A cleaning system for a pulp manufacturing system and a method for manufacturing the same

Abstract

The application discloses a kind of clean pulp production system and its production process, it is related to the technical field of needle pulp preparation, including clean cavity, two drive shafts are symmetrically arranged in it, drive assembly is arranged on the side of clean cavity, for driving the rotation of the drive shaft, adjusting shaft is slidably arranged in the drive shaft, guide table is arranged on the outer periphery of adjusting shaft, sliding groove is opened in the outer periphery of drive shaft corresponding to the position of guide table.The present application generates a large number of fine bubbles through air pump and paddle, the needle pulp fibers are lifted to the liquid surface by these bubbles, and the dispersed needle pulp fibers are carried upward during the rising process, while the undispersed needle pulp fibers are difficult to be lifted upward by the bubbles due to their high quality and clumpy shape, only the dispersed pulp fibers can be selected, thereby effectively realizing flotation separation and avoiding the clumpy fibers from entering the next process.

Description

Technical Field

[0001] This invention relates to the technical field of softwood pulp preparation, and in particular to a clean pulp production system and its manufacturing process. Background Technology

[0002] In the production of specialty paper, high-end cultural paper, and dissolving pulp, softwood pulp is widely used as a basic raw material for reinforcing skeleton materials and cellulose derivatives due to its long fibers, thick cell walls, and strong interlacing ability. Softwood pulp is usually supplied in dry pulp board form. Before use, it needs to be fully dispersed into individual fibers in water through a pulping system and formulated with various chemical additives to obtain clean pulp with specific rheological properties and suspension stability.

[0003] Currently, conventional processing systems for softwood pulp typically employ vertical or horizontal hydraulic pulpers combined with mixing devices. During operation, dry pulp boards and water are added to the tank in a specific ratio. A motor drives the paddles to rotate at high speed, utilizing the hydraulic shearing action generated by the paddles to tear and disperse the pulp boards. However, in the actual processing of softwood pulp, due to the long and tough fibers, the center of the dry pulp is difficult to fully impregnate after it swells with water. The fibers are tightly bound together, easily forming unresolved fiber bundles. When these fiber bundles mix and enter the next process, they can easily form agglomerates within the cleaning pulp, resulting in uneven cleaning effects when cleaning items. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing clean pulp production systems and their production processes, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to solve the problem that the center of the existing dry pulp is difficult to be fully impregnated, and the fibers are tightly bound in the dry state, which easily forms unresolved fiber bundles. These fiber bundles will mix with each other and easily form protrusions in the cleaning pulp when entering the next process, resulting in uneven cleaning effect when the cleaning pulp cleans the items.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clean pulp production system, comprising: a clean chamber, wherein two drive shafts are symmetrically arranged inside the clean chamber; a drive assembly is provided on one side of the clean chamber for driving the drive shafts to rotate; an adjusting shaft is slidably disposed inside the drive shafts; a guide platform is provided on the outer periphery of the adjusting shaft; a sliding groove is opened on the outer periphery of the drive shaft corresponding to the position of the guide platform; a rack is provided on the groove wall of the sliding groove; a connecting shaft is rotatably disposed inside the guide platform; blades are provided at both ends of the connecting shaft; a gear meshing with the rack is provided on the outer periphery of the connecting shaft; an adjusting assembly is disposed on one side of the clean chamber for controlling the position of the adjusting shaft; a pneumatic assembly is disposed at the bottom of the clean chamber and connected to the adjusting assembly; and a flotation assembly is disposed at the top of the clean chamber. The pneumatic assembly, in conjunction with the adjusting assembly, allows the adjusting shaft to adjust the angle of the blades according to the volume of the liquid inside the clean chamber.

[0008] As a preferred embodiment of the clean pulp production system of the present invention, the adjusting component includes: a bushing, one end of an adjusting shaft being inserted into the interior of the bushing and in a sliding sealing fit; and a pneumatic push rod disposed at one end of the bushing, the telescopic end of the pneumatic push rod being rotatably fitted with one end of the adjusting shaft to drive the adjusting shaft to reciprocate within the driving shaft.

[0009] As a preferred embodiment of the clean pulp production system of the present invention, the pneumatic component includes: an airbag belt disposed at the bottom of the interior of the clean chamber; an air pipe disposed at the bottom of the airbag belt and extending downward; and an air reservoir disposed at the other end of the air pipe, one end of which is connected to the air inlet of the pneumatic push rod through a diverter pipe.

[0010] As a preferred embodiment of the clean pulp production system of the present invention, wherein: a guide cavity is provided axially inside the adjusting shaft, one end of the adjusting shaft passes through the clean cavity and is rotatably connected to the exhaust pipe of the air pump; a pipe cavity is provided inside the blade, and the pipe cavity is interconnected with the guide cavity; a plurality of exhaust ports communicating with the pipe cavity are provided at the blade edge; and an air inlet groove is provided at the center of the connecting shaft at a position corresponding to the guide cavity, and the air inlet groove is interconnected with the pipe cavity.

[0011] As a preferred embodiment of the clean pulp production system of the present invention, the exhaust ports are evenly distributed along the length of the blade edge, and are used to uniformly spray gas into the mixed liquid to form bubbles when the blade rotates.

[0012] As a preferred embodiment of the clean pulp production system of the present invention, the flotation component includes an upper cover detachably disposed at the top of the cleaning chamber, a transmission belt rotatably disposed inside the upper cover, and a plurality of arc-shaped grooves for receiving and supporting the pulp by air bubbles integrally formed on the surface of the transmission belt along its transmission direction.

[0013] As a preferred embodiment of the clean pulp production system of the present invention, a receiving plate is fixedly provided at one end of the upper cover, and a scraper is provided at the upper end of the receiving plate. The blade of the scraper is in elastic contact with the surface of the transmission belt to scrape the pulp adhering to the surface of the transmission belt onto the receiving plate.

[0014] As a preferred embodiment of the clean pulp production system of the present invention, wherein: a collection component is provided at one end of the clean cavity, which includes a support platform fixedly disposed at one end of the clean cavity, the end of the support platform away from the clean cavity having an arc-shaped structure; a pneumatic pull rod is fixedly connected to the bottom of the support platform; a drag platform is rotatably connected to the end of the pneumatic pull rod, and a rolling element is provided at the bottom end of the drag platform; two dispersion grooves are symmetrically arranged on both sides of the drag platform; a dispersion rotating shaft is slidably inserted through the top of the two dispersion grooves, and the bottom end of the dispersion rotating shaft extends into the dispersion groove and is provided with stirring blades.

[0015] In a preferred embodiment of the clean pulp production system of the present invention, the drive shaft is a hollow shaft structure, and the adjusting shaft is slidably installed inside the drive shaft; the pneumatic push rod is rotatably connected to one end of the adjusting shaft through a bearing.

[0016] As a preferred embodiment of the manufacturing process of the clean pulp production system described in this invention, it includes: Step 1: Add dry pulp and 60% deionized water to the cleaning chamber and let it soak for 2 hours. High liquid level presses down on the air bladder at the bottom of the chamber, allowing gas to enter the gas storage cylinder, providing reserve power for subsequent adjustments.

[0017] Step 2: Start the system. The air tank drives the pneumatic push rod, which causes the adjusting shaft to automatically rotate the paddle to the vertical cutting angle. The drive shaft rotates at high speed to cut the pulp. At the same time, air bubbles are ejected from the exhaust port of the paddle blade, lifting the pulp fragments upward to the liquid surface, thus achieving three-dimensional dispersion and flotation.

[0018] Step 3: The pulp that floats to the surface is captured by the conveyor belt above, transported through the arc-shaped groove to the scraper, scraped off and transferred to the collection assembly.

[0019] Step 4: Add the remaining 20% ​​deionized water to the collection component, and then add the surfactant, citric acid, glycerol, sodium dodecylbenzenesulfonate, chelating agent and dipropylene glycol monomethyl ether in sequence. Start the dispersion shaft to stir and mix evenly.

[0020] Step 5: Finally, add cellulose ether and continue stirring until the pulp viscosity is suitable and uniform, thus obtaining the finished clean pulp.

[0021] The beneficial effects of this invention are: 1. The liquid level adaptive blade angle adjustment mechanism works in conjunction with the bubble generator integrated into the blade edge to immediately generate a large number of microbubbles while cutting the fibers, lifting the dispersed softwood pulp fibers to the liquid surface. This not only effectively avoids secondary fiber agglomeration and impurity residue, but also ensures the looseness and cleanliness of the pulp fibers. Subsequently, the flotation fibers are actively captured and continuously collected through the arc groove of the transmission belt, ultimately obtaining clean pulp.

[0022] 2. A large number of microbubbles lift the softwood pulp fibers to the liquid surface. During the ascent, they carry the dispersed softwood pulp fibers upward. Meanwhile, the undispersed softwood pulp fibers, due to their high mass and clump-like structure, are difficult for the bubbles to push upward. Therefore, only the dispersed pulp fibers can be selected, thus effectively achieving flotation separation and preventing clumped fibers from entering the next process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A scene depicting a clean pulp production system.

[0025] Figure 2 A structural diagram of the collection and flotation components for a clean pulp production system.

[0026] Figure 3 A structural diagram of the cleaning chamber for a clean pulp production system.

[0027] Figure 4 A cross-sectional view of the cleaning chamber of a clean pulp production system.

[0028] Figure 5 A structural diagram of the pneumatic components for a clean pulp production system.

[0029] Figure 6 A structural diagram of the adjusting shaft and drive shaft for a clean pulp production system.

[0030] Figure 7 A structural diagram of the paddles in a clean pulp production system.

[0031] Figure 8 For cleaning pulp production systems Figure 5 Enlarged view of the structure at point A.

[0032] Figure 9A structural diagram of the collection components for a clean pulp production system.

[0033] Figure 10 A flowchart of the manufacturing process for a clean pulp production system.

[0034] In the diagram: 1. Cleaning chamber; 2. Drive shaft; 3. Drive assembly; 4. Adjusting shaft; 41. Guide chamber; 5. Guide platform; 6. Sliding groove; 7. Rack; 8. Connecting shaft; 81. Air inlet groove; 9. Paddle blade; 91. Pipe cavity; 92. Exhaust port; 10. Gear; 11. Adjusting assembly; 111. Bushing; 112. Pneumatic push rod; 12. Pneumatic assembly; 121. Airbag belt; 122. Air pipe; 123. Air storage tank; 13. Flotation assembly; 131. Upper cover; 132. Transmission belt; 133. Arc-shaped groove; 134. Receiving plate; 135. Scraper; 14. Collection assembly; 141. Support platform; 142. Pneumatic tie rod; 143. Traction platform; 144. Rolling element; 145. Dispersion groove; 146. Dispersion shaft. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1, referring to Figures 1-9 This is the first embodiment of the present invention. This embodiment provides a clean pulp production system, which includes a clean chamber 1, an adjusting shaft 4, a drive shaft 2, a guide table 5, an adjusting component 11, an air pressure component 12, and a flotation component 13, to achieve flotation of disintegrated fibers and improve the quality of subsequent pulp preparation.

[0039] Specifically, the clean pulp production system includes a clean chamber 1, inside which two drive shafts 2 are symmetrically arranged. A drive assembly 3 is provided on one side of the clean chamber 1 to drive the drive shafts 2 to rotate. The drive assembly 3 adopts a structure of motor and reducer, and is fixedly connected to one end of the drive shaft 2 through a coupling to provide power input for the entire mixing and cutting system.

[0040] Specifically, the adjusting shaft 4 is slidably disposed inside the drive shaft 2, and several guide platforms 5 are provided on the outer periphery of the adjusting shaft 4. The drive shaft 2 is designed as a hollow shaft structure. The adjusting shaft 4 and the inner wall of the drive shaft 2 are precisely fitted to ensure smooth axial sliding and limit radial sway. The guide platforms 5 are integrally formed with the adjusting shaft 4 or fixed by welding, serving as nodes for power transmission.

[0041] Specifically, a sliding groove 6 is provided on the outer periphery of the drive shaft 2 at a position corresponding to the guide table 5. The sliding groove 6 extends along the axial direction of the drive shaft 2, and its length determines the sliding stroke range of the adjusting shaft 4. A rack 7 is fixedly provided on the groove wall of the sliding groove 6. The rack 7 is parallel to the axis of the drive shaft 2 and is made of high-strength wear-resistant material to ensure transmission accuracy under long-term use.

[0042] Specifically, a connecting shaft 8 is rotatably mounted inside the guide table 5. Both ends of the connecting shaft 8 extend out of the guide table 5 and are fixedly mounted with blades 9. The connecting shaft 8 is installed in the shaft hole of the guide table 5 through bearings to ensure flexible rotation. A gear 10 that meshes with the rack 7 is fixedly mounted on the outer periphery of the connecting shaft 8. When the adjusting shaft 4 slides axially inside the drive shaft 2, the guide table 5 moves accordingly. The gear 10 is forced to rotate under the drive of the rack 7, thereby driving the connecting shaft 8 and the blades 9 to rotate synchronously, converting linear motion into rotational motion, and realizing precise adjustment of the blade angle 9.

[0043] Specifically, the adjustment component 11 is located on one side of the cleaning chamber 1 to control the position of the adjustment shaft 4. The adjustment component 11 is connected to the air pressure component 12, which is located at the bottom of the cleaning chamber 1. The flotation component 13 is located at the top of the cleaning chamber 1 to collect the flotated pulp fibers. The collection component 14 is located at one end of the cleaning chamber 1 to receive the pulp separated by the flotation component 13 and perform subsequent chemical mixing.

[0044] Specifically, the pneumatic component 12 works in conjunction with the adjusting component 11 to enable the adjusting shaft 4 to automatically adjust the angle of the paddle 9 according to the volume of liquid inside the cleaning chamber 1. The core working principle is as follows: when the liquid level inside the cleaning chamber 1 is high, the pressure of the liquid on the bottom pneumatic component 12 increases. The driving signal generated by the pneumatic component 12 causes the adjusting component 11 to push the adjusting shaft 4 to slide. Through the gear 10 and rack 7 mechanism, the paddle 9 is rotated to the cutting angle, perpendicular to the axis of the drive shaft 2. At this time, the paddle 9 uses its cutting edge to efficiently cut and crush the pulp.

[0045] As the liquid level drops, the pressure of the liquid on the pneumatic component 12 decreases, the regulating component 11 reverses its action, the regulating shaft 4 retracts, and the paddle 9 gradually rotates to the stirring angle, parallel to the axis of the drive shaft 2 or at a certain tilt angle. At this time, the paddle 9 stirs and mixes the low-liquid-level pulp over a large area. This adaptive adjustment mechanism does not require additional sensors and electrical control systems. The pure mechanical structure can realize the automatic adjustment of the paddle 9 angle with the change of liquid level, which reduces equipment cost and control complexity, while ensuring working efficiency across the entire liquid level range.

[0046] When the liquid level is high, the cutting mode quickly breaks up dry pulp clumps to prevent large pieces of material from settling at the bottom and becoming difficult to handle. After the liquid level drops, it automatically switches to stirring mode, which increases the stirring area and prevents the bubble generation efficiency from decreasing due to the drop in liquid level, ensuring that the pulp suspension and conveying effect are always stable during the discharge process.

[0047] Example 2, refer to Figures 2-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0048] Specifically, the adjustment assembly 11 includes a bushing 111 and a pneumatic push rod 112. The bushing 111 is fixedly installed on the side wall of the cleaning chamber 1. One end of the adjustment shaft 4 passes through the side wall of the cleaning chamber 1 and is inserted into the bushing 111. A sealing ring is provided between the two to achieve a sliding seal fit. This sealing structure can ensure the smooth sliding and rotation of the adjustment shaft 4 and prevent the liquid in the cleaning chamber 1 from leaking out. The pneumatic push rod 112 is located at one end of the bushing 111. The telescopic end of the pneumatic push rod 112 is rotatably connected to one end of the adjustment shaft 4 through a bearing. Specifically, the end of the adjustment shaft 4 is provided with a connector. The connector has a mounting hole in the center. The outer ring of the bearing is interference-fitted with the mounting hole. The inner ring of the bearing is fixedly connected to the telescopic end of the pneumatic push rod 112. This allows the pneumatic push rod 112 to push the adjustment shaft 4 to slide axially without affecting the drive shaft 2 to drive the adjustment shaft 4 to rotate together, realizing the separation of power transmission and adjustment control and avoiding motion interference.

[0049] Specifically, the pneumatic assembly 12 includes an airbag belt 121, an air tube 122, and an air reservoir 123. The airbag belt 121 is located at the bottom of the interior of the cleaning chamber 1. It is made of elastic rubber or silicone material, hollow inside, and has good elasticity and resilience. The cross-section of the airbag belt 121 is flat, which increases the contact area with the liquid, improves the pressure sensing sensitivity, and avoids the thrust on the airbag belt 121 when the liquid is stirred. The air tube 122 is located at the bottom of the airbag belt 121 and extends downward through the bottom of the cleaning chamber 1, communicating with the interior of the airbag belt 121. The air reservoir 123 is located at the other end of the air tube 122 and is fixedly installed outside the cleaning chamber 1. One end of the air reservoir 123 is connected to the air inlet of the pneumatic push rod 112 through a diverter tube, forming a closed-loop air path.

[0050] When liquid is added to the cleaning chamber 1, the hydrostatic pressure of the liquid acts on the surface of the airbag belt 121, compressing and deforming it. The gas inside is then forced into the air reservoir 123 through the air tube 122. The air reservoir 123 has a certain volume, serving as a buffer and pressure storage unit. The compressed air in the air reservoir 123 is delivered to the pneumatic push rod 112 through the diverter tube, pushing the push rod to extend. When the volume of liquid in the cleaning chamber 1 decreases, the liquid level drops, reducing the pressure of the liquid on the airbag belt 121. Under its own elasticity, the airbag belt 121 partially recovers its deformation, and the gas in the air reservoir 123 flows back to the airbag belt 121. The pressure inside the pneumatic push rod 112 decreases, causing the push rod to retract.

[0051] This design utilizes hydrostatic pressure to directly drive the regulating mechanism, eliminating the need for external energy sources and electronic sensors. It achieves completely passive adaptive liquid level regulation. The elastic reset capability of the airbag (belt 121) ensures reverse action when the liquid level drops. The entire system forms a closed-loop pressure balance circuit, exhibiting sensitive response and reliable operation. Compared to traditional solutions using liquid level sensors and electric actuators, this design significantly simplifies the system structure, reduces manufacturing costs and maintenance difficulty, and avoids the problem of electrical components being easily damaged in humid environments.

[0052] Specifically, the adjusting shaft 4 has an axially oriented guide cavity 41 inside. One end of the adjusting shaft 4 passes through the cleaning cavity 1 and is rotatably connected to an air pump. The outlet of the air pump is connected to the guide cavity 41 through a rotary joint to ensure that the air passage remains connected when the adjusting shaft 4 rotates. The blade 9 has a pipe cavity 91 inside, and the pipe cavity 91 is connected to the guide cavity 41.

[0053] The specific connection path is as follows: the gas in the guide cavity 41 enters the guide table 5 through the radial through hole opened on the side wall of the adjusting shaft 4, and then enters the pipe cavity 91 of the blade 9 through the axial hole in the center of the connecting shaft 8. Several exhaust ports 92 connected to the pipe cavity 91 are opened at the cutting edge of the blade 9. The exhaust ports 92 are evenly distributed along the length of the cutting edge of the blade 9 to ensure the uniformity of gas injection and the reasonableness of bubble size.

[0054] Furthermore, an air inlet groove 81 is provided at the center of the connecting shaft 8, corresponding to the flow guide cavity 41, and the air inlet groove 81 is connected to the pipe cavity 91.

[0055] Compressed air generated by the air pump enters the guide cavity 41, flows axially along the adjustment shaft 4, and then enters the pipe cavity 91 of each blade 9 through the air inlet groove 81. Finally, it is ejected at high speed from the exhaust port 92. When the blade 9 rotates in the liquid, the ejected gas is broken into a large number of tiny bubbles under the action of liquid shear force and is evenly distributed in the cleaning cavity 1.

[0056] As the bubbles rise, they carry the dispersed softwood pulp fibers upwards. Meanwhile, the undispersed softwood pulp fibers, due to their higher mass and clump-like structure, are difficult for the bubbles to push upwards. Therefore, only the dispersed pulp fibers can be selected, effectively achieving flotation separation and preventing clumped fibers from entering the next process. Secondly, the exhaust port 92 is located at the cutting edge of the paddle 9, utilizing the liquid flow generated by the rotation of the paddle 9 to quickly disperse the bubbles, preventing the formation of large bubbles that reduce flotation efficiency. Furthermore, the gas injection direction is coordinated with the movement direction of the paddle 9, which enhances the local turbulence around the paddle 9 and improves the mixing uniformity of the pulp fibers and liquid. By adjusting the output pressure and gas volume of the air pump, the intensity and density of bubble generation can be controlled to meet the processing requirements of pulps with different concentrations.

[0057] Specifically, the flotation assembly 13 includes an upper cover 131, a transmission belt 132, a receiving plate 134, and a scraper 135. The upper cover 131 is detachably mounted on the top of the cleaning chamber 1 and is sealed to prevent liquid splashing and facilitate internal maintenance. The transmission belt 132 is rotatably mounted inside the upper cover 131. The transmission belt 132 is driven by a motor-driven roller. The surface of the transmission belt 132 has multiple arc-shaped grooves 133 integrally formed along its transmission direction. The curved surface structure of the arc-shaped grooves 133 can better fit the surface of the bubbles and increase the contact area with the pulp fibers.

[0058] Gas ejected from the exhaust port 92 of the paddle 9 forms a large number of bubbles. As these bubbles rise in the liquid, they carry pulp fibers to the surface. When the bubbles reach the surface and burst upon contact with the drive belt 132, the pulp fibers are released and directly adhere to the surface of the drive belt 132. The arc-shaped grooves 133 on the surface of the drive belt 132 effectively capture these fibers. The curved design of the grooves makes it easier for the fibers to embed and be carried. The receiving plate 134 is fixedly mounted at one end of the upper cover 131, and the scraper 135 is mounted on the upper end of the receiving plate 134. The cutting edge of the scraper 135 makes elastic contact with the surface of the drive belt 132. When the drive belt 132 rotates to the scraper 135, the scraper 135 scrapes off the pulp adhering to the surface of the drive belt 132. The pulp falls onto the receiving plate 134 and slides out along the receiving plate 134.

[0059] Specifically, a receiving plate 134 is fixedly provided at one end of the upper cover 131; a scraper 135 is provided at the upper end of the receiving plate 134, and the cutting edge of the scraper 135 is in elastic contact with the surface of the transmission belt 132 to scrape the pulp adhering to the surface of the transmission belt 132 onto the receiving plate 134.

[0060] The design of the arc-shaped groove 133 significantly improves the capture rate of pulp fibers. The scraper 135 is made of elastic material, which can effectively scrape off fibers without damaging the surface of the transmission belt 132. The entire flotation assembly 13 is integrated into the upper cover 131. Compared with the traditional static foam overflow collection method, this design realizes continuous collection of pulp through an active transmission mechanism, avoiding the problem of fiber re-settling after accumulation on the liquid surface, and greatly improving the separation efficiency. At the same time, the operating speed of the transmission belt 132 can be adjusted according to the pulp output to match the downstream processing steps.

[0061] Specifically, the collection assembly 14 includes a support platform 141, a pneumatic tie rod 142, a drag table 143, a dispersion tank 145, and a dispersion shaft 146. The support platform 141 is fixedly disposed at one end of the cleaning chamber 1 to receive the pulp sliding down from the flotation assembly 13. The end of the support platform 141 away from the cleaning chamber 1 has an arc-shaped structure, matching the swing trajectory of the drag table 143, and the arc surface is smoothly treated to reduce frictional resistance.

[0062] The outer shell of the pneumatic tie rod 142 is fixedly connected to the support 141. The telescopic end of the pneumatic tie rod 142 extends upward and is rotatably connected to the drag platform 143. The pneumatic tie rod 142 adopts a bidirectional pneumatic damping design, which can be passively stretched or actively extended. It has an internal gas spring structure. The bottom end of the drag platform 143 is provided with a rolling element 144. The rolling element 144 includes a shuttle-shaped part. Rolling tables are rotatably provided at both ends of the shuttle-shaped part. The rolling tables are made of wear-resistant polyurethane material and have anti-slip texture on the surface. The rolling tables and the arc-shaped structure surface of the support 141 make rolling contact to form a low-friction rolling pair.

[0063] Two dispersion tanks 145 are symmetrically arranged on both sides of the platform 143. The dispersion tanks 145 are made of stainless steel with smooth inner walls and an arc-shaped bottom for easy material discharge. A dispersion shaft 146 is slidably mounted on the top of the two dispersion tanks 145 via a slider. The bottom end of the dispersion shaft 146 extends into the dispersion tank 145 and is equipped with stirring blades. The stirring blades adopt a double-layer staggered design, with the upper blades used for surface circulation and the lower blades used for bottom mixing to improve the uniformity of mixing.

[0064] Furthermore, a drive motor is provided at the connection between the pneumatic pull rod 142 and the drag table 143 to drive the rolling element 144 to rotate, thereby adjusting the position of the dispersion tank 145.

[0065] The pulp collected from the flotation unit 13 falls into the dispersion tank 145. The dispersion shaft 146 is driven by a motor to rotate, which drives the stirring blades to rotate in the dispersion tank 145 to stir and mix the pulp. At this time, chemical additives can be added to the dispersion tank 145 to achieve full mixing of pulp and chemical agents.

[0066] By transferring the chemical mixing process from the main cleaning chamber 1 to an independent collection component 14, the physical dispersion and chemical treatment are separated, avoiding excessive consumption or mutual interference of chemical agents in the main chamber. The formula can be flexibly adjusted according to the needs of different pulp products. The dual-chamber structure of the dispersion tank 145 can be used alternately to achieve continuous production without interruption. The sliding design of the dispersion shaft 146 allows it to adjust the stirring depth according to the liquid level to ensure the mixing effect. The configuration of the pneumatic pull rod 142 and the rolling element 144 greatly improves the ease of operation of the equipment and reflects the humanized design concept.

[0067] Specifically, the drive shaft 2 is a hollow shaft structure, and the adjusting shaft 4 is slidably installed inside the drive shaft 2; the pneumatic push rod 112 and one end of the adjusting shaft 4 are rotatably connected by a bearing.

[0068] Example 3, referring to Figures 1-10 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0069] Specifically, step one: soaking in the cleaning chamber 1. Softwood pulp, which serves as the base carrier and thickening framework for the cleaning pulp, is added to the cleaning chamber 1 along with 60% deionized water and allowed to soak for 2 hours. During this time, due to the high liquid level, the liquid pressure compresses the air bladder 121 at the bottom of the chamber, forcing the gas inside into the air storage cylinder 123, providing reserve power for subsequent regulation. The working principle of this process is to use the hydrostatic pressure of the liquid to convert the liquid level signal into a gas pressure signal and store it as an energy source for subsequent automatic regulation. The beneficial effects are: liquid level sensing can be achieved without an external power source, and the potential energy of the soaking process is converted into gas pressure energy for storage, achieving natural energy recovery and utilization.

[0070] Specifically, step two: the regulating component 11 and the air pressure component 12 disperse flotation. The system is started, and the compressed air stored in the air tank 123 drives the pneumatic push rod 112 to extend, pushing the regulating shaft 4 to slide inside the drive shaft 2. As the regulating shaft 4 moves, the gear 10 on the guide table 5 meshes with the rack 7 in the sliding groove 6, causing the connecting shaft 8 to rotate, which in turn drives the paddle 9 to automatically rotate to a vertical cutting angle. The drive component 3 is started, and the drive shaft 2 rotates at high speed, with the paddle 9 cutting and crushing the soaked pulp with its cutting edge. Simultaneously, the air pump starts, and compressed air enters the pipe cavity 91 of the paddle 9 through the guide cavity 41 of the regulating shaft 4, and is ejected at high speed from the exhaust port 92 of the cutting edge, generating a large number of microbubbles in the mixed liquid. As the bubbles rise, they lift the pulp shreds to the liquid surface, achieving three-dimensional dispersion and flotation. After the fibers are dispersed, they are immediately separated by the bubbles, effectively avoiding the secondary entanglement problem that easily occurs in softwood pulp fibers due to their long fiber characteristics. This lays the foundation for fiber dispersion in the subsequent preparation of clean pulp with uniform adsorption capacity.

[0071] The air pressure released from the air storage cylinder 123 is inversely proportional to the liquid level. The higher the liquid level, the greater the stored air pressure, the greater the thrust of the pneumatic push rod 112, the longer the sliding distance of the adjusting shaft 4, and the larger the rotation angle of the paddle 9. This correspondence ensures that the paddle 9 is at the most suitable cutting angle at high liquid levels and automatically adjusts to the appropriate stirring angle at low liquid levels. The generation of bubbles is synchronized with the rotation of the paddle 9. The design of the exhaust port 92 located at the cutting edge allows bubbles to be generated near the cutting area of ​​the paddle 9, directly acting on the pulp clumps being cut, promoting fiber dispersion. Cutting and bubble flotation are carried out simultaneously, and the physical shear force and pneumatic force work together to significantly improve the pulp dispersion efficiency. Compared with the traditional process of dispersion followed by flotation, this process allows the fibers to be captured and floated by bubbles immediately after being broken up, avoiding secondary agglomeration and shortening the processing time.

[0072] Specifically, step three: flotation assembly 13 separates and collects the pulp. The pulp floated to the surface is captured by the overhead conveyor belt 132. The arc-shaped grooves 133 on the surface of the conveyor belt 132 increase the contact area with air bubbles and pulp, effectively adhering fibers. The conveyor belt 132 transports the pulp to the scraper 135, which scrapes the pulp off and transfers it to the collection assembly 14. The curved surface design of the arc-shaped grooves 133 utilizes surface tension and capillary action to enhance the adsorption force on fibers, preventing fibers from falling off during transport. The elastic contact of the scraper 135 thoroughly removes fibers without damaging the conveyor belt 132. The beneficial effects are: continuous automatic pulp collection is achieved, avoiding the low efficiency and intermittent nature of manual pulp scooping in traditional processes. The operating speed of the conveyor belt 132 can be adjusted according to pulp production, forming continuous production with downstream processes and improving overall production efficiency.

[0073] Specifically, step four: collect the chemical mixture within component 14. Then, add the functional cleaning components sequentially: First, add a surfactant (such as fatty alcohol polyoxyethylene ether JFC, dosage 2%-5%) and a penetrant, and start the dispersion shaft 146 to stir at low speed to fully dissolve it in water, reduce the surface tension of the system, and prepare for the subsequent penetration of the slurry into the micropores of the stone.

[0074] Next, add a pH adjuster: Choose citric acid (for rust and yellowing removal, dosage 3%-5%) or ammonia / triethanolamine (for alkaline formulas) according to the type of stain, and add a corrosion inhibitor (sodium gluconate or sodium silicate, dosage 1%) to protect the stone from corrosion and loss of gloss during subsequent application; pH value must be strictly controlled: if used for marble cleaning, the pH of the system should be adjusted to between 6 and 8, and pH < 5 is strictly prohibited.

[0075] Then add the adsorbent: slowly add diatomaceous earth or bentonite (10%-20% of the amount) and stir to make it evenly dispersed in the slurry. This part of the adsorbent will play a key role in adsorbing the precipitated stains and preventing secondary back seepage in the subsequent construction.

[0076] Finally, add stain-removing components according to the type of stain: If used for degreasing / removing adhesives: Add nonionic / anionic surfactants and solvent-based degreasing agents (total dosage 8%-12%) in this step.

[0077] If used for rust / yellowing removal: ensure that citric acid has been added beforehand, and EDTA can be added to enhance the complexing ability.

[0078] For removing pigments / tea stains / ink stains: add hydrogen peroxide (3%-10%) or sodium percarbonate as an oxidizing bleaching agent.

[0079] If used to remove water stains / alkali return: add acidic corrosion inhibitors and silicate stabilizers.

[0080] The chemical mixing process is transferred from the main cleaning chamber 1 to a separate collection assembly 14, avoiding the dilution of chemicals by large amounts of liquid in the main chamber and improving the utilization rate of the chemicals. The stirring blades of the dispersion shaft 146 generate strong turbulence, promoting the contact and penetration of the chemicals with the fibers and improving the efficiency of the reaction. The dual-tank structure of the dispersion tank 145 allows for alternating operation, so that while one batch is being mixed, another batch can continue to be collected, ensuring production continuity.

[0081] Specifically, step five: viscosity adjustment and finishing. Finally, add cellulose ether (CMC or HPMC, as a thickener, 3%-8% of the total amount), and continue stirring until the pulp viscosity is suitable and uniform, forming a paste-like, non-flowing, homogeneous pulp. Under stirring, the cellulose ether dissolves uniformly in the pulp, and its molecular chains form a hydrogen bond network with water molecules, increasing the pulp viscosity and improving suspension stability and workability. After stirring, allow it to stand for 15-30 minutes to allow the thickener to fully swell and for the components to reach equilibrium. Precise control of the final viscosity allows the finished pulp to be suitable for different construction processes, such as spraying, brushing, or rolling, expanding the product's application range. Simultaneously, the finishing stirring within the collection component 14 further eliminates small fiber clumps, ensuring the uniformity of product quality.

[0082] The resulting product is a functional cleaning pulp with a paste-like consistency that does not flow. Its pH value can be controlled within the range of acidic (rust removal), neutral (general for marble), or alkaline (oil removal) depending on the target stone and the type of stain. It has good permeability, adsorption, and slow-release cleaning ability, and is suitable for cleaning deep stains such as oil stains, rust stains, pigments, water stains, and efflorescence on natural stones such as marble, granite, limestone, and sandstone.

[0083] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A clean pulp production system, characterized in that: include, The cleaning chamber (1) has two drive shafts (2) symmetrically arranged inside it. A drive assembly (3) is provided on one side of the cleaning chamber (1) for driving the drive shafts (2) to rotate. The adjusting shaft (4) is slidably disposed inside the drive shaft (2), and a guide plate (5) is provided on the outer periphery of the adjusting shaft (4). A sliding groove (6) is provided on the outer periphery of the drive shaft (2) corresponding to the guide table (5), and a rack (7) is provided on the groove wall of the sliding groove (6). The guide platform (5) is provided with a connecting shaft (8) that rotates inside. The connecting shaft (8) has blades (9) at both ends. The outer circumference of the connecting shaft (8) is provided with a gear (10) that meshes with the rack (7). Adjustment component (11), located on one side of the cleaning chamber (1), is used to control the position of adjustment shaft (4). The pneumatic assembly (12) is located at the bottom of the cleaning chamber (1) and connected to the adjustment assembly (11). The flotation assembly (13) is located at the top of the cleaning chamber (1). The pneumatic assembly (12) works with the adjustment assembly (11) to allow the adjustment shaft (4) to adjust the angle of the blade (9) according to the volume of liquid inside the cleaning chamber (1).

2. The clean pulp production system as described in claim 1, characterized in that: The adjustment component (11) includes: The bushing (111) has one end of the adjusting shaft (4) inserted into the inside of the bushing (111) and is in sliding seal fit. A pneumatic push rod (112) is located at one end of a bushing (111). The telescopic end of the pneumatic push rod (112) is rotatably engaged with one end of an adjusting shaft (4) to drive the adjusting shaft (4) to slide back and forth inside the drive shaft (2).

3. The clean pulp production system as described in claim 1 or 2, characterized in that: The pneumatic assembly (12) includes: An airbag strap (121) is located at the bottom of the interior of the cleaning cavity (1); The trachea (122) is located at the bottom end of the airbag band (121) and extends downward; An air storage cylinder (123) is located at the other end of the air pipe (122), and one end of the air storage cylinder (123) is connected to the air inlet of the pneumatic push rod (112) through a split pipe.

4. The clean pulp production system as described in claim 1, characterized in that: The adjusting shaft (4) has an axially oriented guide cavity (41) inside. One end of the adjusting shaft (4) passes through the cleaning cavity (1) and is rotatably connected to the exhaust pipe of the air pump. The blade (9) has a pipe cavity (91) inside, which is connected to the guide cavity (41); Several exhaust ports (92) connected to the pipe cavity (91) are provided at the cutting edge of the blade (9). Furthermore, an air inlet groove (81) is provided at the center of the connecting shaft (8) corresponding to the flow guide cavity (41), and the air inlet groove (81) is connected to the pipe cavity (91).

5. The clean pulp production system as described in claim 4, characterized in that: The exhaust ports (92) are evenly distributed along the length of the blade (9) and are used to uniformly spray gas into the mixed liquid to form bubbles when the blade (9) rotates.

6. The clean pulp production system as described in claim 5, characterized in that: The flotation component (13) includes: The upper cover (131) is detachably mounted on the top of the cleaning chamber (1); The upper cover (131) is internally equipped with a drive belt (132) for rotation. The surface of the transmission belt (132) is integrally formed with multiple arc-shaped grooves (133) for receiving the pulp lifted by the air bubbles.

7. The clean pulp production system as described in claim 6, characterized in that: A receiving plate (134) is fixedly provided at one end of the upper cover (131). A scraper (135) is provided at the upper end of the receiving plate (134). The cutting edge of the scraper (135) is in elastic contact with the surface of the transmission belt (132) to scrape the pulp adhering to the surface of the transmission belt (132) onto the receiving plate (134).

8. The clean pulp production system as described in claim 1, characterized in that: The cleaning chamber (1) is provided with a collection component (14) at one end, which includes a support (141) fixedly installed at one end of the cleaning chamber (1), and the end of the support (141) away from the cleaning chamber (1) has an arc-shaped structure. A pneumatic tie rod (142) is fixedly connected to the bottom of the foundation (141). The end of the pneumatic tie rod (142) is rotatably connected to a drag table (143), and a rolling element (144) is provided at the bottom of the drag table (143). Two dispersion slots (145) are symmetrically arranged on both sides of the drag table (143). The top of the two dispersion tanks (145) is slidably fitted with a dispersion shaft (146), and the bottom of the dispersion shaft (146) extends into the dispersion tank (145) and is fitted with stirring blades.

9. The clean pulp production system as described in claim 1 or 2, characterized in that: The drive shaft (2) is a hollow shaft structure, and the adjusting shaft (4) is slidably installed inside the drive shaft (2); The pneumatic push rod (112) and one end of the adjusting shaft (4) are rotatably connected by a bearing.

10. A clean pulp production process, comprising the clean pulp production system as described in any one of claims 1-9, further comprising the following production process: characterized in that, include: Step 1: Add dry pulp and 60% deionized water to the cleaning chamber (1), let it stand and soak for 2 hours, press the air bag belt (121) at the bottom of the chamber at the high liquid level, and the gas enters the gas storage cylinder (123) to reserve power for subsequent adjustment; Step 2: Start the system. The air storage cylinder (123) drives the pneumatic push rod (112), which causes the adjusting shaft (4) to drive the paddle (9) to automatically rotate to the vertical cutting angle. The drive shaft (2) rotates at high speed to cut the pulp. At the same time, the exhaust port (92) of the blade (9) sprays out bubbles, lifting the pulp fragments upward to the liquid surface, thus achieving three-dimensional dispersion and flotation. Step 3: The pulp that floats to the surface is captured by the conveyor belt above and transported through the arc groove (133) to the scraper (135), where it is scraped off and transferred to the collection assembly (14); Step 4: Add the remaining 20% ​​deionized water to the collection component (14), and add the surfactant, citric acid, glycerol, sodium dodecylbenzenesulfonate, chelating agent and dipropylene glycol monomethyl ether in sequence. Start the dispersion shaft (146) to stir and mix evenly. Step 5: Finally, add cellulose ether and continue stirring until the pulp viscosity is suitable and uniform, thus obtaining the finished clean pulp.

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