A dust removal system for a dumper house in a cold region
By installing an upper and lower airtight enclosure in the tippler room, combined with bag filters and electrostatic precipitators, the problem of poor dust suppression effect in dry fog in frigid regions was solved, achieving efficient dust removal and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGYUN INTERNATIONAL ENGINEERING CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-10
AI Technical Summary
Existing dry fog dust suppression methods are ineffective in extremely cold regions, the equipment is prone to icing, and they are not suitable for materials with high powder content, such as pellets, resulting in low dust removal efficiency and equipment damage.
The tippler room is equipped with an upper and lower sealed hood, and dust removal is carried out by combining bag filters and electrostatic precipitators, avoiding the use of water mist and improving dust removal efficiency.
It achieves efficient dust removal in extremely cold regions, prevents equipment from freezing, improves dust removal efficiency, is suitable for materials with high powder content, and extends equipment life.
Smart Images
Figure CN224475123U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal technology in coal transportation, specifically to a dust removal system for tippler rooms in extremely cold regions. Background Technology
[0002] Existing dust suppression methods for tippler rooms mostly employ dry fog, which is effective for materials like coal. However, for other bulk materials such as ore pellets, due to their high powder content, dry fog cannot handle the explosive dust generated during tipping. Furthermore, dry fog equipment is severely affected by ambient temperature. When water mist dissipates below freezing, the electrostatic adsorption effect decreases significantly, and the site becomes slippery, causing equipment to freeze and shorten its lifespan. Moreover, in extremely cold regions, water is difficult to retain due to the temperature, and the expansion of frozen water below freezing can damage water pipes. Therefore, dry fog is not suitable for large-scale application in extremely cold regions. Thus, a dust suppression system for tippler rooms suitable for extremely cold regions needs to be designed. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a dust removal system for tipper rooms in extremely cold regions. By setting an upper sealed cover above the platform and a lower sealed measure below the platform, the dust removal efficiency is greatly improved, making it suitable for extremely cold regions.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dust removal system for a tipper room in extremely cold regions, comprising an upper sealed hood set above a platform, a lower sealed measure set below the platform, and a dust collector for absorbing dust-laden gas inside the upper sealed hood and the lower sealed measure; the end of the dust collector extends into the upper sealed hood and the lower sealed measure.
[0005] Furthermore, the dust collector includes several dust collection ports, with dust collection ports located on both sides of the upper sealed hood and on both sides of the lower sealed hood.
[0006] Furthermore, the dust collection ports include a first dust collection port corresponding to the left side of the upper sealed cover, a second dust collection port corresponding to the right side of the upper sealed cover, a third dust collection port corresponding to the left side of the lower sealed cover, and a fourth dust collection port corresponding to the right side of the lower sealed cover.
[0007] Furthermore, the lower-level sealing measures include a lower sealing wall connected in sequence on all four sides.
[0008] Furthermore, a tipper is arranged above the platform, and the upper sealed cover includes a top beam set above the tipper, two upper sealing walls set on the front and rear sides of the top beam respectively, a first sealing wall set on the left side of the top beam, and a second sealing wall set on the right side of the top beam.
[0009] Furthermore, the upper sealing walls on the front and rear sides of the top beam can be rolled up.
[0010] Furthermore, the bottom of the first sealing wall is fixedly connected to the platform, and the top is fixedly connected to the top beam; the top of the second sealing wall is fixedly connected to the top beam, and the bottom is spaced apart from the platform.
[0011] Furthermore, it also includes a fan, which is fixedly connected to the dust collector through a second connecting pipe. The first dust collection port, the second dust collection port, the third dust collection port and the fourth dust collection port are all fixedly connected to the dust collector.
[0012] Furthermore, the dust collector consists of an electrostatic precipitator and a bag filter.
[0013] The beneficial effects of this utility model are as follows: This utility model sets up an upper sealed cover above the platform to surround the working space of the tipper, and sets up a lower sealed measure below the platform to constrain the dust-laden gas generated by the coal falling into the coal hopper. It does not require water, avoids the freezing problem of traditional dry fog dust suppression in cold regions, improves dust removal efficiency, and reasonably avoids the problems of easy freezing of dust removal equipment in the original tipper room, causing equipment damage and ground icing. Due to the operating angle of the tipper, transient material flow generates dust, and the air flow is large. The use of bag-electrostatic hybrid dust collector for dust removal greatly improves the dust removal efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure viewed from the front.
[0015] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;
[0016] Figure 3 This is a schematic diagram of the dust removal structure.
[0017] In the diagram: 1. Platform; 2. Upper enclosed hood; 3. Tipper; 4. Dust collector; 5. Main pipeline; 6. First connecting pipe; 7. First dust collection port; 8. Second dust collection port; 9. Third dust collection port; 10. Fourth dust collection port; 11. Top beam; 12. Motor; 13. First sealing wall; 14. Second sealing wall; 15. Lower sealing measures; 16. Coal hopper; 17. Fan; 18. Second connecting pipe. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.
[0020] Example:
[0021] like Figures 1-3 As shown, a dust removal system for a tippler room in extremely cold regions is located above and below a platform 1 inside the tippler room. It includes an upper sealed hood 2 positioned above the platform 1, a lower sealed structure 15 positioned below the platform 1, and a dust collector 4 for absorbing dust-laden gas from inside the upper sealed hood 2 and the lower sealed structure 15. The dust collector 4 extends into the upper sealed hood 2 and the lower sealed structure 15. Figure 1 The front view is shown, and the left, right, front, and rear directions are defined. Inside the upper sealed cover 2 is the tipper 3, and directly below the tipper 3 is the coal hopper 16.
[0022] Based on the structural characteristics of tipper 3 and the specific dimensions of the tipper room, the design of the enclosed enclosure is mainly divided into two parts: the first is the lower enclosed enclosure 15 to enclose the area between the tipper platform and the material falling screen (i.e., the area between ±0.000m plane and -3.000m plane); the second is the upper enclosed enclosure 2 to enclose the area of the tipper above ±0.000m.
[0023] When tipper 3 starts tipping, the unloading is slow, the material has little impact on the coal hopper 16, and the amount of dust is not large. As tipper 3 continues to rotate and tip the car, the unloading volume gradually increases until the material in the transport car is completely emptied. When the tipper 3 tilts between 100° and 165°, the material rapidly unloaded into the coal hopper 16 induces and draws in a large amount of air, creating positive pressure inside the coal hopper 16. As material is continuously unloaded, induced air continuously rushes in, and the positive pressure continuously increases. Under the action of positive pressure, the dust-laden gas rapidly diffuses to the surroundings to release energy. Because of the obstruction of the wall on the tipper unloading side, the amount of dust-laden gas that breaks through and diffuses to the tipper side is relatively larger. Although the dust emission on the tipper unloading side is relatively small, the amount of dust is still considerable.
[0024] The dust collector 4 includes several dust collection ports, with dust collection ports provided on both sides of the upper sealed cover 2 and on both sides of the lower sealed measure 15.
[0025] The dust collection ports include a first dust collection port 7 corresponding to the left side of the upper sealed cover 2, a second dust collection port 8 corresponding to the right side of the upper sealed cover 2, a third dust collection port 9 corresponding to the left side of the lower sealed measure 15, and a fourth dust collection port 10 corresponding to the right side of the lower sealed measure 15; the third dust collection port 9 and the fourth dust collection port 10 are both located above the coal hopper 16.
[0026] The lower sealing measure 15 includes four lower sealing walls connected in sequence; the four lower sealing walls vertically surround the tippler 3; the underground part of the platform 1 (between ±0.000m plane and -3.000m plane) is sealed. The specific setting method of the lower sealing measure 15 is as follows: it mainly uses the four columns under the platform, and uses steel structure such as color steel plate or acrylic plate as the lower sealing wall to enclose the four sides through the columns. Air intake is opened on the two underground sides of the tippler 3 for exhaust. In order not to affect the operation of the tippler 3, a small single-opening maintenance door is set at an appropriate position on the lower sealing measure, and an observation window is provided so that the operators can observe the operation of the equipment and solve problems in time.
[0027] A tipper 3 is arranged above the platform 1. The upper sealed cover 2 includes a top beam 11 arranged above the tipper 3, two upper sealing walls arranged on the front and rear sides of the top beam 11 respectively, a first sealing wall 13 arranged on the left side of the top beam 11, and a second sealing wall 14 arranged on the right side of the top beam 11. The two upper sealing walls and the first sealing wall 13 and the second sealing wall 14 vertically surround the tipper 3.
[0028] The upper sealing walls on the front and rear sides of the top beam 11 can be rolled up; the upper sealing walls on the front and rear sides of the top beam 11 can be soft curtains or electrically operated doors; these two upper sealing walls can be made of materials such as PET fiber, polyester fiber, polyurethane, EPDM rubber, PVC, silicone or rubber-plastic composite materials for easy rolling up; the top beam 11 is equipped with a motor 12 for driving the two upper sealing walls to roll up; the motor 12 is connected to a rotating shaft, the top of the two upper sealing walls is fixed to the rotating shaft, and then rolled up around the rotating shaft. When sealing, the rotating shaft is rotated to lower the two upper sealing walls.
[0029] The first sealing wall 13 is fixedly connected to the platform 1 at the bottom and to the top beam 11 at the top; the second sealing wall 14 is fixedly connected to the top beam 11 at the top and spaced apart from the platform 1 at the bottom, to accommodate the tipper entering the sealed enclosure for operation. To avoid sealing the tipper inside the upper sealed enclosure and to ensure its operation, the second sealing wall 14 on the tipper side of the upper sealed enclosure is not anchored to the ground, but rather to the top beam 11 of the upper sealed enclosure, leaving sufficient space for the tipper to operate upwards from the ground. Because the space for the tipper's operation cannot be sealed with a wall, as dust would escape from this point, an air curtain is used to seal the opening to prevent dust from escaping. This achieves a complete seal on all four sides of the tipper's ground surface.
[0030] It also includes a fan 17, which is fixedly connected to the dust collector 4 through a second connecting pipe 18. The first dust collection port 7, the second dust collection port 8, the third dust collection port 9, and the fourth dust collection port 10 are all fixedly connected to the dust collector 4. Specifically, the dust collector 4 is fixedly connected to one end of the main pipe 5, and the first dust collection port 7, the second dust collection port 8, the third dust collection port 9, and the fourth dust collection port 10 are all fixedly connected to the main pipe 5 through a first connecting pipe 6. The dust collector 4 is equipped with an exhaust pipe, and the outlet of the fan 17 is connected to the exhaust pipe. The exhaust pipe is placed close to the wall, and according to the specifications, the height of the exhaust pipe is more than 5m above the building.
[0031] Dust collector 4 consists of an electrostatic precipitator and a bag filter. Specifically, the electrostatic precipitator and bag filter are modified using a bag filter. Only one electric field in the electrostatic precipitator needs to be removed. After removing the cathode and cation systems from the end of the dust collector, the dust collector, made of filter cloth and a frame, is placed inside, parallel to the flue gas direction, and fixed to the crossbeam. This completes the modification of the electrostatic precipitator. After modification, the dust collector has two independent units. The first unit is a conventional electrostatic precipitator with 1-2 electric fields, and the second unit is a bag filter. These two dust collection units are sealed inside the original casing of the electrostatic precipitator without increasing the floor space. Compared to the original electrostatic precipitator, the electrostatic precipitator and bag filter have greater resistance after modification. In actual operation, the induced draft fan head needs to be increased to ensure normal system operation. Electrostatic precipitators and bag filters can be combined into electrostatic-bag composite dust collectors. This technology is mature and has been successfully applied in power plants, metallurgy and other industries. Many power plants in China have adopted similar modifications, such as changing the 4-field ESP to "2-field + bag filter", which can reduce the emission concentration to below 10 mg / Nm³.
[0032] By setting up an upper sealed hood above the platform to surround the tipper's working space, and setting up a lower sealed measure below the platform to confine the dust-laden gas generated by the coal falling into the coal hopper, water is not required, and dust removal efficiency is greatly improved. It is suitable for extremely cold regions and reasonably avoids the problems of freezing, equipment damage, and ground icing that are common in the original tipper room dust removal equipment. Due to the tipper's operating angle, transient material flow generates dust, and the air flow is relatively large. The use of a bag filter-electrostatic hybrid dust collector for dust removal greatly improves dust removal efficiency.
[0033] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A dust removal system for a tippler room in extremely cold regions, characterized in that: It includes an upper enclosure (2) disposed above the platform (1), a lower enclosure (15) disposed below the platform (1), and a dust collector (4) for absorbing dust-laden gas inside the upper enclosure (2) and the lower enclosure (15); the end of the dust collector (4) extends into the upper enclosure (2) and the lower enclosure (15).
2. The dust removal system for a tippler room in frigid regions according to claim 1, characterized in that: The dust collector (4) includes several dust collection ports, and dust collection ports are provided on the left and right sides of the upper sealed cover (2) and on the left and right sides of the lower sealed measure (15).
3. The dust removal system for a tippler room in frigid regions according to claim 2, characterized in that: The dust collection ports include a first dust collection port (7) corresponding to the left side of the upper sealed cover (2), a second dust collection port (8) corresponding to the right side of the upper sealed cover (2), a third dust collection port (9) corresponding to the left side of the lower sealed measure (15), and a fourth dust collection port (10) corresponding to the right side of the lower sealed measure (15).
4. The dust removal system for a tippler room in frigid regions according to claim 1, characterized in that: The lower sealing measure (15) includes a lower sealing wall set on all four sides.
5. A dust removal system for a tippler room in extremely cold regions according to claim 1, characterized in that: The platform (1) is equipped with a tipper (3). The upper sealed cover (2) includes a top beam (11) above the tipper (3), two upper sealing walls respectively set on the front and rear sides of the top beam (11), a first sealing wall (13) set on the left side of the top beam (11), and a second sealing wall (14) set on the right side of the top beam (11).
6. A dust removal system for a tippler room in extremely cold regions according to claim 5, characterized in that: The upper sealing walls on the front and rear sides of the top beam (11) can be rolled up.
7. A dust removal system for a tippler room in extremely cold regions according to claim 5, characterized in that: The bottom of the first sealing wall (13) is fixedly connected to the platform (1) and the top is fixedly connected to the top beam (11); the top of the second sealing wall (14) is fixedly connected to the top beam (11) and the bottom is spaced apart from the platform (1).
8. A dust removal system for a tippler room in extremely cold regions according to claim 3, characterized in that: It also includes a fan (17), which is fixedly connected to the dust collector (4) through a second connecting pipe (18). The first dust collection port (7), the second dust collection port (8), the third dust collection port (9) and the fourth dust collection port (10) are all fixedly connected to the dust collector (4).
9. A dust removal system for a tippler room in frigid regions according to claim 1, characterized in that: The dust collector (4) consists of an electrostatic precipitator and a bag filter.