CN-122006915-A - Cyclone separation dust collector for grain drying

CN122006915ACN 122006915 ACN122006915 ACN 122006915ACN-122006915-A

Abstract

The invention provides a cyclone separation dust removal device for grain drying, which comprises a large volute separation chamber, wherein a small volute separation chamber and an air inlet structure are arranged on one side of the large volute separation chamber, an outlet of the large volute separation chamber is communicated with an inlet of the small volute separation chamber, a first mesh hole pipe is arranged in the middle of the large volute separation chamber, a second mesh hole pipe is arranged in the middle of the small volute separation chamber, at least one end of the first mesh hole pipe and at least one end of the second mesh hole pipe are communicated with the outside, the bottom of the small volute separation chamber is inclined downwards from the first end to the second end of the small volute separation chamber, and an ash outlet structure is arranged at the second end of the small volute separation chamber. By adopting the invention, the small volute separation chamber is arranged at the outlet side of the large volute separation chamber and is connected with the large volute separation chamber, so that secondary cyclone separation dust removal is realized, air flows into the small volute separation chamber along inertia, air flow resistance is small, energy consumption is low, the manufacturing cost and occupied area of the dust removal system are reduced, and the dust removal efficiency is improved.

Inventors

GAO RUILI
DONG ZHIQIANG
JIA MENGAN
SUN KANGNING

Assignees

潍柴雷沃智慧农业科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260330

Claims (10)

1. The cyclone separation dust removal device for grain drying is characterized by comprising a large volute separation chamber (1), wherein a small volute separation chamber (2) and an air inlet structure are arranged on one side of the large volute separation chamber (1), an outlet of the air inlet structure is tangential to and communicated with an inlet of the large volute separation chamber (1), an outlet of the large volute separation chamber (1) is communicated with an inlet of the small volute separation chamber (2), a first mesh pipe (3) is arranged in the middle of the large volute separation chamber (1), a second mesh pipe (4) is arranged in the middle of the small volute separation chamber (2), at least one end of the first mesh pipe (3) and at least one end of the second mesh pipe (4) are communicated with the outside, the bottom of the small volute separation chamber (2) is inclined downwards from the first end to the second end, and an ash outlet structure communicated with the bottom of the small volute separation chamber (2) is arranged at the second end of the small volute separation chamber.
2. The cyclone separation dust removal device for grain drying, which is characterized in that a cyclone cylinder (5) is further arranged in the middle of the large volute separation chamber (1), two ends of the cyclone cylinder (5) are in one-to-one correspondence and are connected with two ends of the large volute separation chamber (1), meshes are formed in the cyclone cylinder (5), and the first mesh tube (3) is positioned in the cyclone cylinder (5).
3. The cyclone dust removing apparatus for drying grain according to claim 2, wherein the distance between the outer wall of the cyclone (5) and the inner wall of the large volute separation chamber (1) is gradually narrowed along the inlet-to-outlet direction of the large volute separation chamber (1).
4. The cyclone separation dust collector for grain drying, as claimed in claim 1, wherein the small volute separation chamber (2) comprises an arc-shaped inclined plate (6) and a volute opening bent plate (7), wherein two sides of a bent part of the volute opening bent plate (7) are respectively provided with a first area and a second area, the first area of the volute opening bent plate (7) is matched with an arc surface of the arc-shaped inclined plate (6) and is connected with a first edge of the arc-shaped inclined plate (6), the second area of the volute opening bent plate (7) is matched with an arc surface of an outlet side wall of the large volute separation chamber (1) and is connected with an outlet side wall of the large volute separation chamber (1), and a gap between the second edge of the arc-shaped inclined plate (6) and the bent part of the volute opening bent plate (7) forms an inlet of the small volute separation chamber (2).
5. The cyclone dust collector for grain drying of claim 4, wherein the distance between the second edge of the arc-shaped inclined plate (6) and the second mesh tube (4) is greater than the distance between the bent part of the volute port bent plate (7) and the second mesh tube (4), and the distance between the arc-shaped inclined plate (6) and the second mesh tube (4) is gradually narrowed along the direction from the second edge to the first edge of the arc-shaped inclined plate (6).
6. The cyclone separation dust collector for grain drying according to claim 4, wherein end plates (8) are fixed at both ends of the large volute separation chamber (1) and both ends of the small volute separation chamber (2), the end plates (8) of the large volute separation chamber (1) and the end plates (8) of the small volute separation chamber (2) are in one-to-one correspondence and are detachably connected, and a second area of the volute opening bending plate (7) is detachably connected with the outlet side wall of the large volute separation chamber (1).
7. The cyclone dust collector for grain drying according to any one of claims 1 to 6, wherein mesh pipe supports (9) are respectively arranged on the inner walls of the end parts of the large volute separation chamber (1) and the small volute separation chamber (2), and the first mesh pipe (3) and the second mesh pipe (4) are respectively arranged on the corresponding mesh pipe supports (9).
8. The cyclone separation dust collector for grain drying, as set forth in claim 7, characterized in that the same end of the large volute separation chamber (1) and the small volute separation chamber (2) is further provided with a return air bent pipe (10), one end of the return air bent pipe (10) is connected with the first mesh pipe (3), the other end of the return air bent pipe (10) is connected with the second mesh pipe (4), one end of the second mesh pipe (4) far away from the return air bent pipe (10) is closed, one end of the first mesh pipe (3) far away from the return air bent pipe (10) is communicated with the outside, a rain cover (11) is fixed on the large volute separation chamber (1), and the rain cover (11) is located above one end of the first mesh pipe (3) far away from the return air bent pipe (10).
9. The cyclone dust removing apparatus for grain drying according to claim 1, wherein the air inlet structure comprises a fan (12), a conical air pipe (13) and a main air pipe (14), wherein the small end of the conical air pipe (13) is connected with the outlet of the fan (12), the large end of the conical air pipe (13) is connected with the first end of the main air pipe (14), and the second end of the main air pipe (14) is connected with the inlet of the large volute separation chamber (1).
10. The cyclone dust removing device for grain drying according to claim 1, wherein the dust discharging structure comprises a dust discharging hopper (15), the dust discharging hopper (15) is fixed at the second end of the small volute separating chamber (2) and is communicated with the bottom of the small volute separating chamber (2), an outlet of the dust discharging hopper (15) is connected with a dust discharging valve (16), and an outlet end of the dust discharging valve (16) is connected with a dust discharging pipe (17).

Description

Cyclone separation dust collector for grain drying Technical Field The invention relates to the technical field of grain drying dust removal devices, in particular to a cyclone separation dust removal device for grain drying. Background The grain is highly liable to mildew after harvest, and the quality and the processing property are improved by adopting a drying treatment. At present, the grain dryer mainly adopts a positive pressure or negative pressure air supply mode to dry, and dry waste gas contains a large amount of impurities, and if the waste gas is directly discharged into the air, dust pollution can be caused, the waste gas does not meet the environmental protection requirements, and common grain drying and dust removing modes include ash house sedimentation, pulse dust removal, cyclone dust remover, cloth bag dust removal and the like. The existing cyclone dust collector mainly comprises an air inlet pipe, a cyclone cylinder, a dust outlet pipe, an exhaust pipe and other parts, wherein the cyclone cylinder is designed into a structure type of an upper cylinder body and a lower cone body. When cyclone dust is removed, dust-containing gas enters the upper cylinder body tangentially from the air inlet pipe to form an external rotational flow which rotates downwards and generates centrifugal force, then flows upwards from the lower end of the exhaust pipe at the axle center to enter the exhaust pipe and is discharged from the upper end of the exhaust pipe, dust in the cyclone is thrown to the inner wall of the cyclone under the action of the centrifugal force, and gradually accumulated dust is discharged from the dust outlet pipe at the lower end of the lower cone under the action of gravity. Cyclone dust collectors generally have better dust removal efficiency for large particle dust and lower dust collection efficiency for fine dust, and for this reason, a plurality of cyclone dust collectors are generally designed in series on an operation site to improve dust removal efficiency. However, the complicated pipeline connection is caused, so that the gas flow resistance is increased, the energy consumption is increased, and the whole dust removal system has the advantages of increased manufacturing cost, large occupied area and difficult maintenance. Disclosure of Invention In order to solve at least one technical problem, the invention provides a cyclone separation dust removal device for grain drying. The technical scheme for solving the technical problems is as follows: The invention provides a cyclone separation dust removal device for grain drying, which comprises a large volute separation chamber, wherein a small volute separation chamber and an air inlet structure are arranged on one side of the large volute separation chamber, an outlet of the air inlet structure is tangential to and communicated with an inlet of the large volute separation chamber, an outlet of the large volute separation chamber is communicated with an inlet of the small volute separation chamber, a first mesh pipe is arranged in the middle of the large volute separation chamber, a second mesh pipe is arranged in the middle of the small volute separation chamber, at least one end of the first mesh pipe and at least one end of the second mesh pipe are communicated with the outside, the bottom of the small volute separation chamber is inclined downwards from the first end to the second end, and an ash discharging structure communicated with the bottom of the small volute separation chamber is arranged at the second end of the small volute separation chamber. The beneficial effects of the invention are as follows: The invention has the advantages that the small volute separation chamber is arranged at the outlet side of the large volute separation chamber and is connected with the large volute separation chamber, dust-containing gas can flow into the small volute separation chamber along inertia after being separated and removed for the first time through the large volute separation chamber, the secondary cyclone separation dust removal is realized, the airflow resistance is small, the energy consumption is low, the manufacturing cost and the occupied area of a dust removal system are reduced, the dust removal efficiency is improved, meanwhile, the air flow is gradually increased along with the reduction of the flow and the increase of the dust proportion through the use and the matching of the volutes in the whole process of the large volute separation chamber to the small volute separation chamber, the angular velocity of the air flow is further increased, the separation efficiency is improved, the inner layer gas which is close to a mesh pipe along the air flow direction always reaches the standard, the reliability is good, the environmental pollution is reduced, in addition, the dust is thrown to the outer layer of a runner under the action of inertia and centrifugal force through the mesh holes, the dust is separated aga