CN2482620Y

CN2482620Y - Fast gas pipe joint with one-way valve

Info

Publication number: CN2482620Y
Application number: CN 01225056
Authority: CN
Inventors: 李忠芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-01
Filing date: 2001-06-01
Publication date: 2002-03-20
Anticipated expiration: 2011-06-01

Abstract

The utility model relates to a fast tube joint for gas with a single-direction valve, and the fast tube joint consists of a hard tube joint, a medium tube seat, a flexible joint and a single-direction valve; the inner hole of a big end of the hard tube joint matches with the outer circle of the medium tube seat in the sealing way, the medium tube seat is connected with the big end of the hard tube joint, the periphery is sleeved with a ring sleeve. The single-direction valve is arranged in the inner hole of the medium tube seat. An arc surface provided at the front cylinder of the valve core of the single-direction valve matches with the arc surface cone valve hole of the inner hole of the hard tube joint, and is sealed by an O-shaped ring arranged at a cylinder circle groove. A hollow joint tube provided at the other end of the medium tube seat is flexibly and firmly matched with the inner hole of the flexible tube joint sleeved on the external circle of the hollow joint tube. The utility model realizes fast connection with a gas pipe joint, and has the advantages of sound sealing, durability and safety use.

Description

The combustion gas quick coupling that one-way valve is arranged

The utility model relates to the valve of gas pipeline accessory, specifically a kind of combustion gas quick coupling that one-way valve is arranged.

China's natural gas reserves are abundant, and along with the economic construction development, gas production is increasing, and it extensively replaces fire coal, oil to be used for industry, automobile as a kind of clean energy resource, and in the heating field and the cooking field enter family.The product that present application rock gas is the energy has also just been developed sub-fraction, in the today of being becoming tight electric power, coal, petroleum-based energy day, the use that enlarges this cleaning of rock gas, the cheap energy has far-reaching social benefit and economic benefit, and this just at first needs to develop new natural gas pipe accessory.The gas kitchen pipe joint of Xiao Shouing has following shortcoming in the market: the one, can not connect fast; The 2nd, sealability is bad; The 3rd, durable in use inadequately, working life is short.Therefore be badly in need of improving.

The purpose of this utility model provides a kind of improved combustion gas quick coupling that one-way valve is arranged.It can be connected fast with the gas pipeline joint, and good seal performance is durable in use, safe in utilization.

The purpose of this utility model is achieved in that

A kind of combustion gas quick coupling that one-way valve is arranged is characterized in that: it mainly is made up of hard pipe joint, middle base, hose coupling, one-way valve; Hard pipe joint is one the pipe body of ladder cylindrical and ladder endoporus to be arranged, when having for connection, realizes its small end cylindrical the bulge loop of sealing, this small end endoporus has cambered surface taper valve port, the cylindrical of its big end endoporus and middle base matches, seal with seal ring between its fitting surface, the annular boss lower edge of base and the end face upper edge of the big end of hard pipe joint join in being somebody's turn to do, its peripheral suit one annular cover, this annular be with upper and lower inside flanging buckle in base annular boss upper edge and the corresponding terrace of hard pipe joint cylindrical and middle base and hard pipe joint are fixed together; Should in the endoporus of middle base the one-way valve of being made up of pressure spring and spool be housed, the front end cylinder of this spool has the cambered surface taper valve port in cambered surface and the hard pipe joint endoporus to match, and by the seal ring sealing that is contained in the cylinder annular groove; This spool middle part has the ventilation window to communicate with middle base inner chamber, this spool rear end be contained in Returnning spring in the middle base inner chamber and join and keep normal closed state valve port; Should elongated hollow adaptor tube be arranged other end of middle base, the bulge loop of this adaptor tube cylindrical becomes resilient tight fit with the hose coupling endoporus that is set in its cylindrical, and the outer rounded ends of this hose coupling has bulge loop for connection.

In the annular groove outside at described hose coupling middle part, be embedded with the metal collar of tape spool to stupefied line.

The material of described hard pipe joint, middle base and spool is fire-retardant nylon or polyoxymethylene; The material of described hose coupling is a nitrile rubber; The material of described seal ring is a chlorohydrin rubber.

The utility model has following actively useful effect:

1. this pipe joint is provided with non-return one-way valve, and the combustion gas one-way flow is safe in utilization.

2. this pipe joint two ends are respectively hard pipe joint and hose coupling combination, and are easy to use.Can realize being connected with the quick of gas pipeline.

3. the mating face of each assembly of this pipe joint is provided with a plurality of seal rings, good seal performance, and long-term the use can not leaked combustion gas yet.

4. the material of each assembly in this pipe joint has flame retardant property, and fire retardancy is good, strong, safe and reliable, the long service life of durable in use, anti-collapsing force.

Now in conjunction with the accompanying drawings:

Fig. 1 is the utility model one embodiment's a construction profile schematic representation; Fig. 2 is the whole-cutaway view of facing of Fig. 1, and is the schematic representation of show internal structure; Fig. 3 is the structural representation that protects plug supporting with packing of the present utility model; Fig. 4 is the assembly exploded view of Fig. 2; Fig. 5 is the structural representation of hard pipe joint among Fig. 2; Fig. 6 is the worm's eye view of Fig. 5; Fig. 7 is the structural representation of one-way valve spool among Fig. 2; Fig. 8 is the worm's eye view of Fig. 7; Fig. 9 is the structural representation of middle base among Fig. 2; Figure 10 is the plan view of Fig. 9; Figure 11 is the structural representation of hard pipe joint among Fig. 2; Figure 12 is the structural representation of seal ring among Fig. 2; Figure 13 is the worm's eye view of Figure 12; Figure 14 is the structural representation of the metal collar among Fig. 2; Figure 15 is the side view of Figure 14; Figure 16 is the structural representation of annular cover among Fig. 2; Figure 17 is that the utility model has the collapsible tubes joint of fore-set to realize the structural representation that is connected fast with another. accompanying drawing numbers: 1. hard pipe joint 101. bulge loops 102. valve ports 103. large end endoporus (shoulder hole) 2. in the annular groove 303 endoporus 4. check valves 401. spools 402. back-moving springs 403. ventilation windows 5. sealing rings 6. annular covers 7. sealing rings 8. metal collars 801. stupefied lines 9. of the base 201. annular boss 202. ladder endoporus 3. hose couplings 301. end bulge loops 302. dress metal collars protect the plug 901. soft telescopic quick couplings (applying for a patent separately) that fore-set is arranged with 902. collars 10.

Please refer to Fig. 1, Fig. 2, Fig. 4, the utility model is a kind of combustion gas quick coupling that one-way valve is arranged, and it mainly is made up of hard pipe joint 1, middle base 2, hose coupling 3, one-way valve 4; Hard pipe joint 1 (is seen Fig. 5, be one the pipe body of ladder cylindrical and ladder endoporus to be arranged Fig. 6), when having for connection, realizes its small end cylindrical the bulge loop 101 of sealing, this small end endoporus has cambered surface taper valve port 102, its big end endoporus 103 (is seen Fig. 9 with middle base 2, cylindrical Figure 10) matches, seal with seal ring 5 between its fitting surface, the end face upper edge of annular boss 201 lower edges of base 2 and hard pipe joint 1 big end joins in being somebody's turn to do, its peripheral suit one annular cover 6 (seeing Figure 16), this annular is with, the corresponding terrace of cylindrical of the annular boss upper edge of base 2 and hard pipe joint 1 during down inside flanging buckles into and middle base 2 and hard pipe joint 1 are fixed together; Should in the endoporus of middle base 2 one-way valve of being made up of pressure spring 402 and spool 401 (seeing Fig. 7, Fig. 8) 4 be housed, the front end cylinder of this spool 401 has the cambered surface taper valve port 102 in cambered surface and hard pipe joint 1 endoporus to match, and by seal ring 7 (seeing Figure 12, Figure 13) sealing that is contained in the cylinder annular groove; These spool 401 middle parts have ventilation window 403 to communicate with the inner chamber of middle base 2, these spool 401 rear ends be contained in Returnning spring 402 in middle base 2 inner chambers and join and keep normal closed state valve port 102; Should elongated hollow adaptor tube be arranged middle base 2 other ends, the bulge loop 202 of this adaptor tube cylindrical becomes resilient tight fit with the endoporus of the hose coupling 3 that is set in its cylindrical, and the outer rounded ends of this hose coupling 3 (seeing Figure 11) has bulge loop 301 for connection.

In the annular groove outside at described hose coupling 3 middle parts, be embedded with the metal collar 8 (see Figure 14, Figure 15) of tape spool to stupefied line 801.

During enforcement, the material of described hard pipe joint 1, middle base 2 and spool 401 is fire-retardant nylon or polyoxymethylene; The material of described hose coupling 3 is a nitrile rubber; The material of described

seal ring

5,7 is a chlorohydrin rubber.

Be provided with at the opening end of described hose coupling 3 and protect plug 9 and see Fig. 3, this protruding circular ring elasticity of protecting plug is filled in the opening of hose coupling 3, this protect plug with soft with the cylindrical of 901 collar 902 elastic sleeve that connect at hose coupling 3.In this pipe joint dispatches from the factory transportation, storage process, originally protect plug and shield, prevent that filth from entering, will protect plug during use and take out.

Please refer to Figure 17, the utility model can be connected fast with the pipe joint that corresponding joint is arranged, and illustrating this respective tube joint 10 and be one has the collapsible tubes joint of fore-set.

Claims

1. combustion gas quick coupling that one-way valve is arranged, it is characterized in that: it mainly is made up of hard pipe joint (1), middle base (2), hose coupling (3), one-way valve (4); Hard pipe joint (1) is one the pipe body of ladder cylindrical and ladder endoporus to be arranged, when having for connection, realizes its small end cylindrical the bulge loop (101) of sealing, this small end endoporus has cambered surface taper valve port (102), its big end endoporus (103) matches with the cylindrical of middle base (2), seal with seal ring (5) between its fitting surface, the end face upper edge of the big end of annular boss (201) lower edge of base (2) and hard pipe joint (1) joins in being somebody's turn to do, its peripheral suit one annular cover (6), this annular is with, down inside flanging buckles into the corresponding terrace of cylindrical of the annular boss upper edge of middle base (2) and hard pipe joint (1) and middle base (2) and hard pipe joint (1) is fixed together; Should in the endoporus of middle base (2) one-way valve of being made up of pressure spring (402) and spool (401) (4) be housed, the front end cylinder of this spool (401) has the cambered surface taper valve port (102) in cambered surface and hard pipe joint (1) endoporus to match, and by seal ring (7) sealing that is contained in the cylinder annular groove; This spool (401) middle part has ventilation window (403) to communicate with the inner chamber of middle base (2), this spool (401) rear end and be contained in Returnning spring (402) in middle base (2) inner chamber and join and keep normal closed state to valve port (102); Should elongated hollow adaptor tube be arranged other end of middle base (2), the bulge loop of this adaptor tube cylindrical (202) becomes resilient tight fit with the endoporus of the hose coupling that is set in its cylindrical (3), and the outer rounded ends of this hose coupling (3) has bulge loop (301) for connection.

2. the combustion gas quick coupling that one-way valve is arranged as claimed in claim 1 is characterized in that: be embedded with the metal collar (8) of tape spool to stupefied line (801) in the annular groove outside at described hose coupling (3) middle part.

3. the combustion gas quick coupling that one-way valve is arranged as claimed in claim 1 is characterized in that: the material of described hard pipe joint (1), middle base (2) and spool (401) is fire-retardant nylon or polyoxymethylene; The material of described hose coupling (3) is a nitrile rubber; The material of described seal ring (5), (7) is a chlorohydrin rubber.