JPS638664Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a device used for transporting granular materials such as limestone or coke, and more specifically, it is a device that is used to transport granular materials such as limestone or coke. The present invention relates to a powder transport device in which a chain conveyor equipped with a scraper for imparting transport force to the powder is installed in a casing.

[Conventional technology]

This type of powder transport device is generally known.
As shown in FIG. 8, in order to utilize the inner surfaces of the left and right side walls 01b, 01b and bottom wall 01a of the casing 01 as transport guide surfaces for powder and granules, the chain 02a and scraper 02b of the chain conveyor 02 are installed. Left and right side walls 01 of casing 01
b, 01b and the bottom wall 01a.

In the case of this conventional device, the casing 0
Powder is likely to be caught between the left and right side walls 01b, 01b and bottom wall 01a of the chain conveyor 02, and the chain 02a and scraper 02b of the chain conveyor 02. Since it is forcibly dragged and moved, it is inevitable that the wall surface will be damaged due to the dragging movement while the powder is stuck. Moreover, once such scratches occur, they act as resistance and become easily damaged rapidly, resulting in damage to the casing 01.
Not only the left and right side walls 01b, 01b but also the bottom wall 01a
There was a problem that the repair costs were high because the parts wore out in a short period of time.

Particularly, such a problem is remarkable when the powdery material has a strong abrasive action, such as limestone, coke, or saltpeter.

In order to solve such problems, the present applicant has proposed the following as disclosed in Japanese Patent Application Laid-Open No. 58-31806.
We have already proposed a technique that minimizes wear on the casing by providing a protrusion along the longitudinal direction of the casing to guide the lower surface of the scraper in sliding contact to form a gap between the lower surface of the scraper and the casing.

According to this conventional technology, it is possible to avoid the grinding action caused by the strong pressure contact between the lower surface of the scraper and the inner surface of the casing with powder and granules caught between them.As a result, the wear caused by the above-mentioned Although it is useful in that it can reduce
Since the protrusions are arranged continuously along the longitudinal direction of the casing, the powder between the protrusions moves with the movement of the scraper, albeit with a slight delay, and eventually the grinding Even if the severe wear caused by the action can be avoided, the problem remains that the wear on the inner surface of the casing due to the sliding movement of powder and granules cannot be eliminated, especially if the casing and scraper become larger. Unless the protrusions were made very high to separate the lower surface of the scraper from the inner bottom surface of the casing, the sliding movement of the powder against the casing was noticeable. When the bottom surface of the scraper is moved far away from the casing, the powder tends to escape from the front surface of the scraper, resulting in another problem in that the efficiency of conveying the powder relative to the amount of operation of the scraper decreases.

[Problem that the invention attempts to solve]

This invention prevents the grinding effect caused by the powder getting caught between the lower surface of the scraper and the inner surface of the casing between the scraper that transfers the powder and the casing, and improves the transport efficiency of the powder. The purpose is to prevent wear on the inner surface of the casing due to the movement of powder and granules without significantly reducing the wear.

[Means for solving problems]

In order to achieve the above object, the present invention provides a powder transport device in which a chain conveyor equipped with a scraper for imparting transport force to the powder is installed in a casing forming a powder transport path. Powder particles capable of forming a transport guide surface with the powder particles by storing and holding the powder particles on the left and right side walls or the bottom wall of the casing, or the inner surfaces of both of these, between the chain conveyor and the powder particles. a body storage part, and the powder storage part,
A technical measure was taken in which the chain conveyor was constructed of discontinuous spaces partitioned at appropriate small intervals in the direction of movement of the chain conveyor, and as a result, the following functions and effects were obtained.

[Effect]

A housing portion is formed between at least the inner surfaces of the left and right side walls or the bottom wall of the casing and the chain conveyor, so that severe wear due to the grinding action caused by powder particles being caught between the casing and the chain conveyor can be avoided. In the powder storage section, the powder is stored and held in a stopped state.
Due to the existence of the transport guide surface formed of the stored powder and granules, the chain conveyor can carry out the intended transport of the powder and granules with less transport loss. If the drag action of the scraper is prevented from reaching close to the inner surface of the casing, the powder particles being transported tend to escape between the scraper and the inner surface of the casing. Although the conveying action is always ensured by restricting the guide surface, there is no relative movement between the casing and the powder and granules that are stored and held in a stopped state, so there is no wear on the casing due to this relative movement. can also be avoided.

[Effect of idea]

Therefore, although it is a simple and inexpensive improvement that consists of configuring the above-mentioned powder storage section on the inner surface of the casing, it is possible to make effective use of the powder itself to be transported, and to prevent the grinding action from occurring. It has the effect of reducing wear and tear on the casing by preventing both abrasion and abrasion caused by the sliding movement of powder and granules on the inner surface of the casing.
Furthermore, when moving the chain conveyor, there is less conveyance loss due to the escaping of powder and granules, ensuring that the desired powder and granule transportation effect is achieved, while reducing repair costs due to casing wear as much as possible. Ivy.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 1 denotes a casing having a rectangular cross-sectional shape that forms a transportation path A for powder and granular materials such as limestone, coke, or saltpeter, and is composed of a bottom wall 1a, a pair of left and right side walls 1b, 1b, and a ceiling wall 1c. has been done.

Reference numeral 2 denotes a chain conveyor installed within the casing 1, which includes short link chains 2 on both left and right sides within the casing 1.
a, 2a, and across these left and right short link chains 2a, 2a, a plurality of scrapers 2b for imparting transport force to the powder and granular material are installed, and a plurality of scrapers 2b... A motor 2c for driving the short link chains 2a, 2a is provided on the upper part of the casing 1.

3 is the left and right side walls 1b, 1b of the casing 1;
A powder or granule material that can form a transportation guide surface with the powder or granule material by storing and holding the powder material in an immovable state between the inner surface and the short link chains 2a, 2a of the chain conveyor 2. This storage section is composed of discontinuous spaces partitioned at appropriate small intervals in the moving direction of the chain conveyor 2. That is, the left and right side walls 1b, 1b of the left and right side walls 1b, 1b correspond to the short link chains 2a, 2a.
, forming openings 3c, 3c that penetrate inside and outside,
Members 3d, 3d having a U-shaped cross section that close the openings 3c, 3c are fixed to the outer surfaces of the left and right side walls 1b, 1b, and the U-shaped members 3d, 3d are fixed to the outer surfaces of the left and right side walls 1b, 1b.
d contains the short link chains 2a, 2.
A plurality of reinforcing plate members 3a are fixed at appropriate intervals in the drive rotation direction of the plate a, and powder storage spaces 3b are formed between these adjacent plate members 3a, 3a.

Reference numerals 4 and 4 designate wear-resistant guy rails for the scrapers 2b fixed to the upper surface of the bottom wall 1a of the casing 1.

5... are the left and right side walls 1b, 1 of the casing 1.
a plurality of reinforcing and supporting members installed on b;
Abrasion-resistant guide rails 6, 6 for the scrapers 2b, and movable guide rails 7, 7 for the short link chains 2a, 2a are fixed over these support members 5.

Since the powder and granular material is stored and held in a stopped state in the powder and granular material storage space 3b, the transportation guide surface formed by the stored powder and granular material allows the desired powder to be transported by the chain conveyor 2. Since there is no relative movement between the casing 1 and the powder or granules, wear of the casing 1 due to this relative movement can be avoided while the body transporting action is always exerted reliably.

Next, another example will be described.

(a) As shown in FIG. 4, powder and granules are immovably stored and held on the inner surface of the bottom wall 1a of the casing 1 between the short link chains 2a and 2a of the chain conveyor 2. By doing so, a powder storage section 3 that can form a transportation guide surface with the powder and granules is constructed. In other words,
A plurality of members 3e are interposed between the inner surface of the bottom wall 1a of the casing 1 and the guy rail 4 at appropriate intervals in the drive rotation direction of the short link chains 2a, 2a, and these adjacent members 3e, 3e...The above-mentioned powder storage space 3b
form...

(b) As shown in FIGS. 5 and 6, powder and granules are stored in an immovable manner between the chain conveyor 2 on the inner surfaces of the left and right side walls 1b, 1b and the bottom wall 1a of the casing 1, respectively. Powder and granule storage units 3, 3 may be constructed which can form transport guide surfaces with the granule by holding the powder and granules.

(c) As shown in FIG. 7, the powder storage section 3
The left and right side walls 1b, 1b of the casing 1 may be formed by punching them outward.

(d) In the above embodiment, the chain conveyor 2
Short link chain 2 as the chain of
a, 2a are used, but a plate link chain or the like may also be used.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the powder transport device according to the present invention, FIG. 1 is a vertical front view, FIG. 2 is a cross-sectional view taken along the line -- in FIG. FIG. FIG. 4, FIG. 5, and FIG. 7 are longitudinal sectional front views showing different embodiments, and FIG.
It is a sectional view taken along the - line in the figure. Moreover, FIG. 8 is a longitudinal sectional front view showing a conventional device. DESCRIPTION OF SYMBOLS 1... Casing, 1a... Bottom wall, 1b... Side wall, 2... Chain conveyor, 2a... Chain, 2b... Scraper, 3... Powder storage section, A... Powder transport path.

Claims (1)

[Claims for Utility Model Registration] 1. Powder and granule in which a chain conveyor 2 equipped with a scraper 2b for imparting transport force to the powder and granule is installed in a casing 1 forming a powder and granule transportation path A. In the transport device, the powder particles are stored and held on the inner surfaces of the left and right side walls 1b, 1b or the bottom wall 1a of the casing 1, or both 1b, 1b, 1a, between the chain conveyor 2 and the powder particles. The powder storage section 3 is formed into a discontinuous shape partitioned at appropriate small intervals in the moving direction of the chain conveyor 2. A powder transport device consisting of a space. 2. The powder transport device according to claim 1, wherein the chain conveyor 2 uses a short link chain 2a. 3. The powder transport device according to claim 1, wherein the chain conveyor 2 uses a plate link chain.