Narrow space gas sampling device

Abstract

The utility model discloses a narrow space gas sampling device which comprises a main gas box, the inner part of the main gas box is divided into four branch gas boxes, opposite angles of two side walls of the main gas box are fixedly connected with gas outlets respectively, the gas outlets are communicated with the branch gas boxes, four corners of the bottom of the main gas box are fixedly provided with supporting legs, and the middle of the top surface of the main gas box is fixedly provided with four gas inlet cores; the four corners of the top face of the main gas box are provided with stand columns, the tops of the stand columns are fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a collecting mechanism, and the middle of the main gas box is fixedly connected with a switching mechanism. The situation that multiple sets of collecting devices are carried in a narrow space to conduct repeated operation, and consequently work efficiency is reduced is avoided, workers do not need to enter a pipeline any more, and therefore the situation that people inhale harmful gas in the pipeline and hurt the body is avoided.

Description

Technical Field

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

[0002] With the development of cities, the content of toxic gases in the air is getting higher and higher. It is particularly important to collect gases regularly for testing to monitor changes in air quality. In addition to the sampling and testing of gases in the daily environment, the content of harmful gases in some specific spaces such as the complex underground pipelines in the city cannot be ignored. Samples are generally collected in multiple groups at a time for testing and comparison. In addition, the space in the city's underground pipelines is small, and it becomes extremely difficult to carry multiple gas collection devices at a time to carry out gas collection work. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In order to solve the above problems, the present utility model is proposed.

[0005] Therefore, the purpose of the present invention is to provide a gas sampling device for a narrow space. By placing the device in a pipeline, four groups of gas samples can be collected at one time, avoiding the need to carry multiple groups of collection devices for repeated operations in a narrow space and reducing work efficiency.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A gas sampling device for a narrow space comprises a main gas box, the interior of the main gas box is divided into four sub-gas boxes, the diagonals of both side walls of the main gas box are fixedly connected with gas outlets, the gas outlets are communicated with the sub-gas boxes, the four corners of the bottom of the main gas box are fixed with supporting legs, the middle of the top surface of the main gas box is fixedly provided with four air intake cores, the air intake cores are communicated with the sub-gas boxes, the four corners of the top surface of the main gas box are provided with columns, the tops of the columns are fixedly connected with support plates, the tops of the support plates are fixedly connected with a collection mechanism, the middle of the main gas box is fixedly connected with a conversion mechanism, the collection mechanism comprises an air pump, the air pump is fixed on the top surface of the support plate, the air inlet end of the air pump is fixedly connected with an air inlet pipe, the air outlet end of the air pump is fixedly connected with a hose, the other end of the hose is fixedly connected with a connecting rod, the bottom surface of the connecting rod is fixedly connected with a connecting pipe, and the other end of the connecting pipe is fixedly connected with an outlet The air head and the conversion mechanism include a motor, which is fixed at the bottom of the main air box, and a screw rod is fixedly connected to the power output end of the motor, which is rotatably connected to a rotating tube, and one end of the rotating tube is fixedly connected to the other end of the connecting rod, and the rotating tube is fixedly connected to a guide assembly, which includes a guide rod, which is fixed to the other end of the rotating tube, and a guide tube is fixedly connected to the middle of the top surface of the main air box, and four vertical guide rails are equidistantly provided on the inner wall of the guide tube, and a horizontal guide rail is provided on the upper end of the vertical guide rail. The guide rod moves in the vertical guide rail and the horizontal guide rail, and a blocking member is fixed at the corner of the vertical guide rail and the horizontal guide rail, and the blocking member includes a blocking column, and a blocking hole is provided on the upper side wall of the vertical guide rail, and the blocking column moves in the blocking hole. A spring is fixed at one end of the blocking column, and the other end of the spring is fixed to the bottom of the blocking hole.

[0008] As a preferred solution of the narrow space gas sampling device of the present invention, a hanging ring is fixedly connected to the middle of the four side walls of the main gas box.

[0009] Compared with the existing technology, the utility model has the following beneficial effects: four gas distribution boxes are provided, gas is collected into the gas distribution boxes through a collection mechanism, and the collection mechanism is switched to other gas distribution boxes through a conversion component to achieve the collection of four groups of gas samples at one time, avoiding the need to carry multiple groups of collection devices for repeated operations in a small space and reduce work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive labor. Among them:

[0011] Figure 1 This is a schematic diagram of the overall structure of a gas sampling device for a narrow space according to the present invention;

[0012] Figure 2This is a schematic diagram of the conversion mechanism structure of a gas sampling device for a narrow space according to the present invention;

[0013] Figure 3 This utility model is a gas sampling device for a narrow space Figure 3 Schematic diagram of the structure of part A in FIG;

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of a gas sampling device for a narrow space according to the utility model;

[0015] Figure 5 This is a schematic diagram of the guide tube structure of a narrow space gas sampling device of the utility model.

[0016] In the figure: 1. Main air box; 101. Support leg; 102. Column; 103. Support plate; 2. Air distribution box; 3. Air inlet pipe; 4. Air pump; 5. Hose; 6. Connecting pipe; 7. Air outlet head; 8. Air inlet core; 9. Air outlet; 10. Motor; 11. Screw; 12. Guide tube; 1201. Vertical guide rail; 1202. Horizontal guide rail; 1203. Blocking hole; 13. Rotating tube; 1301. Connecting rod; 1302. Guide rod; 14. Blocking column; 15. Spring; 16. Lifting ring. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0018] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] The utility model provides a gas sampling device for a narrow space. By placing the device in a pipeline, four groups of gas samples can be collected at one time, avoiding the need to carry multiple groups of collection devices for repeated operations in a narrow space and reducing work efficiency.

[0021] Figure 1-Figure 5 The figure shows the overall structure of a gas sampling device for a narrow space according to the present invention. Figure 1-Figure 5A gas sampling device for a narrow space in this embodiment includes a main gas box 1, which is divided into four sub-gas boxes 2. The diagonals of the two side walls of the main gas box 1 are fixedly connected with gas outlets 9, which are connected with the sub-gas boxes 2. Support legs 101 are fixed at the four corners of the bottom of the main gas box 1, and four air intake cores 8 are fixedly arranged in the middle of the top surface of the main gas box 1. The air intake core 8 is connected with the sub-gas boxes 2. Columns 102 are provided at the four corners of the top surface of the main gas box 1, and the top of the column 102 is fixedly connected with a support plate 103. The top of the support plate 103 is fixedly connected with a collection mechanism, and the middle of the main gas box 1 is fixedly connected with a conversion mechanism.

[0022] The collection mechanism includes an air pump 4, which is fixed on the top surface of the support plate 103. The air inlet end of the air pump 4 is fixedly connected to the air inlet pipe 3, and the air outlet end of the air pump 4 is fixedly connected to the hose 5. The other end of the hose 5 is fixedly connected to the connecting rod 1301. The bottom surface of the connecting rod 1301 is fixedly connected to the connecting pipe 6. The other end of the connecting pipe 6 is fixedly connected to the air outlet head 7. When the air pump 4 is started, the air pump 4 sucks in the gas from the air inlet pipe 3 and transports it to the air outlet head 7 along the hose 5 and the connecting pipe 6. After the air outlet head 7 is aligned with the air inlet core 8, the gas is transported to the gas distribution box 2.

[0023] The conversion mechanism includes a motor 10, which is fixed at the bottom of the main air tank 1. The power output end of the motor 10 is fixedly connected to the screw rod 11, and the screw rod 11 is rotatably connected to the rotating tube 13. One end of the rotating tube 13 is fixedly connected to the other end of the connecting rod 1301. The rotating tube 13 is fixedly connected to a guide assembly. When the motor 10 is started, the motor 10 drives the screw rod 11 to rotate. The inner wall of the rotating tube 13 is provided with a thread, and the rotating tube 13 is connected to the screw rod 11 through a thread.

[0024] The guide assembly includes a guide rod 1302, which is fixed to the other end of the rotating tube 13. The middle of the top surface of the main air box 1 is fixedly connected to the guide tube 12. The inner wall of the guide tube 12 is equidistantly provided with four vertical guide rails 1201. The upper end of the vertical guide rail 1201 is provided with a transverse guide rail 1202. The guide rod 1302 moves in the vertical guide rail 1201 and the transverse guide rail 1202. A blocking member is fixedly provided at the corner of the vertical guide rail 1201 and the transverse guide rail 1202. Because the guide rod 1302 is initially located in the vertical guide rail 1201, the rotating screw 11 cannot rotate the rotating tube 13 together, and can only move along the vertical guide rail 1201 under the action of the thread. The vertical guide rail 1201 rises, the rotating tube 13 rises, driving the connecting rod 1301 to rise, and the connecting rod 1301 drives the connecting tube 6 and the air outlet head 7 to rise. At this time, the air outlet head 7 is separated from the air intake core 8. When the guide rod 1302 rises to the top of the vertical guide rail 1201, it can no longer rise. At this time, the guide rod 1302 is located in the horizontal guide rail 1202 and begins to rotate with the rotation of the screw rod 11. The guide rod 1302 drives the rotating tube 13 to rotate, and the rotating tube 13 drives the connecting rod 1301 to rotate. The connecting rod 1301 drives the connecting tube 6 and the air outlet head 7 to rotate. After rotating 90 degrees, the air outlet head 7 is located above the adjacent air intake core 8.

[0025] The blocking member includes a blocking column 14, and a blocking hole 1203 is opened on the upper side wall of the vertical guide rail 1201. The blocking column 14 moves in the blocking hole 1203. A spring 15 is fixed to one end of the blocking column 14, and the other end of the spring 15 is fixed to the bottom of the blocking hole 1203. The guide rod 1302 presses the blocking column 14 down along the inclined surface of the blocking column 14, and the blocking column 14 drives the spring 15 to compress. When the guide rod 1302 passes through the blocking column 14, the spring 15 rebounds to cause the blocking column 14 to rise.

[0026] Furthermore, a lifting ring 16 is fixedly connected to the middle of the four side walls of the main gas box 1, which makes it convenient to lift the device from the underground pipeline opening into the pipeline, eliminating the need for manual entry into the pipeline, thereby preventing people from inhaling harmful gases in the pipeline and damaging their bodies.

[0027] Combine Figure 1-Figure 5, a small space gas sampling device of this embodiment, the specific use process is as follows: start the air pump 4, the air pump 4 sucks the gas from the air inlet pipe 3, and transports it to the air outlet head 7 along the hose 5 and the connecting pipe 6. After the air outlet head 7 is aligned with the air inlet core 8, the gas is transported to the gas distribution box 2. When the first gas distribution box 2 is full, start the motor 10, the motor 10 drives the screw rod 11 to rotate, the inner wall of the rotating tube 13 is provided with a thread, and the rotating tube 13 is connected to the screw rod 11 through a thread. Because the guide rod 1302 is initially located in the vertical guide rail 1201, the rotating screw rod 11 The rotating tube 13 cannot be rotated together, and can only rise along the vertical guide rail 1201 under the action of the thread. The rising of the rotating tube 13 drives the connecting rod 1301 to rise, and the connecting rod 1301 drives the connecting tube 6 and the air outlet head 7 to rise. At this time, the air outlet head 7 is separated from the air inlet core 8. When the guide rod 1302 rises to the top of the vertical guide rail 1201, it can no longer rise. At this time, the guide rod 1302 is located in the horizontal guide rail 1202 and starts to rotate with the rotation of the screw rod 11. The guide rod 1302 drives the rotating tube 13 to rotate, and the rotating tube 13 drives the connecting rod 1301 The connecting rod 1301 drives the connecting pipe 6 and the air outlet head 7 to rotate, and the guide rod 1302 presses the blocking column 14 down along the inclined surface of the blocking column 14, and the blocking column 14 drives the spring 15 to compress. When the guide rod 1302 passes the blocking column 14, the spring 15 rebounds and makes the blocking column 14 rise. After rotating 90 degrees, the air outlet head 7 is located above the adjacent air inlet core 8. At this time, the motor 10 starts to reverse, and the motor 10 drives the screw rod 11 to reverse. Because the guide rod 1302 is blocked by the blocking column 14, the guide rod 1302 cannot reverse with the screw rod 11, and can only Under the action of the thread, it begins to descend, the guide rod 1302 drives the rotating tube 13 to descend, the rotating tube 13 drives the connecting rod 1301 to descend, and the connecting rod 1301 drives the connecting tube 6 and the gas outlet head 7 to descend. When the guide rod 1302 descends to the bottom end of the vertical guide rail 1201, the gas outlet head 7 contacts the air inlet core 8 and begins to collect gas in the adjacent gas distribution box 2. Similarly, the gas is collected into four gas distribution boxes 2 respectively, so that four groups of gas samples can be collected at one time, avoiding carrying multiple groups of collection devices for repeated operations in a small space and reducing work efficiency.

[0028] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A gas sampling device for a narrow space, characterized in that: The invention comprises a main air box (1), wherein the main air box (1) is internally divided into four sub-air boxes (2), and air outlets (9) are fixedly connected to the diagonals of the two side walls of the main air box (1), and the air outlets (9) are communicated with the sub-air boxes (2). Support legs (101) are fixed at the four corners of the bottom of the main air box (1), and four air intake cores (8) are fixedly arranged in the middle of the top surface of the main air box (1), and the air intake cores (8) are communicated with the sub-air boxes (2). Columns (102) are arranged at the four corners of the top surface of the main air box (1), and the tops of the columns (102) are fixedly connected to support plates (103), and the tops of the support plates (103) are fixedly connected to a collection mechanism. The middle of the main air box (1) is fixedly connected to a conversion mechanism.

2. A narrow space gas sampling device according to claim 1, characterized in that: The collection mechanism comprises an air pump (4), the air pump (4) is fixed on the top surface of the support plate (103), the air inlet end of the air pump (4) is fixedly connected to the air inlet pipe (3), the air outlet end of the air pump (4) is fixedly connected to the hose (5), the other end of the hose (5) is fixedly connected to the connecting rod (1301), the bottom surface of the connecting rod (1301) is fixedly connected to the connecting pipe (6), and the other end of the connecting pipe (6) is fixedly connected to the air outlet head (7).

3. A narrow space gas sampling device according to claim 2, characterized in that: The conversion mechanism comprises a motor (10), the motor (10) being fixed to the bottom of the main air box (1), the power output end of the motor (10) being fixedly connected to a screw rod (11), the screw rod (11) being rotatably connected to a rotating tube (13), one end of the rotating tube (13) being fixedly connected to the other end of a connecting rod (1301), and the rotating tube (13) being fixedly connected to a guide assembly.

4. A narrow space gas sampling device according to claim 3, characterized in that: The guide assembly comprises a guide rod (1302), the guide rod (1302) being fixed to the other end of the rotating tube (13), a guide tube (12) being fixedly connected to the middle of the top surface of the main air box (1), four vertical guide rails (1201) being equidistantly provided on the inner wall of the guide tube (12), a transverse guide rail (1202) being provided at the upper end of the vertical guide rail (1201), the guide rod (1302) moving within the vertical guide rail (1201) and the transverse guide rail (1202), and a blocking member being fixedly provided at the corner between the vertical guide rail (1201) and the transverse guide rail (1202).

5. A narrow space gas sampling device according to claim 4, characterized in that: The blocking member comprises a blocking column (14), a blocking hole (1203) is provided on the upper side wall of the vertical guide rail (1201), the blocking column (14) moves in the blocking hole (1203), a spring (15) is fixed to one end of the blocking column (14), and the other end of the spring (15) is fixed to the bottom of the blocking hole (1203).

6. A narrow space gas sampling device according to claim 5, characterized in that: A lifting ring (16) is fixedly connected to the middle of the four side walls of the main air box (1).

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