Dust sampling device for environmental detection

Abstract

The utility model discloses an environment detection dust sampling device which comprises a frame body and a sampling bottle, the frame body is provided with an inner cavity, a turntable is rotatably arranged in the inner cavity, a plurality of sliding grooves are concavely formed in the side wall of the turntable along the circumferential direction at intervals, an air inlet pipe is eccentrically and fixedly arranged at the top of the inner cavity in a penetrating manner, and an air outlet hole is formed in the bottom of the inner cavity and below the air inlet pipe; an air outlet hole is formed in the inner cavity, an exhaust fan is fixedly installed in the air outlet hole, a notch is formed in the side wall of the inner cavity, the multiple sampling bottles are arranged and embedded in the corresponding sliding grooves in a sliding mode, air channels are formed in the sampling bottles in the vertical direction, and filter paper is arranged in the sampling bottles in the transverse direction. By means of the arrangement, the multiple sampling bottles are sequentially communicated with the air inlet pipe and the air outlet hole by rotating the rotating disc, the purpose of collecting multiple samples at a time is achieved, meanwhile, sampling personnel can conveniently install the sampling bottles, operation steps are saved, and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental detection, and in particular relates to an environmental detection dust sampling device. Background Art

[0002] Dust refers to solid particles suspended in the air. In life and work, when the dust concentration in the air is high, it will be the main cause of many diseases. Therefore, it is necessary to sample and test the dust in the environment.

[0003] A Chinese patent with publication number CN218381930U discloses a dust sampler for environmental testing, which includes a box body, a sampling hole and a plurality of storage holes are arranged on the top of the box body, filter cartridges are arranged in the sampling hole and the plurality of storage holes, a suction assembly is arranged on the top of the sampling hole, and the top of the storage hole is closed by a cover plate. The above scheme uses the suction assembly to collect dust in the filter cartridge in the sampling hole, and puts the sampled filter cartridge into the storage hole, and at the same time takes out the filter cartridge in the storage hole and puts it into the sampling hole for the next sampling, thereby achieving the purpose of collecting multiple samples at the same time.

[0004] When the above solution is used, it is necessary to manually extract and place the filter cartridge in the sampling hole repeatedly, and replace the filter cartridge in the sampling hole with the filter cartridge in the storage hole. This operation step is relatively cumbersome and the sampling efficiency is low. Utility Model Content

[0005] The utility model aims to provide an environmental detection dust sampling device to solve the problems of complicated operation steps and low sampling efficiency in the above-mentioned solution.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dust sampling device for environmental detection includes a frame body and a sampling bottle, the frame body has an inner cavity, a turntable is rotatably arranged in the inner cavity, a plurality of slide grooves are recessed on the side wall of the turntable along its circumferential interval, an air inlet pipe is eccentrically fixedly penetrated through the top of the inner cavity, an air outlet is arranged at the bottom of the inner cavity below the air inlet pipe, an exhaust fan is fixedly installed in the air outlet, a notch is arranged on the side wall of the inner cavity, a plurality of sampling bottles are arranged, and each sampling bottle is slidably embedded in a corresponding slide groove, an air duct is vertically formed on the inner edge of the sampling bottle, and filter paper is horizontally arranged on the inner edge of the sampling bottle.

[0008] The principle and effect of this technical solution:

[0009] Place the sampling bottle into the chute through the gap and rotate the turntable intermittently. When the next adjacent chute is aligned with the gap, put in the next sampling bottle. During this process, the first placed sampling bottle will move to the bottom of the air inlet pipe. At this time, the turntable stops rotating. The air duct in the sampling bottle is connected with the air inlet pipe and the air outlet. The exhaust fan allows the air in the external environment to flow into the air duct through the air inlet pipe and be discharged through the filter paper and the air outlet. The filter paper collects the dust in the air. After a sampling time is reached, continue to rotate the turntable to move the next sampling bottle to the bottom of the air inlet pipe.

[0010] Through the above arrangement, multiple sampling bottles are connected to the air inlet pipe and the air outlet in sequence by rotating the turntable, thereby achieving the purpose of collecting multiple samples at one time. At the same time, it is convenient for sampling personnel to install the sampling bottles, saving operating steps and improving sampling efficiency.

[0011] In the utility model, the sampling bottle includes a bottle body and a bottle stopper, the top of the bottle body is open, and the bottom of the bottle body is hollow, a through hole is provided on the top of the bottle stopper, the bottle body and the bottle stopper are threadedly connected, and the filter paper is placed at the bottom of the bottle body.

[0012] In the utility model, a countersunk hole is provided at the top of the through hole, a hollow one-way valve core is slidably inserted into the through hole, the bottom and top of the side wall of the one-way valve core are open, a first compression spring is sleeved between the bottom of the countersunk hole and the top of the one-way valve core outside the one-way valve core, and the bottom of the bottle body is slidably abutted against the bottom of the inner cavity.

[0013] In the utility model, an annular groove is provided at the bottom of the inner cavity at the periphery of the air outlet, a connecting plate is provided on the sliding sleeve around the inner wall of the groove, a second compression spring is provided between the connecting plate and the bottom of the groove, and an arc surface is provided on the top of the outer wall of the connecting plate.

[0014] In the utility model, a connecting block is fixedly provided at one end of the air inlet pipe extending into the inner cavity, a guide inclined surface is provided on the side of the connecting block facing the moving direction of the sampling bottle, and an arc surface is provided on the outer periphery of the top of the one-way valve core.

[0015] The principle and effect of this technical solution:

[0016] In the initial state, under the action of the first compression spring, the bottom of the one-way valve core abuts against the bottom of the bottle stopper, and the opening on the side wall of the one-way valve core is located in the through hole. In the process of rotating the turntable to move the sampling bottle to the bottom of the air inlet pipe, the guide slope of the connecting block contacts the arc surface of the top of the one-way valve core, pushing the one-way valve core to move downward. At the same time, the bottom of the bottle body contacts the arc surface of the side wall of the connecting plate, and pushes the connecting plate to move downward, so that the second compression spring has elastic force. When the air inlet pipe is aligned with the one-way valve core, the opening on the side wall of the one-way valve core is located in the bottle body, and the second compression spring pushes the connecting plate against the bottom of the bottle body, starting the exhaust fan, so that the air in the external environment passes through the air inlet pipe, air duct and filter paper this time. After the sampling is completed, continue to rotate the turntable to move the sampling bottle away from the air inlet pipe, and the one-way valve core is reset under the action of the first compression spring.

[0017] Through the above arrangement, it can be ensured that external air only flows into the sampling bottle through the air inlet pipe during sampling, which makes it convenient for the sampling personnel to control the air intake volume flowing into the sampling bottle.

[0018] In the utility model, the side wall of the slide groove is fixedly provided with a slide rail, and the side wall of the bottle plug is concavely provided with a connecting groove matched with the slide rail along its circumference. When the side wall of the bottle plug abuts against the end wall of the slide groove, the side wall of the bottle plug also slides against the side wall of the inner cavity. Through the above arrangement, it can ensure that the sampling bottle moves along the circumference, and then ensure that the one-way valve core can be aligned with the air inlet pipe, thereby improving the practicality of the utility model.

[0019] In the utility model, a driving member is fixedly arranged at the bottom of the frame body, a rotating shaft is fixedly arranged at the bottom of the turntable along its axial direction, the rotating shaft is rotatably arranged at the bottom of the frame body, and is transmission-connected with the driving member. Through the above arrangement, it is convenient for the sampling personnel to rotate the turntable, and the sampling efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the axonometric drawing of the utility model;

[0021] Figure 2 This is an axonometric cross-sectional view of the utility model;

[0022] Figure 3 It is a side sectional view of the utility model;

[0023] Figure 4 This is an exploded view of some parts of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0025] The figure marks in the drawings of the specification include: 10, frame body; 11, inner cavity; 12, air inlet pipe; 121, connecting block; 13, air outlet; 14, exhaust fan; 15, notch; 16, groove; 17, connecting plate; 20, turntable; 21, slide groove; 211, slide rail; 22, rotating shaft; 30, sampling bottle; 31, air duct; 32, bottle body; 33, bottle stopper; 331, through hole; 332, countersunk hole; 333, connecting groove; 40, filter paper; 50, one-way valve core; 61, first compression spring; 62, second compression spring; 70, driving member.

[0026] As attached Figure 1-4 As shown, the utility model discloses an environmental detection dust sampling device, including a frame body 10 and a sampling bottle 30, the frame body 10 has an inner cavity 11, a turntable 20 is rotatably arranged in the inner cavity 11, and a plurality of slide grooves 21 are recessed on the side wall of the turntable 20 along its circumferential interval, an air inlet pipe 12 is eccentrically fixedly penetrated through the top of the inner cavity 11, an air outlet hole 13 is arranged at the bottom of the inner cavity 11 below the air inlet pipe 12, an exhaust fan 14 is fixedly installed in the air outlet hole 13, a notch 15 is arranged on the side wall of the inner cavity 11, a plurality of sampling bottles 30 are arranged, and each sampling bottle 30 is slidably embedded in the corresponding slide groove 21, an air duct 31 is formed vertically along the inner edge of the sampling bottle 30, and a filter paper 40 is arranged horizontally along the inner edge of the sampling bottle 30.

[0027] In this embodiment, the sampling bottle 30 includes a bottle body 32 and a bottle stopper 33. The top of the bottle body 32 is open and the bottom of the bottle body 32 is hollow. A through hole 331 is provided on the top of the bottle stopper 33. The bottle body 32 and the bottle stopper 33 are threadedly connected, and the filter paper 40 is placed at the bottom of the bottle body 32.

[0028] In this embodiment, a countersunk hole 332 is provided at the top of the through hole 331, and a hollow one-way valve core 50 is slidably inserted into the through hole 331. The bottom and top of the side wall of the one-way valve core 50 are open, and a first compression spring 61 is sleeved between the bottom of the countersunk hole 332 and the top of the one-way valve core 50 outside the one-way valve core 50, and the bottom of the bottle body 32 is slidably abutted against the bottom of the inner cavity 11.

[0029] In this embodiment, an annular groove 16 is concavely provided at the bottom of the inner cavity 11 on the outer periphery of the air outlet hole 13, a connecting plate 17 is slidingly sleeved on the inner wall outer periphery of the groove 16, a second compression spring 62 is provided between the connecting plate 17 and the bottom of the groove 16, and an arc surface is provided on the top of the outer wall of the connecting plate 17.

[0030] In this embodiment, a connecting block 121 is fixedly provided at one end of the air inlet pipe 12 extending into the inner cavity 11, and a guide slope is provided on the side of the connecting block 121 facing the moving direction of the sampling bottle 30, and an arc surface is provided on the outer periphery of the top of the one-way valve core 50.

[0031] In this embodiment, the side wall of the slide groove 21 is fixedly provided with a slide rail 211, and the side wall of the bottle stopper 33 is circumferentially recessed with a connecting groove 333 that cooperates with the slide rail 211. When the side wall of the bottle stopper 33 abuts against the end wall of the slide groove 21, the side wall of the bottle stopper 33 also slides against the side wall of the inner cavity 11.

[0032] In this embodiment, a driving member 70 is fixedly provided at the bottom of the frame body 10 , and a rotating shaft 22 is fixedly provided at the bottom of the turntable 20 along its axial direction. The rotating shaft 22 rotatably penetrates the bottom of the frame body 10 and is transmission-connected to the driving member 70 .

[0033] The specific implementation process is as follows:

[0034] Place the sampling bottle 30 into the chute 21 through the gap 15, and rotate the turntable 20 intermittently. When the next adjacent chute 21 is aligned with the gap 15, place the next sampling bottle 30 again. During this process, the first placed sampling bottle 30 will move to the bottom of the air inlet pipe 12. At this time, the turntable 20 stops rotating. The air duct 31 in the sampling bottle 30 is connected with the air inlet pipe 12 and the air outlet 13. The exhaust fan 14 allows the air in the external environment to flow into the air duct 31 through the air inlet pipe 12 and be discharged through the filter paper 40 and the air outlet 13. The filter paper 40 collects the dust in the air. After a sampling time is reached, continue to rotate the turntable 20 to move the next sampling bottle 30 to the bottom of the air inlet pipe 12.

[0035] In the initial state, under the action of the first compression spring 61, the bottom of the one-way valve core 50 abuts against the bottom of the bottle stopper 33, and the opening on the side wall of the one-way valve core 50 is located in the through hole 331. When the turntable 20 is rotated to move the sampling bottle 30 to the bottom of the air inlet pipe 12, the guide inclined surface of the connecting block 121 contacts the arc surface of the top of the one-way valve core 50, pushing the one-way valve core 50 to move downward, and at the same time, the bottom of the bottle body 32 contacts the arc surface of the side wall of the connecting plate 17, and pushes the connecting plate 17 to move downward. The second compression spring 62 moves so that the second compression spring 62 has elastic force. When the air inlet pipe 12 is aligned with the one-way valve core 50, the opening on the side wall of the one-way valve core 50 is located in the bottle body 32. The second compression spring 62 pushes the connecting plate 17 to press against the bottom of the bottle body 32, and the exhaust fan 14 is started to make the air in the external environment pass through the air inlet pipe 12, the air duct 31 and the filter paper 40. After the sampling is completed, the turntable 20 continues to rotate to make the sampling bottle 30 away from the air inlet pipe 12, and the one-way valve core 50 is reset under the action of the first compression spring 61.

[0036] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An environmental detection dust sampling device, characterized in that: include: The frame body has an inner cavity, a turntable is rotatably arranged in the inner cavity, a plurality of slide grooves are concavely arranged at intervals along the circumference of the turntable side wall, an air inlet pipe is eccentrically fixedly penetrated through the top of the inner cavity, an air outlet hole is arranged at the bottom of the inner cavity below the air inlet pipe, an exhaust fan is fixedly installed in the air outlet hole, and a notch is arranged on the side wall of the inner cavity; The sampling bottle is provided with a plurality of sampling bottles, and each sampling bottle is slidably embedded in a corresponding slide groove, an air duct is formed vertically along the inner edge of the sampling bottle, and filter paper is horizontally arranged along the inner edge of the sampling bottle.

2. The environmental detection dust sampling device according to claim 1, characterized in that: The sampling bottle comprises a bottle body and a bottle stopper. The top of the bottle body is open and the bottom of the bottle body is hollow. The top of the bottle stopper is provided with a through hole. The bottle body and the bottle stopper are threadedly connected. The filter paper is placed at the bottom of the bottle body.

3. The environmental detection dust sampling device according to claim 2, characterized in that: A countersunk hole is provided at the top of the through hole, and a hollow one-way valve core is slidably inserted into the through hole. The bottom and top of the side wall of the one-way valve core are open, and a first compression spring is sleeved between the bottom of the countersunk hole and the top of the one-way valve core outside the one-way valve core. The bottom of the bottle body is in sliding contact with the bottom of the inner cavity.

4. The environmental detection dust sampling device according to claim 3, characterized in that: The bottom of the inner cavity is provided with an annular groove at the periphery of the air outlet, the inner wall periphery of the groove is slidingly sleeved with a connecting plate, a second compression spring is provided between the connecting plate and the bottom of the groove, and the top of the outer wall of the connecting plate is provided with an arc surface.

5. The environmental detection dust sampling device according to claim 4, characterized in that: A connecting block is fixedly arranged at one end of the air inlet pipe extending into the inner cavity, a guiding inclined surface is arranged on the side of the connecting block facing the moving direction of the sampling bottle, and an arc surface is arranged on the outer periphery of the top of the one-way valve core.

6. The environmental detection dust sampling device according to claim 3, characterized in that: The side wall of the slide groove is fixedly provided with a slide rail, and the side wall of the bottle stopper is concavely provided with a connecting groove matching the slide rail along its circumference. When the side wall of the bottle stopper abuts against the end wall of the slide groove, the side wall of the bottle stopper also slides and abuts against the side wall of the inner cavity.

7. The environmental detection dust sampling device according to claim 1, characterized in that: A driving component is fixedly arranged at the bottom of the frame body, a rotating shaft is fixedly arranged at the bottom of the turntable along its axial direction, the rotating shaft is rotatably penetrated through the bottom of the frame body, and is drivingly connected with the driving component.

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