CN217512006U - Preparation concrete's machine-made sand preliminary treatment equipment - Google Patents
Preparation concrete's machine-made sand preliminary treatment equipment Download PDFInfo
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- CN217512006U CN217512006U CN202221003068.1U CN202221003068U CN217512006U CN 217512006 U CN217512006 U CN 217512006U CN 202221003068 U CN202221003068 U CN 202221003068U CN 217512006 U CN217512006 U CN 217512006U
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Abstract
A machine-made sand pretreatment device for preparing concrete comprises a first screening device, a second screening device, a first crushing device, a second crushing device and a dust removal device; the first screening device is used for screening the entering raw sand to obtain sand stones with the particle size of less than 4.75 mm; the second screening device is connected with the first screening device and is used for secondarily screening the entering raw sand with the particle size of more than 4.75mm to obtain sand with the particle size of 4.75-10 mm; the first crushing device is connected with the second screening device and is used for crushing and screening the sandstone with the particle size of 4.75-10 mm; the second crushing device is connected with the second screening device and is used for crushing and screening the gravels with the particle size of more than 10 mm; the dust removal device is respectively connected with the first screening device, the second screening device, the first crushing device and the second crushing device; this application is mutually supported through each device, carries out different processing to the grit of the different particle diameters of former sand to obtain the mechanism sand that needs the requirement, improve the concrete quality of follow-up preparation.
Description
Technical Field
The utility model belongs to machine-made sand preparation field, concretely relates to machine-made sand pre treatment device of preparation concrete.
Background
Along with the rapid development of the building industry, the demand of concrete is more and more large, the consumption of sand is continuously increased as the main raw material of the concrete, the sand commonly used in the current building engineering is natural sand which is naturally formed and has low price and convenient material taking, but the natural sand is a non-renewable resource, along with the development of regional economy and the increase of the demand of ecological environment construction, the natural sand resource is in shortage and faces the situation of supply shortage, excessive exploitation can seriously damage the ecological environment, the occurrence of the machine-made sand concrete effectively solves the problem, the rock, mine tailings or industrial waste residue particles which are made by mechanical crushing and screening are used for replacing the natural sand as fine aggregate, the novel green building material is formed, the problem of insufficient supply of the natural sand can be solved, and the utilization of solid waste resources is improved, has obvious environmental protection and economic and social comprehensive benefits, thereby being widely applied.
The machine-made sand is sand processed by a sand making machine and other accessory equipment, a machine-made sand production line is formed by combining equipment such as a vibrating feeder, a jaw crusher, the sand making machine, a vibrating screen, a rubber belt conveyor and the like, and the equipment of various models is combined according to different process requirements to meet different process requirements of customers, wherein the sand making machine is related to sand forming rate, sand shape, grading and fineness modulus and is a key technology in the machine-made sand production process, and the traditional sand making machine has the following problems in the sand making process: (1) the machine-made sand is formed by crushing a sand making machine, so compared with natural river sand, the machine-made sand has multiple edges and corners and rough surface, and the characteristics of the particles determine that the machine-made sand concrete has obvious difference with river sand concrete, so that the inferior machine-made sand has more sand grains, more needle sheets, more edges and corners, rough surface, high stone powder content, poorer particle gradation, poor workability of the prepared concrete, increased water demand ratio, easy generation of the appearance quality defect of the concrete and reduced strength of the concrete; (2) because the prior sand making machine directly throws the raw materials containing sand grains which can be directly used as finished sand into the sand making machine for sand making operation without screening the raw materials before the sand making operation is carried out on the raw materials, the finished sand can be secondarily made, so that the content of stone powder contained in the machine-made sand is higher, the trouble is brought to the subsequent sand washing operation of a sand washing machine, the kinetic energy loss of the sand making machine is increased, and the sand making efficiency of the sand making machine is reduced; there is a need for further improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's shortcoming, providing a mechanism sand pre treatment facility of preparation concrete.
The utility model adopts the following technical scheme:
a machine-made sand pretreatment device for preparing concrete comprises a first screening device, a second screening device, a first crushing device, a second crushing device and a dust removal device;
the first screening device is used for screening the entering raw sand to obtain sand stones with the particle size of less than 4.75 mm;
the second screening device is connected with the first screening device and is used for secondarily screening the entering raw sand with the particle size of more than 4.75mm to obtain sandstone with the particle size of 4.75-10 mm;
the first crushing device is connected with the second screening device and is used for crushing and screening the sandstone with the particle size of 4.75-10 mm;
the second crushing device is connected with the second screening device and is used for crushing and screening the gravels with the particle size of more than 10 mm;
and the dust removal device is respectively connected with the first screening device, the second screening device, the first crushing device and the second crushing device, and is used for recycling dust generated in the working process of each device.
Furthermore, the first crushing device comprises a first crushing shell, a first crushing assembly, a first crushing material inlet, a first fine powder screen and a first crushing material outlet, wherein a first crushing cavity is formed in the first crushing shell, the first crushing assembly is rotatably arranged in the first crushing cavity, the first crushing material inlet is formed in the top of the first crushing shell and is communicated with the first crushing cavity, the first fine powder screen is obliquely arranged in the first crushing cavity and is positioned below the first crushing assembly, and the first crushing material outlet is formed in the first crushing shell and is opposite to the lower end of the first fine powder screen.
Furthermore, the first crushing device further comprises a first buffer hopper arranged in the first crushing cavity, the first buffer hopper is arranged between the first crushing assembly and the first fine powder screen, and a first discharge hole opposite to the upper end of the first fine powder screen is formed in the first buffer hopper.
Furthermore, the first crushing assembly comprises two first crushing rollers which are arranged in the first crushing cavity at intervals in parallel and two first driving motors which are arranged outside the first crushing shell and are respectively connected with and drive the two first crushing rollers to rotate, the first crushing rollers are provided with a plurality of first crushing cutter sets which are arranged at intervals along the length direction of the first crushing rollers, and each first crushing cutter set comprises a plurality of first crushing cutters which are distributed circumferentially.
Furthermore, the second crushing device comprises a second crushing shell, a second crushing assembly, a second crushing material inlet, a third crushing assembly, a second fine powder screen and a second crushed material outlet, wherein a second crushing cavity is formed inside the second crushing shell, the second crushing assembly is rotatably arranged in the second crushing cavity, the second crushed material inlet is formed in the top of the second crushing shell and is communicated with the second crushing cavity, the third crushing assembly is arranged in the second crushing cavity and is positioned below the second crushing assembly, the second fine powder screen is obliquely arranged in the second crushing cavity and is positioned below the third crushing assembly, and the second crushed material outlet is formed in the second crushing shell and is opposite to the lower end of the second fine powder screen.
Furthermore, the second crushing device further comprises a second buffer hopper arranged between the second crushing assembly and the third crushing assembly and a third buffer hopper arranged between the third crushing assembly and the second fine powder screen, a second discharge port opposite to the third crushing assembly is formed on the second buffer hopper, and a third discharge port opposite to the upper end of the second fine powder screen is formed on the third buffer hopper.
Furthermore, the second crushing assembly comprises two second crushing rollers which are arranged in the second crushing cavity at intervals in parallel and two second driving motors which are arranged outside the second crushing shell and are respectively connected with and drive the two second crushing rollers to rotate, the second crushing rollers are provided with a plurality of second crushing cutter sets which are arranged at intervals along the length direction of the second crushing rollers, and each second crushing cutter set comprises a plurality of second crushing cutters which are distributed circumferentially.
Furthermore, the third crushing assembly comprises two third crushing rollers which are arranged in the second crushing cavity at intervals in parallel and two third driving motors which are arranged outside the second crushing shell and are respectively connected with and drive the two third crushing rollers to rotate, the third crushing rollers are provided with a plurality of third crushing cutter sets which are arranged at intervals along the length direction of the third crushing rollers, each third crushing cutter set comprises a plurality of third crushing cutters which are distributed circumferentially, and the third crushing rollers are vertically opposite to the second crushing rollers.
Further, first screening plant includes first screening casing, slope setting at the inside first vibratory screen of first screening casing, sets up and connects and drive the first vibrating motor of first vibratory screen vibration on first screening casing, sets up the first feeding section that supplies former sand to get into and sets up the first ejection of compact section relative with first vibratory screen lower extreme on first screening casing.
Furthermore, the second screening device comprises a second screening shell, a second vibrating screen obliquely arranged inside the second screening shell, a second vibrating motor arranged on the second screening shell and used for connecting and driving the second vibrating screen to vibrate, a second feeding section arranged on the second screening shell and used for raw sand with the particle size larger than 4.75mm to enter, and a second discharging section arranged on the second screening shell and opposite to the lower end of the second vibrating screen.
It can be known from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the device is matched with each other, and the sand stones with different particle sizes in the raw sand are treated differently to obtain the machine-made sand required, so that the quality of the subsequently prepared concrete is improved; meanwhile, the screen is arranged in the first crushing device and the second crushing device, and crushed raw sand can be screened, so that machine-made sand meeting the particle size requirement is obtained, and sand and stones which do not meet the particle size requirement are returned to the first crushing device or the second crushing device again for crushing and utilization.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a first crushing device;
FIG. 3 is a schematic view of a second crushing device;
in the figure, 1-a first screening device, 2-a second screening device, 3-a first crushing device, 4-a second crushing device, 5-a dust removing device, 6-a storage bin, 11-a first screening shell, 12-a first vibrating screen, 13-a first vibrating motor, 14-a first feeding section, 15-a first discharging section, 16-a first feeding surface, 21-a second screening shell, 22-a second vibrating screen, 23-a second vibrating motor, 24-a second feeding section, 25-a second discharging section, 26-a third discharging section, 27-a second feeding surface, 31-a first crushing shell, 311-a first crushing cavity, 32-a first crushing component, 321-a first crushing roller, 322-a first driving motor, 323-a first crushing cutter group, 324-a first crushing knife, 33-a first crushing material inlet, 34-a first fine powder screen, 35-a first crushing material outlet, 36-a first motor, 37-a first buffer hopper, 371-a first discharge outlet, 41-a second crushing shell, 411-a second crushing cavity, 42-a second crushing component, 421-a second crushing roller, 422-a second driving motor, 423-a second crushing knife group, 424-a second crushing knife, 43-a second crushing material inlet, 44-a third crushing component, 441-a third crushing roller, 442-a third driving motor, 443-a third crushing knife group, 444-a third crushing knife, 45-a second fine powder screen, 46-a second motor, 47-a second crushing material outlet, 48-a second buffer hopper, 481-second discharge port, 49-third buffer hopper and 491-third discharge port.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Referring to fig. 1 to 3, a pretreatment apparatus for preparing concrete includes a first screening device 1, a second screening device 2, a first crushing device 3, a second crushing device 4, a dust removing device 5, a storage bin 6, a first finished product bin 7, and a second finished product bin 8.
The first screening device 1 is used for screening the entered raw sand to obtain sand and stones with the particle size of less than 4.75mm, and comprises a first screening shell 11, a first vibrating screen 12 obliquely arranged in the first screening shell 11, a first vibrating motor 13 arranged on the first screening shell 11 and connected with and driving the first vibrating screen 12 to vibrate, a first feeding section 14 arranged on the first screening shell 11 for the raw sand to enter, and a first discharging section 15 arranged on the first screening shell 11 and opposite to the lower end of the first vibrating screen 12; specifically, the first feeding section 14 is arranged at the side of the first screening shell 11, and is formed with a first feeding surface 16 parallel to the first vibrating screen 12, so as to guide the raw sand to fall onto the first vibrating screen 12 for screening; when the vibrating screen works, raw sand falls onto the first vibrating screen 12 through the first feeding section 14, the first vibrating screen 12 drives the raw sand to move in the direction close to the first discharging section 15 under the action of the first vibrating motor 13, and then, sand and stones with the particle size smaller than 4.75mm fall below the first vibrating screen 12 under the action of the first vibrating screen 12; the raw sand with the grain diameter larger than 4.75mm flows out through the first discharging section 15.
The second screening device 2 is connected with the first discharging section 15 and is used for carrying out secondary screening on the entering raw sand with the particle size larger than 4.75mm so as to obtain sand with the particle size between 4.75 and 10 mm; the screening device comprises a second screening shell 21, a second vibrating screen 22 obliquely arranged in the second screening shell 21, a second vibrating motor 23 which is arranged on the second screening shell 21 and connected with the second vibrating screen 22 and drives the second vibrating screen 22 to vibrate, a second feeding section 24 which is arranged on the second screening shell 21 and used for raw sand with the particle size larger than 4.75mm to enter, a second discharging section 25 which is arranged on the second screening shell 21 and is opposite to the lower end of the second vibrating screen 22, and a third discharging section 26 which is arranged at the bottom of the second screening shell 21; specifically, the second feeding section 24 is arranged at the side of the second screening housing 21, and is formed with a second feeding surface 27 parallel to the second vibrating screen 22, so as to guide the entering raw sand to fall onto the second vibrating screen 22 for screening; when the vibrating screen works, raw sand larger than 4.75mm falls onto the second vibrating screen 22 through the second feeding section 24, the raw sand is driven to move in the direction close to the second discharging section 25 on the second vibrating screen 22 under the action of the second vibrating motor 23, and then sand and stones with the particle size of 4.75-10mm fall below the second vibrating screen 33 under the action of the second vibrating screen 22; the raw sand with the grain diameter larger than 10mm flows out through the second discharging section 25.
The first crushing device 3 is connected with the third discharging section 26, is used for crushing and screening sand and stones with the particle size of 4.75-10mm, and comprises a first crushing shell 31, a first crushing assembly 32, a first crushed material inlet 33, a first fine powder screen 34, a first crushed material outlet 35, a first motor 36 and a first buffer hopper 37, wherein the first crushing shell 31 is internally provided with a first crushing cavity 311, the first crushing assembly 32 is rotatably arranged in the first crushing cavity 311, the first crushed material inlet 33 is arranged at the top of the first crushing shell 31 and is communicated with the first crushing cavity 311, the first fine powder screen 34 is obliquely arranged in the first crushing cavity 311 and is positioned below the first crushing assembly 32, the first crushed material outlet 35 is arranged on the first crushing shell 31 and is opposite to the lower end of the first fine powder screen 34, the first motor 36 is arranged on the outer side of the first crushing shell 31 and is connected with the first crushed material inlet 33 and is connected with the third discharging section 26; specifically, the first buffer hopper 37 is arranged between the first crushing assembly 32 and the first fine powder screen 34, and a first discharge hole 371 opposite to the upper end of the first fine powder screen 34 is arranged on the first buffer hopper 37, so that the crushed raw sand is prevented from directly falling and impacting the first fine powder screen 34, and meanwhile, the crushed raw sand can fall on the upper end of the first fine powder screen 34 under the guidance of the first buffer hopper 37, so that the sieving precision of the first fine powder screen 34 is improved, and the quality of the prepared concrete is ensured; the first fine powder screen 34 is arranged below the first crushing assembly 32, and crushed raw sand is screened to obtain machine-made sand with the particle size of less than 4.75mm, and the machine-made sand is used for preparing subsequent concrete, so that the working performance of the concrete is improved; and the sand with the grain diameter larger than 4.75mm returns to the first crushed material inlet 33 through the first crushed material outlet 35 for crushing and utilizing again.
The first crushing assembly 32 includes two first crushing rollers 321 disposed in the first crushing cavity 311 in parallel and spaced apart, and two first driving motors 322 disposed outside the first crushing shell 31 and respectively connected to and driving the two first crushing rollers 321 to rotate, the first crushing rollers 321 are provided with a plurality of first crushing cutter groups 323 arranged at intervals along a length direction thereof, and the first crushing cutter groups 323 include a plurality of first crushing cutters 324 distributed circumferentially.
A second crushing device 4 connected with the second discharging section 25 for crushing and screening the gravels with the particle size larger than 10mm, which comprises a second crushing shell 41 with a second crushing cavity 411 formed inside, a second crushing component 42 rotatably arranged in the second crushing cavity 411, a second crushing material inlet 43 arranged at the top of the second crushing shell 41 and communicated with the second crushing cavity 411, a third crushing component 44 arranged in the second crushing cavity 411 and below the second crushing component 42, a second fine powder screen 45 obliquely arranged in the second crushing cavity 411 and below the third crushing component 44, a second motor 46 arranged outside the second crushing shell 41 and connected with and driving the second fine powder screen 45 to vibrate, a second crushing material outlet 47 arranged on the second crushing shell 41 and opposite to the lower end of the second fine powder screen 45, a second buffer hopper 48 arranged between the second crushing component 42 and the third crushing component 44, and a second buffer hopper 48 arranged between the third crushing component 44 and the second fine powder screen 45 A third buffer hopper 49; specifically, the second crushed material inlet 43 is connected with the second discharging section 25; a second discharge port 481 opposite to the third crushing assembly 44 is formed on the second buffer hopper 48, and a third discharge port 491 opposite to the upper end of the second fine powder screen 45 is formed on the third buffer hopper 49; the second buffer hopper 48 is arranged to regulate and guide the raw sand crushed by the second crushing assembly 42 to fall to the third crushing assembly 44; the third buffer hopper 49 is arranged to prevent the raw sand crushed by the third crushing assembly 44 from directly falling and impacting the second fine powder screen 45, and the crushed raw sand can fall on the upper end of the second fine powder screen 45 under the guidance of the third buffer hopper 49, so that the screening precision of the second fine powder screen 45 is improved, and the quality of the prepared concrete is ensured; a first fine powder screen 45 is arranged below the third crushing component 44, and crushed raw sand is screened to obtain machine-made sand with the particle size of less than 4.75mm for subsequent concrete preparation, so that the working performance of concrete is improved; the sand with the grain diameter larger than 4.75mm returns to the second crushed material inlet 43 through the second crushed material outlet 47 for crushing and utilizing again.
The second crushing assembly 42 includes two second crushing rollers 421 disposed in the second crushing cavity 411 in parallel at intervals and two second driving motors 422 disposed outside the second crushing shell 41 and respectively connected to and driving the two second crushing rollers 421 to rotate, the second crushing rollers 421 are provided with a plurality of second crushing cutter sets 423 arranged at intervals along the length direction thereof, and the second crushing cutter sets 423 include a plurality of second crushing cutters 424 distributed circumferentially.
The third crushing assembly 44 includes two third crushing rollers 441 disposed in parallel and at intervals in the second crushing cavity 411, and two third driving motors 442 disposed outside the second crushing shell 41 and respectively connected to and driving the two third crushing rollers 441 to rotate, the third crushing roller 441 is provided with a plurality of third crushing cutter sets 443 arranged at intervals along the length direction thereof, and the third crushing cutter sets 443 include a plurality of third crushing cutters 444 circumferentially distributed; specifically, the third crushing roller 441 is vertically opposite to the second crushing roller 421, and through the cooperation of the second crushing assembly 42 and the third crushing assembly 44, the raw sand with the particle size larger than 10mm is crushed to obtain the sand with the required particle size.
The dust removal device 5 is respectively connected with the first screening device 1, the second screening device 2, the first crushing device 3 and the second crushing device 4, and is used for recycling dust generated in the engineering process of each device; specifically, the dust removing device 5 is a bag-type dust remover commonly used in the field of dust removal, and the specific structure and the working principle thereof are not further described herein.
The storage bin 6 is connected with the bottoms of the first screening device 1, the first crushing device 3 and the second crushing device 4, and sand and stones with the particle size of less than 4.75mm obtained by screening the first screening device 1, the first crushing device 3 and the second crushing device 4 are stored for preparing subsequent concrete.
The matching mode between the screen and the motor is a mechanism commonly used in the vibration screening equipment, and the specific connection mode and the working raw materials are further described.
The device has the advantages that through mutual matching of the devices, different treatments are carried out on the sand stones with different particle sizes of the raw sand, so that the machine-made sand required by the requirements can be obtained, and the quality of the concrete prepared subsequently can be improved; meanwhile, the screens are arranged in the first crushing device 3 and the second crushing device 4, and the crushed raw sand can be screened, so that the machine-made sand meeting the particle size requirement is obtained, and the sand which does not meet the particle size requirement is returned to the first crushing device 3 or the second crushing device 4 again for crushing and utilization.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (10)
1. The utility model provides a preparation concrete's machine-made sand preliminary treatment equipment which characterized in that: the device comprises a first screening device, a second screening device, a first crushing device, a second crushing device and a dust removal device;
the first screening device is used for screening the entering raw sand to obtain sand stones with the particle size of less than 4.75 mm;
the second screening device is connected with the first screening device and is used for secondarily screening the entering raw sand with the particle size of more than 4.75mm to obtain sand with the particle size of 4.75-10 mm;
the first crushing device is connected with the second screening device and is used for crushing and screening the sandstone with the particle size of 4.75-10 mm;
the second crushing device is connected with the second screening device and is used for crushing and screening the gravels with the particle size of more than 10 mm;
and the dust removal device is respectively connected with the first screening device, the second screening device, the first crushing device and the second crushing device, and is used for recycling dust generated in the working process of each device.
2. The machine-made sand pretreatment apparatus for preparing concrete according to claim 1, wherein: the first crushing device comprises a first crushing shell, a first crushing assembly, a first crushing material inlet, a first fine powder screen and a first crushing material outlet, wherein a first crushing cavity is formed in the first crushing shell, the first crushing assembly is rotatably arranged in the first crushing cavity, the first crushing material inlet is formed in the top of the first crushing shell and is communicated with the first crushing cavity, the first fine powder screen is obliquely arranged in the first crushing cavity and is positioned below the first crushing assembly, and the first crushing material outlet is formed in the first crushing shell and is opposite to the lower end of the first fine powder screen.
3. The machine-made sand pretreatment apparatus for preparing concrete according to claim 2, wherein: the first crushing device further comprises a first buffer hopper arranged in the first crushing cavity, the first buffer hopper is arranged between the first crushing assembly and the first fine powder screen, and a first discharge hole opposite to the upper end of the first fine powder screen is formed in the first buffer hopper.
4. The machine-made sand pretreatment apparatus for preparing concrete according to claim 2, wherein: first broken subassembly includes that parallel interval sets up two relative first crushing rollers in first broken chamber and sets up and connect respectively and drive two first driving motor of two first crushing roller pivoted outside first broken casing, and first crushing roller is provided with a plurality of first broken knife tackle of its length direction interval arrangement, and first broken knife tackle includes a plurality of first broken swoves of circumference distribution.
5. The machine-made sand pretreatment apparatus for preparing concrete according to claim 1, wherein: the second crushing device comprises a second crushing shell, a second crushing assembly, a second crushing material inlet, a third crushing assembly, a second fine powder screen and a second crushing material outlet, wherein a second crushing cavity is formed in the second crushing shell, the second crushing assembly is rotatably arranged in the second crushing cavity, the second crushing material inlet is formed in the top of the second crushing shell and is communicated with the second crushing cavity, the third crushing assembly is arranged in the second crushing cavity and is positioned below the second crushing assembly, the second fine powder screen is obliquely arranged in the second crushing cavity and is positioned below the third crushing assembly, and the second crushing material outlet is formed in the second crushing shell and is opposite to the lower end of the second fine powder screen.
6. The machine-made sand pretreatment apparatus for preparing concrete according to claim 4, wherein: the second crushing device further comprises a second buffer hopper arranged between the second crushing assembly and the third crushing assembly and a third buffer hopper arranged between the third crushing assembly and the second fine powder screen, a second discharge hole opposite to the third crushing assembly is formed in the second buffer hopper, and a third discharge hole opposite to the upper end of the second fine powder screen is formed in the third buffer hopper.
7. The machine-made sand pretreatment apparatus for preparing concrete according to claim 4, wherein: the second crushing assembly comprises two second crushing rollers which are arranged in a second crushing cavity at intervals in parallel and two second driving motors which are arranged outside a second crushing shell and are respectively connected with and drive the two second crushing rollers to rotate, the second crushing rollers are provided with a plurality of second crushing cutter sets which are arranged at intervals along the length direction of the second crushing rollers, and each second crushing cutter set comprises a plurality of second crushing cutters which are distributed circumferentially.
8. The machine-made sand pretreatment apparatus for preparing concrete according to claim 4, wherein: the third crushing assembly comprises two third crushing rollers which are arranged in the second crushing cavity at intervals in parallel and two third driving motors which are arranged outside the second crushing shell and are respectively connected with and drive the two third crushing rollers to rotate, the third crushing rollers are provided with a plurality of third crushing cutter sets which are arranged at intervals along the length direction of the third crushing rollers, each third crushing cutter set comprises a plurality of third crushing cutters which are distributed circumferentially, and the third crushing rollers are vertically opposite to the second crushing rollers.
9. The machine-made sand pretreatment apparatus for preparing concrete according to claim 1, wherein: first screening plant includes first screening casing, slope setting at the inside vibrating screen of first screening casing, sets up and connects and drive the first vibrating motor of the vibration of first vibrating screen on first screening casing, sets up the first feeding section that supplies former sand to get into and sets up the first ejection of compact section relative with first vibrating screen lower extreme on first screening casing.
10. The machine-made sand pretreatment apparatus for preparing concrete according to claim 1, wherein: the second screening device comprises a second screening shell, a second vibrating screen arranged in the second screening shell in an inclined mode, a second vibrating motor arranged on the second screening shell and used for connecting and driving the second vibrating screen to vibrate, a second feeding section arranged on the second screening shell and used for enabling raw sand with the particle size larger than 4.75mm to enter and a second discharging section arranged on the second screening shell and opposite to the lower end of the second vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221003068.1U CN217512006U (en) | 2022-04-24 | 2022-04-24 | Preparation concrete's machine-made sand preliminary treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221003068.1U CN217512006U (en) | 2022-04-24 | 2022-04-24 | Preparation concrete's machine-made sand preliminary treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217512006U true CN217512006U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221003068.1U Active CN217512006U (en) | 2022-04-24 | 2022-04-24 | Preparation concrete's machine-made sand preliminary treatment equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN217512006U (en) |
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2022
- 2022-04-24 CN CN202221003068.1U patent/CN217512006U/en active Active
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