusion tube cavity; 612. Air entrainment ring; 613. Receiving chamber; 614. Connecting pipe; 615. Liquid inlet tube cavity; 616. Mounting support rod; 617. Electromagnet; 618. Expansion chamber; 619. Liquid inlet cavity; 620. Liquid inlet cavity shell; 621. Atomizing grid retaining ring. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In one embodiment, Figure 1 As shown, a dust removal device for grain and oil processing includes a screening mechanism 1, a screw conveyor 3, a cyclone separator 5 and a dust removal mechanism 6 which are connected in sequence, the screening mechanism 1 includes a screening dust outlet 101 and a screening discharge port 102, and also includes a dust extraction fan 2, the air inlet of the dust extraction fan 2 is connected to the screening dust outlet 101, the air outlet of the dust extraction fan 2 is connected to the dust removal mechanism 6 through an arranged air duct, the feed port of the screw conveyor 3 is connected to the screening discharge port 102, the discharge port of the screw conveyor 3 is connected to the cyclone separator 5, and the cyclone dust outlet pipe 501 of the cyclone separator 5 is connected to the dust removal mechanism 6.

[0042] In this embodiment, the raw materials of grain and oil are screened by a cyclone separator 5, and the heavier particles and light straw in the grain and oil raw materials are screened. The screened stones and straw are discharged through a slag discharge port, and the dust-containing exhaust gas is extracted by the dust extraction fan 2 and sent to the dust removal mechanism 6 for dust removal. The grain and oil raw materials after impurities removal are sent to the screw conveyor 3 through the screening discharge port 102. The screw conveyor 3 transports the grain and oil raw materials from the ground to a high place, and then the grain and oil raw materials are accelerated by the powerful fan 4 and sent to the cyclone separator 5, so that the grain and oil raw materials are screened and dust-removed again, and the dust-containing gas is sent to the dust removal mechanism 6 through the cyclone dust outlet pipe 501 for dust removal.

[0043] In one embodiment, Figure 2-7 As shown, the screening mechanism 1 includes a screening support leg 103, which is screwed together by a plurality of vertical connecting rods, and a shock absorber 105 is provided at the top of the screening support leg 103; it also includes a screening box 106, which is arranged at the top of the shock absorber 105, and an air pump 107 is provided on the lower end surface of the screening box 106; a screening feed port 104 communicating with the inside and outside is opened at the top of the screening box 106, and the screening box 106 includes an outer shell, which includes a box cover and a U-shaped box body 108, and the box cover and the box body 108 are connected in a detachable sealing manner, and also includes a screening outlet, which is arranged between the screening dust outlet 101 and the screening outlet 102.

[0044] The screening box 106 also includes a vibrating screen assembly 109 arranged in the box body 108, and the vibrating screen assembly 109 includes a screen 110. There are multiple screens 110 and they are arranged in parallel along the plumb direction. The angle between the screen 110 and the horizontal plane is 30-60 degrees. The screens 110 are respectively a lower screen, a middle screen and an upper screen from bottom to top. A support 113 is provided at the end of each screen 110 near the screening feed port 104 along the length direction, and screen frames 111 are installed on both sides of each screen 110. The screen 110 includes a screen plate 125 and an air oscillation assembly 112. The air oscillation assembly 112 is arranged on the lower end surface of the screen plate 125, the air oscillation assembly 112 is connected to the air pump 107, and an oscillation support plate 114 is installed at the lower end of the air oscillation assembly 112.

[0045] The air oscillation assembly 112 includes a damping rod 121, a piston 122 is provided at the top of the damping rod 121, and a return spring 124 is provided on the outside of the damping rod 121; it also includes a sliding sleeve 123, the sliding sleeve 123 and the damping rod 121 are coaxially arranged, the inner diameter of the sliding sleeve 123 is the same as the outer diameter of the piston 122, the sliding sleeve 123 and the piston 122 are slidably matched, the return spring 124 is provided between the sliding sleeve 123 and the oscillation support plate 114, and a sealing sleeve 117 is provided at the top of the sliding sleeve 123; it also includes an air delivery pipe 120, the air delivery pipe 120 is spiral The air delivery pipe 120 is spiral-shaped, one end of the air delivery pipe 120 is connected to the air pump 107, the cavity between the sliding sleeve 123 and the sealing sleeve 117 is the sliding cavity, and one end of the air delivery pipe 120 is connected to the sliding cavity; it also includes a vibration rod 116, the vibration rod 116 is arranged at the top of the sealing sleeve 117, the top of the vibration rod 116 is fixedly connected to the screen plate 125, the vibration rod 116 is hollow, and the hollow cavity of the vibration rod 116 is the air delivery cavity 118; an exhaust port 115 connected to the vibration rod 116 is opened at the top of the screen plate 125, and a solenoid valve 119 is provided in the cavity inside the vibration rod 116.

[0046] In this embodiment, in order to preliminarily separate the raw materials for grain and oil processing, the raw materials are screened by the screening mechanism 1, and the raw materials enter the end surface of the screen 110 in the box body 108 through the screening feed port 104. Since the screens 110 are a lower screen, a middle screen and an upper screen from bottom to top, and the mesh numbers of the lower screen, the middle screen and the upper screen are different, the gap diameters of the lower screen, the middle screen and the upper screen are gradually reduced, and then the screen 110 is driven to vibrate by the air oscillation component 112, and the dust is blown up while the screen 110 vibrates, so that the accumulation of dust in the screening box 106 is reduced, and then the dust-containing air is extracted by the dust exhaust fan 2 and sent to the dust removal mechanism 6;

[0047] During operation, the grain and oil raw materials enter the box 108 through the screening feed port 104, and then fall on the end surface of the screen 110 under the action of gravity. Since the screen 110 is inclined, preferably, the angle between the screen 110 and the horizontal plane is 20 degrees, 30 degrees or 45 degrees;

[0048] Since the screen 110 includes a screen plate 125 and an air oscillation component 112, an oscillation support plate 114 is installed at the lower end of the air oscillation component 112, and the air oscillation component 112 includes a damping rod 121, a piston 122 is provided at the top of the damping rod 121, and a return spring 124 is provided on the outer side of the damping rod 121; it also includes a sliding sleeve 123, the sliding sleeve 123 and the damping rod 121 are coaxially arranged, the inner diameter of the sliding sleeve 123 is the same as the outer diameter of the piston 122, the sliding sleeve 123 and the piston 122 are slidably matched, and the return spring 124 is provided between the sliding sleeve 123 and the oscillation support plate 114. A sealing sleeve 117 is provided at the top of the sliding sleeve 123; an air delivery pipe 120 is also included, the air delivery pipe 120 is spiral, one end of the air delivery pipe 120 is connected to the air pump 107, the cavity between the sliding sleeve 123 and the sealing sleeve 117 is a sliding cavity, and one end of the air delivery pipe 120 is connected to the sliding cavity; a vibration rod 116 is also included, the vibration rod 116 is provided at the top of the sealing sleeve 117, the top of the vibration rod 116 is fixedly connected to the screen plate 125, the vibration rod 116 is hollow, and the hollow cavity of the vibration rod 116 is the air delivery cavity 118; a solenoid valve 119 is provided in the cavity inside the vibration rod 116;

[0049] It can be understood that the air pump 107 is connected to the air supply pipe 120 through the gas buffer tank and then through the multi-way valve, that is, the gas generated by the air pump 107 when working is intermittently transported to the inner cavity of the sliding sleeve 123 through the air supply pipe 120. When the high-pressure gas enters the cavity in the sliding sleeve 123 through the air supply pipe 120, the high-pressure gas lifts the sealing sleeve 117 upward, so that the sliding sleeve 123 moves upward with the sealing sleeve 117. Since a distance sensor is provided in the piston 122, when the distance between the sealing sleeve 117 and the piston 122 exceeds a set value, the solenoid valve 119 in the air supply cavity 118 is opened. At the same time, in order to prevent the sliding sleeve 123 from separating from the piston 122, a limit rod is provided on the outer side of the piston 122, and the limit rod is in a [ shape. When the sliding sleeve 123 rises to the highest position, the sealing sleeve 117 is blocked by the limit rod, so that the sliding sleeve 123 23 cannot continue to rise. At the same time, since an exhaust port 115 connected to the vibration rod 116 is opened at the top of the screen plate 125, and a one-way valve is installed at the exhaust port 115, the gas can only be discharged outward. When the solenoid valve 119 is opened, the gas in the sliding cavity is discharged through the exhaust port 115 and the dust in the raw material is blown up, so that the dust cannot fall on the surface of the grain and oil processing raw material. As the gas in the sliding cavity continues to decrease, the pressure in the sliding cavity gradually decreases, and then the sliding sleeve 123 moves downward under the action of gravity until the gas in the sliding cavity is completely discharged, and then the above action is repeated, so that the screen 110 composed of the screen plate 125 vibrates in the up and down direction. At the same time, the dust in the raw material is blown up by the discharged gas, reducing the accumulation of dust in the screening box 106 and preventing the dust from adhering to the surface of the grain and oil raw material.

[0050] At the same time, since the angle between the screen 110 and the horizontal plane is 20 degrees, 30 degrees or 45 degrees, the smoke-containing gas blown up through the exhaust port 115 moves toward the dust exhaust fan 2, and under the action of the dust exhaust fan 2, the smoke-containing gas is sent to the dust removal mechanism 6 for dust removal. The heavier raw materials for grain and oil processing are discharged through the screening outlet 102 and sent to the screw conveyor 3 to lift the raw materials for grain and oil processing.

[0051] like Figure 8-10 As shown, a powerful fan 4 is provided at the top of the screw conveyor 3, and the air outlet of the powerful fan 4 is connected to the cyclone dust exhaust pipe 501. A nitrogen generator 504 is provided on one side of the cyclone separator 5, and it also includes a buffer tank 505. The cyclone separator 5 includes a cylindrical body 502, and a cyclone feed pipe 509 is provided on the outer side of the cylindrical body 502. A partition is provided in the middle of the cyclone feed pipe 509 to divide the pipeline into a nitrogen pipeline 508 and a material pipeline 507. The air outlet of the buffer tank 505 is connected to the nitrogen pipeline 508, and it also includes an inner rotating cylinder 510. The inner rotating cylinder 510 is coaxially arranged with the cylindrical body 502, and a conical cylinder 506 is provided at the bottom end of the cylindrical body 502, and a collecting box 503 is provided at the bottom end of the conical cylinder 506.

[0052] The outer diameter of the inner rotating cylinder 510 is smaller than the inner diameter of the cylindrical body 502. The inner rotating cylinder 510 is fixedly connected to the top of the cylindrical body 502 via a flange. The area between the cylindrical body 502 and the inner rotating cylinder 510 constitutes a nitrogen inlet chamber 511. A plurality of vent holes 512 connecting the inside and the outside are provided on the outer wall surface of the inner rotating cylinder 510. The cross section of the vent hole 512 is wedge-shaped and the width gradually increases in the radial outward direction.

[0053] In this embodiment, the raw materials for grain and oil processing are lifted from the ground to the same height as the cyclone separator 5 by the screw conveyor 3, so as to facilitate the delivery of the raw materials for grain and oil processing into the cylindrical body 502. Since an inner rotating cylinder 510 is provided in the cylindrical body 502, and the inner rotating cylinder 510 is coaxially arranged with the cylindrical body 502, a conical cylinder 506 is provided at the bottom end of the cylindrical body 502, and a collecting box 503 is provided at the bottom end of the conical cylinder 506. The outer diameter of the inner rotating cylinder 510 is smaller than the inner diameter of the cylindrical body 502. The inner rotating cylinder 510 is fixedly connected to the top of the cylindrical body 502 by a flange. The area between the cylindrical body 502 and the inner rotating cylinder 510 constitutes a nitrogen inlet chamber 511. A plurality of vent holes 512 connecting the inside and the outside are provided on the outer wall surface of the inner rotating cylinder 510. The cross section of the vent hole 512 is wedge-shaped and the width gradually increases in the radial outward direction. At the same time, the outer side of the cylindrical body 502 is provided with a There is a cyclone feed pipe 509, and a partition is provided in the middle of the cyclone feed pipe 509 to divide the pipe into a nitrogen pipe 508 and a material pipe 507. The nitrogen pipe 508 is connected to the nitrogen inlet chamber 511, and the material pipe 507 is connected to the inside of the inner rotating cylinder 510. Then, under the action of the powerful fan 4, the raw material is blown into the inner rotating cylinder 510 at a faster speed and spirally moves along the inner wall of the inner rotating cylinder 510. The heavier raw material enters the collecting box 503 under the action of centrifugal force, and the nitrogen enters the inner rotating cylinder 510 through the vent hole 512 provided on the outer wall of the inner rotating cylinder 510, thereby reducing the oxygen content in the inner rotating cylinder 510 and reducing the probability of explosion of the dust-containing gas in the inner rotating cylinder 510. The lighter dust forms an ascending spiral airflow again in the middle of the inner rotating cylinder 510, so that the dust is discharged from the cyclone dust outlet pipe 501 and sent to the dust removal mechanism 6 for dust removal.

[0054] During operation, the nitrogen generated by the nitrogen generator 504 first enters the buffer tank 505 for buffering, and then is sent to the nitrogen pipeline 508 of the cyclone feed pipe 509. The nitrogen enters the nitrogen inlet cavity 511 in the cylindrical body 502 through the nitrogen pipeline 508 and moves downward in a spiral along the inner wall surface of the cylindrical body 502. After entering the nitrogen inlet cavity 511, the nitrogen enters the inner rotating cylinder 510 through the vent hole 512 of the inner rotating cylinder 510. At the same time, since the cross section of the vent hole 512 is wedge-shaped and the width in the radial outward direction gradually increases, and the angle between the vent hole 512 and the surface tangent is 30 or 45 degrees, the direction of the speed of the nitrogen when entering the inner rotating cylinder 510 is the same as that of the inner rotating cylinder 510. The angle of the inner wall of the inner rotating cylinder 510 is not 90 degrees, so that part of the energy of the nitrogen pushes the raw material to rotate around the wall of the inner rotating cylinder 510, and part of the energy blows off the dust attached to the raw material. At the same time, when the raw material is lifted to a higher position by the screw conveyor 3, the raw material is sent into the inner rotating cylinder 510 at a faster speed through the powerful fan 4 and rotates along its inner wall. Under the action of centrifugal force and gravity, the heavier raw material moves downward in a spiral along the inner wall of the inner rotating cylinder 510 and finally falls into the collecting box 503. The lighter smoke and dust form a vortex again at the bottom of the conical cylinder 506 and moves upward in a spiral to send the smoke and dust through the cyclone dust outlet pipe 501 into the dust removal mechanism for dust removal.

[0055] In another embodiment of the cyclone separator 5, Figure 11-13 As shown, the top of the inner rotating cylinder 510 is provided with a magnetic suspension shaft, and the magnetic suspension shaft includes a permanent magnetic limit sleeve 513 arranged on the outside of the cyclone dust outlet pipe 501. The permanent magnetic limit sleeve 513 is in an I-shaped shape, including a fixed cylinder 514, and the fixed cylinder 514 is fixedly connected to the cyclone dust outlet pipe 501. Limit plate rings 515 are provided at both ends of the fixed cylinder 514, and permanent magnets are provided on the opposite surfaces of the limit plate rings. A permanent magnet is provided on the outer side of the fixed cylinder 514, and also includes a rotating plate ring 516. The inner side of the rotating plate ring 516 is provided with an electromagnet; it also includes a rotating shell 517, which is arranged at the lower end of the rotating plate ring 516, and the outer diameter of the rotating shell 517 is smaller than that of the rotating plate ring 516. An air seal is provided on the inner diameter of the cylindrical body 502, near the end of the rotating plate ring 516 on the outside of the rotating shell 517, and the air seal is connected to the rotating shell 517. A plurality of nitrogen inlet cavities are provided on the outside of the rotating plate ring 516, and the nitrogen inlet cavities extend downward into the rotating shell 517. A plurality of collision plates 518 are provided on the inner side of the rotating shell 517. The collision plates 518 are polyhedral, and one end of the collision plate 518 is a collision surface 519, and the other end of the collision plate 518 is a flow-pushing plate 520. A vent 512 is provided on the end of the flow-pushing plate 520, and the nitrogen inlet cavity is connected to the vent 512, and the angle between the flow-pushing plate 520 and the collision surface 519 is 20-50 degrees.

[0056] In this embodiment, a magnetic suspension shaft is provided at the top of the inner rotating cylinder 510, and the magnetic suspension shaft includes a permanent magnetic limit sleeve 513 arranged on the outside of the cyclone dust outlet pipe 501. The permanent magnetic limit sleeve 513 is in an I-shaped shape and includes a fixed cylinder 514. The fixed cylinder 514 is fixedly connected to the cyclone dust outlet pipe 501. Limit plate rings 515 are provided at the upper and lower ends of the fixed cylinder 514, and permanent magnets are provided on the opposite surfaces of the limit plate rings. A permanent magnet is provided on the outer side surface of the fixed cylinder 514, and a rotating plate ring 516 is also provided. An electromagnet is provided on the inner side surface of the rotating plate ring 516, so that the inner rotating cylinder 510 is suspended in the permanent magnetic limit sleeve 513, which is convenient for the inner rotating cylinder 510 to rotate around the central axis of the cylindrical body 502.

[0057] At the same time, an air seal is provided on the outer side of the rotating shell 517 near the end of the rotating plate ring 516, and a plurality of nitrogen inlet cavities are provided on the outer side of the rotating plate ring 516, and the nitrogen inlet cavities extend downward into the rotating shell 517, so that the nitrogen entering the nitrogen inlet cavity 511 through the nitrogen pipeline 508 can only enter the rotating shell 517 through the nitrogen inlet cavities.

[0058] Then, a plurality of collision plates 518 are provided on the inner side of the rotating shell 517. The collision plates 518 are in the shape of a polyhedron. One end of the collision plate 518 is a collision surface 519. The other end of the collision plate 518 is a flow-pushing plate 520. A vent 512 is provided on the end of the flow-pushing plate 520. The nitrogen inlet cavity is connected to the vent 512. The angle between the flow-pushing plate 520 and the collision surface 519 is 20-50 degrees. It can be understood that when the nitrogen is discharged through the vent 512 on the flow-pushing plate 520, the distribution of the collision plate 518 is not balanced. The inner rotating cylinder 510 is driven to rotate in a direction opposite to the speed direction of the raw material entering the inner rotating cylinder 510, thereby increasing the relative speed between the raw material and the collision plate 518, making it easier to crush the tiny particles mixed in the material and shake off the dust attached to the surface of the raw material. At the same time, since the installation positions of the collision plates 518 correspond to each other, that is, the central axis of the vent hole 512 on the flow-pushing plate 520 passes through the collision surface 519 of the collision plate 518 below it, the dust on the collision surface 519 of the other collision plate 518 is blown away when the nitrogen is ejected.

[0059] During operation, nitrogen enters the nitrogen inlet chamber 511 in the cylinder 502 through the nitrogen pipeline 508. After entering the nitrogen inlet chamber 511, the nitrogen is sent into the collision plate 518 on the inner wall of the rotating shell 517 through the nitrogen inlet tube chamber on the rotating shell 517, and then ejected outward at high speed through the vent hole 512. Under the interaction of forces, the rotating shell 517 is driven to rotate. When the raw material is lifted to a higher position by the screw conveyor 3, the raw material is sent into the inner rotating cylinder 510 at a faster speed through the powerful fan 4 and rotated along its inner wall. Under the action of centrifugal force and gravity, the heavier raw material moves downward in a spiral along the inner wall of the inner rotating cylinder 510. At the same time, the rotation of the inner rotating cylinder 510 The shell 517 rotates and its rotation direction is opposite to the movement direction of the raw material, so that the relative speed between the raw material and the collision plate 518 increases, which makes it easier to crush the tiny particles mixed in the material and shake off the dust attached to the surface of the raw material. At the same time, the nitrogen ejected from the air vent 512 blows away the dust on the collision surface 519 on other collision plates 518. Under the action of centrifugal force and gravity, the heavier raw material spirally moves downward along the inner wall of the rotating shell 517 and finally falls into the collecting box 503. The lighter smoke and dust form a vortex again at the bottom of the conical cylinder 506 and spirally moves upward to send the smoke and dust through the cyclone dust outlet pipe 501 into the dust removal mechanism 6 for dust removal.

[0060] In one embodiment, Figure 14-21 As shown, the dust removal mechanism 6 includes a spray tower shell 601, a tail gas outlet 605 is provided at the top of the spray tower shell 601, a dust-containing gas inlet 602 is provided on the outside of the spray tower shell 601 close to the ground, and a maintenance port 604 is provided on the outside of the spray tower shell 601 away from the dust-containing gas inlet 602; it also includes a plurality of high-efficiency sprayers 607, the high-efficiency sprayers 607 are arranged inside the spray tower shell 601, the spray tower shell 601 and the high-efficiency sprayers 607 are coaxially arranged, a dewatering mist device 606 is provided between the tail gas outlet 605 and the high-efficiency sprayers 607, a separation filter is provided at the top of the high-efficiency sprayers 607, and an air intake assembly 608 connected to the dust-containing gas inlet 602 is also provided in the spray tower shell 601; it also includes a water tank 603, the water tank 603 is connected to the high-efficiency sprayers 607 and the air intake assembly 608 inside the spray tower shell 601 through a circulating pump.

[0061] The air inlet assembly 608 is composed of a plurality of gas-liquid premixing tubes arranged side by side, each gas-liquid premixing tube includes a premixing tube body 610, the premixing tube body 610 is cylindrical, a premixing assembly is arranged in the middle of the premixing tube body 610, and the premixing assembly divides the premixing tube body 610 into two upper and lower tube cavities, the upper tube cavity constitutes a diffusion tube cavity 611, and the lower tube cavity constitutes a liquid inlet tube cavity 615, the cross-sections of the diffusion tube cavity 611 and the liquid inlet tube cavity 615 are both parabolic. An annular air inlet ring 612 is provided on the outside of the mixing tube body 610, and the hollow tube cavity inside the air inlet ring 612 constitutes a receiving chamber 613, and a smoke gas inlet pipe 609 is provided on the outside of the air inlet ring 612; it also includes an expansion chamber 618, and the expansion chamber 618 is arranged on the outer side of the liquid inlet tube cavity 615. A plurality of connecting tubes 614 are provided in the premixing tube body 610, and the connecting tubes 614 are arranged in the radial direction, and the connecting tubes 614 connect the receiving chamber 613 with the expansion chamber 618.

[0062] The air inlet assembly 608 also includes a mounting support rod 616, which is coaxially arranged with the premixing tube body 610. A plurality of connecting rods arranged at intervals are arranged at the top of the mounting support rod 616. The connecting rods are arranged at equal intervals along the outer circumference of the mounting support rod 616. The cavity between the connecting rod, the mounting support rod 616 and the premixing assembly constitutes a liquid inlet cavity 619. The premixing assembly is mounted at the top of the connecting rod. The premixing assembly includes a liquid inlet cavity shell 620. The liquid inlet cavity shell 620 is barrel-shaped. A plurality of spray nozzles connecting the inside and the outside are arranged on the outer side of the liquid inlet cavity shell 620. The nozzle also includes an atomizing grid baffle ring 621 made of metal. The atomizing grid baffle ring 621 is cylindrical. The atomizing grid baffle ring 621 and the liquid inlet chamber shell 620 are coaxially arranged with the premixing tube body 610. A plurality of discharge tips are provided on the outer side of the atomizing grid baffle ring 621. The atomizing grid baffle ring 621 is connected to an external power supply through a cable. The nozzle also includes an electromagnet 617. The electromagnet 617 is arranged in the premixing tube body 610 and is coaxial with the atomizing grid baffle ring 621. The electromagnet 617 and the atomizing grid baffle ring 621 have the same height in the plumb direction.

[0063] In this embodiment, the circulation pump on the outside of the water tank 603 is connected to the high-efficiency sprayer 607 and the air intake assembly 608 inside the spray tower shell 601, so as to achieve the purpose of providing water source and water circulation for the high-efficiency sprayer 607 and the air intake assembly 608 through the water tank 603, and then the dust-containing exhaust gas is sent into the spray tower shell 601 through the dust-containing gas inlet 602, and the smoke gas enters the air intake assembly 608 to mix the gas with water, and then the treated gas passes through the water mist sprayed by the high-efficiency sprayer 607 again during the rising process to adsorb the dust, and then the clean gas is discharged after being processed by the demisting device 606.

[0064] During operation, the dust-containing gas enters the air intake assembly 608 through the dust-containing gas inlet 602, and then is sent to the receiving chamber 613 of the air inlet ring 612 through the smoke gas inlet pipe 609, and then is sent to the expansion chamber 618 through the connecting pipe 614, and finally enters the premixing assembly. At the same time, the circulating pump sends the clean water in the water tank 603 into the air intake assembly 608 and presses it into the liquid inlet pipe cavity 615, and then enters the liquid inlet cavity 619 through the air between the connecting rods. After the clean water enters the liquid inlet cavity 619, the water pressure is transmitted to the surface of the liquid inlet cavity shell 620 under the action of pressure, so that the clean water is sprayed outward through the injection nozzle on the surface of the liquid inlet cavity shell 620, and then is sprayed outward at the atomizing grid retaining ring 62 1, the clean water is atomized to facilitate the combination with the dust in the dust-containing gas. In order to enhance the adsorption capacity of the mist droplets, the atomizing grid baffle ring 621 is energized and the discharge is performed at the tip of the outer side of the atomizing grid baffle ring 621, so that the mist droplets are charged, which enhances the adsorption capacity of the mist droplets on the dust while reducing the possibility of explosion of the dust-containing gas. At the same time, the electromagnet 617 generates a high-frequency changing electromagnetic field to increase the temperature of the metal atomizing grid baffle ring 621, thereby increasing the temperature of the mist droplets to prevent the phenomenon of ice blocking the air intake component 608 due to the low temperature of the clean water in winter. Then, the dust-containing gas and the high-temperature charged mist droplets are mixed in the diffusion tube cavity 611 and then sprayed out of the air intake component 608.

[0065] Then, the atomized water droplets sprayed by the high-efficiency sprayer 607 will adsorb the remaining unabsorbed smoke again, and fall to the upper end of the high-efficiency sprayer 607 in the lower layer under the action of gravity, and then the water vapor continues to rise and discharges the clean gas after being processed by the demisting device 606, and the water is sent back to the water tank 603; since a separation filter is installed on the top of the high-efficiency sprayer 607 in the lower layer, the water body is filtered and treated, and the treated water body returns to the water tank 603, and the impurities are removed from the spray tower shell 601.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust removal device for grain and oil processing, comprising a screening mechanism, a screw conveyor, a cyclone separator and a dust removal mechanism connected in sequence, characterized in that: The screening mechanism comprises a screening box, in which a vibration screening component is arranged, the vibration screening component comprises a screen and an air oscillation component, the air oscillation component is installed at the lower end of the screen, and also comprises a screening dust outlet and a screening material outlet, and also comprises a dust extraction fan, the air inlet of the dust extraction fan is connected with the screening dust outlet, the air outlet of the dust extraction fan is connected with the dust removal mechanism through an arranged air delivery pipe, the feed inlet of the screw conveyor is connected with the screening material outlet, the material outlet of the screw conveyor is connected with the cyclone separator, and the cyclone dust outlet pipe of the cyclone separator is connected with the dust removal mechanism; The air oscillation component includes a damping rod, a piston is provided at the top of the damping rod, and a return spring is provided on the outside of the damping rod; it also includes a sliding sleeve, which is coaxially arranged with the damping rod, the inner diameter of the sliding sleeve is the same as the outer diameter of the piston, the sliding sleeve and the piston are slidably matched, the return spring is arranged between the sliding sleeve and the oscillation support plate, and a sealing sleeve is provided at the top of the sliding sleeve; it also includes an air supply pipe, which is spiral, one end of the air supply pipe is connected to the air pump, the cavity between the sliding sleeve and the sealing sleeve is a sliding cavity, and one end of the air supply pipe is connected to the sliding cavity; it also includes a vibration rod, which is arranged at the top of the sealing sleeve, the top of the vibration rod is fixedly connected to the screen plate, the vibration rod is hollow, and the hollow cavity of the vibration rod is the air supply cavity; an exhaust port connected to the vibration rod is provided at the top of the screen plate, and an electromagnetic valve is provided in the cavity in the vibration rod; A magnetic suspension shaft is provided at the top of the inner rotating cylinder body, and the magnetic suspension shaft includes a permanent magnetic limit sleeve arranged on the outside of the cyclone dust outlet pipe. The permanent magnetic limit sleeve is in an I-shaped shape, including a fixed cylinder, and the fixed cylinder is fixedly connected to the cyclone dust outlet pipe. Limit plate rings are provided at both ends of the fixed cylinder, and permanent magnets are provided on the opposite surfaces of the limit plate rings. A permanent magnet is provided on the outer side surface of the fixed cylinder, and also includes a rotating plate ring, and an electromagnet is provided on the inner side surface of the rotating plate ring; and also includes a rotating shell, which is arranged at the lower end of the rotating plate ring, and the outer diameter of the rotating shell is smaller than that of the rotating plate ring. The inner diameter of the cylinder is 1.5 mm, and an air seal is provided on the outer side of the rotating shell near the end of the rotating plate ring. The air seal is connected to the rotating shell. A plurality of nitrogen inlet cavities are provided on the outer side of the rotating plate ring. The nitrogen inlet cavities extend downward into the rotating shell. A plurality of collision plates are provided on the inner side of the rotating shell. The collision plates are polyhedral. One end of the collision plate is a collision surface. The other end of the collision plate is a flow-pushing plate. A vent is provided on the end of the flow-pushing plate. The nitrogen inlet cavity is connected to the vent. The angle between the flow-pushing plate and the collision surface is 20-50 degrees. The air intake assembly also includes an installation support rod, which is coaxially arranged with the premixing tube body. A plurality of spaced connecting rods are provided at the top of the installation support rod. The connecting rods are equidistantly arranged along the circumference of the outer side of the installation support rod. The cavity between the connecting rod, the installation support rod and the premixing assembly constitutes a liquid inlet chamber. The premixing assembly is installed at the top of the connecting rod. The premixing assembly includes a liquid inlet chamber shell. The liquid inlet chamber shell is barrel-shaped. A plurality of injection nozzles connecting the inside and the outside are provided on the outer side of the liquid inlet chamber shell. The premixing assembly also includes an atomizing grid baffle ring made of metal. The atomizing grid baffle ring is cylindrical. The atomizing grid baffle ring and the liquid inlet chamber shell are coaxially arranged with the premixing tube body. A plurality of discharge tips are provided on the outer side of the atomizing grid baffle ring. The atomizing grid baffle ring is connected to an external power supply through a cable. The premixing assembly also includes an electromagnet. The electromagnet is arranged in the premixing tube body and is coaxial with the atomizing grid baffle ring. The electromagnet and the atomizing grid baffle ring have the same height in the plumb direction.

2. The dust removal device for grain and oil processing according to claim 1, characterized in that: The screening mechanism includes screening support legs, which are formed by screwing a plurality of vertical connecting rods, and a shock absorber is arranged at the top of the screening support legs; it also includes a screening box, which is arranged at the top of the shock absorber, and an air pump is arranged at the lower end surface of the screening box; a screening feed port connecting the inside and the outside is opened at the top of the screening box, and the screening box includes an outer shell, which includes a box cover and a U-shaped box body, the box cover and the box body are connected by a detachable sealing connection, and also includes a screening outlet, which is arranged between the screening dust outlet and the screening outlet.

3. The dust removal device for grain and oil processing according to claim 2 is characterized in that: The screening box also includes a vibrating screen assembly arranged in the box body, the vibrating screen assembly includes a screen, there are multiple screens and they are arranged in parallel along the plumb direction, the angle between the screen and the horizontal plane is 30-60 degrees, the screens are lower screen, middle screen and upper screen from bottom to top, a support is provided on each screen near the screening feed port end along the length direction, screen frames are installed on both sides of each screen, the screen includes a screen plate and an air oscillation assembly, the air oscillation assembly is arranged on the lower end surface of the screen plate, the air oscillation assembly is connected to the air pump, and an oscillation support plate is installed at the lower end of the air oscillation assembly.

4. The dust removal device for grain and oil processing according to claim 1, characterized in that: A powerful fan is provided at the top of the screw conveyor, and the air outlet of the powerful fan is connected to the cyclone dust exhaust pipe. A nitrogen generator is provided on one side of the cyclone separator, and a buffer tank is also included. The cyclone separator includes a cylindrical body, a cyclone feed pipe is provided on the outside of the cylindrical body, a partition is provided in the middle of the cyclone feed pipe to divide the pipeline into a nitrogen pipeline and a material pipeline, the air outlet of the buffer tank is connected to the nitrogen pipeline, and also includes an inner rotating cylinder body, the inner rotating cylinder body is coaxially arranged with the cylindrical body, a conical cylinder is provided at the bottom end of the cylindrical body, and a collection box is provided at the bottom end of the conical cylinder.

5. The dust removal device for grain and oil processing according to claim 4, characterized in that: The outer diameter of the inner rotating cylinder is smaller than the inner diameter of the cylindrical body. The inner rotating cylinder is fixedly connected to the top of the cylindrical body through a flange. The area between the cylindrical body and the inner rotating cylinder constitutes a nitrogen inlet chamber. A plurality of vents connecting the inside and the outside are arranged on the outer wall surface of the inner rotating cylinder. The cross-section of the vent is wedge-shaped and the width gradually increases in the radial outward direction.

6. The dust removal device for grain and oil processing according to claim 1, characterized in that: The dust removal mechanism includes a spray tower shell, an exhaust gas outlet is provided at the top of the spray tower shell, a dust-containing gas inlet is provided on the outside of the spray tower shell close to the ground, and a maintenance port is provided on the outside of the spray tower shell away from the dust-containing gas inlet; it also includes a plurality of high-efficiency sprayers, the high-efficiency sprayers are arranged inside the spray tower shell, the spray tower shell and the high-efficiency sprayers are coaxially arranged, a demisting device is provided between the exhaust gas outlet and the high-efficiency sprayers, a separation filter is provided at the top of the high-efficiency sprayers, and an air intake assembly connected to the dust-containing gas inlet is also provided in the spray tower shell; it also includes a water tank, which is connected to the high-efficiency sprayer and the air intake assembly inside the spray tower shell through a circulating pump.

7. The dust removal device for grain and oil processing according to claim 6, characterized in that: The air intake assembly is composed of a plurality of gas-liquid premixing tubes arranged side by side, each gas-liquid premixing tube includes a premixing tube body, the premixing tube body is cylindrical, a premixing assembly is arranged in the middle of the premixing tube body, the premixing assembly divides the premixing tube body into two upper and lower tube cavities, the upper tube cavity constitutes a diffusion tube cavity, and the lower tube cavity constitutes a liquid inlet tube cavity, the cross-sections of the diffusion tube cavity and the liquid inlet tube cavity are both parabolic, an annular air induction ring is arranged on the outside of the premixing tube body, the hollow tube cavity inside the air induction ring constitutes a receiving chamber, and a smoke gas intake pipe is arranged on the outside of the air induction ring; it also includes an expansion chamber, the expansion chamber is arranged on the outer side of the liquid inlet tube cavity, a plurality of connecting tubes are arranged in the premixing tube body, the connecting tubes are arranged in a radial direction, and the connecting tubes connect the receiving chamber with the expansion chamber.

Images