Gas particulate matter concentration detection equipment

Abstract

The utility model provides gas particulate matter concentration detection equipment which comprises a detection bin and a heating part, the lower end of the detection bin is fixedly connected with a supporting cylinder, the detection bin and the supporting cylinder are both of a hollow structure and are communicated with each other, the heating part used for dehumidifying air is arranged in the detection bin, and the heating part is connected with the supporting cylinder. Compared with the prior art, the device has the following beneficial effects that the heating coil is arranged to heat air, so that the water vapor content in the air is reduced, and the water vapor is prevented from absorbing or scattering light rays and being adsorbed on the surfaces of gas particulate matters; meanwhile, by arranging a fixing assembly, the heating coil can be rapidly taken out and replaced by pulling an inserting rod, and by arranging a protection component, the heating coil can be rapidly replaced by utilizing a lens under the condition that light penetration is not affected, so that the heating coil can be rapidly replaced. And the bad influence of the heated air on the light beam emitter and the detector is prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas detection equipment, and specifically relates to a gas particulate matter concentration detection device. Background Technology

[0002] A gas particulate matter concentration detection device is an instrument used to measure the quantity or mass concentration of particulate matter contained in a given volume of gas. Its core function is to detect and quantify particulate matter in the gas using various physical or chemical methods, thereby obtaining particulate matter concentration data. However, gas particulate matter concentration detection devices without air heating and dehumidification functions have a significant drawback: they are easily affected by moisture, leading to measurement deviations or even failure. This drawback stems from the physicochemical properties of moisture itself and its interaction with the gas particulate matter being measured. First, moisture absorbs and scatters light, affecting optically based detection devices. Second, moisture adsorbs onto the surface of gas particulate matter, altering the particle size and optical properties, thus affecting the detection results. Therefore, we aim to design a gas particulate matter concentration detection device to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gas particulate matter concentration detection device to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a gas particulate matter concentration detection device, comprising: a detection chamber and a heating component, wherein a support cylinder is fixedly connected to the lower end of the detection chamber, the detection chamber and the support cylinder are both hollow structures and interconnected, a heating component for dehumidifying the air is provided inside the detection chamber, and a protective component is provided on the right side of the detection chamber.

[0005] The heating component includes a connecting frame that is slidably fitted inside the detection chamber. Four sets of fixing frames are fixedly connected to the right side of the connecting frame. A heating coil is provided on the outside of the fixing frame. A fixing component is provided on the outside of the detection chamber. A fan is fixedly installed at the right end of the inside of the detection chamber. By setting up the heating component, the water vapor content in the air can be reduced, and the influence of water vapor on light refraction can be reduced, thereby improving the measurement accuracy.

[0006] In a preferred embodiment, the outer side of the heating coil is coated with a Teflon coating to prevent dust adhesion, and the mounting bracket is made of an insulating material. By setting the Teflon coating, dust adhesion is prevented, thus avoiding affecting the detection accuracy.

[0007] In a preferred embodiment, the two ends of the heating coil extend into the interior of the support cylinder and are switched on and off by a switch.

[0008] In a preferred embodiment, the fixing component includes a support frame, which is fixedly connected to the outside of the detection chamber. An insert rod slides through the inside of the support frame, and a collar is fixedly connected to the outside of the insert rod.

[0009] The rear side of the collar contacts the detection chamber, and one end of the spring is fixedly connected to the front side of the collar. The other end of the spring is fixedly connected to the inner surface of the support frame. By setting the spring, the elastic force of the spring is used to limit the insertion rod.

[0010] In a preferred embodiment, the rear end of the insertion rod slides through the interior of the detection chamber, and the rear end of the insertion rod is slidably sleeved inside the connecting frame. The connecting frame is fixed by the insertion rod, which facilitates the replacement of the heating coil.

[0011] In a preferred embodiment, the protective component includes two mounting cylinders, and a mounting plate is fixedly connected to the inside of the two mounting cylinders by a connecting rod;

[0012] A beam emitter and a detector are fixedly installed on the side of the two mounting plates near the detection chamber, respectively. Lenses are fixedly connected inside the two mounting cylinders to prevent hot air from entering the mounting cylinders. By setting the mounting cylinders and lenses, the beam emitter and detector can be installed on the outside of the detection chamber to prevent the heated air from having an adverse effect on the beam emitter and detector.

[0013] In a preferred embodiment, the two mounting cylinders are provided with external threads at the ends near the detection chamber. The detection chamber and the mounting cylinders are engaged by the threads. By setting the mounting cylinders to be engaged with the detection chamber by threads, it is convenient to remove the mounting cylinders and maintain the beam emitter and detector inside them.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by setting a heating coil to heat the air, the water vapor content in the air is reduced, preventing water vapor from absorbing or scattering light and from adsorbing on the surface of gas particles, changing the particle size and optical properties of the particles, and further causing deviations or even failures in the measurement results. At the same time, by setting a fixing component, the heating coil can be quickly removed and replaced by pulling the plug rod. In addition, by setting a protective component, the lens is used to prevent the heated air from causing adverse effects on the beam emitter and detector without affecting the light transmission. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a right-side oblique view of the overall structure of a gas particulate matter concentration detection device according to this utility model.

[0017] Figure 2 This is a partial structural cross-sectional view of a gas particulate matter concentration detection device according to the present invention.

[0018] Figure 3 This utility model relates to a gaseous particulate matter concentration detection device. Figure 2 Enlarged view of part A of the structure.

[0019] Figure 4 This is a partial perspective view of the heating component of a gas particulate matter concentration detection device according to the present invention.

[0020] Figure 5 This is a cross-sectional perspective view of the protective component of a gas particulate matter concentration detection device according to the present invention.

[0021] In the diagram, 1-detection chamber, 2-support cylinder, 3-heating component, 4-protective component, 5-beam emitter, 6-detector;

[0022] 31-Connecting frame, 32-Fixing frame, 33-Heating coil, 34-Fixing component, 341-Support frame, 342-Insertion rod, 343-Collar, 344-Spring, 35-Fan;

[0023] 41-Mounting cylinder, 42-External thread, 43-Mounting plate, 44-Lens. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 5This utility model provides a technical solution: a gas particulate matter concentration detection device, including: a detection chamber 1 and a heating component 3. The lower end of the detection chamber 1 is fixedly connected to a support cylinder 2. The detection chamber 1 and the support cylinder 2 are both hollow structures and are interconnected. The interior of the detection chamber 1 is provided with a heating component 3 for dehumidifying the air. The right side of the detection chamber 1 is provided with a protective component 4.

[0026] The heating component 3 includes a connecting frame 31, which is slidably fitted inside the detection chamber 1. Four sets of fixing frames 32 are fixedly connected to the right side of the connecting frame 31. A heating coil 33 is provided on the outside of the fixing frame 32. A fixing component 34 is provided on the outside of the detection chamber 1. A fan 35 is fixedly installed at the right end of the inside of the detection chamber 1. By setting the heating component 3, the water vapor content in the air can be reduced, and the influence of water vapor on light refraction can be reduced, thereby improving the measurement accuracy.

[0027] The outer side of the heating coil 33 is coated with a Teflon coating to prevent dust adhesion. The mounting bracket 32 ​​is made of an insulating material. The Teflon coating prevents dust adhesion and avoids affecting the detection accuracy.

[0028] The two ends of the heating coil 33 extend into the interior of the support cylinder 2 and are switched on and off by a switch.

[0029] The fixing component 34 includes a support frame 341, which is fixedly connected to the outside of the detection chamber 1. An insert rod 342 slides through the inside of the support frame 341, and a collar 343 is fixedly connected to the outside of the insert rod 342.

[0030] The rear side of the collar 343 contacts the detection chamber 1. One end of the spring 344 is fixedly connected to the front side of the collar 343. The other end of the spring 344 is fixedly connected to the inner surface of the support frame 341. By setting the spring 344, the elastic force of the spring 344 is used to limit the insertion rod 342.

[0031] The rear end of the insertion rod 342 slides through the interior of the detection chamber 1, and the rear end of the insertion rod 342 slides into the interior of the connecting frame 31. The connecting frame 31 is fixed by setting the insertion rod 342, which facilitates the replacement of the heating coil 33.

[0032] The protective component 4 includes two mounting cylinders 41, and the interior of the two mounting cylinders 41 is fixedly connected to a mounting plate 43 via a connecting rod;

[0033] Two mounting plates 43 are fixedly mounted on the side near the detection chamber 1, respectively, with a beam emitter 5 and a detector 6. Lenses 44 are fixedly connected inside the two mounting cylinders 41 to prevent hot air from entering the mounting cylinders 41. By setting the mounting cylinders 41 and the lenses 44, the beam emitter 5 and the detector 6 can be installed on the outside of the detection chamber 1 to prevent the heated air from having an adverse effect on the beam emitter 5 and the detector 6.

[0034] Two mounting cylinders 41 are provided with external threads 42 at one end near the detection chamber 1. The detection chamber 1 and the mounting cylinders 41 are screwed together by the threads. By setting the mounting cylinders 41 and the detection chamber 1 to be screwed together by the threads, it is easy to remove the mounting cylinders 41 and maintain the beam emitter 5 and detector 6 inside them.

[0035] Please see Figures 1 to 4 As the first embodiment of this utility model: when it is necessary to detect the concentration of particles in the air, firstly, the switch is turned on to energize the heating coil 33 and convert electrical energy into heat energy. Then, the fan 35 is turned on, and the fan 35 creates an air pressure difference between the inside of the detection chamber 1 and the outside, so that air enters from the left end of the detection chamber 1. When the air is heated by the heating coil 33, the water vapor content of the air will be reduced, further reducing the influence of water vapor on light refraction, thereby improving the measurement accuracy. In order to ensure the stable operation of the heating coil 33, when it is necessary to replace the heating coil 33, the insertion rod 342 is pulled. While the insertion rod 342 moves, it drives the collar 343 to move. While the collar 343 moves, it drives the spring 344 to compress and deform. When the insertion rod 342 moves to the point of disengaging from the inside of the connecting frame 31, the connecting frame 31, the fixing frame 32 and the heating coil 33 can be moved out to the left, and then the heating coil 33 can be replaced.

[0036] Please see Figure 1 , Figure 5 As a second embodiment of this utility model: Based on the description in the above embodiments, further, during the detection of particulate concentration in the air, the beam emitter 5 emits a beam that passes through the air sample, and part of the light is scattered by the particulate matter. The intensity of the scattered light is measured by the detector 6, and the concentration of particulate matter can be calculated. At the same time, the lens 44 can prevent the air heated by the heating coil 33 in the detection chamber 1 from entering the interior of the mounting cylinder 41, which would further have an adverse effect on the beam emitter 5 and the detector 6. Since the beam emitter 5 and the detector 6 are both installed inside the mounting cylinder 41, when maintenance of the beam emitter 5 and the detector 6 is required, the mounting cylinder 41 can be rotated to separate it from the detection chamber 1, and then the beam emitter 5 and the detector 6 inside the mounting cylinder 41 can be maintained.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gaseous particulate matter concentration detection device, comprising: The detection chamber (1) and the heating component (3) are characterized in that a support cylinder (2) is fixedly connected to the lower end of the detection chamber (1), the detection chamber (1) and the support cylinder (2) are both hollow structures and are interconnected, the detection chamber (1) is provided with a heating component (3) for dehumidifying the air, and a protective component (4) is provided on the right side of the detection chamber (1). The heating component (3) includes a connecting frame (31), which is slidably sleeved inside the detection chamber (1). Four sets of fixing frames (32) are fixedly connected to the right side of the connecting frame (31). A heating coil (33) is provided on the outside of the fixing frame (32). A fixing component (34) is provided on the outside of the detection chamber (1). A fan (35) is fixedly installed at the right end inside the detection chamber (1).

2. The gas particulate matter concentration detection device as described in claim 1, characterized in that: The heating coil (33) is coated with a Teflon coating to prevent dust adhesion, and the mounting bracket (32) is made of an insulating material.

3. The gas particulate matter concentration detection device as described in claim 2, characterized in that: The heating coil (33) extends to the inside of the support cylinder (2) at both ends and is switched on and off by a switch.

4. The gas particulate matter concentration detection device as described in claim 1, characterized in that: The fixing component (34) includes a support frame (341), which is fixedly connected to the outside of the detection chamber (1). A rod (342) slides through the inside of the support frame (341), and a collar (343) is fixedly connected to the outside of the rod (342). The rear side of the collar (343) contacts the detection chamber (1), and one end of the spring (344) is fixedly connected to the front side of the collar (343). The other end of the spring (344) is fixedly connected to the inner surface of the support frame (341).

5. The gas particulate matter concentration detection device as described in claim 4, characterized in that: The rear end of the insertion rod (342) slides through the interior of the detection chamber (1), and the rear end of the insertion rod (342) slides into the interior of the connecting frame (31).

6. The gas particulate matter concentration detection device as described in claim 1, characterized in that: The protective component (4) includes two mounting cylinders (41), and the interior of the two mounting cylinders (41) is fixedly connected to a mounting plate (43) by a connecting rod. A beam emitter (5) and a detector (6) are fixedly installed on the side of the two mounting plates (43) near the detection chamber (1), respectively. Lenses (44) for preventing hot air from entering the mounting cylinder (41) are fixedly connected inside the two mounting cylinders (41).

7. The gas particulate matter concentration detection device as described in claim 6, characterized in that: The two mounting cylinders (41) have external threads (42) at one end near the detection chamber (1), and the detection chamber (1) and the mounting cylinders (41) are engaged by the threads.

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