Flexible finger-like cylinder valve opening and closing structure

Abstract

The utility model 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 air bag 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 air bag 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; according to the utility model, a full-wrapping mode of embedding the appearance of the cylinder valve hand wheel is adopted, so that the effect of automatically opening and closing 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 moreover, 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 surface of the cylinder valve hand wheel cannot be axially abraded, the service life of the cylinder valve hand wheel is greatly prolonged, and the cost is saved.

Description

Technical Field

[0001] The utility model 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. The original backward manual filling 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, affecting the service life of the handwheel and increasing maintenance costs. In addition, there is a safety hazard of personal scratches when manually opening and closing the valve handwheel. Utility Model Content

[0004] In view of the above deficiencies in the existing technology, the technical problem to be solved by the utility model is: to provide a flexible finger-like 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-like bottle valve opening and closing structure described in the utility model includes a metal sleeve with an opening at the bottom. An airbag wall is provided on the inner side of the metal sleeve, and the airbag wall is made of flexible material. The upper and lower ends of the inner wall of the metal sleeve are sealed with the upper and lower ends of the airbag wall. The metal sleeve and the airbag wall together surround an airbag cavity that can expand or contract; an inflation port is also provided 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 utility model is to provide a flexible finger-like bottle valve opening and closing structure, in which an expandable or contractible airbag cavity is formed by a metal sleeve and an airbag wall. 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 ring is provided inside the lower pressure cover, and the edge of the lower pressure cover ring is provided with a chamfered structure, and the lower end of the airbag wall is clamped between the lower pressure cover 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 with the metal sleeve by 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 during movement.

[0010] Preferably, an extension rod installation groove is provided in the center of the upper portion 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 the screw plug, and an inner hole is provided on the contact surface of the extension rod and the screw plug. The inner hole of the extension rod and the inner hole of the screw plug together surround a spring cavity, and a spring is provided in the spring cavity.

[0012] Furthermore, the extension rod is 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 utility model adopts a full-wrapped mode with an embedded bottle valve handwheel shape, 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 air bag cavity of the utility model is not inflated, bottle valve handwheels with different outer contour sizes can be easily inserted or removed to deal with the situation where the bottle valve is not centered within the offset range or the handwheel is tilted due to the bottle valve being crooked; after the air bag cavity is inflated, a flexible surface wrapping extrusion can be formed according to the different bottle valve handwheel shapes, and no radial wear is caused to the bottle valve handwheel contact surface; and the utility model will produce a certain up and down offset of the handwheel according to the lifting and lowering of the handwheel formed by the opening and closing of the bottle valve handwheel, and will not cause axial wear to the bottle valve handwheel contact surface, 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 structural diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

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

[0018] Figure 4 is 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 gland; 3. Metal sleeve; 4. Upper gland; 5. Extension rod; 6. Pin; 7. Spring; 8. Plug; 9. Nut; 10. Bolt; 11. Airbag wall; 12. Lower gland ring; 13. External thread A; 14. Bolt mounting hole; 15. Upper gland mounting hole; 16. Inflation port; 17. Upper gland shaft; 18. External thread B; 19. Threaded hole; 20. Upper gland plate; 21. Extension rod mounting slot; 22. Long hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] like Figures 1 to 8 As shown, this embodiment is implemented through the following technical solutions: it includes a metal sleeve 3, the bottom of the metal sleeve 3 is open, and an airbag wall 11 is provided 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 with the upper and lower ends of the airbag wall 11. The metal sleeve 3 and the airbag wall 11 together surround an expandable or contractible airbag cavity; the metal sleeve 3 is also provided with an inflation port 16, 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, the bottom of the metal sleeve 3 is provided with an external thread A13, and the metal sleeve 3 is connected to the lower pressure cover 2 through the external thread A13; a lower pressure cover ring 12 is provided inside the lower pressure cover 2, and the edge of the lower pressure cover 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 ring 12 and the metal sleeve 3.

[0027] The upper gland 4 includes an upper gland shaft 17 and an upper gland plate 20. The upper gland shaft 17 is provided with an external thread B18. A through-hole 15 for mounting the upper gland is defined at the center of the top surface of the metal sleeve 3. The diameter of the upper gland plate 20 is larger than that of the through-hole 15. The upper gland shaft 17 extends upward through the through-hole 15 from the bottom of the metal sleeve 3 and is locked to the metal sleeve 3 via a nut 9. The upper end of the airbag wall 11 is sandwiched between the upper gland plate 20 and the metal sleeve 3. Bolt mounting holes 14 are provided on either side of the upper gland mounting hole 15 of the metal sleeve 3. The upper gland plate 20 is provided with threaded holes 19 that mate with the bolt mounting holes 14. Bolts 10 pass through the bolt mounting holes 14 and are screwed into the threaded holes 19 to prevent relative rotation between the metal sleeve 3 and the upper gland 4 during movement.

[0028] An extension rod mounting slot 21 is defined at the center of the upper portion of the upper gland shaft 17. The extension rod 5 is positioned within this slot and flexibly connected to the upper gland shaft 17 via a pin 6. The bottom of the extension rod 5 is threadedly connected to a screw plug 8, creating a clearance 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 each have an inner hole, which together encloses a spring cavity containing a spring 7. The extension rod 5 also has an elongated hole 22, into which a pin 6 is movably mounted, pressing against the spring 7.

[0029] The working principle of this utility model is:

[0030] The utility model 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, causing the airbag wall 11 to expand 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 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 utility model 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 opening and closing 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 provided on the inner side of 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 sealed 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 provided 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, 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 ring (12) is provided inside the lower pressure cover (2), and the edge of the lower pressure cover ring (12) is provided with a chamfered structure, and the lower end of the airbag wall (11) is clamped between the lower pressure cover ring (12) and the metal sleeve (3).

3. The flexible finger-like bottle valve opening and closing structure according to claim 2, characterized in that: The upper pressure cover (4) includes 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 to 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, characterized in that: Bolt mounting holes (14) are provided on both sides of the upper pressure cover mounting hole (15) of the metal sleeve (3), and threaded holes (19) matching the bolt mounting holes (14) are provided on the upper pressure cover plate (20), and the bolts (10) pass through the bolt mounting 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, 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) through 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 an inner hole is provided on the contact surface of the extension rod (5) and the screw plug (8). The inner hole of the extension rod (5) and the inner hole of the screw plug (8) together surround a spring cavity, and a spring (7) is provided in the spring cavity.

7. The flexible finger-like 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).

Images