CN211425546U - Base meter of positive displacement intelligent water meter - Google Patents

Abstract

The utility model relates to a positive displacement intelligence water gauge base table. The shell is provided with a movement accommodating cavity, the shell is provided with a water inlet pipe and a water outlet pipe, the movement is fixedly arranged in the movement accommodating cavity, and the movement comprises a piston box, an upper cover plate, a piston, a water stop plate, a Hall sensor and a control module; the piston is provided with a magnetic ring, the Hall sensor is used for collecting a magnetic field change signal generated by the piston rotating magnetic ring and outputting the signal to the outside, and the control module comprises an MCU module, is connected with the Hall sensor and is used for receiving an electric pulse signal so as to calculate a water flow volume value according to the signal. The utility model adopts the piston type movement to measure quantitatively in turn, the starting flow is extremely low, the precision is high, the error is small, the range ratio is wide, and the basic meter adopts the Hall sensor to collect and count to replace the gear mechanism of the counter with complex structure in the prior art, no additional transmission resistance exists, the precision is high, the abrasion is reduced, the service life is long, and the work is reliable; can meet the requirements of water jet leakage treatment and continuous improvement.

Description

Base meter of positive displacement intelligent water meter

Technical Field

The utility model relates to a water gauge field is a positive displacement intelligence water gauge base table very much.

Background

With the continuous improvement of domestic water quality, the development of the internet of things technology and the requirement of water meter leakage treatment, the existing water meter range ratio (common R80-R100) can not keep up with the requirement, and water meters are required to extend to a lower direction by water meters in various regions (the initial flow is less than 4 liters, more than R160 and more than C-level water meters). The existing speed type impeller water meter reaches the limit due to structural limitation, cannot meet the requirement, cannot be produced in batches, and urgently needs an intelligent water meter with wide range ratio and high precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the base meter adopts a piston type movement to meter quantitatively in sequence, has extremely low initial flow, high precision, small error and wide range ratio, adopts a Hall sensor to collect and count to replace a counter gear mechanism with a complex structure in the prior art, has no additional transmission resistance, high precision, reduced abrasion, long service life and reliable work; can meet the requirements of water jet leakage treatment and continuous improvement.

The utility model discloses a following technical scheme realizes: the utility model provides a positive displacement intelligence water gauge base table which characterized in that: the machine core is fixedly arranged in the machine core accommodating cavity, and the machine core accommodating cavity is isolated from the middle meter shell water outlet cavity at the bottom of the machine core accommodating cavity through matching contact of the peripheral wall of the machine core accommodating cavity and the peripheral wall of the machine core accommodating cavity; the movement comprises a piston box, an upper cover plate, a piston, a water-stop plate, a Hall sensor and a control module;

the piston box comprises a box body, a cylindrical metering groove which is vertically arranged in the box body and has an open top end, a winding rotating shaft which is coaxially and fixedly arranged at the bottom of the metering groove and extends upwards along the vertical direction, and annular windings which are coaxially arranged around the periphery of the winding rotating shaft, wherein the heights of the winding rotating shaft and the annular windings are both lower than the height of the side wall of the metering groove, and an annular track is formed between the inner peripheral wall of the annular winding and the outer peripheral wall of the winding rotating shaft; the upper cover plate comprises a plate body which is covered at the upper end of the box body and can seal the top opening of the metering groove of the piston box;

the water stop plate is vertically and fixedly arranged between the bottom wall of the metering groove and the bottom of the plate body and extends from the groove side wall of the metering groove to the outer peripheral wall of the annular winding along the radial direction; the water inlet hole which penetrates through the bottom wall of the metering groove and enables the metering groove to be communicated with a watchcase water inlet cavity outside the movement is formed in the bottom wall of the metering groove between the side wall of the metering groove and the outer circumferential wall of the annular winding of the box body, a water outlet hole which penetrates through the plate body and enables the metering groove to be communicated with a watchcase water outlet cavity outside the movement is formed in the position, between the side wall of the metering groove and the outer circumferential wall of the annular winding, of the plate body, and the water inlet hole and the water outlet hole are respectively located at the outer sides of two;

the piston comprises a circular piston sleeve ring which is vertically arranged in the metering tank and sleeved on the periphery of the annular winding, a piston partition plate which is transversely arranged in the piston sleeve ring and divides an inner cavity of the piston sleeve ring into a lower water inlet cavity and an upper water outlet cavity, and a piston rotating shaft which is coaxially connected to the middle part of the piston partition plate, vertically and downwardly extends into the annular track and can rotate around the winding rotating shaft along the annular track, a piston bayonet which extends upwards from the bottom to the top is vertically arranged on the side wall of the piston sleeve ring, an arc-shaped notch which is communicated with the piston bayonet and gradually increases and then gradually decreases from the position of the piston bayonet to the direction close to the center of the piston partition plate is arranged on the piston partition plate, the water-stop plate is clamped in the piston bayonet and the arc-shaped notch, and the piston sleeve ring can slide and rotate relative to the water-stop plate;

the side wall of the piston lantern ring is respectively provided with more than one side wall water inlet diversion hole and more than one side wall water outlet diversion hole at the position of the side wall of the piston lantern ring close to the edges of two sides of the piston bayonet, the side wall water inlet diversion hole and the side wall water outlet diversion hole can enable the inner cavity of the piston lantern ring to be communicated with an external metering tank, the side wall water inlet diversion hole and the water inlet hole are positioned at the same side of the water-stop plate, and the side wall water outlet diversion hole and the water outlet hole are positioned at the same side of the; more than one baffle plate flow guide hole for communicating the upper water outlet cavity with the lower water inlet cavity is formed in the piston baffle plate;

coaxial surrounding in the piston pivot has set firmly can follow the piston pivot around the synchronous pivoted magnetic ring of wiring pivot, the upper cover plate still is equipped with two and sets up in the plate body bottom and follow the hall sensor mounting groove of vertical direction downwardly extending to the batch meter along the circumferencial direction coaxial with the circular orbit at the interval in proper order, hall sensor's quantity is two and respectively fixed mounting in two hall sensor mounting grooves, and two hall sensors are used for gathering the piston pivot in step and wind the magnetic field change signal that the magnetic ring produced in-process of the rotatory process of wiring pivot and convert the electric pulse signal to export outward, control module includes the MCU module, the MCU module is connected with two hall sensors simultaneously for the electric pulse signal that receives two hall sensor outputs is in order to calculate water flow volume value according to this signal.

The working principle and the process are as follows: water flows into the metering tank from the water inlet pipe on the shell and passes through the filter screen and then enters the metering tank from the water inlet hole at the bottom of the piston box, and the piston performs periodic eccentric circular motion around the winding rotating shaft under the action of water flow pressure difference and the limiting action of the water stop sheet. Because a space with a certain volume can be formed between the metering groove and the piston, water flow can fill the space, and along with the rotation of the piston, fluid is pressed out of a water outlet hole by the piston and flows out of the shell through a water outlet pipe on the shell, the volume of the space is obtained in advance, and the number of times of rotation of the piston is counted, so that the volume of continuous fluid given by the space can be obtained. The piston assumes four states of motion during a complete cycle of motion, as shown in figures 17-20, the four states comprise a z1 state that the water inlet is not in the coverage range of the lower end opening of the lower water inlet cavity and the water outlet is not in the coverage range of the upper end opening of the upper water outlet cavity, a z3 state that the water inlet is completely in the coverage range of the lower end opening of the lower water inlet cavity and the water outlet is also completely in the coverage range of the upper end opening of the upper water outlet cavity, a z2 state that the water inlet is partially in the coverage range of the lower end opening of the lower water inlet cavity and the water outlet is partially in the coverage range of the upper end opening of the upper water outlet cavity in the process of switching from the z1 state to the z3 state, and a z4 state that the water inlet is partially in the coverage range of the lower end opening of the lower water inlet cavity and the water outlet is partially in the coverage range of the upper end opening of the upper water outlet cavity in the process; the piston is in a z1 state in an initial state, water flows into the piston from the side wall water inlet diversion hole on the piston at the moment, water flows out of the side wall water outlet diversion hole from the piston, the piston is started and enters a z2 state in the water flow movement process, the piston enters a z3 state under the action of water flow pressure difference, most of fluid enters the upper water outlet cavity from the lower water inlet cavity through the partition diversion hole and finally flows out from the water outlet hole in the z3 state, the z3 state can enter a z4 state due to the position distribution difference of the water inlet hole and the water outlet hole, and finally the piston enters a z1 state again under the action of the water flow pressure difference to complete one-time complete periodic movement. Under the condition of continuous water flow, the action cycle is successively completed, and the water volume flow is continuously measured. The piston rotating shaft is embedded with a magnetic ring, the two Hall sensors synchronously acquire magnetic field change signals generated by the magnetic ring in the process that the piston rotating shaft rotates around the winding rotating shaft and convert the magnetic field change signals into electric pulse signals to be output outwards, and the MCU module is connected with the two Hall sensors and simultaneously receives the electric pulse signals output by the two Hall sensors to calculate the water flow volume value according to the signals.

For better implementation of the scheme, the following optimization scheme is also provided:

for the convenience of fixing the installation of the movement and guaranteeing the tightness of the base meter, the base meter of the positive displacement intelligent water meter further comprises an inner tight ring which is in threaded connection with the inner wall of the accommodating cavity of the movement, the bottom of the inner tight ring is pressed on the top of the upper cover plate, a chamfer inclined plane is arranged on the peripheral edge of the upper end surface of the upper cover plate, a flat gasket is further arranged between the inner tight ring and the upper cover plate, and an O-shaped sealing ring which is in compression joint with the chamfer inclined plane is arranged between the flat gasket and the inner wall of the accommodating cavity of the upper cover plate and the.

In order to ensure the sealing performance of the base watch, the outer periphery of the upper end of the piston box is provided with an annular outer flange extending outwards along the radial direction of the winding rotating shaft, the inner peripheral wall of the movement containing cavity is further provided with an annular inner flange extending inwards along the radial direction close to the axis of the winding rotating shaft, the annular outer flange is lapped above the annular inner flange, and a square sealing ring is further arranged between the bottom of the annular outer flange and the top of the annular inner flange.

Preferably, the control module further comprises a sending module, and the sending module is connected with the MCU module and is configured to receive the volume value of the water flow calculated by the MCU module and send the volume value of the water flow to an external receiving platform through a communication network.

In order to filter the water flow entering the water inlet hole, the base meter of the positive displacement intelligent water meter further comprises a filter screen which is fixedly sleeved on the periphery of the lower end of the piston box and used for filtering the water flow entering the water inlet hole, and a plurality of filter holes are uniformly distributed on the filter screen.

Preferably, the periphery of the winding rotating shaft is coaxially and fixedly sleeved with a shaft sleeve, the center of the piston partition plate is provided with a rotating shaft mounting hole vertically penetrating through the upper plane and the lower plane of the piston partition plate around the axial line, the piston rotating shaft comprises a rotating shaft, the rotating shaft comprises a first rotating body, a second rotating body and a third rotating body which are sequentially and coaxially connected from top to bottom along the axial direction and the outer diameters of which are gradually increased, the third revolving body is exposed below the rotating shaft mounting hole and extends into the annular track, the first revolving body and the second revolving body are both exposed above the rotating shaft mounting hole, the magnetic ring is coaxially and fixedly sleeved on the periphery of the first revolving body, the piston rotating shaft further comprises a water-proof ring which is sleeved on the periphery of the second revolving body and is positioned between the magnetic ring and the piston partition plate, and a magnetic ring sleeve with a sealed upper end and an open lower end, the magnetic ring sleeve is sleeved on the periphery of the magnetic ring from top to bottom and extends downwards to be sleeved on the periphery of the waterproof ring.

In order to facilitate the installation of the water-stop sheet, a water-stop sheet installation groove for fixedly installing the water-stop sheet is arranged in the metering groove, and comprises a first groove vertically arranged on the side wall of the metering groove, a third groove arranged in parallel with the first groove and positioned on the outer peripheral wall of the annular winding, a second groove arranged at the bottom of the metering groove and connected between the lower end of the first groove and the lower end of the third groove, and a fourth groove arranged at the bottom of the plate body, arranged in parallel with the second groove and connected between the upper end of the first groove and the upper end of the third groove;

the water-stop sheet includes that the radial direction along the wire-wound joint pivot extends the water-stop sheet body that sets up and stretch into the spacing protruding piece that is used for playing the spacing effect of anticreep of the intraoral one end of arc breach at the water-stop sheet body, interval between the both sides edge of piston bayonet socket is greater than the water-stop sheet thickness and is less than the external diameter of spacing protruding piece is so that spacing protruding piece can not follow in the arc breach and get into the piston bayonet socket.

Preferably, the number of the side wall water inlet diversion holes and the side wall water outlet diversion holes is more than two, at least one side wall water inlet diversion hole and at least one side wall water outlet diversion hole are arranged at the upper part of the side wall of the piston collar and used for communicating the upper water outlet cavity with the metering groove positioned outside the piston collar, and at least one side wall water inlet diversion hole and at least one side wall water outlet diversion hole are arranged at the lower part of the side wall of the piston collar and used for communicating the lower water inlet cavity with the metering groove positioned outside the piston collar;

the number of the baffle plate flow guide holes is multiple, and each baffle plate flow guide hole surrounds the axis of the piston rotating shaft to form a first flow guide hole ring, a second flow guide hole ring and a third flow guide hole ring, the diameters of which are sequentially increased; each flow guide hole ring is provided with a plurality of baffle flow guide holes which are sequentially distributed at intervals along the circumferential direction of the flow guide hole ring.

Preferably, the upper cover plate further comprises an annular convex ring which is arranged at the bottom of the plate body, extends downwards into the metering groove and corresponds to the position of the annular winding, the hall sensor mounting grooves are distributed on the wall body of the annular convex ring, and the piston partition plate of the piston is clamped between the annular convex ring of the upper cover plate and the annular winding of the piston box;

the upper cover plate still is equipped with more than two and sets up at the plate body middle part and extend the cavity groove to the plate body periphery wall from inside to outside along the circumferencial direction interval around the wire-wound pivot, and each cavity groove communicates each other at the radial one end that is close to the central axis, the upper end opening of apopore switches on with wherein at least one cavity groove mutually.

In order to facilitate the positioning and sealing between the box body and the upper cover plate, the upper surface of the box body is further provided with more than one positioning pins which are distributed at intervals along the circumferential direction around the winding rotating shaft and extend upwards, the upper cover plate further comprises positioning grooves which are arranged at the bottom of the plate body and are matched and connected with the positioning pins and sealing ring mounting grooves which are arranged at the bottom of the plate body and are provided with downward openings along the circumferential direction around the winding rotating shaft, and the volume type intelligent water meter base table further comprises sealing rings which are arranged in the sealing ring mounting grooves and are pressed between the sealing ring mounting grooves and the upper surface of the box body.

Preferably, still be equipped with more than four location breach on the periphery wall of watchcase upper end outward flange, and still be equipped with on the watchcase upper end terminal surface and be used for making things convenient for the base table to carry out the installation screw hole of fixed mounting.

Compared with the prior art, the utility model has the advantages that:

1. the utility model provides a positive displacement intelligent water meter base table, which adopts a piston type movement to meter quantitatively in turn, the initial flow is extremely low, the precision is high, the error is small, the range ratio is wide, the base table adopts a Hall sensor to collect and count to replace the counter gear mechanism with a complex structure in the prior art, no extra transmission resistance exists, the precision is high, the abrasion is reduced, the service life is long, and the work is reliable; can meet the requirements of water jet leakage treatment and continuous improvement.

2. The utility model provides a positive displacement intelligence water gauge base table, the last lead circular inclined plane of upper cover plate is for carving the shape structure, and cooperation O type sealing washer, water pressure are big more, and sealed effect is more reliable.

3. The utility model provides a positive displacement intelligence water gauge base table has cup jointed the magnetic ring cover around connecing the pivot, plays the magnetic attenuation problem that the protection magnetic ring does not arouse by the bubble water.

4. The utility model provides a positive displacement intelligence water gauge base table, upper cover plate are hollow structure, are equipped with the cavity groove, and the upper cover plate is the water-stop sheet with watchcase wet-dry separation promptly, and the cavity groove of upper cover plate also is the drainage chamber runner, and the upper cover plate plays drainage and pressure-bearing effect simultaneously for the structure compactness more of whole base table.

Drawings

Fig. 1 is a top view of a base meter of the positive displacement intelligent water meter of the present invention;

FIG. 2 is a cross-sectional view of F-F in FIG. 1;

fig. 3 is an explosion schematic diagram of the base meter of the positive displacement intelligent water meter of the present invention;

fig. 4 is a top view of the base meter of the positive displacement intelligent water meter of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

fig. 7 is a schematic diagram of a three-dimensional structure of a piston box in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 8 is a schematic view of a connection structure between a piston box and a piston in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 9 is a top view of the piston box and the piston in the base meter of the positive displacement intelligent water meter of the present invention;

FIG. 10 is a cross-sectional view of C-C of FIG. 9;

FIG. 11 is a cross-sectional view taken along line D-D of FIG. 9;

fig. 12 is a top view of a piston and a water stop plate in the base meter of the positive displacement intelligent water meter of the present invention;

FIG. 13 is a cross-sectional view of E-E in FIG. 12;

fig. 14 is an exploded view of the piston shaft in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 15 is a schematic view showing a three-dimensional structure of an upper cover plate in a base meter of the positive displacement intelligent water meter of the present invention;

fig. 16 is a schematic diagram of a three-dimensional structure of an upper cover plate in a base meter of the positive displacement intelligent water meter of the present invention;

fig. 17 is a schematic view of the state of the piston z1 in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 18 is a schematic view of the state of the piston z2 in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 19 is a schematic view of the state of the piston z3 in the base meter of the positive displacement intelligent water meter of the present invention;

fig. 20 is a schematic view of the state of the piston z4 in the base meter of the positive displacement intelligent water meter according to the present invention.

Description of reference numerals: 1-piston box, 11-box body, 111-positioning pin, 12-metering groove, 13-annular track, 14-annular winding, 15-winding rotary shaft, 151-shaft sleeve, 16-annular outer flange, 2-upper cover plate, 21-plate body, 22-Hall sensor mounting groove, 23-convex ring, 24-hollow groove, 25-positioning groove, 26-sealing ring mounting groove, 27-chamfer inclined plane, 3-piston, 31-piston sleeve, 32-piston partition plate, 321-rotary shaft mounting hole, 33-piston rotary shaft, 331-magnetic ring, 332-rotary shaft, 3321-first rotary body, 3322-second rotary body, 3323-third rotary body, 333-water-proof ring, 334-magnetic ring sleeve, 34-piston bayonet, 35-baffle diversion hole, 351-first diversion hole ring, 352-second diversion hole ring, 353-third diversion hole ring, 36-arc notch, 37-side wall water inlet diversion hole, 38-side wall water outlet diversion hole, 4-water stop plate, 41-water stop plate body, 42-limit convex piece, 5-Hall sensor, 6-filter screen, 61-filter hole, 7-water stop plate installation groove, 71-first groove, 72-second groove, 73-third groove, 74-fourth groove, 8-seal ring, 9-meter shell, 91-machine core containing cavity, 911-meter shell inlet and outlet cavity, 912-meter shell outlet cavity, 913-annular inner flange 92-water inlet pipe, 93-water outlet pipe, 94-positioning notch, 95-installation threaded hole, 10-inner tight ring, 101-O-shaped sealing ring, 102-flat gasket, 103-square sealing ring, a-water inlet, a-projection position of a '-water inlet corresponding to the bottom of the upper cover plate, b-water outlet, projection position of b' -water outlet corresponding to the bottom of the piston box, c-lower water inlet cavity and d-upper water outlet cavity.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

as shown in fig. 1-20, a base meter of a positive displacement intelligent water meter is characterized in that: the water-saving water dispenser comprises a watch case 9 and a movement, wherein a movement accommodating cavity 91 is arranged inside the watch case 9, the movement accommodating cavity 91 comprises a watch case water inlet cavity 911 at the bottom and a watch case water outlet cavity 912 at the middle, a water inlet pipe 92 for communicating the outside with the watch case water inlet cavity 911 at the bottom of the movement accommodating cavity 91 is arranged at one side of the bottom of the watch case 9, a water outlet pipe 93 for communicating the outside with the watch case water outlet cavity 912 at the middle of the movement accommodating cavity 91 is arranged at one side of the middle of the watch case 9, and the movement is fixedly arranged in the movement accommodating cavity 91 and is in matched contact with the inner peripheral wall of the movement accommodating cavity 91 through the peripheral wall of the movement to enable the watch case water inlet cavity 911 at the bottom of the movement; the movement comprises a piston box 1, an upper cover plate 2, a piston 3, a water-stop sheet 4, a Hall sensor 5 and a control module;

the piston box 1 comprises a box body 11, a cylindrical metering groove 12 which is vertically arranged in the box body 11 and has an open top end, a winding rotating shaft 15 which is coaxially and fixedly arranged at the bottom of the metering groove 12 and extends upwards along the vertical direction, and an annular winding 14 which coaxially surrounds the winding rotating shaft 15, wherein the heights of the winding rotating shaft 15 and the annular winding 14 are both lower than the height of the side wall of the metering groove 12, and an annular track 13 is formed between the inner peripheral wall of the annular winding 14 and the outer peripheral wall of the winding rotating shaft 15; the upper cover plate 2 comprises a plate body 21 which is covered at the upper end of the box body 11 and can seal the top end opening of the metering groove 12 of the piston box 1;

the water-stop sheet 4 is vertically and fixedly mounted between the bottom wall of the metering slot 12 and the bottom of the plate body 21 and extends from the slot side wall of the metering slot 12 to the outer peripheral wall of the annular winding 14 in the radial direction; the box body 11 is provided with a water inlet hole a penetrating through the bottom wall of the metering groove 12 between the side wall of the metering groove 12 and the outer peripheral wall of the annular winding 14 to communicate the metering groove 12 with a watch case water inlet cavity 911 outside the movement, the plate body 21 is provided with a water outlet hole b penetrating through the plate body 21 to communicate the metering groove 12 with a watch case water outlet cavity 912 outside the movement at a position between the side wall of the metering groove 12 and the outer peripheral wall of the annular winding 14, and the water inlet hole a and the water outlet hole b are respectively positioned at the outer sides of two side plate surfaces of the water stop plate 4;

the piston 3 comprises a ring-shaped piston ring 31 vertically arranged in the metering groove 12 and sleeved on the periphery of the annular winding 14, a piston partition plate 32 transversely arranged in the piston ring 31 and dividing the inner cavity of the piston ring 31 into a lower water inlet cavity c and an upper water outlet cavity d, and a piston rotating shaft 33 coaxially connected to the middle part of the piston partition plate 32, vertically and downwardly extending into the annular track 13 and capable of rotating around the rotating shaft 15 along the annular track 13, wherein a piston bayonet 34 extending from the bottom to the top is vertically arranged on the side wall of the piston ring 31, an arc-shaped notch 36 communicated with the piston bayonet 34 and gradually increasing and then gradually decreasing in caliber from the position of the piston bayonet 34 to the direction close to the center of the piston partition plate 32 is arranged on the piston partition plate 32, and the water stop plate 4 is clamped in the piston bayonet 34 and the arc-shaped notch 36, the piston lantern ring 31 can slide and rotate relative to the water stop plate 4 through the matching of the piston bayonet 34 and the arc-shaped notch 36 with the water stop plate 4;

the side wall of the piston sleeve ring 31 is respectively provided with more than one side wall water inlet diversion hole 37 and more than one side wall water outlet diversion hole 38 at the positions close to the two side edges of the piston bayonet 34, the side wall water inlet diversion hole 37 and the side wall water outlet diversion hole 38 can enable the inner cavity of the piston sleeve ring 31 to be communicated with the external metering tank 12, the side wall water inlet diversion hole 37 and the water inlet hole a are positioned at the same side of the water stop plate 4, and the side wall water outlet diversion hole 38 and the water outlet hole a are positioned at the same side of the water stop plate 4; the piston partition plate 32 is provided with more than one partition plate flow guide hole 35 which enables the upper water outlet cavity d and the lower water inlet cavity c to be communicated;

a magnetic ring 331 which can rotate around the winding rotating shaft 15 synchronously along with the piston rotating shaft 33 is coaxially and fixedly arranged on the piston rotating shaft 33 in a surrounding way, the upper cover plate 2 is further provided with two Hall sensor mounting grooves 22 which are sequentially arranged at the bottom of the plate body 21 at intervals along the circumferential direction coaxial with the annular track 13 and extend downwards to the metering groove 12 along the vertical direction, the number of the hall sensors 5 is two and the hall sensors are respectively and fixedly installed in the two hall sensor installation grooves 22, the two hall sensors 5 are used for synchronously acquiring magnetic field change signals generated by the magnetic ring 331 in the process that the piston rotating shaft 33 rotates around the winding rotating shaft 15 and converting the magnetic field change signals into electric pulse signals to be output outwards, the control module comprises an MCU module which is simultaneously connected with two Hall sensors 5, for receiving the electric pulse signals output by the two hall sensors 5 to calculate the water flow volume value according to the signals.

As shown in fig. 1-3, in order to facilitate the installation of the movement to fix and ensure the sealing performance of the base meter, the base meter of the positive displacement intelligent water meter further comprises an inner clamping ring 10 screwed on the inner peripheral wall of the movement accommodating cavity 91, the bottom of the inner clamping ring 10 is pressed on the top of the upper cover plate 2, the outer peripheral edge of the upper end surface of the upper cover plate 2 is provided with a chamfer inclined surface 27, a flat gasket 102 is further arranged between the inner clamping ring 10 and the upper cover plate 2, and an O-shaped sealing ring 101 which is pressed and sleeved on the chamfer inclined surface 27 is arranged between the flat gasket 102 and the inner peripheral wall of the upper cover plate 2 and the movement accommodating cavity 91.

As shown in fig. 1 to 3, in order to ensure the sealing performance of the base watch, the outer periphery of the upper end of the piston case 1 is provided with an annular outer flange 16 extending outward in the radial direction of the winding rotating shaft 15, the inner peripheral wall of the movement accommodating chamber 91 is further provided with an annular inner flange 913 extending inward in the radial direction close to the axis of the winding rotating shaft 15, the annular outer flange 16 is overlapped over the annular inner flange 913, and a square seal ring 103 is further provided between the bottom of the annular outer flange 16 and the top of the annular inner flange 913.

Preferably, the control module further comprises a sending module, and the sending module is connected with the MCU module and is configured to receive the volume value of the water flow calculated by the MCU module and send the volume value of the water flow to an external receiving platform through a communication network.

As shown in fig. 2-6, in order to filter the water flow entering the water inlet, the base meter of the positive displacement intelligent water meter further includes a filter screen 6 fixedly sleeved on the periphery of the lower end of the piston box 1 for filtering the water flow entering the water inlet a, and a plurality of filter holes 61 are uniformly distributed on the filter screen 6.

As shown in fig. 3, 13 and 14, preferably, the shaft sleeve 151 is coaxially fixed and sleeved on the periphery of the winding rotation shaft 15, a rotation shaft installation hole 321 vertically penetrating through the upper and lower planes of the piston partition plate 32 is disposed around the axis of the center of the piston partition plate 32, the piston rotation shaft 33 includes a rotation shaft 332, the rotation shaft 332 includes a first rotation body 3321, a second rotation body 3322 and a third rotation body 3323, which are sequentially and coaxially connected from top to bottom along the axial direction and have gradually increased outer diameters, the third rotation body 3323 is exposed below the rotation shaft installation hole 321 and extends into the annular track 13, the first rotation body 3321 and the second rotation body 3322 are exposed above the rotation shaft installation hole 321, the magnetic ring 331 is coaxially fixed and sleeved on the periphery of the first rotation body 3321, the piston rotation shaft 33 further includes a water stop ring 333, and a water stop ring 333, which are sleeved on the periphery of the second rotation body 33, And the magnetic ring sleeve 334 is sealed at the upper end and is opened at the lower end, and the magnetic ring sleeve 334 is sleeved on the periphery of the magnetic ring 331 from top to bottom and extends downwards to be sleeved on the periphery of the water-isolating ring 333.

As shown in fig. 7-9 and 16, in order to facilitate the installation of the water stop plate, a water stop plate installation groove 7 for fixedly installing the water stop plate 4 is provided in the metering groove 12, and the water stop plate installation groove 7 comprises a first groove 71 vertically provided on the side wall of the metering groove 12, a third groove 73 provided in parallel with the first groove 71 and on the outer circumferential wall of the annular winding 14, a second groove 72 provided at the bottom of the metering groove 12 and connected between the lower end of the first groove 71 and the lower end of the third groove 73, and a fourth groove 74 provided at the bottom of the plate body 21 and in parallel with the second groove 72 and connected between the upper end of the first groove 71 and the upper end of the third groove 73;

the water stop plate 4 includes that the radial direction of following the wiring pivot 15 extends the water stop plate body 41 that sets up and set up the spacing protruding piece 42 that is used for playing the anticreep limiting displacement in the one end that the water stop plate body 41 stretched into arc breach 36, the interval between the both sides edge of piston bayonet 34 is greater than the thickness of water stop plate 4 and is less than the external diameter of spacing protruding piece 42 is so that spacing protruding piece 42 can not follow in the arc breach 36 gets into piston bayonet 34.

As shown in fig. 8 and 12, preferably, the number of the sidewall inlet diversion holes 37 and the sidewall outlet diversion holes 38 is two or more, and at least one sidewall inlet diversion hole 37 and at least one sidewall outlet diversion hole 38 are provided in the upper portion of the sidewall of the piston collar 31 for communicating the upper outlet cavity d with the metering slot 12 located outside the piston collar 31, and at least one sidewall inlet diversion hole 37 and at least one sidewall outlet diversion hole 38 are provided in the lower portion of the sidewall of the piston collar 31 for communicating the lower inlet cavity c with the metering slot 12 located outside the piston collar 31;

the number of the baffle guide holes 35 is multiple, and each baffle guide hole 35 forms a first guide hole ring 351, a second guide hole ring 352 and a third guide hole ring 353 which have sequentially increased diameters around the axis of the piston rotating shaft 33; each flow guide hole ring is provided with a plurality of baffle flow guide holes 35 which are sequentially distributed at intervals along the circumferential direction of the flow guide hole ring.

As shown in fig. 5-6 and 16, preferably, the upper cover plate 2 further includes an annular convex ring 23 disposed at the bottom of the plate body 21 and extending downward into the metering groove 12 at a position corresponding to the position of the annular winding 14, the hall sensor mounting grooves 22 are distributed on the wall body of the annular convex ring 23, and the piston partition 32 of the piston 3 is sandwiched between the annular convex ring 23 of the upper cover plate 2 and the annular winding 14 of the piston case 1;

the upper cover plate 2 is further provided with more than two hollow grooves 24 which are arranged at the middle part of the plate body 21 at intervals along the circumferential direction around the winding rotating shaft 15 and extend to the outer peripheral wall of the plate body 21 from inside to outside along the radial direction, each hollow groove 24 is communicated with one end of the radial direction close to the central axis, and the upper end opening of the water outlet hole b is communicated with at least one hollow groove 24.

As shown in fig. 2 to 6, in order to facilitate the positioning and sealing between the box body and the upper cover plate, the upper surface of the box body 11 is further provided with more than one positioning pins 111 which are distributed at intervals along the circumferential direction around the winding rotating shaft 15 and extend upwards, the upper cover plate 2 further comprises a positioning groove 25 which is arranged at the bottom of the plate body 21 and is in fit connection with each positioning pin 111, and a sealing ring mounting groove 26 which is arranged at the bottom of the plate body 21 along the circumferential direction around the winding rotating shaft 15 and is open downwards, and the base meter of the positive displacement intelligent water meter further comprises a sealing ring 8 which is arranged in the sealing ring mounting groove 26 and is pressed between the sealing ring mounting groove 26 and the upper surface of the box body 11.

Preferably, the outer peripheral wall of the outer flange at the upper end of the watch case 9 is further provided with more than four positioning notches 94, and the upper end face of the watch case 94 is further provided with a mounting threaded hole 95 for facilitating the fixed mounting of the base watch.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a positive displacement intelligence water gauge base table which characterized in that: the water-saving water dispenser comprises a watch case (9) and a movement, wherein a movement containing cavity (91) is arranged inside the watch case (9), the movement containing cavity (91) comprises a watch case water inlet cavity (911) located at the bottom and a watch case water outlet cavity (912) located at the middle part, a watch case (92) used for communicating the outside with the movement containing cavity (91) bottom water inlet cavity (911) is arranged on one side of the bottom of the watch case (9), a water outlet pipe (93) used for communicating the outside with the movement containing cavity (91) middle watch case water outlet cavity (912) is arranged on one side of the middle part of the watch case (9), the movement is fixedly arranged in the movement containing cavity (91), and the watch case water inlet cavity (911) at the bottom of the movement containing cavity (91) and the middle watch case water outlet cavity (912) are isolated from each other through the matching contact of the peripheral wall of the movement and; the movement comprises a piston box (1), an upper cover plate (2), a piston (3), a water-stop plate (4), a Hall sensor (5) and a control module;

the piston box (1) comprises a box body (11), a cylindrical metering groove (12) which is vertically arranged in the box body (11) and has an open top end, a winding rotating shaft (15) which is coaxially and fixedly arranged at the bottom of the metering groove (12) and extends upwards along the vertical direction, and an annular winding (14) which coaxially surrounds the winding rotating shaft (15), wherein the heights of the winding rotating shaft (15) and the annular winding (14) are both lower than the height of the side wall of the metering groove (12), and an annular track (13) is formed between the inner peripheral wall of the annular winding (14) and the outer peripheral wall of the winding rotating shaft (15); the upper cover plate (2) comprises a plate body (21) which is covered at the upper end of the box body (11) and can seal the top end opening of the metering groove (12) of the piston box (1);

the water stop plate (4) is vertically and fixedly arranged between the bottom wall of the metering groove (12) and the bottom of the plate body (21) and extends from the groove side wall of the metering groove (12) to the outer peripheral wall of the annular winding (14) in the radial direction; the box body (11) is provided with a water inlet hole (a) which penetrates through the bottom wall of the metering groove (12) and enables the metering groove (12) to be communicated with a watchcase water inlet cavity (911) outside the movement on the bottom wall of the metering groove (12) and the outer circumferential wall of the annular winding (14), a water outlet hole (b) which penetrates through the plate body (21) and enables the metering groove (12) to be communicated with a watchcase water outlet cavity (912) outside the movement is arranged on the plate body (21) at a position between the side wall of the metering groove (12) and the outer circumferential wall of the annular winding (14), and the water inlet hole (a) and the water outlet hole (b) are respectively positioned at the outer sides of two side plate surfaces of the water-stop plate (4);

the piston (3) comprises a circular piston sleeve ring (31) which is vertically arranged in the metering groove (12) and sleeved on the periphery of the annular winding (14), a piston partition plate (32) which is transversely arranged in the piston sleeve ring (31) and divides the inner cavity of the piston sleeve ring (31) into a lower water inlet cavity (c) and an upper water outlet cavity (d), and a piston rotating shaft (33) which is coaxially connected with the middle part of the piston partition plate (32), vertically extends downwards into the annular track (13) and can rotate around the winding rotating shaft (15) along the annular track (13), a piston bayonet (34) which extends upwards from the bottom to the top is vertically arranged on the side wall of the piston sleeve ring (31), an arc-shaped notch (36) which is communicated with the piston bayonet (34) and gradually increases and then gradually decreases from the position of the piston bayonet (34) to the direction close to the center of the piston partition plate (32) is arranged on the piston partition plate (32), the water stop plate (4) is clamped in the piston bayonet (34) and the arc-shaped notch (36), and the piston lantern ring (31) can slide and rotate relative to the water stop plate (4) through the matching of the piston bayonet (34) and the arc-shaped notch (36) with the water stop plate (4);

the side wall of the piston sleeve ring (31) is respectively provided with more than one side wall water inlet guide hole (37) and more than one side wall water outlet guide hole (38) at the position close to the edges of the two sides of the piston bayonet (34), the side wall water inlet guide hole (37) and the side wall water outlet guide hole (38) can enable the inner cavity of the piston sleeve ring (31) to be communicated with an external metering tank (12), the side wall water inlet guide hole (37) and the water inlet hole (a) are positioned at the same side of the water stop plate (4), and the side wall water outlet guide hole (38) and the water outlet hole (b) are positioned at the same side of the water stop plate (4); more than one baffle plate flow guide hole (35) which enables the upper water outlet cavity (d) and the lower water inlet cavity (c) to be communicated is formed in the piston baffle plate (32);

the piston rotating shaft (33) is coaxially and fixedly provided with a magnetic ring (331) which can rotate synchronously around the winding rotating shaft (15) along with the piston rotating shaft (33), the upper cover plate (2) is further provided with two Hall sensor mounting grooves (22) which are sequentially arranged at the bottom of the plate body (21) at intervals along the circumferential direction coaxial with the annular track (13) and extend downwards to the metering tank (12) along the vertical direction, the two Hall sensors (5) are fixedly mounted in the two Hall sensor mounting grooves (22) respectively, the two Hall sensors (5) are used for synchronously acquiring magnetic field change signals generated by the magnetic ring (331) in the rotating process of the piston rotating shaft (33) around the winding rotating shaft (15) and converting the magnetic field change signals into electric pulse signals for outputting outwards, the control module comprises an MCU module, and the MCU module is connected with the two Hall sensors (5) simultaneously, the water flow volume meter is used for receiving electric pulse signals output by the two Hall sensors (5) to calculate a water flow volume value according to the signals.

2. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the base table of the positive displacement intelligent water meter further comprises an inner tight ring (10) which is connected with the inner peripheral wall of the containing cavity (91) of the movement through threads, the bottom of the inner tight ring (10) is pressed on the top of the upper cover plate (2), a chamfer inclined plane (27) is arranged on the peripheral edge of the upper end face of the upper cover plate (2), a flat gasket (102) is further arranged between the inner tight ring (10) and the upper cover plate (2), and an O-shaped sealing ring (101) which is tightly sleeved on the chamfer inclined plane (27) is arranged between the flat gasket (102) and the inner peripheral wall of the containing cavity (91) of the upper cover plate (2) and the movement.

3. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the outer periphery of the upper end of the piston box (1) is provided with an annular outer flange (16) which extends outwards along the radial direction of the winding rotating shaft (15), the inner peripheral wall of the movement accommodating cavity (91) is further provided with an annular inner flange (913) which extends inwards along the radial direction close to the axis of the winding rotating shaft (15), the annular outer flange (16) is lapped above the annular inner flange (913), and a square sealing ring (103) is further arranged between the bottom of the annular outer flange (16) and the top of the annular inner flange (913).

4. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the control module further comprises a sending module, wherein the sending module is connected with the MCU module and used for receiving the water flow volume value calculated by the MCU module and sending the water flow volume value to an external receiving platform through a communication network.

5. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the base meter of the positive displacement intelligent water meter further comprises a filter screen (6) which is fixedly sleeved on the periphery of the lower end of the piston box (1) and used for filtering water flow entering the water inlet hole (a), and a plurality of filter holes (61) are uniformly distributed on the filter screen (6).

6. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the coaxial fixed cover in periphery around connecing pivot (15) has been connect axle sleeve (151), the center of piston baffle (32) is provided with vertical through piston baffle (32) two planar pivot mounting hole (321) from top to bottom around axial position, piston pivot (33) include revolving axle (332), revolving axle (332) include top-down along axial direction coaxial coupling set up in proper order and the outside diameter increase gradually first solid of revolution (3321), second solid of revolution (3322) and third solid of revolution (3323), third solid of revolution (3323) expose in the below of pivot mounting hole (321) and stretch into circular orbit (13), first solid of revolution (3321) and second solid of revolution (3322) all expose in the top of pivot mounting hole (321), first solid of revolution (3321) periphery is arranged in to the coaxial fixed cover of magnetic ring (331), piston pivot (33) still include the cover arrange second solid of revolution (3322) periphery and be in magnetic ring (33331) and piston baffle (32) periphery ) The magnetic ring sleeve (334) is sleeved on the periphery of the magnetic ring (331) from top to bottom and extends downwards to the periphery of the water isolating ring (333).

7. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: a water stop plate mounting groove (7) for fixedly mounting a water stop plate (4) is formed in the metering groove (12), and the water stop plate mounting groove (7) comprises a first groove (71) vertically arranged on the side wall of the metering groove (12), a third groove (73) arranged in parallel with the first groove (71) and positioned on the outer peripheral wall of the annular winding (14), a second groove (72) arranged at the bottom of the metering groove (12) and connected between the lower end of the first groove (71) and the lower end of the third groove (73), and a fourth groove (74) arranged at the bottom of the plate body (21) and in parallel with the second groove (72) and connected between the upper end of the first groove (71) and the upper end of the third groove (73);

the water stop plate (4) include along the water stop plate body (41) of extending the setting around the radial direction who connects pivot (15) and set up the spacing protruding piece (42) that is used for playing the anticreep limiting displacement of the one end that stretches into in arc breach (36) at water stop plate body (41), interval between the both sides edge of piston bayonet socket (34) is greater than the thickness of water stop plate (4) and is less than the external diameter of spacing protruding piece (42) is so that in spacing protruding piece (42) can not follow arc breach (36) entering piston bayonet socket (34).

8. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the number of the side wall water inlet diversion holes (37) and the number of the side wall water outlet diversion holes (38) are more than two, at least one side wall water inlet diversion hole (37) and at least one side wall water outlet diversion hole (38) are arranged on the upper part of the side wall of the piston lantern ring (31) and are used for communicating the upper water outlet cavity (d) with the metering tank (12) positioned outside the piston lantern ring (31), and at least one side wall water inlet diversion hole (37) and at least one side wall water outlet diversion hole (38) are arranged on the lower part of the side wall of the piston lantern ring (31) and are used for communicating the lower water inlet cavity (c) with the metering tank (12) positioned outside the piston lantern ring (31);

the number of the partition plate flow guide holes (35) is multiple, and the partition plate flow guide holes (35) form a first flow guide hole ring (351), a second flow guide hole ring (352) and a third flow guide hole ring (353) which are sequentially increased in diameter around the axis of the piston rotating shaft (33); each flow guide hole ring is provided with a plurality of baffle flow guide holes (35) which are sequentially distributed at intervals along the circumferential direction of the flow guide hole ring.

9. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the upper cover plate (2) further comprises an annular convex ring (23) which is arranged at the bottom of the plate body (21), extends downwards into the metering groove (12) and corresponds to the position of the annular winding (14), the Hall sensor mounting grooves (22) are distributed on the wall body of the annular convex ring (23), and a piston partition plate (32) of the piston (3) is clamped between the annular convex ring (23) of the upper cover plate (2) and the annular winding (14) of the piston box (1);

upper cover plate (2) still are equipped with more than two along around the circumferencial direction interval around the wiring pivot (15) establish at plate body (21) middle part and extend along radial direction and from inside to outside hollow groove (24) that extend to plate body (21) periphery wall, each hollow groove (24) are in the radial one end intercommunication near the central axis, the upper end opening of apopore (b) switches on with wherein at least one hollow groove (24) mutually.

10. The base meter of a positive displacement intelligent water meter as set forth in claim 1, wherein: the upper surface of box body (11) still is provided with more than one along the circumferencial direction interval distribution around the wiring pivot (15) and upwards locating pin (111) that extend, upper cover plate (2) still including set up in the bottom of plate body (21) and with constant head tank (25) that each locating pin (111) cooperation is connected and along set up in the bottom of plate body (21) and downwardly opening's sealing washer mounting groove (26) around the circumferencial direction around wiring pivot (15), positive displacement intelligence water gauge base table is still including setting up sealing washer (8) in sealing washer mounting groove (26) and roof pressure between the upper surface of sealing washer mounting groove (26) and box body (11).

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