Flexible finger-like cylinder valve opening and closing structure

Abstract

The invention relates to a flexible finger cylinder valve opening and closing structure, which belongs to the technical field of gas cylinders and comprises a metal sleeve, the bottom of the metal sleeve is open, an airbag wall is arranged on the inner side of the metal sleeve, and the upper and lower ends of the inner wall of the metal sleeve are hermetically connected with the upper and lower ends of the airbag wall; the top surface of the metal sleeve is connected with an upper gland, the upper part of the upper gland is elastically connected with an extension rod, and the extension rod is connected with a driving device; a cylinder valve hand wheel appearance embedded type full-wrapping mode is adopted, and the effect of automatic opening and closing of the cylinder valve hand wheel is achieved; after the air bag cavity is inflated, wrapping type extrusion of a flexible surface can be formed according to different shapes of the cylinder valve hand wheel, and the contact surface of the cylinder valve hand wheel cannot be abraded in the radial direction; and certain up-and-down offset can be generated according to hand wheel lifting formed by opening and closing of the cylinder valve hand wheel, the contact face of the cylinder valve hand wheel cannot be axially abraded, the service life of the cylinder valve hand wheel is greatly prolonged, and cost is saved.

Description

Technical Field

[0001] The invention relates to a flexible finger-type bottle valve opening and closing structure, belonging to the technical field of gas cylinders. Background Art

[0002] With the development of the gas industry, gas cylinder filling technology has become increasingly mature, and automatic gas filling equipment has been put into use. From the original backward manual filling, it has developed into advanced automatic filling equipment to fill gas cylinders, which has greatly improved the efficiency of gas cylinder filling.

[0003] At present, the handwheel structure for opening and closing gas cylinder valves of automatic gas filling equipment on the market is mostly hard surface contact, or only applicable to a single specification, which can easily cause the valve handwheel to be squeezed and deformed, or wear the valve handwheel, forming burrs and rough surfaces, which affects the service life of the handwheel and increases maintenance costs. In addition, there is a safety hazard of scratches when manually opening and closing the valve handwheel. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a flexible finger-type bottle valve opening and closing structure, which can form a wrapping extrusion of the bottle valve handwheel with a flexible surface when opening and closing the bottle valve handwheel, thereby avoiding extrusion deformation or wear of the bottle valve handwheel and extending the service life of the bottle valve handwheel.

[0005] The flexible finger-type bottle valve opening and closing structure described in the present invention comprises a metal sleeve, the bottom of the metal sleeve is open, an airbag wall is arranged on the inner side of the metal sleeve, the airbag wall is made of flexible material, the upper and lower ends of the inner wall of the metal sleeve are sealedly connected to the upper and lower ends of the airbag wall, and the metal sleeve and the airbag wall together surround an expandable or contractible airbag cavity; an inflation port is also arranged on the metal sleeve, the top surface of the metal sleeve is connected to an upper pressure cover, the upper part of the upper pressure cover is elastically connected to an extension rod, and the extension rod is connected to a driving device.

[0006] The technical solution of the present invention is to provide a flexible finger-like bottle valve opening and closing structure, in which a metal sleeve and an airbag wall are used to surround an expandable or contractible airbag cavity. When the bottle valve handwheel needs to be opened and closed, gas is filled into the airbag cavity to expand the airbag cavity and wrap the bottle valve handwheel. The metal sleeve is then driven by a driving device to rotate, thereby driving the bottle valve handwheel to rotate. During this period, the up and down deviation of this structure can be achieved through the elastic connection between the upper pressure cover and the extension rod.

[0007] Preferably, the bottom of the metal sleeve is provided with an external thread A, and the metal sleeve is connected to the lower pressure cover through the external thread A; a lower pressure cover pressure ring is provided inside the lower pressure cover, and a chamfered structure is provided on the edge of the lower pressure cover pressure ring, and the lower end of the airbag wall is clamped between the lower pressure cover pressure ring and the metal sleeve.

[0008] Preferably, the upper pressure cover includes an upper pressure cover shaft and an upper pressure cover plate, and the upper pressure cover shaft is provided with an external thread B; an upper pressure cover mounting through hole is provided at the center of the top surface of the metal sleeve, and the diameter of the upper pressure cover plate is larger than the diameter of the upper pressure cover mounting through hole, and the upper pressure cover shaft passes through the upper pressure cover mounting through hole from the bottom of the metal sleeve upward, and is locked and connected with the metal sleeve through a nut; the upper end of the airbag wall is clamped between the upper pressure cover plate and the metal sleeve.

[0009] Furthermore, bolt mounting holes are provided on both sides of the upper pressure cover mounting hole of the metal sleeve, and threaded holes matching the bolt mounting holes are provided on the upper pressure cover plate. The bolts pass through the bolt mounting holes and are screwed into the threaded holes to prevent relative rotation between the metal sleeve and the upper pressure cover when they move.

[0010] Preferably, an extension rod installation groove is provided at the upper center of the upper gland shaft, the extension rod is located in the extension rod installation groove, and the extension rod is movably connected to the upper gland shaft through a pin shaft.

[0011] Furthermore, the bottom of the extension rod is threadedly connected to a screw plug, and inner holes are provided on the contact surfaces of the extension rod and the screw plug. The inner holes of the extension rod and the screw plug together surround a spring cavity, in which a spring is provided.

[0012] Furthermore, the extension rod is also provided with a long hole, a pin is movably arranged in the long hole, and the pin is pressed above the spring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The flexible finger-type bottle valve opening and closing structure described in the present invention adopts a full-wrapping mode embedded in the shape of a bottle valve handwheel, sets a certain air pressure and bottle valve opening and closing torque value, and achieves the effect of automatic opening and closing of the bottle valve handwheel; when the airbag cavity of the present invention is not inflated, bottle valve handwheels with different outer contour sizes can be easily inserted or removed, to cope with the situation where the bottle valve is not centered or the handwheel is tilted due to the crooked bottle valve within the offset range; after the airbag cavity is inflated, a wrapping extrusion of the flexible surface can be formed according to the different shapes of the bottle valve handwheel, and no radial wear is caused to the contact surface of the bottle valve handwheel; and the present invention will produce a certain up and down offset of the handwheel caused by the opening and closing of the bottle valve handwheel, and will not cause axial wear to the contact surface of the bottle valve handwheel, which greatly extends the service life of the bottle valve handwheel and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 It is a three-dimensional picture of the metal sleeve;

[0018] Figure 4is a cross-sectional view of the metal sleeve;

[0019] Figure 5 It is a three-dimensional diagram of the upper gland;

[0020] Figure 6 is a cross-sectional view of the upper gland;

[0021] Figure 7 It is a three-dimensional diagram of the lower gland;

[0022] Figure 8 It is a three-dimensional diagram of the extension rod.

[0023] In the figure: 1. bottle valve handwheel; 2. lower pressure cover; 3. metal sleeve; 4. upper pressure cover; 5. extension rod; 6. pin shaft; 7. spring; 8. screw plug; 9. nut; 10. bolt; 11. air bag wall; 12. lower pressure cover pressure ring; 13. external thread A; 14. bolt mounting through hole; 15. upper pressure cover mounting through hole; 16. inflation port; 17. upper pressure cover shaft; 18. external thread B; 19. threaded hole; 20. upper pressure cover plate; 21. extension rod mounting groove; 22. long hole. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 8 As shown, this embodiment is implemented by the following technical scheme: it includes a metal sleeve 3, the bottom of the metal sleeve 3 is open, an airbag wall 11 is arranged on the inner side of the metal sleeve 3, the airbag wall 11 is made of flexible material, the upper and lower ends of the inner wall of the metal sleeve 3 are sealed and connected with the upper and lower ends of the airbag wall 11, and the metal sleeve 3 and the airbag wall 11 together surround and form an expandable or contractible airbag cavity; an inflation port 16 is also provided on the metal sleeve 3, and the inflation port 16 is connected to the air source, the top surface of the metal sleeve 3 is connected to the upper pressure cover 4, the upper part of the upper pressure cover 4 is elastically connected to the extension rod 5, and the extension rod 5 is connected to the driving device.

[0026] In this embodiment, an external thread A13 is provided at the bottom of the metal sleeve 3, and the metal sleeve 3 is connected to the lower pressure cover 2 through the external thread A13; a lower pressure cover pressing ring 12 is provided inside the lower pressure cover 2, and the edge of the lower pressure cover pressing ring 12 is provided with a chamfered structure for easy clamping, and the lower end of the airbag wall 11 is clamped between the lower pressure cover pressing ring 12 and the metal sleeve 3.

[0027] The upper gland 4 includes an upper gland shaft 17 and an upper gland plate 20, and an external thread B18 is provided on the upper gland shaft 17; an upper gland mounting through hole 15 is provided at the center of the top surface of the metal sleeve 3, and the diameter of the upper gland plate 20 is larger than the diameter of the upper gland mounting through hole 15, and the upper gland shaft 17 passes through the upper gland mounting through hole 15 from the bottom of the metal sleeve 3 upward, and is locked and connected with the metal sleeve 3 through a nut 9; the upper end of the airbag wall 11 is clamped between the upper gland plate 20 and the metal sleeve 3. Bolt mounting through holes 14 are provided on both sides of the upper gland mounting through hole 15 of the metal sleeve 3, and a threaded hole 19 matching the bolt mounting through hole 14 is provided on the upper gland plate 20, and the bolt 10 passes through the bolt mounting through hole 14 and is screwed into the threaded hole 19 to prevent the metal sleeve 3 and the upper gland 4 from rotating relative to each other when they move.

[0028] An extension rod installation groove 21 is provided at the center of the upper part of the upper gland shaft 17, and the extension rod 5 is located in the extension rod installation groove 21 and is movably connected to the upper gland shaft 17 through the pin 6. The bottom of the extension rod 5 is threadedly connected to the screw plug 8, and there is a movable gap between the bottom of the screw plug 8 and the upper gland 4; the contact surfaces of the extension rod 5 and the screw plug 8 are both provided with inner holes, and the inner holes of the extension rod 5 and the inner holes of the screw plug 8 are surrounded together to form a spring cavity, and a spring 7 is arranged in the spring cavity. The extension rod 5 is also provided with a long hole 22, and the pin 6 is movably arranged in the long hole 22, and the pin 6 is pressed above the spring 7.

[0029] The working principle of the present invention is:

[0030] The present invention can easily insert or remove the bottle valve hand wheel 1 when the air bag cavity is not inflated;

[0031] When the bottle valve handwheel 1 needs to be opened or closed, air is inflated into the airbag cavity through the inflation port 16 to expand the airbag wall 11 inward, forming a wrapped extrusion according to the shape of the bottle valve handwheel 1, and then the driving device drives the metal sleeve 3 to rotate, thereby driving the bottle valve handwheel 1 to rotate; during the rotation process, the bottle valve handwheel 1 will produce a certain degree of rise and fall, which can drive the upper pressure cover 4 to rise and fall, and compress or extend the spring 7 to adapt to the movement of the bottle valve handwheel 1.

[0032] The present invention does not cause radial or axial wear to the bottle valve handwheel, and at the same time eliminates the lifting distance corresponding structure formed by the opening and closing of the bottle valve handwheel 1, greatly prolongs the service life of the handwheel and saves costs.

Claims

1. A flexible finger-type bottle valve opening and closing structure, characterized in that: The invention comprises a metal sleeve (3), the bottom of the metal sleeve (3) is open, an airbag wall (11) is arranged inside the metal sleeve (3), the airbag wall (11) is made of a flexible material, the upper and lower ends of the inner wall of the metal sleeve (3) are sealedly connected to the upper and lower ends of the airbag wall (11), and the metal sleeve (3) and the airbag wall (11) together surround and form an airbag cavity; an inflation port (16) is also arranged on the metal sleeve (3), the top surface of the metal sleeve (3) is connected to an upper pressure cover (4), the upper part of the upper pressure cover (4) is elastically connected to an extension rod (5), and the extension rod (5) is connected to a driving device.

2. The flexible finger-like bottle valve opening and closing structure according to claim 1 is characterized in that: The bottom of the metal sleeve (3) is provided with an external thread A (13), and the metal sleeve (3) is connected to the lower pressure cover (2) through the external thread A (13); a lower pressure cover pressing ring (12) is provided inside the lower pressure cover (2), and the edge of the lower pressure cover pressing ring (12) is provided with a chamfered structure, and the lower end of the airbag wall (11) is clamped between the lower pressure cover pressing ring (12) and the metal sleeve (3).

3. The flexible finger-type bottle valve opening and closing structure according to claim 2 is characterized in that: The upper pressure cover (4) comprises an upper pressure cover shaft (17) and an upper pressure cover plate (20), and the upper pressure cover shaft (17) is provided with an external thread B (18); an upper pressure cover mounting through hole (15) is provided at the center of the top surface of the metal sleeve (3), the diameter of the upper pressure cover plate (20) is larger than the diameter of the upper pressure cover mounting through hole (15), the upper pressure cover shaft (17) passes through the upper pressure cover mounting through hole (15) from the bottom of the metal sleeve (3) upward, and is locked and connected with the metal sleeve (3) through a nut (9); the upper end of the airbag wall (11) is clamped between the upper pressure cover plate (20) and the metal sleeve (3).

4. The flexible finger-like bottle valve opening and closing structure according to claim 3 is characterized in that: Bolt mounting through holes (14) are provided on both sides of the upper pressure cover mounting through hole (15) of the metal sleeve (3), and threaded holes (19) matching with the bolt mounting through holes (14) are provided on the upper pressure cover plate (20), and the bolts (10) pass through the bolt mounting through holes (14) and are screwed into the threaded holes (19).

5. The flexible finger-like bottle valve opening and closing structure according to claim 3 is characterized in that: An extension rod installation groove (21) is provided at the center of the upper portion of the upper gland shaft (17), the extension rod (5) is located in the extension rod installation groove (21), and the extension rod (5) is movably connected to the upper gland shaft (17) via a pin shaft (6).

6. The flexible finger-like bottle valve opening and closing structure according to claim 5, characterized in that: The bottom of the extension rod (5) is threadedly connected to the screw plug (8), and inner holes are provided on the contact surfaces of the extension rod (5) and the screw plug (8). The inner holes of the extension rod (5) and the screw plug (8) together surround a spring cavity, in which a spring (7) is provided.

7. The flexible finger-type bottle valve opening and closing structure according to claim 6, characterized in that: The extension rod (5) is provided with a long hole (22), a pin shaft (6) is movably arranged in the long hole (22), and the pin shaft (6) is pressed above the spring (7).

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