Screening machine
By designing a screening machine with partition plate and rotor, the existing screening machine has solved the problems of high maintenance costs and complex processes, and efficient slurry processing and refined screening are achieved.
Patent Information
- Application Number
- CN202420997489.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing screening machines have high maintenance costs, complex slurry processing technology and long cycles, making it difficult to effectively separate crude slag and light slag.
A housing including an axial horizontal arrangement is designed, with a partition inside the housing to divide it into two independent cavity, the bearing seat of the transmission shaft is arranged outside the housing, sealing is achieved using sealing filler, rotor and jet pipe are arranged, and sludge agitating and centrifugal separation of the slurry is used to agitate and centrifuge the slurry.
It reduces maintenance costs, simplifies the process flow, improves the purity and production efficiency of the slurry, shortens the slurry pretreatment cycle, reduces the slurry standstill time of coarse slag and light slag, and realizes one-time fine screening.
Smart Images
Figure CN222631948U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of papermaking and pulping equipment, in particular to a screening machine. Background Art
[0002] At present, in order to meet the requirements of their own processing technology, industries such as pulping and papermaking, wood-based panel manufacturing, etc. usually need to use screening machinery to process the purchased waste paper, wood chips, bamboo chips and other raw materials into pulp, and then use suitable pulp for production. Separator is one of the most commonly used screening equipment in the pulping and papermaking industry. Now most of the pulping in paper mills is completed through the coarse screening process and the fine screening process. The commonly used equipment is the vertical separator. The two ends of the rotor shaft are installed at the upper and lower ends of the shell through the bearing seat. Since the bearing seat is located in the shell, especially the lower bearing seat, it needs to be pressure-bearing and sealed. The bearing seat also needs lubrication and cooling in the shell, which is difficult to maintain. In addition, many pipelines are set from top to bottom in the shell. Once the lower parts need to be maintained, all the upper pipelines need to be removed before the shell can be disassembled, which is time-consuming and labor-intensive, and the maintenance cost is high. In addition, the existing slurry contains many impurities, and it often needs to stand for a long time for the heavy impurities to settle before it is pumped into the separator for screening. After the separation is completed, the slurry 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 light specific gravity such as plastics, foam, etc. After screening, the coarse slag and light slag are discharged at the same time. The existing method for separating coarse slag from light slag usually requires standing for a long time for the coarse slag to settle, and then using a mesh screen to screen out the light slag floating on the surface, which leads to a long slurry processing cycle, seriously affecting the production efficiency of the slurry, and the slurry quality is not high after the initial screening, and it will contain impurities. To obtain good slurry, it needs to be screened again, and the above process must be repeated, and the process is complicated.
[0003] Therefore, in the technical field of papermaking and pulping equipment, there is still a need for research and improvement of screening machines, 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 the present utility model. Utility Model Content
[0004] Therefore, the technical problem to be solved by the utility model is to provide a screening machine to solve the technical problems of high maintenance cost of the screening machine, complex pulp processing process and long cycle.
[0005] In order to solve the above technical problems, the technical solution of the utility model is: a screening machine, comprising a shell arranged axially horizontally, a partition is arranged in the shell, the partition divides the shell into a first cavity and a second cavity that are not connected to each other, a transmission shaft driven by a power device is rotatably installed in the shell, the transmission shaft is coaxially arranged with the shell, both ends of the transmission shaft pass through the shell and bearing seats are installed at the ends, a sealing filler is arranged between the transmission shaft and the shell, a columnar rotor body is arranged on the transmission shaft, the rotor body passes through the partition, a first screen drum is installed at a position corresponding to the rotor body in the first cavity of the shell, and a second screen drum is installed at a position corresponding to the rotor body in the second cavity of the shell, at least one set of rotors are arranged on the rotor bodies in the first cavity and the second cavity, the rotors include a plurality of wing seats protruding from the rotor body, and two adjacent wing seats are staggered in the axial direction of the rotor body, a first screening channel is arranged between the rotor body and the first screen drum, a second screening channel is arranged between the rotor body and the second screen drum, and a first water inlet connected to the first cavity is provided on the shell corresponding to the rotor and a first slurry outlet, a second water inlet and a second slurry outlet communicating with the second cavity are provided on the shell corresponding to the rotor, a first slurry inlet communicating with the first cavity is provided on the shell, a second slurry inlet communicating with the second cavity is provided on the shell, the second slurry inlet is close to the partition, the first slurry outlet is connected to the second slurry inlet through a pipeline, a plurality of first accelerating material-leveling sheets are fixedly provided on the end surface of the rotor body located in the first cavity, a heavy impurity collecting port is provided on the shell corresponding to the position of the first accelerating material-leveling sheet, a plurality of second accelerating material-leveling sheets are fixedly provided on the surface of the rotor body located in the second cavity, the second accelerating material-leveling sheets are close to the partition, a plurality of first slag-removing blades are fixedly provided on the surface of the rotor body located in the first cavity, the first slag-removing blades are close to the partition, a tailing slag collecting port is provided on the shell corresponding to the first slag-removing blade, a plurality of second slag-removing blades are fixedly provided on the end surface of the rotor body located in the second cavity, a coarse slag collecting port is provided on the shell corresponding to the position of the second slag-removing blade, and a light slag collecting port is provided on the shell at a position relative to the rotation center of the second slag-removing blade.
[0006] As an improvement, the outer circumferential surface of the rotor body in the first cavity and the second cavity is provided with several groups of rotors, and the corresponding first water inlet and second water inlet are respectively located at the upstream position of the wing seat in the group of rotors close to the first slurry inlet, and the corresponding first slurry outlet and second slurry outlet are respectively located at the relative position of the wing seat in the group of rotors away from the first slurry inlet.
[0007] As a further improvement, the shell is provided with a first jet water pipe connected to the first cavity, and the shell is provided with a second jet water pipe connected to the second cavity, and the jet directions of the first jet water pipe and the second jet water pipe are both along the tangent direction of the shell.
[0008] As a further improvement, the end of the first accelerating material-leveling piece extends out of the outer circumference of the rotor body and extends to the first screen drum position, the cross-sectional shape of the first accelerating material-leveling piece is rectangular, and the extension direction of the first accelerating material-leveling piece is provided with an angle with the radial direction of the end face of the rotor body, and an inclination angle is provided between the slurry-facing surface of the first accelerating material-leveling piece and the end face of the rotor body.
[0009] As a further improvement, the first slag removal blade has a rectangular cross-section and extends parallel to the axial direction of the rotor body.
[0010] As a further improvement, the pulp facing surface of the second accelerating material leveling sheet is inclined toward the second screening channel.
[0011] As a further improvement, the end of the second slag removal blade extends out of the outer circumference of the rotor body and extends to the second screen drum position, the cross-sectional shape of the second slag removal blade is rectangular, and the second slag removal blade extends radially along the end surface of the rotor body and has an arc shape.
[0012] As another improvement, the shell includes an upper body and a lower body, and the upper body and the lower body are connected by fasteners, and the first slurry inlet, the second slurry inlet, the heavy impurity collection port, the tailings collection port, the coarse slag collection port, the light slag collection port, the first water inlet, the second water inlet, the first slurry outlet and the second slurry outlet are all arranged on the lower body.
[0013] As another improvement, the shell includes a left half, a right half and several intermediate bodies arranged along the axial direction, the intermediate body is located between the left half and the right half, the left half, the intermediate and the right half are connected in sequence by fasteners, the first slurry inlet and the heavy impurity collection port are arranged on the right half, the coarse slag collection port and the light slag collection port are arranged on the left half, the second slurry inlet, the tailings collection port and each group of the first water inlet, the first slurry outlet and the second water inlet, the second slurry outlet are all correspondingly arranged on the corresponding intermediate body.
[0014] After adopting the above technical solution, the beneficial effects of the utility model are:
[0015] The two ends of the transmission shaft of the utility model embodiment pass through the housing and the ends are equipped with bearing seats. The bearing seats are arranged outside the housing, which solves the technical problem that the bearings of the vertical equipment are located in the housing, which makes maintenance difficult and expensive. It is easy to lubricate and cool, reduces the number of bearing maintenance times, and prolongs the service life of the bearings. A sealing filler is installed between the transmission shaft and the housing. Compared with the traditional vertical equipment, only the sealing filler is required to achieve the sealing between the housing and the transmission shaft, and there is no need to meet the stringent sealing requirements of the bearing chamber, which reduces the equipment manufacturing requirements and thus reduces the equipment manufacturing and maintenance costs. Since screening is achieved in the first cavity and the second cavity respectively, and the slurry screened in the first cavity directly enters the second cavity through the first slurry outlet for further screening, the process flow is simplified, the overall equipment occupies a small area, and is driven by the same power device, which reduces energy consumption. In particular, after two screenings, a higher purity good slurry can be obtained, which greatly improves the slurry discharge effect. In addition, since the first accelerating material-leveling sheet and the second accelerating material-leveling sheet are provided, on the one hand, as the rotor body The rotation stirs the slurry, which speeds up the slurry flow rate and improves the screening efficiency. On the other hand, the first accelerating material leveling sheet stirs the slurry, causing the slurry to generate a vortex. Heavy impurities are separated at the periphery close to the shell under the action of centrifugal force and can be collected into the heavy impurity storage tank through the heavy impurity collection port for storage, reducing the number of heavy impurities entering the screening area without the need for static separation of heavy impurities, greatly shortening the slurry pretreatment cycle and improving the pulping efficiency. In addition, since the first slag rejection blade and the second slag rejection blade are provided, a portion of tailings can be removed in the first cavity under the action of the first slag rejection blade. In the second cavity, the second slag rejection blade stirs the slurry as the rotor body rotates, causing the slurry to generate a vortex. Coarse slag is separated at the periphery close to the shell under the action of centrifugal force and is collected into the coarse slag storage tank through the coarse slag collection port for storage, while light slag is at the center of the vortex and is discharged and collected from the light slag collection port close to the drive shaft as the vortex occurs. The utility model does not need to be statically separated from coarse slag and light slag, greatly shortening the post-processing cycle of the slag-containing slurry and improving the pulping efficiency.
[0016] Since the first jet water pipe and the second jet water pipe are provided on the shell, on the one hand, jet water is provided to dilute the slurry, reduce the concentration of the slurry and improve the fluidity of the slurry. On the other hand, the jet water is injected tangentially, so that the slurry generates eddy flow and the flow rate is increased, which further improves the separation effect of heavy impurities.
[0017] Since the shell includes an upper half and a lower half, and the pipeline connections are all arranged in the lower half, during maintenance, the upper half can be easily opened to clean or replace the screen drum or wing seat, which reduces the labor intensity of the operator, saves maintenance time, and reduces maintenance costs.
[0018] Since the shell includes a left half body, a right half body and a plurality of intermediate bodies arranged along the axial direction, during maintenance, only the part that needs to be maintained is removed, and other parts do not need to be disassembled, which reduces the labor intensity of the operator, saves maintenance time and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] 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.
[0020] 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.
[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;
[0022] Figure 2 It is a schematic diagram of the arrangement of the first accelerating material leveling piece in the first embodiment of the utility model;
[0023] Figure 3 It is a schematic structural diagram of the first accelerating material leveling piece in the first embodiment of the utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the second slag removal blade in the first embodiment of the utility model;
[0025] Figure 5 It is a structural schematic diagram of the second embodiment of the utility model;
[0026] Figure 6 It is a structural schematic diagram of the third embodiment of the utility model;
[0027] In the figure: 1, shell, 101, first slurry inlet, 102, heavy impurity collection port, 103, first water inlet, 104, first slurry outlet, 105, second slurry inlet, 106, second water inlet, 107, second slurry outlet, 108, coarse slag collection port, 109, light slag collection port, 110, tailings collection port, 111, lower body, 112, upper body, 113, right half, 114, left half, 115, intermediate body, 2, first screen drum, 3, second screen drum, 4, transmission shaft, 5, rotor body, 6, partition, 7, wing seat, 8, bearing seat, 9, sealing packing, 10, first accelerating material leveling sheet, 11, first slag rejection blade, 12, second accelerating material leveling sheet, 13, second slag rejection blade, 14, first jet water pipe, 15, second jet water pipe. DETAILED DESCRIPTION
[0028] 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.
[0029] 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.
[0030] Embodiment 1:
[0031] like Figure 1As shown, the utility model provides a screening machine, including a shell 1 arranged axially and horizontally, a partition 6 is arranged in the shell 1, the partition 6 divides the shell 1 into a first cavity and a second cavity which are not connected to each other, forming two independent screening spaces, a transmission shaft 4 driven by a power device is rotatably installed in the shell 1, the transmission shaft 4 is coaxially arranged with the shell 1, the power device is usually a belt transmission device driven by a motor, the device is a common technology in the field, and no further description is given here, both ends of the transmission shaft 4 pass through the shell 1 and the ends are installed with bearing seats 8, the bearing seats 8 are arranged outside the shell 1, and the technical problem that the bearing of the vertical equipment is located in the shell 1, which leads to great difficulty and high maintenance cost, is solved, lubrication and cooling are convenient, the number of bearing maintenance is reduced, and the service life of the bearing is extended. A sealing packing 9 is provided between the transmission shaft 4 and the housing 1. Compared with the traditional vertical equipment, only the sealing packing 9 is required to achieve the sealing between the housing 1 and the transmission shaft 4, without meeting the stringent sealing requirements of the bearing chamber, thereby reducing the equipment manufacturing requirements, and further reducing the equipment manufacturing and maintenance costs. A columnar rotor body 5 is provided on the transmission shaft 4, and the rotor body 5 passes through the partition 6. A sliding seal is required between the partition 6 and the rotor body 5. A first screen drum 2 is installed on the housing 1 at a position corresponding to the rotor body 5 in the first cavity, and a second screen drum 3 is installed on the housing 1 at a position corresponding to the rotor body 5 in the second cavity. The first screen drum 2 and the second screen drum 3 can use a hole screen or a slot screen according to different slurries, which is not limited here. The rotor bodies 5 in the first cavity and the second cavity are both provided with At least one set of rotors, the rotors include a plurality of wing seats 7 protruding from the rotor body 5, the wing seats 7 are detachably mounted on the rotor body 5 by fasteners, and two adjacent wing seats 7 are staggered in the axial direction of the rotor body 5, thereby avoiding long residence time of impurities and unsmooth slag discharge, solving the problem of severe wear of the wing seats 7 caused by impurities blocking the screen of the screen drum, and reducing maintenance costs. A first screening channel is provided between the rotor body 5 and the first screen drum 2, and a second screening channel is provided between the rotor body 5 and the second screen drum 3. The corresponding rotors on the housing 1 are provided with a first water inlet 103 and a first slurry outlet 104 connected to the first cavity, and the corresponding rotors on the housing 1 are provided with a second water inlet 106 and a second slurry outlet 107 connected to the second cavity. The first water inlet 103 and the second water inlet 106 are connected to the second cavity. The setting realizes the dilution of the slurry screened at each stage, improves the speed of the tailings advancing, and solves the problem of the tailings staying in the screening area. The shell 1 is provided with a first slurry inlet 101 connected to the first cavity, and the shell 1 is provided with a second slurry inlet 105 connected to the second cavity. The second slurry inlet 105 is close to the partition 6. The slurry entry directions of the first slurry inlet and the second slurry inlet are both along the tangent direction of the shell 1, which is convenient for the slurry to form a vortex. The first slurry outlet 104 is connected to the second slurry inlet 105 through a pipeline, and screening is achieved in the first cavity and the second cavity respectively, and the slurry screened in the first cavity directly enters the second cavity through the first slurry outlet 104 for continued screening, which simplifies the process flow, the overall equipment occupies a small area, and is driven by the same power device.The energy consumption is reduced, especially after two screenings, a higher purity pulp can be obtained, which greatly improves the pulping effect. The end face of the rotor body 5 located in the first cavity is fixedly provided with a plurality of first accelerating material leveling pieces 10, and a heavy impurity collection port 102 is provided on the shell 1 corresponding to the position of the first accelerating material leveling piece 10. The surface of the rotor body 5 located in the second cavity is fixedly provided with a plurality of second accelerating material leveling pieces 12, and the second accelerating material leveling pieces 12 are close to the partition 6. The surface of the rotor body 5 located in the first cavity is fixedly provided with a plurality of first slag removal blades 11, and the first slag removal blades 11 are close to the partition 6. A tailings collection port 110 is provided on the shell 1 corresponding to the first slag removal blades 11. Because the first slag removal blades 11 are provided, the tailings in the slurry are centrifugally separated to a position away from the rotor body 5, so the sliding seal between the rotor body 5 and the partition 6 does not need to be too high, which reduces the equipment manufacturing requirements. The rotor body 5 located in the second cavity A plurality of second slag-removing blades 13 are fixedly arranged on the end surface, a coarse slag collecting port 108 is arranged on the shell 1 at a position corresponding to the second slag-removing blade 13, and a light slag collecting port 109 is arranged on the shell 1 at a position relative to the rotation center of the second slag-removing blade 13. The second slag-removing blade 13 stirs the slurry as the rotor body 5 rotates, causing the slurry to generate a vortex, and the coarse slag is separated under the action of centrifugal force, and can be collected into the coarse slag storage tank through the coarse slag collecting port 108 for storage, while the light slag is at the center of the vortex, and is discharged and collected from the light slag collecting port 109 close to the transmission shaft 4 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, improves the pulping efficiency, and completes the fine screening of the slurry at one time, replacing the cumbersome and complicated coarse screening system and fine screening system required by the traditional process.
[0032] The outer circumference of the rotor body 5 in the first cavity and the second cavity is provided with a plurality of rotor blades, the corresponding first water inlet 103 and the second water inlet 106 are respectively located at the upstream position of the wing seat 7 close to the first slurry inlet 101 in the rotor blades, and the corresponding first slurry outlet 104 and the second slurry outlet 107 are respectively located at the relative position of the wing seat 7 far away from the first slurry inlet 101 in the rotor blades. The plurality of rotor blades are provided, that is, the slurry separation stages are more, the slurry particle size is smaller as it goes downstream, and the discharged slurry is finer.
[0033] A first jet water pipe 14 connected to the first cavity is provided on the shell 1, and a second jet water pipe 15 connected to the second cavity is provided on the shell 1. The jet directions of the first jet water pipe 14 and the second jet water pipe 15 are both along the tangent direction of the shell 1. On the one hand, the first jet water pipe 14 and the second jet water pipe 15 provide jet water to dilute the slurry, reduce the concentration of the slurry, and improve the fluidity of the slurry. On the other hand, the jet water is injected along the tangential direction, so that the slurry generates eddy flow and the flow rate is increased, which further improves the separation effect of heavy impurities.
[0034] like Figure 2 and Figure 3 As shown, a plurality of first accelerating material leveling pieces 10 are arranged in a circular array on the end face of the rotor body 5, and the end of the first accelerating material leveling piece 10 extends out of the outer periphery of the rotor body 5 and extends to the position of the first screen drum 2. The cross-sectional shape of the first accelerating material leveling piece 10 is rectangular, and the extension direction of the first accelerating material leveling piece 10 is provided with an angle with the radial direction of the end face of the rotor body 5, that is, the first accelerating material leveling piece 10 is arranged along the chord length direction, and the line connecting the head end of the first accelerating material leveling piece 10 and the center of the end face of the rotor body 5 and the line connecting the tail end of the first accelerating material leveling piece 10 and the center of the end face of the rotor body 5 are acute angles. An inclination angle is provided between the slurry facing surface of the first accelerating material leveling piece 10 and the end face of the rotor body 5, and the inclination angle is usually 75±5 degrees. The slurry facing surface of the first accelerating material leveling piece 10 is inclined toward the first screening channel, which further improves the acceleration and stirring effect of the first accelerating material leveling piece 10 and promotes the slurry to enter the screening area.
[0035] The first slag-removing blade 11 has a rectangular cross section and extends parallel to the axial direction of the rotor body 5 , so as to generate centrifugal force as large as possible to separate the tailings in the slurry to a position close to the shell 1 .
[0036] The slurry-facing surface of the second accelerating and leveling sheet 12 is inclined toward the second screening channel, so that the slurry entering the second cavity can enter the second screening channel in time.
[0037] like Figure 4 As shown, a plurality of second slag removal blades 13 are arranged in a circular array on the end face of the rotor body 5, and the ends of the second slag removal blades 13 extend out of the outer periphery of the rotor body 5 and extend to the position of the second screen drum 3. The number of second slag removal blades 13 can be set to different numbers according to the different end face diameters of the rotor body 5. Those skilled in the art can set them by themselves and will not be repeated here. The cross-sectional shape of the second slag removal blades 13 is rectangular, and the second slag removal blades 13 extend radially along the end face of the rotor body 5 and are arc-shaped. The arc-shaped second slag removal blades 13 have a larger slurry facing surface than the linear structure at the same turning radius, and are more likely to generate eddies when rotating, thereby improving the separation effect of light slag and coarse slag.
[0038] When in use, the slurry enters the first cavity from the first slurry inlet 101, and the first jet water pipe 14 injects dilution water to reduce the slurry concentration and improve the slurry fluidity. At this time, the rotor body 5 drives the first acceleration leveling sheet 10 to cause the slurry to generate vortex, and the heavy impurities are separated at the periphery close to the shell 1 under the action of centrifugal force, and are collected in the heavy impurity storage tank through the heavy impurity collection port 102 for storage. The slurry enters the screening area through the first screening channel under the action of pressure, and the slurry is screened between the wing seat 7 and the first screen drum 2. The tailings are discharged and collected from the tailings collection port 110, and the screened slurry is discharged step by step from the first slurry outlet 104. The first slurry outlet 104 The discharged material is coarse pulp with a particle size between 0.8 mm and 1.2 mm. The coarse pulp discharged from the first pulp outlet 104 enters the second pulp inlet 105 and continues to be screened in the second cavity. The second pulp outlet 107 can discharge refined pulp with a particle size between 0.08 and 0.12. Then, the slag-containing slurry continues to be discharged downstream, and the rotor body 5 drives the second slag-removing blade 13 to cause the slag-containing slurry to generate a vortex. The coarse slag is separated at the periphery close to the shell 1 under the action of centrifugal force, and is collected in the coarse slag storage tank through the coarse slag collecting port 108 for storage. The light slag is at the center of the vortex and is discharged and collected from the light slag collecting port 109 close to the drive shaft 4 along with the vortex.
[0039] Embodiment 2:
[0040] The utility model provides a screening machine, the structure of which is basically the same as that of the first embodiment, except that: Figure 5 As shown, the shell 1 includes an upper body 112 and a lower body 111, and the upper body 112 and the lower body 111 are connected by fasteners. The upper body 112 can be provided with an exhaust port and is not connected to other pipelines. The first slurry inlet 101, the second slurry inlet 105, the heavy impurity collection port 102, the tailings collection port 110, the coarse slag collection port 108, the light slag collection port 109, the first water inlet 103, the second water inlet 106, the first slurry outlet 104 and the second slurry outlet 107 are all arranged on the lower body 111, and the first jet water pipe 14, the second jet water pipe 15 and other pipeline connections are all arranged on the lower body 111. During maintenance, the upper body 112 can be easily opened to clean or replace the first screen drum 2, the second screen drum 3 or the wing seat 7, which reduces the labor intensity of the operator, saves maintenance time and reduces maintenance costs.
[0041] Embodiment three:
[0042] The utility model provides a screening machine, the structure of which is basically the same as that of the first embodiment, except that: Figure 6As shown, the shell 1 includes a left half body 114, a right half body 113 and a plurality of intermediate bodies 115 arranged along the axial direction, the intermediate body 115 is located between the left half body 114 and the right half body 113, the left half body 114, the intermediate body 115 and the right half body 113 are connected in sequence by fasteners, the first slurry inlet 101, the first jet water pipe 14 and the heavy impurity collecting port 102 are arranged on the right half body 113, the coarse slag collecting port 108 and the light slag collecting port 109 are arranged on the left half body 114, the second slurry inlet 105, the second jet water pipe 15, the tailings collecting port 110 and each group of the first water inlet 103, the first slurry outlet 104 and the second water inlet 106, the second slurry outlet 107 are correspondingly arranged on the corresponding intermediate body 115. When this structure is maintained, the part that needs to be maintained is removed, and the other parts do not need to be disassembled, which reduces the labor intensity of the operator, saves maintenance time, and reduces maintenance costs.
[0043] 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 screening machine, comprising a housing arranged axially and horizontally, wherein a partition is arranged in the housing, and the partition divides the housing into a first cavity and a second cavity which are not connected to each other, characterized in that: A transmission shaft driven by a power device is rotatably installed in the shell, the transmission shaft is coaxially arranged with the shell, both ends of the transmission shaft pass through the shell and bearing seats are installed at the ends, a sealing filler is arranged between the transmission shaft and the shell, a columnar rotor body is arranged on the transmission shaft, the rotor body passes through the partition, a first screen drum is installed on the shell in the first cavity at a position corresponding to the rotor body, and a second screen drum is installed on the shell in the second cavity at a position corresponding to the rotor body, at least one group of rotors are arranged on the rotor bodies in the first cavity and the second cavity, the rotors include a plurality of wing seats protruding from the rotor body, and two adjacent wing seats are staggered in the axial direction of the rotor body, a first screening channel is provided between the rotor body and the first screen drum, and a second screening channel is provided between the rotor body and the second screen drum, a first water inlet and a first slurry outlet are provided on the shell corresponding to the rotors, and a second water inlet and a second slurry outlet are provided on the shell corresponding to the rotors. A slurry port, a first slurry inlet connected to the first cavity is provided on the shell, a second slurry inlet connected to the second cavity is provided on the shell, the second slurry inlet is close to the partition, the first slurry outlet is connected to the second slurry inlet through a pipeline, a plurality of first accelerating material-leveling sheets are fixedly provided on the end surface of the rotor body located in the first cavity, a heavy impurity collecting port is provided on the shell corresponding to the position of the first accelerating material-leveling sheet, a plurality of second accelerating material-leveling sheets are fixedly provided on the surface of the rotor body located in the second cavity, the second accelerating material-leveling sheets are close to the partition, a plurality of first slag rejection blades are fixedly provided on the surface of the rotor body located in the first cavity, the first slag rejection blade is close to the partition, a tailings collection port is provided on the shell corresponding to the first slag rejection blade, a plurality of second slag rejection blades are fixedly provided on the end surface of the rotor body located in the second cavity, a coarse slag collection port is provided on the shell corresponding to the position of the second slag rejection blade, and a light slag collection port is provided on the shell at a position relative to the rotation center of the second slag rejection blade.
2. The screening machine according to claim 1, characterized in that: The outer circumferential surface of the rotor body in the first cavity and the second cavity is provided with several groups of rotor blades, and the corresponding first water inlet and the second water inlet are respectively located at the upstream position of the wing seat in the group of rotor blades close to the first slurry inlet, and the corresponding first slurry outlet and the second slurry outlet are respectively located at the relative position of the wing seat in the group of rotor blades away from the first slurry inlet.
3. The screening machine according to claim 1, characterized in that: The shell is provided with a first jet water pipe connected to the first cavity, and the shell is provided with a second jet water pipe connected to the second cavity. The jet directions of the first jet water pipe and the second jet water pipe are both along the tangent direction of the shell.
4. The screening machine according to claim 1, characterized in that: The end of the first accelerating material-leveling piece extends out of the outer circumference of the rotor body and extends to the first screen drum position. The cross-sectional shape of the first accelerating material-leveling piece is rectangular, and an angle is set between the extension direction of the first accelerating material-leveling piece and the radial direction of the end face of the rotor body. An inclination angle is set between the pulp-facing surface of the first accelerating material-leveling piece and the end face of the rotor body.
5. The screening machine according to claim 1, characterized in that: The first slag removal blade has a rectangular cross section and extends parallel to the axial direction of the rotor body.
6. The screening machine according to claim 1, characterized in that: The pulp facing surface of the second accelerating material leveling piece is inclined toward the second screening channel.
7. The screening machine according to claim 1, characterized in that: The end of the second slag removal blade extends out of the outer circumference of the rotor body and extends to the second screen drum position. The cross-sectional shape of the second slag removal blade is rectangular. The second slag removal blade extends radially along the end surface of the rotor body and has an arc shape.
8. The screening machine according to any one of claims 1 to 7, characterized in that: The shell includes an upper body and a lower body, and the upper body and the lower body are connected by fasteners. The first slurry inlet, the second slurry inlet, the heavy impurity collection port, the tailings collection port, the coarse slag collection port, the light slag collection port, the first water inlet, the second water inlet, the first slurry outlet and the second slurry outlet are all arranged on the lower body.
9. The screening machine according to any one of claims 1 to 7, characterized in that: The shell includes a left half, a right half and several intermediate bodies arranged along the axial direction, the intermediate body is located between the left half and the right half, the left half, the intermediate and the right half are connected in sequence by fasteners, the first slurry inlet and the heavy impurity collection port are arranged on the right half, the coarse slag collection port and the light slag collection port are arranged on the left half, the second slurry inlet, the tailings collection port and each group of the first water inlet, the first slurry outlet and the second water inlet, the second slurry outlet are correspondingly arranged on the corresponding intermediate body.