Air sampler for constructional engineering

Abstract

The air sampler comprises a disc, bottom columns, a bottom plate, universal wheels and fixing cylinders, the bottom columns are fixedly connected to the bottom of the disc, the bottom columns are annularly arranged and distributed, the bottom plate is fixedly connected to the lower ends of the bottom columns, the universal wheels are movably connected to the bottom of the bottom plate, and the fixing cylinders are fixedly connected to the bottom of the disc. The fixed cylinder is fixedly connected to the top of the disc, and the device further comprises an auxiliary positioning assembly, a fixed-length telescopic assembly and a collection assembly. The utility model belongs to the technical field of sampling equipment, and particularly relates to an air sampler for constructional engineering, which solves the problem that the existing air sampler is inconvenient in actual use due to certain limitation in the aspects of support and air sampling flexibility.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling equipment, and in particular relates to an air sampler for construction engineering. Background Art

[0002] During the construction process at a construction site, due to the outdoor working environment, dust on the site is blown up by the movement of motor vehicles, and fog cannons are often used for spray dust reduction. Although spray dust reduction can alleviate dust pollution, it is only effective during the spray operation and for a short period of time afterwards. Once the fog cannon operation is stopped, the large amount of wet dust on the surface will gradually disperse under the sunlight.

[0003] Therefore, in construction projects, real-time sampling and observation in multiple on-site environments are required. Existing air samplers are mostly fixed in design, which have certain limitations in terms of support and air sampling flexibility, resulting in inconvenience in actual use. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing air samplers have certain limitations in terms of support and air sampling flexibility, resulting in inconvenience in actual use.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an air sampler for construction engineering, including a disc, a base column, a base plate, a universal wheel and a fixed cylinder, the base column is fixedly connected to the bottom of the disc, the base columns are arranged in a ring shape, the base plate is fixedly connected to the lower end of the base column, the universal wheel is movably connected to the bottom of the base plate, the fixed cylinder is fixedly connected to the top of the disc, and also includes an auxiliary positioning component, a fixed-length telescopic component and a collection component, the auxiliary positioning component is arranged at the bottom of the disc, the fixed-length telescopic component is arranged on the fixed cylinder, and the collection component is arranged above the fixed-length fixed cylinder. First, the auxiliary positioning component is used to provide a stable support for the overall position, and then the fixed-length telescopic component is used to adaptively adjust the height of the collection component, and finally the collection component is used to collect and sample the air.

[0006] Furthermore, the auxiliary positioning assembly includes an electric push rod, a triangular plate and an insert cone, the electric push rod is fixedly installed at the center of the bottom of the disc, the triangular plate is fixedly connected to the free end of the electric push rod, the insert cone is fixedly connected to the bottom of the triangular plate, the insert cones are arranged in a ring shape, a guide column is fixedly connected to the top of the triangular plate, the upper end of the guide column passes through the disc and is slidably connected to it, the guide columns are arranged in a ring shape, and a connecting ring is fixedly connected to the upper end of the guide column.

[0007] Furthermore, the fixed-length telescopic assembly includes a center column, an adjusting disk and an adjusting cylinder. The center column is rotatably connected to the inner bottom wall of the fixed cylinder. Bevel gear 2 is fixedly connected to the center column. The adjusting disk passes through one side of the fixed cylinder and is rotatably connected thereto. Bevel gear 1 is fixedly connected to one end of the adjusting disk. Bevel gear 1 and bevel gear 2 are meshed with each other. The adjusting cylinder passes through the upper end of the center column and is threadedly connected thereto. The upper end of the adjusting cylinder passes through the upper end of the fixed cylinder and is slidably connected thereto.

[0008] Furthermore, a limit groove is provided on the inner wall of the adjusting cylinder, a limit block is fixedly connected to the outer wall of the adjusting cylinder, the limit block is slidably arranged inside the limit groove, a through hole is provided on the adjusting disk, a positioning disk is fixedly connected to the outer wall of the fixed cylinder, the positioning disk is provided with positioning grooves arranged in an annular manner, and the positioning grooves and the through holes are adapted to each other.

[0009] Furthermore, the collection component includes a collection box, a collection pump and a sampling tube. The collection box is fixedly connected to the upper end of the adjusting cylinder, the collection pump is fixedly installed on one side of the collection box, the collection cover is fixedly installed on the input end of the collection pump, the output end of the collection pump is arranged inside the collection box, and a solenoid valve is installed on the output end of the collection pump, the sampling tube is fixedly installed on one side of the collection box, a one-way valve is installed in the middle position of the sampling tube, and an air pressure sensor is fixedly installed inside the collection box.

[0010] Furthermore, the outer side wall of the insert cone may be provided with threads.

[0011] After adopting the above structure, the utility model has the following beneficial effects:

[0012] (1) The whole body can be kept in a static state during sampling, so that the whole body has stable supporting performance;

[0013] (2) The height of the collection box can be flexibly adjusted and quickly positioned to complete air sampling at different heights;

[0014] (3) By setting up a solenoid valve and a one-way valve, the air inside the collection box can be prevented from escaping, thereby ensuring the sampling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of an air sampler for construction engineering proposed by the utility model;

[0017] Figure 2 This is a front view of an air sampler for construction engineering proposed by the utility model;

[0018] Figure 3 This is a three-dimensional structural schematic diagram of an air sampler for construction engineering proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of a collection box of an air sampler for construction engineering proposed by the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the internal structure of a fixed cylinder of an air sampler for construction engineering proposed by the utility model.

[0021] In the attached drawings: 1. disc, 2. bottom column, 3. bottom plate, 4. universal wheel, 5. fixed cylinder, 6. electric push rod, 7. triangular plate, 8. insert cone, 9. guide column, 10. connecting ring, 11. center column, 12. adjusting disk, 13. adjusting cylinder, 14. bevel gear 2, 15. bevel gear 1, 16. limit groove, 17. limit block, 18. through hole, 19. positioning disk, 20. positioning groove, 21. collection box, 22. collection pump, 23. sampling tube, 24. collection cover, 25. solenoid valve, 26. one-way valve, 27. air pressure sensor. DETAILED DESCRIPTION

[0022] like Figure 1-2 As shown, an air sampler for construction engineering includes a disc 1, a base column 2, a base plate 3, a universal wheel 4 and a fixed cylinder 5. The base column 2 is fixedly connected to the bottom of the disc 1, and the base columns 2 are arranged in a ring shape. The base plate 3 is fixedly connected to the lower end of the base column 2, the universal wheel 4 is movably connected to the bottom of the base plate 3, and the fixed cylinder 5 is fixedly connected to the top of the disc 1. It also includes an auxiliary positioning component, a fixed-length telescopic component and a collection component. The auxiliary positioning component is arranged at the bottom of the disc 1, the fixed-length telescopic component is arranged on the fixed cylinder 5, and the collection component is arranged above the fixed-length fixed cylinder 5.

[0023] like Figure 1-5 As shown, in order to make the whole have stable supporting performance, the auxiliary positioning assembly includes an electric push rod 6, a triangular plate 7 and an insert cone 8. The electric push rod 6 is fixedly installed at the bottom center of the disc 1, the triangular plate 7 is fixedly connected to the free end of the electric push rod 6, the insert cone 8 is fixedly connected to the bottom of the triangular plate 7, and the insert cone 8 is arranged in a ring shape. A guide column 9 is fixedly connected to the top of the triangular plate 7. The upper end of the guide column 9 passes through the disc 1 and is slidably connected thereto. The guide columns 9 are arranged in a ring shape, and a connecting ring 10 is fixedly connected to the upper end of the guide column 9.

[0024] like Figure 1-5As shown, in order to be able to sample air at different heights, the fixed-length telescopic assembly includes a center column 11, an adjusting disk 12 and an adjusting cylinder 13. The center column 11 is rotatably connected to the inner bottom wall of the fixed cylinder 5. A bevel gear 2 14 is fixedly connected to the center column 11. The adjusting disk 12 passes through one side of the fixed cylinder 5 and is rotatably connected thereto. A bevel gear 15 is fixedly connected to one end of the adjusting disk 12. The bevel gear 15 and the bevel gear 2 14 are meshed with each other. The adjusting cylinder 13 passes through the upper end of the center column 11 and is threadedly connected thereto. The upper end of the adjusting cylinder 13 passes through the upper end of the fixed cylinder 5 and is slidably connected thereto. A limiting groove 16 is provided on the inner wall of the adjusting cylinder 13. A limiting block 17 is fixedly connected to the outer wall of the adjusting cylinder 13. The limiting block 17 is slidably arranged inside the limiting groove 16. A through hole 18 is provided on the adjusting disk 12. A positioning disk 19 is fixedly connected to the outer wall of the fixed cylinder 5. The positioning disk 19 is provided with positioning grooves 20 arranged in an annular manner. The positioning grooves 20 and the through holes 18 are adapted to each other.

[0025] like Figure 1-5 As shown, in order to improve the effect of air sampling, the collection component includes a collection box 21, a collection pump 22 and a sampling tube 23. The collection box 21 is fixedly connected to the upper end of the regulating cylinder 13, the collection pump 22 is fixedly installed on one side of the collection box 21, the collection cover 24 is fixedly installed on the input end of the collection pump 22, the output end of the collection pump 22 is arranged inside the collection box 21, and the output end of the collection pump 22 is installed with a solenoid valve 25, the sampling tube 23 is fixedly installed on one side of the collection box 21, a one-way valve 26 is installed in the middle position of the sampling tube 23, and an air pressure sensor 27 is fixedly installed inside the collection box.

[0026] The outer wall of the insert cone 8 may be provided with threads, and a support plate with a flat bottom may be screwed onto the lower end of the insert cone 8 according to the ground conditions to complete the support on the cement floor.

[0027] During specific use, when performing air sampling operations on the land, after moving the whole to a suitable position, the electric push rod 6 is controlled to extend so that multiple cones 8 move down and insert into the soil to provide stable support for the whole. When the triangular plate 7 moves down, it drives the guide column 9 and the connecting ring 10 to move down, thereby increasing the stability of the cone 8 inserted into the soil. Then, the adjusting disk 12 is rotated, and the rotation of the bevel gear 15 can make the bevel gear and the center column 11 rotate. The rotation of the center column 11 makes the adjusting cylinder 13 move up under the limiting guiding action of the limiting groove 16 and the limiting block 17. After the height adjustment is completed, the pin is inserted into the corresponding positioning groove 20 through the through hole 18 to lock the adjusted height. Then, the collection pump 22 is turned on to collect the air into the collection box. The air pressure sensor 27 monitors the air pressure inside the collection box. When taking out the sample, it is connected to the sampling tube 23, and the one-way valve 26 is opened to extract the sampled air.

[0028] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. An air sampler for construction engineering, comprising a disc, a bottom column, a bottom plate, a universal wheel and a fixed cylinder, wherein the bottom column is fixedly connected to the bottom of the disc, the bottom columns are arranged in a ring shape, the bottom plate is fixedly connected to the lower end of the bottom column, the universal wheel is movably connected to the bottom of the bottom plate, and the fixed cylinder is fixedly connected to the top of the disc, characterized in that: It also includes an auxiliary positioning component, a fixed-length telescopic component and a collection component. The auxiliary positioning component is arranged at the bottom of the disc, the fixed-length telescopic component is arranged on the fixed cylinder, and the collection component is arranged above the fixed-length fixed cylinder. First, the auxiliary positioning component is used to provide stable support for the overall position, and then the fixed-length telescopic component is used to adaptively adjust the height of the collection component, and finally the collection component is used to collect and sample the air.

2. The air sampler for construction engineering according to claim 1, characterized in that: The auxiliary positioning assembly includes an electric push rod, a triangular plate and an insert cone. The electric push rod is fixedly installed at the center of the bottom of the disc. The triangular plate is fixedly connected to the free end of the electric push rod. The insert cone is fixedly connected to the bottom of the triangular plate. The insert cones are arranged in a ring shape. A guide column is fixedly connected to the top of the triangular plate. The upper end of the guide column penetrates the disc and is slidably connected to it. The guide columns are arranged in a ring shape. A connecting ring is fixedly connected to the upper end of the guide column.

3. An air sampler for construction engineering according to claim 2, characterized in that: The fixed-length telescopic assembly includes a center column, an adjusting disk and an adjusting cylinder. The center column is rotatably connected to the bottom wall of the fixed cylinder. Bevel gear 2 is fixedly connected to the center column. The adjusting disk passes through one side of the fixed cylinder and is rotatably connected thereto. Bevel gear 1 is fixedly connected to one end of the adjusting disk. Bevel gear 1 is meshed with bevel gear 2. The adjusting cylinder passes through the upper end of the center column and is threadedly connected thereto. The upper end of the adjusting cylinder passes through the upper end of the fixed cylinder and is slidably connected thereto.

4. The air sampler for construction engineering according to claim 3, characterized in that: A limit groove is provided on the inner wall of the adjusting cylinder, a limit block is fixedly connected to the outer wall of the adjusting cylinder, the limit block is slidably arranged inside the limit groove, a through hole is provided on the adjusting disk, a positioning disk is fixedly connected to the outer wall of the fixed cylinder, the positioning disk is provided with positioning grooves arranged in an annular manner, and the positioning grooves and the through holes are adapted to each other.

5. An air sampler for construction engineering according to claim 4, characterized in that: The collection component includes a collection box, a collection pump and a sampling tube. The collection box is fixedly connected to the upper end of the regulating cylinder, the collection pump is fixedly installed on one side of the collection box, the collection cover is fixedly installed on the input end of the collection pump, the output end of the collection pump is arranged inside the collection box, and a solenoid valve is installed on the output end of the collection pump, the sampling tube is fixedly installed on one side of the collection box, a one-way valve is installed in the middle position of the sampling tube, and an air pressure sensor is fixedly installed inside the collection box.

6. An air sampler for construction engineering according to claim 5, characterized in that: The outer side wall of the insert cone may be provided with threads.

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