Photovoltaic silver paste preparation device

Abstract

The present invention discloses a photovoltaic silver paste preparation device, including a shell, a top cover is screwed on the top of the shell, and a discharge pipe is provided on the outer wall of the bottom of the shell, a throttle valve is provided on the outer wall of the discharge pipe, a feed hopper is provided on one side of the top of the top cover, and a sealing cover is screwed on the top of the feed hopper, a screen is provided inside the shell, a handle is fixedly connected to the outer wall of one side of the top cover, a turntable is sealed and rotatably connected to the center of the top of the top cover, and a stirring bending pipe is fixedly connected to the center of the turntable, the other end of the stirring bending pipe passes through the turntable and extends to the outside of the turntable, an isolation cover is provided on the outside of the turntable, and the bottom of the isolation cover is sealed and fixedly connected to the outer wall of the top of the top cover, and a rotating joint is provided at the center of the top of the isolation cover. The present invention can make the photovoltaic silver paste evenly heated during screening, avoid uneven heating, thereby greatly improving the fluidity of the photovoltaic silver paste and ensuring the work efficiency during screening.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic silver paste, and in particular to a photovoltaic silver paste preparation device. Background Art

[0002] Silver paste is a functional material based on silver powder, glass oxide and organic resin. Functionally, it is divided into conductive silver paste, resistive silver paste and electro-melting silver paste. Conductive silver paste accounts for 90% of the market. Photovoltaic silver paste is the main demand area for silver paste, accounting for 87% of the demand for silver paste. In the process of preparing photovoltaic silver paste, it is necessary to go through processes such as batching, mixing, grinding, filtering, screening and testing.

[0003] A Chinese patent with patent application number CN202210363184.2 discloses a photovoltaic silver paste screening and processing equipment with a particle size testing structure, including a fixed plate and a shell, the top of the fixed plate is penetrated by a shell; a temperature gauge is installed on the front of the shell, a control reversing switch is installed on the front of the shell, and an electric heating tube is installed inside the inner wall of the shell; four sets of universal wheels are installed on the bottom of the fixed plate. The present invention is equipped with a thermometer, a control reversing switch and an electric heating tube. After the device is powered on, the thermometer detects the temperature inside the shell, which is convenient for the user to check the temperature of the photovoltaic silver paste. When the photovoltaic silver paste needs to be heated, the control reversing switch can be moved by external force. At this time, the control reversing switch transmits electric energy to the inside of the electric heating tube. After the electric heating tube is powered on, the heat is released to the inside of the shell through the electrothermal effect, and the photovoltaic silver paste inside the shell is heated, thereby improving the flow of the photovoltaic silver paste and ensuring the working efficiency of the device at low temperatures. The device heats the photovoltaic silver paste through the electric heating tube. Because the electric heating tube is arranged inside the shell, the photovoltaic silver paste close to the inner wall of the shell is heated first during heating, and the photovoltaic silver paste close to the axis of the shell is heated later, which makes it impossible to heat the photovoltaic silver paste evenly, and thus fails to achieve a good effect.

[0004] In view of this, the present invention proposes a photovoltaic silver paste preparation device to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a photovoltaic silver paste preparation device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A photovoltaic silver paste preparation device comprises a shell, a top cover is screwed on the top of the shell, and a discharge pipe is provided on the outer wall of the bottom of the shell, a throttle valve is provided on the outer wall of the discharge pipe, a feed hopper is provided on one side of the top of the top cover, and a sealing cover is screwed on the top of the feed hopper, a screen is provided inside the shell, a handle is fixedly connected to the outer wall of one side of the top cover, a turntable is sealingly and rotatably connected to the center of the top of the top cover, and a stirring and bending pipe is fixedly connected to the center of the turntable, the other end of the stirring and bending pipe passes through the turntable and extends to the outside of the turntable, an insulating cover is provided on the outside of the turntable, and the bottom of the insulating cover is sealingly and fixedly connected to the outer wall of the top of the top cover, a rotating joint is provided at the center of the top of the insulating cover, and the bottom end of the rotating joint is connected to the stirring and bending pipe at the center of the turntable, an exhaust pipe is connected to one side of the top of the insulating cover, a conveying pipe is provided on the top of the rotating joint, and a heating mechanism is provided at one end of the conveying pipe, and a driving mechanism is provided on the outer wall of the top of the turntable.

[0008] Furthermore, the driving mechanism includes a bevel gear 1, which is fixedly connected to the outer wall of the top of the turntable, and a bevel gear 2 is meshed on one side above the bevel gear 1, and a rotating motor is arranged on one side of the bevel gear 2.

[0009] Furthermore, the heating mechanism includes a heating box, which is fixedly connected to the outer wall of one side of the shell, and a suction fan is provided on the inner wall of the heating box, an air inlet is provided on one side of the suction fan, and a filter is provided on one side of the air inlet, and a plurality of heating wires are provided on the other side of the suction fan.

[0010] Furthermore, a temperature sensor is provided on the inner wall of one end of the delivery pipe connected to the heating box, and a temperature display meter is provided on the outer wall of one end of the heating box, and the temperature sensor is electrically connected to the temperature display meter.

[0011] Furthermore, the outer wall of the stirring and bending tube is sealed and rotatably connected to multiple rotating shafts, and the outer wall of the rotating shaft located inside the stirring and bending tube is evenly and fixedly connected to multiple wind gathering plates, and the outer walls on both sides of the rotating shaft are evenly and fixedly connected to multiple stirring rods.

[0012] Furthermore, four notches are equidistantly provided on the inner wall of the shell, and a sliding groove is provided directly below each notch, an electromagnet is provided on the inner wall at the bottom of the sliding groove, and a plurality of blocks are provided directly above the electromagnet, the plurality of blocks are fixedly connected to the inner wall of the sliding groove, and a magnetic plate is provided directly above the block, a connecting spring is fixedly connected between the magnetic plate and the electromagnet, and the magnetic force generated by the electromagnet after power is supplied repels the magnetic plate.

[0013] Furthermore, the sliding groove and the notch are sealed and slidably connected with a telescopic rod at the connection point, and the bottom end of the telescopic rod is fixedly connected to the top outer wall of the magnetic plate, the top outer wall of the telescopic rod is fixedly connected with a slider, the top of the slider is an inclined surface, and the top of the inclined surface is in close contact with the inner wall of the notch, one side of the slider is fixedly connected with an arc-shaped convex plate, and the screen is fixedly connected to each arc-shaped convex plate by bolts.

[0014] Furthermore, a connecting spring 2 is fixedly connected between two adjacent stirring rods, and a swing plate is fixedly connected to the outer wall of the middle part of the connecting spring 2.

[0015] Furthermore, the upper and lower outer walls of the swing plate are fixedly connected to a U-shaped frame, and the inner walls of the U-shaped frame are rotatably connected to a rotating column, and the outer walls of the rotating column are fixedly connected to a plurality of auxiliary stirring rods.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention drives the stirring and bending tube to rotate through a driving mechanism to stir the photovoltaic silver paste above the screen, and at the same time, the heating mechanism can allow hot air to pass through the stirring and bending tube to heat it, so that the heated stirring and bending tube can heat the photovoltaic silver paste. Because the photovoltaic silver paste is in a state of motion due to stirring, it is ensured that the photovoltaic silver paste can be heated evenly, avoiding uneven heating, greatly improving the fluidity of the photovoltaic silver paste, and ensuring work efficiency during screening.

[0018] 2. In the present invention, when hot air is stirred and bent, through multiple wind-collecting plates on each rotating shaft, each rotating shaft can drive multiple stirring rods to stir the photovoltaic silver paste for a second time under the action of wind force, thereby further improving the efficiency during screening.

[0019] 3. When the screen is cleaned, the screen in the housing can be moved upward, so that the staff can remove the screen in the housing and clean it mechanically, which is simple and practical.

[0020] 4. When the stirring rod is stirring, the photovoltaic silver paste in motion will impact the swing plate, and through the cooperation with the connecting spring 2, the swing plate will be constantly in a shaking state. In this process, the photovoltaic silver paste flowing between the stirring rods can be stirred again by the multiple auxiliary stirring rods on the outer wall of the rotating column, so that the photovoltaic silver paste can be fully stirred and the heat can be fully transferred to the photovoltaic silver paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a photovoltaic silver paste preparation device proposed in Example 1;

[0022] Figure 2 A schematic diagram of the shell structure of a photovoltaic silver paste preparation device proposed in Example 1;

[0023] Figure 3 A schematic diagram of a turntable structure of a photovoltaic silver paste preparation device proposed in Example 1;

[0024] Figure 4 A photovoltaic silver paste preparation device proposed in Example 1 Figure 3 The schematic diagram of the structure section at A in the middle;

[0025] Figure 5 A schematic diagram of the heating box structure of a photovoltaic silver paste preparation device proposed in Example 1;

[0026] Figure 6 A schematic diagram of the cross-sectional structure of a shell of a photovoltaic silver paste preparation device proposed in Example 2;

[0027] Figure 7 A schematic diagram of a slider structure of a photovoltaic silver paste preparation device proposed in Example 2;

[0028] Figure 8 This is a schematic diagram of the stirring rod structure of a photovoltaic silver paste preparation device proposed in Example 3.

[0029] In the figure: 1, shell; 2, top cover; 3, feed hopper; 4, isolation cover; 5, conveying pipe; 6, exhaust pipe; 7, handle; 8, sealing cover; 9, discharge pipe; 10, screen; 11, heating box; 12, temperature display; 13, stirring bending pipe; 14, turntable; 15, bevel gear 1; 16, rotary joint; 17, bevel gear 2; 18, rotating motor; 19, rotating shaft; 20, stirring stick; 21, Wind gathering plate; 22. suction fan; 23. heating wire; 24. temperature sensor; 25. air inlet; 26. filter; 27. electromagnet; 28. sliding groove; 29. ​​magnetic plate; 30. telescopic rod; 31. slider; 32. missing groove; 33. block; 34. connecting spring 1; 35. arc convex plate; 36. auxiliary stirring rod; 37. rotating column; 38. connecting spring 2; 39. U-shaped frame; 40. swing plate. DETAILED DESCRIPTION

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] Example 1

[0032] Reference Figure 1-Figure 5A photovoltaic silver paste preparation device comprises a shell 1, a top cover 2 is screwed on the top of the shell 1, and a discharge pipe 9 is arranged on the outer wall of the bottom of the shell 1, a throttle valve is arranged on the outer wall of the discharge pipe 9, a feed hopper 3 is arranged on one side of the top of the top cover 2, and a sealing cover 8 is screwed on the top of the feed hopper 3, a screen 10 is arranged inside the shell 1, a handle 7 is fixedly connected to the outer wall of one side of the top cover 2, a turntable 14 is sealed and rotatably connected to the center of the top of the top cover 2, and a stirring and bending pipe 13 is fixedly connected to the center of the turntable 14, the other end of the stirring and bending pipe 13 passes through the turntable 14 and extends to the outside of the turntable 14, an isolation cover 4 is arranged on the outside of the turntable 14, and the bottom of the isolation cover 4 is sealed and fixedly connected to the outer wall of the top of the top cover 2, a rotary joint 16 is arranged at the center of the top of the isolation cover 4, and the bottom end of the rotary joint 16 is connected to the stirring and bending pipe 13 at the center of the turntable 14, an exhaust pipe 6 is connected to one side of the top of the isolation cover 4, a conveying pipe 5 is arranged on the top of the rotary joint 16, and the conveying pipe 5 A heating mechanism is provided at one end, and a driving mechanism is provided on the outer wall of the top of the turntable 14. The device is connected to a power supply, and then the photovoltaic silver paste to be screened is poured into the shell 1 through the feed hopper 3, and then the driving mechanism and the heating mechanism are operated through an external controller. The driving mechanism can make the turntable 14 rotate, thereby driving the stirring and bending tube 13 in the middle of the turntable 14 to stir the photovoltaic silver paste above the screen 10 inside the shell 1. At the same time, the heating mechanism can make hot air enter the stirring and bending tube 13 through the rotary joint 16, and then come out from the other end of the stirring and bending tube 13, and finally be discharged to the outside through the discharge pipe 6, so that the stirring and bending tube 13 becomes hot, so that the heated stirring and bending tube 13 can heat the photovoltaic silver paste, and because the photovoltaic silver paste is in a moving state due to stirring, it is ensured that the photovoltaic silver paste can be heated evenly, and uneven heating is avoided, which greatly improves the fluidity of the photovoltaic silver paste and ensures the work efficiency during screening.

[0033] As a further solution in the present invention, the driving mechanism includes a bevel gear 15, which is fixedly connected to the outer wall of the top of the turntable 14, and a bevel gear 2 17 is meshed on one side above the bevel gear 15. A rotating motor 18 is provided on one side of the bevel gear 2 17. The rotating motor 18 can drive the bevel gear 2 17 to rotate, and the bevel gear 2 17 is meshed with the bevel gear 15 to rotate the turntable 14.

[0034] As a further solution in the present invention, the heating mechanism includes a heating box 11, which is fixedly connected to the outer wall of one side of the shell 1, and a suction fan 22 is provided on the inner wall of the heating box 11, an air inlet 25 is provided on one side of the suction fan 22, and a filter 26 is provided on one side of the air inlet 25, and a plurality of heating wires 23 are provided on the other side of the suction fan 22, so that the suction fan 22 inside the heating box 11 can operate and suck external gas into the heating box 11, and the inhaled gas will be heated by the plurality of heating wires 23 in the heating box 11, and then the hot air enters the stirring and bending tube 13 through the conveying pipe 5 to heat it; and the inhaled gas will be filtered out of impurity particles by the filter 26 to avoid a large amount of impurity particles adhering to the conveying pipe 5 or the stirring and bending tube 13 due to long-term use, causing blockage and affecting the heating effect.

[0035] As a further solution in the present invention, a temperature sensor 24 is provided on the inner wall of one end of the conveying pipe 5 connected to the heating box 11, and a temperature display meter 12 is provided on the outer wall of one end of the heating box 11. The temperature sensor 24 is electrically connected to the temperature display meter 12. The temperature sensor 24 can monitor the temperature of the hot air entering the conveying pipe 5 and display it through the temperature display meter 12. When the temperature is too high, it can be adjusted through an external controller to avoid volatilization caused by excessive temperature.

[0036] As a further solution in the present invention, the outer wall of the stirring and bending tube 13 is sealed and rotatably connected with multiple rotating shafts 19, and the outer wall of the rotating shaft 19 located inside the stirring and bending tube 13 is evenly and fixedly connected with multiple wind collecting plates 21, and the outer walls on both sides of the rotating shaft 19 are evenly and fixedly connected with multiple stirring rods 20. When the hot air flows inside the bending tube 13 while stirring, the multiple wind collecting plates 21 on each rotating shaft 19 can drive the multiple stirring rods 20 to stir the photovoltaic silver paste for a second time under the action of wind force, thereby further improving the efficiency during screening.

[0037] Working principle: connect the device to a power source, then pour the photovoltaic silver paste to be screened into the shell 1 through the feed hopper 3, and then operate the driving mechanism and the heating mechanism through an external controller. The rotating motor 18 of the driving mechanism can drive the bevel gear 2 17 to rotate, and the bevel gear 2 17 and the bevel gear 1 15 are meshed with each other to rotate the turntable 14, thereby driving the stirring and bending tube 13 in the middle of the turntable 14 to stir the photovoltaic silver paste above the screen 10 inside the shell 1, and at the same time, the suction fan 22 inside the heating box 11 is operated, so that the external gas can be sucked into the heating box 1 1, the inhaled gas will be heated by the multiple heating wires 23 in the heating box 11, and then the hot air enters the stirring and bending tube 13 through the conveying pipe 5 and the rotary joint 16, and then comes out from the other end of the stirring and bending tube 13, and finally is discharged to the outside through the discharge pipe 6, so that the stirring and bending tube 13 becomes hot, so that the heated stirring and bending tube 13 can heat the photovoltaic silver paste, and because the photovoltaic silver paste is in a state of motion due to stirring, it is ensured that the photovoltaic silver paste can be evenly heated, avoiding uneven heating, greatly improving the fluidity of the photovoltaic silver paste, and ensuring the work efficiency during screening.

[0038] Example 2

[0039] Reference Figure 1-Figure 7 , a photovoltaic silver paste preparation device, compared with Example 1, on the basis of Example 1, four notches 32 are equidistantly provided on the inner wall of the shell 1, and a sliding groove 28 is provided directly below each notch 32, an electromagnet 27 is provided on the inner wall at the bottom of the sliding groove 28, and a plurality of blocks 33 are provided directly above the electromagnet 27, the plurality of blocks 33 are fixedly connected to the inner wall of the sliding groove 28, and a magnetic plate 29 is provided directly above the block 33, a connecting spring 34 is fixedly connected between the magnetic plate 29 and the electromagnet 27, and the magnetic force generated by the electromagnet 27 after being energized repels the magnetic plate 29, when the screen 10 inside the shell 1 needs to be cleaned, the electromagnet 27 in the sliding groove 28 is energized through an external controller, and the electromagnet 27 generates a magnetic force after being energized to push the magnetic plate 29 to move upward, and the connecting spring 34 is stretched at the same time.

[0040] As a further solution in the present invention, the connection between the sliding groove 28 and the missing groove 32 is sealed and slidably connected with a telescopic rod 30, and the bottom end of the telescopic rod 30 is fixedly connected to the top outer wall of the magnetic plate 29, and the top outer wall of the telescopic rod 30 is fixedly connected with a slider 31. The top of the slider 31 is an inclined surface, and the top of the inclined surface is in close contact with the inner wall of the missing groove 32. One side of the slider 31 is fixedly connected with an arc-shaped convex plate 35. The screen 10 is fixedly connected to each arc-shaped convex plate 35 by bolts, and the magnetic plate 29 will make the telescopic rod 30 extend out of the sliding groove 28, so that the slider 31 can move upward along the missing groove 32. Because the top of the inclined surface at the top of the slider 31 is in close contact with the inner wall of the missing groove 32, the photovoltaic silver paste or impurities attached to the inner wall of the missing groove 32 can be scraped off and fall onto the screen 10 along the inclined surface, so that the inner wall of the missing groove 32 can be cleaned; and when the screen 10 extends out of the shell 1, it can be cleaned by removing the bolts to remove the impurity particles on its surface to ensure its filtering effect.

[0041] Working principle: when it is necessary to clean the screen 10 inside the shell 1, the electromagnet 27 in the slide groove 28 is energized through the external controller. After the electromagnet 27 is energized, it will generate magnetic force to push the magnetic plate 29 to move upward. At the same time, the connecting spring 34 is stretched, and the magnetic plate 29 will make the telescopic rod 30 extend out of the slide groove 28, so that the slider 31 can move upward along the notch 32. Because the top of the inclined surface at the top of the slider 31 is in close contact with the inner wall of the notch 32, the photovoltaic silver paste or impurities attached to the inner wall of the notch 32 can be scraped off, so that they fall onto the screen 10 along the inclined surface, so that the inner wall of the notch 32 can be cleaned; and when the screen 10 extends out of the shell 1, it can be cleaned by removing the bolts to remove the impurity particles on its surface to ensure its filtering effect.

[0042] Example 3

[0043] Reference Figure 1-Figure 8 , a photovoltaic silver paste preparation device, compared with Example 2, on the basis of Example 2, a connecting spring 2 38 is fixedly connected between two adjacent stirring rods 20, and a swing plate 40 is fixedly connected to the outer wall of the middle part of the connecting spring 2 38. When the stirring rod 20 on the rotating shaft 19 stirs the photovoltaic silver paste on the screen 10, the photovoltaic silver paste is in motion, and the moving photovoltaic silver paste will hit the swing plate 40, and through the cooperation with the connecting spring 2 38, the swing plate 40 is in a shaking state.

[0044] As a further solution in the present invention, the upper and lower outer walls of the swing plate 40 are fixedly connected to the U-shaped frame 39, and the inner walls of the U-shaped frame 39 are rotatably connected to the rotating column 37, and the outer walls of the rotating column 37 are fixedly connected to multiple auxiliary stirring rods 36. The shaking swing plate 40 will drive the U-shaped frames 39 above and below it to shake at the same time, so that the photovoltaic silver paste flowing between the stirring rods 20 can be stirred again by the multiple auxiliary stirring rods 36 on the outer walls of the rotating column 37, so that the photovoltaic silver paste can be fully stirred and the heat can be fully transferred to the photovoltaic silver paste.

[0045] Working principle: When the stirring rod 20 on the rotating shaft 19 stirs the photovoltaic silver paste on the screen 10, the photovoltaic silver paste is in motion, and the moving photovoltaic silver paste will hit the swing plate 40, and through the cooperation with the connecting spring 2 38, the swing plate 40 is in a shaking state, and the shaking swing plate 40 will drive the U-shaped frames 39 above and below it to shake at the same time, so that the photovoltaic silver paste flowing between the stirring rods 20 is stirred again through the multiple auxiliary stirring rods 36 on the outer wall of the rotating column 37, so that the photovoltaic silver paste can be fully stirred and the heat can be fully transferred to the photovoltaic silver paste.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic silver paste preparation device, comprising a shell (1), a top cover (2) screwed on the top of the shell (1), and a discharge pipe (9) is arranged on the outer wall of the bottom of the shell (1), and a throttle valve is arranged on the outer wall of the discharge pipe (9), a feed hopper (3) is arranged on one side of the top of the top cover (2), and a sealing cover (8) is screwed on the top of the feed hopper (3), a screen (10) is arranged inside the shell (1), and a handle (7) is fixedly connected to the outer wall of one side of the top cover (2), characterized in that: The top center of the top cover (2) is sealed and rotatably connected to a turntable (14), and the center of the turntable (14) is fixedly connected to a stirring and bending tube (13), the other end of the stirring and bending tube (13) passes through the turntable (14) and extends to the outside of the turntable (14), an isolation cover (4) is arranged outside the turntable (14), and the bottom of the isolation cover (4) is sealed and fixedly connected to the top outer wall of the top cover (2), a rotating joint (16) is arranged at the top center of the isolation cover (4), and the bottom end of the rotating joint (16) is connected to the stirring and bending tube (13) at the center of the turntable (14), one side of the top of the isolation cover (4) is connected to an exhaust pipe (6), a conveying pipe (5) is arranged at the top of the rotating joint (16), and a heating mechanism is arranged at one end of the conveying pipe (5), and a driving mechanism is arranged on the top outer wall of the turntable (14); The outer wall of the stirring and bending tube (13) is sealed and rotatably connected to a plurality of rotating shafts (19), and the outer wall of the rotating shaft (19) located inside the stirring and bending tube (13) is evenly and fixedly connected to a plurality of wind gathering plates (21), and the outer walls on both sides of the rotating shaft (19) are evenly and fixedly connected to a plurality of stirring rods (20); A second connecting spring (38) is fixedly connected between two adjacent stirring rods (20), and a swing plate (40) is fixedly connected to the outer wall of the middle portion of the second connecting spring (38); The upper and lower outer walls of the swing plate (40) are fixedly connected to a U-shaped frame (39), and the inner wall of the U-shaped frame (39) is rotatably connected to a rotating column (37), and the outer wall of the rotating column (37) is fixedly connected to a plurality of auxiliary stirring rods (36).

2. A photovoltaic silver paste preparation device according to claim 1, characterized in that: The driving mechanism comprises a bevel gear 1 (15), the bevel gear 1 (15) is fixedly connected to the top outer wall of the turntable (14), and a bevel gear 2 (17) is meshed on one side above the bevel gear 1 (15), and a rotating motor (18) is arranged on one side of the bevel gear 2 (17).

3. A photovoltaic silver paste preparation device according to claim 2, characterized in that: The heating mechanism comprises a heating box (11), the heating box (11) is fixedly connected to an outer wall of one side of the shell (1), and a suction fan (22) is arranged on the inner wall of the heating box (11), an air inlet (25) is arranged on one side of the suction fan (22), and a filter screen (26) is arranged on one side of the air inlet (25), and a plurality of heating wires (23) are arranged on the other side of the suction fan (22).

4. A photovoltaic silver paste preparation device according to claim 3, characterized in that: A temperature sensor (24) is disposed on the inner wall of one end of the delivery pipe (5) connected to the heating box (11), and a temperature display meter (12) is disposed on the outer wall of one end of the heating box (11), and the temperature sensor (24) is electrically connected to the temperature display meter (12).

5. The photovoltaic silver paste preparation device according to claim 1, characterized in that: The inner wall of the shell (1) is provided with four notches (32) at equal intervals, and a sliding groove (28) is provided directly below each notch (32), an electromagnet (27) is provided on the inner wall at the bottom of the sliding groove (28), and a plurality of blocks (33) are provided directly above the electromagnet (27), the plurality of blocks (33) are fixedly connected to the inner wall of the sliding groove (28), and a magnetic plate (29) is provided directly above the block (33), a connecting spring (34) is fixedly connected between the magnetic plate (29) and the electromagnet (27), and the magnetic force generated by the electromagnet (27) after being energized repels the magnetic plate (29).

6. A photovoltaic silver paste preparation device according to claim 5, characterized in that: The connection between the sliding groove (28) and the notch (32) is sealed and slidably connected with a telescopic rod (30), and the bottom end of the telescopic rod (30) is fixedly connected to the top outer wall of the magnetic plate (29). The top outer wall of the telescopic rod (30) is fixedly connected with a slider (31). The top of the slider (31) is an inclined surface, and the top of the inclined surface is tightly attached to the inner wall of the notch (32). One side of the slider (31) is fixedly connected with an arc-shaped convex plate (35), and the screen (10) is fixedly connected to each arc-shaped convex plate (35) by bolts.

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