Air sampler for indoor environment detection

Abstract

The utility model discloses an air sampler for indoor environment detection, which relates to the technical field of air sampling and comprises a shell and an air inlet, a cover plate, a rotating block and a switch door are arranged above the shell, a baffle is mounted in the middle in the shell, the air inlet is connected with a first pipeline, and a filter is mounted in the middle of the first pipeline. The gas sampling device has the advantages that after entering the second pipeline, gas to be detected enters the sampling bottle through the connecting port, the gas to be detected smoothly enters the bottle through the cooperation of the barrier plate and the gas outlet hole, and after gas inflation is completed, the spring pushes the barrier plate to reset to prevent gas from entering and exiting. Meanwhile, the motor runs to drive the rotating shaft to rotate, and the tail end gear is meshed with the bevel gear to enable the blades to rotate to suck air, so that the motor is prevented from being in contact with to-be-detected gas, the gas is prevented from damaging the motor, stable running of the motor is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of air sampling technology, specifically to an air sampler for indoor environmental testing. Background Technology

[0002] With increasing public concern about indoor environmental quality, accurate indoor air quality testing has become crucial. Traditional air samplers often present several problems during use. Firstly, it's difficult to effectively stabilize the air pressure inside the sampling bottle during sampling. Without a proper pressure regulation mechanism, the sampling may be unstable when gas enters the bottle, affecting the accuracy of the results. Furthermore, if the escape of gas from the bottle cannot be effectively prevented after sampling, sampling failure will occur. Secondly, the motor is prone to direct contact with the gas being tested during the air intake process. This can expose the motor to harmful substances in the gas, reducing its lifespan, and may even cause motor malfunctions that disrupt the normal operation of the entire sampler.

[0003] The applicant discovered through a search that a Chinese patent, "An Air Sampler for Indoor Environmental Testing," with publication (announcement) number "CN215218233U," mainly comprises a base plate, a support seat rotatably connected to the top of the base plate, a housing fixedly connected to the top of the support seat, a main body of the detector fixedly connected inside the housing, an air extraction mechanism installed on the top of the housing, and a snap-fit ​​seat fixedly connected to the top of the support seat. This utility model uses the base plate to support the entire device, first placing the device on a relatively flat ground, then rotating the support seat to rotate the housing, adjusting the angle of the solar panel so that it faces the sunlight, allowing the solar panel to continuously power the battery during device use, thereby extending the usage time. This achieves the advantages of the device having flexible adjustment of sampling height and direction, and a longer battery life. However, this device cannot make the sampling more stable. Therefore, we propose an air sampler for indoor environmental testing. Utility Model Content

[0004] The purpose of this invention is to provide an air sampler for indoor environmental monitoring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air sampler for indoor environmental testing, comprising a housing and an air inlet. The housing has a cover plate, a rotating block, and a switch door on its upper part. A baffle plate is installed in the middle of the housing. The air inlet is connected to a first pipe. A filter is installed in the middle section of the first pipe. A second pipe is connected to the end of the first pipe. A connection port is provided above the second pipe. A sampling bottle is connected above the connection port. Limiting blocks, barrier plates, springs, support rods, and support plates are provided on both sides of the sampling bottle. A bracket and a motor are installed on one side of the baffle plate. A support rod and blades are installed inside the first pipe.

[0006] As a further embodiment of this utility model: the barrier plate is installed on the upper surface of the limiting block, and a support rod passes through the middle of it; one end of the spring is fixed to the upper surface of the barrier plate, and the other end of the spring is fixed to the lower surface of the support plate; four sets of air vents are provided on the upper outer wall of the barrier plate.

[0007] As a further embodiment of this utility model: the bracket is installed on one side of the baffle by screws, a gear is installed below the motor shaft, the blade shaft passes through the support rod and is fixed, and a bevel gear is installed at the end of the blade shaft and meshes with the gear.

[0008] As a further embodiment of this utility model: the rotating block is fixed on the upper surface of the cover plate, the rotating end of the rotating block is fixed on the switch door, and a handle is installed on the upper surface of the switch door.

[0009] As a further embodiment of this utility model: a display screen is provided on the front side of the housing, and two sets of adjustment switches are provided on one side of the display screen.

[0010] As a further embodiment of this utility model: the connection port is fixed to the top of the second pipe by screws, and four sets are provided.

[0011] As a further embodiment of this utility model: a fixing bracket is installed in the middle of the second pipe and connected to the inner side of the housing.

[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] 1. In this invention, the gas to be tested enters the second pipe and then enters the lower opening of the sampling bottle through the connection port. The gas pushes up the baffle plate, and the gas enters the sampling bottle from the side vent. When the pressure inside the bottle is too high, the gas pushes up the baffle plate at the top, and the gas escapes from the vents distributed around the top opening, stabilizing the gas pressure inside the bottle and helping the gas to be tested enter the sampling bottle. After inflation is complete, the spring pushes the baffle plate back to its original position to prevent the gas inside the bottle from escaping and ensure stable sampling.

[0014] 2. This utility model uses the operation of a motor to drive the rotating shaft to rotate, and the gear at the end meshes with a bevel gear to drive the blade to rotate, thereby drawing in air. This prevents the motor from directly contacting the gas to be tested in the pipeline, avoiding gas damage to the motor, ensuring stable motor operation, and extending its service life.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the device in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the motor operation in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the sampling bottle in an embodiment of this utility model;

[0020] Figure 5 This is a schematic cross-sectional view of the sampling bottle in an embodiment of this utility model.

[0021] In the diagram: 1. Shell; 11. Cover plate; 12. Rotating block; 13. Opening and closing door; 14. Display screen; 15. Adjustment switch; 2. Air inlet; 21. First pipe; 2101. Support rod; 2102. Blade; 2103. Bevel gear; 2104. Second pipe; 3. Filter; 4. Baffle; 41. Bracket; 42. Motor; 43. Gear; 5. Connection port; 6. Sampling bottle; 61. Limiting block; 62. Barrier plate; 63. Spring; 64. Support rod; 65. Support plate; 7. Fixing frame. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0023] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see the appendix Figure 1 -Appendix Figure 5This utility model discloses an air sampler for indoor environmental monitoring, mainly composed of a housing 1 and an air inlet 2. Above the housing 1, a cover plate 11, a rotating block 12, and a switch door 13 are arranged. The cover plate 11 provides some protection for the entire device. The rotating block 12 is cleverly connected to the switch door 13, allowing the switch door 13 to rotate flexibly for easy operation. The switch door 13 also has a handle for easy gripping, further enhancing ease of use. Inside the housing 1, a baffle 4 is securely installed in the middle, dividing the interior of the housing 1 into two areas, providing some separation and support. The air inlet 2 is tightly connected to a first pipe 21. In the middle section, a high-performance filter 3 is installed. This filter 3 can effectively filter out impurities and pollutants in the air, ensuring the purity of the air entering the sampler and providing an accurate data basis for subsequent testing. The end of the first pipe 21 splits into two second pipes 2104, which are tightly and seamlessly connected to ensure smooth airflow. A connection port 5 is provided above the second pipe 2104, and the sampling bottle 6 is tightly connected above this connection port 5. On both sides of the sampling bottle 6, there are key components such as a limiting block 61, a baffle plate 62, a spring 63, a support rod 64, and a support plate 65. The limiting block 61 restricts the position of the baffle plate 62, and the baffle plate 62 can... The system effectively blocks air, providing a seal and regulating pressure. Spring 63 automatically adjusts the position of the baffle 62 according to pressure changes, ensuring stable pressure inside the sampling bottle 6. Support rod 64 and support plate 65 provide stable support for the baffle 62 and spring 63, ensuring the reliability of the entire device. On one side of the baffle 4, bracket 41 and motor 42 are installed. Bracket 41 is securely mounted on the baffle 4 with screws, providing stable support for motor 42. Motor 42 plays a crucial role in the entire air sampling process. Inside the first pipe 21, support rod 2101 and blade 2102 are installed. Support rod 2101 provides support for blade 2102. With stable support, the blade 2102 rotates at high speed under the drive of the motor 42, drawing air into the sampler. The rotating shaft of the blade 2102 passes through the support rod 2101 and is fixed, ensuring that the blade 2102 will not wobble or deviate during rotation. A bevel gear 2103 is installed at the end of the rotating shaft of the blade 2102 and meshes with the gear 43 below the rotating shaft of the motor 42. This design enables the motor 42 to efficiently drive the blade 2102 to rotate, realizing the function of drawing air into the sampler. At the same time, this design can also prevent the motor 42 from directly contacting the gas to be tested in the pipeline, avoiding damage to the motor 42, enabling the motor 42 to operate stably and extending its service life.

[0025] In the first embodiment, the baffle plate 62 is installed on the upper surface of the limiting block 61, and a support rod 64 passes through the middle. One end of the spring 63 is fixed to the upper surface of the baffle plate 62, and the other end of the spring 63 is fixed to the lower surface of the support plate 65. Four sets of air vents are opened on the upper outer wall of the baffle plate 62. The bracket 41 is installed on one side of the baffle plate 4 by screws. A gear 43 is installed below the rotating shaft of the motor 42. The rotating shaft of the blade 2102 passes through the support rod 2101 and is fixed. A bevel gear 2103 is installed at the end of the rotating shaft of the blade 2102 and meshes with the gear 43.

[0026] Specifically, the baffle plate 62 is securely mounted on the upper surface of the limiting block 61, ensuring a tight connection and sealing of the baffle plate 62. A support rod 64 passes through the middle of the baffle plate 62, providing additional support and guidance. One end of the spring 63 is firmly fixed to the upper surface of the baffle plate 62, ensuring its effective operation. The other end of the spring 63 is fixed to the lower surface of the support plate 65, providing a stable support base for the spring 63. Four sets of vent holes are evenly distributed on the upper outer wall of the baffle plate 62, allowing gas to enter or exit when the baffle plate 62 rises. The bracket 41 is mounted on one side of the baffle plate 4 with screws, ensuring its sturdiness and stability. The motor 42's rotating shaft is carefully positioned below... A gear 43 is installed, and the installation of gear 43 is closely matched with the rotating shaft. The rotating shaft of blade 2102 passes through support rod 2101 and is firmly fixed. Support rod 2101 provides stable support for the rotating shaft of blade 2102, ensuring that blade 2102 will not wobble or deviate during rotation. A bevel gear 2103 is installed at the end of the rotating shaft of blade 2102. This bevel gear 2103 meshes with gear 43. The meshing precision between the two is high, which can efficiently transmit power. This design not only enables motor 42 to effectively drive blade 2102 to rotate and realize the function of sucking air into the sampler, but also prevents motor 42 from directly contacting the gas to be detected in the pipeline, avoiding damage to motor 42 by the gas, thereby ensuring stable operation of motor 42 and greatly extending the service life of motor 42.

[0027] In embodiment 2, the rotating block 12 is fixed on the upper surface of the cover plate 11, the rotating end of the rotating block 12 is fixed on the switch door 13, the upper surface of the switch door 13 is equipped with a handle, the front side of the housing 1 is provided with a display screen 14, two sets of adjustment switches 15 are provided on one side of the display screen 14, the connection port 5 is fixed to the upper part of the second pipe 2104 by screws, and four sets are provided, the middle of the second pipe 2104 is equipped with a fixing bracket 7, and it is connected to the inner side of the housing 1;

[0028] Specifically, the rotating block 12 is tightly fixed to the upper surface of the cover plate 11 to ensure that it will not loosen or fall off during use. The rotating end of the rotating block 12 is also firmly fixed to the switch door 13, allowing the switch door 13 to rotate flexibly under the drive of the rotating block 12. A handle is carefully installed on the upper surface of the switch door 13 for easy gripping and operation, greatly facilitating its use. The front side of the housing 1 is carefully designed with a display screen 14, which clearly displays various operating parameters and status information of the air sampler, providing users with intuitive reference. On one side of the display screen 14, there are two sets of adjustment switches 15. The switch 15 is easy to operate, allowing users to adjust and set various parameters of the air sampler according to actual needs. The connection port 5 is fixed to the top of the second pipe 2104 with sturdy screws. The selection and installation of the screws ensure the firmness and stability of the connection port 5. There are four sets of connection ports 5. This design can connect four sampling bottles 6 at the same time, improving the efficiency and flexibility of air sampling. A fixing bracket is installed in the middle of the second pipe 2104. The fixing bracket can provide stable support for the second pipe 2104. The fixing bracket is connected to the inside of the housing 1. This connection method ensures that the second pipe 2104 will not shake or shift during operation, ensuring the accuracy and stability of air sampling.

[0029] Working principle:

[0030] First, after the motor 42 starts, the rotating shaft of the motor 42 drives the gear 43 below to rotate. Since the bevel gear 2103 at the end of the rotating shaft of the blade 2102 meshes with the gear 43 of the motor 42, the blade 2102 is driven to rotate in the first pipe 21. The rotation of the blade 2102 generates suction, which causes outside air to enter the first pipe 21 from the air inlet 2. During the process of the air entering the first pipe 21, it will first pass through the filter 3 in the middle section. The filter 3 filters out impurities and pollutants in the air to ensure that the air entering the subsequent pipe is relatively pure. The filtered air flows along the first pipe 21 to the end under the suction of the blade 2102 and enters the second pipe 2104. After the gas to be detected enters the second pipe 2104, it enters the lower opening of the sampling bottle 6 through the connection port 5. When the gas enters the sampling bottle 6, it will push up the baffle plate 62. The gas enters the sampling bottle 6 from the air outlet on the side of the baffle plate 62. If the gas in the bottle is... If the pressure is too high, the gas will push up the baffle plate 62 at the top. At this time, the gas will escape from the vents distributed around the top, thereby stabilizing the gas pressure inside the bottle. At the same time, this pressure regulation also helps the gas to be tested to continuously enter the sampling bottle 6. After inflation is complete, the spring 63 will push the baffle plate 62 to reset, preventing the gas inside the bottle from escaping and ensuring stable sampling. During the entire operation, the rotating block 12 can drive the switch door 13 to rotate flexibly, facilitating the installation and removal of the sampling bottle 6 inside the housing 1. The display screen 14 on the front of the housing 1 can display the working parameters and status information of the air sampler in real time. The parameters of the sampler can be adjusted by adjusting the switch 15. The fixing bracket 7 in the middle of the second pipe 2104 is connected to the inside of the housing 1, providing stable support for the second pipe 2104. The connection port 5 is fixed above the second pipe 2104 with screws to ensure a firm and reliable connection with the sampling bottle 6. At this point, the entire workflow is completed.

[0031] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. An air sampler for indoor environmental monitoring, comprising a housing (1) and an air inlet (2), wherein a cover plate (11), a rotating block (12), and a switch door (13) are provided on the top of the housing (1), a baffle (4) is installed in the middle part of the housing (1), the air inlet (2) is connected to a first pipe (21), a filter (3) is installed in the middle section of the first pipe (21), and a second pipe (2104) is connected to the end of the first pipe (21), characterized in that: The second pipe (2104) is provided with a connection port (5) above it, and a sampling bottle (6) is connected above the connection port (5). The sampling bottle (6) is provided with a limiting block (61), a baffle plate (62), a spring (63), a support rod (64) and a support plate (65) on both sides. A bracket (41) and a motor (42) are installed on one side of the baffle (4). A support rod (2101) and a blade (2102) are installed inside the first pipe (21).

2. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: The barrier plate (62) is installed on the upper surface of the limiting block (61) and a support rod (64) passes through the middle. One end of the spring (63) is fixed on the upper surface of the barrier plate (62) and the other end of the spring (63) is fixed on the lower surface of the support plate (65). Four sets of air outlets are opened on the upper outer wall of the barrier plate (62).

3. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: The bracket (41) is installed on one side of the baffle (4) by screws. A gear (43) is installed below the rotating shaft of the motor (42). The rotating shaft of the blade (2102) passes through the support rod (2101) and is fixed. A bevel gear (2103) is installed at the end of the rotating shaft of the blade (2102) and meshes with the gear (43).

4. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: The rotating block (12) is fixed on the upper surface of the cover plate (11), and the rotating end of the rotating block (12) is fixed on the switch door (13). A handle is installed on the upper surface of the switch door (13).

5. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: The front side of the housing (1) is provided with a display screen (14), and two sets of adjustment switches (15) are provided on one side of the display screen (14).

6. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: The connection port (5) is fixed to the top of the second pipe (2104) by screws, and four sets are provided.

7. An air sampler for indoor environmental monitoring according to claim 1, characterized in that: A fixing bracket (7) is installed in the middle of the second pipe (2104) and is connected to the inside of the housing (1).

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