CN209069354U - A power-free water flow sensor - Google Patents

Abstract

The utility model relates to a water flow sensor without power consumption, comprising a sensor main body, the sensor main body is L-shaped, a water inlet joint is installed on the lower end of the sensor main body, and an upper end of the sensor main body is inserted and installed with a water inlet connector. Valve shaft, the interior of the sensor body is located at the upper end of the water inlet joint, and a magnet rotor assembly is installed, and a Hall induction assembly is installed on the outer side wall of the sensor body at a position corresponding to the magnet rotor assembly. The utility model has a simple structure, can generate induced current through the flow of water flow, realize the conversion of water flow signal to electric signal, and realize automatic opening and closing of the machine according to the magnitude of the induced current.

Description

A power-free water flow sensor

technical field

The utility model relates to the field of sensors, in particular to a water flow sensor without power consumption.

Background technique

As water equipment becomes more and more intelligent and integrated, the use of water flow sensors for water flow sensing is becoming more and more extensive, but the current water flow sensors have their own shortcomings: the common water and gas linkage needs to be increased. It is not suitable for some remote areas with low water pressure or old communities with low water pressure; due to the internal structural characteristics of the reed switch low water pressure valve, there are problems of stuck and misjudgment; Ordinary water flow sensors have the disadvantages of high price, few appearance options and high energy consumption. The sensor involved in the utility model just makes up for the shortcomings of the existing water flow sensor, and has the characteristics of low water pressure judgment, safety without misjudgment, and low energy consumption.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to provide a water flow sensor with no power consumption, which has a simple structure, can generate an induced current through the flow of water flow, and realize the automatic opening and closing of the machine through the magnitude of the induced current.

The technical solution adopted by the utility model to solve the technical problem is to provide a water flow sensor without power consumption, which includes a sensor body, the sensor body is L-shaped, and a water inlet connector is installed at the lower end of the sensor body, so The upper end of the sensor body is inserted and installed with a valve shaft, the interior of the sensor body is located at the upper end of the water inlet joint, and a magnet rotor assembly is installed, and the outer side wall of the sensor body is in a position corresponding to the magnet rotor assembly. A hall sensor assembly is installed.

As a supplement, a pressure plate for fixing the valve shaft is installed on one end of the upper side of the sensor body, and the pressure plate is connected and fixed with the sensor body by screws.

Preferably, the water inlet joint is connected and fixed to the sensor body through a radially inserted U-shaped plug.

Further, the lower end of the magnet rotor assembly is provided with a metal snap ring connected to the inner wall of the sensor body to limit the position of the magnet rotor assembly.

Further, an O-ring is installed between the water inlet joint and the valve shaft and the inner side wall of the sensor body.

Further, a pressure relief valve is connected and installed on one side of the water inlet joint.

Beneficial effects: The utility model relates to a water flow sensor without power consumption, which has simple structure and convenient installation. It can generate induced current through the flow of water flow, realize the conversion of water flow signal to electrical signal, and realize the automatic operation of the machine through the magnitude of the induced current. On and off.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of the present utility model;

Fig. 2 is the front view half-section structure diagram of the present utility model;

FIG. 3 is an exploded perspective structural view of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

As shown in FIGS. 1-3 , the embodiment of the present invention relates to a water flow sensor without power consumption, including a sensor body 4 , the sensor body 4 is L-shaped, and the lower end of the sensor body 4 is installed with a water inlet The joint 12, the upper end of the sensor body 4 is inserted and installed with the valve shaft 2, the interior of the sensor body 4 is located at the upper end of the water inlet joint 12 and the magnet rotor assembly 8 is installed, and the outer side of the sensor body 4 is installed A Hall induction assembly 5 is installed on the wall at a position corresponding to the magnet rotor assembly 8 .

The Hall induction assembly 5 is a 2-wire Hall element, which can output a pulse width signal through the conversion of magnetic poles when the magnet rotor in the magnet rotor assembly 8 rotates.

When there is no water flow, the magnet rotor does not rotate, the Hall element has no signal output, the pulse igniter does not receive a signal, and the whole machine is in a standby state without power consumption.

When there is water flowing in the pipeline, the magnet rotor rotates, and the Hall element outputs a signal. When the set signal lower limit is reached, the pulse igniter is activated to realize the start-up operation of the whole machine.

When the water flow of the running machine decreases to the set lower limit value, the corresponding Hall element output signal weakens to the set lower limit value, and the pulse igniter enters the shutdown process according to the preset program.

The upper end of the sensor body 4 is provided with a pressure plate 1 for fixing the valve shaft 2 , and the pressure plate 1 is connected and fixed to the sensor body 4 through screws 6 .

The water inlet joint 12 is connected and fixed with the sensor body 4 through the radially inserted U-shaped plug 7 .

The lower end of the magnet rotor assembly 8 is installed with a metal snap ring 9 connected to the inner wall of the sensor body 4 to limit the position of the magnet rotor assembly 8 .

An O-ring 3 is installed between the water inlet joint 12 and the valve shaft 2 and the inner side wall of the sensor body 4 .

A pressure relief valve 10 is connected and installed on one side of the water inlet joint 12 .

The utility model has the advantages of simple structure and convenient installation, can generate induction current through the flow of water flow, realize the conversion of water flow signal to electric signal, and realize the automatic opening and closing of the machine according to the magnitude of the induction current.

Claims (6)

1. a kind of idle water flow sensing unit, including sensor main body (4), which is characterized in that the sensor main body (4) is in L shape, the lower end of the sensor main body (4) are equipped with water supply connector (12), upside one end of the sensor main body (4) Insertion is equipped with valve shaft (2), and the upper end for being internally located at water supply connector (12) of the sensor main body (4) is equipped with magnet and turns Sub-component (8), position corresponding with Magnmet rotor component (8) is equipped with suddenly on the lateral wall of the sensor main body (4) That inductive component (5).

2. idle water flow sensing unit according to claim 1, it is characterised in that: the sensor main body (4) it is upper Side one end is equipped with the pressing plate (1) that valve shaft (2) are fixed, and the pressing plate (1) is connected by screw (6) and sensor main body (4) Connect fixation.

3. idle water flow sensing unit according to claim 1, it is characterised in that: the water supply connector (12) passes through diameter It is connected and fixed to the U-shaped bolt (7) of insertion with sensor main body (4).

4. idle water flow sensing unit according to claim 1, it is characterised in that: the Magnmet rotor component (8) Lower end is equipped with the metal clasp (9) being connected with sensor main body (4) inner wall, limits to Magnmet rotor component (8).

5. idle water flow sensing unit according to claim 1, it is characterised in that: the water supply connector (12) and valve shaft (2) it is mounted between the inner sidewall of sensor main body (4) O-ring seal (3).

6. idle water flow sensing unit according to claim 1, it is characterised in that: the side of the water supply connector (12) It is connected and installed with relief valve (10).