Screening machine tail slag treatment device

Abstract

The utility model discloses a screening machine tail slag treatment device, which belongs to the technical field of papermaking pulping equipment, and comprises a shell, the shell comprises a slag discharge area and a screening area, a screen cylinder is fixedly mounted in the shell, a rotor is coaxially mounted in the shell, a transmission shaft of the rotor penetrates through the slag discharge area and the screening area, and the transmission shaft is coaxially mounted in the screening area. A plurality of slag throwing blades are fixedly arranged on the end face of the rotor wing rotor, the ends of the slag throwing blades extend out of the periphery of the rotor wing rotor and extend to the position of the screen cylinder, and a screening channel communicated with the slag discharging area is arranged between the rotor wing rotor and the screen cylinder. A coarse slag collecting opening is formed in the position, corresponding to the slag throwing blade, of the shell, and a light slag collecting opening is formed in the position, close to the transmission shaft, of the shell. The utility model solves the technical problems of long post-treatment period and low pulp production efficiency of the screened slag-containing pulp, and is widely applied to papermaking pulping.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking and pulping equipment, and in particular relates to a screening machine tailings processing device. Background Art

[0002] At present, in order to meet the requirements of their own processing technology, industries such as pulp and paper making and wood-based panel manufacturing usually need to use screening machinery to process the purchased waste paper, wood chips, bamboo chips and other raw materials into pulp, and then screen them, and then use suitable pulp for production. However, the pulp after screening still contains coarse slag and light slag. Common coarse slag includes impurities with high specific gravity such as sand, soil, stones, nails, buttons, brick slag, etc., and common light slag includes impurities with low specific gravity such as plastics and foam. After screening, coarse slag and light slag are discharged at the same time. The existing method of separating coarse slag from light slag usually requires standing for a long time, and then using a mesh screen to screen out the light slag floating on the surface after the coarse slag is precipitated. This leads to a long post-processing cycle of the slag-containing pulp after screening, which seriously affects the production efficiency of the pulp.

[0003] Therefore, in the technical field of papermaking and pulping equipment, there is still a need for research and improvement on the screening machine tailings processing device, which is also a research hotspot and focus in the current technical field of papermaking and pulping equipment, and is also the starting point for the completion of this utility model. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to provide a screening machine tailings processing device to solve the technical problems of long post-processing cycle of slag-containing slurry after screening and low slurry production efficiency.

[0005] To solve the above technical problems, the technical solution of the utility model is: a tailings processing device for a screening machine, comprising a shell, the shell comprising a slag discharge area and a screening area, a screen drum is fixedly installed at the screening area position in the shell, a rotor is coaxially installed in the shell, the transmission shaft of the rotor passes through the slag discharge area and the screening area, a plurality of slag rejection blades are fixedly arranged on the end face of the rotor, the ends of the slag rejection blades extend out of the outer periphery of the rotor rotor and extend to the screen drum position, a screening channel connecting the slag discharge area is provided between the rotor rotor and the screen drum, a coarse slag collecting port is provided on the shell corresponding to the position of the slag rejection blade, the slag discharge direction of the coarse slag collecting port is radially arranged along the rotation direction of the slag rejection blade, a light slag collecting port is provided on the shell near the transmission shaft position, the slag discharge direction of the light slag collection port is axially arranged along the rotation direction of the slag rejection blade.

[0006] As an improvement, a plurality of slag removal blades are arranged in an annular array on the end surface of the rotary wing rotor.

[0007] As a further improvement, the cross-sectional shape of the slag-removing blade is rectangular, and the slag-removing blade extends radially along the end surface of the rotor and has an arc shape.

[0008] After adopting the above technical solution, the beneficial effects of the utility model are:

[0009] The embodiment of the utility model is provided with a slag rejection blade at the end of the rotary wing rotor. As the rotary wing rotor rotates, the slag-containing slurry in the slag discharge area is stirred, so that the slurry generates a vortex. The coarse slag is separated at the periphery close to the shell under the action of centrifugal force, and is collected into a coarse slag storage tank through a coarse slag collecting port for storage. The light slag is at the center of the vortex, and is discharged and collected from a light slag collecting port close to the transmission shaft along with the vortex. The utility model does not need to stand still to separate the coarse slag and the light slag, which greatly shortens the later processing cycle of the slag-containing slurry and improves the pulping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0011] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the slag-removing blade in the embodiment of the utility model;

[0014] In the figure: 1. shell, 101. slag discharge area, 102. screening area, 2. screen drum, 3. rotor, 4. slag removal blades, 5. light slag collection port, 6. coarse slag collection port. DETAILED DESCRIPTION

[0015] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The terms such as "front", "back", "left", "right", "inside", "outside", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of application of the present invention. Changes or adjustments to their relative relationships shall be regarded as within the scope of application of the present invention without substantially changing the technical content.

[0017] like Figure 1 As shown, the utility model provides a screening machine tailings processing device, including a shell 1, the shell 1 includes a slag discharge area 101 and a screening area 102, a screen drum 2 is fixedly installed at the screening area 102 in the shell 1, a rotor 3 is coaxially installed in the shell 1, and the transmission shaft of the rotor 3 passes through the slag discharge area 101 and the screening area 102, as shown in FIG. Figure 2 As shown, a plurality of slag-removing blades 4 are fixedly provided on the end surface of the rotor 3, and the plurality of slag-removing blades 4 are arranged in a ring array on the end surface of the rotor 3. The ends of the slag-removing blades 4 extend out of the outer periphery of the rotor 3 and extend to the position of the screen drum 2. A screening channel connected to the slag discharge area 101 is provided between the rotor 3 and the screen drum 2. The slag-containing slurry enters the slag discharge area 101 from the screening area 102. As the rotor 3 rotates, the slag-removing blades 4 extend out of the part of the rotor 3 that cuts the screening channel. A coarse slag collecting port 6 is provided on the housing 1 at the position corresponding to the slag-removing blade 4. The slag discharge direction of the coarse slag collecting port 6 is along the rotation direction of the slag-removing blade 4. The radial arrangement is provided, and a light slag collecting port 5 is provided on the shell body 1 near the transmission shaft. The slag discharge direction of the light slag collecting port 5 is arranged axially along the rotation direction of the slag rejection blade. The slag rejection blade 4 stirs the slag-containing slurry in the slag discharge area 101 as the rotor rotor 3 rotates, so that the slurry generates a vortex, and the coarse slag is separated under the action of centrifugal force, and can be collected into a coarse slag storage tank through the coarse slag collecting port 6 for storage, while the light slag is at the center of the vortex, and is discharged and collected from the light slag collecting port 5 near the transmission shaft along with the vortex. The utility model does not need to be statically separated from the coarse slag and the light slag, which greatly shortens the later processing cycle of the slag-containing slurry and improves the pulping efficiency.

[0018] A plurality of slag removal blades 4 are arranged in a circular array on the end face of the rotor 3. The number of slag removal blades 4 can be set to different numbers according to the different end face diameters of the rotor 3. The technicians in this field can set it by themselves and will not go into details here. The cross-sectional shape of the slag removal blades 4 is rectangular. The slag removal blades 4 extend radially along the rotor 3 and are arc-shaped. Because the slag-containing slurry has poor fluidity, the arc-shaped slag removal blades 4 have a longer slurry-facing surface compared to the straight structure, and are more likely to generate vortices when rotating.

[0019] In the embodiment of the utility model, the slag-containing slurry enters the slag discharge area 101 from the screening area 102. At this time, the rotor 3 drives the slag removal blades 4 to generate a vortex in the slag-containing slurry. The coarse slag is separated at the periphery close to the shell 1 under the action of centrifugal force, and is collected into the coarse slag storage tank through the coarse slag collecting port 6 for storage. The light slag is at the center of the vortex and is discharged and collected from the light slag collecting port 5 close to the transmission shaft along with the vortex. The utility model does not need to stand still to separate the coarse slag and the light slag, which greatly shortens the later processing cycle of the slag-containing slurry and improves the pulping efficiency.

[0020] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A tailings treatment device for a screening machine, comprising a housing, the housing comprising a slag discharge area and a screening area, a screen drum being fixedly installed in the screening area in the housing, a rotor being coaxially installed in the housing, a transmission shaft of the rotor passing through the slag discharge area and the screening area, characterized in that: A plurality of slag rejection blades are fixedly arranged on the end surface of the rotary wing rotor, and the ends of the slag rejection blades extend out of the outer periphery of the rotary wing rotor and extend to the screen drum position. A screening channel connected to the slag discharge area is provided between the rotary wing rotor and the screen drum. A coarse slag collecting port is provided on the shell corresponding to the position of the slag rejection blade, and the slag discharge direction of the coarse slag collecting port is arranged radially along the rotation direction of the slag rejection blade. A light slag collecting port is provided on the shell near the transmission shaft position, and the slag discharge direction of the light slag collection port is arranged axially along the rotation direction of the slag rejection blade.

2. The screening machine tailings processing device according to claim 1, characterized in that: A plurality of slag removal blades are arranged in an annular array on the end surface of the rotary wing rotor.

3. The screening machine tailings processing device according to claim 1 or 2, characterized in that: The cross-sectional shape of the slag-removing blade is rectangular, and the slag-removing blade extends radially along the end surface of the rotor and has an arc shape.

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