Heat shield of vacuum carbon tube furnace

Abstract

The utility model discloses a vacuum carbon tube furnace heat shield which comprises a heat insulation mechanism, the heat insulation mechanism is installed between an outer furnace and an inner furnace, the heat insulation mechanism comprises heat insulation cylinders, partition plates, glass wool, a suction head, a cooling pipe and a cooling assembly, the multiple heat insulation cylinders are detachably installed between the outer furnace and the inner furnace, and the two partition plates are symmetrically installed in each heat insulation cylinder; a heat insulation space is formed between the two partition plates, a cooling space is formed between each partition plate and the inner side wall of the heat insulation cylinder, the glass wool is installed in each cooling space, vacuum assemblies are arranged among the multiple suction heads, and the multiple cooling pipes are all installed in each cooling space. According to the vacuum carbon tube furnace heat shield, heat insulation work can be conveniently conducted between an outer furnace and an inner furnace through cooperation of the heat insulation barrel, the partition plate, the glass wool, the suction head, the cooling pipe, the cooling assembly and the like, meanwhile, the influence of factors such as scale on heat insulation is conveniently reduced, and therefore the heat insulation effect of the vacuum carbon tube furnace can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation screens, in particular to a heat insulation screen for a vacuum carbon tube furnace. Background Art

[0002] The vacuum carbon tube furnace is a vacuum furnace that uses high-purity graphite as a heating element. It can be used to sinter metal compounds, ceramics, inorganic compounds, etc. in a vacuum environment. It can also be used for heat treatment of metal materials. At present, vacuum carbon tube furnaces are usually used in the industry to prepare samarium metal. In the process of thermal reduction preparation of samarium metal, in order to prevent heat loss, a heat shield is generally set in the vacuum carbon tube furnace. Most of the existing heat shields are fixedly installed in the vacuum carbon tube furnace. After being damaged due to long-term high-temperature operation, it is not convenient to replace and disassemble;

[0003] After searching, the utility model with patent publication number CN219797928U discloses a vacuum furnace heat insulation screen with a disassembly function. Cooling water can be injected into the outer heat insulation screen through the inner heat dissipation holes. When the vacuum furnace is in use, the inner heat insulation screen can firstly insulate the inner furnace. The interior of the inner heat insulation screen is filled with glass wool. The glass wool has low thermal conductivity and good thermal insulation. The interior of the outer heat insulation screen is filled with cooling water. The cooling water can absorb part of the heat conducted through the inner heat insulation screen. Although it is convenient to perform a certain degree of insulation, after long-term cooling by water injection, more and more scale will be produced on the inner wall of the outer heat insulation screen, which is not convenient for cleaning. When the scale becomes thicker and thicker, it will affect the flow rate of water in the outer heat insulation screen and reduce the heat absorption efficiency of the cooling water, thereby affecting the overall insulation effect of the heat insulation screen. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a vacuum carbon tube furnace heat insulation screen to solve the problem in the background art that scale generated during water cooling and heat dissipation will reduce the overall heat insulation effect.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solutions: a vacuum carbon tube furnace heat shield, comprising a heat insulation mechanism, the heat insulation mechanism is installed between the outer furnace and the inner furnace, the heat insulation mechanism comprises a heat insulation cylinder, a partition plate, glass wool, a suction head, a cooling pipe and a cooling assembly;

[0008] The insulation tubes are provided in plurality, and the plurality of insulation tubes can be detachably installed between the outer furnace and the inner furnace;

[0009] The partition plates are provided in two numbers, and the two partition plates are symmetrically installed in each of the heat-insulating cylinders, a heat-insulating space is formed between the two partition plates, and a cooling space is formed between each of the partition plates and the inner side wall of the heat-insulating cylinder;

[0010] The glass wool is installed in each cooling space;

[0011] The suction head is arranged in each of the heat-insulating spaces, and a vacuum component is arranged between the plurality of suction heads;

[0012] The cooling pipe is provided in plurality, and the plurality of cooling pipes are installed in each cooling space;

[0013] The cooling assembly is arranged between the plurality of cooling pipes.

[0014] As a preferred technical solution of this application, the vacuum component includes:

[0015] A vacuum pump, the vacuum pump being installed at the bottom end of the outer furnace;

[0016] A connecting pipe, wherein the connecting pipe is provided in plurality, and the plurality of connecting pipes are all connected to the output end of the vacuum pump;

[0017] A supporting ring pipe, wherein the supporting ring pipe is connected between the plurality of connecting pipes;

[0018] The air intake pipe is provided in a plurality, and the plurality of air intake pipes are respectively connected between the support ring pipe and the plurality of suction heads.

[0019] As a further solution of the present application, the cooling assembly includes:

[0020] A cooling box, the cooling box being installed on one side of the outer furnace;

[0021] A blower, the blower being installed on the outer side wall of the cooling box;

[0022] An air blowing pipe, the air blowing pipe is connected to the output end of the hair dryer, and the cooling box is provided with a through opening matching the air blowing pipe;

[0023] A driven ring pipe, the driven ring pipe is connected to the air blowing pipe, and the driven ring pipe is connected to a plurality of fixed pipes;

[0024] The special-shaped annular tube is connected to each of the fixed tubes, and the special-shaped annular tube is connected to a plurality of adjacent cooling tubes.

[0025] On the basis of the above-mentioned solution, a positioning strip is fixedly connected to one side of the thermal insulation tube, and a positioning groove matching the positioning strip is provided on the other side of the thermal insulation tube.

[0026] It is further explained that the bottom ends of the plurality of heat-insulating cylinders are fixedly connected with fixing strips, and the inner bottom wall of the outer furnace is provided with fixing grooves matching with the fixing strips.

[0027] It should also be noted that a water inlet is provided on the top of the cooling box, and a box cover is installed at the water inlet.

[0028] (III) Beneficial effects

[0029] Compared with the prior art, the utility model provides a vacuum carbon tube furnace heat insulation screen, which has the following beneficial effects:

[0030] 1. In the present invention, through the cooperation of multiple positioning strips and multiple positioning grooves, multiple insulation tubes can be easily spliced, so that multiple insulation tubes can be installed and removed. Through the cooperation of multiple fixing strips and multiple fixing grooves, multiple insulation tubes can be stably installed between the outer furnace and the inner furnace. At the same time, multiple insulation tubes can be easily disassembled up and down separately, so that insulation tubes damaged by high temperature can be easily disassembled and replaced separately, thereby reducing replacement costs.

[0031] 2. In the utility model, two partition plates are used to divide the same heat-insulating cylinder into a heat-insulating space and a cooling space. Glass wool is provided in both cooling spaces on the same heat-insulating cylinder, so that the cooling space between the two partition plates can be heat-insulated. Moreover, through the cooperation of the cooling assembly and a plurality of cooling pipes, cold air can be passed through the plurality of cooling spaces to cool the partition plates and the heat-insulating cylinder, thereby reducing the influence of the heat of the inner furnace on the outer furnace. Meanwhile, the influence of scale generated during water cooling on the heat-insulating effect can be reduced through air cooling.

[0032] 3. In the utility model, through the vacuum assembly, multiple suction heads can be used to evacuate the interior of multiple insulation spaces, so as to form a vacuum in the multiple insulation spaces, thereby reducing the heat transfer in the insulation tube, and further facilitating the insulation work between the outer furnace and the inner furnace through the insulation tube;

[0033] 4. Therefore, compared with the prior art water cooling heat dissipation, the heat insulation screen of the vacuum carbon tube furnace has the problem that the scale generated during the water cooling heat dissipation will reduce the overall heat insulation effect. It is convenient to insulate the outer furnace and the inner furnace through the cooperation of the insulation tube, partition plate, glass wool, suction head, cooling pipe and cooling assembly, and at the same time it is convenient to reduce the influence of factors such as scale on the heat insulation, thereby improving the heat insulation effect of the vacuum carbon tube furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall three-dimensional structure of this application;

[0035] Figure 2This is a schematic diagram of the structure of the heat insulation cylinder, vacuum pump and positioning strip in this application;

[0036] Figure 3 This is a schematic cross-sectional structure diagram of the heat insulation tube, partition plate and glass wool of the present application;

[0037] Figure 4 This is a schematic diagram of the structure of the insulation tube and the fixing strip in this application.

[0038] In the figure: 1. outer furnace; 2. inner furnace; 3. insulation tube; 4. partition plate; 5. glass wool; 6. suction head; 7. cooling pipe; 8. vacuum pump; 9. connecting pipe; 10. supporting ring pipe; 11. suction pipe; 12. cooling box; 13. hair dryer; 14. blowing pipe; 15. driven ring pipe; 16. special-shaped ring pipe; 17. positioning strip; 18. fixing strip; 19. box cover. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] See also Figures 1 to 4 A vacuum carbon tube furnace insulation screen comprises an insulation mechanism, which is installed between an outer furnace 1 and an inner furnace 2. The insulation mechanism comprises an insulation tube 3, a partition plate 4, glass wool 5, a suction head 6, a cooling pipe 7 and a cooling assembly. The insulation tube 3 is provided in plurality, and the plurality of insulation tubes 3 can be detachably installed between the outer furnace 1 and the inner furnace 2. The partition plate 4 is provided in two, and the two partition plates 4 are symmetrically installed in each insulation tube 3. An insulation space is formed between the two partition plates 4, and a cooling space is formed between each partition plate 4 and the inner side wall of the insulation tube 3. The glass wool 5 is installed in each cooling space, and air outlets are provided at the plurality of cooling spaces to facilitate the discharge of cold air in the cooling space. The suction head 6 is provided in each insulation space, and a vacuum assembly is provided between the plurality of suction heads 6. The cooling pipe 7 is provided in plurality, and the plurality of cooling pipes 7 are installed in each cooling space. The cooling assembly is provided between the plurality of cooling pipes 7.

[0041] See also Figures 1 to 4The vacuum assembly includes a vacuum pump 8, a connecting pipe 9, a supporting ring pipe 10 and an air suction pipe 11. The vacuum pump 8 is installed at the bottom end of the outer furnace 1. The connecting pipe 9 is provided in plurality, and the plurality of connecting pipes 9 are all connected to the output end of the vacuum pump 8. The supporting ring pipe 10 is connected between the plurality of connecting pipes 9. The air suction pipe 11 is provided in plurality, and the plurality of air suction pipes 11 are respectively connected between the supporting ring pipe 10 and the plurality of suction heads 6. By starting the vacuum pump 8, the plurality of connecting pipes 9 can suction the plurality of air suction pipes 11 through the supporting ring pipe 10, so as to suction the plurality of heat-insulating spaces through the plurality of suction heads 6, thereby forming a vacuum in the heat-insulating space, which is convenient for reducing the heat transfer of the inner furnace 2.

[0042] See also Figures 1 to 4 The cooling assembly includes a cooling box 12, a blower 13, an air blowing pipe 14, a driven ring pipe 15 and a special-shaped ring pipe 16. The cooling box 12 is installed on one side of the outer furnace 1, and the blower 13 is installed on the outer side wall of the cooling box 12. The blower pipe 14 is connected to the output end of the blower 13, and a through hole matching the blower pipe 14 is opened on the cooling box 12. The driven ring pipe 15 is connected to the blower pipe 14, and the driven ring pipe 15 is connected to a plurality of fixed pipes. The special-shaped ring pipe 16 is connected to each fixed pipe, and the special-shaped ring pipe 16 is connected to a plurality of adjacent cooling pipes 7. A water inlet is opened on the top of the cooling box 12, and a box cover 19 is installed at the water inlet. By opening the box cover 19, it is convenient to pass the water inlet for cooling Cooling water is added to the box 12; by starting the hair dryer 13, it is convenient for the hair dryer 13 to blow air to the driven ring tube 15 through the blowing pipe 14. At the same time, the blowing pipe 14 is connected to the cooling box 12. Cooling water is provided in the cooling box 12, and the part of the blowing pipe 14 located in the cooling box 12 can be cooled, so as to cool the gas in the blowing pipe 14. After the cold air enters the multiple fixed tubes through the driven ring tube 15, it can continue to enter the multiple cooling tubes 7 through the multiple special-shaped ring tubes 16. Through the cooperation of the multiple cooling tubes 7, it is convenient to blow cold wind to the multiple cooling spaces, so as to blow cold air to the partition plate 4, glass wool 5 and insulation tube 3, thereby reducing the influence of the heat of the inner furnace 2 on the outer furnace 1.

[0043] See also Figures 1 to 4 A positioning strip 17 is fixedly connected to one side of the insulation tube 3, and a positioning groove matching the positioning strip 17 is opened on the other side of the insulation tube 3; through the cooperation of multiple positioning strips 17 and multiple positioning grooves, two adjacent insulation tubes 3 can be spliced ​​to facilitate the installation and disassembly of multiple insulation tubes 3, thereby facilitating the replacement of a single insulation tube 3.

[0044] See also Figures 1 to 4The bottom ends of the multiple insulation tubes 3 are fixedly connected with fixing strips 18, and the inner bottom wall of the outer furnace 1 is provided with fixing grooves matching the fixing strips 18; through the cooperation of the multiple fixing strips 18 and the multiple fixing grooves, the multiple insulation tubes 3 can be stably installed between the outer furnace 1 and the inner furnace 2, and at the same time, it is convenient to disassemble the insulation tubes 3 between the outer furnace 1 and the inner furnace 2.

[0045] To sum up, when the vacuum carbon tube furnace is working, the vacuum pump 8 sucks air to the multiple connecting tubes 9, so that the connecting tubes 9 suck air to the multiple suction tubes 11 through the supporting ring tube 10, so that the multiple suction heads 6 can suck air into the multiple insulation spaces, so that the insulation spaces can be vacuumed. At the same time, cooling water is added to the cooling box 12, and the blower 13 blows air to the blowing tube 14, so that cold air passes through the driven ring tube 15, multiple fixed tubes and multiple special-shaped ring tubes 16 into the multiple cooling tubes 7, so that through the cooperation of the multiple cooling tubes 7, cold air can be blown to the multiple cooling spaces, and cold air can be blown to the partition plate 4, glass wool 5 and insulation tube 3, so as to reduce the influence of the heat of the inner furnace 2 on the outer furnace 1.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum carbon tube furnace heat shield, characterized in that: The invention comprises a heat insulation mechanism, wherein the heat insulation mechanism is installed between an outer furnace (1) and an inner furnace (2), and the heat insulation mechanism comprises: A heat-insulating tube (3), wherein the heat-insulating tube (3) is provided in a plurality, and the plurality of heat-insulating tubes (3) can be detachably installed between the outer furnace (1) and the inner furnace (2); A partition plate (4), wherein two partition plates (4) are provided, and the two partition plates (4) are symmetrically installed in each of the heat-insulating cylinders (3), a heat-insulating space is formed between the two partition plates (4), and a cooling space is formed between each of the partition plates (4) and the inner side wall of the heat-insulating cylinder (3); Glass wool (5), the glass wool (5) being installed in each of the cooling spaces; A suction head (6), wherein the suction head (6) is arranged in each of the heat-insulating spaces, and a vacuum component is arranged between the plurality of suction heads (6); A cooling pipe (7), wherein the cooling pipe (7) is provided in plurality, and each of the plurality of cooling pipes (7) is installed in each of the cooling spaces; A cooling component is arranged between the plurality of cooling pipes (7).

2. A vacuum carbon tube furnace heat shield according to claim 1, characterized in that: The vacuum assembly comprises: A vacuum pump (8), wherein the vacuum pump (8) is installed at the bottom end of the outer furnace (1); A connecting pipe (9), wherein the connecting pipe (9) is provided in a plurality, and the plurality of connecting pipes (9) are all connected to the output end of the vacuum pump (8); A supporting ring pipe (10), wherein the supporting ring pipe (10) is connected between the plurality of connecting pipes (9); An air suction pipe (11), wherein the air suction pipe (11) is provided in plurality, and the plurality of air suction pipes (11) are respectively connected between the support ring pipe (10) and the plurality of suction heads (6).

3. A vacuum carbon tube furnace heat shield according to claim 2, characterized in that: The cooling assembly comprises: A cooling box (12), the cooling box (12) being installed on one side of the outer furnace (1); a blower (13), the blower (13) being mounted on an outer side wall of the cooling box (12); An air blowing pipe (14), the air blowing pipe (14) being connected to the output end of the blower (13), and the cooling box (12) being provided with a through opening matching the air blowing pipe (14); A driven annular tube (15), the driven annular tube (15) being connected to the air blowing tube (14), and the driven annular tube (15) being connected to a plurality of fixed tubes; A special-shaped annular tube (16), wherein the special-shaped annular tube (16) is connected to each of the fixed tubes, and the special-shaped annular tube (16) is connected to a plurality of adjacent cooling tubes (7).

4. A vacuum carbon tube furnace heat shield according to claim 3, characterized in that: A positioning strip (17) is fixedly connected to one side of the heat insulating tube (3), and a positioning groove matching the positioning strip (17) is provided on the other side of the heat insulating tube (3).

5. A vacuum carbon tube furnace heat shield according to claim 4, characterized in that: The bottom ends of the plurality of heat-insulating cylinders (3) are fixedly connected to fixing strips (18), and the inner bottom wall of the outer furnace (1) is provided with fixing grooves matching the fixing strips (18).

6. A vacuum carbon tube furnace heat shield according to claim 5, characterized in that: A water inlet is provided at the top of the cooling box (12), and a box cover (19) is installed at the water inlet.

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