An explosion-proof mining dust sampler

Abstract

The present invention relates to the technical field of samplers, and specifically discloses an explosion-proof dust sampler for mining, comprising: a sampler body, the sampler body comprising an air inlet pipe and an air outlet pipe; an air inlet pipe, the air inlet pipe is located at one side of the sampler body, and a filter is arranged inside the air inlet pipe; a replacement mechanism, the replacement mechanism is located inside the air inlet pipe; a scraping mechanism, the scraping mechanism is located inside the air inlet pipe. When the present invention is in use, when the filter needs to be replaced after filtering dust, the filter inside the air inlet pipe is replaced by the replacement mechanism, and at the same time, the scraping mechanism located inside the air inlet pipe scrapes off the dust and particles remaining and attached to the inner wall of the air inlet pipe, and the replaced filter brings the scraped dust out of the air inlet pipe. When replacing the filter, there is no need to open the sampler body, so as to avoid damage to the internal components of the sampler body caused by dust and particles in the air, and the dust cleaning inside the air inlet pipe can ensure the accuracy of the sampling result of the sampler body.

Description

Technical Field

[0001] The invention relates to the technical field of samplers, in particular to an explosion-proof dust sampler for mining. Background Art

[0002] A mining dust sampler is a device specially designed for collecting dust particles in a mining environment. The dust sampler uses an air pump to suck dust particles in the mining environment into the sampler. After being filtered by the filter material inside the sampler, the dust particles are separated and stored in the sampler.

[0003] The filters of existing mining dust samplers are mostly built-in. When replacing the filter, the dust sampler needs to be opened, the filter is replaced and then the sampler is closed. This is not only time-consuming and laborious to replace, but also the mineral dust and particles in the air will enter the sampler, causing deviations in the sampling results and even damaging the internal components of the sampler, posing a safety hazard. For this reason, we propose an explosion-proof mining dust sampler. Summary of the invention

[0004] The purpose of the present invention is to provide an explosion-proof mining dust sampler to solve the problems raised in the above-mentioned background technology that replacement is time-consuming and labor-intensive, and that mineral dust and particles in the air will enter the sampler, causing deviations in the sampling results and even damaging the internal components of the sampler, posing a safety hazard.

[0005] To achieve the above object, the present invention provides the following technical solutions: an explosion-proof mining dust sampler, comprising a sampler body, the sampler body comprising an air inlet pipe and an air outlet pipe;

[0006] An air inlet pipe, which is located on one side of the sampler body and has a filter disposed inside;

[0007] A replacement mechanism, the replacement mechanism is located inside the air intake pipe, and the replacement mechanism can replace the filter inside the air intake pipe;

[0008] The scraping mechanism is located inside the air intake pipe and can scrape the inner wall of the air intake pipe when the filter is replaced.

[0009] Among them, a baffle rod is fixedly connected to the inner wall of the air inlet pipe, and a taking-out groove is arranged on the outer wall of the air inlet pipe. The taking-out groove is located at one end of the baffle rod away from the sampler body, and the taking-out groove is arc-shaped.

[0010] Among them, the replacement mechanism includes a storage box fixedly connected to the outer wall of the sampler body, the storage box is located above the air inlet pipe, a spring is fixedly connected to the bottom of the storage box, a baffle is fixedly connected to the end of the spring away from the sampler body, the baffle is located inside the storage box and is slidably connected to the storage box, a plurality of filters are carried inside the storage box, a replacement slot is provided at the bottom of the storage box, the replacement slot is located above the removal slot, and a replacement part is provided above the storage box for replacing the filter located inside the air inlet pipe.

[0011] Wherein, a dust blocking brush is fixedly connected to the inner wall of the replacement groove, and the dust blocking brush is used to block dust and particles.

[0012] Among them, the replacement part includes a sliding groove opened on the upper end of the storage box, the sliding groove corresponds to the position of the replacement groove, two sliding rails are fixedly connected to the upper end of the storage box, the two sliding rails are located on both sides of the sliding groove, a sliding block is slidably connected between the sliding rails, and fixed blocks are fixedly connected at both ends of the sliding block. The fixed blocks are located inside the sliding rails and slidably connected to the sliding rails, and a pull ring is fixedly connected to the end of the sliding block away from the storage box.

[0013] Among them, the scraping mechanism includes a fixed ring fixedly connected to the outer wall of the air inlet pipe. The fixed ring is located at one end of the removal groove close to the sampler body. The fixed ring is inclined. The end of the fixed ring close to the removal groove is slightly smaller than the other end. A snap-in groove is provided on the surface of the fixed ring. The snap-in groove is L-shaped. A scraping member capable of scraping the inner wall of the air inlet pipe is provided inside the air inlet pipe.

[0014] Among them, the scraper includes an annular plate fixedly connected to the inner wall of the air inlet pipe, a rotating ring is provided at one end of the annular plate close to the removal groove, the rotating ring is located inside the annular plate and is rotatably connected to the annular plate, a spring 2 is fixedly connected to one end of the rotating ring close to the removal groove, a scraper is fixedly connected to one end of the spring 2 away from the rotating ring, the scraper abuts against the inner wall of the air inlet pipe, and a rope is fixedly connected to one end of the scraper away from the spring 2.

[0015] Among them, a retaining ring is slidably connected to the outer periphery of the intake pipe, a clamping block is fixedly connected to the inner wall of the retaining ring, the clamping block is located inside the clamping groove and slidably connected to the clamping groove, a sealing gasket is fixedly connected to the inner wall of the retaining ring, and the inner wall of the retaining ring is fixedly connected to the rope.

[0016] Among them, the replacement mechanism includes a storage cylinder fixedly connected to the outer wall of the sampler body, a spring three is fixedly connected to the inner wall of the storage cylinder, a sliding plate is fixedly connected to the end of the spring three away from the sampler body, a filter is carried inside the storage cylinder, a through groove is provided at the bottom of the storage cylinder, a dust-blocking brush is fixedly connected to the inner wall of the through groove, and a switching component for replacing the filter inside the intake pipe is provided on one side of the storage cylinder.

[0017] Among them, the switching part includes a fixed rod fixedly connected to the outer wall of the sampler body, the fixed rod is located on one side of the storage tube, the outer periphery of the fixed rod is rotatably connected to a switching ring, the outer wall of the switching ring is fixedly connected to multiple switching rods, the outer wall of the switching rod is fixedly connected to a brush, and the brushes are located on both sides of the switching rod.

[0018] The present invention has at least the following beneficial effects:

[0019] When the present invention is in use, when the filter needs to be replaced after filtering dust, the filter inside the air intake pipe is replaced through the replacement mechanism, and at the same time the scraping mechanism located inside the air intake pipe scrapes off the dust and particles remaining and attached to the inner wall of the air intake pipe, and the replaced filter brings the scraped dust out of the air intake pipe. There is no need to open the sampler body when replacing the filter, which prevents dust and particles in the air from damaging the internal components of the sampler body. Cleaning the dust inside the air intake pipe can ensure the accuracy of the sampling result of the sampler body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the sampler of the present invention;

[0021] Figure 2 This is a schematic diagram of the front structure of the sampler of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the replacement mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the storage box of the present invention;

[0024] Figure 5 This is a schematic diagram of the sliding groove structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the fixing ring of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the retaining ring of the present invention;

[0027] Figure 8 It is a schematic diagram of the side structure of the retaining ring of the present invention;

[0028] Fig. 9 This is a schematic diagram of the cross-sectional structure of the air intake pipe of the present invention;

[0029] Fig.10 This is a schematic diagram of the cross-sectional structure of the annular plate of the present invention;

[0030] Fig.11 This is a schematic diagram of Embodiment 2;

[0031] Fig.12 It is a schematic diagram of the back side of the second embodiment.

[0032] In the figure: 1. sampler body; 11. air inlet pipe; 12. air outlet pipe; 2. filter; 21. baffle; 22. removal slot; 3. replacement mechanism; 31. storage box; 32. spring one; 33. baffle; 34. replacement slot; 35. dust brush; 4. scraping mechanism; 41. fixed ring; 42. snap-in slot; 5. replacement part; 51. sliding slot; 52. slide rail; 53. sliding block; 54. fixed block; 55. pull ring; 6. scraper; 61. annular plate; 62. rotating ring; 63. spring two; 64. scraper; 65. rope; 66. baffle; 67. snap-in block; 68. sealing gasket; 7. storage tube; 71. spring three; 72. sliding plate; 73. through slot; 8. switching part; 81. fixed rod; 82. switching ring; 83. switching rod; 84. brush. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See also Figure 1-10 , the present invention provides a technical solution: an explosion-proof mining dust sampler, comprising a sampler body 1, the sampler body 1 comprising an air inlet pipe 11 and an air outlet pipe 12;

[0036] An air inlet pipe 11, which is located at one side of the sampler body 1, and a filter 2 is arranged inside the air inlet pipe 11;

[0037] A replacement mechanism 3, the replacement mechanism 3 is located inside the air intake pipe 11, and the replacement mechanism 3 can replace the filter 2 inside the air intake pipe 11;

[0038] The scraping mechanism 4 is located inside the air intake pipe 11 and can scrape the inner wall of the air intake pipe 11 when the filter 2 is replaced;

[0039] When the present invention is in use, when the filter 2 needs to be replaced after filtering the dust, the filter 2 inside the air intake pipe 11 is replaced by the replacement mechanism 3, and at the same time, the scraping mechanism 4 located inside the air intake pipe 11 scrapes off the dust and particles remaining and attached to the inner wall of the air intake pipe 11, and the replaced filter 2 brings the scraped dust out of the air intake pipe 11. When replacing the filter 2, there is no need to open the sampler body 1, so as to avoid damage to the internal components of the sampler body 1 caused by dust and particles in the air. Cleaning the dust inside the air intake pipe 11 can ensure the accuracy of the sampling results of the sampler body 1.

[0040] The scraping mechanism 4 includes a fixed ring 41 fixedly connected to the outer wall of the air inlet pipe 11, the fixed ring 41 is located at one end of the removal groove 22 close to the sampler body 1, the fixed ring 41 is oblique, the end of the fixed ring 41 close to the removal groove 22 is slightly smaller than the other end, and a clamping groove 42 is provided on the surface of the fixed ring 41, and the clamping groove 42 is L-shaped. A scraping member 6 capable of scraping the inner wall of the air inlet pipe 11 is provided inside the air inlet pipe 11;

[0041] The scraper 6 includes an annular plate 61 fixedly connected to the inner wall of the air inlet pipe 11, a rotating ring 62 is provided at one end of the annular plate 61 close to the extraction groove 22, the rotating ring 62 is located inside the annular plate 61 and is rotatably connected to the annular plate 61, a spring 2 63 is fixedly connected to one end of the rotating ring 62 close to the extraction groove 22, a scraper 64 is fixedly connected to one end of the spring 2 63 away from the rotating ring 62, the scraper 64 abuts against the inner wall of the air inlet pipe 11, and a rope 65 is fixedly connected to one end of the scraper 64 away from the spring 2 63;

[0042] A retaining ring 66 is slidably connected to the periphery of the air intake pipe 11, and a clamping block 67 is fixedly connected to the inner wall of the retaining ring 66. The clamping block 67 is located inside the clamping groove 42 and is slidably connected to the clamping groove 42. A sealing gasket 68 is fixedly connected to the inner wall of the retaining ring 66, and the inner wall of the retaining ring 66 is fixedly connected to the rope 65.

[0043] When the filter 2 needs to be replaced, the retaining ring 66 is first rotated to make the retaining ring 66 rotate around the air inlet pipe 11, and the clamping block 67 located on the inner wall of the retaining ring 66 slides inside the clamping groove 42. When the clamping block 67 is disengaged from the clamping groove 42, the retaining ring 66 is slid to make the retaining ring 66 slide around the outer periphery of the air inlet pipe 11. At this time, the removal groove 22 opened in the air inlet pipe 11 is exposed, and the retaining ring 66 pulls the scraper 64 to slide inside the air inlet pipe 11 through the rope 65 when sliding. When the scraper 64 slides, the dust on the inner wall of the air inlet pipe 11 is scraped off. At the same time, the scraper 64 pulls the spring 2 63, and the spring 2 63 is stretched. The rotating ring 62 located at the end of the spring 2 63 away from the scraper 64 is located inside the annular plate 61. When the retaining ring 66 rotates, the rotating ring 62 is located inside the annular plate 61 and rotates, so as to prevent the spring 2 63 from twisting due to the deflection of the angle between the scraper 64 and the rotating ring 62.

[0044] After replacing the filter 2, reset the retaining ring 66. At this time, the spring 2 63 can pull the scraper 64 to reset when it is reset. The scraper 64 and the spring 2 63 slide to the inside of the annular plate 61 to prevent the scraper 64 and the spring 2 63 from being eroded by dust when the sampler body 1 is working. After the retaining ring 66 is reset, the clamping block 67 is located inside the clamping groove 42. Rotating the retaining ring 66 can re-clamp the clamping block 67 with the clamping groove 42. At the same time, the sealing gasket 68 located on the inner side of the retaining ring 66 can seal the removal groove 22 opened in the air inlet pipe 11, so that the sampler body 1 can collect mine dust more accurately.

[0045] A blocking rod 21 is fixedly connected to the inner wall of the air inlet pipe 11 , and a taking-out groove 22 is provided on the outer wall of the air inlet pipe 11 . The taking-out groove 22 is located at one end of the blocking rod 21 away from the sampler body 1 , and the taking-out groove 22 is arc-shaped.

[0046] The replacement mechanism 3 includes a storage box 31 fixedly connected to the outer wall of the sampler body 1, the storage box 31 is located above the air inlet pipe 11, a spring 32 is fixedly connected to the bottom of the storage box 31, a baffle 33 is fixedly connected to the end of the spring 32 away from the sampler body 1, the baffle 33 is located inside the storage box 31 and is slidably connected to the storage box 31, a plurality of filters 2 are carried inside the storage box 31, a replacement groove 34 is provided at the bottom of the storage box 31, the replacement groove 34 is located above the removal groove 22, and a replacement part 5 is provided above the storage box 31 for replacing the filter 2 located inside the air inlet pipe 11.

[0047] A dust blocking brush 35 is fixedly connected to the inner wall of the replacement slot 34 , and the dust blocking brush 35 is used to block dust and particles.

[0048] The replacement part 5 includes a sliding groove 51 opened at the upper end of the storage box 31, the sliding groove 51 corresponds to the position of the replacement groove 34, two slide rails 52 are fixedly connected to the upper end of the storage box 31, the two slide rails 52 are located on both sides of the sliding groove 51, a sliding block 53 is slidably connected between the slide rails 52, and fixed blocks 54 are fixedly connected at both ends of the sliding block 53, the fixed block 54 is located inside the slide rail 52 and is slidably connected to the slide rail 52, and a pull ring 55 is fixedly connected to the end of the sliding block 53 away from the storage box 31;

[0049] When replacing the filter 2, first rotate and push the retaining ring 66 to expose the removal slot 22 opened in the air intake pipe 11, press the pull ring 55, and the pull ring 55 drives the sliding block 53 to slide between the slide rails 52. The fixed blocks 54 at both ends of the sliding block 53 can ensure the vertical movement of the sliding block 53. The sliding block 53 slides in the sliding slot 51 opened in the storage box 31. When the sliding block 53 slides into the storage box 31, the sliding block 53 pushes the new filter 2 to slide downward. At this time, the filter 2 pushes open the dust blocking brush 35 fixedly connected to the inner wall of the replacement slot 34, and the storage box is removed. The filter 2 inside the air intake pipe 11 is pushed into the air intake pipe 11, and at the same time, the filter 2 inside the air intake pipe 11 is squeezed and slides out of the removal groove 22, and the dust scraped by the scraper 64 gathers on the surface of the filter 2 inside the air intake pipe 11 and follows the filter 2 to leave the air intake pipe 11. At this time, the air intake pipe 11 is filled with unused filters 2, and the used filters 2 are discharged from the air intake pipe 11. The baffle ring 66 is closed to reseal the air intake pipe 11, so that the filter 2 of the air intake pipe 11 can be replaced, and the internal components of the sampler body 1 can be prevented from being damaged by dust and particles, thereby improving the accuracy of the sampling results;

[0050] After the replacement is completed, pull the pull ring 55 to retract the sliding block 53, and the sliding block 53 slides to the top of the storage box 31. Since the filter 2 inside the storage box 31 is pushed out, the sliding block 53 slides out, and the spring 1 32 drives the baffle 33 to push the remaining filter 2 in the storage box 31, and slide the filter 2 at the end to the top of the replacement slot 34, so that the filter 2 can be filled, which is convenient for the next replacement of the filter 2.

[0051] Embodiment 2

[0052] See also Figure 11-12 The replacement mechanism 3 includes a storage cylinder 7 fixedly connected to the outer wall of the sampler body 1, a spring 3 71 fixedly connected to the inner wall of the storage cylinder 7, a sliding plate 72 fixedly connected to the end of the spring 3 71 away from the sampler body 1, a filter 2 is carried inside the storage cylinder 7, a through groove 73 is provided at the bottom of the storage cylinder 7, a dust-blocking brush 35 is fixedly connected to the inner wall of the through groove 73, and a switching member 8 capable of replacing the filter 2 inside the intake pipe 11 is provided on one side of the storage cylinder 7;

[0053] The switching member 8 includes a fixed rod 81 fixedly connected to the outer wall of the sampler body 1, the fixed rod 81 is located on one side of the storage tube 7, the outer periphery of the fixed rod 81 is rotatably connected to a switching ring 82, the outer wall of the switching ring 82 is fixedly connected to a plurality of switching rods 83, the outer wall of the switching rod 83 is fixedly connected to a brush 84, and the brush 84 is located on both sides of the switching rod 83;

[0054] When replacing the filter 2, the switching rod 83 is toggled, and the switching rod 83 drives the switching ring 82 to rotate around the fixed rod 81. The switching rod 83 located above the storage tube 7 rotates to the inside of the storage tube 7, and drives the filter 2 inside the storage tube 7 to slide out from the through groove 73, and slide into the intake pipe 11 through the removal groove 22 opened in the intake pipe 11. At the same time, when the switching rod 83 located above the intake pipe 11 rotates, the filter 2 inside the intake pipe 11 can be brought out from the removal groove 22. After the filter 2 brings out the dust inside the intake pipe 11, the brushes 84 on both sides of the switching rod 83 located at the upper end of the used filter 2 scrape off the dust accumulated inside the intake pipe 11, keep the inside of the intake pipe 11 clean, and make the collection result of the sampler main body 1 more accurate. The spring three 71 and the sliding plate 72 located inside the storage tube 7 are the same as the filling distance of the filter 2 in Example 1, and will not be repeated.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof mining dust sampler, comprising: A sampler body (1), the sampler body (1) comprising an air inlet pipe (11) and an air outlet pipe (12); It is characterized by: also including: An air intake pipe (11), the air intake pipe (11) being located on one side of the sampler body (1), and a filter (2) being arranged inside the air intake pipe (11); A replacement mechanism (3), the replacement mechanism (3) being located inside the air intake pipe (11), and the replacement mechanism (3) being capable of replacing the filter (2) inside the air intake pipe (11); A scraping mechanism (4), the scraping mechanism (4) being located inside the air intake pipe (11), and the scraping mechanism (4) being capable of scraping the inner wall of the air intake pipe (11) when the filter (2) is replaced; The replacement mechanism (3) comprises a storage box (31) fixedly connected to the outer wall of the sampler body (1), the storage box (31) being located above the air inlet pipe (11), a spring (32) being fixedly connected to the bottom of the storage box (31), a baffle (33) being fixedly connected to one end of the spring (32) away from the sampler body (1), the baffle (33) being located inside the storage box (31) and slidably connected to the storage box (31), a plurality of filters (2) being carried inside the storage box (31), a replacement slot (34) being provided at the bottom of the storage box (31), the replacement slot (34) being located above the removal slot (22), and a replacement part (5) capable of replacing the filter (2) located inside the air inlet pipe (11) being provided above the storage box (31); A dust blocking brush (35) is fixedly connected to the inner wall of the replacement groove (34), and the dust blocking brush (35) is used to block dust and particles.

2. The explosion-proof mining dust sampler according to claim 1 is characterized in that: The inner wall of the air inlet pipe (11) is fixedly connected to a blocking rod (21), and the outer wall of the air inlet pipe (11) is provided with a removal groove (22). The removal groove (22) is located at an end of the blocking rod (21) away from the sampler body (1), and the removal groove (22) is arc-shaped.

3. The explosion-proof mining dust sampler according to claim 1 is characterized in that: The replacement part (5) comprises a sliding groove (51) opened at the upper end of the storage box (31), the sliding groove (51) corresponds to the position of the replacement groove (34), the upper end of the storage box (31) is fixedly connected to two sliding rails (52), the two sliding rails (52) are located on both sides of the sliding groove (51), a sliding block (53) is slidably connected between the sliding rails (52), both ends of the sliding block (53) are fixedly connected to fixed blocks (54), the fixed blocks (54) are located inside the sliding rails (52) and are slidably connected to the sliding rails (52), and a pull ring (55) is fixedly connected to one end of the sliding block (53) away from the storage box (31).

4. The explosion-proof mining dust sampler according to claim 2 is characterized in that: The scraping mechanism (4) comprises a fixing ring (41) fixedly connected to the outer wall of the air inlet pipe (11), the fixing ring (41) being located at one end of the extraction groove (22) close to the sampler body (1), the fixing ring (41) being inclined, the end of the fixing ring (41) close to the extraction groove (22) being slightly smaller than the other end, a snap-fitting groove (42) being provided on the surface of the fixing ring (41), the snap-fitting groove (42) being L-shaped, and a scraping member (6) capable of scraping the inner wall of the air inlet pipe (11) being provided inside the air inlet pipe (11).

5. The explosion-proof mining dust sampler according to claim 4 is characterized in that: The scraper (6) comprises an annular plate (61) fixedly connected to the inner wall of the air inlet pipe (11); a rotating ring (62) is provided at one end of the annular plate (61) close to the extraction groove (22); the rotating ring (62) is located inside the annular plate (61) and is rotationally connected to the annular plate (61); a second spring (63) is fixedly connected to one end of the rotating ring (62) close to the extraction groove (22); a scraper (64) is fixedly connected to one end of the second spring (63) away from the rotating ring (62); the scraper (64) abuts against the inner wall of the air inlet pipe (11); and a rope (65) is fixedly connected to one end of the scraper (64) away from the second spring (63).

6. The explosion-proof mining dust sampler according to claim 5 is characterized in that: A retaining ring (66) is slidably connected to the periphery of the air inlet pipe (11); a clamping block (67) is fixedly connected to the inner wall of the retaining ring (66); the clamping block (67) is located inside the clamping groove (42) and is slidably connected to the clamping groove (42); a sealing gasket (68) is fixedly connected to the inner wall of the retaining ring (66); and the inner wall of the retaining ring (66) is fixedly connected to the rope (65).

7. The explosion-proof mining dust sampler according to claim 1 is characterized in that: The replacement mechanism (3) comprises a storage cylinder (7) fixedly connected to the outer wall of the sampler body (1), a spring three (71) fixedly connected to the inner wall of the storage cylinder (7), a sliding plate (72) fixedly connected to one end of the spring three (71) away from the sampler body (1), a filter (2) being carried inside the storage cylinder (7), a through groove (73) being provided at the bottom of the storage cylinder (7), a dust-blocking brush (35) being fixedly connected to the inner wall of the through groove (73), and a switching member (8) capable of replacing the filter (2) inside the intake pipe (11) being provided on one side of the storage cylinder (7).

8. The explosion-proof mining dust sampler according to claim 7 is characterized in that: The switching member (8) comprises a fixed rod (81) fixedly connected to the outer wall of the sampler body (1), the fixed rod (81) being located on one side of the storage tube (7), the outer periphery of the fixed rod (81) being rotatably connected to a switching ring (82), the outer wall of the switching ring (82) being fixedly connected to a plurality of switching rods (83), the outer wall of the switching rod (83) being fixedly connected to a brush (84), and the brush (84) being located on both sides of the switching rod (83).

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