Exterior wall rock wool recycling system

Abstract

The utility model discloses an outer wall rock wool recycling system which comprises a shredding machine, a crusher, a dust remover and a negative pressure fan which are arranged in sequence, and the shredding machine and the crusher are connected through a conveying belt; the dust remover comprises a gravity dust remover and a centrifugal dust remover, the crusher is arranged above the gravity dust remover, and the gravity dust remover is sequentially connected to the centrifugal dust remover and the negative pressure fan. In the embodiment of the utility model, the shredding machine is a double-shaft shredding machine, and two strip-shaped tooth-shaped tool bits which are meshed with each other are arranged in the double-shaft shredding machine and are used for cutting into chippings. Construction waste of rock wool boards is crushed and separated step by step, ground anchors, sand cement, plastics and cloth substances are separated, and finally classified recycling treatment is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock wool recycling, and particularly relates to a system for recycling and utilization of exterior wall rock wool. Background Technique

[0002] After the traditional thermal insulation rock wool board is installed on the wall, in order to fix it to the original wall, it is necessary to cooperate with brushing adhesives, fiberglass mesh, anchor bolts, mortar, etc. During the demolition or redecoration of existing buildings, due to problems such as good weather resistance, difficult degradation, and difficult separation of various mixtures of rock wool boards, it has increasingly become a difficult-to-solve construction waste problem. Content of the Utility Model

[0003] In order to solve the problem of difficult treatment of rock wool boards after demolition and the problem of difficult separation of rock wool, fiberglass mesh, anchor bolts, sand ash, etc., a system for recycling and utilization of exterior wall rock wool provided by this application adopts the following technical solutions:

[0004] A system for recycling and utilization of exterior wall rock wool includes a shredder, a crusher, a dust collector, and a negative pressure fan arranged in sequence. The shredder and the crusher are connected by a conveyor belt; the dust collector includes a gravity dust collector and a centrifugal dust collector. The crusher is arranged above the gravity dust collector, and the gravity dust collector is sequentially connected to the centrifugal dust collector and the negative pressure fan.

[0005] In an embodiment of the utility model, the shredder is a double-shaft shredder, and two mutually meshing long strip-shaped toothed cutter heads are arranged in the double-shaft shredder for cutting into chips.

[0006] In an embodiment of the utility model, the crusher is a hammer crusher. A crushing chamber and hammers are arranged in the machine shell. A sieve plate is arranged at the connection of the discharge port and the crushing chamber. Wear-resistant lining plates are laid inside the crushing chamber, and the aperture of the sieve plate enables the particle size of the material to be 5 - 50 mm.

[0007] In an embodiment of the utility model, a magnetic separator conveyor belt is arranged on the conveyor belt, and the magnetic separator conveyor belt is connected to the feeding area 1.

[0008] In an embodiment of the utility model, an inclined unsealed baffle is arranged in front of the internal discharge port of the gravity dust collector, aiming to prevent the dust or large particles from being carried away by too fast wind speed and improve the dust collection efficiency.

[0009] In an embodiment of the utility model, the lower parts of the gravity dust collector and the first centrifugal dust collector are respectively the feeding area 2 and the feeding area 3, and the waste material is sand ash. The discharge ports of both are connected to the block cement product production mechanism.

[0010] The centrifugal dust collector includes a first centrifugal dust collector and a second centrifugal dust collector; the lower part of the first centrifugal dust collector includes a lower cone, and the material from the gravity dust collector enters the first centrifugal dust collector tangentially from the side, and the fine particles enter the second centrifugal dust collector from the top; the second centrifugal dust collector is at least two in parallel.

[0011] In an embodiment of the present invention, the lower part of the second centrifugal dust collector is a blanking area 4, and most of the materials in this area are rock wool fibers. The lower discharge port of the second centrifugal dust collector is connected to an electric furnace for melting rock wool.

[0012] In an embodiment of the present invention, the dust collector further includes a bag filter disposed between the second centrifugal dust collector and the negative pressure fan. The lower part of the bag filter is a blanking area 5, and the waste is plastic material, namely the mesh cloth.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] There is no relatively comprehensive equipment system for treating the waste of rock wool buildings after demolition in the existing process. In this application, the construction waste of rock wool boards is crushed, separated step by step, and the anchor nails, rock wool fibers, sand ash, plastics and cloth materials are separated and treated respectively, and finally classified treatment is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0016] Figure 1 It is a schematic structural diagram of an external wall rock wool recycling system provided by the present invention.

[0017] Among them, 1 - double-shaft shredder, 2 - conveyor belt, 3 - iron remover conveyor belt, 4 - hammer crusher, 5 - gravity dust collector, 6 - first centrifugal dust collector, 7 - second centrifugal dust collector, 8 - bag filter, 9 - negative pressure fan;

[0018] 101 - long strip-shaped toothed cutter head;

[0019] 501 - baffle;

[0020] 601 - lower cone of the first centrifugal dust collector;

[0021] 701 - first electric valve, 702 - second electric valve, 703 - lower cone of the second centrifugal dust collector. DETAILED DESCRIPTION OF THE INVENTION

[0022] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] An external wall rock wool recycling system

[0025] As Figure 1 shown, it includes a double-shaft shredder 1. A conveyor belt 2 is arranged at the discharge port below the double-shaft shredder 1. The other end of the conveyor belt 2 is connected to a hammer crusher 4. An iron remover conveyor belt 3 is arranged on the conveyor belt 2, and the iron remover conveyor belt 3 is connected to the feeding area 1; the lower part of the hammer crusher 4 is communicated with a gravity dust collector 5, and the upper outlet of the gravity dust collector 5 is sequentially connected to a first centrifugal dust collector 6, a second centrifugal dust collector 7, a bag filter 8, and a negative pressure fan 9; the lower part of the first centrifugal dust collector 6 includes a first centrifugal dust collector lower cone 601. The material from the gravity dust collector 5 enters the first centrifugal dust collector 6 tangentially from the side, and the fine particles enter the second centrifugal dust collector 7 from the top of the first centrifugal dust collector 6; the lower part of the second centrifugal dust collector 7 includes a second centrifugal dust collector lower cone 703; the second centrifugal dust collector 7 is at least two in parallel. A first electric valve 701 is arranged on the connecting pipeline between the front of each second centrifugal dust collector 7 and the first centrifugal dust collector 6, and a second electric valve 702 is arranged on the connecting pipeline between the rear of each second centrifugal dust collector 7 and the bag filter 8 to control the opening and closing of each second centrifugal dust collector for easy maintenance.

[0026] Below the gravity dust collector 5 is the feeding area 2; below the first centrifugal dust collector 6 is the feeding area 3, below the second centrifugal dust collector 7 is the feeding area 4, and below the bag filter 8 is the feeding area 5.

[0027] Two mutually meshing long strip-shaped toothed cutter heads 101 are arranged in the double-shaft shredder 1 for cutting into scraps.

[0028] The waste exterior wall materials containing waste cotton are sent to the double-shaft shredder 1 by a forklift. The long strip-shaped tooth-shaped cutter heads 101 in the double-shaft shredder contain strip-shaped tooth-shaped cutter heads. The cutter heads are in sheet form. By adjusting the width of the cutter heads, the width of the cut objects can be adjusted. The two edge-breaking cutter heads can bite each other. Due to the high hardness requirement of the cutter heads, the double-shaft crushing speed is 10 r / min, which can shear iron, fiber, rubber and plastic materials into small pieces. The debris of the materials cut this time includes iron nails, plastic chips, exterior wall sand ash, rock wool fibers, etc.

[0029] The shredded waste materials are conveyed to the hammer crusher 4 by the conveyor belt 2, and pass through the iron remover conveyor belt 3 in the middle. The iron remover conveyor belt contains permanent magnets. Under the magnetic attraction of the permanent magnets, iron debris such as anchor nails and broken iron nails is adsorbed onto the iron remover conveyor belt. The iron debris is conveyed away from the permanent magnetic area by the belt and automatically falls into the blanking area 1. The materials in this area are basically iron waste materials and can be sold and recycled for the second time.

[0030] The waste materials enter the hammer crusher 4. The hammer crusher is a commonly used device for crushing materials with relatively high hardness in industrial fields such as cement, chemical industry, electric power, and metallurgy. A crushing chamber and hammer heads are arranged inside the casing. A sieve plate is arranged at the connection between the discharge port and the crushing chamber, and wear-resistant linings are laid inside the crushing chamber. The materials sent by the conveyor belt 2 are broken into powder under the repeated beating of the high-speed rotating hammer heads

[0031] in the hammer crusher. Sieve plates with different aperture sizes are replaced according to needs. In this application, the aperture of the sieve plate makes the particle size of the materials 5 - 50 mm.

[0032] The gravity dust collector 5, the first centrifugal dust collector 6, the second centrifugal dust collector 7, the bag dust collector 8 and the negative pressure fan 9 are connected in sequence. Under the action of the negative pressure fan 9, a negative pressure of 5 - 8 is maintained in the passage. The negative pressure fan 9 overcomes the resistance of each device to achieve the effect of transporting particles. According to the size of the system resistance, the frequency opening of the inverter of the negative pressure fan 9 is adjusted to adjust the wind force.

[0033] The materials crushed by the hammer crusher have basically been broken. Under the action of the negative pressure fan 9, they fall into the gravity dust collector 5. Through the action of gravity, particles with a larger density such as sand ash blocks fall into the lower bin and enter the blanking area 2. Small dust and sand ash dust with a smaller density are carried out of the gravity dust collector by the negative pressure wind. An inclined unsealed baffle is arranged in front of the discharge port inside the gravity dust collector. The structure of this baffle is not limited to the structure shown in the figure and can be designed as two adjustable structures and inclined structures. The purpose is to prevent the dust or large particles from being carried away by too fast wind speed and improve the dust collection efficiency.

[0034] After the materials exit from the gravity dust collector 5, they continue to enter the first centrifugal dust collector 6 under the action of the negative pressure fan 9. In this equipment, the frequency of the negative pressure fan 9 is adjusted to adjust the wind speed of the system. The angle of the lower cone 601 of the first centrifugal dust collector is not limited to the illustrated angle and can be adjusted to 45 - 55° according to the material properties. The wind speed is adjusted to 18 - 25 m / s, and small particles of sand ash dust with large density can be separated and enter the blanking 3 area. The basic properties of the materials in the blanking 2 and blanking 3 areas are the same and can be recycled into the production of block cement products.

[0035] Rock wool fibers and plastic dust with small density are taken away from the upper air duct by centrifugal force through the negative pressure air duct and enter the second centrifugal dust collector 7. In the stage of the centrifugal dust collector 7, it is not limited to the two illustrated devices, and multiple devices can be set according to the air volume and the component proportion of the materials. The first electric valve 701 and the second electric valve 702 are arranged before and after each single dust collector, and the air volume and wind speed of the dust collector can be adjusted. The wind speed adjustment range is 10 - 20 m / s. The angle of the lower cone 703 of the second centrifugal dust collector is not limited to the illustrated angle and can be adjusted to 55 - 75° according to the material properties to prevent the material jamming caused by the light material density. In this process, the rock wool fibers are separated by air separation and enter the blanking 4 area. The materials in this area are basically rock wool fibers and can enter the production process of melting in a rock wool electric furnace.

[0036] Plastic products and other relatively light substances are conveyed to the bag - type dust collector 8, collected by the dust - removing filter bags, and the waste materials are collected and fall into the blanking 5 area, which is basically combustible plastic substances and can be burned and reused in a rock wool incinerator.

[0037] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An external wall rock wool recycling system, characterized in that, It includes a shredder, a crusher, a dust collector, and a negative pressure fan arranged in sequence. The shredder and the crusher are connected by a conveyor belt. The dust collector includes a gravity dust collector and a centrifugal dust collector. The crusher is arranged above the gravity dust collector, and the gravity dust collector is sequentially connected to the centrifugal dust collector and the negative pressure fan.

2. The system according to claim 1, wherein The shredder is a double-shaft shredder, and two long strip-shaped toothed cutter heads that bite each other are arranged in the double-shaft shredder.

3. The system according to claim 1, wherein A crushing chamber and hammers are arranged inside the machine housing. A sieve plate is arranged at the connection between the discharge port and the crushing chamber. An abrasion-resistant lining plate is laid inside the crushing chamber. The aperture of the sieve plate makes the particle size of the material range from 5 to 50 mm.

4. The system according to claim 1, characterized in that, An iron remover conveyor belt is arranged on the conveyor belt.

5. The system according to claim 1, wherein An inclined and unsealed baffle is arranged in front of the internal discharge port of the gravity dust collector.

6. The system according to claim 1, wherein The centrifugal dust collector includes a first centrifugal dust collector and a second centrifugal dust collector. The lower part of the first centrifugal dust collector includes a lower cone. The material from the gravity dust collector enters the first centrifugal dust collector tangentially from the side, and the fine particles enter the second centrifugal dust collector from the top.

7. The system according to claim 6, wherein The second centrifugal dust collector is at least two in parallel.

8. The system according to claim 6, wherein The lower discharge ports of the gravity dust collector and the first centrifugal dust collector are both connected to a block cement product production mechanism.

9. The system according to claim 6, wherein The lower discharge port of the second centrifugal dust collector is connected to an electric furnace for melting rock wool.

10. The system according to claim 6, characterized in that, The dust collector further includes a bag filter arranged between the second centrifugal dust collector and the negative pressure fan.

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