TWI402451B - High pressure cylinder inlet anti - overpressure device - Google Patents

Description

High pressure gas cylinder intake anti-overpressure device

The invention relates to a high-pressure gas cylinder intake anti-overpressure device, in particular to a high-pressure gas cylinder envelope structure capable of preventing gas overpressure in a bottle and avoiding freezing injury caused by low temperature gas when a user deflates the intake valve group.

According to the conventional high-pressure gas cylinder intake valve structure, it is installed in the bottle head group and adopts an embedded design, and an open end thereof is provided with an adapter to be combined with a gas cylinder provided with an envelope, so that the gas in the gas cylinder can be obtained. The bottle body is filled into the bottle under the control head via the intake valve group, and according to the regulation DIN32615, the bottle head group must have a pressure limiting device to avoid the pressure rise of more than 35 bar, so that the air intake is intentionally or carelessly used during use. At pressures greater than 35 bar, the bottle head group must be able to prevent excessive gas ingress and cause overpressure of the bottle. Therefore, the conventional high-pressure gas cylinder intake valve structure is provided with a pressure relief hole on the adapter to help discharge excess gas.

However, the above-mentioned high-pressure gas cylinder intake valve structure has the following disadvantages in use: since the intake valve group is embedded with its side surface and the main body side, the user's hand in operation is directly contacted, The low temperature gas (about -20 ° C) leaked from the vent hole provided in this area causes a problem of frostbite of the user.

In view of the above-mentioned shortcomings in the conventional high-pressure gas cylinder intake valve structure, the inventors have finally developed the present invention in view of the improvement of these missing studies.

The main object of the present invention is to provide a high pressure gas cylinder intake anti-overpressure device, wherein an exhaust passage is arranged in the intake valve group to prevent gas from accumulating in the intake valve group and prevent gas from continuously pouring into the bottle body. Increase the risk to more than 35 bar to comply with the regulation DIN32615.

A secondary object of the present invention is to provide a high-pressure gas cylinder intake anti-overpressure device, wherein the exhaust passage provided in the intake valve group can prevent the user in the operation from directly contacting the vent hole and causing frostbite.

In order to achieve the above object, the high pressure gas cylinder intake anti-overpressure device of the present invention mainly comprises: an intake valve sleeve, an intake piston body, a relay component, a thimble, a fixed component and a locking component; wherein The intake valve sleeve is a hollow circular tube with a longitudinal hole. The intake piston body is a cylinder and a gas chamber is arranged at the center. The lower end of the relay element is a reduced end, and a nozzle is arranged at the center of the upper end. An exhaust passage is provided at the outer edge of the hole, and the lock component is provided with an exhaust passage at an appropriate position on the outer edge. When combined, the lower end of the relay component is placed in the air chamber of the intake piston body and then fixed to the intake valve sleeve. Inside, the fixed component is placed above the relay component, the air nozzle hole above the relay component corresponds to the hole of the fixed component, and then the ejector pin is inserted, and then the locking component and the fixed component are combined and fixed. And corresponding to the exhaust passage of the locking component and the exhaust passage of the relay component, wherein the high-pressure cylinder intake anti-overvoltage device and the exhaust component corresponding to the locking component and the locking component are formed by the above components Road, can prevent the external gas from continuing Leading to the gas bottle into the overpressure, and to prevent the user when the intake valve group discouraged due to low temperature of the gas cause frostbite purposes.

As for the detailed construction of the present invention, the principle of operation and the effect of production can be fully understood by referring to the following illustrations:

Please refer to FIG. 1 and FIG. 2 for a perspective exploded view of the preferred embodiment of the present invention, and a schematic diagram of gas entry into the intake valve block. As can be seen from the figure, the present invention mainly includes: an intake valve sleeve 21 and an intake piston. The body 24, the relay member 26, the thimble 27, the fixed member 28, that is, the locking member 29, and the like; wherein the intake valve sleeve seat 21 is a hollow circular tube provided with a longitudinal hole 211.

The intake piston body 24 is a cylinder with a gas chamber 241 at the center and an air passage 244. The middle portion of the outer edge of the outer ring is provided with a gasket groove 242 and an air outlet 2441, and the lower portion of the outer edge of the intake piston body 24 is suitable. A piston neck 243 is provided.

At the center of the upper end of the relay member 26, a nozzle hole 261 is engaged with the air passage 2611. The outer edge of the upper end is appropriately provided with an exhaust passage 262, and the lower end is a reduced end provided with a washer groove 263 and a vent hole 2612. The end end is a tapered head 264, and the air passage 2611 is engaged with the vent hole 2612.

An air passage 271 is disposed in the center of the thimble 27.

A hole 281 is defined in the center of the positioning member 28.

The locking member 29 is a circular through-piece having a corresponding two groove portions 291 at the upper periphery thereof and an exhaust passage 292 at the outer edge.

When assembled, a closure member 22 is placed over the piston neck portion 243 of the intake piston body 24, the leak stop washer 23 is fitted over the gasket groove 242 of the intake piston body 24, and a leak stop washer 25 is placed over the relay member. The gasket groove 263 of the 26 is placed, and then the reduced end of the relay member 26 is placed in the air chamber 241 provided above the intake piston body 24, and the fixed components 28 are placed on the relay member 26 after combining the two. Above, the nozzle hole 261 above the relay element 26 corresponds to the hole 281 of the fixed component, and then the thimble 27 is inserted into the corresponding nozzle hole 261 and the hole 281 to be fixed, and finally the locking component is fixed. 29 is fixedly coupled with the positioning member 28, and the relay member 26 corresponds to the exhaust passage 262 and the exhaust passage 292 of the locking member 29 and can form the intake valve group 2, and then is disposed above the locking member 29. After the groove portion 291 locks the intake valve block 2 to the valve chamber 12 of the control head 1 by a tool, a discharge shaft 3 is installed in the control head 1 to discharge the discharge shaft 3 from below the control head 1. The upper end is placed at the discharge opening 11 such that the bottom end 31 of the shaft core faces the lower discharge shaft 3 and the other end is exposed at the discharge port 11 above the control head 1, and then the spring 3 is 2. The fixing screws 33 are sleeved on the discharge shaft 3 at the other end to be fixed, and a button 13 is installed at the outer edge of the control head 1, and a bottle cap can be placed under the control head 1 first. The gasket 14 is then fixed in combination with a bottle body 6.

When used, please refer to Figures 2, 3, 4, and 5 for a gas inlet diagram of the intake valve block according to a preferred embodiment of the present invention, an enlarged schematic view of the structure of the A portion of the second figure, and a schematic diagram of the overpressure prevention of the gas valve. 4 is a schematic enlarged view of the structure of part B. It can be seen from the figure that after a gas cylinder 5 is placed in the accommodating space 41 of the envelope 4, the gas cylinder 5 equipped with the envelope 4 is inserted above the control head 1 The valve chamber 12 of the intake valve group 2 is provided, and the closing member 51 of the cylinder 5 at the mouth of the bottle can be pierced by the thimble 27, so that the gas in the gas chamber 51 can flow into the bottle through the intake valve group 2. 6. When the closing member 51 is punctured by the thimble 27, the gas flows through the air passage 271 of the thimble 27, the air passage 2611 of the relay member 26, and then flows out of the vent hole 2612 to allow the gas to enter the plenum 241 and enter the plenum 241. The gas flows out from the air outlet 2441 via the air passage 244, and the closing member 22 sleeved on the piston neck portion 243 of the intake piston body 24 is slightly displaced by the gas pressure, so that the gas can flow out into the bottle body 6 (the same Referring to Fig. 3), as the gas continues to enter the bottle body 6, the pressure in the bottle body 6 is gradually increased, and the bottle body 6 is at this time. The internal air pressure pushes the intake piston body 24 upward, and the tapered head 264 of the relay member 26 and the flow passage 244 that will abut against the intake piston body 24 prevent the gas in the upper gas cylinder 5 from continuing to enter the bottle body. 6 to ensure that the gas pressure in the bottle is maintained below 35 bar, and the gas leaked before the gas inflow can be discharged from the gas chamber 241 above the flow channel 244, and then through the intake piston body 24 and relay. The gap of the component 26 leaks out and flows to the corresponding relay element 26 and the exhaust passage 262 and the exhaust passage 292 of the locking component 29, so that excess gas can be discharged outside the control head 1 (see FIG. 5). Since the user holds the control head 1 by hand when using the high-pressure gas cylinder, it is possible to ensure that the low-temperature gas (about -20 ° C) leaked from the bottle does not directly contact the user's hand, causing frostbite. When the user presses the button 13 when the user wants to extrude the material in the bottle, the material in the bottle enters from the bottom end 31 of the discharge shaft 3 and is discharged from the end of the fixing screw 33.

In summary, the high-pressure gas cylinder intake anti-overpressure device of the present invention has the function of preventing the overpressure of the gas in the bottle and avoiding the frostbite caused by the low temperature gas when the user deflates the intake valve group. However, these effects can indeed improve the shortcomings achieved by the prior practitioners, and the invention is not disclosed for public use, conforms to the requirements of the patent, and the invention patent application is filed according to law, and the patent is granted, which is a pray.

1. . . Control head

11. . . Outlet

12. . . Valve room

13. . . Button

14. . . Cap large gasket

2. . . Intake valve group

twenty one. . . Intake valve casing

211. . . Longitudinal hole

twenty two. . . Closure element

23, 25. . . Leak stop washer

twenty four. . . Intake piston body

241. . . Air chamber

242. . . Washer groove

243. . . Piston neck

244. . . airway

2441. . . Vent

26. . . Relay component

261. . . Air hole

2611. . . airway

2612. . . Vent

262. . . Exhaust passage

263. . . Washer groove

264. . . Conical head

27. . . thimble

271. . . airway

28. . . Fixed component

281. . . hole

29. . . Locking element

291. . . Groove

292. . . Exhaust passage

3. . . Discharge axis

31. . . Bottom of the shaft

32. . . spring

33. . . Fixing screw

4. . . Envelope

41. . . Housing space

5. . . High pressure gas cylinder

51. . . Air chamber

52. . . Closure element

6. . . Bottle body

Figure 1 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 2 is a schematic view of gas entry into the intake valve block of the preferred embodiment of the present invention.

Fig. 3 is an enlarged schematic view showing the structure of part A of Fig. 2.

Figure 4 is a schematic view of the intake valve block preventing overpressure according to a preferred embodiment of the present invention.

Fig. 5 is an enlarged schematic view showing the structure of part B of Fig. 4.

1. . . Control head

11. . . Outlet

12. . . Valve room

13. . . Button

14. . . Cap large gasket

2. . . Intake valve group

twenty one. . . Intake valve casing

211. . . Longitudinal hole

twenty two. . . Closure element

23, 25. . . Leak stop washer

twenty four. . . Intake piston body

241. . . Air chamber

242. . . Washer groove

243. . . Piston neck

2441. . . Vent

26. . . Relay component

261. . . Air hole

2612. . . Vent

262. . . Exhaust passage

263. . . Washer groove

264. . . Conical head

27. . . thimble

28. . . Fixed component

281. . . hole

29. . . Locking element

291. . . Groove

292. . . Exhaust passage

3. . . Discharge axis

31. . . Bottom of the shaft

32. . . spring

33. . . Fixing screw

Claims (1)

The utility model relates to a high pressure gas cylinder intake anti-overpressure device, which is composed of: an intake valve sleeve, an intake piston body, a relay element, a thimble, a fixed component and a locking component; the intake valve sleeve is a a hollow circular tube; the inlet piston body is a cylinder having a gas chamber at the center and a gas chamber connected to the air passage, and a gasket groove and an air outlet are arranged at an outer edge of the cylinder, and a piston neck is disposed at a lower portion of the outer edge of the inlet piston And a nozzle hole at the center of the upper end of the relay element is coupled to the air passage of the connecting end, and an exhaust passage is disposed at an outer edge of the upper end; wherein the locking component is a circular shape The penetrating member has two corresponding groove portions on the upper periphery thereof, and an exhaust passage is disposed at the outer edge; the reduced end of the relay element is placed in the air chamber provided above the intake piston body, and the two are combined Then, the hole of the fixed component corresponds to the nozzle hole provided above the relay component, and then the thimble is inserted into the nozzle hole of the relay component, the hole of the fixed component is fixed and fixed, and finally the locking component and the fixed component are fixed. Combine and relay components and locking components Corresponding exhaust passage, it can be formed within a gas cylinder to prevent continuous gas is poured into the bottle leads to a high pressure gas cylinder intake air overpressure overpressure prevention means.