Heat medium oil heat exchanger based on multi-stage temperature control mechanism

Abstract

The present invention discloses a heat medium oil heat exchanger based on a multi-stage temperature control mechanism, and relates to the technical field of heat exchange. The heat medium oil heat exchanger based on the multi-stage temperature control mechanism comprises a shell and a cleaning mechanism, wherein the cleaning mechanism is arranged inside the shell, and the cleaning mechanism comprises a worm, a cleaning strip, a crown gear, a cleaning brush, a filter plate and a stripping brush. When the crown gear is driven to rotate, it simultaneously drives the cleaning strip to rotate, and the rotating cleaning strip removes the attachments on the inner wall of the tube. At the same time, the crown gear drives the cleaning brush to perform secondary cleaning on the inner wall of the tube to avoid the occurrence of cleaning dead corners and ensure the cleaning effect, thereby achieving the cleaning of coking and carbon deposition-like crystals that are easy to be generated on the heat medium oil inside the equipment, and avoiding the crystals from adhering to the inner wall of the heat exchange tube to cause the heat exchanger to be blocked, resulting in the heat exchanger being unable to work normally, affecting the work efficiency, and increasing the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and more specifically to a heat medium oil heat exchanger based on a multi-stage temperature control mechanism. Background Art

[0002] A heat exchanger is a device that realizes heat transfer between fluids at different temperatures. It mainly consists of components such as a shell, a tube bundle, and a tube sheet. By allowing hot and cold fluids to flow through both sides of the heat transfer surface respectively, heat is transferred from the high-temperature fluid to the low-temperature fluid through heat conduction, convective heat transfer, etc.

[0003] In order to make the heat exchanger more suitable for some industrial applications, the heat transfer medium in some heat exchangers is replaced with hot kerosene. The hot kerosene heat exchanger mainly has the characteristics of high-temperature stability, high heat transfer efficiency, and good low-temperature fluidity. Precise temperature control, waste heat recovery, and adaptation to complex processes can be achieved through the heat exchanger.

[0004] However, the existing heat medium oil heat exchanger based on a multi-stage temperature control mechanism has the following deficiencies: due to the material of hot kerosene itself, when the number of hot and cold exchanges increases, coking and carbon deposition-like crystals are likely to be generated. When the crystals adhere to the inner wall of the heat exchange tube, it is easy for the heat exchanger to become blocked, resulting in the heat exchanger being unable to work properly, affecting work efficiency, and increasing maintenance costs.

[0005] Therefore, we propose a heat medium oil heat exchanger based on a multi-stage temperature control mechanism to solve the problems raised above. Summary of the Invention

[0006] The object of the present invention is to provide a heat medium oil heat exchanger based on a multi-stage temperature control mechanism, start the motor to drive the bevel gear rod to rotate, and when the bevel gear rod rotates, it drives the crown gear meshing therewith, and the rotating crown gear drives the cleaning bar and the worm to rotate synchronously, so as to scrape off the attachments produced by the hot kerosene adhering to the inner wall of the heat exchange tube, and at the same time cooperate with the rotating worm, and drive the worm wheel to rotate through the rotation of the worm, and the worm wheel rotates in situ on the inner side of the fixed frame through the rotating rod, and at the same time drives the cleaning brushes on both sides of the rotating rod to rotate, and the continuously rotating cleaning bar enables each cleaning brush to evenly clean each part of the cleaning bar, and at this time, the cleaned attachments flow into the cleaning chamber with the cleaning liquid, and the filter plate fixed to the gear ring is in the cleaning chamber filled with the cleaning liquid. As the gear ring rotates, the attachments brought out by the cleaning liquid are captured and rotated. When the filter plate carrying the attachments contacts the stripping brush and generates friction, the stripping brush brushes off the attachments on the filter plate. At this time, the position of the stripping brush blocks the attachments, so that the attachments sink to the bottom of the cleaning bin and fall into the connecting leakage pipe connected to the bottom of the cleaning bin, and then fall into the collecting bin through the connecting leakage pipe and the inside of the solenoid valve. At this time, the cleaning liquid filtered by the filter plate can be directly re-connected through the sealing plate and another group of structures to continue cleaning. When the attachments inside the collecting bin gradually increase, the cleaning liquid inside the collecting bin also gradually decreases. At this time, the solenoid valve is closed, the collecting bin is removed and the attachments collected therein are poured out.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat medium oil heat exchanger based on a multi-stage temperature control mechanism comprises a shell and a cleaning mechanism, wherein the cleaning mechanism is arranged inside the shell, and the cleaning mechanism comprises a worm, a cleaning strip, a crown gear, a cleaning brush, a filter plate and a stripping brush. When the crown gear is driven to rotate, it simultaneously drives the cleaning strip to rotate, and the rotating cleaning strip removes the attachments on the inner wall of the tube. At the same time, the crown gear drives the cleaning brush to perform secondary cleaning on the inner wall of the tube, and simultaneously removes the attachments accidentally adhered to the cleaning strip. The attachments that fall off flow with the hot kerosene, and are finally captured and collected in the filter plate. The rotating filter plate drives the captured attachments to rotate together until they contact the stripping brush. Finally, the attachments on the filter plate are scraped off by the stripping brush and gathered together according to gravity.

[0008] Preferably, the cleaning mechanism also includes a cleaning chamber, which is arranged on the inner side of the shell, and the outer side of the cleaning chamber is connected to a heat exchange tube, the inner side of the heat exchange tube is rotatably connected to the cleaning strip, a rotating cylinder is installed at one end of the cleaning strip, and a fixed disk is rotatably connected to the outer side of the rotating cylinder, a groove is opened on the inner side of the rotating cylinder, a fixing rod is installed on the inner side of the fixed disk, the fixing rod is fixedly connected to the cleaning chamber, the fixing rod is located on the outer side of the rotating cylinder, and a limiting cylinder is installed on the inner side of the fixed disk.

[0009] Preferably, a plurality of connecting rods are arranged on the outer side of the limiting cylinder, the connecting rods are fixedly connected with the fixed disk, a worm is rotatably connected to the inner side of the limiting cylinder, a fixing frame is rotatably connected to the outer side of the worm, and one end of the fixing frame is fixedly connected with the connecting rod.

[0010] Preferably, a rotating rod is rotatably connected to the inner side of the fixing frame, cleaning brushes are arranged on the inner sides of both ends of the rotating rod, a worm gear is arranged on the inner sides of the two cleaning brushes, and the worm gear is fixedly connected to the outer side of the rotating rod.

[0011] Preferably, the worm gear is in threaded connection with the worm, a crown gear is arranged at the other end of the worm, and the crown gear is fixedly connected with the other end of the cleaning strip.

[0012] Preferably, a connecting frame is rotatably connected to the inner side of the cleaning bin, a toothed ring is fixedly connected to the outer side of the connecting frame, a rotating groove is formed in the inner side of the cleaning bin, and the toothed ring is rotatably connected with the cleaning bin through the rotating groove.

[0013] Preferably, the toothed ring is meshed with the crown gear, a bevel gear rod is rotatably connected to the inner side of the top of the cleaning bin, one end of the bevel gear rod is a bevel gear, the other end is a cylindrical rotating rod, and the other end penetrates through the cleaning bin and the housing and is fixedly connected with a motor, and the bottom of the motor is fixed to the outer side of the top of the housing.

[0014] Preferably, a peeling brush is arranged at the inner bottom of the cleaning bin, the bevel gear rod is meshed with the crown gear through the bevel gear, a filter plate is arranged on the outer side of the connecting frame, the peeling brush is a combination of multiple groups of hard brush bristles with different lengths, and the whole is inclined at 45 degrees, and the filter plate is made of high-elastic rubber material.

[0015] Preferably, a connecting drain pipe is communicated with the bottom of the cleaning bin, the outer side of the connecting drain pipe penetrates through the housing and is fixedly connected with a sealing mounting plate, the sealing mounting plate is fixedly connected to the outer side of the housing, an electromagnetic valve is arranged at the bottom of the connecting drain pipe, and the electromagnetic valve is communicated with the connecting drain pipe.

[0016] Preferably, a collecting bin is arranged on the outer side of the bottom of the electromagnetic valve, the collecting bin is in threaded connection with the electromagnetic valve, and a sealing plate is arranged on the outer side of the cleaning bin.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. When the present invention performs cleaning work, the residual hot kerosene in the heat exchange tube is emptied, and a cleaning liquid is injected. Then, the motor is started. The motor drives the bevel gear rod to start rotating. Through the principle of gear meshing, the bevel gear rod drives the connected crown gear to rotate synchronously. The rotation of the crown gear causes the cleaning strip and the worm to rotate simultaneously. The cleaning strip closely adheres to the inner wall of the heat exchange tube and scrapes off the coke and gum-like attachments generated by the long-term use of hot kerosene during the rotation process. At the same time, the rotation of the worm drives the movement of the worm gear. The worm gear is fixed inside the fixed frame through a rotating rod. As the worm gear rotates, the cleaning brushes installed on both sides of the rotating rod start to work. Multiple rotating rods with cleaning brushes are evenly distributed between the heat exchange tube and the cleaning strip and cooperate with each other to perform multi-faceted cleaning on the inner wall of the heat exchange tube and the surface of the cleaning strip. To ensure the stability and effectiveness of the cleaning work, the other end of the fixed frame is firmly connected to the fixed disk through a connecting rod. Among them, a single crown gear is meshed with a toothed ring. Through the rotation of the toothed ring, multiple crown gears can be driven simultaneously to achieve synchronous cleaning of multiple groups of heat exchange tubes, greatly improving the cleaning efficiency. The other end of the cleaning strip is embedded in the slot of the rotating cylinder to ensure that the cleaning strip closely adheres to the inner wall of the heat exchange tube during rotation, avoiding cleaning dead corners and ensuring the cleaning effect. Thus, the scale and carbonaceous crystalline substances that are likely to be generated in the internal heat medium oil of the equipment are removed, preventing the heat exchanger from being blocked due to the attachment of crystalline substances on the inner wall of the heat exchange tube, resulting in the abnormal operation of the heat exchanger, affecting the working efficiency, and increasing the maintenance cost.

[0019] 2. During the cleaning process of the equipment of the present invention, the scraped-off attachments flow into the cleaning bin together with the cleaning liquid. The filter plate fixedly connected to the toothed ring will rotate synchronously in the cleaning bin as the toothed ring rotates. Using its porous structure, the attachments in the cleaning liquid are intercepted and carried. When the filter plate rotates past the peeling brush, the frictional force generated by their contact will brush off the attachments from the filter plate. The impurities that lose their attachment will naturally settle to the bottom of the cleaning bin under the action of gravity, and then fall into the collection bin through the connecting drain pipe and the solenoid valve. The cleaning liquid filtered by the filter plate returns to the cleaning cycle through the communication channel between the sealing plate and another set of structures to continue the cleaning work. While the cleaning continues, the attachments in the collection bin gradually increase. When it reaches a certain amount, the solenoid valve is closed, the collection bin is removed, and the sundries are dumped and cleaned. After the cleaning is completed, the collection bin is reinstalled, and then the solenoid valve is opened, and the cleaning system can continue to operate normally. This cleaning method is applicable to both the situation where the heat exchanger has not been cleaned for a long time and there are many attachments, and short-cycle cleaning. During short-cycle cleaning, there is no need to replace the hot kerosene in the heat exchange tube, and the cleaning process can be directly started. In addition, during the normal heat exchange operation of the heat exchanger, the solenoid valve is in the closed state, cutting off the connection with the collection bin to ensure the closed operation of the entire system, prevent leakage, and ensure the stable operation of the equipment. Description of the Drawings

[0020] Figure 1Isometric view of the front view structure in the heat transfer oil heat exchanger based on the multi-stage temperature control mechanism of the present invention;

[0021] Figure 2 Exploded isometric view of the structure in the heat transfer oil heat exchanger based on the multi-stage temperature control mechanism of the present invention;

[0022] Figure 3 Exploded isometric view of the cleaning mechanism in the heat transfer oil heat exchanger based on the multi-stage temperature control mechanism of the present invention;

[0023] Figure 4 Partial exploded isometric view of the cleaning mechanism in the heat transfer oil heat exchanger based on the multi-stage temperature control mechanism of the present invention;

[0024] Figure 5 Is Figure 4 Enlarged view of part A in;

[0025] Figure 6 Front view of the heat transfer oil heat exchanger based on the multi-stage temperature control mechanism of the present invention.

[0026] In the figure: 1. Outer shell; 2. Cleaning mechanism; 201. Cleaning bin; 202. Sealing plate; 203. Heat exchange tube; 204. Cleaning strip; 205. Fixed plate; 206. Strip groove; 207. Fixed rod; 208. Limiting cylinder; 209. Connecting rod; 210. Worm; 211. Fixed frame; 212. Rotating rod; 213. Worm gear; 214. Cleaning brush; 215. Crown gear; 216. Tooth ring; 217. Filter plate; 218. Stripping brush; 219. Connecting leakage pipe; 220. Sealing mounting plate; 221. Solenoid valve; 222. Collection bin; 223. Bevel gear rod; 224. Connecting frame; 225. Motor; 226. Rotating cylinder. Detailed implementation method

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1, according to Figures 1-3As shown, in order to achieve the above purpose, the present invention provides the following technical solutions: a heat medium oil heat exchanger based on a multi-stage temperature control mechanism includes a shell 1 and a cleaning mechanism 2, the cleaning mechanism 2 is arranged inside the shell 1, and the cleaning mechanism 2 includes a worm 210, a cleaning bar 204, a crown gear 215, a cleaning brush 214, a filter plate 217 and a stripping brush 218. When the crown gear 215 is driven to rotate, it synchronously drives the cleaning bar 204 to rotate, and the rotating cleaning bar 204 removes the attachments on the inner wall of the tube. At the same time, the crown gear 215 drives the cleaning brush 214 to perform secondary cleaning on the inner wall of the tube, and simultaneously removes the attachments accidentally adhered to the cleaning bar 204, and then the fallen attachments flow with the hot kerosene and are finally removed by the filter plate 218. 17 is captured and collected in the filter plate 217, and the rotating filter plate 217 drives the captured attachments to rotate together until they contact the stripping brush 218. Finally, the attachments on the filter plate 217 are scraped off by the stripping brush 218 and gathered together according to gravity. The cleaning mechanism 2 also includes a cleaning chamber 201, and the cleaning chamber 201 is arranged on the inner side of the shell 1. The outer side of the cleaning chamber 201 is connected with a heat exchange pipe 203, and the inner side of the heat exchange pipe 203 is rotatably connected with the cleaning bar 204. A rotating cylinder 226 is arranged at one end of the cleaning bar 204, and a fixed disk 205 is rotatably connected to the outer side of the rotating cylinder 226. A strip groove 206 is arranged on the inner side of the rotating cylinder 226, and a fixed rod 207 is arranged on the inner side of the fixed disk 205. The fixed rod 207 is connected to the cleaning bar 204. The bin 201 is fixedly connected, the fixed rod 207 is located on the outside of the rotating cylinder 226, a limiting cylinder 208 is arranged on the inside of the fixed disk 205, and a plurality of connecting rods 209 are arranged on the outside of the limiting cylinder 208, and the connecting rod 209 is fixedly connected to the fixed disk 205, and the inner side of the limiting cylinder 208 is rotatably connected to a worm 210, and the outer side of the worm 210 is rotatably connected to a fixed frame 211, one end of the fixed frame 211 is fixedly connected to the connecting rod 209, and the inner side of the fixed frame 211 is rotatably connected to a rotating rod 212, and cleaning brushes 214 are arranged on the inner sides of both ends of the rotating rod 212, and worm wheels 213 are arranged on the inner sides of the two cleaning brushes 214, and the worm wheels 213 are fixedly connected to the outer side of the rotating rod 212, and the worm wheels 213 are connected to the worm 212. 10 threaded connection, the other end of the worm 210 is provided with a crown gear 215, the crown gear 215 is fixedly connected to the other end of the cleaning strip 204, the inner side of the cleaning chamber 201 is rotatably connected with a connecting frame 224, the outer side of the connecting frame 224 is fixedly connected with a ring gear 216, the inner side of the cleaning chamber 201 is provided with a rotating groove, the ring gear 216 is rotatably connected to the cleaning chamber 201 through the rotating groove, the ring gear 216 is meshed with the crown gear 215, the top inner side of the cleaning chamber 201 is rotatably connected with a bevel gear rod 223, one end of the bevel gear rod 223 is a bevel gear, the other end is a cylindrical rotating rod, and the other end passes through the cleaning chamber 201 and the outer shell 1 and is fixedly connected with a motor 225, and the bottom of the motor 225 is fixed to the outer side of the top of the outer shell 1.

[0029] The effect achieved by the entire embodiment 1 is as follows: after the heat exchanger completes a working cycle, in order to ensure stable operation in the next cycle, the hot kerosene in the heat exchange tube 203 is first replaced with a cleaning liquid, and the motor 225 is started to drive the bevel gear rod 223 to rotate. The bevel gear rod 223 drives the cleaning bar 204 to rotate synchronously with the worm 210 through the meshing crown gear 215. Since the cleaning bar 204 is in close contact with the inner wall of the heat exchange tube 203, it can scrape off the attachments on the inner wall caused by the hot kerosene when it rotates. At the same time, the worm 210 drives the worm wheel 213 to rotate, and the worm wheel 213 rotates on the inner side of the fixed frame 211 through the installed rotating rod 212, thereby driving the cleaning brushes 214 on both sides of the rotating rod 212 to rotate. The rotating rod 212 with the cleaning brush 214 operates synchronously on the inner side of the heat exchange tube 203 and the cleaning strip 204 to achieve comprehensive cleaning of the inner walls of both. The cleaning strip 204 rotates continuously to allow the cleaning brush 214 to evenly clean its various parts. The other end of the fixing frame 211 is fixed to the fixing plate 205 through the connecting rod 209 to ensure structural stability. A single crown gear 215 is meshed with the ring gear 216 to drive multiple crown gears 215 to rotate synchronously to achieve synchronous cleaning of multiple groups of heat exchange tubes 203. The other end of the cleaning strip 204 is inserted into the strip groove 206 of the rotating cylinder 226. The relative rotation of the rotating cylinder 226 and the fixing frame 211 ensures that the cleaning strip 204 is always in close contact with the inner wall of the heat exchange tube 203 to ensure the cleaning effect.

[0030] Embodiment 2, according to Figures 3-6 As shown, a stripping brush 218 is installed at the inner bottom of the cleaning chamber 201, and the bevel gear rod 223 is meshed with the crown gear 215 through the bevel gear. A filter plate 217 is installed on the outer side of the connecting frame 224. The stripping brush 218 is a combination of multiple groups of hard bristles of different lengths, and its overall inclination is forty-five degrees. The filter plate 217 is made of highly elastic rubber material. The bottom of the cleaning chamber 201 is connected with a connecting leakage pipe 219, and the outer side of the connecting leakage pipe 219 passes through the outer shell 1 and is fixedly connected with a sealing mounting plate 220. The sealing mounting plate 220 is fixedly connected to the outer side of the outer shell 1. A solenoid valve 221 is provided at the bottom of the connecting leakage pipe 219, and the solenoid valve 221 is connected to the connecting leakage pipe 219. A collecting chamber 222 is provided on the outer side of the bottom of the solenoid valve 221, and the collecting chamber 222 is threadedly connected to the solenoid valve 221. A sealing plate 202 is installed on the outer side of the cleaning chamber 201.

[0031] The effect achieved by the entire Embodiment 2 is as follows: During the cleaning process, the attached substances scraped off flow into the cleaning bin 201 along with the cleaning liquid. The filter plate 217 fixed to the gear ring 216 rotates in the cleaning bin 201 along with the gear ring 216, capturing and carrying the attached substances. When the filter plate 217 passes by the peeling brush 218, the attached substances are brushed off due to friction and sink to the bottom of the cleaning bin 201 under the action of gravity, and then fall into the collection bin 222 through the connecting drain pipe 219 and the solenoid valve 221. The filtered cleaning liquid is communicated with another set of structures through the sealing plate 202 and can be recycled for cleaning. When the attached substances in the collection bin 222 increase, the solenoid valve 221 is closed, the collection bin 222 is removed, the sundries are poured out, and then it is reinstalled to continue working. This method is applicable to the situation where the heat exchanger has not been cleaned for a long time. When cleaning in a short cycle, it is not necessary to replace the hot kerosene in the heat exchange tube 203, and direct operation is still effective. During normal heat exchange operation, the solenoid valve 221 cuts off the connection with the collection bin 222 to ensure the closed operation of the system.

[0032] The working principle of the whole equipment is as follows: after the heat exchanger has finished working for a period of time, in order to make the heat exchanger stably work for the next cycle, the cleaning liquid is replaced inside the heat exchange tube 203 of the heat exchanger, and the motor 225 is started to drive the bevel gear rod 223 to rotate. When the bevel gear rod 223 rotates, it drives the crown gear 215 meshing therewith. The rotating crown gear 215 drives the cleaning strip 204 to rotate synchronously with the worm 210. Because the cleaning strip 204 is in close contact with the inner wall of the heat exchange tube 203, the cleaning strip 204 scrapes off the attachments produced by the hot kerosene adhering to the inner wall of the heat exchange tube 203 when it rotates, and at the same time cooperates with the rotating worm 210 to drive the worm wheel 213 to rotate through the rotation of the worm 210. The worm wheel 213 is installed on the rotating The worm gear 213 is on the moving rod 212, so the worm gear 213 rotates in situ on the inner side of the fixed frame 211 through the rotating rod 212, and at the same time drives the cleaning brushes 214 on both sides of the rotating rod 212 to rotate, so that multiple groups of rotating rods 212 with cleaning brushes 214 rotate on the inner side of the heat exchange tube 203 and the cleaning strip 204 to achieve cleaning of the inner side of the heat exchange tube 203 and the cleaning strip 204. The continuously rotating cleaning strip 204 allows each cleaning brush 214 to evenly clean each part of the cleaning strip 204. The fixing between the connecting rod 209 fixed at the other end of the fixed frame 211 and the fixed plate 205 makes the fixed frame 211 stable, and through the meshing between a crown gear 215 and a gear ring 216, the multiple crown gears 215 are driven to rotate synchronously, so that the multiple heat exchange tubes 203 and the cleaning strip 204 are cleaned. At the same time, the cleaning work is carried out. The other end of the cleaning strip 204 is inserted into the strip groove 206 of the rotating cylinder 226. The rotating cylinder 226 and the fixing frame 211 rotate so that the cleaning strip 204 can keep close contact with the inner wall of the heat exchange tube 203 during the rotation, thereby ensuring the cleaning effect. At this time, the cleaned attachments flow into the cleaning chamber 201 along with the cleaning liquid. The filter plate 217 fixed with the gear ring 216 rotates along with the gear ring 216 in the cleaning chamber 201 filled with the cleaning liquid, and the attachments brought out of the cleaning liquid are captured and rotated. When the filter plate 217 carrying the attachments contacts with the stripping brush 218 and generates friction, the stripping brush 218 brushes off the attachments on the filter plate 217. At this time, the attachments are blocked by the position of the stripping brush 218. , so that the attachments are limited by the stripping brush 218 and sink to the bottom of the cleaning bin 201 in situ. According to the principle of gravity, the attachments fall into the connecting leakage pipe 219 connected to the bottom of the cleaning bin 201 while sinking to the bottom of the cleaning bin 201, and pass through the connecting leakage pipe 219 and the inside of the solenoid valve 221 until they fall into the collecting bin 222. At this time, the cleaning liquid filtered by the filter plate 217 can be directly reconnected through the sealing plate 202 and another group of structures to continue cleaning. When the attachments inside the collecting bin 222 gradually increase, the cleaning liquid inside the collecting bin 222 also gradually decreases. At this time, the solenoid valve 221 is closed, the collecting bin 222 is removed and the attachments collected therein are poured out, and then the solenoid valve 221 is reinstalled and continued to be opened for work.This method can be used for the heat exchanger equipment when it is used in the state of not being cleaned for a long period. When it is used in a short period, it can still be cleaned according to this method, and there is no need to replace the hot kerosene inside the heat exchange tube 203. Cleaning can be directly carried out and it is still effective. The solenoid valve 221 can cut off the connection with the collection bin 222 during normal heat exchange operation.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The heat transfer oil heat exchanger based on a multi-level temperature control mechanism is characterized in that: It includes a housing (1) and a cleaning mechanism (2), and the cleaning mechanism (2) is arranged inside the housing (1); The cleaning mechanism (2) comprises a worm (210), a cleaning strip (204), a crown gear (215), a cleaning brush (214), a filter plate (217) and a stripping brush (218). When the crown gear (215) is driven to rotate, it synchronously drives the cleaning strip (204) to rotate. The rotating cleaning strip (204) removes the attached matter on the inner wall of the tube. At the same time, the crown gear (215) drives the cleaning brush (214) to perform a secondary cleaning on the inner wall of the tube, and simultaneously removes the attached matter accidentally adhered to the cleaning strip (204). The attached matter that falls off then flows with the hot kerosene and is finally captured by the filter plate (217) and collected in the filter plate (217). The rotating filter plate (217) drives the captured attached matter to rotate together until it contacts the stripping brush (218). Finally, the attached matter on the filter plate (217) is scraped off by the stripping brush (218) and then removed from the filter plate. The cleaning mechanism (2) further comprises a cleaning chamber (201), wherein the cleaning chamber (201) is arranged on the inner side of the outer shell (1), and the outer side of the cleaning chamber (201) is connected to a heat exchange tube (203), and the inner side of the heat exchange tube (203) is rotatably connected to the cleaning bar (204), and a rotating cylinder (226) is arranged at one end of the cleaning bar (204), and a fixed disk (205) is rotatably connected to the outer side of the rotating cylinder (226), and a groove (206) is arranged on the inner side of the rotating cylinder (226), and a fixed rod (207) is arranged on the inner side of the fixed disk (205), and the fixed rod (207) is fixedly connected to the cleaning chamber (201), and the fixed rod (207) is located on the outer side of the rotating cylinder (226), and a limiting cylinder (208) is arranged on the inner side of the fixed disk (205);A plurality of connecting rods (209) are arranged on the outer side of the limiting cylinder (208), the connecting rods (209) are fixedly connected to the fixed disk (205), a worm (210) is rotatably connected to the inner side of the limiting cylinder (208), a fixed frame (211) is rotatably connected to the outer side of the worm (210), one end of the fixed frame (211) is fixedly connected to the connecting rod (209), a rotating rod (212) is rotatably connected to the inner side of the fixed frame (211), cleaning brushes (214) are arranged on the inner sides of both ends of the rotating rod (212), a worm gear (213) is arranged on the inner sides of the two cleaning brushes (214), the worm gear (213) is fixedly connected to the outer side of the rotating rod (212), the worm gear (213) is in threaded connection with the worm (210), a crown gear (215) is arranged at the other end of the worm (210), the crown gear (215) is fixedly connected to the other end of the cleaning strip (204), a connecting frame (224) is rotatably connected to the inner side of the cleaning bin (201), a toothed ring (216) is fixedly connected to the outer side of the connecting frame (224), a rotating groove is formed in the inner side of the cleaning bin (201), the toothed ring (216) is rotatably connected to the cleaning bin (201) through the rotating groove, the toothed ring (216) is meshed with the crown gear (215), a bevel gear rod (223) is rotatably connected to the inner side of the top of the cleaning bin (201), one end of the bevel gear rod (223) is a bevel gear, the other end is a cylindrical rotating rod, and the other end penetrates through the cleaning bin (201) and the housing (1) and is fixedly connected to a motor (225), and the bottom of the motor (225) is fixed to the outer side of the top of the housing (1).; 2. The heat transfer oil heat exchanger based on the multi-stage temperature control mechanism according to claim 1, characterized in that: A stripping brush (218) is installed at the inner bottom of the cleaning bin (201). The bevel gear rod (223) is engaged with the crown gear (215) through the bevel gear. A filter plate (217) is installed on the outer side of the connecting frame (224). The stripping brush (218) is composed of multiple groups of hard bristles with different lengths, and its whole is inclined at an angle of 45 degrees. The filter plate (217) is made of high-elastic rubber material.

3. The heat transfer oil heat exchanger based on a multi-stage temperature control mechanism according to claim 2, characterized in that: A connecting drain pipe (219) is communicated with the bottom of the cleaning bin (201). The outer side of the connecting drain pipe (219) penetrates through the housing (1) and is fixedly connected with a sealing mounting plate (220). The sealing mounting plate (220) is fixedly connected to the outer side of the housing (1). An electromagnetic valve (221) is arranged at the bottom of the connecting drain pipe (219), and the electromagnetic valve (221) is communicated with the connecting drain pipe (219).

4. The heat transfer oil heat exchanger based on a multi-stage temperature control mechanism according to claim 3, wherein: A collection bin (222) is arranged on the outer side of the bottom of the electromagnetic valve (221). The collection bin (222) is threadedly connected with the electromagnetic valve (221). A sealing plate (202) is installed on the outer side of the cleaning bin (201).

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