CN211877695U

CN211877695U - Optical path detection device of laser back scattering dust meter

Info

Publication number: CN211877695U
Application number: CN201922168882.3U
Authority: CN
Inventors: 兰治霖; 赵亚亭; 钱国龙; 徐先昌; 王卫平
Original assignee: Suzhou Mandrake Photoelectric Co ltd
Current assignee: Suzhou Mandrake Photoelectric Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-11-06
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses an optical path detection device of laser backscatter dust meter, including ring main part, optical path scale dial plate, protection lens, the front end at the ring main part is inlayed with protection lens to optical path scale dial plate, the rear end of ring main part and the flange end-to-end connection of dust meter, the side of ring main part is equipped with a plurality of second screw holes. The utility model provides a pair of optical path detection device of laser backscatter dust meter is a portable optical path detection device, makes things convenient for production debugging and witnessed inspections, and the precision is high, and application scope is wide, simple to operate.

Description

Optical path detection device of laser back scattering dust meter

Technical Field

The utility model relates to an optical path detection device of laser backscattering dust meter belongs to dust detection technical field.

Background

The laser scattering dust instrument detects the concentration of dust in the air by adopting an optical scattering principle, a laser emitting end and a laser receiving end are arranged in the instrument, when the laser scattering dust instrument works, the laser emitting end firstly aligns to a detection area to emit laser pulses, laser generates scattered light when encountering dust, part of the scattered light returns to the laser receiving end, the laser receiving end converts optical signals into electric signals, and information such as the intensity, pulse frequency, wavelength amplitude and the like of the scattered light in the electric signals is further analyzed by an analysis circuit to reflect the concentration condition of the dust in the air.

Before specific detection work is carried out, the laser optical path needs to be adjusted according to an actual measurement environment, in the prior art, the optical path is usually confirmed by simulating the distance of the actual detection environment such as the wall diameter of a real chimney by means of a special tool, the operation is troublesome, and the applicability is low.

SUMMERY OF THE UTILITY MODEL

The purpose is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides an optical path detection device of laser backscattering dust meter has solved laser scattering dust meter optical path debugging and has detected inconvenient problem.

The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides an optical path detection device of laser backscatter dust appearance, includes ring main part, optical path scale dial plate, protection lens, optical path scale dial plate and protection lens are inlayed at the front end of ring main part, the rear end of ring main part and the flange end-to-end connection of dust appearance, the side of ring main part is equipped with a plurality of second screw holes.

Furthermore, a first groove with an L-shaped section is formed in the inner side face of the front end of the circular ring main body, and a plurality of first threaded holes are formed in the end face of the front end of the circular ring main body; protection lens, optical path scale dial plate from outside to inside imbed in the first recess, insert the screw in the first screw hole, set up flat bullet pad between screw and the first screw hole, partly pressure of flat bullet pad is on the protection lens surface, and partly pressure is at the front end terminal surface of ring main part.

Furthermore, a second groove with a U-shaped section is formed in the rear end of the circular ring main body, the second groove is nested at the tail end of a flange of the dust meter, and a bolt is inserted into the second threaded hole.

Further, the protective lens is made of tempered glass.

Further, the optical path scale dial is made of circular cardboard.

Furthermore, the surface of the cardboard is marked with scale marks in the vertical direction and marks representing different optical paths.

Has the advantages that: the utility model provides a pair of optical path detection device of laser backscatter dust meter is a portable optical path detection device, makes things convenient for production debugging and witnessed inspections, and the precision is high, and application scope is wide, simple to operate.

Drawings

Fig. 1 is an assembly schematic diagram of the optical path detection device and the dust meter of the present invention;

FIG. 2 is an exploded view of the optical path detection device;

FIG. 3 is a schematic diagram of the front end of the optical path detection apparatus after the assembly;

FIG. 4 is a rear end view of the optical path detection apparatus after assembly;

FIG. 5 is a perspective view of the ring body;

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

fig. 7 is a schematic diagram of an optical path scale dial.

Detailed Description

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

As shown in fig. 2 to 4, an optical path detection device of a laser back scattering dust meter includes a ring main body 1, an optical path scale dial 2, and a protection lens 3.

As shown in fig. 5, a first groove 9 with an L-shaped cross section is formed in an inner side surface of the front end of the ring main body 1, at least two first threaded holes 6 are formed in the end surface of the front end of the ring main body 1, and the first threaded holes 6 are uniformly distributed in the end surface of the front end of the ring main body 1. Protection lens 3, optical path scale dial plate 2 are from outside to inside in the first recess 9 of embedding, insert screw 7 in the first screw hole 6, set up flat bullet pad 8 between screw 7 and the first screw hole 6, the partly pressure of flat bullet pad 8 is on protection lens 3 surface, and partly pressure is at the front end terminal surface of ring main part 1 to fix protection lens 3 and optical path scale dial plate 2 in cylinder main part 1.

The protective lens 3 is made of tempered glass.

The optical path scale dial 2 is made by circular cardboard, and cardboard thickness is 1mm, the cardboard is white cardboard, and laser beats and can form red facula on this cardboard.

The cardboard surface is marked with vertical scale lines and marks representing different optical paths, as shown in fig. 7. The side of the cardboard on which the graduation lines are drawn faces the protective lens.

As shown in fig. 6, at least two second threaded holes 4 are formed in the side surface of the circular ring main body 1, and the second threaded holes 4 are uniformly distributed in the side surface of the cylindrical main body 1; the rear end of the ring main body 1 is provided with a second groove 10 with a U-shaped cross section, the second groove 10 is nested at the tail end of a flange 12 of the dust meter 11, a bolt 5 is inserted into a second threaded hole 4, the bolt 5 is screwed up and abuts against the flange 12, so that the optical path detection device is fixed at the tail end of the flange, as shown in fig. 1, after the dust meter 11 is powered on and opened, the angle of an emitting end is adjusted, and light spots fall on a mark corresponding to a target optical path on the optical path scale dial 2.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an optical path detection device of laser backscatter dust meter which characterized in that: including ring main part, optical path scale dial plate, protection lens, optical path scale dial plate and protection lens are inlayed at the front end of ring main part, the rear end of ring main part and the flange end-to-end connection of dust appearance, the side of ring main part is equipped with two at least second screw holes.

2. The optical path detection device of a laser backscatter dust meter according to claim 1, wherein: the inner side surface of the front end of the circular ring main body is provided with a first groove with an L-shaped section, and the end surface of the front end of the circular ring main body is provided with at least two first threaded holes; protection lens, optical path scale dial plate from outside to in imbed first recess, insert the screw in the first screw hole, set up flat bullet pad between screw and the first screw hole, partly pressure of flat bullet pad is on the protection lens surface, and partly pressure is at the front end terminal surface of ring main part.

3. The optical path detection device of a laser backscatter dust meter according to claim 1, wherein: the rear end of the circular ring main body is provided with a second groove with a U-shaped section, the second groove is nested at the tail end of a flange of the dust meter, and a bolt is inserted into the second threaded hole.

4. The optical path detection device of a laser backscatter dust meter according to claim 1, wherein: the protective lens is made of tempered glass.

5. The optical path detection device of a laser backscatter dust meter according to claim 1, wherein: the optical path scale dial is made of a round cardboard.

6. The optical path detection device of a laser backscatter dust meter according to claim 5, wherein: the surface of the cardboard is marked with scale lines in the vertical direction and marks representing different optical paths.