Gas detection and collection device

Abstract

The utility model relates to the field of gas detection, in particular to a gas detection and collection device which comprises a base, a hollow supporting column is installed on the base, the supporting column extends vertically, an inner threaded pipe which is driven by an adjusting motor and rotates around the axis of the inner threaded pipe is rotatably installed at the upper end of the supporting column, and the inner threaded pipe extends vertically. A vertically extending adjusting pipe is arranged in the internal threaded pipe in a penetrating manner, an external thread matched with the internal threaded pipe is arranged on the adjusting pipe, a sliding block is fixedly mounted on the outer wall of the lower end of the adjusting pipe, the sliding block is vertically mounted in the supporting column in a sliding manner, a gas inlet pipe extending in the radial direction of the adjusting pipe is fixedly mounted at the upper end of the adjusting pipe, and the lower end of the adjusting pipe is connected with a gas detection instrument; the adjusting motor drives the internal threaded pipe to rotate, the internal threaded pipe acts on the external thread on the adjusting pipe so as to drive the adjusting pipe to move up and down relative to the supporting column, then the adjusting pipe drives the air inlet pipe to ascend or descend, and therefore gas at different heights is collected through the air inlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of gas detection, specifically to a gas detection and acquisition device. Background Technology

[0002] In some working environments, such as tunnels, underground pipelines, mines, confined spaces, or spaces that have undergone renovation work, there is often a problem of environmental gas pollution. In such cases, it is necessary to detect toxic and harmful gases.

[0003] The prior art is disclosed in the utility model patent with application number CN202320456318.5, which discloses a gas collection device for detecting VOCs in the atmospheric environment. The device includes a collection device body, an air inlet pipe fixedly connected to the top of the collection device body, a collection hood fixedly connected to the surface of the air inlet pipe, and the air inlet pipe penetrating through the wall of the collection hood and fixedly connected thereto. In use, the drive motor is first started, and the fan blades are rotated under the action of the drive motor. At this time, some air will enter the air inlet pipe, and then the air is detected under the action of the collection device body.

[0004] However, the height of the collection hood in the aforementioned gas collection device is fixed and cannot be adjusted, making it impossible to collect gas at different heights, thus causing inaccurate gas detection results. Utility Model Content

[0005] The purpose of this invention is to provide a gas detection and collection device that facilitates the collection of gas at different altitudes, thereby addressing the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas detection and collection device includes a base, on which a hollow support column is mounted. The support column extends vertically, and an internally threaded tube driven by an adjusting motor and rotating about its own axis is rotatably mounted at the upper end of the support column. The internally threaded tube extends vertically, and a vertically extending adjusting tube passes through the internally threaded tube. The adjusting tube has an external thread that matches the internally threaded tube. A slider is fixedly mounted on the outer wall of the lower end of the adjusting tube and slides vertically inside the support column. An air inlet pipe extending radially is fixedly mounted at the upper end of the adjusting tube, and the lower end of the adjusting tube is connected to a gas detection instrument.

[0008] As a further improvement, the inner wall of the support column is provided with a vertically extending protrusion, and the slider is provided with a guide groove that matches the protrusion.

[0009] As a further improvement, a vertically extending connecting pipe is fixedly installed at the lower end of the support column. The internally threaded pipe and the connecting pipe respectively vertically penetrate the upper and lower ends of the adjusting pipe. A telescopic pipe is connected between the lower end of the adjusting pipe and the upper end of the connecting pipe. The lower end of the connecting pipe is connected to the gas detection instrument through a flexible hose.

[0010] As a further improvement, the support column is rotatably mounted on the base, the base having a mounting cavity, a swing arm fixedly mounted on the support column within the mounting cavity, a drive motor mounted within the mounting cavity, a turntable coaxially mounted on the motor shaft of the drive motor, a first pin fixedly mounted eccentrically on the top of the turntable, a second pin fixedly mounted eccentrically to the support column on the swing arm, and a connecting rod hinged between the first pin and the second pin.

[0011] As a further improvement, a driven gear is fixedly installed on the internally threaded tube, and a driving gear that meshes with the driven gear is fixedly installed on the motor shaft of the adjusting motor.

[0012] As a further improvement, the base is equipped with casters at its bottom.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application uses an adjustable motor to drive the internal threaded tube to rotate. The internal threaded tube acts on the external thread on the adjusting tube, thereby causing the adjusting tube to move up and down relative to the support column. In turn, the adjusting tube drives the air inlet pipe to rise or fall, thereby collecting gas at different heights through the air inlet pipe and improving the accuracy of gas detection results.

[0015] 2. This application uses a drive motor to drive a turntable to rotate. The turntable drives a support column to rotate back and forth within a certain angle via a connecting rod. The support column drives the regulating tube to rotate synchronously, thereby continuously changing the orientation of the air intake pipe. The air intake pipe is used to uniformly collect the surrounding gas, further improving the accuracy of the gas detection results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A magnified view of part I;

[0019] Figure 3 This is a schematic diagram of the internal structure of the support column according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the slider structure according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the base according to an embodiment of the present invention.

[0022] In the diagram: 1-Base; 2-Support column; 3-End cap; 4-Internal threaded pipe; 5-Motor bracket; 6-Adjusting motor; 7-Driven gear; 8-Driving gear; 9-Slider; 10-Protrusion; 11-Guide groove; 12-Inlet pipe; 13-Connecting pipe; 14-Telescopic pipe; 15-Hose; 16-Gas detector; 17-Mounting cavity; 18-Swing arm; 19-Drive motor; 20-Turntable; 21-First pin; 22-Second pin; 23-Connecting rod; 24-Moving wheel; 25-Adjusting pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] like Figures 1 to 5 As shown, a gas detection and collection device includes a base 1, on which a hollow support column 2 is mounted. The base 1 is hollow, and the support column 2 is rotatably mounted on the top wall of the base 1 via bearings. The support column 2 extends vertically, and end caps 3 are fixedly mounted at its upper and lower ends by bolts. An internally threaded tube 4 is rotatably mounted on the end cap 3 at the upper end of the support column 2 via bearings. The internally threaded tube 4 vertically penetrates the upper end cap 3. A motor bracket 5 is welded to the upper side of the support column 2, and an adjusting motor 6 is mounted on the motor bracket 5 by bolts. A driven gear 7 located outside the support column 2 is fixedly mounted on the upper end of the internally threaded tube 4. A driving gear 8 that meshes with the driven gear 7 is fixedly mounted on the motor shaft of the adjusting motor 6. The adjusting motor 6 can drive the internally threaded tube 4 to rotate around its own axis.

[0025] like Figure 2 and Figure 3As shown, an adjusting tube 25 extending vertically is inserted into the internally threaded tube 4. The outer wall of the adjusting tube 25 is provided with an external thread that matches the internally threaded tube 4. The lower end of the adjusting tube 25 extends into the support column 2, and a slider 9 is fixedly installed on its outer wall by bolts. The slider 9 is circular and matches the inner cavity of the support column 2. The slider 9 is vertically slidably installed in the support column 2. The inner wall of the support column 2 is provided with an integrally formed vertically extending protrusion 10. The slider 9 is provided with a guide groove 11 that matches the protrusion 10, which can prevent the slider 9 from rotating in the support column 2.

[0026] like Figure 3 and Figure 4 As shown, the upper end of the regulating pipe 25 is closed, and an air inlet pipe 12 extending radially is welded to the side of the upper end of the regulating pipe 25. Multiple air inlet pipes 12 are evenly spaced around the regulating pipe 25. A vertically penetrating connecting pipe 13 is fixedly installed on the end cap 3 at the lower end of the support column 2 by bolts. A telescopic pipe 14 is connected between the lower end of the regulating pipe 25 and the upper end of the connecting pipe 13. The lower end of the connecting pipe 13 is connected to the gas detection instrument 16 through a flexible hose 15.

[0027] The gas detector 16 is equipped with a vacuum pump and a gas sensor. Under the suction action of the vacuum pump, the outside gas enters the gas detector 16 through the inlet pipe 12, regulating pipe 25, telescopic pipe 14, connecting pipe 13 and flexible hose 15 in sequence. The gas sensor then detects the gas entering the gas detector 16.

[0028] During gas detection, the internal threaded tube 4 can be rotated by adjusting the motor 6. The internal threaded tube 4 acts on the external thread on the adjusting tube 25, thereby causing the adjusting tube 25 to move up and down relative to the support column 2. In turn, the adjusting tube 25 causes the air inlet pipe 12 to rise or fall, so that gas at different heights can be collected through the air inlet pipe 12, thereby improving the accuracy of gas detection results.

[0029] like Figure 5 As shown, the base 1 has a mounting cavity 17, and the lower end of the support column 2 extends into the mounting cavity 17. A pre-drilled hole for the flexible hose 15 to pass through is provided on one side of the mounting cavity 17. A swing arm 18 located in the mounting cavity 17 is fixedly mounted on the support column 2 by bolts. A drive motor 19 is mounted in the mounting cavity 17 by bolts. The motor axis of the drive motor 19 extends upward and a turntable 20 is fixedly mounted coaxially. A first pin 21 is eccentrically fixedly mounted on the top of the turntable 20, and a second pin 22 eccentrically mounted on the bottom of the swing arm 18 is fixedly mounted on the bottom of the swing arm 18. A connecting rod 23 is hinged between the first pin 21 and the second pin 22.

[0030] During gas detection, the drive motor 19 drives the turntable 20 to rotate. The turntable 20 drives the support column 2 to rotate back and forth within a certain angle through the connecting rod 23. The support column 2 drives the regulating pipe 25 to rotate synchronously, thereby continuously changing the orientation of the air inlet pipe 12. The air inlet pipe 12 is used to uniformly collect the surrounding gas, further improving the accuracy of the gas detection results.

[0031] To facilitate the movement of the gas detection and collection device, casters 24 are installed at the bottom of the base 1.

[0032] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas detection collection device, characterized by: The device includes a base on which a hollow support column is mounted. The support column extends vertically, and an internally threaded tube driven by an adjusting motor and rotating around its own axis is rotatably mounted on the upper end of the support column. The internally threaded tube extends vertically, and an adjusting tube extends vertically through the internally threaded tube. The adjusting tube has an external thread that matches the internally threaded tube. A slider is fixedly mounted on the lower outer wall of the adjusting tube and slides vertically inside the support column. An air inlet pipe extending radially is fixedly mounted on the upper end of the adjusting tube, and the lower end of the adjusting tube is connected to a gas detection instrument.

2. The gas detection collection device of claim 1, wherein: The inner wall of the support column is provided with a vertically extending protrusion, and the slider is provided with a guide groove that matches the protrusion.

3. The gas detection collection device of claim 1, wherein: A vertically extending connecting pipe is fixedly installed at the lower end of the support column. The internally threaded pipe and the connecting pipe respectively penetrate vertically through the upper and lower ends of the adjusting pipe. A telescopic pipe is connected between the lower end of the adjusting pipe and the upper end of the connecting pipe. The lower end of the connecting pipe is connected to the gas detection instrument through a flexible hose.

4. The gas detection and acquisition device as described in claim 1, characterized in that: A support column is rotatably mounted on the base, and the base has a mounting cavity. A swing arm located in the mounting cavity is fixedly mounted on the support column. A drive motor is installed in the mounting cavity. A turntable is coaxially fixedly mounted on the motor shaft of the drive motor. A first pin is eccentrically fixedly mounted on the top of the turntable. A second pin, eccentrically positioned with respect to the support column, is fixedly mounted on the swing arm. A connecting rod is hinged between the first pin and the second pin.

5. The gas detection collection device of claim 1, wherein: A driven gear is fixedly installed on the internally threaded pipe, and a driving gear that meshes with the driven gear is fixedly installed on the motor shaft of the adjusting motor.

6. The gas detection collection device of claim 1, wherein: The base is equipped with casters.

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