CN216594665U - Novel laser smoke detector - Google Patents

Abstract

The utility model relates to the technical field of smoke detection devices, and particularly discloses a novel laser smoke detector, wherein a reflector component comprises a rotary column, a first reflector and a second reflector at the bottom of the rotary column, a first reflecting hole and a second reflecting hole are respectively arranged at the other end of the top surface of a base block, which corresponds to a laser direct-injection channel and a first reflecting channel, along the vertical direction, a second reflecting channel is arranged between the intersection point of the first reflecting hole and the laser direct-injection channel and the intersection point of the second reflecting hole and the first reflecting channel, the rotary column is respectively rotatably sleeved on the first reflecting hole, the second reflector in the first reflecting hole reflects part of laser to the bottom of the first reflecting hole, the first reflector in the first reflecting hole and the second reflecting hole is used for reflecting the laser to the detection port, a smoke input channel is arranged at the axis position of the input cylinder, and a clean air input channel is arranged at the periphery of the smoke input channel; the problems of short service life, low detection stability and low efficiency of the laser smoke detector are solved.

Description

Novel laser smoke detector

Technical Field

The utility model relates to the technical field of smoke detection devices, in particular to a novel laser smoke detector.

Background

The laser smoke detector is one of the methods for detecting the components and concentration of gaseous pollutants in gas by a smoke on-line detection system, and mainly adopts the extraction forward scattering principle, and a stable light path system is formed by a laser, a receiver, a filter lens and a reflector. When the smoke dust detector is used, pure air is filled for zero calibration, then smoke gas is filled, scattering is generated in a range of 35 degrees after the smoke dust is irradiated by laser beams, scattered light passes through the filter plate and the optical fiber line and is transmitted to the detector for detection and analysis, and a corresponding numerical value is measured.

However, the conventional laser smoke detector has a short life due to erosion of dust-containing smoke, and the operations of zero calibration and calibration are complicated, thereby affecting the efficiency and stability of detection.

SUMMERY OF THE UTILITY MODEL

The utility model designs a novel laser smoke detector aiming at solving the problems of short service life, low detection stability and low efficiency of the laser smoke detector in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel laser smoke detector comprises a base block and a laser emission module, wherein an input cylinder and an output cylinder are respectively inserted into the top end and the bottom end of a central cavity of the base block, a laser direct-injection channel and a first reflection channel which are vertically crossed with a vertical central line of the base block are arranged in the base block, an included angle between the first reflection channel and the laser direct-injection channel is 35 degrees, the laser emission module is sleeved at one end of the laser direct-injection channel, one end, far away from the laser emission module, of the first reflection channel is sleeved with a detection port, the novel laser smoke detector further comprises a reflector assembly, the reflector assembly comprises a rotary column, a first reflector and a second reflector, the first reflector and the second reflector are fixed at the bottom of the rotary column, a first reflection hole and a second reflection hole are respectively formed in the positions, corresponding to the other ends of the laser direct-injection channel and the first reflection channel, along the vertical direction, first reflection hole with the crossing point of the direct channel of laser extremely the second reflects the hole with be provided with the second reflection passageway between the crossing point of first reflection passageway, the column spinner rotates respectively cup joint in the top of first reflection hole and second reflection hole, the bottom of column spinner is located respectively the both ends department of second reflection passageway, in the first reflection hole the second reflector be used for with the partial laser reflection of laser emission module transmission extremely the bottom of first reflection hole, in first reflection hole and the second reflection hole the first reflector be used for with the laser reflection of laser emission module transmission extremely detection port department, the axle center position of input barrel is provided with flue gas input channel, and flue gas input channel's periphery is provided with the empty gas input channel.

Preferably, the top at input barrel center is pegged graft and is had the flue gas input tube, the lateral wall at input barrel top is pegged graft and is had headroom gas input tube, the inner end of headroom gas input tube with the inner chamber intercommunication of input barrel, the center of input barrel bottom is seted up and is had a hole, solid fixed ring is equipped with to end hole endotheca, gu fixed ring's center has cup jointed the center tube, the top of center tube with the butt joint of the bottom of flue gas input tube, end hole and center tube's bottom all extend to the top in base block central cavity, gu fixed ring's top surface has evenly seted up a plurality of air vents along circumference.

Preferably, the bottom end of the input cylinder is in threaded sleeve connection with the center of the top of the base block.

Preferably, the output port is sleeved at the center of the bottom surface of the output cylinder.

Preferably, the inner diameters of the laser direct-irradiating channel, the first reflecting channel and the second reflecting channel are the same.

Compared with the prior art, the utility model has the beneficial effects that:

1. the laser smoke detector provided by the utility model is convenient for forming a net air protective gas film at the periphery of dust-containing gas, so that the loss of the dust-containing smoke to equipment is improved, and the service life of the equipment is prolonged.

2. The laser smoke detector provided by the utility model is convenient for adjusting the positions of the first reflector and the second reflector through the rotation of the rotary column, so that the detection state and the calibration state of the device can be flexibly switched; the second reflector is convenient for forming calibration light; the first reflector is convenient for reflecting redundant laser out of the bottom of the first reflecting hole during detection, so that the detection stability is improved.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic bottom view of the present invention;

fig. 4 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

In the figure: 1-a base block; 11-laser direct path; 12-a first reflective channel; 13-a second reflective channel; 14-a detection port; 15-a first reflective aperture; 16-a second reflective aperture;

2-inputting the cylinder; 21-a central tube; 22-flue gas input pipe; 23-clear air input pipe; 24-bottom jack; 25-a fixed ring;

3, outputting the cylinder; 31-output port;

4-a mirror assembly; 41-spin columns; 42-a first mirror; 43-a second mirror;

5-laser emission module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a novel laser smoke detector, including a base block 1 and a laser emission module 5, wherein the top end and the bottom end of the central cavity of the base block 1 are respectively inserted with an input cylinder 2 and an output cylinder 3, the base block 1 is provided with a direct laser path 11 and a first reflection path 12 which are vertically intersected with the vertical central line thereof, the included angle between the first reflection path 12 and the direct laser path 11 is 35 °, the laser emission module 5 is sleeved at one end of the direct laser path 11, one end of the first reflection path 12 far away from the laser emission module 5 is sleeved with a detection port 14, the novel laser smoke detector also includes a reflector assembly 4, the reflector assembly 4 includes a rotary column 41 and a first reflective mirror 42 and a second reflective mirror 43 which are fixed at the bottom of the rotary column 41, the positions of the top surface of the base block 1 corresponding to the other ends of the direct laser path 11 and the first reflection path 12 are respectively provided with a first reflection hole 15 and a second reflection hole 16 along the vertical direction, a second reflection channel 13 is arranged between the intersection point of the first reflection hole 15 and the laser direct-emitting channel 11 and the intersection point of the second reflection hole 16 and the first reflection channel 12, the rotary column 41 is respectively rotatably sleeved at the top ends of the first reflection hole 15 and the second reflection hole 16, the bottom end of the rotary column 41 is respectively positioned at two ends of the second reflection channel 13, the second reflector 43 in the first reflection hole 15 is used for reflecting part of laser emitted by the laser emission module 5 to the bottom of the first reflection hole 15, the first reflector 42 in the first reflection hole 15 and the second reflection hole 16 is used for reflecting the laser emitted by the laser emission module 5 to the detection port 14, a smoke input channel is arranged at the axial position of the input cylinder 2, and a gas input channel is arranged on the periphery of the smoke input channel in a clearance manner.

In this embodiment, the top at input barrel 2 center is pegged graft and is had flue gas input tube 22, the lateral wall at input barrel 2 top is pegged graft and is had headroom gas input tube 23, the inner end of headroom gas input tube 23 and the inner chamber intercommunication of input barrel 2, the center of input barrel 2 bottom is seted up end jack 24, end jack 24 endotheca is equipped with solid fixed ring 25, gu fixed ring 25's center has cup jointed center tube 21, the top of center tube 21 and the butt joint of the bottom of flue gas input tube 22, end jack 24 and center tube 21's bottom all extend to the top of base block 1 central cavity, gu fixed ring 25's top surface has evenly seted up a plurality of air vents along circumference.

In this embodiment, the bottom end of the input cylinder 2 is screwed to the center of the top of the base block 1.

In this embodiment, an output port 31 is sleeved at the center of the bottom surface of the output cylinder 3.

In this embodiment, the inner diameters of the laser direct path 11, the first reflecting path 12 and the second reflecting path 13 are the same.

The working principle is as follows: the dust-containing flue gas pipeline is connected with the flue gas input pipe 22, the pure air pipeline is connected with the clean gas input pipe 23, and the dust-containing flue gas flows to the intersection point of the central cavity of the base block 1 and the laser direct-injection channel 11 through the central pipe 21 from the flue gas input pipe 22 to be detected and then is discharged through the output cylinder 3 and the output port 31; pure air enters the inner cavity of the input cylinder 2 through the net air input pipe 23, then flows downwards through the annular cavity between the bottom jack 24 and the central pipe 21, forms a protective air film at the periphery of dust-containing flue gas at the central cavity of the base block 1, and is finally discharged through the output cylinder 3 and the output port 31 together with the dust-containing flue gas; when pure air flows through the annular cavity between the bottom plug hole 24 and the central tube 21, the pure air passes through the vent hole formed in the top surface of the fixing ring 25;

the detection port 14 is connected to a detection instrument, when the dust-containing flue gas flows through the intersection point of the central cavity of the base block 1 and the laser direct-injection channel 11, the laser beam emitted by the laser emission module 5 irradiates the dust-containing flue gas and generates scattering in the range of 35 degrees, and the scattered light is transmitted to the detection instrument connected to the detection port 14 through the first reflection channel 12 for detection and analysis; the redundant laser is reflected by the second reflector 43 in the first reflecting hole 15 and then emitted from the bottom of the first reflecting hole 15; during the zero calibration and calibration, the rotating column 41 needs to be rotated first, so that the first reflected light 42 in the first reflecting hole 15 and the first reflected light 42 in the second reflecting hole 16 are respectively located at the reflecting positions, at this time, the laser beam emitted by the laser emitting module 5 is firstly reflected by the first reflecting mirror 42 in the first reflecting hole 15 and is irradiated on the first reflecting mirror 42 in the second reflecting hole 16 along the second reflecting channel 13, and the laser beam is irradiated on the detection port 14 along the first reflecting channel 12 through the reflecting action of the first reflecting mirror 42, so as to complete the zero calibration and calibration through the detection instrument, wherein the reflecting line of the laser beam during the zero calibration and the calibration is the line shown by the dotted line in fig. 3.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (5)

1. The utility model provides a novel laser smoke and dust detector, includes base block (1) and laser emission module (5), the top and the bottom of base block (1) central cavity are pegged graft respectively and are had input barrel (2) and output barrel (3), be provided with in base block (1) and penetrate passageway (11) and first reflection passageway (12) with the perpendicular crossing laser of its vertical central line, and the contained angle between passageway (11) is penetrated directly to first reflection passageway (12) and laser is 35, laser emission module (5) suit in the one end of passageway (11) is penetrated directly to laser, first reflection passageway (12) are kept away from in the one end cover of laser emission module (5) is equipped with detection port (14), its characterized in that:

the laser reflection device is characterized by further comprising a reflector component (4), wherein the reflector component (4) comprises a rotating column (41) and a first reflector (42) and a second reflector (43) which are fixed at the bottom of the rotating column (41), a first reflection hole (15) and a second reflection hole (16) are respectively formed in the positions, corresponding to the other ends of the laser direct projection channel (11) and the first reflection channel (12), of the top surface of the base block (1) along the vertical direction, and a second reflection channel (13) is arranged between the intersection point of the first reflection hole (15) and the laser direct projection channel (11) and the intersection point of the second reflection hole (16) and the first reflection channel (12);

the column spinner (41) rotate respectively cup joint in the top in first reflection hole (15) and second reflection hole (16), the bottom of column spinner (41) is located respectively the both ends department of second reflection passageway (13), in first reflection hole (15) second reflector (43) be used for with the partial laser reflection of laser emission module (5) transmission extremely the bottom in first reflection hole (15), in first reflection hole (15) and second reflection hole (16) first reflector (42) are used for with the laser reflection of laser emission module (5) transmission extremely detection port (14) department, the axle center position of input barrel (2) is provided with flue gas input channel, and the periphery of flue gas input channel is provided with gas headroom input channel.

2. The novel laser smoke detector as claimed in claim 1, wherein: the top at the center of the input cylinder body (2) is spliced with a smoke input pipe (22), the side wall at the top of the input cylinder body (2) is spliced with a clean air input pipe (23), the inner end of the clean air input pipe (23) is communicated with the inner cavity of the input cylinder body (2), a bottom insertion hole (24) is formed in the center of the bottom of the input cylinder body (2), a fixing ring (25) is sleeved in the bottom insertion hole (24), a central pipe (21) is sleeved at the center of the fixing ring (25), the top of the central pipe (21) is in butt joint with the bottom of the smoke input pipe (22), the bottom insertion hole (24) and the bottom of the central pipe (21) both extend to the top of the central cavity of the base block (1), and a plurality of vent holes are uniformly formed in the top surface of the fixing ring (25) along the circumferential direction.

3. The novel laser smoke detector as claimed in claim 2, wherein: the bottom end of the input cylinder (2) is in threaded sleeve connection with the center of the top of the base block (1).

4. The novel laser smoke detector as claimed in claim 1, wherein: an output port (31) is sleeved at the center of the bottom surface of the output cylinder body (3).

5. The novel laser smoke detector as claimed in claim 1, wherein: the inner diameters of the laser direct-emitting channel (11), the first reflecting channel (12) and the second reflecting channel (13) are the same.

Images