Coating device and process for surface kraft paper based on polymeric cationic retention and drainage aid

Abstract

The present invention provides a coating device for cowhide paper based on a polymeric cationic retention and drainage aid and a process thereof, and relates to the technical field of cowhide paper coating, comprising: a base; a support frame is fixedly connected to the middle position of the top of the base, an adjustment frame is fixedly connected to the top position of the support frame, a motor A is fixedly connected to the left position of the adjustment frame, and the rotating shaft of the motor A is fixedly connected to the left position of the active roller. The flap plate provided by the sliding flap part at the lower position of the reciprocating frame rotates synchronously inside the mixing frame. If the sliding flap part and the mixing fan blade are adjusted to rotate in the opposite direction, it can be ensured that the upper and lower sides of the polymeric cationic retention and drainage aid are irregularly mixed and fully mixed during the mixing and blending process. The existing problem that if the polymeric cationic retention and drainage aid is not fully mixed during the proportioning and mixing process of the polymeric cationic retention and drainage aid, the quality of the cowhide paper coating process will be directly affected.

Description

Technical Field

[0001] The invention relates to the technical field of surface kraft paper coating, in particular to a surface kraft paper coating device based on a polymeric cationic retention and drainage aid and a process thereof. Background Art

[0002] Coating is a process that applies a liquid or powdered substance to a substrate to impart specific functionality or appearance. The primary benefits of coated kraft paper include improving its physical properties, enhancing printing quality, increasing product value, and expanding its application range. By applying a uniform coating to its surface, coated kraft paper significantly enhances its physical properties, such as tensile strength, folding resistance, surface smoothness, and coating uniformity. These improvements enable coated kraft paper to better meet various packaging needs, particularly in applications requiring high strength and durability.

[0003] The invention disclosed in publication number CN103321083A relates to a curtain-coated white-top kraft paper production apparatus and method, comprising: a three-fold screen section, a press section, a pre-drying section, a size press, a post-drying section, a hard calender, a coating machine, a soft calender section, and a paper reel, arranged in sequence along a horizontal direction. The coating machine comprises a blade coater for primer coating, a curtain coater for intermediate coating, and a blade coater for top coating. The non-contact coating method utilizes the coating's technical characteristics of excellent covering power, high paper whiteness, and excellent ink absorbency, enabling high-speed coating on ordinary kraft paper to produce qualified coated white-top kraft paper that meets market requirements.

[0004] Based on the search of the above-mentioned patents and the application of existing surface linerboard coating processes, it is understood that in the application of polymeric cationic retention and drainage aids in the production of coated paperboard, the retention aid concentration used in the pulp, base pulp, and pulp processes is 0.0%, and the flow rates are 40 / OL, 0.50L / h, and 6L / h, respectively. This shows that in the production process of coated white paperboard, by controlling the appropriate concentration and flow rate, the retention rate of the paper can be effectively improved, and the performance of the paper can be improved, such as reducing roughness and improving smoothness and stiffness. However, if the polymeric cationic retention and drainage aids are not fully mixed during the proportioning and mixing process, it will directly affect the quality of the linerboard coating process. In addition, the coating of the surface linerboard and the heating of the surface linerboard after mixing are separate operations, and the production process is time-consuming.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a surface kraft paper coating device and process based on a polymeric cationic retention and drainage aid are provided, in order to achieve a more practical purpose. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a surface-coating device for kraft paper based on a polymeric cationic retention and drainage aid and a process thereof, so as to solve the existing problem that during the process of proportioning and mixing the polymeric cationic retention and drainage aid, if the polymeric cationic retention and drainage aid is not fully mixed, it will directly affect the quality of the kraft paper coating process link, and the step of coating the surface-coating kraft paper and the step of heating the surface-coating kraft paper after mixing are separate operations, and the production process is time-consuming.

[0007] The present invention provides a surface-coated cardboard coating device based on a polymeric cationic retention and drainage aid and a process thereof, specifically comprising: a base; a support frame is fixedly connected to a top middle position of the base, an adjustment frame is fixedly connected to a top position of the support frame, a motor A is fixedly connected to a left position of the adjustment frame, a rotating shaft of the motor A is fixedly connected to a left position of an active roller, the active roller is located in a middle and lower position inside the adjustment frame, a right position of the active roller is rotatably connected to a left position above a heater, the inner position of the active roller is hollow in design, a lifting frame is slidably connected to an upper position inside the adjustment frame, a threaded hole is respectively provided at left and right positions on the top of the lifting frame, a pump body is fixedly connected to the left position of the lifting frame, a coating roller is rotatably connected to the pump body at the inner position of the lifting frame, a spray hole and a scraper are provided on the surface of the coating roller, a bolt is rotatably connected to a left and right position on the top of the adjustment frame, and the two bolts are respectively rotatably connected to the threaded holes on both sides of the top of the lifting frame.

[0008] Furthermore, an auxiliary frame is fixedly connected to the top left position of the base, a heater is fixedly connected to the top right position of the base, a driven roller A is rotatably connected to the internal front end position of the adjustment frame, and a driven roller B is rotatably connected to the internal rear end position of the adjustment frame. The driven roller A and the driven roller B are respectively located at the front and rear ends of the active roller.

[0009] Furthermore, the driven roller A, the driven roller B and the right side of the active roller are all socketed and meshed inside the belt member, a gear is provided on the right side of the active roller, and a gear is provided on the right side of the coating roller, and the gear position of the coating roller is meshed with the gear position of the active roller.

[0010] Furthermore, the top front end position of the base is fixedly connected to the limit frame, the left side position of the limit frame is fixedly connected to the motor B, the rotating shaft of the motor B is fixedly connected to the two-way rod, the threads on both sides of the two-way rod are symmetrically designed, the two-way rod is located inside the limit frame, and the lower inner position of the limit frame is rotatably connected to the rotating rod.

[0011] Furthermore, a limit plate is slidably connected to the left and right sides of the inner part of the limit frame, and a threaded hole is provided on the upper side of each limit plate, and the threaded holes of the two limit plates are symmetrically designed. The left and right sides of the two-way rod are respectively located in the threaded hole of a limit plate, and the side positions of the two limit plates are provided with a penetrating groove, and the rotating rod is located in the grooves of the two limit plates.

[0012] Furthermore, a mixing rack is provided at the top position of the auxiliary rack, a feeding pipe is provided at the upper left position of the mixing rack, a cover motor is provided at the upper inner position of the mixing rack, the bottom rotating shaft of the cover motor is fixedly connected to the reciprocating rack, the side front end position of the reciprocating rack is fixedly connected to the motor C, the rotating shaft of the motor C is fixedly connected to the C-shaped part, and the C-shaped part is located at the inner position of the reciprocating rack.

[0013] Furthermore, the inner lower position of the U-shaped part is rotatably connected to the upper position of the transmission arm, the bottom position of the transmission arm is rotatably connected to the upper position of the sliding flipping part, the middle upper position of the sliding flipping part is slidably connected to the inner lower position of the reciprocating frame, a circular flipping plate is provided at the middle position of the sliding flipping part, and the flipping plate of the sliding flipping part is provided with an L-shaped through groove, a motor D is provided at the inner lower position of the mixing frame, and the rotating shaft of the motor D is fixedly connected to the mixing fan blade, the mixing fan blade is located at the inner lower position of the mixing frame, and the lower position of the mixing frame is rotatably connected to the left side position of the coating roller.

[0014] The present invention discloses a process for coating a surface kraft paperboard based on a polymeric cationic retention and drainage aid, which is characterized by comprising the following steps:

[0015] 1) When mixing and preparing the polymeric cationic retention and drainage aid, first feed the raw materials into the internal position of the mixing rack through the feed pipe, then start the motor D to drive the mixing blades to rotate, and the mixing blades perform preliminary mixing on the raw materials inside the mixing rack;

[0016] 2) Inertia is easily generated during the mixing process of the mixing fan blades in the mixing rack. At this time, the motor C is started to drive the U-shaped member to rotate. Through the cooperation of the U-shaped member and the transmission arm, the sliding flip member slides back and forth below the reciprocating rack. The flip plate of the sliding flip member flips the polymeric cationic retention and drainage aid inside the mixing rack up and down, offsetting the mixing inertia of the polymeric cationic retention and drainage aid inside the mixing rack by the mixing fan blades. During this period, the L-shaped groove of the flip plate of the sliding flip member has a disturbing effect on the polymeric cationic retention and drainage aid inside the mixing rack, ensuring that the polymeric cationic retention and drainage aid is mixed more fully.

[0017] 3) When the cover motor is started to drive the reciprocating frame to rotate, the flip plate set by the sliding flip member at the bottom of the reciprocating frame rotates synchronously inside the mixing frame. If the sliding flip member and the mixing fan blade are adjusted to rotate in opposite directions, it can be ensured that the polymeric cationic retention and drainage aids are mixed in an irregular state on the upper and lower sides during the mixing and dispensing process, and are fully mixed.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Inertia is easily generated during the mixing process of the mixing fan blades inside the mixing rack. At this time, motor C is started to drive the U-shaped member to rotate. Through the cooperation of the U-shaped member and the transmission arm, the sliding flip member slides back and forth below the reciprocating rack. The flip plate of the sliding flip member flips the polymeric cationic retention and drainage aid inside the mixing rack up and down, offsetting the mixing inertia of the polymeric cationic retention and drainage aid inside the mixing rack by the mixing fan blades. During this period, the L-shaped groove of the flip plate of the sliding flip member has a disturbing effect on the polymeric cationic retention and drainage aid inside the mixing rack, ensuring that the polymeric cationic retention and drainage aid is mixed more thoroughly.

[0020] 2. When the cover motor is started to drive the reciprocating frame to rotate, the flip plate set by the sliding flip member at the bottom of the reciprocating frame rotates synchronously inside the mixing frame. If the sliding flip member and the mixing fan blade are adjusted to rotate in opposite directions, it can be ensured that the polymeric cationic retention and drainage aid are mixed in an irregular state on the upper and lower sides during the mixing and dispensing process, and are fully mixed.

[0021] 3. After starting motor A, it will drive the active roller to rotate. Through the meshing transmission between the active roller gear and the coating roller gear, the active roller and the coating roller respectively adhere to the two sides of the kraft paper. The polymeric cationic retention and drainage aid mixed in the mixing rack is transferred to the inside of the coating roller through the pump body. The coating roller spray hole then coats the surface of the opposite kraft paper. Combined with the scraper design of the coating roller, excess material is scraped off.

[0022] 4. Since the driven roller A, the driven roller B and the right side of the active roller are all engaged with each other in the internal position of the belt member, when the active roller rotates, the driven roller A and the driven roller B rotate synchronously with the active roller in the same direction. The driven roller A wipes and removes dust from the surface of the cardboard that has not undergone the coating process on the upper end of the driven roller B, and the driven roller B wipes excess material from the surface of the cardboard that has completed the coating process.

[0023] 5. Heat is transferred to the active roller through the heater. The temperature inside the active roller rises to heat the surface of the transferred linerboard, ensuring that the polymeric cationic retention and drainage aids are quickly adsorbed on the surface of the linerboard. This avoids the situation where the coating and heating steps of the linerboard are separated, thereby improving production efficiency.

[0024] 6. After the cowhide paperboard is wrapped around the rotating rod, start motor B to drive the bidirectional rod to rotate. By cooperating with the threads on both sides of the bidirectional rod and the threaded holes of the two opposing limit plates, the two limit plates will move oppositely and adjust to facilitate the centering of the cowhide paperboard wrapped around the rotating rod, and keep it centered when the cowhide paperboard is transported to the coating link. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0026] In the attached figure:

[0027] Figure 1 It shows a schematic diagram of the main structure of a surface kraft paper coating device according to an embodiment of the present invention;

[0028] Figure 2 It shows a schematic top view of the structure of a surface kraft paper coating device according to an embodiment of the present invention;

[0029] Figure 3 It shows a schematic side view of the structure of a coating device for surface kraft paper according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of a half-section side view of the structure of a surface kraft paper coating device according to an embodiment of the present invention is shown;

[0031] Figure 5 A schematic diagram of the overall top view of the base according to an embodiment of the present invention is shown;

[0032] Figure 6 It shows a schematic diagram of the overall left side structure of the base according to an embodiment of the present invention;

[0033] Figure 7 It shows a schematic diagram of the overall right side structure of the base according to an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of a half-section side view of the overall structure of a mixing rack according to an embodiment of the present invention is shown.

[0035] Reference numerals

[0036] 1. Base; 101. Support frame; 102. Auxiliary frame; 103. Heater; 104. Adjustment frame; 105. Motor A; 106. Active roller; 107. Driven roller A; 108. Driven roller B; 109. Belt; 110. Lifting frame; 111. Pump body; 112. Coating roller; 113. Bolt; 2. Limiting frame; 201. Motor B; 202. Bidirectional rod; 203. Limiting plate; 204. Rotating rod; 3. Mixing frame; 301. Feed pipe; 302. Cover motor; 303. Reciprocating frame; 304. Motor C; 305. U-shaped part; 306. Transmission arm; 307. Sliding flip part; 308. Motor D; 309. Mixing fan blade. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0038] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined in this manner in the embodiments of the present disclosure.

[0039] The terms "first", "second" and similar terms used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "one", "an" or "the" and similar terms do not indicate a quantitative limitation, but rather indicate the presence of at least one. Similarly, the terms "include" or "comprise" and similar terms mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present disclosure, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "couple", "fixed" and "attached" may refer to a direct connection between two elements or structures without other elements or structures between them, or may refer to an indirect connection between two elements or structures through an intermediate element or structure, unless otherwise expressly stated herein.

[0040] Example 1:

[0041] As attached Figure 1 To the attached Figure 8 As shown:

[0042] The present invention provides a surface-coating device for kraft paper based on a polymeric cationic retention and drainage aid and a process thereof, comprising: a base 1; a support frame 101 is fixedly connected to the top middle position of the base 1, an adjustment frame 104 is fixedly connected to the top position of the support frame 101, a motor A105 is fixedly connected to the left position of the adjustment frame 104, a rotating shaft of the motor A105 is fixedly connected to the left position of a driving roller 106, the driving roller 106 is located in the middle and lower position of the adjusting frame 104, the right side of the driving roller 106 is rotatably connected to the upper left position of a heater 103, the inner position of the driving roller 106 is hollow, the inner upper position of the adjusting frame 104 is slidably connected to a lifting frame 110, and the left and right sides of the top of the lifting frame 110 are fixedly connected to the left and right sides of the top of the lifting frame 110. A threaded hole is respectively provided at each position, and the left side position of the lifting frame 110 is fixedly connected to the pump body 111, and the internal position of the lifting frame 110 is rotatably connected to the coating roller 112, and the left side position of the coating roller 112 is rotatably connected to the pump body 111. The surface of the coating roller 112 is provided with a spray hole and a scraper, and the left and right sides of the top of the adjusting frame 104 are respectively rotatably connected to a bolt member 113, and the two bolt members 113 are respectively rotatably connected to the threaded holes on both sides of the top of the lifting frame 110. When the bolt members 113 are rotated respectively, the lifting height of the lifting frame 110 can be adjusted, so as to facilitate the adjustment of the distance between the coating roller 112 and the active roller 106, so that the gear of the active roller 106 is disengaged from the gear of the coating roller 112.

[0043] Among them, the auxiliary frame 102 is fixedly connected to the top left position of the base 1, the heater 103 is fixedly connected to the top right position of the base 1, the internal front end position of the adjustment frame 104 is rotatably connected to the driven roller A107, and the internal rear end position of the adjustment frame 104 is rotatably connected to the driven roller B108, and the driven roller A107 and the driven roller B108 are respectively located at the front and rear ends of the active roller 106.

[0044] Among them, the driven roller A107, the driven roller B108 and the right side position of the active roller 106 are all socketed and engaged in the internal position of the belt member 109, the right side position of the active roller 106 is provided with a gear, and the right side position of the coating roller 112 is provided with a gear, and the gear position of the coating roller 112 is engaged with the gear position of the active roller 106.

[0045] Among them, the top front end position of the base 1 is fixedly connected to the limiting frame 2, the left side position of the limiting frame 2 is fixedly connected to the motor B201, the rotating shaft of the motor B201 is fixedly connected to the two-way rod 202, the threads on both sides of the two-way rod 202 are symmetrically designed, the two-way rod 202 is located in the internal position of the limiting frame 2, and the internal lower position of the limiting frame 2 is rotatably connected to the rotating rod 204, and the left and right sides of the interior of the limiting frame 2 are respectively slidably connected to a limiting plate 203, each limiting plate 203 has a threaded hole at the upper side, and the threaded holes of the two limiting plates 203 are symmetrically designed, the left and right sides of the two-way rod 202 are respectively located in the threaded hole of a limiting plate 203, the side positions of the two limiting plates 203 are provided with a through groove, and the rotating rod 204 is located in the groove of the two limiting plates 203.

[0046] Among them, a mixing rack 3 is provided at the top position of the auxiliary rack 102, a feeding pipe 301 is provided at the upper left position of the mixing rack 3, a cover motor 302 is provided at the upper inner position of the mixing rack 3, the bottom rotating shaft of the cover motor 302 is fixedly connected to the reciprocating rack 303, the side front end position of the reciprocating rack 303 is fixedly connected to the motor C304, the rotating shaft of the motor C304 is fixedly connected to the C-shaped member 305, the C-shaped member 305 is located at the inner position of the reciprocating rack 303, the inner lower position of the C-shaped member 305 is rotatably connected to the upper position of the transmission arm 306, and the transmission arm 30 6 bottom position is rotatably connected to the upper position of the sliding flipping member 307, the middle upper position of the sliding flipping member 307 is slidably connected to the lower position inside the reciprocating frame 303, the middle position of the sliding flipping member 307 is provided with a circular flipping plate, and the flipping plate of the sliding flipping member 307 is provided with an L-shaped through groove, the lower position inside the mixing frame 3 is provided with a motor D308, the rotating shaft of the motor D308 is fixedly connected to the mixing blade 309, the mixing blade 309 is located at the lower position inside the mixing frame 3, and the lower position of the mixing frame 3 is rotatably connected to the left side of the coating roller 112.

[0047] When using:

[0048] When the polymeric cationic retention and drainage aid is mixed and formulated, the raw materials are first delivered to the internal position of the mixing rack 3 through the feed pipe 301, and then the motor D308 is started to drive the mixing blades 309 to rotate, and the mixing blades 309 perform a preliminary mixing process on the raw materials inside the mixing rack 3;

[0049] Inertia is easily generated during the process of mixing and blending the materials in the mixing rack 3 by the mixing blades 309. At this time, the motor C304 is started to drive the U-shaped member 305 to rotate. Through the cooperation between the U-shaped member 305 and the transmission arm 306, the sliding flipping member 307 slides back and forth below the reciprocating rack 303. The flipping plate of the sliding flipping member 307 flips the polymeric cationic retention and filtering aid in the mixing rack 3 up and down, offsetting the mixing inertia of the polymeric cationic retention and filtering aid in the mixing rack 3 by the mixing blades 309. During this period, the L-shaped groove of the flipping plate of the sliding flipping member 307 has a disturbing effect on the polymeric cationic retention and filtering aid in the mixing rack 3, ensuring that the polymeric cationic retention and filtering aid is mixed more fully.

[0050] When the cover motor 302 is started to drive the reciprocating frame 303 to rotate, the flip plate provided on the sliding flip member 307 below the reciprocating frame 303 rotates synchronously inside the mixing frame 3. If the sliding flip member 307 and the mixing fan 309 are adjusted to rotate in opposite directions, it can be ensured that the polymeric cationic retention and drainage aid are mixed in an irregular state on the upper and lower sides during the mixing and dispensing process and are fully mixed.

[0051] Example 2:

[0052] When the surface of the kraft paper needs to be coated, the paper is first wound around the upper end of the rotating rod 204, then wound from the position below the driven roller A107 to the position above the active roller 106, and then drawn out from the position below the driven roller B108, so that the surface of the kraft paper is drawn out in an S shape at the position between the rotating rod 204, the driven roller A107, the active roller 106 and the driven roller B108;

[0053] After starting the motor A105, the active roller 106 will be driven to rotate. Through the meshing transmission of the gears of the active roller 106 and the gears of the coating roller 112, the active roller 106 and the coating roller 112 are respectively attached to the two sides of the surface kraft paper. The polymeric cationic retention and drainage aid mixed inside the mixing frame 3 is coated and transferred to the inside of the coating roller 112 through the pump body 111. The coating roller 112 then sprays the surface of the opposite kraft paper through the spray hole. Combined with the scraper design of the coating roller 112, excess material is scraped off.

[0054] Since the driven roller A107, the driven roller B108 and the right side of the active roller 106 are all engaged with each other in the internal position of the belt member 109, when the active roller 106 rotates, the driven roller A107, the driven roller B108 and the active roller 106 rotate synchronously in the same direction. The driven roller A107 wipes and removes dust from the surface of the cowhide paper that has not undergone the coating process at the upper end of the driven roller B108, and the driven roller B108 wipes excess material from the surface of the cowhide paper that has completed the coating process.

[0055] Heat is transferred to the active roller 106 through the heater 103. The temperature inside the active roller 106 is increased to heat the surface of the linerboard transferred on the surface, ensuring that the polymeric cationic retention and drainage aids are quickly adsorbed on the surface of the linerboard. This avoids the situation where the linerboard coating step and the linerboard heating step are operated separately, thereby improving production efficiency.

[0056] Example 3:

[0057] After the cowhide paper is wrapped around the rotating rod 204, start the motor B201 to drive the bidirectional rod 202 to rotate. By cooperating with the threads on both sides of the bidirectional rod 202 and the threaded holes of the two opposing limit plates 203, the two limit plates 203 will move in opposite directions to adjust and facilitate the centering of the cowhide paper wrapped around the rotating rod 204, and keep it centered when the cowhide paper is transported to the coating link.

[0058] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A coating device for surface kraft paper based on a polymeric cationic retention and drainage aid, characterized in that: include: A base (1); a support frame (101) is fixedly connected to the middle position of the top of the base (1); an adjustment frame (104) is fixedly connected to the top position of the support frame (101); a motor A (105) is fixedly connected to the left position of the adjustment frame (104); a rotating shaft of the motor A (105) is fixedly connected to the left position of an active roller (106); the active roller (106) is located at the middle and lower position inside the adjustment frame (104); the right position of the active roller (106) is rotatably connected to the upper left position of the heater (103); the inner position of the active roller (106) is hollow in design; the upper position inside the adjustment frame (104) A lifting frame (110) is slidably connected, and a threaded hole is respectively provided at the left and right sides of the top of the lifting frame (110), and a pump body (111) is fixedly connected at the left side of the lifting frame (110), and a coating roller (112) is rotatably connected to the inner position of the lifting frame (110), and the left side of the coating roller (112) is rotatably connected to the pump body (111), and a spray hole and a scraper are provided on the surface of the coating roller (112), and a bolt member (113) is rotatably connected to the left and right sides of the top of the adjustment frame (104), and the two bolt members (113) are rotatably connected to the threaded holes on both sides of the top of the lifting frame (110); The auxiliary frame (102) is fixedly connected to the left side of the top of the base (1), the limiting frame (2) is fixedly connected to the front end of the top of the base (1), a mixing frame (3) is arranged at the top of the auxiliary frame (102), a feeding pipe (301) is arranged at the upper left side of the mixing frame (3), a cover motor (302) is arranged at the upper inner part of the mixing frame (3), the bottom rotating shaft of the cover motor (302) is fixedly connected to the reciprocating frame (303), the front end of the side of the reciprocating frame (303) is fixedly connected to the motor C (304), the rotating shaft of the motor C (304) is fixedly connected to the U-shaped piece (305), and the U-shaped piece (305) is located at the inner part of the reciprocating frame (303); The lower inner position of the C-shaped member (305) is rotatably connected to the upper position of the transmission arm (306), and the bottom position of the transmission arm (306) is rotatably connected to the upper position of the sliding flip member (307); The middle upper position of the sliding flipping member (307) is slidably connected to the inner lower position of the reciprocating frame (303), a circular flipping plate is arranged at the middle position of the sliding flipping member (307), and the flipping plate of the sliding flipping member (307) is provided with an L-shaped through groove; A motor D (308) is provided at a lower position inside the mixing rack (3); a mixing blade (309) is fixedly connected to the rotating shaft of the motor D (308); the mixing blade (309) is located at a lower position inside the mixing rack (3); and the lower position of the mixing rack (3) is rotationally connected to a left position of the coating roller (112).

2. The surface kraft paper coating device based on polymeric cationic retention and drainage aid according to claim 1, characterized in that: A heater (103) is fixedly connected to the top right side of the base (1); a driven roller A (107) is rotatably connected to the front end of the adjusting frame (104); a driven roller B (108) is rotatably connected to the rear end of the adjusting frame (104); the driven roller A (107) and the driven roller B (108) are respectively located at the front and rear ends of the active roller (106).

3. The surface kraft paper coating device based on polymeric cationic retention and drainage aid as claimed in claim 2, characterized in that: The right side positions of the driven roller A (107), the driven roller B (108) and the active roller (106) are all sleeved and meshed in the inner position of the belt member (109); the right side position of the active roller (106) is provided with a gear; the right side position of the coating roller (112) is provided with a gear; the gear position of the coating roller (112) meshes with the gear position of the active roller (106).

4. The coating device for surface kraft paper based on polymeric cationic retention and drainage aid according to claim 1, characterized in that: The left side of the limit frame (2) is fixedly connected to a motor B (201), the rotating shaft of the motor B (201) is fixedly connected to a bidirectional rod (202), the threads on both sides of the bidirectional rod (202) are symmetrically designed, the bidirectional rod (202) is located inside the limit frame (2), and the lower part inside the limit frame (2) is rotatably connected to a rotating rod (204).

5. The coating device for surface kraft paper based on polymeric cationic retention and drainage aid as claimed in claim 4, characterized in that: A limiting plate (203) is slidably connected to the left and right sides of the limiting frame (2), respectively. A threaded hole is provided on the upper side of each limiting plate (203), and the threaded holes of the two limiting plates (203) are symmetrically designed. The left and right sides of the bidirectional rod (202) are respectively located in the threaded hole of a limiting plate (203), and the side positions of the two limiting plates (203) are provided with a through groove, and the rotating rod (204) is located in the through grooves of the two limiting plates (203).

6. The process of the surface kraft paper coating device based on the polymeric cationic retention and drainage aid as described in claims 1-5, characterized in that: The following steps are involved: 1) When the polymeric cationic retention and drainage aid is mixed and prepared, the raw materials are first delivered to the inner position of the mixing rack (3) through the feed pipe (301), and then the motor D (308) is started to drive the mixing blade (309) to rotate, and the mixing blade (309) performs a preliminary mixing process on the raw materials inside the mixing rack (3); 2) In the process of mixing and blending the inside of the mixing rack (3) by the mixing blades (309), inertia is easily generated. At this time, the motor C (304) is started to drive the U-shaped member (305) to rotate. Through the cooperation of the U-shaped member (305) and the transmission arm (306), the sliding flipping member (307) slides back and forth at the lower position of the reciprocating rack (303). The flipping plate of the sliding flipping member (307) flips the polymeric cationic retention and filtering aid inside the mixing rack (3) up and down, offsetting the mixing inertia of the polymeric cationic retention and filtering aid inside the mixing rack (3) by the mixing blades (309). During this period, the L-shaped through groove of the flipping plate of the sliding flipping member (307) will have a disturbing effect on the polymeric cationic retention and filtering aid inside the mixing rack (3), ensuring that the polymeric cationic retention and filtering aid is mixed more fully; 3) When the cover plate motor (302) is started to drive the reciprocating frame (303) to rotate, the flip plate provided by the sliding flip member (307) below the reciprocating frame (303) rotates synchronously inside the mixing frame (3). If the sliding flip member (307) and the mixing fan blade (309) are adjusted to rotate in opposite directions, it can be ensured that the polymeric cationic retention and drainage aid is mixed in an irregular state on both sides during the mixing and preparation process, and is fully mixed.

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