Dust suppression device at the unloading point of the chain bucket unloader

Abstract

This utility model discloses a dust suppression device for the unloading point of a chain bucket unloader, including a soft curtain and a diffuser hood. The diffuser hood has a structure that is smaller at the top and gradually expands at the bottom. A dust-suppressing and ventilation device is connected to each of the front and rear ends of the diffuser hood, and the soft curtain is connected to the bottom end of the diffuser hood. This utility model uses a diffuser-shaped hood that is smaller at the top and larger at the bottom to reduce the internal pressure generated when the material falls and contacts the lower conveyor belt. A dust-suppressing pipe is installed at the front and rear of the diffuser hood along the forward direction of the lower conveyor belt. A filter bag is installed at the top of the dust-suppressing pipe. Dust is blocked by the filter bag and falls back to the unloading point. The airflow passes through the filter bag and is discharged, preventing excessive pressure at the bottom of the diffuser hood from causing dust to overflow, thereby achieving the purpose of dust suppression at the unloading point.

Description

Technical Field

[0001] This utility model relates to a chain bucket unloader, and more particularly to a dust suppression device at the unloading point of a chain bucket unloader. Background Technology

[0002] Chain bucket unloaders have advantages such as simple structure, high efficiency, and low cost, and are increasingly used in heat source plants for unloading coal on dedicated railway lines. The working principle of a chain bucket unloader is that the chain buckets lift the coal from the train car and pour it onto the onboard conveyor belt. The onboard conveyor belt then transfers the coal through a discharge pipe to a ground-based transfer conveyor belt, which then transports the coal to the desired location. The feeding pipe is typically an 800*500mm rectangular steel structure. When the unloading machine unloads coal, it moves along its length inside the train car. To prevent the feeding pipe from colliding with the ground transfer conveyor, there is now a gap of about 100mm between the lower end of the feeding pipe and the transfer conveyor. However, due to the significant height difference between the onboard conveyor and the ground transfer conveyor (more than 3 meters), air is present in the coal flow coming down from the feeding pipe. When the coal falls onto the ground transfer conveyor, the air pressure increases due to the rapid impact of the coal. This air, mixed with coal dust, overflows from the gap between the feeding pipe and the ground transfer conveyor, polluting the environment. In severe cases, it can obstruct visibility and affect production. Utility Model Content

[0003] The purpose of this invention is to provide a dust suppression device for the unloading point of a chain bucket unloader, so as to solve the problem of large dust generation at the unloading point due to the large drop height of the material in the prior art.

[0004] To address the problems existing in the prior art, the technical solution adopted by this utility model is as follows:

[0005] The dust suppression device at the unloading point of the chain bucket unloader includes a soft curtain and a diffusion hood. The diffusion hood has a structure that is small at the top and gradually expands at the bottom. A dust suppression and ventilation device is connected to each of the front and rear ends of the diffusion hood, and the soft curtain is connected to the bottom end of the diffusion hood.

[0006] The diffusion hood includes a hood body, an upper straight cylinder, and a lower straight cylinder. The hood body is a frustum structure formed by four trapezoidal side plates. Both the upper and lower straight cylinders are cuboid structures with openings at the top and bottom. The upper straight cylinder is fixed to the top of the hood body, and the lower straight cylinder is fixed to the bottom of the hood body.

[0007] The side panels are all made of stainless steel.

[0008] The top of the upper straight cylinder is connected to a connecting flange, which is connected to the conveyor belt unloading pipe of the chain bucket unloader by bolts.

[0009] The dust suppression and ventilation device includes a dust suppression pipe and a filter bag. The filter bag is fitted onto the upper part of the dust suppression pipe, and the bottom end of the dust suppression pipe is installed on the side plate of the cover. The dust suppression pipe is connected to the inside of the diffusion cover.

[0010] The filter bag is made of industrial filter cloth.

[0011] There are two dust suppression and ventilation devices, which are installed at the center of the front and rear side panels of the cover, respectively.

[0012] The soft curtain is connected to the bottom end of the lower straight cylinder by bolts or a soft curtain clamping assembly.

[0013] The soft curtain is made of polyurethane rubber sheet.

[0014] The advantages and beneficial effects of this invention are:

[0015] This utility model discloses a dust suppression device for the unloading point of a chain bucket unloader. It has a simple structure, can suppress dust without external power, and has a good dust suppression effect. This utility model can also be applied to dust suppression at the unloading point of other high-drop-point conveyor belt machines.

[0016] This utility model adopts a diffuser-shaped protective cover with a smaller upper part and a larger lower part to reduce the internal pressure generated when the material falls and comes into contact with the lower conveyor belt. A dust-collecting pipe is set at the front and back along the forward direction of the lower conveyor belt on the diffuser cover. A filter bag is set at the upper part of the dust-collecting pipe. The dust is blocked by the filter bag and falls back to the feeding point. The airflow is discharged through the filter bag, which avoids the dust overflow due to excessive pressure at the lower part of the diffuser cover, thereby achieving the purpose of dust suppression at the feeding point.

[0017] The bottom of the diffuser of this invention is provided with a soft curtain. The soft curtain is in contact with the upper conveyor belt of the conveyor belt transfer machine on the ground, which not only plays a sealing role, but also prevents the diffuser from scratching the conveyor belt. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dust suppression device at the unloading point of the chain bucket unloader shown in Example 1;

[0019] Figure 2 This is a reference diagram showing the usage status of the dust suppression device at the unloading point of the chain bucket unloader as shown in Example 1. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] Unless otherwise specified, the experimental methods used in the following examples are conventional methods, performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Unless otherwise specified, the materials and reagents used in the following examples are commercially available. Example

[0022] like Figure 1 As shown, this embodiment provides a dust suppression device for the unloading point of a chain bucket unloader, including a soft curtain 1 and a diffuser hood 5. The diffuser hood 5 has a structure that is small at the top and gradually expands at the bottom. A dust suppression and ventilation device is connected to each of the front and rear ends of the diffuser hood 5. The bottom end of the diffuser hood 5 is connected to the soft curtain 1, which is made of polyurethane rubber sheet.

[0023] Specifically, the diffuser 5 includes a hood 51, an upper straight cylinder 52 and a lower straight cylinder 54. The hood 51 is a frustum structure formed by four trapezoidal side plates, which are made of stainless steel.

[0024] The upper straight cylinder 52 is a cuboid structure with openings at the top and bottom, formed by four stainless steel plates. The upper straight cylinder 52 is fixed to the top of the cover 51. A connecting flange 53 is connected to the top of the upper straight cylinder 52, and the connecting flange 53 is connected to the conveyor belt discharge pipe of the chain bucket unloader by bolts. The lower straight cylinder 54 is a cuboid structure with openings at the top and bottom, formed by four stainless steel plates. The lower straight cylinder 54 is fixed to the bottom of the cover 51. A flexible curtain 1 is connected to the bottom of each of the four stainless steel plates of the lower straight cylinder 54. The flexible curtain 1 can be connected to the stainless steel plate by bolts or a flexible curtain clamping assembly 2. In this embodiment, the flexible curtain 1 is connected to the stainless steel plate by the flexible curtain clamping assembly 2. The flexible curtain clamping assembly 2 used in this embodiment is a standard part in the conveyor belt industry, code OOS13-2.

[0025] Specifically, the dust suppression and ventilation device includes a dust suppression pipe 3 and a filter bag 4. The filter bag 4 is made of industrial filter cloth and is fitted onto the upper part of the dust suppression pipe 3. The bottom end of the dust suppression pipe 3 is installed on the side plate of the cover 51, and the dust suppression pipe 3 is connected to the inside of the diffusion cover 5. There are two dust suppression and ventilation devices, which are respectively installed at the center of the front and rear side plates of the cover 51.

[0026] The working principle of this utility model is as follows:

[0027] like Figure 2 As shown, the dust suppression device of this utility model is located above the conveyor belt of the ground transfer conveyor belt 6. The chain bucket unloader lifts the coal and pours it onto the ground transfer conveyor belt 6 through the dust suppression device of this utility model. Since the bottom end of the soft curtain of the dust suppression device of this utility model is in contact with the conveyor belt on the ground transfer conveyor belt 6, the dust can be sealed in the diffusion hood 5. The air is discharged through the filter bag, which avoids the dust overflow due to excessive pressure at the bottom of the diffusion hood, thereby achieving the purpose of dust suppression at the unloading point.

[0028] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A dust suppression device at the unloading point of a chain bucket unloader, characterized in that, It includes a soft curtain (1) and a diffuser (5). The diffuser (5) has a structure that is small at the top and gradually expands at the bottom. The front and rear ends of the diffuser (5) are each connected to a dust suppression and ventilation device. The bottom end of the diffuser (5) is connected to the soft curtain (1).

2. The dust suppression device at the unloading point of the chain bucket unloader according to claim 1, characterized in that, The diffusion hood (5) includes a hood body (51), an upper straight cylinder (52) and a lower straight cylinder (54). The hood body (51) is a frustum structure formed by four trapezoidal side plates. The upper straight cylinder (52) and the lower straight cylinder (54) are both cuboid structures with openings at the top and bottom. The upper straight cylinder (52) is fixed to the top of the hood body (51), and the lower straight cylinder (54) is fixed to the bottom of the hood body (51).

3. The dust suppression device at the unloading point of the chain bucket unloader according to claim 2, characterized in that, The side panels are all made of stainless steel.

4. The dust suppression device at the unloading point of the chain bucket unloader according to claim 2, characterized in that, The top of the upper straight cylinder (52) is connected to a connecting flange (53), which is connected to the conveyor belt unloading pipe of the chain bucket unloader by bolts.

5. The dust suppression device at the unloading point of the chain bucket unloader according to claim 2, characterized in that, The dust suppression and ventilation device includes a dust suppression pipe (3) and a filter bag (4). The filter bag (4) is fitted onto the upper part of the dust suppression pipe (3). The bottom end of the dust suppression pipe (3) is installed on the side plate of the cover (51). The dust suppression pipe (3) is connected to the inside of the diffuser cover (5).

6. The dust suppression device at the unloading point of the chain bucket unloader according to claim 5, characterized in that, The filter bag (4) is made of industrial filter cloth.

7. The dust suppression device at the unloading point of the chain bucket unloader according to claim 1, characterized in that, The dust suppression and ventilation device consists of two units, which are respectively installed at the center of the front and rear side panels of the cover (51).

8. The dust suppression device at the unloading point of the chain bucket unloader according to claim 2, characterized in that, The soft curtain (1) is connected to the bottom end of the lower straight tube (54) by bolts or a soft curtain clamping assembly (2).

9. The dust suppression device at the unloading point of the chain bucket unloader according to claim 1, characterized in that, The soft curtain (1) is made of polyurethane rubber sheet.

Images