Scraper device

Abstract

The utility model provides a scraper device, which relates to the technical field of scraper devices and comprises a scraper shell and a scraper rest. A cavity is formed in the scraper shell; a vertical channel for communicating the cavity with the outside is arranged on the outer wall of the scraper shell; the inner end of the scraper rest is inserted into the bottom of the cavity through the vertical channel and movably connected with the bottom of the cavity. Rotary supporting shafts are rotationally connected to the inner walls, located on the two sides of the vertical channel, of the scraper shell, and the scraper rest is limited between the rotary supporting shafts on the two sides in a swinging mode; a scraper driving assembly is arranged in the cavity and drives the inner end of the scraper rest to move back and forth so that the outer end of the scraper rest can swing back and forth. The device has the advantages that the swinging smoothness and the positioning accuracy are improved, meanwhile, the scraper rest can be better limited, the better swinging effect is achieved, the gap between the scraper rest and the vertical channel can be reduced, and materials and impurities are prevented from entering the cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of scraping devices, and more specifically, to a scraping device. Background Art

[0002] Many rolling cleaning and discharging devices on fiber drawing machines, paper machines, and other roller conveying devices include scraping support devices, which are usually called scraping tool holders. They are used to support scraping knives, crepe paper knives, scraping blades, etc.

[0003] In the existing scraping device, since the swinging cylinder of the swing rod is rotatably connected to the bottom of the scraping body, the overall swinging amplitude of the upper part of the swing rod is large. Depending only on one support point, it is easy to cause poor swinging stability and accuracy. In order to realize the swinging of the swing rod, the vertical channel on the scraping body is flared, resulting in too large a gap between the vertical channel and the swing rod, and a large gap is also formed between the arc-shaped baffle and the vertical channel. During actual use, it is very easy for materials, impurities, and waste to enter the scraping body, resulting in blockage of the inner wall, affecting the driving of the airbag, and at the same time, there will be a phenomenon that the airbag gets stuck when it contracts and enters the gap, affecting normal use. Summary of the Utility Model

[0004] The technical problem to be solved by the present utility model is that the scraping tool holder of the existing scraping device rotates unstably and has poor positioning accuracy, and the gap between the vertical channel on the scraping housing and the scraping tool holder is too large, making it easy for materials and impurities to enter. To overcome the above defects of the prior art, the present invention provides a scraping tool holder that realizes support and movement at the bottom, and through the rotating support shafts on both sides of the vertical channel, it is convenient to limit the middle part of the scraping tool holder, thereby improving the swinging stability, accuracy, and overall swinging effect, and at the same time solving the problem that the vertical channel is too large and easy for materials and impurities to enter.

[0005] To achieve the purpose of the present utility model, the following technical solutions are adopted:

[0006] A scraping device, comprising a scraping blade housing and a scraping blade holder; a cavity is arranged inside the scraping blade housing; a vertical channel communicating the cavity with the outside is arranged on the outer wall of the scraping blade housing; the lower end of the scraping blade holder is inserted radially into the bottom of the cavity along the vertical channel, and the lower end of the scraping blade holder is movably connected to the bottom of the cavity; the outer end of the scraping blade holder is located outside the scraping blade housing; rotating support shafts are rotatably connected to the inner walls of the scraping blade housing on the left and right sides of the vertical channel; the scraping blade holder is swing-limited between the rotating support shafts on the left and right sides; a scraping blade driving assembly for driving the scraping blade holder to swing is arranged in the cavity, and the lower end of the scraping blade holder is driven to move back and forth through the scraping blade driving assembly to realize the back-and-forth swing of the outer end of the scraping blade holder. Through the movable connection between the bottom of the scraping blade holder and the bottom of the cavity, the smoothness of the swing and the accuracy of the positioning can be improved, and the support of the scraping blade holder can be ensured. At the same time, through the rotating support shafts on both sides, the middle part of the scraping blade holder can be better limited and a better swinging effect can be achieved, the gap between the scraping blade holder and the vertical channel can be reduced, effectively preventing materials and impurities from entering the cavity, replacing the existing device with the scraping blade holder rotatably connected at the bottom, solving the problem that the existing scraping blade holder is only supported and rotated at the bottom, and the upper part of the scraping blade holder rotates unstably, improving the overall support of the scraping blade holder and the stability and accuracy of the swing. At the same time, it also solves the problem that the opening size of the vertical channel of the existing scraping blade housing is too large and it is easy to enter materials and impurities.

[0007] Preferably, limiting grooves are arranged on the inner walls of the scraping blade housing on both sides of the vertical channel; through holes penetrating in the direction of both sides of the vertical channel are arranged on the scraping blade holder at the positions of the limiting grooves; limiting baffles are inserted into the through holes; both ends of the limiting baffles are limited on the limiting grooves on both sides. By limiting the limiting baffle in the limiting groove, the through hole on the scraping blade holder can swing with the limiting baffle, so as to prevent the lower end of the scraping blade holder from leaving the bottom of the cavity during the swinging process, achieving a good limiting effect, and at the same time, it can also prevent materials and impurities from entering.

[0008] Preferably, an arc-shaped sliding groove is arranged at the bottom of the cavity; the left side of the lower end of the scraping blade holder is in limiting cooperation with the left side wall of the arc-shaped sliding groove, and the right side of the lower end of the scraping blade holder is in limiting cooperation with the right side wall of the arc-shaped sliding groove; a rolling support shaft is rotatably connected to the bottom surface of the lower end of the scraping blade holder, the rolling support shaft is arranged along the axial direction, and the outer peripheral wall of the rolling support shaft is in rolling connection with the arc-shaped sliding groove. Through the arc-shaped sliding groove, the swing of the lower end of the scraping blade holder can be limited, and at the same time, the smoothness and fluency of the rolling connection are improved through the rolling support shaft, ensuring the accurate positioning of the scraping blade holder.

[0009] Preferably, the first elastic sealing plate and the second elastic sealing plate are connected to both sides of the outer end of the scraper holder, and the end of the first elastic sealing plate close to the scraper housing abuts against the outer wall of the scraper housing on one side of the vertical channel, and a seal is achieved between one end of the first elastic sealing plate and the outer wall of one side of the scraper housing; the end of the second elastic sealing plate close to the scraper housing abuts against the outer wall of the scraper housing on the other side of the vertical channel, and a seal is achieved between one end of the second elastic sealing plate and the outer wall of the other side of the scraper housing. The first elastic sealing plate and the second elastic sealing plate can prevent external materials and impurities from entering the scraper housing, and through the effect of elasticity, the elastic sealing plate can always keep in contact with the scraper housing during the back and forth swing of the scraper holder, ensuring that a good sealing effect can always be maintained during the swinging process.

[0010] Preferably, U-shaped mounting grooves are provided on both sides of the outer end of the scraper holder; a limiting step is provided on one side of the U-shaped mounting groove; the upper ends of the first elastic sealing plate and the second elastic sealing plate are bent to form a U-shaped portion, and the U-shaped portion is limited in the U-shaped mounting groove, and one end of the U-shaped portion is against the limiting step. The elastic sealing plate can be limited by the limiting cooperation between the U-shaped mounting groove and the U-shaped portion, and at the same time, one end of the U-shaped portion can be positioned conveniently by the limiting step to prevent the U-shaped portion from being separated from the U-shaped mounting groove, thereby achieving the effect of fixed connection.

[0011] Preferably, the scraper housing is provided with guide protrusions on both sides of the outer end of the vertical channel; the outer wall of the guide protrusion is provided with an arc-shaped guide surface, and the other ends of the first elastic sealing plate and the second elastic sealing plate are provided with sealing overlaps, and the sealing overlaps overlap the arc-shaped guide surface. The guide protrusions facilitate the extension of the vertical channel, so that the scraper holder can have a larger swing space, and the arc-shaped guide surface can cooperate with the elastic sealing plate, so that the elastic sealing plate can slide smoothly along the arc-shaped guide surface when swinging, and the sealing between the arc-shaped guide surface and the elastic sealing plate is ensured.

[0012] Preferably, the housing positioning assembly is also included; the housing positioning assembly includes a positioning seat and a positioning pressure plate; the positioning seat is provided with a placement groove for placing the scraper housing; the positioning pressure plate is rotatably connected to the positioning seat, and the positioning pressure plate is fixed to the positioning seat by a pressure plate bolt, so that the scraper housing after the angle is adjusted is locked and fixed in the placement groove. The housing positioning assembly facilitates the rotation adjustment of the scraper housing, and can be fixed and locked after the adjustment is positioned, thereby improving the convenience of adjustment and the overall flexibility.

[0013] Preferably, a rotating shaft groove is provided on the positioning seat; a pressing plate rotating shaft is provided at the bottom of the pressing plate bolt; and the pressing plate rotating shaft is rotatably connected in the rotating shaft groove. The upper inner wall of the pressing plate rotating shaft is provided with a matching pressing groove; the matching pressing groove is connected to the placement groove to form an arc matching the outer peripheral wall of the scraping knife housing. The bottom of the matching pressing groove is provided with a first tooth surface; the outer peripheral wall of the scraping knife housing is provided with a second tooth surface; when pressing, the first tooth surface meshes with the second tooth surface. Through the cooperation of the first tooth surface and the second tooth surface, the scraping knife housing is further prevented from rotating after being fixed, thereby further improving the firmness and stability of the scraping knife housing after being pressed.

[0014] Preferably, the scraping knife driving assembly includes a first airbag driving part and a second airbag driving part; both the first airbag driving part and the second airbag driving part are located in the cavity, and the first airbag driving part and the second airbag driving part are respectively located on both sides of the scraping knife holder; a convex airbag anti-displacement baffle is provided at the lower end of the scraping knife holder; a rolling groove is provided on the bottom surface of the airbag anti-displacement baffle; the rolling support shaft is rotatably connected in the rolling groove. The reciprocating swing of the scraping knife holder is controlled by the expansion or contraction of the first airbag driving part and the second airbag driving part. The airbag anti-displacement baffle can facilitate better limiting of the first airbag driving part and the second airbag driving part, preventing the first airbag driving part and the second airbag driving part from displacing during the contraction process.

[0015] Preferably, a scraping knife is further included, and the scraping knife is detachably connected to the outer end of the scraping knife holder; an installation slot is provided at the outer end of the scraping knife holder; the installation slot is vertically arranged and opens upward; the scraping knife is vertically inserted into the installation slot and fixed to the scraping knife holder through a transversely connected connecting pin. The detachable installation method facilitates the replacement of the scraping knife. The installation slot facilitates the placement of the scraping knife holder, and at the same time, the connecting pin facilitates the detachable installation and improves the installation convenience.

[0016] In summary, the advantages of the present utility model are that the device can improve the smoothness of swinging and the accuracy of positioning by rolling connection between the bottom of the scraping knife holder and the bottom of the cavity, and ensure the support of the scraping knife holder. At the same time, the middle part of the scraping knife holder can be better limited and have a better swinging effect through the rotating support shafts on both sides, which can reduce the gap between the scraping knife holder and the vertical channel, prevent materials and impurities from entering the cavity, replace the existing device with a scraping knife holder rotatably connected at the bottom, solve the problem that the existing scraping knife holder is only supported and rotated at the bottom and the upper part of the scraping knife holder rotates unstably, improve the overall support of the scraping knife holder and the stability and accuracy of swinging, and at the same time solve the problem that the vertical channel of the existing scraping knife housing is too large and easily enters materials and impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the blade device of the present utility model.

[0018] Figure 2 It is a partial enlarged view of the blade device of the present utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the housing positioning component in the present utility model.

[0020] Explanation of reference numerals:

[0021] 1. Blade housing; 10. Second tooth surface; 11. Cavity; 12. Vertical channel; 13. Limit groove; 14. Arc-shaped sliding groove; 15. Guide protrusion; 16. Arc-shaped guide surface; 2. Blade holder; 20. Through hole; 201. Limit baffle; 21. Rolling support shaft; 22. Airbag anti-displacement baffle; 23. U-shaped mounting groove; 24. Limit step; 25. Mounting notch; 3. Blade; 4. Rotating support shaft; 51. First airbag driving part; 52. Second airbag driving part; 6. First elastic sealing plate; 61. U-shaped part; 62. Sealing overlapping part; 7. Second elastic sealing plate; 8. Connecting pin; 91. Positioning seat; 92. Positioning pressing plate; 93. Placing groove; 94. Pressing plate bolt; 95. Rotating shaft groove; 96. Pressing plate rotating shaft; 97. Matching pressing groove; 98. First tooth surface. Detailed implementation manners

[0022] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0023] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0024] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] As Figures 1 to 3 shown, a blade structure for a papermaking device includes a blade housing 1, a blade holder 2 and a blade 3; the cross-section of the blade housing 1 is a circular structure that is symmetric about the left and right, and a cavity 11 with a cross-section in the shape of a beetle is provided in the middle of the blade housing 1; a vertical channel 12 communicating the cavity 11 with the outside is provided on the outer wall of the blade housing 1; the center line of the vertical channel 12 is aligned with the center line of the cavity 11 on the same straight line. The lower end of the blade holder 2 is inserted into the bottom of the cavity 11 through the vertical channel 12, and the lower end of the blade holder 2 is movably connected to the inner wall of the bottom of the cavity 11 in the blade housing 1, and the upper end of the blade holder 2 is located outside the vertical channel 12 of the blade housing 1; rotating support shafts 4 are rotatably connected to the inner walls on the left and right sides of the vertical channel 12 of the blade housing 1, and the rotating support shafts 4 are arranged along the axial direction (front-back direction); the blade holder 2 is swing-limited between the outer peripheral walls of the rotating support shafts 4 on the left and right sides; a blade driving assembly for driving the blade holder 2 to swing left and right is provided in the cavity 11, and the lower end of the blade holder 2 is driven to move back and forth through the blade driving assembly to realize the back-and-forth swing of the upper end of the blade holder 2. The blade 3 is detachably connected to the outer end of the blade holder 2, and the replacement of the blade 3 is facilitated by the detachable installation method. This structure can improve the smoothness of swinging and the accuracy of positioning by the movable connection between the bottom of the blade holder 2 and the bottom of the cavity 11, and ensure the support of the blade holder 2. At the same time, the outer part of the blade holder 2 can be better limited and have a better swinging effect through the rotating support shafts 4 on both sides, which can reduce the gap between the blade holder 2 and the vertical channel 12, effectively preventing materials and impurities from entering the cavity 11, replacing the existing structure where the blade holder 2 is rotatably connected at the bottom, solving the problem that the upper part of the existing blade holder 2 rotates unstably when only supported and rotated at the bottom, improving the overall support of the blade holder 2 as well as the stability and accuracy of swinging. At the same time, it also solves the problem that the opening size of the vertical channel 12 on the existing blade housing 1 is too large and it is easy for materials and impurities to enter.

[0027] As Figures 1 to 3As shown in the figure, limiting grooves 13 are provided on the inner walls of the scraping knife housing 1 on both the left and right sides of the vertical channel 12; and the limiting grooves 13 are located above the rotating support shaft 4. A through hole 20 penetrating in the left-right direction is provided on the scraping knife holder 2 at the position of the limiting groove 13; a limiting baffle 201 is inserted into the through hole 20, and the diameter of the through hole 20 is larger than the diameter of the limiting baffle 201, facilitating the up-and-down swing of the limiting baffle 201 in the through hole 20. The left and right ends of the limiting baffle 201 are respectively limited on the limiting grooves 13 on both sides. By limiting the limiting baffle 201 in the limiting groove 13, the through hole 20 on the scraping knife holder 2 can swing with the limiting baffle 201, thereby preventing the lower end of the scraping knife holder 2 from leaving the bottom of the cavity 11 during the swinging process, ensuring that the lower end of the scraping knife holder 2 abuts against the bottom of the cavity, achieving a good limiting effect, and at the same time, it can also prevent materials and impurities from entering.

[0028] As Figures 1 to 2 shown in the figure, an arc-shaped sliding groove 14 is provided at the bottom of the cavity 11. Through the arc-shaped sliding groove 14, the swing of the lower end of the scraping knife holder 2 can be limited. The left side of the lower end of the scraping knife holder 2 is in limiting cooperation with the left side wall of the arc-shaped sliding groove 14, and when the lower end of the scraping knife holder 2 swings to the left to the maximum extent, it can abut against the left side wall of the arc-shaped sliding groove 14. The right side of the lower end of the scraping knife holder 2 is in limiting cooperation with the right side wall of the arc-shaped sliding groove 14, and the principle is the same as that of the left side of the lower end of the scraping knife holder 2. A rolling support shaft 21 is rotatably connected to the bottom surface of the lower end of the scraping knife holder 2. The rolling support shaft 21 is arranged along the axial direction (front-back direction), which improves the smoothness and fluency of the rolling connection through the rolling support shaft 21 and ensures the accurate positioning of the scraping knife holder 2.

[0029] As Figures 1 to 2 shown in the figure, the two sides of the outer end of the scraping knife holder 2 are respectively connected with a first elastic sealing plate 6 and a second elastic sealing plate 7. The lower end of the first elastic sealing plate 6 close to the scraping knife housing 1 abuts against the outer wall of the scraping knife housing 1 on the left side of the vertical channel 12, and a contact seal is achieved between the lower end of the first elastic sealing plate 6 and the left outer wall of the scraping knife housing 1; the lower end of the second elastic sealing plate 7 close to the scraping knife housing 1 abuts against the outer wall of the scraping knife housing 1 on the right side of the vertical channel 12, and a contact seal is achieved between the lower end of the second elastic sealing plate 7 and the right outer wall of the scraping knife housing 1. Through the first elastic sealing plate 6 and the second elastic sealing plate 7, it is possible to prevent external materials and impurities from entering the scraping knife housing 1, and through the elastic effect, during the back-and-forth swing of the scraping knife holder 2, the elastic sealing plate can always be in contact with the scraping knife housing 1, ensuring that a good sealing effect can always be maintained during the swinging process.

[0030] As Figures 1 to 2As shown, arc-shaped guide protrusions 15 are provided on both sides of the upper end of the vertical channel 12 of the scraper housing 1; the outer wall of the guide protrusion 15 is provided with an arc-shaped guide surface 16, and the arc-shaped guide surface 16 is arc-shaped. The other ends of the first elastic sealing plate 6 and the second elastic sealing plate 7 are provided with a sealing overlap 62, which is formed by bending the elastic sealing plate upward, and forming an obtuse angle between the sealing overlap 62 and the elastic sealing plate, and the sealing overlap 62 overlaps the arc-shaped guide surface 16. The guide protrusion 15 facilitates the extension of the vertical channel, and can provide a larger swing space for the scraper holder 2. At the same time, the arc-shaped guide surface 16 can cooperate with the elastic sealing plate, so that it is convenient to ensure that the elastic sealing plate can slide smoothly along the arc-shaped guide surface 16 during swinging, and ensure the sealing between the arc-shaped guide surface 16 and the elastic sealing plate. U-shaped mounting grooves 23 with downward vertical channels are symmetrically arranged on the left and right sides of the upper part of the scraper holder 2; a limiting step 24 is arranged on one side of the U-shaped mounting groove 23 close to the scraper holder 2; the upper ends of the first elastic sealing plate 6 and the second elastic sealing plate 7 are bent to form a U-shaped portion 61, and the U-shaped portion 61 is limited in the U-shaped mounting groove 23, and the end of the U-shaped portion 61 is against the limiting step 24. The elastic sealing plate can be limited by the limiting cooperation between the U-shaped mounting groove 23 and the U-shaped portion 61, and at the same time, one end of the U-shaped portion 61 can be easily positioned through the limiting step 24 to prevent the U-shaped portion 61 from being separated from the U-shaped mounting groove 23, thereby achieving the function of fixed connection.

[0031] like Figure 3 As shown, the housing positioning assembly also includes a housing positioning assembly, which includes a positioning seat 91 and a positioning pressure plate 92; the positioning seat 91 is provided with an arc-shaped placement groove 93 for placing the scraper housing 1; the positioning pressure plate 92 is rotatably connected to the positioning seat 91, and is connected to the positioning seat 91 through the pressure plate bolt 94 through the positioning pressure plate 92, so that the positioning pressure plate 92 is fixed to the positioning seat 91, and the scraper housing 1 after the angle is adjusted is locked and fixed in the placement groove 93. The housing positioning assembly facilitates the rotation adjustment of the scraper housing 1, and can be fixed and locked after the adjustment is positioned, thereby improving the convenience of adjustment and the overall flexibility. A rotating shaft groove 95 is provided on the positioning seat 91 at one side of the placement groove 93; a pressure plate rotating shaft 96 is provided at the bottom of the pressure plate bolt 94; and the pressure plate rotating shaft 96 is rotatably connected in the rotating shaft groove 95, and a circular arc-shaped matching pressure groove 97 is provided on the upper inner wall of the pressure plate rotating shaft 96; the matching pressure groove 97 is connected with the placement groove 93 to form a circle, and matches the outer peripheral wall of the scraper housing 1. A first tooth surface 98 is provided on the bottom of the arc-shaped groove that matches the pressing groove 97; a circle of second tooth surfaces 10 is provided on the outer peripheral wall of the scraper housing 1 along the circumferential direction; when pressed, the first tooth surface 98 meshes with the second tooth surface 10. The first tooth surface 98 and the second tooth surface 10 cooperate to further prevent the scraper housing 1 from rotating after being fixed, thereby further improving the firmness and stability of the scraper housing 1 after being pressed.

[0032] As shown Figures 1 to 2 in the figure, the scraper drive assembly includes a first airbag drive part 51 and a second airbag drive part 52; both the first airbag drive part 51 and the second airbag drive part 52 are located in the cavity 11, and the first airbag drive part 51 and the second airbag drive part 52 are respectively located on the left and right sides of the scraper tool holder 2. The back-and-forth swing of the scraper tool holder 2 is controlled by the expansion and contraction of the first airbag drive part 51 and the second airbag drive part 52. The lower end of the scraper tool holder 2 is provided with a wing-shaped airbag anti-displacement baffle 22 protruding to the left and right sides; the airbag anti-displacement baffle 22 is located in the arc-shaped chute 14, and the upper side of the airbag anti-displacement baffle 22 is arc-shaped and can match the outer shape of the airbag, so as to facilitate better wrapping and limiting of the airbag and prevent the airbag from falling into the arc-shaped chute 14 during the contraction process. The bottom surface of the airbag anti-displacement baffle 22 is provided with a rolling groove; the rolling support shaft 21 is rotatably connected in the rolling groove. The airbag anti-displacement baffle 22 can facilitate better limiting of the first airbag drive part 51 and the second airbag drive part 52 and prevent the first airbag drive part 51 and the second airbag drive part 52 from moving during the contraction process.

[0033] As shown Figures 1 to 2 in the figure, an installation notch 25 is provided at the upper end of the scraper tool holder 2; the installation notch 25 is vertically arranged and opens upward, and the scraper 3 is vertically inserted into the installation notch 25, and the scraper 3 is fixed on the scraper tool holder 2 through a transversely connected connecting pin 8. The installation notch 25 facilitates the insertion of the scraper tool holder 2, and at the same time, the detachable installation is facilitated through the connecting pin 8, and the installation convenience is improved.

[0034] In the description of the embodiments of the present application, it should be noted that in the description of the present application, the terms "inner", "outer", etc. indicating the direction or position relationship are based on the direction or position relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0035] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] As described above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A scraping device, characterized in that, It includes a scraper housing (1) and a scraper tool holder (2); a cavity (11) is provided inside the scraper housing (1); a vertical channel (12) communicating the cavity (11) with the outside is provided on the outer wall of the scraper housing (1); the lower end of the scraper tool holder (2) is inserted into the bottom of the cavity (11) through the vertical channel (12), and the lower end of the scraper tool holder (2) is movably connected to the bottom of the cavity (11); the upper end of the scraper tool holder (2) is located outside the scraper housing (1); rotating support shafts (4) are rotatably connected to the inner walls on the left and right sides of the vertical channel (12) on the scraper housing (1), and the scraper tool holder (2) is swing-limited between the rotating support shafts (4) on the left and right sides; a scraper driving assembly for driving the scraper tool holder (2) to swing is provided in the cavity (11), and the inner end of the scraper tool holder (2) is driven to move back and forth through the scraper driving assembly to realize the back-and-forth swing of the outer end of the scraper tool holder (2).

2. The doctor blade device according to claim 1, wherein, Limiting grooves (13) are provided on the inner walls on both sides of the vertical channel (12) on the scraper housing (1); through holes (20) penetrating in the direction of both sides of the vertical channel (12) are provided on the scraper tool holder (2) at the positions of the limiting grooves (13); limiting baffles (201) are inserted into the through holes (20); both ends of the limiting baffles (201) are limited on the limiting grooves (13) on both sides respectively.

3. The doctor blade device according to claim 1, characterized in that, An arc-shaped sliding groove (14) is provided at the bottom of the cavity (11); the left side of the lower end of the scraper tool holder (2) is in limiting fit with the left side wall of the arc-shaped sliding groove (14), and the right side of the lower end of the scraper tool holder (2) is in limiting fit with the right side wall of the arc-shaped sliding groove (14); a rolling support shaft (21) is rotatably connected to the bottom surface of the lower end of the scraper tool holder (2), and the outer peripheral wall of the rolling support shaft (21) is in rolling connection with the arc-shaped sliding groove (14).

4. The doctor blade device according to claim 1, wherein First elastic sealing plates (6) and second elastic sealing plates (7) are respectively connected to both sides of the outer end of the scraper tool holder (2). One end of the first elastic sealing plate (6) close to the scraper housing (1) abuts against the outer wall of the scraper housing (1) on one side of the vertical channel (12), and contact sealing is realized between one end of the first elastic sealing plate (6) and the outer wall on one side of the scraper housing (1); one end of the second elastic sealing plate (7) close to the scraper housing (1) abuts against the outer wall of the scraper housing (1) on the other side of the vertical channel (12), and contact sealing is realized between one end of the second elastic sealing plate (7) and the outer wall on the other side of the scraper housing (1).

5. The doctor blade device according to claim 4, characterized in that U-shaped mounting grooves (23) are provided on both sides of the outer end of the scraper tool holder (2); a limiting step (24) is provided on one side of the U-shaped mounting groove (23); the upper ends of the first elastic sealing plate (6) and the second elastic sealing plate (7) are bent to form U-shaped parts (61), and the U-shaped parts (61) are limited and installed in the U-shaped mounting grooves (23), and one end of the U-shaped parts (61) abuts against the limiting step (24).

6. The doctor blade device according to claim 4, characterized in that, On both sides of the outer end of the vertical channel (12) on the scraper housing (1), there are guiding protrusions (15) provided; on the outer wall of the guiding protrusion (15), there is an arc-shaped guiding surface (16). At the other ends of the first elastic sealing plate (6) and the second elastic sealing plate (7), there are sealing overlapping parts (62), and the sealing overlapping parts (62) overlap on the arc-shaped guiding surface (16).

7. The doctor blade device according to claim 1, wherein, It further includes a housing positioning component; the housing positioning component includes a positioning seat (91) and a positioning pressing plate (92); on the positioning seat (91), there is a placing groove (93) for placing the scraper housing (1); the positioning pressing plate (92) is rotatably connected to the positioning seat (91), and the positioning pressing plate (92) is fixed to the positioning seat (91) through a pressing plate bolt (94), so that the scraper housing (1) after adjusting the angle is locked and fixed in the placing groove (93).

8. The doctor blade device according to claim 7, wherein, On the positioning seat (91), there is a rotating shaft groove (95); at the bottom of the pressing plate bolt (94), there is a pressing plate rotating shaft (96); and the pressing plate rotating shaft (96) is rotatably connected in the rotating shaft groove (95). On the inner wall of the upper part of the pressing plate rotating shaft (96), there is a matching pressing groove (97); the matching pressing groove (97) and the placing groove (93) are connected to form an arc shape matching the outer peripheral wall of the scraper housing (1). At the bottom of the matching pressing groove (97), there is a first tooth surface (98); on the outer peripheral wall of the scraper housing (1), there is a second tooth surface (10); when pressing tightly, the first tooth surface (98) meshes with the second tooth surface (10).

9. The doctor blade device according to claim 3, characterized in that The scraper driving component includes a first airbag driving part (51) and a second airbag driving part (52); both the first airbag driving part (51) and the second airbag driving part (52) are located in the cavity (11), and the first airbag driving part (51) and the second airbag driving part (52) are respectively located on the left and right sides of the scraper tool holder (2); at the lower end of the scraper tool holder (2), there are airbag anti-displacement baffles (22) protruding towards the left and right sides; on the bottom surface of the airbag anti-displacement baffle (22), there is a rolling groove; the rolling support shaft (21) is rotatably connected in the rolling groove.

10. The doctor blade device according to claim 1, wherein, It further includes a scraper (3), and the scraper (3) is detachably connected to the outer end of the scraper tool holder (2); on the outer end of the scraper tool holder (2), there is an installation notch (25); the installation notch (25) is vertically arranged and opens upwards; the scraper (3) is vertically inserted into the installation notch (25), and the scraper (3) is fixed to the scraper tool holder (2) through a connecting pin (8) connected horizontally.

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