Gas sample collecting device

Abstract

The utility model discloses a gas sample collecting device which comprises a connecting top plate, a sampling gas inlet box arranged on one side of a controller and a miniature vacuum pump arranged on the other side of the controller, a mounting connecting pipe is fixedly mounted at the top end of the gas sampling bottle, a sampling control valve is fixedly mounted at the top end of the mounting connecting pipe, and a three-way connecting valve is fixedly mounted at the top end of the sampling control valve; one side of the sampling gas inlet box is fixedly connected with a gas outlet pipe head, the end part of the gas outlet pipe head is fixedly provided with a connecting pipe head I, and one end of the connecting pipe head I is fixedly provided with a sampling connecting pipe. According to the gas sampling device, the micro vacuum pump and the sampling fan alternately work, so that original gas in the gas sampling bottle is quickly removed, the gas sampling bottle is filled with gas needing to be sampled, the purity of a gas sample is ensured, the collection effect of the gas sample is improved, and the gas sampling speed is increased.

Description

Technical Field

[0001] This utility model relates to the field of gas collection technology, and in particular to a gas sample collection device. Background Technology

[0002] In existing technologies, atmospheric sampling is the process of collecting gas samples or polluted air samples from the atmosphere. Currently, there are two types of on-site sampling methods: one type involves passing a large amount of air through a liquid absorbent or solid adsorbent to enrich pollutants at lower concentrations in the atmosphere, such as the air extraction method or the membrane filtration method. The gas sample is then introduced into the absorbent liquid at a certain flow rate, and its concentration is calculated based on the fixed gas factors in the absorbent liquid. The other type involves collecting gas samples from the corresponding sampling location using containers.

[0003] A search revealed Chinese patent application number 202411845425.2, which discloses an environmental monitoring waste gas collection device, comprising: a collection bottle for storing gas samples; a collection box for storing the collection bottle and providing a closed space, wherein a vent is provided on the side wall of the collection box and a gas collection pipe is provided for introducing gas samples into the collection bottle, the gas collection pipe being slidably disposed within the collection box and sliding in a direction approaching or away from the collection bottle; a drive assembly including a motor fixed to the inner wall of the collection box and a cage gear fixedly connected to the output shaft end of the motor; a first rack for pushing open the vent, the first rack meshing with the cage gear; and a steering assembly for cooperating with the cage gear to drive the gas collection pipe to slide closer to the collection bottle.

[0004] The aforementioned patent has the following shortcomings: the device protects the gas sample collection bottle with a collection box to prevent external air from interfering with the gas sample; however, in actual use, there will be air inside the collection bottle. Replacing the air inside the collection bottle with the collection box is slow and can easily result in residual original gas (the gas that is already present in the collection bottle), affecting the gas sample collection effect. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gas sample collection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas sample collection device, comprising:

[0008] A top plate is connected, and a controller is fixedly installed on its upper surface. A sampling air inlet box is provided on one side of the controller, and a miniature vacuum pump is provided on the other side.

[0009] A gas sampling bottle, wherein an installation connecting pipe is fixedly installed at the top of the gas sampling bottle, a sampling control valve is fixedly installed at the top of the installation connecting pipe, and a three-way connecting valve is fixedly installed at the top of the sampling control valve.

[0010] An outlet pipe head is fixedly connected to one side of the sampling air inlet box. A connecting pipe head is fixedly installed at the end of the outlet pipe head. A sampling connecting pipe is fixedly installed at one end of the connecting pipe head. One end of the sampling connecting pipe is connected to a three-way connecting valve.

[0011] The miniature vacuum pump has an air inlet integrally formed on one side, and a connecting pipe head three is fixedly installed at the end of the air inlet. A vacuum exhaust pipe is fixedly installed at one end of the connecting pipe head three, and one end of the vacuum exhaust pipe is connected to a three-way connecting valve.

[0012] As a further improvement of this utility model: a fan mounting bracket is fixedly installed on the upper side wall of the sampling air intake box, and multiple sampling fans are fixedly installed inside the fan mounting bracket.

[0013] As a further embodiment of this utility model: a connecting top cover is fixedly installed on the top of the sampling air inlet box, and an air inlet connecting hopper is fixedly connected to the top of the connecting top cover.

[0014] As a further improvement of this utility model: an air inlet connecting pipe is fixedly installed at the top of the air inlet connecting hopper, and a wide-mouth sampling head is fixedly installed at the end of the air inlet connecting pipe.

[0015] As a further improvement of this utility model: the top of the micro vacuum pump is integrally formed with an air outlet, the top of the air outlet is fixedly installed with a second connecting pipe head, and the top of the second connecting pipe head is fixedly installed with an exhaust connecting pipe.

[0016] As a further embodiment of this utility model: a fixed mounting column is fixedly installed on the top of the valve body of the three-way connecting valve, and the fixed mounting column is fixedly connected to the lower surface of the connecting top plate.

[0017] As a further embodiment of this utility model: a sample export tube is fixedly connected to the outer wall of the mounting connecting tube, and an export tube sealing column is inserted into the inside of the sample export tube.

[0018] As a further embodiment of this utility model: a connecting protective frame is fixedly connected to the lower surface of the connecting top plate, a plurality of supporting connecting columns are fixedly installed at the bottom end of the connecting protective frame, and a supporting bottom frame is fixedly installed at the bottom end of the supporting connecting columns.

[0019] Compared with the prior art, the present invention provides a gas sample collection device, which has the following beneficial effects:

[0020] This gas sample collection device uses a miniature vacuum pump and a sampling fan to quickly remove the original gas inside the gas sampling bottle and fill the bottle with the gas to be sampled, ensuring the purity of the gas sample, improving the gas sample collection effect, and accelerating the gas sampling speed.

[0021] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0023] Figure 2 This is a partial cross-sectional view of the overall assembly of this utility model.

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0026] Figure 5 This utility model Figure 2 Enlarged structural diagram at point C;

[0027] Figure 6 This utility model Figure 2 A magnified structural diagram at point D.

[0028] In the diagram: 1. Connecting top plate; 2. Connecting protective frame; 3. Supporting connecting column; 4. Supporting bottom frame; 5. Controller; 6. Sampling air inlet box; 7. Connecting top cover; 8. Air inlet connecting hopper; 9. Air inlet connecting pipe; 10. Wide-mouth sampling head; 11. Miniature vacuum pump; 12. Gas sampling bottle; 13. Limiting protrusion ring; 14. Fan mounting bracket; 15. Sampling fan; 16. Air outlet head; 17. Connecting pipe head one; 18. Sampling connecting pipe; 19. Air outlet nozzle; 20. Connecting pipe head two; 21. Exhaust connecting pipe; 22. Air inlet nozzle; 23. Connecting pipe head three; 24. Vacuum exhaust pipe; 25. Installation connecting pipe; 26. Sampling control valve; 27. Three-way connecting valve; 28. Sample outlet pipe; 29. ​​Outlet pipe sealing column; 30. Connecting pipe head four; 31. Connecting clamp; 32. Fixed mounting column. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] A gas sample collection device, such as Figures 1 to 6 The device includes: a top plate 1, a controller 5, a sampling gas inlet box 6, a miniature vacuum pump 11, and a gas sampling bottle 12; the controller 5 controls the start and stop states of the sampling gas inlet box 6 and the miniature vacuum pump 11, the sampling gas inlet box 6 is used to inject gas into the gas sampling bottle 12, and the miniature vacuum pump 11 is used to evacuate the gas sampling bottle 12.

[0031] A connecting protective frame 2 is welded to the lower surface of the connecting top plate 1. Multiple supporting connecting columns 3 are fixedly installed at the bottom end of the connecting protective frame 2, and a supporting bottom frame 4 is fixedly installed at the bottom end of each supporting connecting column 3; For example... Figure 1 As shown, the lower surface of the support frame 4 has multiple universal wheel mounting holes for installing universal wheels, which facilitates the movement of the entire device.

[0032] The controller 5 is fixedly installed in the middle of the upper surface of the connecting top plate 1. The sampling air inlet box 6 is located on one side of the controller 5, and the micro vacuum pump 11 is located on the other side of the controller 5. Both the sampling air inlet box 6 and the micro vacuum pump 11 are fixedly installed on the upper surface of the connecting top plate 1.

[0033] A mounting connection tube 25 is fixedly installed at the top of the gas sampling bottle 12. A sampling control valve 26 is fixedly installed at the top of the mounting connection tube 25. A sample outlet tube 28 is welded to the outer wall of the mounting connection tube 25. An outlet tube sealing column 29 is inserted into the inside of the sample outlet tube 28 to facilitate the discharge of gas inside the gas sampling bottle 12 during testing.

[0034] A three-way connecting valve 27 is fixedly installed on the top of the sampling control valve 26. The sampling control valve 26 is set to be manually opened and closed, and is used to open or close the mouth of the gas sampling bottle 12. The three-way connecting valve 27 is controlled by the controller 5 and is used to switch the state of filling and venting inside the gas sampling bottle 12.

[0035] The valve body of the three-way connecting valve 27 is welded with a connecting sleeve 31. A fixing post 32 is fixedly installed inside the connecting sleeve 31. The fixing post 32 is welded to the lower surface of the connecting top plate 1. Both air outlets of the three-way connecting valve 27 are fixedly installed with connecting pipe heads 30.

[0036] An exhaust pipe head 16 is fixedly connected to the side of the sampling air inlet box 6 away from the controller 5. A connecting pipe head 17 is fixedly installed at the end of the exhaust pipe head 16. A sampling connecting pipe 18 is fixedly installed at one end of the connecting pipe head 17. A through hole 1 is opened at one end of the upper surface of the connecting top plate 1. The sampling connecting pipe 18 passes through the through hole 1 and is connected to one of the connecting pipe heads 30.

[0037] The upper side wall of the sampling air intake box 6 is integrally formed with a limiting protrusion ring 13. A fan mounting bracket 14 is fixedly installed above the limiting protrusion ring 13, and multiple sampling fans 15 are fixedly installed inside the fan mounting bracket 14.

[0038] A connecting top cover 7 is fixedly installed on the top of the sampling air inlet box 6. An inverted air inlet connecting bucket 8 is welded to the top of the connecting top cover 7. An air inlet connecting pipe 9 is fixedly installed on the top of the air inlet connecting bucket 8. A wide-mouth sampling head 10 for easy extraction of gas samples is fixedly installed at the end of the air inlet connecting pipe 9.

[0039] The micro vacuum pump 11 has an air inlet 22 integrally formed on the side away from the controller 5. A connecting pipe head 3 23 is fixedly installed at the end of the air inlet 22. A vacuum exhaust pipe 24 is fixedly installed at one end of the connecting pipe head 3 23. A through hole 2 is opened at the other end of the upper surface of the connecting top plate 1. The vacuum exhaust pipe 24 passes through the through hole 2 and connects to another connecting pipe head 4 30.

[0040] The top of the miniature vacuum pump 11 is integrally formed with an outlet nozzle 19. A connecting pipe head 20 is fixedly installed on the top of the outlet nozzle 19. An exhaust connecting pipe 21 is fixedly installed on the top of the connecting pipe head 20. The exhaust connecting pipe 21 facilitates the discharge of gas from the gas sampling bottle 12.

[0041] Working principle:

[0042] Please refer to Figures 1 to 6 Assemble the device as shown in the figure;

[0043] First, move the device to the designated location and place it stably. Then, install the gas sampling bottle 12, which is equipped with the connecting pipe 25 and the sampling control valve 26, inside the bottom valve port of the three-way connecting valve 27. Next, open the sampling control valve 26. Then, open the valve port of the three-way connecting valve 27 connected to the sampling connecting pipe 18 through the controller 5 and start the sampling fan 15. Then, move the wide-mouth sampling head 10 to the designated gas sample sampling position and continuously fill the gas sampling bottle 12 with the gas to be sampled for three to five minutes. Then, close the three-way connecting valve 27 and the sampling fan 15. Next, open the valve port connecting the three-way connecting valve 27 to the vacuum exhaust pipe 24, and start the micro vacuum pump 11 to evacuate the gas sampling bottle 12. Then close the three-way connecting valve 27 and the micro vacuum pump 11. Next, open the valve port connecting the three-way connecting valve 27 to the sampling connecting pipe 18 again, and start the sampling fan 15 to fill the gas sampling bottle 12 with the gas to be sampled. After three to five minutes, close the three-way connecting valve 27, the sampling fan 15 and the sampling control valve 26 to complete the gas sample sampling. Remove the sampling control valve 26 from the bottom valve port of the three-way connecting valve 27.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas sample collection device, characterized in that, include: A top plate (1) is connected, and a controller (5) is fixedly installed on its upper surface. A sampling air inlet box (6) is provided on one side of the controller (5), and a micro vacuum pump (11) is provided on the other side. A gas sampling bottle (12) is provided with an installation connecting pipe (25) fixedly installed at the top end of the gas sampling bottle (12), a sampling control valve (26) is fixedly installed at the top end of the installation connecting pipe (25), and a three-way connecting valve (27) is fixedly installed at the top end of the sampling control valve (26). An outlet pipe head (16) is fixedly connected to one side of the sampling air inlet box (6). A connecting pipe head (17) is fixedly installed at the end of the outlet pipe head (16). A sampling connecting pipe (18) is fixedly installed at one end of the connecting pipe head (17). One end of the sampling connecting pipe (18) is connected to a three-way connecting valve (27). The micro vacuum pump (11) has an air inlet (22) integrally formed on one side. A connecting pipe head (23) is fixedly installed at the end of the air inlet (22). A vacuum exhaust pipe (24) is fixedly installed at one end of the connecting pipe head (23). One end of the vacuum exhaust pipe (24) is connected to a three-way connecting valve (27).

2. The gas sample collection device according to claim 1, characterized in that: A fan mounting bracket (14) is fixedly installed on the upper side wall of the sampling air intake box (6), and multiple sampling fans (15) are fixedly installed inside the fan mounting bracket (14).

3. The gas sample collection device according to claim 1, characterized in that: The top of the sampling air inlet box (6) is fixedly installed with a connecting top cover (7), and the top of the connecting top cover (7) is fixedly connected with an air inlet connecting bucket (8).

4. A gas sample collection device according to claim 3, characterized in that: An air inlet connecting pipe (9) is fixedly installed at the top of the air inlet connecting hopper (8), and a wide-mouth sampling head (10) is fixedly installed at the end of the air inlet connecting pipe (9).

5. A gas sample collection device according to claim 1, characterized in that: The top of the micro vacuum pump (11) is integrally formed with an air outlet (19), and a connecting pipe head two (20) is fixedly installed on the top of the air outlet (19). An exhaust connecting pipe (21) is fixedly installed on the top of the connecting pipe head two (20).

6. A gas sample collection device according to claim 1, characterized in that: The valve body of the three-way connecting valve (27) is fixedly mounted with a fixed mounting column (32), which is fixedly connected to the lower surface of the connecting top plate (1).

7. A gas sample collection device according to claim 1, characterized in that: The outer wall of the mounting connecting tube (25) is fixedly connected to a sample export tube (28), and an export tube sealing column (29) is inserted into the inside of the sample export tube (28).

8. A gas sample collection device according to claim 1, characterized in that: A connecting protective frame (2) is fixedly connected to the lower surface of the connecting top plate (1), and a plurality of supporting connecting columns (3) are fixedly installed at the bottom end of the connecting protective frame (2), and a supporting bottom frame (4) is fixedly installed at the bottom end of the supporting connecting column (3).

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