Quartz crucible raw material particle size adjusting device

Abstract

This utility model relates to the technical field of quartz crucible manufacturing equipment, specifically to a quartz crucible raw material particle size adjustment device, including a screening cylinder. A conical hopper is located at the bottom of the screening cylinder, and a vertical pipe is fixedly installed at the bottom end of the conical hopper. A crossbeam plate is also located at the bottom of the screening cylinder. The screening cylinder and the crossbeam plate are supported by multiple springs. Two symmetrical mesh screens are fixedly installed on the inner wall of the screening cylinder. A discharge pipe extending to the end of the mesh screen is fixedly installed on the side of the screening cylinder. A vibrating motor is fixedly installed on the side of the screening cylinder. A holding cylinder is located at the bottom end of both the vertical pipe and the discharge pipe, and a screw feeder is fixedly installed at the bottom discharge end of the holding cylinder. This utility model facilitates screening, material storage, and conveying operations, saves manpower, and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of quartz crucible manufacturing equipment, and more specifically, to a quartz crucible raw material particle size adjustment device. Background Technology

[0002] As the core container for semiconductor silicon wafer pulling and photovoltaic single crystal growth, the particle size distribution of the raw material (high-purity quartz sand) of the quartz crucible directly determines the crucible's density, high-temperature resistance, and thermal shock resistance. If the particle size is too coarse, voids will easily exist after the crucible is formed, making it prone to cracking at high temperatures; if the particle size is too fine, it will increase the difficulty of forming and uneven shrinkage will easily occur during sintering, affecting the dimensional accuracy of the crucible. Before the production of quartz crucibles, the particle size of the quartz sand raw material needs to be precisely adjusted. The raw material is screened into different particle size grades (such as coarse, medium, and fine particles) and then mixed in a specific ratio to ensure the stable quality of the crucible products.

[0003] The quartz crucible raw material particle size adjustment device is the core equipment for achieving precise quartz sand classification. It separates raw materials of different particle sizes through a screening structure. Traditional equipment mostly uses a single-layer screen for screening, which can only separate raw materials into two grades: "oversize" and "undersize," and cannot achieve the multi-particle size classification (such as coarse, medium, and fine) required for quartz crucible raw materials. In addition, the discharge end of traditional screening equipment is usually directly exposed, and the raw materials of different particle sizes after screening need to be manually transferred to the next process. This not only increases labor costs but also easily introduces impurities during the transfer process, contaminating the high-purity quartz sand raw material. In view of this, we have proposed the quartz crucible raw material particle size adjustment device. Utility Model Content

[0004] The purpose of this invention is to provide a quartz crucible raw material particle size adjustment device to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quartz crucible raw material particle size adjustment device includes a screening cylinder. A conical hopper is located at the bottom of the screening cylinder, and a vertical pipe is fixedly installed at the bottom end of the conical hopper. A crossbeam plate is also located at the bottom of the screening cylinder. The screening cylinder and the crossbeam plate are supported by multiple springs. Two symmetrical mesh screens are fixedly installed on the inner wall of the screening cylinder. A discharge pipe extending to the end of the mesh screen is fixedly installed on the side of the screening cylinder. A vibrating motor is fixedly installed on the side of the screening cylinder. A holding cylinder is located at the bottom end of both the vertical pipe and the discharge pipe, and a screw feeder is fixedly installed at the bottom discharge end of the holding cylinder.

[0007] Preferably, a feed hopper is fixedly installed at the top center of the screening cylinder, and the plane of the inner wall of the feed hopper is inclined downward at 45 degrees to 60 degrees.

[0008] This setting facilitates the feeding operation.

[0009] Preferably, a plurality of side plates are fixedly installed on the side of the screening cylinder, and the spring is fixedly installed between the side plates and the crossbeam plate;

[0010] Preferably, a vertically arranged guide rod is fixedly installed on the bottom surface of the side plate, and the guide rod passes through the crossbeam plate and is slidably connected to the crossbeam plate;

[0011] The above two settings serve to guide the vibration of the screening cylinder and prevent it from swaying left and right.

[0012] Preferably, the conical hopper extends downward through the crossbeam plate, and the aperture of the upper mesh screen is larger than that of the lower mesh screen;

[0013] This setting enables sequential screening operations.

[0014] Preferably, a top cover is detachably installed at the top of the container, and a feed sleeve communicating with the inside of the container is fixedly installed on the top cover. The vertical pipe and the discharge pipe are both inserted into the corresponding feed sleeve.

[0015] This setting facilitates normal unloading without affecting the vertical vibration of the container.

[0016] Preferably, the bottom end of the container is funnel-shaped, and the bottom outlet end of the container is connected to the feed end of the screw feeder.

[0017] Preferably, an exhaust pipe connected to the inside of the container is fixedly installed on the top cover, and a rubber sleeve is fitted on the top of the exhaust pipe, with a breathable baffle net provided at the center of the rubber sleeve.

[0018] This feature allows for venting of the contents of the container while preventing powdery materials from flying outwards.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model uses a grading structure with two mesh screens of different aperture sizes, a conical hopper, and a vertical pipe. The upper mesh screen screens coarse particles and discharges them through the discharge pipe, while the lower mesh screen screens medium particles and discharges them through the discharge pipe. Fine particles fall into the conical hopper and are discharged through the vertical pipe. This replaces the limitation of traditional single-layer screens that can only separate two grades, achieving precise three-level grading of quartz sand (coarse, medium, and fine). It meets the multi-particle size grading requirements of quartz crucible raw materials, improves the grading accuracy of raw materials, and reduces the cost of secondary screening.

[0021] 2. This utility model adopts an automated collection and conveying structure using a container and a screw feeder. The vertical pipe and the discharge pipe respectively discharge raw materials of different particle sizes into the corresponding container. The screw feeder at the bottom of the container directly conveys the raw materials to the next process without manual transfer, thus avoiding the introduction of impurities and contamination of high-purity quartz sand during the transfer process.

[0022] 3. This utility model uses spring support between the screening cylinder and the crossbeam plate, and the guide rod of the side plate slides along the crossbeam plate to prevent the screening cylinder from swaying left and right when vibrating, thus ensuring the uniformity of the mesh screen. The exhaust pipe of the top cover of the container cylinder and the rubber sleeve with a breathable baffle can not only discharge the gas inside the cylinder, but also prevent powdery raw materials from flying. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0025] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Screening cylinder; 10. Conical hopper; 11. Vertical pipe; 12. Feed hopper; 13. Vibrating motor; 14. Mesh screen; 15. Discharge pipe; 16. Crossbeam plate; 17. Side plate; 171. Guide rod; 18. Spring;

[0029] 2. Container cylinder; 20. Screw feeder; 21. Top cover; 22. Feed sleeve; 23. Exhaust pipe; 24. Rubber sleeve; 241. Ventilation baffle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Please see Figures 1-4 This utility model provides a technical solution: a quartz crucible raw material particle size adjustment device, including a screening cylinder 1, a conical hopper 10 at the bottom of the screening cylinder 1, a vertical pipe 11 fixedly installed at the bottom end of the conical hopper 10, a crossbeam plate 16 at the bottom of the screening cylinder 1, and multiple springs 18 supporting the screening cylinder 1 and the crossbeam plate 16. Two symmetrical mesh screens 14 are fixedly installed on the inner wall of the screening cylinder 1. The aperture of the upper mesh screen 14 is larger than that of the lower mesh screen 14. Quartz sand raw material is screened by the upper screen for coarse particles, the lower screen for medium particles, and fine particles fall into the conical hopper 10, realizing three-stage screening of coarse, medium, and fine particles in sequence, replacing the limitation of traditional single-layer screens that only separate two stages, meeting the multi-particle size classification requirements of quartz crucible raw materials, and improving classification accuracy.

[0033] In this embodiment, a discharge pipe 15 extending to the end of the mesh screen 14 is fixedly installed on the side of the screening cylinder 1. A vibration motor 13 is fixedly installed on the side of the screening cylinder 1. Multiple side plates 17 are fixedly installed on the side of the screening cylinder 1. A spring 18 is fixedly installed between the side plate 17 and the crossbeam plate 16. A vertically arranged guide rod 171 is fixedly installed on the bottom surface of the side plate 17. The guide rod 171 passes through the crossbeam plate 16 and is slidably connected to the crossbeam plate 16 to prevent the screening cylinder 1 from swaying left and right, ensure that the mesh screen 14 screens evenly, and reduce the situation of raw materials agglomerating and clogging the screen.

[0034] Specifically, both the vertical pipe 11 and the discharge pipe 15 are equipped with a holding cylinder 2 at their bottom ends. A screw feeder 20 is fixedly installed at the bottom discharge end of the holding cylinder 2 to hold the screened raw materials. At the same time, the screw feeder 20 can also convey the materials.

[0035] like Figure 1 and Figure 2 As shown, a feed hopper 12 is fixedly installed at the top center of the screening cylinder 1. The inner wall of the feed hopper 12 is inclined downward at 45 to 60 degrees, so that the quartz sand raw material can slide smoothly into the screening cylinder 1, avoid accumulation at the feed inlet, facilitate efficient feeding, improve raw material processing efficiency, and meet the needs of large-scale production.

[0036] like Figure 2 As shown, the conical bucket 10 extends downward through the crossbeam plate 16. The crossbeam plate 16 has a pre-drilled through hole for the conical bucket 10 to pass through, so that the crossbeam plate 16 will not interfere with the normal vibration screening of the screening cylinder 1.

[0037] In this embodiment, a top cover 21 is detachably installed at the top of the container 2. A feed sleeve 22 that communicates with the inside of the container 2 is fixedly installed on the top cover 21. The vertical pipe 11 and the discharge pipe 15 are both inserted into the corresponding feed sleeve 22, which facilitates normal unloading and does not affect the vibration of the container 2 in the vertical direction.

[0038] Specifically, the bottom of the container cylinder 2 is funnel-shaped, and the bottom discharge end of the container cylinder 2 is connected to the feed end of the screw feeder 20. Without manual transfer, the graded raw materials are directly transported to the next process, reducing labor costs.

[0039] Furthermore, an exhaust pipe 23 connected to the inside of the container cylinder 2 is fixedly installed on the top cover 21. A rubber sleeve 24 is fitted on the top of the exhaust pipe 23. A breathable baffle 241 is set at the center of the rubber sleeve 24. The exhaust pipe 23 discharges the gas inside the cylinder, and the breathable baffle 241 of the rubber sleeve 24 prevents powder from flying. This avoids the excessive air pressure inside the container cylinder 2 from affecting the unloading and also prevents the high-purity quartz sand raw material from flying outward.

[0040] Finally, it should be noted that the screw feeder 20, vibrating motor 13, corresponding control system, and external power supply of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0041] When using the quartz crucible raw material particle size adjustment device of this utility model, the quartz sand raw material is poured into the feed hopper 12 at the top of the screening cylinder 1, and the raw material slides smoothly into the screening cylinder 1; the vibration motor 13 on the side of the screening cylinder 1 is started to generate vibration for screening the raw material. The raw material is screened through the large-diameter mesh screen 14 above to separate coarse particles. The coarse particles are discharged from the discharge pipe 15 into the corresponding container cylinder 2. The remaining raw material falls to the small-diameter mesh screen 14 below. The medium particles are discharged from another discharge pipe 15, and the fine particles fall into the conical hopper 10 and are discharged into the container cylinder 2 through the vertical pipe 11.

[0042] Gas inside the container 2 is discharged through the exhaust pipe 23. The breathable baffle 241 of the rubber sleeve 24 prevents powder from flying. The screw feeder 20 is started, and raw materials of different particle sizes in the container 2 are transported to the next process through the screw feeder 20. After screening, the vibrating motor 13 and the screw feeder 20 are turned off.

[0043] 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 preferred examples and are not intended to limit the 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quartz crucible raw material particle size adjustment device, comprising a sieving cylinder (1), characterized in that: The bottom of the screening cylinder (1) is provided with a conical hopper (10), and a vertical pipe (11) is fixedly installed at the bottom end of the conical hopper (10). A crossbeam plate (16) is also provided at the bottom of the screening cylinder (1). The screening cylinder (1) and the crossbeam plate (16) are supported by multiple springs (18). Two symmetrical mesh screens (14) are fixedly installed on the inner wall of the screening cylinder (1). A discharge pipe (15) extending to the end of the mesh screen (14) is fixedly installed on the side of the screening cylinder (1). A vibration motor (13) is fixedly installed on the side of the screening cylinder (1). A container (2) is provided at the bottom end of both the vertical pipe (11) and the discharge pipe (15). A screw feeder (20) is fixedly installed at the bottom discharge end of the container (2).

2. The quartz crucible raw material particle size adjustment device according to claim 1, characterized in that: A feed hopper (12) is fixedly installed at the top center of the screening cylinder (1), and the inner wall of the feed hopper (12) is inclined downward at 45 degrees to 60 degrees.

3. The quartz crucible raw material particle size adjustment device according to claim 1, characterized in that: Multiple side plates (17) are fixedly installed on the side of the screening cylinder (1), and the spring (18) is fixedly installed between the side plate (17) and the crossbeam plate (16).

4. The quartz crucible raw material particle size adjustment device according to claim 3, characterized in that: A guide rod (171) is fixedly installed on the bottom surface of the side plate (17) in a vertical position. The guide rod (171) passes through the crossbeam plate (16) and is slidably connected to the crossbeam plate (16).

5. The quartz crucible raw material particle size adjustment device according to claim 1, characterized in that: The conical bucket (10) extends downward through the crossbeam plate (16), and the aperture of the upper mesh screen (14) is larger than that of the lower mesh screen (14).

6. The quartz crucible raw material particle size adjustment device according to claim 1, characterized in that: A top cover (21) is detachably installed at the top of the container (2). A feed sleeve (22) connected to the inside of the container (2) is fixedly installed on the top cover (21). The vertical pipe (11) and the discharge pipe (15) are both inserted into the corresponding feed sleeve (22).

7. The quartz crucible raw material particle size adjustment device according to claim 1, characterized in that: The bottom of the container (2) is funnel-shaped, and the bottom discharge end of the container (2) is connected to the feed end of the screw feeder (20).

8. The quartz crucible raw material particle size adjustment device according to claim 6, characterized in that: An exhaust pipe (23) connected to the inside of the container (2) is fixedly installed on the top cover (21). A rubber sleeve (24) is fitted on the top of the exhaust pipe (23), and a breathable baffle (241) is provided at the center of the rubber sleeve (24).

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