Fluoroplastic steel efficient heat exchanger of coal-fired boiler

Abstract

The invention relates to the technical field of heat exchangers, and discloses a coal-fired boiler fluoroplastic steel efficient heat exchanger which comprises a shell, a first cold flow pipe is fixedly connected to the upper circumferential face of the shell, a second cold flow pipe is fixedly connected to the lower circumferential face of the shell, and a support is fixedly connected to the lower circumferential face of the shell. A first sleeve shell is fixedly connected to the right side face of the shell, a first pipe box is fixedly connected to the right side face of the first sleeve shell, and a fixing plate is fixedly connected to the right side face of the first pipe box. The roller rotates to drive the rotating rod and the cleaning brush to rotate, the whole circumferential face of the cleaning brush can make contact with the inner wall of the heat exchange tube when the cleaning brush rotates, more smoke can be removed, and the cleaning effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler. Background Art

[0002] Fluoroplastic steel is a composite material that combines the properties of fluoroplastics and steel. It inherits the corrosion resistance and chemical stability of fluoroplastics, is inert to almost all chemicals and solvents, and also has the mechanical strength and rigidity of steel. Heat exchangers using fluoroplastic steel have excellent corrosion resistance and high temperature resistance, and can reduce the problems of low-grade flue gas heat generated by coal-fired boilers that cannot be effectively recovered and corrosion, dust accumulation, and short life that may be encountered during the recovery process. However, if the inner wall of the heat exchange tube of the existing tube-sheet coal-fired boiler heat exchanger is not cleaned for too long during use, smoke and dust will still adhere to the inner wall of the heat exchange tube, affecting the heat exchange efficiency.

[0003] Patent No. CN201610318395.9 discloses a heat exchanger for waste heat recovery of coal-fired boilers. The high-temperature section of the patent adopts finned tubes and staggered arrangement, which is conducive to strengthening the degree of flue gas disturbance, increasing the heat exchange area, and reducing the space occupied by the heat exchanger equipment, thereby increasing the heat transfer coefficient. The use of carbon steel can save a certain manufacturing cost, which is conducive to the promotion and use of low-temperature heat exchangers. The low-temperature section adopts light tubes, which can reduce the resistance of the heat exchanger and improve the ash accumulation of the tube bundle. The staggered arrangement can strengthen the degree of flue gas disturbance. The use of ND steel can effectively improve the low-temperature acid dew point corrosion of the tube bundle, which is conducive to recovering more low-temperature waste heat at lower temperatures as much as possible and expanding the application range of low-temperature heat exchangers. The high and low temperature sections adopt a graded water supply method, and are equipped with multiple flue gas temperature measuring points, medium temperature measuring points and medium flow measuring points, which is conducive to flexibly adjusting the water supply and water supply ratio of the high and low temperature sections, thereby effectively controlling the tube wall temperature, achieving the purpose of flexibly adjusting the exhaust gas temperature and effectively preventing low-temperature corrosion, so that the low-temperature heat exchanger can be used in It can still operate safely and efficiently in low-temperature flue gas, prolong the service life of the low-temperature heat exchanger, reduce the maintenance and replacement cost of the low-temperature heat exchanger, overcome the disadvantages of poor heat exchange performance, serious low-temperature corrosion, short service life, high manufacturing and operation cost and large application limitations caused by low-temperature flue gas heat transfer temperature and pressure and acid gas condensation in the prior art, and the finned tube structure and staggered arrangement are conducive to improving the heat exchange performance of the low-temperature heat exchanger. The low-temperature section adopts ND steel material and the high and low temperature sections adopt graded water supply method, which is conducive to improving the low-temperature corrosion problem of the tube bundle, and helps to improve the overall working stability, meet environmental protection, energy-saving requirements and ensure the safe and stable operation of the heat exchanger. The purpose of the present invention, therefore, is obviously reasonable and scientific in structure, reliable and stable in operation and energy-saving, with strong practicality and considerable market application prospects. Although the patent solves the above problems, there is still a problem that if the inner wall of the heat exchange tube is not cleaned for too long, smoke will still adhere to the inner wall of the heat exchange tube, affecting the heat exchange efficiency. Therefore, a coal-fired boiler fluoroplastic steel high-efficiency heat exchanger is proposed to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler, comprising a shell, the upper circumferential surface of the shell is fixedly connected with a cold flow tube 1, the lower circumferential surface of the shell is fixedly connected with a cold flow tube 2, the lower circumferential surface of the shell is fixedly connected with a support, the right side surface of the shell is fixedly connected with a sleeve shell 1, the right side surface of the sleeve shell 1 is fixedly connected with a pipe box 1, the right side surface of the pipe box 1 is fixedly connected with a fixed plate, the upper circumferential surface of the pipe box 1 is fixedly connected with a hot flow tube 1, the left side surface of the shell is fixedly connected with a sleeve shell 2, the left side surface of the sleeve shell 2 is fixedly connected with a pipe box 2, the lower circumferential surface of the pipe box 2 is fixedly connected with a hot flow tube 2, the inner wall of the sleeve shell 1 is fixedly connected with a tube sheet 1, and the left side of the tube sheet 1 The heat exchange tube is in contact with the surface, the inner wall of the second sleeve is fixedly connected with the tube sheet second, the inner wall of the shell is fixedly connected with the baffle plate, the right inner wall of the tube box one is rotatably connected with the output shaft, the left end of the output shaft is fixedly connected with a reciprocating screw, the left end of the output shaft is fixedly connected with a slide sleeve, the outer surface of the reciprocating screw is movably connected with a moving shaft, the circumferential surface of the moving shaft is fixedly connected with a connecting plate, the end of the connecting plate away from the moving shaft is fixedly connected with a sleeve ring, the inner surface of the sleeve ring is rotatably connected with a rotating rod, the circumferential surface of the rotating rod is fixedly connected with a cleaning brush, the circumferential surface of the rotating rod is fixedly connected with a roller, the interior of the shell is provided with a uniform heat exchange device for improving the heat exchange efficiency, and the interior of the tube box two is provided with a The smoke treatment device, the left end of the heat exchange tube and the right side surface of the tube sheet two are in contact with each other, the inner surface of the baffle and the circumferential surface of the heat exchange tube are in contact with each other, the left end of the output shaft is fixedly connected with a motor, and the outer surface of the motor and the inner surface of the fixed plate are fixedly connected, the circumferential surface of the movable shaft and the inner surface of the slide sleeve are slidably connected, the connecting plate and the inner surface of the slide sleeve are slidably connected, the circumferential surface of the cleaning brush and the inner wall of the heat exchange tube are in contact with each other, the circumferential surface of the roller and the inner wall of the heat exchange tube are in contact with each other, the high-calorie flue gas generated when the boiler is in use is discharged from the hot flow tube one into the tube box one, and then the condensed medium flows into the shell through the cold flow tube one, at this time, the cold flow tube two is closed to allow the condensed medium to remain in the shell, and the high-calorie flue gas flows from the tube box one through the tube sheet one into the heat exchange tube. The heat exchange effect is achieved by exchanging heat with the condensing medium through the heat exchange tube. The flue gas with reduced heat flows from the heat exchange tube through the tube sheet 2 into the tube box 2, and then passes through the hot flow tube 2 discharge device, the cold flow tube 2 is opened, and the condensing medium flows through the cold flow tube 2 into the cooling circulation system arranged outside, and then flows back into the shell after being cooled by the cooling circulation system. The condensing medium can more effectively exchange heat with the high-temperature flue gas when flowing in the shell, and the condensing medium is blocked by the baffle when flowing, so that it flows along the guide of the baffle, slowing down the flow speed, so that the condensing medium absorbs heat more fully, and starts the motor, the motor drives the output shaft to rotate, the output shaft drives the reciprocating screw to rotate, the reciprocating screw drives the moving shaft to move back and forth left and right, and the moving shaft drives the connecting plate and the sleeve ring to move back and forth,The collar drives the rotating rod and the cleaning brush to slide back and forth on the inner wall of the heat exchange tube, the output shaft drives the sliding groove sleeve to rotate, the sliding groove sleeve drives the connecting plate to rotate along the axis of the moving shaft through the sliding groove, the connecting plate drives the collar and the rotating rod to rotate in a circle, the rotating rod drives the cleaning brush and the roller to rotate in a circle, when the roller rotates in a circle, it contacts the inner wall of the heat exchange tube to generate friction, so that the roller rotates, and the rotation of the roller drives the rotating rod and the cleaning brush to rotate.

[0006] Preferably, the uniform heat exchange device includes a support ring 1, a transmission shaft, and a connecting piece 1, wherein the support ring 1 is fixedly connected to the left side of the tube sheet 1, the transmission shaft is fixedly connected to the left end of the reciprocating screw, and the connecting piece 1 is fixedly connected to the circumferential surface of the transmission shaft. The uniform heat exchange device also includes an eccentric shaft, a multi-axis transmission member, an eccentric rotating plate, a support ring 2, and a connecting piece 2, wherein the eccentric shaft is fixedly connected to the left end of the transmission shaft, the multi-axis transmission member is hinged on the left side of the eccentric shaft, the eccentric rotating plate is hinged on the right side of the multi-axis transmission member, the support ring 2 is fixedly connected to the right side of the tube sheet 2, the connecting piece 2 is fixedly connected to the inner wall of the heat exchange tube, the transmission shaft is fixedly connected to the left end of the slide sleeve, the connecting piece 1 is fixedly connected to the inner wall of the heat exchange tube, the right side of the eccentric shaft and the left side of the tube sheet 2 are in contact with each other, the right side of the eccentric rotating plate and the left side of the tube sheet 2 are in contact with each other, the connecting piece 2 is fixedly connected to the circumferential surface of the output shaft, and the The circumferential surface of the heat exchange tube is rotatably connected with the inner wall of the support ring 1, and the circumferential surface of the heat exchange tube is rotatably connected with the inner wall of the support ring 2. The output shaft rotates to drive the slide groove sleeve to rotate, the slide groove sleeve drives the transmission shaft to rotate, the transmission shaft drives the connecting piece 1 to rotate, and the connecting piece 1 drives the heat exchange tube to rotate in the support ring 1 and the support ring 2. The centrifugal force generated by the rotation of the heat exchange tube causes the internal flue gas and the condensing medium in contact with the surface of the heat exchange tube to rotate, and the roller reciprocates while rotating, so that it moves spirally reciprocatingly in the heat exchange tube, so that the friction force generated between the roller and the heat exchange tube when the heat exchange tube rotates can still make the roller rotate, and the rotation of the transmission shaft drives the eccentric shaft to rotate, and the eccentric shaft drives the multi-axis transmission member to rotate circumferentially along the axis center of the transmission shaft, and the circumferential rotation of the multi-axis transmission member drives multiple eccentric rotating plates to rotate respectively along the axis centers of multiple transmission shafts, and the multiple transmission shafts respectively drive multiple connecting pieces 1 to rotate, thereby causing all the heat exchange tubes inside the shell to rotate.

[0007] Preferably, the smoke dust handling device comprises a connecting ring, a threaded sleeve, a nut, and a filter screen, the connecting ring is fixedly connected to an inner wall of a heat flow pipe, the threaded sleeve is fixedly connected to one side of the connecting ring, the nut is threadedly connected to the outer surface of the threaded sleeve, and the filter screen is fixedly connected to an end of the nut away from the connecting ring, and the smoke dust handling device also comprises a connecting plate, a positioning shaft, a roller, a support plate, an absorption net barrel, and a partition, the connecting plate is fixedly connected to the left end of the eccentric shaft, the positioning shaft is fixedly connected to the left side of the connecting plate, the roller is rotatably connected to the left side of the connecting plate, the support plate is fixedly connected to the second inner wall of the pipe box, the absorption net barrel is rotatably connected to the inner surface of the support plate, the partition is fixedly connected to the inner wall of the absorption net barrel, the connecting ring is fixedly connected to the second inner wall of the heat flow pipe, the right side of the connecting plate and the left side of the multi-axis transmission member are in contact with each other, the positioning shaft and the second inner wall of the pipe box are rotatably connected, The circumferential surface of the roller and the circumferential surface of the absorption net barrel are in contact with each other, and activated carbon is placed in the absorption net barrel. When the smoke enters the pipe box one and is discharged from the pipe box two, the smoke contacts the filter net, and the large particles of impurities in the smoke are adhered to the filter net to complete the preliminary filtration. When the heat exchange is completed, the filter net is rotated, and the filter net drives the nut to rotate. The nut is removed from the threaded sleeve through the guiding effect of the thread opened on the threaded sleeve. The smoke after heat exchange flows into the pipe box two, and the tiny particles in the smoke are adsorbed by the activated carbon in the absorption net barrel. The rotation of the eccentric shaft drives the connecting plate to rotate along the axis of the positioning shaft, and the rotation of the connecting plate drives the roller to rotate. When the roller rotates, the circumferential surface contacts the circumferential surface of the absorption net barrel to generate friction, so that the absorption net barrel rotates in the support plate, thereby turning over the activated carbon inside the absorption net barrel, and at the same time, the partition separates the activated carbon in the absorption net barrel into two parts to prevent the activated carbon from accumulating in one place due to gravity.

[0008] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0009] 1. The fluoroplastic steel high-efficiency heat exchanger of the coal-fired boiler uses a sleeve to drive the rotating rod and the cleaning brush to slide back and forth on the inner wall of the heat exchange tube, thereby removing the smoke adhering to the heat exchange tube and preventing the heat exchange tube from being blocked, which leads to a decrease in heat exchange efficiency and improves the heat exchange effect. The rotation of the roller drives the rotating rod and the cleaning brush to rotate. When the cleaning brush rotates, its entire circumference can contact the inner wall of the heat exchange tube, which can remove more smoke and improve the cleaning effect.

[0010] 2. The centrifugal force generated by the rotation of the heat exchange tubes of the coal-fired boiler fluoroplastic steel high-efficiency heat exchanger causes the internal flue gas and the condensing medium in contact with the surface of the heat exchange tubes to rotate, thereby improving the contact efficiency between the flue gas and the condensing medium and the heat exchange tubes, making the contact surface more uniform, thereby improving the heat exchange efficiency. All the heat exchange tubes inside the shell rotate, so that the flue gas and the condensing medium in all parts of the shell are evenly exchanged, thereby improving the overall heat exchange efficiency of the device.

[0011] 3. In the fluoroplastic steel high-efficiency heat exchanger of the coal-fired boiler, the flue gas contacts the filter when entering the pipe box one and exiting the pipe box two. The large particles of impurities in the flue gas are adhered to the filter to complete the initial filtration, reducing the pollution of the flue gas emission to the environment. The flue gas after heat exchange flows into the pipe box two, and the tiny particles in the flue gas are adsorbed by the activated carbon in the absorption net barrel, so that the flue gas is further purified, which improves the environmental protection of the device. The rotation of the absorption net barrel causes the activated carbon inside to turn over, which increases the contact area between the activated carbon and the flue gas, thereby improving the adsorption effect. The partition separates the activated carbon in the absorption net barrel into two parts to prevent the activated carbon from accumulating in one place due to gravity, further increasing the contact area between the activated carbon and the flue gas, and further promoting the adsorption efficiency, so that the pollutant particles in the flue gas are effectively treated and the flue gas is prevented from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the present invention;

[0014] Figure 3 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the heat exchange tube of the present invention;

[0015] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of B;

[0016] Figure 5 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the uniform heat exchange device of the present invention;

[0017] Figure 6 For the present invention Figure 5 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 7 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the uniform heat exchange device of the present invention;

[0019] Figure 8 It is a schematic diagram of the front side cross-sectional three-dimensional structure of a partial structure of the uniform heat exchange device of the present invention.

[0020] In the figure: 1, shell; 11, cold flow tube 1; 12, cold flow tube 2; 13, support; 2, casing 1; 21, tube box 1; 22, fixed plate; 23, hot flow tube 1; 3, casing 2; 31, tube box 2; 32, hot flow tube 2; 4, tube sheet 1; 41, heat exchange tube; 42, tube sheet 2; 43, baffle; 5, output shaft; 51, reciprocating screw; 52, slide sleeve; 53, moving shaft; 54, connecting plate; 55, collar; 56, rotating rod; 57, cleaning Brush; 58, roller; 6, uniform heat exchange device; 61, support ring 1; 62, transmission shaft; 63, connecting piece 1; 64, eccentric shaft; 65, multi-axis transmission part; 66, eccentric rotating plate; 67, support ring 2; 68, connecting piece 2; 7, smoke treatment device; 71, connecting ring; 72, threaded sleeve; 73, nut; 74, filter screen; 75, connecting plate; 76, positioning shaft; 77, roller; 78, support plate; 79, absorption net barrel; 710, partition. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 8An embodiment of the present invention is: a fluorine plastic steel high-efficiency heat exchanger for a coal-fired boiler, comprising a shell 1, an upper circumferential surface of the shell 1 is fixedly connected with a cold flow pipe 11, a lower circumferential surface of the shell 1 is fixedly connected with a cold flow pipe 2 12, a lower circumferential surface of the shell 1 is fixedly connected with a support 13, a right side surface of the shell 1 is fixedly connected with a sleeve 2, a right side surface of the sleeve 2 is fixedly connected with a pipe box 21, a right side surface of the pipe box 21 is fixedly connected with a fixing plate 22, an upper circumferential surface of the pipe box 21 is fixedly connected with a hot flow pipe 1 23, a left side surface of the shell 1 is fixedly connected with a sleeve 2 3, a left side surface of the sleeve 2 3 is fixedly connected with a pipe box 2 31, and a The lower circumferential surface is fixedly connected with a heat flow tube 2 32, the inner wall of the casing 1 2 is fixedly connected with a tube sheet 1 4, the left side of the tube sheet 4 contacts a heat exchange tube 41, the inner wall of the casing 2 3 is fixedly connected with a tube sheet 2 42, the inner wall of the shell 1 is fixedly connected with a baffle 43, the right inner wall of the tube box 1 21 is rotatably connected with an output shaft 5, the left end of the output shaft 5 is fixedly connected with a reciprocating screw rod 51, the left end of the output shaft 5 is fixedly connected with a slide sleeve 52, the outer surface of the reciprocating screw rod 51 is movably connected with a moving shaft 53, the circumferential surface of the moving shaft 53 is fixedly connected with a connecting plate 54, and the end of the connecting plate 54 away from the moving shaft 53 is fixedly connected with a collar 55, and the collar The inner surface of 55 is rotatably connected with a rotating rod 56, and the circumferential surface of the rotating rod 56 is fixedly connected with a cleaning brush 57, and the circumferential surface of the rotating rod 56 is fixedly connected with a roller 58. The ring 55 drives the rotating rod 56 and the cleaning brush 57 to slide back and forth on the inner wall of the heat exchange tube 41, so as to remove the smoke adhering to the heat exchange tube 41, prevent the heat exchange tube 41 from being blocked and causing the heat exchange efficiency to decrease, thereby improving the heat exchange effect. The interior of the shell 1 is provided with a uniform heat exchange device 6 for improving the heat exchange efficiency, and the interior of the tube box 31 is provided with a smoke treatment device 7 for treating the smoke in the smoke. The left end of the heat exchange tube 41 is in contact with the right side surface of the tube sheet 42, and the baffle 4 3 and the circumferential surface of the heat exchange tube 41 are in contact with each other, the left end of the output shaft 5 is fixedly connected with a motor, and the outer surface of the motor is fixedly connected to the inner surface of the fixed plate 22, the circumferential surface of the movable shaft 53 and the inner surface of the slide groove sleeve 52 are slidably connected, the connecting plate 54 and the inner surface of the slide groove sleeve 52 are slidably connected, the circumferential surface of the cleaning brush 57 and the inner wall of the heat exchange tube 41 are in contact with each other, the circumferential surface of the roller 58 and the inner wall of the heat exchange tube 41 are in contact with each other, the rotation of the roller 58 drives the rotating rod 56 and the cleaning brush 57 to rotate, and when the cleaning brush 57 rotates, its entire circumferential surface can contact the inner wall of the heat exchange tube 41, so that more smoke and dust can be removed, thereby improving the cleaning effect.

[0023] Working principle: the high-calorie flue gas generated when the boiler is in use is discharged from the hot flow pipe 23 into the pipe box 21, and then the condensing medium flows into the shell 1 through the cold flow pipe 11. At this time, the cold flow pipe 12 is closed to allow the condensing medium to remain in the shell 1. The high-calorie flue gas flows from the pipe box 21 through the tube sheet 4 into the heat exchange pipe 41, and exchanges heat with the condensing medium through the heat exchange pipe 41 to achieve the heat exchange effect. The flue gas with reduced heat flows from the heat exchange pipe 41 through the tube sheet 42 into the pipe box 31, and then passes through the hot flow pipe 32 discharge device, the cold flow pipe 12 is opened, and the condensing medium flows through the cold flow pipe 12 into the cooling circulation system set externally, and then flows back into the shell 1 after being cooled by the cooling circulation system. When the condensing medium flows in the shell 1, it can more effectively exchange heat with the high-temperature flue gas, and the condensing medium is blocked by the baffle 43 when flowing, so that it flows along the guide of the baffle 43, slowing down the flow speed, so that the condensing medium absorbs heat more fully, and the motor is started, and the motor drives the output shaft 5 rotates, the output shaft 5 drives the reciprocating screw rod 51 to rotate, the reciprocating screw rod 51 drives the moving shaft 53 to move back and forth, the moving shaft 53 drives the connecting plate 54 and the collar 55 to move back and forth, the collar 55 drives the rotating rod 56 and the cleaning brush 57 to slide back and forth on the inner wall of the heat exchange tube 41, so as to remove the smoke adhering to the heat exchange tube 41, prevent the heat exchange tube 41 from being blocked and causing the heat exchange efficiency to decrease, thereby improving the heat exchange effect, the output shaft 5 drives the slide sleeve 52 to rotate, the slide sleeve 52 is driven by the slide groove The movable connecting plate 54 rotates in a circle along the axis of the movable shaft 53, and the connecting plate 54 drives the ring 55 and the rotating rod 56 to rotate in a circle. The rotating rod 56 then drives the cleaning brush 57 and the roller 58 to rotate in a circle. When the roller 58 rotates in a circle, it contacts the inner wall of the heat exchange tube 41 to generate friction, thereby causing the roller 58 to rotate. The rotation of the roller 58 drives the rotating rod 56 and the cleaning brush 57 to rotate. When the cleaning brush 57 rotates, its entire circumferential surface can contact the inner wall of the heat exchange tube 41, so that more smoke and dust can be removed, thereby improving the cleaning effect.

[0024] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the uniform heat exchange device 6 includes a support ring 61, a transmission shaft 62, and a connecting piece 63. The support ring 61 is fixedly connected to the left side of the tube sheet 4, the transmission shaft 62 is fixedly connected to the left end of the reciprocating screw rod 51, and the connecting piece 63 is fixedly connected to the circumferential surface of the transmission shaft 62. The centrifugal force generated by the rotation of the heat exchange tube 41 causes the internal flue gas and the condensing medium in contact with the surface of the heat exchange tube 41 to rotate, thereby improving the contact efficiency between the flue gas and the condensing medium and the heat exchange tube 41, making the contact surface more uniform, thereby improving the heat exchange efficiency. The uniform heat exchange device 6 also includes an eccentric shaft 64, a multi-axis transmission member 65, an eccentric rotating plate 66, a support ring 67, and a connecting piece 68. The eccentric shaft 64 is fixedly connected to the left end of the transmission shaft 62, and the multi-axis transmission member 65 is hinged at On the left side of the eccentric shaft 64, the eccentric rotating plate 66 is hinged on the right side of the multi-axis transmission member 65, the support ring 67 is fixedly connected to the right side of the tube sheet 42, the connecting member 68 is fixedly connected to the inner wall of the heat exchange tube 41, the transmission shaft 62 and the left end of the slide groove sleeve 52 are fixedly connected, the connecting member 1 63 is fixedly connected to the inner wall of the heat exchange tube 41, the right side of the eccentric shaft 64 and the left side of the tube sheet 42 are in contact with each other, the right side of the eccentric rotating plate 66 and the left side of the tube sheet 42 are in contact with each other, the connecting member 2 68 is fixedly connected to the circumferential surface of the output shaft 5, the circumferential surface of the heat exchange tube 41 is rotatably connected to the inner wall of the support ring 1 61, the circumferential surface of the heat exchange tube 41 is rotatably connected to the inner wall of the support ring 2 67, and all the heat exchange tubes 41 inside the shell 1 rotate, so that the flue gas and the condensing medium in various parts of the shell 1 are evenly exchanged, thereby improving the overall heat exchange efficiency of the device.

[0025] Working principle: The output shaft 5 rotates to drive the chute sleeve 52 to rotate, the chute sleeve 52 drives the transmission shaft 62 to rotate, the transmission shaft 62 drives the connector 1 63 to rotate, the connector 1 63 drives the heat exchange tube 41 to rotate in the support ring 1 61 and the support ring 2 67, and the centrifugal force generated by the rotation of the heat exchange tube 41 causes the internal flue gas and the condensing medium in contact with the surface of the heat exchange tube 41 to rotate, thereby improving the contact efficiency between the flue gas and the condensing medium and the heat exchange tube 41, making the contact surface more uniform, thereby improving the heat exchange efficiency, and the roller 58 reciprocates while rotating, so that it moves back and forth in a spiral in the heat exchange tube 41, thereby When the heat exchange tube 41 rotates, the friction force generated between the roller 58 and the heat exchange tube 41 can still make the roller 58 rotate on its own. The rotation of the transmission shaft 62 drives the eccentric shaft 64 to rotate, and the eccentric shaft 64 drives the multi-axis transmission member 65. The multi-axis transmission member 65 rotates circumferentially along the axis of the transmission shaft 62. The circumferential rotation of the multi-axis transmission member 65 drives multiple eccentric rotating plates 66 to rotate along the axes of multiple transmission shafts 62 respectively. The multiple transmission shafts 62 then drive the multiple connecting members 63 to rotate respectively, thereby causing all the heat exchange tubes 41 inside the shell 1 to rotate, so that the flue gas and the condensing medium in various parts of the shell 1 can be evenly exchanged, thereby improving the overall heat exchange efficiency of the device.

[0026] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, the smoke treatment device 7 includes a connecting ring 71, a threaded sleeve 72, a nut 73, and a filter screen 74. The connecting ring 71 is fixedly connected to the inner wall of the heat flow pipe 23, the threaded sleeve 72 is fixedly connected to one side of the connecting ring 71, the nut 73 is threadedly connected to the outer surface of the threaded sleeve 72, and the filter screen 74 is fixedly connected to the end of the nut 73 away from the connecting ring 71. When the smoke enters the pipe box 21 and is discharged from the pipe box 231, the smoke contacts the filter screen 74. The large particles of impurities in the flue gas are adhered to the filter screen 74, completing the preliminary filtration, reducing the pollution of the flue gas emission to the environment, and the flue gas after heat exchange flows into the pipe box 2 31, and the tiny particles in the flue gas are adsorbed by the activated carbon in the absorption net barrel 79, so that the flue gas is further purified, and the environmental protection of the device is improved. The smoke dust treatment device 7 also includes a connecting plate 75, a positioning shaft 76, a roller 77, a support plate 78, an absorption net barrel 79, and a partition 710. The connecting plate 75 is fixedly connected to the left side of the eccentric shaft 64 The end, the positioning shaft 76 is fixedly connected to the left side of the connecting plate 75, the roller 77 is rotatably connected to the left side of the connecting plate 75, the support plate 78 is fixedly connected to the inner wall of the pipe box 2 31, the absorption net barrel 79 is rotatably connected to the inner surface of the support plate 78, the partition plate 710 is fixedly connected to the inner wall of the absorption net barrel 79, the connecting ring 71 is fixedly connected to the inner wall of the heat flow pipe 2 32, the right side of the connecting plate 75 and the left side of the multi-axis transmission member 65 are in contact with each other, the positioning shaft 76 is rotatably connected to the inner wall of the pipe box 2 31, the circumferential surface of the roller 77 is connected to the absorption The circumferential surfaces of the net barrel 79 are in contact with each other. Activated carbon is placed in the absorption net barrel 79. The rotation of the absorption net barrel 79 causes the activated carbon inside to turn over, thereby increasing the contact area between the activated carbon and the flue gas, thereby improving the adsorption effect. The partition 710 separates the activated carbon in the absorption net barrel 79 into two parts, preventing the activated carbon from accumulating in one place due to gravity, further increasing the contact area between the activated carbon and the flue gas, and further promoting the adsorption efficiency, so that the pollutant particles in the flue gas can be effectively treated, and the flue gas can be prevented from polluting the environment.

[0027] Working principle: When the flue gas enters the pipe box 1 21 and is discharged from the pipe box 2 31, the flue gas contacts the filter screen 74, and the large particles of impurities in the flue gas are adhered to the filter screen 74, completing the preliminary filtration, reducing the pollution of the flue gas emission to the environment. When the heat exchange is completed, the filter screen 74 is rotated, and the filter screen 74 drives the nut 73 to rotate. The nut 73 is removed from the threaded sleeve 72 through the guiding effect of the thread opened on the threaded sleeve 72, and then the filter screen 74 can be cleaned, making the cleaning of the filter screen 74 more convenient, and improving the service life and filtering effect of the filter screen 74. The flue gas after heat exchange flows into the pipe box 2 31, and the tiny particles in the flue gas are adsorbed by the activated carbon in the absorption net barrel 79, so that the flue gas is further purified. , which improves the environmental protection of the device. The rotation of the eccentric shaft 64 drives the connecting plate 75 to rotate along the axis of the positioning shaft 76. The rotation of the connecting plate 75 drives the roller 77 to rotate. When the roller 77 rotates, the circumferential surface contacts the circumferential surface of the absorption net barrel 79 to generate friction, so that the absorption net barrel 79 rotates in the support plate 78, thereby causing the activated carbon inside the absorption net barrel 79 to turn over, thereby increasing the contact area between the activated carbon and the flue gas, thereby improving the adsorption effect. At the same time, the partition 710 separates the activated carbon in the absorption net barrel 79 into two parts, avoiding the activated carbon from accumulating in one place due to gravity, further increasing the contact area between the activated carbon and the flue gas, and promoting the adsorption efficiency again, so that the pollutant particles in the flue gas are effectively treated, and avoiding the pollution of the flue gas to the environment.

[0028] The present invention provides a fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler, comprising a shell (1), characterized in that: The upper circumferential surface of the shell (1) is fixedly connected to a cold flow tube 1 (11), the lower circumferential surface of the shell (1) is fixedly connected to a cold flow tube 2 (12), the lower circumferential surface of the shell (1) is fixedly connected to a support (13), the right side surface of the shell (1) is fixedly connected to a casing shell 1 (2), the right side surface of the casing shell 1 (2) is fixedly connected to a pipe box 1 (21), the right side surface of the pipe box 1 (21) is fixedly connected to a fixing plate (22), the upper circumferential surface of the pipe box 1 (21) is fixedly connected to a hot flow tube 1 (23), the left side surface of the shell (1) is fixedly connected to a casing shell 2 (3), the left side surface of the casing shell 2 (3) is fixedly connected to a pipe box 2 (31), the lower circumferential surface of the pipe box 2 (31) is fixedly connected to a hot flow tube 2 (32), the inner wall of the casing shell 1 (2) is fixedly connected to a tube sheet 1 (4), the left side surface of the tube sheet 1 (4) contacts A heat exchange tube (41) is provided, the inner wall of the second casing (3) is fixedly connected to the second tube sheet (42), the inner wall of the shell (1) is fixedly connected to the baffle (43), the right inner wall of the first tube box (21) is rotatably connected to the output shaft (5), the left end of the output shaft (5) is fixedly connected to a reciprocating screw (51), the left end of the output shaft (5) is fixedly connected to a slide sleeve (52), the outer surface of the reciprocating screw (51) is movably connected to a moving shaft (53), the circumferential surface of the moving shaft (53) is fixedly connected to a connecting plate (54), the end of the connecting plate (54) away from the moving shaft (53) is fixedly connected to a collar (55), the inner surface of the collar (55) is rotatably connected to a rotating rod (56), the circumferential surface of the rotating rod (56) is fixedly connected to a cleaning brush (57), and the circumferential surface of the rotating rod (56) is fixedly connected to a roller (58); A uniform heat exchange device (6) for improving heat exchange efficiency is arranged inside the shell (1), and a smoke dust treatment device (7) for treating smoke dust in the smoke is arranged inside the second pipe box (31).

2. The fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 1 is characterized by: The left end of the heat exchange tube (41) and the right side surface of the tube sheet (42) are in contact with each other, the inner surface of the baffle (43) and the circumferential surface of the heat exchange tube (41) are in contact with each other, the left end of the output shaft (5) is fixedly connected to a motor, and the outer surface of the motor and the inner surface of the fixed plate (22) are fixedly connected, the circumferential surface of the movable shaft (53) and the inner surface of the slide groove sleeve (52) are slidably connected, the connecting plate (54) and the inner surface of the slide groove sleeve (52) are slidably connected, the circumferential surface of the cleaning brush (57) and the inner wall of the heat exchange tube (41) are in contact with each other, and the circumferential surface of the roller (58) and the inner wall of the heat exchange tube (41) are in contact with each other.

3. A fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 2, characterized in that: The uniform heat exchange device (6) comprises a support ring (61), a transmission shaft (62), and a connecting piece (63); the support ring (61) is fixedly connected to the left side of the tube sheet (4); the transmission shaft (62) is fixedly connected to the left end of the reciprocating screw (51); and the connecting piece (63) is fixedly connected to the circumferential surface of the transmission shaft (62).

4. The fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 3 is characterized by: The uniform heat exchange device (6) also includes an eccentric shaft (64), a multi-axis transmission member (65), an eccentric rotating plate (66), a second support ring (67), and a second connecting member (68). The eccentric shaft (64) is fixedly connected to the left end of the transmission shaft (62), the multi-axis transmission member (65) is hinged on the left side of the eccentric shaft (64), the eccentric rotating plate (66) is hinged on the right side of the multi-axis transmission member (65), the second support ring (67) is fixedly connected to the right side of the second tube sheet (42), and the second connecting member (68) is fixedly connected to the inner wall of the heat exchange tube (41).

5. The fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 4 is characterized by: The transmission shaft (62) is fixedly connected to the left end of the slide sleeve (52), the connecting piece 1 (63) is fixedly connected to the inner wall of the heat exchange tube (41), the right side surface of the eccentric shaft (64) and the left side surface of the tube sheet 2 (42) are in contact with each other, the right side surface of the eccentric rotating plate (66) and the left side surface of the tube sheet 2 (42) are in contact with each other, the connecting piece 2 (68) is fixedly connected to the circumferential surface of the output shaft (5), the circumferential surface of the heat exchange tube (41) is rotatably connected to the inner wall of the support ring 1 (61), and the circumferential surface of the heat exchange tube (41) is rotatably connected to the inner wall of the support ring 2 (67).

6. A fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 5, characterized in that: The smoke treatment device (7) comprises a connecting ring (71), a threaded sleeve (72), a nut (73), and a filter screen (74); the connecting ring (71) is fixedly connected to the inner wall of a heat flow pipe (23); the threaded sleeve (72) is fixedly connected to one side of the connecting ring (71); the nut (73) is threadedly connected to the outer surface of the threaded sleeve (72); and the filter screen (74) is fixedly connected to one end of the nut (73) away from the connecting ring (71).

7. A fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 6, characterized in that: The smoke treatment device (7) also includes a connecting plate (75), a positioning shaft (76), a roller (77), a support plate (78), an absorption net barrel (79), and a partition (710); the connecting plate (75) is fixedly connected to the left end of the eccentric shaft (64); the positioning shaft (76) is fixedly connected to the left side of the connecting plate (75); the roller (77) is rotatably connected to the left side of the connecting plate (75); the support plate (78) is fixedly connected to the inner wall of the pipe box (31); the absorption net barrel (79) is rotatably connected to the inner surface of the support plate (78); and the partition (710) is fixedly connected to the inner wall of the absorption net barrel (79).

8. The fluoroplastic steel high-efficiency heat exchanger for a coal-fired boiler according to claim 7 is characterized by: The connecting ring (71) is fixedly connected to the inner wall of the second heat flow pipe (32), the right side surface of the connecting plate (75) and the left side surface of the multi-axis transmission member (65) are in contact with each other, the positioning shaft (76) and the inner wall of the second pipe box (31) are rotatably connected, the circumferential surface of the roller (77) and the circumferential surface of the absorption net barrel (79) are in contact with each other, and activated carbon is placed in the absorption net barrel (79).

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