CN217056364U - Automatic air volume adjusting valve - Google Patents
Automatic air volume adjusting valve Download PDFInfo
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- CN217056364U CN217056364U CN202123369276.1U CN202123369276U CN217056364U CN 217056364 U CN217056364 U CN 217056364U CN 202123369276 U CN202123369276 U CN 202123369276U CN 217056364 U CN217056364 U CN 217056364U
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Abstract
The utility model relates to the technical field of blast valves, and discloses an automatic blast regulating valve, which comprises a box body, a supporting frame, a wind guide blade assembly and a rotary regulating device, wherein the upper end of the box body is provided with an air outlet communicated with the cavity of the box body; the two support frames are arranged on two sides in the box body and are close to the air outlet; the wind guide blade assembly can be connected between the two support frames in a swinging mode and can swing up and down relative to the box body to adjust the airflow of the air outlet; the rotary adjusting device is arranged on the box body and connected with the air guide blade assembly, and can drive the air guide blade assembly to automatically swing in the vertical direction relative to the box body. The utility model provides an automatic air quantity regulating valve can reach the effect of the air flow of automatically regulated air exit, does not need manual operation, easy operation, and intelligent control can stabilize flow ratio better, guarantees the air current velocity of flow steady operation always.
Description
Technical Field
The utility model relates to an air volume valve technical field especially relates to an automatic air volume adjusting valve.
Background
The biological safety cabinet is not only a box type air purification negative pressure safety device which can prevent aerosol dissipation caused by dangerous or unknown biological particles in the experimental operation and treatment process, but also can be widely applied to scientific research, teaching, clinical examination and production in the fields of microbiology, biomedicine, genetic engineering, biological products and the like, and is the most basic safety protection equipment in a first-level protective barrier in laboratory biological safety. The working principle of the biological safety cabinet is mainly that outside air is filtered by a high-efficiency air filter and then enters the safety cabinet, so that a processed sample is prevented from being polluted; it should be noted that the stable flow ratio needs to be formed after the internal airflow in the safety cabinet is filtered by the high-efficiency filter, so as to meet the range value specified by YY 0569 pharmaceutical industry standard. But current biological safety cabinet realizes the flow ratio through increasing one by outer blower, and the structure is complicated, can't intelligent fine setting to satisfy the scope value of regulation, it is big that the air current velocity of flow beats moreover easily to appear, the not enough condition of stability.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's problem, providing one kind and not needing manual operation, easy operation, intelligent control and can stabilize the automatic air volume regulating valve of flow ratio better.
In order to achieve the purpose, the utility model adopts the following scheme:
an automatic air volume adjusting valve comprises a box body, wherein the upper end of the box body is provided with an air outlet communicated with a cavity of the box body; the automatic air volume adjusting valve further comprises:
the two support frames are arranged on two sides in the box body and are close to the air outlet;
the air guide blade assembly is connected between the two support frames in a swinging manner and can swing up and down relative to the box body to adjust the airflow flow of the air outlet;
and the rotary adjusting device is arranged on the box body, is connected with the air guide blade assembly and can drive the air guide blade assembly to automatically swing up and down relative to the box body.
Further, the air guide blade assembly comprises a driving blade, a driven blade and a linkage rod; one end of the driving blade is connected with one support frame in a swinging mode, and the other end of the driving blade is connected with the rotary adjusting device;
the plurality of driven blades are distributed along the length direction of the supporting frames and can be connected between the two supporting frames in a swinging mode;
the driving blade is in linkage connection with the plurality of driven blades through the linkage rod so that the driven blades synchronously swing along with the driving blade relative to the box body in the vertical direction to adjust the airflow flow of the air outlet.
Furthermore, the driving blade and the supporting frame, the driven blade and the supporting frame, the driving blade and the linkage rod and the driven blade and the linkage rod are connected in a swinging mode through a driving screw.
Further, the active blade includes a first blade main body, a first connection plate, and a first mounting plate; two opposite first connecting plates are respectively and vertically connected to two ends of one side of the first blade main body; the first mounting plate is connected to the other side of the first blade main body;
the driven blade comprises a second blade main body, a second connecting plate and a second mounting plate; two opposite second connecting plates are respectively and vertically connected to two ends of one side of the second blade main body; the second mounting plate is connected to the other side of the second blade body;
the first connecting plate at one end of the first blade main body is connected with one of the support frames, the second connecting plate is connected with the support frames, the first connecting plate is connected with the linkage rod, and the second connecting plate is connected with the linkage rod in a swinging mode through the plug beating screw.
Furthermore, the first blade main body and the two first connecting plates are integrally bent and formed; the second blade main body and the two second connecting plates are integrally bent and formed.
Furthermore, the top end face of the box body is connected with an air guide pipe body communicated with the air outlet.
Furthermore, the air guide pipe body is connected with the top end face of the box body through a screw.
Further, the rotation adjusting means includes a rotation driver and a rotation shaft; the rotating shaft can be rotatably arranged on the box body; one end of the rotating shaft is connected with the rotating driver, and the other end of the rotating shaft penetrates through one support frame to be connected with the driving blade.
Further, the wind speed sensor is also included; the wind speed sensor is arranged on the box body and below the wind guide blade assembly and used for detecting the wind speed of the central area of the box body.
Further, the supporting frame comprises a supporting vertical plate and a supporting transverse plate; the wind guide blade assembly can be connected between the inner sides of the two supporting vertical plates in a swinging mode; the two supporting transverse plates are respectively vertical to the upper end and the lower end of the outer side of the supporting vertical plate; the supporting vertical plates and the two supporting transverse plates are encircled to form a positioning groove used for arranging a positioning convex part matched with the clamping sleeve in the box body.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses it is automatic relative to utilize rotation regulation device drive fan blade subassembly between two support frames the up-and-down direction swing of box to can utilize the size that the fan blade subassembly changed the air exit, in order to reach the effect of the air current flow of adjusting the air exit, do not need manual operation, easy operation, intelligent control can stabilize flow ratio better, guarantees the air current velocity of flow steady operation always, in order to satisfy the scope value of regulation.
Drawings
The present application will be described in further detail with reference to the drawings and the following detailed description.
Fig. 1 is a schematic view of the three-dimensional structure of the automatic air volume adjusting valve of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the support frame, the fan blade assembly and the rotation adjusting device of the present invention.
The drawing comprises the following steps:
the wind-guiding vane assembly comprises a box body 1, an air outlet 11, a support frame 2, a support vertical plate 21, a support transverse plate 22, a positioning groove 23, a wind-guiding vane assembly 3, a driving vane 31, a first vane main body 311, a first connecting plate 312, a first mounting plate 313, a driven vane 32, a second vane main body 321, a second connecting plate 322, a second mounting plate 323, a linkage rod 33, a rotation adjusting device 4, a rotation driver 41, a rotation shaft 42, a plugging screw 5, a wind-guiding pipe body 6 and a wind speed sensor 7.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 to 2, an automatic air volume adjusting valve comprises a box body 1, wherein an air outlet 11 communicated with a cavity of the box body 1 is formed at the upper end of the box body 1; the automatic air quantity regulating valve further comprises a support frame 2, an air guide blade assembly 3 and a rotary regulating device 4. The two support frames 2 are arranged on two sides in the box body 1 and close to the air outlet 11. The air guide blade component 3 can be connected between the two support frames 2 in a swinging mode and can be opposite to the box body 1, the air flow of the air outlet 11 can be adjusted by swinging in the vertical direction, the air guide blade component 3 and the two support frames 2 are connected in a swinging mode stably, and the air flow of the air outlet 11 can be adjusted stably by the air guide blade component 3. The rotary adjusting device 4 is arranged on the box body 1 and connected with the air guide blade assembly 3, and can drive the air guide blade assembly 3 to automatically swing up and down relative to the box body 1.
This automatic air regulation valve utilizes 4 drive guide vane assemblies 3 of rotary adjusting device to be relative automatically between two support frames 2 the up-and-down direction swing of box 1 to can utilize guide vane assemblies 3 to change the size of air exit 11, in order to reach the effect of adjusting the air current flow of air exit 11, do not need manual operation, easy operation, intelligent control can stabilize the flow ratio better, guarantees the air current velocity of flow steady operation always, in order to satisfy the scope value of regulation.
Further, the air guide blade assembly 3 comprises a driving blade 31, a driven blade 32 and a linkage rod 33; one end of the driving blade 31 is connected with one support frame 2 in a swinging way, and the other end of the driving blade is connected with the rotary adjusting device 4; the plurality of driven blades 32 are distributed along the length direction of the support frames 2 and can be connected between the two support frames 2 in a swinging manner; the driving blade 31 is linked with the plurality of driven blades 32 through the linkage rod 33 so that the driven blades 32 synchronously swing along with the driving blade 31 relative to the box body 1 in the vertical direction to adjust the airflow rate of the air outlet 11. The swing angle of the air guide blade assembly 3 is automatically controlled by the rotation adjusting device 4, the driving blade 31 swings back and forth relative to the air outlet 11 in the vertical direction by the rotation adjusting device 4, and the driven blades 32 also swing back and forth along with the driving blade 31 to the air outlet 11 in the vertical direction under the transmission of the linkage rod 33, so that the air flow of the air outlet 11 is adjusted. And moreover, the plurality of driven blades 32 are combined with the driving blade 31, and a multi-blade mode is adopted, so that the air quantity can be more accurately adjusted, compared with a single large blade, the rotating radius of each blade is smaller, the space is saved, and the height of the automatic air quantity adjusting valve is reduced. Therefore, when the biological safety cabinet is limited by the height of a place, the automatic air quantity regulating valve can save the height space and avoid the biological safety cabinet from being limited by the height.
In the present embodiment, the rotation adjusting device 4 includes a rotation driver 41 and a rotation shaft 42; the rotating shaft 42 can be rotatably arranged on the box body 1; one end of the rotating shaft 42 is connected to the rotating driver 41, and the other end passes through one of the support frames 2 to be connected to the driving vane 31. The rotary actuator 41 is a conventional rotary actuator 41 implemented by connecting a motor and a transmission structure with a rotary shaft 42. The rotation angles of the driving blades 31 and the driven blades 32 are controlled by the rotation driver 41, that is, in the process that the rotation driver 41 drives the rotation shaft 42 to rotate, the driving blades 31 and the driven blades 32 are both parallel to the top surface of the air outlet 11, the air outlet 11 is completely closed, the outward discharge resistance is maximum, and the air flow rate is 0%; if the driving blade 31 and the driven blade 32 are both horizontally vertical to the top surface of the air outlet 11, the air outlet 11 is completely opened, the outward discharge resistance is minimum, and the passing rate of the airflow flow is 100%.
In the experiment of the biosafety cabinet, in order to design a good airflow ratio, the included angle formed by the driving blade 31 and the top surface of the air outlet 11 and the included angle formed by the driven blade 32 and the top surface of the air outlet 11 are both 30 degrees, so that the optimal airflow ratio is achieved.
Preferably, the driving blade 31 and the supporting frame 2, the driven blade 32 and the supporting frame 2, the driving blade 31 and the linkage rod 33, and the driven blade 32 and the linkage rod 33 are connected in a swinging manner through a driving screw 5. The driving blade 31 and the driven blade 32 are both connected to the support frame 2 by the plug screw 5, the driving blade 31 and the plug screw 5 are also connected between the linkage rods 33 and between the driven blade 32 and the linkage rods 33, and the driving blade 31 and the plug screw 5, the driven blade 32 and the plug screw 5 and the linkage rods 33 are both in clearance fit with each other, so that the driving blade 31 and the plug screw 5 are relatively movable, and the driven blade 32 synchronously swing up and down along with the driving blade 31 relative to the air outlet 11 to adjust the air flow of the air outlet 11.
Specifically, the driving blade 31 includes a first blade body 311, a first connecting plate 312, and a first mounting plate 313; two opposite first connecting plates 312 are respectively and vertically connected to two ends of one side of the first blade body 311; the first mounting plate 313 is connected to the other side of the first blade body 311; the driven blade 32 includes a second blade body 321, a second connection plate 322, and a second mounting plate 323; two opposite second connecting plates 322 are respectively and vertically connected to two ends of one side of the second blade main body 321; the second mounting plate 323 is coupled to the other side of the second blade body 321; the first connecting plate 312 at one end of the first blade main body 311 is swingably connected with one of the support frames 2, the second connecting plate 322 is connected with the support frame 2, the first connecting plate 312 is connected with the linkage rod 33, and the second connecting plate 322 is connected with the linkage rod 33 through the driving screws 5. Through set up first connecting plate 312 and first mounting panel 313 on first blade main part 311, set up second connecting plate 322 and second mounting panel 323 on second blade main part 321, make things convenient for between first blade main part 311 and the support frame 2, but realize swinging between second blade main part 321 and the support frame 2 and be connected to and can take place the linkage between first blade main part 311 and the second blade main part 321, make a plurality of second blade main parts 321 along with the synchronous reciprocal swing of upper and lower direction relative air exit 11 of first blade main part 311, in order to adjust the airflow flow of air exit 11 is connected stably, simple structure.
In order to accelerate the production and improve the production efficiency, the first blade main body 311 and the two first connecting plates 312 are integrally formed by bending; the second blade body 321 and the two second connecting plates 322 are integrally formed by bending.
In the present embodiment, an air guide duct body 6 communicating with the air outlet 11 is connected to the top end surface of the casing 1. The air guide pipe body 6 is connected with the top end face of the box body 1 through a screw. The air guide pipe body 6 is connected with the external air pipe, the screws can be detached if the biological safety cabinet is required to be moved independently, the external air pipe is not required to be detached, the connection is stable, and the disassembly and the assembly are convenient.
In the present embodiment, the automatic air volume adjusting valve further includes an air velocity sensor 7; the wind speed sensor 7 is arranged on the box body 1 and below the wind guide blade assembly 3 and is used for detecting the wind speed in the central area of the box body 1. By installing the wind speed sensor 7 on the box body 1 and utilizing the wind guide blade assembly 3 to complete more accurate adjustment of wind volume, the wind speed in the central area of the box body 1 can be detected better and stably, airflow interference in different directions is avoided, and therefore actual wind speed can be fed back truly.
In order to better mount the support frame 2 on the box body 1, the support frame 2 comprises a support vertical plate 21 and a support transverse plate 22; the wind guide blade assembly 3 can be connected between the inner sides of the two supporting vertical plates 21 in a swinging manner; the two supporting transverse plates 22 are respectively vertical to the upper end and the lower end of the outer side of the supporting vertical plate 21; the supporting vertical plates 21 and the two supporting transverse plates 22 enclose a positioning groove 23 for being provided with a positioning convex part matched with the clamping sleeve in the box body 1. Enclose into constant head tank 23 through riser and two blocks of support diaphragm 22, can cooperate with the location convex part that sets up in box 1, make support frame 2 stable installation on box 1 to make guide vane subassembly 3 can connect steadily between two support frames 2, be favorable to the air flow of stable regulation air exit 11.
To sum up, the embodiment of the utility model provides an automatic air volume adjusting valve, wherein, this automatic air volume adjusting valve utilizes 4 drive guide vane assembly 3 of rotary adjusting device to be automatic relative between two support frames 2 the up-and-down direction swing of box 1 to can utilize guide vane assembly 3 to change the size of air exit 11, in order to reach the effect of adjusting the air flow of air exit 11, do not need manual operation, easy operation, intelligent control can stabilize flow ratio better, guarantees the air flow velocity steady operation always, in order to satisfy the scope value of regulation.
The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.
Claims (10)
1. An automatic air volume adjusting valve comprises a box body, wherein the upper end of the box body is provided with an air outlet communicated with a cavity of the box body; its characterized in that, air volume automatic regulating valve still includes:
the two support frames are arranged on two sides in the box body and are close to the air outlet;
the air guide blade assembly is connected between the two support frames in a swinging manner and can swing up and down relative to the box body to adjust the airflow flow of the air outlet;
and the rotary adjusting device is arranged on the box body, is connected with the air guide blade assembly and can drive the air guide blade assembly to automatically swing up and down relative to the box body.
2. The automatic air volume adjusting valve according to claim 1, wherein the air guide blade assembly comprises a driving blade, a driven blade and a linkage rod; one end of the driving blade is connected with one support frame in a swinging mode, and the other end of the driving blade is connected with the rotary adjusting device;
the plurality of driven blades are distributed along the length direction of the supporting frames and can be connected between the two supporting frames in a swinging mode;
the driving blade is in linkage connection with the driven blades through the linkage rod, so that the driven blades synchronously swing relative to the box body along with the driving blade in the vertical direction to adjust the airflow flow of the air outlet.
3. The automatic air volume adjusting valve according to claim 2, wherein the driving blade and the support frame, the driven blade and the support frame, the driving blade and the linkage rod, and the driven blade and the linkage rod are connected in a swinging manner through a driving screw.
4. The automatic air volume adjusting valve according to claim 3, characterized in that the driving vane comprises a first vane main body, a first connecting plate and a first mounting plate; two opposite first connecting plates are respectively and vertically connected to two ends of one side of the first blade main body; the first mounting plate is connected to the other side of the first blade main body;
the driven blade comprises a second blade body, a second connecting plate and a second mounting plate; two opposite second connecting plates are respectively and vertically connected to two ends of one side of the second blade main body; the second mounting plate is connected to the other side of the second blade body;
the first connecting plate at one end of the first blade main body is connected with one of the support frames, the second connecting plate is connected with the support frames, the first connecting plate is connected with the linkage rod, and the second connecting plate is connected with the linkage rod in a swinging mode through the plug beating screw.
5. The automatic air volume adjusting valve according to claim 4, wherein the first blade main body and the two first connecting plates are integrally formed by bending; the second blade main body and the two second connecting plates are integrally bent and formed.
6. The automatic air volume adjusting valve according to claim 1, wherein an air guide pipe body communicated with the air outlet is connected to a top end surface of the box body.
7. The automatic air volume adjusting valve according to claim 6, wherein the air guide pipe body is connected to the top end surface of the box body by a screw.
8. The automatic air volume adjusting valve according to claim 2, characterized in that the rotary adjusting device comprises a rotary driver and a rotary shaft; the rotating shaft can be rotatably arranged on the box body; one end of the rotating shaft is connected with the rotating driver, and the other end of the rotating shaft penetrates through one of the supporting frames to be connected with the driving blade.
9. The automatic air volume adjusting valve according to claim 1, further comprising an air velocity sensor; the wind speed sensor is arranged on the box body and below the wind guide blade assembly and used for detecting the wind speed of the central area of the box body.
10. The automatic air volume adjusting valve according to claim 1, wherein the support frame comprises a support vertical plate and a support transverse plate; the wind guide blade assembly can be connected between the inner sides of the two supporting vertical plates in a swinging mode; the two supporting transverse plates are respectively vertical to the upper end and the lower end of the outer side of the supporting vertical plate; the supporting vertical plates and the two supporting transverse plates are encircled to form a positioning groove used for arranging a positioning convex part matched with the clamping sleeve in the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123369276.1U CN217056364U (en) | 2021-12-29 | 2021-12-29 | Automatic air volume adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123369276.1U CN217056364U (en) | 2021-12-29 | 2021-12-29 | Automatic air volume adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217056364U true CN217056364U (en) | 2022-07-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123369276.1U Active CN217056364U (en) | 2021-12-29 | 2021-12-29 | Automatic air volume adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217056364U (en) |
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2021
- 2021-12-29 CN CN202123369276.1U patent/CN217056364U/en active Active
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