CN201653456U

CN201653456U - Spiral type water meter

Info

Publication number: CN201653456U
Application number: CN2010201738369U
Authority: CN
Inventors: 林志良; 钱光; 汪雄
Original assignee: NINGBO DONGHAI INSTRUMENT WATERWAYS CO Ltd
Current assignee: NINGBO DONGHAI INSTRUMENT WATERWAYS CO Ltd
Priority date: 2010-04-26
Filing date: 2010-04-26
Publication date: 2010-11-24
Anticipated expiration: 2020-04-26

Abstract

The utility model discloses a spiral type water meter, comprising a shell provided with a horizontal water passage, a counting mechanism arranged on the top of the shell, and a spiral type engine arranged in the shell. The utility model is characterized in that the spiral type engine comprises a support, and a deflector and an impeller both of which are positioned in the support and arranged sequentially along the water flowing direction; the impeller can be rotated in the air between the support and the defector under the water flow balancing action. The water meter with the structure reduces the friction force stressed on the impeller in rotation, further improves the measurement precision and remains the traditional characteristics of the spiral type water meter; the water meter is convenient for assembly, use and maintenance, low in cost and suitable for enterprises to produce and process.

Description

Spiral type water meter

Technical field

The present invention relates to a kind of water ga(u)ge, particularly relate to a kind of spiral type water meter.

Background technology

Water metering device is a kind of meter of water number amount of metering user use, large-diameter water meter particularly, be mainly used in the metering of tap water supply industry and all kinds of water unit to the large-diameter pipe net system tap water integrated flow of flowing through, for for the monitoring water system running of, water unit, prevent that damage by water, rational allocation from using water resource to carry out aspect such as cost accounting and playing important effect.Develop so far that the heavy caliber water metering device has had many types, such as electromagnetic flowmeter based on electromagnetic principle, based on the ultrasonic flow meter of ultrasound wave principle, and heavy caliber spiral shell wing water meter.

The measurement passage of electromagnetic flowmeter is a smooth straight, can not block, be applicable to the liquid-solid two-phase fluid of measuring immobilized particles, as paper pulp, mud, sewage etc., and the pressure loss that does not produce flow detection and caused, the flow range that can survey is big and can be applicable to corrosive fluid, but it is the very low liquid of energy measurement conductivity not, such as petroleum product, gas, steam with contain liquid than air pocket, and can not be used for the occasion of high-temperature, manufacturing price is also very high.

Ultrasonic flow meter can be done non-contact measurement, not having flows obstructs measurement, the no pressure loss, can measure non-conductive liquid, but ultrasonic flow meter also has some shortcomings, can only be used to measure clean liquid and gas such as the ultrasonic flow meter of using time propagation method, it is not high that the ultrasonic flow meter of application Doppler method can only be used to measure the liquid and the precision that contain certain suspended particle and bubble, and the ultrasonic flow meter cost is also higher.

Heavy caliber spiral type flowmeter utilizes the rotation of water impact impeller, the principle that impeller rotation is directly proportional with discharge in certain flow range is measured the volume of current, its advantage is easy to install, only need change movement during the maintenance of spiral shell wing detachable watermeter, negotiability is big, and the pressure loss is little, compact conformation, long service life, its shortcoming are that measuring accuracy is lower, and the disturbance rejection ability is also lower.As Chinese patent CN2442236Y disclosed " horizontal spiral shell wing detachable watermeter ", this water meter comprises housing, counter, spiral type movement, impeller in the movement is transferred to counter with the corresponding velocity of rotation of discharge by spiral gear, thereby the flow that shows water, movement also include the regulator of regulating current.But the rotation of such its impeller of spiral shell wing detachable watermeter is subjected to extraneous water pressure and influence of mounting accuracy easily, so the antijamming capability of this water meter is lower, and precision is also lower, can't compare with other large-diameter water meters on the metering grade.

Summary of the invention

Technical matters to be solved by this invention is to provide a kind of measuring accuracy higher spiral type water meter at above-mentioned prior art present situation, particularly relates to the higher horizontal spiral type water meter of a kind of measuring accuracy.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of spiral type water meter, comprise housing with horizontal water stream channel, be installed on the housing top counting mechanism, be installed on the spiral type movement in the housing, it is characterized in that: air deflector and impeller that described spiral type movement comprises support and is positioned at support, installs successively along water (flow) direction, and in the unsettled rotation between described support and described air deflector of described impeller under the current equilibrium activity.Utilize the flowmeter of this structure, can reduce impeller suffered friction force of when rotation, improved the measuring accuracy of this flowmeter more.

Preferably, described air deflector the place ahead central axis has an independent ball, form a circular hole on the air deflector of described ball rear side, described air deflector begins to be formed with a cavity that increases gradually towards impeller from circular hole, and the central axis of described ball has one and is connected to impeller, the place ahead of described impeller is a round end, and the rear of described impeller is connected to the installation shaft on the described carriage center axle.

For make air deflector more reposefully water conservancy diversion enter the current of housing, described air deflector also has an exterior annular face, have on the described air deflector at air deflector and between central shaft and exterior annular face, be dispersion shape and long rectification muscle of equally distributed multi-disc and the short rectification muscle of multi-disc, the plane and the current plane parallel of described long rectification muscle and short rectification muscle, the number of described long rectification muscle and short rectification muscle is identical and corresponding one by one, have angle between the long rectification muscle of each correspondence and the short rectification muscle, the part in the described long rectification muscle connects the ball in air deflector the place ahead.

Preferably, the angle between long rectification muscle and the short rectification muscle is 8 degree, and described long rectification muscle respectively is 6 with short rectification muscle.

In order to make impeller can have stronger intensity, the outside of described impeller has blade, has a reinforcement around the round end of this impeller, and described reinforcement is divided into described blade the shape that is shorter than the outside near the round end side.

And described impeller rear portion has gear train the rotating speed of impeller is passed to counting mechanism on the housing.

Preferably, described gear train is worm screw that is connected with described impeller and the spiral gear that matches with this worm screw, and another worm screw of matching with this spiral gear, and described another worm screw is connected to counting mechanism.

And for sealed support and housing better, make current, have seal groove on described support and the side that housing is connected and pack into for sealing strip only from the internal stent process.

Compared with prior art, the invention has the advantages that the stoichiometric level and the measuring accuracy that have not only improved water meter, and kept the characteristics of traditional removable spiral shell wing water meter, not only install, use, easy to maintenance, cost is also lower, is more conducive to that enterprise produces and processing.And improved the structure of air deflector, made air deflector water conservancy diversion current more reposefully.

Description of drawings

Fig. 1 is the perspective view of the spiral type water meter of the embodiment of the invention.

Fig. 2 is the cut-open view of the spiral type water meter of the embodiment of the invention.

Fig. 3 is the three-dimensional cutaway view of the spiral type water meter of the embodiment of the invention.

Fig. 4 is the sectional view on the water (flow) direction of spiral type water meter movement of the embodiment of the invention.

Fig. 5 be the embodiment of the invention the spiral type water meter movement with the perpendicular direction of Fig. 4 on sectional view.

Fig. 6 is the cut-open view of the housing of the embodiment of the invention.

Fig. 7 is the schematic perspective view of the support of the embodiment of the invention.

Fig. 8 is the schematic perspective view of the air deflector of the embodiment of the invention.

Fig. 9 is the schematic perspective view of the impeller of the embodiment of the invention.

Concrete label is as follows among the figure:

The 1-housing, 2-counting mechanism, 3-spiral type movement, 4-support, 5-impeller, the 6-air deflector, 7-gear train, 11-water inlet, 12-water delivering orifice, 13-through hole, the 41-axle, 42-rectiblock, 43-seal groove, 51-round end, the 52-blade, 53-reinforcement, 54-mounting hole, 55-worm screw, the 61-ball, 62-circular hole, the short rectification muscle of 63-, the long rectification muscle of 64-, the 65-installation shaft, 66-ring surface, 71-spiral gear, 72-worm screw

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Spiral type water meter of the present invention, as Figure 1-3, mainly comprise housing 1, counting mechanism 2, and spiral type movement 3, this housing 1 is a cylindrical shape, have the horizontal channel in it, water inlet 11 and water delivering orifice 12 lay respectively at the left and right sides of this horizontal channel, and the concrete structure of housing 1 can be referring to Fig. 6, Fig. 2 and Fig. 3, its upper end has through hole 13 counting mechanism 2 can be installed, the middle spiral type movement 3 that also is equipped with in the housing 1.In below describing, being the place ahead with the direction of water inlet 11, is the rear with the direction of water delivering orifice 12, and promptly the flow direction with current comes regulation to describe the front and back order of each parts.

Described movement 3 comprises support 4, impeller 5 air deflectors 6 and the gear train 7 that links to each other with impeller 5, described gear train 7 connects impellers 6 and counting mechanisms 2, the rotating speed of impeller 5 is driven to counting mechanism 2 carry out the calculating of flow and change demonstration by counting mechanism 2.After support 4 is fit into the corresponding position of housing 1, be fit into air deflector 6 and impeller 5 successively from water inlet 11 directions to water delivering orifice 12 directions, the central shaft of described support 4, impeller 5 and air deflector 6 is consistent with the central shaft of water stream channel in the housing 1.

The structure of support 4 as shown in Figure 7, its integral body roughly is a cylindrical shape, the side has through hole, the centre has can ccontaining air deflector 6 and the hollow space of impeller 5, its rear portion is provided with some rectiblocks 42 near the position of water delivering orifice 12, and this rectiblock 42 is dispersion shape and evenly distributes between the central shaft of support 4 and outside surface, support 4 also has consistent with the central shaft of support 4 axle 41, this 41 impeller 5 that is used to connect support 4 the place aheads.The seal groove 43 that also has symmetry on the both sides of support 4 and the face that housing 1 is connected is used to embed sealing strip, make seal better between support 4 and the housing 1 make water can be fully from the movement of support 4 inside by, fully act on the impeller 5 in the movement, increase the measuring accuracy of this flowmeter.

The spatial structure of impeller 5 can be as shown in Figure 9, the centre is the round end 51 of half spherical shape, the side of round end 51 has around the blade 52 that this round end evenly distributes and rotation is extended laterally, round end 51 also has a circle reinforcement 53 on every side around it, this reinforcement 53 is divided into outside length, inboard near the short shape in the position of round end 51 with blade 52, not only strengthened the intensity of blade 52, prevent that blade 52 from producing damage when current are too urgent, simultaneously blade 52 is divided into the long inboard weak point in the outside and is in order to have better moment and make the rotation of current impeller 5.Round end 51 centers of impeller 5 also have a mounting hole 54 consistent with impeller 5 central shafts, and the rear of impeller 5 also has with the hole (not shown among Fig. 9) of impeller 5 central shaft position consistency inserts for the axle on the housing 4 41.Impeller 5 adopts the engineering plastics of high-strength low-densities, and the design of blade 52 and reinforcement 53 also makes the intensity of impeller 5 increase greatly, increases the serviceable life of flowmeter.

Air deflector 6 also is equipped with in the place ahead of impeller 5, this air deflector 6 as shown in Figure 8, air deflector 6 is roughly a circle shape part, its outside has two inside and outside

annular faces

68,66, the center, front side of air deflector 5 has an independent ball 61, and the rear of ball 61 is formed with a circular hole 62, begins to form the cavity that increases gradually from circular hole 62, shown in Fig. 2 cut-open view.This cavity that enlarges gradually is used for the round end 51 of ccontaining impeller 5 front sides, and this air deflector 6 is extended with in the mounting hole 54 in an installation shaft 65 insertion impellers 5 the place aheads from the central axis of ball 61.Therefore, air deflector 6, impeller 5 and support 4 maintenance central shafts are as one man installed and are linked together.Installation shaft 65 on this impeller 5 and the air deflector 6 and the axle 41 on the support 4 all are not fixed installations simultaneously, all have the gap between the hole at the rear on the impeller 5 and the mounting hole in the place ahead 54 and axle 41 and the installation shaft 65 impeller 5 can be moved up and down before and after between installation shaft 65 and the axle 41, and this axle 41 and installation shaft 65 promptly are the rotary middle spindles of impeller 5.

Air deflector 6 also has parallel with water (flow) direction and be the equally distributed rectification muscle of dispersion shape between the central shaft of air deflector 6 and exterior annular face 66.This rectification muscle is divided into short rectification muscle 63 and long rectification muscle 64, and short rectification muscle 63 and long rectification muscle 64 all evenly distribute along the annulus of air deflector 6, short rectification muscle 63 is identical and corresponding one by one with the number of long rectification muscle 64, the plane parallel of every rectification muscle is in the current plane, and all to have angle between each short rectification muscle 63 and the long rectification muscle 64 be 8 to spend.As shown in Figure 8, described long rectification muscle 64 and short rectification muscle 63 are 6, the internal spherical surface 68 of long rectification muscle 64 from the extension of central axis of air deflector 6 to the exterior annular face, short rectification muscle 63 extends to outer annular surface 66 from the outside surface of air deflector 6 cavitys, and wherein equally distributed three balls 61 that are connected and fixed air deflector 6 the place aheads in the long rectification muscle 64.Rectification muscle 64 rectification better by such setting makes current be directed at impeller 5 reposefully.And the two ends up and down of air deflector 6 have outside expansion and the end face 67 vertical with water (flow) direction respectively, have threaded hole on this end face 67, are used for installing and fixing with support 4.

Current from the direction of water inlet 11 flow in the housing 1 earlier through behind the ball 61 through the circular hole 62 at ball 61 rears, these circular hole 62 rear sides increase gradually and form a cavity, therefore behind the water slug ball 61 through the circular hole 62 of air deflector 6, form nozzle at circular hole 62 places, the flow velocity of water at the cavity wall place of close air deflector 6 is zero, flow velocity is the highest in the middle of the cavity, the place ahead of impeller 5 is a round end 51, therefore just produce a kind of Raynaud's phenomenon, round end 51 just looks like to be held in the arms and hold by current, round end 51 can be stabilized on the axial line at center because of the water balance effect, just can along with the size of current the installation shaft 65 of air deflector 6 and support 4 spools 41 between move forward and backward.Because all have the space between the axle 41 on impeller 5 and installation shaft 65 that is connected air deflector 6 and the support 4, therefore impeller 5 is being stabilized under the effect of current on its central shaft, and the installation shaft 65 on mounting hole on it 54 and hole and the front side air deflector 6, can directly not contact between the axle 41 of rear side, all do not contact the friction force that produces on the rear and front end axial-radial of impeller 5, impeller 5 can not have frictionally rotation fully under the effect of current, size along with discharge, impeller 5 rotational speeies are fast more, little its rotational speed of flow is slow, therefore improved the measuring accuracy of this flowmeter, the serviceable life of the type water ga(u)ge that also extended.Air deflector 6 outsides have the different rectification muscle of two circles, and the current after the rectification are acted on the blade 51 of impeller 5 more reposefully.And the place ahead of air deflector 6 is adopted ball 61 and is not adopted other forms of parts to be because ball 6 can be gathered rectified action better to current, helps circular hole 62 places more and forms Reynolds effect.Certainly those skilled in the art also should recognize; as long as adopt the current principle for balance; impeller 5 can not had between air deflector 6 and support 4 frictionally along with the unsettled rotation of current; just can improve the measuring accuracy of this spiral shell wing water meter accordingly; might not adopt the air deflector and the support of said structure; the above embodiments are preferred version of the present invention, all should be in protection scope of the present invention as long as meet the embodiment of above-mentioned principle.

The gear train 7 of this water meter shown in Fig. 4,5, comprises the worm screw 55 that be equipped with at impeller 5 rear portions, and the spiral gear 71 that matches with this worm screw 55, another worm screw 72 of matching with this spiral gear 71.This worm screw 55 is matched with spiral gear 71 and gives worm screw 72 with the rotating speed transmission of impeller 5, this rotating speed is reached counting mechanism 2 converts numeral to and shows thereby worm screw 72 is connected to counting mechanism 2.The measuring accuracy of the general horizontal spiral shell wing of domestic heavy caliber detachable watermeter is generally at R50 (with reference to GB/T778-2007), and magnetic flowmeter uses the measures range of the spiral type detachable watermeter of structure of the present invention to reach more than the R400 generally all more than R250.Therefore adopt the spiral type water meter of this structure, not only simple in structure, rectification effect is good, and measuring accuracy is also quite high, reached the level of magnetic flowmeter, and the traditional characteristics that kept helical vane type water meter, not only install, use, easy to maintenance, cost is also lower, is more conducive to that enterprise produces and processing.

Although more than described the preferred embodiments of the present invention in detail, should be expressly understood that for a person skilled in the art, the present invention can have various changes and variation.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. spiral type water meter, comprise housing (1) with horizontal water stream channel, be installed on housing (1) top counting mechanism (2), be installed on the spiral type movement (3) in the housing (1), it is characterized in that: air deflector (6) and impeller (5) that described spiral type movement (3) comprises support (4) and is positioned at support (4), installs successively along water (flow) direction, and in the unsettled rotation between described support (4) and described air deflector (6) of described impeller (5) under the current equilibrium activity.

2. spiral type water meter as claimed in claim 1, it is characterized in that: described air deflector (6) the place ahead central axis has an independent ball (61), the air deflector (6) of described ball (61) rear side is gone up and is formed a circular hole (62), described air deflector (6) is formed with a cavity that increases gradually from circular hole (62) beginning towards impeller (5), and the central axis of described ball (61) has one (41) and is connected to impeller (5), the place ahead of described impeller (5) is a round end (51), and the rear of described impeller (5) is connected to the installation shaft (65) on described support (4) central shaft.

3. spiral type water meter as claimed in claim 2, it is characterized in that: described air deflector (6) also has an exterior annular face (66), have on the described air deflector (6) at air deflector (6) and between central shaft and exterior annular face (66), be dispersion shape and long rectification muscle (64) of equally distributed multi-disc and the short rectification muscle (63) of multi-disc, the plane and the current plane parallel of described long rectification muscle (64) and short rectification muscle (63), the number of described long rectification muscle (64) and short rectification muscle (63) is identical and corresponding one by one, have angle between the long rectification muscle (64) of each correspondence and the short rectification muscle (63), the part in the described long rectification muscle (64) connects the ball (61) in air deflector (6) the place ahead.

4. spiral type water meter as claimed in claim 3 is characterized in that: described angle is 8 degree, and described long rectification muscle (64) respectively is 6 with short rectification muscle (63).

5. spiral type water meter as claimed in claim 2, it is characterized in that: the outside of described impeller (5) has blade (52), round end (51) around this impeller (5) has a reinforcement (53), and described reinforcement (53) is divided into described blade (52) shape that is shorter than the outside near round end (51) side.

6. spiral type water meter as claimed in claim 1 is characterized in that: described impeller (5) rear portion has gear train (7) rotating speed of impeller (5) is passed to counting mechanism (2) on the housing (1).

7. spiral type water meter as claimed in claim 6, it is characterized in that: described gear train (7) is worm screw (55) that is connected with impeller (5) and the spiral gear (71) that matches with this worm screw (55), and another worm screw (72) of matching with this spiral gear (71), described another worm screw (72) is connected to counting mechanism (2).

8. as each described spiral type water meter of claim 1-7, it is characterized in that: have seal groove (43) on described support (4) and the side that housing (1) is connected and pack into for sealing strip.