Nitriding furnace for titanium metal surface nitrogen-controlled ion permeation treatment

Abstract

The utility model relates to the technical field of nitriding furnaces, in particular to a nitriding furnace for titanium metal surface nitrogen ion permeation control treatment, which comprises a vacuum pump and an exhaust pipe, the vacuum pump is connected with a hollow pipe, and the exhaust pipe is connected with the hollow pipe through a first connecting mechanism or a second connecting mechanism during vacuumizing. The first connecting mechanism comprises an air cylinder fixedly installed outside the vacuum pump, and the output end of the air cylinder is fixedly connected with a rack. When the exhaust pipe and the hollow pipe are hoses, the exhaust pipe is inserted into the hollow pipe, and then the air cylinder drives the rack to extend out; when the rack extends out, the hollow gear is driven to rotate, when the hollow gear rotates, the arc-shaped grooves press the pressing rods, then the first springs are compressed, the four pressing rods extend out to compress one end of the hollow pipe, then the connecting position of the exhaust pipe and the hollow pipe is compressed, connection is completed, and the exhaust pipe can be effectively prevented from falling off at the connecting position.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to a nitriding furnace for controlled nitrogen ion penetration treatment on the surface of titanium metal. Background Art

[0002] The ion nitriding furnace is to place the workpiece to be processed in a vacuum container and perform nitriding under glow discharge conditions. The workpiece is placed in the furnace as the cathode, and the furnace body is used as the anode. Nitrogen is then introduced, and a certain voltage is applied between the two electrodes to ionize the nitrogen. After the nitrogen is ionized, it impacts the workpiece at a high speed. The kinetic energy of the ions is converted into heat energy to heat the workpiece to the nitriding temperature. Part of the nitrogen that bombards the surface of the workpiece seizes electrons and directly penetrates into the surface of the workpiece.

[0003] The comparative document with application number CN215517600U is cited as the prior art. When in use, the furnace body is lifted by a synchronous electric push rod, and then the metal workpiece to be nitrided is placed on the cathode support plate, and then the synchronous electric push rod is shortened, so that the furnace body covers the seat plate, and the bottom of the furnace body is placed in the installation frame, and then the vacuum pump is connected to the exhaust pipe to evacuate the furnace body. The prior art has the following disadvantages: the document does not explain how the vacuum pump and the exhaust pipe are connected. For people in this field, it is easy to think of plug-in connection, but direct insertion has poor firmness and is easy to fall off during use. The utility model improves the connection method between the vacuum pump and the exhaust pipe in the prior art. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nitriding furnace for controlled nitrogen ion penetration treatment on the surface of titanium metal, comprising: a vacuum pump and an exhaust pipe, the vacuum pump is connected to a hollow tube, and when evacuating the vacuum, the exhaust pipe and the hollow tube need to be connected through a first connecting mechanism or a second connecting mechanism, the first connecting mechanism comprises a cylinder fixedly installed outside the vacuum pump, the output end of the cylinder is fixedly connected to a rack, the outside of the vacuum pump is rotatably connected to a hollow gear, and the hollow gear is located outside the hollow tube, an arc groove is provided on the inner side of the hollow gear, and a hollow disc is fixedly provided outside the vacuum pump, and the hollow disc is located between the hollow tube and the hollow gear.

[0006] Preferably, the hollow disc is provided with four grooves and is slidably connected with a pressure rod, a first spring is fixedly provided inside the groove, an extension rod is fixedly provided outside the pressure rod, the extension rod is located inside the groove and is fixedly connected with the first spring.

[0007] Preferably, the second connection mechanism includes a circle of slots arranged around the outside of the exhaust pipe.

[0008] Preferably, a spherical ball is elastically connected to the outside of the hollow tube, a sliding sleeve is slidably connected to the outside of the hollow tube, a second spring is arranged on the outside of the hollow tube, and the second spring is located inside the sliding sleeve, and the hollow tube includes a pressing area and a cavity.

[0009] Preferably, the first connecting mechanism can be used when the exhaust pipe and the hollow pipe are hoses.

[0010] Preferably, the second connecting mechanism is suitable for the case where the exhaust pipe and the hollow pipe are hard pipes.

[0011] The utility model provides the following beneficial effects:

[0012] 1. When the exhaust pipe and the hollow pipe are soft tubes, insert the exhaust pipe into the hollow pipe, and then the cylinder drives the rack to extend. Since the rack is meshed with the hollow gear, the rack will drive the hollow gear to rotate when it extends. When the hollow gear rotates, the arc groove presses the pressure rod, and then the first spring is compressed. Then the four pressure rods extend to compress one end of the hollow pipe, and then the connection between the exhaust pipe and the hollow pipe is tightened to complete the connection. This can effectively prevent it from falling off at the connection.

[0013] 2. When the exhaust pipe and the hollow tube are hard tubes, the second spring is compressed when the sliding sleeve is pulled, and then the pressing area leaves the position of the ball. At this time, the pressing effect of the pressing area on the ball disappears, and then the ball will extend into the interior of the cavity. At this time, the exhaust pipe is inserted into the interior of the hollow tube, and then the slot will move to the position of the ball. At this time, the sliding sleeve is released, and the pressing area presses the ball again under the resetting action of the second spring, and then the ball enters the interior of the slot, which is conducive to completing the connection between the exhaust pipe and the hollow tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the external structure of the vacuum pump proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the first connecting mechanism proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the hollow gear structure proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the hollow disc structure proposed by the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of location A proposed by the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the second connecting mechanism proposed by the utility model;

[0020] Figure 7 This is a schematic diagram of the structure of point B proposed by the utility model.

[0021] In the figure: 1. vacuum pump; 2. exhaust pipe; 3. hollow pipe; 4. cylinder; 5. rack; 6. hollow gear; 7. arc groove; 8. hollow disc; 9. groove; 10. pressure rod; 11. first spring; 12. extension rod; 13. slot; 14. ball; 15. sleeve; 16. second spring; 17. pressing area; 18. cavity. DETAILED DESCRIPTION

[0022] 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.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of its embodiments based on the overall structure of the present utility model.

[0024] Example 1

[0025] A nitriding furnace for controlled nitrogen ion penetration treatment on titanium metal surface, comprising: a vacuum pump 1, an exhaust pipe 2, the vacuum pump 1 is connected to a hollow tube 3, when evacuating, the exhaust pipe 2 needs to be connected to the hollow tube 3 through a first connecting mechanism or a second connecting mechanism, the first connecting mechanism comprises a cylinder 4 fixedly installed outside the vacuum pump 1, the output end of the cylinder 4 is fixedly connected to a rack 5, the outside of the vacuum pump 1 is rotatably connected to a hollow gear 6, and the hollow gear 6 is located outside the hollow tube 3, the inner portion of the hollow gear 6 is connected to the hollow tube 3, and the hollow gear 6 is located outside the hollow tube 3. An arc groove 7 is provided on the side, a hollow disc 8 is fixedly provided on the outside of the vacuum pump 1, the hollow disc 8 is located between the hollow tube 3 and the hollow gear 6, the hollow disc 8 is provided with four grooves 9 and is slidably connected with a pressure rod 10, a first spring 11 is fixedly provided inside the groove 9, an extension rod 12 is fixedly provided outside the pressure rod 10, the extension rod 12 is located inside the groove 9 and is fixedly connected to the first spring 11, the first connecting mechanism can be used when the exhaust pipe 2 and the hollow tube 3 are hoses,

[0026] In this embodiment: when the exhaust pipe 2 and the hollow tube 3 are soft tubes, the exhaust pipe 2 is inserted into the interior of the hollow tube 3, and then the cylinder 4 drives the rack 5 to extend. Since the rack 5 is meshed with the hollow gear 6, the rack 5 will drive the hollow gear 6 to rotate when it is extended. When the hollow gear 6 rotates, the arc groove 7 presses the pressure rod 10, and then the first spring 11 is compressed. After that, the four pressure rods 10 extend to compress one end of the hollow tube 3, and then the connection between the exhaust pipe 2 and the hollow tube 3 is tightened to complete the connection, which can effectively prevent it from falling off at the connection.

[0027] Example 2

[0028] The second connection mechanism includes a groove 13 arranged on the outside of the exhaust pipe 2, a ball 14 elastically connected to the outside of the hollow pipe 3, a sleeve 15 slidably connected to the outside of the hollow pipe 3, a second spring 16 arranged on the outside of the hollow pipe 3, and the second spring 16 is located inside the sleeve 15, the hollow pipe 3 includes a pressing area 17 and a cavity 18, and the second connection mechanism is suitable for the case where the exhaust pipe 2 and the hollow pipe 3 are hard pipes.

[0029] In this embodiment: when the exhaust pipe 2 and the hollow tube 3 are hard tubes, the second spring 16 is compressed when the sliding sleeve 15 is pulled, and then the pressing area 17 leaves the position of the ball 14. At this time, the pressing effect of the pressing area 17 on the ball 14 disappears, and then the ball 14 extends into the interior of the cavity 18. At this time, the exhaust pipe 2 is inserted into the interior of the hollow tube 3, and then the groove 13 moves to the position of the ball 14. At this time, the sliding sleeve 15 is released, and the pressing area 17 presses the ball 14 again under the resetting action of the second spring 16, and then the ball 14 enters the interior of the groove 13, which is conducive to completing the connection between the exhaust pipe 2 and the hollow tube 3.

[0030] Embodiment 1 and embodiment 2 are two connection modes and do not affect each other. You can choose one of them according to your needs.

[0031] Working principle: when in use, the furnace body is lifted by the synchronous electric push rod, and then the metal workpiece to be nitrided is placed on the cathode support plate, and then the synchronous electric push rod is shortened, so that the furnace body covers the seat plate, and the bottom of the furnace body is placed in the installation frame, and then the vacuum pump is connected to the exhaust pipe to evacuate the furnace body. After the vacuum is completed, the cover body is closed, and then the valve is opened to allow the nitrogen in the high-pressure nitrogen bottle to enter the second cavity through the gas supply pipe and the second connecting pipe, and the nitrogen in the second cavity enters the furnace body through the air outlet, and then the pulse DC power supply is respectively connected to the cathode connection plate and the anode connection frame through the first wire and the second wire. Negative and positive voltages are applied to the cathode support plate and the anode connection frame through the first wire and the second wire. At this time, under the action of the metal short-circuit column, the cathode support plate is connected to the negative voltage. At the same time, when the furnace body is installed, the conductive column is inserted into the connection tube, and a positive voltage is applied to the anode metal tube, so that the nitrogen is ionized under the action of the voltage difference between the anode metal tube and the cathode support plate, and then the nitriding work starts. The above is a working description of the nitriding furnace in the prior art.

[0032] When the exhaust pipe 2 and the hollow pipe 3 are soft tubes, the exhaust pipe 2 is inserted into the hollow pipe 3, and then the cylinder 4 drives the rack 5 to extend. Since the rack 5 is meshed with the hollow gear 6, the rack 5 will drive the hollow gear 6 to rotate when it extends. When the hollow gear 6 rotates, the arc groove 7 presses the pressure rod 10, and then the first spring 11 is compressed. Then the four pressure rods 10 extend to compress one end of the hollow pipe 3, and then the connection between the exhaust pipe 2 and the hollow pipe 3 is tightened to complete the connection. This can effectively prevent falling off at the connection.

[0033] When the exhaust pipe 2 and the hollow tube 3 are hard tubes, the second spring 16 is compressed by pulling the sliding sleeve 15, and then the pressing area 17 leaves the position of the ball 14. At this time, the pressing effect of the pressing area 17 on the ball 14 disappears, and then the ball 14 extends into the interior of the cavity 18. At this time, the exhaust pipe 2 is inserted into the interior of the hollow tube 3, and then the groove 13 moves to the position of the ball 14. At this time, the sliding sleeve 15 is released, and the pressing area 17 presses the ball 14 again under the resetting action of the second spring 16, and then the ball 14 enters the interior of the groove 13, which is conducive to completing the connection between the exhaust pipe 2 and the hollow tube 3.

[0034] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment, comprising: The vacuum pump (1) comprises a vacuum pump (1) and an exhaust pipe (2), and is characterized in that: the vacuum pump (1) is connected to a hollow pipe (3), and when evacuating a vacuum, the exhaust pipe (2) needs to be connected to the hollow pipe (3) through a first connecting mechanism or a second connecting mechanism, and the first connecting mechanism comprises a cylinder (4) fixedly installed outside the vacuum pump (1), and the output end of the cylinder (4) is fixedly connected to a rack (5), and the outside of the vacuum pump (1) is rotatably connected to a hollow gear (6), and the hollow gear (6) is located outside the hollow pipe (3), and an arc groove (7) is provided on the inner side of the hollow gear (6), and a hollow disc (8) is fixedly provided outside the vacuum pump (1).

2. A nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: The hollow disc (8) is provided with four grooves (9) and is slidably connected with a pressure rod (10); a first spring (11) is fixedly provided inside the groove (9); an extension rod (12) is fixedly provided outside the pressure rod (10); the extension rod (12) is located inside the groove (9) and is fixedly connected with the first spring (11).

3. A nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: The second connection mechanism comprises a clamping groove (13) arranged around the outside of the air extraction pipe (2).

4. A nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: A sphere (14) is elastically connected to the outside of the hollow tube (3), a sliding sleeve (15) is slidably connected to the outside of the hollow tube (3), and a second spring (16) is arranged on the outside of the hollow tube (3).

5. The nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: The first connecting mechanism can be used when the air extraction pipe (2) and the hollow pipe (3) are hoses.

6. The nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: The second connecting mechanism is suitable for the case where the air extraction pipe (2) and the hollow pipe (3) are hard pipes.

7. The nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 1, characterized in that: The hollow disc (8) is located between the hollow tube (3) and the hollow gear (6).

8. The nitriding furnace for titanium metal surface controlled nitrogen ion penetration treatment according to claim 4, characterized in that: The second spring (16) is located inside the sliding sleeve (15), and the hollow tube (3) comprises a pressing area (17) and a cavity (18).

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