Vacuum degassing device for metal material

Abstract

The utility model provides a metal material vacuum degassing device which comprises a machine frame, a vacuum assembly is installed on the machine frame, the vacuum assembly comprises an adapter, a vacuum rotating connector, a vacuum clamp and a first servo motor, and a locking buckle used for clamping a test tube is installed at the lower end of the adapter. The rotating end of the vacuum rotating joint is connected with the adapter through the vacuum hoop, and the fixed end of the vacuum rotating joint is fixedly connected with the rack; a synchronous belt wheel is fixedly embedded in the rotating end of the vacuum rotating joint; the fixed end of the vacuum rotary connector is further connected with a vacuum four-way pipe fitting, the left end and the right end of the vacuum four-way pipe fitting are each connected with a first vacuum two-way valve, the other end of each first vacuum two-way valve is connected with a vacuum elbow, and the tail end of each vacuum elbow is connected with a vacuum corrugated pipe to provide installation and debugging allowance. Wherein the tail end of one vacuum corrugated pipe is connected with a mechanical pump, and the tail end of the other vacuum corrugated pipe is connected with a molecular pump.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal material processing, and particularly relates to a metal material vacuum degassing device. BACKGROUND

[0002] The metal material vacuum degassing device is mainly used for processing various metal samples under vacuum conditions to avoid the influence of external air and pollutants on the samples, so that the surface cleanliness and the reliability of detection results are ensured. In the field of metal material processing, the surface cleanliness of samples has a crucial influence on the detection results of trace or trace impurity elements. The pollution sources mainly include impurities introduced in the sample preparation process and gas molecules adsorbed on the sample surface in the sample storage process.

[0003] In the preparation process, the use of turning coolant and the sample surface oxidation phenomenon will lead to the introduction of impurities, thereby affecting the purity of the sample. In the sample storage stage, oxygen, carbon dioxide and moisture in the air will be adsorbed on the sample surface due to the existence of van der Waals force. These adsorbed gas not only causes interference to the detection results of gas elements, but also may affect the mechanical properties of parts made of samples. Therefore, in order to reduce the interference of surface pollution, the sample pretreatment usually adopts the methods of removing oil stains by acetone ultrasonic cleaning and removing the oxidation layer by file polishing. However, these traditional methods cannot effectively remove the gas molecules adsorbed on the sample surface, affecting the detection accuracy and material performance.

[0004] The metal material vacuum degassing device can greatly reduce surface pollution by deeply cleaning the sample surface, ensure the detection accuracy and improve the material performance stability. However, the existing vacuum degassing treatment technology has not realized automation, and the whole operation process needs 1-2 workers to continuously perform according to the operation specification. This not only consumes a large amount of human resources, but also leads to low production efficiency, and it is difficult to meet the efficient and accurate modern production demand.

[0005] In summary, how to design an efficient and automatic metal material vacuum degassing device to solve the problems of low efficiency and limited precision of traditional manual operation has become a technical problem to be solved. CONTENT OF THE INVENTION

[0006] In order to overcome a series of defects existing in the prior art, the utility model discloses a metal material vacuum degassing device, including frame, the frame is installed with vacuum assembly, the vacuum assembly includes adapter 4, vacuum rotary joint 5, vacuum clamp 6 and first servo motor 9, the lower end of adapter 4 is installed for the locking buckle 2 of clamping test tube 1, the adapter 4 is set in the below of vacuum rotary joint 5, the rotary end of vacuum rotary joint 5 is connected with adapter 4 through vacuum clamp 6, and the fixed end of vacuum rotary joint 5 is connected with frame and is fixed, the rotary end of vacuum rotary joint 5 is fixed and is embedded with a synchronous pulley 7, and the synchronous pulley 7 is formed transmission connection through synchronous belt 8 with first servo motor 9, the fixed end of vacuum rotary joint 5 is also connected with a vacuum four-way pipe fitting 10, and the left and right two ends of vacuum four-way pipe fitting 10 are connected with a first vacuum two-way valve 11 respectively, one end of first vacuum two-way valve 11 is connected with a vacuum elbow 12, and the tail end of vacuum elbow 12 is connected with a vacuum bellow 13 to provide installation debugging allowance, and the tail end of one vacuum bellow 13 is connected with a mechanical pump, and the tail end of another vacuum bellow 13 is connected with a molecular pump.

[0007] Further, the locking buckle 2 is provided with two graphite sealing rings 3, the upper end of the vacuum four-way pipe fitting 10 is connected with a vacuum three-way pipe fitting 14, one end of the vacuum three-way pipe fitting 14 is connected with a vacuum gauge 15, the other end of the vacuum three-way pipe fitting 14 is connected with a second vacuum two-way valve, the other end of the second vacuum two-way valve is connected with a variable diameter pipe fitting 16 to reduce the diameter of the pipeline, and the tail end of the variable diameter pipe fitting 16 is connected with the atmosphere.

[0008] Further, the frame is also provided with an electrical control assembly, the electrical control assembly includes a PLC control unit 17, a flame nozzle 25, a first needle valve 18, an ignition needle 24 and a pulse igniter 23, wherein the flame nozzle 25 is connected to the output end of the first needle valve 18 through a pipeline, the input end of the first needle valve 18 is connected with a three-way pipe fitting 19, the other two ends of the three-way pipe fitting 19 are respectively connected with a backfire prevention valve 20, the backfire prevention valve 20 is connected with a second needle valve 21, the second needle valve 21 is connected with a two-way valve 22, the rear end of the ignition needle 24 is connected with the pulse igniter 23, and the two-way valve 22 and the pulse igniter 23 are electrically connected with the PLC control unit 17.

[0009] Further, the rack is also provided with a heating assembly, the heating assembly comprises a second servo motor 26, a gear 28, a rack 29, a connecting rod 30 and a lifting platform 31, the second servo motor 26 is fixedly arranged on the rack, a linear reducer 27 is connected to the front end of the second servo motor 26, the front end of the linear reducer 27 transmits power to the rack 29 through the gear 28; the rear end of the rack 29 is directly connected with the lifting platform 31 through the connecting rod 30, two optical shafts 32 are fixedly arranged on the two sides of the lifting platform 31, the optical shafts 32 realize overall lifting through the shaft sleeves 33 on the rack; a copper base 34 is connected to the lifting platform 31, a heat insulation layer 35 is arranged between the copper base 34 and the lifting platform 31, two heating rods 36 for providing heat source and a temperature sensor 37 are arranged behind the copper base 34.

[0010] Compared with the prior art, the metal material vacuum degassing device has the following beneficial effects:

[0011] The metal material vacuum degassing device has the advantages that the vacuum rotary joint, the synchronous belt drive, the precise vacuum pipeline system and the automatic electrical control are combined, the efficient and accurate metal material vacuum degassing and heat treatment process are realized, and the efficiency and precision of the test tube sealing and sample processing are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole structure schematic view of a metal material vacuum degassing device;

[0013] Figure 2 It is a structure schematic view of a locking buckle clamping test tube in a metal material vacuum degassing device;

[0014] Figure 3 It is a sectional view of an adapter and a locking buckle in a metal material vacuum degassing device;

[0015] Figure 4 It is a structure schematic view of a vacuum assembly in a metal material vacuum degassing device;

[0016] Figure 5 It is a structure schematic view of a vacuum assembly in a metal material vacuum degassing device;

[0017] Figure 6 It is a structure schematic view of an electrical control assembly in a metal material vacuum degassing device;

[0018] Figure 7 It is a structure schematic view of an electrical control assembly in a metal material vacuum degassing device;

[0019] Figure 8 It is a structure schematic view of a heating assembly in a metal material vacuum degassing device.

[0020] Fig.:

[0021] 1-tube; 2-locking buckle; 3-graphite sealing ring; 4-adapter; 5-vacuum rotary joint; 6-vacuum clamp; 7-synchronous pulley; 8-synchronous belt; 9-first servo motor; 10-vacuum four-way pipe fitting; 11-first vacuum two-way valve; 12-vacuum elbow; 13-vacuum bellows; 14-vacuum tee pipe fitting; 15-vacuum gauge; 16-variable diameter pipe fitting; 17-PLC control unit; 18-first needle valve; 19-tee pipe fitting; 20-anti-backfire valve; 21-second needle valve; 22-two-way valve; 23-pulse igniter; 24-ignition needle; 25-flame nozzle; 26-second servo motor; 27-linear reducer; 28-gear; 29-rack; 30-connecting rod; 31-lifting platform; 32-optical axis; 33-bush; 34-copper base; 35-heat insulation layer; 36-heating rod; 37-temperature sensor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some of the embodiments of the present application, not all of the embodiments.

[0023] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0024] The embodiments described below with reference to the drawings and the directional words are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0025] In one broad embodiment of the utility model, a kind of metal material vacuum degassing device, including rack, vacuum component is installed on the rack, the vacuum component includes adapter 4, vacuum rotary joint 5, vacuum clamp 6 and first servo motor 9, the lower end of the adapter 4 is equipped with locking buckle 2 for clamping test tube 1, the adapter 4 is arranged below the vacuum rotary joint 5, the rotating end of the vacuum rotary joint 5 is connected with adapter 4 by vacuum clamp 6, and the fixed end of the vacuum rotary joint 5 is connected with rack and fixed;The rotating end of the vacuum rotary joint 5 is fixedly embedded with a synchronous pulley 7, and the synchronous pulley 7 is connected with the first servo motor 9 by synchronous belt 8 to form transmission connection;The fixed end of the vacuum rotary joint 5 is also connected with a vacuum four-way pipe fitting 10, and the left and right ends of the vacuum four-way pipe fitting 10 are respectively connected with a first vacuum two-way valve 11, and the other end of the first vacuum two-way valve 11 is connected with a vacuum elbow 12, and the distal end of the vacuum elbow 12 is connected with a vacuum bellow 13 to provide installation debugging allowance, and the distal end of one of the vacuum bellow 13 is connected with a mechanical pump, and the distal end of the other vacuum bellow 13 is connected with a molecular pump.

[0026] Further, two graphite sealing rings 3 are arranged in the locking buckle 2;Vacuum tee pipe fitting 14 is connected to the upper end of the vacuum four-way pipe fitting 10, one end of the vacuum tee pipe fitting 14 is connected with a vacuum gauge 15, the other end of the vacuum tee pipe fitting 14 is connected with a second vacuum two-way valve, the other end of the second vacuum two-way valve is connected with a variable diameter pipe fitting 16 to reduce the diameter of the pipeline, and the distal end of the variable diameter pipe fitting 16 is connected to the atmosphere.

[0027] Further, electrical control assembly is also installed on the rack, and the electrical control assembly includes PLC control unit 17, flame nozzle 25, first needle valve 18, ignition needle 24 and pulse igniter 23, wherein the flame nozzle 25 is connected to the output end of the first needle valve 18 by pipeline, the input end of the first needle valve 18 is connected with a three-way pipe fitting 19, the other two ends of the three-way pipe fitting 19 are respectively connected with a backfire prevention valve 20, the backfire prevention valve 20 is connected with a second needle valve 21, the second needle valve 21 is connected with a two-way valve 22, and the rear end of the ignition needle 24 is connected with the pulse igniter 23;The two-way valve 22 and the pulse igniter 23 are electrically connected with the PLC control unit 17.

[0028] Further, the rack is also provided with a heating assembly, the heating assembly comprises a second servo motor 26, a gear 28, a rack 29, a connecting rod 30 and a lifting platform 31, the second servo motor 26 is fixedly arranged on the rack, a linear reducer 27 is connected to the front end of the second servo motor 26, the front end of the linear reducer 27 transmits power to the rack 29 through the gear 28; the rear end of the rack 29 is directly connected with the lifting platform 31 through the connecting rod 30, two optical shafts 32 are fixedly arranged on the two sides of the lifting platform 31, the optical shafts 32 are lifted as a whole through the shaft sleeves 33 on the rack; a copper base 34 is connected to the lifting platform 31, a heat insulation layer 35 is arranged between the copper base 34 and the lifting platform 31, two heating rods 36 for providing heat source and a temperature sensor 37 are arranged behind the copper base 34.

[0029] The preferred embodiments of the utility model will be further described in detail below in combination with the drawings.

[0030] The test tube 1 needs to be manually installed in the locking buckle 2, the locking buckle 2 is provided with two graphite sealing rings 3, the test tube 1 is inserted into the channel of the adapter 4, and the locking buckle 2 is locked, since the graphite sealing rings 3 are extruded, the test tube 1 is extruded and locked in the adapter 4.

[0031] The upper end of the adapter 4 is connected with a vacuum rotary joint 5, the fixed end of the vacuum rotary joint 5 is connected with the rack, the rotary end of the vacuum rotary joint 5 is connected with each other through a vacuum clamp 6, the rotary end of the vacuum rotary joint 5 is embedded in a synchronous pulley 7, the synchronous pulley 7 is fixedly connected with the rotary end of the vacuum rotary joint 5, and the output shaft of a first servo motor 9 is connected through a synchronous belt 8, when the output shaft of the first servo motor 9 rotates, the synchronous belt 8 is used to transmit power to drive the test tube 1 at the tail end to rotate.

[0032] The fixed end of the vacuum rotary joint 5 is a whole part of a vacuum pipeline, the whole pipeline is composed of a mechanical pump and a molecular pump to form a vacuum assembly, and is connected to each single machine through a pipeline. The center of the vacuum pipeline is a vacuum four-way pipe fitting 10, the lower end of the vacuum four-way pipe fitting 10 is connected with the fixed end of the vacuum rotary joint 5, the left and right ends of the vacuum four-way pipe fitting 10 are respectively connected with a first vacuum two-way valve 11, the other end of the first vacuum two-way valve 11 is connected with a vacuum elbow 12, and the tail end of the vacuum elbow 12 is connected with a vacuum bellows 13 to provide installation and debugging allowance, one end of one of the vacuum bellows 13 is connected with the mechanical pump, and the other vacuum bellows 13 is connected with the molecular pump. The upper end of the vacuum four-way pipe fitting 10 is connected with a vacuum three-way pipe fitting 14, one end of the vacuum three-way pipe fitting 14 is connected with a vacuum gauge 15 as a vacuum degree monitoring device, and the other end of the vacuum three-way pipe fitting 14 is connected with a second vacuum two-way valve, one end of the second vacuum two-way valve is connected with a variable diameter pipe fitting 16 to reduce the diameter of the pipeline, and the tail end of the variable diameter pipe fitting 16 is connected with the atmosphere.

[0033] The device rear end is an electrical control assembly. The PLC control unit 17 is the core control unit of a single device. The first needle valve 18 controls the output flow of mixed gas. The input end of the first needle valve 18 is mixed with oxygen and propane. The two gases are mixed through a three-way pipe fitting 19. The other two ends of the three-way pipe fitting 19 are connected to two anti-backfire valves 20. The input flow of oxygen and propane is controlled through a second needle valve 21. The rear end of the second needle valve 21 is connected to two two-way valves 22 to control the on-off of the gas. The pulse igniter 23 is responsible for igniting the mixed gas. The ignition needle 24 is connected to the pulse igniter 23 at the rear end. The flame nozzle 25 is connected to the first needle valve 18 at the rear end through a pipeline.

[0034] After removing the heating seat overall shell, the internal structure is a fixed second servo motor 26 front end linear reducer 27. The front end of the linear reducer 27 transmits power to the rack 29 through the gear 28 to make the rack 29 move up and down. The connecting rod 30 at the rear end of the rack 29 is directly connected to the lifting platform 31. Two optical shafts 32 are fixed on both sides of the lifting platform 31. The optical shafts 32 realize overall lifting through the shaft sleeve 33 on the rack. The copper base 34 is connected to the lifting platform 31. A layer of heat insulation layer 35 is added between the copper base 34 and the lifting platform 31 to prevent a large amount of heat from being introduced into the rack. The copper base 34 has two heating rods 36 at the rear end to provide heat sources and a temperature sensor 37.

[0035] The overall use process of the single machine is as follows.

[0036] Put the sample into the test tube 1 and install it on the adapter 4. One vacuum bellows 13 is connected to the mechanical pump and the other 13 bellows is connected to the molecular pump. Turn off the second vacuum two-way valve connected to the atmosphere through the PLC control unit 17 and start the mechanical pump to exhaust the overall vacuum chamber. At this time, the copper base 34 located below the test tube 1 will rise to the lower end of the test tube 1 to provide heating for the test tube 1 to quickly perform vacuum exhaust. When the vacuum gauge 15 monitors that the vacuum degree reaches below 10 Pa, turn on the molecular pump through the PLC control unit 17 until the vacuum gauge 15 feedback reaches 10 -3 Pa. Turn off all two-way valves through the PLC control unit 17, open two two-way valves 22 to input gas, and ignite the mixed gas output by the flame nozzle 25 to heat the test tube 1 through the control of the pulse igniter 23. At the same time, control the first servo motor 9 to make the test tube 1 rotate through the PLC control unit 17. When the test tube 1 is heated to a certain degree, the heated part of the test tube 1 will soften and be elongated due to the influence of gravity. When the test tube 1 contacts the bottom of the copper base 34, the upper part of the test tube 1 is still rotating, which causes the flame melting position to be inwardly recessed to leave the flame baking, thereby completing the sealing. After the sealing is completed, the copper base 34 returns to the default position, and the two-way valve 11 connected to the atmosphere is opened, so that the test tube 1 can be taken out.

[0037] When multiple single devices are connected in parallel, the basic operation process is consistent, and the PLC control unit 17 of each device will communicate to confirm whether the molecular pump can intervene in the work to prevent the molecular pump from being impacted. When multiple devices are connected in parallel, one of the vacuum bellows 13 of each device needs to be connected in parallel to the mechanical pump, and the other vacuum bellows 13 needs to be connected in parallel to the molecular pump.

[0038] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A metal material vacuum degassing apparatus comprising a frame, characterized by, The rack is provided with a vacuum assembly, which comprises an adapter (4), a vacuum rotary joint (5), a vacuum clamp (6) and a first servo motor (9), the lower end of the adapter (4) is provided with a locking buckle (2) for clamping a test tube (1), the adapter (4) is arranged below the vacuum rotary joint (5), the rotating end of the vacuum rotary joint (5) is connected with the adapter (4) through the vacuum clamp (6), and the fixed end of the vacuum rotary joint (5) is connected with the rack; the rotating end of the vacuum rotary joint (5) is fixedly embedded with a synchronous pulley (7), the synchronous pulley (7) is in transmission connection with the first servo motor (9) through a synchronous belt (8); the fixed end of the vacuum rotary joint (5) is further connected with a vacuum four-way pipe fitting (10), the left and right ends of the vacuum four-way pipe fitting (10) are respectively connected with a first vacuum two-way valve (11), the other end of the first vacuum two-way valve (11) is connected with a vacuum elbow (12), and the tail end of the vacuum elbow (12) is connected with a vacuum bellows (13) to provide installation and debugging allowance, the tail end of one of the vacuum bellows (13) is connected with a mechanical pump, and the tail end of the other vacuum bellows (13) is connected with a molecular pump.

2. The metal material vacuum degassing apparatus according to claim 1, wherein Two graphite sealing rings (3) are arranged in the locking buckle (2); the upper end of the vacuum four-way pipe fitting (10) is connected with a vacuum three-way pipe fitting (14), one end of the vacuum three-way pipe fitting (14) is connected with a vacuum gauge (15), the other end of the vacuum three-way pipe fitting (14) is connected with a second vacuum two-way valve, the other end of the second vacuum two-way valve is connected with a variable-diameter pipe fitting (16) to reduce the diameter of the pipeline, and the tail end of the variable-diameter pipe fitting (16) is connected with the atmosphere.

3. The metal material vacuum degassing apparatus according to claim 2, wherein The rack is further provided with an electrical control assembly, which comprises a PLC control unit (17), a flame nozzle (25), a first needle valve (18), an ignition needle (24) and a pulse igniter (23), wherein the flame nozzle (25) is connected to the output end of the first needle valve (18) through a pipeline, the input end of the first needle valve (18) is connected with a three-way pipe fitting (19), the other two ends of the three-way pipe fitting (19) are respectively connected with an anti-backfire valve (20), the anti-backfire valve (20) is connected with a second needle valve (21), the second needle valve (21) is connected with a two-way valve (22), the rear end of the ignition needle (24) is connected with the pulse igniter (23); the two-way valve (22) and the pulse igniter (23) are in electrical connection with the PLC control unit (17).

4. The metal material vacuum degassing apparatus according to claim 3, wherein The rack is also provided with a heating assembly, which comprises a second servo motor (26), a gear (28), a rack (29), a connecting rod (30) and a lifting platform (31), the second servo motor (26) is fixedly arranged on the rack, the front end of the second servo motor (26) is connected with a linear speed reducer (27), the front end of the linear speed reducer (27) transmits power to the rack (29) through the gear (28); the rear end of the rack (29) is directly connected with the lifting platform (31) through the connecting rod (30), the two sides of the lifting platform (31) are respectively fixed with an optical axis (32), the optical axis (32) realizes overall lifting through the shaft sleeve (33) on the rack; the lifting platform (31) is connected with a copper base (34), a heat insulation layer (35) is arranged between the copper base (34) and the lifting platform (31), the copper base (34) is provided with two heating rods (36) and a temperature sensor (37) for providing heat source.

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