WO2014196310A1

WO2014196310A1 - Cremation system

Info

Publication number: WO2014196310A1
Application number: PCT/JP2014/062454
Authority: WO
Inventors: 眞知子浅岡
Original assignee: 東京博善株式会社
Priority date: 2013-06-06
Filing date: 2014-05-09
Publication date: 2014-12-11
Also published as: JPWO2014196310A1; JP5735188B1

Abstract

[Problem] To provide a cremation system provided with an electric dust collector apparatus for stabilizing for a long period of time and removing harmful substances included in the exhaust gas from a crematory furnace, and when set to a maintenance mode, widening the operation space of a hammering device constituting the electric dust collector, allowing efficient performance of inspection and maintenance. [Solution] The dust-collection electrode hammering device constituting the electric dust collector has: dust-collection electrode hammering cams (51B) provided at respectively different angles relative to a reference line at horizontal positions <1>-<16> on a camshaft (35B); and dust-collection electrode hammering hammers in sliding contact over a prescribed angle range with each of the cams (51B), such that when the camshaft (35B) is controlled to a rotation angle corresponding to the maintenance mode, none of the cams (51B) in positions <1>-<16> are in contact with the dust-collection electrode hammering hammers. Therefore, the dust-collection electrode hammering hammers hang down due to their own weight, making it possible to secure a wide operation space.

Description

Cremation system

The present invention relates to a cremation system, and more particularly to a cremation system including an electric dust collector for removing harmful substances contained in exhaust gas discharged from a cremation furnace.

Exhaust gas discharged from the cremation furnace contains odorous components such as ammonia, sulfur compounds, hydrogen sulfide as well as a large amount of dust and nitrogen oxides (NOx), and may contain dioxins in some cases, and nitrogen oxidation It has a unique property that the concentration of NOx (NOx) and the temperature of the exhaust gas change rapidly in a short time. On the other hand, urban cremation facilities, which have been increasing in recent years, are often built adjacent to residential areas and are stable even when the temperature and flow rate of exhaust gas changes, as well as maintaining cleanliness of exhaust gas exceeding environmental regulations. Therefore, there is a strong demand for treating a large amount of exhaust gas.

As the exhaust gas treatment, a method of treating exhaust gas by combining an electric dust collector and a catalyst device is described in Patent Document 1 (Japanese Patent Laid-Open No. 2002-310410), and will be specifically described with reference to FIG. The exhaust gas treatment apparatus described in 10 includes a main combustion furnace 101, a recombustion furnace 102, a gas cooling zone 103 provided on the downstream side of the recombustion furnace 102, and a dust collecting means 104 and a catalyst provided on the downstream side. Layer 105, and after reducing the exhaust gas temperature in the gas cooling zone 103, dust containing alkaline substances is removed by dust collecting means 104 such as a bag filter, and the catalyst layer 105 set at a predetermined temperature It is configured to perform denitration and deodorization and removal of dioxins. The exhaust gas treatment apparatus shown in FIG. 10 improves the durability of the catalyst layer 105 by disposing a dust collecting means 104 such as a bag filter, an electrostatic precipitator, or a ceramic filter in the previous stage of the catalyst.

As a general aspect when the dust collecting means 104 described in the above publication is configured as an electric dust collector, a plate-shaped dust collecting electrode arranged in the direction in which the exhaust gas flows and a discharge electrode facing the dust collecting electrode are used. A high voltage is applied to the electrode to generate a corona discharge. The dust in the exhaust gas flowing between the electrodes is given a charge generated by the corona discharge, and the charged dust is collected on the dust collecting electrode by the action of an electrostatic field. is doing.

As explained above, since a large amount of dust adheres to the dust collection electrode during the cremation operation, it is indispensable to periodically clean the electric dust collector after the cremation is over. Patent Document 2 (Japanese Patent No. 2514411) describes a method of mechanically striking using a striking device and cleaning dust adhering to the discharge electrode and the dust collecting electrode. Refer to FIG. explain.

FIG. 11 is a perspective view of the electrostatic precipitator described in this publication, and a dust collection chamber 1103 constituted by a discharge electrode 118, a dust collection electrode 119, a discharge electrode striking device 1101, and a dust collection striking device 1102, An insulator chamber 1104 in which a support insulator for supporting the discharge electrode 118 is accommodated, and an unloading device 1105 provided to unload the collected dust collected in the dust collecting chamber 1103 out of the electric dust collector. And a DC high voltage generator 1106 for supplying a DC high voltage to the discharge electrode 118 constitutes an electrostatic precipitator.

As a method for cleaning the electric dust collector, the discharge electrode striking device 1101 and the dust collecting electrode striking device 1102 strike the discharge electrode 118 and the dust collecting electrode 119, respectively. The dust adhering to 119 is scattered and dropped, and the dust that has fallen and dropped is carried out of the electrostatic precipitator by the discharging device 1105 and cleaned.

Also, as another prior art of the electrostatic precipitator strike device, there is Patent Document 3 (Japanese Utility Model Laid-Open No. 5-63648), which will be described with reference to FIG. FIG. 12 is a plan view of the electrostatic precipitator described in this publication. The

striking devices

121, 122, 123, and 124 are disposed on the upstream side of the gas, and the

striking devices

125 and 126 are disposed on the downstream side of the gas. Each hammering device is configured such that a rotating shaft to which a movable hammer is connected is disposed in each dust collection chamber from the side of the electric dust collector. This reduces the installation space for the electric dust collector and facilitates maintenance and inspection.

JP 2002-310410 A

Japanese Patent No. 2514411

Japanese Utility Model Publication No. 5-63648

The exhaust gas treatment apparatus according to the first prior art described in Patent Document 1 improves the durability and clogging of the catalyst layer 105 by disposing the dust collecting means 104 in the previous stage of the catalyst layer 105. There is no description about a cleaning method when dust adheres to the dust collecting means 104. More specifically, when a bag filter is used as the dust collecting means 104, it is necessary to lower the temperature of the exhaust gas flowing into the bag filter, so that the catalytic performance of the catalyst layer 105 arranged at the rear stage of the bag filter is lowered. Therefore, there is a problem from the cleanliness of the final exhaust gas. On the other hand, when an electric dust collector is used as the dust collecting means 104, since a large amount of dust discharged from the cremation furnace adheres to the dust collecting electrode constituting the dust collecting means 104, regular cleaning and maintenance of the electric dust collector is indispensable. Absent. This cleaning and maintenance is an important issue in order to stably operate the entire cremation system in the long term, as well as measures against clogging of the catalyst layer 105. In the exhaust gas treatment apparatus described in this publication, This point of view is missing.

Further, in the cleaning method of the electric dust collector described in Patent Document 2, the discharge electrode striking device 1101 and the dust collecting electrode striking device 1102 strike the discharge electrode 118 and the dust collecting electrode 119, respectively, and the dust is scattered and dropped. The dust is discharged from the electrostatic precipitator 1105 by the discharge device 1105. However, as shown in the dust collecting striker described in FIG. 3 of this publication, when an operator performs inspection and maintenance. There is a problem that the hammer attached to the rotating shaft jumps out to the worker side and the workability is poor. In particular, in the case of the large-sized electrostatic precipitator shown in FIG. 11, it does not matter so much, but in the case of a small and medium-sized electrostatic precipitator, the space for inspection and maintenance is designed to be as narrow as possible. There is a problem that workability of inspection and maintenance deteriorates. Ensuring an effective work space for inspection and maintenance is very important for efficiently carrying out these operations. However, this publication does not disclose technical disclosure or suggestion regarding this problem.

In addition, as shown in FIG. 12, the hammering device for the electric dust collector described in Patent Document 3 has the hammering device for the outer dust collection chamber among the dust collection chambers arranged upstream of the exhaust gas with respect to the dust collection electrode. At the same time, by installing the hammering device of the dust collection chamber on the opposite side so that it is on the downstream side of the exhaust gas, the rotation conversion device, shaft rotation transmission device, vertical shaft and dedicated shaft in the electric dust collector It eliminates the need for installation, reduces installation space, and facilitates maintenance and inspection. However, similar to the method of cleaning an electrostatic precipitator described in Patent Document 2, when performing inspection and maintenance of a small and medium-sized electrostatic precipitator, a hammer or the like becomes an obstacle to perform these operations efficiently. Is difficult.

In particular, in the case of an urban cremation system, the electrostatic precipitator is installed on a limited floor coexisting with other devices such as a cremation furnace and a catalytic device, so that it is required to make the electrostatic precipitator as small as possible. For this reason, the work space for performing inspection and maintenance is designed to be suppressed as much as possible. On the other hand, it is very important to perform inspection and maintenance efficiently in a narrow work space. However, this publication does not disclose technical disclosure or suggestion regarding this problem.

Furthermore, it is important to quickly install a large number of discharge electrodes and dust collection electrodes inside the electrostatic precipitator in order to shorten the construction period of the entire cremation system. However, all of the above three patent publications disclose discharge electrodes and dust collection electrodes. No installation or replacement method is described. Moreover, although the discharge electrode and the dust collecting electrode that have deteriorated during use need to be replaced, it is necessary to efficiently perform the replacement work.

In particular, in the case of small and medium-sized electrostatic precipitators, the space for installing or replacing the discharge electrode and the collection electrode is limited, and the discharge electrode and the collection electrode are required for efficient installation or replacement work. However, none of the above publications provide technical disclosure or suggestions for efficient installation or replacement work. In addition, it is important to improve the cremation system efficiency by shortening the suspension period of the cremation system and performing the above-mentioned installation or replacement work in a short time. There is no mention of the technical idea of stable and efficient operation.

Further, as shown in FIG. 11, since the insulator chamber 1104 provided at the upper part of the electric dust collector main body and provided with an insulator for supporting the discharge electrode is conventionally provided independently for each insulator, each insulator is provided. In order to perform the inspection and maintenance, it is necessary for the worker to visit each insulator chamber 1104 in order to perform the inspection and maintenance, and there is a problem that workability is extremely poor.

The present invention provides a cremation system that suitably solves the above problems.

The cremation system of the present invention is a cremation system provided with a combustion furnace for burning a body and an electric dust collector for collecting dust from the exhaust gas from the combustion furnace, and the electric dust collector is configured to be rotatable. A plurality of striking cams provided at predetermined positions in the longitudinal direction of the camshaft, and the striking cams that are pressed by the striking cams within a predetermined angular range and rotated in one direction. A plurality of striking hammers that are paired with the striking cam that rotates in the opposite direction, striking transmission means that impacts when the striking hammer collides, and impact force from the striking transmission means When the electrostatic precipitator is set to a maintenance mode, the plurality of striking cams and the plurality of striking hammers are provided when the electrostatic precipitator is set in a maintenance mode. Hammer and Deviation also configured so that the rotation control of the cam shaft so as not to contact is made.

In addition, the cremation system of the present invention may be configured such that when the maintenance mode is set, all the hammer head parts constituting the hammering hammer hang down vertically due to their own weight.

Further, the striking device comprises a discharge electrode striking device that releases dust particles attached to the discharge electrode, and a dust collecting electrode striking device that releases dust particles attached to the dust collecting electrode, The discharge electrode striking device is disposed above the dust collecting electrode striking device, and when the maintenance mode is set, the plurality of paired striking cams constituting the dust collecting electrode striking device and the plurality of striking cams The camshaft rotation control may be performed such that none of the hammering hammers come into contact with the hitting hammer, and the camshaft rotation control may not be performed on the discharge electrode striking device.

Further, a striking cam arrangement angle range in which the striking cam is disposed at an equal angle on the camshaft, and a striking cam which is adjacent to the striking cam arrangement angle range and in which the striking cam is not disposed on the camshaft. A non-arrangement angle range, and one end of a boundary between the striking cam arrangement angle range and the striking cam non-arrangement angle range is substantially vertically downward from a central axis of the camshaft. It may be configured.

Further, the striking cam that rotates in the first rotation direction around the first rotation axis contacts the striking cam within a predetermined rotation angle range, and the second rotation shaft is in contact with the striking cam. A striking hammer that has a striking arm that rotates in the first rotation direction around the striking arm, and a striking hammer that forms an obtuse angle with the striking arm and has a hammer head at the tip. Exceeds the predetermined rotation angle range, the contact state between the striking cam and the striking arm is released, and the hammer arm and the hammer head are rotated in the second direction opposite to the first rotational direction. You may comprise so that it may fall by the dead weight in the direction and may rotate.

The hammer arm has a discharge electrode hammering hammer arm constituting the discharge electrode hammering device, and a dust collecting hammer hammer arm constituting the dust collecting pole hammering device, You may comprise so that the length of the dust collecting hammering hammer arm may be longer than the length of the discharge electrode hammering arm.

Further, the discharge electrode and the dust collection electrode may be paired, and a discharge electrode / dust collection electrode unit having a plurality of pairs may be provided.

A plurality of insulators provided on an upper portion of the electrostatic precipitator body, and a part of the insulators and the discharge electrode suspension bolts, in order to hang down the discharge electrodes and insulate the discharge electrode suspension bolts that supply a high voltage; The insulator chamber may be configured such that a part of the discharge electrode suspension bolt and all of the insulator are accommodated in a single chamber.

In the cremation system of the present invention, the electrostatic precipitator has a normal mode and a maintenance mode. When the electrostatic precipitator is set to the maintenance mode, all the striking hammers constituting the striking device are substantially vertically downward by their own weight. As a result, the working space is substantially expanded, and the inspection and maintenance of the electric dust collector are improved. In particular, in an electric dust collector used for an urban cremation system, it is strongly demanded to reduce the size of the electric dust collector. The cremation system according to the present invention aims to reduce the size of the device and to perform inspection and maintenance work of the cremation system. Efficiency can be improved.

Further, in the electric dust collector used in the cremation system of the present invention, the discharge electrode and the dust collection electrode installed inside the electric dust collector are unitized as a discharge electrode / dust collection electrode unit. Unit installation and replacement can be performed efficiently. In other words, a discharge electrode / dust collection electrode unit manufactured at the factory is transported to the work site where the cremation system is constructed, and is installed or replaced as an discharge electrode / dust collection electrode unit in an electric dust collector. Compared with the method of installing or replacing the electrode or one dust collecting electrode, the working efficiency can be greatly improved. Compared with a method of installing or exchanging one discharge electrode or one dust collection electrode, the method using the discharge electrode / dust collection electrode unit can reduce work mistakes of workers. Furthermore, also in the management of materials, the method using the discharge electrode / dust collection electrode unit has an effect that it is easier to manage than the method of managing a single discharge electrode and dust collection electrode unit.

Moreover, in the electric dust collector used for the cremation system of the present invention, the insulator chamber installed at the upper part of the electric dust collector main body and provided with the insulator for supporting the discharge electrode therein stores all the insulators in one insulator chamber. Therefore, when an operator performs inspection and maintenance of each insulator, it is not necessary for the operator to go around each insulator room in order as in the past, and to perform inspection and maintenance. Since inspection and maintenance can be performed, work efficiency can be greatly improved.

As explained above, the electrostatic precipitator mounted on the cremation system of the present invention has both a downsizing, inspection, and maintainability compared to conventional electric precipitators, and is a futuristic city with a relatively small site area. It is particularly excellent as a type cremation system. That is, in order to operate the cremation system stably for a long period of time, daily inspection and maintenance are important, but the cremation system equipped with the electric dust collector according to the present invention is excellent in this inspection and maintenance, and efficiently. Since it can be performed, it is possible to carry out operation of a stable cremation system for a long time.

It is a lineblock diagram of a cremation system concerning an embodiment of the invention. It is a perspective view explaining the assembly process of the electrostatic precipitator by embodiment of this invention. It is a top view of the electrostatic precipitator by embodiment of this invention. It is side surface sectional drawing of the electrostatic precipitator by this invention. It is side surface sectional drawing of the electrostatic precipitator by this invention. It is side surface sectional drawing of the hammering apparatus by this invention. It is side surface sectional drawing of the discharge electrode striking device by this invention. It is side surface sectional drawing of the dust collecting pole striker by this invention. FIG. 9A is an explanatory diagram for explaining the arrangement angle of the discharge electrode striking cam, and FIG. 9B is an explanatory diagram for explaining the arrangement angle of the dust collecting pole striking cam. It is a block diagram of the waste gas processing apparatus by a prior art. It is a perspective view of the electric dust collector by a prior art. It is explanatory drawing of the electric dust collector by a prior art.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

[overall structure]
FIG. 1 is a configuration diagram of a cremation system according to an embodiment of the present invention, and a main combustion for burning a body, a subsidiary funeral, a firewood, etc. using a farewell 16 on which a firewood 17 is placed and a main fire burner 12. A furnace 11, a reburning furnace 13 for completely burning the exhaust gas from the main combustion furnace 11, and an automatic feeder 15 that enables the flame 17 to be automatically delivered to the main combustion furnace 12 are provided.

Further, the exhaust gas from the main furnace 11 is guided to the power generation system 19 through the common flue 18A and the exhaust duct 18B communicating with the reburner 13. Exhaust gas guided to the power generation system 19 exchanges heat with the refrigerant to transmit heat energy, and further flows into the hot air recovery heat exchanger 110. The inflowing exhaust gas exchanges heat with air, and the heated hot air is guided to the main furnace 11 through the hot air recovery path 116.

The exhaust gas flowing out from the hot air recovery heat exchanger 110 flows into the dust collector 112 together with the outside air taken in from the intake port 111 in order to lower the temperature of the exhaust gas, and dust and the like contained in the exhaust gas are removed here. The exhaust gas flowing out from the dust collector 112 is sent to the catalyst device 113, and after nitrogen oxides, odor components, dioxins and the like contained in the exhaust gas are removed, the exhaust gas is sucked by the exhaust fan 114 and introduced into the atmosphere through the exhaust cylinder 115. Discharged.

In this way, the cremation system according to the present invention removes a large amount of dust, nitrogen oxides, odor components, dioxins and other harmful substances generated in the main furnace 11 and regenerates them into clean air to reduce them to the atmosphere. In addition, a pollution-free cremation system, which is an important issue for urban cremation systems, has been realized.

[Electric dust collector assembly process]
Next, an outline of the assembly process of the electric dust collector according to the present invention will be described with reference to FIG. After installing the inlet hopper 22A, the central hopper 22B, and the outlet hopper 22C on the gantry 21 in FIG. 2 (a), the baffle so as to guide the exhaust gas to the discharge electrode / dust collecting electrode unit 26 side in FIG. 2 (b). A plate (not shown) is installed between the hopper and the discharge electrode / dust collection electrode unit 26, and the side plate 23, the support material 24 supporting the plate 23 and the upper beam 25 are installed. Next, in FIG. 2 (c) and FIG. 2 (d), using a crane or the like from the ceiling portion of the electrostatic precipitator, the discharge electrode / dust collection electrode unit 26 is sequentially carried into the electrostatic precipitator. The unit 26 is installed at a predetermined position.

Subsequently, in FIG. 2 (e), the discharge electrode suspension bolt 28 for suspending the discharge electrode from the insulator chamber 29 is installed, and the insulator chamber unit 291 constituting the wall of the insulator chamber 29 is installed on the ceiling portion of the dust collector.

Next, in FIG. 2 (f), the discharge electrode striking device 210 and the dust collecting pole striking device 211 are attached, and the discharge electrode and the discharge electrode support beam are connected to a pipe or an L-shape as a measure for preventing the discharge electrode from swinging. Fix with bolts and nuts using a mold member. On the other hand, anti-swaying measures are taken for the dust collecting electrodes by fixing a steady plate attached to each dust collecting electrode.

Thereafter, in FIG. 2G, the roof 212 of the insulator chamber, the inlet cone 213 constituting the exhaust gas inlet of the electrostatic precipitator, and the outlet cone (on the opposite side of the inlet cone 213 constituting the exhaust gas outlet) (Not shown) etc. are installed to complete the electric dust collector. In the above embodiment, the case where three units of the discharge electrode / dust collection electrode unit 26 are provided is illustrated, but any number of units such as two units may be used. Further, in FIG. 2 (c), it has been described that the discharge electrode / dust collection electrode unit 26 is sequentially carried into the electrostatic dust collection device using a crane or the like from the ceiling portion of the electrostatic dust collection device. When a deterioration or failure occurs, the discharge electrode / dust collection electrode unit 26 that has deteriorated or failed is carried out from the ceiling part of the electrostatic precipitator in the reverse procedure of loading, and an alternative discharge electrode / dust collection electrode unit 26 is installed. You may make it carry in from the ceiling part of an electric dust collector.

As described above, in the electric dust collector according to the present invention, the insulator chamber 29 is made into one room by the insulator chamber unit 291. For this reason, it is possible to perform inspection and maintenance without leaving the room with respect to the insulators and discharge electrode suspension bolts 28 installed in this room. For this reason, the inspection and maintenance of the insulator and the discharge electrode suspension bolt 28 can be performed efficiently.

[Basic configuration of electric dust collector]
Next, the basic configuration of the electrostatic precipitator according to the present invention will be described with reference to FIGS. FIG. 3 is a plan view of the electric dust collector according to the present invention. The exhaust gas flows from the inlet cone 213, passes through the discharge electrode / dust

collection electrode units

33A and 33B from the right to the left, and passes through the striking device 34. It is discharged through the outlet cone 214 and flows into the catalyst device 113 shown in FIG.

The electric dust collector shown in FIG. 3 is composed of two discharge electrode / dust

collection electrode units

33A and 33B, and each unit is configured by alternately arranging discharge electrodes 31 and dust collection electrodes 32 in parallel. The dust in the exhaust gas is charged by corona discharge generated between the discharge electrode 31 and the dust collecting electrode 32, and these dusts are collected by the dust collecting electrode 32 by the action of the electrostatic field.

The striking device 34 is a device that removes the dust lump adhering to the discharge electrode 31 and the dust collecting electrode 32 by mechanical impact, and the dust released from the discharge electrode 31 and the dust collecting electrode 32 under impact by the striking device 34. The lump freely falls by its own weight toward the

hoppers

22A, 22B, 22C shown in FIG. 2A, and is further discharged out of the electric dust collector by a screw conveyor (not shown). The camshaft 35 constituting the striking device 34 is rotationally driven by a motor to rotate a plurality of striking cams attached to the camshaft 35. When the striking hammer that has come into contact with the striking cam reaches a predetermined angle, the striking cam and the striking hammer are released from contact, and the striking hammer falls freely around the pin, so that the striking hammer is almost vertical. When reaching the downward direction, the hammer head side surface of the hammering hammer strikes the striking surface, so that the dust collecting electrode or discharge electrode is impacted, and the dust mass adhering to these electrodes is released.

Reference numeral 36 denotes a purge fan that takes in the outside air and supplies the outside air to the heater 37. The heater 37 warms the supplied outside air and supplies it to the insulator chamber 29, whereby the insulator chamber 29 shown in FIGS. In addition to preventing condensation of the installed insulator, the pressure in the insulator chamber 29 is increased so that dust does not enter the insulator chamber 29 so that dust does not adhere to the insulator.

Next, the configuration of the electric dust collector according to the present invention will be described with reference to FIG. 4 showing a side sectional view of the electric dust collector according to the present invention as seen from the front side of FIG. The exhaust gas flowing in from the inlet cone 213 has the dust in the exhaust gas removed by the discharge electrode / dust collecting electrode unit 26, and further passes through the discharge electrode striking device 34 </ b> A and the dust collecting electrode striking device 34 </ b> B. Discharged. When the daily cremation work is completed, the discharge electrode striking device 34A and the dust collecting electrode striking device 34B are driven to release the dust particles attached to the discharge electrode 31 and the dust collecting electrode 32, respectively. It falls toward the

hoppers

22A, 22B, 22C, and is further discharged out of the electric dust collector by a screw conveyor.

Further, discharge

electrode suspension bolts

42A and 42B to which a high voltage is applied from a high voltage generator (not shown) are insulated by

insulators

43A and 43B, respectively, and connected to discharge

electrode suspension beams

27A and 27B. The discharge

electrode suspension beams

27A and 27B support and fix the discharge electrode 31 constituting the discharge electrode / dust collection electrode unit 26, and discharge the high voltage from the high voltage generator to the discharge

electrode suspension bolts

42A and 42B → discharge electrode suspension. A current path through which current flows in the order of the

beams

27A and 27B → the discharge electrodes 31 is formed.

Next, the striking device constituting the electric dust collector of the present invention will be described in more detail with reference to FIG. FIG. 5 is a side sectional view of the electrostatic precipitator according to the present invention, and 27 is the discharge electrode suspension beam 27A (27B) described in FIG. 4 and is suspended from the discharge

electrode suspension bolts

42A and 42B. The dust collector includes a discharge electrode striking device 34A and a dust collecting pole striking device 34B. The discharge electrode striking device 34A includes a camshaft 35A and a plurality of discharge electrode striking cams 51A connected thereto. And the discharge belt strike hammer 52A. When the motor 53 rotates, the chain belt 54 rotates, and the camshaft 35A and the discharge electrode strike cam 51A connected to the camshaft 35A rotate together. To do. In addition, the dust mass released from the discharge electrode 31 upon receiving an impact by the discharge electrode hammering hammer 52A falls downward toward the

hoppers

22A, 22B, 22C and is discharged out of the electric dust collector by the screw conveyor 55. Although the configuration of the discharge electrode striking device 34A has been described above, the basic configuration of the dust collecting electrode striking device 34B is the same, and thus the description thereof is omitted.

Next, with reference to FIGS. 6 to 9, the striking device constituting the electrostatic precipitator according to the present invention will be described in detail. FIG. 6 is an enlarged view of the discharge electrode striking device 34A and the dust collecting striking device 34B shown in FIG. In FIG. 6, the same components as those in FIG. 5 are denoted by the same reference numerals, and the same description as in FIG. In the present specification, the circled numbers on the drawings are described as <1>, <2>, <3>, etc. for convenience. In the discharge electrode striking device 34A, <1> to <14> represent the positions of the discharge electrode striking cam 51A in the horizontal direction from the right end to the left end, and the discharge electrode struts at the positions <1> to <14>. The striking cam 51A rotates around the camshaft 35A.

More specifically, referring to FIG. 7 and FIG. 9A, in FIG. 7, a plurality of 51A are fixed to the camshaft 35A, and the discharge electrode rotates around the radius R2 with the camshaft 35A as a rotation axis. The striking cam 73A constitutes a discharge electrode striking hammer 52A, a discharge electrode striking arm that contacts the discharge electrode striking cam 51A within a predetermined angle range and rotates around the

72, and 73B is a discharge electrode striking hammer. A

hammer head portion

52A, 74 is a striking rod having a striking surface 71 with which the hammer head portion 73B collides, and 75 is a striking plate connected to a frame that supports the discharge electrode 31.

Next, the operation of the discharge electrode striking device 34A will be described. When the camshaft 35A and the discharge electrode striking cam 51A rotate counterclockwise, the discharge electrode striking cam 51A centers the discharge electrode striking arm 73A around the pin 72. As above, it is pressed upward from below so as to rotate in the clockwise direction. When the discharge electrode striking cam 51A rotates counterclockwise and the hammer head portion 73B reaches an angle θ1 with respect to the vertical direction, the discharge electrode striking arm 73A contacts the discharge electrode striking cam 51A. The state is released, and the hammer head portion 73B falls downward on an arc having a radius R1 about the pin 72 as a rotation axis by its own weight, and collides with the strike surface 71. The impact force due to this collision is applied to the striking rod 74 and the striking plate 75 and further transmitted to the frame that supports the discharge electrode 31. Thereby, the dust mass adhering to the discharge electrode 31 is released.

Also, <1> to <14> in FIG. 9A show the <2> to <14> when the discharge electrode striking cam 51A at the position <1> (right end) is vertically downward. 9 represents the angle of the discharge electrode striking cam 51A at the position, and as is clear from FIG. 9 (a), each discharge rod so that each hammer head portion 73B does not strike the striking surface 71 and the striking rod 74 at the same time. The position of the hit cam 51A is devised. That is, each discharge electrode striking cam 51A exists at a position of a multiple angle of 25.71 ° obtained by dividing 360 ° into 14 equal parts. In addition, with the exception of the positions <7> and <8>, the arrangement is such that adjacent hammer head portions 73B do not strike continuously. With these devices, the impact force generated when the hammer head portion 73B collides with the striking surface 71 is dispersed in space and time, so that the durability of the camshaft 35A can be improved.

Next, the dust collecting striker 34B will be described with reference to FIGS. 6, 8 and 9B. 51B is formed by being fixed to a plurality of camshafts 35B, and a dust collecting electrode striking cam rotating at a radius R2 with the camshaft 35B as a rotation axis. 83A constitutes a dust collecting electrode striking hammer 52B. A dust collecting pole striking arm that contacts the cam 51B within a predetermined angle range and rotates around the pin 82; 83B, a hammer head portion of the dust collecting striking hammer 52B; 81, a hammer head portion connected to the dust collecting electrode 32; 83B is a hitting rod that collides.

Here, the length between the hammer head portion 83B and the pin 82 is longer than the length between the hammer head portion 73B and the pin 72 shown in FIG. This is because the amount of dust mass adhering to the dust collecting electrode 32 is overwhelmingly larger than the amount of dust mass adhering to the discharge electrode 31, so that the impact force applied to the dust collection electrode 32 is applied to the discharge electrode 31. This is to make it larger.

Next, the operation of the dust collecting electrode striking device 34B will be described. When the camshaft 35B and the dust collecting electrode striking cam 51B are rotated counterclockwise, the cam 51B causes the dust collecting electrode striking arm 83A to be centered on the pin 82. As above, it is pressed upward from below so as to rotate in the clockwise direction. When the dust collecting pole striking cam 51B continues to rotate counterclockwise and the hammer head portion 83B reaches an angle θ1 with respect to the vertical direction, the dust collecting pole striking arm 83A is moved to the dust collecting pole striking cam. The hammer head portion 83B is released from the abutting state with the pin 51 as a rotation axis and falls downward on an arc having a radius R1 ′ (R1 <R1 ′) by its own weight. collide. The impact force due to this collision is transmitted to the striking rod 81 and the frame that supports the dust collecting electrode 32 and the dust collecting electrode 32. Thereby, the dust mass adhering to the dust collection electrode 32 is released.

Further, in <1> to <16> of FIG. 9B, the dust collecting pole striking cam 51B at the position (right end) of <1> is 350 ° counterclockwise from the vertical direction (10 ° clockwise). Or the angle of the dust collecting electrode striking cam 51B at each of the positions <2> to <16> when the dust collecting electrode striking cam 51B at the position <9> is 180 ° from the vertical direction. As is apparent from FIG. 9B, the positions of the dust collecting pole strike cams 51B are devised so that the hammer head portions 83B do not strike the strike rod 81 at the same time. That is, each dust collecting pole striking cam 51B exists at a position of a multiple angle of 17 ° which is obtained by dividing 255 ° into 15 equal parts. Further, the arrangement is such that adjacent hammer head portions 83B do not continuously strike. With these devices, the impact force generated when the hammer head portion 83B collides with the striking rod 81 is dispersed in space and time, so that the durability of the camshaft 35B can be improved.

Further, as is clear from FIG. 9B, a maintenance setting region (78) in which the dust collecting pole striking cam 51B is not disposed between <2> at the 95 ° position and <1> at the 350 ° position. 71 ° range between ° and 7 °). That is, the adjacent position below the position <2> is 95 ° −17 ° = 78 °, and the adjacent position on the right side of <1> is 350 ° + 17 ° −360 ° = 7 °. The angle range is 78 ° −7 ° = 71 °. Now, in FIG. 9B, when the camshaft 35B is rotationally controlled to the maintenance setting region, all the dust collecting pole striking cams 51B of <1> to <16> do not come into contact with the dust collecting pole striking arm 83A. For this reason, all the hammer head parts 83B are hung in the vertical downward method by their own weight. That is, when the worker inspects and maintains the hammering device, the camshaft 35B is rotationally controlled so that all the dust collecting pole strike cams 51B do not come into contact with the dust collecting pole strike arm 83A. When the hammering device is set to the maintenance mode, the hammer head portion 83B does not jump out to the worker side (the front side of the paper surface in FIG. 6), so that a large working space for the worker can be secured. For this reason, inspection and maintenance of the hammering device can be performed efficiently. In the above description, the maintenance setting region has been described as a range of 71 ° between 78 ° and 7 °. However, this range can be changed depending on the number of striking cams provided on the camshaft.

In urban cremation systems, a small electric dust collector is indispensable, which makes it difficult to secure a working space for workers. In the electrostatic precipitator according to the present invention, it is possible to secure a work space for workers to work efficiently by focusing on this point and reducing the size of the electrostatic precipitator and setting the electrostatic precipitator to the maintenance mode. It is. As a method for setting the electric dust collector to the maintenance mode, when the operator designates the maintenance mode, automatic control is performed by the motor so that the camshaft 35B has an angle for the maintenance mode. That is, a sensor for detecting the angle of the camshaft 35B is provided, and rotation control is performed so that the position <1> is 350 ° as an example, or the position <9> is 180 ° as an example. As is clear from FIGS. 6 and 9A, the discharge striking device 34A does not incorporate the maintenance mechanism described above. This is because the discharge electrode striking device 34A is at a high position, so that the discharge electrode striking hammer 52A constituting the discharge electrode striking device 34A does not hinder the work even if it jumps out toward the worker side. However, when the maintenance mode is set in the same manner as the dust collecting pole striking device 34B, the hammer head portion 73B is prevented from jumping out to the worker side, so that the worker's work space is widened. Also good.

When the daily cremation work is completed, the discharge electrode striking device 34A and the dust collecting electrode striking device 34B are driven to release the dust particles attached to the discharge electrode 31 and the dust collecting electrode 32, respectively. It falls toward the

hoppers

DESCRIPTION OF SYMBOLS 11 Main combustion furnace 12 Main combustion burner 13 Recombustion furnace 14 Front chamber 15 Automatic feeder 16 Farewell board 17 棺 18A Common flue 18B Exhaust duct 18C Exhaust gas auxiliary cooling device and emergency exhaust duct 19 Power generation system 110 Hot air recovery heat exchanger 111 Intake port 2 Dust collector 3 Catalytic device 114 Air exhaust device 115 Exhaust tube 116 Hot air recovery path 21 Mounting base 22A, 22B, 22C Hopper 23 Side plate 24 Support material 25 Upper beam 26, 33A, 33B Discharge electrode / dust collection electrode unit 27, 27A, 27B Discharge electrode suspension beam 28 Discharge electrode suspension bolt 29 Insulator chamber 291 Insulator chamber unit 210 Discharge electrode striking device 211 Dust collector striking device 212 Insulator chamber roof 213 Inlet cone 214 Exit cone 31 Discharge electrode 32 Dust collector electrode 34 Strike device 34A Discharge electrode striking device 34B Dust collecting electrode striking device 36 Purge fan 37 Heater 35, 35A, 35B Camshaft 41 Discharge electrode frames 42A, 42B Discharge electrode suspension bolts 43A, 43B Insulator 51A Discharge electrode striking cam 51B Dust collecting electrode striking cam 52A Discharge electrode striking hammer 52B Dust collecting striking hammer 53 Motor 54 Chain Belt 55 Screw conveyor 71 Strike surface 72, 82 Pin 73A Discharge electrode strike arm 73B, 83B Hammer head part 74, 81 Strike rod 75 Strike plate 83A Dust collecting pole strike arm

Claims

A combustion furnace for burning the body,
A cremation system provided with an electric dust collector for collecting dust from exhaust gas from the combustion furnace,
The electric dust collector includes a plurality of striking cams provided at predetermined positions in a longitudinal direction of a camshaft configured to be rotatable,
A plurality of striking hammers that form a pair with the striking cam that is pressed by the striking cam in a predetermined angle range and rotates in one direction, and that rotates outside the angular range in a direction opposite to the one direction due to its own weight; ,
A striking transmission means that impacts when the striking hammer collides,
A striking device comprising a discharge electrode or a dust collecting electrode from which dust particles attached by impact force from the striking transmission means are released;
When the electrostatic precipitator is set in a maintenance mode, the rotation of the camshaft is controlled so that the plurality of striking cams and the plurality of striking hammers that do not make any contact with each other. Cremation system to do.
The cremation system according to claim 1, wherein when the maintenance mode is set, all of the hammer heads constituting the hammer are suspended vertically by their own weight.
The discharge device striking device for releasing the dust lump attached to the discharge electrode,
A dust collecting electrode striking device for releasing a dust lump attached to the dust collecting electrode,
The discharge electrode striking device is disposed above the dust collecting electrode striking device,
When the maintenance mode is set, rotation control of the camshaft is performed so that the plurality of striking cams and the plurality of striking hammers constituting the dust collecting pole striking device do not come into contact with each other. The cremation system according to claim 1, wherein rotation control of the camshaft is not performed with respect to the discharge electrode striking device.
A striking cam arrangement angle range in which the striking cam is disposed at an equal angle to the camshaft, and a striking cam not disposed on the camshaft, adjacent to the striking cam arrangement angle range. An angle range, and one end of a boundary between the striking cam arrangement angle range and the striking cam non-arrangement angle range substantially exists vertically downward from a central axis of the camshaft. The cremation system according to claim 1 to claim 3.
The striking cam rotating in a first rotation direction around a first rotation axis;
A striking arm that abuts within a predetermined rotation angle range of the striking cam and rotates in the first rotational direction around the second rotation axis while abutting, and forms an obtuse angle with the striking arm. A hammer arm having a hammer head provided with a hammer head at the tip, and a striking hammer,
When the striking cam exceeds the predetermined rotation angle range, the contact state between the striking cam and the striking arm is released, and the hammer arm and the hammer head are opposite to the first rotational direction. The cremation system according to claim 1, wherein the cremation system is dropped and rotated by its own weight in the second rotation direction.
The hammer arm is a discharge electrode striking hammer arm constituting the discharge electrode striking device;
A dust collecting hammering hammer arm constituting the dust collecting hammering device,
6. The cremation system according to claim 5, wherein a length of the dust collecting hammering hammer arm is longer than a length of the discharge electrode hammering arm.
The cremation system according to any one of claims 1 to 6, wherein the discharge electrode and the dust collection electrode form a pair, and the discharge electrode / dust collection electrode unit includes a plurality of pairs.
In order to suspend the discharge electrode and insulate discharge electrode suspension bolts for supplying a high voltage, a plurality of insulators provided on the upper portion of the electric dust collector main body,
The insulator and an insulator chamber for storing a part of the discharge electrode suspension bolt;
8. The cremation system according to claim 1, wherein the insulator chamber accommodates a part of the discharge electrode suspension bolt and all of the insulator in one chamber.