Vibrating device and electrostatic precipitator

Abstract

This utility model relates to the field of dust removal technology, and discloses a rapping device and an electrostatic precipitator. The rapping device includes: a support frame with a first mounting hole at one end and a connector at the other end that can be connected to a rotating shaft; an elastic cylindrical pin, which is interference-fitted into the first mounting hole; a rapping hammer with a hammer body at one end and a second mounting hole at the other end opposite to the first mounting hole; and an elastic cylindrical sleeve, which is a hollow cylindrical body with a groove forming through its sidewall, interference-fitted into the second mounting hole, and fitted onto the elastic cylindrical pin, forming an interference connection with the elastic cylindrical pin. When this rapping device is applied to an electrostatic precipitator, it can absorb some of the impact kinetic energy when rapping the electrode plates of the electrostatic precipitator, preventing the electrode plates from vibrating significantly. While ensuring that the dust on the electrode plates can fall off, it will not cause the dust to bounce back into the air and cause secondary pollution, ultimately removing fine dust.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology, specifically to a rapping device and an electrostatic precipitator. Background Technology

[0002] The metallurgical industry (steelmaking, ironmaking) generates a large amount of flue gas during the production of metal products, especially in the steelmaking process. A 200-ton converter can generate up to 200,000 Nm³ of flue gas instantaneously. 3 To achieve absolute capture of particulate matter and ultra-low emissions (10 mg / Nm³) under such a large flue gas generation condition, at a rate of / h... 3 It is truly remarkable. Electrostatic precipitators are widely used due to their advantages of handling large volumes of flue gas, low operating costs, and high dust removal efficiency. They are not only used in the metallurgical industry, but also in other industries such as thermal power generation, cement manufacturing, and the glass industry.

[0003] The working principle of an electrostatic precipitator is as follows: Alternating current is converted into high-voltage direct current through a special device. A strong electric field is formed between the discharge plate (also known as a corona wire) and the anode plate (grounded), filling the space with free charges. Dust particles entering the electric field become charged and are thus attracted to the anode plate under the influence of the electric field force, achieving the purpose of centralized dust removal. After the dust accumulates on the anode plate, it is separated by a periodically moving rapping device. The main body of the rapping device is called a rapping hammer, which is specifically used to strike the electrode plate. The electrode plate vibrates suddenly, and the dust remains stationary due to inertia, thus falling into the ash hopper at the bottom under the action of gravity and being discharged.

[0004] For large dust particles, ordinary rapping devices and rapping hammers can meet the dust removal requirements. However, for ultrafine dust (<1μm), due to its smaller gravity, ordinary rapping devices cause large vibrations to the plates, and the rebound can easily bounce the ultrafine dust that has not completely fallen back into the air, causing it to suspend in space and resulting in secondary pollution.

[0005] Furthermore, the impact between the traditional rapping device and the electrode plate is a "hard-on-hard" collision. The rapping hammer is powered by a rotating rapping shaft, which is driven by a motor. The rapping hammer rotates accordingly, and an anvil is placed at the electrode plate to receive the impact from the rapping hammer. After the electrode plate is impacted, the dust on it falls into the lower dust hopper for dust collection. In long-term operating environments, the rapping effect deteriorates due to wear and tear from impacts between components and relative displacement. This necessitates frequent replacement or repair of the rapping device, consuming manpower, material resources, and financial resources, and affecting dust removal efficiency and normal production rhythm. Specifically, the force generated by the rapping hammer impact is transmitted to the rotating shaft, and each impact affects the rotating shaft during operation. Utility Model Content

[0006] This utility model was made to solve the above-mentioned technical problems. One of its objectives is to provide a rapping device that can absorb part of the impact kinetic energy when rapping the electrode plates of an electrostatic precipitator, so as not to cause the electrode plates to vibrate significantly. While ensuring that the dust on the electrode plates can fall off, it will not cause the dust to bounce back into the air and cause secondary pollution.

[0007] Another objective of this invention is to provide an electrostatic precipitator capable of removing fine dust particles.

[0008] According to one embodiment of the present invention, a vibratory device is provided, comprising: a support frame, one end having a first mounting hole and the other end having a connector that can be connected to a rotating shaft; an elastic cylindrical pin, which is interference-fitted into the first mounting hole; a vibratory hammer, one end having a hammer body and the other end having a second mounting hole opposite to the first mounting hole; and an elastic cylindrical sleeve, which is a hollow cylindrical body with a groove forming through the side wall, interference-fitted into the second mounting hole, and fitted onto the elastic cylindrical pin, and interference-fitted with the elastic cylindrical pin.

[0009] In one embodiment, one end of the support frame has two opposing support plates, and the two support plates have opposing first mounting holes. The other end of the vibrating hammer is disposed between the two support plates.

[0010] In one embodiment, the vibrating device further includes: an elastic pad, fitted onto the elastic cylindrical pin, located between the elastic cylindrical sleeve and the support plate.

[0011] In one embodiment, the connector is a U-shaped fixing bracket with threads at both ends and a third mounting hole at the other end of the support bracket, and the fixing bracket is bolted into the third mounting hole.

[0012] In one embodiment, the end of the fixing frame away from the support frame is an arc-shaped structure with the same curvature as the rotation axis.

[0013] In one embodiment, the support frame has an arcuate groove formed opposite to the fixed frame, and the curvature of the arcuate groove is the same as the curvature of the rotation axis.

[0014] As one embodiment, a fastening screw is threaded into the arc groove, with the front end of the fastening screw facing the fixing frame.

[0015] In one embodiment, the groove is arranged along the axial direction of the elastic cylindrical sleeve.

[0016] In one embodiment, the vibratory hammer is curved in shape.

[0017] According to one embodiment of the present invention, an electrostatic precipitator is provided, comprising a discharge plate and an anode plate, wherein an electric field is formed between the two to allow dust to pass through; a rotating shaft is disposed on one side of the anode plate; a dust collection bin is disposed on the lower side of the anode plate; and a rapping device as described above, wherein the support frame is fixedly connected to the rotating shaft, and when the rotating shaft rotates, the rapping hammer can strike the anode plate.

[0018] Based on the above description and practical application, the rapping device of this invention incorporates an elastic cylindrical pin and an elastic cylindrical sleeve between the support frame and the rapping hammer. The elastic cylindrical sleeve is interference-fitted onto the outer circumference of the elastic cylindrical pin, achieving a tight connection between the support frame and the rapping hammer. During use, the rotating shaft drives the support frame to rotate, which, with the aid of the elastic cylindrical pin and sleeve, causes the rapping hammer to rotate synchronously, enabling it to strike the electrode plates of the electrostatic precipitator and dislodge the dust from the plates.

[0019] Simultaneously, due to the gaps in the elastic cylindrical pin and the interference fit between them, the support frame and the vibratory hammer possess a certain degree of connection rigidity, ensuring that the support frame and the vibratory hammer rotate synchronously when no external force is applied. When the vibratory hammer collides with the electrode plate, the rebound force causes relative rotation between the support frame, the elastic cylindrical pin, the elastic cylindrical sleeve, and the vibratory hammer, thus absorbing some of the impact energy. This prevents the electrode plate from vibrating excessively, and dust detached from the electrode plate is not pushed back into the air by the plate's rebound, ensuring that even finer dust particles fall naturally.

[0020] When this rapping device is applied to an electrostatic precipitator, it can significantly improve the dust removal effect of the electrostatic precipitator, especially in removing finer dust particles. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the vibrating device involved in one embodiment of the present invention.

[0022] Figure 2 This is a side view of the vibrating device in one embodiment of the present invention.

[0023] Figure 3 This is a partial structural schematic diagram of the vibrating device involved in one embodiment of the present utility model.

[0024] The attached figures are labeled as follows: 1. Fixing frame; 2. Support frame; 3. Fastening screw; 4. Nut; 5. Flexible cylindrical pin; 6. Flexible washer; 7. Flexible cylindrical sleeve; 8. Vibratory hammer; 9. Circular groove. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0026] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] According to one embodiment of the present invention, a vibrating device is provided, which is described below in conjunction with... Figures 1 to 3 The vibration device will be described.

[0029] The rapping device in this embodiment mainly includes a support frame 2, a rapping hammer 8, an elastic cylindrical pin 5, and an elastic cylindrical sleeve 7. One end of the support frame 2 has a first mounting hole, and the other end has a connector that can be connected to a rotating shaft. The first mounting hole is used to install the elastic cylindrical pin 5. In this embodiment, the elastic cylindrical pin 5 is a hollow cylindrical body with an axial groove, and is interference-fitted into the first mounting hole. The elastic cylindrical pin 5, also known as a spring pin, has chamfered ends and is used for positioning, connecting, and fixing parts; it needs to have good elasticity and shear resistance, and its outer diameter is slightly larger than the diameter of the first mounting hole. During installation, it is first compressed, then placed into the first mounting hole. After releasing the elastic cylindrical pin 5, it will tightly abut against the first mounting hole, achieving an interference fit.

[0030] One end of the vibratory hammer 8 has a hammer body, which is used to strike the electrode plates of the electrostatic precipitator. The other end of the vibratory hammer 8 has a second mounting hole opposite to the first mounting hole, for mounting the elastic cylindrical sleeve 7. In this embodiment, the structure of the elastic cylindrical sleeve 7 is similar to that of the elastic cylindrical pin 5, also being a hollow cylindrical body with a groove forming through the side wall, and is interference-fitted into the second mounting hole. In this embodiment, the elastic cylindrical sleeve 7 is also fitted onto the elastic cylindrical pin 5, and is interference-fitted with the elastic cylindrical pin 5. Therefore, the support frame 2 and the vibratory hammer 8 have a certain connection rigidity, which can ensure that the support frame 2 and the vibratory hammer 8 rotate synchronously when the vibratory hammer 8 is not subjected to external force.

[0031] In this embodiment, the rapping device incorporates an elastic cylindrical pin 5 and an elastic cylindrical sleeve 7 between the support frame 2 and the rapping hammer 8. The elastic cylindrical sleeve 7 is interference-fitted onto the outer circumference of the elastic cylindrical pin 5, achieving a tight connection between the support frame 2 and the rapping hammer 8. During use, the rotating shaft drives the support frame 2 to rotate, which, with the help of the elastic cylindrical pin 5 and the elastic cylindrical sleeve 7, drives the rapping hammer 8 to rotate synchronously, enabling it to strike the electrode plates of the electrostatic precipitator and dislodge the dust from the plates.

[0032] Meanwhile, because the elastic cylindrical pin 5 and the elastic cylindrical sleeve 7 have gaps and are also interference-fitted, the support frame 2 and the vibratory hammer 8 have a certain connection rigidity, ensuring that the support frame 2 and the vibratory hammer 8 rotate synchronously when the vibratory hammer 8 is not subjected to external force. When the vibratory hammer 8 collides with the electrode plate, the rebound force can cause relative rotation between the support frame 2, the elastic cylindrical pin 5, the elastic cylindrical sleeve 7, and the vibratory hammer 8, thus absorbing some of the impact energy. This prevents the electrode plate from vibrating too much, and dust that detaches from the electrode plate will not be pushed into the air again when the electrode plate rebounds, thus ensuring that even fine dust particles can fall naturally.

[0033] Furthermore, in this embodiment, one end of the support frame 2 has two opposing support plates, and opposing first mounting holes are formed on the two support plates. The other end of the vibrating hammer 8 is disposed between the two support plates. Figure 3 As shown, two downward-extending support plates are formed on the lower two wings of the support frame 2. The upper end of the vibratory hammer 8 is interference-fitted between the two support plates by an elastic cylindrical pin 5 and an elastic cylindrical sleeve 7. By setting these two support plates, the connection stability between the vibratory hammer 8 and the support frame 2 can be significantly improved. After long-term use and repeated striking of the electrode plate, the vibratory hammer 8 can always maintain an effective connection with the support frame 2.

[0034] Furthermore, in this embodiment, an elastic gasket 6 is also provided between the elastic cylindrical sleeve 7 and the support plate. For example... Figure 3 As shown, the elastic washer 6 is fitted onto the elastic cylindrical pin 5, with its left and right sides respectively abutting against the elastic cylindrical sleeve 7 and the support plate. The elastic washer 6, by virtue of its shape, allows the two end faces of the elastic cylindrical sleeve 7 to be securely connected to the support plate. When the vibrating hammer 8 collides with the electrode plate, and the vibrating hammer 8 rotates relative to the support frame 2, the friction between the elastic washer 6, the elastic cylindrical sleeve 7, and the support plate can also absorb some of the impact energy.

[0035] In this embodiment, the elastic gasket 6, the elastic cylindrical sleeve 7, and the elastic cylindrical pin 5 are equivalent to a relatively flexible connection structure, which realizes the flexible connection between the support frame 2 and the vibrating hammer 8. This ensures that the support frame 2 can drive the vibrating hammer 8 to rotate, and also absorbs some of the collision energy when the vibrating hammer 8 collides with the electrode plate, so that the electrode plate only produces a relatively small amplitude vibration.

[0036] In this embodiment, the connector is a U-shaped fixing bracket 1. For example... Figure 3 As shown, the fixed frame 1 has threads at both ends, and the support frame 2 has a third mounting hole. The fixed frame 1 is bolted into the third mounting hole by a nut 4. When the vibrating device is installed on the rotating shaft, the tightness of the connection can be adjusted by the cooperation of the U-shaped fixed frame 1 and the nut 4, so that the fixed frame 1 and the support frame 2 can be firmly connected to the rotating shaft.

[0037] Furthermore, in this embodiment, the end of the fixing frame 1 furthest from the support frame 2, i.e. Figure 3 The upper end of the device is an arc-shaped structure with the same curvature as the rotation axis. When connected to the rotation axis, the contact area between the fixing frame 1 and the rotation axis can be significantly increased, further improving the stability of the connection between the vibrating device and the rotation axis. Similarly, in this embodiment, as... Figure 3 As shown, an arcuate groove 9 is formed on the support frame 2, opposite to the fixed frame 1. The curvature of the arcuate groove 9 is the same as the curvature of the rotating shaft. When connected to the rotating shaft, the contact area between the support frame 2 and the rotating shaft can be significantly increased, further improving the stability of the connection between the rapping device and the rotating shaft.

[0038] Furthermore, in this embodiment, as Figure 3As shown, a fastening screw 3 is threaded into the arc groove 9, with the front end of the fastening screw 3 facing the fixing frame 1. When the rapping device is connected to the rotating shaft, by tightening the fastening screw 3, its front end can press tightly against the rotating shaft, which can further improve the stability of the connection between the rapping device and the rotating shaft.

[0039] In this embodiment, the groove on the elastic cylindrical sleeve 7 is arranged along the axial direction of the elastic cylindrical sleeve 7, which facilitates the assembly of the vibratory hammer 8, the elastic cylindrical sleeve 7, and the elastic cylindrical pin 5 together. In other embodiments, the groove can also be set in a spiral shape, which can achieve the same effect.

[0040] Furthermore, in this embodiment, the vibrating hammer 8 is generally curved. For example... Figure 2 As shown, the lower end of the vibrating hammer 8 is an arc-shaped hammer body, providing a large contact surface when it impacts the electrode plate. In practical applications, this vibrating device rotates clockwise around the rotation axis between the support frame 2 and the fixed frame 1. After the left end of the hammer body collides with the electrode plate, the support frame 2 and the fixed frame 1 continue to rotate, causing the vibrating hammer 8 to rotate counterclockwise around the axis of the elastic cylindrical pin 5. The rotation center of the vibrating hammer 8 gradually moves away from the electrode plate until the vibrating hammer 8 detaches from the electrode plate. During this process, compared to traditional vibrating devices, the electrode plate experiences a smaller amplitude vibration after impact and does not rebound significantly, thus preventing the dust that has detached from the electrode plate from being pushed back into the air.

[0041] In this embodiment, an electrostatic precipitator is also disclosed, including a discharge plate, an anode plate, a rotating shaft, a dust collection bin, and the aforementioned rapping device. An electric field is formed between the discharge plate and the anode plate to allow dust to pass through, and the dust can be adsorbed onto the anode plate. The rotating shaft is located on one side of the anode plate and is used to drive the rapping device to rotate. The dust collection bin is located on the underside of the anode plate and can collect falling dust. The support frame 2 of the rapping device is fixedly connected to the rotating shaft. When the rotating shaft rotates, the rapping hammer 8 can strike the anode plate, causing the anode plate to vibrate with a small amplitude, allowing the dust on the anode plate to leave the anode plate and fall naturally into the dust collection bin.

[0042] When the electrostatic precipitator is in use, after the rapping hammer 8 impacts the anode plate, the rapping hammer 8 rotates axially around the elastic cylindrical pin 5, which reduces the wear on the rotating shaft caused by the impact and improves the service life of the rotating shaft. In addition, the relative rotation between the rapping hammer 8, the elastic cylindrical sleeve 7, the elastic cylindrical pin 5, the elastic washer 6, and the support frame 2 can also absorb some of the impact energy. Compared with the traditional purely rigid connection rapping device, the service life of the rapping device in this embodiment can be significantly improved.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rapping device, characterized in that include: The support frame has a first mounting hole at one end and a connector at the other end that can be connected to the rotating shaft; A flexible cylindrical pin is interference-fitted into the first mounting hole; A vibratory hammer has a hammer body at one end and a second mounting hole at the other end that is opposite to the first mounting hole. The elastic cylindrical sleeve is a hollow cylindrical body with a groove forming through the side wall. It is interference-fitted into the second mounting hole and fitted onto the elastic cylindrical pin, forming an interference connection with the elastic cylindrical pin.

2. The vibrating device as described in claim 1, characterized in that, One end of the support frame has two opposing support plates, and the two support plates have opposing first mounting holes. The other end of the vibratory hammer is disposed between the two support plates.

3. The rapping device of claim 2, wherein Also includes: An elastic washer is fitted onto the elastic cylindrical pin and is located between the elastic cylindrical sleeve and the support plate.

4. The vibrating device as described in claim 1, characterized in that, The connector is a U-shaped fixing bracket with threads at both ends. The other end of the support bracket has a third mounting hole, and the fixing bracket is bolted into the third mounting hole.

5. The vibrating device as described in claim 4, characterized in that, The end of the fixed frame away from the support frame is an arc-shaped structure with the same curvature as the rotation axis.

6. The vibrating device as described in claim 5, characterized in that, The support frame has an arc groove that is opposite to the fixed frame, and the curvature of the arc groove is the same as the curvature of the rotation axis.

7. The vibrating device as described in claim 6, characterized in that, A fastening screw is threaded into the arc groove, with the front end of the fastening screw facing the fixing frame.

8. The vibrating device as described in claim 1, characterized in that, The groove is arranged along the axial direction of the elastic cylindrical sleeve.

9. The vibrating device as described in claim 1, characterized in that, The vibratory hammer is curved in shape.

10. An electrostatic precipitator characterized by comprising: include: The discharge plate and the anode plate form an electric field between them, allowing dust to pass through; A rotating shaft is located on one side of the anode plate; The ash collection bin is located on the lower side of the anode plate; According to any one of claims 1 to 9, the support frame is fixedly connected to the rotating shaft, and when the rotating shaft rotates, the vibrating hammer can strike the anode plate.

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