A spraying device for a flat quenching apparatus

Abstract

This utility model discloses a spray device for planar quenching equipment, belonging to the technical field of local quenching equipment. It includes a support, a thermoelectric battery, and an electric fan. The upper end of the support is connected to a speed-increasing air duct, while a quenching nozzle is movably inserted into the lower end of the support. The quenching nozzle is connected to an adjusting base and can spray coolant through the nozzle to quench the surface of the planar workpiece. A thermoelectric battery is arranged outside the speed-increasing air duct, connected to an induction controller circuit. The induction controller is connected to the electric fan and a push-pull electromagnet, controlling the electric fan and the electromagnet to turn on or off. In use, the induction controller can simultaneously detect the surface temperature of the workpiece and the voltage of the thermoelectric battery. When the electric fan starts, air-cooled quenching occurs; when the temperature drops below a threshold, the push-pull electromagnet is activated, and water-cooled quenching occurs through the quenching nozzle. This optimizes the cooling method and suppresses deformation and cracks that occur during the quenching process.

Description

Technical Field

[0001] This utility model relates to the technical field of local quenching equipment, specifically to a spray device for planar quenching equipment. Background Technology

[0002] Quenching is a common metal heat treatment process. By rapidly cooling the surface of a high-temperature metal, metal workpieces can obtain higher surface hardness and improve their strength and wear resistance. However, for large planar structures that cannot be heated as a whole, local quenching and segmented quenching processes must be used.

[0003] Specifically, the large flat surface is divided into multiple areas, and each area is heated to the austenitizing temperature using induction heating, flame heating, or local resistance heating, and then immediately quenched. However, during the quenching process, the thermal stress and structural stress caused by rapid cooling are difficult to release, which can lead to workpiece deformation and cracking risks.

[0004] In view of this, in order to avoid the problem of cracking of high alloy steel during quenching, it is necessary to make the cooling during quenching more uniform. To this end, the applicant proposes a new invention that combines air cooling and water cooling to extend the cooling time, thereby reducing the risk of workpiece deformation and cracking. Utility Model Content

[0005] Therefore, this utility model provides a spray device for planar quenching equipment to solve the problem of reduced workpiece deformation and cracking caused by excessively rapid temperature drop in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a spray device for a planar quenching equipment, comprising:

[0008] The bracket contains an internal sensor controller, is integrally formed and connected to the speed-increasing air duct at the upper end, and has a quenching nozzle movably inserted at the lower end. The end of the quenching nozzle is mounted on an adjusting base, which is connected to a coolant. The quenching nozzle is adapted to extend into the speed-increasing air duct to spray water mist for planar quenching.

[0009] Several thermoelectric batteries are arranged on the outside of the speed-increasing air duct, and the thermoelectric batteries are connected to the induction controller circuit.

[0010] An electric fan is installed at the end of the speed-increasing air duct and connected to the thermoelectric battery circuit through the induction controller. The induction controller is connected to the push-pull electromagnet circuit installed on both sides of the adjustment base.

[0011] When the electric fan is started, it is quenched by air cooling, and when the temperature drops below the threshold, the push-pull electromagnet is started, and the quenching nozzle is used for water cooling quenching.

[0012] Furthermore, the sensing controller includes a microcontroller, a voltage sensor, and a temperature sensor. A voltage sensor is mounted on the thermoelectric battery, and the voltage sensor is signal-connected to the microcontroller. The microcontroller is signal-connected to the temperature sensor.

[0013] When the microcontroller detects a voltage difference in the thermoelectric battery through the voltage sensor and detects that the temperature is higher than a threshold through the temperature sensor, the electric fan starts.

[0014] When the microcontroller senses that the temperature is below a threshold through the temperature sensor and there is a pressure difference in the thermoelectric battery, the push-pull electromagnet is activated.

[0015] Furthermore, the adjustment base includes:

[0016] The connecting pipe has a mounting plate at one end and a clamp at the other end;

[0017] A fixed shaft is fixedly disposed within the chuck, and a fastener is threaded onto the axis of the fixed shaft.

[0018] Furthermore, the clamp is provided with a long handle, which is a hollow structure and is connected to the connecting pipe through a flexible tube.

[0019] The head end of the long handle is rotatably mounted on the fixed shaft, and the chuck clamps and fixes the long handle by tightening the fasteners. The tail end of the long handle is connected to the tank containing coolant.

[0020] Furthermore, the quenching nozzle includes a needle tube and a nozzle, with the tail end of the needle tube passing through the mounting plate and communicating with the connecting pipe;

[0021] The syringe is closed at the front end and the nozzle is provided from the side.

[0022] Furthermore, the speed-increasing air duct includes:

[0023] The cylinder has an internal speed-increasing cavity, an electric fan is installed at the end of the speed-increasing cavity, and a battery mounting slot is provided on the outside of the cylinder, where the thermoelectric battery is installed.

[0024] The guide hole has one end connected to the speed-increasing inner cavity and the other end is fitted with a needle tube. The nozzle is adapted to extend into the speed-increasing inner cavity through the guide hole to release spray.

[0025] This utility model has the following advantages:

[0026] The spray device for planar quenching equipment disclosed in this utility model generates an electromotive force through temperature difference, drives an electric fan to cool the workpiece using air cooling, and senses temperature changes through an induction controller. When the surface temperature of the workpiece is below the critical point, quenching liquid is sprayed directionally onto the heated area through quenching nozzles for secondary quenching. Compared with the prior art, this utility model can effectively reduce the cooling rate of the workpiece during quenching, so that thermal stress can be fully released, thereby suppressing the warping deformation problem of the workpiece during the quenching and cooling process and reducing the risk of workpiece deformation and cracking. Attached Figure Description

[0027] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] Figure 1 A perspective view of the spraying device provided by this utility model;

[0030] Figure 2 A perspective view of the adjustment base provided by this utility model;

[0031] Figure 3 A three-dimensional view of the speed-increasing air duct provided for this utility model;

[0032] Figure 4 A perspective view of the induction controller provided by this utility model;

[0033] In the diagram: 1. Bracket; 2. Speed-increasing air duct; 21. Cylinder body; 22. Guide hole; 23. Inner cavity; 24. Battery mounting slot; 3. Thermoelectric battery; 4. Adjustable base; 41. Mounting plate; 42. Connecting pipe; 43. Fastener; 44. Fixed axis; 45. Clamp; 5. Electric fan; 6. Push-pull electromagnet; 7. Quenching nozzle; 71. Needle tube; 72. Nozzle; 8. Induction controller; 81. Microcontroller; 82. Voltage sensor; 83. Temperature sensor; 9. Long handle. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Please refer to this as well. Figures 1-4 The spray device for planar quenching equipment disclosed in this utility model combines air cooling and water cooling in stages, that is, first air cooling to below the critical point and then spraying liquid, thereby reducing the accumulation of thermal stress and thus optimizing the cooling method.

[0036] In one specific embodiment of this utility model, the spray device for the planar quenching equipment includes a support 1, a thermoelectric battery 3, and an electric fan 5. The upper end of the support 1 is integrally formed and connected to the speed-increasing air duct 2, while the lower end of the support 1 is movably inserted with a quenching nozzle 7. The end of the quenching nozzle 7 is mounted on and connected to the adjusting base 4. Since the adjusting base 4 is connected to a coolant, the coolant can be sprayed out through the quenching nozzle 7 and sprayed onto the surface of the workpiece to be quenched through the speed-increasing air duct 2, thereby quenching the planar surface. On the other hand, a number of thermoelectric batteries 3 are arranged on the outside of the speed-increasing air duct 2. The thermoelectric batteries 3 are electrically connected to an induction controller 8, which is encapsulated inside the support 1. The induction controller 8 is also connected to the electric fan 5 and a push-pull electromagnet 6, and controls the electric fan 5 and the push-pull electromagnet 6 to turn on or off. The electric fan 5 is installed at the end of the speed-increasing air duct 2, while the push-pull electromagnet 6 is installed on both sides of the adjusting base 4. The induction controller 8 can simultaneously detect the surface temperature of the workpiece and the voltage of the thermoelectric battery 3. When the electric fan 5 is started, it is quenched by air cooling. When the temperature drops below the threshold, the push-pull electromagnet 6 is started, and it is quenched by water cooling through the quenching nozzle 7.

[0037] In this embodiment, the thermoelectric battery 3 is in direct contact with the quenched workpiece. Due to the significant temperature difference between the surface temperature of the quenched workpiece and the air temperature, this temperature difference, through the Seebeck effect, allows heat energy to be directly converted into electrical energy, which then drives the electric fan 5 to rotate, thereby blowing air onto the surface of the quenched workpiece to lower its temperature. Furthermore, the thermoelectric battery 3 also powers the induction controller 8. Specifically, the induction controller 8 includes a microcontroller 81, a voltage sensor 82, and a temperature sensor 83. The voltage sensor 82 is mounted on the thermoelectric battery 3 and is signal-connected to the microcontroller 81. The microcontroller 81 is signal-connected to the temperature sensor 83. When the microcontroller 81 senses a voltage difference in the thermoelectric battery 3 through the voltage sensor 82 and senses the surface temperature of the workpiece through the temperature sensor 83, and when the temperature sensor 83 senses a temperature higher than a threshold, the electric fan 5 starts. On the other hand, when the temperature sensor 83 detects that the temperature is below the threshold, the microcontroller 81 controls the push-pull electromagnet 6 to start, which allows the quenching nozzle 7 to enter the speed-increasing air duct 2 and spray coolant to continue to reduce the temperature of the workpiece, thereby achieving the effect of intermittent cooling and effectively reducing the damage of thermal stress to the workpiece.

[0038] In some embodiments, the quenching nozzle 7 includes a needle tube 71 and a nozzle 72. The tail end of the needle tube 71 passes through the mounting plate 41 and is fixedly connected to the connecting pipe 42, while the head end of the needle tube 71 is closed and the nozzle 72 is provided from the side. Since the needle tube 71 is inserted into the guide hole 22 of the speed-increasing air duct 2, the nozzle 72 is blocked by the guide hole 22 and is not connected to the outside. Once the push-pull electromagnet 6 is activated, the needle tube 71 moves forward out of the guide hole 22, exposing the nozzle 72 to the speed-increasing inner cavity 23, thereby spraying coolant outward to achieve the technical effect of liquid cooling quenching.

[0039] In this embodiment, the speed-increasing air duct 2 includes a cylinder 21, a speed-increasing inner cavity 23, and a guide hole 22. The cylinder 21 has a battery mounting slot 24 on its exterior, containing a thermoelectric battery 3. The thermoelectric battery 3 contacts the high-temperature workpiece and generates a voltage difference to drive the microcontroller and the electric fan 5. Furthermore, the cylinder 21 contains the speed-increasing inner cavity 23, with the electric fan 5 mounted at one end. One end of the guide hole 22 communicates with the speed-increasing inner cavity 23, and the other end contains a needle tube 71. A nozzle 72 is adapted to extend into the speed-increasing inner cavity 23 through the guide hole 22 to release a spray to cool the workpiece. The speed-increasing inner cavity 23 is funnel-shaped, which increases the flow rate of the overflowing airflow, thereby improving the heat dissipation effect on the workpiece.

[0040] In a specific embodiment of this utility model, the adjusting base 4 includes a connecting pipe 42 and a fixed shaft 44. One end of the connecting pipe 42 is provided with a mounting plate 41, on which a push-pull electromagnet 6 is mounted. The other end of the connecting pipe 42 is provided with a clamp 45, and the fixed shaft 44 is fixedly disposed inside the clamp 45. A fastener 43 is threaded at the axis of the fixed shaft 44. By tightening the fastener 43, a preload can be generated, causing the clamp 45 to narrow.

[0041] In this embodiment, a long handle 9 is provided inside the chuck 45. The long handle 9 has a hollow structure and is connected to the connecting pipe 42 through a flexible hose. The head end of the long handle 9 is rotatably mounted on the fixed shaft 44. The chuck 45 clamps and fixes the long handle 9 by tightening the fastener 43. The tail end of the long handle 9 is connected to the tank containing coolant so as to supply coolant to the adjusting base 4.

[0042] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A spraying device for a planar quenching equipment, characterized in that, include: The bracket (1) is internally encapsulated with an induction controller (8), and its upper end is integrally connected with the speed-increasing air duct (2). The lower end is movably inserted with a quenching nozzle (7). The end of the quenching nozzle (7) is installed on an adjusting base (4). The adjusting base (4) is externally connected to a coolant. The quenching nozzle (7) is adapted to extend into the speed-increasing air duct (2) to spray water mist for plane quenching. A number of thermoelectric batteries (3) are arranged outside the speed-increasing air duct (2), and the thermoelectric batteries (3) are connected to the induction controller (8) circuit. An electric fan (5) is installed at the end of the speed-increasing air duct (2) and is connected to the thermoelectric battery (3) via the induction controller (8). The induction controller (8) is connected to the push-pull electromagnet (6) installed on both sides of the adjustment base (4). When the electric fan (5) is started, it is quenched by air cooling, and when the temperature drops below the threshold, the push-pull electromagnet (6) is started, and the quenching nozzle (7) is water-cooled for quenching.

2. The spray device for planar quenching equipment according to claim 1, characterized in that, The sensing controller (8) includes a microcontroller (81), a voltage sensor (82), and a temperature sensor (83). The voltage sensor (82) is mounted on the thermoelectric battery (3). The voltage sensor (82) is connected to the microcontroller (81) via signal connection, and the microcontroller (81) is connected to the temperature sensor (83) via signal connection. When the microcontroller (81) senses a pressure difference in the thermoelectric battery (3) through the voltage sensor (82) and senses a temperature higher than a threshold through the temperature sensor (83), the electric fan (5) starts. When the microcontroller (81) senses that the temperature is below the threshold through the temperature sensor (83) and there is a pressure difference in the thermoelectric battery (3), the push-pull electromagnet (6) is activated.

3. The spraying device for planar quenching equipment according to claim 1, characterized in that, The adjusting base (4) includes: The connecting pipe (42) has a mounting plate (41) at one end and a clamp (45) at the other end. A fixed shaft (44) is fixedly disposed inside the chuck (45), and a fastener (43) is threaded at the axis of the fixed shaft (44).

4. The spraying device for planar quenching equipment according to claim 3, characterized in that, The clamp (45) is provided with a long handle (9), which is a hollow structure and is connected to the connecting pipe (42) through a flexible tube. The head end of the long handle (9) is rotatably mounted on the fixed shaft (44), and the chuck (45) clamps and fixes the long handle (9) by tightening the fastener (43). The tail end of the long handle (9) is connected to the tank containing coolant.

5. The spraying device for planar quenching equipment according to claim 4, characterized in that, The quenching nozzle (7) includes a needle tube (71) and a nozzle (72), the tail end of which passes through the mounting plate (41) and communicates with the connecting pipe (42); The needle tube (71) is closed at the front end and the nozzle (72) is provided from the side.

6. The spraying device for planar quenching equipment according to claim 5, characterized in that, The speed-increasing air duct (2) includes: The cylinder (21) has an internal speed-increasing cavity (23) inside, and an electric fan (5) is installed at the end of the internal speed-increasing cavity (23). The cylinder (21) has an external battery mounting slot (24) outside, and the thermoelectric battery (3) is installed in the battery mounting slot (24). The guide hole (22) is connected to the speed-increasing inner cavity (23) at one end and a needle tube (71) is inserted into the other end. The nozzle (72) is adapted to extend into the speed-increasing inner cavity (23) through the guide hole (22) to release spray.

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