A dust removal system and method

Abstract

This invention discloses a dust removal system and method applied to an underground concrete mixing plant. The system includes a purification chamber located outside the material silo of the concrete mixing plant. The purification chamber is separated from the material silo's inlet by a wall. An air inlet equipped with a filter plate is installed on the wall corresponding to the location of the material inlet. A fan is installed inside the purification chamber. The dust removal system and method provided by this invention improve the dust removal efficiency at the material silo inlet, improve the working environment, provide ventilation power for the mixing plant, and lead the reform of dust removal and ventilation methods in underground mines. It has significant potential for widespread application in underground mining enterprises.

Description

Technical Field

[0001] This invention relates to silos Dust removal The field of technology relates, in particular to a dust removal system and method. Background Technology

[0002] The silo opening of the underground concrete mixing plant is a major dust-generating point. When material transport vehicles unload premixed concrete into the silo, a large amount of cement dust is generated. Since the underground unloading chamber and roadway are single-ended and semi-enclosed, it is difficult to form a through-flow, making it difficult for dust to disperse. Cement dust will spread to the mining area and pollute the mining environment. For workers working in an environment polluted by cement dust, it is easy to cause silicosis, which seriously affects the physical and mental health of workers. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a dust removal system and method that overcomes or at least partially solves the above problems.

[0004] In a first aspect, a dust removal system is provided for use in an underground concrete mixing plant, including a purification chamber located outside the silo of the concrete mixing plant. The purification chamber is separated from the feed inlet of the silo by a wall. An air inlet equipped with a filter plate is provided on the wall at a position corresponding to the feed inlet. A fan is installed inside the purification chamber.

[0005] Optionally, the feed inlet is located at the top of the hopper, and the filter plate is located on the upper side of the feed inlet.

[0006] Optionally, the two purification chambers are respectively located on the outer sides of the silo.

[0007] Optionally, a return air well is provided outside the silo, and an air duct is formed between the return air well and the feed inlet, and the air duct is connected to the air outlet of the purification chamber.

[0008] Optionally, the cleanroom and the air duct are connected by a passage, which is located on the wall between the filter plate and the air outlet, and an inspection door is provided on the passage.

[0009] Optionally, an air damper is provided on the air duct, and the air damper is located between the inspection door and the air outlet.

[0010] Optionally, the concrete mixing plant is provided with a transport tunnel, and the feed inlet is located at the unloading end of the transport tunnel.

[0011] Optionally, a vehicle stop is provided near the feed inlet in the transport lane.

[0012] In a second aspect, a method for dust removal using the dust removal system of the first aspect is provided, comprising: during the unloading of concrete premix into the silo, starting a fan in the purification chamber, purifying cement dust generated at the inlet through a filter plate, and discharging the purified fresh air from the outlet of the purification chamber.

[0013] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0014] The dust removal system and method provided in this invention address two issues. First, during the process of unloading premixed concrete into the silo of a concrete mixing plant, a large amount of cement dust is generated, contaminating the air at the feed inlet. Under the airflow provided by the fan in the cleanroom, a negative pressure is created at the feed inlet, purifying the polluted air through a filter plate. This improves the dust removal efficiency at the silo feed inlet, enhances the working environment, and provides ventilation power for the mixing plant. Second, this invention improves the traditional dust removal arrangement method for underground mine chute-type silos, making it suitable for dust removal at the silo openings of various underground chute-type silos that generate large amounts of dust. It prevents dust from spreading and polluting the working environment of enclosed underground spaces such as tunnels and chambers, while simultaneously providing ventilation power for the unloading area at the silo opening, forming a continuous airflow. This invention leads the reform of dust removal and ventilation methods in underground mines and has significant promotional value in underground mining enterprises.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 This is a schematic diagram of a dust removal system in an embodiment of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of a dust removal system in an embodiment of the present invention. Figure 2 . Detailed Implementation

[0019] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings.

[0020] The accompanying drawings illustrate various structural schematics according to embodiments of the present disclosure. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0021] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to specific implementation methods. It should be understood that the embodiments of this disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0022] This invention provides a dust removal system for use in underground concrete mixing plants. Please refer to [link / reference]. Figure 1 This is a schematic diagram of the dust removal system in an embodiment of the present invention. Figure 1 The system includes a purification chamber 1, which is located outside the silo 2 of the concrete mixing plant. The purification chamber 1 is separated from the feed inlet 201 of the silo 2 by a wall 101. An air inlet equipped with a filter plate 3 is provided on the wall 101 at a position corresponding to the feed inlet 201. A fan 4 is installed inside the purification chamber 1.

[0023] During the process of the premixed concrete transport vehicle unloading the premixed concrete into the silo 2 of the concrete mixing plant, a large amount of cement dust is generated. The air at the feed inlet 201 is polluted by the dust. Under the airflow provided by the fan 4 in the clean room 1, the feed inlet 201 forms a negative pressure. The polluted air is purified by the filter plate 3, thereby improving the dust removal efficiency of the feed inlet 201 of the silo 2, improving the working environment, and providing ventilation power for the mixing plant.

[0024] like Figure 2 As shown, Figure 2 This is a schematic diagram of a dust removal system in an embodiment of the present invention. Figure 2 The silo 2 is an underground silo, the inlet 201 is located at the top of the underground silo, and the filter plate 3 is located on the upper side of the inlet 201.

[0025] In an optional embodiment, the two purification chambers 1 are respectively arranged on the outer sides of the silo 2, and the purification efficiency of the two purification chambers 1 is higher.

[0026] In an optional embodiment, a return air well 5 is provided outside the silo 2, forming an air duct 6 between the return air well 5 and the feed inlet 201. The air duct 6 is connected to the air outlet 102 of the purification chamber 1. Purified air is discharged into the return air well 5 through the air outlet 102 of the purification chamber 1, forming a through-flow and achieving continuous dust removal of polluted air. Specifically, the purification chamber 1 and the air duct 6 are connected by a passage located on the wall 101 between the filter plate 3 and the air outlet 102, and an inspection door 7 is provided on the passage. An air damper 8 is provided on the air duct 6, located between the inspection door 7 and the air outlet 102. When the dust removal system is operating normally, the inspection door 7 and the air damper 8 are closed, completely separating the air duct 6 from the purification chamber 1. Under the airflow power provided by the fan 4, all polluted air must pass through the filter plate 3 for dust removal before entering the purification chamber 1. During the dust removal process, the accumulated ash needs to be cleaned regularly. The cleaned ash is directly discharged into the material silo 2 of the concrete mixing plant. When cleaning the ash, the inspection door 7 and the air door 8 are opened to create natural airflow in the feed inlet 201 area, providing sufficient oxygen for the cleaning personnel.

[0027] Specifically, the concrete mixing plant is equipped with a transport tunnel 9, and the feed inlet 201 is located at the unloading end of the transport tunnel 9. The feed inlet 201 of the silo 2 is connected to different levels of tunnels through the transport tunnel 9 and the return air shaft 5. Premixed material transport vehicles unload premixed concrete into the concrete mixing plant silo 2 through the transport tunnel 9. The unloading end of the transport tunnel 9 is contaminated by dust generated during the unloading process at the feed inlet 201 of the silo 2. After the polluted air is filtered by the filter plate 3, the purified air enters the return air shaft 5 through the purification chamber 1, forming a through-flow. The dust remains at the feed inlet 201 of the silo 2. The filter plate 3 is cleaned periodically, and the dust collected is placed into the concrete mixing plant silo 2, thus achieving the purpose of dust removal at the feed inlet 201. Specifically, a vehicle stop 10 is installed near the feed inlet 201 in the transport tunnel 9.

[0028] Based on the same inventive concept, this embodiment of the invention also provides a method for dust removal using the aforementioned dust removal system, comprising: during the unloading of premixed concrete into the silo 2, starting the fan 4 in the purification chamber 1; cement dust generated at the inlet is purified by the filter plate 3; and the purified fresh air is discharged from the outlet 102 of the purification chamber 1. This dust removal method works in conjunction with the dust removal fan 4 to improve the dust removal efficiency at the inlet 201 of the silo 2, improve the unloading environment at the inlet 201, and provide ventilation power for the concrete mixing plant.

[0029] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0030] The dust removal system and method provided in this invention address two issues. First, during the process of unloading premixed concrete into the silo of a concrete mixing plant, a large amount of cement dust is generated, contaminating the air at the feed inlet. Under the airflow provided by the fan in the cleanroom, a negative pressure is created at the feed inlet, purifying the polluted air through a filter plate. This improves the dust removal efficiency at the silo feed inlet, enhances the working environment, and provides ventilation power for the mixing plant. Second, this invention improves the traditional dust removal arrangement method for underground mine chute-type silos, making it suitable for dust removal at the silo openings of various underground chute-type silos that generate large amounts of dust. It prevents dust from spreading and polluting the working environment of enclosed underground spaces such as tunnels and chambers, while simultaneously providing ventilation power for the unloading area at the silo opening, forming a continuous airflow. This invention leads the reform of dust removal and ventilation methods in underground mines and has significant promotional value in underground mining enterprises.

[0031] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0032] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

Claims

1. A dust extraction system characterised in that, The application is applied to a concrete mixing station in a pit, comprising a purification chamber, the purification chamber is arranged outside a stock bin of the concrete mixing station, the purification chamber and a feeding port of the stock bin are separated by a wall, an air inlet provided with a filter plate is arranged on the wall corresponding to the position of the feeding port, a fan is arranged in the purification chamber, a return air well is arranged outside the stock bin, an air duct is formed between the return air well and the feeding port, the air duct is communicated with an air outlet of the purification chamber, the purification chamber and the air duct are communicated through a through port, the through port is arranged on the wall between the filter plate and the air outlet, a maintenance door is arranged on the through port, an air door is arranged on the air duct, and the air door is located between the maintenance door and the air outlet. The filter plate is used to purify the cement dust generated at the feeding port during the process of turning over and unloading the concrete premix in the stock bin of the concrete mixing station. The fan is used to provide air flow power during the process of turning over and unloading the concrete premix in the stock bin of the concrete mixing station, to form negative pressure at the feeding port, to keep the dust at the feeding port of the stock bin, to discharge the fresh air purified through the filter plate from the air outlet of the purification chamber into the return air well, to form a through air flow, and to achieve the continuous dust removal effect of the dirty air. When the filter plate is cleaned, the maintenance door and the air door are opened, the natural air flow is formed in the feeding port area, sufficient oxygen is provided for the cleaning personnel, and the cleaned dust is directly discharged into the stock bin of the concrete mixing station in the pit.

2. The dust extraction system of claim 1, wherein, The feeding port is arranged on the top of the stock bin, and the filter plate is located on the upper side of the feeding port.

3. The dust extraction system of claim 1, wherein, Two purification chambers are arranged on the two sides of the stock bin.

4. The dust extraction system of claim 1, wherein, The concrete mixing station is provided with a transportation lane, and the feeding port is arranged at the unloading end of the transportation lane.

5. The dust extraction system of claim 4, wherein, A car stop is arranged near the feeding port of the transportation lane.

6. A dust removal method characterized by, The application is applied to a dust removal system of a concrete mixing station in a pit, comprising a purification chamber, the purification chamber is arranged outside a stock bin of the concrete mixing station, the purification chamber and a feeding port of the stock bin are separated by a wall, an air inlet provided with a filter plate is arranged on the wall corresponding to the position of the feeding port, a fan is arranged in the purification chamber, a return air well is arranged outside the stock bin, an air duct is formed between the return air well and the feeding port, the air duct is communicated with an air outlet of the purification chamber, the purification chamber and the air duct are communicated through a through port, the through port is arranged on the wall between the filter plate and the air outlet, a maintenance door is arranged on the through port, an air door is arranged on the air duct, and the air door is located between the maintenance door and the air outlet. The filter plate is used to purify the cement dust generated at the feeding port during the process of turning over and unloading the concrete premix in the stock bin of the concrete mixing station. By starting the fan during the unloading of the concrete premix in the silo of the concrete mixing plant, the air flow power is provided, the negative pressure is formed at the inlet, the dust is left at the inlet of the silo, the new air purified through the filter plate is discharged from the air outlet of the purification chamber into the return air well, the through air flow is formed, and the continuous dust removal effect of the dirty air is realized. When cleaning the accumulated dust on the filter plate, the access door and the air door are opened, the natural air flow is formed in the inlet area, sufficient oxygen is provided for the cleaning personnel, and the cleaned accumulated dust is directly discharged into the silo of the underground concrete mixing plant.

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