阅读说明：本技术 一种自动预冷空气淬火装置 (Automatic precooling air quenching device ) 是由 王勇 周浩 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种自动预冷空气淬火装置,包括：风淬装置外壳、冷气机组、换热器、进风风扇、雾化机组、喷雾装置、排气风扇、排气管道、料筐传送辊、料筐、风淬室电动门、加热炉和出料输送带；换热器安装在所述风淬装置外壳的内腔顶端开口处；进风风扇安装在所述换热器的内部且位于冷气机组与换热器管道连接处下方；喷洒机构安装在所述风淬装置外壳的内腔顶端。该自动预冷空气淬火装置,可实现铝合金型材加热后自动风淬,冷却风温度可恒定输出不受环境温度的影响,加快工件冷却速度,淬火转移过程中温降较少,产品质量可得到有效保证,并且对于薄壁件说,转移时间短,淬火后工件变形量较小,工件最终的机械性能得到保证。(The invention discloses an automatic precooling air quenching device, which comprises: the air quenching device comprises an air quenching device shell, an air conditioning unit, a heat exchanger, an air inlet fan, an atomizing unit, a spraying device, an exhaust fan, an exhaust pipeline, a charging basket conveying roller, a charging basket, an electric door of an air quenching chamber, a heating furnace and a discharging conveying belt; the heat exchanger is arranged at an opening at the top end of an inner cavity of the shell of the air quenching device; the air inlet fan is arranged in the heat exchanger and is positioned below the joint of the air conditioning unit and the heat exchanger pipeline; the spraying mechanism is installed on the top end of the inner cavity of the shell of the air quenching device. The automatic precooling air quenching device can realize automatic air quenching after heating the aluminum alloy section, the temperature of cooling air can be constantly output and is not influenced by the environmental temperature, the cooling speed of a workpiece is accelerated, the temperature drop in the quenching transfer process is less, the product quality can be effectively ensured, in addition, the transfer time is short for the thin-wall part, the deformation of the workpiece after quenching is less, and the final mechanical property of the workpiece is ensured.)

1. An automatic precooling air quenching device, characterized by comprising:

a wind quenching device shell (1);

the air conditioning unit (2) is arranged outside the air quenching device shell (1);

the heat exchanger (3) is arranged at an opening at the top end of the inner cavity of the air quenching device shell (1), the air conditioning unit (2) is connected with the heat exchanger (3) through a pipeline, and the top end of the heat exchanger (3) is communicated with the outside;

the air inlet fan (4) is arranged below the outlet of the heat exchanger (3);

the atomizing unit (5) is arranged on the outer side of the air quenching device shell (1), and the atomizing unit (5) can be connected with an external water pipe;

the spraying device (6) is arranged at the top end of the inner cavity of the air quenching device shell (1);

the exhaust fan (8) is arranged on the outer side of the air quenching device shell (1), and an air inlet pipe of the exhaust fan (8) extends into the inner cavity of the air quenching device shell (1);

the exhaust pipeline (7) is arranged at an air outlet at the top end of the exhaust fan (8);

the charging basket conveying roller (9) is arranged at the center of the inner cavity of the air quenching device shell (1) along the front-back direction;

the charging basket (10) is detachably placed on the surface of the charging basket conveying roller (9);

the number of the air quenching chamber lifting doors (12) is two, the two air quenching chamber lifting doors (12) are respectively arranged at openings at the front side and the rear side of the air quenching device shell (1), and the front side and the rear side of the charging basket conveying roller (9) respectively extend out of inner cavities of the front air quenching chamber lifting door and the rear air quenching chamber lifting door (12);

the heating furnace (13) is arranged at the rear side of the air quenching device shell (1);

the discharging conveying device (14) is arranged in an inner cavity of the heating furnace (13), and the discharging conveying device (14) is positioned at the same height position on the rear side of the charging basket conveying roller (9);

and the PLC control system (11) is arranged on the outer side of the air quenching device shell (1).

2. The automatic precooling air quenching apparatus as claimed in claim 1, wherein: the spraying mechanism (6) comprises:

the number of the mounting plates (15) is two, and the two mounting plates (15) are respectively arranged on the left side and the right side of an inner cavity of the air quenching device shell (1);

the number of the lifting cylinders (16) is two, and the two lifting cylinders (16) are respectively fixed at the front end and the rear end of the inner side of the left mounting plate (16) and the rear end of the inner side of the right mounting plate (16);

the mounting frame body (17) is fixed at the top ends of the two rear lifting slide bars (18) along the front-rear direction;

the number of the lifting slide bars (18) is two, and the two lifting slide bars (18) are respectively fixed in sliding sleeves (19) at the tops (15) of the left mounting plate and the right mounting plate;

the number of the amplification assemblies (20) is a plurality, and the plurality of amplification assemblies (20) are arranged on the inner side of the mounting frame body (17) from front to back in a clearance manner;

the number of the spraying devices (21) is a plurality, and the plurality of spraying devices (21) are respectively arranged at the lower part of the amplifying assembly (20).

3. The automatic precooling air quenching apparatus as claimed in claim 2, wherein: the amplification assembly (20) comprises:

the amplification component cover body (201) is arranged on the inner side of the mounting frame body (17) through a support;

the large gear (202) is rotatably connected to the center of the top end of the amplification component cover body (201) through a pin shaft;

the number of the sliding rails (203) is two, and the two sliding rails (203) are respectively arranged on the left side and the right side of the inner cavity of the amplification component cover body (201) along the front-back direction;

the number of the sliding blocks (204) is two, and the two sliding blocks (204) are respectively sleeved on the outer walls of the left sliding rail (203) and the right sliding rail (203);

guide grooves (205) provided on the inner sides of the left and right sliders (204) in the left-right direction;

and the limiting sliding block (206) is rotatably connected to the bottom end of the large gear (202) through a pin shaft, and the limiting sliding block (206) is inserted into an inner cavity of the guide groove (205).

4. The automatic precooling air quenching apparatus as claimed in claim 3, wherein: the amplification assembly (20) further comprises;

the first motor (207) is arranged in the inner cavity of the amplification assembly cover body (201), and the first motor (207) is controlled by an external PLC control system (15);

and the small gear (208) is connected to the output end of the first motor (207) through screws, and the small gear (208) is meshed with the large gear (202).

5. The automatic precooling air quenching apparatus according to claim 4, wherein: the spray assembly (21) comprises:

the mounting seats (211) are arranged at the bottom ends of the left sliding block (204) and the right sliding block (204);

the first rotating seat (212) is rotatably connected to the inner side of the mounting seat (211) through a pin shaft;

the second rotating seat (213) is rotatably connected to the center position of the bottom end of the first rotating seat (212) through a pin shaft, and the axis of the second rotating seat (213) extends out of the top end of the first rotating seat (212);

the spray head pipe (674) is arranged at the bottom end of the second rotating seat (213) in the left-right direction, and the spray head pipe (214) is connected with the atomizing unit (5) through a guide pipe;

wherein, the inner side of the mounting seat (211) is provided with an angle adjusting unit.

6. The automatic precooling air quenching apparatus as claimed in claim 5, wherein: the angle adjusting unit includes:

the second motor (215) is arranged on the left side of the mounting seat (211), the output end of the second motor (215) extends into the inner side of the mounting seat (211), and the second motor (215) is controlled by a PLC control system (15);

a first pulley (216) screwed to the output of the second motor (215);

and the second belt pulley (217) is connected with the left axis of the first rotating seat (212) in a key mode, and the second belt pulley (217) is connected with the first belt pulley (216) in a belt transmission mode.

7. The automatic precooling air quenching apparatus according to claim 6, wherein: the angle adjusting unit further includes:

the third rotating seat (218) is rotatably connected to the right side of the mounting seat (211) through a pin shaft;

the third motor (219) is arranged at the bottom end of the third rotating seat (218), and the top end of the third motor (219) extends out of the top end of the third rotating seat (218);

a third pulley (2110) screwed to the output end of the third rotating base (218);

the arc-shaped sliding groove (2111) is formed in the right side of the mounting seat (211);

and the fourth belt pulley (2112) is connected with the top end of the axis of the second rotating seat (213) in a key connection mode, the fourth belt pulley (2112) is connected with the third belt pulley (2110) through belt transmission, and a transmission belt penetrates through the inner cavity of the arc-shaped sliding groove (2111).

Technical Field

The invention relates to the technical field of heat treatment equipment, in particular to an automatic precooling air quenching device.

Background

The aluminum alloy is a non-ferrous metal structural material which is most widely applied in industry, is widely applied in aviation, aerospace, automobiles, mechanical manufacturing, ships and chemical industry, the rapid development of industrial economy has increased the demand on aluminum alloy welding structural parts, the research on the weldability of the aluminum alloy is also deepened, the aluminum alloy has low density, higher strength which is close to or more than that of high-quality steel, good plasticity, can be processed into various sections, has excellent electrical conductivity, thermal conductivity and corrosion resistance, is widely used in industry, and has the use amount which is second to that of the steel;

in the prior art, the quenching modes adopted by the aluminum alloy part mainly comprise an immersion water quenching mode and a pure air quenching mode; the cooling speed is very high due to the large specific heat capacity of water, and the cooling speed cannot be controlled; for pure air quenching, the cooling air temperature cannot be controlled due to large environmental temperature difference all the year round, so that the workpiece cooling speed is unstable; the two main drawbacks of the prior art with respect to the device of the present invention are the following: 1. the cooling speed is very high during water quenching, and the workpiece is easy to deform seriously during quenching or cooling; even the quenching defects such as cracking and the like occur; 2. the cooling speed of the workpiece cannot be controlled, and the final mechanical property of the workpiece is influenced; 3. for thin-wall parts, the transfer time is too long, so that the temperature is reduced too much after discharging and before the workpiece enters water, and the mechanical properties are unqualified after heat treatment; 4. the charging basket is quenched in water for a long time, so that the charging basket is seriously corroded and is damaged quickly; meanwhile, the quenching liquid is polluted, and the appearance of the workpiece is influenced; 5. when pure air quenching is carried out, cooling air fluctuates greatly along with the change of the environmental temperature in four seasons, so that the cooling speed of a workpiece is unstable, and the final mechanical property of a product is seriously influenced.

Disclosure of Invention

The invention aims to provide an automatic precooling air quenching device, which at least solves the problem that the workpiece cooling speed and the cooling air temperature cannot be accurately controlled in the existing water quenching and partial air quenching processes in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an automatic precooling air quenching device, comprising:

a shell of the air quenching device;

the PLC control system is arranged on the outer side of the shell of the air quenching device;

the air conditioning unit is arranged on the outer side of the air quenching device shell;

the heat exchanger is arranged at an opening at the top end of the inner cavity of the shell of the air quenching device, the air conditioning unit is connected with the heat exchanger through a pipeline, and the top end of the heat exchanger is communicated with the outside;

the air inlet fan is arranged in the heat exchanger and is positioned below the joint of the air conditioning unit and the heat exchanger pipeline;

the atomizing unit is arranged on the outer side of the shell of the air quenching device and can be connected with an external water pipe;

the spraying device is arranged at the top end of the inner cavity of the shell of the air quenching device;

the exhaust fan is arranged on the outer side of the air quenching device shell, and an air inlet pipe of the exhaust fan extends into an inner cavity of the air quenching device shell;

the exhaust pipeline is arranged at the top air outlet of the exhaust fan;

the charging basket conveying roller is arranged in the center of the inner cavity of the shell of the air quenching device along the front-back direction;

the charging basket is placed on the surface of the charging basket conveying roller;

the number of the air quenching chamber lifting doors is two, the two air quenching chamber lifting doors are respectively arranged at openings at the front side and the rear side of the shell of the air quenching device, and the front side and the rear side of the charging basket conveying roller respectively extend out of inner cavities of the front air quenching chamber lifting door and the rear air quenching chamber lifting door;

the heating furnace is arranged on the rear side of the air quenching device shell;

and the discharging conveyer belt is arranged in the inner cavity of the heating furnace and is positioned at the same height position at the rear side of the charging basket conveying roller.

The spraying device comprises: the device comprises a mounting plate, a lifting cylinder, a mounting frame body, a guide groove, a lifting slide rod, an amplification assembly and a spraying unit; the number of the mounting plates is two, and the two mounting plates are respectively arranged on the left side and the right side of an inner cavity of a shell of the air quenching device; the number of the lifting cylinders is two, and the two lifting cylinders are respectively arranged at the front end and the rear end of the inner sides of the left mounting plate and the right mounting plate; the mounting frame body is fixed at the top ends of the two rear lifting slide bars along the front-rear direction; the number of the lifting slide bars is two, and the two lifting slide bars are respectively fixed in the sliding sleeves at the tops of the left mounting plate and the right mounting plate;

the number of the amplification assemblies is a plurality, and the plurality of amplification assemblies are arranged on the inner side of the mounting frame body from front to back in a clearance manner; the number of the spraying assemblies is a plurality, and the plurality of spraying devices are respectively arranged at the bottom ends of the plurality of spraying devices; and the lifting cylinder and the spraying unit are connected with an external PLC control system.

The amplification assembly comprises: the amplification component comprises an amplification component shell, a large gear, a sliding rail, a sliding block, a guide rod and a limiting sliding block; the amplification component shell is arranged on the inner side of the mounting frame body through a support, and the bottom end of the amplification component shell is communicated with the outside; the large gear is rotatably connected to the center of the top end of the amplification component shell through a pin shaft; the number of the slide rails is two, and the two slide rails are respectively arranged on the left side and the right side of the inner cavity of the amplification component cover body along the front-back direction; the number of the sliding blocks is two, and the two sliding blocks are respectively sleeved on the outer walls of the left sliding rail and the right sliding rail; the slide groove rods are arranged on the inner sides of the left slide block and the right slide block along the left-right direction; the limiting slide block is rotatably connected to the bottom end of the large gear through a pin shaft and is inserted into the inner cavity of the sliding chute rod.

The amplification assembly further comprises; a first motor and pinion; the first motor is arranged in an inner cavity of the amplification component shell and is controlled by an external PLC control system; and a pinion screw is connected to the output end of the first motor, and the pinion is meshed with the large gear.

The spraying device comprises: the spray nozzle comprises a mounting seat, a first rotating seat, a second rotating seat and a spray nozzle pipe; the mounting seats are arranged at the bottom ends of the left sliding block and the right sliding block; the first rotating seat is rotatably connected to the inner side of the mounting seat through a pin shaft; the second rotating seat is rotatably connected to the center of the bottom end of the first rotating seat through a pin shaft, and the axis of the second rotating seat extends out of the top end of the first rotating seat; the spray head pipe is arranged at the bottom end of the second rotating seat along the left-right direction and is connected with the atomizing unit through a guide pipe; wherein, the inboard of mount pad is provided with angle modulation unit.

The angle adjusting unit includes: the second motor, the first belt pulley and the second belt pulley; the second motor is arranged on the left side of the mounting seat, the output end of the second motor extends into the inner side of the mounting seat, and the second motor is controlled by an external PLC control system; the first belt pulley is connected with the output end of the second motor through a screw; the second belt pulley key joint is in the left side axle center of first rotation seat, the second belt pulley passes through belt transmission with first belt pulley and is connected.

The angle adjusting unit further includes: the third rotating seat, the third motor, the third belt pulley, the arc-shaped chute and the fourth belt pulley; the third rotating seat is rotatably connected to the right side of the mounting seat through a pin shaft; the third motor is arranged at the bottom end of the third rotating seat, and the top end of the third motor extends out of the top end of the third rotating seat; the third belt pulley is connected with the output end of the third rotating seat through a screw; the arc-shaped sliding groove is formed in the right side of the mounting seat; the fourth belt pulley key joint is in the axle center top of seat is rotated to the second, fourth belt pulley and third belt pulley pass through belt transmission and connect, and driving belt passes arc spout inner chamber.

Compared with the prior art, the invention has the beneficial effects that: the automatic precooling air quenching device comprises:

1. the lifting cylinder extends and shortens to drive the amplification component to drive the spray head pipe in the spraying device to lift to a specified height position, the first motor drives the pinion to rotate, the bull gear drives the limiting slide block to reciprocate left and right in the inner cavity of the chute rod under the action of the rotating force of the pinion, the sliding groove rod drives the sliding block to drive the spray head pipe in the spraying assembly to reciprocate back and forth under the limiting action of the sliding rail to increase the spraying area, the second motor drives the first belt pulley to rotate, the second belt pulley drives the first rotating seat to drive the second rotating seat to drive the spray head pipe to swing under the rotating force action of the first belt pulley, so that the spray head pipe can spray in a fan shape, the third motor drives the third belt pulley to rotate, and the fourth belt pulley drives the second rotating seat to drive the spray head pipe to rotate under the rotating force action of the third belt pulley so as to change the spraying direction of the spray head pipe;

2. after the air-conditioning unit works, the heat exchanger is cooled, after the air inlet fan is started, normal temperature air exchanges heat and is cooled through the heat exchanger, and then the air is blown into the shell of the air quenching device through the air inlet fan to be cooled, the charging basket in the heating furnace is conveyed to the surface of a charging basket conveying roller through a discharging conveying belt, the air flow in the shell of the air quenching device is sucked into an exhaust pipeline through the exhaust fan to be exhausted and circulated, so that workpieces in the charging basket enter the air quenching cooling process, after the air quenching time is up, the air inlet fan, the air-conditioning unit and the exhaust fan are closed, an electric door of a front side air quenching chamber is opened, and the charging basket conveying roller moves the charging basket out of the shell of the air quenching device to finish cooling;

therefore, automatic air quenching can be realized after the aluminum alloy section is heated, the temperature of cooling air can be constantly output and is not influenced by the environmental temperature, the cooling speed of the workpiece is accelerated, the temperature drop in the quenching transfer process is less, the product quality can be effectively ensured, the transfer time is short for thin-wall parts, the deformation of the quenched workpiece is less, and the final mechanical property of the workpiece is ensured.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a right side sectional view of FIG. 1

FIG. 3 is a schematic structural view of the spray mechanism of FIG. 1;

FIG. 4 is a schematic diagram of the amplification assembly of FIG. 3;

fig. 5 is a schematic view of the spray assembly of fig. 3.

In the figure: 1. a housing of the air quenching device, 2, a cold air unit, 3, a heat exchanger, 4, an air inlet fan, 5, an atomizing unit, 6, an atomizing device, 15, a mounting plate, 16, a lifting cylinder, 17, a mounting frame body, 18, a guide rod, 19, a sliding sleeve, 20, an amplification component, 201, an amplification component cover body, 202, a gearwheel, 203, a sliding rail, 204, a sliding block, 205, a sliding groove rod, 206, a limit sliding block, 207, a first motor, 208, a pinion, 21, an atomizing component, 211, a mounting seat, 212, a first rotating seat, 213, a second rotating seat, 214, a nozzle pipe, 215, a second motor, 216, a first belt pulley, 217, a second belt pulley, 218, a third rotating seat, 219, a third motor, 2110, a third belt pulley, 2111, an arc-shaped sliding groove, 2112, a fourth belt pulley, a conveying roller, 11, a PLC control system, 7, an exhaust pipeline, 8, an exhaust fan, 9, a material basket, 10. a charging basket, 12, an air quenching chamber lifting door, 13, a heating furnace, 14 and a discharging conveyer belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an automatic precooling air quenching device, comprising: the air quenching device comprises an air quenching device shell 1, an air conditioning unit 2, a heat exchanger 3, an air inlet fan 4, an atomizing unit 5, a spraying device 6, an exhaust fan 8, an exhaust pipeline 7, a charging basket conveying roller 9, a charging basket 10, an air quenching chamber lifting door, a PLC (programmable logic controller) control system 11, a heating furnace 13 and a discharging conveying belt 14; the air conditioning unit 2 is arranged outside the air quenching device shell 1; the heat exchanger 3 is arranged at an opening at the top end of an inner cavity of the shell 1 of the air quenching device, the air conditioning unit 2 is connected with the heat exchanger 3 through a pipeline, the top end of the heat exchanger 3 is communicated with the outside, and the heat exchanger 3 is connected with the air conditioning unit 2 through a pipeline for forced refrigeration; the air inlet fan 4 is arranged in the heat exchanger 3 and is positioned below the pipeline connection part of the air conditioning unit 2 and the heat exchanger 3, the air inlet fan 4 is directly purchased, installed and used from the market according to the actual use requirement, and the air inlet fan 4 adopts variable frequency control, so that the air volume and the air pressure of the fan can be conveniently adjusted; the atomizing unit 5 is arranged on the outer side of the air quenching device shell 1, the atomizing unit 5 can be connected with an external water pipe, the specific use model of the atomizing unit 5 is directly purchased, installed and used from the market according to the actual use requirement, and the atomizing unit 5 can atomize an internal water source; the spraying device 6 is arranged at the top end of the inner cavity of the air quenching device shell 1; the exhaust fan 8 is arranged on the outer side of the air quenching device shell 1, an air inlet pipe of the exhaust fan 8 extends into an inner cavity of the air quenching device shell 1, the specific use model of the exhaust fan 8 is directly purchased, installed and used from the market according to the actual use requirement, and the exhaust fan 8 is controlled by frequency conversion, so that the air quantity and the air pressure of the fan can be conveniently adjusted; the exhaust duct 7 is arranged at an air outlet at the top end of the exhaust fan 8, and the top end of the exhaust duct 7 extends out of the room; the charging basket conveying roller 9 is arranged at the center of the inner cavity of the air quenching device shell 1 along the front-back direction, the charging basket conveying roller 9 is directly purchased, installed and used from the market according to the actual use requirement, and the charging basket conveying roller 9 can adopt a roller or a chain to horizontally convey the charging basket 10; the charging basket 10 is placed on the surface of the charging basket conveying roller 9; the number of the air quenching chamber lifting doors 12 is two, the two air quenching chamber lifting doors 12 are respectively arranged at openings at the front side and the rear side of the air quenching device shell 1, inner cavities of the front air quenching chamber lifting door 12 and the rear air quenching chamber lifting door 12 respectively extend from the front side and the rear side of the charging basket conveying roller 9, and the specific lifting power of the air quenching chamber lifting doors 12 can adopt various modes such as electric, pneumatic and hydraulic modes; the heating furnace 13 is arranged at the rear side of the air quenching device shell 1, the specific use model of the heating furnace 13 can be ordered in a professional heat treatment furnace manufacturer according to the actual use requirement, and a lifting sealing door is arranged at the outlet of the heating furnace 13; discharging conveyer belt 14 sets up the inner chamber at heating furnace 13, and discharging conveyer belt 14 is located the same high position in charging basket transfer roller 9 rear side, and discharging conveyer belt 14 is makeed by heating furnace 13 provider in the lump, and discharging conveyer belt 14 can be carried the aluminum alloy material after heating furnace 13 internal heating to in the air quenching device shell 1.

Preferably, the spraying device 6 further includes: the device comprises a mounting plate 15, a lifting cylinder 16, a mounting frame body 17, a lifting slide rod 18, a sliding sleeve 19, an amplification component 20 and a spraying component 21; the number of the mounting plates 15 is two, and the two mounting plates 15 are respectively arranged on the left side and the right side of the inner cavity of the air quenching device shell 1; the number of the lifting cylinders 16 is two, the two lifting cylinders 16 are respectively arranged at the front end and the rear end of the inner sides of the left mounting plate 15 and the right mounting plate 15, the lifting cylinders 16 are specifically purchased, installed and used from the market according to actual use requirements, and the extension and the shortening of the lifting cylinders 16 can be controlled by the PLC 11; the mounting frame body 17 is arranged at the top ends of the front lifting slide bar 18 and the rear lifting slide bar 18 along the front-rear direction; the number of the sliding sleeves 18 is two, and the two lifting sliding rods are respectively inserted into the sliding sleeves 18; the number of the lifting slide bars 18 is two, the two lifting slide bars 18 are respectively inserted into the inner cavities of the left and right slide sleeves 19, the top ends of the lifting slide bars 18 are respectively fixedly connected with the left and right sides of the installation frame body 17, and the lifting slide bars 18 can move up and down in the inner cavities of the slide sleeves 19 to limit the installation frame body 17; the number of the amplification assemblies 20 is several, and the plurality of amplification assemblies 20 are arranged on the inner side of the mounting frame body 17 from front to back in a clearance manner; the number of the spraying assemblies 21 is several, and the several spraying assemblies 21 are respectively arranged at the bottom ends of the several amplification assemblies 20.

Preferably, the amplification module 20 further includes: the amplification component comprises an amplification component cover body 201, a large gear 202, a sliding rail 203, a sliding block 204, a sliding groove rod 205, a limiting sliding block 206, a first motor 207 and a small gear 208; the amplification component cover body 201 is arranged on the inner side of the mounting frame body 17 through a support, and the bottom end of the amplification component cover body 201 is communicated with the outside; the bull gear 202 is rotatably connected to the top center of the amplification component shell 201 through a pin; the number of the slide rails 203 is two, and the two slide rails 203 are respectively arranged on the left side and the right side of the inner cavity of the amplification component cover body 201 along the front-back direction; the number of the sliding blocks 204 is two, and the two sliding blocks 204 are respectively sleeved on the outer walls of the left sliding rail 203 and the right sliding rail 203; the chute rods 205 are arranged on the inner sides of the left and right sliders 204 in the left-right direction; the limiting sliding block 206 is rotatably connected to the bottom end of the large gear 202 through a pin shaft, and the limiting sliding block 206 is inserted into the inner cavity of the sliding chute rod 205; the first motor 207 is arranged in the inner cavity of the amplification component shell 201, the first motor 207 is connected with the PLC control system 11, the specific use model of the first motor 207 is directly purchased from the market and installed and used according to the actual use requirement, and the first motor 207 can be controlled by the PLC control system 11 to drive the pinion 208 to rotate; the small gear 208 is screwed on the output end of the first motor 207, the small gear 208 is meshed with the large gear 202, and the large gear 202 can drive the limiting slide block 206 to rotate circumferentially around the axis of the large gear 202 under the rotating force of the small gear 208.

Preferably, the spraying assembly 21 further includes: a mounting seat 211, a first rotating seat 212, a second rotating seat 213, and a head pipe 214; the mounting seats 211 are arranged at the bottom ends of the left and right sliding blocks 214; the first rotating base 212 is rotatably connected to the inner side of the mounting base 211 through a pin; the second rotating base 21 is rotatably connected to the center position of the bottom end of the first rotating base 212 through a pin shaft, and the axis of the second rotating base 213 extends out of the top end of the first rotating base 212; the nozzle pipe 214 is arranged at the bottom end of the second rotating seat 213 along the left-right direction, and the nozzle pipe 214 is connected with the atomizing unit 5 through a guide pipe; wherein, the inner side of the mounting seat 211 is provided with an angle adjusting unit; the angle adjusting unit includes: a second motor 215, a first belt pulley 216, a second belt pulley 217, a third rotating seat 218, a third motor 219, a third belt pulley 2110, an arc chute 2111 and a fourth belt pulley 2112; the second motor 215 is arranged at the left side of the mounting seat 211, the output end of the second motor 215 extends into the inner side of the mounting seat 211, the second motor 215 is connected with the PLC control system 11, the specific usage model of the second motor 215 is directly purchased from the market and installed and used according to the actual usage requirement, and the second motor 215 can be controlled by the PLC control system 11 to drive the first belt pulley 216 to rotate clockwise or anticlockwise; the first belt pulley 216 is screwed at the output end of the second motor 215; the second belt pulley 217 is in key connection with the left axis of the first rotating seat 212, and the second belt pulley 217 is in transmission connection with the first belt pulley 216 through a belt; the third rotating base 218 is rotatably connected to the right side of the mounting base 211 through a pin; the third motor 219 is arranged at the bottom end of the third rotating seat 218, the top end of the third motor 219 extends out of the top end of the third rotating seat 218, the specific usage model of the third motor 219 is directly purchased, installed and used from the market according to the actual usage requirement, and the third motor 219 can be controlled by the PLC control system 11 to drive the third belt pulley 2110 to rotate clockwise or counterclockwise; the third pulley 2110 is screwed to the output end of the third rotating base 218; the arc chute 2111 is arranged on the right side of the mounting seat 211; the fourth pulley 2112 is keyed on the top end of the axial center of the second rotating seat 213, the fourth pulley 2112 and the third pulley 2110 are connected by a belt, and the transmission belt passes through the inner cavity of the arc chute 2111, and the first rotating seat 212 can drive the connection between the fourth pulley 2112 and the third pulley 2110 to move in an arc in the arc chute 2111 during the automatic rotation process.

All the electric parts in the scheme can be connected with an external adaptive power supply through a lead, and an adaptive external controller is selected to be connected according to specific actual use conditions so as to meet the control requirements of all the electric parts.

Step 1: the worker controls the atomizer set 5 to start to spray atomized water mist into the housing 1 of the air quenching device through the nozzle pipe 214, the worker controls the lift cylinder 16, the first motor 207, the second motor 215 and the third motor 219 to start sequentially, the lift cylinder 16 extends and shortens by itself, so that the mounting frame body 17 drives the amplification assembly 20 to drive the nozzle pipe 214 inside the spray assembly 21 to lift to a specified height position under the limiting action of the sliding sleeve 18, the first motor 207 drives the pinion 208 to rotate, so that the large gear 202 drives the limit slider 206 to rotate circumferentially around the axis of itself under the rotating force of the pinion 208, and the limit slider 206 reciprocates left and right in the inner cavity of the sliding chute rod 205, so that the limit slider 206 drives the sliding chute rod 205 to reciprocate back and forth, and the sliding chute rod 205 drives the slider 204 to drive the nozzle pipe 214 inside the spray assembly 21 to reciprocate back and forth under the limiting action of the sliding rail 203 to increase the spraying area, the second motor 215 drives the first pulley 216 to rotate clockwise or counterclockwise, and since the first pulley 216 and the second pulley 217 are connected by a belt, the second pulley 217 drives the first rotating base 212 to rotate with the rotating connection position with the pin shaft inside the mounting base 211 as a vertex under the rotating force of the first pulley 216, and the first rotating base 212 drives the second rotating base 213 to drive the nozzle tube 214 to swing, so that the nozzle pipe 214 can spray in a fan shape, the third motor 219 drives the third pulley 2110 to rotate clockwise or counterclockwise, since the fourth pulley 2112 is connected to the third pulley 2110 by a belt transmission, the fourth pulley 2112 drives the second rotating seat 213 to rotate the nozzle tube 214 under the rotation force of the third pulley 2110, so as to change the spraying direction of the nozzle pipe 214, thereby improving the spraying effect of the nozzle pipe 214 and realizing the cooling;

step 2: when the charging basket 10 moves to the position of a discharge hole on the surface of a discharge conveyer belt 14, a worker controls a refrigerating unit 2, an air inlet fan 4 and an exhaust fan 8 to be sequentially started, the refrigerating unit 2 cools a heat exchanger 3 after working, normal temperature air is subjected to heat exchange cooling through the heat exchanger 3 after the air inlet fan 4 is started, and then is blown into an air quenching device shell 1 through the air inlet fan 4 to be cooled, after the starting is completed, the starting process is about 2-3min, a rear side air quenching chamber lifting door 12 is opened, the charging basket 10 in a heating furnace 13 is fed into the surface of a charging basket conveying roller 9 by the discharge conveyer belt 14 and enters the air quenching device shell 1, the rear side air quenching chamber lifting door 12 is closed, the exhaust fan 8 is opened to enable air flow in the air quenching device shell 1 to be sucked into an exhaust pipeline 7 to be exhausted for air circulation, so that workpieces in the charging basket 10 enter the air quenching cooling process, after the air quenching time is up, the air inlet fan 4, the air conditioning unit 2 and the exhaust fan 8 are closed, the lifting door 12 of the front side air quenching chamber is opened, and the charging basket conveying roller 9 moves the charging basket 10 out of the air quenching device shell 1 to finish cooling;

therefore, automatic air quenching can be realized after the aluminum alloy section is heated, the temperature of cooling air can be constantly output and is not influenced by the environmental temperature, the cooling speed of the workpiece is accelerated, the temperature drop in the quenching transfer process is less, the product quality can be effectively ensured, the transfer time is short for thin-wall parts, the deformation of the quenched workpiece is less, and the final mechanical property of the workpiece is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.