Combined device for controlling coupling valve to be connected with vacuum pipeline through compressed air

Abstract

The utility model discloses a combined device for controlling a coupling valve to be connected with a vacuum pipeline through compressed air, which comprises a connecting main body, a coupling sleeve is arranged in the connecting main body, and a compressed air control unit controls the coupling sleeve to move to realize mechanical coupling of the coupling sleeve and the vacuum pipeline. The flow direction of the compressed air is changed through the electromagnetic reversing valve, so that the compressed air in the coupling sleeve driving cavity is discharged. And under the action of elastic restoring force of the sealing rings, the coupling sleeve moves reversely to loosen pressing on the inner sealing ring and the outer sealing ring, so that sealing and mechanical coupling are relieved, and the connecting device is conveniently separated from the vacuum pipeline.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline connection technical field, concretely relates to a combination device of coupling valve connection vacuum pipeline through compressed air control. BACKGROUND

[0002] High purity, high temperature alloy is widely used in aerospace, nuclear energy, petroleum chemical industry and other fields. Its excellent oxidation resistance, corrosion resistance and high temperature strength make it become one of important materials in these fields. In order to ensure the performance of this kind of high temperature alloy, the vacuum degree of alloy solution is controlled when refining, and the combination device of coupling valve connection vacuum pipeline through compressed air control can realize the free combination of pipeline connection and improve the sealing property. INNOVATION CONTENT

[0003] In order to solve the above problems, the utility model aims at providing a combination device of coupling valve connection vacuum pipeline through compressed air control.

[0004] In order to realize the above purpose, the utility model adopts the following technical scheme: a combination device of coupling valve connection vacuum pipeline through compressed air control, including connecting main part, coupling sleeve is arranged in connecting main part, and compressed air control unit controls coupling sleeve movement to realize the mechanical coupling of coupling sleeve and vacuum pipeline.

[0005] Further, the connecting main part is a hollow structure, and the both ends are provided with connecting ports matched with the vacuum pipeline.

[0006] Further, the material of the connecting main part is high-strength, vacuum corrosion-resistant metal.

[0007] Further, the connecting port of the connecting main part includes but is not limited to internal thread.

[0008] Further, the coupling sleeve is a hollow cylindrical structure, one end of which is provided with an annular protrusion, and an inner sealing ring and an outer sealing ring are matched on the annular protrusion, and a compressed air driving structure is further connected to the coupling sleeve.

[0009] Further, the compressed air driving structure includes a telescopic thimble and a gas cylinder device connected with the telescopic thimble.

[0010] Further, the inner sealing ring and the outer sealing ring are made of high-elasticity, vacuum-resistant rubber or silicone material.

[0011] Further, the compressed air control unit comprises a compressed air source, further comprises an electromagnetic reversing valve and a pressure regulating valve, the compressed air control unit controls the electromagnetic reversing valve through an electric signal, the pressure regulating valve regulates the pressure of the compressed air, and the electromagnetic reversing valve controls the flow direction of the compressed air.

[0012] Further, the annular protrusion of the coupling sleeve compresses the inner sealing ring and the outer sealing ring to be tightly connected and sealed on the outer wall of the vacuum pipeline and the inner wall of the connecting body respectively.

[0013] Compared with the prior art, the combination device can realize automatic connection and separation of the furnace and the pipeline, good sealing, simple operation and high safety. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the specific embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0015] Figure 1 It is the connection schematic diagram of the combination structure in the utility model;

[0016] Figure 2 It is the connection schematic diagram of the compressed air control unit and the coupling sleeve in the utility model;

[0017] Figure 3 It is the structure schematic diagram of the electromagnetic reversing valve in the utility model;

[0018] Figure 4 It is the structure schematic diagram of the connecting body in the utility model;

[0019] Figure 5 It is the structure schematic diagram of the coupling sleeve in the utility model;

[0020] Figure 6 It is the top view of the coupling sleeve in the utility model;

[0021] In the drawing, 1-coupling sleeve; 2-compressed air control unit; 21-electric signal; 22-pressure regulating valve; 23-compressed air source; 24-electromagnetic valve plate; 25-gas return port; 26-gas outlet; 27-gas inlet; 28-electromagnetic reversing valve; 3-connecting body; 4-vacuum pipeline; 5-inner sealing ring; 6-outer sealing ring; 7-compressed air driving structure; A-coupling plane; B-coupling plane connecting port; C-elastic center pin; D-air cylinder device. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings and specific embodiments, but should not be understood as the scope of the utility model described subject is limited to the following examples, without departing from the above technical ideas of the utility model, all kinds of modifications, substitutions and changes made according to the ordinary technical knowledge and conventional means in the art, are included in the scope of the utility model.

[0023] In the environment of highland, high humidity, high altitude, smelting high purity high temperature alloy, to make alloy performance reach the index, the vacuum degree requirement of alloy smelting is extremely high.Therefore, a control device is needed to control the connection and separation state of the furnace and the vacuum pipeline, to ensure that the connection and separation of the furnace and the pipeline can be automated and well closed during vacuum smelting and semi-vacuum pouring process.The present scheme creatively combines a set of small tools, that is, the compressed air control electromagnetic valve 21 ejects and retracts the ejector pin c to control the closing and separation of the pipeline coupling sleeve 1, and then realizes the good sealing and automatic control of the pipeline connection under vacuum and atmospheric environment, and ensures the product quality.

[0024] The working state of the furnace cover pipeline and the vacuum pipeline during the vacuum smelting process of high purity high temperature alloy:

[0025] 1, when vacuum: furnace cover pipeline connects vacuum pipeline;

[0026] 2, when vacuum cover pouring: the furnace cover pipeline is separated from the vacuum pipeline.

[0027] The furnace cover pipeline needs to be connected with the vacuum pipeline during the vacuum smelting of the alloy, and the furnace cover pipeline and the vacuum pipeline need to be separated during the cover vacuum pouring, and this process not only ensures the complete sealing of the pipeline connection during cover, but also ensures the automatic control of the pipeline separation during pouring.Through the automatic adjustment and flow control of compressed air, the compressed air control electromagnetic valve ejects and retracts the ejector pin to control the closing and separation of the pipeline coupling valve, and then realizes the good sealing and automatic control of the pipeline connection under vacuum and atmospheric environment, ensures the vacuum degree of the alloy product, and thus improves the quality.

[0028] The present application aims to provide a combined device for controlling the coupling valve to connect the vacuum pipeline by compressed air, to solve the problems of poor sealing performance, complex connection operation and difficult disassembly and maintenance in the existing vacuum pipeline connection mode.

[0029] The combined device comprises a connection main body 3 made of high-strength, vacuum corrosion-resistant metal material and having a hollow structure.The connection main body 3 is provided with a coupling flat surface connection port B adapted to the vacuum pipeline 4, and an inner thread or other quick connection structure is arranged at the port to facilitate connection with the vacuum pipeline 4.The connection main body 3 is internally provided with a cavity for accommodating the coupling sealing assembly and the compressed air driving structure 7.

[0030] The compressed air control unit 2 includes a compressed air source 23, an electromagnetic reversing valve 28 and a pressure regulating valve 22. The compressed air control unit 2 controls the electromagnetic reversing valve 28 through an electrical signal 21, the pressure regulating valve 22 adjusts the pressure of the compressed air, and the electromagnetic reversing valve 28 controls the flow direction of the compressed air. The compressed air source 23 provides a power source, and the pressure regulating valve 22 is used to adjust the pressure of the compressed air to adapt to different connection and sealing requirements. The electromagnetic reversing valve 28 controls the flow direction of the compressed air through a control circuit, and the connecting pipeline is responsible for delivering compressed air to various required parts. The electromagnetic reversing valve 28 is provided with an air inlet 27 connected with the compressed air source 23, an upper part is provided with an air outlet 26 and a return air port 25 connected with the coupling sleeve 1 to form a loop, and an electromagnetic valve plate 24 is also provided. The compressed air driving structure 7 includes a telescopic thimble c and a cylinder device d.

[0031] The coupling sealing assembly is composed of an inner sealing ring 5, an outer sealing ring 6 and a coupling sleeve 1. The inner sealing ring 5 and the outer sealing ring 6 are made of high-elasticity, vacuum-resistant rubber or silicone material, have good sealing performance and anti-aging performance, and are arranged at the coupling plane A end of the coupling sleeve 1. The coupling sleeve 1 is a hollow cylindrical structure and can move axially in the cavity of the connecting body. One end of the coupling sleeve 1 is provided with an annular protrusion for pressing the inner sealing ring 5 and the outer sealing ring 6, and the other end is connected with the compressed air driving structure and moves axially under the action of compressed air.

[0032] Working principle: when the vacuum pipeline 4 needs to be connected, the connecting device is initially connected with the vacuum pipeline 4 to be connected. The compressed air 23 enters the driving cavity of the coupling sleeve 1 through the electromagnetic reversing valve 28, and pushes the coupling sleeve 1 to move axially. The annular protrusion of the coupling sleeve 1 gradually presses the inner sealing ring 5 and the outer sealing ring 6, so that they are tightly attached to the outer wall of the vacuum pipeline 4 and the inner wall of the connecting body 3 respectively, forming a reliable seal and realizing the mechanical coupling of the connecting body 3 and the vacuum pipeline 4. When the vacuum pipeline 4 needs to be separated, the flow direction of the compressed air is changed through the electromagnetic reversing valve 28, so that the compressed air in the driving cavity of the coupling sleeve 1 is discharged. Under the elastic restoring force of the sealing ring, the coupling sleeve 1 moves reversely, loosens the pressing of the inner sealing ring and the outer sealing ring, so as to release the seal and the mechanical coupling, and facilitate the separation of the connecting device and the vacuum pipeline 4.

[0033] The above provides a detailed description of the combined device for connecting a vacuum pipeline via a compressed air-controlled coupling valve, as provided by this utility model. Specific examples have been used to illustrate the structure and working principle of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A combination device for connecting vacuum piping by means of a compressed air controlled coupling valve, characterized in that: The connecting body (3) is internally provided with a coupling sleeve (1), and a compressed air control unit (2) controls movement of the coupling sleeve (1) to realize mechanical coupling between the coupling sleeve (1) and the vacuum pipeline (4).

2. The combination of an overcompressed air control coupled valve connecting vacuum piping according to claim 1, characterized in that: The connecting body (3) is a hollow structure and is provided with a connecting port adapted to the vacuum pipeline (4).

3. The combination of an overcompressed air control coupled valve connecting vacuum piping according to claim 2, characterized in that: The connecting body is made of metal with high strength and resistance to vacuum corrosion.

4. The combination of an overcompressed air control coupled valve connecting vacuum piping of claim 2, wherein: The connecting port of the connecting body (3) includes but is not limited to an internal thread.

5. The combination of an overcompressed air control coupled valve connecting vacuum piping apparatus of claim 1 wherein: The coupling sleeve (1) is a hollow cylindrical structure, one end of which is provided with an annular protrusion, and the annular protrusion is fitted with an inner sealing ring (5) and an outer sealing ring (6), and the coupling sleeve (1) is further connected with a compressed air driving structure (7).

6. The combination of an overcompressed air control coupled valve connecting vacuum piping apparatus of claim 5, wherein: The compressed air driving structure (7) includes a retractable thimble (c) and an air cylinder device (d) connected with the retractable thimble (c).

7. The combination of an overcompressed air control coupled valve connecting vacuum piping apparatus of claim 5, wherein: The inner sealing ring (5) and the outer sealing ring (6) are made of high-elasticity, vacuum-resistant rubber or silicone material.

8. The combination of claim 1, wherein: The compressed air control unit (2) includes a compressed air source (23), further includes an electromagnetic reversing valve (28) and a pressure regulating valve (22), the compressed air control unit (2) controls the electromagnetic reversing valve (28) through an electric signal (21), the pressure regulating valve (22) adjusts the pressure of the compressed air, and the electromagnetic reversing valve (28) controls the flow direction of the compressed air.

9. The combination of claim 1, wherein: The annular protrusion of the coupling sleeve (1) compresses the inner sealing ring (5) and the outer sealing ring (6), so that they are tightly connected and sealed on the outer wall of the vacuum pipeline (4) and the inner wall of the connecting body (3), respectively.

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