Aerosol diluting device

Abstract

The utility model provides an aerosol diluting device which comprises a three-way pipe, two shunting ports of the three-way pipe are respectively connected with a filter and a three-way mixing proportional valve, and the other side of the filter is connected with the three-way mixing proportional valve. The three-way mixing proportional valve comprises a valve shell, inlets symmetrically formed in the two side walls of the valve shell and outlets formed in the side walls perpendicular to the inlets, the inner wall of the valve shell is further rotationally connected with a cavity valve element, and the side wall of the cavity valve element is provided with two asymmetrical flow channels matched with the two inlets respectively. The two inlets are respectively connected to a three-way pipe and a three-way mixing proportional valve; by arranging the three-way mixing proportional valve, high-concentration aerosol and clean air can be mixed through collision of the high-concentration aerosol and the clean air, and meanwhile the mixing proportion of the high-concentration aerosol and the clean air can be achieved through rotation of the cavity valve element, so that integration of functions is achieved, and the structural compactness is improved.

Description

Technical Field

[0001] This utility model relates to the field of aerosol dilution technology, and in particular to an aerosol dilution device. Background Technology

[0002] When detecting aerosols, dilution is required. This involves splitting the high-concentration aerosols into two streams. One stream uses a filter to turn the aerosols into clean air, which is then mixed with the high-concentration aerosols in the other stream to achieve the dilution effect.

[0003] A search revealed a Chinese patent publication number CN110220765B, which discloses an aerosol dilution device, comprising a sampling inlet channel, a sampling outlet channel, a mixing chamber connected to the sampling outlet channel, a filter channel connecting the sampling inlet channel and the mixing chamber, and an aerosol channel connecting the sampling inlet channel and the mixing chamber. The filter channel is equipped with a filter device and a flow regulating valve, and the aerosol channel is equipped with a perforated plate assembly that restricts the aerosol channel.

[0004] The aforementioned patent has the following shortcomings: its mixing chamber and flow regulating valve are set independently, and both are necessary components, which cannot form a highly centralized structural assembly, thus making the overall dilution device not compact enough.

[0005] Therefore, an aerosol dilution device is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide an aerosol dilution device to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: an aerosol dilution device includes a three-way pipe, two branch ports of the three-way pipe are respectively connected to a filter and a three-way mixing proportional valve, the other side of the filter is connected to the three-way mixing proportional valve, the three-way mixing proportional valve includes a valve body, inlets symmetrically arranged on two side walls of the valve body and an outlet arranged on a side wall perpendicular to the inlets, the inner wall of the valve body is also rotatably connected to a cavity valve core, the side wall of the cavity valve core has two asymmetrical flow channels that respectively cooperate with the two inlets; the two inlets are respectively connected to the three-way pipe and the three-way mixing proportional valve.

[0008] In some embodiments, the inner walls of both inlets are fixed with spiral blades, and the two sets of spiral blades rotate in opposite directions.

[0009] In some embodiments, the inner wall of the outlet is fixed with multiple sets of mixing rings, each mixing ring consisting of two mutually cooperating semi-spiral blades rotating in opposite directions.

[0010] In some embodiments, the inner wall of the semi-spiral plate is provided with uniform through holes.

[0011] In some embodiments, the cavity valve core is rotatably connected to the inside of the valve housing via a valve stem, and the end of the valve stem is driven by a handle for driving the valve stem to rotate.

[0012] In some embodiments, a positioning ring is fixed to the inner wall of the valve housing located around the valve stem, the side wall of the positioning ring is provided with a scale, and the end of the valve stem is provided with an indicator arrow that cooperates with the scale.

[0013] In some embodiments, the handle is rotatably connected to the inner wall of the valve stem, the inner wall of the positioning ring is provided with a toothed groove, and the valve stem is radially slidably connected with a plurality of toothed sliders that cooperate with the toothed grooves. The other side of the toothed slider is connected to the inner wall of the valve stem through an elastic body.

[0014] In some embodiments, the sidewall of the handle is connected to a plurality of toothed sliders by a plurality of pull cords.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. An aerosol dilution device, which, by setting a three-way mixing proportion valve, can mix high-concentration aerosols with clean air by collision, and can also achieve the mixing ratio of high-concentration aerosols and clean air by rotating the cavity valve core, thereby realizing the integration of functions and increasing the structural compactness.

[0017] 2. An aerosol dilution device, by setting a spiral blade, utilizes the guiding energy of the spiral blade to make the high-concentration aerosol and the clean air swirl in opposite directions, thereby enabling them to have axial and circumferential collisions in the swirling direction. On the one hand, this increases the mixing effect, and on the other hand, it prevents the large kinetic energy loss caused by only axial collisions.

[0018] 3. An aerosol dilution device, by setting a mixing ring and configuring the mixing ring as two mutually cooperating semi-spiral plates with opposite rotation directions, can utilize swirling collisions to remix, thereby increasing the mixing effect. In addition, by setting a through hole, part of the guided aerosol will also flow linearly through the through hole, which will also mix with the aerosol that generates swirling flow, further increasing the mixing efficiency.

[0019] 4. An aerosol dilution device, by setting a toothed groove and a toothed slider, can lock the valve stem and the positioning ring, thereby ensuring the stability of the mixing ratio of the entire three-way mixing proportion valve. At the same time, it is equipped with a pull rope, an elastic body, etc., and can be unlocked and locked by rotating the handle, which increases the convenience of operation.

[0020] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the installation position of this utility model;

[0023] Figure 2 This is a structural diagram of the three-way mixing proportioner valve of this utility model;

[0024] Figure 3 This is a structural diagram of the spiral blade of this utility model;

[0025] Figure 4 This is a structural diagram of the mixing ring of this utility model;

[0026] Figure 5 This is a structural diagram of the drive part of the cavity valve core of this utility model;

[0027] Figure 6 This is a cross-sectional view of the positioning ring, handle, and valve stem of this utility model.

[0028] Figure label:

[0029] 1-Three-way pipe, 2-Filter, 3-Three-way mixing proportioning valve, 4-Valve body, 5-Flow channel, 6-Inlet, 7-Outlet, 8-Cavity valve core, 9-Spiral blade 1, 10-Mixing ring, 11-Half-spiral blade, 12-Through hole, 13-Positioning ring, 14-Scale, 15-Indicating arrow, 16-Handle, 17-Valve stem, 18-Pull rope, 19-Groove, 20-Toothed slider, 21-Elastomer. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] Example 1:

[0034] like Figures 1-6 As shown, an aerosol dilution device includes a three-way pipe 1, with two branch ports of the three-way pipe 1 connected to a filter 2 and a three-way mixing proportion valve 3, respectively, and the other side of the filter 2 connected to the three-way mixing proportion valve 3.

[0035] The three-way mixing proportioning valve 3 includes a valve body 4, inlets 6 symmetrically arranged on two side walls of the valve body 4, and outlets 7 arranged on the side walls perpendicular to the inlets 6. The inner wall of the valve body 4 is also rotatably connected to a cavity valve core 8. The side walls of the cavity valve core 8 have two asymmetrical flow channels 5 that respectively cooperate with the two inlets 6.

[0036] The two inlets 6 are respectively connected to the three-way pipe 1 and the three-way mixing proportioning valve 3.

[0037] In use, this device allows high-concentration aerosol to be introduced through the inlet of the three-way pipe 1. After the aerosol is split through the three-way pipe 1, one stream of high-concentration aerosol directly enters the flow channel 5 from the inlet 6 and then enters the cavity valve core 8. The other stream of high-concentration aerosol is filtered by the filter 2 to become clean air, and then enters the cavity valve core 8 through the other inlet 6 and flow channel 5. When the high-concentration aerosol and clean air are injected into the cavity valve core 8 through the two flow channels 5, they collide and mix at a certain angle, and then the diluted aerosol is discharged from the outlet 7. At the same time, when the cavity valve core 8 rotates, it increases the overlap area between one set of flow channels 5 and the inlet 6, while decreasing the overlap area between the other set of flow channels 5 and the inlet 6, thereby controlling the cross-sectional area of ​​the flow channels for high-concentration aerosol and clean air, and thus controlling the flow rate to achieve the effect of controlling the dilution concentration.

[0038] This device, by setting a three-way mixing ratio valve 3, can mix high-concentration aerosols with clean air through collision. At the same time, the mixing ratio of high-concentration aerosols and clean air can be adjusted by rotating the cavity valve core 8, thus realizing the integration of functions and increasing the structural compactness.

[0039] In this embodiment, the inner walls of both inlets 6 are fixed with spiral blades 9, and the two sets of spiral blades 9 rotate in opposite directions.

[0040] When high-concentration aerosols and clean air flow from two inlets 6 respectively, a swirling flow is formed by the spiral blades 9. Since the two sets of spiral blades 9 are arranged in opposite directions, the swirling directions of the high-concentration aerosols and clean air are opposite, thus resulting in axial and circumferential collisions in the swirling direction.

[0041] This device, by setting up a spiral blade 9, utilizes the guiding energy of the spiral blade 9 to make the high-concentration aerosol and the clean air swirl in opposite directions, thereby enabling them to have axial and circumferential collisions in the swirling direction. On the one hand, this increases the mixing effect, and on the other hand, it prevents the large kinetic energy loss caused by only axial collisions.

[0042] In this embodiment, the inner wall of the outlet 7 is fixed with multiple sets of mixing rings 10, each mixing ring 10 consisting of two mutually cooperating semi-spiral plates 11 with opposite rotation directions.

[0043] The inner wall of the semi-spiral plate 11 is provided with uniform through holes 12.

[0044] When the initially mixed diluted aerosol flows out through outlet 7, the aerosols located on both sides of outlet 7 collide and mix again after being guided by the semi-spiral plates 11 rotating at different speeds. At the same time, part of the guided aerosols will also flow straight through through holes 12, and it will also mix with the aerosols that generate swirling flow.

[0045] This device, by setting a mixing ring 10 and configuring the mixing ring 10 as two mutually cooperating semi-spiral plates 11 with opposite rotation directions, can utilize the collision of swirling flow to mix again, thereby increasing the mixing effect. In addition, by setting a through hole 12, part of the guided aerosol will also flow in a straight line through the through hole 12, which will also mix with the aerosol that generates swirling flow, further increasing the mixing efficiency.

[0046] In this embodiment: a high-concentration aerosol can be introduced through the inlet of the three-way pipe 1. After the aerosol is diverted through the three-way pipe 1, one stream of high-concentration aerosol directly enters the flow channel 5 from the inlet 6 and thus enters the cavity valve core 8. The other stream of high-concentration aerosol is filtered by the filter 2 to become clean air, and then enters the cavity valve core 8 through another inlet 6 and flow channel 5. When the high-concentration aerosol and clean air are injected into the cavity valve core 8 from the two flow channels 5, they collide and mix at a certain angle, and then the diluted aerosol is discharged from the outlet 7. At the same time, when the cavity valve core 8 rotates, it can increase the overlap area between one set of flow channels 5 and the inlet 6, while decreasing the overlap area between the other set of flow channels 5 and the inlet 6. By controlling the cross-sectional area of ​​the flow channels for high-concentration aerosols and clean air, the flow rate can be controlled to achieve the effect of controlling the dilution concentration. In addition, when high-concentration aerosols and clean air flow from the two inlets 6 respectively, a swirling flow will be formed due to the spiral blades 9. The two sets of spiral blades 9 are arranged in opposite directions, so that the swirling directions of high-concentration aerosols and clean air are opposite, thus giving them axial and circumferential collisions in the swirling direction. At the same time, when the initially mixed diluted aerosols flow out through the outlet 7, the aerosols located on both sides of the outlet 7 are guided by the semi-spiral blades 11 with different rotations and then collide and mix again. At the same time, part of the guided aerosols will also flow straight through the through hole 12, which will also mix with the aerosols that generate the swirling flow.

[0047] Example 2:

[0048] An aerosol dilution device is provided in this embodiment, which is based on Embodiment 1 with the following improvements, such as... Figures 1-6 As shown, the hollow valve core 8 is rotatably connected to the inside of the valve housing 4 via the valve stem 17, and the end of the valve stem 17 is connected to a handle 16 for driving the valve stem 17 to rotate.

[0049] In this embodiment, a positioning ring 13 is fixed on the inner wall of the valve housing 4 located around the valve stem 17. The side wall of the positioning ring 13 is provided with a scale 14, and the end of the valve stem 17 is provided with an indicator arrow 15 that cooperates with the scale 14.

[0050] The cavity valve core 8 can be rotated by rotating the valve stem 17 through the handle 16. During the rotation, the rotation position of the cavity valve core 8 can be sensed by the cooperation of the scale 14 and the indicator arrow 15, thereby determining the ratio of the two flow channels.

[0051] In this embodiment, the handle 16 is rotatably connected to the inner wall of the valve stem 17, the inner wall of the positioning ring 13 is provided with a toothed groove 19, and the valve stem 17 is radially slidably connected with a plurality of toothed sliders 20 that cooperate with the toothed grooves 19. The other side of the toothed sliders 20 is connected to the inner wall of the valve stem 17 through an elastic body 21.

[0052] In this embodiment, the sidewall of the handle 16 is connected to a plurality of toothed sliders 20 by a plurality of pull ropes 18.

[0053] In this embodiment: when the handle 16 is rotated, the valve stem 17 will not rotate in the initial stage of rotation due to the engagement of the toothed slider 20 and the toothed groove 19. As the handle 16 rotates, it pulls the toothed slider 20 inward through the pull rope 18 until the toothed slider 20 disengages from the toothed groove 19, at which point the valve stem 17 rotates. After rotating to the desired position, the handle 16 is released, and the toothed slider 20 is re-inserted into the toothed groove 19 by the elastic force of the elastic body 21, thus completing the locking of the valve stem 17 and the positioning ring 13.

[0054] This device, by setting the toothed groove 19 and the toothed slider 20, can lock the valve stem 17 and the positioning ring 13, thereby ensuring the stability of the mixing ratio of the entire three-way mixing proportional valve 3. At the same time, it is equipped with a pull rope 18, an elastic body 21, etc., and can be unlocked and locked by rotating the handle 16, which increases the convenience of operation.

[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An aerosol dilution device comprising a tee (1), two branches of the tee (1) are connected with a filter (2) and a tee mixing proportional valve (3) respectively, the other side of the filter (2) is connected to the tee mixing proportional valve (3), characterized in that: The three-way mixed proportion valve (3) comprises a valve shell (4), two inlets (6) symmetrically arranged on two side walls of the valve shell (4), and an outlet (7) arranged on a side wall perpendicular to the inlets (6), an inner wall of the valve shell (4) is further rotationally connected with a cavity valve core (8), a side wall of the cavity valve core (8) is provided with two asymmetric flow channels (5) matched with the two inlets (6) respectively; the two inlets (6) are connected with the three-way pipe (1) and the three-way mixed proportion valve (3) respectively.

2. An aerosol dilution device according to claim 1, characterised in that: The inner walls of the two inlets (6) are fixed with helical blades (9), and the two groups of helical blades (9) are opposite in rotation direction.

3. An aerosol dilution device according to claim 1, wherein: The inner wall of the outlet (7) is fixed with multiple mixed flow rings (10), and the mixed flow ring (10) is composed of two half helical blades (11) matched with each other and opposite in rotation direction.

4. An aerosol dilution device according to claim 3, wherein: The inner wall of the half helical blade (11) is provided with uniform through holes (12).

5. An aerosol dilution device according to claim 1, wherein: The cavity valve core (8) is rotationally connected with the inside of the valve shell (4) through a valve rod (17), and the end of the valve rod (17) is drivingly matched with a handle (16) for driving the valve rod (17) to rotate.

6. An aerosol dilution device according to claim 5, wherein: The inner wall of the valve shell (4) located at the periphery of the valve rod (17) is fixed with a positioning ring (13), a side wall of the positioning ring (13) is provided with a scale (14), and the end of the valve rod (17) is provided with an indicating arrow (15) matched with the scale (14).

7. An aerosol dilution device according to claim 6, wherein: The handle (16) is rotationally connected with the inner wall of the valve rod (17), the inner wall of the positioning ring (13) is provided with a gear slot (19), the valve rod (17) is radially slidably connected with multiple toothed sliding blocks (20) matched with the gear slot (19), and the other side of the toothed sliding block (20) is connected with the inner wall of the valve rod (17) through an elastic body (21).

8. An aerosol dilution device according to claim 7, wherein: The side wall of the handle (16) is connected with the multiple toothed sliding blocks (20) through multiple pull ropes (18) respectively.

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