CN103032582A - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
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- CN103032582A CN103032582A CN 201310000766 CN201310000766A CN103032582A CN 103032582 A CN103032582 A CN 103032582A CN 201310000766 CN201310000766 CN 201310000766 CN 201310000766 A CN201310000766 A CN 201310000766A CN 103032582 A CN103032582 A CN 103032582A
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Abstract
The invention relates to a pressure reducing valve, which comprises an air inlet, an air outlet, a pressure regulation mechanism, a valve body, an air port and a safety valve, wherein the air inlet and the air outlet are arranged on two sides of the valve body, and an inner cavity 1, an inner cavity 2 and an inner cavity 3 which are mutually communicated are formed in the valve body; the inner cavity 1 is communicated with the air inlet, and the inner cavity 3 is communicated with the air outlet; the air port is arranged between the inner cavity 1 and the inner cavity 2, and the inner cavity 1 is communicated with the inner cavity 2 through a plurality of holes; and the safety valve is arranged on the valve body and is communicated with the inner cavity 2. The pressure reducing valve has the advantages of simple structure, stable pressure, light weight, convenience for regulation and installation and the like. When the flow of air bottle or pipeline outlets is changed, the stable output pressure can be kept through pressure reduction and regulation by the pressure reducing valve. During work, the pressure is reduced by balancing the throttling action at the air port, and the output pressure is stabilized through the overflow action of the safety valve and the opening change of the air port.
Description
Technical field
The present invention relates to a kind of reduction valve.
Background technique
In the every profession and trades such as metallurgy, boats and ships, building, all extensively use welding, cutting, so inevitably can use gas cylinder or gas pipeline, and gas cylinder or ducted overpressure, use when being not suitable for work, so must reduce pressure through the device of decompression pressure regulation, to reach the needed pressure of normal use.The function that reduction valve not only has a decompression also has the effect of voltage stabilizing, and when gas cylinder or pipe outlet flow changed, the decompression pressure regulation through reduction valve can both keep stable delivery pressure.
Summary of the invention
The present invention for overcome the above problems provide a kind of simple in structure, safe and reliable, cost of production is low, the reduction valve of long service life.
Technological scheme of the present invention is: described reduction valve comprises suction port, air outlet, pressure regulating mechanism, valve body, ventilating hole and safety valve, described suction port and air outlet are arranged on the valve body both sides, be provided with three inner chambers that are interconnected, inner chamber two, inner chamber three in the described valve body, described inner chamber one communicates with suction port, described inner chamber three communicates with the air outlet, described ventilating hole is arranged between inner chamber one and the inner chamber two, communicate by some holes between described inner chamber one and the inner chamber two, described safety valve is arranged on the valve body and with inner chamber two and communicates.
Described suction port place is provided with filter core, and described suction port and air outlet arrange respectively high pressure gauge and low-pressure meter.
Described pressure regulating mechanism is arranged in the valve body, described pressure regulating mechanism comprises screw rod, Regulation spring, spring cushion block, diaphragm, push rod, valve and shutter spring, described screw rod is arranged on the valve body top, and the screw rod bottom connects Regulation spring, spring cushion block, diaphragm, push rod, valve and shutter spring successively.
The present invention has simple in structure, pressure stability, lightweight, regulate the advantages such as easy for installation, when gas cylinder or pipe outlet flow change, through the decompression pressure regulation of reduction valve, can both keep stable delivery pressure, during work, by the throttling action decompression at balance ventilating hole place, the aperture vary stable delivery pressure of the overflow effect of safety valve and ventilating hole.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 be among Fig. 1 K to structural representation.
Fig. 3 is Z-Z structural representation among Fig. 2.
1 is screw rod among the figure, the 2nd, and Regulation spring, the 3rd, spring cushion block, the 4th, diaphragm, the 5th, valve body, the 6th, filter core, the 7th, valve, the 8th, high pressure gauge, the 9th, shutter spring, the 10th, low-pressure meter, the 11st, push rod, the 12nd, hole, the 13rd, suction port, the 14th, air outlet, the 15th, inner chamber one, 16th, inner chamber two, the 17th, inner chamber three, 18th, safety valve, the 19th, ventilating hole.
Embodiment
A kind of reduction valve, described reduction valve comprises suction port 13, air outlet 14, pressure regulating mechanism, valve body 5, ventilating hole 19 and safety valve 18, described suction port 13 and air outlet 14 are arranged on valve body 5 both sides, be provided with three inner chambers that are interconnected 1 in the described valve body 5, inner chamber 2 16, inner chamber 3 17, described inner chamber 1 communicates with suction port 13, described inner chamber 3 17 communicates with air outlet 14, described ventilating hole 19 is arranged between inner chamber 1 and the inner chamber 2 16, communicate by some holes 12 between described inner chamber 1 and the inner chamber 2 16, described safety valve 18 is arranged on the valve body 5 and with inner chamber 2 16 and communicates, described suction port 13 places are provided with filter core 6, described suction port 13 and air outlet 14 arrange respectively high pressure gauge 8 and low-pressure meter 10, described pressure regulating mechanism is arranged in the valve body 5, described pressure regulating mechanism comprises screw rod 1, Regulation spring 2, spring cushion block 3, diaphragm 4, push rod 11, valve 7 and shutter spring 9, described screw rod 1 is arranged on valve body 5 tops, and screw rod 1 bottom connects Regulation spring 2 successively, spring cushion block 3, diaphragm 4, push rod 11, valve 7 and shutter spring 9.
Open
When correct reduction valve is installed on gas cylinder or the gas pipeline after, open the switch valve of gas cylinder or pipeline after, clockwise rotate adjusting screw rod 1, compression adjustment spring 2, driving spring cushion block 3, diaphragm 4 and push rod 11, thereby valve 7 is lifted off a seat.Pressurized gas enter reduction valve from suction port 13, after filter core 6 filters, enter inner chamber 1 by the inclined hole on the valve body 5, then through entering inner chamber 2 16 diffusion decompressions behind ventilating hole 19 and the some holes 12, finally by inner chamber 3 17 14 outflows from the air outlet, the pressure of inner chamber 1 and inner chamber 3 17 is respectively by high pressure gauge 8 and low-pressure meter 10 indications.
Regulate and work
Post-decompression pressure is regulated by rotating adjusting screw rod 1, mainly be to change the pressure that Regulation spring 2 produces, via spring cushion block 3, push rod 11, valve 7, the Flow-rate adjustment effect at balance ventilating hole 19 places, cause below the diaphragm 4 gas pressure of balance with it to change the working pressure that reaches required, the switch valve that can open on the equipment of reduction valve back this moment carries out work, safety valve 18 is to safeguard the pressure relief device of reduction valve safe handling and the telltale that reduction valve breaks down, when delivery pressure because the valve sealing gasket, when valve seat damage or other reasons rise to 1.3 times to 2 times that surpass maximum delivery pressure voluntarily, safety valve can be opened exhaust automatically, then can autoshutdown when pressure decreased arrives allowable value.Combustion gas class reduction valve does not arrange safety valve by standard.
Close
Work when complete as long as entirely unclamp adjusting screw rod 1, valve 7 is under the effect of pressurized gas active force and shutter spring 9, and ventilating hole 19 can be closed sealing.
Placement of the present invention can as being threaded among the figure, also can be replaced with flange connection, bayonet socket connection etc. as requested.Each of reduction valve grade spring only uses in certain outlet pressure scope, goes beyond the scope and should change spring, can require to select applicable spring according to working pressure.
Claims (3)
1. reduction valve, it is characterized in that: described reduction valve comprises suction port, the air outlet, pressure regulating mechanism, valve body, ventilating hole and safety valve, described suction port and air outlet are arranged on the valve body both sides, be provided with three inner chambers that are interconnected in the described valve body, inner chamber two, inner chamber three, described inner chamber one communicates with suction port, described inner chamber three communicates with the air outlet, described ventilating hole is arranged between inner chamber one and the inner chamber two, communicate by some holes between described inner chamber one and the inner chamber two, described safety valve is arranged on the valve body and with inner chamber two and communicates.
2. a kind of reduction valve according to claim 1, it is characterized in that: described suction port place is provided with filter core, and described suction port and air outlet arrange respectively high pressure gauge and low-pressure meter.
3. a kind of reduction valve according to claim 1, it is characterized in that: described pressure regulating mechanism is arranged in the valve body, described pressure regulating mechanism comprises screw rod, Regulation spring, spring cushion block, diaphragm, push rod, valve and shutter spring, described screw rod is arranged on the valve body top, and the screw rod bottom connects Regulation spring, spring cushion block, diaphragm, push rod, valve and shutter spring successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310000766 CN103032582A (en) | 2013-01-04 | 2013-01-04 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310000766 CN103032582A (en) | 2013-01-04 | 2013-01-04 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103032582A true CN103032582A (en) | 2013-04-10 |
Family
ID=48019804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310000766 Pending CN103032582A (en) | 2013-01-04 | 2013-01-04 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435123A (en) * | 2022-07-15 | 2022-12-06 | 宁波隆兴焊割科技股份有限公司 | High-pressure reducer with adjustable exhaust flow |
-
2013
- 2013-01-04 CN CN 201310000766 patent/CN103032582A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435123A (en) * | 2022-07-15 | 2022-12-06 | 宁波隆兴焊割科技股份有限公司 | High-pressure reducer with adjustable exhaust flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |