Ball head quartz tube sealing connection structure

Abstract

The utility model relates to a ball head quartz tube sealing connection structure, which comprises a ball bowl, a ball head tube, a sealing ring and a stainless steel cap, the ball head part of the ball head tube is inserted into the ball bowl, the ball head part of the ball head tube is provided with a sealing ring mounting groove, the sealing ring is connected in the sealing ring mounting groove, and the stainless steel cap is arranged in the sealing ring mounting groove. The stainless steel cap and the ball bowl are connected and fixed through threads, the stainless steel cap is provided with an open hole for the ball head pipe to extend out, a sealing assembly is arranged between the stainless steel cap and the ball head pipe, and the sealing assembly comprises a rubber sleeve, a rubber mat and an arc transition connected with the rubber sleeve and the rubber mat which are integrally formed. The rubber sleeve is sleeved on the tubular part of the ball head pipe, the rubber pad is positioned between the stainless steel cover and the end surface of the ball bowl, the arc transition is positioned on the inner side of the stainless steel cover, and multiple sealing between the ball head pipe and the ball bowl can be realized through the sealing ring and the sealing assembly, so that the sealing effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum coating equipment, in particular to a ball-head quartz tube sealing connection structure. Background Art

[0002] Vacuum coating is to evaporate the coating material into gas and then transport it to the coating cavity through a pipe to adhere to the surface of the workpiece. The pipes are often connected by flanges. This connection method will cause poor sealing surface fit during connection due to the different axes of the pipes or flanges, resulting in leakage.

[0003] Application No. CN201420516456.9 discloses a universal pipe joint, including a pipe, a sealing ring, a ball head pipe, a movable flange, a bolt, a gasket, and a nut. The inner holes of the flange of the pipe and the movable flange are both designed with arc surfaces, so that they are more tightly connected with the ball head of the ball head pipe. The design of the ball head pipe allows the flange of the pipe to be tightly connected with the movable flange coaxially, while the ball head pipe can be offset in the direction of the pipeline at a certain angle. The sealing groove and the sealing ring in the pipe can achieve a sealing effect between the ball head and the pipe, fully solving the defect of the non-coaxial pipelines to be connected, and can make the pipeline reach the required certain angle, while releasing the stress generated during on-site construction. If multiple products are used in series, the angle is smaller. The sealing between the pipe 1 and the ball head pipe 3 is achieved by setting a sealing ring on the inner wall of the flange of the pipe 1. The ball head pipe is a movable part, and only one sealing ring is set, so the sealing effect is poor. Therefore, the utility model proposes a ball head quartz tube sealing connection structure. Utility Model Content

[0004] The main purpose of the utility model is to provide a ball head quartz tube sealing connection structure, which can realize multiple sealing between the ball head and the quartz tube and ensure the sealing effect.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a ball head quartz tube sealing connection, comprising a ball bowl, a ball head tube, a sealing ring and a stainless steel cap, the ball head part of the ball head tube is inserted into the ball bowl, the ball head part of the ball head tube is provided with a sealing ring mounting groove, the sealing ring is connected in the sealing ring mounting groove, the stainless steel cap and the ball bowl are fixed by a threaded connection, the stainless steel cap is provided with an opening for the ball head tube to extend out, and is characterized in that a sealing assembly is provided between the stainless steel cap and the ball head tube, the sealing assembly comprises an integrally formed rubber sleeve, a rubber pad and an arc-shaped transition connecting the rubber sleeve and the rubber pad, the rubber sleeve is sleeved on the tubular part of the ball head tube, the rubber pad is located between the stainless steel cover and the end face of the ball bowl, and the arc-shaped transition is located on the inner side of the stainless steel cover.

[0006] Preferably, a positioning column is provided on the end surface of the ball bowl, a positioning hole for the positioning column to pass through is provided on the rubber pad, an annular avoidance groove is provided on the contact surface between the stainless steel cap and the ball bowl, and the end of the positioning column extends into the annular avoidance groove.

[0007] Preferably, the aperture of the opening is larger than the outer diameter of the ball head tube portion and smaller than the inner diameter of the ball bowl.

[0008] Preferably, the sealing ring and the sealing assembly are made of high temperature resistant rubber.

[0009] The beneficial effects of the technical solution of the utility model are: multiple sealing between the ball head tube and the ball bowl can be achieved through the sealing ring and the sealing assembly to ensure the sealing effect; the arc-shaped transition forms a sealed cavity between the ball head tube and the ball bowl, and the material leaked from the sealing ring will enter the sealed cavity to prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a layout diagram of the ball head quartz tube sealing connection structure of the embodiment when it is working.

[0011] The numbers in the figure represent:

[0012] 1. Ball bowl; 2. Ball head tube; 3. Sealing ring; 4. Stainless steel cap; 5. Opening; 6. Rubber sleeve; 7. Rubber pad; 8. Arc transition; 9. Positioning column; 10. Positioning hole; 11. Avoidance groove. DETAILED DESCRIPTION

[0013] The utility model is further described in detail below in conjunction with specific embodiments.

[0014] Example:

[0015] like Figure 1As shown, a ball head quartz tube sealing connection structure of the utility model comprises a ball bowl 1 made of stainless steel, a ball head tube 2, a sealing ring 3 and a stainless steel cap 4, the ball head portion of the ball head tube 2 is inserted into the ball bowl 1, the ball head portion of the ball head tube 2 is provided with a sealing ring mounting groove, the sealing ring 3 is connected in the sealing ring mounting groove, the stainless steel cap 4 is fixed to the ball bowl 1 by threaded connection, the stainless steel cap 4 is provided with an opening 5 for the ball head tube 2 to extend out, and is characterized in that: a sealing component is provided between the stainless steel cap 4 and the ball head tube 2, the sealing component comprises an integrally formed rubber sleeve 6, a rubber pad 7 and a connecting A bowl-shaped arc transition 8 is connected to the rubber sleeve 6 and the rubber pad 7. The rubber sleeve 6 is sleeved on the tubular portion of the ball head tube 2. The rubber pad 7 is located between the end faces of the stainless steel cover and the ball bowl 1. The arc transition 8 is located on the inner side of the stainless steel cover, thereby forming an elastic sealing cavity between the ball head tube 2 and the ball bowl 1. During installation, the arc transition 8 can be squeezed to discharge the internal air as much as possible to form a negative pressure. The sealing ring 3 serves as the first seal between the ball head tube 2 and the ball bowl 1. When leakage occurs at the sealing ring 3, the leaked substance will enter the sealed cavity to prevent leakage.

[0016] A positioning column 9 is provided on the end surface of the ball bowl 1, and a positioning hole 10 for the positioning column 9 to pass through is provided on the rubber pad 7. An annular avoidance groove 11 is provided on the contact surface between the stainless steel cap 4 and the ball bowl 1, and the end of the positioning column 9 extends into the annular avoidance groove 11 to prevent the arc fixation from being twisted and deformed due to friction during the process of tightening the stainless steel cover.

[0017] The aperture of the opening 5 is larger than the outer diameter of the ball head tube 2 and smaller than the inner diameter of the ball bowl 1, so as to reserve a certain angle adjustment space for the ball head tube 2 to facilitate docking.

[0018] The sealing ring 3 and the sealing assembly are made of high temperature resistant rubber.

[0019] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A ball head quartz tube sealing connection structure, comprising a ball bowl, a ball head tube, a sealing ring and a stainless steel cap, wherein the ball head portion of the ball head tube is inserted into the ball bowl, the ball head portion of the ball head tube is provided with a sealing ring mounting groove, the sealing ring is connected in the sealing ring mounting groove, the stainless steel cap is fixed to the ball bowl by threaded connection, and the stainless steel cap is provided with an opening for the ball head tube to extend out, characterized in that: A sealing assembly is provided between the stainless steel cap and the ball head tube, and the sealing assembly includes an integrally formed rubber sleeve, a rubber pad and an arc-shaped transition connecting the rubber sleeve and the rubber pad. The rubber sleeve is sleeved on the tubular portion of the ball head tube, the rubber pad is located between the stainless steel cover and the end face of the ball bowl, and the arc-shaped transition is located on the inner side of the stainless steel cover.

2. The ball head quartz tube sealing connection structure according to claim 1, characterized in that: A positioning column is arranged on the end surface of the ball bowl, a positioning hole for the positioning column to pass through is arranged on the rubber pad, an annular avoidance groove is arranged on the contact surface between the stainless steel cap and the ball bowl, and the end of the positioning column extends into the annular avoidance groove.

3. The ball head quartz tube sealing connection structure according to claim 1, characterized in that: The aperture of the opening is larger than the outer diameter of the ball head tube portion and smaller than the inner diameter of the ball bowl.

4. The ball-end quartz tube sealing connection structure according to claim 1, characterized in that: The sealing ring and the sealing assembly are made of high temperature resistant rubber.

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