CN218106453U

CN218106453U - Motor structure of negative pressure aspirator

Info

Publication number: CN218106453U
Application number: CN202220846338.9U
Authority: CN
Inventors: 张宏涛; 钱建民
Original assignee: Haize Clinical Research Institute Wuxi Co ltd
Current assignee: Haize Clinical Research Institute Wuxi Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-12-23
Anticipated expiration: 2032-04-13

Abstract

The utility model relates to a vacuum aspiration ware's motor structure, which comprises a motor, the pivot of motor is passed through the connecting axle and is linked to each other with the shaft coupling: a synchronous belt wheel is arranged on the connecting shaft; the synchronous belt wheel is simultaneously connected with an input shaft of the speed reducer; the output shaft of the speed reducer is connected with a potentiometer; the potentiometer is electrically connected with the controller; the coupler is connected with the mechanical valve and can regulate the negative pressure or/and the negative pressure flow under the driving of the motor. The utility model discloses can come out through synchronous pulley with the torque separation of motor output to combine with the potentiometre, realize the detection and the feedback control to the motor rotation situation, thereby, not only do not influence the control of motor to relevant adjusting valve, moreover, still can avoid detection device's error in the past, effectively improved the promptness and the accuracy nature of detection and control.

Description

Motor structure of negative pressure aspirator

Technical Field

The utility model relates to a medical appliance, in particular to a negative pressure aspirator, specifically to a motor structure of the negative pressure aspirator.

Background

A vacuum extractor is a medical instrument commonly used in surgical operations. When the device is used, the negative pressure and the flow rate can be timely and accurately adjusted by controlling the rotation of the motor. The conventional vacuum extractor mainly adopts a structure such as an encoder or a photoelectric switch and the like to detect the rotation of the motor, including whether the motor rotates, the rotating direction, whether the motor rotates according to a preset angle or number of turns and the like.

Currently, a common detection structure includes a rack and pinion. Wherein, the gear is connected with the output shaft of the motor, and the rack is arranged on the bottom plate and is meshed with the gear. Meanwhile, a linear encoder or a photoelectric switch is arranged on the side edge of the rack, so that the motor can drive the gear to rotate when rotating, then the rack is driven to move linearly, then the linear moving distance of the rack is detected through the linear encoder or the photoelectric switch, and finally the linear moving distance is converted into the rotating condition of the motor, and the rotation of the motor is detected.

However, since there is a mechanical gap between the rack and pinion, measurement errors are inevitably caused, and measurement accuracy is affected. Moreover, when employing photoelectric switches, at least three photoelectric switches are required, corresponding to the maximum position, the minimum position and the working position, respectively. Once the position of the photoelectric switch is fixed, it is often difficult to adjust, resulting in the motor being able to detect only a specified number of rotations. In the later period, the number of rotation turns or the detection range of the angle of the motor cannot be adjusted under the condition that the position of the photoelectric switch is not changed, and difficulty is brought to the installation and maintenance of the whole machine.

Therefore, improvements are needed to better meet the demands of production and use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art not enough, provide a vacuum aspiration ware's motor structure, can be timely accurate detect the rotation condition to the motor, moreover, do not receive the influence of mounted position, but the fully provided market demand.

The technical scheme of the utility model is that:

the utility model provides a motor structure of negative pressure aspirator, includes the motor, the pivot of motor passes through the connecting axle and links to each other with the shaft coupling: a synchronous belt wheel is arranged on the connecting shaft; the synchronous belt wheel is simultaneously connected with an input shaft of the speed reducer; the output shaft of the speed reducer is connected with a potentiometer; the potentiometer is electrically connected with the controller; the coupler is connected with the mechanical valve and can regulate the negative pressure or/and the negative pressure flow under the driving of the motor.

Further, a bearing is arranged on the input shaft of the speed reducer; the support is mounted in a bearing housing.

Furthermore, the bearing seat and the speed reducer are both arranged on the bottom plate.

Further, the mechanical valve is a negative pressure regulating valve or a flow regulating valve.

The utility model has the advantages that:

the utility model relates to a rationally, simple structure, convenient to use can separate out the torque of motor output through synchronous pulley to combine with the potentiometre, realize the detection and the feedback control to the motor rotation situation, thereby, not only do not influence the motor and to the control of relevant adjusting valve, moreover, still can avoid detection device's error in the past, effectively improved the promptness and the accuracy nature of detection and control.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, 1, the motor; 2-a connecting shaft; 3, coupling; 4-a mechanical valve; 5-a bottom plate; 6-synchronous pulley; 7-bearing seats; 8-a reducer; 9-a potentiometer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1.

A motor structure of a negative pressure suction apparatus comprises a motor 1, a synchronous belt wheel 6 and the like.

The rotating shaft of the motor 1 is connected with a coupler 3 through a connecting shaft 2, and then the coupler 3 is connected with a mechanical valve 4, so that the mechanical valve acts under the driving of the motor 1. The mechanical valve 4 can be a negative pressure regulating valve or a flow regulating valve, can regulate the negative pressure or/and the negative pressure flow, and meets the use requirement of negative pressure suction.

The synchronous pulley 6 is connected with the connecting shaft 2 and the input shaft of the speed reducer 8 at the same time. The output shaft of the speed reducer 8 is connected with a potentiometer 9 so as to separate the torque output by the motor 1, and the rotation information of the motor is obtained by detecting through the potentiometer 9. Meanwhile, the potentiometer is electrically connected with the controller, detected motor rotation information can be transmitted to the controller, and then the controller adjusts the motor to realize feedback control.

And a bearing is arranged on the input shaft of the speed reducer 8. The bearing is arranged in the bearing seat 7, so that the running stability of the speed reducer can be improved.

The motor 1, the bearing seat 7, the speed reducer 8, the potentiometer 9 and the like are all installed on the bottom plate 5, the speed reducer is parallel to the connecting shaft, the installation stability is guaranteed, and the installation and the maintenance are more convenient and faster.

Preferably, the potentiometer is VIB254F. The speed reducer can be a product with the model of 12gear box, the speed reduction ratio of the speed reducer is 10, so that the requirement that the number of rotation turns is more than one turn can be converted into less than one turn to be output to a potentiometer, and therefore, the multi-position quick setting and positioning can be realized within the range of less than 360 degrees.

The utility model discloses a synchronous pulley separates out the torque of motor output, and the rethread reduction gear after slowing down combines with the potentiometre, realizes the detection and the feedback control to the motor rotation situation to, not only do not influence the control of motor to relevant adjusting valve, moreover, still can avoid detection device's error in the past, effectively improved the promptness and the accuracy nature of detection and control.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides a motor structure of negative pressure aspirator, includes the motor, characterized by, the pivot of motor passes through the connecting axle and links to each other with the shaft coupling: a synchronous belt wheel is arranged on the connecting shaft; the synchronous belt wheel is simultaneously connected with an input shaft of the speed reducer; the output shaft of the speed reducer is connected with a potentiometer; the potentiometer is electrically connected with the controller; the coupler is connected with the mechanical valve and can adjust the negative pressure or/and the negative pressure flow under the driving of the motor.

2. The motor structure of the negative pressure suction apparatus as claimed in claim 1, wherein the input shaft of the speed reducer is provided with a bearing; the bearing is mounted in a bearing housing.

3. The motor structure of the vacuum extractor as claimed in claim 2, wherein the bearing seat and the reducer are mounted on the base plate.

4. The motor structure of the negative pressure aspirator according to claim 1, wherein the mechanical valve is a negative pressure regulating valve or a flow regulating valve.