Safe and efficient vacuum annealing furnace

Abstract

The utility model relates to the technical field of annealing furnaces, in particular to a safe and efficient vacuum annealing furnace which comprises a furnace body, an annular cavity is formed in the furnace body, a quartz tube is installed in the annular cavity, and an electric heating wire is installed on the outer side of the quartz tube in the furnace body in a sleeved mode. A supporting plate used for storing annealing materials is fixedly welded to the side wall, close to the quartz tube, of the tube cover, a sliding rod used for driving the tube cover to be opened and closed is slidably connected to the interior of the furnace body through a T-shaped sliding groove formed in the lower end, and a vacuum pump is installed at the end, away from the opening, of the furnace body. According to the safe and efficient vacuum annealing furnace, an annealing material can be rapidly and efficiently heated through the arranged electric heating wire, meanwhile, the annealing material can be conveniently placed through the arranged sliding rod, threaded rod and supporting plate, and scalding caused by touching the heating device in the placing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a safe and efficient vacuum annealing furnace. Background Art

[0002] Annealing is a process often used in the processing of metal materials. It mainly refers to the heat treatment process of heating the metal material in a closed container and keeping it at high temperature for a period of time, and then slowly cooling it. The main purpose is to release the internal stress of the material and increase the ductility and toughness of the material. Vacuum annealing furnace is mainly suitable for stainless steel deep drawing parts such as plumbing equipment, water expansion parts, pins, medical equipment, stainless steel nails, stainless steel screws, riveted parts, stainless steel bearings, watch cases, watch straps, knives, micro shafts, self-drilling, tableware and other stainless steel products under the control of protective atmosphere for continuous bright annealing, solid solution, demagnetization and stainless steel quenching.

[0003] The utility model patent with authorization announcement number CN215050534U discloses a vacuum annealing furnace, including: a base, a furnace body, a first thermocouple, a controller and multiple heating rods. The furnace body is horizontally arranged on the base, and the multiple heating rods are arranged on the side panels of the furnace body and extend into the furnace chamber of the furnace body, so that the multiple heating rods are spaced around the inner wall of the furnace body. The furnace body is provided with a connecting joint connected to a vacuum pump, and the first thermocouple is arranged on the side panels and extends into the furnace chamber of the furnace body.

[0004] Although this technical solution uses a vacuum pump to form a vacuum negative pressure in the furnace of the furnace body, the workpiece can maintain a bright outer surface after annealing in the furnace; multiple heating rods are arranged around the inner wall of the furnace to make the temperature in the furnace more uniform and ensure the annealing quality of the workpiece. However, the heating method of multiple heating rods under this technical solution is not uniform and fast enough, and the annealing material is not easy to place and is easy to get burned. In view of this, we propose a safe and efficient vacuum annealing furnace. Utility Model Content

[0005] In view of the above defects or deficiencies in the prior art, it is desired to provide a safe and efficient vacuum annealing furnace.

[0006] In the first aspect, the present application provides a safe and efficient vacuum annealing furnace, comprising a furnace body, an annular cavity is opened inside the furnace body, a quartz tube is installed in the annular cavity, a heating wire is installed on the outer side of the quartz tube and sleeved inside the furnace body, a tube cover is provided at the opening of the quartz tube, a support plate for storing annealing materials is welded and fixed to the side wall of the tube cover close to the quartz tube, a sliding rod for driving the tube cover to open and close is slidably connected to the furnace body through a T-shaped slide groove opened at the lower end, a vacuum pump is installed at the end of the furnace body away from the opening, the vacuum pump is connected to an exhaust pipe, and the end of the exhaust pipe passes through the side wall of the furnace body and is connected to the inside of the quartz tube.

[0007] According to the technical solution provided in the embodiment of the present application, the furnace body is provided with a furnace cover at the opening on the same side as the opening of the quartz tube, a hinge seat is welded and fixed to the side wall at the top end of the furnace body at the opening, a hinge protrusion matched with the hinge seat is integrally formed on the outer side wall of the furnace cover, the hinge protrusion is hinged to the hinge seat through a hinge column, and a handle is welded and fixed to the arc outer side wall of the furnace cover on the side away from the hinge protrusion.

[0008] According to the technical solution provided in the embodiment of the present application, a threaded rod is rotatably connected in the T-shaped slide groove in the furnace body, and a motor is installed on the outside of the side wall of the furnace body away from its opening. The output shaft of the motor passes through the side wall of the furnace body and is coaxially connected to the threaded rod.

[0009] According to the technical solution provided in the embodiment of the present application, the sliding rod includes a T-shaped slider that is compatible with the T-shaped slide groove, a threaded hole that is compatible with the threaded rod is opened in the middle of the T-shaped slider, a horizontally arranged cross bar is integrally formed at the top of the T-shaped slider, a vertically placed vertical bar is integrally formed at the top of the cross bar away from the T-shaped slider, a welding hole is opened at the top of the vertical bar, and a welding block that is compatible with the welding hole is provided in the middle of the outer wall of the end of the pipe cover away from the support plate, and the welding block is clamped in the welding hole and welded fixed.

[0010] According to the technical solution provided in the embodiment of the present application, a mounting plate for installing the vacuum pump is welded and fixed on the side wall of the furnace body away from its open end, the vacuum pump is fixed to the mounting plate by bolts, and an electromagnetic valve for controlling the on and off of the exhaust pipe is provided on the exhaust pipe.

[0011] According to the technical solution provided in the embodiment of the present application, the sum of the length of the quartz tube and the thickness of the tube cover is less than the depth of the annular cavity, the length of the support plate is less than the internal depth of the quartz tube, and the width of the support plate is less than the inner diameter of the quartz tube.

[0012] According to the technical solution provided in the embodiment of the present application, the threaded rod is threadedly connected to the threaded hole, and when the T-shaped slider slides to the innermost side of the T-shaped slot, the tube cover fits tightly against the quartz tube, and when the T-shaped slider slides to the outermost side of the T-shaped slot, the support plate is completely exposed.

[0013] In summary, the technical solution specifically discloses a safe and efficient vacuum annealing furnace, which includes a furnace body, an annular cavity is opened inside the furnace body, a quartz tube is installed in the annular cavity, a heating wire is installed on the outer side of the quartz tube and sleeved inside the furnace body, a support plate for storing annealing materials is welded and fixed to a side wall of the tube cover close to the quartz tube, a sliding rod for driving the tube cover to open and close is slidably connected to the furnace body through a T-shaped slide groove opened at the lower end, and a vacuum pump is installed at the end of the furnace body away from the opening; the annealing material can be heated quickly and efficiently by the provided heating wire, and the provided sliding rod, threaded rod and support plate facilitate the placement of the annealing material to avoid burns caused by touching the heating device during placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure in the utility model;

[0017] Figure 3 It is a cross-sectional view of the structure in the utility model;

[0018] Figure 4 It is an exploded view of the structure in the utility model;

[0019] Figure 5 It is a schematic diagram of the sliding rod structure in the utility model;

[0020] Figure 6 This is a cross-sectional view of the furnace structure in the utility model Figure 1 ;

[0021] Figure 7 This is a cross-sectional view of the furnace structure in the utility model Figure 2 .

[0022] In the figure:

[0023] 1. furnace body; 11. annular cavity; 12. T-shaped slide groove; 13. mounting plate; 14. hinge seat; 15. hinge column; 16. furnace cover; 161. hinged protrusion; 162. handle;

[0024] 2. Quartz tube;

[0025] 3. Heating wire;

[0026] 4. pipe cover; 41. support plate; 42. welding block;

[0027] 5. Sliding rod; 51. T-shaped slider; 511. Threaded hole; 52. Crossbar; 53. Vertical bar; 54. Welding hole;

[0028] 6. Threaded rod;

[0029] 7. Motor;

[0030] 8. Vacuum pump;

[0031] 9. Exhaust pipe; 91. Solenoid valve. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] See also Figure 1-Figure 7 A safe and efficient vacuum annealing furnace comprises a furnace body 1, an annular cavity 11 is provided inside the furnace body 1, a quartz tube 2 is installed in the annular cavity 11, an electric heating wire 3 is installed on the outer side of the quartz tube 2 and sleeved inside the furnace body 1, a tube cover 4 is provided at the opening of the quartz tube 2, a support plate 41 for storing annealing materials is welded and fixed to a side wall of the tube cover 4 close to the quartz tube 2, a sliding rod 5 for driving the tube cover 4 to open and close is slidably connected through a T-shaped slide groove 12 provided at the lower end of the furnace body 1, a vacuum pump 8 is installed at the end of the furnace body 1 away from the opening, the vacuum pump 8 is connected to an exhaust pipe 9, and the end of the exhaust pipe 9 passes through the side wall of the furnace body 1 and is connected to the inside of the quartz tube 2.

[0035] In the present embodiment, a furnace cover 16 is provided at the opening of the furnace body 1 on the same side as the opening of the quartz tube 2, and a hinge seat 14 is welded and fixed to the top side wall of the furnace body 1 at the opening, and a hinge protrusion 161 adapted to the hinge seat 14 is integrally formed on the outer wall of the furnace cover 16, and the hinge protrusion 161 is hinged to the hinge seat 14 through a hinge column 15, and a handle 162 is welded and fixed to the arc outer wall of the furnace cover 16 on the side away from the hinge protrusion 161; the design of the handle 162 facilitates the opening and closing of the furnace cover 16.

[0036] Furthermore, a threaded rod 6 is rotatably connected in the T-shaped slide groove 12 in the furnace body 1, and a motor 7 is installed on the outer side of the side wall of the furnace body 1 away from its opening. The output shaft of the motor 7 penetrates the side wall of the furnace body 1 and is coaxially connected to the threaded rod 6; the motor 7 provides power for the rotation of the threaded rod 6.

[0037] Secondly, the sliding rod 5 includes a T-shaped slider 51 adapted to the T-shaped slide groove 12, a threaded hole 511 adapted to the threaded rod 6 is opened in the middle of the T-shaped slider 51, a horizontally arranged cross bar 52 is integrally formed at the top of the T-shaped slider 51, and a vertically placed vertical rod 53 is integrally formed at the top of the end of the cross bar 52 away from the T-shaped slider 51, and a welding hole 54 is opened at the top of the vertical rod 53, and a welding block 42 adapted to the welding hole 54 is provided in the middle of the outer wall of the end of the pipe cover 4 away from the support plate 41, and the welding block 42 is clamped in the welding hole 54 and welded fixed; the matching threaded hole 511 allows the sliding rod 5 to slide back and forth along the T-shaped slide groove 12 when the threaded rod 6 rotates, and the matching welding hole 54 and welding block 42 facilitate the welding and fixing of the sliding rod 5 and the pipe cover 4.

[0038] Furthermore, a mounting plate 13 for mounting a vacuum pump 8 is welded and fixed on the side wall of the furnace body 1 away from its open end. The vacuum pump 8 is fixed to the mounting plate 13 by bolts, and a solenoid valve 91 for controlling the on / off of the exhaust pipe 9 is provided. The vacuum pump 8 draws air from the quartz tube 2 through the exhaust pipe 9 to create a vacuum environment, and the solenoid valve 91 is used to control the on / off of the exhaust pipe 9.

[0039] Secondly, the sum of the length of the quartz tube 2 and the thickness of the tube cover 4 is less than the depth of the annular cavity 11, the length of the support plate 41 is less than the internal depth of the quartz tube 2, and the width of the support plate 41 is less than the inner diameter of the quartz tube 2; the size of the support plate 41 is designed so that it can be fully extended into the quartz tube 2.

[0040] Furthermore, the threaded rod 6 is threadedly connected to the threaded hole 511, and when the T-shaped slider 51 slides to the innermost side of the T-shaped slot 12, the tube cover 4 fits tightly against the quartz tube 2, and when the T-shaped slider 51 slides to the outermost side of the T-shaped slot 12, the support plate 41 is completely exposed; the tight fit makes the quartz tube 2 in a sealed state, and the support plate 41 is completely exposed, which is convenient for placing the annealing material.

[0041] Working principle: When the safe and efficient vacuum annealing furnace of the utility model is in use, the user first opens the furnace cover 16 through the handle 162, then starts the motor 7 to drive the threaded rod 6 to rotate, so that the sliding rod 5 slides toward the opening along the T-shaped slide groove 12, drives the tube cover 4 to separate from the tube mouth of the quartz tube 2, so that the support plate 41 is exposed, and then the annealing material is placed on the support plate 41, and the motor 7 is started in the reverse direction to drive the threaded rod 6 to rotate, so that the sliding rod 5 slides inward along the T-shaped slide groove 12, and the support plate 41 is extended into the quartz tube 2, and the tube cover 4 is tightly fitted with the tube mouth of the quartz tube 2, and the furnace cover 16 is closed, and finally the vacuum pump 8 is started to extract the air in the quartz tube 2, and the electric heating wire 3 is heated by electricity.

[0042] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features disclosed in the present application but not limited to those with similar functions.

Claims

1. A safe and efficient vacuum annealing furnace, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with an annular cavity (11) inside, a quartz tube (2) is installed in the annular cavity (11), an electric heating wire (3) is installed on the outer side of the quartz tube (2) and sleeved inside the furnace body (1), a tube cover (4) is provided at the opening of the quartz tube (2), a support plate (41) for storing annealing materials is welded and fixed to a side wall of the tube cover (4) close to the quartz tube (2), a sliding rod (5) for driving the tube cover (4) to open and close is slidably connected to the furnace body (1) through a T-shaped slide groove (12) provided at the lower end, and a vacuum pump (8) is installed at the end of the furnace body (1) away from the opening, the vacuum pump (8) is connected to an exhaust pipe (9), and the end of the exhaust pipe (9) passes through the side wall of the furnace body (1) and is connected to the inside of the quartz tube (2).

2. The safe and efficient vacuum annealing furnace according to claim 1, characterized in that: The furnace body (1) is provided with a furnace cover (16) at an opening on the same side as the opening of the quartz tube (2); a hinge seat (14) is welded and fixed to the top side wall of the furnace body (1) at the opening; a hinge protrusion (161) adapted to the hinge seat (14) is integrally formed on the outer side wall of the furnace cover (16); the hinge protrusion (161) is hinged to the hinge seat (14) via a hinge column (15); and a handle (162) is welded and fixed to the arc outer side wall of the furnace cover (16) on a side away from the hinge protrusion (161).

3. The safe and efficient vacuum annealing furnace according to claim 1, characterized in that: A threaded rod (6) is rotatably connected in the T-shaped slide groove (12) in the furnace body (1), and a motor (7) is installed on the outer side of the side wall of the furnace body (1) away from its opening. The output shaft of the motor (7) passes through the side wall of the furnace body (1) and is coaxially connected to the threaded rod (6).

4. The safe and efficient vacuum annealing furnace according to claim 3 is characterized in that: The sliding rod (5) comprises a T-shaped sliding block (51) matched with the T-shaped sliding groove (12); a threaded hole (511) matched with the threaded rod (6) is provided in the middle of the T-shaped sliding block (51); a horizontally arranged cross bar (52) is integrally formed at the top of the T-shaped sliding block (51); a vertically arranged vertical bar (53) is integrally formed at the top of one end of the cross bar (52) away from the T-shaped sliding block (51); a welding hole (54) is provided at the top of the vertical bar (53); a welding block (42) matched with the welding hole (54) is provided in the middle of the outer wall of one end of the pipe cover (4) away from the supporting plate (41); the welding block (42) is clamped in the welding hole (54) and fixed by welding.

5. The safe and efficient vacuum annealing furnace according to claim 1 is characterized in that: A mounting plate (13) for mounting the vacuum pump (8) is welded and fixed on a side wall of the furnace body (1) away from the open end thereof; the vacuum pump (8) is fixed to the mounting plate (13) by bolts; and a solenoid valve (91) for controlling the on / off of the exhaust pipe (9) is provided on the exhaust pipe (9).

6. The safe and efficient vacuum annealing furnace according to claim 1, characterized in that: The sum of the length of the quartz tube (2) and the thickness of the tube cover (4) is less than the depth of the annular cavity (11), the length of the support plate (41) is less than the internal depth of the quartz tube (2), and the width of the support plate (41) is less than the internal diameter of the quartz tube (2).

7. The safe and efficient vacuum annealing furnace according to claim 4, characterized in that: The threaded rod (6) is threadedly connected to the threaded hole (511); when the T-shaped slider (51) slides to the innermost side of the T-shaped slide groove (12), the tube cover (4) is tightly fitted to the quartz tube (2); when the T-shaped slider (51) slides to the outermost side of the T-shaped slide groove (12), the support plate (41) is completely exposed.

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