Device for inhibiting dust raising during lime discharging
By designing a dust-repellent discharge device that includes ash discharge valve, a feed pipe, a dust suppression cover, annular negative pressure pipe and a negative pressure pipe, the dust problem during the discharge of white ash in the iron sintering workshop is solved, and the working environment of workers is significantly improved.
Patent Information
- Application Number
- CN202421988065.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-16
AI Technical Summary
During the discharge process of the material silo in the iron sintering workshop, a large amount of dust will be generated when the white ash is unloaded, resulting in a harsh working environment for workers and affecting the health of workers.
A device for suppressing dust discharge and dust suppression of white ash is designed, including a dust discharge valve, a discharge pipe, a dust suppression cover, annular negative pressure pipe and a negative pressure pipe. Through the cooperation of these components, dust generated during the unloading of white ash can be collected and controlled to prevent it from floating in the workshop.
It effectively reduces the dust drift during the unloading of white ash, improves the working environment of workers, and improves the health level of workers.
Smart Images
Figure CN222922552U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of iron-making sintering production equipment, and particularly relates to a device for suppressing dust during lime discharging. Background Art
[0002] During the production process of conveying materials in the batching room of an iron-making sintering workshop, lime, as the main flux, plays a role in strengthening sintering and adjusting the alkalinity of sinter ore, and is an indispensable raw material in the sintering process. Therefore, it needs to be continuously and uninterruptedly added.
[0003] However, a large amount of dust is generated during the discharging process from the silo, including a large amount of lime dust and dust-laden water vapor, resulting in a poor working environment for workers and affecting their physical health. Summary of the Utility Model
[0004] In order to solve the problem that a large amount of dust is generated when the existing technology silo discharges lime, the utility model provides a device for suppressing dust during lime discharging, which can timely collect the generated dust when the ash discharge valve discharges lime and prevent the dust from spreading in the workshop.
[0005] The technical solution adopted by the device for suppressing dust during lime discharging of the utility model is as follows:
[0006] A device for suppressing dust during lime discharging includes an ash discharge valve, and a discharge pipe located below the ash discharge valve and above the belt scale and connected to the ash discharge valve. An anti-dust hood is sleeved outside the discharge pipe. An annular negative pressure pipe sleeved on the discharge pipe is arranged inside the anti-dust hood. A plurality of downward negative pressure heads are evenly arranged circumferentially on the side wall of the annular negative pressure pipe. The annular negative pressure pipe is connected to a sub-negative pressure pipe arranged above the belt scale through a main negative pressure pipe. A plurality of negative pressure heads facing the edge of the anti-dust hood are fixedly connected to the sub-negative pressure pipe.
[0007] A further improvement of the technical solution of the utility model lies in that: a conical connecting pipe is arranged between the ash discharge valve and the discharge pipe.
[0008] A further improvement of the above technical solution of the utility model lies in that: a vacuum pump is arranged on the side wall of the ash discharge valve; wherein, one end of the main negative pressure pipe far from the annular negative pressure pipe is connected to the air inlet of the vacuum pump, and the air outlet of the vacuum pump is connected to a dust collection bag through an air outlet pipe.
[0009] A further improvement of the above technical solution of the utility model lies in that: the sub-negative pressure pipe is connected to the side wall of the ash discharge valve through an L-shaped connecting rod.
[0010] A further improvement of the technical solution of the utility model lies in that: the anti-dust hood includes an upper anti-dust hood sleeved outside the discharge pipe and connected to the connecting pipe. A cubic lower anti-dust hood is arranged below the upper anti-dust hood; wherein, the lower anti-dust hood is connected to the belt scale.
[0011] A further improvement of the above technical solution of the utility model lies in that the lower dust suppression cover includes first baffles extending to the left and right sides of the belt scale, and a second baffle located between the two first baffles and in contact with the belt scale; wherein, each first baffle is connected to the second baffles on both sides thereof through connecting cloth, and each first baffle and each second baffle are connected to the upper dust suppression cover through connecting pieces.
[0012] A further improvement of the above technical solution of the utility model lies in that the valve plate in the ash discharge valve is hinged to the ash discharge valve through a rotating shaft; wherein, one end of the rotating shaft extends outside the ash discharge valve and is connected with a pressing rod perpendicular to the rotating shaft through a resistance bearing, and a pressing switch cooperating with the pressing rod is arranged on the side wall of the ash discharge valve through a stop rod.
[0013] Due to the adoption of the above technical solution, the technical progress achieved by the utility model includes:
[0014] Through the provided communicating pipe, the white ash discharged from the ash discharge valve can smoothly pass through the discharge pipe and be discharged onto the belt scale; through the provided dust suppression cover, when the white ash is discharged from the discharge pipe to the belt scale, the generated dust can be controlled within the dust suppression cover to prevent the dust from spreading in the workshop; through the provided annular negative pressure pipe and negative pressure head, the dust in the dust suppression cover can be collected; when the belt scale drives the discharged white ash to be discharged from the dust suppression cover, the white ash will push the dust suppression cover upward, and at this time, a gap is generated between the dust suppression cover and the belt scale, and part of the dust in the dust suppression cover will float out of the dust suppression cover through the above gap. Through the provided sub-negative pressure pipe and negative pressure head, the dust floating out of the gap can be collected, thereby further preventing the dust from spreading in the workshop.
[0015] Meanwhile, through the provided connecting cloth in the utility model, when the belt scale drives the white ash to move, the white ash can push the second baffle in its moving direction upward, thereby facilitating the white ash to move out of the dust suppression cover.
[0016] Meanwhile, through the provided resistance bearing in the utility model, when the rotating shaft drives the valve plate to rotate, it will simultaneously drive the pressing rod to rotate towards the pressing switch. When the pressing rod contacts the pressing switch, the pressing switch is pressed and closed by the pressing rod, and at this time, the vacuum pump is started; at the same time, due to the existence of the resistance bearing, on the premise that the pressing rod continuously presses the pressing switch, the rotating shaft can drive the valve plate to continue to rotate, thereby adjusting the opening size of the valve plate and regulating the flow rate of the white ash discharged from the ash discharge valve, so that the utility model is applicable to different rotation angles of the valve plate.
[0017] Meanwhile, in the utility model, the opening and closing of the ash discharge valve and the opening and closing of the vacuum pump are linked together, so that the vacuum pump is automatically started when the ash discharge valve is opened, and the vacuum pump is automatically closed when the ash discharge valve is closed. Description of the Drawings
[0018] Figure 1 It is a schematic structural diagram of a device for suppressing dust during lime discharging of the present utility model;
[0019] Figure 2 It is a schematic structural diagram of another angle of a device for suppressing dust during lime discharging of the present utility model;
[0020] Figure 3 It is a schematic structural diagram of the connection between the annular negative pressure pipe and the sub - negative pressure pipe of a device for suppressing dust during lime discharging of the present utility model;
[0021] Figure 4 It is a schematic cross - sectional structural diagram of the dust suppression cover of a device for suppressing dust during lime discharging of the present utility model.
[0022] In the attached drawings: 1. Ash discharge valve; 11. Rotating shaft; 12. Resistance bearing; 13. Pressing rod; 14. Stop rod; 15. Pressing switch; 16. Limiting rod;
[0023] 2. Discharge pipe;
[0024] 3. Dust suppression cover; 31. Upper dust suppression cover; 32. Lower dust suppression cover; 321. First baffle; 322. Second baffle; 323. Connecting cloth; 324. Connecting piece;
[0025] 4. Dust suppression mechanism; 41. Annular negative pressure pipe; 42. Negative pressure head; 43. Main negative pressure pipe; 44. Sub - negative pressure pipe; 45. Vacuum pump; 46. Air outlet pipe; 47. Connecting rod;
[0026] 5. Belt scale;
[0027] 6. Connecting pipe. Specific embodiments
[0028] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the attached drawings. In the following description, the description of well - known structures and technologies is omitted to avoid unnecessarily confusing the concept of the present utility model.
[0029] First, refer to Figure 1 , the present utility model includes an ash discharge valve 1 located above the belt scale 5, and there is a discharge pipe 2 connected between the ash discharge valve 1 and the belt scale 5 through a conical connecting pipe 6. An outer sleeve of the discharge pipe 2 is provided with a dust suppression cover 3 connected to the connecting pipe 6, and a dust suppression mechanism 4 for preventing dust from rising is arranged inside the dust suppression cover 3.
[0030] When specifically setting the dust suppression mechanism 4 in the present utility model, reference can be made to Figure 1 and Figure 3 According to Figure 1 and Figure 3It can be seen that the dust suppression mechanism 4 includes an annular negative pressure pipe 41 sleeved on the outer wall of the discharge pipe 2, and a plurality of downward negative pressure heads 42 are fixedly connected to the bottom of the annular negative pressure pipe 41; continue to refer to Figure 3 , a vacuum pump 45 is fixedly arranged on the outer wall of the ash discharge valve 1, and the air inlet of the vacuum pump 45 is connected to the annular negative pressure pipe 41 through a main negative pressure pipe 43; continue to refer to Figure 3 , the dust suppression mechanism 4 further includes a sub-negative pressure pipe 44 connected to the main negative pressure pipe 43. One end of the sub-negative pressure pipe 44 away from the main negative pressure pipe 43 is parallel to the belt scale 5, and a plurality of negative pressure heads 42 are fixedly connected to one end of the sub-negative pressure pipe 44 away from the main negative pressure pipe 43 and are aligned with the position where the edge of the bottom end of the dust suppression cover 3 contacts the belt scale 5. At the same time, in order to facilitate the collection of dust, the air outlet of the vacuum pump 45 is connected to a dust collection bag through an air discharge pipe 46. The white ash dust collected by the dust suppression mechanism 4 in the present invention will eventually enter the dust collection bag for storage.
[0031] In the present invention, when the dust suppression cover 3 is specifically arranged, reference can be made to Figure 1 , Figure 2 and Figure 4 . According to Figure 1 , Figure 2 and Figure 4 It can be seen that the dust suppression cover 3 in the present invention includes a cylindrical upper dust suppression cover 31 sleeved on the outside of the discharge pipe 2, and the top end of the upper dust suppression cover 31 is fixedly connected to the outer wall of the connecting pipe 6; continue to refer to Figure 1 , Figure 2 and Figure 4 It can be seen that the dust suppression cover 3 further includes a cubic lower dust suppression cover 32 located below the upper dust suppression cover 31 and communicating with the upper dust suppression cover 31, and the bottom end of the lower dust suppression cover 32 is connected to the belt scale 5.
[0032] When the lower dust suppression cover 32 in the present invention is specifically arranged, reference can be continued to be made to Figure 1 , Figure 2 and Figure 4 . According to Figure 1 , Figure 2 and Figure 4 It can be seen that the lower dust suppression cover 32 includes first baffle plates 321 located on the left and right sides of the belt scale 5. The bottom ends of the first baffle plates 321 are both located below one side of the belt scale 5. The positions between the two first baffle plates 321 and on the front and rear sides of the upper dust suppression cover 31 are all connected by second baffle plates 322. Specifically, the top ends of the first baffle plates 321 and the second baffle plates 322 are connected to the outer wall of the upper dust suppression cover 31 through connecting pieces 324. The upper parts of each first baffle plate 321 are fixedly connected to the upper parts of the adjacent two second baffle plates 322, and the lower parts of the first baffle plate 321 and the adjacent two second baffle plates 322 can be connected together through a connecting cloth 323.
[0033] Meanwhile, the utility model further includes a control mechanism for controlling the vacuum pump 45. When specifically arranged, the control mechanism can refer to Figure 2 , according to Figure 2 , it can be known that the control mechanism includes a pressing rod 13 located on one side of the ash discharge valve 1. Specifically, a valve plate for closing the ash discharge valve 1 is hinged in the ash discharge valve 1 through a rotating shaft 11. One end of the rotating shaft 11 penetrates the side wall of the ash discharge valve 1 and extends outside the ash discharge valve 1. The pressing rod 13 is connected to the end of the rotating shaft 11 outside the ash discharge valve 1 through a resistance bearing 12; continue to refer to Figure 2 , a pressing switch 15 cooperating with the pressing rod 13 is connected to the outer wall of the ash discharge valve 1 through a stop rod 14. At the same time, when the ash discharge valve 1 is closed, in order to ensure that the pressing rod 13 returns to its original position, a limiting rod 16 for limiting the pressing rod 13 is arranged on the side wall of the ash discharge valve 1.
[0034] The working principle of the white ash discharge dust suppression device in this embodiment is as follows: when the rotating shaft 11 drives the valve plate to rotate, it will simultaneously drive the pressing rod 13 to rotate towards the pressing switch 15. When the pressing rod 13 contacts the pressing switch 15, the pressing switch 15 is pressed and closed by the pressing rod 13, and at this time the vacuum pump 45 starts; at the same time, due to the existence of the resistance bearing 12, on the premise that the pressing rod 13 continuously presses the pressing switch 15, the rotating shaft 11 can drive the valve plate to continue to rotate, so as to adjust the opening size of the valve plate and the flow rate of the white ash discharged from the ash discharge valve 1, making the utility model applicable to different rotation angles of the valve plate.
[0035] When the ash discharge valve 1 discharges white ash to the belt scale 5, the vacuum pump 45 starts. At this time, the dust in the dust suppression cover 3 will be collected through the annular negative pressure pipe 41 and the negative pressure head 42, and at the same time, the dust floating out from the gap will be collected through the sub-negative pressure pipe 44 and the negative pressure head 42.
[0036] When the ash discharge valve 1 is closed, the rotating shaft 11 drives the valve plate to rotate in the reverse direction. At this time, the rotating shaft 11 simultaneously drives the pressing rod 13 to rotate in the reverse direction. The pressing rod 13 no longer presses the pressing switch 15, and the pressing switch 15 disconnects, and the vacuum pump 45 stops working; when the pressing rod 13 touches the limiting rod 16, the pressing rod 13 returns to its original position. At this time, the rotating shaft 11 continues to drive the valve plate to rotate until the ash discharge valve 1 is completely closed.
[0037] In the above embodiments, the present utility model provides a device for suppressing dust during the discharge of lime. Through the provided connecting pipe, the lime discharged from the ash discharge valve can smoothly pass through the discharge pipe and be discharged onto the belt scale; through the provided dust suppression cover, when the lime is discharged from the discharge pipe onto the belt scale, the generated dust can be controlled within the dust suppression cover to prevent the dust from spreading in the workshop; through the provided annular negative pressure pipe and negative pressure head, the dust within the dust suppression cover can be collected; when the belt scale drives the discharged lime to discharge from the dust suppression cover, the lime will push the dust suppression cover upwards, and at this time, a gap will be generated between the dust suppression cover and the belt scale, and some of the dust within the dust suppression cover will float out of the dust suppression cover through the above-mentioned gap. Through the provided sub-negative pressure pipe and negative pressure head, the dust floating out through the gap can be collected, thereby further preventing the dust from spreading in the workshop.
[0038] The above-described embodiments are merely descriptions of the preferred embodiments of the present utility model, and do not limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, various variations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope of the present utility model. The technical content claimed by the present utility model has been fully recorded in the claims.
Claims
1. A device for suppressing dust emission during lime unloading, comprising a lime unloading valve (1), and a discharge pipe (2) located below the lime unloading valve (1) and above a belt weigher (5) and connected to the lime unloading valve (1), characterized in that: The outside of the discharge pipe (2) is provided with a dust suppression cover (3), and an annular negative pressure pipe (41) is provided inside the dust suppression cover (3) and is sleeved on the discharge pipe (2). A plurality of negative pressure heads (42) facing downward are evenly arranged on the side wall of the annular negative pressure pipe (41) in the circumferential direction, and the annular negative pressure pipe (41) is connected to a sub-negative pressure pipe (44) arranged above the belt scale (5) through a main negative pressure pipe (43), and a plurality of negative pressure heads (42) facing the edge of the dust suppression cover (3) are fixedly connected to the sub-negative pressure pipe (44).
2. The device for suppressing dust from lime discharging according to claim 1, characterized in that: A conical connecting pipe (6) is provided between the ash discharge valve (1) and the discharge pipe (2).
3. The device for suppressing dust during lime discharging according to claim 1, characterized in that: A vacuum pump (45) is arranged on the side wall of the dust discharge valve (1); wherein one end of the main negative pressure pipe (43) away from the annular negative pressure pipe (41) is connected to the air inlet of the vacuum pump (45), and the air outlet of the vacuum pump (45) is connected to the dust collecting bag through the air outlet pipe (46).
4. The device for suppressing dust from lime unloading according to claim 1, characterized in that: The negative pressure distribution pipe (44) is connected to the side wall of the ash discharge valve (1) via an L-shaped connecting rod (47).
5. The device for suppressing dust from lime unloading according to claim 2, characterized in that: The dust suppression hood (3) comprises an upper dust suppression hood (31) which is sleeved on the outside of the discharge pipe (2) and connected to the connecting pipe (6), and a lower dust suppression hood (32) in a cubic shape is arranged below the upper dust suppression hood (31); wherein the lower dust suppression hood (32) is connected to the belt scale (5).
6. The device for suppressing dust during lime unloading according to claim 5, characterized in that: The lower dust suppression cover (32) comprises a first baffle (321) extending to the left and right sides of the belt scale (5), and a second baffle (322) located between the two first baffles (321) and in contact with the belt scale (5); wherein each first baffle (321) is connected to the second baffles (322) located on both sides thereof via a connecting cloth (323), and each first baffle (321) and each second baffle (322) are connected to the upper dust suppression cover (31) via a connecting piece (324).
7. A device for suppressing dust from lime discharging according to any one of claims 1 to 6, characterized in that: The valve plate in the ash discharge valve (1) is hinged to the ash discharge valve (1) via a rotating shaft (11); one end of the rotating shaft (11) extends outside the ash discharge valve (1) and is connected to a pressing rod (13) perpendicular to the rotating shaft (11) via a resistance bearing (12); a pressing switch (15) cooperating with the pressing rod (13) is provided on the side wall of the ash discharge valve (1) via a stop rod (14).