CN208562978U - A kind of pretreatment unit of waste paper pulp-making - Google Patents

Abstract

The utility model discloses a kind of pretreatment units of waste paper pulp-making, are related to Waste Paper Handling field, and the pretreatment unit of the waste paper pulp-making includes low speed constant temperature pulper, high-speed constant-temperature pulper, primary dcreening operation pressurized screen, the fine screen pressurized screen set gradually；It is provided in the primary dcreening operation pressurized screen and the first rotor of primary dcreening operation pressurized screen rotation connection, the first rotor, the wave screen drum outside first rotor that are fixed on the first rotor；It is provided on the fine screen pressurized screen and the second rotor of fine screen pressurized screen rotation connection, the second rotor, the fine screen screen cylinder outside second rotor that are fixed on second rotor；By being segmented pulping using low speed constant temperature pulper, high-speed constant-temperature pulper, different size impurity can be efficiently separated in paper pulp after dual-pressure is sieved again, it solves the problems, such as that existing processing unit waste paper utilization rate is not high, has the advantages that improve waste paper utilization rate.

Description

A kind of pretreatment unit of waste paper pulp-making

Technical field

The utility model relates to Waste Paper Handling field, in particular to a kind of pretreatment unit of waste paper pulp-making.

Background technique

Waste Paper Handling is reprocessed to the waste paper of recycling, and the process that qualified fiber is used to produce paper products is obtained, The recycling and utilization of waste paper are conducive to protect environment, conserve forests, economize on resources；Waste paper pulp-making, which refers to, utilizes chemical method, machine The method that tool method or both combines makes plant fiber material dissociation become the production process of true qualities or bleached pulp, usually adopts Technical process is by plant fiber material crushing, boiling, washing, screening, bleaching, purification, drying.

Authorization Notice No. is that the Chinese patent of CN205711533U discloses a kind of continuous recovery processing system of waste paper slurry System, including the first slurry holding tank, slag crusher, the second slurry holding tank, scummer and pressurized screen, the first slurry holding tank with it is broken The input terminal of slag machine connects, and the output end of slag crusher is connect with the feed inlet of the second slurry holding tank, the second slurry holding tank The connection of the stock inlet of discharge port and scummer, the grout outlet of scummer and the input terminal of pressurized screen connect, and pressurized screen includes good slurry Outlet and slag-drip opening, slag-drip opening connect Solid state fermentation system, good slurry outlet connection papermaking pulping system.

It is in place of the deficiencies in the prior art, slurry is first passed through size degradation in slag crusher by above-mentioned continuous recovery and processing system, It is precipitated in the second slurry holding tank again, slurries is then delivered to scummer and remove heavy seeds, finally by pressurized screen Further separate impurity；Waste paper fibre cuts off size degradation by slag crusher too much, and after precipitating slagging-off, more waste paper fibre is lost In precipitated impurities and heavy seeds, the waste paper utilization rate of the processing system is not high.

Summary of the invention

The purpose of the utility model is to provide a kind of pretreatment units of waste paper pulp-making, and which solve the processing of existing secondary stock The not high problem of device waste paper utilization rate has the advantages that improve waste paper utilization rate.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of pretreatment unit of waste paper pulp-making, including set gradually low speed constant temperature pulper, high-speed constant-temperature pulper, Primary dcreening operation pressurized screen, fine screen pressurized screen；First turn with primary dcreening operation pressurized screen rotation connection is provided in the primary dcreening operation pressurized screen Son, the first rotor, the wave screen drum outside first rotor being fixed on the first rotor；The fine screen pressurized screen On be provided with and the fine screen pressurized screen rotation connection the second rotor, be fixed on second rotor the second rotor, position Fine screen screen cylinder outside second rotor.

Using the above scheme, by obtaining fiber using low speed constant temperature pulper, high-speed constant-temperature pulper segmentation pulping Shear action and frictional force appropriate, avoid fiber from excessively cutting off and be destroyed, and improve waste paper utilization rate, meet environmentally friendly papermaking and want It asks；Primary dcreening operation pressurized screen removes effectively large granular impurity using the first rotor combination wave screen drum, weeds out by fine screen pressure Except most of sicker, different size impurity can be efficiently separated in paper pulp after dual-pressure is sieved, while rotor is along sieve Drum apparent motion, screen cylinder is inside and outside to generate pressure difference, promotes waste paper fibre by screen cylinder, further increases waste paper utilization rate.

Further preferably are as follows: the second driving machine for driving the second rotor rotation is provided in the fine screen pressurized screen Structure；Second rotor is multiple the second blades for being fixed on the second rotor outer wall, and second blade is along described second Rotor is circumferentially uniformly distributed to multiple groups, second blade is divided into along second rotor.

Using the above scheme, being realized by the inside and outside differential pressure of fine screen screen cylinder on fine screen screen cylinder of good slurry, by making the Two blades are evenly distributed on the second rotor, and for the second rotor in rotary course, the second blade is right along fine screen screen cylinder apparent motion The pressure that slurry generates is uniform, allows the good slurry of the second rotor circumferential direction uniformly across fine screen screen cylinder, further increases waste paper The utilization rate of slurry.

Further preferably are as follows: the first driving machine for driving the first rotor rotation is provided in the primary dcreening operation pressurized screen Structure, first rotor are multiple circumferentially fixed the first blades in the first rotor outer wall, and first blade is described in The axially inclined setting of the first rotor avoids secondary stock from being wound on first blade.

Using the above scheme, the first blade is arranged in rotor outer wall, while the first axial slope blade is arranged, keeps weight miscellaneous Matter is settled by downward pressure, and the impurity to suspend is avoided to be wrapped on the first rotor and the first rotor, reduce the first rotor by The resistance arrived improves the first rotor efficiency.

Further preferably are as follows: be provided on the fine screen pressurized screen be connected to second rotor and the fine screen screen cylinder it Between thick slurry entrance and slag-drip opening, be connected between the inner wall of the fine screen pressurized screen and the fine screen screen cylinder good slurry outlet, Spacing in every group between second blade is gradually increased along the thick slurry entrance to the slag-drip opening direction.

Using the above scheme, at due to the impurities sink down to slag-drip opening in slightly starching, waste paper fibre part stays on thick slurry more Portion, for adapt to fine screen pressurized screen slightly starch entrance between slag-drip opening in secondary stock the concentration of waste paper fibre and impurity difference, it is right Second blade of the different piece setting different number of fine screen pressurized screen, so that load suffered by second blade each section is close, Under the premise of not influencing secondary stock utilization rate, it is possible to reduce the energy consumption in secondary stock preprocessing process reduces waste paper pulp-water Processing cost.

Further preferably are as follows: high-pressure hydraulic pump is provided on the primary dcreening operation pressurized screen, the primary dcreening operation pressurized screen inner wall is fixed with Multiple high-pressure nozzles, the high-pressure nozzle are connected to the high-pressure hydraulic pump.

Using the above scheme, after secondary stock enters primary dcreening operation pressurized screen, impurity settles downwards aggregation, while the first rotor is along wave Line screen cylinder apparent motion, which generates pressure difference, makes thick starch pass through wave screen drum；By transporting water to high-pressure nozzle, height using high-pressure hydraulic pump Pressure water is sprayed onto wave screen drum surface, and the kinetic energy of high pressure water is transferred on impurity, makes to be blocked in miscellaneous in the sieve pore of wave screen drum Matter is detached from wave screen drum, avoids the sieve pore of blocking from preventing that slightly starches from passing through, further increases the utilization rate of waste paper.

Further preferably are as follows: the high-pressure nozzle is along second rotor to high pressure spray described in multiple groups arranged side by side Head, the high-pressure nozzle is circumferentially uniformly distributed along the primary dcreening operation pressurized screen and the fine screen pressurized screen in every group.

Using the above scheme, high-pressure hydraulic can be carried out flushing to wave screen drum surface by high-pressure nozzle, avoid ripple The cleaning of screen cylinder portion is not thorough, and further increases the utilization rate of waste paper.

Further preferably are as follows: be provided on the primary dcreening operation pressurized screen be connected to first rotor and the wave screen drum it Between pulp inlet and weight slag outlet, be connected between the inner wall and the wave screen drum of the primary dcreening operation pressurized screen slightly starching out Mouthful, high-pressure nozzle described in every group is gradually reduced along the pulp inlet to the width between the heavy slag export direction.

Using the above scheme, since the impurities sink down in secondary stock is to weight slag exit, waste paper fibre part stays in useless more The top of paper pulp, for adapt to scalping pressurized screen pulp inlet between the outlet of weight slag in secondary stock the concentration of impurity difference, i.e., The difference of ripple sieve each section chocking-up degree, to the high pressure water of the different piece supply different volumes of ripple sieve, so that wave Line sieve each section can be rinsed effectively, under the premise of not influencing secondary stock utilization rate, it is possible to reduce secondary stock is pre- Energy consumption in treatment process reduces secondary stock cost of water treatment.

Further preferably are as follows: circumferentially arranged in the wave screen drum to have several deflectors, the deflector and described the The rotation direction of one rotor is tangent, and the deflector is circumferentially uniformly distributed along the wave screen drum.

Using the above scheme, the rotation of the first rotor flows secondary stock therewith, when secondary stock is flowed through along deflector, is led Flowing plate guiding role forms microturbulence around deflector, and microturbulence drives wave screen drum surface to generate micro- vibration therewith, avoids giving up Impurity in paper pulp blocks wave screen drum.

Further preferably are as follows: the junction of the deflector and the wave screen drum is provided with guide surface, and secondary stock is along institute It states guide surface and is guided to the deflector.

Both using the above scheme, it is seamlessly transitted by wave screen drum when setting guide surface and deflector junction, avoid Junction generates dead angle, increases cleaning difficulty.

Further preferably are as follows: the deflector is provided with multiple apertures along its length.

Using the above scheme, during high pressure water cleaning, high pressure water sprays clear to progress on the first rotor by aperture It washes, while high pressure water passed through aperture and diffuses to the end face that baffle deviates from spray head, cleans to it, further increases cleaning effect Fruit.

In conclusion the utility model has the following beneficial effects:

1. making fiber obtain shearing work appropriate by being segmented pulping using low speed constant temperature pulper, high-speed constant-temperature pulper With and frictional force, avoid fiber from excessively cutting off and be destroyed, improve waste paper utilization rate；

2. designing the first rotor combination corrugated sieve during scalping efficiently separates large granular impurity, designs and divide during fine screen Second rotor of section load type removes most of sicker, and after dual-pressure is sieved can there is different size impurity in paper pulp Effect separation；

3. by setting high-pressure hydraulic pump combination high-pressure nozzle to being cleaned inside primary dcreening operation pressurized screen, avoid waste paper fibre because Wave screen drum blocks and can not improve the secondary stock separating effect of primary dcreening operation pressurized screen by wave screen drum.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the pretreatment unit of the waste paper pulp-making of embodiment；

Fig. 2 is the connection relationship diagram of the primary dcreening operation pressurized screen of embodiment；

Fig. 3 is the cleaning mechanism of embodiment and the connection relationship diagram of wave screen drum；

Fig. 4 is the connection relationship diagram of the fine screen pressurized screen of embodiment；

Fig. 5 is the second rotor of embodiment and the connection relationship diagram of rotor.

Appended drawing reference: 1, low speed constant temperature pulper；2, high-speed constant-temperature pulper；3, primary dcreening operation pressurized screen；31, the first shell； 32, the first rotor；33, the first driving mechanism；331, first bearing；332, the first belt pulley；333, first motor；334, first Driving wheel；335, the first driving belt；34, the first rotor；341, the first blade；35, wave screen drum；36, pulp inlet；37, The outlet of weight slag；38, thick slurry outlet；39, cleaning mechanism；391, deflector；392, guide surface；393, aperture；394, high-pressure nozzle； 395, high-pressure hydraulic pump；4, fine screen pressurized screen；41, second housing；42, the second rotor；43, the second driving mechanism；431, the second axis It holds；432, the second belt pulley；433, the second motor；434, the second driving wheel；435, the second driving belt；44, the second rotor； 441, the second blade；45, fine screen screen cylinder；46, entrance is slightly starched；47, slag-drip opening；48, good slurry outlet.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

A kind of pretreatment unit of waste paper pulp-making, as shown in Figure 1, including the low speed constant temperature pulper 1 set gradually, high speed Constant temperature pulper 2, primary dcreening operation pressurized screen 3, fine screen pressurized screen 4；Secondary stock first passes through low speed constant temperature pulper 1, high-speed constant-temperature pulping Machine 2 is segmented pulping, and fiber is made to obtain shear action appropriate and frictional force, is cut off fiber, using primary dcreening operation pressurized screen 3, 4 double filtration of fine screen pressurized screen efficiently separate different size impurity in paper pulp can.

Referring to Fig. 2, primary dcreening operation pressurized screen 3 include the first shell 31, the first rotor 32 being rotationally connected in the first shell 31, For driving the first driving mechanism 33 of 32 rotation of the first rotor；First driving mechanism 33 includes being set to 32 bottom of the first rotor First bearing 331, be set to 331 bottom of first bearing the first belt pulley 332, be set to outside the first shell 31 first electricity Machine 333, is sheathed on the first driving wheel 334 and the first skin at the first driving wheel 334 being fixed on the output shaft of first motor 333 The first driving belt 335 on belt wheel 332 drives the rotation of the first driving wheel 334 by first motor 333, drives the first belt 332 rotation of wheel, the first rotor 32 also rotate with it.

It is provided with wave screen drum 35 in first shell 31 and is fixed on the first rotor 34 of 32 outer wall of the first rotor, corrugated sieve Drum 35 is between the first shell 31 and the first rotor 34, and wave screen drum 35 is ripple slotted screen, and the first rotor 34 is multiple solid It is scheduled on the first blade 341 of 32 outer wall of the first rotor, the first blade 341 is uniformly distributed along the circumferential direction of 32 outer wall of the first rotor；The It is provided with the pulp inlet 36 being connected between the first rotor 34 and wave screen drum 35 and weight slag outlet 37 on one shell 31, is connected to To the thick slurry outlet 38 between the inner wall and wave screen drum 35 of primary dcreening operation pressurized screen 3；Wherein, pulp inlet 36 is located at the first shell 31 Top, thick slurry outlet 38 are located at 31 middle part of the first shell, and weight slag outlet 37 is located at 31 lower part of the first shell.

To avoid wave screen drum 35 from being blocked, cleaning mechanism 39 is provided on primary dcreening operation pressurized screen 3；Referring to Fig. 3, sanitizer cartridge It sets including multiple high-pressure nozzles 394 for being fixed on 31 inner wall of the first shell, be set on the first shell 31 and be connected to high-pressure nozzle 394 high-pressure hydraulic pump 395, high-pressure nozzle 394 are divided axially into five groups along shell, and four high-pressure nozzles 394 are one group and along shell It is circumferentially uniformly distributed, the spacing between every group of high-pressure nozzle 394 is successively successively decreased from top to bottom；Cleaning mechanism 39 includes multiple along week To the deflector 391 for being fixed on 35 inside of wave screen drum, the junction of deflector 391 and wave screen drum 35 is provided with guide surface 392, along its length uniformly through there is multiple apertures 393 on deflector 391.

After secondary stock enters primary dcreening operation pressurized screen 3, impurity settles downwards aggregation, while the first rotor 34 is along 35 table of wave screen drum Face movement, which generates pressure difference, to be made slightly to starch through wave screen drum 35, by transporting high pressure water to high-pressure nozzle using high-pressure hydraulic pump 395 394, then high pressure water is sprayed onto screen cylinder surface, and the kinetic energy of high pressure water is transferred on impurity, makes the sieve for being blocked in wave screen drum 35 Impurity in hole is detached from wave screen drum 35.

Referring to Fig. 4, fine screen pressurized screen 4 include second housing 41, the second rotor 42 being rotationally connected in second housing 41, For driving the second driving mechanism 43 of 42 rotation of the second rotor；Second driving mechanism 43 includes being set to 42 bottom of the second rotor Second bearing 431, be set to 431 bottom of second bearing the second belt pulley 432, be set to outside second housing 41 second electricity Machine 433, is sheathed on the second driving wheel 434 and the second skin at the second driving wheel 434 being fixed on the output shaft of the second motor 433 The second driving belt 435 on belt wheel 432 drives the rotation of the second driving wheel 434 by the second motor 433, drives the second belt 432 rotation of wheel, the second rotor 42 also rotate with it.

Fine screen screen cylinder 45 and the second rotor 44 are provided in second housing 41, fine screen screen cylinder 45 is located at second housing 41 and Between two rotors 44；Be provided on second housing 41 the thick slurry entrance 46 being connected between the second rotor 44 and fine screen screen cylinder 45 and Good slurry outlet 48 between slag-drip opening 47, the inner wall for being connected to fine screen pressurized screen 4 and fine screen screen cylinder 45；Wherein, entrance 46 is slightly starched Positioned at 41 top of second housing, good slurry outlet 48 is located at 41 middle part of second housing, and slag-drip opening 47 is located at 41 lower part of second housing.

Referring to Fig. 5, the second rotor 44 is multiple the second blades 441 for being fixed on rotor outer wall, the second of fine screen pressurized screen 4 Blade 441 is three groups of second blades 441 in equally distributed second blade 441 of rotor axial, every group along rotor outer wall It is circumferentially uniformly distributed, three group of second 441 quantity of blade is followed successively by five, four, three from top to bottom.

Working principle:

S1 preparation, start low speed constant temperature pulper 1,45 DEG C of constant temperature, revolving speed be 400-500 revs/min, secondary stock into Enter the preliminary pulping of low speed constant temperature pulper 1；

S2 starts high-speed constant-temperature pulper 2, and 45 DEG C of constant temperature, revolving speed is 1300-1500 revs/min, the waste paper after preliminary pulping Slurry enters the pulping again of high-speed constant-temperature pulper 2, and secondary stock pulping degree is suitable for；

S3 starts primary dcreening operation pressurized screen 3, and secondary stock enters in the first shell 31 through pulp inlet 36,1.5mm impurity below It by wave screen drum 35, is slightly starched outlet 38 and is expelled to fine screen pressurized screen 4, be then settled down to the heavy seeds of bottom through the outlet of weight slag 37 the first shells of discharge 31 are outer and recycle；

S4 starts fine screen pressurized screen 4, and the secondary stock after primary dcreening operation enters in second housing 41 through thick slurry entrance 46, most of Adhesive is blocked in fine screen screen cylinder 45, and shell is discharged by fine screen screen cylinder 45, through good slurry outlet 48 in good slurry, then adhesive Equal impurity are discharged outside second housing 41 and recycle through slag-drip opening 47.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as within the protection scope of the present utility model all by the protection of Patent Law.

Claims (10)

1. a kind of pretreatment unit of waste paper pulp-making, it is characterized in that: including the low speed constant temperature pulper (1) set gradually, high speed Constant temperature pulper (2), primary dcreening operation pressurized screen (3), fine screen pressurized screen (4)；It is provided with and the primary dcreening operation in the primary dcreening operation pressurized screen (3) The first rotor (32) of pressurized screen (3) rotation connection, is located at institute at the first rotor (34) being fixed on the first rotor (32) State the wave screen drum (35) of the first rotor (34) outside；It is provided on the fine screen pressurized screen (4) and turns with the fine screen pressurized screen (4) The second rotor (42) of dynamic connection, is located at second rotor at the second rotor (44) being fixed on second rotor (42) (44) fine screen screen cylinder (45) outside.

2. the pretreatment unit of a kind of waste paper pulp-making according to claim 1, it is characterized in that: the fine screen pressurized screen (4) Inside it is provided with the second driving mechanism (43) for driving the second rotor (42) rotation；Second rotor (44) is multiple solid Due to the second blade (441) of the second rotor (42) outer wall, second blade (441) along second rotor (42) to It is divided into multiple groups, second blade (441) is circumferentially uniformly distributed along second rotor (42).

3. the pretreatment unit of a kind of waste paper pulp-making according to claim 2, it is characterized in that: the fine screen pressurized screen (4) On be provided with thick slurry entrance (46) and the slag-drip opening being connected between second rotor (44) and the fine screen screen cylinder (45) (47), the good slurry being connected between the inner wall and the fine screen screen cylinder (45) of the fine screen pressurized screen (4) exports (48), in every group Spacing between second blade (441) is gradually increased along the thick slurry entrance (46) to the slag-drip opening (47) direction.

4. the pretreatment unit of a kind of waste paper pulp-making according to claim 1, it is characterized in that: the primary dcreening operation pressurized screen (3) It is inside provided with the first driving mechanism (33) for driving the first rotor (32) to rotate, first rotor (34) is multiple circumferential directions It is fixed on first blade (341) of the first rotor (32) outer wall, first blade (341) is along the first rotor (32) Axially inclined setting, avoid secondary stock from being wound on first blade (341).

5. the pretreatment unit of a kind of waste paper pulp-making according to claim 1, it is characterized in that: the primary dcreening operation pressurized screen (3) On be provided with high-pressure hydraulic pump (395), primary dcreening operation pressurized screen (3) inner wall is fixed with multiple high-pressure nozzles (394), the high pressure spray Head (394) is connected to the high-pressure hydraulic pump (395).

6. the pretreatment unit of a kind of waste paper pulp-making according to claim 5, it is characterized in that: the high-pressure nozzle (394) For the high-pressure nozzle along high-pressure nozzle (394) described in second rotor (42) axially arranged side by side multiple groups, every group (394) it is circumferentially uniformly distributed along the primary dcreening operation pressurized screen (3) with the fine screen pressurized screen (4).

7. the pretreatment unit of a kind of waste paper pulp-making according to claim 6, it is characterized in that: the primary dcreening operation pressurized screen (3) On be provided with the pulp inlet (36) being connected between first rotor (34) and the wave screen drum (35) and weight slag outlet (37), the thick slurry outlet (38) between the inner wall and the wave screen drum (35) of the primary dcreening operation pressurized screen (3), every group of institute are connected to High-pressure nozzle (394) is stated to be gradually reduced along the pulp inlet (36) to the width between described heavy slag outlet (37) direction.

8. the pretreatment unit of a kind of waste paper pulp-making according to claim 7, it is characterized in that: in the wave screen drum (35) Circumferentially arranged to have several deflectors (391), the rotation direction of the deflector (391) and first rotor (34) is tangent, The deflector (391) is circumferentially uniformly distributed along the wave screen drum (35).

9. a kind of pretreatment unit of waste paper pulp-making according to claim 8, it is characterized in that: the deflector (391) with The junction of the wave screen drum (35) is provided with guide surface (392), and secondary stock is guided to described along the guide surface (392) Deflector (391).

10. the pretreatment unit of a kind of waste paper pulp-making according to claim 9, it is characterized in that: the deflector (391) edge Length direction is provided with multiple apertures (393).