JP2013063389A - Fixation preventing cover of hammering apparatus, and electric dust collector having fixation preventing cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixation preventing cover which controls decrease in hammering capacity of a hammering apparatus by adhesion of deposition, and to provide an electric dust collector having the fixation preventing cover.SOLUTION: The fixation preventing cover 19 of a hammering apparatus 5 includes: a bracket 11 fixed to a rotary shaft 7; a hammer 9 having a hitting part 15 on a tip end; a pin 17 freely rotatably connected to a base end of the hammer 9 and the bracket 11, so that the hitting part 15 is raised by rotation of a rotary shaft 7 and dust particles adhered to a dust collecting electrode plate 3 are removed by hitting the hitting part 15 to the dust collecting electrode plate 3 using own weight of the hitting part 15. The fixation preventing cover 19 of a hammering apparatus 5 also includes a bag part 21 which covers the pin 17 and which is made of flexible materials allowing to rock the hammer 9 using the pin 17 as a fulcrum.

Description

  The present invention is a sticking prevention cover for a hammering device that removes deposits adhering to a structure, and in particular, removes deposits adhering to a structure such as a dust collecting electrode plate and a discharge wire by hammering. The present invention relates to an anti-sticking cover for an electrostatic precipitator striking device applicable to a striking device, and an electrostatic precipitator.

  In an electric dust collector (see Patent Document 1), dust adheres to the dust collecting electrode plate due to electric force (Coulomb force and Van der Waulls force), and the dust captured by the dust collecting electrode plate is beaten. It is peeled off by the impact force given by the device and discharged out of the system. This type of striking device includes a bracket fixed to a rotating shaft, and a hammer having a handle portion rotatably attached to the bracket and forming a predetermined link mechanism. In the hammering device, the hammer hitting part is lifted by the rotation of the rotating shaft, and when the hitting part is lifted to a predetermined height where the regulation is released, the hitting part naturally falls and hits the dust collecting electrode plate. Dust adhering to the electrode plate is removed.

Japanese Utility Model Publication No. 4-118146

  If the striking ability of the striking device is reduced, deposits such as dust that does not peel off will be present, which will gradually become a fixed layer and grow further. As the deposits increase, the electrical resistance increases, and the reverse ionization phenomenon in the deposit layer and the spark discharge phenomenon that repeats instantaneous short-circuiting frequently occur, and the dust collection rate of the electrostatic precipitator significantly decreases. Therefore, it is desirable to maintain the hitting ability of the hitting device during operation of the electrostatic precipitator.

  However, in the conventional hammering device, there is a possibility that dust in the electrostatic precipitator adheres to the link mechanism that connects the bracket and the hammer and grows. As a result, the link mechanism is fixed and does not move, the natural fall of the hammer hitting portion is hindered, and the hitting ability of the hitting device may be significantly reduced.

  An object of the present invention is to solve the above-described problems, and an anti-adhesion cover that suppresses a reduction in the striking ability of the striking device due to adhesion of an adhering substance, and an electric current collector provided with the anti-adhesion cover The purpose is to provide a dust container.

  The present invention includes a bracket fixed to a rotating shaft, a hammer provided with a striking portion at the tip, and a shaft support portion that rotatably connects the base end of the hammer and the bracket, and the striking portion by rotation of the rotating shaft. And a sticking prevention cover for the striking device that removes deposits attached to the structure by hitting the striking part against the structure by its own weight, covering the shaft supporting part, and using the shaft supporting part as a fulcrum. The bag portion is made of a flexible material that allows the hammer to swing.

  In the present invention, it is possible to prevent adhesion of the deposit by covering the shaft support portion, so that it is possible to suppress the disadvantage that the hammer is fixed to the bracket and the movement is restricted. Furthermore, since the bag portion covering the shaft support portion is made of a flexible material that allows the hammer to swing with the shaft support portion as a fulcrum, it does not interfere with the operation of the hammer. As a result, it is possible to suppress a decrease in the striking ability of the striking device due to adhesion of the deposit, and to stably maintain the striking ability of the striking device over a long period of time.

  Furthermore, it is preferable that the bag portion includes a bag body portion that covers the shaft support portion and a positioning portion that is connected to the rotation shaft and holds the bag body portion at a predetermined position that covers the shaft support portion. By providing the positioning portion, the bag main body portion can be easily held at a predetermined position, which is effective from the viewpoint of preventing the adhesion of adhered matter.

  Furthermore, it is preferable that the positioning portion is a cylindrical member that covers the rotation shaft while avoiding the bracket, so that the connection of the positioning portion to the rotation shaft can be made more reliable.

  Furthermore, it is preferable that the bag portion covers the portion from the tip of the hammer to the shaft support portion while avoiding the striking portion. In this configuration, it is possible to form a state in which the mouth of the bag portion is closed with a hammer, and as a result, it is possible to effectively prevent the deposit from entering the bag portion and adhering to the shaft support portion.

  Moreover, said structure is a dust collection electrode plate of an electrostatic precipitator, and it is suitable if a bag part covers the axial support part of the strike device of an electrostatic precipitator. It is possible to suppress a decrease in the striking ability of the striking device that removes deposits adhering to the dust collecting electrode plate, and to stably maintain the striking ability of the striking device in the electric dust collector over a long period of time.

  Furthermore, it is preferable that the flexible material of the bag portion has a heat resistance of at least 200 ° C. The ambient temperature of the electrostatic precipitator strike device is assumed to reach 160 ° C. or higher, and can be suitably applied to an electrostatic precipitator by having heat resistance of at least 200 ° C.

  Moreover, this invention is an electrical dust collector provided with the striking device equipped with said sticking prevention cover. In this invention, since the fall of the striking ability of the striking device due to the adhering matter can be suppressed, it is possible to effectively restrain the dust collection function from being lowered due to the fall of the striking ability of the striking device.

  ADVANTAGE OF THE INVENTION According to this invention, the fall of the striking ability of the striking device by adhesion of a deposit | attachment can be suppressed.

It is an electric dust collector concerning the embodiment of the present invention, and is a perspective view showing a hammering device mainly. It is a top view which expands and shows the sticking prevention cover concerning 1st Embodiment of this invention with which the hammering device was mounted | worn. It is sectional drawing along the III-III line of FIG. 2, (a) is a figure which shows the state which has a hammer below, (b) is a bracket rotating in response to rotation of a rotating shaft, As a result It is a figure which shows the state which the arm part of the hammer was pulled up slightly. It is a top view of the sticking prevention cover concerning a 1st embodiment. It is a figure which shows typically the movement of the hammer which moves in conjunction with rotation of a rotating shaft and a bracket, (a) is a figure which shows the state where the arm part of the hammer was carried on the rotating shaft, (b) is a figure which shows the state which the regulation | regulation of the hammer was released, and the fall started by the dead weight, (c) is a figure which shows the state which the hammering | braking part of the hammer is colliding with the hit | damage part of a dust collecting plate is there. It is a top view which shows the hammering apparatus which concerns on 2nd Embodiment of this invention, and a sticking prevention cover.

  Hereinafter, a sticking prevention cover of a striking device according to a preferred embodiment of the present invention will be described. Before explaining the sticking prevention cover, an electric dust collector and a striking device will be described first. In addition, this invention is not limited to the following embodiment, The aspect which embodies this invention is included widely.

  An electric dust collector (see FIG. 1) 1 is a dust collection system that applies an electric force or the like (Coulomb force and Van der Waulls force), and includes a discharge line and a dust collection electrode plate 3. In the electrostatic precipitator 1, corona discharge is caused by applying a high voltage to the discharge line, and dust particles such as fly ash are charged by negative ions generated by the corona discharge. The charged dust particles (adhered matter) are collected by the dust collecting electrode plate 3 by electric force or the like, and as a result, the gas passing between the discharge line and the dust collecting electrode plate 3 is cleaned.

  In the electric dust collector 1, in order to continuously remove dust, it is necessary to peel off dust particles adhering to the dust collecting electrode plate 3 and discharge them outside the system. Therefore, the electrostatic precipitator 1 includes a hammering device 5 that applies an impact force to the dust collecting electrode plate 3 to remove dust particles adhering to the dust collecting electrode plate 3. In the present embodiment, the dust collecting electrode plate 3 is an example of a structure.

  As shown in FIG. 1 and FIG. 2, the striking device 5 includes a rotating shaft 7 connected to the drive unit, and a plurality of hammers 9 connected to the rotating shaft 7 via a link mechanism 8. Yes. The rotating shaft 7 is provided with a plurality of brackets 11 at equal intervals along the axial direction and shifted from each other in the circumferential direction (rotating direction). A hammer 9 is attached to each bracket 11. Yes.

  The hammer 9 includes an arm portion 13 made of a pair of long steel materials 13 a and a striking portion 15 fixed to the tip of the arm portion 13. The striking portion 15 made of a heavy object is fixed so as to be sandwiched between one end portions of the pair of long steel materials 13a.

  The proximal end of the hammer 9, that is, the other end of the pair of long steel members 13 a is rotatably connected to the bracket 11 via a pin 17 with the bracket 11 interposed therebetween. A pin 17 that rotatably connects the arm portion 13 and the bracket 11 corresponds to a shaft support portion. The link mechanism 8 is formed by the bracket 11 of the rotating shaft 7, the pin 17, and the arm portion 13 of the hammer 9.

  When the rotary shaft 7 rotates from the state where the hammer 9 is hanging downward, the bracket 11 rotates in conjunction with the rotation. Then, the base end of the hammer 9 connected to the bracket 11 is lifted, and the striking portion 15 fixed to the tip of the arm portion 13 is also lifted. When the bracket 11 rotates and the tip of the bracket 11 reaches a position facing slightly upward, the arm portion 13 of the hammer 9 comes into contact with the rotating shaft 7 and is put on the back (see FIG. 5A). ). The hammer 9 is restricted from moving (swinging) when the arm portion 13 is carried on the rotating shaft 7 and rotates together with the rotating shaft 7 in this state.

  When the bracket 11 rotates as it is and reaches the upper position where the restriction of the hammer 9 is released, the striking portion 15 of the hammer 9 falls down vigorously by its own weight (see FIGS. 5B and 5C) and collects dust. It collides with the hit part 3a of the electrode plate 3. As a result, an impact force is applied to the dust collecting electrode plate 3, and dust particles adhering to the dust collecting electrode plate 3 are removed. By repeating the above operation, the hammer 9 repeatedly strikes the dust collecting electrode plate 3 and continuously removes dust particles adhering to the dust collecting electrode plate 3.

  The electrostatic precipitator 1 and the striking device 5 have been described above, and the anti-adhesion cover 19 is attached to the striking device 5. Next, the sticking prevention cover 19 will be described with reference to FIGS. 2, 3, and 4.

  As already described, in order to operate the electrostatic precipitator 1 continuously for a long period of time, it is necessary to periodically remove dust particles such as fly ash adhering to the dust collecting electrode plate 3 and to discharge them to the outside. . If the efficient peeling function is lost, the dust collection efficiency gradually decreases, and eventually dust particles may form a bridge between the discharge wire and the dust collection electrode plate 3 to cause a short circuit. is there. As a result, the dust concentration management value cannot be controlled to a desired value or less, and there is a possibility that the facility must be stopped.

  In order to eliminate the above problems, various types of devices for removing dust particles have been proposed in the past, but generally, a mechanical hammering device is used as in this embodiment. Many. This is because the area of the dust collecting electrode plate 3 is generally large, and in other types of peeling / removing apparatuses, the dust particle peeling property is often not good, and a large mechanical impact is applied to the dust collecting electrode plate. This is because the beating method applied to the entire surface is the most effective.

  However, the hammering device 5 includes the link mechanism 8 because the hammer 9 needs to be swung. If dust particles adhere to the pin (shaft support portion) 17 of the link mechanism 8, the hammering device 5 may malfunction. . In particular, when the electrostatic precipitator 1 is a boiler combustion gas treatment device such as a power generation facility, the cause of sticking is ammonium sulfate in dust particles generated due to sulfur content in the fuel, and the adhesion is extremely high. It is difficult to achieve a fundamental solution by improving the striking device 5 because it is very expensive and hard.

  On the other hand, when the idea is completely different from the conventional technical idea, that is, based on a new idea of covering the link mechanism 8 of the striking device 5 to prevent sticking, the range of motion of the arm portion 13 including the link mechanism 8 is considered. Because of its large size, it is difficult to shield the link mechanism 8 from the outside, and the inside of the electrostatic precipitator 1 has a high temperature corrosive gas atmosphere, so there are many problems to be solved. It was very difficult to materialize.

  However, the inventor of the present case has repeatedly studied on the basis of the above-mentioned new idea, and as a result of further various ideas and improvements, the above-mentioned new idea can be realized to a practical level by the following ideas and improvements. And gained knowledge. That is, the link mechanism 8 is covered with a flexible material that does not hinder the movement of the striking device 5, and the motion trajectory centering on the link mechanism 8 of the striking device 5 is simulated to obtain the optimum It is a knowledge such as designing with dimensions and shapes, and further, as a material for covering the link mechanism 8, a material that satisfies the requirements of heat resistance, corrosion resistance, toughness and the like according to the use environment. Hereinafter, the sticking prevention cover 19 which has been completed based on these findings will be described in detail.

  The anti-adhesion cover 19 is a cloth-like member (flexible material) having flexibility, and is manufactured by, for example, three-dimensional sewing using heat-resistant glass sewing threads. Here, the flexible material means a degree of flexibility that can be freely deformed following the movement of the hammer 9 when the hammer 9 swings, that is, tilts with respect to the bracket 11.

  The sticking prevention cover 19 includes a substantially T-shaped bag portion 21 that is attached to the striking device 5 so as to cover a part of the rotating shaft 7 in the vicinity of the bracket 11 and the entire link mechanism 8. Note that the anti-adhesion cover 19 according to the present embodiment is assumed to be attached to the hammering device 5 of the electrostatic precipitator 1 and has a heat resistance of at least 200 ° C.

  The bag portion 21 includes a cylindrical horizontal bag portion 22 that covers the rotation shaft 7 and a cylindrical vertical bag portion 23 that is connected to the center of the horizontal bag portion 22. The vertical bag portion 23 corresponds to a bag body portion, and the horizontal bag portion 22 corresponds to a positioning portion.

  The side bag portion 22 can be opened by opening the cylindrical shape, and can be wound around the rotary shaft 7 so that the peripheral edge portions 22a overlap each other. A hook-and-loop fastener (detachable portion) 24 that is detachable is provided on the peripheral edge portions 22a that overlap each other. The hook-and-loop fastener 24 is made of stainless steel and is devised to withstand high temperatures and impacts.

  At both ends in the longitudinal direction of the lateral bag portion 22, a narrowed portion 22 b is provided that closes the opening by tightening the string and closes the gap generated between the rotary shaft 7. Further, the lateral bag portion 22 is formed with a hole H through which the bracket 11 passes when wound around the rotary shaft 7, and the hole H communicates with the inside of the vertical bag portion 23.

  The vertical bag portion 23 has a substantially tapered shape which is wide on the side connected to the horizontal bag portion 22 and narrow on the opposite side. Moreover, the inner diameter of the vertical bag part 23 has a width | variety of the grade which the striking part 15 of the hammer 9 passes in the edge part which is the narrowest, for example. This is in consideration of the convenience when the hammer 9 is inserted into the vertical bag portion 23 from the side of the horizontal bag portion 22 and the hammering portion 15 of the hammer 9 is exposed so as to cover the entire link mechanism 8. is there.

  Further, the vertical bag portion 23 is provided with a pocket portion 23a in which a portion close to the horizontal bag portion 22 is intentionally inflated. The pocket portion 23 a is a portion that forms a region for escaping the arm portion 13 that swings in conjunction with the rotation of the bracket 11. The pocket portion 23a can more reliably prevent interference with the movement of the arm portion 13 and obstructing the movement. In addition, the end portion of the vertical bag portion 23 on the side where the striking portion 15 is exposed is provided with a constriction portion 23b that constricts the mouth by tightening a string and closes a gap formed between the arm portion 13 and the mouth portion.

  When attaching the anti-adhesion cover 19 to the hammer 9, the lateral bag portion 22 is opened, the hammering portion 15 of the hammer 9 and the arm portion 13 are passed through the hole H of the lateral bag portion 22, and inserted into the longitudinal bag portion 23. To do. When the striking portion 15 of the hammer 9 is pulled out from the mouth of the end portion of the vertical bag portion 23, the string of the squeezing portion 23b is squeezed and the mouth of the vertical bag portion 23 is closed. Next, the opened lateral bag portion 22 is wound around the rotary shaft 7 and fixed with the hook-and-loop fastener 24. Next, the squeezed portions 23b at both ends of the side bag portion 22 are squeezed, the mouth of the side bag portion 22 is closed, and the mounting is completed.

  In the sticking prevention cover 19 according to the present embodiment, dust particles can be prevented from adhering by covering the link mechanism 8, particularly the pin (shaft support part) 17, so that the hammer 9 is stuck to the bracket 11 and the movement is restricted. The inconvenience that is done can be suppressed. Further, since the bag portion 21 is lightweight and is made of a flexible material that allows the hammer 9 to swing with the shaft support portion as a fulcrum, it does not interfere with the operation of the hammer 9. As a result, it is possible to suppress a decrease in the striking ability of the striking device 5 due to adhesion of dust particles, and to stably maintain the striking ability of the striking device 5 over a long period of time. Moreover, since the bag part 21 consists of a flexible material, the impact force at the time of a strike is disperse | distributed and there exists an effect of preventing damage to the bag part 21 itself.

  Further, the bag portion 21 of the sticking prevention cover 19 includes a horizontal bag portion 22 connected to the rotary shaft 7, and the vertical bag portion 23 is connected by winding the horizontal bag portion 22 around the rotary shaft 7. The pin 17 can be held at a predetermined position. Therefore, compared with the case where the link mechanism 8 is covered only by the vertical bag portion 23 without the horizontal bag portion 22, the vertical bag portion 23 becomes difficult to be displaced and is easily held at a predetermined position, and the viewpoint of preventing the adhesion of dust particles. It is effective from.

  The vertical bag portion 23 is an example of a bag main body portion, and the horizontal bag portion 22 is an example of a positioning portion. As the positioning portion, for example, the vertical bag portion 23 is provided so as to be connected to the rotary shaft 7. It may be a string or a tape (band). However, as in the present embodiment, the connection of the lateral bag portion 22 to the rotating shaft 7 is made more reliable by using the cylindrical lateral bag portion 22 that covers the rotating shaft 7 while avoiding the bracket 11. This is preferable.

  Further, the bag portion 21 of the sticking prevention cover 19 covers the entire link mechanism 8, that is, the hammering portion 15 and covers the tip of the hammer 9 to the pin 17. As a result, it is possible to form a state in which the mouth of the vertical bag portion 23 is closed with the hammer 9, and as a result, it is effective that dust particles enter the vertical bag portion 23 and adhere to the pins 17. Can be prevented.

  Further, the sticking prevention cover 19 is a member independent of the striking device 5, and exhibits a sticking preventing effect as a single unit. Therefore, no additional work is required when it is installed in the existing striking device 5. Moreover, since it is detachable from the striking device 5, it is not necessary to disassemble the existing striking device 5 at the time of attachment, and it can be easily removed even when washing the water when the electrostatic precipitator 1 is stopped. It is.

(Second Embodiment)
Next, the sticking prevention cover 33 attached to the striking device 31 according to the second embodiment will be described with reference to FIG. In addition, about the striking device 31 which concerns on 2nd Embodiment, and the sticking prevention cover 33, about the structure and member similar to 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The striking device 31 includes a rotary shaft 7 connected to a drive source, a hammer attachment metal 35 fixed to the rotary shaft 7, a hammer 39 provided with a striking portion 37 at the tip, a base end of the hammer 39, and a hammer. And a pin 41 that rotatably connects the mounting hardware 35. The hammer mounting hardware 35 has a pair of protruding plate portions 35 a provided so as to protrude in the radial direction of the rotating shaft 7, and the pin 41 connects the protruding plate portions 35 a at the tip of the protruding plate portion 35 a. So that it is fixed. The arm portion 38 of the hammer 39 is made of a single steel material, and the base end of the hammer portion 38 is rotatably connected to the hammer attachment hardware 35 via a pin 41. The hammer mounting hardware 35 is an example of a bracket, and the pin 41 is an example of a shaft support portion.

  The sticking prevention cover 33 includes a bag portion 42 made of a flexible material that covers the pin 41 and allows the hammer 39 to swing with the pin 41 as a fulcrum. The bag portion 42 includes a cylindrical vertical bag portion 43 that covers the entirety of the hammer mounting hardware 35 so as to include the pins 41, and a cylindrical horizontal bag portion 44 that covers a part of the rotating shaft 7 in the vicinity of the hammer mounting hardware 35. And has a substantially T-shape. Further, the sticking prevention cover 33 has a heat resistance of at least 200 ° C.

  The bag portion 42 according to the present embodiment is configured not to cover the entire link mechanism 45 but to cover a part of the link mechanism 45, that is, the hammer attachment hardware 35 including the pins 41. In the striking device 5 according to the first embodiment, since the arm portion 13 is formed from a pair of long steel materials 13a, the pair of long steel materials 13a is not covered unless the entire link mechanism 8 including the entire arm portion 13 is covered. There was a possibility that dust particles entered from the gap between them. However, in this embodiment, since the arm portion 38 of the hammer 39 is made of a single steel material, there are few similar concerns. Therefore, the bag portion 42 is configured by covering the hammer attachment hardware 35 including the pin 41. The entry of dust particles into the inside can be effectively prevented, and the adhesion of dust particles to the pins 41 can be effectively prevented.

  According to the sticking prevention cover 33 according to the present embodiment, the same effect as that of the sticking prevention cover 19 according to the first embodiment is obtained, and in particular, a reduction in the striking ability of the striking device 31 due to adhesion of dust particles is suppressed. The striking ability of the striking device 31 can be stably maintained over a long period of time.

  Hereinafter, specific examples will be described, but the present invention is not limited to the following examples.

[Example 1]
1. A typical internal environment of the electrostatic precipitator according to the first embodiment of the present invention is as follows.
(1) Gas volume: 400,000 [m ³ N / h · wet]
(2) Gas temperature: 165 [° C]
(3) Static gas pressure -0.1 [kPa]
(4) Gas composition CO ² ... 12 [Vol% · wet]
H ₂ O 9.5 [Vol% ・ wet]
N ₂ ... 75 [Vol% ・ wet]
O ₂ ... 3 [Vol% · wet]
SO ₂ ... 3,600 [Volppm ・ dry]
NH ₃ ... 100 [Volppm ・ dry]
(5) Dust average particle diameter: 1 to 5 [μm]

2. The method for manufacturing and attaching the anti-adhesion cover is as follows.
(1) The material for the anti-adhesion cover was selected to have a performance that can withstand the usage environment.
(2) The shape of the anti-adhesion cover was designed so as not to hinder the movement based on the simulation result of the trajectory of the striking device, and three-dimensional sewing was performed.
(3) When attaching the anti-adhesion cover, an easily attachable / detachable and highly adhesive tape was disposed at the joint of the cover so that it was not necessary to disassemble the hammering device.

3. Evaluation The results of continuous operation of the boiler equipment including the electrostatic precipitator for one year in a state where the anti-adhesion cover according to the present example is mounted on the hammering device are reported. The impact sound and vibration generated when the hammer of the hammering device collides are measured regularly (about once a month) from the outside of the electrostatic precipitator with an auscultation stick or vibrometer, and the hammering ability decreases over time. It was confirmed that there was no. Moreover, the same evaluation was carried out at the same regular work timing for the striking device not equipped with the sticking prevention cover. With respect to the unattached hitting device, those that became unable to confirm the hitting sound started 7 months after the start of operation. In fact, after operating the electrostatic precipitator continuously for 7,800 hours, the inside of the electrostatic precipitator is inspected. 80% or more were completely fixed and did not move. With respect to the striking device equipped with the anti-adhesion cover, when the anti-adhesion cover was removed and the link mechanism of the hammer was visually confirmed, adhesion of dust particles could hardly be confirmed.

  The present invention has been described with reference to each embodiment and example. However, the present invention is not limited to only the above embodiment and example. That is, in each of the above-described embodiments and examples, the sticking prevention cover attached to the hammering device of the electrostatic precipitator has been described. However, as the hammering device, for example, it is attached to a pipe or duct inside a plant facility. An apparatus that removes the deposit by mechanical impact when the kimono adheres is also conceivable, and the sticking prevention cover according to the present invention may be attached to this type of apparatus. In this case, since it is assumed that the heat resistance as high as that of the electrostatic precipitator is not required, it is necessary to select a material appropriately according to the use mode.

  DESCRIPTION OF SYMBOLS 1 ... Electric dust collector, 5, 31 ... Striking device, 3 ... Dust collection electrode plate (structure), 7 ... Rotating shaft, 9, 39 ... Hammer, 11 ... Bracket, 15, 37 ... Striking part, 17, 41 ... Pin (shaft support), 19, 33 ... Anti-adhesion cover, 21, 42 ... Bag part, 23, 43 ... Vertical bag part (bag body part), 22, 44 ... Horizontal bag part (positioning part), 35 ... Hammer mounting hardware (bracket).

Claims (7)

A bracket fixed to the rotating shaft; a hammer provided with a hitting portion at a tip; and a shaft support portion that rotatably connects the proximal end of the hammer and the bracket; and the hitting by rotation of the rotating shaft An anti-stick cover for the striking device that lifts the portion and strikes the striking portion against the structure by the weight of the striking portion to remove deposits attached to the structure,
An anti-sticking cover for a striking device, comprising a bag portion made of a flexible material that covers the shaft support portion and allows the hammer to swing with the shaft support portion as a fulcrum.   The bag portion includes a bag body portion that covers the shaft support portion, and a positioning portion that is connected to the rotating shaft and holds the bag body portion at a predetermined position that covers the shaft support portion. The sticking prevention cover of the striking device according to claim 1.   The sticking prevention cover of the striking device according to claim 2, wherein the positioning portion is a cylindrical member that covers the rotating shaft while avoiding the bracket.   The sticking prevention cover of the striking device according to any one of claims 1 to 3, wherein the bag portion covers the portion from the tip of the hammer to the shaft support portion while avoiding the hitting portion. The structure is a dust collecting electrode plate of an electric dust collector,
The sticking prevention cover of the striking device according to any one of claims 1 to 4, wherein the bag portion covers the shaft support portion of the striking device of the electric dust collector.   The anti-adhesion cover of the striking device according to claim 5, wherein the flexible material has a heat resistance of at least 200 ° C.   An electrostatic precipitator comprising the sticking prevention cover according to claim 5 and a striking device to which the sticking prevention cover is attached.

Images