Air quality sampling instrument

Abstract

The utility model discloses an air quality sampling instrument, which relates to the technical field of air sampling instruments and comprises a groove column, a piston rod is sleeved on the inner wall of the groove column, the outer surface of a hole net is matched with the inner wall of an annular plate, so that the outer surface of a concave plate slides with the outer wall of the annular plate, and the outer surface of a connecting plate is matched with the outer wall of the concave plate. A clamping block is matched with the inner wall of a clamping groove, so that a connecting plate is connected with the outer surface of an annular plate through glue, the interior of a connecting column is protected, large impurities floating outside air are prevented from entering the interior of the connecting column to cause blockage, sampled air can be better stored in a groove column, and the use effect of the device is effectively improved; and a sliding block is driven to slide on the inner wall of a sliding groove through reset contraction force of a spring arranged on the outer wall of a connecting rod in a sleeving mode, the fastening performance of installation of the hole net on the inner wall of the annular plate is further improved, and therefore large sundries floating in external air can be better shielded on the outer side of a connecting column.

Description

Technical Field

[0001] The utility model relates to the technical field of air sampling instruments, and particularly relates to an air quality sampling instrument. Background Art

[0002] Air quality sampling is divided into the active sampling method of using a gas sampler or a gas pump to actively extract air samples, and the passive sampling method is to collect air samples by using a passive sampler or a passive sampling tube. An air quality sampling instrument is a device for sampling and collecting air quality.

[0003] Based on the above, the inventor found that: at present, there are many air quality sampling instruments on the market. However, when general staff actively samples the air in a designated area, the staff directly sleeved between the inner wall piston rod of the collection box to form a negative pressure inside the collection box to sample and collect the air. However, large sundries are extremely likely to float in the external air, thus causing the large sundries to block the inner wall of the air inlet of the collection box, thereby affecting the normal sampling of the air quality by the device and reducing the use effect of the device. Therefore, in view of this, the existing structure is studied and improved to provide an air quality sampling instrument in order to achieve a more practical value purpose. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] An air quality sampling instrument of the utility model includes a groove column, a piston rod is sleeved on the inner wall of the groove column, a connecting column is arranged on one side of the groove column, a protection mechanism is arranged on the outer surface of the connecting column, and a limiting mechanism is arranged on the outer surface of the protection mechanism;

[0006] The protection mechanism includes:

[0007] A ring plate, one side of the ring plate is fixed to the outer surface of the connecting column, a hole net is arranged in a matching manner on the inner wall of the ring plate, two concave plates are fixed on the outer surface of the hole net, the outer surfaces of the two concave plates are both slid on the outer wall of the ring plate, a connecting plate is adhesively connected to the outer surface of the ring plate, and the outer surface of the connecting plate is arranged in a matching manner with the outer wall of the concave plate.

[0008] As a preferred technical solution of the utility model, a closing mechanism is arranged on the outer surface of the groove column, and the closing mechanism includes:

[0009] A sealing plate, the outer surface of the sealing plate slides on the inner wall of the groove column, a sliding hole is opened at the top end of the inner wall of the groove column, the inner wall of the sliding hole slides with the outer wall of the sealing plate, a fixing plate is fixed to the top end of the sealing plate, and the bottom end of the fixing plate is adhesively connected to the outer surface of the groove column.

[0010] As a preferred technical solution of the present utility model, two concave blocks are fixed on the outer surface of the connecting column, and limiting plates are fixed on both sides of the groove column. The inner walls of the two limiting plates are arranged to match the outer walls of the concave blocks.

[0011] As a preferred technical solution of the present utility model, two clamping blocks are fixed on one side of the connecting plate, and two clamping grooves are formed on the outer surface of the ring plate. The inner walls of the two clamping grooves are arranged to match the outer walls of the clamping blocks.

[0012] As a preferred technical solution of the present utility model, the vertical cross-sectional area sizes of the outer walls of the two clamping blocks are arranged to match the vertical cross-sectional area sizes of the inner walls of the clamping grooves.

[0013] As a preferred technical solution of the present utility model, the limiting mechanism includes:

[0014] Two support plates, the outer surfaces of the two support plates are adhesively connected to the outer wall of the ring plate. Two sliding grooves are formed on the inner wall of the ring plate. Sliders are slidably arranged on the inner walls of the two sliding grooves. The outer surfaces of the two sliders are adhesively connected to the outer wall of the hole mesh. Connecting rods are fixed on the outer walls of the two sliders. One side of each of the two connecting rods is fixed to the outer surface of the support plate. The outer walls of the two connecting rods are sleeved with the inner walls of the sliding grooves.

[0015] As a preferred technical solution of the present utility model, springs are sleeved on the outer walls of the two connecting rods, and the two ends of each spring are fixed to the opposite surfaces of the sliding groove and the slider respectively.

[0016] The beneficial effects of the present utility model are:

[0017] 1. In this solution, by arranging the outer surface of the hole mesh to match the inner wall of the ring plate, the outer surface of the concave plate slides on the outer wall of the ring plate, arranging the outer surface of the connecting plate to match the outer wall of the concave plate, and matching the inner wall of the clamping groove with the clamping block, the outer surface of the connecting plate is adhesively connected to the outer surface of the ring plate, so as to protect the inside of the connecting column, block large sundries in the external air, prevent large sundries floating in the external air from entering the inside of the connecting column and causing blockage, which affects the normal sampling of the external air quality by the groove column. And by sliding the sealing plate on the inner wall of the sliding hole, the sampled air can be stored inside the groove column, which is convenient for better storing the sampled air inside the groove column and effectively improves the use effect of the device.

[0018] 2. In this solution, by releasing the control of the connecting rod, the spring reset contraction force sleeving on the outer wall of the connecting rod drives the slider to slide on the inner wall of the chute until the outer surface of the slider is adhesively connected to the outer surface of the hole mesh, facilitating further strengthening of the fastening of the hole mesh on the inner wall of the ring plate, thereby better blocking large sundries floating in the external air outside the connecting column, so that the device can normally sample and collect air, which is beneficial to the normal use of the device. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic structural diagram of an air quality sampling instrument of the present invention;

[0021] Figure 2 is a schematic structural diagram of an exploded view of a protection mechanism of an air quality sampling instrument of the present invention;

[0022] Figure 3 is a schematic structural diagram of an exploded view of a limiting mechanism of an air quality sampling instrument of the present invention;

[0023] Figure 4 is a schematic structural diagram of an exploded view of a closing mechanism of an air quality sampling instrument of the present invention.

[0024] In the figure: 1, groove column; 2, piston rod; 3, connecting column; 4, protection mechanism; 41, ring plate; 42, hole mesh; 43, concave plate; 44, connecting plate; 45, clamping block; 46, clamping groove; 5, limiting mechanism; 51, support plate; 52, chute; 53, slider; 54, connecting rod; 55, spring; 6, closing mechanism; 61, sealing plate; 62, sliding hole; 63, fixing plate; 7, concave block; 8, limiting plate. Detailed Embodiment

[0025] The following is a description of the preferred embodiments of the present invention with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0026] Embodiment: As Figures 1-4 shown, an air quality sampling instrument of the present invention includes a groove column 1, a piston rod 2 sleeved on the inner wall of the groove column 1, a connecting column 3 provided on one side of the groove column 1, a protection mechanism 4 provided on the outer surface of the connecting column 3, and a limiting mechanism 5 provided on the outer surface of the protection mechanism 4;

[0027] The protection mechanism 4 includes:

[0028] The annular plate 41 has one side fixed to the outer surface of the connecting column 3. A hole mesh 42 is arranged to match the inner wall of the annular plate 41. Two concave plates 43 are fixed to the outer surface of the hole mesh 42. The outer surfaces of the two concave plates 43 are both slidable on the outer wall of the annular plate 41. A connecting plate 44 is adhesively connected to the outer surface of the annular plate 41. The outer surface of the connecting plate 44 is arranged to match the outer wall of the concave plate 43. Two clamping blocks 45 are fixed to one side of the connecting plate 44. Two clamping grooves 46 are formed in the outer surface of the annular plate 41. The inner walls of the two clamping grooves 46 are both arranged to match the outer walls of the clamping blocks 45. The vertical cross-sectional area sizes of the outer walls of the two clamping blocks 45 are both arranged to match the vertical cross-sectional area sizes of the inner walls of the clamping grooves 46.

[0029] As shown in the appendix Figure 1 and Figure 4 shown, a closing mechanism 6 is provided on the outer surface of the groove column 1. The closing mechanism 6 includes:

[0030] A sealing plate 61, the outer surface of the sealing plate 61 is slidable on the inner wall of the groove column 1. A sliding hole 62 is formed at the top end of the inner wall of the groove column 1. The inner wall of the sliding hole 62 is slidable with the outer wall of the sealing plate 61. A fixing plate 63 is fixed to the top end of the sealing plate 61. The bottom end of the fixing plate 63 is adhesively connected to the outer surface of the groove column 1, which is convenient for isolating the air inside the groove column 1 from the outside after the device samples and collects the external air into the inside of the groove column 1, and is beneficial for the device to normally sample the air quality.

[0031] As shown in the appendix Figure 1 shown, two concave blocks 7 are fixed to the outer surface of the connecting column 3. Limit plates 8 are fixed to both sides of the groove column 1. The inner walls of the two limit plates 8 are both arranged to match the outer walls of the concave blocks 7, which is convenient for stably installing the connecting column 3 on the outer surface of the groove column 1.

[0032] As shown in the appendix Figure 1 , Figure 2 and Figure 3 shown, the limiting mechanism 5 includes:

[0033] Two support plates 51, the outer surfaces of the two support plates 51 are both adhesively connected to the outer wall of the annular plate 41. Two sliding grooves 52 are formed in the inner wall of the annular plate 41. Sliding blocks 53 are slidably arranged in the inner walls of the two sliding grooves 52. The outer surfaces of the two sliding blocks 53 are both adhesively connected to the outer wall of the hole mesh 42. Connecting rods 54 are fixed to the outer walls of the two sliding blocks 53. One side of each of the two connecting rods 54 is fixed to the outer surface of the support plate 51. The outer walls of the two connecting rods 54 are both sleeved in the inner walls of the sliding grooves 52. Springs 55 are sleeved on the outer walls of the two connecting rods 54. The two ends of the two springs 55 are respectively fixed to the opposite surfaces of the sliding grooves 52 and the sliding blocks 53, which is convenient for further strengthening the stability of the device for installing the hole mesh 42 on the inner wall of the annular plate 41.

[0034] Working principle: When in use, pull the fixed plate 63 away from the groove column 1, so that the outer wall of the sealing plate 61 slides on the inner wall of the sliding hole 62. Install the connecting column 3 on one side of the groove column 1, so that the outer wall of the concave block 7 is arranged to match the inner wall of the limiting plate 8. The outer surface of the pore network 42 is arranged to match the inner wall of the ring plate 41. Slide the outer surface of the concave plate 43 on the outer wall of the ring plate 41. Arrange the outer surface of the connecting plate 44 to match the outer wall of the concave plate 43. Through the matching arrangement of the clamping block 45 and the inner wall of the clamping groove 46, so that the connecting plate 44 is adhesively connected to the outer surface of the ring plate 41. Release the control of the connecting rod 54, so that the spring 55 sleeved on the outer wall of the connecting rod 54 drives the slider 53 to slide on the inner wall of the sliding groove 52 by the reset contraction force until the outer surface of the slider 53 is adhesively connected to the outer surface of the pore network 42, so that the pore network 42 is stably installed on the inner wall of the ring plate 41. Pull the piston rod 2 to slide on the inner wall of the groove column 1, so that the piston rod 2 samples the air in the specified external area into the inside of the groove column 1. Use the sealing plate 61 to slide on the inner wall of the sliding hole 62, so as to store the sampled and collected air inside the groove column 1.

[0035] Finally, it should be noted that: In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air quality sampling instrument, comprising a slot column (1), the inner wall of the slot column (1) is sleeved with a piston rod (2), and one side of the slot column (1) is provided with a connecting column (3), characterized in that: The outer surface of the connecting column (3) is provided with a protection mechanism (4), and the outer surface of the protection mechanism (4) is provided with a limiting mechanism (5); The protection mechanism (4) comprises: A ring plate (41), one side of the ring plate (41) is fixed to the outer surface of the connecting column (3), the inner wall of the ring plate (41) is matched with a hole net (42), the outer surface of the hole net (42) is fixed with two concave plates (43), the outer surfaces of the two concave plates (43) slide with the outer wall of the ring plate (41), the outer surface of the ring plate (41) is glue-connected with a connecting plate (44), and the outer surface of the connecting plate (44) is matched with the outer wall of the concave plate (43).

2. An air quality sampling instrument according to claim 1, characterized in that: The outer surface of the slot column (1) is provided with a closing mechanism (6), and the closing mechanism (6) comprises: A sealing plate (61), the outer surface of the sealing plate (61) slides with the inner wall of the slot column (1), a sliding hole (62) is provided at the top end of the inner wall of the slot column (1), the inner wall of the sliding hole (62) slides with the outer wall of the sealing plate (61), a fixing plate (63) is fixed at the top end of the sealing plate (61), and the bottom end of the fixing plate (63) is glue-connected to the outer surface of the slot column (1).

3. An air quality sampling instrument according to claim 1, characterized in that: Two recessed blocks (7) are fixed on the outer surface of the connecting column (3), and limiting plates (8) are fixed on both sides of the slot column (1), and the inner walls of the two limiting plates (8) are matched with the outer walls of the recessed blocks (7).

4. An air quality sampling instrument according to claim 1, characterized in that: Two clamping blocks (45) are fixed on one side of the connecting plate (44), and two clamping grooves (46) are provided on the outer surface of the ring plate (41), and the inner walls of the two clamping grooves (46) are matched with the outer walls of the clamping blocks (45).

5. An air quality sampling instrument according to claim 4, characterized in that: The vertical cross-sectional area dimensions of the outer walls of the two clamping blocks (45) are both matched with the vertical cross-sectional area dimensions of the inner wall of the clamping slot (46).

6. An air quality sampling instrument according to claim 1, characterized in that: The limiting mechanism (5) comprises: Two support plates (51), the outer surfaces of the two support plates (51) are both connected to the outer wall of the ring plate (41) by glue, the inner wall of the ring plate (41) is provided with two slide grooves (52), the inner walls of the two slide grooves (52) are both slid with sliders (53), the outer surfaces of the two sliders (53) are both connected to the outer wall of the mesh (42) by glue, the outer walls of the two sliders (53) are both fixed with connecting rods (54), one side of the two connecting rods (54) is fixed to the outer surface of the support plate (51), and the outer walls of the two connecting rods (54) are both sleeved with the inner wall of the slide groove (52).

7. An air quality sampling instrument according to claim 6, characterized in that: The outer walls of the two connecting rods (54) are sleeved with springs (55), and the two ends of the two springs (55) are respectively fixed to the opposite surfaces of the sliding groove (52) and the sliding block (53).

Images