CN2175857Y

CN2175857Y - Self-pressuring closed gas-cylinder valve

Info

Publication number: CN2175857Y
Application number: CN 93235708
Authority: CN
Inventors: 赵启龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-24
Filing date: 1993-12-24
Publication date: 1994-08-31
Anticipated expiration: 2003-12-24

Abstract

The utility model relates to a self-pressuring closed gas-cylinder valve. The self-pressuring closed gas-cylinder valve can be opened through transmissions of pressure by deformations of an elastic member 10, and can be closed by gas pressure force and spring force. The self-pressuring closed gas-cylinder valve does not generate rotating abrasion, and has a reliable sealing performance. A valve stem and a valve casing are both segmented into two bodies; an inner cavity 15 and a wall opening 16 are provided with a lower valve core rod; a pushing block 8 is sheathed with the rod; a communicating inner cavity and the wall opening 18 are communicated with an outlet 19 via a gap; an upper valve core 21 of the valve core rod is arranged in the inner cavity of an inlet-outlet 20 of the cylinder, and communicates with an opening 19 via a gap 22 between the valve core and a casing wall; meanwhile, a spring 3 which can reset the valve core is sheathed with the valve core rod arranged in the inner cavity of the inlet-outlet 20.

Description

Self-pressuring closed gas-cylinder valve

The utility model relates to the control valve that is contained on the gas cylinder, can close automatically by interior gas pressure and the spring force of bottle, belongs to a kind of from the disconnected cylinder valve of closing the gas outflow of crush-cutting.

At present, liquefied petroleum gas and other inflammable gas all enter huge numbers of families with bottled, become the source of the gas of each tame cooking stove.Gas cylinder is a gas cylinder, on the bottle control valve is arranged.Because control valve is valve rod, valve core structure, poorly sealed gas leakage, the befouling environment of causing wearing and tearing appear and in normal phase use back valve core and valve port and valve rod and sealing part, poison human body, also be a kind of unsafe hidden danger simultaneously, often lead to explosive accident, jeopardize the safety of house and life.

The purpose of this utility model is to avoid deficiency in the above-mentioned prior art, and provide a kind of valve rod merogenesis to promote the close type of the pressure certainly cylinder valve of spool sealing valve port with gas pressure in the bottle and spring force, the closure member wearing and tearing are little, can prolong the spreadable life of closure member, improve sealability.

The purpose of this utility model can reach by the following technical programs: the valve casing merogenesis is last valve casing and the lower valve base valve that is threaded, and valve gap is fixed by bolts on the port of valve casing.And the elastic steel sheet of thinner thickness is housed between the port; The valve rod merogenesis is the operating handle and the valve core rod of band handwheel.The operating handle screw fit is passed valve gap.Valve core rod passes valve seat shell top logical outer inner chamber and cinclides, is with the jacking block of inner chamber between valve core rod upper end and steel disc on the bar, gapped and be communicated with cinclides and be communicated with exporting by inner chamber between jacking block and last valve casing.In the inner chamber that valve core rod upper valve core position is imported and exported, between valve core rod and lower valve base shell the gap that is communicated with inner chamber is arranged in bottle.On valve core rod, be with Returnning spring in the inner chamber of in bottle, importing and exporting.

Between above-mentioned valve core rod and the valve seat shell upper end sealing ring pad and union cap (UC) are arranged.On valve core rod, can be with wear-resisting auxiliary valve core ring on the spool, between ring body and valve seat shell communication gap be arranged also.

The utility model is compared with above-mentioned prior art has following effect: because the valve rod merogenesis is operating handle and valve core rod, with propagation of pressure and elastic force switch, do not have the sealability that the wearing and tearing of rotating can improve valve with Sealing; Simultaneously handwheel retreats spool and valve seat with bottle internal air pressure and spring force closure, and the use gas cylinder is safe and reliable.

Fig. 1 is the utility model complete section diagrammatic sketch;

Fig. 2, the 3rd, I-I on Fig. 1, II-II sectional drawing.

Below in conjunction with accompanying drawing will the utility model is described in further detail:

By shown in Figure 1, the valve that constitutes by handwheel, valve rod, spool, valve casing and valve gap, the utility model is to be last valve casing 9 and the lower valve base shell 5 that is threaded with the valve casing merogenesis, and wherein going up has the air outlet 19 that is communicated with inner chamber on the valve casing, and the air outlet can be connected with other slow pressure valve; The lower valve base shell stretches in the gas cylinder, and inlet, outlet 20 is arranged on it.Valve gap 12 usefulness bolts 11 are fixed on the ring end face of valve casing, between the scrobicular ring shoulder steel disc 10 are housed in valve gap and the ring end face; The valve rod merogenesis is the operating handle 13 and the valve core rod 1 of band handwheel 14; Wherein operating handle 13 screw fit are passed valve gap, can push up mutually with the steel disc contact.Valve core rod 1 passes valve seat shell 5, logical (body of rod) outer inner chamber 15 and cinclides 16 arranged at valve core rod top, valve core rod upper end and 10 of steel discs are with the jacking block 8 of inner chamber on bar, the jacking block inner chamber has external cinclides 18, between jacking block and last valve casing annular space 17 is arranged, the jacking block inner chamber is communicated with air outlet 19 by hole 18, gap 17.Valve core rod upper valve core 21 is that the integral piece position is imported and exported in bottle in 20 the inner chamber, has and inner chamber communication gap 22 between spool 21 and lower valve base shell indent annular wall, is with the spring that can make valve core reset importing and exporting in 20 the inner chamber on valve core rod.

For being equipped with sealing ring pad 6 and collet threaded pressure cap 7 between seal valve core bar 1 and the valve seat shell upper end; For ease of changing, on valve core rod 1, can be with wear-resisting auxiliary valve core ring 4 on the spool 21, between spool ring 4 and annular wall the gap that is communicated with gap 22 is arranged also.Steel disc is the elastic steel sheet of thinner thickness.For valve core rod 1 is installed, the bottom flange 2 that is threaded is arranged at the bottom of valve seat shell 5.

This valve is loaded on the gas cylinder by extracorporeal thread.Resiliently deformable takes place when turning the handwheel 14 operating handles 13 descending steel discs 10 that force, make jacking block 8 valve core rods 1 produce line displacement down, spool 4 breaks away from valve casing seat 5 generation gaps and can be communicated with mouth 20 by gap 22, at this moment since cinclides 16 near spool with moving down and be communicated with, combustion gas can pass through inner chamber 15, cinclides 18, gap 17 and export 19 to be communicated with.Left-handed handwheel 14 operating handles 13 are up during without gas, and steel disc 10 resiles, and valve core rod 1 is up and close under the effect of gas pressure and spring 3.Valve casing 9 is unloaded, by chamber 15 to the gas cylinder aeration.

Claims

1, a kind of from pressing the close type cylinder valve, it has handwheel, valve rod, valve core, valve casing and valve gap, it is characterized in that:

(1) the valve casing merogenesis is last valve casing (9) and the lower valve base shell (5) that is threaded, and valve gap (12) is fixed by bolts on the port of valve casing, and steel disc (10) is housed between the port; The valve rod merogenesis is operating handle (13), the valve core rod (1) of band handwheel (14);

(2) operating handle (13) screw fit is passed valve gap (12);

(3) valve core bar (1) passes valve seat shell (5), and logical outer inner chamber (15) and cinclides (16) are arranged at top; On bar, be with the jacking block (8) of inner chamber between valve core rod upper end and steel disc (10), between jacking block and last valve casing gapped (17) and be communicated with cinclides (18) and be communicated with air outlet (19) by inner chamber, valve core rod upper valve core (21) position is imported and exported in the inner chamber of (20) in bottle, has between spool (21) and lower valve base shell and inner chamber communication gap (22); In the inner chamber of importing and exporting (20), on valve core rod, be with Returnning spring (3).

2, cylinder valve as claimed in claim 1 is characterized in that: between valve core bar (1) and the valve seat shell upper end sealing ring pad (6) and union cap (UC) (7) are arranged.

3, cylinder valve as claimed in claim 1 is characterized in that: spool (21) is gone up and can be with wear-resisting auxiliary valve core ring (4) on valve core rod (1), between ring (4) and valve seat shell communication gap is arranged also.

4, cylinder valve as claimed in claim 1 is characterized in that: steel disc (10) is the spring sheet of thinner thickness.