JP4696002B2 - Storage container for asphalt mixture or heated asphalt waste - Google Patents

Description

  The present invention relates to a storage container for an asphalt mixture that can store an asphalt mixture used as a road pavement material for a long time, or a storage container for a heated asphalt waste material that temporarily stores heated asphalt waste material.

  In an asphalt plant factory that manufactures an asphalt mixture used as a road pavement material, it is generally performed to temporarily store the manufactured asphalt mixture in a large storage container in order to facilitate shipment to a construction site. Yes. In addition, in order to recycle asphalt waste, the asphalt waste is heated and temporarily stored in a small storage container called a surge bin, and this heated asphalt waste is mixed with heated new aggregate in an asphalt plant mixer. It is also common to produce asphalt mixtures. These storage containers for asphalt mixture or heated asphalt waste have an inlet at the top of the cylindrical body with the lower part formed in an inverted conical shape, an outlet with a gate mechanism at the bottom, and the temperature of the stored product is A heating and heat insulation structure is adopted so as not to decrease (Patent Document 1).

  By the way, in the storage container described above, the inner wall surface of the steel plate forming the inverted conical portion at the lower part of the storage container is worn by the input / discharge of stored items. It is confirmed that if the wear is severe, a liner is attached to the inner wall by welding to reinforce it. In addition, the gate mechanism provided at the discharge port may become unopenable due to the adhesion / curing of asphalt in the stored material. In such a case, the worker still enters the storage container and adheres / hardens. The removal work of stored goods may be performed.

And when the worker enters the storage container in this way, the ladder is lowered from the inlet at the upper part of the storage container and descends along the ladder, or the gate at the lower outlet of the storage container is entered. It is opened so that it can enter from the outlet.
JP-A-56-150203

  However, when an operator lowers the ladder from the inlet at the top of the storage container, it takes a lot of time and there is a danger of falling, etc., while it rises through the gate at the outlet at the bottom of the silo. In the same way, there is a risk that the open gate will be suddenly closed and pinched by some misoperation, and it will be very troublesome and safe work in any case. It is not preferable. In addition, when carrying materials such as an anti-wear liner into the storage container, it is not easy to carry in from either the inlet at the upper part of the storage container or the outlet at the lower part of the storage container, and the work efficiency is poor. Has a problem.

  In view of the above points, the present invention provides an asphalt mixture or a heated asphalt waste storage container that can safely and easily enter and exit the storage container and can easily carry in materials such as a liner and has excellent work efficiency. And

  In order to solve the above-mentioned problems, an asphalt mixture or heated asphalt waste storage container according to the present invention comprises a cylindrical main body having a lower conical shape formed at the bottom and a discharge opening having a gate mechanism at the bottom. An asphalt mixture or heated asphalt waste storage container having a heat insulation structure is provided with an opening through which an operator can enter and exit on the upper side wall of the cylindrical main body, and the opening is provided with an opening / closing door. In addition, a heater is attached to the open / close door, and when the open / close door is opened, a current is applied to the heater so that the asphalt adhering to the open / close door can be heated and melted.

  According to the storage container for the asphalt mixture or the heated asphalt waste material according to the present invention, a heating inlet is provided at the upper part of the cylindrical body having a lower conical shape formed at the lower part, and an outlet having a gate mechanism at the lower part. In the storage container for asphalt mixture or heated asphalt waste material, an opening is provided on the side wall above the discharge port of the cylindrical body so that an operator can enter and exit, and the opening is provided with an opening and closing door. Is equipped with a heater, and when opening the door, it is configured to apply an electric current to the heater to heat and melt the asphalt adhering to the door, so the door can be opened easily, Workers are not so dangerously high above the storage container discharge port, and they do not pass through dangerous gates, so they can be safely and easily stored in the storage container. Out with is possible, also improved work efficiency becomes material also readily carried in such liners.

  In the storage container of asphalt mixture or heated asphalt waste material according to the present invention, at least an opening of a size that allows an operator to easily enter and exit is provided on the upper side wall of the discharge port at the bottom of the storage container. Equipped with an open / close door. A heater is attached to the open / close door. This is because the stored asphalt mixture or heated asphalt waste tends to adhere to the inner wall of the storage container and harden. When the door is opened, an electric current is applied to the heater. Heating and melting the asphalt content in the storage that prevents the opening and closing of the door, so that the door can be opened without difficulty.

  When an operator enters the storage container and needs to perform some work, for example, current is applied to the heater of the open / close door about 0.5 to 1 hour before the start of the work. The stored matter that adheres and hardens on the inner wall surface and prevents the opening and closing of the door is heated, for example, to about 200 ° C. to soften and melt the asphalt so that the opening and closing door can be easily opened at the start of work.

  The worker opens the door and passes through the opening, so that the worker can enter the storage container very safely and easily. Various operations such as sticking to the inner wall surface to reinforce, or peeling and removing the storage material adhered and cured to the gate portion of the discharge port are performed. In addition, if the work is performed with the opening opened, ventilation can be improved to prevent an oxygen deficiency accident during work, and lighting can be easily secured and the work can be easily performed.

  In this way, an opening / closing door with a heater is provided above the discharge outlet of the storage container, so that entry and exit into the storage container is safe and easy, and materials such as liners can be easily carried in and inspected. Alternatively, repair work can be performed efficiently.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the figure, reference numeral 1 denotes a storage container for storing an asphalt mixture, and the peripheral wall of the storage container 1 is provided with a heat insulation structure in order to prevent the asphalt mixture as a storage from being hardened due to a decrease in temperature. The lower portion of the storage container 1 has an inverted conical shape that tapers downward, and has an inlet 2 for storing stored material at the upper portion and an outlet 3 for discharging stored material at the lower portion. Yes.

  The charging port 2 is provided with a charging gate 5 which can be moved forward and backward according to the expansion and contraction of the cylinder 4 so that it can be opened and closed. 6 is a small-diameter exhaust port provided at the top of the storage container 1 for gradually exhausting the gas generated in the storage container 1 and gradually accumulated in the upper part thereof to the outside. Reference numeral 7 denotes a suction port for sucking air in order to cancel a partial vacuum generated in the storage container 1 when the stored matter is discharged from the discharge port 3, and a suction gate which can be moved forward and backward according to the expansion and contraction of the cylinder 8. 9 is appropriately opened and closed so that air is sucked into the storage container 1 as necessary.

  The discharge port 3 is provided with a pair of discharge gates 11 that can be opened and closed according to the expansion and contraction of the cylinder 10, and the periphery of the discharge gate 11 is surrounded by a cover body 12. The lower end opening 13 is provided with a shut-off gate 15 that can be moved back and forth in accordance with the expansion and contraction of the cylinder 14 to enhance the hermeticity, and the stored matter stored in the storage container 1 is not exposed to air as much as possible by oxidation. It tries to prevent hardening and deterioration.

  In addition, an inert gas such as carbon dioxide or nitrogen is appropriately supplied into the storage container 1 or the cover body 12 from an inert gas supply source (not shown) so that the oxidation of the stored product can be further suppressed. I am trying to.

  Reference numeral 16 denotes an opening provided on a side wall slightly above the discharge port 3 at the lower part of the storage container 1, and forms an opening that can easily enter and exit, for example, an opening of about 800 mm wide × 500 mm long. A frame body 17 is provided so as to surround the opening 16, and a flange 18 having a plurality of bolt holes is formed on the outer edge of the frame body 17.

  Reference numeral 19 denotes a pair of opening / closing doors attached to the opening 16, and one end of each opening / closing door 19 is pivotally attached to a frame 17 around the opening 16. A flange 20 having a plurality of bolt holes formed in the outer edge portion of the door 19 is formed in the same manner as the frame 17. When the door 19 is closed, the flange 18 of the frame 17 and the door 19 are opened. The flange 20 is in contact with each other. Further, heat-resistant sealing materials 21 and 22 are respectively attached to the surface of the flange 18 of the frame body 17 and the side surface of the opening / closing door 19 on which the left and right opening / closing doors 19 come into contact with each other. I try to increase the degree. Moreover, the open / close door 19 has a heat insulating structure covered with a heat insulating material in the same manner as the side wall of the storage container 1.

  When closing the opening 16 with the door 19, after closing the left and right doors 19, a plurality of bolts 23 inserted from the bolt hole of the flange 18 to the bolt hole of the flange 20 are sequentially tightened. Fix firmly. At this time, since the sealing materials 21 and 22 are pressed together with the fixing operation, the opening 16 is reliably sealed.

  In this embodiment, a pair of opening / closing doors 19 is used for opening / closing the opening 16, but the present invention is not particularly limited to this. For example, a single door opening / closing door is used. Alternatively, a removable lid or the like may be employed.

  24 is an electric heater built in the opening / closing door 19, and when the stored matter adheres and hardens on the inner wall surface of the closed opening / closing door 19 and it becomes difficult to open, the asphalt component is melted by heating as appropriate. This is for facilitating the opening of the door 19. In this embodiment, the electric heater 24 is wired along the outer edge of the opening / closing door 19 so that the storage door 19 and the frame 17 and the left and right opening / closing doors 19 are in contact with each other.・ Effective heating of the areas where curing is likely to occur. The electric heater 24 employs a heater that can melt well by heating the attached asphalt to about 200 ° C. by heating for about 0.5 to 1 hour.

  Reference numeral 25 denotes a commercial power outlet. When the opening / closing door 19 is opened, a plug connected to the electric heater 24 is inserted into the outlet 25 and current is applied to the electric heater 24 to generate heat to heat the opening / closing door 19. . Although not adopted in this embodiment, the electric heater 24 may be provided with a timer for controlling the power supply time, a temperature regulator for controlling the heating temperature of the electric heater 24, and the like.

  26 is a bolt for removing the opening / closing lid 19 inserted only through the flange 20 on the door 19 side. When the bolt 26 is screwed in when the door 19 is closed, the front end of the bolt 26 is a flange on the frame 17 side. The flange 20 of the open / close door 19 is forcibly retracted by hitting 18. Even when the stored material has a strong adhesive force and the opening / closing door 19 cannot be easily opened only by heating by the electric heater 24, the opening / closing door 19 is forcibly removed from the frame body 17 by screwing the bolts 26. The opening / closing door 19 can be opened by peeling.

  Next, the case where an operator enters the storage container 1 and performs work will be described. First, about 0.5 to 1 hour before the worker enters the storage container 1, the plug of the electric heater 24 is inserted into the outlet 25 of the commercial power source to heat the open / close door 19 in advance. The asphalt content of the stored matter that adheres and hardens on the wall surface and hinders the opening of the door 19 is sufficiently softened and melted so that it can be easily opened. At the work start time, the worker climbs a ladder (not shown) to open the door 19 and then enters the storage container 1 through the opened opening 16.

  And the worker who entered the storage container 1 inspects the degree of wear of the steel sheet, and if necessary, carries various materials such as the liner A using the opening 16 and attaches them to the inner wall surface of the steel sheet for reinforcement. Or the stored material adhered to the discharge gate 11 of the discharge port 3 is peeled and removed. At this time, each of the above operations is performed with the opening 16 opened, and the lighting efficiency is ensured to improve the work efficiency, while maintaining good ventilation and preventing an oxygen deficiency accident.

  Thus, according to the storage container 1 of the present invention, it is possible to enter the storage container 1 safely and easily, and there is no danger of falling from a high place or being caught by a gate as in the prior art. preferable. In addition, materials such as the liner A can be carried in from the opening 16 and workability is good. Further, if an appropriate amount of aggregate or the like is introduced into the storage container and the work is performed using the aggregate as a scaffold, further improvement in safety and workability can be expected.

  In addition, although the said Example demonstrated the container which stores an asphalt mixture, although the storage container of a heat | fever asphalt waste material also has little storage capacity, the cylindrical shape which formed the lower cone in the shape of an inverted cone like the storage container of an asphalt mixture. The main body is provided with a charging port at the top and a discharge port with a gate mechanism at the bottom, and has a heat insulation structure, and is similar by attaching an open / close door 19 with an electric heater similar to the above embodiment. Can be expected.

It is explanatory drawing which notched one part which shows one Example of the storage container of the asphalt mixture which concerns on this invention. It is a partially cutaway enlarged view of the opening of FIG. FIG. 3 is a partially cutaway plan view of FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Storage container 2 ... Input port 3 ... Discharge port 11 ... Discharge gate (gate mechanism)
DESCRIPTION OF SYMBOLS 16 ... Opening part 17 ... Frame 19 ... Opening / closing door 24 ... Electric heater (heater)
25 ... Commercial power outlet

Claims (1)

  In a storage container for an asphalt mixture or heated asphalt waste material having an inlet at the upper part of a cylindrical main body formed in an inverted conical lower part and an outlet having a gate mechanism at the lower part and having a heat insulation structure, the cylindrical main body An opening through which an operator can enter and exit is provided in the upper side wall of the discharge port, and the opening is provided with an opening / closing door, and a heater is attached to the opening / closing door, and the heating heater is opened when the opening / closing door is opened. A storage container for asphalt mixture or heated asphalt waste material, wherein an asphalt component adhering to the door is heated and melted by applying an electric current to the door.

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