CN212339557U - Negative pressure isolating device - Google Patents
Negative pressure isolating device Download PDFInfo
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- CN212339557U CN212339557U CN202020535468.1U CN202020535468U CN212339557U CN 212339557 U CN212339557 U CN 212339557U CN 202020535468 U CN202020535468 U CN 202020535468U CN 212339557 U CN212339557 U CN 212339557U
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Abstract
The utility model discloses a negative pressure isolation device.A first air inlet and a first air outlet which are communicated with a first cavity, and a second air inlet and a second air outlet which are communicated with a second cavity are arranged on a machine cabinet; the air supply filter assembly is arranged in the first cavity and used for enabling outdoor air to enter the second cavity through the first air inlet to be filtered and sending the filtered outdoor air into the room through the first air outlet so as to provide clean air for the room; the exhaust filtering assembly is arranged in the second cavity and is used for enabling indoor air to enter the second cavity through the second air inlet to be filtered and to be exhausted out of the room through the second air outlet so as to prevent indoor polluted air from being directly exhausted to pollute the environment; the air supply quantity of the air supply filtering component is smaller than the air exhaust quantity of the air exhaust filtering component, and negative pressure isolation of the negative pressure chamber is achieved. When the negative pressure chamber is applied, the negative pressure chamber is slightly changed, and the negative pressure chamber is convenient to install and use. The air supply function and the air exhaust function are integrated, the structure is compact, and the occupied space is small.
Description
Technical Field
The utility model relates to a ward ventilation system especially relates to a negative pressure isolating device.
Background
Under the condition that infectious diseases spread along with air suddenly appear, negative pressure isolation needs to be carried out on a patient or a suspected patient to avoid cross infection, but in most hospitals or health institutions at present, a negative pressure isolation ward is insufficient, a common ward has the risk of mutual infection of the patient or the suspected patient, and at the moment, the ward needs to be modified to form a negative pressure isolation environment suitable for the patient or the suspected patient.
According to the standard requirements of GBT 35428-.
The existing technical scheme is to rebuild or to carry out engineering transformation on the existing ward, and the transformation also needs the ward to have construction transformation conditions, such as whether the top of the ward has a pipeline arrangement space, etc., a perfect air supply and exhaust system needs to be equipped for the ward, the function of air purification is added, and the pipeline between rooms also needs to be equipped with parts such as air valves, etc., so as to avoid cross infection.
The existing technical scheme can realize the isolation effect on patients or suspected patients, but has large one-time investment; the construction and the reconstruction are complex; the negative pressure isolation ward can only be used after being built and transformed, and the operation cost is high after the epidemic situation passes.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the utility model provides a negative pressure isolating device, it is integrated as an organic whole with air supply function and exhaust function, is convenient for install and dismantle, and is less to the negative pressure room change.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides a negative pressure isolating device, include: the air conditioner comprises a cabinet, a first air inlet, a first air outlet, a second air inlet and a second air outlet, wherein the cabinet is internally provided with a first cavity and a second cavity; the air supply filtering assembly is arranged in the first cavity and used for enabling outdoor air to enter the first cavity through the first air inlet for filtering and sending the outdoor air into a room through the first air outlet; the exhaust filtering assembly is arranged in the second cavity and used for enabling indoor air to enter the second cavity through the second air inlet to be filtered and exhausted out of the room through the second air outlet; the air supply amount of the air supply filtering component is smaller than the air exhaust amount of the air exhaust filtering component, so that a negative pressure chamber is formed indoors.
In some embodiments of the present application, each of the air supply filtering assembly and the air exhaust filtering assembly includes a high efficiency filter, a fan, and an air box, wherein the fan is fixedly disposed in the air box, and the air box is fixedly disposed on the cabinet through a bracket assembly; in the first cavity, the high-efficiency filter is over against the first air outlet; in the second cavity, the high-efficiency filter is over against the second air outlet.
In some embodiments of the present application, a connecting member is disposed in each of the first cavity and the second cavity, and the high efficiency filter is disposed between the connecting member and the bellows; in the first cavity, the connecting piece is arranged around the periphery of the first air outlet, and a first buffer cavity is formed between the first air outlet and the high-efficiency filter; in the second cavity, the connecting piece is arranged around the periphery of the second air outlet, and a second buffer cavity is formed between the second air outlet and the high-efficiency filter.
In some embodiments of the present application, the bracket component includes the link that sets up from top to bottom the multiunit, the one end of link with the connecting piece is connected, the other end with bellows connect, high efficiency filter be spacing in the connecting piece with between the bellows.
In some embodiments of the present application, the connection frame includes a first connection frame and a second connection frame detachably connected, the first connection frame is connected to the connection member, and the first connection frame extends from the connection member to the bellows along a horizontal direction; one side of the bellows close to the high-efficiency filter is provided with an outward-turned flange, the first connecting frame and the second connecting frame are connected, the bellows are limited between the second connecting frames which are arranged up and down, and the flange of the bellows and the side wall of the second connecting frame abut against and limit the horizontal movement of the bellows.
In some embodiments of the present application, the first connection frame and the second connection frame are fixedly connected by bolts.
In some embodiments of the present application, the left and right sides of the connecting member are respectively provided with an extending portion, and the extending portions and the high efficiency filter are abutted.
In some embodiments of the present application, one side of the connecting piece, which is close to the high efficiency filter, is provided with an inward-turned flange, and the flange of the connecting piece is abutted to the high efficiency filter.
In some embodiments of the present application, a coarse filter is disposed at the first air inlet.
In some embodiments of the present application, the apparatus further comprises: the air supply pipeline is used for connecting the first air outlet and an air inlet of the negative pressure chamber arranged on the negative pressure chamber; the air exhaust pipeline is used for connecting the second air inlet and a negative pressure chamber air outlet arranged on the negative pressure chamber; the negative pressure chamber air inlet and the negative pressure chamber air outlet are arranged in an oblique diagonal manner, and the negative pressure chamber air inlet is higher than the negative pressure chamber air outlet.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
in the negative pressure isolating device disclosed in the application, the air supply function and the air exhaust function are integrated into a whole, and the device is compact in structure and small in occupied space.
The air supply quantity of the air supply filtering component is smaller than the air exhaust quantity of the air exhaust filtering component, so that the indoor environment is in a negative pressure environment, and indoor negative pressure isolation is realized.
When the negative pressure isolation device is applied, only the negative pressure chamber air inlet and the negative pressure chamber air outlet need to be formed in the wall of a space (such as a ward) needing a negative pressure environment, and then the negative pressure isolation device is connected into the space through a pipeline, so that the change of the negative pressure chamber is very small, and the negative pressure chamber is not required to be provided with a relatively perfect air supply and exhaust system.
When the negative pressure chamber does not need a negative pressure environment, the negative pressure isolating device is closed, or a communicating pipeline between the negative pressure isolating device and the negative pressure chamber is detached.
The negative pressure isolation device has strong universality, can be detached and replaced between different negative pressure chambers, and can greatly reduce the use cost of hospitals.
The negative pressure isolation device is placed outside the negative pressure chamber, and the space in the negative pressure chamber is not occupied.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of an embodiment of the negative pressure isolation device of the present invention;
fig. 2 is a schematic structural view of an embodiment of the negative pressure isolation device of the present invention from another perspective;
FIG. 3 is a cross-sectional view of an embodiment of the negative pressure isolation device of the present invention;
FIG. 4 is a schematic structural view of the negative pressure isolating device of the present invention with a part of the cabinet omitted;
FIG. 5 is a schematic view of the structure of FIG. 4 with the air inlet channel and the baffle omitted;
fig. 6 is a schematic structural view of the negative pressure isolation device of the present invention communicating with the negative pressure chamber.
Reference numerals:
1-negative pressure isolation device;
2-negative pressure chamber, 21-negative pressure chamber air inlet, 22-negative pressure chamber air outlet;
100-cabinet, 110-first cavity, 111-first air inlet, 112-first air outlet, 120-second cavity, 121-second air inlet, 122-second air outlet, 130-air inlet channel, 140-accommodating cavity, 150-partition plate, 160-baffle plate;
200-a blast filter assembly, 210-a first high-efficiency filter, 220-a first bellows, 221-a flanging of the first bellows, 230-a first fan, 231-a first motor, 232-a first induced draft ring, 240-a first connecting piece, 241-a flanging of the first connecting piece, 242-a first extension part, 250-a first buffer cavity, 260-a coarse-efficiency filter, 270-a first support frame;
300-an exhaust filtering component, 310-a second high-efficiency filter, 320-a second bellows, 321-a flanging of the second bellows, 330-a second fan, 331-a second motor, 332-a second induced draft ring, 340-a second connecting piece, 341-a flanging of the second connecting piece, 342-a second extending part, 350-a second buffer cavity and 360-a second supporting frame;
400-air supply pipeline;
500-a vent line;
600-bracket assembly, 610-attachment bracket, 611-first attachment bracket, 612-second attachment bracket;
700-a manipulation screen;
800-grating.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The negative pressure isolation device 1 in the embodiment is communicated with the negative pressure chamber 2 and is used for filtering air flowing into the negative pressure chamber 2 so as to provide clean air for the negative pressure chamber 2; meanwhile, the air flowing out of the negative pressure chamber 2 is filtered, so that the polluted air in the negative pressure chamber 2 is prevented from being directly discharged to pollute the atmosphere. The negative pressure isolation device 1 can enable the negative pressure chamber 2 to be in a negative pressure state, and realize negative pressure isolation of the negative pressure chamber 2. The negative pressure chamber can be a ward, an ambulance and the like which need a negative pressure environment.
Referring to fig. 1 to 6, the negative pressure isolation device 1 includes a cabinet 100, an air supply pipeline 400, an exhaust pipeline 500, an air supply filter assembly 200, an exhaust filter assembly 300, and the like.
The cabinet 100 forms a housing of the negative pressure isolation apparatus 1, and a partition plate 150 is disposed in the cabinet 100, wherein the partition plate 150 divides an inner space of the cabinet 100 into a first cavity 110 and a second cavity 120 which are independent of each other. The cabinet 100 is provided with a first air inlet 111 and a first air outlet 112 communicated with the first cavity 110, and a second air inlet 121 and a second air outlet 122 communicated with the second cavity 120. The cabinet 100 is placed outside the negative pressure chamber 2.
The air supply duct 400 is used to communicate the first air outlet 112 with the negative pressure chamber air inlet 21 provided in the negative pressure chamber 2.
The exhaust duct 500 is used to communicate the second air inlet 121 and the negative pressure chamber air outlet 22 disposed on the negative pressure chamber 2.
The air supply filter assembly 200 is disposed in the first cavity 110, and is configured to filter the outside air and send the air into the negative pressure chamber 2 through the air supply pipeline 400. Specifically, the external air enters the first cavity 110 through the first air inlet 111 under the suction action of the air supply filter assembly 200, is filtered by the air supply filter assembly 200, and then enters the negative pressure chamber 2 through the air supply pipeline 400 under the blowing action of the air supply filter assembly 200, so as to provide clean air to the negative pressure chamber 2.
The exhaust air filtering assembly 300 is disposed in the second chamber 120, and is used for filtering and exhausting air in the negative pressure chamber 2. Specifically, the contaminated air in the negative pressure chamber 2 enters the second cavity 120 through the exhaust duct 500 under the suction action of the exhaust air filtering assembly 300, and the clean air filtered by the exhaust air filtering assembly 300 is then exhausted to the atmosphere through the second air outlet 122 under the blowing action of the exhaust air filtering assembly 300.
The air supply amount of the air supply filter assembly 200 is smaller than the air exhaust amount of the air exhaust filter assembly 300, so that the negative pressure chamber 2 is in a negative pressure environment, and negative pressure isolation of the negative pressure chamber 2 is realized.
When the negative pressure isolation device 1 is applied, only the negative pressure chamber air inlet 21 and the negative pressure chamber air outlet 22 are required to be arranged on the wall (such as a ward) of the existing negative pressure chamber 2, and then the negative pressure isolation device 1 is connected into the negative pressure chamber 2 through a pipeline, so that the negative pressure chamber 2 is changed very little, and the negative pressure chamber 2 is not required to be provided with a relatively perfect air supply and exhaust system.
When the negative pressure chamber 2 does not need a negative pressure environment, the negative pressure isolation device 1 is closed, or a communication pipeline between the negative pressure isolation device 1 and the negative pressure chamber 2 is detached.
The negative pressure isolation device 1 has strong universality, can be detached and replaced between different negative pressure chambers, and can greatly reduce the use cost of hospitals.
The negative pressure isolation device 1 integrates the air supply function and the air exhaust function into a whole structure, the device has a compact structure and small occupied space, and the negative pressure isolation device 1 is placed outside the negative pressure chamber 2 and cannot occupy the space in the negative pressure chamber 2.
In some embodiments of the present application, the first cavity 110 and the second cavity 120 are distributed vertically, and the first cavity 110 is located above the second cavity 120, so as to further reduce the occupied space of the negative pressure isolation device 1.
In some embodiments of the present application, referring to fig. 3 and 4, a baffle 160 is disposed at an upper portion of the cabinet 100, and a receiving cavity 140 is formed between the baffle 160 and a top wall of the cabinet 100, where the receiving cavity 140 is used for installing a console screen 700, an electronic control board, and other related electronic devices. The top wall of the cabinet 100 is provided with a first air inlet 111, an air inlet channel 130 is arranged in the installation cavity 140, and the first air inlet 111 and the first cavity 110 are communicated through the air inlet channel 130.
In some embodiments of the present application, the structure of the air supply filter assembly 200 is the same as that of the air exhaust filter assembly 300, and specifically, the air supply filter assembly 200 and the air exhaust filter assembly 300 respectively include a high efficiency filter, a fan and a bellows, the fan is fixedly disposed in the bellows, and the bellows is fixedly disposed on the cabinet 100 through the bracket assembly 600. For ease of description, the components of the supply air filter assembly 200 are labeled as a first high efficiency filter 210, a first fan 230, and a first bellows 220, and the components of the discharge air filter assembly 300 are labeled as a second high efficiency filter 310, a second fan 330, and a second bellows 320.
In the first cavity 110, the first high efficiency filter 210 faces the first air outlet 112, and the outside air entering the first cavity 110 is filtered by the first high efficiency filter 210 to become clean air, and then enters the negative pressure chamber 2 through the first air outlet 112 and the air supply pipeline 400.
In the second cavity 120, the second high efficiency filter 310 faces the second air outlet 122, and the polluted air flowing out of the negative pressure chamber 2 through the exhaust pipeline 500 is filtered by the second high efficiency filter 310 to become clean air, and then is exhausted to the atmosphere through the second air outlet 122.
In some embodiments of the present application, the second air outlet 122 is provided with a grille 800, so as to prevent the foreign object from entering the second cavity 120, and meanwhile, the grille 800 also plays a role in guiding air.
The mounting and fixing structures of the supply air filter assembly 200 and the exhaust air filter assembly 300 are identical, and the supply air filter assembly 200 is taken as an example for detailed description, related parts in the supply air filter assembly 200 are marked as "first", related parts in the exhaust air filter assembly 300 are marked as "second", and the related mounting structure of the exhaust air filter assembly 300 can refer to the reference numerals and the drawings.
In some embodiments of the present application, referring to fig. 3, a first support frame 270 is disposed in the first wind box 220, the first support frame 270 extends in a vertical direction, the first motor 231 of the first fan 230 is fixedly connected to the first support frame 270, a first opening (not labeled) is disposed on the first wind box 220, and the first wind-guiding ring 232 of the first fan 230 is fixedly connected to the first opening, so as to achieve the fixed installation of the first fan 230 in the first wind box 220.
In some embodiments of the present application, referring to fig. 3 and 5, a connection is provided in each of the first chamber 110 and the second chamber 120, and the connection in the first chamber 110 is designated as a first connection 240, the connection in the second chamber 120 is designated as a second connection 340, the first high efficiency filter 210 is provided between the first connection 240 and the first bellows 220, and the second high efficiency filter 310 is provided between the second connection 340 and the second bellows 320.
The first connector 240 has the same contour shape as that of the first high efficiency filter 210 to facilitate the installation of the first high efficiency filter 210. In the first cavity 110, the first connecting member 240 surrounds the first outlet 112, and a first buffer chamber 250 is formed between the first outlet 112 and the first high efficiency filter 210, so as to facilitate the gas circulation.
The first connecting member 240, the first high efficiency filter 210, and the first bellows 220 form an air flow channel to sufficiently isolate the filtered clean air from the unfiltered air in the first cavity 110, so as to ensure that the air flowing to the negative pressure chamber 2 through the first air outlet 112 is clean air.
The second connector 340 has the same contour shape as that of the second high efficiency filter 310 to facilitate the installation of the second high efficiency filter 310. In the second cavity 120, the second connecting member 340 surrounds the second outlet 122 to form a second buffer cavity 350 between the second outlet 122 and the second high efficiency filter 310, so as to facilitate the air circulation.
The polluted air flowing from the exhaust duct 500 is fully isolated from the filtered clean air in the second chamber 120 by the air circulation channel formed by the second connecting member 340, the second high efficiency filter 310 and the second air box 320, so as to ensure that the air flowing to the outside atmosphere through the second air outlet 122 is clean air.
In some embodiments of the present application, the fixed mounting of the first bellows 220 in the first chamber 110 is achieved by a bracket assembly 600. Specifically, the bracket assembly 600 includes a plurality of sets of connecting frames 610 disposed up and down, one end of the connecting frame 610 is fixedly connected to the first connecting member 240, and the other end is connected to the first bellows 220. In this embodiment, the bracket assembly 600 includes two sets of connecting brackets 610 disposed symmetrically up and down.
In some embodiments of the present application, the first connecting member 240 and the inner wall of the cabinet 100, and the connecting frame 610 and the first connecting member 240 are welded and fixed, so that the installation is convenient, and the structure is reliable.
In some embodiments of the present application, with continued reference to fig. 3 and 5, the connection frame 610 includes a first connection frame 611 and a second connection frame 612 detachably connected, the first connection frame 611 is welded to the first connection member 240, and the first connection frame 611 extends from the first connection member 240 to the first bellows 220 side in the horizontal direction. One side of the first bellows 220 close to the first high-efficiency filter 210 is provided with an outward-turned flange 221, after the first connecting frame 611 and the second connecting frame 612 are fixedly connected, the first bellows 220 is limited between the second connecting frames 612 which are arranged up and down, the first bellows 220 is limited in the vertical direction, meanwhile, the flange 221 of the first bellows abuts against the second connecting frame 612, the first bellows 220 is limited in the horizontal direction, and therefore the first bellows 220 is fixedly mounted.
Meanwhile, after the first connecting frame 611 and the second connecting frame 612 are fixedly connected, the first high efficiency filter 210 is extruded and limited between the first connecting member 240 and the first bellows 220, so that the first high efficiency filter 210 is fixedly mounted.
Before installation, the first connecting piece 240 is welded and fixed to the inner wall of the cabinet 100, and the first connecting frame 611 is welded and fixed to the upper and lower sides of the first connecting piece 240; then, the first high efficiency filter 210 is placed between the first connecting frames 611 arranged up and down, and the first high efficiency filter 210 is close to the first connecting piece 240; fixedly mounting a first fan 230 into the first bellows 220, and then placing the first bellows 220 outside the first high efficiency filter 210 and attaching; at this time, the second connecting frame 612 is installed again, the second connecting frame 612 is fixed with the first connecting frame 611, and at this time, the second connecting frame 612 abuts against the flange 221 of the first bellows; after the first connecting frame 611 and the second connecting frame 612 are fixed in place, the first bellows 220 is limited between the second connecting frames 612 arranged up and down, and the installation and fixation of the first bellows 220 are completed; meanwhile, the first bellows 220 provides the first high efficiency filter 210 with a certain extrusion force, and the first high efficiency filter 210 is extruded and limited between the first connecting member 240 and the first bellows 220, so that the first high efficiency filter 210 is fixedly installed.
When the first high efficiency filter 210 needs to be replaced, the first connection frame 612 and the second connection frame 612 are released from the fixed relationship, so that the first bellows 220 and the first high efficiency filter 210 can be detached, and the detachment and the installation are convenient.
In some embodiments of the present application, the first connecting frame 612 and the second connecting frame 612 are fixedly connected by bolts, so that the assembly and the disassembly are convenient.
In some embodiments of the present application, with continued reference to fig. 3 and fig. 5, the left and right sides of the first connecting element 240 are respectively provided with a first extending portion 242, the first extending portion 242 is a sheet-shaped structure, and the first extending portion 242 abuts against the first high-efficiency filter 210 to limit the first high-efficiency filter 210.
In some embodiments of the present application, an inward-turned flange 241 is disposed on one side of the first connecting member 240 close to the first high efficiency filter 210, and the flange 241 of the first connecting member abuts against the first high efficiency filter 210, so as to improve the reliability of the installation of the first high efficiency filter 210.
In some embodiments of the present application, referring to fig. 1 to 3, a coarse filter 260 is disposed at the first air inlet 111 to perform a preliminary filtering on air flowing into the first cavity 110 from the outside, which is helpful to improve a filtering effect.
In some embodiments of the present application, referring to fig. 6, the negative pressure chamber air inlet 21 and the negative pressure chamber air outlet 22 are diagonally arranged, and the negative pressure chamber air inlet 21 is higher than the negative pressure chamber air outlet 22, which is beneficial to realizing the unidirectional flow of air in the negative pressure chamber, and improving the negative pressure isolation effect in the negative pressure chamber 2.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A negative pressure isolation device, comprising:
the air conditioner comprises a cabinet, a first air inlet, a first air outlet, a second air inlet and a second air outlet, wherein the cabinet is internally provided with a first cavity and a second cavity;
the air supply filtering assembly is arranged in the first cavity and used for enabling outdoor air to enter the first cavity through the first air inlet for filtering and sending the outdoor air into a room through the first air outlet;
the exhaust filtering assembly is arranged in the second cavity and used for enabling indoor air to enter the second cavity through the second air inlet to be filtered and exhausted out of the room through the second air outlet;
the air supply amount of the air supply filtering component is smaller than the air exhaust amount of the air exhaust filtering component, so that a negative pressure chamber is formed indoors.
2. The negative pressure isolation device of claim 1,
the air supply filtering assembly and the air exhaust filtering assembly respectively comprise a high-efficiency filter, a fan and an air box, the fan is fixedly arranged in the air box, and the air box is fixedly arranged on the machine cabinet through a bracket assembly;
in the first cavity, the high-efficiency filter is over against the first air outlet;
in the second cavity, the high-efficiency filter is over against the second air outlet.
3. The negative pressure isolation device of claim 2,
the first cavity and the second cavity are respectively internally provided with a connecting piece, and the high-efficiency filter is arranged between the connecting piece and the air box;
in the first cavity, the connecting piece is arranged around the periphery of the first air outlet, and a first buffer cavity is formed between the first air outlet and the high-efficiency filter;
in the second cavity, the connecting piece is arranged around the periphery of the second air outlet, and a second buffer cavity is formed between the second air outlet and the high-efficiency filter.
4. The negative pressure isolation device of claim 3,
the bracket component comprises a plurality of groups of connecting frames which are arranged up and down, one end of each connecting frame is connected with the connecting piece, the other end of each connecting frame is connected with the air box, and the high-efficiency filter is limited between the connecting piece and the air box.
5. The negative pressure isolation device of claim 4,
the connecting frame comprises a first connecting frame and a second connecting frame which are detachably connected, the first connecting frame is connected with the connecting piece, and the first connecting frame extends to the air box from the connecting piece along the horizontal direction;
one side of the bellows close to the high-efficiency filter is provided with an outward-turned flange, the first connecting frame and the second connecting frame are connected, the bellows are limited between the second connecting frames which are arranged up and down, and the flange of the bellows and the side wall of the second connecting frame abut against and limit the horizontal movement of the bellows.
6. The negative pressure isolation device of claim 5,
the first connecting frame and the second connecting frame are fixedly connected through bolts.
7. The negative pressure isolation device of claim 4,
the left side and the right side of the connecting piece are respectively provided with an extending part, and the extending parts are abutted to the high-efficiency filter.
8. The negative pressure isolation device of claim 4,
one side of the connecting piece, which is close to the high-efficiency filter, is provided with an inward-turned flanging, and the flanging of the connecting piece is abutted against the high-efficiency filter.
9. The negative pressure isolation device of any one of claims 1 to 8,
a coarse filter is arranged at the first air inlet.
10. The negative pressure isolation device of any one of claims 1-8, further comprising:
the air supply pipeline is used for connecting the first air outlet and an air inlet of the negative pressure chamber arranged on the negative pressure chamber;
the air exhaust pipeline is used for connecting the second air inlet and a negative pressure chamber air outlet arranged on the negative pressure chamber;
the negative pressure chamber air inlet and the negative pressure chamber air outlet are arranged in an oblique diagonal manner, and the negative pressure chamber air inlet is higher than the negative pressure chamber air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020535468.1U CN212339557U (en) | 2020-04-13 | 2020-04-13 | Negative pressure isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020535468.1U CN212339557U (en) | 2020-04-13 | 2020-04-13 | Negative pressure isolating device |
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| Publication Number | Publication Date |
|---|---|
| CN212339557U true CN212339557U (en) | 2021-01-12 |
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|---|---|---|---|
| CN202020535468.1U Active CN212339557U (en) | 2020-04-13 | 2020-04-13 | Negative pressure isolating device |
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| CN (1) | CN212339557U (en) |
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