Adjustable air door structure for vacuum gas quenching furnace

Abstract

The utility model relates to the technical field of vacuum gas quenching furnaces, and discloses an adjustable air door structure for a vacuum gas quenching furnace, the adjustable air door structure comprises a furnace wall, an adjusting mechanism mounted on the outer side of the furnace wall and an air door mounted in the adjusting mechanism, a ventilation opening is formed in the furnace wall, and an air pipe is mounted in the ventilation opening; the adjusting mechanism comprises a fixing block detachably installed on the outer side of the furnace wall, an air channel communicated with the air pipe is formed in the middle of the fixing block, the air door is installed in the air channel, one end of the air door is hinged to the inner wall of the air channel, and an electric push rod is installed on the outer side of the fixing block. The output shaft end of the electric push rod penetrates into the air channel in a sealed mode and is provided with a push block making contact with the air door. The air door can be automatically driven to rotate, so that the opening angle of the air door can be automatically adjusted to adapt to different working environments, the use range is expanded, the overall structure of the air door is convenient to mount and dismount, convenience is brought to operation, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum air quenching furnaces, and in particular to an adjustable damper structure for vacuum air quenching furnaces. Background Art

[0002] A vacuum vertical gas quenching furnace is a device for quenching workpieces in a vacuum environment. The authorized patent with application number CN202021262943.9 provides an automatic opening and closing device for a vacuum gas quenching furnace damper, comprising a fixed block, a damper, an air duct, and a fixed seat. The fixed block structure is a rectangular frame structure, and a connecting base plate is provided at the upper and lower ends of the outer side of the fixed block. The connecting base plate is provided with multiple connecting holes. A connecting seat is provided on both the left and right sides of the upper inner side of the fixed block. The damper is a rectangular thin plate with a hinge hole at the upper end of the damper. Compared with the prior art, the utility model has the following beneficial effects: by designing a damper that is movably installed by a hinge shaft, the damper can be pushed open by the higher air pressure in the furnace during quenching, thereby realizing automatic opening of the damper. At the same time, through the movable connection through the hinge shaft, the damper can automatically fall by gravity when the quenching furnace is not working, thereby realizing automatic closing of the damper. By arranging a connecting base plate on the fixed block, the installation and fixation of the device can be facilitated.

[0003] However, when installing the fixing block in the above patent, it is necessary to cooperate with the fixing seat, the locking nut, and the stud to screw in the stud to achieve the purpose of locking installation, which is very inconvenient to operate. Moreover, the damper can only be pushed open by air pressure and cannot automatically adjust the angle of the damper opening, thereby reducing its applicability. Utility Model Content

[0004] In order to solve the problem of the existing adjustable damper structure for vacuum air quenching furnace, during installation, it is necessary to cooperate with the fixing seat, locking nut and stud to screw in the stud to achieve the purpose of locking installation, which is very inconvenient to operate. Moreover, the damper can only be pushed open by air pressure and the size of the damper opening cannot be automatically adjusted, thereby reducing the applicability. The present application provides an adjustable damper structure for vacuum air quenching furnace.

[0005] The present application provides an adjustable damper structure for a vacuum air quenching furnace using the following technical solutions:

[0006] An adjustable damper structure for a vacuum gas quenching furnace comprises a furnace wall, an adjusting mechanism installed on the outside of the furnace wall, and a damper installed inside the adjusting mechanism. A ventilation opening is provided inside the furnace wall, and an air duct is installed inside the ventilation opening. The adjusting mechanism comprises a fixed block detachably mounted on the outside of the furnace wall, an air duct connected to the air duct is provided in the middle of the fixed block, the damper is installed in the air duct, and one end is hinged to the inner wall of the air duct, an electric push rod is installed on the outside of the fixed block, and the output shaft end of the electric push rod is sealed and extends through the air duct to a push block installed in contact with the damper.

[0007] Preferably, limiting columns are symmetrically installed at the bottom of both ends of the fixing block, and limiting holes matching the positions of the limiting columns are symmetrically opened on the outer side of the furnace wall.

[0008] Preferably, a groove is provided on one side of the limiting hole, a T-shaped rod is slidably installed inside the groove, a pull rod is fixedly installed on one end of the T-shaped rod, the pull rod extends through the end away from the T-shaped rod to the outside of the furnace wall and is provided with a handle, and a spring is provided on the outside, one end of the spring is connected to the T-shaped rod, and the other end is fixedly connected to the inner wall of the groove.

[0009] Preferably, the limiting column is provided with a socket matching one end of a T-shaped rod, a first electromagnetic piece is installed at one end of the T-shaped rod, and a second electromagnetic piece with opposite magnetic properties to the first electromagnetic piece is installed inside one side of the slot body.

[0010] Preferably, the length of the damper is equal to the diagonal length of the inner contour of the air duct.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The vacuum gas quenching furnace uses an adjustable damper structure, which can automatically drive the damper to rotate and automatically adjust the damper opening angle to adapt to different working environments, thereby expanding the scope of use. In addition, the overall structure of the damper is easy to install and disassemble, which brings convenience to operation and thus improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the furnace wall and the fixing block in the utility model;

[0015] Figure 3 It is a schematic diagram of the internal structure of the furnace wall in this utility model.

[0016] Explanation of the accompanying symbols: 1. furnace wall; 2. air door; 3. air duct; 4. fixing block; 5. air duct; 6. electric push rod; 7. push block; 8. limit column; 9. T-bar; 10. pull rod; 11. spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 3 , the utility model provides a technical solution:

[0019] An adjustable damper structure for a vacuum gas quenching furnace comprises a furnace wall 1, an adjusting mechanism installed on the outside of the furnace wall 1, and a damper 2 installed inside the adjusting mechanism. A vent is provided inside the furnace wall 1, and an air duct 3 is installed inside the vent. The adjusting mechanism comprises a fixed block 4 detachably mounted on the outside of the furnace wall 1, an air duct 5 connected to the air duct 3 is provided in the middle of the fixed block 4, the damper 2 is installed in the air duct 5, and one end is hinged to the inner wall of the air duct 5, an electric push rod 6 is installed on the outside of the fixed block 4, and the output shaft end of the electric push rod 6 is sealed and extends through the air duct, where a push block 7 in contact with the damper 2 is installed.

[0020] When in use, the adjustment mechanism is first detachably mounted to the outer side of the furnace wall 1 through the fixing block 4, and the air duct 3 is installed in the vent in the furnace wall 1 of the gas quenching furnace. During installation, the air duct 3 fits tightly against the inner wall of the vent, and then it is confirmed whether the damper 2 can rotate smoothly. When the gas quenching furnace is working, the damper 2 is opened by air pressure during the quenching process of the workpiece. In the absence of air pressure, the damper 2 is automatically closed by gravity, thereby realizing the automatic opening and closing of the damper 2, and by installing the electric push rod 6 to drive the push block 7 to move, the damper 2 can be squeezed and driven to rotate, thereby realizing the automatic adjustment of the opening angle of the damper 2 to adapt to different working environments, thereby expanding the scope of use.

[0021] Limiting columns 8 are symmetrically installed at the bottom of both ends of the fixing block 4, and limiting holes that match the positions of the limiting columns 8 are symmetrically opened on the outer side of the furnace wall 1.

[0022] A groove is provided on one side of the limiting hole, and a T-shaped rod 9 is slidably installed inside the groove. A pull rod 10 is fixedly installed at one end of the T-shaped rod 9. The end of the pull rod 10 away from the T-shaped rod 9 extends through the furnace wall and is provided with a handle, and a spring 11 is provided on the outside. One end of the spring 11 is connected to the T-shaped rod 9, and the other end is fixedly connected to the inner wall of the groove.

[0023] During installation, first pull the pull rod 10 toward the outside of the furnace wall 1, thereby driving the T-shaped rod 9 to leave the limiting hole and squeeze the spring 11 sleeved on the outside of the pull rod 10, then align the limiting column 8 of the fixing block 4 with the limiting hole and insert it into the inside, then release the pull rod 10, the spring 11 restores the elastic force, and drives one end of the T-shaped rod 9 to be inserted into the socket in the limiting column 8, to achieve clamping and fixing, thereby completing the installation of the adjustment mechanism. Similarly, when disassembling, you only need to pull the pull rod 10 toward the outside of the furnace wall 1 to pull out the adjustment mechanism as a whole, which facilitates installation and disassembly, brings convenience to operation, and thus improves work efficiency.

[0024] The limiting column 8 is provided with a socket that matches one end of the T-shaped rod 9. A first electromagnetic plate is installed at one end of the T-shaped rod 9, and a second electromagnetic plate with opposite magnetic properties to the first electromagnetic plate is installed inside one side of the slot body. During installation, the first electromagnetic plate and the second electromagnetic plate can be controlled to be energized. According to the principle of mutual attraction between opposite poles, the T-shaped rod 9 is more stable and firm when inserted into the limit position.

[0025] The length of the damper 2 is equal to the diagonal length of the inner contour of the air duct 5. It can ensure that there is no gap between the two sides of the damper 2 and the air duct, thereby playing a dust-proof role.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0027] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An adjustable damper structure for a vacuum gas quenching furnace, characterized in that: The invention comprises a furnace wall (1), an adjusting mechanism installed on the outside of the furnace wall (1), and a damper (2) installed inside the adjusting mechanism, wherein a ventilation opening is provided inside the furnace wall (1), and an air duct (3) is installed inside the ventilation opening; the adjusting mechanism comprises a fixing block (4) detachably installed on the outside of the furnace wall (1); an air duct (5) connected to the air duct (3) is provided in the middle of the fixing block (4); the damper (2) is installed in the air duct (5), and one end is hinged to the inner wall of the air duct (5); an electric push rod (6) is installed on the outside of the fixing block (4); the output shaft end of the electric push rod (6) is sealed and extends through the air duct, and a push block (7) in contact with the damper (2) is installed.

2. The adjustable damper structure for a vacuum air quenching furnace according to claim 1, characterized in that: Limiting columns (8) are symmetrically installed at the bottoms of both ends of the fixing block (4), and limiting holes matching the positions of the limiting columns (8) are symmetrically opened on the outside of the furnace wall (1).

3. The adjustable damper structure for a vacuum air quenching furnace according to claim 2, characterized in that: A groove body is provided on one side of the limiting hole, a T-shaped rod (9) is slidably installed inside the groove body, a pull rod (10) is fixedly installed on one end of the T-shaped rod (9), and the pull rod (10) extends through the end away from the T-shaped rod (9) to the outside of the furnace wall and is provided with a handle, and a spring (11) is provided on the outside, one end of the spring (11) is connected to the T-shaped rod (9), and the other end is fixedly connected to the inner wall of the groove body.

4. The adjustable damper structure for a vacuum air quenching furnace according to claim 3, characterized in that: The limiting column (8) is provided with a socket matching one end of a T-shaped rod (9), one end of the T-shaped rod (9) is installed with a first electromagnetic sheet, and one side of the slot body is internally provided with a second electromagnetic sheet having a magnetic property opposite to that of the first electromagnetic sheet.

5. The adjustable damper structure for a vacuum air quenching furnace according to claim 4, characterized in that: The length of the damper (2) is equal to the diagonal length of the inner contour of the air duct (5).

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