CN111649606A - Oil heat load recovery system of air compressor - Google Patents
Oil heat load recovery system of air compressor Download PDFInfo
- Publication number
- CN111649606A CN111649606A CN202010559493.8A CN202010559493A CN111649606A CN 111649606 A CN111649606 A CN 111649606A CN 202010559493 A CN202010559493 A CN 202010559493A CN 111649606 A CN111649606 A CN 111649606A
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- Prior art keywords
- oil
- pipe
- water
- oil heat
- recovery
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses an air compressor oil heat load recovery system which comprises an oil inlet pipe and an oil heat recovery assembly, wherein the lower end of the oil inlet pipe is fixedly connected with the middle position of the upper end of the oil heat recovery assembly, an electromagnetic valve is installed on the oil inlet pipe, a temperature sensor is installed above the inside of the oil inlet pipe, a purification assembly is installed at the lower end of the oil heat recovery assembly, a water supply assembly is installed on one side of the oil heat recovery assembly, and an electric control cabinet and a PLC (programmable logic controller) are installed above two sides of the water supply assembly. According to the invention, through the cooperation between the water supply assemblies, the recovered water enters the water supply tank through the water outlet pipe, the first filter screen performs primary filtration on the recovered water, and when the water is recovered to the book in the recovery pipe through the water inlet pipe, the second filter screen performs secondary filtration on the recovered water, so that impurities in the recovered water are thoroughly filtered, clean recovered water is conveyed to the recovery pipe, the blockage caused by the impurities entering the recovery pipe is avoided, and the recycling of the recovered water is facilitated.
Description
Technical Field
The invention relates to the technical field of air compressor oil heat load recovery equipment, in particular to an air compressor oil heat load recovery system.
Background
At the present stage, engine oil in the air compressor is mainly cooled by air, a fan is used for driving the fan to operate, the temperature of the engine oil is reduced, the machine can normally operate, and all generated heat is discharged into the atmosphere, so that on one hand, oil heat resources in the air compressor are wasted, and on the other hand, the air compressor is easily overhigh in temperature and an air compressor machine room is overhigh in temperature.
For example, an authorized publication No. CN 209164097U discloses an oil heat recovery system for a refrigerator, which achieves the advantage of effectively utilizing return heat, but does not solve the problems that the existing oil heat load recovery system is used for a long time, contains impurities inside, is easy to block the oil heat load recovery system, and is not beneficial to recycling of recovered water, and therefore, an air compressor oil heat load recovery system is proposed.
Disclosure of Invention
The invention aims to solve the problems that the recovered water of the existing oil heat load recovery system is used for a long time, the inside of the oil heat load recovery system contains impurities, the oil heat load recovery system is easy to block, and the recycling of the recovered water is not facilitated.
In order to achieve the purpose, the invention adopts the following technical scheme:
an air compressor oil heat load recovery system comprises an oil inlet pipe and an oil heat recovery assembly, wherein the lower end of the oil inlet pipe is fixedly connected with the middle position of the upper end of the oil heat recovery assembly, an electromagnetic valve is mounted on the oil inlet pipe, a temperature sensor is mounted above the inside of the oil inlet pipe, a purification assembly is mounted at the lower end of the oil heat recovery assembly, a water supply assembly is mounted on one side of the oil heat recovery assembly, and an electric control cabinet and a PLC (programmable logic controller) are mounted above two sides of the water supply assembly;
the utility model discloses a water supply assembly, including water supply tank, water supply tank and water supply tank, water supply tank includes the water supply tank, the side at oily heat recovery subassembly is installed to the water supply tank, the moisturizing pipe is installed to the top of water supply tank, first filter screen is installed to the inside top of water supply tank, the inside below of water supply tank is close to one side of oily heat recovery subassembly and installs the second filter screen, the liquid level window is installed to one side that oily heat recovery subassembly was kept away from.
Preferably, the electric control cabinet is electrically connected with a mains supply through a wire, the PLC controller is electrically connected with the electric control cabinet through a wire, the PLC controller is FX1S-30MR-001, the temperature sensor is electrically connected with the PLC controller and the electric control cabinet through wires, the temperature sensor is CWDZ11, the electromagnetic valve is electrically connected with the PLC controller and the electric control cabinet through wires, the electromagnetic valve is 2W-320-32K, the water supplementing pipe is provided with a rotary cover, the liquid level window is made of acrylic materials, and the upper end of the oil inlet pipe is connected with an oil tank of the air compressor.
Preferably, the oil heat recovery subassembly includes the oil heat recovery case, the intermediate position of oil heat recovery case top links to each other with the lower extreme stationary phase that advances oil pipe, the recovery pipe is installed in the outside of oil heat recovery case, one side that the recovery pipe lower extreme is close to the feed water tank is provided with the inlet tube, one side that the recovery pipe upper end is close to the feed water tank is provided with the outlet pipe, the circulating pump is installed to the inlet tube.
Preferably, the recovery pipe sets up with inlet tube and outlet pipe formula as an organic whole, the end of outlet pipe links to each other with the inside top of feed water tank, the water inlet of circulating pump passes through the pipeline and links to each other with the inside below of feed water tank, the pipeline of the water inlet of circulating pump aligns with the second filter screen, the circulating pump passes through the wire and links to each other with PLC controller and automatically controlled cabinet electrical property respectively, the circulating pump chooses for use the WP-16000DP type.
Preferably, purify the subassembly and include the purifying box, the purifying box passes through the purge tube and links to each other with the lower extreme of oily heat recovery case, the sleeve is installed to the intermediate position of the inside top of purifying box, the purification filter screen is installed to telescopic lower extreme, the intermediate position of purifying box below is installed back the oil pipe, it installs the measuring pump to return the oil pipe.
Preferably, telescopic upper end is located the outside of purge tube, the size of purifying the filter screen matches with telescopic size, return oil pipe and air compressor's oil tank and link to each other, the measuring pump passes through the wire and links to each other with PLC controller and automatically controlled cabinet electrical property respectively, the measuring pump chooses for use LY-JLM type.
Compared with the prior art, the invention has the beneficial effects that:
1. through the cooperation work between the water supply unit, in the recovered water got into the supply tank through the outlet pipe, first filter screen carried out the prefilter to the recovered water, when carrying the recovered water in toward the recovery pipe through the inlet tube, the second filter screen carries out the secondary filter to the recovered water, thoroughly the impurity of filtering recovered water, guarantee to carry clean recovered water for the recovery pipe, avoid impurity to get into in the recovery pipe and cause the jam, be favorable to the cyclic utilization of recovered water, the water valve is convenient for operating personnel to use the hot water in the supply tank.
2. Through the cooperation work between the oily heat recovery subassembly, when temperature sensor detected the fluid temperature in the air compressor and reached the setting value, PLC controller control solenoid valve, measuring pump and circulating pump operation, carry the fluid in the air compressor to oily heat recovery incasement through advancing oil pipe, the circulating pump is carried the reclaimed water to in the recovery pipe simultaneously, conduct the heat of fluid to in the reclaimed water, when reaching the reduction fluid temperature, retrieve the heat of fluid, the measuring pump is carried refrigerated fluid to the oil tank of air compressor again in, avoid the oily heat resource among the extravagant air compressor on the one hand, on the other hand prevents that the air compressor temperature is too high and the temperature of air compressor computer lab is too high.
3. Through the cooperation between the purification subassembly, fluid when passing through the purification subassembly, the purification filter screen filters fluid, and solid impurity in the filtering fluid reaches the purpose of purifying fluid, avoids in the solid impurity in the fluid reentrant air compressor's the oil tank.
Drawings
FIG. 1 is a schematic structural diagram of an air compressor oil heat load recovery system according to the present invention;
fig. 2 is a schematic structural diagram of an oil heat recovery assembly of an air compressor oil heat load recovery system according to the present invention.
Fig. 3 is a schematic structural diagram of a purge component of an air compressor oil heat load recovery system according to the present invention.
Fig. 4 is a schematic structural diagram of a water supply assembly of an air compressor oil heat load recovery system according to the present invention.
In the figure: 1 advance oil pipe, 2 temperature sensor, 3 solenoid valves, 4 oily heat recovery subassemblies, 41 oily heat recovery casees, 42 recovery pipes, 43 inlet tubes, 44 outlet pipes, 45 circulating pumps, 5 purification subassemblies, 51 purifying box, 52 purifying tube, 53 sleeves, 54 purification filter screens, 55 return oil pipe, 56 measuring pumps, 6 water supply subassemblies, 61 water supply boxes, 62 moisturizing pipes, 63 first filter screen, 64 second filter screen, 65 liquid level window, 7 automatically controlled cabinets, 8PLC controllers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an air compressor oil heat load recovery system comprises an oil inlet pipe 1 and an oil heat recovery assembly 4, wherein the lower end of the oil inlet pipe 1 is fixedly connected with the middle position of the upper end of the oil heat recovery assembly 4, an electromagnetic valve 3 is installed on the oil inlet pipe 1, a temperature sensor 2 is installed above the inside of the oil inlet pipe 1, a purification assembly 5 is installed at the lower end of the oil heat recovery assembly 4, a water supply assembly 6 is installed at one side of the oil heat recovery assembly 4, and an electric control cabinet 7 and a PLC controller 8 are installed above the two sides of the water supply assembly 6;
the water supply assembly 6 comprises a water supply tank 61, the water supply tank 61 is arranged on the side surface of the oil heat recovery assembly 4, a water replenishing pipe 62 is arranged above the water supply tank 61, a first filter screen 63 is arranged above the water supply tank 61, a second filter screen 64 is arranged on one side of the inner lower part of the water supply tank 61 close to the oil heat recovery assembly 4, a liquid level window 65 is arranged on one side of the inner lower part of the water supply tank 61 far away from the oil heat recovery assembly 4, a water valve 66 is arranged below the water supply tank 61 close to one side of the electric control cabinet 7, the recovered water enters the water supply tank 61 through a water outlet pipe 44, the first filter screen 63 primarily filters the recovered water, when the recovered water is conveyed into the recovery pipe 42 through a water inlet pipe 43, the second filter screen 64 secondarily filters the recovered water to thoroughly filter impurities in the recovered water, the clean recovered water is ensured to be conveyed to the recovery pipe 42, the impurities are prevented from entering the recovery pipe, the water valve 66 facilitates the use of the hot water in the water supply tank 61 by the operator.
In this embodiment, preferably, the electric control cabinet 7 is electrically connected to the mains supply through a wire, the PLC controller 8 is electrically connected to the electric control cabinet 7 through a wire, the PLC controller 8 is selected from the FX1S-30MR-001 type, the temperature sensor 2 is electrically connected to the PLC controller 8 and the electric control cabinet 7 through wires, the temperature sensor 2 is selected from the CWDZ11 type, the solenoid valve 3 is electrically connected to the PLC controller 8 and the electric control cabinet 7 through wires, the solenoid valve 3 is selected from the 2W-320-32K type, the water replenishing pipe 62 is provided with a screw cap, the liquid level window 65 is made of an acrylic material, the upper end of the oil inlet pipe 1 is connected to the oil tank of the air compressor, the electric control cabinet 7 is powered by the mains supply, the PLC controller 8 is powered on to operate for system control, the liquid level window 65 facilitates an operator to observe the liquid level value in the water supply tank 61 in real time, when the liquid level value in the water supply tank 61 is low, ensuring the normal operation of the water supply assembly 6.
In this embodiment, preferably, the oil heat recovery assembly 4 includes an oil heat recovery tank 41, the middle position above the oil heat recovery tank 41 is fixedly connected to the lower end of the oil inlet pipe 1, a recovery pipe 42 is installed outside the oil heat recovery tank 41, a water inlet pipe 43 is installed at one side of the lower end of the recovery pipe 42 close to the water supply tank 61, a water outlet pipe 44 is installed at one side of the upper end of the recovery pipe 42 close to the water supply tank 61, a circulating pump 45 is installed on the water inlet pipe 43, when the temperature sensor 2 detects that the temperature of the oil in the air compressor reaches a set value, the PLC controller 8 controls the operation of the electromagnetic valve 3, the metering pump 56 and the circulating pump 45, the oil in the air compressor is delivered into the oil heat recovery tank 41 through the oil inlet pipe 1, and the circulating pump 45 delivers the recovered water into the recovery pipe 42, the heat of the oil is conducted into the recovered water, the metering pump 56 transports the cooled oil liquid to the oil tank of the air compressor again, so that on one hand, the waste of oil heat resources in the air compressor is avoided, and on the other hand, the overhigh temperature of the air compressor and the overhigh temperature of the machine room of the air compressor are prevented.
In this embodiment, preferably, the recycling pipe 42 is integrally provided with the water inlet pipe 43 and the water outlet pipe 44, the end of the water outlet pipe 44 is connected to the upper part inside the water supply tank 61, the water inlet of the circulating pump 45 is connected to the lower part inside the water supply tank 61 through a pipeline, the pipeline of the water inlet of the circulating pump 45 is aligned to the second filter screen 64, the circulating pump 45 is electrically connected to the PLC controller 8 and the electric control cabinet 7 through a wire, the circulating pump 45 is of WP-16000DP type, the circulating pump 45 is convenient to convey the recycled water in the water supply tank 61 to the recycling pipe 42, so that the recycled water circulates between the recycling pipe 42 and the water supply tank 61, and the purposes of recycling the oil heat and reducing the oil temperature are.
In this embodiment, preferably, the purification assembly 5 includes a purification box 51, the purification box 51 is connected with the lower end of the oil heat recovery box 41 through a purification pipe 52, a sleeve 53 is installed at the middle position above the inside of the purification box 51, a purification filter screen 54 is installed at the lower end of the sleeve 53, an oil return pipe 55 is installed at the middle position below the purification box 51, a metering pump 56 is installed on the oil return pipe 55, when oil passes through the purification assembly 5, the purification filter screen 54 filters the oil, solid impurities in the oil are filtered, the purpose of purifying the oil is achieved, and the solid impurities in the oil are prevented from reentering the oil tank of the air compressor.
In this embodiment, preferably, the upper end of the sleeve 53 is located outside the purifying pipe 52, the size of the purifying filter screen 54 is matched with the size of the sleeve 53, the oil return pipe 55 is connected with the oil tank of the air compressor, the metering pump 56 is electrically connected with the PLC controller 8 and the electric control cabinet 7 through wires, the metering pump 56 is of a LY-JLM type, the sleeve 53 facilitates purifying the filter screen 54, and the stability of fixing the purifying filter screen 54 is ensured.
In the invention, when in use, the electric control cabinet 7 is connected with commercial power to supply power to the system, the PLC controller 8 is electrified to operate for system control, the liquid level window 65 is convenient for an operator to observe the liquid level value in the water supply tank 61 in real time, when the liquid level value in the water supply tank 61 is lower, water is supplemented into the water supply tank 61 through the water supplementing pipe 62 to ensure the normal operation of the water supply assembly 6, when the temperature sensor 2 detects that the temperature of the oil liquid in the air compressor reaches a set value, the PLC controller 8 controls the electromagnetic valve 3, the metering pump 56 and the circulating pump 45 to operate to convey the oil liquid in the air compressor into the oil heat recovery tank 41 through the oil inlet pipe 1, meanwhile, the circulating pump 45 conveys the recovered water into the recovery pipe 42 to conduct the heat of the oil liquid into the recovered water to reduce the temperature of the oil liquid and recover the heat of the oil liquid, and the cooled oil, avoid the oily heat resource among the extravagant air compressor on the one hand, on the other hand prevents the high temperature of air compressor high temperature and air compressor computer lab, it passes through in outlet pipe 44 gets into supply tank 61 to retrieve water, first filter screen 63 carries out the prefilter to retrieving water, when carrying the recovery water in toward recovery tube 42 through inlet tube 43, second filter screen 64 carries out the secondary filter to retrieving water, thoroughly filter the impurity in the recovery water, guarantee to carry clean recovery water for recovery tube 42, avoid impurity to get into in the recovery tube 42 and cause the jam, be favorable to the cyclic utilization of recovery water, water valve 66 is convenient for operating personnel to use the hot water in the supply tank 61.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. An air compressor oil heat load recovery system comprises an oil inlet pipe (1) and an oil heat recovery assembly (4), and is characterized in that the lower end of the oil inlet pipe (1) is fixedly connected with the middle position of the upper end of the oil heat recovery assembly (4), an electromagnetic valve (3) is installed on the oil inlet pipe (1), a temperature sensor (2) is installed above the inside of the oil inlet pipe (1), a purification assembly (5) is installed at the lower end of the oil heat recovery assembly (4), a water supply assembly (6) is installed on one side of the oil heat recovery assembly (4), and an electric control cabinet (7) and a PLC (8) are installed above two sides of the water supply assembly (6);
water supply assembly (6) include feed water tank (61), the side in oily heat recovery subassembly (4) is installed in feed water tank (61), moisturizing pipe (62) are installed to the top of feed water tank (61), first filter screen (63) are installed to the top of feed water tank (61) inside, second filter screen (64) are installed to one side that feed water tank (61) inside below is close to oily heat recovery subassembly (4), one side that feed water tank (61) inside below was kept away from oily heat recovery subassembly (4) installs liquid level window (65), water valve (66) are installed to the below that feed water tank (61) is close to electric cabinet (7) one side.
2. The air compressor oil heat load recovery system according to claim 1, wherein the electric control cabinet (7) is electrically connected with a mains supply through a wire, the PLC controller (8) is electrically connected with the electric control cabinet (7) through a wire, the temperature sensor (2) is electrically connected with the PLC controller (8) and the electric control cabinet (7) through wires, the electromagnetic valve (3) is electrically connected with the PLC controller (8) and the electric control cabinet (7) through wires, the water replenishing pipe (62) is provided with a screw cap, and the upper end of the oil inlet pipe (1) is connected with an oil tank of the air compressor.
3. The air compressor oil heat load recovery system according to claim 1, wherein the oil heat recovery assembly (4) comprises an oil heat recovery tank (41), the middle position above the oil heat recovery tank (41) is fixedly connected with the lower end of the oil inlet pipe (1), a recovery pipe (42) is installed outside the oil heat recovery tank (41), a water inlet pipe (43) is arranged at one side of the lower end of the recovery pipe (42) close to the water supply tank (61), a water outlet pipe (44) is arranged at one side of the upper end of the recovery pipe (42) close to the water supply tank (61), and a circulating pump (45) is installed on the water inlet pipe (43).
4. An air compressor oil heat load recovery system according to claim 3, characterized in that the recovery pipe (42) is integrally provided with a water inlet pipe (43) and a water outlet pipe (44), the end of the water outlet pipe (44) is connected with the upper part of the inside of the water supply tank (61), the water inlet of the circulation pump (45) is connected with the lower part of the inside of the water supply tank (61) through a pipeline, the pipeline of the water inlet of the circulation pump (45) is aligned with the second filter screen (64), and the circulation pump (45) is electrically connected with the PLC controller (8) and the electric control cabinet (7) through wires respectively.
5. The air compressor oil heat load recovery system according to claim 1, wherein the purification assembly (5) comprises a purification box (51), the purification box (51) is connected with the lower end of the oil heat recovery box (41) through a purification pipe (52), a sleeve (53) is installed at a middle position above the inside of the purification box (51), a purification filter screen (54) is installed at the lower end of the sleeve (53), an oil return pipe (55) is installed at a middle position below the purification box (51), and a metering pump (56) is installed on the oil return pipe (55).
6. The air compressor oil heat load recovery system according to claim 5, wherein the upper end of the sleeve (53) is located outside the purifying pipe (52), the purifying filter screen (54) is matched with the sleeve (53), the oil return pipe (55) is connected with an oil tank of the air compressor, and the metering pump (56) is electrically connected with the PLC (8) and the electric control cabinet (7) through wires respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559493.8A CN111649606A (en) | 2020-06-18 | 2020-06-18 | Oil heat load recovery system of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559493.8A CN111649606A (en) | 2020-06-18 | 2020-06-18 | Oil heat load recovery system of air compressor |
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| Publication Number | Publication Date |
|---|---|
| CN111649606A true CN111649606A (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010559493.8A Pending CN111649606A (en) | 2020-06-18 | 2020-06-18 | Oil heat load recovery system of air compressor |
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| CN (1) | CN111649606A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141572U (en) * | 1985-02-22 | 1986-09-01 | ||
| CN201836023U (en) * | 2010-09-11 | 2011-05-18 | 东营市天信纺织有限公司 | Air compressor thermal energy recovery device |
| CN206816470U (en) * | 2017-03-25 | 2017-12-29 | 南京榆液液压有限公司 | A kind of afterheat recovery unit of air compressor |
| CN207673513U (en) * | 2018-01-09 | 2018-07-31 | 惠州市光华机电设备有限公司 | A kind of residual heat of air compressor recycling machine |
-
2020
- 2020-06-18 CN CN202010559493.8A patent/CN111649606A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141572U (en) * | 1985-02-22 | 1986-09-01 | ||
| CN201836023U (en) * | 2010-09-11 | 2011-05-18 | 东营市天信纺织有限公司 | Air compressor thermal energy recovery device |
| CN206816470U (en) * | 2017-03-25 | 2017-12-29 | 南京榆液液压有限公司 | A kind of afterheat recovery unit of air compressor |
| CN207673513U (en) * | 2018-01-09 | 2018-07-31 | 惠州市光华机电设备有限公司 | A kind of residual heat of air compressor recycling machine |
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Application publication date: 20200911 |