Negative pressure type environment-friendly production line for producing building aggregate by using building waste

Abstract

The invention relates to a negative pressure type environment-friendly production line for producing building aggregate by using building waste. The negative pressure type environment-friendly production line comprises a primary crusher, an iron removal sorting machine; a screening machine; a secondary crusher; a magnetic separation screening machine; a sorting machine; sealing the pipeline; a sucking pump; and a watering device. In the production process, construction waste raw materials are fed into a first-stage crusher through a raw material loader to be crushed, then the materials are sequentially conveyed into machines such as an iron removal sorting machine to be treated, and finally the materials are conveyed to a finished product warehouse in a classified mode through three pipelines. In the whole production process, a peripheral sealing pipeline, an air extracting pump and a water spraying device are added, so that totally-closed production is realized under the micro-negative pressure condition. According to the construction waste recycling production line, the construction waste recycling efficiency is improved through the perfect production process and equipment, the whole production line is in a micro-negative pressure state, dust is prevented from overflowing through the water spraying device, air pollution to the environment is greatly reduced, water is recycled through the water tank, and meanwhile noise is reduced through the sound insulation plate adopted by the sealing pipeline.

Description

Technical Field

[0001] The present invention relates to the field of construction waste recycling, and in particular to a negative pressure environmentally friendly production line for producing construction aggregates from construction waste. Background Art

[0002] At present, landfill is still the main method of disposing construction waste in my country. Developed countries abroad regard the resource utilization of construction waste as an important goal for achieving balanced economic and environmental development. The whole process of construction waste treatment is divided into four stages: "generation, transportation, intermediate treatment, recycling and reuse". Comprehensive management of construction waste is guaranteed by legal regulations. Compared with the huge amount of construction waste generated in my country, the industry space for the resource utilization of construction waste in my country has not been fully utilized. Although there are construction waste resource utilization enterprises that purchase construction waste from engineering contractors and transport it to related recycling enterprises for resource production, the production process and equipment are not yet perfect. The existing recycling equipment has defects such as high noise, high pollution, and high dust, which have a great impact on the environment. Therefore, it is indeed necessary for this field to develop a pollution-free negative pressure environmental protection production line with complete production process and equipment to produce construction aggregates from construction waste. Summary of the invention

[0003] The purpose of the present invention is to provide a negative pressure environmentally friendly production line for producing building aggregates from construction waste, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: a negative pressure environmental protection production line for producing building aggregates from construction waste is provided, and the negative pressure environmental protection production line for producing building aggregates from construction waste comprises: a primary crusher, an iron removal sorting machine, a screening machine, a secondary crusher, a magnetic separation screening machine, a sorting machine, a finished product warehouse, a sealed pipeline, an air pump, and a sprinkler; wherein the primary crusher is located at the front end of the entire production line, the inlet of the iron removal sorting machine is connected to the outlet of the primary crusher through a sealed pipeline, and the screening machine The inlet of the sorting machine is connected to the outlet of the iron removal sorting machine through a sealed pipe, the inlet of the secondary crusher is connected to the outlet of the screening machine through a sealed pipe, the magnetic screening machine is connected to the secondary crusher through two sealed pipes, one is the inlet of the magnetic screening machine connected to the outlet of the secondary crusher, and the other is the outlet of the magnetic screening machine connected to the return port of the secondary crusher, the inlet of the sorting machine is connected to the outlet of the magnetic screening machine through a sealed pipe, and the inlet of the finished product warehouse is connected to the outlet of the magnetic screening machine through three sealed pipes.

[0005] There are four vacuum pumps for generating negative pressure in the production system, which are respectively installed at the feed inlet of the entire production line, the finished product warehouse, between the screening machine and the secondary crusher, and between the secondary crusher and the magnetic separation screening machine.

[0006] The sprinkler device for dust removal in the production system includes a water trough and a water pipe, wherein the water trough is installed near the feed inlet, and the sprinkler device is connected to the entire production line through a water pipe, and sprinkler holes are distributed on the water pipe. The water sprinkled by the sprinkler device is recycled into the water trough through the production line, thereby achieving the recycling of water resources.

[0007] The sealed pipeline includes a specially made sound insulation board, a conveyor belt, and an outer wall; wherein the sound insulation board is made of special structure, material and specific density, which can both soundproof and prevent dust leakage. The sound insulation board is installed on the top, bottom and both sides of the inner side of the outer wall, and the conveyor belt is installed on the bottom of the inner side of the outer wall above the sound insulation board.

[0008] During operation, the raw materials are fed into the crusher by the loader, the primary crusher crushes the construction waste, and the primary crushed construction waste is transported to the iron removal sorting machine through the conveyor belt encapsulated in the pipe; the iron removal sorting machine removes iron impurities and sundries from the primary crushed construction waste, and transports the construction waste after iron impurities and sundries are removed to the screening machine through the conveyor belt encapsulated in the pipe, and the iron impurities and sundries are transported out through the outlet on the side of the iron removal sorting machine; after the screening machine receives the construction waste after iron impurities and sundries are removed, it screens the construction waste again to separate other impurities, and then transports the screened construction waste through the conveyor belt encapsulated in the pipe. The garbage is transported to the secondary crusher, and the separated impurities are transported out through the outlet on the side of the screening machine; the secondary crusher performs secondary crushing on the construction waste transported by the screening machine, and then transports the secondary crushed construction waste to the magnetic separation screening machine through the conveyor belt encapsulated in the pipe; the magnetic separation screening machine performs magnetic separation and screening on the secondary crushed construction waste, and transports the materials that meet the requirements to the sorting machine through the conveyor belt encapsulated in the pipe, and transports the materials that do not meet the standards back to the secondary crusher for further crushing; finally, the sorting machine separates the light materials and classifies the various materials produced through three conveyor belts and transports them to the warehouse. Beneficial Effects

[0009] 1. The entire production line achieves micro-negative pressure through four vacuum pumps and is covered with a sprinkler device, which reduces dust leakage and air pollution to the environment. The water tank is used to recycle water and reduce the waste of water resources;

[0010] 2. The production process and equipment of the construction waste recycling production line are relatively complete, which greatly improves the efficiency of construction waste recycling;

[0011] 3. The entire production line is in a sealed state, and sound insulation panels are installed inside the transport pipeline to ensure that no noise is generated during material transportation.

[0012] 4. The entire production line installs sound insulation panels inside the pipes, vacuum pumps to achieve micro-negative pressure, and sprinklers to prevent dust from spilling out, ensuring the physical and mental health of the workers on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structure diagram of the negative pressure environmentally friendly production line that produces building aggregates from construction waste;

[0014] Figure 2 This is a sealed pipeline structure diagram of a negative pressure environmentally friendly production line that produces building aggregates from construction waste;

[0015] Figure 3 This is a flow chart of a negative pressure environmentally friendly production line that produces construction aggregates from construction waste.

[0016] In the figure, 1. No. 2 vacuum pump; 2. Secondary crusher; 3. No. 3 vacuum pump; 4. Magnetic separation and screening machine; 5. Sealed pipeline; 6. Sorting machine; 7. No. 4 vacuum pump; 8. Finished product warehouse; 9. First-stage crusher; 10. Iron removal and sorting machine; 11. Screening machine; 12. No. 1 vacuum pump; 13. Sprinkler; 14. Sound insulation board; 15. Conveyor belt; 16. Outer wall of the pipeline. Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] The present invention is a negative pressure environmentally friendly production line for producing building aggregates from construction waste. Figure 1As shown, it includes a No. 2 vacuum pump 1, a secondary crusher 2, a No. 3 vacuum pump 3, a magnetic separation screening machine 4, a sealed pipe 5, a sorting machine 6, a No. 4 vacuum pump 7, a finished product warehouse 8, a primary crusher 9, an iron removal sorting machine 10, a screening machine 11, a No. 1 vacuum pump 12, and a sprinkler 13; the primary crusher 9 is the first equipment of the production line, which crushes the received construction waste into small pieces of materials and transports them to the iron removal sorting machine 10 through the sealed pipe 5; the iron removal sorting machine 10 is responsible for sorting out iron impurities and sundries in the materials, and transporting the remaining materials to the screening machine 11; the screening machine 11 screens The net separates impurities from the material and transports the remaining material to the secondary crusher 2; the secondary crusher 2 performs secondary crushing on the material to turn it into material that can be used for production, and transports the material to the magnetic separation and screening machine 4; the magnetic separation and screening machine 4 performs magnetic separation and screening on the material, and the material that meets the 3-30mm standard after screening is transported to the sorting machine 6, and the material larger than 30mm is transported back to the secondary crusher 2 through the return conveyor belt for further crushing; the sorting machine 6 separates the light materials, and the various materials produced are classified and transported to the finished product warehouse 8 through the sealed pipe 5 until there is no material with a size larger than 30mm.

[0019] like Figure 2 As shown, the sealed duct 5 includes a sound insulation board 14, a conveyor belt 15, and an outer wall 16; wherein the sound insulation board 9 is used to block the noise and dirty air from escaping.

[0020] The present invention is further characterized in that the structure between the components is:

[0021] The sorting machine 6 is also called a sifting and pulling type construction waste light material separation device, and a patent has been applied for, with the patent number: CN202220498374.0. This type of device for separating crushed construction waste light materials includes a driving sifting bucket motion system, a light material collection box, a light material separation brush, and a separation sifting bucket. The device imitates the principle of a dustpan, and the separation sifting bucket is connected to the driving sifting bucket motion system. When the motor of the driving sifting bucket motion system works, it drives the short rod to make a circular motion, and the long rod moves accordingly, thereby driving the separation sifting bucket to achieve up and down sifting, with a sifting angle of 0-30°, and sifting the construction waste light materials in the separation sifting bucket to the surface of the construction waste; the construction waste light materials on the surface are then pulled to the light material collection box below the separation sifting bucket by the light material separation brush, and the heavy materials are discharged by opening the baffle, so as to achieve the separation of construction waste light materials.

[0022] In the negative pressure environmental protection production line for producing construction aggregates from construction waste, a total of four vacuum pumps are installed on the entire production line, wherein the No. 1 vacuum pump 12 is installed near the feed inlet, the No. 2 vacuum pump 1 is installed between the screening machine 11 and the secondary crusher 2, the No. 3 vacuum pump 3 is installed between the secondary crusher 2 and the magnetic separation screening machine 4, and the No. 4 vacuum pump 7 is installed near the finished product warehouse 8; wherein the No. 1 vacuum pump, the No. 3 vacuum pump and the No. 4 vacuum pump are responsible for the periphery of the entire production line, so that the entire production line is maintained at a slightly negative pressure state of 0.06MPA, which means that 40% of the gas in the closed container can be extracted, and the remaining 60%, and the pressure difference with the external atmospheric pressure is (where 100 is the outside atmospheric pressure) That is, its negative pressure value is: -60Kpa, which is displayed as -0.06Mpa on the commonly used vacuum gauge; the second vacuum pump is responsible for the production line equipment and pipelines, so that the entire production line is maintained at a slight negative pressure of 0.05MPA, which means that 50% of the gas in the closed container can be pumped out, and the remaining 50% has a pressure difference with the external atmospheric pressure. (where 100 is the outside atmospheric pressure) That is, its negative pressure value is: -50Kpa, which is displayed as -0.05Mpa on a commonly used vacuum gauge, so that the air pressure of the entire production line is lower than the atmospheric pressure, and the internal air pressure is lower than the production line pressure. Through double micro-negative pressure, dust is prevented from leaking, and negative pressure state is achieved through intelligent control.

[0023] The sprinkler device 13 for dust removal in the production system includes a water trough and a water pipe, wherein the water trough is installed near the feed inlet, and the sprinkler device is connected to the entire production line through a water pipe. The water pipe is provided with sprinkler holes to ensure that the dust in the production line will not be raised during the production process, and the water sprinkled by the sprinkler device combines with the dust to form wet soil, which enters the production line, and is separated into dry and wet parts in the production line. The dust solidifies and becomes raw materials, and the water is recycled into the water trough through the water pipe on the production line, so as to achieve the recycling of water resources.

[0024] The primary crusher 9 is connected to the iron removal sorter 10 via a sealed pipe 5 ; the iron removal sorter 10 is connected to the screening machine 10 via a sealed pipe 5 ; the screening machine 11 is connected to the secondary crusher 2 via a sealed pipe 5 .

[0025] The secondary crusher 2 and the magnetic separation and screening machine 4 are connected by two sealed pipes 5, one of which is responsible for transporting materials from the secondary crusher 2 to the magnetic separation and screening machine 4, and the other is responsible for transporting materials that do not meet the standards from the magnetic separation and screening machine 4 back to the secondary crusher 2.

[0026] The magnetic separation screening machine 4 and the separator 6 are connected via a sealed pipe 5; the separator 6 and the finished product warehouse 8 are connected via three sealed pipes 5, and the three sealed pipes 5 transport light materials through two pipes and heavy materials through one pipe to transport the materials to the finished product warehouse 8.

[0027] The implementation process of the present invention (see attached Figure 3 The flow chart consists of seven parts:

[0028] S1: The construction waste raw materials are fed into the primary crusher through the raw material loader, and the primary crusher is crushed;

[0029] S2: The primary crusher transports the primary crushed materials to the iron removal sorting machine through a conveyor belt encapsulated in the pipeline, and the iron removal sorting machine performs sorting;

[0030] S3: The iron removal sorting machine transports the sorted materials to the screening machine through a conveyor belt encapsulated in the pipeline, and the screening machine performs screening;

[0031] S4: The screening machine transports the screened materials to the secondary crusher through a conveyor belt encapsulated in the pipeline, and the secondary crusher performs secondary crushing;

[0032] S5: The secondary crusher transports the secondary crushed materials to the magnetic separation screening machine through a conveyor belt encapsulated in the pipeline, and the magnetic separation screening machine performs magnetic separation and screening;

[0033] S6: The magnetic screening machine transports the materials that meet the standards after magnetic screening to the separator through the conveyor belt encapsulated in the pipeline, and transports the materials that do not meet the standards back to the secondary crusher;

[0034] S7: The sorting machine separates the materials and transports the separated materials to the finished product warehouse through three conveyor belts.

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A negative pressure environmentally friendly production line for producing building aggregates from construction waste, characterized by: It includes a primary crusher, an iron removal sorting machine, a screening machine, a secondary crusher, a magnetic separation screening machine, a sorting machine, a finished product warehouse, a sealed pipe, an air pump, and a sprinkler; the primary crusher mainly functions to crush construction waste; the iron removal sorting machine mainly functions to remove iron impurities and debris in construction waste; the screening machine mainly functions to separate impurities in materials; the secondary crusher mainly functions to crush construction waste for the second time; the magnetic separation screening machine mainly functions to magnetically separate and screen materials into materials that meet the standards and materials that do not meet the standards; the sorting machine mainly functions to separate light materials and classify and transport various materials produced.

2. The negative pressure environmentally friendly production line for producing building aggregates from construction waste according to claim 1 is characterized in that: The sorting machine and the finished product warehouse are connected by three sealed pipes, and the three sealed pipes transport light materials through two pipes and transport heavy materials through one pipe to transport the materials to the finished product warehouse.

3. The negative pressure environmentally friendly production line for producing building aggregates from construction waste according to claim 1 is characterized in that: The sealed pipeline includes a sound insulation board, a conveyor belt, and an outer wall; wherein the sound insulation board is used for blocking noise and dirty air from leaking out.

4. The negative pressure environmentally friendly production line for producing building aggregates from construction waste according to claim 1 is characterized by: In the negative pressure environmental protection production line for producing construction aggregates from construction waste, a total of four vacuum pumps are installed on the entire production line, of which No. 1 vacuum pump is installed near the feed inlet, No. 2 vacuum pump is installed between the screening machine and the secondary crusher, No. 3 vacuum pump is installed between the secondary crusher and the magnetic separation screening machine, and No. 4 vacuum pump is installed near the finished product warehouse; among them, No. 1 vacuum pump, No. 3 vacuum pump and No. 4 vacuum pump are responsible for the periphery of the entire production line, so that the entire production line is maintained at a slightly negative pressure state of 0.06MPA, which means that 40% of the gas in the closed container can be extracted, and the remaining 60%, and the pressure difference with the external atmospheric pressure is (where 100 is the outside atmospheric pressure) That is, its negative pressure value is: -60Kpa, which is displayed as -0.06Mpa on the commonly used vacuum gauge; the second vacuum pump is responsible for the production line equipment and pipelines, so that the entire production line is maintained at a slight negative pressure of 0.05MPA, which means that 50% of the gas in the closed container can be pumped out, and the remaining 50% has a pressure difference with the external atmospheric pressure. (where 100 is the outside atmospheric pressure) That is, its negative pressure value is: -50Kpa, which is displayed as -0.05Mpa on a commonly used vacuum gauge, so that the air pressure of the entire production line is lower than the atmospheric pressure, and the internal air pressure is lower than the production line pressure. Through double micro-negative pressure, dust is prevented from leaking, and negative pressure state is achieved through intelligent control.

5. The negative pressure environmentally friendly production line for producing building aggregates from construction waste according to claim 1 is characterized in that: The secondary crusher and the magnetic separation screen are connected by two sealed pipes, one is responsible for transporting materials from the secondary crusher to the magnetic separation screen, and the other is responsible for transporting materials larger than 30 mm from the magnetic separation screen back to the secondary crusher.

6. The negative pressure environmentally friendly production line for producing building aggregates from construction waste according to claim 1 is characterized by: The sprinkler device for dust removal in the production system includes a water trough and a water pipe, wherein the water trough is installed near the feed inlet, and the sprinkler device is connected to the entire production line through a water pipe. The water pipe is provided with sprinkler holes to ensure that dust in the production line will not be raised during the production process, and the water sprinkled by the sprinkler device combines with the dust to form wet soil, which enters the production line, and is separated into dry and wet parts in the production line. The dust solidifies and becomes raw material, and the water is recycled into the water trough through the water pipe on the production line, so as to achieve the recycling of water resources.

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