CN112090740A - Building site is with quick screening gravel and sand equipment - Google Patents
Building site is with quick screening gravel and sand equipment Download PDFInfo
- Publication number
- CN112090740A CN112090740A CN202010842498.1A CN202010842498A CN112090740A CN 112090740 A CN112090740 A CN 112090740A CN 202010842498 A CN202010842498 A CN 202010842498A CN 112090740 A CN112090740 A CN 112090740A
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- China
- Prior art keywords
- bottom plate
- screening
- rotating shaft
- supporting
- sand
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
- B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/02—Belt- or chain-engaging elements
- B65G23/04—Drums, rollers, or wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to screening equipment, in particular to rapid sand and stone screening equipment for a construction site. The invention aims to provide the rapid sand and stone screening equipment for the construction site, which has good screening effect and higher efficiency and can reduce the working strength of people. A building site is with quick screening gravel and sand equipment, including: the support is symmetrically and fixedly connected to one side of the top of the bottom plate; the servo motor is arranged on one side, close to the support, of the top of the bottom plate; the feeding assembly is arranged on one side, close to the support, of the top of the bottom plate. The invention achieves the effects of good screening effect, higher efficiency and reduction of working strength of people, the left part of the rotating rod is driven by the sliding rod to continuously move up and down, so that the right side of the rotating rod, the connecting block and the screen frame are driven to continuously shake, and the shaking frequency of the screen frame is improved under the action of the metal balls in the sleeve, so that the screening effect is greatly improved.
Description
Technical Field
The invention relates to screening equipment, in particular to rapid sand and stone screening equipment for a construction site.
Background
The sand and stone are loose mixtures of fine sand and broken stones, the sand and stone are loose objects, but the particle hardness of the sand and stone is large, the sand and stone are stable in chemical properties under the surface environment, people often use the fine sand in a construction site, and the fine sand and the broken stones need to be separated.
At present, people are when separating fine sand and rubble, often all people are manual to put gravel and sand on the screening frame, then people constantly rock the screening frame, make the fine sand on the screening frame drop automatically, later with unnecessary rubble get rid of again can, however there is certain problem in such screening mode, people manually rock the screening frame and can increase people's working strength, and make work efficiency greatly reduced, and the frequency of artifical rocking is less, can make the effect of screening not good.
Therefore, it is desirable to design a quick screening sand and stone device for building sites with good screening effect and high efficiency, which reduces the working strength of people.
Disclosure of Invention
In order to overcome the defects that the working strength is high and the screening effect is poor when people manually screen the sand and the stone in the prior art, the invention aims to provide the rapid sand and stone screening equipment for the building site, which has the advantages of good screening effect and high efficiency and can reduce the working strength of people.
The technical scheme is as follows: a building site is with quick screening gravel and sand equipment, including: the support is symmetrically and fixedly connected to one side of the top of the bottom plate; the servo motor is arranged on one side, close to the support, of the top of the bottom plate; the feeding assembly is arranged on one side, close to the support, of the top of the bottom plate and is connected with an output shaft of the servo motor; the screening subassembly, the screening subassembly sets up the bottom plate top is kept away from one side of support.
As an improvement of the scheme, the feeding assembly comprises: the first rotating shaft is rotatably arranged between the upper parts of the brackets at two sides; the first driving roller is welded on the first rotating shaft; the driving wheel is connected to one end of the first rotating shaft and an output shaft of the servo motor; the belt is wound on the transmission wheel; the supporting frames are symmetrically and fixedly connected to the middle of the top of the bottom plate; the second rotating shaft is rotatably arranged between the tops of the supporting frames at two sides; the second transmission roller is welded on the second rotating shaft; a conveyor belt wound around the second driving roller and the first driving roller; the feeding plates are uniformly connected to the outer side of the conveying belt at intervals, and the number of the feeding plates is at least 15.
As an improvement of the scheme, the screening component comprises: the first supporting rods are symmetrically and fixedly connected to the middle of the top of the bottom plate and are positioned on the inner side of the supporting frame; the frame body is connected between the upper parts of the first support rods on two sides through bolts; the first gear is symmetrically welded on the second rotating shaft; the upper parts of the support frames are respectively and rotatably provided with a third rotating shaft; the second gears are welded on the third rotating shafts and are meshed with the corresponding first gears; the grooved wheels are welded on the third rotating shaft and are positioned on the outer side of the second gear; the supporting sleeves are symmetrically arranged on the inner side of the frame body; the sliding rods are arranged in the supporting sleeves in a sliding mode, and the upper parts of the sliding rods are matched with the grooved wheels; the lower parts of the sliding rods are provided with the rotating rods in a sliding manner, and the middle parts of the rotating rods are rotatably connected with the frame body; the connecting blocks are symmetrically and slidably arranged on the outer side of the middle part of the frame body and are slidably connected with the rotating rod; the second supporting rods are symmetrically and fixedly connected to one side, far away from the support, of the top of the bottom plate; the screen frame is rotatably arranged between the upper parts of the second supporting rods, and two sides of the screen frame are connected with the connecting blocks; the guide frame is installed on one side of the top of the bottom plate and is located under the screen frame.
As an improvement of the above scheme, the method further comprises the following steps: the sleeves are arranged on two sides in the screen frame; the metal balls are arranged in the sleeves, and the number of the metal balls is at least four.
As an improvement of the above scheme, the method further comprises the following steps: and the baffle is connected between the upper parts of the support frames on the two sides.
The invention has the following advantages: 1. the invention achieves the effects of good screening effect, higher efficiency and reduced working strength of people;
2. the left part of the rotating rod is driven to move up and down continuously through the sliding rod, so that the right side of the rotating rod, the connecting block and the screen frame are driven to shake continuously, and the shaking frequency of the screen frame is improved under the action of the metal balls in the sleeve, so that the screening effect is greatly improved;
3. people only need constantly place gravel and sand on the conveyer belt, under the effect of first driving roller and second driving roller, can constantly transport gravel and sand to the screen cloth frame on.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
FIG. 3 is a schematic diagram of a first partial structure according to the present invention.
Fig. 4 is a second partial structure diagram and a cross-sectional view of the present invention.
Number designation in the figures: 1-bottom plate, 2-bracket, 3-servo motor, 4-feeding component, 401-first rotating shaft, 402-first driving roller, 403-driving wheel, 404-belt, 405-supporting frame, 406-second rotating shaft, 407-second driving roller, 408-conveying belt, 409-feeding plate, 5-screening component, 501-first supporting rod, 502-frame body, 503-first gear, 504-third rotating shaft, 505-second gear, 506-grooved wheel, 507-supporting sleeve, 508-sliding rod, 509-rotating rod, 510-connecting block, 511-second supporting rod, 512-screen frame, 513-guiding frame, 6-sleeve, 7-metal ball and 8-baffle.
Detailed Description
The following further describes the technical solution with reference to specific embodiments, and it should be noted that: the words upper, lower, left, right, and the like used herein to indicate orientation are merely for the location of the illustrated structure in the corresponding figures. The serial numbers of the parts are themselves numbered herein, for example: first, second, etc. are used solely to distinguish one from another as to objects described herein, and do not have any sequential or technical meaning. The application states that: the connection and coupling, unless otherwise indicated, include both direct and indirect connections (couplings).
Example 1
The utility model provides a building site is with quick screening gravel and sand equipment, as shown in fig. 1-3, including bottom plate 1, support 2, servo motor 3, feeding unit 4 and screening subassembly 5, symmetrical fixedly connected with support 2 around the left side of bottom plate 1 top, servo motor 3 is installed in bottom plate 1 top left side, servo motor 3 is located support 2 right side, 1 top left side of bottom plate is equipped with feeding unit 4, feeding unit 4 is connected with servo motor 3's output shaft, 1 top right side of bottom plate is equipped with screening subassembly 5.
The feeding assembly 4 comprises a first rotating shaft 401, a first driving roller 402, driving wheels 403, a belt 404, a support frame 405, a second rotating shaft 406, a second driving roller 407, a conveying belt 408 and a feeding plate 409, a first rotating shaft 401 is arranged between the upper portions of the supports 2 on the front side and the rear side in a rotating mode, the first rotating shaft 402 is welded on the first rotating shaft 401, the front end of the first rotating shaft 401 and the front end of an output shaft of the servo motor 3 are connected with the driving wheels 403, the belt 404 is wound between the two driving wheels 403, the support frame 405 is symmetrically and fixedly connected with the top of the bottom plate 1 in the middle of the top in the front and the rear direction, the second rotating shaft 406 is arranged between the tops of the support frames 405 on the two sides in a rotating mode, the second rotating shaft 406 is welded with the second driving roller 407, the conveying belt 408 is wound.
The screening component 5 comprises a first supporting rod 501, a frame body 502, a first gear 503, a third rotating shaft 504, a second gear 505, a grooved pulley 506, a supporting sleeve 507, a sliding rod 508, a rotating rod 509, a connecting block 510, a second supporting rod 511, a screen frame 512 and a material guiding frame 513, wherein the first supporting rod 501 is symmetrically and fixedly connected with the middle of the top of the bottom plate 1 in the front-back direction, the first supporting rod 501 is positioned at the inner side of the supporting frame 405, the frame body 502 is connected between the upper parts of the first supporting rods 501 at two sides through bolts, the first gear 503 is symmetrically welded on the second rotating shaft 406 in the front-back direction, the third rotating shaft 504 is rotatably arranged at the upper part of the supporting frame 405, the second gear 505 and the grooved pulley 506 are welded on the third rotating shaft 504, the grooved pulley 506 is positioned at the outer side of the second gear 505, the second gear 505 is in a special-shaped groove structure, the second gear 505 is engaged with the corresponding first gear 503, the, the upper portion of the sliding rod 508 is matched with a groove of the grooved pulley 506, the lower portion of the sliding rod 508 is provided with a rotating rod 509 in a sliding mode, the middle portion of the rotating rod 509 is rotatably connected with the frame body 502, connecting blocks 510 are symmetrically arranged in the front and back of the outer side of the middle portion of the frame body 502 in a sliding mode, the connecting blocks 510 are slidably connected with the right portion of the rotating rod 509 in a sliding mode, a second supporting rod 511 is fixedly connected in the front and back symmetrical mode on the right side of the top of the bottom plate 1, a screen frame 512 is arranged between the upper portion of the second supporting rod 511 in a rotating mode, the front and back sides of.
Can use this equipment when people need filter building site sand and stone fast, at first people start servo motor 3, then constantly put into the sand and stone on feeding unit 4, servo motor 3 drives feeding unit 4 function, make sand and stone constantly upwards transport to screening unit 5 on, then feeding unit 4 can drive screening unit 5 function, filter sand and stone, people only need collect the sand in the equipment front side, and from the equipment right side collect the stone can, close servo motor 3 at last.
When people need transport gravel and sand through pay-off subassembly 4, servo motor 3's output shaft can drive first pivot 401 through the transmission of drive wheel 403 and belt 404 and constantly rotate clockwise, thereby drive first drive roller 402 and constantly rotate clockwise, and drive conveyer belt 408, second drive roller 407 and the continuous clockwise rotation of second pivot 406, and then drive the continuous clockwise rotation of delivery sheet 409, people put gravel and sand on conveyer belt 408, can upwards transport gravel and sand to screening subassembly 5 through delivery sheet 409.
When people need to screen the gravel and sand through the screening component 5, the gravel and sand can drop on the screen frame 512, the clockwise rotation of the second rotating shaft 406 can drive the first gear 503 to continuously rotate clockwise, thereby driving the second gear 505, the continuous anticlockwise rotation of the third rotating shaft 504 and the grooved pulley 506, because the sliding rod 508 can continuously slide in the grooved pulley 506, the grooved pulley 506 rotates and can drive the sliding rod 508 to continuously move up and down, thereby driving the rotating rod 509 to continuously rotate, because the connecting block 510 can continuously slide in the rotating rod 509, the connecting block 510 can continuously move up and down, thereby driving the screen frame 512 to continuously rock, so that the fine sand in the gravel and sand can drop on the guide frame 513, and drop from the front side, and the gravel and sand with larger particles can not pass through the screen frame 512, and can drop from the right side of the screen frame 512.
Example 2
On the basis of the embodiment 1, as shown in fig. 1-2 and 4, the screen frame further comprises a sleeve 6 and three metal balls 7, wherein the sleeve 6 is mounted on the front side and the rear side of the screen frame 512, and the three metal balls 7 are arranged in the sleeve 6.
The device also comprises a baffle plate 8, and the baffle plate 8 is connected between the right sides of the upper parts of the supporting frames 405 on the two sides.
When constantly rocking, screen frame 512 can drive sleeve 6 and metal ball 7 constantly rock, and metal ball 7 constantly collides mutually in sleeve 6 for screen frame 512 can rock more acutely, makes the effect of screening better.
The sand and stones hitting the baffle 8 automatically fall down onto the screen frame 512, so that the sand and stones which should fall onto the screen frame 512 do not fall outside.
The present application is described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (5)
1. The utility model provides a building site is with quick screening gravel and sand equipment, characterized by, including:
the device comprises a bottom plate (1), wherein one side of the top of the bottom plate (1) is symmetrically and fixedly connected with a support (2);
the servo motor (3) is installed on one side, close to the support (2), of the top of the bottom plate (1);
the feeding assembly (4) is arranged on one side, close to the support (2), of the top of the bottom plate (1), and the feeding assembly (4) is connected with an output shaft of the servo motor (3);
screening subassembly (5), screening subassembly (5) set up bottom plate (1) top is kept away from one side of support (2).
2. The apparatus for screening sand and stone rapidly for construction site as set forth in claim 1, wherein the feed assembly (4) comprises:
the first rotating shaft (401), the first rotating shaft (401) is rotatably arranged between the upper parts of the brackets (2) at two sides;
a first drive roller (402), the first drive roller (402) being welded to the first shaft (401);
the transmission wheel (403), the transmission wheel (403) is connected to one end of the first rotating shaft (401) and the output shaft of the servo motor (3);
a belt (404), wherein the belt (404) is wound on the transmission wheel (403);
the supporting frames (405) are symmetrically and fixedly connected to the middle of the top of the bottom plate (1);
the second rotating shaft (406), the second rotating shaft (406) is rotatably arranged between the tops of the supporting frames (405) on two sides;
a second driving roller (407), the second driving roller (407) being welded to the second rotating shaft (406);
a conveyor belt (408), said conveyor belt (408) being wound around said second driving roller (407) and said first driving roller (402);
the feeding plates (409) are uniformly connected to the outer side of the conveyor belt (408) at intervals, and the number of the feeding plates (409) is at least 15.
3. A rapid screening sand and stone installation for construction sites as claimed in claim 2, characterized in that the screening unit (5) comprises:
the first supporting rods (501) are symmetrically and fixedly connected to the middle of the top of the bottom plate (1), and the first supporting rods (501) are located on the inner side of the supporting frame (405);
the frame body (502) is connected between the upper parts of the first supporting rods (501) on two sides through bolts;
the first gear (503) is symmetrically welded on the second rotating shaft (406);
the upper parts of the supporting frames (405) are respectively and rotatably provided with a third rotating shaft (504);
the second gears (505) are welded on the third rotating shafts (504), and the second gears (505) are meshed with the corresponding first gears (503);
the grooved wheels (506) are welded on the third rotating shaft (504), and the grooved wheels (506) are positioned outside the second gear (505);
the supporting sleeves (507), the supporting sleeves (507) are symmetrically arranged on the inner side of the frame body (502);
the sliding rods (508) are arranged in the supporting sleeves (507) in a sliding mode, and the upper portions of the sliding rods (508) are matched with the grooved wheels (506);
the lower parts of the sliding rods (508) are provided with the rotating rods (509) in a sliding mode, and the middle parts of the rotating rods (509) are rotatably connected with the frame body (502);
the connecting blocks (510) are symmetrically and slidably arranged on the outer side of the middle part of the frame body (502), and the connecting blocks (510) are slidably connected with the rotating rod (509);
the second supporting rods (511) are symmetrically and fixedly connected to one side, away from the support (2), of the top of the bottom plate (1);
the screen frame (512) is rotatably arranged between the upper parts of the second supporting rods (511), and two sides of the screen frame (512) are connected with the connecting blocks (510);
the material guiding frame (513) is installed on one side of the top of the bottom plate (1), and the material guiding frame (513) is located under the screen frame (512).
4. The apparatus for rapidly screening sand and stone for construction site as claimed in claim 3, further comprising:
the sleeves (6), the sleeves (6) are arranged on two sides in the screen frame (512);
the metal ball (7), all be equipped with metal ball (7) in sleeve (6), the quantity of metal ball (7) is four at least.
5. The apparatus for rapidly screening sand and stone for construction site as claimed in claim 4, further comprising:
the baffle (8), baffle (8) are connected between the support frame (405) upper portion of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842498.1A CN112090740A (en) | 2020-08-20 | 2020-08-20 | Building site is with quick screening gravel and sand equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842498.1A CN112090740A (en) | 2020-08-20 | 2020-08-20 | Building site is with quick screening gravel and sand equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112090740A true CN112090740A (en) | 2020-12-18 |
Family
ID=73754041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010842498.1A Withdrawn CN112090740A (en) | 2020-08-20 | 2020-08-20 | Building site is with quick screening gravel and sand equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112090740A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112845093A (en) * | 2021-01-21 | 2021-05-28 | 林有连 | Multistage screening installation of building aggregate for building |
| CN113786990A (en) * | 2021-09-15 | 2021-12-14 | 深圳众合创建设工程有限公司 | Sand and stone screening equipment for constructional engineering |
| CN114130640A (en) * | 2021-12-07 | 2022-03-04 | 邓笑和 | Building materials is with husky stone separator |
| CN114273215A (en) * | 2021-12-22 | 2022-04-05 | 蔡福荣 | Industrial sand and stone screening equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203816906U (en) * | 2014-04-30 | 2014-09-10 | 新东方油墨有限公司 | Ink particle screening device |
| CN109013308A (en) * | 2018-07-07 | 2018-12-18 | 安庆市茂祥农业科技发展有限公司 | A kind of screening filter device of Chinese prickly ash |
| WO2019104797A1 (en) * | 2017-12-01 | 2019-06-06 | 无锡市恒达矿山机械有限公司 | Sieving apparatus for crushed furnace coal |
| CN110192773A (en) * | 2019-05-30 | 2019-09-03 | 安徽皓浩食品科技股份有限公司 | A kind of soy bean milk making machine and its application method that screenings separation property is high |
| CN210253095U (en) * | 2019-07-25 | 2020-04-07 | 安徽美东生物材料有限公司 | Feed supplement jar is used in synthetic production of chemical industry |
| CN111069034A (en) * | 2020-01-09 | 2020-04-28 | 潘品鸿 | Sand and stone separator for building |
-
2020
- 2020-08-20 CN CN202010842498.1A patent/CN112090740A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203816906U (en) * | 2014-04-30 | 2014-09-10 | 新东方油墨有限公司 | Ink particle screening device |
| WO2019104797A1 (en) * | 2017-12-01 | 2019-06-06 | 无锡市恒达矿山机械有限公司 | Sieving apparatus for crushed furnace coal |
| CN109013308A (en) * | 2018-07-07 | 2018-12-18 | 安庆市茂祥农业科技发展有限公司 | A kind of screening filter device of Chinese prickly ash |
| CN110192773A (en) * | 2019-05-30 | 2019-09-03 | 安徽皓浩食品科技股份有限公司 | A kind of soy bean milk making machine and its application method that screenings separation property is high |
| CN210253095U (en) * | 2019-07-25 | 2020-04-07 | 安徽美东生物材料有限公司 | Feed supplement jar is used in synthetic production of chemical industry |
| CN111069034A (en) * | 2020-01-09 | 2020-04-28 | 潘品鸿 | Sand and stone separator for building |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112845093A (en) * | 2021-01-21 | 2021-05-28 | 林有连 | Multistage screening installation of building aggregate for building |
| CN113786990A (en) * | 2021-09-15 | 2021-12-14 | 深圳众合创建设工程有限公司 | Sand and stone screening equipment for constructional engineering |
| CN113786990B (en) * | 2021-09-15 | 2022-07-12 | 深圳众合创建设工程有限公司 | Sand and stone screening equipment for constructional engineering |
| CN114130640A (en) * | 2021-12-07 | 2022-03-04 | 邓笑和 | Building materials is with husky stone separator |
| CN114273215A (en) * | 2021-12-22 | 2022-04-05 | 蔡福荣 | Industrial sand and stone screening equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201218 |