Novel dust sampler

Abstract

The utility model provides a novel dust sampler. Relates to the technical field of dust collection. The novel dust sampler comprises a dust sampler body and a sampling head arranged on the dust sampler body, a sealing cover is arranged on one side of the sampling head, an air inlet is formed in the sealing cover, an annular connecting sleeve is arranged in the sampling head, the annular connecting sleeve makes contact with the inner ring wall of the sampling head, and the sampling head is connected with the annular connecting sleeve. One side of the annular connection sleeve is in contact with the sealing cover, a filter membrane is fixedly installed in the annular connection sleeve, two positioning insertion rods are fixedly installed on the side, in contact with the sealing cover, of the annular connection sleeve, the two positioning insertion rods penetrate through the sealing cover and are in sliding connection with the sealing cover, positioning grooves are formed in the two positioning insertion rods, and the two positioning insertion rods are in sliding connection with the sealing cover. Two support plates are fixedly mounted on one side, far away from the sampling head, of the sealing cover. The utility model has the advantages that the filter membrane can be disassembled gently, dust is prevented from falling off to the greatest extent, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collection, in particular to a novel dust sampler. Background Art

[0002] A dust sampler is a portable device that can collect dust samples in the air. It can provide a scientific basis for studying dust prevention, dust reduction, and dust removal measures. When in use, it will inhale air through its internal high-performance air pump, and then use the filter membrane in the collection head to collect the dust in the air. Finally, the collected filter membrane is weighed to know the dust content.

[0003] However, when using common dust samplers, it was found that since the collection head on it is installed on the sampler housing in a spiral manner, it still needs to be removed in a spiral manner after collection is completed. During the spiral removal process, rotational stress is likely to occur, or the spiral speed is too fast and inertia occurs due to shaking, causing dust on the filter membrane to fall off, thereby reducing the detection accuracy.

[0004] Therefore, it is necessary to provide a new type of dust sampler to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a novel dust sampler which can smoothly remove the filter membrane, avoid dust falling to the greatest extent, and improve the detection accuracy.

[0006] In order to solve the above technical problems, the new dust sampler provided by the present invention comprises: a dust sampler body and a sampling head arranged on the dust sampler body, a sealing cover is provided on one side of the sampling head, an air inlet is provided on the sealing cover, a ring sleeve is provided in the sampling head, the ring sleeve is in contact with the inner ring wall of the sampling head, and one side of the ring sleeve is in contact with the sealing cover, a filter membrane is fixedly installed in the ring sleeve, two positioning rods are fixedly installed on the side of the ring sleeve in contact with the sealing cover, both of the positioning rods pass through the sealing cover and are slidably connected to the sealing cover, positioning grooves are provided on the two positioning rods, and two positioning rods are fixedly installed on the side of the sealing cover away from the sampling head The support plate, the two support plates are slidably installed with an embedding rod, the ends of the two embedding rods close to each other extend into the two positioning grooves respectively, and the embedding rods are adapted to the positioning grooves, and the ends of the two embedding rods away from each other are fixedly installed with a linkage slider, and the two linkage sliders are fit with the sealing cover, and the two embedding rods are each sleeved with a first return spring, the ends of the two first return springs close to each other are fixedly connected to the two support plates respectively, and the ends away from each other are fixedly connected to the two linkage sliders respectively, a folding plate is fixedly installed on the top of the dust sampler body, a guide column is slidably installed on the folding plate, and one end of the guide column is fixedly connected to the sealing cover.

[0007] Preferably, the two linked sliding blocks are provided with a right-angled triangular inner groove on the side away from the sampling head, and two push rods are slidably installed on the cover, and the two push rods are fixedly installed with the same movable ring on one end close to the dust sampler body, and the sampling head is located in the movable ring, and the two push rods are fixedly installed with a connecting strip on the end away from the dust sampler body, and the two connecting strips are fixedly installed with a wedge-shaped pushing block on the side close to the cover, and the two wedge-shaped pushing blocks are respectively adapted to the two right-angled triangular inner grooves.

[0008] Preferably, the two push rods are each sleeved with a second return spring, one end of the two second return springs is fixedly connected to the cover, and the other end is fixedly connected to the movable ring.

[0009] Preferably, a retaining groove is provided on the guide column, a half-thread screw is threadedly mounted on the folding plate, and the bottom end of the half-thread screw extends into the retaining groove.

[0010] Preferably, two shuttle openings are provided on the cover, and the two positioning rods respectively pass through the two shuttle openings and contact the inner walls of the corresponding shuttle openings.

[0011] Preferably, a third return spring is sleeved on the guide column, one end of the third return spring is fixedly connected to the cover, and the other end is fixedly connected to the folding plate.

[0012] Compared with related technologies, the new dust sampler provided by the utility model has the following beneficial effects:

[0013] The utility model provides a new type of dust sampler. Through the sliding between the positioning rod and the sealing cover, when the ring sleeve is removed, it is only necessary to press the connecting strip to bring the embedded rod out of the positioning groove. The removal process will not generate any torsional stress and is relatively smooth, thereby preventing the dust on the filter membrane from falling to the greatest extent, thereby improving the accuracy of subsequent dust content detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of the novel dust sampler provided by the present utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the sampling head and the ring sleeve in the present invention;

[0016] Figure 3 This is a schematic diagram of the connection structure between the cover and the guide post in the present invention;

[0017] Figure 4 This is a schematic diagram of the assembly of the sealing cover and the ring sleeve in the present invention;

[0018] Figure 5 This is a schematic diagram of the cross-sectional connection structure of the sealing cover and the ring sleeve in the present invention;

[0019] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A shown;

[0020] Figure 7 This is a schematic diagram of the connection structure between the folding plate and the half-thread screw in the utility model.

[0021] Numbers in the figure: 1. Dust sampler body; 2. Sampling head; 3. Sealing cover; 4. Air inlet; 5. Ring sleeve; 6. Filter membrane; 7. Positioning rod; 8. Positioning groove; 9. Support plate; 10. Embedded rod; 11. Linkage slider; 12. First return spring; 13. Right-angled triangular inner groove; 14. Movable collar; 15. Push rod; 16. Connecting strip; 17. Wedge-shaped push block; 18. Second return spring; 19. Folding plate; 20. Guide column; 21. Third return spring; 22. Positioning groove; 23. Half-thread screw. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0023] Please refer to Figure 1-Figure 7The new dust sampler includes: a dust sampler body 1 of model IFC-2 and a sampling head 2 arranged on the dust sampler body 1, a cover 3 is provided on one side of the sampling head 2, an air inlet 4 is provided on the cover 3, which can correspond to the sampling head 2 to ensure that the gas has a flow path, and a ring sleeve 5 is provided in the sampling head 2, the ring sleeve 5 is in contact with the inner wall of the sampling head 2, and one side of the ring sleeve 5 is in contact with the cover 3, a filter membrane 6 is fixedly installed in the ring sleeve 5, and on the side of the ring sleeve 5 in contact with the cover 3 There are two fixed positioning rods 7, which are designed as a whole with the ring sleeve 5, and the two positioning rods 7 pass through the cover 3 and are slidably connected to the cover 3. Positioning grooves 8 are provided on the two positioning rods 7. Two support plates 9 are fixedly installed on the side of the cover 3 away from the sampling head 2. There are embedded rods 10 slidably installed on the two support plates 9. The ends of the two embedded rods 10 close to each other extend into the two positioning grooves 8 respectively, and the embedded rods 10 are adapted to the positioning grooves 8, so that the fixed connection between the ring sleeve 5 and the cover 3 can be achieved. To achieve a fixed effect, a linkage slider 11 is fixedly installed at one end of the two embedded rods 10 that are away from each other. The two linkage sliders 11 are both fitted with the cover 3, and a first return spring 12 is sleeved on the two embedded rods 10. The ends of the two first return springs 12 that are close to each other are fixedly connected to the two support plates 9, and the ends that are away from each other are fixedly connected to the two linkage sliders 11. This ensures that the embedded rod 10 can be firmly inserted into the positioning groove 8. A folding plate 19 is fixedly installed on the top of the dust sampler body 1, and slides on it. A guide column 20 is installed, one end of which is fixedly connected to the cover 3, and a third return spring 21 is sleeved on the guide column 20, one end of the third return spring 21 is fixedly connected to the cover 3, and the other end is fixedly connected to the folding plate 19, and a clamping groove 22 is opened on the guide column 20, and a half-thread screw 23 is threadedly installed on the folding plate 19, and the smooth section at the bottom of the half-thread screw 23 extends into the clamping groove 22, so that the cover 3 is stably fixed in the specified position, so that it fits tightly with the sampling head 2 to ensure sealing.

[0024] In the above method, in order to quickly and easily bring the two embedded rods 10 out of the positioning groove 8, a right-angled triangular inner groove 13 is provided on the side of the two linkage sliders 11 away from the sampling head 2, and two push rods 15 are slidably installed on the cover 3. The two push rods 15 are fixedly installed with the same movable ring 14 at one end close to the dust sampler body 1, and the sampling head 2 is located in the movable ring 14, and the two push rods 15 are fixedly installed with a connecting strip 16 at one end away from the dust sampler body 1, and the two connecting strips 16 are fixedly installed with a wedge-shaped pushing block 17 on the side close to the cover 3. The pushing blocks 17 are respectively adapted to the two right-angled triangular inner grooves 13. By utilizing the plug-in cooperation between the wedge-shaped pushing blocks 17 and the right-angled triangular inner grooves 13, the linkage slider 11 can be automatically pushed, and the embedded rod 10 can be conveniently and quickly brought out of the positioning groove 8. In addition, a second return spring 18 is provided on each of the two pushing rods 15. One end of the two second return springs 18 is fixedly connected to the cover 3, and the other end is fixedly connected to the movable collar 14. In this way, after the wedge-shaped pushing block 17 is used, the elastic force of the second return spring 18 can be used to automatically bring it back to its original position to facilitate normal use next time.

[0025] In this embodiment, in order to ensure stable sliding between the positioning rod 7 and the cover 3, two shuttle openings are opened on the cover 3, and the two positioning rods 7 pass through the two shuttle openings respectively and contact the inner walls of the corresponding shuttle openings.

[0026] The working principle of the new dust sampler provided by this utility model is as follows:

[0027] In the initial state, the third return spring 21 is in a compressed state;

[0028] When sampling dust, the dust sampler body 1 is directly started, the air pump inside it will pump air, the outside air enters through the sampling head 2, and the filter membrane 6 can intercept the dust in the air;

[0029] After the sampling is completed, first hold the cover 3 with one hand, and with the other hand, rotate the half-thread screw 23 to move the half-thread screw 23 out of the positioning groove 22. At this time, the guide column 20 loses the grip of the foreign object, and then guides along the elastic direction of the third return spring 21 to slowly separate the cover 3 from the sampling head 2. At this time, the annular sleeve 5 connected to the cover 3 gradually moves out of the sampling head 2 until the third return spring 21 rebounds to the maximum position. At this time, the annular sleeve 5 is completely removed from the sampling head 2. Subsequently, the half-thread screw 23 is screwed so that its bottom end contacts the outer wall of the guide column 20, thereby limiting the cover 3 to this state position.

[0030] Then, press the two connecting strips 16 and push the two wedge-shaped pushing blocks 17 into the corresponding right-angled triangular inner grooves 13. When the two are in contact, sliding friction occurs, causing the two linked sliders 11 to move away from each other, and finally bring the two embedded rods 10 out of the corresponding positioning grooves 8. At this time, the first return spring 12 and the second return spring 18 are both in a stretched state, and after the embedded rod 10 is brought out, the positioning rod 7 loses the grip of foreign objects, and then the annular sleeve 5 can be directly and smoothly pulled out. At this time, the filter membrane 6 is not disturbed by too much external force, and then it can be weighed and tested.

[0031] Compared with related technologies, the new dust sampler provided by the utility model has the following beneficial effects:

[0032] The present invention provides a new type of dust sampler. By sliding between the positioning rod 7 and the cover 3, when the annular sleeve 5 is removed, it is only necessary to press the connecting strip 16 to bring the embedded rod 10 out of the positioning groove 8. The removal process will not generate any torsional stress and is relatively smooth, thereby preventing the dust on the filter membrane 6 from falling to the greatest extent, thereby improving the accuracy of subsequent dust content detection.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new type of dust sampler, comprising a dust sampler body and a sampling head arranged on the dust sampler body, characterized in that: A sealing cover is provided on one side of the sampling head, an air inlet is provided on the sealing cover, a ring sleeve is provided in the sampling head, the ring sleeve is in contact with the inner wall of the sampling head, and one side of the ring sleeve is in contact with the sealing cover, a filter membrane is fixedly installed in the ring sleeve, and two positioning rods are fixedly installed on the side of the ring sleeve in contact with the sealing cover, both of the positioning rods pass through the sealing cover and are slidably connected to the sealing cover, and positioning grooves are provided on both positioning rods, and two support plates are fixedly installed on the side of the sealing cover away from the sampling head, and clamping rods are slidably installed on the two support plates. The ends of the rods that are close to each other extend into the two positioning grooves respectively, and the embedded rods are adapted to the positioning grooves, and the ends of the two embedded rods that are away from each other are fixedly installed with a linkage slider, and the two linkage sliders are both fitted with the cover, and the two embedded rods are each sleeved with a first return spring, and the ends of the two first return springs that are close to each other are fixedly connected to the two support plates respectively, and the ends that are away from each other are fixedly connected to the two linkage sliders respectively, a folding plate is fixedly installed on the top of the dust sampler body, a guide column is slidably installed on the folding plate, and one end of the guide column is fixedly connected to the cover.

2. The novel dust sampler according to claim 1 is characterized in that: The two linkage sliders are provided with a right-angled triangular inner groove on the side away from the sampling head, and two push rods are slidably installed on the cover. The two push rods are fixedly installed with the same movable ring on one end close to the dust sampler body, and the sampling head is located in the movable ring. The two push rods are fixedly installed with a connecting strip on the end away from the dust sampler body, and the two connecting strips are fixedly installed with a wedge-shaped pushing block on the side close to the cover, and the two wedge-shaped pushing blocks are respectively adapted to the two right-angled triangular inner grooves.

3. The novel dust sampler according to claim 2 is characterized in that: A second return spring is sleeved on each of the two push rods. One end of each of the two second return springs is fixedly connected to the cover, and the other end is fixedly connected to the movable collar.

4. The novel dust sampler according to claim 1 is characterized in that: A retaining groove is provided on the guide column, a half-thread screw is threadedly mounted on the folding plate, and the bottom end of the half-thread screw extends into the retaining groove.

5. The novel dust sampler according to claim 1 is characterized in that: The cover is provided with two shuttle openings, and the two positioning rods respectively pass through the two shuttle openings and contact the inner walls of the corresponding shuttle openings.

6. The novel dust sampler according to claim 1 is characterized in that: A third return spring is sleeved on the guide column, one end of the third return spring is fixedly connected to the cover, and the other end is fixedly connected to the folding plate.

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