CN215640426U - Sampler with layered structure for indoor environment detection - Google Patents

Abstract

The utility model discloses a sampler with a layered structure for indoor environment detection, which comprises a cylinder, a rubber block and an air outlet, wherein the air outlet is formed in the top end of the cylinder, a transmission structure is arranged at the top end of a piston, a multilayer structure is arranged on one side of the rubber block, the multilayer structure comprises a through pipe, an insertion block, a moving plate, a partition plate and a rotating cover, the through pipe is fixed on one side of the rubber block, and the moving plate is sleeved in the through pipe. According to the utility model, the through pipe is pulled to move backwards to the maximum distance, the moving plate drives the through pipe to move, the distance between the partition plates is expanded, the air pressure is reduced, the rotary cover is driven to open the partition plates for air extraction, after the air extraction is finished, a plurality of groups of samples are obtained through the partition plates, and the rotary cover is jacked open when the partition plates are close to each other through the insert block, so that the air pressure between the partition plates is balanced, thus the multi-layer sampling function of the device is realized, the sampling quantity of the device is increased, and the accuracy of the detection result is increased.

Description

Sampler with layered structure for indoor environment detection

Technical Field

The utility model relates to the technical field of samplers, in particular to a sampler with a layered structure for indoor environment detection.

Background

The indoor environment monitoring is to accurately, timely and comprehensively reflect scientific activities of indoor environment quality, the indoor environment is effectively planned and managed through a detection structure, indoor air is extracted through a sampler to detect the concentration of substances, and scientific basis is provided for the detection and control of the indoor environment;

chinese patent is granted No. CN211401834U, and announcement day 2020, 9.1.s discloses a gas sampler, including a piston cylinder, set up in piston in the piston cylinder, the second pore the one end fixedly connected with interchanger of piston cylinder, be equipped with the sealing washer between interchanger and the piston cylinder, the other end fixedly connected with piston cylinder lid of piston cylinder, the one end fixedly connected with pull rod of piston, the pull rod stretches out the piston cylinder lid, the pull rod stretches out the one end fixedly connected with handle of piston cylinder lid, the piston is made by cast iron, piston and piston cylinder clearance fit. The piston in the gas sampler is made of cast iron, and is matched with the piston cylinder in a hard-to-hard manner, so that a rubber ring is avoided, the piston is more uniformly abraded and stressed, the service life is prolonged, and the gas sampler also has the advantages of simple structure and lower cost;

the above prior art solutions have the following drawbacks; among the above-mentioned technical scheme, the defect that the device can't multilayer sample exists, and the in-process that the device was used is not convenient for divide into many samples and detects, leads to the single not accurate enough of testing result.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a sampler for indoor environment detection with a layered structure, which is used for solving the defect that the existing sampler for indoor environment detection is inconvenient for layered sampling.

(II) contents of utility model

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an indoor environment detects uses sample thief with layered structure, includes barrel, block rubber and gas outlet, the top of barrel all is provided with the gas outlet, the inside of barrel is provided with the piston, and the top of piston is provided with the transmission structure, one side of barrel is fixed with the connecting block, and the top of connecting block is fixed with the interchanger, one side of interchanger is fixed with the hole needle, the inside of interchanger is provided with the backflow prevention structure, one side of interchanger is provided with the block rubber, one side of block rubber is provided with multilayer structure, multilayer structure includes siphunculus, inserted block, movable plate, division board and rotatory lid, the siphunculus is fixed in one side of block rubber, the inside cover of siphunculus is equipped with the movable plate.

Preferably, the backflow prevention structure comprises a push plate, a screw rod, a compression spring, a loop bar and a shell, the shell is arranged in the exchanger, the loop bar is fixed in the shell, the screw rod is inserted in the loop bar, the push plate is fixed on one side of the screw rod, and the compression spring is arranged on one side of the push plate.

Preferably, the compression springs are symmetrically distributed on one side of the sleeve rod relative to the horizontal center line of the sleeve rod, and a sliding structure is formed between the screw rod and the sleeve rod.

Preferably, the both ends of siphunculus are fixed with the inserted block, the outside cover of siphunculus is equipped with the division board, and one side of division board installs rotatory lid.

Preferably, the through pipe and the insert block are located on the same horizontal line, and the thickness of the insert block is smaller than the width of the through pipe.

Preferably, the transmission structure comprises a screw, a limiting block, a casing and a hand wheel, the casing is fixed on one side of the piston, the limiting block is arranged inside the casing, the screw is fixed on one side of the limiting block, the hand wheel is installed on one side of the screw, and a moving block is sleeved on the outer side of the screw.

Preferably, the outer wall of the screw rod is provided with external threads, the inner wall of the moving block is provided with internal threads, and the screw rod and the moving block form a rotating structure through the meshing of the internal threads and the external threads.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: this indoor environment detects uses sample thief has not only realized the multilayer sample, has realized preventing the air reflux, has realized the transmission of making things convenient for moreover:

(1) the through pipe is pulled to move backwards to the maximum distance, the moving plate drives the through pipe to move, the distance between the partition plates is expanded, the air pressure is reduced, the rotating cover is driven to open the partition plates for air extraction, after the air extraction is finished, a plurality of groups of samples are obtained through the partition plates, the rotating cover is jacked open through the inserting blocks when the partition plates are close to each other, and the air pressure between the partition plates is balanced, so that the multi-layer sampling function of the device is realized, the sampling quantity of the device is increased, and the accuracy of a detection result is increased;

(2) the air enters the pushing push plate through the hole needle to exert a force on the compression spring, and then the lead screw is stressed to slide into the sleeve rod, so that the push plate is driven to be away from the air inlet, the air can smoothly enter, after the air is completely extracted, the pressure of the air is eliminated by loosening the piston, and then the compression spring pushes the push plate to block the air inlet, so that the function of preventing the air from flowing back of the device is realized, and the sampling speed of the device is improved;

(3) the hand wheel is rotated to drive the screw rod, and meanwhile, the screw rod is meshed with the thread of the movable block to enable the screw rod to move along the inside of the movable block, the limit block is pulled to drive the piston to extract an air sample, the limit is limited through the sleeve shell, the limit block is prevented from inclining in the moving process, the convenient transmission function of the device is achieved, the device is enabled to move more gently, and the convenience of the device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 3 is an enlarged partial cross-sectional view taken at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic structural view of the transmission structure of the present invention in front view and section;

fig. 5 is a schematic three-dimensional structure of the present invention.

The reference numerals in the figures illustrate: 1. a barrel; 2. connecting blocks; 3. an exchanger; 4. a hole needle; 5. a backflow prevention structure; 501. pushing the plate; 502. a screw rod; 503. a compression spring; 504. a loop bar; 505. a housing; 6. a rubber block; 7. a multilayer structure; 701. pipe passing; 702. inserting a block; 703. moving the plate; 704. a partition plate; 705. a rotating cover; 8. an air outlet; 9. a transmission structure; 901. a screw; 902. a limiting block; 903. a housing; 904. a hand wheel; 905. a moving block; 10. a piston.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, an embodiment of the present invention is shown: a sampler with a layered structure for indoor environment detection comprises a cylinder body 1, a rubber block 6 and an air outlet 8, wherein the top end of the cylinder body 1 is provided with the air outlet 8, the inside of the cylinder body 1 is provided with a piston 10, the top end of the piston 10 is provided with a transmission structure 9, one side of the cylinder body 1 is fixed with a connecting block 2, the top end of the connecting block 2 is fixed with an exchanger 3, one side of the exchanger 3 is fixed with a hole needle 4, the inside of the exchanger 3 is provided with an anti-backflow structure 5, one side of the exchanger 3 is provided with the rubber block 6, one side of the rubber block 6 is provided with a multilayer structure 7, the multilayer structure 7 comprises a through pipe 701, an insert block 702, a movable plate 703, a partition plate 704 and a rotary cover 705, the through pipe 701 is fixed at one side of the rubber block 6, the movable plate is sleeved inside the through pipe 701, the insert blocks 702 are fixed at two ends of the through pipe 701, the partition plate 704 is sleeved outside the through pipe 701, a rotating cover 705 is installed on one side of the partition plate 704, the through pipe 701 and the insert block 702 are located on the same horizontal line, so that the through pipe 701 drives the insert block 702 to move conveniently, and the thickness of the insert block 702 is smaller than the width of the through pipe 701, so that the insert block 702 can slide rapidly in the through pipe 701;

specifically, as shown in fig. 1 and 2, in use, a group of through pipes 701 are pulled by a piston 10 to move backwards, when the through pipes 701 are pulled to the maximum distance, a moving plate 703 drives a plurality of groups of through pipes 701 to move, so that the distance between partition plates 704 is expanded, the air pressure is reduced, two groups of rotating covers 705 are driven to rotate backwards to open the partition plates 704 for air extraction, after the air extraction is finished, the internal air is separated by the partition plates 704 to obtain a plurality of groups of samples, and the rotating covers 705 are pushed open by an insert block 702 when the partition plates 704 approach each other, so that the air pressure between the partition plates 704 is balanced;

the backflow prevention structure 5 comprises a push plate 501, a screw rod 502, a compression spring 503, a loop bar 504 and a shell 505, the shell 505 is arranged inside the exchanger 3, the loop bar 504 is fixed inside the shell 505, the screw rod 502 is inserted inside the loop bar 504, the push plate 501 is fixed on one side of the screw rod 502, the compression springs 503 are arranged on one sides of the push plate 501, the compression springs 503 are symmetrically distributed on one side of the loop bar 504 relative to the horizontal center line of the loop bar 504, so that the push plate 501 is balanced in the moving process, and a sliding structure is formed between the screw rod 502 and the loop bar 504, so that the guide of the screw rod 502 is facilitated, and the inclination is prevented;

specifically, as shown in fig. 1, fig. 2 and fig. 3, when in use, air enters through the hole needle 4 to push the push plate 501 to apply a backward pressing force to the compression spring 503, and then the lead screw 502 slides into the interior of the loop bar 504 under a force, so as to drive the push plate 501 to be away from the air inlet, so that the air enters smoothly, after extraction is completed, the pressure of the air disappears by loosening the piston 10, and then the compression spring 503 drives the lead screw 502 to slide out of the loop bar 504 to push the push plate 501 to block the air inlet;

the transmission structure 9 comprises a screw 901, a limit block 902, a casing 903 and a hand wheel 904, the casing 903 is fixed on one side of the piston 10, the limit block 902 is arranged inside the casing 903, the screw 901 is fixed on one side of the limit block 902, the hand wheel 904 is installed on one side of the screw 901, a moving block 905 is sleeved outside the screw 901, an external thread is arranged on the outer wall of the screw 901, an internal thread is arranged on the inner wall of the moving block 905, the screw 901 and the moving block 905 form a rotation structure through the meshing of the internal thread and the external thread, and the screw 901 can move inside the moving block 905 conveniently;

specifically, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, during use, the hand wheel 904 is rotated to drive the screw 901 to rotate, and simultaneously, the screw 901 is in threaded engagement with the moving block 905 to move the screw 901 to one side along the inside of the moving block 905, and then the limit block 902 is pulled to drive the piston 10 to extract an air sample by the limit block 902, so that the limit is performed through the casing 903, and the limit block 902 is prevented from being inclined in the moving process.

The working principle is as follows: when the device is used, firstly, the hand wheel 904 is rotated to enable the hand wheel 904 to drive the screw 901 to rotate, meanwhile, the screw 901 is in threaded engagement with the moving block 905 to enable the screw 901 to move to one side along the inside of the moving block 905, and then the limiting block 902 is pulled to enable the limiting block 902 to drive the piston 10 to extract an air sample, so that the limiting is performed through the casing 903, the limiting block 902 is prevented from inclining in the moving process, and the transmission function of the device is completed;

secondly, a group of through pipes 701 are pulled to move backwards through a piston 10, when the through pipes 701 are pulled to the maximum distance, a plurality of groups of through pipes 701 are driven to move through a moving plate 703, the distance between partition plates 704 is expanded, air pressure is reduced, two groups of rotating covers 705 are driven to rotate backwards to open the partition plates 704 for air suction, after air suction is finished, internal air is separated through the partition plates 704 to obtain a plurality of groups of samples, the rotating covers 705 are jacked open when the partition plates 704 approach each other through an inserting block 702, air pressure between the partition plates 704 is balanced, and the multi-layer function of the device is completed;

finally, extract the air through piston 10, make the air get into through hole needle 4 and promote push pedal 501 to exert the power of a backward pressure to compression spring 503, the inside of lead screw 502 atress cunning loop bar 504 follows back, thereby it keeps away from the air inlet to drive push pedal 501, make the air intake unobstructed, after the extraction finishes, through loosening piston 10, make the pressure of air disappear, then compression spring 503 drives lead screw 502 roll-off loop bar 504 and promotes push pedal 501 and plug up the air inlet, accomplish the device's anti-reflux function, accomplish the use work of this indoor environment detects with sample thief finally.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides an indoor environment detects uses sample thief with layered structure, includes barrel (1), block rubber (6) and gas outlet (8), its characterized in that: the top end of the cylinder body (1) is provided with an air outlet (8), a piston (10) is arranged inside the cylinder body (1), the top end of the piston (10) is provided with a transmission structure (9), one side of the cylinder body (1) is fixedly provided with a connecting block (2), and the top end of the connecting block (2) is fixedly provided with an exchanger (3);

a hole needle (4) is fixed on one side of the exchanger (3), an anti-backflow structure (5) is arranged inside the exchanger (3), and a rubber block (6) is arranged on one side of the exchanger (3);

one side of rubber block (6) is provided with multilayer structure (7), multilayer structure (7) are including siphunculus (701), inserted block (702), movable plate (703), division board (704) and rotatory lid (705), siphunculus (701) are fixed in one side of rubber block (6), the inside cover of siphunculus (701) is equipped with movable plate (703).

2. The sampler for indoor environment detection having a layered structure according to claim 1, characterized in that: backflow prevention structure (5) include push pedal (501), lead screw (502), compression spring (503), loop bar (504) and shell (505), shell (505) set up the inside at interchanger (3), the inside of shell (505) is fixed with loop bar (504), and the inside of loop bar (504) is inserted and is equipped with lead screw (502), one side of lead screw (502) is fixed with push pedal (501), and one side of push pedal (501) all is provided with compression spring (503).

3. The sampler for indoor environment detection having a layered structure according to claim 2, characterized in that: the compression springs (503) are symmetrically distributed on one side of the sleeve rod (504) relative to the horizontal center line of the sleeve rod (504), and a sliding structure is formed between the screw rod (502) and the sleeve rod (504).

4. The sampler for indoor environment detection having a layered structure according to claim 1, characterized in that: the two ends of the through pipe (701) are fixed with inserting blocks (702), the outer side of the through pipe (701) is sleeved with a separation plate (704), and one side of the separation plate (704) is provided with a rotary cover (705).

5. The sampler for indoor environment detection having a layered structure according to claim 4, wherein: the through pipe (701) and the insert block (702) are located on the same horizontal line, and the thickness of the insert block (702) is smaller than the width of the through pipe (701).

6. The sampler for indoor environment detection having a layered structure according to claim 1, characterized in that: the transmission structure (9) comprises a screw rod (901), a limiting block (902), a casing (903) and a hand wheel (904), the casing (903) is fixed on one side of the piston (10), the limiting block (902) is arranged inside the casing (903), the screw rod (901) is fixed on one side of the limiting block (902), the hand wheel (904) is installed on one side of the screw rod (901), and a moving block (905) is sleeved on the outer side of the screw rod (901).

7. The sampler for indoor environment detection having a layered structure according to claim 6, characterized in that: the outer wall of the screw rod (901) is provided with external threads, the inner wall of the moving block (905) is provided with internal threads, and the screw rod (901) and the moving block (905) form a rotating structure through meshing of the internal threads and the external threads.