Screening machine for removing wet paper scraps

Abstract

The utility model discloses a screening machine for removing wet and strong paper scraps, which belongs to the technical field of papermaking pulping equipment and comprises a casing horizontally arranged in the axial direction, a pulp inlet area, a screening area and a deslagging area are sequentially arranged in the casing, a screen cylinder is fixedly mounted at the position of the screening area in the casing, and a transmission shaft driven by a power device is rotatably mounted in the casing. The two ends of the transmission shaft penetrate out of the shell, bearing seats are installed at the ends of the transmission shaft, a columnar rotor body is arranged on the transmission shaft, a slurry inlet is formed in the position, in the slurry inlet area, of the shell, a plurality of accelerating material uniformizing pieces are fixedly arranged on the end face, located in the slurry inlet area, of the rotor body, and heavy impurity collecting openings are formed in the positions, corresponding to the accelerating material uniformizing pieces, of the shell. A fiber defibering cutter is fixedly installed on the transmission shaft located in the slag discharging area, a tailing collecting opening is formed in the position, corresponding to the fiber defibering cutter, of the shell, and an accepted pulp outlet is formed in the end, away from the rotor body, of the shell. The utility model solves the technical problem that the content of wet-strength paper scraps in the pulp is high, and is widely applied to papermaking and pulping.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking and pulping equipment, in particular to a screening machine for removing wet-strength paper sheets. 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 often needs to be left standing for a long time to allow the heavy impurities to settle before being pumped into the separator for screening. However, the wet-strength paper flakes contained in the slurry cannot be dispersed during the screening process and will be discharged from the slag discharge port and then enter the screening process, clogging the screen drum and forming a vicious circle. How to solve the problem of high content of wet-strength paper flakes in slurry has always been a technical problem in this field.

[0003] Therefore, in the technical field of papermaking and pulping equipment, there is still a need for research and improvement on screening machines for removing wet-strength paper sheets. This is also a research hotspot and focus in the current technical field of papermaking and pulping equipment, and it 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 for removing wet-strength paper sheets, so as to solve the technical problem of high fiber content in the pulp after screening.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a screening machine for removing wet-strength paper sheets, comprising a shell arranged axially and horizontally, wherein a pulp feeding area, a screening area and a slag discharge area are sequentially arranged in the shell, a screen drum is fixedly installed at the screening area position in the shell, 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, and at least one set of rotors is arranged on the outer peripheral surface of the rotor body, and the rotor includes a plurality of wing seats protruding from the rotor body The two adjacent wing seats are staggered in the axial direction of the rotor body, and the shell body is provided with a water inlet and a slurry outlet corresponding to the rotor wings. The shell body of the slurry inlet area is provided with a slurry inlet. The end surface of the rotor body located in the slurry inlet area is fixedly provided with a plurality of accelerating material-leveling sheets, and the shell body is provided with a heavy impurity collection port corresponding to the position of the accelerating material-leveling sheets. A fiber decomposing knife is fixedly installed on the transmission shaft of the slag discharge area, and a tailings collection port is provided on the shell body corresponding to the position of the fiber decomposing knife. A good slurry outlet is provided on the shell body at one end away from the rotor body, and a screen plate is provided between the good slurry outlet and the fiber decomposing knife, and the transmission shaft passes through the screen plate.

[0006] As an improvement, the outer peripheral surface of the rotor body is provided with several groups of rotor blades, the corresponding water inlet is located at the upstream position of the wing seat in the group of rotor blades close to the slurry inlet, and the corresponding slurry outlet is located at the relative position of the wing seat in the group of rotor blades away from the slurry inlet.

[0007] As a further improvement, the end of the accelerating screed extends out of the outer circumference of the rotor body and extends to the screen drum position.

[0008] As a further improvement, the cross-sectional shape of the accelerating material-leveling piece is rectangular, and an angle is formed between the extending direction of the accelerating material-leveling piece and the radial direction of the end face of the rotor body.

[0009] As a further improvement, an inclination angle is provided between the pulp facing surface of the accelerating material leveling piece and the end surface of the rotor body.

[0010] As a further improvement, a jet water pipe connected to the slurry inlet area is provided on the shell, and the jet direction of the jet water pipe is along the tangent direction of the shell.

[0011] As a further improvement, the fiber debonding knife comprises a plurality of blades in a circular array, the ends of the blades extend to the screen drum position, and the extended shape of the blades is an arc.

[0012] As a further improvement, the angle between the blade edge and the blade face of the blade is 75 degrees.

[0013] As another improvement, the shell includes an upper half and a lower half, the upper half and the lower half are connected by fasteners, and the slurry inlet, heavy impurity collection port, tailings collection port, good slurry outlet, water inlet and slurry outlet are all arranged on the lower half.

[0014] 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 slurry inlet and the heavy impurity collection port are arranged on the right half, the tailings collection port and the good slurry outlet are arranged on the left half, and each group of the water inlet and the slurry outlet is correspondingly arranged on the corresponding intermediate body.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 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 vertical equipment bearing is 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 bearing. 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 further reduces the equipment manufacturing and maintenance costs. In addition, due to the provision of an accelerating material leveling sheet, on the one hand, as the rotor body rotates, the slurry in the slurry inlet area is generated Agitation speeds up the slurry flow rate in the slurry inlet area and improves the screening efficiency. On the other hand, the accelerating material leveling sheet agitates the slurry, causing eddy currents in the slurry. Heavy impurities are separated at the periphery close to the shell under the action of centrifugal force and can be collected in the heavy impurity storage tank through the heavy impurity collection port for storage, reducing the number of heavy impurities entering the screening area. There is no need to separate the heavy impurities by standing, greatly shortening the slurry pretreatment cycle and improving the pulping efficiency. In addition, since a fiber decomposition knife is provided in the slag discharge area, the wet-strength paper sheets discharged from the screening area are broken into wet-strength fibers under the action of the decomposition knife, pass through the screen plate, and are recycled with the good pulp instead of being discharged with the coarse slag, reducing waste and avoiding the vicious cycle of re-screening the coarse slag.

[0017] Since the slurry inlet area is equipped with an accelerating material-leveling sheet and the slag discharge area is equipped with a deflaking knife, slurry pretreatment, screening, deflaking and slag discharge are realized on one device. The overall structure of the equipment is simple, the footprint is small, the process flow is less, and the slurry treatment cycle is short. It completely solves the vicious cycle problem of wet-strength paper sheets in traditional screening equipment and greatly shortens and simplifies the pulping process.

[0018] Since a jet water pipe connected to the slurry inlet area is provided on the shell, the jet water pipe provides jet water on the one hand 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, which causes the slurry to generate eddy flow and increase the flow rate, further improving the separation effect of heavy impurities.

[0019] Since the shell includes an upper body and a lower body, the slurry inlet, heavy impurity collection port, tailings collection port, good slurry outlet, water inlet and slurry outlet are all arranged on the lower body, and the pipeline connections are all arranged on the lower body. During maintenance, the upper body 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.

[0020] 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

[0021] 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.

[0022] 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.

[0023] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the arrangement of the accelerating material leveling sheet in the first embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the accelerating material leveling sheet in the first embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the fiber detangling knife in the first embodiment of the utility model;

[0027] Figure 5yes Figure 4 A schematic diagram of the cross-sectional enlarged structure of AA in the middle;

[0028] Figure 6 It is a structural schematic diagram of the second embodiment of the utility model;

[0029] Figure 7 It is a structural schematic diagram of the third embodiment of the utility model;

[0030] In the figure: 1, shell, 101, slurry inlet, 102, heavy impurity collection port, 103, water inlet, 104, slurry outlet, 105, tailings collection port, 106, good slurry outlet, 107, lower body, 108, upper body, 109, right half, 110, left half, 111, intermediate body, 2, screen drum, 3, transmission shaft, 4, rotor body, 5, wing seat, 6, bearing seat, 7, sealing packing, 8, acceleration and leveling sheet, 9, fiber decomposition knife, 901, blade, 902, blade, 903, knife surface, 10, jet water pipe, 11, screen plate. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] Embodiment 1:

[0034] like Figure 1As shown, the utility model provides a screening machine for removing wet-strength paper sheets, including a shell 1 axially arranged horizontally, wherein a pulp feeding area, a screening area and a slag discharge area are sequentially arranged in the shell 1, a screen drum 2 is fixedly installed at the screening area position in the shell 1, a transmission shaft 3 driven by a power device is rotatably installed in the shell 1, the transmission shaft 3 is coaxially arranged with the shell 1, and the power device is usually a belt transmission device driven by a motor. This device is a common technology in the field and is not described in detail here. Both ends of the transmission shaft 3 pass through the shell 1 and bearing seats 6 are installed at the ends. The bearing seats 6 are arranged outside the shell 1, which solves the technical problem that the bearings of the vertical equipment are located in the shell 1, which makes maintenance difficult and costly, is convenient for lubrication and cooling, reduces the number of bearing maintenance, and prolongs the service life of the bearings. A sealing filler 7 is provided between the transmission shaft 3 and the shell 1. Compared with the traditional vertical equipment, only the sealing filler 7 is required to achieve the connection between the shell 1 and the transmission shaft 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3. The invention relates to a sealing method for the impurity filter 3.

[0035] The shell 1 of the slurry inlet area is provided with a slurry inlet 101, and the slurry entering direction of the slurry inlet is along the tangent direction of the shell 1, so that the slurry forms a vortex. The end surface of the rotor body 4 located in the slurry inlet area is fixedly provided with a plurality of accelerating material-splitting pieces 8, and the plurality of accelerating material-splitting pieces 8 are arranged in a ring array on the end surface of the rotor body 4, such as Figure 2 and Figure 3As shown, the end of the accelerating material leveling piece 8 extends out of the outer periphery of the rotor body 4 and extends to the position of the screen drum 2. The cross-sectional shape of the accelerating material leveling piece 8 is rectangular, and the extending direction of the accelerating material leveling piece 8 is provided with an angle with the radial direction of the end face of the rotor body 4, that is, the accelerating material leveling piece 8 is arranged along the chord length direction, and the line connecting the head end of the accelerating material leveling piece 8 and the center of the end face of the rotor body 4 and the line connecting the tail end of the accelerating material leveling piece 8 and the center of the end face of the rotor body 4 are acute angles. An inclination angle is provided between the slurry-facing surface of the accelerating material leveling piece 8 and the end face of the rotor body 4, and an inclination angle is provided between the slurry-facing surface of the accelerating material leveling piece 8 and the end face of the rotor body 4, and the inclination angle is generally 75±5 degrees, so that the accelerating material leveling piece 8 forms a slurry-facing surface and a back slurry surface, and the slurry-facing surface faces the screening channel, pushing the slurry to quickly enter the screening area, further improving the accelerating stirring effect of the accelerating material leveling piece 8. A heavy impurity collection port 102 is provided on the shell 1 at the position corresponding to the accelerating leveling piece 8. On the one hand, the accelerating leveling piece 8 stirs the slurry in the slurry inlet area as the rotor body 4 rotates, thereby accelerating the slurry flow rate in the slurry inlet area and improving the screening efficiency. On the other hand, the accelerating leveling piece 8 stirs the slurry, causing the slurry to produce vortexes. Heavy impurities are separated at the periphery near the shell 1 under the action of centrifugal force and can be collected through the heavy impurity collection port 102 and stored in the heavy impurity storage tank, 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.

[0036] A jet water pipe 10 connected to the slurry inlet area is provided on the shell 1. The jet direction of the jet water pipe 10 is along the tangential direction of the shell 1. On the one hand, the jet water pipe 10 provides 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.

[0037] A fiber decomposing knife 9 is fixedly installed on the transmission shaft 3 located in the slag discharge area, and the end of the fiber decomposing knife 9 extends to the position of the screen drum 2. A screening channel connected to the slag discharge area is provided between the rotor body 4 and the screen drum 2. The pulp containing the wet-strength paper sheet enters the slag discharge area from the screening area. As the transmission shaft 3 rotates, the fiber decomposing knife 9 extends out of the rotor body 4 to cut the screening channel, and the wet-strength paper sheet is decompressed into wet-strength fibers. A tailings collecting port 105 is provided on the shell 1 corresponding to the position of the fiber decomposing knife 9. The slag discharge direction of the tailings collecting port 105 is radially arranged along the rotation direction of the fiber decomposing knife 9. A good pulp outlet 106 is provided on the shell 1 of the slag discharge area at one end away from the rotor body 4. The good pulp outlet 106 A sieve plate 11 is provided between the fiber decomposing knife 9. The sieve plate 11 may be a hole sieve or a slot sieve. The selection by technicians in this field depends on the pulp. It is not limited here. The transmission shaft 3 passes through the sieve plate 11. On the one hand, the fiber decomposing knife 9 stirs the slag-containing pulp in the slag discharge area as the transmission shaft 3 rotates, so that the pulp produces a vortex. The coarse slag is separated under the action of centrifugal force and can be collected into a tailings storage tank through the tailings collection port 105. On the other hand, the wet-strength paper sheets in the pulp are decomposed into wet-strength fibers by the fiber decomposing knife 9, pass through the sieve plate 11, and are discharged and collected from the good pulp outlet 106, which reduces fiber waste and avoids the vicious cycle of screening the tailings again.

[0038] like Figure 4 and Figure 5 As shown, the fiber debonding knife 9 includes a plurality of blades 901 in an annular array. The number of blades 901 can be set to different numbers according to the different end face diameters of the rotor body 4. The technicians in this field can set it by themselves and will not go into details here. The end of the blade 901 extends to the position of the screen drum 2. The angle between the blade 902 and the blade surface 903 of the blade 901 is 75 degrees, which has good debonding performance and extends the service life of the blade 901. The extended shape of the blade 901 is arc-shaped, which has a longer debonding surface compared to the straight line design, further improving the debonding effect.

[0039] The outer circumference of the rotor body 4 is provided with a plurality of rotor blades, the corresponding water inlet 103 is located at the upstream position of the wing seat 5 in the rotor blade group close to the slurry inlet 101, and the corresponding slurry outlet 104 is located at the relative position of the wing seat 5 in the rotor blade group away from the slurry inlet 101. The plurality of rotor blades is provided, that is, the slurry separation stages are more, the slurry particle size is smaller as it goes downstream, and the slurry discharged from the slurry outlet 104 is finer.

[0040] The slurry enters the slurry inlet 101 into the slurry inlet area, and at the same time, the jet water pipe 10 injects dilution water to reduce the slurry concentration and improve the slurry fluidity. At this time, the rotor body 4 drives the accelerating material-leveling sheet 8 to cause the slurry to generate vortex, and the heavy impurities are separated at the periphery near 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 pretreated slurry enters the screening area through the screening channel between the rotor body 4 and the screen drum 2 under the action of pressure, and the slurry is screened between the wing seat 5 and the screen drum 2. The slurry of different particle sizes is discharged from the corresponding slurry outlet 104, and the upstream The pulp outlet 104 discharges coarse pulp with a particle size of 1.2 mm-2.5 mm. The pulp becomes finer as it goes downstream. The pulp outlet 104 at the tail end discharges refined pulp with a particle size of 0.12-0.25. Then, the slag-containing pulp enters the slag discharge area from the screening area. At this time, the transmission shaft 3 drives the fiber decomposition knife 9 to cause the slag-containing pulp to generate a vortex. The coarse slag is separated at the periphery near the shell 1 under the action of centrifugal force, and is collected in the slag storage tank through the tailings collection port 105 for storage, while the wet-strength paper sheets are decomposed into wet-strength fibers, which are discharged and collected through the good pulp outlet 106 after passing through the screen plate 11.

[0041] The utility model realizes pulp pretreatment, screening, delamination and slag removal on one device. The overall structure of the equipment is simple, the footprint is small, the process flow is less, the pulp treatment cycle is short, and the problem of vicious cycle of wet-strength paper sheets in traditional screening equipment is completely solved, and the pulping process is greatly shortened and simplified.

[0042] Embodiment 2:

[0043] The utility model provides a screening machine for removing wet-strength paper sheets, the structure of which is basically the same as that of the first embodiment, except that Figure 6 As shown, the shell 1 includes an upper body 108 and a lower body 107, and the upper body 108 and the lower body 107 are connected by fasteners. The upper body 108 can be provided with an exhaust port, and the slurry inlet 101, the jet water pipe 10, the heavy impurity collection port 102, the tailings collection port 105, the good slurry outlet 106, the water inlet 103 and the slurry outlet 104 are all arranged on the lower body 107, and the pipeline connections are all arranged on the lower body 107. During maintenance, the upper body 108 can be easily opened to clean or replace the screen drum 2 or the wing seat 5, which reduces the labor intensity of the operator, saves maintenance time, and reduces maintenance costs.

[0044] Embodiment three:

[0045] The utility model provides a screening machine for removing wet-strength paper sheets, the structure of which is basically the same as that of the first embodiment, except that Figure 7As shown, the shell 1 includes a left half body 110, a right half body 109 and a plurality of intermediate bodies 111 arranged along the axial direction, the intermediate body 111 is located between the left half body 110 and the right half body 109, the left half body 110, the intermediate body 111 and the right half body 109 are connected in sequence by fasteners, the slurry inlet 101 and the heavy impurity collection port 102 are arranged on the right half body 109, the tailings collection port 105 and the good slurry outlet 106 are arranged on the left half body 110, and each group of water inlet 103 and slurry outlet 104 are correspondingly arranged on the corresponding intermediate body 111. When this structure is maintained, the part that needs to be maintained can be 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.

[0046] 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 for removing wet-strength paper sheets, comprising a housing arranged horizontally in an axial direction, wherein a pulp feeding area, a screening area and a slag discharge area are sequentially arranged in the housing, and a screen drum is fixedly installed in the screening area in the housing, 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, and at least one set of rotors is arranged on the outer peripheral surface of the rotor body, the rotor includes 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 water inlet and a slurry outlet are arranged on the shell corresponding to the rotor, a slurry inlet is provided on the shell of the slurry inlet area, a plurality of accelerating material-leveling sheets are fixedly arranged on the end surface of the rotor body located in the slurry inlet area, a heavy impurity collection port is provided on the shell corresponding to the position of the accelerating material-leveling sheet, a fiber decomposition knife is fixedly installed on the transmission shaft of the slag discharge area, a tailings collection port is provided on the shell corresponding to the position of the fiber decomposition knife, a good slurry outlet is provided on the shell of the slag discharge area away from the rotor body, a screen plate is provided between the good slurry outlet and the fiber decomposition knife, and the transmission shaft passes through the screen plate.

2. The screening machine for removing wet-strength paper sheets according to claim 1, characterized in that: The outer circumferential surface of the rotor body is provided with a plurality of groups of rotor blades, the corresponding water inlet is located at the upstream position of the wing seat of the group of rotor blades close to the slurry inlet, and the corresponding slurry outlet is located at the relative position of the wing seat of the group of rotor blades away from the slurry inlet.

3. The screening machine for removing wet-strength paper sheets according to claim 1, characterized in that: The end of the accelerating screed extends out of the outer circumference of the rotor body and extends to the screen drum position.

4. The screening machine for removing wet-strength paper sheets according to claim 3, characterized in that: The cross-sectional shape of the accelerating material-splitting piece is rectangular, and an angle is formed between the extending direction of the accelerating material-splitting piece and the radial direction of the end surface of the rotor body.

5. The screening machine for removing wet-strength paper sheets according to claim 4, characterized in that: An inclination angle is arranged between the pulp-facing surface of the accelerating material-leveling piece and the end surface of the rotor body.

6. The screening machine for removing wet-strength paper sheets according to claim 1, characterized in that: The shell is provided with a jet water pipe connected to the slurry inlet area, and the jet direction of the jet water pipe is along the tangent direction of the shell.

7. The screening machine for removing wet-strength paper sheets according to claim 1, characterized in that: The fiber detangling knife comprises a plurality of blades in a circular array, the ends of the blades extend to the screen drum position, and the extending shape of the blades is an arc.

8. The screening machine for removing wet-strength paper sheets according to claim 7, characterized in that: The angle between the blade edge and the blade face of the blade is 75 degrees.

9. The screening machine for removing wet-strength paper sheets according to any one of claims 1 to 8, characterized in that: The shell includes an upper half and a lower half, the upper half is connected to the lower half by fasteners, and the slurry inlet, heavy impurity collection port, tailings collection port, good slurry outlet, water inlet and slurry outlet are all arranged on the lower half.

10. The screening machine for removing wet-strength paper sheets according to any one of claims 1 to 8, 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 slurry inlet and the heavy impurity collection port are arranged on the right half, the tailings collection port and the good slurry outlet are arranged on the left half, and each group of the water inlet and slurry outlet is correspondingly arranged on the corresponding intermediate body.

Images