CN114877465A

CN114877465A - Air purification new trend device with detect function

Info

Publication number: CN114877465A
Application number: CN202210798471.6A
Authority: CN
Inventors: 尹全喜; 方昌江
Original assignee: Guangdong Yifil Purification Technology Co ltd
Current assignee: Guangdong Yifil Purification Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-08-09
Anticipated expiration: 2042-07-08
Also published as: CN114877465B

Abstract

The invention discloses an air purification fresh air device with a detection function, which belongs to the technical field of air purification, and comprises a box body, an air pump and a first pipeline, wherein the air pump and the first pipeline are connected in the box body, and the air purification fresh air device with the detection function also comprises: the filter box is fixedly connected in the box body, one end of the first pipeline is communicated with the filter box, the input end of the air pump is communicated with the filter box through a second pipeline, a filter plate is arranged in the filter box, and the first pipeline and the second pipeline are respectively positioned on two sides of the filter plate; the detection cylinder is fixedly connected in the box body; when needs ventilate in to the room, pass through the filter with the outside air through the air pump and filter the back and get into in detecting a section of thick bamboo, start the detector simultaneously, the detector sees through the transparent plate and detects the particle size and how much in the air, and then judges the air quality, and the air passes through in the fourth pipeline gets into the room at last, realizes the purpose of ventilation.

Description

Air purification new trend device with detect function

Technical Field

The invention relates to the technical field of air purification, in particular to an air purification fresh air device with a detection function.

Background

In recent years, along with the rapid development of economy in China, the living standard of people is increasingly improved, the requirement on the living environment is also higher, in the household life, in order to pursue a healthy living environment, the ventilation property in a room needs to be ensured, and because the building height is higher and the building density is denser at present, the outside air mobility is greatly reduced compared with the former, therefore, in order to ensure the ventilation property of the room, many families are provided with air fresh air devices to improve the air ventilation property in the room.

Because air pollution is more and more serious in recent years, dust particles in the air are more and more, and people's health is greatly endangered, however, current air new trend device in the market does not have the detection function at present, and in the in-process of ventilating, can't detect the air entering room at every moment, how much of dust particles in the air, and then can't effectively protect user's health safety.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the amount of dust particles in air cannot be detected constantly when the air enters a room in the ventilation process, and the like, and provides an air purification fresh air device with a detection function.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an air purification new trend device with detect function, includes the box, connects air pump and first pipeline in the box, still includes: the filter box is fixedly connected in the box body, one end of the first pipeline is communicated with the filter box, the input end of the air pump is communicated with the filter box through a second pipeline, a filter plate is arranged in the filter box, and the first pipeline and the second pipeline are respectively positioned on two sides of the filter plate; the output end of the air pump is communicated with the detection cylinder through a third pipeline, and a fourth pipeline is further arranged on the detection cylinder; a detector and a transparent plate are arranged in the detection cylinder, and the detector is separated from the third pipeline and the fourth pipeline through the transparent plate.

In order to prevent dust from adhering to the surface of the transparent plate, it is preferable that the transparent plate further comprises: the motor is fixedly connected in the box body, the output end of the motor is fixedly connected with a connecting plate, and a dust removing plate is fixedly connected to the connecting plate; the dust removal plate can enter the detection cylinder and is attached to the transparent plate; the isolation cover is fixedly connected to the side wall of the detection cylinder.

In order to remove dust on the surface of the dust removal plate, it is preferable that the dust removal device further comprises: the spacing strip is fixedly connected to the inner wall of the isolation cover, a frame can be inserted into the side wall of the isolation cover, and the frame is clamped with the spacing strip; the erasing plate is fixedly connected to the frame and can be attached to the surface of the dust removing plate.

In order to improve the detection stability, it is preferable that the method further comprises: the second control cavity is fixedly connected in the box body, and a second interception block is connected in the second control cavity in a sliding manner; one end of the fourth pipeline, which is far away from the detection cylinder, is communicated with the second control cavity, and the ninth pipeline is connected to the second control cavity; a rotating shaft is rotatably connected in the box body, reciprocating threads are arranged at one end of the rotating shaft extending into the second control cavity, and the second intercepting block is in threaded connection with the reciprocating threads; the output end of the motor is connected with the rotating shaft through a belt.

In order to improve the removal of dust on the surface of the dust removal plate, the dust removal device preferably further comprises: the spray head is fixedly connected to the inner wall of the bottom of the isolation cover and communicated with the third pipeline through a fifth pipeline.

In order to discharge dust conveniently, preferably, an air outlet is formed in one end, away from the detection cylinder, of the isolation cover, and a sixth pipeline is connected to the air outlet.

In order to remove dust on the erasing plate, preferably, an air injection plate is arranged on the inner wall of the top of the isolation hood, the air injection plate is positioned right above the erasing plate, and an eighth pipeline is arranged on the air injection plate; the box body is also internally provided with a closure mechanism which is respectively communicated with the eighth pipeline and the third pipeline; the intercepting mechanism is used for controlling the on-off of the airflow.

Preferably, the shut-off mechanism includes: the first control cavity is fixed in the box body and communicated with the third pipeline through a seventh pipeline, and one end, far away from the gas injection plate, of the eighth pipeline is communicated with the first control cavity; the first cutoff block is connected in the first control cavity in a sliding mode, the side wall of the first cutoff block is fixedly connected with a connecting rod, and the connecting rod extends out of the first control cavity; the cylinder is fixed in the box, the reciprocating plate is connected in the box in a sliding mode, the output end of the cylinder is fixedly connected with the reciprocating plate, and one end, extending out of the first control cavity, of the connecting rod is fixedly connected with the reciprocating plate.

For the convenience of maintenance, it is preferred that the rose box bottom is equipped with first side door, it is equipped with the second side door to detect bobbin base portion.

Preferably, the device also comprises a fixing plate, wherein the fixing plate is connected with the box body through a connecting bolt; and the fixing plate is provided with a connecting hole.

Compared with the prior art, the invention provides an air purification fresh air device with a detection function, which has the following beneficial effects:

1. this air purification new trend device with detect function when needs ventilate in to the room, through the air pump with the outside air through the filter after get into detect a section of thick bamboo, start the detector simultaneously, the detector sees through the transparent plate and detects the particle size and how much in the air, and then judges the air quality, and the purpose that ventilates is realized in the air gets into the room through the fourth pipeline at last.

2. This air purification new trend device with detect function, at the ventilation in-process, rotates through motor drive dust removal board, when the dust removal board rotates in detecting the section of thick bamboo, the dust removal board upper surface contacts with the transparent plate lower surface, erases, prevents long-time during operation, and transparent plate surface adhesion one deck dust influences the reliability that the detector detected data.

3. This air purification new trend device with detect function, when getting rid of the dust from the dust removal board surface through the shower nozzle with erase the board, this moment, the dust can be detained in the cage, this moment, because it is equipped with logical groove to detect a section of thick bamboo lateral wall, the air can get into the cage through leading to the groove in, then in getting into the sixth pipeline through the gas vent, the discharge is external, at this moment, under the effect of air current, the dust also can be brought into the external world in the lump.

Drawings

FIG. 1 is a schematic structural diagram of an air purifying and refreshing apparatus with a detection function according to the present invention;

FIG. 2 is an enlarged view of a portion A of the air purifying and refreshing apparatus with detecting function in FIG. 1 according to the present invention;

FIG. 3 is a schematic structural diagram of a frame of an air purifying and refreshing apparatus with a detecting function according to the present invention;

FIG. 4 is a schematic structural diagram of a dust-removing plate of an air purifying and fresh air device with a detection function according to the present invention;

FIG. 5 is a schematic structural diagram of a second control chamber of an air purifying and fresh air device with a detection function according to the present invention;

fig. 6 is a schematic structural diagram of an air-jet plate of an air purification fresh air device with a detection function according to the present invention.

In the figure: 1. a box body; 101. a fixing plate; 102. connecting holes; 103. a connecting bolt; 2. a first conduit; 201. an air pump; 202. a filter box; 203. a filter plate; 204. a second conduit; 205. a third pipeline; 3. a detection cylinder; 301. a detector; 302. a transparent plate; 303. a fourth conduit; 4. a motor; 401. a connecting plate; 402. a dust removal plate; 403. an isolation cover; 404. a spray head; 405. a fifth pipeline; 5. a limiting strip; 501. a frame; 502. erasing the plate; 503. an exhaust port; 504. a sixth pipeline; 6. a seventh pipe; 601. a first control chamber; 602. an eighth conduit; 603. an air jet plate; 7. a connecting rod; 701. a first cutoff block; 702. a cylinder; 703. a reciprocating plate; 8. a second control chamber; 801. a second cutoff block; 802. a rotating shaft; 803. reciprocating screw threads; 804. a belt; 805. a ninth conduit; 9. a first side door; 901. a second side door.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the 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.

Example 1:

referring to fig. 1-6, an air purification new trend device with detect function, includes box 1, connects air pump 201 and first pipeline 2 in box 1, still includes: the filter box 202 of fixed connection in box 1, the one end of first pipeline 2 is linked together with filter box 202, the other end of first pipeline 2 communicates with each other with the external world, the input of air pump 201 is linked together with filter box 202 through second pipeline 204, be equipped with filter 203 in the filter box 202, first pipeline 2 is located the both sides of filter 203 respectively with second pipeline 204, fixed connection is at the detection section of thick bamboo 3 in box 1, the output of air pump 201 is linked together with detection section of thick bamboo 3 through third pipeline 205, still be equipped with fourth pipeline 303 on the detection section of thick bamboo 3, the fourth pipeline 303 other end communicates with each other in with the room.

The detection tube 3 is internally provided with a detector 301 and a transparent plate 302, the detector 301 is separated from the third pipeline 205 and the fourth pipeline 303 through the transparent plate 302, the transparent plate 302 is made of glass or plastic, the detection tube 3 is internally provided with a light emitting source, such as an LDE lamp, the light emitting source is arranged behind the detection head of the detector 301, and the direct irradiation of light rays is avoided.

The detector 301 is mainly used for receiving light rays of a light source arranged opposite to the detector and penetrating air particles, if the detector 301 adopts a laser principle, the light source emits laser light to penetrate air passing through the detection cylinder 3, and if the detector 301 adopts an infrared principle, the light source emits infrared light rays to penetrate air passing through the detection cylinder 3.

When needing to ventilate to the room in, start air pump 201, in inhaling filter tank 202 through first pipeline 2 with the outside air, then in filtering through filter 203 back entering detection section of thick bamboo 3 through second pipeline 204 and third pipeline 205, start detector 301 simultaneously, detector 301 passes through transparent plate 302 and detects the particle size and how much in the air, and then judges the air quality, and the air passes through in the fourth pipeline 303 gets into the room at last, realizes the purpose of ventilating.

As shown in fig. 1-5, the overall solution is optimized to prevent dust from adhering to the surface of the transparent plate 302.

Further comprising: the motor 4 is fixedly connected in the box body 1, the output end of the motor 4 is fixedly connected with a connecting plate 401, and a dust removing plate 402 is fixedly connected on the connecting plate 401;

the dust removing plate 402 can enter the detection cylinder 3 and is attached to the transparent plate 302; the isolation cover 403 is fixedly connected to the side wall of the detection cylinder 3, a through groove is formed in the side wall of the detection cylinder 3, and the dust removal plate 402 enters the detection cylinder 3 through the through groove.

The detection cylinder 3 is designed in a circular arc shape, and the circle center is collinear with the circle center of the output end of the motor 4.

In the ventilation process, the motor 4 is started to drive the dust removing plate 402 to rotate, when the dust removing plate 402 rotates into the detection cylinder 3, the upper surface of the dust removing plate 402 is in contact with the lower surface of the transparent plate 302 to be erased, and the problem that the reliability of detection data of the detector 301 is influenced due to the fact that a layer of dust adheres to the surface of the transparent plate 302 when the dust removing plate is in long-time operation is prevented.

As shown in fig. 1 to 5, the overall technical solution is optimized to improve the effect of removing dust attached to the surface of the transparent plate 302.

Further comprising: the limiting strip 5 is fixedly connected to the inner wall of the isolation cover 403, the frame 501 can be inserted into the side wall of the isolation cover 403, the frame 501 is clamped with the limiting strip 5, namely, the side wall of the frame 501 is provided with a groove, the frame 501 slides on the limiting strip 5 through the groove, the erasing plate 502 is fixedly connected to the frame 501, and the erasing plate 502 can be attached to the surface of the dust removing plate 402.

After the dust removing plate 402 contacts the transparent plate 302 and is rotated out of the detection cylinder 3, in the rotating process, one surface of the dust removing plate 402 contacting the transparent plate 302 contacts the erasing plate 502, and dust attached to the surface of the dust removing plate 402 is removed through the erasing plate 502, so that the transparent plate 302 can be conveniently cleaned next time.

The eraser plate 502 is inserted into the isolation cover 403 through the frame 501, and after a period of use, the eraser plate 502 can be taken out for cleaning or replacing with a new eraser plate 502.

As shown in fig. 1, 3, 4, and 5, the overall technical solution is optimized to improve the detection stability of the detector 301.

Further comprising: the second control cavity 8 is fixedly connected in the box body 1, a second interception block 801 is connected in the second control cavity 8 in a sliding mode, the section of the inner wall of the second control cavity 8 is non-circular, the second interception block 801 is attached to the inner wall of the second control cavity 8, one end, far away from the detection cylinder 3, of the fourth pipeline 303 is communicated with the second control cavity 8, a ninth pipeline 805 is connected to the second control cavity 8, and one end, far away from the second control cavity 8, of the ninth pipeline 805 is communicated with the room.

A rotating shaft 802 is rotatably connected in the box body 1, a reciprocating thread 803 is arranged at one end of the rotating shaft 802 extending into the second control cavity 8, and a second flow intercepting block 801 is in threaded connection with the reciprocating thread 803; the output end of the motor 4 is connected with the rotating shaft 802 through a belt 804.

In the process of driving the dust removing plate 402 to rotate, the motor 4 synchronously drives the rotating shaft 802 to rotate through the belt 804, then under the action of the reciprocating screw 803, the second interception block 801 reciprocates, the stopping and the conducting between the fourth pipeline 303 and the second control cavity 8 are controlled through the reciprocating movement of the second interception block 801, when the fourth pipeline 303 and the second control cavity 8 are stopped, the air in the detection cylinder 3 is increased, the detection of the detector 301 is more convenient, after the detection is finished, the fourth pipeline 303 and the second control cavity 8 are conducted, and the air is discharged into a room through the ninth pipeline 805.

Example 2:

referring to fig. 1 to 6, the overall technical solution is further optimized on the basis of embodiment 1, basically the same as embodiment 1.

Further comprising: and the spray head 404 is fixedly connected to the inner wall of the bottom of the isolation cover 403, and the spray head 404 is communicated with the third pipeline 205 through a fifth pipeline 405.

Through the design of the reciprocating screw 803, when the dust removing plate 402 is completely rotated out of the detection cylinder 3, when the fourth pipeline 303 and the second control cavity 8 are cut off, then detection is performed, at this moment, the dust removing plate 402 rotates to the position above the spray head 404, because at this moment, the fourth pipeline 303 and the second control cavity 8 are cut off, the air pressure in the detection cylinder 3, the third pipeline 205 and the fifth pipeline 405 is increased, at this moment, part of air is sprayed out through the spray head 404 and is sprayed to the dust removing plate 402, and dust attached to the dust removing plate 402 after the dust removing plate 402 is swept away from the transparent plate 302 is blown off.

When the dust removing plate 402 rotates into the detection cylinder 3 again, the fourth duct 303 and the second control chamber 8 are communicated, at this time, the air pressure in the detection cylinder 3, the third duct 205 and the fifth duct 405 is reduced, and because resistance exists in the nozzle 404, no air flow is ejected or only weak air flow is ejected, and most of the air flow is discharged through the fourth duct 303.

The dust removing plate 402 rotates clockwise, when the dust removing plate 402 comes out of the detection cylinder 3, the dust removing plate firstly passes through the upper part of the spray head 404 and then contacts with the erasing plate 502, a part of dust on the dust removing plate 402 is blown away by the spray head 404 and then contacts with the erasing plate 502, and the erasing efficiency of the erasing plate 502 is improved.

The dust-removing plate 402 is provided with air holes, and air can directly pass through the dust-removing plate 402.

As shown in fig. 1, an exhaust port 503 is provided at an end of the shielding cover 403 away from the detection cylinder 3, a sixth pipeline 504 is connected to the exhaust port 503, and the other end of the sixth pipeline 504 is communicated with the outside.

When dust is removed from the surface of the dust removing plate 402 through the spraying head 404 and the erasing plate 502, the dust is retained in the shielding case 403, and at this time, since the side wall of the detection cylinder 3 is provided with the through groove, air enters the shielding case 403 through the through groove, then enters the sixth pipeline 504 through the exhaust port 503, and then is exhausted to the outside, and at this time, the dust is also brought into the outside under the action of the air flow.

The diameter of the sixth pipe 504 is much smaller than that of the fourth pipe 303 and the ninth pipe 805, so even though air is exhausted to the outside through the sixth pipe 504, a small part of the air is still exhausted through the fourth pipe 303 and the ninth pipe 805, and when the fourth pipe 303 and the second control chamber 8 are in a cut-off state, the air pressure in the detection cylinder 3, the third pipe 205 and the fifth pipe 405 is still increased because the diameter of the sixth pipe 504 is small and the air intake amount of the air pump 201 is constant.

As shown in fig. 1, 2 and 6, in order to remove the dust on the erasing plate 502 and facilitate the next cleaning of the dust removing plate 402, the overall technical solution is further optimized.

An air injection plate 603 is arranged on the inner wall of the top of the isolation hood 403, air injection holes are formed in the bottom of the air injection plate 603, air is injected out through the air injection holes, the air injection plate 603 is located right above the erasing plate 502, and an eighth pipeline 602 is arranged on the air injection plate 603; the box body 1 is also internally provided with a cut-off mechanism which is respectively communicated with the eighth pipeline 602 and the third pipeline 205; the intercepting mechanism is used for controlling the on-off of the air flow.

The gas injection holes are through holes, so that the resistance to gas flow is much smaller than that of the showerhead 404.

When the air pump 201 works, when air enters the detection cylinder 3 through the third pipeline 205, part of the air enters the intercepting mechanism through the seventh pipeline 6, then the on-off is controlled through the intercepting mechanism, when the dust removing plate 402 enters the detection cylinder 3, the intercepting mechanism is switched on, then the air is sprayed out through the air spraying plate 603, the air is sprayed to the erasing plate 502, dust on the lower surface of the erasing plate 502 is blown off, when the dust removing plate 402 is completely rotated out of the detection cylinder 3, the intercepting mechanism is switched off, and the air spraying plate 603 does not spray air.

The erasing plate 502 is provided with air holes, and air can directly pass through the erasing plate 502.

The mechanism that dams includes: the first control cavity 601 is fixed in the box body 1, the first control cavity 601 is communicated with the third pipeline 205 through a seventh pipeline 6, and one end of the eighth pipeline 602, which is far away from the gas injection plate 603, is communicated with the first control cavity 601; the first cutoff block 701 is slidably connected in the first control cavity 601, a connecting rod 7 is fixedly connected to the side wall of the first cutoff block 701, and the connecting rod 7 extends out of the first control cavity 601.

The air cylinder 702 is fixed in the box body 1, the reciprocating plate 703 is slidably connected in the box body 1, the output end of the air cylinder 702 is fixedly connected with the reciprocating plate 703, and one end of the connecting rod 7 extending out of the first control cavity 601 is fixedly connected with the reciprocating plate 703.

The cylinder 702 is started to push the reciprocating plate 703 to move, and then the connecting rod 7 drives the reciprocating plate 703 to slide in the first control cavity 601 in a reciprocating manner, as shown in fig. 1, when the first control cavity 601 slides to the communication position between the seventh pipeline 6 and the first control cavity 601, the stop is realized, and when the first control cavity 601 is moved away, the conduction is realized.

As shown in FIG. 1, the bottom of the filter box 202 is provided with a first side door 9, and the bottom of the detection cylinder 3 is provided with a second side door 901.

The filter 203 can be dismantled and connect in the rose box 202, is convenient for change through first side door 9, and detector 301 and transparent plate 302 can be dismantled and connect in detecting a section of thick bamboo 3, are convenient for change the maintenance through second side door 901.

The side wall of the box body 1 is also provided with a side door.

As shown in fig. 1, the device further comprises a fixing plate 101, wherein the fixing plate 101 is connected with the box body 1 through a connecting bolt 103; the fixing plate 101 is provided with a coupling hole 102.

The box body 1 can be quickly connected with other objects, such as a wall surface and a roof, through the connecting holes 102 on the fixing plate 101.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an air purification new trend device with detect function, includes box (1), connects air pump (201) and first pipeline (2) in box (1), its characterized in that still includes:

the filter box (202) is fixedly connected in the box body (1), one end of the first pipeline (2) is communicated with the filter box (202), the input end of the air pump (201) is communicated with the filter box (202) through a second pipeline (204), a filter plate (203) is arranged in the filter box (202), and the first pipeline (2) and the second pipeline (204) are respectively positioned on two sides of the filter plate (203);

the detection cylinder (3) is fixedly connected in the box body (1), the output end of the air pump (201) is communicated with the detection cylinder (3) through a third pipeline (205), and a fourth pipeline (303) is further arranged on the detection cylinder (3);

a detector (301) and a transparent plate (302) are arranged in the detection barrel (3), and the detector (301) is separated from the third pipeline (205) and the fourth pipeline (303) through the transparent plate (302).

2. The fresh air device with the function of detection according to claim 1, characterized by further comprising:

the motor (4) is fixedly connected in the box body (1), the output end of the motor (4) is fixedly connected with a connecting plate (401), and a dust removing plate (402) is fixedly connected to the connecting plate (401);

the dust removing plate (402) can enter the detection cylinder (3) and is attached to the transparent plate (302);

a shielding cover (403) fixedly connected with the side wall of the detection cylinder (3).

3. The fresh air device with the function of detection as claimed in claim 2, characterized by further comprising:

the limiting strip (5) is fixedly connected to the inner wall of the isolation cover (403), a frame (501) can be inserted into the side wall of the isolation cover (403), and the frame (501) is clamped with the limiting strip (5);

the erasing plate (502) is fixedly connected to the frame (501), and the erasing plate (502) can be attached to the surface of the dust removing plate (402).

4. The fresh air device with the function of detection as claimed in claim 3, characterized by further comprising:

the second control cavity (8) is fixedly connected in the box body (1), and a second interception block (801) is connected in the second control cavity (8) in a sliding manner;

one end of the fourth pipeline (303) far away from the detection cylinder (3) is communicated with a second control cavity (8), and a ninth pipeline (805) is connected to the second control cavity (8);

a rotating shaft (802) is rotatably connected in the box body (1), a reciprocating thread (803) is arranged at one end of the rotating shaft (802) extending into the second control cavity (8), and the second flow intercepting block (801) is in threaded connection with the reciprocating thread (803);

the output end of the motor (4) is connected with the rotating shaft (802) through a belt (804).

5. The fresh air device with the function of detection as claimed in claim 4, characterized by further comprising: and the spray head (404) is fixedly connected to the inner wall of the bottom of the isolation cover (403), and the spray head (404) is communicated with the third pipeline (205) through a fifth pipeline (405).

6. The fresh air device with the air purification function according to claim 5, wherein an exhaust port (503) is provided at an end of the isolation cover (403) far away from the detection cylinder (3), and a sixth pipeline (504) is connected to the exhaust port (503).

7. The air purifying and fresh air device with the detection function as claimed in claim 4, wherein an air injection plate (603) is arranged on the inner wall of the top of the isolation hood (403), the air injection plate (603) is located right above the erasing plate (502), and an eighth pipeline (602) is arranged on the air injection plate (603);

the box body (1) is also internally provided with a cut-off mechanism which is respectively communicated with an eighth pipeline (602) and a third pipeline (205);

the intercepting mechanism is used for controlling the on-off of the airflow.

8. The fresh air device with air purification and detection functions as claimed in claim 7, wherein the shutoff mechanism comprises:

the first control cavity (601) is fixed in the box body (1), the first control cavity (601) is communicated with the third pipeline (205) through a seventh pipeline (6), and one end, far away from the air injection plate (603), of the eighth pipeline (602) is communicated with the first control cavity (601);

the first cutoff block (701) is connected in the first control cavity (601) in a sliding mode, a connecting rod (7) is fixedly connected to the side wall of the first cutoff block (701), and the connecting rod (7) extends out of the first control cavity (601);

the air cylinder (702) is fixed in the box body (1), the reciprocating plate (703) is slidably connected in the box body (1), the output end of the air cylinder (702) is fixedly connected with the reciprocating plate (703), and one end, extending out of the first control cavity (601), of the connecting rod (7) is fixedly connected with the reciprocating plate (703).

9. The fresh air device with the function of detection as claimed in claim 1, wherein a first side door (9) is arranged at the bottom of the filter box (202), and a second side door (901) is arranged at the bottom of the detection cylinder (3).

10. The air purification fresh air device with the detection function according to any one of claims 1 to 9, further comprising a fixing plate (101), wherein the fixing plate (101) is connected with the box body (1) through a connecting bolt (103);

the fixing plate (101) is provided with a connecting hole (102).