JPS6254715B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material storage container, and more particularly to a gate device for a material storage container with an airtight material outlet.

Material storage containers are used in a wide range of fields for the purpose of receiving and storing various fluid materials and then sequentially discharging them. An example of such a storage container is a storage container that is attached to a production facility for asphalt mixture used as a pavement material and is used for temporary storage in order to facilitate the loading and transportation of the mixture onto trucks. It may be provided. The asphalt mix must be maintained at elevated temperatures during storage in order to be efficiently evacuated from the storage container by gravity and to maintain sufficient fluidity for convenient subsequent use. For this reason, the composite material deteriorates due to oxidation when it comes into contact with oxygen-containing atmosphere, and this oxidation effect is further accelerated at high temperatures, so the opening of the storage container should be sealed except when taking out or taking out the aggregate. , a method is used to replace the air in the container with an inert gas.

Conventionally, as one method for sealing an opening, a butterfly-shaped gate is provided at the mixed material discharge port, the lower part of the butterfly-shaped gate is filled with oil to seal the discharge port, and the oil is removed when the gate is opened and closed. There is a device equipped with a mechanism to let the asphalt mix in and out, but with this method, the oil used to maintain airtightness comes into direct contact with the asphalt mix, causing the oil to penetrate into the mix, staining the mix, and causing oil loss. However, conversely, asphalt content dissolved into the oil, causing the oil to gradually deteriorate.

This invention improves the above-mentioned drawbacks, and uses the high sealing power of oil to prevent oil from directly touching the materials, contaminating the materials, and preventing the oil from deteriorating. The purpose of this invention is to provide a gate device.

The storage container gate device according to the present invention for achieving the above object is characterized in that the gate device selectively discharges and closes the material to the material outlet of the material storage container. A movable lifting part for draining oil is provided, a corresponding part corresponding to the lifting part is provided at the material discharge port, and a lifting means for lifting and lowering the lifting part of the gate device to fit into the corresponding part, and a sealing fluid. The present invention further includes a fluid control means for disconnecting the discharge port from the outside and removing the sealing fluid when discharging the material.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

The first perspective view of the gate device main body of the material storage container is
As shown in the figure. Figures 2 and 3 are views taken from the direction of arrows - and - in Figure 1, respectively. The material storage container 1 has a cylindrical body 5 supported on a pedestal 3.
and a conical bottom part 7 that is connected to and hangs down, and a material discharge port 9 is provided at the lower part of the bottom part 7.
will be provided. A gate device 11 is provided at the opening of the discharge port 9. The gate device is provided to be swingable about a fulcrum 17 by a pair of gate sides 15, and to be able to open and close the discharge port 9 by sliding with an air cylinder 19 and a piston rod 21 (only the center line is shown). ing. A cylindrical seal gate box 23 is provided at the lower center of the gate device, and a hydraulic cylinder 25 is attached to the lower part of this seal gate box 23. Further, an oil supply/drainage port 27 for oil for the oil seal is connected to the oil sump tank 29 . The hydraulic cylinder 25 is provided so that an oil draining gate (oil draining elevating section) 33 can be raised and lowered via a piston rod 31, and its opening/closing position can be confirmed by a limit switch 37. Further, in the center of the gate 13, a circular fixing portion 39 is provided inside the seal gate box 23 by an adjustment bolt 41. A diagonally shaded portion 39a indicates a reinforcing member.

A groove (corresponding portion) 43 is provided on the outer periphery of the discharge port 9 concentrically with the discharge port 9 in correspondence with the oil drain gate. The oil draining gate 33 connects the inside of the seal gate box 23 to the fixing part 39 by the operation of the hydraulic cylinder 25.
By rising along the outer periphery, the outlet 9 of the storage container 1 can be sealed with oil for an oil seal. The shaded area indicated by the reference numeral 39b also indicates a reinforcing member. The sealing oil level 45 is limited by a partition plate 47, and the amount can be determined by a float switch 49.

The closed position of the gate device 11 is determined by a limit switch 51, and a cylinder 53 provided in conjunction with the limit switch 51 can insert a dowel pin 55 into a part of the gate side 15 so that the closed position of the gate device 11 can be maintained accurately. It is set up like this.

Based on the above configuration, an outline of its operation is as follows. In order to charge the asphalt mixture into the material storage container 1, the gate device 11 is operated by the air cylinder 19 and the gate device is closed. After the position is confirmed by the limit switch 51, the cylinder 5
3 operates to insert the dowel pin 55 into a portion of the side plate 15, thereby holding the gate device 11 in the correct position. Next, the oil draining gate 33 is slid upward by operating the hydraulic cylinder 25 and inserted into the groove 43 provided on the outer periphery of the discharge port, and the sealing oil is supplied to the level 45 and the storage container 1 is removed from the outside. Completely cut off from air. During this time, the storage container is filled with an inert gas such as carbon dioxide gas using a converter (not shown) or the like, and the container is heated and kept warm using a heating device, as is the case with general storage containers. Furthermore, the outside of the seal gate box 23 can be kept warm by a heat cable (not shown) or the like.

Next, when releasing the seal and discharging the asphalt mixture, after discharging the sealing oil, the hydraulic cylinder 25 was operated to lower the oil drain gate 33, and the lowered position was confirmed by the limit switch 37. Thereafter, the cylinder 53 is operated to remove the dowel pin 55, the air cylinder 19 is operated to open the gate device 11, and the asphalt mixture is discharged by gravity.

Incidentally, a program can be set in advance for the above-mentioned material reception into the storage container, storage, sealing operation, discharge, etc., and all the operations of various devices can be performed automatically by control valves and the like.

If the gate device according to the present invention is used, in which the elevating part on the gate device side is fitted into the corresponding part of the corresponding discharge port, the mixed material will not deteriorate due to exposure to outside air during storage, and the oil for the oil seal will will not come into direct contact with the composite material and will not reduce the quality of the composite material or deteriorate the sealing oil.

Note that this invention is not limited to the above-mentioned embodiments, and the invention can be implemented in modes other than the above-mentioned embodiments.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the outline of the gate device, Figure 2 is a perspective view showing the outline of the gate device;
The figure is a side view of the gate device, and FIG. 3 is an enlarged sectional view of the main part. Explanation of the symbols representing the main parts of the drawing, 1...
Material storage container, 9...Discharge port, 11...Gate device, 13...Gate, 25...Hydraulic cylinder, 2
7...Seal oil supply/drain port, 33...Oil drain gate (elevating part), 39...Fixing part, 43...Groove (corresponding part), 45...Oil level.

Claims (1)

[Claims] 1. In a gate device that selectively discharges and closes material to a material discharge port of a material storage container, the gate device main body is provided with an oil draining lifting part that can be raised and lowered, and the material discharge port corresponds to the lifting part. A corresponding part is provided, an elevating means for elevating and lowering the elevating part of the gate device to fit into the corresponding part, and a fluid control for cutting off communication between the discharge port and the outside with a sealing fluid and removing the sealing fluid when discharging material. A gate device for a material storage container, characterized in that it comprises means.