Felt cutting device for thermal insulation cylinder of single crystal furnace

Abstract

The utility model discloses a felt cutting device for a thermal insulation cylinder of a single crystal furnace, which comprises the thermal insulation cylinder, an annular slide rail is sleeved at the bottom end of the thermal insulation cylinder, a felt cutting component is arranged above the annular slide rail, the felt cutting component is movably assembled in the annular slide rail, and a felt cutter at the top of the felt cutting component rotates around the circle center of the annular slide rail to cut felt. The felt cutter is always in a horizontal state, the flatness of wrapping felt during felt cutting is improved, the felt cutting efficiency is high, the effect is good, the gap between the heat preservation cylinders is reduced, and the heat leakage phenomenon is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal silicon manufacturing, in particular to a felt cutting device for a heat preservation cylinder of a single crystal furnace. Background Art

[0002] In the photovoltaic single crystal manufacturing industry, pulling a single crystal silicon rod by a single crystal furnace needs to be carried out in a thermal field. The components constituting the thermal field include solid soft felt, graphite electrodes, air guide cylinders, support rods, heaters, crucible supports, crucible rims, quartz crucibles, heat preservation cylinders, flow guide cylinders, etc. In order to keep the temperature of the thermal field constant, the heater needs to continuously supply power to generate heat.

[0003] At present, after the heat preservation cylinder of the single crystal furnace is wrapped with felt, felt cutting is required. At present, it is all manual felt cutting. Manual felt cutting easily causes the upper and lower edges of the felt on the heat preservation cylinder to be uneven, and the gap between the heat preservation cylinders is large, resulting in heat leakage. At the same time, manual felt cutting needs to be carried out multiple times, resulting in low efficiency and poor felt cutting effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a felt cutting device for a heat preservation cylinder of a single crystal furnace. By sleeving an annular slide rail on the outer periphery of the heat preservation barrel, a felt cutting component that moves in a circular motion is arranged in the annular slide rail, and the felt knife at the top of the felt cutting component is located above the top of the heat preservation cylinder and performs felt cutting operations, thus solving the above problems existing in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following solutions:

[0006] A felt cutting device for a heat preservation cylinder of a single crystal furnace includes a heat preservation cylinder. An annular slide rail is sleeved at the bottom end of the heat preservation cylinder, and a felt cutting component is arranged above the annular slide rail. The felt cutting component is movably assembled in the annular slide rail, and the felt knife at the top of the felt cutting component rotates around the center of the annular slide rail for felt cutting.

[0007] Preferably, the felt cutting component includes an arc-shaped block and a support rod located above the arc-shaped block. The support rod is perpendicular to the center of the arc-shaped block. An adjusting rod is arranged at the top end of the support rod, and the felt knife is located at the end of the adjusting rod close to the heat preservation cylinder.

[0008] Preferably, a knife handle is arranged at one end of the felt knife away from the adjusting rod.

[0009] Preferably, a plurality of first screw holes are arranged at the top end of the support rod, and the adjusting rod penetrates through the first screw holes.

[0010] Preferably, second screw holes perpendicular to the first screw holes are arranged at the top end of the support rod. The adjusting rod is provided with a plurality of third screw holes, and screws are arranged at the communication positions of the second screw holes and the third screw holes. The number of the second screw holes is multiple.

[0011] Preferably, a sliding block is provided at the bottom end of the arc-shaped block, and a sliding groove is provided on the annular slide rail, and the sliding block is located in the sliding groove.

[0012] Preferably, the surface width of the arc-shaped block is smaller than the surface width of the annular slide rail.

[0013] Preferably, a buffer pad is provided on the inner wall of the annular slide rail.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In the present utility model, an annular slide rail is sleeved on the outer wall of the heat preservation cylinder, and a felt cutting assembly that moves in the center of the annular slide rail. The arc-shaped block and the sliding block in the felt cutting assembly perform circular movement in the sliding groove of the annular slide rail, so that the adjusting rod and the felt knife connected to the top of the support rod perform felt cutting. At the same time, the first screw hole and the second screw hole provided at the top of the support rod adjust the height of the felt knife, and the third screw hole in the adjusting rod adjusts the felt cutting width of the felt knife. A screw is used to pass through the second screw hole and the third screw hole for fixation, ensuring that the felt knife is always in a horizontal state, improving the flatness of the felt wrapping during felt cutting, with high felt cutting efficiency and good effect, reducing the gap between the heat preservation cylinders, and preventing heat leakage. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is another structural schematic diagram of the present utility model;

[0018] Figure 3 is an assembly structural schematic diagram of the felt knife of the present utility model.

[0019] Reference numerals: 1 - annular slide rail, 11 - sliding groove, 2 - felt cutting assembly, 20 - arc-shaped block, 200 - sliding block, 21 - support rod, 210 - first screw hole, 211 - second screw hole, 22 - adjusting rod, 220 - third screw hole, 23 - felt knife, 24 - knife handle, 25 - screw, 3 - heat preservation cylinder. Detailed Embodiments

[0020] The following will further describe the present utility model in detail in conjunction with embodiments and the drawings, but the embodiments of the present utility model are not limited thereto.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "back", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "provided with", "installed", "connected", "connected to" 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. 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.

[0023] Embodiment 1

[0024] Embodiment 1 of the present utility model is a felt cutting device for a heat preservation cylinder of a single crystal furnace, including a heat preservation cylinder 3. An annular slide rail 1 is sleeved on the bottom end of the heat preservation cylinder 3. A felt cutting assembly 2 is arranged above the annular slide rail 1. The felt cutting assembly 2 is movably assembled in the annular slide rail 1, and the felt knife 23 at the top of the felt cutting assembly 2 rotates around the center of the annular slide rail 1 to cut the felt.

[0025] Referring to Figure 1 and Figure 2 , in the present application, an annular roller is mainly sleeved on the outer periphery of the heat preservation cylinder 3. The bottom surface of the annular roller is on the same horizontal line as the bottom surface of the heat preservation cylinder 3. At the same time, the felt cutting assembly 2 is inserted into the annular roller, so that the felt cutting assembly 2 rotates around the center of the annular roller or the heat preservation cylinder 3 under manual drive. Thus, the felt knife 23 at the top of the felt cutting assembly 2 performs a felt cutting operation on the felt wrapped around the top of the heat preservation cylinder 3. Since the felt knife 23 is fixedly connected in the felt cutting assembly 2, during felt cutting, the felt wrapped around the bottom of the heat preservation cylinder 3 can be evenly cut, ensuring the flatness of the felt after cutting, with good felt cutting effect, thereby reducing the gap between the heat preservation cylinders 3 and preventing heat leakage.

[0026] In some preferred embodiments, the felt cutting assembly 2 includes an arc-shaped block 20 and a support rod 21 located above the arc-shaped block 20. The support rod 21 is perpendicular to the center of the arc-shaped block 20. An adjusting rod 22 is provided at the top end of the support rod 21. The felt knife 23 is located at the end of the adjusting rod 22 close to the heat preservation cylinder 3.

[0027] Reference Figure 2 Figure 2 , the felt cutting assembly 2 mainly includes an arc block 20, a support rod 21 and an adjusting rod 22. The bottom end of the support rod 21 is fixed to the surface of the arc block 20, and at the same time, the support rod 21 is always in a vertical state to avoid the inclination of the felt knife 23 at its top end due to inclination, so as to avoid unevenness during the felt cutting process. Moreover, the support rod 21 is located at the center position of the arc block 20 to make the felt cutting force evenly distributed. The adjusting rod 22 is located at the top end of the support rod 21. The position of the adjusting rod 22 is fixed so that the adjusting rod 22 is perpendicular to the support rod 21 to ensure that the felt knife 23 connected to the adjusting rod 22 is in a horizontal state, realizing flat felt cutting.

[0028] In some preferred embodiments, a knife handle 24 is provided at one end of the felt knife 23 away from the adjusting rod 22. Reference Figure 3 Figure 3 , pressure is applied to the knife handle 24 by hand to make the felt knife 23 contact the surface of the wrapped felt. Then, the other hand holds the support rod 21. Under the action of both hands, the felt knife 23 makes a smooth circular motion to cut the felt.

[0029] In some preferred embodiments, a plurality of first screw holes 210 are provided at the top end of the support rod 21, and the adjusting rod 22 passes through the first screw holes 210. Therefore, a second screw hole 211 perpendicular to the first screw holes 210 is provided at the top end of the support rod 21. A plurality of third screw holes 220 are provided on the adjusting rod 22. A screw 25 is provided at the connection between the second screw hole 211 and the third screw holes 220, and the number of the second screw holes 211 is multiple.

[0030] Specifically, the first screw holes 210 and the second screw holes 211 at the top of the support rod 21 are perpendicular and communicate with each other, so as to adjust the height of the adjusting rod 22 and the felt knife 23, make the felt knife 23 fit the surface of the wrapped felt better, and thus adapt to the felt cutting of wrapped felts with different thicknesses. The adjusting rod 22 passes through the first screw holes 210. When the third screw holes 220 in the adjusting rod 22 communicate with the second screw holes 211, the screw 25 is used to pass through the second screw holes 211 and the third screw holes 220 for position fixing, ensuring that the length of the appropriate felt knife 23 matches the width of the wrapped felt, and at the same time, the adjusting rod 22 and the support rod 21 are always in a perpendicular state for felt cutting, further ensuring the flatness after felt cutting.

[0031] In some preferred embodiments, a sliding block 200 is provided at the bottom end of the arc block 20, a sliding groove 11 is provided on the annular slide rail 1, and the sliding block 200 is located in the sliding groove 11. The surface width of the arc block 20 is smaller than the surface width of the annular slide rail 1.

[0032] Specifically, the movement of the arc-shaped block 20 on the annular slide rail 1 is mainly realized by inserting the slider 200 under the arc-shaped block 20 into the slide groove 11 of the annular slide rail 1 and driving it under the action of manpower. At the same time, contact between the inner wall of the arc-shaped block 20 and the outer wall of the heat preservation cylinder 3 is avoided to prevent scratches and damage to the outer wall of the heat preservation cylinder 3 during the movement of the arc-shaped block 20, so as to extend the service life of the heat preservation cylinder 3.

[0033] Embodiment 2

[0034] This Embodiment 2 is implemented on the basis of Embodiment 1, and a buffer pad is provided on the inner wall of the annular slide rail 1.

[0035] The buffer pad can be made of rubber, silica gel or other buffer materials. Multiple grooves or protrusions can be provided on the contact surface between the buffer pad and the heat preservation cylinder 3 to ensure the stability between the annular roller and the heat preservation cylinder 3 when the arc-shaped block 20 moves on the annular roller, without displacement and without scratching or damaging the outer wall of the heat preservation cylinder 3, thus extending the service life of the heat preservation cylinder 3.

[0036] The working principle of the present utility model is as follows: during use, first, the annular slide rail 1 is sleeved on the outer periphery of the heat preservation cylinder 3 to make the buffer pad fully contact with the outer wall of the heat preservation cylinder 3, and the slider 200 connected to the lower part of the arc-shaped block 20 is located inside the slide groove 11 of the annular slide rail 1. Then, the adjusting rod 22 is passed through the corresponding first screw hole 210 according to the height requirement. When the third screw hole 220 in the adjusting rod 22 communicates with and corresponds to the second screw hole 211, it is fixed with the screw 25 according to the required felt cutting width. Hold the knife handle 24 and the support rod 21 with both hands respectively, drive the arc-shaped block 20 to move, and make the felt knife 23 connected to the top of the support rod 21 move horizontally above the wrapped felt to cut the felt, which improves the flatness of the wrapped felt, has high cutting efficiency and good effect, reduces the gap between the heat preservation cylinders 3, and prevents heat leakage.

[0037] The above is only a preferred embodiment of the present utility model, and does not impose any form of limitation on the present utility model. According to the technical essence of the present utility model, any simple modification, equivalent replacement and improvement made to the above embodiments within the spirit and principle of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A felt cutting device for a single crystal furnace insulation tube, characterized in that: The invention comprises a heat-insulating cylinder (3), the bottom end of which is sleeved with an annular slide rail (1), a felt-cutting assembly (2) is arranged above the annular slide rail (1), the felt-cutting assembly (2) is movably mounted in the annular slide rail (1) and enables a felt knife (23) at the top of the felt-cutting assembly (2) to rotate around the center of the annular slide rail (1) to cut the felt.

2. A felt cutting device for a single crystal furnace insulation cylinder according to claim 1, characterized in that: The felt cutting assembly (2) comprises an arc block (20) and a support rod (21) located above the arc block (20), the support rod (21) being perpendicular to the center of the arc block (20), an adjusting rod (22) being provided at the top end of the supporting rod (21), and the felt knife (23) being located at the end of the adjusting rod (22) close to the heat preservation tube (3).

3. The felt cutting device for the single crystal furnace insulation cylinder according to claim 2, characterized in that: The felt knife (23) is provided with a knife handle (24) at one end away from the adjusting rod (22).

4. The felt cutting device for a single crystal furnace insulation cylinder according to claim 2, characterized in that: A plurality of first screw holes (210) are provided at the top end of the support rod (21), and the adjustment rod (22) passes through the first screw holes (210).

5. The felt cutting device for the single crystal furnace insulation cylinder according to claim 4, characterized in that: Therefore, the top end of the support rod (21) is provided with a second screw hole (211) perpendicular to the first screw hole (210), the adjusting rod (22) is provided with a plurality of third screw holes (220), a screw (25) is provided at the connection between the second screw hole (211) and the third screw hole (220), and the number of the second screw holes (211) is multiple.

6. The felt cutting device for the single crystal furnace insulation cylinder according to claim 4, characterized in that: A sliding block (200) is provided at the bottom end of the arc block (20), the annular slide rail (1) is provided with a sliding groove (11), and the sliding block (200) is located in the sliding groove (11).

7. The felt cutting device for the single crystal furnace insulation cylinder according to claim 6, characterized in that: The surface width of the arc-shaped block (20) is smaller than the surface width of the annular slide rail (1).

8. The felt cutting device for the single crystal furnace insulation cylinder according to claim 6, characterized in that: The inner wall of the annular slide rail (1) is provided with a buffer pad.

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