阅读说明：本技术 一种热风循环的热处理炉 (Hot air circulation heat treatment furnace ) 是由 张聪 于 2020-07-29 设计创作，主要内容包括：本发明公开了一种热风循环的热处理炉,炉体的内侧壁上端成型有同轴设置的圆环状的上支撑环；上支撑环的下端面成型有同轴设置的圆筒状的内胆；加热腔的竖直部内设置有加热单元；内胆的底部上端面成型有开口朝下设置的圆筒状的中心导向柱；中心导向柱的下端开口贯穿内胆的底面；炉体的底面中心固定有电机；电机的输出轴上端固定有风扇；风扇正对中心导向柱的下端开口；内胆的侧壁上成型有若干均匀分布的径向内外贯穿的外通孔；中心导向柱的侧壁上成型有若干均匀分布的内通孔；炉体的上端开口盖合有盖体；放料架设置在盖体、内胆和中心导向柱之间。(The invention discloses a hot air circulation heat treatment furnace, wherein a coaxially arranged annular upper supporting ring is formed at the upper end of the inner side wall of a furnace body; a cylindrical inner container which is coaxially arranged is formed on the lower end surface of the upper supporting ring; a heating unit is arranged in the vertical part of the heating cavity; a cylindrical central guide post with a downward opening is formed on the upper end surface of the bottom of the inner container; the lower end opening of the central guide post penetrates through the bottom surface of the inner container; a motor is fixed at the center of the bottom surface of the furnace body; a fan is fixed at the upper end of an output shaft of the motor; the fan is over against the lower end opening of the central guide post; a plurality of uniformly distributed outer through holes which penetrate radially and internally and externally are formed on the side wall of the inner container; a plurality of inner through holes which are uniformly distributed are formed on the side wall of the central guide post; the upper end opening of the furnace body is covered with a cover body; the material placing frame is arranged among the cover body, the inner container and the central guide post.)

1. A hot air circulation heat treatment furnace is characterized in that: comprises a cylindrical furnace body (10) and a material placing frame (20); the upper end of the inner side wall of the furnace body (10) is formed with a coaxially arranged annular upper supporting ring (11); a cylindrical inner container (12) with an upper end opening and coaxially arranged is formed on the lower end surface of the upper support ring (11); the inner diameter of the inner container (12) is equal to the inner diameter of the upper support ring (11); a gap is arranged between the bottom surface of the inner container (12) and the inner bottom surface of the furnace body (10); a heating cavity is arranged among the inner container (12), the furnace body (10) and the upper support ring (11); a heating unit (16) is arranged in the vertical part of the heating cavity; a cylindrical central guide post (13) with a downward opening is formed on the upper end surface of the bottom of the inner container (12); the lower end opening of the central guide column (13) penetrates through the bottom surface of the inner container; a motor (17) is fixed at the center of the bottom surface of the furnace body (10); a fan (171) is fixed at the upper end of an output shaft of the motor (17); the fan (171) is opposite to the lower end opening of the central guide column (13); a plurality of uniformly distributed outer through holes (120) which penetrate through the inner container (12) in the radial direction are formed in the side wall of the inner container; a plurality of inner through holes (130) which are uniformly distributed are formed on the side wall of the central guide column (13); a cover body (14) is covered on the opening at the upper end of the furnace body (10); the material placing frame (20) is arranged among the cover body (14), the inner container (12) and the central guide column (13).

2. The heat treatment furnace of hot air circulation according to claim 1, characterized in that: the material placing frame (20) comprises an upper circular plate-shaped material placing support plate (21) and a plurality of lower circular ring-shaped material placing support plates (23); a central limiting groove (210) for inserting the upper end of the central guide column (13) is formed in the center of the lower end surface of the feeding upper support plate (21); the upper end surface of the discharging lower supporting plate (23) is detachably connected with a plurality of vertical connecting rods (22); the uppermost vertical connecting rod (22) is detachably connected to the lower end face of the upper discharging supporting plate (21), and the rest vertical connecting rods (22) are detachably connected to the lower end face of the lower discharging supporting plate (23) on the upper side; the feeding upper support plate (21) is clamped by the central guide column (13) and the cover body (14); the inner diameter of the discharging lower support plate (23) is equal to the outer diameter of the central guide column (13), and the outer diameter is equal to the inner diameter of the inner container (12).

3. The heat treatment furnace of hot air circulation according to claim 2, characterized in that: a plurality of limit slots (110) which are uniformly distributed on the circumference are formed at the upper end of the inner cylindrical surface of the upper support ring (11); the upper end of the limiting slot (110) is not sealed; a plurality of limiting insertion blocks (212) matched with the limiting slots (110) are formed on the cylindrical surface of the upper supporting plate (21) for placing.

4. The heat treatment furnace of hot air circulation according to claim 2, characterized in that: a hanging ring (211) is formed at the center of the upper end surface of the feeding upper supporting plate (21); an upper avoidance groove (140) for inserting the hanging ring (211) is formed on the lower end surface of the cover body (14).

5. The heat treatment furnace of hot air circulation according to claim 2, characterized in that: the outer through holes (120) are in one-to-one correspondence with the inner through holes (130), and the vertical connecting rods (22) avoid the outer through holes (120) and the inner through holes (130).

6. The heat treatment furnace of hot air circulation according to claim 5, wherein: the discharging lower support plate (23) avoids the outer through hole (120) and the inner through hole (130).

7. The heat treatment furnace of hot air circulation according to claim 1, characterized in that: a plurality of vertically arranged lower vertical connecting rods (15) which are uniformly distributed on the circumference are fixed on the lower end surface of the inner container (12); the lower end of the lower vertical connecting rod (15) is fixed on the bottom surface of the furnace body (10).

Technical Field

The invention relates to the field of heat treatment furnaces, in particular to a hot air circulating heat treatment furnace.

Background

Magnesium alloy is one of the lightest structural materials, has incomparable superiority with other metals and has abundant resources. Currently, magnesium alloys have been used in many industries, particularly in the fields of transportation, military industry, national defense, and the like. During the processing of magnesium alloys, heat treatment is an important step and has a significant impact on the appearance and properties of the finished magnesium alloy. When the heat treatment furnace is used, the temperature equalizing environment in the furnace is required to be realized, and the problems of cracking, deformation and the like caused by nonuniform heating of workpieces are avoided. Most of the existing heat treatment furnaces are provided with heating elements on furnace walls, which easily causes high temperature around the furnace body and low intermediate temperature, and is not beneficial to heat treatment of workpieces.

Disclosure of Invention

The invention aims to provide a hot air circulating heat treatment furnace aiming at the technical problem that the temperature of the existing heat treatment furnace is inconsistent.

The technical scheme for solving the technical problems is as follows: a hot air circulation heat treatment furnace comprises a cylindrical furnace body and a material placing frame; the upper end of the inner side wall of the furnace body is formed with a coaxially arranged annular upper supporting ring; a cylindrical inner container with an upper end opening is coaxially formed on the lower end surface of the upper supporting ring; the inner diameter of the inner container is equal to that of the upper support ring; a gap is arranged between the bottom surface of the inner container and the inner bottom surface of the furnace body; a heating cavity is arranged among the inner container, the furnace body and the upper support ring; a heating unit is arranged in the vertical part of the heating cavity; a cylindrical central guide post with a downward opening is formed on the upper end surface of the bottom of the inner container; the lower end opening of the central guide post penetrates through the bottom surface of the inner container; a motor is fixed at the center of the bottom surface of the furnace body; a fan is fixed at the upper end of an output shaft of the motor; the fan is over against the lower end opening of the central guide post; a plurality of uniformly distributed outer through holes which penetrate radially and internally and externally are formed on the side wall of the inner container; a plurality of inner through holes which are uniformly distributed are formed on the side wall of the central guide post; the upper end opening of the furnace body is covered with a cover body; the material placing frame is arranged among the cover body, the inner container and the central guide post.

Preferably, the material placing frame comprises an upper circular plate-shaped material placing support plate and a plurality of lower circular ring-shaped material placing support plates; a central limiting groove for inserting the upper end of the central guide post is formed in the center of the lower end surface of the feeding upper support plate; the upper end surface of the discharging lower supporting plate is detachably connected with a plurality of vertical connecting rods; the vertical connecting rod at the uppermost end is detachably connected to the lower end face of the discharging upper supporting plate, and the rest vertical connecting rods are detachably connected to the lower end face of the discharging lower supporting plate at the upper side; the feeding upper support plate is clamped by the central guide post and the cover body; the inner diameter of the discharging lower supporting plate is equal to the outer diameter of the central guide post, and the outer diameter of the discharging lower supporting plate is equal to the inner diameter of the inner container.

Preferably, the upper end of the inner cylindrical surface of the upper support ring is provided with a plurality of limit slots with uniformly distributed circumferences; the upper end of the limiting slot is not sealed; the cylindrical surface of the supporting plate on the material feeding is provided with a plurality of limiting insertion blocks matched with the limiting slots.

Preferably, a hanging ring is formed in the center of the upper end surface of the feeding upper supporting plate; an upper avoidance groove for inserting the hanging ring is formed on the lower end face of the cover body.

As the optimization of the technical scheme, the outer through holes correspond to the inner through holes one by one, and the vertical connecting rods avoid the outer through holes and the inner through holes.

Preferably, the discharging lower supporting plate avoids the outer through hole and the inner through hole.

Preferably, a plurality of vertically arranged lower vertical connecting rods which are uniformly distributed on the circumference are fixed on the lower end surface of the inner container; the lower end of the lower vertical connecting rod is fixed on the bottom surface of the furnace body.

The invention has the beneficial effects that: simple structure makes the amount of wind can reach the inner bag center through central guide post, and the heat is even, and heating effect is good.

Drawings

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

In the figure, 10, a furnace body; 11. an upper support ring; 110. limiting slots; 12. an inner container; 120. an outer through hole; 13. a central guide post; 130. an inner through hole; 14. a cover body; 140. an upper avoidance groove; 15. a lower vertical connecting rod; 16. a heating unit; 17. a motor; 171. a fan; 20. a material placing frame; 21. feeding an upper supporting plate; 210. a central limiting groove; 211. hanging a ring; 212. limiting the inserting block; 22. a vertical connecting rod; 23. and discharging the lower supporting plate.

Detailed Description

As shown in fig. 1, a hot air circulating heat treatment furnace includes a cylindrical furnace body 10 and a material placing frame 20; the upper end of the inner side wall of the furnace body 10 is formed with a coaxially arranged annular upper support ring 11; a cylindrical inner container 12 with an upper end opening is coaxially formed on the lower end surface of the upper supporting ring 11; the inner diameter of the inner container 12 is equal to the inner diameter of the upper support ring 11; a gap is arranged between the bottom surface of the inner container 12 and the inner bottom surface of the furnace body 10; a heating cavity is arranged among the inner container 12, the furnace body 10 and the upper support ring 11; a heating unit 16 is arranged in the vertical part of the heating cavity; a cylindrical central guide column 13 with a downward opening is formed on the upper end surface of the bottom of the inner container 12; the lower end opening of the central guide column 13 penetrates through the bottom surface of the liner; a motor 17 is fixed at the center of the bottom surface of the furnace body 10; a fan 171 is fixed on the upper end of the output shaft of the motor 17; the fan 171 faces the lower end opening of the center guide column 13; a plurality of uniformly distributed outer through holes 120 which penetrate radially and internally and externally are formed on the side wall of the inner container 12; a plurality of inner through holes 130 which are uniformly distributed are formed on the side wall of the central guide column 13; the upper end opening of the furnace body 10 is covered with a cover body 14; the material placing frame 20 is arranged among the cover body 14, the inner container 12 and the central guide post 13.

As shown in fig. 1, the material placing frame 20 includes an upper circular plate-shaped material placing support plate 21 and a plurality of lower circular ring-shaped material placing support plates 23; a central limiting groove 210 for inserting the upper end of the central guide column 13 is formed in the center of the lower end surface of the feeding upper support plate 21; the upper end surface of the discharging lower supporting plate 23 is detachably connected with a plurality of vertical connecting rods 22; the uppermost vertical connecting rod 22 is detachably connected to the lower end face of the discharging upper supporting plate 21, and the rest vertical connecting rods 22 are detachably connected to the lower end face of the discharging lower supporting plate 23 on the upper side; the feeding upper support plate 21 is clamped by the central guide column 13 and the cover body 14; the inner diameter of the discharging lower support plate 23 is equal to the outer diameter of the central guide column 13, and the outer diameter is equal to the inner diameter of the inner container 12.

As shown in fig. 1, a plurality of circumferentially and uniformly distributed limiting slots 110 are formed at the upper end of the inner cylindrical surface of the upper support ring 11; the upper end of the limiting slot 110 is not sealed; a plurality of limiting insertion blocks 212 matched with the limiting insertion grooves 110 are formed on the cylindrical surface of the feeding upper supporting plate 21.

As shown in fig. 1, a hanging ring 211 is formed at the center of the upper end surface of the feeding upper support plate 21; an upper escape groove 140 into which the suspension ring 211 is inserted is formed on the lower end surface of the cover body 14.

As shown in fig. 1, the outer through holes 120 correspond to the inner through holes 130 one by one, and the vertical connecting rods 22 avoid the outer through holes 120 and the inner through holes 130.

As shown in fig. 1, the discharging lower support plate 23 avoids the outer through hole 120 and the inner through hole 130.

As shown in fig. 1, a plurality of vertically arranged lower vertical connecting rods 15 which are uniformly distributed on the circumference are fixed on the lower end surface of the inner container 12; the lower end of the lower vertical connecting rod 15 is fixed on the bottom surface of the furnace body 10.

The working principle of the hot air circulation heat treatment furnace is as follows:

during normal operation, as shown in fig. 1, the heating unit 16 generates heat, the heat is filled in the heating cavity, heat is conducted to the inner container 12, and meanwhile the motor 17 drives the fan 171 to rotate, so that part of heat is upward along the central guide column 13, the heat in the vertical part of the heating cavity is conducted to the periphery of the inner container 12 and the heat in the central guide column 13 is conducted to the center of the inner container 12, so that the temperature of the inner container 12 is consistent, the workpieces on the support plate 23 under the discharging process are heated uniformly, and the heating effect is good.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.