CN113018889B

CN113018889B - Heat exchange device for reflux of middle section of pressure reduction tower

Info

Publication number: CN113018889B
Application number: CN202110587923.1A
Authority: CN
Inventors: 曹辉; 齐世森; 李珍光; 赵培和; 马玉龙
Original assignee: Dongying Lianhe Petrochemical Co ltd
Current assignee: Dongying Lianhe Petrochemical Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-07-30
Anticipated expiration: 2041-05-28
Also published as: CN113018889A

Abstract

The invention relates to a heat exchange device for reflux of a middle section of a pressure reducing tower, which belongs to the field of heat exchange equipment of the pressure reducing tower and comprises a box body, wherein the top surface of the box body is fixedly connected with liquid outlet ends of two tower outlet pipes and communicated with each other, a partition plate is fixedly arranged in the box body, the top surface of the partition plate is provided with a transverse arc-shaped groove, a spiral rod is arranged in the arc-shaped groove and is in sliding fit with the spiral rod, one end of the spiral rod is rotatably connected with the inner wall of the box body, the bottom of the arc-shaped groove is provided with a plurality of vertical through holes, the outer wall of one side of the box body is fixedly provided with a driving motor, an output shaft of the driving motor penetrates through the box body and is rotatably connected with the box body, a first transmission device is arranged between the periphery of the output shaft of the driving motor and the spiral rod, a plurality of barrel bodies with openings on the top surfaces and the bottom surfaces are arranged in the box body, the heat exchange device for reflux of the middle section of the pressure reducing tower is a heat exchange device for reflux of the pressure reducing tower, compared with the prior device, the function of removing colloid and slag powder in middle section oil, the quality of the product is improved, and the pipeline can be effectively prevented from being blocked by the colloid and the slag powder.

Description

Heat exchange device for reflux of middle section of pressure reduction tower

Technical Field

The invention belongs to the field of heat exchange equipment of a decompression tower, and particularly relates to a heat exchange device for reflux of a middle section of the decompression tower.

Background

In the conventional vacuum tower, a second-ordinary-outlet tower pipe and a second-ordinary-return tower pipe are arranged on a tower tray, so that the middle-section oil in the second-ordinary-return tower pipe is pumped out by the second-ordinary-outlet tower pipe after returning to the tower, a back mixing phenomenon is formed, and the rectification effect of the second-ordinary line is influenced. The normal line is low in extraction temperature, so that the product quality qualified rate is low, the heat recovery of the pressure reduction tower is greatly influenced, and colloid and slag powder in the middle-section oil are easily attached to the inner wall of the pipeline, so that the pipeline is blocked.

Disclosure of Invention

The invention provides a heat exchange device for reflux of a middle section of a decompression tower, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a heat exchange device for reflux of the middle section of a decompression tower comprises a box body, wherein the top surface of the box body is fixedly connected with the liquid outlet ends of two tower outlet pipes and communicated with each other, a partition plate is fixedly arranged in the box body, the top surface of the partition plate is provided with a transverse arc-shaped groove, a screw rod is arranged in the arc-shaped groove and is in sliding fit with the arc-shaped groove, one end of the screw rod is rotatably connected with the inner wall of the box body, the bottom of the arc-shaped groove is provided with a plurality of vertical through holes, the outer wall of one side of the box body is fixedly provided with a driving motor, the output shaft of the driving motor penetrates through the box body and is rotatably connected with the box body, a first transmission device is arranged between the periphery of the output shaft of the driving motor and the screw rod, a plurality of barrel bodies with openings on the top surface and the bottom surface are arranged in the box body, the barrel bodies penetrate through the partition plate and are fixedly connected with the partition plate, helical blades in sliding fit with the barrel bodies, the helical blades are respectively and are fixedly arranged at the periphery of vertical connecting pipes, and a first multi-way pipe and a second multi-way pipe are arranged in the box body, the first multi-way pipe and the second multi-way pipe are both composed of a main liquid pipe and a plurality of liquid dividing pipes, the end parts of the liquid dividing pipes of the first multi-way pipe and the second multi-way pipe are respectively connected with one end of a corresponding connecting pipe in a rotating way, the main liquid pipe of the first multi-way pipe penetrates through the top surface of the box body and is fixedly connected with the top surface, the main liquid pipe of the second multi-way pipe penetrates through the bottom surface of the box body and is fixedly connected with the bottom surface, a second transmission device is arranged between the periphery of the driving motor and the connecting pipes, fixing rings are respectively and rotatably arranged on the periphery of the barrel body, the bottom surfaces of the fixing rings are respectively and fixedly connected with the peripheries of the corresponding connecting pipes, the top surfaces of the fixing rings are respectively and fixedly connected with the lower ends of the sleeves, a sliding sleeve is respectively arranged on the periphery of each sleeve, a thread structure is arranged between one sleeve and the corresponding sliding sleeve, a first spring rod is respectively and fixedly arranged on the top surface and the bottom surface corresponding to one sleeve, and a top plate is arranged below the partition plate, the periphery of the sliding sleeve is fixedly connected with the top plate, a plurality of second spring rods are embedded in the top surface of the top plate, ejector rods are fixedly mounted at the upper ends of the second spring rods respectively, two transmission rollers are rotatably mounted above the spiral rods and connected through chain belts, a plurality of cleaning blocks are fixedly mounted on the periphery of the chain belts and can be inserted into thread gaps of the spiral rods, one end of the impurity removal pipe is fixedly connected with the other side of the box body, a vertical stop door is arranged in the box body and can block one end of the impurity removal pipe, the top surface of the stop door is connected with the top surface of the box body through a third spring rod, a vertical rack is arranged on one side of the stop door, a third gear which rotates coaxially with the transmission roller is arranged at the front end of one transmission roller, the third gear is meshed with the rack, the bottom surface of the rack is fixedly connected with a movable end of a fourth spring rod, the fourth spring rod is arranged on one side of the stop door, one side of the box body is fixedly connected with one end of a first liquid outlet pipe with a stop valve, a second liquid outlet pipe is arranged above the first liquid outlet pipe, one end of the second liquid outlet pipe is fixedly connected with one side of the box body, the other end of the second liquid outlet pipe is fixedly connected and communicated with the first liquid outlet pipe, and the other end of the first liquid outlet pipe is fixedly connected with the liquid inlet end of the first liquid outlet pipe.

The heat exchange device for reflux of the middle section of the decompression tower comprises a first transmission device and a second transmission device, wherein the first transmission device is composed of a first gear and a second gear, the first gear is fixedly arranged on the output periphery of the driving motor, the second gear is arranged at one end of the screw rod and rotates coaxially with the screw rod, and the second gear is meshed with the first gear.

The heat exchange device for the reflux of the middle section of the decompression tower comprises a first transmission device, a vertical rotating shaft, a second bevel gear, a driving wheel, a plurality of driven wheels and a transmission belt, wherein the first bevel gear is fixedly arranged on an output shaft of a driving motor, the upper end of the rotating shaft is rotatably connected with the top surface of the inner wall of a box body, the second bevel gear is fixedly arranged at the lower end of the rotating shaft and meshed with the first bevel gear, the driving wheel is fixedly arranged at the periphery of the rotating shaft, the driven wheels are respectively and fixedly arranged at the periphery of corresponding connecting pipes, and the driving wheel and the plurality of driven wheels are connected through the transmission belt.

According to the heat exchange device for the reflux of the middle section of the decompression tower, the driving wheel and the driven wheel are chain wheels, and the transmission belt is a transmission chain.

The heat exchange device for reflux at the middle section of the decompression tower is characterized in that one side of the baffle door is fixedly provided with an inclined scraper.

According to the heat exchange device for the reflux of the middle section of the decompression tower, the driving motor is a servo motor, and the driving motor is connected with the controller through a circuit.

The invention has the advantages that: the device is a heat exchange device for reflux of the middle section of a decompression tower, a user adds middle section oil into the device along two normal tower outlet pipes, the middle section oil flows into the bottom of a box body along a clapboard and a through hole, the user introduces cooling liquid into a main liquid pipe of a first multi-way pipe, the cooling liquid can flow through a plurality of connecting pipes and is finally discharged by a main liquid pipe of a second multi-way pipe, meanwhile, the user opens a driving motor and controls an output shaft of the driving motor to rotate in the forward direction, the middle section oil is accumulated at the bottom of the box body and does not pass through the bottom of a barrel body, the forward rotation of the output shaft of the driving motor can drive a screw rod to rotate in the forward direction through a first transmission device, the forward rotation of the output shaft of the driving motor can drive each connecting pipe to rotate in the forward direction through a second transmission device, the forward rotation of the screw rod can drive cleaning blocks positioned in screw thread intervals of the screw rod to move leftwards, the cleaning blocks move leftwards so that a chain belt moves in the clockwise direction, and then can drive two driving rollers to rotate clockwise, the driving rollers can drive a third gear to rotate clockwise, and then can drive the rack to move downwards and separate from the rack, and the fourth spring rod is compressed, meanwhile, the connecting pipe can drive the sleeve with the external thread to rotate forward through the connecting rod and the fixing ring in the forward direction, and then the sliding sleeve matched with the screw thread can move below the external thread, so that the first spring rod positioned at the bottom of the sliding sleeve is compressed, the connecting pipe can drive the corresponding helical blade to rotate forward, the helical blade can give an upward moving force to the middle-section oil in the cylinder body in the forward direction, and further the middle-section oil in the cylinder body can move upwards along the cylinder body, the middle-section oil exchanges heat with the cooling liquid in the connecting pipe, thereby realizing the cooling of the middle-section oil, and enabling the middle-section oil to repeatedly flow into the bottom of the box body through the through hole, and will mix with the middle section oil that just entered the box, after the middle section oil of the bottom of box is higher than one end of the second drain pipe, the middle section oil will enter the next process along the second drain pipe, the first drain pipe and the first pipe, the middle section oil will cause the colloid and slag powder in the middle section oil to adhere to the inner wall of the through hole through the through hole without stopping passing through the through hole, after the middle section oil stops entering the box from the second tower outlet pipe, the user closes the driving motor and opens the stop valve on the first drain pipe, and then discharges the middle section oil in the box, the user controls the driving motor to rotate in the reverse direction, and then can make the helical blade and the connecting pipe rotate in the reverse direction, the helical blade rotates in the reverse direction to make the cleaning block located in the thread space move to the right, and can make the third gear rotate counterclockwise, the third gear can pass through the rack, the fourth spring rod drives the stop gate to move upward, meanwhile, under the elastic force action of the first spring rod positioned below the sliding sleeve, the internal thread of the sliding sleeve is clamped with the external thread on the sleeve to drive the sliding sleeve to move upwards and further drive the top plate to move upwards, the top plate moves upwards and inserts the ejector rods into the corresponding through holes respectively so as to eject impurities in the through holes, the reverse rotation of the screw rod can drive the ejected impurities to move leftwards so that the impurities enter the impurity discharging pipe to be discharged, the screw rod can be contacted with the top of the ejector rod and further can downwards extrude the ejector rods, so that the second spring rod connected with the ejector rods continuously extends and retracts, further the inner walls of the through holes are continuously scraped by the ejector rods, further the impurities in the through holes are completely removed, the cleaning blocks can scrape the impurities adhered to the periphery of the screw rod, compared with the existing heat exchange device, the heat exchange device can utilize the characteristic that colloid and slag powder in middle-section oil easily cause pipe blockage, make continuous process through the through-hole of middle section oil, reduce the sediment powder of the colloid in the middle section oil, user control driving motor's output shaft turns to just can adjust this heat transfer device's mode of operation, high durability and convenient use, this heat transfer device can in time be ejecting and discharge the impurity in the through-hole, prevent that the through-hole from being blockked up, heat transfer device carries out heat transfer treatment to middle section oil and coolant liquid, make the oily temperature in middle section reduce and can separate the colloid and the sediment powder in the middle section oil, middle section oil gets into in the first pipe, compare with current device, this device has the function of getting rid of colloid and sediment powder in the middle section oil, the quality of product is improved, and can effectually prevent that colloid and sediment powder from blockking up the pipeline.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic process flow diagram of the present invention; FIG. 2 is a schematic diagram of a heat exchange device; FIG. 3 is an enlarged view of section I of FIG. 2; FIG. 4 is an enlarged view of a portion II of FIG. 2; fig. 5 is a partial enlarged view of iii of fig. 2.

Reference numerals: 1. tower body, 2, tower outlet pump, 3, product cooler, 4, product output device, 5, tower return regulating valve, 6, tower outlet pipe with second layer, 7, first pipe, 8, second pipe, 9, tower return pipe with second layer, 10, output pipe, 11, tower tray with thirtieth layer, 12, down-flow plate, 13, tower tray with nineteenth layer, 14, oil collecting tank, 15, impingement baffle, 16, box body, 17, partition board, 18, arc groove, 19, screw rod, 20, through hole, 21, driving motor, 22, first gear, 23, second gear, 24, cylinder body, 25, connecting pipe, 26, first bevel gear, 27, rotating shaft, 28, second bevel gear, 29, driving wheel, 30, driven wheel, 31, fixing ring, 32, sleeve, 33, sliding sleeve, 34, first spring rod, 35, top plate, 36, ejector rod, 37, driving roller, 38, chain belt, 39, cleaning block, 40, impurity removing pipe, 41, The device comprises a stop door 42, a rack 43, a third gear 44, a fourth spring rod 45, a first multi-way pipe 46, a second multi-way pipe 47, a first liquid outlet pipe 48, a second liquid outlet pipe 49, a scraper 50, a helical blade 51, a second spring rod 52 and a third spring rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A heat exchange device for reflux of the middle section of a decompression tower is disclosed, as shown in figures 1-5, relating to a decompression tower, a tower outlet pump 2, a product cooler 3, a product output device 4, a return tower regulating valve 5, a normal second tower outlet pipe 6, a first pipe 7, a second pipe 8, a normal second tower return pipe 9 and a product output pipe 10, wherein the arrangement mode among the components is shown in figure 1, the decompression tower comprises a tower body 1, a thirtieth layer of tower trays 11, a downcomer plate 12, a twenty-ninth layer of tower trays 13, an oil collecting tank 14 and an inclined impingement plate 15, the thirtieth layer of tower trays 11 and the twenty-ninth layer of tower trays 13 are both arranged in the tower body 1, the downcomer plate 12 is arranged on the bottom surface of the thirtieth layer of tower trays 11, the oil collecting tank 14 is arranged on the top surface of the twenty-ninth layer of tower trays 13, the oil collecting tank 14 is communicated with the liquid inlet end of the normal second tower outlet pipe 6, the impingement plate 15 is arranged on one side of the downcomer plate 12, the liquid outlet end of the normal second tower return pipe 9 is positioned above the impingement plate 15, comprises a box body 16, the top surface of the box body 16 is fixedly connected with the liquid outlet ends of two tower outlet pipes 6 and communicated with each other, a clapboard 17 is fixedly arranged in the box body 16, the top surface of the clapboard 17 is provided with a transverse arc-shaped groove 18, a screw rod 19 is arranged in the arc-shaped groove 18 and is in sliding fit with the arc-shaped groove, one end of the screw rod 19 is rotatably connected with the inner wall of the box body 16, the specific rotating connection mode is that one end of the screw rod 19 is fixedly connected with one end of a connecting shaft, the other end of the connecting shaft is connected with the inner wall of the box body 16 through a bearing, the bottom of the arc-shaped groove 18 is provided with a plurality of vertical through holes 20, the outer wall of one side of the box body 16 is fixedly provided with a driving motor 21, the output shaft of the driving motor 21 penetrates through the box body 16 and is rotatably connected with the box body, the specific rotating connection mode is that the connecting shaft is connected through a sealed bearing, a first transmission device is arranged between the periphery of the output shaft of the driving motor 21 and the screw rod 19 can be driven by the first transmission device, the box body 16 is internally provided with a plurality of barrel bodies 24 with openings on the top surface and the bottom surface, the barrel bodies 24 penetrate through the partition board 17 and are fixedly connected with the partition board 17, the top surfaces of the barrel bodies 24 are higher than the top surface of the partition board 17, the structure can prevent middle section oil above the partition board 17 from flowing down along the barrel bodies 24, the barrel bodies 24 are internally provided with a helical blade 50 in sliding fit with the barrel bodies, the helical blade 50 is respectively and fixedly arranged at the periphery of a vertical connecting pipe 25, the box body 16 is internally provided with a first multi-way pipe 45 and a second multi-way pipe 46, the first multi-way pipe 45 and the second multi-way pipe 46 are respectively composed of a main liquid pipe and a plurality of liquid distributing pipes, the specific structure is the prior common knowledge, the end parts of the liquid distributing pipes of the first multi-way pipe 45 and the second multi-way pipe 46 are respectively and rotatably connected with one end of the corresponding connecting pipe 25, the specific rotary connection mode is that the liquid distributing pipes are connected through a sealing bearing, the main liquid distributing pipe of the first multi-way pipe 45 penetrates through the top surface of the box body 16 and is fixedly connected with the top surface, the main liquid pipe of the second multi-way pipe 46 penetrates the bottom surface of the box 16 and is fixedly connected with the bottom surface, a second transmission device is arranged between the periphery of the driving motor 21 and the connecting pipes 25, the driving motor 21 can drive the connecting pipes 25 to synchronously rotate through the second transmission device, the periphery of the cylinder 24 is respectively rotatably provided with a fixing ring 31, the specific rotary connection mode is that the fixing rings are connected through bearings, the bottom surfaces of the fixing rings 31 are respectively fixedly connected with the periphery of the corresponding connecting pipes 25, the specific connection mode is that the fixing rings are connected through connecting rods, the top surfaces of the fixing rings 31 are respectively fixedly connected with the lower ends of the sleeves 32, the cylinder 24 respectively penetrates through the corresponding sleeves 32, the periphery of each sleeve 32 is respectively provided with a sliding sleeve 33, a thread structure is arranged between one sleeve 32 and the corresponding sliding sleeve 33, external threads are only arranged in the middle part of the periphery of one sleeve 32, the top surface and the bottom surface of the sliding sleeve 33 corresponding to one sleeve 32 are respectively fixedly provided with a first spring rod 34, a top plate 35 is arranged below the partition plate 17, the periphery of the sliding sleeve 33 is fixedly connected with the top plate 35, a plurality of second spring rods 51 are embedded in the top surface of the top plate 35, ejector rods 36 are fixedly arranged at the upper ends of the second spring rods 51 respectively, the ejector rods 36 can be inserted into the corresponding through holes 20 and are in sliding fit with the through holes, two driving rollers 37 are rotatably arranged above the screw rod 19, the front end and the rear end of each driving roller 37 are respectively arranged at the upper part of the mounting plate through bearings, the bottom surface of the mounting plate is fixedly connected with the top surface of the partition plate 17, the two driving rollers 37 are connected through a chain belt 38, a plurality of cleaning blocks 39 are fixedly arranged at the periphery of the chain belt 38, the cleaning blocks 39 can be inserted into thread gaps of the screw rod 19, one end of the impurity removing pipe 40 is fixedly connected with the other side of the box 16, a vertical blocking door 41 is arranged in the box 16, and the blocking door 41 can block one end of the impurity removing pipe 40, the bottom of the inner wall of the impurity discharging pipe 40 is aligned with the inner wall of the arc-shaped groove 18, the structure enables impurities to enter the impurity discharging pipe 40 from the arc-shaped groove 18, the top surface of the baffle door 41 is connected with the top surface of the box body 16 through a third spring rod 52, one side of the baffle door 41 is provided with a vertical rack 42, the front end of one driving roller 37 is provided with a third gear 43 which rotates coaxially with the driving roller, the third gear 43 is meshed with the rack 42, the bottom surface of the rack 42 is fixedly connected with the movable end of a fourth spring rod 44, the fourth spring rod 44 is arranged at one side of the baffle door 41, the thick rod side of the fourth spring rod 44 is fixedly connected with one side of the baffle door 41 through a connecting plate, the bottom of one side of the box body 16 is fixedly connected with one end of a first liquid outlet pipe 47 with a stop valve, a second liquid outlet pipe 48 is arranged above the first liquid outlet pipe 47, one end of the second liquid outlet pipe 48 is fixedly connected with one side of the box body 16, the other end of the second liquid outlet pipe 48 is fixedly connected with the first liquid outlet pipe 47 and communicated with the first liquid outlet pipe 47, the stop valve is positioned between the joint of the second liquid outlet pipe 48 and the first liquid outlet pipe 47 and one end of the first liquid outlet pipe 47, one end of the second liquid outlet pipe 48 is higher than the bottom surface of the cylinder 24 and lower than the bottom surface of the partition plate 17, and the other end of the first liquid outlet pipe 47 is fixedly connected with the liquid inlet end of the first liquid outlet pipe 7. The device is a heat exchange device for reflux of the middle section of a decompression tower, a user opens a tower outlet pump 2, the middle section oil in an oil collecting tank 14 is pumped out along a second tower outlet pipe 6 by the tower outlet pump 2 and enters the heat exchange device, the user closes a stop valve on a second liquid outlet pipe 48, the middle section oil enters a box body 16 along the second tower outlet pipe 6 under the action of the tower outlet pump 2, the middle section oil flows into the bottom of the box body 16 along a partition plate 17 and a through hole 20, the user introduces cooling liquid into a main liquid pipe of a first multi-way pipe 45, the cooling liquid flows through a plurality of connecting pipes 25 and is finally discharged from a main liquid pipe of a second multi-way pipe 46, meanwhile, the user opens a driving motor 21 and controls the output shaft of the driving motor to rotate in the forward direction, the middle section oil is accumulated at the bottom of the box body 16 and does not pass through the bottom of a barrel body 24, the forward rotation of the output shaft of the driving motor 21 can drive a spiral rod 19 to rotate in the forward direction through a first transmission device, and the forward rotation of the output shaft of the driving motor 21 can drive each connecting pipe 25 to rotate forward through the second transmission device, the forward rotation of the screw rod 19 can drive the cleaning block 39 located in the screw thread space of the screw rod 19 to move leftward, the leftward movement of the cleaning block 39 can drive the chain belt 38 to move clockwise, and further can drive the two transmission rollers 37 to rotate clockwise, the clockwise rotation of the transmission rollers 37 can drive the third gear 43 to rotate clockwise, and further can drive the rack 42 to move downward and separate from it, and the fourth spring rod 44 is compressed, meanwhile, the forward rotation of the connecting pipe 25 can drive the sleeve 32 with the external thread to rotate forward through the connecting rod and the fixing ring 31, and further can move the sliding sleeve 33 matched with the screw thread thereof to the lower part of the external thread, so that the first spring rod 34 located at the bottom of the sliding sleeve 33 is compressed, and the forward rotation of the connecting pipe 25 can drive the corresponding screw blade 50 to rotate forward, the screw blade 50 rotates forward to give upward movement force to the middle-section oil in the cylinder 24, so that the middle-section oil in the cylinder 24 moves upward along the cylinder 24, the middle-section oil exchanges heat with the cooling liquid in the connecting pipe 25 to cool the middle-section oil, the middle-section oil repeatedly flows into the bottom of the box 16 through the through hole 20 and is mixed with the middle-section oil which just enters the box 16, after the middle-section oil at the bottom of the box 16 is higher than one end of the second liquid outlet pipe 48, the middle-section oil can enter the next process along the second liquid outlet pipe 48, the first liquid outlet pipe 47 and the first pipe 7, the glue and slag powder in the middle-section oil can be adhered to the inner wall of the through hole 20 due to the ceaseless middle-section oil passing through the through hole 20, after the middle-section oil stops being added into the box 16 from the normal-second liquid outlet tower pipe 6, a user closes the driving motor 21 and opens the stop valve on the first liquid outlet pipe 47, and then the middle-section oil in the box 16 is discharged, the user controls the driving motor 21 to rotate reversely, so that the helical blade 50 and the connecting pipe 25 can rotate reversely, the helical blade 50 rotates reversely to move the cleaning block 39 in the thread space rightwards, and can rotate the third gear 43 anticlockwise, the third gear 43 can rotate anticlockwise to drive the shutter 41 to move upwards through the rack 42 and the fourth spring rod 44, meanwhile, under the elastic force of the first spring rod 34 positioned below the sliding sleeve 33, the internal thread of the sliding sleeve 33 is clamped with the external thread on the sleeve 32 to drive the sliding sleeve 33 to move upwards, so as to drive the top plate 35 to move upwards, the top plate 35 moves upwards and inserts the ejector rods 36 into the corresponding through holes 20 respectively, so as to eject the impurities in the through holes 20, the helical rod 19 rotates reversely to drive the ejected impurities to move leftwards so that the impurities enter the impurity discharging pipe 40 to be discharged, the screw rod 19 can contact with the top of the push rod 36 and further can downwards extrude the push rod 36, so that the second spring rod 51 connected with the push rod 36 can continuously stretch and retract, further the push rod 36 can continuously scrape the inner wall of the through hole 20 and further completely remove impurities in the through hole 20, the cleaning block 39 can scrape the impurities adhered to the periphery of the screw rod 19, compared with the existing heat exchange device, the heat exchange device can utilize the characteristic that the middle section oil colloid and the slag powder are easy to cause pipe blockage, so that the middle section oil continuously passes through the through hole 20 and the slag powder of the colloid in the middle section oil is reduced, a user can control the output shaft of the driving motor 21 to rotate to adjust the working mode of the heat exchange device, the heat exchange device is convenient to use, the heat exchange device can timely eject and discharge the impurities in the through hole 20 and prevent the through hole 20 from being blocked, and the heat exchange device can carry out heat exchange treatment on the middle section oil and cooling liquid, make the temperature of middle section oil reduce and can separate colloid and the slag powder in the middle section oil, middle section oil gets into in the first pipe 7, middle section oil can pass through the second pipe 8 after cooling down once more through product cooler 3, product output device 4 and output pipe 10 discharge, can also return in the tower body 1 through returning tower governing valve 5 and normal two return tower pipe 9, impingement baffle 15 can play the guide effect to the middle section oil of the tower body 1 that returns, make it flow outside oil collecting tank 14, can not mix with the middle section oil in oil collecting tank 14, compare with current device, at first, this device is provided with impingement baffle 15, can prevent the phenomenon of back mixing, secondly, the heat transfer device of this device has the function of getting rid of colloid and slag powder in the middle section oil, improve the quality of product, and can effectually prevent colloid and slag powder from blockking up the pipeline.

Specifically, as shown in fig. 2 or 3, the first transmission device according to the present embodiment is composed of a first gear 22 and a second gear 23, the first gear 22 is fixedly installed on the outer periphery of the output of the driving motor 21, the second gear 23 is disposed at one end of the screw rod 19 and rotates coaxially therewith, the second gear 23 is fixedly installed on the outer periphery of the connecting shaft, and the second gear 23 is engaged with the first gear 22. The output shaft of the driving motor 21 rotates to drive the screw rod 19 to rotate through the first gear 22 and the second gear 23, and the first transmission device is simple in structure and convenient to produce and manufacture.

Specifically, as shown in fig. 2 or 3, the second transmission device according to this embodiment is composed of a first bevel gear 26, a vertical rotating shaft 27, a second bevel gear 28, a driving wheel 29, a plurality of driven wheels 30 and a transmission belt, the first bevel gear 26 is fixedly mounted on an output shaft of the driving motor 21, an upper end of the rotating shaft 27 is rotatably connected to a top surface of an inner wall of the box 16, the second bevel gear 28 is fixedly mounted at a lower end of the rotating shaft 27, the second bevel gear 28 is engaged with the first bevel gear 26, the driving wheel 29 is fixedly mounted on an outer periphery of the rotating shaft 27, the driven wheels 30 are respectively fixedly mounted on outer peripheries of the corresponding connecting pipes 25, and the driving wheel 29 is connected to the plurality of driven wheels 30 through the transmission belt. The rotation of the driving motor 21 can drive the rotation shaft 27 to rotate through the first bevel gear 26 and the second bevel gear 28, the rotation shaft 27 rotates to drive the connecting pipes 25 to rotate in the same speed and the same direction through the driving wheel 29, the driving belt and the driven wheel 30, and the second transmission device has a simple structure and is convenient to produce and manufacture.

Further, as shown in fig. 2, the driving pulley 29 and the driven pulley 30 are both chain wheels, and the transmission belt is a transmission chain. Compared with other types of transmission modes, the stability of the chain transmission is higher, the problem that the driving wheel 29 or the driven wheel 30 slides relative to the transmission belt can be effectively avoided, and each driven wheel 30 can rotate synchronously.

Further, as shown in fig. 2 or 4, an inclined scraper 49 is fixedly installed at one side of the shutter 41, and the scraper 49 can contact the cleaning block 39. When the driving roller 37 moves anticlockwise, the cleaning blocks 39 can be sequentially contacted with the bottom corners of the left sides of the scraping plates 49, and the scraping plates 49 can scrape the cleaning blocks 39 to remove impurities on the cleaning blocks 39.

Further, as shown in fig. 2 or 3, the driving motor 21 of the present embodiment is a servo motor, and the driving motor 21 is electrically connected to the controller. Compared with other types of motors, the servo motor is more accurate in control of the rotating speed, can quickly respond after receiving signals sent by the controller, and is more convenient to use.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a heat transfer device is used in decompression tower middle section backward flow which characterized in that: comprises a box body (16), the top surface of the box body (16) is fixedly connected with the liquid outlet ends of two tower outlet pipes (6) and communicated with each other, a clapboard (17) is fixedly arranged in the box body (16), the top surface of the clapboard (17) is provided with a transverse arc-shaped groove (18), a screw rod (19) is arranged in the arc-shaped groove (18) and is in sliding fit with the screw rod, one end of the screw rod (19) is rotatably connected with the inner wall of the box body (16), the bottom of the arc-shaped groove (18) is provided with a plurality of vertical through holes (20), the outer wall of one side of the box body (16) is fixedly provided with a driving motor (21), the output shaft of the driving motor (21) penetrates through the box body (16) and is rotatably connected with the box body, a first transmission device is arranged between the periphery of the output shaft of the driving motor (21) and the screw rod (19), a plurality of cylinder bodies (24) with openings on the top surface and the bottom surface are arranged in the box body (16), the cylinder bodies (24) all penetrate through the clapboard (17) and are fixedly connected with the same, the barrel (24) is internally provided with a helical blade (50) which is in sliding fit with the barrel, the helical blade (50) is respectively and fixedly arranged at the periphery of the vertical connecting pipe (25), a first multi-way pipe (45) and a second multi-way pipe (46) are arranged in the box body (16), the first multi-way pipe (45) and the second multi-way pipe (46) are both composed of a main liquid pipe and a plurality of liquid distribution pipes, the end parts of the liquid distribution pipes of the first multi-way pipe (45) and the second multi-way pipe (46) are respectively and rotatably connected with one end of the corresponding connecting pipe (25), a user leads cooling liquid into the main liquid pipe of the first multi-way pipe (45), the cooling liquid can flow through the plurality of connecting pipes (25) and is finally discharged by the main liquid pipe of the second multi-way pipe (46), the main liquid pipe of the first multi-way pipe (45) penetrates through the top surface of the box body (16) and is fixedly connected with the box body, the main liquid pipe of the second multi-way pipe (46) penetrates through the bottom surface of the box body (16) and is fixedly connected with the box body, a second transmission device is arranged between the periphery of the driving motor (21) and the connecting pipe (25), the periphery of the barrel body (24) is respectively rotatably provided with a fixed ring (31), the bottom surface of the fixed ring (31) is respectively fixedly connected with the periphery of the corresponding connecting pipe (25), the top surface of the fixed ring (31) is respectively fixedly connected with the lower end of the sleeve (32), the periphery of the sleeve (32) is respectively provided with a sliding sleeve (33), a thread structure is arranged between one sleeve (32) and the corresponding sliding sleeve (33), the top surface and the bottom surface of the sliding sleeve (33) corresponding to one sleeve (32) are respectively fixedly provided with a first spring rod (34), a top plate (35) is arranged below the partition plate (17), the periphery of the sliding sleeve (33) is fixedly connected with the top plate (35), a plurality of second spring rods (51) are embedded in the top surface of the top plate (35), and ejector rods (36) are respectively fixedly arranged at the upper ends of the second spring rods (51), the push rods (36) can be respectively inserted into the corresponding through holes (20) and are in sliding fit with the through holes, two driving rollers (37) are rotatably installed above the screw rods (19), the two driving rollers (37) are connected through chain belts (38), a plurality of cleaning blocks (39) are fixedly installed on the periphery of the chain belts (38), the cleaning blocks (39) can be inserted into thread gaps of the screw rods (19), one end of a impurity discharging pipe (40) is fixedly connected to the other side of the box body (16), vertical baffle doors (41) are arranged in the box body (16), one ends of the impurity discharging pipe (40) can be blocked by the baffle doors (41), the top surface of the baffle doors (41) is connected with the top surface of the box body (16) through third spring rods (52), vertical racks (42) are arranged on one side of the baffle doors (41), third gears (43) which coaxially rotate with the transmission rollers are arranged at the front ends of the driving rollers (37), and the third gears (43) are meshed with the racks (42), the rack (42) moves downwards and can be separated from the third gear (43), the bottom surface of the rack (42) is fixedly connected with the movable end of a fourth spring rod (44), the fourth spring rod (44) is arranged on one side of the stop door (41), one side of a thick rod of the fourth spring rod (44) is fixedly connected with one side of the stop door (41) through a connecting plate, one end of a first liquid outlet pipe (47) with a stop valve is fixedly connected to the bottom of one side of the box body (16), a second liquid outlet pipe (48) is arranged above the first liquid outlet pipe (47), one end of the second liquid outlet pipe (48) is fixedly connected with one side of the box body (16), the other end of the second liquid outlet pipe (48) is fixedly connected and communicated with the first liquid outlet pipe (47), and the other end of the first liquid outlet pipe (47) is fixedly connected with the liquid inlet end of the first pipe (7).

2. The heat exchange device for reflux of the middle section of the vacuum tower as claimed in claim 1, wherein: the first transmission device is composed of a first gear (22) and a second gear (23), the first gear (22) is fixedly installed on the output periphery of the driving motor (21), the second gear (23) is arranged at one end of the screw rod (19) and rotates coaxially with the screw rod, and the second gear (23) is meshed with the first gear (22).

3. The heat exchange device for reflux of the middle section of the vacuum tower as claimed in claim 1, wherein: the second transmission device is composed of a first bevel gear (26), a vertical rotating shaft (27), a second bevel gear (28), a driving wheel (29), a plurality of driven wheels (30) and a transmission belt, wherein the first bevel gear (26) is fixedly installed on an output shaft of the driving motor (21), the upper end of the rotating shaft (27) is rotatably connected with the top surface of the inner wall of the box body (16), the second bevel gear (28) is fixedly installed at the lower end of the rotating shaft (27), the second bevel gear (28) is meshed with the first bevel gear (26), the driving wheel (29) is fixedly installed on the periphery of the rotating shaft (27), the driven wheels (30) are respectively and fixedly installed on the periphery of the corresponding connecting pipe (25), and the driving wheel (29) and the plurality of driven wheels (30) are connected through the transmission belt.

4. The heat exchange device for reflux of the middle section of the vacuum tower as claimed in claim 3, wherein: the driving wheel (29) and the driven wheel (30) are chain wheels, and the transmission belt is a transmission chain.

5. The heat exchange device for reflux of the middle section of the vacuum tower as claimed in claim 1, wherein: one side of the shutter (41) is fixedly provided with an inclined scraper (49), and the scraper (49) can be contacted with the cleaning block (39).

6. The heat exchange device for reflux of the middle section of the vacuum tower as claimed in claim 1, wherein: the driving motor (21) is a servo motor, and the driving motor (21) is connected with the controller through a circuit.