Building waste recycled aggregate air compression system

Abstract

The utility model provides a construction waste recycled aggregate air compression system which comprises an air compressor, an air storage tank, a coarse filter, a drying machine, a fine filter and an air using point which are sequentially connected through a compressed air pipeline, and the two sides of the air compressor are connected with a flow guide air pipe and an air suction device chamber respectively. Air in the atmosphere is introduced into the air suction device chamber through the flow guide air pipe, and the air suction device chamber is connected to the air cylinder. Reasonable plant layout conforming to the system is provided, and the gas treatment efficiency is greatly improved; the problems that the pressure of high-pressure gas is not stable and new impurities are carried in long-distance transportation due to the fact that the distance between an air compression station and a gas using point in a factory area is too long are solved by adopting a relay gas storage tank and a static electricity mode, the follow-up possible problems are reduced, and the working efficiency is improved; and an electric overhauling hoist is arranged for the air compressor, so that the operation during overhauling is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of construction waste pretreatment, and in particular to an air compression system for recycled aggregates from construction waste. Background Technology

[0002] Construction waste, a major type of urban solid waste, can be used to produce recycled aggregates. In recent years, under the goal of "peak carbon and carbon neutrality," the recycling rate of construction waste in China has been continuously improving, and the processing methods are becoming more intensive and large-scale. In the process of processing recycled aggregates from construction waste, the compressed air system, as a major auxiliary project, mainly provides power for dust removal, blowing, and pneumatic conveying of powders in the crushing, screening, transfer, and storage processes. It also serves as the power source for pneumatic components.

[0003] The current design, based on the project's process requirements regarding air consumption, pressure, and quality, determines the type and parameters of air compressors and post-processing equipment for system design. Although a complete process flow has been established, several problems remain. First, regulations stipulate that the maximum temperature in the machine room must be below 40 degrees Celsius. Excessive temperatures lead to decreased air compressor efficiency, and traditional cooling methods, which cool the entire plant, are inefficient and result in prolonged use of refrigeration units, contradicting the principle of "carbon peaking and carbon neutrality." Second, leaks in the compressed air system significantly impact power consumption, but traditional detection methods are inefficient and cannot quickly locate the problem; sometimes, by the time a leak is detected, it may have been leaking for some time. Third, excessively long distances between the compressed air station and consumption points in the plant area lead to uneven air supply distribution, posing potential hazards to the transport pipelines and potentially rendering previous compressed air processing efforts futile. Finally, unreasonable system design, improper selection of air pipelines, or inappropriate post-processing equipment also contribute to significant power consumption. Finally, the maintenance of the air compressor is also an important part. After working for a long time, air compressors will inevitably encounter some problems, and an efficient method is needed to check and troubleshoot these problems.

[0004] Therefore, in order to improve the energy saving and efficiency of air compression of recycled construction waste aggregates, it is urgent to develop an environmentally friendly and efficient air compression system for recycled construction waste aggregates. Utility Model Content

[0005] The purpose of this utility model is to provide an air compression system for recycled aggregates from construction waste that solves the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides an air compression system for recycled aggregates from construction waste, including an air compressor, an air storage tank, a coarse filter, a dryer, a fine filter, and an air consumption point connected in sequence through compressed air pipes. The air compressor is connected to a guide duct and an air intake chamber on both sides, and air from the atmosphere is introduced into the air intake chamber through the guide duct. The air intake chamber is connected to a cylinder.

[0007] Furthermore, an ultrafine filter and a relay gas storage tank are sequentially arranged between the fine filter and the gas consumption point. The relay gas storage tank includes a gas storage space, an electrostatic chamber, and a spiral pipe for connecting the gas storage space and the electrostatic chamber.

[0008] Furthermore, one side of the electrostatic chamber is equipped with an electrostatic generator, which is connected to a modular compressed air pipeline inside the electrostatic chamber via wires.

[0009] Furthermore, insulating gaskets are added between the modular compressed air pipes.

[0010] Furthermore, several air compressors are placed in the compressed air station, ventilation fan units are installed above the central axis of the compressed air station, and refrigeration equipment is installed below the central axis of the compressed air station.

[0011] Furthermore, an electric maintenance hoist is installed above the air compressor. The electric maintenance hoist includes a motor, a reducer and coupling, and a drum device. The reducer and coupling are used to connect the motor and the drum device. The drum device is used to wind the wire rope. The drum device is connected to the control box, which controls the hoist's lifting and lowering.

[0012] Furthermore, one end of the wire rope is fixed to the drum device, and the other end is connected to the hook device, with limiters installed at both the upper and lower ends of the wire rope.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. A separate air duct was designed for the air compressor, reducing the demand on refrigeration equipment and thus reducing energy consumption;

[0015] 2. When the distance between the air compressor station and the air consumption point in the factory area is too long, an intermediate air storage tank is set up between the air compressor station and the air consumption point to balance the pressure. At the same time, static electricity is applied to adsorb dust, which further ensures the quality of compressed air and guarantees the stability of the system.

[0016] 3. Electric maintenance hoists were installed on the air compressor, the most important machine, to assist workers in maintenance and improve work efficiency. Attached Figure Description

[0017] Figure 1This is a process layout diagram of the compressed air station building according to this utility model.

[0018] Figure 2 This is a schematic diagram of the separate heat dissipation air duct of the air compressor of this utility model.

[0019] Figure 3 This is a PWM fan control logic diagram for a separate heat dissipation duct in this utility model.

[0020] Figure 4 This is a process flow diagram of the present invention.

[0021] Figure 5 This is a side view of the individual air duct of the air compressor of this utility model.

[0022] Figure 6 This is a cross-sectional view of the relay gas storage tank of this utility model.

[0023] Figure 7 This is a detailed drawing of the compartment of this utility model.

[0024] In the diagram: 1. Air duct; 2. Air compressor; 3. Compressed air pipeline; 4. Air tank; 5. Coarse filter; 6. Dryer; 7. Fine filter; 8. Ultrafine filter; 9. Intermediate air tank; 10. Air consumption point; 11. Check valve; 12. Shut-off valve; 13. Regulating valve; 14. Multifunctional temperature sensor; 15. Refrigeration equipment; 16. Ventilation fan assembly; 17. Intake fan assembly; 18. Electric maintenance hoist; 19. Exhaust fan assembly; 20. Airflow; 21. Aluminum single-layer louver; 22. Compartment. 23. Central axis; 24. Spiral duct; 25. Static electricity chamber; 26. Static electricity generator; 27. Wire; 28. Insulating gasket; 29. ​​Modular compressed air duct; 30. Air storage space; 31. Guide duct joint; 32. Intake valve; 33. Intake device chamber; 34. Cylinder; 35. Instrument panel; 36. Internal cooling system of air compressor; 37. Motor; 38. Reducer and coupling; 39. Control box; 40. Drum device; 41. Limit switch; 42. Hook device; 43. Wire rope; 44. Hoist base; 45. Bottom drain valve; 46. Condenser fins. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0026] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0028] like Figures 1-7 As described above, this utility model provides an air compression system for recycled aggregates from construction waste, such as... Figure 1 and Figure 7 As shown, after starting air compressor 2, the air compressor's intake valve opens, introducing air from the atmosphere through the duct 1. The intake device in the intake chamber 33 draws the air into the compressor's cylinder 34. As the intake device operates, the gas in cylinder 34 is gradually compressed. Once the compressed gas reaches a certain pressure, the exhaust valve opens, and the gas is discharged from the air compressor. The gas is then transported to subsequent equipment via compressed air pipelines. A regulating valve 13 is required when the compressed air pipeline connects to air compressor 2 to ensure stable air pressure, thus protecting the stability of the entire system. It is important to note that before starting the air compressor, the operator must be familiar with its structure, performance, and purpose; understand its operation and maintenance methods; and check the condition of all components and connections. Any abnormalities should be repaired immediately. The operator should also confirm that the pressure gauge, safety valve, and pressure regulator on the instrument panel 35 are in good working order, check the lubricating oil level, and ensure that the cooling system 36 inside the air compressor is functioning correctly. After starting air compressor 2, it is necessary to ensure that its no-load readings are normal before starting load operation. As for the air duct 1, the fabrication of the duct should be carried out in accordance with the design specifications and requirements. The dimensions of each part, the angle of the bends, etc. should meet the design requirements. Special tools should be used for measurement and verification. The joints 31 of the air duct should be sealed using sealant, tape or special sealing gaskets.

[0029] Example 3

[0030] like Figure 1As shown, compressed air is compressed by air compressor 2 and then transported to air storage tank 4 through compressed air pipeline 3. Air storage tank 4 serves to stabilize air pressure, reduce fluctuations, cool the gas, and remove moisture and oil. When compressed air flows through air storage tank 4, the high-speed airflow generated by air compressor 2 collides with the inner wall of air storage tank 4, forming a confluence that rapidly lowers the temperature, condensing moisture and oil from the air, which is then periodically discharged from the drain valve 45 at the bottom. Simultaneously, air storage tank 4 also acts as a buffer, stabilizing the compressed air pressure and reducing pressure changes caused by fluctuations in air consumption. Once the air pressure stabilizes, the gas in air storage tank 4 can be transported to subsequent devices through compressed air pipeline 3.

[0031] The air storage tank 4 requires regular inspection and maintenance. Residual oil droplets and dust must be removed periodically to prevent these impurities from affecting the efficiency and function of subsequent machines and the compressed air pipeline 3. A regulating valve 13 must be installed when the compressed air pipeline 3 connects to the air storage tank 4 to ensure stable air pressure and protect the stability of the entire system. Considering the overall air consumption of the construction waste recycling aggregate plant, the air storage tank 4 can be selected based on 0.1 to 0.3 times the exhaust capacity of the air compressor.

[0032] Example 4

[0033] like Figure 1 As shown, the temperature of the compressed air after pretreatment by the air tank 4 is reduced. However, since the compressed air source comes from the atmosphere, it contains many impurities of various sizes. These impurities can accumulate or damage the instruments and compressed air pipeline 3 in subsequent processes. Therefore, coarse filtration is required in the coarse filter 5. The coarse filter 5 first removes larger particles in the air, such as dust, oil, rust, and moisture. Secondly, it removes residual fine particles and oil mist. At the same time, it removes some liquid water and oil mist by relying on the small vortex generated by the compressed air. Finally, the compressed air is transported from the compressed air pipeline 3 to the dryer 6.

[0034] The coarse filter 5 requires regular inspection and maintenance. This includes periodic cleaning and replacement of the internal filter element, as well as regular removal of residual oil droplets, dust, and other impurities to prevent these impurities from affecting the efficiency and functionality of downstream machines and pipelines. When the compressed air pipeline 3 connects to the coarse filter 5, a regulating valve 13 is required to ensure stable air pressure and protect the stability of the entire system.

[0035] Example 5

[0036] like Figure 1As shown, since compressed air generally originates from the surrounding environment, and the air in the natural environment is unsaturated, when the air reaches saturation after being compressed by the air compressor 2 with a constant moisture content, water vapor will condense in the air. To prevent the moisture in the compressed air from corroding the pipes and valves, the compressed air needs to be dried and purified. Therefore, the compressed air needs to be dried by the dryer 6. In the dryer 6, the compressed air is first pre-treated by pre-cooling the high-temperature air, and then evaporated to condense water vapor into droplets, which are then separated from the air, thereby reducing the absolute moisture content. After that, it undergoes adsorption drying, where the compressed air flows through a desiccant, which absorbs the moisture in the air, finally resulting in dry air. The dried air flows from the dryer 6 through the compressed air pipe 3 to the fine filter 7.

[0037] Simultaneously, the dryer 6 needs to be inspected and maintained regularly. Dust and impurities inside and outside the dryer 6 should be cleaned periodically to prevent damage. The surface of the condenser fins 46 should be cleaned or wiped with dry compressed air to prevent dust blockage. The bearings, chains, gears, and other components of the dryer 6 should be lubricated regularly to reduce wear and noise. The filter elements and screens of the dryer 6 should be replaced regularly to maintain normal operation and extend its service life. A regulating valve 13 should be installed when the compressed air pipeline 3 connects to the dryer 6 to ensure stable air pressure and protect the stability of the entire system.

[0038] Example 6

[0039] like Figure 1 As shown, after compressed air is delivered from dryer 6 to fine filter 7, fine filter 7 further purifies the compressed air, removing particles larger than 0.01μm and oil mist, ensuring the cleanliness of the compressed air. Through physical interception and adsorption, fine filter 7 can significantly reduce the oil content in the compressed air. It also has internal features to help the agglomeration of droplets and impurities, which are discharged automatically or manually. The droplets and impurities accumulated on the surface of the filter element settle to the bottom of the filter under gravity and are discharged through the drain. Therefore, the compressed gas after being filtered by fine filter 7 is further filtered to high-purity air to meet the next step requirements.

[0040] The fine filter 7 requires regular inspection and maintenance. This includes periodic cleaning and replacement of the internal filter element, as well as regular removal of residual oil droplets, dust, and other impurities to prevent these impurities from affecting the efficiency and functionality of subsequent machines and pipelines. Furthermore, the compressed air pipeline 3, when connected to the fine filter 7, requires a regulating valve 13 to ensure stable air pressure and protect the stability of the entire system.

[0041] Example 7

[0042] like Figure 1 As shown, compressed air purified by the fine filter 7 is transported to the ultrafine filter 8 through the compressed air pipeline 3. The ultrafine filter 8 can remove even smaller particles and oil droplets, with a filtration accuracy typically below 0.01μm. Compressed air flows through a filter element made of borosilicate glass fiber. Extremely fine water droplets, oil droplets, and solid particles as small as 0.01μm are separated by the extremely fine fiber structure of the filter media. The ultrafine filter 8 can filter out almost all water, oil, and dust in the compressed air, ensuring the dryness and cleanliness of the compressed air. Fine particles agglomerate and form larger particles on the fiber web, which then drip down due to gravity, achieving even higher removal efficiency. The ultrafine filter 8 has an extremely high filtration efficiency, typically reaching 99.9999%, ensuring that the quality of the compressed air meets high-quality process requirements.

[0043] The ultrafine filter 8 requires regular inspection and maintenance. Its internal filter element needs periodic cleaning and replacement, and residual oil droplets and dust need to be removed regularly to prevent these impurities from affecting the efficiency and function of downstream machines and pipelines. When the compressed air pipeline 3 connects to the ultrafine filter 8, a regulating valve needs to be installed to ensure stable air pressure and protect the stability of the entire system.

[0044] Example 8

[0045] like Figure 1 and Figure 6 As shown, after the compressed air passes through the ultrafine filter 8, it meets the high-quality requirements and is therefore transported to the air consumption point through the compressed air pipeline 3. When the air pipeline 3 is connected to the machine, a regulating valve 13 and a check valve 11 need to be installed to ensure stable air pressure. When the air compressor station in the factory area and the air consumption point 10 are close, the air can be directly transported to the air consumption point 10.

[0046] When the distance between the air compressor station and the air consumption point 10 in the factory area is too long, long-distance transportation will cause the pressure of the high-pressure gas to be unstable. At the same time, some other small particles such as rust powder and other impurities in the pipeline may be carried into the compressed air. Therefore, a relay air storage tank 9 can be set up between the air compressor station and the air consumption point 10 in the factory area to balance the pressure. After the compressed air is transported from the factory area to the relay air storage tank 9, it first passes through the air storage space 30 in the relay air storage tank 9 to balance the pressure. Then the compressed air will be transported to the electrostatic precipitator 25 through the spiral pipe 24. The spiral pipe 24 has a vertical spiral design, which allows the compressed air to have more contact area. Dust and powder that may be carried during long-distance transportation can be dropped off by its own weight through the spiral design.

[0047] After compressed air is delivered to the electrostatic chamber 25 in the relay air tank 9, the electrostatic generator 26, which is always in operation, transmits current through the modular compressed air pipe 29 via the wire 27. To prevent the current from affecting the entire system by passing through the metal compressed air pipe, an insulating gasket 28 is added between the modular compressed air pipe 29 and the compressed air pipe 3 to isolate the current. Thanks to the modular design and the openable electrostatic chamber 25, the modular compressed air pipe 29, which has accumulated many impurities due to electrostatic adsorption, can be replaced at any time.

[0048] Example 9

[0049] like Figure 1 and Figure 5 As shown, the maximum ambient temperature in the machine room should not exceed 40℃ when the compressed air station is operating. Excessive temperature not only affects the performance of the air compressor but also other machines. Therefore, reasonable cooling measures should be taken in the station building. Ventilation fan group 16 can be used to eliminate indoor residual heat. When mechanical ventilation cannot eliminate indoor residual heat, a single-cooling unit can be installed to dissipate heat according to the indoor heat generation. The aluminum single-layer louvers 21 arranged on both sides of the factory building facilitate air convection between the inside and outside of the factory building, promoting heat dissipation. The ventilation fan group 16 is installed above the central axis 23 of the factory building because hot air rises. The refrigeration equipment 15 is located below the central axis 23, allowing it to quickly spread cool air around the machines below. The aluminum single-layer louvers also provide dust and water protection. Furthermore, aluminum is lightweight and resistant to corrosion, making it an excellent window material.

[0050] Example 10

[0051] For a single air compressor with a rated volumetric flow rate exceeding 20m³ / h 3 / min or total installed capacity exceeding 60m 3 For compressed air stations with a capacity of 18 cubic meters per minute, electric maintenance hoists are recommended, with lifting capacity sufficient to lift the largest maintenance component of the air compressor. For construction waste recycling plants, air consumption is concentrated around 20 cubic meters per minute, depending on the size of the plant. 3 / min~200m 3 When the air consumption is stable with minimal fluctuations, a screw air compressor should be selected; for working environments with high exhaust pressure requirements and low air volume, a reciprocating air compressor should be selected; and for enterprises that require concentrated air consumption and large air volume, a centrifugal air compressor should be selected.

[0052] Example 11

[0053] When machines are running in the factory, leaks are sometimes unavoidable due to issues such as air pressure problems and aging of compressed air pipelines. To address this, intelligent airtightness detection can be employed, using acoustic imaging equipment. Equipped with a series of microphones to expand the inspection range, it allows the maintenance team to quickly and accurately locate air, gas, and vacuum leaks in the compressed air system, unaffected by the noise from the machinery in the factory. The acoustic imaging equipment can perform visual scanning of large areas from 50 meters away. Workers are scheduled to use this equipment to monitor the pipelines in the factory during the last hour and a half of the day before the factory closes for work. At this time, the pipelines are at their weakest after a full day of operation, and the equipment can clearly detect the specific location of leaks. This equipment can find the problem area quickly, allowing for early detection and repair by maintenance and repair workers after the factory closes for work, thus preventing disruption to the next day's operations.

[0054] Example 12

[0055] A factory used acoustic imaging equipment to scan a large area of ​​the factory. Compared with traditional detection methods, this method successfully avoided 21% of leakage accidents in the same time period, saved 24% of energy consumption for producing the same amount of high-pressure air, and saved 40% of the time in the monitoring process compared with traditional methods, while also having high accuracy.

[0056] Example 13

[0057] Compressed air pipeline 3 is installed in a network pattern within the plant area. Check valves 11 and shut-off valves 12 are installed at each branch point of the network. A regulating valve 13 is installed at the air inlet of each piece of equipment to facilitate the checking of hydraulic imbalance. The compressed air pipeline network should preferably be laid overhead, and the network form can be a ring network or a branch network. The pipeline installation must have a downstream drainage slope of not less than 0.02‰, sloping towards the air storage tank or drainage point. The connection between branch pipes and main pipes generally uses angles of 90°, 60°, 30°, etc., to reduce local pipeline resistance.

[0058] Example 14

[0059] A compressed air station can utilize multiple air compressors operating in tandem. If conditions permit, variable frequency models can be used, and a centralized controller should be installed to automatically adjust the number of operating compressors based on load demand changes. Flow meters and pressure sensors should be installed in the system pipelines to record load and pressure changes, and the number of air compressors in operation should be controlled according to actual operating conditions. The supply air pressure should be reduced as much as possible while meeting the process and usage requirements of the air consumption points.

[0060] Example 15

[0061] When selecting an air compressor, the model should be chosen based on the process load requirements to reduce the compressor's idle time. Priority should be given to green, energy-efficient air compressors with a first-class energy efficiency rating. If a model of 110kW or higher is selected, a two-stage compression screw air compressor is recommended. For post-treatment, refrigerated dryers or heated regenerative adsorption dryers should be preferred. The size of the compressed air filter and dryer should be increased by at least one or two models.

[0062] Example 16

[0063] Compressed air pipeline 3 should preferably use rust-resistant materials, such as stainless steel pipes and plastic-lined pipes. Compressed air pipeline 3 should ideally be designed as a ring network, with the main pipe diameter increased by one or two sizes. This ensures stable air supply, eliminates the need to modify the main pipeline network when process requirements increase or expansion occurs, reduces pressure drop, maintains pressure at distant points, lowers compressor discharge pressure, and reduces energy consumption. Increased pipeline capacity also acts as a buffer and stabilizer during load changes. Simultaneously, the scale of the compressed air pipeline network should not be excessively large. An excessively large network increases system pressure, leads to increased leakage, and reduces operating efficiency. Compressed air stations can be set up in different areas based on the plant's air consumption.

[0064] Example 17

[0065] For air compressors with higher power, it is recommended to choose models with soft start or variable frequency start to reduce the starting current.

[0066] Example 18

[0067] During construction, relevant specifications must be strictly followed, and pressure and leakage tests must be conducted as required to prevent leaks in the pipeline system. During the operational period, leak detection equipment should be used to periodically inspect the compressed air pipelines.

[0068] Example 19

[0069] like Figure 2As shown, to solve the problems of heat dissipation difficulties, high-temperature shutdown, and efficiency reduction of air compressor 2 under excessively high temperatures, this utility model proposes to house air compressor 2 in a separate compartment 22, along with an intake fan assembly 17 and an exhaust fan assembly 16 for auxiliary heat dissipation, thus forming a separate heat dissipation duct for air compressor 2. Compartment 22 isolates air compressor 2 from other machines. The intake fan assembly 17 and exhaust fan assembly 16 are respectively installed on the wall of the compartment near the outer side of the factory area. The intake fan assembly 17 is used to draw in cold air from outside the factory area, while the exhaust fan assembly 16 is used to exhaust the heated cold air within the compartment. The cold air, under the positive and negative pressure of the fans, forms an airflow 20 within compartment 22. The heat generated by air compressor 2 heats the incoming cold air through thermal radiation, and driven by the airflow, the hot air is exhausted to the outside through exhaust fan assembly 16. Simultaneously, according to the principle of thermal expansion and contraction of air, hot air is lighter than cold air. Therefore, the intake fan assembly 17 needs to be installed below the central axis of the outer wall of compartment 22, while the exhaust fan assembly 16 needs to be installed above the central axis of the wall. It should be noted that in extreme weather conditions, such as when the outdoor temperature exceeds 40°C, this heat dissipation mode may still not meet the requirements, and low-energy-consuming cooling equipment still needs to be installed in the compartment.

[0070] Example 20

[0071] like Figure 3 As shown, the fan speeds of the intake fan assembly 17 and the exhaust fan assembly 16 can be controlled by a computer using pulse width modulation (PWM) technology. The real-time temperature within the compartment 22 is transmitted to the computer terminal via temperature sensor 14. The computer then calculates the specific fan speed and intake volume based on a formula. The formula is...

[0072]

[0073] Where: P is the ventilation volume; Q is the sensible heat generation in the compressed air station, obtained by temperature sensor 14; C is the specific heat of air; ρ is the air density; t p Calculate the temperature for indoor exhaust air; t s is the air supply temperature; n is the number of fans.

[0074] According to the above formula, the computer can determine whether the temperature exceeds 40℃ and then make a corresponding judgment. When overheating occurs, it will calculate the exhaust temperature using the formula, and then deduce the required airflow and speed based on the fan parameters. Based on the speed, it will calculate the required voltage and then use PWM technology to change the duty cycle of the pulse signal to simulate voltage changes, thereby increasing the fan speed and increasing the airflow. It should be noted that in extreme weather conditions, such as when the outdoor temperature exceeds 40℃, this cooling mode may still not be sufficient, and low-energy-consumption cooling equipment will still need to be installed inside the compartment.

[0075] Example 21

[0076] A factory uses a single-compartment air compressor cooling method. Compared with the traditional cooling method, the average operating time of the refrigeration equipment is shortened by 30%, the energy saving rate reaches 25%, and there is almost no impact on the performance of the air compressor.

[0077] Example 22

[0078] like Figure 7 As shown, the air compressor 2 is the most important machine in the entire system and is in a state of long-term operation. Over time, some problems are bound to occur. These problems may lead to a decrease in the working efficiency of the entire system or even shutdown. Therefore, it is necessary to inspect and maintain it frequently. Thus, an electric maintenance hoist 18 needs to be installed above the air compressor 2 to help with maintenance. For some heavy structures and accessories, the hoist 18 can save labor costs and has a higher maintenance efficiency.

[0079] Example 23

[0080] like Figure 7 The electric maintenance hoist 18 shown is mounted on the ceiling of the compartment via a hoist base 44. The electric maintenance hoist 18 includes a motor 37, a reducer and coupling 38, a drum device 40, a wire rope 43, a hook device 42, a control box 39, and a limit switch 41. The motor 37 provides power to the hoist 18. The reducer and coupling 38 are directly connected to the motor 37, converting the high-speed rotation of the motor 37 into the required low-speed, high-torque output. The reducer reduces the speed of the motor 37 and increases the output torque to meet the lifting and operation requirements of the electric maintenance hoist 18. The reducer connects the motor 37 and the drum device 40 via gear or chain drive. The drum device 40 is the core component of the electric hoist 18, used to wind the wire rope 43. The rotation of the drum device 40 achieves the lifting and lowering of the load. The drum device 40 is directly connected to the control box 39, which controls the lifting and lowering of the hoist. One end of the wire rope 43 is fixed to the drum device 40, and the other end is connected to the hook device 42. The rotation and unwinding of the drum drives the hook device 42 to operate. The hook device 42 is connected to the drum device 40 through the wire rope 43 and is the direct load-bearing component for lifting heavy objects. The limit switch 41 ensures that the electric hoist 18 automatically stops when it reaches the maximum or minimum stroke to prevent overwinding or over-lowering.

[0081] When it is necessary to inspect the parts inside the air compressor, first turn on the switch of the electric inspection hoist 18. The motor 37 will start, and then the rotation of the motor 37 will drive the drum in the drum device 40 and the wire rope 43 to descend after being converted by the reducer and coupling 38. The hook device 42 will also descend as the wire rope 43 is loosened. When selecting the electric hoist 18, the limit switch 41 needs to be selected to avoid the lowering limit distance being too low. Then, the worker hooks the hook of the hook device 42 onto the part that needs to be inspected and lifts it up, so that the part can be transferred out of the air compressor for maintenance.

[0082] When operating and using this utility model, the following steps can be followed:

[0083] S1. Collect external gas and compress the gas;

[0084] S2, removes water and oil;

[0085] S3, coarse filtration;

[0086] S4, dry gas;

[0087] S5, fine filtration;

[0088] S6, ultra-fine filtration;

[0089] S7. Deliver the gas to the point of use.

[0090] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. An air compression system for recycled aggregate from construction waste, characterized in that: It includes an air compressor (2), an air tank (4), a coarse filter (5), a dryer (6), a fine filter (7), and an air consumption point (10) connected in sequence through a compressed air pipe (3). The air compressor (2) is connected to a guide pipe (1) and an air intake chamber (33) on both sides respectively. Air from the atmosphere is introduced into the air intake chamber (33) through the guide pipe (1). The air intake chamber (33) is connected to a cylinder (34).

2. The air compression system for recycled aggregate from construction waste according to claim 1, characterized in that: An ultrafine filter (8) and a relay gas storage tank (9) are sequentially arranged between the fine filter (7) and the gas consumption point (10). The relay gas storage tank (9) includes a gas storage space (30), an electrostatic chamber (25), and a spiral pipe (24) for connecting the gas storage space (30) and the electrostatic chamber (25).

3. The air compression system for recycled aggregate from construction waste according to claim 2, characterized in that: The electrostatic chamber (25) has an electrostatic generator (26) on one side, which is connected to the modular compressed air pipe (29) in the electrostatic chamber (25) via a wire (27).

4. The air compression system for recycled aggregate from construction waste according to claim 3, characterized in that: An insulating gasket (28) is added between the modular compressed air pipe (29) and the compressed air pipe (3).

5. The air compression system for recycled aggregate from construction waste according to claim 1, characterized in that: Several air compressors (2) are placed in the compressed air station, ventilation fan group (16) is installed above the central axis (23) of the compressed air station, and refrigeration equipment (15) is installed below the central axis (23) of the compressed air station.

6. The air compression system for recycled aggregate from construction waste according to claim 1, characterized in that: An electric maintenance hoist (18) is mounted above the air compressor (2). The electric maintenance hoist (18) includes a motor (37), a reducer and coupling (38), and a drum device (40). The reducer and coupling (38) are used to connect the motor (37) and the drum device (40). The drum device (40) is used to wind the wire rope (43). The drum device (40) is connected to the control box (39). The control box (39) controls the hoist's lifting and lowering.

7. The air compression system for recycled aggregate from construction waste according to claim 6, characterized in that: One end of the wire rope (43) is fixed to the drum device (40), and the other end is connected to the hook device (42). Limiters (41) are provided at both the upper and lower ends of the wire rope (43).

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