Device for preventing dust generation during powder slurry preparation

Abstract

This utility model relates to the technical field of powder slurry preparation equipment, specifically a device for preventing dust generation during powder slurry preparation. It includes a powder storage silo, with its bottom outlet connected to a preparation tank via a feeding system. A stirring paddle is installed inside the preparation tank, and a liquid spray pipe is installed at the top. The bottom of the liquid spray pipe is connected to a distribution pipe that diverts liquid into the preparation tank, with nozzles installed on the distribution pipe. In this dust prevention device, the feeding system uses a spiral pusher to push the powder, reducing dust generated by impact during powder fall. The liquid spray pipe, combined with oscillating nozzles, sprays the powder in the preparation tank at multiple angles and evenly, wetting the powder as soon as it enters the tank, effectively suppressing dust generation, improving the working environment, and reducing powder loss. A flow meter on the liquid spray pipe monitors the liquid flow rate in real time, and a level gauge on the preparation tank monitors the slurry level.

Description

Technical Field

[0001] This utility model relates to the technical field of powder slurry preparation equipment, and more specifically, to a device for preventing dust generation during powder slurry preparation. Background Technology

[0002] Dust generation has always been a major challenge in the powder slurry preparation process. For example, during limestone slurry preparation, the limestone powder falling from a height during transport to the slurry tank easily generates dust, increasing limestone powder consumption and seriously affecting worker health and environmental hygiene. Traditionally, high-powered dust collection equipment (such as axial flow fans or bag filters) is installed to control dust; however, this method has many drawbacks. The investment in dust collection equipment is substantial, and the presence of humid steam in the slurry tank during preparation results in high-humidity dust flowing through the equipment, easily causing blockages and requiring frequent cleaning, severely impacting dust removal efficiency.

[0003] Prior art (application number: 202321428107) discloses a dust control device that, when limestone powder is conveyed from the feed inlet to the slurry tank, sequentially sprays the limestone powder with spray components at the feed inlet and inside the slurry tank to achieve dust suppression. However, in practical applications, the spray component configuration may not be flexible enough, making it difficult to adjust according to different powder characteristics and formulation requirements, resulting in room for improvement in dust suppression effectiveness. Furthermore, the device does not optimize the powder feeding process, failing to reduce dust generation at the source. Therefore, developing a powder slurry preparation device that effectively prevents dust, is simple in structure, low in cost, and easy to operate and maintain is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a device for preventing dust generation during powder slurry preparation, addressing the issue that the spray assembly proposed in the background art may lack flexibility in its design, making it difficult to adjust according to different powder characteristics and preparation requirements, thus hindering improvement in dust reduction. Furthermore, this device does not optimize the powder feeding process, failing to reduce dust generation at its source.

[0005] To achieve the above objectives, this utility model provides a device for preventing dust generation during powder preparation slurry, including a powder storage silo. The bottom discharge end of the powder storage silo is connected to a preparation tank via a feeding system. A stirring paddle is installed inside the preparation tank. A liquid spray pipe is provided at the top of the preparation tank. The bottom of the liquid spray pipe is connected to a diversion pipe that diverts liquid into the preparation tank. A nozzle is installed on the diversion pipe.

[0006] This setup includes a powder storage silo to store powder raw materials. The feeding system transports the powder from the storage silo to the mixing tank. Inside the mixing tank, a liquid spray pipe sprays liquid into the tank through a distributor pipe and nozzles, while a stirring paddle mixes the powder and liquid.

[0007] Preferably, the stirring paddle is driven to rotate by a stirring rod, the top of which passes through the preparation tank and is driven to rotate by a stirring motor.

[0008] This device uses a stirring motor as a power source, which drives the stirring rod to rotate, and the stirring rod in turn drives the stirring paddle to rotate in the preparation tank, thus stirring the powder and liquid in the tank.

[0009] Preferably, the top end of the stirring rod is rotatably connected to the preparation tank via a sealed bearing.

[0010] This feature includes a sealed bearing installed at the connection between the top of the stirring rod and the preparation tank. This design ensures that the stirring rod can rotate freely while forming a sealed structure to prevent liquid from leaking from the connection between the stirring rod and the preparation tank.

[0011] Preferably, a flow meter is installed on the liquid spray pipe.

[0012] This setting involves installing a flow meter on the liquid spray pipe to monitor the flow rate of the liquid through the spray pipe in real time and to feed the flow data back to the operator or control system.

[0013] Preferably, a level gauge is installed on the preparation tank.

[0014] This setting involves installing a level gauge on the preparation tank to monitor the liquid level of the slurry in the tank in real time and feeding the level data back to the operator or control system.

[0015] Preferably, the feeding system includes a feeding channel, a rotating shaft is installed inside the feeding channel, a spiral pusher is installed on the rotating shaft, one end of the rotating shaft is driven to rotate by a drive motor, and a baffle is installed on the drive end of the drive motor.

[0016] This setting drives the motor to rotate the shaft, and the spiral pusher blade on the shaft rotates accordingly. Using the spiral propulsion principle, the powder in the feeding channel is pushed from the inlet to the outlet and transported to the preparation tank. The baffle at the drive end of the motor can prevent the powder from overflowing from the drive end during the conveying process.

[0017] Preferably, the top of one end of the feeding channel is connected to the discharge end of the powder storage silo via a feed inlet, and the bottom of the other end of the feeding channel is connected to the feed end of the preparation tank via a discharge outlet.

[0018] This setting connects the feeding channel to the bottom discharge end of the powder storage silo via the inlet, forming a conveying path for the powder from the storage silo to the feeding channel; and connects the discharge end to the inlet of the preparation tank, conveying the powder in the feeding channel to the preparation tank, thus realizing the directional conveying of the powder.

[0019] Preferably, the bottom end of the diverter pipe is connected to the nozzle via an elastic connecting sleeve, and a swing rod is rotatably connected to the outer side of the bottom end of the diverter pipe via a bearing. The lower end of the swing rod is connected to the nozzle, and the upper end of the swing rod is driven by a swing motor. The swing of the swing rod causes the angle of the nozzle to change, thereby achieving uniform spraying of the liquid in the preparation tank.

[0020] This feature uses a swing motor to drive a swing arm, which in turn causes the nozzle to change angle. Simultaneously, the nozzle is connected to a distribution pipe via an elastic connecting sleeve, ensuring that the liquid can be delivered normally during the swing process. By changing the nozzle angle, the liquid in different areas of the preparation tank can be sprayed evenly.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In this device for preventing dust in powder preparation slurry, the feeding system uses a spiral pusher to push the powder, reducing dust generated by impact during the powder's fall; the liquid spray pipe, in conjunction with an oscillating nozzle, sprays the powder in the preparation tank at multiple angles and evenly, wetting the powder as soon as it enters the preparation tank, effectively suppressing dust generation, improving the working environment, and reducing powder loss.

[0023] The flow meter on the liquid spray pipe can monitor the liquid flow rate in real time, and the level gauge on the preparation tank can control the slurry level. The combination of the two allows operators to accurately control the liquid-powder ratio according to actual needs, ensuring the stable quality of slurry preparation.

[0024] The stirring paddle is driven by a stirring motor and rotates in conjunction with a sealed bearing to ensure a stable and efficient stirring process, allowing the powder and liquid to mix thoroughly, improving the uniformity of the slurry, and enhancing the slurry preparation effect.

[0025] The nozzles change angle via a swing arm, allowing for flexible adjustment of the spray range and angle according to powder characteristics and formulation requirements. Compared to traditional fixed spraying methods, this method is more adaptable and provides better dust suppression. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the feeding system in this utility model;

[0028] Figure 3 This is a schematic diagram of the nozzle structure in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Powder storage silo; 2. Feeding system; 21. Feeding channel; 211. Inlet; 212. Outlet; 22. Rotating shaft; 23. Spiral pusher; 24. Drive motor; 241. Baffle; 3. Preparation tank; 4. Agitator; 5. Sealed bearing; 6. Nozzle; 61. Swing rod; 62. Flexible connecting sleeve; 7. Flow meter; 8. Level gauge; 9. Liquid spray pipe; 91. Diverter pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a device for preventing dust generation during powder slurry preparation, such as... Figure 1 As shown, it includes a powder storage bin 1. The bottom discharge end of the powder storage bin 1 is connected to the preparation tank 3 through a feeding system 2. A stirring paddle 4 is installed in the preparation tank 3. A liquid spray pipe 9 is provided at the top of the preparation tank 3. The bottom of the liquid spray pipe 9 is diverted into the preparation tank 3 through a diversion pipe 91. A nozzle 6 is installed on the diversion pipe 91.

[0033] Powder storage silo 1 stores powder raw materials. Feeding system 2 transports the powder from powder storage silo 1 to preparation tank 3. In preparation tank 3, liquid spray pipe 9 sprays liquid into the tank through diversion pipe 91 and nozzle 6. At the same time, stirring paddle 4 stirs and mixes the powder and liquid. This realizes an integrated process from powder storage to transportation and then to mixing with liquid. The liquid spray pipe 9 and nozzle 6 work together to wet the powder when it enters preparation tank 3, suppressing dust generation. The stirring paddle 4 ensures that the powder and liquid are fully mixed, guaranteeing the quality of slurry preparation.

[0034] In this embodiment, as Figure 1 As shown, the stirring paddle 4 is driven to rotate by the stirring rod, the top of the stirring rod passes through the preparation tank 3 and is driven to rotate by the stirring motor.

[0035] The stirring motor serves as the power source, rotating to drive the stirring rod, which in turn drives the stirring paddle 4 to rotate within the preparation tank 3, thus agitating the powder and liquid within the tank. Automated stirring, achieved through motor drive, is more efficient and stable than manual stirring, ensuring thorough and uniform mixing of the powder and liquid within the preparation tank 3, thereby improving the uniformity and quality of the slurry.

[0036] Specifically, such as Figure 1 As shown, the top of the stirring rod is rotatably connected to the preparation tank 3 via a sealed bearing 5.

[0037] A sealed bearing 5 is installed at the connection between the top of the stirring rod and the preparation tank 3. While ensuring the stirring rod can rotate freely, it forms a sealing structure to prevent liquid in the preparation tank 3 from leaking out from the connection. This ensures the sealing of the preparation tank 3, avoiding waste and environmental pollution caused by liquid leakage. It also prevents external impurities from entering the preparation tank 3, ensuring the purity of the slurry preparation, extending the service life of the stirring rod and the preparation tank 3, and reducing maintenance costs.

[0038] Furthermore, such as Figure 1 As shown, a flow meter 7 is installed on the liquid spray pipe 9.

[0039] A flow meter 7 is installed on the liquid spray pipe 9 to monitor the flow rate of the liquid through the spray pipe in real time and feed the flow data back to the operator or control system. Based on the data displayed by the flow meter 7, the operator can precisely control the amount of liquid sprayed, thereby accurately adjusting the liquid-to-powder ratio to ensure the slurry concentration meets requirements, achieving precise preparation and improving the stability of slurry quality.

[0040] Furthermore, such as Figure 1 As shown, a level gauge 8 is installed on the preparation tank 3.

[0041] The level gauge 8 is installed on the preparation tank 3 to monitor the liquid level of the slurry in the preparation tank 3 in real time and feed the liquid level data back to the operator or control system. This helps the operator to keep track of the slurry level in the preparation tank 3, avoid slurry overflow or insufficiency, facilitate the rational arrangement of feeding and discharging, ensure the continuity and stability of the preparation process, and also provide a reference for accurately controlling the liquid-to-powder ratio.

[0042] Furthermore, such as Figure 2 As shown, the feeding system 2 includes a feeding channel 21, a rotating shaft 22 is installed inside the feeding channel 21, a spiral pusher 23 is installed on the rotating shaft 22, one end of the rotating shaft 22 is driven to rotate by a drive motor 24, and a baffle 241 is installed on the drive end of the drive motor 24.

[0043] The drive motor 24 drives the rotating shaft 22 to rotate, and the spiral pusher blade 23 on the rotating shaft 22 rotates accordingly. Utilizing the spiral propulsion principle, the powder in the feeding channel 21 is pushed from the inlet 211 to the outlet 212 and conveyed to the preparation tank 3. The baffle 241 at the drive end of the drive motor 24 prevents the powder from overflowing from the drive end during conveying. The spiral pusher method ensures stable powder conveying and reduces dust generated by powder falling and impact. The baffle 241 further ensures the sealing of the powder conveying, prevents powder leakage, improves the safety and efficiency of the conveying process, and also reduces powder loss.

[0044] Furthermore, such as Figure 2 As shown, the top of one end of the feeding channel 21 is connected to the discharge end of the powder storage silo 1 through the inlet 211, and the bottom of the other end of the feeding channel 21 is connected to the inlet of the preparation tank 3 through the discharge outlet 212.

[0045] The feeding channel 21 is connected to the bottom discharge end of the powder storage silo 1 via the inlet 211, forming a conveying path for the powder from the storage silo to the feeding channel 21. It is connected to the inlet end of the preparation tank 3 via the discharge outlet 212, conveying the powder in the feeding channel 21 to the preparation tank 3, thus achieving directional powder conveying. This clearly defines the powder conveying route, ensuring that the powder can be smoothly and accurately conveyed from the storage silo to the preparation tank 3, making the entire powder conveying process orderly, providing a foundation for subsequent powder-liquid mixing, and ensuring the continuity of the slurry preparation process.

[0046] Furthermore, such as Figure 3 As shown, the bottom end of the diversion pipe 91 is connected to the nozzle 6 through the elastic connecting sleeve 62. The outer side of the bottom end of the diversion pipe 91 is rotatably connected to the swing rod 61 through the bearing. The lower end of the swing rod 61 is connected to the nozzle 6, and the upper end of the swing rod 61 is driven by the swing motor. The swing of the swing rod 61 drives the angle of the nozzle 6 to change, so as to achieve uniform spraying of liquid in the preparation tank 3.

[0047] A swing motor drives a swing rod 61 to swing, which in turn causes the nozzle 6 to change its angle. Simultaneously, the nozzle 6 is connected to a distribution pipe 91 via an elastic connecting sleeve 62, ensuring normal liquid delivery during the swinging process. By changing the angle of the nozzle 6, uniform spraying of liquid is achieved in different areas of the preparation tank 3. Compared to a fixed-angle nozzle 6, the spray range and angle can be flexibly adjusted. Based on the distribution of powder in the preparation tank 3, more uniform liquid spraying is achieved, ensuring that all powders are in full contact with the liquid, effectively suppressing dust generation, and improving the uniformity and quality of slurry mixing.

[0048] When using the powder preparation slurry dust prevention device of this utility model, first add some liquid, such as process water or phosphoric acid, to the preparation tank 3, the amount of which should be enough to submerge the blades of the stirring paddle 4. Start the stirring motor to drive the stirring paddle 4 to rotate, forming a liquid vortex in the tank, creating a premixed environment for subsequent powder addition and preventing powder from accumulating on the liquid surface.

[0049] The drive motor 24 rotates the shaft 22 and the spiral pusher 23 of the feeding system 2, pushing the powder in the powder storage silo 1 through the inlet 211 of the feeding channel 21 to the outlet 212 of the preparation tank 3, conveying the powder into the tank at a stable flow rate. The spiral pusher method reduces the impact dust generated by the free fall of the powder. Simultaneously with the powder entering the preparation tank 3, the liquid spray pipe 9 sprays the remaining liquid into the tank through the diverter pipe 91 and the nozzle 6. The swing motor drives the swing rod 61 to swing the nozzle 6, achieving angle changes through the elastic connecting sleeve 62, covering the entire area of ​​the preparation tank 3, ensuring that the liquid is evenly sprayed onto the powder drop point and the mixing area, quickly wetting the powder particles and suppressing dust. The flow meter 7 monitors the liquid flow rate in real time, and the operator adjusts the spray volume according to the powder feeding speed to precisely control the liquid-to-powder ratio.

[0050] The stirring paddle 4 rotates continuously, ensuring thorough mixing of powder and liquid to form a slurry. The sealed bearing 5 ensures a tight seal during stirring, preventing liquid leakage and the entry of external impurities. The level gauge 8 monitors the slurry level in the preparation tank 3 in real time, preventing overflow or insufficient feeding, and assists in controlling the feeding and liquid inflow rhythm to ensure a continuous and stable preparation process.

[0051] After feeding and liquid introduction are completed, stirring continues for a period of time according to the requirements of slurry uniformity. Once the powder and liquid are completely mixed, stirring is stopped, and the slurry is discharged through the outlet of preparation tank 3, completing the preparation process. The combination of liquid spraying and screw feeding suppresses dust throughout the entire process from powder conveying to mixing, eliminating the need for additional fans or dust removal equipment and reducing energy consumption.

[0052] Finally, it should be noted that the electronic components in the drive motor 24 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for preventing dust generation during powder slurry preparation, comprising a powder storage silo (1), characterized in that: The bottom discharge end of the powder storage silo (1) is connected to the preparation tank (3) through the feeding system (2). The preparation tank (3) is equipped with a stirring paddle (4). The top of the preparation tank (3) is provided with a liquid spray pipe (9). The bottom of the liquid spray pipe (9) is diverted into the preparation tank (3) through a diversion pipe (91). The diversion pipe (91) is equipped with a nozzle (6).

2. The device for preventing dust generation during powder slurry preparation according to claim 1, characterized in that: The stirring paddle (4) is driven to rotate by the stirring rod, the top of the stirring rod passes through the preparation tank (3) and is driven to rotate by the stirring motor.

3. The device for preventing dust generation during powder slurry preparation according to claim 2, characterized in that: The top of the stirring rod is rotatably connected to the preparation tank (3) via a sealed bearing (5).

4. The device for preventing dust generation during powder slurry preparation according to claim 1, characterized in that: A flow meter (7) is installed on the liquid spray pipe (9).

5. The device for preventing dust generation during powder slurry preparation according to claim 1, characterized in that: A level gauge (8) is installed on the preparation tank (3).

6. The device for preventing dust generation during powder slurry preparation according to claim 1, characterized in that: The feeding system (2) includes a feeding channel (21), a rotating shaft (22) is installed inside the feeding channel (21), a spiral pusher (23) is installed on the rotating shaft (22), one end of the rotating shaft (22) is driven to rotate by a drive motor (24), and a baffle (241) is installed on the drive end of the drive motor (24).

7. The apparatus for preventing dust generation during powder slurry preparation according to claim 6, characterized in that: The top of one end of the feeding channel (21) is connected to the discharge end of the powder storage silo (1) through the inlet (211), and the bottom of the other end of the feeding channel (21) is connected to the inlet of the preparation tank (3) through the discharge port (212).

8. The apparatus for preventing dust generation during powder slurry preparation according to claim 1, characterized in that: The bottom end of the diversion pipe (91) is connected to the nozzle (6) through an elastic connecting sleeve (62). The bottom outer side of the diversion pipe (91) is rotatably connected to a swing rod (61) through a bearing. The lower end of the swing rod (61) is connected to the nozzle (6). The upper end of the swing rod (61) is driven by a swing motor. The swing of the swing rod (61) drives the angle of the nozzle (6) to change, thereby achieving uniform spraying of liquid in the preparation tank (3).

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