Fog quenching device

Abstract

The utility model discloses a fog-cooling quenching device, which relates to the technical field of quenching devices and comprises a support, a round tube is rotatably connected onto the support and is driven by a stepping motor to rotate around the axis of the round tube in a reciprocating manner, a plurality of atomizing nozzles are uniformly connected to the outer side of the round tube along the axial direction of the round tube, one end of the round tube is connected with a liquid conveying tube, and the other end of the round tube is connected with a water pump. The liquid inlet end of the liquid conveying pipe is connected with a variable frequency pump. According to the fog quenching device, a cooling medium can preferentially act on the thick-wall area of the profile, the cooling effect of the thick-wall area is enhanced, the temperature difference between the thin part and the thick part of the profile is reduced, and the twisting degree is reduced; meanwhile, the water pressure is adjusted through the variable frequency pump, the spraying strength of the atomizing nozzle is controlled, and the temperature difference between the thick wall and the thin wall can be further reduced.

Description

Technical Field

[0001] This utility model relates to the field of quenching equipment technology, specifically a mist-cooling quenching device. Background Technology

[0002] For profiles with non-uniform cross-sectional thickness distribution, when using traditional air-cooling or water-cooling quenching processes, the heat exchange efficiency between the cooling medium and the workpiece surface varies significantly in different thickness regions. Thick-walled regions form cooling lag zones due to their larger heat capacity, while thin-walled regions complete cooling prematurely, resulting in residual stress gradients distributed along the cross-section. The residual stress is released in subsequent extrusion and straightening processes, causing periodic torsional deformation of the profile along its length.

[0003] Therefore, it is necessary to propose a mist-cooling quenching device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a mist-cooling quenching device to solve the problem that existing quenching methods mentioned in the background art are prone to causing profile twisting and deformation.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a mist cooling quenching device, including a support, a circular tube rotatably connected to the support, the circular tube being driven by a stepper motor to reciprocate around its axis, a plurality of atomizing nozzles being uniformly connected along its axial direction on the outer side of the circular tube, a liquid delivery pipe being connected to one end of the circular tube, and a variable frequency pump being connected to the liquid inlet end of the liquid delivery pipe.

[0008] Preferably, one end of the circular tube is fixedly connected to an inlet pipe, and the other end of the circular tube is fixedly connected to a rotating shaft. Both the inlet pipe and the rotating shaft are rotatably connected to the support via bearings.

[0009] Preferably, the inlet pipe and the delivery pipe are connected by a rotary joint.

[0010] Preferably, the rotating shaft is connected to the output shaft of the stepper motor via a coupling.

[0011] Preferably, the diameter of the circular tube is larger than the diameter of the infusion tube and the inlet tube.

[0012] Preferably, the circular tube is parallel to the profile to be cooled.

[0013] Preferably, both the stepper motor and the frequency converter pump are electrically connected to the controller.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a mist cooling quenching device, which has the following beneficial effects:

[0016] 1. This mist cooling quenching device sets atomizing nozzles on the outside of the circular tube and adjusts the orientation of the atomizing nozzles by a stepper motor so that the spray area corresponds to the thick-walled area of ​​the profile to be cooled, thereby reducing the temperature difference between the thinner and thicker parts of the profile and reducing the twist.

[0017] 2. This mist cooling quenching device uses a variable frequency pump to pump liquid into the circular tube. By adjusting the power of the variable frequency pump, the spray intensity of the atomizing nozzle can be adjusted according to the thickness difference between the thick-walled and thin-walled areas to ensure uniform cooling and reduce torsion.

[0018] 2. This mist-cooling quenching device, by setting a large-diameter circular tube, can significantly reduce the friction resistance and make the pressure of the atomizing nozzles in each area more balanced. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the circular tube of this utility model;

[0021] Figure 3 This is a schematic diagram of the utility model in use.

[0022] In the diagram: 1. Support; 2. Circular tube; 3. Atomizing nozzle; 4. Stepper motor; 5. Variable frequency pump; 6. Infusion pipe; 7. Rotary joint; 8. Inlet pipe; 9. Shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-3 As shown, a mist cooling quenching device includes a support 1, a circular tube 2 rotatably connected to the support 1, the circular tube 2 being driven by a stepper motor 4 to reciprocate around its axis, a plurality of atomizing nozzles 3 being uniformly connected along its axial direction on the outer side of the circular tube 2, a liquid delivery pipe 6 being connected to one end of the circular tube 2, and a variable frequency pump 5 being connected to the liquid inlet end of the liquid delivery pipe 6.

[0025] In use, the device is positioned and installed on one side of the heat-treated profile conveying channel, with the round tube 2 parallel to the profile to be quenched. The round tube 2 is driven to rotate by the stepper motor 4, and the direction of the atomizing nozzle 3 is controlled so that the cooling medium acts preferentially on the thick-walled area of ​​the profile, enhancing the cooling effect in this area, reducing the temperature difference between the thinner and thicker parts of the profile, and reducing the torsion. At the same time, the water pressure is adjusted by the frequency converter pump 5 to control the spray intensity of the atomizing nozzle 3, further reducing the temperature difference between the thick and thin walls.

[0026] In some embodiments, one end of the circular tube 2 is fixedly connected to an inlet pipe 8, and the other end of the circular tube 2 is fixedly connected to a rotating shaft 9. Both the inlet pipe 8 and the rotating shaft 9 are rotatably connected to the support 1 via bearings. By fixing the inlet pipe 8, which is rotatably connected to the support 1, at the end of the circular tube 2, the circular tube 2 is connected to the infusion tube 6; by fixing the rotating shaft 9, which is rotatably connected to the support 1, at the end of the circular tube 2, the circular tube 2 is connected to the stepper motor 4 for transmission. The axes of the circular tube 2, the inlet pipe 8, and the rotating shaft 9 are collinear to ensure the smooth rotation of the circular tube 2.

[0027] Specifically, to prevent the infusion tube 6 from twisting or shaking, the infusion tube 6 is made of rigid tubing, and the inlet tube 8 is connected to the infusion tube 6 via a rotary joint 7.

[0028] Specifically, the rotating shaft 9 is connected to the output shaft of the stepper motor 4 via a coupling.

[0029] In some embodiments, the diameter of the circular tube 2 is larger than the diameters of the infusion tube 6 and the inlet tube 8. By setting the circular tube 2 with a larger diameter, the friction resistance can be significantly reduced, making the pressure of the atomizing nozzles 3 in each area more balanced, and avoiding the problem that the near-end atomizing nozzle 3 will have excessive water volume due to high pressure, while the far-end atomizing nozzle 3 will fail due to low pressure.

[0030] Both the stepper motor 4 and the variable frequency pump 5 are electrically connected to the controller. Based on the location and thickness difference of the thick-walled area of ​​the profile to be cooled, the spray intensity is increased when the thickness difference between the thick-walled and thin-walled areas is large, and decreased otherwise. The controller sets the spray angle and spray volume of the atomizing nozzle 3. During execution, the controller sends a pulse signal to drive the stepper motor 4 for angle positioning, thereby driving the circular tube 2 to rotate, aligning the spray area with the thick-walled area of ​​the profile; and simultaneously adjusts the power of the variable frequency pump 5 to adjust the spray intensity of the atomizing nozzle 3.

[0031] Working principle: In use, it is placed on one side of the heat-treated profile conveying channel. Based on the location and thickness difference of the thick-walled area of ​​the profile to be cooled, the controller sets the spray angle and spray volume of the atomizing nozzle 3, ensuring that the spray area of ​​the atomizing nozzle 3 corresponds to the thick-walled area of ​​the profile to be cooled. During profile conveying, the variable frequency pump 5 pumps the cooling medium into the circular pipe 2 through the liquid delivery pipe 6, and then sprays it out from the atomizing nozzle 3 to the thick-walled area of ​​the profile to be cooled, providing targeted cooling to that area.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mist-cooling quenching device, comprising a support (1), characterized in that: A circular tube (2) is rotatably connected to the support (1). The circular tube (2) is driven by a stepper motor (4) to reciprocate around its axis. Several atomizing nozzles (3) are evenly connected to the outer side of the circular tube (2) along its axial direction. One end of the circular tube (2) is connected to an infusion tube (6). The inlet end of the infusion tube (6) is connected to a frequency converter pump (5).

2. The mist cooling quenching device according to claim 1, characterized in that: One end of the circular tube (2) is fixedly connected to an inlet pipe (8), and the other end of the circular tube (2) is fixedly connected to a rotating shaft (9). Both the inlet pipe (8) and the rotating shaft (9) are rotatably connected to the support (1) through bearings.

3. The mist cooling quenching device according to claim 2, characterized in that: The inlet pipe (8) and the delivery pipe (6) are connected by a rotary joint (7).

4. The mist cooling quenching device according to claim 2, characterized in that: The rotating shaft (9) is connected to the output shaft of the stepper motor (4) via a coupling.

5. The mist-cooling quenching device according to claim 1, characterized in that: The diameter of the circular tube (2) is greater than the diameter of the infusion tube (6) and the inlet tube (8).

6. The mist cooling quenching device according to claim 1, characterized in that: The circular tube (2) is parallel to the profile to be cooled.

7. The mist-cooling quenching device according to claim 1, characterized in that: Both the stepper motor (4) and the frequency converter pump (5) are electrically connected to the controller.

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