A high-efficiency energy-saving system for low-pressure steam of a dry section drying cylinder group

Abstract

The present application belongs to the field of drying cylinder, especially a kind of high-efficiency energy-saving system of low-pressure steam of drying section drying cylinder, in view of the existing paper machine drying cylinder in use process, it is inconvenient to make steam uniform distribution, and it is inconvenient to recycle condensate, so as to avoid the waste of a large amount of steam, make production energy consumption increase, the present application proposes the following scheme, it includes bottom plate, the top of the bottom plate is fixedly installed with two symmetrical fixed plates, first through hole is formed in two fixed plates, first rotating shaft is rotatably installed in two first through holes, one end of two first rotating shafts is fixedly connected with the same drying cylinder, water tank is fixedly installed on the top of the bottom plate, water inlet is formed in the top of the water tank, the present application can be used in the process, it is convenient to make steam uniform distribution, and it is convenient to recycle condensate, so as to effectively avoid the waste of a large amount of steam, reduce production energy consumption, simple structure, convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of drying cylinders, and in particular to a high-efficiency energy-saving system for low-pressure steam of a drying cylinder group in a drying section. Background Art

[0002] A drying cylinder is a hollow, cast iron cylinder with caps at both ends. It consists of a cylinder body and two caps, with an outer diameter typically ranging from 1000 to 3000 mm. During operation, steam flows through it to dry and polish the paper being transported. Cast iron drying cylinders for papermaking machines are key components for paper drying. Manufacturing quality requires no penetration or excessive pinholes. To enhance the smoothness of the paper surface, the outer surface of the dryer is polished and the inner surface is lathed. The thickness of the entire dryer wall is maintained to ensure safety, balance, and uniform heat transfer throughout the dryer. The dryer's function is to remove moisture from the paper and finish the surface.

[0003] In the existing technology, it is not easy to evenly distribute the steam during use in the drying cylinder of the paper machine, and it is not easy to recycle the condensed water, which leads to the unavoidable waste of a large amount of steam and increases the production energy consumption. For this reason, we propose a high-efficiency and energy-saving system for low-pressure steam in the drying cylinder group of the drying section to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art in that it is difficult to evenly distribute the steam during use in the drying cylinder of a paper machine, and it is difficult to recycle the condensed water, thereby resulting in a large amount of steam being wasted and increasing production energy consumption. A high-efficiency and energy-saving system for low-pressure steam in the drying cylinder group of the drying section is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-efficiency and energy-saving system for low-pressure steam of a drying cylinder group in a drying section comprises a base plate, two symmetrical fixed plates are fixedly installed on the top of the base plate, a first through hole is provided on each of the two fixed plates, a first rotating shaft is rotatably installed in each of the two first through holes, one end of the two first rotating shafts is fixedly connected to the same drying cylinder, a water tank is fixedly installed on the top of the base plate, a water inlet is provided on the top of the water tank, a heating plate is fixedly installed on the bottom inner wall of the water tank, a U-shaped bracket is fixedly installed on one side of the fixed plate, a mounting hole is provided at one end of the two first rotating shafts, a water extraction pipe and a steam outlet pipe are movably installed in the two mounting holes, the steam outlet pipe is rotatably installed on the U-shaped bracket, a plurality of nozzles are fixedly connected to the outer side of the steam outlet pipe, a swinging mechanism is provided on the steam outlet pipe, bearings are fixedly installed on one side of the two fixed plates, and the inner rings of the two bearings are fixedly connected to the outer sides of the two first rotating shafts.

[0007] Preferably, an air pump is fixedly installed on one side of the fixed plate, and a first connecting pipe and a second connecting pipe are fixedly connected to the air pump. The first connecting pipe is connected to the water tank, and one end of the second connecting pipe is fixedly connected to an elbow, and the steam outlet pipe is rotatably installed in the elbow.

[0008] Preferably, a driving pulley is fixedly mounted on the other end of the second rotating shaft, a driven pulley is fixedly mounted on the outer side of the first rotating shaft, and the driving pulley and the driven pulley are connected to each other via a same belt.

[0009] Preferably, a fourth through hole is opened on the top of the water tank, a second rotating rod is rotatably installed in the fourth through hole, and two symmetrical stirring blades are fixedly connected to the outer side of the second rotating rod.

[0010] Preferably, the swing mechanism includes a connecting rod, which is fixedly mounted on the outside of the steam outlet pipe. A sliding opening is provided on the connecting rod. A transmission column is fixedly mounted on one side of the turntable, and the transmission column is slidably mounted in the sliding opening.

[0011] Preferably, two symmetrical connecting columns are fixedly installed on the outer side of the steam outlet pipe, and a slide groove is provided on the outer side of the two connecting columns. Guide columns are slidably installed in the two slide grooves, one end of the two guide columns is fixedly connected to the same scraper, and the other end of the two guide columns is fixedly connected to a compression spring, and one end of the two compression springs is fixedly connected to the inner wall of the two slide grooves respectively.

[0012] Preferably, a first bevel gear is fixedly mounted on one end of the first rotating rod, a second bevel gear is fixedly mounted on one end of the second rotating rod, the second bevel gear is meshed with the first bevel gear, and a turntable is fixedly mounted on the other end of the first rotating rod.

[0013] Preferably, the fixing plate is provided with a third through hole, a first rotating rod is rotatably mounted in the third through hole, a driven sprocket is fixedly mounted on the outer side of the first rotating rod, and the driven sprocket and the driving sprocket are engaged with the same chain.

[0014] Preferably, a second through hole is opened on the fixed plate, a second rotating shaft is rotatably installed in the second through hole, a motor is fixedly installed on one side of the fixed plate, the output shaft of the motor is fixedly connected to one end of the second rotating shaft, and a driving sprocket is fixedly installed on the outer side of the second rotating shaft.

[0015] Preferably, a water pump is fixedly installed on one side of the fixed plate, one end of the water pump pipe is fixedly connected to the input port of the water pump, and the same drain pipe is fixedly installed on the fixed plate and the water tank, one end of the drain pipe is fixedly connected to the output port of the water pump.

[0016] In the present invention, the high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section has the following beneficial effects:

[0017] 1. In this solution, when the motor is turned on, the motor drives the second rotating shaft to rotate, the second rotating shaft drives the driving pulley to rotate, the driving pulley drives the driven pulley to rotate through the synchronous belt, the driven pulley drives the first rotating shaft to rotate, and the first rotating shaft drives the drying cylinder to rotate. Through the arrangement of the drying cylinder and the scraper, the scraper can prevent condensed water from adhering to the inner wall of the drying cylinder.

[0018] 2. In this solution, when the second rotating shaft rotates, the second rotating shaft drives the driving sprocket to rotate, the driving sprocket drives the driven sprocket to rotate through the chain, the first rotating rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second rotating rod drives the two stirring blades to rotate, and then the two stirring blades stir and mix the condensed water to achieve the purpose of recycling.

[0019] 3. In this solution, when the first rotating rod rotates, the first rotating rod drives the turntable to rotate, the turntable drives the transmission column to make a circular motion, the transmission column drives the connecting rod to make a reciprocating circular motion, and then the connecting rod drives the steam outlet pipe and multiple nozzles to rotate back and forth, so that the steam can be evenly distributed.

[0020] The present invention can facilitate uniform distribution of steam during use and facilitates the recycling of condensed water, thereby effectively avoiding the waste of a large amount of steam and reducing production energy consumption. It has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of a high-efficiency energy-saving system for low-pressure steam in a drying cylinder group of a drying section proposed by the present invention;

[0022] Figure 2 This invention proposes a high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section Figure 1 A schematic diagram of the structure of the enlarged part A;

[0023] Figure 3 This invention proposes a high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section Figure 1 A schematic diagram of the structure of the enlarged portion B;

[0024] Figure 4 This invention proposes a high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section Figure 1 The enlarged structural diagram of part C in the middle;

[0025] Figure 5 This invention proposes a high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section Figure 1 Schematic diagram of the structure with the D part enlarged.

[0026] Figure: 1, bottom plate; 2, fixed plate; 3, first rotating shaft; 4, drying cylinder; 5, water tank; 6, water inlet; 7, heating plate; 8, water pump; 9, drain pipe; 10, water pump; 11, air pump; 12, first connecting pipe; 13, second connecting pipe; 14, elbow; 15, U-shaped bracket; 16, steam outlet pipe; 17, nozzle; 18, connecting column; 19, chute; 20, guide column; 21, compression spring Spring; 22. Scraper; 23. Motor; 24. Second rotating shaft; 25. Driving pulley; 26. Belt; 27. Driven pulley; 28. Driving sprocket; 29. ​​Chain; 30. Driven sprocket; 31. First rotating rod; 32. Turntable; 33. Connecting rod; 34. Slide; 35. Transmission column; 36. First bevel gear; 37. Second bevel gear; 38. Second rotating rod; 39. Agitator blade; 40. Bearing. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1

[0029] Reference Figure 1A high-efficiency energy-saving system for low-pressure steam of a drying cylinder group in a drying section comprises a bottom plate 1, two symmetrical fixed plates 2 are fixedly mounted on the top of the bottom plate 1, both fixed plates 2 are provided with a first through hole, both first through holes are rotatably mounted with a first rotating shaft 3, one end of the two first rotating shafts 3 is fixedly connected to the same drying cylinder 4, a water tank 5 is fixedly mounted on the top of the bottom plate 1, a water inlet 6 is provided on the top of the water tank 5, a heating plate 7 is fixedly mounted on the bottom inner wall of the water tank 5, and a U-shaped support is fixedly mounted on one side of the fixed plate 2. The bracket 15 is provided with a mounting hole at one end of each of the two first rotating shafts 3. A water extraction pipe 10 and a steam outlet pipe 16 are movably mounted in the two mounting holes. The steam outlet pipe 16 is rotatably mounted on the U-shaped bracket 15. A plurality of nozzles 17 are fixedly connected to the outside of the steam outlet pipe 16. A swing mechanism is provided on the steam outlet pipe 16. A bearing 40 is fixedly mounted on one side of each of the two fixed plates 2. The inner rings of the two bearings 40 are fixedly connected to the outsides of the two first rotating shafts 3. An air pump 11 is fixedly mounted on one side of the fixed plate 2. The air pump 1 1 is fixedly connected with a first connecting pipe 12 and a second connecting pipe 13, the first connecting pipe 12 is connected to the water tank 5, one end of the second connecting pipe 13 is fixedly connected with an elbow 14, and the steam outlet pipe 16 is rotatably installed in the elbow 14. A fourth through hole is opened on the top of the water tank 5, and a second rotating rod 38 is rotatably installed in the fourth through hole. The outer side of the second rotating rod 38 is fixedly connected to two symmetrical stirring blades 39. One end of the first rotating rod 31 is fixedly installed with a first bevel gear 36, and one end of the second rotating rod 38 is fixedly installed with a second bevel gear Gear 37, the second bevel gear 37 is meshed with the first bevel gear 36, the other end of the first rotating rod 31 is fixedly installed with a turntable 32, a water pump 8 is fixedly installed on one side of the fixed plate 2, one end of the water pump 10 is fixedly connected to the input port of the water pump 8, the fixed plate 2 and the water tank 5 are fixedly installed with the same drain pipe 9, one end of the drain pipe 9 is fixedly connected to the output port of the water pump 8, when the water pump 8 is turned on, the water pump 8 can pump the condensed water in the drying cylinder 4 into the water tank 5 through the water pump pipe 10 and the drain pipe 9.

[0030] Reference Figure 3 Two symmetrical connecting columns 18 are fixedly installed on the outside of the steam outlet pipe 16. A slide groove 19 is provided on the outside of the two connecting columns 18. Guide columns 20 are slidably installed in the two slide grooves 19. One end of the two guide columns 20 is fixedly connected to the same scraper 22, and the other end of the two guide columns 20 is fixedly connected to a compression spring 21. One end of the two compression springs 21 is fixedly connected to the inner wall of the two slide grooves 19 respectively. Through the arrangement of the two compression springs 21, the two compression springs 21 can respectively exert force on the two connecting columns 18.

[0031] Reference Figure 2 and Figure 4A second through hole is provided on the fixed plate 2, and a second rotating shaft 24 is rotatably installed in the second through hole. A motor 23 is fixedly installed on one side of the fixed plate 2, and the output shaft of the motor 23 is fixedly connected to one end of the second rotating shaft 24. A driving sprocket 28 is fixedly installed on the outer side of the second rotating shaft 24, and a driving pulley 25 is fixedly installed on the other end of the second rotating shaft 24. A driven pulley 27 is fixedly installed on the outer side of the first rotating shaft 3, and the driving pulley 25 and the driven pulley 27 are connected to the same belt 26 for transmission. A third through hole is provided on the fixed plate 2, and a first rotating rod 31 is rotatably installed in the third through hole. A driven sprocket 30 is fixedly installed on the outer side of the first rotating rod 31, and the driven sprocket 30 is meshed with the same chain 29 on the driving sprocket 28. When the second rotating shaft 24 rotates, the driving sprocket 28 can drive the driven sprocket 30 to rotate through the chain 29.

[0032] Reference Figure 5 The swing mechanism includes a connecting rod 33, which is fixedly mounted on the outside of the steam outlet pipe 16. A sliding opening 34 is provided on the connecting rod 33. A transmission column 35 is fixedly mounted on one side of the turntable 32. The transmission column 35 is slidably mounted in the sliding opening 34. When the turntable 32 rotates, the turntable 32 can drive the transmission column 35 to perform a circular motion.

[0033] In this embodiment, when in use, the heating plate 7 is started, and the heating plate 7 can heat the water in the water tank 5, and then the vacuum pump 11 is turned on, and the vacuum pump 11 transmits the steam generated by the heating to the multiple nozzles 17 through the first connecting pipe 12, the second connecting pipe 13, the elbow 14 and the steam outlet pipe 16, and then the multiple nozzles 17 can spray steam to heat the drying cylinder 4, and then the motor 23 is turned on, the motor 23 drives the second rotating shaft 24 to rotate, the second rotating shaft 24 drives the driving pulley 25 to rotate, the driving pulley 25 drives the driven pulley 27 to rotate through the belt 26, the driven pulley 27 drives the first rotating shaft 3 to rotate, and the first rotating shaft 3 drives the drying cylinder 4 to rotate. The scraper 22 is arranged to contact the inner wall of the drying cylinder 4, and the scraper 22 can scrape off the condensed water adhering to the inner wall of the drying cylinder 4. At the same time, the second rotating shaft 24 drives the driving sprocket 28 to rotate, and the driving sprocket 28 drives the driven sprocket 30 to rotate through the chain 29, and the driven sprocket 30 drives the first rotating rod 31 to rotate, and the first rotating rod 31 drives the turntable 32 to rotate, and the turntable 32 drives the transmission column 35 to perform a circular motion, and the transmission column 35 drives the connecting rod 33 to perform a reciprocating circular arc motion, and the connecting rod 33 drives the steam outlet pipe 16 and the multiple nozzles 17 to rotate back and forth, so that the steam can be evenly distributed, and then the water pump 8 is turned on. The water pump 8 can pump the condensed water in the drying cylinder 4 into the water tank 5 for recycling through the water pump pipe 10 and the drain pipe 9, and the first rotating rod 31 drives the first bevel gear 36 to rotate, and the first bevel gear 36 drives the second bevel gear 37 to rotate, and the second bevel gear 37 drives the second rotating rod 38 to rotate, and the second rotating rod 38 drives two stirring blades 39 to rotate. The two stirring blades 39 can stir the water in the water tank 5 so that it is evenly heated.

[0034] Example 2

[0035] The difference between this embodiment and the first embodiment is that a liquid level gauge is fixedly installed in the water tank 5, and a controller and a warning light are fixedly installed on one side of the fixed plate 2. The liquid level gauge, the controller and the warning light are connected in sequence. The liquid level gauge can detect the water level in the water tank 5. When the water level in the water tank 5 drops to a set threshold, the liquid level gauge sends an instruction to the controller, and the controller controls the warning light to light up, thereby reminding the staff to add water in time.

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-efficiency energy-saving system for low-pressure steam in a drying cylinder group of a drying section, comprising a bottom plate (1), characterized in that: Two symmetrical fixing plates (2) are fixedly mounted on the top of the bottom plate (1), and a first through hole is provided on each of the two fixing plates (2). A first rotating shaft (3) is rotatably mounted in each of the two first through holes. One end of the two first rotating shafts (3) is fixedly connected to the same drying cylinder (4). A water tank (5) is fixedly mounted on the top of the bottom plate (1), and a water inlet (6) is provided on the top of the water tank (5). A heating plate (7) is fixedly mounted on the inner wall of the bottom of the water tank (5). A U-shaped bracket ( 15), one end of each of the two first rotating shafts (3) is provided with a mounting hole, a water extraction pipe (10) and a steam outlet pipe (16) are movably mounted in the two mounting holes, the steam outlet pipe (16) is rotatably mounted on the U-shaped bracket (15), the outer side of the steam outlet pipe (16) is fixedly connected to a plurality of nozzles (17), and a swing mechanism is provided on the steam outlet pipe (16), one side of each of the two fixed plates (2) is fixedly mounted with a bearing (40), and the inner rings of the two bearings (40) are fixedly connected to the outer sides of the two first rotating shafts (3); A second through hole is provided on the fixing plate (2), a second rotating shaft (24) is rotatably mounted in the second through hole, a motor (23) is fixedly mounted on one side of the fixing plate (2), an output shaft of the motor (23) is fixedly connected to one end of the second rotating shaft (24), and a driving sprocket (28) is fixedly mounted on the outer side of the second rotating shaft (24); A driving pulley (25) is fixedly mounted on the other end of the second rotating shaft (24), a driven pulley (27) is fixedly mounted on the outer side of the first rotating shaft (3), and the driving pulley (25) and the driven pulley (27) are connected to each other via a same belt (26); The fixing plate (2) is provided with a third through hole, a first rotating rod (31) is rotatably mounted in the third through hole, a driven sprocket (30) is fixedly mounted on the outer side of the first rotating rod (31), and the driven sprocket (30) and the driving sprocket (28) are meshed with a same chain (29); A fourth through hole is provided on the top of the water tank (5), a second rotating rod (38) is rotatably mounted in the fourth through hole, and two symmetrical stirring blades (39) are fixedly connected to the outer side of the second rotating rod (38); A first bevel gear (36) is fixedly mounted on one end of the first rotating rod (31), a second bevel gear (37) is fixedly mounted on one end of the second rotating rod (38), the second bevel gear (37) is meshed with the first bevel gear (36), and a rotating disk (32) is fixedly mounted on the other end of the first rotating rod (31); The swing mechanism includes a connecting rod (33), the connecting rod (33) is fixedly mounted on the outside of the steam outlet pipe (16), a sliding opening (34) is provided on the connecting rod (33), a transmission column (35) is fixedly mounted on one side of the turntable (32), and the transmission column (35) is slidably mounted in the sliding opening (34); The outer sides of the two connecting columns (18) are provided with a slide groove (19), and the two slide grooves (19) are both slidably installed with a guide column (20), one end of the two guide columns (20) is fixedly connected to the same scraper (22), and the other end of the two guide columns (20) is fixedly connected to a compression spring (21), and one end of the two compression springs (21) is respectively fixedly connected to the inner wall of the two slide grooves (19).

2. The high-efficiency energy-saving system for low-pressure steam in the drying cylinder group of the drying section according to claim 1, characterized in that: A water pump (8) is fixedly mounted on one side of the fixed plate (2), one end of a water pumping pipe (10) is fixedly connected to the input port of the water pump (8), and a drain pipe (9) is fixedly mounted on the fixed plate (2) and the water tank (5), one end of the drain pipe (9) is fixedly connected to the output port of the water pump (8).

3. The high-efficiency energy-saving system for low-pressure steam of the drying cylinder group in the drying section according to claim 2, characterized in that: An air extraction pump (11) is fixedly mounted on one side of the fixed plate (2); a first connecting pipe (12) and a second connecting pipe (13) are fixedly connected to the air extraction pump (11); the first connecting pipe (12) is connected to the water tank (5); one end of the second connecting pipe (13) is fixedly connected to an elbow (14); and a steam outlet pipe (16) is rotatably mounted in the elbow (14).

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