CN212297647U

CN212297647U - Quick air door actuator

Info

Publication number: CN212297647U
Application number: CN202020945066.9U
Authority: CN
Inventors: 叶华丰; 何仁华
Original assignee: Shenzhen Muren Intelligent Laboratory Technology Co ltd
Current assignee: Shenzhen Muren Intelligent Laboratory Technology Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-01-05
Anticipated expiration: 2030-05-29

Abstract

A quick air door actuator comprises a cylindrical valve body and a rotatable air door arranged in the valve body; the top of the valve body is provided with an actuator for driving the air door to rotate, and the actuator comprises a fixed shell, a synchronizing wheel, a bearing and a stepping motor; the air quantity control system has the technical key points that the air door can stay at any position to be stayed by utilizing the operation advantages of the stepping motor and effectively controlling the opening degree of the air door through controlling pulse output, and the accurate air quantity regulation is achieved by setting the accurate step counting control output of the stepping motor, so that the air quantity distribution of a ventilation cabinet (biological safety cabinet) according to needs is effectively improved to meet the requirement of energy conservation; the requirement of speed improvement is achieved through the change of the transmission mode, the rapid reaction of the air door in the fume hood (biological safety cabinet) can meet the requirement of air volume speed increase required by the fume hood (biological safety cabinet), the blocking performance of the fume hood (biological safety cabinet) is improved, and the probability of chemical or biological injury to operators is reduced.

Description

Quick air door actuator

Technical Field

The utility model belongs to the technical field of ventilation equipment, specifically a quick air door executor.

Background

The rotational speed and the accuracy of an actuator arranged on a traditional exhaust air door of a ventilation cabinet (a biological safety cabinet) can not meet the requirements of safety control, on the basis of energy conservation, the traditional actuator can only realize the functions of full closing and full opening, the air quantity required by the fume hood (biological safety cabinet) is different when the opening heights are different, the traditional air door actuator is in the full opening state or the full closing state, but most laboratories have more fume hoods, the opening height of the fume hood door is only 60% of the full opening height (less than 5% of all the using time except the opportunity point of opening to 100% full opening when a large instrument is placed) when the fume hood is normally used, and the opening degree of the fume hood which is not operated by people when the fume hood is used is in the full closing state, the air exhaust only needs to maintain the wind speed of the opening of the fume hood (the national standard of the fume hood wind speed is 0.5m/s), and the traditional actuator can not distribute the air volume according to the requirement; the operation speed of the existing (domestic) actuator at 0-90 degrees can only reach 3S, the operation speed of the imported actuator at 0-90 degrees can only reach 2S, and the structure of the actuator generally adopts a motor with smaller torque to enlarge the torque through a plurality of layers of gears, so the operation speed can not reach the level below 1S.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a quick air door executor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a quick air door actuator comprises a cylindrical valve body and a rotatable air door arranged in the valve body;

the top of valve body is installed and is used for driving air door pivoted executor, and this executor includes set casing, synchronizing wheel, bearing and step motor, the executor is connected through setting up the wire with external controller.

Preferably, the air door is discoid structure, and the upper and lower both ends of air door all are connected with the valve body through setting up the air door jackscrew.

Preferably, the synchronizing wheel is arranged in the fixed shell, the bearing and the stepping motor are both arranged on the upper surface of the fixed shell, a shaft rod is welded at the top end of the air door, and the shaft rod penetrates through the synchronizing wheel and the bearing in sequence.

Preferably, a gear is welded at one end of an output shaft matched with the stepping motor, which extends into the fixed shell, the gear and the synchronizing wheel are positioned on the same plane, and the gear and the synchronizing wheel are connected in a synchronous belt transmission manner.

Preferably, the bearing is fixed on the upper surface of the fixed shell through four groups of screws, and the fixed shell is connected with the valve body through a bottom shell.

Preferably, blocking pieces with C-shaped cross sections are welded on the two sides of the air door on the inner wall of the valve body in a closed state, and electromagnetic chucks are arranged at the positions where the surfaces of the blocking pieces are attached to the air door.

Compared with the prior art, the utility model provides a quick air door executor has following beneficial effect:

firstly, the angle is accurately controlled, the air door opening is effectively controlled by controlling the pulse output by utilizing the operation advantages of the stepping motor, so that the air door can stay at any position where the air door is required to stay, the accurate step counting control output of the stepping motor is set, the accurate air volume adjustment is achieved, and the requirement of energy conservation by distributing the air volume of a ventilation cabinet (biological safety cabinet) according to needs is effectively improved;

secondly, the requirement of speed improvement is met by changing the transmission mode, the rapid response of the air door in the fume hood (biological safety cabinet) can meet the requirement of increasing the air quantity speed required by the fume hood (biological safety cabinet), the blocking performance of the fume hood (biological safety cabinet) is improved, and the probability of chemical or biological injury to operators is reduced.

And thirdly, two groups of blocking parts with electromagnetic chucks are adopted, when the whole actuator is not used, the electromagnetic chucks can be opened to ensure that the air door is attached to one side of the two groups of blocking parts in the opposite direction, the air door is ensured to realize the closing operation of a channel in the valve body, and the stability of the position of the air door in the valve body is further ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the synchronizing wheel of the present invention;

FIG. 4 is a schematic view of a partial structure of the inner wall of the valve body according to the present invention;

fig. 5 is a schematic view of the stopper structure of the present invention.

Reference numerals: 1. a valve body; 2. a damper; 3. a bottom case; 4. a stationary case; 5. a stepping motor; 6. a bearing; 7. a synchronizing wheel; 8. jacking a screw of the air door; 9. a stopper.

Detailed Description

The following describes a specific embodiment of the quick damper actuator according to the present invention with reference to fig. 1. The utility model relates to a quick air door executor is not limited to the description of following embodiment.

The embodiment provides a specific structure of a quick air door actuator, and as shown in fig. 1-5, the quick air door actuator comprises a cylindrical valve body 1 and a rotatable air door 2 arranged in the valve body 1;

the top of the valve body 1 is provided with an actuator for driving the air door 2 to rotate, the actuator comprises a fixed shell 4, a synchronizing wheel 7, a bearing 6 and a stepping motor 5, and the actuator is connected with an external controller through a lead.

Specifically, the external controller is controlled by a self-programming program, and a chip with the type of a CPU226 is embedded in the controller, so that the controller can be selectively controlled or automatically controlled according to a designed program.

Specifically, the utility model discloses mainly used fume chamber, biohazard safety equipment etc. need ventilation system need change the air door actuating mechanism of the amount of wind fast.

As shown in fig. 1 and 2, the damper 2 is a disc-shaped structure, and the upper end and the lower end of the damper 2 are both connected with the valve body 1 through the arrangement of a damper jackscrew 8.

As shown in fig. 2 and 3, the synchronizing wheel 7 is disposed in the fixed casing 4, the bearing 6 and the stepping motor 5 are both mounted on the upper surface of the fixed casing 4, a shaft rod is welded to the top end of the damper 2, and the shaft rod sequentially penetrates through the synchronizing wheel 7 and the bearing 6.

Can utilize step motor 5's operation advantage to the accurate control of angle, through 2 apertures of the effectual control air door of control pulse output, make it can stop in any position that want to stop, through the accurate meter step control output that sets up step motor 5, reach accurate air regulation, effectively improve fume chamber (biological safety cabinet) and distribute the amount of wind as required and reach energy-conserving needs.

As shown in fig. 2 and 3, a gear is welded at one end of the stepping motor 5, which extends into the stationary casing 4, and the gear and the synchronizing wheel 7 are located on the same plane, and the gear and the synchronizing wheel 7 are connected by a synchronous belt.

The department reaches the needs that speed improves through the change of transmission mode, and the quick response of air door 2 can reach the required demand that increases amount of wind speed of fume chamber (biological safety cabinet) in fume chamber (biological safety cabinet), improves the enclosure performance of fume chamber (biological safety cabinet), reduces operating personnel and receives chemistry or biological injury probability.

Particularly, can be often quick open and close in the use of fume chamber (biological safety cabinet) door through a large amount of experiments prove, at this in-process, need the fast reaction of air door 2 to reach the speed that fume chamber (biological safety cabinet) required increase amount of wind to improve the enclosuring nature when fume chamber (biological safety cabinet), and then ensure laboratory staff's safety.

As shown in fig. 1, the bearing 6 is fixed on the upper surface of the fixed shell 4 by four sets of screws, and the fixed shell 4 is connected with the valve body 1 by the bottom shell 3.

As shown in fig. 4 and 5, stoppers 9 with C-shaped cross sections are welded on the inner wall of the valve body 1 at both sides of the damper 2 in a closed state, and an electromagnetic chuck is arranged at the position where the surface of the stopper 9 is attached to the damper 2;

specifically, the surfaces of the opposite sides of the stoppers 9 are on the same horizontal plane;

the two groups of blocking pieces 9 with the electromagnetic chucks are adopted, when the whole actuator is not used, the electromagnetic chucks can be opened to ensure that the air door 2 is attached to one side of the two groups of blocking pieces 9 in the opposite direction, the air door 2 is ensured to realize the closing operation of a channel in the valve body 1, and the stability of the position of the air door 2 in the valve body 1 is further ensured.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A quick damper actuator, comprising: comprises a cylindrical valve body (1) and a rotatable air door (2) arranged in the valve body (1);

the top of valve body (1) is installed and is used for driving air door (2) pivoted executor, and this executor includes set casing (4), synchronizing wheel (7), bearing (6) and step motor (5), the executor is connected through setting up the wire with external controller.

2. A rapid damper actuator as recited in claim 1, wherein: the air door (2) is of a disc-shaped structure, and the upper end and the lower end of the air door (2) are connected with the valve body (1) through the air door jackscrew (8).

3. A rapid damper actuator as recited in claim 1, wherein: synchronizing wheel (7) set up in set casing (4), bearing (6) and step motor (5) are all installed in the upper surface of set casing (4), the top welding of air door (2) has the axostylus axostyle, and this axostylus axostyle runs through in proper order through synchronizing wheel (7) and bearing (6).

4. A rapid damper actuator as recited in claim 1, wherein: one end of the output shaft matched with the stepping motor (5) and extending into the fixed shell (4) is welded with a gear, the gear and the synchronizing wheel (7) are located on the same plane, and the gear and the synchronizing wheel (7) are connected through a synchronous belt in a transmission mode.

5. A rapid damper actuator as recited in claim 1, wherein: the bearing (6) is fixed on the upper surface of the fixed shell (4) through four groups of screws, and the fixed shell (4) is connected with the valve body (1) through the bottom shell (3).

6. A rapid damper actuator as recited in claim 1, wherein: blocking pieces (9) with C-shaped cross sections are welded on the two sides of the air door (2) in a closed state on the inner wall of the valve body (1), and electromagnetic chucks are arranged at the positions where the surfaces of the blocking pieces (9) are attached to the air door (2).