A gas sampling instrument

Abstract

The utility model discloses a kind of gas sampling instrument, including sampling shell, the left and right sides of the lower end middle part of sampling shell are equipped with protective frame, the inside lower end middle part of sampling shell is equipped with connecting pipe, the lower end of connecting pipe is equipped with sampling bottle, further including sampling mechanism, sampling mechanism: it includes connector, limit slot, limit claw, limit head, limit protrusion and collection assembly, the lower end of the outer surface of connecting pipe is equipped with bearing, connector is set on the outer surface of bearing, limit slot is respectively opened in the left and right sides of the lower end of the outer surface of connector, limit claw is respectively slidably connected in the middle of the middle part of protective frame close to connector side, the gas sampling instrument, with sampling mechanism, air pipe is integrated with sampling shell, air pipe is received by mounting groove, portable air pipe is not easy to lose, sampling bottle can also be quickly connected and disassembled by the up-down movement of limit claw, improve the sampling efficiency of gas.

Description

Technical Field

[0001] This utility model relates to the field of gas sampler technology, specifically a gas sampler. Background Technology

[0002] A gas sampler is a device used to collect specific components from air or other gases. It is widely used in environmental monitoring, industrial safety, scientific research, and other fields. It acquires and preserves gas samples for subsequent analysis through suction or adsorption. Existing gas samplers consist of a collection mechanism, a drive mechanism, and a storage mechanism. The collection mechanism consists of a gas guide tube made of a metal serpentine tube and a sensor. The drive mechanism consists of a vacuum pump. The storage mechanism consists of a sampling bottle with a threaded opening and a one-way valve. In use, the gas guide tube is connected to the device, and then the storage mechanism is installed in place by threading. The end of the gas guide tube is aligned with the sampling area, and the vacuum pump operates to draw in the gas from the sampling area. The gas opens the valve flap of the one-way valve and enters the sampling bottle, completing the gas sampling process. In traditional gas samplers, for portability, the gas guide tube is separated from the device, and the gas guide tube is easily lost. The sampling bottle is connected by threads, but to ensure a tight seal, multiple turns of threads are required. This means that the sampling bottle needs to be rotated multiple times when connecting or disconnecting, which is inconvenient and affects the gas sampling efficiency. Therefore, we propose a new gas sampler. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a gas sampler with a sampling mechanism. The gas guide tube is integrated with the sampling shell and the gas guide tube is stored in the mounting slot. It is portable and the gas guide tube is not easy to lose. The sampling bottle can be quickly connected and disassembled by the up and down movement of the limiting claw, which improves the gas sampling efficiency and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gas sampler, including a sampling shell, with protective frames on both the left and right sides of the lower middle part of the sampling shell, a connecting tube in the middle of the lower part of the sampling shell, a sampling bottle at the lower end of the connecting tube, and a sampling mechanism;

[0005] Sampling mechanism: It includes a connector, limiting groove, limiting claw, limiting head, limiting protrusion, and collection assembly. The lower end of the outer surface of the connecting tube is provided with a bearing, and the connector is set on the outer surface of the bearing. The limiting grooves are respectively opened on the left and right sides of the lower end of the outer surface of the connector. The limiting claws are respectively slidably connected to the middle of the protective frame near the middle of the connector. The limiting heads are all set at the upper middle of the limiting claws near the middle of the connector. The outer surface of the limiting heads is slidably connected to the inner wall of the vertically adjacent limiting groove. The limiting protrusions are respectively set on the left and right sides of the middle of the outer surface of the sampling bottle. The limiting protrusions are all installed in cooperation with the vertically adjacent limiting claws, providing a basis for connecting and disassembling the sampling bottle. The collection assembly is set on the lower front side of the inner end of the sampling shell and is equipped with a sampling mechanism. The gas guide tube is integrated with the sampling shell and is stored in the mounting groove. It is portable and the gas guide tube is not easy to lose. It can also quickly connect and disassemble the sampling bottle by moving the limiting claws up and down, improving the gas sampling efficiency.

[0006] Furthermore, the sampling mechanism also includes a fixing component, which includes a slide, a post, a lever, a knob, and a socket. The slide is located at the lower center of the front side of the sampling housing. The post is slidably connected to the rear side inside the slide. The lever is slidably connected to the front side inside the slide. The rear end of the lever is fixedly connected to the front upper surface of the post. The knob is fixedly sleeved on the upper upper surface of the connector. The socket is located at the front upper inside of the knob. The lower end of the post's outer surface is slidably connected to the inner wall of the socket, providing a basis for fixing and releasing the connector.

[0007] Furthermore, the sampling mechanism also includes a groove and a sealing gasket. The groove is located in the middle of the side of the limiting claw near the middle of the connector. The outer surface of the limiting protrusion is fitted with the inner wall of the groove. The sealing gasket is located at the lower end of the connecting tube. The lower end of the sealing gasket fits against the upper end of the sampling bottle. The groove provides a clearance effect for the limiting protrusion, and the sealing gasket provides a sealing effect for the connection of the sampling bottle.

[0008] Furthermore, the collection component includes a mounting groove, an air guide tube, and a notch. The mounting groove is located at the upper end of the sampling housing, the air guide tube is snapped into the interior of the mounting groove, and the notch is located at the center of the front side of the sampling housing, providing a basis for the storage and release of the air guide tube.

[0009] Furthermore, it also includes a vacuum pump, which is located in the middle of the lower part of the sampling housing. The input end of the vacuum pump is electrically connected to the output end of the microcontroller. The exhaust port of the vacuum pump is connected to the upper end of the connecting pipe through air pipe one, and the air guide pipe is connected to the suction port of the vacuum pump through air pipe two, providing a driving effect for gas sampling.

[0010] Furthermore, a temperature and pressure sensor and a flow sensor are connected in series between the gas guide tube and the gas pump. The rear end of the temperature and pressure sensor is fixedly connected to the upper right side of the rear side wall of the sampling housing, and the rear end of the flow sensor is fixedly connected to the upper left side of the rear side wall of the sampling housing. Both the temperature and pressure sensor and the flow sensor are bidirectionally electrically connected to the microcontroller, providing a basis for real-time monitoring of temperature and pressure changes and flow rate changes during gas sampling.

[0011] Furthermore, it also includes a battery and a microcontroller. The battery is located in the middle of the inside of the sampling housing, and the microcontroller is located in the middle of the front side of the sampling housing. The input terminal of the microcontroller is electrically connected to the output terminal of the battery to provide control for the gas sampling operation.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This gas sampler has the following advantages:

[0013] 1. The air delivery tube is integrated with the sampling housing. The air delivery tube can be quickly stored through the mounting slot and quickly snapped out through the notch. It is portable and the air delivery tube is not easy to lose, completely avoiding the loss of the separate air delivery tube in traditional equipment.

[0014] 2. By squeezing the limiting head through the limiting groove, the two limiting claws can move up and down simultaneously. By turning the knob, the connecting head and the limiting groove can be rotated. With the insertion of the insertion post and the insertion hole and the sealing of the sealing gasket, the limiting claws can quickly form a stable squeezing effect on the limiting protrusion, thereby realizing the quick connection and disassembly of the sampling bottle. This avoids the need for multiple rotations of the sampling bottle in traditional equipment and improves the gas sampling efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the sampling shell of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the temperature and pressure sensor and the flow sensor of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the fixing component of this utility model;

[0019] Figure 5 This is an exploded structural diagram of the sampling mechanism of this utility model.

[0020] In the diagram: 1. Sampling housing, 2. Protective frame, 3. Connecting tube, 4. Sampling bottle, 5. Sampling mechanism, 51. Connector, 52. Limiting groove, 53. Limiting claw, 54. Limiting head, 55. Limiting protrusion, 56. Fixing component, 561. Sliding groove, 562. Insert post, 563. Paddle, 564. Knob, 565. Insertion hole, 57. Groove, 58. Sealing gasket, 59. Collection component, 591. Mounting groove, 592. Air guide tube, 593. Notch, 6. Bearing, 7. Temperature and pressure sensor, 8. Flow sensor, 9. Battery, 10. Microcontroller, 11. Air pump. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This embodiment provides a technical solution: a gas sampler, including a sampling shell 1, with protective frames 2 on both the left and right sides of the lower middle part of the sampling shell 1. The protective frames 2 have a triangular hollow structure inside for the installation and protection of the equipment structure. A connecting pipe 3 is provided in the middle of the lower part of the sampling shell 1, and a sampling bottle 4 is provided at the lower end of the connecting pipe 3. A one-way valve is provided at the mouth of the sampling bottle 4. The one-way valve is a common one-way valve structure in the prior art. It also includes a battery 9 and a microcontroller 10. The battery 9 is located in the middle of the inside of the sampling shell 1, and the microcontroller 10 is located in the middle of the front side of the sampling shell 1. The input end of the microcontroller 10 is electrically connected to the output end of the battery 9 to provide control for the gas sampling operation. It also includes a sampling mechanism 5.

[0023] Sampling mechanism 5 includes a connector 51, a limiting groove 52, a limiting claw 53, a limiting head 54, a limiting protrusion 55, and a collection component 59. A bearing 6 is provided at the lower end of the outer surface of the connecting tube 3. The connector 51 is located on the outer surface of the bearing 6. The inner wall of the inner ring of the bearing 6 is fixedly connected to the middle of the outer surface of the connecting tube 3, and the outer surface of the outer ring of the bearing 6 is fixedly connected to the upper end of the inner wall of the connector 51. The bearing 6 provides rotational support for the rotation of the connector 51. Limiting grooves 52 are respectively opened on the left and right sides of the lower end of the outer surface of the connector 51. Both limiting grooves 52 are distributed in an inclined state. The front end of the right limiting groove 52 is higher than the rear end, and the front end of the left limiting groove 52 is lower than the rear end. The inclination direction of both limiting grooves 52 is clockwise with one end higher and counterclockwise with the other end lower. Limiting claws 53 are slidably connected to the middle of the side of the protective frame 2 near the middle of the connector 51. Limiting heads 54 are all located at the upper middle of the side of the limiting claws 53 near the middle of the connector 51. The outer surface of each limiting head 54 is slidably connected to the inner wall of the vertically adjacent limiting groove 52. The limiting head 54 is a spherical head to reduce friction. Limiting protrusions 55 are respectively located on the left and right sides of the middle of the outer surface of the sampling bottle 4. Each limiting protrusion 55 is installed in conjunction with the vertically adjacent limiting claw 53. The lower end of the limiting protrusion 55 fits against the upper end of the limiting claw 53, providing a basis for connecting and disassembling the sampling bottle 4. The sampling mechanism 5 also includes a fixing component 56, which includes a sliding groove 561, a post 562, a lever 563, a knob 564, and a socket 565. 61 is located at the lower center of the front side of the sampling housing 1. A post 562 is slidably connected to the rear side of the inner side of the slide groove 561. A lever 563 is slidably connected to the front side of the inner side of the slide groove 561. The rear end of the lever 563 is fixedly connected to the upper front side of the outer surface of the post 562. A knob 564 is fixedly sleeved on the upper front side of the outer surface of the connector 51. A socket 565 is located at the upper front side of the inner side of the knob 564. The lower end of the outer surface of the post 562 is slidably connected to the inner wall of the socket 565. There is significant friction between the outer surfaces of the post 562 and the lever 563 and the slide groove 561. When moving the post 562 and the lever 563, force is required to push the lever 563 to overcome the friction. Alternatively, a certain friction can be formed between the post 562 and the lever 563. The entire assembly is internally fixed with bolts. These bolts are threadedly connected to the internal structure formed by the insert 562 and the lever 563. When the assembly formed by the insert 562 and the lever 563 moves into place, the bolts are rotated, causing them to move backward until their rear end is against the rear side wall of the slide 561. This achieves rigid fixation of the assembly formed by the insert 562 and the lever 563, providing a basis for the fixing and releasing of the connector 51. The sampling mechanism 5 also includes grooves 57 and sealing gaskets 58. Grooves 57 are all located in the middle of the side of the limiting claw 53 near the middle of the connector 51. The outer surface of the limiting protrusion 55 is fitted with the inner wall of the groove 57. The sealing gasket 58 is located at the lower end of the connecting tube 3, and its lower end is against the upper end of the sampling bottle 4.The groove 57 provides a clearance effect for the limiting protrusion 55, the sealing gasket 58 provides a sealing effect for the connection of the sampling bottle 4, and the collection component 59 is set inside the lower front of the sampling shell 1. The collection component 59 includes a mounting groove 591, a gas guide tube 592, and a notch 593. The mounting groove 591 is opened at the upper end of the sampling shell 1, and the gas guide tube 592 is snapped into the inside of the mounting groove 591. The gas guide tube 592 is made of metal serpentine tube material and can be bent into any shape. The notch 593 is opened in the middle of the front side of the sampling shell 1, providing a basis for the storage and release of the gas guide tube 592. It also includes a suction pump 11, which is set inside the lower middle of the sampling shell 1. The input end of the suction pump 11 is electrically connected to the output end of the microcontroller 10, and the exhaust port of the suction pump 11 is connected to the upper end of the connecting pipe 3 through a gas pipe. The gas guide tube 592 is connected to the suction port of the air pump 11 via the second air tube, providing a driving effect for gas sampling. A temperature and pressure sensor 7 and a flow sensor 8 are connected in series between the gas guide tube 592 and the air pump 11. The rear end of the temperature and pressure sensor 7 is fixedly connected to the upper right side of the rear wall of the sampling housing 1, and the rear end of the flow sensor 8 is fixedly connected to the upper left side of the rear wall of the sampling housing 1. Both the temperature and pressure sensor 7 and the flow sensor 8 are bidirectionally electrically connected to the microcontroller 10, providing a basis for real-time monitoring of temperature, pressure, and flow changes during gas sampling. A sampling mechanism 5 is provided, with the gas guide tube 592 integrated with the sampling housing 1. The gas guide tube 592 is stored in the mounting slot 591, making it portable and less prone to loss. The sampling bottle 4 can also be quickly connected and disconnected via the up-and-down movement of the limiting claw 53, improving gas sampling efficiency.

[0024] The working principle of the gas sampler provided by this utility model is as follows: When performing gas sampling, first connect the sampling bottle 4 and place it vertically at the lower end of the connector 51, so that the limiting protrusion 55 and the limiting claw 53 are offset by 90 degrees. Move the sampling bottle 4 upward so that the mouth of the sampling bottle 4 is inserted into the connector 51 until the upper end of the limiting protrusion 55 is in contact with the lower end of the connector 51. At this time, the upper end of the mouth of the sampling bottle 4 is also initially in contact with the lower end of the connecting tube 3 and the sealing gasket 58. Rotate the sampling bottle 4 by 90 degrees, and the limiting protrusion 55 will also rotate accordingly. The groove 57 provides support for the rotation of the limiting protrusion 55. The avoidance effect ensures that the limiting protrusion 55 and the limiting claw 53 are vertically adjacent. Rotating the knob 564 clockwise causes the connector 51 to rotate. As the connector 51 rotates, the limiting groove 52 also rotates. Since the inclination direction of both limiting grooves 52 is clockwise (higher end) and counterclockwise (lower end), as the limiting groove 52 rotates, it presses the corresponding limiting head 54 upwards, and the limiting claw 53 also moves upwards. When the upper end of the limiting claw 53 contacts the lower end of the limiting protrusion 55, the insertion hole 565 on the knob 564 is aligned with the insertion post 562. Pushing the lever 563 downwards forcefully causes the insertion post 562 to move downwards against friction. The insertion continues until the lower end of the outer surface of the insertion post 562 is inserted into the insertion hole 565. At this point, the knob 564 and the connector 51 are limited and cannot be deflected left or right. The limiting protrusion 55 is squeezed by the two limiting claws 53. The upper end of the sampling bottle 4 is tightly pressed against the lower end of the connecting tube 3 and the sealing gasket 58, forming a sealing effect and completing the connection of the sampling bottle 4. Then, the air guide tube 592 is pulled out from the inside of the mounting groove 591 through the notch 593 with fingers. Then, the air guide tube 592 is bent into a certain shape according to the actual situation. Holding the entire device, the end of the air guide tube 592 is aligned with the sampling area. The microcontroller 10 controls the air pump 11 to work and pump air. When pump 11 operates, the gas in the sampling area is drawn into the second gas tube from the end of the gas guide tube 592. As it passes through the temperature and pressure sensor 7 and the flow sensor 8, the temperature and pressure sensor 7 detects the changes in the gas temperature and pressure in real time, and the flow sensor 8 detects the changes in the gas flow rate in real time. The detected data is sent to the microcontroller 10. Then, driven by the air pump 11, the gas passes through the first gas tube and the connecting tube 3 and enters the upper part of the sampling bottle 4. As the gas continues to enter, the pressure at the upper part of the sampling bottle 4 increases, which opens the valve disc of the one-way valve at the bottle opening of the sampling bottle 4. The gas enters the sampling bottle 4 and is stored, thus realizing the gas sampling work.

[0025] It is worth noting that the microcontroller 10 disclosed in the above embodiments is an STM8L152C8T6 microcontroller, the air pump 11 is a GMPA air pump, the temperature and pressure sensor 7 is a SIN-PD500 temperature and pressure sensor, and the flow sensor 8 is an FS5001L gas flow sensor. The microcontroller 10 controls the operation of the air pump 11, the temperature and pressure sensor 7, and the flow sensor 8 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gas sampling instrument comprising a sampling shell (1), the left and right sides of the middle of the lower end of the sampling shell (1) are provided with protective frames (2), the middle of the lower end of the inside of the sampling shell (1) is provided with a connecting pipe (3), the lower end of the connecting pipe (3) is provided with a sampling bottle (4), characterized in that: It also includes a sampling mechanism (5); Sampling mechanism (5): It includes a connector (51), a limiting groove (52), a limiting claw (53), a limiting head (54), a limiting protrusion (55), and a collection component (59). The lower end of the outer surface of the connecting tube (3) is provided with a bearing (6). The connector (51) is located on the outer surface of the bearing (6). The limiting groove (52) is respectively opened on the left and right sides of the lower end of the outer surface of the connector (51). The limiting claw (53) is slidably connected to the protective frame (2) near the connector (51). In the middle of one side of the middle, the limiting head (54) is located at the upper middle of the limiting claw (53) near the middle of the connecting head (51). The outer surface of the limiting head (54) is slidably connected to the inner wall of the vertically adjacent limiting groove (52). The limiting protrusion (55) is located on the left and right sides of the middle of the outer surface of the sampling bottle (4). The limiting protrusion (55) is installed in cooperation with the vertically adjacent limiting claw (53). The collection component (59) is located on the lower front side of the inner side of the sampling shell (1).

2. The gas sampling instrument of claim 1, wherein: It also includes a battery (9) and a microcontroller (10). The battery (9) is located in the middle of the inside of the sampling housing (1), and the microcontroller (10) is located in the middle of the front side of the sampling housing (1). The input terminal of the microcontroller (10) is electrically connected to the output terminal of the battery (9).

3. The gas sampling instrument of claim 1, wherein: The sampling mechanism (5) further includes a fixing component (56), which includes a slide (561), a post (562), a lever (563), a knob (564), and a socket (565). The slide (561) is located at the lower middle of the front side of the sampling housing (1). The post (562) is slidably connected to the rear side inside the slide (561). The lever (563) is slidably connected to the front side inside the slide (561). The rear end of the lever (563) is fixedly connected to the front side of the upper outer surface of the post (562). The knob (564) is fixedly sleeved on the upper outer surface of the connector (51). The socket (565) is located at the front side of the upper inner end of the knob (564). The lower end of the outer surface of the post (562) is slidably connected to the inner wall of the socket (565).

4. The gas sampling instrument of claim 1, wherein: The sampling mechanism (5) also includes a groove (57) and a sealing gasket (58). The groove (57) is located on the middle side of the limiting claw (53) near the middle of the connector (51). The outer surface of the limiting protrusion (55) is fitted with the inner wall of the groove (57). The sealing gasket (58) is located at the lower end of the connecting tube (3). The lower end of the sealing gasket (58) is attached to the upper end of the sampling bottle (4).

5. The gas sampling instrument of claim 2, wherein: The collection component (59) includes a mounting groove (591), an air guide tube (592), and a notch (593). The mounting groove (591) is located at the upper end of the sampling shell (1), the air guide tube (592) is snapped into the interior of the mounting groove (591), and the notch (593) is located at the middle of the front side of the sampling shell (1).

6. A gas sampling instrument according to claim 5, wherein: It also includes a vacuum pump (11), which is located in the middle of the lower end of the sampling housing (1). The input end of the vacuum pump (11) is electrically connected to the output end of the microcontroller (10). The exhaust port of the vacuum pump (11) is connected to the upper end of the connecting pipe (3) through the first air pipe. The air guide pipe (592) is connected to the suction port of the vacuum pump (11) through the second air pipe.

7. A gas sampling instrument according to claim 6, wherein: A temperature and pressure sensor (7) and a flow sensor (8) are connected in series between the air duct (592) and the air pump (11). The rear end of the temperature and pressure sensor (7) is fixedly connected to the upper right side of the rear side wall of the sampling housing (1), and the rear end of the flow sensor (8) is fixedly connected to the upper left side of the rear side wall of the sampling housing (1). Both the temperature and pressure sensor (7) and the flow sensor (8) are bidirectionally electrically connected to the microcontroller (10).

Images