Filtering device for dust

Abstract

The utility model discloses a dust filtering device which comprises a connector, the right end of the connector is communicated with a fixed cover, and when an air tank connected to a breathing mask is replaced by the device due to insufficient air pressure in the air tank in the fire rescue process, the fixed cover is fixed through a water absorption sponge, a reciprocating screw rod, a sliding block, an extrusion plate, a limiting block and a humidity sensor. In the process that breathing traction gas is subjected to dust filtering through the filter element, external dust mixed with water vapor is firstly subjected to water absorption and dehumidification through the water absorption sponge, at the moment, the sucked gas is firstly subjected to dehumidification through the water absorption sponge, and then when the humidity sensor detects that the humidity of the dehumidified gas is large, the motor is started to drive the reciprocating lead screw to rotate; furthermore, under the limiting of a limiting block, a sliding block is controlled to drive an extrusion plate to reciprocate to extrude out water adsorbed in the water absorption sponge, the water absorption effect of the water absorption sponge and the dust filtering effect of the filter element are guaranteed, and the situation that the firefighter inhales gas with large water vapor for a long time, and consequently the respiratory mucosa is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filtering device for dust. Background Art

[0002] During the process of fire fighting and rescue by firefighters, when encountering the situation of insufficient air pressure in the gas cylinder, it is necessary to replace the gas cylinder connected to the breathing mask with a filter to urgently filter the dust in the air. The existing filters generally only have a simple function of adsorbing and filtering dust. During the process of extinguishing a fire at the scene, due to the relatively high humidity of the air in the fire field, when water vapor mixes with dust and enters the filter, it is easy to reduce the purification effect of the filtering substance in the filter on the dust. Moreover, when firefighters inhale gas with a large amount of water vapor for a long time, it will also cause damage to the respiratory mucosa. Therefore, a filtering device for dust is proposed to solve the above problems. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A filtering device for dust, including a joint. The right end of the joint is communicated with a fixed cover. The right end of the fixed cover is communicated with a fixed pipe. The bottom end of the fixed pipe is communicated with a fixed box. The front end of the fixed box is fixedly connected with a motor. The end of the main shaft of the motor is fixedly connected with a reciprocating screw rod rotatably connected to the fixed box. The outer side of the reciprocating screw rod is slidably connected with a slider slidably connected to the fixed box. The inner side of the slider is fixedly connected with a limiting block slidably connected to the reciprocating screw rod. The left end of the slider is fixedly connected with a pressing plate slidably connected to the fixed box. The outer side of the pressing plate is fixedly connected with a water-absorbing sponge, and the other end of the water-absorbing sponge is fixedly connected with the fixed box. The inner side of the fixed cover is fixedly connected with a fixed shaft. The outer side of the fixed shaft is rotatably connected with a turntable. The inner side of the turntable is fixedly connected with a fixed sleeve slidably connected to the fixed cover. The inner side of the fixed sleeve is slidably connected with a filter element. The bottom end is fixedly connected with a storage battery and a controller arranged horizontally.

[0006] As a further improvement of the utility model, a humidity sensor is arranged at the top end inside the fixed pipe, and the humidity sensor is fixedly connected with the fixed pipe.

[0007] As a further improvement of the utility model, a toothed ring is fixedly connected to the outer side of the turntable. The outer side of the toothed ring is meshed with a gear penetrating the fixed cover, and the gear is rotatably connected to the fixed cover through a rotating shaft.

[0008] As a further improvement of the utility model, a spring is provided on the fixed shaft. The end of the spring is fixedly connected with a positioning block, and the positioning block is slidably connected with the fixed shaft. One end of the positioning block is hemispherical, and the hemispherical end of the positioning block is engaged with the turntable.

[0009] As a further improvement of the utility model, a threaded plug is provided at the bottom left of the fixed cover, and the threaded plug is screwed with the fixed cover.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. A filtering device for dust. By setting the water-absorbing sponge, reciprocating lead screw, slider, extrusion plate, limiting block and humidity sensor, when the air pressure in the air tank is insufficient during fire fighting and rescue and the air tank connected to the breathing mask is replaced with the device, during the process of dust filtration of the breathing traction gas through the filter element, the externally mixed dust with water vapor will first be dehumidified by the water-absorbing sponge. At this time, the inhaled gas will first be dehumidified by the water-absorbing sponge, and then when the humidity sensor detects that the humidity of the dehumidified gas is relatively high, the motor is started to drive the reciprocating lead screw to rotate. Further, under the limitation of the limiting block, the slider drives the extrusion plate to reciprocate to extrude the water adsorbed in the water-absorbing sponge, ensuring the water absorption effect of the water-absorbing sponge and the dust filtration effect of the filter element, and avoiding the damage to the respiratory mucosa caused by firefighters inhaling the gas with relatively high water vapor for a long time.

[0012] 2. A filtering device for dust. By setting the gear, toothed ring, turntable, fixed sleeve, positioning block and filter element, when the device filters a large amount of dust during long-term use, resulting in relatively laborious breathing for firefighters, by rubbing the gear to engage the toothed ring, further driving the filter element in the fixed sleeve to rotate by the turntable. When the positioning block compresses the spring and disengages from the turntable, and then the positioning block is re-engaged with the turntable under the elastic recovery of the spring, it is convenient to replace the filter element, and the operation is simple and convenient, thus facilitating the long-term rescue operation of firefighters. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model.

[0014] Figure 1 It is a schematic diagram of the overall structure of a filtering device for dust of the utility model.

[0015] Figure 2 It is a schematic cross-sectional structure diagram of a filtering device for dust of the utility model.

[0016] Figure 3This is a schematic top cross-sectional view of a fixing box for a dust filtering device of the present utility model.

[0017] Figure 4 This is a schematic right cross-sectional view of a turntable of a dust filtering device of the present utility model.

[0018] In the figure: 1. Connector; 2. Fixed cover; 3. Fixed pipe; 4. Humidity sensor; 5. Fixing box; 6. Motor; 7. Reciprocating lead screw; 8. Slide block; 9. Limit block; 10. Extrusion plate; 11. Water-absorbing sponge; 12. Fixed shaft; 13. Turntable; 14. Fixed sleeve; 15. Filter element; 16. Tooth ring; 17. Gear; 18. Spring; 19. Positioning block; 20. Threaded plug; 21. Storage battery; 22. Controller. Specific embodiments

[0019] The following further describes the present utility model in conjunction with specific embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent. In order to better illustrate the specific embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present utility model, all other specific embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0020] Embodiment 1

[0021] As Figures 1-4 shown, a dust filtering device includes a connector 1. The right end of the connector 1 is communicated with a fixed cover 2. The right end of the fixed cover 2 is communicated with a fixed pipe 3. The bottom end of the fixed pipe 3 is communicated with a fixing box 5. The front end of the fixing box 5 is fixedly connected with a motor 6. The end of the main shaft of the motor 6 is fixedly connected with a reciprocating lead screw 7 rotatably connected to the fixing box 5. The outer side of the reciprocating lead screw 7 is slidably connected with a slide block 8 slidably connected to the fixing box 5. The inner side of the slide block 8 is fixedly connected with a limit block 9 slidably connected to the reciprocating lead screw 7. The left end of the slide block 8 is fixedly connected with an extrusion plate 10 slidably connected to the fixing box 5. The outer side of the extrusion plate 10 is fixedly connected with a water-absorbing sponge 11, and the other end of the water-absorbing sponge 11 is fixedly connected with the fixing box 5. The inner side of the fixed cover 2 is fixedly connected with a fixed shaft 12. The outer side of the fixed shaft 12 is rotatably connected with a turntable 13. The inner side of the turntable 13 is fixedly connected with a fixed sleeve 14 slidably connected to the fixed cover 2. The inner side of the fixed sleeve 14 is slidably connected with a filter element 15. The bottom end of the fixed cover 2 is fixedly connected with a storage battery 21 and a controller 22 arranged horizontally.

[0022] Embodiment 2

[0023] As Figure 2 shown, to solve the problem that it is not convenient to start the motor 6 to control the pressing plate 10 to press the water-absorbing sponge 11 when the water-absorbing sponge 11 absorbs a large amount of water, a humidity sensor 4 is provided at the inner top end of the fixed tube 3, and the humidity sensor 4 is fixedly connected to the fixed tube 3. When the water-absorbing sponge 11 absorbs a large amount of water and the water absorption effect becomes poor, the humidity value detected by the humidity sensor 4 exceeds the set range, which facilitates starting the motor 6 to control the pressing plate 10 to press the water-absorbing sponge 11.

[0024] Embodiment 3

[0025] As Figures 1-2 shown, to solve the problem that it is not convenient to replace the filter element 15, a toothed ring 16 is fixedly connected to the outside of the turntable 13, a gear 17 penetrating the fixed cover 2 is meshed and connected to the outside of the toothed ring 16, and the gear 17 is rotatably connected to the fixed cover 2 through a rotating shaft. By rubbing the gear 17 to mesh with the toothed ring 16, the turntable 13 further drives the filter element 15 in the fixed sleeve 14 to rotate, which facilitates the replacement of the filter element 15.

[0026] Embodiment 4

[0027] As Figure 2 and Figure 4 shown, to solve the problem that the stability of the filter element 15 is poor after replacement, a spring 18 is provided on the fixed shaft 12, a positioning block 19 is fixedly connected to the end of the spring 18, and the positioning block 19 is slidably connected to the fixed shaft 12. One end of the positioning block 19 is arranged in a hemispherical shape, and the hemispherical end of the positioning block 19 is engaged with the turntable 13. After the filter element 15 is replaced, the positioning block 19 with one end arranged in a hemispherical shape is clamped with the turntable 13 under the elastic force of the spring 18, ensuring the stability of the filter element 15 in the fixed sleeve 14 after replacement.

[0028] Embodiment 5

[0029] As Figures 1-2 shown, to solve the problem that it is not convenient to take out the filter element 15 for replacement, a threaded plug 20 is provided at the left bottom end of the fixed cover 2, and the threaded plug 20 is screwed to the fixed cover 2. By rotating the threaded plug 20 to disengage it from the fixed cover 2, it is convenient to take out the filter element 15 for replacement.

[0030] In this embodiment, during the process of fire fighting and rescue, when the air pressure in the gas cylinder is insufficient and the gas cylinder connected to the breathing mask is replaced with the device, the sensing range of the humidity sensor 4 is set by the controller 22. When the device is connected to the mask through the connector 1 for use, the dust mixed with water vapor during breathing traction will first be dehumidified by absorbing water through the water-absorbing sponge 11, and then after passing through the fixed pipe 3, it will be filtered for dust through the filter element 15 in the top fixing sleeve 14. During the process of dehumidifying the inhaled gas by the water-absorbing sponge 11, when the humidity sensor 4 detects that the humidity of the dehumidified gas is too large and exceeds the set range, the controller 22 will start the motor 6 to drive the reciprocating screw rod 7 to rotate, and then the slider 8 will drive the pressing plate 10 to reciprocate under the limitation of the limiting block 9 to squeeze out the water adsorbed in the water-absorbing sponge 11, thereby ensuring the dust filtering effect of the filter element 15 and the water absorption effect of the water-absorbing sponge 11. When the device is used for a long time and the filter element 15 at the top filters more dust, which further causes the firefighters to breathe more laboriously, rub the gear 17 to engage with the toothed ring 16, and further make the turntable 13 drive the filter element 15 in the fixing sleeve 14 to rotate by sixty degrees. When the positioning block 19 arranged in a hemispherical shape at one end of the fixed shaft 12 compresses the spring 18 and disengages from the turntable 13 and then resets and engages with the turntable 13 again, the filter element 15 can be replaced, which facilitates the firefighters to carry out rescue operations for a long time. When all the filter elements 15 have been used, rotate the threaded plug 20 to disconnect it from the spiral connection with the fixed cover 2, and then take out the used filter element 15 for replacement.

[0031] The above is the preferred embodiment of the present invention. The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust filtering device, comprising a joint (1), characterized in that: The right end of the joint (1) is connected to a fixed cover (2), the right end of the fixed cover (2) is connected to a fixed pipe (3), the bottom end of the fixed pipe (3) is connected to a fixed box (5), the front end of the fixed box (5) is fixedly connected to a motor (6), the main shaft end of the motor (6) is fixedly connected to a reciprocating screw (7) rotatably connected to the fixed box (5), the outer side of the reciprocating screw (7) is slidably connected to a slider (8) slidably connected to the fixed box (5), the inner side of the slider (8) is fixedly connected to a limit block (9) slidably connected to the reciprocating screw (7), the left end of the slider (8) is fixedly connected to a stop block (9) slidably connected to the fixed box (5), and the left end of the slider (8) is fixedly connected to a stop block (9) slidably connected to the fixed box (5). ) is slidably connected to an extrusion plate (10), the outer side of the extrusion plate (10) is fixedly connected to a water-absorbing sponge (11), and the other end of the water-absorbing sponge (11) is fixedly connected to a fixed box (5), the inner side of the fixed cover (2) is fixedly connected to a fixed shaft (12), the outer side of the fixed shaft (12) is rotatably connected to a turntable (13), the inner side of the turntable (13) is fixedly connected to a fixed sleeve (14) slidably connected to the fixed cover (2), the inner side of the fixed sleeve (14) is slidably connected to a filter element (15), and the bottom end of the fixed cover (2) is fixedly connected to a storage battery (21) and a controller (22) arranged on the left and right.

2. A dust filtering device according to claim 1, characterized in that: A humidity sensor (4) is provided at the top end of the inner side of the fixed tube (3), and the humidity sensor (4) is fixedly connected to the fixed tube (3).

3. A dust filtering device according to claim 1, characterized in that: A gear ring (16) is fixedly connected to the outer side of the rotating disk (13), and a gear (17) that penetrates the fixed cover (2) is meshedly connected to the outer side of the gear ring (16), and the gear (17) is rotationally connected to the fixed cover (2) via a rotating shaft.

4. A dust filtering device according to claim 1, characterized in that: The fixed shaft (12) is provided with a spring (18), the end of the spring (18) is fixedly connected with a positioning block (19), and the positioning block (19) is slidably connected to the fixed shaft (12), one end of the positioning block (19) is hemispherically arranged, and one end of the hemispherically arranged positioning block (19) is snap-fitted and connected to the rotating disk (13).

5. The dust filtering device according to claim 1, characterized in that: A threaded plug (20) is provided at the left bottom end of the fixed cover (2), and the threaded plug (20) is screwedly connected to the fixed cover (2).

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