JPH0642822U - Discharge chute structure in chain conveyor - Google Patents

Abstract

(57) [Summary] [Objective] Prevents the accumulated powder particles from adhering to the inside of the discharge chute. [Structure] The rail 3 is laid on the bottom plate 13 of the transportation path 12, and a chain 18 having a plurality of scraping plates 19 on both side surfaces is arranged so as to move along the rail 3, and the bottom plate 13 is provided. In a chain conveyor provided with a discharge chute 11 that opens downwardly, a discharge chute structure in the chain conveyor configured to expand the discharge chute 11 downward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a discharge chute structure in a chain conveyor, and more particularly, to a discharge chute structure in a chain conveyor suitable for transporting powder particles such as coal.

[0002]

[Prior art]

 Various methods have been proposed and implemented as a means of transporting powdered particles, and one of them is, for example, a coal yard, a boiler, a thermal power plant, or a chain conveyor used for transporting pulverized coal or ash in other coal utilization equipment. is there. This chain conveyor is constructed such that a rail 3 is laid on a bottom plate 2 of a transportation path 1 and a chain 4 is transferred on the rail 3 as shown in FIGS. A plurality of scraping plates 5a and 5b are attached to both side surfaces of No. 4.

The chain conveyor is provided with a discharge chute 6 for supplying the transported granular material P to a transportation destination such as a predetermined device. As shown in FIG. 5, the discharge chute 6 is composed of an upper chute 7 and a lower chute 8 that open below the bottom plate 2, and a hydraulic cylinder 9 as a drive device is provided between the chute 7 and the lower chute 8. A gate 10 that opens and closes is provided.

Then, when the chain 4 is moved in the direction indicated by the arrow A by a drive device (not shown), the powder particles P are also transported in the direction A and fall into the discharge chute 6 to become retained powder particles P ′. Then, by opening the gate 10 as necessary, the accumulated powder particles P ′ are supplied to a predetermined device or the like.

[0005]

[Problems to be solved by the device]

 By the way, there is a problem with the conventional discharge chute structure in the chain conveyor as described above. That is, in this chain conveyor, the pressing force V is constantly exerted by the scraping plates 5a and 5b on the powder particles P'retained in the discharge chute 6 during the operation of the conveyor, and the powder particles are compressed into a lump. The particles P ′ adhere to the inner surface of the upper chute 7.

[0006] This adhesive force is particularly large when the granular material P'is a sticky substance such as pulverized coal containing water, coal having a large amount of clay, or ash, so that it does not fall even if the gate 10 is opened. There was a problem.

[0007]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems of the prior art. A chain having rails laid on the bottom plate of a transportation path and a plurality of scraping plates on both sides is provided on the rail. In a chain conveyor having a discharge chute that opens downwardly on the bottom plate and is arranged so as to move along the discharge path, discharge in a chain conveyor configured to expand the discharge chute downward It provides a chute structure. The angle formed so as to spread on the discharge chute depends on the property of the material to be transported, but is usually about 2 to 20 °.

[0008]

[Work]

 In the discharge chute structure of the chain conveyor having the above-mentioned structure, even if the granular material P ′ retained in the discharge chute adheres to its inner wall, the pressing force V generated by the movement of the scraping plate when the gate is opened causes It will easily peel off from the inner wall and fall.

[0009]

【Example】

 An embodiment of a discharge shoot structure in a chain conveyor according to the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a side cross-sectional view of the discharge chute 11. The discharge chute 11 has an upper portion attached to a bottom plate 13 forming a transport path 12 and an upper portion that expands downward at an angle θ (for example, XX degrees). It comprises a chute 14 and a lower chute 15 joined to the lower end of the upper chute 14. A gate 17 opened by a hydraulic cylinder 16 as a driving device is arranged between the upper chute 14 and the lower chute 15.

In the apparatus having the above-mentioned configuration, when the gate 17 is closed, the powder particles P transferred by the scraping plate 19 that moves together with the chain 18 stay in the upper chute 14 and stay powder particles P ′. Become. When the chain 18 continues to move in this state, as shown in FIG. 2, the pressing force V acts on the accumulated powder particles P'due to the action of the scraping plate 19. This pressing force V becomes a force V ₁ for pressing the accumulated powder particles P ′ against the inner wall of the upper chute 14. However, this force V ₁ is weakened because the upper chute 14 spreads so as to have the angle θ, and as a result, the adhesive force is weakened.

In such a state, by opening the gate 17, the accumulated powder particles P ′ can be transported to a destination such as a predetermined device via the lower chute 15. In this case, even if a part of the accumulated powder particles P ′ adheres to the inner wall of the upper chute 14, it can be easily separated by the action of the pressing force V of the scraping plate 19.

[0012]

[Effect of device]

 As is apparent from the above description, the discharge short structure of the chain conveyor according to the present invention has a rail laid on the bottom plate of the transportation path, and a chain with a plurality of scraping plates on both sides is installed along the rail. In a chain conveyor that is arranged to move and has a discharge chute that opens downward on the bottom plate, the discharge chute is configured to expand downward.

Therefore, the force for compressing the staying powder particles in the discharge chute expanded downward is weakened and it is possible to prevent the powder particles from adhering in a lump form. As a result, continuous operation can be performed for a long time. There is an effect.

[Brief description of drawings]

FIG. 1 is a side sectional view of a discharge chute of a discharge chute structure in a chain conveyor according to the present invention.

FIG. 2 is an operation explanatory view of a discharge chute structure in the chain conveyor of the present invention.

FIG. 3 is a partial schematic side view of a conventional chain conveyor.

FIG. 4 is a view on arrow AA of FIG.

FIG. 5 is a side sectional view of a discharge chute in a conventional chain conveyor.

[Explanation of symbols]

1, 12 Transportation route 2, 13 Bottom plate 3 Rails 4, 18 Chains 5a, 5b, 19 Scraping plate 6, 11 Discharge chute 7, 14 Upper chute 8, 15 Lower chute 9, 16 Hydraulic cylinder 10, 17 Gate

Front page continuation (72) Inventor Akio Murata 3-1-1 Tamama, Tamano City, Okayama Prefecture Mitsui Engineering & Shipbuilding Co., Ltd. Tamano Works

Claims (1)

[Scope of utility model registration request] 1. A rail is laid on a bottom plate of a transportation path, and a chain having a plurality of scraping plates on both side surfaces is arranged so as to move along the rail, and is opened downward on the bottom plate. In a chain conveyor provided with a discharge chute, the discharge chute structure in the chain conveyor configured to expand the discharge chute downward.