CN210044552U - Adjustable negative pressure air source - Google Patents
Adjustable negative pressure air source Download PDFInfo
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- CN210044552U CN210044552U CN201920642261.1U CN201920642261U CN210044552U CN 210044552 U CN210044552 U CN 210044552U CN 201920642261 U CN201920642261 U CN 201920642261U CN 210044552 U CN210044552 U CN 210044552U
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Abstract
The utility model provides an adjustable negative pressure air source, which belongs to the field of oxygen machines and comprises a shell, wherein a negative pressure pump, a solenoid valve A and a proportional solenoid valve are arranged in the shell, the air exhaust end of the negative pressure pump is communicated to one end of an air exhaust port on the shell through the solenoid valve A, the air exhaust port is connected to the other end of the air exhaust port, a square operating handle hung on the shell is arranged on a pipeline between the air exhaust port and the air exhaust port, a full-force air exhaust button, an adjustable air exhaust button and an adjusting knob are arranged on the operating handle, the wiring ends of the air exhaust button and the adjustable air exhaust button are connected to a control device, and the adjusting knob; the exhaust end of the negative pressure pump is communicated with one end of a waste discharge port on the shell, and the other end of the waste discharge port is communicated with a waste discharge port; the shell is also provided with an adjusting air port which is communicated to the air suction end of the negative pressure pump through a proportional solenoid valve, and the control end of the proportional solenoid valve is connected to the control device. The utility model discloses can adjust the atmospheric pressure intensity of bleeding as required.
Description
Technical Field
The utility model provides an adjustable negative pressure air supply belongs to the oxygen machine field.
Background
Negative pressure equipment is used for the work of decontaminating of patient's wound in hospital, and staff uses the suction gun of negative pressure equipment can draw away the thick, blood and the particulate matter that oozes on the wound. When open-air first aid or battlefield first aid, medical personnel also can hand-carry miniature negative pressure air supply in order to operate at the scene, rinses the wound for patient, but miniature negative pressure air supply structure is all fairly simple, directly provides the negative pressure by small-size negative pressure pump, does not have the buffer tank to cushion, and the atmospheric pressure of just bleeding is fixed. However, some wounds expose nerves or arteries, and in such a case, suction cannot be performed under a large negative pressure, while cleaning of skin and muscles requires a relatively high negative pressure for debridement, otherwise the debridement is not clean. Therefore, the existing portable negative pressure air extraction device cannot realize the negative pressure air extraction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adjustable negative pressure air supply can adjust the atmospheric pressure intensity of bleeding as required.
The utility model discloses an adjustable negative pressure air source, which comprises a housing, be equipped with negative pressure pump, solenoid valve A and proportional solenoid valve in the shell, negative pressure pump's the end of bleeding communicates the port one end of bleeding on the shell through solenoid valve A, the extraction opening is connected to the other end of port of bleeding through the hose, be equipped with the operating handle on the pipeline between extraction opening and the port of bleeding, the operating handle is square, and hang on the shell, the operating handle sets up full power bleed button, adjustable bleed button and adjust knob, bleed button, the wiring end of adjustable bleed button is connected to controlling means, adjust knob is the adjust knob of variable resistance in the controlling means; the exhaust end of the negative pressure pump is communicated to one end of a waste discharge port on the shell, and the other end of the waste discharge port is communicated to a waste discharge port through a hose; the shell is also provided with an adjusting air port which is communicated to the air suction end of the negative pressure pump through a proportional electromagnetic valve, the control end of the proportional electromagnetic valve is connected to the control device, and the exhaust end of the negative pressure pump is connected to the waste discharge port.
Furthermore, the control device comprises a relay A, a relay B and a diode, one end of a coil of the relay A is connected to the positive pole of the power supply through a full-power air extraction button, and the other end of the coil of the relay A is connected to the negative pole of the power supply; a coil of the electromagnetic valve A and a power supply end of the negative pressure pump are respectively connected to a power supply through two normally open contacts of the relay A;
adjustable bleed button one end is connected to the power anodal, the other end is connected to the positive pole of diode and relay B's coil one end respectively, the negative pole of diode is connected to on the circuit between full power bleed switch and relay A's the coil, relay B's the coil other end is connected to the power negative pole, relay B's normally open contact one end is connected to the power anodal, relay B's the normally open contact other end is connected to the power negative pole through proportion solenoid valve power end, two power ends of variable resistance are connected to the power end, variable resistance's regulation end is connected to the regulation end of proportion solenoid valve.
Compared with the prior art, the utility model beneficial effect does:
the adjustable negative pressure air source of the utility model is the same as the existing portable negative pressure air extractor in structure, two starting buttons are arranged, and the negative pressure pump can extract air at full power by pressing the full-power air extraction button, so that the air extraction port can obtain the strongest negative pressure; when the air suction pressure at the air suction opening is required to be adjusted, the air suction button can be adjusted, the knob is adjusted firstly, the opening degree of the proportional solenoid valve is adjusted, the negative pressure of the air suction opening is changed, the adjustment of the negative pressure is realized, and various wounds can be debrided by using the negative pressures with different pressures.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an electrical schematic diagram of the present invention;
fig. 3 is a circuit diagram of the control device.
In the figure: 1. a housing; 2. an air extraction opening; 3. an operating handle; 4. a waste discharge port; 5. adjusting the air ports; 6. a diode; 7. a control device; 8. a negative pressure pump; 9. a proportional solenoid valve; 10. an electromagnetic valve A; 11. a full force air extraction button; 12. an adjustable pumping button; 13. a relay A; 14. a variable resistor; 15. and a relay B.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-3, the adjustable negative pressure air source of the present invention comprises a housing 1, a negative pressure pump 8, a solenoid valve a10 and a proportional solenoid valve 9 are arranged in the housing 1, an air exhaust end of the negative pressure pump 8 is communicated to one end of an air exhaust port on the housing 1 through a solenoid valve a10, an air exhaust port 2 is connected to the other end of the air exhaust port through a hose, an operation handle 3 is arranged on a pipeline between the air exhaust port 2 and the air exhaust port, the operation handle 3 is square and is hung on the housing 1, a full-force air exhaust button 11, an adjustable air exhaust button 12 and an adjusting knob are arranged on the operation handle 3, a wiring end of the air exhaust button and the adjustable air exhaust button 12 are connected to a control device 7, and the adjusting knob is an adjusting knob; the exhaust end of the negative pressure pump 8 is communicated with one end of a waste discharge port on the shell 1, and the other end of the waste discharge port is communicated with the waste discharge port 4 through a hose; the shell 1 is also provided with an adjusting air port 5, the adjusting air port 5 is communicated to the air suction end of the negative pressure pump 8 through a proportional electromagnetic valve 9, the control end of the proportional electromagnetic valve 9 is connected to the control device 7, and the exhaust end of the negative pressure pump 8 is connected to the waste discharge port 4.
When in use, the operating handle 3 is taken down from the shell 1, if the skin or muscle is determined to be debrided, the full-power air extraction button 11 is directly pressed to extract the air from the air extraction port 2, and then the full-power negative pressure air extraction is carried out. If the delicate part is debrided, similar to a blood vessel or a nerve, the adjustable air exhaust button 12 is pressed to exhaust air without debridement, then the adjusting knob is rotated to change the resistance of the variable resistor 14, so as to adjust the voltage intensity of the signal output to the proportional solenoid valve 9, the change of the voltage intensity is the change of an analog signal, the proportional solenoid valve 9 has different opening degrees when receiving signals with different intensities, the proportional solenoid valve 9 is installed on the adjusting air port 5, the flow of the adjusting air port 5 is different when the proportional solenoid valve 9 has different opening degrees, a worker can rotate the adjusting knob according to the air exhaust pressure until the worker feels that the air exhaust pressure meets the requirement, then debridement operation is performed, and the textbook does not have a definite negative pressure debridement value to correspond to each organ or part, so that the strength of the negative pressure of the air exhaust is generally judged by the experience of a surgeon and the specific conditions of the wound, due to the fact that human factors are greatly different between judgment and operation of an operating doctor, the adjustable interval is designed for the operating doctor to use. Example (c): the resistance increase of variable resistance 14, the 14 partial pressures of variable resistance increase, the voltage that proportional solenoid valve 9 received will be signal strength promptly and will diminish, proportional solenoid valve 9's aperture will diminish, adjust the flow of gas port 5 and will reduce, because negative pressure pump 8 power is certain, the pipe diameter of connecting extraction opening 2 and the pipeline of adjusting gas port 5 is unchangeable, its air pressure of bleeding is also a quota, when adjusting the air flow of bleeding of gas port 5 and reducing, then the flow of bleeding of extraction opening 2 becomes, the flow of bleeding becomes great, the pipe diameter is unchangeable, then the pressure of bleeding becomes great. The steam extraction flow of the extraction opening 2 is reduced by utilizing the flow dividing principle, and the flow of the extraction opening 2 is adjusted by changing the flow of the adjusting air opening 5, so that the purpose of adjusting the air extraction pressure is realized.
The control device 7 comprises a relay A13, a relay B15 and a diode 6, one end of a coil of the relay A13 is connected to the positive pole of a power supply through a full-power air suction button 11, and the other end of the coil of the relay A13 is connected to the negative pole of the power supply; the coil of the electromagnetic valve A10 and the power supply end of the negative pressure pump 8 are respectively connected to a power supply through two normally open contacts of a relay A13;
adjustable bleed button 12 one end is connected to the power anodal, the other end is connected to diode 6's positive pole and relay B15's coil one end respectively, diode 6's negative pole is connected to on the circuit between full power bleed switch and relay A13's the coil, relay B15's the coil other end is connected to the power negative pole, relay B15's normally open contact one end is connected to the power anodal, relay B15's the normally open contact other end is connected to the power negative pole through proportion solenoid valve 9 power end, two power ends of variable resistor 14 are connected to the power end, the regulation end of variable resistor 14 is connected to the regulation end of proportion solenoid valve 9.
When the staff pressed the full-power air extraction button 11, the coil of relay A13 got electricity, and the normally open contact of relay A13 was closed, and solenoid valve A10 got electricity and switched on, made the gas circuit between aspiration pump and extraction opening 2 switch on, and the aspiration pump starts work simultaneously, and extraction opening 2 produces the negative pressure and can carry out debridement work.
When the staff need adjust the atmospheric pressure intensity of bleeding, press adjustable bleed button 12, diode 6 positive pole switches on to the negative pole, relay A13 and relay B15's coil all circular telegram, relay A13 and relay B15's normally open contact are closed, solenoid valve A10 gets electricity and switches on, make extraction opening 2 gas circuit switch on, negative pressure pump 8 gets electricity start work simultaneously, proportion solenoid valve 9 gets electricity simultaneously again and opens the route of adjusting gas port 5 and negative pressure pump 8, adjust resistance, thereby adjust proportion solenoid valve 9 aperture, adjust the extraction pressure of extraction opening 2 with this.
Claims (2)
1. An adjustable negative pressure air source comprises a shell (1), wherein a negative pressure pump (8), an electromagnetic valve A (10) and a proportional electromagnetic valve (9) are arranged in the shell (1), and an air exhaust end of the negative pressure pump (8) is communicated to one end of an air exhaust port on the shell (1) through the electromagnetic valve A (10), and is characterized in that an air exhaust port (2) is connected to the other end of the air exhaust port through a hose, an operating handle (3) is arranged on a pipeline between the air exhaust port (2) and the air exhaust port, the operating handle (3) is square and is hung on the shell (1), a full-force air exhaust button (11), an adjustable air exhaust button (12) and an adjusting knob are arranged on the operating handle (3), the air exhaust button and a wiring terminal of the adjustable air exhaust button (12) are connected to a control device (7), and the adjusting knob is an adjusting knob of a variable resistor (14); the exhaust end of the negative pressure pump (8) is communicated with one end of a waste discharge port on the shell (1), and the other end of the waste discharge port is communicated with the waste discharge port (4) through a hose; the shell (1) is also provided with an adjusting air port (5), the adjusting air port (5) is communicated to the air suction end of the negative pressure pump (8) through a proportional solenoid valve (9), the control end of the proportional solenoid valve (9) is connected to a control device (7), and the exhaust end of the negative pressure pump (8) is connected to a waste discharge port (4).
2. The adjustable negative pressure air source according to claim 1, wherein the control device (7) comprises a relay A (13), a relay B (15) and a diode (6), one end of a coil of the relay A (13) is connected to the positive pole of the power supply through the full-power pumping button (11), and the other end of the coil of the relay A (13) is connected to the negative pole of the power supply; a coil of the electromagnetic valve A (10) and a power supply end of the negative pressure pump (8) are respectively connected to a power supply through two normally open contacts of the relay A (13);
adjustable bleed button (12) one end is connected to the power anodal, the other end is connected to the positive pole of diode (6) and the coil one end of relay B (15) respectively, the negative pole of diode (6) is connected to on the circuit between the coil of full power bleed switch and relay A (13), the coil other end of relay B (15) is connected to the power negative pole, the normally open contact one end of relay B (15) is connected to the power anodal, the normally open contact other end of relay B (15) is connected to the power negative pole through proportion solenoid valve (9) power end, two power ends of variable resistance (14) are connected to the power end, the regulation end of variable resistance (14) is connected to the regulation end of proportion solenoid valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642261.1U CN210044552U (en) | 2019-05-07 | 2019-05-07 | Adjustable negative pressure air source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920642261.1U CN210044552U (en) | 2019-05-07 | 2019-05-07 | Adjustable negative pressure air source |
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| Publication Number | Publication Date |
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| CN210044552U true CN210044552U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920642261.1U Active CN210044552U (en) | 2019-05-07 | 2019-05-07 | Adjustable negative pressure air source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111388772A (en) * | 2020-03-26 | 2020-07-10 | 吉林大学 | Quick cough relieving device of cardiovascular postoperative care |
| CN114060249A (en) * | 2021-11-11 | 2022-02-18 | 广州润虹医药科技股份有限公司 | Air channel structure of medical negative pressure machine |
-
2019
- 2019-05-07 CN CN201920642261.1U patent/CN210044552U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111388772A (en) * | 2020-03-26 | 2020-07-10 | 吉林大学 | Quick cough relieving device of cardiovascular postoperative care |
| CN114060249A (en) * | 2021-11-11 | 2022-02-18 | 广州润虹医药科技股份有限公司 | Air channel structure of medical negative pressure machine |
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