An impeller for fluid metering and a water meter using the impeller

Abstract

The present invention is applicable to the technical field related to water flow measuring instruments, and provides an impeller for fluid metering and a water meter using the impeller. The impeller for fluid metering is arranged in a box body, and a first partition plate and a second partition plate are arranged in the box body. The impeller for fluid metering includes a wheel shaft rotatably installed between the first partition plate and the second partition plate through a shaft member, and a plurality of blades equidistantly arranged on the outer periphery of the wheel shaft along the circumference, the shaft member is arranged on the upper part of the second partition plate, and a through hole smaller than the diameter of the shaft member is opened on the second partition plate. A telescopic mechanism is arranged between the bottom end of the wheel shaft and the bottom wall of the box body, an elastic mechanism is arranged between the top end of the wheel shaft and the bottom of the first partition plate, and a repelling mechanism is installed at the bottom of the second partition plate. After the water flow rushes into the box body, a part of the water is discharged through the outlet pipe, and the other part of the water enters the transmission pipe through the straight pipe and the curved pipe respectively, and then enters the outlet pipe, so the pressure loss of the water meter is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field related to water flow measuring instruments, and in particular relates to an impeller for fluid metering and a water meter using the impeller. Background Art

[0002] A water meter is an instrument for measuring water flow, most of which measure the cumulative flow of water. It is generally divided into two categories: volumetric water meters and velocity water meters. It originated in the UK and has a history of nearly two hundred years. When choosing the specifications of a water meter, you should first estimate the size and range of the flow rate normally used, and then choose the water meter with the specification that is closest to the commonly used flow rate as the first choice.

[0003] Nowadays, there are many high-rise residential buildings, and the requirements for water meter pressure loss are higher than before. The pressure loss of water meters can be referred to as water meter pressure loss. Water meter pressure loss actually refers to the pressure difference between the water inlet and outlet of the water meter when the water meter passes the maximum flow. We call it water pressure loss (ΔP). The relevant national regulations and standards are ΔP<0.1Mpa (this is true for both mechanical water meters and smart water meters). The general water meter pressure test is 1.6Mpa for 15 minutes or 2.0.Mpa for 1 minute. Those that do not meet the standards are considered unqualified products because they cannot withstand the pressure and will burst the water meter. Whether it is a card-inserted water meter or a mechanical water meter, pressure loss exists. It is an indicator of the water meter industry's technical requirements for water meters and plays a major role in the performance of water meters.

[0004] The existing water meters have a large pressure loss, and because there are many high-rise residential buildings nowadays, ideal use effects are often not achieved in actual use. Summary of the invention

[0005] The invention provides an impeller for fluid metering and a water meter using the impeller, aiming to solve the problem of excessive pressure loss of the existing water meter.

[0006] The present invention is implemented in that the fluid metering impeller is arranged in a box body, a first partition plate and a second partition plate are arranged in the box body, and the fluid metering impeller comprises a wheel shaft rotatably mounted between the first partition plate and the second partition plate through a shaft member, and a plurality of blades equidistantly arranged on the outer periphery of the wheel shaft along the circumference;

[0007] The shaft is arranged on the upper part of the second partition plate, and a through hole smaller than the diameter of the shaft is opened on the second partition plate, a telescopic mechanism is arranged between the bottom end of the wheel axle and the bottom wall of the box body, an elastic mechanism is arranged between the top end of the wheel axle and the bottom of the first partition plate, a repulsion mechanism is installed at the bottom of the second partition plate, and a water inlet pipe and a water outlet pipe connected thereto are respectively arranged on the side of the box body.

[0008] Furthermore, the telescopic mechanism includes a rotating shaft fixed on the bottom end of the wheel axle and a sleeve shaft rotatably arranged on the bottom wall of the box body, the central axes of the wheel axle, the rotating shaft and the sleeve shaft coincide, and the rotating shaft is slidably fitted with the sleeve shaft through a limiting structure.

[0009] Furthermore, the limiting structure includes two protrusions arranged on the outer periphery of the rotating shaft and grooves arranged on the inner wall of the sleeve shaft and adapted to the protrusions, and the grooves and the protrusions are parallel to the central axis of the rotating shaft.

[0010] Furthermore, the elastic mechanism includes a limiting plate movably arranged at the bottom of the first partition plate through two groups of elastic parts, a concave hole is opened at the bottom of the limiting plate, and a ball matched with the concave hole is arranged on the top of the wheel axle.

[0011] Furthermore, the elastic member includes a guide tube fixed to the bottom of the first partition plate, a telescopic column slidably arranged in the guide tube, and a spring sleeved on the outer periphery of the guide tube and the telescopic column, and the two ends of the spring are respectively connected to the bottom of the first partition plate and the upper part of the limit plate.

[0012] Furthermore, the repulsion mechanism includes a magnetic ring arranged on the bottom end of the wheel shaft and a magnetic ring arranged on the bottom of the second partition plate, and the magnetic ring is located on the outer periphery of the rotating shaft.

[0013] A water meter, comprising the impeller for fluid metering, and also comprising a gear box arranged on the outer wall of the box body, a dial is arranged on the upper part of the first partition plate, and the gear box is respectively connected to the sleeve shaft and the dial through a transmission belt;

[0014] The water inlet pipe is also provided with an openable and closable control valve, and the control valve is used to switch the conducting and closing states of the water inlet pipe. A connecting pipe group is also provided between the water outlet pipe and the box body.

[0015] Furthermore, the connecting pipe group includes a transmission pipe installed on the water outlet pipe and connected thereto, and a straight pipe and a curved pipe connecting the transmission pipe and the box body;

[0016] The transmission pipe and the bent pipe are both arranged in an "L" shape, the head end of the transmission pipe is connected to the tail end of the bent pipe, and the head end of the bent pipe is communicated with the box body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When in use, water flows into the box body through the water inlet pipe, impacts the blades, and is discharged through the water outlet pipe, causing the wheel axle to rotate. At this time, the repulsion mechanism is triggered to lift the blades and the wheel axle, so that the wheel axle and the blades float in the air. In this process, the telescopic mechanism moves, and the elastic mechanism reserves a certain elastic potential energy. In this way, since the repulsion mechanism lifts the impeller and the wheel axle when the water flows impact the blades, the friction between the wheel axle and the shaft is effectively reduced. In addition, after the water flows into the box body, part of the water is discharged through the water outlet pipe, and the other part of the water enters the transmission pipe through the straight pipe and the curved pipe respectively, and then enters the water outlet pipe, so the pressure loss of the water meter is effectively reduced, and the performance of the water meter is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a structural schematic diagram provided by the present invention.

[0022] Figure 2 It is a structural schematic diagram from another angle provided by the present invention.

[0023] Figure 3 It is a disassembly diagram provided by the present invention.

[0024] Figure 4 The present invention provides Figure 3 Schematic diagram of the structure from another angle.

[0025] Figure 5 The present invention provides Figure 4 A magnified view of the structure at center.

[0026] Figure 6 It is a disassembly diagram of the elastic mechanism provided by the present invention.

[0027] Reference numerals:

[0028] 1-box body; 2-box cover; 3-control valve; 4-water inlet pipe; 5-water outlet pipe; 6-first partition plate; 7-second partition plate; 8-blade; 9-rotating shaft; 10-sleeve shaft; 11-protrusion; 12-groove; 13-straight pipe; 14-magnetic ring; 15-generated magnetic ring; 16-shaft; 17-ball; 18-limiting plate; 19-telescopic column; 20-guide tube; 21-spring; 22-gear box; 23-transmission pipe; 24-bend pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In order to effectively illustrate the embodiments of the present invention, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1-6 The present invention provides an impeller for fluid metering and a water meter using the impeller to solve the problem of excessive pressure loss in existing water meters.

[0032] An impeller for fluid metering, the impeller for fluid metering is arranged in a box body 1, a first partition plate 6 and a second partition plate 7 are arranged in the box body 1, and the impeller for fluid metering comprises a wheel shaft rotatably mounted between the first partition plate 6 and the second partition plate 7 through a shaft 16, and a plurality of blades 8 equidistantly arranged on the outer periphery of the wheel shaft along the circumference;

[0033] The shaft member 16 is arranged on the upper part of the second partition plate 7 , and a through hole smaller than the diameter of the shaft member 16 is opened on the second partition plate 7 , and a telescopic mechanism is arranged between the bottom end of the axle and the bottom wall of the box body 1 .

[0034] The telescopic mechanism includes a rotating shaft 9 fixed on the bottom end of the wheel shaft and a sleeve shaft 10 rotatably arranged on the bottom wall of the box body 1. The central axes of the wheel shaft, the rotating shaft 9 and the sleeve shaft 10 coincide with each other, and the rotating shaft 9 is slidably fitted with the sleeve shaft 10 through a limiting structure.

[0035] The limiting structure includes two protrusions 11 arranged on the outer periphery of the rotating shaft 9 and a groove 12 arranged on the inner wall of the sleeve shaft 10 and adapted to the protrusions 11 . The groove 12 and the protrusions 11 are parallel to the central axis of the rotating shaft 9 .

[0036] An elastic mechanism is provided between the top of the wheel axle and the bottom of the first partition plate 6, a repelling mechanism is installed at the bottom of the second partition plate 7, and a water inlet pipe 4 and a water outlet pipe 5 connected thereto are provided on the side of the box body 1, respectively.

[0037] The elastic mechanism includes a limiting plate 18 movably arranged at the bottom of the first partition plate 6 through two groups of elastic members. A concave hole is opened at the bottom of the limiting plate 18, and a ball 17 adapted to the concave hole is arranged on the top end of the wheel axle.

[0038] The elastic member includes a guide tube 20 fixed to the bottom of the first partition plate 6, a telescopic column 19 slidably arranged in the guide tube 20, and a spring 21 sleeved on the outer periphery of the guide tube 20 and the telescopic column 19, and the two ends of the spring 21 are respectively connected to the bottom of the first partition plate 6 and the upper part of the limit plate 18.

[0039] The repulsion mechanism includes a magnetic ring 14 arranged on the bottom end of the wheel shaft and a magnetic ring 15 arranged on the bottom of the second partition plate 7 . The magnetic ring 14 is located on the outer periphery of the rotating shaft 9 .

[0040] In detail, a power supply device connected to the magnetic ring 15 is also provided at the bottom of the second partition plate 7. A sensor is also provided on the power supply device. When the sensor senses that water flows into the box body 1, the power supply device supplies power to the magnetic ring 15.

[0041] When in use, water flows into the box body 1 through the water inlet pipe 4, and the magnetic ring 15 is in a powered state, thereby generating magnetism. According to the principle of like charges repel each other, the magnetic ring 14 lifts the wheel shaft and the blades 8, and accordingly, the rotating shaft 9 slides upward in the sleeve shaft 10;

[0042] At the same time, the ball 17 enters into the concave hole at the bottom of the limit plate 18 and abuts against it, the spring 21 is compressed, and the telescopic column 19 moves toward the guide tube 20, which effectively protects the spring 21 and prevents it from bending.

[0043] When in use, water flows into the box body 1 through the water inlet pipe 4, impacts the blades 8, and is discharged through the water outlet pipe 5, causing the wheel shaft to rotate. At this time, the repulsion mechanism is triggered to lift the blades 8 and the wheel shaft, so that the wheel shaft and the blades 8 float in the air. In this process, the telescopic mechanism moves, and the elastic mechanism reserves a certain amount of elastic potential energy.

[0044] In this way, when water flows impact the blades 8, the repulsion mechanism lifts up the impeller 8 and the axle, thereby effectively reducing the friction between the bottom of the axle and the bottom wall of the shaft 16, thereby significantly improving the sensitivity of the impeller.

[0045] Specifically, the box body 1 is cylindrical, and the first partition plate 6 and the second partition plate 7 divide the box body 1 into three sections.

[0046] A water meter, comprising the impeller for fluid metering, and also comprising a gear box 22 arranged on the outer wall of the box body 1, a dial is arranged on the upper part of the first partition plate 6, and the gear box 22 is connected to the sleeve shaft 10 and the dial respectively through a transmission belt;

[0047] The water inlet pipe 4 is also provided with an openable and closable control valve 3 , and the control valve 3 is used to switch the conducting and closing states of the water inlet pipe 4 . A connecting pipe group is also provided between the water outlet pipe 5 and the box body 1 .

[0048] The connecting pipe group includes a transmission pipe 23 installed on the water outlet pipe 5 and connected thereto, and a straight pipe 13 and a curved pipe 24 connecting the transmission pipe 23 and the box body 1;

[0049] The transmission pipe 23 and the curved pipe 24 are both arranged in an “L” shape, the head end of the transmission pipe 23 is connected to the tail end of the curved pipe 24 , and the head end of the curved pipe 24 is communicated with the box body 1 .

[0050] After the water flows into the box body 1, part of the water is discharged through the water outlet pipe 5, and the other part of the water enters the transmission pipe 23 through the straight pipe 13 and the curved pipe 24 respectively, and then enters the water outlet pipe 5. In this way, the pressure loss (i.e., pressure loss) of the water meter is effectively reduced, and the performance of the water meter is effectively improved, making the water meter suitable for popularization and use.

[0051] It should be noted that the pressure loss of ordinary mechanical water meters is mainly caused by: when water enters the water meter at a certain flow rate, it is blocked by various components inside the water meter, and the water flow undergoes various changes, which are currently uncontrollable. After the water has undergone changes inside the water meter, it has changed when it flows out of the water meter outlet and the water inlet, because a certain amount of loss is generated in this process, resulting in a pressure difference. Of course, the smaller the pressure loss, the better, which is related to the stability of the water meter;

[0052] In addition, the gear box 22 described above is provided with a reduction gear set;

[0053] The working principle of the water meter is that water flows tangentially from the water inlet of the meter case to impact the impeller to make it rotate, and then the number of revolutions of the impeller is continuously recorded through the gear reduction mechanism, thereby recording the cumulative flow through the water meter;

[0054] Therefore, the reduction gear set in the gear box 22 reduces the rotation of the impeller 8, and then drives the pointer on the dial to rotate, recording the corresponding water consumption.

[0055] Taking the embodiment in which all the features recorded in the present application are combined as an example, when the water meter is in use, water flows into the box body 1 through the water inlet pipe 4, and the magnetic ring 15 is in a powered state, thereby generating magnetism. According to the principle of like charges repel each other, the magnetic ring 14 lifts the wheel shaft and the blade 8, and accordingly, the rotating shaft 9 slides upward in the sleeve shaft 10. At the same time, the ball 17 enters the concave hole at the bottom of the limit plate 18 and abuts against it, the spring 21 is compressed, and the telescopic column 19 moves toward the guide tube 20, which effectively acts on the spring 21. The protective function is to prevent it from bending. In this way, when water flows into the blades 8, the repulsion mechanism lifts up the impeller 8 and the axle, so the friction between the bottom of the axle and the bottom wall of the shaft 16 is effectively reduced. After the water flows into the box body 1, part of the water is discharged through the outlet pipe 5, and the other part of the water enters the transmission pipe 23 through the straight pipe 13 and the curved pipe 24 respectively, and then enters the outlet pipe 5. In this way, the pressure loss of the water meter is effectively reduced, and the performance of the water meter is effectively improved.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impeller for fluid metering, characterized in that: The fluid metering impeller is arranged in a box body (1), a first partition plate (6) and a second partition plate (7) are arranged in the box body (1), and the fluid metering impeller comprises a wheel shaft rotatably mounted between the first partition plate (6) and the second partition plate (7) via a shaft (16), and a plurality of blades (8) equidistantly arranged on the outer periphery of the wheel shaft along a circumference; The shaft member (16) is arranged on the upper part of the second partition plate (7), and a through hole smaller than the diameter of the shaft member (16) is opened on the second partition plate (7), and a telescopic mechanism is arranged between the bottom end of the wheel axle and the bottom wall of the box body (1); An elastic mechanism is provided between the top end of the wheel axle and the bottom of the first partition plate (6), and a repelling mechanism is installed at the bottom of the second partition plate (7); A water inlet pipe (4) and a water outlet pipe (5) are respectively provided on the side of the box body (1) and are in communication with the box body; The telescopic mechanism comprises a rotating shaft (9) fixed on the bottom end of the wheel shaft and a sleeve shaft (10) rotatably arranged on the bottom wall of the box body (1); the central axes of the wheel shaft, the rotating shaft (9) and the sleeve shaft (10) coincide with each other, and the rotating shaft (9) is slidably fitted with the sleeve shaft (10) via a limiting structure; The limiting structure comprises two protrusions (11) arranged on the outer periphery of the rotating shaft (9) and a groove (12) arranged on the inner wall of the sleeve shaft (10) and adapted to the protrusions (11), wherein the groove (12) and the protrusions (11) are parallel to the central axis of the rotating shaft (9); The elastic mechanism comprises a limiting plate (18) movably arranged at the bottom of the first partition plate (6) through two groups of elastic parts, a concave hole is opened at the bottom of the limiting plate (18), and a ball (17) adapted to the concave hole is arranged on the top end of the wheel axle.

2. The fluid metering impeller according to claim 1, characterized in that: The elastic member includes a guide tube (20) fixed to the bottom of the first partition plate (6), a telescopic column (19) slidably arranged in the guide tube (20), and a spring (21) sleeved on the outer periphery of the guide tube (20) and the telescopic column (19), and the two ends of the spring (21) are respectively connected to the bottom of the first partition plate (6) and the upper part of the limit plate (18).

3. The fluid metering impeller according to claim 2, characterized in that: The repulsion mechanism comprises a magnetic ring (14) arranged on the bottom end of the wheel shaft and a magnetic ring (15) arranged on the bottom of the second partition plate (7), and the magnetic ring (14) is located on the outer periphery of the rotating shaft (9).

4. A water meter using the fluid metering impeller according to any one of claims 1 to 3, characterized in that: It comprises a gear box (22) arranged on the outer wall of the box body (1), a dial is arranged on the upper part of the first partition plate (6), and the gear box (22) is connected to the sleeve shaft (10) and the dial respectively through a transmission belt; A control valve (3) that can be opened and closed is also installed on the water inlet pipe (4), and the control valve (3) is used to switch the water inlet pipe (4) between an open and closed state; A connecting pipe group is also provided between the water outlet pipe (5) and the box body (1).

5. The water meter according to claim 4, characterized in that: The connecting pipe group comprises a transmission pipe (23) installed on the water outlet pipe (5) and connected thereto, and a straight pipe (13) and a curved pipe (24) connecting the transmission pipe (23) and the box body (1); The transmission pipe (23) and the curved pipe (24) are both arranged in an "L" shape; the head end of the transmission pipe (23) is connected to the tail end of the curved pipe (24); and the head end of the curved pipe (24) is in communication with the box body (1).

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