CN108889432A - A kind of uniform sand making machine of particle - Google Patents
A kind of uniform sand making machine of particle Download PDFInfo
- Publication number
- CN108889432A CN108889432A CN201810934276.5A CN201810934276A CN108889432A CN 108889432 A CN108889432 A CN 108889432A CN 201810934276 A CN201810934276 A CN 201810934276A CN 108889432 A CN108889432 A CN 108889432A
- Authority
- CN
- China
- Prior art keywords
- particle
- particle roller
- roller
- motor
- rotary shaft
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- 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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- 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
- B02C4/34—Adjusting, applying pressure to, or controlling the distance between, milling members in mills wherein a roller co-operates 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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of uniform sand making machines of particle, including the first particle mechanism, second particle mechanism, transmission mechanism, elevating mechanism and pedestal, first particle mechanism includes the first broken box, first motor and the first rotary shaft, second particle mechanism includes the second broken box, outer particle roller and interior particle roller, the transmission mechanism includes transmission case, second motor, second rotary shaft, bearing and belt pulley, the elevating mechanism includes hydraulic cylinder and telescopic mast, the hydraulic cylinder and telescopic mast respectively there are two, the pedestal is arranged below elevating mechanism, the present invention can carry out uniform particle to sandstone material.
Description
Technical field
The present invention relates to sand technical field processed, specifically a kind of uniform sand making machine of particle.
Background technique
Sand making machine is to be specifically used to produce building sand, highway sand；As third generation sand making machine and the 5th generation sand
Machine etc. belongs to sand making machine；In addition, sand making machine and crushing plant and sieve conveying equipment can form sand production line processed and
The sand flow journey processed such as sandstone production line；Various rocks, sandstone, cobble can be made the building for meeting various granularities in sand making machine
With sand, manufactured chiltern epigranular, compressive resistance are high, more accord with more than natural sand, common hammer sand shaker sand produced
Building requirements are closed, construction quality can be more improved；The equipment has reliable performance, design is reasonable, easy to operate, working efficiency is high etc.
Various features, however, sand making machine particle in the prior art is not enough uniformly to expire with the development of China's building industry
The demand of sufficient modern architecture industry, therefore, designing a kind of uniform sand making machine of particle is particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of uniform sand making machines of particle, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the present invention provides the following technical solutions：
A kind of uniform sand making machine of particle, including the first particle mechanism, the second particle mechanism, transmission mechanism, elevating mechanism and bottom
Seat, first particle mechanism include the first broken box, first motor and the first rotary shaft, and second particle mechanism includes the
Two broken boxes, outer particle roller and interior particle roller, the transmission mechanism include transmission case, the second motor, the second rotary shaft, bearing and
Belt pulley, the elevating mechanism include hydraulic cylinder and telescopic mast, the hydraulic cylinder and telescopic mast respectively there are two, the pedestal is set
It sets below elevating mechanism.
As a further solution of the present invention：First broken box upper surface is provided with feed opening, and the first broken box is right
Side-wall outer side is fixedly installed first motor placing box, and the first motor placing box is internally provided with first motor, and described
The motor shaft of one motor is fixedly connected with the first rotary shaft by shaft coupling, and first rotary shaft is arranged in the first broken box
Portion is provided with multiple broken knives in the first rotary shaft, the first rotary shaft high speed rotation is driven by first motor, so that broken knife
The sandstone material entered from feed opening is tentatively crushed, first broken box bottom is additionally provided with blanking pipe.
As a further solution of the present invention：The outer particle roller be it is hollow round table-like, in the upper surface of outer particle roller
Diameter is greater than the lower surface internal diameter of outer particle roller, and the upper surface internal diameter of outer particle roller is equal with the internal diameter of blanking pipe, outer particle roller
Upper surface outer diameter it is equal with the outer diameter of blanking pipe, the concentric fixation in lower surface of the upper surface and blanking pipe of outer particle roller
Connection, the interior particle roller be it is solid round table-like, interior particle roller upper surface diameter is greater than interior particle roller lower surface diameter, interior broken
Expect that roller upper surface diameter is greater than the lower surface internal diameter of outer particle roller, interior particle roller upper surface diameter is less than the upper surface of outer particle roller
Internal diameter, the interior particle roller are arranged inside outer particle roller, there are gap between interior particle roller and outer particle roller, on interior particle roller
Surface is additionally provided with cone, and the effect of the cone is so that falling on interior particle under the sandstone material fallen from blanking pipe
In gap between roller and outer particle roller.
As a further solution of the present invention：The interior particle roller lower surface is additionally provided with support shaft, the outer particle roller
Lateral wall middle position is fixedly connected with the second broken box upper surface, and second broken box lower surface is provided with transmission case, institute
It states transmission case inner tip and is provided with support plate, the center position of support plate is provided with bearing, and the support shaft is inserted through
The lower surface of two broken boxes extends to below support plate, and support shaft outer surface middle position is fixedly connected with bearing inner race, supports
Axis bottom is additionally provided with belt pulley.
As a further solution of the present invention：The second motor placing box is additionally provided on the first broken box left side wall,
The second motor is fixedly connected with inside the second motor placing box, the motor shaft of second motor is fixedly connected by shaft coupling
Second rotary shaft, second rotary shaft bottom are provided with belt pulley, the belt pulley of second rotary shaft bottom and the branch
It supports and is sequentially connected between the belt pulley of axis bottom by belt, second rotary shaft is that multiple hollow stem fittings form, in this way
The purpose of design is so that the second rotary shaft has retractility, and the support plate lower surface left and right sides is provided with telescopic mast,
The telescopic mast bottom end is fixedly connected with the output shaft of hydraulic cylinder, and the hydraulic cylinder is fixedly mounted on pedestal, telescopic mast and
The effect of hydraulic cylinder is so that interior particle roller can move up and down inside outer particle roller, thus particle roller and outer particle in changing
Gap between roller achievees the purpose that the particle partial size for changing sandstone material.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of uniform sand making machine of particle of the present invention, including the first particle mechanism, the second particle mechanism, transmission mechanism, elevator
Structure and pedestal, first particle mechanism include the first broken box, first motor and the first rotary shaft, second particle mechanism
Including the second broken box, outer particle roller and interior particle roller, the transmission mechanism include transmission case, the second motor, the second rotary shaft,
Bearing and belt pulley, the elevating mechanism include hydraulic cylinder and telescopic mast, drive the first rotary shaft high speed to revolve by first motor
Turn, so that broken knife tentatively crushes the sandstone material entered from feed opening；Preliminary smashed sandstone material passes through
Blanking pipe is fallen in the gap between interior particle roller and outer particle roller, by interior particle roller and outer particle roller to sandstone material
Frictional force effect further crushed to realize, the crushing of this step can uniformly crush sandstone material so that
The partial size of sandstone material is more evenly to meet the needs of modern architecture industry；In addition, the design of elevating mechanism is so that interior particle
Roller can move up and down inside outer particle roller, so that the gap in changing between particle roller and outer particle roller, reaches change sand
The purpose of the particle partial size of stone material.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of transmission mechanism in the present invention.
Fig. 3 is the structural schematic diagram of interior particle roller and outer particle roller in the present invention.
In figure：1- feed opening, 2- first motor placing box, the second motor of 3- placing box, the second motor of 4-, the first electricity of 5-
The outer particle roller of machine, the first rotary shaft of 6-, the broken knife of 7-, the first broken box of 8-, 9- blanking pipe, the second rotary shaft of 10-, 11-, 12-
Interior particle roller, the second broken box of 13-, 14- discharge port, 15- support shaft, 16- belt pulley, 17- belt, 18- support plate, 19- axis
It holds, 20- telescopic mast, 21- transmission case, 22- pedestal, 23- hydraulic cylinder.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of uniform sand making machine of particle, including the first particle mechanism,
Two particle mechanisms, transmission mechanism, elevating mechanism and pedestal 22, first particle mechanism include the first broken box 8, first motor
5 and first rotary shaft 6, second particle mechanism include the second broken box 13, outer particle roller 11 and interior particle roller 12, the biography
Motivation structure includes that transmission case 21, the second motor 4, the second rotary shaft 10, bearing 19 and belt pulley 16, the elevating mechanism include liquid
Cylinder pressure 23 and telescopic mast 20, the hydraulic cylinder 23 and telescopic mast 20 respectively there are two, the pedestal 22 is arranged under elevating mechanism
Side.
In the embodiment of the present invention, 8 upper surface of the first broken box is provided with feed opening 1,8 right side wall of the first broken box
Outside is fixedly installed first motor placing box 2, and the first motor placing box 2 is internally provided with first motor 5, and described first
The motor shaft of motor 5 is fixedly connected with the first rotary shaft 6 by shaft coupling, and first rotary shaft 6 is arranged in the first broken box 8
Portion is provided with multiple broken knives 7 in the first rotary shaft 6, drives 6 high speed rotation of the first rotary shaft by first motor 5, so that
Broken knife 7 tentatively crushes the sandstone material entered from feed opening 1, and 8 bottom of the first broken box is additionally provided with feeder pipe
Road 9.
In the embodiment of the present invention, the outer particle roller 11 be it is hollow round table-like, the upper surface internal diameter of outer particle roller 11 is big
It is equal with the internal diameter of blanking pipe 9 in the upper surface internal diameter of the lower surface internal diameter of outer particle roller 11, outer particle roller 11, outer particle roller
11 upper surface outer diameter is equal with the outer diameter of blanking pipe 9, and the upper surface of outer particle roller 11 and the lower surface of blanking pipe 9 are coaxial
The heart is fixedly connected, the interior particle roller 12 be it is solid round table-like, interior 12 upper surface diameter of particle roller is greater than under interior particle roller 12
Surface diameter, interior 12 upper surface diameter of particle roller are greater than the lower surface internal diameter of outer particle roller 11, interior 12 upper surface diameter of particle roller
Less than the upper surface internal diameter of outer particle roller 11, the interior particle roller 12 is arranged inside outer particle roller 11, interior particle roller 12 and outer
There are gap between particle roller 11, interior 12 upper surface of particle roller is additionally provided with cone, the effect of the cone be so that from
It is fallen under the sandstone material that blanking pipe 9 is fallen in the gap between interior particle roller 12 and outer particle roller 11.
In the embodiment of the present invention, interior 12 lower surface of particle roller is additionally provided with support shaft 15, outside the outer particle roller 11
Side wall middle position is fixedly connected with 13 upper surface of the second broken box, and 13 lower surface of the second broken box is provided with transmission case
21,21 inner tip of transmission case is provided with support plate 18, and 18 center of support plate is provided with bearing 19, the branch
The lower surface that support axis 15 is inserted through the second broken box 13 extends to 18 lower section of support plate, 15 outer surface middle position of support shaft and axis
It holds 19 inner rings to be fixedly connected, 15 bottom of support shaft is additionally provided with belt pulley 16.
In the embodiment of the present invention, it is additionally provided with the second motor placing box 3 on 8 left side wall of the first broken box, described
The second motor 4 is fixedly connected with inside two motor placing boxes 3, the motor shaft of second motor 4 is fixedly connected with by shaft coupling
Two rotary shafts 10,10 bottom of the second rotary shaft are provided with belt pulley 16, the belt pulley 16 of 10 bottom of the second rotary shaft
It is sequentially connected between the belt pulley 16 of 15 bottom of support shaft by belt 17, second rotary shaft 10 is multiple hollow
Rod set is closed, and the purpose designed in this way is so that the second rotary shaft 10 has retractility, described 18 lower surface of support plate or so
Two sides are provided with telescopic mast 20, and 20 bottom end of telescopic mast is fixedly connected with the output shaft of hydraulic cylinder 23, the hydraulic cylinder
23 are fixedly mounted on pedestal 22, and the effect of telescopic mast 20 and hydraulic cylinder 23 is so that interior particle roller 12 is inside outer particle roller 11
It can move up and down, so that the gap in changing between particle roller 12 and outer particle roller 11, reaches the particle for changing sandstone material
The purpose of partial size.
It should be further noted that specific workflow of the invention is：Firstly, sandstone material is added from feed opening 1
Entering into the first broken box 8, starts first motor 5 and the second motor 4, first motor 5 drives 6 high speed rotation of the first rotary shaft,
So that broken knife 7 tentatively crushes the sandstone material entered from feed opening 1, under preliminary smashed sandstone material passes through
Pipe material 9 is fallen in the gap between interior particle roller 12 and outer particle roller 11, and the second motor 4 transmission at this time drives interior particle roller
12 rotations, sandstone material are acted on by the frictional force of interior particle roller 12 and outer particle roller 11 to which realization further crushes, meanwhile,
The effect of telescopic mast 20 and hydraulic cylinder 23 is so that interior particle roller 12 can move up and down inside outer particle roller 11, to change
Gap between interior particle roller 12 and outer particle roller 11 achievees the purpose that the particle partial size for changing sandstone material.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of uniform sand making machine of particle, including the first particle mechanism, the second particle mechanism, transmission mechanism, elevating mechanism and
Pedestal (22), which is characterized in that first particle mechanism includes the first broken box (8), first motor (5) and the first rotary shaft
(6), second particle mechanism includes the second broken box (13), outer particle roller (11) and interior particle roller (12), the driver
Structure includes transmission case (21), the second motor (4), the second rotary shaft (10), bearing (19) and belt pulley (16), the elevating mechanism
Including hydraulic cylinder (23) and telescopic mast (20), the hydraulic cylinder (23) and telescopic mast (20) respectively there are two, the pedestal (22)
It is arranged below elevating mechanism.
2. the uniform sand making machine of particle according to claim 1, which is characterized in that the first broken box (8) upper surface
It is provided with feed opening (1), is fixedly installed first motor placing box (2) on the outside of the first broken box (8) right side wall, described first
Motor placing box (2) is internally provided with first motor (5), and the motor shaft of the first motor (5) is fixedly connected by shaft coupling
First rotary shaft (6), the first rotary shaft (6) setting is internal in the first broken box (8), and the first rotary shaft is provided on (6)
Multiple broken knives (7), the first broken box (8) bottom are additionally provided with blanking pipe (9).
3. the uniform sand making machine of particle according to claim 1, which is characterized in that the outer particle roller (11) is hollow
Round table-like, the upper surface internal diameter of outer particle roller (11) is greater than the lower surface internal diameter of outer particle roller (11), outer particle roller (11) it is upper
Surface internal diameter is equal with the internal diameter of blanking pipe (9), the outer diameter phase of the upper surface outer diameter and blanking pipe (9) of outer particle roller (11)
Deng, the upper surface of outer particle roller (11) with the lower surface of blanking pipe (9) is concentric is fixedly connected, the interior particle roller (12) is
Solid is round table-like, and interior particle roller (12) upper surface diameter is greater than interior particle roller (12) lower surface diameter, on interior particle roller (12)
Surface diameter is greater than the lower surface internal diameter of outer particle roller (11), and interior particle roller (12) upper surface diameter is less than outer particle roller (11)
Upper surface internal diameter, interior particle roller (12) setting is internal in outer particle roller (11), interior particle roller (12) and outer particle roller (11)
Between there are gap, interior particle roller (12) upper surface is additionally provided with cone.
4. the uniform sand making machine of particle according to claim 3, which is characterized in that interior particle roller (12) lower surface is also
It is provided with support shaft (15), the fixed company in outer particle roller (11) the lateral wall middle position and the second broken box (13) upper surface
It connects, the second broken box (13) lower surface is provided with transmission case (21), and transmission case (21) inner tip is provided with support
Plate (18), support plate (18) center are provided with bearing (19), and the support shaft (15) is inserted through the second broken box
(13) lower surface extends to below support plate (18), support shaft (15) outer surface middle position and the fixed company of bearing (19) inner ring
It connects, support shaft (15) bottom is additionally provided with belt pulley (16).
5. the uniform sand making machine of particle according to claim 2, which is characterized in that the first broken box (8) left side wall
On be additionally provided with the second motor placing box (3), is fixedly connected the second motor (4) inside the second motor placing box (3), it is described
The motor shaft of second motor (4) is fixedly connected the second rotary shaft (10) by shaft coupling, and the second rotary shaft (10) bottom is set
It is equipped with belt pulley (16), the belt pulley (16) of the second rotary shaft (10) bottom and the belt pulley of the support shaft (15) bottom
(16) it is sequentially connected between by belt (17).
6. the uniform sand making machine of particle according to claim 5, which is characterized in that second rotary shaft (10) is multiple
Hollow stem fitting forms.
7. the uniform sand making machine of particle according to claim 4, which is characterized in that described support plate (18) lower surface or so
Two sides are provided with telescopic mast (20), and telescopic mast (20) bottom end is fixedly connected with the output shaft of hydraulic cylinder (23), described
Hydraulic cylinder (23) is fixedly mounted on pedestal (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934276.5A CN108889432A (en) | 2018-08-16 | 2018-08-16 | A kind of uniform sand making machine of particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934276.5A CN108889432A (en) | 2018-08-16 | 2018-08-16 | A kind of uniform sand making machine of particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108889432A true CN108889432A (en) | 2018-11-27 |
Family
ID=64354694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934276.5A Withdrawn CN108889432A (en) | 2018-08-16 | 2018-08-16 | A kind of uniform sand making machine of particle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108889432A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369102A (en) * | 2019-08-10 | 2019-10-25 | 枣庄鑫金山智能机械股份有限公司 | A kind of sand making machine using converter technique |
| CN111450974A (en) * | 2020-04-14 | 2020-07-28 | 郭汉云 | Chinese-medicinal material grinder |
| CN112138833A (en) * | 2020-08-27 | 2020-12-29 | 枣庄鑫金山智能装备有限公司 | Sand making machine with adjustable gravel |
| CN114130495A (en) * | 2021-10-26 | 2022-03-04 | 枣庄市瑞隆机械制造有限公司 | Two-stage crushing sand making machine |
-
2018
- 2018-08-16 CN CN201810934276.5A patent/CN108889432A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369102A (en) * | 2019-08-10 | 2019-10-25 | 枣庄鑫金山智能机械股份有限公司 | A kind of sand making machine using converter technique |
| CN111450974A (en) * | 2020-04-14 | 2020-07-28 | 郭汉云 | Chinese-medicinal material grinder |
| CN111450974B (en) * | 2020-04-14 | 2021-09-07 | 隋丽华 | Chinese-medicinal material grinder |
| CN112138833A (en) * | 2020-08-27 | 2020-12-29 | 枣庄鑫金山智能装备有限公司 | Sand making machine with adjustable gravel |
| CN114130495A (en) * | 2021-10-26 | 2022-03-04 | 枣庄市瑞隆机械制造有限公司 | Two-stage crushing sand making machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181127 |