Spinning type centrifugal dust remover

Abstract

A self-rotating type centrifugal dust remover comprises a machine body, and an air purifying chamber, a filtering chamber and a dust collecting chamber are sequentially arranged in the machine body from top to bottom. The center of the filter chamber is rotationally connected with an exhaust flue, a smoke inlet of the exhaust flue is communicated with an air inlet pipe, a smoke outlet of the exhaust flue is formed in the circumferential surface of the exhaust flue, and the smoke outlet is formed in the tangential direction of the circumferential surface of the exhaust flue and inclines downwards; a plurality of centrifugal cylinders are arranged on the outer side of the exhaust flue in a surrounding manner, the plurality of centrifugal cylinders and the filter chamber are relatively fixed, air inlet openings are formed in the circumferential surfaces of the upper parts of the centrifugal cylinders facing the exhaust flue, and the inner walls of the lower parts of the centrifugal cylinders are arranged to be inverted conical; a plurality of filter elements corresponding to the centrifugal cylinders are connected to the sealing surface between the air purifying chamber and the filtering chamber in a penetrating manner. Before the dust is intercepted by the filter element, the dust in the flue gas is removed to the greatest extent, so that the load of the filter element is reduced, the blockage time of the filter element is prolonged, the equipment cost and the maintenance cost are reduced, and the occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, specifically to a spin centrifugal dust collector. Background Art

[0002] Cartridge (bag) dust collectors are now widely used for dust control and collection in various industries. However, when handling high-concentration dust, current cartridge dust collectors require the majority of dust in the flue gas to be filtered and intercepted by the filter elements. Limited by the filter area, these elements often clog quickly, disrupting production. To avoid this problem, dust collectors are designed with larger filter areas and lower filtration velocities to improve dust interception capacity and ensure long-term stable operation of the production system. However, this design incurs significant design and maintenance costs, and the dust collectors occupy a very large space.

[0003] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0004] The purpose of this invention is to provide a self-rotating centrifugal dust collector.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A self-rotating centrifugal dust collector includes a body, the inside of which, from top to bottom, are arranged a clean air chamber, a filter chamber, and a dust collection chamber;

[0007] The filter chamber is rotatably connected to a flue, the flue's inlet is connected to an air inlet pipe, and the flue's outlet is located on the circumference of the flue, which is arranged along the tangent of the flue's circumference and tilted downwards.

[0008] A plurality of centrifuge cylinders are arranged around the outer side of the exhaust flue. The centrifuge cylinders are fixed relative to the filter chamber. The centrifuge cylinders are open at both the top and bottom ends, and the upper opening is in contact with the top surface of the filter chamber. The centrifuge cylinders are sealed to the periphery of the exhaust flue. An air inlet is provided on the upper periphery of the centrifuge cylinder facing the exhaust flue. The lower inner wall of the centrifuge cylinder is set as an inverted cone shape.

[0009] Several filter elements are connected through the sealing surface between the clean air chamber and the filter chamber, corresponding to each centrifuge cylinder. The clean air chamber and the filter chamber are connected through several filter elements, and the clean air chamber is connected to an exhaust pipe.

[0010] Preferably, an air inlet duct is provided at the lower smoke inlet of the exhaust duct. The air inlet duct is fixed relative to the filter chamber. The exhaust duct is rotatably connected to and communicates with the air inlet duct through a bearing. The bottom end of the air inlet duct is connected to an air inlet pipe, which extends through the body to the outside.

[0011] In a further preferred embodiment, the sides of the air inlet openings of each centrifuge cylinder are connected end to end to form a sealed circumferential surface. The top of the air inlet flue is connected to the lower part of each centrifuge cylinder by a sealing plate. The sealing plate is connected to the lower edge of the sealed circumferential surface, thereby forming a circumferential seal between the centrifuge cylinders and the exhaust flue.

[0012] Preferably, a plurality of mounting holes are provided on the sealing surface between the air purification chamber and the filter chamber corresponding to each of the filter elements, and the top end of the filter element is engaged with the upper edge of the mounting hole, and the bottom end extends into the centrifuge cylinder.

[0013] In a further preferred embodiment, the spin centrifugal dust collector also includes a jet cleaning system, which includes a jet pipe. One end of the jet pipe is connected to an external compressed air tank, and the other end extends into the clean air chamber and is connected to multiple jet cleaning branch pipes. Each of the multiple jet cleaning branch pipes corresponds to a number of filter elements.

[0014] In a further technical solution, the jetting system also includes a differential pressure sensor, the two pressure lines of which are respectively connected to the clean air chamber and the filter chamber. The differential pressure sensor is electrically connected to the controller, and the controller is electrically connected to the solenoid valve on the outlet of the compressed air package.

[0015] Preferably, the ash collection chamber is configured as an inverted cone shape, and an ash conveying valve is provided at the ash conveying port at the bottom of the ash collection chamber.

[0016] The working principle and advantages of this utility model are as follows:

[0017] This invention utilizes the self-rotating design of the exhaust duct, with a ring of centrifugal cylinders surrounding it. The flue gas can enter each centrifugal cylinder sequentially for initial centrifugal sedimentation, and then undergo secondary purification through the filter element. Before the filter element intercepts dust, the dust in the flue gas is removed to the maximum extent, which reduces the load on the filter element, prolongs the filter element clogging time, eliminates the need to increase the filter element's filtration area and reduce the filtration velocity, thereby reducing equipment and maintenance costs and minimizing space occupation.

[0018] Unlike traditional dust collectors, the higher the wind speed of this dust collector, the higher the efficiency of centrifugal separation of flue gas in the centrifugal drum, and thus the better the dust separation effect of the entire dust collector. Attached Figure Description

[0019] Appendix Figure 1 This is an overall cross-sectional view of the present invention;

[0020] Appendix Figure 2 This is a top view of the centrifuge cylinder of this utility model;

[0021] Appendix Figure 3 This is a top view of the sealing circumferential surface of this utility model;

[0022] Appendix Figure 4 This is a system block diagram of the present invention.

[0023] In the attached diagrams above:

[0024] 1. Body;

[0025] 2 clean air chambers;

[0026] 3 filtration chambers;

[0027] 4 ash collection chambers;

[0028] 5 rows of ventilation and smoke ducts;

[0029] 51. Smoke outlet;

[0030] 6. Intake pipes;

[0031] 7. Air intake ducts;

[0032] 8 bearings;

[0033] 9 centrifuge tubes;

[0034] 91 air intake opening;

[0035] 10. Sealing circumference;

[0036] 11. Sealing plate;

[0037] 12 filter elements;

[0038] 13 mounting holes;

[0039] 14. Exhaust pipe;

[0040] 15 jet pipes;

[0041] 16 compressed air units;

[0042] 17. Purge branch pipe;

[0043] 18 differential pressure sensors;

[0044] 19 controllers;

[0045] 20. Solenoid valve. DETAILED DESCRIPTION

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0047] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0048] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0049] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0050] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0051] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0052] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0053] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0054] See appendix Figure 1-4 As shown, a spin centrifugal dust collector includes a body 1, inside which a clean air chamber 2, a filter chamber 3 and a dust collection chamber 4 are arranged sequentially from top to bottom.

[0055] The filter chamber 3 is rotatably connected to an exhaust duct 5. The inlet of the exhaust duct 5 is connected to an air inlet pipe 6. The outlet 51 of the exhaust duct 5 is located on the circumference of the exhaust duct 5. The outlet 51 is arranged along the tangent of the circumference of the exhaust duct 5 and is inclined downward.

[0056] In this embodiment, an air inlet duct 7 is provided at the lower smoke inlet of the exhaust duct 5. The air inlet duct 7 is fixed relative to the filter chamber 3. The exhaust duct 5 is rotatably connected to and communicates with the air inlet duct 7 through a bearing 8. The bottom end of the air inlet duct 7 is connected to an air inlet pipe 6, which extends through the body 1 to the outside.

[0057] A plurality of centrifugal cylinders 9 are arranged around the outer side of the exhaust duct 5. The centrifugal cylinders 9 are fixed relative to the filter chamber 3. The centrifugal cylinders 9 are open at both ends, and their upper openings are in contact with the top surface of the filter chamber 3. The centrifugal cylinders 9 are sealed to the circumference of the exhaust duct 5. The upper part of the centrifugal cylinder 9 is cylindrical, and an air inlet 91 is provided on the upper circumference of the centrifugal cylinder 9 facing the exhaust duct 5. The lower inner wall of the centrifugal cylinder 9 is set as an inverted cone shape.

[0058] The sides of the air inlet openings 91 of each centrifuge cylinder 9 are connected end to end to form a sealed circumferential surface 10. The top of the air inlet flue 7 is connected to the lower part of each centrifuge cylinder 9 by a sealing plate 11. The sealing plate 11 is connected to the lower edge of the sealed circumferential surface 10, thereby forming a circumferential seal between the centrifuge cylinders 9 and the exhaust flue 5, so that the flue gas cannot leak out from the gaps between the centrifuge cylinders 9. That is, the flue gas discharged from the exhaust port 51 can only enter each centrifuge cylinder 9 and then be discharged from the opening at the lower end of the centrifuge cylinder 9.

[0059] A plurality of filter elements 12 are connected through the sealing surface between the clean air chamber 2 and the filter chamber 3, corresponding to each centrifuge cylinder 9. The clean air chamber 2 and the filter chamber 3 are connected by the plurality of filter elements 12, and the clean air chamber 2 is connected to an exhaust pipe 14. In this embodiment, the filter element 12 is composed of a filter bag and a cage inside the filter bag. A plurality of mounting holes 13 are opened on the sealing surface between the clean air chamber 2 and the filter chamber 3, corresponding to each filter element 12. The annular stepped surface at the top of the filter element 12 is engaged with the upper edge of the mounting hole 13, and the bottom end extends into the centrifuge cylinder 9.

[0060] The ash collection chamber 4 is configured as an inverted cone shape, and an ash conveying valve is provided at the ash conveying port at the bottom of the ash collection chamber 4.

[0061] When dusting (see) Figure 1 The flue gas, carrying a certain velocity, enters the inlet flue 7 inside the dust collector through the inlet pipe, and then enters the exhaust flue 5 through the center hole of the bearing 8. It then exits from the exhaust outlet 51 on the circumference of the exhaust flue 5 and enters one of the centrifuges 9 through the air inlet 91. Since the exhaust outlet 51 is arranged along the tangential direction of the circumference of the exhaust flue 5, the gas will generate a reverse thrust when it exits from the exhaust outlet 51, which will drive the exhaust flue 5 to rotate. The rotating exhaust flue 5 will cause its exhaust outlet 51 to correspond to each centrifuge 9 in sequence, that is, the flue gas can enter each centrifuge 9.

[0062] Because the flue gas outlet 51 is angled downwards, when the flue gas enters each centrifuge cylinder 9 tangentially, the incoming flue gas will move downwards along the inner wall of the centrifuge cylinder 9. The dust contained in it will move downwards under the action of inertia, generating centrifugal force during the movement, and thus enter the ash collection chamber 4 without separation. When the flue gas outlet 51 rotates to align with the next centrifuge cylinder 9, the turbulence in the previous centrifuge cylinder 9 weakens. At this time, the dust in the previous centrifuge cylinder 9 that has not been separated by centrifugal force will enter a state of gravity settling and finally enter the ash hopper. A very small amount of unseparated dust will be carried by the airflow to reach and adhere to the surface of the filter element 12.

[0063] The purified flue gas is filtered through filter element 12 and then enters the clean air chamber 2 through the inlet of filter element 12, and is discharged from the exhaust pipe 14.

[0064] During the dust removal operation, the ash conveying valve at the bottom ash conveying port of the ash collection chamber 4 is closed. When it is necessary to clean the dust, the ash conveying valve can be opened to discharge the dust in the ash collection chamber 4.

[0065] To ensure efficient filtration of the filter element 12, the spin centrifugal dust collector also includes a jet cleaning system. The jet cleaning system includes a jet pipe 15, one end of which is connected to an external compressed air package 16, and the other end extends into the clean air chamber 2 and is connected to multiple jet cleaning branch pipes 17. Each of the multiple jet cleaning branch pipes 17 corresponds to a number of filter elements 12.

[0066] The jetting system also includes a differential pressure sensor 18, whose two pressure lines are respectively connected to the clean air chamber 2 and the filter chamber 3. The differential pressure sensor 18 is electrically connected to the controller 19, which is electrically connected to the submerged solenoid valve 20 on the outlet of the compressed air package 16. The controller 19 can be a PLC controller.

[0067] During the operation of the dust collector, the differential pressure sensor 18 monitors the air pressure in the clean air chamber 2 and the filter chamber 3 in real time. Generally, after the dust collector has been running for a period of time or when too much dust accumulates on the surface of the filter element 12, there will be a certain pressure difference between the air pressure in the clean air chamber 2 and the filter chamber 3. When the pressure difference reaches the preset pressure difference threshold, the controller 19 controls the compressed air tank 16 to start. Compressed air enters the blowpipe 15 and blows through the blowpipe branch pipe 17 to blow each filter element 12, removing the dust and causing it to fall into the dust collection chamber 4.

[0068] The control principle, control method, and communication of controller 19 are existing technologies and are mature technologies that can be mastered by those skilled in the art. The control and communication between controller 19 and differential pressure sensor 18 and solenoid valve 20 are also widely used in existing technologies. Since they are not the inventive point of this case, they will not be described in detail here.

[0069] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A spin-type centrifugal dust collector, characterized in that: The machine includes a main body, which contains, from top to bottom, a clean air chamber, a filter chamber, and a dust collection chamber. The filter chamber is rotatably connected to a flue, the flue's inlet is connected to an air inlet pipe, and the flue's outlet is located on the circumference of the flue, which is arranged along the tangent of the flue's circumference and tilted downwards. A plurality of centrifuge cylinders are arranged around the outer side of the exhaust flue. The centrifuge cylinders are fixed relative to the filter chamber. The centrifuge cylinders are open at both the top and bottom ends, and the upper opening is in contact with the top surface of the filter chamber. The centrifuge cylinders are sealed to the periphery of the exhaust flue. An air inlet is provided on the upper periphery of the centrifuge cylinder facing the exhaust flue. The lower inner wall of the centrifuge cylinder is set as an inverted cone shape. Several filter elements are connected through the sealing surface between the clean air chamber and the filter chamber, corresponding to each centrifuge cylinder. The clean air chamber and the filter chamber are connected through several filter elements, and the clean air chamber is connected to an exhaust pipe.

2. The self-rotating centrifugal dust collector according to claim 1, characterized in that: An air inlet duct is provided at the lower smoke inlet of the exhaust duct. The air inlet duct is fixed relative to the filter chamber. The exhaust duct is rotatably connected to and communicates with the air inlet duct through a bearing. The bottom end of the air inlet duct is connected to an air inlet pipe, which extends through the body to the outside.

3. A spin centrifugal dust collector according to claim 2, characterized in that: The sides of the air inlet openings of each centrifuge cylinder are connected end to end to form a sealed circumferential surface. The top of the air inlet flue is connected to the bottom of each centrifuge cylinder by a sealing plate. The sealing plate is connected to the lower edge of the sealed circumferential surface, thereby forming a circumferential seal between the centrifuge cylinders and the exhaust flue.

4. A spin centrifugal dust collector according to claim 1, characterized in that: Several mounting holes are provided on the sealing surface between the air purification chamber and the filter chamber, corresponding to each filter element. The top end of the filter element is engaged with the upper edge of the mounting hole, and the bottom end extends into the centrifuge cylinder.

5. A spin centrifugal dust collector according to claim 4, characterized in that: It also includes a jetting system, which includes a jetting pipe. One end of the jetting pipe is connected to an external compressed air tank, and the other end extends into the clean air chamber and is connected to multiple jetting branch pipes. Each of the multiple jetting branch pipes corresponds to a number of filter elements.

6. A spin centrifugal dust collector according to claim 5, characterized in that: The jetting system also includes a differential pressure sensor, whose two pressure lines are respectively connected to the clean air chamber and the filter chamber. The differential pressure sensor is electrically connected to the controller, and the controller is electrically connected to the solenoid valve on the outlet of the compressed air package.

7. A spin centrifugal dust collector according to claim 1, characterized in that: The ash collection chamber is configured as an inverted cone shape, and an ash conveying valve is provided at the ash conveying port at the bottom of the ash collection chamber.

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