JPH0238602A - Sealing device for material storage container - Google Patents

Abstract

PURPOSE:To prevent inflow of air to a container by surrounding an opening of a material discharge member of a storage container for asphalt or the like with a gate, a cover member and sealing members, and by providing liquid sumps, storing liquid, between the members. CONSTITUTION:To the bottom of a storage container body 1 that stores asphalt paving mixture or the like, a gate 3, equipped with wheels and capable of opening and shutting by operations of pistons and cylinders 9 and 8, is provided. To the surroundings of a cover member 17 that is fixed to the surroundings of a material discharge member 2, sealing members 19 that are lifted up and down by operations of pistons and cylinders are provided. Bent members 19a of the sealing members 19 are inserted into a liquid sump 18 that is provided to the outer periphery of the cover member 17. Then bent members 19b provided on the lower end of the sealing members 19 are inserted into a liquid sump 11 of the gate 3. Thereby, the gate 3 is sealed through the medium of the sealing liquid stored in the liquid sumps 11 and 18.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a sealing device for a material storage container, such as a storage container for storing an asphalt mixture used as a road paving material, which requires an airtight material discharge part. It is related to.

[Prior Art] Asphalt a compound tends to undergo oxidative deterioration when exposed to air, so when storing it in a storage container for a long time, it is necessary to prevent air from entering the container. Maintaining the airtightness of the material discharge gate is an important issue, and various airtight mechanisms have been adopted9.
There are inventions and ideas disclosed in Publication No. 7197 or Japanese Utility Model Publication No. 59-31600 that seal the gate using a sealing liquid, but these employ a two-stage gate. .

[Problems to be Solved by the Invention] However, in a sealing device that employs a two-stage gate, maintenance and inspection of the gate portion inside the sealed airtight chamber is not easy.

The present invention solves these conventional problems,
The object of the present invention is to provide a sealing device that can maintain airtightness even with a single-stage gate.

[Means for Solving the Problem] In view of the above points, in order to achieve the above object, the present invention has the following features:
A gate is provided that moves parallel to the opening surface of the material discharge part of the material storage container to an open position and a closed position, a liquid reservoir is formed on the outer periphery of the gate, and a gate is provided on the outer periphery of the material discharge part of the container. A cover body is fixed in parallel, a liquid reservoir is formed on the outer periphery of the cover body, and a lower part of the upper part of the cover body is inserted into the liquid reservoir of the cover body and the liquid reservoir of the gate when the cover body is lowered to form a gate. A sealing body that closes the gap between the gate and the cover body to make it airtight is provided so that it can move up and down, and a cover plate that can cover the liquid reservoir on the material cutting side of the gate is rotatably attached to the gate. The present invention provides a sealing device for a material storage container.

[Function] According to the present invention, when the material is stored in the material storage container, the cover plate attached to the gate is retreated from the liquid reservoir part of the gate, the sealing body is lowered, and the lower part of the sealing body is removed. It is inserted into the liquid reservoir provided on the outer periphery of the gate and cover body, and the gap between the gate and cover body is sealed with a sealing liquid, blocking air from entering from the outside and discharging it. Keeps the area airtight.

When discharging the material from the material storage container, first raise the sealing body, then rotate the cover plate in a direction approaching the liquid reservoir of the gate, and use the cover plate to cover the liquid reservoir on the material cutting side of the gate. After covering the gate to prevent the material from falling into the liquid reservoir of the gate when the gate is moved, move the gate forward in the opening direction to discharge the material.

[Example] Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a storage container main body for storing an asphalt mixture, etc., and a material discharge section 2 at the lower end thereof is provided with a gate 3 that moves approximately parallel to the opening surface of the container and opens and closes the material discharge section 2. There is. Bearings 4 are fixed to the four corners of the lower part of the gate 3, supporting a shaft 6 with wheels 5 attached to both ends, and are movable on a rail 7 provided parallel to the opening surface of the material discharge section 2. Then, the tip of the piston rod 9 of the cylinder 8 fixed to the rail 7 is attached to the plate 10 fixed to the gate 3, and the gate 3 is advanced by the extension of the piston rod 9 of the cylinder 8, and the material is discharged from the material discharge part 2. death,
The contraction of the piston rod 9 causes the gate 3 to retreat, thereby closing the opening of the material discharge section 2.

11 is a liquid reservoir provided on the outer periphery of the gate 3, and the height of the weir 11a forming the liquid reservoir 11 is equal to the sliding surface 3 of the gate 3.
It is slightly lower than position a. 12 is a cover plate that covers the liquid reservoir 11 to prevent material from falling into the liquid reservoir 11 when the gate 3 is advanced in the opening direction, and the arm 13 fixed to both ends of the cover plate 12 is connected to the shaft A fixed piece 1 is rotatably attached to the gate 6, and the lower end of the arm 13 is fixed to the gate 3.
The arm 13 is pivotally connected to a piston rod 16 of a cylinder 15 attached to the cylinder 4, and the arm 13 is rotated by the expansion and contraction of the piston rod 16. When the piston rod 16 contracts, the force plate 12 retreats from the liquid reservoir 11, and when the piston rod 16 extends, it is positioned in contact with the sliding surface 3a so as to cover the upper part of the liquid reservoir 11, and when the gate 3 moves to open, Preventing material from falling into the liquid reservoir 11.

Reference numeral 17 denotes a cover body fixed to the material discharge section 2 above the gate 3, and a liquid reservoir section 18 in which sealing liquid is stored is formed on the outer periphery of the cover body. 19 is a sealing body that closes and seals the gap between the gate 3 and the cover body 17;
It can be raised and lowered freely by the expansion and contraction of the piston rod 21 of the cylinder 20 attached to the cover body. 17, the lower part of the bent portion 19b at the lower end is inserted into the liquid reservoir 11 of the gate 3, and the gap between the gate 3 and the cover body 17 is sealed by the sealing liquid.

Therefore, when the material discharge port 2 is closed, the piston rod 16 of the cylinder 15 is contracted, the cover plate 12 is retreated from the liquid reservoir 11, and the piston rod 16 of the cylinder 20 is
1 and lower the sealing body 19, the bent portion 19a,
19b are inserted into the liquid reservoir 18 of the cover body 17 and the liquid reservoir 11 of the gate 3, respectively, and the gap between the gate 3 and the cover body 17 is closed and sealed. When discharging the material from the storage container main body l, the piston rod 21 of the cylinder 20 is contracted to raise the sealing body 19, and then the piston rod 16 of the cylinder 15 is extended and the cover plate 12 is moved to the gate 3. It is brought into contact with the material cutting side end of the sliding surface 3a to cover the liquid reservoir ti.

Then, the piston rod 9 of the cylinder 8 is extended to move the gate 3 forward, but the liquid reservoir 11 on the material cutting side is covered with a cover plate 12 so that the material can be discharged without falling into the liquid reservoir 11. Can be done.

[Effects of the Invention] As described above, in the present invention, the opening of the material discharge portion 2 of the storage container body 1 is connected to the gate 3, the cover body 17, and the sealing body 1.
9, and a liquid reservoir containing sealing liquid is interposed between each, so that the intrusion of outside air can be completely blocked.
Stored materials such as asphalt mixture stored in the storage container body 1 can be stored for a long time without being oxidized.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal front view showing one embodiment of the present invention, and FIG.
The figure is a bottom view of FIG. 1, and FIG. 3 is a sectional view taken along the line A--A of FIG. 1.

Claims (1)

[Claims] A gate is provided that moves parallel to the opening surface of the material discharge part of the material storage container to an open position and a closed position, a liquid reservoir is formed on the outer periphery of the gate, and a gate is provided on the outer periphery of the material discharge part of the container. A cover body is fixed in parallel, a liquid reservoir is formed on the outer periphery of the cover body, and a lower part of the upper part of the cover body is inserted into the liquid reservoir of the cover body and the liquid reservoir of the gate when the cover body is lowered to form a gate. A sealing body that closes the gap between the gate and the cover body to make it airtight is provided so that it can move up and down, and a cover plate that can cover the liquid reservoir on the material cutting side of the gate is rotatably attached to the gate. A sealing device for material storage containers.