Inert gas hardening equipment

Abstract

The utility model discloses inert gas hardening equipment which comprises an electric heating box, a sealing door is arranged on the front face of the electric heating box, a plurality of evenly-distributed air outlet holes are formed in the sealing door, and exhaust mechanisms for exhausting air in the electric heating box are arranged in the air outlet holes. The closed space is adopted, inert gas nitrogen is introduced, the density of the nitrogen is smaller than that of air, the control valve is arranged on the air inlet pipe, the nitrogen is controlled to slowly enter the electric heating box from the upper end of the device, the air in the box body is pressed out through the nitrogen, and the exhaust mechanism is arranged at the lower end of the sealing door. And meanwhile, a detection assembly is arranged, when nitrogen is exhausted, it is indicated that the electric heating box is filled with nitrogen, due to the fact that the nitrogen is inert gas and dehumidified through a freezing dryer, the color of an internal product is still kept bright at high temperature, and the purpose that the colored product can be hardened at high temperature is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardening equipment, in particular to an inert gas hardening equipment. Background Art

[0002] Inert gas hardening equipment is a device used to cure or harden materials, and the gas used in it is called an inert gas. Inert gas refers to a gas that hardly reacts chemically with other substances at room temperature. Common inert gases include nitrogen, argon, and helium. During the hardening process, the inert gas hardening equipment injects inert gas into a specific environment. This gas can provide a protective film to prevent the material from chemically reacting with oxygen, water vapor, etc. in the external environment. In this way, the material can be cured or hardened to improve its physical properties and durability. Inert gas hardening equipment is widely used in many fields, such as chemical industry, material science, and electronic manufacturing. It is used to protect and enhance the surface of various materials to make them have better corrosion resistance, wear resistance, and high temperature resistance. At the same time, inert gas hardening can also be used to prevent oxidation or corrosion of materials and extend their service life.

[0003] The existing device still has the following defects:

[0004] Existing devices are usually conventional electric hardening furnaces, either box-type or tunnel kiln-type, all of which exhaust air to generate low pressure, and circulate external air into the box. In this way, during operation, while exhausting the air, inert gas may be drawn out of the box, and at the same time, there may be untreated clean air inside the box. Therefore, we need to propose an inert gas hardening equipment. Utility Model Content

[0005] The purpose of the utility model is to provide an inert gas hardening device, which adopts a closed space, is connected to the inert gas nitrogen, and utilizes the fact that the density of nitrogen is less than that of air. A control valve is arranged on the air inlet pipe to control the nitrogen to slowly enter the electric heating box from the upper end of the device, and the air in the box is pressed out by the nitrogen. Because nitrogen is an inert gas and is dehumidified by a cold dryer, the color of the internal product remains bright at high temperature, thereby achieving the purpose of high-temperature hardening of colored products, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An inert gas hardening device comprises an electric heating box, a sealing door is arranged on the front of the electric heating box, a plurality of evenly distributed air outlets are opened on the sealing door, and exhaust mechanisms for exhausting the air inside the electric heating box are arranged inside the plurality of air outlets;

[0008] The upper end of the electric heating box is fixedly connected to an air intake pipe, one end of the air intake pipe is fixedly connected to a cold dryer, the cold dryer is fixedly installed on the upper end of the electric heating box, one end of a connecting pipe is fixedly connected to the side wall of the cold dryer, and the other end of the connecting pipe is externally connected to a nitrogen generator.

[0009] Preferably, an observation window is fixedly connected to the interior of the sealed door, and a handle is provided on the front of the sealed door.

[0010] Preferably, the exhaust mechanism includes an exhaust pipe fixedly installed inside a plurality of exhaust holes, the interiors of the plurality of exhaust pipes are fixedly connected to a mounting plate, the interior of the mounting plate is slidably connected to a sliding rod, the outer side of the sliding rod is sleeved with a spring, one end of the sliding rod is fixedly connected to a fixing disk, the other end of the sliding rod is fixedly connected to a sealing disk, the side wall of the sealing disk is abutted with a fixing ring, the fixing ring is fixedly connected to the interior of the exhaust pipe, and one end of the exhaust pipe is provided with a detection component used in conjunction with the exhaust mechanism.

[0011] Preferably, the detection assembly includes an internal threaded ring threadedly connected to the outside of the air outlet pipe, the interior of the internal threaded ring is fixedly connected to a bent pipe, one end of the bent pipe abuts against one end of the air outlet pipe, the other end of the bent pipe is fixedly connected to a U-shaped tube, and a sealing plug is provided at the bottom of the U-shaped tube.

[0012] Preferably, a controller is fixedly connected to the side wall of the electric heating box, and the controller is electrically connected to the cold dryer and the nitrogen generator respectively.

[0013] Preferably, a heat conducting plate is fixedly connected to the interior of the electric heating box, and the heat conducting plate is a triangular plate.

[0014] Preferably, a support rod is fixedly connected to the interior of the electric heating box, a heat conduction leakage plate is fixedly connected to the upper end of the support rod, and the heat conduction leakage plate is fixedly installed inside the electric heating box.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model adopts a closed space, connects inert gas nitrogen, utilizes the density of nitrogen being less than that of air, and is provided with a control valve on the air inlet pipe to control the nitrogen to slowly enter the electric heating box from the upper end of the device, presses out the air in the box through the nitrogen, and is provided with an exhaust mechanism at the lower end of the sealed door to facilitate exhausting the air inside the device, and is also provided with a detection component. When the nitrogen is exhausted, it indicates that the interior of the electric heating box is full of nitrogen, because nitrogen is an inert gas, and is dehumidified by a cold dryer, so that the color of the internal product remains bright at high temperature, thereby achieving the purpose of high-temperature hardening of the colored product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the filter box of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the exhaust mechanism of the utility model.

[0020] In the figure: 1. electric heating box; 2. sealing door; 3. observation window; 4. air outlet; 5. exhaust mechanism; 51. air outlet pipe; 52. mounting plate; 53. sliding rod; 54. spring; 55. fixing plate; 56. sealing plate; 57. fixing ring; 58. detection component; 581. internal thread ring; 582. elbow; 583. U-shaped pipe; 584. sealing plug; 6. controller; 7. heat transfer plate; 8. support rod; 9. heat transfer leakage plate; 10. air inlet pipe; 11. cold dryer; 12. connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] An inert gas hardening device comprises an electric heating box 1, a sealing door 2 is arranged on the front of the electric heating box 1, a plurality of evenly distributed air outlets 4 are opened on the sealing door 2, and an exhaust mechanism 5 for exhausting the air inside the electric heating box 1 is arranged inside the plurality of air outlets 4;

[0024] An air inlet pipe 10 is fixedly connected to the upper end of the electric heating box 1, one end of the air inlet pipe 10 is fixedly connected to a cold dryer 11, the cold dryer 11 is fixedly installed on the upper end of the electric heating box 1, one end of a connecting pipe 12 is fixedly connected to the side wall of the cold dryer 11, and the other end of the connecting pipe 12 is externally connected to a nitrogen generator.

[0025] An observation window 3 is fixedly connected to the inside of the sealed door 2, and a handle is provided on the front of the sealed door 2.

[0026] Exemplarily, the observation window 3 is convenient for observing the processing status of the workpiece inside the electric heating box 1, and the handle is convenient for opening and closing the sealing door 2.

[0027] The exhaust mechanism 5 includes an exhaust pipe 51 fixedly installed inside a plurality of exhaust holes 4, the interiors of the plurality of exhaust pipes 51 are fixedly connected with a mounting plate 52, the interior of the mounting plate 52 is slidably connected with a slide rod 53, the outer side of the slide rod 53 is sleeved with a spring 54, one end of the slide rod 53 is fixedly connected with a fixing disk 55, the other end of the slide rod 53 is fixedly connected with a sealing disk 56, the side wall of the sealing disk 56 is abutted with a fixing ring 57, the fixing ring 57 is fixedly connected to the interior of the exhaust pipe 51, and one end of the exhaust pipe 51 is provided with a detection component 58 used in conjunction with the exhaust mechanism 5.

[0028] Illustratively, when the electric heating box 1 is exhausted, the air pressure pushes the sealing disk 56, and the sealing disk 56 drives the slide bar 53 to move away from the sealing door 2, and the spring 54 is compressed. When the exhaust of the electric heating box 1 stops, under the elastic force of the spring 54, the fixed disk 55 drives the slide bar 53 to move toward the sealing door 2, and drives the sealing disk 56 to be stuck on the fixing ring 57, thereby sealing the air outlet pipe 51.

[0029] The detection component 58 includes an internal threaded ring 581 threadedly connected to the outside of the air outlet pipe 51, and a curved pipe 582 is fixedly connected inside the internal threaded ring 581. One end of the curved pipe 582 abuts against one end of the air outlet pipe 51, and the other end of the curved pipe 582 is fixedly connected to a U-shaped tube 583. A sealing plug 584 is provided at the bottom of the U-shaped tube 583.

[0030] Exemplarily, the elbow 582 is installed on the outlet pipe 51 through the internal threaded ring 581. The elbow 582 fixes the U-shaped tube 583. The U-shaped tube 583 is a transparent tube, and the interior of the U-shaped tube 583 is filled with indigo reagent. When nitrogen passes through, the indigo reagent reacts with nitrogen to produce a blue product. At this time, the gas supply can be notified, and the sealing plug 584 facilitates the discharge of the indigo reagent.

[0031] A controller 6 is fixedly connected to the side wall of the electric heating box 1 , and the controller 6 is electrically connected to the cold dryer 11 and the nitrogen generator respectively.

[0032] Exemplarily, the controller 6 controls the start and stop of the electric heating box 1, the cold dryer 11, and the nitrogen generator.

[0033] A heat conducting plate 7 is fixedly connected inside the electric heating box 1, and the heat conducting plate 7 is a triangular plate.

[0034] Exemplarily, the heat conducting plate 7 facilitates heat transfer, and the design of the triangular plate facilitates air to flow out in one direction when nitrogen is discharged from the air.

[0035] A support rod 8 is fixedly connected to the inside of the electric heating box 1 , and a heat conduction leakage plate 9 is fixedly connected to the upper end of the support rod 8 . The heat conduction leakage plate 9 is fixedly installed inside the electric heating box 1 .

[0036] Exemplarily, the heat-conducting drain plate 9 can reduce the contact area between the bottom of the workpiece and the supporting surface, while the thermal conductivity facilitates heating of the workpiece.

[0037] Working principle: When the utility model is used, the workpiece is placed on the heat-conducting leakage plate 9, which can reduce the contact area between the bottom of the workpiece and the supporting surface. The sealing door 2 is closed, and the external nitrogen generator is controlled by the controller 6 to supply air. After the nitrogen passes through the cold dryer 11 for dehumidification, it enters the electric heating box 1 through the air inlet pipe 10. The air inlet pipe 10 is provided with a control valve to control the nitrogen to slowly enter the electric heating box 1 from the upper end of the device, and the air in the box is pressed out by the nitrogen, and the exhaust is performed through the exhaust mechanism 5 at the lower end. The design of the triangular plate makes it convenient for the air to be discharged by the nitrogen, and the air flows out in one direction. The electric heating box 1 is heated by the controller 6 to harden the workpiece;

[0038] When the electric heating box 1 is exhausted, the air pressure pushes the sealing disk 56, and the sealing disk 56 drives the slide bar 53 to move away from the sealing door 2, and the spring 54 is compressed. When the electric heating box 1 stops exhausting, under the elastic force of the spring 54, the fixed disk 55 drives the slide bar 53 to move toward the sealing door 2, and drives the sealing disk 56 to be stuck on the fixed ring 57, so as to seal the air outlet pipe 51. The bent pipe 582 is installed on the air outlet pipe 51 through the internal threaded ring 581. The bent pipe 582 fixes the U-shaped tube 583. The U-shaped tube 583 is a transparent tube, and the interior of the U-shaped tube 583 is equipped with indigo reagent. When nitrogen passes through, the indigo reagent reacts with nitrogen to produce a blue product. At this time, the gas supply can be notified, and the sealing plug 584 facilitates the discharge of the indigo reagent.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inert gas hardening device, comprising an electric heating box (1), characterized in that: The front of the electric heating box (1) is provided with a sealed door (2), the sealed door (2) is provided with a plurality of evenly distributed air outlet holes (4), and the interiors of the plurality of air outlet holes (4) are each provided with an exhaust mechanism (5) for exhausting the air inside the electric heating box (1); The upper end of the electric heating box (1) is fixedly connected to an air intake pipe (10), one end of the air intake pipe (10) is fixedly connected to a cold dryer (11), the cold dryer (11) is fixedly installed on the upper end of the electric heating box (1), one end of a connecting pipe (12) is fixedly connected to a side wall of the cold dryer (11), and the other end of the connecting pipe (12) is externally connected to a nitrogen generator.

2. The inert gas hardening device according to claim 1, characterized in that: An observation window (3) is fixedly connected to the interior of the sealed door (2), and a handle is provided on the front of the sealed door (2).

3. The inert gas hardening device according to claim 1, characterized in that: The exhaust mechanism (5) comprises an exhaust pipe (51) fixedly mounted inside a plurality of exhaust holes (4); the interiors of the plurality of exhaust pipes (51) are all fixedly connected to a mounting plate (52); the interior of the mounting plate (52) is slidably connected to a slide rod (53); the outer side of the slide rod (53) is sleeved with a spring (54); one end of the slide rod (53) is fixedly connected to a fixing plate (55); the other end of the slide rod (53) is fixedly connected to a sealing plate (56); a side wall of the sealing plate (56) is abutted against a fixing ring (57); the fixing ring (57) is fixedly connected to the interior of the exhaust pipe (51); and one end of the exhaust pipe (51) is provided with a detection component (58) for use with the exhaust mechanism (5).

4. The inert gas hardening device according to claim 3, characterized in that: The detection assembly (58) comprises an internal threaded ring (581) threadedly connected to the outside of the air outlet pipe (51); a curved pipe (582) is fixedly connected to the inside of the internal threaded ring (581); one end of the curved pipe (582) abuts against one end of the air outlet pipe (51); the other end of the curved pipe (582) is fixedly connected to a U-shaped pipe (583); and a sealing plug (584) is provided at the bottom of the U-shaped pipe (583).

5. The inert gas hardening device according to claim 1, characterized in that: A controller (6) is fixedly connected to the side wall of the electric heating box (1), and the controller (6) is electrically connected to the cold dryer (11) and the nitrogen generator respectively.

6. The inert gas hardening device according to claim 5, characterized in that: A heat conducting plate (7) is fixedly connected to the interior of the electric heating box (1), and the heat conducting plate (7) is a triangular plate.

7. The inert gas hardening equipment according to claim 4, characterized in that: A support rod (8) is fixedly connected to the interior of the electric heating box (1), a heat conduction leakage plate (9) is fixedly connected to the upper end of the support rod (8), and the heat conduction leakage plate (9) is fixedly installed inside the electric heating box (1).

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