CN104266687B - Horizontal screw wing type water meter - Google Patents
Horizontal screw wing type water meter Download PDFInfo
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- CN104266687B CN104266687B CN201410445225.8A CN201410445225A CN104266687B CN 104266687 B CN104266687 B CN 104266687B CN 201410445225 A CN201410445225 A CN 201410445225A CN 104266687 B CN104266687 B CN 104266687B
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Abstract
The invention discloses a kind of horizontal screw wing type water meter, the side of impeller (7) is the first wheel shaft (7.1) with impeller (7) integral molding, first wheel shaft (7.1) is in circular cone shape near one end of impeller (7), the opposite side tight fit of impeller (7) is provided with the second wheel shaft (9), and the second wheel shaft (9) is the worm shaft for transmission mechanism；It also includes two balance weights (8), and two balance weights (8) are respectively arranged in the installation cavity body of the both sides of impeller (7)；The quantity of the blade (7.2) of impeller (7) is 9, and the helical pitch of blade (7.2) is 350~400mm, and (side surface upper part of 7.2 sides is provided with inclined plane (7.2.1) to blade.The horizontal screw wing type water meter compact conformation, impeller rotation balance more preferably, the covering property between movement and shell it is good, negotiability is bigger, precision is higher.
Description
Technical field
The present invention relates to water meter field, more particularly to a kind of horizontal screw wing type water meter.
Background technology
Horizontal screw wing type water meter is one kind of velocity type water meter, is adapted to be used in heavy caliber pipeline, is characterized in circulation
Ability is big, the pressure loss is small.When water flow into water meter after, in the axial direction impact impeller rotate around the axis after flow out, impeller turn
Speed is directly proportional to water velocity, by after transmission mechanism transmission, being shown in instruction device by the water inventory of water meter.Spiral type
Water meter is divided into horizontal screw wing type water meter and the major class of vertical Woltmann water meter two.Most of industrial table that the country is used all is water
Flat helical vane type water meter.Horizontal screw wing type water meter, because of its metered flow wide ranges, component universality is strong, installation and maintenance can be not
Cutting off the water do not tear open the features such as carry out in the case of table, welcome by user.Existing horizontal screw wing dismantling water meter is main by two
End is respectively equipped with the housing of water inlet and delivery port, mounting seat, preceding rectifier, rear rectifier, impeller, transmission mechanism and is located at
The count table of mounting seat upper end is removable to be formed by connecting.Impeller can hang between mounting seat and air deflector under current balanced action
Sky rotation, that is to say, that the smooth rotation of impeller is to important ginsengs such as the range ability of water meter, sensitivity, precision and negotiabilities
Number has a significant impact.Wherein, once the wheel shaft of impeller occurs excessive wear, the rotation of impeller will occur beat, so that sternly
Ghost image rings the rotary balance of impeller.Therefore, the rotating shaft anti-wear performance of impeller is also particularly important.But horizontal spiral shell of the prior art
Concern of the wing formula water meter to the rotary balance of impeller be not obvious, then the negotiability and precision of existing horizontal screw wing type water meter
It is difficult to have breakthrough, as technical bottleneck.And the covering property between the shell and movement of the horizontal screw wing type water meter of prior art is simultaneously
It is bad, it is impossible to ensure that water is concentrated through impeller, so as to also have impact on the negotiability and precision of water meter to a certain extent.
The content of the invention
The technical problems to be solved by the invention are：There is provided a kind of compact conformation, impeller rotation balance more preferably, movement
Covering property and shell between is good, negotiability bigger, precision horizontal screw wing type water meter higher.
The present invention the used technical scheme that solves the above problems is：A kind of horizontal screw wing type water meter, including shell and machine
Core, described movement includes mounting seat, preceding rectifier, rear rectifier, impeller, the count table located at mounting seat upper end and connection leaf
Transmission mechanism between wheel and count table, described preceding rectifier and rear rectifier is respectively arranged on the both sides of described mounting seat,
Described impeller is installed in the cavity formed between preceding rectifier and rear rectifier, and the side of described impeller is and impeller one
First wheel shaft of body formula shaping, and described impeller and the first wheel shaft be made by PP, the first described wheel shaft is near impeller
One end is in circular cone shape, and the opposite side tight fit of described impeller is provided with the second wheel shaft, and the second described wheel shaft is for passing
The worm shaft of motivation structure；
It also includes two balance weights, and two balance weights are respectively arranged in the installation cavity body of the both sides of impeller；Each balance
It is equipped with the middle part of block for the mounting hole with the first wheel shaft or the second wheel shaft phase fit, the inner surface of each balance weight is equipped with
The a plurality of groove of radially even distribution, and the excircle of described balance weight edge along described groove axis direction
It is provided with the multiple square openings being connected with described groove；
The quantity of the blade of described impeller is 9, and the helical pitch of described blade is 350~400mm, and described blade is leaned on
The side surface upper part of the side of nearly second wheel shaft is provided with inclined plane.
Compared with prior art, the advantage of the invention is that：The side of the impeller of the horizontal screw wing type water meter is and impeller
First wheel shaft of integral molding, and impeller and the first wheel shaft be made by PP, the first wheel shaft is in circular cone near one end of impeller
Mesa-shaped, so, the torsional strength of the first wheel shaft is more preferable, advantageously in the rotary balance of impeller.Present invention additionally comprises setting respectively
Two balance weights in the installation cavity body of the both sides of impeller, the inner surface of each balance weight is equipped with many of radially even distribution
Bar groove, and the excircle of balance weight edge be provided with along the axis direction of groove multiple square openings for being connected with groove this
Sample, it is ensured that air during installation can smoothly be excluded along groove from square opening, it is to avoid the buoyancy of influence impeller, better ensures that
The balance of wheel rotation.And the quantity of the blade of impeller is 9, the helical pitch of blade is 350~400mm, and blade is near the
The side surface upper part of the side of great wheel arbor is provided with inclined plane, so, advantageously keeps rotary balance in impeller.
Preferably, the periphery wall of the pedestal of described mounting seat is circumferentially coated with the sealing gasket for taking the shape of the letter U, described seat
The periphery wall of body is provided with the seal groove mutually chimeric with the periphery wall of pedestal circumferentially arranged with raised line, the inner surface of sealing gasket；It is described
Shell be provided with the mounting groove matched with the shape of sealing gasket and for housing sealing gasket.So, sealing gasket is by mounting seat
Pedestal is coated completely, and sealing between shell is also more preferable, it is ensured that water is concentrated through impeller, further ensures water meter
Negotiability and certainty of measurement.
Preferably, symmetrically there are the projection of inwardly projecting setting, described projection in the both sides of the upper end of described sealing gasket
Inner surface be provided with draw-in groove, and described pedestal and upper base plate junction are symmetrically arranged on two with for matching with described draw-in groove
The fixture block of conjunction.So, sealing gasket is more tight with the chimeric of mounting seat, and difficult for drop-off, sealing effectiveness is more preferable.
Preferably, described transmission mechanism includes that the second wheel shaft, power transmission shaft and the fit that are provided with worm screw are installed on transmission
Axle bottom and the worm gear coordinated with worm engaging, the upper end of described power transmission shaft is connected with described count table.
Preferably, the side of described mounting hole is provided with location hole, the opposite side of described mounting hole is provided with locating dowel,
And the locating dowel of the first described balance weight is installed in the location hole of the second balance weight through the through hole fit on impeller.
Preferably, the angle between described inclined plane and the inwall of vertical of impeller is 25 °~45 °.
Preferably, in the cavity formed between described preceding rectifier and rear rectifier at the position of preceding rectifier
Adjustable plate is provided with, and described adjustable plate is provided with regulating block, the inwall of described preceding rectifier is provided with for engaging regulating block
Bayonet socket, the upper end of described adjustable plate is connected in the connector of regular hexagon by section with the regulating valve for calibration.
So, can with calibrated conveniently by adjustable plate, it is easy to adjust.
Preferably, the raw material that the second described wheel shaft is following number is made：PA12 80-100 parts, Al2O3 5-8
Part, glass fibre 5-15 parts, polyether-ether-ketone 5-15 parts, coupling agent 0.5-1 parts, antioxidant 0.8-1.5 parts, tetraethyl orthosilicate 1-5
Part, carbon black 5-10 parts.Described coupling agent is Silane coupling agent KH550.Described antioxidant is antioxidant B225 or antioxidant
One kind in B215.So, the weight of the second wheel shaft easily keeps balancing in rational scope with the first wheel shaft, and wear-resisting
Property more preferably, can effectively prevent impeller beat caused by the abrasion of the second wheel shaft, the rotary balance of impeller is more preferable.
Preferably, the preparation method of the second wheel shaft of horizontal screw wing type water meter of the invention is comprised the following steps：
1) by above-mentioned recipe ratio with after taking raw material, by PA12, Al2O3Glass fibre, polyether-ether-ketone, tetraethyl orthosilicate exists
It is well mixed in high-speed mixer and adds coupling agent, 45-60 DEG C is reacted 8-10 hours under inert gas shielding；
2) antioxidant and carbon black are subsequently adding, are well mixed, and above-mentioned compound is placed in 85~110 DEG C of baking ovens dry
1-3h；
3) by above-mentioned compound extruding pelletization on the twin screw extruder, gained pellet is processed into second in injector
Wheel shaft.
Brief description of the drawings
The structural representation (shell is decomposed with movement) of Fig. 1 horizontal screw wing type water meters of the invention.
The decomposition texture schematic diagram of Fig. 2 horizontal screw wing type water meters of the invention.
The structural representation of the balance weight of Fig. 3 horizontal screw wing type water meters of the present invention.
The dimensional structure diagram of the impeller of Fig. 4 horizontal screw wing type water meters of the present invention.
The cross section structure diagram of the impeller of Fig. 5 horizontal screw wing type water meters of the present invention.
The structural representation of the impeller of Fig. 6 horizontal screw wing type water meters of the present invention.
In Fig. 1-6：Rectification behind rectifier, 4 before 1 count table, 2 mounting seats, 2.1 upper cover plates, 2.2 pedestals, 2.3 fixture blocks, 3
Device, 5 sealing gaskets, 5.1 seal grooves, 5.2 projections, 5.3 draw-in grooves, 6 shells, 6.1 mounting grooves, 7 impellers, 7.1 first wheel shafts, 7.2 leaves
Piece, 7.2.1 inclined-planes, 8 balance weights, 8.1 mounting holes, 8.2 grooves, 8.3 square openings, 8.4 location holes, 8.5 locating dowels, 9 second wheels
Axle, 10 power transmission shafts, 11 adjustable plates, 11.1 regulating blocks.
Specific embodiment
Embodiments of the invention are further described below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, a kind of horizontal screw wing type water meter, including shell 6 and movement, described movement include mounting seat 2,
Biography between preceding rectifier, rear rectifier 4, impeller 7, the count table 1 located at the upper end of mounting seat 2 and connection impeller 7 and count table 1
Motivation structure, described preceding rectifier and rear rectifier 4 is respectively arranged on the both sides of described mounting seat 2, and described impeller 7 is installed on
In the cavity formed between preceding rectifier and rear rectifier 4, the side of described impeller 7 is the with the integral molding of impeller 7
One wheel shaft 7.1, and the described wheel shaft 7.1 of impeller 7 and first is made by PP, the first described wheel shaft 7.1 is near the one of impeller 7
End is in circular cone shape, and the opposite side tight fit of described impeller 7 is provided with the second wheel shaft 9, and the second described wheel shaft 9 is for passing
The worm shaft of motivation structure；
It also includes two balance weights 8, and two balance weights 8 are respectively arranged in the installation cavity body of the both sides of impeller 7；Each is put down
The middle part of weighing apparatus block 8 is equipped with for the mounting hole 8.1 with the first wheel shaft 7.1 or the phase fit of the second wheel shaft 9, each balance weight 8
Inner surface is equipped with a plurality of groove 8.2 of radially even distribution, and the excircle of described balance weight 8 edge along described
The axis direction of groove 8.2 be provided with the multiple square openings 8.3 being connected with described groove 8.2；
The quantity of the blade 7.2 of described impeller 7 is 9, and the helical pitch of described blade 7.2 is 350~400mm, described
Blade 7.2 be provided with inclined plane 7.2.1 near the side surface upper part of side of the second wheel shaft 9.
The periphery wall of the pedestal 2.2 of described mounting seat 2 is circumferentially coated with the sealing gasket 5 for taking the shape of the letter U, described pedestal
Circumferentially arranged with raised line 2.2.1, the inner surface of sealing gasket 5 is provided with mutually chimeric with the periphery wall of pedestal 2.2 close 2.2 periphery wall
Sealing groove 5.1；Described shell 6 is provided with the mounting groove 6.1 matched with the shape of sealing gasket 5 and for housing sealing gasket 5.
Symmetrically there is a projection 5.2 of inwardly projecting setting the both sides of the upper end of described sealing gasket 5, described projection 5.2
Inner surface is provided with draw-in groove 5.3, and described pedestal 2.2 and the junction of upper base plate 2.1 be symmetrically arranged on two with for it is described
The fixture block 2.3 that draw-in groove 5.3 is engaged.
Described transmission mechanism includes that the second wheel shaft 9, power transmission shaft 10 and the fit that are provided with worm screw are installed under power transmission shaft 10
Portion and the worm gear coordinated with worm engaging, the upper end of described power transmission shaft 10 is connected with described count table 1.
The side of described mounting hole 8.1 is provided with location hole 8.4, and the opposite side of described mounting hole 8.1 is provided with locating dowel
8.5, and the locating dowel 8.5 of the first described balance weight 8 is installed on determining for the second balance weight 8 through the through hole fit on impeller 7
In the hole 8.4 of position.
Angle between described inclined plane 7.2.1 and the inwall of vertical of impeller 7 is 25 °~45 °.
In the cavity formed between described preceding rectifier 3 and rear rectifier 4 tune is provided with the position of preceding rectifier 3
Section plate 11, and described adjustable plate 11 is provided with regulating block 11.1, the inwall of described preceding rectifier 3 is provided with for engaging regulation
The bayonet socket of block 11.1, the upper end of described adjustable plate 11 is in the connector and the regulating valve for calibrating of regular hexagon by section
It is connected.
Embodiment 1
The second described wheel shaft 9 is made for the raw material of following number：80 parts of PA12, Al2O35 parts, 5 parts of glass fibre,
5 parts of polyether-ether-ketone, 0.5 part of coupling agent, 0.8 part of antioxidant, 1 part of tetraethyl orthosilicate, 5 parts of carbon black.Described coupling agent is silane
Coupling agent KH550.Described antioxidant is the one kind in antioxidant B225 or antioxidant B215.
Preparation method is comprised the following steps：
1) by above-mentioned recipe ratio with after taking raw material, by PA12, Al2O3Glass fibre, polyether-ether-ketone, tetraethyl orthosilicate exists
It is well mixed in high-speed mixer and adds Silane coupling agent KH550,45-60 DEG C of reaction 8-10 is small under inert gas shielding
When；
2) antioxidant B225 and carbon black are subsequently adding, are well mixed, and above-mentioned compound is placed in 85~110 DEG C of baking ovens
Dry 1-3h；
3) by above-mentioned compound extruding pelletization on the twin screw extruder, gained pellet is processed into second in injector
Wheel shaft 9.
Embodiment 2
The second described wheel shaft 9 is made for the raw material of following number：85 parts of PA12, Al2O36 parts, 10 parts of glass fibre,
8 parts of polyether-ether-ketone, 0.7 part of coupling agent, 1.2 parts of antioxidant, 3 parts of tetraethyl orthosilicate, 9 parts of carbon black.
Preparation method is comprised the following steps：
1) by above-mentioned recipe ratio with after taking raw material, by PA12, Al2O3, glass fibre, polyether-ether-ketone, tetraethyl orthosilicate exists
It is well mixed in high-speed mixer and adds Silane coupling agent KH550,45-60 DEG C of reaction 8-10 is small under inert gas shielding
When；
2) antioxidant B215 and carbon black are subsequently adding, are well mixed, and above-mentioned compound is placed in 85~110 DEG C of baking ovens
Dry 1-3h；
3) by above-mentioned compound extruding pelletization on the twin screw extruder, gained pellet is processed into second in injector
Wheel shaft (9).
Embodiment 3
The second described wheel shaft 9 is made for the raw material of following number：100 parts of PA12, Al2O38 parts, glass fibre 15
Part, 15 parts of polyether-ether-ketone, 1 part of coupling agent, 1.5 parts of antioxidant, 5 parts of tetraethyl orthosilicate, 10 parts of carbon black.
Preparation method is comprised the following steps：
1) by above-mentioned recipe ratio with after taking raw material, by PA12, Al2O3Glass fibre, polyether-ether-ketone, tetraethyl orthosilicate exists
It is well mixed in high-speed mixer and adds Silane coupling agent KH550,45-60 DEG C of reaction 8-10 is small under inert gas shielding
When；
2) antioxidant B215 and carbon black are subsequently adding, are well mixed, and above-mentioned compound is placed in 85~110 DEG C of baking ovens
Dry 1-3h；
3) by above-mentioned compound extruding pelletization on the twin screw extruder, gained pellet is processed into second in injector
Wheel shaft (9).
By experimental test, it is used to be formulated the weight of the second wheel shaft processed with method in rational scope, holds
Easily keep balancing with the first wheel shaft, and wearability is more preferably, can effectively prevent impeller beat, impeller caused by the abrasion of the second wheel shaft
Rotary balance it is more preferable.
Below only highly preferred embodiment of the present invention is described, but is not to be construed as limiting the scope of the invention.This
Invention is not only limited to above example, and its concrete structure allows to change.All protection models in independent claims of the present invention
Interior made various change is enclosed to all fall in the scope of protection of the present invention.
Claims (10)
1. a kind of horizontal screw wing type water meter, including shell (6) and movement, described movement include mounting seat (2), preceding rectifier
(3), rear rectifier (4), impeller (7), the count table (1) located at mounting seat (2) upper end and connection impeller (7) and count table (1)
Between transmission mechanism, described preceding rectifier (3) and rear rectifier (4) be respectively arranged on the both sides of described mounting seat (2), institute
The impeller (7) stated is installed in the cavity formed between preceding rectifier (3) and rear rectifier (4), it is characterised in that：Described leaf
The side for taking turns (7) is the first wheel shaft (7.1) with impeller (7) integral molding, and described impeller (7) and the first wheel shaft
(7.1) it is made by PP, described the first wheel shaft (7.1) is in circular cone shape, described impeller (7) near one end of impeller (7)
Opposite side tight fit the second wheel shaft (9) is installed, described the second wheel shaft (9) is the worm shaft for transmission mechanism；
It also includes two balance weights (8), and two balance weights (8) are respectively arranged in the installation cavity body of the both sides of impeller (7)；Each
It is equipped with the middle part of balance weight (8) for the mounting hole (8.1) with the first wheel shaft (7.1) or the second wheel shaft (9) phase fit, each
The inner surface of balance weight (8) is equipped with a plurality of groove (8.2) of radially even distribution, and described balance weight (8) is cylindrical
The edge in week is provided with the multiple square openings being connected with described groove (8.2) along the axis direction of described groove (8.2)
(8.3)；
The quantity of the blade (7.2) of described impeller (7) is 9, and the helical pitch of described blade (7.2) is 350~400mm, institute
Side surface upper part of the blade (7.2) stated near the side of the second wheel shaft (9) is provided with inclined plane (7.2.1).
2. horizontal screw wing type water meter according to claim 1, it is characterised in that：The pedestal (2.2) of described mounting seat (2)
Periphery wall be circumferentially coated with the sealing gasket (5) for taking the shape of the letter U, the periphery wall of described pedestal (2.2) is circumferentially arranged with raised line
(2.2.1), the inner surface of sealing gasket (5) is provided with the seal groove (5.1) mutually chimeric with the periphery wall of pedestal (2.2)；Described is outer
Shell (6) is provided with the mounting groove (6.1) matched with the shape of sealing gasket (5) and for housing sealing gasket (5).
3. horizontal screw wing type water meter according to claim 2, it is characterised in that：The two of the upper end of described sealing gasket (5)
The inner surface that symmetrically there is the projection (5.2) of inwardly projecting setting, described projection (5.2) side is provided with draw-in groove (5.3), and described
The fixture block being symmetrically arranged on two with for being engaged with described draw-in groove (5.3) of pedestal (2.2) and upper base plate (2.1) junction
(2.3)。
4. horizontal screw wing type water meter according to claim 1, it is characterised in that：Described transmission mechanism includes being provided with worm screw
The second wheel shaft (9), power transmission shaft (10) and fit be installed on power transmission shaft (10) bottom and the worm gear coordinated with worm engaging, it is described
The upper end of power transmission shaft (10) be connected with described count table (1).
5. horizontal screw wing type water meter according to claim 1, it is characterised in that：The side of described mounting hole (8.1) sets
There is a location hole (8.4), the opposite side of described mounting hole (8.1) is provided with locating dowel (8.5), and described balance weight (8) are determined
Position post (8.5) is installed in the location hole of balance weight (8) (8.4) through the through hole fit on impeller (7).
6. horizontal screw wing type water meter according to claim 1, it is characterised in that：Described inclined plane (7.2.1) and impeller
(7) the angle between inwall of vertical is 25 °~45 °.
7. horizontal screw wing type water meter according to claim 1, it is characterised in that：Described preceding rectifier (3) and rear rectification
In the cavity formed between device (4) adjustable plate (11), and described adjustable plate (11) are provided with the position of preceding rectifier (3)
Regulating block (11.1) is provided with, the inwall of described preceding rectifier (3) is provided with the bayonet socket for engaging regulating block (11.1), described
Adjustable plate (11) upper end by section in regular hexagon connector with for calibration regulating valve be connected.
8. horizontal screw wing type water meter according to claim 1, it is characterised in that：Described the second wheel shaft (9) is following part
What several raw materials was made：PA12 80-100 parts, Al2O35-8 parts, glass fibre 5-15 parts, polyether-ether-ketone 5-15 parts, coupling agent
0.5-1 parts, antioxidant 0.8-1.5 parts, tetraethyl orthosilicate 1-5 parts, carbon black 5-10 parts.
9. horizontal screw wing type water meter according to claim 8, it is characterised in that：Described coupling agent is silane coupler
KH550；Described antioxidant is the one kind in antioxidant B225 or antioxidant B215.
10. a kind of preparation method of the second wheel shaft of horizontal screw wing type water meter as claimed in claim 8, it is characterised in that should
Method is comprised the following steps：
1) by above-mentioned recipe ratio with after taking raw material, by PA12, Al2O3, glass fibre, polyether-ether-ketone, tetraethyl orthosilicate is at a high speed
It is well mixed in mixer and adds coupling agent, 45-60 DEG C is reacted 8-10 hours under inert gas shielding；
2) antioxidant and carbon black are subsequently adding, are well mixed, and above-mentioned compound is placed in 85~110 DEG C of baking ovens dries 1-
3h；
3) by above-mentioned compound extruding pelletization on the twin screw extruder, gained pellet is processed into the second wheel shaft in injector
(9)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445225.8A CN104266687B (en) | 2014-09-03 | 2014-09-03 | Horizontal screw wing type water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445225.8A CN104266687B (en) | 2014-09-03 | 2014-09-03 | Horizontal screw wing type water meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104266687A CN104266687A (en) | 2015-01-07 |
| CN104266687B true CN104266687B (en) | 2017-07-11 |
Family
ID=52158228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410445225.8A Active CN104266687B (en) | 2014-09-03 | 2014-09-03 | Horizontal screw wing type water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104266687B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954171B (en) * | 2019-12-19 | 2021-06-04 | 江苏中苏智能制造有限公司 | Flowmeter convenient to clear up impeller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097723C (en) * | 1997-01-24 | 2003-01-01 | 美国仪表公司 | Gas turbine meter |
| CN201259433Y (en) * | 2008-07-02 | 2009-06-17 | 福州真兰水表有限公司 | Horizontal screw wing dismantling water meter |
| CN101258384B (en) * | 2005-09-08 | 2010-09-29 | M及Fc控股有限责任公司 | Turbine flowmeter |
| CN101858760A (en) * | 2010-04-26 | 2010-10-13 | 宁波东海仪表水道有限公司 | Spiral type water meter |
| CN204115776U (en) * | 2014-09-03 | 2015-01-21 | 宁波龙格尔仪表有限公司 | Horizontal screw wing type water meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1021344C2 (en) * | 2002-08-28 | 2004-03-02 | Imeter B V | Lubricator for a high pressure environment. |
-
2014
- 2014-09-03 CN CN201410445225.8A patent/CN104266687B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097723C (en) * | 1997-01-24 | 2003-01-01 | 美国仪表公司 | Gas turbine meter |
| CN101258384B (en) * | 2005-09-08 | 2010-09-29 | M及Fc控股有限责任公司 | Turbine flowmeter |
| CN201259433Y (en) * | 2008-07-02 | 2009-06-17 | 福州真兰水表有限公司 | Horizontal screw wing dismantling water meter |
| CN101858760A (en) * | 2010-04-26 | 2010-10-13 | 宁波东海仪表水道有限公司 | Spiral type water meter |
| CN204115776U (en) * | 2014-09-03 | 2015-01-21 | 宁波龙格尔仪表有限公司 | Horizontal screw wing type water meter |
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| Publication number | Publication date |
|---|---|
| CN104266687A (en) | 2015-01-07 |
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