A trolley-type heat treatment furnace body airflow circulation structure

Abstract

This utility model relates to the field of heat treatment furnaces, specifically to a trolley-type heat treatment furnace body airflow circulation structure, including a furnace body and a material seat slidably mounted in the middle of the furnace body. At least one guide channel is formed on the side wall of the material seat inside the furnace body, and the upper end of the guide channel penetrates the top of the material seat. This utility model, through the arrangement of components such as the material seat, guide channel, and perforated air distribution plate, compared to a traditional solid trolley, can promote hot air blowing from the guide channel to the bottom of the workpiece, avoiding uneven heating of the workpiece bottom during heat treatment. Through the arrangement of components such as guide plates, pull rods, and cams, the hot air blown out of the guide channel can be dynamically adjusted, resulting in a uniform airflow distribution at the bottom of the workpiece, improving the uniformity of workpiece heating, and further preventing the hot air from continuously acting on a certain point at the bottom of the workpiece due to a fixed direction of the guide channel, causing localized overheating, thereby improving the quality of workpiece heat treatment.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment furnaces, and in particular to a trolley-type heat treatment furnace body airflow circulation structure. Background Technology

[0002] Car-type heat treatment furnaces are widely used in heat treatment processes such as quenching, tempering, annealing, and normalizing of metal workpieces due to their advantages such as flexible operation and large loading capacity. One of the core requirements of the heat treatment process is the uniformity of temperature inside the furnace, which directly affects the heat treatment quality, performance consistency, and deformation control of the workpiece.

[0003] In traditional bogie-type heat treatment furnaces, the furnace body is typically equipped with a fan-driven hot air circulation system designed to promote uniform flow of high-temperature airflow within the furnace, thereby reducing temperature differences between different areas of the furnace chamber. However, existing designs suffer from significant technical bottlenecks in airflow circulation, particularly for the bottom area of ​​workpieces placed on the bogie.

[0004] Traditional trolleys are mostly solid or dense structures. When high-temperature airflow flows over the workpiece under the drive of a fan, the solid trolley surface will severely hinder the effective flow and penetration of airflow to the bottom area of ​​the workpiece. This results in the heat exchange efficiency of the bottom area of ​​the workpiece (especially the area in direct contact with or adjacent to the trolley) being much lower than that of the upper and side parts of the workpiece, forming obvious "cold zones". This causes the workpiece to be heated unevenly as a whole, which may ultimately affect the quality of the heat treatment of the workpiece. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a trolley-type heat treatment furnace body airflow circulation structure to solve the technical problems in the prior art.

[0006] Based on the above objectives, this utility model provides a trolley-type heat treatment furnace body airflow circulation structure, including a furnace body and a material seat slidably installed in the middle of the furnace body. The material seat has at least one guide groove on the side wall inside the furnace body. The upper end of the guide groove penetrates through the top of the material seat, and a perforated air distribution plate is fixedly installed on its inner wall.

[0007] Preferably, a guide vane is provided in the middle of the guide channel.

[0008] Preferably, the guide vane is hinged to the inner wall of the guide groove via a rotating rod, and a pressure block is fixed on the rotating rod;

[0009] A pull rod is movably mounted on the material base, one end of which extends to the outside of the material base. A pusher is fixedly connected to the pull rod, and the pusher contacts and engages with the pressure block.

[0010] A spring is fitted onto the pull rod, with one end of the spring fixed to the surface of the material seat and the other end fixed to the surface of the pull rod.

[0011] Preferably, the pressure block and the guide vane are located on opposite radial sides of the rotating rod.

[0012] Preferably, the bottom of the pressure block has a rounded corner structure, and the pusher has push rods at both ends, with the top of the push rods being an arc surface that matches the bottom of the pressure block.

[0013] Preferably, the material seat has a guide groove inside, the end of the pull rod away from the pusher extends into the guide groove, and a limit ring is fixed at the end of the pull rod, the limit ring being in a limiting fit with the inner wall of the guide groove.

[0014] Preferably, the guide channels are symmetrically arranged on both sides of the material seat, and at least one set is provided on each side.

[0015] Preferably, a transmission assembly is provided at one end of the furnace body, the transmission assembly including a cam, a rotating shaft and a motor;

[0016] The rotating shaft is rotatably mounted on the furnace body, the cam is fixed to the rotating shaft and contacts and engages with the outer end of the pull rod, and the motor output end is fixedly connected to one end of the rotating shaft.

[0017] The beneficial effects of this utility model are as follows: The airflow circulation structure of the trolley-type heat treatment furnace body of this utility model, through the setting of components such as material seat, guide channel and porous air distribution plate, can promote hot air to blow from the guide channel to the bottom of the workpiece, compared with the traditional solid trolley, thus avoiding the problem of uneven heating of the bottom of the workpiece during heat treatment.

[0018] By setting up components such as guide vanes, tie rods, and cams, the hot air blown out of the guide channel can be dynamically adjusted, so that the airflow at the bottom of the workpiece is evenly distributed, improving the uniformity of the workpiece's heating. This further prevents the hot air from continuously acting on a certain point at the bottom of the workpiece due to the fixed direction of the guide channel, which could cause localized overheating and thus improve the quality of the workpiece's heat treatment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a schematic diagram of the material holder, flow guide groove, and porous air distribution plate of this utility model;

[0022] Figure 3This is a partial structural cross-sectional view of the guide channel, guide vane, and tie rod of this utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of a portion of the material holder, guide vane, and pull rod of this utility model;

[0024] Figure 5 This is a schematic diagram of a partial structure of the guide vane, pull rod, and spring of this utility model;

[0025] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 7 This is a rear sectional view of the present invention;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the cam of this utility model.

[0028] The diagram is marked as follows:

[0029] 1. Furnace body; 2. Material holder; 3. Guide channel; 4. Perforated air distribution plate; 5. Guide vane; 501. Rotating rod; 502. Pressure block; 6. Pushing component; 7. Tie rod; 8. Spring; 9. Cam; 10. Rotating shaft; 11. Motor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] The first aspect of this utility model proposes a trolley-type heat treatment furnace body airflow circulation structure, such as... Figure 1-8As shown, the furnace includes a furnace body 1 and a material seat 2 slidably mounted in the middle of the furnace body 1. At least one guide channel 3 is provided on the side wall inside the furnace body 1. The upper end of the guide channel 3 penetrates the top of the material seat 2, and a perforated air distribution plate 4 is fixedly installed on its inner wall. Through the guide channel 3 and the perforated air distribution plate 4 on the material seat 2, compared to a traditional solid trolley, hot air can be directed from the guide channel 3 to the bottom of the workpiece, avoiding uneven heating of the bottom of the workpiece during heat treatment.

[0033] In this embodiment, a guide vane 5 is provided in the middle of the guide channel 3. Through the arrangement of the guide channel 3, the guide vane 5, and the porous air distribution plate 4, hot air penetrates the gap between the workpieces from the bottom, forming vertical hot air penetration and improving the heat exchange at the bottom of the workpiece.

[0034] In this embodiment: the guide plate 5 is hinged to the inner wall of the guide groove 3 via a rotating rod 501, and a pressure block 502 is fixed on the rotating rod 501; it should be added that the two ends of the rotating rod 501 are rotatably mounted to the inner wall of the guide groove 3 via bearings to improve the rotational stability of the rotating rod 501.

[0035] A pull rod 7 is movably mounted on the material base 2, one end of which extends to the outside of the material base 2. A pusher 6 is fixedly connected to the pull rod 7, and the pusher 6 contacts and cooperates with the pressure block 502.

[0036] A spring 8 is fitted on the pull rod 7. One end of the spring 8 is fixed to the surface of the material seat 2, and the other end of the spring 8 is fixed to the surface of the pull rod 7.

[0037] When one end of the pull rod 7 is squeezed by the cam 9, the pusher 6 fixed on the surface of the pull rod 7 pushes the pressure block 502 at the bottom of the rotating rod 501 to deflect to one side, thereby causing the guide vane 5 to deflect at an angle, thus changing the direction of the hot air in the guide groove 3. When one end of the pull rod 7 is released from the squeezed state, the spring 8 drives the pull rod 7 to move and reset, causing the guide vane 5 to deflect in the opposite direction and reset. During the reciprocating movement of the pull rod 7, the guide vane 5 swings continuously, making the airflow evenly distributed, so that the hot air can be blown more evenly to the surface of the bottom of the workpiece, improving the uniformity of the heat treatment of the bottom of the workpiece, and further improving the quality of the heat treatment of the workpiece.

[0038] In this embodiment, the pressure block 502 and the guide vane 5 are located on opposite radial sides of the rotating rod 501. Because the pressure block 502 and the guide vane 5 are positioned opposite each other, when the pressure block 502 is squeezed and deflected, the rotating rod 501 drives the guide vane 5 to deflect, thereby changing the direction of the hot air in the guide channel 3.

[0039] In this embodiment, the bottom of the pressure block 502 has a rounded corner structure, and the pusher 6 has push rods at both ends, with the top of the push rods having an arc surface that matches the bottom of the pressure block 502. This reduces interference caused when the push rods at both ends of the pusher 6 contact the bottom of the pressure block 502 during the back-and-forth movement of the pusher 6.

[0040] In this embodiment: a guide groove is provided inside the material base 2, and the end of the pull rod 7 away from the pusher 6 extends into the guide groove. A limit ring is fixed to the end of the pull rod 7, and the limit ring is in a limiting fit with the inner wall of the guide groove. After the spring 8 drives the pull rod 7 to move and reset to the position, the other end of the pull rod 7 is restricted from further movement by the limit ring to prevent the pull rod 7 from moving out and affecting its use.

[0041] In this embodiment, the flow guide channels 3 are symmetrically arranged on both sides of the material base 2, with at least one set on each side. It should be noted that multiple flow guide channels 3 can be provided on both sides of the material base 2, and the arrangement of multiple flow guide channels 3 ensures that the airflow under different loading conditions is evenly distributed on the surface of the bottom of the workpiece, thereby improving the uniformity of the workpiece heating.

[0042] In this embodiment: a transmission assembly is provided at one end of the furnace body 1, the transmission assembly including a cam 9, a rotating shaft 10 and a motor 11;

[0043] The rotating shaft 10 is rotatably mounted on the furnace body 1. The cam 9 is fixed to the rotating shaft 10 and contacts the outer end of the pull rod 7. The output end of the motor 11 is fixedly connected to one end of the rotating shaft 10. It should be noted that the two ends of the rotating shaft 10 are rotatably mounted to the furnace body 1 via bearings, and a seal is provided between the rotating shaft 10 and the furnace body 1 to improve the sealing effect.

[0044] To prevent the continuous hot air from the guide channel 3 from acting on a specific point at the bottom of the workpiece, causing localized overheating, when dynamic adjustment of the airflow direction at the bottom of the workpiece on the material holder 2 is required, the motor 11 is started. The output end of the motor 11 drives the cam 9 on the rotating shaft 10 to rotate slowly, causing the protrusion of the cam 9 to press and push one end of the pull rod 7, causing the pull rod 7 to move. During the movement of the pull rod 7, the pusher 6 fixed on the pull rod 7 pushes the pressure block 502 at the bottom of the rotating rod 501 to deflect around the rotating rod 501, changing the angle of the guide vane 5 on the rotating rod 501, thereby changing the direction of the hot air in the guide channel 3. When the cam 9 releases its pressure on the pull rod 7, the spring 8 drives the pull rod 7 to reset, causing the guide vane 5 to deflect in the opposite direction and reset. This process is repeated to achieve uniform airflow distribution at the bottom of the workpiece, improving the uniformity of the workpiece's heating.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0046] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trolley type heat treatment furnace body air flow circulation structure, comprising a furnace body (1) and a hearth (2) slidingly installed in the middle of the furnace body (1), characterized in that, The material seat (2) is located on the side wall inside the furnace body (1) and has at least one guide groove (3). The upper end of the guide groove (3) penetrates the top of the material seat (2), and a perforated air distribution plate (4) is fixedly installed on its inner wall.

2. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 1, wherein A guide plate (5) is provided in the middle of the guide channel (3).

3. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 2, wherein The guide vane (5) is hinged to the inner wall of the guide groove (3) via a rotating rod (501), and a pressure block (502) is fixed on the rotating rod (501). A pull rod (7) is movably installed on the material seat (2), one end of which extends to the outside of the material seat (2). A pusher (6) is fixedly connected to the pull rod (7), and the pusher (6) contacts and cooperates with the pressure block (502). A spring (8) is fitted on the pull rod (7). One end of the spring (8) is fixed to the surface of the material seat (2), and the other end of the spring (8) is fixed to the surface of the pull rod (7).

4. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 3, wherein The pressure block (502) and the guide plate (5) are located on opposite radial sides of the rotating rod (501).

5. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 4, wherein The bottom of the pressure block (502) has a rounded corner structure, and the pusher (6) has push rods at both ends. The top of the push rod is an arc surface that matches the bottom of the pressure block (502).

6. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 3, wherein The material seat (2) has a guide groove inside. The end of the pull rod (7) away from the pusher (6) extends into the guide groove, and a limit ring is fixed at the end of the pull rod (7). The limit ring is matched with the inner wall of the guide groove for limiting.

7. The airflow circulation structure of a bogie-type heat treatment furnace according to claim 1, characterized in that, The guide channels (3) are symmetrically opened on both sides of the material seat (2), and at least one set is provided on each side.

8. The air flow circulating structure of a furnace body of a car-type heat treatment furnace according to claim 3, wherein A transmission assembly is provided at one end of the furnace body (1), the transmission assembly including a cam (9), a rotating shaft (10) and a motor (11). The rotating shaft (10) is rotatably mounted on the furnace body (1), the cam (9) is fixed to the rotating shaft (10) and contacts the outer end of the pull rod (7), and the output end of the motor (11) is fixedly connected to one end of the rotating shaft (10).

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