CN217583373U - Valve structure of intelligent negative pressure equipment - Google Patents
Valve structure of intelligent negative pressure equipment Download PDFInfo
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- CN217583373U CN217583373U CN202221062304.7U CN202221062304U CN217583373U CN 217583373 U CN217583373 U CN 217583373U CN 202221062304 U CN202221062304 U CN 202221062304U CN 217583373 U CN217583373 U CN 217583373U
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Abstract
The utility model relates to a valve structure of intelligent negative pressure equipment, which comprises a rotary valve and an opening detection device, wherein the adjusting end of the valve is connected with the output shaft of a motor; the opening degree detection device comprises a resistance disc and a rotor; the resistance disc is provided with a plurality of detection resistors with different resistance values, the detection resistors are sequentially arranged in an arc shape, and the center of the resistance disc is provided with a through hole; the far ends of the detection resistors are connected in parallel and then connected with a logic power supply, and the near ends of the detection resistors are vacant; the rotor is fixed on an output shaft of the motor; the rotor is provided with a rotating slip sheet which can be electrically connected with the near ends of different detection resistors along with the rotation of the output shaft; the rotating slip sheet is also electrically grounded; the conductive loop is electrically connected to the controller. The utility model discloses can turn into the signal of telecommunication output in the conductive loop who comprises different resistance detection resistance with the motor corner information of control flap aperture, make valve control more accurate and high-efficient, fully provided modern medical equipment's user demand.
Description
Technical Field
The utility model relates to a medical instrument component, especially a valve member, specific valve structure of intelligence negative pressure equipment that says so.
Background
At present, on medical equipment such as intelligence negative pressure suction equipment and anesthesia machine, the valve is controlled through changing cross sectional area size to the universal adoption, realizes the accurate regulation to fluid flow such as negative pressure gas or liquid. Therefore, the position at which the valve opening is accurately obtained directly affects the efficiency and accuracy of the control.
At present, the position of the valve is mainly judged by a grating or Hall sensing counting mode and the like. However, such a method has the following problems:
1. when the grating is adopted, the valve is easy to shake or slip when rotating, so that data acquisition is repeatedly accumulated, great influence is generated on control precision, and even the driving motor is damaged.
2. When the Hall sensing mode is adopted, the annular magnet cannot be used for more accurate detection due to the limitation of the annular magnet. In addition, because the hall element has a certain distance range to the induction of the magnetic pole, a certain induction error exists, and the measurement accuracy is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art not enough, provide an intelligence negative pressure equipment's valve structure, can effectively improve the judgement precision of valve aperture position, the fully provided user demand.
The technical scheme of the utility model is that:
a valve structure of intelligent negative pressure equipment comprises a rotary valve and an opening detection device, wherein an adjusting end of the valve is connected with an output shaft of a motor, and the opening of the valve can be adjusted through the rotation of the motor; the opening degree detection device comprises a resistance disc and a rotor; the resistance disc is provided with a plurality of detection resistors with different resistance values, and the detection resistors are sequentially arranged in an arc shape; the center of the resistance disc is provided with a through hole, so that the output shaft of the motor can penetrate through the through hole; the far ends of the detection resistors are connected in parallel and then electrically connected with the logic power supply, and the near ends of the detection resistors are vacant; the rotor is fixed on an output shaft of the motor; the rotor is provided with a rotating slip sheet which can be electrically connected with the near ends of different detection resistors along with the rotation of the output shaft; the rotating sliding sheet is also electrically grounded and forms a conductive loop with the logic power supply and the detection resistor; the conductive loop is electrically connected with the controller, and can lead out and convert the current or/and voltage information in the conductive loop into the information of the valve opening degree.
Furthermore, the rotor is cylindrical and is tightly sleeved on an output shaft of the motor and can synchronously rotate with the output shaft; the rotary sliding sheet is in a thin rod shape, one end of the rotary sliding sheet is fixedly connected with the rotor, and the other end of the rotary sliding sheet is movably connected with the near end of the detection resistor; the rotor and the rotating sliding sheet are both made of metal materials; the device also comprises a fixed sliding sheet; the fixed sliding sheet is made of metal material, is arranged on the resistance disc and is tightly contacted with the rotor; the fixed slide is electrically connected with the conductive loop.
Further, the arc angle formed by the detection resistor is 90-300 degrees.
Further, the device also comprises a connector; the connector is mounted on the resistor disc and is applied to the connection of the conductive loop.
Further, the device also comprises a reference resistor which is connected between the fixed slide sheet and the electric ground; the end part of the reference resistor is electrically connected with the controller
Further, an ADC conversion unit is provided in the controller.
The utility model has the advantages that:
the utility model relates to a rationally, simple structure, convenient to use can turn into the signal of telecommunication output in the conductive loop who comprises different resistance detection resistance with the motor corner information of control flap aperture to alright with the aperture information of accurate acquisition valve, and the feedback control valve aperture, make the control of valve high-efficient and accurate more, fully satisfied modern intelligent medical equipment's user demand.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the conductive loop of the present invention.
Wherein, 1, a motor; 2-an output shaft; 3-detecting the resistance; 4-a resistance disc; 5-a valve; 6-rotating the sliding sheet; 7-fixed sliding sheet; 8-a connector; 9-a rotor; 10-reference sense resistance.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2.
A valve structure of intelligent negative pressure equipment comprises a rotary valve 5 and an opening detection device.
The adjusting end of the valve 5 is connected with the output shaft 2 of the motor 1, and the opening degree of the valve can be adjusted through the rotation of the motor. The inlet and outlet of the valve 5 are respectively communicated with the related pipelines to form a gas or liquid transmission channel and adjust the flow in the pipelines.
The opening degree detection device includes a resistance disc 4 and a rotor 9. The resistance disc 4 is in an L-shaped thin plate shape, and a plurality of detection resistors 3 with different resistance values are arranged on the resistance disc. The detection resistors 3 are sequentially arranged in an arc shape, a through hole is formed in the center of the detection resistors, the output shaft 2 of the motor 1 penetrates through the through hole, and the resistance disc 4 is arranged between the motor 1 and the valve 5. The far ends of the detection resistors 3 are connected in parallel and then connected with a logic power supply, and the near ends are vacant and close to the through holes. The rotor 9 is cylindrical and is firmly sleeved on the output shaft 2 of the motor and can synchronously rotate with the output shaft 2.
And also comprises a rotating slide 6 and a fixed slide 7. The rotary sliding sheet 6 is in a thin rod shape, one end of the rotary sliding sheet is fixedly connected with the rotor 9, and the other end of the rotary sliding sheet is movably lapped at the near end of the detection resistor 3. When the motor 1 works, the rotating slide sheet can be lapped with the near ends of different detection resistors 3 along with the rotation of the rotor 9. The fixed sliding sheet 7 is in a block shape, is arranged on the resistance disc 4 and is tightly contacted with the rotor 9. The rotor 9, the rotating slide sheet 6 and the fixed slide sheet 7 are all made of metal materials and can conduct electricity.
The fixed sliding sheet 7 is electrically connected with a connector 8 through a lead. The connector 8 is mounted on the resistor disc 4, but may be mounted in other positions. The connector 8 is provided with a reference resistor 10, so that the fixed sliding sheet 7 is electrically grounded after passing through the reference resistor 10, and forms a corresponding conductive loop with each detection resistor 3.
The end of the reference resistor 10 is also electrically connected to a controller, and can transmit electronic information such as voltage or/and current on the reference resistor 10 to the controller. And an ADC (analog to digital converter) is arranged in the controller and can convert the electronic information into a digital signal corresponding to the angle information, so that the information of the opening degree of the valve is obtained. Then, the valve opening information can be output to a related display device for display in an RS485 mode, or simultaneously transmitted to the control module. The control module can adjust the rotation of the motor after comparing the set parameters with the opening information, thereby realizing automatic feedback control.
The ADC converter can be selected from products such as AD 9209. The control module can be STM32 series chips and other products. The detection resistor can be a patch resistor, the number of the detection resistors can be adjusted according to the use requirement and the size of the resistor disc, and the angle of the formed arc is 90-300 degrees, so that different use requirements are met.
The utility model discloses can turn into the signal of telecommunication output in the conductive loop who comprises different resistance detection resistance with the motor corner information of control flap aperture, make valve control more accurate and high-efficient, fully provided modern medical equipment's such as intelligent negative pressure suction equipment or anesthesia machine user demand.
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 (6)
1. A valve structure of intelligent negative pressure equipment comprises a rotary valve and an opening detection device, and is characterized in that an adjusting end of the valve is connected with an output shaft of a motor, and the opening of the valve can be adjusted through the rotation of the motor; the opening degree detection device comprises a resistance disc and a rotor; the resistance disc is provided with a plurality of detection resistors with different resistance values, and the detection resistors are sequentially arranged in an arc shape; the center of the resistance disc is provided with a through hole, so that the output shaft of the motor can penetrate through the through hole; the far ends of the detection resistors are connected in parallel and then electrically connected with the logic power supply, and the near ends of the detection resistors are vacant; the rotor is fixed on an output shaft of the motor; the rotor is provided with a rotating slip sheet which can be electrically connected with the near ends of different detection resistors along with the rotation of the output shaft; the rotating sliding sheet is also electrically grounded and forms a conductive loop with the logic power supply and the detection resistor; the conductive loop is electrically connected with the controller, and can lead out and convert the current or/and voltage information in the conductive loop into the information of the valve opening degree.
2. The valve structure of intelligent negative pressure equipment as claimed in claim 1, wherein the rotor is cylindrical, is tightly sleeved on the output shaft of the motor, and can synchronously rotate with the output shaft; the rotary sliding sheet is in a thin rod shape, one end of the rotary sliding sheet is fixedly connected with the rotor, and the other end of the rotary sliding sheet is movably connected with the near end of the detection resistor; the rotor and the rotating sliding sheet are both made of metal materials; the device also comprises a fixed sliding sheet; the fixed sliding sheet is made of metal material, is arranged on the resistance disc and is tightly contacted with the rotor; the fixed slide is electrically connected with the conductive loop.
3. The valve structure of intelligent negative pressure equipment as claimed in claim 1, wherein the arc angle formed by the detection resistor is 90-300 °.
4. The valve structure of intelligent negative pressure equipment as claimed in claim 1, further comprising a connector; the connector is mounted on the resistor disc and is applied to the connection of the conductive loop.
5. The valve structure of intelligent negative pressure equipment, as recited in claim 2, further comprising a reference resistor connected between said fixed slide and the electrical ground; the end of the reference resistor is electrically connected to the controller.
6. The valve structure of intelligent negative pressure equipment as claimed in claim 1, wherein an ADC conversion unit is arranged in the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221062304.7U CN217583373U (en) | 2022-05-06 | 2022-05-06 | Valve structure of intelligent negative pressure equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221062304.7U CN217583373U (en) | 2022-05-06 | 2022-05-06 | Valve structure of intelligent negative pressure equipment |
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| Publication Number | Publication Date |
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| CN217583373U true CN217583373U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221062304.7U Active CN217583373U (en) | 2022-05-06 | 2022-05-06 | Valve structure of intelligent negative pressure equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115638721A (en) * | 2022-12-23 | 2023-01-24 | 荣耀终端有限公司 | Corner detection device, rotating device and electronic equipment |
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2022
- 2022-05-06 CN CN202221062304.7U patent/CN217583373U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115638721A (en) * | 2022-12-23 | 2023-01-24 | 荣耀终端有限公司 | Corner detection device, rotating device and electronic equipment |
| CN115638721B (en) * | 2022-12-23 | 2023-08-22 | 荣耀终端有限公司 | Corner detection device, rotating device and electronic equipment |
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