A doctor device for cleaning a dryer in papermaking

Abstract

The utility model relates to papermaking drying cylinder cleaning technical field, and disclose a kind of scraper device for cleaning drying cylinder when papermaking, including mounting seat, drying cylinder main body, collecting groove, fixed base, air pipe and air pump, the inside of fixed base is equipped with mounting groove, and the inside of mounting groove is engaged with mounting plate, and the upper end of mounting plate is fixedly connected with scraper, and the both ends of air pipe are respectively bearing connected with first connecting seat and second connecting seat.The utility model can drive fixed base to rotate by starting servo motor, so as to drive scraper to make it adhere to the outer surface of drying cylinder main body, at this time, the impurities on the outer surface of drying cylinder main body can be scraped off by scraper, and fixed base and mounting plate will not block the falling impurities, so that the impurities after scraping will fall into the inside of collecting groove, and the design can effectively collect the impurities scraped off automatically, so as to reduce the pollution caused by impurities around as far as possible.

Description

Technical Field

[0001] This utility model relates to the field of paper drying cylinder cleaning technology, and more specifically, to a scraper device for cleaning the drying cylinder during papermaking. Background Technology

[0002] The paper drying cylinder is the core equipment of the drying section of a paper machine. High-temperature steam is introduced into its interior, heating the wet paper web that is pressed against its metal surface, evaporating moisture from the paper, achieving drying and setting, and giving the paper its final strength and smoothness. The drying cylinder cleaning blades are the scraper devices that are usually pressed tightly against the surface of the drying cylinder. Their core function is to continuously scrape away the fine fibers, fillers, adhesives, and impurities that adhere to and deposit on the surface of the drying cylinder, preventing them from accumulating and thickening. This ensures that the drying cylinder surface remains clean, maintains optimal heat conduction efficiency, avoids defects such as holes, black spots, and marks on the paper, and reduces energy consumption.

[0003] Some existing scrapers cannot effectively collect various impurities (such as fine fibers, fillers, and adhesives / impurity coatings) cleaned from the surface of the drying cylinder during cleaning. These scraped impurities are easily scattered uncontrollably into the surrounding area, causing accumulation and contamination. In addition, some existing scrapers lack a cleaning structure during use, which makes it easy for the cleaned impurities to adhere to the outer surface of the scraper, requiring operators to manually clean them afterward, which will increase the workload of operators to some extent. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a scraper device for cleaning the drying cylinder during papermaking, which has the advantages of collecting impurities and automatic cleaning.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a scraper device for cleaning a drying cylinder during papermaking, comprising a mounting base, a drying cylinder body, a collection trough, a fixing base, an air duct, and an air pump. The fixing base has an installation groove inside, and an installation plate is engaged inside the installation groove. A scraper is fixedly connected to the upper end of the installation plate. The two ends of the air duct are respectively connected to a first connecting seat and a second connecting seat by bearings. An air outlet is connected inside the lower end of the air duct. A worm gear and a worm are provided inside the second connecting seat.

[0006] As a preferred embodiment of this utility model, the main bearing of the drying cylinder is connected to the interior of the mounting base, and the collection groove is fixedly connected to the lower end of one side surface of the mounting base.

[0007] As a preferred embodiment of this utility model, a servo motor is mounted on one end of one side surface of the mounting base, and a fixing plate is fixedly connected to the other end of one side surface of the mounting base. One end of the fixing base is fixedly connected to the output shaft of the servo motor, and the other end of the fixing base is connected to the inside of the fixing plate by a bearing.

[0008] As a preferred technical solution of this utility model, the internal thread of one side surface of the mounting groove is connected with a fixing bolt, and multiple sets of fixing bolts are provided, with one end of each set of fixing bolts abutting against the surface of one side of the mounting plate.

[0009] As a preferred technical solution of this utility model, a support plate is fixedly connected to the surface of the other side of the mounting plate, and the support plate is provided in multiple sets, and the upper ends of the multiple sets of support plates are fixedly connected to the scraper. The position of the scraper corresponds to the position of the drying cylinder body and the collection tank.

[0010] As a preferred technical solution of this utility model, the upper surface of the first connecting seat is internally threaded with a locking screw, and the lower end of the locking screw abuts against the outer surface of the air duct.

[0011] As a preferred embodiment of this utility model, one end of the air duct is fixedly connected to the worm gear, and the worm gear bearing is connected inside the second connecting seat. The position of the air outlet corresponds to the position of the scraper.

[0012] As a preferred embodiment of this utility model, the inner bearing on the upper surface of the second connecting seat is connected to a worm gear, and the outer surface of the worm gear meshes with the outer surface of the worm wheel. The air pump is installed at one end of the upper surface of the mounting seat, and the output end of the air pump is connected to the interior of the other end of the air duct.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model can drive the fixed base to rotate by starting the servo motor, thereby driving the scraper to fit against the outer surface of the drying cylinder body. At this time, the scraper can scrape off the impurities on the outer surface of the drying cylinder body, and the fixed base and mounting plate will not obstruct the falling impurities. Therefore, the scraped impurities will fall into the inside of the collection tank. This design can automatically and effectively collect the scraped impurities, thereby minimizing the pollution caused by impurities to the surrounding environment.

[0015] 2. This utility model uses a rotating worm gear to drive a worm wheel to rotate. When the worm wheel rotates, it drives the air duct and the air outlet to rotate synchronously. At this time, the air outlet can be aligned with the outer surface of the scraper. Rotating the locking screw can make its lower end press against the outer surface of the air duct, thus preventing the air duct from rotating. Starting the air pump can input airflow into the air duct and then spray it out through the air outlet. At this time, the sprayed airflow can impact the dust attached to the outer surface of the scraper, thereby cleaning the impurities on the outer surface of the automatic scraper. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial explosion diagram of the present invention;

[0018] Figure 3 This is a partial schematic diagram of the present invention;

[0019] Figure 4 This is a partial cross-sectional schematic diagram of the present invention;

[0020] Figure 5 This is a partial cross-sectional schematic diagram of the present invention.

[0021] In the diagram: 1. Mounting base; 2. Drying cylinder body; 3. Collection tank; 4. Servo motor; 5. Fixing plate; 61. Fixing base; 62. Mounting slot; 63. Fixing bolt; 64. Mounting plate; 65. Scraper; 66. Support plate; 71. First connecting seat; 72. Locking screw; 73. Second connecting seat; 74. Air duct; 75. Air outlet; 76. Worm gear; 77. Worm; 8. Air pump. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5As shown, this utility model provides a scraper device for cleaning the drying cylinder during papermaking, including a mounting base 1, a drying cylinder body 2, a collection trough 3, a fixing base 61, an air duct 74, and an air pump 8. The fixing base 61 has an installation groove 62 inside, and an installation plate 64 is engaged inside the installation groove 62. A scraper 65 is fixedly connected to the upper end of the installation plate 64. The two ends of the air duct 74 are respectively connected to a first connecting seat 71 and a second connecting seat 73 by bearings. An air outlet 75 is connected inside the lower end of the air duct 74. A worm gear 76 and a worm 77 are provided inside the second connecting seat 73.

[0024] The drying cylinder body 2 is connected to the inside of the mounting base 1 by a bearing, and the collection tank 3 is fixedly connected to the lower end of one side surface of the mounting base 1.

[0025] The collection tank 3 can collect scraped impurities. When in use, water can be added to the collection tank 3 to suppress the movement of impurities inside the collection tank 3. The collection tank 3 is equipped with a drain port, which can be opened to discharge the impurities inside the collection tank 3.

[0026] The mounting base 1 has a servo motor 4 mounted on one end of its side surface, and a fixing plate 5 fixedly connected to the other end of its side surface. One end of the fixing base 61 is fixedly connected to the output shaft of the servo motor 4, and the other end of the fixing base 61 is connected to the inside of the fixing plate 5 by a bearing.

[0027] By starting the servo motor 4, the fixed base 61 can be rotated, thereby adjusting the angle of the fixed base 61. The rated output torque of the servo motor 4 is not less than 5 N·m, the speed range is 0 - 30 r / min, and it has forward and reverse limit protection functions.

[0028] The mounting groove 62 has internal threaded connections to a fixing bolt 63 on one side surface, and there are multiple sets of fixing bolts 63, with one end of each set of fixing bolts 63 abutting against the surface of the mounting plate 64.

[0029] The mounting slot 62 can restrict the position of the mounting plate 64, and multiple sets of fixing bolts 63 can fix the position of the mounting plate 64. Spring washers are provided between the multiple sets of fixing bolts 63 and the mounting slot 62 to effectively prevent loosening caused by vibration.

[0030] Among them, a support plate 66 is fixedly connected to the surface of the other side of the mounting plate 64, and the support plate 66 is provided in multiple sets. The upper ends of the multiple sets of support plates 66 are fixedly connected to scrapers 65, and the position of scrapers 65 corresponds to the position of the drying cylinder body 2 and the collection tank 3.

[0031] The arrangement of multiple support plates 66 can improve the overall structural strength of the scraper 65, minimize local deformation of the scraper 65, and improve the tightness of the fit between the scraper 65 and the outer surface of the drying cylinder body 2. The scraper 65 is made of polyurethane material with a Shore hardness of 85-95 and a thickness of 5-8mm. Its edge in contact with the drying cylinder body 2 is rounded with a radius of 0.5-1mm.

[0032] The first connecting seat 71 has a locking screw 72 connected to the internal thread on its upper surface, and the lower end of the locking screw 72 abuts against the outer surface of the air duct 74.

[0033] By rotating the locking screw 72, it can move longitudinally inside the first connecting seat 71. When the locking screw 72 moves, its lower surface can press against the outer surface of the air duct 74, thus fixing the position of the air duct 74 and preventing it from rotating.

[0034] One end of the duct 74 is fixedly connected to the worm gear 76, and the worm gear 76 is connected to the inside of the second connecting seat 73 by a bearing. The position of the air outlet 75 corresponds to the position of the scraper 65.

[0035] Rotating the worm gear 76 can drive the air duct 74 to rotate synchronously.

[0036] The second connecting seat 73 has an internal bearing on its upper surface connected to a worm 77, and the outer surface of the worm 77 meshes with the outer surface of the worm wheel 76. The air pump 8 is installed at one end of the upper surface of the mounting seat 1, and the output end of the air pump 8 is connected to the interior of the other end of the air duct 74.

[0037] The worm 77 can be rotated inside the second connecting seat 73 by rotating the worm 77. When rotating, the worm 77 can mesh with the outer surface of the worm wheel 76, thereby driving the worm wheel 76 to rotate. This design allows the operator to more precisely adjust the rotation angle of the air duct 74, thereby adjusting the air outlet 75 to a more suitable angle. The air pump 8 can deliver gas into the air duct 74 and then spray it out through the air outlet 75.

[0038] The working principle and usage process of this utility model are as follows: First, start the servo motor 4 to drive the fixed base 61 and scraper 65 to rotate. Then, drive the scraper 65 to fit against the outer surface of the drying cylinder body 2. Then, rotate the worm gear 77 to drive the worm wheel 76 and the air duct 74 to rotate. At this time, align the air outlet 75 with the outer surface of the scraper 65. Then, rotate the locking screw 72 to make its lower surface abut against the outer surface of the air duct 74 to fix its position. Then, start the air pump 8 to deliver gas into the air duct 74. Finally, discharge the gas through the air outlet 75 to clean the outer surface of the scraper 65.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scraper device for cleaning a drying cylinder during papermaking, comprising a mounting base (1), a drying cylinder body (2), a collection trough (3), a fixing base (61), an air duct (74), and an air pump (8), characterized in that: The fixed base (61) has an installation groove (62) inside, and an installation plate (64) is engaged inside the installation groove (62). A scraper (65) is fixedly connected to the upper end of the installation plate (64). The two ends of the air duct (74) are respectively connected to a first connecting seat (71) and a second connecting seat (73) by bearings. An air outlet (75) is connected inside the lower end of the air duct (74). A worm gear (76) and a worm (77) are provided inside the second connecting seat (73).

2. The doctor blade device for cleaning the drying cylinder during papermaking according to claim 1, characterized in that: The drying cylinder body (2) is connected to the inside of the mounting base (1) by a bearing, and the collection groove (3) is fixedly connected to the lower end of one side surface of the mounting base (1).

3. A scraper device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: A servo motor (4) is mounted on one end of one side surface of the mounting base (1), and a fixing plate (5) is fixedly connected to the other end of one side surface of the mounting base (1). One end of the fixing base (61) is fixedly connected to the output shaft of the servo motor (4), and the other end of the fixing base (61) is connected to the inside of the fixing plate (5) by a bearing.

4. A scraper device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: The mounting groove (62) has internal threaded connections to a fixing bolt (63) on one side surface, and there are multiple sets of fixing bolts (63), with one end of each set of fixing bolts (63) abutting against the surface of the mounting plate (64).

5. A doctor blade device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: A support plate (66) is fixedly connected to the surface of the other side of the mounting plate (64), and the support plate (66) is provided in multiple sets. The upper ends of the multiple sets of support plates (66) are fixedly connected to scrapers (65). The position of the scrapers (65) corresponds to the position of the drying cylinder body (2) and the collection groove (3).

6. A scraper device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: The upper surface of the first connecting seat (71) is internally threaded with a locking screw (72), and the lower end of the locking screw (72) abuts against the outer surface of the air duct (74).

7. A doctor blade device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: One end of the air duct (74) is fixedly connected to the worm gear (76), and the worm gear (76) is bearing connected inside the second connecting seat (73). The position of the air outlet (75) corresponds to the position of the scraper (65).

8. A doctor blade device for cleaning a drying cylinder during papermaking according to claim 1, characterized in that: The inner bearing on the upper surface of the second connecting seat (73) is connected to a worm (77), and the outer surface of the worm (77) meshes with the outer surface of the worm wheel (76). The air pump (8) is installed at one end of the upper surface of the mounting seat (1), and the output end of the air pump (8) is connected to the interior of the other end of the air duct (74).

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