Gas sampling device for atmosphere detection

Abstract

The utility model discloses a gas sampling device for atmosphere detection, which relates to the technical field of sampling devices and comprises a gas inlet pipe, a connecting sleeve is fixedly sleeved on the outer wall of one end of the gas inlet pipe, a limiting sleeve is sleeved outside the connecting sleeve, and a support plate is arranged at one end, close to the connecting sleeve, in the limiting sleeve. The outer wall of the supporting plate is sleeved with a filtering cotton sleeve, the limiting sleeve is arranged on the outer wall of the connecting sleeve in a covering mode, the supporting plate and the filtering cotton sleeve are arranged between the position in the limiting sleeve and the position of the connecting sleeve, the filtering cotton sleeve can filter atmosphere entering from the air inlet more completely, and large and small particles can be better filtered; and the supporting plate can support the filtering cotton sleeve, and the meshes can conduct the atmosphere filtered by the filtering cotton sleeve into the air inlet pipe, so that the whole filtering effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and in particular to a gas sampling device for atmospheric detection. Background Technology

[0002] According to the application number "CN202220353956.X", it is achieved by sampling tube, drive motor, partition plate and fixed slide plate. The drive motor drives the screw to rotate through the drive gear. The screw partition plate is threadedly connected, which in turn drives the sealing piston and fixed slide plate to move, which facilitates gas extraction, sampling, and buffering, and improves work efficiency.

[0003] This is achieved through a trachea, sealing steel balls, a support plate, and a fitting ring. The sealing steel balls, sealing springs, and fitting rings in the air intake and exhaust assemblies work together to allow for unidirectional air intake and exhaust, which facilitates sampling, prevents gas from escaping, facilitates gas collection, and improves sampling efficiency.

[0004] In the process of implementing this solution, the inventors discovered the following problems in the existing technology that have not been adequately addressed: the air intake structure inside the air intake pipe is a one-way valve type with a filter screen at the end. The filter screen can only filter larger particles and cannot filter smaller particles. If a filter screen with a larger mesh size is used to filter smaller particles, clogging will occur. When clogging occurs, the filter screen is difficult to disassemble, resulting in a significant reduction in the amount of air entering the system, which affects subsequent use. Utility Model Content

[0005] The main objective of this invention is to provide a gas sampling device for atmospheric detection, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An atmospheric gas sampling device includes an air inlet pipe. A connecting sleeve is fixedly fitted onto the outer wall of one end of the air inlet pipe. A limiting sleeve is fitted onto the outside of the connecting sleeve. A support plate is provided inside the limiting sleeve near the end of the connecting sleeve. A filter cotton sleeve is fitted onto the outer wall of the support plate. An annular groove is chiseled at the end of the outer wall of the connecting sleeve away from the support plate. A sealing rubber is fitted inside the annular groove. An annular groove is chiseled on the inner wall of the limiting sleeve at the position of the annular groove. A sealing rubber is embedded inside the annular groove. An air inlet is chiseled at the end of the limiting sleeve away from the annular groove. A plurality of mesh holes are chiseled on the side wall of the support plate.

[0008] Preferably, the end of the filter cotton sleeve that extends beyond the support plate is fitted onto the end of the connecting sleeve that is away from the annular groove.

[0009] Preferably, the inner wall of the second sealing rubber is in contact with the outer wall of the first sealing rubber, and the outer diameter of the first sealing rubber is larger than the outer diameter of the connecting sleeve.

[0010] Preferably, the outer wall of the second sealing rubber is bonded to the inner wall of the second annular groove, and the inner wall of the first sealing rubber is in contact with the outer wall of the first annular groove.

[0011] Preferably, the connecting sleeve has an annular slot on the side near the support plate, and an annular block is fixed to the side wall of the support plate at the location of the annular slot. The annular slot is inserted into the annular block of a matching size.

[0012] Preferably, a baffle is fixed at the end of the connecting sleeve away from the limiting sleeve, and the side wall of the limiting sleeve is in contact with the baffle.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The limiting sleeve cover is located on the outer wall of the connecting sleeve. A support plate and a filter cotton sleeve are installed between the position of the limiting sleeve and the connecting sleeve. The filter cotton sleeve can filter the air entering at the air inlet more completely, and particles of all sizes can be filtered better. The support plate can not only support the filter cotton sleeve, but its mesh can also conduct the air filtered by the filter cotton sleeve into the air inlet pipe, which greatly increases the overall filtration effect.

[0015] 2. When the limiting sleeve is fitted onto the outer wall of the connecting sleeve, the sealing rubber II located in the annular groove II can contact the sealing rubber I located in the annular groove I of the connecting sleeve, so that the limiting sleeve can be stably fitted onto the outer wall of the connecting sleeve, ensuring a tight and stable limiting and pressing effect on the filter cotton sleeve. At the same time, it also has the effect of easy disassembly. After it is removed from the outside of the connecting sleeve, the filter cotton sleeve can be easily replaced, ensuring that it can have a good filtration effect in subsequent gas sampling after the filter cotton sleeve is replaced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a gas sampling device for atmospheric detection according to the present invention;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a gas sampling device for atmospheric detection according to the present invention;

[0018] Figure 3 This is a schematic diagram of the structure between the support plate, filter cotton, and limiting sleeve of an atmospheric gas sampling device according to the present invention.

[0019] Figure 4This is a cross-sectional view of the filter cotton of an atmospheric gas sampling device for atmospheric detection, and its relationship with the support plate, connecting sleeve, and air inlet pipe.

[0020] Figure 5 This is a cross-sectional view of sealing rubber 1 and sealing rubber 2 for an atmospheric gas sampling device according to the present invention.

[0021] In the diagram: 1. Inlet pipe; 2. Connecting sleeve; 21. Annular groove one; 22. Sealing rubber one; 23. Annular slot; 24. Baffle; 3. Support plate; 31. Mesh; 32. Annular block; 4. Filter cotton sleeve; 5. Limiting sleeve; 51. Annular groove two; 52. Sealing rubber two; 53. Inlet. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1-5 As shown, a gas sampling device for atmospheric detection includes an air inlet pipe 1. A connecting sleeve 2 is fixedly fitted on the outer wall of one end of the air inlet pipe 1. A limiting sleeve 5 is fitted on the outside of the connecting sleeve 2. A support plate 3 is provided inside the limiting sleeve 5 near the end of the connecting sleeve 2. A filter cotton sleeve 4 is fitted on the outer wall of the support plate 3. An annular groove 21 is chiseled on the outer wall of the connecting sleeve 2 away from the support plate 3. A sealing rubber 22 is fitted inside the annular groove 21. An annular groove 51 is chiseled on the inner wall of the limiting sleeve 5 at the position of the annular groove 21. A sealing rubber 52 is embedded inside the annular groove 51. An air inlet 53 is chiseled on the end of the limiting sleeve 5 away from the annular groove 51. A plurality of mesh holes 31 are chiseled on the side wall of the support plate 3.

[0024] Specifically, the filter cotton sleeve 4 is fitted over the support plate 3 at one end and onto the outside of the connecting sleeve 2 at the end away from the annular groove 21 to ensure the integrity of filtration and avoid omissions.

[0025] Specifically, the inner wall of sealing rubber 252 contacts the outer wall of sealing rubber 122, and the outer diameter of sealing rubber 122 is larger than the outer diameter of connecting sleeve 2 to ensure stability after installation and prevent detachment.

[0026] Specifically, the outer wall of sealing rubber 252 is bonded to the inner wall of annular groove 251, and the inner wall of sealing rubber 12 is in contact with the outer wall of annular groove 121, ensuring a tight connection between them.

[0027] Specifically, an annular slot 23 is cut into the side of the connecting sleeve 2 near the support plate 3. An annular block 32 is fixed to the side wall of the support plate 3 at the position of the annular slot 23. The annular slot 23 is inserted into the annular block 32 of a matching size, so that the support plate 3 can stably support the filter cotton sleeve 4 and avoid displacement.

[0028] Specifically, a baffle 24 is fixed at the end of the connecting sleeve 2 away from the limiting sleeve 5. The side wall of the limiting sleeve 5 is in contact with the side wall of the baffle 24. When the limiting sleeve 5 contacts the baffle 24, the installation is complete.

[0029] Working principle: The limiting sleeve 5 is fitted onto the outer wall of the connecting sleeve 2. A support plate 3 and a filter cotton sleeve 4 are located between the limiting sleeve 5 and the connecting sleeve 2. The filter cotton sleeve 4 can more completely filter the air entering at the air inlet 53, achieving better filtration of particles of all sizes. The support plate 3 not only supports the filter cotton sleeve 4, but its mesh 31 also allows the filtered air to be conducted into the air inlet pipe 1, greatly increasing the overall filtration effect. The limiting sleeve 5 is fitted onto the connecting sleeve... When the sleeve 5 is placed on the outer wall of the cylinder 2, the sealing rubber 52 located in the annular groove 51 can contact the sealing rubber 22 located in the annular groove 21 of the connecting sleeve 2, so that the limiting sleeve 5 can be stably fitted on the outer wall of the connecting sleeve 2, ensuring a tight and stable limiting and pressing effect on the filter cotton sleeve 4. At the same time, it also has the effect of easy disassembly. After it is removed from the outside of the connecting sleeve 2, the filter cotton sleeve 4 can be easily replaced, ensuring that it can have a good filtration effect in the later gas sampling after the filter cotton sleeve 4 is replaced.

[0030] The circuits, electronic components, and control modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas sampling device for atmospheric detection, comprising an inlet pipe (1), characterized in that: A connecting sleeve (2) is fixedly fitted on the outer wall of one end of the air intake pipe (1). A limiting sleeve (5) is fitted on the outside of the connecting sleeve (2). A support plate (3) is provided inside the limiting sleeve (5) near the connecting sleeve (2). A filter cotton sleeve (4) is fitted on the outer wall of the support plate (3). An annular groove (21) is chiseled on the outer wall of the connecting sleeve (2) away from the support plate (3). A sealing rubber (22) is fitted inside the annular groove (21). An annular groove (51) is chiseled on the inner wall of the limiting sleeve (5) at the position of the annular groove (21). A sealing rubber (52) is embedded inside the annular groove (51). An air inlet (53) is chiseled on the end of the limiting sleeve (5) away from the annular groove (51). Several mesh holes (31) are chiseled on the side wall of the support plate (3).

2. The gas sampling device for atmospheric detection according to claim 1, characterized in that: The filter cotton sleeve (4) is fitted over the support plate (3) at one end and outside the connecting sleeve (2) away from the annular groove (21).

3. The gas sampling device for atmospheric detection according to claim 1, characterized in that: The inner wall of the second sealing rubber (52) is in contact with the outer wall of the first sealing rubber (22), and the outer diameter of the first sealing rubber (22) is larger than the outer diameter of the connecting sleeve (2).

4. The gas sampling device for atmospheric detection according to claim 1, characterized in that: The outer wall of the sealing rubber two (52) is bonded to the inner wall of the annular groove two (51), and the inner wall of the sealing rubber one (22) is in contact with the outer wall of the annular groove one (21).

5. A gas sampling device for atmospheric detection according to claim 1, characterized in that: The connecting sleeve (2) has an annular slot (23) on the side near the support plate (3). The support plate (3) has an annular block (32) fixed on the side wall of the annular slot (23). The annular slot (23) is inserted into the annular block (32) of a matching size.

6. The gas sampling device for atmospheric detection according to claim 1, characterized in that: A baffle (24) is fixed at one end of the connecting sleeve (2) away from the limiting sleeve (5), and the side wall of the limiting sleeve (5) is in contact with the side wall of the baffle (24).

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