Ventilation atomization suspension external circulation treatment equipment

Abstract

The invention relates to the technical field of industrial sludge pollutant drying equipment, and particularly discloses ventilation, atomization and suspension external circulation treatment equipment which comprises a dryer and further comprises an elbow, an inner container, an outer container, an air inlet pipe, an air outlet pipe, an air outlet pipe, an air outlet pipe, an air outlet pipe, an air inlet pipe and an air outlet pipe, and the inner diameter of the elbow is composed of a thin section and a thick section and is gradually changed; the elbow is divided into an inclined arc section and a flat arc section according to the inner diameter and the outer diameter; and the inner wall of the baffle is opposite to the flat arc section and forms an inner passage for airflow to pass through. According to the ventilation atomization suspension external circulation treatment equipment provided by the invention, the inner ring of the elbow is prevented from being abraded through the inner container, and the inner container can move along with the accumulation layer, so that the cross sectional area of airflow passing through the inner channel is maintained in a stable area range, the flow velocity change of the airflow is prevented from being too large, and the interference on particle retention is reduced; the loss of particles on the surface of the accumulation layer due to scraping is also reduced, more particles can be stored in the flat arc section, the opening frequency of the air locking valve is reduced, and the service life is further prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial sludge pollutant drying equipment, in particular to a ventilation atomization suspension external circulation treatment equipment. Background Art

[0002] After factory production and processing, industrial wastewater containing sludge is usually generated. In order to meet the environmental protection requirements of clean discharge, the industrial wastewater must first be purified and the sludge generated by wastewater sedimentation must be treated to prevent the leakage of toxic components in the sludge and cause environmental pollution.

[0003] According to the disclosure (announcement) number: CN107285598B, the disclosure (announcement) date: 2020-09-29, an atomized suspended state external circulation drying equipment is disclosed, including a dryer composed of a multi-section body, a scattering device is provided at the lower end of the dryer, and an atomizing nozzle is provided in the scattering device to spray water-containing sludge particles downward. At the same time, the spraying direction is coincident with the hot air blown out of the air inlet pipe, so that the atomized sludge particles are heated and dried, and the particles enter the U-shaped drying elbow through the pipeline and are retained, and then the larger particles retained are collected and refluxed into the dryer for secondary drying, and the smaller particles discharged from the U-shaped drying elbow are recycled to the rear circulation separator and cyclone.

[0004] In the prior art including the above-mentioned patent, when particles are retained by the U-shaped drying elbow, the sensor in the U-shaped drying elbow will make a judgment based on the pressure, airflow state and particle concentration in the elbow, and after the particles accumulate to a certain amount (at least a certain amount is required to reduce the opening frequency of the air lock valve), the air lock valve will be opened to return the particles to the dryer. The U-shaped drying elbow can be canceled when processing low-moisture, easily dispersed sludge, but when processing large batches of sludge with high moisture content and difficult to disperse, the U-shaped drying elbow needs to work under load, so the frequency of particles retained by the U-shaped drying elbow will increase, and the corresponding opening frequency of the air lock valve needs to be increased (normally opened every ten minutes, now it takes eight minutes). Even lower frequency opening), on the one hand, it will reduce the service life of the air lock valve, on the other hand, the wear of the inner ring of the U-shaped drying elbow will be aggravated, shortening the service life of the U-shaped drying elbow. At the same time, when particles accumulate in the U-shaped drying elbow, the channel area in the elbow pipe will be reduced due to the accumulation of particles, which will increase the gas flow rate at the elbow position, accelerate the particle speed, and weaken the particle retention capacity of the U-shaped drying elbow. The accelerated particles will also scrape and push the surface of the accumulated particles, thereby causing particle loss on the surface of the accumulation layer, interfering with the judgment of the opening of the air lock valve, and also increasing the workload of the rear circulation separator and cyclone, resulting in reduced dryness of the discharged particles. Summary of the Invention

[0005] The purpose of the present invention is to provide a ventilation atomization suspension external circulation treatment equipment, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A ventilation, atomization, suspension and external circulation treatment device, comprising a dryer and:

[0008] The inner diameter of the elbow is composed of a thin section and a thick section and is set in a gradient manner. The elbow is divided into an oblique arc section and a flat arc section according to the inner and outer diameters;

[0009] The inner liner has one end in contact with the inner wall of the thin segment, and its inner wall is arranged opposite to the flat arc segment to form an inner channel for airflow, wherein:

[0010] The inner container is close to the oblique arc section along a predetermined direction, so that the distance between the inner wall of the inner container and the flat arc section can be adjusted.

[0011] Preferably, the thick section is provided with an extension section which is connected with the flat arc section and is located in the inner track.

[0012] Preferably, a tube seat is provided on the outside of the elbow, and a connecting shaft which can be axially moved on the tube seat is fixedly mounted on the inner liner.

[0013] Preferably, a threaded sleeve threadedly connected to the connecting shaft is provided in the pipe seat.

[0014] Preferably, it further comprises a sliding sleeve which is arranged on the outside of the threaded sleeve and has a plurality of elastic members arranged between the sliding sleeve and the threaded sleeve.

[0015] Preferably, an arc slideway is provided in the tube seat for enabling the sliding sleeve to move along a predetermined arc path, and the inner container is driven to move to the extension section along the arc movement path.

[0016] Preferably, it further comprises an outer channel arranged outside the inner channel, and the inner liner is provided with a square hole for diverting the airflow in the inner channel into the outer channel.

[0017] Preferably, the inner liner port is fixedly installed with triangular ends that are symmetrically arranged and keep in contact with the inner wall of the elbow.

[0018] Preferably, the triangular end portion is provided with an arc plate for cooperating with the flat arc segment stacking.

[0019] Preferably, a plurality of openings connected to the flat arc segment are provided on the triangular end.

[0020] In the above technical solution, the present invention provides a ventilation atomization suspension external circulation treatment equipment, which has the following beneficial effects: the shielding ability of the inner tank avoids the wear of the inner ring of the elbow bend, and the inner wall top of the inner tank always maintains the required ventilation distance with the surface of the pile layer during the upward movement, so that the cross-sectional area of the air flow through the inner channel is maintained in a stable area, avoiding the situation where the flow velocity of the air flow through the inner channel is accelerated, so that the air flow channel in the elbow will not interfere with the retention of particles, and also reduces the problem of particles on the surface of the pile layer being scraped and lost, reducing the elbow outlet The wear caused by the equipment at the rear is aggravated, and because the inner tank can move with the accumulation layer, the thickness of the accumulation layer can be increased under the condition that the flow velocity in the inner channel is kept in a stable state, so that more retained particles can be stored in the flat arc section, and then the air lock valve is opened. While increasing the storage capacity of particles, it also reduces the opening frequency of the air lock valve, so that the equipment has the following functional effects when processing large quantities of sludge particles: ensuring the service life of the air lock valve, reducing damage to the elbow, and returning more sludge particles for processing at the original number of times the air lock valve is opened, reducing the loss to other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of a ventilation atomization suspension external circulation treatment device provided in an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the assembly of the extended inlet pipe, elbow and extended outlet pipe in the device provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of an elbow provided in an embodiment of the present invention;

[0025] Figure 4 A schematic side cross-sectional view of an elbow provided by an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the explosion of the elbow and the inner tank provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram showing the perspective of a thin elbow section port provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram showing the perspective of the elbow thick section port provided in an embodiment of the present invention;

[0029] Figure 8 A schematic diagram showing the position change of the inner container in the elbow provided by an embodiment of the present invention;

[0030] Figure 9 A schematic diagram of a connecting shaft provided in an embodiment of the present invention;

[0031] Figure 10 Schematic diagram of an explosion of the connecting shaft, threaded sleeve and sliding sleeve provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Dryer; 11. Extended inlet pipe; 12. Extended outlet pipe; 13. Circulating separator; 14. Cyclone; 2. Elbow; 21. Thin section; 22. Thick section; 23. Raised section; 24. Flat arc section; 25. Oblique arc section; 26. Extended section; 3. First ash collecting bin; 31. Second ash collecting bin; 4. Pipe seat; 41. Slide hole; 42. Side plate; 43. Arc slideway; 5. Connecting shaft; 51. Clamp; 52. Threaded section; 53. Threaded sleeve; 54. Slider; 55. Slide sleeve; 56. Ring; 57. Slide groove; 6. Inner liner; 61. Round hole; 62. Square hole; 63. Triangular end; 64. Opening; 65. Arc plate; 7. Inner channel; 71. Outer channel. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-10 As shown, a ventilation atomization suspension external circulation treatment device includes a dryer 1 and also includes:

[0036] The inner diameter of the elbow 2 is composed of a thin section 21 and a thick section 22 and is arranged in a gradual manner. The elbow 2 is divided into an oblique arc section 25 and a flat arc section 24 according to the inner and outer diameters;

[0037] One end of the inner liner 6 is in contact with the inner wall of the thin segment 21, and its inner wall is arranged opposite to the flat arc segment 24, forming an inner channel 7 for air flow, wherein:

[0038] The inner container 6 approaches the oblique arc section 25 along a predetermined direction, so that the distance between the inner wall of the inner container 6 and the flat arc section 24 can be adjusted.

[0039] Specifically, the dryer 1 is also connected to an extended inlet pipe 11 installed at the air inlet of the elbow 2, the air outlet of the elbow 2 is connected to an extended outlet pipe 12, and the air outlet of the extended outlet pipe 12 is connected to a circulation separator 13, as well as a cyclone 14 located at the air outlet of the circulation separator 13, and each component is detachably installed with bolts and nuts. At the same time, the dryer 1, the extended inlet pipe 11, the extended outlet pipe 12, the circulation separator 13 and the cyclone 14 are all components in the prior art and will not be described here.

[0040] Further, such as Figure 4 As shown, the end contact area of the inner liner 6 increases during the upward movement, so that the left port of the inner channel 7 is always used for airflow, thereby allowing the inner liner 6 to play a shielding role for the inner circle of the elbow 2.

[0041] Furthermore, the inner liner 6 is made of elastic alloy metal, which can enable the inner liner 6 to restore its deformation at both ends during the upward movement and maintain contact with the inner wall of the elbow 2 (the two lower ends of the inner liner 6 are located below the axial line of the elbow 2 in the default state, and are in a deformed and close state), ensuring the stability of the inner channel 7 for airflow, and the sum of the horizontal area and the upward area when the two ends of the inner liner 6 expand can remain the same as the channel area of the original inner channel 7 when no particles are accumulated, so that the cross-section of the airflow passing through the inner channel 7 is maintained within the required range.

[0042] Furthermore, during the upward movement, the lower end of the inner liner 6 remains parallel to the tangent of the flat arc segment 24, while the arc top of the inner liner 6 forms a triangular chamber with the oblique arc segment 25, which facilitates the adjustment of the cross section of the inner channel 7.

[0043] When the particle-laden airflow enters the inner channel 7 from the port of the thin section 21, the inner liner 6 effectively prevents the wear of the inner ring of the elbow 2, and during the period of piling in the concave portion of the flat arc section 24, the inner liner 6 is prompted to move upward. During the process, the inner wall top of the inner liner 6 always maintains the required ventilation distance from the surface of the piling layer, so that the cross-sectional area of the inner channel 7 for the airflow to pass through is maintained in a stable region (a fluctuation range of ±3cm² is allowed (the value of the area change, positive and negative is the range of constant change area being too large or too small)), avoiding the situation where the flow velocity is accelerated when the airflow passes through the inner channel 7, so that the airflow channel in the elbow 2 will not interfere with the retention of particles, and also reduces the particles appearing on the surface of the accumulation layer. The problem of particles being scraped and lost is solved, and the wear and tear on the equipment behind the air outlet of the elbow 2 is increased. Because the inner tank 6 can move with the accumulation layer, the thickness of the accumulation layer can be increased under the condition that the flow velocity in the inner channel 7 is kept in a stable state, so that more retained particles can be stored in the flat arc section 24, and then the air lock valve is opened again. While increasing the storage capacity of particles, the opening frequency of the air lock valve is also reduced, so that the equipment has the following functional effects when processing large quantities of sludge particles: ensuring the service life of the air lock valve, reducing the damage to the elbow 2, and returning more sludge particles for processing at the original number of times the air lock valve is opened, reducing the loss to other equipment.

[0044] As an embodiment further provided by the present invention, an extension section 26 is provided in the thick section 22 , which is connected to the flat arc section 24 and is located in the inner track 7 .

[0045] Specifically, the inner wall of the outer ring of the elbow 2 is integrally formed with a raised section 23 located between the flat arc section 24 and the extension section 26. The purpose is to use the raised section 23 to divide the particles accumulated at the outer ring position of the elbow 2, so that the raised section 23 is flush with the maximum height of the accumulated particle layer of the flat arc section 24.

[0046] Furthermore, the outer ring of the elbow 2 is welded with a first ash collecting bin 3 and a second ash collecting bin 31 connected thereto, and is used to collect and discharge particles downward, and the first ash collecting bin 3 is connected to the flat arc section 24, and the second ash collecting bin 31 is connected to the extension section 26. When the particles reach the position of the raised section 23, the sensor in the elbow 2 (when the material accumulates upward to the raised section 23, the sensor receives the visual or pressure signal when one side of the accumulation layer reaches the raised section 23, and converts the signal into an electrical signal in the sensor, and then transmits the electrical signal through the wire until the particles reach the raised section 23) The electrical signal enters the air lock valve, and finally the air lock valve transmits the electrical signal to the power drive component in the valve body (which can be the motor deflection power, or the electric push rod push force, or the existing structure or existing component drive known to those skilled in the art), so that the power drive component opens the valve plate, exposing the internal channel of the air lock valve to transport the particles in the two ash collecting bins downward. The sensor and the two ash collecting bins are all existing technologies and will not be described in detail here). This will trigger the air lock valve to open and release the particles in the first ash collecting bin 3 and the second ash collecting bin 31.

[0047] When the sludge particles processed by the elbow 2 exceed the above batch size, the extension section 26 can be used to accommodate more particles, and after the particles are accumulated in the second ash collecting bin 31 covering the extension section 26, the first ash collecting bin 3 and the flat arc section 24 are opened at the same time to discharge more particles, thereby allowing the elbow 2 to process more sludge particles and further reduce the opening frequency of the air lock valve.

[0048] As another embodiment further provided by the present invention, a tube seat 4 is provided on the outside of the elbow 2 , and a connecting shaft 5 which can be axially moved on the tube seat 4 is fixedly mounted on the inner liner 6 .

[0049] Specifically, the pipe seat 4 is welded to the outer wall of the inner curved ring of the elbow 2, and a sliding hole 41 (the cross section is trapezoidal, the purpose is to adapt to the deflection of the connecting shaft 5) is opened on the pipe seat 4 and connected to the elbow 2. Figure 9 As shown, a clamp 51 is provided at the lower end of the connecting shaft 5, and the clamp 51 is composed of an integrally formed annular plate and a threaded ring plate, and the lower end of the connecting shaft 5 is inserted into the circular hole 61 opened on the side wall of the inner liner 6, and then the ring plate is tightened on the inner wall of the inner liner 6, so that the clamp 51 clamps the inner liner 6, thereby ensuring that the inner liner 6 can move stably along the direction of the connecting shaft 5.

[0050] Furthermore, a plurality of screw grooves are provided on the outer wall of the inner ring of the elbow 2 and covered with a transparent cover made of quartz glass. The edge of the transparent cover port is composed of a metal ring and a sealing rubber ring, and bolts are used to fix the transparent cover port in the plurality of screw grooves, so that the transparent cover can visualize the internal parts while also sealing the sliding hole 41.

[0051] The inner liner 6 is securely mounted and connected by the connecting shaft 5 , and movement guidance is provided for the inner liner 6 , so that the inner liner 6 moves along a predetermined upward path, thereby ensuring parallel movement of the inner liner 6 and the flat arc segment 24 .

[0052] As another embodiment further provided by the present invention, a threaded sleeve 53 threadedly connected to the connecting shaft 5 is provided in the pipe seat 4 .

[0053] Specifically, a screw segment 52 obtained by integral molding is provided on the side wall of the connecting shaft 5, and the screw segment 52 and the threaded sleeve 53 are assembled, and the connection method can use traditional thread or screw connection transmission, or it can be an existing mechanism or existing component known to those skilled in the art that can realize the driven movement of the connecting shaft 5.

[0054] The inner liner 6 is located in the elbow 2 to provide an anti-rotation limit for the connecting shaft 5, so that when the threaded sleeve 53 is rotated, the connecting shaft 5 can be driven to move upward, thereby adjusting the height of the inner liner 6 in the elbow 2, so that the inner liner 6 can pre-adjust the ventilation area of the inner channel 7 (in the default state of the inner liner 6, the inner channel 7 has the minimum ventilation area, that is, the air flow rate is maximized), so that the elbow 2 can adapt to the required sludge particle throughput in advance.

[0055] As another embodiment further provided by the present invention, the sliding sleeve 55 is further provided on the outside of the threaded sleeve 53 and has a plurality of elastic members disposed between the sliding sleeve 55 and the threaded sleeve 53 .

[0056] Specifically, the outer side of the sliding sleeve 55 is designed to be a polygonal structure, which is convenient for the staff to use tools to drive it to rotate, and the inner wall of the sliding sleeve 55 is consistent with the cylindrical threaded sleeve 53. The outer wall of the threaded sleeve 53 is fixedly installed with circumferentially arranged sliders 54, and the inner wall of the sliding sleeve 55 is provided with a sliding groove 57 for the slider 54 to slide (one end of which has an opening (the opening is downward facing the inner tank 6), so that the slider 54 can slide into the opening and dock the threaded sleeve 53 and the sliding sleeve 55).

[0057] Furthermore, a spring is fixedly installed between the slider 54 and the inner wall of the other end of the slide groove 57, and one end of the spring is welded to the slider 54, and the other end is fixed to the inner wall of the slide groove 57. The elastic coefficient of the spring is greater than the elastic coefficient of the two ends below the inner liner 6 (the thrust generated by the accumulation of particles is greater than the elastic coefficient of the spring). Therefore, the spring keeps the two ends below the inner liner 6 deformed in the default state.

[0058] By utilizing the slider 54, the threaded sleeve 53 and the sliding sleeve 55 are kept integral in the circumferential direction, so that the threaded transmission connecting shaft 5 can be moved upward when the sliding sleeve 55 is rotated. In the axial direction, the connecting shaft 5 is kept integral with the threaded sleeve 53. When the connecting shaft 5 follows the inner liner 6 and is driven upward by the stacking layer, the slider 54 actively compresses the spring deformation, so that the inner liner 6 has both active and passive upward movement functions, thereby satisfying the high-efficiency particle conveying work of the inner liner 6 in the elbow 2.

[0059] As another embodiment further provided by the present invention, an arc slideway 43 is provided in the tube seat 4 for moving the sliding sleeve 55 along a predetermined arc path, and the inner liner 6 is driven to move to the extension section 26 along the arc path.

[0060] Specifically, the pipe seat 4 is fixedly mounted with symmetrically arranged side plates 42, the arc slides 43 are opened on the end faces of the side plates 42, and the two arc slides 43 are arranged opposite to each other, the end of the sliding sleeve 55 is fixedly mounted with a ring 56 that slides in the arc slide 43, and the end face of the ring 56 is fixedly mounted with a rubber ring that keeps in contact with the inner wall of the arc slide 43, so as to utilize friction to keep the sliding sleeve 55 fixed and the sliding stable.

[0061] Furthermore, the arc-shaped arc slide 43 enables the inner container 6 to remain parallel to the flat arc segment 24 when the connecting shaft 5 is adjusted to an inclined state.

[0062] By moving the sliding sleeve 55 in an arc path on the side plate 42 and tilting the lower extension section 26 of the inner liner 6, the flat arc section 24 and the extension section 26 can be piled together to drive the inner liner 6 to move obliquely upward, so as to make the inner liner 6 adapt to the accumulation of larger batches of sludge particles. In this state, the opening angles of the two ends below the inner liner 6 are larger, and the area of the air flow flowing through the inner channel 7 is also larger, which makes the deceleration of the particles more obvious, thereby improving the retention capacity of the particles and meeting the particle return work under special load conditions.

[0063] As another embodiment further provided by the present invention, it also includes an outer channel 71 arranged outside the inner channel 7, and the inner liner 6 is provided with a square hole 62 for diverting the airflow in the inner channel 7 into the outer channel 71.

[0064] Specifically, a small number of floating particles in the outer channel 71 are sent into the transparent cover through the slide hole 41, so that the staff can know the state of the particles in the elbow 2 through the transparent cover. When the particles are floating in the transparent cover, some of the particles will also enter the rubber ring on the ring 56, and the friction between the rubber ring and the arc slide 43 will be forced to increase, thereby improving the stability of the position of the sliding sleeve 55.

[0065] Furthermore, the outer channel 71 is a triangular chamber outside the inner liner 6, and the square hole 62 is located in the coarse section 22, which can make the outer channel 71 have a larger space for retaining particles. Therefore, the particles diverted from the square hole 62 have sufficient sedimentation space and deceleration, which can make the particles entering the outer channel 71 secondary separated into larger particles, so that the larger particles sink and fall into the square hole 62 until they fall into the accumulation layer. The larger particles after secondary separation that are diverted and blown through the square hole 62 are returned upward to the outer channel 71, and the secondary separation steps are repeated until the larger particles fall into the accumulation layer, making the particle separation more obvious.

[0066] The air flow through the inner channel 7 reaches the square hole 62 and is split, causing the air flow to enter the outer channel 71 obliquely upward. Since the air flow is located in the inner channel 7, larger particles will sink to the bottom first compared to smaller particles, and a slightly separated state will appear. At the same time, because the split will reduce the flow rate in the inner channel 7, an obvious particle separation state will appear at the square hole 62, that is, larger particles will sink and accumulate due to the reduction in speed, and smaller particles will be discharged along the inner wall of the arc top of the inner tank 6 and enter the outer channel 71 for separation, thereby causing a clear separation between larger particles and smaller particles, prompting the smaller particles to be discharged from the coarse section 22 first in the same time period, so that the subsequent circulation separator 13 and cyclone 14 can more conveniently distinguish when processing particles of different sizes, thereby reducing the equipment processing time and reducing the loss to the equipment behind the elbow 2.

[0067] As another embodiment further provided by the present invention, the port of the inner liner 6 is fixedly installed with a triangular end 63 that is symmetrically arranged and keeps in contact with the inner wall of the elbow 2.

[0068] Specifically, such as Figure 7 As shown, the triangular end 63 is an acute-angled elastic metal plate formed by bending the lower end of the inner liner 6 into an integral body.

[0069] By burying the triangular end 63 downward in the accumulation layer, the accumulated particles can be discharged from the elbow 2, and the inner liner 6 moves downward. During the process, the triangular end 63 uses the pointed cone to scrape the inner wall of the elbow 2, so that the particle accumulation position is scraped, further reducing the adhesion of water-containing particles on the inner wall of the elbow 2. The secondary function is to reduce the amount of discharged particles due to adhesion and agglomeration of the accumulation layer. The main function is to avoid long-term accumulation and thickening of particles, which may cause blockage of the elbow 2.

[0070] As another embodiment further provided by the present invention, an arc plate 65 is provided at the end of the triangular end 63 for cooperating with the flat arc segment 24 for stacking materials.

[0071] Specifically, the arc plate 65 is integrally formed at the bending position of the triangular end 63, and the arc-shaped bulge of the arc plate 65 is downward so that the raised arc surface contacts the surface of the stacking layer, thereby realizing the transmission of the driving force, and the arc plate 65 has a high position and a low position. The high position is connected to the triangular end 63 and is always above the surface of the stacking layer, and the horizontal distance between the two low positions is greater than the sum of the horizontal distances from the two low positions to the inner wall of the elbow 2, so the inner channel 7 can provide the particles with sufficient particle stacking area.

[0072] The surface of the stacking layer is gradually thickened to provide an upward thrust to the arc plate 65, and the arc plate 65 arranged at the lower end of the entire inner liner 6 can also have a sufficient contact surface to be pushed, ensuring the ability of the inner liner 6 to adaptively move upward as the particles accumulate, and the strip-shaped arc plate 65 can also reduce the interference caused by the airflow transporting particles in the inner channel 7. At the same time, the arc plate 65 can also block the edges on both sides of the lower stacking layer, reducing the loss of particles due to approaching the inner wall of the elbow 2.

[0073] As another embodiment further provided by the present invention, a plurality of openings 64 connected to the flat arc segment 24 are formed on the triangular end 63 .

[0074] Specifically, such as Figure 8 As shown by the middle arc arrow, and the dotted line in the figure represents the height of the material accumulation layer, the cross-sectional area of the outer channel 71 decreases as the particles accumulate, which can change the airflow velocity in the outer channel 71; the opening 64 is located at the two side walls of the triangular end 63 at different heights, and the hole side wall biased towards the raised position of the arc plate 65 is high, while the other hole side wall of the opening 64 is in the accumulation layer, so the incoming airflow will preferentially cut in obliquely downward along the raised position of the arc plate 65, causing the particles at the position of the opening 64 to be stirred, and the stirred particles have little effect on the main area where the particles are retained between the two arc plates 65 (because the arc plate 65 is at a high position above the surface of the accumulation layer, forming a ridge-like shielding), so the stirred particles are mainly close to the inner wall of the elbow 2.

[0075] The opening 64 is always buried in the accumulation layer as the particles accumulate, so that the air flow flowing in the upward opening of the triangular end 63 enters along one side of the opening 64 and turns over the particles at the opening 64, sacrificing the floating of a small amount of particles (and after floating, they will be subjected to sedimentation treatment at the diversion position, so the impact on the retained particles in the inner channel 7 is small). In return, the particles below the opening 64 transmit stirring ability to the inner wall of the elbow 2, so that during the stacking process (at this time the triangular end 63 is not scraped), the problem of particle sticking near the side wall of the elbow 2 is reduced, thereby ensuring the fluid state after the particles accumulate, and facilitating the return of the collected particles. In addition, since the area of the outer channel 71 is reduced, the flow rate of the air flow discharged from the outer channel 71 to the port of the coarse section 22 will increase, thereby widening the distance between smaller particles and larger particles, making the separation of smaller particles more obvious and subsequent processing more convenient.

[0076] Working principle: The particle-containing air flow enters the inner channel 7 from the port of the thin segment 21, causing the particles to accumulate in the depression of the flat arc segment 24 and forming an accumulation layer with a gradually thickening surface, thereby providing an upward thrust to the arc plate 65, prompting the inner liner 6 to move upward, and during the process, the inner wall top of the inner liner 6 always maintains the required ventilation distance from the surface of the pile layer, so that the cross-sectional area of the air flow passing through the inner channel 7 is maintained within a stable range, avoiding the flow rate to accelerate when the air flow passes through the inner channel 7, so that the air flow channel in the elbow 2 will not interfere with the retention of particles, and also reduce the problem of particles on the surface of the accumulation layer being scraped and lost, reducing the increased wear on the equipment behind the air outlet of the elbow 2, and because the inner liner 6 can move with the accumulation layer, the thickness of the accumulation layer can be increased under the condition that the flow rate in the inner channel 7 is kept stable, so that more retained particles can be stored in the flat arc segment 24, and then the air lock valve is opened again, which increases the storage capacity of particles while reducing the opening frequency of the air lock valve to ensure the service life of the air lock valve.

[0077] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A ventilation atomization suspension external circulation treatment device, comprising a dryer (1), characterized in that: Also includes: The elbow (2) has an inner diameter composed of a thin section (21) and a thick section (22) and is arranged in a gradient manner, and the elbow (2) is divided into an oblique arc section (25) and a flat arc section (24) according to the inner and outer diameters; The inner liner (6) has one end in contact with the inner wall of the thin segment (21), and its inner wall is arranged opposite to the flat arc segment (24) to form an inner channel (7) for air flow to pass through, wherein: The inner container (6) approaches the oblique arc section (25) along a predetermined direction, so that the distance between the inner wall of the inner container (6) and the flat arc section (24) is adjustable.

2. The ventilation atomization suspension external circulation treatment equipment according to claim 1, characterized in that: The thick section (22) is provided with an extension section (26) which is in communication with the flat arc section (24) and is located within the inner channel (7).

3. The ventilation atomization suspension external circulation treatment equipment according to claim 2, characterized in that: A tube seat (4) is provided on the outside of the elbow (2), and a connecting shaft (5) that can be axially moved on the tube seat (4) is fixedly mounted on the inner liner (6).

4. The ventilation atomization suspension external circulation treatment equipment according to claim 3 is characterized in that: A threaded sleeve (53) threadedly connected to the connecting shaft (5) is provided in the pipe seat (4).

5. The ventilation atomization suspension external circulation treatment equipment according to claim 4, characterized in that: It also includes a sliding sleeve (55) which is arranged outside the threaded sleeve (53) and has a plurality of elastic members arranged between the sliding sleeve and the threaded sleeve (53).

6. The ventilation atomization suspension external circulation treatment equipment according to claim 5, characterized in that: The tube seat (4) is provided with an arc slideway (43) for enabling the sliding sleeve (55) to move along a predetermined arc path, and the inner container (6) is driven to move to the extension section (26) along the arc movement path.

7. The ventilation atomization suspension external circulation treatment equipment according to claim 5, characterized in that: It also includes an outer channel (71) arranged outside the inner channel (7), and the inner liner (6) is provided with a square hole (62) for diverting the airflow in the inner channel (7) into the outer channel (71).

8. The ventilation atomization suspension external circulation treatment equipment according to claim 5, characterized in that: The port of the inner liner (6) is fixedly mounted with triangular ends (63) that are symmetrically arranged and in contact with the inner wall of the elbow (2).

9. The ventilation atomization suspension external circulation treatment equipment according to claim 8, characterized in that: The end of the triangular end (63) is provided with an arc plate (65) for cooperating with the flat arc segment (24) for stacking materials.

10. The ventilation atomization suspension external circulation treatment equipment according to claim 8, characterized in that: The triangular end (63) is provided with a plurality of openings (64) that are connected to the flat arc segment (24).

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