A cellulose compound cationic starch device and its moisturizing and strengthening process

Abstract

The present invention provides a cellulose compounding cationic starch device and its wet-strengthening process, which relates to the field of paper towel production. The device comprises: a compounding and mixing tank; a connecting air path connected to the bottom of the compounding and mixing tank, the connecting air path being connected to an external air supply device; a compounding and mixing tank being clamped to the top of the left wall of the compounding and mixing tank; a motor being installed on the left wall of the bottom of the compounding and mixing tank; and a material discharge baffle being slidably connected to the front side of the bottom end face of the compounding and mixing tank. High-pressure gas in an outlet pipe is blown toward the bottom of the compounding and mixing tank through an outlet notch and a reflux hood. The gas lifts flocculent fibers settled at the bottom of the compounding and mixing tank, causing the flocculent fibers to float to the top of the liquid surface, thereby enhancing the adsorption between the cationic starch and the negatively charged fibers and filler, thereby improving the fine fiber retention rate and reducing energy consumption. This solves the problems of harm to the human body caused by the production of paper towels using chlorine-containing wet-strengthening agents, as well as low fixing efficiency, weak fiber bonding, easy papermaking end, and increased production energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of paper towel production, in particular to a cellulose compound cationic starch device and a moistening and strengthening process thereof. Background Art

[0002] In recent years, awareness of the impact of chlorine-containing wet-strength agents on human health and the environment has led to increasingly stringent controls on chemicals used in the production of high-end napkins. To ensure the sustainable development of napkin production, companies must improve their processes to comply with current regulatory requirements. Furthermore, chemical reagents must be developed in accordance with the regulatory requirements of relevant departments, and new products must be developed to meet increasingly stringent regulations. Therefore, the development of high-wet-strength napkin nanocrystalline cellulose / cationic starch enhancement technology can improve both dry and wet strength of napkins, while also containing no harmful ingredients and offering low cost.

[0003] Based on the above, the existing cellulose compound cationic starch device has the following shortcomings:

[0004] Nanocrystalline cellulose and cationic starch are mixed artificially, resulting in poor mixing uniformity due to uneven mixing, and powder attached to the edge of the barrel is difficult to contact, resulting in mixing dead corners. In the pulp pool, flocculent fibers tend to settle to the bottom of the pulp pool after combining, resulting in uneven mixing, poor fixation of fine fibers, and difficulty in papermaking. Moreover, when the charge density is controlled by cationic starch, the wetting effect of the cellulose compound cationic starch is not good due to inaccurate control of the amount of cationic starch.

[0005] In addition, the existing humidification process has the following shortcomings:

[0006] Chlorine-containing wet strength agents are used to fix the fibers in the pulp. Since the produced paper towels contain chlorine, a harmful component, long-term use of this product will cause unexpected harm to the human body. In addition, during the paper towel production process, the chlorine-containing wet strength agent is not very efficient in fixing the fibers in the pulp, resulting in weak fiber bonding, which is easy to break during the papermaking process. In addition, the fixation efficiency of fine fibers is even lower. In order to enable fine fibers to be fixed, production energy consumption will continue to increase. Summary of the Invention

[0007] The disclosed embodiments relate to a cellulose compound cationic starch device and its moisturizing and strengthening process, which uses a blowing fan blade in conjunction with an air outlet pipe and a reflux hood in a compound mixing tank to evenly disperse a water-soluble polymer high-grade napkin moisturizing and strengthening agent composed of nano-microcrystalline cellulose and cationic starch into the compound mixing tank. At the same time, high-pressure gas in the air outlet pipe is blown toward the bottom of the compound mixing tank through the air outlet notch and the reflux hood, and the flocculent fibers settled at the bottom of the compound mixing tank are blown up by the gas, causing the flocculent fibers to float to the top of the liquid surface, thereby improving the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the retention rate of fine fibers and reducing energy consumption.

[0008] The first aspect of the present disclosure provides a cellulose compound cationic starch device and a humidification and strengthening process thereof, specifically comprising: a compound mixing tank; the bottom of the compound mixing tank is connected to a connecting air path, the connecting air path is connected to an external air supply device, a compound mixing tank is clamped on the top of the left wall of the compound mixing tank, a motor is installed on the left wall of the compound mixing tank at the bottom of the compound mixing tank, a discharge baffle is slidably connected to the front side of the bottom end face of the compound mixing tank, the lower end of the left top of the compound mixing tank is rotatably connected to a connecting hanger, the left and right sides of the bottom of the connecting hanger are rotatably connected to two rotating rods, the bottom of the rotating rod is threadedly connected to a connecting rod, the bottom of the connecting rod is hinged to a mixing rod, the front and rear sides of the bottom of the connecting hanger are hinged to an articulated side rod, the bottom of the articulated side rod is hinged to a scraper, and the bottom of the scraper is in contact with the bottom of the inner wall of the compound mixing tank 4.

[0009] Furthermore, air outlet pipes are provided at the four corners of the bottom of the compound mixing tank, the bottom of the air outlet pipes are connected to the tops of the four ends of the X-shaped connecting air path, and long air outlet notches are opened at a medium distance on the outer side wall of the top of the air outlet pipes. A reflux cover is buckled on the top of the air outlet pipe, and the bottom of the reflux cover is five centimeters away from the bottom of the compound mixing tank.

[0010] Furthermore, a base is fixedly connected to the middle of the bottom of the left outer wall of the compound mixing tank, and an electric motor is fixedly installed on the right side of the top of the base. The right end of the driving shaft of the motor is connected to a blowing fan blade, and the blowing fan blade is rotatably connected to the left inner wall of the compound mixing tank. An inclined discharge pipe is connected through the middle of the top of the left wall of the compound mixing tank, and a connecting port is opened in the middle of the bottom of the compound mixing tank, and the connecting port is connected to the top of the left side of the discharge pipe.

[0011] Furthermore, a ring arm is fixedly connected to the left end of the top of the base on the left side of the compound mixing tank, a connecting shaft is fixedly connected to the lower side of the top of the ring arm, a fixed disk is provided in the middle of the connecting shaft, and a fixed gear is fixedly connected to the bottom of the connecting shaft. Two fixed cards are symmetrically provided on the left side of the bottom of the compound mixing tank, which are respectively clamped on the front and rear sides of the bottom of the ring arm of the compound mixing tank. A driving machine is fixedly installed on the right side of the top of the ring arm, and a driving gear is connected to the bottom of the driving shaft of the driving machine.

[0012] Furthermore, an adding tank is fixedly connected to the outer wall of the right front side of the compound mixing tank, and a discharge pipe is connected to the middle of the bottom of the adding tank. The bottom rear end of the discharge pipe is arranged on the right side of the discharge pipe of the compound mixing tank, and a regulating baffle is slidably connected between the top of the discharge pipe and the bottom end face of the compound mixing tank. A long strip of limiting plate is fixedly connected to the right side of the bottom of the compound mixing tank, and a guide rod is fixedly connected to the left side of the limiting plate and the middle of the right side of the connecting port of the compound mixing tank. A support spring is sleeved on the guide rod, and the rear end of the discharge baffle is slidably connected to the connecting port. The front side wall of the discharge baffle is connected to the rear end of the support spring, and a U-shaped pull rod is connected to the front side wall of the discharge baffle.

[0013] Furthermore, the top of the connecting hanger is circular and the bottom is square, and an inner limit groove is provided in the lower end surface of the circular top of the connecting hanger, and the inner limit groove is rotatably connected to the fixed plate of the connecting shaft on the lower side of the top end of the annular arm on the left side of the compound mixing tank, and an inner gear ring is provided in the top end surface of the connecting hanger, and the inner gear ring is engaged with the driving gear at the bottom of the driving machine on the right side of the top of the annular arm, and a vertical pole is provided in the middle of the bottom of the connecting hanger, and a spiral blade is connected to the bottom outer wall of the vertical pole, and hinged rods are symmetrically provided on the front and back sides of the circular bottom of the connecting hanger, and the bottom of the hinged rod is hinged with an hinged side rod.

[0014] Furthermore, a rotating gear is provided at the bottom of the rotating rod, which is meshed and connected to the fixed gear side of the bottom of the connecting shaft on the lower side of the top of the annular arm on the left side of the compound mixing tank. A threaded connector is provided at the bottom end of the rotating rod, and the top external thread of the connecting rod is connected to the threaded connector. The bottom of the connecting rod is hinged in the middle of the mixing rod, and the front and rear sides of the bottom of the mixing rod are staggered with arc-shaped mixing plates.

[0015] The present invention discloses a moistening and strengthening process for a cellulose compound cationic starch device, comprising the following steps:

[0016] 1. First, add nano-microcrystalline cellulose and cationic starch in proportion to the compound mixing tank, then start the driving motor. The driving motor drives the connecting hanger to rotate through the engagement of the driving gear and the internal gear ring. When the connecting hanger rotates, the rotating gear at the top of the rotating rod connected to the connecting hanger rotates in an inclined manner around the fixed gear. Under the engagement of the rotating gear and the fixed gear, the rotating rod rotates on its own and drives the mixing rod to rotate through the connecting rod. The mixing piece connected to the bottom of the mixing rod can stir the nano-microcrystalline cellulose and cationic starch in the compound mixing tank to fully mix the two materials.

[0017] 2. Simultaneously connect the hinged side rods and scraping blades at the bottom of the hinged rods on the front and rear sides of the hanger to scrape off the nano-crystalline cellulose and cationic starch in the dead corners of the compound mixing tank. The spiral blades connected to the bottom of the vertical rods of the hanger stir the nano-crystalline cellulose and cationic starch in the circular hole at the bottom of the compound mixing tank.

[0018] 3. Then, pull the discharge baffle forward through the pull rod to open the closed connecting material port. At the same time, the discharge speed of the connecting material port can be controlled. The discharge pipe connected to the bottom of the connecting material port can put the water-soluble polymer high-grade napkin paper moisturizing and strengthening agent into the compound mixing tank. At this time, the blowing fan blade connected to the right end of the motor drive shaft will blow the water-soluble polymer high-grade napkin paper moisturizing and strengthening agent composed of nano-microcrystalline cellulose and cationic starch discharged from the discharge pipe into the compound mixing tank;

[0019] 4. At the same time, cationic starch stored in the tank is added and fed into the compound mixing tank through the discharge pipe under the control of the regulating baffle, so as to regulate the bonding force between starch, fiber and filler in the liquid inside the compound mixing tank, thereby improving the dry and wet strength of the pulp and preventing paper breakage during the papermaking process;

[0020] 5. Then, the external air supply equipment is connected to the air outlet pipe through the connecting air path, so that the gas is blown from the reflux hood to the bottom of the compound mixing tank through the air outlet gap opened at the top of the air outlet pipe. The flocculent fibers settled at the bottom of the compound mixing tank are blown up by the gas, and the flocculent fibers float to the top of the liquid surface, so as to improve the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the fine fiber retention rate and reducing energy consumption.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Through the coordination of the blowing fan blades with the air outlet pipe and the reflux hood in the compound mixing tank, while the water-soluble polymer high-grade napkin paper moisturizing agent composed of nano-microcrystalline cellulose and cationic starch is evenly blown into the compound mixing tank, the high-pressure gas in the air outlet pipe is blown to the bottom of the compound mixing tank from the air outlet gap and the reflux hood, and the flocculent fibers settled at the bottom of the compound mixing tank are blown up by the gas, so that the flocculent fibers float to the top of the liquid surface, so as to improve the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the retention rate of fine fibers and reducing energy consumption.

[0023] 2. In addition, the feeding speed of the water-soluble polymer high-grade napkin paper moisturizing and strengthening agent in the compound mixing tank is controlled by the feeding baffle to coordinate with the feeding speed of the cationic starch in the adding tank, so as to regulate the bonding force between the starch, fiber and filler in the liquid inside the compound mixing tank. This improves the dry and wet strength of the pulp, prevents breakage during the papermaking process, speeds up water filtration, increases the speed of the paper machine, reduces the concentration of white water, reduces pollution, and reduces energy consumption.

[0024] 3. In addition, by using nano-microcrystalline cellulose compounded with cationic starch moisturizing and strengthening technology in the compound mixing tank, the nano-microcrystalline cellulose is selectively oxidized to generate aldehyde groups and then form aldehyde cellulose, which can act as a cross-linking agent by compounding with cationic starch. There is no need to add traditional cross-linking agents such as formaldehyde and glutaraldehyde, and it can be compounded into a new water-soluble polymer high-end napkin paper moisturizing and strengthening agent; then the charge density control technology is used in the compound mixing pool to control the amount of cationic starch added in the addition tank and the fixation efficiency of the pulp fiber in the compound mixing pool, thereby improving the wet strength effect of the nano-cellulose and cationic starch composite moisturizing and strengthening agent. 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] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0027] In the attached figure:

[0028] Figure 1 A schematic diagram of the right front axial structure of the present application is shown.

[0029] Figure 2 A schematic diagram of the structure of the present application is shown as seen from the left front side.

[0030] Figure 3 A schematic diagram of the overall split structure of this application is shown.

[0031] Figure 4 A schematic diagram of the cross-sectional structure of the composite mixing tank of the present application is shown.

[0032] Figure 5 Shown is a bottom view of the compound mixing tank of the present application and various structural schematic diagrams.

[0033] Figure 6 A schematic diagram of the cross-sectional structure of the compound mixing tank of the present application is shown.

[0034] Figure 7 A schematic diagram of the cross-section of the connecting hanger and the disassembled structure of the rotating rod, connecting rod and mixing rod of the present application is shown.

[0035] Figure 8 A schematic diagram of the cross-section of the connecting hanger of the present application and its connection structure with the connecting shaft is shown.

[0036] Reference Signs List

[0037] 1. Compound mixing tank; 101. Reflux hood; 102. Discharge pipe; 103. Base; 104. Ring arm; 105. Connecting shaft; 106. Fixed plate; 107. Fixed gear; 108. Exhaust pipe; 109. Exhaust notch; 2. Connecting air path; 3. Motor; 301. Blowing fan blade; 4. Compound mixing tank; 401. Adding tank; 402. Discharge pipe; 403. Fixed card; 404. Connecting port; 405. Limit plate; 406. Guide rod; 5. Regulating baffle; 6. Unloading baffle; 601. Pull rod; 7. Support spring; 8. Connecting hanger; 801. Inner gear ring; 802. Inner limit groove; 803. Vertical pole; 804. Spiral blade; 805. Articulated rod; 9. Driving motor; 901. Driving gear; 10. Rotating rod; 1001. Rotating gear; 1002. Threaded connector; 11. Connecting rod; 1101. External thread; 12. Mixing rod; 1201. Mixing plate; 13. Articulated side rod; 14. Scraping plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, scheme and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the common meanings in the art. The same reference numerals in the drawings represent the same components.

[0039] Example 1: Please refer to Figures 1 to 8 As shown:

[0040] The present invention provides a cellulose compound cationic starch device and a humidification and strengthening process thereof, comprising a compound mixing pool 1; a communicating air path 2 is connected to the bottom of the compound mixing pool 1, the communicating air path 2 is connected to an external air supply device, a compound mixing tank 4 is clamped on the top of the left wall of the compound mixing pool 1, a motor 3 is installed on the left wall of the compound mixing pool 1 at the bottom of the compound mixing tank 4, a discharge baffle 6 is slidably connected to the front side of the bottom end face of the compound mixing tank 4, a connecting hanger 8 is rotatably connected to the lower end of the left top of the compound mixing pool 1, two rotating rods 10 are rotatably connected to the left and right sides of the bottom of the connecting hanger 8 in an inclined manner, the bottom of the rotating rod 10 is threadedly connected to a connecting rod 11, the bottom of the connecting rod 11 is hinged to a mixing rod 12, the front and rear sides of the bottom of the connecting hanger 8 are hinged to an articulated side rod 13, the bottom of the articulated side rod 13 is hinged to a scraper 14, and the bottom of the scraper 14 is in contact with the bottom of the inner wall of the compound mixing tank 4.

[0041] Among them, air outlet pipes 108 are provided at the four corners of the bottom of the compound mixing tank 1, the bottom of the air outlet pipe 108 is connected to the top of the four ends of the X-shaped connecting air path 2, and a long air outlet notch 109 is opened at a medium distance on the top outer wall of the air outlet pipe 108. The top of the air outlet pipe 108 is buckled with a reflux cover 101, and the bottom of the reflux cover 101 is five centimeters away from the bottom of the compound mixing tank 1.

[0042] Among them, a base 103 is fixedly connected to the middle of the bottom of the left outer wall of the compound mixing tank 1, and a motor 3 is fixedly installed on the top right side of the base 103. The right end of the driving shaft of the motor 3 is connected to the blowing fan blade 301, and the blowing fan blade 301 is rotatably connected to the left inner wall of the compound mixing tank 1. An inclined discharge pipe 102 is connected through the middle of the top of the left wall of the compound mixing tank 1, and a connecting port 404 is opened in the middle of the bottom of the compound mixing tank 4, and the connecting port 404 is connected to the top left side of the discharge pipe 102.

[0043] Among them, the left end of the top of the base 103 on the left side of the compound mixing tank 1 is fixedly connected to a ring arm 104, the lower side of the top of the ring arm 104 is fixedly connected to a connecting shaft 105, a fixed disk 106 is provided in the middle of the connecting shaft 105, and the bottom of the connecting shaft 105 is fixedly connected to a fixed gear 107. Two fixed cards 403 are symmetrically arranged on the left side of the bottom of the compound mixing tank 4, which are respectively clamped on the front and back sides of the bottom of the ring arm 104 of the compound mixing tank 1. A driving machine 9 is fixedly installed on the right side of the top of the ring arm 104, and a driving gear 901 is connected to the bottom of the driving shaft of the driving machine 9.

[0044] By adopting the above technical solution, the water-soluble polymer high-grade napkin paper moistening agent composed of nano-microcrystalline cellulose and cationic starch discharged from the discharge pipe 102 is blown into the compound mixing tank 1 through the blowing fan blade 301 connected to the right end of the motor 3 driving shaft, so that the water-soluble polymer high-grade napkin paper moistening agent is fully and evenly scattered into the compound mixing tank 1, and the air outlet pipe 108 provided in the compound mixing tank 1 is connected to the connecting air path 2 so that the air outlet pipe 108 can be inflated through the external air supply equipment. The gas is blown from the reflux hood 101 to the bottom of the compounding and mixing tank 1 through the gas outlet notch 109 opened at the top of the gas outlet pipe 108, so that when producing paper towels, the flocculent fibers settled at the bottom of the compounding and mixing tank 1 are blown up by the gas, and the flocculent fibers float to the top of the liquid surface, so as to improve the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the retention rate of fine fibers, reducing energy consumption, enhancing the wet strength effect of the nanocellulose and cationic starch composite moisturizing agent, and improving the problems caused by anionic garbage in the wet part.

[0045] Example 2:

[0046] Based on a cellulose compound cationic starch device and its moisturizing and strengthening process provided in Example 1, Figure 5-Figure 6 As shown, an adding tank 401 is fixedly connected to the outer wall of the right front side of the compound mixing tank 4, and a discharge pipe 402 is connected to the middle of the bottom of the adding tank 401. The bottom rear end of the discharge pipe 402 is arranged on the right side of the discharge pipe 102 of the compound mixing pool 1, and a regulating baffle 5 is slidably connected between the top of the discharge pipe 402 and the bottom end face of the compound mixing tank 4. A long strip of limiting plate 405 is fixedly connected to the right side of the bottom of the compound mixing tank 4, and a guide rod 406 is fixedly connected to the left side of the limiting plate 405 and the middle of the right side of the connecting port 404 of the compound mixing tank 4. A support spring 7 is sleeved on the guide rod 406, and the rear end of the discharge baffle 6 is slidably connected to the connecting port 404. The front side wall of the discharge baffle 6 is connected to the rear end of the support spring 7, and a U-shaped pull rod 601 is connected to the front side wall of the discharge baffle 6.

[0047] By adopting the above technical solution, a water-soluble polymer high-grade napkin paper moisturizing and strengthening agent is generated by mixing powdered nano-microcrystalline cellulose and cationic starch in a fixed ratio in a compound mixing tank 4. The discharge baffle 6 is pulled forward by the pull rod 601, and the front side wall of the discharge baffle 6 compresses the support spring 7, opening the closed connecting port 404. At the same time, the discharge speed of the connecting port 404 can be controlled. The discharge pipe 102 connected to the bottom of the connecting port 404 can discharge the water-soluble polymer high-grade napkin paper moisturizing and strengthening agent into the compound mixing tank 1 for papermaking. The cationic starch stored in the addition tank 401 can be controlled by the control baffle 5 slidingly connected to the top of the discharge pipe 402 at a controlled discharge speed, so as to regulate the bonding force between starch, fiber and filler in the liquid inside the compound mixing tank 1. This improves the dry and wet strength of the pulp, prevents end breakage during papermaking, speeds up water filtration, increases the speed of the paper machine, reduces the concentration of white water, reduces pollution, and reduces energy consumption.

[0048] Example 3:

[0049] Based on a cellulose compound cationic starch device and its moisturizing and strengthening process provided in Example 1, Figure 6-Figure 8 As shown, the top of the connecting hanger 8 is circular and the bottom is square, and an inner limit groove 802 is provided in the lower end surface of the circular top of the connecting hanger 8, and the inner limit groove 802 is rotatably connected to the fixed plate 106 of the connecting shaft 105 on the lower side of the top of the annular arm 104 on the left side of the compound mixing tank 1, and an inner gear ring 801 is provided in the top end surface of the connecting hanger 8, and the inner gear ring 801 is engaged with the driving gear 901 at the bottom of the driving machine 9 on the right side of the top of the annular arm 104, and a vertical pole 803 is provided in the middle of the bottom of the connecting hanger 8, and a spiral blade 804 is connected to the bottom outer wall of the vertical pole 803, and hinged rods 805 are symmetrically provided on the front and back sides of the circular bottom of the connecting hanger 8, and the bottom of the hinged rod 805 is hinged with an hinged side rod 13.

[0050] Among them, a rotating gear 1001 is provided at the bottom of the rotating rod 10, and the rotating gear 1001 is meshed and connected to the side of the fixed gear 107 at the bottom of the connecting shaft 105 on the lower side of the top of the annular arm 104 on the left side of the compound mixing tank 1. The bottom end of the rotating rod 10 is provided with a threaded connector 1002, and the top external thread 1101 of the connecting rod 11 is connected to the threaded connector 1002. The bottom of the connecting rod 11 is hinged to the middle of the mixing rod 12, and the front and rear sides of the bottom of the mixing rod 12 are staggered drill rods with arc-shaped mixing pieces 1201.

[0051] By adopting the above technical solution, the rotation of the connecting hanger 8 can be controlled by the driving machine 9 through the engagement of the driving gear 901 at the bottom of the driving machine 9 and the inner gear ring 801 in the top end face of the connecting hanger 8. When the connecting hanger 8 rotates, the rotating gear 1001 at the top of the rotating rod 10 connected to the connecting hanger 8 rotates in an inclined state, and the rotating gear 1001 and the fixed gear 107 are engaged, so that the rotating rod 10 can rotate on its own, and the rotating rod 10 drives the mixing rod 12 to rotate through the connecting rod 11, and the bottom of the mixing rod 12 is rotated. The connected mixing sheet 1201 can stir the nano-crystalline cellulose and cationic starch in the compound mixing tank 4 to fully mix the two materials. When the connecting hanger 8 rotates, the spiral blade 804 connected to the bottom of the vertical rod 803 stirs the nano-crystalline cellulose and cationic starch in the circular hole at the bottom of the compound mixing tank 4 and completes the downward transportation of the nano-crystalline cellulose and cationic starch. The articulated side rods 13 and the scraping sheet 14 at the bottom of the articulated rods 805 on the front and rear sides of the connecting hanger 8 scrape the nano-crystalline cellulose and cationic starch in the dead corners of the compound mixing tank 4.

[0052] The present invention discloses a moistening and strengthening process for a cellulose compound cationic starch device, comprising the following steps:

[0053] 1. First, the nano-microcrystalline cellulose and cationic starch are added to the compound mixing tank 4 in proportion, and then the driving machine 9 is started. The driving machine 9 drives the connecting hanger 8 to rotate through the engagement of the driving gear 901 and the inner gear ring 801. When the connecting hanger 8 rotates, the rotating gear 1001 on the top of the rotating rod 10 connected to the connecting hanger 8 rotates in an oblique manner around the fixed gear 107. Under the engagement of the rotating gear 1001 and the fixed gear 107, the rotating rod 10 rotates on its own and drives the mixing rod 12 to rotate through the connecting rod 11. The mixing piece 1201 connected to the bottom of the mixing rod 12 can stir the nano-microcrystalline cellulose and cationic starch in the compound mixing tank 4 to fully mix the two materials;

[0054] 2. Simultaneously, the hinged side rods 13 and scraping blades 14 connected to the bottom of the hinged rods 805 on the front and rear sides of the hanger 8 scrape off the nanocrystalline cellulose and cationic starch in the dead corners of the compound mixing tank 4. The spiral blades 804 connected to the bottom of the vertical rod 803 connected to the hanger 8 stir the nanocrystalline cellulose and cationic starch in the circular hole at the bottom of the compound mixing tank 4.

[0055] 3. Then, the discharge baffle 6 is pulled forward by the pull rod 601 to open the closed connecting port 404. At the same time, the discharge speed of the connecting port 404 can be controlled. The discharge pipe 102 connected to the bottom of the connecting port 404 can then discharge the water-soluble polymer high-grade napkin paper moisturizing agent into the compound mixing tank 1. At this time, the blowing blade 301 connected to the right end of the driving shaft of the motor 3 blows the water-soluble polymer high-grade napkin paper moisturizing agent composed of nano-microcrystalline cellulose and cationic starch discharged from the discharge pipe 102 into the compound mixing tank 1;

[0056] 4. At the same time, cationic starch stored in tank 401 is added and fed into the compound mixing tank 1 through the discharge pipe 402 under the control of the regulating baffle 5. This is to regulate the bonding force between the starch, fiber and filler in the liquid inside the compound mixing tank 1, thereby improving the dry and wet strength of the pulp and preventing breakage during the papermaking process;

[0057] 5. Then, the external air supply equipment is connected to the air outlet pipe 108 through the connecting air path 2, so that the gas is blown from the reflux cover 101 to the bottom of the compound mixing tank 1 through the air outlet gap 109 opened at the top of the air outlet pipe 108. The flocculent fibers settled at the bottom of the compound mixing tank 1 are blown up by the gas, so that the flocculent fibers float to the top of the liquid surface, so as to improve the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the fine fiber retention rate and reducing energy consumption.

[0058] The specific usage and function of this embodiment are as follows: first, nano-microcrystalline cellulose and cationic starch are added to the compound mixing tank 4 in proportion, and then the driving machine 9 is started. The driving gear 901 at the bottom of the driving machine 9 is engaged with the inner gear ring 801 in the top end face of the connecting hanger 8 to drive the connecting hanger 8 to rotate. When the connecting hanger 8 rotates, the rotating gear 1001 at the top of the rotating rod 10 connected to the connecting hanger 8 rotates around the fixed gear 107. In the meshing state of the rotating gear 1001 and the fixed gear 107, the rotating rod 10 can rotate on its own, and the rotating rod 10 is connected to the connecting hanger 8. The rod 11 drives the mixing rod 12 to rotate, and the mixing piece 1201 connected to the bottom of the mixing rod 12 can stir the nano-microcrystalline cellulose and cationic starch in the compound mixing tank 4 to fully mix the two materials. At the same time, the hinged side rods 13 and the scraping pieces 14 connected to the bottom of the hinged rods 805 on the front and rear sides of the hanger 8 scrape the nano-microcrystalline cellulose and cationic starch in the dead corners of the compound mixing tank 4. The spiral blades 804 connected to the bottom of the vertical rod 803 connected to the hanger 8 stir the nano-microcrystalline cellulose and cationic starch in the circular hole at the bottom of the compound mixing tank 4, and then pull the unloading baffle 6 forward through the pull rod 601. The closed connecting material port 404 is opened, and the discharge speed of the connecting material port 404 can be controlled at the same time. The discharge pipe 102 connected to the bottom of the connecting material port 404 can put the water-soluble polymer high-grade napkin paper moisturizing agent into the compound mixing tank 1. At this time, the blowing fan blade 301 connected to the right end of the motor 3 driving shaft will blow the water-soluble polymer high-grade napkin paper moisturizing agent composed of nano-microcrystalline cellulose and cationic starch discharged from the discharge pipe 102 into the compound mixing tank 1. At the same time, the cationic starch stored in the adding tank 401 is put into the compound mixing tank through the discharge pipe 402 under the control of the regulating baffle 5. 1, in order to regulate the bonding force between starch, fiber and filler in the liquid inside the compound mixing tank 1, thereby improving the dry and wet strength of the pulp and preventing papermaking from breaking during the papermaking process, and then connect the external air supply equipment and the air outlet pipe 108 through the connecting air path 2, so that the gas is blown from the reflux hood 101 to the bottom of the compound mixing tank 1 through the air outlet gap 109 opened at the top of the air outlet pipe 108, and the flocculent fibers settled at the bottom of the compound mixing tank 1 are blown up by the gas, so that the flocculent fibers float to the top of the liquid surface, so as to improve the adsorption effect between the cationic starch and the negatively charged fibers and filler, thereby improving the retention rate of fine fibers and reducing energy consumption.

[0059] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A cellulose compound cationic starch device, characterized in that: include: The compound mixing tank; the bottom of the compound mixing tank is connected with a connecting air path, which is connected to an external air supply device, and a compound mixing tank is clamped on the top of the left wall of the compound mixing tank, and a motor is installed on the left wall of the compound mixing tank at the bottom of the compound mixing tank. The front side of the bottom end face of the compound mixing tank is slidingly connected with a discharge baffle, and the lower end of the left top of the compound mixing tank is rotatably connected to a connecting hanger, and the left and right sides of the bottom of the connecting hanger are rotatably connected to two rotating rods, and the bottom of the rotating rod is threadedly connected to a connecting rod, and the bottom of the connecting rod is hinged to a mixing rod, and the front and rear sides of the bottom of the connecting hanger are hinged with articulated side rods, and the bottom of the articulated side rod is hinged with a scraper, and the bottom of the scraper and the bottom of the inner wall of the compound mixing tank are hinged. The bottom of the compound mixing tank is in contact with each other; outlet pipes are provided at the four corners of the bottom of the compound mixing tank, the bottom of the outlet pipe is connected to the top of the four ends of the X-shaped connecting air path, a long strip of air outlet notch is opened at a middle distance on the outer wall of the top of the outlet pipe, and a backflow cover is buckled on the top of the outlet pipe, and the bottom of the backflow cover is five centimeters away from the bottom of the compound mixing tank; a base is fixedly connected to the middle of the bottom of the left outer wall of the compound mixing tank, and a motor is fixedly installed on the right side of the top of the base, and the right end of the driving shaft of the motor is connected to a blowing fan blade, which is rotatably connected to the left inner wall of the compound mixing tank, and an inclined discharge pipe is connected to the middle of the top of the left wall of the compound mixing tank, and a connecting port is opened in the middle of the bottom of the compound mixing tank. The top of the annular arm is fixedly installed with a driving machine, and the bottom of the driving shaft of the driving machine is connected to the driving gear; the top of the connecting hanger is round, and the bottom is square, and an inner limiting groove is provided in the lower end surface of the circular top of the connecting hanger, which is rotatably connected to the fixed disk of the connecting shaft on the lower side of the top of the annular arm on the left side of the compound mixing tank. An inner gear ring is provided in the top end face of the connecting hanger, and the inner gear ring is meshed with the driving gear at the bottom of the driving machine on the right side of the top of the annular arm. A vertical pole is provided at the middle of the bottom of the connecting hanger, and a spiral blade is connected to the bottom outer wall of the vertical pole. Articulated rods are symmetrically provided on the front and back sides of the circular bottom of the connecting hanger, and the bottom of the articulated rod is hinged with an articulated side rod; a rotating gear is provided at the bottom of the rotating rod, and the rotating gear is meshed and connected to the fixed gear side of the bottom of the connecting shaft on the lower side of the top of the annular arm on the left side of the compound mixing tank. A threaded connector is provided at the bottom end of the rotating rod, and the top external thread of the connecting rod is connected to the threaded connector. The bottom of the connecting rod is hinged at the middle of the mixing rod, and the front and back sides of the bottom of the mixing rod are staggered with arc-shaped mixing pieces.

2. A cellulose compound cationic starch device according to claim 1, characterized in that: An adding tank is fixedly connected to the outer wall of the right front side of the compound mixing tank, and a discharge pipe is connected to the middle of the bottom of the adding tank. The bottom rear end of the discharge pipe is arranged on the right side of the discharge pipe of the compound mixing tank, and a regulating baffle is slidably connected between the top of the discharge pipe and the bottom end face of the adding tank. A long strip of limiting plate is fixedly connected to the right side of the bottom of the compound mixing tank, and a guide rod is fixedly connected to the left side of the limiting plate and the middle of the right side of the connecting port of the compound mixing tank. A support spring is sleeved on the guide rod, and the rear end of the discharge baffle is slidably connected to the connecting port. The front side wall of the discharge baffle is connected to the rear end of the support spring, and a U-shaped pull rod is connected to the front side wall of the discharge baffle.

3. A moistening and strengthening process for a cellulose compound cationic starch device as claimed in claim 1 or 2, characterized in that: The following steps are involved: 1) First, nanocrystalline cellulose and cationic starch are added to the compound mixing tank in proportion. Then, the driving motor is started. The driving motor drives the connecting hanger to rotate through the meshing of the driving gear and the internal gear ring. When the connecting hanger rotates, the rotating gear at the top of the rotating rod connected to the connecting hanger rotates in an inclined manner, and then rotates around the fixed gear. Under the meshing of the rotating gear and the fixed gear, the rotating rod rotates on its own and drives the mixing rod to rotate through the connecting rod. The mixing blade connected to the bottom of the mixing rod can stir the nanocrystalline cellulose and cationic starch in the compound mixing tank to fully mix the two materials. 2) Simultaneously, the articulated side rods and scraping blades at the bottom of the articulated rods on the front and rear sides of the hanger scrape off the nano-crystalline cellulose and cationic starch in the dead corners of the compound mixing tank. The spiral blades connected to the bottom of the vertical rods of the hanger stir the nano-crystalline cellulose and cationic starch in the circular hole at the bottom of the compound mixing tank. 3) Then, the discharge baffle is pulled forward by the pull rod to open the closed connecting material port. The discharge speed of the connecting material port can be controlled at the same time. The discharge pipe connected to the bottom of the connecting material port can release the water-soluble polymer napkin paper moisturizing and strengthening agent into the compound mixing tank. At this time, the blowing blade connected to the right end of the motor drive shaft will blow the water-soluble polymer napkin paper moisturizing and strengthening agent composed of nano-microcrystalline cellulose and cationic starch discharged from the discharge pipe into the compound mixing tank. 4) At the same time, cationic starch stored in the tank is added and fed into the compound mixing tank through the discharge pipe under the control of the regulating baffle. This is to regulate the bonding force between the starch, fiber and filler in the liquid inside the compound mixing tank, thereby improving the dry and wet strength of the pulp and preventing paper breakage during the papermaking process; 5). Then, the external air supply equipment is connected to the air outlet pipe through the connecting air path, so that the gas is blown from the reflux hood to the bottom of the compound mixing tank through the air outlet gap opened at the top of the air outlet pipe. The flocculent fibers settled at the bottom of the compound mixing tank are blown up by the gas, so that the flocculent fibers float to the top of the liquid surface, so as to enhance the adsorption between the cationic starch and the negatively charged fibers and filler, thereby improving the fine fiber retention rate and reducing energy consumption.

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