JP5137233B2 - Containment tank for depositing ready-mixed concrete waste - Google Patents

Description

  The present invention is a waste for dehydrating and solidifying waste such as ready-mixed concrete and / or ready-mixed concrete containing cleaning water remaining in a mixer truck in a storage tank, and removing the solidified ready-mixed concrete from the storage tank. It is related with the storage tank which accumulates the ready-mixed concrete waste provided with the press and cancellation | release means with a drain gate.

  In recent years, ready-mixed concrete used at construction sites is often transported by mixer trucks, and surplus ready-to-use concrete that could not be used at such construction sites is transported to specific locations such as treatment facilities and discarded. ing. Further, the ready-mixed concrete adhering to the drum inner wall of the mixer truck is cleaned by a cleaning device, and the ready-mixed concrete containing a large amount of cleaning water is similarly discharged from the drum and discarded. Excess ready-mixed concrete can be reused by adding it to other ready-mixed concrete, but the available time is limited, and ready-mixed concrete containing a large amount of washing water is reused as ready-mixed concrete However, there are limitations due to the separation of aggregates and high moisture content, and many of them are discarded as industrial waste.

Therefore, the present applicant who has found that when solidified concrete (hereinafter referred to as sludge) is dried, a hardness of about 8N is obtained and can be crushed as an appropriate debris, based on this knowledge. First, an application has been filed for an industrial waste treatment apparatus and an industrial waste treatment method (Japanese Patent Laid-Open No. 2001-340839).
The invention of the application is as follows.
First, the mixer truck discharges surplus concrete to the ground, and the drum is washed with a washing device. The turbid water discharged from the drum is separated into sand and gravel by an aggregate classifier, and then the turbid water containing fine sand and cement, which is filtered water, is injected into the fine sand collecting machine to form fine sand. The precipitate is separated. The separated fine sand is transported to BP (Batcher Plant) that produces new ready-mixed concrete together with the previously separated sand and gravel. Moreover, the sludge water discharged | emitted here is poured into the stirring water tank, and finally a cake is formed with a sludge dehydrator. At that time, the supernatant water separated from the sludge is pumped up to the supernatant water tank and is used as washing water for the mixer truck or transported to B / P and reused as kneading water.
On the other hand, the cake taken out from the sludge dewatering machine is kneaded with surplus concrete while soft, and the dried solidified solidified material is crushed with a crusher to produce a recycled roadbed material, and the above We have devised a processing method for producing a recycled roadbed material by crushing a solidified product obtained by drying and solidifying a cake and a solidified product of surplus raw concrete previously dried and solidified by a crusher.

Furthermore, the present applicant is a dehydration step of dewatering the ready-mixed concrete containing cleaning water discharged from the washing step, a dehydration step of dewatering the ready-mixed concrete discharged from the washing step, and dewatering in the dehydration step, An industrial waste treatment method characterized by comprising a crushing step for crushing solidified concrete, and a step of reusing the crushed material produced in the crushing step as a recycled roadbed material. As a process, it is formed from a storage tank that stores cleaning wastewater containing raw concrete, a vibrator attached to the storage tank, and a square gate pipe that is provided in the storage tank and stacked with a gap serving as a drainage port. We have developed a concrete dewatering device characterized by comprising a drain gate.
JP 2001-340839 A JP 2004-0666140 A

  However, in the dewatering step in the above-described conventional industrial waste treatment method, it is necessary to pass a number of large-scale devices such as a kneader, an aggregate classifier, a fine sand recovery machine, a stirring device, and a sludge dewatering device. The separation and dehydration work is difficult, and these devices cannot be easily relocated, and cleaning wastewater and sludge must be transported to the place where the devices are located. There was a problem of becoming.

  In addition, in a storage tank that has a simple structure, is easy to relocate, and has a concrete dewatering device capable of sufficient dewatering of concrete, the storage tank contains a large amount of water discharged into the storage tank. Moisture was quickly dehydrated from the concrete waste and dried and solidified to complete the sludge. Thereafter, it is necessary to remove the accumulated sludge from the storage tank. At that time, in order to take out the sludge from the storage tank, the gate must be quickly opened. However, the gate is firmly attached to the sludge inside the gate, and in order to separate the sludge from the gate, the pressing means holding the gate is released. Since it is necessary to form it so as to withstand, it is considered to be strong, and the work of releasing it has been complicated.

  The present invention solves the above-mentioned problems, and makes it easy to separate a drainage gate from sludge in a raw concrete waste storage tank serving as a dewatering device. An object of the present invention is to provide a storage tank for depositing ready-mixed concrete waste, which is characterized by being applied.

  The storage tank for storing ready-mixed concrete waste according to the present invention stores excess ready-mixed concrete and / or ready-mixed concrete waste containing cleaning water, which is composed of a disk-shaped drain gate provided with a bottom plate, a side wall, and a drain port. In the tank, the drainage gate is formed so as to be movable up and down along the left and right columns formed at the end of the side wall, and the column allows the drainage gate to be translated in the front-rear direction. It is characterized by a storage tank for depositing ready-mixed concrete waste, which is provided with a pressing / releasing device for the drainage gate.

  The drainage gate has a drainage port extending in the longitudinal direction, and the drainage port is characterized by a storage tank for depositing ready-mixed concrete waste formed at appropriate intervals in the vertical direction.

  Furthermore, the container is characterized by depositing ready-mixed concrete waste as a waste dewatering means by providing a vibration device on either or both of the side wall and the drain gate.

In addition, the waste is a storage tank for depositing ready-mixed concrete waste, which is surplus ready-mixed concrete and / or ready-mixed concrete containing clean water adhering to the drum inner wall of the mixer truck and cleaning water generated by cleaning it. Features.

  Further, the container is characterized in that a storage tank for depositing ready-mixed concrete waste with the pressing / releasing device as an eccentric cam device is provided.

  In addition, the storage tank is characterized in that the ready-mixed concrete waste is deposited using the pressing / releasing device as a wedge device.

  Furthermore, the pressing / releasing device is characterized by a storage tank for depositing ready-mixed concrete waste using an eccentric cam device and a wedge device in combination.

  The present invention, in the storage tank formed with a strong wall that can withstand the internal pressure generated to deposit the flowing ready-mixed concrete waste, the sludge that has been stacked and dehydrated and solidified at a predetermined height is taken out from the storage tank. Means for supporting the drainage gate or the drainage gate by providing a pressing / releasing device that enables the drainage gate to be translated in the front-rear direction when opening the drainage gate that also serves as a wall for that purpose. It is now possible to separate the contact state between the sludge and the drainage gate without dismantling.

  Further, by using an eccentric cam device and / or a wedge device as the pressing / releasing device, pressing means necessary as a wall that can withstand internal pressure from the sludge side by a simple operation, and a releasing means for separating the sludge and the drain gate Can be obtained with a single device.

  Furthermore, by forming a drain outlet in the drain gate and installing a vibration device on either or both of the drain gate and the side wall as necessary, the ready-mixed concrete can be dehydrated earlier and the concrete solidifies faster. Became possible.

  Hereinafter, the present invention will be described along examples.

  FIG. 1 shows a storage tank according to the present invention. The storage tank 1 is composed of a bottom plate 2, a side wall 3, a column 4 erected at a corner, a plate-shaped drain gate 5 and a pressing / releasing device 9. To do.

  The bottom plate 2 is formed by placing concrete so that the surface side is a smooth surface, and a side wall 3 for forming a rectangular container is erected from the peripheral side, and structural bodies are provided at both front and rear ends thereof. The support column 4 is also erected and also serves as a guide serving as a movement guide means for enabling the reinforcement and the vertical movement of the drainage gate.

  The side walls 3 can be erected on both side surfaces or rear side surfaces, but in this embodiment, the side walls 3 are provided on both side surfaces. It is erected so as to be supported by the pillars 4 at the corners.

  The support column 4 shown in the plan view of FIG. 2 is a guide for the vertical movement of the reinforcing column 4a as a structure raised from the foundation and the drainage gate 5 integrally attached to the reinforcing column 4a. It is formed by guide pillars 4b such as I-shaped steel and H-shaped steel provided with grooves 6. In FIG. 1, the reinforcing support 4a itself also serves as a guide support having a guide groove. In FIG. 2, the guide column 4 b is separately fixed on the front surface of the reinforcing column 4 a, but in FIG. 1, it has a strength as a structure and is configured as one member that can also serve as a guide.

  FIG. 3 shows a side view of the storage tank 1 corresponding to FIG. 2, and the left and right ends of the drainage gate 5 are inserted along the guide groove 6 into the guide groove 6 of the guide column 4b as shown by dotted lines. The drain gate 5 is housed in a loosely fitted state so as to be movable in the vertical direction.

  In this embodiment, the drain gates 5 are provided at two locations on the front side of the storage tank 1 and the rear side opposite to the storage tub 1 so as to facilitate the removal of sludge. Good. In that case, the rear side has the same structure as the side wall 3.

  The drainage gate 5 is formed by integrally stacking long rectangular pipes 7 in the vertical direction, and the drainage means 8 is formed by providing a minute gap between the square pipes 7. The drainage means 8 only needs to have a gap between the square pipes 7, and can be formed by appropriate means by providing a spacer or a notch. Further, the member itself may have a drainage function.

  Both ends of the drainage gate 5 enter the guide grooves 6 of the columns 4 formed at the left and right corners of the storage tank 1, but the thickness of the drainage gate 5 is larger than the groove width between the flanges of the guide groove 6. It is formed as a thin thickness. In addition, after the drain gate 5 is installed in the guide groove 6, a removable drain gate retaining device having an appropriate shape can be provided on the upper side of the drain gate 5 of the guide groove 6. Furthermore, the drainage gate 5 can be lifted by providing a latching means for lifting at the center upper end of the drainage gate 5.

  As shown in FIGS. 3 and 4, the drainage gate 5 is movable rearward on the outer flange 6b on the front side of either the reinforcing column 4a as shown in FIG. 1 or the guide column 4b as shown in FIG. And the pressing means that can withstand the internal pressure from the stored waste and the releasing means that becomes sludge in the storage tank and allows the drain gate 5 firmly attached to the sludge to move forward. (Hereinafter referred to as a pressing / releasing device 9).

  As shown in FIG. 4, the pressing / releasing device 9 includes a rotating shaft 10, an eccentric cam 11 integrally attached to the rotating shaft 10, and a handle 12. Since the pressure applied to the drain gate 5 is supported from the outside, the pressing / releasing device 9 of this embodiment is arranged so that the four locations of the drain gate 5 can be pressed from the outside. The arrangement location and the number of installations can be appropriately selected as necessary. The rotary shaft 10 is fixed to the support column 4 so as to be rotatable in a cylinder fixed to the flange 6b.

  The handle 12 is formed integrally with the rotary shaft 10 and the eccentric cam 11 and is fixed on the side close to the rotary shaft 10 and is positioned upward in a direction substantially parallel to the column 4 shown in FIG. 4 (FIG. 4). The position indicated by a solid line) is such that the peripheral edge of the eccentric cam 11 penetrates deeply into the guide groove 6 from the rotary shaft 10 and acts as a pressing means for pressing the drain gate 5 against the inner flange 6a side of the guide groove 6. 12 is rotated to the lower side shown by the dotted line position in FIG. 4 to move the peripheral edge of the eccentric cam 11 to the outer flange 6b side in the direction away from the drainage gate 5 (position indicated by the dotted line in FIG. 4). The release gate 5 has an action as a release means that enables the gap to be separated from the sludge to be formed in the guide groove 6. The handle 12 and the eccentric cam 11 need only be capable of acting as a unit, and the handle 12 protrudes integrally from a part of the peripheral edge of the eccentric cam 11 shown in FIGS. 5 (a) and 5 (b). As shown in FIG. 1, various forms such as a configuration in which the handle 12 is fixed to the side surface of the eccentric cam 11 are conceivable.

  By setting the handle 12 to the lower side position shown by the dotted line in FIG. 4, the margin of the eccentric cam 11 is brought closer to the outer flange 6b side to create a margin space in the guide groove 6 between the flanges 6a and 6b. When the drain gate 5 is inserted and dropped into the groove 6 from the upper side to form the front wall of the storage tank 1, and then the handle 12 is rotated from the position shown by the dotted line to the position shown by the solid line on the upper side, the eccentric cam 11 The drainage gate 5 is pressed toward the inner flange 6a by the peripheral edge of the drainage gate 5 so that the drainage gate 5 is firmly fixed.

  In the above state, the flow of surplus ready concrete or / and ready concrete adhering to the drum inner wall of the mixer truck and ready-mixed concrete containing cleaning water generated by cleaning the same are contained in the storage tank 1 using the mixer truck or the like. Stored inside.

  When the above-mentioned ready-mixed concrete is deposited in the storage tank 1, the moisture contained in the ready-mixed concrete is discharged to the outside from the drainage means 8 formed in the drain gate 5, in this embodiment, the gap between the square pipes 7. Will be. Natural drainage may be used, but the ready-mixed concrete is vibrated positively by providing a vibration device 13 on either or both of the drainage gate 5 and the side wall 3 (in FIG. It may be the front wall side), and can act as a dehydrating means, so that dehydration can be achieved at an early stage.

  The ready-mixed concrete is stored in the storage tank 1, dehydrated and solidified, and the concrete layer laminated and solidified is formed in the storage tank 1 by repeating them several times. When carrying out the said sludge from the storage tank 1, it becomes an operation | work which scrapes and peels off sludge with a bulldozer etc. as the carrying out operation, and scrapes the block-shaped concrete from the storage tank 1. As a pre-process for operating the bulldozer and the like, the drainage gate 5 is lifted and moved upward along the guide groove 6, but the sludge in the storage tank 1 and the drainage gate 5 are strengthened as the mortar solidifies. It is attached.

  In order to separate the drainage gate 5 from the sludge, the peripheral edge of the eccentric cam 11 is removed from the presser of the drainage gate 5 by rotating the handle 12 in the pressing / releasing device 9 from the position of the solid line in FIG. It will move to the outer flange 6b side (position shown by the dotted line in FIG. 4). In the above state, the drain gate 5 is blown or vibrated or vibration is applied by the vibration device 13, whereby the drain gate 5 and the sludge are easily separated, and the drain gate 5 can be lifted upward.

  The lifting can be performed by various means such as a lifting means such as a mobile block or a chain block provided on the upper part of the steel frame. The frame can be used as a lifting means by extending the above-mentioned support column 4 upward to form a frame.

  FIG. 6 shows a plan view of the one along the perspective view of FIG. An H-shaped steel reinforcing frame member 14 is fixed to both ends of the drain gate 5, and the reinforcing frame member 14 is configured to move in the vertical direction in the guide groove 6 of the column 4. The reinforcing frame member 14 serves to smoothly reinforce the end portion of the drainage gate 5 and to move in the vertical direction, and the surface of the front flange 14a serves as a contact surface of the peripheral edge of the eccentric cam 11 of the pressing / releasing device. Thus, damage due to the eccentric cam 11 at the end of the drainage gate 5 can be prevented.

  FIG. 7 shows a pressing / releasing device in which the pressing state of the drain gate 5 toward the inside of the storage tank 1 is made stronger in addition to those of the first and second embodiments. In the first and second embodiments, the drainage gate 5 is held in the pressed state only by the eccentric cam 11 of the pressing / releasing device 9, but the drainage gate 5 and the eccentric cam 11 are formed by the ready-mixed concrete stored in the storage tank 1. Since a large pressure acts on the eccentric cam 11, a large internal pressure is concentrated on the eccentric cam 11, and it is necessary to withstand it. In order to avoid taking all of the load only by the eccentric cam 11, the inner surface of the outer flange 6 b of the column 4 in the guide groove 6 and the front surface of the end of the drain gate 5 or the front flange 14 a of the reinforcing frame member 14 are arranged. A reinforcing wedge 15 is inserted therebetween to distribute the load as a pressure support member.

  The reinforcing wedge 15 is formed with a through hole 6d in a part of the web 6c of the support column 4, and is inserted into the drain gate 5 side from the through hole 6d, whereby a gap is formed between the outer flange 6b and the front surface of the drain gate end. Can be arranged. By making the width of the reinforcing wedge 15 match the gap, the one inserted by hitting from the outside can stay at the location. In order to relieve the pressure load on the eccentric cam 11, it is desirable to provide the reinforcing wedge 15 at a position close to the top and bottom as shown by the arrows in FIG. As described above, the third embodiment uses the eccentric cam device and the wedge device together as the pressing / releasing device, but only the reinforcing wedge 15 is used as the pressing / releasing device without using the eccentric cam device. Is also possible.

  The reinforcing wedge 15 can be easily removed by striking from the drain gate 5 side. In order to prevent the driven reinforcing wedge 15 from falling from a predetermined position, a protrusion 16 is provided on the flange 14a as necessary, and an upper position of the protrusion 16 is used as an insertion point, thereby providing a fall prevention means.

  FIG. 8 shows another embodiment of the pressing / releasing device, in which the drain gate 5 ′ inserted in the guide groove 6 ′ of the column 4 ′ is pressed against the inner flange 6 a ′ side which is the inner side of the storage tank. In addition, the wedge device is a pressing / releasing device 9 'as a releasing means for separating.

  The wedge device has an L-shaped cross section and is inserted into the guide groove 6 '. As shown in the figure, it becomes easier to insert a tapered surface. The wedge device includes an insertion portion 17 and a striking portion 18 to be pushed in. After inserting the insertion portion 17 into the guide groove 6 ′, the striking portion 18 is fixed to the guide groove 6 ′ by striking from the striking surface 19. be able to. The removal can be performed by striking the striking surface 20 opposite to the striking surface 19. Similar to the reinforcing wedges 15 of Examples 1 to 3 and Example 3 only, the pressing / releasing device 9 ′ is efficiently arranged at appropriate places to support the pressure from the inside applied to the drain gate 5 ′. If necessary, the wedge device fall prevention means can be provided as in the third embodiment and held at a predetermined position. Separation of the sludge solidified after deposition and the drain gate 5 'is the same as in Examples 1 to 3.

The schematic perspective view of the storage tank of this invention. The top view which showed the frame structure of the storage tank of this invention. The side view of the storage tank of this invention. The sectional side view of the press / release apparatus in the storage tank of this invention. (A) of the Example which shows the relationship between a handle | steering-wheel and an eccentric cam is a side view, (b) is a front view. The plane sectional view of other examples of the drainage gate edge part in the storage tank of the present invention. The plane sectional view of other examples of the press / release device in the storage tank of the present invention. The plane sectional view of other examples of the press / release device in the storage tank of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank 2 Bottom plate 3 Side wall 4, 4 'Support column 5 Drain gate 6, 6' Guide groove 7 Square pipe 8 Drain means 9, 9 'Pressing / release device 10 Rotating shaft 11 Eccentric cam 12 Handle 13 Vibration device 14 Reinforcement frame member 15 Reinforcing wedge 16 Protrusion 17 Inserting portion 18 Strike portion 19, 20 Strike surface

Claims (7)

  In a storage tank for depositing surplus ready concrete and / or ready concrete waste containing cleaning water comprising a bottom drain, a side wall and a drainage gate provided with a drainage port, the right and left formed on the end of the side wall It is formed so as to be movable in the vertical direction along the support column, and the support column is provided with a waste and drain gate pressing / releasing device that can translate the drain gate in the front-rear direction. A storage tank for depositing ready-mixed concrete waste.   2. The container for depositing ready-mixed concrete waste according to claim 1, wherein the drainage gate has a drainage port along a longitudinal direction, and the drainage port is formed at appropriate positions at predetermined intervals in the vertical direction. Tank.   The storage tank for depositing ready-mixed concrete waste according to claim 1 or 2, wherein a wastewater dehydrating means is provided by providing a vibration device on either or both of the side wall and the drain gate. Waste, according to claim 1 to 3, characterized in that a ready-mixed concrete comprising a wash water generated by washing with raw concrete and it adheres to the drum inner wall of surplus raw concrete or / and mixer truck Containment tank for storing ready-mixed concrete waste.   5. The storage tank for depositing ready-mixed concrete waste according to claim 1, wherein the pressing / releasing device is an eccentric cam device.   5. The storage tank for depositing ready-mixed concrete waste according to claim 1, wherein the pressing / releasing device is a wedge device. 5. The container for depositing ready-mixed concrete waste according to claim 1, wherein an eccentric cam device and a wedge device are used in combination as the pressing / releasing device.

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