Laser dust detection device with reference gas chamber

Abstract

A laser dust detection device with a reference gas chamber comprises a support and a dust detector on the upper side of the support, the dust detector comprises a blocky main body, a through first channel is transversely formed in the main body, and the dust detector further comprises a switching block inserted in the main body in a sliding mode; a fourth channel and a fifth channel which can be alternately communicated with the first channel are arranged on the first channel in parallel in the sliding direction, a filter plate which can be inserted into the first channel is further connected to the position, corresponding to the fourth channel, of one side of the first channel, an air pump is further arranged at one end of the first channel, and the first channel is further provided with a laser dust meter; the fifth channel and the fourth channel can be communicated with the first channel and form a detection gas chamber and a reference gas chamber respectively, after the laser dust meter completes the detection work of the reference gas chamber, the detection result can be compared with the detection result of the detection gas chamber, whether the laser dust meter is polluted or not can be determined, or the polluted degree of the laser dust meter can be determined; therefore, a worker is reminded to clean in time, and the accuracy of an atmospheric dust concentration detection result every time is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical fields, concretely is a kind of laser dust detection device with reference gas chamber. BACKGROUND

[0002] Laser dust tester is the main instrument for detecting dust concentration in atmosphere, for example, patent library application No. CN201821805227.3 patent file discloses a kind of dust concentration automatic monitoring instrument, it includes sampling detection cavity and with its communication adsorption pump, by the adsorption pump can be inhaled into sampling detection cavity to atmosphere, inside the sampling detection cavity is also oppositely provided with laser emitter and laser receiver, wherein laser receiver can receive the scattering light or transmission light generated when laser beam meets particulate matter in air flow, finally convert optical signal into electrical signal, complete dust concentration detection work.

[0003] The dust concentration automatic monitoring instrument described above, although it is provided with a cleaning structure capable of cleaning the laser emitter and the laser receiver, but after long-time use of the cleaning mechanism, the cleaning effect will be obviously reduced, and this reduction cannot be predicted in advance by manual, which leads to uncertainty in the detection result of atmospheric dust concentration. UTILITY MODEL CONTENT

[0004] To solve the technical problems in the above background art, the utility model provides a kind of laser dust detection device with reference gas chamber.

[0005] The utility model technical scheme is as follows:

[0006] A kind of laser dust detection device with reference gas chamber, including support and its upper side dust detector, and by the dust detector can complete the detection work of dust concentration in atmosphere.

[0007] As the core technical concept of the utility model, the dust detector includes blocky main part, first passageway is horizontally provided on it;The dust detector further includes switching block that is slidably inserted in main part, fourth passageway and fifth passageway that can be alternatively communicated with first passageway are parallelly provided on it along sliding direction, and the position corresponding to fourth passageway on one side is further connected with filter plate that can be inserted into first passageway;The dust detector further includes laser dust measuring instrument arranged in the first passageway.

[0008] On the basis of the above structure, one end of the first channel is further provided with an air pump, when the fifth channel is penetrated with the first channel, the fifth channel serves as a detection gas chamber, the air pump can directly suck the atmosphere into its interior, and the detection of the dust concentration in the detection gas chamber is completed by the laser dust detector; when the fourth channel is penetrated with the first channel, the filter plate corresponding thereto can be inserted into the first channel, at this time the fourth channel serves as a reference gas chamber, when the air pump works to suck the atmosphere into its interior, the filter plate can effectively filter the dust in the atmosphere, after the detection of the dust concentration in the reference gas chamber is completed by the laser dust detector again, the results are compared with the dust concentration information detected in the detection gas chamber, whether the laser dust detector is contaminated or the degree of contamination can be determined, so as to remind the staff to clean in time, and the accuracy of the atmospheric dust concentration detection result each time is ensured.

[0009] The laser dust detection device with a reference gas chamber as described above, in order to enable the dust detector to more conveniently complete the switching work between the detection gas chamber and the reference gas chamber, the detection device (the laser dust detection device with a reference gas chamber as described above) further comprises a driving machine capable of driving the switching block to slide.

[0010] Further, in terms of the structure of the driving machine and the driving mode thereof, the filter plate and the switching block are further connected with a connecting plate, and the driving machine comprises a telescopic cylinder arranged along the sliding direction of the switching block and transmissionally connected with the connecting plate through a connecting piece.

[0011] Specifically, the middle part of the connecting plate is provided with an opening, the transmission end of the telescopic cylinder is arranged through the opening, and the connecting piece is in a cylindrical structure with one end closed and buckled on the transmission end of the telescopic cylinder, the closed end is fixed with the telescopic cylinder, and the open end is fixed with the connecting plate.

[0012] As a preferred embodiment, the telescopic cylinder comprises a cylinder body and a telescopic rod at one end of the cylinder body, the inner diameter of the connecting piece is arranged to be matched with the outer diameter of the cylinder body, and the cylinder body is arranged such that the telescopic rod at one end is always located in the connecting piece, so that the connecting piece can protect the telescopic cylinder under the premise of connecting and transmitting, prevent it from being polluted by dust, and ensure the smoothness of driving and service life.

[0013] The laser dust detection device with a reference gas chamber as described above, in terms of the structure of the support, specifically, it comprises a bottom plate and a support rod on the upper side of the bottom plate, the bottom plate is provided with a fixing hole, and the main body is arranged on the upper end of the support rod, and the detection device can be fixed at the detection position through the fixing hole on the bottom plate.

[0014] As a preferred embodiment, the length of the support rod is adjustable, so that the detection height of the dust detector is adjustable, which significantly improves the practicability and applicability of the detection device.

[0015] The utility model discloses a laser dust detection device with reference gas chamber, when the fifth channel and the first channel are through, the fifth channel is as detection gas chamber, and the air pump work can directly suck the atmosphere into its inside, and the detection work of atmospheric dust concentration in detection gas chamber is completed through laser dust measuring instrument, and when the fourth channel and the first channel are through, the filter plate corresponding to it can be inserted into the first channel, and the fourth channel is as reference gas chamber when the air pump work sucks the atmosphere into its inside, and the filter plate can effectively filter the dust in the atmosphere, and after the detection work of atmospheric dust concentration in reference gas chamber is completed through laser dust measuring instrument again, the result comparison is carried out with the atmospheric dust concentration information detected in detection gas chamber, whether the laser dust measuring instrument is contaminated or the contamination degree of the laser dust measuring instrument is determined, thereby reminding the staff to clean in time, and the accuracy of atmospheric dust concentration detection result is guaranteed every time. BRIEF DESCRIPTION OF DRAWINGS

[0016] The solutions and advantages of the present application will become clear to those ordinarily skilled in the art from the following detailed description of the preferred embodiments. The drawings are merely provided for the purpose of illustrating the preferred embodiments, and are not considered as limiting the present utility model.

[0017] In the drawings:

[0018] Figure 1 It is the structure schematic drawing of detection device in example;

[0019] Figure 2 It is the front view of Figure 1 ;

[0020] Figure 3 It is the structure schematic drawing of dust detector in example;

[0021] Figure 4 It is the structure schematic drawing of main body in example;

[0022] Figure 5 It is the structure schematic drawing of detection chamber converter in example;

[0023] Figure 6 It is the internal structure schematic drawing of Figure 3 ;

[0024] Figure 7 It is the state schematic drawing of dust detector in example as reference gas chamber;

[0025] Figure 8 It is the internal structure schematic drawing of Figure 7 ;

[0026] The components represented by the respective reference signs in the drawings are:

[0027] 1, support; 11, bottom plate; 12, support rod; 2, dust detector; 21, main body; 211, first channel; 212, second channel; 213, third channel; 22, detection chamber converter; 221, switching block; 2211, fourth channel; 2212, fifth channel; 222, filter plate; 2221, outer frame; 2222, filter screen; 223, connecting plate; 2231, opening; 23, air pump; 24, laser dust measuring instrument; 241, laser emitter; 242, photoelectric receiver; 3, drive machine; 31, telescopic air cylinder; 32, connecting piece. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings.

[0029] Embodiment

[0030] The present embodiment provides a laser dust detection device with a reference gas chamber, referring to Figure 1 and Figure 2 , comprising a support 1 and a dust detector 2 on the upper side thereof, and the dust concentration in the atmosphere can be detected through the dust detector 2. The structure of the detection device (the above-mentioned laser dust detection device with a reference gas chamber) will be described in detail below with reference to the accompanying drawings.

[0031] In the present embodiment, the structure of the support 1 specifically comprises a horizontally arranged bottom plate 11 and a vertically arranged support rod 12 on the upper side of the middle part thereof. The bottom plate 11 is provided with a fixing hole, and the dust detector 2 is arranged on the upper end of the support rod 12. The detection device can be fixed at the detection position through the fixing hole on the bottom plate 11.

[0032] As a preferred embodiment, the length of the support rod 12 is adjustable, so that the detection height of the dust detector 2 is adjustable, which significantly improves the practicability and applicability of the detection device.

[0033] In the present embodiment, as the core technical concept of the present utility model, in combination with Figure 3 , Figure 4 and Figure 6 , the structure of the dust detector 2 specifically comprises a block-shaped main body 21 arranged on the upper end of the support rod 12. The main body 21 is provided with a left-right through first channel 211 in the middle part thereof. The dust detector 2 further comprises a detection chamber converter 22 arranged on the main body 21, and a laser dust measuring instrument 24 arranged inside the first channel 211. One end of the first channel 211 is further provided with an air pump 23. The detection chamber converter 22 can complete the conversion between the detection gas chamber and the reference gas chamber. The air pump 23 can collect the atmosphere into the detection gas chamber / reference gas chamber, and the laser dust measuring instrument 24 can complete the detection of the dust concentration in the atmosphere.

[0034] Specifically, the body 21 is further provided with a second channel 212 longitudinally and vertically penetrating through the first channel 211, and a third channel 213 vertically penetrating through the first channel 211 from the upper end of the body 21 is further provided at one side of the second channel 212. On the basis of the structure of the body 21, the detection chamber converter 22 is combined with the body 21 Figure 5 The detection chamber converter 22 includes a switching block 221 vertically slidingly inserted into the second channel 212 of the body 21, and a fourth channel 2211 and a fifth channel 2212 vertically penetrating through the switching block 221 and alternately communicating with the first channel 211 are provided at the switching block 221. A filter plate 222 is further connected to one side of the switching block 221 corresponding to the position of the fourth channel 2211, and the filter plate 222 is inserted into the first channel 211 from the upper end of the third channel 213 when the switching block 221 slides downward to the position where the fourth channel 2211 communicates with the first channel 211. The laser dust detector 24 includes a laser emitter 241 and a photoelectric receiver 242 oppositely provided at both sides of the second channel 212.

[0035] On the basis of the above structure, the detection chamber converter 22 is combined with the body 21 Figure 7 and Figure 8 When the fifth channel 2212 communicates with the first channel 211, the fifth channel 2212 serves as a detection gas chamber, and the air pump 23 can directly suck the atmosphere into the detection gas chamber and detect the dust concentration in the detection gas chamber by the laser dust detector 24. When the fourth channel 2211 communicates with the first channel 211, the filter plate 222 corresponding to the fourth channel 2211 is inserted into the first channel 211. When the air pump 23 sucks the atmosphere into the reference gas chamber, the filter plate 222 can effectively filter the dust in the atmosphere. After the dust concentration in the reference gas chamber is detected by the laser dust detector 24, the detection result is compared with the detection result of the detection gas chamber, so as to determine whether the laser dust detector 24 is contaminated or the contamination degree, thereby reminding the staff to clean in time and ensuring the accuracy of the detection result of the dust concentration.

[0036] As a preferred embodiment, in order to ensure the cleanliness of the atmosphere in the reference gas chamber when the fourth channel 2211 communicates with the first channel 211 under the action of the air pump 23, the filter plate 222 includes an outer frame 2221 and a filter screen 2222 inside the outer frame 2221, and the filter screen 2222 is detachably connected to the outer frame 2221, so as to easily replace the filter screen 2222 after a period of use.

[0037] In this embodiment, in order to make the dust detector 2 more convenient to switch between the detection gas chamber and the reference gas chamber, the detection device further includes a driving machine 3 capable of driving the detection chamber converter 22 to act, and further driving the switching block 221 to vertically slide.

[0038] Furthermore, with regard to the structure of the driving machine 3 and its driving method, the filter plate 222 is vertically arranged on one side of the switching block 221, and a horizontally arranged connecting plate 223 is also connected between the upper end and the upper end of the switching block 221. The driving machine 3 includes a telescopic cylinder 31 arranged above the main body 21 along the sliding direction (vertical) of the switching block 221 and located between the upper ends of the second channel 212 and the third channel 213. The telescopic cylinder 31 is transmission-connected to the connecting plate 223 through a connecting member 32.

[0039] Specifically, an opening 2231 is provided in the middle of the connecting plate 223, and the transmission end (upper end) of the telescopic cylinder 31 is arranged through the opening 2231. The connecting piece 32 is a cylindrical structure with one end closed and buckled on the transmission end of the telescopic cylinder 31. The inner side of the closed end is fixed to the telescopic cylinder 31, and the open end is fixed to the outer circle of the opening 2231 on the connecting plate 223.

[0040] As a preferred embodiment, the telescopic cylinder 31 includes a cylinder body and a telescopic rod at one end (upper end) thereof. The inner diameter of the connecting member 32 is set to be compatible with the outer diameter of the cylinder body, and one end of the telescopic rod set in the cylinder body is always located in the connecting member 32, that is, when the switching block 221 rises to the fifth channel 2212 and connects with the first channel 211 under the action of the telescopic cylinder 31, the lower end of the connecting member 32 is still sleeved on the upper outer ring of the cylinder body, so that the connecting member 32 can protect the telescopic cylinder 31 while playing the role of connecting transmission, preventing it from being contaminated by dust, thereby ensuring its driving smoothness and service life.

Claims

1. A laser dust detection device with a reference gas chamber, characterized in that: It comprises a bracket (1) and a dust detector (2) on its upper side; The dust detector (2) comprises a block-shaped main body (21) on which a first through-going passage (211) is transversely opened; The dust detector (2) further comprises a switching block (221) slidably inserted on the main body (21), on which a fourth channel (2211) and a fifth channel (2212) capable of alternately communicating with the first channel (211) are arranged in parallel along the sliding direction, and a filter plate (222) capable of being inserted into the first channel (211) is also connected to a position corresponding to the fourth channel (2211) on one side; An air pump (23) is also provided at one end of the first channel (211); The dust detector (2) further includes a laser dust detector (24) arranged in the first channel (211).

2. The laser dust detection device with a reference gas chamber according to claim 1, characterized in that: It also includes a driving machine (3) capable of driving the switching block (221) to slide.

3. The laser dust detection device with a reference gas chamber according to claim 2, characterized in that: A connecting plate (223) is further connected between the filter plate (222) and the switching block (221); The driving machine (3) comprises a telescopic cylinder (31) arranged along the sliding direction of the switching block (221), which is transmission-connected to the connecting plate (223) via a connecting piece (32).

4. The laser dust detection device with a reference gas chamber according to claim 3, characterized in that: An opening (2231) is provided in the middle of the connecting plate (223), and the transmission end of the telescopic cylinder (31) is arranged through the opening (2231); The connecting piece (32) is a cylindrical structure with one end closed and buckled on the transmission end of the telescopic cylinder (31). The closed end is fixed to the telescopic cylinder (31) and the open end is fixed to the connecting plate (223).

5. The laser dust detection device with a reference gas chamber according to claim 4, characterized in that: The telescopic cylinder (31) comprises a cylinder body and a telescopic rod at one end thereof; the inner diameter of the connecting piece (32) is configured to match the outer diameter of the cylinder body, and one end of the telescopic rod provided in the cylinder body is always located in the connecting piece (32).

6. A laser dust detection device with a reference gas chamber according to any one of claims 1 to 5, characterized in that: The bracket (1) comprises a bottom plate (11) and a support rod (12) on its upper side; a fixing hole is provided on the bottom plate (11); and the main body (21) is arranged at the upper end of the support rod (12).

7. The laser dust detection device with a reference gas chamber according to claim 6, characterized in that: The length of the support rod (12) is adjustable.

Images