CN216869651U - Flow meter and toilet - Google Patents

Abstract

The utility model relates to a flowmeter and a closestool. The flowmeter comprises a body and a rotating part, wherein a cavity is arranged in the body, the body is further provided with a water inlet and a water outlet which are communicated with each other, and the caliber of the water inlet is not larger than that of the water outlet. And in the vertical direction, the position of the water inlet is not higher than that of the water outlet. The rotating part is arranged in the cavity and is rotationally connected with the body, and fluid entering the cavity from the water inlet can push the rotating part to rotate relative to the body. Above-mentioned flowmeter, the minimum start-up flow of rotating the piece is little, can promote the accuracy of flowmeter when low flow measurement.

Description

Flow meter and toilet

Technical Field

The utility model relates to the technical field of flow measurement, in particular to a flowmeter and a closestool.

Background

A flow meter is typically provided in the toilet to detect the real-time flow rate of the water flow for monitoring the toilet water flow. The existing flowmeter is generally provided with a centrifugal impeller in a cavity, water flow entering the flowmeter drives the centrifugal impeller to rotate, and the flowmeter acquires the rotation frequency of the centrifugal impeller through a sensor, so that the flow of the water flow is calculated. However, the minimum start-up flow rate of the centrifugal impeller in the current flow meter is high, and the measurement accuracy is low at low flow rates.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a flow meter and a toilet in order to solve the problems of the conventional flow meter that the minimum start flow rate of the centrifugal impeller is high and the measurement accuracy is low at a low flow rate.

A flow meter, comprising:

the water inlet and the water outlet are communicated with the cavity, the caliber of the water inlet is not larger than that of the water outlet, and the position of the water inlet is not higher than that of the water outlet in the vertical direction; and

the rotating piece is arranged in the cavity and is in rotating connection with the body, and fluid entering the cavity from the water inlet can push the rotating piece to rotate relative to the body.

In one embodiment, the aperture of the water inlet is smaller than the aperture of the water outlet.

In one embodiment, the position of the water inlet is lower than the position of the water outlet in the vertical direction.

In one embodiment, the rotating part comprises a rotating shaft and a rotating blade which are connected with each other, the rotating shaft is rotatably connected with the body, and the axes of the water inlet and the water outlet are respectively positioned on two sides of the rotating shaft.

In one embodiment, the axis of the water inlet is tangential to the outer circumference of the rotating member.

In one embodiment, the water inlet and the water outlet are oriented in the same direction; alternatively, the first and second electrodes may be,

the axes of the water inlet and the water outlet are vertical to each other; alternatively, the first and second electrodes may be,

the rotating part comprises a rotating shaft and a rotating blade which are connected with each other, the rotating shaft is rotatably connected with the body, and the axis of the water outlet is parallel to the rotating shaft.

In one embodiment, the rotating part further comprises a sensor, the sensor is arranged in the body and close to the cavity, and the sensor is used for sensing the rotating speed of the rotating part.

In one embodiment, the rotating part comprises a rotating shaft and a rotating blade which are connected with each other, the rotating shaft is rotatably connected with the body,

the sensor comprises a Hall element, at least part of the rotating blade is magnetic, or the sensor comprises a light sensing element, and at least part of the rotating blade is made of opaque materials.

In one of them embodiment, the body is including dismantling main part and the apron of connection, the main part with the apron encloses to establish and forms the cavity, the water inlet with the delivery port is all located on the main part, it includes interconnect's pivot and commentaries on classics leaf to rotate the piece, the both ends of pivot respectively with the main part with the apron rotates and is connected.

A toilet comprising a housing and a flow meter as in any preceding embodiment, the flow meter being provided in the housing.

Above-mentioned flowmeter, the bore of water inlet is not more than the bore of delivery port to make the fluid velocity of flow of water inlet can not be slower than the fluid velocity of flow of delivery port, and then make the fluid that gets into the cavity from the water inlet can effectively promote to rotate the piece and rotate, promote the conversion that fluid kinetic energy turned into and rotates the piece kinetic energy. Meanwhile, the position of the water inlet is not higher than that of the water outlet, fluid entering the cavity from the water inlet cannot easily flow out of the water outlet directly under the action of gravity, loss of kinetic energy of the fluid is reduced, in other words, the fluid flowing into the cavity from the water inlet needs to flow out of the water outlet through the rotating piece, and therefore the conversion rate of converting the kinetic energy of the fluid into the kinetic energy of the rotating piece can be improved. Therefore, the flowmeter can improve the conversion rate of converting the fluid kinetic energy into the kinetic energy of the rotating part, so that the fluid can effectively push the rotating part to rotate, and the measurement accuracy of the flowmeter is improved. Meanwhile, due to the improvement of the kinetic energy conversion rate, when the flow rate is low, the fluid can still push the rotating piece to rotate, so that the minimum starting flow rate of the rotating piece is reduced, and the accuracy of the flowmeter when the flow rate is low is improved.

Drawings

FIG. 1 is an isometric illustration of a flow meter in some embodiments;

FIG. 2 is a schematic view of another angle of the flow meter in some embodiments;

FIG. 3 is a schematic cross-sectional view of the flowmeter of FIG. 2 taken along the line A-A;

FIG. 4 is a schematic view of a further angle of the flow meter in some embodiments;

FIG. 5 is a schematic cross-sectional view of the flowmeter shown in FIG. 4 taken along the direction B-B;

FIG. 6 is a schematic view of a water inlet side of a flow meter in some embodiments;

FIG. 7 is a schematic diagram of a flow meter in further embodiments;

FIG. 8 is a schematic view of a flow meter with cover plates omitted in other embodiments.

10, a flow meter; 110. a body; 1110. a main body; 1111. an accommodating groove; 1120. a cover plate; 1130. a cavity; 1140. a water inlet pipe; 1141. a water inlet; 1150. a water outlet pipeline; 1151. a water outlet; 120. a rotating member; 1210. a rotating shaft; 1220. rotating the leaves; 130. a sensor; 140. and (5) sealing rings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, 2, and 3, fig. 1 is an isometric illustration of a flow meter 10 in some embodiments, fig. 2 is a structural illustration of another angle of the flow meter 10 in some embodiments, and fig. 3 is a cross-sectional illustration of the flow meter 10 shown in fig. 2 taken along direction a-a. The flow meter 10 provided herein can be used to measure the flow rate of a water flow or other fluid. In some embodiments, the flowmeter 10 includes a body 110, a rotor 120, and a sensor 130, wherein the body 110 has a cavity 1130, the body 110 further has a water inlet 1141 and a water outlet 1151 communicating with the cavity 1130, and the rotor 120 is disposed in the cavity 1130 and rotatably connected to the body 110. Fluid enters the cavity 1130 through the inlet 1141 and flows out of the cavity 1130 through the outlet 1151 after the rotating member 120 is pushed to rotate. The sensor 130 can sense the rotational frequency of the rotation member 120, thereby calculating the flow rate of the fluid.

Further, in some embodiments, the aperture of the water inlet 1141 is not larger than the aperture of the water outlet 1151, for example, the aperture of the water inlet 1141 is smaller than or equal to the aperture of the water outlet 1151. Also, the position of the water inlet 1141 is not higher than the position of the water outlet 1151 in the vertical direction, for example, the position of the water inlet 1141 is flush with the position of the water outlet 1151 or lower than the position of the water outlet 1151 in the vertical direction.

It can be understood that, if the inlet volume of the water inlet 1141 is equal to the outlet volume of the water outlet 1151 in the same time, the smaller the aperture of the water inlet 1141 relative to the aperture of the water outlet 1151, the faster the flow rate of the fluid at the water inlet 1141 relative to the flow rate of the fluid at the water outlet 1151. Therefore, the aperture of the water inlet 1141 is not larger than the aperture of the water outlet 1151, so that the flow rate of the fluid at the water inlet 1141 is not slower than the flow rate of the fluid at the water outlet 1151, and the fluid entering the cavity 1130 from the water inlet 1141 has enough kinetic energy to drive the rotating member 120 to rotate, thereby improving the conversion rate of the kinetic energy of the fluid to the kinetic energy of the rotating member 120. In addition, in the vertical direction, the position of the water inlet 1141 is not higher than the position of the water outlet 1151, and the fluid entering the cavity 1130 from the water inlet 1141 is not easy to directly flow out from the water outlet 1151 due to the action of gravity, so that the loss of kinetic energy is caused, in other words, the fluid flowing into the cavity 1130 from the water inlet 1141 needs to flow out from the water outlet 1151 through the rotating member 120, so that the fluid can effectively push the rotating member 120 to rotate, and the conversion rate of converting the fluid kinetic energy into the kinetic energy of the rotating member 120 can be improved.

It should be noted that, in the present application, the vertical direction is described, and should be understood as the vertical direction of the flowmeter 10 in the measurement state. In other words, describing the relative positional relationship of the water inlet 1141 and the water outlet 1151 in the vertical direction, it is only understood that the relative positional relationship of the water inlet 1141 and the water outlet 1151 in the measurement state of the flow meter 10 is limited, and the relative positional relationship of the water inlet 1141 and the water outlet 1151 in the production or transportation state of the flow meter 10 is not limited. The direction indicated by the dotted arrow C in fig. 3 is the vertical direction. In the measuring state of the flowmeter 10, the fluid enters from the water inlet 1141, and the rotating member 120 is pushed to rotate and then flows out from the water outlet 1151. At this time, the position of the water inlet 1141 is not higher than the position of the water outlet 1151, so that the fluid entering the cavity 1130 from the water inlet 1141 is not easy to flow out from the water outlet 1151 directly due to the gravity.

The flowmeter 10 can improve the conversion rate of converting the kinetic energy of the fluid into the kinetic energy of the rotating part 120, so that the fluid can effectively push the rotating part 120 to rotate, thereby improving the measurement accuracy of the flowmeter 10. Meanwhile, due to the improvement of the kinetic energy conversion rate, when the flow rate is low, the fluid can still push the rotating part 120 to rotate, so that the minimum starting flow rate of the rotating part 120 is reduced, the accuracy of the flowmeter 10 when the flow rate is low is improved, and the measuring range of the flowmeter 10 can be enlarged.

It should be noted that the minimum actuation flow rate of the rotating member 120 is understood to be the flow rate of the fluid entering the cavity 1130 from the water inlet 1141 when the fluid is just able to rotate the rotating member 120. A low flow measurement may be understood as a condition where the flow of fluid from inlet 1141 into cavity 1130 is less than 200 ml/min. Traditional flowmeter, because the kinetic energy conversion is low, when low flow measurement, fluid kinetic energy is not enough, is difficult to promote and rotates the piece and rotate, can't promote even and rotate the piece and rotate, leads to the minimum start-up flow height that rotates the piece, and measurement accuracy is low when low flow. And the flowmeter 10 that this application provided, because the promotion of kinetic energy conversion rate, the minimum starting flow of rotating piece 120 is low, and fluid still can promote rotating piece 120 to rotate during low flow measurement to can be according to the rotational frequency measurement fluidic flow of rotating piece 120, promote the measurement accuracy of flowmeter 10 when low flow measurement.

Referring also to fig. 1, 4 and 5, fig. 4 is a schematic view of a further angle of the flow meter 10 in some embodiments, and fig. 5 is a schematic view of a cross-section of the flow meter 10 shown in fig. 4 taken along the direction B-B. In some embodiments, the body 110 includes a main body 1110 and a cover 1120 detachably connected to each other, the cover 1120 covers the open side of the main body 1110 and encloses with the main body 1110 to form a cavity 1130, and the water inlet 1141 and the water outlet 1151 are both disposed on the main body 1110. The rotation member 120 includes a rotation shaft 1210 and a plurality of rotation vanes 1220 coupled to the rotation shaft 1210, and both ends of the rotation shaft 1210 respectively rotate to couple opposite surfaces of the main body 1110 and the cover 1120. Fluid entering the cavity 1130 from the inlet 1141 pushes the rotary blade 1220, thereby rotating the rotary member 120 along the rotary shaft 1210. The removable cover 1120 is provided on the main body 1110 to facilitate maintenance of the cavity 1130 and the rotational member 120 located in the cavity 1130.

In some embodiments, the body 1110 further has a receiving groove 1111 for receiving the sensor 130, and the receiving groove 1111 is disposed adjacent to the cavity 1130, for example, in the axial direction of the water inlet 1141, the cavity 1130, and the receiving groove 1111 are arranged in sequence. In some embodiments, the flow meter 10 further comprises a seal ring 140 disposed between the body 1110 and the cover 1120, and the seal ring 140 can be disposed around the cavity 1130 to seal the cavity 1130 and prevent fluid in the cavity 1130 from leaking between the body 1110 and the cover 1120.

Referring to fig. 3 and 6, fig. 6 is a schematic view of the water inlet 1141 side of the flow meter 10 in some embodiments. In some embodiments, the aperture of the water inlet 1141 is smaller than the aperture of the water outlet 1151, so that the flow rate of the fluid at the water inlet 1141 is greater than the flow rate of the fluid at the water outlet 1151, thereby further improving the conversion rate of the kinetic energy of the fluid into the kinetic energy of the rotating element 120, making the rotating element 120 more sensitive, increasing the minimum start flow rate of the rotating element 120, and improving the measurement accuracy of the flow meter 10.

In some embodiments, the position of the water inlet 1141 is lower than the position of the water outlet 1151 in the vertical direction. So set up, the fluid that gets into cavity 1130 from water inlet 1141 all need to flow to delivery port 1151 through rotating 120 side, also is favorable to further promoting the conversion that fluid kinetic energy turned into rotating 120 kinetic energy for it is more sensitive to rotate 120, thereby increases the minimum start-up flow of rotating 120 and promotes the measurement accuracy of flowmeter 10.

Further, in some embodiments, the axes of the water inlet 1141 and the water outlet 1151 are located on two sides of the rotating shaft 1210, in other words, the rotating member 120 is disposed between the water inlet 1141 and the water outlet 1151. Thus, fluid entering the cavity 1130 from the inlet 1141 needs to flow to the outlet 1151 through the rotating member 120, which is beneficial to increasing the conversion rate of the kinetic energy of the fluid to the kinetic energy of the rotating member 120. Further, in some embodiments, the water inlet 1141 and the water outlet 1151 are disposed on the same side of the body 110, and the water inlet 1141 and the water outlet 1151 are oriented in the same direction, in other words, the water inlet 1141 is opposite to the water outlet 1151. For example, in some embodiments, the axis of the water inlet 1141 is parallel to the axis of the water outlet 1151. Thus, the fluid entering the cavity 1130 from the water inlet 1141 needs to flow out of the water outlet 1151 after surrounding a circle along the circumferential direction of the rotating member 120, so that the kinetic energy of the fluid can be fully utilized, and the sensitivity of the rotating member 120 can be improved. Meanwhile, the water inlet 1141 and the water outlet 1151 are arranged on the same side of the main body 1110, and are in butt joint with other elements on the same side of the main body 1110, so that the structure of the flowmeter 10 is more compact, and the space utilization rate is improved.

In some embodiments, the axis of the water inlet 1141 is tangent to the outer circumference of the rotating member 120. If the plurality of rotating vanes 1220 all extend along the radial direction of the rotating shaft 1210 and the size of each rotating vane 1220 in the radial direction of the rotating shaft 1210 is equal, in the cross-sectional view shown in fig. 3, the end points of the plurality of rotating vanes 1220 far from the rotating shaft 1210 are located on the same circle, which can be understood as the outer circumference of the rotating member 120. So set up, the part that the pivot 1210 was kept away from to the fluid that gets into cavity 1130 from water inlet 1141 can direct impact commentaries on classics leaf 1220 for fluidic kinetic energy can the full action on rotating the piece 120, thereby effectively drives the pivot 1210 and rotates, promotes the conversion rate that fluid kinetic energy turned into and rotates the piece 120 kinetic energy. Of course, in some embodiments, the axis of the water outlet 1151 may be tangential to the outer circumference of the rotating member 120, so that when the fluid flows in the cavity 1130 to a position adjacent to the water outlet 1151, the fluid can flow out of the water outlet 1151 at a high speed, so that the fluid in the cavity 1130 flows more smoothly, and the sensitivity of the rotating member 120 is higher.

It should be noted that the arrangement of the water inlet 1141 and the water outlet 1151 is not limited. Referring to fig. 1 and 3, in some embodiments, the body 110 further includes an inlet pipe 1140 and an outlet pipe 1150 fixedly connected to the main body 1110, the inlet pipe 1140 and the outlet pipe 1150 are hollow pipe structures with openings at two ends, the openings of the inlet pipe 1140 and the outlet pipe 1150 near the end of the main body 1110 are communicated with the cavity 1130, the opening of the inlet pipe 1140 at the end far from the main body 1110 forms an inlet port 1141, and the opening of the outlet pipe 1150 at the end far from the main body 1110 forms an outlet port 1151. In this embodiment, the axis of the water inlet pipe 1140 is the axis of the water inlet 1141, and the axis of the water outlet pipe 1150 is the axis of the water outlet 1151. The provision of the inlet conduit 1140 and the outlet conduit 1150 facilitates the interfacing of the flow meter 10 with other components, such as the inlet conduit 1140 interfacing with a tap water conduit, such that the flow meter 10 is capable of measuring the flow of fluid from the tap water conduit.

Of course, the relative positions of the water inlet 1141 and the water outlet 1151 are not limited to the above description, and the position of the water inlet 1141 is not higher than the position of the water outlet 1151 in the vertical direction, so that the conversion rate of converting the kinetic energy of the fluid into the kinetic energy of the rotating member 120 can be improved. For example, referring to fig. 7 and 8, fig. 7 is a schematic diagram of a structure of flowmeter 10 in another embodiment, and fig. 8 is a schematic diagram of flowmeter 10 in another embodiment without cover 1120. In other embodiments, water inlet 1141 and water outlet 1151 are oriented differently, in other words, the axis of water inlet 1141 is at an angle to the axis of water outlet 1151. Specifically, in some embodiments, the axis of the water inlet 1141 is perpendicular to the axis of the water outlet 1151. In some embodiments, the axis of the outlet 1151 is parallel to the axis 1210. In this embodiment, the axis of the water inlet 1141 and the axis of the water outlet 1151 are still disposed on both sides of the rotating shaft 1210, so that the fluid entering the cavity 1130 from the water inlet 1141 can sufficiently push the rotating member 120 to rotate in the cavity 1130 and be discharged from the water outlet 1151.

The arrangement of the rotating member 120 is not limited, for example, the rotating member 120 may be a centrifugal impeller, and the number of the rotating blades 1220 of the rotating member 120 includes, but is not limited to, three, four, five or six. In the embodiment shown in fig. 3, the rotating member 120 includes four rotating blades 1220, and the four rotating blades 1220 are uniformly distributed along the circumference of the rotating shaft 1210. The arrangement of the sensor 130 is also not limited as long as the sensor 130 can be adapted to the rotation member 120 so as to obtain the rotation frequency of the rotation member 120. For example, in some embodiments, at least a portion of the rotating blade 1220 is magnetic, the sensor 130 is a hall element, and the sensor 130 obtains the rotating frequency of the rotating member 120 through the change of the magnetic field generated by the rotation of the rotating member 120. In other embodiments, at least a portion of the rotating blade 1220 is made of opaque material, the sensor 130 is a light sensing element, and the sensor 130 obtains the rotating frequency of the rotating member 120 according to the light variation generated by the rotation of the rotating member 120.

The present application further provides a toilet (not shown) comprising a flow meter 10 according to any of the embodiments described above, the toilet further comprising a housing, the flow meter 10 being provided in the housing. The application of the flow meter 10 to the toilet bowl is not limited, for example, the casing may be the body 110 of the toilet bowl, the flow meter 10 is disposed in the casing, and the flow meter 10 is used for measuring the flow rate of the water flow entering the toilet bowl in the toilet bowl. Of course, the flow meter 10 can also be used to measure the flow rate of fluid in other elements of the toilet, for example, in some embodiments, the toilet further includes a spray gun for cleaning and a heater for heating water, and the spray gun is used to spray a water flow heated by the heater so as to clean part of the user. The flowmeter 10 is applied to a heater, and the casing may be a casing of the heater, a water inlet 1141 of the flowmeter 10 is in butt joint with a tap water pipeline, and a water outlet 1151 is in butt joint with a water inlet channel of the heater, and is used for measuring the flow rate of water flowing into the heater.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A flow meter, comprising:

the water inlet and the water outlet are communicated with each other, the caliber of the water inlet is not larger than that of the water outlet, and the position of the water inlet is not higher than that of the water outlet in the vertical direction; and

the rotating piece is arranged in the cavity and is in rotating connection with the body, and fluid entering the cavity from the water inlet can push the rotating piece to rotate relative to the body.

2. The flowmeter of claim 1, wherein the bore of said water inlet is smaller than the bore of said water outlet.

3. The flowmeter of claim 1, wherein the position of said water inlet is lower than the position of said water outlet in a vertical direction.

4. The flowmeter of claim 3, wherein said rotatable member comprises a shaft and a blade, said shaft being rotatably connected to said body, and wherein said water inlet and said water outlet have respective axes on opposite sides of said shaft.

5. The flowmeter of claim 1 wherein the axis of said water inlet is tangential to the outer circumference of said rotatable member.

6. The flowmeter of claim 1 wherein said water inlet is oriented in the same direction as said water outlet; alternatively, the first and second electrodes may be,

the axes of the water inlet and the water outlet are vertical to each other; alternatively, the first and second electrodes may be,

the rotating part comprises a rotating shaft and a rotating blade which are connected with each other, the rotating shaft is rotatably connected with the body, and the axis of the water outlet is parallel to the rotating shaft.

7. The flowmeter of any of claims 1-6, further comprising a sensor disposed within said body and adjacent to said chamber, said sensor configured to sense a rotational speed of said rotating member.

8. The flowmeter of claim 7 wherein said rotor comprises a shaft and a plurality of blades connected to said shaft, said shaft being rotatably connected to said body,

the sensor comprises a Hall element, at least part of the rotating blade is magnetic, or the sensor comprises an optical sensing element, and at least part of the rotating blade is made of opaque materials.

9. The flowmeter of any one of claims 1-6, wherein the body comprises a main body and a cover plate that are detachably connected, the main body and the cover plate enclose the cavity, the water inlet and the water outlet are both arranged on the main body, the rotating member comprises a rotating shaft and a rotating blade that are connected with each other, and two ends of the rotating shaft are rotatably connected with the main body and the cover plate respectively.

10. A toilet bowl comprising a housing and a flow meter according to any one of claims 1 to 9, the flow meter being provided in the housing.

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