CN216275894U - Building engineering environmental protection desilting device - Google Patents
Building engineering environmental protection desilting device Download PDFInfo
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- CN216275894U CN216275894U CN202122842523.9U CN202122842523U CN216275894U CN 216275894 U CN216275894 U CN 216275894U CN 202122842523 U CN202122842523 U CN 202122842523U CN 216275894 U CN216275894 U CN 216275894U
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- cleaning
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- desilting
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Abstract
The utility model discloses an environment-friendly dredging device for construction engineering, which comprises a fixed plate, a storage barrel, a cover plate driving device, a cover plate, a dredging device, a cleaning driving device and a cleaning device, wherein support frames are arranged at two ends of the lower wall of the fixed plate, moving wheels are arranged at the lower ends of the support frames, fixing seats are symmetrically arranged on the support frames, the storage barrel is arranged between the two groups of fixing seats, the upper end of the storage barrel is provided with an opening, the cover plate driving device is arranged on the support frames, the cover plate is arranged on the cover plate driving device, the cover plate is tangent to the opening side of the storage barrel, the opening side of the storage barrel can be plugged when the environment-friendly dredging device is arranged on the fixing seats, a sludge conveying pipe is arranged between the dredging device and the side wall of the storage barrel, the cleaning driving device is arranged on the fixed plate, and the cleaning device is arranged on the cleaning driving device. The utility model relates to the technical field of dredging, and particularly provides an environment-friendly dredging device for construction engineering, which has a function of cleaning the inner wall of a storage barrel and can improve sludge pumping efficiency.
Description
Technical Field
The utility model relates to the technical field of dredging, in particular to an environment-friendly dredging device for constructional engineering.
Background
In the building work progress, need carry out the excavation of ground in advance so that subsequent work, when meetting rainwater weather, can form silt after ponding in the ground mixes with earth, need clear up the silt in the ground, just can ensure the firm and the intensity of ground.
The silt in current building site sediment removal device majority adopts the sludge pump to extract the ground, and the sludge pump meets the jam that the foreign matter caused the blow off pipe to the silt extraction in-process to reduced the work efficiency who extracts silt, long-time not can make the inner wall of storage bucket pile up silt to the inner wall clearance of storage bucket, and then the storage space of storage bucket is stored in the influence.
SUMMERY OF THE UTILITY MODEL
To above-mentioned condition, for remedying above-mentioned current defect, this scheme provides one kind and has the function to storing the clearance of bucket inner wall to have the building engineering environmental protection desilting device that improves extraction silt efficiency.
The technical scheme adopted by the utility model is as follows: the utility model provides a building engineering environmental protection dredging device, includes the fixed plate, stores bucket, apron drive arrangement, apron, dredging device, clean drive arrangement and cleaning device, fixed plate lower wall both ends are equipped with the support frame, the support frame lower extreme is equipped with the removal wheel, the symmetry is equipped with the fixing base on the support frame, store the bucket and locate between two sets of fixing bases, it sets up for the upper end opening to store the bucket, apron drive arrangement locates on the support frame, the apron is located on the apron drive arrangement, the apron is tangent with storage bucket opening side, can carry out the shutoff to storage bucket opening side during the use, dredging device locates on the fixing base, dredging device and storing are equipped with the silt conveying pipe between the bucket lateral wall, clean drive arrangement locates on the fixed plate, cleaning device locates on the clean drive arrangement.
Further, apron drive arrangement is including apron drive positive and negative motor, apron drive lead screw, apron drive guide bar and apron drive slider, apron drive positive and negative motor locates on the support frame, apron drive lead screw rotates and locates between storage bucket lateral wall and the support frame, apron drive lead screw is connected with the output shaft of apron drive positive and negative motor, apron drive guide bar locates between storage bucket lateral wall and the support frame, apron drive slider locates on the apron drive lead screw through threaded connection, apron drive slider slides and locates on the apron drive guide bar, the apron is located on the apron drive slider.
Further, the desilting device includes desilting spiral shell support, hydraulic stem, desilting spiral shell, desilting helical blade and desilting motor, desilting spiral shell support locates on the fixing base, the hydraulic stem is articulated to be located on the fixing base, the hydraulic stem is located desilting spiral shell support one side, be equipped with desilting spiral shell spout on one of them group of support frame, the desilting spiral shell is articulated to be located on the desilting spiral shell support, the desilting spiral shell is articulated to be located the free end of hydraulic stem, the desilting spiral shell slides and locates in the desilting spiral shell spout, be equipped with into silt mouth and silt outlet on the desilting spiral shell, the silt conveying pipe is located on the outlet, the desilting helical blade rotates and locates in the desilting spiral shell, the desilting motor is located on the desilting spiral shell, the desilting helical blade is connected with the output shaft of desilting motor.
Further, the cleaning driving device comprises a cleaning driving positive and negative motor, a cleaning driving rotating shaft support, a cleaning driving rotating shaft, a cleaning driving bevel gear, a cleaning driving driven rotating shaft, a cleaning driving driven bevel gear, a cleaning driving lead screw, a cleaning driving sleeve and a cleaning driving connecting plate, wherein the cleaning driving positive and negative motor and the cleaning driving rotating shaft support are both arranged on a fixed plate, the cleaning driving rotating shaft is rotatably arranged on the cleaning driving rotating shaft support, the cleaning driving rotating shaft is connected with an output shaft of the cleaning driving positive and negative motor, the cleaning driving bevel gear is arranged on the cleaning driving rotating shaft, the cleaning driving driven rotating shaft is rotatably arranged on the fixed plate, the cleaning driving driven bevel gear is arranged on the cleaning driving driven rotating shaft, and the cleaning driving driven bevel gear is meshed with the cleaning driving bevel gear, clean drive lead screw rotates and locates the fixed plate below, clean drive lead screw is connected with clean drive driven spindle, clean drive sleeve locates on the clean drive lead screw through threaded connection, clean drive connecting plate is located on the clean drive sleeve, clean drive initiative conical gear, clean drive driven spindle, clean drive driven conical gear, clean drive lead screw and clean drive sleeve all are equipped with two sets ofly.
Further, the cleaning device comprises a cleaning motor, a cleaning rotating shaft, a belt, a rotating joint and a cleaning head, the cleaning motor is arranged on the cleaning driving connecting plate, the cleaning rotating shaft is rotatably arranged on the cleaning driving connecting plate and extends to the position below the cleaning driving connecting plate, the cleaning rotating shaft is arranged in a hollow mode, belt discs are arranged on an output shaft of the cleaning motor and the cleaning rotating shaft respectively, the belt is sleeved on the belt discs, the rotating joint is arranged on the cleaning rotating shaft, a water inlet pipe is arranged on the rotating joint and is a hose, the rotating joint is communicated with the cleaning rotating shaft, the cleaning head is arranged on the cleaning rotating shaft and is positioned below the cleaning driving connecting plate, the cleaning head is arranged in a hollow mode and is communicated with the cleaning rotating shaft, and a cleaning brush and a water outlet hole are arranged on the cleaning head, the cleaning brush and the water outlet holes are provided with a plurality of groups.
Further, the sludge conveying pipe is a hose.
Further, the lower end of the storage barrel is provided with a discharge hole.
Furthermore, a traction frame is hinged on the support frame.
The utility model with the structure has the following beneficial effects: this scheme building engineering environmental protection desilting device through clean drive arrangement and cleaning device complex setting, has realized clearing up the accumulational silt on storing the bucket inner wall, through the setting of desilting device, has improved the work efficiency who extracts silt.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic overall structure diagram of an environment-friendly dredging device for construction engineering provided by the utility model.
Wherein, 1, a fixed plate, 2, a storage barrel, 3, a cover plate driving device, 4, a cover plate, 5, a dredging device, 6, a cleaning driving device, 7, a cleaning device, 8, a supporting frame, 9, a moving wheel, 10, a fixed seat, 11, a silt conveying pipe, 12, a cover plate driving positive and negative motor, 13, a cover plate driving screw rod, 14, a cover plate driving guide rod, 15, a cover plate driving slide block, 16, a dredging spiral shell bracket, 17, a hydraulic rod, 18, a dredging spiral shell, 19, a dredging spiral blade, 20, a dredging motor, 21, a silt inlet, 22, a cleaning driving positive and negative motor, 23, a cleaning driving rotating shaft bracket, 24, a cleaning driving rotating shaft, 25, a cleaning driving conical gear, 26, a cleaning driving driven rotating shaft, 27, a cleaning driving driven conical gear, 28, a cleaning driving screw rod, 29, a cleaning driving sleeve, 30 and a cleaning driving connecting plate, 31. cleaning motor 32, cleaning rotating shaft 33, belt 34, rotary joint 35, cleaning head 36, water inlet pipe 37, discharge port 38, traction frame 39, cleaning brush 40 and water outlet hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the technical solution adopted by the utility model is as follows: the utility model provides a building engineering environmental protection dredging device, which comprises a fixing plate 1, store bucket 2, apron drive arrangement 3, apron 4, dredging device 5, clean drive arrangement 6 and cleaning device 7, 1 lower wall both ends of fixed plate are equipped with support frame 8, 8 lower extremes of support frame are equipped with removal wheel 9, the symmetry is equipped with fixing base 10 on the support frame 8, it locates between two sets of fixing base 10 to store bucket 2, it sets up to store bucket 2 for the upper end opening, apron drive arrangement 3 locates on the support frame 8, apron 4 is located on apron drive arrangement 3, apron 4 is tangent with 2 opening sides of storage bucket, can carry out the shutoff to 2 opening sides of storage bucket during the use, dredging device 5 is located on fixing base 10, dredging device 5 and storing are equipped with defeated silt pipe 11 between the 2 lateral walls of bucket, clean drive arrangement 6 is located on fixed plate 1, cleaning device 7 is located on clean drive arrangement 6.
As shown in fig. 1, the cover plate driving device 3 includes a cover plate driving positive and negative motor 12, a cover plate driving lead screw 13, a cover plate driving guide rod 14 and a cover plate driving slide block 15, the cover plate driving positive and negative motor 12 is disposed on the supporting frame 8, the cover plate driving lead screw 13 is rotatably disposed between the side wall of the storage barrel 2 and the supporting frame 8, the cover plate driving lead screw 13 is connected to an output shaft of the cover plate driving positive and negative motor 12, the cover plate driving guide rod 14 is disposed between the side wall of the storage barrel 2 and the supporting frame 8, the cover plate driving slide block 15 is disposed on the cover plate driving lead screw 13 through a threaded connection, the cover plate driving slide block 15 is slidably disposed on the cover plate driving guide rod 14, and the cover plate 4 is disposed on the cover plate driving slide block 15.
As shown in fig. 1, the dredging device 5 comprises a dredging spiral shell support 16, a hydraulic rod 17, a dredging spiral shell 18, a dredging spiral blade 19 and a dredging motor 20, the dredging spiral shell support 16 is arranged on a fixed seat 10, the hydraulic rod 17 is hinged on the fixed seat 10, the hydraulic rod 17 is positioned at one side of the dredging spiral shell support 16, a dredging spiral shell sliding groove is formed in one group of supporting frames 8, a dredging spiral shell 18 is hinged to a dredging spiral shell support 16, the dredging spiral shell 18 is hinged to the free end of a hydraulic rod 17, the dredging spiral shell 18 is slidably arranged in the dredging spiral shell sliding groove, a dredging inlet 21 and a dredging outlet are formed in the dredging spiral shell 18, a sludge conveying pipe 11 is arranged on the dredging outlet, dredging spiral blades 19 are rotatably arranged in the dredging spiral shell 18, a dredging motor 20 is arranged on the dredging spiral shell 18, and the dredging spiral blades 19 are connected with an output shaft of the dredging motor 20.
As shown in fig. 1, the cleaning driving device 6 includes a cleaning driving forward and backward motor 22, a cleaning driving shaft support 23, a cleaning driving shaft 24, a cleaning driving bevel gear 25, a cleaning driving driven shaft 26, a cleaning driving driven bevel gear 27, a cleaning driving lead screw 28, a cleaning driving sleeve 29 and a cleaning driving connecting plate 30, the cleaning driving forward and backward motor 22 and the cleaning driving shaft support 23 are both disposed on the fixing plate 1, the cleaning driving shaft 24 is rotatably disposed on the cleaning driving shaft support 23, the cleaning driving shaft 24 is connected with an output shaft of the cleaning driving forward and backward motor 22, the cleaning driving shaft 25 is disposed on the cleaning driving shaft 24, the cleaning driving driven shaft 26 is rotatably disposed on the fixing plate 1, the cleaning driving driven bevel gear 27 is disposed on the cleaning driving driven shaft 26, the cleaning driving bevel gear 27 is engaged with the cleaning driving shaft 25, the cleaning driving screw 28 is rotatably arranged below the fixing plate 1, the cleaning driving screw 28 is connected with the cleaning driving driven rotating shaft 26, the cleaning driving sleeve 29 is arranged on the cleaning driving screw 28 through threaded connection, the cleaning driving connecting plate 30 is arranged on the cleaning driving sleeve 29, and the cleaning driving bevel gear 25, the cleaning driving driven rotating shaft 26, the cleaning driving driven bevel gear 27, the cleaning driving screw 28 and the cleaning driving sleeve 29 are respectively provided with two groups.
As shown in fig. 1, the cleaning device 7 includes a cleaning motor 31, a cleaning rotating shaft 32, a belt 33, a rotating joint 34 and a cleaning head 35, the cleaning motor 31 is disposed on a cleaning driving connecting plate 30, the cleaning rotating shaft 32 is rotatably disposed on the cleaning driving connecting plate 30, the cleaning rotating shaft 32 extends to a position below the cleaning driving connecting plate 30, the cleaning rotating shaft 32 is hollow, belt discs are disposed on an output shaft of the cleaning motor 31 and the cleaning rotating shaft 32, the belt 33 is sleeved on the belt discs, the rotating joint 34 is disposed on the cleaning rotating shaft 32, a water inlet pipe 36 is disposed on the rotating joint 34, the water inlet pipe 36 is a hose, the rotating joint 34 is communicated with the cleaning rotating shaft 32, the cleaning head 35 is disposed on the cleaning rotating shaft 32, the cleaning head 35 is disposed below the cleaning driving connecting plate 30, the cleaning head 35 is hollow, the cleaning head 35 is communicated with the cleaning rotating shaft 32, the cleaning head 35 is provided with a cleaning brush 39 and a water outlet 40, the cleaning brush 39 and the water outlet hole 40 are provided with a plurality of groups.
As shown in FIG. 1, the sludge transporting pipe 11 is a hose.
As shown in fig. 1, the storage tub 2 is provided at a lower end thereof with a discharge port 37.
As shown in fig. 1, a traction frame 38 is hinged on the support frame 8.
When the device is used in detail, when sludge in a foundation needs to be extracted, the angle of the dredging device 5 is adjusted through the hydraulic adjusting rod 17, the position of the sludge inlet 21 is convenient to adjust, so that the sludge in the foundation can be completely extracted, after the angle of the dredging device 5 is adjusted, the dredging motor 20 is started, the output shaft of the dredging motor 20 drives the dredging helical blade 19 to rotate, the dredging helical blade 19 rotates, so that the sludge in the foundation enters the storage barrel 2 through the sludge conveying pipe 11, the environment-friendly dredging device for building engineering filled with the sludge can be moved through the connection of the tractor and the traction frame 38, the sludge in the storage barrel 2 is removed through opening the discharge port 37 after the device is moved to a specified position, when the inner wall of the storage barrel 2 needs to be cleaned, the cover plate drives the positive and negative motor 12, the output shaft of the cover plate driving positive and negative motor 12 drives the cover plate driving screw rod 13 to rotate, the cover plate driving screw rod 13 rotates to drive the cover plate driving slide block 15 to move along the direction of the cover plate driving guide rod 14, the cover plate driving slide block 15 moves to drive the cover plate 4 to move, the cover plate 4 moves to enable an opening of the storage barrel 2 to leak, then the cleaning driving forward and reverse motor 22 is started, an output shaft of the cleaning driving forward and reverse motor 22 drives the cleaning driving rotating shaft 24 to rotate, the cleaning driving rotating shaft 24 rotates to drive the cleaning driving conical gear 25 to rotate, the cleaning driving conical gear 25 rotates to drive the cleaning driving driven conical gear 27 to rotate, the cleaning driving driven conical gear 27 rotates to drive the cleaning driving driven rotating shaft 26 to rotate, the cleaning driving driven rotating shaft 26 rotates to drive the cleaning driving screw 28 to rotate, the cleaning driving screw 28 rotates to drive the cleaning driving sleeve 29 to move, the cleaning driving sleeve 29 moves to drive the cleaning driving connecting plate 30 to move, the cleaning driving connecting plate 30 moves to drive the cleaning device 7 to enter the storage barrel 2, the water inlet pipe 36 is opened, and the cleaning motor 31 is started, the output shaft of cleaning motor 31 drives belt 33 rotatory, belt 33 is rotatory to be driven clean pivot 32 rotatory, clean pivot 32 is rotatory to be driven cleaning head 35 rotatory, cleaning head 35 is rotatory to be driven cleaning brush 39 and is cleaned storing 2 inner walls of bucket, water passes through rotary joint 34 through inlet tube 36, clean pivot 32 gets into in the cleaning head 35, and discharge through apopore 40 and clean storing 2 inner walls of bucket, clean back water and silt are discharged through discharge gate 37.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a building engineering environmental protection dredging device which characterized in that: including fixed plate, storage bucket, apron drive arrangement, apron, desilting device, clean drive arrangement and cleaning device, fixed plate lower wall both ends are equipped with the support frame, the support frame lower extreme is equipped with the removal wheel, the symmetry is equipped with the fixing base on the support frame, storage bucket locates between two sets of fixing bases, storage bucket is the upper end opening setting, apron drive arrangement locates on the support frame, the apron is located on the apron drive arrangement, the apron is tangent with storage bucket opening side, can carry out the shutoff to storage bucket opening side during the use, the desilting device is located on the fixing base, be equipped with defeated silt pipe between desilting device and the storage bucket lateral wall, clean drive arrangement locates on the fixed plate, cleaning device locates on the clean drive arrangement.
2. The environment-friendly dredging device for building engineering according to claim 1, characterized in that: the cover plate driving device comprises a cover plate driving positive and negative motor, a cover plate driving lead screw, a cover plate driving guide rod and a cover plate driving sliding block, the cover plate driving positive and negative motor is arranged on the supporting frame, the cover plate driving lead screw is rotatably arranged between the side wall of the storage barrel and the supporting frame, an output shaft of the cover plate driving lead screw and the cover plate driving positive and negative motor is connected, the cover plate driving guide rod is arranged between the side wall of the storage barrel and the supporting frame, the cover plate driving sliding block is arranged on the cover plate driving lead screw through threaded connection, the cover plate driving sliding block is arranged on the cover plate driving guide rod in a sliding mode, and the cover plate is arranged on the cover plate driving sliding block.
3. The environment-friendly dredging device for building engineering according to claim 2, characterized in that: the desilting device comprises a desilting spiral shell support, a hydraulic rod, a desilting spiral shell, desilting spiral blades and a desilting motor, the desilting spiral shell support is arranged on a fixing seat, the hydraulic rod is hinged to the fixing seat, the hydraulic rod is located on one side of the desilting spiral shell support, a desilting spiral shell sliding groove is formed in one group of supporting frames, the desilting spiral shell is hinged to the desilting spiral shell support, the desilting spiral shell is hinged to the free end of the hydraulic rod, the desilting spiral shell is slidably arranged in the desilting spiral shell sliding groove, a desilting inlet and a desilting outlet are formed in the desilting spiral shell, a silt conveying pipe is arranged on the desilting outlet, the desilting spiral blades are rotatably arranged in the desilting spiral shell, the desilting motor is arranged on the desilting spiral shell, and the desilting spiral blades are connected with an output shaft of the desilting motor.
4. The environment-friendly dredging device for building engineering according to claim 3, characterized in that: the cleaning driving device comprises a cleaning driving positive and negative motor, a cleaning driving rotating shaft support, a cleaning driving rotating shaft, a cleaning driving bevel gear, a cleaning driving driven rotating shaft, a cleaning driving driven bevel gear, a cleaning driving lead screw, a cleaning driving sleeve and a cleaning driving connecting plate, wherein the cleaning driving positive and negative motor and the cleaning driving rotating shaft support are arranged on a fixed plate, the cleaning driving rotating shaft is rotatably arranged on the cleaning driving rotating shaft support, the cleaning driving rotating shaft is connected with an output shaft of the cleaning driving positive and negative motor, the cleaning driving bevel gear is arranged on the cleaning driving rotating shaft, the cleaning driving driven rotating shaft is rotatably arranged on the fixed plate, the cleaning driving driven bevel gear is arranged on the cleaning driving driven rotating shaft, and the cleaning driving driven bevel gear is meshed with the cleaning driving bevel gear, clean drive lead screw rotates and locates the fixed plate below, clean drive lead screw is connected with clean drive driven spindle, clean drive sleeve locates on the clean drive lead screw through threaded connection, clean drive connecting plate is located on the clean drive sleeve, clean drive initiative conical gear, clean drive driven spindle, clean drive driven conical gear, clean drive lead screw and clean drive sleeve all are equipped with two sets ofly.
5. The environment-friendly dredging device for building engineering according to claim 4, characterized in that: the cleaning device comprises a cleaning motor, a cleaning rotating shaft, a belt, a rotating joint and a cleaning head, the cleaning motor is arranged on the cleaning driving connecting plate, the cleaning rotating shaft is rotatably arranged on the cleaning driving connecting plate and extends to the lower part of the cleaning driving connecting plate, the cleaning rotating shaft is arranged in a hollow way, belt discs are arranged on the output shaft of the cleaning motor and the cleaning rotating shaft, the belt is sleeved on the belt pulley, the rotary joint is arranged on the cleaning rotating shaft, the rotary joint is provided with a water inlet pipe, the water inlet pipe is a hose, the rotary joint is communicated with the cleaning rotating shaft, the cleaning head is arranged on the cleaning rotating shaft, the cleaning head is positioned below the cleaning driving connecting plate, the cleaning head is arranged in a hollow way and is communicated with the cleaning rotating shaft, be equipped with cleaning brush and apopore on the cleaning head, cleaning brush and apopore all are equipped with the multiunit.
6. The environment-friendly dredging device for building engineering according to claim 1, characterized in that: the sludge conveying pipe is a hose.
7. The environment-friendly dredging device for building engineering according to claim 1, characterized in that: the lower end of the storage barrel is provided with a discharge hole.
8. The environment-friendly dredging device for building engineering according to claim 1, characterized in that: the support frame is hinged with a traction frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842523.9U CN216275894U (en) | 2021-11-19 | 2021-11-19 | Building engineering environmental protection desilting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122842523.9U CN216275894U (en) | 2021-11-19 | 2021-11-19 | Building engineering environmental protection desilting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216275894U true CN216275894U (en) | 2022-04-12 |
Family
ID=81035851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122842523.9U Active CN216275894U (en) | 2021-11-19 | 2021-11-19 | Building engineering environmental protection desilting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216275894U (en) |
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2021
- 2021-11-19 CN CN202122842523.9U patent/CN216275894U/en active Active
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