CN213422269U

CN213422269U - High-sensitivity low-flow sensor

Info

Publication number: CN213422269U
Application number: CN202022643030.8U
Authority: CN
Inventors: 陈国威; 黎维铿; 洪应军
Original assignee: Shenzhen Shengdele Electronics Co ltd
Current assignee: Shenzhen Shengdele Electronics Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-11
Anticipated expiration: 2030-11-16

Abstract

The utility model provides a low flow sensor of high sensitivity, includes the sensor body, the inside sap cavity that is provided with of sensor body, the coaxial pivot that is provided with of sap cavity axle center department, it is provided with the float to rotate the connection in the pivot, float axle center and the coaxial setting of pivot, the radial both ends of float all are provided with magnet, sap cavity left side below and upper right position punishment do not are provided with liquid outlet and the inlet of intercommunication sap cavity and outside, the external diameter of float slightly is less than the internal diameter of sap cavity, lie in the other hall switch that is provided with of magnet stroke orbit on the sensor body, hall switch is connected with magnet magnetic induction, and it can provide the high sensitivity high stability's of detection data in the liquid flow of low flow, brings revolutionary facility for low flow liquid level detection field.

Description

High-sensitivity low-flow sensor

Technical Field

The utility model relates to a sensor technical field specifically is a low flow sensor of high sensitivity.

Background

Along with the liquid supply equipment towards the refinement development, more and more liquid supply equipment need monitor the flow of liquid, and flow sensor should be had to the utmost on the existing market, but most sensitivity all is on the low side, leads to some liquid detection fields of low flow to lack reliable and stable sensor, brings the puzzlement for the test field of low flow, and the structure is all comparatively complicated moreover, and the production and processing degree of difficulty is high.

Disclosure of Invention

An object of the utility model is to provide a low flow sensor of high sensitivity, it can provide the high sensitivity high stability's of high sensitivity detection data in the liquid flow of low flow, brings revolutionary facility for low flow liquid level detection field to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low flow sensor of high sensitivity, includes the sensor body, the inside sap cavity that is provided with of sensor body, the coaxial pivot that is provided with of sap cavity axle center department, it is provided with the float to rotate the connection in the pivot, float axle center and the coaxial setting of pivot, the radial both ends of float all are provided with magnet, sap cavity left side below and the punishment of upper right side position do not are provided with liquid outlet and the inlet of intercommunication sap cavity and outside, the external diameter of float slightly is less than the internal diameter of sap cavity, lie in the other hall switch that is provided with of magnet stroke orbit on the sensor body, hall switch is connected with magnet magnetic induction.

Preferably, the liquid cavity is a circular tube-shaped cavity.

Preferably, the hall switch is arranged in isolation from the liquid chamber.

Preferably, the hall switch is disposed at a midpoint above the liquid chamber.

Preferably, the radial cross-sectional profile of the float is olive-shaped.

Preferably, the liquid outlet and the liquid inlet are located on the same diameter of the liquid cavity.

Compared with the prior art, the utility model discloses beneficial effect:

the utility model discloses, liquid outlet and inlet set up respectively in sap cavity left side below and upper right side, and arrange the same diameter direction in sap cavity in, low flow liquid is almost pasting the sap cavity wall flow when getting into the sap cavity, and float density is very low, for light and handy class part, utilize this kind of structure alright accurate drive float when can ensure that there is the liquid inflow to rotate, thereby play high sensitivity's detection, the float replacement traditional sensor that uses density far less than water uses plastics impeller also can be very big improvement detectivity and stability, therefore, this technical scheme can provide high sensitivity high stability's detection data in the liquid flow of low flow, bring revolutionary facility for low flow liquid level detection field.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

In the figure: 1 a sensor body; 2, a liquid cavity; 3, rotating a shaft; 4, a floater; 5, a magnet; 6 a liquid outlet; 7 liquid inlet; 8 Hall switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, in an embodiment of the present invention, a high-sensitivity low-flow sensor includes a sensor body 1, a liquid chamber 2 is disposed inside the sensor body 1, the liquid chamber 2 is a circular tube-shaped chamber, a rotating shaft 3 is coaxially disposed at an axis of the liquid chamber 2, a float 4 is rotatably connected to the rotating shaft 3, an axis of the float 4 and the rotating shaft 3 are coaxially disposed, a radial cross-sectional profile of the float 4 is an olive shape with two tips at the middle, magnets 5 are disposed at two radial ends of the float 4, a liquid outlet 6 and a liquid inlet 7 communicating the liquid chamber with the outside are disposed at positions on a lower left side and an upper right side of the liquid chamber 2, the liquid outlet 6 and the liquid inlet 7 are located on the same diameter of the liquid chamber 2, an outer diameter of the float 4 is slightly smaller than an inner diameter of the liquid chamber 2, a hall switch 8 is disposed on the sensor body 1, in this embodiment, the hall switch 8 is arranged at the center above the liquid chamber 2, and the hall switch 8 is connected with the magnet 5 in a magnetic induction manner.

The working principle is as follows: when a small flow of liquid flows in from the liquid inlet 7, the light floater 4 is pushed to rotate, so that the liquid flows out from the liquid outlet 6, the magnet 5 on the floater 4 is uniformly close to the Hall switch 8, and the Hall switch 8 uniformly and periodically outputs signals of high and low levels stably, so that the flow of the liquid is accurately measured.

In summary, the following steps: the utility model discloses, liquid outlet 6 and inlet 7 set up respectively in 2 left sides below in sap cavity and upper right side, and arrange in on 2 same diameter directions in sap cavity, low flow liquid is almost pasting the sap cavity wall flow when getting into sap cavity 2, and float 4 density is very low, for light and handy class part, utilize this kind of structure alright delicate drive float 4 to rotate when can guaranteeing to have the liquid inflow, thereby play the detection of high sensitivity, use 4 replacement traditional sensors of float that density is far less than water to use plastics impeller also can be very big improvement detectivity and stability, therefore, this technical scheme can provide the detection data of high sensitivity high stability in the liquid flow of low flow, bring revolutionary facility for the low flow liquid level detection field.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a low flow sensor of high sensitivity, includes sensor body (1), sensor body (1) inside is provided with sap cavity (2), its characterized in that: liquid chamber (2) axle center department is coaxial to be provided with pivot (3), the connection of rotating is provided with float (4) on pivot (3), float (4) axle center and pivot (3) coaxial setting, float (4) radial both ends all are provided with magnet (5), liquid chamber (2) left side below and the punishment of upper right side position do not are provided with liquid outlet (6) and inlet (7) that communicate liquid chamber and outside, the external diameter of float (4) slightly is less than the internal diameter of liquid chamber (2), lie in other hall switch (8) that are provided with of magnet (5) stroke orbit on sensor body (1), hall switch (8) are connected with magnet (5) magnetic induction.

2. A high sensitivity, low flow sensor according to claim 1, wherein: the liquid cavity (2) is a round tube-shaped cavity.

3. A high sensitivity, low flow sensor according to claim 1, wherein: the Hall switch (8) is arranged in an isolated way with the liquid cavity (2).

4. A high sensitivity, low flow sensor according to claim 1 or 3, wherein: the Hall switch (8) is arranged at the middle position above the liquid cavity (2).

5. A high sensitivity, low flow sensor according to claim 1, wherein: the radial section profile of the floater (4) is olive-shaped.

6. A high sensitivity, low flow sensor according to claim 1, wherein: the liquid outlet (6) and the liquid inlet (7) are positioned on the same diameter of the liquid cavity (2).