CN2068629U

CN2068629U - Small oxygen feeder

Info

Publication number: CN2068629U
Application number: CN 90207143
Authority: CN
Inventors: 简履平; 胡鹤馨
Original assignee: SHANGHAI PRESSURE REDUCER FACT
Current assignee: SHANGHAI PRESSURE REDUCER FACT
Priority date: 1990-04-16
Filing date: 1990-04-16
Publication date: 1991-01-02

Abstract

The utility model of a small oxygen feeder which can be used in oxygen feeding for medical purpose and any other apparatus required low-voltage oxygen relates to a transfer valve which consecutively provides a small flow of gas. The utility model is a small device which is formed as an integral by sealing connected of a small air bottle and a reducer. The reducer adopts a structure of the balance of a step piston and a spring force, thus, the reducer not only has a small volume, but also ensures the stable pressure and the constant flow of the output gas. A pressure meter and an inflating connector which are convenient for the inflating to provide a continuous use are also installed on the reducer. The utility model has compact structure, easy use and favorable foreground for popularizing and using.

Description

Small oxygen feeder

The utility model relates to the fluid delivery valve that small flow is provided continuously, particularly medical continuous oxygen supply reduction valve.

The needle value expenditure and pressure oxygen supply that existing portable apparatus of oxygen supply adopts, post-decompression oxygen are pressed with the gas cylinder internal air pressure and are reduced and low, and variable quantity is big, causes that the output flow variable quantity is big.Existing oxygen regulator adopts diaphragm type structure, and volume is big, and can not directly be installed to complete portable apparatus of oxygen supply of formation on the small-sized gas cylinder.

The purpose of this utility model is one of design and the supporting decompressor of small-sized gas cylinder, and forms small-sized apparatus of oxygen supply with it, and confession medical oxygen therapy and other need the usefulness of the utensil of low oxygen.

Decompressor of the present utility model is made up of a valve seat that is connected with gas cylinder and valve gap, and the inner chamber of valve seat is a hyperbaric chamber, and the valve gap inner chamber is a low-pressure cavity.Pressure gauge, switch cock and gas-charging connection are housed on the valve seat; Piston is housed on the valve gap, switch cock and hose coupling, valve gap is tightened on the valve seat with screw thread and fuses.

Accompanying drawing 1 be the A-A of the utility model decompressor to sectional view, Fig. 2 be B-B to sectional view.Fig. 3 is another kind of air-supported structure sectional view.1 is handwheel among the figure, and 2 is regulating valve stem, and 3 is swivel nut, and 4 is O-ring seals, 5 is packing ring, and 6 is filter, and 7 is packing ring, and 8 is valve seat, 9 is pressure gauge, and 10 is helical spring, and 11 is O-ring seals, 12 is valve gap, and 13 is O-ring seals, and 14 is piston, 15 is hose coupling, and 16 is valve rod, and 17 is nut, 18 is sealing gasket, and 19 are the inflation one-way valve, and 20 is gas-charging connection.

The left end of valve seat 8 is a conical pipe pitch thread, in order to be tightly connected mutually with small-sized gas cylinder, a small ultra-thin pressure gauge 9 is installed in the top, seal with polychlorotrifluoroethylene packing ring 7, be separated by with pressure gauge 7 and gas-charging connection 20 or one-way valve 19 be installed on 120 ° the position, the switch cock of band handwheel 1, valve rod 2, swivel nut 3 and seal ring 4, packing ring 5 is housed on 120 ° position again, and valve base cavity all has the duct to be connected.Valve gap 12 and valve seat 8 usefulness are threaded, the piston 14 of one stepped shaft is installed at inner chamber, twice O-ring seals 11 and 13 are installed on the piston 14, a polychlorotrifluoroethylene sealing gasket is equipped with in the end, in order to block the high-pressure channel on the valve seat 8, at piston and valve base chamber helical spring 10 is housed, hose coupling 15 is equipped with in the top of valve gap 12, in order to the output low oxygen, the right-hand member of valve gap 12 is the switch cock of the valve rod 16 of a band conical seal (contact) face.

Fig. 3 is another kind of air-supported structure schematic representation, and the oxygen that charges into footpath aperture enters into the high-pressure channel by switch cock control, enters into oxygen cylinder again, can make structure compact more like this, simplifies.

Pressure in the gas cylinder can reach 15MPa, pressurized gas enter hyperbaric chamber through behind the filter 6, pressure gauge 9 is indicated the pressure in the gas cylinder all the time, behind rotation hand wheel 1, pressurized gas enter valve seat, diffuse into the low-pressure cavity that enters after the low pressure on the valve gap 12 by the throttle clearance between the sealing gasket on valve seat and the piston 14, form post-decompression steady pressure.The size of the decompression pressure that this is stable depends on the size of the power of the diameter at two O shapes circle, 11,13 places on the piston 14 and spring 10.During beginning, the gas promotion piston 14 that is come by valve seat moves to right, and when gas is full of low-pressure cavity, because the pressure on piston the right is pushed piston to left greater than the pressure and the spring tension sum on the piston left side, piston is on the equilibrium position all the time.Promptly rotate the handwheel of right-hand member switch cock if oxygen supply this moment, and low-pressure gas i.e. mitre velve by valve rod 16 and lid 12 transfers to nasal oxygen tube by hose coupling 15 and supplies with patient.After the gas consumption, available gas-charging connection is inflated the back that is threaded on big oxygen bottle and gas charging valve 19 or the gas-charging connection 20 after filtering by big oxygen bottle to little oxygen bottle in the oxygen bottle.

The small-sized apparatus of oxygen supply of the utility model, newly-designed decompressor is directly installed on the small-sized gas cylinder, become an integral structure, be convenient to use in various mobile occasions, decompressor adopts the step piston structure, has dwindled its volume greatly, and the pressure stability that can keep the outlet port, constant flow, this characteristic are that existing apparatus of oxygen supply can't be realized, the good prospect of promoting the use of is arranged.

Claims

1, a kind of small-sized apparatus of oxygen supply, it is tightly connected by a decompressor and small-sized gas cylinder and forms, and decompressor is made up of valve seat and valve gap, it is characterized in that being equipped with on the valve seat pressure gauge, switch cock and gas-charging connection; Piston is housed, switch cock and hose coupling on the valve gap; The inner chamber of valve seat is a hyperbaric chamber, and the inner chamber of valve gap is a low-pressure cavity, and valve gap is tightened on the valve seat with screw thread and fuses.

2, according to the said small-sized apparatus of oxygen supply of claim 1, it is characterized in that the piston on the valve gap is a step piston, twice O RunddichtringO is housed on the piston, pistons end is equipped with sealing gasket, at piston and valve base chamber helical spring is housed.

3,, it is characterized in that the switch cock on the valve gap is the valve rod of a band conical seal (contact) face and the mitre velve that the conical seal (contact) face on the valve gap is formed according to claim 1,2 said small-sized apparatuss of oxygen supply.