JP2001049259A - Oven cover for coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oven cover for a coke oven which enables performance of quick and precise adjustment even in conducting operations at a high temperature and a high ground after mounting the oven cover in the coke oven. SOLUTION: In the oven cover 10 in which working surfaces 13 are formed parallel at both sides of an oven-fixing frame 12 and which is provided with guide portions 17 and 18 to be guided at the working surfaces 13 of fixed guide plates 15 and 16 having hook portions 14 and 19, respectively, at its lower side and a barring portion 20 which engages the hook portions 14 and 19 of the fixed guide plates 15 and 16 upon closing at its upper side, the respective guide portions 17 and 18 are concluded with a support member fixed in an oven main body 21 by a screw and, in addition, are provided with eccentric cams 38 and 39 to be locked in the concluded state, and the outside end distances of the right and left eccentric cams 38 and 39 are adjustable depending on the positions of the eccentric cams 38 and 39 to be fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coke oven lid to be attached to an oven lid mounting frame of a coke oven for carbonizing coal.

[0002]

2. Description of the Related Art At present, in the coke industry in Japan, environmental purification around a coke oven has become the most important issue, and as a means for purifying the environment, gas generated during coke production is discharged from the coke oven. It was necessary to prevent leakage. The coke oven is provided with a combustion chamber at the lower part and a number of carbonization chambers arranged side by side at the upper part, and transfers heat generated from the combustion chamber to the carbonization chamber to produce coke from coal in the carbonization chamber. Equipment. Each carbonization chamber of the coke oven has a vertically long rectangular parallelepiped shape penetrating the coke oven back and forth, and each ceiling has a coal inlet for charging coal. Furnace lids used during coal carbonization can be attached to the front and rear ends, thereby preventing leakage of coke oven gas.

As shown in FIG. 7, a furnace cover mounting frame 72 is provided at an end of a dry distillation chamber 71 of a coke oven 70. Fixed guide plates 73 and 74 are mounted on the upper and lower sides of the furnace lid mounting frame 72 in parallel with each other. On the upper portions of the fixed guide plates 73 and 74,
U-shaped notches 77 and 78 are provided on the furnace lid 75 and engage with bar members 76 extending left and right. On the other hand, the furnace lid 75 includes a main body 79 that covers the furnace lid mounting frame 72.
And a refractory and heat-insulating portion 80 provided inside the main body portion 79 and fitted into the dry distillation chamber 71; Sealing means 81 and fixed guide plate 7
A bar portion 82 having a bar member 76 engaging with the U-shaped notch portions 77, 78 of
And the guide members 83 and 84 for adjusting the position in the width direction while sliding inside the fixed guide plates 73 and 74 when the furnace lid 75 is mounted.

[0004] The sealing means 81 is configured to press a knife edge 85 provided around the refractory heat insulating portion 80 and brought into contact with the furnace lid mounting frame 72 by a pressing spring 86 provided at a predetermined interval. Therefore, when the furnace lid 75 is mounted on the furnace lid mounting frame 72 in a state of being shifted in the width direction, the tip of the knife edge 85 comes off the sealing surface 87 of the furnace lid mounting frame 72, and this part However, it is necessary to accurately align the center position of the furnace lid 75 in the width direction with respect to the furnace lid mounting frame 72 because this causes gas leakage. The fixed guide plate 73 of the furnace lid mounting frame 72 is aligned with the center position of the furnace lid 75 in the width direction,
Guide members 83 and 84 for insertion between
5 when attached to the left and right guide members 83 and 84
The width L3 between the outer end portions of each of the fixed guide plates 73 and 74 is -5 mm or more with respect to the width L4 at the time of design.
The range was −10 mm. By maintaining this dimension, the center position in the width direction when the furnace lid 75 was attached could be adjusted.

[0005]

However, the above-mentioned furnace lid for the conventional coke oven has the following problems. Since the furnace lid mounting frame 72 receives high heat, it changes over time. Due to the distortion, the width dimension L4 between the left and right fixed guide plates 73 and 74 differs from the dimension at the time of manufacture. Alternatively, a difference also occurs depending on the upper and lower sides of each furnace lid mounting frame 72. In addition, when the distortion of the furnace lid mounting frame 72 reaches the limit or when the sealing surface 87 is damaged by the impact of attaching and detaching the furnace lid 75, the furnace lid mounting frame 72 is replaced. The width dimensions had changed. In addition, the furnace lid 7 may be used for operational reasons.
In some cases, No. 5 was installed in another coke oven. On the other hand, the guide members 83 and 84 used for the conventional furnace lid 75 are:
The structure was directly fixed to the side surface of the main body portion 79 of the furnace lid 75 with bolts 88, and therefore, the dimensions in the width direction could not be adjusted. When the adjustment is performed by force, the adjustment is performed by sandwiching a liner (not shown) between the main body 79 and the guide member 83 (or 84).
After removing the entire 3 (or 84), the liner will be inserted. That is, when it is necessary to adjust the guide members 83 and 84 after attaching the furnace lid 75 to the coke oven 70, the furnace lid 75 is temporarily removed from the coke oven 70 and the guide members 83 and 84 are adjusted. Become. Furnace lid 75
When the adjustment of the guide members 83 and 84 is performed in a state in which the is installed in the coke oven 70, the operation is performed at a high place while receiving high heat, which takes time and does not allow accurate adjustment, which poses a danger. It was practically impossible to accompany it. The present invention has been made in view of the above circumstances, and provides a furnace cover for a coke oven capable of performing quick and accurate adjustment even in high heat and high place work after the furnace cover is mounted on the coke oven. The purpose is to:

[0006]

According to the present invention, there is provided a furnace cover for a coke oven according to the present invention, in which a fixed guide plate having working surfaces formed on both sides of a furnace cover mounting frame and having a hook portion is provided. In the furnace lid having upper and lower guide parts respectively guided on the working surface and a bar part which engages with the hook part of the fixed guide plate when closed, each of the guide parts is attached to the furnace lid body. And an eccentric cam fastened by screws to the support member and locked in the fastened state, and the outer end distance of the left and right eccentric cams can be adjusted by the mounting position of the eccentric cam. I have. As described above, since the eccentric cam whose outer end distance can be adjusted depending on the mounting position is provided, quick and accurate work can be performed even under high heat and high place work. In addition, since the adjustment is performed using the eccentric cam, the adjustment can be performed finely. Here, a mechanism for locking the eccentric cam to the support member in a fastened state is engaged with a first uneven projection radially provided around a screw hole of the eccentric cam and the first uneven projection. The support member may include a second uneven protrusion provided on a contact surface of the eccentric cam. The screw holes include holes through which screws are inserted, in addition to holes in which female screws are formed. With this configuration,
By simply loosening the screw without removing the screw, the eccentric cam can be rotated to adjust the outer end distance, so that the operation can be performed quickly. Further, the axis of the female screw provided on the support member for mounting the eccentric cam can be oriented substantially vertically. With this configuration, it is possible to adjust by turning the screw from above with the furnace lid attached.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. As shown in FIGS. 1 to 3, a furnace cover 10 for a coke oven according to an embodiment of the present invention has working surfaces 13 formed on both sides of a furnace cover mounting frame 12 of a coke oven 11 in parallel. The guides 17, 18 are respectively guided on the working surfaces 13 of the fixed guide plates 15, 16 provided with the hooks 14, 19, respectively, and the bar hooks on the hooks 14, 19 of the fixed guide plates 15, 16 when closed. A portion 20 is provided above and below. The details will be described below. The guide sections 17, 18 and the bar section 20 are provided in the coke oven 1
1 is provided on a furnace lid body 21 (furnace lid body) that covers the furnace lid mounting frame 12 from outside. Further, inside the furnace lid main body portion 21, a fire-resistant heat insulating portion 23 made of a refractory material such as a castable that fits into the dry distillation chamber 22 of the coke oven 11;
Sealing means 24 is provided so as to surround the refractory heat insulating part 23 and seals the furnace lid mounting frame 12 from the outside.

The bar portions 20 provided above and below the furnace lid 10 are
A spring case 27 provided at the center of the furnace lid body 21 and a disc spring 28 housed in the spring case 27 are respectively provided.
One end is fitted into the space inside (center side) of the disc spring 28, and the other end is provided at the other end of the holding member 29 so as to protrude from the spring case 27, and extends right and left. And a bar member 26 to be formed. Further, the holding member 29
At the other end of the spring case 27, a hook flange portion 30 is provided to hook inside the spring case 27 so that the holding member 29 urged outward by the disc spring 28 does not protrude from the spring case 27. This allows the member 26 to advance and retreat with a predetermined stroke. The sealing means 24 is provided inside the furnace lid main body 21 at a predetermined interval between the knife edge 31 provided around the refractory and heat insulating section 23 and the furnace lid main body 21 and the knife edge 31. And a pressure contact spring 32. With such a configuration, the knife edge 31 is brought into contact with the furnace lid mounting frame 12 by the press-contact spring 32, and gas leakage from the dry distillation chamber 22 can be prevented.

Subsequently, the guide portion 1 which is a characteristic portion of the present invention.
7 and 18 will be described. As shown in FIGS. 1 and 3 to 5, the guide portions 17 and 18 are provided with support members 33 and 34 attached by bolts (not shown) to both sides of the furnace lid main body 21 slightly below the bar portion 20. Eccentric cams 38 and 39 which are fastened to the support members 33 and 34 by stud bolts 35 and nuts 36 and 37 which are examples of screws, and which are locked in the fastened state. The distance L1 is equal to the eccentric cams 38, 3
9 can be adjusted by the mounting position. Each of the support members 33 and 34 has a cylindrical main body, and brackets having screw insertion holes for mounting on both sides thereof. A female screw 44 is formed inside the main body. On the other hand, the eccentric cams 38 and 39 each have an outer peripheral portion which is formed eccentrically with respect to the insertion hole 40 which is an example of a screw hole and which is circular in plan view. In addition, the eccentric cam 3
The mechanism for locking the locks 8 and 39 to the support members 33 and 34 in a fastened state includes first uneven protrusions 42 radially provided at a pitch of 22.5 degrees around the respective insertion holes 40 of the eccentric cams 38 and 39. , The second uneven projection 43 provided on the contact surface of the eccentric cams 38, 39 of the support members 33, 34 with the first uneven projection 42. First,
Induction hardening is applied to the surfaces of the second uneven projections 42 and 43 to increase the strength against torsion. Further, the axial center of the female screw 44 provided on the support members 33 and 34 for mounting the eccentric cams 38 and 39 is substantially in the vertical direction.

As shown in FIGS. 6A to 6C, the distance between the eccentric cam 38 and the eccentric cam 39 can be adjusted by rotating the eccentric cam 38. When the distance from the furnace cover mounting frame 12 is short, the portion where the distance from the center of the insertion hole 40 of the eccentric cam 38 to the outer periphery is closest to the furnace cover mounting frame 12 as shown in FIG. When the eccentric cam 38 is fixed and the distance from the furnace lid mounting frame 12 is long, for example, when the eccentric cam 38 is rotated 90 degrees and further 90 degrees from the position (A), (B) and (C) The distance to the furnace lid mounting frame 12 can be adjusted by moving to the position shown in FIG. In the present embodiment, the rotation angle can be set at intervals of 22.5 degrees by the pitch of the first and second uneven projections 42 and 43, so that multi-stage adjustment can be performed with a small number of parts. it can. In the present embodiment, the outer shape of the eccentric cam 38 when viewed in a plan view is circular, but it can be made elliptical, and the adjustment distance changes in proportion to the rotation angle. Thus, the shape of the eccentric cam 38 may be modified.

Next, a method of using the furnace lid 10 will be described. When the furnace lid 10 is newly attached, the width L2 between the fixed guide plates 15 and 16 of the corresponding furnace lid mounting frame 12 is determined in advance by measurement or from design dimensions. Then, the outer end distance L1 of the left and right eccentric cams 38, 39 is adjusted to be -5 to -10 mm with respect to the width L2. Next, the furnace lid 10 is hung by a door lifter mounted on a mobile device (not shown), and
Go ahead towards 2. At this time, the bar member 26 of the furnace lid 10
Is gripped, and the bar ends 26 are advanced with the both ends of the bar member 26 being higher than the upper ends of the fixed guide plates 15 and 16.
Abut. When the hook members 14 and 19 are further advanced, the bar members 26 are compressed while compressing the holding members 29 and the disc springs 28.
Forward to the position above. Then, when the furnace cover 10 is pressed down and lowered downward, both ends of the bar member 26 are hooked.
Hang on 4,19. At this time, the disc spring 28 urges the furnace cover main body portion 21 to the furnace cover mounting frame 12, and the press-contact spring 3
Numeral 2 presses the knife edge 31 against the furnace lid mounting frame 12 so as to be in close contact therewith, thereby preventing gas leakage.

If the position of the furnace lid 10 in the width direction is shifted with respect to the carbonization chamber 22 when the mobile unit moves forward, one of the guide portions 17 and 18 is placed inside the fixed guide plate 15 (or 16). Since it moves while sliding, the mounting position can be corrected. When removing the furnace lid 10,
Lift the furnace lid 10 with the door lifter of the mobile unit, and
6 is removed from the hook portions 14 and 19 and retreats. Since the left and right eccentric cams 38 and 39 can be adjusted independently, it can be stably adjusted even when the furnace lid mounting frame 12 is tilted to one of right and left. As described above, the embodiment according to the present invention has been described. However, the present invention is not limited to the above embodiment. For example, the axial center of the female screw of the support member for mounting the eccentric cam is substantially in the vertical direction. The case where the nuts 36 and 37 are oriented forward has been described. However, if this is formed facing forward, the fastening operation of the nuts 36 and 37 can be performed from the horizontal direction. The present invention is also applicable to a case where the guide part of the furnace lid according to the present invention is used by attaching it to the furnace lid according to the conventional example.

[0013]

Next, an example using the furnace lid 10 for a coke oven according to the above embodiment will be described. The size of the guide portion of the furnace lid needs to be adjusted about 2 to 5 times per year for each furnace lid. In addition, one adjustment time required two hours for two persons in the existing guide unit used conventionally. On the other hand, guide portions 17 and 18 of furnace lid 10 according to the present embodiment.
Then, it took 0.75 hours for one person. Therefore, compared with the conventional case, (0.75 × 1) / (2 × 2) =
Since the work can be performed in about 3/16 of the time, the burden is greatly improved economically, which is advantageous.

[0014]

In the furnace lid for a coke oven according to the first to third aspects, the outer end distances of the left and right eccentric cams can be adjusted by the mounting positions of the eccentric cams, so that the eccentric cams can be quickly operated even under high heat and high places. In addition, accurate and accurate work can be performed to prevent gas leakage from the coke oven. In particular, claim 2
In the furnace lid for a coke oven described above, the locking mechanism of the eccentric cam is provided with the first radial projections and the second projections engaging with the projections, so that the locking mechanism can be firmly fixed with a simple structure. In addition, the adjustment can be easily performed in a short time. In the furnace cover for a coke oven according to the third aspect, since the axis of the female screw is oriented substantially in the vertical direction, the work can be performed from above even with the furnace cover attached.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a furnace cover and a furnace cover mounting frame for a coke oven according to one embodiment of the present invention.

FIG. 2 is a sectional side view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a side view of a guide part of a furnace lid for the coke oven.

FIGS. 6A to 6C are explanatory diagrams each showing a mounted state of an eccentric cam.

FIG. 7 is a plan sectional view of a furnace cover and a furnace cover mounting frame for a coke oven according to a conventional example.

[Explanation of symbols]

10: Furnace lid, 11: Coke oven, 12: Furnace lid mounting frame, 13: Working surface, 14: Hook part, 15, 16: Fixed guide plate, 17, 18: Guide part, 19: Hook part,
20: bar section, 21: furnace lid body section (furnace lid body), 22: dry distillation chamber, 23: fireproof heat insulating section, 24: sealing means, 26: bar member, 27: spring case, 28: disc spring, 29: Holding member, 30: latch flange, 31: knife edge, 3
2: press-contact spring, 33, 34: support member, 35: stud bolt (screw), 36, 37: nut, 38, 39: eccentric cam, 40: insertion hole (screw hole), 42: first concave-convex projection, 43: second uneven projection, 44: female screw

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Akira Tsuzuki Inventor 3-62, Shinmoji, Moji-ku, Kitakyushu-shi, Fukuoka F-term within FK Sangyo Co., Ltd.

Claims (3)

[Claims] 1. A guide portion having working surfaces formed in parallel on both sides of a furnace lid mounting frame and guided by the working surface of a fixed guide plate provided with a hook portion. In a furnace lid having upper and lower bar portions engaged with hook portions, each of the guide portions is fastened to a support member attached to the furnace lid body and the support member by screws, and is locked in the fastened state. A coke oven cover, wherein the outer end distances of the left and right eccentric cams can be adjusted by the mounting positions of the eccentric cams. 2. The furnace cover for a coke oven according to claim 1, wherein the mechanism for locking the eccentric cam to the support member in a fastened state is a first mechanism provided radially around a screw hole of the eccentric cam. A coke oven comprising: a first protrusion and a second protrusion, the second protrusion being engaged with the first protrusion and provided on a contact surface of the eccentric cam of the support member. Furnace lid. 3. A furnace lid for a coke oven according to claim 1, wherein an axial center of a female screw provided on said support member for mounting said eccentric cam is substantially oriented in a vertical direction. Furnace lid for coke oven.