CN202100777U

CN202100777U - One-way valve

Info

Publication number: CN202100777U
Application number: CN201020507014XU
Authority: CN
Inventors: 魏明伦; 赵宝珠
Original assignee: NATIONAL YUNNAN MACHINE THREE FACTORY
Current assignee: NATIONAL YUNNAN MACHINE THREE FACTORY
Priority date: 2010-08-27
Filing date: 2010-08-27
Publication date: 2012-01-04
Anticipated expiration: 2020-08-27

Abstract

The utility model provides a one-way valve, which comprises a stop core pin (1), a spherical valve core (2), a one-way valve seat (3), an air inlet port (4) and an air cavity (5). The stop core pin (1) and the one-way valve seat (3) are machined by metal material such as copper, aluminum, stainless steel and the like. The left end of the one-way valve seat (3) is longitudinally equipped with a pin hole and the stop core pin (1) is inserted into the pin hole. The one-way valve seat (3) is transversely equipped with the passage air cavity (5) and the spherical valve core (2) is arranged inside the air cavity (5). The spherical valve core (2) is machined by metal material such as copper, aluminum, stainless steel and the like or ceramic material. The one-way valve is capable of working when the micro-pressure difference reaches 0.05 Mpa. The one-way valve can resist the high temperature of 700 DEG C or more with fire flames and is corrosion resistant.

Description

One-way valve

Technical field

The utility model relates to one-way valve, especially is with flame, high temperature fluid one-way valve.

Background technique

At present, various one-way valve has been arranged, like the valve inside of bicycle, automobile, adjustable reduction valve etc. on the market.The pressure that it is the valve body inlet end that all these valves have a common characteristic must promptly will have bigger pressure reduction greater than the pressure of the valve body the other end, and Sealing is generally materials such as rubber, and temperature resistant range is limited, more is not suitable for the gas of band flame.During some special requirement, can not satisfy performance requirement, have much room for improvement.

Summary of the invention

The purpose of the utility model is for a kind of minute-pressure difference 0.05MP that reaches is provided _aJust can work, can be high temperature resistant more than 700 ℃, band flame gas, corrosion resistant one-way valve.

The technological scheme that realizes above-mentioned purpose is following:

One-way valve comprises only core pin, spherical valve core, unidirectional valve seat, air inlet port, air cavity; Unidirectional valve seat is with copper or aluminium or iron or stainless steel and other metal materials processing, and unidirectional valve seat left end vertically has a pin-and-hole, ends the core pin and inserts pin-and-hole, and unidirectional valve seat laterally has the passage air cavity, and spherical valve core is positioned in the air cavity.Only core pin, spherical valve core are selected copper or aluminium or iron or stainless steel and other metal materials processing for use, and spherical valve core also can be selected pottery processing for use.Air cavity is cylindrical, ends core pin and air cavity and intersects vertically, and the air inlet port of air cavity is taper, and spherical valve core is that the conical surface contacts with the air inlet port; Reach back closed gas when ending, end the core pin and insert in the pin-and-hole, can not jump out unidirectional valve seat when guaranteeing spherical valve core at ordinary times with air inlet from unidirectional valve seat top; When gas when the air inlet port of one-way valve gets into valve seat, spherical valve core is pushed away in valve body, make gas-entered passageway unimpeded; After spherical valve core moves certain distance, end the core pin it is stopped, guarantee that spherical valve core can not break away from valve body; When outlet side pressure during greater than inlet end, under the effect of reflux gas, spherical valve core is shifted to inlet end; And contact with inlet end prostomum face, with confined gas, play the effect of unidirectional conducting well.Can be according to throughput requirement amplification or the size of dwindling one-way valve, the profile of unidirectional valve seat can be made the band outside thread, becomes the diameter step shape.

Promptly can be made into one-way valve according to such scheme, spherical valve core, unidirectional valve seat are selected copper, aluminium, stainless steel and other metal materials processing for use, and it is little, high temperature resistant more than 700 ℃ to be mainly used in pressure reduction, the one-way valve of band flame gas, corrosion resistant operational site.

Description of drawings

Sectional view when Fig. 1 is the one-way valve unlatching;

Sectional view when Fig. 2 is closed check valve.

Embodiment

Below in conjunction with accompanying drawing, as an example scheme is specified.

With reference to Fig. 1,2, with the unidirectional valve seat 3 of copper or aluminium or iron or stainless steel metal materials processing check valve body, unidirectional valve seat 3 left ends vertically are provided with a pin-and-hole; End core pin 1 and insert pin-and-hole, unidirectional valve seat 3 laterally has air cavity 5, and spherical valve core 2 is positioned in the air cavity 5; Air cavity 5 is cylindrical; End core pin 1 and intersect vertically with air cavity 5, the air inlet port 4 of air cavity 5 is taper, and spherical valve core 2 contacts for the conical surface with air inlet port 4; End core pin 1 and process for copper or aluminium or iron or stainless steel metal materials processing, spherical valve core 2 processes for copper or aluminium or iron or stainless steel metal material or pottery.

During work, the air-flow above 700 ℃ of band flame flows into air cavitys 5 fast from air inlet port 4, and air-flow advances spherical valve core 2 in air cavity 5, make gas-entered passageway unimpeded; After spherical valve core 2 moves certain distance, end core pin 1 spherical valve core 2 is stopped, guarantee that spherical valve core 2 can not break away from air cavity 5; When outlet side pressure during greater than inlet end, under the effect of reflux gas, spherical valve core 2 is shifted to air inlet port 4; And contact with air cavity 5 conical surfaces, with confined gas, play the effect of unidirectional conducting well.

The size of one-way valve can require to amplify or dwindle according to throughput, and the profile of unidirectional valve seat can be made the band outside thread, becomes the diameter step shape.

Claims

1. one-way valve comprises only core pin (1), spherical valve core (2), unidirectional valve seat (3), air inlet port (4), air cavity (5); It is characterized in that unidirectional valve seat (3) with copper or aluminium or iron or stainless steel processing, unidirectional valve seat (3) left end vertically has a pin-and-hole, ends core pin (1) and inserts pin-and-hole, and unidirectional valve seat (3) laterally has passage air cavity (5), and spherical valve core (2) is positioned in the air cavity (5).

2. according to the said one-way valve of claim 1, it is characterized in that only core pin (1), spherical valve core (2) are selected copper or aluminium or iron or stainless steel processing for use.

3. according to the said one-way valve of claim 1, it is characterized in that spherical valve core (2) selects pottery processing for use.

4. according to the said one-way valve of claim 1, it is characterized in that air cavity (5) is for cylindrical.

5. according to the said one-way valve of claim 1, it is characterized in that only core pin (1) intersects vertically with air cavity (5).

6. according to claim 1 or 5 said one-way valves, it is characterized in that the air inlet port (4) of air cavity (5) is taper, spherical valve core (2) contacts for the conical surface with air inlet port (4).

7. according to the said one-way valve of claim 1, it is characterized in that the profile of unidirectional valve seat (3) can be made the band outside thread, become the diameter step shape.