A pulp filtering device for a papermaking machine

Abstract

The present application relates to papermaking machinery technical field, disclose a kind of papermaking machinery pulping filtration device, including shell, arc screen plate, feeding mechanism, high-pressure flushing mechanism.Arc screen plate discharge side is equipped with multiple groups of reflection unit, each group of reflection unit includes an arc elastic baseband and the reflection plate rotatably arranged on its two sides by connecting assembly.The end of each reflection unit is connected with horizontal support rod by elastic suspension assembly.Horizontal driving mechanism drives support rod to move horizontally, and the power source of this mechanism is derived from the falling water flow of impact impeller.When working, the falling water flow impacts the reflection plate to produce upward splashing, and continuously scours the back of arc screen plate;When reflection unit moves horizontally, reflection plate can be close to the back of arc screen plate for auxiliary physical cleaning.The present application realizes the recycling of wastewater kinetic energy, forms continuous, dynamic composite self-cleaning, and significantly improves the anti-clogging ability.

Description

Technical Field

[0001] This invention relates to the field of papermaking machinery technology, and in particular to a pulping and filtering device for papermaking machinery. Background Technology

[0002] Arc screens, as a type of non-powered screening equipment, are widely used in processes such as white water treatment and pulp thickening in the papermaking industry. Their working principle involves the pulp flowing tangentially across the surface of an arc-shaped screen under pressure. Solid-liquid separation is achieved through centrifugal force and gravity; the liquid is discharged through the screen openings, while solids such as fibers are retained. To prevent clogging of the screen openings, existing equipment typically has a high-pressure flushing water pipe installed behind the screen plate for backwashing at fixed intervals.

[0003] However, this intermittent high-pressure rinsing has significant drawbacks: First, for highly viscous pulps (such as waste paper pulp containing adhesives), silt will still accumulate rapidly on the screen plate during the rinsing interval, leading to a rapid decline in filtration efficiency; second, high-pressure rinsing consumes a large amount of clean water and electricity, and the fixed rinsing mode is not intelligent enough, making it uneconomical in the context of rising water and energy costs; finally, when rinsing cannot resolve severe blockages, the machine must be stopped for manual cleaning or chemical soaking, which seriously affects production continuity and increases maintenance costs.

[0004] For example, Chinese patent CN114541163B discloses a pulping adhesive treatment device that uses retractable brushes to perform contact scraping cleaning on a centrifugal screen. This solution has the following shortcomings: First, its cleaning effect relies entirely on the mechanical contact between the brushes and the screen, which is a single physical scraping mode. For highly adhesive substances, the scraping effect is limited, and it easily causes brush wear or screen damage. Second, this solution requires additional power sources such as hydraulic rods and motors to drive the brush movement, resulting in high energy consumption and failing to utilize the waste fluid energy from the production process. Furthermore, the brush movement is singular (only retractable movement), unable to achieve multi-dimensional composite cleaning of the back of the screen, limiting the cleaning coverage and uniformity. Therefore, existing technology still lacks a highly efficient filtration device that can fully utilize its own process waste energy, achieve multi-mode composite cleaning, and has an adaptive protection function for the screen. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of existing arc screens that rely on intermittent rinsing, are prone to clogging, have high energy consumption and are inconvenient to maintain, and to provide a papermaking machinery pulping and filtering device that can use the fluid energy generated by its own operation for continuous dynamic self-cleaning.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The present invention provides a pulping and filtering device for papermaking machinery, including a housing, an arc-shaped screen plate disposed in the housing, a feeding mechanism communicating with the feeding side of the arc-shaped screen plate, a high-pressure flushing mechanism for flushing the arc-shaped screen plate, and a filtrate outlet and a solids outlet disposed at the bottom of the housing, wherein a reflective cleaning mechanism is provided on the discharge side of the arc-shaped screen plate. The reflective cleaning mechanism includes multiple sets of reflective units arranged laterally along the arc-shaped sieve plate, and a support drive assembly for suspending and driving all the reflective units. Each set of the reflective units includes an arc-shaped elastic baseband and reflective plates disposed on both sides of the elastic baseband. The reflective plates are connected to the elastic baseband through a connecting component and can rotate relative to the elastic baseband. The reflector is configured to receive liquid flowing down from the arc-shaped sieve and generate a water flow that splashes toward the back of the arc-shaped sieve. The support drive assembly includes at least one horizontally arranged support rod and a transverse drive mechanism that drives the support rod to reciprocate along the transverse direction of the arc-shaped screen plate; the end of the elastic base band is connected to the support rod through an elastic suspension assembly, so that the reflective unit can generate elastic swaying relative to the support rod under the impact of the liquid.

[0007] The present invention discloses a pulping and filtering device for papermaking machinery, wherein the transverse driving mechanism includes a crank-slider mechanism, the crank-slider mechanism includes a slider, a crank, and a connecting rod, one end of the crank is fixed to a rotating shaft, the other end is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the slider; the slider is slidably engaged with a guide rail, and the slider is fixedly connected to the support rod.

[0008] The present invention provides a pulping and filtering device for papermaking machinery, wherein an impeller is provided on the rotating shaft, and the impeller is arranged on the wastewater path flowing down from the arc-shaped screen plate or the jet water path of the high-pressure washing mechanism, and the rotating shaft is driven to rotate by the impact of the water flow.

[0009] The present invention discloses a pulping and filtering device for papermaking machinery, wherein the surface of the reflector plate is provided with a cleaning part, the cleaning part being configured to perform contact physical cleaning of the screen holes on the back of the arc-shaped screen plate when the reflector unit moves laterally and comes into contact with the back of the arc-shaped screen plate.

[0010] The present invention provides a pulping and filtering device for papermaking machinery, wherein the cleaning part is a brush protruding from the surface of the reflector plate.

[0011] The present invention discloses a pulping and filtering device for papermaking machinery, wherein the elastic suspension assembly includes a fixed block fixed to the support rod, a guide block fixedly connected to the end of the elastic base band, and a guide rod connecting the fixed block and the guide block; the guide block is provided with a guide hole that cooperates with the guide rod, and a spring is provided between the guide block and the fixed block.

[0012] The present invention provides a pulping and filtering device for papermaking machinery, wherein the connecting component includes a snap-fit ​​member fixed to the reflector plate, the snap-fit ​​member being snapped onto the elastic baseband in a detachable or slidable manner, and allowing the reflector plate to rotate within a limited range relative to the elastic baseband under the action of an external force.

[0013] The present invention provides a pulping and filtering device for papermaking machinery, wherein the two reflective plates located on both sides of the elastic base band are connected by an elastic element.

[0014] The present invention discloses a pulping and filtering device for papermaking machinery, wherein the support rod is a hollow structure, the inner cavity of which is connected to a high-pressure water source, and the support rod is provided with a plurality of injection micro-holes facing the back of the arc-shaped screen plate.

[0015] The present invention discloses a pulping and filtering device for papermaking machinery, wherein there are two support rods, located at the upper and lower ends of all the reflective units respectively; the transverse drive mechanism symmetrically drives the two support rods to reciprocate synchronously.

[0016] The beneficial effects of this invention are as follows: Energy-saving and environmentally friendly: The ingenious recycling and utilization of the kinetic energy of the wastewater after screening to drive the reflective cleaning mechanism greatly reduces the reliance on additional high-pressure rinsing and realizes the internal recycling of energy.

[0017] Continuous proactive anti-clogging: The cleaning action occurs continuously along with the filtration process. It is a preventative cleaning method that can delay the formation and accumulation of blockages at the source, forming a synergistic mechanism of "proactive prevention + passive reinforcement" with high-pressure flushing.

[0018] Highly efficient composite cleaning: It can integrate three modes: "water splash (surface cleaning), physical scraping (point cleaning), and moving water jet (line cleaning)" to form a three-dimensional composite cleaning network, which greatly enhances the anti-clogging effect.

[0019] Reliable adaptive operation: The design of the elastic suspension and rotatable reflector enables the system to adapt to changes in water flow and screen profile, avoiding rigid collision damage to the equipment and ensuring smooth and reliable operation.

[0020] The following description, in conjunction with the accompanying drawings, further illustrates a pulping and filtering device for papermaking machinery according to the present invention. Attached Figure Description

[0021] Figure 1This is an isometric view of a pulping and filtering device for papermaking machinery. Figure 2 yes Figure 1 The diagram shows the internal structure of a pulping and filtering device for papermaking machinery. Figure 3 This is a partial structural diagram of the reflective unit; Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 yes Figure 1 Top view; Figure 6 yes Figure 5 Sectional view at the center CC; Figure 7 This is a schematic diagram of the reflector's structure; Figure 8 yes Figure 4 A magnified view of a section at point B.

[0022] In the diagram: 1. Shell; 2. Arc-shaped sieve plate; 3. Reflecting unit; 30. Elastic base band; 31. Reflecting plate; 311. Cleaning section; 32. Connecting assembly; 33. Elastic element; 40. Support rod; 41. Spray micro-orifice; 50. Lateral drive mechanism; 51. Slider; 52. Crank; 53. Connecting rod; 54. Rotating shaft; 55. Guide rail; 56. Impeller; 60. Elastic suspension assembly; 61. Fixing block; 62. Guide block; 63. Guide rod; 64. Spring; 4. High-pressure flushing mechanism; 5. Feed inlet; 6. Filtrate outlet; 7. Solids outlet; 8. Front cover door; 81. Observation window; 9. Rear cover door; 10. Flushing water inlet; 11. Exhaust port; 12. Lifting ring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Reference Figures 1-8This invention provides a pulping and filtering device for papermaking machinery, comprising a stainless steel housing 1. An arc-shaped screen plate 2 is fixedly installed on the front side of the housing 1, the width of which can be selected according to process requirements. A feed inlet 5 is provided at the top of the housing 1, through which the pulp is uniformly guided to the top of the arc surface of the arc-shaped screen plate 2 via a feed box. A filtrate outlet 6 and a solids outlet 7 are provided at the bottom of the housing 1. A front cover door 8 with an observation window 81 and a handle is provided at the front of the housing 1, and a rear cover door 9 is provided at the rear. A flushing water inlet 10, an exhaust port 11, and a lifting ring 12 are also provided at the top. A high-pressure flushing mechanism 4 is used to periodically and forcefully backwash the arc-shaped screen plate 2.

[0025] A reflective cleaning mechanism is located behind the arc-shaped screen plate 2 (i.e., on the discharge side). This mechanism consists of multiple sets of reflective units 3 arranged at intervals along the transverse direction of the arc-shaped screen plate 2. Figures 2-4 As shown, the core of each set of reflective units 3 is an elastic baseband 30. The elastic baseband 30 is preferably made of corrosion-resistant and fatigue-resistant rubber or polyurethane material, and is molded into an arc shape with a curvature similar to that of the arc-shaped screen plate 2, so that it can be arranged approximately parallel to each other at a certain distance behind the arc-shaped screen plate 2.

[0026] like Figure 3 and Figure 4As shown, a reflector 31 is installed on each side of each elastic base band 30. The reflector 31 can be made of lightweight plastic or composite material. The reflector 31 is not directly fixed, but is rotatably connected to the elastic base band 30 through a connecting assembly 32. In this embodiment, the connecting assembly 32 includes a snap-fit ​​component (e.g., a plastic holder with an arc-shaped groove) that is fixedly connected to the back of the reflector 31. The snap-fit ​​component is snapped onto the corresponding side of the elastic base band 30 in an interference fit or a damping fit manner. This snap-fit ​​method is similar to the connection between a mobile phone case and the mobile phone body, which allows the reflector 31 to overcome the snap-fit ​​friction and rotate at a certain angle relative to the elastic base band 30 when it is impacted by external water flow or in contact with the arc-shaped screen plate 2. At the same time, an elastic element 33, such as a tension spring, is also connected between the two reflectors 31 located on the same side of the elastic base band 30. The elastic element 33 maintains an initial included angle (e.g., 60°~120°) between the two reflector plates 31 in their natural state, and can adaptively change this included angle when subjected to external force, for example, becoming nearly parallel when close to the arc-shaped screen plate 2, thereby avoiding structural interference and achieving flexible contact. In this embodiment, multiple sets of reflector plates 31 are provided, forming a roughly keel-like shape. Since the elastic baseband 30 is arc-shaped, not straight, multiple sets of reflector plates 31 are needed to ensure that the contact points between the locking element and the elastic baseband 30 are approximately tangent, minimizing jamming. Even if jamming occurs, the splashing effect can still be achieved. Furthermore, the clever design of multiple sets of reflector plates 31 increases the tension of the entire elastic baseband 30, maintaining its arc shape in the suspended state. Moreover, the swaying of the elastic baseband 30 also minimizes jamming. A cleaning part 311, such as vulcanized rubber dots, embedded brush blocks, or detachable scrapers and brush bristles, can be provided on the surface of the reflector plate 31 facing the arc-shaped screen plate 2.

[0027] like Figures 3-8 As shown, the upper and lower ends of all reflective units 3 are connected to upper and lower support rods 40, respectively. The support rods 40 are horizontally arranged rigid rods connected to the elastic suspension assembly 60. Specifically, a fixing block 61 is fixed to the support rod 40, and a guide block 62 is fixed to the end of the elastic base band 30. One end of a guide rod 63 is fixed to the fixing block 61, and the other end is freely inserted into a guide hole on the guide block 62. The two ends of a spring 64 abut against the fixing block 61 and the guide block 62, respectively (or are secured by positioning rings). Thus, the entire reflective unit 3 is suspended from the support rod 40 by the elastic force of the spring 64. It can move synchronously with the support rod 40, and under the action of external forces (such as the uneven impact of falling water), it can slide along the guide rod 63 via the guide block 62 and compress the spring 64, generating elastic displacement or oscillation relative to the support rod 40. This swaying helps to make the direction of the splashed water flow more random and the coverage more comprehensive.

[0028] like Figure 3 and Figure 4 As shown, the transverse drive mechanism 50 is used to drive the two support rods 40 to perform synchronous transverse reciprocating motion. In this embodiment, the mechanism adopts a classic crank-slider mechanism. The ends of the two support rods 40 are respectively fixedly connected to a slider 51. The slider 51 is mounted on a guide rail 55 fixed inside the housing 1. One end of the crank 52 is fixed to a transverse rotating shaft 54, and the other end is hinged to one end of a connecting rod 53, the other end of which is hinged to the slider 51. Multiple impellers 56 are mounted on the rotating shaft 54. The impellers 56 are positioned so that they are on the main channel of the wastewater falling from the screen holes of the arc-shaped screen plate 2. During operation, the continuously falling wastewater impacts the impellers 56, driving the rotating shaft 54 ​​to rotate slowly, and then converting the rotational motion into linear reciprocating motion of the slider 51 and the support rods 40 through the crank 52 and the connecting rod 53. The upper and lower support rods 40 can be mechanically linked (such as a synchronizing rod or a synchronizing belt) to ensure synchronous motion.

[0029] As a further explanation of this embodiment, the lateral spacing between the multiple sets of reflective units 3 needs to be optimized to ensure that there are enough gaps so as not to obstruct the main nozzle of the high-pressure flushing mechanism 4 from fully covering and flushing the arc-shaped screen plate 2.

[0030] As a further explanation of this embodiment, the impeller 56 can also be arranged on the main jet water flow path of the high-pressure flushing mechanism 4. When the high-pressure flushing is started, the strong flushing water flow drives the impeller 56 to rotate at high speed, thereby driving the reflective cleaning mechanism to perform rapid and high-frequency reciprocating movement during the flushing period, achieving strong synchronization between flushing and mechanical cleaning.

[0031] As a further explanation of this embodiment, to facilitate observation of the internal operating status of the equipment, the observation window 81 on the front cover door 8 can be made of high-strength transparent material, and a waterproof lighting lamp can be added inside the housing 1. All components in contact with the slurry, such as the reflector 31, elastic base strip 30, and support rod 40, can have their surfaces treated with anti-corrosion measures or be made of corrosion-resistant materials such as stainless steel. The curvature of the elastic base strip 30 can be ensured to be consistent through a dedicated mold to ensure that the cleaning distance of each reflector unit 3 is relatively uniform.

[0032] As a further explanation of this embodiment, the snap-fit ​​component can be implemented in various ways. For example, the snap-fit ​​component can be an open "C"-shaped ring with an inner diameter slightly smaller than the diameter of the elastic baseband 30, which snaps in through elastic deformation; or, the snap-fit ​​component has a groove in which the elastic baseband 30 is nested, allowing the reflector 31 to slide within a limited range along the arc length of the elastic baseband 30, while also being able to rotate around the elastic baseband 30.

[0033] This invention achieves energy recovery and utilization of process wastewater. The wastewater flowing down from the screen holes of the arc-shaped screen plate 2, originally a waste fluid directly discharged into the filtrate outlet 6, carries kinetic energy that is not effectively utilized. This invention, by placing an impeller 56 in the path of the falling wastewater, converts the impact kinetic energy of the wastewater into the mechanical energy of the rotating shaft 54, which then drives the entire reflective cleaning mechanism to perform lateral reciprocating motion via a crank-slider mechanism. This design allows the reflective cleaning mechanism to operate without additional electrical energy or other external power, achieving a self-circulating energy system of "using waste to treat blockages." Simultaneously, after driving the impeller 56, the wastewater continues to fall and impacts the reflector plate 31, generating an upward splashing water flow that cleans the back of the arc-shaped screen plate 2. This means that the same stream of wastewater completes both the "driving" and "cleaning" functions under gravity, resulting in extremely high energy utilization efficiency. This technical approach of recovering the kinetic energy of waste fluid and using it for equipment self-cleaning demonstrates the significant energy-saving and environmental benefits of this invention.

[0034] Working process: The slurry is evenly distributed onto the arc-shaped screen plate 2 through the feed inlet 5 for screening. The filtrate (i.e., wastewater) falls downwards after passing through the screen holes. This process produces multiple effects: Primary cleaning (hydraulic splashing): The falling wastewater directly impacts the reflector plate 31, is reflected and splashed to form a large number of upward-facing fine water droplets. This process requires no external energy input and relies entirely on the wastewater's own gravitational potential energy and impact kinetic energy. These water droplets continuously and irregularly wash the back of the arc-shaped screen plate 2, flushing away initial blockages from the screen gaps. This method of real-time, continuous cleaning using the wastewater's own energy has significant energy-saving advantages and better anti-clogging effects compared to existing technologies that rely on intermittent high-pressure flushing or externally driven scraping cleaning.

[0035] Power supply and mechanism sway: Part of the falling water flow impacts the impeller 56, providing power to the entire lateral drive mechanism 50, causing the reflector unit 3 to move laterally. At the same time, the uneven impact of the water flow on the reflector unit 3, combined with the elastic suspension assembly 60, causes the reflector unit 3 to produce beneficial overall sway, enhancing the randomness and coverage of the splash.

[0036] Secondary cleaning: Driven by the transverse drive mechanism 50, all reflective units 3 slowly reciprocate laterally. When they move to a specific position, the cleaning part 311 on the reflector plate 31 periodically approaches or even gently contacts the back of the arc-shaped screen plate 2 to scrape off firmly attached impurities and push them out of the screen holes. Since the reflector plate 31 is rotatable and connected by the elastic element 33, this contact is a flexible and adaptive contact that will not damage the arc-shaped screen plate 2.

[0037] The existing high-pressure flushing mechanism 4 can still be started as needed or according to a set cycle to carry out high-intensity fixed-point flushing, which effectively complements the continuous operation of the reflective cleaning mechanism.

[0038] Example 2: Based on Example 1, to further enhance the ability to remove stubborn deposits, the support rod 40 underwent a functional integration design. (Refer to...) Figure 4 The support rod 40 adopts a hollow tubular structure. Its internal cavity is connected to an external high-pressure water source through a rotary sealing joint and pipeline (not shown in the figure). On the tube wall of the support rod 40, one or more rows of injection micro-holes 41 with a diameter of 0.5-1mm are evenly opened along its length direction, and the injection direction of all injection micro-holes 41 is pointing towards the back of the arc-shaped screen plate 2.

[0039] In this embodiment, when the integrated high-pressure water circuit is activated (it can be linked with the original high-pressure flushing mechanism 4 or controlled independently), high-pressure water is ejected at high speed from the jet micro-holes 41, forming a dense high-pressure water jet. Since the support rod 40 is driven by the transverse drive mechanism 50 to reciprocate, these high-pressure water jets constitute a transversely scanning "moving water jet," performing linear and powerful hydraulic cutting and rinsing on the back of the arc-shaped screen plate 2. This constitutes a three-stage cleaning process (moving water jet). At this point, the device integrates three cleaning modes: "moving water jet (line cutting), splash water (surface rinsing), and scraping components (point contact)," constructing a comprehensive three-dimensional composite cleaning system, particularly suitable for treating easily caking or highly viscous slurries.

[0040] The above embodiments are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural modifications made based on the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A pulping and filtering device for papermaking machinery, comprising a housing (1), an arc-shaped screen plate (2) disposed within the housing (1), a feeding mechanism communicating with the feed side of the arc-shaped screen plate (2), a high-pressure rinsing mechanism (4) for rinsing the arc-shaped screen plate (2), and a filtrate outlet (6) and a solids outlet (7) disposed at the bottom of the housing (1), characterized in that, A reflective cleaning mechanism is provided on the discharge side of the arc-shaped screen plate (2); The reflective cleaning mechanism includes multiple sets of reflective units (3) arranged laterally along the arc-shaped sieve plate (2), and a support drive assembly for suspending and driving all the reflective units (3); Each set of the reflective units (3) includes an arc-shaped elastic baseband (30) and reflective plates (31) disposed on both sides of the elastic baseband (30). The reflective plates (31) are connected to the elastic baseband (30) through a connecting component (32) and can rotate relative to the elastic baseband (30). The reflector (31) is configured to receive liquid flowing down from the arc-shaped screen (2) and generate a water flow that splashes toward the back of the arc-shaped screen (2); The support drive assembly includes at least one horizontally arranged support rod (40) and a transverse drive mechanism (50) that drives the support rod (40) to reciprocate along the transverse direction of the arc-shaped screen plate (2); the end of the elastic base band (30) is connected to the support rod (40) through an elastic suspension assembly (60), so that the reflective unit (3) can generate elastic swaying relative to the support rod (40) under the impact of the liquid.

2. The papermaking machinery pulping and filtering device according to claim 1, characterized in that, The transverse drive mechanism (50) includes a crank-slider mechanism, which includes a slider (51), a crank (52) and a connecting rod (53). One end of the crank (52) is fixed to the rotating shaft (54), and the other end is hinged to one end of the connecting rod (53). The other end of the connecting rod (53) is hinged to the slider (51). The slider (51) is slidably engaged with the guide rail (55), and the slider (51) is fixedly connected to the support rod (40).

3. The pulping and filtering device for papermaking machinery according to claim 2, characterized in that, An impeller (56) is provided on the rotating shaft (54). The impeller (56) is located on the wastewater path flowing down from the arc-shaped screen plate (2) or on the jet water path of the high-pressure flushing mechanism (4). The rotating shaft (54) is driven to rotate by the impact of the water flow.

4. The papermaking machinery pulping and filtering device according to claim 1, characterized in that, The reflector plate (31) has a cleaning part (311) on its surface. The cleaning part (311) is configured to clean the sieve holes on the back of the arc-shaped sieve plate (2) when the reflector unit (3) moves laterally and comes into contact with the back of the arc-shaped sieve plate (2).

5. The papermaking machinery pulping and filtering device according to claim 4, characterized in that, The cleaning part (311) is a brush bristle protruding from the surface of the reflector plate (31).

6. The pulping and filtering apparatus for papermaking machinery according to claim 1, characterized in that, The elastic suspension assembly (60) includes a fixing block (61) fixed to the support rod (40), a guide block (62) fixed to the end of the elastic base band (30), and a guide rod (63) connecting the fixing block (61) and the guide block (62); the guide block (62) is provided with a guide hole that cooperates with the guide rod (63), and a spring (64) is provided between the guide block (62) and the fixing block (61).

7. The pulping and filtering apparatus for papermaking machinery according to claim 1, characterized in that, The connecting component (32) includes a snap-fit ​​member fixed to the reflector (31). The snap-fit ​​member is snapped onto the elastic baseband (30) in a detachable or slidable manner, and allows the reflector (31) to rotate in a limited manner relative to the elastic baseband (30) under the action of external force.

8. The pulping and filtering apparatus for papermaking machinery according to claim 7, characterized in that, The two reflectors (31) located on both sides of the elastic baseband (30) are connected by an elastic element (33).

9. The pulping and filtering apparatus for papermaking machinery according to claim 1, characterized in that, The support rod (40) is a hollow structure, and its inner cavity is connected to a high-pressure water source. The support rod (40) is provided with a number of spray microholes (41) facing the back of the arc-shaped screen plate (2).

10. The pulping and filtering apparatus for papermaking machinery according to claim 9, characterized in that, There are two support rods (40), located at the upper and lower ends of all the reflective units (3), respectively.

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