A high borosilicate glass raw material batching and stirring device

Abstract

The utility model discloses a kind of batching and stirring devices of high borosilicate glass raw materials, including stirring tank, discharging cone, support and driving motor.The transmission case is installed on the upper end of stirring tank, it is equipped with worm and the worm wheel meshed with it driven by driving motor inside, worm wheel drives driving shaft that penetrates stirring tank to rotate.Driving shaft is equipped with stirring blade and spiral blade that extends into discharging cone, to realize main stirring and bottom material lifting.Driving shaft is connected with inner wall cleaning structure by upper and lower support arm, and the structure is composed of mounting plate, scraper, guide rod, movable block, tension spring and electromagnet.By on-off control of electromagnet to stretch and retract of scraper, it can tightly scrape the material adhered to tank wall when needed.The utility model effectively solves the problem that high borosilicate glass raw material is easy to stick to wall and easy to accumulate at bottom, improves mixing uniformity and stirring efficiency, and operation is intelligent, safe.

Description

Technical Field

[0001] This utility model relates to the field of high borosilicate glass production technology, specifically to a batching and mixing device for high borosilicate glass raw materials. Background Technology

[0002] High borosilicate glass, due to its excellent thermal stability, chemical stability, and mechanical strength, is widely used in laboratory glassware, medical ampoules, high-temperature windows, and solar collector tubes. In the production process of high borosilicate glass, the batching and mixing of raw materials are crucial preliminary steps, as the uniformity of the mixing directly affects the smooth progress of subsequent melting processes and the quality of the final glass products.

[0003] Currently, mechanical stirring devices are mostly used for mixing high borosilicate glass raw materials. These devices typically include a mixing tank, inside which a motor-driven stirring shaft moves stirring blades to mix powdery or granular raw materials (such as quartz sand, boric acid, borax, clarifying agents, etc.). However, in practical applications, existing stirring devices have the following significant drawbacks: First, high borosilicate glass raw materials are mostly fine powders, which are easily adsorbed onto the inner wall of the mixing tank during the stirring process due to electrostatic adsorption, moisture, or the stickiness of the raw materials themselves. These adhering materials not only waste raw materials, but more seriously, they form "dead zones" that are difficult to reach by the main stirring flow field, causing the actual proportion of batch materials to deviate from the preset value and affecting the uniformity of the glass composition.

[0004] Secondly, the mixing effect of common mixing devices is mainly concentrated in the upper and middle cavities of the mixing tank, while the mixing effect is often weaker in the bottom, especially in the area of ​​the conical discharge hopper. The material in this area has poor flowability, is prone to accumulation, and is difficult to be effectively lifted and participate in the main circulation, resulting in uneven mixing of the material in the discharge hopper.

[0005] Therefore, we propose a batching and mixing device for high borosilicate glass raw materials. Utility Model Content

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a batching and mixing device for high borosilicate glass raw materials. It achieves automatic cleaning of material adhering to the tank wall on demand through an electromagnetically controlled retractable scraper, and enhances the bottom material circulation through spiral blades extending to the discharge cone, effectively solving the problems of material sticking to the wall and bottom accumulation. This can effectively solve the problems in the background technology.

[0007] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a batching and mixing device for high borosilicate glass raw materials, comprising a mixing tank, a feeding cone fixedly installed on the lower outer surface of the mixing tank, a support installed at the lower part of the mixing tank, a feeding port provided at the lower part of the feeding cone, a feeding inlet provided on one side of the upper end of the mixing tank, a transmission box fixedly installed in the middle of the upper outer surface of the mixing tank, a drive motor fixedly installed on one side of the outer surface of the transmission box, a worm gear and a worm provided inside the transmission box, a drive shaft provided in the middle of the inner cavity of the mixing tank, the top of the drive shaft extending into the interior of the transmission box, and a stirring blade and a spiral blade fixedly installed on the outer wall of the drive shaft. The lower end of the drive shaft extends into the interior of the feeding cone hopper, and the spiral blade at the lower part of the drive shaft extends into the interior of the feeding cone hopper. Upper support arms are fixedly installed on the upper part of the outer surfaces on both sides of the drive shaft, and lower support arms are fixedly installed on the lower part of the outer surfaces on both sides of the drive shaft. An inner wall cleaning structure is fixedly installed between the upper and lower support arms. The inner wall cleaning structure includes a mounting plate, a mounting cavity, a guide ring, an annular sealing lip, a scraper, a guide rod, a tension spring, a movable block, and an electromagnet. The mounting plate is fixed between the upper and lower support arms. Wiring channels are provided inside the mounting plate, the upper support arm, the lower support arm, and the drive shaft. A conductive slip ring is provided at the top of the drive shaft.

[0008] Preferably, a coupling is provided between the worm and the drive motor, and the outer surface of one end of the worm is fixedly connected to the outer surface of one end of the output shaft of the drive motor through the coupling. A sealed bearing is provided between the worm and the transmission box, and the worm is rotatably connected to the transmission box through the sealed bearing.

[0009] Preferably, the worm wheel is fixed to the outer wall of the top of the drive shaft, the worm wheel is located on one side of the outer surface of the worm, one side of the worm meshes with one side of the worm wheel, and the lead angle of the worm is less than or equal to its equivalent friction angle when meshing with the worm wheel.

[0010] Preferably, sealed bearings are provided between the drive shaft and the transmission box and the mixing tank, and the drive shaft is rotatably connected to the transmission box and the mixing tank through the sealed bearings.

[0011] Preferably, the mounting cavity is located inside the mounting plate, the guide rings are fixed at equal intervals on the side of the mounting plate near the inner wall of the mixing tank, the inner cavity of the guide rings communicates with the mounting cavity, the annular sealing lip is fixed at equal intervals on the inner wall of the guide ring, the guide rod is fixed at equal intervals on the inner wall of the scraper away from the mixing tank, the movable block is located in the mounting cavity, the end of the guide rod away from the scraper is fixedly connected to one side of the movable block, the tension spring is movably sleeved on the outside of the guide rod, the tension spring is fixed between one side of the outer surface of the movable block and the side of the mounting cavity near the guide ring, and the electromagnet is fixed on the outer surface of the mounting cavity away from the guide ring.

[0012] Preferably, the scraper is made of wear-resistant rubber or polyurethane.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a batching and stirring device for high borosilicate glass raw materials, which has the following beneficial effects: 1. This batching and mixing device for high borosilicate glass raw materials solves the problem of high borosilicate glass powder easily adhering to the tank wall by setting an inner wall cleaning structure controlled by an electromagnet. When cleaning is required, the electromagnet is de-energized, and the restoring force of the tension spring pushes the scraper to closely adhere to the inner wall of the mixing tank and the discharge cone. During the rotation of the drive shaft, the adhering material can be automatically and thoroughly scraped off. This effectively avoids formula distortion and cross-contamination caused by material adhesion, ensures the accuracy of the composition of each batch of products, and reduces the cleaning burden on workers.

[0014] 2. This high borosilicate glass raw material batching and mixing device achieves active axial conveying of the bottom material by extending the spiral blades at the lower part of the drive shaft into the inside of the feeding cone. When the spiral blades rotate, they can lift the material deposited at the bottom of the cone upwards, allowing it to re-enter the main mixing area in the middle of the mixing tank and fully mix with the flow field formed by the mixing blades. This solves the problems of weak mixing and easy accumulation in the bottom cone area of ​​traditional mixing devices, eliminates the mixing dead zone, and thus improves the overall mixing uniformity and mixing efficiency of the material.

[0015] 3. The batching and mixing device for high borosilicate glass raw materials adopts an electromagnetic control method for the inner wall cleaning structure. Users can flexibly control the working state of the scraper (retract or scrape) by turning the power on and off according to the material adhesion. During normal mixing, the scraper can be retracted to avoid unnecessary wear and energy consumption. It only works when cleaning is required, making the operation of the equipment more intelligent and flexible. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a batching and stirring device for high borosilicate glass raw materials according to this utility model.

[0017] Figure 2 This is a side cross-sectional view of the mixing tank and the discharge cone in a batching and mixing device for high borosilicate glass raw materials according to this utility model.

[0018] Figure 3 This is a top cross-sectional view of the inner wall cleaning structure in a batching and mixing device for high borosilicate glass raw materials according to this utility model.

[0019] Figure 4 This is a top cross-sectional view of the transmission box in a batching and mixing device for high borosilicate glass raw materials according to this utility model.

[0020] In the diagram: 1. Mixing tank; 2. Discharge cone; 3. Discharge port; 4. Support; 5. Transmission box; 6. Drive motor; 7. Conductive slip ring; 8. Drive shaft; 9. Worm gear; 10. Mixing blade; 11. Spiral blade; 12. Upper support arm; 13. Lower support arm; 14. Inner wall cleaning structure; 15. Mounting plate; 16. Mounting cavity; 17. Guide ring; 18. Annular sealing lip; 19. Scraper; 20. Guide rod; 21. Tension spring; 22. Movable block; 23. Electromagnet; 24. Worm gear. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-4 As shown, this utility model provides a batching and mixing device for high borosilicate glass raw materials, including a mixing tank 1. A feeding cone 2 is fixedly installed on the lower outer surface of the mixing tank 1, and a support 4 is installed at the lower part of the mixing tank 1 to support the entire device. A feeding port 3 is provided at the lower part of the feeding cone 2 for discharging materials. A feeding port (not separately labeled in the figure) is provided on one side of the upper end of the mixing tank 1 for feeding various raw materials for high borosilicate glass.

[0023] A transmission box 5 is fixedly installed in the middle of the upper outer surface of the mixing tank 1, and a drive motor 6 is fixedly installed on one side of the outer surface of the transmission box 5. A worm gear 9 and a worm 24 are installed inside the transmission box 5. A drive shaft 8 is located in the middle of the inner cavity of the mixing tank 1, with its top extending into the transmission box 5 and fixed to the worm gear 9. A stirring blade 10 and a spiral blade 11 are fixed to the outer wall of the drive shaft 8, and the lower end of the drive shaft 8 extends into the discharge cone 2, with the spiral blade 11 at the bottom of the drive shaft 8 also extending into the discharge cone 2.

[0024] An upper support arm 12 is fixedly installed on the upper part of the outer surface of both sides of the drive shaft 8, and a lower support arm 13 is fixedly installed on the lower part. An inner wall cleaning structure 14 is fixedly installed between the upper support arm 12 and the lower support arm 13.

[0025] The inner wall cleaning structure 14 includes a mounting plate 15, a mounting cavity 16, a guide ring 17, an annular sealing lip 18, a scraper 19, a guide rod 20, a tension spring 21, a movable block 22, and an electromagnet 23. The mounting plate 15 is fixed between the upper support arm 12 and the lower support arm 13. Wiring channels are provided inside the mounting plate 15, the upper support arm 12, the lower support arm 13, and the drive shaft 8 for the power supply wires of the electromagnet 23 to pass through. A conductive slip ring 7 is provided on the top of the drive shaft 8 to provide a stable power connection to the electromagnet 23 during rotation and to prevent wire tangling.

[0026] The mounting cavity 16 is formed inside the mounting plate 15. Guide rings 17 are fixed at equal intervals on the side of the mounting plate 15 near the inner wall of the mixing tank 1, and their inner cavities communicate with the mounting cavity 16. Annular sealing lips 18 (e.g., made of rubber or flexible plastic) are fixed at equal intervals on the inner wall of the guide rings 17 to prevent powder from entering the mounting cavity 16. Guide rods 20 are fixed at equal intervals on the side of the scraper 19 away from the inner wall of the mixing tank 1. A movable block 22 is located in the mounting cavity 16, and one end of the guide rod 20 away from the scraper 19 passes through the guide ring 17 and is fixedly connected to one side of the movable block 22. A tension spring 21 is movably sleeved on the outside of the guide rod 20, with one end fixed to the movable block 22 and the other end fixed to the inner wall of the mounting cavity 16 near the guide ring 17. An electromagnet 23 is fixed to the inner surface of the mounting cavity 16 on the side away from the guide ring 17.

[0027] Preferably, the scraper 19 is made of wear-resistant rubber or polyurethane to enhance the scraping effect and reduce wear on the can wall.

[0028] The drive motor 6 is connected to the worm gear 24 via a coupling, and one end of the worm gear 24 is fixed to the output shaft of the drive motor 6 via the coupling. The worm gear 24 is rotatably connected to the transmission box 5, and the drive shaft 8 is rotatably connected to the transmission box 5 and the mixing tank 1 via sealed bearings.

[0029] The worm gear 9 is fixed to the outer wall of the top of the drive shaft 8 and meshes with one side of the worm 24. Specifically, the lead angle of the worm 24 is less than or equal to its equivalent friction angle when meshing with the worm gear 9, which gives the worm gear drive a self-locking characteristic. When the drive motor 6 stops, it effectively prevents the drive shaft 8 from rotating in the opposite direction due to the weight or inertia of the material, thus ensuring the safety and stability of the stirring process.

[0030] Working principle: During operation, high borosilicate glass raw materials (such as quartz sand, boric acid, borax, etc.) are fed into the mixing tank 1 through the feed inlet. The drive motor 6 is started, and the output shaft of the drive motor 6 drives the worm gear 24 to rotate through the coupling. The worm gear 24 drives the worm wheel 9, which meshes with it, to rotate, thereby driving the drive shaft 8 and its stirring blades 10 and spiral blades 11 to rotate together.

[0031] Mixing and conveying process: The mixing blades 10 mainly perform radial and tangential mixing of the material in the upper part of the mixing tank 1, forming the main mixing flow field. At the same time, the spiral blades 11 extending into the discharge cone 2 generate an upward axial thrust when rotating, lifting the material deposited at the bottom and allowing it to re-enter the main mixing zone, effectively eliminating the accumulation of material at the bottom and the mixing dead zone, and improving the mixing uniformity and mixing efficiency.

[0032] Inner wall cleaning process: Non-cleaning state (scraper retraction): During normal mixing, the electromagnet 23 remains energized by supplying power to the conductive slip ring 7. The electromagnet 23 generates magnetic force, attracting the movable block 22 to move in its direction, stretching the tension spring 21. The movable block 22, via the guide rod 20, drives the scraper 19 to retract, disengaging it from contact with the inner wall of the mixing tank 1 and the discharge cone 2. This state avoids unnecessary friction and wear between the scraper 19 and the tank wall when cleaning is not required, reducing operating resistance and energy consumption.

[0033] Cleaning state (scraper extended): When mixing is complete and discharge is required, or when material adheres to the tank wall after a period of operation, the power supply to the electromagnet 23 is cut off. The electromagnet 23 loses its magnetism, and the attraction to the movable block 22 disappears. At this time, the stretched tension spring 21 releases its elastic potential energy, pushing the movable block 22 to move towards the guide ring 17. The movable block 22 pushes the scraper 19 to extend through the guide rod 20 until the scraper 19 is tightly attached to the inner wall of the mixing tank 1 and the discharge cone 2. As the drive shaft 8 continues to rotate, the scraper 19 can completely scrape off the material adhering to the inner wall, and the scraped material is discharged from the discharge port 3 along with the main material flow.

[0034] Advantages: 1. The telescopic inner wall cleaning structure controlled by an electromagnet enables on-demand cleaning with a high degree of intelligence. It effectively solves the problem of high borosilicate glass powder easily adhering to the tank wall, ensuring the accuracy of the mixing ratio and the uniformity of the product.

[0035] 2. The spiral blades extend to the discharge cone, enhancing the circulation of materials at the bottom and eliminating blind spots in the mixing process.

[0036] 3. The use of a worm gear drive with self-locking function improves the safety of equipment operation.

[0037] 4. The conductive slip ring and internal wiring design ensure reliable power supply to the electrical components on the rotating parts.

[0038] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A batching and mixing device for high borosilicate glass raw materials, comprising a mixing tank (1), wherein a feeding cone (2) is fixedly installed on the lower outer surface of the mixing tank (1), a support (4) is installed on the lower part of the mixing tank (1), a feeding port (3) is provided on the lower part of the feeding cone (2), and a feeding port is provided on one side of the upper end of the mixing tank (1), characterized in that: A transmission box (5) is fixedly installed in the middle of the upper outer surface of the mixing tank (1). A drive motor (6) is fixedly installed on one side of the outer surface of the transmission box (5). A worm gear (9) and a worm (24) are provided inside the transmission box (5). A drive shaft (8) is provided in the middle of the inner cavity of the mixing tank (1). The top of the drive shaft (8) extends into the interior of the transmission box (5). A stirring blade (10) and a spiral blade (11) are fixedly installed on the outer wall of the drive shaft (8). The lower end of the drive shaft (8) extends into the interior of the discharge cone (2). The spiral blade (11) at the bottom of the drive shaft (8) extends into the interior of the discharge cone (2). Upper support arms (12) are fixedly installed on the upper part of the outer surfaces on both sides of the drive shaft (8). A lower support arm (13) is fixedly installed on the lower part of the outer surface on both sides of the shaft (8). An inner wall cleaning structure (14) is fixedly installed between the upper support arm (12) and the lower support arm (13). The inner wall cleaning structure (14) includes a mounting plate (15), a mounting cavity (16), a guide ring (17), an annular sealing lip (18), a scraper (19), a guide rod (20), a tension spring (21), a movable block (22), and an electromagnet (23). The mounting plate (15) is fixed between the upper support arm (12) and the lower support arm (13). Wiring channels are provided inside the mounting plate (15), the upper support arm (12), the lower support arm (13), and the drive shaft (8). A conductive slip ring (7) is provided on the top of the drive shaft (8).

2. The batching and stirring device for high borosilicate glass raw materials according to claim 1, characterized in that: A coupling is provided between the worm (24) and the drive motor (6). One end of the outer surface of the worm (24) is fixedly connected to one end of the outer surface of the output shaft of the drive motor (6) through the coupling. A sealed bearing is provided between the worm (24) and the transmission box (5). The worm (24) is rotatably connected to the transmission box (5) through the sealed bearing.

3. The batching and stirring device for high borosilicate glass raw materials according to claim 2, characterized in that: The worm wheel (9) is fixed on the outer wall of the top of the drive shaft (8). The worm wheel (9) is located on one side of the outer surface of the worm (24). One side of the worm (24) meshes with one side of the worm wheel (9). The lead angle of the worm (24) is less than or equal to the equivalent friction angle when it meshes with the worm wheel (9).

4. The batching and stirring device for high borosilicate glass raw materials according to claim 3, characterized in that: Sealed bearings are provided between the drive shaft (8) and the transmission box (5) and the mixing tank (1). The drive shaft (8) is rotatably connected to the transmission box (5) and the mixing tank (1) through the sealed bearings.

5. The batching and stirring device for high borosilicate glass raw materials according to claim 4, characterized in that: The mounting cavity (16) is opened inside the mounting plate (15). The guide rings (17) are fixed at equal intervals on the side of the mounting plate (15) near the inner wall of the mixing tank (1). The inner cavity of the guide rings (17) is connected to the mounting cavity (16). The annular sealing lip (18) is fixed at equal intervals on the inner wall of the guide rings (17). The guide rods (20) are fixed at equal intervals on the inner wall of the scraper (19) away from the mixing tank (1). The movable block (22) is located in the mounting cavity (16). The end of the guide rod (20) away from the scraper (19) is fixedly connected to one side of the movable block (22). The tension spring (21) is movably sleeved on the outside of the guide rod (20). The tension spring (21) is fixed between one side of the outer surface of the movable block (22) and the side of the mounting cavity (16) near the guide ring (17). The electromagnet (23) is fixed on the outer surface of the mounting cavity (16) away from the guide ring (17).

6. The batching and stirring device for high borosilicate glass raw materials according to claim 5, characterized in that: The scraper (19) is made of wear-resistant rubber or polyurethane.

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