Waste heat recovery two-stage compression screw blowing air compressor

Abstract

The invention provides a waste heat recovery two-stage compression screw blowing air compressor, which relates to the technical field of air compressors, and comprises an air compressor base box, a storage type door opening mechanism, a buffer assembly, a limiting support assembly, a first motor, a screw main machine, an oil-gas separator, a first oil outlet pipe, a preheating water pipe, a water filtering assembly, an oil filtering assembly, a waste heat recovery assembly and a heat dissipation assembly, the waste heat recovery assembly can conduct heat transfer cooling on hot oil to a great extent, finally, the hot oil flows to a second oil outlet pipe to flow out, the flowing speed of the hot oil can be increased through the arranged oil pump, hot water flows out through the second water outlet pipe and is conveyed to a needed place, and the water flow speed can be increased through the arranged water pump; the liquid in the oil tank can be led out through a third water outlet pipe when reaching a certain temperature, due to the fact that the temperature of the hot oil is too high, the heat absorbed by the oil tank is more, the utilization rate of waste heat recovery can be improved, the heat absorbed by the oil tank is more complete when the oil tank enters the oil tank again, and the cooling and lubricating effects are better.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and more specifically, to a waste heat recovery two-stage compression screw blower air compressor. Background Art

[0002] Blower air compressors mainly compress air to a certain pressure and output compressed air with stable flow and pressure through specific mechanical structure and working principle. Two-stage compression screw blower air compressors generate a lot of heat during operation, which is usually directly discharged into the environment, causing energy waste and environmental thermal pollution. The waste heat recovery two-stage compression screw blower air compressor collects this heat through a heat exchanger and transfers it to the circulating medium (such as water or oil), and then transports the heat medium to the system that needs heating, such as the heating system, hot water supply system or process heating equipment, so as to realize the recovery and utilization of waste heat.

[0003] At present, the waste heat recovery two-stage compression screw blower air compressor in the existing technology cleverly transfers the hot air and hot oil generated by the screw main unit into the oil-gas separator for separation, and then enters the waste heat recovery device to replace the heat of the hot air and hot oil therein, thereby utilizing the recovered heat energy in the heating system, hot water supply system, etc.

[0004] However, although the existing two-stage compression screw blower air compressor can effectively recover heat energy, there are still some problems. When the air compressor is started, the lubricating oil will absorb a large amount of heat during the circulation process, especially when the main shaft of the screw main unit rubs against the bearing, a large amount of friction heat will be generated. This heat will eventually be transferred to the lubricating oil, among which the heat transfer efficiency of the oil is relatively high, so the amount of oil waste heat recovery is usually large. After the lubricating oil in the prior art has transferred the heat, the heat of the lubricating oil is still too high, and it is not cooled well, resulting in the heat of the entire equipment being always very high, and the utilization rate of waste heat recovery is not high.

[0005] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a waste heat recovery two-stage compression screw blower air compressor is provided, in order to achieve a more practical purpose. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a waste heat recovery two-stage compression screw blower air compressor to solve the above problems.

[0007] The present invention provides a waste heat recovery two-stage compression screw blower air compressor, which is achieved by the following specific technical means:

[0008] A waste heat recovery two-stage compression screw blower air compressor, characterized in that it includes an air compressor base box, a retractable door opening mechanism, a buffer component, a limit support component, a first motor, a screw main unit, an oil-gas separator, a first oil outlet pipe, a preheating water pipe, a water filter component, an oil filter component, a waste heat recovery component, and a heat dissipation component, wherein:

[0009] The retractable door opening mechanism is installed on one side of the interior of the air compressor base box, the buffer assembly is installed on one side of the bottom of the retractable door opening mechanism, and the limit support assembly is installed on one side of the top of the retractable door opening mechanism;

[0010] The first motor, screw main unit, oil-gas separator, first oil outlet pipe, preheating water pipe, water filter assembly, oil filter assembly, waste heat recovery assembly, and heat dissipation assembly are all installed inside the air compressor base box. The screw main unit is installed on one side of the output end of the first motor. The oil-gas separator is located on one side of the screw main unit. The waste heat recovery assembly is located on one side of the oil-gas separator. The screw main unit is connected to the oil-gas separator through a pipeline. The output end of the oil-gas separator is fixedly connected to the first oil outlet pipe. The output end of the first oil outlet pipe is installed with an oil filter assembly. One end of the oil filter assembly is connected to the waste heat recovery assembly. One end of the preheating water pipe is connected to a water source. The other end of the preheating water pipe is connected and installed with a water filter assembly. One end of the water filter assembly is connected to the waste heat recovery assembly. The heat dissipation assembly is installed on one side inside the air compressor base box.

[0011] Furthermore, the waste heat recovery component includes a waste heat recovery box, the top of the waste heat recovery box is fixedly connected with a water inlet pipe, the bottom of one side of the waste heat recovery box is fixedly connected with a third water outlet pipe, an L-shaped oil inlet pipe is penetrated through one side of the waste heat recovery box, the output end of the L-shaped oil inlet pipe is connected to the oil filter assembly, one end of the water filter assembly is fixedly connected with a connecting water pipe, the connecting water pipe penetrates into the internal arrangement of the L-shaped oil inlet pipe, the connecting water pipe is flush with the output end of the L-shaped oil inlet pipe, one end of the L-shaped oil inlet pipe is installed with a first sealing connector, one end of the first sealing connector is fixedly connected with a first serpentine inner and outer layer connecting pipe, the first serpentine inner and outer layer connecting pipe is provided with two groups, one end of one group of the first serpentine inner and outer layer connecting pipes is installed with a second sealing connector, and the second sealing connector A second serpentine inner and outer layer connecting tube is installed at one end of the connecting piece, and the second serpentine inner and outer layer connecting tubes are arranged in several groups, and the several groups of second serpentine inner and outer layer connecting tubes are fixed to each other through a second sealing connector, and one end of the last group of the second serpentine inner and outer layer connecting tubes is fixed to another group of the first serpentine inner and outer layer connecting tubes through a second sealing connector, the first serpentine inner and outer layer connecting tubes and the second serpentine inner and outer layer connecting tubes are double-layer tubes, and the double-layer tubes are fixed to each other through a second fixing block, one end of the first serpentine inner and outer layer connecting tube is installed with a first sealing connector, one end of the first sealing connector is fixedly connected with a second oil outlet pipe, one end of the second oil outlet pipe is connected with the said and an oil pump is installed inside, a second water outlet pipe is penetrated by one side of the second oil outlet pipe, and a water pump is installed at one end of the second water outlet pipe.

[0012] Furthermore, the second sealing connector includes a connecting piece, the interior of which is a double-layer tube arrangement, and the size corresponds to the first serpentine inner and outer layer connecting tube and the second serpentine inner and outer layer connecting tube, the outside of both sides of the connecting piece are threadedly connected with internal threaded tubes, the outer tube of the connecting piece is fixedly connected with outer sealing rings on both sides, and the inner tube of the connecting piece is fixedly connected with inner sealing rings on both sides.

[0013] Furthermore, two layers of filter screens are installed inside the water filter component, one layer of filter screen is filled with filter cotton, and the other layer of filter screen is filled with activated carbon. The oil filter component is installed with filter screens on both sides, one layer of filter screen is empty, and the other layer of filter screen is filled with paper and activated carbon.

[0014] Furthermore, a plurality of groups of symmetrical heat dissipation fins are fixedly connected to the outer sides of the first serpentine inner and outer layer connecting tube and the second serpentine inner and outer layer connecting tube.

[0015] Furthermore, the retractable door opening mechanism includes a support plate, which is fixed to one side of the inner part of the air compressor base box, one side of the support plate is fixedly connected to a second limit rod, the outer side of the second limit rod is rotatably connected to a connecting support rod, the other end of the connecting support rod is penetrated by a first limit rod, the first limit rod is rotatably connected to the connecting support rod, one side of the first limit rod is fixedly connected to a first support block, and the top of the first support block is fixedly connected to a maintenance side door.

[0016] Furthermore, the buffer assembly includes a fixed connecting piece, which is fixedly connected to a side of the connecting support rod located on the outside of the second limiting rod, one end of the fixed connecting piece is fixedly connected to a circular fixing block, one side of the circular fixing block is fixedly connected to a first limiting protrusion, the outside of the first limiting protrusion is fixedly connected to a spring connecting piece, a first fixing block is provided on the inner side of the air compressor base box and the bottom of the support plate, the first fixing block is fixedly connected to the air compressor base box, one side of the first fixing block is fixedly connected to a second limiting protrusion, the second limiting protrusion is connected to the first limiting protrusion via the spring connecting piece, and the other end of the spring connecting piece is fixed to the outside of the second limiting protrusion.

[0017] Furthermore, the position-limiting support assembly includes a second support block, the second support block is fixedly connected to the bottom of the maintenance side door, a moving wheel is installed on one side of the second support block, and the moving wheel rolls on the support plate.

[0018] Furthermore, the heat dissipation assembly includes a mounting plate, which is fixedly connected to an inner side of the air compressor base box, a heat dissipation fan water filter assembly is installed through one side of the mounting plate, a radiator is installed on one side of the air compressor base box, and the radiator and the heat dissipation fan water filter assembly are located on the same side of the interior of the air compressor base box.

[0019] Furthermore, a first groove is formed at the bottom of the front surface of the maintenance side door, and a second groove is formed at the inner bottom end of the first groove.

[0020] Furthermore, a clamping block is fixedly connected to the bottom of the maintenance side door, and a clamping slot for the clamping block to be inserted is provided at the inner bottom end of the air compressor base box.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The liquid to be heated is infused into the waste heat recovery tank through the water inlet pipe. The L-shaped oil inlet pipe transports the hot oil that needs to be recovered after being filtered by the oil filter assembly to the first serpentine inner and outer layer connecting pipe. The connecting water pipe also transports the water filtered by the water filter assembly to the first serpentine inner and outer layer connecting pipe. Finally, they are transported together to several groups of second serpentine inner and outer layer connecting pipes for continuous heat transfer, thereby greatly cooling the hot oil through heat transfer. Finally, they are transported together through another group of first serpentine inner and outer layer connecting pipes to the second oil outlet pipe for outflow. The flow rate of the hot oil can be accelerated by the set oil pump, and the hot water flows out through the second water outlet pipe and is transported to where it is needed. The set water pump can speed up the water flow rate. When the liquid in the waste heat recovery tank reaches a certain temperature, it can be discharged through the third water outlet pipe and transported to other needed places. Later, new liquid is re-introduced from the water inlet pipe for heat exchange. Because the temperature of the hot oil is too high, this design allows it to absorb more heat, and the utilization rate of waste heat recovery will be improved. When it re-enters the heat, the heat absorbed is more complete, and the cooling and lubrication effect is better.

[0023] When the maintenance side door is lowered, the connecting support rod is rotated to allow it to rotate through the fixed connecting piece on one side of the second limiting rod, thereby driving the circular fixed block to rotate, and finally driving the first limiting convex rod to rotate, which will drive the spring connecting piece connected and fixed between the first limiting convex rod and the second limiting convex rod to stretch, which can play a buffering role. The second supporting block facilitates the installation of the moving wheel. When the maintenance side door is operated and moved, the moving wheel will always roll on the supporting plate to play a certain supporting role, share part of the gravity of the storage type door opening mechanism, and at the same time will not let the maintenance side door shake during movement, thereby increasing a certain stability. The first groove and the second groove can be used to conveniently lift the maintenance side door and store it in the interior of the air compressor base box, so that the interior of the air compressor can be maintained, inspected and cleaned daily.

[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a three-dimensional structural schematic diagram of a waste heat recovery two-stage compression screw blower air compressor.

[0026] Figure 2 The present invention is a schematic cross-sectional structural diagram of a waste heat recovery two-stage compression screw blower air compressor.

[0027] Figure 3 The present invention is a schematic diagram of the internal structure of a waste heat recovery component of a two-stage compression screw blower air compressor with waste heat recovery.

[0028] Figure 4 The present invention is a schematic diagram of the cross-sectional structure of a waste heat recovery component of a two-stage compression screw blower air compressor with waste heat recovery.

[0029] Figure 5 It is a schematic diagram of the structure of a second sealing connector of a waste heat recovery two-stage compression screw blower air compressor according to the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of a retractable door opening mechanism of a waste heat recovery two-stage compression screw blower air compressor of the present invention.

[0031] Figure 7 It is a schematic diagram of the structure of a limiting support assembly of a waste heat recovery two-stage compression screw blower air compressor of the present invention.

[0032] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0033] 1. Compressor base box; 2. Maintenance side door; 21. First support block; 211. First limit rod; 212. Connecting support rod; 213. Second limit rod; 214. Fixed connector; 215. Circular fixed block; 216. First limit convex rod; 217. Fixed block; 218. Second limit convex rod; 219. Spring connector; 22. Support plate; 221. Second support block; 222. Moving wheel; 23. First groove; 231. Second groove; 24. Slot; 241. Block; 3. First motor; 4. Screw main unit; 5. Oil-gas separator; 51. First oil outlet pipe; 6. Remaining Heat recovery box; 7. Mounting plate; 71. Cooling fan; 72. Radiator; 8. Preheating water pipe; 81. Water filter assembly; 82. Connecting water pipe; 83. Second water outlet pipe; 84. Water pump; 9. Oil filter assembly; 91. L-shaped oil inlet pipe; 92. First sealing connector; 93. First serpentine inner and outer connecting pipe; 94. Cooling fins; 95. Second serpentine inner and outer connecting pipe; 96. Second oil outlet pipe; 97. Oil pump; 99. Fixing block; 100. Connecting piece; 101. Internally threaded pipe; 102. External sealing ring; 103. Internal sealing ring; 110. Water inlet pipe; 111. Third water outlet pipe. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example:

[0038] As attached Figure 1 To Attachment Figure 6 As shown:

[0039] The present invention provides a waste heat recovery two-stage compression screw blower air compressor, which is characterized by comprising an air compressor base box 1, a retractable door opening mechanism, a buffer component, a limit support component, a first motor 3, a screw main unit 4, an oil-gas separator 5, a first oil outlet pipe 51, a preheating water pipe 8, a water filter component 81, an oil filter component 9, a waste heat recovery component, and a heat dissipation component, wherein:

[0040] The retractable door opening mechanism is installed on one side of the interior of the air compressor base box 1, the buffer assembly is installed on one side of the bottom of the retractable door opening mechanism, and the limit support assembly is installed on one side of the top of the retractable door opening mechanism;

[0041] The first motor 3, the screw main unit 4, the oil-gas separator 5, the first oil outlet pipe 51, the preheating water pipe 8, the water filter assembly 81, the oil filter assembly 9, the waste heat recovery assembly, and the heat dissipation assembly are all installed inside the air compressor base box 1. The screw main unit 4 is installed on one side of the output end of the first motor 3. The oil-gas separator 5 is located on one side of the screw main unit 4. The waste heat recovery assembly is located on one side of the oil-gas separator 5. The screw main unit 4 is connected to the oil-gas separator 5 through a pipeline. The output end of the oil-gas separator 5 is fixedly connected to the first oil outlet pipe 51. The output end of the first oil outlet pipe 51 is installed with an oil filter assembly 9. One end of the oil filter assembly 9 is connected to the waste heat recovery assembly. One end of the preheating water pipe 8 is connected to a water source. The other end of the preheating water pipe 8 is connected and installed with a water filter assembly 81. One end of the water filter assembly 81 is connected to the waste heat recovery assembly. The heat dissipation assembly is installed on one side inside the air compressor base box 1.

[0042] The retractable door opening mechanism facilitates opening the interior of the air compressor base box 1, thereby performing maintenance and inspection on the interior of the air compressor base box 1. The buffer component provided plays a buffering role when the retractable door opening mechanism is in operation, thereby preventing it from colliding with the air compressor base box 1. The limit support component plays a supporting and limiting role on one side of the retractable door opening mechanism, while also preventing the retractable door opening mechanism from being easily damaged due to gravity. The first motor 3 starts to drive the screw main unit 4 to operate, compressing the air, so that the oil transported to the screw main unit 4 will absorb heat and carry the hot gas through the pipeline into the oil-gas separator 5 for separation. The hot oil enters through the first oil outlet pipe 51 and is filtered by the oil filter assembly 9 and reaches In the waste heat recovery component, impurities in the hot oil are filtered out to prevent clogging of the pipeline in the waste heat recovery component, affecting the heat transfer efficiency, and also affecting the operation of the screw main unit 4. The waste heat recovery component absorbs heat from the hot oil to a great extent. One end of the preheating water pipe 8 is connected to the faucet, and impurities in the water are filtered through the water filter component 81 to prevent water impurities from flowing and adhering to the pipeline of the waste heat recovery component for a long time, causing pipeline blockage and affecting the heat transfer efficiency. Hot air also enters the waste heat recovery component through the pipeline, and the hot oil re-enters the screw main unit 4 after absorbing the heat. The electrical components working inside the air compressor base box 1 will generate heat due to long-term operation. To prevent damage to the electrical components due to overheating, heat will be dissipated through the heat dissipation component.

[0043] Among them, the waste heat recovery component includes a waste heat recovery box 6, the top of the waste heat recovery box 6 is fixedly connected with a water inlet pipe 110, and the bottom of one side of the waste heat recovery box 6 is fixedly connected with a third water outlet pipe 111, and an L-shaped oil inlet pipe 91 is arranged through one side of the waste heat recovery box 6, and the output end of the L-shaped oil inlet pipe 91 is connected to the oil filter component 9, and one end of the water filter component 81 is fixedly connected with a connecting water pipe 82, and the connecting water pipe 82 penetrates into the internal setting of the L-shaped oil inlet pipe 91, and the connecting water pipe 82 is flush with the output end of the L-shaped oil inlet pipe 91, and one end of the L-shaped oil inlet pipe 91 is installed with a first sealing connector 92, and one end of the first sealing connector 92 is fixedly connected with a first serpentine inner and outer layer connecting pipe 93, and the first serpentine inner and outer layer connecting pipe 93 is provided with two groups, and one end of one group of first serpentine inner and outer layer connecting pipes 93 is installed with a second sealing connector, and one end of the second sealing connector is installed A second serpentine inner and outer layer connecting tube 95 is installed, and the second serpentine inner and outer layer connecting tube 95 is arranged in several groups, and the several groups of second serpentine inner and outer layer connecting tubes 95 are fixed to each other through the second sealing connector, and one end of the last group of second serpentine inner and outer layer connecting tubes 95 is fixed to another group of first serpentine inner and outer layer connecting tubes 93 through the second sealing connector, the first serpentine inner and outer layer connecting tube 93 and the second serpentine inner and outer layer connecting tube 95 are double-layer tubes, and the double-layer tubes are fixed to each other through the second fixing block 99, one end of the first serpentine inner and outer layer connecting tube 93 is installed with the first sealing connector 92, one end of the first sealing connector 92 is fixedly connected with the second oil outlet pipe 96, one end of the second oil outlet pipe 96 is connected with 3, and an oil pump 97 is installed inside, and a second water outlet pipe 83 is penetrated through one side of the second oil outlet pipe 96, and a water pump 84 is installed at one end of the second water outlet pipe 83.

[0044] The liquid to be heated is injected into the waste heat recovery tank 6 through the water inlet pipe 110, the L-shaped oil inlet pipe 91 transports the hot oil that needs waste heat recovery after being filtered by the oil filter component 9 to the first serpentine inner and outer layer connecting pipe 93, the connecting water pipe 82 also transports the water filtered by the water filter component 81 to the first serpentine inner and outer layer connecting pipe 93, and finally transports them together to several groups of second serpentine inner and outer layer connecting pipes 95 for continuous heat transfer, thereby greatly cooling the hot oil by heat transfer, and finally transports them together to the second oil outlet pipe 96 through another group of first serpentine inner and outer layer connecting pipes 93 for outflow, the flow rate of the hot oil can be accelerated by the set oil pump 97, the hot water flows out through the second water outlet pipe 83 and is transported to the required place, the water flow rate can be accelerated by the set water pump 84, and the liquid in the waste heat recovery tank 6 can be discharged through the third water outlet pipe 111 when it reaches a certain temperature, and transported to other required places, and then new liquid is re-introduced from the water inlet pipe 110 for heat exchange.

[0045] Among them, the second sealing connection part includes a connecting part 100, the interior of the connecting part 100 is a double-layer tube setting, and corresponds to the size of the first serpentine inner and outer layer connecting tube 93 and the second serpentine inner and outer layer connecting tube 95, the outside of both sides of the connecting part 100 are threadedly connected with internal threaded tubes 101, the outer sides of the connecting part 100 are fixedly connected with outer sealing rings 102, and the inner sides of the connecting part 100 are fixedly connected with inner sealing rings 103.

[0046] The water inlet pipe 110 is used to align with the position where the first serpentine inner and outer layer connecting tube 93 and the second serpentine inner and outer layer connecting tube 95 need to be connected, and the internal threaded tube 101 is rotated to make it threadedly connected to the first serpentine inner and outer layer connecting tube 93 and the second serpentine inner and outer layer connecting tube 95 on both sides and fixed, and the external sealing ring 102 and the internal sealing ring 103 are used to perform a sealing function to prevent liquid leakage from the gaps.

[0047] Among them, two layers of filter screens are installed inside the water filter component 81, one layer of filter screen is filled with filter cotton, and the other layer of filter screen is filled with activated carbon. The oil filter component 9 is installed with filter screens on both sides, one layer of filter screen is not filled, and the other layer of filter screen is filled with paper and activated carbon.

[0048] The water filter component 81 can filter impurities and water alkali in the water to prevent them from adhering to the inside of the pipe, which will lead to reduced heat transfer efficiency and blockage. The oil filter component 9 can filter dust and impurities adsorbed by the lubricating oil through the screw main unit 4, thereby extending the service life of the lubricating oil and improving the efficiency of waste heat recovery.

[0049] Among them, a plurality of groups of symmetrical heat dissipation fins 94 are fixedly connected to the outer sides of the first serpentine inner and outer layer connecting tube 93 and the second serpentine inner and outer layer connecting tube 95 .

[0050] The heat dissipation fins 94 are provided to allow the hot oil to transfer over a larger contact area, thereby increasing the heat transfer efficiency to the liquid in the waste heat recovery tank 6 .

[0051] Among them, the retractable door opening mechanism includes a support plate 22, which is fixed on one side of the interior of the air compressor base box 1, and one side of the support plate 22 is fixedly connected with a second limit rod 213, and the outer side of the second limit rod 213 is rotatably connected with a connecting support rod 212, and the other end of the connecting support rod 212 is penetrated by a first limit rod 211, and the first limit rod 211 is rotatably connected to the connecting support rod 212, and one side of the first limit rod 211 is fixedly connected with a first support block 21, and the top of the first support block 21 is fixedly connected with a maintenance side door 2.

[0052] Lifting the maintenance side door 2 upwards will move the connecting support rod 212 on the first limiting rod 211, and then the connecting support rod 212 can be rotated by fixing the second limiting rod 213 on the support plate 22, and at the same time, the maintenance side door 2 can be stored in the interior of the air compressor base box 1.

[0053] Among them, the buffer assembly includes a fixed connector 214, which is fixedly connected to one side of the connecting support rod 212 located on the outside of the second limiting rod 213, and one end of the fixed connector 214 is fixedly connected to a circular fixed block 215, one side of the circular fixed block 215 is fixedly connected to a first limiting protrusion 216, and the outside of the first limiting protrusion 216 is fixedly connected to a spring connector 219. A fixed block 217 is provided on one side of the interior of the air compressor base box 1 and at the bottom of the support plate 22. The fixed block 217 is fixedly connected to the air compressor base box 1, and one side of the fixed block 217 is fixedly connected to a second limiting protrusion 218. The second limiting protrusion 218 is connected to the first limiting protrusion 216 through a spring connector 219, and the other end of the spring connector 219 is fixed to the outside of the second limiting protrusion 218.

[0054] When the maintenance side door 2 is lowered, the connecting support rod 212 is rotated to allow it to rotate through the fixed connecting piece 214 on one side of the second limiting rod 213, thereby driving the circular fixing block 215 to rotate, and finally driving the first limiting protrusion 216 to rotate, which will drive the spring connecting piece 219 connected and fixed between the first limiting protrusion 216 and the second limiting protrusion 218 to stretch, which can play a buffering role.

[0055] The position-limiting support assembly includes a second support block 221 , which is fixedly connected to the bottom of the maintenance side door 2 , and a moving wheel 222 is installed on one side of the second support block 221 , which rolls on the support plate 22 .

[0056] The second support block 221 facilitates the installation of the moving wheel 222. When the maintenance side door 2 is operated, the moving wheel 222 will continue to roll on the support plate 22, playing a certain supporting role and sharing part of the gravity of the retractable door opening mechanism. At the same time, it will not let the maintenance side door 2 shake during the movement, thereby increasing a certain stability.

[0057] Furthermore, the heat dissipation assembly includes a mounting plate 7, which is fixedly connected to an inner side of the air compressor base box 1, a heat dissipation fan water filter assembly 71 is installed through one side of the mounting plate 7, a radiator 82 is installed on one side of the air compressor base box 1, and the radiator 82 and the heat dissipation fan water filter assembly 71 are located on the same side of the interior of the air compressor base box 1.

[0058] The mounting plate 7 facilitates the installation and fixation of the heat dissipation fan 71 . The heat dissipation fan 71 dissipates heat inside, and the radiator 72 also dissipates heat inside.

[0059] A first groove 23 is formed at the bottom of the front surface of the maintenance side door 2 , and a second groove 231 is formed at the inner bottom end of the first groove 23 .

[0060] The second groove 231 cooperates with the first groove 23 to facilitate putting a hand in, thereby leveraging the force to drive the maintenance side door 2 to move.

[0061] A clamping block 241 is fixedly connected to the bottom of the maintenance side door 2 , and a clamping slot 24 for the clamping block 241 to be clamped into is provided at the inner bottom of the air compressor base box 1 .

[0062] The clamping block 241 is clamped into the clamping slot 24 to limit and fix the maintenance side door 2, and the maintenance side door 2 will not shake back and forth.

[0063] The specific usage and function of this embodiment are as follows:

[0064] When in use, when the screw main unit 4 is in operation, the oil in the screw main unit 4 absorbs heat and enters the oil-gas separator 5 through the pipeline for separation with hot gas, and the hot oil enters the waste heat recovery component through the first oil outlet pipe 51, is filtered by the oil filter component 9, and reaches the waste heat recovery component. One end of the preheating water pipe 8 is connected to the faucet, and impurities in the water are filtered through the water filter component 81. The liquid to be heated is injected into the waste heat recovery tank 6 through the water inlet pipe 110, and the L-shaped oil inlet pipe 91 transports the hot oil that needs to be recovered after being filtered by the oil filter component 9 to the first serpentine In the inner and outer layer connecting pipes 93, the connecting water pipe 82 also transports the water filtered by the water filter assembly 81 to the first serpentine inner and outer layer connecting pipes 93, and finally transports them together to a plurality of second serpentine inner and outer layer connecting pipes 95 for continuous heat transfer, thereby greatly transferring and cooling the hot oil, and finally the hot oil flows out to the second oil outlet pipe 96, and the flow rate of the hot oil can be accelerated by the oil pump 97, and the hot water flows out through the second water outlet pipe 83 and is transported to the required place. The water pump 84 can be used to accelerate the speed of the water flow, and the waste heat recovery tank 6 When the liquid in the air compressor reaches a certain temperature, it can be discharged through the third water outlet pipe 111, and new liquid can be re-introduced from the water inlet pipe 110 for heat exchange. The hand is inserted into the first groove 23, so as to use the force to lift the maintenance side door 2. The maintenance side door 2 can be lifted upward to make the connecting support rod 212 on the first limit rod 211 move, and then the second limit rod 213 is fixed on the support plate 22 to make the connecting support rod 212 rotate, and the maintenance side door 2 is stored in the interior of the air compressor base box 1. When the maintenance side door 2 is operated, the moving wheel 22 2 will roll on the support plate 22 following the angle of the maintenance side door 2, thereby facilitating daily maintenance, inspection and cleaning of the interior of the air compressor base box 1. When the maintenance side door 2 is lowered, the connecting support rod 212 rotates to allow it to rotate through the second limiting rod 213 on one side to fix the fixed connecting member 214, thereby driving the circular fixing block 215 to rotate, and finally driving the first limiting convex rod 216 to rotate, which will drive the spring connecting member 219 connected and fixed between the first limiting convex rod 216 and the second limiting convex rod 218 to stretch, which can play a buffering role.

[0065] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A waste heat recovery two-stage compression screw blower air compressor, characterized in that: It comprises an air compressor base box (1), a retractable door opening mechanism, a buffer assembly, a limit support assembly, a first motor (3), a screw main unit (4), an oil-gas separator (5), a first oil outlet pipe (51), a preheating water pipe (8), a water filter assembly (81), an oil filter assembly (9), a waste heat recovery assembly, and a heat dissipation assembly, wherein: The retractable door opening mechanism is installed on one side of the interior of the air compressor base box (1), the buffer assembly is installed on one side of the bottom of the retractable door opening mechanism, and the limit support assembly is installed on one side of the top of the retractable door opening mechanism; The first motor (3), the screw main unit (4), the oil-gas separator (5), the first oil outlet pipe (51), the preheating water pipe (8), the water filter assembly (81), the oil filter assembly (9), the waste heat recovery assembly, and the heat dissipation assembly are all installed inside the air compressor base box (1); the screw main unit (4) is installed on one side of the output end of the first motor (3); the oil-gas separator (5) is located on one side of the screw main unit (4); the waste heat recovery assembly is located on one side of the oil-gas separator (5); the screw main unit (4) and the oil-gas separator ( 5) is connected through a pipeline, the output end of the oil-gas separator (5) is fixedly connected to a first oil outlet pipe (51), the output end of the first oil outlet pipe (51) is installed with an oil filter component (9), one end of the oil filter component (9) is connected to the waste heat recovery component, one end of the preheating water pipe (8) is connected to a water source, the other end of the preheating water pipe (8) is connected and installed with a water filter component (81), one end of the water filter component (81) is connected to the waste heat recovery component, and the heat dissipation component is installed on one side of the interior of the air compressor base box (1).

2. A waste heat recovery two-stage compression screw blower air compressor as claimed in claim 1, characterized in that: The waste heat recovery component comprises a waste heat recovery box (6), the top of the waste heat recovery box (6) is fixedly connected to a water inlet pipe (110), the bottom of one side of the waste heat recovery box (6) is fixedly connected to a third water outlet pipe (111), one side of the waste heat recovery box (6) is penetrated by an L-shaped oil inlet pipe (91), the output end of the L-shaped oil inlet pipe (91) is connected to the oil filter component (9), one end of the water filter component (81) is fixedly connected to a connecting water pipe (82), and the connecting water pipe (82) The connecting water pipe (82) is arranged to penetrate the interior of the L-shaped oil inlet pipe (91), the connecting water pipe (82) is flush with the output end of the L-shaped oil inlet pipe (91), one end of the L-shaped oil inlet pipe (91) is installed with a first sealing connector (92), one end of the first sealing connector (92) is fixedly connected with a first serpentine inner and outer layer connecting pipe (93), the first serpentine inner and outer layer connecting pipe (93) is provided with two groups, one end of the first serpentine inner and outer layer connecting pipe (93) is installed with a second sealing connector, the second sealing connector A second serpentine inner and outer layer connecting tube (95) is installed at one end of the connecting piece. The second serpentine inner and outer layer connecting tube (95) is provided in a plurality of groups, and the plurality of groups of the second serpentine inner and outer layer connecting tubes (95) are fixed to each other through a second sealing connecting piece. One end of the last group of the second serpentine inner and outer layer connecting tubes (95) is fixed to another group of the first serpentine inner and outer layer connecting tubes (93) through a second sealing connecting piece. The first serpentine inner and outer layer connecting tube (93) and the second serpentine inner and outer layer connecting tube (95) are double-layer tubes, and the double The layer pipes are fixed to each other by a second fixing block (99); one end of the first serpentine inner and outer layer connecting pipe (93) is installed with a first sealing connector (92); one end of the first sealing connector (92) is fixedly connected with a second oil outlet pipe (96); one end of the second oil outlet pipe (96) is connected with (3) and an oil pump (97) is installed inside; a second water outlet pipe (83) is penetrated by one side of the second oil outlet pipe (96); one end of the second water outlet pipe (83) is installed with a water pump (84).

3. A waste heat recovery two-stage compression screw blower air compressor as claimed in claim 2, characterized in that: The second sealing connection piece includes a connecting piece (100), the interior of the connecting piece (100) is a double-layer tube arrangement, and the size corresponds to the first serpentine inner and outer layer connecting tube (93) and the second serpentine inner and outer layer connecting tube (95), both sides of the connecting piece (100) are threadedly connected to internal threaded tubes (101), both sides of the outer tube of the connecting piece (100) are fixedly connected to external sealing rings (102), and both sides of the inner tube of the connecting piece (100) are fixedly connected to internal sealing rings (103).

4. The waste heat recovery two-stage compression screw blower air compressor according to claim 1, characterized in that: The water filter assembly (81) is internally installed with two layers of filter screens, one layer of filter screen is filled with filter cotton, and the other layer of filter screen is filled with activated carbon. The oil filter assembly (9) is internally installed with two sides of filter screens, one layer of filter screen is not filled, and the other layer of filter screen is filled with paper and activated carbon.

5. A waste heat recovery two-stage compression screw blower air compressor as claimed in claim 3, characterized in that: The outer sides of the first serpentine inner and outer layer connecting tube (93) and the second serpentine inner and outer layer connecting tube (95) are both fixedly connected with a plurality of groups of symmetrical heat dissipation fins (94).

6. A waste heat recovery two-stage compression screw blower air compressor as claimed in claim 1, characterized in that: The retractable door opening mechanism comprises a support plate (22), wherein the support plate (22) is fixed to one side of the interior of the air compressor base box (1), and a second limit rod (213) is fixedly connected to one side of the support plate (22), and a connecting support rod (212) is rotatably connected to the outer side of the second limit rod (213), and a first limit rod (211) is penetrated through the other end of the connecting support rod (212), and the first limit rod (211) is rotatably connected to the connecting support rod (212), and a first support block (21) is fixedly connected to one side of the first limit rod (211), and a maintenance side door (2) is fixedly connected to the top of the first support block (21).

7. The waste heat recovery two-stage compression screw blower air compressor according to claim 1, characterized in that: The buffer assembly comprises a fixed connection member (214), wherein the fixed connection member (214) is fixedly connected to one side of the connecting support rod (212) located outside the second limiting rod (213), one end of the fixed connection member (214) is fixedly connected to a circular fixing block (215), one side of the circular fixing block (215) is fixedly connected to a first limiting convex rod (216), and the outer side of the first limiting convex rod (216) is fixedly connected to a spring connection member (219), which is located on the air compressor base box (1 ) is provided with a first fixed block (217) at one inner side and at the bottom of the support plate (22), the first fixed block (217) is fixedly connected to the air compressor base box (1), a second limiting protrusion (218) is fixedly connected to one side of the first fixed block (217), the second limiting protrusion (218) is connected to the first limiting protrusion (216) via the spring connecting member (219), and the other end of the spring connecting member (219) is fixed to the outer side of the second limiting protrusion (218).

8. The waste heat recovery two-stage compression screw blower air compressor according to claim 1, characterized in that: The position-limiting support assembly comprises a second support block (221), the second support block (221) being fixedly connected to the bottom of the maintenance side door (2), a moving wheel (222) being installed on one side of the second support block (221), and the moving wheel (222) rolling on the support plate (22).

9. The waste heat recovery two-stage compression screw blower air compressor according to claim 1, characterized in that: The heat dissipation component comprises a mounting plate (7), wherein the mounting plate (7) is fixedly connected to one side of the interior of the air compressor base box (1), a heat dissipation fan water filter component (71) is installed through one side of the mounting plate (7), a radiator (82) is installed on one side of the air compressor base box (1), and the radiator (82) and the heat dissipation fan water filter component (71) are located on the same side of the interior of the air compressor base box (1).

10. The waste heat recovery two-stage compression screw blower air compressor according to claim 2, characterized in that: A first groove (23) is provided at the bottom of the front surface of the maintenance side door (2), and a second groove (231) is provided at the inner bottom end of the first groove (23).

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