CN205642479U - Magnetic induction pulse water gauge - Google Patents

Abstract

The utility model relates to a magnetic induction pulse water meter, which comprises a water meter body and a cavity. The cavity is provided with an inner shell base. There is a water outlet, an impeller base is provided in the lower chamber, the impeller base is rotatably connected to the impeller, the impeller shaft is fixed on the impeller, and an avoidance hole is provided on the base of the inner shell, and the upper end of the impeller shaft passes through the avoidance hole and is exposed on the upper surface. In the cavity, there is a magnetic steel on the upper end of the impeller shaft. The water meter also includes a high magnetic permeability stator piece, a wire frame iron core and a circuit board. A magnetic pole cavity is arranged on the high magnetic permeability stator piece. A coil is wound, and a circuit board is connected to the coil. The water meter drives the magnetic steel to rotate through the impeller shaft to generate a pulse signal on the coil, and converts the pulse signal into water flow information, so that the measurement accuracy is high and the measurement is accurate when the water flow is small, and the leakage loss is small. In addition, the water meter also has manufacturing costs. Low cost, high precision, easy installation and so on.

Description

Magnetic induction pulse water meter

technical field

The utility model relates to a water meter, in particular to a magnetic induction pulse water meter.

Background technique

More than 90% of the water meters used in daily life are mechanical meters. The traditional water meters have the following defects: 1. The measurement accuracy is limited. When the water flow is small, the leakage loss is large and it is difficult to measure accurately; 2. The measurement accuracy is low and the manufacturing cost is high; 3 .Using manual meter reading increases management costs and makes monitoring difficult when faults occur.

Utility model content

The purpose of this utility model is to overcome the above shortcomings and provide a magnetic induction pulse water meter. The water meter drives the magnetic steel to rotate through the impeller shaft to generate a pulse signal on the coil, and converts the pulse signal into water flow information, so that the measurement accuracy is high and in When the water flow is small, the measurement is accurate and the leakage loss is small. In addition, the water meter also has the advantages of low manufacturing cost, high precision, and convenient installation.

The utility model is realized in the following way: a magnetic induction pulse water meter includes a water meter body, and a cavity is arranged in the water meter body, and is characterized in that: an inner shell base is arranged in the middle of the cavity, and the inner shell base separates the cavity It is an upper cavity above it and a lower cavity below it, the lower part of the lower cavity is provided with a water inlet, the upper part of the lower cavity is provided with a water outlet, and the lower cavity is provided with an impeller base, so The base of the impeller is rotatably connected with an impeller, the impeller is fixed with an impeller shaft, the base of the inner shell is provided with a avoidance hole for avoiding the impeller shaft, and the upper end of the impeller shaft is exposed in the upper cavity after passing through the avoidance hole In the body, the upper end of the impeller shaft is coaxially fixed with a magnetic steel, and the magnetic induction pulse water meter also includes a high magnetic permeability stator piece, a wire frame iron core and a circuit board located in the upper cavity and fixed on the base of the inner shell. A magnetic pole cavity is provided on the high-permeability stator piece, and the magnetic steel is located in the magnetic pole cavity. The magnetic steel is provided with an even number of equally divided magnetic regions and the magnetic poles of two adjacent magnetic regions are opposite. The wire frame iron A coil is wound on the core, and the circuit board is connected with the coil to acquire the pulse signal on the coil and convert the pulse signal into fluid flow information.

In order to make the service life of the water meter longer, the outer circumference of the magnetic steel is provided with a waterproof cover for preventing water from entering the upper cavity from the lower cavity, and the waterproof cover is provided with a lower opening, and the outer circumference of the opening end forms a sealed connection with the avoidance hole .

In order to make the measurement result more accurate, the high magnetic permeability stator piece, the wire frame iron core and the upper cover of the coil are provided with a magnetic shield for preventing external magnetic field interference.

In order to better display the reading of the water meter, the circuit board is also connected with a display screen for displaying the fluid flow value, and a battery for supplying power to the circuit board and the display screen is also arranged on the circuit board.

In order to be able to connect with the remote terminal, directly transmit the readings of the water meter to the remote terminal, and simultaneously monitor the magnetic induction pulse water meter in real time, the circuit board is also provided with a wireless communication module.

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

(1) The magnetic induction pulse water meter provided by the utility model, the water meter drives the magnetic steel to rotate through the impeller shaft to generate a pulse signal on the coil, and converts the pulse signal into water flow information, so that the measurement accuracy is high and the measurement is accurate when the water flow is small , small leakage, in addition, the water meter also has the advantages of low manufacturing cost, high precision, and convenient installation;

(2) The magnetic induction pulse water meter provided by the utility model is provided with a waterproof cover to prevent water from entering the upper cavity from the lower cavity, so that the service life of the water meter is longer;

(3) In the magnetic induction pulse water meter provided by the utility model, the high magnetic permeability stator piece, the wire frame iron core and the upper cover of the coil are provided with a magnetic shield for preventing external magnetic field interference, so that the measurement result is more accurate, and at the same time, it can prevent the water meter from being touched by the magnet. The phenomenon of interfering and stealing water;

(4) The magnetic induction pulse water meter provided by the utility model is equipped with a wireless communication module, which can be connected with a remote terminal, and the reading of the water meter can be directly transmitted to the remote terminal, without manual meter reading, which reduces labor costs, and at the same time can be used for the magnetic induction pulse water meter. real-time monitoring;

(5) The magnetic induction pulse water meter provided by the utility model has the advantages of simple structure, reliable performance, maintenance-free and long service life.

Description of drawings

The utility model will be further described below in conjunction with embodiment with reference to accompanying drawing:

Fig. 1 is the structural representation of the utility model magnetic induction pulse water meter;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is a structural schematic diagram of the impeller, impeller shaft, magnetic steel, high magnetic permeability stator piece, wire frame iron core and coil of the utility model;

Fig. 4 is the structural representation of magnetic steel among Fig. 3;

Fig. 5 is the waveform diagram of the pulse signal when the flow rate is small;

Fig. 6 is a waveform diagram of a pulse signal at a large flow rate.

Explanation of symbols in the figure: 1. Water meter body, 2. Inner shell base, 2-1. Avoidance hole, 3. Upper cavity, 4. Lower cavity, 5. Water inlet, 6. Water outlet, 7. Impeller base, 8. Impeller, 9. Impeller shaft, 10. Magnetic steel, 10-1. Magnetic area, 11. High magnetic permeability stator piece, 11-1. Magnetic pole cavity, 12. Wire frame core, 13. Circuit board, 14. Coil, 15, waterproof cover, 16, magnetic shield, 17, display screen, 18, battery.

detailed description

Below in conjunction with description accompanying drawing and specific embodiment the utility model content is described in detail:

As shown in Figure 1-Figure 6, a magnetic induction pulse water meter provided by the utility model includes a water meter body 1, and a cavity is provided in the water meter body 1, and the feature is that an inner shell base 2 is arranged in the middle of the cavity , the inner housing base 2 divides the cavity into an upper cavity 3 above it and a lower cavity 4 below it, the lower part of the lower cavity 4 is provided with a water inlet 5, and the upper part of the lower cavity 4 is A water outlet 6 is provided, an impeller base 7 is arranged in the lower cavity 4, an impeller 8 is rotatably connected to the impeller base 7, an impeller shaft 9 is fixed on the impeller 8, and an impeller shaft 9 is fixed on the inner shell base 2. There is an avoidance hole 2-1 for avoiding the impeller shaft 9, the upper end of the impeller shaft 9 passes through the avoidance hole 2-1 and is exposed in the upper cavity 3, and the upper end of the impeller shaft 9 is coaxially fixed with a magnetic steel 10. The magnetic induction pulse water meter also includes a high magnetic permeability stator piece 11, a wire frame iron core 12 and a circuit board 13 located in the upper cavity 3 and fixed on the inner shell base 2, as shown in Figures 2 and 3, The high magnetic permeability stator piece 11 is provided with a magnetic pole cavity 11-1, and the magnetic steel 10 is located in the magnetic pole cavity 11-1, as shown in Figure 4, the magnetic steel 10 is provided with two equally divided magnetic region 10-1 and the magnetic poles of the two magnetic regions 10-1 are opposite. As shown in FIG. The pulse signal and convert the pulse signal into fluid flow information.

The magnetic induction pulse water meter provided by the utility model, when the water flow enters the lower cavity 4 from the water inlet 5, it will drive the impeller 8 to rotate. The magnetic stator piece 11 is transmitted to the wire frame iron core 12. Since the magnetic steel 10 is provided with different magnetic poles, the magnetic poles on the wire frame iron core 12 are constantly changing when rotating, so that the coil 14 generates a quantity corresponding to the water flow. Inducing voltage pulse signals, the circuit board 13 receives the induced voltage pulse signals, and converts the pulse signals into fluid flow information for output. As shown in Figure 5, it is a waveform diagram of the pulse signal at low flow rate, and as shown in Figure 6, it is a waveform diagram of the pulse signal at high flow rate. According to the requirement of precision, an even number of magnetic regions 10 - 1 equally divided can be provided on the magnetic steel 10 , and the more magnetic regions 10 - 1 are, the higher the measurement accuracy is.

As shown in Figure 2, in order to make the service life of the water meter longer, the magnetic steel 10 is covered with a waterproof cover 15 for preventing water from entering the upper cavity 3 from the lower cavity 4, and the waterproof cover 15 is provided with a lower It is open and the open end is fixed on the avoidance hole 2-1.

As shown in FIG. 2 , in order to make the measurement results more accurate, the high magnetic permeability stator piece 11 , wire frame iron core 12 and coil 14 are covered with a magnetic shield 16 for preventing external magnetic field interference.

As shown in Figure 2, in order to better display the reading of the water meter, the circuit board 13 is also connected with a display screen 17 for displaying the fluid flow value, and the circuit board 13 is also provided with a display screen 17 for providing information to the circuit board 13 and the display screen. 17 powered by batteries 18 .

In order to be able to connect with the remote terminal, directly transmit the readings of the water meter to the remote terminal, and simultaneously monitor the magnetic induction pulse water meter in real time, the circuit board 13 is also provided with a wireless communication module.

The above-mentioned specific implementation is only a detailed explanation of the technical solution of the utility model, and the utility model is not limited to the above-mentioned embodiments, and any improvement or replacement based on the principle of the utility model should be within the scope of protection of the utility model .

Claims (5)

1. A magnetic induction pulse water meter, comprising a water meter body (1), a cavity is provided in the water meter body (1), and it is characterized in that: an inner shell base (2) is arranged in the middle of the cavity, and the inner shell base ( 2) The cavity is divided into an upper cavity (3) above it and a lower cavity (4) below it, the lower part of the lower cavity (4) is provided with a water inlet (5), and the lower cavity The upper part of the body (4) is provided with a water outlet (6), and the lower cavity (4) is provided with an impeller base (7), and the impeller base (7) is rotatably connected with an impeller (8), and the impeller ( 8) The impeller shaft (9) is fixed on it, and the inner housing base (2) is provided with a avoidance hole (2-1) for avoiding the impeller shaft (9), and the upper end of the impeller shaft (9) passes through the avoidance The hole (2-1) is exposed behind and placed in the upper cavity (3), the upper end of the impeller shaft (9) is coaxially fixed with a magnetic steel (10), and the magnetic induction pulse water meter also includes a ) and fixed on the high magnetic permeability stator piece (11) on the inner shell base (2), the wire frame iron core (12) and the circuit board (13), the high magnetic permeability stator piece (11) is provided with Magnetic pole cavity (11-1), the magnetic steel (10) is located in the magnetic pole cavity (11-1), the magnetic steel (10) is provided with an even number of magnetic regions (10-1) equally divided and adjacent The magnetic poles of the two magnetic regions (10-1) are opposite, the wire frame iron core (12) is wound with a coil (14), and the circuit board (13) is connected with the coil (14) to obtain the coil (14) On the pulse signal and convert the pulse signal into fluid flow information. 2. The magnetic induction pulse water meter according to claim 1, characterized in that: the outer circumference of the magnetic steel (10) is provided with a waterproof cover (15) for preventing water from entering the upper cavity (3) from the lower cavity (4) ), the waterproof cover (15) is provided with a lower opening and the outer periphery of the opening end forms a sealed connection with the escape hole (2-1). 3. The magnetic induction pulse water meter according to claim 1, characterized in that: the high magnetic permeability stator piece (11), wire frame iron core (12) and coil (14) are covered with a cover for preventing external magnetic field interference Magnetic shield (16). 4. The magnetic induction pulse water meter according to any one of claims 1-3, characterized in that: the circuit board (13) is also connected with a display screen (17) for displaying fluid flow values, and the circuit board ( 13) is also provided with a battery (18) for supplying power to the circuit board (13) and the display screen (17). 5. The magnetic induction pulse water meter according to any one of claims 1-3, characterized in that: the circuit board (13) is also provided with a wireless communication module.