CN212132807U

CN212132807U - Negative pressure ward purification air exchange system

Info

Publication number: CN212132807U
Application number: CN202020789309.4U
Authority: CN
Inventors: 李明贤; 张建广; 扬芳; 辛士勇
Original assignee: Beijing Huayi Purifying Scientific Research Institute Co ltd
Current assignee: Beijing Huayi Purifying Scientific Research Institute Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-11
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a negative pressure ward purifying and ventilating system, which comprises a fresh air system and a negative pressure system, wherein the fresh air system comprises a fresh air blower, the negative pressure system comprises a negative pressure machine, an air outlet is arranged at the upper end of one side of a ward door, a plurality of positions are horizontally arranged at the air outlet, an air suction inlet is arranged at the lower part of the opposite side of the ward door, and a plurality of positions are horizontally arranged at the air suction inlet; the negative pressure machine is connected with the air suction port through an air exhaust pipeline; the utility model arranges the air outlet and the air suction inlet in opposite angles in the ward, so that the air in the ward can flow smoothly without dead angles, thereby avoiding the germs remaining in the ward for a long time and reducing the danger of the germ protection work of medical personnel; still set up the primary filter screen in the trunk line, can carry out the prefilter to the air of inhaling in the negative pressure machine, avoid piece, flocculus etc. to block up the filter core, guaranteed exhaust system's normal work, it is high to the purification efficiency of air, also prolonged the life of negative pressure machine filter core.

Description

Negative pressure ward purification air exchange system

Technical Field

The utility model relates to a negative pressure ward technical field especially relates to a negative pressure ward purifies air exchange system.

Background

The negative pressure ward is a ward whose air pressure is lower than that outside the ward, and only fresh air outside can flow into the ward from the circulation of air, and the air polluted by the patient in the ward can not leak out, but can be discharged to a fixed place in time through a special channel, the Chinese utility model (with the publication number of CN2756195) discloses a positive and negative pressure switching ward purification system, which comprises a treatment room, a front room and an air supply/exhaust system, wherein the air exhaust system realizes the negative pressure environment of the ward through a negative pressure machine, then the air supply system sends fresh air into the ward through a fresh air blower to realize the circulation of fresh air in the ward, and the polluted air in the ward is prevented from being discharged to the outside without being treated, so that the safety of people is ensured, but when the purification system is used, the whole negative pressure environment of the ward can be realized, but the air flow has dead corners, namely, air flows from the air outlet to the air outlet, and polluted air at a dead corner far away from the air outlet and the air outlet is difficult to discharge, and air flow generated by medical workers when entering and leaving a ward interferes with the air flow direction in the ward, so that the air at the dead corner flows, the danger of outflow from the ward door is existed, the probability of attachment of germs on the medical workers is increased, and the danger is increased for the germ protection work of the medical workers; and the air outlet needs to be filtered and sterilized to be discharged into the atmosphere, the filter element is a main consumable of the air exhaust system, but the air outlet inevitably sucks large-volume debris, floccule and the like, so that the filter element is easily blocked, the filtering and sterilizing of the air are influenced, and the normal work of the air exhaust system is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide a negative pressure ward purifies air exchange system to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a negative pressure ward purifying and ventilating system comprises a fresh air system and a negative pressure system, wherein the fresh air system comprises a fresh air fan, an air outlet leading into a ward is formed in the fresh air fan, the negative pressure system comprises a negative pressure machine, an air suction opening leading into the ward is formed in the negative pressure machine, the air outlet is formed in the upper end of one side of a ward door, a plurality of air outlets are horizontally arranged, the air suction opening is formed in the lower portion of the opposite side of the ward door, and a plurality of air suction openings are horizontally arranged;

the negative pressure machine passes through exhaust duct with the inlet scoop and is connected, exhaust duct includes the trunk line that links to each other with the negative pressure machine and the horizontal pipeline with trunk line lower part intercommunication, is provided with the secondary pipeline of a plurality of downward and inlet scoop switch-ons on the horizontal pipeline, be provided with the primary strainer in the trunk line in the upside of horizontal pipeline.

Further, be provided with in preliminary filter screen department in the trunk line and brush net mechanism, but brush net mechanism includes two brush boards of horizontal migration's setting both sides about preliminary filter screen, and two brush boards are connected through the pull rod that runs through the U-shaped of trunk line setting, and the cooperation pull rod is provided with the sealing washer on the lateral wall of trunk line.

Further, the inner wall in ward has been seted up in cooperation pull rod and has been held the chamber, and the outside that holds the chamber is provided with flip.

Furthermore, the containing cavity is fixedly provided with leakage-proof cloth, the outer edge of the leakage-proof cloth is connected to the inner wall of the containing cavity in a sealing mode, and the middle of the leakage-proof cloth is fixed on the pull rod in a sealing mode.

Further, the lower extreme of trunk line is provided with the chip removal mouth, and chip removal mouth department is provided with first valve.

Further, the outer wall bottom in the ward is provided with the chip removal chamber in chip removal mouth department, and chip removal chamber department mobilizable medical waste case that is provided with, the upper end cooperation chip removal mouth of medical waste case is provided with the opening, and the opening part is provided with the second valve.

The above technical scheme of the utility model following beneficial effect has: the utility model arranges the air outlet and the air suction inlet in opposite angles in the ward, so that the air in the ward can flow smoothly without dead angles, thereby avoiding the germs remaining in the ward for a long time and reducing the danger of the germ protection work of medical personnel; still set up the primary filter screen in the trunk line, can carry out the prefilter to the air of inhaling in the negative pressure machine, avoid piece, flocculus etc. to block up the filter core, guaranteed exhaust system's normal work, it is high to the purification efficiency of air, also prolonged the life of negative pressure machine filter core.

Drawings

Fig. 1 is a schematic plan view of an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic side view of the embodiment of the present invention showing the pull rod pulled out;

FIG. 4 is a schematic top view of the pull rod of the embodiment of the present invention;

FIG. 5 is a schematic view of the butt joint of a medical waste box and a chip removal opening according to an embodiment of the present invention;

FIG. 6 is a layout view of an exhaust duct according to an embodiment of the present invention;

fig. 7 is the utility model discloses new trend system and negative pressure system's work flow chart.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-7, the negative-pressure ward purifying and ventilating system according to this embodiment includes a fresh air system 1 and a negative pressure system 2, the fresh air system 1 includes a fresh air blower 11, an air outlet 12 leading into a ward is provided on the fresh air blower 11, the negative pressure system 2 includes a negative pressure machine 21, an air suction opening 22 leading into the ward is provided on the negative pressure machine 21, the air outlet 12 is provided at an upper end of one side of a ward door, the air outlet 12 is horizontally arranged at a plurality of positions, the air suction opening 22 is provided at a lower part of an opposite side of the ward door, and the air suction opening 22 is horizontally arranged at a plurality of positions; the air outlet 12 and the air suction opening 22 are arranged diagonally in the ward, so that air in the ward flows smoothly without dead angles, the germs are prevented from being reserved in the ward for a long time, and after the medical care personnel enter the ward, the air in the ward flows to one side of the medical care personnel and points to one side of a sickbed, so that the germs are directly sucked from one side of the sickbed at the air suction opening 22, and the danger of germ protection work of the medical care personnel is further reduced; preferably, the new fan 11 and the negative pressure machine 21 adopt a high-speed fan driven by a rare earth permanent magnet motor, and have the effects of small volume, high efficiency and obvious electricity saving;

the negative pressure machine 21 is connected with the air suction opening 22 through an air exhaust pipeline 3, the air exhaust pipeline 3 comprises a main pipeline 31 connected with the negative pressure machine 21 and a transverse pipeline 32 communicated with the lower part of the main pipeline 31, a plurality of secondary pipelines 33 communicated with the air suction opening 22 downwards are arranged on the transverse pipeline 32, and a primary filter screen 4 is arranged on the upper side of the transverse pipeline 32 in the main pipeline 31; air in the ward is sucked from the suction opening 22, enters the transverse pipeline 32 through the secondary pipeline 33, enters the main pipeline 31 through the transverse pipeline 32, and then enters the negative pressure machine 21 through the primary filter screen 4 upwards; the primary filter screen 4 can carry out primary filtration on air, so that debris, floccules and the like are blocked, and the pressure of the negative pressure machine 21 for treating waste gas is reduced;

preferably, the net brushing mechanism 5 is arranged at the position of the primary filter screen 4 in the main pipeline 31, the net brushing mechanism 5 comprises two brush plates 51 which can be horizontally moved and are arranged at the upper side and the lower side of the primary filter screen 4, the two brush plates 51 are connected through a U-shaped pull rod 52 which is arranged through the main pipeline 31, the two brush plates 51 can be driven to move on the primary filter screen 4 by pulling the pull rod 52, chips and floccules attached to the primary filter screen 4 are brushed away, a sealing ring is arranged on the side wall of the main pipeline 31 in a manner of being matched with the pull rod 52, and gas backflow at the moving position of the pull rod 52 and the side wall of the main pipeline 31 is;

preferably, the inner wall of the ward is provided with an accommodating cavity 61 matched with the pull rod 52, the outer side of the accommodating cavity 61 is provided with a turnover cover 62, and the outer end of the pull rod 52 can be placed in the accommodating cavity 61;

preferably, the containing cavity 61 is fixedly provided with leakage-proof cloth 63, the outer edge of the leakage-proof cloth 63 is hermetically connected to the inner wall of the containing cavity 61, the middle part of the leakage-proof cloth 63 is hermetically fixed on the pull rod 52, when the pull rod 52 is pulled for brushing, the leakage-proof cloth 63 can ensure the isolation between the outer side and the inner side of the cylinder, and further ensure that air in the main pipe 31 does not leak;

preferably, the lower end of the main pipe 31 is provided with a chip removal port 311, a first valve 312 is arranged at the chip removal port 311, the chips and the floccules entering the main pipe 31 or the chips brushed by the brushing mechanism fall into the chip removal port 311, and the main pipe 31 can be discharged by opening the first valve 312;

preferably, a chip removal cavity 64 is arranged at the bottom of the outer wall of the ward at the chip removal port 311, a medical waste box 7 is movably arranged at the chip removal cavity 64, an opening 71 is arranged at the upper end of the medical waste box 7 in a manner of being matched with the chip removal port 311, a second valve 72 is arranged at the opening 71, the opening 71 can be abutted to the chip removal port 311 by the medical waste box 7, so that chips and the like in the main pipeline 31 directly enter the medical waste box 7, and the chips are prevented from being polluted to the outside by germs carried by the chips; preferably, the first valve 312 and the second valve 72 may be gate valves.

Preferably, the negative pressure machine 21 is provided with a sterilizing system comprising a UV sterilizer and an O3 generator (not shown in the figure), which can sterilize the air entering the negative pressure machine 21 and discharge the air into the outside after treatment, thereby controlling the spread of germs; the negative pressure machine 21 is also connected with a differential pressure sensor (not shown in the figure) arranged in the negative pressure ward, the differential pressure sensor outputs the detected difference value between the internal pressure and the external pressure of the ward as a digital signal, and the digital signal is converted into an electric signal by a singlechip to control the starting or the closing of the negative pressure machine 21;

the work flow of the fresh air system 1 and the negative pressure system 2 is as follows: opening a power supply to enable the negative pressure machine 21 to work and start to exhaust air so as to generate slight negative pressure in a room, then starting the new air blower 11 to supply air, wherein the air intake amount of the new air blower 11 is smaller than the air exhaust amount of the negative pressure machine 21, the indoor pressure is continuously reduced until-30 Pa is achieved, the electronic pressure difference sensor outputs a detection value to the single chip microcomputer, the new air blower 11 and the negative pressure machine 21 are controlled to convert the air intake amount and the air exhaust amount into fixed values so as to enable the indoor pressure to tend to be stable, the indoor pressure is changed along with the entrance and exit of personnel or the working error of the air blower, when the indoor pressure is greater than or equal to-5 Pa or less than or equal to-50 Pa, the electronic pressure difference sensor outputs the detection value to the single chip microcomputer, the alarm is controlled to give an alarm, and simultaneously, the negative.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a negative pressure ward purifies air exchange system, includes new trend system and negative pressure system, new trend system includes new trend machine, is provided with the air outlet that accesss to in the ward on the new trend machine, negative pressure system includes the negative pressure machine, is provided with the inlet scoop that accesss to in the ward on the negative pressure machine, its characterized in that: the air outlet is arranged at the upper end of one side of the ward door, a plurality of positions are horizontally arranged on the air outlet, the air suction opening is arranged at the lower part of the opposite side of the ward door, and a plurality of positions are horizontally arranged on the air suction opening;

2. The negative-pressure ward purging and ventilating system of claim 1, wherein: the utility model discloses a filter screen, including the trunk line, be provided with in preliminary filter screen department in the trunk line and brush net mechanism, but brush net mechanism includes two brush boards of horizontal migration's setting both sides about preliminary filter screen, and two brush boards are connected through the pull rod of the U-shaped that runs through the trunk line setting, and the cooperation pull rod is provided with the sealing washer on the lateral wall of trunk line.

3. The negative-pressure ward purging and ventilating system of claim 2, wherein: the cooperation pull rod has been seted up on the interior wall in ward and has been held the chamber, and the outside that holds the chamber is provided with flip.

4. The negative-pressure ward purging and ventilating system of claim 3, wherein: the anti-leakage cloth is fixedly arranged in the accommodating cavity, the outer edge of the anti-leakage cloth is connected to the inner wall of the accommodating cavity in a sealing mode, and the middle of the anti-leakage cloth is fixed on the pull rod in a sealing mode.

5. The negative-pressure ward purging and ventilating system of claim 1, wherein: the lower extreme of trunk line is provided with the chip removal mouth, and chip removal mouth department is provided with first valve.

6. The negative-pressure ward purging and ventilating system of claim 5, wherein: the outer wall bottom in the ward is provided with the chip removal chamber in chip removal mouth department, and chip removal chamber department mobilizable medical waste case that is provided with, the upper end cooperation chip removal mouth of medical waste case is provided with the opening, and the opening part is provided with the second valve.