CN206420522U - A kind of anti-reverse outlet duct structures - Google Patents
A kind of anti-reverse outlet duct structures Download PDFInfo
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- CN206420522U CN206420522U CN201720084895.0U CN201720084895U CN206420522U CN 206420522 U CN206420522 U CN 206420522U CN 201720084895 U CN201720084895 U CN 201720084895U CN 206420522 U CN206420522 U CN 206420522U
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- reverse
- ring
- fixing ring
- base
- escape pipe
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- 230000000694 effects Effects 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of anti-reverse outlet duct structures, including escape pipe and it is arranged on the anti-reverse base of escape pipe upper end, the inner bottom surface of anti-reverse base is provided with stair-stepping annular groove, fixing ring and anti-reverse pressing plate are installed on groove, the cross section of fixing ring is class Z-type structure, the outer ring of fixing ring is arranged on the middle part of groove, the inner ring of fixing ring stretches out groove, anti-reverse pressing plate is pressed on the outer ring of fixing ring, and the outer ring of fixing ring is fixed, the underside of anti-reverse base is connected with anti-reverse lid, the arc chip architecture that anti-reverse lid is recessed upwards for middle part, upper surface with anti-reverse lid is connected by the inner ring of fixing ring.The utility model realizes good anti-reverse effect, can reach that what traditional anti-reverse escape pipe can not accomplish does not occur inverse gas completely.
Description
Technical field
The utility model is related to one kind, more particularly, to a kind of anti-reverse outlet duct structures.
Background technology
In the current gas meter, flow meter for producing and using, the method that the opposite direction of gas meter, flow meter is ventilated directly or indirectly is prevented very
It is many, such as：There is a holdback, many methods such as bidirectional counter, but these methods are in some links and unsatisfactory, or
It is complicated, or cost is too high.No matter take what structure, but final purpose seek to make gas meter, flow meter it is proper use of with
It is no, it can ensure that the interests of user and supplier do not suffer damage；Thus to ensure the peace of gas meter, flow meter one-way ventilating work
Complete reliable, gas meter, flow meter, which is still ventilated, when preventing the connection of gas meter, flow meter opposite direction uses.Gas meter, flow meter is in the feelings reversely ventilated in the market
Under condition, gas meter, flow meter is not prevented mostly, and reversely ventilation is used.
European Union EN1359 gas meter, flow meter standard clause 6.5.4 regulations block reverse gas flow meter otherwise allow by more than
2.5% reverse flow of its maximum stream flow.Household diaphragm gas meter mostly domestic at present does not reach this requirement even, let alone
Accomplish completely air tight.
Chinese utility model patent, which is disclosed, a kind of prevents the aluminum hull diaphragm gas meter of gas reverse flow, application number：
CN201520477260.8, including upper casing combination and lower casing combination；The upper casing combination and lower casing combine the company of being bolted
Connect；Upper casing combines front end and combined provided with counter；Upper casing combination side is provided with escape pipe, and escape pipe bottom is provided with counterflow-preventing base
Seat, counterflow-preventing pedestal is fixedly connected with escape pipe clamp；Counterflow-preventing lid, counterflow-preventing lid and counterflow-preventing are installed on counterflow-preventing pedestal
Pedestal is hinged；Counterflow-preventing sealing ring is provided between counterflow-preventing pedestal and escape pipe.The utility model is simple in construction, reasonable in design,
Counterflow-preventing sealing ring, easy for installation, sealed reliable are installed on counterflow-preventing pedestal.Counterflow-preventing pedestal is arranged on close in escape pipe
One end of lower casing combination, it is remote from gas meter, flow meter connection outlet, it is difficult to be destroyed.The utility model is cheap, is adapted to widely use,
It ensure that the interests of gas company.
The conventional a kind of anti-reverse structure of anti-reverse structure disclosed in above-mentioned utility model patent, as in the market, but the knot
Although structure can reach that European Union EN1359 gas meter, flow meter standard clauses 6.5.4 is provided, it can not realize completely air tight.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of anti-reverse outlet duct structures, can realize and not leak completely
The structure of gas.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：A kind of anti-reverse outlet duct structures, including
Escape pipe and the anti-reverse base for being arranged on escape pipe upper end, the inner bottom surface of anti-reverse base are provided with stair-stepping annular groove,
Fixing ring and anti-reverse pressing plate are installed, the cross section of described fixing ring is class Z-type structure on described groove,
The outer ring of described fixing ring is arranged on the middle part of groove, and the inner ring of fixing ring stretches out described groove, described
Anti-reverse pressing plate is pressed on the outer ring of described fixing ring, and the outer ring of fixing ring is fixed, described anti-reverse base
Underside be connected with anti-reverse lid, described anti-reverse lid is the arc chip architecture that middle part is recessed upwards, described profile seal
Upper surface with anti-reverse lid is connected by the inner ring of circle.
The further preferred scheme of the utility model：The cross section of described anti-reverse base is inverted L-type structure, described
The top of anti-reverse base be covered in the upper surface of anti-reverse base, the lateral surface of described anti-reverse base lower end, which is affixed on, described to be gone out
The notch for being provided with O-ring is provided with the inside of the inwall of tracheae, described escape pipe upper surface, described O-ring is against institute
The kink for the anti-reverse base outer surface stated.Anti-reverse base is used to install multiple for preventing the parts of back flow of gas.It is anti-reverse
Air-tightness between base and escape pipe is same good.Therefore after anti-reverse base is installed, and in escape pipe and anti-reverse bottom
O-ring is set between seat, it is ensured that air-tightness.
The further preferred scheme of the utility model：Described groove includes being arranged on the of the lateral surface of anti-reverse base
One cascade ring and the second cascade ring being arranged in the middle of anti-reverse base, the outer ring of described fixing ring are arranged on the second ladder
On ring, the bottom surface of described anti-reverse base is the inclined inclined-plane in inside side.It is inclined that the base of anti-reverse base is set to inside side
Inclined-plane so that the bottom surface of anti-reverse base and the structure change of without prejudice to fixing ring.
The further preferred scheme of the utility model：The cross section of described anti-reverse pressing plate is L-type structure, and described is anti-reverse
The upper end of pressing plate is arranged on the first cascade ring, and the lower end of described anti-reverse pressing plate is pressed under described fixing ring outer ring
On bottom surface, described anti-reverse pressing plate fixes the outer ring of fixing ring.The outer ring of fixing ring is consolidated by anti-reverse pressing plate
It is fixed, it is ensured that fixing ring will not have gap during deforming upon because of between fixing ring and anti-reverse base
So that back flow of gas passes through.
The further preferred scheme of the utility model：Pass through between the upper surface of described fixing ring inner ring and inner ring
Inclined plane is connected.Inclined plane is set so that the inner ring of fixing ring can Bending Deformation while it is strong with certain structure
Degree.
The further preferred scheme of the utility model：The side of described anti-reverse lid is connected with rotary shaft, described rotation
The two ends of axle are arranged on anti-reverse base, and the two ends of described rotary shaft are arranged on anti-reverse base, described anti-reverse lid it is outer
The interior diameter of diameter and escape pipe is adapted.
Compared with prior art, the utility model has the advantage of traditional anti-reverse outlet duct structures are different from, anti-reverse
The inner bottom surface of base sets stair-stepping annular groove, and the corresponding outer ring for fixing fixing ring on groove.It is special-shaped close
The cross section of seal is class zigzag configuration, and the inner ring of fixing ring stretches out groove.Fixing ring coordinates what middle part was recessed upwards
The anti-reverse lid of arc chip architecture so that anti-reverse gas of the present utility model works well, is realized entirely without inverse gas.The utility model is adopted
The anti-reverse lid for the arc chip architecture being recessed upwards with middle part, the gas of normal pass is to walk from top to bottom.Therefore, gas holds very much
On the contact surface for reaching fixing ring and anti-reverse pressing plate easily above.Only need the power of very little, gas just can be to
Under push arc-like sheet open, pass through escape pipe.And work as back flow of gas, i.e., up walk from below, anti-reverse lid should be provided with, gas is assembled
Collect in the anti-reverse recess for covering end, and because the gas of anti-reverse lid recess exerts a force to anti-reverse lid so that it is anti-reverse to cover pressure, make
Obtain anti-reverse lid and contact even closer with different in nature sealing ring, air-tightness is more preferable.Therefore gas and outlet can not up be passed through from below
Pipe.The utility model sets the cross section of fixing ring to be class zigzag configuration, in the active force by anti-reverse lid, special-shaped close
Seal can stress bend deformation, and the contact surface between the fixing ring and anti-reverse pressing plate after Bending Deformation is bigger, gas
Close property effect is more preferable.
To sum up, the utility model realizes good anti-reverse effect, can reach what traditional anti-reverse escape pipe can not be accomplished
Inverse gas does not occur completely.
Brief description of the drawings
Fig. 1 is sectional view of the present utility model；
Fig. 2 is the partial enlarged drawing at A in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
As shown in Figure 1 to Figure 2：A kind of anti-reverse outlet duct structures, including escape pipe 1 and it is arranged on the upper end of escape pipe 1
Anti-reverse base 2, the inner bottom surface of anti-reverse base 2, which is provided with stair-stepping annular groove 3, groove 3, is provided with fixing ring 4
With anti-reverse pressing plate 5, the cross section of fixing ring 4 is class Z-type structure, and the outer ring of fixing ring 4 is arranged in groove 3
Portion, the inner ring of fixing ring 4 stretches out groove 3, and anti-reverse pressing plate 5 is pressed on the outer ring of fixing ring 4 to fixing ring 4
Outer ring is fixed, and the underside of anti-reverse base 2 is connected with anti-reverse lid 6, and anti-reverse lid 6 is the arc-like sheet knot that middle part is recessed upwards
Upper surface with anti-reverse lid 6 is connected by structure, the inner ring of fixing ring 4.
The cross section of anti-reverse base 2 is inverted L-type structure, and the top of anti-reverse base 2 is covered in the upper table of anti-reverse base 2
Face, the lateral surface of the anti-reverse lower end of base 2 be affixed on the inside of the inwall of escape pipe 1, the upper surface of escape pipe 1 be provided be provided with it is O-shaped
The notch of circle 7, O-ring 7 is against the kink of the anti-reverse outer surface of base 2.
Groove 3 includes the first cascade ring 21 for being arranged on the lateral surface of anti-reverse base 2 with being arranged in the middle of anti-reverse base 2
The second cascade ring 22, the outer ring of fixing ring 4 is arranged on the second cascade ring 22, and the bottom surface of anti-reverse base 2 is to inner side
Inclined inclined-plane.
The cross section of anti-reverse pressing plate 5 is L-type structure, and the upper end of anti-reverse pressing plate 5 is arranged on the first cascade ring 21, anti-reverse pressure
The lower end of plate 5 is pressed on the bottom surface of the outer ring of fixing ring 4, and anti-reverse pressing plate 5 fixes the outer ring of fixing ring 4.
Connected between the upper surface of the inner ring of fixing ring 4 and inner ring by inclined plane.The side of anti-reverse lid 6 is connected with rotation
Rotating shaft 8, the two ends of rotary shaft 8 are arranged on anti-reverse base 2, and the two ends of rotary shaft 8 are arranged on anti-reverse base 2, anti-reverse lid 6
The interior diameter of overall diameter and escape pipe 1 is adapted.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of anti-reverse outlet duct structures, including escape pipe and the anti-reverse base for being arranged on escape pipe upper end, it is characterised in that
The inner bottom surface of anti-reverse base is provided with stair-stepping annular groove, and fixing ring and anti-reverse pressure are provided with described groove
Plate, the cross section of described fixing ring is class Z-type structure, and the outer ring of described fixing ring is arranged in groove
Portion, the inner ring of fixing ring stretches out described groove, and described anti-reverse pressing plate is pressed on the outer ring of described fixing ring
The outer ring of fixing ring is fixed, the underside of described anti-reverse base is connected with anti-reverse lid, described anti-reverse lid
Upper surface with anti-reverse lid is connected by the arc chip architecture being recessed upwards for middle part, the inner ring of described fixing ring.
2. a kind of anti-reverse outlet duct structures according to claim 1, it is characterised in that the cross section of described anti-reverse base
For inverted L-type structure, the top of described anti-reverse base is covered in the upper surface of anti-reverse base, described anti-reverse base lower end
Lateral surface be affixed on the inside of the inwall of described escape pipe, described escape pipe upper surface and be provided with the groove for being provided with O-ring
Mouthful, described O-ring is against the kink of described anti-reverse base outer surface.
3. a kind of anti-reverse outlet duct structures according to claim 1, it is characterised in that described groove is anti-including being arranged on
First cascade ring of the lateral surface of inverse base and the second cascade ring being arranged in the middle of anti-reverse base, described fixing ring
Outer ring is arranged on the second cascade ring, and the bottom surface of described anti-reverse base is the inclined inclined-plane in inside side.
4. a kind of anti-reverse outlet duct structures according to claim 1, it is characterised in that the cross section of described anti-reverse pressing plate
For L-type structure, the upper end of described anti-reverse pressing plate is arranged on the first cascade ring, and the lower end of described anti-reverse pressing plate is pressed in described
Fixing ring outer ring bottom surface on, described anti-reverse pressing plate fixes the outer ring of fixing ring.
5. a kind of anti-reverse outlet duct structures according to claim 1, it is characterised in that described fixing ring inner ring
Connected between upper surface and inner ring by inclined plane.
6. a kind of anti-reverse outlet duct structures according to claim 1, it is characterised in that the side connection of described anti-reverse lid
There is rotary shaft, the two ends of described rotary shaft are arranged on anti-reverse base, and the two ends of described rotary shaft are arranged on anti-reverse base
On, the described overall diameter of anti-reverse lid and the interior diameter of escape pipe is adapted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720084895.0U CN206420522U (en) | 2017-01-22 | 2017-01-22 | A kind of anti-reverse outlet duct structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720084895.0U CN206420522U (en) | 2017-01-22 | 2017-01-22 | A kind of anti-reverse outlet duct structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206420522U true CN206420522U (en) | 2017-08-18 |
Family
ID=59570961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720084895.0U Active CN206420522U (en) | 2017-01-22 | 2017-01-22 | A kind of anti-reverse outlet duct structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206420522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840298A (en) * | 2017-01-22 | 2017-06-13 | 浙江蓝宝石仪表科技有限公司 | A kind of anti-reverse outlet duct structures |
-
2017
- 2017-01-22 CN CN201720084895.0U patent/CN206420522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840298A (en) * | 2017-01-22 | 2017-06-13 | 浙江蓝宝石仪表科技有限公司 | A kind of anti-reverse outlet duct structures |
| CN106840298B (en) * | 2017-01-22 | 2023-08-18 | 浙江蓝宝石仪表科技有限公司 | Anti-reverse air outlet pipe structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A structure of anti reverse air outlet pipe Effective date of registration: 20230815 Granted publication date: 20170818 Pledgee: Agricultural Bank of China Limited Ninghai County sub branch Pledgor: ZHEJIANG SAPPHIRE METER TECHNOLOGY Co.,Ltd. Registration number: Y2023330001764 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20170818 Pledgee: Agricultural Bank of China Limited Ninghai County sub branch Pledgor: ZHEJIANG SAPPHIRE METER TECHNOLOGY Co.,Ltd. Registration number: Y2023330001764 |