Single-shaft extrusion tearing machine

Abstract

A single-shaft extrusion tearing machine comprises a horizontal feeding barrel and a rotor assembly arranged in the feeding barrel in a penetrating mode, a feeding port is formed in the side wall of the top of the feeding barrel, the tail end of the feeding barrel is fixedly communicated with a screen cylinder assembly, spiral blades are arranged on the periphery of the rotor assembly, and the tail end of the rotor assembly extends to the tail end of the screen cylinder assembly. A cylindrical rubbing knife seat is fixed to the end face of the tail end of the rotor assembly, a plurality of rubbing knives are evenly fixed to the periphery of the rubbing knife seat, and a discharging port is formed in the tail end, at the rubbing knives, of the screen cylinder assembly. In the process that fiber raw materials continuously roll and move in a working area, heat can be generated due to friction between equipment and the materials and between the materials, lignin among fibers can be softened due to temperature rise, and therefore binding force among the fibers is reduced. And moisture and air among the fiber raw material components are expanded due to heat absorption, so that stripping among fibers is promoted, and fiber materials such as bamboo chips, wood chips, straws, cotton stalks and the like are torn more thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking machinery and equipment, and specifically relates to a single-shaft extrusion tearing machine. Background Art

[0002] For the pretreatment section of chemical mechanical pulp and semi-chemical pulp of fiber materials such as bamboo chips, wood chips, straws, cotton stalks, etc., shredding machines, crushers and other crushing equipment are required. At present, the existing shredding machines and crushers do not thoroughly tear the fiber materials such as bamboo chips, wood chips, straws, cotton stalks, etc., which easily causes large pieces of materials to flow into the next process, is not conducive to processing into chemical mechanical pulp and semi-chemical pulp, and thus affects the quality of subsequent paper. Content of the Utility Model

[0003] In order to solve the above problems, the purpose of the utility model is to provide a single-shaft extrusion tearing machine.

[0004] To achieve the above purpose, the technical solution of the utility model is: a single-shaft extrusion tearing machine, which includes a horizontal feeding cylinder and a rotor assembly penetrating through the feeding cylinder. An inlet is arranged on the top side wall of the feeding cylinder, and a screen drum assembly is fixedly connected to the end of the feeding cylinder. A spiral blade is arranged on the periphery of the rotor assembly, and the end of the rotor assembly extends to the end of the screen drum assembly. A cylindrical rubbing knife seat is fixedly arranged on the end face of the rotor assembly, and a plurality of rubbing knives are evenly fixed on the periphery of the rubbing knife seat. An outlet is arranged at the end of the screen drum assembly at the rubbing knife position.

[0005] Further, the rotating shaft of the rotor assembly gradually becomes thicker from the feeding end to the discharging end, and there is a gap between the outer edge of the spiral blade and the feeding cylinder as well as the screen drum assembly.

[0006] Further, the rubbing knife is an arc-shaped long strip, and the outer side is provided with a tooth-shaped step structure arranged along its length direction. There is a gap between the outermost end of the tooth-shaped step structure and the inner side wall of the screen drum assembly.

[0007] Further, the spiral blade in the screen drum assembly is provided with a dividing notch that divides the spiral blade into multiple segments.

[0008] Further, the outlet is horn-shaped, and an outlet spiral fixedly connected to the end of the rubbing knife seat is arranged inside.

[0009] Further, a cleaning cylinder is sleeved and fixed on the periphery of the screen drum assembly. A plurality of cleaning pipes are arranged in the cleaning cylinder. Each cleaning pipe is respectively communicated with an external water supply device through a water inlet joint penetrating through the side wall of the cleaning cylinder. A water receiving tray is arranged at the bottom of the cleaning cylinder.

[0010] Further, the feeding cylinder and the screen drum assembly are fixed on a machine base.

[0011] Further, the rotor assembly is driven to rotate by a speed reducer driven by a motor.

[0012] Furthermore, the speed reducer and the rotor assembly are connected by a coupling in a transmission manner, and one end of the coupling is supported by a plurality of bearing assemblies.

[0013] With the above settings, the present utility model has the following advantages:

[0014] 1. The single-shaft extrusion and tearing machine of the present utility model is a device for pre-rubbing and grinding raw materials such as bamboo chips, wood chips, and straws that have been softened and pretreated under a high-concentration state (above 30%), which can effectively ensure the fiber length of the raw materials and is beneficial to improving the pulp quality.

[0015] 2. The increased specific surface area of the fiber raw materials and the vacuum formed inside can ensure more uniform absorption of the liquid medicine, thus ensuring more uniform and sufficient reaction, shortening the reaction time, and reducing the consumption of medicines.

[0016] 3. During the process of the fiber raw materials continuously tumbling and moving in the working area, heat will be generated due to friction between the equipment and the materials, and between the materials. The increase in temperature will soften the lignin between the fibers, resulting in a decrease in the bonding force between the fibers. In addition, the moisture and air between the components of the fiber raw materials will also expand in volume due to heat absorption, thus promoting the peeling between the fibers and tearing the fiber materials such as bamboo chips, wood chips, straws, and cotton stalks more thoroughly.

[0017] 4. The present utility model has a small floor area, low power consumption, is convenient for maintenance, disassembly, and installation, is easy to operate, and has a low operating cost.

[0018] 5. The main body of the present utility model adopts a split structure, which is convenient for equipment installation and on-site maintenance by users.

[0019] 6. All parts of the present utility model that come into contact with the materials are made of 2Cr13 wear-resistant stainless steel after quenching, and the outer shaft of the rotor assembly is sprayed with tungsten carbide, which improves the wear resistance of the pulping area and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described in conjunction with the accompanying drawings.

[0021] Figure 1 is the front view structural schematic diagram of the present utility model;

[0022] Figure 2 is the top view structural schematic diagram of the present utility model;

[0023] Figure 3 is the front view internal structural schematic diagram of the present utility model;

[0024] Figure 4 is the partial structural schematic diagram of the rotor assembly of the present utility model;

[0025] Figure 5 This is a schematic diagram of the main structure of the utility model in the installation state of the knife rubbing;

[0026] Figure 6 It is a side view structural diagram of the utility model in the installation state of the knife rubbing;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the utility model knife rubbing;

[0028] Figure 8 This is a physical reference diagram of the present utility model. DETAILED DESCRIPTION

[0029] like Figures 1-7 As shown, a uniaxial extrusion tearing machine comprises a horizontal feed barrel 1 and a rotor assembly 2 which is arranged through the feed barrel 1, a feed port 3 is arranged on the top side wall of the feed barrel 1, a screen drum assembly 4 is connected and fixed to the end of the feed barrel 1, a spiral blade 5 is arranged on the periphery of the rotor assembly 2, and the end of the rotor assembly 2 extends to the end of the screen drum assembly 4, and a cylindrical rubbing knife seat 6 is fixed to the end face of the rotor assembly 2, a plurality of rubbing knives 7 are evenly fixed on the periphery of the rubbing knife seat 6, and a discharge port 8 is arranged on the end of the screen drum assembly 4 at the position of the rubbing knife 7.

[0030] The specific structure of the rotor assembly 2 is as follows: the rotating shaft of the rotor assembly 2 gradually becomes thicker from the feed end to the discharge end, a gap is left between the outer edge of the spiral blade 5 and the feed barrel 1 and the screen drum assembly 4, the rubbing knife 7 is an arc-shaped long strip, and the outer side surface is provided with a tooth-shaped step structure 9 arranged along its long queue direction, the outermost end of the tooth-shaped step structure 9 and the inner side wall of the screen drum assembly 4 have a gap, and the spiral blade 5 in the screen drum assembly 4 is provided with a partition notch 10 that divides the spiral blade 5 into multiple sections.

[0031] The discharge port 8 is trumpet-shaped, and a discharge spiral 11 fixedly connected to the end of the rubbing knife seat 6 is arranged inside.

[0032] A cleaning cylinder 12 is sleeved and fixed on the periphery of the screen drum assembly 4, and a plurality of cleaning pipes 13 are arranged in the cleaning cylinder 12. Each cleaning pipe 13 is connected to an external water supply device via a water inlet joint penetrating the side wall of the cleaning cylinder 12. A water receiving tray 14 is arranged at the bottom of the cleaning cylinder 12.

[0033] Conventional devices can be used for driving, such as the feed barrel 1 and the screen drum assembly 4 are fixed on the machine base 15, the rotor assembly 2 is driven to rotate by the reducer 17 driven by the motor 16, the reducer 17 and the rotor assembly 2 are connected by a coupling 18, and one end of the coupling 18 is supported by multiple bearing assemblies 19.

[0034] Working principle of this utility model:

[0035] 1. Motor 16: Provides sufficient power for the operation of the equipment.

[0036] 2. Reducer 17: Ensure that the equipment rotor runs stably at a certain speed.

[0037] 3. Machine base 15: Used to fix and support each functional component of the equipment, ensuring the overall assembly accuracy and stability of the equipment.

[0038] 4. Bearing assembly 19: Used to ensure the stable operation of the equipment rotor assembly, reduce the running friction coefficient of the equipment, and ensure the rotation accuracy.

[0039] 5. Feed inlet 3: Used to receive materials.

[0040] 6. Rotor assembly 2: Used to convey materials. The change in the diameter of the spiral shaft of the rotor assembly 2 in the length direction causes the rotor main shaft to form a feeding area, a pre-pressing area, a high-pressure area, a tearing area, a rubbing and peeling area, and a discharging area with the feeding cylinder 1 and the screen drum assembly 4 (the feeding cylinder 1 and the screen drum assembly 4 can be integrated) in sequence.

[0041] 7. Screen drum assembly 4: The exudate generated by the extrusion of materials is discharged through the pores distributed on the screen drum, enters the water receiving chassis, and is discharged from the equipment.

[0042] 8. Water receiving tray 14: Used to receive the exudate generated by the extrusion of materials and discharge it from the equipment.

[0043] 9. Discharge outlet 8: The qualified materials after being processed by the equipment enter the subsequent process equipment through the discharge outlet.

[0044] 10. Coupling 18: Used for power transmission between the reducer and the main machine.

[0045] Working process:

[0046] First, turn on the motor 16. After the reducer 17 and the rotor assembly 2 run smoothly, turn on the feed conveyor. The materials with a certain shape and size after pretreatment enter the equipment interior evenly through the conveying equipment from the feed inlet 3. The spiral blades of the rotor assembly 2 force the materials into the cavity formed by the rotor main shaft and the screen drum assembly, and pass through the pre-pressing area, high-pressure area, tearing area, and peeling area in sequence. The qualified materials after being processed are discharged from the equipment through the discharge outlet 8.

[0047] The preliminarily softened materials enter the feed inlet 3 of the equipment through the feeding device. The materials move in the inner cavity formed by the rotor main shaft, the feeding cylinder 1, and the screen drum assembly 4. After the radial compression of the spiral shaft and the axial compression of the pitch reduction, the bulk materials are deformed due to extrusion. The squeezed black liquor is discharged through the filter drum. After the liquid inside the fiber cell cavity is squeezed out, a certain vacuum degree is formed, which is beneficial to absorbing the liquid medicine, reducing the cooking time in the subsequent stage, reducing the dosage of the liquid medicine at the same time, reducing the pulping cost, and improving the pulp quality.

[0048] When the raw materials pass through the star-shaped arranged rubbing knives 7 installed at the end of the rotor main shaft, within the gap between the rubbing knives 7 and the inner wall of the (sieve drum assembly 4), the relative movement between the moving materials and the serrated rubbing knives generates frictional force, which causes the bonding force between fibers to decrease or even be misaligned and dissociated. The specific surface area of the fiber raw materials increases, and a certain degree of vacuum is formed after the liquid inside the fiber cell cavity is squeezed out, thus being more conducive to the uniform absorption of the subsequent liquid medicine, reducing the cooking reaction time in the later stage, lowering the pulping cost, and improving the pulp quality.

[0049] The above description is only a schematic specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present utility model shall fall within the scope of protection of the present utility model.

Claims

1. A uniaxial extrusion tearing machine, comprising a horizontal feeding barrel (1) and a rotor assembly (2) disposed through the feeding barrel (1), characterized in that: A feed port (3) is provided on the top side wall of the feed barrel (1), a screen drum assembly (4) is connected and fixed to the end of the feed barrel (1), a spiral blade (5) is provided on the periphery of the rotor assembly (2), and the end of the rotor assembly (2) extends to the end of the screen drum assembly (4), and a cylindrical rubbing knife seat (6) is fixed to the end surface of the end of the rotor assembly (2), a plurality of rubbing knives (7) are evenly fixed on the periphery of the rubbing knife seat (6), and a discharge port (8) is provided on the end of the screen drum assembly (4) at the rubbing knife (7) position.

2. A uniaxial extrusion tearing machine according to claim 1, characterized in that: The rotating shaft of the rotor assembly (2) gradually becomes thicker from the feed end to the discharge end, and a gap is left between the outer edge of the spiral blade (5) and the feed barrel (1) and the screen drum assembly (4).

3. A uniaxial extrusion tearing machine according to claim 1, characterized in that: The rubbing knife (7) is in the shape of an arc-shaped strip, and the outer side surface is provided with a tooth-shaped step structure (9) arranged along the longitudinal direction thereof, and a gap is left between the outermost end of the tooth-shaped step structure (9) and the inner side wall of the screen drum assembly (4).

4. A uniaxial extrusion tearing machine according to claim 1, characterized in that: The spiral blade (5) in the screen drum assembly (4) is provided with a separation notch (10) for dividing the spiral blade (5) into multiple sections.

5. The uniaxial extrusion tearing machine according to claim 1, characterized in that: The discharge port (8) is trumpet-shaped and is provided with a discharge spiral (11) fixedly connected to the end of the knife rubbing seat (6) inside.

6. The uniaxial extrusion tearing machine according to claim 1, characterized in that: A cleaning cylinder (12) is sheathed and fixed on the periphery of the screen drum assembly (4), and a plurality of cleaning pipes (13) are arranged in the cleaning cylinder (12). Each cleaning pipe (13) is connected to an external water supply device via a water inlet joint penetrating the side wall of the cleaning cylinder (12), and a water receiving tray (14) is arranged at the bottom of the cleaning cylinder (12).

7. The uniaxial extrusion tearing machine according to claim 1, characterized in that: The feed barrel (1) and the screen drum assembly (4) are fixed on a machine base (15).

8. The uniaxial extrusion tearing machine according to claim 1, characterized in that: The rotor assembly (2) is driven to rotate by a reducer (17) driven by a motor (16).

9. The uniaxial extrusion tearing machine according to claim 1, characterized in that: The reducer (17) and the rotor assembly (2) are connected in transmission via a coupling (18), and one end of the coupling (18) is supported by a plurality of bearing assemblies (19).

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