Solidified felt interlayer heat preservation barrel

Abstract

The utility model discloses a solidified felt interlayer heat preservation barrel which comprises an inner-layer heat preservation barrel body, an insulating material for preventing heat loss is installed on the outer side of the inner-layer heat preservation barrel body, and the insulating material protects an inner material through an outer-layer heat preservation barrel body at the outer position. A single crystal material inside the outer-layer heat preservation barrel body is heated through a heater installed at the outer position, a soft felt is arranged on the end face of the outer side of the inner-layer heat preservation barrel body, and an inner-layer curing felt is arranged at the inner position of the inner-layer heat preservation barrel body. According to the novel heat preservation method of the Czochralski single crystal furnace heat preservation barrel felt, the innermost layer of a heat preservation barrel is changed into the solidified felt, and the outer layer of the heat preservation barrel is still made of the normal soft felt, so that the heat preservation performance of the inner layer is enhanced, and the defects that the outer diameter error is high due to low plasticity of the solidified felt, and the pure solidified felt is difficult to clamp and high in cost are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field related to cured felt sandwich insulation barrels, and particularly relates to a cured felt sandwich insulation barrel. Background Art

[0002] The curing felt sandwich insulation barrel is a device used for insulation. The curing felt sandwich is a high-temperature resistant and heat-insulating material used to wrap the furnace body inside the single crystal furnace to reduce heat loss. The curing felt sandwich insulation barrel can effectively improve the insulation performance of the single crystal furnace and reduce energy consumption.

[0003] The inner surface layer of the insulation barrel easily reacts with silicon vapor, which reduces its service life, causes felt chips to fall off and the felt layer to loosen, resulting in poor cleanliness and thermal insulation in the single crystal furnace, affecting single crystal formation or product quality. Utility Model Content

[0004] The purpose of the utility model is to provide a cured felt sandwich insulation barrel to solve the problem proposed in the above background technology that the inner surface layer of the insulation barrel is easily reacted with silicon vapor, thereby reducing the service life, causing felt chips to fall off and the felt layer to loosen, resulting in poor cleanliness and thermal insulation in the single crystal furnace, affecting single crystal crystallization or product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cured felt sandwich insulation barrel, comprising an inner insulation barrel body, wherein an insulating material is installed at an outer position of the inner insulation barrel body to prevent heat loss, and the insulating material protects the inner material through the outer insulation barrel body at an external position, and the outer insulation barrel body heats the single crystal material inside through a heater installed at an external position, and the heater makes the heat more uniform through the heat dissipation gap at the outer wall position, and the heater is installed in the interior of the single crystal furnace through a lifting ear at the upper end position, and the lifting ear is installed through a circular hole at the outer wall position, and a bottom support seat is installed at the lower end position of the heater, and the heater is installed with the bottom support seat through a sleeve rod fixed at the left and right sides of the lower end, and the bottom support seat allows the sleeve rod to move through a slide groove at the internal position, a soft felt is provided at the outer end surface position of the inner insulation barrel body, and an inner layer of cured felt is provided at the internal position of the inner insulation barrel body.

[0006] Preferably, the soft felt is installed at the outer wall of the inner insulation barrel body, and the soft felt increases the heat preservation effect of the inner insulation barrel body.

[0007] Preferably, the inner layer of cured felt is located at the inner wall of the inner heat-insulating barrel body, and the inner layer of cured felt can reduce heat loss.

[0008] Preferably, the heater is installed at an outer side of the outer heat-insulating barrel body, and the heater heats the outer heat-insulating barrel body.

[0009] Preferably, the heater is mounted on the single crystal furnace via a lifting lug.

[0010] Preferably, the heater is movable at the upper end of the bottom support seat.

[0011] Preferably, the heater is rotated so that the lifting lug can be aligned with the mounting interface.

[0012] Preferably, the movement of the heater causes the sleeve rod to move along the slide groove.

[0013] Compared with the prior art, the present invention provides a cured felt sandwich insulation barrel, which has the following beneficial effects:

[0014] 1. The present invention provides a new insulation method for the insulation barrel felt of a CZ single crystal pulling furnace. The innermost layer of the insulation barrel is changed to solidified felt, while the outer layer still uses normal soft felt. This method enhances the thermal insulation of the inner layer and avoids the shortcomings of high outer diameter error caused by low plasticity of solidified felt, difficult clamping of pure solidified felt, and high cost.

[0015] 2. When the heater is installed with the single crystal furnace through the lifting lug, the heater can be rotated at the upper end of the bottom support seat. When the heater rotates, the sleeve rod moves along the slide groove. The movement of the heater enables the lifting lug to be aligned with the external installation interface during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a cured felt sandwich insulation barrel according to the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of a barrel body of a cured felt sandwich insulation barrel with an inner layer of insulation barrel according to the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of a bottom support seat of a cured felt sandwich insulation barrel according to the present invention.

[0019] In the figure: 1. Inner insulation barrel body; 2. Lifting ear; 3. Heater; 4. Bottom support seat; 5. Soft felt; 6. Inner curing felt; 7. Connecting rod; 8. Slide groove; 9. Outer insulation barrel body; 10. Insulation material; 11. Through hole; 12. Heat dissipation gap. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The utility model provides Figure 1-3 The shown type of cured felt sandwich insulation barrel includes an inner insulation barrel body 1, and an insulating material 10 is installed at the outer side of the inner insulation barrel body 1 to prevent heat loss. The insulating material 10 protects the internal material through the outer insulation barrel body 9 at the external position. The outer insulation barrel body 9 heats the internal single crystal material through a heater 3 installed at the external position. The heater 3 makes the heat more uniform through the heat dissipation gap 12 at the outer wall position. The heater 3 is installed inside the single crystal furnace through the lifting ear 2 at the upper end position, and the lifting ear 2 is installed through the through circular hole 11 at the outer wall position. A bottom support seat 4 is installed at the lower end position of the heater 3. The heater 3 is installed with the bottom support seat 4 through the socket rod 7 fixed at the left and right sides of the lower end. The bottom support seat 4 allows the socket rod 7 to be movable through the slide groove 8 at the internal position. A soft felt 5 is provided at the outer end face position of the inner insulation barrel body 1, and an inner layer of cured felt 6 is provided at the internal position of the inner insulation barrel body 1.

[0022] The main function of the inner layer curing felt 6 insulation barrel is heat insulation. The inner layer curing felt 6 is a high temperature resistant and heat insulating material. It is wrapped around the furnace body inside the single crystal furnace to prevent heat from being transferred outward and reduce heat loss, thereby improving the thermal insulation performance of the furnace body.

[0023] like Figure 1 and Figure 3 As shown, the soft felt 5 is installed at the outer wall position of the inner insulation barrel body 1, and the soft felt 5 increases the insulation effect of the inner insulation barrel body 1. The inner curing felt 6 is located at the inner wall position of the inner insulation barrel body 1, and the inner curing felt 6 can reduce heat loss. The heater 3 is installed at the outer side position of the outer insulation barrel body 9, and the heater 3 heats the outer insulation barrel body 9. The heater 3 is installed with the single crystal furnace through the lifting ear 2. The heater 3 can be moved at the upper end position of the bottom support seat 4. The rotation of the heater 3 enables the lifting ear 2 to be aligned with the installation interface, and the movement of the heater 3 enables the sleeve rod 7 to move along the slide groove 8.

[0024] When the heater 3 is installed with the single crystal furnace through the lifting ear 2, the heater 3 can be rotated at the upper end position of the bottom support seat 4. When the heater 3 rotates, the sleeve rod 7 moves along the slide groove 8. The movement of the heater 3 enables the lifting ear 2 to be aligned with the external installation interface during installation.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cured felt sandwich insulation barrel, characterized in that: The invention comprises an inner heat-insulating barrel body (1), an insulating material (10) for preventing heat loss is installed at an outer position of the inner heat-insulating barrel body (1), the insulating material (10) protects the inner material through the outer heat-insulating barrel body (9) at an outer position, the outer heat-insulating barrel body (9) heats the inner single crystal material through a heater (3) installed at an outer position, the heater (3) makes the heat more uniform through a heat dissipation gap (12) at an outer wall position, and the heater (3) is installed inside the single crystal furnace through a lifting lug (2) at an upper end position The ear (2) is installed through the circular hole (11) at the outer wall position, the bottom support seat (4) is installed at the lower end position of the heater (3), the heater (3) is installed with the bottom support seat (4) through the sleeve rods (7) fixed at the left and right sides of the lower end, the bottom support seat (4) allows the sleeve rods (7) to move through the slide groove (8) at the internal position, the soft felt (5) is provided at the outer end surface position of the inner layer heat-insulating barrel body (1), and the inner layer curing felt (6) is provided at the internal position of the inner layer heat-insulating barrel body (1).

2. The cured felt sandwich insulation barrel according to claim 1, characterized in that: The soft felt (5) is installed at the outer wall of the inner heat-insulating barrel body (1), and the soft felt (5) increases the heat-insulating effect of the inner heat-insulating barrel body (1).

3. The cured felt sandwich insulation barrel according to claim 2, characterized in that: The inner layer of cured felt (6) is located at the inner wall of the inner heat-insulating barrel body (1), and the inner layer of cured felt (6) can reduce heat loss.

4. The cured felt sandwich insulation barrel according to claim 1, characterized in that: The heater (3) is installed at an outer position of the outer heat-insulating barrel body (9), and the heater (3) heats the outer heat-insulating barrel body (9).

5. The cured felt sandwich insulation barrel according to claim 4, characterized in that: The heater (3) is mounted on the single crystal furnace via the lifting lug (2).

6. The cured felt sandwich insulation barrel according to claim 1, characterized in that: The heater (3) is movable at the upper end position of the bottom support seat (4).

7. The cured felt sandwich insulation barrel according to claim 6, characterized in that: The rotation of the heater (3) enables the lifting lug (2) to align with the mounting interface.

8. The cured felt sandwich insulation barrel according to claim 6, characterized in that: The movement of the heater (3) causes the sleeve rod (7) to move along the slide groove (8).

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