Quickly-connected assembly cylinder valve

Abstract

A quick connection assembly cylinder valve comprises a stop valve and a pressure reducing valve, the bottom end of the stop valve is connected with a gas cylinder through threads, the top end of the pressure reducing valve is provided with an adjusting rod connected with a mask, the other end of the stop valve and the other end of the pressure reducing valve are combined together through a connecting mechanism, the stop valve is provided with a through hole, and the through hole is communicated with the pressure reducing valve. A through hole is formed in the stop valve and divided into a first hole with the large diameter and a second hole with the small diameter, a valve element penetrates through the first hole and the second hole, a circle of step is arranged on the valve element, and when the stop valve and the pressure reducing valve are separated, the step seals the lower end of the second hole under the action of the spring. Gas in the gas cylinder is prevented from passing through the second hole; the pressure reducing valve comprises a valve body and an adjusting rod, a through hole is formed in the middle of the valve body, the adjusting rod is arranged in the through hole, an air outlet is formed in the middle of the adjusting rod, and the air outlet is communicated with the through hole.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a bottle valve. Background Art

[0002] The gas pressure in oxygen cylinders is very high, and it will cause harm to people if it is discharged directly. Therefore, oxygen cylinders are generally equipped with bottle valves. The bottle valve has two functions: one is to control the on and off of oxygen, and the other is to reduce the pressure of the oxygen.

[0003] Originally, these two functions were concentrated on one valve, which meant that the oxygen cylinder could be opened directly, causing the oxygen cylinder to be accidentally opened and leak, so it was necessary to improve it. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a quick connection assembly bottle valve, which is divided into two parts. When the two parts are not combined, the bottle valve cannot be opened.

[0005] The technical solution of the utility model is: a quick connection assembly bottle valve, including a stop valve and a pressure reducing valve, the bottom end of the stop valve is connected to the gas cylinder through a thread, the top end of the pressure reducing valve is provided with an adjusting rod connected to the mask, the other ends of the stop valve and the pressure reducing valve are combined together through a connecting mechanism,

[0006] The stop valve has a through hole, which is divided into a first hole with a larger diameter and a second hole with a smaller diameter. A valve core passes through the first hole and the second hole. The valve core is provided with a circle of steps. When the stop valve and the pressure-reducing valve are separated, the step seals the lower end of the second hole under the action of the spring, thereby preventing the gas in the gas cylinder from passing through the second hole.

[0007] The pressure reducing valve includes a valve body and an adjusting rod. A through hole is provided in the middle of the valve body. The adjusting rod is arranged in the through hole. An air outlet is provided in the middle of the adjusting rod. The air outlet is communicated with the through hole. When the stop valve and the pressure reducing valve are combined together, the adjusting rod contacts the valve core.

[0008] In the above technical solution, preferably, the connecting mechanism includes a guide rod arranged on the outer ring of the valve body and a connecting head arranged on the top of the stop valve, and a slide groove is provided on the connecting head, and the slide groove is divided into a guide port, an annular groove and a limit groove. The top of the guide port passes through the connecting head, and the bottom of the guide port is connected to one end of the annular groove. The annular groove surrounds the connecting head at an angle, and a clamping groove is provided at the other end of the annular groove. When combined, the guide rod enters the annular groove from the guide port, rotates an angle port, and is clamped in the clamping groove to achieve connection.

[0009] In the above technical solution, preferably, there are two groups of the slide grooves and the guide rods.

[0010] In the above technical solution, preferably, the adjusting rod is connected in the through hole by means of threads.

[0011] In the above technical solution, preferably, the bottom of the stop valve has a screw-on portion, and a pin is provided on the screw-on portion. The pin passes through the screw-on portion and is inserted into the through hole. One end of the spring is sleeved on the valve core, and the other end of the spring is against the valve core.

[0012] The utility model has the following beneficial effects: the utility model divides the cylinder valve into two parts. When the oxygen cylinder is not in use, a stop valve is connected to the oxygen cylinder. Under the action of the spring, the step seals the lower end of the second hole to prevent the gas in the cylinder from passing through the second hole. In this way, the stop valve cannot be opened manually to prevent gas from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.

[0014] Figure 2 for Figure 1 sectional view of .

[0015] Figure 3 for Figure 2 A partial enlarged view of . DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1 - Figure 3 The utility model is a quick-connect assembly cylinder valve, comprising a stop valve 2 and a pressure-reducing valve 1. The bottom end of the stop valve 2 is connected to the gas cylinder through a thread, and the top end of the pressure-reducing valve 1 is provided with an adjusting rod 12 connected to the mask. The other ends of the stop valve 2 and the pressure-reducing valve 1 are combined together through a connecting mechanism.

[0018] The stop valve 2 has a through hole 221, which is divided into a first hole 22a with a larger diameter and a second hole 22b with a smaller diameter. A valve core 24 passes through the first and second holes. The valve core 24 is provided with a circle of steps 241. When the stop valve and the pressure-reducing valve are separated, the step seals the lower end of the second hole under the action of the spring 25, preventing the gas in the gas cylinder from passing through the second hole.

[0019] The pressure reducing valve 1 includes a valve body 11 and an adjusting rod 12. A through hole 11a is provided in the middle of the valve body 11. The adjusting rod is arranged in the through hole. An air outlet 121 is provided in the middle of the adjusting rod. The air outlet is communicated with the through hole. When the stop valve and the pressure reducing valve are combined together, the adjusting rod contacts the valve core.

[0020] The connecting mechanism includes a guide rod 111 arranged on the outer ring of the valve body 11 and a connecting head 21 arranged on the top of the stop valve 2. The connecting head 21 is provided with a slide groove, which is divided into a guide port 211, an annular groove 212 and a limit groove 213. The top of the guide port passes through the connecting head, and the bottom of the guide port is connected to one end of the annular groove. The annular groove surrounds the connecting head at a certain angle, and a clamping groove is provided at the other end of the annular groove. When assembled, the guide rod enters the annular groove from the guide port, rotates a certain angle, and is clamped into the clamping groove to achieve connection.

[0021] There are two groups of the slide grooves and the guide rods.

[0022] The adjusting rod is connected in the through hole by means of threads.

[0023] The bottom of the stop valve 2 has a screw-on portion 22, and a pin 23 is provided on the screw-on portion 22. The pin 23 passes through the screw-on portion and is inserted into the through hole. One end of the spring is sleeved on the valve core, and the other end of the spring is against the valve core.

[0024] When not in use, a shut-off valve is connected to the oxygen cylinder. Under the action of a spring, the step seals the lower end of the second hole, preventing the gas in the cylinder from passing through the second hole. This prevents manual opening of the shut-off valve and prevents gas from overflowing. When in use, a pressure-reducing valve is connected to the shut-off valve. By rotating the adjustment rod, the valve core can be pushed downward, causing the step to move away from the second hole, allowing the gas in the cylinder to enter the second hole. By changing the up and down position of the adjustment rod, the airflow area between the adjustment rod and the end surface of the second hole can be changed. Adjusting this area can affect the outlet pressure.

[0025] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A quick-connect assembly bottle valve, characterized in that: It includes a stop valve and a pressure reducing valve. The bottom end of the stop valve is connected to the gas cylinder through a thread. The top end of the pressure reducing valve is provided with an adjusting rod connected to the mask. The other ends of the stop valve and the pressure reducing valve are combined together through a connecting mechanism. The stop valve has a through hole, which is divided into a first hole with a larger diameter and a second hole with a smaller diameter. A valve core passes through the first hole and the second hole. The valve core is provided with a circle of steps. When the stop valve and the pressure-reducing valve are separated, the step seals the lower end of the second hole under the action of the spring, thereby preventing the gas in the gas cylinder from passing through the second hole. The pressure reducing valve includes a valve body and an adjusting rod. A through hole is provided in the middle of the valve body. The adjusting rod is arranged in the through hole. An air outlet is provided in the middle of the adjusting rod. The air outlet is communicated with the through hole. When the stop valve and the pressure reducing valve are combined together, the adjusting rod contacts the valve core.

2. The quick-connect assembly bottle valve according to claim 1, characterized in that: The connecting mechanism includes a guide rod arranged on the outer ring of the valve body and a connecting head arranged on the top of the stop valve, and a slide groove is provided on the connecting head, and the slide groove is divided into a guide port, an annular groove and a limit groove. The top of the guide port passes through the connecting head, and the bottom of the guide port is connected to one end of the annular groove. The annular groove surrounds the connecting head at an angle, and a clamping groove is provided at the other end of the annular groove. When assembled, the guide rod enters the annular groove from the guide port, and after rotating an angle, it is clamped in the clamping groove to achieve connection.

3. The quick-connect assembly bottle valve according to claim 2, characterized in that: There are two groups of the slide grooves and the guide rods.

4. The quick-connect assembly bottle valve according to claim 1, characterized in that: The adjusting rod is connected in the through hole by means of threads.

5. The quick-connect assembly bottle valve according to claim 1, characterized in that: The bottom of the stop valve has a screw-on portion, and a pin is provided on the screw-on portion. The pin passes through the screw-on portion and is inserted into the through hole. One end of the spring is sleeved on the valve core, and the other end of the spring is against the valve core.

Images