An EP scraper for cleaning the drying cylinder of a paper machine

Abstract

This utility model discloses an EP scraper for cleaning the drying cylinder of a paper machine, including a scraper holder and a scraper body mounted on the scraper holder. A trapezoidal groove is provided in the middle of the back of the scraper body. The scraper holder includes a slide rail component and support components fixed to both ends of the slide rail component. The scraper body can elastically float between the two support components. A transmission component and two symmetrically distributed pressing components are provided on the inner side of the slide rail component. The scraper body of this utility model achieves elastic floating through the cooperation of the trapezoidal groove and the pressing components. After adjustment, it can adapt to different wear thicknesses on the surface of the drying cylinder. It adopts a worm gear transmission system, driving the wedge-shaped slider to move symmetrically by rotating the handwheel, achieving bidirectional synchronous adjustment of the scraper body's floating distance. This adjustment method has high precision. The scale plate of the support component can display the scraper body's floating distance in real time, making operation visual. The symmetrical pressing components ensure uniform force on the scraper body, avoiding skewing.

Description

Technical Field

[0001] This utility model belongs to the technical field of surface treatment of drying cylinders, specifically relating to an EP scraper for cleaning drying cylinders of papermaking machines. Background Technology

[0002] An EP scraper for cleaning the surface of a paper machine dryer cylinder is a tool or material specifically designed to repair wear on the surface of the dryer cylinder. Its core function is to restore the smoothness and thermal efficiency of the dryer cylinder through specific techniques. Its main purpose is to remove old coatings, rust, or loose materials, ensuring the substrate is clean. Utilizing the hardness and elasticity of the EP material, it evenly cuts through the worn area, restoring surface smoothness.

[0003] A search revealed that CN206666922U discloses a scraper device for a stripper film on a drying cylinder, comprising a scraper and guide rails. The scraper includes a blade surface and stops, with the stops fixed at both ends of the blade surface, forming a groove with the blade surface. The scraper is fixed to one side of a scraper mounting platform, which spans two parallel guide rails. The scraper mounting platform has through holes with bolts installed inside, positioned directly above the guide rails. This scraper device allows free sliding on the guide rails via the scraper mounting platform, facilitating adjustment of the position between the scraper and the drying cylinder, thereby adjusting the thickness of the stripper film on the drying cylinder surface. A graduated baffle on the scraper facilitates observation of the distance between the drying cylinder and the scraper. However, the above technology has the following problems: the scraper device fixes the scraper position by bolts on both sides. During adjustment, it is necessary to constantly visually observe the scale at both ends of the scraper, which makes it difficult to ensure synchronous adjustment at both ends of the scraper. This makes the adjustment difficult and the force at both ends is uneven, affecting the overall stability of the scraper. Utility Model Content

[0004] The purpose of this invention is to provide an EP scraper for cleaning the drying cylinder of a paper machine, so as to solve the problem mentioned in the background art that it is difficult to ensure the synchronous adjustment of both ends of the scraper.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an EP scraper for cleaning the drying cylinder of a paper machine, comprising a scraper holder and a scraper body mounted on the scraper holder. A trapezoidal groove is provided in the middle of the back of the scraper body. The scraper holder includes a slide rail component and support components fixed to both ends of the slide rail component. The scraper body can elastically float between the two support components. A transmission component and two pressing components symmetrically distributed in the trapezoidal groove are provided on the inner side of the slide rail component. An adjustment component is provided in the middle of the slide rail component to drive the two pressing components through the transmission component to adjust the floating distance of the scraper body.

[0006] Preferably, the trapezoidal groove has an isosceles trapezoidal groove structure with sloping sides, and the two ends of the blade body are provided with pressure feet, and the outer side of the pressure feet is provided with triangular pointers.

[0007] Preferably, the slide rail component includes a bracket and a groove rail fixed to both ends of the bracket, and the side of the groove rail is provided with grooves distributed along the length of the groove rail.

[0008] Preferably, the support component includes a mounting foot, a support is fixed on the mounting foot, a vertically arranged guide rod is fixed inside the support, the pressure foot is slidably connected to the outside of the guide rod, a spring is sleeved on the guide rod, the two ends of the spring respectively abut against the pressure foot and the support, and a scale plate is fixed on the outer side of the support along the length direction of the guide rod.

[0009] Preferably, the transmission component includes a shaft, with both ends of the shaft rotatably connected to supports on both sides, a worm gear fixed at the middle of the shaft, and external threads with opposite directions on both sides of the shaft located on the worm gear.

[0010] Preferably, the pressing component includes a wedge-shaped slider, the triangular inclined surface of the wedge-shaped slider is in contact with the trapezoidal inclined surfaces on both sides of the trapezoidal groove, the bottom of the wedge-shaped slider is threaded to the external thread outside the shaft, and the bottom sides of the wedge-shaped slider are fixed with slide bars that are slidably connected to the slide groove.

[0011] Preferably, the regulating component includes a worm gear, the worm gear being perpendicular to the axis of the shaft, the worm gear being rotatably connected to the bracket, a handwheel being fixed to one end of the worm gear, and the worm gear meshing with a worm wheel.

[0012] Compared with the prior art, this utility model provides an EP scraper for cleaning the drying cylinder of a paper machine, which has the following beneficial effects: The blade of this invention achieves elastic floating by cooperating with the top pressing component through a trapezoidal groove. After adjustment, it can adapt to different wear thicknesses on the surface of the drying cylinder. It adopts a worm gear transmission system, and the wedge-shaped slider is driven to move symmetrically by rotating the handwheel, so as to achieve bidirectional synchronous adjustment of the blade floating distance. This adjustment method has high adjustment accuracy. The scale plate of the support component can display the blade floating distance in real time, making the operation visual. The symmetrical top pressing component ensures that the blade is subjected to uniform force and avoids skewing. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of an EP scraper for cleaning the drying cylinder of a paper machine, as proposed in this utility model. Figure 2 This is a schematic diagram of the blade body and blade holder structure proposed in this utility model; Figure 3This is a schematic diagram of the blade structure proposed in this utility model; Figure 4 This is an exploded view of the tool holder structure proposed in this utility model; In the diagram: 1. Tool body; 11. Trapezoidal groove; 12. Presser foot; 13. Triangular pointer; 2. Tool holder; 21. Slide rail assembly; 211. Bracket; 212. Slot rail; 213. Slide groove; 22. Support assembly; 221. Mounting foot; 222. Support; 223. Guide rod; 224. Spring; 225. Scale plate; 23. Transmission assembly; 231. Shaft; 232. Worm gear; 233. External thread; 24. Pressing assembly; 241. Wedge slider; 242. Slide bar; 25. Adjustment assembly; 251. Worm gear; 252. Handwheel. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1 and Figure 2 This utility model provides a technical solution: an EP scraper for cleaning the drying cylinder of a paper machine, including a scraper holder 2 and a scraper body 1 mounted on the scraper holder 2. The back of the scraper body 1 is provided with a trapezoidal groove 11. The scraper holder 2 includes a slide rail component 21 and support components 22 fixed to both ends of the slide rail component 21. The scraper body 1 can float elastically between the two support components 22. The inner side of the slide rail component 21 is provided with a transmission component 23 and two pressing components 24 symmetrically distributed in the trapezoidal groove 11. The middle position of the slide rail component 21 is provided with a control component 25 that drives the two pressing components 24 through the transmission component 23 to adjust the floating distance of the scraper body 1. The scraper body 1 in this application has an elastic floating and precision adjustment mechanism, which makes it suitable for both stripping agent coating and repair of the worn surface of the drying cylinder.

[0016] Please see Figure 3 The trapezoidal groove 11 has an isosceles trapezoidal groove structure with sloping sides. The two ends of the cutter body 1 are provided with pressure feet 12, and the outer side of the pressure feet 12 is provided with triangular pointers 13.

[0017] Please see Figure 2 and Figure 4 The slide rail component 21 includes a bracket 211 and a groove 212 fixed to both ends of the bracket 211. The side of the groove 212 is provided with a groove 213 distributed along the length of the groove 212.

[0018] Furthermore, the support component 22 includes a mounting foot 221, a support 222 fixed on the mounting foot 221, a vertically arranged guide rod 223 fixed inside the support 222, a pressure foot 12 slidably connected to the outside of the guide rod 223, a spring 224 sleeved on the guide rod 223, the two ends of the spring 224 respectively abutting against the pressure foot 12 and the support 222, the blade 1 is buffered and connected to the guide rod 223 by the spring 224 to reduce mechanical impact, while the scraper mounting table and guide rail in the prior art are in rigid contact, which is prone to positional displacement due to vibration after long-term use. A scale plate 225 is fixed on the outer side of the support 222 along the length direction of the guide rod 223, and the triangular pointer 13 on the outside of the pressure foot 12 of the blade 1 cooperates with the scale plate 225 to directly read the relative position distance between the blade 1 and the drying cylinder.

[0019] Furthermore, the transmission component 23 includes a shaft 231, with both ends of the shaft 231 rotatably connected to supports 222 on both sides. A worm gear 232 is fixed in the middle of the shaft 231, and the shaft 231 is provided with external threads 233 on both sides of the worm gear 232 with opposite thread directions.

[0020] Furthermore, the top pressing component 24 includes a wedge-shaped slider 241. The triangular inclined surface of the wedge-shaped slider 241 fits into the trapezoidal inclined surfaces on both sides of the trapezoidal groove 11. The bottom of the wedge-shaped slider 241 is threaded to the external thread 233 outside the shaft 231. Slide bars 242 that are slidably connected to the slide groove 213 are fixed on both sides of the bottom of the wedge-shaped slider 241. The trapezoidal groove 11 and the inclined surface of the wedge-shaped slider 241 cooperate to form a stable structure, enhancing the stability of operation before and after adjustment.

[0021] Furthermore, the control component 25 includes a worm gear 251, which is perpendicular to the axis of the shaft 231. The worm gear 251 is rotatably connected to the bracket 211. A handwheel 252 is fixed to one end of the worm gear 251. The worm gear 251 meshes with the worm wheel 232. The worm gear 251 and handwheel 252 provide a mechanical amplification effect, reducing the adjustment torque requirement. At the same time, the self-locking effect of the worm gear 251 and the worm wheel 232 is used to maintain the stability of the cutter body 1.

[0022] The working principle and usage process of this utility model are as follows: When it is necessary to adjust the thickness of the surface treatment of the paper machine drying cylinder, the worm 251 can be rotated by the handwheel 252. The meshing of the worm 251 and the worm wheel 232 drives the shaft 231 to rotate. Through the thread action of the two external threads 233 on the shaft 231 and the two wedge-shaped sliders 241, and the sliding limit of the sliding bar 242 of the wedge-shaped sliders 241 by the sliding groove 213 on the groove 212, the two wedge-shaped sliders 241 can be driven to move synchronously relative to each other. Then, through the pressure of the trapezoidal inclined surfaces on both sides of the trapezoidal groove 11 by the triangular inclined surfaces of the two wedge-shaped sliders 241, and the elastic guidance of the spring 224 on the pressure foot 12 by the guide rod 223, the floating width of the knife body 1 can be adjusted, thereby adapting to the requirements of different surface treatment thicknesses of the paper machine drying cylinder.

[0023] 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. An EP scraper for cleaning the drying cylinder of a paper machine, comprising a scraper holder (2) and a scraper body (1) mounted on the scraper holder (2), characterized in that: The back of the blade (1) is provided with a trapezoidal groove (11) in the middle section. The blade holder (2) includes a slide rail component (21) and support components (22) fixed at both ends of the slide rail component (21). The blade (1) can float elastically between the two support components (22). The slide rail component (21) is provided with a transmission component (23) and two pressing components (24) symmetrically distributed in the trapezoidal groove (11) on the inner side. The slide rail component (21) is provided with a control component (25) that drives the two pressing components (24) through the transmission component (23) to adjust the floating distance of the blade (1).

2. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 1, characterized in that: The trapezoidal groove (11) has an isosceles trapezoidal groove structure with inclined surfaces on both sides. The two ends of the blade body (1) are provided with pressure feet (12), and the outer side of the pressure feet (12) is provided with triangular pointers (13).

3. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 2, characterized in that: The slide rail component (21) includes a bracket (211) and a groove (212) fixed to both ends of the bracket (211). The side of the groove (212) is provided with a groove (213) distributed along the length of the groove (212).

4. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 3, characterized in that: The support component (22) includes a mounting foot (221), a support (222) is fixed on the mounting foot (221), a vertically arranged guide rod (223) is fixed on the inner side of the support (222), the pressure foot (12) is slidably connected to the outside of the guide rod (223), a spring (224) is sleeved on the guide rod (223), the two ends of the spring (224) respectively abut against the pressure foot (12) and the support (222), and a scale plate (225) is fixed on the outer side of the support (222) along the length direction of the guide rod (223).

5. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 4, characterized in that: The transmission component (23) includes a shaft (231), the two ends of which are rotatably connected to supports (222) on both sides. A worm gear (232) is fixed in the middle of the shaft (231), and the shaft (231) is provided with external threads (233) with opposite thread directions on both sides of the worm gear (232).

6. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 5, characterized in that: The top pressing component (24) includes a wedge-shaped slider (241), the triangular inclined surface of the wedge-shaped slider (241) is in contact with the trapezoidal inclined surfaces on both sides of the trapezoidal groove (11), the bottom of the wedge-shaped slider (241) is threaded to the external thread (233) outside the shaft (231), and the bottom sides of the wedge-shaped slider (241) are fixed with slide bars (242) that are slidably connected to the slide groove (213).

7. The EP scraper for cleaning the drying cylinder of a paper machine according to claim 5, characterized in that: The regulating component (25) includes a worm (251), which is perpendicular to the axis of the shaft (231). The worm (251) is rotatably connected to the bracket (211). A handwheel (252) is fixed at one end of the worm (251), and the worm (251) meshes with the worm wheel (232).

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