A mixing device for zinc powder purification processing

Abstract

The utility model discloses a kind of mixed devices for zinc powder purification processing, it is related to zinc powder purification technical field, including jar body, discharge pipe, feeding hopper, support frame and motor, the discharge pipe is fixedly connected in the right side of jar body bottom, the feeding hopper is fixedly connected in the left side of jar body top, the support frame is fixedly connected in the bottom of jar body, the motor is fixedly connected at the center of jar body bottom, further including linkage knock mechanism, the linkage knock mechanism is set in the left side of jar body, and for knocking the cylinder wall of jar body.The utility model passes through motor drive stirring assembly operation, simultaneously with the help of transmission connecting mechanism, power is transmitted to linkage knock mechanism and feeding structure, realize stirring, anti-clogging and cylinder wall knock cooperative work in zinc powder purification process, the background technology proposed in the conventional equipment feeding port frequent blockage, in mixing process, material is easily attached in mixed cylinder inner wall, forms material accumulation layer, hinders the problem of full mixing between material.

Description

Technical Field

[0001] This utility model relates to the field of zinc powder purification technology, specifically to a mixing device for zinc powder purification and processing. Background Technology

[0002] Zinc powder purification refers to the process of removing impurities (such as metal oxides, other metallic elements, and non-metallic impurities) from zinc powder using physical, chemical, or physicochemical methods to improve its purity and physical and chemical properties. Zinc powder, as an important industrial raw material, is widely used in coatings, metallurgy, chemicals (such as reducing agents), batteries, and pharmaceuticals. Its purity directly affects product quality and performance; therefore, purification is a crucial step in zinc powder production and application. The purification process requires mixing equipment, whose core function is to uniformly disperse zinc powder with the purification medium (such as acids, alkalis, solvents, and gases), enhancing mass transfer, heat transfer, or chemical reaction efficiency, and ensuring that impurities fully contact the purification medium and are removed.

[0003] Zinc powder (especially fine powder with a particle size ≤ μm) has a high specific surface area and is prone to poor flowability due to environmental humidity and surface oxidation, frequently causing blockages at the feed inlet of traditional equipment. For example:

[0004] If the zinc powder supply is interrupted during acid washing and purification, it will lead to an excess of acid solution. When the zinc powder is added later, local over-dissolution will occur, affecting the zinc powder recovery rate.

[0005] During the reduction process, interruption of zinc powder feeding can cause the concentration of reducing agent (such as hydrogen) in the mixing drum to be too high, posing a safety hazard. Some equipment uses independent vibration motors to prevent blockage, but this can easily lead to zinc powder splashing.

[0006] During the mixing process, materials tend to adhere to the inner wall of the mixing drum, forming a material accumulation layer that hinders thorough mixing between materials. Utility Model Content

[0007] The purpose of this invention is to provide a mixing device for zinc powder purification and processing, so as to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A mixing device for zinc powder purification and processing includes a tank, a discharge pipe, a feeding hopper, a support frame, and a motor. The discharge pipe is fixedly connected to the right side of the bottom of the tank, the feeding hopper is fixedly connected to the left side of the top of the tank, the support frame is fixedly connected to the bottom of the tank, and the motor is fixedly connected to the center of the bottom of the tank. It also includes a linkage striking mechanism, which is located on the left side of the tank and is used to strike the cylinder wall of the tank.

[0010] A transmission connection mechanism is provided at the top of the tank and is used to transmit power to the knocking mechanism and the stirring assembly.

[0011] A stirring assembly is disposed at the center inside the tank and is used to stir zinc powder.

[0012] A further improvement of this utility model's technical solution is that: the linkage striking mechanism includes a vibration connecting shaft, a connecting shaft fixing seat, a limiting bracket, a cam, a spring, a striking arm, and a striking hammer. The connecting shaft fixing seat is fixedly installed on the top left side of the tank body, and the limiting bracket is fixedly installed on the bottom left side of the tank body. The bottom end of the vibration connecting shaft passes through the connecting shaft fixing seat and the limiting bracket sequentially from top to bottom, and is rotatably installed with the connecting shaft fixing seat and the limiting bracket. The cam is fixedly installed at the bottom of the vibration connecting shaft and located above the limiting bracket. The striking arm is rotatably installed on the rear side of the limiting bracket away from the tank body via a shaft pin. The striking hammer is fixedly installed on the side of the striking arm away from the vibration connecting shaft. The spring is fixedly installed on the side of the limiting bracket close to the tank body. The end of the spring close to the striking arm is in transmission cooperation with the end of the striking arm close to the vibration connecting shaft. The cam is in transmission cooperation with the striking arm.

[0013] Using the above technical solution, the power of the transmission connection mechanism can be connected through the vibration connecting shaft. At the same time, the rotation of the vibration connecting shaft drives the cam fixed to it to rotate, which in turn causes the cam to rotate the striking arm that it cooperates with to rotate around the left side of the shaft pin. This causes the spring to be compressed and stored. When the cam continues to rotate and separates from the striking arm, the spring force is released, which can drive the end of the striking arm near the vibration connecting shaft to strike to the right. This causes the striking arm to drive the striking hammer to strike the tank, thereby achieving the striking vibration effect.

[0014] A further improvement of this utility model's technical solution lies in the following: the transmission connection mechanism includes a transmission meshing assembly, a feeding transmission shaft, a double-shaft limiting component, a transmission shaft, a first pulley, a first belt, a second pulley, a third pulley, and a second belt. The double-shaft limiting component is fixedly installed on the right side of the top of the feeding hopper. The feeding transmission shaft is rotatably connected to the left side of the double-shaft limiting component. The transmission shaft is rotatably connected to the right side of the double-shaft limiting component. The bottom end of the transmission shaft is rotatably connected to the right side of the top of the tank. The first pulley is fixedly installed on the top of the transmission shaft. The second pulley is fixedly connected to the top of the feeding transmission shaft. The third pulley is fixedly connected to the top of the first pulley and located below the second pulley. The third pulley is fixedly connected to the top of the vibration connecting shaft. A second belt is fitted on the surface of the first pulley, and the first pulley is connected to the third pulley via the first belt. The second belt is fitted on the surface of the second pulley, and the second pulley is connected to the transmission via the second belt.

[0015] Using the above technical solution, the dual-axis limiting component can limit the rotation of the drive shaft and the feeding drive shaft, making their rotation stable. At the same time, the drive shaft can be driven to rotate through the transmission meshing assembly, which in turn drives pulley one to rotate. Then, pulley one, in conjunction with belt one, causes pulley three to rotate, which in turn causes the feeding drive shaft fixed to it to rotate. Since pulley three is coaxially fixed with pulley two, it can drive pulley two to rotate as well. Then, pulley two, in conjunction with belt two, causes it to rotate, which drives the vibration connecting shaft to rotate, thereby realizing the power transmission of the impact. Meanwhile, the rotation of the feeding drive shaft can provide the power for the rotation of the screw feed rod.

[0016] A further improvement of the present invention is that the stirring assembly includes a stirring shaft, a scraping stirring blade, a dispersing stirring blade, and a turbulent stirring blade. The stirring shaft is fixedly installed on the output end of the motor, the scraping stirring blade is fixedly installed on both sides of the surface of the stirring shaft, the dispersing stirring blade is fixedly installed on the bottom of the surface of the stirring shaft, and the turbulent stirring blade is fixedly installed on the top of the surface of the stirring shaft.

[0017] Using the above technical solution, the starting motor can drive the stirring shaft to rotate through the output end, thereby causing the scraping stirring blade, dispersing stirring blade, and turbulence stirring blade fixed on the surface of the stirring shaft to rotate, thus realizing the stirring function.

[0018] A further improvement of the present invention is that the transmission meshing assembly includes a driving gear and a driven gear. The driving gear is fixedly installed on the top of the stirring shaft and located above the top of the tank. The driven gear is fixedly installed on the bottom of the pulley and located above the top of the tank. The driven gear meshes with the driving gear to achieve power transmission.

[0019] In this technical solution, the rotation of the stirring shaft can drive the fixed driving gear to rotate, while the driven gear meshes with the driving gear, thereby causing the driven gear to rotate, which in turn drives the transmission shaft to rotate, thus completing the power transmission.

[0020] A further improvement of this utility model is that the tank body is composed of upper and lower parts and can be detached and installed via a flange.

[0021] Using the above technical solution, the tank body is disassembled and installed via flanges, which facilitates the maintenance and replacement of the turbulence stirring blades, scraping stirring blades, and dispersing stirring blades inside the tank, as well as the cleaning of the tank interior.

[0022] A further improvement of this utility model is that a spiral feeding rod is fixedly installed at the bottom of the feeding drive shaft, and the spiral feeding rod is made of aluminum alloy.

[0023] In the above technical solution, the rotation of the feeding drive shaft drives the fixed spiral feeding rod to rotate. The spiral feeding rod has a spiral structure, which allows the material to be pushed gradually along the spiral direction, thereby achieving stable and uniform feeding. In addition, the aluminum alloy spiral feeding rod can reduce its own weight, making the service life of the dual-axis limiting component longer and preventing the dual-axis limiting component from being bent and deformed by the spiral feeding rod.

[0024] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0025] 1. This utility model provides a mixing device for zinc powder purification and processing. The stirring component is driven by a motor, and the power is transmitted to the linkage striking mechanism and the feeding structure through a transmission connection mechanism. This realizes the coordinated work of stirring, anti-clogging and cylinder wall striking in the zinc powder purification process, which solves the problems mentioned in the background technology that the feeding port of traditional equipment is frequently blocked, and that the material easily adheres to the inner wall of the mixing cylinder during the mixing process, forming a material accumulation layer and hindering the full mixing of materials.

[0026] 2. This utility model provides a mixing device for zinc powder purification and processing. Through the coordinated action of the stirring component and the linkage striking mechanism: the scraping stirring plate directly removes the zinc powder adhering to the tank wall, the dispersing stirring plate and the turbulence stirring plate break up the agglomerates, and the high-frequency striking of the striking hammer causes the tank to vibrate slightly, further promoting the uniform contact between the zinc powder and the purification medium.

[0027] 3. This utility model provides a mixing device for zinc powder purification and processing. It utilizes the power of the stirring shaft to drive the spiral feeding rod, achieving stable feeding of zinc powder without the need for an additional power source. This effectively solves the problem of clogging at the feeding port caused by zinc powder agglomeration and poor flowability in traditional equipment. Compared with independent vibration motor anti-clogging, it can reduce zinc powder splashing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the northeastern isometric three-dimensional structure of this utility model;

[0030] Figure 3 This is a partial half-section three-dimensional structural diagram of the present invention.

[0031] In the diagram: 1. Tank; 2. Discharge pipe; 3. Feed hopper; 31. Dual-shaft limiting component; 4. Support frame; 5. Motor; 6. Stirring shaft; 61. Scraping stirring blade; 62. Dispersing stirring blade; 63. Turbulent stirring blade; 7. Drive gear; 71. Driven gear; 72. Transmission shaft; 8. Belt pulley one; 81. Belt one; 82. Belt pulley two; 83. Belt pulley three; 84. Belt two; 85. Belt pulley four; 9. Vibration connecting shaft; 91. Connecting shaft fixing seat; 92. Limiting bracket; 93. Cam; 94. Spring; 95. Striking arm; 96. Striking hammer; 10. Feeding transmission shaft; 101. Spiral feed rod. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to embodiments:

[0033] Example 1: Acid washing and purification of battery-grade zinc powder

[0034] Raw material preparation: Select crude zinc powder with a particle size of 10-20μm, a purity of about 98%, and containing metallic impurities such as iron and lead, as well as zinc oxide; prepare 15% dilute sulfuric acid as the acid washing and purification medium.

[0035] Equipment operation:

[0036] When the motor 5 is turned on, the stirring shaft 6 drives the scraping stirring blade 61, the dispersing stirring blade 62, and the turbulence stirring blade 63 to start stirring at a speed of 200 rpm. The drive gear 7 rotates synchronously, and through the driven gear 71, the transmission shaft 72 rotates, which in turn drives the feeding transmission shaft 10 and the screw feeding rod 101 to operate, so as to stably transport zinc powder from the feeding hopper 3 to the tank 1.

[0037] Dilute sulfuric acid is injected into tank 1 through a pipeline and fully mixed with zinc powder under stirring. The power of the stirring shaft 6 is transmitted to the vibration connecting shaft 9 through the transmission connection mechanism. The cam 93 pushes the striking arm 95 at a frequency of 30 times / minute, so that the striking hammer 96 periodically strikes the outer wall of tank 1.

[0038] Results: After 30 minutes of pickling, the removal rate of iron and lead impurities in the zinc powder met the purity requirements of battery-grade zinc powder. The feeding process was smooth, without any blockage, and the equipment operated stably.

[0039] Example 2: Reduction and purification of zinc powder for coatings

[0040] Raw material preparation: coarse zinc powder with a particle size of 5-10μm and a purity of 97%, with zinc oxide as the main impurity; hydrogen is used as a reducing agent, and the hydrogen flow rate is set to 5L / min.

[0041] Equipment operation:

[0042] Motor 5 starts, the stirring component speed is adjusted to 150rpm, the transmission connection mechanism drives the feeding and striking structure to operate, the spiral feeding rod 101 feeds material at a uniform speed, and the striking hammer 96 strikes the tank 125 times per minute.

[0043] Hydrogen gas is introduced from the bottom of tank 1 and comes into full contact with zinc powder under the combined action of stirring and tapping vibration. During the stirring process, the scraping stirring plate 61 cleans the zinc powder adhering to the tank wall in time, and the dispersing stirring plate 62 and the turbulence stirring plate 63 break up the zinc powder agglomerates.

[0044] Results: After a continuous reduction reaction of 60 minutes, the zinc oxide in the zinc powder was basically reduced, meeting the purity standard for zinc powder used in coatings. The hydrogen concentration was stable throughout the process, with no safety hazards. The equipment operated efficiently and had low maintenance costs.

[0045] Example 3: Purification of pharmaceutical intermediates by zinc powder solvent extraction

[0046] Raw material preparation: Zinc powder containing organic impurities, with a particle size of 20-30μm and a purity of 98.5%; a specific organic solvent such as toluene is selected as the extractant, and the mass ratio of solvent to zinc powder is 3:1.

[0047] Equipment operation:

[0048] Start motor 5, control the speed of stirring shaft 6 at 180 rpm, feed transmission shaft 10 drives screw feeder 101 to feed zinc powder into tank 1, and at the same time organic solvent is injected through pipeline; transmission connection mechanism drives vibration connection shaft 9, so that hammer 96 strikes the outer wall of tank 1 at a frequency of 28 times / minute.

[0049] The stirring component works in conjunction with the tapping vibration to ensure that the organic solvent and zinc powder are fully mixed. The zinc powder adhering to the tank wall continues to participate in the mixing and extraction under the scraping of the stirring plate 61 and the tapping action.

[0050] Results: After 40 minutes of extraction, the zinc powder purity met the requirements for zinc powder used in pharmaceutical intermediates. The feeding was stable and no blockage occurred. The equipment showed good adaptability to different processes and materials.

[0051] The working principle of this mixing device for zinc powder purification and processing will be explained in detail below.

[0052] like Figure 1-3 As shown, after the motor 5 starts, its output end drives the stirring shaft 6 to rotate, causing the scraping stirring plate 61, the dispersing stirring plate 62 and the turbulence stirring plate 63 fixed on the surface of the stirring shaft to rotate synchronously. Among them, the scraping stirring plate 61 rotates against the inner wall of the tank, which can scrape off the attached zinc powder; the dispersing stirring plate 62 forms a strong vortex at the bottom to break up the zinc powder agglomerates; the turbulence stirring plate 63 disturbs the material at the top, so that the zinc powder is fully mixed with the purification medium such as acid and reducing agent, ensuring that the impurities are in uniform contact with the medium and react.

[0053] When the stirring shaft 6 rotates, the driving gear 7 at its top drives the meshing driven gear 71 to rotate, which in turn drives the transmission shaft 72 to rotate. The transmission shaft 72 drives the pulley 83 to rotate through the pulley 8 and belt 81, so that the feeding transmission shaft 10 rotates synchronously, and finally drives the spiral feeding rod 101 in the feeding hopper 3 to rotate. The spiral feeding rod 101 pushes the zinc powder continuously and evenly into the tank 1 through the spiral propulsion action, avoiding the blockage of the feeding port caused by zinc powder agglomeration or poor flowability. When the feeding hopper 3 is not feeding, dust prevention measures are taken. The specific dust prevention measures are common knowledge to those skilled in the art, such as using a dust cover or dust cloth on the top of the feeding hopper 3.

[0054] When the feeding drive shaft 10 rotates, the pulley 82 at its top drives the 85 to rotate via the belt 84, causing the vibrating connecting shaft 9 to rotate accordingly. The cam 93 at the bottom of the vibrating connecting shaft 9 rotates synchronously. When the protruding end of the cam 93 contacts the striking arm 95, it pushes the striking arm 95 to twist around the shaft pin and compresses the spring 94 to store force. When the protruding end of the cam 93 disengages from the striking arm 95, the spring 94 releases its elasticity, causing the striking arm 95 to quickly return to its original position, causing the striking hammer 96 to strike the outer wall of the tank 1. Through the continuous rotation of the cam 93, the striking hammer 96 achieves high-frequency periodic striking of the tank 1, which, together with the stirring assembly, enhances the mixing effect of zinc powder.

[0055] After purification, the zinc powder is discharged through the discharge pipe 2 at the bottom of the tank 1. The discharge pipe 2 has a built-in valve (not shown in the figure). The specific model is common knowledge to those skilled in the art. For example, a gate valve, butterfly valve or shut-off valve can be used. The specific selection is based on the diameter of the discharge pipe 2. If cleaning or maintenance is required, the upper and lower parts of the tank 1 can be disassembled through the flange to facilitate cleaning of the internal stirring blades and tank walls, ensuring long-term stable operation of the equipment.

[0056] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A mixing device for zinc powder purification and processing, comprising a tank (1), a discharge pipe (2), a feeding hopper (3), a support frame (4), and a motor (5), wherein the discharge pipe (2) is fixedly connected to the right side of the bottom of the tank (1), the feeding hopper (3) is fixedly connected to the left side of the top of the tank (1), the support frame (4) is fixedly connected to the bottom of the tank (1), and the motor (5) is fixedly connected to the center of the bottom of the tank (1), characterized in that: It also includes a linkage striking mechanism, which is located on the left side of the tank (1) and is used to strike the cylinder wall of the tank (1); A transmission connection mechanism is provided on the top of the tank (1) and is used to transmit power to the linkage mechanism and the stirring assembly. A stirring assembly is disposed at the center inside the tank (1) and is used to stir zinc powder.

2. The mixing device for zinc powder purification and processing according to claim 1, characterized in that: The linkage striking mechanism includes a vibration connecting shaft (9), a connecting shaft fixing seat (91), a limiting bracket (92), a cam (93), a spring (94), a striking arm (95), and a striking hammer (96). The connecting shaft fixing seat (91) is fixedly installed on the top left side of the tank body (1), and the limiting bracket (92) is fixedly installed on the bottom left side of the tank body (1). The bottom end of the vibration connecting shaft (9) passes through the connecting shaft fixing seat (91) and the limiting bracket (92) from top to bottom, and is rotatably installed with the connecting shaft fixing seat (91) and the limiting bracket (92). The cam (93) is fixedly installed at the bottom of the vibration connecting shaft (9) and located above the limiting bracket (92). The striking arm (95) is rotatably installed on the rear side of the limiting bracket (92) away from the tank body (1) via a shaft pin. The striking hammer (96) is fixedly installed on the side of the striking arm (95) away from the vibration connecting shaft (9). The spring (94)... The spring (94) is fixedly installed on the side of the limiting bracket (92) near the tank (1). The end of the spring (94) near the striking arm (95) is engaged with the end of the striking arm (95) near the vibration connecting shaft (9). The cam (93) is engaged with the striking arm (95).

3. The mixing device for zinc powder purification and processing according to claim 2, characterized in that: The transmission connection mechanism includes a transmission engagement assembly, a feeding drive shaft (10), a double-axis limiting member (31), a drive shaft (72), a first pulley (8), a first belt (81), a second pulley (82), a third pulley (83), a second belt (84), and (85). The double-axis limiting member (31) is fixedly installed on the right side of the top of the feeding hopper (3). The feeding drive shaft (10) is rotatably connected to the left side of the double-axis limiting member (31), and the drive shaft (72) is rotatably connected to the right side of the double-axis limiting member (31). The bottom end of the drive shaft (72) is connected to the tank body. (1) The top right side is rotatably connected. The first pulley (8) is fixedly installed on the top of the transmission shaft (72). The second pulley (82) is fixedly connected to the top of the feeding transmission shaft (10). The third pulley (83) is fixedly connected to the top of the first pulley (8) and located below the second pulley (82). The (85) is fixedly connected to the top of the vibration connection shaft (9). The first belt (81) is sleeved on the surface of the first pulley (8), and the first pulley (8) is connected to the third pulley (83) through the first belt (81). The second belt (84) is sleeved on the surface of the second pulley (82), and the second pulley (82) is connected to the (85) through the second belt (84).

4. The mixing device for zinc powder purification and processing according to claim 3, characterized in that: The stirring assembly includes a stirring shaft (6), a scraping stirring blade (61), a dispersing stirring blade (62), and a turbulence stirring blade (63). The stirring shaft (6) is fixedly installed on the output end of the motor (5). The scraping stirring blade (61) is fixedly installed on both sides of the surface of the stirring shaft (6). The dispersing stirring blade (62) is fixedly installed on the bottom of the surface of the stirring shaft (6). The turbulence stirring blade (63) is fixedly installed on the top of the surface of the stirring shaft (6).

5. The mixing device for zinc powder purification and processing according to claim 4, characterized in that: The transmission meshing assembly includes a drive gear (7) and a driven gear (71). The drive gear (7) is fixedly installed on the top of the stirring shaft (6) and above the top of the tank (1). The driven gear (71) is fixedly installed on the bottom of the pulley (8) and above the top of the tank (1). The driven gear (71) meshes with the drive gear (7) to achieve power transmission.

6. The mixing device for zinc powder purification and processing according to claim 1, characterized in that: The tank (1) consists of two parts, upper and lower, and can be detached and installed via flanges.

7. The mixing apparatus for zinc powder purification and processing according to claim 3, characterized in that: The bottom of the feeding drive shaft (10) is fixedly installed with a spiral feeding rod (101), which is made of aluminum alloy.

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