CN213516527U

CN213516527U - Ambient air detection device

Info

Publication number: CN213516527U
Application number: CN202021795660.0U
Authority: CN
Inventors: 罗茜; 苏跃; 蒙楠茜
Original assignee: Sichuan Sainasi Analysis And Testing Co Ltd
Current assignee: Sichuan Sainasi Analysis And Testing Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-06-22
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses an ambient air detection device, which is used for solving the problem that the acquisition speed of an acquisition cylinder is slow in the use process of the existing ambient air detection device, and comprises a base, a rolling wheel capable of rotating is arranged on the base, a traction tube is wound on the rolling wheel, the traction tube is connected with a balloon, an airflow channel is formed in the middle of the traction tube, the balloon is connected to the traction tube, a gap for air to flow through is formed between the balloon and the airflow channel, one end of the traction tube is fixedly connected with the balloon, the other end of the traction tube is wound on the winding wheel and then is communicated with an air inlet pipe of an exhaust fan arranged on the base, the air outlet pipe of air exhauster intercommunication has the buffer memory section of thick bamboo that is used for accomodating the air, buffer memory section of thick bamboo intercommunication has the collection system who is used for storing respectively the atmosphere.

Description

Ambient air detection device

Technical Field

The utility model belongs to the technical field of atmospheric detection; in particular to an ambient air detection device.

Background

Along with the higher living standard of people, the requirement on air quality is higher, and therefore, the sampling detection on the atmosphere is more and more. The important steps of atmospheric environment detection during atmospheric sampling have great reliability relation to detection data, and methods for collecting atmospheric samples mainly comprise two types: one is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to absorb or retain pollutants, and enrich the original pollutants with lower concentration in the atmosphere, such as an air extraction method and a filter membrane method. The result of measurements with this type of method is the average concentration of the contaminants in the atmosphere over the sampling time. Another type is to use containers (glass bottles, plastic bags, rubber bladders, syringes, etc.) to collect air containing contaminants. Such methods are useful in situations where the concentration of pollutants in the atmosphere is high; or the sensitivity of the determination method is higher; contaminated gases and vapors that are not readily absorbed by liquid absorbents or solid adsorbents. The result of this measurement is the instantaneous concentration or the average concentration in a short time of the pollutants in the atmosphere.

The current methods for collecting air containing pollutants by using containers mainly comprise two methods: for high-altitude atmospheric sampling, atmospheric samples are mainly collected in modes of balloons, aircrafts and the like; for low-altitude atmospheric sampling, a handheld device is mainly adopted for collecting the atmospheric sample.

For high-altitude atmospheric sampling, cost control is limited, and currently, a balloon sampling mode is mainly adopted. In the prior art, technical documents about collecting air samples by using balloons are more, for example, a utility model patent with application number 201920561410.1 discloses an atmospheric particulate matter collecting and detecting device, which comprises a base, an induced draft fan, a collecting box and an atmospheric particulate matter concentration monitor; a motor is installed above the base, a wireless remote controller is placed above the base on one side of the motor, the collection box is installed above the base plate, an induced draft fan is installed on one side of the collection box in a penetrating mode, an atmospheric particulate matter concentration monitor is installed inside the collection box, a control box is installed on the other side of the collection box, and a hydrogen balloon is installed above the collection box; the output end of the motor is provided with a rope winding wheel, the surface of the rope winding wheel is wound with a traction pipe, and the top end of the traction pipe is fixedly connected with the bottom of the base plate; the collection box side of control box top is run through and is installed out the tuber pipe, the surface mounting who goes out the tuber pipe has the solenoid valve, the ventilation hole has been seted up to the collection box inboard of draught fan below.

The atmospheric quality monitoring items comprise monitoring of characteristic pollutants such as sulfur dioxide, nitrogen oxides, total suspended particulate matters, carbon monoxide, dust fall, hydrocarbons, total oxidants, inhalable particulate matters, nitrogen dioxide, fluorides, lead and the like.

However, different detection items are different in detection mode and detection means, a certain amount of atmosphere is required to be used, and some detection items only send sampled atmosphere into a laboratory for detection, so that a detector carried by a balloon cannot perform comprehensive detection.

SUMMERY OF THE UTILITY MODEL

Based on above technical problem, the utility model provides an environment empty gas detection surveys device can lead back ground and accomodate to the collection section of thick bamboo of difference with the atmosphere in the high altitude to carry out the detection of different projects to the atmosphere in the high altitude respectively.

For solving the above technical problem, the utility model discloses a technical scheme as follows:

the utility model provides an environment empty gas detection surveys device, includes the base, set on the base and to carry out pivoted rolling wheel, the winding has the traction tube on the rolling wheel, the traction tube is connected with the balloon, a serial communication port, the middle part of traction tube is formed with airflow channel, the balloon is connected on the traction tube and form the clearance that is used for the air to flow through between balloon and the airflow channel, the one end and the balloon fixed connection of traction tube, the other end winding of traction tube then communicates each other with the intake pipe of installing the air exhauster on the base on the rolling wheel, the outlet duct intercommunication of air exhauster has the buffer memory section of thick bamboo that is used for accomodating the air, buffer memory section of thick bamboo intercommunication has the collection device who is used for carrying out storage respectively to the atmosphere.

In some embodiments, the collecting device comprises a placing rack for placing a plurality of collecting barrels, the collecting barrels are sequentially arranged in the placing rack from top to bottom, a first pushing cylinder for pushing the collecting barrel at the bottommost part of the placing rack to a buffer barrel is arranged on one side of the placing rack, and a second pushing cylinder for pushing the collecting barrel at the bottommost part of the placing rack out of the placing rack is arranged on the other side of the placing rack; the first pushing cylinder and the second pushing cylinder are respectively arranged on the bases on two adjacent sides of the placing frame; the bottom of the placing frame is respectively provided with a through hole through which the collecting cylinder passes under the pushing action of the first pushing cylinder or the second pushing cylinder.

In some embodiments, a placing groove is formed in the buffer cylinder, a first switch valve is installed in the placing groove, the inner diameter of the placing groove is matched with the outer diameter of the collecting cylinder, and a second switch valve is installed on the collecting cylinder.

In some embodiments, the first switch valve and the second switch valve each include a valve seat, a push rod is arranged in the middle of the valve seat, the push rod is connected with a guide rod, a containing groove used for containing the guide rod is formed in the valve seat, the guide rod is connected with a valve plate located on the outer end face of the valve seat, the valve plate is connected with a first spring, one end of the first spring is fixedly connected with the valve plate, the other end of the first spring is fixedly connected with the bottom of the containing groove, the valve seat is further provided with an air outlet channel matched with the valve plate, the central line of the push rod of the first switch valve is overlapped with the central line of the push rod of the second switch valve, the push rod of the first switch valve can be in contact with the push rod of the second switch valve, and the air outlet channels of the first switch valve and the second switch valve correspond.

In some embodiments, push plates are connected to the push rods of the first switch valve and the second switch valve.

In some embodiments, the valve seats of the first switch valve and the second switch valve are provided with accommodating cavities for accommodating the push plates, so that when the first switch valve and the second switch valve are in contact extrusion, the push plates can be accommodated in the accommodating cavities.

In some embodiments, a second spring is disposed on the periphery of the placement groove, one end of the second spring is fixedly connected with the buffer cylinder, and the other end of the second spring is a free end for contacting with the collection cylinder.

In some embodiments, a piston capable of sliding in the buffer cylinder and sealing with the buffer cylinder is arranged in the buffer cylinder, first one-way valves used for discharging gas in the buffer cylinder out of the buffer cylinder are installed at the top and the bottom of the buffer cylinder, an electromagnetic directional valve is communicated with an air outlet pipe of the exhaust fan, the air outlet pipe of the exhaust fan is communicated with an air inlet of the electromagnetic directional valve, the electromagnetic directional valve is provided with a first air outlet and a second air outlet, a second one-way valve used for guiding gas into the buffer cylinder is installed at the top of the buffer cylinder, the first air outlet corresponds to and is communicated with the second one-way valve, the second air outlet is communicated with an air transmission pipeline, and the air transmission pipeline is communicated with the bottom of the buffer cylinder and can input gas into the buffer cylinder.

In some embodiments, the placement slot is open at the upper section of the buffer container.

In some embodiments, the volume of gas in the buffer cylinder is greater than the sum of the volume of the gas flow passage of the traction tube and the volume of gas between the gas inlet tube of the exhaust fan to the gas delivery conduit and the connection end of the buffer cylinder.

In some embodiments, a travel switch is installed at the inner top of the buffer cylinder, the travel switch is electrically connected with the electromagnetic directional valve, and a pressing block for touching a moving contact of the travel switch is installed on the upper surface of the piston.

In some embodiments, an installation groove is formed in the inner top of the buffer cylinder, the travel switch is installed in the installation groove, and a moving contact of the travel switch extends downwards to the inner top surface of the buffer cylinder.

In some embodiments, a hollow rotating shaft with a cavity is provided in the middle of the winding wheel, two ends of the hollow rotating shaft are mounted on the base through bearing seats, the end of the traction tube wound on the winding wheel is communicated with the cavity of the hollow rotating shaft, a sealing cover is provided at one end of the hollow rotating shaft, and a piston head is sleeved on the periphery of the other end of the hollow rotating shaft and extends into the air inlet pipe of the exhaust fan and is sealed with the air inlet pipe.

In some embodiments, a plurality of wear-resistant sealing rings are arranged on the periphery of the piston head and/or the inner wall of the air inlet pipe of the exhaust fan.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses an ambient air detection device is in the use, at first through the traction tube on the release rolling wheel, make the balloon rise to the assigned height, then the air exhauster begins to work, introduce the air current in the air in the height into the intake pipe of air exhauster through the air current passageway of traction tube, then enter into the magenetic exchange valve through the outlet duct of air exhauster, and enter into the buffer memory section of thick bamboo through the second gas outlet and the gas transmission pipeline of magenetic exchange valve, thereby drive the piston upward movement, through the first check valve on the buffer memory section of thick bamboo, exhaust the air in the buffer memory section of thick bamboo on the piston upside, when the piston moves to the interior top of buffer memory section of thick bamboo, the movable contact of extrusion piece touching travel switch on the piston (because the volume of buffer memory section of thick bamboo is greater than the volume of traction tube with the junction of balloon to the gas transmission pipeline with the buffer memory section of thick bamboo junction, therefore, when exhausting, the air flow channel of the traction pipe, the air outlet pipeline of the exhaust fan and the air transmission pipeline are filled with all the gas introduced from the high altitude), the travel switch transmits the electric signal to the electromagnetic directional valve, so that the electromagnetic directional valve discharges the directional gas from the first air outlet and directly enters the buffer cylinder on the upper side of the piston from the second one-way valve, and the buffer cylinder on the upper side of the piston exhausts the air, so that the air flow in the high altitude can be collected through the buffer cylinder on the upper side of the piston. After the gas discharged from the first gas outlet enters the buffer cylinder on the upper side of the piston, the piston slowly moves downwards, when the piston moves to a position below the placing groove, the first pushing cylinder drives the collecting cylinder on the lowest side of the placing frame to be pushed out towards the buffer cylinder, so that the collecting cylinder and the placing groove are clamped with each other (at the moment, a part of the collecting cylinder is still in the placing frame), the first switch valve in the placing groove is contacted with the push rod on the second switch valve on the collecting cylinder, the first switch valve and the second switch valve are opened, the atmosphere in the buffer cylinder enters the collecting cylinder, after the collecting cylinder collects the atmosphere, the first pushing cylinder resets, the collecting cylinder automatically resets into the placing frame under the action of the second spring, and then the second pushing cylinder pushes the collecting cylinder which finishes collecting from the other direction out of the placing frame; after the second promotes the cylinder and resets, under the effect of gravity, the automatic extreme low position department to the rack that falls of the collection section of thick bamboo that the top is adjacent, then in the standing groove that the collection section of thick bamboo that rethread first promoted the cylinder again to the buffer memory section of thick bamboo of the bottom, so circulate to accomplish a plurality of collection section of thick bamboos and obtain the atmosphere in the air from the buffer memory section of thick bamboo. When the first pushing cylinder resets until the first pushing cylinder pushes the collecting cylinder to the caching cylinder again, the piston continuously and gradually moves downwards, and gas on the lower side of the piston is gradually discharged through the first one-way valve at the bottom of the caching cylinder, so that the caching purpose is achieved. And after sampling is finished, closing the exhaust fan, and withdrawing the balloon through the traction tube. Compare in prior art, can draw back ground and accomodate to different collection tube with the atmosphere in the high air to carry out the detection of different projects to the atmosphere in the high air respectively. Simultaneously the utility model discloses when sampling atmospheric to a plurality of collection section of thick bamboo, have quick, convenient characteristics.

In addition, when the high-altitude atmosphere is collected, the balloon only needs to be put into the high altitude, and the balloon does not need to carry equipment in the whole floating process, so that the volume of the balloon can be reduced, and the manufacturing cost is reduced; more importantly, after the traction tube is blocked (or the balloon is damaged) under the action of external force, no additional injury is caused, and the use safety is ensured.

Drawings

Fig. 1 is a schematic view of a state of an embodiment of the present invention, in which a piston is located at a lower end of a buffer cylinder, and the buffer cylinder on an upper side of the piston is filled with air;

fig. 2 is a schematic view of a state of an embodiment of the present invention, in which a piston is located at a middle position of a buffer cylinder, an exhaust fan is working to input air in the air into the buffer cylinder at a lower side of the piston, and air in the buffer cylinder at an upper side of the piston is exhausted through a first check valve at a top of the buffer cylinder;

fig. 3 is a schematic view of an embodiment of the present invention, in which the piston is located at the top of the buffer cylinder, and the air in the buffer cylinder on the upper side of the piston is exhausted;

fig. 4 is a schematic view of a state of an embodiment of the present invention, in which the atmosphere in the upper air enters the buffer cylinder on the upper side of the piston from the first air outlet and drives the piston to move downward, and when the piston moves downward, the air in the buffer cylinder on the lower side of the piston is discharged out of the buffer cylinder through the first one-way valve on the bottom of the buffer cylinder; after the piston moves below the placing groove, the collection of the atmosphere in the collecting cylinder and the caching of the atmosphere in the collecting cylinder can be realized through the cooperation of the first pushing cylinder and the second pushing cylinder;

FIG. 5 is a schematic view of a portion of FIG. 4 at A;

FIG. 6 is a schematic enlarged view of a portion B of FIG. 4;

fig. 7 is a schematic structural diagram of a first switch valve and a second switch valve of the present invention;

FIG. 8 is a schematic view of the connection between the hollow shaft and the intake pipe of the exhaust fan;

the labels in the figure are: 1. a base 101, a universal wheel 102, a handrail 2, a winding wheel 201, a mounting rack 202, an adjusting screw rod 203, a locking nut 204, a hollow rotating shaft 2041, a piston head 2042, a wear-resistant sealing ring 205, a bearing seat 3, a traction pipe 301, an air flow channel 302, a strapping rope 4, a balloon 5, an exhaust fan 501, an air inlet pipe 502, an air outlet pipe 6, a buffer cylinder 601, a piston 602, an extrusion block 603, a first one-way valve 604, a second one-way valve 605, a travel switch 6051, a movable contact 606, a mounting groove 607, a placing groove 608, a second spring 7, an electromagnetic reversing valve 701, an air inlet 702, a first air outlet 703, a second air outlet 704, an air transmission pipeline 8, a placing rack 801, a collecting cylinder 802, a first pushing cylinder 803, a through hole 9, a first switch valve 901, a valve seat 902 and a push rod, 903. guide bar, 904, holding tank, 905, valve block, 906, first spring, 907, air outlet channel, 908, push pedal, 909, holding chamber.

Detailed Description

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

In the description of the present invention, it should be understood that the terms "one end", "the other end", "both ends", "between", "middle part", "lower part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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.

With reference to the accompanying drawings, the ambient air detection device of the present invention comprises a base 1, wherein the base 1 is provided with a universal wheel 101 and a handrail 102, the movement and the transportation of the base are facilitated through the universal wheel and the handrail 102, and the base 1 is provided with a rolling wheel 2 capable of rotating; the base 1 may be placed on the ground or on the top of a building, etc. In some embodiments, the base 1 is provided with a mounting rack 201, the winding wheel 2 is mounted on the mounting rack 201, the mounting rack 201 is provided with an adjusting screw 202, the adjusting screw 202 on the upper side of the mounting rack 201 and the adjusting screw 202 on the lower side of the mounting rack 201 are both provided with a lock nut 203, and the distance between the winding wheel 2 and the base 1 can be adjusted through the lock nut 203 and the adjusting screw 202, so that the length of the traction tube 3 wound on the winding wheel 2 can be adjusted according to the use condition. The winding wheel 2 is wound with a traction tube 3, the traction tube 3 is connected with a balloon 4, an air flow channel 301 is formed in the middle of the traction tube 3, the balloon 4 is bound on the traction tube 3 through a binding rope 302, a gap for air to flow through is formed between the balloon 4 and the air flow channel 301, namely, the air flow channel 301 is not blocked by the air flow 4, so that air can be conveniently obtained from the high altitude through the air flow channel 301 of the traction tube 3, the air is sucked out from the air flow channel 301 of the traction tube 3 for collection and detection, one end of the traction tube 3 is fixedly connected with the balloon 4, the other end of the traction tube 3 is wound on the winding wheel 2 and then is communicated with an air inlet pipe 501 of an exhaust fan 5 installed on the base 1, an air outlet pipe of the exhaust fan 501 is communicated with a buffer cylinder 6 for containing air, and the sucked air is stored through the buffer cylinder 6, the buffer cylinder 6 is communicated with a collecting device for respectively storing atmosphere.

In some embodiments, the collecting device comprises a placing rack 8 for placing a plurality of collecting barrels 801, the collecting barrels 801 are sequentially arranged in the placing rack 8 from top to bottom, a first pushing cylinder 802 for pushing the collecting barrel 801 at the bottommost part of the placing rack to the buffer barrel 6 is arranged on one side of the placing rack 8, and a second pushing cylinder (not shown in the drawings) for pushing the collecting barrel 801 at the bottommost part of the placing rack out of the placing rack 8 is arranged on the other side of the placing rack 8; the first pushing cylinder 802 and the second pushing cylinder are respectively arranged on the bases 1 on two adjacent sides of the placing frame 8; the bottom of the placing frame 8 is respectively provided with a through hole 803 through which the collecting cylinder 801 passes under the pushing action of the first pushing cylinder 802 or the second pushing cylinder. That is, the periphery of the bottom of the placing frame 8 is provided with through holes 803 for pushing out the collecting cylinder 801, wherein two opposite through holes 803 correspond to the first pushing cylinder 802, and the other two through holes 803 correspond to the second pushing cylinder.

In some embodiments, a placement groove 607 is formed on the buffer cylinder 6, a first switch valve 9 is installed in the placement groove 607, the inner diameter of the placement groove 607 is matched with the outer diameter of the collection cylinder 801, and a second switch valve is installed on the collection cylinder 801. Wherein, install a plurality of sealing washers on the inner wall of standing groove for realize gathering section of thick bamboo and standing groove's sealing connection. And the first switch valve and the second switch valve are identical in structure and size.

In some embodiments, the first and second switching valves 9 and 9 each include a valve seat 901, wherein the valve seat 901 is sealingly mounted in the placement groove 607; a push rod 902 is arranged in the middle of the valve seat 901, the push rod 902 is connected with a guide rod 903, an accommodating groove 904 for accommodating the guide rod 903 is arranged on the valve seat 901, the guide rod 903 is connected with a valve plate 905 positioned on the outer end surface of the valve seat 901, the valve plate 905 is connected with a first spring 906, one end of the first spring 906 is fixedly connected with the valve plate 905, the other end of the first spring 906 is fixedly connected with the bottom of the accommodating groove 904, the valve seat 901 is further provided with an air outlet channel 907 matched with the valve plate 904, the central line of the push rod 902 of the first switch valve 9 is overlapped with the central line of the push rod 902 of the second switch valve, and the push rod 902 of the first switch valve 9 can be contacted with the push rod 902 of the second switch valve, that is, after the collecting barrel 801 enters the accommodating groove 607, the push rods 902 of the first switch valve 9 and the push rod 902 of the second switch valve can, the outlet passage 907 of the first and second switching valves 9 and 907 correspond to each other. The valve plate 905 is located on one end face of the valve seat 901, and the push rod 902 extends out of the middle of the valve seat 901 to the other side face of the valve seat 901.

In some embodiments, in order to facilitate the contact between the push rods of the first switch valve and the second switch valve, push plates 908 are connected to the push rods 902 of the first switch valve 9 and the second switch valve.

In some embodiments, the valve seat 901 of the first and

second switch valves

9 and 9 is opened with a receiving cavity 909 for receiving the push plate 908, so that when the push plates of the first and

second switch valves

9 and 9 contact and press, the push plate 908 can be received in the receiving cavity 909. Thereby make when gathering a section of thick bamboo and enter into the mounting groove and when moving to the settlement position, the intracavity is just being accomodate in the push pedal, the disk seat of first ooff valve and second ooff valve just contacts each other, thereby make the outlet channel of first ooff valve direct and the outlet channel of second ooff valve contact each other, thereby make from a buffer memory section of thick bamboo atmosphere can directly enter into the outlet channel of second ooff valve on the collection section of thick bamboo through the outlet channel on the first ooff valve, thereby prevent during the outside gas from entering into the collection section of thick bamboo as far as possible, ensure that the gas that the collection section of thick bamboo was gathered is the atmosphere of export in the buffer memory section of thick bamboo, and then guarantee the accuracy of sampling.

In some embodiments, a second spring 608 is disposed on the periphery of the placement groove 607, one end of the second spring 608 is fixedly connected to the buffer cylinder 6, and the other end of the second spring 608 is a free end for contacting with the collection cylinder 801. Wherein, through setting up the second spring, when first promotion cylinder resets (when not exerting pressure to the collection section of thick bamboo), the second spring can pop out collection section of thick bamboo from the standing groove automatically and retract to the rack in.

In some embodiments, the buffer cylinder comprises a sealed buffer cylinder 6, a piston 601 capable of sliding in the buffer cylinder 6 and sealing with the buffer cylinder 6 is arranged in the buffer cylinder 6, the top and the bottom of the buffer cylinder 6 are both provided with a first one-way valve 603 for exhausting the gas in the buffer cylinder 6 out of the buffer cylinder 6, an air outlet pipe 502 of the exhaust fan 5 is communicated with an electromagnetic directional valve 7, the air outlet pipe 502 of the exhaust fan 5 is communicated with an air inlet 701 of the electromagnetic directional valve 7, the electromagnetic directional valve 7 is provided with a first air outlet 702 and a second air outlet 703, the top of the buffer cylinder 6 is provided with a second one-way valve 604 for guiding air into the buffer cylinder 6, the first air outlet 702 is communicated with the second one-way valve 604, the second air outlet 703 is communicated with an air transmission pipeline 704, the gas transmission pipeline 704 is communicated with the bottom of the buffer cylinder 6 and can transmit gas into the buffer cylinder 6.

In some embodiments, the placement slot 607 opens at the upper section of the buffer cylinder 6. To facilitate viewing of the position of the piston 601 within the buffer cylinder 6, the buffer cylinder 6 may be provided with a viewing window or the buffer cylinder may be made of a transparent material.

In some embodiments, the buffer cylinder 6 is provided with a through hole, the first check valve 603 and the second check valve 604 are mounted on an inner wall of the through hole, and the first check valve and the second check valve are hermetically connected with the through hole. The second air outlet 703 is just opposite to the through hole for installing the second check valve 604, so that the gas exhausted from the second air outlet 703 can rapidly pass through the second check valve 604 and enter the cache cylinder 6, the distance between the second air outlet 703 and the cache cylinder 6 is reduced, the distance between the second air outlet and the cache cylinder is reduced as much as possible, and the influence of the existing air on atmospheric detection is reduced.

In some embodiments, the gas volume of the buffer cylinder 6 is greater than the sum of the volume of the gas flow channel 301 of the traction tube 3 and the gas volume between the inlet pipe 501 of the exhaust blower 5 to the connection end of the gas delivery pipe 704 and the buffer cylinder 1. That is, when the piston 601 moves to the inner top of the buffer cylinder 1, the buffer cylinder 6 on the lower side of the piston is filled with a part of the air in the high altitude introduced through the traction tube, so that the air channel formed by the traction tube 3, the exhaust fan 5 and the electromagnetic directional valve 7 is filled with the air in the high altitude, and the air flow entering the buffer cylinder 6 is the air in the high altitude when the first air outlet 702 exhausts.

In some embodiments, a travel switch 605 is installed on the inner top of the buffer cylinder 6, the travel switch 605 is electrically connected with the electromagnetic directional valve, and a pressing block 602 for touching a movable contact 6051 of the travel switch 605 is installed on the upper surface of the piston 601. When the piston moves to the inner top end of the buffer cylinder, the pressing block 602 and the movable contact 6051 touching the travel switch 605 generate an electric signal by the travel switch 605, and the electric signal is transmitted to the electromagnetic directional valve 7, so that the electromagnetic directional valve 7 performs direction change. The utility model discloses a travel switch and the cooperation of piston can make the motion of piston and the solenoid directional valve form a linkage operation, and the solenoid directional valve of being convenient for commutates.

In some embodiments, the inner top of the buffer tube 6 is provided with a mounting groove 606, the travel switch 605 is mounted in the mounting groove 606, and the movable contact 6051 of the travel switch 605 extends downward out of the inner top surface of the buffer tube 6, so as to facilitate the engagement of the movable contact and the press block 602.

In some embodiments, the size of the pressing block 602 is smaller than the size of the mounting groove 606, and the pressing block 602 can be received in the mounting groove 606, so as to ensure that the piston 601 can contact the inner top surface of the buffer container 1, thereby exhausting the air in the buffer container 1 on the upper side of the piston 601.

In some embodiments, a hollow rotating shaft 204 with a cavity is provided in the middle of the winding wheel 2, and both ends of the hollow rotating shaft 204 are mounted on the base 1 through bearing seats 205; when the mounting frame 201 is mounted on the base, two ends of the hollow rotating shaft 204 are mounted on the mounting frame 201 through the bearing seat 205, the end portion of the traction pipe 3 wound on the winding wheel 2 is communicated with the cavity of the hollow rotating shaft 204, a sealing cover is arranged at one end of the hollow rotating shaft 204, a piston head 2041 is sleeved on the periphery of the other end of the hollow rotating shaft 204, and the piston head 2041 extends into an air inlet pipe 501 of the exhaust fan 5 and is sealed with the air inlet pipe 501.

In some embodiments, a plurality of wear-resistant sealing rings 2042 are disposed on the periphery of the piston head 2041 and/or the inner wall of the air inlet pipe 501 of the exhaust fan 5, the hollow rotating shaft 204 and the air inlet pipe 501 are hermetically connected through the wear-resistant sealing rings 2042, and the hollow rotating shaft 204 does not affect the air inlet pipe 501 during rotation.

In some embodiments, a forward and reverse rotation motor for driving the hollow rotating shaft 204 to rotate is installed on the base 1 or the mounting rack 201, and the rotation of the winding wheel 2 is realized through the forward and reverse rotation motor.

The embodiment of the present invention is the above. The foregoing is the preferred embodiments of the present invention, and if the preferred embodiments in the preferred embodiments are not obviously contradictory or are based on a certain preferred embodiment, the preferred embodiments can be combined and used by any superposition, and the specific parameters in the embodiments and examples are only for the purpose of clearly expressing the utility model verification process of the utility model, and are not used for limiting the patent protection scope of the present invention, which is still based on the claims, and all the equivalent structural changes made by the contents of the specification and the drawings should be included in the protection scope of the present invention.

Claims

1. The ambient air detection device comprises a base (1), wherein a winding wheel (2) capable of rotating is arranged on the base (1), a traction tube (3) is wound on the winding wheel (2), the traction tube (3) is connected with a balloon (4), the ambient air detection device is characterized in that an air flow channel (301) is formed in the middle of the traction tube (3), the balloon (4) is connected onto the traction tube (3) and a gap for air to flow through is formed between the balloon (4) and the air flow channel (301), one end of the traction tube (3) is fixedly connected with the balloon (4), the other end of the traction tube (3) is wound on the winding wheel (2) and is communicated with an air inlet tube (501) of an exhaust fan (5) installed on the base (1), and an air outlet tube (502) of the exhaust fan (5) is communicated with a buffer tube (6) for containing air, the buffer cylinder (6) is communicated with a collecting device for respectively storing atmosphere.

2. The ambient air detection device according to claim 1, wherein the collection device comprises a placement frame (8) for placing a plurality of collection barrels (801), the collection barrels (801) are sequentially arranged in the placement frame (8) from top to bottom, a first push cylinder (802) for pushing the collection barrel (801) at the bottommost of the placement frame (8) to the buffer barrel (6) is arranged on one side of the placement frame (8), and a second push cylinder for pushing the collection barrel (801) at the bottommost of the placement frame (8) out of the placement frame (8) is arranged on the other side of the placement frame (8); the first pushing cylinder (802) and the second pushing cylinder are respectively arranged on the bases (1) on two adjacent sides of the placing frame (8); the bottom of the placing frame (8) is respectively provided with a through hole (803) through which the collecting cylinder (801) passes under the pushing action of the first pushing cylinder (802) or the second pushing cylinder.

3. The ambient air detection device according to claim 2, wherein a placement groove (607) is formed in the buffer cylinder (6), a first switch valve (9) is installed in the placement groove (607), the inner diameter of the placement groove (607) is matched with the outer diameter of the collection cylinder (801), and a second switch valve is installed on the collection cylinder (801).

4. The ambient air detection device according to claim 3, wherein the first switch valve (9) and the second switch valve each comprise a valve seat (901), a push rod (902) is arranged in the middle of the valve seat (901), the push rod (902) is connected with a guide rod (903), an accommodating groove (904) for accommodating the guide rod (903) is arranged on the valve seat (901), the guide rod (903) is connected with a valve plate (905) located on the outer end face of the valve seat (901), the valve plate (905) is connected with a first spring (906), one end of the first spring (906) is fixedly connected with the valve plate (905), the other end of the first spring (906) is fixedly connected with the bottom of the accommodating groove (904), the valve seat (901) is further provided with an air outlet channel (907) mutually matched with the valve plate (905), the center line of the push rod (902) of the first switch valve (9) and the center line of the push rod (902) of the second switch valve are mutually coincident and the first opening is realized The push rod (902) of the closing valve (9) can be in contact with the push rod (902) of the second switch valve, and the air outlet channels (907) of the first switch valve (9) and the second switch valve correspond to each other.

5. The ambient air detection device according to claim 4, wherein push plates (908) are connected to the push rods (902) of the first switch valve (9) and the second switch valve.

6. The ambient air detection device according to claim 5, wherein the valve seats (901) of the first switch valve (9) and the second switch valve are provided with accommodating cavities (909) for accommodating the push plates (908), so that the push plates (908) of the first switch valve and the second switch valve can be accommodated in the accommodating cavities (909) when the push plates (908) of the first switch valve and the second switch valve are in contact pressing.

7. The ambient air detection device according to any of claims 3-6, wherein a second spring (608) is arranged at the periphery of the placement groove (607), one end of the second spring (608) is fixedly connected with the buffer cylinder (6), and the other end of the second spring (608) is a free end for contacting with the collection cylinder (801).

8. The ambient air detection device according to claim 7, wherein a piston (601) capable of sliding in the buffer cylinder (6) and sealing with the buffer cylinder (6) is arranged in the buffer cylinder (6), a first check valve (603) for discharging the gas in the buffer cylinder (6) out of the buffer cylinder (6) is installed at both the top and the bottom of the buffer cylinder (6), an electromagnetic directional valve (7) is connected to an air outlet pipe (502) of the exhaust fan (5), the air outlet pipe (502) is connected to an air inlet (701) of the electromagnetic directional valve (7), the electromagnetic directional valve (7) has a first air outlet (702) and a second air outlet (703), a second check valve (604) for guiding the gas into the buffer cylinder (6) is installed at the top of the buffer cylinder (6), and the first air outlet (702) and the second check valve (604) correspond to each other and are communicated with each other, the second air outlet (703) is communicated with an air transmission pipeline (704), and the air transmission pipeline (704) is communicated with the bottom of the cache cylinder (6) and can input air into the cache cylinder (6).

9. The ambient air detection device according to claim 8, wherein the placement slot (607) opens in an upper section of the buffer cylinder (6).