A multi-gas sampling device

Abstract

The utility model relates to the technical field of gas sampling devices, and discloses a multi-gas sampling device, including a box body, the top of the box body is provided with an air outlet, the left and right sides of the box body are provided with air inlet holes, the front end middle part of the box body is rotatably connected with a knob, the rear side of the knob penetrates the box body and is fixedly connected with a three-way ball shaft, the left and right sides of the outer wall of the box body are provided with annular grooves, the inner side of the annular groove is rotatably connected with a conical gear ring, the inner side of the air inlet hole is fixedly connected with a positioning ring, the outer wall of the positioning ring is slidably connected with a conical tooth groove plate all around, and the conical tooth groove plate is meshed with the conical tooth ring. In the utility model, through the cooperation between the conical tooth ring, the conical tooth groove plate and the positioning ring, the sampling can be carried out according to the type of the required sampling gas, and through the cooperation between the rotating gear, the rack and the rotating plate, the intake amount of multiple gases can be conveniently controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling devices, in particular to a multi-gas sampling device. Background Art

[0002] Gas injection is a common technique in analytical chemistry, usually used in instruments such as gas chromatography and mass spectrometry. It refers to the process of introducing gas samples into analytical instruments for detection and analysis. In order to facilitate the injection of multiple gases, a multi-gas injection device is required.

[0003] A multi-gas sampling device refers to a sampling system or device that can handle multiple gas samples. This device usually has multiple sampling channels or sampling ports, allowing the user to introduce different types of gas samples for analysis simultaneously or sequentially.

[0004] Currently, most gas sampling devices on the market can only sample a single gas or a fixed number of gas types. When the type of gas to be sampled is different from the device specifications, additional new equipment is required for the sampling operation, which increases the cost of using the device. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a multi-gas sampling device, aiming to improve the problem of sampling a single gas or a fixed number of gas types in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multiple gas sampling device, including a box body, the top of the box body is provided with an air outlet, the left and right sides of the box body are provided with air inlet holes, the middle part of the front end of the box body is rotatably connected with a knob, the rear side of the knob passes through the box body and is fixedly connected with a three-way ball shaft, the left and right sides of the outer wall of the box body are provided with annular grooves, the inner side of the annular groove is rotatably connected with a conical gear ring, the inner side of the air inlet hole is fixedly connected with a positioning ring, the outer wall of the positioning ring is slidably connected with a conical gear plate all around, the conical gear plate is meshed with the conical gear ring, a plurality of indicating grooves are fixedly connected to the front side of the outer wall of the box body, an air pump is fixedly connected to the middle part of the bottom end of the box body, the output end of the air pump passes through the box body, a plurality of pressure-stabilizing valves are arranged on the left side of the top end of the box body, and a quantitative mechanism is arranged at the bottom of the box body.

[0007] As a further description of the above technical solution:

[0008] The quantitative mechanism includes a base, which is connected to the bottom of the box body, and the front and rear sides of the inner wall of the base are slidably connected with racks, and the inner wall of the base is rotatably connected with gears, and the gears are meshed with the racks. The outer side of the gear is fixedly connected with a rotating plate, and the outer side of the rotating plate is rotatably connected with a U-shaped block, the front and rear sides of the outer walls of the two U-shaped blocks are respectively slidably connected with the inner wall of the box body, and the top of the U-shaped block is fixedly connected with a sealing plate.

[0009] As a further description of the above technical solution:

[0010] Positioning blocks are fixedly connected to the outer wall of the base, and positioning holes are formed on the outer sides of the plurality of positioning blocks.

[0011] As a further description of the above technical solution:

[0012] A controller is fixedly connected to the rear side of the box body, and the controller is electrically connected to the air pump.

[0013] As a further description of the above technical solution:

[0014] The outer side of the controller is fixedly connected with a shell, and the outer side of the shell is rotatably connected with a shield.

[0015] As a further description of the above technical solution:

[0016] The front and rear sides of the outer wall of the box body are fixedly connected with handles, and the outer sides of the two handles are fixedly connected with sheaths.

[0017] As a further description of the above technical solution:

[0018] A bucket plate is fixedly connected to the top of the box body, and a baffle is arranged on the inner top of the bucket plate.

[0019] As a further description of the above technical solution:

[0020] The front side of the base is rotatably connected with a handle, and the rear side of the handle penetrates the base and is fixedly connected with the corresponding gear.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the conical tooth ring can be rotated through meshing transmission to drive the conical tooth plate to move along the positioning ring, so as to fix the inner wall or outer wall of the device to be fixed through the conical tooth plate, so that it can be connected with the device. At this time, the knob can be turned according to the number of types of sample gas required to be fed, which can drive the three-way ball shaft to rotate, so that the hole of the three-way ball shaft is connected to the air outlet and one side or two sides of the air inlet. At the same time, the pressure regulating valve can play a role in stabilizing the pressure of nitrogen entering the device. At this time, the three-way ball shaft can be rotated to perform sampling according to the number of types of sample gas required, without the need to equip new equipment, thereby saving the use cost of the device.

[0023] 2. In the utility model, the rack can be driven to move by rotating the gear, and the moving rack can drive all the gears to rotate at the same time. When the gear is rotated, the rotating plate on it can be driven to rotate, and the baffle can be moved up and down by the U-shaped block. The area of ​​the air inlet blocked by the baffle can be adjusted and controlled by moving the baffle to adjust and control the air intake on both sides of the device, so as to control the air intake of various gases, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A top view of a multi-gas sampling device proposed by the utility model;

[0025] Figure 2 This is a bottom view of a multi-gas sampling device proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the box structure of a multi-gas sampling device proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of a pressure-stabilizing valve of a multi-gas injection device proposed by the utility model;

[0028] Figure 5 A schematic diagram of the gas outlet structure of a multi-gas sampling device proposed by the utility model;

[0029] Figure 6 A three-dimensional diagram of a multi-gas sampling device proposed by the utility model;

[0030] Figure 7 A schematic diagram of the handle structure of a multi-gas sampling device proposed by the utility model;

[0031] Figure 8 The utility model provides a quantitative mechanism schematic diagram of a multi-gas sampling device.

[0032] Legend:

[0033] 1. Box body; 2. Dosing mechanism; 201. Rack; 202. Gear; 203. Rotating plate; 204. U-shaped block; 205. Sealing plate; 206. Base; 3. Air inlet; 4. Air outlet; 5. Three-way ball shaft; 6. Air pump; 7. Annular groove; 8. Conical gear ring; 9. Positioning ring; 10. Conical gear groove plate; 11. Knob; 12. Indicator groove; 13. Bucket plate; 14. Baffle; 15. Controller; 16. Housing; 17. Shield; 18. Handle; 19. Sheath; 20. Grip; 21. Positioning block; 22. Positioning hole; 23. Pressure regulating valve. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1-Figure 8 , the utility model provides an embodiment: a multiple gas sampling device, including a box body 1, the top of the box body 1 is provided with an air outlet 4, the left and right sides of the box body 1 are provided with air inlet 3, the front middle part of the box body 1 is rotatably connected with a knob 11, the rear side of the knob 11 penetrates the box body 1 and is fixedly connected with a three-way ball shaft 5, the left and right sides of the outer wall of the box body 1 are provided with annular grooves 7, the inner side of the annular groove 7 is rotatably connected with a conical gear ring 8, the inner side of the air inlet 3 is fixedly connected with a positioning ring 9, the outer wall of the positioning ring 9 is slidably connected with a conical tooth groove plate 10, the conical tooth groove plate 10 is meshed with the conical gear ring 8, the front side of the outer wall of the box body 1 is fixedly connected with a plurality of indicating grooves 12, the middle part of the bottom end of the box body 1 is fixedly connected with an air pump 6, the output end of the air pump 6 penetrates the box body 1, a plurality of pressure-stabilizing valves 23 are arranged on the left side of the top of the box body 1, and a quantitative mechanism 2 is arranged at the bottom of the box body 1;

[0036] Specifically, by rotating the conical gear ring 8, the conical tooth plate 10 is moved along the positioning ring 9 through meshing transmission, thereby fixing the inner wall or outer wall of the required equipment to connect with the device, and turning the knob 11 drives the three-way ball shaft 5 to rotate according to the number of types of required injection gas, and connects its hole with the outlet hole 4 and the injection hole 3 on one side or both sides. At the same time, the pressure-stabilizing valve 23 can stabilize the pressure of nitrogen entering the device. In this way, by adjusting the rotation of the three-way ball shaft 5, injection can be carried out according to the required type of injection gas. If additional equipment is required, it needs to be equipped separately.

[0037] Reference Figure 1-Figure 8The quantitative mechanism 2 includes a base 206, which is connected to the bottom of the box body 1. The front and rear sides of the inner wall of the base 206 are slidably connected with the rack 201. The inner wall of the base 206 is rotatably connected with the gear 202. The gear 202 is meshed with the rack 201. The outer side of the gear 202 is fixedly connected with a rotating plate 203. The outer side of the rotating plate 203 is rotatably connected with a U-shaped block 204. The front and rear sides of the outer walls of the two U-shaped blocks 204 are respectively slidably connected with the inner wall of the box body 1. The top of the U-shaped block 204 is fixedly connected with a sealing plate 205.

[0038] Specifically, by rotating the gear 202, the rack 201 can be caused to move, and this movement can drive all the gears 202 to rotate at the same time. When the gear 202 rotates, it will drive the rotating plate 203 thereon to rotate, and through the adjustment of the U-shaped block 204, the sealing plate 205 can be moved up and down. By moving the sealing plate 205, the area of ​​the air inlet 3 blocked by it can be adjusted, thereby controlling the air intake of the air inlet 3 on both sides of the device. This mechanism can be used to adjust and control the air intake of multiple gases, so that the device can more flexibly adapt to different needs and environmental conditions.

[0039] Reference Figure 1-Figure 8 , positioning blocks 21 are fixedly connected to the outer wall of the base 206, and positioning holes 22 are opened on the outer sides of the plurality of positioning blocks 21; a controller 15 is fixedly connected to the rear side of the box body 1, and the controller 15 is electrically connected to the air pump 6; a housing 16 is fixedly connected to the outer side of the controller 15, and a shield 17 is rotatably connected to the outer side of the housing 16;

[0040] Specifically, by installing a threaded part in the positioning hole 22 on the outside of the positioning block 21, the device can be easily installed and fixed. The start-up and operating power of the air pump 6 can be controlled by the controller 15. The protection capability of the controller 15 can be improved by the outer shell 16. By opening and closing the protective cover 17, the controller 15 can be prevented from being accidentally touched when not in use.

[0041] Reference Figure 1-Figure 8 The front and rear sides of the outer wall of the box body 1 are fixedly connected with handles 18, and the outer sides of the two handles 18 are fixedly connected with sheaths 19; the top of the box body 1 is fixedly connected with a bucket plate 13, and the inner top of the bucket plate 13 is provided with a baffle 14; the front side of the base 206 is rotatably connected with a handle 20, and the rear side of the handle 20 passes through the base 206 and is fixedly connected with the corresponding gear 202;

[0042] Specifically, the holding handle 18 can facilitate the movement and storage of the device, the sheath 19 thereon can improve the comfort of holding, the bucket plate 13 can reduce the probability of gas leakage when docking with the air outlet 4, the baffle 14 can prevent external dust from entering the device through the air outlet 4 when the device is not in use, and the handle 20 can facilitate the rotation of the gear 202.

[0043] Working principle: Before using the device, first rotate the conical gear ring 8, and through meshing transmission, the conical tooth plate 10 can be moved along the positioning ring 9. This movement enables the conical tooth plate 10 to be fixed on the inner wall or outer wall of the device to be fixed and connected to the device. At the same time, according to the number of types of sample gas required, turn the knob 11 to drive the three-way ball shaft 5 to rotate, so that the hole of the three-way ball shaft 5 can be connected to the outlet hole 4 and one or both sides of the inlet hole 3. By rotating the three-way ball shaft 5, the pressure regulating valve 23 can stabilize the pressure of nitrogen entering the device. Samples can be injected according to the number of types of sample gas required. It should be noted that If additional equipment is needed, new equipment will be required, thereby saving the cost of using the device, and by rotating the gear 202, the rack 201 will move, driving all the gears 202 to rotate at the same time. Such movement can cause the rotating plate 203 on the gear 202 to start rotating, and through the action of the U-shaped block 204, the up and down movement of the sealing plate 205 is adjusted. By adjusting the position of the sealing plate 205, the area of ​​the air inlet 3 blocked by it can be changed, thereby controlling the air intake of the air inlet 3 on both sides of the device. This design allows the air intake of multiple gases to be adjusted and controlled, making the device more flexible and suitable for different environments and needs, thereby improving the practicality of the device.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-gas sampling device, comprising a housing (1), characterized in that: The top of the box body (1) is provided with an air outlet (4), the left and right sides of the box body (1) are provided with air inlet holes (3), the middle part of the front end of the box body (1) is rotatably connected with a knob (11), the rear side of the knob (11) passes through the box body (1) and is fixedly connected with a three-way ball shaft (5), the left and right sides of the outer wall of the box body (1) are provided with annular grooves (7), the inner side of the annular groove (7) is rotatably connected with a conical gear ring (8), the inner side of the air inlet hole (3) is fixedly connected with a positioning ring (9), The outer wall of the positioning ring (9) is slidably connected to a conical tooth plate (10) on all sides, and the conical tooth plate (10) is meshingly connected to the conical tooth ring (8). The front side of the outer wall of the box body (1) is fixedly connected to a plurality of indicating grooves (12). The middle part of the bottom end of the box body (1) is fixedly connected to an air pump (6), and the output end of the air pump (6) passes through the box body (1). A plurality of pressure-stabilizing valves (23) are arranged on the left side of the top end of the box body (1), and a quantitative mechanism (2) is arranged at the bottom of the box body (1).

2. A multi-gas sampling device according to claim 1, characterized in that: The quantitative mechanism (2) comprises a base (206), the base (206) being connected to the bottom of the box body (1), the front and rear sides of the inner wall of the base (206) being slidably connected to racks (201), the inner wall of the base (206) being rotatably connected to gears (202) all around, the gears (202) being meshingly connected to the racks (201), the outer side of the gear (202) being fixedly connected to a rotating plate (203), the outer side of the rotating plate (203) being rotatably connected to a U-shaped block (204), the front and rear sides of the outer walls of the two U-shaped blocks (204) being respectively slidably connected to the inner wall of the box body (1), and the top of the U-shaped block (204) being fixedly connected to a sealing plate (205).

3. A multi-gas sampling device according to claim 2, characterized in that: Positioning blocks (21) are fixedly connected to the outer wall of the base (206) on all sides, and positioning holes (22) are formed on the outer sides of the plurality of positioning blocks (21).

4. A multi-gas sampling device according to claim 1, characterized in that: A controller (15) is fixedly connected to the rear side of the box body (1), and the controller (15) is electrically connected to the air pump (6).

5. A multi-gas sampling device according to claim 4, characterized in that: The outer side of the controller (15) is fixedly connected to a housing (16), and the outer side of the housing (16) is rotatably connected to a protective cover (17).

6. A multi-gas sampling device according to claim 1, characterized in that: The front and rear sides of the outer wall of the box body (1) are fixedly connected with handles (18), and the outer sides of the two handles (18) are fixedly connected with protective covers (19).

7. A multi-gas sampling device according to claim 1, characterized in that: A bucket plate (13) is fixedly connected to the top of the box body (1), and a baffle plate (14) is provided on the inner top of the bucket plate (13).

8. A multi-gas sampling device according to claim 2, characterized in that: The front side of the base (206) is rotatably connected to a handle (20), and the rear side of the handle (20) passes through the base (206) and is fixedly connected to the corresponding gear (202).

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