CN211234631U

CN211234631U - High-precision liquid level transmitter

Info

Publication number: CN211234631U
Application number: CN201922163380.1U
Authority: CN
Inventors: 陈友道; 肖毅胤
Original assignee: Qinghai Lizhan Iot Technology Co ltd
Current assignee: Qinghai Zhongdian Digital Smart Security Technology Co.,Ltd.
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-11
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a high accuracy liquid level changer relates to liquid level changer technical field. The utility model comprises a signal component, a mounting flange and a guide rod, wherein the signal component comprises a shielding cover, and a transmitting module is fixedly arranged in the shielding cover; one end of the transmitting module is connected with a signal amplifying circuit; one end of the transmitting module is connected with a threaded pipe; the peripheral side surface of the threaded pipe is in threaded connection with the mounting flange; the inner wall of the threaded pipe is in threaded connection with the guide rod; the peripheral side surface of the guide rod is respectively connected with a measuring floating ball and a thrust floating ball in a sliding way. The utility model discloses become traditional single floater formula liquid level loose changing ware is two floater formula level transmitter, through the design of two floaters to avoid the direct contact of measuring element and liquid, reduce measuring element's corruption and damage speed then, and through the design of thrust floater, the quick replacement at the fragile position of being convenient for can effectively prolong the life of this changer then.

Description

High-precision liquid level transmitter

Technical Field

The utility model belongs to the technical field of the liquid level changer, especially, relate to a high accuracy liquid level changer.

Background

The liquid level transmitter is an extension and development of the pressure transmitter technology, and realizes accurate measurement and transmission of the volume, liquid height and weight of water, oil and paste according to the principle that the pressure generated by liquids with different specific gravities at different heights is in a linear relation.

The existing floating ball liquid level transmitter consists of a liquid level sensor and a current converter, wherein a floating ball and the liquid level synchronously change to control a reed switch to be closed and opened, so that the resistance in the sensor linearly changes, and the change of the resistance is converted into a 4-20mA standard current signal by the converter and is superposed with a digital signal for output; the liquid level of a medium in an opening, a closed container or an underground tank can be displayed, alarmed and controlled in an instrument control chamber, the detected medium can be conductive and non-conductive liquid such as water, oil, acid, alkali, industrial sewage and the like, the influence of false liquid level caused by liquid foam can be overcome, the liquid level sensor is widely applied to industries such as oil refining, chemical engineering, papermaking, food, sewage treatment and the like, in the prior art, various liquid level transmitters are generated, for example, a patent document with the publication number of CN208968628U discloses an anticorrosive floating ball liquid level transmitter for chemical engineering, for example, a patent document with the application number of CN201720685159.0 discloses a floating ball liquid level transmitter, for example, a patent document with the application number of CN201821470385.8 discloses a double-floating ball liquid level transmitter, but the floating ball liquid level transmitters in the prior art are all single-floating ball liquid level transmitters, and measuring elements are easy to be adhered with liquid and further damaged, meanwhile, once the measuring floating ball of the single-floating-ball type liquid level transmitter in the prior art is damaged, the single-floating-ball type liquid level transmitter needs to be integrally replaced, so that the use cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high accuracy liquid level changer through the two floater formula designs of measuring floater and thrust floater, has solved the higher problem of current liquid level changer use cost.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a high-precision liquid level transmitter, which comprises a signal component, a mounting flange and a guide rod, wherein the signal component comprises a shielding cover, and a transmitting module is fixedly arranged in the shielding cover; one end of the transmitting module is connected with a signal amplifying circuit; one end of the transmitting module is connected with a threaded pipe; the peripheral side surface of the threaded pipe is in threaded connection with the mounting flange; the inner wall of the threaded pipe is in threaded connection with the guide rod; the peripheral side surface of the guide rod is respectively connected with a measuring floating ball and a thrust floating ball in a sliding manner; the peripheral side surface of the measuring floating ball is fixedly connected with a positioning sleeve; the peripheral side surface of the thrust floating ball is fixedly connected with a positioning ring and a baffle ring respectively; the peripheral side surface of the positioning ring is matched with the positioning sleeve; the peripheral side surface of the guide rod is respectively connected with an upper limit ring and a lower limit ring in a sliding way; the peripheral side surfaces of the upper limiting ring and the lower limiting ring are both in threaded connection with positioning screws; the peripheral side surface of the positioning screw is matched with the guide rod.

Further, the measuring floating ball comprises an upper hemisphere and a lower hemisphere; balancing weights are fixedly arranged inside the lower hemisphere and the thrust floating ball; the upper hemisphere is magnetic.

Furthermore, the peripheral sides of the measurement floating ball and the thrust floating ball are fixedly provided with super-hydrophobic and oleophobic coating films.

Furthermore, balls are fixedly arranged inside the thrust floating ball and the measuring floating ball.

Furthermore, a cable penetrates through the guide rod; a reed switch is fixedly arranged in the guide rod; one end of the transmitting module is connected with the reed pipe through a cable.

The utility model discloses following beneficial effect has:

1. the utility model discloses become traditional single floater formula liquid level loose changing ware is two floater formula level transmitter, design through two floaters, thereby avoid the direct contact of measuring element and liquid, then reduce measuring element's corruption and damage rate, and through the design of thrust floater, the quick replacement at the fragile position of being convenient for, then can effectively prolong the life of this changer, simultaneously through the design of measuring floater and thrust floater, help keeping the maintenance of the vertical state of floater, then reduce the error that the floater skew caused.

2. The utility model discloses a design of last spacing ring and lower spacing ring is favorable to the quick adjustment of spacing ring position, the quick maintenance of the floater of being convenient for simultaneously, dismantlement and change to increase the device's ease for use and commonality.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a high precision level transmitter;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of a signal assembly;

FIG. 4 is a schematic cross-sectional view of the float ball;

FIG. 5 is a schematic cross-sectional view of the thrust ball;

FIG. 6 is a schematic cross-sectional view of the upper retaining ring;

FIG. 7 is a schematic structural diagram of a measurement floating ball and a super-hydrophobic and oleophobic coating;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a signal component, 2-a mounting flange, 3-a guide rod, 4-a threaded pipe, 5-a measuring floating ball, 6-a thrust floating ball, 7-a positioning sleeve, 8-a positioning ring, 9-a retaining ring, 10-an upper positioning ring, 11-a lower positioning ring, 12-a positioning screw, 13-a super-hydrophobic and oleophobic coating film, 14-a ball, 101-a shielding cover, 102-a transmitting module, 103-a signal amplifying circuit, 501-an upper hemisphere, 502-a lower hemisphere and 503-a balancing weight.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention relates to a high precision liquid level transmitter, which comprises a signal assembly 1, a mounting flange 2 and a guide rod 3, wherein the signal assembly 1 comprises a shielding cover 101, and a transmitting module 102 is fixedly arranged inside the shielding cover 101; one end of the transmitting module 102 is connected with a signal amplifying circuit 103, and the side surfaces of the guide rod 3 and the shielding case 101 are coated with epoxy phenolic paint anticorrosive paint;

one end of the transmitting module 102 is connected with a threaded pipe 4, the interior of the threaded pipe 4 is of a hollow structure, the peripheral side face of the threaded pipe 4 is in threaded connection with the mounting flange 2, the mounting flange 2 is used for being connected with other mounting platforms, and the inner wall of the threaded pipe 4 is in threaded connection with the guide rod 3; the peripheral side surface of the guide rod 3 is respectively connected with a measuring floating ball 5 and a thrust floating ball 6 in a sliding way; the peripheral side surface of the measuring floating ball 5 is fixedly connected with a positioning sleeve 7, a positioning groove is formed in the positioning sleeve 7, and the peripheral side surface of the thrust floating ball 6 is respectively and fixedly connected with a positioning ring 8 and a retaining ring 9; the peripheral side surface of the positioning ring 8 is matched with the positioning sleeve 7; the peripheral side surface of the guide rod 3 is respectively connected with an upper limit ring 10 and a lower limit ring 11 in a sliding way; the peripheral side surfaces of the upper limiting ring 10 and the lower limiting ring 11 are in threaded connection with positioning screws 12, the lower ends of the positioning screws 12 are provided with rubber pads, so that the positioning screws 12 are prevented from being in hard contact with the guide rod 3, and the peripheral side surfaces of the positioning screws 12 are matched with the guide rod 3.

The measuring floating ball 5 comprises an upper hemisphere 501 and a lower hemisphere 502; a balancing weight 503 is fixedly arranged in the lower hemisphere 502 and the thrust floating ball 6; the upper hemisphere 501 has magnetism.

The super-hydrophobic oleophobic coating 13 is prepared from water, inorganic weak base, glycol homologues, alkylphenol polyoxyethylene ether emulsifier, sulfonate and/or sulfate type anionic emulsifier through a series of treatments, and the super-hydrophobic oleophobic coating is the existing coating and is not described herein any more.

The thrust floating ball 6 and the measurement floating ball 5 are both fixedly provided with balls 14, friction between the thrust floating ball 6 and the measurement floating ball 5 and the guide rod 3 is reduced by the aid of the balls 14, gaps are reduced, and the thrust floating ball 6 and the measurement floating ball 5 are effectively kept in a vertical state.

Wherein, the inside of the guide rod 3 is provided with a cable; a reed switch is fixedly arranged inside the guide rod 3; one end of the transmitting module 102 is connected with the reed switch through a cable.

One specific application of this embodiment is: the transmitter changes the traditional single-floating-ball type liquid level transmitter into a double-floating-ball type liquid level transmitter, and when the transmitter is used each time and the liquid level is stable, the transmitter module 102 is corrected or zeroed, thereby determining the initial measuring liquid level of the transmitting module 102 and eliminating the influence of the heights of the thrust floating ball 6 and the measuring floating ball 5, when in use, the positions of the upper limit ring 10 and the lower limit ring 11 can be flexibly adjusted through the positioning screw 12, and then the movable stroke of the floating ball can be adjusted, when in measurement, the positioning sleeve 7 is matched with the positioning ring 8 to automatically clamp the thrust floating ball 6 and the measurement floating ball 5, when in maintenance, the replacement of the floating ball can be rapidly carried out only by disassembling the lower limit ring 11, the arrangement of the threaded pipe 4 is favorable for adjusting the height of the mounting flange 2 and then adjusting the length of the guide rod 3 penetrating into the liquid, so that the device can be conveniently mounted in various use scenes.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-precision liquid level transmitter comprises a signal assembly (1), a mounting flange (2) and a guide rod (3), wherein the signal assembly (1) comprises a shielding cover (101), and a transmitting module (102) is fixedly arranged in the shielding cover (101); one end of the transmitting module (102) is connected with a signal amplifying circuit (103), and the transmitting module is characterized in that:

one end of the transmitting module (102) is connected with a threaded pipe (4); the peripheral side surface of the threaded pipe (4) is in threaded connection with the mounting flange (2); the inner wall of the threaded pipe (4) is in threaded connection with the guide rod (3); the peripheral side surface of the guide rod (3) is respectively connected with a measuring floating ball (5) and a thrust floating ball (6) in a sliding manner; the peripheral side surface of the measuring floating ball (5) is fixedly connected with a positioning sleeve (7); the peripheral side surface of the thrust floating ball (6) is respectively and fixedly connected with a positioning ring (8) and a baffle ring (9); the peripheral side surface of the positioning ring (8) is matched with the positioning sleeve (7); the peripheral side surface of the guide rod (3) is respectively connected with an upper limit ring (10) and a lower limit ring (11) in a sliding way; the peripheral side surfaces of the upper limiting ring (10) and the lower limiting ring (11) are both in threaded connection with positioning screws (12); the peripheral side surface of the positioning screw (12) is matched with the guide rod (3).

2. A high precision level transmitter as claimed in claim 1, characterized in that said measuring float (5) comprises an upper hemisphere (501) and a lower hemisphere (502); a balancing weight (503) is fixedly arranged in each of the lower hemisphere (502) and the thrust floating ball (6); the upper hemisphere (501) has magnetism.

3. A high precision liquid level transmitter as claimed in claim 1, characterized in that the peripheral sides of the measuring float ball (5) and the thrust float ball (6) are both fixedly provided with super hydrophobic and oleophobic coating film (13).

4. A high precision liquid level transmitter as claimed in claim 1, characterized in that the thrust floating ball (6) and the measuring floating ball (5) are both fixed with balls (14).

5. A high precision level transmitter as claimed in claim 1, characterized in that said guide rod (3) is internally threaded with a cable; a reed switch is fixedly arranged inside the guide rod (3); one end of the transmitting module (102) is connected with the reed pipe through a cable.