CN106090373A - Upper plug type glass-tube liquid level meter and liquidometer valve body - Google Patents
Upper plug type glass-tube liquid level meter and liquidometer valve body Download PDFInfo
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- CN106090373A CN106090373A CN201610408582.6A CN201610408582A CN106090373A CN 106090373 A CN106090373 A CN 106090373A CN 201610408582 A CN201610408582 A CN 201610408582A CN 106090373 A CN106090373 A CN 106090373A
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- valve body
- plug
- glass tubing
- liquidometer
- lower valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to chemical mechanical equipment technical field, particularly relate to a kind of upper plug type glass-tube liquid level meter and liquidometer valve body.The invention provides a kind of liquidometer valve body, it includes valve body body, valve body body includes the upper valve body body that is connected respectively and lower valve body body with glass tubing two ends, upper valve body body and lower valve body body all include main body and plug, on glass tubing, one end of close upper valve body body is provided with the plug of upper valve body body, and the plug of upper valve body body is used for inserting glass tubing；It is provided with the plug of lower valve body body near lower valve body body one end on glass tubing.During installation, glass tubing can insert liquidometer valve body from the plug of upper valve body body, reduces liquid level tube length and cuts out requirement；Being located at the plug of lower valve body body can be with deslagging with enter hairbrush when cleaning, it is not necessary to clear up after dismounting, and the liquidometer valve body in the application, simple in construction, simple installation, it is adaptable to the level gauging in the fields such as PETROLEUM PROCESSING, chemical industry, boats and ships and boiler.
Description
Technical field
The present invention relates to chemical mechanical equipment technical field, particularly relate to a kind of upper plug type glass-tube liquid level meter and liquidometer
Valve body, is specifically related to that a kind of mounting or dismounting are simple and the upper plug type glass-tube liquid level meter of easy to clean glass tubing and liquidometer valve body.
Background technology
Existing liquidometer valve body, is primarily present three below problem.One, it is difficult to change glass tubing, although setting of valve body
Meter already has accounted for not tearing flange open just can change glass tubing, but the length and cutting to glass tubing requires height, and general factory does not all have
Having the glazier of specialty, glass tubing cutting is uneven, thus causes in actual Renewal process, and major part all must tear flange open, tears method open
Also needing to clear tank before orchid, be also commonly encountered bolt rust dead (palpus workmen cuts by saw is manual), maintenance cost is high, and expends
Time is long, affects the normal production of factory；Two, it is not easily cleaned glass tubing, dirty, especially after level gauge glass pipe life-time service
For in the sun can the medium of variable color, existing valve body cleaning glass tubing all must dismantle glass tubing, glass in unloading process
Pipe is also easy to damaged；Three, encapsulant not solvent resistant, gauge glass valve body (being commonly called as cock) currently on the market is nearly all
Designing for boiler water tank, glass tubing uses rubber ring set to seal, and the rubber of use the most not organic solvent-resistant is used during installation
Teflin tape (raw material band) twines rubber ring set, often leaks, and has leaked and must unload glass tubing process sealing.To sum up, existing liquid
There are the problems referred to above in position meter valve body, it is impossible to meets the demand of chemical industry, and the most undesirable for the effect of other industry.
Summary of the invention
(1) to solve the technical problem that
It is an object of the invention to: provide a kind of mounting or dismounting simple and the upper plug type glass-tube liquid level meter of easy to clean glass tubing and liquid
Position meter valve body, with solve the precision that glass tubing cut out by existing liquidometer valve body high, in installation process the most damaged and
It is not easily cleaned the problem of impurity in glass tubing.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of liquidometer valve body, it includes valve body body, described valve
Body body includes the upper valve body body that is connected respectively and lower valve body body with described glass tubing two ends, described upper valve body body and under
Valve body body all includes main body and plug, and on described glass tubing, the one end near described upper valve body body is provided with described upper valve body originally
The plug of body, the plug of described upper valve body body is used for inserting described glass tubing；On described glass tubing near described lower valve body originally
Body one end is provided with the plug of described lower valve body body.
Wherein, the plug diameter of described upper valve body body is more than the external diameter of described glass tubing；The silk of described lower valve body body
Stifled diameter is equal with the internal diameter of described glass tubing.
Wherein, the plug diameter of described upper valve body body and lower valve body body is all higher than the external diameter of described glass tubing.
Wherein, the plug of described upper valve body body and lower valve body body all uses O to seal.
Wherein, described upper valve body body and lower valve body body are equipped with black box, described black box include by interior extremely
Outer enclosing successively is located at the O of described glass tubing outer wall, pressure ring and gland, and described gland is close with described main body by nut
Side in the middle part of described glass tubing is fixing to be connected.
Wherein, described upper valve body body and lower valve body body all include for tank connected flange, described flange and institute
State and between main body, be provided with valve.
Wherein, described valve is stop valve.
Wherein, described valve is plug valve.
Wherein, the side of described lower valve body body is provided with pollution discharging plug corresponding to described plug valve.
Present invention also offers a kind of upper plug type glass-tube liquid level meter, it includes above-mentioned liquidometer valve body.
(3) beneficial effect
The technique scheme of the present invention has the advantage that and the invention provides a kind of liquidometer valve body, this liquidometer
Valve body it include upper valve body body that valve body body, valve body body include being connected respectively and lower valve body body with glass tubing two ends,
Upper valve body body and lower valve body body all include main body and plug, and on glass tubing, the one end near upper valve body body is provided with upper valve body
The plug of body, the plug of upper valve body body is used for inserting glass tubing；It is provided with lower valve near lower valve body body one end on glass tubing
The plug of body body.Using the liquidometer valve body that the application provides, during installation, glass tubing can insert from the plug of upper valve body body
Liquidometer valve body, reduces liquid level tube length and cuts out requirement, shortens the mounting or dismounting cycle, is conducive to ensureing having of factory work
Sequence is carried out；Being located at the plug of lower valve body body can be with deslagging with enter hairbrush when cleaning, it is not necessary to clear up after dismounting, it is to avoid glass
Pipe sustains damage in unloading process, reduces the liquidometer valve body in production cost, and the application, simple in construction, installs letter
Just, practical, it is easy to promote the use of, it is adaptable to PETROLEUM PROCESSING, chemical industry, pharmacy, electric power, papermaking, metallurgy, boats and ships and boiler etc.
Level gauging in field.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquidometer valve body in the present invention a kind of upper plug type glass-tube liquid level meter embodiment one；
Fig. 2 is the concrete structure schematic diagram of stop valve in Fig. 1；
Fig. 3 is the structural representation of liquidometer valve body in the present invention a kind of upper plug type glass-tube liquid level meter embodiment two；
Fig. 4 is the concrete structure schematic diagram of plug valve in Fig. 3.
In figure: 1: flange；2: upper valve body body；3,8: plug；4:O type circle；5: nut；6: pressure ring；7: glass tubing；9: under
Valve body body；10: stop valve；11: plug valve；12: pollution discharging plug.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
Embodiment one
As shown in Figure 1 to Figure 2, a kind of liquidometer valve body for fixedly mounting glass tubing 7 that the embodiment of the present invention provides,
This liquidometer valve body includes upper valve body body 2 that valve body body, valve body body include being connected respectively and lower valve with glass tubing 7 two ends
Body body 9, upper valve body body 2 and lower valve body body 9 all include main body and plug, near the one of upper valve body body 2 on glass tubing 7
End is provided with the plug 3 of upper valve body body 2, and the plug 3 of upper valve body body 2 is used for inserting glass tubing 7；Near lower valve on glass tubing 7
Body body 9 one end is provided with the plug 8 of lower valve body body 9.When mounted so that glass tubing 7 can be inserted vertically downward into juice level indicator valve
Body, reduces glass tubing 7 length and cuts out requirement, shortens the mounting or dismounting cycle, is conducive to ensureing carrying out in order of factory work；
During cleaning, open the plug 8 of lower valve body body 9, stretch into hairbrush from the plug mouth of lower valve body body 9 and carry out the cleaning of glass tubing 7
Operation, it is not necessary to clear up after dismounting, it is to avoid glass tubing sustains damage in unloading process, reduces production cost, and the application
In liquidometer valve body, simple in construction, practical, it is easy to promote the use of, it is adaptable to PETROLEUM PROCESSING, chemical industry, pharmacy, electric power,
Level gauging in the fields such as papermaking, metallurgy, boats and ships and boiler.
Preferably, in the present embodiment, plug 3 diameter of upper valve body body 2 is more than the external diameter of glass tubing 7, and lower valve body is originally
Plug 8 diameter of body 9 is equal to the internal diameter of glass tubing 7.Particularly, plug 3 diameter of upper valve body body 2 also may be slightly larger than glass tubing
The external diameter of 7 so that glass tubing 7 can be inserted vertically downward in liquidometer valve body, so reduce to glass tubing 7 length and cut out want
Ask；Plug 8 diameter of lower valve body body 9 is equal or close with the internal diameter of glass tubing 7.Wherein, be provided with in lower valve body body 9 for
The boss of fixing spacing glass tubing 7, during installation, the glass tubing 7 plug 3 from upper valve body body 2 is downwardly into, glass tubing 7
Lower end terminates in the boss in lower valve body body 9, and wherein boss is positioned at the top of lower valve body body 9 liquid outlet.
What deserves to be explained is, the material of the liquidometer valve body in the application typically selects carbon steel, rustless steel or plastics, carbon steel
Preservative treatment must be carried out, including turning black, turn blue, baking vanish, zinc-plated, nickel plating, nickel plating phosphorus, alloy plating.
Further, for improving sealing property, the plug 3 of upper valve body body 2 and the plug 8 of lower valve body body 9 all use O
Type circle seals.Glass tubing 7 in the application, inserts from the plug 3 of upper valve body body 2 during installation, from lower valve body body 9 during cleaning
Plug 8 insert hairbrush, plug 3, plug 8 are respectively with the intersubjective design gaps of upper valve body body 2 and lower valve body body 9 relatively
Little, rubber o-ring can be used to seal, according to using medium difference can use various rubber, selection standard specification O model,
Sealing ring is broken easily to be bought and changes.
In installation process, first with external diameter fastener for connection upper valve body body 2 the same with glass tubing 7 and lower valve body body
9, by the flange 1 on liquidometer valve body and the Flange joint on tank into, steel pipe is changed after welding glass tubing 7 again.Preferably, with
The flange 1 of the Flange joint on tank, generally DN15 or DN20, it would however also be possible to employ loose joint connects.
Specifically, upper valve body body 2 and lower valve body body 9 are equipped with black box, and black box includes depending on from the inside to the outside
Secondary enclosing is located at the O of glass tubing 7 outer wall, pressure ring and gland, and gland is by the middle part of glass tubing 7 close in nut and main body
Side is fixing to be connected, and simple in construction is easy for installation, and the range of choice of O is big and market circulation is strong, it is easy to buy and more
Change.
Specifically, upper valve body body 2 and lower valve body body 9 are used to and tank connected flange 1, between flange 1 and main body
It is provided with valve.Valve is the control parts in fluid delivery system, has cut-off, regulation, water conservancy diversion, prevents adverse current, voltage stabilizing, shunting
Or the function such as overflow pressure relief.In the present embodiment, by arranging the Fluid Volume that valve regulates in glass tubing.
Preferably, valve is stop valve 10.Stop valve 10 during opening and closing between sealing surface frictional force little, relatively more resistance to
With, Lift is little, easy to manufacture, easy to maintenance.
Preferably, valve is plug valve 11, and concrete structure schematic diagram is as shown in Figure 3 to Figure 4.Plug valve 11 simple in construction,
Switch is rapid, fluid resistance is little.Further, the side of lower valve body body 9 is provided with pollution discharging plug 12 corresponding to plug valve 11.Clearly
During reason, the fluid passage at plug valve 11 place can be passed through cleaning liquid to wash away plug valve 11, will clean after sewage pass through
Outside pollution discharging plug 12 exits valve body, it is beneficial to maintain the normal use of liquidometer.
In the present invention, the glass tubing 7 in upper plug type glass-tube liquid level meter in the application can replace to other materials,
Such as resin materials such as politef, hard polyethylene, or polypropylene tube.Use the liquidometer valve body in the application, to glass tubing 7
Length and the required precision of cutting relatively low, it is ensured that flange need not be torn when unloading glass tubing open.During cleaning glass tubing, can pull down
The plug 8 of lower valve body body 9, inserts hairbrush cleaning.Wherein, O sealing member can be selected for standard component, if damaged, easily buys
Arrive.
Particularly, the main body of upper valve body body 2 and lower valve body body 9 is respectively provided with the section of intubating for installing glass tubing 7.?
In the present embodiment, the specification of glass tubing 7 typically selects φ 18, φ 20 or φ 22.Glass tubing and the dimensional fits of liquidometer valve body,
The section of intubating diameter is than glass tube external diameter big 2～3mm, and the aperture (diameter) of pressure ring is than glass tubing big 0.5～1mm.Due to the application
The feature of liquidometer valve body, allows length and standard value deviation 10mm of glass tubing during design.Wherein, O sealing member uses
Quality of rubber materials is made, and selecting can be with the ethylene propylene diene rubber of resistance to various Chemical Solvents；Silicon is used when operating temperature is more than 80 DEG C
Rubber, fluorubber.
Below liquidometer valve body is used to actual production, is specifically described:
The thick products pot of thiophene process units, due to aqueous, water and thiophene insoluble (thiophene is in lower floor), therefore glass can only be used
Glass pipe liquidometer, a tank body sets four liquidometers altogether, liquid level during for observing different liquid level and interface.Thiophene is shown in light
Degeneration, about one month glass tubing inner surface have just filled black solid, it is necessary to cleaning glass tubing.Use commercially available liquidometer
Valve body, each cleaning all must dismantle glass tubing, and majority must tear flange open, and sealing rubber ring is broken and can't buy, the most bothersome,
Impact produces.Using the liquidometer valve body of the present invention, material selection stainless steel 304, the external diameter of glass tubing is φ 22, the hole of pressure ring
Footpath is φ 22.5, and the diameter of the main body interpolation pipeline section of upper valve body body 2 and lower valve body body 9 is φ 24, and O uses silicon rubber
Glue is made, and using effect is the best, and glass tubing is easy to cleaning and changes.
Thiophene process units product three phase separator, medium be gas cure hydrogen, water (upper strata, containing sulfur powder),
Thick thiophene (lower floor, maroon), if two gauge glass, is liquid level meter above, is level meters below.Aborning, glass
Pipe internal surface is just stuck with paste in the dust for one day by sulfur powder, and commercially available valve body cannot meet production requirement.Use the juice level indicator valve of the present invention
Body, material selection stainless steel 304, the external diameter of glass tubing is φ 32, and the aperture of pressure ring is φ 32.5, upper valve body body 2 and lower valve
The diameter of the main body interpolation pipeline section of body body 9 is φ 34, and O uses silicone rubber to make, and using effect is the best, and glass
Pipe is easy to cleaning and changes.
Present invention also offers a kind of upper plug type glass-tube liquid level meter, including above-mentioned liquidometer valve body.Wherein, glass tubing liquid
Glass tubing in the meter of position is except with in addition to glass material, it is also possible to substitute by other material, as politef or firmly polyethylene or
The resin materials such as polypropylene tube.Use the liquidometer valve body in the application, it is not necessary to dismounting flange just can be installed and dismounting glass tubing,
And it is relatively low to the length of glass tubing and the required precision of cutting；Meanwhile, can be by opening the plug being located at lower valve body body, with hair
Brush is cleaned, it is to avoid be damaged in unloading process；In addition, use O as sealing member, highly versatile, close
Seal effective, easily buy and change.
Embodiment two
Preferably, in the present embodiment, the diameter of the plug of upper valve body body 2 and lower valve body body 9 is all higher than glass tubing 7
External diameter.When mounted so that glass tubing 7 can be downwardly into from the plug 3 of upper valve body body 2, again can be from lower valve body body 9
Plug 8 be inserted upwardly into, bring convenience to users.Other technical scheme technical scheme a kind of with embodiment is identical, for
Avoid repeating, do not do extra elaboration at this.
In sum, the invention provides a kind of liquidometer valve body, this liquidometer valve body it include valve body body, valve body this
Body includes that the upper valve body body being connected with glass tubing two ends respectively and lower valve body body, upper valve body body and lower valve body body all wrap
Including main body and plug, on glass tubing, one end of close upper valve body body is provided with the plug of upper valve body body, the silk of upper valve body body
Block up for inserting glass tubing；It is provided with the plug of lower valve body body near lower valve body body one end on glass tubing.Employing is the application carry
The liquidometer valve body of confession, during installation, glass tubing can insert liquidometer valve body from the plug of upper valve body body, reduces liquid level tube
Length and cut out requirement, shortens the mounting or dismounting cycle, is conducive to ensureing carrying out in order of factory work；It is located at the silk of lower valve body body
Can be with deslagging and enter hairbrush when getting lodged in cleaning, it is not necessary to clear up after dismounting, it is to avoid glass tubing sustains damage in unloading process, fall
Liquidometer valve body in low production cost, and the application, simple in construction, simple installation, practical, it is easy to promote the use of,
Level gauging be applicable to the fields such as PETROLEUM PROCESSING, chemical industry, pharmacy, electric power, papermaking, metallurgy, boats and ships and boiler.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a liquidometer valve body, is used for fixing glass tubing, it is characterised in that: include that valve body body, described valve body body include
The upper valve body body being connected with described glass tubing two ends respectively and lower valve body body, described upper valve body body and lower valve body body are equal
Including main body and plug, on described glass tubing, one end of close described upper valve body body is provided with the plug of described upper valve body body,
The plug of described upper valve body body is used for inserting described glass tubing；It is provided with near described lower valve body body one end on described glass tubing
The plug of described lower valve body body.
Liquidometer valve body the most according to claim 1, it is characterised in that: the plug diameter of described upper valve body body is more than institute
State the external diameter of glass tubing；The plug diameter of described lower valve body body is equal with the internal diameter of described glass tubing.
Liquidometer valve body the most according to claim 1, it is characterised in that: described upper valve body body and the silk of lower valve body body
Stifled diameter is all higher than the external diameter of described glass tubing.
4. according to the liquidometer valve body described in Claims 2 or 3, it is characterised in that: described upper valve body body and lower valve body body
Plug all use O to seal.
Liquidometer valve body the most according to claim 1, it is characterised in that: described upper valve body body and lower valve body body are all provided with
Black box, described black box is had to include enclosing the most successively and be located at the O of described glass tubing outer wall, pressure ring and pressure
Lid, described gland is connected by the side in the middle part of nut described glass tubing close with described main body is fixing.
Liquidometer valve body the most according to claim 1, it is characterised in that: described upper valve body body and lower valve body body all wrap
Include for tank connected flange, be provided with valve between described flange and described main body.
Liquidometer valve body the most according to claim 6, it is characterised in that: described valve is stop valve.
Liquidometer valve body the most according to claim 6, it is characterised in that: described valve is plug valve.
Liquidometer valve body the most according to claim 8, it is characterised in that: the side of described lower valve body body is corresponding to described
Plug valve is provided with pollution discharging plug.
10. a upper plug type glass-tube liquid level meter, it is characterised in that: include the liquidometer valve body as described in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408582.6A CN106090373A (en) | 2016-06-12 | 2016-06-12 | Upper plug type glass-tube liquid level meter and liquidometer valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408582.6A CN106090373A (en) | 2016-06-12 | 2016-06-12 | Upper plug type glass-tube liquid level meter and liquidometer valve body |
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| Publication Number | Publication Date |
|---|---|
| CN106090373A true CN106090373A (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610408582.6A Pending CN106090373A (en) | 2016-06-12 | 2016-06-12 | Upper plug type glass-tube liquid level meter and liquidometer valve body |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2112806U (en) * | 1991-03-05 | 1992-08-12 | 冶金工业部鞍山热能研究院设备研制厂 | Martin furnace vapouration cooling water level indicator |
| CN2148946Y (en) * | 1993-02-18 | 1993-12-08 | 浙江佑利工程塑料管道总厂 | Fluid level gauge |
| US5442959A (en) * | 1994-02-09 | 1995-08-22 | Mills; Stephen K. | Shielded tubular sight gauge |
| CN2246305Y (en) * | 1995-02-22 | 1997-01-29 | 荥阳市中亚阀门集团公司 | Liquid level gauge controlled by ball valve |
| CN200996851Y (en) * | 2007-01-12 | 2007-12-26 | 冯长安 | Liquid-level gauge of water-jacketing stove |
| CN201364185Y (en) * | 2009-03-13 | 2009-12-16 | 翟清梅 | Freeze-proof water jacket furnace level gauge |
| CN201429445Y (en) * | 2009-07-10 | 2010-03-24 | 温州金鑫生化阀门有限公司 | Energy-saving glass tube level gauge |
| CN201867219U (en) * | 2010-05-20 | 2011-06-15 | 孙伟 | Liquid level meter for glass tube |
| CN204902936U (en) * | 2015-08-12 | 2015-12-23 | 瑞大集团有限公司 | Colored glass liquid level gauge |
| CN205689859U (en) * | 2016-06-12 | 2016-11-16 | 盐城市特一密封机械制造有限公司 | Upper plug type glass-tube liquid level meter and liquidometer valve body |
-
2016
- 2016-06-12 CN CN201610408582.6A patent/CN106090373A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2112806U (en) * | 1991-03-05 | 1992-08-12 | 冶金工业部鞍山热能研究院设备研制厂 | Martin furnace vapouration cooling water level indicator |
| CN2148946Y (en) * | 1993-02-18 | 1993-12-08 | 浙江佑利工程塑料管道总厂 | Fluid level gauge |
| US5442959A (en) * | 1994-02-09 | 1995-08-22 | Mills; Stephen K. | Shielded tubular sight gauge |
| CN2246305Y (en) * | 1995-02-22 | 1997-01-29 | 荥阳市中亚阀门集团公司 | Liquid level gauge controlled by ball valve |
| CN200996851Y (en) * | 2007-01-12 | 2007-12-26 | 冯长安 | Liquid-level gauge of water-jacketing stove |
| CN201364185Y (en) * | 2009-03-13 | 2009-12-16 | 翟清梅 | Freeze-proof water jacket furnace level gauge |
| CN201429445Y (en) * | 2009-07-10 | 2010-03-24 | 温州金鑫生化阀门有限公司 | Energy-saving glass tube level gauge |
| CN201867219U (en) * | 2010-05-20 | 2011-06-15 | 孙伟 | Liquid level meter for glass tube |
| CN204902936U (en) * | 2015-08-12 | 2015-12-23 | 瑞大集团有限公司 | Colored glass liquid level gauge |
| CN205689859U (en) * | 2016-06-12 | 2016-11-16 | 盐城市特一密封机械制造有限公司 | Upper plug type glass-tube liquid level meter and liquidometer valve body |
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Application publication date: 20161109 |