CN209910753U

CN209910753U - Coaxial water meter

Info

Publication number: CN209910753U
Application number: CN201920666815.1U
Authority: CN
Inventors: 查小娜; 张裕松; 钱军; 祝为民; 王俊杰
Original assignee: Ningbo Water Meter Co Ltd
Current assignee: Ningbo Water Meter Group Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-07
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a coaxial water meter, it is including the collecting tube that is equipped with water inlet passageway and delivery port passageway, metering mechanism, the watchcase, prevent the magnetic ring, and the counter, wherein the watchcase is connected in the collecting tube, metering mechanism installs in the watchcase, be provided with rotatable impeller in the metering mechanism, thereby the sun gear and the impeller magnetic coupling of counter count, it is peripheral at the sun gear of impeller and counter to prevent the magnetic ring setting, and the up end of preventing the magnetic ring is higher than the magnetic coupling portion of counter sun gear, the lower terminal surface is less than the magnetic coupling portion of impeller. Water flow flows into the metering mechanism from a water inlet channel of the collecting pipe, the impeller is impacted by the water flow to rotate, and the central gear of the counter is synchronously driven to rotate and count through magnetic coupling. The utility model provides a coaxial water gauge has reduced loss of pressure, and has better antimagnetic performance.

Description

Coaxial water meter

Technical Field

The utility model relates to a water gauge field, more specifically say that it relates to a coaxial water gauge.

Background

The coaxial water meter is a water meter which utilizes a collecting pipe to connect a closed pipeline, the inlet and outlet channels of the water meter and the collecting pipe are coaxial at the joint part between the water meter and the collecting pipe, and the inlet and the outlet of water flow are on the same interface. Because of the convenient installation and stable performance, the coaxial water meter has increasing demand in domestic and foreign markets.

However, the existing coaxial water meter has certain defects in structure, the volume of the inner cavity of the manifold of the existing coaxial water meter is small, so that the pressure loss is large, and the metering result is easy to interfere due to no antimagnetic measure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial water gauge has solved above-mentioned problem to a certain extent, has reduced loss of pressure, and has better antimagnetic performance.

In order to achieve the above object, the utility model provides a coaxial water meter, it includes:

the metering device comprises a collecting pipe, a metering mechanism, a meter shell, a magnetic-proof ring and a counter, wherein a water inlet channel and a water outlet channel are arranged in the collecting pipe, the meter shell is connected to the collecting pipe, the metering mechanism is installed in the meter shell, a rotatable impeller is arranged in the metering mechanism, a central gear of the counter is in magnetic coupling with the impeller so as to count, the magnetic-proof ring is arranged on the peripheries of the impeller and the central gear of the counter, the upper end face of the magnetic-proof ring is higher than a magnetic coupling part of the central gear of the counter, and the lower end face of the magnetic-proof ring is lower than the magnetic coupling part.

The water flow flows into the metering mechanism from the water inlet channel of the collecting pipe, the impeller is impacted by the water flow to rotate, the central gear of the counter is synchronously driven to rotate and count through magnetic coupling, and the magnetic coupling part of the impeller and the central gear of the counter is surrounded and protected by the magnetic ring, so that external magnetic interference can be effectively avoided, and the accuracy of a metering result is ensured.

According to the utility model discloses a preferred embodiment, coaxial water gauge further includes packing ring and junk ring, wherein the junk ring sets up in the watchcase and with the connection terminal surface of watchcase flushes, the packing ring sets up the watchcase with the connection face of collecting pipe just support in the junk ring is suitable for sealedly the watchcase with joint gap between the collecting pipe, the junk ring has increased the pressurized area of packing ring is favorable to guaranteeing the leakproofness of packing ring.

Preferably, the watchcase and the collecting pipe are connected through threads, and a threaded terminal of the watchcase is provided with a circular ring boss suitable for thread limiting, so that the axial compression deformation of the metering mechanism caused by the tightening transition of the watchcase and the collecting pipe is prevented.

According to the utility model discloses a preferred embodiment, metering mechanism further includes water strainer, impeller box and apron, wherein the impeller box sets up in the water strainer, the impeller rotatably sets up in the impeller box, the apron connect in the impeller box.

According to the utility model discloses a preferred embodiment, the lateral wall of impeller box is equipped with the water inlet, and the diapire is equipped with a plurality of lower end muscle that are radial evenly distributed, fretwork between the adjacent lower end muscle, coaxial water meter is still including lengthening ring sum O type circle, wherein an end card that lengthens the ring inlay in the outer wall of impeller box bottom portion, another terminal surface are equipped with the fixed slot, O type circle card inlay in the fixed slot, O type circle support in lengthen the ring with between the pipe wall of delivery port passageway.

The water flow flows in from the water inlet channel of the collecting pipe, is filtered by the water strainer, flows in along the water inlet of the impeller box and impacts the impeller, flows out from the hollow part of the lower bottom rib of the impeller box, passes through the lengthening ring and flows out from the water outlet channel of the collecting pipe, and the O-shaped ring is arranged to isolate the water inflow and the water outflow, so that the water flow direction in the meter shell is ensured.

Preferably, a plurality of positioning shafts are arranged on the side wall boss plane of the impeller box, positioning holes matched with the positioning shafts are formed in the mounting surface of the cover plate, and the cover plate and the impeller box can be conveniently connected in a positioning mode through the matching of the positioning holes and the positioning shafts.

Preferably, the outer plane of the cover plate is provided with a boss adapted to contact the inner wall of the casing, thereby preventing the impeller from being axially compressed.

Preferably, the side wall of the impeller box is provided with a notch, and the inner cavity wall of the water filter screen is provided with a regulating block matched with the notch, so that the impeller box and the water filter screen can be conveniently connected in a positioning manner.

Preferably, a first radial scribed line is arranged at the edge of the cover plate, a plurality of second radial scribed lines which are uniformly arranged are arranged at the edge of the water filter screen, the water inflow can be judged by observing the relative positions of the first radial scribed line and the second radial scribed line, and the metering accuracy of the water meter is improved.

According to the utility model discloses a preferred embodiment, coaxial water gauge further includes signal acquisition signaling portion, be provided with signaling pointer in the counter, signal acquisition signaling portion response is gathered signaling pointer's rotation signal sends to next level processing end, and the measurement signal of being convenient for carries out unified processing.

The above and other objects, features and advantages of the present invention will be further apparent from the following detailed description and the accompanying drawings.

Drawings

Figure 1 is a cross-sectional view of a coaxial water meter in accordance with a preferred embodiment of the present invention;

fig. 2 is an exploded view of a coaxial water meter in accordance with a preferred embodiment of the present invention;

fig. 3 is an exploded view of a metering mechanism according to a preferred embodiment of the present invention;

fig. 4 is a schematic structural view of a cover plate according to a preferred embodiment of the present invention;

fig. 5 is a schematic structural view of a water filter net according to a preferred embodiment of the present invention;

fig. 6 is a schematic structural view of an impeller cartridge according to a preferred embodiment of the present invention;

in the figure: a manifold 11; a water inlet passage 111; an outlet passage 112; a gasket 12; a gasket 13; an O-ring 14; an elongated ring 15; a metering mechanism 16; a water filtration screen 161; an adjustment block 1611; a second radial score line 1612; an impeller case 162; a water inlet 1621; lower bottom ribs 1622; a positioning shaft 1623; notch 1624; an impeller 163; a cover plate 164; a positioning hole 1641; a boss 1642; a first radial score line 1643; an upper bottom rib 1644; a watch case 17; an annular boss 171; a magnetism preventive ring 18; a counter 20; a snap ring 30; a ring cage assembly 40; a case lid assembly 50; a signal collecting and transmitting part 60.

Detailed Description

The following description will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the following described embodiments or technical features can be used to form a new embodiment without conflict.

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 6 of the drawings, a coaxial water meter according to a preferred embodiment of the present invention will be explained in the following description, which includes a manifold 11, a gasket 12, a collar 13, an O-ring 14, an extension ring 15, a metering mechanism 16, a case 17, a magnetic shield ring 18, and a counter 20. The manifold 11 is adapted to be connected to a water supply network and is provided with a water inlet channel 111 and a water outlet channel 112 therein. The meter housing 17 is connected to the manifold 11, and the metering mechanism 16 is mounted in the meter housing 17.

A rotatable impeller 163 is provided in the metering mechanism 16, the central gear of the counter 20 is magnetically coupled with the impeller 163 to perform counting, water flows into the metering mechanism 16 from the water inlet channel 111 of the collecting pipe 11, the impeller 163 is impacted by the water flow to rotate, and the central gear of the counter 20 is synchronously driven to perform rotation counting through the magnetic coupling.

Preferably, the impeller 163 is made of a material with a density lower than that of water, so as to ensure that the impeller can reach a dynamic balance state under the combined action of water flow and magnetic coupling, effectively reduce friction, and prolong the service life of the water meter. The conventional common impeller is usually fixed in a sectional mode, the lower end of the conventional common impeller is fixed by an impeller box tip, and the upper end of the conventional common impeller is fixed by an impeller shaft, so that uncertain factors influencing the coaxiality of the impeller are more. The impeller 163 in this embodiment is formed by injection molding using an impeller shaft, and the coaxiality tolerance is easy to control.

It should be noted that the magnetic-proof ring 18 is disposed on the periphery of the impeller 163 and the central gear of the counter 20, and the upper end surface of the magnetic-proof ring 18 is higher than the magnetic coupling portion of the central gear of the counter 20, and the lower end surface is lower than the magnetic coupling portion of the impeller 163. The magnetic-resisting ring 18 surrounds and protects the impeller 163 and the magnetic coupling portion of the central gear of the counter 20, so that external magnetic interference can be effectively avoided, and the accuracy of a metering result is ensured.

Preferably, in one embodiment, said case 17 and said manifold 11 are connected by means of screws. The threaded end of the case 17 is provided with a circular boss 171 adapted to be screwed into a stop to prevent the case 17 and the manifold 11 from causing axial compression deformation of the metering mechanism 16 due to over-tightening. In the actual installation process, the collecting pipe 11 can be installed in a water supply pipe network firstly, and then the watchcase 17 and other parts are installed, so that the installation mode is flexible.

Further, said gasket 13 is arranged inside said watch case 17 and flush with the connecting end face of said watch case 17, said gasket 12 is arranged at the connecting face of said watch case 17 and said manifold 11 and abuts against said gasket 13, said gasket 12 being adapted to seal the connecting gap between said watch case 17 and said manifold 11. The gasket 13 increases the pressure bearing area of the gasket 12, and contributes to ensuring the sealing performance of the gasket 12.

Further, the metering mechanism 16 further comprises a water strainer 161, an impeller case 162, and a cover plate 164, wherein the impeller case 162 is disposed in the water strainer 161, the impeller 163 is rotatably disposed in the impeller case 162, and the cover plate 164 is connected to the impeller case 162. The lateral wall of impeller box 162 is equipped with water inlet 1621, and the diapire is equipped with a plurality of muscle 1622 of going to the bottom that is radial evenly distributed, fretwork between the adjacent muscle 1622 of going to the bottom.

One end face of the lengthening ring 15 is clamped and embedded in the outer wall of the bottom of the impeller box 162, the other end face of the lengthening ring is provided with a fixing groove, and the O-shaped ring 14 is clamped and embedded in the fixing groove. The O-ring 14 is pressed between the elongated ring 15 and the wall of the outlet channel 112.

The water flows in from the water inlet channel 111 of the collecting pipe 11, is filtered by the water strainer 161, flows in along the water inlet 1621 of the impeller box 162 to impact the impeller 163, and flows out from the hollow part of the lower bottom rib 1622 of the impeller box 162, passes through the lengthening ring 15, and then flows out from the water outlet channel 112 of the collecting pipe 11. The O-ring 14 isolates the water inflow and the water outflow, and ensures the water flow direction in the meter shell 17.

With further reference to fig. 3 to 6, a plurality of positioning shafts 1623 are disposed on a side wall boss plane of the impeller case 162, and a positioning hole 1641 adapted to the positioning shafts 1623 is disposed on a mounting surface of the cover plate 164. The positioning connection between the cover plate 164 and the impeller case 162 is facilitated by the cooperation of the positioning hole 1641 and the positioning shaft 1623.

Preferably, the number of the positioning shafts 1623 is implemented as 4 in this embodiment, and is uniformly distributed on the sidewall of the impeller case 162.

The side wall of the impeller box 162 is provided with a notch 1624, and the inner cavity wall of the water filtering net 161 is provided with an adjusting block 1611 matched with the notch 1624, so that the impeller box 162 and the water filtering net 161 can be conveniently connected in a positioning manner.

The outer plane of the cover plate 164 is provided with a boss 1642, the boss 1642 being adapted to contact the inner wall of the watch case 17, thereby preventing the impeller 163 from being axially compressed. The inner plane of the cover plate 164 is further provided with an upper bottom rib 1644 corresponding to the lower bottom rib 1622.

Preferably, the edge of the cover plate 164 is provided with a first radial score 1643, and the edge of the water filter screen 161 is provided with a plurality of second radial score 1612 which are uniformly arranged. The water inflow can be judged by observing the relative positions of the first radial scribed line 1643 and the second radial scribed line 1612, and the metering accuracy of the water meter is improved.

Further, the coaxial water meter also includes a snap ring 30, a ring cover assembly 40, and a cover assembly 50. The ring cover assembly 40 is mounted on the watch case 17 through the snap ring 30, the watch cover assembly 50 is mounted on the ring cover assembly 40, and the counter 20 is mounted in the ring cover assembly 40.

The counting signal of the counter 20 can be transmitted to the outside through a wired or wireless manner, and in this embodiment, a wireless remote transmission manner is adopted. The coaxial water meter further comprises a signal acquisition and transmission part 60 arranged on the meter cover component 50, a transmission pointer is arranged in the counter 20, the signal acquisition and transmission part 60 senses and acquires a rotating signal of the transmission pointer and transmits the signal to a next-stage processing end, and the metering signal is conveniently processed in a unified manner. It is easily understood that the manner of signal transmission can be selected according to actual requirements.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A coaxial water meter, comprising:

2. A coaxial water meter according to claim 1, further comprising a gasket and a collar, wherein said collar is disposed within said case flush with said connection end of said case, said gasket being disposed at said connection of said case and said manifold and abutting said collar and adapted to seal a connection gap between said case and said manifold.

3. A coaxial water meter according to claim 1 or claim 2, wherein said housing and said manifold are threadably connected, and wherein a threaded end of said housing is provided with an annular boss.

4. A coaxial water meter according to claim 1 or 2, wherein the metering mechanism further comprises a water screen, an impeller housing, and a cover plate, wherein the impeller housing is disposed within the water screen, the impeller is rotatably disposed within the impeller housing, and the cover plate is connected to the impeller housing.

5. A coaxial water meter as defined in claim 4, wherein said impeller housing has a water inlet in a side wall thereof, a plurality of radially and uniformly distributed lower ribs in a bottom wall thereof, and a hollow portion between adjacent lower ribs, said coaxial water meter further comprising an extension ring and an O-ring, wherein one end surface of said extension ring is engaged with an outer wall of said impeller housing bottom, and the other end surface thereof is provided with a fixing groove, said O-ring is engaged with said fixing groove, and said O-ring is abutted between said extension ring and a wall of said outlet passage.

6. A coaxial water meter as set forth in claim 4, wherein said impeller housing has a plurality of positioning shafts on a flat surface of a boss on a side wall thereof, and said cover plate has positioning holes formed on a mounting surface thereof for fitting said positioning shafts.

7. A coaxial water meter according to claim 4, wherein said cover plate has a boss on an outer planar surface thereof, said boss adapted to contact an inner wall of said housing to prevent axial compression of said impeller.

8. A coaxial water meter as defined in claim 4, wherein said impeller housing has a notch in a side wall thereof, and said strainer has an inner chamber wall provided with an adjustment block adapted to said notch for facilitating a positioning connection between said impeller housing and said strainer.

9. A coaxial water meter according to claim 4, wherein said cover plate has a first radial score line on an edge thereof, and said filter screen has a plurality of second radial score lines on an edge thereof in a uniform arrangement.

10. The coaxial water meter according to claim 1 or 2, further comprising a signal collecting and transmitting portion, wherein a transmitting pointer is disposed in the counter, and the signal collecting and transmitting portion senses and collects a rotation signal of the transmitting pointer and transmits the rotation signal to a next-stage processing terminal.