CN219511907U

CN219511907U - Multi-point air sampling equipment

Info

Publication number: CN219511907U
Application number: CN202320574960.3U
Authority: CN
Inventors: 薛建娟
Original assignee: Suzhou Zeyi Automation Technology Co ltd
Current assignee: Suzhou Zeyi Automation Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-08-11
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a multipoint air sampling device, which comprises a shell, wherein a plurality of air inlet connectors and at least one air channel outlet are arranged on the shell, each air inlet connector is provided with an air inlet and an air outlet, a rotatable sampling device is arranged in the shell, each sampling device comprises a sampling connector and a sampling tube, one end of each sampling tube is connected with the sampling connector, the other end of each sampling tube is connected with the air channel outlet, the sampling device rotates so that the sampling connector corresponds to the air outlet, one end of each sampling connector corresponds to the air outlet is conical, the caliber of each sampling connector is smaller than or equal to that of the air outlet, and the conical diameter of each sampling tube gradually increases along the air inlet direction. The multipoint sampling in the space is realized by one sampling device, so that the problem of high cost caused by using a plurality of samplers is avoided; the cut-off valve is opened and closed to enable air to selectively enter the air inlet joint, so that the air inlet joint is relatively independent in work; the conical sampling joint can prevent other gases from entering the sampling joint and avoid sampling errors.

Description

Multi-point air sampling equipment

Technical Field

The utility model relates to the field of air sampling, in particular to a multi-point air sampling device.

Background

The air detection is to detect the composition of air, the narrow air detection is mainly from the application point of view, the focus is indoor air detection, it is to refer to the material harmful to human body that indoor decoration material, furniture, etc. contain, release to house, the decoration pollution that causes in the office environment, detect the air quality.

The common method of multipoint sampling in large space adopts a handheld instrument to change different positions for sampling, thus needing personnel to be in a sampling environment, being easy to interfere with the sampling environment, improving the labor cost and being unable to ensure the safety of the personnel. Multiple samplers can also be placed at multiple points for continuous monitoring, and this sampling approach can result in greater cost.

In the air sampling process, a plurality of sampling cavities are all sucking air, if other gases are mixed in the target sampling cavity, sampling errors can be generated, and detection results are affected.

Disclosure of Invention

To overcome the above-mentioned drawbacks, an object of the present utility model is to provide a multipoint air sampling device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a multiple spot air sampling equipment, which comprises a housin, be equipped with a plurality of air inlet joints and at least one gas circuit export on the casing, air inlet joint has air inlet and gas outlet, be equipped with rotatable sampling device in the casing, sampling device includes sampling joint and sampling tube, sampling joint is connected to sampling tube one end, the gas circuit export is connected to the other end, sampling device rotates the back, in order to make sampling joint correspond the gas outlet, sampling joint corresponds the one end of gas outlet for the toper, and the bore is less than or equal to the gas outlet bore, along the direction of admitting air, the toper diameter increases gradually. The multipoint sampling or multipoint monitoring in the space is realized by only one sampling device, so that the labor cost is reduced, the safety of personnel is ensured, and the problem of high cost caused by using a plurality of samplers is avoided; air selectively enters the air inlet joint by controlling the opening and closing of the interception valve, so that the air inlet joint is relatively independent in work; the conical sampling joint can prevent other gases from entering the sampling joint, so that sampling errors are avoided, and the efficiency of multipoint sampling measurement is improved.

Furthermore, the sampling connector is arranged in a non-contact manner with the air outlet, so that friction between the sampling connector and the air outlet is avoided, the sampling connector is not easy to damage, can be used repeatedly, and has strong practicability and wide applicability.

Furthermore, the sampling device comprises an angle sensor, the angle sensor corrects the angle deviation of the sampling device, eliminates the accumulated angle deviation generated when the sampling connector rotates, and ensures that the sampling connector is opposite to the position of the air outlet.

Still further still include two-way step motor, control sampling device's rotation, the controller can output signal control step motor forward or reverse drive, step motor forward or reverse drive sampling device's rotation correspondingly to realize that sampling connector corresponds different air inlet connectors, gather the air in different places.

Furthermore, the outer side wall of the air inlet connector is provided with a tooth-shaped convex part protruding outwards in the radial direction, the air inlet connector is clamped on the inner wall of the sampling tube in a sealing way, so that the phenomenon of leakage and air leakage caused by disconnection of the outer connecting tube and the inner connecting tube due to external force is effectively avoided, and the safety is improved.

Still further, including dustproof baffle between sampling joint and the gas outlet, be equipped with the opening on the dustproof baffle, the opening bore is greater than the bore that the sampling joined, and the opening sets up with sampling joint coaxial center, and rotates along with the sampling joint, has both guaranteed the normal gas outlet of target gas outlet, has avoided the gaseous mixing of other gas outlets to the casing inside again, causes the error of sampling.

Further, the air channel outlet comprises a filter, and the filter can adsorb particles heavier than air, so that accumulated particles are prevented from blocking the air channel outlet, and the detection is prevented from being affected.

Further, a screen display is included to display the current position information of the sampling connector.

Furthermore, the shell comprises a lifting handle, so that the sampling equipment is convenient to carry, and the practicability of the equipment is improved.

The beneficial effects of the utility model are as follows: (1) The multipoint sampling or multipoint monitoring in the space is realized by only one sampling device, so that the interference of personnel to the sampling environment can be avoided, the labor cost is reduced, the personnel safety is ensured, and the problem of high cost caused by using a plurality of samplers is avoided;

(2) Air selectively enters the air inlet joint by controlling the opening and closing of the interception valve, so that the air inlet joint is relatively independent in work;

(3) The conical sampling connector can enable redundant gas flowing out of the gas outlet to flow through from the conical surface of the conical sampling connector when gas is sucked, so that other gases are dispersed, the other gases are prevented from entering the sampling connector, sampling errors are avoided, and the efficiency of multi-point sampling measurement is improved.

Drawings

FIG. 1 is a schematic perspective view of a multi-point air sampling apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an air inlet connector and a sampling device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a dust guard according to an embodiment of the present utility model;

FIG. 4 is a schematic flow diagram of an air inlet connector and a sampling connector according to an embodiment of the present utility model.

In the figure: 1. a housing; 2. an air inlet joint; 201. an air inlet; 202. an air outlet; 203. tooth-shaped convex parts; 3. an air path outlet; 4. a sampling device; 401. a sampling joint; 402. a sampling tube; 5. a retention valve; 6. a bi-directional stepper motor; 7. a dust-proof baffle; 701. an opening; 8. a screen; 9. the handle is held.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to fig. 1 and 2, a multipoint air sampling device in this embodiment includes a housing 1, a plurality of air inlet connectors 2 and at least one air channel outlet 3 are disposed on the housing 1, the air inlet connectors 2 have an air inlet 201 and an air outlet 202, a rotatable sampling device 4 is disposed in the housing 1, the sampling device 4 includes a sampling connector 401 and a sampling tube 402, one end of the sampling tube 402 is connected with the sampling connector 401, the other end is connected with the air channel outlet 3, after the sampling device 4 rotates, the sampling connector 401 can be opposite to the air outlet 202, a cut-off valve 5 is disposed in the air inlet connector 2, and a control switch for controlling the cut-off valve 5 is further included, one end of the sampling connector 401 corresponding to the air outlet 202 is conical, and the caliber of the sampling connector is the same as that of the air outlet 202. The multipoint sampling or multipoint monitoring in the space is realized by only one sampling device, so that the labor cost is reduced, the safety of personnel is ensured, and the problem of high cost caused by using a plurality of samplers is avoided; the air selectively enters the air inlet joint 2 by controlling the opening and closing of the interception valve 5, so that the air inlet joint 2 is relatively independent during working; the tapered sampling joint 401 can avoid other gases from entering the sampling joint 401, avoid sampling errors, and improve the efficiency of multipoint sampling measurement.

The working principle of the utility model is as follows: the multipoint air sampling device is provided with a plurality of air inlet joints 2, the air inlet joints 2 are externally connected with air inlet hoses, and the other ends of the air inlet hoses are placed at a plurality of places needing to be sampled; air is pumped from the air channel outlet 3 through an air pump and other air inlet mechanisms, the control circuit outputs a signal to control the stepping motor to drive forwards or reversely, so that the sampling connector 401 is adjusted to correspond to the target air inlet connector 2, and the corresponding air inlet connector 2 label is displayed on the display screen 8. Air sequentially enters the air inlet connector 2, the sampling connector 401, the sampling tube 402 and the detection equipment through the air inlet hose, the air inlet is closed by the interception valve 5 in the air inlet connector 2 outside the target air inlet connector 2 in the air inlet process, and the dustproof baffle 7 is arranged in the shell 1, so that the inflow of other air is further avoided. The conical sampling joint 401 can flow the redundant gas flowing out of the gas outlet 202 from the conical surface of the conical sampling joint 401 when sucking gas, disperse other gases, avoid other gases to enter the sampling joint 401, and avoid sampling errors.

In some embodiments, the sampling connector 401 is arranged in a non-contact manner with the air outlet 202, the sampling connector 401 is generally made of an aluminum material, when the air in the air inlet connector 2 is sucked, the sampling connector 401 is abutted with the air outlet 202 in the prior art, but when other air outlets 202 are converted, the sampling device 4 rotates, the sampling connector 401 rubs on the inner wall of the shell 1, the sampling connector 401 is worn after a long time, and by adopting the non-contact arrangement, the situation can be avoided, and the service life of the sampling connector 401 is prolonged.

In some embodiments, the angle sensor is included, and each time the sampling connector 401 rotates for a certain number of times, an accumulated angle deviation is generated, and the accumulated angle deviation may cause the sampling connector 401 to be not opposite to the air outlet 202, so that the sampling cannot be smoothly performed without error, the angle sensor can accurately sense the angle of the sampling connector 401, and the controller can timely correct the angle deviation of the sampling device 4.

In some embodiments, the air sampling device further comprises a bidirectional stepper motor 6, and the control circuit outputs a signal to control the stepper motor to drive forward or backward, and the stepper motor correspondingly drives the sampling device 4 to rotate forward or backward, so that the sampling connector 401 corresponds to different air inlet connectors 2, and air at different places is collected.

In some embodiments, be equipped with radially outwards bellied profile of tooth convex part 203 on the lateral wall of air inlet connector 2, air inlet connector 2 sealing joint is at the inner wall of sampling pipe, the direction conical surface structure of annular profile of tooth convex part 203 has the guide effect, the cross-section of direction conical surface structure is similar to the cockscomb structure, promptly when outer takeover cup joints in profile of tooth sealing washer, can get into smoothly along the direction conical surface structure, when reverse pulling, the pointed end of direction conical surface structure is with outer tub inner wall chucking, the frictional force that reverse pulling obviously becomes great, make reverse pulling need bigger force, effectively avoid outer takeover and inner catheter to receive external force and break the weeping gas leakage phenomenon that leads to, improve the security.

In some embodiments, a dust-proof baffle 7 is disposed between the sampling connector 401 and the air outlet 202, an opening 701 is disposed on the dust-proof baffle 7, the caliber of the opening 701 is larger than that of the sampling connector 401, and the opening 701 is disposed coaxially with the sampling connector 401 and rotates with the sampling connector 401. The normal air outlet of the target air outlet 202 is ensured, and sampling errors caused by mixing air of other air outlets 202 into the shell 1 are avoided.

In some embodiments, the air path outlet 3 includes a filter that can adsorb particles heavier than air, preventing accumulated particles from blocking the air path outlet 3, affecting the performance of the test.

In some embodiments, screen 8 displays are included to display current position information of sampling joint 401, allowing an operator to intuitively understand the area currently being sampled.

In some embodiments, the housing 1 includes a lifting handle 9, which facilitates the carrying of the sampling device and increases the practicality of using the device.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a multiple spot air sampling equipment, its characterized in that, includes the casing, be equipped with a plurality of air inlet joints and at least one gas circuit export on the casing, air inlet joint has air inlet and gas outlet, be equipped with rotatable sampling device in the casing, sampling device includes sampling joint and sampling tube, sampling tube one end is connected sampling joint, the other end is connected the gas circuit export, sampling device rotates the back, so that sampling joint corresponds the gas outlet, sampling joint corresponds the one end of gas outlet is the toper, and the bore is less than or equal to the gas outlet bore, along the air inlet direction, the toper diameter increases gradually.

2. The multipoint air sampling device of claim 1, wherein a check valve is disposed within the air intake fitting, further comprising a control switch that controls the check valve.

3. The multipoint air sampling device of claim 1, wherein the sampling nipple is positioned in non-contact with the air outlet.

4. The multipoint air sampling device of claim 1, comprising an angle sensor that corrects for angular misalignment of the sampling means.

5. The multipoint air sampling device of claim 1, further comprising a bi-directional stepper motor controlling rotation of the sampling means.

6. The multipoint air sampling device according to claim 1, wherein the outer side wall of the air inlet connector is provided with a tooth-shaped convex part protruding outwards in the radial direction, and the air inlet connector is clamped on the inner wall of the sampling tube in a sealing way.

7. The multipoint air sampling device according to claim 1, wherein a dustproof baffle is arranged between the sampling joint and the air outlet, an opening is arranged on the dustproof baffle, the caliber of the opening is larger than that of the sampling joint, and the opening and the sampling joint are coaxially arranged and rotate along with the sampling joint.

8. The multipoint air sampling device of claim 1, wherein the air path outlet comprises a filter.

9. The multipoint air sampling device of claim 1, comprising a screen display displaying current positional information of the sampling joint.

10. The multipoint air sampling device of claim 1, wherein the housing includes a carrying handle thereon.