Laser particulate matter sensor with dustproof mechanism

Abstract

The utility model belongs to the technical field of laser particulate matter sensors, and particularly relates to a laser particulate matter sensor with a dustproof mechanism, which comprises a main body, the main body comprises a shell, a first through hole is formed in the surface of the shell, a connecting hole is formed in the inner wall of the shell, a moving mechanism is mounted in the connecting hole, and the moving mechanism comprises a first convex block; the surface of the first protruding block is movably connected with the inner wall of the connecting hole, the back face of the first protruding block is fixedly connected with a moving plate, the front face of the moving plate is provided with a fourth groove, the inner wall of the fourth groove is fixedly connected with a spring, the tail end of the spring is fixedly connected with a sealing block, and the front face of the moving plate is fixedly connected with a second protruding block. Push rods are fixedly connected to the front faces of the second protruding blocks. The movable plate slides to enable the sealing block to close the first through hole, external dust is prevented from entering, and the working efficiency of the sealing device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser particle sensors, in particular to a laser particle sensor with a dustproof mechanism. Background Art

[0002] Real-time optical particle counters (OPCs) can be used for air quality monitoring. These instruments are based on different optical principles - usually scattering or absorption, with light scattering being the most common. In an OPC, particles scatter (or absorb) incident light from a light source (usually a laser beam).

[0003] The scattered light is detected by the photodiode and converted into real-time particle counts and mass concentration values. The interfaces and openings of existing laser particle sensors are exposed to the outside world for a long time, especially the openings. If dust enters the interior of the device due to long-term exposure, it may affect the accuracy of the next measurement. The interior of the device needs to be cleaned, which reduces the working efficiency of the device. Summary of the invention

[0004] The purpose of the utility model is to provide a laser particle sensor with a dustproof mechanism, which closes the first through hole of the sealing block by sliding a movable plate to prevent external dust from entering, thereby improving the working efficiency of the utility model; the first connecting plate and the second connecting plate can be plugged back into the second groove after the third protrusion is pulled out, thereby improving the practicality of the utility model.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a laser particle sensor with a dustproof mechanism, including a main body, the main body including a shell, the surface of the shell is provided with a first through hole, the inner wall of the shell is provided with a connecting hole, a moving mechanism is installed inside the connecting hole, the moving mechanism includes a first protrusion, the surface of the first protrusion is movably connected to the inner wall of the connecting hole, the back side of the first protrusion is fixedly connected to a moving plate, the front side of the moving plate is provided with a fourth groove, the inner wall of the fourth groove is fixedly connected to a spring, the end of the spring is fixedly connected to a sealing block, the front side of the moving plate is fixedly connected to a second protrusion, and the front side of the second protrusion is fixedly connected to a push rod.

[0006] Optionally, the second protrusion is located on the left side of the first protrusion, and the back side of the push rod is in contact with the surface of the housing.

[0007] Optionally, a rotating mechanism is installed inside the shell, and the rotating mechanism includes a support rod, one end of the support rod is fixedly connected to the inner wall of the shell, the end of the support rod is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating shaft, and the surface of the rotating shaft is fixedly connected to fan blades.

[0008] Optionally, a first groove is provided on the surface of the shell, an external connection end is fixedly connected to an inner wall of the first groove, and a second groove is provided on the surface of the shell, and the second groove is located above the external connection end.

[0009] Optionally, a telescopic mechanism is installed inside the second groove, and the telescopic mechanism includes a first connecting plate, and a surface of the first connecting plate is movably connected to an inner wall of the second groove.

[0010] Optionally, the front side of the first connecting plate is movably connected to the second connecting plate, the left and right side surfaces of the second connecting plate are fixedly connected to third protrusions, the upper surface of the first groove is provided with a third groove, and the third protrusion is located inside the third groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model is provided with a moving plate, a spring and a sealing block. When the utility model is not needed, the push rod on the surface of the shell is pushed to the right, the second protrusion fixed on the back of the push rod moves to the right, and the moving plate fixedly connected to the second protrusion and located inside the shell moves to the right accordingly, until it moves to the rear of the first through hole provided in the shell, and the front of the moving plate is provided with a fourth groove, and the spring installed inside the fourth groove lifts the sealing block so that the sealing block blocks the first through hole to prevent the entry of external dust; when detection is required, the push rod is pushed to the left, and the sealing block returns to the left side of the shell with the moving plate. The utility model enables the sealing block on the moving plate to close the first through hole by sliding the moving plate to prevent the entry of external dust, thereby improving the working efficiency of the utility model.

[0013] The utility model is provided with a first connecting plate, a second connecting plate and a third protrusion. When the utility model is not needed to be used, the second connecting plate is pulled out from the second groove, so that the first connecting plate movably connected at one end of the second connecting plate is also pulled out. When the connection between the second connecting plate and the first connecting plate is bent, the third protrusions fixed on the left and right sides of the second connecting plate are inserted into the third groove, so that the angle between the first connecting plate and the second connecting plate is 90 degrees, and the external connection end in the first groove is protected in a semi-enclosed state; when the utility model needs to be used, the third protrusion is pulled out and the first connecting plate and the second connecting plate are plugged back into the second groove, thereby improving the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0016] Figure 2 This is a schematic diagram of the third perspective structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0018] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model from a third viewing angle;

[0020] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0021] In the figure: 1. main body; 101. shell; 102. first through hole; 103. first groove; 104. external terminal; 105. connecting hole; 106. second groove; 107. third groove; 2. rotating mechanism; 201. support rod; 202. motor; 203. rotating shaft; 204. fan blade; 3. moving mechanism; 301. moving plate; 302. first protrusion; 303. second protrusion; 304. push rod; 305. fourth groove; 306. spring; 307. sealing block; 4. telescopic mechanism; 401. first connecting plate; 402. second connecting plate; 403. third protrusion. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] Reference Figure 1-6Now, a laser particle sensor with a dustproof mechanism provided in an embodiment of the utility model is described. A laser particle sensor with a dustproof mechanism comprises a main body 1, the main body 1 comprises a shell 101, a first through hole 102 is formed on the surface of the shell 101, a connecting hole 105 is formed on the inner wall of the shell 101, an elastic silicone sheet is fixedly connected to the inner wall of the connecting hole 105, so as to ensure that a first protrusion 302 and a second protrusion 303 can move inside the connecting hole 105, and dust will not enter the interior of the device through the connecting hole 105, a moving mechanism 3 is installed inside the connecting hole 105, the moving mechanism 3 comprises a first protrusion 302, a surface of the first protrusion 302 is movably connected to the inner wall of the connecting hole 105, a moving plate 301 is fixedly connected to the back side of the first protrusion 302, a fourth groove 305 is formed on the front side of the moving plate 301, a spring 306 is fixedly connected to the inner wall of the fourth groove 305, a sealing block 307 is fixedly connected to the end of the spring 306, a second protrusion 303 is fixedly connected to the front side of the moving plate 301, and a push rod 304 is fixedly connected to the front side of the second protrusion 303. When the utility model is not needed to be used, the push rod 304 on the surface of the shell 101 is pushed to the right, and the second protrusion 303 fixed on the back of the push rod 304 moves to the right, and the movable plate 301 located inside the shell 101, which is fixedly connected to the second protrusion 303, moves to the right accordingly, until it moves to the rear of the first through hole 102 opened in the shell 101, and a fourth groove 305 is opened on the front of the movable plate 301, and the spring 306 installed inside the fourth groove 305 lifts the sealing block 307 so that the sealing block 307 blocks the first through hole 102 to prevent external dust from entering; when detection is required, the push rod 304 is pushed to the left, and the sealing block 307 returns to the left side of the shell 101 with the movable plate 301, and the sealing block 307 on the movable plate 301 closes the first through hole 102 by sliding the movable plate 301 to prevent external dust from entering, thereby improving the working efficiency of the utility model.

[0027] The second protrusion 303 is located on the left side of the first protrusion 302, the back of the push rod 304 is in contact with the surface of the shell 101, and a rotating mechanism 2 is installed inside the shell 101. The rotating mechanism 2 includes a support rod 201, one end of the support rod 201 is fixedly connected to the inner wall of the shell 101, the end of the support rod 201 is fixedly connected to the motor 202, the output end of the motor 202 is fixedly connected to the shaft 203, the surface of the shaft 203 is fixedly connected to the fan blade 204, the surface of the shell 101 is provided with a first groove 103, and the inner wall of the first groove 103 is fixedly connected to the external end 104. A second groove 106 is provided on the surface of the housing 101, and the second groove 106 is located above the external connection end 104. A telescopic mechanism 4 is installed inside the second groove 106, and the telescopic mechanism 4 includes a first connecting plate 401. The surface of the first connecting plate 401 is movably connected to the inner wall of the second groove 106, and the front of the first connecting plate 401 is movably connected to the second connecting plate 402, and the left and right side surfaces of the second connecting plate 402 are fixedly connected with third protrusions 403. A third groove 107 is provided on the upper surface of the first groove 103, and the third protrusion 403 is located inside the third groove 107. When the utility model is not needed to be used, the second connecting plate 402 is pulled out from the second groove 106, so that the first connecting plate 401 movably connected at one end of the second connecting plate 402 is also pulled out, and when the connection between the second connecting plate 402 and the first connecting plate 401 is bent, the third protrusions 403 fixed on the left and right sides of the second connecting plate 402 are inserted into the third groove 107, so that the angle between the first connecting plate 401 and the second connecting plate 402 is 90 degrees, and the external connection end 104 in the first groove 103 is protected in a semi-enclosed state; when the utility model needs to be used, the third protrusion 403 is pulled out and the first connecting plate 401 and the second connecting plate 402 are plugged back into the second groove 106, thereby improving the practicality of the utility model.

[0028] Working principle: When the utility model is not needed to be used, the push rod 304 on the surface of the shell 101 is pushed to the right, and the second protrusion 303 fixed on the back of the push rod 304 moves to the right, and the movable plate 301 located inside the shell 101 and fixedly connected to the second protrusion 303 moves to the right accordingly, until it moves to the rear of the first through hole 102 opened in the shell 101, and a fourth groove 305 is opened on the front of the movable plate 301, and the spring 306 installed in the fourth groove 305 lifts the sealing block 307, so that the sealing block 307 blocks the first through hole 102 to prevent the outside dust from entering; when the detection is needed, the push rod 304 is pushed to the left, and the sealing block 307 returns to the left side of the shell 101 with the movable plate 301, and the sealing block 307 on the movable plate 301 blocks the first through hole 102 by sliding the movable plate 301 Close to prevent external dust from entering, thereby improving the working efficiency of the utility model; when the utility model is not needed, the second connecting plate 402 is pulled out from the second groove 106, so that the first connecting plate 401 movably connected at one end of the second connecting plate 402 is also pulled out, and when the connection between the second connecting plate 402 and the first connecting plate 401 is bent, the third protrusions 403 fixed on the left and right sides of the second connecting plate 402 are inserted into the third groove 107, so that the angle between the first connecting plate 401 and the second connecting plate 402 is 90 degrees, protecting the external connection end 104 in the first groove 103 in a semi-enclosed state; when the utility model needs to be used, the third protrusion 403 is pulled out and the first connecting plate 401 and the second connecting plate 402 are plugged back into the second groove 106, thereby improving the practicality of the utility model.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser particle sensor with a dustproof mechanism, comprising a main body (1), characterized in that: The main body (1) comprises a shell (101), a first through hole (102) is formed on the surface of the shell (101), a connecting hole (105) is formed on the inner wall of the shell (101), a moving mechanism (3) is installed inside the connecting hole (105), the moving mechanism (3) comprises a first protrusion (302), the surface of the first protrusion (302) is movably connected to the inner wall of the connecting hole (105), a moving plate (301) is fixedly connected to the back of the first protrusion (302), a fourth groove (305) is formed on the front of the moving plate (301), a spring (306) is fixedly connected to the inner wall of the fourth groove (305), a sealing block (307) is fixedly connected to the end of the spring (306), a second protrusion (303) is fixedly connected to the front of the moving plate (301), and a push rod (304) is fixedly connected to the front of the second protrusion (303).

2. The laser particle sensor with dust prevention mechanism as claimed in claim 1, characterized in that: The second protrusion (303) is located on the left side of the first protrusion (302), and the back side of the push rod (304) is in contact with the surface of the housing (101).

3. The laser particle sensor with dust prevention mechanism as claimed in claim 1, characterized in that: A rotating mechanism (2) is installed inside the housing (101), and the rotating mechanism (2) comprises a support rod (201), one end of the support rod (201) is fixedly connected to the inner wall of the housing (101), the end of the support rod (201) is fixedly connected to a motor (202), the output end of the motor (202) is fixedly connected to a rotating shaft (203), and the surface of the rotating shaft (203) is fixedly connected to a fan blade (204).

4. The laser particle sensor with dust prevention mechanism according to claim 1, characterized in that: A first groove (103) is provided on the surface of the shell (101), an external connection end (104) is fixedly connected to the inner wall of the first groove (103), and a second groove (106) is provided on the surface of the shell (101), the second groove (106) is located above the external connection end (104).

5. The laser particle sensor with dust prevention mechanism as claimed in claim 4, characterized in that: A telescopic mechanism (4) is installed inside the second groove (106), and the telescopic mechanism (4) comprises a first connecting plate (401), and the surface of the first connecting plate (401) is movably connected to the inner wall of the second groove (106).

6. The laser particle sensor with dust prevention mechanism as claimed in claim 5, characterized in that: The front surface of the first connecting plate (401) is movably connected to the second connecting plate (402), the left and right side surfaces of the second connecting plate (402) are fixedly connected to third protrusions (403), the upper surface of the first groove (103) is provided with a third groove (107), and the third protrusion (403) is located inside the third groove (107).

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