Powder pretreatment device

Abstract

The utility model discloses a powder pretreatment device, which comprises a treatment tank and a support frame connected to the lower part of the treatment tank, the treatment tank is provided with a feed port through which powder can enter the treatment tank, and the upper part of the treatment tank is provided with a spray head which can spray a treating agent into the treatment tank to be combined with the powder. A stirring device used for stirring powder and a discharging port used for discharging the powder are arranged on the lower portion of an inner cavity of the treatment tank, an air suction opening is further formed in the upper portion of the treatment tank, an air suction device used for sucking out air in the treatment tank to form negative pressure is arranged at the air suction opening, and a filter screen used for limiting the powder from being sucked out is further arranged at the air suction opening. An anti-blocking device capable of enabling powder on the filter screen to fall off is further arranged between the air draft device and the air draft opening, part of air in the treatment tank is pumped out through the air draft device so as to form micro negative pressure of an inner cavity of the treatment tank, therefore, feeding of the powder is smoother, accumulation of the powder at the feeding opening is reduced, the filter screen is further arranged at the air draft opening, and therefore the powder can be discharged more smoothly. The powder is filtered through the filter screen, so that extraction of the powder is limited, meanwhile, the anti-blocking device is further arranged between the air draft device and the air draft opening, the powder on the filter screen can fall off through the anti-blocking device, and therefore the filter screen is not prone to being blocked by the powder.

Description

Technical Field

[0001] The utility model relates to the field of chemical raw material processing equipment, in particular to a powder preprocessing device. Background Art

[0002] In the processing or production of chemical raw materials, in order to meet the specific requirements of the raw materials or improve their applicability, it is often necessary to pretreat the chemical raw materials. The pretreatment of chemical raw materials is generally divided into: 1. Removing impurities, foreign matter or unnecessary components in the raw materials to ensure product quality and production efficiency; 2. Drying wet or moist raw materials to reduce moisture content, prevent the growth of bacteria and mold, and improve the efficiency of subsequent processing and product quality; 3. Breaking large pieces of raw materials into appropriate particle sizes or particle sizes for subsequent processing steps; 4. Mixing different raw materials according to a specific formula to meet the requirements of the final product; 5. Chemically or physically treating the raw materials to change their properties or structure to meet specific production needs; 6. Safely handling toxic, corrosive or other dangerous raw materials to ensure that the production process is safe and controllable. The way and method of pretreatment depends on the nature of the raw materials and the requirements of the final product.

[0003] For example, in the processing of chemical raw material white carbon black powder, it is often necessary to spray a treatment agent on the surface of the white carbon black powder for pretreatment, so as to improve the compatibility and dispersibility of white carbon black with the matrix material, and improve the performance of the final product. Common treatment agents in production include hexamethyldisilazane, vinylsilazane, dimethyldimethoxysilane, dimethyldiethoxysilane, etc. The pretreatment of white carbon black is generally to transfer the white carbon black powder into the treatment tank and spray the treatment agent on the white carbon black in the treatment tank. During the treatment process, the powder sometimes accumulates at the feed port, thereby affecting its feeding efficiency.

[0004] The utility model is made based on the above situation. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a powder pretreatment device which can increase the feeding efficiency and reduce the occurrence of material port blockage.

[0006] The utility model is realized by the following technical solutions:

[0007] A powder pretreatment device comprises a treatment tank and a support frame connected to the lower part of the treatment tank, the treatment tank is provided with a feeding port for allowing powder to enter the treatment tank, the upper part of the treatment tank is provided with a nozzle for spraying a treatment agent into the treatment tank to combine with the powder, the lower part of the inner cavity of the treatment tank is provided with a stirring device for stirring the powder and a discharge port for discharging the powder, the upper part of the treatment tank is also provided with an exhaust port, the exhaust port is provided with an exhaust device for extracting air in the treatment tank to form a negative pressure, the exhaust port is also provided with a filter screen to limit the extraction of powder, and an anti-blocking device is provided between the exhaust device and the exhaust port to make the powder on the filter screen fall off.

[0008] In the powder pretreatment device as described above, the anti-blocking device includes a pulse dust collector or a vibrator.

[0009] A powder pretreatment device as described above, wherein the stirring device includes a rotating shaft rotatably connected to the lower part of the processing tank, the upper part of the rotating shaft extends into the inner cavity of the processing tank, the lower part of the rotating shaft extends from the processing tank, the upper end of the rotating shaft is connected to a stirring paddle that can rotate with it, and the stirring device also includes a motor for driving the rotating shaft to rotate.

[0010] In the powder pretreatment device as described above, a motor mounting frame is connected to one side of the support frame, and the motor is connected to the motor mounting frame.

[0011] In the powder pretreatment device as described above, a first pulley is provided on the output shaft of the motor, a second pulley is connected to the lower part of the rotating shaft, and a transmission belt is provided between the first pulley and the second pulley so that the second pulley can rotate following the first pulley.

[0012] In the powder pretreatment device as described above, the treatment tank is also provided with an opening and closing door structure for opening and closing the discharge port.

[0013] In the powder pretreatment device as described above, the opening and closing door structure includes a mechanical manual opening and closing door, an electric opening and closing door, or a pneumatic opening and closing door.

[0014] In the powder pretreatment device as described above, the treatment tank is further provided with an entry hole for a person to enter the treatment tank, and the entry hole is provided with a cover for blocking the entry hole.

[0015] In the powder pretreatment device as described above, the outer side wall of the treatment tank is provided with a lifting lug for facilitating lifting of the treatment tank.

[0016] In the powder pretreatment device as described above, the discharge port is connected to a diaphragm pump for pumping out the powder.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The device is provided with an exhaust device at the exhaust port, through which part of the air in the processing tank is extracted to form a slight negative pressure in the inner cavity of the processing tank, so that the feeding of the powder is smoother and the accumulation of the powder at the feeding port is reduced. A filter is also provided at the exhaust port, through which the powder is filtered to limit the extraction of the powder. At the same time, an anti-blocking device is provided between the exhaust device and the exhaust port, through which the powder on the filter can fall, so that the filter is not easily blocked by the powder.

[0019] 2. The anti-blocking device can be a pulse dust collector, which removes the powder attached to the filter screen by blowing compressed air. The anti-blocking device can also be a vibrator, which generates vibration to shake off the powder on the filter screen, so that the filter screen is not easily blocked by the powder, thereby increasing the service life of the exhaust device.

[0020] 3. The motor drives the stirring paddle through the transmission belt. The belt drive has a simple structure and relatively low manufacturing cost, which is suitable for mass production. The belt drive runs smoothly, with low noise and low vibration. In the case of overload, slippage will occur between the belt and the pulley, thereby protecting other components from damage.

[0021] 4. The processing tank is also provided with an entry hole for people to enter the processing tank, and the entry hole is provided with a cover for sealing the entry hole. After opening the cover, it is convenient for personnel to carry out maintenance.

[0022] 5. The outer wall of the treatment tank is provided with a lifting lug for convenient lifting of the treatment tank, which facilitates the lifting and installation of the treatment tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a cross-sectional view of the utility model;

[0025] Figure 2 It is a side view of the utility model;

[0026] Figure 3 It is a top view of the utility model. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] like Figures 1 to 3A powder pretreatment device shown in the figure includes a treatment tank 1 and a support frame 2 connected to the lower part of the treatment tank 1. The treatment tank 1 is provided with a feeding port 11 for allowing powder to enter the treatment tank 1, and the feeding can be carried out by connecting to the outlet of the ton bag feeding device. The upper part of the treatment tank 1 is provided with a nozzle 12 that can spray a treatment agent into the treatment tank 1 to combine with the powder. The lower part of the inner cavity of the treatment tank 1 is provided with a stirring device 3 for stirring the powder and a discharge port 13 for discharging the powder. The upper part of the treatment tank 1 is also provided with an exhaust port 14, and an exhaust device 4 for extracting air from the treatment tank 1 to form a negative pressure is provided at the exhaust port 14. A filter screen 5 for limiting the extraction of powder is also provided at the exhaust port 14. An anti-blocking device 6 that can cause the powder on the filter screen 5 to fall is also provided between the exhaust device 4 and the exhaust port 14. The above-mentioned powder can be white carbon black powder or other chemical raw material powder. When the pre-treated powder is white carbon black, the above-mentioned treatment agent includes but is not limited to hexamethyldisilazane, vinylsilazane, dimethyldimethoxysilane, dimethyldiethoxysilane, etc. The filter screen 5 can be connected to the treatment tank 1 by a threaded fastener.

[0029] An exhaust device 4 is provided at the exhaust port 14 of the powder pretreatment device, and part of the air in the treatment tank 1 can be extracted through the exhaust device 4 to form a slight negative pressure in the inner cavity of the treatment tank 1, so that the feeding of the powder is smoother and the accumulation of powder at the feeding port is reduced. A filter screen 5 is also provided at the exhaust port 4, and the powder is filtered by the filter screen 5 to limit the extraction of the powder. At the same time, an anti-blocking device 6 is also provided between the exhaust device 4 and the exhaust port 14, and the powder on the filter screen 5 can fall off through the anti-blocking device 6, so that the filter screen 5 is not easily blocked by the powder.

[0030] In one embodiment, the exhaust device 4 may be an exhaust fan, the treatment tank may be mounted on the support frame 2 by means of threaded fasteners or other connection structures, and the spray head 12 may be an electric rotating spray head, which can spray the treatment agent evenly on the powder. At the same time, the stirring device 3 may make the powder dispersed more evenly and fully contact with the treatment agent.

[0031] In one embodiment, the anti-blocking device 6 includes a pulse dust collector or a vibrator. When the anti-blocking device 6 is a pulse dust collector, the powder attached to the filter screen 5 is removed by blowing compressed air. The anti-blocking device 6 can also be a vibrator. The powder on the filter screen 5 is shaken off by vibration, so that the filter screen 5 is not easily blocked by the powder, thereby improving the service life of the exhaust device 4. The structure and principle of the pulse dust collector are similar or the same as the structure and principle of the pulse dust collector disclosed in patents such as CN111068423B, CN111282360A, CN105903283B, and CN101670214A. The structure and principle of the vibrator are similar or the same as the structure and principle of the vibrator disclosed in patents such as CN104467528A, CN103357566A, CN100998977B, CN103157591A, and CN105101021A.

[0032] When the anti-blocking device 6 is a pulse dust collector, the pulse dust collector is connected to the processing tank 1 through a threaded fastener, the exhaust device 4 is connected to the pulse dust collector through a threaded fastener, and the air inlet of the exhaust device 4 is connected to the inner cavity of the pulse dust collector through an air duct. The connection between the pulse dust collector and the processing tank 1 can be sealed with a sealing ring to prevent air leakage or powder flying out.

[0033] In one embodiment, the stirring device 3 includes a rotating shaft 31 rotatably connected to the lower part of the processing tank 1, the upper part of the rotating shaft 31 extends into the inner cavity of the processing tank 1, the lower part of the rotating shaft 31 extends from the processing tank 1, and the upper end of the rotating shaft 31 is connected to a stirring paddle 32 that can rotate with it, and the stirring device 3 also includes a motor 33 for driving the rotating shaft 31 to rotate. A mounting seat for the rotating shaft 31 is provided at the lower part of the processing tank 1, and a bearing and a sealing ring are provided between the rotating shaft 31 and the mounting seat. A motor mounting frame 21 is connected to one side of the support frame 2, and the motor 33 is connected to the motor mounting frame 21. The motor mounting frame 21 is connected to the support frame 2 by threaded fasteners or other connection methods such as welding.

[0034] In one embodiment, the output shaft of the motor 33 is provided with a first pulley 301, the lower part of the rotating shaft 31 is connected with a second pulley 302, and a transmission belt is provided between the first pulley 301 and the second pulley 302 so that the second pulley 302 can rotate along with the first pulley 301. The motor 33 drives the stirring paddle 32 to rotate through the transmission belt. The belt drive has a simple structure and relatively low manufacturing cost, and is suitable for mass production. The belt drive runs smoothly, with low noise and vibration. In the case of overload, the belt and the pulley will slip, thereby protecting other components from damage. Among them, the motor 33 can be a stepping motor, which can adjust the speed according to different stages.

[0035] In one embodiment, the processing tank 1 is further provided with an opening and closing door structure 7 for opening and closing the discharge port 13. The opening and closing door structure 7 includes a mechanical manual opening and closing door, an electric opening and closing door, or a pneumatic opening and closing door. When the opening and closing door structure 7 is a mechanical manual opening and closing door, it can be locked by a lock or other means. When the opening and closing door structure 7 is a pneumatic opening and closing door, it can be driven by a cylinder.

[0036] In one embodiment, the processing tank 1 is also provided with an entry hole 15 for people to enter the processing tank 1. The main function of the entry hole 15 is to provide a convenient passage for the staff, so that they can easily enter the interior of the processing tank 1 to perform various operations or inspections. In order to ensure the sealing and safety of the processing tank 1, a cover 151 is connected to the entry hole 15. The main function of the cover 151 is to block the entry hole 15 to prevent external dust, impurities or other adverse factors from entering the interior of the processing tank 1, thereby ensuring the cleanliness of the interior of the processing tank 1 and the normal operation of the work.

[0037] The cover 151 can be connected by threaded fasteners. This connection method is not only simple to operate, but also tightly connected, and can effectively prevent the cover 151 from loosening or falling off. In addition, other connection structures, such as snap-on connection or latch connection, can also be selected to adapt to different usage scenarios and needs. When the processing tank 1 needs to be inspected and repaired, the staff only needs to simply open the cover 151 to easily enter the interior of the processing tank 1. This design not only facilitates the maintenance work, but also improves work efficiency. At the same time, due to the presence of the cover 151, even during the maintenance process, it can effectively prevent the leakage of substances inside the processing tank 1, ensuring the safety and hygiene of the working environment.

[0038] In one embodiment, a lifting lug 8 is provided on the outer wall of the treatment tank 1 to facilitate lifting the treatment tank 1, and the lifting lug 8 facilitates the lifting and installation of the treatment tank 1. The lifting lug 8 can be connected to the treatment tank 1 by welding or threaded fasteners.

[0039] In one embodiment, a diaphragm pump 9 for pumping out the powder is connected to the discharge port 13. The powder can be transported to the reaction kettle through the diaphragm pump 9.

Claims

1. A powder pretreatment device, characterized in that: The invention comprises a processing tank (1) and a support frame (2) connected to the lower part of the processing tank (1); the processing tank (1) is provided with a feed port (11) for allowing powder to enter the processing tank (1); the upper part of the processing tank (1) is provided with a nozzle (12) for spraying a processing agent into the processing tank (1) to combine with the powder; the lower part of the inner cavity of the processing tank (1) is provided with a stirring device (3) for stirring the powder and a discharge port (13) for discharging the powder; the upper part of the processing tank (1) is also provided with an exhaust port (14); the exhaust port (14) is provided with an exhaust device (4) for extracting air in the processing tank (1) to form a negative pressure; the exhaust port (14) is also provided with a filter screen (5) for limiting the extraction of powder; and an anti-blocking device (6) for causing the powder on the filter screen (5) to fall is also provided between the exhaust device (4) and the exhaust port (14).

2. A powder pretreatment device according to claim 1, characterized in that: The anti-blocking device (6) comprises a pulse dust collector or a vibrator.

3. A powder pretreatment device according to claim 2, characterized in that: The stirring device (3) comprises a rotating shaft (31) rotatably connected to the lower part of the processing tank (1), the upper part of the rotating shaft (31) extends into the inner cavity of the processing tank (1), the lower part of the rotating shaft (31) extends out from the processing tank (1), the upper end of the rotating shaft (31) is connected to a stirring paddle (32) capable of rotating with the rotating shaft, and the stirring device (3) also comprises a motor (33) for driving the rotating shaft (31) to rotate.

4. A powder pretreatment device according to claim 3, characterized in that: One side of the support frame (2) is connected to a motor mounting frame (21), and the motor (33) is connected to the motor mounting frame (21).

5. A powder pretreatment device according to claim 4, characterized in that: A first pulley (301) is provided on the output shaft of the motor (33); a second pulley (302) is connected to the lower part of the rotating shaft (31); and a transmission belt is provided between the first pulley (301) and the second pulley (302) so that the second pulley (302) can rotate along with the first pulley (301).

6. A powder pretreatment device according to claim 1, characterized in that: The processing tank (1) is also provided with an opening and closing door structure (7) for opening and closing the discharge port (13).

7. A powder pretreatment device according to claim 6, characterized in that: The opening and closing door structure (7) comprises a mechanical manual opening and closing door, an electric opening and closing door, or a pneumatic opening and closing door.

8. A powder pretreatment device according to claim 1, characterized in that: The processing tank (1) is also provided with an entry hole (15) for a person to enter the processing tank (1), and the entry hole (15) is provided with a sealing cover (151) for sealing the entry hole (15).

9. A powder pretreatment device according to claim 1, characterized in that: The outer side wall of the processing tank (1) is provided with a lifting lug (8) for facilitating lifting of the processing tank (1).

10. A powder pretreatment device according to claim 1, characterized in that: The discharge port (13) is connected to a diaphragm pump (9) for pumping out powder.

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