JPH057199Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a material storage container, and particularly to a material storage container equipped with an airtight material inlet and material outlet.

BACKGROUND OF THE INVENTION Material storage containers are used in a wide variety of fields for receiving and storing various flowable materials and then discharging them one after another. An example of such a storage container is one that is attached to production equipment for asphalt aggregate used in paving materials and is used for temporary storage to facilitate the loading and transportation of aggregate onto trucks. It may be provided. Asphalt aggregate 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. In addition, the aggregate deteriorates due to oxidation when it comes into contact with oxygen-containing atmosphere, and this oxidation effect is further accelerated at high temperatures. A method is used to replace the air with inert gas.

Such a material storage container has a material input port at the top and a gate that can open and close this material input port, and this gate is crimped to the material input port with a cam or the like with a sealing material interposed. A sealing method is used.

On the other hand, regarding the material discharge port provided at the bottom, a butterfly-shaped gate is provided at the material discharge port, and the lower part of the butterfly-shaped gate is filled with oil, as disclosed in Japanese Patent Publication No. 52-15608. A mechanism is used to seal the outlet and allow oil to enter and exit when the butterfly gate is opened and closed.

(Problem that the invention attempts to solve) However, regarding the former material input port,
Pressure-bonding of the sealing material causes deterioration of the sealing material, resulting in a decrease in airtightness, which necessitates the cumbersome work of replacing the sealing material.In addition, the latter material outlet is not oil-filled to maintain airtightness. As the asphalt aggregate comes into contact with the asphalt aggregate, the oil penetrates into the aggregate, staining the aggregate and causing loss of oil.On the other hand, the asphalt content dissolves into the oil, causing the oil to gradually deteriorate. There were flaws. In addition, US Pat. No. 3,532,252 discloses that a pair of butterfly-shaped gates are provided at the discharge port, a sealed chamber is provided below the gates so that the air inside can be replaced with inert gas, and a sliding door is provided at the bottom opening of the sealed chamber. Although a storage container equipped with a sliding gate is shown, this device has a problem in that aggregate tends to adhere to the sliding gate, making it difficult to maintain airtightness.

The present invention was developed by focusing on these conventional problems, and eliminates the need to replace the complicated sealing material for the material input port, and eliminates the need for complicated sealing material replacement work for the material outlet. The object of the present invention is to provide a material storage container that prevents contamination of the material and also prevents deterioration of airtightness.

[Structure of the invention] (Means for solving the problem) In order to achieve this purpose, the invention is provided with an airtight material input opening opening upward and an airtight material discharge opening opening downward. In the material storage container, an annular recess is provided around the material input port, an upper gate is provided that can be opened and closed with respect to the annular recess and the material input port, and the annular recess is filled with a highly viscous oil and fat, and the material is discharged. A lower first gate is provided at the outlet, and an airtight chamber for accommodating an inert gas is provided below the material discharge port, and an opening with a diameter larger than the material discharge port is provided below this airtight chamber. A lower second gate having a recess that can surround the opening is provided below the opening so as to be openable and closable with respect to the opening, and the recess is filled with a highly viscous fat or oil.

(Function) When the annular recess is filled with oil and fat with the upper gate blocking the material input port, the oil comes into contact with the lower surface of the upper gate and the material input port is sealed. Further, by arranging a recess below the opening having a larger diameter than the material discharge port, and filling this recess with oil and fat, the material discharge port is sealed.

(Example) An example of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, which generally shows the material storage device according to the present invention, 1 is a material storage container, and 3 is a material adjustment and supply device. The material storage container 1 is mounted on a pedestal 5
It is composed of a cylindrical body part 7 supported by a cylindrical body part 7, and a conical bottom part 9 that is connected to and hangs down from the body part 7. At the top of the body part 9, there is a sliding valve as an upper gate shown in FIG. A circular material inlet 13 with 11 is provided. As shown in FIG. 4, an annular member 15 having an L-shaped cross section and consisting of a bottom plate 15a and a side plate 15b is tightly fixed around the upper end of the material input port 13. The annular member 15 and the material input port 13 form an annular recess 17 filled with a highly viscous fat or oil 16 such as lubricating oil, grease, or liquid soap.

A pair of guide rails 19 are attached to the bolts 2 on the upper surface 7a of the body 7 on both sides of the material input port 13.
0, bracket 21 connected by nut 22
The slide valve 11 is slidably provided on the guide rail 19, and the material input port 13 is opened and closed. The upper end of each guide rail 19 is bent inward, and this bent portion,
A guide portion is formed between the roller rolling plate 24 attached to the inner surface of the guide rail 19, while both sides of the slide valve 11 are bent upward, and the guide portion is formed at this bent portion. A roller 23 rolling within the section is rotatably mounted by a nut 26. In addition, the lower surface of the sliding valve 11 and the material input port 1
3 and the upper ends of the annular member 15 maintain a sliding positional relationship with each other.

Fluid pressure cylinder 2 that slides the slide valve 11
5 is fixed to the upper surface 7a of the body 7 via a bracket 28, while the tip of the piston rod 27 of the hydraulic cylinder 25 is fixed on the slide valve 11.

As shown in FIG. 5, adapters 29 that communicate between the annular recess 17 and the outside are fitted and fixed at eight locations around the annular member 15, and a sub-pipe 31 is attached to the outside of each adapter 29. ing. Each sub-pipe 31 is connected to a main pipe 35 via a predetermined continuous pipe 33 branched into three directions. Each main pipe 35 is connected to a pump (not shown) that pumps oils and fats 16 from a liquid tank (not shown).

Next, the material discharge port side will be explained.

FIG. 6 shows the details of the bottom part 9 of the material storage container 1. The bottom part 9 is provided with a material discharge port 37 at its lower end, and a material discharge port 37 is provided on the outside of the discharge port 37 to surround this. A cylindrical side wall 39 that hangs down, a bottom wall 41 that closes the lower end of the cylindrical side wall 39, and a rectangular cylindrical opening 43 that is connected to the bottom wall 41 and has a larger diameter than the discharge port 37 are provided. ing.

At the open end of the material discharge port 37, a pair of butterfly-shaped lower first gates 45 are arranged such that the outer edge of each gate is connected to the inner surface of the cylindrical side wall 39 with the other end provided symmetrically outwardly. The piston rod 49 of a hydraulic cylinder 47 is pivotally connected to one end of the piston rod 49, and the piston rod 49 is pivotally connected to the piston rod 49.

Below the opening 43 is a highly viscous oil 1.
A butterfly-shaped lower second gate 55 having a recess 53 on the upper surface for receiving the oil and fat 16 is provided, and by filling the recess 53 with oil and fat 16, the opening 43 is hermetically sealed and the lower first An airtight chamber 57 is formed between the gate 45 and the cylindrical side wall 39. One end of a piston rod 63 of a hydraulic cylinder 61 is pivotally connected to the piston rod 63 so that the piston rod 63 can be opened and closed by the operation of the hydraulic cylinder 61.

Furthermore, a pair of pipes 65 are provided in the butterfly-shaped lower second gate 55 for letting the oils and fats 16 in and out.
However, as shown in the figure, the rotary joint 6 attached to the shaft 59
7 or connected via a flexible tube, and communicates with the separately provided liquid tank via a valve 69 and a pump (not shown). In addition, on the side of the material storage container 1, for example,
A converter 71 for inactivating air having a structure as shown in Publication No. 15083 is provided, and pipes 73, 75, 77, 79 are disposed between the storage container 1 and the airtight chamber 57, Valve 81, 8
3, 85, 87 and a blower 89 are attached. Further, the peripheral wall of the storage container 1 is provided with heating equipment (not shown) such as a heating tube connected to a heater in order to maintain the material inside the container at a constant temperature.

The material adjustment and supply device 3 includes a material adjustment device 9
1. It is composed of an electric horizontal transport device 97 that transports the bucket cart 95 in the horizontal direction along the rail 93, and a vertical transport device 105 that pulls the bucket cart 99 with a wire 101 and transports the bucket cart 99 in the vertical direction along the rail 103. Ru. 107 is the input port 1 of the storage container 1
A hopper for receiving materials provided above 3, 10
9 is a winch for winding the wire 101.

In addition, adding materials to the storage container 1, storing them,
The various devices for discharging can be operated automatically by installing hydraulic control valves, solenoid valves, etc. in appropriate locations and setting programs in advance.

Next, the operation of the above configuration will be explained. First, when the pair of fluid pressure cylinders 47 provided on the outside of the material discharge port 37 of the material storage container 1 is actuated, a pair of butterfly-shaped lower first piston rods pivotally connected to the tips of the piston rods 49 of the fluid pressure cylinders 47 are activated. gate 4
5 rotates around pivots 51, 51 to close the material discharge port 37. Next, when the fluid pressure cylinder 61 attached to the pedestal 5 on the side of the bottom 9 of the storage container 1 is actuated, the butterfly-shaped lower second gate 55 pivoted to the tip of the piston rod 63 moves the shaft 59. The lower first gate 4 rotates around the center.
5 and below the opening 43 of the airtight chamber 57 provided around the lower first gate 45. After that, when the valve 69 of the pipe 65 is opened and the oils and fats 16 are sent out from the liquid tank (not shown), the oils and fats 16 are transferred to the pipe 65.
5 and flows into the recess 53 formed on the upper surface of the lower second gate 55, thereby blocking the airtight chamber 57 from the outside air.

In this state, even if the adjustment material is put into the storage container 1 as described later, the oil and fat 16 comes into contact with the opening 43 located below the material outlet 37, so the oil and fat 16 comes into contact with the adjustment material. This prevents contamination of the material and loss of the oils and fats 16, or prevents the oils and fats 16 from penetrating into the stored material and deteriorating the material, and also prevents the material from adhering to the material outlet 37 and causing the storage container 1. Since the airtightness of the storage container 1 is not disturbed, the quality of the storage container 1 can be maintained. Moreover, this oil and fat 1
6 has a high viscosity, so it is difficult to flow out to the outside, and even if the material storage container 1, especially near the material discharge port 37, is subjected to an external shock, etc., the oils and fats 16 in the recess 53 have a high viscosity. Due to its nature, it is difficult to leak outside.

In this state, after the oils and fats 16 in the annular recess 17 on the side of the material input port 13 are discharged into the liquid tank, the fluid pressure cylinder 25 is operated to slide the material input port 13 provided at the upper part of the storage container 1 into the liquid tank. The valve train 11 is opened to allow the conditioning material such as aggregate to flow into the storage container 1 . The material to be adjusted is adjusted in the material adjustment device 91, and is dispensed from the bottom of the device at any time to be transferred to the horizontal conveyance device 97.
It is transferred onto the rails 93 and transferred to the bucket 99 of the vertical conveyance device 105, and is carried above the storage container 1 by the wire 101 along the rail 103, and the material input port 13 is removed from the hopper 107. When supplied into the storage container 1 through
The conditioning material is retained by the lower first gate 45 and deposited in the storage container 1 .

When the fluid pressure cylinder 25 is operated after the material is input, the slide valve 11 attached to the tip of the piston rod 27 of the fluid pressure cylinder 25 moves to above the material input port 13 and closes the material input port 13. Thereafter, when the oil and fat 16 is delivered from a liquid tank (not shown), the oil and fat 16 fills the recess 17 and comes into close contact with the lower surface of the slide valve 11, so that the material input port 13 is hermetically sealed. This sealing operation can be easily performed by simply discharging the oil and fat, and there is no need to replace the conventional sealing material.

Furthermore, since the oils and fats 16 have a high viscosity, they are difficult to flow out from the annular recess 17 and the problem of entering the storage container 1 is also prevented. Material input port 1
3, the oil and fat 16 may be taken out from the annular recess 17 by a pump, and then the slide valve 11 may be opened.

Next, the valves 83 and 85 of the pipes 75 and 77 are opened, and the blower 89 is used to remove the storage container 1 and the airtight chamber 5.
7 is led to the converter 71, where it is brought into contact with red-hot carbon and combusted, and then returned to the storage container 1.
By returning it to the airtight chamber 57 and circulating it, it is converted into an inert gas such as carbon dioxide gas to prevent the conditioning material in the storage container 1 from being oxidized and deteriorated, and at the same time, outside air flows in from the material outlet 37. prevent them from doing so. In addition, the storage container 1 is heated by a heating device (not shown) to maintain the internal temperature constant and prevent deterioration of the conditioning material due to temperature changes.

In order to discharge the adjusted material from the storage container 1 to a truck or the like, first, the control valves 83 and 8 of the pipes 75 and 77 are opened.
5, the valve 69 of the pipe 65 is opened and the pump is reversed, and the recess 53 of the second lower gate 55 is opened.
The oils and fats 16 inside are discharged into a liquid tank. Thereafter, when the fluid pressure cylinder 61 is actuated, as the piston rod 63 contracts, the lower second gate 55 rotates laterally about the shaft 59 and moves away from the open end of the opening 43 . In this state, when the hydraulic cylinder 47 is actuated after guiding the truck below the opening 43, the contraction of each piston rod 49 causes the pair of lower first gates 45 to open.
each rotates outward about the pivot 51 and opens into left and right parts, so that the adjustment material held therein falls into the loading platform of the truck.

The diameter of the opening 43 is larger than the diameter of the material discharge port 37, and the lower second gate 55 is rotated significantly laterally, so the falling adjustment material may damage the opening 43 and the lower second gate 55. There is no risk that the second gate 55 will be soiled. When a predetermined amount of dispensing is completed by detecting the weight of the truck or the time required for dispensing the adjustment material, the fluid pressure cylinder 47 is operated to close the first lower gate 45, and the second lower gate is then closed in the same manner as described above. The inside of the storage container 1 is kept airtight by closing the storage container 55, injecting oil and fats 16 to isolate the airtight chamber 57 from outside air, and converting or replacing the air in the airtight chamber 57 with an inert gas. I can do it. Note that the adjustment material can be dispensed from the storage container 1 at any time regardless of the supply.

[Effect of the invention] As described above, according to the material storage container according to the invention, when the upper gate is closed and the recess is filled with oil and fat, the material input port is airtightly sealed, so it is not necessary to seal as in the conventional case. There is no need for the troublesome work of replacing materials, and airtightness can be easily maintained with a simple structure. Moreover, since these oils and fats have a high viscosity, they are difficult to flow out from the annular recess, and problems such as entering the storage container are also prevented. In addition, when the recess below the second lower gate is filled with oil, the opening below the discharge port is blocked with oil and fat to maintain airtightness, so oil and fat can be converted into conditioning materials such as asphalt aggregate. Prevents material from coming into contact with the material, resulting in soiling of the material and loss of oils and fats, or preventing oils from penetrating into the storage material and deteriorating the material, and also preventing material from adhering to the outlet and preventing the airtightness of the storage container. Therefore, the quality of the stored material can be maintained.

Moreover, since the viscosity of these oils and fats is high, it is difficult for them to flow out from the recess, and even if the material storage container, especially near the material discharge port, is subjected to an external shock, etc., the oil and fat in the recess will be released. It also has the advantage of being difficult to leak outside due to its high viscosity.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a material storage device equipped with a material storage container according to an embodiment of the present invention, FIG. 2 is an enlarged detailed front view of the material storage container shown in FIG. Figure 3 is a top view of Figure 2, Figure 4 is an enlarged cross-sectional view of Figure 2, and Figure 5 is a top view of Figure 2.
FIG. 6 is an enlarged front detailed view of the material outlet of the material storage container of FIG. 1; 1... Material storage container, 11... Sliding valve (upper gate), 13... Material input port, 16... Oils and fats,
17... Annular recess, 37... Material discharge port, 45...
...Lower first gate, 53...Recess, 55...Lower second gate, 57...Airtight chamber.

Claims (1)

[Scope of utility model registration request] In a material storage container equipped with an airtight material input port opening upward and an airtight material discharge port opening downward, an annular recess is provided around the material input port, and the annular recess and the material input port are provided with an annular recess. In contrast, an upper gate that can be opened and closed is provided, the annular recess is filled with a highly viscous oil and fat, a lower first gate is provided at the material discharge port, and an airtight chamber is provided below the material discharge port to accommodate an inert gas. An opening having a diameter larger than the material discharge port is provided below the airtight chamber, and a lower second gate having a recess capable of surrounding the opening is opened and closed with respect to the opening. A material storage container characterized in that the recess is filled with a highly viscous oil or fat.