A dust gas cleaning device for an iron oxide pulverizing plant

Abstract

The utility model discloses a dust gas purification device for iron oxide powder crushing workshop, including the gas purification tank, this gas purification tank is arranged as the circular box structure of horizontal placement, and the right side box wall of gas purification tank is installed with the air inlet pipe, and the left side box wall is installed with the air outlet pipe, still be provided with a plurality of annular areas recessed to the box body on the gas purification tank, and the area between adjacent annular areas is arranged as the mounting area, and the rotatable circular screen board is installed in the mounting area, and the dust gas that enters from the air inlet pipe of the right side of gas purification tank is discharged from the air outlet pipe of the left side of gas purification tank after passing through several layers of circular screen board. In the device, dust in dust gas is treated by wet method, mainly through installing and setting multiple circular screen boards in the gas purification tank to realize the purification of gas, and the specific form is that after water injection is formed on the circular screen board to form a water curtain, the entering dust gas passes through the circular screen board and is removed with water body immersion and settlement, and the structure is reasonable, and the dust treatment effect and quality are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of iron oxide preparation technology, specifically a dust purification device for an iron oxide pulverizing workshop. Background Technology

[0002] In existing technologies, the production of iron oxide requires pulverizing it into powder using pulverizing equipment to facilitate subsequent operations. However, the pulverization process inevitably generates a large amount of fine iron oxide powder, which is difficult to handle when mixed in the air and can seriously affect the safety of operators and air quality. Therefore, dust purification in iron oxide pulverizing workshops is a crucial step in ensuring workshop air quality, protecting the health of operators, and meeting environmental protection requirements. Iron oxide dust, mainly composed of Fe2O3, has certain irritant and polluting properties, and long-term inhalation may lead to respiratory diseases. At the same time, dust emissions also affect the surrounding environment.

[0003] In existing technologies, iron oxide dust is mostly red or brownish-red particles. The dust generated during the crushing process has a wide range of particle sizes, usually 1-100μm. Among them, respirable dust with a particle size of <5μm is the most harmful, as it is easy to penetrate deep into the lungs and deposit. The dust concentration in the crushing workshop is high. If it is not treated in time, it is easy to form a dust cloud, and there is even a risk of secondary dust generation.

[0004] In existing technologies, common iron oxide pulverizing workshops address dust and gas pollution by controlling the process at its source. This involves placing the iron oxide pulverizing equipment in a relatively sealed space to prevent dust and gas from entering the workshop. However, the gas generated inside the pulverizing equipment still requires purification, necessitating the installation of treatment equipment. Existing treatment equipment typically employs wet methods, primarily using water films, sprays, or foam to contact the dust, causing it to settle and be removed from the dusty gas.

[0005] For example, the "Iron Oxide Dust Recovery Device" disclosed in application publication number CN114054458A can effectively attract iron oxide dust in the air of key areas of the production site, with high dust collection efficiency. By treating the airflow containing iron oxide dust through multiple stages in the recovery tower, the dust recovery effect is good, and the recovered iron oxide dust can be reused, saving raw materials and reducing production costs. It does not generate waste gas, wastewater, or solid waste, effectively protecting the environment. This technical solution uses a wet method to send the collected dust gas into the recovery tower for dust removal via spraying. However, the spraying in this solution is achieved through spray pipes, which can lead to uneven spraying, especially with dead zones and uneven spray positions. This results in poor dust removal quality, incomplete dust removal, and significantly affects the treatment effect and quality.

[0006] Therefore, in order to solve the above problems, it is necessary to develop a dust purification device for iron oxide crushing workshops with a reasonable structure that improves dust treatment efficiency and quality. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a dust purification device for iron oxide pulverizing workshops; the technical solution is as follows:

[0008] A dust purification device for an iron oxide pulverizing workshop includes a purification box, which is a horizontally placed circular box structure. The purification box is sealed, with an inlet pipe installed on the right side wall and an outlet pipe installed on the left side wall. The purification box also has several annular regions recessed into the box, and the area between adjacent annular regions is designated as an installation area. A rotatable circular mesh plate is installed in the installation area. Dust gas entering from the inlet pipe on the right side of the purification box passes through several layers of circular mesh plates and is discharged from the outlet pipe on the left side of the purification box.

[0009] A water inlet pipe is installed above the air purification box, and a water outlet pipe is installed below the air purification box. The water inlet pipe is connected to the upper end of each installation area, and the water outlet pipe is connected to the lower end of each installation area. Clean water is sent into the installation area through the water inlet pipe, sprayed onto the circular mesh plate, flows from the circular mesh plate to the lower end of the installation area, and is then discharged from the water outlet pipe.

[0010] Furthermore, a rotary motor is installed on the left or right side wall of the clean air chamber. The main shaft of the rotary motor extends laterally into the clean air chamber and passes through the circular mesh plate. The main shaft is fixed to the circular mesh plate, and the other side of the main shaft is installed via a bearing. The rotary motor drives the circular mesh plate to rotate within the installation area. The rotary motor in this device is mainly used to drive the circular mesh plate to rotate. The circular mesh plate is fixed on the main shaft of the rotary motor. Both the rotary motor and the circular mesh plate exist in the prior art, and the rotation speed of the rotary motor can be set to be relatively small.

[0011] Furthermore, the air inlet pipe is installed at the lower end of the right side wall of the clean air chamber, and the air outlet pipe is installed at the upper end of the left side wall of the clean air chamber. In this device, since the rotary motor and main shaft are installed in the middle of the clean air chamber, it is necessary to set the air inlet pipe at the lower end of the right side wall of the clean air chamber and the air outlet pipe at the upper end of the left side wall of the clean air chamber. This structure is more reasonable, and fans or other equipment can also be installed on the air inlet or air outlet pipe to guide the airflow in and out. The structure is reasonably designed.

[0012] Furthermore, the right side of the clean air box is provided with an air inlet area connected to the air inlet pipe, and the left side of the clean air box is provided with an air outlet area connected to the air outlet pipe. The corresponding air inlet and air outlet areas are provided in this device to provide a certain buffer space and area for the dust gas, making the flow direction of the dust gas more reasonable and preventing the accumulation of dust gas.

[0013] Furthermore, an annular surrounding plate is provided at the edge of the circular mesh plate, which surrounds the circular mesh plate. The surrounding plate is designed as an inwardly concave V-shaped plate structure, and the surrounding plate is also provided with evenly distributed water inlet holes. Clean water entering from the water inlet pipe falls onto the surrounding plate and enters the inner circular mesh plate through the water inlet holes on the surrounding plate. Driven by the rotating motor, the circular mesh plate rotates to form a water curtain, and the dust gas passes through the circular mesh plate accordingly.

[0014] Furthermore, the position of the water inlet pipe in each installation area is located in the middle of the V-shaped plate of the surrounding plate, and the clean water entering through the water inlet pipe flows into the V-shaped plate. The V-shaped plate is designed to guide the clean water into the inner circular mesh plate, so it is set into a V-shaped structure and the position is also corresponding.

[0015] Furthermore, three installation areas and three circular mesh plates are provided. The structural design and quantity of the installation areas and circular mesh plates in this device are related to the overall dust treatment effect and quality of the device. Therefore, it is necessary to set an appropriate number of installation areas and the overall structure needs to be reasonable.

[0016] Beneficial effects: This utility model has the following beneficial effects:

[0017] 1) This device uses a wet method to treat dust in the dusty gas. It mainly achieves air purification by installing multiple circular mesh plates in the clean air box. Specifically, water is injected into the circular mesh plates to form a water curtain. The dusty gas enters and passes through the circular mesh plates. After being soaked in the water, the dust is removed by sedimentation. The structure is reasonable and effectively improves the dust treatment effect and quality.

[0018] 2) An annular area is set inside the air purification box of this device, which forms the installation area. The circular mesh plate is set in the installation area to ensure the entry and exit of water. Water will not splash or be lost in the air purification box.

[0019] 3) The circular screen plate in this device is also designed to be rotatable. By setting a rotating motor on the outside, the circular screen plate can be rotated accordingly. The water will form a flowing and rotating water curtain on the circular screen plate without dead corners, which can effectively improve the dust removal effect and quality.

[0020] 4) The rotation speed of the circular mesh plate in this device can be adjusted and will not be too fast. Therefore, after rotation, the water body can form a more uniform water curtain, and the dust gas can pass through the mesh of the circular mesh plate more evenly, thus improving the air purification effect.

[0021] 4) The device also includes a circular mesh plate structure, especially the surrounding plate which is surrounded by a baffle plate. The baffle plate has a reasonable structural design. On the one hand, it can protect the entire circular mesh plate. On the other hand, the baffle plate can be set in a V-shaped structure with evenly distributed water inlet holes, which can make the water enter more evenly and the structure more reasonable. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present utility model;

[0023] Figure 2 This is a diagram showing the installation position of the rotating mechanism in this utility model;

[0024] Figure 3 This is a structural diagram of the air purification box in this utility model;

[0025] Figure 4 This is a front view of the circular mesh plate in this utility model.

[0026] Figure 5 This is a vertical cross-sectional view of the circular mesh plate in this utility model;

[0027] Among them, there are air purification box 1, air inlet pipe 2, air outlet pipe 3, annular area 4, installation area 5, circular mesh plate 6, water inlet pipe 7, water outlet pipe 8, rotary motor 9, main shaft 10, bearing component 11, air inlet area 12, air outlet area 13, surrounding plate 14, and water inlet hole 15. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] like Figure 1 and Figure 2 As shown, a dust purification device for an iron oxide crushing workshop includes a purification box 1, which is a horizontally placed circular box structure. The purification box 1 is sealed, and an air inlet pipe 2 is installed on the right side wall of the purification box 1, and an air outlet pipe 3 is installed on the left side wall. The purification box 1 is also provided with several annular regions 4 that are recessed into the box. The area between adjacent annular regions 4 is set as an installation area 5, and a rotatable circular mesh plate 6 is installed in the installation area 5. The dust gas entering from the air inlet pipe 2 on the right side of the purification box 1 passes through several layers of circular mesh plates 6 and is discharged from the air outlet pipe 3 on the left side of the purification box 1.

[0030] A water inlet pipe 7 is installed above the air purification box 1, and a water outlet pipe 8 is installed below the air purification box 1. The water inlet pipe 7 is connected to the upper end of each installation area 5, and the water outlet pipe 8 is connected to the lower end of each installation area 5. Clean water is sent into the installation area 5 through the water inlet pipe 7, sprayed onto the circular mesh plate 6, flows from the circular mesh plate 6 to the lower end of the installation area 5, and is then discharged from the water outlet pipe 8.

[0031] A rotary motor 9 is installed on the left or right side wall of the clean air box 1. The main shaft 10 of the rotary motor 9 extends laterally into the clean air box 1 and passes through the circular mesh plate 6. The main shaft 10 is fixed to the circular mesh plate 6. The other side of the main shaft 10 is installed through the bearing 11. The rotary motor 9 drives the circular mesh plate 6 to rotate in the installation area 5.

[0032] The air inlet pipe 2 is installed at the lower end of the right side wall of the clean air box 1, and the air outlet pipe 3 is installed at the upper end of the left side wall of the clean air box 1; the right side of the clean air box 1 is provided with an air inlet area 12 that communicates with the air inlet pipe 2, and the left side of the clean air box 1 is provided with an air outlet area 13 that communicates with the air outlet pipe 3.

[0033] A ring-shaped surrounding plate 14 is provided at the edge of the circular mesh plate 6, which surrounds the circular mesh plate 6. The surrounding plate 14 is set as an inwardly concave V-shaped plate structure, and the surrounding plate 14 is also provided with evenly distributed water inlet holes 15. Clean water entering from the water inlet pipe 7 falls onto the surrounding plate 14 and enters the inner circular mesh plate 6 through the water inlet holes 15 on the surrounding plate 14. Under the drive of the rotary motor 9, the circular mesh plate 6 rotates to form a water curtain, and the dust gas passes through the circular mesh plate 6 accordingly.

[0034] The position of the water inlet pipe 7 on each installation area 5 is located in the middle of the V-shaped plate of the surrounding plate 14. The clean water entering through the water inlet pipe 7 flows into the V-shaped plate. There are three installation areas 5 and three circular mesh plates 6.

[0035] like Figure 1 As shown, the technical solution of this device is based on the same principle as the wet dust removal method in the prior art. It removes dust by contacting water with the dusty gas, causing the dust to settle. However, the structure of this device differs from that of the prior art. Firstly, the clean air chamber 1 in this device is horizontally arranged and has a circular structure. An inwardly recessed annular area 4 forms the installation area 5, where a circular mesh plate 6 with corresponding mesh holes is placed. An air inlet pipe 2 is located on the right side wall of the clean air chamber 1, and an air outlet pipe 3 is located on the left side wall. The dusty gas entering through the air inlet pipe 2 passes through the mesh holes on the circular mesh plate 6 and is then discharged through the air outlet pipe 3. Simultaneously, a water inlet pipe 7 is installed at the upper end of the installation area 5 of the clean air chamber 1, and a water outlet pipe 7 is installed at the lower end of the installation area 5. In practical use, clean water first enters through the inlet pipe 7 and is sprayed onto the circular mesh plate 6, forming a water curtain. When dusty gas passes through the circular mesh plate 6, the dust particles in the gas come into contact with the water, thus being wetted and flowing downwards with the water. Finally, it flows downwards along the installation area 5 and is discharged from the outlet pipe 8 for reuse. In this device, because the installation area 5 is set, the circular mesh plate 6 is correspondingly embedded in the installation area 5, and the inlet pipe 7 is also correspondingly set at the upper end of the installation area 5. The drain pipe is set at the lower end of the installation area 5. After the clean water enters, it can be determined that it will be sprayed onto the circular mesh plate 6 within the installation area 5 without large-scale deviation. Moreover, the wastewater that has absorbed the dust can also flow downwards along the installation area 5 and be discharged from the drain pipe. The structural design is very reasonable.

[0036] like Figure 2 and Figure 3As shown, the circular mesh plate 6 in installation area 5 of this device is designed to be rotatable. The rotation capability of the central circular mesh plate 6 is mainly achieved by a rotary motor 9. The horizontally designed circular air purification box 1 is specifically designed to accommodate the rotary motor 9. Therefore, the rotary motor 9 can be directly installed on one side of each end of the air purification box 1. The main shaft 10 of the rotary motor 9 can then extend horizontally into the air purification box 1, and the main shaft 10 can be directly fixed to the circular mesh plate 6. The rotary motor 9 then drives the circular mesh plate 6 to rotate. During the rotation of the circular mesh plate 6, water entering from the inlet pipe 7 sprays onto the circular mesh plate 6. The water follows the rotation of the circular mesh plate 6, resulting in a more uniform water curtain formed on the circular mesh plate 6 without any dead corners. Regardless of where the dust or gas enters the mesh of the circular screen plate 6, it can be wetted by the water curtain and settle, effectively improving the efficiency and quality of dust removal. The rotation speed of the rotary motor 9 in this device should not be too fast; it should only maintain a certain rotation speed for the circular screen plate 6. Strong centrifugal force is not required from the circular screen plate 6. Furthermore, since the circular screen plate 6 is located within the installation area 5 and is not an open structure, even when the circular screen plate 6 is rotating, the water sprayed from the inlet pipe 7 onto the circular screen plate 6 will not splash. The water remains concentrated within the installation area 5 and can be easily discharged from the lower end of the installation area 5. The water will not spread to other locations; it remains only within the installation area 5, making the structure more rational.

[0037] like Figure 4 and Figure 5As shown, this device also includes a circular mesh plate 6. The design of the circular mesh plate 6 in this device is similar to that of existing fence mesh plates, metal mesh plates, stainless steel mesh plates, etc. The overall circular mesh plate 6 can be designed as a relatively thick, integral mesh structure with perforated mesh openings inside, enabling gas flow. This is a common technical solution in the prior art, therefore the specific structure will not be described in detail. However, the mesh plate structure is indeed a common structural form in the prior art. This device provides an annular surrounding plate 14 at the outer edge of the mesh plate structure. The main purpose is to completely surround the circular mesh plate 6 using the surrounding plate 14. Furthermore, the surrounding plate 14 needs to be designed as an inwardly concave V-shaped structure. The position is set to correspond to the position of the water inlet pipe 7, and the water inlet holes 15 are evenly distributed on the surrounding plate 14 accordingly. The purpose of this design is to ensure that the clean water entering through the water inlet pipe 7 can enter the circular mesh plate 6 more evenly, and that the water will not be wasted or lost from the side. This ensures that all the water entering the circular mesh plate 6 flows into the circular mesh plate 6. Similarly, the wastewater flowing out of the circular mesh plate 6 can flow downward from both sides into the installation area 5 and then be discharged from the drain pipe. It can also flow out from the V-shaped surrounding water inlet holes 15. On the one hand, this ensures the rotation of the surrounding plate 14 and the circular mesh plate 6 inside the surrounding plate 14; on the other hand, it ensures the entry and exit of water. The structural design is very reasonable and effective.

[0038] The above-described specific embodiments are merely preferred embodiments of this utility model and are not intended to limit the implementation of this utility model or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of protection of this utility model patent application should be included within the scope of this utility model patent application.

Claims

1. A dust purification device for an iron oxide pulverizing workshop, characterized in that: The system includes a clean air box (1), which is a horizontally placed circular box structure. The clean air box (1) is sealed, and an air inlet pipe (2) is installed on the right side wall of the clean air box (1), and an air outlet pipe (3) is installed on the left side wall. The clean air box (1) is also provided with several annular regions (4) that are recessed into the box. The area between adjacent annular regions (4) is set as an installation area (5), and a rotatable circular mesh plate (6) is installed in the installation area (5). The dust gas entering from the air inlet pipe (2) on the right side of the clean air box (1) passes through several layers of circular mesh plates (6) and is discharged from the air outlet pipe (3) on the left side of the clean air box (1). A water inlet pipe (7) is provided above the air purification box (1), and a water outlet pipe (8) is provided below the air purification box (1). The water inlet pipe (7) is connected to the upper end of each installation area (5), and the water outlet pipe (8) is connected to the lower end of each installation area (5). Clean water is sent into the installation area (5) through the water inlet pipe (7), and the clean water is sprayed onto the circular mesh plate (6). The water flows from the circular mesh plate (6) to the lower end of the installation area (5) and is then discharged from the water outlet pipe (8).

2. The dust purification device for an iron oxide pulverizing workshop according to claim 1, characterized in that: A rotary motor (9) is installed on the left or right side wall of the clean air box (1). The main shaft (10) of the rotary motor (9) extends laterally into the clean air box (1) and passes through the circular mesh plate (6). The main shaft (10) is fixed to the circular mesh plate (6). The other side of the main shaft (10) is installed through a bearing (11). The rotary motor (9) drives the circular mesh plate (6) to rotate in the installation area (5).

3. A dust purification device for an iron oxide pulverizing workshop according to claim 2, characterized in that: The air inlet pipe (2) is installed at the lower end of the right side wall of the clean air box (1), and the air outlet pipe (3) is installed at the upper end of the left side wall of the clean air box (1).

4. A dust purification device for an iron oxide pulverizing workshop according to claim 3, characterized in that: The air purifier (1) has an air intake area (12) connected to the air intake pipe (2) on the right side and an air outlet area (13) connected to the air outlet pipe (3) on the left side.

5. A dust purification device for an iron oxide pulverizing workshop according to claim 3, characterized in that: An annular surrounding plate (14) is provided at the edge of the circular mesh plate (6). The surrounding plate (14) surrounds the circular mesh plate (6) and is configured as an inwardly concave V-shaped plate structure. The surrounding plate (14) is also provided with evenly distributed water inlet holes (15). Clean water entering from the water inlet pipe (7) falls onto the surrounding plate (14) and enters the inner circular mesh plate (6) through the water inlet holes (15) on the surrounding plate (14). Under the drive of the rotary motor (9), the circular mesh plate (6) rotates to form a water curtain, and the dust gas passes through the circular mesh plate (6) accordingly.

6. A dust purification device for an iron oxide pulverizing workshop according to claim 5, characterized in that: The position of the water inlet pipe (7) on each installation area (5) is located in the middle of the V-shaped plate of the surrounding plate (14), and the clean water entering through the water inlet pipe (7) flows into the V-shaped plate.

7. A dust purification device for an iron oxide pulverizing workshop according to claim 6, characterized in that: The installation area (5) and the circular mesh plate (6) are each provided in threes.

Images