JP4134801B2 - Opening and closing structure of water sealing lid and collecting valve - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for controlling opening and closing of a water sealing lid and a collecting valve provided in a rising pipe of a coke oven.
[0002]
[Prior art]
Conventionally, in a chamber furnace type coke oven, coke oven gas (COG) generated from coal is sent to a gas purification step and recovered and used as fuel gas. FIG. 9 shows a cross section of an example of such a chamber furnace type coke oven. In the chamber-type coke oven 1 shown in FIG. 9, the carbonization chamber 10 is connected to a gas collection main (hereinafter referred to as a dry main 16) via an ascending pipe 12 and a vent pipe 14. A water sealing lid 18 is provided at the upper end of the ascending pipe 12 so that the ascending pipe 12 can be opened and closed. A collecting valve 17 is provided at the tip of the vent pipe 14 so that the vent pipe 14 can be opened and closed.
[0003]
The coal C charged in the carbonization chamber 10 is subjected to dry distillation, and COG generated from the coal C is sent to the dry main 16 through the ascending pipe 12 and the vent pipe 14, and then sent to the gas purification process. During this carbonization, the water sealing lid 18 is closed and the collecting valve 17 is opened.
At the end of dry distillation of coal C in the carbonization chamber 10, the collecting valve 17 is closed and the water sealing lid 18 is opened, so that COG having a high hydrogen concentration is burned and released from the water sealing lid 18 without being sent to the dry main 16. .
[0004]
When the carbonized coal C is discharged from the carbonization chamber 10 after coking is completed, and the coal C is newly charged into the carbonization chamber 10, the water sealing lid 18 is opened and the collecting valve 17 is closed. Prevents outside air from entering. Then, the furnace cover 11 is removed and the coking coal C is discharged to the outside of the carbonization chamber 10, new coal C is charged into the carbonization chamber 10, and the furnace cover 11 is attached to the furnace body again.
[0005]
Since the number of carbonization chambers 10 provided in the chamber-type coke oven 1 exceeds several tens, and each carbonization chamber 10 has a rising pipe 12, the number of water sealing lids 18 and collecting valves 17 to be opened and closed is also carbonized. There are as many as chambers 10. For this reason, the number of operations for opening and closing the water sealing lid 18 and the collecting valve 17 per day is very large.
The opening / closing operation of the water sealing lid 18 and the opening / closing operation of the collecting valve 17 are often performed manually, and there are problems such as high heat and heavy muscle work in terms of work environment and work content.
[0006]
In order to solve this problem, a method of providing a drive mechanism for the water sealing lid and the collecting valve and automatically operating the drive mechanism has been considered. As an example of such a method, a traversing cart is provided in a charging vehicle that runs on a chamber-type coke oven, and a water-sealing lid opening mechanism that opens the water-sealing lid on the traversing cart, a water-sealing that closes the water-sealing lid. A lid closing mechanism, a collecting valve opening / closing mechanism that opens and closes the collecting valve, an advancing end detection mechanism for the traversing movement of the traversing carriage, and an ignition mechanism that ignites the gas flowing out of the rising pipe are provided, respectively. Some automatically perform opening and closing operations (see, for example, Patent Document 1).
[0007]
[Patent Document 1]
JP-A-5-32975
[0008]
[Problems to be solved by the invention]
However, when a water seal lid and a collecting valve are provided with a drive mechanism to automatically perform opening and closing operations, it is necessary to provide a drive mechanism for each water seal lid and each collecting valve, and one chamber furnace type coke oven Therefore, the number of drive mechanisms required for this becomes very large, and the equipment cost becomes expensive.
[0009]
In addition, the drive mechanism is installed around the riser pipe, but because the radiant heat from the riser pipe skin is large, the packing, etc. that form the drive mechanism is likely to be damaged and the oil content is deteriorated. Prone to malfunction. For this reason, the load required for the maintenance of the drive mechanism is increased.
Furthermore, the space around the riser pipe where the drive mechanism is installed is limited, the structure around the riser pipe becomes complicated and complicated, and the restriction on carrying out the maintenance work of the drive mechanism becomes large.
[0010]
In particular, a transverse carriage is provided in the charging car on the chamber type coke oven, and a water seal lid opening mechanism, a water seal lid closing mechanism, a collecting valve opening / closing mechanism, a forward end detection mechanism, and an ignition mechanism are provided on the transverse carriage. In the installation method, the structure of each mechanism on the traversing cart is complicated, and the traversing cart runs around the riser, so the configuration around the riser is also complicated, and the operation management of the traversing cart is complicated. Become.
[0011]
The present invention has been made in order to solve the above-described problems of the prior art, and the object of the present invention is to eliminate the complexity of the structure around the riser and to reduce the load required for maintenance. It is an object to provide a water sealing lid and a collecting valve opening / closing structure capable of reducing the equipment cost.
[0012]
[Means for Solving the Problems]
The present invention adopts the following configuration in order to solve the problem. The opening and closing structure of the water sealing lid and the collecting valve according to the first aspect of the present invention includes a water sealing lid provided in the rising pipe of the chamber furnace type coke oven and a collecting valve provided in the vent pipe connected to the rising pipe. A structure for controlling opening and closing, comprising a cam device, a first link device, a second link device, and a drive device, wherein the cam device is configured to be rotatable by the drive device, and the rotation A first cam and a second cam configured to be rotatable around an axis, wherein the first link device includes a first link shaft having a protrusion, the first link; One end of the shaft is connected directly or indirectly to the water sealing lid, and the other end is formed with a hole continuous in the axial direction of the link shaft, and the rotating shaft is connected to the link in the hole. Inserted so that it can move in the axial direction of the shaft and can freely rotate. The second link device includes a second link shaft having a protrusion, and one end of the second link shaft is directly or indirectly connected to the collecting valve, and the other end is connected to the second link shaft. A hole continuous in the axial direction of the link shaft is formed, and the rotation shaft is inserted into the hole so as to be movable and freely rotatable in the axial direction of the link shaft. The first guide shaft has a first guide path with which the projection of the first link shaft engages, and the first guide path has a first small path that forms a circular arc concentric with the rotating shaft, and a shape deviated from the circular arc. And the second cam has a second guide path with which the projection of the second link shaft engages, and the second guide path is the rotating shaft. A third path that forms a concentric arc and a fourth path that forms a shape deviating from the arc are continuous. When the projection of the first link shaft is located in the second path and the water sealing lid is opening and closing, the projection of the second link shaft is positioned in the third path. The collecting valve remains closed, and when the projection of the second link shaft is located in the fourth path and the collecting valve is opening and closing, The projection of one link shaft is located in the first path, and the water sealing lid remains closed.
[0013]
According to the first aspect of the present invention, the first cam and the second cam rotate together with the rotation of the rotation shaft, and the protrusion of the first link shaft is guided in the first guide path and relatively moved. Then, the projection of the second link shaft is guided and relatively moved in the second guide path of the cam.
When the protrusion of the first link shaft relatively moves in the first path, the distance between the protrusion and the rotating shaft does not change, and the rotating shaft only rotates within the hole of the first link shaft. The first link shaft does not move, and the water sealing lid connected to the first link shaft does not move and remains closed.
[0014]
When the protrusion of the first link shaft relatively moves in the second path, the distance between the protrusion and the rotation shaft changes. When the distance between the protrusion and the rotation shaft changes, the rotation shaft relatively moves in the axial direction of the first link shaft while rotating in the hole of the first link shaft, the first link shaft moves, The opening and closing operation of the water sealing lid connected to the one link shaft is performed.
When the protrusion of the second link shaft relatively moves in the third path, the distance between the protrusion and the rotation shaft does not change, and the rotation shaft only rotates within the hole of the second link shaft. The second link shaft does not move, and the collecting valve connected to the second link shaft does not move and remains closed.
[0015]
When the protrusion of the second link shaft relatively moves in the fourth path, the distance between the protrusion and the rotation shaft changes. When the distance between the protrusion and the rotation shaft changes, the rotation shaft relatively moves in the axial direction of the second link shaft while rotating in the hole of the second link shaft, the second link shaft moves, The opening and closing operation of the collecting valve connected to the second link shaft is performed.
Further, when one of the water sealing lid and the collecting valve is performing the opening / closing operation, the other is kept closed, and the water sealing lid and the collecting valve are not simultaneously opened / closed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
First, the configuration of the present embodiment will be described with reference to FIGS.
As shown in FIGS. 1 and 2, a water sealing lid 18 that enables opening and closing of the rising pipe 12 is provided at the upper end of the rising pipe 12 through which COG generated during carbonization in the carbonization chamber of the chamber-type coke oven flows. Is provided.
[0017]
A distal end 21 a of an opening / closing arm 20 a for opening and closing the water sealing lid 18 is fixedly attached to the outer center of the water sealing lid 18. The opening / closing arm 20a rotates about an intermediate portion 22a pin-connected to the tip of a bracket 55 installed on the flange 13 of the rising pipe 12, and when the opening / closing arm 20a rotates clockwise in FIG. 1, the opening / closing arm 20a. When the opening / closing arm 20a pivots counterclockwise, the tip 21a of the opening / closing arm 20a pushes the water sealing lid 18 downward to close it. In the following description, clockwise and counterclockwise refer to clockwise and counterclockwise in FIG.
[0018]
As shown in FIGS. 1 and 3, the rear end 23a of the opening / closing arm 20a is pin-connected to the tip 28a of the link arm 27a, and the rotating force can be transmitted to the opening / closing arm 20a from the tip 28a of the link arm 27a. It is configured. Further, the rear end 29a of the link arm 27a is pin-connected to a front end 32a of a first link shaft 31a, which will be described later, so that the rear end 29a of the link arm 27a can be pushed and pulled by the front end 32a of the first link shaft 31a. It is configured. The first link shaft 31a, the link arm 27a, and the opening / closing arm 20a constitute a first link device 36a.
[0019]
As shown in FIGS. 1 and 2, the vent pipe 14 extends laterally from the side surface of the ascending pipe 12, and the vent pipe 14 is bent downward halfway to reach the dry main 16. A collecting valve 17 that can open and close the vent pipe 14 is provided at a connection portion between the tip of the vent pipe 14 and the dry main 16.
The collecting valve 17 is fixed to the flange 15 at the tip of the vent pipe 14 by a shaft 40. The end 21b of the opening / closing arm 20b is fixed to one end of the shaft 40, and the opening / closing arm 20b and the collecting valve 17 can be rotated together around the shaft 40. When the chucking valve 17 is opened and rotated counterclockwise, the collecting valve 17 is closed.
[0020]
As shown in FIGS. 1 and 4, the rear end 23b of the opening / closing arm 20b is pin-connected to the tip 28b of the link arm 27b, and the rotating force can be transmitted to the opening / closing arm 20b from the tip 28b of the link arm 27b. It is configured. Further, the rear end 29b of the link arm 27b is pin-connected to a distal end 32b of a second link shaft 31b described later, so that the rear end 29b of the link arm 27b can be pushed and pulled by the distal end 32b of the second link shaft 31b. It is configured. The second link shaft 31b, the link arm 27b, and the opening / closing arm 20b constitute a second link device 36b. FIG. 4 is a view of the second link device 36b as seen from the back side.
[0021]
As shown in FIGS. 1 and 2, a gantry 41 is installed beside the vent pipe 14, and the gantry 41 is fixed to the ascending pipe 12 and the vent pipe 14.
An air-driven actuator 42 is installed on the gantry 41 as a driving device. Driving air is supplied to the actuator 42 from the outside, and a piston (not shown) of the actuator 42 is reciprocated by the driving air so that the shaft 42a rotates. A pulley 43 is attached around the shaft 42 a, and a chain 45 spanning the pulley 43 is configured to be rotatable by the actuator 42.
[0022]
As shown in FIGS. 1, 2, and 6, a cam device 46 is installed beside the actuator 42 on the gantry 41. The cam device 46 includes two cam plates 47 a and 47 b, a rotating shaft 54 and a pulley 44, and the cam plates 47 a and 47 b and a pulley 44 around the rotating shaft 54 rotatably supported on the gantry 41. Is fixed.
[0023]
As shown in FIG. 5, the cam plate 47a has a groove 48a, and the groove 48a forms a first guide path. The groove 48a is formed of a small groove 49a and a small groove 50a each forming an arc on the surface of the cam plate 47a, and one end of the small groove 49a is continuous with one end of the small groove 50a through a continuous point 51a, and the small groove 49a is the first groove 49a. The small groove 50a forms a second small path. The center of curvature of the arc that forms the small groove 49 a coincides with the center of the rotation shaft 54, and the center of curvature of the arc that forms the small groove 50 a is at a position eccentric from the center of the rotation shaft 54. The small groove 50a also increases in distance from the center of the rotating shaft 54 as the distance from the continuous point 51a increases.
[0024]
The cam plate 47b and the cam plate 47a have shapes as shown in FIG. 6, and have a groove 48b corresponding to the groove 48a, and the groove 48b forms a second guide path. The groove 48b is composed of a small groove 49b and a small groove 50b continuous via the continuous point 51b, the small groove 49b corresponding to the small groove 49a forms a third small path, and the small groove 50b corresponding to the small groove 50a forms a fourth small path. There is no.
[0025]
As shown in FIGS. 1 and 2, a chain 45 is hung on the pulley 44 and is connected to the pulley 43 through the chain 45. That is, the cam device 46 is configured to be rotatable around the rotation shaft 54 by the actuator 42.
The rotating shaft 54 is connected to the rear end 33a of the first link shaft 31a and the rear end 33b of the second link shaft 31b. As shown in FIG. 3, a rotation shaft hole 34a is formed at the rear end 33a of the first link shaft 31a. The opening portion of the rotation shaft hole 34a extends continuously in the axial direction of the first link shaft 31a, the rotation shaft 54 is inserted into the rotation shaft hole 34a, and the rotation shaft 54 is inserted into the rotation shaft hole 34a. Is configured to be relatively movable in the axial direction of the first link shaft 31a and rotatable about the axis.
[0026]
A protrusion 35a is formed in the middle of the first link shaft 31a. The protrusion 35a is accommodated and engaged in the groove 48a of the cam plate 47a, and the protrusion 35a is configured to be relatively movable in the groove 48a.
As shown in FIG. 4, the second link shaft 31b has the same configuration as the first link shaft 31a. That is, the rotation shaft hole 34b corresponding to the rotation shaft hole 34a is at the rear end 33b of the second link shaft 31b, the rotation shaft 54 is inserted into the rotation shaft hole 34b, and the rotation shaft 54 is connected to the rotation shaft hole 34b. The inside is relatively movable and rotatable in the axial direction of the second link shaft 31b. Further, a projection 35b formed corresponding to the projection 35a in the middle of the second link shaft 31b is accommodated and engaged in the groove 48b of the cam plate 47b, and the projection 35b is configured to be relatively movable in the groove 48b. ing.
[0027]
As shown in FIG. 1, a bracket 56a and a bracket 56b are installed on the gantry 41, a link shaft guide hole 57a is formed at the tip of the bracket 56a (see FIG. 3), and a link shaft guide is formed at the tip of the bracket 56b. A hole 57b is formed (see FIG. 4). The portion between the tip 32a of the first link shaft 31a and the projection 35a is inserted into the link shaft guide hole 57a, and the portion between the tip 32b of the second link shaft 31b and the projection 35b is the link shaft. It is inserted into the guide hole 57b. The movement of the first link shaft 31a is restricted by the rotation shaft 54 inserted through the link shaft guide hole 57a and the rotation shaft hole 34a, and the first link shaft 31a can move only in the axial direction. Yes. Similarly, the movement of the second link shaft 31b is restricted by the rotation shaft 54 inserted into the link shaft guide hole 57b and the rotation shaft hole 34b, and the second link shaft 31b can move only in the axial direction. It has become.
[0028]
When the rotating shaft 54 rotates, the cam plates 47a and 47b rotate around the rotating shaft 54 together with the rotating shaft 54, and the rotating shaft 54 relatively moves within the rotating shaft hole 34a of the first link shaft 31a. The rotation shaft 54 is relatively moved in the rotation shaft hole 34b of the second link shaft 31b, and the protrusion 35a of the first link shaft 31a is guided and relatively moved in the groove 48a, so that the second link shaft 31b The protrusion 35b is guided and relatively moved in the groove 48b.
[0029]
The position of the protrusion 35a in the groove 48a and the position of the protrusion 35b in the groove 48b have a relative relationship described below. That is, when the protrusion 35a is located in the small groove 49a of the groove 48a, the protrusion 35b is located in the small groove 50b of the groove 48b (see FIG. 7). When the protrusion 35a is positioned in the small groove 50a of the groove 48a, the protrusion 35b is positioned in the small groove 49b of the groove 48b (see FIG. 8). 7 and 8, the pulley 44 of the cam device 46 is not shown.
[0030]
When the projection 35a is located at the continuous point 51a between the small groove 49a and the small groove 50a, the projection 35b is located at the continuous point 51b between the small groove 49b and the small groove 50b (see FIG. 1).
When the protrusion 35a is located in the small groove 49a or at the continuous point 51a, the water seal lid 18 connected to the first link device 36a is in a closed state, and the protrusion 35b is in the small groove 49b or the continuous point 51b. The collecting valve 17 connected to the second link device 36b is in a closed state.
[0031]
This embodiment is configured as described above, and the operation thereof will be described next.
Initially, the projection 35a of the first link shaft 31a is located at the continuous point 51a in the groove 48a, and the water sealing lid 18 is closed. Further, the projection 35b of the second link shaft 31b is located at a continuous point 51b in the groove 48b, and the collecting valve 17 is closed (see FIG. 1).
[0032]
Next, when driving air is supplied to the actuator 42 and the pulley 43 rotates counterclockwise, the chain 45 also rotates counterclockwise, and the chain 45 rotates the pulley 44 and the rotating shaft 54 counterclockwise. Let When the rotating shaft 54 rotates counterclockwise, the cam plates 47a and 47b also rotate around the rotating shaft 54 counterclockwise. When the cam plate 47a rotates counterclockwise, the protrusion 35a of the first link shaft 31a relatively moves in the groove 48a from the continuous point 51a into the small groove 49a. Since the center of curvature of the arc that forms the small groove 49a coincides with the center of the rotation shaft 54, the distance between the protrusion 35a and the center of the rotation shaft 54 does not change constantly, and the rotation shaft 54 is within the rotation shaft hole 34a. Do not change the position. That is, the protrusion 35a relatively moves in the groove 48a, but the first link shaft 31a itself does not move. Therefore, the link arm 27a connected to the first link shaft 31a, the opening / closing arm 20a, and the water sealing lid 18 do not move, and the water sealing lid 18 remains closed (see FIG. 7).
[0033]
When the cam plate 47b rotates counterclockwise, the protrusion 35b of the second link shaft 31b relatively moves in the groove 48b from the continuous point 51b into the small groove 50b. As the distance between the protrusion 35b and the continuous point 51b increases in the small groove 50b, the distance between the protrusion 35b and the center of the rotation shaft 54 also increases. When the distance between the protrusion 35b and the center of the rotation shaft 54 is increased, the rotation shaft 54 is relatively moved in the rotation shaft hole 34b toward the rear end 33b of the second link shaft 31b, and the second link shaft 31b is at its tip. It is pulled in the direction of 32b and moves in the axial direction. When the second link shaft 31b is pulled in the direction of the tip 32b, the tip 32b pushes the rear end 29b of the link arm 27b, and the tip 28b of the link arm 27b further pushes the rear end 23b of the open / close arm 20b. The 20b and the collecting valve 17 together rotate clockwise around the shaft 40, and the collecting valve 17 is opened (see FIGS. 4 and 7).
[0034]
Next, the pulley 43 is rotated clockwise by the actuator 42, and the chain 45, the pulley 44, the rotating shaft 54, and the cam plates 47a and 47b are rotated clockwise.
When the cam plate 47a rotates clockwise, the protrusion 35a of the first link shaft 31a relatively moves in the small groove 49a toward the continuous point 51a. While the projection 35a is located in the small groove 49a, the distance between the projection 35a and the rotation shaft 54 does not change, the first link shaft 31a itself does not move, and the water sealing lid 18 remains closed. Yes.
[0035]
Further, when the cam plate 47b rotates clockwise, the protrusion 35b of the second link shaft 31b relatively moves in the small groove 50b toward the continuous point 51b. As the distance between the protrusion 35b and the continuous point 51b decreases in the small groove 50b, the distance between the protrusion 35b and the center of the rotation shaft 54 also decreases. When the distance between the protrusion 35b and the center of the rotation shaft 54 is reduced, the rotation shaft 54 is relatively moved in the rotation shaft hole 34b toward the front end 32b of the second link shaft 31b, and the second link shaft 31b is rear end 33b. It is pulled in the direction of and moves in the axial direction. When the second link shaft 31b is pulled in the direction of the rear end 33b, the front end 32b of the second link shaft 31b pulls the rear end 29b of the link arm 27b, and the front end 28b of the link arm 27b further moves behind the opening / closing arm 20b. By pulling the end 23b, the open / close arm 20b and the collecting valve 17 rotate together around the shaft 40 counterclockwise, and the collecting valve 17 is closed (see FIGS. 1 and 4).
[0036]
Then, the projection 35a of the first link shaft 31a returns to the continuous point 51a in the groove 48a, and the projection 35b of the second link shaft 31b returns to the continuous point 51b in the groove 48b. Both the chucking valves 17 are closed.
Next, the cam plates 47 a and 47 b are further rotated clockwise by the actuator 42.
[0037]
When the cam plate 47a further rotates clockwise, the protrusion 35a of the first link shaft 31a relatively moves in the groove 48a from the continuous point 51a into the small groove 50a. As the distance between the protrusion 35b and the continuous point 51a increases in the small groove 50a, the distance between the protrusion 35a and the center of the rotating shaft 54 also increases, and the rotating shaft 54 passes through the rotating shaft hole 34a and the first link shaft 31a. The first link shaft 31a is pulled in the direction of the tip 32a and moves in the axial direction relative to the rear end 33a. The leading end 32a of the first link shaft 31a pushes the rear end 29a of the link arm 27a, the leading end 28a of the link arm 27a pushes the rear end 23a of the opening / closing arm 20a, and the opening / closing arm 20a is centered on the intermediate portion 22a. Rotating clockwise, the tip 21a of the opening / closing arm 20a lifts the water seal lid 18 upward, and the water seal lid 18 opens (see FIGS. 3 and 8).
[0038]
When the cam plate 47b further rotates clockwise, the protrusion 35b of the second link shaft 31b relatively moves in the groove 48b from the continuous point 51b into the small groove 49b. While the projection 35b is located in the small groove 49b, the distance between the projection 35b and the rotating shaft 54 does not change, the second link shaft 31b itself does not move, and the collecting valve 17 remains closed. (See FIG. 8).
Next, the actuator 42 rotates the cam plates 47a and 47b counterclockwise.
[0039]
When the cam plate 47a rotates counterclockwise, the projection 35a of the first link shaft 31a relatively moves in the small groove 50a toward the continuous point 51a. As the distance between the protrusion 35a and the continuous point 51a in the small groove 50a decreases, the distance between the protrusion 35a and the center of the rotation shaft 54 also decreases, and the rotation shaft 54 passes through the rotation shaft hole 34a of the first link shaft 31a. The first link shaft 31a is pulled in the direction of the rear end 32a and moved in the axial direction. The distal end 32a of the first link shaft 31a pulls the rear end 29a of the link arm 27a, the distal end 28a of the link arm 27a further pulls the rear end 23a of the opening / closing arm 20a, and the opening / closing arm 20a is centered on the intermediate portion 22a. It rotates counterclockwise, the tip 21a of the opening / closing arm 20a pushes down the water sealing lid 18 and the water sealing lid 18 closes (see FIGS. 1 and 3).
[0040]
When the cam plate 47b rotates counterclockwise, the protrusion 35b of the second link shaft 31b relatively moves in the small groove 49b toward the continuous point 51b. During this time, the distance between the protrusion 35b and the rotating shaft 54 does not change, the second link shaft 31b itself does not move, and the collecting valve 17 remains closed (see FIG. 1).
Then, again, the projection 35a of the first link shaft 31a returns to the continuous point 51a in the groove 48a, and the projection 35b of the second link shaft 31b returns to the continuous point 51b in the groove 48b. And the collecting valve 17 is in a closed state.
[0041]
Therefore, the water sealing lid 18 and the collecting valve 17 are not opened at the same time, and when one of the water sealing lid 18 and the collecting valve 17 is open, the other is closed. That is, when coal is carbonized in the carbonization chamber and the generated COG is sent to the dry main 16 through the ascending pipe 12 and the vent pipe 14, the collecting valve 17 is opened, the water sealing lid 18 is closed, It is possible to prevent the outside air from being mixed and explode, and to prevent COG from leaking to the outside air.
[0042]
Further, at the end of the dry distillation of coal in the carbonization chamber, the collecting valve 17 is closed and the water sealing lid 18 is opened, so that COG having a high hydrogen concentration is burned and released from the water sealing lid 18 without being sent to the dry main 16. be able to.
Further, when discharging coke from the carbonization chamber and charging coal into the carbonization chamber, the collecting valve 17 is closed, and outside air is mixed into the dry main 16 into which COG from the other carbonization chamber flows. Can be prevented. If necessary, the collecting valve 17 and the water sealing lid 18 are both closed, and any carbonization chamber can be isolated from the dry main 16 and the outside air.
[0043]
Further, since the collecting valve 17 and the water sealing lid 18 are opened and closed via the first link device 36a and the second link device 36b, the open / close arms 20a and 20b, the link arms 27a and 27b, and the link shafts 31a and 31b. It is easy to adjust the length of the actuator 42 so that the installation position of the actuator 42 which is a drive device is a position which is not easily affected by the radiant heat from the riser 12.
[0044]
Further, the opening and closing mechanism of the water sealing lid 18 and the collecting valve 17 is a simple one comprising the actuator 42 on the gantry 41, the cam device 46, the first link device 36a and the second link device 36b. The configuration around the riser 12 is also simple. For this reason, it is strong against radiant heat from the riser 12, its reliability is high, the maintenance load is small, and maintenance work is easy to perform. The life of the actuator 42 is extended and the installation cost is also suppressed at a low cost.
[0045]
In the present embodiment, the drive device is configured by the air-driven actuator 42. However, it is of course possible to use a hydraulic drive actuator, and instead of the actuator in which the piston reciprocates, the hydraulic drive Alternatively, an air-driven motor can be used. If the drive device is a motor, the rotating shaft 44 can be easily stopped at an arbitrary position. In addition, the power source of the drive device can be electric power, and the drive device can be explosion-proof.
[0046]
In the present embodiment, the shaft 42a of the actuator 42 that constitutes the driving device and the rotary shaft 54 are connected via the pulleys 43 and 44 and the chain 45. However, the shaft 42a and the rotary shaft 54 are directly connected. And can be connected via a speed reducer or the like.
[0047]
Further, in the present embodiment, when the projection 35a is located at the continuous point 51a, the projection 35b is also located at the continuous point 51b. Instead, the following positional relationship may be employed. is there. That is, when the protrusion 35a is located at the continuous point 51a, the protrusion 35b is in the small groove 49b, and when the protrusion 35b is located at the continuous point 51b, the protrusion 35a is in the small groove 49a. is there. By forming such a positional relationship, after either one of the water sealing lid 18 and the collecting valve 17 is changed from the open state to the closed state, the other is not immediately changed from the closed state to the open state. There will be a time when both 18 and the collecting valve 17 are closed. Thereby, the play which exists in connection parts, such as the 1st link apparatus 36a, the 2nd link apparatus 36b, the cam apparatus 46, the chain 45, can be absorbed, and both the water sealing lid 18 and the collecting valve 17 will be in an open state. This is more reliably prevented.
[0048]
【The invention's effect】
Since the present invention has the water sealing lid and the opening / closing structure of the collecting valve as described above, the structure around the riser pipe is solved and water that can reduce maintenance load and equipment cost can be reduced. There is an effect that it is possible to provide an open / close structure of the sealing lid and the collecting valve.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of an opening / closing structure for a water sealing lid and a collecting valve according to an embodiment of the present invention.
FIG. 2 is a top view of a water sealing lid and a collecting valve opening / closing structure according to an embodiment of the present invention.
FIG. 3 is a front view of the first link device according to the present embodiment.
FIG. 4 is a rear view of a second link device according to the present embodiment.
FIG. 5 is a front view of a cam plate according to the present embodiment.
FIG. 6 is a front view of the cam device according to the present embodiment.
FIG. 7 is an explanatory view showing a state in which a water sealing lid is closed and a collecting valve is opened.
FIG. 8 is an explanatory view showing a state in which the water sealing lid is opened and the collecting valve is closed.
FIG. 9 is a cross-sectional view of a conventional chamber furnace coke oven.
[Explanation of symbols]
One-chamber furnace coke oven
10 Carbonization chamber
11 Furnace
12 riser
13 Rising pipe flange
14 Vent pipe
15 Vent pipe flange
16 Dry Maine
17 Collecting valve
18 Water sealing lid
20a, 20b Open / close arm
21a, 21b Opening / closing arm tip
22a Middle part of the open / close arm
23a, 20b Rear end of open / close arm
27a, 27b Link arm
28a, 28b Link arm tip
29a, 29b Rear end of link arm
31a, 31b Link shaft
32a, 32b Link shaft tip
33a, 33b Rear end of link shaft
34a, 34b Rotating shaft hole of link shaft
35a, 35b Link shaft protrusion
36a, 36b Link device
40 axes
41 frame
42 Actuator
42a shaft
43, 44 pulley
45 chain
46 Cam device
47a, 47b Cam plate
48a, 48b groove
49a, 49b, 50a, 50b Small groove
51a, 51b continuous points
54 Rotating shaft
55, 56a, 56b Bracket
57a, 57b Link shaft guide hole
C Coal C

Claims (1)

A structure for controlling the opening and closing of a water sealing lid provided in a rising pipe of a chamber furnace type coke oven and a collecting valve provided in a vent pipe connected to the rising pipe,
A cam device, a first link device, a second link device and a drive device;
The cam device includes a rotating shaft configured to be rotatable by the drive device, and a first cam and a second cam configured to be rotatable around the rotating shaft,
The first link device includes a first link shaft having a protrusion, one end of the first link shaft is directly or indirectly connected to the water sealing lid, and the other end is the link shaft. A hole that is continuous in the axial direction is formed, and the rotation shaft is inserted into the hole so as to be movable in the axial direction of the link shaft and to be freely rotatable,
The second link device includes a second link shaft having a protrusion, and one end of the second link shaft is directly or indirectly connected to the collecting valve, and the other end is connected to the link shaft. A hole that is continuous in the axial direction is formed, and the rotation shaft is inserted into the hole so as to be movable in the axial direction of the link shaft and to be freely rotatable,
The first cam has a first guide path with which a projection of the first link shaft engages, and the first guide path has a first path that forms an arc concentric with the rotation shaft; A second path that forms a shape deviating from the arc is continuous,
The second cam has a second guide path with which a projection of the second link shaft engages, and the second guide path has a third path that forms an arc concentric with the rotating shaft; The fourth path that forms a shape deviating from the arc is continuous,
When the projection of the first link shaft is located in the second path and the water sealing lid is opening and closing, the projection of the second link shaft is positioned in the third path. The collecting valve remains closed, and when the projection of the second link shaft is located in the fourth path and the collecting valve is opening and closing, An opening / closing structure of a water sealing lid and a collecting valve, wherein a projection of one link shaft is located in the first path and the water sealing lid remains closed.

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