CN205027391U - Single flow dry water meter - Google Patents

Single flow dry water meter Download PDF

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Publication number
CN205027391U
CN205027391U CN201520270737.5U CN201520270737U CN205027391U CN 205027391 U CN205027391 U CN 205027391U CN 201520270737 U CN201520270737 U CN 201520270737U CN 205027391 U CN205027391 U CN 205027391U
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CN
China
Prior art keywords
impeller
axle core
axle
single current
current dry
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Withdrawn - After Issue
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CN201520270737.5U
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Chinese (zh)
Inventor
童保华
张新忠
张杨康
常前程
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Wenling Younio Water Meter Co ltd
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Wenling Younio Water Meter Co ltd
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Priority to CN201520270737.5U priority Critical patent/CN205027391U/en
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Publication of CN205027391U publication Critical patent/CN205027391U/en
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Abstract

The utility model provides a single current dry-type water gauge belongs to water installation technical field. It has solved the lower problem of current single current dry-type water gauge measurement accuracy. This single current dry-type water gauge, including the impeller shell, apron and impeller, water inlet and delivery port have been seted up on the impeller shell lateral wall, the apron links firmly the upper end at the impeller shell, the impeller includes impeller shaft and the blade of circumference equipartition on the impeller shaft periphery wall, the axle core hole has been seted up to the impeller shaft axial, the inside of axle core hole one end has the cylindrical axle core portion, it dodges the cavity to form between this axle core portion periphery wall and the downthehole perisporium of axle core, it is top down to have linked firmly on the bottom surface in the impeller shell, the free end rotation of this top down connects the one end at axle core portion, the other end of axle core portion has linked firmly top, should go up top free end rotation and connect on the apron, the impeller shaft, axle core portion, top and top all. This single current dry-type water gauge can improve measurement accuracy.

Description

A kind of single current dry-type meter
Technical field
The utility model belongs to wetting system technical field, relates to a kind of single current dry-type meter.
Background technology
Water meter is the instrument measuring discharge.It adopts the direct mechanical motion process of removable wall volumetric measurement room or flow rate of water flow to the work of wing wheel in order to calculate the flowmeter flowing through the current volume of water supply pipe.Overwhelming majority of countries has also formulated the relevant standard of water meter, and overwhelming majority of countries has also formulated the relevant standard of water meter, as IS04064-1:2005, the National Standard of the People's Republic of China GB/T778-2007 etc. of ISO (International Standards Organization).Particularly GB/T778-2007: the significant change of flow point: choose conventional flow Q3 by the set of number of R5 series, then, measurement range Q3/Q1 is chosen by the set of number of R10 series, press Q4/Q3=1.25 again, Q2/Q1=1.6 determined current-carrying capacity Q4 and boundary flow Q2, did not have intrinsic corresponding relation.Measurement range Q3/Q1 is exactly the ratio (embodying one of index the most intuitively of water meter technical merit) of R.
As Chinese utility model patent application (application number: 200920233124.9) disclose a kind of rotor water gauge, it mainly comprises watchcase, metering mechanism and indicating mechanism, metering mechanism and indicating mechanism are arranged on watchcase inner chamber respectively, feature is: described metering mechanism is made up of the impeller box of impeller and band filtrator, impeller is arranged in the impeller box of band filtrator, and the impeller box of described band filtrator is pressed into one by impeller box and filtrator.Be connected in the impeller axle of this water meter axle sleeve, lower be toply rotatably connected in axle sleeve, but impeller all adopts injection molding at present, all there is the problem of expanding with heat and contract with cold in the plastic products of injection mo(u)lding, above-mentioned impeller axial wall is thicker, the error of expanding with heat and contract with cold is comparatively large, and be difficult to ensure right alignment, therefore measuring accuracy is lower.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of single current dry-type meter, and this single current dry-type meter can improve measuring accuracy.
The purpose of this utility model realizes by following technical proposal: a kind of single current dry-type meter, comprise impeller housing, cover plate and impeller, described impeller housing sidewall offers water inlet and water delivering orifice, described cover plate is connected in the upper end of impeller housing, it is characterized in that, described impeller comprises impeller axle and the circumferential blade be distributed on impeller axle periphery wall, described leaf axle axial offers axle core bore, the inside of described axle core bore one end has columnar shaft core, formed between this axle core periphery wall and axle core bore internal perisporium and dodge cavity, described impeller housing inner bottom surface is fixed with lower top, this lower top free end is rotatably connected on one end of axle core, the other end of described axle core is fixed with top, free end top on this is rotationally connected on the cover board, described impeller axle, axle core, lower top and upper top equal concentric setting.
Impeller housing is connected on water pipe by water inlet and water delivering orifice, current enter impeller housing by water inlet and impact the blade of impeller, make vane rotary, vane rotary drives the movement running be connected in impeller housing by magnet steel, realize the counting to discharge, blade, impeller axle and axle core adopt PP integrally moulded, and the upper top axle core upper end that is pressed into after impeller injection formed, simultaneously for dodging the existence of cavity, reduce the thickness of impeller axle entity, namely the expansion error after the injection mo(u)lding of impeller axle is reduced, also for the trace expansion of axle core provides uniform expansion clearance, namely improve axle core and impeller axle, lower top, upper top between right alignment, the raising of right alignment can make vane rotary sensitiveer, improve measuring accuracy, impeller is respectively by upper top and be toply rotatably connected in impeller housing down, blade can be relative with water inlet, and impeller axle well keeps vertically afterwards at water pump composite, impeller housing toply to be supported impeller by lower, cover plate toply to be positioned impeller by upper, upper contact area that is top and lower top end is less, impeller material is lighter simultaneously, reduce pivoting friction, improve the sensitivity of rotation, namely also measuring accuracy is further increased.
In above-mentioned single current dry-type meter, the end opens of described axle core has lower connecting hole, and be fixed with the lower wear-resistant block of column in described lower connecting hole, the end opens of this lower wear-resistant block has pilot hole, and above-mentioned lower top free end is rotatably connected in pilot hole.Lower wear-resistant block adopts agate to make, the principal ingredient of agate is silicon dioxide, its surperficial flat-satin, there is vitreous luster, lower wear-resistant block press-in is descended connecting hole interior and is connected mutually with axle core, friction force under can reducing after lower top insertion pilot hole between top and lower wear-resistant block, improves measuring accuracy.
In above-mentioned single current dry-type meter, described cover plate offers connecting hole, is fixed with locating sleeve in described upper connecting hole, in described locating sleeve, is fixed with wear-resistant block, above-mentioned top free end is rotatably connected in locating sleeve, and upper top end is relative with upper wear-resistant block.Locating sleeve adopts carbon fibre material to make, carbon fiber quality is lighter than metallic aluminium, but intensity is higher than iron and steel, and there is characteristic that is corrosion-resistant, high-modulus, upper wear-resistant block then adopts agate to make, friction force between the two can be reduced when upper top end and upper wear-resistant block lean, improve measuring accuracy.
In above-mentioned single current dry-type meter, the distance between described lower top free end end to upper wear-resistant block is greater than the distance of upper top free end end to connecting hole bottom surface.Impeller can play up and down by upper top and lower top to be connected to after on impeller housing and cover plate, the moment of water impact is received at blade, impeller can float by trace under flow action, and in rotary course, there is the adjustment that fluctuates, this structure can avoid impeller to occur micro-clamping stagnation instantaneously being subject to water impact, reduce impeller and start acting force required when rotating, improve measuring accuracy.
In above-mentioned single current dry-type meter, on described cover plate downside, circumference is evenly equipped with some baffle muscle, and the length direction of described baffle muscle is all arranged along impeller radial direction.Have water delivering orifice to flow out along impeller housing inwall circumferential flow after current enter impeller housing by water inlet, baffle muscle can make current flow along predetermined direction, avoids impacting impeller housing inwall and dispersing water flow mobilization force, improves measuring accuracy.
In above-mentioned single current dry-type meter, described baffle muscle has the six roots of sensation, and wherein the height of two baffle muscle is greater than the height of other four baffle muscle, and highly larger two baffle muscle length directions are consistent.Current flow under the constraint of highly less baffle muscle water conservancy diversion in predetermined runner, because blade is positioned at the below of baffle muscle, highly larger baffle muscle then can make water produce the flow direction under being tilted to, namely blade is close to, less current also can be impacted on blade, improve measuring accuracy.
In above-mentioned single current dry-type meter, on described axle core bore internal perisporium, circumference has annular connecting portion, and above-mentioned axle core is positioned on connecting portion.Connecting portion is used for coupling shaft core, also improves the physical strength of impeller axle self simultaneously.
In above-mentioned single current dry-type meter, described lower top lower end has knurled portions, and described impeller housing inner bottom surface offers fixed orifice, and above-mentioned knurled portions is fixedly plugged in fixed orifice.The circumference that knurled portions is used between lower top and impeller housing is fixed, and improves connective stability.
Compared with prior art, this single current dry-type meter has the following advantages:
1, owing to dodging the existence of cavity, reduce the thickness of impeller axle entity, namely the expansion error after the injection mo(u)lding of impeller axle is reduced, also for the trace expansion of axle core provides uniform expansion clearance, namely improve axle core and impeller axle, lower top, upper top between right alignment, the raising of right alignment can make vane rotary sensitiveer, improves measuring accuracy.
2, because impeller housing toply to be supported impeller by lower, cover plate toply to be positioned impeller by upper, and upper contact area that is top and lower top end is less, impeller material is lighter simultaneously, reduce pivoting friction, improve the sensitivity of rotation, further increase measuring accuracy.
3, because the distance between lower top free end end to upper wear-resistant block is greater than the distance of upper top free end end to connecting hole bottom surface, namely impeller can play up and down, the moment of water impact is received at blade, impeller can float by trace under flow action, and in rotary course, there is the adjustment that fluctuates, this structure can avoid impeller to occur micro-clamping stagnation instantaneously being subject to water impact, reduces impeller and starts acting force required when rotating, improve measuring accuracy.
4, because the height of wherein two baffle muscle is greater than the height of other four baffle muscle, highly larger baffle muscle then can make water produce and be tilted to lower flow direction, is namely close to blade, less current also can be impacted on blade, raising measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the structure cut-open view of this single current dry-type meter.
Fig. 2 is the schematic enlarged-scale view at A place in Fig. 1.
Fig. 3 is the schematic enlarged-scale view at B place in Fig. 1.
Fig. 4 is the perspective view of cover plate.
In figure, 1, impeller housing; 11, water inlet; 12, water delivering orifice; 13, fixed orifice; 2, cover plate; 21, upper connecting hole; 22, baffle muscle; 3, impeller; 31, impeller axle; 311, axle core bore; 312, axle core; 313, cavity is dodged; 314, lower connecting hole; 315, connecting portion; 32, blade; 4, upper top; 5, lower top; 51, knurled portions; 6, lower wear-resistant block; 61, pilot hole; 7, locating sleeve; 8, upper wear-resistant block.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, a kind of single current dry-type meter, comprise movement, impeller housing 1, cover plate 2 and impeller 3, cover plate 2 is connected in the upper end of impeller housing 1, movement is fixed in impeller housing 1, and be positioned at the top of cover plate 2, impeller housing 1 sidewall offers water inlet 11 and water delivering orifice 12, and be connected on water pipe by water inlet 11 and water delivering orifice 12, impeller 3 comprises impeller axle 31 and the circumferential blade 32 be distributed on impeller axle 31 periphery wall, blade 32 is rectangular, impeller axle 31 axially offers axle core bore 311, the inside of axle core bore 311 one end has columnar shaft core 312, formed between this axle core 312 periphery wall and axle core bore 311 internal perisporium and dodge cavity 313, impeller housing 1 inner bottom surface is fixed with lower top 5, this lower free end of top 5 is rotatably connected on one end of axle core 312, the other end of axle core 312 is fixed with top 4, on this, the free end of top 4 is rotatably connected on cover plate 2, impeller axle 31, axle core 312, lower top 5 and upper top 4 equal concentrics are arranged.Current enter impeller housing 1 by water inlet 11 and impact the blade 32 of impeller 3, impeller 3 is rotated, impeller 3 is rotated through magnet steel and drives the movement running be connected in impeller housing 1, realize the counting to discharge, blade 32, impeller axle 31 and axle core 312 adopt PP integrally moulded, and upper top 4 are pressed into axle core 312 upper end after impeller 3 injection formed, simultaneously for dodging the existence of cavity 313, reduce the thickness of impeller axle 31 entity, namely the expansion error after the injection mo(u)lding of impeller axle 31 is reduced, also for the trace expansion of axle core 312 provides uniform expansion clearance, namely improve axle core 312 and impeller axle 31, lower top 5, right alignment between upper top 4, it is sensitiveer that the raising of right alignment can make impeller 3 rotate, improve measuring accuracy, impeller 3 is rotatably connected in impeller housing 1 respectively by upper top 4 and lower top 5, blade 32 can be relative with water inlet 11, and impeller axle 31 well keeps vertically afterwards at water pump composite, impeller housing 1 is supported by lower top 5 pairs of impellers 3, cover plate 2 is positioned by upper top 4 pairs of impellers 3, upper top 4 and the contact area of the lower end of top 5 less, impeller 3 material is lighter simultaneously, reduce pivoting friction, improve the sensitivity of rotation, namely also measuring accuracy is further increased.
Specifically, composition graphs 2, shown in Fig. 3, the end of axle core 312, namely lower end offers lower connecting hole 314, the lower wear-resistant block 6 of column is fixed with in lower connecting hole 314, the end opens of this lower wear-resistant block 6 has pilot hole 61, the inner bottom surface of pilot hole 61 is cambered surface, the free end of lower top 5 is rotatably connected in pilot hole 61, lower wear-resistant block 6 adopts agate to make, the principal ingredient of agate is silicon dioxide, its surperficial flat-satin, there is vitreous luster, lower wear-resistant block 6 is pressed into connecting hole 314 interior and is connected mutually with axle core 312, friction force under can reducing after inserting pilot hole 61 lower top 5 between top 5 and lower wear-resistant block 6, improve measuring accuracy.Cover plate 2 offers connecting hole 21, locating sleeve 7 is fixed with in upper connecting hole 21, wear-resistant block 8 is fixed with in locating sleeve 7, the free end of upper top 4 is rotatably connected in locating sleeve 7, and the upper end of top 4 is relative with upper wear-resistant block 8, locating sleeve 7 adopts carbon fibre material to make, carbon fiber quality is lighter than metallic aluminium, but intensity is higher than iron and steel, and there is characteristic that is corrosion-resistant, high-modulus, upper wear-resistant block 8 then adopts agate to make, and can reduce friction force between the two when upper top 4 ends and upper wear-resistant block 8 lean, and improves measuring accuracy.The upper end circumference of axle core bore 311 has annular recessed shoulder, for the magnet steel that is connected, thus produces with movement and is in transmission connection.Distance between lower top 5 free end ends to upper wear-resistant block 8 is greater than the distance of upper top 4 free end ends to connecting hole bottom surface, impeller 3 to be connected to after on impeller housing 1 and cover plate 2 by upper top 4 and lower top 5 can play up and down, the moment of water impact is received at blade 32, impeller 3 can float by trace under flow action, and in rotary course, there is the adjustment that fluctuates, this structure can avoid impeller 3 to occur micro-clamping stagnation instantaneously being subject to water impact, reduce impeller 3 and start acting force required when rotating, improve measuring accuracy.Lower top 5 lower ends have knurled portions 51, and impeller housing 1 inner bottom surface offers fixed orifice 13, knurled portions 51 is fixedly plugged in fixed orifice 13.Knurled portions 51 is fixed for the circumference between lower top 5 and impeller housing 1, improves connective stability.On axle core bore 311 internal perisporium, circumference has annular connecting portion 315, and axle core 312 is positioned on connecting portion 315, and connecting portion 315, for coupling shaft core 312, also improves the physical strength of impeller axle 31 self simultaneously.
Shown in composition graphs 4, on cover plate 2 downside, circumference is evenly equipped with some baffle muscle 22, the length direction of baffle muscle 22 is all arranged along impeller 3 radial direction, water delivering orifice 12 is had to flow out along impeller housing 1 inwall circumferential flow after current enter impeller housing 1 by water inlet 11, baffle muscle 22 can make current flow along predetermined direction, avoid impacting impeller housing 1 inwall and dispersing water flow mobilization force, improve measuring accuracy.The quantity of baffle muscle 22 can affect the water conservancy diversion effect to current, quantity is crossed excessive to resistance to water-flow at most, quantity crosses at least that water conservancy diversion effect is poor, therefore in the present embodiment, baffle muscle 22 has the six roots of sensation, wherein the height of two baffle muscle 22 is greater than the height of other four baffle muscle 22, and highly larger two baffle muscle 22 length directions are consistent, current flow under the constraint of highly less baffle muscle 22 water conservancy diversion in predetermined runner, because blade 32 is positioned at the below of baffle muscle 22, 22, highly larger baffle muscle can make water produce the flow direction under being tilted to, namely blade 32 is close to, less current also can be impacted on blade 32, improve measuring accuracy.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as impeller housing 1, water inlet 11, water delivering orifice 12 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims (8)

1. a single current dry-type meter, comprise impeller housing (1), cover plate (2) and impeller (3), described impeller housing (1) sidewall offers water inlet (11) and water delivering orifice (12), described cover plate (2) is connected in the upper end of impeller housing (1), it is characterized in that, described impeller (3) comprises impeller axle (31) and circumference and is distributed on blade (32) on impeller axle (31) periphery wall, described impeller axle (31) axially offers axle core bore (311), the inside of described axle core bore (311) one end has columnar shaft core (312), formed between this axle core (312) periphery wall and axle core bore (311) internal perisporium and dodge cavity (313), described impeller housing (1) inner bottom surface is fixed with lower top (5), the free end of these lower top (5) is rotatably connected on one end of axle core (312), the other end of described axle core (312) is fixed with top (4), the free end of top on this (4) is rotatably connected on cover plate (2), described impeller axle (31), axle core (312), lower top (5) and upper top (4) all concentric are arranged.
2. single current dry-type meter according to claim 1, it is characterized in that, the end opens of described axle core (312) has lower connecting hole (314), the lower wear-resistant block (6) of column is fixed with in described lower connecting hole (314), the end opens of this lower wear-resistant block (6) has pilot hole (61), and the free end of above-mentioned lower top (5) is rotatably connected in pilot hole (61).
3. single current dry-type meter according to claim 2, it is characterized in that, described cover plate (2) offers connecting hole (21), locating sleeve (7) is fixed with in described upper connecting hole (21), wear-resistant block (8) is fixed with in described locating sleeve (7), the free end of above-mentioned top (4) is rotatably connected in locating sleeve (7), and the end of upper top (4) is relative with upper wear-resistant block (8).
4. single current dry-type meter according to claim 3, it is characterized in that, the distance between described lower top (5) free end end to upper wear-resistant block (8) is greater than the distance of upper top (4) free end end to connecting hole bottom surface.
5. the single current dry-type meter according to Claims 2 or 3 or 4, it is characterized in that, on described cover plate (2) downside, circumference is evenly equipped with some baffle muscle (22), and the length direction of described baffle muscle (22) is all arranged along impeller (3) radial direction.
6. single current dry-type meter according to claim 5, it is characterized in that, described baffle muscle (22) has the six roots of sensation, wherein the height of two baffle muscle (22) is greater than the height of other four baffle muscle (22), and highly larger two baffle muscle (22) length directions are consistent.
7. the single current dry-type meter according to Claims 2 or 3 or 4, it is characterized in that, on described axle core bore (311) internal perisporium, circumference has annular connecting portion (315), and above-mentioned axle core (312) is positioned on connecting portion (315).
8. the single current dry-type meter according to Claims 2 or 3 or 4, it is characterized in that, described lower top (5) lower end has knurled portions (51), described impeller housing (1) inner bottom surface offers fixed orifice (13), above-mentioned knurled portions (51) is fixedly plugged in fixed orifice (13).
CN201520270737.5U 2015-04-29 2015-04-29 Single flow dry water meter Withdrawn - After Issue CN205027391U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520270737.5U CN205027391U (en) 2015-04-29 2015-04-29 Single flow dry water meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520270737.5U CN205027391U (en) 2015-04-29 2015-04-29 Single flow dry water meter

Publications (1)

Publication Number Publication Date
CN205027391U true CN205027391U (en) 2016-02-10

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Application Number Title Priority Date Filing Date
CN201520270737.5U Withdrawn - After Issue CN205027391U (en) 2015-04-29 2015-04-29 Single flow dry water meter

Country Status (1)

Country Link
CN (1) CN205027391U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105004382A (en) * 2015-04-29 2015-10-28 温岭甬岭水表有限公司 Single flow dry water meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105004382A (en) * 2015-04-29 2015-10-28 温岭甬岭水表有限公司 Single flow dry water meter
CN105004382B (en) * 2015-04-29 2018-02-06 温岭甬岭水表有限公司 Single flow dry water meter

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