KR101762830B1 - Apparatus for Recovering Gravels and Sands from Waste Ready-Mixed Concrete - Google Patents

Abstract

The present invention relates to an aggregate sorting and recycling apparatus for a waste ready-mixed concrete, more specifically, to effectively separate pebbles, sand and water to improve workability and to obtain high quality recycled aggregate, To an aggregate sorting and recycling apparatus for a waste ready-mixed concrete for protecting a pump from sedimented sand.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an aggregate separating and recycling apparatus for reclaimed concrete,

The present invention relates to an aggregate sorting and recycling apparatus for waste concrete, which is a construction material, and more particularly, to an apparatus for efficiently separating gravel, sand and water to improve workability and to obtain high quality recycled aggregate, To an aggregate sorting and recycling apparatus for a waste ready-mixed concrete for protecting a pump from sand deposited by a sludge tank.

Remicon is mainly composed of cement and water mixed with 80% of aggregate collected from rivers and the like. In the environment where resources are lacking, means for recycling waste remicon after use of the remicon is desperately required.

Generally, the disposal of used concrete mixers is not only wasteful but also pollutes the environment.

In recent years, measures for recycling used concrete have been actively researched, but most of them are over-installed and maintenance expenditures. In particular, the apparatus is so large that it occupies a large installation area, and it is pointed out that it is difficult to manage facilities around the plant.

As a conventional technique in which such problems have been partially improved, Korean Patent Registration No. 10-0327393 (Mar. 13, 2002) discloses an apparatus for sorting recycled aggregate of recycled concrete.

However, such a conventional aggregate sorting and recycling apparatus for waste concrete can not protect the pump from sediment deposited by the primary sludge tank, that is, sand, and it is difficult to expect smooth operation of the pump.

Korea Patent Registration No. 10-0327393 (Mar. 13, 2002) 'Apparatus for sorting recycled aggregate of waste concrete'

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for separating gravel, sand and water efficiently to improve workability and to obtain high quality recycled aggregate, And to provide an aggregate sorting and recycling apparatus for the waste ready-mixed concrete for protecting the pump from the sedimented sand.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above-mentioned object, the present invention provides a waste water treatment system comprising a waste receptacle 10; Conveyors (20) (21) for conveying selected gravel and sand; A cyclone 50 in which the pump P of the primary sludge tank 30 and the secondary sludge tank 40 are connected by the pipes 31 and 41; And a vibrating housing 60 provided between the conveying unit 10 and the conveyors 20 and 21 and coupled to the lower fixing plate 61 by a spring S to be vibrated by the upper vibrating motor M And a screen netting 62 of upwardly inclined pores and a screen netting 63 of fine pores are provided on the upper and lower sides of the vibration enclosure 60. The conveyors 20, The aggregate sorting and recycling apparatus for the waste ready mixer disposed above and below the other ends of the screen nettings 62 and 63 protects the pump P from the sand settled in the primary sludge tank 30, (70), wherein the protection portion (70) extends upward from an inner bottom surface of the primary sludge tank (30), the pump (P) is housed inward, and the upper portion A casing 71 in which a hollow 71a is formed; A cover 72 covering the hollow 71a; And an opening and closing means 73 for opening and closing the cover 72 in accordance with a level of the water accommodated in the primary sludge tank 30. The opening and closing means 73 is disposed in the interior of the primary sludge tank 30, A pair of guide bars (74) formed on both sides of the casing (71) and extending upward from the bottom surface; A float 75 connected to the top of the cover 72; And a pair of connecting members (76) for connecting the cover (72) to the pair of guide bars (74) so as to be able to move up and down, and the float (75) And the cover (72) is configured to open and close the hollow (71a) while being raised and lowered according to a change in the water level of the concrete mixer (30).

According to the present invention, it is possible to effectively separate gravel, sand and water, thereby improving the workability and obtaining a high-quality recycled aggregate.

In addition, since the pump can be protected from the sand settled by the primary sludge tank, it is possible to prevent failure of the pump and to protect the pump from being driven smoothly.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a structural view showing an apparatus for sorting and recycling aggregate of waste concrete according to the present invention.
FIG. 2 is a perspective view showing a vibration enclosure in an aggregate sorting and recycling apparatus for waste concrete according to the present invention. FIG.
FIG. 3 is a partially enlarged cross-sectional view showing a state in which a protective part is provided in an aggregate sorting and recycling apparatus of a waste ready-mixed concrete according to the present invention.
And
FIG. 4 is a state diagram showing an operation state of the protection unit in FIG. 3. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And should not be construed as limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein.

It should be understood that the embodiments according to the concept of the present invention are not limited to the particular mode of disclosure but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The present invention utilizes the same as the later-described Japanese Patent No. 0327393, and therefore all of the features of the device configuration described below can be understood as the matters described in Patent Registration No. 0327393.

However, the present invention further includes a structure for protecting the pump from the sand settled in the primary sludge tank among the structures disclosed in the above-mentioned Japanese Patent No. 0327393, and the operation thereof is further described, and this part is the most important constitutional feature .

Therefore, the device configuration, characteristics and operation relationship described below will be referred to as the contents of the above-mentioned Japanese Patent No. 0327393, and the configuration related to the main features of the present invention will be described in detail at the rear end.

The waste concrete conveyor 10, the conveyor 20 and the conveyor 20 for conveying the selected gravel and sand, the pump P of the primary sludge tank 30 and the secondary sludge tank 40 are connected to the respective pipes 31 A cyclone 50 connected between the conveyor 20 and the conveyor 20 and connected between the conveyor 20 and the conveyor 20 and connected to the lower fixing plate 61 by a spring S, And a vibration enclosure 60 which is oscillated by the motor M.

In the vibration enclosure (60), a screen net (62) of upwardly inclined pores and a screen net (63) of fine pores are installed up and down.

The conveyors (20) and (21) are disposed one above the other as the one ends of the pores and the fine pores are located below the other ends of the screen nets (62) and (63).

Level switches SW1 and SW2 are provided on the inner and lower ends of the primary sludge tank 30 so as to be electrically connected to the pump P so that the pump P is operated or stopped according to the level of the introduced water .

Reference numeral 70 denotes a gravel collecting box, 71 denotes a sand collecting box, and the vibration enclosure 60 has a structure in which it communicates with each constituent part related thereto.

The pore screen net 62 has a mesh of about 5 mm, and the screen pore 63 of the pore has a mesh of about 1 mm.

The waste ready-mixed concrete is fed into the conveying unit 10 by a conventional method and is conveyed. The waste concrete conveyed in this manner is introduced into the vibrating enclosure 60 and flows into the upper surface of the screen net 62 of pores.

At this time, the gravel among the introduced ready-mixed concrete is filtered by the screen nettle 62 of the pore, and the sand and water pass through.

The sand is filtered in the screen net 63 of the fine pores located at the lower portion of the screen nettle 62 of the pore and the water is discharged to the primary sludge tank 30.

The vibration housing 60 has a four-sided bottom surface interlocked with the four corners of the fixing plate 61 and the spring S, and is strongly rocked by the impact.

In particular, the vibration motor M used in the present invention uses a motor that vibrates in an upward diagonal direction, so that the vibration enclosure 60 is made of a synthetic resin, Direction and upward diagonal direction, the screen webs 62 and 63 of pores and micropores installed in the inside thereof also vibrate in an upward diagonal direction.

Thus, the gravel filtered by the screen netting 62 of the pores and the sand filtered by the screen netting 63 of the fine pores passing through the screen netting 62 of the pores may cause the screen nettings 62 and 63 to be inclined upward The gravel and the sand move smoothly toward the one conveyor 20 (21), because the gravel and sand act to push the gravel and sand in the proceeding direction by the vibration direction applied in the upward diagonal direction.

In the present invention, the screen nettings (62) and (63) having different mesh sizes are provided in the vibration enclosure (60) so that the gravel and sand contained in the waste ready concrete can be simultaneously screened.

In addition, the water contained in the aggregate can be easily removed by the vibration, and the screen nettings 62 and 63 are formed so as to be upwardly inclined, so that the dewatering effect can be improved.

That is, according to the present invention, since the upward inclination angle and the vibration of the screen nettings 62 and 63 work together to provide an excellent dewatering effect, the water content of the aggregate is extremely lowered, thereby providing a high quality recycled aggregate.

The sand is not passed at once through the pore screen netting 62 but passes all the way through to the one conveyor 20 (21) while being transported along with the gravel and easily lowered by the vibration.

The jasmine and sand conveyed in this manner are simultaneously dropped into the conveyors 20 and 21 connected to the jam and sand collecting compartments 70 and 71 provided at one side by the driving of the conveyors 20 and 21, Respectively.

In the present invention, since the conveyors (20) and (21) are arranged up and down, the picked and transported gravel and sand are simultaneously acquired and recovered, thereby improving the workability and drastically reducing the facility area.

On the other hand, the water containing the sludge flowing into the primary sludge tank 30 is transferred to the cyclone 50 through the piping 31 by the operation of the pump M, and the transferred water is transferred to the upper piping 41 To the secondary sludge tank 40 through the second sludge tank 40.

At this time, the sand remaining in the water is dropped and re-introduced into the vibration enclosure 60, whereby the amount of recycled aggregate can be maximized.

Of course, although the sand re-collecting means using the cyclone 50 has a general technology related to the present invention, the present invention operates the pump P only when necessary.

That is, the present invention constitutes a level switch SW1 (SW2) electrically connected to the pump (P) on the inner wall and the bottom of the primary sludge tank (30). In the primary sludge tank When the water containing the sludge reaches the appropriate water level, the upper level switch SW1 senses it and operates the pump P to transfer the water to the upper cyclone 50. When the water level becomes lower and approaches the floor, The switch SW2 senses this and stops the pump P from operating.

As a result, waste of power and manpower can be reduced as compared with the case where the pump is continuously operated or the pump is manually operated or stopped, and improvement in workability can be expected.

In the present invention, as shown in FIG. 3 to FIG. 4, the protection unit 70 protects the pump P from sediment deposited in the primary sludge tank 30 Configuration is further implemented.

The protection unit 70 prevents a failure of the pump P, which may be caused by the deposition of the sand introduced into the primary sludge tank 30, and the deterioration of the water discharge performance.

The protection unit 70 includes a casing 71 extending upward from an inner bottom surface of the primary sludge tank 30 and containing the pump P inwardly and having a hollow 71a formed thereon, A cover 72 covering the hollow 71a and opening and closing means 73 for opening and closing the cover 72 according to a water level received in the primary sludge tank 30.

The casing (71) is provided on the inner bottom surface of the primary sludge tank (30) so that the pump (P) can be received inward while the bottom is opened.

The casing 71 prevents malfunction or the like of the pump P, which may be generated while the sand deposited in the primary sludge tank 30 is accumulated around the pump P, together with an operation error.

The hollow 71a allows the water contained in the primary sludge tank 30 to be introduced and discharged to the outside as the pump P is driven.

The cover 72 is seated on the upper portion of the opened casing 71 to seal the hollow 71a.

The cover 72 maintains the closed state when the water level of the primary sludge tank 30 is lower than the height of the casing 71. When the water level of the primary sludge tank 30 reaches the height of the casing 71 The opening / closing means 73 is opened and closed.

This is because the sand deposited on the bottom surface of the primary sludge tank 30 can not be easily introduced into the casing 71 while the water level of the primary sludge tank 30 reaches a certain level So that the water can be discharged to the outside while being opened.

The opening and closing means 73 includes a pair of guide bars 74 extending upward from the inner bottom surface of the primary sludge tank 30 and disposed on both sides of the casing 71, And a pair of connecting members 76 connecting the cover 72 to the pair of guide bars 74 so as to be movable upward and downward.

The float 75 is made of a floating material including styrofoam or the like and is lifted or lowered according to a change in the water level of the primary sludge tank 30 so that the cover 72 opens and closes the hollow 71a .

The cover 72 preferably has such a weight as to float together with the float 75 as it floats. In other words, it is preferable that the float 75 has a floating force enough to lift the cover 72 in accordance with the float.

The pair of connecting members 76 protrude from both sides of the cover 72 and are coupled to the guide bar 74 in such a manner that they can be raised and lowered while a guide hole 76a penetrating in the vertical direction is formed.

Preferably, the pair of guide bars 74 are formed with a separation preventing protrusion 77 for preventing the connection member 76 from separating from the upper portion.

The separation preventing protrusion 77 prevents the connection member 76 from being separated from the pair of guide bars 74 due to floating or lifting of the float 75.

Accordingly, when the water level of the primary sludge tank 30 becomes equal to or higher than a predetermined level, the cover 72 can keep the gap between the casing 71 and the casing 71 constant.

The casing 71 may have a plurality of inlet holes 71b communicating with the inside along the upper periphery thereof.

The inlet hole 71b enables the water contained in the primary sludge tank 30 to be drawn into the casing 71 when the cover 72 is opened later.

In the present invention, air supplied from the outside is injected into the casing (71) so that sand deposited on the casing (71) is scattered, while sand driven with water by the pump (P) And an air jetting unit 80 for discharging the air to the outside through the air pump P.

The air injecting unit 80 may include an air supply pipe 81 having one end connected to the casing 71 and the other end supplied with air from the outside.

An air supply device (not shown) including a compressor or the like is connected to the other end of the air supply pipe 81 and is driven together with the pump P.

Accordingly, the present invention can stably protect the pump P from the sands settled in the primary sludge tank 30, as well as effectively discharge the sand introduced into the casing 71, 50 to be separated and discharged.

10: Waste concrete conveyance 20,21: Conveyor
30: primary sludge tank 31: piping
40: secondary sludge tank 41: piping
50: Cyclone 60: Vibrating enclosure
61: Fixing plate 62: Screen net of pores
63: Screen screen of fine holes 70: Protective part
71: casing 72: cover
73: opening / closing means 74: guide bar
75: float 76: connecting member
77: Release protrusion S: Spring
M: Vibration motor SW1, SW2: Level switch

Claims (1)

Waste concrete conveyor 10;
Conveyors (20) (21) for conveying selected gravel and sand;
A cyclone 50 in which the pump P of the primary sludge tank 30 and the secondary sludge tank 40 are connected by the pipes 31 and 41; And
And a vibration enclosure 60 provided between the transmission unit 10 and the conveyors 20 and 21 and interlocked with the lower fixed plate 61 by the spring S to be vibrated by the upper vibration motor M and,
In the vibration housing 60,
A screen net 62 of upwardly inclined pores and a screen net 63 of fine pores are installed up and down,
The conveyors (20) and (21)
And an aggregate sorting and recycling device for a waste ready-mix concrete, one end of which is disposed above and below the other end of the screen net 62 (63)
Further comprising a protection unit (70) for protecting the pump (P) from sand deposited in the primary sludge tank (30) to prevent the pump (P)
The protection unit (70)
The pump (P) is extended inward from the inner bottom surface of the primary sludge tank (30). Water contained in the primary sludge tank (30) flows into the upper portion of the pump A casing 71 formed with a hollow 71a to be discharged to the outside according to driving of the pump P;
A cover 72 covering the hollow 71a; And
And an opening / closing means (73) for opening / closing the cover (72) according to a water level received in the primary sludge tank (30)
The casing (71)
The pump P is prevented from malfunctioning or malfunctioning which may occur due to the accumulation of sand deposited in the primary sludge tank 30 around the pump P and a plurality of inlets A hole 71b is formed,
The cover (72)
When the water level of the primary sludge tank 30 is lower than the height of the casing 71 and the water level of the primary sludge tank 30 is higher than the height of the casing 71, Is opened by opening and closing of the opening / closing means (73)
The opening / closing means (73)
A pair of guide bars 74 extending upward from the inner bottom surface of the primary sludge tank 30 and disposed on both sides of the casing 71;
A float 75 connected to the top of the cover 72; And
And a pair of connecting members (76) for connecting the cover (72) to the pair of guide bars (74) so as to be able to move up and down,
The float (75)
The cover 72 is moved up and down according to a change in the water level of the primary sludge tank 30 to open and close the hollow 71a,
The pair of connecting members (76)
A guide hole 76a protruding from both sides of the cover 72 and penetrating in the up and down direction is formed and connected to the guide bar 74 so as to be raised and lowered,
The pair of guide bars (74)
Preventing protrusion 77 for preventing the connection member 76 from disengaging from the upper portion,
Air supplied from the outside is injected into the casing 71 so as to allow the sand deposited in the casing 71 to be scattered and the air to be discharged to the outside along with the water as the pump P is driven Further comprising a yarn (80)
The air jetting section (80)
And an air supply pipe (81) having one end connected to the casing (71) and the other end supplied with air from the outside.

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