Heat treatment vacuum furnace

Abstract

The utility model relates to the field of vacuum furnaces, in particular to a heat treatment vacuum furnace which comprises a vacuum furnace main body used for carrying out vacuum heat treatment on workpieces, and an outer door arranged on one side of the vacuum furnace main body and used for sealing the vacuum furnace main body. According to the heat treatment vacuum furnace, through the arrangement of the vacuum furnace main body, the partition plate, the circulating pipe, the water inlet, the water outlet, the driving motor and the fan, after a workpiece is placed in the vacuum furnace main body for heat treatment, cooling water is poured into the circulating pipe from the water inlet, and the driving motor is started to drive the fan to blow air to the surface of the circulating pipe; and cold air generated by the circulating pipe penetrates through the partition plate and enters the vacuum furnace main body, so that the surface of a workpiece is cooled, the workpiece cooling speed is increased, the heat treatment quality is improved, meanwhile, the working efficiency is further improved, workers are prevented from opening the outer door, and the working efficiency is improved. And hot air in the vacuum furnace main body can be quickly discharged, so that workers are scalded.

Description

Technical Field

[0001] The utility model relates to the field of vacuum furnace treatment, in particular to a heat treatment vacuum furnace. Background Art

[0002] A vacuum furnace uses a vacuum system in a specific space called a furnace chamber to discharge some of the materials in the furnace chamber, making the pressure in the furnace chamber less than a standard atmospheric pressure. The space in the furnace chamber is thus in a vacuum state. Its main functions are vacuum quenching, vacuum brazing, vacuum sintering and vacuum magnetization.

[0003] After searching, a utility model vacuum furnace for heat treatment with publication number CN215925020U is found, which includes a furnace body, a rear support plate, a furnace cover, a front support plate, an oil cylinder, a strip groove, an L-shaped plate, a supporting plate, a first movable connecting member, a second movable connecting member, an observation window, an air guide, an annular rubber sheet, an annular groove, a silicone ring sheet and a circular hole. The structure of the application is reasonable, and the supporting plate connected by the L-shaped plate can be raised, which is conducive to moving the workpiece to the front of the furnace mouth, and convenient for the workpiece to be pushed into the furnace body later. The annular groove is in close contact with the annular rubber sheet located at the furnace mouth through the notch of the annular groove to achieve a sealing effect. At the same time, under the vacuuming action in the furnace body, the annular groove is connected with the furnace body by the air guide, and the annular groove can be evacuated and the annular rubber sheet can be adsorbed and fixed, so as to achieve the effect of fixing and sealing the furnace cover.

[0004] In the existing vacuum furnaces for heat treatment, the heat treatment workpiece is usually cooled only by the gas blown by the fan during use, and the gas blown by the fan is usually at room temperature, resulting in a slow cooling speed of the workpiece. The vacuum furnace for heat treatment in the above-mentioned comparative case lacks a cooling design, resulting in the need for the workpiece itself to be cooled. At the same time, when the staff opens the outer door, the hot air inside the furnace body will be quickly discharged, which can easily scald the staff and make it inconvenient to take the workpiece.

[0005] Therefore, it is necessary to invent a heat treatment vacuum furnace to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a heat treatment vacuum furnace to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a heat treatment vacuum furnace, comprising a vacuum furnace body, for performing vacuum heat treatment on a workpiece;

[0008] An outer door is arranged on one side of the vacuum furnace body and is used to close the vacuum furnace body;

[0009] The door cover is fixed at the front end of the vacuum furnace body and is used to lock with the outer door;

[0010] The heating ring is arranged inside the vacuum furnace body and is used for heating the workpiece;

[0011] A placement plate is fixed inside the high temperature resistant bracket and is used to place the workpiece;

[0012] A fan is arranged at the rear side of the vacuum furnace body, and is used to cool down the workpiece after the heat treatment. A partition is fixedly installed at the rear side of the vacuum furnace body. A circulation pipe is fixedly installed inside the vacuum furnace body. A water inlet is provided at one end of the circulation pipe, and a water outlet is provided at the other end of the circulation pipe. A driving motor is fixedly arranged at the rear of the vacuum furnace body, and the driving motor is fixedly connected to the fan.

[0013] The vacuum pump and the pressure gauge are respectively arranged at the upper end of the vacuum furnace body, and are used to perform vacuum treatment on the inside of the vacuum furnace body.

[0014] Preferably, a fixing frame is fixedly installed on one side of the vacuum furnace body, a connecting frame is movably connected to one side of the fixing frame, the outer door is movably connected to one side of the connecting frame, a cylinder is provided on the outer side of the outer door, a handle is fixedly installed on the front side of the outer door, and limit blocks are fixedly installed around the outer door.

[0015] Preferably, the outer door is movably connected to the connecting frame, and the cylinder is arranged between the connecting frame and the outer door.

[0016] Preferably, a limiting groove is provided on one side surface of the door frame, and a sealing member is provided inside the door frame.

[0017] Preferably, a high temperature resistant bracket is fixedly installed inside the vacuum furnace body, high temperature resistant slide rails are fixedly installed on both sides above the high temperature resistant bracket, and a movable bracket is movably connected inside the high temperature resistant slide rail.

[0018] Preferably, the circulation pipe is fixedly connected to the vacuum furnace body, and the circulation pipe is arranged in a serpentine shape.

[0019] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0020] 1. Through the arrangement of the vacuum furnace body, partition, circulation pipe, water inlet, water outlet, drive motor and fan, after the workpiece is placed in the vacuum furnace body for heat treatment, cooling water is poured into the circulation pipe from the water inlet, and the drive motor is started to drive the fan to blow air on the surface of the circulation pipe, so that the cold air generated by the circulation pipe passes through the partition and enters the vacuum furnace body, thereby cooling the surface of the workpiece. This not only improves the cooling speed of the workpiece and the quality of heat treatment, but also further improves the work efficiency, and also prevents the staff from opening the outer door, and the hot air inside the vacuum furnace body will be quickly discharged, causing scalding of the staff;

[0021] 2. Through the arrangement of the vacuum furnace body, fixing frame, connecting frame, outer door, cylinder, handle, limit block, door cover, limit groove and sealing member, the limit block on the outer door is aligned with the limit groove on the door cover, and the outer door is pushed to rotate in the door cover by starting the cylinder, so that the outer door and the vacuum furnace body can be locked, which not only saves manpower to manually lock the outer door, but also strengthens the sealing and firmness of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of the vacuum furnace of the utility model;

[0025] Figure 3 This is a schematic diagram of the outer door structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the vacuum furnace main body of the utility model;

[0027] Figure 5 This is a schematic diagram of the placement plate structure of the utility model.

[0028] Description of reference numerals:

[0029] 1. Vacuum furnace body; 2. Fixed frame; 3. Connecting frame; 4. Outer door; 5. Cylinder; 6. Handle; 7. Limit block; 8. Door cover; 9. Limit groove; 10. Seal; 11. Heating ring; 12. High temperature resistant bracket; 13. High temperature resistant slide rail; 14. Movable bracket; 15. Placement plate; 16. Partition; 17. Circulation pipe; 18. Water inlet; 19. Water outlet; 20. Driving motor; 21. Fan; 22. Vacuum pump; 23. Barometer. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The utility model provides Figure 1-5 The heat treatment vacuum furnace shown comprises a vacuum furnace body 1, which is used for performing vacuum heat treatment on a workpiece;

[0032] An outer door 4 is provided on one side of the vacuum furnace body 1 and is used to close the vacuum furnace body 1;

[0033] The door cover 8 is fixed to the front end of the vacuum furnace body 1 and is used to lock with the outer door 4;

[0034] The heating ring 11 is arranged inside the vacuum furnace body 1 and is used for heating the workpiece;

[0035] A placement plate 15 is fixed inside the high temperature resistant bracket 12 and is used to place workpieces;

[0036] A fan 21 is arranged at the rear side of the vacuum furnace body 1 and is used to cool down the workpiece after heat treatment. A partition 16 is fixedly installed at the rear side of the vacuum furnace body 1. A circulation pipe 17 is fixedly installed inside the vacuum furnace body 1. A water inlet 18 is opened at one end of the circulation pipe 17, and a water outlet 19 is opened at the other end of the circulation pipe 17. A driving motor 20 is fixedly arranged at the rear of the vacuum furnace body 1, and the driving motor 20 is fixedly connected to the fan 21.

[0037] The vacuum pump 22 and the barometer 23 are respectively arranged at the upper end of the vacuum furnace body 1, and are used to extract vacuum treatment from the inside of the vacuum furnace body 1. After the workpiece is placed in the vacuum furnace body 1 for heat treatment, cooling water is poured into the circulation pipe 17 from the water inlet 18, and the driving motor 20 is started to drive the fan 21 to blow air on the surface of the circulation pipe 17, so that the cold air generated by the circulation pipe 17 passes through the partition 16 and enters the vacuum furnace body 1, thereby cooling the surface of the workpiece. This not only improves the cooling speed of the workpiece and the quality of heat treatment, but also further improves the work efficiency, and also prevents the staff from opening the outer door 4, and the hot air inside the vacuum furnace body 1 will be quickly discharged, causing scalding of the staff.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, a fixing frame 2 is fixedly installed on one side of the vacuum furnace body 1, and a connecting frame 3 is movably connected to one side of the fixing frame 2. The outer door 4 is movably connected to one side of the connecting frame 3. A cylinder 5 is provided on the outer side of the outer door 4, and a handle 6 is fixedly installed on the front side of the outer door 4. Limiting blocks 7 are fixedly installed around the outer door 4. The connection method between the outer door 4 and the fixing frame 2 is used to facilitate the staff to flip and open the outer door 4 with less effort. At the same time, a movable shaft is provided between the outer door 4 and the connecting frame 3, which can drive the outer door 4 to rotate and lock.

[0039] like Figure 1 , Figure 2 and Figure 3As shown, the outer door 4 is movably connected to the connecting frame 3, and the cylinder 5 is arranged between the connecting frame 3 and the outer door 4. The cylinder 5 can automatically push the outer door 4 to rotate and lock it in the door frame 8, thereby improving the firmness and sealing between the two.

[0040] like Figure 2 As shown, a limiting groove 9 is provided on one side surface of the door cover 8, and a sealing member 10 is provided inside the door cover 8. The limiting groove 9 provided inside the door cover 8 can cooperate with the limiting block 7 of the outer door 4 for locking, thereby enhancing the sealing and firmness of the entire device.

[0041] like Figure 4 and Figure 5 As shown, a high temperature resistant bracket 12 is fixedly installed inside the vacuum furnace body 1, and high temperature resistant slide rails 13 are fixedly installed on both sides above the high temperature resistant bracket 12. The interior of the high temperature resistant slide rail 13 is movably connected with a movable bracket 14. The workpiece is placed on the placement plate 15. The high temperature resistant slide rail 13 can be used to slide the movable bracket 14 and the placement plate 15 into the vacuum furnace body 1, so that the staff can conveniently transport them into the vacuum furnace body 1.

[0042] like Figure 1 and Figure 4 As shown, the circulation pipe 17 is fixedly connected to the vacuum furnace body 1. The circulation pipe 17 is arranged in a serpentine shape. Cooling water is poured into the circulation pipe 17 to circulate the cooling water. Then, the low temperature on the surface of the circulation pipe 17 is blown into the vacuum furnace body 1 by the fan 21 to cool the workpiece.

[0043] The working principle of the utility model is as follows: firstly, the external power supply is turned on, and then the movable bracket 14 is pulled out from the high temperature resistant bracket 12, and the workpiece is neatly placed on the placement plate 15. After placing, the high temperature resistant bracket 12 and the placement plate 15 are pushed into the vacuum furnace body 1 by the high temperature resistant slide rail 13. Next, the handle 6 of the outer door 4 is held and turned over on the fixed frame 2, and the limit block 7 outside the outer door 4 is aligned with the limit groove 9 on the door cover 8. Then, the cylinder 5 switch is turned on to drive the power source of the hydraulic pump. The hydraulic pump presses the hydraulic oil into the cylinder 5, thereby pushing the outer door 4 to rotate on the connecting frame 3, so that the outer door 4 rotates and locks in the door cover 8, thereby improving the sealing firmness between the vacuum furnace body 1 and the outer door 4. After that, after turning on the vacuum pump 22 switch, the inner cavity of the vacuum furnace body 1 is evacuated. After the vacuum is evacuated, the vacuum pump 22 switch is turned off, and then turned on The heating coil 11 is switched on to heat the inner cavity of the vacuum furnace body 1, so that the workpiece is heat treated in the inner cavity of the vacuum furnace body 1. When the heat treatment is completed, the vacuum furnace body 1 is switched off, and cooling water is poured into the circulation pipe 17 from the water inlet 18. Next, the drive motor 20 is switched on. When the current passes through the motor coil, a magnetic field is generated, causing the rotor of the motor to generate magnetic force, thereby generating a rotational force to drive the fan 21 to rotate, and the low temperature outside the circulation pipe 17 is blown into the vacuum furnace body 1 to cool the surface of the workpiece. When the cooling treatment is completed, the drive motor 20 is switched off, and then the outer door 4 is opened through the previous steps, and finally the movable bracket 14 and the placement plate 15 are pulled out, and the workpiece is taken out. Finally, when the device is not used, the external power supply is cut off, and the use process of the heat treatment vacuum furnace is completed.

[0044] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. Heat treatment vacuum furnace, characterized by: It comprises a vacuum furnace body (1) for performing vacuum heat treatment on a workpiece; An outer door (4) is arranged on one side of the vacuum furnace body (1) and is used to close the vacuum furnace body (1); A door cover (8) is fixed to the front end of the vacuum furnace body (1) and is used to lock with the outer door (4); A heating ring (11) is arranged inside the vacuum furnace body (1) and is used to heat the workpiece; A placement plate (15) is fixed inside the high temperature resistant bracket (12) and is used to place workpieces; A fan (21) is arranged at the rear side of the vacuum furnace body (1) and is used to cool down the workpiece after the heat treatment. A partition (16) is fixedly installed at the rear side of the vacuum furnace body (1). A circulation pipe (17) is fixedly installed inside the vacuum furnace body (1). One end of the circulation pipe (17) is provided with a water inlet (18), and the other end of the circulation pipe (17) is provided with a water outlet (19). A drive motor (20) is fixedly installed at the rear of the vacuum furnace body (1), and the drive motor (20) is fixedly connected to the fan (21); The vacuum pump (22) and the pressure gauge (23) are respectively arranged at the upper end of the vacuum furnace body (1) and are used to perform vacuum extraction processing on the inside of the vacuum furnace body (1).

2. The heat treatment vacuum furnace according to claim 1, characterized in that: A fixing frame (2) is fixedly mounted on one side of the vacuum furnace body (1); a connecting frame (3) is movably connected to one side of the fixing frame (2); the outer door (4) is movably connected to one side of the connecting frame (3); a cylinder (5) is provided on the outer side of the outer door (4); a handle (6) is fixedly mounted on the front side of the outer door (4); and limit blocks (7) are fixedly mounted around the outer door (4).

3. The heat treatment vacuum furnace according to claim 2, characterized in that: The outer door (4) is movably connected to the connecting frame (3), and the cylinder (5) is arranged between the connecting frame (3) and the outer door (4).

4. The heat treatment vacuum furnace according to claim 1, characterized in that: A limiting groove (9) is provided on one side surface of the door cover (8), and a sealing member (10) is provided inside the door cover (8).

5. The heat treatment vacuum furnace according to claim 1, characterized in that: A high temperature resistant bracket (12) is fixedly installed inside the vacuum furnace body (1), high temperature resistant slide rails (13) are fixedly installed on both sides above the high temperature resistant bracket (12), and a movable bracket (14) is movably connected inside the high temperature resistant slide rail (13).

6. The heat treatment vacuum furnace according to claim 1, characterized in that: The circulation pipe (17) is fixedly connected to the vacuum furnace body (1), and the circulation pipe (17) is arranged in a serpentine shape.

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