CN219816961U - Sand and stone screening device - Google Patents
Sand and stone screening device Download PDFInfo
- Publication number
- CN219816961U CN219816961U CN202321308542.6U CN202321308542U CN219816961U CN 219816961 U CN219816961 U CN 219816961U CN 202321308542 U CN202321308542 U CN 202321308542U CN 219816961 U CN219816961 U CN 219816961U
- Authority
- CN
- China
- Prior art keywords
- screen
- fixed plate
- support frame
- rotation
- screening device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012216 screening Methods 0.000 title claims abstract description 43
- 239000004576 sand Substances 0.000 title claims abstract description 37
- 239000004575 stone Substances 0.000 title description 7
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007790 scraping Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model relates to the technical field of screening devices and discloses a sand screening device, which comprises a supporting frame, wherein a first fixing plate and a second fixing plate which are symmetrically arranged left and right are arranged at the top of the supporting frame, a rotary screen is rotationally connected between the first fixing plate and the second fixing plate, an L-shaped fixing seat is arranged at the top of the left side of the first fixing plate, a rectangular fixing seat is arranged at the top of the right side of the second fixing plate, a rotating shaft is rotationally connected between the L-shaped fixing seat and the rectangular fixing seat, the rotating shaft is positioned at a position close to the top inside the rotary screen, and a plurality of scraping plates which are annularly arranged are arranged on the outer wall of the rotating shaft. This grit screening plant through the second servo motor drive axis of rotation that sets up to make the axis of rotation drive a plurality of scrapers and rotate, scrape the inboard of first screen cloth, second screen cloth and third screen cloth on the drum sieve, thereby avoid the screen cloth inboard of drum sieve to be stopped up, ensure the screening efficiency and the screening effect of drum sieve.
Description
Technical Field
The utility model relates to the technical field of screening devices, in particular to a sand screening device.
Background
In the production industries of stone exploitation, building construction and the like, the screening of materials with different particle sizes is a key for ensuring the quality of products.
The utility model discloses a grit screening plant of publication number CN217888616U, which comprises a frame, a driving device, the drum screen, be equipped with drive arrangement and drum screen in the frame, drive arrangement is used for driving the drum screen rotation, the drum screen includes the drum screen body, be provided with the screen cloth on the drum screen body, be equipped with annular retainer plate on the screen cloth outer periphery, annular retainer plate is a set of and radially distributes along the screen cloth, be equipped with a set of lug on the screen cloth inner periphery, the lug links to each other with annular retainer plate, the frame lower part is equipped with a set of hopper, the discharge hopper cooperation drum screen's discharge gate uses; in the screening process, the rotary screen is driven by the driving device to rotate so as to drive the convex blocks to rotate, and each time the convex blocks are contacted with the materials, the convex blocks can forcedly drive the materials to be dispersed; along with the continuous rotation of the working device, the accumulation phenomenon of the materials is eliminated, the actual contact surface area of the materials and the screen is increased, the use effect is good, and the screening efficiency and quality are ensured.
In the specific use process of the prior art, the convex blocks are arranged on the inner wall of the rotary screen, the rotary screen is driven by the driving device to rotate in the screening process, the convex blocks are driven to rotate, and each time the convex blocks are contacted with materials, the convex blocks can forcedly drive the materials to be dispersed; along with the continuous rotation of working arrangement, the accumulation phenomenon of material is eliminated, the actual contact surface area of material and screen cloth has been increased simultaneously, finally, the efficiency and the quality of screening have been improved, but the inner wall of drum sieve can be blockked up by the grit after long-time use, and above-mentioned prior art is through the compulsory material that drives of lug disperses, improved screening efficiency, but when the mesh of drum sieve is blockked up, will cause the grit that should screen out and not screen out, lead to the grit to continue to remove to next layer screen cloth, thereby cause the condition that part grit just shifted out by the filtration, therefore, the aforesaid prior art has certain use defect in the use.
Disclosure of Invention
The utility model provides a sand screening device, aiming at the defect that sand which is needed to be screened out is not screened out when the screen holes of a drum screen are blocked in the prior art, so that the sand is continuously moved to the next screen, and part of sand is removed without being filtered.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
the utility model provides a grit screening plant, includes the support frame, the height on the left side of support frame top is greater than the height on top right side, makes the top of support frame be the slope setting, and inclination is 2-5 to make the drum sieve also be the slope setting, when the drum sieve rotates, can make the grit slowly move down, avoid the grit to move too fast, thereby realize the effect of screening;
a first fixing plate is vertically arranged at the top of the supporting frame and close to the left side, a second fixing plate is vertically arranged at the top of the supporting frame and close to the right side, a rotary screen is rotatably connected between the first fixed plate and the second fixed plate and is used for screening sand and stones in a sectional manner;
the top of the left side of the first fixed plate is provided with an L-shaped fixed seat, the top of the right side of the second fixed plate is provided with a rectangular fixed seat, a rotating shaft is rotationally connected between the L-shaped fixed seat and the rectangular fixed seat, the rotating shaft is positioned at a position close to the top of the interior of the rotary screen, the outer wall of the rotating shaft is provided with a plurality of scraping plates distributed in an annular array, and the scraping plates are attached to the inner side of the screen of the rotary screen;
the axis of rotation is inside the drum sieve, and the rotation direction of axis of rotation is opposite with the rotation direction of drum sieve, and the axis of rotation drives a plurality of scrapers and rotates to clear the screen cloth of drum sieve and scrape, avoid the mesh of screen cloth to be blocked up.
Preferably, a feeding hole communicated with the left end of the rotary screen is formed in the left side of the first fixing plate, a feeding groove plate is arranged at the left side of the first fixing plate and located at the feeding hole, and sand is poured into the rotary screen by a user conveniently.
Preferably, a discharge hole communicated with the right end of the rotary screen is formed in the right side of the second fixing plate, a discharge groove plate is arranged on the right side of the second fixing plate and located at the position of the discharge hole, and the sand left in the rotary screen is guided out.
Preferably, the drum screen is provided with a first screen, a second screen and a third screen from left to right in sequence, the pore diameters of the first screen, the second screen and the third screen are gradually increased, the sand with smaller particles is screened firstly, then the sand with medium particles is screened, then the sand with larger particles is screened, and sand which does not meet the screening condition is guided out from the discharge trough plate to the outside.
Preferably, the bottom of the supporting frame and the positions under the first screen, the second screen and the third screen are respectively provided with a first discharging hopper, a second discharging hopper and a third discharging hopper from left to right in sequence, and sand and stones screened out in a segmented mode are respectively led into the first discharging hopper, the second discharging hopper and the third discharging hopper and respectively led out, so that the sand and stones are collected conveniently.
Preferably, a second servo motor is arranged at the top of the L-shaped fixing seat horizontal plate, the end part of the output shaft of the second servo motor penetrates through the left side of the L-shaped fixing seat vertical plate and is coaxially connected with the left end of the rotating shaft, and the rotating shaft is driven to rotate through the second servo motor, so that the rotating shaft drives a plurality of scraping plates to rotate.
Preferably, the top of support frame and the position that is close to first fixed plate right side are equipped with two supporting mechanism that are the fore-and-aft symmetry and set up, supporting mechanism includes the first U-shaped seat of fixed connection in the support frame top, first U-shaped seat internal rotation is connected with the gyro wheel, the outer wall of drum sieve and the position that is close to the left end are equipped with from the moving ring, the outer wall of moving ring carries out auxiliary stay to driven ring through two gyro wheels with the gyro wheel looks butt in two supporting mechanism, is favorable to the rotation of drum sieve.
Preferably, a driving mechanism is arranged at the top of the supporting frame and near the left side of the second fixing plate, the driving mechanism comprises a second U-shaped seat fixedly connected to the top of the supporting frame, a driving gear is rotationally connected to the second U-shaped seat, an outer gear ring is arranged at the outer wall of the drum screen and near the right end of the drum screen, the driving gear is in meshed transmission with the outer gear ring, and the driving gear drives the outer gear ring to rotate through the driving gear, so that the drum screen is driven to rotate.
Preferably, a first servo motor is arranged on the right side of the second U-shaped seat through a mounting plate, and the end part of an output shaft of the first servo motor penetrates through the right side of the second U-shaped seat and is coaxially connected with the driving gear, and the driving gear is driven to rotate through the first servo motor.
The utility model has the remarkable technical effects due to the adoption of the technical scheme:
1. this grit screening plant through the second servo motor drive axis of rotation that sets up to make the axis of rotation drive a plurality of scrapers and rotate, scrape the inboard of first screen cloth, second screen cloth and third screen cloth on the drum sieve, thereby avoid the screen cloth inboard of drum sieve to be stopped up, ensure the screening efficiency and the screening effect of drum sieve.
2. This grit screening plant drives the drum sieve through the actuating mechanism who sets up and rotates, carries out auxiliary stay to the drum sieve through two supporting mechanism to be favorable to the drum sieve to rotate.
3. This grit screening plant through the first play hopper, second play hopper and the third play hopper that set up, can separately derive the grit after sieving, is favorable to the user to collect the grit after sieving.
Drawings
FIG. 1 is a schematic view of a first view angle structure of the present utility model;
FIG. 2 is a schematic diagram of an overall second view structure according to the present utility model;
FIG. 3 is a schematic view of an assembled structure of a support frame, a support mechanism and a driving mechanism according to the present utility model;
fig. 4 is a schematic view of a part of the structure of the present utility model.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-supporting frame, 10-first discharging hopper, 11-second discharging hopper, 12-third discharging hopper, 2-first fixing plate, 20-feeding groove plate, 21-L-shaped fixing seat, 3-second fixing plate, 30-discharging groove plate, 31-rectangular fixing seat, 4-drum screen, 40-first screen, 41-second screen, 42-third screen, 43-driven ring, 44-external gear ring, 5-supporting mechanism, 50-first U-shaped seat, 51-roller, 6-driving mechanism, 60-second U-shaped seat, 61-driving gear, 62-first servo motor, 7-second servo motor, 8-rotating shaft and 9-scraping plate.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
Example 1
1-4, the sand screening device comprises a support frame 1, wherein the left side of the top of the support frame 1 is higher than the right side of the top, so that the top of the support frame 1 is obliquely arranged, and the inclination angle is 2-5 degrees, thereby enabling a rotary screen 4 to be obliquely arranged, enabling sand to slowly move downwards when the rotary screen 4 rotates, avoiding the sand from moving too fast, and realizing the screening effect;
a first fixed plate 2 is vertically arranged at the top of the support frame 1 and close to the left side, a second fixed plate 3 is vertically arranged at the top of the support frame 1 and close to the right side, and a rotary screen 4 is rotationally connected between the first fixed plate 2 and the second fixed plate 3 and used for sectionally screening sand and stones;
the top of the left side of the first fixed plate 2 is provided with an L-shaped fixed seat 21, the top of the right side of the second fixed plate 3 is provided with a rectangular fixed seat 31, a rotating shaft 8 is rotationally connected between the L-shaped fixed seat 21 and the rectangular fixed seat 31, the rotating shaft 8 is positioned at a position close to the top of the interior of the rotary screen 4, the outer wall of the rotating shaft 8 is provided with a plurality of scraping plates 9 distributed in an annular array, and the scraping plates 9 are attached to the inner side of the screen of the rotary screen 4;
the rotation shaft 8 is arranged inside the rotary screen 4, the rotation direction of the rotation shaft 8 is opposite to that of the rotary screen 4, and the rotation shaft 8 drives the plurality of scraping plates 9 to rotate, so that the screen mesh of the rotary screen 4 is scraped, and the screen mesh of the screen mesh is prevented from being blocked.
In this embodiment, the left side of first fixed plate 2 has seted up the feed inlet with drum sieve 4 left end intercommunication, and the left side of first fixed plate 2 just is located the position of feed inlet and is equipped with feeding frid 20, and convenient to use person pours the grit into drum sieve 4.
Specifically, the discharge gate with drum sieve 4 right-hand member intercommunication has been seted up on the right side of second fixed plate 3, and the right side of second fixed plate 3 just is located the position of discharge gate and is equipped with ejection of compact frid 30, derives drum sieve 4 interior screening remaining grit.
Further, the drum screen 4 is provided with a first screen 40, a second screen 41 and a third screen 42 from left to right in sequence, the screen pore diameters of the first screen 40, the second screen 41 and the third screen 42 are gradually increased, sand with smaller particles is screened firstly, sand with medium particles is screened again, sand with larger particles is screened later, and sand which does not meet screening conditions is led out from the discharge groove plate 30 to the outside.
Further, the first discharge hopper 10, the second discharge hopper 11 and the third discharge hopper 12 are sequentially arranged at the bottom of the supporting frame 1 and under the first screen 40, the second screen 41 and the third screen 42 from left to right, and the sand screened out in a segmented manner are respectively led into the first discharge hopper 10, the second discharge hopper 11 and the third discharge hopper 12 and respectively led out, so that the sand and the sand are collected conveniently.
Further, the top of L shape fixing base 21 horizontal plate is equipped with second servo motor 7, and the tip of second servo motor 7 output shaft passes the left side of the vertical board of L shape fixing base 21 and with the left end coaxial coupling of axis of rotation 8, through the rotation 8 rotation of second servo motor 7 drive axis of rotation to make axis of rotation 8 drive a plurality of scraper blades 9 and rotate.
Further, the top of support frame 1 and be close to the supporting mechanism 5 that the symmetry set up around being equipped with in the position on first fixed plate 2 right side, supporting mechanism 5 is including the first U-shaped seat 50 of fixed connection in support frame 1 top, and first U-shaped seat 50 internal rotation is connected with gyro wheel 51, and the outer wall of drum sieve 4 and the position that is close to the left end are equipped with from moving ring 43, and the outer wall of from moving ring 43 and the gyro wheel 51 looks butt in two supporting mechanism 5 carry out auxiliary stay to from moving ring 43 through two gyro wheels 51, are favorable to the rotation of drum sieve 4.
Further, a driving mechanism 6 is arranged at the top of the supporting frame 1 and near the left side of the second fixing plate 3, the driving mechanism 6 comprises a second U-shaped seat 60 fixedly connected to the top of the supporting frame 1, a driving gear 61 is rotationally connected to the second U-shaped seat 60, an outer gear ring 44 is arranged at the outer wall of the drum screen 4 and near the right end, the driving gear 61 is in meshed transmission with the outer gear ring 44, and the driving gear 61 drives the outer gear ring 44 to rotate, so that the drum screen 4 is driven to rotate.
Further, a first servo motor 62 is disposed on the right side of the second U-shaped seat 60 through a mounting plate, and an end portion of an output shaft of the first servo motor 62 passes through the right side of the second U-shaped seat 60 and is coaxially connected with the driving gear 61, and the driving gear 61 is driven to rotate through the first servo motor 62.
When the sand screening device of this embodiment is used, the user starts first servo motor 62 and second servo motor 7 work, under the effect of first servo motor 62, drive driving gear 61 rotates, driving gear 61 drives external tooth race 44 and rotates, thereby drive drum screen 4 and rotate, then the user will wait to sieve the grit of screening and pour into drum screen 4 from feed slot board 20, drum screen 4 rotates, drive grit slowly moves down, when the grit passes through from first screen 40, the grit of granule is sieved down, and export through first play hopper 10, when the grit passes through from second screen 41, granule medium is sieved down, and export through second play hopper 11, when the grit passes through from third screen 42, granule great grit is sieved down, and export through third play hopper 12, unsatisfied screening condition's is followed out from discharge slot board 30 and is gone out to external world, in drum screen 4's rotation in-process, second servo motor 7 rotates axis of rotation 8, and the rotation axis of rotation direction of rotation 8 is opposite to drum screen 8, thereby screen 4 rotation efficiency is avoided to sieve screen 8, screen 4 rotation 9 is realized to screen 4 rotation, screen 4 is stopped up to the screen cleaning effect is avoided to the rotation direction of the screen.
In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.
Claims (9)
1. The utility model provides a grit screening plant, includes support frame (1), the left height in support frame (1) top is greater than the height on top right side, the top of support frame (1) just is close to left position and is equipped with first fixed plate (2) perpendicularly, the top of support frame (1) just is close to right position and is equipped with second fixed plate (3) perpendicularly, rotate between first fixed plate (2) and second fixed plate (3) and be connected with drum sieve (4), its characterized in that: the utility model discloses a rotary screen, including cylinder screen (4), fixed plate (2), first fixed plate (2) left top is equipped with L shape fixing base (21), the top on second fixed plate (3) right side is equipped with rectangle fixing base (31), rotate between L shape fixing base (21) and rectangle fixing base (31) and be connected with axis of rotation (8), axis of rotation (8) are located the position that is close to the inside top of cylinder screen (4), the outer wall of axis of rotation (8) is equipped with a plurality of scraper blades (9) that are annular array and arrange, scraper blade (9) laminate with the screen cloth inboard of cylinder screen (4) mutually.
2. The sand screening device of claim 1, wherein: the left side of first fixed plate (2) is offered and is had the feed inlet with drum sieve (4) left end intercommunication, the left side of first fixed plate (2) just is located the position of feed inlet and is equipped with feeding frid (20).
3. The sand screening device of claim 1, wherein: the right side of second fixed plate (3) is offered and is had the discharge gate with drum sieve (4) right-hand member intercommunication, the right side of second fixed plate (3) just is located the position of discharge gate and is equipped with ejection of compact frid (30).
4. The sand screening device of claim 1, wherein: the rotary screen (4) is provided with a first screen (40), a second screen (41) and a third screen (42) from left to right in sequence, and the pore diameters of the first screen (40), the second screen (41) and the third screen (42) are gradually increased.
5. The sand screening device of claim 4, wherein: the bottom of the support frame (1) and the positions right below the first screen (40), the second screen (41) and the third screen (42) are sequentially provided with a first discharging hopper (10), a second discharging hopper (11) and a third discharging hopper (12) from left to right.
6. The sand screening device of claim 1, wherein: the top of L shape fixing base (21) horizontal plate is equipped with second servo motor (7), the tip of second servo motor (7) output shaft passes the left side of L shape fixing base (21) vertical plate and with the left end coaxial coupling of axis of rotation (8).
7. The sand screening device of claim 1, wherein: the top of support frame (1) and be close to supporting mechanism (5) that first fixed plate (2) right side was equipped with two and be fore-and-aft symmetry setting, supporting mechanism (5) are including fixed connection in first U-shaped seat (50) at support frame (1) top, first U-shaped seat (50) internal rotation is connected with gyro wheel (51), the outer wall of drum sieve (4) and the position that is close to the left end are equipped with from rotating ring (43), the outer wall of driven ring (43) and gyro wheel (51) looks butt in two supporting mechanism (5).
8. The sand screening device of claim 1, wherein: the top of support frame (1) and be close to second fixed plate (3) left position are equipped with actuating mechanism (6), actuating mechanism (6) are including second U-shaped seat (60) of fixed connection in support frame (1) top, second U-shaped seat (60) internal rotation is connected with driving gear (61), the outer wall of drum sieve (4) and the position that is close to the right-hand member are equipped with external gear ring (44), driving gear (61) and external gear ring (44) meshing transmission.
9. The sand screening device of claim 8, wherein: the right side of second U-shaped seat (60) is equipped with first servo motor (62) through the mounting panel, the tip of first servo motor (62) output shaft passes the right side of second U-shaped seat (60) and with driving gear (61) coaxial coupling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022232043852 | 2022-12-01 | ||
| CN202223204385 | 2022-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219816961U true CN219816961U (en) | 2023-10-13 |
Family
ID=88274011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321308542.6U Active CN219816961U (en) | 2022-12-01 | 2023-05-26 | Sand and stone screening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219816961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117282647A (en) * | 2023-10-20 | 2023-12-26 | 山东辛化硅胶有限公司 | Screening equipment is used in production of silica gel cat litter |
| CN117380520A (en) * | 2023-12-12 | 2024-01-12 | 山东宏昌路桥集团有限公司 | Gravel screening device for highway construction |
-
2023
- 2023-05-26 CN CN202321308542.6U patent/CN219816961U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117282647A (en) * | 2023-10-20 | 2023-12-26 | 山东辛化硅胶有限公司 | Screening equipment is used in production of silica gel cat litter |
| CN117282647B (en) * | 2023-10-20 | 2024-03-12 | 山东辛化硅胶有限公司 | Screening equipment is used in production of silica gel cat litter |
| CN117380520A (en) * | 2023-12-12 | 2024-01-12 | 山东宏昌路桥集团有限公司 | Gravel screening device for highway construction |
| CN117380520B (en) * | 2023-12-12 | 2024-02-13 | 山东宏昌路桥集团有限公司 | Gravel screening device for highway construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219816961U (en) | Sand and stone screening device | |
| CN110900824B (en) | Mixing device and method for making bricks by using casting waste sand | |
| CN115569699B (en) | Milling equipment for flour processing | |
| CN217963415U (en) | Screening plant that is difficult for blockking up | |
| CN218340289U (en) | Rotary screen with material raising function | |
| CN211538541U (en) | Concrete waste material separator | |
| CN115532364A (en) | Refractory material production is with smashing screening plant | |
| CN219356353U (en) | Fine powder unit of carrageenan production line | |
| CN218282525U (en) | Screening plant based on concrete fine sand is retrieved | |
| CN116747956A (en) | Grinding and screening device for continuous casting mold flux preparation | |
| CN208839951U (en) | A kind of casting model powder recycling dusting cover equipment | |
| CN110981146A (en) | Energy-saving and material-saving system of curing filter pressing equipment | |
| CN116078255A (en) | Material mixing device for processing permeable granite | |
| CN215997429U (en) | Feed fine processing filter sieve | |
| CN216323182U (en) | Adjustable type grit screening plant | |
| CN113477399B (en) | Sand making method by sand soil | |
| CN209156408U (en) | Washing sieve extension set for dregs processing | |
| CN113857028B (en) | Screening device for yellow sand production | |
| CN215312955U (en) | Vertical shaft type sand making machine with variable filter aperture | |
| CN221086367U (en) | Sand stone system sieving mechanism of processing | |
| CN219280355U (en) | Pulp divides sieve equipment for paper pulp emulsification | |
| CN217190797U (en) | High-efficient screening sand device of hydraulic engineering | |
| CN218078879U (en) | Grit sieving mechanism | |
| CN221245956U (en) | Sand screening device for building construction | |
| CN213527695U (en) | Filter capable of preventing filter screen from being blocked |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240201 Address after: No. 74, Yanjie, Gouxi Village, Wenyang Town, Feicheng City, Tai'an City, Shandong Province, 271000 Patentee after: Shandong Hongjing Construction Engineering Co.,Ltd. Country or region after: China Address before: 056006 No.1517, East Street, Tuntou Village, Development Zone, Handan County, Handan City, Hebei Province Patentee before: Song Shaotong Country or region before: China |