CN211626629U

CN211626629U - Miniature electronic liquid level sensor

Info

Publication number: CN211626629U
Application number: CN202020203072.7U
Authority: CN
Inventors: 王欢; 刘永生
Original assignee: Shenzhen Matterene Technology Co ltd
Current assignee: Shenzhen Matterene Technology Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-02
Anticipated expiration: 2030-02-25

Abstract

The utility model relates to a sensor field specifically is a miniature electron level sensor. The electronic angle deviation action switch is packaged in a vibration switch packaging tube, the inner cavity of the vibration switch packaging tube and the electronic angle deviation action switch are closely packaged and fixed through a pouring sealant sealing body, a buoyancy inclusion is wrapped or assembled outside the vibration switch packaging tube to form a composite packaging body, the electronic angle deviation action switch is positioned in the buoyancy inclusion, and each conductive pin of the electronic angle deviation action switch is connected with one end of a conductive wire in one flexible conductive cable; the flexible conductive cable penetrates through the plate penetrating sealing and fixing system, so that the electronic angle deviation action switch is fixed on the wall of the perforated container through the plate penetrating sealing and fixing system. The sensor is installed by penetrating the plate, has the advantages of convenience in installation, small size, high sensitivity, easiness in acquisition of output signals and low price, and can be widely applied to the fields of industrial equipment and household appliances needing to be subjected to liquid level detection and control.

Description

Miniature electronic liquid level sensor

Technical Field

The utility model relates to a sensor field specifically is a miniature electron level sensor, but wide application in industrial equipment and the domestic appliance field that need carry out liquid level detection and control.

Background

Liquid level detection and liquid level control are electromechanical device process control problems frequently encountered in industrial production and people's life, and along with the improvement of industrial production automation and household appliance intelligent requirements, how to rapidly, accurately and conveniently detect and control liquid level is an important technical problem to be solved by liquid carrying equipment.

The conventional floating ball liquid level meter is usually large in volume and inconvenient to install; the novel ultrasonic liquid level meter is expensive; the non-contact capacitance liquid level meter cannot be applied to liquid level detection of metal containers.

In order to meet the requirements of sensing and controlling the liquid level in a small cavity, a miniature electronic liquid level sensor is urgently needed to be developed, the overall size of the device is not more than 10 cm, the minimum size is only a few micrometers, and the position change of the liquid level can be displayed through electric signals.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniature electron level sensor, this sensor adopt wear the board installation, have simple to operate, small, sensitivity is high, output signal easily gathers and low price's advantage.

The technical scheme of the utility model:

a miniature electronic level sensor comprising: flexible electrically conductive cable, vibration switch encapsulation pipe, electron angle skew action switch, buoyancy inclusion, the concrete structure is as follows:

the electronic angle deviation action switch is packaged in a vibration switch packaging tube, the inner cavity of the vibration switch packaging tube and the electronic angle deviation action switch are closely packaged and fixed through a pouring sealant sealing body, a buoyancy inclusion is wrapped or assembled outside the vibration switch packaging tube to form a composite packaging body, the electronic angle deviation action switch is positioned in the buoyancy inclusion, and each conductive pin of the electronic angle deviation action switch is connected with one end of a conductive wire in one flexible conductive cable; the flexible conductive cable penetrates through the plate penetrating sealing and fixing system, so that the electronic angle deviation action switch is fixed on the wall of the perforated container through the plate penetrating sealing and fixing system.

The plate penetrating sealing and fixing system of the miniature electronic liquid level sensor is composed of a hollow plate penetrating screw rod, a sealing rubber ring and a plate penetrating fixing nut, the hollow plate penetrating screw rod is of a right-angle structure with a horizontal section and a vertical section integrated, hollow inner cavities of the horizontal section and the vertical section are right-angle through holes, flexible conductive cables penetrate through the right-angle through holes, the inner cavities of the right-angle through holes and the flexible conductive cables are closely packed and fixed through a pouring sealant sealing body, and the other ends of wires in the flexible conductive cables are connected with a liquid level switch connector;

one side of the horizontal section, which is close to the vertical section, is provided with a baffle along a vertical body, one end of the horizontal section penetrates through a through hole of the perforated container wall, the baffle is tightly attached to one side of the perforated container wall, the part of the horizontal section, which penetrates through the perforated container wall, is provided with threads, a plate penetrating fixing nut is installed on the horizontal section, the plate penetrating fixing nut is tightly attached to the other side of the perforated container wall through a sealing rubber ring, and a hollow plate penetrating screw rod is fixed on the perforated container wall through the plate penetrating fixing nut and the baffle.

The electronic angle deviation action switch of the miniature electronic liquid level sensor is any one of a miniature ball vibration switch, a mercury vibration switch, a spring vibration switch and a miniature gyroscope, and the volume of an effective action part of the miniature electronic liquid level sensor is less than 5cm³。

Each conductive pin of the electronic angle deviation action switch of the miniature electronic liquid level sensor is in effective conductive connection with one end of a wire in one flexible conductive cable through welding or riveting, and a semi-free mooring-shaped mechanical combination body is formed by utilizing the mechanical strength of the flexible conductive cable.

The micro electronic liquid level sensor and the vibration switch packaging tube are metal tubes or plastic tubes.

The micro electronic liquid level sensor is wrapped or assembled with a buoyancy inclusion outside the encapsulated electronic angle deviation action switch to form a buoyancy mooring movement system, so that the composite encapsulation body is ensured to form mooring structure angle change under the action of liquid buoyancy at different liquid levels when contacting liquid, and the change enables the electronic angle deviation action switch to generate circuit connection change of current on-off.

The shape of the buoyancy inclusion of the miniature electronic liquid level sensor is various regular or irregular shapes, and the miniature electronic liquid level sensor adopts one or the combination of more than two of plastic, wood, hollow metal and foam material; or the density of the buoyancy inclusion is adjusted, so that the miniature electronic liquid level sensor meets the use requirements of liquids with different densities.

The miniature electronic liquid level sensor is connected with a liquid level switch joint made of a terminal rubber shell after a lead in a flexible conductive cable is led out, so that the liquid level switch joint is quickly connected with an electromagnetic valve, a PLC (programmable logic controller) or other data acquisition instruments.

The utility model has the advantages and beneficial effects that:

the utility model discloses an utilize liquid buoyancy to control the horizontal angle of mooring movement system, utilize the break-make change of miniature electron angle skew motion switch to show the change of liquid level. The utility model discloses miniature electron level sensor's volume is mainly limited to the volume of electron angle skew action switch, because this miniature electron angle skew action switch minimum workable one-tenth several microns size, this miniature electron level sensor's whole volume can be less to several microns's magnitude, can satisfy the technical requirement of liquid level sensing and control in the tiny container.

Drawings

Fig. 1 shows the basic structure and key components of the miniature electronic liquid level sensor of the present invention.

The names of the parts denoted by numerals in the drawings are as follows:

1: a liquid level switch joint; 2: a flexible conductive cable; 3: a hollow plate-penetrating screw (31 baffle, 32 horizontal section and 33 vertical section); 4: sealing the rubber ring; 5: penetrating a plate to fix the nut; 6: pouring a sealant sealing body; 7: a vibration switch packaging tube; 8: an electronic angular offset actuation switch; 9: a buoyancy inclusion; 10: an apertured container wall.

Fig. 2-7 are schematic diagrams of the mechanism action of the miniature electronic liquid level switch of the utility model under the free state (liquid level 1: circuit off) and the action state (liquid level 2: circuit off to liquid level 3: circuit on). Wherein, fig. 2 liquid level 1: free state, fig. 3 level 1: circuit open, fig. 4 level 2: action state one, fig. 5 level 2: circuit open, fig. 6 level 3: action state two, fig. 7 level 3: the circuit is turned on.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-7, the present invention relates to a miniature electronic liquid level sensor, which mainly comprises: liquid level switch connects 1, flexible electrically conductive cable 2, the board screw rod is worn to cavity 3, sealed rubber ring 4, wears board fixation nut 5, pouring sealant seal 6, vibration switch encapsulation pipe 7, electron angle skew action switch 8, buoyancy inclusion 9, trompil container wall 10 etc. and specific structure is as follows:

the electronic angle deviation action switch 8 is packaged in the vibration switch packaging tube 7, the inner cavity of the vibration switch packaging tube 7 and the electronic angle deviation action switch 8 are densely packaged and fixed through a pouring sealant sealing body 6, the outer portion of the vibration switch packaging tube 7 is wrapped or assembled with the buoyancy wrapping body 9 to form a composite packaging body, the electronic angle deviation action switch 8 is located in the buoyancy wrapping body 9, and each conductive pin of the electronic angle deviation action switch 8 is connected with one end of a conductive wire in one flexible conductive cable 2.

The flexible conductive cable 2 passes through a plate penetrating sealing fixing system consisting of a hollow plate penetrating screw rod 3, a sealing rubber ring 4 and a plate penetrating fixing nut 5, so that the electronic angle deviation action switch 8 is fixed on the wall 10 of the perforated container through the plate penetrating sealing fixing system. The board screw rod 3 is worn to cavity is horizontal segment 32, the integrative right angle shape structure of vertical section 33, and the cavity inner chamber of horizontal segment 32, vertical section 33 is right angle shape through-hole, and flexible electrically conductive cable 2 wears to locate right angle shape through-hole it is fixed to closely adorn through potting compound seal 6 between right angle shape through-hole inner chamber and the flexible electrically conductive cable 2, and the wire other end in the flexible electrically conductive cable 2 is connected with liquid level switch connects 1.

One side that is close to vertical section 33 on the horizontal segment 32 sets up baffle 31 along vertical an organic whole, the through-hole of trompil container wall 10 is passed to the one end of horizontal segment 32, baffle 31 hugs closely in one side of trompil container wall 10, the screw is seted up to the part that horizontal segment 32 passed trompil container wall 10, wear board fixation nut 5 to install on horizontal segment 32, wear board fixation nut 5 and hug closely in the opposite side of trompil container wall 10 through sealed rubber ring 4, make cavity wear board screw rod 3 be fixed in trompil container wall 10 through wearing board fixation nut 5 and baffle 31.

The electronic angle shift operation switch 8 can be any one of commercially available micro ball vibration switch, mercury vibration switch, spring vibration switch, micro gyroscope, etc., and its effective operation part volume is less than 5cm³(ii) a Each conductive pin of the electronic angle deviation action switch 8 is in effective conductive connection with one end of a conductive wire in one flexible conductive cable 2 in a welding, riveting and other connection mode, and a semi-free mooring-shaped mechanical combination body is formed by utilizing the mechanical strength of the flexible conductive cable 2. The micro switch part (the electronic angle deviation action switch 8) of the combination body is packaged by a vibration switch packaging tube 7 (a metal tube or a plastic tube), and the inner cavity of the vibration switch packaging tube 7 is sealed by a pouring sealant sealing body 6 so as to ensure that the electronic angle deviation action switch 8 is not contacted with liquid in a container in the working process; the cable part (flexible conductive cable 2) of the combination body is led out through the hollow inner cavity of the hollow plate-penetrating screw rod 3, and after the lead is led out, the hollow inner cavity of the hollow plate-penetrating screw rod 3 is sealed by the pouring sealant sealing body 6; the lead wire after being led out is made into a liquid level switch joint 1 by utilizing a terminal rubber shell so as to be conveniently and quickly connected with an electromagnetic valve, a PLC (programmable logic controller) or other data acquisition instruments.

As shown in fig. 2-7, a buoyancy inclusion 9 is wrapped or assembled outside the encapsulated electronic angle deviation action switch 8 to form a buoyancy mooring movement system, so as to ensure that the composite encapsulation body can form mooring structure angle change under the action of liquid buoyancy at different liquid levels when contacting liquid, and the electronic angle deviation action switch 8 generates circuit connection change of current on-off due to the change. The change effect can be used for opening the electromagnetic valve or can be detected by data acquisition devices such as a PLC (programmable logic controller) and the like as an electric signal, so that the reading and the automatic control of liquid level information are realized. The shape of the buoyancy inclusion 9 can be various regular or irregular shapes such as a cylinder, a sphere, a square and the like, the material can be one or the combination of more than two of plastic, wood, hollow metal, foam material and the like, and the density of the buoyancy inclusion can be adjusted to enable the miniature electronic liquid level sensor to meet the use requirements of liquids with different densities.

The above is the preferred embodiment of the present invention, and is not intended to limit the present invention. Wherein each component of the device can also be modified and deformed, without departing from the technical principle of the utility model, the modification and the deformation should also be regarded as the protection scope of the utility model.

Claims

1. A miniature electronic level sensor, comprising: flexible electrically conductive cable, vibration switch encapsulation pipe, electron angle skew action switch, buoyancy inclusion, the concrete structure is as follows:

2. The miniature electronic liquid level sensor according to claim 1, wherein the through-plate sealing and fixing system comprises a hollow through-plate screw, a sealing rubber ring and a through-plate fixing nut, the hollow through-plate screw is of a right-angle structure with a horizontal section and a vertical section integrated, hollow inner cavities of the horizontal section and the vertical section are right-angle through holes, a flexible conductive cable is arranged through the right-angle through holes in a penetrating manner, the inner cavities of the right-angle through holes and the flexible conductive cable are closely fixed through a sealing body of potting adhesive, and the other end of a wire in the flexible conductive cable is connected with the liquid level switch joint;

3. The microelectronic liquid level sensor according to claim 1, wherein the electronic angle shift action switch is any one of a micro ball vibration switch, a mercury vibration switch, a spring vibration switch, and a micro gyroscope, and the volume of the effective action part is less than 5cm³。

4. The microelectronic liquid level sensor according to claim 1, wherein each conductive pin of the electronic angular displacement actuation switch is electrically connected to one end of a conductive wire of a flexible conductive cable by welding or riveting, and forms a semi-free captive mechanical assembly by using the mechanical strength of the flexible conductive cable.

5. The microelectronic liquid level sensor according to claim 1, wherein the vibration switch packaging tube is a metal tube or a plastic tube.

6. The microelectronic liquid level sensor according to claim 1, characterized in that the buoyancy inclusion is wrapped or assembled outside the encapsulated electronic angle shift motion switch to form a buoyancy mooring motion system, so as to ensure that the composite encapsulation forms a mooring structure angle change under the action of liquid buoyancy at different liquid levels when contacting liquid, and the change causes the electronic angle shift motion switch to generate circuit connection change of current on-off.

7. The miniature electronic liquid level sensor according to claim 1, wherein the shape of the buoyancy inclusion is various regular or irregular shapes, and is one or a combination of more than two of plastic, wood, hollow metal and foam material; or the density of the buoyancy inclusion is adjusted, so that the miniature electronic liquid level sensor meets the use requirements of liquids with different densities.

8. The miniature electronic liquid level sensor according to claim 1, wherein the lead wire in the flexible conductive cable is connected to a liquid level switch connector made of a terminal rubber shell after being led out, so that the liquid level switch connector is rapidly connected to the solenoid valve, the PLC controller or the data acquisition instrument.