An oil-free screw air compressor

Abstract

The present invention discloses an oil-free screw air compressor, including a base, a protective cover fixed on the upper end surface of the base, an air compression component, a gas-liquid separation component and a cooling component installed on the upper end surface of the base, an air distribution component installed on the upper end surface of the air compression component, and an air filter component installed on the upper end surface of the air distribution component; the air compression component includes a shock absorbing damper fixed on the upper end surface of the base. In the present invention, the air compressor is provided with an air distribution cylinder at the air inlet end, which can make its gas uniformly sent into the compressor, improve the consistency of the gas density of the air compression, and at the same time, an air filter component for filtering air is provided, which can effectively filter the particulate impurities in the gas, prevent the particulate impurities from clogging the air compressor, ensure the air flow of the air compressor, and prevent impurities from clogging the pores of the air distribution cylinder, effectively improve the quality of the compressed gas, and at the same time, through the pipe ring arranged on the surface of the air inlet pipe, the coolant after heat exchange can pass through, and the gas entering the compressor is heated up to reduce the humidity in the gas.

Description

Technical Field

[0001] The invention relates to the technical field of air compressor equipment, and in particular to an oil-free screw air compressor. Background Art

[0002] Oil-free screw air compressor is an important innovation in modern air compression technology. It has made revolutionary improvements and optimizations on the basis of traditional screw air compressors. Oil-free technology is one of the core features of oil-free screw air compressors. Traditional screw air compressors require lubricating oil to lubricate and seal the screw components during operation, but the lubricating oil often mixes with the compressed air, resulting in oil mist or oil pollution in the compressed air. In order to solve this problem, oil-free screw air compressors use advanced sealing materials and coating technology, so that the screw components do not need to use lubricating oil when working, thereby ensuring the purity and reliability of compressed air. Oil-free screw air compressors use a new type of sealing system. These sealing systems use efficient gas sealing and liquid sealing technology to ensure excellent sealing performance between screw components. Through an effective sealing system, oil-free screw air compressors can avoid or minimize the leakage of compressed air, improve energy efficiency and system performance stability;

[0003] The patent document with publication number CN218119296U discloses an oil-free screw air compressor, including an oil-free screw air compressor structure and a mobile support structure, the oil-free screw air compressor structure includes a support seat and a protective cover, the bottom of the support seat is provided with a groove, both sides of the groove are provided with slide grooves, the top surface of the support seat is installed with an organic component, the protective cover is installed and fixed on the top surface of the support seat, the mobile support structure includes a sliding plate and a hydraulic cylinder, the sliding plate is slidably connected to the inside of the groove, the moving wheel is installed at the bottom of the sliding plate, the fixed plate slides through the slide groove and extends to the outside, the hydraulic cylinder is installed on both sides of the protective cover, and the output end of the hydraulic cylinder is installed and fixed on the fixed plate;

[0004] In the above device, although the difficulty of movement can be greatly reduced during temporary movement, making temporary movement more convenient, during use, the gas input end of the air compressor does not have the function of purifying the air. At the same time, the humid gas will cause the humidity of the compressed air to be high, and the gas cannot be evenly delivered to the compressor, resulting in low quality of the compressed gas. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing pallet-managed oil-free screw air compressor has a positioning module and a communication module in the system that are separate and do not have an integrated device, which occupies the vehicle installation space. At the same time, the assembly structure of the equipment is cumbersome and inconvenient for subsequent maintenance and management.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An oil-free screw air compressor comprises a base, a protective cover is fixed to the upper end surface of the base, an air compression component, a gas-liquid separation component and a cooling component are installed on the upper end surface of the base, an air distribution component is installed on the upper end surface of the air compression component, and an air filter component is installed on the upper end surface of the air distribution component;

[0008] The air compressor assembly includes a shock absorbing damper fixed to the upper end surface of the base, the upper end surface of the shock absorbing damper is installed with a support plate, the upper end surface of the support plate is installed with a plurality of shock absorbing pads, a bracket is fixed between the upper end surfaces of two of the shock absorbing pads, an air compressor lower shell is installed between the upper end surfaces of the two brackets, a male screw is installed on one side of the inner cavity of the air compressor lower shell, and a female screw is installed on the other side of the inner cavity of the air compressor lower shell, a rotating shaft is fixed at both ends of the male screw and the female screw, a transmission gear is fixed on the surface of the rotating shaft, a transmission roller is fixed on one side of the lower shell of the air compressor through the extended end of the male screw, a driving motor is fixed on one side of the upper end surface of the base, a transmission belt is installed between the output end of the driving motor and the transmission roller, an exhaust port is embedded and fixed on one side of the lower end surface of the lower shell of the air compressor, an upper shell is assembled with bolts on the upper end surface of the lower shell of the air compressor, an air inlet is embedded and fixed on the upper end surface of the upper shell, an air inlet is assembled on the input end of the air inlet through a connecting flange, and a pipe ring is wound and fixed on the surface of the air inlet pipe;

[0009] The gas-liquid separation assembly includes a gas-liquid separator fixed to the upper end surface of the base, a high-pressure gas outlet pipe is installed on the upper end surface of the gas-liquid separator, an air guide pipe is installed between the gas-liquid separator and the exhaust port, a liquid outlet pipe is installed on the upper end surface of the gas-liquid separator, and a hose 1 is installed between the liquid outlet pipe and the input end of the pipe ring;

[0010] The cooling assembly includes a cooler fixed to the upper end surface of the base, a liquid inlet pipe is fixed to the input end of the cooler, a hose 2 is installed between the liquid inlet pipe and the output end of the pipe ring, a liquid discharge pipe is installed between the output end of the cooler and one side of the upper end of the upper shell, and a liquid guide pipe is installed between one end of the lower end surface of the lower shell of the air compressor and the other side end of the upper end surface of the upper shell;

[0011] The air distribution component includes a connecting pipe assembled on the upper end surface of the air inlet pipe through a connecting flange, a support liner is fixed to the lower end of the inner wall of the connecting pipe, and an air distribution cylinder is movably connected to the upper end surface of the support liner;

[0012] The air filter assembly includes an air intake hood assembled on the upper end surface of the connecting pipe through a connecting flange, a frame is sleeved and inserted on the surface of the air intake hood, an end plate is fixed on the surface of the frame, a handle is fixed on the surface of the end plate, a return spring is fixed to the inner cavity of the end plate, a hanging ear sleeved on the inner cavity of the end plate is fixed to the extended end of the return spring, a pressure frame is fixed between the two hanging ears, and an air filter cloth is movably connected to the inner cavity of the frame.

[0013] As a further description of the above technical solution:

[0014] The four shock absorbers are provided, and the plurality of rotating shafts are rotatably mounted on the two ends of the lower shell of the air compressor respectively.

[0015] As a further description of the above technical solution:

[0016] The male screw rod forms a transmission structure with a driving motor through a transmission belt, and the male screw rod is meshingly connected with the female screw rod.

[0017] As a further description of the above technical solution:

[0018] The air inlet is arranged at the gas input end above the lower shell of the air compressor, and the air outlet is arranged at the gas-liquid output end below the lower shell of the air compressor.

[0019] As a further description of the above technical solution:

[0020] The high-pressure gas outlet pipe is connected through and sleeved with one side of the protective cover.

[0021] As a further description of the above technical solution:

[0022] A heat dissipation fan is fixedly mounted on one end of the cooler.

[0023] As a further description of the above technical solution:

[0024] The air balancing tube is movably sleeved in the inner cavity of the connecting pipe.

[0025] As a further description of the above technical solution:

[0026] The frame is arranged in the inner cavity of the air intake hood.

[0027] As a further description of the above technical solution:

[0028] The pressing frame is movably sleeved with the inner cavity of the frame, and the pressing frame forms an elastic telescopic structure through the hanging ears, the return spring and the end plate.

[0029] As a further description of the above technical solution:

[0030] The pressing frame is movably connected to the surface of the air filter cloth, and the air filter cloth forms a clampable and fixed structure between the pressing frame and the frame.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] 1. In the present invention, the air compressor is provided with an air balancing cylinder at the air inlet end, which can make the gas evenly delivered into the compressor, thereby improving the consistency of the gas density of the compressed air. At the same time, an air filter assembly for filtering the air is provided, which can effectively filter the particulate impurities in the gas, prevent the particulate impurities from clogging the air compressor, ensure the air flow of the air compressor, and prevent impurities from clogging the air holes of the air balancing cylinder, thereby effectively improving the quality of the compressed gas. At the same time, the pipe ring arranged on the surface of the air inlet pipe can allow the coolant after heat exchange to pass through, thereby heating the gas entering the compressor and reducing the humidity in the gas. In summary, the problems in the background technology are solved.

[0033] 2. In the present invention, the air filter cloth and the air balancing tube of the equipment can be easily disassembled and assembled, so that the air filter cloth can be easily replaced later, ensuring that the air filter cloth will not be blocked by particulate impurities and affect the air intake, and can detect whether the air balancing tube is blocked to ensure the uniform flow of gas.

[0034] 3. In the present invention, the upper shell of the air compressor can be easily disassembled and assembled with the lower shell of the air compressor, which is convenient for the later maintenance and care of the air compressor, regular performance testing and troubleshooting, and timely repair and adjustment of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the front view of an oil-free screw air compressor in the present invention;

[0036] Figure 2 It is a structural schematic diagram of a rear view of an oil-free screw air compressor in the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the protective cover in the present invention from the left side;

[0038] Figure 4 This is a schematic diagram of the structure of the protective cover in the present invention from the right side;

[0039] Figure 5 It is a schematic diagram of the structure of the lower shell and the upper shell of the hollow compressor of the present invention being separated;

[0040] Figure 6 It is a schematic diagram of the structure of the hollow compressor of the present invention, with the lower shell and the upper shell separated and viewed from above;

[0041] Figure 7 It is a structural schematic diagram of a cross section of the wind equalizing component in the present invention;

[0042] Figure 8 It is a structural schematic diagram of the air filter component in the present invention;

[0043] Fig. 9 It is a schematic diagram of the structure of the framework in the present invention.

[0044] Legend:

[0045] 1. Base; 2. Protective cover; 3. Air compressor assembly; 301. Shock absorber; 302. Support plate; 303. Shock absorber pad; 304. Bracket; 305. Lower housing of air compressor; 306. Male screw; 307. Female screw; 308. Rotating shaft; 309. Transmission gear; 310. Transmission roller; 311. Driving motor; 312. Transmission belt; 313. Exhaust port; 314. Upper housing; 315. Air inlet; 316. Air inlet pipe; 317. Pipe ring; 4. Gas-liquid separation assembly; 401. Gas-liquid separator; 402. High-pressure gas Export pipe; 403, air guide pipe; 404, liquid export pipe; 405, hose one; 5, cooling assembly; 501, cooler; 502, cooling fan; 503, liquid inlet pipe; 504, hose two; 505, liquid discharge pipe; 506, liquid guide pipe; 6, air distribution assembly; 601, connecting pipe; 602, support; 603, air distribution cylinder; 7, air filter assembly; 701, air inlet hood; 702, frame; 703, end plate; 704, handle; 705, return spring; 706, hanging ear; 707, pressure frame; 708, air filter cloth. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Reference Figure 1-Figure 9 An oil-free screw air compressor comprises a base 1, a protective cover 2 is fixed to the upper end surface of the base 1, an air compression component 3, a gas-liquid separation component 4 and a cooling component 5 are installed on the upper end surface of the base 1, an air distribution component 6 is installed on the upper end surface of the air compression component 3, and an air filter component 7 is installed on the upper end surface of the air distribution component 6;

[0048] The air compressor assembly 3 includes a shock absorbing damper 301 fixed to the upper end surface of the base 1, a support plate 302 is installed on the upper end surface of the shock absorbing damper 301, a plurality of shock absorbing pads 303 are installed on the upper end surface of the support plate 302, a bracket 304 is fixed between the upper end surfaces of the two shock absorbing pads 303, an air compressor lower shell 305 is installed between the upper end surfaces of the two brackets 304, a male screw 306 is installed on one side of the inner cavity of the air compressor lower shell 305, a female screw 307 is installed on the other side of the inner cavity of the air compressor lower shell 305, a rotating shaft 308 is fixed at both ends of the male screw 306 and the female screw 307, and a transmission gear is fixed on the surface of the rotating shaft 308 309, the extended end of the male screw 306 passes through the lower housing 305 of the air compressor and a transmission roller 310 is fixed on one side, a driving motor 311 is fixed on one side of the upper end surface of the base 1, a transmission belt 312 is installed between the output end of the driving motor 311 and the transmission roller 310, an exhaust port 313 is embedded and fixed on one side of the lower end surface of the air compressor lower housing 305, an upper housing 314 is assembled on the upper end surface of the air compressor lower housing 305 by bolts, an air inlet 315 is embedded and fixed on the upper end surface of the upper housing 314, an air inlet 315 is assembled on the input end of the air inlet 315 by a connecting flange, and a pipe ring 317 is wound and fixed on the surface of the air inlet pipe 316;

[0049] The gas-liquid separation component 4 includes a gas-liquid separator 401 fixed to the upper end surface of the base 1, a high-pressure gas outlet pipe 402 is installed on the upper end surface of the gas-liquid separator 401, an air guide pipe 403 is installed between the gas-liquid separator 401 and the exhaust port 313, a liquid outlet pipe 404 is installed on the upper end surface of the gas-liquid separator 401, and a hose 405 is installed between the liquid outlet pipe 404 and the input end of the pipe ring 317;

[0050] The cooling assembly 5 includes a cooler 501 fixed to the upper end surface of the base 1, a liquid inlet pipe 503 is fixed to the input end of the cooler 501, a hose 504 is installed between the liquid inlet pipe 503 and the output end of the pipe ring 317, a liquid discharge pipe 505 is installed between the output end of the cooler 501 and one side of the upper end of the upper shell 314, and a liquid guide pipe 506 is installed between one end of the lower end surface of the air compressor lower shell 305 and the other side of the upper end surface of the upper shell 314;

[0051] The air distribution component 6 includes a connecting pipe 601 assembled to the upper end surface of the air inlet pipe 316 through a connecting flange, a support 602 is fixed to the lower end of the inner wall of the connecting pipe 601, and an air distribution cylinder 603 is movably connected to the upper end surface of the support 602;

[0052] The air filter assembly 7 includes an air intake cover 701 assembled on the upper end surface of the connecting pipe 601 through a connecting flange, a frame 702 is sleeved and inserted on the surface of the air intake cover 701, an end plate 703 is fixed on the surface of the frame 702, a handle 704 is fixed on the surface of the end plate 703, a return spring 705 is fixed to the inner cavity of the end plate 703, a hanging ear 706 sleeved on the inner cavity of the end plate 703 is fixed to the extended end of the return spring 705, a pressure frame 707 is fixed between the two hanging ears 706, and an air filter cloth 708 is movably connected to the inner cavity of the frame 702;

[0053] Place the air distribution tube 603 into the inner cavity of the connecting pipe 601, so that the air distribution tube 603 is placed on the upper end surface of the support 602, and then assemble the connecting pipe 601 on the upper end surface of the air inlet pipe 316 through the connecting flange;

[0054] The air intake hood 701 is assembled on the upper end surface of the connecting pipe 601 through the connecting flange, and then the pressing frame 707 is manually pulled, so that the pressing frame 707 drives the hanging ear 706 to move, and the hanging ear 706 pulls the reset spring 705 to extend, so that the pressing frame 707 is moved out of the inner cavity of the frame 702, and the filter cloth 708 is manually put into the inner cavity of the frame 702. Through the elastic characteristics of the reset spring 705, the hanging ear 706 and the pressing frame 707 are pulled to reset and move, so that the pressing frame 707 squeezes the filter cloth 708 in the frame 702, so that the filter cloth 708 is clamped and fixed in the frame 702, and then the frame 702 is manually plugged into the inner cavity of the air intake hood 701, so that the end plate 703 blocks the plug interface of the air intake hood 701;

[0055] The driving motor 311 starts to operate, so that its output end drives the transmission roller 310 to rotate through the transmission belt 312, and the transmission roller 310 drives the male screw 306 to rotate. At this time, the male screw 306 drives the female screw 307 to rotate synchronously through the rotating shafts 308 set at both ends and the transmission gears 309 that mesh with each other. When the male screw 306 and the female screw 307 rotate, suction is generated at the air inlet hood 701, and the gas enters the air inlet hood 701 and passes through the air filter cloth 708 set in the air inlet hood 701 to filter the particulate impurities in the gas. The filtered gas enters the connecting In the pipeline 601, the gas is evenly sent into the air inlet pipe 316 through the air balancing cylinder 603 provided in the connecting pipeline 601, and then enters the inner cavity of the air compressor through the air inlet pipe 316. The male screw 306 and the female screw 307 rotating in the inner cavity of the air compressor compress the gas and send it into the air guide pipe 403 from the exhaust port 313 at the output end of the air compressor, and then send it into the gas-liquid separator 401 through the air guide pipe 403. The gas and liquid are separated by the gas-liquid separator 401, and the gas is discharged through the high-pressure gas outlet pipe 402, and the liquid is discharged through the liquid outlet pipe 404;

[0056] While the air compressor is operating, the cooler 501 is operating, and the coolant in the cooler 501 is sent to one end of the air compressor through the discharge pipe 505, so that it exchanges heat with the rotating shaft 308 set at one end of the air compressor for cooling, and through the liquid guide pipe 506 connected between the two ends of the air compressor, the coolant is sent to the other end for heat exchange and cooling. The coolant after heat exchange is sent into the air guide pipe 403 from the exhaust port 313 at the output end of the air compressor together with the gas, and then enters the gas-liquid separator 401. The gas-liquid separator 401 sends the coolant after heat exchange from the hose 1 405 into the pipe ring 317, so that the coolant with temperature can exchange heat and heat up the gas passing through the intake pipe 316 through the pipe ring 317. At the same time, the coolant will be cooled by heat exchange. The coolant after one heat exchange and cooling is sent to the cooler 501 through the hose 2 504 for secondary cooling, forming a liquid cycle, and the heat dissipation fan 502 can accelerate the cooling speed of the coolant in the cooler 501.

[0057] Oil-free screw air compressor is a special type of air compressor. Its main feature is that no lubricating oil is required during the air compression process. Compared with traditional lubricated screw air compressors, oil-free screw air compressors have the following advantages:

[0058] Oil-free design: The internal structure and material selection of the oil-free screw air compressor enable it to compress the air without using any lubricating oil, which eliminates the risk of lubricating oil contamination to the air and process, as well as the odor caused by the decomposition of lubricating oil;

[0059] High-quality compressed air: Due to the oil-free design, oil-free screw air compressors provide cleaner, higher-quality compressed air, which is ideal for applications that require higher quality compressed air;

[0060] Low maintenance cost: Traditional lubricated screw air compressors require regular replacement of lubricating oil and maintenance of filter elements and other parts, while oil-free screw air compressors do not require these additional maintenance tasks, which reduces maintenance costs and maintenance time, and improves equipment reliability and efficiency;

[0061] Environmental protection and energy saving: Oil-free screw air compressors do not produce lubricating oil pollutants in the air and do not require lubricating oil disposal, which helps reduce the impact on the environment and improve energy efficiency;

[0062] The air source of the air compressor is usually the surrounding atmospheric air. The air compressor produces compressed air by sucking in the surrounding air, compressing and processing it. In urban or industrial areas, the air source may include air in the atmosphere, gas in gas storage or gas cylinders, etc. At the same time, in some special application scenarios, such as oxygen or nitrogen generation devices, air compressors can also be used to compress and process specific gases for application;

[0063] The air compressor compresses the air through the screw assembly, which is composed of a male screw 306 and a female screw 307. The two mutually meshing male screws 306 and female screws 307 are composed of a main shaft and a driven shaft. The main shaft is usually a large-diameter screw with threads, and the driven shaft is a small-diameter screw with threads. A pair of tightly meshed threads are formed between the two. These threads are designed to be rotatable and form a sealed working chamber inside the device. When the gas enters the working chamber, due to the rotation of the male screw 306 and the female screw 307, the air is gradually compressed and moves along the axial direction toward the exhaust port 313 of the compression chamber.

[0064] The gas-liquid separator 401 is used to separate liquid moisture and solid particles in the compressed air to ensure the supply of pure compressed air. The gas-liquid separator 401 is usually composed of the following parts:

[0065] Air inlet: The air inlet of the gas-liquid separator is connected to the outlet of the air compressor or the compressed air pipeline, so that the compressed air enters the gas-liquid separator 401 through the air inlet;

[0066] Speed ​​reducer and flow guide: After entering the gas-liquid separator 401, the airflow passes through the speed reducer and flow guide. The design of these components changes the direction of the airflow and slows down the airflow speed;

[0067] Inertial separation: As the air flow slows down, droplets and particles settle due to inertia. Droplets are larger and heavier, and will flow through the air collection chamber and sink by themselves, while particles will be separated by inertia.

[0068] Finned air collecting chamber: There is usually a finned air collecting chamber in the gas-liquid separator 401. With the help of its special internal structure, the liquid droplets that sink due to inertial separation are guided to one side and discharged through the outlet at the top of the chamber;

[0069] Filter: In order to further remove small particles and pollutants, the gas-liquid separator 401 is usually also equipped with a filter, such as a filter screen or a filter element, which can capture and filter out residual solid particles to ensure pure compressed air output;

[0070] Through the above principles, the gas-liquid separator 401 can effectively separate the liquid moisture and solid particles in the compressed air;

[0071] The cooler 501 of the air compressor is a device for reducing the temperature of compressed air. It cools the air compressor by sending cooling liquid into the heat exchange channel of the air compressor.

[0072] Furthermore, four shock absorbers 301 are provided, and a plurality of rotating shafts 308 are rotatably mounted on both ends of the lower housing 305 of the air compressor. The shock absorbers 301 can reduce the vibration transmission generated when the air compressor is operating.

[0073] Furthermore, the male screw 306 forms a transmission structure with the driving motor 311 through the transmission belt 312 , and the male screw 306 is meshingly connected with the female screw 307 .

[0074] Furthermore, the air inlet 315 is arranged at the gas input end above the lower shell 305 of the air compressor, and the air outlet 313 is arranged at the gas-liquid output end below the lower shell 305 of the air compressor.

[0075] Furthermore, the high-pressure gas outlet pipe 402 is penetrated and sleeved with one side of the protective cover 2 .

[0076] Furthermore, a heat dissipation fan 502 is fixedly mounted on one end of the cooler 501 .

[0077] Furthermore, the air balancing tube 603 is movably sleeved in the inner cavity of the connecting pipe 601 .

[0078] Furthermore, the frame 702 is disposed in the inner cavity of the air inlet hood 701 .

[0079] Furthermore, the pressing frame 707 is movably connected to the inner cavity of the frame 702 , and the pressing frame 707 forms an elastic telescopic structure through the hanging ear 706 , the return spring 705 and the end plate 703 .

[0080] Furthermore, the pressing frame 707 is movably connected to the surface of the air filter cloth 708 , and the air filter cloth 708 is clamped and fixed by the pressing frame 707 and the frame 702 .

[0081] Working principle: When in use, first put the air balancing tube 603 into the inner cavity of the connecting pipe 601, so that the air balancing tube 603 is placed on the upper end surface of the support 602, and then the connecting pipe 601 is assembled on the upper end surface of the air inlet pipe 316 through the connecting flange, and then the air inlet cover 701 is assembled on the upper end surface of the connecting pipe 601 through the connecting flange, and then manually pull the pressing frame 707, so that the pressing frame 707 drives the hanging ear 706 to move, so that the hanging ear 706 pulls the reset spring 705 to extend, so that the pressing frame 707 is moved out of the inner cavity of the frame 702, and manually put the filter cloth 708 into the inner cavity of the frame 702, and through the elastic characteristics of the reset spring 705, it pulls the hanging ear 706 and the pressing frame 707 to reset and move, so that the pressing frame 707 squeezes the filter cloth in the frame 702 708, so that the filter cloth 708 is clamped and fixed in the frame 702, and then the frame 702 is manually plugged into the inner cavity of the air inlet hood 701, so that the end plate 703 blocks the plug interface of the air inlet hood 701, and the driving motor 311 starts the operation, so that the output end drives the transmission roller 310 to rotate through the transmission belt 312, and the transmission roller 310 drives the male screw 306 to rotate. At this time, the male screw 306 drives the female screw 307 to rotate synchronously through the rotating shafts 308 set at both ends and the mutually meshing transmission gears 309. When the male screw 306 and the female screw 307 rotate, suction is generated at the air inlet hood 701, and the gas enters the air inlet hood 701, and passes through the filter cloth 708 set in the air inlet hood 701 to filter the particulate impurities in the gas, and the filtered gas Entering the connecting pipe 601, at this time, the gas is evenly sent into the air inlet pipe 316 through the air balancing cylinder 603 set in the connecting pipe 601, and then enters the inner cavity of the air compressor through the air inlet pipe 316. The male screw 306 and the female screw 307 rotating in the inner cavity of the air compressor compress the gas and send it into the air guide pipe 403 from the exhaust port 313 at the output end of the air compressor, and then send it into the gas-liquid separator 401 through the air guide pipe 403. The gas and liquid are separated by the gas-liquid separator 401, and the gas is discharged through the high-pressure gas outlet pipe 402, and the liquid is discharged through the liquid outlet pipe 404. When the air compressor is working, the cooler 501 is working, and the coolant in the cooler 501 is sent to one end of the air compressor through the discharge pipe 505, so that it is set at one end of the air compressor. The rotating shaft 308 is heat exchanged and cooled, and the cooling liquid is sent to the other end for heat exchange and cooling through the liquid guide pipe 506 connected between the two ends of the air compressor. The cooling liquid after heat exchange is sent into the air guide pipe 403 with the gas from the exhaust port 313 at the output end of the air compressor, and then enters the gas-liquid separator 401. The gas-liquid separator 401 sends the cooling liquid after heat exchange from the hose 1 405 into the pipe ring 317, so that the cooling liquid with temperature can heat exchange and heat up the gas passing through the intake pipe 316 through the pipe ring 317. At the same time, the cooling liquid will be heat exchanged and cooled at this time. The cooling liquid after one heat exchange and cooling is sent into the cooler 501 for secondary cooling through the hose 2 504, forming a liquid cycle, and the cooling fan 502 can accelerate the cooling speed of the cooling liquid in the cooler 501.This completes the working principle of the present invention.

[0082] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil-free screw air compressor, comprising a base (1), characterized in that: A protective cover (2) is fixed to the upper end surface of the base (1); an air compression component (3), a gas-liquid separation component (4) and a cooling component (5) are installed on the upper end surface of the base (1); an air distribution component (6) is installed on the upper end surface of the air compression component (3); and an air filter component (7) is installed on the upper end surface of the air distribution component (6); The air compressor assembly (3) comprises a shock absorbing damper (301) fixed to the upper end surface of the base (1); a support plate (302) is installed on the upper end surface of the shock absorbing damper (301); a plurality of shock absorbing pads (303) are installed on the upper end surface of the support plate (302); a bracket (304) is fixed between the upper end surfaces of two shock absorbing pads (303); an air compressor lower shell (305) is installed between the upper end surfaces of the two brackets (304); a male screw (306) is installed on one side of the inner cavity of the air compressor lower shell (305); a female screw (307) is installed on the other side of the inner cavity of the air compressor lower shell (305); rotating shafts (308) are fixed at both ends of the male screw (306) and the female screw (307); a transmission shaft (308) is fixed on the surface of the rotating shaft (308) gear (309), the extended end of the male screw rod (306) passes through one side of the lower housing (305) of the air compressor and is fixed with a transmission roller (310), a driving motor (311) is fixed on one side of the upper end surface of the base (1), a transmission belt (312) is installed between the output end of the driving motor (311) and the transmission roller (310), an exhaust port (313) is embedded and fixed on one side of the lower end surface of the lower housing (305) of the air compressor, an upper housing (314) is assembled with bolts on the upper end surface of the lower housing (305) of the air compressor, an air inlet (315) is embedded and fixed on the upper end surface of the upper housing (314), an air inlet (315) is assembled on the input end of the air inlet (315) through a connecting flange, and a pipe ring (317) is wound and fixed on the surface of the air inlet pipe (316); The gas-liquid separation component (4) comprises a gas-liquid separator (401) fixed to the upper end surface of the base (1); a high-pressure gas outlet pipe (402) is installed on the upper end surface of the gas-liquid separator (401); an air guide pipe (403) is installed between the gas-liquid separator (401) and the exhaust port (313); a liquid outlet pipe (404) is installed on the upper end surface of the gas-liquid separator (401); and a hose 1 (405) is installed between the liquid outlet pipe (404) and the input end of the pipe ring (317); The cooling assembly (5) comprises a cooler (501) fixed to the upper end surface of the base (1); a liquid inlet pipe (503) is fixed to the input end of the cooler (501); a second hose (504) is installed between the liquid inlet pipe (503) and the output end of the pipe ring (317); a liquid discharge pipe (505) is installed between the output end of the cooler (501) and one side of the upper end of the upper shell (314); and a liquid guide pipe (506) is installed between one end of the lower end surface of the lower shell (305) of the air compressor and the other side of the upper end surface of the upper shell (314); The air distribution component (6) comprises a connecting pipe (601) assembled on the upper end surface of the air inlet pipe (316) through a connecting flange, a supporting liner (602) is fixed to the lower end of the inner wall of the connecting pipe (601), and an air distribution cylinder (603) is movably connected to the upper end surface of the supporting liner (602); The air filter assembly (7) comprises an air intake hood (701) which is assembled on the upper end surface of the connecting pipe (601) through a connecting flange; a frame (702) is sleeved and inserted on the surface of the air intake hood (701); an end plate (703) is fixed on the surface of the frame (702); a handle (704) is fixed on the surface of the end plate (703); a return spring (705) is fixed in the inner cavity of the end plate (703); a hanging ear (706) sleeved in the inner cavity of the end plate (703) is fixed at the extended end of the return spring (705); a pressure frame (707) is fixed between the two hanging ears (706); and an air filter cloth (708) is movably connected to the inner cavity of the frame (702).

2. The oil-free screw air compressor according to claim 1, characterized in that: Four of the vibration dampers (301) are provided, and the plurality of rotating shafts (308) are rotatably mounted on both ends of the lower casing (305) of the air compressor.

3. The oil-free screw air compressor according to claim 1, characterized in that: The male screw (306) forms a transmission structure with a driving motor (311) via a transmission belt (312), and the male screw (306) is meshingly connected with the female screw (307).

4. The oil-free screw air compressor according to claim 1, characterized in that: The air inlet (315) is arranged at the gas input end above the lower shell (305) of the air compressor, and the air outlet (313) is arranged at the gas-liquid output end below the lower shell (305) of the air compressor.

5. The oil-free screw air compressor according to claim 1, characterized in that: The high-pressure gas outlet pipe (402) is connected to one side of the protective cover (2) by penetrating and sleeve-jointing.

6. The oil-free screw air compressor according to claim 1, characterized in that: A heat dissipation fan (502) is fixedly mounted on one end of the cooler (501).

7. The oil-free screw air compressor according to claim 1, characterized in that: The air distribution cylinder (603) is movably sleeved in the inner cavity of the connecting pipe (601).

8. The oil-free screw air compressor according to claim 1, characterized in that: The frame (702) is arranged in the inner cavity of the air inlet hood (701).

9. The oil-free screw air compressor according to claim 1, characterized in that: The pressing frame (707) is movably sleeved with the inner cavity of the frame (702), and the pressing frame (707) forms an elastic telescopic structure through the hanging ears (706), the return spring (705) and the end plate (703).

10. The oil-free screw air compressor according to claim 1, characterized in that: The pressing frame (707) is movably connected to the surface of the air filter cloth (708), and the air filter cloth (708) forms a clampable fixed structure between the pressing frame (707) and the frame (702).

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