A crystal extraction device

Abstract

This utility model relates to the field of crystal extraction equipment technology, and provides a crystal extraction device, which includes a crystal extraction cart and a protective cylinder disposed on the cart. The protective cylinder has an internal accommodating space. When the protective cylinder is open, an opening is formed on the cylinder, through which a polycrystalline ingot enters the accommodating space, or the polycrystalline ingot contained in the accommodating space is removed from the accommodating space through the opening. When the protective cylinder is closed, the opening is sealed, isolating the accommodating space from the external space. Because the protective cylinder can switch between open and closed states, the polycrystalline ingot is completely contained within the sealed accommodating space during the crystal extraction process, blocking the path of high-temperature fragments. This solves the safety hazard problem caused by insufficient protection in existing crystal extraction devices, and has the advantages of effectively preventing high-temperature fragments from splashing and improving operational safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of crystal extraction equipment, and in particular relates to a crystal extraction device. Background Technology

[0002] In monocrystalline silicon production workshops, crystal-retrieving trolleys are commonly used to transport polycrystalline ingots. However, existing crystal-retrieving trolleys have significant design flaws. Due to the disordered arrangement of atoms within the polycrystalline ingots, they are highly susceptible to cracking during the retrieving process. Especially at high temperatures (several hundred degrees Celsius), cracked polycrystalline ingots can scatter hot fragments, potentially cutting or burning operators. Furthermore, cracked polycrystalline ingots may fall to the ground, damaging ground equipment or facilities, or even injuring the feet of operators, posing a serious safety hazard.

[0003] Most crystal extraction carts on the market today feature a four-sided open design, lacking effective protective measures and unable to block high-temperature fragments from flying debris during an explosion. While this design facilitates operation, it fails to meet safety requirements. Particularly at the extraction hole, the lack of a protective structure makes the polycrystalline rod more susceptible to accidents during removal and placement. Existing protective structures are either too simple to provide effective protection or too complex, affecting operational efficiency. Furthermore, existing crystal extraction carts lack stability during movement, making them prone to displacement or falling of the polycrystalline rod due to vibration. Utility Model Content

[0004] The crystal extraction device provided in this embodiment of the present invention aims to solve the technical problem that existing crystal extraction devices are prone to safety hazards during the crystal extraction process.

[0005] This utility model is implemented as follows: a crystal extraction device includes:

[0006] Crystal extraction vehicle;

[0007] The protective cylinder installed on the crystal removal vehicle has an internal accommodating space. When the protective cylinder is open, an opening is formed on the protective cylinder, through which the polycrystalline rod enters the accommodating space, or the polycrystalline rod contained in the accommodating space is taken out of the accommodating space through the opening.

[0008] When the protective cylinder is closed, the opening is sealed, and the accommodating space is isolated from the external space.

[0009] Furthermore, the protective cylinder is disposed at the rod-taking hole of the crystal-taking vehicle, and the axis of the protective cylinder is collinear with the axis of the rod-taking hole.

[0010] Furthermore, the protective cylinder is arranged along the length direction of the crystal-retrieving vehicle, and along the length direction of the crystal-retrieving vehicle, the protective cylinder adopts a split structure.

[0011] Furthermore, the protective cylinder includes a hollow first half-cylinder and a hollow second half-cylinder, the first half-cylinder and the second half-cylinder together defining the accommodating space;

[0012] The first half-cylinder and the second half-cylinder are provided with a rotating connector at the connecting end. The first half-cylinder and the second half-cylinder rotate relative to the rotating connector so that the protective cylinder moves between an open state and a closed state.

[0013] Furthermore, the free ends of the first and second half-cylinders are provided with detachable locking structures;

[0014] The detachable locking structure is used to lock the first half-cylinder and the second half-cylinder to keep the protective cylinder in a closed position, or to release the lock between the first half-cylinder and the second half-cylinder.

[0015] Furthermore, the rotatable connector includes a hinge, through which the first half-cylinder and the second half-cylinder are rotatably connected;

[0016] The detachable locking structure includes a lug and a locking bolt adapted to the lug. The first half-cylinder and the second half-cylinder are locked and unlocked through the lug and the locking bolt.

[0017] Furthermore, the crystal-retrieving vehicle is equipped with a reinforcing belt, one side of which is fixedly connected to the crystal-retrieving vehicle, and the other side of which is detachably connected to the crystal-retrieving vehicle. The reinforcing belt is used to reinforce or release the protective cylinder.

[0018] When the reinforcing strip reinforces the protective cylinder, the reinforcing strip is attached to the upper half of the protective cylinder, and the other side of the reinforcing strip is fixedly connected to the crystal removal vehicle.

[0019] When the reinforcing strip releases the protective cylinder, the other side of the reinforcing strip detaches from the crystal extraction vehicle.

[0020] Furthermore, the inner wall of the protective cylinder is provided with a high-temperature resistant buffer layer.

[0021] Furthermore, the protective cylinder is made of polytetrafluoroethylene or stainless steel, and a heat dissipation structure is provided on the outer side of the protective cylinder.

[0022] Furthermore, the crystal-retrieving vehicle also includes four omnidirectional wheels, which are located at the bottom of the vehicle and at the four corners of the bottom, and each omnidirectional wheel is equipped with a braking structure.

[0023] The beneficial effects achieved by this utility model are that, since the protective cylinder can switch between open and closed states, the polycrystalline rod is completely contained in a sealed container during the crystal extraction process, blocking the path of high-temperature fragments splashing. This solves the safety hazard problem caused by insufficient protection in existing crystal extraction devices, and has the advantages of effectively preventing high-temperature fragments from splashing and improving operational safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the crystal extraction device provided in this embodiment of the utility model;

[0025] Figure 2 This is a plan view of the crystal extraction device provided in an embodiment of the present invention;

[0026] Figure 3 This is a plan view of the protective cylinder provided in an embodiment of the present utility model;

[0027] Figure 4 This is another planar schematic diagram of the protective cylinder provided in this embodiment of the utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] In existing technologies, crystal extraction carts are mostly designed with four-sided openwork, lacking effective protective measures and unable to block high-temperature fragments from flying during an explosion. While this design facilitates operation, it fails to meet safety requirements. Particularly at the extraction hole, the lack of a protective structure makes the polycrystalline rod more susceptible to accidents during extraction and placement. Existing protective structures are either too simple to provide effective protection or too complex, affecting operational efficiency. Furthermore, existing crystal extraction carts lack stability during movement, easily causing the polycrystalline rod to shift or fall due to vibration. This application addresses this issue by allowing the protective cylinder to switch between open and closed states, thus completely containing the polycrystalline rod within a sealed enclosure during extraction, blocking the path of high-temperature fragments. This solves the safety hazard caused by insufficient protection in existing crystal extraction devices, effectively preventing high-temperature fragment splashes and improving operational safety.

[0030] Example 1

[0031] Please see Figures 1 to 4 A crystal extraction device 100, comprising:

[0032] Crystal extraction vehicle 10;

[0033] The protective cylinder 20 installed on the crystal removal vehicle 10 has an internal accommodating space 203. When the protective cylinder 20 is opened, an opening 204 is formed on the protective cylinder 20. The polycrystalline rod enters the accommodating space 203 through the opening 204, or the polycrystalline rod contained in the accommodating space 203 is taken out of the accommodating space 203 through the opening 204.

[0034] With the protective cylinder 20 closed, the opening 204 is sealed, and the accommodating space 203 is isolated from the external space.

[0035] Furthermore, the crystal-retrieving cart 10 refers to the basic transport equipment used to carry and move polycrystalline rods, specifically implemented using a structure with casters. In this application, universal casters 60 with braking function are provided at the bottom of the crystal-retrieving cart 10. The protective cylinder 20 refers to the cylindrical structure surrounding the rod-retrieving area of ​​the crystal-retrieving cart 10, specifically implemented using a split cylindrical structure, for example, composed of a first half-cylinder 201 and a second half-cylinder 202 combined by a rotating connector 30. The accommodating space 203 refers to the enclosed area formed inside the protective cylinder 20, specifically implemented by adjusting the cylinder diameter and length, for example, designed as a cylindrical cavity according to the size of the polycrystalline rod. The open state means that the protective cylinder 20 forms a channel for the polycrystalline rod to enter and exit. The closed state means that the protective cylinder 20 is completely closed.

[0036] Specifically, when it is necessary to load or unload the polycrystalline rod, the operator switches the protective cylinder 20 to the open state, at which point an opening 204 is formed, through which the polycrystalline rod enters the receiving space 203. After loading is completed, the protective cylinder 20 is switched to the closed state. In this state, the inner wall of the cylinder completely surrounds the polycrystalline rod, forming a physical isolation barrier. In the event of an explosion, the flying fragments are confined within the receiving space 203 and cannot penetrate the cylinder wall to spread outwards.

[0037] In this embodiment, because the protective cylinder 20 forms a complete isolation barrier when closed, it prevents high-temperature fragments from contacting operators or equipment, thus avoiding burns and mechanical damage. At the same time, the protective cylinder 20 can still maintain normal loading and unloading functions when open, balancing safety and operational efficiency. Its structure is simple and easy to implement.

[0038] Example 2

[0039] Furthermore, the protective cylinder 20 is positioned at the rod-taking hole of the crystal-taking vehicle 10, and the axis of the protective cylinder 20 is collinear with the axis of the rod-taking hole.

[0040] The "bar-picking hole" refers to the through-hole structure on the bar-picking cart 10 for the polycrystalline bar to pass through. Specifically, it can be implemented using a circular hole structure, with a diameter slightly larger than the diameter of the polycrystalline bar. "Collinear axes" means that the central axis of the protective cylinder 20 coincides with the central axis of the bar-picking hole. This can be achieved through laser calibration or a mechanical positioning device, ensuring that the polycrystalline bar maintains a straight-line trajectory during the picking and placing process.

[0041] Furthermore, the protective cylinder 20 is fitted into the pre-set rod-retrieving hole position on the top of the crystal-retrieving cart 10, and the two are fixed by a flange or bolts. When the crystal-retrieving cart 10 moves to the bottom of the polycrystalline rod, the axis of the protective cylinder 20 is aligned with the axis of the rod-retrieving hole, so that the polycrystalline rod can directly enter the receiving space 203 of the protective cylinder 20 along a straight path.

[0042] In this embodiment, the collinear design of the axes ensures that the polycrystalline rod maintains a vertical falling trajectory even at high temperatures, preventing secondary collisions and breakage caused by path deviation, effectively reducing the risk of high-temperature fragments flying, and improving the stability of the polycrystalline rod transfer process. The collinear design of the axis of the protective cylinder 20 and the axis of the rod-retrieving hole also simplifies the operation process and makes it more convenient for users.

[0043] Example 3

[0044] Please see Figure 1 and Figure 2 Furthermore, the protective cylinder 20 is arranged along the length of the crystal-removing cart 10, and the protective cylinder 20 adopts a split structure along the length of the crystal-removing cart 10.

[0045] With this configuration, when the crystal removal cart 10 moves to the polycrystalline ingot processing position, the opening 204 end of the protective cylinder 20 can be directly aligned with the polycrystalline ingot growth device, allowing the polycrystalline ingot to enter the receiving space 203 along a straight path. The split structure increases the area of ​​the opening 204, which is beneficial for the polycrystalline ingot to enter the receiving space 203.

[0046] Example 4

[0047] Please see Figure 3 and Figure 4 Furthermore, the protective cylinder 20 includes a hollow first half-cylinder 201 and a hollow second half-cylinder 202, with the first half-cylinder 201 and the second half-cylinder 202 jointly defining the accommodating space 203;

[0048] A rotating connector 30 is provided at the connection end of the first half-cylinder 201 and the second half-cylinder 202. The first half-cylinder 201 and the second half-cylinder 202 rotate relative to the rotating connector 30 so that the protective cylinder 20 moves between the open state and the closed state.

[0049] The rotating connector 30 is a mechanical structure that enables the first half-cylinder 201 and the second half-cylinder 202 to rotate relative to each other, allowing them to rotate around an axis to achieve opening and closing. The split structure refers to a cylindrical device composed of two symmetrical arc-shaped shells, which can be manufactured using a split casting process, forming an openable and closable cylindrical structure through the rotating connector 30.

[0050] Specifically, the protective cylinder 20 consists of two independent hollow half-cylinders, forming a rotatable structure via a rotating connector 30 at the connecting end. When the polycrystalline rod needs to be contained, the first half-cylinder 201 and the second half-cylinder 202 are in a closed state, forming a complete cylindrical protective space; when the polycrystalline rod needs to be retrieved, the first half-cylinder 201 and the second half-cylinder 202 rotate and unfold around the axis of the rotating connector 30 to form an opening 204. This structure achieves the opening and closing control of the protective space through mechanical rotation, ensuring both the airtight protection of the high-temperature polycrystalline rod and facilitating access for operators.

[0051] Example 5

[0052] Please continue reading. Figure 3 and Figure 4 Furthermore, the free ends of the first half-cylinder 201 and the second half-cylinder 202 are provided with a detachable locking structure 40;

[0053] The detachable locking structure 40 is used to lock the first half-cylinder 201 and the second half-cylinder 202 so that the protective cylinder 20 is kept in a closed tendency, or to release the lock between the first half-cylinder 201 and the second half-cylinder 202 so that the first half-cylinder 201 and the second half-cylinder 202 can rotate to enter the open state.

[0054] The detachable locking structure 40 refers to a device that reversibly fixes two components through a mechanical connection, creating a rigid constraint in a closed state. The free end refers to the end of the cylinder not connected to the rotating connector 30, specifically the longitudinally extending end of the protective cylinder 20. A locking structure at this location creates an effective closed constraint. The fixed connection tendency refers to a relatively static mechanical state between the components, achieved by applying preload through locking bolts. This state prevents accidental opening of the cylinder due to external impact.

[0055] In this embodiment, a rigid connection is formed by the detachable locking structure 40, which enhances structural stability while maintaining ease of operation. When the polycrystalline rod explodes, the locking structure can maintain the structural integrity of the protective cylinder 20, completely confining the hazardous material within the containment space 203, and preventing operators from coming into contact with high-temperature fragments or suffering impact injuries.

[0056] Example 6

[0057] Furthermore, including the hinge, the first half-tube 201 and the second half-tube 202 are rotatably connected by the hinge;

[0058] The detachable locking structure 40 includes a lug and a locking bolt adapted to the lug. The first half-cylinder 201 and the second half-cylinder 202 are locked and unlocked through the lug and the locking bolt.

[0059] Specifically, a hinge is a metal connector with a pivot, typically made of stainless steel. It enables the rotational opening and closing of the first half-cylinder 201 and the second half-cylinder 202 via a hinge structure, thereby switching the protective cylinder 20 between a closed and open state. A lug is a sheet-like extension welded or riveted to the edge of the half-cylinder. A locking bolt is a threaded fastener that mechanically locks the first half-cylinder 201 and the second half-cylinder 202 by screwing it into the threaded hole of the lug. This creates a rigid connection in the closed state, preventing accidental opening of the protective cylinder 20 due to external impact.

[0060] Furthermore, when it is necessary to receive or remove the polycrystalline rod, the operator can loosen the locking bolt to release the lugs from constraint. At this time, the first half-cylinder 201 and the second half-cylinder 202 can rotate outward around the hinge's rotation axis to form an opening 204. After the operation is completed, the first half-cylinder 201 and the second half-cylinder 202 are closed and aligned with the lugs, and a preload is applied by the locking bolt to achieve a sealed fixation. The rotation axis of the hinge is parallel to the axis of the protective cylinder 20, ensuring accurate alignment of the accommodating space 203 during opening and closing.

[0061] In one embodiment, the lug can be provided on the first half-cylinder 201 and the locking bolt can be provided on the second half-cylinder 202; in another embodiment, the locking bolt can be provided on the first half-cylinder 201 and the lug can be provided on the second half-cylinder 202.

[0062] In other embodiments, the rotatable connector 30 can also be implemented using other structures, and the detachable locking structure 40 can also be implemented using other structures. The specific design can be based on the actual situation and is not limited here.

[0063] Example 7

[0064] Please see Figure 1 and Figure 2 Furthermore, the crystal-removing cart 10 is provided with a reinforcing belt 50, one side of which is fixedly connected to the crystal-removing cart 10, and the other side of which is detachably connected to the crystal-removing cart 10. The reinforcing belt 50 is used to reinforce or release the protective cylinder 20.

[0065] When the reinforcing strip 50 reinforces the protective cylinder 20, the reinforcing strip 50 is attached to the upper half of the protective cylinder 20, and the other side of the reinforcing strip 50 is fixedly connected to the crystal removal vehicle 10.

[0066] When the reinforcing belt 50 releases the protective cylinder 20, the other side of the reinforcing belt 50 detaches from the crystal removal vehicle 10.

[0067] In this embodiment, the reinforcing strip 50 refers to a strip structure with ductility and tensile strength, which can be implemented by metal woven strip or polymer composite material strip, forming a ring-shaped constraint on the protective cylinder 20 through the strip structure.

[0068] It should be noted that the reinforced protective cylinder 20 refers to the working mode in which the reinforcing strip 50 forms a rigid contact with the protective cylinder 20. This can be achieved through a locking mechanism, a pin, or a magnetic adsorption mechanism. In this mode, the reinforcing strip 50 and the surface of the protective cylinder 20 form a surface contact, suppressing the deformation of the protective cylinder 20 when subjected to external impact. Releasing the protective cylinder 20 refers to the operating mode in which the reinforcing strip 50 releases its constraint on the protective cylinder 20. This can be achieved through manual release of the locking mechanism or an automatic pop-out mechanism. In this mode, the protective cylinder 20 can switch states.

[0069] Specifically, when the protective cylinder 20 is closed, the operator connects the detachable end of the reinforcing strap 50 to the fixing seat on the side wall of the crystal-retrieving cart 10, so that the reinforcing strap 50 forms a closed loop constraint around the upper half of the protective cylinder 20. For example, the detachable end of the reinforcing strap 50 is equipped with a buckle that engages with the slot on the side wall of the crystal-retrieving cart 10 to achieve fixation through a snap-fit ​​method. When it is necessary to open the protective cylinder 20, the connection of the detachable end of the reinforcing strap 50 is released, allowing it to detach from the side wall of the crystal-retrieving cart 10. At this time, the protective cylinder 20 can switch states.

[0070] Example 8

[0071] Furthermore, the inner wall of the protective cylinder 20 is provided with a high-temperature resistant buffer layer.

[0072] In this embodiment, the high-temperature resistant buffer layer can be made of ceramic fiber composite material or aluminum silicate fiber felt. Its function is to absorb the impact energy generated when the polycrystalline rod explodes and to prevent high-temperature fragments from directly contacting the protective cylinder 20 body. In other embodiments, the protective cylinder 20 can also be made of other materials. The specific design can be made according to the actual situation and is not limited here.

[0073] Example 9

[0074] Furthermore, the protective cylinder 20 is made of polytetrafluoroethylene or stainless steel, and a heat dissipation structure is provided on the outside of the protective cylinder 20.

[0075] Specifically, the materials used to construct the protective cylinder 20 are polytetrafluoroethylene (PTFE) or stainless steel. These materials can be molded PTFE sheets or welded stainless steel sheets, providing high-temperature resistance and corrosion resistance to withstand the high-temperature environment of the polycrystalline ingot. The heat dissipation structure can be through holes located on the protective cylinder 20 to carry away hot air from inside the cylinder.

[0076] Example 10

[0077] Please see Figure 1 and Figure 2 Furthermore, the crystal-retrieving vehicle 10 also includes four universal wheels 60, which are located at the bottom of the crystal-retrieving vehicle 10 and at the four top corners of the bottom, and each universal wheel 60 is equipped with a brake structure 70.

[0078] In this embodiment, with the four casters 60 and the brake structure 70, when the crystal picking cart 10 needs to move, the casters 60 allow the operator to push it in any direction; when it needs to be fixed in position, the wheels are locked by pressing the brake structure 70 to prevent the crystal picking cart 10 from being displaced due to ground tilt or external force collision. The structure is simple and easy to implement.

[0079] Among them, the swivel wheel 60 and the brake structure 70 are conventional structures, and will not be described in detail here.

[0080] The beneficial effects achieved by this utility model are as follows: because the protective cylinder 20 can switch between open and closed states, the polycrystalline rod is completely contained within the sealed accommodating space 203 during the crystal extraction process, blocking the path of high-temperature fragments. This solves the safety hazard problem caused by insufficient protection in existing crystal extraction devices 100, effectively preventing high-temperature fragments from splashing and improving operational safety. The reinforcing band 50 provides reinforcement to the protective cylinder 20, preventing it from loosening during the movement of the crystal extraction cart 10. The high-temperature resistant buffer layer and heat dissipation structure dissipate heat from the polycrystalline rod. Through multiple layers of protection, the safety performance of the crystal extraction device 100 is further improved.

[0081] It is understood that those skilled in the art can combine various implementation methods in the above embodiments under the guidance of the above examples to obtain technical solutions with multiple implementation methods.

[0082] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crystal taking-out apparatus characterized by comprising: It includes: Crystal extraction vehicle; The protective cylinder installed on the crystal removal vehicle has an internal accommodating space. When the protective cylinder is open, an opening is formed on the protective cylinder, through which the polycrystalline rod enters the accommodating space, or through which the polycrystalline rod contained in the accommodating space is removed from the accommodating space. When the protective cylinder is closed, the opening is sealed, and the accommodating space is isolated from the external space.

2. The crystal taking apparatus according to claim 1, wherein The protective cylinder is disposed at the rod-retrieving hole of the crystal-retrieving vehicle, and the axis of the protective cylinder is collinear with the axis of the rod-retrieving hole.

3. The crystal taking apparatus according to claim 2, wherein The protective cylinder is arranged along the length of the crystal-retrieving vehicle, and the protective cylinder adopts a split structure along the length of the crystal-retrieving vehicle.

4. The crystal taking apparatus according to claim 1, wherein The protective cylinder includes a hollow first half-cylinder and a hollow second half-cylinder, which together define the accommodating space. The first half-cylinder and the second half-cylinder are provided with a rotating connector at the connecting end. The first half-cylinder and the second half-cylinder rotate relative to the rotating connector to open or close the protective cylinder.

5. The crystal taking apparatus according to claim 4, wherein The free ends of the first half-cylinder and the second half-cylinder are provided with detachable locking structures; The detachable locking structure is used to lock the first half-cylinder and the second half-cylinder to keep the protective cylinder in a closed position, or to release the lock between the first half-cylinder and the second half-cylinder.

6. The crystal extraction device as described in claim 5, characterized in that, The rotating connector includes a hinge, and the first half-cylinder and the second half-cylinder are rotatably connected by the hinge. The detachable locking structure includes a lug and a locking bolt adapted to the lug. The first half-cylinder and the second half-cylinder are locked and unlocked through the lug and the locking bolt.

7. The crystal extraction apparatus as described in claim 1, characterized in that, The crystal-retrieving vehicle is equipped with a reinforcing belt, one side of which is fixedly connected to the crystal-retrieving vehicle, and the other side is detachably connected to the crystal-retrieving vehicle. The reinforcing belt is used to reinforce or release the protective cylinder. When the reinforcing strip reinforces the protective cylinder, the reinforcing strip is attached to the upper half of the protective cylinder, and the other side of the reinforcing strip is fixedly connected to the crystal removal vehicle. When the reinforcing strip releases the protective cylinder, the other side of the reinforcing strip detaches from the crystal extraction vehicle.

8. The crystal extraction apparatus as described in claim 7, characterized in that, The inner wall of the protective cylinder is provided with a high-temperature resistant buffer layer.

9. The crystal extraction apparatus as described in claim 8, characterized in that, The protective cylinder is made of polytetrafluoroethylene or stainless steel, and a heat dissipation structure is provided on the outer side of the protective cylinder.

10. The crystal extraction apparatus as described in claim 1, characterized in that, The crystal-retrieving vehicle also includes four omnidirectional wheels, which are located at the bottom of the vehicle and at the four corners of the bottom. Each omnidirectional wheel is equipped with a brake structure.

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