CN2171130Y

CN2171130Y - Controller for gas flow

Info

Publication number: CN2171130Y
Application number: CN 93241193
Authority: CN
Inventors: 李明泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-05
Filing date: 1993-10-05
Publication date: 1994-07-06
Anticipated expiration: 2003-10-05

Abstract

The utility model relates to a gas flow controller which is provided with a base body. One side of the base body is provided with an input port, the other end is provided with an outlet port, and the lower end of the base body is covered with a lower cover. A diaphragm above which a decompression chamber is formed is arranged between the base body and the lower cover, and the decompression chamber is communicated with the outlet port. A groove chamber which is communicated with the space between the decompression chamber and the input port is arranged in the base body, and a blocking body is arranged in the groove chamber. When a gas pipe is broken, the blocking body can be adsorbed to block a gas passage which is communicated with the decompression chamber to avoid the continuous gas leakage at the input port, so that the use safety is improved.

Description

Controller for gas flow

The utility model relates to a kind of gas flow controller, particularly relates to a kind of gas flow controller that is applicable to gas passage.

Gas tank commonly used in the general family, when becoming gas coal gas because of the liquid coal gas in the gas tank, to produce a high pressure, can steadily export in use for making gases at high pressure, the delivery outlet of gas tank of being everlasting is bonded on a gas flow controller, as shown in Figure 1, it is the cut-open view of known gas flow controller, gas flow controller 1 has a body 11, one side of body 11 offers an input pipe 12, opposite side then offers an output mouth of pipe 13, and the inside of body 11 is installed with a diaphragm 14, and below diaphragm 14, form a decompression chamber 15, installed a spring 16 simultaneously in the upper end of diaphragm 14, the other end of spring 16 is butted on the lower end of the adjustment button 17 that is installed in body 11 tops, and by adjusting compressing of button 17, and make spring 16 compress diaphragm 14, and then the depression bar 141 of diaphragm 14 belows is located in compacting, and make the closure elements 142 of being located at depression bar 141 1 ends, can press on the endpiece of the input mouth of pipe 12 in good time, so that the pressure of importing the gases at high pressure of the mouth of pipe 12 must be greater than the press power of closure elements 142, beginning can enter decompression chamber 15, relend the existence of the volume space that helps decompression chamber 15, reach the effect of decompression, steadily export for use by the output mouth of pipe 13 more at last; Yet, if the phenomenon of gas leakage when taking place in the output mouth of pipe 13 of gas flow controller 1 or body 11, body 11 will be less than the gaseous tension of the input mouth of pipe 12 with the gaseous tension of the output mouth of pipe 13, so, its closure elements 142 will continue to be transfused to the atmospheric pressure passing of the mouth of pipe 12, and enter decompression chamber 15, thereby the output mouth of pipe 13 will continue gas leakage, if therefore gases at high pressure are an inflammable gas, then when body 11 or the output mouth of pipe 13 when the phenomenon of gas leakage is arranged, gas flow controller 1 can't be discovered, and the shortcoming of easy breaking out of fire and poisoning is also arranged simultaneously, so it is dangerous in the use.

Fundamental purpose of the present utility model is providing a kind of gas flow controller safe to use.

For achieving the above object, the utility model provides a kind of gas flow controller, gas flow controller has a pedestal, one side of pedestal offers an input port, opposite side then offers a delivery outlet, and be covered with a lower cover in the lower end of pedestal, and between pedestal and lower cover, be provided with a diaphragm, diaphragm and pedestal form a decompression chamber, and the decompression chamber is communicated with delivery outlet, and linking in the upper end of diaphragm simultaneously has a depression bar, one side of depression bar is provided with a closure elements, lower end snail in lower cover is provided with an adjustment button in addition, adjusts button and is provided with a spring, and spring can compress diaphragm; It is characterized in that: offer a groove chamber in the pedestal, one side of groove chamber offers a duct, duct one end is communicated with the input port, the other end is communicated with the groove chamber, the opposite side of groove chamber offers a passage, passage is communicated with the decompression chamber, and offers a through hole in the upper end of groove chamber, and installs one and can be adsorbed and be jammed in obturator on the passage in groove is indoor; The top of pedestal has screwed togather a hollow cylinder, is provided with a bar that hits moving up and down in the hollow cylinder, and the top of hitting bar is installed with a control handle, hits and is arranged with a flexible member on the bar.

Below by most preferred embodiment and accompanying drawing gas flow controller of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the cut-open view of known gas flow controller.

Fig. 2 is the cut-open view of the utility model preferred embodiment.

Fig. 3 is the user mode figure of the utility model one preferred embodiment.

See also Fig. 2, it is the cut-open view of the utility model preferred embodiment, gas flow controller 2 has a pedestal 3, one side of pedestal 3 offers an input port 32, opposite side then offers a delivery outlet 33, and is covered with a lower cover 4 in the lower end of pedestal 3, and is provided with a diaphragm 30 between pedestal 3 and lower cover 4, diaphragm 30 forms a decompression chamber 31 with pedestal 3, and decompression chamber 31 is communicated with delivery outlet 33; Simultaneously offer a groove chamber 34 in pedestal 3, a side of groove chamber 34 offers a duct 341, and duct 341 1 ends are communicated with input port 32, and the other end is flowed out by duct 341 to prevent gas then with an envelope seat 342 sealings; And the side in groove chamber 34 offers a passage 35, passage 35 is communicated with decompression chamber 31, and the groove chamber 34 built-in obturators 343 that are provided with, obturator 343 can be adsorbed in good time and be closed on the passway 351 of 34 of passage 35 and groove chambers, in groove chamber 34, be provided with a restraining spring 344 in addition, restraining spring 344 can be the motion guide of obturator 343, and offers a through hole 345 in the upper end of groove chamber 34; The top of pedestal 3 has screwed togather a hollow cylinder 36, be provided with a bar 361 that hits moving up and down in the hollow cylinder 36, and the top of hitting bar 361 is installed with a control handle 362, control handle 362 can drive and hit bar 361 and move in hollow cylinder 36, and hit and be arranged with a flexible member 363 on the bar 361, when flexible member 363 disappears or do not have external force in external force, can the top of bar 361 ejections to through hole 345 will be hit; The upper end of diaphragm 30 links in addition a depression bar 311, depression bar 311 1 sides are provided with a closure elements 312, closure elements 312 is the pressure of block channel 35 eluting gas in good time, simultaneously, the lower end snail of lower cover 4 is provided with one and adjusts button 41, adjust button 41 and be provided with a spring 42, spring 42 can compress diaphragm 30, and makes diaphragm 30 interlock depression bars 311 so that drive closure elements 312 block channel 35.

Still see also shown in Figure 2, gas flow controller is under normal condition, gases at high pressure can be via input port 32, duct 341, and enter groove chamber 34, this moment, obturator 343 in the groove chamber 34 is not filled in stifled passway 351, therefore, gases at high pressure can be via passway 351, passage 35 enters decompression chamber 31, and before entering decompression chamber 31, the pressure of gases at high pressure must overcome the pressure of closure elements 312 closed channels 35, beginning can enter decompression chamber 31, and the gases at high pressure that enter decompression chamber 31 are exported for use by delivery outlet 33 through after reducing pressure again, simultaneously, stove and accessory that is communicated with delivery outlet 33 or water heater (not shown) are a closing pipe line when not using, and in use, the gas that stove and accessory or water heater burnt, its flow is a certain value, thereby the gas flow by decompression chamber 31 also is a certain value.

The continuous Fig. 3 that sees also, it is the cut-open view of the utility model preferred embodiment, when the pipeline that connects stove and accessory or water heater because of breakage, and make when gas outwards runs off in a large number, decompression chamber 31 interior gases will flow to delivery outlet 33 rapidly this moment, and when the gas in the decompression chamber 31 flows out in a large number, to cause a low-pressure state, gas is flowed in the decompression chamber 31 via passage 35 rapidly, to in passage 35, form one suction because of the gas that flows fast this moment, this suction will attract the obturator 343 in the groove chamber 34 to move, and be jammed in the front end of passway 351, simultaneously obturator 343 also can by by the pushing and pressing of source of the gas effluent air more blocking on passway 351, cause the gases at high pressure of input port 32 will be barred from the groove chamber 34 and can't flow out, thereby when delivery outlet 33 or pipeline breakage, can avoid gases at high pressure again by delivery outlet 33 outputs, and cause the dangerous phenomenon of fire or poisoning; In addition, because of passway 351 thing 343 that gets clogged seals and can't export gases at high pressure, and after delivery outlet 33 or pipeline repairing, can be by the control handle 362 at lower base 3 tops, so that control handle 362 can drive and hit bar 361 and move down, and then the bottom of hitting bar 361 can enter groove chamber 34 via through hole 345, simultaneously can shoot down the obturator 343 that is closed in passway 351, and obturator 343 is dropped in groove chamber 34, so the gases at high pressure in the groove chamber 34 can be again by passway 351 outputs, gases at high pressure are riddled in the decompression chamber 31 once again,, and can improve security in the use so that for using.

In sum, the utility model can be adsorbed and be closed on the passway of passage, and gases at high pressure are no longer exported when delivery outlet or pipeline generation gas leak by means of obturator, can improve the security in the use really.

Claims

1, a kind of gas flow controller, gas flow controller has a pedestal, one side of pedestal offers an input port, opposite side then offers a delivery outlet, and be covered with a lower cover in the lower end of pedestal, and between pedestal and lower cover, be provided with a diaphragm, diaphragm and pedestal form a decompression chamber, and the decompression chamber is communicated with delivery outlet, linking in the upper end of diaphragm simultaneously has a depression bar, and a side of depression bar is provided with a closure elements, and the lower end snail in lower cover is provided with an adjustment button in addition, adjust button and be provided with a spring, spring can compress diaphragm; It is characterized in that: offer a groove chamber in the pedestal, one side of groove chamber offers a duct, duct one end is communicated with the input port, the other end is communicated with the groove chamber, the opposite side of groove chamber offers a passage, passage is communicated with the decompression chamber, and offers a through hole in the upper end of groove chamber, and installs one and can be adsorbed and the obturator of blocking on passage in groove is indoor; The top of pedestal has screwed togather a hollow cylinder, is provided with a bar that hits moving up and down in the hollow cylinder, and the top of hitting bar is installed with a control handle, hits and is arranged with a flexible member on the bar.

2, gas flow controller as claimed in claim 1 is characterized in that: be provided with a restraining spring that can be the obturator motion guide in the groove chamber.