Conical air separator

Abstract

The present invention discloses a conical air separator, comprising an upper cone bucket, a material-blocking straight pipe fixedly connected to the lower port of the upper cone bucket, a support rod group fixedly installed on the inner side wall of the material-blocking straight pipe, a material-leveling impeller assembly rotatably connected to the upper end of the support rod group, a feed pipe fixedly connected to the side of the upper cone bucket, a suction cone pipe fixedly connected to the outer side of the upper cone bucket at the upper port, a vent plate fixedly connected to the lower port of the suction cone pipe at the upper end, a discharge cone bucket fixedly connected to the lower end of the vent plate, and a support leg fixedly connected to the outer side of the discharge cone bucket; the discharge port of the feed pipe is located above the material-leveling impeller assembly; the upper end of the upper cone bucket is fixedly connected with a suction port; the lower end of the discharge cone bucket is fixedly connected with a discharge straight pipe. The material-leveling impeller assembly of the present invention can make the bundled materials spread out and dispersed, and has a good separation effect on light impurities in the materials, thereby improving the fineness of the air-separated materials of the air separator; the height of the impeller and the feed pipe discharge port can be adjusted, which is suitable for air separation of materials of different specific gravities.

Description

Technical Field

[0001] The invention relates to the technical field of grain processing equipment, and in particular to a conical air separator used for separating light impurities in grain. Background Art

[0002] The air separator is a commonly used equipment in the grain processing process. It can blow away low-gravity impurities such as husks and dust in the grain through wind, thereby separating the impurities from the grain particles, ensuring the environmental hygiene in the workshop and improving the dust removal efficiency of the subsequent processes.

[0003] Most of the air selectors in the prior art use multiple alternating baffle plates to flow materials multiple times to separate light impurities from grain particles, and then the impurities are sucked away by a negative pressure fan; the air selector structure in the prior art has the following problems: the bundled grain materials hit the baffle plates, the material dispersion effect is poor, and the light impurities therein are not completely separated, which leads to the grain materials after air selection still having a large amount of light impurities such as bran, which is not suitable for refined grains that require a low impurity content; the position of the baffle plates of the existing air selectors cannot be adjusted, and it is difficult to ensure the air selection effect for materials of different specific gravities; the feed pipes of the air selectors in the prior art are mostly fixed-length pipes, the feed pipes cannot be telescopically adjusted, the feed port position is fixed, and the feed outlet position of the feed pipe cannot be adjusted, making it difficult to ensure that the material outlet is located above the air selector impeller, and the material outlet cannot rotate, making it inconvenient to adjust the material center to a position relative to the center of the air selector impeller. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a conical air separator, which has a good effect of separating light impurities in materials, and the heights of the impeller and the feed pipe outlet are adjustable, and is suitable for air separation of materials with different specific gravities.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A conical air separator comprises an upper cone bucket, a material blocking straight pipe fixedly connected to the lower port of the upper cone bucket, and a

[0007] A support rod group on the inner wall of the straight tube, a material leveling impeller assembly rotatably connected to the upper end of the support rod group, a feed pipe fixedly connected to the side of the upper cone bucket, an air suction cone tube with an upper end fixedly connected to the outer side of the upper cone bucket, an air permeable plate with an upper end fixedly connected to the lower end of the air permeable plate, a discharge cone bucket fixedly connected to the lower end of the air permeable plate and located below the material blocking straight tube, and a support leg fixedly connected to the outer side of the discharge cone bucket;

[0008] The discharge port of the feed pipe is located above the material mixing impeller assembly;

[0009] The upper end of the upper cone bucket is fixedly connected with an air suction port, and an air regulating plate is rotatably connected in the air suction port;

[0010] The lower end of the discharge cone hopper is fixedly connected with a discharge straight pipe.

[0011] As a further improvement of the present invention, the support rod assembly includes a main shaft rotatably connected to the bottom of the material mixing impeller assembly, a fixing seat fixedly connected to the middle of the main shaft, and a support rod with one end fixedly connected to the fixing seat and perpendicular to the main shaft;

[0012] The main shaft is a threaded rod, and a threaded hole threadedly connected to the threaded rod is provided in the middle of the fixing seat;

[0013] A positioning screw hole is provided on the side of the fixing seat, and a positioning screw is connected to the inner thread of the positioning screw hole. The end of the positioning screw is pressed against the main shaft to position the main shaft.

[0014] As a further improvement of the present invention, a mounting plate is fixedly connected to the support rod, and the mounting plate is fixedly connected to the inner side of the material blocking straight pipe by fixing screws;

[0015] The lower side of the main shaft is fixedly connected with a rotating rod.

[0016] As a further improvement of the present invention, the material mixing impeller assembly includes a disc, a bulking cone coaxially fixedly mounted on the upper end surface of the disc, a plurality of blades coaxially with the disc and fixedly connected to the outer side of the disc at intervals, and a bearing sleeve fixedly mounted at the center of the disc; the upper end of the main shaft is rotatably connected in the bearing sleeve and is located below the disc.

[0017] As a further improvement of the present invention, the bulk cone is fixedly connected to the disc by means of a fastening screw;

[0018] The outer edge of the bottom of the bulk material cone is in contact with the outer edge of the disc;

[0019] The cone top of the bulk material cone is provided with a cone top through hole, and the fixing screw of the fastening screw passes through the cone top through hole and is fixedly connected to the center of the disc. The outer diameter of the nut of the fastening screw is larger than the aperture of the through hole, and the nut is fastened above the cone top.

[0020] As a further improvement of the present invention, a compression sleeve is sleeved in the cone top through hole of the bulk material cone, and the nut of the fastening screw presses and fixes the compression sleeve at the cone top through hole;

[0021] The blades are arc-shaped pieces, and a plurality of arc-shaped pieces are arranged in an annular array on the outer side of the disc.

[0022] As a further improvement of the present invention, the feed pipe includes a feed straight pipe fixed to the outer side of the air selector, a feed sleeve whose upper half is sleeved in the feed straight pipe and whose lower half is located in the air selector, long holes on both sides of the feed straight pipe along the axial direction of the feed sleeve, and a fixing pin fixedly connected to the side of the feed sleeve;

[0023] The fixing pin is located in the long hole, and the outer end of the fixing pin is fixedly connected to a rotating sleeve located outside the feed straight pipe.

[0024] As a further improvement of the present invention, the upper end of the feed straight pipe is fixedly connected with a reducer;

[0025] The lower port of the feed sleeve is fixedly connected with an elbow pipe, and the lower port of the elbow pipe is located above the material mixing impeller of the conical air separator.

[0026] As a further improvement of the present invention, an eccentric material flow port body is fixedly connected to the lower port of the elbow pipe;

[0027] The lower port of the elbow pipe is fixedly connected with an upper flange, and the upper port of the eccentric material chute body is fixedly connected with a lower flange opposite to the upper flange; the upper flange and the lower flange are fixedly connected by a pipe clamp;

[0028] The eccentric material chute body is formed by fixing and connecting half of a straight tube and half of an inclined tube;

[0029] The lower port diameter of the eccentric material flow port body is smaller than the upper port diameter.

[0030] As a further improvement of the present invention, the air regulating plate is fixedly connected to a damper shaft located in the air suction port, the damper shaft is rotatably connected to the side wall of the air suction port, and one end of the damper shaft is fixedly connected to a damper handle located outside the air suction port;

[0031] An observation window is provided on the side of the upper cone bucket, and a transparent tempered glass is fixedly installed on the observation window.

[0032] The beneficial effects of adopting the above technical solution are:

[0033] The fixing seat of the support rod assembly of the present invention is threadedly connected to the middle part of the main shaft, and the fixing seat is fixedly connected to the material blocking tube of the air selector by the support rod. The height of the main shaft is adjusted by rotating the rotating rod, and the main shaft drives the bulk material cone on the disc and the bulk material cone to adjust up and down in the height direction, thereby changing the distance between the inlet of the air selector and the material mixing impeller assembly, which is suitable for graded air selection of materials with different specific gravities; the material mixing impeller assembly is assembled under the inlet of the conical air selector, and when the grain material is air selected, the bundled materials at the inlet are dispersed and spread on the conical surface of the bulk material cone, so that the thickness of the materials around is consistent and uniform, and the materials sliding down on the conical surface of the bulk material cone push the blades to rotate continuously. During the rotation of the blades, the materials are thrown to the surroundings, and the heavy materials flow out from the discharge port by their own gravity, while the light impurities such as husks in the grain material are fully separated from the heavy materials during the material throwing process, and then the light impurities such as husks are sucked away by the induced air negative pressure of the air selector, thereby improving The fineness of the material after air separation by the air separator; the feed pipe adopts a double-layer tube structure, the outer feed straight tube is fixedly connected to the outside of the air separator, and the inner feed sleeve is sleeved in the feed straight tube, and the fixing pin fixed on the outside of the feed sleeve slides in the long hole on the side of the feed straight tube, thereby driving the feed sleeve to telescope and adjust its length in the air separator, changing the position of the feed sleeve outlet in the air separator, ensuring that the feed sleeve outlet is located above the impeller, and fixing the eccentric chute body at the lower end of the feed sleeve through a pipe clamp, loosening the pipe clamp, rotating the eccentric chute body, adjusting the material discharge position, ensuring that the material is aligned with the center of the air separator impeller, and then tightening the pipe clamp, fixing the upper flange of the lower end of the feed sleeve and the lower flange of the eccentric chute body, keeping the lower end of the eccentric chute body aligned with the center of the air separator impeller and no longer rotating, the conical air separator reaches the best feeding position, and improves the material air separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0037] Figure 3 It is a structural schematic diagram of the material mixing impeller assembly of the present invention;

[0038] Figure 4 It is a schematic cross-sectional view of the material leveling impeller assembly of the present invention;

[0039] Figure 5It is a schematic diagram of the assembly structure of the feed pipe and the eccentric feed outlet of the present invention;

[0040] Figure 6 This is a schematic structural diagram of an eccentric material outlet of the present invention;

[0041] Figure 7 It is a schematic diagram of the structure of the feed pipe of the present invention;

[0042] Figure 8 It is a schematic diagram of the cross-sectional structure of the feed pipe of the present invention.

[0043] in:

[0044] 1 support leg, 2 discharge cone bucket, 3 discharge straight pipe, 4 breathable plate, 5 suction cone pipe, 6 upper cone bucket, 7 suction port, 8 damper handle, 9 observation window, 10 material blocking straight pipe, 11 bulk material cone, 12 blades, 13 main shaft, 14 fixed seat, 15 support rod, 16 mounting plate, 17 fixing screw, 18 clamping sleeve, 19 nut, 111 rotating rod, 112 bearing sleeve, 113 disc, 114 fixing screw, 115 positioning screw hole, 116 positioning screw, 20 feed pipe, 21 feed straight pipe, 22 feed sleeve, 23 rotating sleeve, 24 fixing pin, 25 reducer, 26 elbow pipe, 27 pipe clamp, 28 long hole, 30 eccentric chute body, 31 half straight pipe, 32 half inclined pipe, 33 pipe clamp, 81 damper shaft. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0048] like Figure 1-2 As shown,

[0049] A conical air separator, comprising an upper cone bucket 6, a material blocking straight pipe 10 fixedly connected to the lower end of the upper cone bucket 6, a support rod group fixedly installed on the inner side wall of the material blocking straight pipe 10, a material leveling impeller assembly rotatably connected to the upper end of the support rod group, a feed pipe 20 fixedly connected to the side of the upper cone bucket 6, an air suction cone pipe 5 whose upper end is fixedly connected to the outer side of the upper cone bucket 6, an air permeable plate 4 whose upper end is fixedly connected to the lower end of the air permeable plate 4 and located below the material blocking straight pipe 10, and a support leg 1 fixedly connected to the outer side of the discharge cone bucket 2;

[0050] The air permeable plate 4 provides an air inlet for the air selector to maintain the wind pressure balance in the air selector.

[0051] The discharge port of the feed pipe 20 is located above the material mixing impeller assembly;

[0052] The upper end of the upper cone bucket 6 is fixedly connected with an air suction port 7, and an air regulating plate is rotatably connected in the air suction port 7;

[0053] The lower end of the discharge cone hopper 2 is fixedly connected with a discharge straight pipe 3.

[0054] like Figure 3-4 As shown,

[0055] The support rod assembly includes a main shaft 13 rotatably connected to the bottom of the material mixing impeller assembly, a fixing seat 14 fixedly connected to the middle of the main shaft 13, and a support rod 15 with one end fixedly connected to the fixing seat 14 and perpendicular to the main shaft 13;

[0056] The main shaft 13 is a threaded rod, and a threaded hole threadedly connected to the threaded rod is provided in the middle of the fixing seat 14;

[0057] A positioning screw hole 115 is formed on the side of the fixing seat 14 . A positioning screw 116 is internally threadedly connected to the positioning screw hole 115 . The end of the positioning screw 116 is pressed against the main shaft 13 for positioning.

[0058] The fixing seat 14 is a regular hexahedron, the number of the supporting rods 15 is three, and the positioning screw hole 115 is located at the side of the regular hexahedron between the two supporting rods 15;

[0059] The included angles between the two support rods 15 are all 120 degrees, forming a triangular support for the main shaft 13, which is more stable.

[0060] Furthermore, a mounting plate 16 is fixedly connected to the support rod 15, and the mounting plate 16 is fixedly connected to the inner side of the material blocking straight pipe 10 by fixing screws 17;

[0061] A rotating rod 111 is fixedly connected to the lower side of the main shaft 13 , and the height of the main shaft 13 can be adjusted by rotating the rotating rod 111 .

[0062] Furthermore, the material mixing impeller assembly includes a disc 113, a material dispersing cone 11 fixedly mounted coaxially on the upper end surface of the disc 113, a plurality of blades 12 coaxially with the disc 113 and fixedly connected to the outer side of the disc 113 at intervals, and a bearing sleeve 112 fixedly mounted at the center of the disc 113;

[0063] Preferably, the bearing sleeve 112 is a deep groove ball bearing.

[0064] The upper end of the main shaft 13 is rotatably connected in the bearing sleeve 112 and is located below the disc 113 .

[0065] Furthermore, the bulk cone 11 is fixedly connected to the disc 113 by means of fastening screws;

[0066] The outer edge of the bottom of the bulk cone 11 is in contact with the outer edge of the disc 113;

[0067] The cone top of the bulk material cone 11 is provided with a cone top through hole, and the fixing screw 114 of the fastening screw passes through the cone top through hole and is fixedly connected to the center of the disk 113. The outer diameter of the nut 19 of the fastening screw is larger than the aperture of the through hole, and the nut 19 is fastened above the cone top.

[0068] Furthermore, a compression sleeve 18 is installed in the cone top hole of the bulk material cone 11. Specifically, the sleeve body 7 of the compression sleeve 18 is located in the cone top hole, and the outer edge of the upper end of the sleeve body is located outside the cone top hole. The nut 19 of the fastening screw presses and fixes the outer edge of the compression sleeve 18 to the outside of the cone top hole.

[0069] The blades 12 are arc-shaped pieces, each of which is fixedly connected to the disc 113 obliquely to form an acute angle. A plurality of arc-shaped pieces are arranged in an annular array on the outer side of the disc 113 and are lower than the disc 113 . The number of the arc-shaped pieces is at least 8.

[0070] like Figure 5-8 As shown,

[0071] The feed pipe 20 includes a feed straight pipe 21 fixed to the outer side of the air selector, a feed sleeve 22 with the upper half inserted into the feed straight pipe 21 and the lower half located in the air selector, long holes 28 opened on both sides of the feed straight pipe 21 along the axial direction of the feed sleeve 22, and a fixing pin 24 fixedly connected to the side of the feed sleeve 22;

[0072] Preferably, the feed straight pipe 21 is fixed obliquely to the outer side of the air separator so that the material flows downward due to its own weight;

[0073] The fixing pin 24 is located in the long hole 28, and the outer end of the fixing pin 24 is fixedly connected to a rotating sleeve 23 located outside the feed straight pipe 21, and the rotating sleeve 23 is convenient for people to hold and rotate.

[0074] Furthermore, a reducing pipe 25 is fixedly connected to the upper end of the feed straight pipe 21 to facilitate connection with the feed delivery pipeline.

[0075] The lower end of the feed sleeve 22 is fixedly connected with an elbow pipe 26 , and the lower end of the elbow pipe 26 is located above the material mixing impeller of the conical air separator.

[0076] Furthermore, an eccentric material flow port body 30 is fixedly connected to the lower end of the elbow pipe 26;

[0077] The lower end of the elbow pipe 26 is fixedly connected with an upper flange, and the upper end of the eccentric material chute body 30 is fixedly connected with a lower flange opposite to the upper flange; the upper flange and the lower flange are fixedly connected by a pipe clamp 33;

[0078] The eccentric material chute body 30 is formed by fixing and docking half of a straight tube and half of an inclined tube;

[0079] The lower port diameter of the eccentric material flow port body 30 is smaller than the upper port diameter.

[0080] Furthermore, the air regulating plate is fixedly connected to a damper shaft 81 located inside the air suction port 7, and the damper shaft 81 is rotatably connected to the side wall of the air suction port 7, and one end of the damper shaft 81 is fixedly connected to a damper handle 8 located outside the air suction port 7; the angle of the air regulating plate is adjusted by rotating the damper handle 8, thereby adjusting the air intake volume.

[0081] An observation window 9 is provided on the side of the upper cone hopper 6, and a transparent tempered glass is fixedly installed on the observation window 9 to facilitate observation of the working conditions in the air selector.

[0082] The fixed seat 14 of the support rod group of the present invention is threadedly connected to the middle part of the main shaft 13, and the fixed seat 14 is fixedly connected to the material blocking straight tube 10 of the air separator by the support rod 15. The height of the main shaft 14 is adjusted by rotating the rotating rod 111. The main shaft 14 drives the bulk cone 11 and the blades 12 on the disc 113 to adjust up and down in the height direction, thereby changing the distance between the feed port of the air separator and the material mixing impeller assembly, which is suitable for graded air separation of materials with different specific gravities.

[0083] The material leveling impeller assembly is assembled below the discharge port of the feed pipe 20. When the grain material is air-selected, the bundled material at the feed port is dispersed and spread on the conical surface of the bulk cone 11, so that the thickness of the material around is uniform. The material sliding down the conical surface of the bulk cone 11 pushes the blades 12 to rotate continuously. During the rotation of the blades 12, the material is thrown around. The heavy material falls into the discharge cone bucket 2 by its own gravity and flows out of the air separator from the discharge straight pipe 3. The light impurities such as husks in the grain material are fully separated from the heavy material during the material scattering process, and the light impurities such as husks are sucked away by the negative pressure provided by the suction port 7, thereby improving the fineness of the material after air separation by the air separator. The feed pipe 20 adopts a double-layer pipe structure, the outer layer of the feed straight pipe 21 is fixedly connected to the outer side of the upper cone bucket 6, the inner layer of the feed sleeve 22 is sleeved in the feed straight pipe 21, and the fixing pin 24 fixed on the outer side of the feed sleeve 22 slides in the long hole 28 on the side of the feed straight pipe 21, thereby driving the feed sleeve 22 to adjust the length in the upper cone bucket 6, changing the position of the feed sleeve 22 outlet in the upper cone bucket 6, ensuring that the feed sleeve 22 outlet is located above the impeller, and the feed sleeve 22 is connected to the upper cone bucket 6 through the pipe at the lower end of the feed sleeve 22. The clamp 27 is fixedly connected to the eccentric material chute body 30, the pipe clamp 27 is loosened, the eccentric material chute body 30 is rotated, and the material discharge position 8 is adjusted to ensure that the material is aligned with the center of the impeller of the air separator (i.e., the center of the bulk material cone 11), and then the pipe clamp 27 is tightened to fix the upper flange of the lower port of the feed sleeve 22 and the lower flange of the eccentric material chute body 30. The lower port of the eccentric material chute body 30 is kept aligned with the center of the bulk material cone 11 and no longer rotated. The conical air separator reaches the best feeding position and the material air separation effect is improved.

Claims

1. A conical air separator, characterized in that: It comprises an upper cone bucket (6), a material blocking straight pipe (10) fixedly connected to the lower end of the upper cone bucket (6), a support rod group fixedly installed on the inner side wall of the material blocking straight pipe (10), a material leveling impeller assembly rotatably connected to the upper end of the support rod group, an inlet pipe (20) fixedly connected to the side of the upper cone bucket (6), an air suction cone pipe (5) whose upper end is fixedly connected to the outer side of the upper cone bucket (6), a vent plate (4) whose upper end is fixedly connected to the lower end of the vent plate (4) and located below the material blocking straight pipe (10), and a support leg (1) fixedly connected to the outer side of the material discharge cone bucket (2); The discharge port of the feed pipe (20) is located above the material mixing impeller assembly; The upper end of the upper cone bucket (6) is fixedly connected to an air suction port (7), and an air regulating plate is rotatably connected inside the air suction port (7); The lower end of the discharge cone hopper (2) is fixedly connected to a discharge straight pipe (3); The support rod assembly comprises a main shaft (13) rotatably connected below the material mixing impeller assembly, a fixing seat (14) fixedly connected to the middle of the main shaft (13), and a support rod (15) having one end fixedly connected to the fixing seat (14) and perpendicular to the main shaft (13); The main shaft (13) is a threaded rod, and a threaded hole threadably connected to the threaded rod is provided in the middle of the fixing seat (14); A positioning screw hole (115) is provided on the side of the fixing seat (14), and a positioning screw (116) is connected to the inner thread of the positioning screw hole (115), and the end of the positioning screw (116) is pressed against the main shaft (13) for positioning; A mounting plate (16) is fixedly connected to the support rod (15), and the mounting plate (16) is fixedly connected to the inner side of the material blocking straight pipe (10) via fixing screws (17); A rotating rod (111) is fixedly connected to the lower side of the main shaft (13); The material mixing impeller assembly comprises a disc (113), a material dispersing cone (11) coaxially fixedly mounted on the upper end surface of the disc (113), and a plurality of blades (12) coaxially with the disc (113) and fixedly connected to the outer side of the disc (113) at intervals. The feed pipe (20) comprises a feed straight pipe (21) fixed to the outer side of the air separator, a feed sleeve (22) with its upper half sleeved inside the feed straight pipe (21) and its lower half located inside the air separator, long holes (28) provided on both sides of the feed straight pipe (21) along the axial direction of the feed sleeve (22), and a fixing pin (24) fixedly connected to the side of the feed sleeve (22); the fixing pin (24) is located in the long hole (28), and the outer end of the fixing pin (24) is fixedly connected to a rotating sleeve (23) located outside the feed straight pipe (21); The upper end of the feed straight pipe (21) is fixedly connected to a reducer (25); the lower end of the feed sleeve (22) is fixedly connected to an elbow pipe (26), and the lower end of the elbow pipe (26) is located above the material mixing impeller of the conical air separator; An eccentric material chute body (30) is fixedly connected to the lower end of the elbow pipe (26); The lower end of the elbow pipe (26) is fixedly connected to an upper flange, and the upper end of the eccentric material chute body (30) is fixedly connected to a lower flange opposite to the upper flange; the upper flange and the lower flange are fixedly connected by a pipe clamp (33); The eccentric material chute body (30) is formed by fixing and butting half of a straight tube and half of an inclined tube; The diameter of the lower port of the eccentric material flow port body (30) is smaller than the diameter of the upper port; The feed pipe (20) adopts a double-layer pipe structure.

2. A conical air separator according to claim 1, characterized in that: The air regulating plate is fixedly connected to a damper shaft (81) located in the air suction port (7); the damper shaft (81) is rotatably connected to a side wall of the air suction port (7); one end of the damper shaft (81) is fixedly connected to a damper handle (8) located outside the air suction port (7); an observation window (9) is provided on the side of the upper cone bucket (6); and a transparent tempered glass is fixedly mounted on the observation window (9).

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