JPH0137971B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for crushing and drying water-containing lumps, specifically, for crushing and drying water-containing lumps such as water-containing soil lumps generated in aggregate plants or water purification plants, and garbage lumps in garbage incineration plants. Regarding the device.

When recycling hydrated lumps such as hydrated soil lumps and garbage lumps, recycling costs such as drying or burning can often be reduced by crushing, dehydrating, and drying the hydrated lumps. In other words, water-containing soil lumps, such as sludge generated in aggregate manufacturing plants, are dehydrated using a filter press, and the sludge is recycled into raw materials for artificial synthetic soil, china clay, etc., and the energy of the waste heat equipment of the dryer used at that time is If you try to use water-containing soil, if you crush the water-containing soil to increase the porosity between particles and dry it at the same time, the porosity of the soil will increase and the moisture content will decrease, making it necessary to use auxiliary fuel. This makes it possible to streamline the recycling process, save energy, and reduce costs. In addition, if the waste nodules brought into the waste incineration site are dehydrated and dried using the energy of waste hot air from the incinerator and crushed at the same time, the porosity of the waste nodules will increase and the moisture content will decrease, similar to the above-mentioned water-containing soil lumps. It eliminates the need to use auxiliary fuel, increases combustion efficiency during incineration, and achieves the goal of energy conservation.

The present invention aims to reduce costs and recycle energy by simultaneously crushing and drying the water-containing nodules when recycling the water-containing nodules as described above and effectively utilizing the energy of waste hot air. In order to measure the It collided with a conical cap fixed to the shaft head, sheared and fractured, and fell, and was then blown off by a number of beating rods fixed radially to the shaft of the rotating shaft, and was installed on the inner surface of the frame. It is made to collide with multiple stages of repulsion plates to beat, crush and fall, while at the same time as the above-mentioned shear crushing, hot air or hot air that has been drained by heat exchange and drained due to temperature drop is blown from one of the inner surfaces of the frame. By discharging from the other side of the inner surface, the porosity is increased by crushing the water-containing lumps, and the heat transfer coefficient is improved by increasing the surface area due to crushing, thereby saving energy.

Next, an embodiment of the apparatus for crushing and drying hydrous nodules according to the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 show the patent number according to the present invention.
As in the invention of No. 984539, a first embodiment is shown which is applicable to the case where, when synthetic synthetic soil is synthesized from sludge generated in an aggregate plant, the sludge is crushed and simultaneously dried using waste heat. Reference numeral 1 denotes an upright rectangular cylindrical frame in which crushing and drying of water-containing nodules are performed. A bucket elevator 2 for introducing water-containing nodules from above the frame 1;
A conveyor 3 and a chute 4 are provided. Input port 5 for inputting hydrated lumps in the center of the upper end of the frame 1
An endless belt-shaped collision plate 6 with blades is provided on the inner surface of the input port 5 in order to scratch and shear the hydrated aggregates while preventing the hydrated aggregates from adhering. The impingement plate 6 can be of any shape suitable for shearing and crushing the hydrous nodules.

Reference numeral 10 denotes a rotating shaft, which stands upright in the center of the frame 1 in the form of a column, with the upper end of the shaft bearing a bearing 13 attached to a support beam 11 fixed to the frame, and the lower end attached to a lower support base 12 fixed to the foundation. , 14, and can be rotated by a drive device (not shown). A conical cap is attached to the shaft head of the rotating shaft 10 directly or via a spring 16, and a large number of beating rods 17 are mounted radially in multiple stages so as to face slightly downward. is fixed. The upper surface of the conical cap 15, like the collision plate 6, is also shaped to be suitable for shearing and crushing water-containing nodules. A plurality of repulsion plates 18 are provided on the four inner surfaces of the rectangular cylindrical frame 1 in correspondence with the beating rods 17.
is mounted so as to be able to vibrate, for example, via a coil spring with a large amplitude, so as to prevent the adhesion of crushed particles.

Reference numeral 20 denotes a plurality of hot air nozzles for blowing hot air inward from one side of the rectangular cylindrical frame 1, and the hot air nozzles are installed inside a waste hot air duct 21 arranged along the outside of the frame 1. The air pipe 22 is connected to a blower (not shown). Air is forced through the air pipe 22 by a blower, heated and dried by heat exchange with waste hot air, and blown through the hot air nozzle 20. Reference numeral 23 denotes an outlet for discharging the humid air in the frame 1, which is provided on the other side of the frame, and the humid air is returned to the waste hot air duct 21.
It is designed to merge with the waste hot air downstream of the

Although the above-mentioned body is exemplified as having a rectangular cylinder shape in this embodiment, it may be of any other shape such as a cylinder that can avoid the accumulation of fine powder at the four corners.

The lower end of the rotating shaft 10 is covered with a mudguard cover 24 fixed on the lower support 12.
The lower support base 12 is provided with a drop port 25 appropriately around the lower end of the mudguard cover 24, and a chute (not shown) is provided below the drop port 25.

Next, the operation of the first embodiment of the present invention will be explained. The water-containing lumps to be crushed and dried are sequentially transferred to bucket elevator 2, conveyor 3 and chute 4.
First, the collision plate 6 provided on the inner surface of the input port and/or the conical cap 15 attached to the shaft head of the rotating shaft 10
collides with the collision plate 6 and or the conical cap 1
5, it is sheared and crushed to some extent and falls downward. The fallen water-containing small lumps, which have been sheared and crushed to a certain extent, are blown off and crushed by the beating rods 17 radially fixed to the shaft of the rotating shaft 10, and are crushed by a repulsion plate provided on the inner surface of the frame 1. 18 and are repulsed, and the small lumps fall down one by one while being beaten and crushed by repeatedly moving back and forth between the beating rod and the repulsion plate. While the water-containing nodules are being crushed and floating and staying in the frame 1 while moving freely, the hot air blown from the hot air nozzle 20 is crushed inside the frame by the rotation of the beating rod 17 fixed to the rotating shaft 10. While being stirred, the water-containing mass is heated by dry hot air and dried to some extent. The small lumps that have fallen to the bottom fall into a chute through a drop opening 25 provided in the lower support 12 of the rotating shaft 10, and are sent to the next location via the chute.

The higher the rotation speed of the beating rod 17 fixed to the rotating shaft 10, the greater the beating and crushing effect.
The hydrated nodules fall while colliding with the collision plate 6, the conical cap 15, the beating rod 17, the repulsion plate 18, etc. in sequence until they reach the bottom from the input port 5. Due to the repeated movement up and down, back and forth, and left and right, the residence time is extended to some extent and drying efficiency is improved. It is necessary to select an appropriate rotational speed that satisfies both the drying and crushing purposes to some extent and the corresponding shape of each part within the frame.

FIGS. 3 and 4 show a second embodiment suitable for crushing and drying garbage lumps brought into a garbage incinerator using the waste heat of the incinerator. The inside of the frame 1 is similar to the first embodiment shown in FIG. A frame 30 is provided in the incinerator bit 31, and a discharge hopper 32 and a chute 33 are provided therein, so that crushed small pieces are discharged from below the frame 1 into the bit 31. . The small lumps in the pit 31 are thrown into the top of the incinerator by the crane of the incinerator. The upper part of the frame 1 is set at a height that makes it easy for a dump truck to be loaded in, and a receiving hopper 34 is provided. It can also be made to open and close. According to the second embodiment of the present invention, garbage nodules that are tightly tied or packed in bags are beaten and
Since the nodules are crushed and dried by the waste hot air, they are ignited and combusted, and the combustion furnace can save energy.

The apparatus for crushing and drying water-containing lumps shown in the first and second embodiments described above can also be applied by adjusting the boundary conditions when drying and dewatering water-containing sludge in sewage treatment and the like.

According to the present invention, if the dehydration rate of the hydrated nodules is 5~
Even if the amount is as low as 10%, it is possible to reduce the cost of processing water-containing nodules by recycling waste heat, streamlining the next process, and reducing disposal costs. When you think about it, the economic effects are extremely large.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional front view of a first embodiment of the apparatus for crushing and drying hydrous nodules according to the present invention, FIG. 2 is a cross-sectional plan view taken along the - line in FIG. 1, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a diagrammatic plan view of FIG. 3; FIG. 4 is a schematic cross-sectional front view of the example; 1...Structure, 2...Bucket elevator, 3...
...Conveyor, 4...Chute, 5...Input port, 6
... Collision plate, 10 ... Rotating shaft, 11 ... Support beam,
12... Lower support stand, 15... Conical crown cap, 17...
... Beating rod, 18 ... Repulsion plate, 20 ... Hot air nozzle, 21 ... Waste hot air duct, 22 ... Air pipe.

Claims (1)

[Claims] 1. It has an upright cylindrical body, an input port is provided at the center of the upper end of the body for inputting the hydrated nodules, and the inner surface of the input port has a shape suitable for shearing and crushing the hydrated nodules. A collision plate is provided, a conical cap is attached to the shaft head of a rotary shaft that stands upright in the center of the interior of the body and can be rotated, and a large number of beating rods are fixed radially and in multiple stages to the shaft of the rotary shaft. and a plurality of repulsion plates are vibably attached to the inner surface of the frame in correspondence with the beating rod,
A plurality of hot air nozzles are provided for blowing dry hot air heat-exchanged with waste hot air from one of the inner surfaces of the framework, and humid air is discharged from the other side of the framework, so that nodules are crushed. A crushing/drying device for hydrous nodules characterized by a large heat transfer area, increasing drying efficiency and saving energy.