A beater for corrugated board production

Abstract

The application relates to a beating machine for corrugated paperboard production, which comprises a tank body with a chamber in the inside, an inner cylinder is arranged in the chamber, a plurality of through holes are formed in the inner cylinder, a pulping crushing chamber is arranged in the inside of the inner cylinder, and a buffer chamber for storing paper pulp is formed in the outside of the inner cylinder by the inner cylinder; two fly cutter rollers are arranged in the inside of the buffer chamber and rotate oppositely, a driving element is arranged above the tank body, and a circulating unit is further arranged on the tank body; the beating machine can make the paper pulp in the buffer chamber return to the crushing chamber for circulating crushing for multiple times through cooperation of the driving element, the fly cutter rollers and the circulating unit, different raw materials with different particle sizes continuously receive the cutting action of the fly cutter rollers in the multiple circulating processes, the size difference of the raw material particles is effectively reduced, and the uniformity of the paper pulp is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of pulp production technology, and in particular to a pulping machine for corrugated cardboard production. Background Technology

[0002] In the corrugated board manufacturing industry, pulping is one of the production processes. High-quality pulp can give corrugated board good strength, flexibility and uniformity, thereby improving its applicability and competitiveness in the packaging field.

[0003] In existing pulping machines, raw materials undergo only one crushing process within the tank during operation. It is difficult for raw materials of different particle sizes to achieve a uniform degree of crushing in a short time. Some larger particles may not be fully crushed, resulting in poor uniformity. Specifically, existing pulping machines lack an effective circulation mechanism. After the raw materials are crushed once in the tank, they enter the subsequent pulping process and are not convenient to return to the crushing area for repeated crushing. This prevents some raw materials that have not reached the ideal degree of crushing from being processed again, leading to uneven pulp particle size, uneven fiber distribution in paperboard, and affecting the quality of the paperboard.

[0004] To address the aforementioned issues, a pulping machine for corrugated cardboard production is now designed. Utility Model Content

[0005] This application provides a pulping machine for corrugated cardboard production to solve the problem that existing pulping machines in the related art lack an effective circulation mechanism. After the raw materials are crushed once in the tank, they enter the subsequent pulping process and it is not convenient to return to the crushing area for repeated crushing.

[0006] In a first aspect, a pulping machine for corrugated cardboard production is provided, comprising:

[0007] The tank has a cavity inside, and an inner cylinder is provided inside the cavity. The inner cylinder has multiple through holes. The inner cylinder has a pulping chamber inside, and the inner cylinder divides the cavity to form an external buffer chamber for storing pulp.

[0008] The buffer chamber contains two flying knife rollers that rotate relative to each other, and a driving component is located above the tank body to drive the flying knife rollers to rotate.

[0009] The tank is also equipped with a circulation unit, which is used to pump the pulp inside the buffer chamber to the crushing chamber.

[0010] The cleaning mechanism includes a cleaning ring slidably disposed on the outer wall of the inner cylinder, and a power unit disposed above the tank body, the power unit being used to drive the cleaning ring to move along the length of the inner cylinder.

[0011] In some embodiments, the flying knife roller includes a roller shaft and a plurality of cutting blades arranged sequentially along the length of the roller shaft. The cutting blades on the left and right sides are arranged alternately in a vertical arrangement, with a gap between two adjacent vertically arranged cutting blades.

[0012] The cutting blade includes a blade ring disposed on the roller shaft, and multiple arc-shaped blades distributed in a ring on the blade ring.

[0013] In some embodiments, the drive unit includes a housing disposed on the tank body, with two rotating shafts rotatably mounted inside the housing body. Gears are disposed on the rotating shafts, and the two gears mesh with each other. The bottom end of the rotating shaft passes through the tank body and is connected to the top end of a corresponding roller shaft.

[0014] A reducer and a drive motor are provided at the top of the housing. The output shaft of the drive motor is connected to the input shaft of the reducer. The output shaft of the reducer extends into the housing and is connected to the top of any rotating shaft.

[0015] In some embodiments, the circulation unit includes a mounting base disposed at the bottom of the tank, a pump body disposed on the mounting base, the inlet of the pump body being connected to a circulation pipe, and the other end of the circulation pipe being connected to the bottom of the buffer chamber;

[0016] The outlet of the pump body is connected to a second circulation pipe, and the other end of the second circulation pipe is connected to the pulverizing chamber.

[0017] In some embodiments, the cleaning ring includes a circular ring arranged on the outside of the inner cylinder, the inner side of which is provided with bristles that fit into the through hole.

[0018] In some embodiments, the power unit includes an electric push rod mounted on the tank body and a fixed block mounted on a ring, with the bottom end of the piston rod of the electric push rod connected to the fixed block.

[0019] In some embodiments, the tank body is provided with a feeding hopper communicating with the crushing chamber, and the bottom of the tank body is provided with a discharge valve communicating with the buffer chamber.

[0020] This application provides a pulping machine for corrugated cardboard production. Through the coordinated use of a drive unit, a flying knife roller, and a circulation unit, the pulp in the buffer chamber can be returned to the crushing chamber multiple times for cyclic crushing. Raw materials of different particle sizes are continuously subjected to the cutting action of the flying knife roller during multiple cycles, which effectively reduces the size difference of raw material particles and significantly improves the uniformity of the pulp.

[0021] The cleaning mechanism can clean the through holes regularly or as needed, promptly removing blockages, ensuring normal pulp flow and smooth crushing process, helping to reduce equipment failures, extend equipment lifespan, reduce maintenance costs, and improve production continuity and stability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this application;

[0024] Figure 2 Left sectional view of the inner cylinder and tank body connection structure provided in the embodiments of this application;

[0025] Figure 3 This is a front sectional view of the connection structure between the drive unit and the fly cutter roller provided in the embodiments of this application;

[0026] Figure 4 This is a three-dimensional schematic diagram of the assembly of two flying knife rollers provided in an embodiment of this application;

[0027] Figure 5 A three-dimensional schematic diagram of the cutting blade provided in the embodiments of this application;

[0028] Figure 6 Provided for the embodiments of this application Figure 3 Enlarged view of point A in the middle.

[0029] In the diagram: 1. Tank body; 11. Chamber; 2. Inner cylinder; 3. Crushing chamber; 4. Buffer chamber; 5. Flying knife roller; 6. Drive unit; 7. Circulation unit; 8. Cleaning mechanism; 9. Feed hopper; 10. Discharge valve; 21. Through hole; 3. Crushing chamber; 51. Roller shaft; 52. Cutting knife; 521. Knife ring; 522. Arc blade; 61. Shell; 62. Rotating shaft; 63. Gear; 64. Reducer; 65. Drive motor; 71. Mounting base; 72. Pump body; 73. Circulation pipe one; 74. Circulation pipe two; 81. Cleaning ring; 82. Power unit; 811. Ring; 812. Brush; 821. Electric push rod; 822. Fixing block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This application provides a pulping machine for corrugated cardboard production, which solves the problem that existing pulping machines in the related technology lack an effective circulation mechanism. After the raw materials are crushed once in the tank, they enter the subsequent pulping process and it is not convenient to return to the crushing area for repeated crushing.

[0032] Please see Figures 1-3 A pulping machine for corrugated cardboard production includes: a tank 1 having a chamber 11 inside, an inner cylinder 2 inside the chamber 11, a plurality of through holes 21 on the inner cylinder 2, a pulping chamber 3 inside the inner cylinder 2, and an outer buffer chamber 4 for storing pulp formed by the inner cylinder 2 separating the chamber 11.

[0033] The buffer chamber 4 contains two flying knife rollers 5 that rotate relative to each other. Above the tank body 1 is a driving component 6, which is used to drive the flying knife rollers 5 to rotate.

[0034] The tank body 1 is also provided with a circulation unit 7, which is used to pump the pulp inside the buffer chamber 4 into the crushing chamber 3.

[0035] The cleaning mechanism 8 includes a cleaning ring 81 slidably disposed on the outer wall of the inner cylinder 2, and a power unit 82 disposed above the tank body 1. The power unit 82 is used to drive the cleaning ring 81 to move along the length of the inner cylinder 2. The inner cylinder 2 is cylindrical, and the through holes 21 are arranged in a ring on the side wall of the inner cylinder 2.

[0036] The raw materials required for corrugated cardboard production, such as waste paper, wood pulp, water, and additives, are fed into the crushing chamber 3 inside the inner cylinder 2. The drive unit 6 is activated, causing the two flying knife rollers 5 inside the buffer chamber 4 to rotate relative to each other, cutting and crushing the raw materials to achieve preliminary crushing.

[0037] After initial crushing, the raw material particles enter the external buffer chamber 4 through the through-hole 21 on the inner cylinder 2. In the buffer chamber 4, under the stirring action generated by the continuous rotation of the flying knife roller 5, pulp is gradually formed. The inner cylinder 2 divides the chamber 11 into the crushing chamber 3 and the buffer chamber 4, making the crushing and pulp buffering processes relatively independent yet interconnected. When a certain amount of pulp accumulates in the buffer chamber 4, the circulation unit 7 of the tank 1 is activated. The circulation unit 7 sucks out the pulp from the buffer chamber 4 and transports it back to the crushing chamber 3. In this way, the pulp in the buffer chamber 4 can re-enter the crushing chamber 3 to receive further crushing treatment from the flying knife roller 5. Through multiple cycles, the raw materials are more thoroughly crushed, improving the uniformity and quality of the pulp.

[0038] After the pulper has been running for a period of time, the through holes 21 on the inner cylinder 2 may be blocked by fibers and impurities in the pulp. Start the power unit 82 to drive the cleaning ring 81 to move along the length of the inner cylinder 2 to clean the through holes 21, remove the fibers and impurities blocking the through holes 21, ensure that the through holes 21 are unobstructed, and maintain the normal operation of the equipment.

[0039] By using the drive unit 6, the flying knife roller 5 and the circulation unit 7 together, the pulp in the buffer chamber 4 can be returned to the crushing chamber 3 for repeated crushing. During the repeated cycles, raw materials of different particle sizes are continuously cut by the flying knife roller 5, which effectively reduces the size difference of raw material particles and significantly improves the uniformity of pulp.

[0040] The cleaning mechanism 8 can clean the through hole 21 periodically or as needed, promptly removing blockages, ensuring normal pulp flow and smooth crushing process, helping to reduce equipment failures, extend equipment lifespan, reduce maintenance costs, and improve production continuity and stability.

[0041] like Figure 4 and Figure 5 As shown, in one embodiment, the flying knife roller 5 includes a roller shaft 51, and a plurality of cutting blades 52 arranged sequentially along the length of the roller shaft 51. The cutting blades 52 on the left and right sides are staggered vertically, with a gap between adjacent vertically arranged cutting blades 52. Each cutting blade 52 includes a blade ring 521 disposed on the roller shaft 51, and a plurality of arc-shaped blades 522 arranged in a ring on the blade ring 521. The bottom end of the roller shaft 51 is rotatably connected to the bottom of the inner cylinder 2.

[0042] When the pulper starts working, the raw material is fed into the crushing chamber 3 inside the inner cylinder 2. The bottom end of the roller 51 is rotatably connected to the bottom of the inner cylinder 2. The entire flying knife roller 5 is in a stable and rotatable state. As the drive component 6 starts and drives the flying knife roller 5 to rotate, the raw material gradually begins to contact the cutting blade 52 on the flying knife roller 5.

[0043] When the raw material comes into contact with the curved blade 522, the cutting edge of the curved blade 522 applies a cutting force to the raw material, gradually cutting it into smaller particles. As the flying knife roller 5 continues to rotate, the raw material is continuously cut by the cutting blade 52, achieving initial crushing.

[0044] The staggered distribution of the cutting blades 52 and the increased contact area and cutting frequency between the cutting blades 52 and the raw materials through the arc-shaped blades 522 improve the efficiency of the initial crushing. At the same time, the cyclic crushing process further enhances the crushing effect.

[0045] like Figure 1 and Figure 3 As shown, in one embodiment, the driving component 6 includes a housing 61 disposed on the tank body 1. Inside the housing 61, there are two rotating shafts 62 that rotate relative to each other. Gears 63 are disposed on the rotating shafts 62, and the two gears 63 mesh with each other. The bottom end of the rotating shaft 62 passes through the tank body 1 and is connected to the top end of the corresponding roller shaft 51. A reducer 64 and a drive motor 65 are disposed at the top end of the housing 61. The output shaft of the drive motor 65 is connected to the input shaft of the reducer 64. The output shaft of the reducer 64 extends into the housing 61 and is connected to the top end of either rotating shaft 62.

[0046] When the drive motor 65 is started, it begins to run, and its output shaft rotates accordingly, transmitting power to the input shaft of the reducer 64 connected to it. The reducer 64 reduces the high-speed rotational power output by the drive motor 65, causing its output shaft to rotate at a suitable speed. The reduced power is then transmitted to the rotating shaft 62. Since the two gears 63 mesh with each other, the rotating gear 63 will drive the other gear 63 to rotate in the opposite direction, thereby causing the other rotating shaft 62 to rotate in the opposite direction as well. The relative rotation of the two rotating shafts 62 is achieved through gear transmission.

[0047] As the rotating shaft 62 rotates, the roller shaft 51 also rotates synchronously, and the cutting blade 52 also rotates accordingly, thereby cutting and crushing the raw materials in the crushing chamber 3 of the inner cylinder 2. The flying blade rollers 5 on the left and right sides rotate relative to each other under the drive of gear transmission, which can cut the raw materials from different directions, improving cutting efficiency and crushing effect.

[0048] like Figure 1 and him Figure 3 As shown, it should be noted that the circulation unit 7 in this embodiment includes a mounting base 71 disposed at the bottom of the tank 1, a pump body 72 disposed on the mounting base 71, the inlet of the pump body 72 being connected to a circulation pipe 73, the other end of the circulation pipe 73 being connected to the bottom of the buffer chamber 4; the outlet of the pump body 72 being connected to a circulation pipe 74, the other end of the circulation pipe 74 being connected to the crushing chamber 3.

[0049] As the raw materials are continuously crushed and mixed with media such as water, a certain amount of pulp gradually accumulates in the buffer chamber 4. The pump body 72 is started and begins to work, creating a negative pressure inside. This causes the circulation pipe 73 connected to the inlet of the pump body 72 to generate suction. The circulation pipe 73 draws pulp from the bottom of the buffer chamber 4. Since there are many insufficiently crushed raw material particles and impurities settled at the bottom, drawing pulp from the bottom ensures that these substances that need further processing are reintroduced into the crushing process.

[0050] Pump body 72 pumps the sucked pulp through the outlet to circulation pipe 2 74. The pulp is transported back to crushing chamber 3 along circulation pipe 2 74. The pulp entering crushing chamber 3 is cut and crushed again by flying knife roller 5, and the raw material particles that are not fully crushed are further refined.

[0051] In this embodiment, the pump body 72, as the core component of the circulation unit 7, needs to meet the requirements of conveying high-concentration pulp, wear resistance, and adaptability to continuous working conditions. In combination with the characteristics of pulp and process requirements, a centrifugal pulp circulation pump is adopted, and the model can be KSB MCC 800-950Ⅱ. This is existing technology and will not be described in detail here.

[0052] like Figure 2 , Figure 3 and Figure 6 As shown, the cleaning ring 81 in this embodiment includes a circular ring 811 arranged on the outside of the inner cylinder 2, and bristles 812 are provided on the inner side of the circular ring 811, and the bristles 812 are in contact with the through hole 21.

[0053] The bristles 812 fit snugly against the through-hole 21. During the up-and-down movement, the bristles 812 can penetrate deep into the through-hole 21. Due to the soft and elastic nature of the bristles 812, they can flexibly adapt to the shape and size of the through-hole 21, cleaning off pulp fibers, impurities, and other debris adhering to the inner wall of the through-hole 21. As the movement continues, the bristles 812 continuously clean the through-hole 21, ensuring that the through-hole 21 remains unobstructed.

[0054] The pulp fibers and impurities swept off will be carried away by the pulp flow and will not accumulate near the through hole 21. This ensures that the through hole 21 on the inner cylinder 2 can always allow the pulp to flow normally from the crushing chamber 3 into the buffer chamber 4, maintaining the normal flow and circulation of pulp inside the pulper, so that the entire pulping process can proceed smoothly.

[0055] like Figure 1 and Figure 3 As shown, in one embodiment, the power unit 82 includes an electric push rod 821 disposed on the tank body 1 and a fixing block 822 disposed on the ring 811, with the bottom end of the piston rod of the electric push rod 821 connected to the fixing block 822.

[0056] Upon receiving the start signal, the electric push rod 821 begins to work. The motor inside the electric push rod 821 operates, driving the lead screw to rotate, thereby converting the rotational motion into the linear motion of the piston rod. The piston rod extends or retracts according to the rotation direction of the motor.

[0057] The bottom end of the piston rod of the electric push rod 821 is connected to the fixed block 822 set on the ring 811. When the piston rod extends, it pushes the ring 811 downward along the outer side of the inner cylinder 2 through the fixed block 822. When the piston rod retracts, it pulls the ring 811 upward. Since the inner side of the ring 811 is provided with bristles 812, during the movement, the bristles 812 will clean the through hole 21 on the inner cylinder 2 and remove the pulp fibers, impurities and other debris attached to the inner wall of the through hole 21.

[0058] The electric push rod 821 can reciprocate according to a preset program, that is, the piston rod extends and retracts at regular intervals, driving the ring 811 to move up and down on the outside of the inner cylinder 2. Through this reciprocating motion, the bristles 812 can clean the through hole 21 multiple times to ensure that the through hole 21 remains unobstructed.

[0059] like Figure 1 and Figure 2 As shown, in this embodiment, the tank body 1 is provided with a feeding hopper 9 that communicates with the crushing chamber 3, and the bottom of the tank body 1 is provided with a discharge valve 10 that communicates with the buffer chamber 4.

[0060] Before the pulper starts working, the operator puts the raw materials to be processed, such as waste paper, wood pulp, water and additives, into the feed hopper 9. After the raw materials enter the crushing chamber 3, they begin to be crushed under the action of components such as the flying knife roller 5.

[0061] Once the pulp reaches the required fineness and quality, the discharge valve 10 located at the bottom of tank 1 is opened. The pulp stored in the buffer chamber 4 is discharged from tank 1 through the discharge valve 10 under the action of gravity and enters the subsequent production process.

[0062] The feeding hopper 9 is a funnel-shaped structure that is wider at the top and narrower at the bottom. The upper opening is relatively large, which makes it easy for operators to quickly and easily feed in a large amount of raw materials. The lower opening matches the inlet of the crushing chamber 3, ensuring that the raw materials can enter the crushing chamber 3 accurately and smoothly.

[0063] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pulping machine for corrugated cardboard production, characterized in that, include: The tank (1) has a chamber (11) inside, and an inner cylinder (2) is provided inside the chamber (11). The inner cylinder (2) has multiple through holes (21) and a pulping chamber (3) inside. The inner cylinder (2) divides the chamber (11) to form an external buffer chamber (4) for storing pulp. The buffer chamber (4) has two flying knife rollers (5) that rotate relative to each other. Above the tank (1) is a drive unit (6) that drives the flying knife rollers (5) to rotate. The tank (1) is also provided with a circulation unit (7), which is used to pump the pulp inside the buffer chamber (4) to the crushing chamber (3); The cleaning mechanism (8) includes a cleaning ring (81) slidably disposed on the outer wall of the inner cylinder (2) and a power unit (82) disposed above the tank body (1), the power unit (82) being used to drive the cleaning ring (81) to move along the length of the inner cylinder (2).

2. The pulping machine for corrugated cardboard production as described in claim 1, characterized in that: The flying knife roller (5) includes a roller shaft (51) and a plurality of cutting blades (52) arranged sequentially along the length of the roller shaft (51). The cutting blades (52) on the left and right sides are arranged alternately in a staggered manner, and there is a gap between two adjacent cutting blades (52) arranged vertically. The cutting blade (52) includes a blade ring (521) disposed on the roller (51) and a plurality of arc-shaped blades (522) distributed in a ring on the blade ring (521).

3. The pulping machine for corrugated cardboard production as described in claim 2, characterized in that: The drive unit (6) includes a housing (61) disposed on the tank (1), and two rotating shafts (62) are disposed inside the housing (61) for relative rotation. Gears (63) are disposed on the rotating shafts (62), and the two gears (63) mesh with each other. The bottom end of the rotating shaft (62) passes through the tank (1) and is connected to the top end of the corresponding roller shaft (51). The top of the housing (61) is provided with a reducer (64) and a drive motor (65). The output shaft of the drive motor (65) is connected to the input shaft of the reducer (64). The output shaft of the reducer (64) extends into the housing (61) and is connected to the top of any rotating shaft (62).

4. The pulping machine for corrugated cardboard production as described in claim 1, characterized in that: The circulation unit (7) includes a mounting base (71) at the bottom of the tank (1), a pump body (72) is provided on the mounting base (71), the inlet of the pump body (72) is connected to a circulation pipe (73), and the other end of the circulation pipe (73) is connected to the bottom of the buffer chamber (4). The outlet of the pump body (72) is connected to a second circulation pipe (74), and the other end of the second circulation pipe (74) is connected to the crushing chamber (3).

5. A pulping machine for corrugated cardboard production as described in claim 1, characterized in that: The cleaning ring (81) includes a ring (811) arranged on the outside of the inner cylinder (2), and bristles (812) are provided on the inner side of the ring (811), and the bristles (812) are in contact with the through hole (21).

6. The pulping machine for corrugated cardboard production as described in claim 5, characterized in that: The power unit (82) includes an electric push rod (821) mounted on the tank (1) and a fixing block (822) mounted on the ring (811). The bottom end of the piston rod of the electric push rod (821) is connected to the fixing block (822).

7. A pulping machine for corrugated cardboard production as described in claim 1, characterized in that: The tank (1) is provided with a feeding hopper (9) that communicates with the crushing chamber (3), and the bottom of the tank (1) is provided with a discharge valve (10) that communicates with the buffer chamber (4).

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