Non-contact water level sensor

Abstract

The utility model relates to the technical field of water level monitoring, and particularly discloses a non-contact water level sensor, which comprises a fixed cylinder, a plurality of sensing metal pieces, a plurality of water level sensors and a water level sensor, the mounting seats are arranged at the end parts of the two ends of the fixed cylinder; the connecting assembly comprises an air pressure cavity which is arranged in the mounting seat and is in sealing contact with the wall surface of an external container, an adjusting piston which is in sliding sealing connection with the air pressure cavity, and an adjusting rod which is connected with the adjusting piston and is in threaded connection with the mounting seat. The mounting base, the fixing cylinder and the sensing metal parts arranged on the fixing cylinder are mounted on the surface of the container or detached from the surface of the container under the action of air pressure, the appearance structure of the container cannot be damaged, connection is firm, the service life of the container is prolonged, and the service life of the container is prolonged. The stability is high.

Description

TECHNICAL FIELD

[0001] The application relates to the water level monitoring technical field and discloses a non-contact water level sensor. BACKGROUND

[0002] The water level sensor can collect data by using a data collector, the water level change data can be collected and sent to an upper computer, so that the water level change can be effectively monitored.

[0003] Generally, the non-contact water level sensor mainly comprises an MUC controller, a voltage stabilizing chip circuit, a load driving circuit, a non-contact signal circuit, a communication transmission circuit and a capacitive liquid level switch. The sensing metal part in the capacitive liquid level switch is used for detecting whether there is liquid at the height of the sensing metal part. The non-contact water level sensor is usually installed on the wall surface of a container and is used for monitoring whether the liquid in the container reaches a set height. However, the fixing mode of the non-contact water level sensor mainly depends on bolt fixing or strap fixing. The bolt fixing needs to configure a corresponding mounting frame on the surface of the container, so that the appearance structure of the container is changed and the universality of the container is weakened. The strap fixing has the problems of poor stability and weak anti-interference ability. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a non-contact water level sensor which is convenient to install and fix.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a non-contact water level sensor which comprises:

[0006] A fixing cylinder is axially uniformly provided with a plurality of sensing metal parts.

[0007] Mounting seats are arranged at the two ends of the fixing cylinder.

[0008] A connecting assembly comprises an air pressure cavity which is arranged in the mounting seat and is in sealing contact with the wall surface of an external container, an adjusting piston which is in sliding sealing connection with the air pressure cavity, and an adjusting rod which is connected with the adjusting piston and is in threaded connection with the mounting seat.

[0009] The principle and effect of the basic scheme are as follows:

[0010] Compared with the prior art, the utility model discloses in the process of installing and disassembling the fixed cylinder, only need to rotate the adjusting rod, utilize the thread cooperation between adjusting rod and mounting seat to drive adjusting piston to move in the air pressure chamber, and then make the pressure change in the air pressure chamber, utilize the effect of air pressure to make mounting seat, fixed cylinder and multiple induction metal pieces arranged on fixed cylinder install to the container surface or disassemble from the container surface, not only can not destroy the appearance structure of container, and firm connection, strong stability.

[0011] Further, the adjusting rod comprises a threaded rod and a piston rod connected with each other, and a threaded hole with a diameter smaller than that of the air pressure chamber and threadedly matched with the threaded rod is arranged in the mounting seat.

[0012] Further, a knob is arranged at the end of the adjusting rod away from the air pressure chamber, so that the adjusting rod can be conveniently rotated.

[0013] Further, a connecting groove is arranged at the end of the knob close to the adjusting rod, and a connecting block is arranged at the end of the adjusting rod close to the knob, and the cross sections of the connecting groove and the connecting block are the same regular polygon. Since the adjusting rod, the knob and the adjusting piston have the structural feature that the two ends are large and the middle part is small, the adjusting rod can be conveniently assembled and disassembled through the arrangement.

[0014] Further, a sealing groove with the same center as the air pressure chamber and a diameter larger than that of the air pressure chamber is arranged at the side of the mounting seat close to the wall surface of the external container, and a sealing ring is arranged in the sealing groove, so that the sealing performance between the air pressure chamber and the wall surface of the external container is improved.

[0015] Further, the sealing ring comprises a plurality of O-rings with lengths changing in sequence, and the side surface of the sealing groove is provided with a plurality of stepped surfaces respectively matched with the O-rings, so that the sealing performance between the air pressure chamber and the wall surface of the external container is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A schematic diagram of the non-contact water level sensor is shown.

[0018] Figure 2 An exploded view of the connecting assembly in the non-contact water level sensor is shown. DETAILED DESCRIPTION

[0019] To further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0020] The reference signs in the drawings of the specification include: mounting seat 1, end cover 2, sensing metal piece 3, fixed cylinder 4, lead-out wire 5, knob 6, connecting seat 7, threaded rod 8, connecting block 9, piston rod 10, adjusting piston 11, threaded sleeve 12, adjusting pipe sleeve 13, sealing ring 14.

[0021] The non-contact water level sensor, for example Figure 1 As shown: including a protective cover made of glass, a fixed cylinder 4 arranged in the protective cover, a plurality of sensing metal pieces 3 arranged along the axis of the fixed cylinder 4, end covers 2 arranged at both ends of the protective cover, mounting seats 1 arranged on each end cover 2, and a connecting assembly arranged on the mounting seat 1 and used to connect the protective cover and the outer wall of the container.

[0022] Among them, the wires of the plurality of sensing metal pieces 3 pass from the inside of the fixed cylinder 4 and out of the end cover 2 at one end of the protective cover, and are connected with the MUC controller, voltage stabilizing chip circuit, load driving circuit, non-contact signal circuit, communication transmission circuit, etc. through the lead-out wire 5, so as to detect whether there is liquid at the height of the sensing metal piece 3, and transmit the signal externally, and each sensing metal piece 3 is connected with a signal indicator lamp through the MUC controller, voltage stabilizing chip circuit, load driving circuit, so as to feedback the liquid level information in the form of the indicator lamp.

[0023] As Figure 2As shown, the connecting assembly comprises a gas pressure cavity arranged in the mounting base 1 and in sealing contact with the wall surface of the external container, an adjusting sleeve 13 arranged in the gas pressure cavity, an adjusting piston 11 in sliding sealing connection with the adjusting sleeve 13, and an adjusting rod connected with the adjusting piston 11 and in threaded connection with the mounting base 1, wherein the adjusting rod comprises a threaded rod 8 and a piston rod 10 connected with each other, a threaded sleeve 12 with a smaller diameter than the gas pressure cavity is arranged in the mounting base 1 and in threaded cooperation with the threaded rod 8, and a threaded hole is arranged in the threaded sleeve 12; a knob 6 is further arranged at one end of the adjusting rod, and since the adjusting rod, the knob 6 and the adjusting piston 11 have a structure feature that the two ends are large and the middle part is small, it is not easy to assemble, and in the embodiment, a connecting seat 7 is arranged at the end of the knob 6, a connecting groove with a regular hexagonal cross section is arranged in the connecting seat 7, and a connecting block 9 adapted to the connecting groove is arranged at the end of the adjusting rod, the knob 6 and the adjusting rod can be detachable, and the knob 6 can drive the adjusting rod to rotate by cooperating the connecting groove with the connecting block 9.

[0024] In order to improve the sealing performance between the gas pressure cavity and the wall surface of the external container, the side surface of the mounting base 1 close to the container is arranged as an arc surface, and a sealing groove with the same center as the gas pressure cavity and a larger diameter than the gas pressure cavity is arranged on the arc surface, a sealing ring 14 is arranged in the sealing groove, and the sealing ring 14 comprises a plurality of O-rings with varying lengths, and the side surface of the sealing groove is provided with stepped surfaces respectively adapted to the O-rings.

[0025] Compared with the prior art, in the process of installing and dismounting the fixing cylinder 4, only the adjusting rod needs to be rotated, the threaded cooperation between the adjusting rod and the mounting base 1 is utilized to drive the adjusting piston 11 to move in the gas pressure cavity, the pressure change in the gas pressure cavity is utilized to make the mounting base 1, the fixing cylinder 4 and the plurality of sensing metal pieces 3 arranged on the fixing cylinder 4 installed on or dismounted from the surface of the container, which will not damage the outer shape structure of the container, and the connection is firm and stable.

[0026] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, although the present application has been disclosed as above with a preferred embodiment, however, it is not intended to limit the present application, any person skilled in the art, without departing from the technical solution of the present application, can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any indirect modification, equivalent change and modification of the above embodiments according to the technical essence of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. A non-contact water level sensor characterized by, The utility model relates to a kind of adjustable air pressure cylinder, including: Fixed cylinder, the fixed cylinder is evenly provided with several inductive metal parts axially; Mounting seat, is located at the end of the fixed cylinder both ends; Connecting assembly, including the air pressure cavity being located in the mounting seat and being in sealed contact with the outer container wall surface, the adjusting piston being slidably sealed with the air pressure cavity, the adjusting rod being connected with the adjusting piston and being threadedly connected with the mounting seat.

2. The non-contact water level sensor of claim 1, wherein, The adjusting rod includes a threaded rod and a piston rod connected to each other, and the mounting seat is provided with a threaded hole smaller in diameter than the air pressure cavity and threadedly matched with the threaded rod.

3. The non-contact water level sensor of claim 1, wherein, The end of the adjusting rod away from the air pressure cavity is further provided with a knob.

4. The non-contact water level sensor of claim 3, wherein, The end of the knob close to the adjusting rod is provided with a connecting groove, and the end of the adjusting rod close to the knob is provided with a connecting block, and the cross section of the connecting block and the connecting groove is the same regular polygon.

5. The non-contact water level sensor of claim 1, wherein, The side of the mounting seat close to the outer container wall surface is provided with a sealing groove concentric with the air pressure cavity and larger in diameter than the air pressure cavity, and a sealing ring is arranged in the sealing groove.

6. The non-contact water level sensor of claim 5, wherein, The sealing ring includes a plurality of O-rings with varying lengths, and the side of the sealing groove is provided with a stepped surface adapted to each O-ring.

7. The non-contact water level sensor of claim 1, wherein, The outer wall of the fixed cylinder is sleeved with a protective cover, and the two ends of the protective cover are provided with end caps, and the fixed cylinder is connected with the end caps.

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