Cold and hot air control mechanism of constant temperature system for heat treatment
Technical Field
The utility model relates to a cold and hot wind control mechanism's technical field, the more specifically cold and hot wind control mechanism's for the cooling technical field that says so relates to.
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 air and hot air proportion adjusting 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, the hot air source needs to consume a large amount of electric energy when generating hot air, thereby increasing the production cost and not being very energy-saving; secondly, the cold and hot air proportion adjusting mechanism of the constant temperature system has complex structure, high manufacturing cost, inconvenient cold and hot air proportion adjusting operation and poor cold and hot air adjusting effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned not enough and provide one kind can reduce energy consumption and manufacturing cost, and simple structure, and cold and hot wind regulation operation convenient and fast adjusts effectual constant temperature system's for heat treatment cold and hot wind control mechanism.
The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:
a cold and hot air control mechanism of a constant temperature system for heat treatment comprises a cooling bin, a blowing fan, a return air fan, a cold and hot air proportion adjusting mechanism, a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the cold and hot air proportion adjusting mechanism comprises an air box, a translation mechanism, a support, a baffle, an excess hot air discharge pipe and a mixed air outlet pipe, a partition plate is arranged in the air box, the interior of the air box is divided into a cold air cavity and a hot air cavity through the partition plate, a cold air inlet is formed in the side wall of the cold air cavity, a hot air inlet is formed in the side wall of the hot air cavity, the top of the air box is open, the support is fixedly arranged on the air box, a through groove corresponding to the opening in the top of the air box is formed in the support, a guide groove communicated with the through groove is formed in the support, and the baffle is movably inserted in the, the air outlet of the blowing fan is communicated with the air inlet of the cooling bin, the first temperature sensor is fixedly arranged in the air inlet of the cooling bin, the second temperature sensor and the third temperature sensor are respectively fixedly arranged in a cold air inlet and a hot air inlet of the air box, an air inlet of the return air fan is communicated with an air outlet of the cooling bin, and an air outlet of the return air fan is communicated with the hot air inlet.
Translation mechanism is including casing, screw rod, swivel nut, pivot and motor, casing fixed mounting is on the support, pivot and swivel nut movable mounting respectively are provided with first gear and second gear on pivot and swivel nut respectively, and first gear meshes with the second gear mutually, offer on the casing with first gear and the corresponding groove of dodging of second gear, on motor fixed mounting casing, the motor is connected with the pivot transmission, the screw rod is put in the swivel nut soon, and a tip of screw rod passes through connecting seat and baffle fixed connection.
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 intake of return air fan is linked together through the air exit of second pipeline with the cooling 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 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.
And the redundant hot air discharge pipe is fixedly arranged on the mixed air outlet pipe through a cover plate.
The utility model adopts the beneficial effect that above-mentioned technical solution can reach is:
1. the hot air after cooling the rivet in the cooling bin is discharged back to the hot air cavity through the return air fan, and is mixed with the cold air in the cold air cavity to obtain the cooling air with the appropriate temperature, so that the hot air after cooling the rivet is recycled, the purpose of saving energy consumption is realized, the production cost is effectively reduced, and the cooling bin is very environment-friendly.
2. The baffle plate can be driven to move left and right through the translation mechanism, the separation proportion of the baffle plate to the first air hole is adjusted, when the baffle plate 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 bin can be increased; when the baffle moves rightwards, hot air entering the mixed 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 mixed air outlet pipe from the cold air cavity is gradually increased, so that the temperature of cooling air entering the cooling bin 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 proportion adjusting 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-hot air ratio adjusting 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 view of FIG. 1 at M;
fig. 7 is a partially enlarged schematic view of fig. 1 at N.
Detailed Description
As shown in fig. 1, the cold and hot air control mechanism of the constant temperature system for heat treatment comprises a cooling chamber 1, a blowing fan 2, a return air fan 3, a cold and hot air proportion adjusting mechanism, an electric heating wire 4, a first temperature sensor 5, a second temperature sensor 6 and a third temperature sensor 7, as shown in fig. 2 and 3, the cold and hot air proportion adjusting mechanism comprises an air box 8, a translation mechanism, a support 9, a baffle plate 10, a surplus hot air discharge pipe 11 and a mixed air outlet pipe 12, a partition plate 13 is arranged in the air box 8, the interior of the air box 8 is divided into a cold air cavity 14 and a hot air cavity 15 through the partition plate 13, a cold air inlet 16 is arranged on the side wall of the cold air cavity 14, and a hot air inlet 17 is arranged on the side wall of the hot air cavity 15. The top of the air box 8 is open, as shown in fig. 5, the support 9 is fixedly mounted on the air box 8, the support 9 is provided with a through groove 18 corresponding to the opening at the top of the air box 8, the support 9 is provided with a guide groove 19 communicated with the through groove 18, the baffle 10 is movably inserted into the guide groove 19 of the support 9, the baffle 10 is provided with a first air hole 20 and a second air hole 21, the mixed air-out pipe 12 is fixedly mounted at the first air hole 20 of the baffle 10, the surplus hot air discharge pipe 11 is fixedly mounted on the mixed air-out pipe 12 through a cover plate 45, and the surplus hot air discharge pipe 11 corresponds to the second air hole 21. The translation mechanism is arranged on the support 9 and connected with the baffle 10, and the specific structure of the translation mechanism and the connection relation between the translation mechanism and the support 9 and the baffle 10 are as follows: as shown in fig. 4, the translation mechanism includes a housing 34, a screw 35, a screw 36, a rotating shaft 37 and a motor 38, the housing 34 is fixedly mounted on the support 9, and the rotating shaft 37 and the screw 36 are respectively movably mounted on the housing 34 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 motor 38 is fixedly installed on the casing 34, the 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 cooling bin 1 can adopt a cooling bin in the prior art, the specific structure of the cooling bin 1 does not need to be described in detail, an air inlet 22 and an air outlet 23 are formed in the cooling bin 1, and an air inlet 24 of the blowing fan 2 is communicated with the mixed air outlet pipe 12 and is communicated in the following manner: a first pipeline 30 is communicated with the air inlet 24 of the blowing fan 2, and the first pipeline 30 is communicated with the mixed air outlet pipe 12 through a corrugated pipe 25. An air outlet 26 of the blowing fan 2 is communicated with an air inlet 22 of the cooling bin 1, as shown in fig. 6, the first temperature sensor 5 is fixedly arranged in the air inlet 22 of the cooling bin 1 in a penetrating manner, and the second temperature sensor 6 and the third temperature sensor 7 are respectively and fixedly arranged in the cold air inlet 16 and the hot air inlet 17 of the air box 8 in a penetrating manner. An air inlet 46 of the return air fan 3 is communicated with an air outlet 23 of the cooling bin 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 the redundant hot air discharge pipe 11, and as shown in fig. 7, the heating wire 4 is fixedly installed in the first pipeline 30.
The working principle of the cold and hot air control mechanism of the constant temperature system for heat treatment of the utility model is as follows: the rivet needing to be cooled after heat treatment is placed in the cooling bin 1, the cold air inlet 16 is communicated with a 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 air return fan 3, hot air after the rivet is cooled in the cooling bin 1 is discharged back to the hot air cavity 15. The cold air in the cold air cavity 14 and a part of the hot air in the hot air cavity 15 enter the mixed air outlet pipe 12 from the first air hole 20, and mixed to form cooling air with proper temperature, and then the cooling air is conveyed into the cooling bin 1 by the air blowing fan 2, cooling the heat-treated rivet, discharging redundant hot air in the hot air cavity 15 from the multi-residual heat air discharge pipe 11 through the second air hole 21, the temperature of the cooling air entering the cooling bin 1 is monitored by the first temperature sensor 5, the temperature of the hot air entering the hot air cavity 15 is monitored by the third temperature sensor 7, when the temperature of the cooling air or the temperature of the hot air deviates from the preset temperature value, the proportion of the cold air and the hot air entering the mixed air outlet pipe 12 is adjusted by the cold air and hot air proportion adjusting mechanism, so that the temperature of the cooling air entering the cooling bin 1 is maintained in a proper range, and the specific adjusting steps of the ratio of the cold air to the hot air are 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 motor 38 of the translation 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 bin 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 translation 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 bin 1 is further reduced, and the temperature of the cooling air entering the cooling bin 1 is always maintained in a proper range. When the cold and hot air control mechanism of the constant temperature system for heat treatment is started, the temperature of the 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 bin 1 needs to be preheated by the heating wire 4, the temperature of the cooling air entering the cooling bin 1 after the start reaches the required temperature as soon as possible, and when the temperature reaches the required value, the heating wire 4 is closed.