Jet mill for silver powder production

Abstract

The utility model relates to the field of jet mills, in particular to a jet mill for silver powder production, which comprises a gas tank, valves I are connected to the outer walls of two ends of the gas tank, connecting pipes are arranged at the other ends of the valves I, and two connecting ports are arranged on the outer wall of the top of the gas tank. A suction assembly and a charging barrel are arranged at the positions, located at the connecting ports, of the gas tank, the other end of one connecting pipe is connected with a draught fan, and the input end of the draught fan is connected with a filtering structure; the filtering structure comprises a collecting box, a sliding groove formed in the center of the inner wall of one side of the collecting box, a spring groove formed in the position, located at one end of the sliding groove, of the collecting box, and supporting springs installed on the outer wall of the inner side of the spring groove at equal intervals. The vibrator generates vibration and drives the barrel-shaped filter screen to vibrate at the sliding groove through the supporting spring, impurities attached to the surface of the barrel-shaped filter screen are shaken off in the collecting box to be collected through vibration, use is convenient, active cleaning is convenient, the load of the draught fan is reduced, and the impurities are convenient to collect.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverizer technology, and in particular to an airflow pulverizer for silver powder production. Background Technology

[0002] An air jet mill uses Laval nozzles to create a supersonic airflow that is injected into the grinding chamber, fluidizing the material. The accelerated material converges at the intersection of several nozzles, resulting in intense collisions, friction, and shearing to form ultrafine particles. The pulverized material rises to the turbine classification zone under the action of the airflow. Under the rotation of the classification turbine, the particles are subjected to both centrifugal force and centripetal force generated by the viscosity of the airflow. When the centrifugal force is greater than the centripetal force, that is, coarse particles above the classification diameter spiral down along the cylinder wall and fall into the grinding zone for further pulverization, while particles of the appropriate size are carried by the airflow through the turbine into the collector.

[0003] However, currently, when the airflow used to feed materials into the crushing chamber is filtered, the filter screen becomes clogged, which can easily lead to a large load on the blower. As a result, the airflow blown out by the blower cannot introduce the material into the crushing chamber, affecting its use. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems and deficiencies by proposing an airflow pulverizer for silver powder production: the vibrator generates vibration, which drives the cylindrical filter screen to vibrate at the sliding groove through the support spring. The vibration shakes the impurities attached to the surface of the cylindrical filter screen into the collection box for collection, which is convenient to use, easy to actively clean, reduces the fan load, and facilitates the collection of impurities.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An airflow pulverizer for silver powder production includes a gas tank. Valves are connected to the outer walls of both ends of the gas tank, and connecting pipes are provided at the other ends of the valves. Two connection ports are provided on the top outer wall of the gas tank, and a suction assembly and a material cylinder are respectively located at the connection ports. A fan is connected to the other end of one of the connecting pipes, and a filter structure is connected to the input end of the fan. The filter structure includes a collection box, a sliding groove located at the center of one inner wall of the collection box, a spring groove located at one end of the sliding groove, support springs evenly spaced on the inner outer wall of the spring groove, and a mounting ring installed on the outer wall of the other end of the support springs. The suction assembly includes an extraction pipe connected to one end of the connection port, a vacuum pump installed at one end of the extraction pipe, and a pressure gauge installed in the gas tank.

[0007] Preferably, one end of the connecting pipe is connected to a crushing chamber, and the top outer wall of the crushing chamber is connected to a guide pipe, the other end of the guide pipe is connected to a turbine separation zone, and the bottom inner wall of the crushing chamber is provided with Laval nozzles distributed at equal intervals.

[0008] Preferably, a valve is installed on the bottom outer wall of the material cylinder, and a baffle is installed on the top outer wall of the material cylinder.

[0009] Preferably, a cylindrical filter screen is installed on the outer wall of one end of the mounting ring, and a blocking disc is welded to the outer wall of the cylindrical filter screen, with the outer wall of the blocking disc slidably connected to the inner wall of the collection box.

[0010] Preferably, the collection box has an air inlet at the center of the spring groove, and the input end of the fan is connected to the air inlet.

[0011] Preferably, a vibrator is embedded in the inner wall of the mounting ring, and the mounting ring is slidably connected to the inner wall of the spring groove.

[0012] Preferably, an intercepting net is installed on the top outer wall of the collection box.

[0013] Preferably, the vibrator and the fan are connected to a switch via wires, and the switch is connected to a power source via wires.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. After the vacuum pump is started, air is drawn into the gas tank through the suction pipe, and the inside of the gas tank is in a negative pressure state. At this time, valve two of the material cylinder is opened, and the negative pressure draws the material from the material cylinder into the gas tank, which is convenient for adding material.

[0016] 2. The blower draws in outside gas through the collection box and delivers it to the gas tank, which then blows the powder in the gas tank into the crushing chamber, making it easier to draw in the material and to feed it.

[0017] 3. The vibrator generates vibration, which drives the cylindrical filter screen to vibrate at the sliding groove through the support spring. The vibration shakes the impurities attached to the surface of the cylindrical filter screen into the collection box for collection. This makes it easy to use, easy to actively clean, reduces the load on the fan, and facilitates the collection of impurities. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an airflow pulverizer for silver powder production proposed in this utility model;

[0019] Figure 2 This is a partially unfolded structural diagram of an airflow pulverizer for silver powder production proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the air tank structure of an airflow pulverizer for silver powder production proposed in this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the collection box structure of an airflow pulverizer for silver powder production proposed in this utility model.

[0022] In the diagram: 1. Gas tank, 2. Valve I, 3. Connecting pipe, 4. Connecting port, 5. Material cylinder, 6. Valve II, 7. Baffle, 8. Suction assembly, 9. Fan, 10. Filter structure, 11. Grinding chamber, 12. Guide pipe, 13. Laval nozzle, 14. Pressure gauge, 15. Suction pipe, 16. Vacuum pump, 17. Collection box, 18. Sliding groove, 19. Spring groove, 20. Support spring, 21. Mounting ring, 22. Vibrator, 23. Cylindrical filter screen, 24. Baffle plate, 25. Interception net. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example:

[0025] Reference Figure 1-4 A silver powder production airflow pulverizer includes a gas tank 1. Valves 2 are connected to the outer walls of both ends of the gas tank 1, and connecting pipes 3 are provided at the other ends of the valves 2. Two connection ports 4 are provided on the top outer wall of the gas tank 1, and a suction component 8 and a material cylinder 5 are respectively provided at the connection ports 4. A fan 9 is connected to the other end of a connecting pipe 3, and a filter structure 10 is connected to the input end of the fan 9. The fan 9 draws in external gas through a collection box 17 and delivers it to the gas tank 1, blowing the powder in the gas tank 1 into the pulverizing chamber 11, which facilitates the suction of materials and the feeding of materials.

[0026] The filter structure 10 includes a collection box 17, a sliding groove 18 opened at the center of the inner wall of one side of the collection box 17, a spring groove 19 opened at one end of the sliding groove 18 in the collection box 17, a support spring 20 installed at equal intervals on the inner outer wall of the spring groove 19, and a mounting ring 21 installed on the outer wall of the other end of the support spring 20.

[0027] The suction assembly 8 includes a suction pipe 15 connected to one end of the connection port 4, a vacuum pump 16 installed at one end of the suction pipe 15, and a pressure gauge 14 installed in the gas tank 1. After the vacuum pump 16 is started, it evacuates the gas tank 1 through the suction pipe 15, and the gas tank 1 is in a negative pressure state. At this time, the valve 6 of the material cylinder 5 is opened, and the negative pressure draws the material from the material cylinder 5 into the gas tank 1, which facilitates the suction of material and the feeding of material.

[0028] One end of the connecting pipe 3 is connected to the crushing chamber 11, and the top outer wall of the crushing chamber 11 is connected to the guide pipe 12. The other end of the guide pipe 12 is connected to the turbine separation zone, and the bottom inner wall of the crushing chamber 11 is provided with Laval nozzles 13 distributed at equal intervals. The airflow drives the material to rotate in the crushing chamber 11. At this time, the high-pressure gas generator sprays high-pressure gas into the crushing chamber 11 through the Laval nozzles 13. The powder undergoes violent collision, friction and shearing to form ultra-fine particles, which facilitates crushing.

[0029] A valve 6 is installed on the bottom outer wall of the material cylinder 5, and a baffle 7 is installed on the top outer wall of the material cylinder 5.

[0030] A cylindrical filter screen 23 is installed on the outer wall of one end of the mounting ring 21, and a baffle plate 24 is welded to the outer wall of the cylindrical filter screen 23. The outer wall of the baffle plate 24 is slidably connected to the inner wall of the collection box 17. During vibration, the baffle plate 24 on the outer wall of the cylindrical filter screen 23 slides on the inner wall of the collection box 17 to prevent gas from being drawn in from the sliding groove 18.

[0031] The collection box 17 has an air inlet at the center of the spring groove 19, and the input end of the fan 9 is connected to the air inlet.

[0032] A vibrator 22 is embedded in the inner wall of the mounting ring 21, and the mounting ring 21 is slidably connected to the inner wall of the spring groove 19. The vibrator 22 is activated in the mounting ring 21, and the vibration is amplified at the support spring 20, causing the cylindrical filter screen 23 and the blocking disc 24 to shake at the sliding groove 18, shaking off the attached substances on the cylindrical filter screen 23, which is convenient for actively removing impurities and is easy to use.

[0033] An interception net 25 is installed on the top outer wall of the collection box 17. The fan 9 filters and intercepts the output gas through the interception net 25 and the cylindrical filter 23 on the top of the collection box 17, thus reducing the impurity content of the output gas in two ways.

[0034] The vibrator 22 and the fan 9 are connected to a switch via wires, and the switch is connected to a power source via wires. The vibrator 22 generates vibration, which drives the cylindrical filter screen 23 to vibrate at the sliding groove 18 through the support spring 20. The vibration shakes the impurities attached to the surface of the cylindrical filter screen 23 into the collection box 17 for collection. This makes it easy to use and easy to actively clean, reduces the load on the fan 9, and facilitates the collection of impurities.

[0035] Working principle: During use, the material to be crushed is placed inside the material cylinder 5. After closing the baffle 7, both ends of the gas tank 1 are closed through valve 2. Then, the vacuum pump 16 is started, and air is drawn into the gas tank 1 through the suction pipe 15, creating a negative pressure inside the gas tank 1. At this time, valve 6 of the material cylinder 5 is opened, and the negative pressure draws the material from the material cylinder 5 into the gas tank 1. Then, valve 6 is closed, the blower 9 is started, and valve 2 is opened. The blower 9 draws in outside gas through the collection box 17 and delivers it to the gas tank 1, blowing the powder from the gas tank 1 into the crushing chamber 11. This facilitates material intake and feeding. The airflow causes the material to rotate within the crushing chamber 11. The high-pressure gas generator injects high-pressure gas into the pulverizing chamber 11 through the Laval nozzle 13. The powder undergoes intense collision, friction, and shearing to form ultra-fine particles, which facilitates pulverization. After a period of use, some impurities adhere to the outer wall of the cylindrical filter screen 23 in the collection box 17, reducing the efficiency of the cylindrical filter screen 23. At this time, the vibrator 22 in the mounting ring 21 is activated. The vibrator 22 generates vibration, which drives the cylindrical filter screen 23 to vibrate at the sliding groove 18 through the support spring 20. The vibration shakes the impurities attached to the surface of the cylindrical filter screen 23 into the collection box 17 for collection, which is convenient for use and active cleaning, reduces the load on the blower 9, and facilitates the collection of impurities.

[0036] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An airflow pulverizer for silver powder production, comprising an air tank (1), characterized in that, The outer walls of both ends of the gas tank (1) are connected to valves (2), and the other end of each valve (2) is provided with a connecting pipe (3). The top outer wall of the gas tank (1) is provided with two connecting ports (4), and the gas tank (1) is provided with a suction assembly (8) and a material cylinder (5) at the connecting ports (4). The other end of one of the connecting pipes (3) is connected to a fan (9), and the input end of the fan (9) is connected to a filter structure (10). The filter structure (10) includes a collection box (17), a sliding groove (18) opened at the center of the inner wall of one side of the collection box (17), a spring groove (19) opened at one end of the collection box (17) located in the sliding groove (18), a support spring (20) installed at equal intervals on the inner outer wall of the spring groove (19), and a mounting ring (21) installed on the outer wall of the other end of the support spring (20). The suction assembly (8) includes a suction pipe (15) connected to one end of the connection port (4), a vacuum pump (16) installed at one end of the suction pipe (15), and a pressure gauge (14) installed in the gas tank (1).

2. The airflow pulverizer for silver powder production according to claim 1, characterized in that, One end of the connecting pipe (3) is connected to the crushing chamber (11), and the top outer wall of the crushing chamber (11) is connected to the guide pipe (12). The other end of the guide pipe (12) is connected to the turbine separation zone, and the bottom inner wall of the crushing chamber (11) is provided with Laval nozzles (13) distributed at equal intervals.

3. The airflow pulverizer for silver powder production according to claim 1, characterized in that, A valve (6) is installed on the bottom outer wall of the material cylinder (5), and a baffle (7) is installed on the top outer wall of the material cylinder (5).

4. The airflow pulverizer for silver powder production according to claim 1, characterized in that, A cylindrical filter screen (23) is installed on the outer wall of one end of the mounting ring (21), and a blocking disc (24) is welded to the outer wall of the cylindrical filter screen (23). The outer wall of the blocking disc (24) is slidably connected to the inner wall of the collection box (17).

5. The airflow pulverizer for silver powder production according to claim 1, characterized in that, The collection box (17) has an air inlet at the center of the spring groove (19), and the input end of the fan (9) is connected to the air inlet.

6. The airflow pulverizer for silver powder production according to claim 5, characterized in that, The vibrator (22) is embedded in the inner wall of the mounting ring (21), and the mounting ring (21) is slidably connected to the inner wall of the spring groove (19).

7. The airflow pulverizer for silver powder production according to claim 5, characterized in that, An intercepting net (25) is installed on the top outer wall of the collection box (17).

8. The airflow pulverizer for silver powder production according to claim 6, characterized in that, The vibrator (22) and the fan (9) are connected to a switch via wires, and the switch is connected to a power source via wires.

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