CN202838039U - Gas flow regulator - Google Patents
Gas flow regulator Download PDFInfo
- Publication number
- CN202838039U CN202838039U CN 201220399602 CN201220399602U CN202838039U CN 202838039 U CN202838039 U CN 202838039U CN 201220399602 CN201220399602 CN 201220399602 CN 201220399602 U CN201220399602 U CN 201220399602U CN 202838039 U CN202838039 U CN 202838039U
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- CN
- China
- Prior art keywords
- rotor
- gas flow
- adjusting means
- flow adjusting
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a gas flow regulator which comprises a gas chamber and a rotator. The gas chamber is provided with a gas inlet and a gas outlet; an arc-shaped cut groove communicated with the interior and exterior of the gas chamber is arranged below the gas inlet and the gas outlet; the center of the top of the gas chamber is provided with a cylindrical through hole; the rotor comprises a circular rotor piece and a cylindrical connecting rod arranged above the center of the rotor piece, an arc-shaped notch is arranged at one side surface of the rotor piece, and the thickness of the rotor piece is greater than height of the cut groove; the rotor is disposed in the interior of the gas chamber, and the connecting rod is in rotary sealing cooperation with the rotor and penetrates to the exterior of the gas chamber through the through hole. According to the utility model, the gas flow regulator can stably control gas flow to be in a desired flow range, and a flow value is fed back to a controller through a flow sensor so as to allow the gas flow regulator to realize self-adjusting of gas flow.
Description
Technical field
The utility model relates to a kind of gas flow adjusting means, relates in particular to a kind of gas flow adjusting means for Atmospheric particulates on-line monitoring instrument.
Background technology
China's air particle pollutes and is on the rise, and has become the main trend of following air pollution development.At present, can be divided into on-line monitoring and two kinds of methods of sampling monitoring to the detection of particulate in air matter.The advantage of on-line monitoring be the test duration short, simple to operate, accuracy is high.The method needs to calculate first the volume of the air that detects when calculating the concentration of Atmospheric Grains, so needs a stable gas flow in the test process, the cumulative volume of the gas that the accurate calculating of ability is drawn within a certain period of time.Yet, with the flow control of gas at a stable state, need an automatic regulating device.But, the domestic product that carries out the automatic adjusting of flow in the instrument that is specifically designed to is rarely found, the sensitivity of flow regulating part and stability are lower in the instrument, are difficult to be controlled in the desired minimum zone the flow value of air-flow is stable, have affected the accuracy of measurement result.
Summary of the invention
The purpose of this utility model is as overcoming the defective of prior art, and a kind of automatic gas flow adjusting means is provided, be used for stable, control gas flow exactly.
For achieving the above object, the utility model is by the following technical solutions: a kind of gas flow adjusting means, comprise an air chamber and a rotor, described air chamber is provided with an air intake opening and a gas outlet, be provided with a circular arc grooving that is communicated with inside and outside the air chamber below this air intake opening and the gas outlet, the top center of air chamber is provided with a cylindrical hole; Described rotor comprises circular rotor and the cylindrical connecting link that is located at top, rotor center, and the side of described rotor is provided with a circular-arc cut, and the thickness of this rotor is greater than the height of grooving; Described rotor is positioned over air chamber inside, and connecting link rotary seal cooperation passes the air chamber outside by through hole.
Furtherly, described air chamber comprises a drum-shaped base and the barrel-shaped upper cover plate of a rounding.
Furtherly, the bucket wall of described base is provided with a gas outlet and a circular arc grooving.
Furtherly, described upper cover plate is provided with an air intake opening, and the bucket center, the end of this upper cover plate is provided with a cylindrical hole.
Specifically, the degree of depth of described otch is 3 millimeters.
Specifically, the height of described grooving is 1 millimeter.
Specifically, described grooving and otch are 120 ° circular arc.
Specifically, the equal diameters of the diameter of described through hole and connecting link.
Specifically, the place that agrees with of described connecting link and upper cover plate is provided with sealing O circle.
Specifically, described connecting link is fixedly connected with by screw with rotor, and base is fixedly connected with by screw with upper cover plate.
Compared with prior art, the beneficial effects of the utility model are: 1, the utility model can with the gas flow accurate stable be controlled at required flow range; 2, the utility model can be realized automatic adjusting gas flow.
Description of drawings
Fig. 1 is the decomposing schematic representation of the utility model preferred embodiment.
Fig. 2 is each member work block diagram of the utility model preferred embodiment.
Embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiments and the drawings the technical solution of the utility model is further introduced and explanation.
Embodiment
As shown in Figure 1 and Figure 2, a kind of gas flow adjusting means for PM2.5 on-line monitoring instrument comprises barrel-shaped upper cover plate 1 and the rotor of base 5, rounding of drum-shaped; The bucket wall of base 5 is provided with a gas outlet 7, is provided with together 120 ° circular arc grooving 6 at the bottom position near base, and the height of this grooving 6 is 1 millimeter; The bucket center, the end that the bucket wall of upper cover plate 1 is provided with an air intake opening 3 and upper cover plate 1 is provided with the diameter cylindrical hole 2 consistent with connecting link 11 diameters; There is together 120 ° circular-arc cut 8 side of the circular rotor 9 of rotor, the degree of depth of this otch 8 and thickness are 3 millimeters, there is the cylindrical drum 10 of a projection at the center of rotor 9, and an end of connecting link 11 inserts in the cylindrical drum 10 and by screw rotor is fixedly connected with connecting link 11; Rotor is positioned over the bottom of base 5, for anti-locking apparatus gas leakage, before covering upper cover plate 1 a sealing O circle 12 is set on the connecting link 11 of rotor, and then the through hole 2 that covers upper cover plate 1 and make connecting link 11 pass upper cover plate 1 is connected with outside shaft coupling, under the drive of motor, rotates.
As shown in Figure 2, be each member work block diagram of PM2.5 on-line monitoring instrument system.Air intake opening of the present utility model 3 the place aheads are equipped with the flow sensor of feedback flow value, and the gas of process filter paper enters in the air chamber of the present utility model from air intake opening 3, and when grooving 6 overlapped with otch 8, air entered air chamber from overlapping position.The gas that is entered by air intake opening 3 and in air chamber, mix and discharge by gas outlet 7 by the air that overlapping position enters, and the airshed of gas outlet 7 is constant, therefore, otch 8 is larger with the registration of grooving 6, the air that is entered air chamber by overlapping position is just more, and the gas that is entered by air intake opening 3 is with regard to corresponding minimizing.When otch 8 overlapped fully with grooving 6, the air capacity that is entered by overlapping position was maximum, and is then minimum by the gas that air intake opening 3 enters.Therefore, thus can change by the position of regulating rotor otch 8 regulates gas flow in the gas circuit with the registration of grooving 6.During the device running, by the required flow value of program setting gas circuit, under the cooperation of flow sensor and controller, control driven by motor rotor is to required optimum position.
The above only further specifies technology contents of the present utility model with embodiment; so that the reader is more readily understood; but do not represent embodiment of the present utility model and only limit to this, any technology of doing according to the utility model is extended or recreation, all is subjected to protection of the present utility model.
Claims (10)
1. gas flow adjusting means, it is characterized in that: comprise an air chamber and a rotor, described air chamber is provided with an air intake opening and a gas outlet, is being provided with a circular arc grooving that is communicated with inside and outside the air chamber below this air intake opening and the gas outlet, and the top center of air chamber is provided with a cylindrical hole; Described rotor comprises circular rotor (9) and is located at the cylindrical connecting link (11) of rotor center top, and the side of described rotor (9) is provided with a circular-arc cut (8), and the thickness of this rotor (9) is greater than the height of grooving; Described rotor is positioned over air chamber inside, and connecting link (11) rotary seal cooperation passes the air chamber outside by through hole.
2. described gas flow adjusting means according to claim 1, it is characterized in that: described air chamber comprises a drum-shaped base (5) and the barrel-shaped upper cover plate of a rounding (1).
3. described gas flow adjusting means according to claim 2, it is characterized in that: the bucket wall of described base (5) is provided with a gas outlet (7) and a circular arc grooving (6).
4. described gas flow adjusting means according to claim 2, it is characterized in that: described upper cover plate (1) is provided with an air intake opening (3), and the bucket center, the end of this upper cover plate (1) is provided with a cylindrical hole (2).
5. described gas flow adjusting means according to claim 1, it is characterized in that: the degree of depth of described otch (8) is 3 millimeters.
6. described gas flow adjusting means according to claim 1, it is characterized in that: the height of described grooving (6) is 1 millimeter.
7. described gas flow adjusting means according to claim 1, it is characterized in that: described grooving (6) and otch (8) are 120 ° circular arc.
8. described gas flow adjusting means according to claim 1 is characterized in that: the equal diameters of the diameter of described through hole (2) and connecting link (11).
9. described gas flow adjusting means according to claim 1, it is characterized in that: described connecting link (11) is provided with sealing O circle (12) with the place that agrees with of upper cover plate (1).
10. described gas flow adjusting means according to claim 2, it is characterized in that: described connecting link (11) is fixedly connected with by screw with rotor (9); Base (5) is fixedly connected with by screw with upper cover plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399602 CN202838039U (en) | 2012-08-13 | 2012-08-13 | Gas flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399602 CN202838039U (en) | 2012-08-13 | 2012-08-13 | Gas flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202838039U true CN202838039U (en) | 2013-03-27 |
Family
ID=47949703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220399602 Expired - Lifetime CN202838039U (en) | 2012-08-13 | 2012-08-13 | Gas flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202838039U (en) |
-
2012
- 2012-08-13 CN CN 201220399602 patent/CN202838039U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |