JP4392589B2 - Block compression molding equipment - Google Patents

Description

  The present invention relates to a block compression molding apparatus, and more particularly to a block compression molding apparatus for molding a block used for a water shielding work for industrial waste or radioactive waste.

  When industrial waste and radioactive waste are buried in the ground, a water shielding material made of high-density clay-based material that is a mixture of bentonite or bentonite and aggregate is used as a water barrier to prevent toxic substances from leaking into groundwater. It is used.

In case of impervious work using a water shielding material, a roller compaction device or a vibration compaction device may be used for compaction at the original position. However, it is difficult to construct a high density clay-based water shielding material, as it is difficult to construct a dry density of 1.3 Mg / m ³ or more.

  Therefore, a method has been proposed in which a clay-based impermeable material molded in advance to a high density is formed into a block shape and built in place to build a impermeable layer, by pressing clay-based soil material There has also been reported an example in which a high-density molded body is formed and pre-molded into divided sized blocks to be combined around a cylindrical waste. (For example, see Technical Document 1)

  As for the present applicant, Japanese Patent Application No. 2001-385463, Japanese Patent Application No. 2002-9513, Japanese Patent Application No. 2002-9552, Japanese Patent Application No. 2002-173838, Many related applications have already been filed as Japanese Patent Application No. 2002-57160 and Japanese Patent Application No. 2002-167927, but a press apparatus as shown in FIG. 3 for forming a clay-based water shielding material into a block shape has also been proposed. Yes.

  This press apparatus 20 is supported by a sliding cylinder 22 that moves the bentonite mold 21, and blocks the bentonite 25 in the bentonite mold 21 by cylinders 23 and 24 arranged above and below the bentonite mold 21. It is compression molded into a shape.

  However, this press apparatus 20 is a press-dedicated device, and the molded block is extracted by the exclusive-extraction device. In another method, the block is taken out by disassembling the formwork. However, the fact that the block is fragile and is not suitable for mass production has not been solved, and there have been many problems for practical application.

Nuclear Fuel Cycle Development Organization, “Technical Reliability Overview Report on High-Level Radioactive Waste Geological Disposal in Japan”, November 26, 1999, p. IV-52,

  The present invention is proposed in order to solve the above problems in view of the above-mentioned problems, and a press which has been performed as a separate process with respect to an apparatus for molding a block used for a water barrier for industrial waste and radioactive waste. The present invention provides a block compression molding apparatus that can reduce the manufacturing cost by removing a formwork and taking out a block with a single apparatus.

A block compression molding apparatus according to the present invention includes a pressing member provided at the other end of a rod connected to a piston for compression molding a block, an inner cylinder including the piston, an outer cylinder including the inner cylinder as a piston, and the pressing described above. It is composed of a block molding form which is opposed to a member and is coupled to an outer cylinder, and is characterized in that a block discharge device is disposed adjacent to the block molding form.

As a result, the block compression molding apparatus is loaded with a water shielding material made of a high-density clay-based material in which bentonite and aggregate are mixed inside the block molding mold, and then the inner cylinder is fixed in a state where the inner cylinder is fixed. piston linked water material shielding the pressing member provided on the other end pressing the rod, after the pressing member is compression-molded water-impervious material, type block molding that are continuous to this by moving the outer cylinder The frame can be pulled upward to form a block of water-blocking material made of high-density clay-based material. If necessary, the block formed by the adjacent block discharge device is block-molded. The production cost is reduced by discharging outside the formwork.

A block compression molding apparatus according to the present invention includes a pressing member provided at the other end of a rod connected to a piston for compression molding a block, an inner cylinder including the piston, an outer cylinder including the inner cylinder as a piston, and the pressing described above. Since it is composed of a block molding form that faces the member and is coupled to the outer cylinder, and the block discharge device is disposed adjacent to the block molding form, the following effects are exhibited.

  1) The block compression molding device is a separate process by the conventional separate device, by placing the piston and inner cylinder that pressurize and demold on the same axis, press, remove the mold, block This eliminates the need to remove the mold, reduces the scratches on the blocks that occur during demolding, and reduces the manufacturing cost by constructing a single unit that enables small and simple operation. Yes.

2) After the block molding form is filled with a water-blocking material made of high-density clay-based material mixed with bentonite and aggregate, the rod connected to the piston of the inner cylinder with the inner cylinder fixed pressurized water material shielding the pressing member provided on the other end, after the pressing member is compression-molded water-impervious material, raising the block mold frame are continuous to move the outer cylinder upwardly, Forms a block of water-blocking material made of high-density clay-based material, and discharges the block formed by the adjacent block discharge device to the outside of the block molding formwork, so that the mold bottom and mold The molding cost is reduced by eliminating the need for fixing the side of the frame and disassembling the mold at the time of demolding to improve the molding efficiency of the block.

A block compression molding apparatus according to the present invention includes a pressing member provided at the other end of a rod connected to a piston for compression molding a block, an inner cylinder including the piston, an outer cylinder including the inner cylinder as a piston, and the pressing described above. It comprises a block molding form that faces the member and is coupled to the outer cylinder, and a block discharge device is disposed adjacent to the block molding form as required.

  A block compression molding apparatus according to an embodiment of the present invention and a process of molding a block by compressing a high density clay-based water shielding material in which bentonite and aggregate are kneaded are described in detail as follows based on the drawings. explain.

FIG. 1 is a perspective view showing an embodiment of a block compression molding apparatus according to the present invention. The block compression molding apparatus 1 includes a piston 2 to which a rod provided with a pressing member for compressing a block to be molded is provided at the other end. The inner cylinder 3 is provided with an outer cylinder 4 that constitutes the inner cylinder 3 as a piston and a block molding form 5, and the block molding form 5 is in a relationship facing the pressing member. By combining with the outer cylinder 4, the members related to the molding of the block are configured as a single unit.

  Therefore, the block compression molding apparatus 1 eliminates the need to perform block pressing, mold removal, and block removal as separate steps by separate apparatuses, unlike the conventional block molding apparatus, and is described later as a single unit. The molding apparatus itself is also made small by arranging the piston and the inner cylinder for performing pressurizing and demolding operations on the same axis so that the molding can be easily performed by this process.

  Since the inner cylinder 3 is fixed to an appropriate structure, the piston 2 and the inner cylinder 3 are configured so as to be movable relative to each other, so that the piston 2 shares the function of compression molding the block. Associated with. In addition, since the inner cylinder 3 and the outer cylinder 4 are configured to be movable relative to each other, the outer cylinder 4 moves upward, so that the block molding form 5 is released from the molded block. It is related to share.

The block molding form 5 is a hollow body made of steel, and is connected to a mounting plate 6 of the outer cylinder 4 by a screw device 7, and a connecting member 8 to the outer cylinder 4 is provided on the outer side thereof. Thus, the block molding form 5 is configured so as to be pressed against the bottom by the pressing force from the outer cylinder 4 so as to have no bottom plate, and is placed on a separate receiving plate 9. In this way, it can function as a bottom plate and send out blocks to be described later.
With these configurations, the block compression molding apparatus 1 according to the present invention eliminates the need for prior work for fixing the block molding form 5 and draws out the molding block by pulling the block molding form 5 upward. No need to dismantle the formwork.

  In this embodiment, the block discharging device 10 is disposed adjacent to the block molding form 5. However, in this configuration, after the block molding form 5 is pulled upward, the piston 2 is slightly moved. The block is pushed out to the side in order to take out the block while being pulled up, and the conventional work of disassembling the bottom of the formwork and the side of the formwork has been eliminated. Is shortened.

  Next, an embodiment of a block compression molding process in the block compression molding apparatus of the present invention will be described with reference to FIG.

1) Material input process (a)
By operating the inner cylinder 3 and the outer cylinder 4 as pistons, the fixed inner cylinder 3 presses the outer cylinder 4 downward, and the fixed state of the block molding form 5 is placed on a separate receiving plate 9. Establish. Next, a film for peeling is attached to the side of the mold, and then bentonite or a water-blocking material 11 of clay-based material in which bentonite and aggregate are kneaded is introduced.

2) Pressure molding process (b)
The piston 2 and the inner cylinder 3 are actuated to lower the piston 2 of the inner cylinder 3 to press-mold the water shielding material 11. As a result, the pressing member provided at the other end of the rod connected to the piston 2 press- molds the water shielding material 11 to a predetermined density to form the block 12.

3) Demolding (c)
While maintaining the fixed state of the piston 2 lowered in the inner cylinder 3, the inner cylinder 3 and the outer cylinder 4 are operated again, and the outer cylinder 4 is relatively moved while pushing down the fixed inner cylinder 3 downward. By raising, the combined block molding form 5 is pulled upward and removed from the molded block 12.

4) Discharge of the molded block (d)
After the piston 2 is lifted slightly upward, the block discharging device 10 is operated to push out the block 12 to the side.
5) Re-installation of block molding formwork and formwork cleaning In this step, the inner cylinder 3 and the outer cylinder 4 are further operated, and the outer cylinder 4 is lowered, so that the block molding formwork 5 is attached to the receiving plate 9. Re-install on top. Next, the block molding mold 5 is cleaned by either high-pressure injection of ethanol water or high-pressure injection of an air jet to prepare for reuse.

  As described above, the block compression molding apparatus according to the present invention improves the compression molding efficiency of the block by making it easy to perform press, mold removal, block removal, etc., which were performed as separate processes, with a single apparatus. Costs are being reduced.

  As described above, the present invention has been described in detail based on the embodiments. However, the block compression molding apparatus according to the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. It is natural that there is something.

  The block compression molding apparatus according to the present invention is used for water shielding work that prevents toxic substances from leaking into groundwater when industrial waste and radioactive waste are buried in the ground, and kneads bentonite, bentonite and aggregate. It can be applied to the molding of blocks composed of water shielding materials such as high density clay-based materials.

The perspective view which shows embodiment of the block compression molding apparatus by this invention Embodiment showing the molding process of the block compression molding apparatus according to the present invention Conventional block compression molding equipment

Explanation of symbols

1 block compression molding device, 2 piston, 3 inner cylinder,
4 outer cylinder, 5 block molding form, 6 mounting plate,
7 screwing device, 8 connecting member, 9 receiving plate, 10 block discharging device,
11 water-blocking material, 12 blocks, 20 press machine, 21 bentonite formwork,
22, 23, 24 cylinders, 25 bentonite,

Claims (2)

A pressing member provided on the other end of the rod connected to the piston compression molding blocks binding, the inner cylinder having the piston, the outer cylinder faces and the outer cylinder and the pressing member constituting the inner cylinder as a piston A block compression molding apparatus comprising a block molding form.   2. The block compression molding apparatus according to claim 1, wherein the block discharge device is disposed adjacent to the block molding form.

Images