JPS6349264A - Gravel regenerator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a gravel recycling device, particularly to a gravel recycling device for extracting gravel such as cobbles from concrete.

(Conventional technology) Concrete has traditionally been used for structures such as pillars and foundations of buildings.
・When demolishing these structures or other non-concrete structures as they age, not only the concrete structures but also their foundations must be dismantled and disposed of as waste. It must be.

However, the amount of concrete waste resulting from demolition is increasing year by year, and currently it is broken up into small pieces and dumped in landfills, etc., but this method of disposal is becoming increasingly difficult as the number of places to dump it decreases. It is becoming a problem as a source of pollution.

On the other hand, social problems such as the depletion of river-grown materials such as cobblestones used in concrete, restrictions on the collection of land-sourced aggregates, and traffic congestion due to long-distance transportation are occurring, and these concrete QUs are being consumed in large numbers. There are also increasing resource constraints.

(Problem to be solved by the invention) If the dismantled concrete waste could be reused as concrete aggregate or other materials, it would be possible to prevent pollution, utilize resources,
Although this is preferable from the standpoint of saving ¥1, the following method is generally used to recycle concrete waste as crushed stone.

That is, the material crushed by the jaw crusher is crushed by the re-splitting jaw crusher (referred to as re-splitting or secondary crushing).

■ Crushing with a re-splitting crusher (referred to as re-splitting or secondary crushing).

■ Crush with an impact crusher (referred to as re-crushing or secondary crushing).

It is crushed to a size of 40 m/m or less and used as recycled crushed stone for backfilling or as roadbed material.

However, these recycled crushed stones have not yet been used as aggregate for concrete. Cement mortar still adheres to the cobblestones in large amounts, and the presence of such adhesion tends to reduce the strength and elasticity of concrete compared to concrete made from unused cobblestones.

In addition, a phenomenon is observed in which the adhesive strength of concrete decreases.

Therefore, although it is essential for the regeneration of gravel to completely remove these deposits such as mortar, it has been considered impossible.

In view of this, the present invention makes it possible to completely remove cement mortar attached to cobblestones by adding a chalk feed type crusher and a beetle to the gravel regeneration using conventional jaw crushers, resplit crushers, etc. The purpose of this invention is to provide a gravel regeneration device that overcomes the drawbacks of the prior art.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a jaw crusher that receives crushed concrete from a raw stone hopper, a re-splitting crusher that receives crushed concrete from the jaw crusher, A chalk feed type crusher that receives concrete crushed stone from the re-splitting crusher and crushes it between the crushed stones, and a crusher that receives concrete crushed stone from the chalk feed type crusher and crushes it under strong pressure to obtain gravel are sequentially installed. We offer gravel recycling equipment.

(Function) With this configuration, concrete crushed stone is crushed from the jaw crusher to the re-splitting crusher, the crushed stones are crushed together in the chalk feed type crusher, and further crushed by strong pressure in the beetle, resulting in unused gravel. It can be played like this.

(Example) The present invention will be described below with reference to the example shown in FIGS. 1 to 4.

The gravel regeneration device according to the present invention is shown in FIG.
As shown in the outline in the chart, there is a raw stone hopper 1, a jaw crusher 2 that crushes the concrete crushed stone sent from the raw stone hopper, a re-splitting crusher 3 that further crushes the crushed stone crushed by this jaw crusher 2, and this re-splitting It is composed of a combination of a choke feed type crusher 4 that crushes the crushed stone from the crusher 3, and a beetle 5 that crushes the crushed stone from the choke feed type crusher 4 by applying strong pressure.

The rough stone hopper 1 has various sizes, for example, length x width x height M of 600 x 800 x 1200.200 x 40.
Concrete lumps crushed to 0x600, etc.) are received from the top and fed into the jaw crusher 2 from the bottom by operating an electric feeder 6 or the like.

The jaw crusher 2 has a crushing chamber 8 surrounded by a machine frame 7, as shown in FIG. is formed by a movable side plate 10 which is inclined so as to be wide at the top and narrow at the bottom, and a blade is formed on this side 110.

A belt pulley 11 equipped with a counterweight is provided on the second part of the machine frame 7, and the belt pulley 11 is driven via a belt 12 by a motor (not shown) provided outside the machine frame 7. It is done.

The side plate 10 is attached at the upper part so that the rotation center 02 is eccentric to the center 01 of the belt pulley 11, so that when the bell [11 rotates,
Accordingly, the side plate 10 is supposed to swing up and down and back and forth.

The concrete crushed stone is carried in through the inlet 13 and discharged through the outlet 14, but at this time it is crushed by the blades of the side plates 9 and 10, and even if it is large, it can be reduced to less than 200 mm.

As schematically shown in FIG. 3, the resplit crusher 3 is constructed by providing a fixed frame 16 around a mantle 15 that is shaped like a cone and expanding from above to below, thereby converting the space into a crushing chamber 17. A charging port 18 connected to the frame 16 is provided above the frame 16 to temporarily store crushed concrete sent from a feeder (not shown) and send it to the crushing chamber 17. . (Some mantles 15 are provided with an evenly distributed supply mechanism 19 inclined at the upper part of the mantle 15 to receive crushed stones from the loading port 18 and evenly supply them into the crushing chamber 17.) A crown gear 21 supported by an eccentric bearing 20 and fixed to the eccentric bearing 20 meshes with a bevel gear 23 on one side of a binion shaft 22 provided perpendicularly to the shaft 20, and a bevel gear 23 provided on the other side of the same binion shaft 22. The belt pulley 24 is rotated by being rotated via a belt from a drive source (not shown).

Furthermore, a crushing chamber 1 is provided at the lower end of the eccentric bearing 20.
A hydraulic mechanism 25 for adjusting the pressure of 7 is provided. The concrete crushed stone carried into the crushing chamber 17 from the charging port 18 is crushed in the crushing chamber 17, and even if it is large, it is 80 Im.
The water is discharged from the conical end of the mantle 15 to the discharge port 26.

The choke feed type crusher 4 is structurally similar to the re-splitting cracker 3 shown in FIG. It is designed to perform crushing, and can reduce crushed stone to well-shaped particles of 25 or less.

The Beetle 5 has a crushed stone input port 28 at the top of a cylindrical crushing chamber 27, and inside the crushing chamber 27 there are crushing blades on one side,
and a feed blade screw 29 is rotatably provided,
A mantle-shaped pressurizer 030 is rotatably provided on the other side.

The screw 29 and the pressurizing fli30 are each driven by independent drive sources 31.32 via reduction gears 33.34, respectively.

Further, the crushing chamber 27 is provided with a water supply port 35, and the pressurizing lid 30 is provided with an outlet 36, respectively.

The rotations of the screw 29 and the pressure N30 are reversed, so that the cement mortar portion attached to the cobblestone obtained by crushing can be removed.

In addition, in the 70-diagram of FIG. 1, the triangle 37.
38, 39, and 40 are storage tanks, respectively, and inverted triangles 41.4
2.43.44 and the diagonal 145.46 above it are vibration filters, the boat shape 47 is sand/water separation material, solid lines 47 to 60 are conveyors, square 61.62 is a water tank, 63 is a settling tank,
Dotted lines 64-68 indicate water pipes.

Next, the effect will be explained.

First, the concrete 1 ~ lumps put into the raw stone hopper 1 are
By operating the electric feeder 6, it is fed into the crushing chamber 8 of the jaw crusher 2 from the lower part.

In the crushing chamber 8, the side plate 10 swings up and down and back and forth by driving the drive source to rotate the belt pulley 11, and as a result, the crushed stones are crushed to 200 pieces or less even if they are large.

At that time, the sand that has become powder due to crushing is filtered into the filter 4.
1 in the direction of the arrow in the passage 48.

The crushed crushed stone of 200 mm or less is carried by the conveyor 49 and charged into the re-splitting crack p3. In the re-splitting crusher 3, the concrete crushed stone is crushed in the crushing chamber 17 by the rotation of the mantle 15, and the concrete crushed stone is crushed by 80 sn The crushed stones crushed into the following sizes are conveyed to filters 45 and 42, only the sand merges with that of the passage 48 and is stored in the storage tank 38, and the crushed stones with a size exceeding 40 m are recycled again by the conveyor 50. It is thrown into the split crusher 3. The crushed stone from which sand has been removed at a size of 401 M or less is stored in a storage tank 37 by a conveyor 51, placed on a conveyor 53 by an electric feeder 6', and fed into the choke feed type crusher 4.

In the crushing chamber of the chalk feed type crusher, the stones are crushed by being rubbed between the crushed stones, most of the cement mortar etc. adhering to the stones are removed, and the stones are sized to 25 seconds or less.

The crushed stone discharged from the choke feed type crusher 4 is passed through a vibration filter 43, 46, and the sand content is transferred to a conveyor 48 via a conveyor 56, and the sand content is removed.
Crushed stones with a size of less than m are fed into the beetle 5 by a conveyor 55. Those exceeding 251M are sent to the choke feed type crusher 4 again by the conveyor 54.

In the Beetle 5, water from the water tank 61 is sent from the pipe 68 to the crushing chamber 27 through the water supply port 35, and the crushed stones are crushed together with the water, so that most of the cement mortar adhering to the cobbles is removed.

As a result, gravel is obtained that does not have cement mortar adhering to it, similar to unused gravel.

In addition, the sand/water separation material 47 separates and discharges the precipitated sand by a screw conveyor and sends it to the storage M11f139, but the water is further separated and purified in the sedimentation tank 63 and sent from the pipe 61 again to the water tank. It will be collected at 57.

In this embodiment, the case where one choke feed type crusher 4 and one Beetle 5 are used has been explained.
Depending on the production volume and the difference in machine operating method, each process may be repeated using two machines, and the machine is not necessarily limited to the embodiment.

It should be noted that impurity removal and quality inspection are performed in each step, but they are excluded from the explanation as a matter of course.

(Effects of the Invention) As explained above, the present invention includes a jaw crusher that receives concrete crushed stone from a raw stone hopper, a re-split crusher that receives concrete crushed stone from the jaw crusher, and a re-split crusher that receives concrete crushed stone from the re-split crusher to crush the concrete. A chalk feed type crusher that crushes the
By sequentially installing beetles that receive crushed concrete from the chalk feed type crusher and crush it under strong pressure to produce gravel, cement mortar adhering to the cobbles can be completely removed, leaving the concrete unused. It can be recycled in the same way as cobblestones, and this can solve the problem of lack of strength of conventional concrete that occurs in the case of recycling.It can also fully compensate for the current shortage of unused cobblestones, and at the same time Since sand can also be collected, the effect of killing two birds with one stone is increased by 1q.

[Brief explanation of drawings]

FIG. 1 is a flowchart of a gravel regeneration device according to the present invention, FIG. 2 is a side view showing an example of the jaw crusher in FIG. 1, and FIG. 3 is a perspective view showing an embodiment of the same resplit crusher. FIG. 4 is a perspective view of an example of the Beetle. 1... Raw stone hopper, 2... Jaw crusher, 3...
...Re-splitting crusher, 4...Choke feed type crusher, 5...Beetle. Applicant's agent Mr. Sato Figure 1 Figure 2

Claims (1)

[Claims] A jaw crusher that receives concrete crushed stone from a raw stone hopper, a re-split crusher that receives concrete crushed stone from the jaw crusher, a chalk feed type crusher that receives concrete crushed stone from the re-split crusher and crushes it between the crushed stones, and the chalk feed. A gravel regeneration device characterized in that a beetle that receives crushed concrete from a type crusher and crushes it under strong pressure to obtain gravel is sequentially installed.