CN216558725U - Explosion-proof magnetic non-contact displacement sensor - Google Patents

Abstract

The utility model discloses an explosion-proof magnetic non-contact displacement sensor, which relates to the technical field of displacement sensors and comprises a shell and a circuit board, wherein the circuit board is arranged inside the shell, reed pipes are uniformly distributed and arranged on the circuit board, the front end and the rear end of the outside of the shell are respectively and fixedly provided with a front end cover and a rear end cover, a through hole is formed in the middle of the rear end cover, a lead is arranged in the rear end cover, the lead is electrically connected with the circuit board, and a sliding block is arranged at the upper end of the outside of the shell. The utility model adopts the magnetic induction principle, converts the mechanical displacement of the equipment to be detected into an electrical signal by adopting a non-contact design through the magnetic slide block, and the signal can be in direct proportion to the mechanical displacement. This patent adopts the non-contact design, is different from traditional brush contact displacement sensor, has that the displacement output is more accurate, sealed effect is more ideal and avoid traditional displacement sensor to use the problem of brush wearing and tearing for a long time.

Description

Explosion-proof magnetic non-contact displacement sensor

Technical Field

The utility model relates to the technical field of displacement sensors, in particular to an explosion-proof magnetic non-contact displacement sensor.

Background

The displacement sensor is also called as linear sensor, and is a linear device belonging to induction, and the sensor is used for converting various measured physical quantities into electric quantities. The measurement of displacement generally divide into and measures physical size and mechanical displacement two kinds, displacement sensor can all be used in the mill in different fields at present, because the kind is also very many, technical staff can choose according to the in service behavior of reality and purchase, the customer of our company service in the storehouse bulk grain transportation still more, because many electrical components of dust all adopt explosion-proof type, to the special condition at scene, my company technical staff is through the design, explosion-proof type magnetism non-contact displacement sensor has been developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an explosion-proof magnetic non-contact displacement sensor to solve the problem of explosion-proof sealing in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: explosion-proof type magnetism non-contact displacement sensor, including casing and circuit board, the circuit board is installed in the inside of casing, evenly distributed installs tongue tube (1 word is arranged) on the circuit board, the outside front and back end of casing fixed mounting respectively has front end housing and rear end housing, be equipped with the through-hole in the middle of the rear end housing and be equipped with the wire, wire and circuit board electric connection, the slider is installed to the outside upper end of casing.

Preferably, the following components: the top of casing is equipped with T shape slide, the slider is installed on T shape slide, magnet is installed to the slider lower extreme, there is the bulb seat top of slider through threaded connection, the right side fixed mounting of bulb seat has the traction link, and the other end is installed on the moving part.

Preferably: the rear lower part of casing is equipped with two recesses, installs the stationary dog in the recess, the stationary dog can freely slide in the recess, stationary dog cross-section C shape is equipped with the mounting hole in the middle of, presss from both sides tightly through the extrusion of installation screw and recess cooperation and fixes the casing, the stationary dog is equipped with two at least.

Preferably: and sealing gaskets are arranged between the contact positions of the front end cover and the rear end cover with the shell respectively, so that the sealing property is further improved.

Preferably: and a sealing ring is arranged between the lead and the rear end cover, so that the sealing property is enhanced.

Preferably: the shell is made in an integrated forming mode, the preferred material is anodized aluminum, forming is fast, and the shell is suitable for batch manufacturing.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the magnetic induction principle, converts the mechanical displacement of the equipment to be detected into an electrical signal by adopting a non-contact design through the magnetic slide block, and the signal can be in direct proportion to the mechanical displacement. This patent adopts the non-contact design, is different from traditional brush contact displacement sensor, has that the displacement output is more accurate, sealed effect is more ideal and avoid traditional displacement sensor to use the problem of brush wearing and tearing for a long time, more specific has following advantage:

1) non-contact design: the displacement measurement of the sensor is realized by using the magnetic slide block which can move along the guide rail, so that the mechanical abrasion and the measurement error can be effectively avoided;

2) a closed housing structure: the core sensing element of the sensor is hermetically encapsulated in an aluminum shell, and does not generate friction movement with the outside, the protection grade can reach IP66, the installation space is saved, and the sensor also has the advantages of pollution resistance and durability;

3) the anti-interference capability is strong: the output signal is in a 4-20 mA current output type, has high anti-interference capacity and is suitable for occasions with large power grid interference in a long-distance transmission or use environment;

4) excellent explosion-proof property: the dust explosion-proof certification is provided, and the method can be applied to complex explosion-proof occasions such as port bulk grain and coal.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic sectional view A-A;

FIG. 5 is a schematic cross-sectional view B-B;

FIG. 6 is an enlarged view of the point C

Fig. 7 is a simplified diagram of relative movement.

In the figure: 1. the device comprises a shell, 2, a front end cover, 3, a sliding block, 4, a rear end cover, 5, a sealing ring, 6, a lead, 7, a ball seat, 8, a traction connecting rod, 9, a T-shaped slideway, 10, a fixed clamp, 11, a reed pipe, 12 and a circuit board.

Detailed Description

The present invention will hereinafter be described based on embodiments with reference to the drawings in the embodiments of the present invention, but it should be noted that the present invention is not limited to these embodiments, and in the following detailed description of the present invention, some specific details are described in detail, however, for those parts not described in detail, the present invention can be fully understood by those skilled in the art.

Furthermore, those skilled in the art will appreciate that the drawings are provided for purposes of illustrating the objects, features, and advantages of the present disclosure and are not necessarily to scale.

Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".

Referring to fig. 1-6, the present invention provides a technical solution: including casing 1 and circuit board 12, circuit board 12 installs in the inside of casing 1, evenly distributed installs tongue tube 11 on circuit board 12, fixed mounting has front end housing 2 and rear end housing 4 respectively before the outside of casing 1, be equipped with the through-hole in the middle of the rear end housing 4 and be equipped with wire 6, wire 6 and circuit board 12 electric connection, slider 3 is installed to the outside upper end of casing 1.

The top of casing 1 is equipped with T shape slide 9, slider 3 is installed on T shape slide 9, magnet is installed to 3 lower extremes of slider, there is bulb seat 7 slider 3's top through threaded connection, the right side fixed mounting of bulb seat 7 has traction connecting rod 8.

The rear lower part of casing 1 is equipped with two recesses, installs fixed clamp 10 in the recess, fixed clamp 10 can freely slide in the recess, fixed clamp 10 cross-section C shape, the centre is equipped with the mounting hole, fixed clamp 10 is equipped with two at least.

And sealing gaskets are arranged between the contact parts of the front end cover 2 and the rear end cover 4 with the shell 1 respectively.

And a sealing ring 5 is arranged between the lead 6 and the rear end cover 4.

The shell 1 is made of an integral forming material, and the preferred material is anodized aluminum.

When the device is used, the fixed clamp 10 is arranged at a proper position, the fixed clamp 10 can freely slide in a groove in the shell 1 and is convenient to install, the fixed clamp 10 can be increased to increase the stability of the shell, then the sliding block 3 is connected with a monitored part through the traction connecting rod 8, the ball socket 7 has a certain degree of freedom and is convenient to install, then the lead 6 is connected with control equipment, the principle process is not repeated, the precision can be improved by increasing the density of the reed switch 11, or the correction can be carried out through a software algorithm, the relative movement mode of the reed switch and the magnet is shown in figure 7,

the moving direction of the magnet is vertical to the length direction of the reed switch, and the crossed point (or the vertical crossed point) is just the contact sensing position.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Explosion-proof type magnetism non-contact displacement sensor, including casing (1) and circuit board (12), its characterized in that: the inside at casing (1) is installed in circuit board (12), evenly distributed installs tongue tube (11) on circuit board (12), the outside front and back end of casing (1) is fixed mounting respectively has front end housing (2) and rear end housing (4), be equipped with the through-hole in the middle of rear end housing (4) and be equipped with wire (6), wire (6) and circuit board (12) electric connection, slider (3) are installed to the outside upper end of casing (1).

2. The explosion-proof magnetic non-contact displacement sensor of claim 1, wherein: the top of casing (1) is equipped with T shape slide (9), install on T shape slide (9) slider (3), magnet is installed to slider (3) lower extreme, there is bulb seat (7) top of slider (3) through threaded connection, the right side fixed mounting of bulb seat (7) has traction connecting rod (8).

3. The explosion-proof magnetic non-contact displacement sensor of claim 1, wherein: the rear lower part of casing (1) is equipped with two recesses, installs stationary gripper (10) in the recess, stationary gripper (10) can freely slide in the recess, stationary gripper (10) cross-section C shape, the centre is equipped with the mounting hole, stationary gripper (10) are equipped with two at least.

4. The explosion-proof magnetic non-contact displacement sensor of claim 1, wherein: and sealing gaskets are arranged between the contact parts of the front end cover (2) and the rear end cover (4) and the shell (1) respectively.

5. The explosion-proof magnetic non-contact displacement sensor of claim 1, wherein: and a sealing ring (5) is arranged between the lead (6) and the rear end cover (4).

6. The explosion-proof magnetic non-contact displacement sensor of claim 1, wherein: the shell (1) is made of anodic aluminum oxide in an integrated forming mode.

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