Device for improving separation efficiency of cyclone dust collector

Abstract

The utility model discloses a device for improving the separation efficiency of a cyclone dust collector, which belongs to the technical field of cyclone dust collection, is integrally arranged at the bottom of a lower cone, is connected above a dust inlet of a dust discharging valve, and comprises a main body and a plurality of blades which are arranged on the outer wall of the main body and are used for reducing the rotational flow wind speed at the bottom of the lower cone. The device is arranged at the bottom of the cyclone dust collector, the blades on the outer wall of the device body play a role in disturbing high-speed wind along the bottom of the lower cone, the wind speed of the bottom of the lower cone of the cyclone dust collector can be reduced, dust deposited at the bottom of a lower limb is prevented from being raised along with the high-speed wind again, and the dust separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of cyclone dust removal, in particular to a device for improving the separation efficiency of a cyclone dust collector. Background Art

[0002] The cyclone dust collector is a device that uses centrifugal force to separate dust particles from dust-laden airflow. The structure of the cyclone dust collector is generally composed of an air inlet pipe, an exhaust pipe, a cylinder, a lower cone, and an ash discharge valve. Its working principle is as follows: after the cyclone dust collector allows the dust-laden gas to enter the cylinder along the tangential direction from the air inlet pipe, the dust particles are separated from the gas due to the centrifugal force and enter the ash discharge valve along the lower cone, while the purified gas is discharged along the exhaust pipe, thereby achieving the purpose of purifying the dust-laden gas. However, as the inner diameter of the lower cone of the cyclone dust collector gradually decreases from top to bottom, the wind speed gradually increases, and the centrifugal force at the bottom of the lower cone almost reaches the maximum, causing part of the deposited dust to float up again under the drive of centrifugal force, and be discharged along the exhaust pipe together with the purified gas, resulting in a reduction in the separation effect of the cyclone dust collector. In addition, since the ash discharge valve is directly connected to the outlet of the lower cone, it is very easy to be worn under the scouring of the high-speed dust-laden gas at the lower cone, thereby affecting the service life of the ash discharge valve.

[0003] In the prior art, patent CN208465407U discloses a cyclone dust collector with a high dust removal rate, including an air inlet pipe, a cylinder and an air outlet pipe connected in sequence, and the lower part of the cylinder is connected in sequence to a lower cone and an ash hopper, characterized in that: a conical bag-type dust collector is provided in the cylinder, and the bag-type dust collector is connected to the air outlet pipe through a connecting pipe; a pulse air back-blowing dust device is provided inside the bag-type dust collector.

[0004] The above patent improves the dust removal effect by setting a bag dust collector in the cylinder of the cyclone dust collector. Although it can play a certain role, it also increases the dust removal cost. In addition, the bag dust collector set in the cylinder will destroy the airflow inside the cyclone dust collector to a certain extent, affecting the original dust removal efficiency. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the wind speed at the bottom of the lower cone of the cyclone dust collector is too fast, which causes the deposited dust to be lifted up again and mixed into the purified gas for output, thereby affecting the dust removal effect. A device for improving the separation efficiency of the cyclone dust collector is proposed. The device reduces the wind speed at the bottom of the lower cone of the cyclone dust collector to prevent the deposited dust from being lifted up again, thereby improving the dust separation efficiency.

[0006] In order to achieve the above utility model purpose, the technical solution of the utility model is as follows:

[0007] A device for improving the separation efficiency of a cyclone dust collector is arranged as a whole at the bottom of a lower cone and connected above an ash inlet of an ash discharge valve. The device comprises a main body and a plurality of blades arranged on the outer wall of the main body for reducing the cyclone wind speed at the bottom of the lower cone.

[0008] Furthermore, the main body is a columnar structure whose central axis is parallel to the central axis of the lower cone, and the blades are evenly distributed along the circumferential outer wall of the main body.

[0009] Furthermore, a connecting shaft extends from the bottom of the main body, and a connecting flange is provided at the end of the connecting shaft. The connecting flange is detachably fixedly connected to the flange plate at the ash inlet end of the ash discharge valve, and a through hole connected to the ash inlet of the ash discharge valve is provided in the middle of the connecting flange.

[0010] Furthermore, the connecting shaft is connected to the center position of the connecting flange, and a plurality of angle connecting pieces are arranged at the connection between the connecting shaft and the connecting flange.

[0011] Furthermore, a wear-resistant layer is provided on the surface of the blade.

[0012] Furthermore, the upper part where the blade is connected to the main body is provided with a chamfer, and the radial width of the blade in the chamfered area gradually decreases from bottom to top.

[0013] Furthermore, the blades and the main body are an integrally formed structure.

[0014] Furthermore, a wear-resistant layer is provided on the surface of the corner connector.

[0015] Furthermore, the wear-resistant layer is a ceramic sheet.

[0016] The working principle of this utility model:

[0017] This device is arranged at the bottom of the lower cone of the cyclone dust collector. Its principle is to reduce the wind speed at the lower cone by the blades arranged on the outer wall of the device body, thereby preventing the separated dust from being mixed with the purified air again with the high-speed wind, so as to improve the dust separation efficiency. At the same time, since this device is arranged at the connection between the lower cone and the ash discharge valve, it plays a shielding role, reducing the direct scouring of the ash discharge valve by the high-speed dust-containing gas at the bottom of the lower cone, thereby reducing the probability of wear of the ash discharge valve.

[0018] In summary, the utility model has the following advantages:

[0019] 1. The utility model is arranged at the bottom of the cyclone dust collector. The blades on the outer wall of the device body disturb the high-speed wind along the bottom of the lower cone, which can reduce the wind speed at the bottom of the lower cone of the cyclone dust collector, prevent the dust deposited at the bottom of the lower cone from being lifted up again with the high-speed wind, and improve the dust separation efficiency;

[0020] 2. In the utility model, since the device is arranged at the connection between the lower cone and the ash discharge valve, it plays a shielding role, reducing the direct scouring of the ash discharge valve by the high-speed dust-containing gas at the bottom of the lower cone, thereby reducing the probability of wear of the ash discharge valve;

[0021] 3. In the present invention, in order to delay the wear time of the device and increase the service life of the device, a ceramic wear-resistant layer is provided on the surface of the blade that is mainly eroded;

[0022] 4. In the utility model, the device as a whole is detachably fixedly connected to the flange at the ash inlet of the ash discharge valve through a connecting flange, so as to facilitate the overall replacement of the device;

[0023] 5. In the utility model, the upper part where the blade is connected to the main body can be chamfered to avoid damaging the wind speed in the low-speed area of ​​the lower cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the device of the utility model;

[0025] Figure 2 It is a top view of the device of the utility model;

[0026] Figure 3 for Figure 1 AA view in the figure;

[0027] In the figure:

[0028] 1. Main body, 2. Blades, 3. Connecting flange, 4. Connecting shaft, 5. Angle connector, 6. Through hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "upper", "vertical", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] This embodiment discloses a device for improving the separation efficiency of a cyclone dust collector. The device is arranged as a whole at the bottom of the lower cone of the cyclone dust collector and is connected above the ash inlet of the ash discharge valve. The device includes a main body 1 and a plurality of blades 2 arranged on the outer wall of the main body 1 for reducing the cyclone wind speed at the bottom of the lower cone.

[0036] like Figure 1-2 As shown, the main body 1 is a cylindrical structure whose central axis is parallel to the central axis of the lower cone, and the blades 2 are evenly distributed along the circumferential direction of the outer wall of the main body 1. Preferably, the blades 2 are arranged along the axial direction of the main body 1, and the height of the blades 2 is determined according to the position of the high-speed wind zone of the lower cone. The edge contour shape of the blade 2 can be designed as a half-cut diamond, polygon or arc shape as needed. In this embodiment, the blade 2 has a certain thickness, generally greater than 10 mm. In order to facilitate production and reduce costs, the blades 2 and the main body 1 are cast in one piece.

[0037] The utility model is arranged at the bottom of the cyclone dust collector, and the blades 2 on the outer wall of the device body 1 can disturb the high-speed wind along the bottom of the lower cone, which can reduce the wind speed at the bottom of the lower cone of the cyclone dust collector, prevent the dust deposited at the bottom of the lower limb from being lifted up again with the high-speed wind, and improve the dust separation efficiency.

[0038] Example 2

[0039] As a preferred embodiment of the present utility model, this embodiment provides a device for improving the separation efficiency of a cyclone dust collector. Compared with Embodiment 1, this embodiment mainly has the following differences:

[0040] In order to improve the wear resistance, the present embodiment further provides a wear-resistant layer on the surface of the blade 2. Preferably, the wear-resistant layer is a ceramic sheet, which is attached to the front and back sides of the blade 2 in an inlaid form. The ceramic sheet has high wear resistance and can prolong the service life of the device. The thickness of the ceramic sheet can be designed by oneself, and is generally greater than 5 mm.

[0041] Example 3

[0042] As a preferred embodiment of the present utility model, this embodiment provides a device for improving the separation efficiency of a cyclone dust collector. Based on Embodiment 1, this embodiment further describes the structure of the blades 2 of the device.

[0043] In this embodiment, a chamfer can be provided at the upper part where the blade 2 is connected to the main body 1, and the radial width of the blade 2 in the chamfered area gradually decreases from bottom to top. The chamfered design can prevent the top blade 2 from destroying the wind speed in the low-speed zone, so that the low-speed zone in the middle of the lower cone can perform dust separation normally.

[0044] Example 4

[0045] As a preferred embodiment of the present utility model, this embodiment provides a device for improving the separation efficiency of a cyclone dust collector. Based on Embodiment 1, this embodiment further describes the installation structure of the device.

[0046] The device as a whole is detachably fixed to the ash discharge valve to facilitate replacement of the device as a whole. Figure 3 As shown, a connecting shaft 4 extends from the bottom of the main body 1, and a connecting flange 3 is provided at the end of the connecting shaft 4. The main body 1 is detachably fixedly connected to the flange plate at the ash inlet end of the ash discharge valve through the connecting flange 3. A through hole 6 connected to the ash inlet of the ash discharge valve is provided in the middle of the connecting flange 3, so that the separated dust can enter the ash discharge valve from the through hole 6.

[0047] In this embodiment, the connecting shaft 4 is connected to the center of the connecting flange 3. In order to improve the connection strength, a plurality of corner connectors 5 are provided at the connection between the connecting shaft 4 and the connecting flange 3. Furthermore, in order to improve the service life of the corner connectors 5 and delay their wear time, ceramic sheets are attached to both the front and back sides of the corner connectors 5.

[0048] The working principle of the utility model is as follows:

[0049] The device is installed at the bottom of the lower cone of the cyclone dust collector, so that the connection flange 3 at the bottom of the device is connected and fixed to the flange at the ash inlet of the ash discharge valve. The dust-containing gas enters the cyclone dust collector from the air inlet pipe along the tangential direction. Under the action of centrifugal force, the dust particles are separated from the gas and accumulated at the bottom of the lower cone, and enter the ash discharge valve from the through hole 6 in the center of the connection flange 3. The purified gas is input along the exhaust pipe, thereby achieving the purpose of flue gas purification;

[0050] As the dust-laden gas enters the lower cone, the inner diameter gradually decreases and the wind speed becomes higher and higher. Under the blocking effect of the blades 2 on the outer wall of the device body 1, the wind speed slows down here, which can prevent the high-speed gas from raising the deposited dust again. At the same time, due to the shielding effect of the device, the high-speed dust-laden gas is prevented from directly scouring the ash discharge valve body, which reduces the wear of the ash discharge valve.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for improving the separation efficiency of a cyclone dust collector, characterized in that: The device is arranged as a whole at the bottom of the lower cone and connected above the ash inlet of the ash discharge valve, and comprises a main body (1) and a plurality of blades (2) arranged on the outer wall of the main body (1) for reducing the swirling wind speed at the bottom of the lower cone.

2. A device for improving the separation efficiency of a cyclone dust collector as claimed in claim 1, characterized in that: The main body (1) is a columnar structure whose central axis is parallel to the central axis of the lower cone, and the blades (2) are evenly distributed along the circumferential outer wall of the main body (1).

3. A device for improving the separation efficiency of a cyclone dust collector as claimed in claim 1, characterized in that: A connecting shaft (4) extends from the bottom of the main body (1), and a connecting flange (3) is provided at the end of the connecting shaft (4). The connecting flange (3) is detachably fixedly connected to a flange plate at the ash inlet end of the ash discharge valve, and a through hole (6) communicating with the ash inlet of the ash discharge valve is provided in the middle of the connecting flange (3).

4. A device for improving the separation efficiency of a cyclone dust collector as claimed in claim 3, characterized in that: The connecting shaft (4) is connected to the center position of the connecting flange (3) disk, and a plurality of angle connecting pieces (5) are provided at the connection between the connecting shaft (4) and the connecting flange (3).

5. A device for improving separation efficiency of a cyclone dust collector as claimed in claim 1, characterized in that: The surface of the blade (2) is provided with a wear-resistant layer.

6. A device for improving separation efficiency of a cyclone dust collector as claimed in claim 1, characterized in that: The upper part of the blade (2) connected to the main body (1) is provided with a chamfer, and the radial width of the blade (2) in the chamfered area gradually decreases from bottom to top.

7. A device for improving separation efficiency of a cyclone dust collector as claimed in claim 1, characterized in that: The blades (2) and the main body (1) are an integrally formed structure.

8. A device for improving separation efficiency of a cyclone dust collector as claimed in claim 4, characterized in that: The surface of the corner connector (5) is provided with a wear-resistant layer.

9. A device for improving the separation efficiency of a cyclone dust collector as claimed in claim 5 or 8, characterized in that: The wear-resistant layer is a ceramic sheet.

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