Electric heating heat-conducting oil furnace

Abstract

The embodiment of the invention provides an electric heating heat-conducting oil furnace. The electric heating heat-conducting oil furnace comprises a rack, a circulating oil pump and a control cabinet, the heating unit comprises a supporting transverse plate arranged on the rack, a first side plate and a second side plate which are arranged at the two ends of the bottom of the supporting transverse plate, a heating cylinder arranged on the first side plate and the second side plate, and a heater arranged in the heating cylinder; a liquid inlet pipe and a liquid outlet pipe are respectively arranged at two ends of the heating cylinder; the cooling unit comprises a temperature control mechanism, a cutting mechanism, a cooling mechanism and a blast pipe rotationally arranged on the periphery of the heating cylinder; the cooling mechanism comprises a spiral pipeline arranged on the outer wall of the heating cylinder and a water storage tank arranged on the supporting transverse plate, and the spiral pipeline is used for allowing cooling water in the water storage tank to circularly flow; the cut-off mechanism selectively controls one of the temperature control mechanism and the cooling mechanism to drive the blast pipe to rotate. And the heating cylinder can be rapidly and safely cooled.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of thermal oil furnaces, and in particular to an electrically heated thermal oil furnace. Background Art

[0002] The electric heating thermal oil furnace is a new type of special industrial furnace that is safe, energy-efficient, low-pressure and can provide high-temperature heat energy. It uses thermal oil as a heat carrier, circulates the heat carrier through a hot oil pump, and transfers heat to the heat-using equipment. The electric heating thermal oil furnace uses electricity as energy, converts electrical energy into heat energy through electric heating elements, uses organic heat carriers as heat transfer media, and circulates the thermal oil in the system through a high-temperature oil pump, so that it is heated repeatedly, thereby achieving the purpose of continuously obtaining the required heat energy for the heat-requiring equipment, and can meet the process temperature set in the production process and the requirements of high-precision temperature control.

[0003] At present, when the thermal oil heater in the electric heating thermal oil furnace stops working, the surface of the heating tube is still in a high temperature state at the moment of shutdown due to the high-temperature operation state. At this time, the thermal oil in the heating tube stops flowing, which will cause the local temperature of the thermal oil on the surface of the heating tube to be too high, thereby forming carbon deposits. After the carbon deposits are scaled in the heater, the temperature rise will slow down, the temperature will be uneven, and the aging and damage of the equipment will be accelerated. Even when a large amount of carbon deposits are deposited at the bend of the pipe, one-sided overheating and gas accumulation will occur, causing pipe cracks or oil spraying, resulting in fires and safety accidents.

[0004] Therefore, when the heater stops working, how to cool down the heating pipe is an urgent problem to be solved. The patent with the announcement number (CN218722293U) discloses a highly safe electric heating thermal oil furnace, including a work frame, a heating box and a control cabinet are respectively installed on the top of the work frame, a heater is installed inside the heating box, and a circulation pipeline is provided on one side of the heater, a water tank is installed on the top of the heating box, and a plurality of nozzles are provided at the bottom of the water tank, and the nozzles extend to the inside of the heating box and are located at the top of the heater, a heat sink is movably installed on one side of the heating box, and a plurality of heat sinks are provided on the surface of the heat sink, and a cooling fan is provided on the other side of the heating box, and the cooling fan is directly facing the side of the heater. The device can quickly reduce the heater to a normal temperature state through the coordinated use of the nozzle and the cooling fan, avoid the local temperature of the thermal oil on the surface of the electric heating pipe from being too high to form carbon deposits, prolong the service life, and greatly improve the safety of the equipment. This patent solves the problem of quickly cooling the heating tube when the heater stops working. However, the technical solution in this patent directly sprays water on the high-temperature heating tube. This cooling method is relatively drastic. Direct water spraying may cause the thermal oil in the heating tube to be contaminated by water, affecting the performance and service life of the thermal oil, and may even cause the entire thermal oil system to malfunction. Direct water spraying for cooling may cause the high-temperature heating tube to experience drastic temperature changes in a short period of time, which may easily lead to thermal stress concentration in the heating tube, and may even cause cracks and other damage, affecting the service life and safety of the equipment. Therefore, a better method is needed to solve the problem of cooling the heating tube. Summary of the invention

[0005] The embodiment of the present invention aims to solve at least one of the technical problems existing in the prior art, and provides an electrically heated thermal oil furnace.

[0006] The embodiment of the present invention provides an electrically heated thermal oil furnace, comprising a frame, a circulating oil pump and a control cabinet; and further comprising: A heating unit, the heating unit comprising a supporting transverse plate arranged on the frame, a first side plate and a second side plate arranged at two ends of the bottom of the supporting transverse plate, a heating cylinder arranged on the first side plate and the second side plate, and a heater arranged in the heating cylinder; a liquid inlet pipe and a liquid outlet pipe are respectively arranged at two ends of the heating cylinder; A cooling unit, the cooling unit includes a temperature control mechanism, a cut-off mechanism, a cooling mechanism and a blast pipe rotatably arranged on the periphery of the heating cylinder; the cooling mechanism includes a spiral pipe arranged on the outer wall of the heating cylinder and a water storage tank arranged on the supporting cross plate, the spiral pipe is used for circulating cooling water in the water storage tank; wherein the cut-off mechanism selectively controls one of the temperature control mechanism and the cooling mechanism to drive the blast pipe to rotate.

[0007] In some possible embodiments, the heater includes a heating plate arranged at one end of the heating tube close to the liquid inlet pipe, a plurality of heat pipes spaced apart on the heating plate, and a plurality of supporting partitions spaced apart on the inner wall of the heating tube along the axial length direction of the heating tube; a plurality of plum blossom holes are spaced apart on the supporting partitions, and the plum blossom holes correspond one-to-one to the heat pipes.

[0008] In some possible embodiments, the plurality of heat pipes are distributed at equal intervals in a matrix; and / or the plurality of plum blossom holes are distributed at equal intervals in a matrix.

[0009] In some possible embodiments, the cooling unit further includes a first rotating bracket disposed on the first side plate and a second rotating bracket fixedly disposed on the second side plate, and the blast pipe includes two rotating rings and a plurality of blades; and, One of the rotating rings is rotatably disposed on the first rotating bracket, the other rotating ring is rotatably disposed on the second rotating bracket, and the plurality of blades are arranged between the two rotating rings at intervals in a ring shape.

[0010] In some possible embodiments, the temperature control mechanism further includes a gearbox disposed on the first side panel; The gearbox has an input shaft and an output shaft, wherein the input shaft is drivingly connected to the rotating tube, and the output shaft is drivingly connected to a rotating ring mounted on the first rotating bracket.

[0011] In some possible embodiments, the cutting mechanism includes a bearing bracket fixedly arranged on the gearbox, a bearing shaft rotatably arranged on the bearing bracket, a driving pulley and a top ring arranged on the bearing shaft, a transmission sleeve coaxially keyed with the bearing shaft, a first chuck arranged on the output shaft, a second chuck arranged at the end of the transmission sleeve, a return spring sleeved on the transmission sleeve, a transmission pulley arranged on a rotating ring close to the first side plate, a push rod arranged beside the bearing bracket, and a push plate arranged on the telescopic shaft of the push rod; A transmission belt is arranged between the driving pulley and the transmission pulley, one end of the push plate away from the push rod is rotatably connected to the transmission sleeve, one end of the return spring is connected to the top ring, and the other end is connected to the push plate.

[0012] In some possible embodiments, the temperature control mechanism also includes a transfer tube coaxial with the liquid inlet pipe and connected to the first side plate, a rotating tube rotatably arranged between the transfer tube and the liquid inlet pipe, and a driving impeller arranged in the rotating tube, and the rotating tube is transmission-connected to the blast pipe.

[0013] In some possible embodiments, the cooling mechanism further includes a storage box disposed at one end of the heating cylinder close to the liquid outlet pipe, a release pipe and a return pipe disposed on the storage box, a mounting box disposed on the second side panel, a rotating shaft rotatably disposed in the mounting box, a driving gear disposed on the rotating shaft, a power gear ring disposed on a rotating ring close to the second side panel, a wind wheel rotatably disposed in the mounting box, a transfer box disposed on the second side panel, and a compressor fixedly disposed beside the transfer box; The installation box is provided with an air inlet pipe and an air outlet pipe, the wind wheel is coaxially fixedly connected to the rotating shaft, and the power ring gear is meshed with the driving gear; a pressure relief valve is provided on the storage box, the release pipe is connected with the air inlet pipe and a solenoid valve is provided on the release pipe, the air outlet pipe is connected with the interior of the transfer box, the inlet of the compressor is connected with the interior of the transfer box, and the outlet is connected with the return pipe.

[0014] In some possible embodiments, the spiral pipe is provided with a water outlet at one end close to the first side plate, and a water inlet at one end close to the second side plate; The water inlet end is provided with a liquid inlet ball valve, and the control shaft of the liquid inlet ball valve is provided with a transmission gear.

[0015] In some possible embodiments, the cooling mechanism further includes a piston tube disposed on the second side plate, a piston rod elastically slidably disposed in the piston tube, and a transmission rack disposed on the piston rod; The transmission rack is meshed with the transmission gear, a shunt pipe is arranged on the air inlet pipe, the shunt pipe is connected to the piston pipe, and the water inlet end and the water outlet end are both connected to the inside of the water storage tank.

[0016] The electric heating thermal oil furnace of the embodiment of the present invention is provided with a spiral pipe and a blast pipe on the periphery of the heating cylinder, so that after the equipment stops working, the blast pipe blows air and the coolant flows in the spiral pipe to exchange heat with the heating cylinder, so that the heating cylinder has dual cooling of air cooling and water cooling, thereby preventing the equipment from being damaged by excessive temperature. In addition, the electric heating thermal oil furnace of the embodiment of the present invention uses the principle of thermal expansion and contraction to use high-pressure airflow to blow air cooling to form rotation, and then drives the blast pipe to rotate, thereby saving energy and production costs. Finally, the electric heating thermal oil furnace of the embodiment of the present invention is safer than the traditional cooling method of directly spraying water on the high-temperature heating cylinder. The cooling water flows in the spiral pipe to perform heat exchange and cooling, and the temperature change is relatively gentle, which can effectively reduce the influence of thermal stress on the heating cylinder and ensure that the equipment can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The three-dimensional structure of the electric heating thermal oil furnace of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 is a schematic diagram of the three-dimensional structure of the first side plate and the second side plate of an embodiment of the present invention; Figure 3 The three-dimensional structure of the electric heating thermal oil furnace of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 4 1 is a front view of an electrically heated thermal oil furnace according to an embodiment of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the heating cylinder and the spiral pipe in an embodiment of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of the blast pipe according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure decomposition of the heating tube and the heater according to an embodiment of the present invention; Figure 8 is a plan view of a plum blossom hole provided on a supporting partition according to an embodiment of the present invention; Fig. 9 is a schematic diagram of the three-dimensional structure of the first side panel of an embodiment of the present invention; Fig.10 is a schematic diagram of the exploded three-dimensional structure of the first chuck and the second chuck of an embodiment of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the storage box according to an embodiment of the present invention.

[0019] The numbers in the figure are: 1. Supporting horizontal plate; 2. First side plate; 3. Second side plate; 4. Heating cylinder; 5. Heater; 6. Heating plate; 7. Heat pipe; 8. Supporting partition; 9. Plum blossom hole; 10. Liquid inlet pipe; 11. Liquid outlet pipe; 12. First rotating bracket; 13. Blowing pipe; 14. Rotating ring; 15. Blade; 16. Driving pulley; 17. Power gear ring; 18. Second rotating bracket; 19. Transfer tube; 20. Rotating tube; 21. Driving impeller; 22. Gearbox; 23. Input shaft; 24. Output shaft; 25. First chuck; 26. Bearing bracket; 27. Bearing shaft; 28. Driving pulley; 29. ​​Driving belt ; 30. Transmission sleeve; 31. Second chuck; 32. Top ring; 33. Return spring; 34. Push rod; 35. Push plate; 36. Spiral pipe; 37. Water inlet end; 38. Liquid inlet ball valve; 39. Transmission gear; 40. Water outlet end; 41. Piston tube; 42. Piston rod; 43. Transmission rack; 44. Water storage tank; 45. Storage tank; 46. Release pipe; 47. Solenoid valve; 48. Pressure relief valve; 49. Return pipe; 50. Installation box; 51. Rotating shaft; 52. Wind wheel; 53. Driving gear; 54. Air inlet pipe; 55. Diverter pipe; 56. Air outlet pipe; 57. Transfer box; 58. Compressor. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0021] Unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. "Including" or "comprising" used in the embodiments of the present invention neither limit the shapes, numbers, steps, actions, operations, components, originals and / or their groups mentioned, nor exclude the appearance or addition of one or more other different shapes, numbers, steps, actions, operations, components, originals and / or their groups, or the addition of these. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships, and the technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail. In all examples shown and discussed here, any specific other examples may have different values. It should be noted that similar symbols and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the embodiments of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the embodiments of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of the different embodiments or examples, without contradiction.

[0024] Below, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described here.

[0025] The embodiment of the present invention relates to an electrically heated thermal oil furnace, comprising a frame, a circulating oil pump, a control cabinet, a heating unit and a cooling unit.

[0026] For example, Figures 1 to 11 As shown, the heating unit comprises a supporting transverse plate 1 arranged on the frame, a first side plate 2 and a second side plate 3 symmetrically arranged at both ends of the bottom of the supporting transverse plate 1, a heating cylinder 4 arranged on the first side plate 2 and the second side plate 3, and a heater 5 coaxially arranged in the heating cylinder 4. A liquid inlet pipe 10 and a liquid outlet pipe 11 are respectively arranged at both ends of the heating cylinder 4. In a preferred embodiment, the liquid inlet pipe 10 is opened at one end of the heating cylinder 4 close to the first side plate 2, and the liquid outlet pipe 11 is opened at one end of the heating cylinder 4 close to the second side plate 3.

[0027] For example, Figures 1 to 11As shown, the temperature reduction unit includes a temperature control mechanism, a cut-off mechanism, a cooling mechanism, and a blast pipe 13 rotatably arranged on the periphery of the heating cylinder 4. The cooling mechanism includes a spiral pipe 36 arranged on the outer wall of the heating cylinder 4 and a water storage tank 44 arranged on the supporting horizontal plate 1. The spiral pipe 36 is used for circulating cooling water in the water storage tank 44. The cut-off mechanism selectively controls one of the temperature control mechanism and the cooling mechanism to drive the blast pipe 13 to rotate.

[0028] In some embodiments, the temperature control mechanism has a rotating drive end, which is used to drive the blast pipe 13 to rotate. The cooling mechanism also includes a high-speed rotating output end, which is used to drive the blast pipe 13 to rotate at high speed. The cutting mechanism has a cutting output end, which is used to cut off the connection between the blast pipe 13 and the rotating drive end of the temperature control mechanism when the blast pipe 13 rotates at high speed.

[0029] Working principle: It should be noted that a controller is provided in the control cabinet. First, the heater 5 is used in conjunction with the circulating oil pump to heat the heat transfer oil and circulate it in the system to provide heat to the heat-requiring equipment. In the process of heating, the rotating drive end drives the blast pipe 13 to rotate. The blast pipe 13 rotates to form a wind flow outside the heating tube 4 to ensure that the temperature of the heating tube 4 will not be too high when the equipment is running, which is conducive to the long-term operation of the equipment. When the setting stops working, the cutting mechanism cuts off the connection between the blast pipe 13 and the rotating drive end. At the same time, the high-speed rotating output end of the cooling mechanism drives the blast pipe 13 to rotate at a high speed, so that The wind flow velocity generated by the blast pipe 13 becomes faster, thereby cooling the heating tube 7 with cold air. At the same time, the cooling water in the water tank 44 also circulates through the spiral pipe 36, so that the cooling water flows in the spiral pipe 36 to take away the heat of the heating tube 4 to form water cooling. At this point, through the blowing of the blast pipe 13 and the flow of cooling water in the spiral pipe 36, when the equipment stops working, the outside of the heating tube 4 can be cooled by air and water at the same time, so that the heating tube 4 can be cooled quickly and safely. When the temperature in the heating tube 4 drops to room temperature, the circulating oil pump stops working and the heat transfer oil stops flowing.

[0030] In order to show the detailed structure of the heater 5, the following features are also specifically provided: The heater 5 comprises a heating plate 6 coaxially fixedly arranged on one end of the heating cylinder 4 near the liquid inlet pipe 10, a plurality of heat pipes 7 evenly spaced and distributed in a matrix on the heating plate 6, and a plurality of support baffles 8 evenly spaced and fixedly arranged on the inner wall of the heating cylinder 4 along the axial length direction of the heating cylinder 4. The support baffles 8 are provided with a plurality of plum blossom holes 9 evenly spaced in a matrix (combined with Figure 7 and Figure 8 ), the number of plum blossom holes 9 corresponds to the number of heat pipes 7 one by one.

[0031] By arranging plum blossom holes 9 on the supporting partition 8 to support the heat pipe 7, the equipment can be more stable during operation. Moreover, by adopting the plum blossom holes 9 to support the heat pipe 7, the temperature uniformity in the heating tube 4 and the average outlet temperature are not much different. The coking probability of the supporting partition 8 with plum blossom holes 9 is lower than that of the traditional swirl-shaped support plate, diamond-shaped support plate and grid-shaped support plate.

[0032] In order to show the specific installation structure of the blast pipe 13, the following features are also specifically provided: The cooling unit further includes a first rotating bracket 12 fixedly disposed on the first side plate 2 and a second rotating bracket 18 fixedly disposed on the second side plate 3 (combined with Figure 4 and Fig. 9 ), the blast pipe 13 includes two rotating rings 14 and a plurality of blades 15, one rotating ring 14 is rotatably arranged on the first rotating bracket 12, and the other rotating ring 14 is rotatably arranged on the second rotating bracket 18, and the plurality of blades 15 are fixedly arranged between the two rotating rings 14 in a ring shape at equal intervals.

[0033] When the device is running, a plurality of blades 15 rotate to form wind flow, and the wind flow wraps around the heating tube 7, so the contact area between the wind flow and the heating tube 7 is larger, and the cooling effect is better.

[0034] In order to show the detailed structure of the rotary drive end of the temperature control mechanism, the following features are also specifically set: The temperature control mechanism includes a transfer tube 19 which is coaxial with the liquid inlet pipe 10 and fixedly connected to the first side plate 2, a rotating tube 20 which is rotatably arranged between the transfer tube 19 and the liquid inlet pipe 10, and a driving impeller 21 which is coaxially fixedly arranged in the rotating tube 20. The rotating tube 20 is transmission-connected to the blast pipe 13.

[0035] The rotating tube 20 is the rotating driving end of the temperature control mechanism.

[0036] It should be noted that the transfer tube 19 is connected to the circulating oil pump, which pumps the heat transfer oil from the transfer tube 19 to the liquid inlet pipe 10. When the heat transfer oil flows, the heat transfer oil causes the driving impeller 21 to rotate, and the driving impeller 21 rotates to rotate the rotating tube 20, and the rotating tube 20 rotates to drive the blast tube 13 to rotate.

[0037] In order to enable the rotational power of the water flow driving the impeller 21 to drive the blast pipe 13 to rotate, the following features are specifically provided: The temperature control mechanism also includes a gearbox 22 fixedly arranged on the first side plate 2, the gearbox 22 has an input shaft 23 and an output shaft 24, the input shaft 23 is connected to the rotating tube 20 through a pulley, and the output shaft 24 is transmission-connected to the rotating ring 14 installed on the first rotating bracket 12.

[0038] When the rotating tube 20 rotates, the rotating tube 20 rotates and drives the input shaft 23 of the gearbox 22 to rotate through the pulley. Then the rotational power is transmitted through the gearbox 22, causing the output shaft 24 to rotate. The output shaft 24 rotates and drives the rotating ring 14 to rotate. The rotating ring 14 rotates and drives all the blades 15 to rotate to form wind flow.

[0039] In order to show the detailed structure of the cutting mechanism, the following features are also set: The cutting mechanism includes a bearing bracket 26 fixedly arranged on the gearbox 22, a bearing shaft 27 rotatably arranged on the bearing bracket 26, a driving pulley 28 coaxially fixedly arranged on the bearing shaft 27, a transmission sleeve 30 coaxially keyed with the bearing shaft 27, a first chuck 25 coaxially fixedly arranged on the output shaft 24, a second chuck 31 coaxially fixedly arranged at the end of the transmission sleeve 30, a top ring 32 coaxially fixedly arranged on the bearing shaft 27, a return spring 33 coaxially sleeved on the transmission sleeve 30, a transmission pulley 16 coaxially fixedly arranged on the rotating ring 14 close to the first side plate 2, a push rod 34 fixedly arranged on the side of the bearing bracket 26, and a push plate 35 fixedly arranged on the telescopic shaft of the push rod 34, a transmission belt 29 is arranged between the driving pulley 28 and the transmission pulley 16, one end of the push plate 35 away from the push rod 34 is rotatably connected to the transmission sleeve 30, one end of the return spring 33 is connected to the top ring 32, and the other end is connected to the push plate 35.

[0040] It should be noted that when the thermal oil furnace is operating normally, under the action of the reset spring 33, the first chuck 25 is clamped together with the second chuck 31. When the rotational power of the rotating tube 20 is transmitted through the gearbox 22, the output shaft 24 of the gearbox 22 drives the first chuck 25 to rotate, and then transmits through the second chuck 31, the transmission sleeve 30, the load-bearing shaft 27, the active pulley 28, the transmission belt 29 and the transmission pulley 16, thereby driving the rotating ring 14 installed on the first rotating bracket 12 to rotate, and then drives the blades 15 and another rotating ring 14 installed on the second rotating bracket 18 to rotate. When the equipment stops working, the controller in the control cabinet controls the push rod 34 to drive the transmission sleeve 30 to move along the axis of the load-bearing shaft 27 through the push plate 35, thereby separating the second chuck 31 from the first chuck 25, so as to facilitate the subsequent high-speed rotation output end to drive the blast pipe 13 to rotate rapidly.

[0041] In order to show the detailed structure of the cooling mechanism, the following features are also set: The cooling mechanism also includes a storage box 45 (combined with a storage box 45) coaxially fixedly arranged at one end of the heating cylinder 4 close to the liquid outlet pipe 11. Figure 2 and Fig.11), a release pipe 46 and a return pipe 49 fixedly arranged on the storage box 45, a mounting box 50 fixedly arranged on the second side plate 3, a rotating shaft 51 rotatably arranged in the mounting box 50, and a driving gear 53 (such as Figure 3 As shown), a power gear ring 17 coaxially fixedly arranged on a rotating ring 14 close to the second side plate 3, a wind wheel 52 rotatably arranged in an installation box 50, a transfer box 57 fixedly arranged on the second side plate 3 and a compressor 58 fixedly arranged next to the transfer box 57, an air inlet pipe 54 and an air outlet pipe 56 are arranged on the installation box 50, the wind wheel 52 is coaxially fixedly connected with the rotating shaft 51, the power gear ring 17 is meshed with the driving gear 53, a pressure relief valve 48 is arranged on the storage box 45, a release pipe 46 is communicated with the air inlet pipe 54, a solenoid valve 47 is arranged on the release pipe 46, the air outlet pipe 56 is communicated with the inside of the transfer box 57, the inlet of the compressor 58 is connected to the inside of the transfer box 57, and the outlet is connected to the return pipe 49.

[0042] The driving gear 53 is the high-speed rotating output end of the cooling mechanism.

[0043] It should be noted that the storage box 45 stores an expansion medium, which can release gas when heated. When the device is working normally, the temperature of the heating cylinder 4 gradually rises, and the expansion medium in the storage box 45 expands and releases gas when heated, causing the pressure in the storage box 45 to gradually increase until the temperature of the heating cylinder 4 rises to the normal working range, and the expansion medium no longer releases gas, but at this time a lot of high-pressure gas has accumulated in the storage box 45, and the pressure relief valve 48 on the storage box 45 is preset with a pressure relief value in advance to prevent damage caused by excessive pressure in the storage box 45. When the equipment stops working, the controller in the control cabinet first controls the push rod 34 to start separating the first chuck 25 from the second chuck 31, and then controls the solenoid valve 47 to open. After the solenoid valve 47 is opened, the high-pressure gas rushes into the air inlet pipe 54 from the release pipe 46, and then blows the wind wheel 52 into the transfer box 57. The wind wheel 52 then rotates to drive the rotating shaft 51 to rotate, and the rotation of the rotating shaft 51 drives the driving gear 53 to rotate. The driving gear 53 rotates through the power ring gear 17 to drive the rotating ring 14 to rotate, and then drives the blower pipe 13 to rotate at high speed, waiting for the temperature of the heating tube 4 to drop to room temperature, the solenoid valve 47 is closed, and the compressor 58 runs to compress the gas in the transfer box 57, and then returns to the storage box 45 through the reflux pipe 49 for the next work.

[0044] In order to show the detailed structure of the spiral pipe 36, the following features are also specifically set: A water outlet 40 is provided at one end of the spiral pipe 36 close to the first side plate 2, and a water inlet 37 is provided at one end close to the second side plate 3. A liquid inlet ball valve 38 is provided on the water inlet end 37, and a transmission gear 39 is coaxially fixedly provided on the control shaft of the liquid inlet ball valve 38. The cooling mechanism also includes a piston tube 41 fixedly provided on the second side plate 3, a piston rod 42 coaxially elastically slidably provided in the piston tube 41, and a transmission rack 43 fixedly provided on the piston rod 42, the transmission rack 43 is meshed with the transmission gear 39, a shunt pipe 55 is provided on the air inlet pipe 54, the shunt pipe 55 is connected to the piston tube 41, and the water inlet end 37 and the water outlet end 40 are both connected to the inside of the water storage tank 44.

[0045] It should be noted that a water pump is provided in the water tank 44. When the high-pressure gas enters the air inlet pipe 54, a part of the high-pressure gas will enter the diversion pipe 55 and enter the piston tube 41, and then the piston rod 42 will be pushed out. The piston rod 42 pushes out to drive the transmission rack 43 to move, and the transmission rack 43 moves to engage the transmission gear 39 so that the liquid inlet ball valve 38 opens the water inlet end 37. Then the controller of the control cabinet controls the water pump in the water tank 44 to pump the cooling water from the water inlet end 37 into the spiral pipe 36, and then returns to the water tank 44 from the water outlet end 40. This cycle is repeated, so that the cooling water completes heat exchange with the heating tube 4 in the spiral pipe 36, and takes away the heat on the heating tube 4, thereby realizing safe water cooling of the heating tube 4.

[0046] The working principle of this device is: When the thermal oil furnace is operating normally, the flow of thermal oil drives the driving impeller 21 to rotate, and the driving impeller 21 rotates to rotate the rotating tube 20. The rotation of the rotating tube 20 is accelerated by the gearbox 22 to drive the blast pipe 13 to rotate. In this way, when the equipment is operating normally, the blast pipe 13 can rotate at a low speed, ensuring that the heating tube 4 can always be within the normal temperature range, protecting the equipment from long-term operation.

[0047] When the equipment stops operating, the controller controls the push rod 34 to separate the first chuck 25 and the second chuck 31, and then the solenoid valve 47 opens, and the high-pressure gas rushes into the air inlet pipe 54 from the release pipe 46, and then blows the wind wheel 52 into the transfer box 57, and then the wind wheel 52 rotates to drive the rotating shaft 51 to rotate, and the rotation of the rotating shaft 51 drives the driving gear 53 to rotate, and the driving gear 53 rotates through the power ring gear 17 to drive the rotating ring 14 to rotate, and then drives the blower pipe 13 to rotate at high speed.

[0048] When the high-pressure gas enters the air inlet pipe 54, a part of the high-pressure gas will enter the shunt pipe 55 and enter the piston tube 41, and then the piston rod 42 is pushed out, and the piston rod 42 pushes the transmission rack 43 to move, and the transmission rack 43 moves to engage the transmission gear 39 so that the liquid inlet ball valve 38 opens the water inlet end 37, and then the controller of the control cabinet controls the water pump in the water tank 44 to pump the cooling water from the water inlet end 37 into the spiral pipe 36, and then returns to the water tank 44 from the water outlet end 40, and so on. The cycle is achieved, and the cooling water completes the heat exchange with the heating tube 4 in the spiral pipe 36, and takes away the heat on the heating tube 4. So far, through the above-mentioned water cooling and air cooling, the heating tube 4 can be safely cooled down in a short time after the equipment stops working, ensuring the long-term use of the equipment.

[0049] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An electrically heated thermal oil furnace, comprising a frame, a circulating oil pump and a control cabinet; characterized in that: Also includes: A heating unit, the heating unit comprising a supporting transverse plate arranged on the frame, a first side plate and a second side plate arranged at two ends of the bottom of the supporting transverse plate, a heating cylinder arranged on the first side plate and the second side plate, and a heater arranged in the heating cylinder; a liquid inlet pipe and a liquid outlet pipe are respectively arranged at two ends of the heating cylinder; A cooling unit, the cooling unit includes a temperature control mechanism, a cut-off mechanism, a cooling mechanism and a blast pipe rotatably arranged on the periphery of the heating cylinder; the cooling mechanism includes a spiral pipe arranged on the outer wall of the heating cylinder and a water storage tank arranged on the supporting cross plate, the spiral pipe is used for circulating cooling water in the water storage tank; wherein the cut-off mechanism selectively controls one of the temperature control mechanism and the cooling mechanism to drive the blast pipe to rotate.

2. The electrically heated thermal oil furnace according to claim 1, characterized in that: The heater comprises a heating plate arranged at one end of the heating cylinder close to the liquid inlet pipe, a plurality of heat pipes spaced apart on the heating plate, and a plurality of supporting partitions spaced apart on the inner wall of the heating cylinder along the axial length direction of the heating cylinder; A plurality of plum blossom holes are arranged at intervals on the supporting partition, and the plum blossom holes correspond to the heat pipes one by one.

3. The electrically heated thermal oil furnace according to claim 2, characterized in that: The plurality of heat pipes are distributed in a matrix with equal intervals; and / or the plurality of plum blossom holes are distributed in a matrix with equal intervals.

4. The electrically heated thermal oil furnace according to claim 1, characterized in that: The cooling unit further includes a first rotating bracket disposed on the first side plate and a second rotating bracket fixedly disposed on the second side plate, and the blast pipe includes two rotating rings and a plurality of blades; and One of the rotating rings is rotatably disposed on the first rotating bracket, the other rotating ring is rotatably disposed on the second rotating bracket, and the plurality of blades are arranged between the two rotating rings at intervals in a ring shape.

5. The electrically heated thermal oil furnace according to claim 4, characterized in that: The temperature control mechanism also includes a transfer tube coaxial with the liquid inlet tube and connected to the first side plate, a rotating tube rotatably arranged between the transfer tube and the liquid inlet tube, and a driving impeller arranged in the rotating tube, and the rotating tube is transmission-connected to the blast tube.

6. The electrically heated thermal oil furnace according to claim 5, characterized in that: The temperature control mechanism also includes a gearbox disposed on the first side plate; The gearbox has an input shaft and an output shaft, wherein the input shaft is drivingly connected to the rotating tube, and the output shaft is drivingly connected to a rotating ring mounted on the first rotating bracket.

7. The electrically heated thermal oil furnace according to claim 6, characterized in that: The cutting mechanism includes a bearing bracket fixedly arranged on the gearbox, a bearing shaft rotatably arranged on the bearing bracket, a driving pulley and a top ring arranged on the bearing shaft, a transmission sleeve coaxially keyed with the bearing shaft, a first chuck arranged on the output shaft, a second chuck arranged at the end of the transmission sleeve, a return spring sleeved on the transmission sleeve, a transmission pulley arranged on a rotating ring close to the first side plate, a push rod arranged beside the bearing bracket, and a push plate arranged on the telescopic shaft of the push rod; A transmission belt is arranged between the driving pulley and the transmission pulley, one end of the push plate away from the push rod is rotatably connected to the transmission sleeve, one end of the return spring is connected to the top ring, and the other end is connected to the push plate.

8. An electrically heated thermal oil furnace according to any one of claims 1 to 7, characterized in that: The cooling mechanism further includes a storage box disposed at one end of the heating cylinder close to the liquid outlet pipe, a release pipe and a return pipe disposed on the storage box, a mounting box disposed on the second side plate, a rotating shaft rotatably disposed in the mounting box, a driving gear disposed on the rotating shaft, a power gear ring disposed on a rotating ring close to the second side plate, a wind wheel rotatably disposed in the mounting box, a transfer box disposed on the second side plate, and a compressor fixedly disposed beside the transfer box; The installation box is provided with an air inlet pipe and an air outlet pipe, the wind wheel is coaxially fixedly connected to the rotating shaft, and the power ring gear is meshed with the driving gear; a pressure relief valve is provided on the storage box, the release pipe is connected with the air inlet pipe and a solenoid valve is provided on the release pipe, the air outlet pipe is connected with the interior of the transfer box, the inlet of the compressor is connected with the interior of the transfer box, and the outlet is connected with the return pipe.

9. The electrically heated thermal oil furnace according to claim 8, characterized in that: The spiral pipe is provided with a water outlet at one end close to the first side plate, and a water inlet at one end close to the second side plate; The water inlet end is provided with a liquid inlet ball valve, and the control shaft of the liquid inlet ball valve is provided with a transmission gear.

10. The electrically heated thermal oil furnace according to claim 9, characterized in that: The cooling mechanism further comprises a piston tube disposed on the second side plate, a piston rod elastically slidably disposed in the piston tube, and a transmission rack disposed on the piston rod; The transmission rack is meshed with the transmission gear, a shunt pipe is arranged on the air inlet pipe, the shunt pipe is connected to the piston pipe, and the water inlet end and the water outlet end are both connected to the inside of the water storage tank.

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