Screw and piston series connection integrated high-pressure oil-free compressed air system

Abstract

The utility model discloses a screw and piston series connection integrated high-pressure oil-free compressed air system which comprises an air filter, a two-stage screw main machine, a piston pressurization main machine, an oil-gas separation assembly, a multi-stage separation assembly, filtering equipment and a high-pressure freeze dryer. The two-stage screw main machine is used for compressing air; the piston pressurizing main engine is used for pressurizing air to a high-pressure state, the air filter is connected with the oil-gas separation assembly through the two-stage screw main engine, the oil-gas separation assembly is connected with the multi-stage separation assembly, and the multi-stage separation assembly is connected with the filtering equipment. The device has the beneficial effects that the multi-stage separation assembly carries out multi-stage gas-liquid separation on air, compressed air is conveyed into the filter equipment, the filter equipment carries out multiple separation and filtration on impurities of the compressed air, and the high-pressure freeze dryer carries out freezing and water removal on moisture in the compressed air, so that the purity of the compressed air is higher; and the quality of compressed air is improved, and pollution to gas equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor technical field, especially a screw rod piston series connection integrated high pressure oil -free compressed air system. BACKGROUND

[0002] Air compressor is a kind of compressed air compression equipment, provides compressed air for various application sites, and drives various pneumatic tools and pneumatic devices. With the progress of science and technology and the development of industrial modernization, for the bottle blowing, oil drilling, pressure testing and other industries needing oil-free high pressure compressed air, the pollution of compressed air (gas) and its purification technology have attracted the attention of gas departments and manufacturers in various countries;

[0003] The traditional high pressure air compressor on the market contains more oil, needs to be additionally matched with external refrigerated dryer, precision filter, is installed in special air compression station through pressure pipeline connection, has large floor area, and needs to install pressure pipeline on site, is far away from gas terminal, has large pressure loss and high energy consumption. A highly integrated skid-mounted, plug-and-play high pressure oil-free compressed air system is urgently needed to improve the quality of compressed air, reduce pressure loss and improve the energy efficiency of the compressed air system. UTILITY MODEL CONTENT

[0004] In view of the above defects, the utility model aims at providing a container type screw rod piston series connection integrated high pressure oil-free compressed air system which reduces oil content and can perform multi-stage separation and filtration and water removal process on compressed air, thereby ensuring the quality of compressed air.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A screw rod piston series connection integrated high pressure oil-free compressed air system includes an air filter, a two-stage screw rod host, a piston supercharging host, an oil-gas separation assembly, a multi-stage separation assembly, a filtration device and a high pressure refrigerated dryer. The air filter is used to filter external air. The two-stage screw rod host is used to compress air. The piston supercharging host is used to supercharge compressed air to a high pressure state. The air filter is connected to one end of the two-stage screw rod host. The other end of the two-stage screw rod host is connected to the receiving end of the oil-gas separation assembly. The output end of the oil-gas separation assembly is connected to the multi-stage separation assembly. The output end of the multi-stage separation assembly is connected to the filtration device.

[0007] Preferably, the screw-piston series integrated high-pressure oil-free compressed air system, the multi-stage separation assembly comprises a first cooler, a first gas-liquid separator, a buffer gas storage tank and an air inlet precision filter, the receiving end of the first cooler is connected with the oil-gas separation assembly, the output end of the first cooler is connected with the first gas-liquid separator, the first gas-liquid separator is connected with the buffer gas storage tank, the output end of the buffer gas storage tank is connected with the air inlet precision filter, and the output end of the air inlet precision filter is connected with the 1-stage compression input end of the piston supercharging main machine.

[0008] Preferably, the screw-piston series integrated high-pressure oil-free compressed air system, the multi-stage separation assembly further comprises a second cooler, a second gas-liquid separator, a third cooler and a third gas-liquid separator, the input end of the second cooler is connected with the 1-stage compression output end of the piston supercharging main machine, the input end of the second gas-liquid separator is connected with the output end of the second cooler, the output end of the second gas-liquid separator is connected with the 2-stage compression input end of the piston supercharging main machine, the input end of the third cooler is connected with the 2-stage compression output end of the piston supercharging main machine, the input end of the third gas-liquid separator is connected with the output end of the third cooler, and the output end of the third gas-liquid separator is connected with the input end of the filtering device.

[0009] Preferably, the screw-piston series integrated high-pressure oil-free compressed air system, the filtering device comprises a first high-pressure filtering assembly, a second high-pressure filtering assembly and a third high-pressure filtering assembly, the first high-pressure filtering assembly is connected with the third gas-liquid separator outlet, and the high-pressure freeze dryer is connected with the second high-pressure filtering assembly and the third high-pressure filtering assembly respectively.

[0010] Preferably, the screw-piston series integrated high-pressure oil-free compressed air system, the high-pressure freeze dryer is provided with a bypass circuit, the bypass circuit is sequentially connected with the first high-pressure filtering assembly, the second high-pressure filtering assembly and the third high-pressure filtering assembly, and the output end of the third high-pressure filtering assembly is used for being connected with an external gas storage tank.

[0011] Preferably, the screw-piston series integrated high-pressure oil-free compressed air system, the oil-gas separation assembly comprises an oil-gas barrel and an oil-gas separator, the other end of the double-stage screw main machine is connected with the oil-gas barrel, the oil-gas barrel is connected with the receiving end of the oil-gas separator, and the output end of the oil-gas separator is connected with the first cooler.

[0012] The screw-piston series integrated high-pressure oil-free compressed air system has the advantages that:

[0013] Firstly, the air sucked from outside is filtered by the air filter, and then the filtered air is sent to the inside of the double-stage screw host for air compression and mixing with lubricating oil, and then the compressed air mixed with lubricating oil is sent to the oil-gas separation assembly for a preliminary air-oil separation process, and then the separated compressed air is sent to the inside of the multi-stage separation assembly for a multi-stage air-liquid separation process, and then the compressed air is sent to the inside of the filtering equipment for a re-filtering process, and then the compressed air is sent to the high-pressure freeze dryer for frozen water removal, and finally the compressed air is filtered by the filtering equipment for a final filtering process, so that the purity of the air is higher, and the quality of the compressed air is improved, and the pollution to the air end is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The system flowchart of one embodiment of the utility model.

[0015] The system flowchart of one embodiment of the utility model.

[0016] The system flowchart of one embodiment of the utility model. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as a limitation on the utility model.

[0018] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0019] In the description of the utility model, it is to explain, unless otherwise definite and limited, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0020] In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise stated.

[0021] As Figure 1 As shown in a kind of screw piston series integrated high-pressure oil-free compressed air system, it includes air filter 11, two-stage screw main machine 12, piston booster main machine 121, oil-gas separation assembly 13, multi-stage separation assembly, filtering equipment and high-pressure freeze dryer 25, air filter 11 is used to filter external air;Two-stage screw main machine 12 is used to compress air;Piston booster main machine 121 is used to pressurize air to high-pressure state, air filter 11 is connected with one end of two-stage screw main machine 12, the other end of two-stage screw main machine 12 is connected with the receiving end of oil-gas separation assembly 13, the output end of oil-gas separation assembly 13 is connected with multi-stage separation assembly, the output end of multi-stage separation assembly is connected with filtering equipment;Firstly, dust filtering process is carried out to the air drawn from outside by air filter 11, after dust filtering process, it is sent to two-stage screw main machine 12 inside to carry out air compression, and is mixed with lubricating oil, and then the compressed air mixed with lubricating oil is transported to oil-gas separation assembly 13, preliminary gas-oil separation process is carried out to it by oil-gas separation assembly 13, after preliminary gas-oil separation process, the separated compressed air is transported to multi-stage separation assembly inside to carry out multi-stage gas-liquid separation process, through piston booster main machine 121, 2 times pressurization and cooling and gas-liquid separation process, then the compressed air is transported to filtering equipment inside, and the impurities existing in air are filtered again by filtering equipment, then the compressed air is transported to high-pressure freeze dryer 25 to freeze water, after freeze water, finally, the air is filtered again by filtering equipment to carry out final filtering process, the design makes the purity of air higher, so as to improve compressed air quality, reduce pollution to gas end.

[0022] The screw piston series integrated high pressure oil-free compressed air system in the embodiment, wherein the multi-stage separation assembly includes a first cooler 14, a first gas-liquid separator 15, a buffer gas storage tank 16 and an air inlet precision filter 17, the receiving end of the first cooler 14 is connected with the oil-gas separation assembly 13, the output end of the first cooler 14 is connected with the first gas-liquid separator 15, the first gas-liquid separator 15 is connected with the buffer gas storage tank 16, the output end of the buffer gas storage tank 16 is connected with the air inlet precision filter 17, and the output end of the air inlet precision filter 17 is connected with the piston booster host 121; it should be noted that the multi-stage separation assembly further includes a second cooler 20, a second gas-liquid separator 21, a third cooler 22 and a third gas-liquid separator 23, the input end of the second cooler 20 is connected with the 1-stage compression output end of the piston booster host 121, the input end of the second gas-liquid separator 21 is connected with the output end of the second cooler 20, the output end of the second gas-liquid separator 21 is connected with the 2-stage compression input end of the piston booster host 121, the input end of the third cooler 22 is connected with the 2-stage compression output end of the piston booster host 121, the input end of the third gas-liquid separator 23 is connected with the output end of the third cooler 22, and the output end of the third gas-liquid separator 23 is connected with the input end of the filtering equipment; each stage of separation assembly adopts automatic blowdown; since the multi-stage separation assembly is composed of the first cooler 14, the first gas-liquid separator 15, the buffer gas storage tank 16, the air inlet precision filter 17, the second cooler 20 and the second gas-liquid separator 21, the third cooler 22 and the third gas-liquid separator 23, the compressed air after preliminary gas-oil separation is delivered to the first cooler 14 for cooling, then the cooled compressed air is sent to the first gas-liquid separator 15 for gas-liquid separation, then the separated compressed air is sent to the buffer gas storage tank 16, then the compressed air is filtered by the air inlet precision filter 17 to remove dust and impurities, and then the compressed air is sent to the piston booster host 121 for compression, after the compression by the piston booster host 121, the compressed air is delivered to the second cooler 20 and the second gas-liquid separator 21 inside for the above air and liquid separation process, then enters the piston booster host 121 for compression, after the compression by the piston booster host 121, the compressed air is delivered to the third cooler 22 and the third gas-liquid separator 23 inside for the above air and liquid separation process, then passes through the filtering equipment to filter impurities in the compressed air, then passes through the high pressure cold dryer to remove water, and finally passes through the filtering equipment for multiple filtration to remove trace oil mist in the compressed air and filter impurities in the compressed air, so that the air purity is higher, the purpose of multi-stage separation and filtration is achieved, and the output high pressure compressed air meets the clean gas requirement without oil and water.

[0023] It is worth mentioning that the filtering device comprises the first high-pressure filtering assembly 24, the second high-pressure filtering assembly 26 and the third high-pressure filtering assembly 27; the first high-pressure filtering assembly 24 is connected with the outlet of the third gas-liquid separator 23, the high-pressure freeze dryer 25 is connected with the second high-pressure filtering assembly 26 and the third high-pressure filtering assembly 27 respectively; the impurities in the air are filtered again through the first high-pressure filtering assembly 24, the compressed air is then delivered to the high-pressure freeze dryer 25 for frozen water removal, and finally the compressed air is filtered finally through the second high-pressure filtering assembly 26 and the third high-pressure filtering assembly 27, so that the purity of the air is higher, the quality of the compressed air is improved, and the pollution to the air using end is reduced, thereby achieving the purposes of multi-stage filtering and water removal.

[0024] The screw piston series integrated high-pressure oil-free compressed air system in the embodiment comprises the high-pressure freeze dryer 25 provided with a bypass circuit, the bypass circuit is connected with the first high-pressure filtering assembly 24, the second high-pressure filtering assembly 26 and the third high-pressure filtering assembly 27 in sequence, and the output end of the third high-pressure filtering assembly 27 is used for being connected with an external gas storage tank; the design makes it possible to switch to bypass operation when the freeze dryer 25 fails, so that the clean compressed air can be provided to the user.

[0025] The screw piston series integrated high-pressure oil-free compressed air system in some embodiments comprises the oil-gas separation assembly 13 comprising an oil-gas bucket and an oil-gas separator, the other end of the double-stage screw main machine 12 is connected with the oil-gas bucket, the oil-gas bucket is connected with the receiving end of the oil-gas separator, and the output end of the oil-gas separator is connected with the first cooler 14; the oil mixed air discharged by the double-stage screw main machine 12 is received by the oil-gas bucket, the preliminary gas-oil separation process is performed through the oil-gas bucket, after the preliminary separation is completed, the separated mixed air is delivered to the oil-gas separator for fine separation process, so that the preliminary air filtering and oil-gas fine separation are completed, and the quality of the compressed air is improved.

[0026] The technical principles of the utility model are described above in combination with specific embodiments. The descriptions are only for explaining the principles of the utility model, and cannot be explained as the limitation of the protection scope of the utility model in any way. Based on the explanations herein, the other specific embodiments of the utility model can be conceived by the person skilled in the art without creative labor, and these embodiments will fall into the protection scope of the utility model.

Claims

1. A screw-piston tandem integrated high-pressure oil-free compressed air system, characterized in that: It includes an air filter, a two-stage screw compressor, a piston booster compressor, an oil-gas separation assembly, a multi-stage separation assembly, a filtration device, and a high-pressure refrigerated dryer. The air filter is used to filter external air; the two-stage screw compressor is used to compress air. The piston booster is used to boost compressed air to a high-pressure state. The air filter is connected to one end of the two-stage screw compressor, the other end of the two-stage screw compressor is connected to the receiving end of the oil-gas separation component, the output end of the oil-gas separation component is connected to the multi-stage separation component, and the output end of the multi-stage separation component is connected to the filtration device.

2. The screw-piston series integrated high-pressure oil-free compressed air system according to claim 1, characterized in that: The multi-stage separation assembly includes a first cooler, a first gas-liquid separator, a buffer gas tank, and an intake precision filter. The receiving end of the first cooler is connected to the oil-gas separation assembly, the output end of the first cooler is connected to the first gas-liquid separator, the first gas-liquid separator is connected to the buffer gas tank, the output end of the buffer gas tank is connected to the intake precision filter, and the output end of the intake precision filter is connected to the first-stage compression input end of the piston supercharger.

3. The screw-piston series integrated high-pressure oil-free compressed air system according to claim 2, characterized in that: The multi-stage separation assembly further includes a second cooler, a second gas-liquid separator, a third cooler, and a third gas-liquid separator. The input end of the second cooler is connected to the first-stage compression output end of the piston booster. The input end of the second gas-liquid separator is connected to the output end of the second cooler. The output end of the second gas-liquid separator is connected to the second-stage compression input end of the piston booster. The input end of the third cooler is connected to the second-stage compression output end of the piston booster. The input end of the third gas-liquid separator is connected to the output end of the third cooler. The output end of the third gas-liquid separator is connected to the input end of the filtration device.

4. The screw-piston series integrated high-pressure oil-free compressed air system according to claim 3, characterized in that: The filtration device includes a first high-pressure filtration component, a second high-pressure filtration component, and a third high-pressure filtration component; the first high-pressure filtration component is connected to the outlet of the third gas-liquid separator, and the high-pressure freeze dryer is connected to the second high-pressure filtration component and the third high-pressure filtration component respectively.

5. The screw-piston tandem integrated high-pressure oil-free compressed air system according to claim 4, characterized in that: The high-pressure freeze dryer is equipped with a bypass circuit, which is connected in sequence to the first high-pressure filter assembly, the second high-pressure filter assembly and the third high-pressure filter assembly. The output end of the third high-pressure filter assembly is used to connect to an external gas storage tank.

6. The screw-piston tandem integrated high-pressure oil-free compressed air system according to claim 2, characterized in that: The oil-gas separation assembly includes an oil-gas tank and an oil-gas separator. The other end of the two-stage screw compressor is connected to the oil-gas tank, the oil-gas tank is connected to the receiving end of the oil-gas separator, and the output end of the oil-gas separator is connected to the first cooler.

Images