CN222501799U - Underground mining ventilation dust collector - Google Patents
Underground mining ventilation dust collector Download PDFInfo
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- CN222501799U CN222501799U CN202421333317.2U CN202421333317U CN222501799U CN 222501799 U CN222501799 U CN 222501799U CN 202421333317 U CN202421333317 U CN 202421333317U CN 222501799 U CN222501799 U CN 222501799U
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- pipe
- dust removal
- ventilation
- water tank
- dust
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- 239000000428 dust Substances 0.000 title claims abstract description 93
- 238000009423 ventilation Methods 0.000 title claims abstract description 64
- 238000005065 mining Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000003381 stabilizer Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 26
- 238000000746 purification Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 9
- 238000007790 scraping Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- Separation Of Particles Using Liquids (AREA)
Abstract
本实用新型公开了井下采矿通风除尘装置，具体涉及井下采矿通风领域，包括第一水箱，所述第一水箱的顶部设置有方形管和吸尘泵、液泵，所述方形管的顶部插设有连接方管，所述连接方管的顶部固定连接有通风管。本实用新型首先通过启动风机控制气体通过通风管的内部，并通过两个过滤板进行过滤实现通风降尘的作用，并启动液泵将第二水箱内部的液体通过雾化喷管雾化喷出并通过风机吹出扩散到空气中对空气中的灰尘进行打湿，提高降尘除尘效果，并通过拉动密封板控制过滤板移动通过刮板和毛刷对过滤板的表面清理，同时启动吸尘泵将灰尘输入除尘箱的内部进行净化除尘，提高除尘效果，且方便对过滤板进行清理，提高使用效果。
The utility model discloses an underground mining ventilation and dust removal device, specifically relates to the field of underground mining ventilation, including a first water tank, a square tube and a dust suction pump and a liquid pump are arranged on the top of the first water tank, a connecting square tube is inserted on the top of the square tube, and a ventilation pipe is fixedly connected to the top of the connecting square tube. The utility model first starts the fan to control the gas to pass through the inside of the ventilation pipe, and filters through two filter plates to achieve the function of ventilation and dust reduction, and starts the liquid pump to spray the liquid inside the second water tank through the atomizing nozzle and blow it out through the fan to diffuse into the air to wet the dust in the air, thereby improving the dust reduction and dust removal effect, and controls the filter plate to move by pulling the sealing plate to clean the surface of the filter plate through the scraper and the brush, and starts the dust suction pump to input the dust into the dust removal box for purification and dust removal, thereby improving the dust removal effect, and facilitating the cleaning of the filter plate, thereby improving the use effect.
Description
Technical Field
The utility model relates to the technical field of underground mining ventilation, in particular to an underground mining ventilation dust removal device.
Background
In the underground mine working environment, a ventilation device is required to be arranged underground to ensure the oxygen concentration of underground air, so that accidents are avoided, and secondly, dust with high concentration underground is raised, so that the human health is seriously endangered, the visibility of an operation place is greatly reduced, the sight of workers in the operation place is blocked, the safety production is seriously influenced, and therefore, the underground mining ventilation dust removing device is required.
Most of the existing underground coal mine ventilation devices are single in function and poor in practicability, and only have ventilation functions.
The patent application number is CN 202120347371.2's chinese patent discloses a colliery is ventilation dust collector in pit, including box and control box, box one end fixedly connected with air-supply line, first barrier plate is embedded to air-supply line one end, the box is kept away from the one end of air-supply line is provided with heat dissipation window and protection network, box one end fixedly connected with control box, fixedly connected with siren on the control box, on the control box one side fixedly connected with oxygen concentration sensor of siren. The ventilation or dust removal function can be selected according to the needs, the functions are various, the practicability is high, the consumption of electric energy is reduced through the oxygen concentration sensor and the dust detection sensor, the economy is good, the survival probability of miners is improved when a mine disaster is encountered, and the safety is high;
Then can see in combination with its description attached drawings that the effect of dust removal is realized through filtering the dust in the gas that passes through with the filter screen to filter the case, and the filter screen is accumulated more back with the dust of filter incasement and need wholly dismantle the back and just can clear up, and comparatively troublesome, and can only realize the effect of dust removal to the inside dust that gets into the device, and the dust removal effect is not good, inefficiency.
Disclosure of utility model
In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a ventilation and dust removal device for underground mining, so as to solve the problems set forth in the background art.
The underground mining ventilation dust removal device comprises a first water tank, wherein a square pipe, a dust suction pump and a liquid pump are arranged at the top of the first water tank, a connecting square pipe is inserted at the top of the square pipe, a ventilation pipe is fixedly connected to the top of the connecting square pipe, fans are symmetrically arranged on two sides of an inner cavity of the ventilation pipe, and an atomization spray pipe is arranged in the middle of one end of the ventilation pipe;
Two filter plates are inserted in the middle of the ventilation pipe, a guide plate is arranged between one fan and one filter plate, electric push rods are symmetrically arranged on two sides of the square pipe, and a cleaning mechanism is arranged between the guide plate and the filter plate;
The inner cavity of the first water tank is divided into a second water tank and a dust removal tank through a partition plate, and a porous plate and a vent pipe are arranged in the middle of the dust removal tank.
Preferably, the input end of the dust collection pump is communicated with the inner cavity of the square pipe, the output end of the square pipe is communicated with the inner cavity of the vent pipe, the top of the vent pipe is provided with an exhaust hole, and the top of the first water tank is provided with an exhaust hole.
Preferably, the bottom of first water tank symmetry is provided with the removal wheel all around, one side of first water tank is provided with the push rod, the bottom of first water tank is provided with the blow off pipe with the corresponding position of dust removal case, the inner chamber of blow off pipe is linked together with the inner chamber bottom of dust removal case.
Preferably, electric putter's output and the bottom wall body fixed connection of ventilation pipe, the bottom fixedly connected with stopper of connecting square pipe, the stopper sets up the middle part at square pipe, guide board sets up between two fans, the filter is located the dust absorption pump top and keeps away from one side of guide board.
Preferably, the input end of the liquid pump is communicated with the inner cavity of the second water tank, the output end of the liquid pump is communicated with the inner cavity of the atomizing spray pipe, and the middle part of the atomizing spray pipe is provided with an atomizing spray hole.
Preferably, the both sides symmetry fixedly connected with spacing card strip of filter, the top fixedly connected with closing plate of filter, two filters laminate mutually, spacing draw-in groove has been seted up with the corresponding position of spacing card strip in the middle part of ventilation pipe, spacing card strip sets up the middle part at spacing draw-in groove.
Preferably, the cleaning mechanism comprises a fixed plate fixed at the top of the inner cavity of the ventilation pipe, a scraping plate is arranged at the bottom of the fixed plate, a fixed block is fixedly connected to the bottom of the scraping plate, a hairbrush is fixedly connected to one side of the fixed block, and the bottoms of the hairbrush and the scraping plate are attached to the wall body of the filter plate.
Preferably, the cross-sectional shape of fixed plate sets up to "U" shape, the middle part fixedly connected with stabilizer bar of fixed plate, the spacing slider of top fixed connection of scraper blade, the stabilizer bar runs through the middle part of spacing slider, the one end cover that the stabilizer bar kept away from the fixed block is equipped with the spring.
The utility model has the technical effects and advantages that:
1. According to the utility model, firstly, the fan is started to control air to pass through the interior of the ventilation pipe and filter the air through the two filter plates to realize the effect of ventilation and dust fall, and the liquid in the second water tank is started to spray out through the atomizing spray pipe and blow out the air through the fan to wet dust in the air, so that the dust fall and dust removal effect is improved, the seal plate is pulled to control the filter plates to move to clean the surfaces of the filter plates through the scraping plates and the hairbrushes, and meanwhile, the dust collection pump is started to input the dust into the interior of the dust removal box to purify and remove the dust, so that the dust removal effect is improved, the filter plates are convenient to clean, and the use effect is improved;
2. The utility model also controls the ventilation pipe to move up and down by starting the electric push rod, and the height of the ventilation pipe can be adjusted, so that the gas with different heights in the underground space can pass through the middle part of the ventilation pipe according to the requirement, the dust removal effect is improved, the moving distance of the ventilation pipe is limited by the limiting block, the using effect is improved, the cleaning effect of the scraping plate and the brush on the filter plate can be improved by pushing the limiting slide block by the spring, the stability of the upward and downward movement of the filter plate is improved by matching the limiting clamping strip and the limiting clamping groove, and the cleaning effect is improved;
In conclusion, through the mutual influence of a plurality of effects, the surface of the filter is conveniently cleaned, the cleaning efficiency is improved, and the dust removing and dust settling effects are improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic cross-sectional structure of the present utility model.
Fig. 3 is a schematic cross-sectional structure of the ventilating duct of the present utility model.
Fig. 4 is a schematic view of a partial enlarged structure at a in fig. 3 according to the present utility model.
Fig. 5 is a schematic view showing the structure of the connecting section of the fixing plate and the scraper of the present utility model.
Fig. 6 is a schematic structural view of a filter plate according to the present utility model.
The device comprises a first water tank, a second water tank, a square pipe, a dust suction pump, a connecting square pipe, a ventilating pipe, an electric push rod, a fan, an atomizing spray pipe, a guide plate, a filter plate, an 11, a liquid pump, a 12, a second water tank, a 13, a dust removal tank, a 14, a porous plate, a 15, a ventilating pipe, a 16, an exhaust hole, a 17, a movable wheel, a 18, a push rod, a 19, a blow-off pipe, a 20, a limiting block, a 21, a limiting clamping strip, a 22, a sealing plate, a 23, a limiting clamping groove, a 24, a fixed plate, a 25, a scraping plate, a 26, a fixed block, a 27, a brush, a 28, a limiting sliding block, a 29, a stabilizing rod, a 30 and a spring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The underground mining ventilation dust removal device shown in the attached drawings 1-6 comprises a first water tank 1, wherein a square pipe 2, a dust suction pump 3 and a liquid pump 11 are arranged at the top of the first water tank 1, dust in the square pipe 2 can be sucked into the first water tank 1 through the dust suction pump 3, dust is conveniently removed, a connecting square pipe 4 is inserted into the top of the square pipe 2, a ventilation pipe 5 is fixedly connected to the top of the connecting square pipe 4, fans 7 are symmetrically arranged on two sides of an inner cavity of the ventilation pipe 5, an atomizing spray pipe 8 is arranged in the middle of one end of the ventilation pipe 5, gas passes through the middle of the ventilation pipe 5 through the fans 7, ventilation is achieved, liquid is injected into the atomizing spray pipe 8 through the liquid pump 11 and atomized and sprayed out, and atomized liquid can be sprayed out of a space to purify and remove dust;
Two filter plates 10 are inserted in the middle of the ventilation pipe 5, a guide plate 9 is arranged between one fan 7 and the filter plates 10, electric push rods 6 are symmetrically arranged on two sides of the square pipe 2, a cleaning mechanism is arranged between the guide plate 9 and the filter plates 10, dust can be filtered through gas in the middle of the ventilation pipe 5 through the filter plates 10, the gas entering the ventilation pipe 5 is guided through the guide plate 9, the electric push rods 6 are started to adjust the height of the ventilation pipe 5 according to needs, the adjustment and the use are convenient, and the cleaning mechanism is convenient for cleaning dust on the surface of the filter plates 10, so that the use effect is improved;
The inner chamber of first water tank 1 is divided into second water tank 12 and dust removal case 13 through the division board, and the middle part of dust removal case 13 is provided with perforated plate 14 and breather pipe 15, can carry out dust removal purification to the gas that has the dust through second water tank 12, stores the liquid for atomizing through second water tank 12, can produce the bubble with the gas that inputs the inside dust removal case 13 through breather pipe 15 to through the time that perforated plate 14 improves the bubble and stay in the liquid, improve the dust removal effect.
As shown in fig. 1 and 2, the input end of the dust suction pump 3 is communicated with the inner cavity of the square tube 2, the output end of the square tube 2 is communicated with the inner cavity of the vent tube 15, the top of the vent tube 15 is provided with a vent hole, the top of the first water tank 1 is provided with a vent hole 16, the square tube 2 is started to enable the middle parts of the square tube 2 and the square tube 4 to generate suction, and the suction is input into the dust removal box 13 through the vent tube 15 for dust removal and purification, and the use effect is achieved.
As shown in fig. 1 and 2, the bottom of the first water tank 1 is symmetrically provided with a movable wheel 17, one side of the first water tank 1 is provided with a push rod 18, a drain pipe 19 is arranged at a position corresponding to the dust removal tank 13 at the bottom of the first water tank 1, an inner cavity of the drain pipe 19 is communicated with the bottom of the inner cavity of the dust removal tank 13, the movable wheel 17 and the push rod 18 facilitate movement, and sludge in the dust removal tank 13 is conveniently discharged through the drain pipe 19.
As shown in fig. 1-3, the output end of the electric push rod 6 is fixedly connected with the bottom wall body of the ventilating pipe 5, the bottom end fixedly connected with limiting block 20 of the connecting square pipe 4 is arranged in the middle of the square pipe 2, the guide plate 9 is arranged between the two fans 7, the filter plate 10 is located at one side of the top of the dust suction pump 3, which is far away from the guide plate 9, the height of the fans 7 can be controlled by starting the electric push rod 6, the adjustment is convenient, the up-and-down movement distance of the connecting square pipe 4 is limited by the limiting block 20, the using effect is improved, and gas passing through the middle part of the ventilating pipe 5 can be filtered by the filter plate 10.
As shown in fig. 1 and 2, the input end of the liquid pump 11 is communicated with the inner cavity of the second water tank 12, the output end of the liquid pump 11 is communicated with the inner cavity of the atomizing spray pipe 8, an atomizing spray hole is formed in the middle of the atomizing spray pipe 8, and the liquid pump 11 is started to inject liquid into the atomizing spray pipe 8 and spray the liquid in an atomizing way, so that the liquid pump can be combined with the blowing of the fan 7 and spread into the air to remove dust.
As shown in fig. 1, 2, 3, 4 and 6, two sides of the filter plate 10 are symmetrically and fixedly connected with a limiting clamping strip 21, the top of the filter plate 10 is fixedly connected with a sealing plate 22, the two filter plates 10 are attached to each other, a limiting clamping groove 23 is formed in the middle of the ventilation pipe 5 and in a position corresponding to the limiting clamping strip 21, the limiting clamping strip 21 is arranged in the middle of the limiting clamping groove 23, the limiting clamping strip 21 is clamped in the limiting clamping groove 23, the peripheral sealing strength of the installation of the filter plate 10 is improved, the installation of the filter plate 10 is conveniently limited, and the filter plate 10 is convenient to disassemble, install and use.
As shown in fig. 2-5, the cleaning mechanism comprises a fixed plate 24 fixed at the top of the inner cavity of the ventilating pipe 5, a scraper 25 is arranged at the bottom of the fixed plate 24, a fixed block 26 is fixedly connected to the bottom of the scraper 25, a hairbrush 27 is fixedly connected to one side of the fixed block 26, the hairbrush 27 and the bottom end of the scraper 25 are attached to the wall body of the filter plate 10, the scraper 25 can scrape the wall body of the filter plate 10 by pulling the filter plate 10, residual dust on the surface of the filter plate 10 can be scraped, cleaning effect can be realized by cleaning the surface of the filter plate 10 through the hairbrush 27, surface cleaning of the filter plate 10 is facilitated, and the using effect is improved.
As shown in fig. 2-5, the cross section of the fixed plate 24 is set to be in a shape of a U, a stabilizer bar 29 is fixedly connected to the middle of the fixed plate 24, the top of the scraper 25 is fixedly connected with a limit slide 28, the stabilizer bar 29 penetrates through the middle of the limit slide 28, a spring 30 is sleeved at one end of the stabilizer bar 29, which is far away from the fixed block 26, and the spring 30 pushes the limit slide 28, so that the attaching and cleaning strength of the scraper 25 and the brush 27 to the filter plate 10 can be improved, the connection stability of the fixed plate 24 and the scraper 25 can be improved through the stabilizer bar 29, and the use effect can be improved.
When the utility model is used, the electric push rod 6 is started to control the ventilation pipe 5 to move to a preset height, the fan 7 is started to enable external air to pass through the middle part of the ventilation pipe 5 and the other end of the ventilation pipe 5 to be discharged, ventilation is convenient, and meanwhile, the air passing through the middle part of the ventilation pipe 5 is dedusted and filtered through the two filter plates 10 in the middle part of the ventilation pipe 5;
meanwhile, a liquid pump 11 is started, atomized gas is sprayed out through an atomization spray pipe 8, atomized liquid is sprayed out of the air at the position through a fan 7, and the dust removal effect is realized;
When the surface of the filter plate 10 needs to be cleaned, only the sealing plate 22 is pulled to drive the filter plate 10 to move up and down, and the dust suction pump 3 is started to generate suction force to the inside of the fan 7, and the fan 7 and the liquid pump 11 are controlled to stop at the moment;
the surface of the filter plate 10 is cleaned by the scraping plate 25 and the hairbrush 27, dust on the surface of the filter plate 10 automatically falls into the middle part of the square pipe 2 through the square pipe 4, and the dust in the middle part of the square pipe 2 is input into the dust removing box 13 through the vent pipe 15 by the dust suction pump 3, so that dust removing and cleaning are carried out, and cleaning effects are improved.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. The underground mining ventilation dust removal device comprises a first water tank (1) and is characterized in that a square pipe (2), a dust suction pump (3) and a liquid pump (11) are arranged at the top of the first water tank (1), a connecting square pipe (4) is inserted at the top of the square pipe (2), a ventilation pipe (5) is fixedly connected to the top of the connecting square pipe (4), fans (7) are symmetrically arranged on two sides of an inner cavity of the ventilation pipe (5), and an atomizing spray pipe (8) is arranged in the middle of one end of the ventilation pipe (5);
Two filter plates (10) are inserted in the middle of the ventilation pipe (5), a guide plate (9) is arranged between one fan (7) and each filter plate (10), electric push rods (6) are symmetrically arranged on two sides of the square pipe (2), and a cleaning mechanism is arranged between each guide plate (9) and each filter plate (10);
The inner cavity of the first water tank (1) is divided into a second water tank (12) and a dust removal tank (13) through a partition plate, and a porous plate (14) and a vent pipe (15) are arranged in the middle of the dust removal tank (13).
2. The underground mining ventilation dust removal device according to claim 1, wherein the input end of the dust collection pump (3) is communicated with the inner cavity of the square pipe (2), the output end of the square pipe (2) is communicated with the inner cavity of the ventilation pipe (15), the top of the ventilation pipe (15) is provided with an exhaust hole, and the top of the first water tank (1) is provided with an exhaust hole (16).
3. The underground mining ventilation dust removal device according to claim 1, wherein the moving wheels (17) are symmetrically arranged on the periphery of the bottom of the first water tank (1), a push rod (18) is arranged on one side of the first water tank (1), a drain pipe (19) is arranged at a position, corresponding to the dust removal box (13), of the bottom of the first water tank (1), and an inner cavity of the drain pipe (19) is communicated with the bottom of the inner cavity of the dust removal box (13).
4. The underground mining ventilation dust removal device according to claim 1, wherein the output end of the electric push rod (6) is fixedly connected with the bottom wall body of the ventilation pipe (5), the bottom end of the connecting square pipe (4) is fixedly connected with a limiting block (20), the limiting block (20) is arranged in the middle of the square pipe (2), the guide plate (9) is arranged between the two fans (7), and the filter plate (10) is positioned on one side, far away from the guide plate (9), of the top of the dust suction pump (3).
5. The underground mining ventilation dust removal device according to claim 1, wherein the input end of the liquid pump (11) is communicated with the inner cavity of the second water tank (12), the output end of the liquid pump (11) is communicated with the inner cavity of the atomizing spray pipe (8), and an atomizing spray hole is formed in the middle of the atomizing spray pipe (8).
6. The underground mining ventilation dust removal device according to claim 1, wherein limiting clamping strips (21) are symmetrically and fixedly connected to two sides of the filter plates (10), sealing plates (22) are fixedly connected to the tops of the filter plates (10), the two filter plates (10) are attached to each other, limiting clamping grooves (23) are formed in the middle of the ventilation pipe (5) at positions corresponding to the limiting clamping strips (21), and the limiting clamping strips (21) are arranged in the middle of the limiting clamping grooves (23).
7. The underground mining ventilation dust removal device according to claim 1, wherein the cleaning mechanism comprises a fixed plate (24) fixed at the top of the inner cavity of the ventilation pipe (5), a scraper (25) is arranged at the bottom of the fixed plate (24), a fixed block (26) is fixedly connected to the bottom of the scraper (25), a hairbrush (27) is fixedly connected to one side of the fixed block (26), and the bottom ends of the hairbrush (27) and the scraper (25) are respectively attached to the wall body of the filter plate (10).
8. The underground mining ventilation dust removal device of claim 7, wherein the cross-section of the fixed plate (24) is U-shaped, a stabilizer bar (29) is fixedly connected to the middle of the fixed plate (24), a limit sliding block (28) is fixedly connected to the top of the scraper blade (25), the stabilizer bar (29) penetrates through the middle of the limit sliding block (28), and a spring (30) is sleeved at one end, far away from the fixed block (26), of the stabilizer bar (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421333317.2U CN222501799U (en) | 2024-06-12 | 2024-06-12 | Underground mining ventilation dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421333317.2U CN222501799U (en) | 2024-06-12 | 2024-06-12 | Underground mining ventilation dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222501799U true CN222501799U (en) | 2025-02-18 |
Family
ID=94550332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421333317.2U Active CN222501799U (en) | 2024-06-12 | 2024-06-12 | Underground mining ventilation dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222501799U (en) |
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2024
- 2024-06-12 CN CN202421333317.2U patent/CN222501799U/en active Active
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