JPS6333112Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an aeration processing machine such as an aeration dryer that continuously supplies granular raw materials and aerates and dries them.

4 and 5 show an example of a conventional ventilation dryer, in which 1 is a drying chamber, which is supported by a high frame 2. FIG. 3 is a net conveyor, and the granular raw material input from the raw material input conveyor 4 is dried by hot air while passing through the drying chamber 1 by the net conveyor 3, and is discharged from a product discharge chute 5.

Examples of the granular raw material include granules obtained by granulating iron ore, iron oxide, titanium oxide, etc., or granules obtained by crushing iron ore to a desired size.

In such a conventional device, a part of the granular raw material that is transported and dried by the net conveyor 3,
Particulate matter that disintegrates during conveyance and powdery matter that adheres to and impregnates the raw materials passes through the net of the net conveyor or adheres to the net conveyor and falls on the return side. A hopper 6 extending almost the entire length is provided at the bottom of the drying chamber 1, and a screw conveyor 7 is provided at the bottom of the hopper 6, and the grains and powder that have fallen into the hopper 6 are transferred from the screw conveyor 7 to a rotary valve 8. After that, it is collected in Dust Box 9.

In the case of such a conventional device, in order for the grains and powder that have fallen into the hopper 6 to slide quickly into the screw conveyor 7, the angle of inclination of the side wall of the hopper 6 is adjusted so that the grains and powder fall into the hopper 6. The angle of repose must be greater than or equal to the angle of repose of Therefore, it is necessary to make the depth of the hopper 6 considerably deep.

For the reasons mentioned above, if the drying chamber 1 is made large, the hopper 6 will also become extremely large in proportion to this.
As shown in the figure, the drying chamber 1 must be supported by a high frame 2, and the screw conveyor 7 is also long, making it an expensive piece of equipment, and there is a problem in that the building that houses it must also be large. .

The object of this invention is to provide a deposit removal device that can eliminate the need for a large hopper.

The technical means taken to achieve the above purpose is an aeration processing machine that carries out drying processing by ventilating the inside of the processing chamber while the granular materials are loaded on a net conveyor and moved through the processing chamber. ,
The floor of the processing chamber is provided close to the return side of the net conveyor, and a scraping plate is attached to the support that connects the left and right conveyor chains of the net conveyor. The edge scrapes up powder and granules that have accumulated on the floor of the processing chamber and scrapes them off into a hopper provided at one end of the floor.

The effect of such technical means is that some of the granular raw materials that are moved within the processing chamber by the net conveyor, the granular materials that have collapsed during transportation, and the powder that is attached to and contained in the raw materials, pass through the net of the net conveyor, or It falls and accumulates on the floor provided close to the retan side. The powder and granules thus accumulated are scraped to the edge of the floor surface by a scraper plate attached to a support connecting the left and right conveyor chains of the net conveyor, and are collected by falling into a hopper provided at one end of the floor surface.

Therefore, there is no need to provide a large hopper at the bottom of the processing chamber, and only a small hopper at the end of the floor is required, so the entire processing machine can be made smaller.

The unique effect of this invention is that the net conveyor is equipped with a scraping plate, and the scraping plate that moves with the net conveyor forcibly scrapes off the deposits on the floor, ensuring that the deposits are removed. It is.

An embodiment of this invention will be described below with reference to the accompanying drawings.

In FIG. 1, 11 is a processing chamber supported by a frame 12, and 13 is a net conveyor. This net conveyor 13 has a pair of left and right endless conveyor chains 14 connected by a plurality of rod-shaped supports 15 arranged at regular intervals between the two chains, and an endless belt-shaped net 16 stretched between the chains 14. The folded parts at both ends of this chain 14 are attached to the chain foil 1 attached to the frame 12.
7 and 18, and one chain wheel 17 is driven by the motor 19 to cause the conveyor 13 to run in the direction of the arrow. Most of the conveyor 13 is in the processing chamber 1
1, and the rollers of the left and right chains 14 on the carrier side are supported by guide rails 21 provided in the processing chamber 11, as shown in FIG.

A plurality of frames 22 are fixed to required supports 15 by means such as bolting, and these frames 22
Fix the plate 23. The dimensions are determined so that there is always a gap of about 5 to 10 mm between the lower edge of this scraper plate 23 and the floor plate 24 of the processing chamber 11.

In both end walls 25 of the processing chamber 11 shown in FIG. 1, openings 27 and 28 are provided at the top and bottom, respectively, through which the carrier side and return side of the conveyor 13 pass.

Frame 12 at the bottom of each bottom opening 28
A horizontal shaft 29 is rotatably attached to each of the horizontal shafts 29, and a seal plate 30 for closing the opening 28 is fixed upward to each horizontal shaft 29. Horizontal axis 2
A shaft 33 of a weight 32 is rotatably attached to support pieces 31 fixed downward at both ends of the seal plate 9, and the seal plate 30 is held upward by the weight of the weight 32.

Additionally, a number of rectangular seal plates 35 are disposed in each of the upper openings 27. If the seal plates 35 are metal plates, their upper ends are attached to the upper edges of the openings 27 by shafts so that they can swing freely, and if they are rubber plates, their upper ends are fixed to the upper edges of the openings 27 so that they can swing by their elasticity.

Reference numeral 36 denotes an input conveyor, and this conveyor is attached to a frame 38 that can freely swing around a vertical shaft 37 on the end of the frame 12, and the frame 38 is swung by an appropriate drive mechanism 39 to move the conveyor. The granular raw material is uniformly supplied to the entire width of 13.

Reference numeral 41 denotes a frame surrounding the tail portion of the net conveyor 13, and a hopper 42 is provided at the bottom of the frame, a dust outlet 43 is provided at the bottom of the hopper 42, and a dust box 44 is provided at the bottom of the hopper 42.

Reference numeral 50 denotes a frame surrounding the top portion of the net conveyor 13, and a product discharge chute 51 is provided in this frame 50.

Further, a plurality of hot air blowing ports 53 are provided on the side of the processing chamber 11, and these blowing ports are connected to a hot air generator (not shown), and a plurality of exhaust ports 54 are provided in the upper part of the processing chamber 11.

Next, its effect will be explained.

The unprocessed granular raw material is fed onto the tail portion of the net conveyor 13 by an input conveyor 36. The granular raw material fed onto the conveyor 13 is transferred to the net 16
At the same time, the raw material enters the processing chamber 11 through the opening 27, but at this time, the seal plate 35 is pushed open by the granular raw material or the scraper plate 23.

The granular raw material that has entered the processing chamber 11 is moved together with the net 16 and is dried by hot air blown from the blowing port 53, and the humid air that has taken moisture from the granular raw material is discharged from the exhaust port 54.

The thus dried granular raw material pushes open the seal plate 35 on the exit side, exits from the opening 27 on the exit side, and is discharged from the top of the conveyor 13 as a product to the discharge chute 51. On the other hand, a part of the granular raw material, the granular matter disintegrated in the conveyed material, and the powder attached to and contained in the raw material pass through the net 16 of the net conveyor or adhere to the net 16 and fall on the return side, and onto the floor plate 24. However, the scraper plate 23 that moves together with the net 16 moves while scraping up the accumulated raw materials on the floor plate 24 and scrapes them into the hopper 42. will be collected.

In the above operation, when the scraper plate 23 moving together with the net 16 enters the processing chamber 11 from the top of the conveyor 13 through the opening 28, and when it exits from the inside of the processing chamber 11 through the opening 28, Seal plate 30 closing each opening 28
is pushed down, but at this time the plate 30 rotates together with the shaft 29, and its support piece 31 rotates as shown by the chain line in FIG.

Therefore, since the weight 32 attached to the support piece 31 is lifted, when the scraping plate 23 passes and the seal plate 30 becomes free, the support piece 31 rotates downward due to the weight of the weight 32, and the shaft 29 integrated with it rotates downward. The seal plate 30 fixed to returns to its original vertical state.

Therefore, the upper and lower openings on the inlet and outlet sides are wide open when the scraper passes through, but otherwise they are sealed by the seal plate, so there is little heat loss due to leakage of hot air.

In addition, examples of the ventilation treatment machine include a ventilation cooling machine and a ventilation baking machine in addition to the ventilation dryer described above.

[Brief explanation of the drawing]

Fig. 1 is a partially longitudinal side view showing an embodiment of the aeration treatment machine having the removal device of this invention, Fig. 2 is an enlarged longitudinal sectional front view of the same essential parts, and Fig. 3 is the same as Fig. 2. FIG. 4 is a side view showing an example of a conventional ventilation dryer, and FIG. 5 is an enlarged partially longitudinal front view of the same. 11...Processing room, 13...Net conveyor, 2
3... Scraping board, 27, 28... Opening, 30, 35
...Seal plate.

Claims (1)

[Scope of utility model registration request] In an aeration processing machine that performs drying processing by ventilating the inside of the processing chamber while granular raw materials are loaded on a net conveyor and being moved into the processing chamber, the pre-air net conveyor approaches the return side of the processing chamber. A scraper plate is attached to the support that connects the left and right conveyor chains of the net conveyor, and when the scraper plate runs on the return side, the lower edge of the scraper plate will be attached to the support that connects the left and right conveyor chains of the net conveyor. A deposit removal device for an aeration processing machine characterized by being configured to scrape up materials and scrape them off into a hopper provided at one end of a floor surface.