CN211384342U - Two grades of dust removal spraying cars of construction - Google Patents
Two grades of dust removal spraying cars of construction Download PDFInfo
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- CN211384342U CN211384342U CN202020000906.4U CN202020000906U CN211384342U CN 211384342 U CN211384342 U CN 211384342U CN 202020000906 U CN202020000906 U CN 202020000906U CN 211384342 U CN211384342 U CN 211384342U
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Abstract
The utility model provides a two-stage dust removal spraying vehicle for building construction, which comprises a base and an air gathering cylinder, wherein the bottom of the base is rotatably provided with a roller, the top of the base is rotatably provided with a rotating seat driven by a first driving motor to rotate, the air gathering cylinder is rotatably arranged on the rotating seat, a pitching oil cylinder is jointly hinged between the air gathering cylinder and the rotating seat, the air gathering cylinder comprises a front end air cylinder and a rear end air cylinder, the front end of the front end air cylinder is internally fixed with an annular water pipe, the annular water pipe is provided with a plurality of atomizing heads, the front end air cylinder is internally provided with an annular cylinder, the annular cylinder is internally provided with an inner air cavity, an outer air cavity is formed between the outer wall of the annular cylinder and the inner wall of the front end air cylinder, the rear end of the rear end air cylinder is internally provided with a fan, the rear end of the air cylinder is internally provided with a first air inlet plate and a second air inlet plate, the second air inlet plate is driven by, the two-gear switching of the spraying range is realized, and the dust removal device has the characteristics of large dust removal range, wide application range and good dust removal effect.
Description
Technical Field
The utility model belongs to the technical field of the dust collecting equipment technique and specifically relates to a two grades of dust removal spraying cars of construction are related to.
Background
At construction's in-process, the inevitable meeting produces a large amount of raise dusts on the building site, and the worker people who live in on the building site for a long time can inhale a large amount of raise dusts, influences work easily, causes huge injury even to workman's health. In order to reduce dust fall on a construction site, a plurality of dust removal spraying vehicles are arranged on the construction site for dust removal.
A dust-removing spray gun machine is proposed in chinese patent with patent application No. 201820976403.3, which mainly has the problems that: the intensity that the fan produced wind can't be adjusted, therefore the fan produced wind remains unchanged to the impact strength of water for the range of spraying is fixed, can only remove dust in fixed range, and wind mainly concentrates on keeping away from the position of gathering wind section of thick bamboo inner wall at the flow in-process in addition, and cyclic annular atomising head is fixed on gathering wind section of thick bamboo tip and being close to the position of inner wall, can not directly impact the spun water in the atomising head, makes the scope of spraying dust removal less relatively.
Therefore, a two-grade dust removal spraying vehicle for building construction is needed, which can solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two grades of dust removal spraying cars of construction can realize two grades of switchings to the spraying range as required dust removal scope's size, has that dust removal scope is big, application scope is wide, the characteristics that dust removal effect is good.
The technical scheme of the utility model is realized like this:
the two-gear dust removal spraying vehicle for building construction comprises a base and a wind gathering cylinder which are arranged up and down;
four corners of the bottom of the base are respectively and rotatably provided with a roller for moving, the top of the base is rotatably provided with a rotating seat driven by a first driving motor to rotate, the top of the rotating seat is symmetrically provided with two vertically arranged supporting arms, the wind gathering cylinder is rotatably arranged on the two supporting arms, and a pitching oil cylinder is jointly hinged between the wind gathering cylinder and the top of the rotating seat;
gather the dryer including fixed front end dryer and rear end dryer together, the inside of front end dryer front end is fixed with the cyclic annular water pipe that is connected with the water pump, be equipped with the atomising head that a plurality of set up forward on the cyclic annular water pipe, run through in the front end dryer be provided with one with the coaxial annular barrel that sets up of front end dryer, the inside interior wind chamber that forms of annular barrel, annular barrel outer wall with form outer wind chamber between the front end dryer inner wall, the inside of rear end dryer rear end is provided with the fan, the inside first air inlet board and the second air inlet board of being provided with of rear end dryer, the second air inlet board is rotated by the actuating mechanism drive.
As a preferred technical scheme, the first air inlet plate is fixed at the front end inside the rear air duct and is coaxially arranged with the rear air duct, the rear end of the annular cylinder is fixed on the first air inlet plate, a plurality of first outer cavity air inlets are annularly arranged around the axis of the rear air duct at the periphery of the first air inlet plate, all the first outer cavity air inlets are annularly arranged around the axis of the rear air duct, each first outer cavity air inlet is communicated with the inside of the rear air duct and the outer air cavity, a plurality of first inner cavity air inlets are annularly and uniformly distributed at the middle part of the first air inlet plate, and each first inner cavity air inlet is communicated with the rear air duct and the inner air cavity.
As a preferred technical scheme, the second air inlet plate is rotatably installed at the rear side of the first air inlet plate and is coaxially arranged with the first air inlet plate, the front side wall of the second air inlet plate abuts against the rear side wall of the first air inlet plate, a plurality of second outer cavity air inlets are annularly and uniformly distributed on the periphery of the second air inlet plate, each second outer cavity air inlet is arranged opposite to the corresponding first outer cavity air inlet, and a plurality of second inner cavity air inlets are annularly and uniformly distributed in the middle of the second air inlet plate.
As a preferred technical scheme, actuating mechanism including set up in the second driving motor of rear end dryer below, second driving motor's casing is fixed in rotate on the seat, fixed mounting has a drive gear on second driving motor's the motor shaft, the periphery of second air inlet plate stretches out the rear end dryer, fixed mounting have one on the second air inlet plate lateral wall with the driven gear of drive gear looks adaptation, driven gear with drive gear meshes mutually.
As a preferred technical scheme, a dust cover is annularly arranged on the outer side wall of the rear end air duct, and the driving gear and the driven gear are both arranged in the dust cover.
As a preferred technical solution, the number of the second inner cavity air inlets is the same as the number of the first inner cavity air inlets, and the cross-sectional area of each second inner cavity air inlet is larger than that of each first inner cavity air inlet.
As a preferred technical scheme, the number of the second outer cavity air inlets is the same as that of the first outer cavity air inlets, and the opening area of the second outer cavity air inlets is the same as that of the first outer cavity air inlets.
As a preferred technical scheme, the rear end of the front end air duct and the front end of the rear end air duct are fixed together by riveting.
By adopting the technical scheme, the beneficial effects of the utility model are that:
because the base that two shelves of dust removal spraying trucks of construction set up from top to bottom and gather the dryer, using the utility model discloses the time, at first worker's people can be according to the needs that remove dust, promote the base will the utility model discloses settle the position department that removes dust at needs, start first driving motor, first driving motor drives and rotates the seat and rotate, aims at the front end that will gather the dryer and need carry out the direction that removes dust, when needs remove dust to other directions on simultaneously, need not worker's people and go to rotate the base, alleviateed staff's intensity of labour, and because the utility model discloses do not need to rotate the base and both can change the dust removal direction, the area that occupies during the use is little, consequently also can be applicable to the less building site in space, enlarged the utility model discloses an application scope.
Secondly, start fan and water pump, the water pump is taken out to the annular water pipe in the water tank, and spout the water in the annular water pipe forward through the atomising head, the fan starts to blow in strong wind stream to gathering the dryer, strong wind stream passes through second outer chamber air intake and first outer chamber air intake and enters into the outer wind cavity from the rear end dryer, the strong wind stream in the outer wind cavity finally directly blows to the position of annular water pipe and atomising head, give the impact force of the spun water in the atomising head, impact water stream forms the spraying and outwards sprays and can drive the spraying and spray to farther, carry out the dust removal of spraying in the building site, compare in the middle part position that traditional dust removal spraying equipment wind was concentrated in gathering the dryer and flows forward, the impact force of the wind in the wind gathering section of thick bamboo to the annular water inlet tube spray head jet water is less, and lead to the range of spraying to be little, the dust removal scope is little, in the utility model, the powerful wind current direct impact has increased the impact force of powerful wind current blowout water in to the atomising head on the position of cyclic annular water pipe and atomising head, has improved the utility model discloses the effect of removing dust has increased the range of spraying, thereby has enlarged the utility model discloses a dust removal scope.
Finally, the utility model discloses the in-process that removes dust starts the every single move hydro-cylinder, drives and gathers the dryer and carry out the pitching motion, adjusts the spraying angle that gathers the dryer, makes the utility model discloses both can carry out spray dedusting to the raise dust that produces subaerial, also can carry out spray dedusting to the raise dust in the air of low.
Because the rear end air duct is internally provided with the second air inlet plate driven by the driving mechanism to rotate, in the utility model, when a place with a short distance needs to be dedusted, each first inner cavity air inlet is arranged with the second inner cavity air inlet in a staggered way, the rear end of the inner air cavity is completely sealed, the strong air flow of the rear end air duct can not enter the inner air cavity through the first inner cavity air inlet and the second inner cavity air inlet, and the strong air flow can only enter the outer air cavity from the second outer cavity air inlet and the first outer cavity air inlet; when the place far away needs to be dedusted, the second driving motor is started to drive the driving gear to rotate, the driving gear drives the driven gear and the second air inlet plate to rotate, each first inner cavity air inlet is aligned with the corresponding second inner cavity air inlet, at the time, one part of the strong wind flow enters the outer wind cavity through the second outer cavity air inlet and the first outer cavity air inlet, the other part enters the inner wind cavity through the second inner cavity air inlet and the first inner cavity air inlet, the strong wind flow in the inner wind cavity and the outer wind cavity can directly impact on the positions of the annular water pipe and the atomizing spray head, the impact force of the strong wind flow on water sprayed in the atomizing spray head is increased again, thereby increasing the spraying range, realizing the two-gear switching of the spraying range of the utility model, so that the utility model can realize both short-distance small-range dedusting and long-distance large-range dedusting, thereby enlarging the application scope of the utility model.
Because the rear end dryer lateral wall is fitted with a contraceptive ring and is equipped with a dust cover, drive gear and driven gear all set up in the dust cover, if drive gear and driven gear directly expose in the outside, a large amount of raise dusts can cover in drive gear and driven gear's meshing department on the building site, can increase frictional force between drive gear and the driven gear, cause drive gear and driven gear wearing and tearing too fast, can cause drive gear and driven gear to block even damage even, the dust cover can avoid raise dusts or other big particulate matters in the air to cause the influence to drive gear and driven gear, thereby guaranteed the utility model discloses a normal use has prolonged the utility model discloses a life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural view of the wind gathering cylinder of the present invention;
fig. 5 is a sectional view taken along line B-B in fig. 4.
Wherein: 1. a base; 2. a wind gathering cylinder; 3. a roller; 4. a first drive motor; 5. a rotating seat; 6. a support arm; 7. a pitching oil cylinder; 8. a front end air duct; 9. a rear end air duct; 10. an annular water pipe; 11. a spray head; 12. an annular cylinder; 13. an inner air cavity; 14. an outer air cavity; 15. a fan; 16. a first air inlet plate; 17. a second air inlet plate; 18. a first outer cavity air inlet; 19. a first inner cavity air inlet; 20. a second outer cavity air inlet; 21. an air inlet of the second inner cavity; 22. a second drive motor; 23. a drive gear; 24. a driven gear; 25. a dust cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figures 1-3 together, the two-stage dust removal spraying vehicle for building construction comprises a base 1 and a wind gathering cylinder 2 which are arranged up and down.
Install a gyro wheel 3 that is used for the removal on four angles of base 1 bottom respectively, the top of base 1 is rotated and is installed and is rotated seat 5 by the drive pivoted of first driving motor 4, and the top symmetry of rotating seat 5 is provided with two vertical support arms 6 that set up, and wind gathering cylinder 2 rotates and installs on two support arms 6, gathers and to articulate a every single move hydro-cylinder 7 jointly between wind gathering cylinder 2 and the 5 tops of rotating seat.
The wind gathering barrel 2 comprises a front end wind barrel 8 and a rear end wind barrel 9 which are fixed together, an annular water pipe 10 connected with a water pump is fixed inside the front end of the front end wind barrel 8, a plurality of spray heads 11 which are arranged forwards are arranged on the annular water pipe 10, an annular barrel 12 which is coaxial with the front end wind barrel 8 is arranged in the front end wind barrel 8 in a penetrating mode, an inner air cavity 13 is formed inside the annular barrel 12, an outer air cavity 14 is formed between the outer wall of the annular barrel 12 and the inner wall of the front end wind barrel 8, a fan 15 is arranged inside the rear end of the rear end wind barrel 9, a first air inlet plate 16 and a second air inlet plate 17 are arranged inside the rear end wind barrel 9, and the second air inlet plate 17 is driven to rotate by a driving mechanism.
As shown in fig. 4 and 5, the first air inlet plate 16 is fixed at the front end inside the rear air duct 9 and is coaxially disposed with the rear air duct 9, the rear end of the annular cylinder 12 is fixed on the first air inlet plate 16, a plurality of first outer cavity air inlets 18 are annularly disposed around the periphery of the first air inlet plate 16, all the first outer cavity air inlets 18 are annularly arranged around the axis of the rear air duct 9, each first outer cavity air inlet 18 is communicated with the inside of the rear air duct 9 and the outer air chamber 14, a plurality of first inner cavity air inlets 19 are annularly and uniformly distributed in the middle of the first air inlet plate 16, and each first inner cavity air inlet 19 is communicated with the rear air duct 9 and the inner air chamber 13.
The second air inlet plate 17 is rotatably mounted on the rear side of the first air inlet plate 16 and is coaxially arranged with the first air inlet plate 16, the front side wall of the second air inlet plate 17 abuts against the rear side wall of the first air inlet plate 16, a plurality of second outer cavity air inlets 20 are annularly and uniformly distributed on the periphery of the second air inlet plate 17, each second outer cavity air inlet 20 is oppositely arranged with the corresponding first outer cavity air inlet 18, and a plurality of second inner cavity air inlets 21 are annularly and uniformly distributed in the middle of the second air inlet plate 17.
And, the actuating mechanism includes setting up in the second driving motor 22 of rear end dryer 9 below, and the casing of second driving motor 22 is fixed in on the seat 5 that rotates, and fixed mounting has a drive gear 23 on the motor shaft of second driving motor 22, and the rear end dryer 9 is stretched out to the periphery of second air inlet plate 17, and fixed mounting has a driven gear 24 with drive gear 23 looks adaptation on the second air inlet plate 17 lateral wall, and driven gear 24 meshes with drive gear 23 mutually.
In the utility model, when the place with close distance needs to be dedusted, each first inner cavity air inlet 19 is staggered with the second inner cavity air inlet 21, the rear end of the inner air cavity 13 is completely sealed, the strong airflow of the rear end air duct 9 can not enter the inner air cavity 13 through the first inner cavity air inlet 19 and the second inner cavity air inlet 21, and the strong airflow can only enter the outer air cavity 14 from the second outer cavity air inlet 20 and the first outer cavity air inlet 18; when the place far away needs to be dedusted, the second driving motor 22 is started to drive the driving gear 23 to rotate, the driving gear 23 drives the driven gear 24 and the second air inlet plate 17 to rotate, each first inner cavity air inlet 19 is aligned with the corresponding second inner cavity air inlet 21, at this time, one part of the strong wind flow enters the outer wind cavity 14 through the second outer cavity air inlet 20 and the first outer cavity air inlet 18, the other part enters the inner wind cavity 13 through the second inner cavity air inlet 21 and the first inner cavity air inlet 19, the strong wind flow in the inner wind cavity 13 and the outer wind cavity 14 can directly impact on the positions of the annular water pipe 10 and the atomizing head 11, the impact force of the strong wind flow on the water sprayed in the atomizing head 11 is increased again, thereby increasing the atomizing range, realizing the two-gear switching of the atomizing range of the utility model, and realizing the short-distance and small-range dedusting of the utility model, also can realize long-range dust removal on a large scale, and then enlarge the utility model discloses an application scope.
In addition, the ring is equipped with a dust cover 25 on the rear end dryer 9 lateral wall, drive gear 23 and driven gear 24 all set up in the dust cover 25, if drive gear 23 and driven gear 24 directly expose the outside, a large amount of raise dusts can cover the meshing department at drive gear 23 and driven gear 24 on the building site, can increase frictional force between drive gear 23 and the driven gear 24, cause drive gear 23 and driven gear 24 to wear out at the excessive speed, can cause drive gear 23 and driven gear 24 to block even damage even, dust cover 25 can avoid the raise dusts in the air or other large particles to cause the influence to drive gear 23 and driven gear 24, thereby guaranteed the utility model discloses a normal use has prolonged the utility model discloses a life.
The number of the second cavity inlets 21 is the same as the number of the first cavity inlets 19, and the cross-sectional area of each second cavity inlet 21 is larger than that of the first cavity inlet 19.
The number of the second outer cavity air inlets 20 is the same as that of the first outer cavity air inlets 18, and the opening area of the second outer cavity air inlets 20 is the same as that of the first outer cavity air inlets 18.
The rear end of the front end air duct 8 is fixed with the front end of the rear end air duct 9 through riveting.
The method of the utility model is as follows:
at first worker's people can be according to the needs that remove dust, promote base 1 will the utility model discloses settle the position department that removes dust in needs, start first driving motor 4, first driving motor 4 drives and rotates seat 5 and rotates, and the front end that will gather wind section of thick bamboo 2 is aimed at the direction that needs remove dust, when needs remove dust to other directions simultaneously, need not worker's people and goes to rotate base 1, has alleviateed staff's intensity of labour, moreover because the utility model discloses do not need to rotate base 1 and both can change the dust removal direction, the area that occupies during the use is little, consequently also can be applicable to the less building site in space, has enlarged the utility model discloses an application scope.
Secondly, a fan 15 and a water pump are started, the water in the water tank is pumped into the annular water pipe 10 by the water pump, the water in the annular water pipe 10 is sprayed forwards through a spray head 11, the fan 15 is started to blow a strong wind flow into the wind gathering barrel 2, the strong wind flow enters an outer wind cavity 14 from a rear wind barrel 9 through an outer cavity wind inlet 20 and a first outer cavity wind inlet 18, the strong wind flow in the outer wind cavity 14 is finally and directly blown to the positions of the annular water pipe 10 and the spray head 11, an impact force is given to the water sprayed out of the spray head 11, the impact water flow forms spray to be sprayed outwards and drives the spray to be sprayed farther, and the spray dust is removed in a construction site, compared with the traditional dust removal spraying equipment that the wind flows forwards at the middle position concentrated in the wind gathering barrel 2, the wind in the wind gathering barrel 2 has smaller impact force on the water of the spray head 11 on the annular water inlet pipe, and the spray range is small, the dust removal scope is little the utility model discloses in, powerful wind stream direct impact has increased the impact force of powerful wind stream to spouting water in the atomising head 11 on the position of cyclic annular water pipe 10 and atomising head 11, has improved the utility model discloses the effect of removing dust has increased the range of spraying, thereby has enlarged the utility model discloses a dust removal scope.
Finally, the utility model discloses the in-process that removes dust starts every single move hydro-cylinder 7, drives and gathers dryer 2 and carry out the pitching motion, adjusts the spraying angle that gathers dryer 2, makes the utility model discloses both can spray to the raise dust that produces subaerially and remove dust, also can spray to the raise dust in the air of low and remove dust.
To sum up, the utility model provides a two grades of dust removal spraying cars of construction can realize two grades of switchings to the spraying range as required dust removal scope's size, has that dust removal scope is big, application scope is wide, the characteristics that dust removal effect is good.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The two-gear dust removal spraying vehicle for building construction is characterized by comprising a base and a wind gathering cylinder which are arranged up and down;
four corners of the bottom of the base are respectively and rotatably provided with a roller for moving, the top of the base is rotatably provided with a rotating seat driven by a first driving motor to rotate, the top of the rotating seat is symmetrically provided with two vertically arranged supporting arms, the wind gathering cylinder is rotatably arranged on the two supporting arms, and a pitching oil cylinder is jointly hinged between the wind gathering cylinder and the top of the rotating seat;
gather the dryer including fixed front end dryer and rear end dryer together, the inside of front end dryer front end is fixed with the cyclic annular water pipe that is connected with the water pump, be equipped with the atomising head that a plurality of set up forward on the cyclic annular water pipe, run through in the front end dryer be provided with one with the coaxial annular barrel that sets up of front end dryer, the inside interior wind chamber that forms of annular barrel, annular barrel outer wall with form outer wind chamber between the front end dryer inner wall, the inside of rear end dryer rear end is provided with the fan, the inside first air inlet board and the second air inlet board of being provided with of rear end dryer, the second air inlet board is rotated by the actuating mechanism drive.
2. The two-stage dust removal spraying vehicle for building construction according to claim 1, wherein the first air inlet plate is fixed at the front end inside the rear air duct and is coaxially arranged with the rear air duct, the rear end of the annular cylinder is fixed on the first air inlet plate, a plurality of first outer cavity air inlets are annularly arranged around the axis of the rear air duct on the periphery of the first air inlet plate, all the first outer cavity air inlets are annularly arranged around the axis of the rear air duct, each first outer cavity air inlet is communicated with the inside of the rear air duct and the outer air cavity, a plurality of first inner cavity air inlets are annularly and uniformly distributed in the middle of the first air inlet plate, and each first inner cavity air inlet is communicated with the rear air duct and the inner air cavity.
3. The two-stage dust removal spraying vehicle for building construction according to claim 2, wherein the second air inlet plate is rotatably mounted on the rear side of the first air inlet plate and is coaxially arranged with the first air inlet plate, the front side wall of the second air inlet plate abuts against the rear side wall of the first air inlet plate, a plurality of second outer cavity air inlets are annularly and uniformly distributed on the periphery of the second air inlet plate, each second outer cavity air inlet is arranged opposite to the corresponding first outer cavity air inlet, and a plurality of second inner cavity air inlets are annularly and uniformly distributed in the middle of the second air inlet plate.
4. The two-stage dust removal spraying vehicle for building construction according to claim 3, wherein the driving mechanism comprises a second driving motor arranged below the rear-end air duct, a housing of the second driving motor is fixed on the rotating seat, a driving gear is fixedly mounted on a motor shaft of the second driving motor, the periphery of the second air inlet plate extends out of the rear-end air duct, a driven gear matched with the driving gear is fixedly mounted on the outer side wall of the second air inlet plate, and the driven gear is meshed with the driving gear.
5. The two-stage dust removal spraying vehicle for building construction according to claim 4, wherein a dust cover is annularly arranged on the outer side wall of the rear air duct, and the driving gear and the driven gear are both arranged in the dust cover.
6. The two-stage dust removal spraying vehicle for building construction according to claim 3, wherein the number of the second inner cavity air inlets is the same as that of the first inner cavity air inlets, and the cross-sectional area of each second inner cavity air inlet is larger than that of each first inner cavity air inlet.
7. The two-stage dust removal spraying vehicle for building construction according to claim 6, wherein the number of the second outer cavity air inlets is the same as that of the first outer cavity air inlets, and the opening area of the second outer cavity air inlets is the same as that of the first outer cavity air inlets.
8. The two-gear dust removal spraying vehicle for building construction according to claim 1, wherein the rear end of the front end air duct and the front end of the rear end air duct are fixed together by riveting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020000906.4U CN211384342U (en) | 2020-01-02 | 2020-01-02 | Two grades of dust removal spraying cars of construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020000906.4U CN211384342U (en) | 2020-01-02 | 2020-01-02 | Two grades of dust removal spraying cars of construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425206A (en) * | 2022-02-23 | 2022-05-03 | 艾靖然 | Portable dust fall equipment |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425206A (en) * | 2022-02-23 | 2022-05-03 | 艾靖然 | Portable dust fall equipment |
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