Efficient environment-friendly vacuum quenching furnace

Abstract

The utility model relates to the technical field of heat treatment furnaces, in particular to an efficient environment-friendly vacuum quenching furnace which comprises a furnace body and a hollow high-pressure gas tank arranged on the furnace body, a pressurizing gas pump is communicated between one end of the high-pressure gas tank and the furnace body, a gas return pipe is communicated between the other end of the high-pressure gas tank and the furnace body, and a door frame is arranged on the opening side of the furnace body; a main furnace door is vertically arranged on the portal in a sliding mode, a first winch motor electrically connected to the control system is arranged at the top of the portal, and a steel wire rope of the first winch motor is tied to the main furnace door through a rope knot. Two side furnace doors are tightly attached to the side, back on to the furnace body, of the main furnace door, supporting arms are arranged on the portal frame, pressure springs are supported between the side furnace doors and the corresponding supporting arms, two second winch motors electrically connected to the control system are arranged on the portal frame, and reversing wheels are arranged on the supporting arms. And a steel wire rope of the second winch motor bypasses the reversing wheel and is tied on the corresponding side furnace door through a rope knot. The quenching device has the advantages of reducing heat loss and improving the quenching efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat treatment furnaces, in particular to an efficient and environment-friendly vacuum quenching furnace. BACKGROUND

[0002] A quenching furnace is a device for heating metal workpieces before quenching, and its main working principle is to place the workpieces into the furnace, heat them to a quenching temperature above the critical point and keep them for a period of time, and then quickly take out the workpieces from the furnace and put them into a quenching liquid for quenching treatment. This heat treatment method can change the internal structure of metal materials, thereby improving their hardness and wear resistance.

[0003] However, a significant problem of the existing quenching furnace is that when the workpieces are taken out or put in, the furnace door is fully open, so a large amount of heat in the furnace is lost, which not only causes heat loss, but also requires a certain time to reheat the furnace to the quenching temperature for the next batch of quenching, thereby reducing the quenching efficiency, and thus obvious deficiencies exist. CONTENT OF THE INVENTION

[0004] In order to improve the problem of large heat loss caused by the large opening of the furnace door when the workpieces are taken out or put in, the application provides an efficient and environment-friendly vacuum quenching furnace.

[0005] The efficient and environment-friendly vacuum quenching furnace provided by the application adopts the following technical scheme:

[0006] An efficient and environment-friendly vacuum quenching furnace comprises a furnace body, a high-pressure gas tank arranged on the furnace body and hollow inside, a pressurizing gas pump in communication between one end of the high-pressure gas tank and the furnace body, and a gas return pipe in communication between the other end of the high-pressure gas tank and the furnace body, an electromagnetic valve is arranged on the gas return pipe, and the electromagnetic valve and the pressurizing gas pump are both electrically connected to a control system; a door frame is arranged on the opening side of the furnace body, a main furnace door is vertically and slidably arranged on the door frame, a first winch motor electrically connected to the control system is arranged on the top of the door frame, and the steel wire rope of the first winch motor is tied to the main furnace door through a knot; two side furnace doors are tightly arranged on the side of the main furnace door away from the furnace body, a support arm is arranged on the door frame, the two side furnace doors are respectively corresponding to one support arm and are in sliding cooperation with the support arm, a compression spring is top-braced between the side furnace door and the corresponding support arm, two second winch motors electrically connected to the control system are arranged on the door frame, a reversing wheel is arranged on the support arm, and the steel wire rope of the second winch motor is wound around the reversing wheel and tied to the corresponding side furnace door through a knot.

[0007] By adopting the technical scheme, before heating, the air in the furnace body is pumped to the high-pressure gas tank for temporary storage. During the heating process, part of the heat in the furnace body spreads to the high-pressure gas tank, and the compressed air in the high-pressure gas tank absorbs heat. Before taking the material, the control system opens the electromagnetic valve, so that the gas in the high-pressure gas tank flows back to the furnace body through the backflow pipe. Then the worker operates the first winch motor and the second winch motor through the control system, so as to adjust the height of the main furnace door and the position of the two side furnace doors, and then according to the width and height of the product, the size of the aperture of the taking position formed by the main furnace door and the two side furnace doors is adjusted in real time, so as to reduce the heat loss, shorten the time required for re-heating to the quenching temperature, and improve the quenching efficiency.

[0008] Optionally, a gas pressure gauge extending out of the furnace body is arranged on the high-pressure gas tank.

[0009] By adopting the technical scheme, the gas pressure gauge is used by the worker to check the pressure in the high-pressure gas tank in real time, so as to take appropriate measures according to the pressure.

[0010] Optionally, a horizontal guide rod is arranged on the support arm, and the side furnace door is slidably sleeved on the guide rod.

[0011] By adopting the technical scheme, the guide rod realizes the horizontal movement of the side furnace door.

[0012] Optionally, a reinforcing slide is further arranged on the support arm, and the side furnace door is slidably sleeved on the reinforcing slide.

[0013] By adopting the technical scheme, the reinforcing slide is made of high-strength metal, which can stably support the side furnace door and reduce the possibility of bending deformation of the guide rod under the action of the gravity of the side furnace door.

[0014] Optionally, polytetrafluoroethylene is coated on the guide rod and the reinforcing slide.

[0015] By adopting the technical scheme, the friction coefficient of polytetrafluoroethylene is small, which is conducive to improving the smoothness of the sliding of the side furnace door on the guide rod and the reinforcing slide.

[0016] Optionally, a material preparation table is arranged on the opening side of the furnace body, a feeding roller way is arranged on the material preparation table, a door-shaped frame is arranged on the material preparation table, a plurality of laser radars are arranged on the door-shaped frame, and the door-shaped frame and the laser radars are electrically connected to the control system.

[0017] By adopting the above technical scheme, the worker places the workpiece to be quenched on the feeding roller way, the control system starts the door-shaped frame, the door-shaped frame moves along the feeding roller way, and the multiple lasers cooperate to detect the width and height of the workpiece at each position on the feeding roller way, so that when the feeding roller way feeds the workpiece into the furnace body, the main furnace door and the two side furnace doors cooperate to automatically adjust the size of the aperture at the feeding position in real time without manual intervention, reducing the possibility of human operation errors.

[0018] Optionally, the top of the door-shaped frame and the two sides relative to the feeding roller way are arranged with driving assemblies, the driving assembly comprises a transmission screw rod rotatably arranged on the door-shaped frame, a sliding block is threadedly connected to the transmission screw rod, one laser radar is arranged on each sliding block, and the transmission screw rod is arranged with a driving motor electrically connected to the control system at one end.

[0019] By adopting the above technical scheme, the control system starts the driving motor, the output shaft of the driving motor drives the transmission screw rod to rotate, and the sliding block drives the corresponding laser radar to move under the action of the thread, thereby facilitating to improve the accuracy of the size detection of the special-shaped workpiece.

[0020] Optionally, the door-shaped frame is arranged with a proximity switch electrically connected to the control system relative to the position of each transmission screw rod at both ends, and an inductive block is arranged on the sliding block.

[0021] By adopting the above technical scheme, the proximity switch cooperates with the inductive block to limit the limit position of the moving stroke of the sliding block.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. Before heating, the air in the furnace body is pumped to the high-pressure gas tank for temporary storage. During the heating process, part of the heat in the furnace body spreads to the high-pressure gas tank, so that the compressed air in the high-pressure gas tank absorbs heat. Before taking out the material, the control system opens the electromagnetic valve, so that the gas in the high-pressure gas tank flows back to the furnace body through the backflow pipe. Then the worker operates the first capstan motor and the second capstan motor through the control system, so as to adjust the height of the main furnace door and the position of the two side furnace doors, and then according to the width and height of the product, the size of the aperture formed by the cooperation of the main furnace door and the two side furnace doors at the material taking position is adjusted in real time, so as to reduce the heat loss, shorten the time required for re-heating to quenching temperature, and improve the quenching efficiency.

[0024] 2. The worker places the workpiece to be quenched on the feeding roller, the control system starts the door frame, the door frame moves along the feeding roller, and the multiple lasers cooperate to detect the height and width of the workpiece on the feeding roller during the process, so that when the feeding roller feeds the workpiece into the furnace body, the main furnace door and the two side furnace doors cooperate to automatically adjust the size of the feeding opening in real time without manual intervention, reducing the possibility of human operation errors.

[0025] 3. The control system starts the drive motor, the output shaft of the drive motor drives the transmission screw to rotate, and the sliding block drives the corresponding laser radar to move under the action of the screw thread, thereby improving the accuracy of the size detection of the special-shaped workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of an embodiment of the present application.

[0027] Figure 2 is a sectional view of the positional relationship between the high-pressure gas tank, the pressurized gas pump and the electromagnetic valve in the embodiment of the present application.

[0028] Reference signs: 1, furnace body; 2, high-pressure gas tank; 3, pressurized gas pump; 4, gas return pipe; 5, electromagnetic valve; 6, door frame; 7, main furnace door; 8, first winch motor; 9, side furnace door; 10, support arm; 11, compression spring; 12, second winch motor; 13, reversing wheel; 14, air pressure gauge; 15, guide rod; 16, reinforced carriage; 17, material preparation table; 18, feeding roller; 19, door frame; 20, laser radar; 21, transmission screw; 22, sliding block; 23, drive motor; 24, proximity switch. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0030] The embodiment of the present application discloses a high-efficiency and environmentally-friendly vacuum quenching furnace.

[0031] Referring to Figure 1 and Figure 2 , the high-efficiency and environmentally-friendly vacuum quenching furnace comprises a furnace body 1, a high-pressure gas tank 2 arranged in the side wall of the furnace body 1 and hollow inside, a pressurized gas pump 3 in communication between one end of the high-pressure gas tank 2 and the furnace body 1, a gas return pipe 4 in communication between the other end of the high-pressure gas tank 2 and the furnace body 1, an electromagnetic valve 5 arranged on the gas return pipe 4, and the electromagnetic valve 5 and the pressurized gas pump 3 are both electrically connected to a control system.

[0032] Referring to Figure 1 , the opening side of the furnace body 1 is bolted with a door frame 6, the main furnace door 7 is vertically and slidably arranged on the door frame 6, the top of the door frame 6 is bolted with a first winch motor 8 electrically connected to the control system, and the steel wire rope of the first winch motor 8 is tied to the main furnace door 7 through a knot.

[0033] With reference to Figure 1 , two side furnace doors 9 are tightly attached to the side of the main furnace door 7 away from the furnace body 1, and two L-shaped supporting arms 10 are welded on the door frame 6, and the two side furnace doors 9 are respectively matched with one supporting arm 10 and slidably connected with the same.

[0034] A compression spring 11 is provided between the side furnace door 9 and the corresponding supporting arm 10, a plurality of horizontal guide rods 15 are bolted on the supporting arm 10, and the side furnace door 9 is slidably sleeved on the guide rod 15.

[0035] A reinforcing slide 16 is also welded on the supporting arm 10, and the side furnace door 9 is slidably sleeved on the reinforcing slide 16. The reinforcing slide 16 is made of high-strength and high-hardness metal, which can support the side furnace door 9 to stably slide on the guide rod 15.

[0036] Teflon is required on the guide rod 15 and the reinforcing slide 16, and the friction coefficient of Teflon is small, which is beneficial to improve the smoothness of the side furnace door 9 sliding on the guide rod 15 and the reinforcing slide 16.

[0037] With reference to Figure 1 , two second winch motors 12 electrically connected to the control system are bolted on the top of the door frame 6, one second winch motor 12 corresponds to one side furnace door 9, a reversing wheel 13 is bolted on the supporting arm 10, and the steel wire rope of the second winch motor 12 passes through the reversing wheel 13 and is tied to the corresponding side furnace door 9 by a knot.

[0038] With reference to Figure 1 and Figure 2 , before the furnace body 1 starts to heat up, the air in the furnace body 1 is first pumped out to the high-pressure gas tank 2 by the pressure gas pump 3. During the heating process, part of the heat in the furnace body 1 extends to the high-pressure gas tank 2, and the air in the high-pressure gas tank 2 is heated and heated.

[0039] With reference to Figure 1 and Figure 2 , before the workpiece is taken out, the control system opens the electromagnetic valve 5, so that the compressed air in the high-pressure gas tank 2 flows back to the furnace body 1 through the backflow pipe, and then the control system starts the first winch motor 8 and the second winch motor 12.

[0040] The first winch motor 8 drives the main furnace door 7 to move upward through the steel wire rope, and the two second winch motors 12 pull the two side furnace doors 9 away from each other through the steel wire rope, so that the size of the caliber of the main furnace door 7 and the two side furnace doors 9 can be controlled to form a material taking position, which reduces the heat loss and shortens the time required for the furnace body 1 to heat up to the quenching temperature, thereby improving the quenching efficiency.

[0041] With reference to Figure 1 and Figure 2The high-pressure gas tank 2 is threadedly connected with a gas pressure gauge 14 extending out of the furnace body 1, and the gas pressure gauge 14 is used for allowing workers to view the gas pressure in the high-pressure gas tank 2 in real time, so as to facilitate the workers to take appropriate measures according to the gas pressure.

[0042] With reference to Figure 1 In actual use, since the main furnace door 7 and the two side furnace doors 9 are respectively driven by different power sources, and the position of the workpiece needs to be observed by naked eyes, it is inconvenient to manually adjust the caliber of the workpiece loading and unloading position.

[0043] Therefore, the opening side of the furnace body 1 is arranged with a material preparation table 17, the material preparation table 17 is bolted with a feeding roller way 18, the material preparation table 17 is arranged with a door-shaped frame 19, and the door-shaped frame 19 is arranged with a plurality of laser radars 20, and the door-shaped frame 19 and the laser radars 20 are electrically connected to the control system.

[0044] With reference to Figure 1 The workers place the workpieces to be quenched on the feeding roller way 18 in advance, and then the control system starts the door-shaped frame 19, and the door-shaped frame 19 moves along the feeding roller way 18, and in this process, each laser radar 20 on the door-shaped frame 19 cooperates to detect the width and height of the workpieces on the feeding roller way 18.

[0045] In this way, when the workpieces enter and exit the furnace body 1, the main furnace door 7 and the two side furnace doors 9 can automatically and intelligently adjust the position under the control of the control system, without manual intervention, thereby reducing the possibility of human operation errors.

[0046] With reference to Figure 1 The top of the door-shaped frame 19 and the two sides relative to the feeding roller way 18 are arranged with driving assemblies, the driving assemblies include transmission lead screws 21 rotatably arranged on the door-shaped frame 19, the transmission lead screws 21 are threadedly connected with sliding blocks 22, one laser radar 20 is threadedly connected with each sliding block 22, one end of the transmission lead screw 21 is coaxially connected with a driving motor 23 electrically connected to the control system through a shaft coupling, the transmission lead screw 21 located at the top of the door-shaped frame 19 is horizontal, and the other two transmission lead screws 21 are vertical.

[0047] With reference to Figure 1 The control system starts the driving motor 23, the output shaft of the driving motor 23 drives the transmission lead screw 21 to rotate, and the sliding block 22 drives the corresponding laser radar 20 to move under the action of the thread, so as to facilitate to improve the accuracy of the size detection of the special-shaped workpiece, and reduce the possibility that the size detection of the special-shaped workpiece is inaccurate, and the special-shaped workpiece collides with the main furnace door 7 or the side furnace door 9 when entering or exiting the furnace body 1.

[0048] With reference to Figure 1The door frame 19 is threadedly connected with a proximity switch 24 electrically connected to the control system relative to the position of each transmission screw rod 21 at both ends, and the sliding block 22 is embedded with a sensing block (not shown in the figure). The sensing block cooperates with the proximity switch 24 to limit the extreme position of the sliding stroke of the sliding block 22.

[0049] The implementation principle of the high-efficiency environmentally friendly vacuum quenching furnace according to the embodiment of the application is as follows:

[0050] The worker places the workpiece to be quenched on the feeding roller 18 in advance, and then the control system starts the door frame 19, and the door frame 19 moves along the feeding roller 18. During the process, each laser radar 20 on the door frame 19 cooperates to detect the width and height of each workpiece on the feeding roller 18.

[0051] Before the workpiece enters the furnace body 1, the control system opens the electromagnetic valve 5, so that the compressed air in the high-pressure gas tank 2 flows back to the furnace body 1 through the backflow pipe, and then the control system starts the first winch motor 8 and the second winch motor 12.

[0052] The first winch motor 8 drives the main furnace door 7 to move upward through the steel wire rope, and the two second winch motors 12 pull the two side furnace doors 9 away from each other through the steel wire ropes. According to the size of each workpiece detected in advance, the control system can automatically and intelligently adjust the positions of the main furnace door 7 and the two side furnace doors 9, so as to adjust the size of the aperture formed by the main furnace door 7 and the two side furnace doors 9 at the feeding and discharging positions.

[0053] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A high-efficiency environmentally friendly vacuum quenching furnace, characterized in that: The utility model relates to a high-pressure gas tank (2) is arranged in the furnace body (1) and is hollow inside, one end of high-pressure gas tank (2) is communicated with the furnace body (1) and is communicated with the furnace body (1) with the back gas pipe (4) between the pressurized gas pump (3) of another end, electromagnetic valve (5) is arranged on back gas pipe (4), and the pressurized gas pump (3) is all electrically connected to control system with electromagnetic valve (5); The opening side of the furnace body (1) is provided with a gantry (6), and the main furnace door (7) is vertically and slidably arranged on the gantry (6). The top of the gantry (6) is provided with a first winch motor (8) electrically connected to the control system. The steel wire rope of the first winch motor (8) is tied to the main furnace door (7) through a knot. Two side furnace doors (9) are tightly arranged on the side of the main furnace door (7) away from the furnace body (1). The gantry (6) is provided with a support arm (10). Two side furnace doors (9) are respectively corresponding to one support arm (10) and are in sliding cooperation with the same. The side furnace door (9) and the corresponding support arm (10) are top supported by a compression spring (11). The gantry (6) is provided with two second winch motors (12) electrically connected to the control system. The support arm (10) is provided with a reversing wheel (13). The steel wire rope of the second winch motor (12) passes through the reversing wheel (13) and is tied to the corresponding side furnace door (9) through a knot.

2. The energy-efficient, environmentally friendly vacuum quenching furnace of claim 1, wherein: The high-pressure gas tank (2) is provided with a gas pressure gauge (14) extending to the outside of the furnace body (1).

3. The energy-efficient, environmentally friendly vacuum quenching furnace of claim 1, wherein: The support arm (10) is provided with a horizontal guide rod (15). The side furnace door (9) is slidably sleeved on the guide rod (15).

4. The high-efficiency environmentally friendly vacuum quenching furnace according to claim 3, characterized in that: The support arm (10) is further provided with a reinforced sliding frame (16). The side furnace door (9) is slidably sleeved on the reinforced sliding frame (16).

5. The energy-efficient, environmentally friendly vacuum quenching furnace of claim 4, wherein: The guide rod (15) and the reinforced sliding frame (16) are coated with polytetrafluoroethylene.

6. The energy efficient and environmentally friendly vacuum quenching furnace as claimed in claim 1, wherein: The opening side of the furnace body (1) is provided with a material preparation table (17). The material preparation table (17) is provided with a feeding roller (18). The material preparation table (17) is provided with a door-shaped frame (19). The door-shaped frame (19) is provided with a plurality of laser radars (20). The door-shaped frame (19) and the laser radars (20) are electrically connected to the control system.

7. The energy-efficient, environmentally friendly vacuum quenching furnace of claim 6, wherein: The top of the door-shaped frame (19) and the two sides opposite to the feeding roller (18) are provided with driving assemblies. The driving assembly comprises a transmission screw rod (21) rotatably arranged on the door-shaped frame (19). The transmission screw rod (21) is threadedly connected with a sliding block (22). One laser radar (20) is arranged on each sliding block (22). One end of the transmission screw rod (21) is provided with a driving motor (23) electrically connected to the control system. The transmission screw rod (21) at the top is horizontal. The other two transmission screw rods (21) are vertical.

8. The energy-efficient, environmentally friendly vacuum quenching furnace of claim 7, wherein: The door-shaped frame (19) is provided with a proximity switch (24) electrically connected to the control system opposite to the position of each end of the transmission screw rod (21). The sliding block (22) is provided with a sensing block.

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