Vacuum gas quenching furnace

Abstract

The utility model relates to the technical field of gas quenching furnaces, in particular to a vacuum gas quenching furnace which comprises a furnace body, a heating box is arranged in the furnace body, a cooling box is arranged on one side of the heating box, a heating assembly is arranged in the heating box, and first through holes are formed in the top end and the bottom end of the heating box. A sealing assembly enabling the first through hole to be in an opened or closed state is arranged in the furnace body, a cooling assembly is arranged in the cooling box, two second through holes are evenly and symmetrically formed in the top end and the bottom end of the cooling box, horizontal driving assemblies are arranged at the top end and the bottom end in the cooling box, and two driving pieces are arranged on the horizontal driving assemblies in a transmission mode. According to the utility model, during heating, the cooling assembly and the heating assembly are effectively isolated, so that the heating effect and the heating efficiency are improved, the load of the cooling assembly is not too large, and the work of the cooling assembly is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas quenching furnaces, in particular to a vacuum gas quenching furnace. Background Art

[0002] Quenching treatment is a common manufacturing process for steel parts to improve their hardness and wear resistance. The single-chamber vacuum gas quenching furnace has a simple structure, is relatively easy to manufacture, is convenient to operate and maintain, and occupies a small area. It is a commonly used furnace type for steel quenching. However, its heating and cooling are both inside the same cavity. The cooling pipe cannot work during heating, which will cause the temperature of the cooling fan to continue to rise. When cooling is required, the cooling fan is still at a relatively high temperature, causing the cooling fan's workload to increase, affecting its stability in use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a vacuum air quenching furnace to effectively isolate the cooling component from the heating component during heating, thereby improving the heating effect and heating efficiency without causing excessive load on the cooling component, making its operation more stable.

[0004] The utility model adopts the following technical solution to solve its technical problems: a vacuum air quenching furnace comprises a furnace body, a heating box is arranged inside the furnace body, a cooling box is arranged on one side of the heating box, a heating component is arranged inside the heating box, a first through hole is opened at the top and bottom of the heating box, a closing component for opening or closing the first through hole is arranged inside the furnace body, a cooling component is arranged inside the cooling box, two second through holes are evenly and symmetrically arranged at the top and bottom of the cooling box, a horizontal driving component is arranged at the top and bottom of the cooling box, two driving members are arranged on the horizontal driving component for transmission, a lifting driving member is arranged at one end of the two driving members, and a closing block for opening or closing the second through hole is arranged at the driving end of the lifting driving member.

[0005] Furthermore, the heating assembly includes heating coils arranged on the inner walls of both ends of the heating box, and a placement table arranged inside the heating box.

[0006] Furthermore, the heating box has an inlet on one side and a door panel hinged to the side of the heating box to enable the inlet to be in an open or closed state.

[0007] Furthermore, the cooling assembly includes a cooling coil arranged inside the cooling box, a first heat dissipation fan arranged on the inner wall of the heating box, a first motor arranged on one side of the cooling box, a second heat dissipation fan arranged on the other side of the cooling box, and a second motor arranged on the outside of the furnace body. One end of the cooling coil passes through the cooling box and the furnace body and extends to the top of the furnace body, and the other end of the cooling coil passes through the cooling box and the furnace body and extends to the bottom of the furnace body. The first heat dissipation fan passes through the heating box and the cooling box through a rotating shaft and is connected to the driving end of the first motor. The second heat dissipation fan passes through the cooling box and the furnace body through a rotating shaft and is connected to the second motor.

[0008] Furthermore, the sealing component includes a cylinder and a baffle, wherein the cylinder is arranged on the outer surface of the furnace body, and the baffle is arranged inside the furnace body, and the driving end of the cylinder penetrates the furnace body and is connected to the baffle.

[0009] Furthermore, the horizontal drive assembly includes a support end, an adjusting screw, a third motor, and a sliding rod. The support end is symmetrically arranged on the inner wall of the cooling box, the adjusting screw is rotatably arranged between the two support ends, the third motor is arranged on the inner wall of the cooling box, and the driving end is connected to the adjusting screw, the sliding rod is arranged between the two support ends at one end of the adjusting screw, and one end of the two driving members is threadedly connected to the adjusting screw, and the other end is slidably connected to the sliding rod.

[0010] Furthermore, an air supply pipe communicating with the interior is provided at the top of the furnace body.

[0011] The beneficial effects of the utility model are:

[0012] The utility model cooperates with the arrangement of a heating box, a first through hole, a closing component, a heating component, a cooling box, a second through hole, a cooling component, a horizontal driving component, a driving member, a lifting driving member, and a closing block. During heating, the closing component closes the first through hole of the heating box to form a closed space inside the heating box. The heating component heats the workpiece in the closed space, effectively improving the heating effect and efficiency, so as to reduce heat exchange with the outside from the inner wall of the furnace body and the cooling coil, and reduce heat loss. The horizontal driving component of the cooling box drives the two driving members to approach each other to correspond to the second through hole, and the lifting driving member drives the closing block to approach the second through hole to close the second through hole, so as to form a closed space in the cooling box. The cooling medium is introduced through the cooling coil in the cooling component, so that the heat dissipation fan and other components in the cooling box are at normal temperature and do not interfere with the heating box, thereby preventing the cooling component from having a large workload due to heating and making its operation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings.

[0014] Figure 1 It is a front cross-sectional view of the utility model.

[0015] Figure 2 This is a bottom view of the adjusting screw and sliding rod of the utility model.

[0016] Among them: 1. furnace body; 2. heating box; 201. first through hole; 3. cooling box; 301. second through hole; 4. horizontal drive assembly; 401. support end; 402. adjusting screw; 403. third motor; 404. sliding rod; 5. driving member; 6. lifting drive member; 7. closing block; 801. heating coil; 802. placing table; 9. inlet; 10. door panel; 1101. cooling coil; 1102. first cooling fan; 1103. first motor; 1104. second cooling fan; 1105. second motor; 1201. cylinder; 1202. baffle; 13. air supply pipe. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Reference Figure 1-2 As shown, the vacuum air quenching furnace includes a furnace body 1, a heating box 2 is arranged inside the furnace body 1, a cooling box 3 is arranged on one side of the heating box 2, a heating component is arranged inside the heating box 2, a first through hole 201 is opened at the top and bottom of the heating box 2, and a closing component that makes the first through hole 201 open or closed is arranged inside the furnace body 1. When heating, the closing component closes the first through hole 201 of the heating box 2 to form a closed space inside the heating box 2. The heating component heats the workpiece in the closed space, effectively improving the heating effect and heating efficiency, so as to reduce heat exchange with the outside from the inner wall of the furnace body and the cooling coil, and reduce heat loss.

[0019] A cooling assembly is arranged inside the cooling box 3. Two second through holes 301 are evenly and symmetrically arranged at the top and bottom of the cooling box 3. A horizontal driving assembly 4 is arranged at the top and bottom of the cooling box 3. Two driving members 5 are arranged on the horizontal driving assembly 4 for transmission. A lifting driving member 6 is arranged at one end of the two driving members 5. A closing block 7 for opening or closing the second through hole 301 is arranged at the driving end of the lifting driving member 6. The horizontal driving assembly 4 of the cooling box 3 drives the two driving members 5 to approach each other and correspond to the second through hole 301. The lifting driving member 6 drives the closing block 7 to approach the second through hole 301 to close the second through hole 301, so as to form a closed space for the cooling box 3. The cooling medium is introduced through the cooling coil 1101 in the cooling assembly, so that the heat dissipation fan and other components in the cooling box 3 are at normal temperature and do not interfere with the heating box 2, thereby preventing the cooling assembly from having a large workload due to heating and making it work more stably.

[0020] Preferably, the heating assembly includes a heating coil 801 arranged on the inner walls at both ends of the heating box 2, and a placement table 802 arranged inside the heating box 2. The heating coil 801 can be an electric heating coil, and the placement table 802 is used to place the workpiece to be heated.

[0021] Preferably, an inlet 9 is provided on one side of the heating box 2 , and a door panel 10 is hinged on the side of the heating box 2 so that the inlet 9 is in an open or closed state, and the workpiece is placed on the placement table 802 of the heating box 2 through the inlet 9 .

[0022] Preferably, the sealing component includes a cylinder 1201 and a baffle 1202, the cylinder 1201 is arranged on the outer surface of the furnace body 1, and the baffle 1202 is arranged inside the furnace body 1, and the driving end of the cylinder 1201 passes through the furnace body 1 and is connected to the baffle 1202. When heating, the cylinder 1201 drives the baffle to approach the first through hole 201, so that the baffle 1202 blocks the first through hole 1201, so that the heating box 2 is in a closed state. When cooling, the cylinder 1201 drives the baffle 1202 away from the first through hole 1201, so that the interior of the heating box 2 is connected with the interior of the furnace body 1.

[0023] Preferably, the horizontal drive assembly 4 includes a support end 401, an adjusting screw 402, a third motor 403, and a sliding rod 404. The support end 401 is symmetrically arranged on the inner wall of the cooling box 3. The adjusting screw 402 is rotatably arranged between the two support ends 401. The third motor 403 is arranged on the inner wall of the cooling box 3, and the driving end is connected to the adjusting screw 402. The sliding rod 404 is arranged between the two support ends 401 at one end of the adjusting screw 402. One end of the two driving members 5 is threadedly connected to the adjusting screw 402, and the other end is slidably connected to the sliding rod 404. The adjusting screw 402 is provided with an external thread with opposite threads at both ends. The two driving members 5 are respectively connected to the external threads with opposite threads. The third motor 403 drives the adjusting screw 402 to rotate, and drives the two driving members 5 to reciprocate along the adjusting screw 402 and the sliding rod 404, so that the two driving members 5 correspond to the second through hole 301, or move away from the second through hole 301. When heating the workpiece, the two driving members 5 correspond to the second through hole 301, and the lifting drive member 6 drives the closing block 7 to approach the second through hole 301 and block it. When cooling the workpiece, the lifting drive member 6 drives the closing block 7 away from the second through hole 301. The third motor 403 then drives the adjusting screw 402 to rotate, and drives the two driving members 5 away from each other, so that the cooling box 3 and the furnace body 1 are connected to each other, and then the cooling box 3, the heating box 2, and the furnace body 1 are connected to each other.

[0024] Preferably, the cooling component includes a cooling coil 1101 arranged inside the cooling box 2, a first heat dissipation fan 1102 arranged on the inner wall of the heating box 2, a first motor 1103 arranged on one side of the cooling box 3, a second heat dissipation fan 1104 arranged on the other side of the cooling box 3, and a second motor 1105 arranged on the outside of the furnace body 1. One end of the cooling coil 1101 passes through the cooling box 3 and the furnace body 1 and extends to the top of the furnace body 1. The other end of the cooling coil 1101 passes through the cooling box 3 and the furnace body 1 and extends to the bottom of the furnace body 1. The cooling coil 1101 is located at the top of the furnace body 1 and is provided with a liquid inlet. The cooling coil 1101 is located at the bottom of the furnace body and is provided with a liquid outlet. The cooling medium enters the cooling coil 1101 inside the cooling box 3 from the liquid inlet and then flows out from the liquid outlet, so that the cooling medium is continuously fed in from a long distance. The first heat dissipation fan 1102 passes through the heating box 2 and the cooling box 3 through a rotating shaft. , connected to the driving end of the first motor 1103, the second heat dissipation fan 1104 passes through the cooling box 3 and the furnace body 1 through the rotating shaft, and is connected to the second motor 1105. The first motor 1103 is cooled by the cooling coil 1101 and will not overheat due to the operation of the heating box 2. The second motor 1105 and the heating box 2 are isolated by the cooling box 3 and will not overheat, thereby preventing a large workload due to excessive temperature and making the operation more stable. During cooling, the first motor 1103 and the second motor 1105 drive the first heat dissipation fan 1102 and the second heat dissipation fan 1104 to rotate and work, driving the inert cooling gas in the furnace body 1 to enter the heating box 2 from the first through hole 201 to cool the workpiece, and then enter the cooling box 2 from the second through hole 301, contact with the cooling coil 1101 to cool the workpiece, and then be sent to the heating box 2 to cool the workpiece again, forming a reciprocating cycle.

[0025] Preferably, an air supply pipe 13 communicating with the interior is provided at the top of the furnace body 1 , and a control valve is provided on the air supply pipe 13 , which is connected to an external air supply device to deliver inert cooling gas to the interior of the furnace body 1 during cooling to cool the workpiece.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A vacuum gas quenching furnace, comprising a furnace body (1), characterized in that: A heating box (2) is arranged inside the furnace body (1), a cooling box (3) is arranged on one side of the heating box (2), a heating component is arranged inside the heating box (2), a first through hole (201) is opened at the top and bottom of the heating box (2), a closing component for making the first through hole (201) open or closed is arranged inside the furnace body (1), a cooling component is arranged inside the cooling box (3), two second through holes (301) are evenly and symmetrically arranged at the top and bottom of the cooling box (3), a horizontal driving component (4) is arranged at the top and bottom of the cooling box (3), two driving members (5) are arranged on the horizontal driving component (4), one end of the two driving members (5) is arranged with a lifting driving member (6), and the driving end of the lifting driving member (6) is arranged with a closing block (7) for opening or closing the second through hole (301).

2. The vacuum gas quenching furnace according to claim 1, characterized in that: The heating assembly comprises heating coils (801) arranged on the inner walls at both ends of the heating box (2), and a placement table (802) arranged inside the heating box (2).

3. The vacuum gas quenching furnace according to claim 1, characterized in that: The heating box (2) is provided with an inlet (9) on one side, and a door panel (10) hinged to the side of the heating box (2) to enable the inlet (9) to be in an open or closed state.

4. The vacuum gas quenching furnace according to claim 1, characterized in that: The cooling assembly comprises a cooling coil (1101) arranged inside a cooling box (3), a first heat dissipation fan (1102) arranged on the inner wall of a heating box (2), a first motor (1103) arranged on one side inside the cooling box (3), a second heat dissipation fan (1104) arranged on the other side inside the cooling box (3), and a second motor (1105) arranged on the outside of a furnace body (1); one end of the cooling coil (1101) passes through the cooling box (3) and the furnace body (1) and extends to the top of the furnace body (1); the other end of the cooling coil (1101) passes through the cooling box (3) and the furnace body (1) and extends to the bottom of the furnace body (1); the first heat dissipation fan (1102) passes through the heating box (2) and the cooling box (3) via a rotating shaft and is connected to a driving end of the first motor (1103); and the second heat dissipation fan (1104) passes through the cooling box (3) and the furnace body (1) via a rotating shaft and is connected to the second motor (1105).

5. The vacuum gas quenching furnace according to claim 1, characterized in that: The sealing component comprises a cylinder (1201) and a baffle (1202); the cylinder (1201) is arranged on the outer surface of the furnace body (1); the baffle (1202) is arranged inside the furnace body (1); and the driving end of the cylinder (1201) passes through the furnace body (1) and is connected to the baffle (1202).

6. The vacuum gas quenching furnace according to claim 1, characterized in that: The horizontal driving assembly (4) comprises a supporting end portion (401), an adjusting screw (402), a third motor (403), and a sliding rod (404); the supporting end portion (401) is symmetrically arranged on the inner wall of the cooling box (3); the adjusting screw (402) is rotatably arranged between the two supporting end portions (401); the third motor (403) is arranged on the inner wall of the cooling box (3), and the driving end is connected to the adjusting screw (402); the sliding rod (404) is arranged between the two supporting end portions (401) at one end of the adjusting screw (402); one end of the two driving members (5) is threadedly connected to the adjusting screw (402), and the other end is slidably connected to the sliding rod (404).

7. The vacuum gas quenching furnace according to claim 1, characterized in that: The top of the furnace body (1) is provided with an air supply pipe (13) which is in communication with the interior.

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