Movable dust purifier for coal mine

Abstract

The present application relates to the technical field of dust purifier, particularly relates to a movable dust purifier for coal mine, comprising a safety helmet, a filtering assembly is arranged on the lower side of the safety helmet, and a dust removal assembly is arranged at the rear end of the safety helmet, the dust removal assembly and the filtering assembly are arranged, mobile air supply, active dust collection, breathing filtration and automatic cleaning back flushing and other function modules are integrated, the problems of mobile dust removal and personal respiratory protection are effectively solved, the dust removal assembly is directly installed on the side of the track mine car, the mine car is used for moving and power supply, the problem that large fixed equipment cannot move along with the operation surface is solved, the staff does not need to carry heavy dust removal equipment during use, light operation can enhance flexibility, the modular design allows multiple dust removal units to be installed on one mine car, clean air support can be provided for multiple operators at the same time, and the dust removal efficiency and application range are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of dust purifier technology, and in particular to a mobile dust purifier for coal mines. Background Technology

[0002] In underground coal mining operations, large amounts of high-concentration dust are generated during the production process. This dust not only severely pollutes the working environment, but is also the leading cause of occupational diseases such as pneumoconiosis among miners, posing a significant threat to the lives and health of workers.

[0003] Currently, underground mining relies primarily on high-powered, fixed ventilation and dust removal systems to reduce airborne dust concentrations. However, these systems cannot move with the advancing mining face, creating blind spots in dust collection. The ordinary dust masks typically worn by miners have limited filtration efficiency, and the filter material becomes clogged with use, increasing breathing resistance. Workers often unconsciously remove their masks due to feeling stuffy, rendering them ineffective. Therefore, existing technologies suffer from the following prominent problems:

[0004] 1. There is a lack of efficient local dust purification methods that can closely follow the movement of staff;

[0005] 2. There is an irreconcilable contradiction between the filtration efficiency and wearing comfort of personal protective equipment. It is impossible to ensure smooth breathing while guaranteeing efficient and continuous filtration, thus making it difficult to achieve truly effective long-term personal protection. To address this, we propose a portable dust purifier for coal mines. Summary of the Invention

[0006] In order to overcome the technical problems existing in the prior art, the present invention provides a mobile dust purifier for coal mines.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a safety helmet, wherein a filter component is provided on the lower side of the safety helmet and a dust removal component is provided at the rear end of the safety helmet;

[0008] The dust removal assembly includes a first mounting frame, a rotating drum is provided on the side of the first mounting frame, a reset device and a dust suction pipe are provided on the side of the rotating drum, and a dust collector is provided inside the rotating drum.

[0009] The filter assembly comprises a mask, the side of the mask is provided with a slot and a mounting cavity, the inner wall of the mounting cavity is provided with a filter core block in a clamping manner, the side of the filter core block is provided with a cleaning rod in a close manner, the side of the filter core block away from the second mounting frame is provided with a matching frame, the wall surface of the mounting cavity is provided with a discharge slot penetrating through the mask at a lower position, a storage box is clamped and installed on the lower side of the mask corresponding to the discharge slot, the inside of the mask is provided with a matching cavity, a connecting slot, a movable cavity, a first guide slot and a second guide slot, the inner wall of the connecting slot is fixedly provided with a connecting pipe, the inside of the movable cavity is provided with a first supporting cylinder, a piston block, an exhaust pipe, a support, a trigger rod and a second supporting cylinder, the exhaust pipe is clamped and installed in the inside of the movable cavity, the trigger rod is movably installed at the center position of the support, the second supporting cylinder is fixedly connected between the trigger rod and the side of the support, the side of the support is provided with an exhaust slot penetrating through the support at equal intervals, the inside of the second guide slot is fixedly provided with a one-way valve, and the inside of the first guide slot is threadedly provided with a compressed gas tank.

[0010] Further, one side of the rotating drum penetrates the first mounting frame through a circular shaft and is rotatably installed, the reset device is fixedly installed on the side of the first mounting frame and is fixedly connected to the side of the circular shaft of the rotating drum, the dust collector is fixedly installed on the hollow inside of the rotating drum and extends out of the remaining rotating installation through the first mounting frame, and the dust suction pipe is threadedly arranged on the side of the rotating drum.

[0011] Further, the mask is arranged at the lower side of the safety helmet, the side of the mask is fixedly provided with an elastic band, the lower side of the safety helmet is symmetrically fixedly provided with a fixed block corresponding to the position of the mask, the inside of the fixed block is provided with a damping rod, the other end of the damping rod extends to the side of the mask, the damping rod is rotatably installed on the side of the fixed block through a circular shaft, the other end of the damping rod is fixedly provided with a connecting block, and the connecting block is rotatably installed on the side of the mask through a circular shaft.

[0012] Further, the matching cavity is arranged staggered with the discharge slot, the wall surface of the matching cavity is circumferentially and equidistantly provided with connecting holes penetrating through the mask to the inside of the mounting cavity, the connecting slot is symmetrically arranged on the wall surface of the matching cavity away from the cleaning rod, the connecting pipe penetrates the safety helmet and is connected to the other end position of the dust suction pipe, and the connecting pipe is fixed on the upper side of the safety helmet in close contact with the clamping block.

[0013] Further, the inner wall of the mounting cavity is fixedly provided with a second mounting frame away from the filter core block, a rotating block is rotatably installed at the center position of the second mounting frame and movably arranged in the inside of the mounting cavity, the cleaning rod is arranged in the inside of the mounting cavity corresponding to the position of the rotating block and is in close contact with the wall surface of the mounting cavity, and a matching rod is fixedly connected between the cleaning rod and the rotating block.

[0014] Further, the active cavity is arranged on the side of the mask corresponding to the connecting groove position, the first guide groove is arranged on the wall surface of the active cavity, and the second guide groove is arranged on the wall surface of the first guide groove and penetrates the mask to the inside of the connecting groove, the matching frame is installed on the slotted wall surface through buckling, the side surface of the matching frame close to the filter block is equidistantly provided with an exhaust hole penetrating the matching frame to the hollow inside, and the other end of the exhaust pipe is fixedly connected to the inside of the matching frame.

[0015] Further, the bracket is fixedly installed on the wall surface of the active cavity, the trigger rod covers the exhaust groove on the side surface of the bracket, and the second supporting cylinder is movably sleeved on the side surface of the trigger rod.

[0016] Further, the compressed gas tank is attached to the side and wall surface of the mask and the first guide groove, the piston block is movably installed in the inside of the active cavity, and the first supporting cylinder is fixedly connected between the side surface of the piston block and the wall surface of the active cavity.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1、The present application sets up dust removal assembly and filter assembly, and integrates the functions of mobile air supply, active dust removal, breathing filtration and automatic cleaning back flushing, effectively solves the problems of mobile dust removal and personal breathing protection, directly installs the dust removal assembly on the side of the track mine car, uses the mine car for movement and power supply, solves the problem that large fixed equipment cannot move with the working surface, and the working personnel do not need to carry heavy dust removal equipment during use, can work with light equipment and enhance flexibility, the modular design allows multiple dust removal units to be installed on one mine car, can provide clean air support for multiple workers at the same time, and significantly improves the dust removal efficiency and application range.

[0019] 2、The present application sets up dust removal machine, dust suction pipe and mask and its peripheral parts, can realize double protection of breathing filtration and active dust removal, specifically, the filter assembly and the dust removal assembly constitute a dynamic circulation system through the dust suction pipe and the connecting pipe. On the one hand, when the worker breathes, the filter block performs the first filtration on the inhaled air; on the other hand, the dust removal machine continuously works, actively sucks away the dust trying to penetrate the mask or accumulated in the mask mounting cavity through the connecting pipe and the connecting hole arranged in the inside of the mask, and merges into the main dust suction pipeline for treatment, so that the worker's mouth and nose keep a micro environment with low dust concentration, the protection effect is much better than that of ordinary masks, and the air quality of the personal breathing area is improved.

[0020] 3、The second mounting frame, the rotating block and the cleaning rod and the peripheral components are set, so that the automatic filter cleaning and dust collection capacity are realized, specifically, the suction flow generated by the dust removal machine is used as a power source to drive an automatic cleaning mechanism built-in. The airflow blows the rotating block to rotate, and then drives the cleaning rod to continuously scrape the surface of the filter block through the cooperation rod, so as to prevent the filter block from being blocked. The dust cleaned is immediately sucked away, and the other part falls into the storage box at the bottom to be collected, so that the dust is collected and cleaned, the secondary flying is avoided, the filter block can maintain low respiratory resistance and high filtering efficiency in a long time, the problem that the filter material is blocked to cause discomfort of personnel wearing is solved, and the persistence and effectiveness of protection are ensured.

[0021] 4、The movable cavity, the first guide groove and the internal components are set, so that the intelligent passive back-blowing dust cleaning mechanism is realized, specifically, the residual pressure of the dust suction airflow is used to automatically accumulate pressure in the movable cavity. When the pressure reaches a certain threshold value, the mechanism is triggered to make the gas instantaneously blow back, so that the filter block is back-blowed with great force, deep cleaning is completed, and the reliability of the device operation is further ensured.

[0022] 5、The compressed gas tank is set, so that the intelligent active back-blowing dust cleaning mechanism is realized, specifically, when the personnel feel that the breathing is not smooth, the compressed gas tank can also be manually triggered to perform instant and strong active back-blowing, so that the filter core can be effectively maintained and cleaned under any working condition, and the safety and health of the personnel are ensured. DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of the dust removal mechanism of the present application;

[0025] Figure 3 It is a schematic diagram of the structure of the filter assembly of the present application;

[0026] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the present application;

[0027] Figure 5 It is another schematic diagram of the partial cross-sectional structure of the present application;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the mask of the present application;

[0029] Figure 7 It is a schematic diagram of the local structure of the filter block of the present application;

[0030] Figure 8 It is an enlarged structure schematic diagram of A of the present application; Figure 4 ​

[0031] Figure 9 The application is Figure 8 The schematic diagram of the amplification structure of B in the application is shown in the figure.

[0032] Figure 10 The schematic diagram of the partial cross-sectional structure of the matching frame in the application is shown in the figure.

[0033] 1, safety helmet; 2, dust removal assembly; 21, first mounting frame; 22, rotating drum; 23, reset device; 24, dust removal machine; 25, dust suction pipe; 3, filter assembly; 31, face mask; 311, elastic band; 312, slot; 313, mounting cavity; 32, fixed block; 321, damping rod; 322, connecting block; 33, filter core block; 34, second mounting frame; 341, rotating block; 342, matching rod; 343, cleaning rod; 344, discharge groove; 345, storage box; 35, matching cavity; 351, connecting hole; 352, connecting groove; 353, connecting pipe; 36, movable cavity; 361, first supporting cylinder; 362, piston block; 37, first guide groove; 371, second guide groove; 372, compressed gas tank; 373, one-way valve; 38, matching frame; 381, exhaust hole; 39, exhaust pipe; 391, support; 392, exhaust groove; 393, trigger rod; 394, second supporting cylinder. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the following further describes the application in combination with specific embodiments, but the following embodiments are only preferred embodiments of the application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application. In the following embodiments, the experimental methods are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0035] Embodiment: as Figure 1 shown, a movable dust purifier for coal mine includes a safety helmet 1, which is a protective helmet commonly used by coal mine workers, and can be equipped with a miner's lamp and other accessories. A filter assembly 3 capable of efficiently removing dust is arranged on the lower side of the safety helmet 1, and a dust removal assembly 2 capable of cooperating with the whole dust removal is arranged at the rear end of the safety helmet 1.

[0036] The dust removal assembly 2 arranged can be installed on the side of the track mine car, and the position is moved and locked through the track mine car, and then the operation dust removal operation can be performed with the worker, without manual carrying, and the modularization setting can add multiple dust removal assemblies 2 on the side of the mine car for use.

[0037] As Figure 1 shown,Figure 2 As shown, the dust removal assembly 2 comprises a first mounting frame 21 which is a "C" shaped frame and is mounted on the side of the track mine car through component clamping, a rotating drum 22 is arranged on the inner side of the first mounting frame 21 and is rotatably connected to the first mounting frame 21 through a circular shaft penetrating the first mounting frame 21, the other side of the rotating drum 22 is hollow, the rotating drum 22 is an I-shaped cylinder, a reset device 23 is fixedly arranged on the side of the first mounting frame 21 and is fixedly connected to the side of the circular shaft of the rotating drum 22, the reset device 23 is composed of a reset torsion spring which is sleeved on the circular shaft of the rotating drum 22, one end of the torsion spring is fixed to the circular shaft and the other end is fixed to the first mounting frame 21, so that the rotating drum 22 can automatically reset when not subjected to tension, a dust removal machine 24 is fixedly arranged in the hollow inner side of the rotating drum 22 and extends out of the first mounting frame 21 through the first mounting frame 21, the dust removal machine 24 is rotatably arranged, the dust removal machine 24 is an integrated dust removal device which can perform high-efficiency dust collection, a dust suction pipe 25 is threadedly arranged on the side of the rotating drum 22, one end of the dust suction pipe 25 penetrates the rotating drum 22 and extends to the air suction port of the dust removal machine 24.

[0038] The filter assembly 3 is arranged on the side of the safety helmet 1, when the worker wears the safety helmet 1 to work, the filter assembly 3 can be worn on the mouth and nose, the filter assembly 3 can continuously and efficiently perform filtering operation, can actively perform dust suction operation in cooperation with the dust removal assembly 2, and can actively perform back blowing operation, so as to ensure the dust removal effect when the worker works and ensure the safety of the worker;

[0039] As Figures 3 to 10As shown, the filter assembly 3 comprises a mask 31 arranged at the lower side of the safety helmet 1, and an elastic band 311 is fixedly arranged at the side of the mask 31. The elastic band 311 is a rectangular band made of elastic material, and the mask 31 can be elastically pulled to fit the mouth and nose of the worker through the elastic band 311. A slot 312 is arranged at the side of the mask 31, and the mask 31 can be more fitted to the mouth and nose of the worker through the elastic band 311. An installation cavity 313 penetrating through the mask 31 is arranged at the center of the wall surface of the elastic band 311, and the installation cavity 313 is a convex circular cavity. A fixed block 32 is symmetrically fixedly arranged at the lower side of the safety helmet 1 corresponding to the position of the mask 31, and the fixed block 32 is a "C" shaped block. A damping rod 321 is arranged at the inner side of the fixed block 32, and the other end of the damping rod 321 extends to the side of the mask 31. The damping rod 321 is rotatably arranged at the side of the fixed block 32 through a circular shaft, and the damping rod 321 is a free telescopic rod that can be locked and damped. A connecting block 322 is fixedly arranged at the other end of the damping rod 321, and the connecting block 322 is rotatably arranged at the side of the mask 31 through a circular shaft penetrating the connecting block 322. The connecting block 322 is a circular block. A filter core block 33 is clamped and arranged at the inner wall of the installation cavity 313, and the filter core block 33 is a circular block made of high filtering material. Specifically, since both ends of the damping rod 321 are rotatably arranged, the mask 31 can be rotatably arranged at the lower side of the safety helmet 1. The damping rod 321 can be automatically telescoped, so that the mask 31 can be constrained to fit the mouth and nose of the worker. The filter core block 33 can filter dust when the worker breathes.

[0040] The inner wall of the mounting cavity 313 is fixedly installed with a second mounting frame 34 away from the filter block 33, the second mounting frame 34 is a circular ring frame with fan-shaped grooves equidistantly arranged on the side surface, a rotating block 341 is rotatably installed at the center position of the second mounting frame 34 and movably arranged inside the mounting cavity 313, the rotating block 341 is a H-shaped cylindrical block with leaf blocks equidistantly arranged on the side surface, a cleaning rod 343 is arranged inside the mounting cavity 313 corresponding to the position of the rotating block 341 and abuts against the wall surface of the mounting cavity 313 and the filter block 33, the cleaning rod 343 is an L-shaped wear-resistant rod with wear-resistant bristles equidistantly arranged on the side surface, a matching rod 342 is fixedly connected between the cleaning rod 343 and the rotating block 341, the matching rod 342 is a circular rod, a discharge groove 344 is arranged on the lower wall surface of the mounting cavity 313 and penetrates the face shield 31, the discharge groove 344 is a trapezoidal cavity, a storage box 345 is detachably connected to the lower side of the face shield 31 corresponding to the position of the discharge groove 344, the storage box 345 is an arc-shaped box with a hollow upper side, a matching cavity 35 is arranged inside the face shield 31 corresponding to the position of the cleaning rod 343, the matching cavity 35 is a four-fifth circular ring cavity, the matching cavity 35 is arranged staggered with the discharge groove 344, a plurality of connecting holes 351 are equidistantly arranged on the wall surface of the matching cavity 35 and penetrate the face shield 31 to the inside of the mounting cavity 313, the connecting holes 351 are circular holes, a connecting groove 352 is symmetrically arranged on the wall surface of the matching cavity 35 away from the cleaning rod 343 and penetrates the face shield 31, the connecting groove 352 is a cylindrical groove, a connecting pipe 353 is fixedly installed on the inner wall of the connecting groove 352 and penetrates the safety helmet 1 to be connected to the other end of the dust collection pipe 25, the connecting pipe 353 is a three-way pipe with one inlet and two outlets, the connecting pipe 353 is fixedly connected to the upper side of the safety helmet 1 by abutting against the clamping block; Specifically, when the dust collector 24 is used for air suction and dust removal, the connecting pipe 353 can be operated by the dust collection pipe 25, at this time the face shield 31 is worn on the nose and mouth of the worker, when the worker inhales, the air is filtered by the filter block 33, part of the dust is sucked by the connecting pipe 353, the dust is collected in the connecting holes 351 and the matching cavity 35 and guided to the dust collector 24 through the connecting pipe 353 and the dust collection pipe 25, the dust collection pipe 25 can actively suck the dust, which can cooperate with the dust removal operation, reduce the dust content during suction, at the same time, the airflow during dust collection can rotate the rotating block 341, the rotating block 341 drives the cleaning rod 343 to scrape and clean the side surface of the filter block 33 and the wall surface of the mounting cavity 313 through the matching rod 342, part of the scraped dust is sucked by the connecting pipe 353, part of the dust is accumulated and falls into the discharge groove 344, then falls into the storage box 345 for collection, ensuring long-term use of the filter block 33.

[0041] The side of the mask 31 corresponds to the position of the connecting groove 352 to open the movable cavity 36, the movable cavity 36 is a convex cylindrical cavity, the wall surface of the movable cavity 36 is provided with a first guide groove 37 penetrating the mask 31, the first guide groove 37 is a cylindrical groove, the wall surface of the first guide groove 37 is obliquely provided with a second guide groove 371 and the second guide groove 371 penetrates the mask 31 to the inside of the connecting groove 352, the second guide groove 371 is a funnel-shaped cylindrical groove, a one-way valve 373 is fixedly arranged in the inside of the second guide groove 371, the one-way valve 373 adopts a one-way air valve type with filtering and self-cleaning function, a compressed gas tank 372 is screw-mounted in the inside of the first guide groove 37 and is attached to the side and wall surface of the mask 31 and the first guide groove 37, the compressed gas tank 372 is a compressed gas tank with a manual release valve, a piston block 362 is movably arranged in the inside of the movable cavity 36, the piston block 362 is a round block made of elastic rubber material, a first support cylinder 361 is fixedly connected between the side surface of the piston block 362 and the wall surface of the movable cavity 36, the first support cylinder 361 is a corrugated cylindrical made of elastic material, a matching frame 38 is arranged on the side surface of the filter core block 33 away from the second mounting frame 34 and is buckled and connected to the wall surface of the slot 312, the matching frame 38 is a circular grid frame with hollow inside, a plurality of exhaust holes 381 are equidistantly arranged on the side surface of the matching frame 38 close to the filter core block 33 and penetrate the matching frame 38 to the hollow inside, the exhaust holes 381 are circular holes, an exhaust pipe 39 is buckled and connected to the inside of the movable cavity 36 and the other end of the exhaust pipe 39 penetrates the matching frame 38 to be fixedly connected to the inside, the exhaust pipe 39 is a circular pipe, a support 391 is fixedly arranged on the wall surface of the movable cavity 36, the support 391 is a circular ring block, a plurality of exhaust grooves 392 are equidistantly arranged on the side surface of the support 391 and penetrate the support 391, the exhaust grooves 392 are fan-shaped grooves, a trigger rod 393 is movably arranged at the center position of the support 391 and covers the exhaust grooves 392 on the side surface of the support 391, the trigger rod 393 is an I-shaped circular rod, a second support cylinder 394 is fixedly connected between the side surface of the trigger rod 393 and the support 391 and movably sleeves the side surface of the trigger rod 393, the second support cylinder 394 is a corrugated cylindrical made of elastic material.Specifically, when the connecting pipe 353 is connected, the air flow can be guided into the first guide groove 37 through the second guide groove 371, and the accumulated air flow pressure gradually increases, so that the piston block 362 slides in the movable cavity 36 to extrude the first support cylinder 361 to deform. When the pressure in the movable cavity 36 is greater than the elastic force of the second support cylinder 394, the gas will flow through the exhaust groove 392 to extrude the trigger rod 393 to separate from the side of the bracket 391, and the released gas will flow into the exhaust pipe 39 and then flow out from the exhaust hole 381. The exhaust gas can blow and clean the filter block 33, further ensure the cleaning effect of the filter block 33, and ensure the filtering effect of the filter block 33. The dust blown back is attracted by the connecting pipe 353, and part of it falls into the storage box 345 to be collected. In this way, the breathing filtering and dust removal operation can be ensured under long-time operation. In addition, the compressed gas tank 372 can be manually released to push the trigger rod 393 to open the exhaust groove 392, and the compressed gas is discharged from the exhaust hole 381 in the matching frame 38 to actively blow and meet the real-time manual demand.

[0042] Working principle:

[0043] Before use: first, the first mounting frame 21 is connected and installed on the side of the track car, and the safety helmet 1 is worn on the head of the worker. After the adjusting mask 31 is pulled by the damping rod 321, the mask 31 is attached to the worker's mouth and nose by rotating the two ends of the damping rod 321, and the elastic stability of the elastic belt 311 is completed.

[0044] In use: first, carry and move to the designated position, and then lock the car and start the dust removal machine 24 to work. The worker moves to the designated working position, and the filter block 33 pulls the dust suction pipe 25 at this time. The dust suction pipe 25 drives the rotating drum 22 to automatically rotate to unwind. When the dust suction pipe 25 is not pulled, the reset device 23 can reset and wind the dust suction pipe 25.

[0045] Second step, normal dust removal operation, the staff normal work, mouth and nose breathing, that is, through the filter core block 33 dust filtering operation, at this time into the installation cavity 313 inside the dust, part of the connection pipe 353 suction through the connecting hole 351 to the matching cavity 35 inside, and then from the matching cavity 35 integrated into the suction pipe 353 inside, through the dust suction pipe 25 to the dust removal machine 24 suction dust removal, the air flow generated by the suction can drive the rotating block 341 automatically rotate, the rotating block 341 through the matching rod 342 drive cleaning rod 343 in the filter core block 33 side and installation cavity 313 wall rotation scraping, cleaning operation, the dust part of the connection pipe 353 suction collection, the other dust flows to the discharge chute 344 inside falling to the storage box 345 inside collection storage, so as to ensure that the staff breathing air does not contain dust, ensure the health of personnel;

[0046] Third step, passive trigger blowback, when the connection pipe 353 long time suction, the air flow through the second guide groove 371 guide and through the one-way valve 373 (after filtering) into the first guide groove 37, and in the activity cavity 36, the accumulated gas pressure becomes larger, push the piston block 362 extrusion first support cylinder 361 deformation, when the activity cavity 36 inside gas pressure is greater than the second support cylinder 394 elastic force, the gas can be through the exhaust groove 392 push the trigger rod 393 away from the bracket 391, after the exhaust groove 392 is open, the gas is released to the exhaust pipe 39 flow into the matching frame 38 inside, from the exhaust hole 381 discharge can be carried out on the filter core block 33 blowback dust removal, similarly, dust is collected by the connection pipe 353 suction and the storage box 345 accumulation collection; wherein the gas release, the piston block 362 is supported by the first support cylinder 361 reset, can accelerate the flow rate of gas flow into the exhaust pipe 39 inside, increase the strength of gas flow out of the exhaust hole 381;

[0047] Fourth step, active trigger blowback, when the staff feel the breathing effect is not good, at this time, the active release of compressed gas tank 372 inside the compressed gas, the compressed gas can be filled in the activity cavity 36, push the trigger rod 393 away from the bracket 391 side, the exhaust groove 392 is open, the compressed gas can be through the exhaust pipe 39 and the matching frame 38 from the exhaust hole 381 pressure discharge, complete the active blowback cleaning operation of the filter core block 33.

[0048] The embodiments of the application are described in detail above in conjunction with the drawings, but the application is not limited thereto, within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the application.

Claims

1. A mobile dust purifier for coal mines, comprising a safety helmet (1), a filter assembly (3) provided on the lower side of the safety helmet (1), and a dust removal assembly (2) provided at the rear end of the safety helmet (1). Its features are: The dust removal assembly (2) includes a first mounting frame (21), a rotating drum (22) is provided on the side of the first mounting frame (21), a reset device (23) and a suction pipe (25) are provided on the side of the rotating drum (22), and a dust collector (24) is provided inside the rotating drum (22). The filter assembly (3) includes a mask (31). The mask (31) has a slot (312) and a mounting cavity (313) on its side. A filter element block (33) is snapped onto the inner wall of the mounting cavity (313). A cleaning rod (343) is attached to the side of the filter element block (33). A mating frame (38) is provided on the side of the filter element block (33) away from the second mounting frame (34). A discharge groove (344) penetrating the mask (31) is opened at the lower position of the wall of the mounting cavity (313). A storage box (345) is snapped onto the lower side of the mask (31) corresponding to the position of the discharge groove (344). The inside of the mask (31) has a mating cavity (35), a connecting groove (352), a movable cavity (36), a first guide groove (37), and a second guide groove (371). A connecting pipe is fixedly installed on the inner wall of the connecting groove (352). (353), the connecting pipe (353) passes through the safety helmet (1) and connects to the other end of the vacuum pipe (25). The interior of the movable cavity (36) is provided with a first support cylinder (361), a piston block (362), an exhaust pipe (39), a bracket (391), a trigger rod (393) and a second support cylinder (394). The exhaust pipe (39) is snapped into the interior of the movable cavity (36). The trigger rod (393) is movably installed in the center of the bracket (391). The second support cylinder (394) is fixedly connected between the trigger rod (393) and the side of the bracket (391). The side of the bracket (391) is provided with exhaust grooves (392) that pass through it at equal intervals. A one-way valve (373) is fixedly installed inside the second guide groove (371). A compressed air tank (372) is installed inside the first guide groove (37).

2. The portable dust purifier for coal mines according to claim 1, characterized in that: The rotating drum (22) is rotatably mounted on one side through the first mounting frame (21) via a round shaft. The reset device (23) is fixedly mounted on the side of the first mounting frame (21) and fixedly connected to the side of the round shaft of the rotating drum (22). The dust collector (24) is fixedly mounted on the hollow inner side of the rotating drum (22) and extends out through the first mounting frame (21) and is rotatably mounted. The suction pipe (25) is threaded on the side of the rotating drum (22).

3. A portable dust purifier for coal mines according to claim 2, characterized in that: The face shield (31) is located on the lower side of the safety helmet (1). An elastic band (311) is fixedly installed on the side of the face shield (31). A fixing block (32) is symmetrically fixedly installed on the lower side of the safety helmet (1) corresponding to the face shield (31). A damping rod (321) is provided on the inner side of the fixing block (32), and the other end of the damping rod (321) extends to the side of the face shield (31). The damping rod (321) is rotatably installed on the side of the fixing block (32) through a round shaft. A connecting block (322) is fixedly installed on the other end of the damping rod (321), and the connecting block (322) is rotatably installed on the side of the face shield (31) through a round shaft.

4. A portable dust purifier for coal mines according to claim 3, characterized in that: The mating cavity (35) is staggered with the discharge trough (344). The wall of the mating cavity (35) is provided with connecting holes (351) that penetrate the mask (31) to the inside of the mounting cavity (313) in a circular array at equal intervals. The connecting grooves (352) are symmetrically opened on the wall of the mating cavity (35) away from the cleaning rod (343). The connecting tube (353) is attached to the clamping block and fixed on the upper side of the safety helmet (1).

5. A portable dust purifier for coal mines according to claim 4, characterized in that: A second mounting bracket (34) is fixedly installed on the inner wall of the mounting cavity (313) away from the filter block (33). A rotating block (341) is rotatably installed at the center of the second mounting bracket (34) and the rotating block (341) is movably disposed inside the mounting cavity (313). A cleaning rod (343) is disposed inside the mounting cavity (313) corresponding to the rotating block (341) and the cleaning rod (343) is attached to the wall of the mounting cavity (313). A mating rod (342) is fixedly connected between the cleaning rod (343) and the rotating block (341).

6. A portable dust purifier for coal mines according to claim 5, characterized in that: The active cavity (36) is opened on the side of the mask (31) corresponding to the connecting groove (352). The first guide groove (37) is opened on the wall of the active cavity (36). The second guide groove (371) is opened obliquely on the wall of the first guide groove (37) and the second guide groove (371) penetrates the mask (31) to the inside of the connecting groove (352). The mounting bracket (38) is installed on the wall of the slot (312) by snap-fit. The mounting bracket (38) has exhaust holes (381) equidistantly opened on the side of the mounting bracket (38) near the filter block (33) and the exhaust holes (381) penetrate the mounting bracket (38) to its hollow interior. The other end of the exhaust pipe (39) penetrates the mounting bracket (38) to its interior and is fixedly connected.

7. A portable dust purifier for coal mines according to claim 6, characterized in that: The bracket (391) is fixedly installed on the wall of the movable cavity (36), the trigger rod (393) is attached to the side of the bracket (391) and covers the exhaust groove (392), and the second support cylinder (394) is movably sleeved on the side of the trigger rod (393).

8. A portable dust purifier for coal mines according to claim 7, characterized in that: The compressed air tank (372) is attached to the side and wall of the mask (31) and the first guide groove (37), the piston block (362) is movably installed inside the movable cavity (36), and the first support cylinder (361) is fixedly connected between the side of the piston block (362) and the wall of the movable cavity (36).

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