CN220206749U - Rotor device and flow sensor and ball valve with same - Google Patents

Abstract

The utility model discloses a rotor device, which belongs to the technical field of metering equipment, and adopts the technical scheme that: the rotor device comprises an impeller, a first support and a second support, wherein the impeller is arranged between the first support and the second support, a rotating shaft is arranged in the axial direction of the impeller, two ends of the rotating shaft are respectively connected with the first support and the second support in a rotating mode, a first magnetic block, a second magnetic block and a balancing weight are circumferentially arranged on the impeller, and magnetic poles of the outer end faces of the first magnetic block and the second magnetic block are opposite. A Hall sensor is close to the impeller, the outer end face of the first magnetic block is assumed to be an N pole, the outer end face of the second magnetic block is assumed to be an S pole, when the Hall sensor detects the N pole, a high pulse level is output, and when the Hall sensor detects the S pole, a low pulse level is output; the positive rotation and the reverse rotation of the impeller can be distinguished through the time from the rotation of the second magnetic block to the first magnetic block. The external controller can not record the number of turns of impeller reversal, so that the detection precision of the rotor device is improved. The utility model also discloses a flow sensor and a ball valve.

Description

Rotor device and flow sensor and ball valve with same

Technical Field

The utility model belongs to the technical field of metering equipment, and particularly relates to a rotor device, a flow sensor with the rotor device and a ball valve.

Background

The flow meter is one of important meters in industrial measurement, with the development of industrial production, the accuracy and the range of flow measurement are increasingly required, and the flow measurement technology is gradually changed day by day, so that various types of flow meters are sequentially developed to adapt to various purposes. The diversity, specificity and price differences of today's flow meters are due to the complexity of the fluid properties, flow conditions and sensing mechanisms.

The water flow sensor disclosed in Chinese patent publication No. CN211291580U comprises a base, an upper cover, an impeller shaft, a magnetic ring and a Hall sensor, wherein the base comprises an impeller cavity, a water inlet interface and a water outlet interface which are communicated with the impeller cavity, the Hall sensor is arranged on the upper cover, the magnetic ring rotates along with the impeller, and the magnetic ring is matched with the Hall sensor; the upper cover is buckled with the upper opening of the impeller cavity; the impeller comprises a round seat plate, a shaft seat arranged at the center of one surface of the round seat plate, an end seat arranged at the center of the other surface of the round seat plate, a plurality of blades surrounding the shaft seat and a shaft hole penetrating through the shaft seat and the end seat; the end seat is provided with a plug-in part which is inserted into the magnetic ring and in interference fit, and the end seat supports the magnetic ring. The liquid flows from the water inlet interface to the water outlet interface, the impeller rotates under the pushing of flowing liquid, the magnetic ring also rotates along with the impeller, the rotating speed of the impeller linearly changes along with the flow, the Hall sensor detects the rotation of the magnetic ring to generate high and low pulse levels, so that the change of the flow of the liquid is measured, the high and low pulse levels are converted into specific flow parameters through the external controller, and finally the metering of the flow of the liquid is realized.

According to the scheme, the flow and the flow speed of the fluid in a normal state can be detected, if the situation that the water flow is reversed due to the influence of water interruption or water hammer on the vicinity of the impeller is caused, the reversed flow of the water can also impact the impeller, so that the impeller reversely rotates, and finally the metering precision of the water flow sensor can be influenced.

A small-sized expandable water flow sensor disclosed in Chinese patent publication No. CN206019733U comprises a water inlet end, a rotor assembly, a Hall assembly and a water outlet end; wherein the water inlet end is provided with a water inlet valve body; the water outlet end is provided with a water outlet valve body; the rotor assembly is positioned between the water inlet valve body and the water outlet valve body and consists of an eddy generator, a magnetic rotor and a guide sleeve; the Hall assembly consists of a lead, a Hall IC and a PCB, and is fixed by a Hall fixing device, and the Hall fixing device and the water outlet valve body are integrally formed.

The water flow sensor changes the specific structure of the rotor assembly, but can only detect the fluid flow in a normal flow state, still cannot cope with the countercurrent state of water flow, the magnetic rotor can output pulse signals to the Hall IC in forward and reverse rotation, the water flow sensor does not have a device or a function for distinguishing the pulse signals, the number of times of reverse rotation of the magnetic rotor can be overlapped along with the increase of the using time, and finally the metering precision of the water flow sensor is influenced.

Disclosure of Invention

The present utility model is directed to solving the above problems of the prior art, and provides a rotor device, where the first technical problem to be solved by the present utility model is: how to improve the accuracy of the rotor device detection.

The present utility model is directed to solving the above problems of the prior art, and provides a flow sensor, and a second technical problem to be solved by the present utility model is: how to improve the accuracy of flow sensor detection.

The utility model aims at solving the problems existing in the prior art, and provides a ball valve, and the third technical problem to be solved by the utility model is as follows: how to improve the accuracy of ball valve detection.

The first technical object of the present utility model can be achieved by the following technical scheme:

the rotor device comprises an impeller, a first support and a second support, wherein the impeller is arranged between the first support and the second support, a rotating shaft is arranged in the axial direction of the impeller, two ends of the rotating shaft are respectively connected with the first support and the second support in a rotating mode, a first magnet block, a second magnet block and a balancing weight are circumferentially arranged on the impeller, and magnetic poles of the outer end faces of the first magnet block and the second magnet block are opposite.

Through the technical scheme, a Hall sensor is close to the impeller, the outer end face of the first magnetic block is assumed to be an N pole, the outer end face of the second magnetic block is assumed to be an S pole, when the Hall sensor detects the N pole of the first magnetic block, a high pulse level is output, and when the Hall sensor detects the S pole of the second magnetic block, a low pulse level is output; when the impeller rotates positively, the sequence close to the Hall sensor is a first magnet, a second magnet and a balancing weight in sequence, or the second magnet, the balancing weight and the first magnet, or the balancing weight, the first magnet and the second magnet, the first magnet is taken as a reference, when the impeller rotates positively, a pulse frequency (commonality obtained by multiple rotations of the impeller) is necessarily formed by the first magnet, the second magnet and the balancing weight in sequence, otherwise, if the impeller rotates reversely, the same pulse signal as that of the impeller can not be obtained, but the Hall sensor can not detect the balancing weight, therefore, the time for rotating the first magnet for one circle is 1 second, the time for rotating the second magnet to the first magnet is 1/3 second, and the time for rotating the second magnet to the first magnet for rotating reversely is 2/3 seconds, so that the positive rotation and the reverse rotation of the impeller can be distinguished through the time for rotating the second magnet to the first magnet. That is, the pulse signal transmitted from the impeller during the forward rotation is predetermined, and if the impeller transmits a pulse signal different from the pulse signal during the forward rotation, the impeller is indicated to be in the reverse rotation, and the external controller does not record the rotation number of the impeller at this time, thereby improving the detection accuracy of the rotor device.

In the rotor device, the first magnetic block, the second magnetic block and the balancing weight have equal intervals. The first magnet, the second magnet and the balancing weights are distributed in a triangular shape, and the arrangement of the balancing weights not only can ensure the stability of the impeller during rotation, but also can distinguish the forward rotation and the reverse rotation of the impeller.

In the rotor device, the impeller has a curved inner vane. The curved inner vane can better drive the impeller to rotate.

In the rotor device, rectifying tubes are arranged at the outer ends of the inner fins, a plurality of containing grooves are formed in the rectifying tubes at intervals, and the first magnet block, the second magnet block and the balancing weights are respectively arranged in the corresponding containing grooves. The first magnetic block, the second magnetic block and the balancing weight are respectively arranged in the independent accommodating grooves, so that the normal rotation of the impeller is not interfered.

In the rotor device, a plurality of outer fins are provided on the outer wall of the rectifying tube, and the outer fins and the inner fins have the same bending direction. The water flow can act on the outer wing plate and the inner wing plate simultaneously, so that the rotating speed of the impeller is ensured to correspond to the water flow.

In the above rotor device, the outer blade covers the end of the accommodation groove. The outer fin can limit the first magnet, the second magnet and the balancing weight in the accommodating groove, and meanwhile, the first magnet and the second magnet are closest to the outermost side of the impeller, namely, the distance between the outer fin and the Hall sensor is shortened, and the detection precision of the rotor device is further improved.

In the above rotor device, the first bracket has a plurality of first through holes, the second bracket has a plurality of second through holes, and both the first through holes and the second through holes are communicated with the rectifier tube. The water flow can pass through the first through hole and enter the rectifying tube and then is discharged through the second through hole, so that the influence on the flow velocity of the water flow is reduced.

In the rotor device, a first mounting groove is formed in the first bracket, a first top seat is arranged in the first mounting groove, and an assembly groove is formed in the end part of the first top seat; the mounting groove II is formed in the support II, the top seat II is arranged in the mounting groove II, the assembly groove II is formed in the end portion of the top seat II, and two ends of the rotating shaft are respectively connected with the assembly groove I and the assembly groove II in a rotating mode. The two ends of the rotating shaft are respectively connected with the first assembling groove and the second assembling groove in a rotating way, so that the impeller can rotate freely by taking the rotating shaft as an axis.

In the rotor device, the first bracket is provided with a first limiting ring, and the second bracket is provided with a second limiting ring. And the first limiting ring and the second limiting ring are arranged so as to limit the first bracket and the second bracket.

In the rotor device, the distance from the center of the impeller to the outer blade is smaller than the radius of the first limiting ring and the second limiting ring. The outer diameter of the outer wing piece is smaller than that of the first limiting ring or the second limiting ring, and when the rotor device is installed in the flow sensor or the ball valve, the outer wing piece cannot interfere with the normal rotation of the impeller.

The second technical purpose of the utility model can be achieved by the following technical scheme:

the flow sensor comprises a mounting pipe, a Hall sensor I and the rotor device, wherein a detection flow passage for fluid to pass through is formed in the mounting pipe, a water inlet and a water outlet are respectively formed in two ends of the detection flow passage, a limiting component I for limiting the support I and the support II is arranged in the detection flow passage, and the impeller is rotationally arranged between the support I and the support II; the installation pipe is provided with a detection groove I for installing the Hall sensor I, and the Hall sensor I is close to the impeller.

Through the technical scheme, the limiting component is used for limiting the rotor device, the mounting pipe is communicated with the flow channel to be detected, liquid to be detected is discharged through the water inlet, the detection flow channel and the water outlet, flowing liquid drives the impeller to rotate, and when the impeller rotates, the Hall sensor outputs pulse signals, so that the metering of the liquid to be detected is realized. If the medium of the detection flow channel is reversed, the impeller reversely rotates, and the external controller does not record the number of turns of the impeller reversely rotating, so that the detection precision of the flow sensor is improved.

In the above flow sensor, the detection flow channel is provided with a first positioning groove and a second positioning groove, the first positioning groove is limited by the first bracket, and the second positioning groove is limited by the second bracket. The first bracket and the second bracket are respectively limited in the first positioning groove and the second positioning groove through the first limiting component, so that the position stability of the rotor device in the mounting pipe is ensured.

In the above flow sensor, the first limiting component includes a first clamping spring and a second clamping spring, the first clamping spring is disposed in the first positioning groove and limits the first bracket, and the second clamping spring is disposed in the second positioning groove and limits the second bracket. The first clamp spring limits the first bracket in the first positioning groove, the second clamp spring limits the second bracket in the second positioning groove, and the limiting part is used for limiting the first bracket and the second bracket.

The third technical object of the present utility model can be achieved by the following technical scheme:

the ball valve comprises a valve body, a ball core, a valve rod, a plug, a Hall sensor II and a rotor device of any one of the above, wherein a water outlet flow channel, a water inlet flow channel and a mounting hole are formed in the valve body, the water inlet flow channel is communicated with the water outlet flow channel, and the mounting hole is communicated with the water outlet flow channel; and the ball core rotate set up in the valve body, have in the ball core will the runner intercommunication of intaking the connecting runner of runner, the valve rod rotate connect in the mounting hole, just the inner of valve rod with the ball core is connected, the valve body lower extreme is provided with the connecting hole, the end cap can dismantle connect in the connecting hole, set up on the end cap and supply the detection groove second of hall sensor installation, rotor device set up in the ball core, hall sensor second is close to rotor device.

Through above-mentioned technical scheme, in this ball valve connection water supply pipe, open the back with the ball core through the valve rod, rivers follow water inlet channel, connecting runner, play water runner discharge, and the rivers that flow in the connecting runner can drive impeller rotation, and hall sensor two detects pivoted impeller and output corresponding pulse signal, realize the measurement to water supply pipe. After the ball core is closed by the valve rod, the water inlet flow channel and the water outlet flow channel are separated by the ball core, and the ball valve is in a closed state. If the water flow in the connecting flow channel is reversed to cause the impeller to rotate reversely, the external controller connected with the Hall sensor II does not record the number of turns of the impeller, and further the metering accuracy of the ball valve is improved.

In the ball valve, a third positioning groove and a fourth positioning groove are formed in the connecting flow channel, the first bracket is arranged in the third positioning groove, and the second bracket is arranged in the fourth positioning groove; and a limiting part II for limiting the first bracket and the second bracket is also arranged in the connecting flow channel (531). The limiting part II is used for limiting the first bracket and the second bracket, and is equivalent to positioning the rotor device, so that the impeller can normally rotate in the connecting flow channel, and deformation or displacement of the first bracket and the second bracket under the action of water flow and water pressure is avoided.

In the ball valve, the second limiting part comprises a third clamping spring and a fourth clamping spring, the third clamping spring is arranged in the third positioning groove and limits the first bracket, and the fourth clamping spring is arranged in the fourth positioning groove and limits the second bracket. The third clamp spring limits the first bracket in the third positioning groove, the fourth clamp spring limits the second bracket in the fourth positioning groove, and the positions of the first bracket and the second bracket in the connecting runner are further guaranteed.

In the ball valve, a yielding hole or a yielding groove is formed in the lower end of the ball core, and the inner end of the plug can extend into the yielding hole or the yielding groove and is close to the impeller. The setting of hole, the groove of stepping down has further shortened the interval between hall sensor second and the magnetic path (or magnetic path two, balancing weight), can effectively promote the detection precision of this ball valve.

In summary, compared with the prior art, the utility model has the following beneficial effects: the pulse signal transmitted when the impeller rotates positively is preset, if the impeller transmits the pulse signal frequency different from that of the impeller when the impeller rotates positively, the impeller rotates negatively, and an external controller cannot record the rotation number of the impeller at the moment, so that the detection precision is improved; secondly, the positive rotation and the reverse rotation of the impeller can be accurately distinguished through the time difference from the rotation of the second magnetic block to the rotation of the first magnetic block; the utility model has reasonable structural design and strong adaptability, and can be applied to most flow detection equipment such as flow sensors, ball valves and the like.

Drawings

FIG. 1 is a schematic view of an assembled rotor apparatus;

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

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is another side schematic view of FIG. 3;

FIG. 5 is a schematic view of the impeller in an embodiment;

FIG. 6 is a schematic side view of an impeller in an embodiment;

FIG. 7 is a schematic back view of FIG. 6;

FIG. 8 is a schematic structural view of a first bracket according to an embodiment;

fig. 9 is a schematic structural diagram of a second bracket in the embodiment;

FIG. 10 is a schematic cross-sectional view of an installation tube in an embodiment;

FIG. 11 is a schematic diagram of a flow sensor according to an embodiment;

FIG. 12 is a schematic cross-sectional view of FIG. 11;

FIG. 13 is a schematic view of another construction of a flow sensor according to an embodiment;

FIG. 14 is a schematic view of the structure of a ball valve in an embodiment;

FIG. 15 is a schematic cross-sectional view of FIG. 14;

FIG. 16 is a schematic view, partially in section, of a ball valve in an embodiment;

FIG. 17 is a schematic cross-sectional view of a core in an embodiment;

FIG. 18 is a schematic view of another structure of the ball core for showing the second limiting member;

fig. 19 is a schematic side view of fig. 14.

Reference numerals: 100. an impeller; 110. a rotating shaft; 120. an inner fin; 130. rectifying tube; 131. a first magnetic block; 132. a second magnetic block; 133. balancing weight; 134. a receiving groove; 140. an outer fin;

200. a first bracket; 210. a first through hole; 220. a first mounting groove; 221. a first top seat; 222. an assembly groove I; 230. a first limiting ring;

300. a second bracket; 310. a second through hole; 320. a second mounting groove; 321. a second top seat; 322. an assembly groove II; 330. a second limiting ring;

410. installing a pipe; 411. detecting a flow channel; 4111. a water inlet; 4112. a water outlet; 412. detecting a first groove; 413. a first gap; 414. a positioning groove I; 415. a positioning groove II; 420. a Hall sensor I; 430. a first limiting component; 431. a clamp spring I; 432. a second clamp spring; 433. a first stop block;

510. a valve body; 511. a water outlet flow passage; 512. a water inlet flow passage; 513. a mounting hole; 514. a connection hole; 520. a valve cap;

530. a core; 531. a connecting runner; 5311. a positioning groove III; 5312. a positioning groove IV; 532. a second gap; 533. a relief hole; 534. a relief groove;

540. a valve stem; 550. a plug; 551. a second detection groove; 560. a Hall sensor II;

570. a second limiting component; 571. a clamp spring III; 572. a clamping spring IV; 573. and a second stop block.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 9, the rotor device comprises an impeller 100, a first bracket 200 and a second bracket 300, wherein the impeller 100 is positioned between the first bracket 200 and the second bracket 300, a rotating shaft 110 is arranged in the axial direction of the impeller 100, and two ends of the rotating shaft 110 are respectively in rotating connection with the first bracket 200 and the second bracket 300, so that the impeller 100 can rotate by taking the rotating shaft 110 as an axis, a first magnetic block 131, a second magnetic block 132 and a balancing weight 133 are arranged on the impeller 100 at intervals in the circumferential direction, and the magnetic poles of the outer end surfaces of the first magnetic block 131 and the second magnetic block 132 are opposite; if the outer end face of the first magnetic block 131 is the N pole, the outer end face of the second magnetic block 132 is the S pole, and the outer end faces of the first magnetic block 131 and the second magnetic block 132 are the end faces far away from the rotating shaft 110. In this embodiment, the rotating shaft 110 and the impeller 100 may be adhered, clamped or integrally formed, and both ends of the rotating shaft 110 are provided with chamfers.

Preferably, the first magnetic block 131, the second magnetic block 132 and the balancing weight 133 have equal spacing, and the degrees of the included angles between the first magnetic block 131, the second magnetic block 132 and the balancing weight 133 are 120 degrees, and the weight of the balancing weight 133 is close to the weight of the first magnetic block 131 or the second magnetic block 132.

The impeller 100 is provided with at least one spiral bent inner fin 120, the outer end of the inner fin 120 is provided with a rectifying tube 130, the inner wall of the rectifying tube 130 is connected with the outer end of each inner fin 120, a plurality of containing grooves 134 are circumferentially arranged on the rectifying tube 130 at intervals, the number of the containing grooves 134 corresponds to the total number of the first magnet 131, the second magnet 132 and the balancing weights 133, and the first magnet 131, the second magnet 132 and the balancing weights 133 are respectively arranged in the corresponding containing grooves 134.

Alternatively, the first magnetic block 131, the second magnetic block 132, and the balancing weight 133 may be circumferentially spaced apart from the inner fin 120, so that the rectifying tube 130 is omitted.

The outer wall of the rectifying tube 130 is provided with a plurality of outer fins 140 at intervals, and the outer fins 140 and the inner fins 120 are bent in the same direction. In the present embodiment, the outer fins 140 are the same as the inner fins 120 in number and in one-to-one correspondence. Alternatively, the outer fins 140 may be increased or decreased accordingly, so that the outer fins 140 are more or less than the inner fins 120, as long as the stability of the impeller 100 during rotation is maintained.

The outer tab 140 covers the end of the receiving slot 134, and in particular, the end of the receiving slot 134 is located between the outer tab 140 and the rectifier tube 130.

The first bracket 200 has a plurality of first through holes 210, the second bracket 300 has a plurality of second through holes 310, and the first through holes 210 and the second through holes 310 are all communicated with the rectifier tube 130, in this embodiment, the first bracket 200 and the second bracket 300 have the same structure and are symmetrically arranged for production and assembly. When the device is specifically applied to a flow sensor, a ball valve or other detection equipment, one of the first bracket 200 and the second bracket 300 can also be integrally formed in the flow sensor or the ball valve.

The bracket I200 is provided with a mounting groove I220, a top seat I221 is arranged in the mounting groove I220, and the end part of the top seat I221 is provided with an assembling groove I222; the second bracket 300 is provided with a second mounting groove 320, a second top seat 321 is arranged in the second mounting groove 320, the end part of the second top seat 321 is provided with a second mounting groove 322, and two ends of the rotating shaft 110 are respectively and rotatably connected with the first mounting groove 222 and the second mounting groove 322. Of course, the first top seat 221 and the second top seat 321 may be replaced by bearings or shaft sleeves, so that two ends of the rotating shaft 110 are connected with the bearings or shaft sleeves.

The first bracket 200 is provided with a first limiting ring 230, and the second bracket 300 is provided with a second limiting ring 330; the distance from the center of the impeller 100 to the outer vane 140 is smaller than the radius of the first limit ring 230 and the second limit ring 330, that is, the overall diameter of the impeller 100 is smaller than the diameters of the first limit ring 230 and the second limit ring 330, so that the impeller 100 can rotate normally.

As shown in fig. 10 to 13, the flow sensor includes a mounting tube 410, a hall sensor 420 and the rotor device, a detecting flow passage 411 for fluid to pass through is provided in the mounting tube 410, two ends of the detecting flow passage 411 are respectively provided with a water inlet 4111 and a water outlet 4112, a first limiting component 430 is provided in the detecting flow passage 411, the first limiting component 430 is used for limiting the first bracket 200 and the second bracket 300, the impeller 100 is rotatably arranged between the first bracket 200 and the second bracket 300, and a gap 413 is provided between an inner wall of the detecting flow passage 411 and the outer wing 140; the mounting tube 410 is provided with a first detection groove 412 for mounting a first hall sensor 420, and the first hall sensor 420 is close to the first magnet 131 (or the second magnet 132 and the balancing weight 133) on the impeller 100. The first hall sensor 420 may be electrically connected to a control IC (or controller) through which the pulse signal output from the first hall sensor 420 is received and processed.

Referring to fig. 10 and 12, the detection flow channel 411 has a first positioning groove 414 and a second positioning groove 415, the first positioning groove 414 is close to the water inlet 4111, the second positioning groove 415 is close to the water outlet 4112, the first positioning ring 230 is clamped in the first positioning groove 414, and the second positioning ring 330 is clamped in the second positioning groove 415.

The first limiting part 430 comprises a first clamping spring 431 and a second clamping spring 432, the first clamping spring 431 is clamped in the first positioning groove 414 and limits the first bracket 200, the second clamping spring 432 is clamped in the second positioning groove 415 and limits the second bracket 300, and therefore limiting of the first bracket 200 and the second bracket 300 is achieved. Grooves for installing the first clamp spring 431 and the second clamp spring 432 can be formed in the first positioning groove 414 and the second positioning groove 415.

Referring to fig. 13, as another solution, one of the first snap spring 431 and the second snap spring 432 may be replaced by the first stopper 433, so long as the first bracket 200 and the second bracket 300 can be limited, and the rotor device can maintain the relative position in the detection flow channel 411411. When the stop block 433 is adopted, it is necessary to ensure that the first bracket 200 or the second bracket 300 has elastic deformation capability, so that one of the first bracket 200 or the second bracket 300 can be clamped into the positioning slot 414 or the positioning slot 415.

The working principle of the flow sensor is as follows:

the mounting pipe 410 is communicated with the pipeline to be detected, so that the liquid at the upstream of the pipeline to be detected flows to the downstream of the pipeline to be detected through the water inlet 4111, the detection flow passage 411 and the water outlet 4112, the liquid flowing in the detection flow passage 411 drives the impeller 100 to rotate, and when the impeller 100 rotates, the first magnetic block 131, the second magnetic block 132 and the balancing weight 133 are sequentially close to the first Hall sensor 420.

The first magnetic block 131 is used as a detection reference, the outer end face of the first magnetic block 131 is assumed to be an N pole, the outer end face of the second magnetic block 132 is assumed to be an S pole, when the outer end face of the first magnetic block 131 is close to the first Hall sensor 420, the first Hall sensor 420 outputs a high level, when the outer end face of the second magnetic block 132 is close to the first Hall sensor 420, the first Hall sensor 420 outputs a low level, the impeller 100 continuously rotates, the first Hall sensor 420 can transmit continuous pulse signals to the control IC, the number of the pulse signals is in direct proportion to the water flow, the greater the flow is, the higher the pulse frequency is, and the flow can be known through the output pulse signals.

As shown in fig. 6, in the present embodiment, the impeller 100 is set to rotate counterclockwise to rotate forward; the first magnet 131 and the second magnet 132 are separated by the balancing weight 133, and the time required for the second magnet 132 to rotate to the current position of the first magnet 131 is 1/3 second assuming that the time required for the first magnet 131 (or the impeller 100) to rotate for one circle is 1 second, and the time required for the balancing weight 133 to rotate to the first magnet 131 is 2/3 second, namely, a section of pulse signal can be selected for detection, when the impeller 100 rotates forward, the first hall sensor 420 detects the first magnet 131,1/3 seconds and then detects the second magnet 132,1 seconds, and then detects the first magnet 131 again; if the impeller 100 rotates reversely, the hall sensor detects the first magnetic block 131, but only 2/3 seconds is needed to detect the second magnetic block 132, and the time difference between the first magnetic block 131 and the second magnetic block 132 is detected by the hall sensor 420, so that the forward rotation and the reverse rotation of the impeller 100 can be distinguished.

If the reverse flow of the medium in the flow passage 411 is detected, resulting in the reverse rotation of the impeller 100, the control IC does not record the number of turns of the reverse rotation of the impeller 100, thereby improving the detection accuracy of the present flow sensor.

As shown in fig. 14 to 19, the ball valve comprises a valve body 510, a ball core 530, a valve rod 540, a plug 550, a hall sensor 560 and the rotor device, wherein the valve body 510 is internally provided with a water outlet flow passage 511, a water inlet flow passage 512 and a mounting hole 513, the water outlet flow passage 511 is communicated with the water inlet flow passage 512, and the mounting hole 513 is communicated with the water outlet flow passage 511; the ball core 530 rotates and sets up in the valve body 510, the connecting channel 531 that has in the ball core 530 with inlet channel 512 intercommunication outlet channel 511, valve rod 540 rotates and connects in mounting hole 513, and the inner and ball core 530 joint of valve rod 540, valve rod 540 can drive ball core 530 and rotate along the central axis direction of valve rod 540, the valve body 510 lower extreme is provided with connecting hole 514, end cap 550 joint or threaded connection are in connecting hole 514, end cap 550 and valve rod 540 coaxial arrangement, set up in the end cap 550 and supply the detection groove second 551 of hall sensor second 560 installation, rotor device installs in ball core 530, hall sensor second 560 is close to rotor device. The second hall sensor 560 may be built in or externally connected with a control IC (or a controller), and the control IC receives and processes the pulse signal output by the second hall sensor 560.

Alternatively, a valve cap 520 may be attached to the valve body 510, and the water inlet flow passage 512 may be formed in the valve cap 520. Alternatively, the valve body 510 and the valve cap 520 are integrally formed as a single piece, and the ball core 530 is fitted into the valve body 510 through the large-aperture mounting hole 513.

The connecting flow channel 531 is internally provided with a third positioning groove 5311 and a fourth positioning groove 5312, the third positioning groove 5311 is close to the water inlet flow channel 512, the fourth positioning groove 5312 is close to the water outlet flow channel 511, the first bracket 200 is clamped in the third positioning groove 5311 through the first limiting ring 230, the second bracket 300 is clamped in the fourth positioning groove 5312 through the second limiting ring 330, the impeller 100 is rotatably arranged between the first bracket 200 and the second bracket 300, and a gap second 532 is formed between the outer wing piece 140 and the inner wall of the connecting flow channel 531.

Specifically, the connecting channel 531 is further provided with a second limiting part 570 for limiting the first bracket 200 and the second bracket 300, the second limiting part 570 can be a third clamping spring 571 and a fourth clamping spring 572, the third clamping spring 571 is arranged in the third positioning groove 5311 and limits the first bracket 200, and the fourth clamping spring 572 is arranged in the fourth positioning groove 5312 and limits the second bracket 300. Ring grooves for clamping the third 571 and the fourth 572 clamp can also be formed in the third 5311 and the fourth 5312 positioning grooves.

Referring to fig. 18, as another scheme, one of the third clamping spring 571 and the fourth clamping spring 572 may be replaced by the second block 573, so long as the first bracket 200 and the second bracket 300 can be limited, so that the relative position of the rotor device in the connecting flow channel 531 is ensured. When the second stopper 573 is adopted, it is necessary to ensure that the first bracket 200 or the second bracket 300 has elastic deformation capability, so that one of the first bracket 200 or the second bracket 300 can be clamped into the third positioning slot 5311 and the fourth positioning slot 5312.

Further, a relief hole 533 or a relief groove 534 is formed at the lower end of the ball core 530, the relief hole 533 and the relief groove 534 are both coaxially disposed with the mounting hole 513, the relief hole 533 is communicated with the connecting channel 531, and the inner end of the plug 550 can extend into the relief hole 533 or the relief groove 534 and approach to the first magnetic block 131 (or the second magnetic block 132 and the balancing weight 133) on the impeller 100.

The working principle of the ball valve is as follows:

the ball valve is connected with a water supply pipeline, after the ball core 530 is opened, the connecting flow channel 531 connects the water inlet flow channel 512 with the water outlet flow channel 511, water at the upstream of the water supply pipeline can enter the valve body 510 through the water inlet flow channel 512, and then water flows out from the downstream of the water supply pipeline after passing through the connecting flow channel 531, the impeller 100 and the water outlet flow channel 511.

The water flowing in the connecting flow channel 531 drives the impeller 100 to rotate, and the first magnetic block 131, the second magnetic block 132 and the balancing weight 133 are sequentially close to the second Hall sensor 560; with the first magnetic block 131 as a detection reference, when the outer end face of the first magnetic block 131 is N pole and the outer end face of the second magnetic block 132 is S pole, the first magnetic block 131 is close to the second Hall sensor 560, the first Hall sensor 420 outputs a high level, when the second magnetic block 132 is close to the second Hall sensor 560, the first Hall sensor 420 outputs a low level, the impeller 100 continuously rotates, the second Hall sensor 560 can transmit continuous pulse signals to the control IC, the number of the pulse signals is in direct proportion to the water flow, the larger the water flow is, the higher the pulse frequency is, the water flow can be obtained through the pulse signals, and therefore the flow metering of the water supply pipeline is realized.

The control IC detects the time difference between the first magnetic block 131 and the second magnetic block 132 through the second Hall sensor 560, so that the positive rotation and the negative rotation of the impeller 100 can be judged, and if the reverse rotation of the impeller 100 is caused by the reverse flow of water flow in the connecting flow channel 531, the control IC does not record the number of turns of the reverse rotation of the impeller 100, thereby improving the metering precision of the ball valve.

The ball core 530 can be closed by rotating the valve rod 540 reversely, the water inlet flow channel 512 and the water outlet flow channel 511 are separated by the ball core 530, the ball valve is also in a closed state, and the impeller 100 is in a stopped rotating state; the ball valve can not only measure the fluid in the pipeline, but also control the on-off of the water supply pipeline.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model; those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (17)

1. A rotor apparatus characterized by: the rotor device comprises an impeller (100), a first support (200) and a second support (300), wherein the impeller (100) is positioned between the first support (200) and the second support (300), a rotating shaft (110) is arranged in the axial direction of the impeller (100), two ends of the rotating shaft (110) are respectively connected with the first support (200) and the second support (300) in a rotating mode, a first magnetic block (131), a second magnetic block (132) and a balancing weight (133) are circumferentially arranged on the impeller (100), and magnetic poles of the outer end faces of the first magnetic block (131) and the second magnetic block (132) are opposite.

2. A rotor apparatus as claimed in claim 1, wherein: the first magnetic block (131), the second magnetic block (132) and the balancing weight (133) have equal intervals.

3. A rotor apparatus as claimed in claim 1, wherein: the impeller (100) has curved inner fins (120) thereon.

4. A rotor apparatus as claimed in claim 3, wherein: the outer end of the inner fin (120) is provided with a rectifying tube (130), a plurality of accommodating grooves (134) are formed in the rectifying tube (130) at intervals, and the first magnetic block (131), the second magnetic block (132) and the balancing weight (133) are respectively arranged in the corresponding accommodating grooves (134).

5. The rotor apparatus of claim 4 wherein: the outer wall of the rectifying tube (130) is provided with a plurality of outer fins (140), and the bending direction of the outer fins (140) is the same as that of the inner fins (120).

6. The rotor apparatus as set forth in claim 5 wherein: the outer flap (140) covers the end of the receiving slot (134).

7. The rotor apparatus of claim 4 wherein: the first bracket (200) is provided with a plurality of first through holes (210), the second bracket (300) is provided with a plurality of second through holes (310), and the first through holes (210) and the second through holes (310) are communicated with the rectifying tube (130).

8. A rotor apparatus according to any one of claims 1-7, wherein: a first mounting groove (220) is formed in the first bracket (200), a first top seat (221) is arranged in the first mounting groove (220), and an assembling groove (222) is formed in the end part of the first top seat (221); the bracket II (300) is provided with a mounting groove II (320), a top seat II (321) is arranged in the mounting groove II (320), the end part of the top seat II (321) is provided with an assembly groove II (322), and two ends of the rotating shaft (110) are respectively connected with the assembly groove I (222) and the assembly groove II (322) in a rotating mode.

9. The rotor apparatus as set forth in claim 5 wherein: the first bracket (200) is provided with a first limiting ring (230), and the second bracket (300) is provided with a second limiting ring (330).

10. A rotor apparatus as claimed in claim 9, wherein: the distance from the center of the impeller (100) to the outer wing (140) is smaller than the radius of the first limiting ring (230) and the second limiting ring (330).

11. A flow sensor, characterized by: the flow sensor comprises a mounting pipe (410), a first Hall sensor (420) and a rotor device according to any one of claims 1 to 10, wherein a detection flow passage (411) for fluid to pass through is arranged in the mounting pipe (410), a water inlet (4111) and a water outlet (4112) are respectively arranged at two ends of the detection flow passage (411), a first limiting component (430) for limiting the first bracket (200) and the second bracket (300) is arranged in the detection flow passage (411), and the impeller (100) is rotatably arranged between the first bracket (200) and the second bracket (300); and a first detection groove (412) for installing the first Hall sensor (420) is arranged outside the installation pipe (410), and the first Hall sensor (420) is close to the impeller (100).

12. The flow sensor of claim 11, wherein: the detection flow channel (411) is internally provided with a first positioning groove (414) and a second positioning groove (415), the first positioning groove (414) is used for limiting the first bracket (200), and the second positioning groove (415) is used for limiting the second bracket (300).

13. The flow sensor of claim 12, wherein: the first limiting component (430) comprises a first clamping spring (431) and a second clamping spring (432), the first clamping spring (431) is arranged in the first positioning groove (414) and limits the first bracket (200), and the second clamping spring (432) is arranged in the second positioning groove (415) and limits the second bracket (300).

14. A ball valve, characterized in that: the ball valve comprises a valve body (510), a ball core (530), a valve rod (540), a plug (550), a Hall sensor II (560) and a rotor device according to any one of claims 1 to 10, wherein a water outlet flow channel (511), a water inlet flow channel (512) and a mounting hole (513) are arranged in the valve body (510), the water inlet flow channel (512) is communicated with the water outlet flow channel (511), and the mounting hole (513) is communicated with the water outlet flow channel (511); the ball core (530) rotate set up in valve body (510), have in ball core (530) with intake runner (512) intercommunication go out connecting runner (531) of water runner (511), valve rod (540) rotate connect in mounting hole (513), just the inner of valve rod (540) with ball core (530) are connected, valve body (510) lower extreme is provided with connecting hole (514), end cap (550) detachable connect in connecting hole (514), set up on end cap (550) and supply the detection groove two (551) of hall sensor two (560) installation, rotor device set up in ball core (530), hall sensor two (560) are close to rotor device.

15. The ball valve according to claim 14, wherein: a third positioning groove (5311) and a fourth positioning groove (5312) are formed in the connecting flow channel (531), the first bracket (200) is arranged in the third positioning groove (5311), and the second bracket (300) is arranged in the fourth positioning groove (5312); and a limiting part II (570) for limiting the bracket I (200) and the bracket II (300) is also arranged in the connecting flow channel (531).

16. The ball valve according to claim 15, wherein: the limiting part II (570) comprises a clamp spring III (571) and a clamp spring IV (572), the clamp spring III (571) is arranged in the positioning groove III (5311) and limits the support I (200), and the clamp spring IV (572) is arranged in the positioning groove IV (5312) and limits the support II (300).

17. The ball valve according to claim 14, wherein: the lower end of the ball core (530) is provided with a yielding hole (533) or a yielding groove (534), and the inner end of the plug (550) can extend into the yielding hole (533) or the yielding groove (534) and is close to the impeller (100).