Box-type atmosphere protection heat treatment furnace

Abstract

The box-type atmosphere protection heat treatment furnace comprises a box-type resistance furnace and a box body, a mounting plate is arranged at the top of the box body, the box-type resistance furnace is arranged on the surface of the mounting plate, an exhaust component used for exhausting is arranged at the top end of the box-type resistance furnace, a pressure relief valve is arranged on one side of the top end of the box-type resistance furnace, and a pressure relief valve is arranged on the other side of the top end of the box-type resistance furnace. The box-type resistance furnace is communicated with a pressure release valve, a partition plate is fixedly connected to the inner wall of the box body, a nitrogen box, a nitrogen box and a cooling mechanism are arranged on the surface of the partition plate, and a waste gas collecting box and a sucking pump are arranged on the inner surface of the box body. The device is reasonable in structure, after heat treatment of a workpiece is completed, a worker manually opens a switch valve and starts a sucking pump, gas heated by the box-type resistance furnace enters a waste gas collecting box through a first connector, a waste gas conveying component and a first connecting pipe, in addition, a cooling mechanism is combined, high-temperature airflow in the waste gas conveying component is cooled, and the heat treatment efficiency is improved. And the suction pump is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment, in particular to a box-type atmosphere protection heat treatment furnace. Background Art

[0002] The box-type protective atmosphere heat treatment furnace is a commonly used heat treatment equipment. When the workpiece is heat treated, nitrogen is filled into the furnace as a protective gas, so that the workpiece is heat treated in a nitrogen atmosphere to prevent the surface of the workpiece from being oxidized;

[0003] After the existing box-type protective atmosphere heat treatment furnace is filled with nitrogen, it needs to be heated to increase the temperature of the inner wall of the furnace body to achieve heat treatment of the workpiece. After the work heat treatment, there is heated nitrogen in the furnace body. If the treatment furnace is opened directly, the heated gas is easy to cause harm to the staff. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a box-type protective atmosphere heat treatment furnace. The technical solution solves the problem proposed in the above background technology that the existing box-type protective atmosphere heat treatment furnace needs to be heated after being filled with nitrogen to increase the temperature of the inner wall of the furnace body to achieve heat treatment of the workpiece. After the working heat treatment, there is heated nitrogen in the furnace body. If the treatment furnace is opened directly, the heated gas is likely to cause harm to the staff.

[0005] To achieve the above-mentioned purpose, the utility model provides a box-type atmosphere protection heat treatment furnace, comprising a box-type resistance furnace and a box body, a mounting plate is provided on the top of the box body, the box-type resistance furnace is arranged on the surface of the mounting plate, an exhaust component for exhaust is provided on the top of the box-type resistance furnace, a pressure relief valve is provided on one side of the top of the box-type resistance furnace, and the box-type resistance furnace is connected to the pressure relief valve;

[0006] The inner wall of the box is fixedly connected with a partition plate, the surface of the partition plate is respectively provided with a nitrogen box, a nitrogen box and a cooling mechanism, the inner surface of the box is respectively provided with a waste gas collection box and an air pump, the waste gas collection box is connected with the air pump, the nitrogen box is connected with the delivery pump, and the output of the air pump is provided with a connecting pipe 1;

[0007] A connecting pipe 2 is provided at the output of the delivery pump, a gas delivery pipe is provided at one end of the connecting pipe 2, a joint 2 is provided on the surface of one side of the box-type resistance furnace, a joint 1 is provided on the surface of the other side of the box-type resistance furnace, an exhaust gas delivery component is provided at one end of the joint 1, a switch valve is provided at the horizontal section of the exhaust gas delivery component, and the cooling mechanism is connected to the exhaust gas delivery component.

[0008] Furthermore, the exhaust component includes an exhaust shell fixedly connected to the top center of the box-type resistance furnace, a plurality of exhaust pipes connected to the box-type resistance furnace, a solenoid valve arranged in the vertical section of the exhaust pipe and an exhaust fan fixedly connected to the inner wall of the exhaust shell;

[0009] One end of the exhaust pipe is communicated with the exhaust shell.

[0010] Further, the cooling mechanism includes a cooling box, a circulation pump arranged on the inner wall of the cooling box, a drain pipe, a valve arranged on the horizontal section of the drain pipe, a water inlet pipe, a cooling pipe and a return pipe arranged at the output of the circulation pump;

[0011] One end of the water inlet pipe is connected to the cooling box, and the other end thereof passes through one side of the box body.

[0012] Furthermore, the exhaust gas conveying component includes a conveying pipe, a gas conveying copper pipe arranged at the center of the conveying pipe, and a plurality of fixing rods fixedly connected to the inner wall of the conveying pipe.

[0013] Furthermore, a one-way valve is provided in the horizontal section of the gas pipe, one end of the gas pipe is connected to connector two, the gas pipe is connected to the box-type resistance furnace through connector two, and the exhaust gas conveying component is connected to the box-type resistance furnace through connector one.

[0014] Furthermore, a plurality of connecting screw holes are provided on one side of the box body, a sealing plate is provided on the end face of the box body, a plurality of through holes matching the connecting screw holes are provided on the surface of the sealing plate, and connecting bolts are threadedly connected to the inner walls of the connecting screw holes.

[0015] Furthermore, a plurality of universal wheels are fixedly connected to the bottom of the box body, and the universal wheels are distributed at the four corners of the bottom of the box-type resistance furnace.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The structure of the present application is reasonable. When the heat treatment of the workpiece is completed, the staff manually opens the switch valve and starts the vacuum pump, so that the gas heated by the box-type resistance furnace enters the exhaust gas collection box through the joint 1, the exhaust gas conveying component and the connecting pipe 1. In addition, combined with the cooling mechanism, the high-temperature airflow inside the exhaust gas conveying component is cooled to avoid damage to the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0019] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a structural schematic diagram of the box body in the utility model;

[0022] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the exhaust gas conveying component in the utility model.

[0023] In the figure: 1. box-type resistance furnace; 2. box body; 3. mounting plate; 4. sealing plate; 5. exhaust shell; 6. exhaust fan; 7. exhaust pipe; 8. solenoid valve; 9. pressure relief valve; 10. exhaust gas conveying components; 101. conveying pipe; 102. gas delivery copper pipe; 103. fixing rod; 11. joint one; 12. connecting pipe one; 13. return pipe; 14. cooling pipe; 15. switch valve; 16. gas delivery pipe; 17. one-way valve; 18. connecting bolt; 19. universal wheel; 20. joint two; 21. connecting pipe two; 22. connecting screw hole; 23. partition plate; 24. nitrogen box; 25. conveying pump; 26. exhaust gas collecting box; 27. vacuum pump; 28. cooling box. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0025] In order to achieve the above-mentioned purpose, the box-type atmosphere protection heat treatment furnace provided by the utility model comprises a box-type resistance furnace 1 and a box body 2, a mounting plate 3 is provided on the top of the box body 2, the box-type resistance furnace 1 is arranged on the surface of the mounting plate 3, an exhaust component for exhaust is provided on the top of the box-type resistance furnace 1, a pressure relief valve 9 is provided on one side of the top of the box-type resistance furnace 1, and the box-type resistance furnace 1 is connected to the pressure relief valve 9;

[0026] The inner wall of the box body 2 is fixedly connected with a partition plate 23, and the surface of the partition plate 23 is respectively provided with a nitrogen box 24, a nitrogen box 24 and a cooling mechanism, and the inner surface of the box body 2 is respectively provided with a waste gas collection box 26 and a vacuum pump 27, the waste gas collection box 26 is connected with the vacuum pump 27, the nitrogen box 24 is connected with the delivery pump 25, and a connecting pipe 12 is provided at the output of the vacuum pump 27;

[0027] A connecting pipe 21 is provided at the output of the delivery pump 25, wherein the delivery pump 25 is a gas pump, a gas delivery pipe 16 is provided at one end of the connecting pipe 21, a joint 20 is provided on the surface of one side of the box-type resistance furnace 1, a joint 11 is provided on the surface of the other side of the box-type resistance furnace 1, an exhaust gas delivery component 10 is provided at one end of the joint 11, a switch valve 15 is provided at the horizontal section of the exhaust gas delivery component 10, and a cooling mechanism is connected to the exhaust gas delivery component 10;

[0028] Before use, the external cold water pipe is connected to the cooling mechanism. When the workpiece needs to be heat treated, the workpiece is placed inside the box-type resistance furnace 1, and the box-type resistance furnace 1 is discharged through the exhaust component. Then, the nitrogen in the nitrogen box 24 is transported to the inside of the box-type resistance furnace 1 through the connecting pipe 21, the gas pipe 16 and the joint 20 through the delivery pump 25. The workpiece is then heated by the box-type resistance furnace 1. If the nitrogen collides during heating, causing the internal pressure of the box-type resistance furnace 1 to be too high, the pressure is relieved through the pressure relief valve 9. After the heat treatment of the workpiece is completed, the staff manually opens the switch valve 15 and starts the exhaust pump 27, so that the gas heated by the box-type resistance furnace 1 enters the exhaust gas collection box 26 through the joint 11, the exhaust gas delivery component 10 and the connecting pipe 12. When the high-temperature gas passes through the exhaust gas delivery component 10, the high-temperature gas is cooled by the cooling mechanism to avoid damage to the exhaust pump 27.

[0029] Specifically, the exhaust components include an exhaust shell 5 fixedly connected to the top center of the box-type resistance furnace 1, a plurality of exhaust pipes 7 connected to the box-type resistance furnace 1, a solenoid valve 8 provided in the vertical section of the exhaust pipe 7, and an exhaust fan 6 fixedly connected to the inner wall of the exhaust shell 5;

[0030] One end of the exhaust pipe 7 is connected to the exhaust shell 5;

[0031] By opening the solenoid valve 8 and starting the exhaust fan 6, the gas inside the box-type resistance furnace 1 enters the exhaust shell 5 through the exhaust pipe 7 and is discharged, so as to facilitate the flushing of nitrogen into the box-type resistance furnace 1.

[0032] Specifically, the cooling mechanism includes a cooling box 28, a circulation pump provided on the inner wall of the cooling box 28, a drain pipe, a valve provided on the horizontal section of the drain pipe, a water inlet pipe, a cooling pipe 14 provided at the output of the circulation pump, and a return pipe 13;

[0033] One end of the water inlet pipe is connected to the cooling box 28, and the other end thereof passes through one side of the box body 2. The exhaust gas conveying component 10 includes a conveying pipe 101, a gas conveying copper pipe 102 arranged at the center of the conveying pipe 101, and a plurality of fixing rods 103 fixedly connected to the inner wall of the conveying pipe 101. The cooling pipe 14 and the return pipe 13 are both connected to the conveying pipe 101, and the drain pipe is connected to the return pipe 13.

[0034] The external cold water pipe is connected to the water inlet pipe to facilitate the delivery of cold water to the cooling box 28. The vacuum pump 27 is started to allow the gas heated by the box-type resistance furnace 1 to enter the exhaust gas collection box 26 through the joint 11, the gas delivery copper pipe 102 and the connecting pipe 12. When the high-temperature gas passes through the gas delivery copper pipe 102 in the exhaust gas delivery component 10, the cold water (the cold water temperature is -5°C--10°C) is allowed to enter the delivery pipe 101 through the cooling pipe 14 through the circulation pump, and the heat is transferred to the cold water through the gas delivery copper pipe 102 to cool the high-temperature gas. Afterwards, the cold water is discharged through the reflux pipe 13 and the drain pipe.

[0035] Specifically, a one-way valve 17 is provided in the horizontal section of the gas pipe 16, one end of the gas pipe 16 is connected to the joint 20, the gas pipe 16 is connected to the box-type resistance furnace 1 through the joint 20, and the exhaust gas conveying component 10 is connected to the box-type resistance furnace 1 through the joint 1 11. The one-way valve 17 is used to prevent the gas inside the box-type resistance furnace 1 from flowing back into the gas pipe 16.

[0036] Specifically, a plurality of connecting screw holes 22 are provided on one side of the box body 2, a sealing plate 4 is provided on the end face of the box body 2, a plurality of through holes matching the connecting screw holes 22 are provided on the surface of the sealing plate 4, and the inner wall of the connecting screw hole 22 is threadedly connected with a connecting bolt 18. By removing the connecting bolt 18, the sealing plate 4 is separated from the box body 2, so that the equipment inside the box body 2 can be easily processed.

[0037] Specifically, a plurality of universal wheels 19 are fixedly connected to the bottom of the box body 2 , and the universal wheels 19 are distributed at the four corners of the bottom of the box-type resistance furnace 1 , so that the box body 2 and the box-type resistance furnace 1 can be easily moved by the universal wheels 19 .

[0038] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A box-type atmosphere protection heat treatment furnace, comprising a box-type resistance furnace (1) and a box body (2), characterized in that: A mounting plate (3) is provided on the top of the box body (2), the box-type resistance furnace (1) is arranged on the surface of the mounting plate (3), an exhaust component for exhausting gas is provided on the top of the box-type resistance furnace (1), a pressure relief valve (9) is provided on one side of the top of the box-type resistance furnace (1), and the box-type resistance furnace (1) is connected to the pressure relief valve (9); A partition plate (23) is fixedly connected to the inner wall of the box body (2), and a nitrogen box (24) and a cooling mechanism are respectively provided on the surface of the partition plate (23); an exhaust gas collection box (26) and an air pump (27) are respectively provided on the inner surface of the box body (2); the exhaust gas collection box (26) is connected to the air pump (27), the nitrogen box (24) is connected to the delivery pump (25), and a connecting pipe 1 (12) is provided at the output of the air pump (27); A second connecting pipe (21) is provided at the output of the delivery pump (25), a gas delivery pipe (16) is provided at one end of the second connecting pipe (21), a second joint (20) is provided on the surface of one side of the box-type resistance furnace (1), a first joint (11) is provided on the surface of the other side of the box-type resistance furnace (1), an exhaust gas delivery component (10) is provided at one end of the first joint (11), a switch valve (15) is provided at a horizontal section of the exhaust gas delivery component (10), and the cooling mechanism is connected to the exhaust gas delivery component (10).

2. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: The exhaust component comprises an exhaust shell (5) fixedly connected to the top center of the box-type resistance furnace (1), a plurality of exhaust pipes (7) connected to the box-type resistance furnace (1), a solenoid valve (8) arranged in the vertical section of the exhaust pipe (7), and an exhaust fan (6) fixedly connected to the inner wall of the exhaust shell (5); One end of the exhaust pipe (7) is connected to the exhaust shell (5).

3. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: The cooling mechanism comprises a cooling box (28), a circulation pump arranged on the inner wall of the cooling box (28), a drainage pipe, a valve arranged on the horizontal section of the drainage pipe, a water inlet pipe, a cooling pipe (14) and a return pipe (13) arranged at the output of the circulation pump; One end of the water inlet pipe is connected to the cooling box (28), and the other end thereof passes through one side of the box body (2).

4. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: The waste gas conveying component (10) comprises a conveying pipe (101), a gas conveying copper pipe (102) arranged at the center of the conveying pipe (101), and a plurality of fixing rods (103) fixedly connected to the inner wall of the conveying pipe (101).

5. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: A one-way valve (17) is provided at a horizontal section of the gas supply pipe (16); one end of the gas supply pipe (16) is connected to a second connector (20); the gas supply pipe (16) is connected to the box-type resistance furnace (1) via the second connector (20); and the exhaust gas conveying component (10) is connected to the box-type resistance furnace (1) via the first connector (11).

6. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: A plurality of connecting screw holes (22) are provided on one side of the box body (2), a sealing plate (4) is provided on the end face of the box body (2), a plurality of through holes matching the connecting screw holes (22) are provided on the surface of the sealing plate (4), and connecting bolts (18) are threadedly connected to the inner walls of the connecting screw holes (22).

7. The box-type atmosphere protection heat treatment furnace according to claim 1, characterized in that: A plurality of universal wheels (19) are fixedly connected to the bottom of the box body (2), and the universal wheels (19) are distributed at the four corners of the bottom of the box-type resistance furnace (1).

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