Heat recovery device of industrial factory building

Abstract

The utility model discloses a heat recovery device of an industrial factory building, and relates to the field of energy-saving equipment. The heat recovery device of the industrial factory building comprises a heat recovery tower and a heat exchange pipe arranged in the heat recovery tower, the heat exchange pipe is formed by sequentially connecting a plurality of sets of vertical pipes end to end, and a scraping mechanism is arranged on the outer wall of the heat exchange pipe. According to the heat recovery device of the industrial factory building, a heat exchange pipe is arranged to be a plurality of vertical pipes which are connected end to end, bent parts at the two ends of the heat exchange pipe are wrapped by a top wrapping cover and a bottom wrapping cover, and a conical scraping plate is driven to move up and down by controlling an output shaft of a servo motor to rotate forwards and backwards and pulling a steel cable; waste scraping is carried out on the outer surfaces of the vertical parts in the middles of the multiple heat exchange pipes, and therefore the situation that when heat recovery is carried out on heat-containing waste gas, impurities in the heat-containing waste gas adhere to the outer surfaces of the heat exchange pipes, and heat exchange is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving equipment, in particular to a heat recovery device for industrial plants. Background Art

[0002] In industrial plants, various types of heat recovery devices are usually installed to recover heat from wastewater, exhaust gas and other exhaust materials to achieve the purpose of energy saving and consumption reduction. When recovering heat from exhaust gas, heat recovery towers are often used to achieve heat exchange between the heat exchange medium inside the pipe and the exhaust gas through the heat exchange tubes inside the heat recovery tower.

[0003] In order to increase the heat exchange contact surface, the current heat recovery tower usually spirals the pipes inside the recovery tower, which increases the heat recovery efficiency to a certain extent. However, the spiral heat exchange pipes are not easy to clean. As a result, during long-term use, the particles carried in the exhaust gas will adhere to the outer wall of the pipe, causing the pipe wall to thicken, hindering the heat exchange process, and the heat exchange efficiency will gradually decrease with the increase of use time. In order to solve the above problems, a heat recovery device for an industrial plant is provided. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a heat recovery device for an industrial plant, which solves the defect that the spiral heat exchange tubes inside the existing heat recovery tower are difficult to clean, which results in particles carried in the exhaust gas adhering to the outer wall of the pipe during long-term use, causing the pipe wall to thicken, hindering the heat exchange process, and the heat exchange efficiency will gradually decrease with increasing use time.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: A heat recovery device for an industrial plant, comprising a heat recovery tower and a heat exchange tube arranged inside the heat recovery tower, wherein the heat exchange tube is formed by connecting a plurality of groups of vertical tubes end to end in sequence, and a scraping mechanism is arranged on the outer wall of the heat exchange tube, wherein the scraping mechanism comprises;

[0006] A conical scraper plate is slidably disposed on the outer wall of the heat exchange tube;

[0007] A traction steel cable is arranged in the middle of the conical scraper plate, and is used to pull the conical scraper plate to move up and down;

[0008] A servo motor is installed at the bottom of the heat recovery tower, and the servo motor is used to drive the traction cable to move.

[0009] Preferably, a top covering cover and a bottom covering cover are respectively provided at the upper and lower ends of the interior of the heat recovery tower, and the two ends of the heat exchange tube are respectively placed inside the top covering cover and the bottom covering cover.

[0010] Preferably, support bars are welded to the outer walls of the top covering cover and the bottom covering cover, and the other ends of the support bars are fixedly welded to the inner wall of the heat recovery tower.

[0011] Preferably, a particle catcher is installed at the top of the heat recovery tower, and a conical collecting hopper is provided at the bottom of the heat recovery tower.

[0012] Preferably, a flip cover is installed at the bottom end of the middle part of the conical collecting bucket, and supporting legs are installed on the sides of the conical collecting bucket.

[0013] Preferably, a waste gas feed pipe is installed on one side of the heat recovery tower, and a water inlet pipe and a water outlet pipe are installed at the upper and lower ends of the other side of the heat recovery tower, respectively, and the water inlet pipe and the water outlet pipe are respectively connected to the two ends of the heat exchange tube.

[0014] Preferably, the servo motor is fixedly mounted at the bottom end of the conical collecting bucket, a threaded transmission wheel is mounted at the output end of the servo motor, a fixed pulley is mounted inside the top covering cover, and both ends of the traction cable are respectively mounted on the outer surfaces of the threaded transmission wheel and the fixed pulley.

[0015] Preferably, one side of the traction steel cable is fixedly connected to the conical scraper plate, and the other side of the traction steel cable passes through the conical scraper plate.

[0016] The utility model discloses a heat recovery device for an industrial plant, which has the following beneficial effects: by starting a servo motor, the servo motor output shaft rotates, and the threaded transmission wheel drives the traction cable to move, at this time one side of the traction cable moves upward, driving the conical scraper plate to move upward, and scraping waste from the outer surfaces of multiple heat exchange tubes, through a fixed pulley, the other side of the traction cable moves downward, and finally the traction cable drives the conical scraper plate to move to the bottom end of the top covering cover, and then the servo motor is reversed, so that the traction cable moves in the opposite direction, thereby driving the conical scraper plate to move downward, and further scraping waste from the outer surface of the heat exchange tube, thereby preventing the internal impurities of the heat-containing exhaust gas from adhering to the outer surface of the heat exchange tube when the heat is recovered, thereby affecting the heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the heat recovery tower of the utility model;

[0020] Figure 3 This is a cross-sectional view of the internal structure of the top cover and the bottom cover of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the scraping mechanism of the utility model.

[0022] In the figure: 1. heat recovery tower; 2. particle catcher; 3. exhaust gas feed pipe; 4. water inlet pipe; 5. water outlet pipe; 6. support leg; 7. scraper mechanism; 71. conical scraper plate; 72. servo motor; 73. traction cable; 74. fixed pulley; 75. threaded transmission wheel; 8. top covering cover; 9. bottom covering cover; 10. heat exchange tube; 11. conical collecting bucket; 12. flip cover; 13. support bar. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The embodiment of the present application provides a heat recovery device for an industrial plant, which solves the problem that the spiral heat exchange tubes inside the existing heat recovery tower are difficult to clean. As a result, during long-term use, particles carried in the exhaust gas will adhere to the outer wall of the pipe, causing the pipe wall to thicken, hindering the heat exchange process, and the heat exchange efficiency will gradually decrease with the increase in usage time.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The utility model embodiment discloses a heat recovery device for an industrial plant.

[0027] According to the attached Figure 1-4 As shown, it includes a heat recovery tower 1 and a heat exchange tube 10 arranged inside the heat recovery tower 1. The heat exchange tube 10 is formed by connecting multiple groups of vertical tubes end to end in sequence. The outer wall of the heat exchange tube 10 is provided with a scraper mechanism 7. The scraper mechanism 7 includes;

[0028] A conical scraper plate 71 is slidably disposed on the outer wall of the heat exchange tube 10, and the top of the conical scraper plate 71 is a conical surface, so that the scraped waste can slide down into the conical collecting bucket 11;

[0029] A traction cable 73 is disposed in the middle of the conical scraper plate 71, and is used to pull the conical scraper plate 71 to move up and down;

[0030] The servo motor 72 is installed at the bottom of the heat recovery tower 1 , and is used to drive the traction cable 73 to move.

[0031] A top covering cover 8 and a bottom covering cover 9 are respectively provided at the upper and lower ends of the interior of the heat recovery tower 1. The two ends of the heat exchange tube 10 are respectively placed inside the top covering cover 8 and the bottom covering cover 9. The tops of the top covering cover 8 and the bottom covering cover 9 are both inclined surfaces to avoid accumulation of impurities. They are mainly used to wrap the bent parts at both ends of the heat exchange tube 10 to avoid impurities adhering to the bent parts and making it inconvenient to clean.

[0032] The outer walls of the top covering cover 8 and the bottom covering cover 9 are both welded with support bars 13, and the other ends of the support bars 13 are fixedly welded to the inner wall of the heat recovery tower 1, thereby forming a gap between the heat recovery tower 1 and facilitating the flow of exhaust gas.

[0033] A particle catcher 2 is installed on the top of the heat recovery tower 1 , and a conical collecting hopper 11 is provided at the bottom of the heat recovery tower 1 .

[0034] A flip cover 12 is installed at the bottom of the middle part of the conical collecting bucket 11, and a supporting leg 6 is installed on the side of the conical collecting bucket 11. After the conical collecting bucket 11 completes waste collection, the flip cover 12 is opened to pour out the waste.

[0035] An exhaust gas feed pipe 3 is installed on one side of the heat recovery tower 1, and a water inlet pipe 4 and a water outlet pipe 5 are installed at the upper and lower ends of the other side of the heat recovery tower 1, respectively. The water inlet pipe 4 and the water outlet pipe 5 are connected to the two ends of the heat exchange tube 10 respectively.

[0036] The servo motor 72 is fixedly installed at the bottom end of the conical collecting bucket 11, and a threaded transmission wheel 75 is installed at the output end of the servo motor 72. A fixed pulley 74 is installed inside the top covering cover 8. Both ends of the traction cable 73 are respectively installed on the outer surfaces of the threaded transmission wheel 75 and the fixed pulley 74. The traction cable 73 is in a closed shape as a whole, and the bottom end is wound around the outer wall of the threaded transmission wheel 75. When the threaded transmission wheel 75 rotates, one end reels the traction cable 73, and the other end releases the traction cable 73.

[0037] One side of the traction cable 73 is fixedly connected to the conical scraper plate 71, and the other side of the traction cable 73 passes through the conical scraper plate 71. The servo motor 72 rotates forward and reversely to drive the traction cable 73 to move forward and reversely, thereby causing the conical scraper plate 71 to move up and down to clean the impurities on the outer surface of the heat exchange tube 10.

[0038] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0039] The device arranges the heat exchange tube 10 into multiple vertical tubes to connect them end to end, and uses a top covering cover 8 and a bottom covering cover 9 to wrap the bent parts at both ends of the heat exchange tube 10. By starting the servo motor 72, the output shaft of the servo motor 72 rotates, and the traction cable 73 is driven to move through the threaded transmission wheel 75. At this time, one side of the traction cable 73 moves upward, driving the conical scraper plate 71 to move upward, and scraping waste from the outer surfaces of the multiple heat exchange tubes 10. Through the fixed pulley 74, the other side of the traction cable 73 moves downward, and finally the traction cable 73 drives the conical scraper plate 71 to move to the bottom end of the top covering cover 8. Then the servo motor 72 is reversed, so that the traction cable 73 moves in the opposite direction, thereby driving the conical scraper plate 71 to move downward, and further scraping waste from the outer surface of the heat exchange tube 10, thereby preventing the internal impurities of the heat-containing exhaust gas from adhering to the outer surface of the heat exchange tube 10 during heat recovery, thereby affecting the heat exchange.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A heat recovery device for an industrial plant, comprising a heat recovery tower (1) and a heat exchange pipe (10) arranged inside the heat recovery tower (1), characterized in that: The heat exchange tube (10) is formed by connecting a plurality of groups of vertical tubes end to end in sequence. The outer wall of the heat exchange tube (10) is provided with a scraping mechanism (7), and the scraping mechanism (7) comprises: A conical scraper plate (71) slidably disposed on the outer wall of the heat exchange tube (10); A traction steel cable (73) is arranged in the middle of the conical scraper plate (71), and the traction steel cable (73) is used to pull the conical scraper plate (71) to move up and down; A servo motor (72) is installed at the bottom of the heat recovery tower (1), and the servo motor (72) is used to drive the traction cable (73) to move.

2. The heat recovery device for industrial plants according to claim 1, characterized in that: A top covering cover (8) and a bottom covering cover (9) are respectively arranged at the upper and lower ends of the interior of the heat recovery tower (1), and the two ends of the heat exchange tube (10) are respectively placed inside the top covering cover (8) and the bottom covering cover (9).

3. The heat recovery device for industrial plants according to claim 2, characterized in that: The outer walls of the top covering cover (8) and the bottom covering cover (9) are both welded with support bars (13), and the other ends of the support bars (13) are fixedly welded to the inner wall of the heat recovery tower (1).

4. The heat recovery device for industrial plants according to claim 3, characterized in that: A particle catcher (2) is installed at the top of the heat recovery tower (1), and a conical collecting hopper (11) is provided at the bottom of the heat recovery tower (1).

5. The heat recovery device for industrial plants according to claim 4, characterized in that: A flip cover (12) is installed at the bottom middle end of the conical collecting hopper (11), and a supporting leg (6) is installed on the side of the conical collecting hopper (11).

6. The heat recovery device for industrial plants according to claim 1, characterized in that: An exhaust gas feed pipe (3) is installed on one side of the heat recovery tower (1), and a water inlet pipe (4) and a water outlet pipe (5) are installed at the upper and lower ends of the other side of the heat recovery tower (1), respectively, and the water inlet pipe (4) and the water outlet pipe (5) are respectively connected to the two ends of the heat exchange pipe (10).

7. The heat recovery device for industrial plants according to claim 4, characterized in that: The servo motor (72) is fixedly mounted at the bottom end of the conical collecting bucket (11); a threaded transmission wheel (75) is mounted at the output end of the servo motor (72); a fixed pulley (74) is mounted inside the top covering cover (8); and both ends of the traction steel cable (73) are respectively mounted on the outer surfaces of the threaded transmission wheel (75) and the fixed pulley (74).

8. The heat recovery device for industrial plants according to claim 7, characterized in that: One side of the traction steel cable (73) is fixedly connected to the conical scraper plate (71), and the other side of the traction steel cable (73) passes through the conical scraper plate (71).

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