JPS6335533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to cooling towers in dry cooling equipment for red-hot coke, etc., where particles of coke etc. need to be cut out while sealing due to internal pressure. This invention relates to a granule cutting device.

Figure 1 shows an example of dry extinguishing equipment for red-hot coke. Red-hot coke sintered in a coke oven a is transported to the upper part of a cooling tower d via a bucket b and an elevator c. The red-hot coke is charged into the cooling tower d from the input hopper e, and an inert gas is supplied from the bottom of the cooling tower d by a circulation fan f to cool the red-hot coke.
In addition, the inert gas heated (approximately 850°C) by the cooling is taken out from the upper part of the cooling tower d, and a simple dust remover g
It has a heat recovery circuit in which the inert gas, which has become low temperature (approximately 200°C), is removed by a dust removal cyclone i and then introduced to the circulation fan f. ing. i indicates the cutting device. In such a device, in order to perform continuous and stable heat recovery in the boiler h, it is necessary to continuously cut out the red hot coke from the cooling tower d while maintaining airtightness (maintaining pressure). However, the conventional cutting device i had various problems.

Figure 2 shows an example of a conventional cutting device i, in which a knife gate type cutting valve k is installed at the lower end of the cooling cylinder d.
The coke is cut out into a measuring hopper l formed at the bottom of the measuring hopper l.
By providing an intermediate bunker o having a capacity corresponding to the metering hopper l and having a lower seal gate n at its lower end under the upper seal gate m provided at the lower end, the coke can be cut out while maintaining airtightness. I am trying to do this.

However, in the above-mentioned conventional cutting device j, it is impossible to provide a seal on the knife gate type cutting valve k due to wear of the tip and clogging of the valve groove with coke. A measuring hopper l for measuring coke is provided on the lower side, and the measuring hopper l has a capacity corresponding to the measuring hopper l and seal gates m and n are provided on the upper and lower sides.
An intermediate bunker (o) equipped with a Ta.

The present invention has been made to solve the problems of the conventional device described above, and includes a substantially cylindrical casing connected to the lower part of the container via a drop port and having a discharge port on the opposite side. An outer drum having at least two outer cutting ports is provided inside the casing, and an inner drum having at least one inner cutting port is provided inside the outer drum, and both drums are rotated separately. A seal is provided between the casing and the outer drum and between the outer drum and the inner drum at a predetermined position that does not directly slide against the grains, and the seal between the casing and the outer drum is provided on the casing. This invention relates to a granule cutting device characterized in that seals between the outer drum and the inner drum are respectively fixed to the outer drum.

Embodiments of the present invention will be described below with reference to the drawings.

Figures 3 and 4 show an example of the cutting device of the present invention, in which the coke 2 is placed at the lower end of the cooling tower 1, etc.
A substantially cylindrical casing 5 is provided, which communicates with the inside of the cooling tower 1 through drop ports 3 and 3' through which the droplets fall, and has a discharge port 4 formed on the lower side. , 3', at least two external cutting openings 6 (in symmetrical positions) with a size corresponding to one of the openings 6,
7 and an inner drum 10 having at least one inner cutout port 9 are provided concentrically, and an inner drum 10 that extends outwardly through the casing 5 is provided at the center of both end surfaces of the outer drum 8. Outer drum rotation shaft 1
1 and 12, and the outer drum rotation shaft 1
A gland packing 13 is provided at the penetration portions 1 and 12, and inner drum rotation shafts 14 and 15 are provided at the center of both end surfaces of the inner drum 10, and one of the inner drum rotation shafts 14 is formed on the outer drum shaft 11. The drum is supported in the support hole 16 through a bearing 17, and the other 15 is extended to the outside through the outer drum rotating shaft 12, and a bearing 18 and a gland packing 19 are provided in the penetrating portion, and further, Bearings 20 and 2 in which the outer drum rotation shaft 11 and the inner drum rotation shaft 15 are respectively provided on a fixed member (for example, the casing 5)
1 to support it. In addition, the outer drum rotation shaft 1
1 and the respective rotating levers 2 of the inner drum rotating shaft 15
2, 23 and the rotary levers 22, 2
Cylinder devices 24 and 25 are provided for rotating the outer drum 8 and the inner drum 10, and the outer drum 8 and the inner drum 10 can be separately driven to rotate by the operation of the cylinder devices 24 and 25.

Further, an inner primary seal 26 for sealing with the inner drum 10 is provided on the inner circumferential surface of one of the outer cutting ports 6 of the outer drum 8, and at least a portion of the inner cutting port 9 is provided from the inner primary seal 26 to the inner peripheral surface of the outer drum 8. Width L
An inner secondary seal 27 is provided at a more distant position, and an outer secondary seal 27 is provided at a predetermined position below the inner surface of the casing 5 (a position where the discharge port 4 can be sealed even when the outer drum 8 is in the cutting position as shown in FIG. 5). Seal 2
8 will be provided. The inner primary seal 26 and the inner secondary seal 27 are fixed to the outer drum 8, and the outer seal 28 is fixed to the casing 5. Further, coke powder discharge pipes 29 and 30 are fixedly provided to the casing 5 and open directly above the outer seal 28 between the outer drum 8 and the casing 5, and the coke powder discharge pipes 29 and 30 are fixed to the casing 5. are provided with upper seal valves 31, 31' and lower seal valves 32, 32', respectively. In the figure, numerals 33 and 34 are gland fittings for mounting and supporting the gland packings 13 and 19, and 35 is a coke guide that guides the coke 2 to the drop ports 3 and 3' of the cooling tower 1. It has a size that can close the external cutting port 6.

Next, the operation of the present invention will be explained with reference to FIGS. 4 to 9.

FIG. 4 shows the state before cutting, in which the inside of the inner drum 10 is empty and the outer cutting outlet 6 and the inner cutting outlet 9 are located at the lower part of the coke guide 35. It is sealed by secondary seals 26, 27 and an outer seal 28.

For cutting, the outer drum 8 and the inner drum 10 are rotated together (leftward) from the state shown in FIG. 4 to the position shown in FIG. , 3' (3 in the figure), the coke 2 inside the cooling tower 1 is cut out into the inner drum 10. At this time, the seal between the cooling tower 1 and the discharge port 4 is maintained in the same manner as described above. Inner drum 1
The amount of coke 2 cut into the inner drum 10
Since it is determined by the volume of At this time, the coke 2 peaks at the upper end of the opening 9 of the inner drum 10 within the inner drum 10 to form a slope due to the angle of repose, so that an empty space is created in the upper right corner of the inner drum as shown in the figure.

Next, as shown in FIG. 6, the outer drum 8 and the inner drum 10 are rotated together in the opposite direction (to the right) so that the outer outlet 6 and the inner outlet 9 are located at the lower part of the coke guide 35. Return to the original matching position.
The seal remains the same as before.
At this time, as the coke 2 in the inner drum 10 rotates, the coke 2 that was filled in the openings 6 and 9 of the inner and outer drums moves to the empty space, and the coke 2 in the openings 6 and 9 is empty. 〓 can be done.

Next, in order to discharge the coke 2 in the inner drum 10, only the inner drum 10 is rotated while the outer drum 8 is stopped rotating, as shown in FIG. At this time, since there is no coke 2 in the openings 6 and 9 of the inner and outer drums 8 and 10 as described above, even when the inner drum 10 rotates, the coke 2 does not come into contact with the inner seals 26 and 27, so that the seals are not worn out. do not have. Therefore, in the state shown in FIG. 7, the opening 9 of the inner drum 10 is over the inner primary seal 26, so the inner primary seal 26 is not performing a sealing action, and the seal in this state is the inner secondary seal. 27 and an outer seal 28.

FIG. 8 shows a state in which the inner drum 10 has further rotated. In this state, the opening 9 of the inner drum 10 is over the inner secondary seal 27, so the inner secondary seal 27 has no sealing effect. Not yet. The seal in this state is maintained by the inner primary seal 26 and the outer seal 28. At this time, the coke 2 in the inner drum 10 sequentially flows into the opening 9 and rotates while contacting the inner wall of the outer drum 8. However, the contact area is lower than the inner secondary seal 27 and the seal 27 is not worn.

Fig. 9 shows a state in which the inner outlet 9 and the outer outlet 7 are aligned and the coke 2 in the inner drum 10 is discharged to the outlet 4. In this case, the seals are the inner first and second seals. 26, 27 and an outer seal 28.

After discharging, the inner drum 10 is rotated back so that the inner cutting port 9 is in the state shown in FIG. 4, and then the material is cut out from the drop port 3' in the same manner as described above. Further, the coke powder that has entered between the casing 5 and the outer drum 8 can be removed from the coke powder discharge pipes 29 and 3 as necessary.
By mutually opening and closing the upper seal valves 31, 31' and the lower seal valves 32, 32' through the 0, the seal can be removed while maintaining the seal.

Here, FIG. 10 shows the range where the inner and outer drums 8, 10 contact with the coke 2 and wear out. As is clear from FIG. 10, only parts of the inner and outer surfaces of the outer drum 8 are worn out due to contact with the coke 2, and moreover, the parts where the seals 26, 27, 28 contact the inner and outer drums 8, 10 are Since it does not wear out, the sealing performance will not deteriorate.

As described above, the cutting device of the present invention always maintains a seal regardless of changes in conditions, and since the parts in contact with the seals 26, 27, and 28 do not come into direct contact with the coke 2, wear is drastically reduced and the seals are sealed. Lifespan can be extended.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be applied to various devices that cut out granules while sealing from containers that require sealing, in addition to cutting out coke from a coke cooling tower. , the number of cutting ports may be varied in various ways, three or more drums may be provided, sealing methods other than gland packing may be adopted, and within the scope of the gist of the present invention. Of course, various changes may be made.

According to the granule cutting device of the present invention described above, the following excellent effects can be achieved.

(i) A double-structured drum is provided inside the casing,
Moreover, by providing a seal between the two, the granules can be cut out while sealing is always performed.

(ii) Since the cutting device itself has a sealing function and a particle measuring function, the configuration of the device can be significantly simplified and the height of the equipment can be kept low.

(iii) Due to (ii) above, the entire facility can be implemented at low cost.

(iv) Since the part that comes into contact with the seal does not come into direct contact with the particles, it prevents the sealing effect from decreasing due to wear.
It is possible to extend the life of the seal.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of coke dry cooling equipment, Fig. 2 is an explanatory diagram of a conventional cutting device installed in the coke cooling tower of Fig. 1, and Fig. 3 is an illustration of an embodiment of the present invention. A cutaway front view, FIGS. 4 to 9 are explanatory diagrams showing the structure and operation of FIG. 3 viewed from the X direction, and FIG. 10 is an explanatory diagram showing the relationship between the wear range of the drum and the seal. . 1 is the cooling tower, 3, 3' is the drop port, 4 is the discharge port,
6 and 7 are outer cutting ports, 8 is an outer drum, 9 is an inner cutting port, 10 is an inner drum, 11 and 12 are outer drum rotation shafts, 14 and 15 are inner drum rotation shafts, 24 and 25 are cylinder devices, 26 is an inner primary seal, 27 is an inner secondary seal, 28 is an outer seal, 29 and 30 are coke breeze discharge pipes, 31 and 31' are upper seal valves,
32, 32' indicate lower seal valves.

Claims (1)

[Claims] 1. A generally cylindrical casing connected to the lower part of the container via a drop port and having a discharge port on the lower side is provided, and an outer drum having at least two external cut ports is provided inside the casing. At the same time, an inner drum having at least one inner cutting port is provided inside the outer drum, and both drums are configured to be rotatably driven separately, and between the casing and the outer drum and between the outer drum and the inner drum. A seal is provided at a required position between the drum and the grain so that it does not directly slide, the seal between the casing and the outer drum is fixed to the casing, and the seal between the outer drum and the inner drum is fixed to the outer drum. Granule cutting device.