Indoor air quality sampling and detecting equipment

Abstract

The utility model relates to the field of air sampling detection, and discloses indoor air quality sampling detection equipment which comprises an equipment base, a detection device capable of detecting air is arranged on the equipment base, and a rotating base located on one side of the detection device is rotationally arranged on the equipment base. A plurality of sampling and collecting mechanisms capable of temporarily storing air samples are arranged on the rotating base, a sampling driving mechanism for driving the sampling and collecting mechanisms to work is arranged on the equipment base, and the plurality of sampling and collecting mechanisms can be in butt joint with the detection device in sequence and are driven by the sampling driving mechanism to convey air into the detection device; compared with the prior art, the device has the advantages that the air pump is matched with the sampling driving mechanism to drive the folding cylinder to stretch to generate negative pressure, sufficient air is rapidly sucked in, and the problem that traditional passive air inlet is low in efficiency is solved.

Description

Technical Field

[0001] This utility model relates to the field of air sampling and detection, specifically to an indoor air quality sampling and detection device. Background Technology

[0002] Technical Background of Indoor Air Quality Sampling and Testing Equipment: Indoor air quality is directly related to human health. Pollutants such as formaldehyde, benzene, TVOC (total volatile organic compounds), and PM2.5 can cause respiratory diseases, allergic reactions, and even chronic poisoning. With the increasing awareness of health, the demand for indoor air quality (IAQ) sampling and testing is growing, and it is widely used in scenarios such as residential renovation acceptance, office compliance testing, and daily monitoring of sensitive areas such as schools and hospitals.

[0003] However, although existing sampling and detection equipment is equipped with an air pump to achieve active sampling, the sampling chamber is mostly a closed structure with a fixed volume and lacks an airflow disturbance mechanism. This can easily lead to insufficient mixing of air inside the chamber, resulting in a deviation between the pollutant concentration of the collected sample and the actual indoor air. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned difficulties and provide an indoor air quality sampling and testing device.

[0005] An indoor air quality sampling and testing device includes a base, a detection device for detecting air on the base, a rotating base rotatably mounted on the base and located on one side of the detection device, a plurality of sampling and collection mechanisms for temporarily storing air samples on the rotating base, and a sampling drive mechanism on the base to drive the sampling and collection mechanisms to work. The plurality of sampling and collection mechanisms can be sequentially connected to the detection device and, driven by the sampling drive mechanism, deliver air into the detection device. At the same time, the sampling drive mechanism drives another sampling and collection mechanism to perform sampling work.

[0006] As an improvement, a support is provided on the equipment base. The rotating base includes a base body that is located on the equipment base and passes through the support. The sampling and collection mechanism includes a fixed cylinder that is fixed to the base body. A slot is provided on the end face of the fixed cylinder near the center of the base body. A folding cylinder is fixed inside the fixed cylinder. A top cover that allows air to flow is provided at the top of the folding cylinder. The sampling drive mechanism causes the folding cylinder to retract through the top cover. The bottom end of the folding cylinder is connected to the lower air pipe. An air pump is provided on the lower air pipe. An upper air pipe is provided on the air pump. An insertion tube is inserted into the upper air pipe.

[0007] As an improvement, the top cover includes a cover plate located at the top of the folding cylinder, a motor three is provided on the cover plate, a telescopic rod is fixed to the shaft of the motor three through the cover plate, and a fan blade is provided at the bottom end of the telescopic rod.

[0008] As an improvement, a valve is installed on the lower air tube, a bracket is installed on the fixed cylinder, and an electric telescopic rod is installed on the bracket to drive the tube to move up and down to absorb air at different heights. The end of the tube is equipped with a connector that can be connected to the detection device.

[0009] As an improvement, the sampling drive mechanism includes a limiting side plate fixed to the support and correspondingly provided. A sliding plate is slidably inserted between the two limiting side plates. A slot is provided on the cover plate. A plug block that can be inserted into the slot is provided on one end face of the sliding plate. A drive tooth is provided on the other end face of the sliding plate. A gear one that meshes with the drive tooth is rotatably provided on the limiting side plate. Gear one is fixedly connected to gear two through a rotating shaft. Gear two is driven by motor two through a transmission gear.

[0010] As an improvement, the testing device is connected to a folded tube, and an end plate is fixed to the folded tube. The testing device is equipped with an electric telescopic rod two whose ends are fixed to the end plate. When the electric telescopic rod two extends, the folded tube can connect with the connector.

[0011] As an improvement, the rotating base also includes a gear ring located at the bottom of the base body. A motor is installed on the equipment base, and the motor is connected to the gear ring through a transmission gear to drive the base body to rotate.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. This equipment uses an air pump in conjunction with a sampling drive mechanism to extend the folding cylinder and generate negative pressure, which quickly draws in a sufficient amount of air, thus solving the problem of low efficiency in traditional passive air intake.

[0014] 2. This utility model is equipped with a top cover, which drives the fan blades to rotate via a three-wheeled motor, actively intervening in the airflow state inside the cylinder. By forcing airflow, it achieves specific effects such as ventilation and mixing, ensuring that the composition of the sample during testing is consistent with that during sampling, thereby improving the reliability of testing.

[0015] 3. This device uses a motor-driven sliding plate in two directions via a sampling drive mechanism: one side of the sliding plate engages with a slot via an insert block, pressing down the top cover to compress the folded cylinder and transporting the sample to the detection device via an air pump, an upper air tube, and an insertion tube; the other side of the sliding plate simultaneously pulls up another folded cylinder to complete the sampling, achieving "sampling and detection at the same time", which greatly shortens the detection cycle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an indoor air quality sampling and testing device according to this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall structure of an indoor air quality sampling and testing device according to this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram showing the overall structure of an indoor air quality sampling and testing device according to this utility model. Figure 1 .

[0019] Figure 4 This is a schematic diagram showing the overall structure of an indoor air quality sampling and testing device according to this utility model. Figure 2 .

[0020] Figure 5 This is a partial schematic diagram of the sampling and collection mechanism of an indoor air quality sampling and testing device according to this utility model. Figure 1 .

[0021] Figure 6 This is a partial schematic diagram of the sampling and collection mechanism of an indoor air quality sampling and testing device according to this utility model. Figure 2 .

[0022] Figure 7 This is a schematic diagram of the top cover structure of an indoor air quality sampling and testing device according to this utility model.

[0023] Figure 8 This is a schematic diagram of the sampling drive mechanism of an indoor air quality sampling and testing device according to this utility model.

[0024] Figure 9 This utility model relates to an indoor air quality sampling and testing device. Figure 2 Schematic diagram of the structure at point A in the middle.

[0025] As shown in the figure: 1. Equipment base; 2. Rotating base; 201. Base body; 202. Gear ring; 203. Motor 1; 3. Sampling and collection mechanism; 301. Fixed cylinder; 302. Slotted; 303. Folding cylinder; 304. Top cover; 3041. Cover plate; 3042. Motor 3; 3043. Telescopic rod; 3045. Fan blade; 3046. Slot; 305. Air pump; 306. Lower air pipe; 307. Valve; 308. Upper air pipe; 309. Insertion tube; 310. Connector; 311. Electric telescopic rod 1; 4. Detection device; 401. Folding tube; 402. End plate; 403. Electric telescopic rod 2; 5. Sampling drive mechanism; 501. Limiting side plate; 502. Slide plate; 503. Insertion block; 504. Drive gear; 505. Gear 1; 506. Gear 2; 507. Motor 2. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Combined with appendix Figure 1 , Attachment Figure 2 , Attachment Figure 3 As shown:

[0028] An indoor air quality sampling and testing device includes a base 1, a detection device 4 for detecting air is mounted on the base 1, a rotating base 2 located on one side of the detection device 4 is rotatably mounted on the base 1, a plurality of sampling and collection mechanisms 3 for temporarily storing air samples are mounted on the rotating base 2, and a sampling drive mechanism 5 is mounted on the base 1 to drive the sampling and collection mechanisms 3 to work. The plurality of sampling and collection mechanisms 3 can be connected to the detection device 4 in sequence and, driven by the sampling drive mechanism 5, transport air into the detection device 4. At the same time, the sampling drive mechanism 5 drives another sampling and collection mechanism 3 to perform sampling work.

[0029] The working principle of this utility model is as follows: When using this device, move it to the indoor sampling location, activate the sampling drive mechanism 5 to drive one sampling collection mechanism 3 to draw in air to sample the air at that location, and simultaneously drive the other sampling collection mechanism 3 to exhaust air. Since the other sampling collection mechanism 3 does not collect the required air, the detection device 4 does not need to be connected to the sampling collection mechanism 3. The detection device 4 is existing technology and is mainly used to collect and analyze air samples to detect pollutants (such as particulate matter and harmful gases) or physical parameters (such as temperature, humidity, and air pressure). Its core function is to quickly or accurately obtain air quality data. Air samples are extracted or collected through pumps, conduits, etc. (for fixed-point, mobile, or continuous air sampling); sensors (such as optical and electrochemical sensors) or analysis modules are used to identify the types of pollutants (such as PM2.5, formaldehyde, and VOCs) in the samples and quantify their concentrations; the detection results are displayed in real time on the screen, and some devices also support data storage, printing, or network transmission.

[0030] Combined with appendix Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 9 As shown:

[0031] A support is provided on the equipment base 1. The rotating base 2 includes a base body 201 that is provided on the equipment base 1 and passes through the support. The sampling and collection mechanism 3 includes a fixed cylinder 301 that is fixed to the base body 201. A slot 302 is provided on the end face of the fixed cylinder 301 near the center of the base body 201. A folding cylinder 303 is fixedly connected inside the fixed cylinder 301. A top cover 304 that allows air to flow is provided at the top of the folding cylinder 303. The sampling drive mechanism 5 causes the folding cylinder 303 to retract through the top cover 304. The bottom end of the folding cylinder 303 is connected to the lower air pipe 306. An air pump 305 is provided on the lower air pipe 306. An upper air pipe 308 is provided on the air pump 305. An insertion tube 309 is inserted into the upper air pipe 308.

[0032] The top cover 304 includes a cover plate 3041 located at the top of the folding cylinder 303. A motor 3042 is provided on the cover plate 3041. A telescopic rod 3043 is fixedly connected to the shaft of the motor 3042 through the cover plate 3041. A fan blade 3045 is provided at the bottom end of the telescopic rod 3043.

[0033] A valve 307 is provided on the lower air tube 306, a bracket is provided on the fixed cylinder 301, and an electric telescopic rod 311 is provided on the bracket to drive the insertion tube 309 to move up and down to absorb air at different heights. The end of the insertion tube 309 is provided with a connector 310 that can be connected to the detection device 4.

[0034] The sampling drive mechanism 5 includes a limiting side plate 501 fixed to the support and correspondingly provided. A sliding plate 502 is slidably inserted between the two limiting side plates 501. A slot 3046 is provided on the cover plate 3041. A plug block 503 that can be inserted into the slot 3046 is provided on one end face of the sliding plate 502. A drive tooth 504 is provided on the other end face of the sliding plate 502. A gear 1 505 that meshes with the drive tooth 504 is rotatably provided on the limiting side plate 501. The gear 1 505 is fixedly connected to the gear 2 506 through a rotating shaft. The gear 2 506 is driven by the motor 2 507 through a transmission gear.

[0035] Working principle of sampling and collection mechanism 3: When collecting and detecting air, the second motor 507 drives the second gear 506 to rotate clockwise. The rotation of the second gear 506 drives the two slide plates 502 to move in opposite directions. That is, the slide plate 502 connected to the sampling and collection mechanism 3 that is connected to the detection device 4 moves down. The slide plate 502 is inserted into the slot 3046 through the insert block 503, thereby driving the top cover 304 to compress the folding cylinder 303. At the same time, the valve 307 and the air pump 305 are opened. At this time, the air in the folding cylinder 303 is quickly transported to the detection device 4 under the action of the compression of the folding cylinder 303 and the action of the air pump 305. The detection device 4 can then detect the air.

[0036] At the same time, another slide plate 502 drives another sampling and collection mechanism 3 to collect air through the insert block 503, and turns on the air pump 305 and valve 307. That is, the slide plate 502 pulls the folding cylinder 303 upward through the top cover 304 to make the folding cylinder 303 gradually extend. At this time, the air can flow into the folding cylinder 303. After that, the air pump 305 and valve 307 are turned off to allow the air to be temporarily stored in the folding cylinder 303.

[0037] The inherent property of a closed cylinder is poor air flow, which easily leads to the formation of "dead zones" with uneven temperature, composition, and pressure. The core value of a fan is to drive air flow through mechanical force. To solve these problems, this utility model is equipped with a top cover 304. Its core function is to drive the fan blades 3045 to rotate through the motor 3042, actively intervene in the airflow state inside the cylinder, and achieve specific effects such as ventilation and mixing by forcing air flow.

[0038] Combined with appendix Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 7 , Attachment Figure 8 , Attachment Figure 9 As shown:

[0039] The detection device 4 is connected to a folded tube 401, and an end plate 402 is fixedly connected to the folded tube 401. The detection device 4 is equipped with an electric telescopic rod 403 whose end is fixedly connected to the end plate 402. When the electric telescopic rod 403 extends, the folded tube 401 can be connected to the connector 310.

[0040] The rotating base 2 also includes a gear ring 202 located at the bottom of the base body 201. A motor 203 is provided on the equipment base 1. The motor 203 is connected to the gear ring 202 through a transmission gear to drive the base body 201 to rotate.

[0041] When testing for air, the electric telescopic rod 403 is activated to extend so that the folded tube 401 connects with the connector 310. At this time, the air in the folded tube 303 can be delivered to the testing device 4.

[0042] The rotating base 2 can drive several sampling and collection mechanisms 3 to rotate. After sampling the air in one place in the room, the present invention can be moved to the lower location. Then, the rotating base 2 is started to rotate. At this time, one sampling and collection mechanism 3 that has discharged the air rotates to be connected to the sampling drive mechanism 5 and collects the air under the drive of the sampling drive mechanism 5. The sampling and collection mechanism 3 that rotates to be connected to the detection device 4 can deliver the air to the detection device 4 under the drive of the sampling drive mechanism 5.

[0043] When the rotating base 2 drives several sampling and collection mechanisms 3 to rotate to an angle where none of the sampling and collection mechanisms 3 are in contact with the sampling drive mechanism 5, such as Figure 3Two sampling collection mechanisms 3 are in a stretched state, while the other two sampling collection mechanisms 3 are in a compressed state. The rotating base 2 needs to rotate 90 degrees intermittently during operation. At this time, when the rotating base 2 rotates 45 degrees, the insertion block 503 is located between the two sampling collection mechanisms 3. Then, the sampling drive mechanism 5 is activated to move the insertion block 503 to the initial height. Then, the rotating base 2 is rotated to allow the insertion block 503 to be smoothly inserted into the slot 3046 on the next sampling collection mechanism 3, so that the present invention can be successfully implemented. It is worth noting that when the rotating base 2 rotates 45 degrees, there is no interference between the insertion block 503 and the slots 3046 on both sides, that is, the sampling collection mechanism 3 will not block the movement of the insertion block 503.

[0044] Since the motor 3042 will revolve around the axis of the base body 201 when the base body 201 rotates, in the specific implementation of this utility model, a conductive slip ring can be set on the sampling drive mechanism 5, and the wire connected to the motor 3042 is slidably connected to the conductive slip ring. At this time, the wire connected to the motor 3042 can be prevented from getting tangled when it revolves.

[0045] When implementing the indoor air quality sampling and testing equipment, the equipment is first moved to the indoor sampling location. After the equipment is started, the motor 203 drives the base body 201 and several sampling and collection mechanisms 3 to rotate to a preset angle, so that one of the sampling and collection mechanisms 3 corresponds to the sampling drive mechanism 5 and the other corresponds to the detection device 4. At this time, the second motor 507 is started to make the two slide plates 502 slide in opposite directions: the sampling and collection mechanism 3 of the corresponding detection device 4 moves down, compressing the folding cylinder 303, and at the same time, the valve 307 and air pump 305 on the lower air pipe 306 are opened. The second electric telescopic rod 403 is started to push the folding tube 401 to connect with the connector 310. The air in the folding cylinder 303 is transported to the detection device 4 through the lower air pipe 306, upper air pipe 308, insertion tube 309 and folding tube 401 under the action of compression force and air pump 305 to complete the detection. At the same time, the other slide plate 502 moves up and drives the top cover 304 of the corresponding sampling and collection mechanism 3 to move up through the insertion block 503, so that the folding cylinder 303 extends. The air pump 305 and valve 307 of the sampling and collection mechanism 3 are started. The third motor 3042 drives the fan blade 3045 to rotate, accelerating the air to enter the folding cylinder 303. Then the valve 307 and air pump 305 are closed to realize the temporary storage of air. Once a sampling test is completed, the electric telescopic rod 403 retracts, separating the folded tube 401 from the connector 310. The motor 203 then drives the base body 201 to rotate again, turning the air-storage sampling and collection mechanism 3 to the detection device 4 side and the empty sampling and collection mechanism 3 to the sampling drive mechanism 5 side. Repeating the above steps can achieve continuous sampling and testing.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An indoor air quality sampling and testing device, comprising a device base (1), wherein a detection device (4) capable of detecting air is disposed on the device base (1), characterized in that: The equipment base (1) is rotatably provided with a rotating base (2) located on one side of the detection device (4). The rotating base (2) is provided with several sampling collection mechanisms (3) that can temporarily store air samples. The equipment base (1) is provided with a sampling drive mechanism (5) that drives the sampling collection mechanism (3) to work. Several sampling collection mechanisms (3) can be connected to the detection device (4) in sequence and transport air into the detection device (4) under the drive of the sampling drive mechanism (5). At the same time, the sampling drive mechanism (5) drives another sampling collection mechanism (3) to perform sampling work.

2. The indoor air quality sampling and testing device according to claim 1, characterized in that: A support is provided on the equipment base (1). The rotating base (2) includes a base body (201) provided on the equipment base (1) and passed through by the support. The sampling and collection mechanism (3) includes a fixed cylinder (301) fixed to the base body (201). The fixed cylinder (301) has a slot (302) on the end face near the center of the base body (201). A folding cylinder (303) is fixed inside the fixed cylinder (301). A top cover (304) that allows air to flow is provided at the top of the folding cylinder (303). The sampling drive mechanism (5) causes the folding cylinder (303) to retract through the top cover (304). The bottom end of the folding cylinder (303) is connected to the lower air pipe (306). An air pump (305) is provided on the lower air pipe (306). An upper air pipe (308) is provided on the air pump (305). An insertion tube (309) is inserted into the upper air pipe (308).

3. The indoor air quality sampling and testing device according to claim 2, characterized in that: The top cover (304) includes a cover plate (3041) located at the top of the folding tube (303). A motor three (3042) is provided on the cover plate (3041). A telescopic rod (3043) is fixedly connected to the shaft of the motor three (3042) through the cover plate (3041). A fan blade (3045) is provided at the bottom of the telescopic rod (3043).

4. The indoor air quality sampling and testing device according to claim 2, characterized in that: A valve (307) is provided on the lower air tube (306), a bracket is provided on the fixed cylinder (301), and an electric telescopic rod (311) is provided on the bracket to drive the insertion tube (309) to move up and down to absorb air at different heights. The end of the insertion tube (309) is provided with a connector (310) that can be connected to the detection device (4).

5. The indoor air quality sampling and testing device according to claim 3, characterized in that: The sampling drive mechanism (5) includes a limiting side plate (501) fixed to the support and correspondingly provided. A sliding plate (502) is slidably inserted between the two limiting side plates (501). A slot (3046) is provided on the cover plate (3041). A plug (503) that can be inserted into the slot (3046) is provided on one end face of the sliding plate (502). A drive tooth (504) is provided on the other end face of the sliding plate (502). A gear one (505) that meshes with the drive tooth (504) is rotatably provided on the limiting side plate (501). The gear one (505) is fixedly connected to the gear two (506) through a rotating shaft. The gear two (506) is driven by the motor two (507) through a transmission gear.

6. The indoor air quality sampling and testing device according to claim 4, characterized in that: The detection device (4) is connected to a folded tube (401), and an end plate (402) is fixedly connected to the folded tube (401). The detection device (4) is provided with an electric telescopic rod (403) whose end is fixedly connected to the end plate (402). When the electric telescopic rod (403) extends, the folded tube (401) can connect with the connector (310).

7. The indoor air quality sampling and testing device according to claim 2, characterized in that: The rotating base (2) also includes a gear ring (202) located at the bottom of the base body (201). A motor (203) is installed on the equipment base (1). The motor (203) is connected to the gear ring (202) through a transmission gear to drive the base body (201) to rotate.

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