Negative pressure irrigation device and method of irrigation

Abstract

The application discloses a kind of negative pressure flushing devices, comprising: air source part, first pipeline, flushing part and second pipeline are connected in turn;Air source part provides gas for flushing;First pipeline is connected with the air source part and flushing part;Flushing part includes first control valve and gas mass flow meter connected by main pipeline;Second control valve leading to external environment is further provided on the first branch pipeline between the first control valve and gas mass flow meter;The flushing part is connected with the first pipeline by the first control valve;Second pipeline, one end of which is connected with the flushing part through the gas mass flow meter, the other end is connected with the negative pressure suction system pipeline to be flushed outside.This negative pressure flushing device solves the technical problem that human waste accumulation in the hospital negative pressure suction system blocks the system terminal and system pipeline, greatly improves the reliability and safety of hospital life support system operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline cleaning, and more particularly to a negative pressure flushing device and a flushing method. BACKGROUND

[0002] The hospital negative pressure suction system is a medical equipment established by hospitals for the convenience of patient treatment and rehabilitation and the improvement of work quality and efficiency, and has been widely applied to large, medium and small hospitals in recent years. The negative pressure suction system is composed of a negative pressure suction unit, a vacuum storage tank, a pipeline system, a negative pressure suction system pipeline terminal and the like.

[0003] The negative pressure suction system is widely applied in various core clinical departments of hospitals, such as hospital obstetrics and gynecology, rescue rooms, operating rooms, intensive care rooms and treatment rooms and various medical sites, and is used for sucking sputum of patients and sucking pus, blood and ascites during operations. The basic principle is to form a negative pressure environment through a central pump station, connect to various clinical use departments of the whole hospital through a closed pipeline system, and maintain a constant negative pressure state all day long. Although the negative pressure suction system is designed to extract air, it is often accompanied by the adhesion of fluid, solid and aerosol, which may cause the internal components of the pipeline and parts to be blocked. The accumulation of these foreign matters not only reduces the performance of the system, which is inconvenient for clinical use, but also may cause failure and medical accidents.

[0004] However, there is no systematic cleaning scheme for the negative pressure suction system when it is congested and blocked in the prior art. SUMMARY

[0005] In view of at least one defect or improvement demand of the prior art, the present application provides a negative pressure flushing device and a flushing method to solve the technical problem of the accumulation of human waste in the hospital negative pressure suction system blocking the system terminal and the system pipeline, so that the reliability and safety of the hospital life support system operation are greatly improved.

[0006] To achieve the above-mentioned purpose, according to the first aspect of the present application, a negative pressure flushing device is provided, comprising: a gas source part, a first pipeline 7, a flushing part 12 and a second pipeline 8 connected in sequence;

[0007] The gas source part provides gas for flushing;

[0008] The first pipeline 7 connects the gas source part and the flushing part 12;

[0009] The flushing part 12 comprises a first control valve 13 and a gas mass flow meter 9 connected by a main pipeline; a second control valve 18 opening to the external environment is further arranged on a first branch pipeline between the first control valve 13 and the gas mass flow meter 9; the flushing part 12 is connected to the first pipeline 7 through the first control valve 13;

[0010] The second pipeline 8 has one end connected to the flushing part 12 through the gas mass flow meter 9 and the other end connected to an external negative pressure suction system pipeline to be flushed.

[0011] Further, a third control valve 16 is arranged between the second pipeline 8 and the gas mass flow meter 9.

[0012] A first gas pressure sensor 10 is further arranged on the main pipeline.

[0013] Further, a fourth control valve 14 is arranged on the main pipeline.

[0014] A second branch pipeline connected to the two ends of the fourth control valve 14 has a fifth control valve 15, a flushing gas pressure boosting part 11 and a sixth control valve 17 arranged in sequence.

[0015] The flushing gas pressure boosting part 11 is used to boost the flushing gas.

[0016] Further, a second gas pressure sensor 19 is arranged on the second branch pipeline.

[0017] Further, the gas source part uses the existing compressed air facility in the hospital as the basic gas source for flushing, and can provide flushing gas with a pressure of 0.3MPa-0.5MPa.

[0018] The flushing gas pressure boosting part 11 can boost the flushing gas to a pressure of 1.6MPa.

[0019] According to the second aspect of the present application, a negative pressure flushing method is provided, comprising:

[0020] Making the negative pressure suction system pipeline to be flushed pass through the air of the external environment and enter a gas flow self-checking process to measure and acquire the gas flow data in the pipeline.

[0021] If the gas flow data in the pipeline is within a first preset gas flow range, flushing gas provided by the existing compressed air facility in the hospital is introduced into the negative pressure suction system pipeline for pipeline flushing until the gas flow data in the gas flow self-checking process pipeline is within a second preset gas flow range.

[0022] Further, the method further comprises:

[0023] After pipeline flushing, if the gas flow data in the gas flow self-checking process pipeline is still within the first preset gas flow range, the boosted flushing gas is introduced into the negative pressure suction system pipeline for pipeline flushing until the gas flow data in the gas flow self-checking process pipeline is within the second preset gas flow range.

[0024] Further, the first preset gas flow range is [0L / min, 27L / min); and the second preset gas flow range is [27L / min, 30L / min];

[0025] The existing compressed air facilities in the hospital can provide 0.3MPa-0.5MPa flushing gas;

[0026] The pressurized flushing gas can reach 1.6MPa.

[0027] According to a third aspect of the present application, a negative pressure flushing method based on the above negative pressure flushing device is provided, comprising:

[0028] The second control valve 18, the third control valve 16 and the fourth control valve 14 are opened, and the first control valve 13, the fifth control valve 15 and the sixth control valve 17 are closed, entering the gas flow self-checking process, and the gas flow data in the pipeline is measured by the gas mass flow meter 9;

[0029] If the gas flow data in the pipeline is in [0L / min, 27L / min), the first control valve 13, the third control valve 16 and the fourth control valve 14 are opened, and the second control valve 18, the fifth control valve 15 and the sixth control valve 17 are closed, and the 0.3MPa-0.5MPa flushing gas provided by the existing compressed air facilities in the hospital is introduced into the negative pressure suction system pipeline for pipeline flushing, until the gas flow data in the gas flow self-checking process pipeline is in [27L / min, 30L / min].

[0030] Further, it further comprises:

[0031] After the pipeline flushing, if the gas flow data in the gas flow self-checking process pipeline is still in [0L / min, 27L / min), the first control valve 13, the fifth control valve 15, the sixth control valve 17 and the third control valve 16 are opened, and the second control valve 18 and the fourth control valve 14 are closed, and the pressurized flushing gas of 1.6MPa is introduced into the negative pressure suction system pipeline by the flushing gas pressurizing unit 11 for pipeline flushing, until the gas flow data in the gas flow self-checking process pipeline is in [27L / min, 30L / min].

[0032] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0033] (1) The negative pressure flushing device of the present application solves the technical problem of the blockage of the system terminal and the system pipeline by the accumulation of human waste in the hospital negative pressure suction system, fills the technical gap in this field, and greatly improves the reliability and safety of the operation of the hospital life support system.

[0034] (2) The negative pressure flushing device of the present application utilizes the existing air source conditions in the hospital, and does not need to build other air source station buildings, making the implementation more convenient and fast.

[0035] (3) The negative pressure flushing device of the present application introduces a flushing gas pressurizing part. When the flushing gas provided by the existing compressed air facilities in the hospital is not enough to flush away stubborn blockage dirt, the gas pressure of the flushing gas can be increased in time to enhance the impact force during flushing, which is more convenient for cleaning more stubborn blockage dirt.

[0036] (4) The negative pressure flushing method of the present application introduces a blockage self-checking mechanism. The main pipeline in the gas flow self-checking process can be detected for gas flow before and after each flushing, and the flushing decision is made based on the gas flow detection data each time, so that the pipeline congestion can be prevented in advance and the gas can be stopped in time after the pipeline is cleaned, which is convenient and fast to operate and more economical. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1 A structure schematic diagram of a negative pressure flushing device provided by the present application is shown in the following figure.

[0039] Figure 1 Explanation of reference numerals in the drawings:

[0040] 1, medical compressed air terminal; 2, negative pressure suction system terminal; 3, spherical sealing joint; 4, medical compressed air maintenance valve; 5, negative pressure suction system pipeline special plug; 6, medical compressed air pipeline special plug; 7, first pipeline; 8, second pipeline; 9, gas mass flow meter; 10, first gas pressure sensor; 11, flushing gas pressurizing part; 12, flushing part; 13, first control valve; 14, fourth control valve; 15, fifth control valve; 16, third control valve; 17, sixth control valve; 18, second control valve; 19, second gas pressure sensor. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0042] The terms "first", "second" or "third" and the like in the description of the specification, claims or the above drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" or "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0043] As described in the background section, there is currently no systematic cleaning solution for negative pressure suction systems when congested. Based on this technical status, the present application proposes a negative pressure flushing device and a flushing method. The present application uses the existing compressed air facilities in the hospital as the basic gas source, and after automatic pressurization, it enters the blocked negative pressure suction system pipeline through the connecting pipeline of the special joint, and uses low-pressure compressed air for high-speed flushing, which quickly disperses the viscous waste in the terminal and terminal pipeline of the negative pressure suction system, forming a complete passage, and providing a systematic cleaning solution for the negative pressure suction system when congested.

[0044] Reference Figure 1 The negative pressure flushing device proposed by the present application will be described in detail below in an embodiment.

[0045] A negative pressure flushing device, comprising: a gas source part, a first pipeline 7, a flushing part 12 and a second pipeline 8 connected in sequence.

[0046] The gas source part provides gas for flushing, in Figure 1 , the gas source part can be considered to be composed of a medical compressed air terminal 1, a medical compressed air maintenance valve 4, a medical compressed air pipeline special plug 6 and corresponding pipelines, etc., that is Figure 1 , the lower one of the two longer parallel pipes. Preferably, the gas source part uses the existing compressed air facilities in the hospital as the basic gas source for flushing, which can provide 0.3MPa-0.5MPa of flushing gas, and in actual use it generally provides about 0.4MPa of flushing gas. The negative pressure flushing device of the present application makes use of the existing gas source conditions in the hospital, without the need to build other gas source stations, and is more convenient and fast to implement.

[0047] The first pipeline 7 connects the gas source part and the flushing part 12. The first pipeline 7 is actually a special connecting pipeline for medical compressed air.

[0048] The flushing part 12 at least includes the first control valve 13 and the gas mass flow meter 9 connected by the main pipeline. The second control valve 18 opening to the external environment is arranged on the first branch pipeline between the first control valve 13 and the gas mass flow meter 9. The flushing part 12 is connected with the first pipeline 7 through the first control valve 13.

[0049] One end of the second pipeline 8 is connected with the flushing part 12 through the gas mass flow meter 9, and the other end is connected with the external negative pressure suction system pipeline to be flushed. The second pipeline 8 is actually a special connecting pipeline for the negative pressure suction system.

[0050] Through the above arrangement, when the second control valve 18 is opened, the flow data of the gas sucked from the external environment to the negative pressure suction system pipeline (the upper one of the two longer parallel pipelines) can be detected by the gas mass flow meter 9, and the congestion of the negative pressure suction system pipeline can be judged accordingly. If it is congested, the second control valve 18 can be closed and the first control valve 13 can be opened, so that the flushing gas from the gas source part flows into the negative pressure suction system pipeline, and the flushing of the foreign matter causing the congestion is realized. Figure 1 Further, the third control valve 16 is arranged between the second pipeline 8 and the gas mass flow meter 9, which isolates the gas mass flow meter 9 from the negative pressure suction system pipeline, and better protects the gas mass flow meter 9. The first gas pressure sensor 10 is arranged on the main pipeline, which is used to obtain the specific gas pressure data of the flushing gas provided by the gas source part, so as to accurately grasp the "force" of the flushing gas.

[0051] Further, the fourth control valve 14 is arranged on the main pipeline. The fifth control valve 15, the flushing gas pressurizing part 11 and the sixth control valve 17 are arranged in sequence on the second branch pipeline connecting the two ends of the fourth control valve 14. The flushing gas pressurizing part 11 is used to pressurize the flushing gas. The reason for further adding this series of arrangements is that the original flushing gas provided by the gas source part may not be able to flush away the stubborn dirt in the negative pressure suction system pipeline. The flushing gas pressurizing part 11 is added to pressurize the flushing gas, so as to increase the "force" and facilitate the flushing of the stubborn dirt.

[0052] Further, the second gas pressure sensor 19 is arranged on the second branch pipeline. The flushing gas pressurizing part 11 can pressurize the flushing gas to 1.6 MPa. In order to ensure that the flushing gas can be pressurized to 1.6 MPa, the second gas pressure sensor 19 is added.

[0053]

[0054] ​The negative pressure flushing device of the present application solves the technical problem of the blockage of the system terminal and the system pipeline by the human waste accumulation in the hospital negative pressure suction system, fills the technical gap in this field, and greatly improves the reliability and safety of the operation of the hospital life support system.

[0055] The negative pressure flushing method for the above negative pressure flushing device can refer to the following embodiments.

[0056] When the terminal and the pipeline of the hospital negative pressure suction system have been in use for a period of time, the blockage condition can be checked by the negative pressure flushing device. The pipeline special plug 5 and the second pipeline 8 are connected to the flushing part 12, the fourth control valve 14, the third control valve 16 and the second control valve 18 are opened, and the first control valve 13, the fifth control valve 15 and the sixth control valve 17 are closed, at this time the pipeline is through, and due to the negative pressure in the pipeline of the negative pressure suction system, the air in the external environment is sucked in from the second control valve 18 (i.e. Figure 1 The air above the second control valve 18 shown in the figure is sucked into the pipeline through the second control valve 18), forming a pipeline blockage self-checking path, when the data fed back by the gas mass flow meter 9 on the digital display screen of the flushing part 12 is 0-10 L / min, it indicates that the blockage is severe and needs to be repaired as soon as possible; when the data fed back by the gas mass flow meter 9 on the flushing part 12 is 10-20 L / min, it indicates that the blockage is moderate and needs to be used with caution; when the data fed back by the gas mass flow meter 9 on the flushing part 12 is 20-30 L / min, it indicates that the blockage is light and needs to be evaluated before use.

[0057] When the negative pressure suction system terminal and / or pipeline is blocked, the pipeline dedicated plug 5, the medical compressed air pipeline dedicated plug 6, the first pipeline 7 and the second pipeline 8 are connected to the flushing part 12, the first control valve 13, the fourth control valve 14 and the third control valve 16 are opened, and the fifth control valve 15, the sixth control valve 17 and the second control valve 18 are closed, and the pipeline is flushed with gas. At this time, the value of the first gas pressure sensor 10 is close to 0.4 MPa (the existing compressed air facilities in the hospital are used as the basic gas source for flushing, and can provide 0.3 MPa-0.5 MPa of flushing gas. In actual use, it generally provides about 0.4 MPa of flushing gas). After flushing, the first control valve 13 is closed, the second control valve 18 is opened, and the pipeline blockage self-checking path is formed again. At this time, the pipeline working pressure and instantaneous flow are displayed on the digital display screen of the flushing part 12 through the gas mass flow meter 9 and the first gas pressure sensor 10. When the data of the gas mass flow meter 9 is close to 30 L / min, more specifically, when the data of the gas mass flow meter 9 is in [27 L / min, 30 L / min], it is considered that the negative pressure suction system terminal and / or pipeline has been removed from the blockage, and the flushing process is terminated. If the data of the gas mass flow meter 9 is still in [0 L / min, 27 L / min), the flushing process continues.

[0058] When the data of the gas mass flow meter 9 cannot be close to or reach 30 L / min (or still cannot be in [27 L / min, 30 L / min], or still in [0 L / min, 27 L / min) through the above connection method), the fourth control valve 14 and the second control valve 18 are closed, and the first control valve 13, the fifth control valve 15, the sixth control valve 17 and the third control valve 16 are opened. The flushing gas booster part 11 starts to work, and the 0.4 MPa or so of compressed air generated in the medical compressed air terminal 1 is boosted to 1.0-1.6 MPa and injected into the pipeline. At the same time, the gas mass flow meter 9 and the second gas pressure sensor 19 are used to display the gas pressure and flow in the device in real time. When the value of the gas mass flow meter 9 is close to or reaches 30 L / min, it is considered that the pipeline blockage has been removed, and the flushing process is terminated. If the data of the gas mass flow meter 9 is still in [0 L / min, 27 L / min), the flushing process continues.

[0059] The negative pressure flushing method of the present application introduces a blockage self-checking mechanism, and the gas flow of the main pipeline in the gas flow self-checking process can be detected before and after each flushing, and the flushing decision is made based on the gas flow detection data each time, so that the pipeline congestion can be prevented in advance and the pipeline cleaning is completed in time to stop the gas operation, which is convenient, fast and more economical.

[0060] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations, even if such combinations or integrations are not explicitly described in the present disclosure. In particular, the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present disclosure, and all such combinations and / or integrations fall within the scope of the present disclosure.

[0061] Although the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it should be understood by those skilled in the art that various changes in form and detail can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined only by the appended claims, and should be defined by the equivalents of the appended claims.

Claims

1. A method of negative pressure irrigation, characterized in that, The negative pressure flushing device used comprises a gas source part, a first pipeline (7), a flushing part (12) and a second pipeline (8) connected in sequence; The gas source part provides gas for flushing; The first pipeline (7) connects the gas source part and the flushing part (12); The flushing part (12) comprises a first control valve (13) and a gas mass flow meter (9) connected through a main pipeline; a second control valve (18) opening to the external environment is further arranged on a first branch pipeline between the first control valve (13) and the gas mass flow meter (9); the flushing part (12) is connected to the first pipeline (7) through the first control valve (13); The second pipeline (8) is connected to the flushing part (12) through the gas mass flow meter (9) at one end and connected to an external negative pressure suction system pipeline to be flushed at the other end; The gas source part is composed of a medical compressed air terminal (1), a medical compressed air maintenance valve (4), a medical compressed air pipeline special plug (6) and corresponding pipeline parts; a third control valve (16) is arranged between the second pipeline (8) and the gas mass flow meter (9); A first gas pressure sensor (10) is further arranged on the main pipeline; a fourth control valve (14) is further arranged on the main pipeline; A second branch pipeline connecting two ends of the fourth control valve (14) is sequentially provided with a fifth control valve (15), a flushing gas pressurizing part (11) and a sixth control valve (17); The flushing gas pressurizing part (11) is used for pressurizing the flushing gas; The negative pressure flushing method comprises: The air of the negative pressure suction system pipeline to be flushed penetrating the external environment enters a self-checking process to measure and acquire gas flow data in the pipeline; If the gas flow data in the pipeline is in a first preset gas flow range, flushing gas provided by the existing compressed air facility of the hospital is introduced into the negative pressure suction system pipeline to flush the pipeline until the gas flow data in the gas flow self-checking process pipeline is in a second preset gas flow range.

2. The negative pressure irrigation method of claim 1, wherein, A second gas pressure sensor (19) is further arranged on the second branch pipeline.

3. The negative pressure irrigation method of claim 2, wherein, The gas source part uses the existing compressed air facility of the hospital as the basic gas source for flushing, and can provide flushing gas with a pressure of 0.3MPa-0.5MPa; The flushing gas pressurizing part (11) can pressurize the flushing gas to 1.6MPa.

4. The negative pressure irrigation method of claim 1, wherein, Further comprising: After pipeline flushing, if the gas flow data in the gas flow self-checking process pipeline is still in the first preset gas flow range, the pressurized flushing gas is introduced into the negative pressure suction system pipeline to flush the pipeline until the gas flow data in the gas flow self-checking process pipeline is in the second preset gas flow range.

5. The negative pressure irrigation method according to claim 1 or 4, wherein The first preset gas flow range is [0L / min, 27L / min); and the second preset gas flow range is [27L / min, 30L / min]; The existing compressed air facility of the hospital can provide flushing gas with a pressure of 0.3MPa-0.5MPa; The pressurized flushing gas can reach 1.6MPa.

6. The negative pressure irrigation method of claim 1, wherein, Further comprising: opening the second control valve (18), the third control valve (16) and the fourth control valve (14), closing the first control valve (13), the fifth control valve (15) and the sixth control valve (17), entering the gas flow self-checking process, measuring by the gas mass flow meter (9) to obtain the gas flow data in the pipeline; if the gas flow data in the pipeline is in [0L / min, 27L / min), opening the first control valve (13), the third control valve (16) and the fourth control valve (14), closing the second control valve (18), the fifth control valve (15) and the sixth control valve (17), introducing the flushing gas of 0.3MPa-0.5MPa provided by the existing compressed air facility of the hospital into the pipeline of the negative pressure suction system for pipeline flushing until the gas flow data in the pipeline of the gas flow self-checking process is in [27L / min, 30L / min].

7. The negative pressure irrigation method of claim 6, wherein, Also comprising: after pipeline flushing, if the gas flow data in the pipeline of the gas flow self-checking process is still in [0L / min, 27L / min), opening the first control valve (13), the fifth control valve (15), the sixth control valve (17) and the third control valve (16), closing the second control valve (18) and the fourth control valve (14), introducing the flushing gas of 1.6MPa after pressurization by the flushing gas pressurizing unit (11) into the pipeline of the negative pressure suction system for pipeline flushing until the gas flow data in the pipeline of the gas flow self-checking process is in [27L / min, 30L / min].

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