Blast furnace feeding chute

Abstract

The utility model relates to the technical field of material conveying, in particular to a blast furnace feeding chute which comprises an upstream belt and a chute body, the chute body is arranged below the upstream belt and is of a box structure, and the top of the chute body is connected with the discharging end of the upstream belt through a discharging pipe. And a discharging opening is formed in the bottom of the chute body. Materials can form a cushion layer in the box body, the materials are prevented from directly abrading the inner wall and the bottom of the chute body, and the service life of the chute body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically a blast furnace charging chute. Background Technology

[0002] In industries such as mining, metallurgy, and chemicals, it is often necessary to transport granular or powdery materials. Traditional chutes typically consist of a bottom plate and side plates on both sides of the bottom plate. The bottom plate is inclined, and the entire chute is positioned below the discharge end of the belt conveyor. Material falls onto the chute via the belt and slides down the bottom plate. However, due to the large flow of material discharged by the belt and the variety of minerals passing through it, the impact on the bottom and inner wall of the chute is relatively large, accelerating the wear of the bottom plate and side plates. Regular reinforcement and replacement of the bottom plate and side plates are required, resulting in high maintenance costs. As the discharge end of the chute wears down, uneven feeding is likely to occur, which can also cause the receiving belt below to deviate, further aggravating belt wear. During the wear process of the chute, the damaged bottom plate or side plates on the chute can easily scratch the belt, further increasing maintenance costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a blast furnace charging chute that uses a material-grinding method to pour materials by forming a cushion layer inside the chute body, thereby avoiding wear inside the chute body, improving the service life of the chute, and reducing maintenance costs.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A blast furnace charging chute includes an upstream conveyor belt and a chute body. The chute body is located below the upstream conveyor belt and has a box structure. The top of the chute body is connected to the discharge end of the upstream conveyor belt through a discharge pipe. A discharge port is provided at the bottom of the chute body.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This invention sets the chute as a box structure, so that the material initially entering the chute body accumulates inside the chute body, and the material entering later slides down along the accumulated material and is discharged from the discharge port; the material is discharged in a material-to-material manner inside the box body, which will not wear down the inner wall of the box body, extend the service life of the chute body, and reduce maintenance costs.

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] Preferably, the upper end of the feeding pipe is provided with a receiving port, the feeding end of the upstream belt extends into the inside of the receiving port, and the feeding pipe is also provided with a dust suction port, through which the feeding pipe is connected to a dust removal device.

[0010] Preferably, the chute body includes a bottom plate, a top plate, and a side plate for connecting the bottom plate and the top plate; the bottom plate is inclined and disposed below the side plate.

[0011] Preferably, the angle between the bottom plate and the downstream belt surface is 10°.

[0012] Preferably, the bottom plate has a notch 1 at one end near the downstream belt, and the side plate near the downstream belt has a notch 2 at its bottom, with notch 1 and notch 2 forming a discharge port.

[0013] Preferably, baffles are provided on the three sides of the base plate corresponding to notch one. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a half-sectional view of the chute body;

[0016] Figure 3 This is a schematic diagram showing the locations of gap one and gap two;

[0017] Figure 4 This is a schematic diagram of the installation of the baffle and the chute body;

[0018] Figure 5 This is a diagram illustrating the installation of the cleaning brush;

[0019] Explanation of reference numerals in the attached drawings: 1. Chute body; 101. Bottom plate; 102. Top plate; 103. Side plate; 104. Feed inlet; 105. Dust suction port; 106. Material receiving port; 2. Upstream conveyor belt; 3. Downstream conveyor belt; 4. Discharge pipe; 5. Discharge port; 501. Notch 1; 502. Notch 2; 6. Transparent window; 7. Baffle; 8. Guide rod; 9. Slide rod; 10. Spring; 11. Handle; 12. Cleaning brush; 13. Chute. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0021] like Figures 1 to 5 As shown, a blast furnace charging chute consists of an upstream conveyor belt 2 and a chute body 1. The chute body 1 is located below the upstream conveyor belt 2, and the upstream conveyor belt 2 is located to the right of the chute body 1. The top of the chute body 1 is connected to the discharge end of the upstream conveyor belt 2 through a discharge pipe 4. A discharge port 5 is opened at the bottom of the chute body 1 and is located at the left end of the chute body 1. The material on the upstream conveyor belt 2 falls from the discharge end into the discharge pipe 4, enters the chute body 1 through the discharge pipe 4, and then flows out from the discharge port 5 at the bottom of the chute body 1 onto the downstream conveyor belt 3.

[0022] The chute body 1 is composed of a bottom plate 101, a top plate 102, and four side plates 103 forming a box structure. The top plate 102 of the chute body 1 has a feed inlet 104 near its right end so that the material drop point of the upstream belt 2 is located slightly to the right of the middle of the bottom plate 101. The lower end of the discharge pipe 4 is sealed to the feed inlet 104. The upper end of the discharge pipe 4 has a receiving port 106 on its right side wall, and the discharge end of the upstream belt 2 extends into the interior of the receiving port 106.

[0023] In this embodiment, a dust suction port 105 is also provided on the feeding pipe 4, and the feeding pipe 4 is connected to a dust removal device through the dust suction port 105.

[0024] An observation port is also provided on the top plate 102 of the chute body 1. The observation port is located on the left side of the feed inlet 104. A transparent window 6 is installed on the observation port. In this embodiment, the transparent window 6 is transparent glass or transparent acrylic sheet.

[0025] In this embodiment, a guide rod 8 is fixedly installed between the front and rear side plates 103 of the chute body 1. A slide rod 9 is fitted on the guide rod 8 and is slidably connected to the guide rod 8. A cleaning brush 12 is fixedly connected to the slide rod 9, and the upper end of the cleaning brush 12 contacts the lower surface of the transparent window 6. A spring 10 is installed between the mounting base and the rear side plate 103 of the chute body 1. The spring 10 is fitted on the guide rod 8, and one end of the spring 10 is fixedly connected to the rear side plate 103 and the other end is fixedly connected to the mounting base.

[0026] A groove 13 is provided on the front side plate 103 of the chute body 1 corresponding to the position of the slide rod 9. The slide rod 9 passes through the groove 13 and extends to the outside of the chute body 1. A handle 11 is fixedly connected to the extension end of the slide rod 9. Pulling the handle 11 can make the slide rod 9 slide along the guide rod 8. While the slide rod 9 slides, the cleaning brush 12 cleans the bottom of the transparent window 6. When the handle 11 is released, the slide rod 9 and the cleaning brush 12 return to their original positions under the action of the spring force of the spring 10.

[0027] The base plate 101 is inclined between the side plates 103. When the base plate 101 is installed, the right end of the base plate 101 is higher than the left end, so that the angle between the base plate 101 and the surface of the downstream belt 3 is 10°.

[0028] The bottom plate 101 has a notch 501 at the left end, and the left side plate 103 has a notch 502 at the lower end corresponding to the notch 501. The notch 501 and the notch 502 are connected to form the discharge port 5.

[0029] In this embodiment, baffles 7 of the same height are installed on the three sides of notch 1 501 (excluding the three sides on the right side of notch 1 501). The height of the baffles 7 is determined according to the size of notch 1 501 and notch 2 502.

[0030] In practical application, the feeding pipe 4 is connected to a dust removal device. The material enters the feeding pipe 4 from the upstream belt 2 and falls onto the bottom plate 101 of the chute through the feeding pipe 4. The material accumulates at the bottom of the chute body 1 until the height of the material accumulation is level with the height of the baffle 7 at the notch 501. At this time, the material accumulated inside the chute body 1 forms a cushion layer. The material falling from the upstream belt 2 after this falls onto the cushion layer and slides down along the cushion layer, falling onto the downstream belt 3 through the feeding port 5.

[0031] During the material feeding process, the handle 11 is pulled periodically to slide the slide bar 9. The slide bar 9 is used to drive the cleaning brush 12 to clean the lower surface of the observation window, so that the wear condition of the baffle 7 inside the chute body 1 can be observed through the observation window.

[0032] In this embodiment, the top plate 102 of the four side plates 103 can be welded with an outer edge. The top plate 102 is detachably connected to the outer edge by a bolt assembly, so as to facilitate cleaning the material inside the chute body 1 and replacing the baffle 7.

[0033] This invention forms a cushion layer inside the chute body, allowing subsequent materials to fall directly onto the cushion layer. This material-to-material feeding method avoids friction between the material and the bottom and side plates, reducing wear on the chute body, extending its service life, and lowering maintenance costs.

[0034] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A blast furnace charging chute, comprising a chute body positioned between an upstream conveyor belt and a downstream conveyor belt, characterized in that: The chute body is a box structure. The top of the chute body is connected to the discharge end of the upstream belt through a discharge pipe; the bottom of the chute body is provided with a discharge port.

2. The blast furnace charging chute according to claim 1, characterized in that: The upper end of the feeding pipe is provided with a receiving port, and the feeding end of the upstream belt extends into the inside of the receiving port. The feeding pipe is also provided with a dust suction port, and the feeding pipe is connected to a dust removal device through the dust suction port.

3. The blast furnace charging chute according to claim 1, characterized in that: The chute body includes a bottom plate, a top plate, and side plates for connecting the bottom plate and the top plate; the bottom plate is inclined and located below the side plates.

4. The blast furnace charging chute according to claim 3, characterized in that: The angle between the bottom plate and the downstream belt surface is 10°.

5. The blast furnace charging chute according to claim 3, characterized in that: The bottom plate has a notch 1 at one end near the downstream belt, and the side plate near the downstream belt has a notch 2 at the bottom. Notch 1 and notch 2 form a discharge port.

6. The blast furnace charging chute according to claim 5, characterized in that: Baffles are provided on the three sides of the base plate corresponding to notch one.

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