A silver paste rapid dispersion device

Abstract

This invention provides a rapid silver paste dispersion device, belonging to the field of silver paste dispersion technology. It includes a disperser with a housing mounted on top. A stirring shaft is rotatably connected to the bottom of the disperser, and a stirring disc is mounted on the bottom of the stirring shaft for dispersing the silver paste. A vertical rod is fixed to the bottom of the housing, and a cover plate is fixed to the bottom of the vertical rod. The cover plate is movably fitted onto the stirring shaft, and a scraping mechanism is provided at the bottom of the cover plate. The scraping mechanism includes a support plate disposed on the side of the stirring shaft, and a rubber scraper is fixed to the top of the support plate. During the rotation of the stirring shaft, the rubber scraper moves along the bottom of the cover plate. This invention, by setting up a support plate and a rubber scraper, allows the rubber scraper to rotate along the bottom of the cover plate during the rotation of the stirring shaft, thereby scraping off the paste adhering to the bottom of the cover plate. The scraped paste falls back into the slurry inside the mixing drum, thus reducing waste and simplifying subsequent cleaning.

Description

Technical Field

[0001] This utility model relates to the field of silver paste dispersion technology, and in particular to a rapid silver paste dispersion device. Background Technology

[0002] Photovoltaic silver paste is a conductive paste used in the manufacture of solar cells. It is mainly composed of silver powder, glass oxide, organic solvents and other materials. It is then coated on the surface of solar cells through a printing process to form electrodes. In the production process of photovoltaic silver paste, a high-speed disperser is used to disperse, stir and mix the raw materials. Multiple raw materials are added into a mixing drum, and then the stirring plate of the high-speed disperser is lowered and inserted into the raw materials in the mixing drum. The electrodes drive the stirring plate at the bottom of the stirring shaft to rotate at high speed through a belt drive mechanism, so as to achieve rapid dispersion, stirring and mixing of multiple raw materials. However, the raw materials are prone to splashing in the mixing drum during high-speed stirring.

[0003] A search revealed that Chinese Patent CN217016322U discloses a silver paste disperser for processing conductive paste for solar cells. The disperser includes a base plate, a rotating shaft, a bearing, and a placement tank. A cover plate is mounted on the outer wall of the bearing, a sealing gasket is mounted on the bottom of the cover plate, and a fixing plate is mounted on the bottom of the cover plate. A telescopic rod is mounted on the outer wall of the fixing plate, and a clamping block is mounted at one end of the telescopic rod. A threaded rod is mounted on the inner wall of the support plate. With the cover plate, sealing gasket, and clamping block installed, when silver paste needs to be dispersed, the rotating shaft gradually descends, causing the cover plate to contact the top of the storage tank. The sealing gasket seals the top of the storage tank. At this time, a second motor rotates, driving the clamping block to move, clamping it onto the outer wall of the storage tank, thus fixing the cover plate on the storage tank. This structure prevents the paste from splashing out of the storage tank during dispersion, improving practicality.

[0004] The aforementioned patent uses a cover plate to prevent the slurry from splashing out of the storage cylinder. However, during the slurry stirring process, some of the splashed slurry will adhere to the bottom of the cover plate. When the cover plate is moved up after the dispersion and stirring are completed, the slurry attached to the bottom of the cover plate will drip down, causing waste. Moreover, the dripping slurry will pollute the working environment and affect the subsequent cleaning work. Therefore, this application provides a silver paste rapid dispersion device to meet the needs. Summary of the Invention

[0005] This invention provides a rapid silver paste dispersion device to solve the problem that after the paste is dispersed and stirred, the paste adhering to the bottom of the cover plate drips downwards, causing waste, and the dripping paste pollutes the working environment, affecting subsequent cleaning work.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A rapid silver paste dispersion device includes a disperser. A housing is installed on the top of the disperser, and a stirring shaft is rotatably connected to the bottom of the housing. A stirring plate is installed at the bottom of the stirring shaft and is used for dispersing silver paste. A vertical rod is fixed to the bottom of the housing, and a cover plate is fixed to the bottom of the vertical rod. The cover plate is movably sleeved on the stirring shaft, and a scraping mechanism is provided at the bottom of the cover plate.

[0008] The scraping mechanism includes a support plate disposed on the side of the stirring shaft, and a rubber scraper is fixed on the top of the support plate. During the rotation of the stirring shaft, the rubber scraper moves along the bottom of the cover plate.

[0009] Preferably, a semi-circular cover is fixed to the side of the support plate, and the semi-circular cover is fixed to the circumferential surface of the stirring shaft by bolts.

[0010] Preferably, a connecting strip is fixed to the top of the support plate, and a rubber scraper is wrapped around the connecting strip.

[0011] Preferably, the connecting strip has a through hole on its side.

[0012] Preferably, a connecting block is fixed to the side of the connecting strip near the top, and a rubber scraper is wrapped around the connecting block.

[0013] Preferably, the connecting block is in the shape of a right triangle.

[0014] Preferably, a spring sheet is fixed to the side of the support plate, and the side of the spring sheet is fixedly connected to the side of the rubber scraper near the top.

[0015] Preferably, an L-shaped guide strip is fixed to the side of the support plate, and the height of the end of the L-shaped guide strip near the stirring shaft is higher than the height of the end of the L-shaped guide strip away from the stirring shaft.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects:

[0017] In the above solution, by setting a support plate and a rubber scraper, the rubber scraper is driven by the support plate to rotate along the bottom of the cover plate during the rotation of the mixing shaft, so as to scrape off the slurry attached to the bottom of the cover plate. The scraped slurry falls back into the slurry in the mixing drum, thereby reducing waste and reducing the trouble of subsequent cleaning.

[0018] By setting a spring, the elastic force of the spring acts on the rubber scraper. After the rubber scraper wears down, it remains in close contact with the bottom of the cover plate under the combined action of its own elasticity and the elastic force of the spring, thus ensuring the cleaning ability of the rubber scraper on the bottom of the cover plate.

[0019] By setting up L-shaped guide strips, the slurry scraped by the rubber scraper flows downward along the rubber scraper and the support plate. Under the guidance of the L-shaped guide strips, the slurry is discharged from the lower end of the L-shaped guide strips, thereby preventing the slurry from dripping down onto the mixing plate at the bottom of the mixing shaft and reducing the trouble of cleaning the mixing plate later.

[0020] By setting connecting strips, through holes, and connecting blocks, the contact area between the rubber scraper and the support plate is increased, thereby improving the tightness of the connection between the rubber scraper and the support plate and preventing cracking or damage at the connection between the rubber scraper and the support plate after the rubber scraper has been under stress for a long time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the support plate of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the L-shaped drainage strip of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the connecting strip of this utility model.

[0025] In the diagram: 1. Disperser; 2. Shell; 3. Stirring shaft; 4. Cover plate; 5. Scraping mechanism; 6. Support plate; 7. Rubber scraper; 8. Spring; 9. Connecting strip; 10. Through hole; 11. Connecting block; 12. Semi-circular cover; 13. L-shaped guide strip.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0027] The following is a detailed description of a rapid silver paste dispersion device provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0028] like Figures 1-4As shown, an embodiment of the present invention provides a silver paste rapid dispersion device, including a disperser 1, a housing 2 installed on the top of the disperser 1, a stirring shaft 3 rotatably connected to the bottom of the housing 2, a stirring plate installed at the bottom of the stirring shaft 3, the stirring plate being used for dispersing silver paste, a vertical rod fixed at the bottom of the housing 2, a cover plate 4 fixed at the bottom of the vertical rod, the cover plate 4 being movably sleeved on the stirring shaft 3, and a scraping mechanism 5 provided at the bottom of the cover plate 4;

[0029] The scraping mechanism 5 includes a support plate 6 set on the side of the stirring shaft 3. A rubber scraper 7 is fixed on the top of the support plate 6. During the rotation of the stirring shaft 3, the rubber scraper 7 moves along the bottom of the cover plate 4. After the disperser 1 is started, the stirring shaft 3 drives the stirring disc to rotate at high speed to achieve rapid dispersion of the silver paste. At the same time, the cover plate 4 can prevent the silver paste from splashing out of the stirring drum during the stirring process. When the stirring shaft 3 rotates, the support plate 6 and the rubber scraper 7 in the scraping mechanism 5 will scrape off the paste attached to the bottom of the cover plate 4 by moving the rubber scraper 7 along the bottom of the cover plate 4. This allows the scraped paste to fall back into the slurry in the stirring drum, reducing the waste of silver paste and reducing the workload of cleaning the cover plate 4 afterward.

[0030] like Figure 2 As shown in this embodiment, a semi-circular cover 12 is fixed to the side of the support plate 6. The semi-circular cover 12 is fixed to the circumferential surface of the stirring shaft 3 by bolts. The semi-circular cover 12 is fixedly connected to the stirring shaft 3 by bolts, which can ensure a stable connection between the support plate 6 and the stirring shaft 3. This allows the stirring shaft 3 to reliably drive the support plate 6 to rotate synchronously during high-speed rotation, thereby ensuring that the rubber scraper 7 can stably scrape the bottom of the cover plate 4. When the rubber scraper 7 is worn out and needs to be replaced, the bolts fixing the semi-circular cover 12 are unscrewed, and then the new semi-circular cover 12 on the support plate 6 is attached to the side of the stirring shaft 3 and fixed with bolts.

[0031] like Figure 4 As shown in this embodiment, a connecting strip 9 is fixed to the top of the support plate 6, and a rubber scraper 7 is wrapped around the connecting strip 9. The connecting strip 9 provides an installation base for the rubber scraper 7, so that the rubber scraper 7 can be stably installed on the support plate 6. During the process of the stirring shaft 3 driving the rubber scraper 7 to rotate and scrape the slurry, the rubber scraper 7 is prevented from falling off the support plate 6, thus ensuring the normal operation of the scraping mechanism 5.

[0032] like Figure 4 As shown in this embodiment, the connecting strip 9 has a through hole 10 on its side. The through hole 10 increases the contact area between the connecting strip 9 and the rubber scraper 7. When the rubber scraper 7 is wrapped around the connecting strip 9, the tightness of the connection between the two is increased, which can effectively prevent the rubber scraper 7 from sliding relative to the connecting strip 9 during long-term rotation under force, and further improve the firmness of the installation of the rubber scraper 7.

[0033] like Figure 4 As shown in this embodiment, a connecting block 11 is fixed on the side of the connecting strip 9 near the top position, and the rubber scraper 7 is wrapped around the connecting block 11. The connecting block 11 further increases the contact area between the rubber scraper 7 and the connecting strip 9, thereby further improving the tightness of the connection between the rubber scraper 7 and the connecting strip 9.

[0034] like Figure 4 As shown in this embodiment, the connecting block 11 is a right triangle. The right triangle connecting block 11 has a stable structural shape. Its inclined surface design can better fit the wrapping shape of the rubber scraper 7, reduce the wrapping dead angle during wrapping, and ensure the stable connection between the rubber scraper 7 and the connecting block 11.

[0035] like Figure 3 As shown in this embodiment, a spring piece 8 is fixed to the side of the support plate 6. The side of the spring piece 8 is fixedly connected to the side of the rubber scraper 7 near the top. After the rubber scraper 7 wears down after long-term use, the elastic force generated by the spring piece 8 can cooperate with the elasticity of the rubber scraper 7 itself to continuously provide pressure to the bottom of the cover plate 4, ensuring that the rubber scraper 7 can maintain a tight fit with the bottom of the cover plate 4 even when it is worn, maintaining a stable scraping effect, avoiding a decrease in cleaning ability due to wear of the rubber scraper 7, and ensuring that the device can still effectively clean the slurry at the bottom of the cover plate 4 during long-term use.

[0036] like Figure 3 As shown in this embodiment, an L-shaped guide strip 13 is fixed to the side of the support plate. The height of the end of the L-shaped guide strip 13 near the stirring shaft 3 is higher than the height of the end of the L-shaped guide strip 13 away from the stirring shaft 3. When the slurry scraped by the rubber scraper 7 flows downward along the rubber scraper 7 and the support plate 6, the L-shaped guide strip 13 uses the height difference to achieve directional guidance, guiding the slurry to be discharged from the lower end, preventing the slurry from dripping downward onto the stirring plate at the bottom of the stirring shaft 3, and reducing the trouble of cleaning the stirring plate later.

[0037] Working principle: The hydraulic cylinder of the disperser 1 drives the stirring shaft 3 and the stirring plate to rise, placing the stirring drum below the stirring plate. Then, the piston rod of the hydraulic cylinder is shortened, causing the stirring plate at the bottom of the stirring shaft 3 to insert into the slurry inside the stirring drum. At the same time, the cover plate 4 covers the top of the stirring drum to prevent the slurry from splashing out of the stirring drum during the dispersion and mixing process. Meanwhile, the semi-circular cover 12 fixed to the circumference of the stirring shaft 3 drives the support plate 6 to rotate synchronously. The rubber scraper 7 on the top of the support plate 6 is in close contact with the bottom of the cover plate 4. As the stirring shaft 3 rotates, the rubber scraper 7 scrapes off the slurry attached to the bottom of the cover plate 4. The scraped slurry falls directly back into the slurry inside the stirring drum, effectively reducing the waste of silver paste and reducing the workload of cleaning the cover plate 4 afterward.

[0038] During long-term use, the rubber scraper 7 will wear due to friction. The elasticity generated by the spring sheet 8 and the elasticity of the rubber scraper 7 work together to continuously provide pressure to the bottom of the cover plate 4, ensuring that the rubber scraper 7 can maintain a tight fit with the bottom of the cover plate 4 even when it is worn, thus maintaining a stable scraping effect.

[0039] To prevent the scraped slurry from dripping onto the mixing plate at the bottom of the mixing shaft 3, which would increase the difficulty of cleaning, an L-shaped guide strip 13 is provided on the side of the support plate 6 to achieve directional flow by utilizing the height difference. As the slurry flows downward along the rubber scraper 7 and the support plate 6, the slurry flows into the L-shaped guide strip 13, which guides the slurry to be discharged from the lower end, preventing the slurry from dripping onto the mixing plate at the bottom of the mixing shaft 3 and reducing the trouble of cleaning the mixing plate later.

[0040] The connecting strip 9 is embedded inside the rubber scraper 7, the through hole 10 increases the contact area between the rubber scraper 7 and the connecting strip 9, and the connecting block 11 further strengthens the fixing effect of the top of the rubber scraper 7. The three work together to prevent the rubber scraper 7 from cracking or being damaged at the connection with the support plate 6 during long-term rotation under force, thus ensuring the durability and reliability of the scraping mechanism 5.

[0041] After the slurry is stirred, the hydraulic cylinder of the disperser 1 is used to lift the stirring shaft 3 and the stirring plate, and then the stirring drum is removed from under the stirring plate.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rapid silver paste dispersion device, comprising a disperser (1), wherein a housing (2) is mounted on the top of the disperser (1), a stirring shaft (3) is rotatably connected to the bottom of the housing (2), and a stirring plate is mounted on the bottom of the stirring shaft (3), the stirring plate being used for dispersing silver paste, characterized in that, A vertical rod is fixed to the bottom of the shell (2), and a cover plate (4) is fixed to the bottom of the vertical rod. The cover plate (4) is movably sleeved on the stirring shaft (3), and a scraping mechanism (5) is provided at the bottom of the cover plate (4). The scraping mechanism (5) includes a support plate (6) set on the side of the stirring shaft (3), and a rubber scraper (7) is fixed on the top of the support plate (6). During the rotation of the stirring shaft (3), the rubber scraper (7) is driven to move along the bottom of the cover plate (4).

2. The silver paste quick dispersion device according to claim 1, characterized in that, A semi-circular cover (12) is fixed to the side of the support plate (6), and the semi-circular cover (12) is fixed to the circumferential surface of the stirring shaft (3) by bolts.

3. The silver paste quick dispersion device according to claim 1, wherein, A connecting strip (9) is fixed to the top of the support plate (6), and a rubber scraper (7) is wrapped around the connecting strip (9).

4. The silver paste quick dispersion device according to claim 3, characterized in that, The connecting strip (9) has a through hole (10) on its side.

5. The silver paste quick dispersion device according to claim 3, wherein, A connecting block (11) is fixed to the side of the connecting strip (9) near the top, and a rubber scraper (7) is wrapped around the connecting block (11).

6. The silver paste quick dispersion device according to claim 5, wherein, The connecting block (11) is a right triangle.

7. The silver paste quick dispersion device according to claim 1, wherein The side of the support plate (6) is fixed with a spring piece (8), and the side of the spring piece (8) near the top is fixedly connected to the side of the rubber scraper (7).

8. The silver paste quick dispersion device according to claim 1, wherein, The side of the support plate is fixed with an L-shaped guide strip (13), and the height of the end of the L-shaped guide strip (13) near the stirring shaft (3) is higher than the height of the end of the L-shaped guide strip (13) away from the stirring shaft (3).

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