CN205155280U - Variable blast volume venturi pneumatic control valve - Google Patents
Variable blast volume venturi pneumatic control valve Download PDFInfo
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- CN205155280U CN205155280U CN201520385834.9U CN201520385834U CN205155280U CN 205155280 U CN205155280 U CN 205155280U CN 201520385834 U CN201520385834 U CN 201520385834U CN 205155280 U CN205155280 U CN 205155280U
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- courage
- valve body
- courage body
- push rod
- air flow
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Abstract
The utility model provides a variable blast volume venturi pneumatic control valve, which comprises the following components: a valve body, locate the undergauge of valve body inner chamber, locate two axostylus axostyle supports at valve body both ends, install the valve body axle between two axostylus axostyle supports, locate the valve body epaxial be used for with the undergauge matched with courage body, the courage body includes personally experiences sth. Part of the body with the preceding courage that is close to the outside apart from the nearer back courage body of undergauge, the epaxial courage body slider that is equipped with in proper order of valve body between the back courage body and the preceding courage body, courage spring and bile duct, the courage spring is located in courage body slider and the bile duct, the back courage body is connected and can personally experience sth. Part of the body together in the epaxial slip of valve body with the courage to courage body slider, the one end of bile duct is blocked by the axostylus axostyle support rather than adjacent, the other end stretches into in the courage body, the preceding courage body is located on the bile duct. The utility model discloses a courage body is controlled under the effect of spring and air current and is moved for the air current that passes through is the air current of variable blast volume.
Description
Technical field
The utility model relates to a kind of venturi valve, especially relates to a kind of variable air flow venturi control damper.
Background technique
The factor such as pressure, pressure reduction, temperature and humidity, cleanliness of indoor air flow is had to the place of strict demand, risk environment control must be carried out in the place that can produce harm gas as the Laboratory Animal Facility of the operating room of the Biochemistry Experiment room of research institution, hospital, isolation ward, pharmaceutical factory and Production Regional etc.Strictly must monitor the factors such as room pressure, temperature, humidity, air-flow, air purity constantly; prevent the cross pollution between the regions such as research and development, production, office; improve Safety performance, risk environment is effectively protected, make system cloud gray model energy consumption reach reasonable level simultaneously.For meeting the requirement that risk environment controls, strict control can be carried out by the ventilated control system based on venturi valve.At present, venturi valve is divided into determines air quantity valve, bistable valve and variable air flow valve, and wherein, variable air flow valve is because it is by being widely used lower than the response in 1 second and flow feedback signal closed loop control air mass flow to instruction.But current variable air flow valve exists following problem: 1, control accuracy is inadequate, trouble installed by lever and lever shaft, and installs insecure, easily rocks in the automatic control of variable air flow valve; 2, push rod position cannot be fixed; 3, ventilation-sectional area is changed, regulate ventilation volume still by the cooperation of air velocity transducer, wind volume varying controller, valve positioner, valve actuator, the piston of venturi valve is driven to realize, this control mode needs more electronic unit, make venturi valve holistic cost higher, and easily break down.
Therefore, need a kind of control relatively simply badly, and Automated condtrol precision is high, firmly variable air flow venturi control damper installed by lever and lever shaft.
Model utility content
In order to solve above-mentioned the deficiencies in the prior art, the utility model proposes a kind of variable air flow venturi control damper, comprise valve body, be located at the undergauge of described body cavity, be located at two axostylus axostyle supports at described valve body two ends, be installed on the valve body axle between described two axostylus axostyle supports, be located at the courage body for matching with described undergauge on described valve body axle, described courage body comprises apart from the nearer rear courage body of described undergauge and courage body before outside, valve body axle between described rear courage body and front courage body is provided with courage body slide block successively, courage spring and bile duct, described courage spring is located in described courage body slide block and bile duct, described courage body slide block connects rear courage body and can slide on valve body axle together with courage body, one end of described bile duct is blocked by the axostylus axostyle support be adjacent, the other end stretches in courage body, described front courage body is located on described bile duct.
Further, described valve body top is also provided with control electronics, described control electronics is located on a base plate, control electronics comprises electric industrial push rod, the push rod connector be connected with described electric industrial push rod, the lever that is connected with described push rod connector, and described lever connects valve body axle through the space being located at described valve body top.
Further, described base plate is provided with the opening that can pass through for lever, described opening is provided with opposing parallel supporting frame along lever shaft direction, and described lever shaft is installed on supporting frame.
Further, described supporting frame is the base plate flanging upwards that base plate edge of opening is arranged.
Further, described supporting frame is the cuboid that middle part arranges the through hole that can pass for lever shaft, the bottom at described cuboid two ends is provided with groove, and on described base plate, corresponding position is provided with the erection column that can embed groove, and erection column and groove are bolted to connection.
Further, described push rod connector is connected with described lever by lever shaft, described lever shaft is provided with coupling, coupling obtains feedback voltage by the rotation of perception lever shaft, together with the peripheral control unit of described electric industrial push rod, moving forward and backward of control valve body axle, thus the ventilation controlling venturi control damper.
Further, the non-circular side of described coupling is along coupling axial left and right separated state, on the left and right side be separated, corresponding position is provided with screw, and described right flank is square, and the described screw corresponding with left surface is positioned on square side.
Further, described electric industrial push rod is also provided with spacing clip.
The beneficial effects of the utility model are, courage body is outwards movement under the effect of air-flow, courage spring in compression courage body, courage spring carries out shrinking or opening according to the size of pressure, thus ensure airspeed fast time internal diameter and courage body between cross section little, time airspeed is slow, cross section is large, namely courage body moves left and right under the effect of spring and air-flow, the air-flow passed through is made to be the air-flow of constant wind quantity, the utility model is by arranging supporting frame and improving coupling in addition, realize fixing in the static fixing and movement process of lever and lever shaft, spacing clip is set on push rod simultaneously, thus realize the accurate control of whole variable air flow venturi control damper, what avoid component in control procedure rocks the departure caused.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present utility model, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only an embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the general structure explosive view of the utility model embodiment 1;
Fig. 2 is the general structure explosive view of the utility model embodiment 2.
In figure: 1-valve body; 2-undergauge; 3-axostylus axostyle support; 4-valve body axle; 5-courage body; Courage body after 51-; Courage body before 52-; 53-courage body slide block; 54-courage spring; 55-bile duct; 6-control electronics; 61-electric industrial push rod; 62-push rod connector; 63-lever; 64-lever shaft; 65-coupling one; 65 ＇-coupling two; 66-driving plate; The spacing clip of 67-; 7-base plate; 71-supporting frame one; 71 ＇-supporting frame two; The upper hamper of 8-; Hamper under 9-; 10-S profile shaft bar latch; 11-adjusting axle sleeve pipe.
Embodiment
Below in conjunction with embodiment, the utility model is further described.Wherein, accompanying drawing only for exemplary illustration, expression be only schematic diagram, but not pictorial diagram, can not be interpreted as the restriction to this patent; In order to embodiment of the present utility model is described better, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; For a person skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Embodiment 1
As shown in Figure 1, a kind of variable air flow venturi of the utility model control damper, comprise valve body 1, be located at the undergauge 2 of described valve body 1 inner chamber, be located at two axostylus axostyle supports 3 at described valve body 1 two ends, be installed on the valve body axle 4 between described two axostylus axostyle supports 3, be located at the courage body 5 for matching with described undergauge on described valve body axle 4, described courage body 5 comprises apart from the nearer rear courage body 51 of described undergauge and courage body 52 before outside, valve body axle 4 between described rear courage body 51 and front courage body 52 is provided with courage body slide block 53 successively, courage spring 54 and bile duct 55, described courage spring 54 is located in described courage body slide block 53 and bile duct 55, described courage body slide block 53 connects rear courage body 51 and can slide on valve body axle 4 together with courage body 5, one end of described bile duct 55 is blocked by the axostylus axostyle support 5 be adjacent, the other end stretches in courage body 5, described front courage body 52 is located on described bile duct 55.
Further, described valve body 1 top is also provided with control electronics 6, described control electronics 6 is located on a base plate 7, control electronics 6 comprises electric industrial push rod 61, the push rod connector 62 be connected with described electric industrial push rod 61, the lever 63 that is connected with described push rod connector 62, and described lever 63 connects valve body axle 4 through the space being located at described valve body 1 top.
Further, described base plate is provided with the opening that can pass through for lever, described opening is provided with opposing parallel supporting frame 1 along lever shaft direction, described lever shaft is installed on supporting frame 1, this supporting frame is the base plate flanging upwards that base plate edge of opening is arranged, described flanging is provided with class U-shaped opening, described class U-shaped lower opening portion is the circular hole of diameter slightly larger than lever shaft diameter of section, and the width of upper opening is less than lever shaft diameter of section.
Further, described push rod connector 62 is connected with described lever 63 by lever shaft 64, described lever shaft 64 is provided with coupling 1, coupling 1 obtains feedback voltage by the rotation of perception lever shaft 64, together with the peripheral control unit of described electric industrial push rod 61, moving forward and backward of control valve body axle 4, thus control the ventilation of venturi control damper, simultaneously, electric industrial push rod is also provided with spacing clip 67, this spacing clip is made up of two semicircular ring, the two ends of annulus are provided with to be passed through, two semicircular ring can be connected into a complete annulus by bolt, by spacing as required with clip on the position required for electric industrial push rod, thus ensure the accuracy of electric industrial push rod stroke, thus improve control accuracy and the reliability of product on the whole.
Further, described control electronics is installed in a hamper, and described hamper comprises upper hamper 8 above described base plate 7 and base plate 7 and lower hamper 9, is also provided with the driving plate 66 for driving and control described electric industrial push rod 61 in described hamper.
Driving plate 66 is provided with dial-up key, can realize following five kinds of mode of operations by dial-up key.
Calibration mode: automatically accept calibrating installation order and carry out automatic calibration, can carry out nearly 51 automatic Calibrations.
Face wind speed pattern: when Fume hood Moving Window moves up and down, valve can provide the corresponding air quantity needed for the wind speed setting value of maintenance face in very short time, controls hood inlet opening surface mean wind velocity at 0.5 ± 0.1m/s.Above-mentioned whole process completes response within the time of 1 second.Can external emergency exhaust button, often open passive dry contact mode with DI and input, start maximum quantity of wind emergency exhaust pattern.
Voltage mode control: according to the Boiler pressure control signal (0 ~ 10VDC) carrying out self-controller, the valve opening of the air quantity corresponding to valve exports.Exportable real-time air quantity feedback signal (0 ~ 10VDC) is to controller simultaneously.
Boiler pressure control pattern: according to the communication signal carrying out self-controller, the valve opening of the air quantity corresponding to valve exports.Real-time airflow value can be provided to controller simultaneously.
Lingering remnants of past customs amount control mode: lingering remnants of past customs control valve carries out communication by communication modes and another volume control damper, reads its real-time airflow value; Through carrying out control algorithm with lingering remnants of past customs amount setting value, valve is made to export the aperture of corresponding air quantity.Lingering remnants of past customs amount setting value can be set by controller or upper-position unit.
Further, described lever 63 is connected with the penetration hole on valve body axle 4 by two S profile shaft bar latches 10, is provided with adjusting axle sleeve pipe 11 between described penetration hole and rear courage body 51.
Embodiment 2
As shown in Figure 2, with the difference of embodiment 1, this example is that supporting frame 1 is replaced by supporting frame 2 71 ＇, supporting frame 2 71 ＇ is the cuboid that middle part arranges the through hole that can pass for lever shaft, the bottom at described cuboid two ends is provided with groove, on described base plate, corresponding position is provided with the erection column that can embed groove, and erection column and groove are bolted to connection.
Difference is in addition to adopt coupling two to replace coupling one, square is arranged in one of them side of described coupling two, this square is provided with screw, the side corresponding with this side is provided with bolt position, coupling two can be connected into an entirety by bolt, square is arranged in side simultaneously, be conducive to the contact on nut and square surface, fixing more firm, thus realize the accurate control of whole control valve.
Except above-mentioned difference, other are all identical with embodiment 1.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a variable air flow venturi control damper, it is characterized in that, comprise valve body, be located at the undergauge of described body cavity, be located at two axostylus axostyle supports at described valve body two ends, be installed on the valve body axle between described two axostylus axostyle supports, be located at the courage body for matching with described undergauge on described valve body axle, described courage body comprises apart from the nearer rear courage body of described undergauge and courage body before outside, valve body axle between described rear courage body and front courage body is provided with courage body slide block successively, courage spring and bile duct, described courage spring is located in described courage body slide block and bile duct, described courage body slide block connects rear courage body and can slide on valve body axle together with courage body, one end of described bile duct is blocked by the axostylus axostyle support be adjacent, the other end stretches in courage body, described front courage body is located on described bile duct.
2. variable air flow venturi control damper according to claim 1, it is characterized in that, described valve body top is also provided with control electronics, described control electronics is located on a base plate, control electronics comprises electric industrial push rod, the push rod connector be connected with described electric industrial push rod, the lever that is connected with described push rod connector, described lever one end and push rod connector are hinged by lever shaft, and the other end is through base plate, valve body being connected with valve body axle.
3. variable air flow venturi control damper according to claim 2, it is characterized in that, described base plate is provided with the opening that can pass through for lever, described opening is provided with opposing parallel supporting frame along lever shaft direction, and described lever shaft is installed on supporting frame.
4. variable air flow venturi control damper according to claim 3, is characterized in that, described supporting frame is the base plate flanging upwards that base plate edge of opening is arranged.
5. variable air flow venturi control damper according to claim 3, it is characterized in that, described supporting frame is the cuboid that middle part arranges the through hole that can pass for lever shaft, the bottom at described cuboid two ends is provided with groove, on described base plate, corresponding position is provided with the erection column that can embed groove, and erection column and groove are bolted to connection.
6. the variable air flow venturi control damper according to any one of claim 2 ~ 5, it is characterized in that, described push rod connector is connected with described lever by lever shaft, described lever shaft is provided with coupling, coupling obtains feedback voltage by the rotation of perception lever shaft, together with peripheral control unit, moving forward and backward of control valve body axle.
7. variable air flow venturi control damper according to claim 6, it is characterized in that, the non-circular side of described coupling is along coupling axial left and right separated state, on the left and right side be separated, corresponding position is provided with screw, described right flank is square, and the described screw corresponding with left surface is positioned on square side.
8. variable air flow venturi control damper according to claim 7, is characterized in that, described electric industrial push rod is also provided with spacing clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520385834.9U CN205155280U (en) | 2015-06-04 | 2015-06-04 | Variable blast volume venturi pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520385834.9U CN205155280U (en) | 2015-06-04 | 2015-06-04 | Variable blast volume venturi pneumatic control valve |
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| Publication Number | Publication Date |
|---|---|
| CN205155280U true CN205155280U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520385834.9U Active CN205155280U (en) | 2015-06-04 | 2015-06-04 | Variable blast volume venturi pneumatic control valve |
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| CN (1) | CN205155280U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122549A (en) * | 2016-07-01 | 2016-11-16 | 珠海昊星自动化***有限公司 | A kind of venturi air-valve |
| CN108760409A (en) * | 2018-03-27 | 2018-11-06 | 重庆山楂树科技有限公司 | A kind of gas sampling assembly |
| CN113465149A (en) * | 2020-03-31 | 2021-10-01 | 霍尼韦尔国际公司 | System and method for characterizing Variable Air Volume (VAV) valves used in HVAC systems |
-
2015
- 2015-06-04 CN CN201520385834.9U patent/CN205155280U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122549A (en) * | 2016-07-01 | 2016-11-16 | 珠海昊星自动化***有限公司 | A kind of venturi air-valve |
| CN108760409A (en) * | 2018-03-27 | 2018-11-06 | 重庆山楂树科技有限公司 | A kind of gas sampling assembly |
| CN113465149A (en) * | 2020-03-31 | 2021-10-01 | 霍尼韦尔国际公司 | System and method for characterizing Variable Air Volume (VAV) valves used in HVAC systems |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |