CN110947490A - Safe crushing sand making machine for building stones - Google Patents

Safe crushing sand making machine for building stones Download PDF

Info

Publication number
CN110947490A
CN110947490A CN201911344906.4A CN201911344906A CN110947490A CN 110947490 A CN110947490 A CN 110947490A CN 201911344906 A CN201911344906 A CN 201911344906A CN 110947490 A CN110947490 A CN 110947490A
Authority
CN
China
Prior art keywords
crushing
box
pipe
water
making machine
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.)
Pending
Application number
CN201911344906.4A
Other languages
Chinese (zh)
Inventor
孙启祥
孙法虎
马驰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zaozhuang Snksan Intelligent Machinery Co Ltd
Original Assignee
Zaozhuang Snksan Intelligent Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zaozhuang Snksan Intelligent Machinery Co Ltd filed Critical Zaozhuang Snksan Intelligent Machinery Co Ltd
Priority to CN201911344906.4A priority Critical patent/CN110947490A/en
Publication of CN110947490A publication Critical patent/CN110947490A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00Other disintegrating devices or methods
    • B02C19/18Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C19/186Use of cold or heat for disintegrating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary 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
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/02Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary 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
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165Screen denying egress of oversize material

Abstract

The invention discloses a building stone safe crushing sand making machine, which belongs to the field of building engineering and comprises a box body, wherein a feeding pipe is arranged at the top end of the box body, a baking box is arranged in the box body and communicated with the feeding pipe, an inclined guide plate is arranged at the bottom end in the baking box, a high-temperature heater is arranged on the inclined guide plate, a cold soaking box is arranged in the box body, the outlet end of the baking box is communicated with the cold soaking box through a transmission pipe, a water tank is arranged on the box body, a crushing chamber is arranged in the box body, a first sieve plate and a second sieve plate are obliquely arranged in the box body, a water guide plate is obliquely arranged at the bottom end of the box body, the lowest end of the. According to the invention, the stone is cracked by cooling after high-temperature heating, so that the stone is convenient to crush, the sand making effect and efficiency are improved, and the sand making machine is convenient to use. The water circulation is convenient, the waste of water resources is avoided, the resources are saved, and the use is convenient.

Description

Safe crushing sand making machine for building stones
Technical Field
The invention relates to the field of constructional engineering, in particular to a sand making machine for safely crushing building stones.
Background
Because of its good hardness and stable chemical properties, sandstone is often used as a high-quality building material and concrete raw material and is widely applied in the fields of houses, roads, highways, railways, engineering and the like. With the requirements of infrastructure construction technology and the development of high technology, higher requirements are made on the quantity and quality of sand. Sand is a loose material, but its particles are generally hard and chemically stable in the surface environment. Sandstone generally has stronger weather resistance, and particularly, siliconized quartz sandstone has hardness higher than granite. The sandstone is a basic material in national economic construction, is mainly used for basic engineering, concrete, mortar and corresponding products, and is an indispensable and irreplaceable aggregate material for building of basic facilities such as buildings, roads, railways, bridges, municipal engineering, hydraulic engineering, hydroelectric engineering, nuclear power station engineering, airports, wharfs and the like. At present, the cement concrete and the asphalt concrete are most widely applied in engineering construction, and the polymer concrete is less in use amount. Concrete is a composite material and sand is one of the major component materials in the largest proportion. In a concrete structure, the sand and stone mainly play a role of a skeleton, stabilize the volume of concrete, transfer stress, inhibit shrinkage and prevent cracking. Plays an extremely important role in building and infrastructure, namely, no sand, no concrete and no concrete building and foundation engineering. The sand making machine is an important device for producing building construction raw materials, and the sand making machine is a machine for crushing large rocks into fragments by using methods such as extrusion, splitting, bending, impacting, rolling and the like. During construction, a plurality of gravels, particularly concrete, are needed, and a large amount of gravels and gravels are needed.
The existing sand making machine cannot well work, has high difficulty in crushing the sand, and influences the effect and efficiency of sand preparation and use.
Disclosure of Invention
In view of the existing problems, the invention aims to provide a sand making machine for safely crushing building stones, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a broken system sand machine of building stones safety, the power distribution box comprises a box body, the box top be equipped with the inlet pipe, the inside case that toasts that is equipped with of box, toast incasement portion bottom and be equipped with the slope baffle, be equipped with high temperature heater on the slope baffle, the inside cold-leaching case that is equipped with of box, toast the case exit end and come the intercommunication through transmission pipe and cold-leaching case, be equipped with the water tank on the box, be equipped with the drinking-water pipe on the water tank, the drinking-water pipe exit end is equipped with spouts the dish, the inside crushing room that is equipped with of box, the exit end and the crushing room intercommunication of cold-leaching case, the inside two sets of crushing rollers that are equipped with of crushing roller, the crushing roller outer wall is equipped with broken tooth, the inside slope of box is equipped with first sieve.
As a further scheme of the invention: the spraying plate is arranged in the cold leaching tank, and a water suction pump is installed on a water suction pipe.
As a further scheme of the invention: the crushing rollers are arranged in an interlocking manner through crushing teeth.
As a further scheme of the invention: the first sieve plate lower extreme is equipped with first discharging pipe, and second sieve plate lower extreme is equipped with the second discharging pipe.
As a further scheme of the invention: the second sieve sets up in first sieve below, and the sieve mesh diameter of first sieve is greater than second sieve mesh diameter greatly.
As a further scheme of the invention: the highest end of the first sieve plate and the lowest end of the second sieve plate are arranged on the same side.
As a further scheme of the invention: the sedimentation tank is connected with the water tank through a return pipe.
As a further scheme of the invention: the backflow pipe is provided with a backflow pump, and the inlet end of the backflow pipe is provided with a filter screen.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the large stones and the like input from the feeding pipe are input into the baking oven and are heated at high temperature by the high-temperature heater, so that the subsequent treatment is facilitated. Bulk stone material adds in the baking oven after a period and transmits to the cold soaking case, takes the water tank out through suction pump and drinking-water pipe, through spouting the dish blowout, carries out the sudden cooling to the bulk stone material after the high temperature heating, and the stone is inside to produce tension easily at the sudden cooling behind the high temperature, makes the stone crack, makes things convenient for the breakage of follow-up building stones, improves the effect and the efficiency of system sand, the breakage of building stones more easily facilitates the use. During the building stones of fracture dropped into the crushing room in the cold dip tank, under the drive through outside motor, two sets of crushing rollers rotated relatively, and the building stones that will fracture conveniently are broken, improve the effect and the efficiency of system sand, facilitate the use. The grit that produces the breakage through first sieve and second sieve convenience is sorted out, discharges through first discharging pipe and second discharging pipe, conveniently carries out different uses according to different particle size, can drop into the inlet pipe once more with the grit of the big granule of first discharging pipe discharge simultaneously, makes things convenient for the preparation of grit once more to its breakage. The upper clear water passes through the back flow and transmits to the water tank in the sedimentation tank, makes things convenient for the recycle, avoids the waste of water resource, resources are saved facilitates the use.
Drawings
Fig. 1 is a schematic structural diagram of a sand making machine for safely crushing building stones.
Fig. 2 is a schematic structural diagram of a spray disk in a building stone safe crushing sand making machine.
FIG. 3 is a schematic structural diagram of a crushing roller in a building stone safe crushing sand making machine.
In the figure: 1. the device comprises a feeding pipe, 2, a box body, 3, a baking box, 4, an inclined guide plate, 5, a high-temperature heater, 6, a cold soaking box, 7, a water pumping pipe, 8, a spraying disc, 9, a water pumping pump, 10, a water tank, 11, a crushing chamber, 12, a crushing roller, 13, crushing teeth, 14, a first sieve plate, 15, a second sieve plate, 16, a first discharging pipe, 17, a second discharging pipe, 18, a water guide plate, 19, a water outlet pipe, 20, a sedimentation tank, 21, a return pipe, 22, a filter screen, 23 and a return pump.
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.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows: referring to fig. 1-3, a sand making machine for safe crushing of building stones comprises a box body 2, wherein a feeding pipe 1 is arranged at the top end of the box body 2, and the feeding pipe 1 is convenient for feeding large stones, facilitating subsequent crushing preparation of stones, facilitating sand making and facilitating use.
2 inside toasting case 3 that are equipped with of box, toast case 3 and the 1 intercommunication of inlet pipe, toast 3 inside bottoms of case and be equipped with slope baffle 4, be equipped with high temperature heater 5 on the slope baffle 4, the bold building stones that 1 input of inlet pipe drop into and drop into toasts case 3 in, carry out high temperature heating, convenient subsequent processing to it through high temperature heater 5.
2 inside cold soaking casees 6 that are equipped with of box, 3 exit ends of baking case communicate in coming through transmission pipe and cold soaking case 6, be equipped with water tank 10 on the box 2, be equipped with drinking-water pipe 7 on the water tank 10, the drinking-water pipe 7 exit end is equipped with spouts dish 8, spout dish 8 and set up in cold soaking case 6, install suction pump 9 on the drinking-water pipe 7, bold building stones are in baking case 3 and are transmitted to cold soaking case 6 after adding a period of time in, take water tank 10 out through suction pump 9 and drinking-water pipe 7, spout through spouting dish 8, carry out the rapid cooling to the bold building stones after the high temperature heating, the inside tension that produces of sudden cooling behind the high temperature of stone, make the stone, make things convenient for the breakage of follow-up building stones, improve the effect and the efficiency of system sand, the breakage of the building stones easier, facilitate.
2 inside crushing rooms 11 that are equipped with of box, the exit end and the 11 intercommunications of crushing room of cold dipping case 6, 11 inside two sets of crushing rollers 12 that are equipped with of crushing roller, the outer wall of crushing roller 12 is equipped with broken tooth 13, two sets of crushing rollers 12 are through the mutual interlock setting of broken tooth 13, the building stones of fracture drop into in the cold dipping case 6 in the crushing room 11, under the drive through the external motor, two sets of crushing rollers 12 rotate relatively, the convenient building stones that will fracture already are broken, improve the effect and the efficiency of system sand, facilitate the use.
Inside slope of box 2 is equipped with first sieve 14 and second sieve 15, 14 lowest ends of first sieve are equipped with first discharging pipe 16, 15 lowest ends of second sieve are equipped with second discharging pipe 17, the grit sorting that produces the breakage is convenient through first sieve 14 and second sieve 15, discharge through first discharging pipe 16 and second discharging pipe 17, the convenience carries out different uses according to different particle size, can drop into inlet pipe 1 once more with the grit of the big granule of first discharging pipe 16 exhaust simultaneously, it is broken once more to it, make things convenient for the preparation of grit.
The bottom end of the box body 2 is obliquely provided with a water guide plate 18, the lowest end of the water guide plate 18 is connected with one end of the water guide plate 18, the other end of the water guide plate 18 is connected with a sedimentation tank 20, and water mixed with micro fine velvet sand slides down on the water guide plate 18 through the first sieve plate 14 and the second sieve plate 15 and is transmitted to the sedimentation tank 20 through a water outlet pipe 19 for sedimentation.
Sedimentation tank 20 passes through back flow 21 and is connected with water tank 10, and upper clear water passes through back flow 21 and transmits to water tank 10 in the sedimentation tank 20, and convenient recycle avoids the waste of water resource, resources are saved facilitates the use.
Example two: on the basis of embodiment one, second sieve 15 sets up in first sieve 14 below, and first sieve 14's sieve mesh diameter is greater than 15 sieve mesh diameters of second sieve big, conveniently selects out the grit after the breakage through first sieve 14 and second sieve 15, conveniently carries out different usage according to the particle size of difference, facilitates the use.
The top of first sieve 14 and the 15 least significant ends settings of second sieve are in same one side, avoid piling up of grit, avoid influencing the separation of grit, improve the effect and the efficiency of grit preparation.
Install backwash pump 23 on the back flow 21, back flow 21 entry end is equipped with filter screen 22, and filter screen 22 avoids impurity to block up the pipeline, makes things convenient for the recovery of 20 upper clear water of sedimentation tanks, and backwash pump 23 conveniently improves power.
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. The utility model provides a building stones safe breakage system sand machine, which comprises a box body (2), a serial communication port, box (2) top be equipped with inlet pipe (1), box (2) inside is equipped with toasts case (3), toast case (3) and inlet pipe (1) intercommunication, toast the inside bottom of case (3) and be equipped with slope baffle (4), be equipped with high temperature heater (5) on slope baffle (4), box (2) inside is equipped with cold dipping case (6), toast case (3) exit end and come the intercommunication through transmission pipe and cold dipping case (6), be equipped with water tank (10) on box (2), be equipped with drinking-water pipe (7) on water tank (10), drinking-water pipe (7) exit end is equipped with spray disc (8), box (2) inside is equipped with crushing chamber (11), the exit end and the crushing chamber (11) of cold dipping case (6) intercommunication, crushing chamber (11) inside is equipped with two sets of crushing roller (12, crushing roller (12) outer wall is equipped with broken tooth (13), and the inside slope of box (2) is equipped with first sieve (14) and second sieve (15), and box (2) bottom slope is equipped with water guide plate (18), and water guide plate (18) lower extreme and water guide plate (18) one end are connected, and water guide plate (18) other end and sedimentation tank (20) are connected.
2. The building stone safe crushing sand making machine according to claim 1, characterized in that the spray disk (8) is arranged in a cold leaching tank (6), and a water suction pump (9) is installed on a water suction pipe (7).
3. A safety crushing mill for building stones according to claim 2, characterised in that the crushing rolls (12) are arranged to engage each other by means of crushing teeth (13).
4. A safety crushing and sand making machine according to any one of claims 1 to 3, characterized in that the lowest end of the first screen deck (14) is provided with a first discharge pipe (16) and the lowest end of the second screen deck (15) is provided with a second discharge pipe (17).
5. A safety crushing and sand making machine according to claim 4, characterized in that the highest end of the first screen deck (14) and the lowest end of the second screen deck (15) are arranged on the same side.
6. A safety crushing and sand making machine according to claim 5, characterized in that the settling tank (20) is connected with the water tank (10) through a return pipe (21).
7. A safety crushing and sand making machine for building stones as claimed in claim 6, characterized in that a return pump (23) is installed on the return pipe (21), and a filter screen (22) is arranged at the inlet end of the return pipe (21).
CN201911344906.4A 2019-12-24 2019-12-24 Safe crushing sand making machine for building stones Pending CN110947490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911344906.4A CN110947490A (en) 2019-12-24 2019-12-24 Safe crushing sand making machine for building stones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911344906.4A CN110947490A (en) 2019-12-24 2019-12-24 Safe crushing sand making machine for building stones

Publications (1)

Publication Number Publication Date
CN110947490A true CN110947490A (en) 2020-04-03

Family

ID=69983752

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911344906.4A Pending CN110947490A (en) 2019-12-24 2019-12-24 Safe crushing sand making machine for building stones

Country Status (1)

Country Link
CN (1) CN110947490A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111974491A (en) * 2020-07-10 2020-11-24 梁香娥 Lithium battery recovery device with high safety performance
CN112138761A (en) * 2020-08-27 2020-12-29 枣庄鑫金山智能装备有限公司 Quartz sand system sand machine for building
CN112295704A (en) * 2020-09-29 2021-02-02 王麦玲 Concrete recycling reducing mechanism
CN113441533A (en) * 2021-07-30 2021-09-28 昆明理工大学 Method for accelerating waste stone to form soil by utilizing coal gangue

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021721A1 (en) * 2008-08-21 2010-02-25 Flsmidth A/S Cooling and comminution of particulate material
CN107824254A (en) * 2017-12-11 2018-03-23 郑州格瑞塔电子信息技术有限公司 A kind of efficient cone crusher device of building stone
CN108057481A (en) * 2018-01-24 2018-05-22 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing agitating device
CN108097422A (en) * 2017-12-11 2018-06-01 郑州格瑞塔电子信息技术有限公司 A kind of building stone high-efficient gear breaker
CN108212485A (en) * 2018-01-24 2018-06-29 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing brushing device
CN108325603A (en) * 2018-01-24 2018-07-27 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing cleaning grading plant
CN209715207U (en) * 2019-01-15 2019-12-03 新昌县大市聚镇海房机械厂 A kind of construction material disintegrating apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021721A1 (en) * 2008-08-21 2010-02-25 Flsmidth A/S Cooling and comminution of particulate material
CN107824254A (en) * 2017-12-11 2018-03-23 郑州格瑞塔电子信息技术有限公司 A kind of efficient cone crusher device of building stone
CN108097422A (en) * 2017-12-11 2018-06-01 郑州格瑞塔电子信息技术有限公司 A kind of building stone high-efficient gear breaker
CN108057481A (en) * 2018-01-24 2018-05-22 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing agitating device
CN108212485A (en) * 2018-01-24 2018-06-29 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing brushing device
CN108325603A (en) * 2018-01-24 2018-07-27 深圳市晟腾企业管理有限公司 A kind of building sandstone efficiency crushing cleaning grading plant
CN209715207U (en) * 2019-01-15 2019-12-03 新昌县大市聚镇海房机械厂 A kind of construction material disintegrating apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111974491A (en) * 2020-07-10 2020-11-24 梁香娥 Lithium battery recovery device with high safety performance
CN112138761A (en) * 2020-08-27 2020-12-29 枣庄鑫金山智能装备有限公司 Quartz sand system sand machine for building
CN112295704A (en) * 2020-09-29 2021-02-02 王麦玲 Concrete recycling reducing mechanism
CN113441533A (en) * 2021-07-30 2021-09-28 昆明理工大学 Method for accelerating waste stone to form soil by utilizing coal gangue

Similar Documents

Publication Publication Date Title
CN110947490A (en) Safe crushing sand making machine for building stones
CN103553395B (en) A kind of low cement content regeneration green concrete and preparation method thereof
CN110918179A (en) Building grit safety breaker
CN111604263A (en) Building grit safety screening device
CN110152866A (en) A kind of efficient municipal construction sandstone screening installation
CN106760166A (en) A kind of glass fiber reinforced cement composite thermo-insulating wall board and preparation method thereof
CN103332902A (en) Water absorbent swelling resin aggregate concrete and preparation method thereof
CN209271552U (en) A kind of raw material grinding device of the manufacture of cement with screening function
CN103274648B (en) Granite stone powder doped high-strength concrete tubular pile and production method thereof
CN105152597B (en) Using regenerated aggregate concrete of discarded clay brick and discarded concrete and preparation method thereof
CN110947448A (en) Gravel grinding and crushing safety screening device
CN103193424A (en) Method for producing pervious concrete through comprehensive utilization of coal gangues
CN101797771A (en) Preparation method of slurry for grouting and sand feeding of mined-out region under highway
CN202844748U (en) Integrated upward-flow water treatment device
CN102784516A (en) Integral upward flow water treatment device
CN105178511B (en) Section steel flange weakens regeneration concrete energy dissipation coupled column and preparation method thereof
CN101913809A (en) Expanded quartz sand water-permeable colored brick
CN106242437A (en) A kind of prestressed high-strength concrete pile of non-evaporating pressure and preparation method thereof
CN210585228U (en) Novel indoor outer ornamental material processing device with adjustable
CN110586237A (en) Broken screening all-in-one of concrete stone material
CN201324606Y (en) Two-in-one raw material stirring machine
CN102431089A (en) Preparation method of construction waste fireproof thermal-insulation skeleton building block
CN113171865A (en) Preparation method of high-quality machine-made sand
CN110898910A (en) Broken edulcoration all-in-one of safe grit
CN210994507U (en) High-efficient system sand machine of selecting separately for building engineering

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200403

RJ01 Rejection of invention patent application after publication