Portable dust sampling device

Abstract

The utility model belongs to the technical field of dust sampling, and particularly relates to a portable dust sampling device which comprises a sampler body, a control panel arranged on the surface of the sampler body, a sampling head mounted at the top of the sampler body, a fixing frame connected to the surface of the front end of the sampler body, a spring connected to the surface of a rectangular groove in the transverse end of the fixing frame, and a limiting rod sleeved on the inner wall of the spring. One side surface of the limiting rod is connected to the inner wall of the transverse end of the fixing frame, the surface of the limiting rod is slidably connected with a connecting block, one side surface of the connecting block is connected with a spring, and the surface of the connecting block is connected with a protection plate. According to the utility model, through the mutual cooperation of the fixing frame, the spring, the limiting rod, the connecting block, the protection plate, the clamping groove, the insertion rod and the limiting plate, the protection plate capable of rapidly and elastically moving is used for shielding the control panel, so that the keys of the control panel are prevented from being touched by mistake when the control panel does not need to be operated and input; therefore, the fluency and accuracy of the sampling work of the sampler body are guaranteed, and the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of dust sampling technology, specifically relating to a portable dust sampling device. Background Technology

[0002] The purpose of portable dust sampling devices is to collect dust samples in dusty air, determine the concentration of airborne dust in the ambient air by methods such as weighing through filter membranes, and separate and collect particulate matter of different sizes as needed, such as total suspended particulate matter (TSP), inhalable particulate matter (PM10), fine particulate matter (PM2.5), etc., to provide samples for subsequent analysis of dust concentration, composition, etc.

[0003] In terms of safety production management, it can monitor dust concentration in the workplace, prevent occupational diseases such as pneumoconiosis caused by excessive dust, and protect the occupational health of workers; in the field of environmental protection, it helps to understand the status of dust pollution in the atmosphere and provides a scientific basis for formulating targeted dust prevention, dust reduction, and dust removal measures; at the scientific research level, it provides basic data for studying dust characteristics and diffusion patterns; and in the formulation of relevant standards and supervision and enforcement, it provides quantitative basis for judging whether the environment or workplace meets the dust concentration standards.

[0004] Existing portable dust sampling devices require a control panel to operate on the data and to start or stop sampling. However, the control panel is directly exposed to the environment, making it easy for users to accidentally touch it, leading to data tampering or inappropriate sampling start times. This can affect the smoothness and accuracy of sampling. Furthermore, the sampling head is exposed and easily damaged by bumps during short-distance transport, thus affecting its service life. Utility Model Content

[0005] The purpose of this invention is to provide a portable dust sampling device, which aims to solve the problems of existing portable dust sampling devices that require control of usage data and whether to start or stop sampling via a control panel. However, the control panel is directly exposed to the environment, making it easy for users to accidentally touch it, resulting in the data settings being tampered with or sampling starting at an inappropriate time, thus affecting the smoothness and accuracy of sampling. In addition, the sampling head is exposed and is easily damaged by bumps during short-distance transportation, thus affecting its service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable dust sampling device, comprising a sampler body, a control panel on the surface of the sampler body, a sampling head mounted on the top of the sampler body, a fixing frame connected to the front surface of the sampler body, a spring connected to the surface of a rectangular groove at the transverse end of the fixing frame, a limiting rod sleeved on the inner wall of the spring, one side surface of the limiting rod connected to the inner wall of the transverse end of the fixing frame, a connecting block slidably connected to the surface of the limiting rod, a spring connected to one side surface of the connecting block, a protective plate connected to the surface of the connecting block, the longitudinal end surface of the protective plate abutting against the opening end of the fixing frame, a slot formed on the surface of the protective plate, a connecting rod engaged with the slot surface, the transverse end of the connecting rod inserted into the surface of the limiting plate, the surface of the limiting plate connected to the surface of the fixing frame near the opening end, a sliding groove formed on the top of the sampler body, a slider slidably connected to the surface of the sliding groove, a protective cover connected to the top surface of the slider, and a bolt threadedly connected to the surface of the side plate at the opening end of the protective cover.

[0007] As a preferred embodiment of the portable dust sampling device of this utility model, the fixing frame, spring, limiting rod and connecting block form an elastic connection structure.

[0008] As a preferred embodiment of the portable dust sampling device of this utility model, the connecting block is a rectangular block with a circular through groove on its surface, and the shape and size of the through groove are adapted to the limiting rod.

[0009] As a preferred embodiment of the portable dust sampling device of this utility model, the protective plate has two sets of slots on its surface, and the shape and size of the slots are adapted to the lateral end of the insertion rod.

[0010] As a preferred embodiment of the portable dust sampling device of this utility model, the protective plate, the slot, the insertion rod and the limiting plate form a snap-fit ​​structure, and the insertion rod is a U-shaped integrated structure with two sets of rubber protrusions on its lateral end surface.

[0011] As a preferred embodiment of the portable dust sampling device of this utility model, a sliding groove is respectively opened on the top of the sampler body on both sides of the sampling head. The sliding groove is a "T" shaped groove, and its shape and size are adapted to the slider.

[0012] As a preferred embodiment of the portable dust sampling device of this utility model, the two sets of protective covers are respectively abutted against both sides of the sampling head, and the protective covers and bolts form a threaded connection structure.

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

[0014] By cooperating with the fixed frame, spring, limit rod, connecting block, protective plate, slot, insertion rod and limit plate, the control panel is shielded by the protective plate that can move quickly and elastically. This prevents accidental touches on the control panel buttons when no operation input is required, thereby ensuring the smoothness and accuracy of the sampler body in the sampling work and improving sampling efficiency.

[0015] By utilizing the cooperation between the sampler body, slide, slider, protective cover and bolts, two movable protective covers protect the surface of the sampling head, thereby avoiding damage caused by collisions between external objects and the sampling head during short-distance movement. At the same time, when sampling is needed, the protective covers can be moved to prevent them from obstructing the sampling head and affecting sampling. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0020] Figure 4 This is a side view of the exploded structure of this utility model.

[0021] In the diagram: 1. Sampler body; 2. Control panel; 3. Sampling head; 4. Fixing frame; 5. Spring; 6. Limiting rod; 7. Connecting block; 8. Protective plate; 9. Slot; 10. Insert rod; 11. Limiting plate; 12. Slide groove; 13. Slider; 14. Protective cover; 15. Bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0023] Please see Figures 1-4This utility model provides the following technical solution: a portable dust sampling device, including a sampler body 1, a control panel 2 on the surface of the sampler body 1, a sampling head 3 mounted on the top of the sampler body 1, a fixing frame 4 connected to the front surface of the sampler body 1, a spring 5 connected to the rectangular groove surface of the horizontal end of the fixing frame 4, a limiting rod 6 sleeved on the inner wall of the spring 5, one side surface of the limiting rod 6 connected to the inner wall of the horizontal end of the fixing frame 4, a connecting block 7 slidably connected to the surface of the limiting rod 6, a spring 5 connected to one side surface of the connecting block 7, a protective plate 8 connected to the surface of the connecting block 7, the longitudinal end surface of the protective plate 8 abutting against the open end of the fixing frame 4, a slot 9 opened on the surface of the protective plate 8, and a connecting insert engaged on the surface of the slot 9. Rod 10, the horizontal end of which is inserted into the surface of limiting plate 11, the surface of limiting plate 11 is connected to the surface of the near-open end of fixing frame 4, a sliding groove 12 is opened on the top of sampler body 1, a slider 13 is slidably connected to the surface of sliding groove 12, a protective cover 14 is connected to the top surface of slider 13, and a bolt 15 is threadedly connected to the side plate surface of the open end of protective cover 14. In this design scheme, sampler body 1, control panel 2 and sampling head 3 constitute the main body of portable dust sampler, and a large number of related components are set in the main body of portable dust sampler. Since they are existing technologies and the core content of this technical solution is not related to them, they will not be described in detail in this technical solution.

[0024] The main model of the portable dust sampler in this solution is: KY-2031 Portable Dust Atmospheric Sampler.

[0025] In use: The KY-2031 portable dust atmospheric sampler operates using both membrane weighing and solution absorption methods. During sampling, the sampling head 3 separates particulate matter according to size based on aerodynamic principles, allowing qualified particles such as total suspended particulates (TSP) and inhalable particulates (PM10, PM2.5) to enter. An electronic flow meter precisely controls the flow rate, and a sampling pump draws in air, causing the dust-laden air to pass through the filter membrane, where dust is trapped. The dust mass is then determined by weighing the filter membrane, and the dust concentration is calculated based on the sampling volume. For harmful gases, the solution absorption method is used, allowing the gas to react with the absorbent liquid and be collected for subsequent analysis and detection.

[0026] Preferably, the fixing frame 4, spring 5, limiting rod 6 and connecting block 7 form an elastic connection structure.

[0027] In practical use, pull out the plug 10 that is inserted between the protective plate 8 and the limiting plate 11, so that the spring 5 will cause the connected protective plate 8 to move away from the opening end of the fixed frame 4 within the fixed frame 4 until the protective plate 8 completely covers the control panel 2.

[0028] Preferably, the connecting block 7 is a rectangular block with a circular through groove on its surface, and the shape and size of the through groove are adapted to the limiting rod 6.

[0029] In practical use, the circular through groove on the surface of the connecting block 7 allows the connecting block 7 to slide on the surface of the limiting rod 6, and can be limited by the disc on one side of the limiting rod 6, so as to prevent the user from pulling too much and causing the protective plate 8 to detach from the fixed frame 4 of the sliding connection.

[0030] Preferably, two sets of slots 9 are provided on the surface of the protective plate 8, and the shape and size of the slots 9 are adapted to the horizontal end of the insertion rod 10.

[0031] In practical use, pull out the insert rod 10 that engages between the protective plate 8 and the limiting plate 11, then pull the protective plate 8 at the side near the opening end of the fixing frame 4 and pull the protective plate 8 outward away from the fixing frame 4. This causes the connecting block 7 connected to the surface of the protective plate 8 to slide on the limiting rod 6, eventually revealing the control panel 2 that was covered by the protective plate 8. Then, insert the insert rod 10 into the limiting plate 11 again, and finally make its lateral end engage with the slot 9 near the end of the spring 5, thereby fixing the position of the protective plate 8 on the fixing frame 4.

[0032] Preferably, the protective plate 8, the slot 9, the insertion rod 10 and the limiting plate 11 form a snap-fit ​​connection structure. The insertion rod 10 is a U-shaped integrated structure with two sets of rubber protrusions on its transverse end surface.

[0033] In practical use, the insertion rod 10 is inserted into the through groove on the surface of the limiting plate 11 and uses the rubber protrusion at its front end to engage with the slot 9 on the surface of the protective plate 8 near the spring 5, thereby fixing the position of the protective plate 8 on the fixing frame 4.

[0034] Preferably, a groove 12 is opened on the top of the sampler body 1 on both sides of the sampling head 3. The groove 12 is a "T" shaped groove, and its shape and size are adapted to the slider 13.

[0035] In actual use, the protective cover 14, which is slidably connected to the top of the sampler body 1, is pulled to the sides away from the sampling head 3, thereby exposing the protected sampling head 3 inside.

[0036] Preferably, two sets of protective covers 14 are respectively abutted against both sides of the sampling head 3, and the protective covers 14 and bolts 15 form a threaded connection structure.

[0037] In practical use, two protective covers 14 that abut together are fixed with bolts 15 to protect the sampling head 3. When in use, the bolts 15 fixed between the protective covers 14 are unscrewed, and then the protective covers 14 that are slidably connected to the top of the sampler body 1 are pulled away from the sampling head 3 to the sides, thereby exposing the protected sampling head 3 inside, so as to avoid obstructing the sampling head 3 and affecting its sampling.

[0038] Working principle: When sampling dust in the environment using the sampler body 1, first unscrew the bolts 15 fixed between the protective covers 14, then pull the protective covers 14 slidably connected to the top of the sampler body 1 away from the sampling head 3, thus exposing the protected sampling head 3 inside. Then pull out the plug rod 10 that is engaged between the protective plate 8 and the limiting plate 11. Then pull the protective plate 8 at the side near the opening end of the fixing frame 4 and pull the protective plate 8 away from the fixing frame 4, so that the connecting block 7 connected to the surface of the protective plate 8 slides on the limiting rod 6, finally exposing the control panel 2 that was covered by the protective plate 8. Then, use the plug rod 10 again to insert... Insert the limiting plate 11, and finally make its lateral end engage with the slot 9 near the end of the spring 5, thereby fixing the position of the protective plate 8 on the fixing frame 4, so that the user can operate the control panel 2 according to the sampling needs. After the operation is completed, repeat the above operation, pull out the plug 10 that engages between the protective plate 8 and the limiting plate 11, and use the spring 5 to drive the connected protective plate 8 to move away from the opening end of the fixing frame 4 in the fixing frame 4 until the protective plate 8 completely covers the control panel 2, so as to prevent the user from accidentally touching the buttons on the surface of the control panel 2 during the test, which would affect the sampling work of the sampler body 1 and thus ensure the smooth operation of the sampling work of the sampler body 1.

[0039] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable dust sampling device comprising a sampler body (1) characterised in that: The sampler body (1) has a control panel (2) on its surface. A sampling head (3) is installed on the top of the sampler body (1). A fixing frame (4) is connected to the front surface of the sampler body (1). A spring (5) is connected to the rectangular groove surface of the horizontal end of the fixing frame (4). A limiting rod (6) is sleeved on the inner wall of the spring (5). One side of the limiting rod (6) is connected to the inner wall of the horizontal end of the fixing frame (4). A connecting block (7) is slidably connected to the surface of the limiting rod (6). A spring (5) is connected to one side of the connecting block (7). A protective plate (8) is connected to the surface of the connecting block (7). (8) The longitudinal end surface abuts against the opening end of the fixed frame (4). The surface of the protective plate (8) has a slot (9). The surface of the slot (9) engages with the plug rod (10). The transverse end of the plug rod (10) is inserted into the surface of the limiting plate (11). The surface of the limiting plate (11) is connected to the surface of the fixed frame (4) near the opening end. The top of the sampler body (1) has a sliding groove (12). The surface of the sliding groove (12) is slidably connected to the slider (13). The top surface of the slider (13) is connected to the protective cover (14). The surface of the side plate at the opening end of the protective cover (14) is threaded with bolts (15).

2. The portable dust sampling device of claim 1, wherein: The fixing frame (4), spring (5), limiting rod (6) and connecting block (7) form an elastic connection structure.

3. The portable dust sampling device of claim 2, wherein: The connecting block (7) is a rectangular block with a circular through groove on its surface, and the shape and size of the through groove are adapted to the limiting rod (6).

4. The portable dust sampling device of claim 1, wherein: The protective plate (8) has two sets of slots (9) on its surface, and the shape and size of the slots (9) are adapted to the lateral end of the insert (10).

5. The portable dust sampling device of claim 4, wherein: The protective plate (8), the slot (9), the insert rod (10) and the limiting plate (11) form a snap-fit ​​structure. The insert rod (10) is a U-shaped integrated structure with two sets of rubber protrusions on its lateral end surface.

6. The portable dust sampling device of claim 5, wherein: The top of the sampler body (1) has a groove (12) on each side of the sampling head (3). The groove (12) is a "T" shaped groove, and its shape and size are adapted to the slider (13).

7. The portable dust sampling device of claim 6, wherein: The two sets of protective covers (14) are respectively abutted against the two sides of the sampling head (3), and the protective covers (14) and bolts (15) form a threaded connection structure.

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