CN111014187A - Recycled coarse aggregate surface adhesion aging mortar separation device - Google Patents
Recycled coarse aggregate surface adhesion aging mortar separation device Download PDFInfo
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- CN111014187A CN111014187A CN201911288589.9A CN201911288589A CN111014187A CN 111014187 A CN111014187 A CN 111014187A CN 201911288589 A CN201911288589 A CN 201911288589A CN 111014187 A CN111014187 A CN 111014187A
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- coarse aggregate
- recycled coarse
- separation
- box body
- recycled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a separating device for recycled coarse aggregate surface attached aged mortar, which comprises a power control system, a heating system and a separation and collection system, wherein the power control system comprises a motor, a speed reducer and a speed controller; the heating system comprises a box body, a box door, an electric furnace wire and a temperature controller; the separation and collection system comprises a rolling net barrel, a hollow steel ball and a material receiving box. The power control system is used for providing power required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; the heating system is used for providing the temperature required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; and the separation and collection system is used for separating and collecting the aged mortar attached to the surface of the recycled coarse aggregate. The method can realize the separation of the original natural coarse aggregate and the surface-attached aged mortar in the recycled coarse aggregate, measure the content of the surface-attached aged mortar in the recycled coarse aggregate, provide a basis for researching the influence of the content of the surface-attached aged mortar in the recycled coarse aggregate on the performance of the recycled concrete, and provide a reference for the design of the mixing proportion of the recycled coarse aggregate concrete so as to ensure the engineering quality of the recycled coarse aggregate concrete.
Description
Technical Field
The invention relates to a recycled coarse aggregate treatment device, in particular to a recycled coarse aggregate surface attached aged mortar separation device.
Background
With the rapid development of the construction industry in China, a large number of concrete buildings are dismantled because of reaching the expected service life, failing to meet the use requirements and the like, and a large amount of concrete waste is generated. In order to effectively utilize the concrete construction waste, the concrete construction waste is generally prepared into recycled aggregate and then used for preparing recycled concrete so as to realize resource utilization of the recycled concrete.
Chinese patent CN 108483961 a discloses a stripping device for recycled concrete coarse aggregate mortar and chinese patent CN 109012867 a discloses a stripping device for conical disc type recycled concrete coarse aggregate mortar, both of which are mainly used for large-scale mechanical physical strengthening of recycled concrete coarse aggregate, and are used for industrial production, i.e. shaping the recycled concrete coarse aggregate by external force and removing aging mortar with weak surface part, but can not completely remove the aging mortar attached to the surface of the recycled concrete coarse aggregate, i.e. can not be used for accurately measuring the content of the aging mortar attached to the surface of the recycled concrete coarse aggregate.
However, the concrete recycled coarse aggregate has the following disadvantages due to the aged mortar attached to the surface of the concrete recycled coarse aggregate: the concrete prepared from the untreated recycled coarse aggregate has the defects of high water absorption capacity, high porosity, high crushing value, low density and the like, generally has poor working performance, mechanical property and durability, and the adverse effect is larger along with the increase of the content of the attached aged mortar on the surface of the recycled coarse aggregate. Therefore, it is necessary to measure the content of the aged mortar adhered to the surface of the recycled coarse aggregate.
Disclosure of Invention
The invention aims to provide a device for separating surface-attached aged mortar from original natural coarse aggregate in recycled coarse aggregate, which can be used for separating the surface-attached aged mortar from the original natural coarse aggregate in the recycled coarse aggregate, measuring the content of the surface-attached aged mortar in the recycled coarse aggregate, providing a basis for researching the influence of the content of the surface-attached aged mortar in the recycled coarse aggregate on the performance of recycled concrete, and simultaneously providing a reference for the design of the mixing ratio of the recycled coarse aggregate concrete so as to ensure the engineering quality of the recycled coarse aggregate concrete.
The invention provides a device for separating aging mortar adhered to the surface of a recycled coarse aggregate, which comprises a power control system, a heating system and a separation and collection system; wherein:
the power control system is used for providing power required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; the device comprises two bearings and a support, wherein the two bearings are arranged on the support, one end of the motor is connected with the speed controller, the other end of the motor is connected with a power input shaft of the speed reducer through a small transmission gear, and power and time provided by a power control system are adjustable and are controlled by the speed controller; the speed reducer is connected with one end of a bearing;
the heating system is used for providing the temperature required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; the electric stove wire heating box comprises a box body, a box door, electric stove wires and a temperature controller, wherein the box door is arranged on the box body, the electric stove wires are uniformly distributed on the inner wall of the box body, and the electric stove wires are connected with the temperature controller;
the separation and collection system is used for separating and collecting the aged mortar attached to the surface of the recycled coarse aggregate; the automatic feeding device comprises a rolling mesh barrel, an operation opening, a cover plate, a hollow steel ball and a material receiving box, wherein the operation opening is formed in the surface of the rolling mesh barrel, the cover plate is arranged on the operation opening, the hollow steel ball is placed in the rolling mesh barrel, and the material receiving box is placed right below the rolling mesh barrel and is positioned in a box body;
the rolling net barrel is placed in the box body, the other end of one bearing is inserted into the box body and connected with one side of the rolling net barrel, one end of the other bearing is inserted into the box body and connected with the other side of the rolling net barrel, and the two bearings are coaxially arranged.
In the invention, the inner sides of the box body and the box door of the heating system are both provided with refractory lining plates, and the outside of the bearing in the box body is wrapped with the refractory lining plates.
In the invention, the electric furnace wire of the heating system can ensure that the temperature in the box body can reach 500 ℃ at most, and the temperature and the time are adjustable and are controlled by the temperature controller.
In the invention, the rolling mesh barrel and the cover plate of the separation and collection system are respectively provided with rectangular holes with the width of 5 mm.
In the invention, the diameters of the hollow steel balls of the separation and collection system are respectively one or more of 20mm, 30mm and 40mm, the corresponding inner hollow diameters are respectively 10mm, 15mm and 20mm, and the hollow steel balls with different diameters can be placed according to the requirements.
In the invention, the cover plate of the separation and collection system is fixed on the operation opening through screws.
In the invention, the joints of the two bearings and the rolling net barrel are connected in a welding mode.
The invention has the beneficial effects that:
(1) the separation device for the surface-attached aged mortar of the recycled coarse aggregate, provided by the invention, is simple and convenient to operate, the concrete recycled coarse aggregate which is dried to constant weight is placed in a rolling mesh drum, the defects of the joint surface of the original natural coarse aggregate and the surface-attached aged mortar in the recycled coarse aggregate are increased through high-temperature heating, and the interface bonding force is reduced; meanwhile, hollow steel balls with different grain sizes are added, and the rolling net barrel is rotated through mechanical external force, so that the regenerated coarse aggregate and the hollow steel balls are continuously collided and rubbed with each other in the rolling net barrel, the defect of a joint surface of original natural coarse aggregate and surface-attached aged mortar in the regenerated coarse aggregate is continuously increased, the interface binding force of the original natural coarse aggregate and the surface-attached aged mortar in the regenerated coarse aggregate is gradually reduced, and the separation of the surface-attached aged mortar in the regenerated coarse aggregate is realized.
(2) The separation device for the recycled coarse aggregate surface attached aged mortar provided by the invention has the advantages that the rotating speed and time of the rolling mesh barrel, the heating temperature and time and the diameter of the hollow steel ball are adjustable, the separation device is suitable for separating the recycled coarse aggregate surface attached aged mortar with different specifications (including particle size, original concrete strength, original natural coarse aggregate material and the like), and particles smaller than 5mm generated in the separation process can fall into the material receiving box through the gap between the rolling mesh barrel and the cover plate, so that a large amount of dust is prevented from being generated.
(3) The device for separating the surface-attached aged mortar of the recycled coarse aggregate can realize separation of the original natural coarse aggregate and the surface-attached aged mortar in the recycled coarse aggregate, measure the content of the surface-attached aged mortar in the recycled coarse aggregate, provide a basis for researching the influence of the content of the surface-attached aged mortar of the recycled coarse aggregate on the performance of recycled concrete, and provide a reference for the design of the mixing ratio of the recycled coarse aggregate concrete so as to ensure the engineering quality of the recycled coarse aggregate concrete.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic view of a device for separating aged mortar adhered to the surface of a recycled coarse aggregate according to the present invention.
Reference numbers in the figures: 1 is a speed controller, 2 is a motor, 3 is a speed reducer, 4 is a bracket, 5 is a bearing, 6 is an electric furnace wire, 7 is a box body, 8 is a box door, 9 is a temperature controller, 10 is a rolling net barrel, 11 is an operation opening, 12 is a cover plate, 13 is a hollow steel ball, and 14 is a material receiving box.
Detailed Description
The invention is further illustrated by the following figures and examples. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1, the invention comprises a speed controller 1, a motor 2, a speed reducer 3, a bracket 4, a bearing 5, a furnace wire 6, a box body 7, a box door 8, a temperature controller 9, a rolling net barrel 10, an operation port 11, a cover plate 12, a hollow steel ball 13 and a material receiving box 14.
A device for separating aged mortar adhered to the surface of recycled coarse aggregate comprises a power control system, a heating system and a separation and collection system.
The power control system comprises a speed controller 1, a motor 2, a speed reducer 3, a support 4 and a bearing 5. Two bearings 5 are respectively positioned on the support 4, the speed controller 1 is connected with the motor 2, the motor 2 is connected with the speed reducer 3, and the speed reducer 3 is connected with one end of one bearing 5.
The heating system comprises an electric stove wire 6, a box body 7, a box door 8 and a temperature controller 9, wherein the box door 8 is arranged on the box body 7, the electric stove wire 6 is uniformly arranged on the inner wall of the box body 7, and the electric stove wire 6 is connected with the temperature controller 9.
In the invention, the separation and collection system comprises a rolling mesh barrel 10, an operation opening 11, a cover plate 12, a hollow steel ball 13 and a material receiving box 14, wherein the rolling mesh barrel 10 is positioned in a box body 7, one side of the rolling mesh barrel 10 is welded with the other end of one bearing 5, one end of the other bearing 5 is welded with the other side of the rolling mesh barrel 10, and the two bearings 5 are coaxially arranged. And the motor 2 and the speed reducer 3 of the power control system are connected with the box body 7 of the heating system and the rolling mesh barrel 10 of the separation and collection system through the two bearings 5.
The motor 2 of the power control system is connected with the power input shaft of the speed reducer 3 through a small transmission gear, and the power and time provided by the power control system are adjustable and controlled by the speed controller 1.
And refractory lining plates are arranged on the inner sides of a box body 7 and a box door 8 of the heating system and on the outer surface of a bearing 5 in the box body 7.
The electric furnace wire 6 of the heating system can lead the temperature in the box body 7 to reach 500 ℃ at most, and the temperature and the time can be adjusted and controlled by the temperature controller 9.
Rectangular holes are uniformly distributed in the rolling mesh bucket 10 and the cover plate 12 of the separation and collection system, and the width of each hole is 5 mm.
The diameters of common hollow steel balls 13 of the separation and collection system are respectively 20mm, 30mm and 40mm, the corresponding inner hollow diameters are respectively 10mm, 15mm and 20mm, and hollow steel balls with different diameters can be placed into the separation and collection system according to requirements.
The cover plate 12 of the separation and collection system is fixed on the operation opening through screws.
The material receiving box 14 is positioned under the rolling net barrel 10 and is placed inside the box body 7.
The operation method of the invention is as follows: the concrete recycled coarse aggregate which is dried to constant weight is M0Placing the recycled aggregate in a rolling mesh barrel 10, adding a hollow steel ball 13, fixing a cover plate 12 on an operation opening 11 through a screw, closing a box door 7, opening a temperature controller 9 to set heating temperature and time, heating the recycled aggregate to a preset temperature through an electric furnace wire 6, stabilizing the recycled aggregate for 15-30 min after the preset temperature is reached, continuously keeping the temperature, then opening a speed controller 1 to set rotating speed and time, so that the recycled coarse aggregate in the rolling mesh barrel 10 and the hollow steel ball 13 continuously collide and rub with each other in a rolling mesh passage, the defects of a bonding surface of original natural coarse aggregate in the recycled coarse aggregate and surface-attached aged mortar are continuously increased, the interface bonding force of the recycled coarse aggregate and the surface-attached aged mortar is gradually reduced, and the separation of the recycled coarse aggregate surface-; particles smaller than 5mm generated in the separation process can fall into the material receiving box 14 through the gap between the rolling mesh barrel 10 and the cover plate 12, and the mass of the particles is M1. After the test is stopped, the equipment is closed, the box door 8 is opened, after the equipment is cooled to the room temperature, the residual aggregate in the rolling mesh barrel is taken out, the aged mortar particles with the mass of M in the aggregate are sorted out2(ii) a If a large amount of the aged mortar still adheres to the coarse aggregate, the above test is repeated until only a small amount of the aged mortar adheres to the surface of the recycled coarse aggregate.
Namely, the content of the aging mortar attached to the surface of the recycled coarse aggregate: w = (M)1+ M2+…）/ M0×100
In this example, the mass M of the recycled coarse aggregate after drying to constant weight02321.6g, heating to 300 ℃, stabilizing for 20min, keeping the temperature, setting the rotating speed of the rolling net barrel to be 90rad/min, rotating for 10min, and receiving the mass M of the aged mortar in the material box1342.4g, the residual aggregate in the roller screen barrel is taken out, and aged mortar particles in the aggregate are sorted out, wherein the aged mortar particles have the mass M286.9g, and only a small amount of the attached aged mortar was adhered to the surface of the recycled coarse aggregate in the roller screen bucket. Substituting into a calculation formula of the content of the aging mortar attached to the surface of the recycled coarse aggregate: w = (M)1+ M2+…）/ M0×100=（342.4+86.9）/2321.6×100=18.5%。
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a regeneration coarse aggregate surface adheres to ageing mortar separator which characterized in that: comprises a power control system, a heating system and a separation and collection system; wherein:
the power control system is used for providing power required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; the device comprises two bearings and a support, wherein the two bearings are arranged on the support, one end of the motor is connected with the speed controller, the other end of the motor is connected with a power input shaft of the speed reducer through a small transmission gear, and power and time provided by a power control system are adjustable and are controlled by the speed controller; the speed reducer is connected with one end of a bearing;
the heating system is used for providing the temperature required by the separation of the aged mortar attached to the surface of the recycled coarse aggregate; the electric stove wire heating box comprises a box body, a box door, electric stove wires and a temperature controller, wherein the box door is arranged on the box body, the electric stove wires are uniformly distributed on the inner wall of the box body, and the electric stove wires are connected with the temperature controller;
the separation and collection system is used for separating and collecting the aged mortar attached to the surface of the recycled coarse aggregate; the automatic feeding device comprises a rolling mesh barrel, an operation opening, a cover plate, a hollow steel ball and a material receiving box, wherein the operation opening is formed in the surface of the rolling mesh barrel, the cover plate is arranged on the operation opening, the hollow steel ball is placed in the rolling mesh barrel, and the material receiving box is placed right below the rolling mesh barrel and is positioned in a box body;
the rolling net barrel is placed in the box body, the other end of one bearing is inserted into the box body and connected with one side of the rolling net barrel, one end of the other bearing is inserted into the box body and connected with the other side of the rolling net barrel, and the two bearings are coaxially arranged.
2. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: the box body and the inner side of the box door of the heating system are both provided with refractory lining plates, and the outside of the bearing in the box body is wrapped with the refractory lining plates.
3. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: the electric furnace wire of the heating system can enable the temperature in the box body to reach 500 ℃ at most, and the temperature and the time are adjustable and controlled by the temperature controller.
4. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: rectangular holes are uniformly distributed in the rolling mesh bucket and the cover plate of the separation and collection system, and the width of each hole is 5 mm.
5. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: the hollow steel balls of the separation and collection system have diameters of one or more of 20mm, 30mm and 40mm respectively, the corresponding inner hollow diameters are 10mm, 15mm and 20mm respectively, and the hollow steel balls with different diameters can be placed into the separation and collection system as required.
6. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: and the cover plate of the separation and collection system is fixed on the operation port through screws.
7. The device for separating the recycled coarse aggregate surface-adhered aged mortar according to claim 1, wherein: the joints of the two bearings and the rolling net barrel are connected in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288589.9A CN111014187A (en) | 2020-03-10 | 2020-03-10 | Recycled coarse aggregate surface adhesion aging mortar separation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911288589.9A CN111014187A (en) | 2020-03-10 | 2020-03-10 | Recycled coarse aggregate surface adhesion aging mortar separation device |
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| CN111014187A true CN111014187A (en) | 2020-04-17 |
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| CN201911288589.9A Pending CN111014187A (en) | 2020-03-10 | 2020-03-10 | Recycled coarse aggregate surface adhesion aging mortar separation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521037A (en) * | 2020-12-11 | 2021-03-19 | 扬州大学 | Equipment for high-temperature cooperative reinforcement of recycled aggregate and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10272449A (en) * | 1997-03-28 | 1998-10-13 | Chichibu Onoda Cement Corp | Waste concrete material treating method and device therefor |
| CN1834051A (en) * | 2005-03-17 | 2006-09-20 | 张政丰 | Concrete regeneration operation |
| CN103611718A (en) * | 2013-11-18 | 2014-03-05 | 陈应强 | Construction waste pre-grinding and sorting device |
| CN105084820A (en) * | 2015-08-10 | 2015-11-25 | 湖北益通建设股份有限公司 | Method for preparing cement-stabilized macadam material through waste concrete |
| CN108483961A (en) * | 2018-04-03 | 2018-09-04 | 中国矿业大学 | A kind of recycled concrete coarse aggregate mortar stripping off device |
-
2020
- 2020-03-10 CN CN201911288589.9A patent/CN111014187A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10272449A (en) * | 1997-03-28 | 1998-10-13 | Chichibu Onoda Cement Corp | Waste concrete material treating method and device therefor |
| CN1834051A (en) * | 2005-03-17 | 2006-09-20 | 张政丰 | Concrete regeneration operation |
| CN103611718A (en) * | 2013-11-18 | 2014-03-05 | 陈应强 | Construction waste pre-grinding and sorting device |
| CN105084820A (en) * | 2015-08-10 | 2015-11-25 | 湖北益通建设股份有限公司 | Method for preparing cement-stabilized macadam material through waste concrete |
| CN108483961A (en) * | 2018-04-03 | 2018-09-04 | 中国矿业大学 | A kind of recycled concrete coarse aggregate mortar stripping off device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521037A (en) * | 2020-12-11 | 2021-03-19 | 扬州大学 | Equipment for high-temperature cooperative reinforcement of recycled aggregate and use method |
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Application publication date: 20200417 |
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