CN210797084U - Waste paper pulping coarse screening system - Google Patents
Waste paper pulping coarse screening system Download PDFInfo
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- CN210797084U CN210797084U CN201921240065.8U CN201921240065U CN210797084U CN 210797084 U CN210797084 U CN 210797084U CN 201921240065 U CN201921240065 U CN 201921240065U CN 210797084 U CN210797084 U CN 210797084U
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Abstract
The utility model discloses a waste paper pulping coarse screening system, which comprises a medium-consistency coarse screening machine, a flotation light slag machine and a cylindrical screen, wherein the medium-consistency coarse screening machine, the flotation light slag machine and the cylindrical screen are sequentially connected and arranged, and the cylindrical screen is of a slotted screen structure; the slurry entering the coarse screening system passes through a medium-concentration coarse screening machine, the tail slurry enters a flotation light slag machine, and the tail slurry of the light slag machine enters a cylindrical screen to thoroughly separate light impurities from the slurry. The utility model discloses a scheme that thick sieve machine, the light sediment machine of flotation and cylinder sieve are selected for use to waste paper slurrying coarse screening system, and the cylinder sieve that its used for the seam sieve structure, improve continuous operation efficiency, the throughput is big, and the fibre loss rate is low, reaches the purpose that realizes high-efficient, low consumption, low pollution.
Description
Technical Field
The utility model belongs to the technical field of papermaking equipment, especially, relate to a waste paper slurrying coarse screening system.
Background
The existing waste paper pulping coarse screening system is unreasonable in design, so that the fiber loss rate is high. The utility model patent of publication No. CN205223719U provides a waste paper pulping, drifting system, and pulping, drifting flow have set gradually pulper, first middle pond, frame sieve that shakes, pond in the middle of the second, low pressure scummer, flotation machine, cylinder thickener, first stock chest, disc mill unit, second stock chest, net fore bay, surge tank, dashing the thick liquid pond, toper scummer, pressure screen, head tank and head box from the past backward. The waste paper pulping and drifting system completely meets the requirements of waste paper deinking pulping and paper purification.
The utility model discloses a wet strength waste paper recycling chemical machinery slurrying system is disclosed like bulletin number CN105648817B, include first conveying equipment, crushed aggregates machine, second conveying equipment, rotary drum washing machine, oblique screw dehydrator, steaming storehouse, third screw conveyer, first twin-screw impregnator, first reaction storehouse, fourth screw conveyer, second twin-screw impregnator, second reaction storehouse, fifth screw conveyer, the latent pulp chest that disappears, the stuff pump, the fiber separation machine, purify screening enrichment facility, the stock storage device according to material process operation direction of movement. The uniform blanking type reaction bin is utilized to realize uniform blanking and reduce the fluctuation range of load; the rotary material shifting type steaming bin is utilized to eliminate bridging, fully steam and soften materials, and reduce chemical consumption; the wet-strength waste paper is gradually dissociated by a double-screw impregnator, high-concentration mixing and homogenized impregnation of chemical additives and slurry are realized, and the chemical reaction efficiency is improved. By means of mechanical strength and chemical treatment, the problems of low dissociation rate and greatly reduced strength of wet-strength waste paper recycling pulping are solved.
The technical scheme disclosed above has the defect of high fiber loss rate.
In addition, the traditional pulping process selects a coarse screen tailings screen to separate light impurities in the tailings, and the effect is poor. Some cylindrical screen solutions are also disclosed in the prior art, but conventional cylindrical screens are used in continuous disintegrating systems (high consistency or low consistency) to remove the coarser shaped light impurities in the waste paper.
The utility model discloses a drum sieve as bulletin number CN205711536U, its technical scheme main points include the casing, set up and be equipped with the sieve mesh on inside circular cylinder, the cylinder of casing, are equipped with on the cylinder and are used for driving its pivoted power unit, are equipped with the ground paste between cylinder and the casing and retrieve the chamber, and the lower part of casing is equipped with the row's thick liquid mouth of retrieving the chamber intercommunication with the ground paste, and the below of arranging the thick liquid mouth is equipped with the ground paste and retrieves the pond, and the closing plate is passed through to the one end of cylinder sealed, and the other end is the slag notch, and the central point of closing plate puts and is connected with into the thick liquid pipe, be equipped. The baffle plate is arranged, so that the path of slurry passing through the roller is prolonged, the baffle plate is provided with the holes for communication, so that heavy impurities can be discharged out of the roller at an accelerated speed, and the efficiency is improved.
The utility model discloses a utility model like notice number CN202730528U relates to a drum screen, which comprises a motor, a shell and a screen drum, wherein the motor is in driving connection with the screen drum, the screen drum is arranged inside the shell, a water slurry recovery cavity is arranged between the screen drum and the shell, and a slurry discharge port communicated with the water slurry recovery cavity is arranged at the lower part of the shell; the inside of screen cylinder is equipped with the flight, and the flight is the heliciform setting round the axis of screen cylinder. Compared with the prior art, the utility model discloses a be equipped with spiral helicine helical blade in the screen cylinder and prolong the time that the sediment thick liquid passes through the drum sieve, make the impurity and the fibre of sediment thick liquid separate better, sieve effectually.
The utility model discloses a closed drum sieve, including the frame and rack-mounted sieve section of thick bamboo, the below of a sieve section of thick bamboo is equipped with the dressing trough, dressing trough and frame fixed connection, and the top of a sieve section of thick bamboo is equipped with the combination guard shield, and the frame upper end is equipped with the basin, and the bottom of basin is equipped with the delivery port, and the delivery port is linked together with the dressing trough, is equipped with the shower in the basin. The spraying water sputtering rebounding and partial slurry leakage at the top of the screen drum can be effectively prevented, and the environment pollution is avoided.
The above-mentioned publications are all cylinder sieves for low-concentration or high-concentration continuous disintegrating systems, the cylinder sieves of the low-concentration continuous disintegrating system are used for processing the pulp disintegrated by the D-type pulper, and the tail pulp after passing through the impurity separator enters the cylinder sieves again; the cylinder of the high-concentration continuous disintegrating system is used for treating the pulp disintegrated by the high-concentration pulper, and the pulp enters the cylinder screen after passing through the roughing machine. Because the continuous disintegrating system is positioned at the most initial position of the waste paper pulping process flow, the pulp has more impurities and larger volume, a sieve with holes of about 10mm is generally selected, and the volume of the screened light impurities is also larger.
And the good pulp treated by the continuous disintegrating system is screened by a coarse screening system to realize the thorough separation of light impurities in the tail pulp. As the pulp entering the coarse screening system is in different state from the pulp of the continuous disintegrating system, and the impurities in the pulp are different in types and sizes, the existing waste paper pulping coarse screening system cannot completely separate the light impurities in the tail pulp, so that the defects of small passing capacity and high fiber loss rate are caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a waste paper slurrying coarse screening system.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a waste paper pulping coarse screening system comprises a medium-concentration coarse screening machine, a flotation light slag machine and a cylindrical screen, wherein the medium-concentration coarse screening machine, the flotation light slag machine and the cylindrical screen are sequentially connected and arranged, and the cylindrical screen is of a slotted screen structure;
the slurry entering the coarse screening system passes through a medium-concentration coarse screening machine, the tail slurry enters a flotation light slag machine, and the tail slurry of the light slag machine enters a cylindrical screen to thoroughly separate light impurities from the slurry.
The cylindrical screen comprises a horizontally arranged machine body and a screen cylinder arranged in the machine body, wherein a pulp inlet and a tail pulp outlet are formed at two axial ends of the screen cylinder respectively, a good pulp recovery cavity is formed between the screen cylinder and the machine body, and a pulp discharge port communicated with the good pulp recovery cavity is formed at the lower part of the machine body; the screen drum is connected with a transmission device for driving the screen drum to rotate, and the inner wall of the screen drum is provided with guide plates which are spirally arranged along the axial direction of the screen drum, so that a spiral guide channel is formed on the inner wall of the screen drum; the screen slots extending along the axial direction are arranged on the screen drum in an array mode to form a slot screen structure.
A cleaning water pipe which penetrates through the good pulp recovery cavity along the axial direction is arranged at the upper part of the machine body; the cleaning water pipe is provided with cleaning nozzles pointing to the screen seams, the cleaning water pipe and the machine body form axial guide fit, the cleaning water pipe is connected with a cleaning driving device, and the cleaning driving device drives the cleaning water pipe to reciprocate along the axial direction of the cleaning water pipe.
The cleaning driving device comprises an electric push rod horizontally arranged with the cleaning water pipe, one end of the electric push rod is in transmission connection with a rotating motor, the rotating motor is located outside the machine body and is fixedly connected with the machine body, and the other end of the electric push rod is fixedly connected with the cleaning water pipe through an embracing ring.
A spray header which axially penetrates through the good pulp recovery cavity is arranged at the upper part of the machine body; the spray water pipe is provided with spray nozzles pointing to the screen cylinder, and the water sprayed out of the spray nozzles is in a fan shape vertical to the axial direction of the screen cylinder.
The lower part of the machine body is provided with a downward contracted slurry receiving disc structure, and the slurry discharge port is arranged at the lower position of the slurry receiving disc structure.
The organism is closed structure, and is equipped with the access hole on the organism, and access hole department is equipped with the shrouding rather than open-close type connection.
The transmission device comprises a driving shaft, a driving motor and a speed reducer, wherein the driving shaft, the driving motor and the speed reducer are arranged on the upper side of the machine body in a supporting mode, the driving motor drives the driving shaft to rotate through the speed reducer, belt driving wheels are arranged at two end portions of the driving shaft respectively, a belt driven wheel is arranged at a position, corresponding to the driving belt wheel, on the screen drum, and the corresponding belt driving wheel and the belt driven wheel are connected.
The utility model has the advantages that:
the utility model discloses a waste paper slurrying coarse screening system chooses for use the scheme of medium-consistency coarse screening machine, the light sediment machine of flotation and cylinder sieve, and medium-consistency coarse screening machine, the light sediment machine of flotation and cylinder sieve connect gradually and arrange, and the cylinder sieve that its used is the seam sieve structure, improves continuous operation efficiency, and the trafficability is big, and the fibre loss rate is low, reaches the purpose that realizes high-efficient, low consumption, low pollution.
The utility model discloses the organism upper portion of well drum sieve is equipped with the spray header that runs through good thick liquid recovery chamber along the axial, arranges the shower nozzle that sprays that is equipped with directional sieve section of thick bamboo on the spray header, and the blowout water shape that sprays the shower nozzle is for the fan-shaped form with sieve section of thick bamboo axial vertically, makes and sprays no dead angle.
The utility model discloses the organism upper portion of well drum sieve is equipped with the washing water pipe that runs through good thick liquid recovery chamber along the axial, arranges the washing shower nozzle that is equipped with directional screen cut on the washing water pipe, and washs the water pipe and form the axial direction cooperation with the organism, and the washing water union coupling has washing drive arrangement, washs drive arrangement drive and washs water pipe along its axial reciprocating motion, can wash every screen cut constantly, makes the screening district go on in succession without jam.
The utility model discloses well drum sieve's organism is closed structure, reduces environmental pollution, and is equipped with the access hole on the organism, and access hole department is equipped with the shrouding of being connected rather than open-close type, convenient follow-up maintenance.
The utility model discloses well cylinder screen's transmission is including supporting drive shaft, driving motor and the reduction gear of locating the organism upside, and driving motor passes through reduction gear drive shaft and rotates, and the both ends of drive shaft are equipped with the belt action wheel respectively, correspond the department with driving pulley on the sieve section of thick bamboo and be equipped with the belt from the driving wheel, and the belt action wheel and the belt that correspond pass through belt transmission from the driving wheel and connect to form top formula transmission structure, the transmission is steady, reduces the space, compact structure.
Drawings
FIG. 1 is a schematic structural diagram of a coarse screening system for pulping waste paper in an embodiment of the present invention;
FIG. 2 is a front view of a cylindrical screen in an embodiment of the present invention;
FIG. 3 is a left side view of a cylindrical screen in an embodiment of the present invention;
FIG. 4 is a right side view of a cylindrical screen in an embodiment of the present invention;
FIG. 5 is a top view of a cylindrical screen in an embodiment of the present invention;
figure 6 is a perspective view of a cylindrical screen in an embodiment of the present invention;
FIG. 7 is a schematic sectional view A-A of FIG. 5;
FIG. 8 is a schematic view of the protective cover and a portion of the housing of FIG. 1 removed;
FIG. 9 is a schematic structural view of a shower pipe portion in an embodiment of the present invention;
FIG. 10 is a schematic view of the structure of the shower head portion of FIG. 9;
fig. 11 is a schematic structural view of the water pipe cleaning portion in the embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the embodiment discloses a coarse screening system for pulping waste paper, which comprises a medium-consistency coarse screening machine 41, a flotation light slag machine 42 and a cylindrical screen 43, wherein the medium-consistency coarse screening machine 41, the flotation light slag machine 42 and the cylindrical screen 43 are sequentially connected and arranged, and the cylindrical screen 43 is in a slotted screen structure.
The pulp processed by the previous process (generally, a continuous disintegrating system, waste paper is processed into pulp by the continuous disintegrating system) enters a coarse screening system, the pulp passes through a medium-concentration coarse screening machine 41, the tail pulp enters a flotation light slag machine 42, the tail pulp of the light slag machine 42 enters a cylindrical screen 43 for the coarse screening system, and the cylindrical screen 43 for the coarse screening system thoroughly separates fine light impurities from the pulp, so that the purpose of purifying the pulp is achieved.
As shown in fig. 2 to 8, the cylindrical screen in the present embodiment includes a horizontally disposed machine body 1 and a screen drum 2 disposed in the machine body, wherein screen slots 20 extending in an axial direction are arranged in an array on the screen drum 2 to form a slotted screen structure. Organism 1 is closed structure, realizes closed screening, reduces environmental pollution, and is equipped with the access hole on the organism 1, and access hole department is equipped with shrouding 7 rather than open-close type connection, makes things convenient for follow-up maintenance.
The axial both ends of a screen drum 2 form into thick liquid mouth 4 and tail thick liquid mouth 3 respectively, form the good thick liquid between a screen drum 2 and the organism 1 and retrieve the chamber, and the lower part of organism 1 is equipped with the row's thick liquid mouth 5 with good thick liquid recovery chamber intercommunication. In this embodiment, the lower portion of the machine body 1 is provided with a slurry receiving tray structure 8 which contracts downwards, and the slurry outlet 5 is arranged at the lower position of the slurry receiving tray structure 8.
The screen drum 2 is connected with a transmission device 6 for driving the screen drum to rotate. In this embodiment, transmission 6 locates the drive shaft 61 of organism 1 upside including supporting, driving motor 62 and reduction gear 63, driving motor 62 passes through reduction gear 63 drive shaft 61 and rotates, the both ends of drive shaft 61 are equipped with belt drive wheel 64 respectively, correspond the department with driving pulley on the sieve section of thick bamboo 2 and be equipped with the belt from the driving wheel, the belt drive wheel 64 and the belt that correspond pass through belt transmission from the driving wheel and connect, thereby form the transmission structure of putting the top formula, the transmission is steady, reduce the space, compact structure. The belt driving wheel 64 is also provided with a protective cover 11.
In this embodiment, the machine body 1 is provided with a riding wheel which is matched with the screen drum 2 in a rolling manner, and an axial limiting matching part is arranged at a position on the screen drum 2 corresponding to the riding wheel, so that a riding wheel limiting supporting mechanism 9 is formed, and the screen conveying drum is more stable in running.
The inner wall of the screen cylinder 2 is provided with guide plates 21 which are spirally arranged along the axial direction of the screen cylinder, so that a spiral guide channel is formed on the inner wall of the screen cylinder 2, and material lifting plates 22 are arranged at intervals along the conveying direction of the spiral guide channel, thereby improving the screening and separating effects.
As shown in fig. 9 to 10, a spray water pipe 12 axially penetrating through the good pulp recovery cavity is arranged at the upper part of the machine body 1, spray nozzles 121 pointing to the screen cylinder are arranged on the spray water pipe 12, and the water sprayed out of the spray nozzles 121 is in a fan shape axially perpendicular to the screen cylinder, so that no dead angle is formed in the spraying.
As shown in fig. 11, the upper portion of the machine body 1 is further provided with a cleaning water pipe 13 penetrating through the good pulp recovery cavity along the axial direction, cleaning nozzles pointing to the screen seams are arranged on the cleaning water pipe 13, the cleaning water pipe and the machine body form axial guiding fit, the cleaning water pipe 13 is connected with a cleaning driving device, the cleaning driving device drives the cleaning water pipe to reciprocate along the axial direction of the cleaning water pipe, each screen seam can be continuously cleaned, and the screening area can be continuously performed without blockage.
In this embodiment, the two axial ends of the machine body 1 are respectively provided with a guide hole 131 corresponding to the cleaning water pipe 13, and the cleaning water pipe 13 is slidably penetrated through the guide holes 131 to form axial guiding matching of the cleaning water pipe 13 and the machine body 1.
In this embodiment, the cleaning driving device includes an electric push rod 14 horizontally disposed with the cleaning water pipe 13, one end of the electric push rod 14 is connected to the servo rotating motor 10 in a transmission manner, the servo rotating motor 10 is located outside the machine body 1 and is fixedly connected with the machine body 1, and the other end of the electric push rod 14 is fixedly connected with the cleaning water pipe 13 through the hoop 141. The servo rotating motor 10 drives the electric push rod 14 to reciprocate in a rotating mode, and therefore the cleaning water pipe 13 is driven to reciprocate in the axial direction.
In this embodiment, shower pipe and washing water pipe are located a sieve section of thick bamboo with one side, compact structure, and conveniently supply water.
The cylindrical screen in the implementation is suitable for the tail end of a coarse screening system behind a waste paper pulping process flow continuous decomposing system, adopts a slotted screen structure, and is mainly used for thoroughly separating light impurities in tail pulp by the tail end of the waste paper pulp coarse screening system.
The drum screen in this embodiment can effectively replace the coarse screen tailings screen in the traditional pulping process, relatively speaking, the motor that this drum screen installed is much less, and the same output coarse screen tailings screen should join in marriage 200KW motor, this as long as 11KW, energy-conserving effect is obvious.
The scheme of medium-concentration coarse screening machine, flotation light slag machine and cylinder screen is selected for the waste paper pulping coarse screening system of this embodiment, and the cylinder screen that uses is the slotted screen structure, improves continuous operation efficiency, and the trafficability is big, and the fibre loss rate is low, reaches the purpose that realizes high efficiency, low consumption, low pollution.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
In the description of the present invention, it should be understood that the terms "front", "back", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the description refers must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Claims (8)
1. The utility model provides a waste paper pulping coarse screening system which characterized in that: the device comprises a medium-concentration coarse screening machine, a flotation light slag machine and a cylindrical screen, wherein the medium-concentration coarse screening machine, the flotation light slag machine and the cylindrical screen are sequentially connected and arranged, and the cylindrical screen is of a slotted screen structure;
the slurry entering the coarse screening system passes through a medium-concentration coarse screening machine, the tail slurry enters a flotation light slag machine, and the tail slurry of the light slag machine enters a cylindrical screen to thoroughly separate light impurities from the slurry.
2. The used paper pulping coarse screening system of claim 1, wherein: the cylindrical screen comprises a horizontally arranged machine body and a screen cylinder arranged in the machine body, wherein a pulp inlet and a tail pulp outlet are formed at two axial ends of the screen cylinder respectively, a good pulp recovery cavity is formed between the screen cylinder and the machine body, and a pulp discharge port communicated with the good pulp recovery cavity is formed at the lower part of the machine body; the screen drum is connected with a transmission device for driving the screen drum to rotate, and the inner wall of the screen drum is provided with guide plates which are spirally arranged along the axial direction of the screen drum, so that a spiral guide channel is formed on the inner wall of the screen drum; the screen slots extending along the axial direction are arranged on the screen drum in an array mode to form a slot screen structure.
3. The used paper pulping coarse screening system of claim 2, wherein: a cleaning water pipe which penetrates through the good pulp recovery cavity along the axial direction is arranged at the upper part of the machine body; the cleaning water pipe is provided with cleaning nozzles pointing to the screen seams, the cleaning water pipe and the machine body form axial guide fit, the cleaning water pipe is connected with a cleaning driving device, and the cleaning driving device drives the cleaning water pipe to reciprocate along the axial direction of the cleaning water pipe.
4. The used paper pulping coarse screening system of claim 3, wherein: the cleaning driving device comprises an electric push rod horizontally arranged with the cleaning water pipe, one end of the electric push rod is in transmission connection with a rotating motor, the rotating motor is located outside the machine body and is fixedly connected with the machine body, and the other end of the electric push rod is fixedly connected with the cleaning water pipe through an embracing ring.
5. The used paper pulping coarse screening system of claim 2, wherein: a spray header which axially penetrates through the good pulp recovery cavity is arranged at the upper part of the machine body; the spray water pipe is provided with spray nozzles pointing to the screen cylinder, and the water sprayed out of the spray nozzles is in a fan shape vertical to the axial direction of the screen cylinder.
6. The used paper pulping coarse screening system of claim 2, wherein: the lower part of the machine body is provided with a downward contracted slurry receiving disc structure, and the slurry discharge port is arranged at the lower position of the slurry receiving disc structure.
7. The used paper pulping coarse screening system of claim 2, wherein: the organism is closed structure, and is equipped with the access hole on the organism, and access hole department is equipped with the shrouding rather than open-close type connection.
8. The used paper pulping coarse screening system of claim 2, wherein: the transmission device comprises a driving shaft, a driving motor and a speed reducer, wherein the driving shaft, the driving motor and the speed reducer are arranged on the upper side of the machine body in a supporting mode, the driving motor drives the driving shaft to rotate through the speed reducer, belt driving wheels are arranged at two end portions of the driving shaft respectively, a belt driven wheel is arranged at a position, corresponding to the driving belt wheel, on the screen drum, and the corresponding belt driving wheel and the belt driven wheel are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240065.8U CN210797084U (en) | 2019-08-02 | 2019-08-02 | Waste paper pulping coarse screening system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240065.8U CN210797084U (en) | 2019-08-02 | 2019-08-02 | Waste paper pulping coarse screening system |
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| Publication Number | Publication Date |
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| CN210797084U true CN210797084U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921240065.8U Active CN210797084U (en) | 2019-08-02 | 2019-08-02 | Waste paper pulping coarse screening system |
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| CN (1) | CN210797084U (en) |
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- 2019-08-02 CN CN201921240065.8U patent/CN210797084U/en active Active
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