Air sampling device

Abstract

The utility model provides an air sampling device which effectively solves the problems that an existing air sampling device cannot be used for sampling for multiple times, cannot be used for sampling in different time periods within specific time and is inconvenient for sampling inspection. According to the technical scheme, the sampling device comprises a long circular shell, two rotatable belt wheels are arranged in the shell, conveying is conducted between the two belt wheels through a belt, an annular interval is formed between the belt and a side plate of the shell, a plurality of sampling bottles are evenly distributed in the annular interval, a plurality of partition plates corresponding to the sampling bottles are evenly distributed on the surface of the belt, and the multiple partition plates and the sampling bottles are distributed at intervals; the belt rotates to drive the plurality of sampling bottles to move simultaneously through the plurality of partition plates; vent holes are formed in the middle parts of the left ends of the front and rear side plates of the shell; the sampling bottle comprises cylinders, the cylinders are arranged front and back, circular plates are arranged at openings in the front and back ends of the cylinders, the circular plates can plug the cylinders, small shafts penetrate through the middles of the circular plates and are fixed on the cylinders, and torsional springs are connected between the small shafts and the circular plates.

Description

Technical Field

[0001] The utility model relates to the technical field of air monitoring and sampling, in particular to an air sampling device. Background Art

[0002] In order to grasp the air quality, it is necessary to conduct fixed-point, continuous or regular sampling and measurement of pollutants in the air. For the exhaust gas emissions of enterprises during production, random inspections should be adopted. Irregular random inspections can urge enterprises to discharge exhaust gas in a more standardized manner. The existing Chinese patent document CN218297735U discloses an air sampling tool and CN218444623U discloses a simple air sampler. Such schemes are only suitable for single collection and cannot be used for multiple sampling within a specific time. Such sampling technology can only meet the requirements of air sampling at the time of on-site sampling, and does not have the function of sampling exhaust gas within a period of time before this moment. In short, it is not retroactive, which also makes it difficult to obtain evidence of illegal discharge. Patent document CN219830479U discloses an air sampling device. Although this device can take samples multiple times, it still only samples the air at the time of sampling and is not retroactive.

[0003] In response to the above problems, an air sampling device is now provided that can perform uninterrupted sampling at a specific location. When conducting spot checks at any time, it can not only sample the air at that moment, but also obtain samples of the air within a period of time before the sampling. It has traceability and is more conducive to air quality monitoring. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides an air sampling device, which effectively solves the problems that the existing air sampling device cannot take samples multiple times, cannot take samples in different time periods within a specific time, and is not convenient for random inspections.

[0005] The technical solution is as follows: it includes an oblong shell, two rotatable pulleys in the shell, a belt transmission between the two pulleys, an annular space formed between the belt and the side plate of the shell, a plurality of sampling bottles are evenly distributed in the annular space, a plurality of partitions corresponding to the sampling bottles are evenly distributed on the surface of the belt, and the plurality of partitions are spaced apart from the sampling bottles; the belt rotates through the plurality of partitions to drive the plurality of sampling bottles to move simultaneously; a vent hole is provided in the middle of the left end of the front and rear side plates of the shell;

[0006] The sampling bottle includes a cylinder, which is arranged front and back. There are circular plates at the openings at both ends of the cylinder, which can seal the cylinder. A small shaft runs through the middle of the circular plate, which is fixed on the cylinder, and a torsion spring is connected between the small shaft and the circular plate.

[0007] Furthermore, the diameter of the vent hole is larger than the diameter of the circular plate, and the diameter of the vent hole is smaller than the diameter of the cylinder.

[0008] Furthermore, one of the pulleys is connected to a servo motor, which is fixed to the housing.

[0009] Furthermore, an inlet and outlet are provided at the left end of the shell, and horizontal slots are provided at the left ends of the front and rear side plates of the shell, and the width of the slots is smaller than the diameter of the circular plate.

[0010] Furthermore, a sealing strip is provided between the outer edge surface of the circular plate and the cylinder.

[0011] The utility model has an ingenious structure and can perform uninterrupted sampling at a specific location. When performing spot checks at any time, not only can the air at that moment be sampled, but also samples of the air within a period of time before the sampling can be obtained, which has traceability and is more conducive to air quality monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the main view of the utility model.

[0013] Figure 2 It is a side view of the utility model.

[0014] Figure 3 It is a top view of the utility model.

[0015] Figure 4 This is a front sectional view of the utility model.

[0016] Figure 5 This is a top sectional view of the utility model.

[0017] Figure 6 This is a state diagram of the sampling bottle in the present invention when it is in an open state.

[0018] Figure 7 This is a state diagram of the sampling bottle in the present invention when it is in a closed state. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0020] Depend on Figures 1 to 7 The utility model includes an oblong shell 1, with two rotatable pulleys 2 inside the shell 1. The two pulleys 2 are transmitted via a belt. An annular interval is formed between the belt and the side plate of the shell 1. A plurality of sampling bottles 3 are evenly distributed in the annular interval. A plurality of partitions 4 corresponding to the sampling bottles 3 are evenly distributed on the surface of the belt. The plurality of partitions 4 are spaced apart from the sampling bottles 3. The belt rotates through the plurality of partitions 4 to drive the plurality of sampling bottles 3 to move simultaneously. A vent hole 5 is provided in the middle of the left end of the front and rear side plates of the shell 1.

[0021] The sampling bottle 3 includes a cylinder 6, which is arranged front and back. There are circular plates 7 at the openings at both ends of the cylinder 6. The circular plates 7 can seal the cylinder 6. A small shaft 8 runs through the middle of the circular plate 7. The small shaft 8 is fixed on the cylinder 6. A torsion spring is connected between the small shaft 8 and the circular plate 7.

[0022] In order to prevent the end of the cylinder 6 from extending from the vent hole 5 , the diameter of the vent hole 5 is larger than the diameter of the circular plate 7 , and the diameter of the vent hole 5 is smaller than the diameter of the cylinder 6 .

[0023] A servo motor 9 is connected to one of the pulleys 2 , and the servo motor 9 is fixed on the housing 1 .

[0024] In order to facilitate the entry and exit of the sampling bottle 3, an inlet and outlet are opened at the left end of the shell 1, and a horizontal notch is opened at the left end of the front and rear side plates of the shell 1. The width of the notch is smaller than the diameter of the circular plate 7.

[0025] A sealing strip is provided between the outer edge of the circular plate 7 and the cylinder 6 .

[0026] It is worth noting that when the sampling bottle 3 is at the vent hole 5, the torsion spring is not subjected to external force, the circular plate 7 is horizontal, and the two ends of the cylinder 6 are in an open state; when the sampling bottle 3 leaves the vent hole 5, the circular plate 7 blocks the ends of the cylinder 6 due to the squeezing of the front and rear side plates of the shell 1.

[0027] In order to have sufficient electricity and power in actual use, a PLC module can be used to control the timing of the motor opening and closing, so that it can have the function of timed sampling. On this basis, solar power generation, wind power generation and other modules are used to enable it to adapt to different working conditions.

[0028] When in use, place the device in a suitable place. In the initial state, as shown in the figure, both ends of the sampling bottle 3 at the vent 5 are open, and air enters the sampling bottle 3 through the vent 5. After a period of time, the motor starts, and the motor drives the belt to rotate through the pulley 2. The belt rotation drives multiple sampling bottles 3 to rotate through multiple partitions 4. At this time, the sampling bottle 3 at the vent 5 rotates. During the rotation, due to the pressure of the edge of the vent 5, the circular plate 7 in the sampling bottle 3 blocks the end of the cylinder 6, and the sample is sealed. When the next sampling bottle 3 reaches the vent 5, the circular plate 7 therein is horizontal under the action of the torsion spring, and sampling begins at this time; this cycle is repeated to achieve the purpose of sampling.

[0029] When spot checking, samples can be taken out from all the sampling bottles 3 from the left end in order and arranged in order to obtain samples at that moment and within a period of time before; and new sampling bottles 3 can be placed in the housing 1.

[0030] Since the number of samples is limited, the sampling bottle 3 continuously follows the belt cycle, so that the sample continuously covers the previous round of samples. Based on this, in order to ensure the accuracy of sampling and detection, this device is more suitable for spot checking air with low dust content or no dust.

[0031] The utility model has an ingenious structure and can perform uninterrupted sampling at a specific location. When performing spot checks at any time, not only can the air at that moment be sampled, but also samples of the air within a period of time before the sampling can be obtained, which has traceability and is more conducive to air quality monitoring.

Claims

1. An air sampling device, characterized in that: The invention comprises an oblong shell (1), wherein two rotatable pulleys (2) are arranged in the shell (1), and the two pulleys (2) are transmitted via a belt, and an annular interval is formed between the belt and the side plate of the shell (1), and a plurality of sampling bottles (3) are evenly distributed in the annular interval, and a plurality of partitions (4) corresponding to the sampling bottles (3) are evenly distributed on the surface of the belt, and the plurality of partitions (4) are spaced apart from the sampling bottles (3); the belt rotates through the plurality of partitions (4) to drive the plurality of sampling bottles (3) to move simultaneously; and a vent hole (5) is provided at the middle of the left end of the front and rear side plates of the shell (1); The sampling bottle (3) includes a cylinder (6), which is arranged front and back. There are circular plates (7) at the openings at both ends of the cylinder (6). The circular plates (7) can seal the cylinder (6). A small shaft (8) runs through the middle of the circular plate (7). The small shaft (8) is fixed on the cylinder (6), and a torsion spring is connected between the small shaft (8) and the circular plate (7).

2. An air sampling device according to claim 1, characterized in that: The diameter of the vent hole (5) is larger than the diameter of the circular plate (7), and the diameter of the vent hole (5) is smaller than the diameter of the cylinder (6).

3. An air sampling device according to claim 2, characterized in that: A servo motor (9) is connected to one of the pulleys (2), and the servo motor (9) is fixed to the housing (1).

4. An air sampling device according to claim 1 or 3, characterized in that: The left end of the shell (1) is provided with an inlet and outlet, and the left ends of the front and rear side plates of the shell (1) are provided with horizontal slots, the width of which is smaller than the diameter of the circular plate (7).

5. The air sampling device according to claim 1, characterized in that: A sealing strip is provided between the outer edge surface of the circular plate (7) and the cylinder (6).

Images