A thermal oil wastewater treatment device

Abstract

The present invention relates to the technical field of heat transfer oil wastewater treatment, and discloses a heat transfer oil wastewater treatment device, including a heat transfer oil wastewater separation body, a purification body and a pretreatment equipment body, wherein the purification body is arranged at the bottom of the heat transfer oil wastewater separation body, the pretreatment equipment body is arranged at one side of the heat transfer oil wastewater separation body, a separation cylinder is fixedly installed inside the heat transfer oil wastewater separation body, and an oil separation chamber is arranged on one side inside the heat transfer oil wastewater separation body. The present invention transports the separated oil phase to the inside of the purification box through an oil pipeline, heats the oil phase through a heating rod, and since the boiling point of water is lower than that of heat transfer oil, the water turns into water vapor after heating and rises, and after impurities are removed by the activated carbon filtration inside the L-shaped filter layer, the water enters the inside of the heat exchanger through a water vapor delivery pipe for heat exchange, and the water vapor after cooling turns into water and is discharged through a drain pipe, so that the separated heat transfer oil is purified and can be directly recycled and reused.

Description

Technical Field

[0001] The invention relates to the technical field of heat transfer oil wastewater treatment, in particular to a heat transfer oil wastewater treatment device. Background Art

[0002] Thermal oil is the working medium used in the production and operation of various industrial and civil heating equipment and facilities. It has a wide range of applications and a large amount of use. After the thermal oil is used in the corresponding equipment and facilities, a large amount of wastewater will be generated. If it is discharged at will without treatment, it will inevitably cause serious pollution to the environment. Therefore, various methods must be used to treat it.

[0003] The existing treatment technology is to separate the water phase and the oil phase in the thermal oil wastewater by centrifugal separation and then recycle it. However, the oil phase after the separation of the thermal oil wastewater still contains a small amount of pollutants and cannot be directly recycled and reused. If the separated thermal oil is directly used for heat transfer operations, the small amount of pollutants contained therein will cause uneven heating of the thermal oil, and the pollutants mixed in the thermal oil will produce a large number of bubbles under the action of high temperature due to different densities, thereby reducing the heat transfer effect of the thermal oil. In addition, since the thermal oil wastewater contains a large amount of organic pollutants, the viscosity of the thermal oil wastewater is increased. During centrifugal separation treatment, the fluidity of the highly viscous thermal oil wastewater is reduced, thereby reducing the centrifugal separation effect of the thermal oil wastewater.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a heat transfer oil wastewater treatment device, which transports the separated oil phase to the interior of a purification box through an oil pipeline, and heats the oil phase through a heating rod. Since the boiling point of water is lower than that of heat transfer oil, the water turns into water vapor and rises after heating. After impurities are removed by activated carbon filtration inside the L-shaped filter layer, the water enters the interior of a heat exchanger through a water vapor transport pipe for heat exchange. The water vapor after cooling turns into water and is discharged through a drain pipe, so that the separated heat transfer oil is purified and can be directly recycled and reused, thereby solving the problem that the separated heat transfer oil still contains a small amount of sewage pollutants that affect the heat transfer effect of the heat transfer oil.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A heat transfer oil wastewater treatment device comprises a heat transfer oil wastewater separation body, a purification body and a pretreatment equipment body, wherein the purification body is arranged at the bottom of the heat transfer oil wastewater separation body, the pretreatment equipment body is arranged at one side of the heat transfer oil wastewater separation body, a separation cylinder is fixedly installed inside the heat transfer oil wastewater separation body, an oil separation cavity is arranged on one side inside the heat transfer oil wastewater separation body, an oil outlet hole is opened at the bottom of the oil separation cavity, and the oil outlet hole is connected with the purification body, a purification box is fixedly installed inside the purification body, an oil pipeline is fixedly installed between the oil outlet hole and the purification box, and a separation cylinder is fixedly installed inside the purification box at the bottom. There is an interlayer, a heating rod is evenly fixedly installed inside the interlayer, an L-shaped filter layer is fixedly installed on the top of one side of the inside of the purification box, a heat exchanger is fixedly installed on one side of the inside of the purification body, a water vapor delivery pipe is fixedly connected between the purification box and the heat exchanger, a drainage pipe that runs through the purification body is fixedly installed on one side of the heat exchanger, a first heat transfer pipe is fixedly connected on one side of the heat exchanger, a first air pump is arranged on one side of the purification body, a second heat transfer pipe is fixedly connected between the interlayer and the input end of the first air pump, a heat recovery pipe is fixedly installed on the output end of the first air pump, and the first heat transfer pipe is connected through the heat recovery pipe;

[0008] A water inlet pipe is fixedly installed through the top of the pretreatment equipment body, a filter is fixedly installed inside the pretreatment equipment body, a water pipe connected to the separation cylinder is fixedly installed through the bottom of the pretreatment equipment body, an electronic valve is fixedly installed inside the water pipe, a hot gas storage layer is opened on the inner side of the pretreatment equipment body, and an insulation layer is provided on the inner wall of the hot gas storage layer, a hot gas delivery pipe is fixedly installed through the top of the pretreatment equipment body through the hot gas storage layer, a second air pump is fixedly installed on one side of the top of the purification body, the input end of the second air pump is fixedly connected to the hot gas delivery pipe, the output end of the second air pump passes through the heat transfer oil wastewater separation body and is fixedly installed with a connecting pipe, and the connecting pipe is connected to the water delivery pipe.

[0009] Preferably, a motor is fixedly mounted on the top of the heat transfer oil wastewater separation body, a rotating rod located inside the separation cylinder is fixedly mounted on the output end of the motor, and a stirring paddle is fixedly mounted on the bottom of the rotating rod.

[0010] Preferably, an oil outlet is provided at the top of one side of the separation cylinder, and the oil outlet is located inside the oil-isolating chamber. A water-isolating chamber is provided on the other side of the thermal oil-wastewater separation body, and a partition is fixedly installed between the oil-isolating chamber and the water-isolating chamber. A water outlet is provided at the top of the other side of the separation cylinder, and the water outlet is located inside the water-isolating chamber, and the height of the water outlet is lower than that of the oil outlet.

[0011] Preferably, a first guide plate is fixedly installed at the bottom of the purification box body, and a second guide plate is fixedly installed at the top of the purification box body, and the second guide plate is located on the other side of the L-shaped filter layer.

[0012] Preferably, an oil drain pipe that passes through the purification body is fixedly installed on the other side of the purification box, and a valve is fixedly installed inside the oil drain pipe.

[0013] Preferably, a sealing door is rotatably mounted on the opening on one side of the main body of the pretreatment equipment, and a handle is fixedly mounted on the rear end of one side of the sealing door.

[0014] Preferably, the rear end of the thermal oil wastewater separation body is fixedly installed with a first ultrafilter and a second ultrafilter, and sealing covers are rotatably installed on the top of the first ultrafilter and the second ultrafilter through threads, and an outlet pipe is fixedly installed through the input end of the first ultrafilter and the water-proof cavity, and a threaded port is fixedly installed on the output end of the first ultrafilter, and a threaded sleeve is rotatably installed on the input end of the second ultrafilter, and the threaded port and the threaded sleeve are rotatably connected through threads, and the output end of the second ultrafilter is connected to a water pump.

[0015] Preferably, a fixing plate is fixedly installed inside the sealing cover, the sealing cover is through-connected with the input ends of the first ultrafilter and the second ultrafilter, drainage outlets are axially distributed inside the fixing plate, an inner tube through-connected with the output ends of the first ultrafilter and the second ultrafilter is fixedly installed on the inner side of the sealing cover, a water suction pipe is movably installed at the bottom of the inner tube, and a water distributor is fixedly installed at the bottom of the water suction pipe.

[0016] Preferably, a bottom cover is installed at the bottom of the first ultrafilter and the second ultrafilter by threaded rotation, and a sealing ring is sleeved and installed on the outer side of the bottom cover.

[0017] Compared with the prior art, the present invention provides a thermal oil wastewater treatment device, which has the following beneficial effects:

[0018] The present invention transports the separated oil phase to the inside of the purification box through an oil pipeline, and heats the oil phase through a heating rod. Since the boiling point of water is lower than that of heat transfer oil, the water turns into water vapor after heating and rises. After impurities are removed by activated carbon filtration inside the L-shaped filter layer, the water vapor enters the inside of the heat exchanger through a water vapor transport pipe for heat exchange. The water vapor after cooling turns into water and is discharged through a drain pipe, so that the separated heat transfer oil is purified and can be directly recycled and reused, thereby solving the problem that a small amount of sewage pollutants still exist in the separated heat transfer oil, which affects the heat transfer effect of the heat transfer oil.

[0019] The present invention transports the heat transfer oil wastewater to the interior of the pretreatment equipment body through the water inlet pipe, filters it through the filter screen, and makes the particulate matter, residue and impurities in the heat transfer oil wastewater accumulate on the top of the filter screen for collection, and transports the residual heat after the heat exchange of the heat exchanger to the interior of the heat return pipe through the first heat transfer pipe, and sucks a large amount of heat generated when the interior of the interlayer is heated into the interior of the heat return pipe through the first air pump through the second heat transfer pipe, so that the heat return pipe transports the hot air to the interior of the hot air storage layer to dry the pollutant residue on the top of the filter screen, so as to avoid the residue containing moisture in the later stage of the residue to affect the incineration efficiency, and at the same time fully utilizes the heat generated by the heating rod and the heat exchanger when working, and avoids the heat loss of the device;

[0020] After the heat transfer oil wastewater is transported to the interior of the separation cylinder through the water pipe, the electronic valve is automatically closed to make one end of the water pipe located inside the heat transfer oil wastewater separation body in a sealed state, and the hot gas transport pipe sucks a large amount of hot gas inside the hot gas storage layer into the interior of the connecting pipe through the second air pump, and then the connecting pipe transports heat to one end of the water pipe and introduces it into the interior of the separation cylinder from the bottom of the separation cylinder, so as to heat the heat transfer oil wastewater inside the separation cylinder, thereby avoiding the problem that the fluidity of the heat transfer oil wastewater is reduced due to the high viscosity, thereby reducing the centrifugal separation efficiency. At the same time, hot gas is filled upward from the bottom of the separation cylinder, so that the bottom of the separation cylinder generates an upward heat flow pressure, thereby increasing the air pressure at the bottom of the separation cylinder upward, so that the heat transfer oil wastewater at the bottom of the separation cylinder is fully separated and discharged upward, and the problem that the heat transfer oil wastewater inside the separation cylinder is separated due to gravity is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the side structure of the purification body of the present invention;

[0023] Figure 3 It is a schematic diagram of the side structure of the heat transfer oil wastewater separation body of the present invention;

[0024] Figure 4 It is a schematic diagram of the front cross-sectional structure of the heat transfer oil wastewater separation body of the present invention;

[0025] Figure 5 It is a schematic diagram of the front cross-sectional structure of the purification body of the present invention;

[0026] Figure 6 It is a schematic diagram of the front cross-sectional structure of the main body of the pretreatment equipment of the present invention;

[0027] Figure 7 is a schematic diagram of a rear cross-sectional structure of a first ultrafilter of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point A in the middle.

[0029] In the figure: 1. Heat transfer oil wastewater separation body; 101. Separation cylinder; 102. Motor; 103. Rotating rod; 104. Agitator; 105. Oil outlet; 106. Water outlet; 107. Oil separation chamber; 108. Water separation chamber; 109. Partition; 110. Oil outlet; 111. Oil pipeline; 2. Purification body; 201. Purification box; 202. Interlayer; 203. Heating rod; 204. L-type filter layer; 205. Heat exchanger; 206. Water vapor delivery pipe; 207. Drain pipe; 208. First heat delivery pipe; 209. Second heat delivery pipe; 210. First air pump; 211. Heat recovery pipe; 212. First guide plate; 213. Second guide plate; 214. Oil drain pipe; 215. Valve; 3. Pretreatment equipment body; 301. Water inlet pipe; 302. Filter; 303. Water delivery pipe; 304. Electronic valve; 305. Hot air storage layer; 306. Hot air delivery pipe; 307. Second air pump; 308. Connecting pipe; 309. Sealing door; 310. Handle; 4. First ultrafilter; 401. Water outlet pipe; 402. Threaded port; 5. Second ultrafilter; 501. Threaded sleeve; 6. Sealing cover; 601. Fixing plate; 602. Drain port; 603. Inner pipe; 7. Water suction pipe; 701. Water distributor; 8. Bottom cover; 801. Sealing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a thermal oil wastewater treatment device.

[0032] See also Figure 1-Figure 8A heat transfer oil wastewater treatment device comprises a heat transfer oil wastewater separation body 1, a purification body 2 and a pretreatment equipment body 3, the purification body 2 is arranged at the bottom of the heat transfer oil wastewater separation body 1, the pretreatment equipment body 3 is arranged on one side of the heat transfer oil wastewater separation body 1, a separation cylinder 101 is fixedly installed inside the heat transfer oil wastewater separation body 1, an oil separation chamber 107 is arranged on one side inside the heat transfer oil wastewater separation body 1, an oil outlet hole 110 is opened at the bottom of the oil separation chamber 107, and the oil outlet hole 110 is connected with the purification body 2, a purification box 201 is fixedly installed inside the purification body 2, an oil pipeline 111 is fixedly installed between the oil outlet hole 110 and the purification box 201, a partition 202 is arranged at the bottom of the purification box 201, and the partition 202 A heating rod 203 is evenly fixedly installed inside the purification box 201, an L-shaped filter layer 204 is fixedly installed on the top of one side of the inside of the purification box 201, a heat exchanger 205 is fixedly installed on one side of the inside of the purification body 2, a water vapor delivery pipe 206 is fixedly connected between the purification box 201 and the heat exchanger 205, a drainage pipe 207 that runs through the purification body 2 is fixedly installed on one side of the heat exchanger 205, a first heat transfer pipe 208 is fixedly connected to one side of the heat exchanger 205, a first air pump 210 is provided on one side of the purification body 2, a second heat transfer pipe 209 is fixedly connected between the interlayer 202 and the input end of the first air pump 210, a heat recovery pipe 211 is fixedly installed on the output end of the first air pump 210, and the first heat transfer pipe 208 is connected to the heat recovery pipe 211;

[0033] A water inlet pipe 301 is fixedly installed through the top of the pretreatment equipment body 3, a filter screen 302 is fixedly installed inside the pretreatment equipment body 3, a water pipe 303 connected to the separation cylinder 101 is fixedly installed through the bottom of the pretreatment equipment body 3, an electronic valve 304 is fixedly installed inside the water pipe 303, a hot gas storage layer 305 is opened on the inner side of the pretreatment equipment body 3, and an insulation layer is provided on the inner wall of the hot gas storage layer 305, a hot gas delivery pipe 306 is fixedly installed through the hot gas storage layer 305 on the top of the pretreatment equipment body 3, a second air pump 307 is fixedly installed on one side of the top of the purification body 2, the input end of the second air pump 307 is fixedly connected to the hot gas delivery pipe 306, and the output end of the second air pump 307 is fixedly installed through the heat transfer oil wastewater separation body 1 A connecting pipe 308 is fixedly installed, and the connecting pipe 308 is connected with the water pipe 303. A motor 102 is fixedly installed on the top of the thermal oil wastewater separation body 1. A rotating rod 103 located inside the separation cylinder 101 is fixedly installed on the output end of the motor 102. A stirring paddle 104 is fixedly installed on the bottom of the rotating rod 103. An oil outlet 105 is opened on the top of one side of the separation cylinder 101. The oil outlet 105 is located inside the oil-isolating cavity 107. A water-isolating cavity 108 is set on the other side of the thermal oil wastewater separation body 1. A partition plate 109 is fixedly installed between the oil-isolating cavity 107 and the water-isolating cavity 108. A water outlet 106 is opened on the top of the other side of the separation cylinder 101. The water outlet 106 is located inside the water-isolating cavity 108, and the height of the water outlet 106 is lower than the oil outlet 105.

[0034] Specifically, first, the heat transfer oil wastewater is transported to the interior of the pretreatment equipment body 3 through the water inlet pipe 301, and filtered through the filter 302, so that the particulate matter, residues and impurities in the heat transfer oil wastewater are accumulated on the top of the filter 302 for collection, and then the filtered heat transfer oil wastewater is transported to the interior of the separation cylinder 101 through the water pipe 303, and the electronic valve 304 is automatically closed to make one end of the water pipe 303 located inside the heat transfer oil wastewater separation body 1 in a sealed state, and the stirring paddle 104 is driven by the motor 102 to rotate, so that the heat transfer oil rotates inside the separation cylinder 101. Under the action of centrifugal force, due to the different densities of the heat transfer oil and water, the heat transfer oil is separated from the water, and the heat transfer oil is on the inside. The oil is discharged from the oil outlet 105 into the oil-isolating chamber 107, and the water on the outside is discharged into the water-isolating chamber 108 through the water outlet 106. When the heat transfer oil and wastewater are separated, the heating rod 203 heats the inside of the partition 202 to generate a large amount of heat. The heat inside the partition 202 is sucked into the inside of the heat return pipe 211 through the first air pump 210 through the second heat transfer pipe 209 and transported to the inside of the hot air storage layer 305 to dry the filtered residue. At the same time, the hot air delivery pipe 306 draws a large amount of hot air inside the hot air storage layer 305 into the inside of the connecting pipe 308 through the second air pump 307, and then the connecting pipe 308 delivers the heat to one end of the water delivery pipe 303 from The bottom of the separation cylinder 101 is introduced into the interior of the separation cylinder 101 to heat the heat transfer oil wastewater inside the separation cylinder 101, thereby avoiding the problem that the fluidity of the heat transfer oil wastewater is reduced due to the high viscosity of the heat transfer oil wastewater, thereby reducing the centrifugal separation efficiency. At the same time, hot air is filled upward from the bottom of the separation cylinder 101, so that the bottom of the separation cylinder 101 generates an upward heat flow pressure, thereby increasing the air pressure at the bottom of the separation cylinder 101 upward, so that the heat transfer oil wastewater at the bottom of the separation cylinder 101 is fully separated and discharged upward, avoiding the residual heat transfer oil wastewater in the separation cylinder 101. The heat transfer oil is transported to the interior of the purification box 201 through the oil outlet 110 and the oil pipeline 111, so that the heat transfer oil The heat rod 203 heats the heat transfer oil. Since the boiling point of water is lower than that of heat transfer oil, the water turns into water vapor after heating and rises. After impurities are removed by the activated carbon filtration inside the L-shaped filter layer 204, it enters the heat exchanger 205 through the water vapor delivery pipe 206 for heat exchange. The cooled water vapor turns into water and is discharged through the drain pipe 207, so that the separated heat transfer oil is purified and can be directly recycled and reused. The residual heat after heat exchange in the heat exchanger 205 is transported to the inside of the hot gas storage layer 305 through the first heat transfer pipe 208 and the heat return pipe 211 to dry the filtered residue. At the same time, the hot gas can be sucked into the inside of the separation cylinder 101 through the second air pump 307.

[0035] Furthermore, a first guide plate 212 is fixedly installed at the bottom of the purification box 201, and a second guide plate 213 is fixedly installed at the top of the purification box 201, and the second guide plate 213 is located on the other side of the L-shaped filter layer 204;

[0036] Specifically, when the heat transfer oil is heated inside the purification box 201 and the water reaches the boiling point, the water is converted into water vapor and rises, and is guided to the inside of the L-shaped filter layer 204 through the second guide plate 213 to prevent the water vapor from entering the inside of the oil pipeline 111, and the impurities in the water vapor are removed by filtering through the activated carbon, and the heat transfer oil after heating and purification is guided and discharged through the first guide plate 212 to avoid residue inside the purification box 201;

[0037] Furthermore, an oil drain pipe 214 penetrating through the purification body 2 is fixedly installed on the other side of the purification box 201, and a valve 215 is fixedly installed inside the oil drain pipe 214;

[0038] Specifically, by opening the valve 215, the purified heat transfer oil inside the purification box 201 can be discharged through the oil drain pipe 214, which is convenient for the staff to collect the purified heat transfer oil;

[0039] Furthermore, a sealing door 309 is rotatably mounted on the opening of one side of the main body 3 of the pretreatment device, and a handle 310 is fixedly mounted on the rear end of one side of the sealing door 309;

[0040] Specifically, by holding the handle 310 to open the sealed door 309, it is convenient for the staff to take out the dried filter residue inside the pretreatment equipment body 3 for incineration;

[0041] Furthermore, the rear end of the heat transfer oil wastewater separation body 1 is fixedly installed with a first ultrafilter 4 and a second ultrafilter 5, and the tops of the first ultrafilter 4 and the second ultrafilter 5 are rotatably installed with a sealing cover 6 through a thread, and the input end of the first ultrafilter 4 and the water-proof cavity 108 are connected and fixedly installed with a water outlet pipe 401, and the output end of the first ultrafilter 4 is fixedly installed with a threaded port 402, and the input end of the second ultrafilter 5 is rotatably installed with a threaded sleeve 501, and the threaded port 402 is rotatably connected to the threaded sleeve 501 through a thread, and the output end of the second ultrafilter 5 is connected to a water pump;

[0042] Further, a fixing plate 601 is fixedly installed inside the sealing cover 6, the sealing cover 6 is connected with the input ends of the first ultrafilter 4 and the second ultrafilter 5, a drain port 602 is provided inside the fixing plate 601 in an axial distribution, an inner tube 603 connected with the output ends of the first ultrafilter 4 and the second ultrafilter 5 is fixedly installed inside the sealing cover 6, a water suction pipe 7 is movably installed at the bottom of the inner tube 603, and a water distributor 701 is fixedly installed at the bottom of the water suction pipe 7;

[0043] Furthermore, a bottom cover 8 is installed at the bottom of the first ultrafilter 4 and the second ultrafilter 5 by screw thread rotation, and a sealing ring 801 is sleeved and installed on the outer side of the bottom cover 8;

[0044] Specifically, the output end of the first ultrafilter 4 and the input end of the second ultrafilter 5 are fixedly connected to the threaded sleeve 501 through the threaded port 402. The separated water in the water-proof chamber 108 is input to the input end of the first ultrafilter 4 through the outlet pipe 401, and the separated water is discharged into the interior of the first ultrafilter 4 through the drain port 602. Since the coagulant and sand are added to the interior of the first ultrafilter 4, the organic pollutants in the sewage are chemically reacted and solidified, and the solidified impurities are blocked and adsorbed by the sand. Then, the filtered water is pumped by the water pump, and the filtered water is passed through the water distribution system. The water sucked into the water suction pipe 7 by the water distributor 701 is transported to the input end of the second ultrafilter 5 through the inner tube 603, and then discharged into the second ultrafilter 5. Since the second ultrafilter 5 is filled with activated carbon, the filtered water is subjected to activated carbon adsorption filtration to remove impurities in the water. When the water pump is used to pump water, the filtered water is transported to the inside of the water suction pipe 7 through the water distributor 701 and discharged through the output end of the second ultrafilter 5. The bottom of the first ultrafilter 4 and the second ultrafilter 5 can be conveniently opened through the bottom cover 8, so as to facilitate the cleaning of the inside of the first ultrafilter 4 and the second ultrafilter 5.

[0045] Working principle: First, the heat transfer oil wastewater is transported to the interior of the pretreatment equipment body 3 through the water inlet pipe 301, filtered through the filter 302, and then transported to the interior of the separation cylinder 101 through the water pipe 303. Then, the electronic valve 304 is automatically closed to make the other end of the water pipe 303 in a sealed state. Then, the heating rod 203 heats the interior of the interlayer 202 to generate a large amount of heat, and the interior of the purification box 201 is preheated. The hot air inside the interlayer 202 is slowly sucked into the interior of the hot air storage layer 305 through the second heat pipe 209 and the heat return pipe 211 through the first air pump 210, and the particles accumulated on the top of the filter 302 are The particle residue is dried, and at the same time, the hot air inside the hot air storage layer 305 is sucked into the interior of the connecting pipe 308 through the second air pump 307 and the hot air delivery pipe 306, and then discharged into the interior of the other end of the water delivery pipe 303, and discharged into the interior from the bottom of the separation cylinder 101, and the heat transfer oil wastewater inside the separation cylinder 101 is heated to reduce the viscosity of the heat transfer oil wastewater and thus improve the separation efficiency. At this time, the output end of the motor 102 drives the stirring paddle 104 to rotate, so that the heat transfer oil and wastewater inside the separation cylinder 101 are separated. Due to the different densities of the heat transfer oil and water, the water on the outside is discharged into the water isolation chamber 108 through the water outlet 106. The heat transfer oil on the inside is discharged into the oil separation chamber 107 through the oil outlet 105. Since the hot gas is pressurized upward through the bottom of the separation cylinder 101 and discharged into the separation cylinder 101, the heat transfer oil inside the separation cylinder 101 is separated upward under the action of the increased hot flow pressure, thereby avoiding residual heat transfer oil waste water inside the separation cylinder 101. The separated heat transfer oil is discharged into the interior of the purification box 201 through the oil outlet 110 and the oil pipe 111. The heat transfer oil is heated by the heating rod 203. When the small amount of waste water contained in the heat transfer oil reaches the boiling point, the waste water is converted into water vapor. The water vapor rises inside the purification box 201 and passes through the first The second guide plate 213 guides the water to be discharged into the interior of the L-shaped filter layer 204 for filtration, and then the filtered water vapor is discharged into the interior of the heat exchanger 205 through the water vapor delivery pipe 206 for heat exchange to reduce the temperature, so that the water vapor condenses into water and is discharged through the drain pipe 207 for collection. The residual heat after the heat exchange of the heat exchanger 205 is discharged into the interior of the heat return pipe 211 through the first heat delivery pipe 208 and transported to the interior of the hot gas storage layer 305, and the pollutant residue accumulated on the top of the filter screen 302 is dried. Then the valve 215 is opened, and the purified heat transfer oil in the purification box 201 is discharged through the oil discharge pipe 214 for recycling and reuse;

[0046] The wastewater inside the water-proof chamber 108 is transported to the interior of the first ultrafilter 4 through the outlet pipe 401. Since coagulant and sand are added to the interior of the first ultrafilter 4, the organic pollution in the wastewater is solidified after chemical reaction with the coagulant, and the precipitate produced after the reaction is blocked and adsorbed by the sand. Subsequently, water is pumped out by a water pump, and the filtered water is transported to the interior of the second ultrafilter 5 through the suction pipe 7 and the water distributor 701. Since activated carbon is added to the interior of the second ultrafilter 5, the filtered water is filtered again, and the ultrafiltered water is discharged and recycled by a water pump.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat transfer oil wastewater treatment device, comprising a heat transfer oil wastewater separation body (1), a purification body (2) and a pretreatment equipment body (3), wherein the purification body (2) is arranged at the bottom of the heat transfer oil wastewater separation body (1), the pretreatment equipment body (3) is arranged at one side of the heat transfer oil wastewater separation body (1), a separation cylinder (101) is fixedly installed inside the heat transfer oil wastewater separation body (1), an oil separation chamber (107) is arranged on one side inside the heat transfer oil wastewater separation body (1), an oil outlet hole (110) is opened at the bottom of the oil separation chamber (107), and the oil outlet hole (110) is connected to the purification body (2). Features: A purification box (201) is fixedly installed inside the purification body (2); an oil delivery pipe (111) is fixedly installed between the oil outlet (110) and the purification box (201); a partition (202) is provided at the bottom of the purification box (201); a heating rod (203) is evenly fixedly installed inside the partition (202); an L-shaped filter layer (204) is fixedly installed on the top of one side of the purification box (201); a heat exchanger (205) is fixedly installed on one side of the purification body (2); and a heat exchanger (205) is fixedly installed between the purification box (201) and the heat exchanger (205). A water vapor transport pipe (206) is fixedly connected thereto; a drainage pipe (207) penetrating the purification body (2) is fixedly installed on one side of the heat exchanger (205); a first heat transfer pipe (208) is fixedly connected thereto on one side of the heat exchanger (205); a first air pump (210) is provided on one side of the purification body (2); a second heat transfer pipe (209) is fixedly connected through the partition (202) and the input end of the first air pump (210); a heat recovery pipe (211) is fixedly installed at the output end of the first air pump (210); and the first heat transfer pipe (208) is connected through the heat recovery pipe (211); A water inlet pipe (301) is fixedly installed through the top of the pretreatment equipment body (3), a filter screen (302) is fixedly installed inside the pretreatment equipment body (3), a water delivery pipe (303) connected to the separation cylinder (101) is fixedly installed through the bottom of the pretreatment equipment body (3), an electronic valve (304) is fixedly installed inside the water delivery pipe (303), a hot gas storage layer (305) is provided on the inner side of the pretreatment equipment body (3), and the inner wall of the hot gas storage layer (305) is A heat-insulating layer is provided, a hot gas conveying pipe (306) is fixedly installed on the top of the pretreatment equipment body (3) through the hot gas storage layer (305), a second air pump (307) is fixedly installed on one side of the top of the purification body (2), an input end of the second air pump (307) is fixedly connected to the hot gas conveying pipe (306), an output end of the second air pump (307) is fixedly connected to the hot gas conveying pipe (306), and a connecting pipe (308) is fixedly installed on the output end of the second air pump (307) through the heat transfer oil wastewater separation body (1), and the connecting pipe (308) is connected to the water conveying pipe (303); A motor (102) is fixedly mounted on the top of the heat transfer oil wastewater separation body (1); a rotating rod (103) located inside the separation cylinder (101) is fixedly mounted on the output end of the motor (102); and a stirring paddle (104) is fixedly mounted on the bottom of the rotating rod (103); An oil outlet (105) is provided at the top of one side of the separation cylinder (101), and the oil outlet (105) is located inside the oil-isolating chamber (107). A water-isolating chamber (108) is provided on the other side of the thermal oil wastewater separation body (1), and a partition (109) is fixedly installed between the oil-isolating chamber (107) and the water-isolating chamber (108). A water outlet (106) is provided at the top of the other side of the separation cylinder (101), and the water outlet (106) is located inside the water-isolating chamber (108), and the height of the water outlet (106) is lower than the oil outlet (105).

2. A thermal oil wastewater treatment device according to claim 1, Features: A first flow guide plate (212) is fixedly installed at the bottom of the purification box (201), and a second flow guide plate (213) is fixedly installed at the top of the purification box (201), wherein the second flow guide plate (213) is located on the other side of the L-shaped filter layer (204).

3. A thermal oil wastewater treatment device according to claim 1, Features: An oil drain pipe (214) that passes through the purification body (2) is fixedly installed on the other side of the purification box (201), and a valve (215) is fixedly installed inside the oil drain pipe (214).

4. A thermal oil wastewater treatment device according to claim 1, Features: A sealing door (309) is rotatably mounted on an opening on one side of the pretreatment equipment body (3), and a handle (310) is fixedly mounted on the rear end of one side of the sealing door (309).

5. A thermal oil wastewater treatment device according to claim 1, Features: A first ultrafilter (4) and a second ultrafilter (5) are fixedly mounted at the rear end of the heat transfer oil wastewater separation body (1); sealing covers (6) are rotatably mounted on the tops of the first ultrafilter (4) and the second ultrafilter (5) through threads; a water outlet pipe (401) is fixedly mounted between the input end of the first ultrafilter (4) and the water-isolating cavity (108); a threaded opening (402) is fixedly mounted on the output end of the first ultrafilter (4); a threaded sleeve (501) is rotatably mounted on the input end of the second ultrafilter (5); the threaded opening (402) and the threaded sleeve (501) are rotatably connected through threads; and the output end of the second ultrafilter (5) is connected to a water pump.

6. A thermal oil wastewater treatment device according to claim 5, Features: A fixing plate (601) is fixedly mounted inside the sealing cover (6); the sealing cover (6) is in continuous connection with the input ends of the first ultrafilter (4) and the second ultrafilter (5); a drainage port (602) is provided in an axially distributed manner inside the fixing plate (601); an inner tube (603) in continuous connection with the output ends of the first ultrafilter (4) and the second ultrafilter (5) is fixedly mounted inside the sealing cover (6); a water suction pipe (7) is movably mounted at the bottom of the inner tube (603); and a water distributor (701) is fixedly mounted at the bottom of the water suction pipe (7).

7. A thermal oil wastewater treatment device according to claim 6, Features: A bottom cover (8) is installed at the bottom of the first ultrafilter (4) and the second ultrafilter (5) by means of a threaded rotation, and a sealing ring (801) is sleeved and installed on the outer side of the bottom cover (8).

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