JPS6361886A - Carrying cooling device for granule - 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 "Field of Industrial Application" The present invention relates to a conveying and cooling device suitable for use in conveying and cooling granular materials, particularly clinker, which is a semi-finished product during cement manufacturing.

``Prior Art'' For example, during the manufacturing process of cement, something called clinker is produced. This is a semi-finished cement product made from calcined raw materials limestone and clay, and its grain size is approximately 50 mm or less. This clinker is
Immediately after firing, the temperature is approximately 1265℃,
It is cooled to 150° C. in a clinker cooler, and then conventionally stored in a clinker yard. In addition, in order to improve the quality of the product and to finish this clinker into cement products, it is re-pulverized in a crusher called a mill, but in order to reduce the burden on the blades and bearings of this mill, Add it to lOO℃
However, in the past, this cooling was left to natural cooling through storage in the clinker yard.

``Problem to be solved by the invention'' However, with the conventional storage and cooling method described above, a vast storage area (clinker yard) must be secured, and the clinker is transported from there to the mill where it will be processed in the next process. This requires large-scale lifting and transporting equipment, etc., and there is a possibility that clinker, which is spread over a vast area, may cause dust pollution, so countermeasures must be taken to prevent this. Furthermore, there were other problems that needed to be resolved, such as natural heat dissipation, which meant that efficient cooling was not possible, making it difficult to shorten the construction period.

The present invention has been made in order to solve the above-mentioned conventional problems regarding storage and cooling of clinker, and its purpose is to provide a transport cooling device that enables effective cooling and transport of clinker. There is.

"Means for Solving the Problems" A conveying and cooling device according to the first invention includes a vibrating conveyor that conveys the powder by transmitting vibration to a trough on which the powder is loaded, and a vibrating conveyor that covers the vibrating conveyor and conveys the powder. The casing includes a casing that constitutes a cooling passage for the granules, and a supply means that supplies cooling air to the inside of the casing.

In addition, if the vibrating conveyor is configured such that a plurality of troughs with different sieve mesh sizes are provided in a multi-stage structure, and these troughs are arranged from the top in descending order of sieve mesh size,
While sifting the powder, it can be transported to a silo and cooled.

Further, the conveying and cooling device according to the second invention includes a plurality of vibrating conveyors that convey vibrations to a trough on which the powder and granules are placed, and a plurality of vibrating conveyors that classify the powder and granules and conveying the powder and granules to the plurality of vibrating conveyors. A casing that covers the vibrating conveyor and constitutes a cooling passage for the powder and granules, and a supply means for supplying cooling air into the inside of the casing. .

"Function" According to the conveying cooling device having the above configuration, the powder and granules can be cooled during conveying by the cooling air passing through the casing, eliminating the need for large-scale conveying equipment, and eliminating concerns about particle dust pollution. This makes it possible to achieve efficient cooling and removal. In particular, according to the conveying and cooling device according to the second aspect of the invention, since the powder or granules are classified by the classifier and then sent to the vibrating conveyor, the powder or granules can be effectively cooled.

``Embodiment'' Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. In the figure, what is generally designated by the symbol l is the conveying and cooling device of the present invention. This transport cooling device l is
Two types of high-temperature (approximately 150°C) powder (clinker) that exits clinker cooler C and is sieved into fine particles and coarse particles by classifier B are transported toward silo S. It cools the granular material, and its configuration consists of the above-mentioned classifier B that classifies the granular material, two vibrating conveyors 2 that convey the clinker that has been sieved into two types by the classifier B, and A casing 3 that covers the conveyor 2 and forms a cooling passage for the powder and granules, a supply means (not shown) for supplying a cooling passage into the inside of the casing 3, and a Zyclone (not shown) provided on the exhaust side of the casing 3. The dust collector) 4 is the main component.

To explain these in detail, the vibrating conveyor 2
The trough rotates a vibration generator using an electric motor and transmits the vibration to a trough to transport clinker.The trough is slightly inclined toward the silo S side and is attached to a spring on a pedestal fixed to a concrete floor or the like.

The casing 3 that covers the vibrating conveyor 2 has a trough sealed structure, and is designed to prevent foreign matter from entering from the outside, as well as to prevent dust generation and environmental pollution to the outside. A supply pipe 5 connected to a classifier B is connected to the supply side of this casing 3 (left side in FIG. 1), and a discharge port 3a for discharging clinker is provided at the tip of this casing 3. . On the other hand, an intake pipe 6 for cooling air is connected to the lower surface of the supply side of the casing 3 in a state tilted toward the clinker transport direction, and an exhaust pipe 7 connected to the dust collector 4 is connected to the upper surface of the exhaust side of the casing 3. has been done.

Examples of the supply means for supplying cooling air to the casing 3 include a blower, but the configuration thereof is not limited to the blower.

The dust collector (cyclone) 4 separates and collects clinker mixed into the exhaust of cooling air, and the clinker collected by this dust collector 4 is sent to the drop hole 4a at the lower end.
From there, the clinker is sent to a hopper 8 which receives the clinker, and then transported to a silo S by a conveyor 9.

Next, the operation of the conveying cooling device l having the above configuration will be explained.

After being fired, the clinker is cooled to about 150°C by a clinker cooler and is put into a classifier B, where it is classified into coarse particles and fine particles. It is thrown into the trough of conveyor 2.

The clinker put into the vibrating conveyor 2 is conveyed to the discharge port 3a of the casing 3 by the vibration of the trough, and
During transportation, the casing 3 is forcibly cooled by cooling air blown through the intake pipe 6. In addition, since this cooling air is blown toward the clinker transport direction, there is no possibility that it will be exhausted to the clinker supply pipe 5 side.

In the example, clinker classified into a predetermined size is
The clinker is sent to two vibrating conveyors 2, and the clinker is vibrated by the vibrating conveyor 2, and then forcedly cooled by cooling air, which has the advantage of improving clinker cooling efficiency, compared to cooling by natural heat dissipation. The clinker can be cooled to a predetermined temperature in an extremely short time. Note that, if necessary, the cooling rate can be set as appropriate in order to cope with changes in outside temperature, etc.

After cooling, the clinker cooled by the transport cooling device is stored in the silo S.
This eliminates the need for yards that previously occupied a vast area, and also eliminates the possibility of scattering particulate dust that causes pollution. In addition, since the clinker is cooled while being transported to the silo S by the vibrating conveyor 2, it is difficult to remove the clinker from the pile of clinker piled up in the open using a large lifting device such as a crane. It can be much more functional than something that is carried away.

In the embodiment, clinker is divided into two types, fine particles and coarse particles, and each type is cooled and conveyed by two vibrating conveyors 2. However, it is not limited to two units. In the above example, it is of course possible to use a plurality of vibrating conveyors 2 for classifying the clinkers into more sizes and cooling the classified clinkers.

Further, in the embodiment, the present conveying and cooling device S is applied to clinker, but the stored powder and granular material is not limited to clinker.

FIG. 2 shows another example of the present invention, in which the main body of the conveying and cooling device is the vibrating conveyor, and a plurality of troughs 20, 21, and 22 with different screen mesh sizes are provided in a multistage structure. In addition, these troughs 20.degree. 21.22 are arranged from above in descending order of sieve mesh size, and the troughs are all covered by the casing 3.

In addition, according to this example, the powder and granules coming out of the clinker cooler C are directly received, and while being sieved into three stages of fine, medium, and coarse particles, they are transported to a silo and cooled. Be able to do that.

"Effects of the Invention" As explained above, the present invention provides the following excellent effects.

(a) Powder and granules can be cooled during transportation by cooling air passing through the casing, eliminating the need for large transportation equipment and yards occupying vast areas, and eliminating concerns about particle dust pollution. , thereby achieving efficient cooling and unloading.

(b) Since clinker cooling is forced cooling using cooling air, it is possible to cool the clinker in an extremely short time compared to cooling by natural heat radiation, and it is also possible to set the cooling rate as necessary. , which has excellent effects such as.

(c) In particular, according to the conveying and cooling device of the second invention, since the powder and granules are classified by the classifier and then sent to the vibrating conveyor, each of the powder and granules after being classified is efficiently cooled. Be able to do it.

[Brief explanation of the drawing]

FIG. 1 shows one embodiment of the present invention, and is a schematic diagram of a conveying and cooling device, and FIG. 2 is a schematic diagram of the main parts of another embodiment of the present invention. C: clinker cooler, S: silo, B: classifier, 1: conveyor cooling device, 2: vibrating conveyor, 3...
Casing, 4... Casing, 6...
Intake pipe, 7...exhaust pipe.

Claims (1)

[Scope of Claims] 1) A conveying and cooling device for powder and granules, which transports high-temperature powder and granules toward a silo and cools the powder and granules during the transportation, wherein the powder and granules are placed on the silo. A vibrating conveyor that conveys powder and granular material by transmitting vibrations to a trough, a casing that covers the vibrating conveyor and forms a cooling passage for the powder and granular material, and a supply means that supplies cooling air to the inside of the casing. Transport and cooling equipment for powder and granular materials. 2) The vibrating conveyor is characterized in that a plurality of troughs with different sieve mesh sizes are provided in a multi-stage structure, and these troughs are arranged from above in descending order of sieve mesh size. A conveying and cooling device for powder or granular material according to claim 1. 3) A cyclone is provided on the exhaust side of a casing that covers the vibrating conveyor and constitutes a cooling passage for the powder or granular material according to claims 1 or 2. Conveyance cooling device. 4) A conveying/cooling device for powder and granules that transports high-temperature granules toward a silo and cools the granules during the conveyance, by transmitting vibrations to the trough on which the granules are placed. A plurality of vibrating conveyors that convey powder and granular materials, a classifier that classifies the powder and granular materials and distributes the powder and granular materials to the plurality of vibrating conveyors, and a cooling passage for the powder and granular materials that cover the vibrating conveyors and constitute A conveying and cooling device for powder and granular material, comprising a casing and a supply means for supplying cooling air into the inside of the casing.