JPS6040308A - Sweeping board conveying device - Google Patents

Abstract

PURPOSE:To increase a conveyance amount and to improve facilitation of regulation of a conveyance amount, by a method wherein a conveyance device for a sweeping board used in a coal storage silo is constituted such that a plurality of sweeping boards are arranged in a line in a moving direction at given pitches within the foot length range of a granular material. CONSTITUTION:The mounting pitch of each of index levers 13, vertically movably arranged in a line to a rotary ring 11 by means of a support shaft 16, is set to a value longer than a foot length l. Sweeping boards 14A and 14B are disposed to the forward end of the index lever 13. This constitution enables the sweeping boards 14A and 14B to convey a conevyance amount Wmax of a granular material 21, which is decided based on a board width B, an inclination angle theta1, a pitch Ds a weight Wo of the sweeping board, etc. This constitution permits adjustment of a volume in place through adjustment of a clearance DELTAD between the sweeping boards 14A, 14B and a bottom wall 15 of a guide groove and the pitch Ds, and enables to give a maximum effect of arrangement in a line.

Description

[Detailed Description of the Invention] Does this invention apply to, for example, coal storage silos, grains, or flour milling?
Discharging and placing stored materials in general silos for storage
The present invention relates to a paddle board transporting device that forms +i'.

(Background Art) Conventionally, a silo dispensing device has one cone-shaped central cone installed at the lower end of the silo, as shown in Figs. 1 and 2, to enable first-in and first-out operations. A sulin) 3 (r) is formed around the entire circumference of the lower end B15 of the silo cylinder wall 2.Then, a rotating ring 4 installed on the outer periphery of the slit 3 is provided with a scraping blade that faces the slit 3 and scrapes out the stored material. 5 is installed so that it can rotate freely. The knife plates 8...r are attached to the rotary ring 4 via the traction levers 7 and 11, and the knife plates 8 are configured to move in the guide groove 9. That is, as the rotary ring 4 rotates, the 7J'' blade 5 scrapes one piece of stored material 6 into the guide groove 9, and then the 7J'' blade 5 drops the stored substance 6 into the guide groove 9.
It is transported to a melting port 10 provided at a predetermined position and discharged.

By the way, in the case of a coal storage silo, it must be taken into consideration that the stored coal is highly humid, has irregular particle sizes, and has extremely fluidity.

On the other hand, the grains and flours stored in general silos are all refined, single-standard products, and have low moisture content, so it must be considered that they have extremely good fluidity.

In the case of the above-mentioned dispensing device, the stored substance 6 scraped out into the guide groove 9 by the scraping blade 5 is carried out by a large number of succeeding scraping plates 8...
The material is divided into approximately equal parts and transported to the drop port 10.

This is because, if a large number of η islands 8... do not develop evenly and the bara tree is large, the stored material 6 in the guide groove 9 may heat up outside the groove during the continuous image formation, or the falling hole may 10, making smooth relaying to one conveyor impossible.

Therefore, in the case of the above-mentioned dispensing device, when transporting the scraper board, t! +k There is a great need to know and provide appropriate design and manufacturing.

By the way, as shown in FIG. 3, the width B of the scraping board 8,
The angle θ1 that the scraping plate 8 makes with the guide groove 9a, the scraping plate 8
What are the results of an experiment regarding how the clearance 7D between the guide groove bottom surface 9a and the friction coefficient μ affect the amount of coal transported Wmax, respectively? To summarize, it was as follows: First, the size of the width B of the scraping board 8 and the amount of coal transported WmaX are in a directly proportional relationship, as shown in FIG. 4. That is, the width B of the scraping board 8? By increasing the size, the transport amount Wmnxk can be increased. However, jD=o, θ
, = 406, this is the experimental result under the condition that the guide groove bottom surface 9& is made of steel.

Next, the relationship between clearance jp and transportation amount Wmax is
It was as shown in Figure 5. That is, clearance jp
When is zero, the conveyed amount wmax is maximum, and the conveyed amount Wmax k can be adjusted depending on the size of the clearance i'f).

The side shape of the coal 6 being conveyed on the back of the scraping board 8 was approximately as shown in FIG. This [to explain briefly]
〃Inclination angle θ1 of the cutting board 8 with respect to the guide groove bottom surface 9a = 40
°, and when the guide groove bottom surface 9at is made of steel, the tip inclination angle θ3 of the coal 6 = 186 to 25'', the rear angle of repose θ2 of the coal 6 = 45° to 55°, and the machining has a constant shape? It was found that the angle of the active and passive vector lines calculated from the internal friction angle of 39° was about 80%. The relationship between the total height of tan coal and the Hundtren graph for milling is as shown in Figure 6, 1ζ.In other words, the amount of heaping up a uniformly increases until the width B of the scraping board is about 10 sides. , and beyond that, it remains almost constant.7 N length showed an increase rate greater than -th order proportionality as the width B of the scraping board 8 increased.

Next, pinch Ds moving back and forth in the moving direction of the scraping board 8...
The results of the experiment regarding the size of , were as follows. That is, when the pinch D8 is larger than the length of the coal 6, the coal transported by the individual scrapers 8...
The urchins shown in the figure form independent peaks of a constant shape. However, when the pinch D8 is smaller than the Hundren graph L, a coupled effect appears as shown in FIG. 8, forming a large pile of coal 6, and the amount transported increases dramatically.

FIG. 9 shows the relationship between the pinch D8 of the cut plate 8 and the conveyed amount Wmax. However, the scraping board (D width B is 50
This is an experimental result under the condition that the Hundren graph = 20 cm (Fig. vJ6) According to this, the pinch D of the scraping board 8 is about 1/2 of the Hundtren graph (10 cm in ) ηλ Therefore, the above-mentioned achievement effect is remarkable, and around Ds=1, the amount of transportation is more than five times that of the case of single transportation as shown in FIG. Therefore, it has been found that such an effect can be achieved by increasing the 7 flexibility of the transport amount (as shown in Figure 3). and the amount of coal 6 transported w
There is a close relationship between max and the amount of scraping board W (,
Once wmax is determined, the required amount of scraping board Wo is determined,
If it is too light, the scraping board will float. For example, W.

= 4.7 When Vf, the limit force Wmax for the inclination angle θ of the scraping board The obtained results were as shown in the graph shown in Figure 10. According to this, the inclination angle θ is small. Transport amount wmax
is large, but when θ□=40° or less, the coal 6 on the scraping board does not fall through the droplet 10, so it was found that 0□=400 is the most advantageous.

(Object of the Invention) Therefore, an object of the present invention is to provide a plank transporting device configured to increase the conveyance amount by utilizing the coupled effect r of the plank, or to increase the flexibility r of the transfer amount. be.

(Structure and Effects of the Invention) To achieve the above object, the scraping board conveying device 1 of the present invention includes at least two or more scraping boards t1 moving forward and backward in the moving direction. (preferably within the range of J/2 to J/2).

When it is set at around 1/2 of the pinch length of the raking board, the coupled effect is small and the amount of transport is small.

However, when 〃) is set to the same level as the pinch ligature Hundrenges of the board, and when it is 1c, the coupled effect is large and the amount transported is significantly large. Therefore, depending on the size of the pinch of the scraping board, the desired amount of conveyance can be increased or the purpose of adjusting the amount of conveyance can be easily achieved.

In addition, at the same time as setting the temporary pinch mentioned above,
Depending on the number of plates used in the warehouse (2 or more), the purpose of increasing or adjusting the amount of cargo carried can be achieved.

Thus, it is possible to increase the transport capacity or adjust the transport capacity.
As a result, depending on whether the material to be transported is coal, grain, or milled flour, the silo storage material scraped into the guide groove by the scraping blade, and the subsequent scraping board are shortened. It can be divided into equal parts and transported to the dropout.

Therefore, it is necessary to design and manufacture the scraping board transporting device and even the dispensing device. , no matter how big or small, it can be done easily.

In other words, does the wrinkled material overflow out of the guide groove while being transported by the scraper board, or does it flow smoothly to the conveyor connected to the droplet? The inconveniences and drawbacks of lack can be completely avoided.

(Example) In Fig. 11, 11 is a rotary ring, 12 is a blade for ρ, 13 is a traction lever, 14A, 14B are a set of two scraping plates, 15 is a guide groove bottom wall r (not shown) 〇 traction The base end of the lever 13 is attached to a support shaft 16 with respect to the rotating ring 11 so as to be able to swing up and down. The mounting of the towing levers 13 to each other in a pinch is done by the above-mentioned 7-tength snowman.
02 scraping plates 14A installed on a support rod 17 fixed to the tip of 4 in parallel to the moving direction of the rotating ring 11;
14B is a pinch D8 within the range of the above Huntrengrano
And, the inclination angle 01 with respect to the guide groove bottom wall 15 is 01=
They are each installed parallel to each other at an angle of 40°. The scraper plate 14A on the front side in the moving direction is fixed to the front end of the support rod 17.

However, the rear side scraper plate 14B is installed on a socket 18 and a stop bolt 19 that penetrate the support rod 17 so that the pinch D8r can be changed.

Therefore, when the rotating ring 11 is moved in the direction of the arrow 20, the blade 12 scrapes the powdery material 21 onto the bottom wall 15 of the guide groove, and the subsequent force ≧ is carried by the plates 14A and 14B. 0 In particular, the coupled effect of the two-piece set of scraping boards 14A, 14Bt, and groove Lf), :Ol scraping board 14A, 14B @B, oblique angle θ1, pinch D8, scraping board heavy lid Wo, etc. Transport amount Wmax determined based on (tip inclination angle 03, rear angle of repose θ2
, rise amount a, total height, Hundrenges! In addition to transporting the pulverulent material 21?'), the scraper plate, which is constructed independently for each traction lever 13..., divides the powder and granular material 21? r.

Therefore, the depth of the guide groove 15 is determined by the total height h of the particulate material 21.
It is sufficient to have a size that can cover T, and it can be smoothly relayed to the conveyor connected to the drop port.

The carrying amount wmax can be easily determined on site by adjusting the clearance ADk between the scraping plates 14A, 14B and the guide groove bottom wall 15, or by moving the plywood 14Bk on the rear side and adjusting the pinch D8. It is possible to correct and adjust it to 0.

[Brief explanation of drawings]

Fig. 1 is a simplified cross-sectional view of the dispensing device in the silo, Fig. 2 is a front view of the dispensing device [constituting the shredded board transport device], Fig. 3 is an explanatory diagram of the transport characteristics of shredded boards, Figures 4 to 6 are custom-made curve diagrams, Figures 7 and 8 are explanatory diagrams of transport characteristics of scraping boards, Figures 91 and 10 are % sexual diagrams, Figure 1
FIG. 1 is a front view of the oyster root transporting device according to the first embodiment of the present invention. Inventor: Hidehiko Nakazaki Inventor: Akio Suzuki Inventor: Haruo Hoshino Inventor: Hiroshi Sugisaki Inventor: Toshiaki Sekiyu Inventor: Seiya Katayama Inventor: Shun Saijo Applicant: Honechu Komuten Co., Ltd. Attorney: Yujibe Shima, Patent Attorney ,',!:,',:
:''Naru 11 1st @ Figure 2 11 4th Figure 5 Figure 6 Section 7 Figure 8

Claims (1)

[Claims] (1) In a scraper transport device that transports and moves particulate matter, a plurality of scrapers (14A) move back and forth in the direction of movement. (14B)', r, and the particulate material (21) is installed at a predetermined pitch (D8) within the range of 7 nt length ()) 71) Plate transport video.