CN212581972U - Constant temperature system for heat treatment - Google Patents

Abstract

The utility model discloses a constant temperature system for thermal treatment, the layer board is rotationally movable mounting in the cooler bin, is provided with the rotation mechanism who is connected with the layer board transmission on the cooler bin, is provided with the location boss along the circumference equipartition on the layer board, has seted up the wind hole corresponding with the location boss on the layer board, has seted up into the wind gap at the cooler bin top, has seted up the air exit on the cooler bin of layer board below, is provided with interior concave part on the cooler bin of layer board top, set up the groove of dodging corresponding with the location boss including on the both sides wall of concave part, cold and hot wind mixing mechanism is provided with the baffle including bellows and baffle, is provided with the baffle in bellows, separates for cold wind chamber and hot-blast chamber through the baffle with bellows internal partitioning, the utility model discloses the: the cooling air flow is distributed very uniformly, so that the cooling effect is greatly improved, the hot air after the rivet is cooled is recycled, the purpose of saving energy consumption is realized, the production cost is effectively reduced, and the rivet cooling device is very environment-friendly.

Description

Constant temperature system for heat treatment

Technical Field

The utility model relates to a cooling system's technical field, more specifically say so and relate to rivet cooling system for thermal treatment's technical field.

Background

The rivet is a connecting member for fixing and pressing, and is required to have good mechanical properties because it is deformed when being subjected to blind riveting, and is required to have not only high strength but also certain toughness. The rivet is usually made by plastic processing, the metallographic structure in the rivet is damaged during processing, and if the rivet is not subjected to heat treatment, the strength of the rivet is low and the rivet is easy to damage, so that the rivet needs to be subjected to heat treatment after processing, and the heat treatment is to change the internal structure of the material on the premise of not changing the chemical structure of the material so as to meet the expected performance requirement. After the rivet is subjected to heat treatment, the rivet needs to be cooled by air through a constant temperature system, and when the constant temperature system works, cold air generated by a cold air source and hot air generated by a hot air source are adjusted and mixed by a cold and hot air mixing mechanism to obtain cooling air with proper temperature, and then the rivet is cooled by the cooling air, however, the constant temperature system has the following defects: firstly, when the traditional rivet air cooling equipment cools the rivets, the cooling time of the single rivet is different, the cooling time of the single rivet cannot be accurately controlled, and the cooling air flow in the cooling equipment is not very uniform, so that the best cooling effect cannot be achieved; secondly, the hot air source needs to consume a large amount of electric energy when generating hot air, thereby increasing the production cost and not saving energy; thirdly, the cold and hot air mixing mechanism of the constant temperature system has a complex structure, high manufacturing cost, inconvenient cold and hot air proportion adjustment operation and poor cold and hot air adjustment effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned not enough and provide a but accurate control cooling time, the cooling air distribution is even, can make the rivet all reach the best cooling effect to can realize the streamlined operation, improve production efficiency, can reduce energy consumption and manufacturing cost, and simple structure, cold and hot wind regulation operation convenient and fast adjusts effectual constant temperature system for the thermal treatment.

The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:

a constant temperature system for heat treatment comprises a cooling box, a supporting plate, a blowing fan, a return air fan, a cold and hot air mixing mechanism, a first temperature sensor and a control cabinet, wherein the supporting plate is rotatably and movably arranged in the cooling box, a rotating mechanism in transmission connection with the supporting plate is arranged on the cooling box, positioning bosses which are uniformly distributed along the circumferential direction are arranged on the supporting plate, air holes corresponding to the positioning bosses are formed in the supporting plate, an air inlet is formed in the top of the cooling box, an air outlet is formed in the cooling box below the supporting plate, an inner concave part is formed in the cooling box above the supporting plate, avoiding grooves corresponding to the positioning bosses are formed in two side walls of the inner concave part, the cold and hot air mixing mechanism comprises an air box and a baffle, a baffle is arranged in the air box, the inner part of the air box is divided into a cold air cavity and a hot air cavity through the baffle, and a cold air inlet and a hot, the top of bellows is the opening form, baffle activity is planted at the opening part at bellows top, is provided with the guiding mechanism corresponding with the baffle on bellows, has seted up mixed exhaust vent and waste heat wind hole on the baffle, the fan of blowing is linked together with the income wind gap that mixes exhaust vent and cooler bin, and the return air fan is linked together with the air exit of hot-blast import and cooler bin, first temperature sensor is fixed to be worn to put in the income wind gap of cooler bin, the switch board is connected with fan of blowing, return air fan, rotation mechanism, guiding mechanism and first temperature sensor electricity.

The adjusting mechanism comprises a casing, a screw rod, a threaded sleeve, a rotating shaft and a second motor, a support is arranged at the top of the air box, a through groove corresponding to the opening at the top of the bellows is arranged on the support, a guide groove communicated with the through groove is arranged on the support, the baffle is movably inserted in the guide groove of the support, the machine shell is fixedly arranged on the support, the rotating shaft and the threaded sleeve are respectively and movably arranged on the machine shell, a first gear and a second gear are respectively arranged on the rotating shaft and the threaded sleeve, the first gear is meshed with the second gear, an avoidance groove corresponding to the first gear and the second gear is arranged on the shell, the second motor is fixedly arranged on the shell and is in transmission connection with the rotating shaft, the screw rod is arranged in the threaded sleeve in a rotating mode, one end portion of the screw rod is fixedly connected with the baffle through the connecting seat, and the control cabinet is electrically connected with the second motor of the adjusting mechanism.

The shell is provided with a first shaft hole and a second shaft hole, and the rotating shaft and the threaded sleeve are respectively and movably arranged in the first shaft hole and the second shaft hole in a penetrating mode.

The cold and hot air mixing mechanism further comprises a surplus hot air discharge pipe, a mixed air outlet pipe is arranged at the mixed air outlet of the baffle, the surplus hot air discharge pipe is fixedly mounted on the mixed air outlet pipe through a cover plate, and the surplus hot air discharge pipe corresponds to the surplus hot air outlet.

It is still including the heating wire the air intake department intercommunication of fan of blowing has first pipeline, and first pipeline is linked together through bellows and mixed air-out pipe, and the air outlet of fan of blowing is linked together through the income wind gap of fifth pipeline with the cooler bin, the air intake of return air fan is linked together through the air exit of second pipeline with the cooler bin, and the air outlet of return air fan is linked together through third pipeline and hot-blast import, and it has the fourth pipeline to communicate in unnecessary hot-blast discharge pipe department, heating wire fixed mounting is in first pipeline, the switch board is connected with the heating wire electricity.

The control cabinet is electrically connected with the second temperature sensor and the third temperature sensor.

The rotary mechanism comprises a first motor and a speed reducer, the speed reducer is fixedly installed at the bottom of the cooling box, the first motor is fixedly installed on the speed reducer and is in transmission connection with the speed reducer, an output shaft of the speed reducer penetrates through the cooling box, the supporting plate is fixedly installed on an output shaft of the speed reducer located in the cooling box, and the control cabinet is electrically connected with the first motor and the speed reducer of the rotary mechanism.

The cooling box comprises an upper shell and a lower shell, flange plates are respectively arranged on the edges of the upper shell and the lower shell, and the upper shell and the lower shell are fixedly connected through the flange plates.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is:

1. the support plate is driven to rotate by the slewing mechanism, the support plate rotates by an angle at intervals, the angle is an included angle formed by adjacent positioning bosses with the rotation axis of the support plate as the center of a circle, when the support plate does not rotate, rivets to be cooled are sleeved on the positioning bosses positioned at the inner concave part in a manual or mechanical way, when the support plate rotates, the rivets are sent into the cooling box from the avoiding groove of one side wall of the inner concave part, when the support plate rotates once, one positioning boss sleeved with the rivets in the cooling box moves to the outside of the cooling box from the avoiding groove of the other side wall of the inner concave part, the rivets are taken down from the positioning bosses in a manual or mechanical way, and the cooling process of the rivets can be completed, therefore, for the operation of sending the rivets to be cooled into the cooling box and taking the cooled rivets out of the cooling box, the uncooled rivets on the positioning bosses and the positioning bosses from the inner concave part only need to be placed on the positioning bosses and taken out of the cooled rivets in the inner concave part The cooled rivet is taken down from the positioning boss, so that the streamlined operation can be realized, and the production efficiency is effectively improved. Because every rivet gets into the cooler bin from the groove of dodging of an interior concave part lateral wall to wearing out the cooler bin from the groove of dodging of another lateral wall of interior concave part, the angle that it was rotated is the same, consequently make the cooling time of every rivet all the same, thereby accurate control has been realized to the cooling time of single rivet, the wind hole has all been seted up in every location boss department of layer board simultaneously, cooling air flows when flowing from every wind hole, all good cooling has been carried out the rivet of cover on the location boss of this wind hole department, cooling air distributes very evenly, thereby the cooling effect has been improved by a wide margin.

2. The hot air after cooling the rivet in the cooling box is returned through the return air fan and is discharged to the hot-blast intracavity, mixes the cooling air that obtains suitable temperature with the cold wind in the cold wind intracavity again to carry out cyclic utilization to the hot air after cooling the rivet, realized energy saving's purpose, effectively reduced manufacturing cost, very environmental protection.

3. The baffle can be driven to move left and right through the adjusting mechanism, the separation proportion of the baffle to the mixed air outlet holes is adjusted, when the baffle moves left, hot air entering the mixed air outlet pipe from the hot air cavity is gradually increased, hot air discharged into the redundant hot air outlet pipe from the hot air cavity is gradually reduced, and cold air entering the mixed air outlet pipe from the cold air cavity is gradually reduced, so that the temperature of cooling air entering the cooling box can be increased; when the baffle moves rightwards, hot air entering the mixing air outlet pipe from the hot air cavity is gradually reduced, hot air discharged into the redundant hot air outlet pipe from the hot air cavity is gradually increased, cold air entering the mixing air outlet pipe from the cold air cavity is gradually increased, the temperature of cooling air entering the cooling box can be reduced, the cold-hot air proportion can be quickly adjusted, the operation is very convenient, the cold-hot air adjusting effect is good, the cold-hot air mixing mechanism is simple in structure, the manufacturing cost is low, and the assembly and the maintenance are convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the cold and hot air mixing mechanism in FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 2 at C;

FIG. 6 is an enlarged partial schematic view of FIG. 1 at D;

FIG. 7 is a schematic view of the structure of the cooling tank of FIG. 1;

FIG. 8 is a schematic cross-sectional view of FIG. 7;

FIG. 9 is a cross-sectional view V-V of FIG. 7;

FIG. 10 is an enlarged partial view at M of FIG. 7;

fig. 11 is a partially enlarged view of N in fig. 8.

Detailed Description

As shown in fig. 1, the constant temperature system for heat treatment comprises a cooling box 1, a supporting plate a5, a blowing fan 2, an air return fan 3, a cold and hot air mixing mechanism, an electric heating wire 4, a first temperature sensor 5, a second temperature sensor 6, a third temperature sensor 7 and a control cabinet 48, wherein the supporting plate a5 is rotatably and movably mounted in the cooling box 1, a rotating mechanism in transmission connection with the supporting plate a5 is arranged on the cooling box 1, and the mounting mode of the supporting plate a5 in the cooling box 1, the specific structure of the rotating mechanism and the transmission connection relationship between the supporting plate a5 and the rotating mechanism are as follows: as shown in fig. 7 and 8, the swing mechanism includes a first motor A3 and a speed reducer a4, the speed reducer a4 is fixedly installed at the bottom of the cooling box 1, the first motor A3 is fixedly installed on the speed reducer a4 and is in transmission connection with the speed reducer a4, an output shaft a7 of the speed reducer a4 penetrates through the cooling box 1, and the supporting plate a5 is fixedly installed on an output shaft a7 of the speed reducer a4 located in the cooling box 1. As shown in fig. 9 and 11, positioning bosses A8 are provided on a pallet a5, the positioning bosses A8 are uniformly distributed along the circumferential direction, air holes a9 corresponding to the positioning bosses A8 are provided on the pallet a5, air inlets 22 are provided at the top of the cooling box 1, air outlets 23 are provided on the cooling box 1 below the pallet a5, as shown in fig. 9 and 10, concave portions a12 are provided on the cooling box 1 above the pallet a5, and escape grooves a14 corresponding to the positioning bosses A8 are provided on both side walls a13 of the concave portions a 12. The cooling box 1 consists of an upper shell A16 and a lower shell A17, flange plates A15 are respectively arranged at the edges of the upper shell A16 and the lower shell A17, and the upper shell A16 and the lower shell A17 are fixedly connected through the flange plates A15.

As shown in fig. 2 and 3, the cold and hot air mixing mechanism includes an air box 8, a baffle 10 and an excess hot air discharge pipe 11, a partition 13 is disposed in the air box 8, the interior of the air box 8 is partitioned into a cold air chamber 14 and a hot air chamber 15 by the partition 13, a cold air inlet 16 is disposed on a side wall of the cold air chamber 14, and a hot air inlet 17 is disposed on a side wall of the hot air chamber 15. The top of the air box 8 is open, the baffle 10 is movably inserted into the opening at the top of the air box 8, the air box 8 is provided with an adjusting mechanism corresponding to the baffle 10, and the connection relation between the baffle 10 and the air box 8, the specific structure of the adjusting mechanism and the connection relation between the adjusting mechanism and the baffle 10 are as follows: as shown in fig. 5, a support 9 is disposed on the top of the bellows 8, a through groove 18 corresponding to the opening of the top of the bellows 8 is formed on the support 9, a guide groove 19 communicating with the through groove 18 is formed on the support 9, and the baffle 10 is movably inserted into the guide groove 19 of the support 9. As shown in fig. 4, the adjusting mechanism includes a housing 34, a screw 35, a threaded sleeve 36, a rotating shaft 37 and a second motor 38, the housing 34 is fixedly mounted on the support 9, and the rotating shaft 37 and the threaded sleeve 36 are movably mounted on the housing 34 respectively and movably mounted as follows: the housing 34 is provided with a first shaft hole 43 and a second shaft hole 44, and the rotating shaft 37 and the threaded sleeve 36 are movably inserted in the first shaft hole 43 and the second shaft hole 44 respectively. The rotating shaft 37 and the threaded sleeve 36 are respectively provided with a first gear 39 and a second gear 40, the first gear 39 is meshed with the second gear 40, the casing 34 is provided with an avoiding groove 41 corresponding to the first gear 39 and the second gear 40, the second motor 38 is fixedly installed on the casing 34, the second motor 38 is in transmission connection with the rotating shaft 37, the screw 35 is screwed in the threaded sleeve 36, and one end of the screw 35 is fixedly connected with the baffle 10 through a connecting seat 42.

The baffle 10 is provided with a mixed air outlet 20 and a waste heat air outlet 21, and the blowing fan 2 is communicated with the mixed air outlet 20 and an air inlet 22 of the cooling box 1 and communicated with each other in the following way: a mixed air outlet pipe 12 is arranged at the mixed air outlet hole 20 of the baffle 10, a first pipeline 30 is communicated with an air inlet 24 of the blowing fan 2, the first pipeline 30 is communicated with the mixed air outlet pipe 12 through a corrugated pipe 25, and an air outlet 26 of the blowing fan 2 is communicated with an air inlet 22 of the cooling box 1 through a fifth pipeline 47. The first temperature sensor 5 is fixedly arranged in an air inlet 22 of the cooling box 1 in a penetrating manner, and the second temperature sensor 6 and the third temperature sensor 7 are respectively fixedly arranged in a cold air inlet 16 and a hot air inlet 17 of the air box 8 in a penetrating manner. The surplus hot air discharge pipe 11 is fixedly arranged on the mixed air outlet pipe 12 through a cover plate 45, and the surplus hot air discharge pipe 11 corresponds to the surplus hot air hole 21. An air inlet 46 of the return air fan 3 is communicated with an air outlet 23 of the cooling box 1 through a second pipeline 29, an air outlet 31 of the return air fan 3 is communicated with a hot air inlet 17 through a third pipeline 32, a fourth pipeline 33 is communicated with a surplus hot air discharge pipe 11, as shown in fig. 7, the heating wire 4 is fixedly installed in the first pipeline 30, the control cabinet 48 is electrically connected with the blowing fan 2, the return air fan 3, the first motor A3 and the speed reducer a4 of the swing mechanism, the second motor 38 of the adjusting mechanism, the first temperature sensor 5, the second temperature sensor 6, the third temperature sensor 7 and the heating wire 4, the control cabinet 48 adopts a common PLC control cabinet on the market, and the PLC control program in the control cabinet 48 and the specific electrical connection relation with the above components are the prior art in the field, and detailed description is not needed.

The utility model discloses a constant temperature system for heat treatment's theory of operation as follows: the supporting plate A5 is driven to rotate by a first motor A3 and a speed reducer A4, so that the supporting plate A5 rotates at intervals by an angle which is an included angle formed by adjacent positioning bosses A8 and the rotating axis of the supporting plate A5 as a circle center, when the supporting plate A5 does not rotate, rivets to be cooled are sleeved on the positioning bosses A8 at the concave part A12 in a manual mode or a mechanical arm mode, and when the supporting plate A5 rotates, the rivets are fed into the cooling box 1 from an avoiding groove A14 on one side wall of the concave part A12. The cold air inlet 16 of the cold and hot air mixing mechanism is communicated with the cold air source, cold air enters the cold air cavity 14 from the cold air inlet 16, the temperature of the cold air entering the cold air cavity 14 is monitored through the second temperature sensor 6, and under the action of the return air fan 3, hot air after cooling rivets in the cooling box 1 is discharged back to the hot air cavity 15. The cold air in the cold air cavity 14 and a part of hot air in the hot air cavity 15 enter the mixed air outlet pipe 12 from the mixed air outlet hole 20, are mixed to form cooling air with proper temperature, the cooling air is conveyed into the cooling box 1 through the air blowing fan 2 to cool rivets in the cooling box 1, and the cooled air passes through the air outlet hole A9 to enter the cooling box 1 below the supporting plate A5, is discharged from the air outlet 23, and is discharged back into the hot air cavity 15 again for recycling. Unnecessary hot-blast in the hot-blast chamber 15 is discharged from many waste heat wind discharge pipe 11 through waste heat wind hole 21, monitor the cooling air temperature that gets into in cooling tank 1 through first temperature sensor 5, monitor the hot-blast temperature that gets into in hot-blast chamber 15 through third temperature sensor 7, when cooling air temperature or hot-blast temperature skew preset temperature value, adjust the cold and hot wind proportion that gets into mixed air-out pipe 12 through cold and hot wind mixing mechanism, so that the cooling air temperature that gets into in cooling tank 1 maintains in the fit range, the concrete adjustment step of cold and hot wind proportion is as follows: when the temperature monitored by the first temperature sensor 5 or the third temperature sensor 7 is lower than a preset temperature value, the second motor 38 of the adjusting mechanism drives the rotating shaft 37 and the first gear 39 to rotate, the first gear 39 drives the second gear 40 and the threaded sleeve 36 to rotate, the threaded sleeve 36 drives the screw 35 and the baffle 10 to move towards the left direction in fig. 2, so that the hot air entering the mixed air outlet pipe 12 from the hot air cavity 15 is gradually increased, the hot air discharged into the redundant hot air discharge pipe 11 from the hot air cavity 15 is gradually decreased, and the cold air entering the mixed air outlet pipe 12 from the cold air cavity 14 is gradually decreased, so that the proportion of the hot air is increased, the proportion of the cold air is decreased, and the temperature of the cooling air entering the cooling box 1 is increased; when the temperature monitored by the first temperature sensor 5 or the third temperature sensor 7 is higher than a preset temperature value, the adjusting mechanism drives the baffle 10 to move rightwards, so that the hot air entering the mixed air-out pipe 12 from the hot air cavity 15 is gradually reduced, the hot air discharged into the redundant hot air discharge pipe 11 from the hot air cavity 15 is gradually increased, and the cold air entering the mixed air-out pipe 12 from the cold air cavity 14 is gradually increased, so that the proportion of the hot air is reduced, the proportion of the cold air is increased, the temperature of the cooling air entering the cooling box 1 is further reduced, and the temperature of the cooling air entering the cooling box 1 is always maintained in a proper range. When the thermostatic system for heat treatment is started, the temperature of hot air entering the hot air cavity 15 from the hot air inlet 17 is still low, so that the cooling air entering the cooling box 1 needs to be preheated by the heating wire 4, the temperature of the cooling air entering the cooling box 1 after the thermostatic system is started reaches the required temperature as soon as possible, and when the temperature reaches the required value, the heating wire 4 is closed. When the supporting plate A5 rotates once, a positioning boss A8 sleeved with a rivet in the cooling box 1 moves from the position of an avoiding groove A14 on the other side wall of the inner concave part A12 to the outside of the cooling box 1, and the rivet is taken down from the positioning boss A8 through manual work or a mechanical arm and the like, so that the rivet to be cooled is fed into the cooling box 1 and the cooled rivet is taken out from the cooling box 1, and the uncooled rivet is placed on the positioning boss A8 at the position of the inner concave part A12 and the cooled rivet is taken down from the positioning boss A8 through manual work or a mechanical arm and the like, so that the streamlined operation can be realized, and the production efficiency is effectively improved. Because each rivet gets into the cooler bin 1 from the groove a14 of dodging of concave part a12 lateral wall to the groove a14 of dodging from concave part a12 another lateral wall and wears out the cooler bin 1, the angle that it has rotated is the same, consequently, make the cooling time of every rivet all the same, thereby the cooling time to single rivet has realized accurate control, wind hole a9 has all been seted up in every location boss A8 department of layer board a5 simultaneously, cooling air current flows when passing through from every wind hole a9, all cooled off the rivet of cover on the location boss A8 of this wind hole a9 department, cooling air current distribution is very even, thereby cooling effect has been improved by a wide margin.

Claims (8)

1. Constant temperature system for thermal treatment, its characterized in that: the cooling device comprises a cooling box, a supporting plate, a blowing fan, a return air fan, a cold and hot air mixing mechanism, a first temperature sensor and a control cabinet, wherein the supporting plate is rotatably and movably arranged in the cooling box, a rotating mechanism in transmission connection with the supporting plate is arranged on the cooling box, positioning bosses which are uniformly distributed along the circumferential direction are arranged on the supporting plate, air holes corresponding to the positioning bosses are formed in the supporting plate, an air inlet is formed in the top of the cooling box, an air outlet is formed in the cooling box below the supporting plate, an inner concave part is formed in the cooling box above the supporting plate, avoiding grooves corresponding to the positioning bosses are formed in two side walls of the inner concave part, the cold and hot air mixing mechanism comprises an air box and a baffle plate, a partition plate is arranged in the air box, the inside of the air box is divided into a cold air cavity and a hot air cavity through the partition plate, and a cold air inlet, the top of bellows is the opening form, baffle activity is planted at the opening part at bellows top, is provided with the guiding mechanism corresponding with the baffle on bellows, has seted up mixed exhaust vent and waste heat wind hole on the baffle, the fan of blowing is linked together with the income wind gap that mixes exhaust vent and cooler bin, and the return air fan is linked together with the air exit of hot-blast import and cooler bin, first temperature sensor is fixed to be worn to put in the income wind gap of cooler bin, the switch board is connected with fan of blowing, return air fan, rotation mechanism, guiding mechanism and first temperature sensor electricity.

2. The thermostatic system for heat treatment according to claim 1, characterized in that: the adjusting mechanism comprises a casing, a screw rod, a threaded sleeve, a rotating shaft and a second motor, a support is arranged at the top of the air box, a through groove corresponding to the opening at the top of the bellows is arranged on the support, a guide groove communicated with the through groove is arranged on the support, the baffle is movably inserted in the guide groove of the support, the machine shell is fixedly arranged on the support, the rotating shaft and the threaded sleeve are respectively and movably arranged on the machine shell, a first gear and a second gear are respectively arranged on the rotating shaft and the threaded sleeve, the first gear is meshed with the second gear, an avoidance groove corresponding to the first gear and the second gear is arranged on the shell, the second motor is fixedly arranged on the shell and is in transmission connection with the rotating shaft, the screw rod is arranged in the threaded sleeve in a rotating mode, one end portion of the screw rod is fixedly connected with the baffle through the connecting seat, and the control cabinet is electrically connected with the second motor of the adjusting mechanism.

3. The thermostatic system for heat treatment according to claim 2, characterized in that: the shell is provided with a first shaft hole and a second shaft hole, and the rotating shaft and the threaded sleeve are respectively and movably arranged in the first shaft hole and the second shaft hole in a penetrating mode.

4. The thermostatic system for heat treatment according to claim 3, characterized in that: the cold and hot air mixing mechanism further comprises a surplus hot air discharge pipe, a mixed air outlet pipe is arranged at the mixed air outlet of the baffle, the surplus hot air discharge pipe is fixedly mounted on the mixed air outlet pipe through a cover plate, and the surplus hot air discharge pipe corresponds to the surplus hot air outlet.

5. The thermostatic system for heat treatment according to claim 4, characterized in that: it is still including the heating wire the air intake department intercommunication of fan of blowing has first pipeline, and first pipeline is linked together through bellows and mixed air-out pipe, and the air outlet of fan of blowing is linked together through the income wind gap of fifth pipeline with the cooler bin, the air intake of return air fan is linked together through the air exit of second pipeline with the cooler bin, and the air outlet of return air fan is linked together through third pipeline and hot-blast import, and it has the fourth pipeline to communicate in unnecessary hot-blast discharge pipe department, heating wire fixed mounting is in first pipeline, the switch board is connected with the heating wire electricity.

6. The thermostatic system for heat treatment according to claim 1, 2, 3, 4 or 5, characterized in that: the control cabinet is electrically connected with the second temperature sensor and the third temperature sensor.

7. The thermostatic system for heat treatment according to claim 1, 2, 3, 4 or 5, characterized in that: the rotary mechanism comprises a first motor and a speed reducer, the speed reducer is fixedly installed at the bottom of the cooling box, the first motor is fixedly installed on the speed reducer and is in transmission connection with the speed reducer, an output shaft of the speed reducer penetrates through the cooling box, the supporting plate is fixedly installed on an output shaft of the speed reducer located in the cooling box, and the control cabinet is electrically connected with the first motor and the speed reducer of the rotary mechanism.

8. The thermostatic system for heat treatment according to claim 1, 2, 3, 4 or 5, characterized in that: the cooling box comprises an upper shell and a lower shell, flange plates are respectively arranged on the edges of the upper shell and the lower shell, and the upper shell and the lower shell are fixedly connected through the flange plates.

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