CN201232799Y - Sealing device for gas valve pull rod - Google Patents
Sealing device for gas valve pull rod Download PDFInfo
- Publication number
- CN201232799Y CN201232799Y CNU2008200642037U CN200820064203U CN201232799Y CN 201232799 Y CN201232799 Y CN 201232799Y CN U2008200642037 U CNU2008200642037 U CN U2008200642037U CN 200820064203 U CN200820064203 U CN 200820064203U CN 201232799 Y CN201232799 Y CN 201232799Y
- Authority
- CN
- China
- Prior art keywords
- gas valve
- pull bar
- upper shell
- pull rod
- sealing cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a sealing device of a pull rod of a gas valve, which comprises a gas valve body consisting of an upper casing body (5), a pull rod (6), a power device (7), a lower casing body (8), a propulsion device (9) and a sealing cover cap (10). The upper casing body (5) and the lower casing body (8) are sealed and fixed together to form a gas valve core channel; the pull rod (6), the power device (7), the pushing device (9) and the sealing cover (10) are installed in the gas valve core channel; a through hole is arranged on the upper casing body (5); the upper end of the pull rod (6) passes through the through hole and extends out the upper casing body (5); the sealing device is arranged between the pull rod (6) and the trough hole. The utility model is characterized in that the sealing device comprises a flexible sealed cap (4), a small hole is arranged in the flexible sealed cap (4), the pull rod (6) passes through the small hole and is tightly sealed and matched with the flexible sealed cap (4), a cap peak (12) is arranged on the periphery of the flexible sealed cap (4), and the cap peak (12) is sealed and fixed on the upper casing body (5).
Description
1. technical field
The utility model relates to a kind of gas valve with the gas alarm electrotome, and after this gas valve was mainly used in gas leakage alarm, fuel gas alarm was closed gas valve automatically, thereby cuts off blast tube, avoids gas leakage to cause adverse consequences.After treating that leakage factor is got rid of, open gas valve, recover air feed to the user again.
2. background technique
The gas valve of existing band gas alarm electrotome mainly by drawing cap, form by upper shell, pull bar, power plant (being generally solenoid valve), advancing means, end cover, sealing cap, lower shell body.Its working principle is: power plant move downward pull bar when closing gas valve, thereby advancing means moves downward, the sealing cap of advancing means end withstands the lower shell body ventilating hole, blast tube is cut off, in the time will opening gas valve, pull bar is moved upward, thereby make advancing means end seal block leave the lower shell body ventilating hole, blast tube is open-minded.Combustion gas enters from the lower shell body suction port, goes out from the lower shell body air outlet.General gas valve passes upper shell at pull bar outer end is connected with the Kong Bingyu upper shell that a seal closure covers the upper shell that pull bar and pull bar pass, in the time will opening gas valve, need take off seal closure, just the cap that draws on the stretchy pull bar is opened valve, make troubles to use like this, if lose seal closure, foreign matter enters upper shell from hole, pull bar place, will influence the work of upper shell internally-powered device, the gas valve that also has adopts the O-ring seals structure in the outer end that the upper shell pull bar passes, be the O-ring seals sealing, pull bar passes through from O-ring seals.This O-ring seals such as good seal performance, then O-ring seals is big to the pull bar resistance, and it is obstructed that pull bar moves downward possibility when closing valve, and as unobstructed, the O-ring seals sealability is bad again, and combustion gas may be leaked.Also to cover the hole of the upper shell that pull bar and pull bar pass simultaneously with seal closure, and be connected, must take off seal closure earlier when the user will open valve, could mention pull bar, use inconvenient by drawing cap with upper shell.
3. summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, design a kind of burnt gas valve pull rod seal device, around pull bar, do not reveal and the cancellation gas valve upper shell seal closure that covers pull bar commonly used to guarantee combustion gas, behind gas lockout valve, the direct pull pull bar can reach the purpose that gas valve is opened.
Basic ideas of the present utility model are that the valve core outer end sealing structure unit that the flexible sealing cap that is closely passed by pull bar is a main body is housed in the place that the upper shell pull bar passes.
The utility model specifically is achieved in that
A kind of burnt gas valve pull rod seal device, comprise by upper shell, pull bar, power plant, lower shell body, advancing means, the gas valve body that sealing cap is formed, sealing and fixing constitutes combustion gas valve core passage between upper shell and the lower shell body, pull bar, power plant, advancing means, sealing cap is loaded in the combustion gas valve core passage, wherein on upper shell, have through hole, the termination, upper end of pull bar is passed through hole and is stretched out the upper shell outside, between pull bar and through hole, be provided with seal arrangement, it is characterized in that seal arrangement comprises a flexible sealing cap, have aperture in this flexible sealing cap, pull bar passes from aperture and is close to the flexible sealing cap and is sealed and matched, this flexible sealing cap periphery is provided with the brim of a hat, and the brim of a hat is airtight to be fixed on the upper shell.The flexible sealing cap should have suitable physical dimension, and when guaranteeing that pull bar is in any displacement state, resiliently deformable does not take place the flexible sealing cap, thereby guarantees that the flexible sealing cap is close to be sealed and matched (cover) all the time and is not subjected to displacement at the same position of pull bar.
In the utility model, the brim of a hat can have that multiple common mode is airtight to be fixed on the upper shell, as bonding, flange connection etc., its objective is to make through hole can not leak combustion gas.The flexible sealing cap generally adopts rubber to make.
Further scheme is: upper shell is provided with the annular boss that is positioned at bore periphery that is connected as a single entity with upper shell outward, the airtight top of being fixed in annular boss of the brim of a hat periphery of flexible sealing cap.This moment, the flexible sealing cap was arranged in the cavity that annular boss forms.
Further scheme is: be fixed with block above the annular boss, the brim of a hat is between the top and block of annular boss.Can be between annular boss and the block by being threaded fixing or other means of fixation.
Further scheme is again: between the brim of a hat and block the ring-type pressing plate is housed also.Further to guarantee sealing effect.
The utility model has the advantages that:
When burnt gas valve pull rod seal device made combustion gas guarantee can not leak from through hole, pull bar moved up and down not only unobstructed but also laborsaving.And the outer end that the upper shell pull bar passes need not adorn that general valve uses covers the seal closure of the through hole of the upper shell that pull bar and pull bar pass.After eliminating dangerous situation, the cap that draws on the direct pull pull bar just can be opened valve, and do not resemble common valve and need back out just stretchy pull bar of seal closure, thus easy to use and reliable.
4. description of drawings
Fig. 1 is the embodiment's of gas valve a erection drawing
Fig. 2 is the partial enlarged drawing of pull rod seal device part among Fig. 1.
Among the figure: 1-draws cap, the 2-block, and the 3-pressing plate, 4-flexible sealing cap, the 5-upper shell, the 6-pull bar, 7-power plant (solenoid valve), the 8-lower shell body, the 9-advancing means, the 10-sealing cap, 11-boss top, the 12-the brim of a hat, the 13-boss, the 15-combustion gas is imported and exported.(not having numbering 14 among the figure)
5. embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed description.
As Fig. 1 and Fig. 2, a kind of burnt gas valve pull rod seal device, comprise by upper shell 5, pull bar 6, solenoid valve power plant 7, lower shell body 8, advancing means 9, the gas valve body that sealing cap 10 is formed, sealing and fixing constitutes combustion gas valve core passage between upper shell 5 and the lower shell body 8, pull bar 6, power plant 7, advancing means 9, sealing cap 10 is loaded in the combustion gas valve core passage, wherein on upper shell 5, have through hole, the termination, upper end of pull bar 6 is passed through hole and is stretched out upper shell 5 outsides, between pull bar 6 and through hole, be provided with seal arrangement, it is characterized in that seal arrangement comprises a flexible sealing cap 4, have aperture in this flexible sealing cap 4, pull bar 6 passes from aperture and is close to flexible sealing cap 4 and is sealed and matched, these flexible sealing cap 4 peripheries are provided with the brim of a hat 12, the upper shell 5 outer annular boss that are positioned at bore periphery 13 that are connected as a single entity with upper shell 5 that are provided with, the brim of a hat 12 peripheries of flexible sealing cap 4 are positioned on 11 planes, top of annular boss 13, pressing plate 3 is housed on the brim of a hat 12, be provided with above the pressing plate 3 block 2, the block 2 with annular boss 13 between fastening by being threaded.Cap 1 is drawn at pull bar 6 tops by being threaded.
When advancing means 9 moved downward, the sealing cap 10 on the pull bar 6 covered the combustion gas of lower shell body 8 and imports and exports 15, and fuel gas path is cut off.When advancing means 9 moved upward, the sealing cap 10 on the pull bar 6 left the combustion gas ventilating hole 15 of body lower shell body 8, and fuel gas path is by open-minded, and air feed recovers.
Claims (4)
1, a kind of burnt gas valve pull rod seal device, comprise by upper shell (5), pull bar (6), power plant (7), lower shell body (8), advancing means (9), the gas valve body that sealing cap (10) is formed, sealing and fixing constitutes combustion gas valve core passage between upper shell (5) and the lower shell body (8), pull bar (6), power plant (7), advancing means (9), sealing cap (10) is loaded in the combustion gas valve core passage, wherein on upper shell (5), have through hole, the termination, upper end of pull bar (6) is passed through hole and is stretched out upper shell (5) outside, between pull bar (6) and through hole, be provided with seal arrangement, it is characterized in that seal arrangement comprises a flexible sealing cap (4), have aperture in this flexible sealing cap (4), pull bar (6) passes from aperture and is close to flexible sealing cap (4) and is sealed and matched, this flexible sealing cap (4) periphery is provided with the brim of a hat (12), and the brim of a hat (12) is airtight to be fixed on the upper shell (5).
2, burnt gas valve pull rod seal device according to claim 1, it is characterized in that the outer annular boss that is positioned at bore periphery (13) that is connected as a single entity with upper shell (5) that is provided with of upper shell (5), the airtight top (11) of being fixed in annular boss (13) of the brim of a hat (12) periphery of flexible sealing cap (4).
3, burnt gas valve pull rod seal device according to claim 2 is characterized in that being fixed with above the annular boss (13) block (2), and the brim of a hat (12) is positioned between the top (11) and block (2) of annular boss (13).
4, burnt gas valve pull rod seal device according to claim 3 is characterized in that between the brim of a hat (12) and block (2) pressing plate (3) being housed also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200642037U CN201232799Y (en) | 2008-07-11 | 2008-07-11 | Sealing device for gas valve pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200642037U CN201232799Y (en) | 2008-07-11 | 2008-07-11 | Sealing device for gas valve pull rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232799Y true CN201232799Y (en) | 2009-05-06 |
Family
ID=40619179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200642037U Expired - Lifetime CN201232799Y (en) | 2008-07-11 | 2008-07-11 | Sealing device for gas valve pull rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232799Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307841B (en) * | 2008-07-11 | 2010-12-08 | 何文勇 | Burnt gas valve pull rod seal device |
-
2008
- 2008-07-11 CN CNU2008200642037U patent/CN201232799Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307841B (en) * | 2008-07-11 | 2010-12-08 | 何文勇 | Burnt gas valve pull rod seal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090506 Effective date of abandoning: 20080711 |