A rectifying container

Abstract

The present invention discloses a rectifying container, which includes a main body disposed in an aerosol mixing tube. An accommodation cavity is provided in the main body, and a plurality of rectifying holes penetrating through the side wall of the accommodation cavity are further provided on the main body. A plurality of the rectifying holes are all located below the top plate of the aerosol mixing tube. The accommodation cavity is communicated with an aerosol inlet pipe, and the accommodation cavity is communicated with the aerosol mixing tube through the rectifying holes. The opening direction of the rectifying holes is upward, and the included angle between the rectifying holes and the vertical direction is between 30° and 65°, so that the aerosol flowing out of the rectifying holes can collide with the tube wall or the top plate. The solution adopted by the present invention greatly improves the uniformity of aerosol mixing.

Description

Technical Field

[0001] The present invention relates to the technical field of precision instruments, and specifically, to a rectifying container. Background Art

[0002] A dust particle counter is an instrument used to measure the number and particle size distribution of dust particles per unit volume in a clean environment. It can be widely applied to production enterprises and scientific research departments such as the electronics industry, pharmaceutical workshops, semiconductors, optical or precision machining, plastics, painting, hospitals, environmental protection, inspection institutes, etc., as well as authoritative institutions such as drug inspection institutes, blood centers, epidemic prevention stations, disease control centers, and quality supervision institutes in various provinces and cities.

[0003] To ensure the accuracy and reliability of the dust particle counter, it is usually necessary to calibrate the dust particle counter regularly. Generally, an aerosol generation system for calibrating the dust particle counter to be tested includes a mixing device for mixing the aerosol and a sampling head disposed at the bottom of the mixing device for sampling the aerosol. Whether the mixing device can mix the aerosol evenly will directly affect the measurement result of the dust particle counter, and further affect the evaluation of the measurement accuracy of the dust particle counter to be tested by the detection party. Summary of the Invention

[0004] To overcome the defects in the prior art, an embodiment of the present invention provides a rectifying container, which is used to solve at least one of the above problems.

[0005] An embodiment of the present application discloses: a rectifying container for rectifying an aerosol, which is disposed in an aerosol mixing tube and communicated with an aerosol inlet pipe. The aerosol mixing tube includes a tube wall and a top plate disposed on the top of the tube wall. The rectifying container includes a main body disposed in the aerosol mixing tube. An accommodation cavity is provided in the main body. A plurality of rectifying holes penetrating through the side wall of the accommodation cavity are further provided on the main body. A plurality of the rectifying holes are all located below the top plate of the aerosol mixing tube. The accommodation cavity is communicated with the aerosol inlet pipe. The accommodation cavity is communicated with the aerosol mixing tube through the rectifying holes. The opening direction of the rectifying holes is upward, and the included angle between the rectifying holes and the vertical direction is between 30° and 65°, so that the aerosol flowing out of the rectifying holes can collide with the tube wall or the top plate.

[0006] Specifically, the main body includes a connecting portion connected to the aerosol mixing tube and a rectifying portion for rectifying the aerosol. The accommodation cavity penetrates through the connecting portion and extends into the rectifying portion. The connecting portion is communicated with the aerosol inlet pipe. The rectifying holes are provided on the side wall of the rectifying portion.

[0007] Specifically, the rectifying part includes a first end and a second end. One end of the first end is connected to the connecting part, and the other end of the first end is connected to the second end. The rectifying holes are arranged on the side wall of the first end, and the cross-sectional area of the first end increases from the connecting part to the second end.

[0008] Specifically, the cross-sectional area of the second end decreases from the connecting part to the second end.

[0009] Specifically, multiple rows of rectifying holes are arranged at intervals on the side wall of the first end, and multiple rectifying holes in each row are evenly distributed along the circumferential direction of the first end.

[0010] Specifically, the number of rectifying holes included in each row of rectifying holes is greater than or equal to 3.

[0011] Specifically, the angles between the multiple rectifying holes in the same row of rectifying holes and the vertical direction are the same.

[0012] Specifically, in different rows of rectifying holes, the angles between the rectifying holes in each row and the vertical direction are different.

[0013] Specifically, in different rows of rectifying holes, the angles between the rectifying holes in each row and the vertical direction increase from the connecting part to the second end.

[0014] The beneficial effects of this embodiment are as follows:

[0015] 1. For the rectifying container in this embodiment, a receiving cavity is provided on the main body and is arranged in the aerosol mixing tube along with the main body, and rectifying holes penetrate through the side wall of the receiving cavity. The opening direction of the rectifying holes is upward, and the angle α between the rectifying holes and the vertical direction is between 30° and 60°. This enables the aerosol entering from the aerosol inlet pipe to be mixed once in the receiving cavity first. Then, the aerosol flowing out from the rectifying holes can collide with the tube wall or the top plate of the aerosol mixing tube for re-mixing, thus greatly improving the uniformity of aerosol mixing.

[0016] 2. The first end of the rectifying part is arranged in a way that its cross-sectional area gradually increases from top to bottom, which can make the rectifying holes distributed on its side wall as close as possible to the tube wall or the top plate of the aerosol mixing tube, so as to shorten the travel distance of the aerosol to the tube wall or the top plate, avoid affecting the impact force on the aerosol, and further affect the mixing effect of the aerosol.

[0017] 3. The second end of the rectifying part is arranged in a way that its cross-sectional area gradually decreases from top to bottom, which can guide the flow of the aerosol, enabling the aerosol to flow downward smoothly, and avoid the formation of vortices at the bottom of the second end, affecting its fall in the aerosol mixing tube.

[0018] In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following preferred embodiments are specifically given and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a working schematic diagram of the rectifying container described in the embodiment of the present invention;

[0021] Figure 2 is a structural schematic diagram of the rectifying container described in the embodiment of the present invention;

[0022] Figure 3 is a structural schematic diagram of the rectifying container described in another embodiment of the present invention.

[0023] The reference numerals of the above drawings: 1 - main body, 11 - accommodating cavity, 12 - rectifying hole, 110 - connecting portion, 120 - rectifying portion, 121 - first end, 122 - second end, 2 - aerosol mixing tube, 21 - tube wall, 22 - top plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Combined with Figures 1 to 2As shown, the rectifying container in this embodiment is used to rectify the aerosol. At least part of the rectifying container is disposed in the aerosol mixing tube 2, and the rectifying container is communicated with an aerosol inlet pipe (not shown in the figure). The aerosol mixing tube 2 includes a tube wall 21 and a top plate 22 disposed at the top of the tube wall 21. The rectifying container includes a main body 1 disposed in the aerosol mixing tube 2. An accommodation cavity 11 is provided in the main body 1. A plurality of rectifying holes 12 penetrating through the side wall of the accommodation cavity 11 are further provided on the main body 1, and a plurality of the rectifying holes 12 are all located below the top plate 22 of the aerosol mixing tube 2. The accommodation cavity 11 is communicated with the aerosol inlet pipe, and the accommodation cavity 11 is communicated with the aerosol mixing tube 2 through the rectifying holes 12. The opening direction of the rectifying holes 12 is upward, and the included angle α between the rectifying holes 12 and the vertical direction is between 30° and 60°. For example, the included angle α is 30°, 35°, 40°, 45°, 50°, 55°, 60°, so that the aerosol flowing out of the rectifying holes 12 can collide with the tube wall 21 or the top plate 22 of the aerosol mixing tube 2.

[0026] Specifically, at least part of the accommodation cavity 11 is disposed in the aerosol mixing tube 2 along with the main body 1. Therefore, the inner diameter of the accommodation cavity 11 located in the aerosol mixing tube 2 is smaller than the inner diameter of the tube wall 21. That is to say, the aerosol entering from the aerosol inlet pipe first undergoes a first mixing in the accommodation cavity 11 with a smaller space, and then is ejected upward through the rectifying holes 12, so that the aerosol collides with the tube wall 21 or the top plate 22 of the aerosol mixing tube 2, and the collided aerosol moves violently in the vertical or horizontal direction to achieve a second mixing, thereby achieving the purpose of uniform mixing.

[0027] With the above structure, for the rectifying container in this embodiment, the main body 1 is provided with an accommodation cavity 11 disposed in the aerosol mixing tube 2 along with the main body 1 and rectifying holes 12 penetrating through the side wall of the accommodation cavity 11. The opening direction of the rectifying holes 12 is upward, and the included angle α between the rectifying holes 12 and the vertical direction is between 30° and 60°. The aerosol entering from the aerosol inlet pipe first undergoes a mixing in the accommodation cavity 11, and then the aerosol flowing out of the rectifying holes 12 can collide with the tube wall 21 or the top plate 22 of the aerosol mixing tube 2 for re-mixing, thereby greatly improving the uniformity of aerosol mixing.

[0028] Specifically, as Figure 1As shown, the main body 1 includes a connecting portion 110 connected to the aerosol mixing tube 2 and a rectifying portion 120 for rectifying the aerosol. The accommodating cavity 11 penetrates through the connecting portion 110 and extends into the rectifying portion 120. The connecting portion 110 communicates with the aerosol intake pipe, and the rectifying holes 12 are provided on the side wall of the rectifying portion 120. More specifically, the main body 1 is generally an integral rotary body structure. For ease of processing, the accommodating cavity 11 is generally cylindrical, and the axis of the accommodating cavity 11 coincides with the axis of the main body 1. The upper end of the connecting portion 110 is provided with a threaded structure for connecting to the top plate 22 of the aerosol mixing tube 2, and the lower end is connected to the rectifying portion 120. The accommodating cavity 11 extends from the upper end of the connecting portion 110 towards its lower end and extends into the rectifying portion 120, but does not penetrate through the rectifying portion 120.

[0029] As Figure 3 shown, in another embodiment, the connecting portion 110 may not be provided with a threaded structure, and it is connected to the top plate 22 by welding or interference fit.

[0030] Continuing to refer to Figure 3 shown, in yet another embodiment, a chamfer β is provided at the entrance of the accommodating cavity 11, and the chamfer β is less than or equal to 10°. The chamfer β structure is beneficial for the aerosol to smoothly enter the accommodating cavity 11 and improves the mixing efficiency.

[0031] With the above structure, the rectifying container described in this embodiment has a simple structure, a simple processing technology, and is convenient for installation.

[0032] Specifically, in combination with Figure 1 and Figure 2 shown, the rectifying portion 120 includes a first end 121 and a second end 122. One end of the first end 121 is connected to the connecting portion 110, the other end of the first end 121 is connected to the second end 122, and a plurality of the rectifying holes 12 are provided on the side wall of the first end 121. In the direction from the connecting portion 110 to the second end 122, the cross-sectional area of the first end 121 gradually increases. In other words, along the axial direction, the cross-sectional area of the first end 121 gradually increases from top to bottom. Or rather, along the axial direction, the outer diameter of the first end 121 gradually increases from top to bottom.

[0033] With the above solution, the first end 121 with a gradually increasing cross-sectional area from top to bottom can make the rectifying holes 12 distributed on its side wall as close as possible to the tube wall 21 or the top plate 22 of the aerosol mixing tube 2, so as to shorten the travel of the aerosol to the tube wall 21 or the top plate 22, avoid affecting the impact force received by the aerosol, and further affect the mixing effect of the aerosol.

[0034] Continue to refer to Figure 1 As shown, preferably, in the direction from the connecting portion 110 to the second end 122, the cross-sectional area of the second end 122 gradually decreases. That is to say, in the axial direction, the cross-sectional area of the second end 122 gradually decreases from top to bottom. Or rather, in the axial direction, the outer diameter of the second end 122 gradually decreases from top to bottom.

[0035] With the above solution, the second end 122 can guide the flow of the aerosol, enabling the aerosol to flow smoothly downward, and preventing the aerosol from forming a vortex at the bottom of the second end 122, which affects its fall in the aerosol mixing tube 2.

[0036] Continue to refer to Figure 1 and Figure 2 As shown, on the side wall of the first end 121, multiple rows of rectifying holes 12 are provided at intervals in the direction from the connecting portion 110 to the second end 122. In other words, along the axial direction of the first end 121, single-row or multiple rows of rectifying holes 12 are provided at intervals on the side wall of the first end 121. A plurality of rectifying holes 12 in each row are respectively arranged uniformly along the circumferential direction of the first end 121. Further, the number of rectifying holes 12 included in each row is substantially the same, and the number of rectifying holes 12 included in each row is greater than or equal to 3. The angles α between the multiple rectifying holes 12 in the same row and the vertical direction are the same, while in different rows of rectifying holes 12, the angles α between each row of rectifying holes 12 and the vertical direction are different, and preferably, the angles α between each row of rectifying holes 12 and the vertical direction gradually increase from the connecting portion 110 to the second end 122. For example, in this embodiment, five rows of rectifying holes 12 are provided on the side wall of the first end 121 of the rectifying portion 120. From top to bottom, the angles between the five rows of rectifying holes 12 and the vertical direction are α1, α2, α3, α4, α5 respectively, where α5 > α4 > α3 > α2 > α1.

[0037] With the above solution, since the outer diameter of the first end 121 of the rectifying portion 120 gradually increases, and the outer diameters of the first end 121 corresponding to different rows of rectifying holes 12 are different, therefore, when each row has the same number of rectifying holes 12 and the rectifying holes 12 in each row are uniformly distributed along the circumferential direction of the first end 121, the rectifying holes 12 in adjacent rows are arranged in a staggered manner, enabling the aerosol to be ejected from all directions, which is beneficial to the uniform mixing of the aerosol. In addition, in the direction from top to bottom, the angles between each row of rectifying holes 12 and the vertical direction gradually increase, which also enables the aerosol to be ejected from all directions, further facilitating the uniform mixing of the aerosol.

[0038] In the present invention, specific embodiments are used to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A rectifying container for rectifying an aerosol, which is arranged in an aerosol mixing tube and communicated with an aerosol inlet pipe, the aerosol mixing tube comprising a tube wall and a top plate arranged at the top of the tube wall, and is characterized in that, It includes a main body disposed in the aerosol mixing tube. An accommodation cavity is provided in the main body. The main body is also provided with a plurality of rectifying holes penetrating through the side wall of the accommodation cavity. A plurality of the rectifying holes are all located below the top plate of the aerosol mixing tube. The accommodation cavity is communicated with the aerosol inlet pipe, and the accommodation cavity is communicated with the aerosol mixing tube through the rectifying holes. The opening direction of the rectifying holes is upward, and the included angle between the rectifying holes and the vertical direction is between 30° and 65°, so that the aerosol flowing out of the rectifying holes can collide with the tube wall or the top plate.

2. The rectifying container according to claim 1, characterized in that, The main body includes a connecting part connected to the aerosol mixing tube and a rectifying part for rectifying the aerosol. The accommodation cavity penetrates through the connecting part and extends into the rectifying part. The connecting part is communicated with the aerosol inlet pipe, and the rectifying holes are arranged on the side wall of the rectifying part.

3. The rectifying container according to claim 2, characterized in that, The rectifying part includes a first end and a second end. One end of the first end is connected to the connecting part, and the other end of the first end is connected to the second end. The rectifying holes are arranged on the side wall of the first end. The cross-sectional area of the first end becomes larger from the connecting part to the second end.

4. The rectifying container according to claim 3, characterized in that, The cross-sectional area of the second end becomes smaller from the connecting part to the second end.

5. The rectifying container according to claim 3, characterized in that, A plurality of rows of rectifying holes are arranged at intervals on the side wall of the first end. A plurality of rectifying holes in each row are evenly distributed along the circumferential direction of the first end.

6. The rectifying container according to claim 5, characterized in that, The number of rectifying holes included in each row of rectifying holes is greater than or equal to 3.

7. The rectifying container according to claim 5, characterized in that, The included angles between the plurality of rectifying holes in the same row of rectifying holes and the vertical direction are the same.

8. The rectifying container according to claim 5, characterized in that, Among different rows of rectifying holes, the included angles between each row of rectifying holes and the vertical direction are different.

9. The rectifying container according to claim 5, characterized in that, Among different rows of rectifying holes, the included angles between each row of rectifying holes and the vertical direction become larger from the connecting part to the second end.

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