CN111013731A - Grit breaker for construction - Google Patents
Grit breaker for construction Download PDFInfo
- Publication number
- CN111013731A CN111013731A CN201911410697.9A CN201911410697A CN111013731A CN 111013731 A CN111013731 A CN 111013731A CN 201911410697 A CN201911410697 A CN 201911410697A CN 111013731 A CN111013731 A CN 111013731A
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- CN
- China
- Prior art keywords
- crushing
- conveyor belt
- frame
- rack
- spiral blade
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
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- 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
- B07B1/10—Screens in the form of endless moving bands
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a sand and stone crushing device for building construction, which comprises a rack and a crushing assembly arranged on the rack, wherein a dovetail slide block is arranged at the bottom of the crushing assembly and is in sliding connection with a dovetail sliding groove formed in the rack; still be provided with screening plant in the frame and with the feeding device of screening plant UNICOM setting, screening plant is located broken subassembly below, feeding device sets up on the lateral wall of frame. The invention adopts the feed hopper with the feed door, thereby preventing dust and impurities from falling in and preventing the environment from being polluted by the dust generated during crushing the sand stone; the crushing assembly with the adjusting assembly is adopted, so that different sand crushing requirements can be met, and the flexibility is strong; adopt first conveyer belt and the second conveyer belt that has different sieve meshes, cooperate first spiral leaf and second spiral leaf, with the great screening of granule, the circulation is broken, strengthens crushing effect, guarantees the homogeneity of grit granule.
Description
Technical Field
The invention relates to a crushing device, in particular to a sand stone crushing device for building construction.
Background
Sandstone, which refers to a loose mixture of sand and gravel, is the most common material used in construction. The grit can not satisfy the construction requirement because its particle size is inhomogeneous, needs to use breaker to carry out the breakage to it, and current breaker carries out broken back to the grit, needs the manual work to pour into breaker again the grit that does not satisfy broken demand into and carries out the breakage, and intensity of labour is big, and work efficiency is low.
Disclosure of Invention
The invention aims to provide a sand crushing device for building construction, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a gravel crushing device for building construction comprises a rack and a crushing assembly arranged on the rack, wherein a dovetail slide block is arranged at the bottom of the crushing assembly and is in sliding connection with a dovetail slide groove formed in the rack, and a feed hopper is arranged above the crushing assembly; still be provided with screening plant in the frame and with the feeding device of screening plant UNICOM setting, screening plant is located broken subassembly below, feeding device sets up on the lateral wall of frame.
As a further scheme of the invention: the top of the frame is also provided with a feeding door, the bottom of the frame is also provided with a discharging plate, the discharging plate is obliquely arranged below the screening device, and the lower end of the discharging plate corresponds to the discharging door arranged on the side wall of the frame.
As a further scheme of the invention: the crushing assembly comprises a crushing arc plate, a crushing roller and a crushing motor, the crushing motor is fixedly arranged on the rack, an output shaft of the crushing motor is fixedly connected with the crushing roller, the crushing roller is rotatably arranged on the rack, two groups of crushing arc plates are arranged on the periphery of the crushing roller, the crushing arc plates are in sliding connection with the rack through dovetail slide blocks arranged at the bottoms of the crushing arc plates, and an adjusting assembly is further arranged at one end, close to the crushing motor, of each crushing arc plate.
As a further scheme of the invention: the adjusting component comprises a crushing rack, crushing connecting rods and crushing gears, the number of the crushing connecting rods is two, the crushing connecting rods are respectively connected to the two groups of the crushing arc plates in a rotating mode through round rods, one ends, far away from the crushing arc plates, of the crushing connecting rods are rotatably connected with stepped shafts, the stepped shafts are fixedly provided with the crushing gears, and the crushing gears are fixedly arranged on the crushing rack in the rack in an meshed mode.
As a further scheme of the invention: the feeding device comprises a first spiral blade and a second spiral blade, the first spiral blade and the second spiral blade are respectively rotatably arranged on two sides of the rack, feed ends of the first spiral blade and the second spiral blade are respectively communicated with a discharge end of the screening device, and the bottoms of the first spiral blade and the second spiral blade are respectively fixedly connected with a first feeding motor and a second feeding motor.
As a further scheme of the invention: the screening device comprises a first conveyor belt and a second conveyor belt, the first conveyor belt and the second conveyor belt are respectively rotatably arranged on the rack, the second conveyor belt is positioned below the first conveyor belt, the first conveyor belt and the second conveyor belt are respectively provided with sieve holes, the pore size of the sieve holes in the first conveyor belt is larger than that of the sieve holes in the second conveyor belt, the feed end of the first conveyor belt corresponds to the crushing assembly, the discharge end of the first conveyor belt is communicated with the feed end of the first spiral blade, the feed end of the second conveyor belt corresponds to the sieve holes in the first conveyor belt, and the discharge end of the second conveyor belt is communicated with the feed end of the second spiral blade; and the first conveying belt and the second conveying belt are respectively provided with a first conveying motor and a second conveying motor which are respectively and fixedly arranged on two sides of the rack.
As a further scheme of the invention: the frame is also internally provided with a material conveying plate and is positioned below the first conveyor belt.
Compared with the prior art, the invention has the beneficial effects that:
the feeding hopper with the feeding door is adopted, so that feeding is facilitated to the inside of the feeding hopper, dust and impurities are prevented from falling into the feeding hopper, and the environment is prevented from being polluted by dust generated during crushing of sand stones; the crushing assembly with the adjusting assembly is adopted, and the gear rack is utilized to adjust the size of the gap between the crushing arc plate and the crushing roller, so that different sand crushing requirements can be met, and the flexibility is strong; screening the crushed sandstone by adopting a first conveyor belt and a second conveyor belt with different sieve pores, screening out larger particles, and ensuring the uniformity of the sandstone particles; the first spiral blade and the second spiral blade are matched with a screening device, so that the sand which does not meet the requirements is circularly crushed, the crushing effect is enhanced, and the crushing efficiency is ensured; adopt out the flitch and defeated flitch, guide the grit to corresponding position, be favorable to screening and the ejection of compact, the practicality is strong, and work efficiency is high.
Drawings
FIG. 1 is a schematic structural diagram of a sand crushing device for building construction.
Fig. 2 is a schematic structural diagram of a crushing assembly in the sand crushing device for building construction.
Fig. 3 is a side view of the crushing assembly in the sand crushing device for building construction.
FIG. 4 is a schematic structural diagram of a second conveyor belt in the sand crushing device for building construction.
Description of reference numerals:
1-a frame; 11-a feed hopper; 12-a feed gate; 13-a discharge door; 14-a discharge plate; 15-conveying plate; 2-a crushing assembly; 21-crushing the rack; 22-a crushing link; 23-breaking arc plates; 24-a crushing roller; 25-a crushing motor; 26-a crushing gear; 3-first helical leaf; 31-a first material conveying motor; 4-a first conveyor belt; 41-a first transport motor; 5-a second conveyor belt; 51-a second conveyor motor; 6-second helical leaf; 61-second conveying motor.
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.
Example 1
Referring to fig. 1 to 4, in the embodiment of the invention, a sand and stone crushing device for building construction comprises a frame 1 and a crushing assembly 2 installed on the frame 1, wherein a dovetail slide block is arranged at the bottom of the crushing assembly 2 and is in sliding connection with a dovetail slide groove formed in the frame 1, a feed hopper 11 is arranged above the crushing assembly 2, and materials are fed into the crushing assembly 2 through the feed hopper 11; still be provided with screening plant in the frame 1 and with the feeding device of screening plant UNICOM setting, screening plant is located broken subassembly 2 below for select broken incomplete grit, feeding device sets up on the lateral wall of frame 1 for in carrying feeder hopper 11 with the unsatisfactory grit that screening plant sieved, through broken subassembly 2 breakage once more, the circulation is failed, and breakage is many times, reinforcing crushing effect.
The top of the frame 1 is also provided with a feeding door 12 for opening and closing the feeding hopper 11, so that feeding is facilitated to the inside of the feeding hopper 11, dust and impurities are prevented from falling into the feeding hopper, and the environment is prevented from being polluted by dust generated during crushing of sand and stone; the bottom of the rack 1 is also provided with a discharge plate 14, the discharge plate 14 is obliquely arranged below the screening device, the lower end of the discharge plate is corresponding to a discharge door 13 arranged on the side wall of the rack 1, and sand screened by the screening device is conveyed to the discharge door 13 through the discharge plate 14 and is discharged out of the rack 1 through the discharge door 13.
The crushing assembly 2 comprises a crushing arc plate 23, a crushing roller 24 and a crushing motor 25, the crushing motor 25 is fixedly arranged on the frame 1, an output shaft of the crushing motor is fixedly connected with the crushing roller 24, the crushing roller 24 is rotatably arranged on the frame 1, two groups of crushing arc plates 23 are arranged on the periphery of the crushing roller, the crushing arc plates 23 are slidably connected with the frame 1 through dovetail sliders arranged at the bottom of the crushing arc plates 23, an adjusting assembly is further arranged at one end, close to the crushing motor 25, of each crushing arc plate 23, and the gap between each crushing arc plate 23 and the corresponding crushing roller 24 can be adjusted through the adjusting assembly, so that the size of crushed particles is controlled.
The adjusting assembly comprises two groups of crushing racks 21, two groups of crushing connecting rods 22 and two groups of crushing gears 26, the two groups of crushing connecting rods 22 are respectively connected to the two groups of crushing arc plates 23 through round rods in a rotating mode, one end, far away from the two groups of crushing arc plates 23, of each crushing connecting rod 22 is connected with a stepped shaft in a rotating mode, the crushing gears 26 are fixedly arranged on the stepped shafts, and the crushing gears 26 are meshed with the crushing racks 21 fixedly arranged on the rack 1; the crushing gear 26 is rotated, the crushing gear 26 reciprocates on the crushing rack 21, so that the crushing arc plate 23 is driven by the crushing connecting rod 22 to slide on the frame 1 in a transverse reciprocating manner, and the size of the gap between the crushing arc plate 23 and the crushing roller 24 is adjusted.
The feeding device comprises a first spiral blade 3 and a second spiral blade 6, the first spiral blade 3 and the second spiral blade 6 are respectively rotatably arranged on two sides of the frame 1, the feeding ends of the first spiral blade 3 and the second spiral blade 6 are respectively communicated with the discharging end of the screening device, and the bottoms of the first spiral blade 3 and the second spiral blade 6 are respectively and fixedly connected with a first feeding motor 31 and a second feeding motor 61.
The screening device comprises a first conveyor belt 4 and a second conveyor belt 5, the first conveyor belt 4 and the second conveyor belt 5 are respectively rotatably arranged on the rack 1, the second conveyor belt 5 is positioned below the first conveyor belt 4, both the first conveyor belt 4 and the second conveyor belt 5 are provided with screen holes, the aperture of the screen hole on the first conveyor belt 4 is larger than that of the screen hole on the second conveyor belt 5, the feeding end of the first conveyor belt 4 corresponds to the crushing component 2, the discharging end of the first conveyor belt is communicated with the feeding end of the first spiral blade 3, the feeding end of the second conveyor belt 5 corresponds to the screen hole on the first conveyor belt 4, and the discharging end of the second conveyor belt 5 is communicated with the feeding end of the second spiral blade 6; the first conveyor belt 4 and the second conveyor belt 5 are also respectively provided with a first conveyor motor 41 and a second conveyor motor 51, and the first conveyor motor 41 and the second conveyor motor 51 are respectively fixedly installed at two sides of the rack 1; start first transmission motor 41 and second conveying motor 51, first conveying motor 41 drives first conveyer belt 4 and rotates, and the grit that will be greater than the last aperture of sieve of first conveyer belt 4 is carried in first spiral leaf 3, and is broken once more through the broken subassembly 2 of the 3 conveyer belts of first spiral leaf, and the grit that is less than the last aperture of sieve of first conveyer belt 4 falls on second conveyer belt 5, second conveying motor 51 drives second conveyer belt 5 and rotates, and the grit that will be greater than the last aperture of sieve of second conveyer belt 5 is carried in second spiral leaf 6, and is broken once more through the broken subassembly 2 of 6 conveyer belts of second spiral leaf, and the grit that is less than the last aperture of sieve of second conveyer belt 5 falls on ejection of compact board 14 and discharges frame 1 from ejection of compact board 14.
Example 2
Referring to fig. 1, in an embodiment of the present invention, in order to ensure the screening quality of the second conveyor belt 5, on the basis of embodiment 1, a material conveying plate 15 is further disposed in the frame 1 and located below the first conveyor belt 4, and is configured to guide sand screened by the first conveyor belt 4 to a feed end of the second conveyor belt 5, so that the sand sufficiently contacts with and screens the screen holes on the second conveyor belt 5, and the sand screened by the first conveyor belt 4 is effectively prevented from directly entering the second spiral vane 6 from a discharge end of the second conveyor belt 5.
The working principle of the invention is as follows:
when the crusher works, the feeding door 12 is opened, the material is fed into the crushing component 2 through the feeding hopper 11, and the feeding door 12 is closed; starting a crushing motor 25, wherein the crushing motor 25 drives a crushing roller 24 to rotate and is matched with a crushing arc plate 23 to crush gravel, and the crushed gravel falls on the first conveyor belt 4; starting a first conveying motor 41 and a second conveying motor 51, wherein the first conveying motor 41 drives a first conveying belt 4 to rotate, sand larger than the aperture of the sieve holes in the first conveying belt 4 is conveyed into a first spiral blade 3, sand smaller than the aperture of the sieve holes in the first conveying belt 4 falls onto a second conveying belt 5, the second conveying motor 51 drives the second conveying belt 5 to rotate, sand larger than the aperture of the sieve holes in the second conveying belt 5 is conveyed into a second spiral blade 6, sand smaller than the aperture of the sieve holes in the second conveying belt 5 falls onto a discharge plate 14 and is discharged out of the rack 1 from the discharge plate 14; the first material conveying motor 31 and the second material conveying motor 61 are started, the first material conveying motor 31 and the second material conveying motor 61 respectively drive the first spiral blade 3 and the second spiral blade 6 to rotate, and sand which does not meet the requirements is conveyed to the crushing assembly 2 to be crushed again.
When the size of the sand particles does not meet the requirement, the crushing gear 26 is rotated, the crushing gear 26 reciprocates on the crushing rack 21, so that the crushing connecting rod 22 drives the crushing arc plate 23 to slide on the rack 1 in a transverse reciprocating manner, and the size of the gap between the crushing arc plate 23 and the crushing roller 24 is adjusted to meet the actual crushing requirement.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A gravel crushing device for building construction comprises a rack (1) and a crushing assembly (2) installed on the rack (1), and is characterized in that a dovetail slide block is arranged at the bottom of the crushing assembly (2) and is in sliding connection with a dovetail slide groove formed in the rack (1), and a feed hopper (11) is arranged above the crushing assembly (2); still be provided with screening plant in frame (1) and the feeding device who sets up with screening plant UNICOM, screening plant is located broken subassembly (2) below, feeding device sets up on the lateral wall of frame (1).
2. Gravel crushing device for building construction according to claim 1, characterized in that the top of the frame (1) is further provided with a feeding gate (12), the bottom of the frame (1) is further provided with a discharging plate (14), the discharging plate (14) is obliquely arranged below the screening device and the lower end of the discharging plate corresponds to a discharging gate (13) arranged on the side wall of the frame (1).
3. Gravel crushing device for building construction according to claim 2, characterized in that the crushing component (2) comprises a crushing arc plate (23), a crushing roller (24) and a crushing motor (25), the crushing motor (25) is fixedly arranged on the frame (1) and the output shaft thereof is fixedly connected with the crushing roller (24), the crushing roller (24) is rotatably arranged on the frame (1) and two groups of crushing arc plates (23) are arranged at the periphery thereof, the crushing arc plates (23) are slidably connected with the frame (1) through dovetail sliders arranged at the bottom thereof, and an adjusting component is further arranged at one end of each crushing arc plate (23) close to the crushing motor (25).
4. The gravel crushing device for building construction according to claim 3, wherein the adjusting component comprises crushing racks (21), crushing connecting rods (22) and crushing gears (26), the number of the crushing connecting rods (22) is two, the crushing connecting rods are respectively connected to the two groups of the crushing arc plates (23) in a rotating mode through round rods, one ends, far away from the crushing arc plates (23), of the crushing connecting rods (22) are rotatably connected with stepped shafts, crushing gears (26) are fixedly arranged on the stepped shafts, and the crushing gears (26) are meshed with the crushing racks (21) fixedly arranged on the rack (1).
5. The gravel crushing device for building construction as claimed in claim 1, wherein the material conveying device comprises a first spiral blade (3) and a second spiral blade (6), the first spiral blade (3) and the second spiral blade (6) are respectively and rotatably arranged at two sides of the frame (1), the feeding ends of the first spiral blade (3) and the second spiral blade (6) are respectively communicated with the discharging end of the screening device, and the bottoms of the first spiral blade (3) and the second spiral blade (6) are respectively and fixedly connected with a first material conveying motor (31) and a second material conveying motor (61).
6. Sand crushing device for building construction according to claim 5, wherein the screening device comprises a first conveyor belt (4) and a second conveyor belt (5), the first conveyor belt (4) and the second conveyor belt (5) are respectively and rotatably arranged on the rack (1) and the second conveyor belt (5) is positioned below the first conveyor belt (4), the first conveyor belt (4) and the second conveyor belt (5) are both provided with sieve pores, the pore diameter of the sieve pores on the first conveyor belt (4) is larger than that of the sieve pores on the second conveyor belt (5), the feeding end of the first conveyor belt (4) corresponds to the crushing assembly (2) and the discharging end of the first conveyor belt is communicated with the feeding end of the first spiral blade (3), the feeding end of the second conveyor belt (5) corresponds to the sieve holes on the first conveyor belt (4) and the discharging end of the second conveyor belt is communicated with the feeding end of the second spiral blade (6); the first conveyor belt (4) and the second conveyor belt (5) are further provided with a first conveyor motor (41) and a second conveyor motor (51) respectively, and the first conveyor motor (41) and the second conveyor motor (51) are fixedly installed on two sides of the rack (1) respectively.
7. Gravel crushing device for building construction according to claim 6, characterised in that a material conveying plate (15) is also arranged in the machine frame (1) and is located below the first conveyor belt (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410697.9A CN111013731A (en) | 2019-12-31 | 2019-12-31 | Grit breaker for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911410697.9A CN111013731A (en) | 2019-12-31 | 2019-12-31 | Grit breaker for construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111013731A true CN111013731A (en) | 2020-04-17 |
Family
ID=70201108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911410697.9A Withdrawn CN111013731A (en) | 2019-12-31 | 2019-12-31 | Grit breaker for construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111013731A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112024076A (en) * | 2020-08-13 | 2020-12-04 | 张磊 | Stone crushing and screening device for engineering construction based on Internet of things |
| CN112169969A (en) * | 2020-08-06 | 2021-01-05 | 宁化县腾丰香料厂 | Double-layer type crushing device for production of biomass pellet fuel raw materials |
| CN112570074A (en) * | 2020-10-21 | 2021-03-30 | 张轩 | Special coal conveying mechanical equipment based on layered discharging assembly |
| CN112756054A (en) * | 2020-12-25 | 2021-05-07 | 河南开成再生资源研究开发利用有限公司 | Large particle recycling device and method for producing sand |
| CN113399043A (en) * | 2021-07-19 | 2021-09-17 | 成都鸿吉盛建筑工程有限公司 | Automatic classification processing system of building rubbish |
-
2019
- 2019-12-31 CN CN201911410697.9A patent/CN111013731A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112169969A (en) * | 2020-08-06 | 2021-01-05 | 宁化县腾丰香料厂 | Double-layer type crushing device for production of biomass pellet fuel raw materials |
| CN112169969B (en) * | 2020-08-06 | 2021-10-22 | 宁化县腾丰香料厂 | Double-layer type crushing device for production of biomass pellet fuel raw materials |
| CN112024076A (en) * | 2020-08-13 | 2020-12-04 | 张磊 | Stone crushing and screening device for engineering construction based on Internet of things |
| CN112570074A (en) * | 2020-10-21 | 2021-03-30 | 张轩 | Special coal conveying mechanical equipment based on layered discharging assembly |
| CN112756054A (en) * | 2020-12-25 | 2021-05-07 | 河南开成再生资源研究开发利用有限公司 | Large particle recycling device and method for producing sand |
| CN113399043A (en) * | 2021-07-19 | 2021-09-17 | 成都鸿吉盛建筑工程有限公司 | Automatic classification processing system of building rubbish |
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Application publication date: 20200417 |