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CN-121994049-A - Prevent high-efficient heat exchanger that high viscosity waste oil prevents blocking up

CN121994049ACN 121994049 ACN121994049 ACN 121994049ACN-121994049-A

Abstract

The invention discloses a high-efficiency heat exchanger for preventing high-viscosity waste oil from blocking, which relates to the field of heat exchangers and solves the problems that the inner wall of equipment with constant flow velocity is easy to scale and is difficult to continuously assist in cleaning impurities on the inner wall in the using process of the high-efficiency heat exchanger, and the high-efficiency heat exchanger comprises a base, an inner cylinder, a shell cylinder, a heat exchange mechanism and a impurity removing mechanism, wherein the heat exchange mechanism comprises a spiral plate and a rubber gasket, a conveying cavity for conveying a refrigerant is formed in the spiral plate, according to the invention, the waste oil is conveyed from top to bottom along the spiral plate through the heat exchange mechanism, so that the flow speed and the shearing force of the waste oil are changed, the impurity deposition is reduced, the waste oil is in heat transfer with the refrigerant in the conveying cavity, the energy utilization is realized, the impurity removal mechanism drives the shell barrel to slowly rotate, the outer wall of the spiral plate and the rubber gasket slide relatively, the impurities adhered to the inner wall of the rubber gasket are scraped in an auxiliary manner, the accumulation of the impurities is reduced, and the blockage is avoided.

Inventors

  • XU JIN
  • LIANG WEI

Assignees

  • 远大(湖南)再生资源股份有限公司

Dates

Publication Date
20260508
Application Date
20260310

Claims (10)

  1. 1. An efficient heat exchanger for preventing high viscosity waste oil from blocking, comprising: The device comprises a base (1), wherein an inner cylinder (2) is fixedly connected to the base (1), and a shell cylinder (3) is rotatably connected to the base (1); Further comprises: The heat exchange mechanism comprises a spiral plate (4) fixedly arranged on the outer wall of the inner cylinder (2), the screw pitch of the spiral plate (4) is periodically changed, a rubber gasket (5) is arranged on the inner wall of the outer cylinder (3), the outer wall of the spiral plate (4) is in sliding fit with the inner wall of the rubber gasket (5), a conveying cavity (6) for conveying a refrigerant is formed in the spiral plate (4), and the heat exchange mechanism can convey waste oil from top to bottom along the spiral plate (4); The impurity removing mechanism is arranged on the base (1) and is used for driving the outer shell tube (3) to slowly rotate, so that relative sliding is generated between the outer wall of the spiral plate (4) and the rubber gasket (5), and impurities adhered to the inner wall of the rubber gasket (5) are scraped in an auxiliary mode.
  2. 2. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking is characterized in that the heat exchange mechanism further comprises a threaded sleeve (7) rotationally connected with the outer wall of the top end of the outer shell barrel (3), an input pipe (8) is arranged on the upper side of the outer shell barrel (3), the outer wall of the input pipe (8) can be in threaded connection with the inner wall of the threaded sleeve (7), a liquid outlet pipe (9) is fixedly connected to the input pipe (8), a conical block (10) is fixedly connected to the bottom end of the liquid outlet pipe (9), a plug block (11) is fixedly connected to the bottom of the conical block (10), a plug groove (12) capable of being plugged with the plug block (11) in the vertical direction is formed in the top end of the inner barrel (2), and a conveying piece for assisting in conveying and communicating refrigerant and waste oil is arranged on the base (1).
  3. 3. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking is characterized in that the conveying part comprises a bottom plate (13) fixedly installed at the bottom of the shell cylinder (3), a collecting frame (14) is fixedly connected to the base (1), the bottom plate (13) and the collecting frame (14) are all in a ring shape, a volute (15) is fixedly connected between the base (1) and the bottom of the inner cylinder (2), the bottom of the inner cylinder (2) is communicated with the input end of the volute (15), the bottom end of the conveying cavity (6) is communicated with the output end of the volute (15), the upper side and the lower side of the bottom plate (13) are respectively in joint rotation with the surfaces of the volute (15) and the collecting frame (14), and a plurality of groups of communication holes (16) communicated with the collecting frame (14) are formed in the bottom plate (13).
  4. 4. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking is characterized in that the heat exchange mechanism further comprises a liquid inlet pipe (17) fixedly installed on the input pipe (8) and the conical block (10), a first pipeline (18) capable of being in plug-in connection with the bottom end of the liquid inlet pipe (17) is arranged on the inner cylinder (2), a conveying groove (19) communicated with the bottom end of the liquid outlet pipe (9) is arranged in the conical block (10), a second pipeline (20) used for communicating the upper end of the conveying cavity (6) with the conveying groove (19) is arranged on the inner cylinder (2), and an output pipe (21) is connected to the side surface of the collecting frame (14) in a communication mode.
  5. 5. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking is characterized in that the impurity removing mechanism comprises a metal net pipe (22) fixedly installed on the outer wall of the rubber gasket (5), a plurality of groups of guide strips (23) capable of sliding and guiding the inner wall of the outer shell barrel (3) along the vertical direction are fixedly connected to the outer wall of the metal net pipe (22), a rubber ring (24) is fixedly connected to the top end of the metal net pipe (22), a connecting ring (25) is fixedly connected to the bottom end of the metal net pipe (22), a plurality of groups of threaded rods (26) are connected to the inner wall of the outer shell barrel (3) in a rotating mode, a lifting ring (27) is connected to the inner wall of the outer shell barrel (3) in a sliding mode along the vertical direction, a plurality of groups of threaded rods (26) penetrate through the lifting ring (27) and are in threaded connection with the lifting ring (27), and a driving piece for controlling the rotating states of the threaded rods (26) and the outer shell barrel (3) is arranged on the base (1).
  6. 6. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking according to claim 5, wherein the driving piece comprises a double-sided gear ring (28) rotationally connected with the outer wall of the outer shell cylinder (3), multiple groups of gear blocks are uniformly arranged on the inner wall and the outer wall of the double-sided gear ring (28) respectively, a first gear (30) meshed with the inner wall of the double-sided gear ring (28) is coaxially and fixedly connected with the bottom end of the threaded rod (26), a first motor (31) and a second motor (32) are fixedly connected onto the base (1), a second gear (33) is coaxially and fixedly connected with the output end of the second motor (32), the second gear (33) is meshed with the outer wall of the double-sided gear ring (28), and a control piece for controlling the rotation states of the outer shell cylinder (3) and the double-sided gear ring (28) is arranged on the outer shell cylinder (3).
  7. 7. The efficient heat exchanger capable of preventing high-viscosity waste oil from being blocked according to claim 6, wherein the impurity removing mechanism further comprises a driving shaft (34) fixedly installed at the output end of the first motor (31), an impeller (35) is rotationally connected to the volute (15), the driving shaft (34) penetrates through the volute (15) and is rotationally connected with the volute (15), the driving shaft (34) penetrates through the impeller (35) and is fixedly connected with the impeller (35) coaxially, the upper end of the driving shaft (34) is connected with a stirring shaft (36) through a speed reducer in a transmission mode, the top end of the stirring shaft (36) is rotationally connected with the inner wall of the inner barrel (2), a third gear (37) is fixedly connected to the outer wall of the driving shaft (34), an inner gear ring (38) is fixedly connected to the bottom of the bottom plate (13), and the third gear (37) is in transmission connection with the inner gear ring (38).
  8. 8. The efficient heat exchanger capable of preventing high-viscosity waste oil from blocking according to claim 6, wherein the control piece comprises an electric telescopic rod (39) fixedly installed on the outer shell tube (3), a lifting frame (40) is fixedly connected to a telescopic end of the electric telescopic rod (39), spring clamping blocks (41) are respectively arranged on the upper side and the lower side of the lifting frame (40), a first slot (42) capable of being spliced with the spring clamping blocks (41) below is formed in the base (1), and a plurality of groups of second slots (43) capable of being spliced with the spring clamping blocks (41) on the upper side are formed in the bottom surface of the double-sided gear ring (28).
  9. 9. The efficient heat exchanger for preventing high-viscosity waste oil from blocking according to claim 4, wherein a slope plate (29) fixedly connected with the inner wall of the input pipe (8) is fixedly connected above one side of the conical block (10) far away from the conveying groove (19), and the liquid inlet pipe (17) is positioned at one side far away from the conveying groove (19).
  10. 10. A high-efficiency heat exchanger for preventing clogging of high viscosity waste oil as set forth in claim 1, wherein said conveying chamber (6) is located at a position on the upper side of the cross section in the thickness direction of said spiral plate (4).

Description

Prevent high-efficient heat exchanger that high viscosity waste oil prevents blocking up Technical Field The invention relates to the technical field of heat exchangers, in particular to a high-efficiency heat exchanger capable of preventing high-viscosity waste oil from blocking. Background The regeneration treatment of the waste mineral oil is an important direction of industrial solid waste recycling, energy conservation and consumption reduction, and the waste heat recovery is required to be carried out on the high Wen Feiyou in the regeneration process so as to reduce the energy consumption of the system and improve the economical efficiency. Currently, main stream waste heat recovery equipment mostly adopts shell-and-tube type, plate type or conventional spiral plate type heat exchangers, and technical bottlenecks such as easy wall sticking, easy coking, flow channel blocking, rapid attenuation of heat exchange efficiency, frequent shutdown cleaning and the like commonly exist when waste mineral oil with high viscosity and containing colloid asphaltene and solid impurities is treated. The tube-shell type heat exchanger has tube bundle dead angles and baffle plate accumulation areas, is more easily blocked by viscous waste oil, needs disassembling equipment for clearing blockage, and has high operation and maintenance cost and poor continuity. The existing anti-blocking scheme is mostly dependent on chemical cleaning, online flushing or widening of a flow channel, can only relieve blocking, cannot realize continuous self-cleaning structurally, and is easy to cause waste oil secondary pollution and heat energy loss. Disclosure of Invention The invention aims to provide an efficient heat exchanger capable of preventing high-viscosity waste oil from blocking, which is convenient for reducing impurity accumulation and simultaneously can continuously and self-clean adhered impurities, so as to solve the problems in the background technology. The efficient heat exchanger comprises a base, a heat exchange mechanism and a impurity removing mechanism, wherein an inner cylinder is fixedly connected to the base, a shell cylinder is rotationally connected to the base, the heat exchange mechanism comprises a spiral plate fixedly installed on the outer wall of the inner cylinder, the screw pitch of the spiral plate is periodically changed, a rubber gasket is arranged on the inner wall of the shell cylinder, the outer wall of the spiral plate is in sliding fit with the inner wall of the rubber gasket, a conveying cavity for conveying a refrigerant is formed in the spiral plate, the heat exchange mechanism can convey waste oil along the spiral plate from top to bottom, the flow rate and the shearing force of the waste oil are changed, impurity deposition is reduced, heat transfer is carried out with the refrigerant in the conveying cavity, energy utilization is realized, the impurity removing mechanism is installed on the base and used for driving the shell cylinder to slowly rotate, relative sliding is generated between the outer wall of the spiral plate and the rubber gasket, impurities adhered to the inner wall of the rubber gasket are scraped off in an auxiliary manner, accumulation of impurities is reduced, and meanwhile, the impurities adhered to the impurities can be conveniently and continuously cleaned. Preferably, the heat exchange mechanism further comprises a threaded sleeve rotationally connected with the outer wall of the top end of the outer shell, an input pipe is arranged on the upper side of the outer shell, the outer wall of the input pipe can be in threaded connection with the inner wall of the threaded sleeve, a liquid outlet pipe is fixedly connected to the input pipe, a conical block is fixedly connected to the bottom end of the liquid outlet pipe, a plug-in block is fixedly connected to the bottom of the conical block, a plug-in groove capable of being plugged in the vertical direction is formed in the top end of the inner cylinder, a conveying part for assisting in conveying and communicating the refrigerant and the waste oil is arranged on the base, the waste oil is conveniently conveyed along the spiral plate from top to bottom, the flow speed and the shearing force of the waste oil are changed, impurity deposition is reduced, heat transfer is carried out on the refrigerant in the conveying cavity, and energy utilization is achieved. Preferably, the conveying member comprises a bottom plate fixedly mounted at the bottom of the shell barrel, a collecting frame is fixedly connected to the base, the bottom plate and the collecting frame are all in a ring shape, a volute is fixedly connected between the base and the bottom of the inner barrel, the bottom of the inner barrel is communicated with the input end of the volute, the bottom of the conveying cavity is communicated with the output end of the volute, the upper side and the lower side of the bottom plate are respectively attached to the su