A cleaning device for a fiber screen of a fiber shredder

Abstract

The utility model relates to a crushing equipment technical field especially, it is a kind of cleaning device for fibre screen for fibre grinder, fibre grinder includes machine body, the main shaft for installing dynamic cutter wheel is rotated to be arranged in the machine body inside, and the interlayer screen is set in the dynamic cutter wheel below, cleaning device includes: at least two independent fluid channels of being set in the inside of main shaft, the periphery wall of main shaft is opened with the injection port of intercommunication with fluid channel;Swivel joint, the fluid channel entrance of swivel joint's output end and main shaft input end is connected, its input end is connected with the medium supply system outside.This embodiment of the utility model is by two independent fluid channels integrated in the inside of main shaft, when the main shaft rotates, the process of high-temperature pre-drying, atomization softening, airflow purging is executed to screen, so that screen can be cleaned on line.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a cleaning device for fiber screens in a fiber crusher. Background Technology

[0002] When a fiber crusher crushes fibrous materials, especially those containing a certain amount of moisture or viscosity, the fine fibers tend to adhere to the high-speed rotating blades and the sandwich screen.

[0003] Over time, the accumulated material will clog the screen holes, reduce screening efficiency, and increase the rotational resistance of the moving cutter wheel, resulting in increased energy consumption and decreased output. In addition, the accumulation of material may also cause abnormal temperature rise inside the equipment, affecting product quality and even posing safety hazards.

[0004] Traditional cleaning methods usually require manual cleaning after the machine is stopped, which is not only time-consuming and labor-intensive, affecting the continuity of production, but also makes it difficult to guarantee uniform and thorough cleaning results. Utility Model Content

[0005] The purpose of this invention is to provide a cleaning device that solves the technical problem of difficulty in online and efficient cleaning of the internal moving blades and interlayer screens of existing fiber crushers.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: A cleaning device for a fiber screen in a fiber shredder, the fiber shredder comprising a machine body, a main shaft rotatably disposed within the machine body for mounting a movable cutter wheel, and a sandwich screen disposed below the movable cutter wheel. The cleaning device includes: At least two independent fluid channels are provided inside the main shaft, and an injection port communicating with the fluid channels is provided on the outer peripheral wall of the main shaft; A rotary joint, the output end of which is connected to the fluid channel inlet of the spindle input end, and its input end is connected to an external media supply system.

[0007] Furthermore, the two independent fluid channels are a gas channel for conveying gas and an atomized cleaning liquid channel for conveying atomized cleaning liquid.

[0008] Furthermore, on the input end face of the main shaft, the inlet of the atomized cleaning fluid channel is located at the axis of the main shaft, and the inlet of the gas channel is annular and concentrically surrounds the inlet of the atomized cleaning fluid channel.

[0009] Furthermore, the rotary joint has a concentric dual-channel output structure that matches the spindle input end face.

[0010] Furthermore, the medium supply system includes a gas supply assembly connected to the gas channel, the gas supply assembly including a compressor and an air heater, the air heater being installed on the pipeline from the compressor to the rotary joint.

[0011] Furthermore, by turning the air heater on or off, high-temperature airflow or normal-temperature airflow can be selectively delivered into the gas channel.

[0012] Furthermore, the media supply system includes a cleaning fluid supply assembly connected to the atomized cleaning fluid channel, the cleaning fluid supply assembly including a cleaning fluid pump and an atomizing nozzle.

[0013] Furthermore, the injection port is arranged radially along the main shaft to spray the medium from inside the main shaft outward to the moving cutter wheel and the sandwich screen.

[0014] Furthermore, the cleaning device also includes a controller electrically connected to the media supply system for time-sharing control of the delivery of different media into the fluid channel.

[0015] Furthermore, the media supply system includes multiple solenoid valves and switches controlled by the controller. The controller controls the start and stop of the compressor, air heater, and cleaning fluid pump by controlling the solenoid valves and switches.

[0016] Compared with the prior art, this application has the following advantages: The embodiments of this utility model utilize two independent fluid channels integrated inside the main shaft to perform high-temperature pre-drying, atomization softening, and airflow purging processes on the screen while the main shaft rotates, enabling the screen to be cleaned online. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a fiber shredder equipped with an embodiment of this utility model; Figure 2 This is a cross-sectional view of the spindle and its rotary joint according to an embodiment of the present utility model; The labels in the diagram represent the following: 1-Gas channel; 2-Atomized cleaning fluid channel; 3-Main body; 4-Main shaft; 5-Moving cutter wheel; 6-Fixed cutter; 7-Interlayer screen; 8-Rotary joint; 9-Compressor; 10-Air heater; 11-Cleaning fluid pump. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 The cleaning device of this utility model is applied to a fiber shredder. In order to better understand the installation position and working environment of this utility model, the necessary structure of the fiber shredder is first described: The fiber shredder mainly includes a machine body 3. A main shaft 4 is rotatably arranged in the horizontal direction inside the machine body 3. One or more moving cutter wheels 5 are fixed on the main shaft 4 along its axial direction. An arc-shaped sandwich screen 7 is fixedly installed below the outer periphery of the moving cutter wheel 5.

[0021] During operation, the material enters from the feed port above the machine body 3 and is crushed by the shearing and impact action between the high-speed rotating moving blade wheel 5 and the fixed blade 6 inside the machine body. The material that meets the fineness requirements is discharged through the jacketed screen 7 below.

[0022] Based on the structure of the fiber shredder, this embodiment provides a cleaning device for the fiber screen, which integrates the fluid channel and spray function directly inside the main shaft 4.

[0023] Specifically, the main shaft 4 is designed as a hollow structure with two independent fluid channels machined inside. The first channel is a gas channel 1, which is used to alternately transport high-temperature airflow and normal-temperature airflow. The second channel is an atomized cleaning liquid channel 2, which is specifically used to transport atomized cleaning liquid.

[0024] The cleaning solution uses a surfactant solution. Surfactants can reduce the surface tension of water, making it easier to penetrate into the interior of the fiber material. At the same time, they can emulsify or disperse adhering non-water-soluble substances such as grease and wax, making them easier to be swept away by the airflow.

[0025] On the outer peripheral wall of the main shaft 4, multiple injection ports are provided radially, which are respectively connected to the two channels, so that the medium can be directly and uniformly sprayed from the inside of the rotating main shaft onto the moving cutter wheel 5 and the sandwich screen 7.

[0026] To solve the problem of stably conveying two media to the rotating spindle, this invention adopts a concentric inlet design on the input end face of the spindle 4.

[0027] Specifically, the inlet of the atomized cleaning fluid channel 2 is located at the center of the end face of the main shaft 4, while the inlet of the gas channel 1 is machined into an annular shape, concentrically surrounding the outer periphery of the inlet of the atomized cleaning fluid channel 2.

[0028] Correspondingly, the atomized cleaning fluid channel 2 and the gas channel 1 are equipped with a rotary joint 8 with a concentric dual-channel output structure. The output end of the rotary joint 8 can be connected to the input end of the main shaft 4. Its central output port is aligned with the inlet of the atomized cleaning fluid channel 2 of the main shaft, and its outer ring output port is aligned with the inlet of the gas channel 1 of the main shaft, thereby realizing the synchronous, leak-free and interference-free transmission of the two media.

[0029] The sealing structure between the rotary joint 8 and the atomized cleaning fluid channel 2 and the gas channel 1 is not shown in the figure.

[0030] The media supply system of this utility model includes: Gas supply assembly: includes a pipeline that supplies air at room temperature and high temperature. The pipeline is supplied with air by a compressor 9. An air heater 10 is installed online in the pipeline from the compressor 9 to the rotary joint 8. When the PLC controls the air heater 10 to be powered on, the air flow through the pipeline is the high temperature air flow; when the air heater 10 is turned off, the air flow is the room temperature air flow.

[0031] Cleaning fluid supply assembly: includes a cleaning fluid pump 11 and an atomizing nozzle (not shown) for preparing atomized cleaning fluid and delivering it to the atomized cleaning fluid channel 2 of the main shaft through the central channel of the rotary joint 8.

[0032] The entire cleaning process is fully automated by a single PLC controller. The PLC precisely executes the cleaning procedure by controlling the solenoid valves installed on each pipeline and the power switch of the air heater 10.

[0033] A typical workflow is as follows: The first step, high-temperature pre-drying: The PLC starts the compressor 9 and connects the power supply to the air heater 10. The high-temperature airflow is sprayed out from the main shaft nozzle through the gas channel 1 to dry the adhering material.

[0034] The second step is atomization and softening: The PLC shuts off the air heater 10 and starts the cleaning fluid supply component. The atomized cleaning fluid is sprayed out from the spindle nozzle through the atomized cleaning fluid channel 2 to soften the dried residue.

[0035] The third step is airflow purging: The PLC shuts off the cleaning fluid supply component and keeps the compressor 9 running. At this time, room temperature airflow is sprayed out through the gas channel 1 to purge the softened residue.

[0036] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A cleaning device for a fiber screen of a fiber pulverizer, the fiber pulverizer comprising a body (3), a main shaft (4) rotatably disposed within the body (3) for mounting a movable cutter wheel (5), and a sandwich screen (7) disposed below the movable cutter wheel (5), characterized in that, The cleaning device includes: At least two independent fluid channels are provided inside the main shaft (4), and an injection port communicating with the fluid channels is provided on the outer peripheral wall of the main shaft (4); Rotary joint (8), the output end of which is connected to the fluid channel inlet of the input end of the main shaft (4), and its input end is connected to an external media supply system.

2. The cleaning device according to claim 1, characterized in that, The two independent fluid channels are a gas channel (1) for conveying gas and an atomized cleaning fluid channel (2) for conveying atomized cleaning fluid.

3. The cleaning device according to claim 2, characterized in that, On the input end face of the main shaft (4), the inlet of the atomized cleaning fluid channel (2) is located at the axial center of the main shaft (4), and the inlet of the gas channel (1) is annular and concentrically surrounds the inlet of the atomized cleaning fluid channel (2).

4. The cleaning device according to claim 3, characterized in that, The rotary joint (8) has a concentric dual-channel output structure that matches the input end face of the spindle (4).

5. The cleaning device according to claim 2, characterized in that, The medium supply system includes a gas supply assembly connected to the gas passage (1), the gas supply assembly including a compressor (9) and an air heater (10), the air heater (10) being installed on the pipeline from the compressor (9) to the rotary joint (8).

6. The cleaning device according to claim 5, characterized in that, By turning the air heater (10) on or off, high-temperature airflow or normal-temperature airflow can be selectively delivered into the gas channel (1).

7. The cleaning device according to claim 5, characterized in that, The media supply system includes a cleaning fluid supply assembly connected to the atomized cleaning fluid channel (2), the cleaning fluid supply assembly including a cleaning fluid pump (11) and an atomizing nozzle.

8. The cleaning device according to claim 1, characterized in that, The injection port is arranged radially along the main shaft (4) and is used to spray the medium from inside the main shaft (4) outward to the moving cutter wheel (5) and the sandwich screen (7).

9. The cleaning device according to claim 7, characterized in that, The cleaning device also includes a controller electrically connected to the media supply system for time-sharing control of the delivery of different media into the fluid channel.

10. The cleaning device according to claim 9, characterized in that, The media supply system includes multiple solenoid valves and switches controlled by the controller. The controller controls the start and stop of the compressor (9), air heater (10) and cleaning liquid pump (11) by controlling the solenoid valves and switches.

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