A fan-shaped scraper limit protection structure for electrostatic precipitator

Abstract

The utility model provides a fan-shaped scraper limit protection structure for an electrostatic precipitator, comprising a frame and a reinforcement mechanism, a connecting assembly, a limit protection device and a scraper reducer arranged on the frame, the reinforcement mechanism comprising a fixed portion and a connecting portion, the connecting portion being fixedly connected to the scraper reducer, the limit protection device comprising a limit reducer and a limit mechanism, the limit protection device comprising a limit reducer and a limit mechanism, the limit mechanism comprising a movable portion and a stopper portion, the stopper portion being recessed inwardly to form an arc groove, the movable portion being swingably arranged in the arc groove along the circumference of the arc groove, the limit reducer having an input shaft and an output shaft, the input shaft being connected to the drive shaft of the scraper reducer through the connecting assembly, and the output shaft being transmission-connected to the detection portion. In this way, the entire limit protection device has a fixed portion as a support, so the installation is stable, so the transmission connection portion between the input shaft and the drive shaft will not swing significantly, so as to avoid damage to the transmission connection portion and reduce the maintenance frequency.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic precipitator equipment, in particular to a sector-shaped scraper limiting protection structure for an electrostatic precipitator. Background Art

[0002] The fan-shaped scraper of the converter dry dust removal electrostatic precipitator is located inside the electrostatic precipitator, and the scraper's operating position is detected by a position limit protection device installed on the outside of the precipitator. The position limit protection device is connected to the scraper's rotating shaft through a coupling, and a wheel is installed on its output shaft to cooperate with proximity switches and travel switches to detect the scraper's middle position and left and right limit positions.

[0003] However, the conventional installation method of the position limit protection device in the prior art is usually an independent fixed installation. Since the scraper reducer is suspended and installed inside the electrostatic precipitator, the drive shaft of the scraper is prone to swing during operation, which can easily cause damage to the connection of the drive shaft. Once damaged, the scraper position cannot be determined, and it is very easy to cause accidents and difficult to recover.

[0004] In view of this, it is necessary to propose a fan-shaped scraper limiting protection structure for an electrostatic precipitator to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main purpose of the utility model is to provide a fan-shaped scraper limit protection structure for an electrostatic precipitator, so as to solve the problem that the position limit protection device in the prior art is easily damaged at the connection of the transmission shaft during operation and the scraper position cannot be determined.

[0006] To achieve the above-mentioned purpose, the utility model provides a fan-shaped scraper limit protection structure for an electrostatic precipitator, comprising a frame and a reinforcement mechanism, a connecting assembly, a limit protection device and a scraper reducer arranged on the frame; wherein,

[0007] The reinforcement mechanism includes a fixing part and a connecting part, wherein the fixing part is fixedly arranged on the frame, and the connecting part is fixedly connected to the scraper reducer;

[0008] The position limiting protection device comprises a position limiting reducer and a position limiting mechanism both mounted on the fixed part, the position limiting mechanism comprises a movable part and a stopper, the stopper is recessed inward to form an arc-shaped groove, the movable part is swingably arranged in the arc-shaped groove along the circumference of the arc-shaped groove, the position limiting reducer has an input shaft and an output shaft, wherein,

[0009] The input shaft is connected to the driving shaft of the scraper reducer through the connecting assembly, and the output shaft is transmission-connected to the detection unit.

[0010] Preferably, the fixing portion is a horizontal support plate, the limiting reducer and the limiting mechanism are both fixed on the horizontal support plate, one end of the connecting portion is fixedly connected to the side wall of the horizontal support plate, and the other end of the connecting portion is fixedly connected to the scraper reducer.

[0011] Preferably, the connecting portion comprises an upper connecting plate, a lower connecting plate, two diagonal braces and two longitudinal braces, wherein:

[0012] The two oblique braces are relatively arranged on both sides of the horizontal support plate along the width direction of the horizontal support plate, and the upper ends of the oblique braces are fixedly connected to the scraper reducer through the upper connecting plate;

[0013] The two longitudinal supports are relatively arranged on both sides of the horizontal support plate along the width direction of the horizontal support plate, and the longitudinal supports are fixedly connected to the scraper reducer through the lower connecting plate.

[0014] Preferably, the connecting assembly is a coupling, and the input shaft is connected to the driving shaft of the scraper reducer through the coupling.

[0015] Preferably, the limiting mechanism is a travel switch or a limit switch.

[0016] Preferably, the input shaft is arranged coaxially with the drive shaft of the scraper reducer.

[0017] Preferably, the scraper reducer is cylindrical, and the upper connecting plate and the lower connecting plate are vertically arranged opposite to each other on both sides of the drive shaft of the scraper reducer and are fixedly connected to the scraper reducer.

[0018] Preferably, the connecting portion further comprises a plurality of reinforcing connecting blocks spaced apart along the width direction of the horizontal supporting plate, wherein the reinforcing connecting blocks are connected between one end of the horizontal supporting plate and the lower connecting plate.

[0019] Preferably, the limit reducer is fixedly connected to the horizontal support plate by bolts.

[0020] Preferably, the width of the upper connecting plate and the lower connecting plate are both 15 cm to 20 cm.

[0021] Compared with the prior art, the utility model provides the following beneficial effects:

[0022] The utility model provides a limit protection structure for a fan-shaped scraper of an electrostatic precipitator, comprising a frame and a reinforcement mechanism, a connecting assembly, a limit protection device and a scraper reducer arranged on the frame, the reinforcement mechanism comprising a fixing part and a connecting part, the fixing part is fixedly arranged on the frame, the connecting part is fixedly connected to the scraper reducer, the limit protection device comprises a limit reducer and a limit mechanism both installed on the fixing part, the limit protection device comprises a limit reducer and a limit mechanism both installed on the fixing part, the limit mechanism comprises a movable part and a stopper part, the stopper part is recessed inwardly to form an arc-shaped groove, the movable part is swingably arranged in the arc-shaped groove along the circumference of the arc-shaped groove, the limit reducer has an input shaft and an output shaft, the input shaft is connected to the driving shaft of the scraper reducer through the connecting assembly, and the output shaft is transmission-connected to the detection part. In this way, by installing the entire limit protection device on the reinforcement mechanism, when the scraper reducer shakes during operation, the entire limit protection device has a fixed part as support and is stably installed. Therefore, the transmission connection part between the input shaft and the drive shaft will not swing greatly to avoid damage to the transmission connection part, thereby ensuring accurate detection results and improving detection efficiency. The limit protection device limits the rotation stroke to avoid damage to the scraper due to excessive rotation when the axis is off-axis, thereby reducing maintenance frequency and reducing equipment failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure in one embodiment of the utility model;

[0025] Figure 2 It is a side view schematic diagram of the overall structure in one embodiment of the utility model;

[0026] Figure 3 It is a plan view of the overall structure in one embodiment of the utility model.

[0027] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0028] Description of Figure Numbers:

[0029] 10. Reinforcement mechanism; 110. Fixing part; 111. Horizontal support plate; 120. Connection part; 121. Upper connection plate; 122. Lower connection plate; 123. Diagonal brace; 124. Longitudinal support; 125. Reinforcement connection block; 20. Connection assembly; 210. Coupling; 30. Limit protection device; 310. Limit reducer; 311. Input shaft; 312. Output shaft; 320. Limit mechanism; 321. Movable part; 322. Stopper; 323. Arc groove; 40. Scraper reducer; 410. Drive shaft; 50. Frame. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] Please see attached Figure 1-3In one embodiment, the utility model provides a fan-shaped scraper limit protection structure for an electrostatic precipitator, comprising a frame 50 and a reinforcement mechanism 10, a connecting assembly 20, a limit protection device 30 and a scraper reducer 40 arranged on the frame 50. First of all, it should be noted that, unlike the conventional installation method of the position limit protection device 30 in the prior art, which is usually an independent fixed installation, and because the scraper reducer 40 is suspended and installed inside the electrostatic precipitator, the drive shaft of the scraper is prone to swing during operation, which can easily cause damage to the connection of the drive shaft. Once damaged, the scraper position cannot be determined, and it is very easy to cause accidents and difficult to recover. The present application solves the above-mentioned defects in the prior art by providing a fan-shaped scraper limit protection structure for an electrostatic precipitator. Specifically as follows:

[0035] The reinforcement mechanism 10 includes a fixing portion 110 and a connecting portion 120, wherein the fixing portion 110 is fixedly arranged on the frame 50, and the connecting portion 120 is fixedly connected to the scraper reducer 40; the limit protection device 30 includes a limit reducer 310 and a limit mechanism 320 both mounted on the fixing portion 110, wherein the limit mechanism 320 includes a movable portion 321 and a stop portion 322, wherein the stop portion 322 is recessed inwardly to form an arc-shaped groove 323, wherein the movable portion 321 is swingably arranged in the arc-shaped groove 323 along the circumference of the arc-shaped groove 323, and the limit reducer 310 has an input shaft 311 and an output shaft 312, wherein the input shaft 311 is connected to the drive shaft 410 of the scraper reducer 40 through the connecting assembly 20, and the output shaft 312 is transmission-connected to the detection portion.

[0036] Specifically, the electrostatic precipitator fan-shaped scraper limit protection structure in the present application includes a frame 50 and a reinforcement mechanism 10, a connecting assembly 20, a limit protection device 30 and a scraper reducer 40 arranged on the frame 50. The inner end of the drive shaft 410 of the scraper reducer 40 is connected to the scraper, and the scraper is driven back and forth by gears to scrape the dust; and because the scraper is closed inside and cannot be seen, the limit protection device 30 is used to limit the scraper from excessive rotation at the extreme position, causing damage to the scraper. Therefore, the limit protection device 30 is used to limit the scraper from excessive rotation after the extreme position to protect the scraper; the connecting assembly 20 is used to connect the limit protection device 30 and the scraper reducer 40 to achieve synchronous operation; the reinforcement mechanism 10 is used to reinforce the connection between the limit protection device 30 and the scraper reducer 40, which is different from the hanging setting in the prior art to ensure stable operation during operation.

[0037] Among them, the reinforcement mechanism 10 includes a fixing part 110 and a connecting part 120, the fixing part 110 is used for the installation of the limit protection device 30, and the connecting part 120 is used to connect the fixing part 110 and the scraper reducer 40 as a whole, so that the limit protection device 30 installed on the fixing part 110 and the scraper reducer 40 are integrated, so that they shake synchronously during operation, avoiding asynchronous shaking during rotation and causing damage to the transmission connection part 120; further, the limit protection device 30 includes a limit reducer 310 and a limit mechanism 320 both installed on the fixing part 110, the limit reducer 310 is used to be connected to the drive shaft 410 of the scraper reducer 40 for synchronous operation, and has an input shaft 311 and an output shaft 312, the input shaft 311 is used to be connected to the drive shaft 410, and the output shaft 312 is used After being decelerated again by the limit reducer 310, it is converted into another rotation speed; the limit mechanism 320 is used for limited rotation, which includes a movable part 321 and a stop part 322. The movable part 321 is used for movable swing, and the stop part 322 is used to limit the rotation range of the movable part 321. Therefore, an arc-shaped groove 323 is formed inwardly at the stop part 322 as the rotation range. It should be noted that during operation, the scraper reducer 40 rotates one circle and drives the input shaft 311 to rotate one circle at the same time. At this time, the output shaft 312 rotates 20° accordingly. At this time, the movable part 321 will be driven to rotate to one end of the arc groove 323 and limited to prevent excessive rotation. When it cannot rotate, it can be reversed to rotate to the opposite end of the arc groove 323, and limited again. By flipping back and forth, the scraper can be rotated back and forth to perform the scraping operation.

[0038] Preferably, the limit mechanism 320 is a travel switch or a limit switch to realize the back and forth flipping of automatic signal reception and transmission. It is worth noting that the travel switch and the limit switch are based on the change of contacts when the mechanical device moves to a certain position to realize the switching between mechanical signals and electrical signals. They are relatively mature and commonly used industrial equipment, so their specific working principles are not described in detail here; and as an application in this application, the movable part 321 acts as a switch. When the scraper reducer 40 rotates one circle, the scraper rotates one circle to the extreme position. At this time, the transmission drives the input shaft 311 to rotate one circle and is converted into a 20° rotation of the output shaft 312 through the limit reducer 310, and the switch is Rotate to one end of the arc groove 323, and contacts are usually set at the two end positions of the arc groove 323 in the travel switch or limit switch. After the switch swings to one end and touches the contact, it converts and sends out an electrical signal to indicate to stop rotating and limit; at the same time, it sends out an electrical signal to indicate reverse rotation, and then rotates in the opposite direction by 20° to swing to the other end for limiting, and after touching the contact at the other end, it indicates to continue flipping, and so on. The back and forth operation can realize the scraper's forward circle and reverse circle back and forth scraping operation; and the fixing part 110 is used as support in the whole process, and the whole structure is connected as a whole through the connecting part 120, so that it shakes synchronously, and the structural connection is stable, which reduces the occurrence of eccentric axis damage.

[0039] As a preferred embodiment of the utility model, the fixing part 110 is a horizontal support plate 111, the limit reducer 310 and the limit mechanism 320 are both fixed on the horizontal support plate 111, one end of the connecting part 120 is fixedly connected to the side wall of the horizontal support plate 111, and the other end of the connecting part 120 is fixedly connected to the scraper reducer 40.

[0040] It should be noted that the horizontal support plate 111 has a sufficiently large installation space to facilitate the installation of the limit reducer 310 and the limit mechanism 320, and can ensure smooth installation, so as to serve as a better installation platform, thereby replacing the suspended installation method in the prior art, so that it has support during operation, and then the horizontal support plate 111 and the scraper reducer 40 are connected as a whole through the connecting part 120 to form an integral structure, and the amplitude of the swing is shared during operation.

[0041] As a preferred embodiment of the utility model, the connecting portion 120 includes an upper connecting plate 121, a lower connecting plate 122, two diagonal braces 123 and two longitudinal supports 124, wherein the two diagonal braces 123 are relatively arranged on both sides of the horizontal support plate 111 along the width direction of the horizontal support plate 111, and the upper ends of the diagonal braces 123 are fixedly connected to the scraper reducer 40 through the upper connecting plate 121; the two longitudinal supports 124 are relatively arranged on both sides of the horizontal support plate 111 along the width direction of the horizontal support plate 111, and the longitudinal supports 124 are fixedly connected to the scraper reducer 40 through the lower connecting plate 122.

[0042] It should be noted that the upper connecting plate 121 and the lower connecting plate 122 are used to respectively connect the upper and lower parts of the surface of the scraper reducer 40 to ensure uniform connection and force, and the diagonal brace 123 is used to support the upper connecting plate 121 to a certain height, and then the upper end of the diagonal brace 123 is fixedly connected to the scraper reducer 40 through the upper connecting plate 121; the longitudinal support 124 is used to connect the lower support plate and the horizontal support plate 111, and it extends from the side of the horizontal support plate 111 toward the scraper reducer 40, so as to extend to the surface of the scraper reducer 40, so as to facilitate the support connection of the lower support plate to the surface of the scraper reducer 40 and fix it; in this way, the limit protection device 30 and the scraper reducer 40 are connected as a whole through the reinforcement mechanism 10, which is convenient for the transmission connection to shake synchronously when rotating to avoid swinging.

[0043] As a preferred embodiment of the present invention, the connecting assembly 20 is a coupling 210 , and the input shaft 311 is connected to the driving shaft 410 of the scraper reducer 40 through the coupling 210 .

[0044] It is worth mentioning that, in the case of two shafts working together, the coupling 210 is a more preferred connection component 20, which has a compact structure that can greatly save installation space, has high strength, and can allow a certain degree of axial amplitude to compensate for the misalignment and deflection between the shafts.

[0045] Furthermore, the input shaft 311 is arranged coaxially with the driving shaft 410 of the scraper reducer 40 .

[0046] It should be noted that the coaxial centerline setting can ensure that there will be no deviation when the input shaft 311 and the drive shaft 410 of the scraper reducer 40 are connected. Because once the deviation connection is rotated, it is easy to cause the connection to swing, and it is impossible to achieve synchronous rotation. As a result, a large displacement occurs during rotation due to the deviation swing, causing damage to the coupling 210. Therefore, the coaxial centerline setting can be more convenient for connection protection; it is worth mentioning that the height position of the input shaft 311 can be controlled by adjusting the thickness of the horizontal support plate 111 or adding a pad. When the input shaft 311 and the drive shaft 410 of the scraper reducer 40 are at the same height, they are connected through the coupling 210 to form a coaxial centerline setting.

[0047] Furthermore, the scraper reducer 40 is cylindrical, and the upper connecting plate 121 and the lower connecting plate 122 are vertically arranged on both sides of the driving shaft 410 of the scraper reducer 40 and fixedly connected to the scraper reducer 40 .

[0048] It should be understood that the upper connecting plate 121 and the lower connecting plate 122 are arranged relative to each other in the vertical direction to ensure that the connection positions between the two and the scraper reducer 40 are evenly distributed, so that the vibration generated by the rotation can be evenly transmitted during operation, thereby ensuring that the structure is connected as a whole and the connection is stable.

[0049] Furthermore, the connection portion 120 further includes a plurality of reinforcement connection blocks 125 spaced apart along the width direction of the horizontal support plate 111 , and the reinforcement connection blocks 125 are connected between one end of the horizontal support plate 111 and the lower connection plate 122 .

[0050] It should be noted that since the lower connecting plate 122 is connected to the bottom, and the linked limit reducer 310 is prone to generate large vibrations when the scraper reducer 40 moves, it needs to be further reinforced to ensure a stable connection to avoid damage caused by swinging. Therefore, a plurality of reinforced connecting blocks 125 are added so that the plurality of reinforced connecting blocks 125 are connected between one end of the horizontal support plate 111 and the lower connecting plate 122.

[0051] Furthermore, the limit reducer 310 is fixedly connected to the horizontal support plate 111 by bolts.

[0052] It should be noted that the bolt connection method is convenient for disassembly and assembly, and it is also convenient to adjust the height of the limit reducer 310 at any time by using a pad, so as to further ensure that the input shaft 311 of the limit reducer 310 and the drive shaft 410 of the scraper reducer 40 are at the same height, that is, they are coaxially arranged.

[0053] Furthermore, the width of the upper connecting plate 121 and the lower connecting plate 122 are both 15 cm to 20 cm.

[0054] It can be understood that since the upper connecting plate 121 and the lower connecting plate 122 are connected to the surface of the scraper reducer 40 in a planar contact manner, the larger the contact surface, the more stable the connection. Therefore, in a preferred embodiment, the width of the upper connecting plate 121 and the lower connecting plate 122 can be set to 15cm~20cm, and technical personnel in this field can set it according to actual conditions.

[0055] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fan-shaped scraper limit protection structure for an electrostatic precipitator, characterized in that: It comprises a frame and a reinforcement mechanism, a connection assembly, a limit protection device and a scraper reducer arranged on the frame; wherein the reinforcement mechanism comprises a fixing part and a connection part, the fixing part is fixedly arranged on the frame, and the connection part is fixedly connected to the scraper reducer; The position limiting protection device comprises a position limiting reducer and a position limiting mechanism both mounted on the fixed part, the position limiting mechanism comprises a movable part and a stopper, the stopper is recessed inward to form an arc-shaped groove, the movable part is swingably arranged in the arc-shaped groove along the circumference of the arc-shaped groove, the position limiting reducer has an input shaft and an output shaft, wherein, The input shaft is connected to the driving shaft of the scraper reducer through the connecting assembly, and the output shaft is drivingly connected to the movable part.

2. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 1 is characterized in that: The fixing part is a horizontal support plate, the limiting reducer and the limiting mechanism are both fixed on the horizontal support plate, one end of the connecting part is fixedly connected to the side wall of the horizontal support plate, and the other end of the connecting part is fixedly connected to the scraper reducer.

3. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 2 is characterized in that: The connecting portion includes an upper connecting plate, a lower connecting plate, two diagonal braces and two longitudinal braces, wherein: The two oblique braces are relatively arranged on both sides of the horizontal support plate along the width direction of the horizontal support plate, and the upper ends of the oblique braces are fixedly connected to the scraper reducer through the upper connecting plate; The two longitudinal supports are relatively arranged on both sides of the horizontal support plate along the width direction of the horizontal support plate, and the longitudinal supports are fixedly connected to the scraper reducer through the lower connecting plate.

4. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 1 is characterized in that: The connecting assembly is a coupling, and the input shaft is connected to the driving shaft of the scraper reducer through the coupling.

5. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 1 is characterized in that: The limiting mechanism is a travel switch or a limit switch.

6. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 4 is characterized in that: The input shaft is arranged coaxially with the drive shaft of the scraper reducer.

7. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 3 is characterized in that: The scraper reducer is cylindrical, and the upper connecting plate and the lower connecting plate are vertically arranged on both sides of the driving shaft of the scraper reducer and are fixedly connected to the scraper reducer.

8. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 3 is characterized in that: The connection portion further includes a plurality of reinforcement connection blocks spaced apart along a width direction of the horizontal support plate, wherein the reinforcement connection blocks are connected between one end of the horizontal support plate and the lower connection plate.

9. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 3 is characterized in that: The limit reducer is fixedly connected to the horizontal support plate by bolts.

10. The electrostatic precipitator fan-shaped scraper limiting protection structure according to claim 7, characterized in that: The width of the upper connecting plate and the lower connecting plate are both 15 cm to 20 cm.

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