Papermaking dye adding and synthesizing system
By introducing a synthesis tank, metering pump, and stirring mechanism into the papermaking process, and utilizing the combined motion of a rotating tube and a reciprocating screw, the problem of uneven dyeing caused by solid dye deposition was solved, achieving uniform dye mixing and uniform paper dyeing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN JINGXIN BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-05-19
AI Technical Summary
In traditional papermaking processes, solid dye particles tend to settle at the bottom of the mixing tank, resulting in uneven dye concentration distribution and causing dyeing defects such as color difference and color spots on the paper.
A paper dye addition and synthesis system is adopted, including a synthesis tank, a metering pump, a stirring mechanism and a connecting pipe. The rotating tube is driven by a drive motor, and the reciprocating motion of the reciprocating screw and piston is combined to achieve three-dimensional circulation mixing and ensure uniform dye distribution.
It effectively solves the problem of dye deposition, ensures that the dye is fully dissolved and mixed, avoids color difference in paper, and achieves a uniform distribution of dye concentration.
Smart Images
Figure CN224252651U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking technology, specifically to a papermaking dye addition and synthesis system. Background Technology
[0002] The core principle of in-pulp dyeing lies in utilizing the continuous flow characteristics of the pulp conveying system to achieve efficient mixing of dye and pulp in the pipeline. The dye is usually injected directly into the pulp pipe through the connecting pipeline with precise flow control by a metering pump. During the conveying process, the dye molecules come into full contact with the pulp fibers and complete the coloring through adsorption, diffusion and other effects.
[0003] In the process of adding dyes in papermaking, traditional processes have the problem that solid dye particles tend to settle at the bottom of the mixing tank, resulting in uneven dye concentration distribution. This sedimentation phenomenon prevents the dye from being fully dissolved and mixed, ultimately causing dyeing defects such as color difference and color spots on the paper.
[0004] Therefore, it is necessary to propose a paper dye addition synthesis system to solve the above problems. Utility Model Content
[0005] Technical problem to be solved: The purpose of this utility model is to provide a paper dye addition and synthesis system to solve the problem mentioned in the background art that solid dye particles are easy to deposit at the bottom of the stirring tank in the existing papermaking process, resulting in uneven dye concentration distribution. This deposition phenomenon makes it impossible for the dye to be fully dissolved and mixed, ultimately causing dyeing defects such as color difference and color spots in the paper.
[0006] Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: A paper dye addition synthesis system includes a synthesis tank, a metering pump, and a connecting pipe connected to a pulp pipe. It also includes a stirring mechanism. The input end of the metering pump is connected to the bottom of the synthesis tank, and the output end is connected to the connecting pipe. The stirring mechanism includes a drive motor fixedly installed on the top of the synthesis tank, a fixed cylinder fixedly installed on the bottom surface inside the synthesis tank, and a connecting cylinder rotatably mounted on the upper part of the fixed cylinder. The top of the connecting cylinder is sealed and fixedly installed with a rotating pipe communicating with its interior. A stirring blade is fixedly mounted in the middle of the rotating pipe, and the top of the rotating pipe is sealed and connected to the drive motor. The upper part of the rotating pipe is vertically aligned with the stirring blade. Multiple drain ports are spaced apart; multiple water inlets are evenly distributed around the bottom of the fixed cylinder; a reciprocating screw is concentrically mounted inside the fixed cylinder, and a reciprocating nut is threaded onto the reciprocating screw; a sleeve with sealed ends is fixedly mounted on the outside of the reciprocating nut; a piston is concentrically mounted at the bottom of the sleeve, and multiple through holes are opened on the piston, with one-way valves installed in the through holes; the outer ring surface of the piston abuts against the inner wall of the fixed cylinder; the upper end of the reciprocating screw passes through the sleeve and is rotatably connected to the connecting cylinder; the lower end of the reciprocating screw passes through the piston and is fixedly connected to the synthesis tank; multiple sliding grooves are evenly distributed around the inner side wall of the connecting cylinder, and sliders are slidably mounted in the sliding grooves; the other ends of the multiple sliders are fixedly connected to the sleeve.
[0007] Preferably, the synthesis tank includes a tank body, the top of the tank body is provided with a feeding port and a water inlet pipe, a cover plate is hinged inside the feeding port, and a discharge pipe communicating with the inside of the tank body is fixedly installed at the bottom of the tank body, the other end of the discharge pipe is connected to the input end of the metering pump.
[0008] Preferably, flanges are fixedly fitted at adjacent ends of the rotating tube and the connecting cylinder, the two flanges are bolted together, a support frame is fixedly installed inside the connecting cylinder, and the reciprocating screw is rotatably connected to the support frame.
[0009] Preferably, an annular platform is fixedly fitted on the inner side of the top end of the fixed cylinder, and a connecting ring is fixedly fitted on the outer side of the bottom end of the connecting cylinder. A bearing is fitted in the enclosed area between the annular platform and the connecting ring. The connecting cylinder and the fixed cylinder are rotatably connected by the bearing, and sealing rings are provided on both the upper and lower sides of the bearing.
[0010] Preferably, the outer wall of the tank is provided with an observation window, which is made of tempered glass.
[0011] Beneficial Effects: Compared with existing technologies, this utility model provides a papermaking dye addition and synthesis system. This system has a unique structure and is easy to use. When the drive motor starts, the rotating tube drives the stirring blades to rotate, initially stirring the dye in the tank. At the same time, the rotating tube drives the reciprocating screw to rotate through the connecting cylinder, causing the reciprocating nut of the threaded sleeve to drive the sleeve and piston to move up and down. When the piston moves downward, the dye at the bottom of the tank is pressurized and pushes open the one-way valve to enter the space above the piston; when the piston moves upward, the one-way valve closes, creating a negative pressure. At this time, the dye at the top re-enters the stirring area through the drain port on the rotating tube. This reciprocating motion continuously pumps the solid dye particles deposited at the bottom of the tank to the stirring area, forming a three-dimensional circulating mixing effect in conjunction with the rotation of the stirring blades.
[0012] This solution addresses the issue of dye deposition by constructing a dynamic mixing mechanism through a mechanical circulation system, thereby achieving a more uniform dye concentration distribution. On the other hand, it uses physical methods to lift the bottom deposits to the stirring zone, ensuring that the dye particles are fully dissolved and preventing color differences in the paper. Attached Figure Description
[0013] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a cross-sectional schematic diagram of the structure of this utility model;
[0015] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure in area A.
[0016] In the diagram: 1. Synthesis tank; 11. Tank body; 12. Feed port; 13. Cover plate; 14. Water inlet pipe; 15. Discharge pipe; 16. Observation window; 2. Stirring mechanism; 21. Drive motor; 22. Rotating pipe; 23. Drain port; 24. Fixed cylinder; 25. Ring platform; 26. Connecting ring; 27. Connecting cylinder; 28. Flange; 29. Sealing ring; 210. Water inlet; 211. Reciprocating screw; 212. Piston; 213. Check valve; 214. Reciprocating nut; 215. Sleeve; 216. Support frame; 217. Slider; 218. Stirring blade; 3. Metering pump; 4. Connecting pipe. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Example 1: This Example 1 provides a paper dye addition synthesis system with a unique structure. Please refer to [link / reference]. Figure 1-3As shown, the system includes a synthesis tank 1, a metering pump 3, and a connecting pipe 4 connected to the slurry pipe. It also includes a stirring mechanism 2. The input end of the metering pump 3 is connected to the bottom of the synthesis tank 1, and its output end is connected to the connecting pipe 4. The synthesis tank 1 includes a tank body 11. The top of the tank body 11 has a feeding port 12 and a water inlet pipe 14. A cover plate 13 is hinged inside the feeding port 12. A discharge pipe 15, communicating with the interior of the tank body 11, is fixedly installed at the bottom of the tank body 11. The other end of the discharge pipe 15 is connected to the input end of the metering pump 3. The stirring mechanism 2 includes a drive motor 21 fixedly installed on the top of the synthesis tank 1, a fixed cylinder 24 fixedly installed on the bottom surface inside the synthesis tank 1, and a rotating sleeve. A connecting cylinder 27 is installed on the upper part of the fixed cylinder 24, and the top of the connecting cylinder 27 is sealed and fixedly installed with a rotating pipe 22 communicating with its interior. There are various ways to connect the rotating pipe 22 and the connecting cylinder 27. For example, flanges 28 are fixedly fitted on the adjacent ends of the rotating pipe 22 and the connecting cylinder 27, and the two flanges 28 are bolted together. A support frame 216 is fixedly installed inside the connecting cylinder 27. A reciprocating screw 211 is rotatably connected to the support frame 216. The support frame 216 includes a collar rotatably fitted on the reciprocating screw 211. Connecting rods are evenly fixedly installed on the outer side of the collar along the circumference. The other ends of the multiple connecting rods are fixedly connected to the connecting cylinder 27.
[0019] There are multiple ways to connect the fixed cylinder 24 and the connecting cylinder 27. For example, an annular platform 25 is fixedly fitted on the inner side of the top of the fixed cylinder 24, and a connecting ring 26 is fixedly fitted on the outer side of the bottom of the connecting cylinder 27. A bearing is fitted in the enclosed area between the annular platform 25 and the connecting ring 26. The connecting cylinder 27 and the fixed cylinder 24 are rotatably connected by the bearing, and sealing rings 29 are provided on both the upper and lower sides of the bearing. By placing the bearing in the enclosed area composed of the fixed cylinder 24, the annular platform 25, the connecting ring 26, the connecting cylinder 27, and the two sealing rings 29, the corrosion of the bearing by the dye can be avoided, and the service life of the bearing can be extended.
[0020] A stirring blade 218 is fixedly fitted in the middle of the rotating tube 22. The top of the rotating tube 22 is sealed and connected to the drive motor 21. There are various ways to connect the rotating tube 22 and the drive motor 21, such as: the rotating tube 22 is fixedly connected to the output shaft of the drive motor 21 through a coupling. Multiple drain ports 23 are vertically spaced along the upper part of the rotating tube 22. Multiple water inlets 210 are evenly opened along the circumference at the bottom of the fixed cylinder 24. A reciprocating screw 211 is concentrically installed inside the fixed cylinder 24. A reciprocating nut 214 is threaded onto the reciprocating screw 211. A sleeve 215 with sealed ends is fixedly fitted on the outside of the reciprocating nut 214. A piston 212 is concentrically fixedly installed at the bottom of the sleeve 215. Multiple through holes are provided on 12, and one-way valves 213 are installed in the through holes. There are various options for one-way valves 213, such as a self-weight valve. The outer ring surface of piston 212 abuts against the inner wall of fixed cylinder 24. The upper end of reciprocating screw 211 passes through sleeve 215 and is rotatably connected to connecting cylinder 27. The lower end of reciprocating screw 211 passes through piston 212 and is fixedly connected to synthesis tank 1. Sealing rings are provided in the gaps between the upper and lower side walls of sleeve 215 and reciprocating screw 211 to prevent dye from entering sleeve 215 and corroding reciprocating nut 214. Multiple sliding grooves are evenly provided along the circumference on the inner side wall of connecting cylinder 27. Sliding sliders 217 are slidably installed in the sliding grooves. The other ends of multiple sliding sliders 217 are fixedly connected to sleeve 215.
[0021] Working principle: When synthesizing dye, firstly, according to the required dye color, the desired solid dye and additives are placed into the tank 11 through the feeding port 12, and the cover plate 13 is closed. Then, according to the ratio, an appropriate amount of water is added through the water inlet pipe 14 for dilution. At the same time, the drive motor 21 is started, which drives the rotating tube 22 to rotate and drives the stirring blade 218 to rotate, thereby stirring the mixture of dye, additives and water in the tank 11. While stirring, the rotating tube 22 also drives the connecting cylinder 27 to rotate. Since the sleeve 215 is slidably connected to the connecting cylinder 27 through the slider 217, and the sleeve 215 is fixedly connected to the reciprocating nut 214, the reciprocating nut... 214 rotates relative to the reciprocating screw 211, allowing the reciprocating nut 214 to move up and down, and the piston 212 moves accordingly. When the piston 212 moves downward, the water pressure impacts the one-way valve 213, at which point the one-way valve 213 opens, and the mixture enters above the piston 212. When the piston 212 moves upward, the one-way valve 213 closes. Through the continuous up and down reciprocating movement of the piston 212, the solid dye particles deposited at the bottom of the tank 11 can be discharged to the upper part of the tank 11 through the rotating pipe 22 and the drain port 23, making the dye mixture more uniform and preventing uneven paper dyeing or color spots from occurring when the dye enters the pulp due to insufficient mixing of solid dye.
[0022] Example 2: The difference between Example 2 and Example 1 is as follows: Figure 1-2 As shown, an observation window 16 is provided on the outer wall of the tank 11. The observation window 16 is made of tempered glass so that the staff can observe the color of the mixed dye. The inner bottom surface of the tank 11 is a downward-concave arc shape so that the solid dye particles can be collected in the fixed cylinder 24.
[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. A paper dye addition synthesis system, comprising a synthesis tank (1), a metering pump (3), and a connecting pipe (4) connected to a pulp pipe, characterized in that: It also includes a stirring mechanism (2). The input end of the metering pump (3) is connected to the bottom of the synthesis tank (1), and the output end is connected to the connecting pipe (4). The stirring mechanism (2) includes a drive motor (21) fixedly installed on the top of the synthesis tank (1), a fixed cylinder (24) fixedly installed on the bottom surface of the synthesis tank (1), and a connecting cylinder (27) rotatably mounted on the upper part of the fixed cylinder (24). The top of the connecting cylinder (27) is sealed and fixedly installed with a rotating pipe (22) communicating with its interior. The middle part of the rotating pipe (22) is fixedly fitted with stirring blades (218). The top of the rotating pipe (22) is sealed and connected to the drive motor (21) for transmission. Multiple drain ports (23) are vertically spaced on the pipe body of the rotating pipe (22). Multiple water inlets (210) are evenly opened on the bottom of the fixed cylinder (24) along the circumference. The fixed cylinder (24) is concentrically arranged with... A reciprocating screw (211) is threaded with a reciprocating nut (214), and a sleeve (215) with sealed ends is fixedly fitted on the outside of the reciprocating nut (214). A piston (212) is concentrically fixedly installed at the bottom of the sleeve (215). Multiple through holes are opened on the piston (212), and a one-way valve (213) is installed in the through holes. The outer ring surface of the piston (212) abuts against the inner wall of the fixed cylinder (24). The upper end of the reciprocating screw (211) passes through the sleeve (215) and is rotatably connected to the connecting cylinder (27). The lower end of the reciprocating screw (211) passes through the piston (212) and is fixedly connected to the synthesis tank (1). Multiple sliding grooves are evenly opened along the circumference on the inner side wall of the connecting cylinder (27). A slider (217) is slidably installed in the sliding groove. The other end of the multiple sliders (217) is fixedly connected to the sleeve (215).
2. The papermaking dye addition and synthesis system according to claim 1, characterized in that: The synthesis tank (1) includes a tank body (11), the top of the tank body (11) is provided with a feeding port (12) and a water inlet pipe (14), a cover plate (13) is hinged inside the feeding port (12), and a discharge pipe (15) connected to the bottom of the tank body (11) is fixedly installed, and the other end of the discharge pipe (15) is connected to the input end of the metering pump (3).
3. The papermaking dye addition and synthesis system according to claim 1, characterized in that: The adjacent ends of the rotating tube (22) and the connecting tube (27) are fixedly fitted with flanges (28), the two flanges (28) are bolted together, and a support frame (216) is fixedly installed inside the connecting tube (27). The reciprocating screw (211) is rotatably connected to the support frame (216).
4. The papermaking dye addition and synthesis system according to claim 1, characterized in that: The inner side of the top of the fixed cylinder (24) is fixedly fitted with a ring platform (25), and the outer side of the bottom of the connecting cylinder (27) is fixedly fitted with a connecting ring (26). A bearing is fitted in the enclosed area between the ring platform (25) and the connecting ring (26). The connecting cylinder (27) and the fixed cylinder (24) are rotatably connected by the bearing, and sealing rings (29) are provided on both the upper and lower sides of the bearing.
5. The paper dye addition and synthesis system according to claim 2, characterized in that: The outer wall of the tank (11) is provided with an observation window (16), which is made of tempered glass.