Feeding cylinder device

Abstract

The utility model discloses a charging barrel device, which relates to the technical field of monocrystalline silicon production, and comprises a barrel body, one end of the barrel body is provided with a discharge port, the barrel body is internally provided with a plurality of accommodating cavities arranged along the circumferential direction of the barrel body, and each accommodating cavity is communicated with the discharge port; the cone is used for blocking the discharge hole; the first end of the connecting rod assembly is connected with the cone, the connecting rod assembly is used for pushing the cone to move in the extending direction of the barrel, and when the displacement of the cone reaches different preset values, blocking of all the containing cavities is sequentially relieved. Compared with the prior art, the charging barrel device has the advantages that the tedious process of charging silicon materials into a quartz barrel in batches and then charging the silicon materials into the single crystal furnace for multiple times is avoided, the tedious workload in the charging process is reduced, the consumed time of charging work is shortened, and the charging work efficiency is improved; and accurate control over the amount of the added silicon material in the feeding process is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal silicon production, in particular to a feeding barrel device. Background Art

[0002] In the photovoltaic crystal pulling process, silicon material is added to the single crystal furnace according to the material addition comparison table. When the material addition is in the final stage, it is necessary to add material in small amounts and multiple times, and the method of adding material while melting is adopted to prevent the quartz tube from touching the bottom and splashing silicon. However, due to the block characteristics of silicon material, after adding material within the specified time and then closing the leakage port, when the feeding stops, the weight of the added silicon material cannot be accurately controlled. In addition, when closing the leakage port through the valve and stopping the feeding process, the valve may be stuck and stopped by the block silicon material, making it impossible to effectively close the leakage port. At present, the silicon material that can be carried by a barrel is divided into two parts, and then loaded into the quartz tube twice before adding silicon material to the single crystal furnace to complete the feeding work. This method will cause waste of quartz tube space and increase auxiliary working hours, reducing the efficiency of feeding work.

[0003] Therefore, how to improve the efficiency of the feeding work is a technical problem that those skilled in the art need to solve at present. Utility Model Content

[0004] The utility model aims to provide a feeding barrel device, which is used to improve the efficiency of feeding work in the photovoltaic crystal pulling process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A feeding cylinder device, comprising:

[0007] A cylinder, one end of which is provided with a discharge port; the interior of the cylinder has a plurality of accommodating cavities arranged along the circumference of the cylinder, each of which is communicated with the discharge port;

[0008] A cone, used for blocking the discharge port;

[0009] A connecting rod assembly, wherein the first end of the connecting rod assembly is connected to the cone, and is used to push the cone to move along the axial direction of the cylinder, and when the displacement of the cone reaches different preset values, the blockage of the accommodating cavity is released in turn.

[0010] In the case of adopting the above technical scheme, in the process of adding materials to the single crystal furnace in the photovoltaic crystal pulling process, compared with the existing technical scheme, a bucket of silicon material that can be carried is divided into two parts, and then loaded into a quartz cylinder twice and then added to the single crystal furnace to complete the feeding. The cylinder in the feeding cylinder device of the present application is provided with multiple accommodating cavities, and the required amount of silicon material can be added to each accommodating cavity according to actual needs, and then the cylinder containing the silicon material is extended into the single crystal furnace, and the discharge port of the cylinder is blocked by the cone at this time. The discharge port of the cylinder is in the same position as the discharge end of the accommodating cavity; when adding materials to the single crystal furnace according to the feeding comparison table, the cone is pushed to move by the connecting rod assembly to release the blockage of the discharge end of the accommodating cavity, and the displacement of the cone pushed by the connecting rod assembly reaches different preset values, and the discharge ends of each accommodating cavity can be unblocked in turn, so that the preset amount of silicon material in each accommodating cavity is added to the single crystal furnace in turn within the specified time, thereby completing the feeding work. In addition, in the prior art, there is a method of providing the charging barrel with inner and outer chambers in the radial direction, but this scheme is subject to the diameter of the single crystal furnace mouth, and the inner barrel diameter needs to be smaller to ensure implementation within the existing restricted space. At the same time, the inner barrel is also arranged with parts such as a push rod, which further compresses the available space of the inner barrel, resulting in a further reduction in the space that the inner barrel can accommodate silicon materials, causing a greater risk of blocking during the discharge process, and the reliability of the entire device is poor. While the accommodating chamber in the charging barrel device of the present application is arranged circumferentially to divide the internal space of the charging barrel into multiple cavities, it is fully guaranteed that each accommodating chamber has a larger space for accommodating silicon materials, and the effective cross-section of the accommodating chamber for accommodating silicon materials is increased, thereby reducing the risk of blockage of the accommodating chamber. Therefore, the charging barrel device of the present application avoids the cumbersome process of loading silicon materials into quartz barrels in batches and then repeatedly feeding the single crystal furnace, reduces the complicated workload during the feeding process, reduces the time-consuming feeding work, and then significantly improves the working efficiency of the feeding, by adding the required amount of silicon materials in each accommodating chamber, it also improves the precise control of the amount of silicon materials added during the feeding process.

[0011] Optionally, in the above-mentioned feeding barrel device, the cone is provided as one, and one cone is provided with a plurality of conical steps, the number of the conical steps is the same as the number of the accommodating cavities and corresponds to each other, and when the conical steps move to different positions along the axial direction of the barrel, the conical steps release the blockage of the accommodating cavities. In this way, by providing a plurality of conical steps on one cone, the blockage of each accommodating cavities is completed, and then one cone can be pushed by a connecting rod assembly to realize the gradual opening and blocking of different accommodating cavities.

[0012] Optionally, in the above-mentioned feeding barrel device, when the conical step blocks the accommodating cavity, in the axial direction of the barrel, the lengths of the conical steps and the inner walls of the accommodating cavities that are sealed are different; or,

[0013] When the conical step seals the accommodating cavity, in the axial direction of the cylinder body, the extension lengths of the respective accommodating cavities are different, so that the discharge ends of the respective accommodating cavities are located on different height planes. As an implementation manner, the extension lengths of the respective conical steps are the same; of course, the extension lengths of the respective accommodating cavities may also be different. In this way, by setting different lengths of the inner wall of each accommodating cavity that the conical step fits and seals, when the connecting rod assembly pushes the cone to move to a preset distance value, the conical steps with different sealing lengths gradually slide off and separate from the accommodating cavity, successively releasing the blockage of the discharge ends of the respective accommodating cavities, and realizing the orderly addition of the silicon materials in the respective accommodating cavities into the single crystal furnace. Or, the extension lengths of the respective accommodating cavities are different, that is, there is a height difference between the discharge ends of the respective accommodating cavities and they are not on the same plane. Then, during the process of pushing the cone to move, relative to the shorter accommodating cavity, the conical step in it first disengages to release the blockage of the discharge end of the accommodating cavity for discharging materials. As the cone continues to move, the discharge ends of other accommodating cavities are successively unsealed to complete the addition of the silicon materials.

[0014] Optionally, in the above-mentioned feeding cylinder device, the number of the accommodating cavities is set to two, namely a first accommodating cavity and a second accommodating cavity. The cone is provided with two conical steps, namely a first conical step and a second conical step. The first conical step is used to seal the discharge end of the first accommodating cavity, and the second conical step is used to seal the discharge end of the second accommodating cavity. When the conical step seals the accommodating cavity, the length of the second conical step fitting and sealing with the inner wall of the second accommodating cavity is greater than the length of the first conical step fitting and sealing with the inner wall of the first accommodating cavity. In this application, the specific number of the accommodating cavities is set to two, namely the first accommodating cavity and the second accommodating cavity. The cone used to seal the discharge port of the cylinder body is correspondingly provided with a first conical step and a second conical step, and the connecting rod assembly is connected to the first conical step and the second conical step to control the first conical step and the second conical step, so as to realize the opening and discharging or closing of the first accommodating cavity and the second accommodating cavity. Among them, the length of the second conical step fitting and sealing with the inner wall of the second accommodating cavity is greater than the length of the first conical step fitting and sealing with the inner wall of the first accommodating cavity. Therefore, during the discharging process, the silicon material in the first accommodating cavity first slides into the single crystal furnace, and then the silicon material in the second accommodating cavity slides into the single crystal furnace.

[0015] Optionally, the conical angle of the conical step is 30° - 60°; along the axial direction of the cylinder body, the distance between adjacent conical surfaces is 70 - 220 mm. The distance between the conical surfaces can be the minimum distance, the maximum distance or any distance between the minimum distance and the maximum distance of the adjacent conical surfaces along the axial direction of the cylinder body.

[0016] Optionally, in the above-mentioned charging barrel device, a partition plate is further included, and the partition plate is arranged in the cavity of the barrel body to divide the cavity of the barrel body into a plurality of the accommodating cavities along the circumferential direction of the barrel body. In this way, by arranging the partition plate in the cavity of the barrel body, a plurality of small spaces are separated from the inner cavity of the barrel body by the partition plate, thereby realizing the formation of the accommodating cavities and ensuring that the overall structure has better simplicity.

[0017] Optionally, in the above-mentioned charging barrel device, a sleeve is further included, the connecting rod assembly passes through the sleeve and is connected to the cone, and the partition plate is fixed to the outer wall of the sleeve, or the partition plate is connected to the inner wall of the barrel body. In this way, the connecting rod assembly not only realizes the connection with the cone by passing through the sleeve, but also the sleeve plays a role in protecting and guiding the movement of the connecting rod assembly. At the same time, the partition plate can be directly connected to the outer wall of the sleeve to realize the installation and fixation of the partition plate, or the partition plate can also be directly connected and fixed to the inner wall of the barrel body.

[0018] Optionally, in the above-mentioned charging barrel device, the partition plate includes a plurality of segmented plates arranged along the axial direction of the barrel body, and any two adjacent segmented plates are detachably connected. The sleeve includes a plurality of segmented tubes arranged along the axial direction of the barrel body, and any two adjacent segmented tubes are detachably connected. The segmented tube is connected and fixed to the segmented plate. In this way, during the later maintenance process, only the damaged segmented plates and segmented tubes need to be replaced, avoiding the replacement and maintenance of the entire isolation sleeve assembly, greatly reducing the workload of maintenance, improving the maintenance work efficiency, and also reducing the maintenance cost.

[0019] Optionally, in the above-mentioned charging barrel device, a protective cover plate is further included, and the protective cover plate is connected to the barrel body to cover one end of the barrel body away from the discharge port. In this way, the feeding port of the accommodating cavity is covered by the protective cover plate, playing a protective role for the silicon material in the accommodating cavity.

[0020] Optionally, in the above-mentioned charging barrel device, a plurality of the cones and the connecting rod assemblies are provided, and one connecting rod assembly and one cone form a set of plugging assemblies. Each cone is provided with a conical step. The number of the plugging assemblies is the same as and corresponds to the number of the accommodating cavities one by one, and along the extending direction of the connecting rod assembly, there is a height difference between the second ends of the connecting rod assemblies in each of the plugging assemblies. In this way, by arranging a set of plugging assemblies in each accommodating cavity, the plugging structures of the respective accommodating cavities are independent of each other, and sequential feeding of the silicon material in each accommodating cavity can also be realized. Description of the Drawings

[0021] The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a feeding cylinder device disclosed in an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 a cross-sectional view taken along A-A in

[0024] Figure 3 is a schematic structural diagram of an isolation sleeve assembly disclosed in an embodiment of the present utility model;

[0025] Figure 4 is a schematic structural diagram of a sleeve disclosed in an embodiment of the present utility model;

[0026] Figure 5 is a schematic structural diagram of a partition plate connected to a cylinder body disclosed in an embodiment of the present utility model;

[0027] Figure 6 is Figure 5 a cross-sectional view taken along B-B in

[0028] Reference numerals:

[0029] 100 is the cylinder body, 110 is the accommodation cavity, and 111 is the discharge port;

[0030] 200 is the cone, 210 is the first conical step, and 220 is the second conical step;

[0031] 300 is the connecting rod assembly;

[0032] 400 is the isolation sleeve assembly, 410 is the partition plate, 411 is the segmented plate, 420 is the sleeve, and 421 is the segmented pipe;

[0033] 500 is the protective cover plate;

[0034] 600 is the movable disk assembly. Detailed implementation manners

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present 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 only used to explain the present utility model and are not used to limit the present utility model.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] The core of the present utility model is to provide a charging barrel device for improving the efficiency of the charging operation in the photovoltaic crystal pulling process.

[0041] Such as Figure 1 and Figure 2As shown in the figure, an embodiment of the present utility model discloses a feeding barrel device, which includes a barrel body 100, a cone 200 and a connecting rod assembly 300. Among them, a plurality of receiving cavities 110 for containing silicon materials are arranged in the inner cavity of the barrel body 100. Each receiving cavity 110 extends along the extending direction of the barrel body and is arranged along the circumferential direction of the barrel body. Along the axial direction of the barrel body, both ends of each receiving cavity 110 are respectively a feeding end and a discharging end. One end of the barrel body is provided with a discharging port 111. The receiving cavity is communicated with the discharging port 111 through the discharging end, and the feeding port of the barrel body is communicated with the feeding end of the receiving cavity, so as to add silicon materials to the receiving cavity 110 and put the silicon materials in the receiving cavity 110 into the single crystal furnace through the discharging port 111.

[0042] Before feeding the single crystal furnace, the discharging end of the receiving cavity 110 is blocked by the cone 200 to prevent the leakage of silicon materials. At the same time, the first end of the connecting rod assembly 300 is connected to the cone 200. The cone 200 can be pushed to move along the extending direction of the barrel body 100 through the connecting rod assembly 300. When the displacement of the cone 200 pushed by the connecting rod assembly 300 reaches different preset values, the blocking of the discharging ends of each receiving cavity by the cone 200 can be released in sequence, so that the silicon materials in each receiving cavity 110 can slide into the single crystal furnace one by one, and the work of feeding the single crystal furnace according to the feeding comparison table is completed.

[0043] In a specific embodiment, the number of cones 200 is one, and a plurality of conical steps are arranged on one cone 200. The number of conical steps is the same as the number of receiving cavities and one conical step corresponds to the discharging end of one receiving cavity. Thus, the discharging ends of each receiving cavity are blocked by each conical step on one cone 200. Therefore, the work of gradually opening and blocking each receiving cavity 110 can be completed by controlling one cone 200 through one connecting rod assembly 300, and the work of adding silicon materials to the single crystal furnace in a preset order is completed. In this embodiment, along the axial direction of the barrel body, the discharging ends of a plurality of receiving cavities are the discharging ports of the barrel body, and the discharging ends of the receiving cavities are at the same position as the discharging ports of the barrel body.

[0044] In addition, the side surface of the conical step can be closely attached to the inner wall of the accommodating cavity 110 to realize the blocking of the discharging end of each accommodating cavity 110 by the cone 200. And along the axial direction of the cylinder body, the extension lengths of the conical steps in close contact with the inner wall of the accommodating cavity 110 are different. Thus, when the connecting rod assembly 300 pushes the cone 200 away from the cylinder body 100, the conical step with a shorter sealing extension length in the accommodating cavity 110 disengages from the accommodating cavity 110 first. At this time, the discharging end of this accommodating cavity 110 is unblocked, and the silicon material slides from this accommodating cavity 110 into the single crystal furnace. Then, as the connecting rod assembly 300 continues to push the cone 200, the other conical steps gradually disengage from the accommodating cavity 110 in sequence, completing the orderly falling of the silicon material in the other accommodating cavities 110 into the single crystal furnace. In this embodiment, the extension length of the conical step in close contact with the inner wall of the accommodating cavity 110 refers to: when the conical step blocks the accommodating cavity, along the axial direction of the cylinder body, the side surface of the conical step in contact with the inner wall of the cylinder body, and the length of this side surface inside the accommodating cavity.

[0045] In another specific embodiment, along the extending direction of the cylinder body 100, the extension lengths of the accommodating cavities 110 are different, so that there is a preset distance between the discharging ends of the accommodating cavities 110 along the extending direction of the cylinder body 100, and they are spaced apart from each other and not on the same horizontal plane. Then, during the process of pushing the cone 200 by the connecting rod assembly 300, the conical steps in the accommodating cavities 110 with shorter lengths disengage first, unblocking the discharging ends of these accommodating cavities 110 for discharging. Then, as the connecting rod assembly 300 continues to push the cone 200, the conical steps in the other accommodating cavities 110 disengage in sequence to unblock the discharging ends. In this embodiment, by setting the lengths of the accommodating cavities 110 along the axial direction of the feeding cylinder to be different, the conical steps can sequentially unseal and block different accommodating cavities. The extension lengths of the conical steps along the axial direction of the feeding cylinder can be the same or different. In this embodiment, along the extending direction of the cylinder body 100, the discharging ends of the accommodating cavities 110 are at different positions. The lower end of the cylinder body can be regarded as having multiple discharging ports, and the discharging end of each accommodating cavity is a discharging port of the cylinder body.

[0046] Such as Figure 2As shown, in a specific embodiment, the number of accommodation cavities 110 is set to two, namely a first accommodation cavity and a second accommodation cavity, and the cone 200 is provided with two conical steps, namely a first conical step 210 and a second conical step 220. The first conical step 210 extends into the first accommodation cavity to block the discharge end of the first accommodation cavity, and the second conical step 220 extends into the second accommodation cavity to block the discharge end of the second accommodation cavity. Moreover, the extension length of the second conical step 220 in sealing fit with the inner wall of the second accommodation cavity is greater than the extension length of the first conical step 210 in sealing fit with the inner wall of the first accommodation cavity. Thus, during the feeding process, the silicon material in the first accommodation cavity first falls into the single crystal furnace, and then as the connecting rod assembly 300 continues to push the cone 200, the silicon material in the second accommodation cavity can slide into the single crystal furnace. Among them, the extension length of the first conical step 210 in sealing fit with the inner wall of the first accommodation cavity is relatively short, and it can be that the first conical step 210 only contacts the bottom end face of the accommodation cavity. Of course, the extension length of the first conical step 210 in sealing fit with the inner wall of the first accommodation cavity can also be set as required. In this embodiment, the discharge ends of the two accommodation cavities are at the same position as the discharge port 111 of the cylinder body, and the discharge end of the accommodation cavity is the discharge port of the cylinder body.

[0047] In this embodiment, along the axial direction of the cylinder body, when the connecting rod assembly descends 110 mm from the blocking state, the channel of the right accommodation cavity is opened. The diameter of the right accommodation cavity is larger than the maximum particle size of the lump material, which can ensure the normal falling of the lump silicon material without blockage. The diameter refers to the distance between the virtual conical surface passing through the lowest point of the cylinder body and parallel to the conical surface of the conical step and the conical surface of the conical step. Along the axial direction of the cylinder body, when the connecting rod assembly descends 220 mm from the blocking state, the left channel is also opened. At this time, the diameter of the left accommodation cavity is larger than the maximum particle size of the lump material, which can ensure the normal falling of the lump silicon material without blockage. In addition, during the unsealing process, the silicon material in the accommodation cavity slides out from the gap between the cone 200 and the accommodation cavity. Therefore, by setting the cone angle of the cone 200, the distribution range of the silicon material sliding out from the discharge port 111 can be adjusted, and the sliding state of the silicon material can be adjusted during the feeding process, improving the controllability of the feeding. When the cone angle is too small, the distribution range of the silicon material sliding out is small, which is not conducive to uniform dispersion and causes the silicon material to concentrate. When the cone angle is too large, the sliding speed of the silicon material is slow, affecting the discharging speed, and the range is too large, which is easy to touch the wall of the single crystal furnace. Therefore, considering factors such as the distribution range and sliding speed of the silicon material, in a specific embodiment, the cone angle of the cone 200 can be set to 30° - 60°, specifically it can be 30°, 40°, 45°, 50°, 60°, etc.

[0048] The charging cylinder device provided in this embodiment can add the required amount of silicon material to each accommodating cavity 110 according to the charging comparison table, avoiding the complicated process of adding silicon material to the single crystal furnace one by one through a quartz cylinder in multiple batches. It is only necessary to add the silicon material in each accommodating cavity 110 in sequence according to the charging comparison table. When charging the single crystal furnace, only need to push the cone 200 to move through the connecting rod assembly 300 to unseal each accommodating cavity in sequence to complete the charging, reducing the workload and time of charging, improving the efficiency of the charging work, and also improving the accuracy of controlling the required amount of silicon material during the charging process.

[0049] As Figure 2 and Figure 3 shown, the charging cylinder device provided in this embodiment further includes an isolation sleeve assembly 400. The isolation sleeve assembly 400 includes a partition plate 410. The partition plate 410 is arranged in the cavity of the cylinder body 100 to divide the cavity of the cylinder body 100 along the circumferential direction of the cylinder body, so that the separated space forms an accommodating cavity 110 for storing silicon material. While meeting the requirement of forming the accommodating cavity 110, it also ensures that the overall structure of the cylinder body 100 has good simplicity, which is conducive to production and processing and reduces production costs.

[0050] At the same time, the isolation sleeve assembly 400 is also provided with a sleeve 420. The sleeve 420 extends towards the cone 200. The connecting rod assembly 300 is located in the inner cavity of the sleeve 420 and passes through to be connected with the cone 200. During the discharging process, the connecting rod assembly 300 moves in the sleeve 420. Therefore, the sleeve 420 not only plays a certain protective role for the connecting rod assembly 300, but also plays a guiding role during the movement of the connecting rod assembly 300, ensuring the smooth movement of the connecting rod assembly 300. The partition plate 410 can be directly connected to the outer wall of the sleeve 420 to fix the partition plate 410 and keep the partition plate 410 in good stability. Or, as Figure 5 and Figure 6 shown, the partition plate 410 can also be directly fixed on the inner wall of the cylinder body 100, and a groove is provided on the axis of the partition plate 410 for placing the sleeve 420. Or, those skilled in the art can design the fixing method of the partition plate 410 according to actual needs, which will not be elaborated herein.

[0051] As Figure 3 and Figure 4As shown in the figure, the partition plate 410 is composed of multiple segmented plates 411, and the sleeve 420 is composed of multiple segmented tubes 421. The number of segmented plates 411 is the same as that of segmented tubes 421, and one segmented plate 411 is fixedly connected to one segmented tube 421. The segmented plates 411 and the segmented tubes 421 are detachably connected to assemble the partition plate 410 and the segmented plate 411. By setting the partition plate 410 and the sleeve 420 into a multi-module splicing structure, only the damaged segmented plate 411 or segmented tube 421 needs to be replaced during the later maintenance process, avoiding the replacement and repair of the entire isolation sleeve assembly 400, greatly reducing the workload of maintenance, improving the maintenance work efficiency, and also reducing the maintenance cost. In addition, when manufacturing the partition plate 410 and the sleeve 420, since the overall lengths of the partition plate 410 and the sleeve 420 are relatively long, if they are manufactured integrally, the processing difficulty will increase. However, by adopting the multi-module splicing structure of the partition plate 410 and the sleeve 420 provided in this embodiment, it is beneficial to reduce the manufacturing difficulty and facilitate production and manufacturing.

[0052] In a specific embodiment, when the connecting rod assembly 300 pushes the cone 200 to move and the moving distance reaches 100 mm - 110 mm, the first conical step 210 is disengaged from the first receiving cavity, releasing the blockage of the discharge end of the first receiving cavity by the first conical step 210, so that the silicon material in the first receiving cavity slides into the single crystal furnace. When the connecting rod assembly 300 continues to push the cone 200 to move and the moving distance reaches 200 mm - 220 mm, the second conical step 220 disengages from the second receiving cavity, releasing the blockage of the discharge end of the second receiving cavity by the second conical step 220, enabling the silicon material in the second receiving cavity to fall into the single crystal furnace, completing the sequential addition of silicon material from the first receiving cavity and the second receiving cavity to the single crystal furnace. At the same time, during the addition process, it is avoided that the connecting rod assembly 300 pushes the cone 200 to touch the silicon material in the single crystal furnace, preventing damage to the cone.

[0053] As Figure 1 shown, the feeding cylinder device provided in this embodiment is also provided with a protective cover plate 500. The protective cover plate 500 is installed on the cylinder body 100 to cover the feeding port of the receiving cavity 110, preventing the silicon material in the receiving cavity 110 from leaking out from the feeding port of the receiving cavity 110, improving the safety protection of the silicon material. Of course, it can be understood that the protective cover plate 500 is provided with through holes to allow the connecting rod assembly 300 to extend.

[0054] In another specific embodiment, a connecting rod assembly 300 and a cone 200 are combined into a set of plugging assemblies. The number of plugging assemblies is the same as and corresponds one by one to the number of accommodation cavities 110, that is, a set of plugging assemblies is separately placed in each accommodation cavity 110. Each cone 200 is a conical step, and along the extending direction of the connecting rod assembly 300, there is a height difference between the second ends of the connecting rod assemblies 300 in each plugging assembly, thereby forming a switching gap, that is, the lengths of the connecting rod assemblies 300 in each plugging assembly are different, so that the height difference between the second end of the longer connecting rod assembly 300 and the shorter connecting rod assembly 300 at the second end of the connecting rod assembly 300 is the switching gap. Thus, during the process of using a pressing component, such as a push rod, to push and move in the direction of the connecting rod assembly 300, the push rod will first abut against the longer connecting rod assembly 300, and then the connecting rod assembly 300 is pressed and moved to push the cone 200 to move to release the plugging of the accommodation cavity 110. As the push rod continues to move and when the pushing distance reaches the preset switching gap, the push rod abuts against the shorter connecting rod assembly 300, and the shorter connecting rod assembly 300 is pressed and moved. Subsequently, the shorter connecting rod assembly 300 pushes the cone 200 connected thereto to move to release the plugging of the accommodation cavity 110 where the shorter connecting rod assembly 300 is arranged, so that the silicon material in the accommodation cavity 110 slides into the single crystal furnace through the discharge port 111.

[0055] As Figure 1 shown, the charging barrel device provided in this embodiment further includes a movable disk assembly 600. The cylinder 100 is installed on the movable disk assembly 600 and is installed on the single crystal furnace through the movable disk assembly 600. During the process of feeding the single crystal furnace, it ensures that the cylinder 100 has good stability, and the connection between the cylinder 100 and the movable disk assembly 600 is detachable, so as to facilitate detaching the cylinder 100 at any time according to actual needs and transporting it to other processes for processing.

[0056] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0057] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A feeding cylinder device, characterized in that: include: A cylinder, one end of which is provided with a discharge port; the interior of the cylinder has a plurality of accommodating cavities arranged along the circumference of the cylinder, each of which is communicated with the discharge port; A cone, used for blocking the discharge port; A connecting rod assembly, wherein the first end of the connecting rod assembly is connected to the cone, and is used to push the cone to move along the axial direction of the cylinder, and when the displacement of the cone reaches different preset values, the blockage of the accommodating cavity is released in turn.

2. The feeding cylinder device according to claim 1, characterized in that: The cone is provided as one, and one cone is provided with a plurality of conical steps, the number of the conical steps is the same as the number of the accommodating cavities and corresponds one to one, and when the conical steps move to different positions along the axial direction of the cylinder, the conical steps release the blockage of the accommodating cavities.

3. The feeding cylinder device according to claim 2, characterized in that: When the conical step blocks the accommodating cavity, in the axial direction of the cylinder, the lengths of the conical steps and the inner walls of the accommodating cavities that are sealed are different; or, When the conical step blocks the accommodating cavity, in the axial direction of the cylinder, the extension lengths of the respective accommodating cavities are different, so that the discharge ends of the respective accommodating cavities are located at different height planes, and the respective conical steps fit and seal the discharge ends of the accommodating cavities.

4. The feeding cylinder device according to claim 1, characterized in that: The number of the accommodating chambers is set to two, namely the first accommodating chamber and the second accommodating chamber, and the cone is provided with two conical steps, namely the first conical step and the second conical step; the first conical step is used to block the discharge end of the first accommodating chamber, and the second conical step is used to block the discharge end of the second accommodating chamber; When the conical step blocks the accommodating cavity, a sealing length between the second conical step and the inner wall of the second accommodating cavity is greater than a sealing length between the first conical step and the inner wall of the first accommodating cavity.

5. The feeding cylinder device according to claim 2 or 4, characterized in that: The cone angle of the conical step is 30° to 60°.

6. The feeding cylinder device according to claim 1, characterized in that: It also includes a partition plate, which is arranged in the cavity of the cylinder, so that the cavity of the cylinder is divided into a plurality of accommodating cavities along the circumference of the cylinder by the partition plate.

7. The feeding cylinder device according to claim 6, characterized in that: It also includes a sleeve, the connecting rod assembly passes through the sleeve and is connected to the cone, and the partition plate is fixed on the outer wall of the sleeve, or the partition plate is connected to the inner wall of the cylinder.

8. The feeding cylinder device according to claim 7, characterized in that: The partition plate includes a plurality of segmented plates arranged along the axial direction of the cylinder, and any two adjacent segmented plates are detachably connected; the sleeve includes a plurality of segmented tubes arranged along the axial direction of the cylinder, and any two adjacent segmented tubes are detachably connected, and the segmented plates are fixedly connected to the segmented tubes.

9. The feeding cylinder device according to claim 1, characterized in that: It also includes a protective cover plate, which is connected to one end of the cylinder away from the discharge port.

10. The charging cylinder device according to claim 1, characterized in that: The cone and the connecting rod assembly are each provided with a plurality, and one connecting rod assembly and one cone form a group of blocking assemblies, each of the cones is provided with a conical step, the number of the blocking assemblies is the same as the number of the accommodating cavities and corresponds one to one, and along the extension direction of the connecting rod assembly, there is a height difference between the second ends of the connecting rod assemblies in each of the blocking assemblies.

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