CN106768142A - A kind of explosion-proof water meter - Google Patents
A kind of explosion-proof water meter Download PDFInfo
- Publication number
- CN106768142A CN106768142A CN201710011647.8A CN201710011647A CN106768142A CN 106768142 A CN106768142 A CN 106768142A CN 201710011647 A CN201710011647 A CN 201710011647A CN 106768142 A CN106768142 A CN 106768142A
- Authority
- CN
- China
- Prior art keywords
- lower stop
- stop piece
- hat type
- hollow cavity
- explosion
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000005489 elastic deformation Effects 0.000 claims abstract description 7
- 230000002441 reversible effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/10—Preventing damage by freezing or excess pressure or insufficient pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
Abstract
A kind of explosion-proof water meter, including transparent table cover, instrument board, watchcase, table cover is connected on lid on the hollow hat type above lower stop piece including that can cover lower stop piece, lid that envelope is acted on instrument board, enclosed with top surface on lower stop piece by the hollow wall covered on hat type and set the hollow cavity for forming into a sealing, filled with transparent gases at high pressure in sealing hollow cavity；When the increase of instrument board internal pressure, lower stop piece bottom surface is pressurized, lower stop piece reversible elastic deformation, lower stop piece is raised up towards hollow cavity direction, and transparent medium is squeezed transmission pressure in lid hollow cavity top surface inwall on hat type in hollow cavity, and top surface raises up deformation on lid hollow cavity on hat type, when being no longer pressurized inside instrument board, in the presence of transparent medium in hollow cavity, lower stop piece elastic deformation restPoses, and the top surface resilience of lid hollow cavity recovers to original position on hat type.Present design simple structure, structural strength are high, low production cost, in extreme circumstances be difficult explosion the advantages of.
Description
Technical field
The present invention relates to a kind of explosion-proof water meter.
Background technology
Running water is that the main of nowadays people is originated with water, is still manufactured in either usually living, from each
Ordinary people be unable to do without the use of running water to all trades and professions every household.China mainly still uses mechanical water meter at present
The tonnage of people's life production and application running water is measured, however it is most using relatively broad various mechanical water meters at present
Using the table cover of single-glass material, under arctic weather especially under the big environment of temperature change, because of instrument board and list
Ponding between layer glass table cover freezes, and instrument board internal pressure increase after volume increase, causes single-glass table cover to rupture after icing
Or even situations such as pipe leakage, not only cause the waste of resource to also add hand labor and bear.
The content of the invention
It is an object of the invention to provide a kind of simple structure, structural strength high, low production cost, in extreme circumstances not
The explosion-proof water meter for easily bursting.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：A kind of explosion-proof water meter, including transparent table
Lid, instrument board, watchcase, described table cover are connected on above lower stop piece including that can cover lower stop piece, lid that envelope is acted on instrument board
Covered on hollow hat type, enclosed by the hollow wall and the top surface on lower stop piece that are covered on hat type and set the hollow cavity for forming into a sealing, institute
Filled with transparent gases at high pressure in the sealing hollow cavity stated；When the increase of instrument board internal pressure, lower stop piece bottom surface is pressurized, lower block
Piece overcomes pressure and itself tensile strength reversible elastic deformation in hollow cavity, and lower stop piece is raised up towards hollow cavity direction,
Transparent gases at high pressure are squeezed transmission pressure in lid hollow cavity top surface inwall on hat type in hollow cavity, cavity in being covered on hat type
Top surface raises up deformation on body, explosion-proof so as to realize instrument board internal pressure relief, when being no longer pressurized inside instrument board, hollow
In cavity in the presence of transparent gases at high pressure, lower stop piece elastic deformation is restPosed, and lid hollow cavity top surface is returned on hat type
Bullet recovers to original position.
The present invention is connect and to form hollow cavity using lower stop piece with the hat type top cap with cavity, and is filled in hollow cavity
Enter the table cover that the transparent gases at high pressure with cushioning effect form integrated explosion proof system water meter, compared to the single-glass table in conventional art
Lid is at low temperature because the ponding between instrument board and table cover freezes volume and increases suddenly, and the structural strength of single-glass table cover is remote
Can not support volume increase ice cube and rupture, water meter explosion is endured cold, the lower stop piece that uses can be according to ponding knot in the present invention
The increase of ice body product reduces situation to the hollow cavity internal projection of table cover or resilience, and the transparent gases at high pressure in table cover are in body
Itself pressure becomes greatly or volume becomes big rear itself pressure and diminishes after product diminution, serves product after buffering ponding icing volume surge
The effect of the raw larger pressure to overall table cover, makes table cover not burst because that can not bear larger pressure, so as to reduce
The phenomenon of table cover explosion, reduces the repairing maintenance work for repairing the staff for safeguarding water meter under extreme temperature, saves a large amount of people
Power material resources, reduce the leakage and waste of running water, it is ensured that resident normally uses running water in the case of extreme temperature, is also certainly
Water provides enterprise and retrieves a large amount of losses.
Further, covered on the hat type of the table cover by hollow circuit cylinder cap body, be integrally formed in hollow circuit cylinder cap body periphery
Edge and the shade composition for stretching out, lid is sealingly engaged by shade with lower stop piece on hat type.Covered on the hat type of sealing engagement
Shade and lower stop piece make the transparent gases at high pressure in hollow cavity be difficult to be overflowed from the gap being sealingly engaged, it is ensured that transparent height
Calm the anger the pressure relief capability of body.
Further, table cover is fixed on instrument board by a hubbed flange between described table cover and watchcase,
Hollow circuit cylinder cap body set is stretched and is limited in the eck of hubbed flange, and the upper top surface of hollow circuit cylinder cap body is exposed to hubbed flange
Be fixed table cover in instrument board to the shade suppressing action covered on table cover hat type by its shoulder inwall by eck, hubbed flange
On.The spacing cooperation of the eck of hollow circuit cylinder cap body and hubbed flange make hollow circuit cylinder cap body will not in flange eck because itself
Vibrations collide and rub with flange, reduce the abrasion of overall table cover, it is ensured that its energy long-time stable work, hubbed flange will
Table cover is pressed abd fixed on the overall table cover of order on instrument board and stably can be operated on instrument board.
Further, the transparent resin material for being same intensity with lower stop piece is covered on described hat type to process.Use
Lid is difficult to because material is different with lower stop piece after machine-shaping on the hat type of the transparent resin material machine-shaping of intensity of the same race
And occur because prolonged even ftracture using material aging so as to be deformed, performance is more preferable in use.
Further, it is more than lower stop piece in the thickness that top surface is covered on the hat type of hollow cavity position in described table cover
Thickness.The thickness of top surface is covered on hat type ensures lower stop piece during occurring compared with large deformation more than the thickness of lower stop piece, cap
Although being covered in formula, top surface can still be deformed upon but deformation is not too large, Gai Yin on overall hat type is prevented in lower stop piece deformation process
Ruptured for deformation is excessive, cause its performance to decline.
Further, described lower stop piece is lower concave arc piece.
Further, ultrasonic bonding is passed through on described hat type between lid and lower stop piece.After ultrasonic bonding processing,
Lid and lower stop piece are thoroughly bonded to one on hat type, in use more firm and durable, while further ensuring that middle cavity
Transparent gases at high pressure in body will not spill from hat type in the connection gap of lid and lower stop piece, reduce the performance of table cover.
The beneficial effects of the invention are as follows：Due to the deformation reduction instrument board internal pressure of upper lid lower stop piece, prevent so as to reach pressure release
Quick-fried function, simultaneously because when the relation of transparent gases at high pressure makes instrument board internal pressure recover normal, upper lid can recover as before, and resets
Rapidly, compared to single-glass water meter cover in the prior art, superstructure advantages of simple of the invention, pressure-resistant wear-resistant, stabilization
The high, process is simple of property is easily achieved, observe that perspectivity is high, and especially the life-span is very long.
Brief description of the drawings
Fig. 1 is a kind of overall structure sectional view of explosion-proof water meter.
Fig. 2 is a kind of overall structure diagram of explosion-proof Water meter cover.
Fig. 3 is the sectional view before a kind of explosion-proof Water meter cover is not pressurized.
Fig. 4 is the sectional view after a kind of explosion-proof Water meter cover is pressurized.
The parts title of numbering expression is as follows in accompanying drawing：1st, covered on hat type；1-2, lower stop piece；2nd, instrument board；3rd, watchcase；
4th, hollow circuit cylinder cap body；5th, hubbed flange；6th, hollow cavity；7th, shade.
Specific embodiment
In order that obtaining the technological means of realization of the present invention, character of innovation is apparent to function, is further illustrated below
The present invention.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the first embodiment of explosion-proof water meter of the invention, including transparent table cover, instrument
Disk 2, watchcase 3, described table cover are connected on lower stop piece 1-2 tops including that can cover lower stop piece 1-2, lid that envelope is acted on instrument board 2
Hollow hat type on lid 1, enclosed by hollow wall and the top surface on lower stop piece 1-2 of lid on hat type 1 set formed into one sealing it is hollow
Cavity 6, to enable lower stop piece 1-2 preferably deformation, the lower stop piece 1-2 of the present embodiment is lower concave arc piece.In described sealing
Filled with transparent gases at high pressure in cavity body 6, other transparent compressible mediums can be also used certainly.When the internal pressure of instrument board 2 increases
Greatly, lower stop piece 1-2 bottom surfaces are pressurized, and lower stop piece 1-2 overcomes pressure and itself tensile strength reversible elasticity in hollow cavity 6 to become
Shape, lower stop piece 1-2 is raised up towards the direction of hollow cavity 6, and transparent gases at high pressure are squeezed transmission pressure in cap in hollow cavity
The top surface inwall of 1 hollow cavity of lid 6 in formula, top surface raises up deformation on the hollow cavity 6 of lid 1 on hat type, so as to realize instrument board 2
Internal pressure relief is explosion-proof, when being no longer pressurized inside instrument board 2, in the presence of transparent gases at high pressure in hollow cavity, and lower stop piece
1-2 elastic deformations recover recessed, and the top surface resilience of 1 hollow cavity of lid 6 recovers to original position on hat type, and the present embodiment is extensive in order to be able to cause
Multiple more rapid and sensitive and with buffering effect, described transparent gases at high pressure are using high pressure transparent gas.
On the table cover hat type of the present embodiment lid 1 by hollow circuit cylinder cap body 4, be integrally formed in the neighboring of hollow circuit cylinder cap body 4
The edge and shade 7 for stretching out is constituted, lid 1 is sealingly engaged by shade 7 with lower stop piece 1-2 on hat type.The shade 7 of lid 1 on hat type
The effect of structure：The engaging zones area with lower stop piece 1-2 can not only be increased, transparent gases at high pressure from joint gap are effectively prevented
Middle spilling, while shade 7 makes assembling of the table cover on instrument board more stable.
Table cover is fixed on instrument board 2 by a hubbed flange 5 between the table cover and watchcase 3 of the present embodiment, in
4 sets of hollow round column cap body is stretched and is limited in the eck of hubbed flange 5, and the upper top surface of hollow circuit cylinder cap body 4 is exposed to hubbed flange 5
Eck, be easy to fluoroscopic observation, hubbed flange 5 is by its shoulder inwall to the suppressing action of shade 7 of lid 1 on table cover hat type by table cover
It is fixed on instrument board 2, vertical and horizontal displacement of the limitation table cover on instrument board 2.The eck of hubbed flange 5 or interior neck
Wall can also be fitted close with the outer wall of hollow circuit cylinder cap body 4, further to limit the lateral displacement of table cover.Table cover passes through with watchcase 3
Be positioned at table cover on watchcase 3 by one hubbed flange 5, even and if the table cover after positioning rock and shake and will not also produce displacement,
Relative friction between table cover and water meter miscellaneous part and collision are reduced, and improve table cover, between watchcase 3 and the three of hubbed flange 5
Steadiness, assembling of being more convenient for, more preferably, and water meter service life is greatly improved, and reduces water meter for the globality of water meter
The maintenance work of maintenance and repair staff, is that water undertaking saves a large amount of manpower and materials.
In the present embodiment, to employ wearability, resistance to pressure and perspectivity high for lid 1 and lower stop piece 1-2 on described hat type
Processed with intensity transparent resin material, and pass through ultrasonic bonding on hat type between lid 1 and lower stop piece 1-2, improve engagement
Sealing so that processing technology is more ripe, be more easily implemented, reading gathered data when it is more directly perceived.In described table cover in
The thickness of top surface is more than the thickness of lower stop piece 1-2 on lid 1 on the position hat type of hollow cavity 6.Top thickness is more than on lid 1 on hat type
The design of lower stop piece 1-2 thickness makes on hat type lid 1 and lower stop piece 1-2 during pressure-relief explosion-proof, it is ensured that can deform upon, enter
The ability of the overall table cover compensator or trimmer pressure of one step lifting, and on hat type lid 1 in deformation process deformation degree in elastic limit with
Under, belong to reversible deformation, it is to avoid overall table cover fragmentation situation.
Claims (10)
1. a kind of explosion-proof water meter, including transparent table cover, instrument board (2), watchcase (3), it is characterised in that：Described table cover includes can
Lid envelope acts on lower stop piece (1-2) on instrument board (2), lid and is connected on lid (1) on the hollow hat type above lower stop piece (1-2), by
Hollow wall and top surface on lower stop piece (1-2) that (1) is covered on hat type enclose the hollow cavity (6) for setting and forming into a sealing, described
Filled with transparent gases at high pressure in sealing hollow cavity (6)；When the increase of instrument board (2) internal pressure, lower stop piece (1-2) bottom surface is received
Pressure, lower stop piece (1-2) overcomes hollow cavity (6) interior pressure and itself tensile strength reversible elastic deformation, and lower stop piece (1-2) is upwards
Raised towards hollow cavity (6) direction, transparent gases at high pressure are squeezed and transmit pressure cavity in lid (1) on hat type in hollow cavity
Body (6) top surface inwall, covers top surface on (1) hollow cavity (6) and raises up deformation, so as to realize that instrument board (2) is internal on hat type
Pressure-relief explosion-proof, when being no longer pressurized inside instrument board (2), in the presence of transparent gases at high pressure in hollow cavity, lower stop piece (1-
2) elastic deformation restPoses, and (1) hollow cavity (6) top surface resilience is covered on hat type and is recovered to original position.
2. a kind of explosion-proof water meter according to claim 1, it is characterised in that：(1) is covered on the hat type of the table cover by hollow
Cylinder cap body (4), be integrally formed hollow circuit cylinder cap body (4) neighboring and stretch out shade (7) composition, on hat type cover
(1) it is sealingly engaged by shade (7) and lower stop piece (1-2).
3. a kind of explosion-proof water meter according to claim 2, it is characterised in that：Pass through between described table cover and watchcase (3)
Be fixed table cover on instrument board (2) by one hubbed flange (5), and hollow circuit cylinder cap body (4) set is stretched and is limited in hubbed flange (5)
Eck in, and the upper top surface of hollow circuit cylinder cap body (4) is exposed to the eck of hubbed flange (5), and hubbed flange (5) is by its shoulder
Be fixed table cover on instrument board (2) to shade (7) suppressing action that (1) is covered on table cover hat type by inwall.
4. a kind of explosion-proof water meter according to claim 1 or 2 or 3, it is characterised in that：On described hat type cover (1) and under
The transparent resin material that catch (1-2) is same intensity is processed.
5. a kind of explosion-proof water meter according to claim 4, it is characterised in that：In hollow cavity position in described table cover
The thickness of the thickness more than lower stop piece (1-2) of top surface on (1) is covered on hat type.
6. a kind of explosion-proof water meter according to claim 1 or 2 or 3, it is characterised in that：Under described lower stop piece (1-2) is
Concave arc piece.
7. a kind of explosion-proof water meter according to claim 4, it is characterised in that：Described lower stop piece (1-2) is lower concave arc piece.
8. a kind of explosion-proof water meter according to claim 5, it is characterised in that：Described lower stop piece (1-2) is lower concave arc piece.
9. a kind of explosion-proof water meter according to claim 4, it is characterised in that：(1) and lower stop piece (1- are covered on described hat type
2) ultrasonic bonding is passed through between.
10. a kind of explosion-proof water meter according to claim 5, it is characterised in that：(1) and lower stop piece are covered on described hat type
Pass through ultrasonic bonding between (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011647.8A CN106768142A (en) | 2017-01-07 | 2017-01-07 | A kind of explosion-proof water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011647.8A CN106768142A (en) | 2017-01-07 | 2017-01-07 | A kind of explosion-proof water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768142A true CN106768142A (en) | 2017-05-31 |
Family
ID=58951115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710011647.8A Pending CN106768142A (en) | 2017-01-07 | 2017-01-07 | A kind of explosion-proof water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912380A (en) * | 2020-07-27 | 2020-11-10 | 杭州乾博科技有限公司 | Water meter freezing degree calculation method and system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184194Y (en) * | 1994-01-02 | 1994-11-30 | 宜兴市分水自来水厂 | Anti-freeze water meter |
| CN2443348Y (en) * | 2000-09-08 | 2001-08-15 | 罗伟 | Anti-freezing watermeter |
| KR200375793Y1 (en) * | 2004-11-11 | 2005-03-11 | 강순이 | Water meter with freeze protection device. |
| CN201032458Y (en) * | 2007-03-09 | 2008-03-05 | 吴福康 | Anti-frozen crack watermeter |
| CN101170168A (en) * | 2006-10-27 | 2008-04-30 | 深圳市比克电池有限公司 | Covering board component with explosion-proof function |
| CN202793499U (en) * | 2012-04-25 | 2013-03-13 | 昆明理工大学 | Frosting-prevention water meter |
| CN205175482U (en) * | 2015-09-18 | 2016-04-20 | 成都兴联宜科技有限公司 | Easily read formula photoelectric direct reading teletransmission valve accuse water gauge |
| CN205642515U (en) * | 2016-05-19 | 2016-10-12 | 江西百川水表有限公司 | Anti -freezing water meter |
| CN106052786A (en) * | 2016-07-26 | 2016-10-26 | 宁波水表股份有限公司 | Anti-freeze water meter |
| CN206321291U (en) * | 2017-01-07 | 2017-07-11 | 高晓勇 | A kind of explosion-proof water meter |
-
2017
- 2017-01-07 CN CN201710011647.8A patent/CN106768142A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184194Y (en) * | 1994-01-02 | 1994-11-30 | 宜兴市分水自来水厂 | Anti-freeze water meter |
| CN2443348Y (en) * | 2000-09-08 | 2001-08-15 | 罗伟 | Anti-freezing watermeter |
| KR200375793Y1 (en) * | 2004-11-11 | 2005-03-11 | 강순이 | Water meter with freeze protection device. |
| CN101170168A (en) * | 2006-10-27 | 2008-04-30 | 深圳市比克电池有限公司 | Covering board component with explosion-proof function |
| CN201032458Y (en) * | 2007-03-09 | 2008-03-05 | 吴福康 | Anti-frozen crack watermeter |
| CN202793499U (en) * | 2012-04-25 | 2013-03-13 | 昆明理工大学 | Frosting-prevention water meter |
| CN205175482U (en) * | 2015-09-18 | 2016-04-20 | 成都兴联宜科技有限公司 | Easily read formula photoelectric direct reading teletransmission valve accuse water gauge |
| CN205642515U (en) * | 2016-05-19 | 2016-10-12 | 江西百川水表有限公司 | Anti -freezing water meter |
| CN106052786A (en) * | 2016-07-26 | 2016-10-26 | 宁波水表股份有限公司 | Anti-freeze water meter |
| CN206321291U (en) * | 2017-01-07 | 2017-07-11 | 高晓勇 | A kind of explosion-proof water meter |
Non-Patent Citations (1)
| Title |
|---|
| 盛锦煊: "介绍一种防冻水表", 给水排水, no. 02, pages 40 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912380A (en) * | 2020-07-27 | 2020-11-10 | 杭州乾博科技有限公司 | Water meter freezing degree calculation method and system |
| CN111912380B (en) * | 2020-07-27 | 2022-12-06 | 杭州乾博科技有限公司 | Water meter freezing degree calculation method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203880095U (en) | Pressure resisting type U-shaped spring energy accumulation lip-shaped sealing ring | |
| CN204879013U (en) | Low temperature pneumatic ball valve packing structure | |
| CN106768142A (en) | A kind of explosion-proof water meter | |
| CN206321291U (en) | A kind of explosion-proof water meter | |
| CN206353044U (en) | A kind of explosion-proof water meter | |
| CN106768141A (en) | A kind of explosion-proof water meter | |
| CN206387460U (en) | Explosion-proof water meter | |
| CN202381683U (en) | Spring energy storage self-tightening seal ring | |
| CN208845711U (en) | A kind of hydraulic cylinder piston rod anti-extrusion dustband and hydraulic cylinder | |
| CN201772971U (en) | Pressure gauge isolator | |
| CN204067469U (en) | A kind of explosion-proof equipment of lithium battery | |
| CN203286129U (en) | Valve seat seal long in service life and good in sealing effect | |
| CN203809690U (en) | Flexible graphite low-leakage combined molded packing | |
| CN206682296U (en) | Shelving sealing ring | |
| CN204647537U (en) | The box-like filling-material structure of a kind of low temperature valve valve rod group | |
| CN201547232U (en) | Leak-proof sealing gasket | |
| CN201420853Y (en) | Sealing gasket | |
| CN202137884U (en) | Sealing device for sealing dies on vulcanization forming machine | |
| CN204198606U (en) | A kind of multi-layer vacuum glass | |
| CN219570842U (en) | Composite sealing gasket | |
| CN209508212U (en) | A kind of Combined fermentation pot circle visor | |
| CN201764061U (en) | Metal hard sealing structure of two-sheet ball valve | |
| CN211039670U (en) | High-pressure rubber sealing ring | |
| CN211253565U (en) | Flexible glue seal film | |
| CN205089831U (en) | Cylindrical roller bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |