Combined gas pressure measuring and inflating device

Abstract

The utility model relates to a combined type gas pressure measuring and inflating device, and belongs to the technical field of diving devices. The device comprises a pressure measuring part and a detachably-connected inflation part, the pressure measuring part comprises a pipe body, a cavity for containing gas is formed in the pipe body, one end of the pipe body is provided with a threaded connector communicated with the cavity, the other end of the pipe body is provided with a gas release valve, and a pressure gauge is arranged on the pipe body; the inflation component comprises a base, an air channel with two through sides is arranged on the base, a positioning ring used for positioning the bottle head valve connector is arranged on one side of the base, a connector is arranged on the other side of the base, and the connector is provided with threads matched with the threaded connector. A door type supporting frame is further arranged on the base, a threaded through hole is formed in the door type supporting frame, an adjusting rod is connected and penetrates into the threaded through hole, a rotating handle is arranged at the outer end of the adjusting rod, and a pressing head matched with an opening of the bottle head valve is arranged at the inner end of the adjusting rod. The diving gas cylinder emergency inflation device is simple in structure, small in occupied space, convenient and flexible to operate and use, capable of achieving the pressure measuring function and suitable for diving gas cylinder emergency inflation.

Description

Technical Field

[0001] The utility model relates to the technical field of diving devices, in particular to a combined gas pressure measuring and inflating device. Background Art

[0002] For many years, diving equipment has been used in military applications and / or professional applications as well as in amateur sports to provide breathing air to users of diving equipment, and diving cylinders are an important part of diving equipment, which provide a source of breathing air for divers working underwater. When the gas in the diving cylinder is used up, it needs to be concentrated at a dedicated refilling point for refilling. However, in some special cases, it is necessary to use a high-pressure gas source for emergency refilling of the diving cylinder, and the refilling interface device of the diving cylinder has a complex structure and is not easy to carry, which is not convenient for emergency use.

[0003] After searching, it is found that there are also inflatable structures for gas cylinders in patent documents, such as a combined gas cylinder valve and pressure reducer for underwater use with publication number CN 111911676A, which relates to an inflatable structure for gas cylinders, specifically including a gas cylinder valve and a pressure reducer, the gas cylinder valve including a high-pressure valve seat, a connecting seat is provided on the high-pressure valve seat, an inflation head assembly is fixed on one side of the seat body of the high-pressure valve seat through the connecting seat, a high-pressure gauge is provided on the other side, and a gas cylinder knob switch is connected to the top of the high-pressure valve seat; a protrusion protruding from the seat body is provided at one end of the high-pressure valve seat, the pressure reducer is rotatably connected to the protrusion, through holes are provided from top to bottom on both sides of the inner hole of the protrusion, a U-shaped clip is provided in the through hole, and a filter tube is provided in the end of the high-pressure valve seat opposite to the protrusion. This scheme occupies a small space as a whole, is easy to carry, and is suitable for emergency inflation of gas cylinders. However, the inflation head assembly of this structure is directly connected to the high-pressure valve seat. For a diving cylinder with a bottle head valve, it is necessary to remove the bottle head valve and then install the cylinder valve on the diving cylinder to realize the inflation operation, which makes the emergency inflation operation of the diving cylinder more cumbersome. Utility Model Content

[0004] In order to solve the problem that the inflation interface of the diving cylinder in the prior art is relatively cumbersome to use, the utility model provides a combined gas pressure measuring and inflation device, which has a simple structure, occupies a small space, is easy and flexible to operate and use, and can also take into account the pressure measurement function.

[0005] It adopts the following technical solutions:

[0006] A combined gas pressure measuring and inflating device comprises a pressure measuring component and a detachably connected inflating component, wherein the inflating component inflates a diving cylinder through a cylinder head valve; the pressure measuring component comprises a tube body, wherein the tube body has a cavity for accommodating gas, one end of the tube body is provided with a threaded interface communicating with the cavity, the other end is provided with an air release valve for releasing the pressure in the cavity, and the tube body is provided with a pressure gauge for detecting the inside of the cavity;

[0007] The inflatable component includes a base, which is provided with an air passage running through both sides. A positioning ring for positioning the bottle head valve interface is provided on the base on one side of the air passage, and a connecting head which can be connected to an external high-pressure gas source is provided on the base on the other side, and the connecting head has a thread that matches the threaded interface; a portal support frame is also provided on the base, and a threaded through hole facing the positioning ring and coaxially arranged therewith is provided on the portal support frame, and an adjusting rod is connected to and penetrated in the threaded through hole, and a rotating handle is provided at the outer end of the adjusting rod, and a pressure head that matches the opening of the bottle head valve is provided at the inner end; when the adjusting rod is rotated, the pressure head can press against the opening of the bottle head valve, so that the gas from the external high-pressure gas source can inflate the diving cylinder through the connecting head, the air passage and the bottle head valve.

[0008] Furthermore, the portal support frame is also provided with a guide hole coaxially arranged with the threaded through hole, the guide hole is located outside the threaded through hole, and the diameter of the guide hole is larger than the threaded through hole; the adjustment rod has an optical axis section adapted to the guide hole.

[0009] Furthermore, a chamfer is provided at the opening of the outer side of the guide hole.

[0010] Furthermore, the thread of the threaded through hole is a fine pitch thread.

[0011] Furthermore, a sealing gasket is provided on the base on one side of the positioning ring, and the sealing gasket can fit with the end face of the bottle head valve interface.

[0012] Furthermore, the tube body is also provided with an air inlet interface connected to the cavity, and the air inlet interface can be selectively connected to a high-pressure air source and a plug.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The device is provided with a detachable pressure measuring component and an inflation component, so that the whole device forms a split structure, the device occupies a small space and is easy to carry, and each split structure is relatively simple, and the pressure measuring component is used alone to achieve the purpose of pressure measurement; the adjusting rod is connected with the threaded through hole, so that the pressure head of the adjusting rod can be adjusted and moved and can be pressed against the opening of the bottle head valve, so that the inflation component is connected with the inside of the diving cylinder to achieve the purpose of inflation. The device is relatively convenient and flexible to operate and use as a whole, and is suitable for emergency inflation of diving cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a combined gas pressure measuring and inflating device according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a pressure measuring component in an embodiment of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the inflatable component in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the inflatable component in the embodiment of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the guide hole and the corresponding matching parts in the embodiment of the utility model;

[0020] Figure 6 It is another structural schematic diagram of the pressure measuring component in the embodiment of the utility model.

[0021] Explanation of the reference numerals: 1. Diving cylinder; 2. Cylinder valve; 100. Pressure measuring component; 110. Tube body; 111. Cavity; 112. Threaded interface; 113. Air relief valve; 120. Pressure gauge; 130. Air inlet interface; 140. Plug; 200. Inflatable component; 210. Base; 211. Air channel; 212. Positioning ring; 213. Connector; 220. Gantry support frame; 221. Threaded through hole; 222. Guide hole; 222a, chamfer; 230. Adjustment rod; 231. Optical axis section; 240. Rotary handle; 250. Pressure head; 260. Sealing gasket. DETAILED DESCRIPTION

[0022] In order to make the present invention more clear, a combined gas pressure measuring and inflating device of the present invention is further described below in conjunction with the accompanying drawings. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0023] like Figure 1 As shown, a combined gas pressure measuring and inflating device comprises a pressure measuring component 100 and a detachably connected inflating component 200. The inflating component 200 inflates the diving cylinder 1 through the bottle head valve 2; the bottle head valve 2 as a prior art plays the role of a one-way valve, and by pressing one side of the bottle head valve 2, a passage is formed on the other side thereof, and the passage can be conducted with the inside of the diving cylinder 1, and the common interfaces of the bottle head valve 2 are mainly DIN type and Yoke type.

[0024] Combination Figure 1 , Figure 2As shown, the pressure measuring component 100 includes a metal tube 110, which has a cavity 111 for accommodating pressurized gas. A threaded interface 112 communicating with the cavity 111 is provided at one end of the tube 110, and the threaded interface 112 can be connected to the inflatable component 200. The other end of the tube 110 is provided with a relief valve 113 for releasing the pressure in the cavity 111. The relief valve 113 is a prior art, and the air pressure in the cavity 111 can be quickly reduced by opening the relief valve 113 to play a safety protection role. In addition, a pressure gauge 120 for detecting the inside of the cavity 111 is provided on the tube 110 to visually read the gas pressure in the cavity. When the pressure measuring component 100 is used alone, it can be connected to a gas cylinder with a matching interface to test the pressure in the cylinder. After the test, the relief valve 113 can be opened to safely disassemble and separate.

[0025] Combination Figure 1 , Figure 3 , Figure 4As shown, the inflatable component 200 includes a base 210 made of metal. The base 210 is cylindrical in shape as a whole. An air channel 211 is provided along its axial direction and is connected to both sides. An outwardly protruding positioning ring 212 is provided on one end face of the base 210 (the end face of the base on one end side of the air channel 211). The positioning ring 212 is an annular protrusion to better locate the position of the interface of the bottle head valve 2 and prevent the interface of the bottle head valve 2 from shaking too much. Of course, the positioning ring 212 needs to match the shape of the interface of the bottle head valve 2. A sealing gasket 260 is also provided on the base 210 on this side. In this embodiment, the sealing gasket 260 is annular and located inside the positioning ring 212. When the interface of the bottle head valve 2 is positioned on the positioning ring 212, the sealing gasket 260 can be pressed against the end face of the interface of the bottle head valve 2 to form a sealing fit. A connector 213 that can be connected to an external high-pressure gas source is provided on the other side end surface of the base 210. The connector 213 has threads that match the threaded interface 112 and can form a detachable fit. The external high-pressure gas source here can be a compressed gas source such as an air compressor. A portal support frame 220 is also provided on the base 210. Specifically, the portal support frame 220 is also a metal part, which is integrally connected to the base 210 and can be integrally formed by die casting, casting, etc. The free end of the portal support frame 220 is located on one side of the positioning ring 212 and is directly opposite to the positioning ring 212. A threaded through hole 221 is provided on the end and is coaxial with the positioning ring 212. An adjusting rod 230 is threaded and inserted into the threaded through hole 221. A rotary handle 240 is provided at the outer end of the adjusting rod 230 to facilitate the rotation of the adjusting rod 230. A pressure head 250 is provided at the inner end of the adjusting rod 230 and is adapted to the opening of the bottle head valve 2. The inside of the diving cylinder 1 is conducted through the one-way valve pressed against the opening of the bottle head valve 2. During use, when the adjusting rod 230 is rotated, the pressure head 250 extends and moves forward and can press against the opening of the bottle head valve 2, so that the gas from the external high-pressure gas source can inflate the diving cylinder 1 through the connecting head 213, the gas channel 211 and the bottle head valve 2; after the inflation is completed, the external high-pressure gas source and the bottle head valve 2 are closed in turn, the pressure measuring component 100 is installed on the connecting head 213, and then the bottle head valve 2 is opened, and the internal pressure of the diving cylinder 1 is observed by the pressure gauge 120. After the pressure measurement is completed, the bottle head valve 2 is closed, and then the air release valve 113 is opened, and the pressure measuring component 100 can be safely removed.

[0026] The device adopts a detachable connection design of the pressure measuring component 100 and the inflation component 200, so that the split structure of the entire device is relatively simple, and the split occupies a small space and is easy to carry. Overall, it is convenient and flexible to operate and use.

[0027] In some embodiments, in order to reduce the shaking of the pressure head 250 of the adjusting rod 230 when moving and shorten the service life of the one-way valve at the opening of the bottle head valve 2, the following structure is adopted: Figure 5As shown, the end of the gantry support frame 220 is also provided with a circular guide hole 222 coaxially arranged with the threaded through hole 221, the guide hole 222 is located outside the threaded through hole 221, and the diameter of the guide hole 222 is larger than the threaded through hole 221; correspondingly, the adjustment rod 230 is provided with an optical axis section 231 adapted to the guide hole 222, and within the entire adjustment stroke of the adjustment rod 230, the optical axis section 231 of the adjustment rod 230 always forms a clearance guide fit with the guide hole 222, so that during the adjustment process of the adjustment rod 230, the shaking of the pressure head 250 can be greatly reduced. Here, the thread of the threaded through hole 221 is preferably a fine pitch thread, which can not only improve the movement adjustment accuracy of the adjustment rod 230, but also further reduce the shaking of the pressure head 250.

[0028] In addition, a chamfer 222a is provided at the opening of the outer side of the guide hole 222 to facilitate the adjustment rod 230 to be inserted into the guide hole 222 during assembly.

[0029] In some other embodiments, the pressure measuring component 100 may also adopt another structure, as shown in FIG. Figure 6 As shown, the tube body 110 is also provided with an air inlet interface 130 connected to the cavity 111. The air inlet interface 130 can be selectively connected to a high-pressure gas source and a plug 140. The plug 140 can be flexibly connected to the tube body 110 by means of a belt or a rope, etc., and is used to temporarily close the air inlet interface 130. When the device is used, the pressure measuring component 100 and the inflation component 200 are first connected, and the air inlet interface 130 is connected to the high-pressure gas source. During the inflation process, the air pressure in the diving cylinder 1 can be monitored in real time through the pressure gauge 120. After inflation to the specified air pressure, the high-pressure gas source and the bottle head valve 2 are closed in turn, and then the air relief valve 113 is opened until there is no air pressure. Finally, the device is disassembled to complete the inflation and inflation pressure monitoring of the diving cylinder 1.

[0030] The above embodiments of the utility model are merely examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. A combined gas pressure measuring and inflating device, characterized in that: The invention comprises a pressure measuring component (100) and a detachably connected inflation component (200), wherein the inflation component (200) inflates a diving cylinder (1) through a cylinder head valve (2); the pressure measuring component (100) comprises a tube body (110), wherein the tube body (110) has a cavity (111) for containing gas, wherein one end of the tube body (110) is provided with a threaded interface (112) communicating with the cavity (111), and the other end is provided with an air release valve (113) for releasing the pressure in the cavity (111); and a pressure gauge (120) for detecting the inside of the cavity (111) is provided on the tube body (110); The inflatable component (200) comprises a base (210), the base (210) is provided with air passages (211) passing through on both sides, the base (210) located on one side of the air passage (211) is provided with a positioning ring (212) for positioning the interface of the bottle head valve (2), and the base (210) on the other side is provided with a connector (213) that can be connected to an external high-pressure air source, and the connector (213) has a thread that matches the threaded interface (112); the base (210) is also provided with a portal support frame (220), and the portal support frame (220) is provided with a positioning ring (212) for positioning the interface of the bottle head valve (2). A threaded through hole (221) is provided facing the positioning ring (212) and coaxially arranged therewith, an adjusting rod (230) is connected to and penetrates the threaded through hole (221), a rotating handle (240) is provided at the outer end of the adjusting rod (230), and a pressure head (250) adapted to the opening of the bottle head valve (2) is provided at the inner end; when the adjusting rod (230) is rotated, the pressure head (250) can press against the opening of the bottle head valve (2), so that gas from an external high-pressure gas source can be inflated into the diving gas cylinder (1) through the connecting head (213), the gas channel (211) and the bottle head valve (2).

2. A combined gas pressure measuring and inflating device according to claim 1, characterized in that: The portal support frame (220) is also provided with a guide hole (222) coaxially arranged with the threaded through hole (221); the guide hole (222) is located outside the threaded through hole (221), and the diameter of the guide hole (222) is larger than that of the threaded through hole (221); and the adjustment rod (230) is provided with an optical axis section (231) adapted to the guide hole (222).

3. A combined gas pressure measuring and inflating device according to claim 2, characterized in that: A chamfer (222a) is provided at the opening outside the guide hole (222).

4. A combined gas pressure measuring and inflating device according to claim 3, characterized in that: The thread of the threaded through hole (221) is a fine pitch thread.

5. A combined gas pressure measuring and inflating device according to claim 4, characterized in that: A sealing gasket (260) is also provided on the base (210) on one side of the positioning ring (212), and the sealing gasket (260) can be fitted with the interface end surface of the bottle head valve (2).

6. A combined gas pressure measuring and inflating device according to any one of claims 1 to 5, characterized in that: The tube body (110) is also provided with an air inlet interface (130) in communication with the cavity (111), and the air inlet interface (130) can be selectively connected to a high-pressure air source and a plug (140).

Images