Atmospheric particulate sampling device

Abstract

The utility model relates to the technical field of atmosphere detection, and discloses an atmospheric particulate sampling device which comprises a collecting head, a filtering assembly is movably installed in the collecting head, the left side and the right side of the collecting head are each provided with a light through hole, and a front adjusting assembly and a rear adjusting assembly are movably installed in the collecting head. The filtering assembly comprises a front filtering cover and a rear filtering cover which are movably connected into the collecting head in a sleeved mode, a plurality of connecting plates are fixedly connected between the two filtering covers, the outer surfaces of the connecting plates are attached to the interior of the collecting head in a sealed mode, and every two adjacent connecting plates are different in specification. And the specifications of the two connecting plates which are symmetrical about the axis of the filter cover are the same. According to the utility model, under the cooperation of the front and rear filter covers, the plurality of connecting plates can rotate at will in the collection head and between the left and right light through holes, so that the two corresponding connecting plates can be communicated with the left and right light through holes, thereby assisting the collector to complete the collection work of particulate matters with different particle sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of atmospheric detection, and more specifically, the utility model relates to an atmospheric particulate sampling device. Background Art

[0002] With the continuous development of industry, the living environment of human beings has been damaged. Among them, the air pollution situation is severe, and the suspended particulate matter in the air can cause haze weather. Meteorological experts and medical experts believe that the haze weather caused by fine particulate matter is even more harmful to human health than sandstorms.

[0003] The particulate collection work needs to be completed in cooperation with the corresponding filter membrane to ensure the collection of particulate matter that meets the expectations. However, in the case of difficult monitoring, the particulate matter to be collected is different. Therefore, it is necessary to replace the filter membrane. Most of the existing replacement methods are to remove the original one and replace it with a new one, which is not convenient to operate. Moreover, the sampler needs to be equipped with filter membranes of multiple specifications separately, which brings many inconveniences. Therefore, it needs to be improved. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an atmospheric particulate sampling device.

[0005] To achieve the above object, the utility model provides the following technical solution: an atmospheric particulate sampling device, including a collection head, a filter assembly is movably installed inside the collection head, a light passing hole is opened on each of the left and right sides of the collection head, and two adjusting assemblies are movably installed inside the collection head, one in the front and one in the back;

[0006] The filter assembly includes two front and rear filter covers movably sleeved inside the collection head. A plurality of connecting plates are fixedly connected between the two filter covers. The outer surface of the connecting plate is hermetically attached to the inside of the collection head. The specifications of adjacent two connecting plates are different, and the specifications of two connecting plates that are axially symmetric about the axis of the filter cover are the same.

[0007] As a preferred technical solution of the utility model, the extension lines of the axes of the two light passing holes coincide with each other, and the opposite surfaces of the two connecting plates with the same specifications are respectively communicated with the left and right light passing holes.

[0008] As a preferred technical solution of the utility model, the arc length dimension of the connecting plate is greater than the diameter dimension of the inner cavity of the light passing hole.

[0009] As a preferred technical solution of the utility model, the adjacent ends of the two adjusting assemblies are respectively fixedly connected to the opposite ends of the two filter covers, and the opposite ends of the two adjusting assemblies both extend to the outside of the collection head.

[0010] As a preferred technical solution of the present utility model, the adjusting assembly includes positioning assemblies installed at the front and rear ends of the filtering assembly. A positioning shaft is fixedly sleeved in the middle of the positioning assembly. One end of the positioning shaft is fixedly connected to the filtering cover, and the other end of the positioning shaft is fixedly connected to a rotating shaft.

[0011] As a preferred technical solution of the present utility model, one end of the rotating shaft is connected to the positioning shaft, and the other end of the rotating shaft extends to the outside of the collecting head and is provided with a rotating groove. The outer diameter dimension of the outer circumference of the rotating shaft is smaller than the outer diameter dimension of the outer circumference of the positioning shaft.

[0012] As a preferred technical solution of the present utility model, the positioning assembly includes a positioning cavity opened inside the collecting head and outside the positioning shaft. The positioning cavity and the positioning shaft are coaxial. A plurality of positioning spring pieces and limiting spring pieces are evenly distributed between the positioning cavity and the positioning shaft. The positioning spring pieces and the limiting spring pieces correspond to each other one by one and are alternately distributed;

[0013] The opposite surfaces of the positioning spring pieces and the limiting spring pieces are respectively fixedly connected to the positioning cavity and the positioning shaft, and the opposite surfaces of the positioning spring pieces and the limiting spring pieces are mutually attached.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Due to the setting of the filtering assembly of the present utility model, with the cooperation of the front and rear two filtering covers, a plurality of connecting plates can rotate freely inside the collecting head and between the left and right two light passing holes, so that the corresponding two connecting plates can be communicated with the left and right two light passing holes, thereby achieving the effect of assisting the collector to complete the collection work of particulate matters with different particle sizes.

[0016] 2. Due to the setting of the positioning assembly of the present utility model, with the cooperation of the positioning spring pieces and the limiting spring pieces, the deformation effects of the two can ensure that the positioning shaft can drive a plurality of connecting plates to rotate synchronously through the cooperation of the front and rear two filtering covers under the drive of the rotating shaft, and the deformation and reset of the positioning spring pieces and the limiting spring pieces can provide resistance to the rotation of the positioning shaft, thereby avoiding the situation that the positioning shaft and the whole filtering assembly rotate accidentally; thus achieving the effect of assisting the collector to stably collect particulate matters. Description of the Drawings

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

[0018] Figure 2 is a front sectional view of the present utility model;

[0019] Figure 3 is a side sectional view of the present utility model;

[0020] Figure 4It is a front sectional view of the positioning cavity of the present utility model;

[0021] Figure 5 It is a structural schematic diagram of the filter assembly of the present utility model;

[0022] Figure 6 is Figure 5 a front sectional view of the filter assembly in

[0023] In the figure: 1. Collection head; 2. Filter assembly; 21. Filter cover; 22. Connecting plate; 3. Light passing hole; 4. Adjusting assembly; 41. Positioning assembly; 411. Positioning cavity; 412. Positioning spring piece; 413. Limiting spring piece; 42. Positioning shaft; 43. Pivot shaft. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1 to 6 shown, the present utility model provides an atmospheric particulate matter sampling device, which includes a collection head 1. A filter assembly 2 is movably installed inside the collection head 1. A light passing hole 3 is opened on each of the left and right sides of the collection head 1. Two adjusting assemblies 4 are movably installed inside the collection head 1;

[0026] The filter assembly 2 includes two front and rear filter covers 21 movably sleeved inside the collection head 1. A plurality of connecting plates 22 are fixedly connected between the two filter covers 21. The outer surface of the connecting plate 22 is hermetically attached to the inside of the collection head 1. The specifications of adjacent two connecting plates 22 are different, and the specifications of two connecting plates 22 that are axially symmetric about the axis of the filter cover 21 are the same; Due to the setting of the filter assembly 2, with the cooperation of the front and rear filter covers 21, a plurality of connecting plates 22 can be rotated freely inside the collection head 1 and between the left and right light passing holes 3, so that the corresponding two connecting plates 22 can be communicated with the left and right light passing holes 3, thereby assisting the sampler to complete the collection work of particulate matter with different particle sizes.

[0027] Among them, the extension lines of the axes of the two light passing holes 3 coincide with each other. The opposite surfaces of the two connecting plates 22 with the same specifications are respectively communicated with the left and right light passing holes 3.

[0028] Among them, the arc length dimension of the connecting plate 22 is greater than the diameter dimension of the inner cavity of the light passing hole 3.

[0029] Among them, the adjacent ends of the two adjusting components 4 are respectively fixedly connected to the opposite ends of the two filter covers 21, and the opposite ends of the two adjusting components 4 both extend to the outside of the collecting head 1; due to the arrangement of the front and rear filter covers 21, a plurality of connecting plates 22 can be integrally encapsulated inside the collecting head 1 and between the left and right light passing holes 3, and it is convenient for any one of the front and rear adjusting components 4 to control the movement of the plurality of connecting plates 22 through the cooperation of the filter cover 21.

[0030] Among them, the adjusting component 4 includes a positioning component 41 installed at the front and rear ends of the filtering component 2. A positioning shaft 42 is fixedly sleeved in the middle of the positioning component 41. One end of the positioning shaft 42 is fixedly connected to the filter cover 21, and the other end of the positioning shaft 42 is fixedly connected to a rotating shaft 43.

[0031] Among them, one end of the rotating shaft 43 is connected to the positioning shaft 42, and the other end of the rotating shaft 43 extends to the outside of the collecting head 1 and is provided with a slot. The outer diameter dimension of the outer circumference of the rotating shaft 43 is smaller than the outer diameter dimension of the outer circumference of the positioning shaft 42; due to the arrangement of the positioning shaft 42, the positioning component 41 can be well restricted in cooperation with the rotating shaft 43, avoiding the situation of misalignment of the positioning spring piece 412 and the limiting spring piece 413 caused by the axial movement of the positioning shaft 42 and the rotating shaft 43.

[0032] Among them, the positioning component 41 includes a positioning cavity 411 opened inside the collecting head 1 and outside the positioning shaft 42. The positioning cavity 411 and the positioning shaft 42 are coaxial. A plurality of positioning spring pieces 412 and limiting spring pieces 413 are evenly distributed between the positioning cavity 411 and the positioning shaft 42. The positioning spring pieces 412 and the limiting spring pieces 413 correspond one by one and are alternately distributed;

[0033] The opposite backs of the positioning spring pieces 412 and the limiting spring pieces 413 are respectively fixedly connected to the positioning cavity 411 and the positioning shaft 42, and the opposite faces of the positioning spring pieces 412 and the limiting spring pieces 413 are mutually attached; due to the arrangement of the positioning component 41, with the cooperation of the positioning spring pieces 412 and the limiting spring pieces 413, the deformation effect of the two can ensure that the positioning shaft 42 can drive a plurality of connecting plates 22 to rotate synchronously through the cooperation of the front and rear filter covers 21 driven by the rotating shaft 43, and the deformation reset of the positioning spring pieces 412 and the limiting spring pieces 413 can provide resistance to the rotation of the positioning shaft 42, thereby avoiding the situation of accidental rotation of the positioning shaft 42 and the entire filtering component 2; thus achieving the effect of assisting the collector to stably collect particulate matter.

[0034] The working principle and usage process of the present utility model:

[0035] Connect the collecting head 1 with the collector through pipelines and other devices, and ensure that one end of the pipeline is connected to one of the light passing holes 3 on the side of the collecting head 1, and the other end of the pipeline is connected to the feeding end of the collector;

[0036] Before and after rotation, any one of the dial shafts 43 can drive the filter assembly 2 to rotate through the positioning shaft 42. Since the rotation of the filter assembly 2 can synchronously rotate a plurality of connecting plates 22, the corresponding filter assemblies 2 can communicate with the left and right light-transmitting holes 3, so that the left and right light-transmitting holes 3 can cooperate with the corresponding two connecting plates 22 to enable the collector to collect particulate matters of different particle sizes;

[0037] The rotation of the positioning shaft 42 can drive a plurality of limiting spring pieces 413 on its surface to move. Since the movement of the limiting spring pieces 413 can cause the two to deform in cooperation with the positioning spring piece 412, it is ensured that the positioning shaft 42 can drive the filter assembly 2 to rotate smoothly. The restoration of the positioning spring piece 412 and the limiting spring piece 413 after deformation can generate resistance to the rotation of the positioning shaft 42, so as to avoid the situation of accidental rotation of the positioning shaft 42 and the filter assembly 2 as a whole, so that the corresponding two filter assemblies 2 can cooperate with the left and right light-transmitting holes 3 to enable the collector to stably collect particulate matters.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atmospheric particulate matter sampling device, comprising a sampling head (1), characterized in that: A filter assembly (2) is movably installed inside the collection head (1), a light-through hole (3) is provided on both the left and right sides of the collection head (1), and two front and rear adjustment assemblies (4) are movably installed inside the collection head (1); The filter assembly (2) comprises two front and rear filter covers (21) movably sleeved inside the collection head (1); a plurality of connecting plates (22) are fixedly connected between the two filter covers (21); the outer surfaces of the connecting plates (22) are sealed and fitted inside the collection head (1); the specifications of two adjacent connecting plates (22) are different, and the specifications of two connecting plates (22) symmetrical about the axis of the filter cover (21) are the same.

2. An atmospheric particulate sampling device according to claim 1, characterized in that: The extended lines of the axes of the two light-through holes (3) overlap each other, and the opposite back surfaces of the two connecting plates (22) of the same specification are respectively connected to the left and right light-through holes (3).

3. The atmospheric particulate matter sampling device according to claim 1, characterized in that: The arc length of the connecting plate (22) is greater than the diameter of the inner cavity of the light-through hole (3).

4. The atmospheric particulate matter sampling device according to claim 1, characterized in that: The proximal ends of the two adjustment components (4) are respectively fixedly connected to the distal ends of the two filter covers (21), and the distal ends of the two adjustment components (4) both extend to the outside of the collection head (1).

5. The atmospheric particulate matter sampling device according to claim 1, characterized in that: The adjustment component (4) comprises a positioning component (41) installed at the front and rear ends of the filter component (2); a positioning shaft (42) is fixedly sleeved in the middle of the positioning component (41); one end of the positioning shaft (42) is fixedly connected to the filter cover (21); and the other end of the positioning shaft (42) is fixedly connected to a rotating shaft (43).

6. The atmospheric particulate matter sampling device according to claim 5, characterized in that: One end of the dial shaft (43) is connected to the positioning shaft (42), the other end of the dial shaft (43) extends to the outside of the collection head (1) and is provided with a dial groove, and the outer diameter of the dial shaft (43) is smaller than the outer diameter of the positioning shaft (42).

7. The atmospheric particulate matter sampling device according to claim 5, characterized in that: The positioning assembly (41) comprises a positioning cavity (411) opened inside the collection head (1) and outside the positioning shaft (42); the positioning cavity (411) and the positioning shaft (42) are coaxial; a plurality of evenly distributed positioning springs (412) and limiting springs (413) are arranged between the positioning cavity (411) and the positioning shaft (42); the positioning springs (412) and limiting springs (413) correspond to each other one by one and are alternately distributed; The facing surfaces of the positioning spring (412) and the limiting spring (413) are respectively fixedly connected to the positioning cavity (411) and the positioning shaft (42), and the facing surfaces of the positioning spring (412) and the limiting spring (413) are in contact with each other.

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