CN219090441U - Negative pressure aspirator - Google Patents

Abstract

The utility model relates to a negative pressure aspirator, which comprises a sealed liquid storage chamber and a controller, wherein the bottom of the liquid storage chamber is provided with a drain outlet, the top of the liquid storage chamber is provided with an internal suction interface for connecting a suction device, an internal negative pressure interface for connecting a negative pressure device and a cleaning liquid interface, the upper part of the inner side is provided with a spraying device with a spraying interface, the spraying interface is connected with a spray head, and the cleaning liquid interface is connected with the spraying interface through a booster pump; a sewage draining electromagnetic switch is arranged at the sewage draining outlet, a negative pressure switch electromagnetic valve is arranged at the internal negative pressure interface, a cleaning liquid electromagnetic valve is arranged at the cleaning liquid interface, and a spraying electromagnetic valve is arranged at the spraying interface; the controller is controlled and connected with a pollution discharge electromagnetic switch, a negative pressure switch electromagnetic valve, a cleaning liquid electromagnetic valve, a spraying electromagnetic valve, a booster pump and a power switch; this negative pressure aspirator can realize airtight treatment waste liquid and disinfection function to realize repeatedly used, reduce the manpower, reduce cost avoids medical personnel to empty lumbar muscle strain and occupational exposure risk when the waste liquid, is applicable to clinical use in the operation room.

Description

Negative pressure aspirator

Technical Field

The utility model relates to a negative pressure aspirator.

Background

The operating room is one of important platform departments of hospitals, and plays an important role in the overall operation of hospitals.

In some operations such as arthroscope and urocystoscope, a large amount of physiological saline is needed to flush the operation site, so that a large amount of waste liquid is generated, and the following two ways are adopted to treat the waste liquid in the prior art:

1. some waste collection bags were used to collect waste. However, the waste liquid collecting bag is a non-recyclable consumable, so that the consumption cost is high. In addition, for example, in the lower urinary tract endoscopic surgery, the amount of waste liquid is large, a plurality of nurses are required to lift up and pour the waste liquid into a sewage pool, lumbar muscle strain of medical staff is easy to cause, and workload burden of the medical staff is increased. In addition, in order to reuse the waste collection bag, the cost of medical waste is reduced, and the nurse is required to pour out the waste after manually opening the waste collection bag, thereby easily causing occupational exposure.

2. And collecting the surgical waste liquid by adopting some electric reusable waste liquid bottled negative pressure suction devices. However, because the waste liquid bottle is required to be manually cleaned after the use, the workload of medical staff is increased, the use efficiency is affected, occupational exposure is also easily caused, and the use safety is affected; and the device has large volume, is inconvenient for clinical use in an operation room and has high manufacturing cost.

Disclosure of Invention

The utility model aims to overcome the defects of non-recycling, high cost, large lumbar muscle strain and occupational exposure risk when medical staff pours waste liquid, inapplicability to clinical use in an operation room and the like of the traditional waste liquid collecting bag, and adopts a sealed liquid storage chamber with a spraying function structure to realize the functions of sealing treatment of waste liquid and disinfection, thereby realizing repeated use, reducing manpower and cost, avoiding lumbar muscle strain and occupational exposure risk when the medical staff pours waste liquid, and being applicable to clinical use in the operation room.

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

a negative pressure aspirator, comprising:

the device comprises a sealed liquid storage chamber, wherein the upper end and the lower end of the liquid storage chamber are respectively provided with a liquid storage chamber top and a liquid storage chamber bottom, the bottom of the liquid storage chamber is provided with a drain outlet, the top of the liquid storage chamber is provided with an internal suction interface used for being connected with a suction device, an internal negative pressure interface used for being connected with a negative pressure device and a cleaning liquid interface, a spraying device is arranged at the upper part of the inner side of the liquid storage chamber, the spraying device is provided with a spraying interface, the spraying interface is connected with a spray head, and the cleaning liquid interface is connected with the spraying interface through a booster pump;

a sewage draining electromagnetic switch is arranged at the sewage draining outlet, a negative pressure switch electromagnetic valve is arranged at the internal negative pressure interface, a cleaning liquid electromagnetic valve is arranged at the cleaning liquid interface, and a spraying electromagnetic valve is arranged at the spraying interface;

and the controller is in control connection with the blowdown electromagnetic switch, the negative pressure switch electromagnetic valve, the cleaning liquid electromagnetic valve, the spraying electromagnetic valve, the booster pump and the power switch.

Preferably, a highest liquid level limiting valve for sensing the highest liquid level is arranged at the upper part of the sealed liquid storage chamber, and the highest liquid level limiting valve is in signal transmission connection with the controller.

Preferably, a liquid level sensor is arranged in the sealed liquid storage chamber, and a control panel and an alarm are arranged outside the sealed liquid storage chamber; the control panel is provided with a control touch screen and a power switch key, the liquid level sensor is in signal connection with the controller and the control touch screen, the control touch screen is in signal connection with the controller, the power switch key is in signal connection with the controller, and the controller is in control connection with the alarm.

Preferably, a check valve is mounted at the internal negative pressure interface.

Preferably, a protective cover with an inner cavity is arranged at the top of the liquid storage chamber, the inner cavity forms a control and connecting pipe chamber, and the controller is arranged in the control and connecting pipe chamber; the inner negative pressure interface is arranged on the bottom surface of the control and connecting pipe chamber, the top surface of the control and connecting pipe chamber is provided with an outer negative pressure interface which is used for being directly connected with the negative pressure device, and the inner negative pressure interface is connected with the outer negative pressure interface through a pipeline.

Preferably, the inner suction interface is arranged on the bottom surface of the control and connecting pipe chamber, the top surface of the control and connecting pipe chamber is provided with an outer suction interface for directly connecting the suction device, and the inner suction interface is connected with the outer suction interface through a pipeline.

Preferably, the spraying interface can be annular and is installed on the inner wall of the sealed liquid storage chamber, and the spraying interface coincides with the central axis of the sealed liquid storage chamber.

Preferably, the cleaning solution interface is arranged on the top surface of the control and connecting pipe chamber, the spraying interface is arranged on the bottom surface of the control and connecting pipe chamber, and the spraying interface is connected with the cleaning solution interface through a pipeline.

Preferably, the cleaning liquid interface is a tap water interface for connecting a tap water supply device and is arranged on the top surface of the control and connecting pipe chamber, and the cleaning liquid electromagnetic valve is a tap water electromagnetic valve; the alcohol interface for connecting the alcohol supply device is also arranged on the top surface of the control and connecting pipe chamber, an alcohol electromagnetic valve is arranged at the alcohol interface, and the controller is in control connection with the alcohol electromagnetic valve.

Preferably, the sealed liquid storage chamber is arranged in the main box body, and the universal wheels are arranged at the bottom of the main box body.

Due to the adoption of the technical scheme, the utility model has the following advantages:

the negative pressure aspirator provided by the utility model can be used for hermetically treating waste liquid through the sealed liquid storage chamber, has large capacity and small volume, and is suitable for clinical use in an operation room; the waste liquid collecting bag replaces the traditional waste liquid collecting bag which can not be recycled, and the consumption of the waste liquid collecting bag can be reduced; the spraying device and the matched structure have the disinfection function, so that the device is environment-friendly and sanitary, can be reused, and saves the manufacturing cost; the waste liquid dumping work can be completed by only one nursing staff, so that the labor intensity of the nursing staff is reduced, the lumbar muscle strain and the occupational exposure risk of the medical staff when dumping the waste liquid are reduced, and the use safety is improved; the operation is simple and convenient, the operation efficiency is improved, the practicability and the economic benefit are good, and the popularization and the application are facilitated.

The negative pressure aspirator provided by the utility model can be provided with the universal wheels so as to be convenient to move, thereby further saving manpower and improving efficiency.

Drawings

FIG. 1 is a schematic view of a negative pressure aspirator according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a protective cover of a negative pressure aspirator according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a control panel of a negative pressure suction apparatus according to an embodiment of the present utility model.

The reference numerals in the drawings:

100 is a controller, 101 is a control panel, 102 is a control touch screen, 103 is a power on-off key, 1 is a sealed liquid storage chamber, 2 is a universal wheel, 3 is a main box, 4 is an outer negative pressure interface, 401 is a negative pressure device, 402 is a negative pressure switch electromagnetic valve, 403 is a pressure gauge, 5 is an inner negative pressure interface, 501 is a back valve, 6 is a spraying device, 7 is a liquid level sensor, 8 is a sewage outlet, 801 is a water flow speed measuring device, 9 is a highest liquid level limiting valve, 10 is an inner suction interface, 11 is an alcohol interface, 111 is an alcohol electromagnetic valve, 112 is an alcohol tank, 12 is a cleaning liquid interface, 120 is a booster pump, 121 is a cleaning liquid electromagnetic valve, 122 is a tap water supply device, 13 is a control and connecting pipe chamber, 14 is an outer suction interface, 15 is a protective cover, 18 is a spraying interface, 181 is a spraying electromagnetic valve, 19 is a pushing hand, 20 is a sewage electromagnetic switch, and 21 is a threading hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The negative pressure aspirator provided by the utility model can be used for treating waste liquid in a closed manner through the sealed liquid storage chamber, the spraying device and the matched structure, has a disinfection function, can be repeatedly used, reduces manpower, reduces cost, avoids lumbar muscle strain and occupational exposure risk when medical staff dumping waste liquid, and is suitable for clinical use in an operation room, aiming at the problems that the waste liquid collecting bag which cannot be recycled in the prior art is high in cost, large in lumbar muscle strain and occupational exposure risk when medical staff dumping waste liquid, and the like.

Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

Examples

The negative pressure aspirator provided in this embodiment, as shown in fig. 1, includes a sealed liquid storage chamber 1 and a controller 100. The sealed reservoir 1 may be a vertical cylinder, such as a cylinder or square cylinder.

The upper end of the sealed reservoir 1 has a reservoir top 17, which reservoir top 17 may be a top plate. The lower end of the sealed reservoir 1 has a reservoir bottom 16, which reservoir bottom 16 may be a bottom plate.

The top 17 of the liquid storage chamber is provided with an internal suction interface 10 which is used for connecting a suction device to suck the waste liquid into the sealed liquid storage chamber 1 for storage.

As shown in fig. 2, the top 17 of the liquid storage chamber is provided with an internal negative pressure interface 5 for connecting a negative pressure device 401, so that the suction device sucks the waste liquid into the sealed liquid storage chamber 1, and a negative pressure switch electromagnetic valve 402 is arranged at the internal negative pressure interface 5.

The bottom 16 of the liquid storage chamber is provided with a drain outlet 8 for discharging waste liquid stored in the sealed liquid storage chamber 1, and a drain electromagnetic switch 20 is arranged at the drain outlet 8.

The reservoir top 17 is provided with a cleaning liquid interface 12 for introducing cleaning liquid.

The cleaning solution interface 12 is connected with a spraying device 6 arranged at the upper part of the inner side of the sealed liquid storage chamber 1, the spraying device 6 is provided with a spraying interface 18, and a booster pump 120 is connected between the cleaning solution interface 12 and the spraying interface 18 and is used for boosting the cleaning solution.

The spraying interface 18 is connected with a spray head for spraying the cleaning liquid and cleaning the sealed liquid storage chamber 1 after the waste liquid is discharged.

A cleaning fluid solenoid valve 121 is installed at the cleaning fluid interface 12, and a spraying solenoid valve 181 is installed at the spraying interface 18.

The controller 100 is controlled to connect the blowdown solenoid valve 20, the negative pressure switch solenoid valve 402, the cleaning liquid solenoid valve 121, the spray solenoid valve 181, the booster pump 120 and the power switch.

The negative pressure aspirator of this embodiment, when in use, may include the steps of:

medical staff conveniently pour waste liquid generated by operation into the waste liquid container, a suction tube can be adopted as a suction device, one end of the suction tube is introduced into waste liquid in the waste liquid container, and the other end of the suction tube is connected with the internal suction interface 10;

the power switch and the negative pressure switch electromagnetic valve 402 are opened through the controller 100 to open the internal negative pressure interface 4 and open the negative pressure device 401, so that the waste liquid in the waste liquid container is sucked into the sealed liquid storage chamber 1 through the suction pipe; during the imbibition process, the blowdown electromagnetic switch 20 is closed;

when the liquid level in the sealed liquid storage chamber 1 reaches a preset value, the negative pressure switch electromagnetic valve 402 is closed by the controller 100 to close the internal negative pressure interface 4, so that the negative pressure device 401 is closed, and the waste liquid suction is stopped;

moving the sealed liquid storage chamber 1 to a waste liquid discharge position, and opening a sewage electromagnetic switch 20 through a controller 100 to open a sewage outlet 8, so that waste liquid in the sealed liquid storage chamber 1 is discharged through the sewage outlet 8;

after the waste liquid in the sealed liquid storage chamber 1 is discharged, connecting the cleaning liquid interface 12 with the liquid outlet of the cleaning liquid container, and opening the cleaning liquid electromagnetic valve 121 and the spraying electromagnetic valve 181 through the controller 100 to open the cleaning liquid interface 12 and the spraying interface 18; the booster pump 120 is started, so that the pressurized cleaning liquid is sprayed out through the spray head to clean and seal the inside of the liquid storage chamber 1; the cleaning time may be 30 seconds;

after the cleaning is completed, the cleaning liquid electromagnetic valve 121, the spraying electromagnetic valve 181 and the booster pump 120 are closed by the controller 100 to close the cleaning liquid interface 12 and the spraying interface 18; in the cleaning process, the cleaned sewage in the sealed liquid storage chamber 1 is discharged through the sewage outlet 8;

after the sewage is discharged after the cleaning is finished, the controller 100 closes the sewage electromagnetic switch 20 and the sewage outlet 8;

the negative pressure aspirator can then be moved to storage by the controller 100 turning off the power switch.

As shown in fig. 1, a highest liquid level limit valve 9 can be installed at the upper part in the sealed liquid storage chamber 1, and is used for sensing the highest liquid level in the sealed liquid storage chamber 1, and the highest liquid level limit valve 9 is in signal transmission connection with a controller 100.

When the highest liquid level in the sealed liquid storage chamber 1 reaches the position of the highest liquid level limit valve 9, the highest liquid level limit valve 9 sends a signal to the controller 100, and the controller 100 controls to close the negative pressure switch electromagnetic valve 402 and close the negative pressure device 401, so that the suction of waste liquid into the sealed liquid storage chamber 1 through the suction device is stopped, and the excessive liquid level of the waste liquid in the sealed liquid storage chamber 1 is avoided.

As shown in fig. 1 and 3, the sealed liquid storage chamber 1 can be internally provided with a liquid level sensor 7, and the outside can be provided with a control panel 101 and an alarm; the control panel 101 is provided with a control touch screen 102 and a power switch key 103, the liquid level sensor 7 is in signal connection with the controller 100 and the control touch screen 102, the control touch screen 102 is in signal connection with the controller 100, the power switch key 103 is in signal connection with the controller 100, and the controller 100 is in control connection with an alarm.

The liquid level sensor 7 detects the liquid level of the waste liquid in the sealed liquid storage chamber 1 and displays the liquid level data on the control touch screen 102. When the level data exceeds a preset value, the controller 100 controls an alarm, which may be an acoustic or/and optical alarm, to alarm. Meanwhile, the controller 100 controls the negative pressure switch electromagnetic valve 402 to be closed, and the negative pressure device 401 is closed, so that the suction of waste liquid into the sealed liquid storage chamber 1 through the suction device is stopped, and the liquid level of the waste liquid in the sealed liquid storage chamber 1 is prevented from being too high.

The controller 100 may switch the power switch by operating the power switch key 103.

As shown in fig. 1, a check valve 501 may be installed at the internal negative pressure port 5.

When the liquid level of the waste liquid in the sealed liquid storage chamber 1 is too high, the waste liquid can be effectively prevented from flowing back into the external pipe body such as the negative pressure device 401 through the internal negative pressure interface 5 by the check valve 501, the damage of the device is avoided, and the device is particularly suitable for the failure condition of the liquid level sensor 7 and the highest liquid level limiting valve 9.

The top 17 of the liquid storage chamber can be provided with a protective cover 15 with an inner cavity, the inner cavity forms a control and connecting pipe chamber 13, and the controller 100 is arranged in the control and connecting pipe chamber 13; the inner negative pressure interface 5 is arranged on the bottom surface of the control and connecting pipe chamber 13, the top surface of the control and connecting pipe chamber 13 is provided with the outer negative pressure interface 4 which is used for directly connecting the negative pressure device 401, and the inner negative pressure interface 5 is connected with the outer negative pressure interface 4 through a pipeline.

The inner suction port 10 may be disposed at the bottom surface of the control and connection pipe chamber 13, and the top surface of the control and connection pipe chamber 13 is provided with an outer suction port 14 for directly connecting with a suction device, and the inner suction port 10 is connected with the outer suction port 14 through a pipeline.

The cleaning solution interface 12 can be arranged on the top surface of the control and connecting pipe chamber 13, the spraying interface 18 is arranged on the bottom surface of the control and connecting pipe chamber 13, and the spraying interface 18 is connected with the cleaning solution interface 12 through a pipeline.

The controller 100 and the connecting pipelines are arranged in the control and connecting pipe chamber 13 formed by the inner cavity of the protective cover 15, so that the whole negative pressure aspirator is concise and attractive, the messy winding of the pipelines is avoided, and the controller 100 and the pipelines are protected.

The spraying interface 18 can be annular and is arranged on the inner wall of the sealed liquid storage chamber 1, and the spraying interface 18 coincides with the central axis of the sealed liquid storage chamber 1.

The annular spraying interface 18 facilitates the installation of a plurality of spray heads distributed annularly, so that the annular inner wall of the sealed liquid storage chamber 1 is sufficiently cleaned.

The cleaning liquid interface 12 may be a tap water interface, and is used for connecting with a tap water supply device 122, and is installed on the top surface of the control and connection pipe chamber 13, and the cleaning liquid electromagnetic valve 121 is a tap water electromagnetic valve; an alcohol interface 11 is further arranged on the top surface of the control and connecting pipe chamber 13 and is used for being connected with an alcohol supply device, an alcohol electromagnetic valve 111 is arranged at the alcohol interface 11, and the controller 100 is controlled to be connected with the alcohol electromagnetic valve 111.

When in use, tap water can be sprayed for cleaning, and then alcohol can be sprayed for disinfection. That is, after washing by spraying tap water, the alcohol port 11 is connected to the outlet of the alcohol supply device, and the alcohol solenoid valve 111 and the spray solenoid valve 181 are opened by the controller 100 to open the alcohol port 11 and the spray port 18; the booster pump 120 is started, so that the pressurized alcohol is sprayed out through the spray head to disinfect the inside of the sealed liquid storage chamber 1;

after the sterilization is completed, the alcohol solenoid valve 111, the spray solenoid valve 181 and the booster pump 120 are closed by the controller 100 to close the alcohol port 11 and the spray port 18; in the cleaning process, the cleaned sewage in the sealed liquid storage chamber 1 is discharged through the sewage outlet 8.

The tap water supply 122 may be a tap water supply pipe, and the cleaning liquid joint 12 may be connected to the tap water supply pipe through a pipe. The alcohol supply may be an alcohol reservoir 112. The alcohol port 11 can be connected with the outlet of the alcohol tank through a pipeline.

The sealed liquid storage chamber 1 can be installed in the main box body 3, and the universal wheel 2 is installed to the bottom of the main box body 3, is convenient for remove the main box body 3 through the universal wheel 2 to remove sealed liquid storage chamber 1.

The main case 3 is provided with openings corresponding to the openings such as the interfaces of the sealed liquid storage chamber 1.

The number of the universal wheels 2 can be multiple, and the universal wheels can be symmetrically distributed or uniformly distributed along the circumference so as to stably support and move the main box body 3 and seal the liquid storage chamber 1.

A water flow velocity measuring device 801, such as a water flow velocity sensor, may be installed at the drain outlet 8 for detecting the velocity of the discharged waste or contaminated liquid at the drain outlet 8.

The outer wall of the main box body 3 can be connected with a pushing handle 19, so that the hand movement is facilitated.

As shown in fig. 2, a pressure gauge 403 for measuring pressure can be installed at the outer negative pressure interface 4 to detect the pressure of the negative pressure device 401, so as to ensure the normal operation thereof.

The protective cover 15 can be provided with a threading hole 21, so that the liquid level sensor 7 and the highest liquid level limiting valve 9 can be conveniently threaded.

The number of the inner negative pressure interfaces 5 and the outer negative pressure interfaces 4 can be multiple, for example, three, so as to connect with multiple negative pressure suction pipes of the negative pressure device 401 at the same time, thereby improving the liquid suction efficiency.

As shown in fig. 1 and 3, the number of the inner suction ports 10 and the outer suction ports 14 may be plural, for example, three, respectively, so as to connect plural suction devices at the same time, thereby improving the efficiency of sucking the waste liquid into the sealed liquid storage chamber 1.

As shown in fig. 3, a control panel 101 is provided on the top surface of the protective cover 15 for easy operation and display.

The controller 100 can detect the drainage flow rate through the water flow speed measuring device 801, after the drainage is completed, the controller 100 can open the cleaning liquid electromagnetic valve 121 to spray cleaning, and then open the alcohol electromagnetic valve 111 to spray and sterilize.

A liquid-suction key may be provided on the control touch screen 102. When the liquid suction key is pressed, the negative pressure switching electromagnetic valve 402 is opened to open the inner negative pressure port 5 and the outer negative pressure port 4, and the negative pressure device 401 is opened, so that the waste liquid starts to be sucked from the suction device, the outer suction port 14 and the inner suction port 10.

When the liquid suction key is pressed again, the electromagnetic valve, the interface and the device are closed, and liquid suction is stopped.

A drain key may be provided on the control touch screen 102. When the drain key is pressed down, the drain electromagnetic switch 20 is turned on, so that the drain outlet 8 is opened, and the medical waste liquid or the cleaning waste liquid starts to be discharged.

When the drain key is pressed again, the drain electromagnetic switch 20 and the drain outlet 8 are closed, and the drain is stopped.

A wash key may be provided on the control touch screen 102. When the cleaning key is pressed, the cleaning liquid solenoid valve 121, the booster pump 120 and the spray solenoid valve 181 are opened, so that the cleaning liquid interface 12 and the spray interface 18 are opened, and the pressurized cleaning liquid such as tap water is sprayed to the sealed liquid storage chamber 1 through the spray head, thereby cleaning.

When the cleaning key is pressed again, the electromagnetic valve, the interface and the device are closed, and cleaning is stopped.

A disinfection key may be provided on the control touch screen 102. Pressing the disinfection key opens the alcohol solenoid valve 111, the booster pump 120 and the spray solenoid valve 181, thereby opening the alcohol port 11 and the spray port 18, spraying the pressurized alcohol to the sealed liquid storage chamber 1 through the spray head, and disinfecting.

When the disinfection key is pressed again, the electromagnetic valve, the interface and the device are closed, and disinfection is stopped.

When the power switch is used, the power switch key is pressed down, and the power switch is turned on; then, when a corresponding operation key on the control touch screen 102 is pressed, the controller 100 issues an instruction to perform a desired operation. The control touch screen 102 can display the working states of liquid suction, liquid discharge, cleaning, disinfection and the like.

The water flow speed measuring device 801 can be in signal connection with the control touch screen 102. The control touch screen 102 may display the drain flow rate.

The negative pressure device 401 may be a vacuum device such as a vacuum pump for reducing the pressure of the gas in the sealed liquid storage chamber 1, so as to facilitate the suction of the waste liquid by the suction device. The negative pressure device 401 can also be provided with rollers, so that the movement is convenient. The drain port of the waste liquid discharge portion may be fixedly provided with a base of the negative pressure device 401. The base may be provided with a ramp surface to facilitate pushing the negative pressure device 401 along the ramp surface into the base. The middle of the base is a funnel structure capable of containing the retained water, and a drain pipe inserted into the water outlet can be arranged below the funnel structure. After the drainage key is pressed, medical waste liquid or cleaning waste liquid directly flows into the sewer through the drain pipe and the sewer outlet, so that high-efficiency and full drainage is realized.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A negative pressure aspirator, comprising:

the liquid storage device comprises a sealed liquid storage chamber (1), wherein the upper end and the lower end of the liquid storage chamber are respectively provided with a liquid storage chamber top (17) and a liquid storage chamber bottom (16), the liquid storage chamber bottom (16) is provided with a drain outlet (8), the liquid storage chamber top (17) is provided with an internal suction interface (10) for connecting a suction device, an internal negative pressure interface (5) for connecting a negative pressure device (401) and a cleaning liquid interface (12), a spraying device (6) is arranged on the upper part of the inner side, the spraying device (6) is provided with a spraying interface (18), the spraying interface (18) is connected with a spray head, and the cleaning liquid interface (12) is connected with the spraying interface (18) through a booster pump (120);

a sewage draining electromagnetic switch (20) is arranged at the sewage draining outlet (8), a negative pressure switch electromagnetic valve (402) is arranged at the inner negative pressure interface (5), a cleaning liquid electromagnetic valve (121) is arranged at the cleaning liquid interface (12), and a spraying electromagnetic valve (181) is arranged at the spraying interface (18);

the controller (100) is in control connection with the blowdown electromagnetic switch (20), the negative pressure switch electromagnetic valve (402), the cleaning liquid electromagnetic valve (121), the spraying electromagnetic valve (181), the booster pump (120) and the power switch.

2. The negative pressure aspirator according to claim 1, characterized in that a highest liquid level limit valve (9) for sensing the highest liquid level is installed at the inner upper part of the sealed liquid storage chamber (1), and the highest liquid level limit valve (9) is in signal transmission connection with the controller (100).

3. The negative pressure aspirator according to claim 2, characterized in that the sealed liquid storage chamber (1) is internally provided with a liquid level sensor (7), and externally provided with a control panel (101) and an alarm; control panel (101) is last to be provided with control touch-sensitive screen (102) and switch key (103), level sensor (7) signal connection controller (100) with control touch-sensitive screen (102), control touch-sensitive screen (102) signal connection controller (100), switch key (103) signal connection controller (100), controller (100) control connection the alarm.

4. The negative pressure aspirator according to claim 1, characterized in that a check valve (501) is mounted at the internal negative pressure interface (5).

5. The suction apparatus as claimed in any one of claims 1-4, wherein the reservoir top (17) is fitted with a protective cover (15) having an inner cavity constituting a control and connection chamber (13), the controller (100) being fitted within the control and connection chamber (13); the inner negative pressure interface (5) is arranged on the bottom surface of the control and connecting pipe chamber (13), the top surface of the control and connecting pipe chamber (13) is provided with an outer negative pressure interface (4) which is used for being directly connected with the negative pressure device (401), and the inner negative pressure interface (5) is connected with the outer negative pressure interface (4) through a pipeline.

6. Negative pressure aspirator according to claim 5, characterized in that the inner aspiration interface (10) is arranged at the bottom surface of the control and connection tube chamber (13), the top surface of the control and connection tube chamber (13) is provided with an outer aspiration interface (14) for direct connection to the aspiration device, the inner aspiration interface (10) being connected to the outer aspiration interface (14) by a pipeline.

7. The negative pressure aspirator according to claim 5, characterized in that the spray interface (18) may be ring-shaped, mounted on the inner wall of the sealed liquid storage chamber (1), the spray interface (18) coinciding with the central axis of the sealed liquid storage chamber (1).

8. The vacuum suction apparatus as claimed in claim 7, wherein the cleaning liquid interface (12) is provided on the top surface of the control and connection chamber (13), the spray interface (18) is provided on the bottom surface of the control and connection chamber (13), and the spray interface (18) is connected to the cleaning liquid interface (12) through a pipe.

9. The vacuum aspirator according to claim 5, characterized in that the cleaning liquid interface (12) is a tap water interface for connecting a tap water supply device (122), installed on the top surface of the control and connection pipe chamber (13), the cleaning liquid solenoid valve (121) is a tap water solenoid valve; the alcohol interface (11) for connecting the alcohol supply device is further arranged on the top surface of the control and connecting pipe chamber (13), an alcohol electromagnetic valve (111) is arranged at the alcohol interface (11), and the controller (100) is in control connection with the alcohol electromagnetic valve (111).

10. Negative pressure aspirator according to any of claims 1-4, characterized in that the sealed reservoir (1) is mounted in a main housing (3), the bottom of the main housing (3) being mounted with universal wheels (2).

Images