CN207123310U - Large diameter helical vane type water meter impeller - Google Patents
Large diameter helical vane type water meter impeller Download PDFInfo
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- CN207123310U CN207123310U CN201720811958.8U CN201720811958U CN207123310U CN 207123310 U CN207123310 U CN 207123310U CN 201720811958 U CN201720811958 U CN 201720811958U CN 207123310 U CN207123310 U CN 207123310U
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- impeller
- upstream face
- water meter
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- axle
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Abstract
It the utility model is related to water meter field, more particularly to a kind of Large diameter helical vane type water meter impeller, including impeller axle, it is fixedly arranged on the impeller body and more than three helical blades for being located on impeller body surrounding of impeller axle lower end, the helical blade includes upstream face and back side, and the upstream face and back side are that the surface area of smooth curved surface and upstream face is more than the surface area of back side.The upstream face and back side of the impeller blade are that the lifting surface area of smooth curved surface and upstream face is more than the lifting surface area of back side, initial-flow can not only be reduced, and water flows through pressure suffered by out-of-date upstream face and is less than pressure suffered by back side, the current power upward to impeller during so as to reduce big flow, reduce abrasion, extend the service life of water meter.
Description
Technical field
Water meter field is the utility model is related to, more particularly to a kind of Large diameter helical vane type water meter impeller.
Background technology
Helical vane type water meter belongs to velocity type water meter, including horizontal screw wing type water meter and vertical Woltmann water meter, when water flows into
After water meter, being flowed out after impacting the impeller rotation of water meter spiral type in the axial direction, the rotating speed and water velocity of impeller are directly proportional, when
During big flow, current have a upward power to impeller, and flow is bigger, and the power is bigger, and this results in impeller and movement
Frictional force increases, and accelerates impeller shaft abrasion, influences service life, at present Large diameter (bore more than 40) helical vane type water meter
The service life of national standard is 2 years.
In addition the structural drag of existing impeller blade is big, and initial-flow is big, at present the initiating of Large diameter helical vane type water meter
Flow is about 60L/h, and regime flow is about 127L/h.
Utility model content
The purpose of this utility model is to overcome disadvantage mentioned above, there is provided a kind of Large diameter helical vane type water meter impeller, the leaf
The upstream face and back side of impeller blade are that the lifting surface area of smooth curved surface and upstream face is more than the lifting surface area of back side, no
It is only capable of reducing initial-flow, and water flows through pressure suffered by out-of-date upstream face and is less than pressure suffered by back side, so as to reduce
The current power upward to impeller during big flow, reduce abrasion, extend the service life of water meter.
What the utility model was realized in：A kind of Large diameter helical vane type water meter impeller, it is characterised in that：Including impeller
Axle, the impeller body for being fixedly arranged on impeller axle lower end and more than three helical blades for being located on impeller body surrounding, the spiral shell
Vane piece includes upstream face and back side, and the upstream face and back side are that the surface area of smooth curved surface and upstream face is big
In the surface area of back side.
In order to avoid producing vortex, the upstream face and back side are entered in the intersection of water inlet end and water side using fillet
Row transition.
Preferably, the section of the helical blade is made up of two smoothed curves, and the intersection at two curve both ends uses
Fillet carries out transition, and the direction of the distance of the upstream face to back side from water inlet end to water side gradually subtracts after first gradually increasing
Small and peak is located in the middle part of upstream face.
Preferably, the section of the helical blade is made up of two smoothed curves, and the intersection at two curve both ends uses
Fillet carries out transition, and the direction of the distance of the upstream face to back side from water inlet end to water side gradually subtracts after first gradually increasing
Small and peak is close to water side side.
In order to further reduce impeller drag, initial-flow is reduced, the water meter turbine also includes being fixedly arranged in impeller axle
The wolfram steel axle at end, it is arranged in impeller body and impeller axle body and there is the cavity of under shed, the sealing gasket being arranged in cavity
Piece and corundum axle sleeve, gasket seal and the corundum axle sleeve is fixedly arranged in the opening of cavity so that cavity forms closed cavity.
It is consistent during in order to ensure the center of gravity of impeller with design, improve the stability of wheel rotation, the impeller axle, impeller sheet
Body and helical blade use an injection molded, and the wolfram steel axle is in advance in the injection of impeller axle, impeller body and helical blade
Positioned in mould.
For prior art, the utility model has advantages below：
(1) Large diameter helical vane type water meter impeller provided by the utility model, the upstream face and back side of blade are flat
Sliding curved surface and the lifting surface area of upstream face are more than the lifting surface area of back side, can not only reduce initial-flow, and water flows through
Pressure suffered by out-of-date upstream face is less than the pressure suffered by back side, the current power upward to impeller during so as to reduce big flow,
Reduce abrasion, extend the service life of water meter；
(2) Large diameter helical vane type water meter impeller provided by the utility model, service life are existing up to more than 6 years
More than 3 times of water meter, initial-flow is about 20L/h, is the 1/3 of existing water meter, and regime flow is only 60L/h, and metering is more accurate；
(3) it is provided with Large diameter helical vane type water meter impeller provided by the utility model, impeller body and impeller axle closed
Cavity enables impeller to be suspended in water, reduces frictional force, further increases measuring accuracy；
(4) Large diameter helical vane type water meter impeller provided by the utility model, wolfram steel axle and corundum axle sleeve are used on impeller,
Wear small, further extend service life；
(5) Large diameter helical vane type water meter impeller provided by the utility model, impeller axle, impeller body and helical blade are adopted
It is consistent when effectively ensureing the center of gravity of impeller with design with an injection molded, the stability of wheel rotation is improved, is reduced eccentric
Abrasion, further extends service life；
(6) Large diameter helical vane type water meter impeller provided by the utility model, simple in construction, manufacturing cost is low, usability
Can be reliable, there are wide market prospects.
Brief description of the drawings
The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings：
Fig. 1 is the structural representation of the utility model Large diameter helical vane type water meter impeller；
Fig. 2 is the top view of the utility model Large diameter helical vane type water meter impeller；
Fig. 3 is A-A sectional views in Fig. 2；
Fig. 4 is the profile of the utility model helical blade another kind embodiment；
Fig. 5 is B-B sectional views in Fig. 2.
Symbol description in figure：1st, impeller axle, 2, impeller body, 3, helical blade, 31, upstream face, 32, back side, 4, tungsten
Steel shaft, 5, cavity, 6, gasket seal, 7, corundum axle sleeve.
Embodiment
The utility model content is described in detail with reference to Figure of description and specific embodiment：
Embodiment 1：
As shown in Figure 1-Figure 3, it is a kind of Large diameter helical vane type water meter impeller provided by the utility model, its feature exists
In：Including impeller axle 1, it is fixedly arranged on the impeller body 2 of the lower end of impeller axle 1 and more than three are located on the surrounding of impeller body 2
Helical blade 3, the helical blade 3 include upstream face 31 and back side 32, and the upstream face 31 and back side 32 are flat
Sliding curved surface and the surface area of upstream face 31 are more than the surface area of back side 32.According to F=P*S, due to the surface of upstream face 31
Product is more than the surface area of back side 32, and when impeller is immersed in water, the pressure suffered by upstream face 31 is less than suffered by back side 32
Pressure, make a concerted effort downward, the current power upward to impeller during so as to reduce big flow, reduce abrasion, extend the service life of water meter,
Water meter service life of the present utility model can be up to more than 6 years, and the service life of existing water meter national standard is only 2 years.
As shown in Figure 1, Figure 3, in order to avoid producing vortex, the upstream face 31 and back side 32 are in water inlet end and water side
Intersection using fillet carry out transition.
As shown in figure 3, the section of the helical blade 3 is made up of two smoothed curves, the intersection at two curve both ends
Transition is carried out using fillet, the upstream face 31 arrives the first gradually increase of direction of the distance of back side 32 from water inlet end to water side
After be gradually reduced and peak is located at the middle part of upstream face 31.
As shown in figure 5, in order to further reduce impeller drag, initial-flow is reduced, the water meter turbine also includes fixed
Wolfram steel axle 4 in the upper end of impeller axle 1, it is arranged in impeller body 2 and the body of impeller axle 1 and the cavity 5 with shed, is arranged at
Gasket seal 6 and corundum axle sleeve 7 in cavity 5, the gasket seal 6 and corundum axle sleeve 7, which are fixedly arranged in the opening of cavity 5, to be caused
Cavity 5 forms closed cavity.
It is consistent during in order to ensure the center of gravity of impeller with design, improve the stability of wheel rotation, the impeller axle 1, impeller
Body 2 and helical blade 3 use an injection molded, and the wolfram steel axle 4 is in advance in impeller axle 1, impeller body 2 and helical blade
Positioned in 3 injection mold.
Embodiment 2：
As shown in figure 4, the difference of embodiment 2 and embodiment 1 is：The upstream face 31 to back side 32 distance by entering
Water end (W.E.) is gradually reduced behind the direction of water side first gradual increase and the close water side side of peak.So design meets fluid
The principle of mechanics, wheel rotation resistance and initial-flow can be reduced.
For blade wheel structure of the present utility model with water meter, the initial-flow of water meter is about 20L/h, is the 1/ of existing water meter
3, regime flow is only 60L/h, and metering is more accurate, and existing Large diameter helical vane type water meter regime flow is 127L/h.
Simply the technical solution of the utility model is explained in detail for above-mentioned embodiment, and the utility model is not
Above-described embodiment is only limited only to, every any improvement or replacement according to the utility model principle all should be new in this practicality
Within the protection domain of type.
Claims (6)
- A kind of 1. Large diameter helical vane type water meter impeller, it is characterised in that：Including impeller axle (1), it is fixedly arranged on impeller axle (1) lower end Impeller body (2) and more than three helical blades (3) for being located on impeller body (2) surrounding, the helical blade (3) bag Upstream face (31) and back side (32) are included, the upstream face (31) and back side (32) are smooth curved surface and upstream face (31) surface area is more than the surface area of back side (32).
- 2. Large diameter helical vane type water meter impeller according to claim 1, it is characterised in that：The upstream face (31) and the back of the body The water surface (32) carries out transition in the intersection of water inlet end and water side using fillet.
- 3. Large diameter helical vane type water meter impeller according to claim 1, it is characterised in that：The helical blade (3) Section is made up of two smoothed curves, and the intersection at two curve both ends carries out transition using fillet, and the upstream face (31) is arrived Direction of the distance of back side (32) from water inlet end to water side is gradually reduced after first gradually increasing and peak is located at upstream face (31) middle part.
- 4. Large diameter helical vane type water meter impeller according to claim 1, it is characterised in that：The helical blade (3) Section is made up of two smoothed curves, and the intersection at two curve both ends carries out transition using fillet, and the upstream face (31) is arrived The distance of back side (32) is gradually reduced from water inlet end behind the direction of water side first gradual increase and the close water side of peak Side.
- 5. Large diameter helical vane type water meter impeller according to claim 1, it is characterised in that：The water meter turbine also includes It is fixedly arranged on the wolfram steel axle (4) of impeller axle (1) upper end, is arranged at impeller body (2) and impeller axle (1) is in vivo and with shed Cavity (5), the gasket seal (6) being arranged in cavity (5) and corundum axle sleeve (7), the gasket seal (6) and corundum axle sleeve (7) being fixedly arranged in the opening of cavity (5) causes cavity (5) to form closed cavity.
- 6. Large diameter helical vane type water meter impeller according to claim 5, it is characterised in that：The impeller axle (1), impeller Body (2) and helical blade (3) use an injection molded, and the wolfram steel axle (4) is in advance in impeller axle (1), impeller body (2) Positioned with the injection mold of helical blade (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720811958.8U CN207123310U (en) | 2017-07-06 | 2017-07-06 | Large diameter helical vane type water meter impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720811958.8U CN207123310U (en) | 2017-07-06 | 2017-07-06 | Large diameter helical vane type water meter impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207123310U true CN207123310U (en) | 2018-03-20 |
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ID=61612269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720811958.8U Active CN207123310U (en) | 2017-07-06 | 2017-07-06 | Large diameter helical vane type water meter impeller |
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| Country | Link |
|---|---|
| CN (1) | CN207123310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255495A (en) * | 2017-07-06 | 2017-10-17 | 福州金泽科技有限公司 | Large diameter helical vane type water meter impeller |
-
2017
- 2017-07-06 CN CN201720811958.8U patent/CN207123310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255495A (en) * | 2017-07-06 | 2017-10-17 | 福州金泽科技有限公司 | Large diameter helical vane type water meter impeller |
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