CN115254311A - Pulp grinding equipment for producing flushable non-woven material - Google Patents

Abstract

The invention belongs to the technical field of paper pulp grinding equipment, and particularly relates to paper pulp grinding equipment for producing a flushable non-woven material. According to the invention, the shell is provided with the upper feeding port, the bottom motor, the motor shaft, the middle rotary grinding disc, the annular fixed grinding disc, the supporting nut unit, the rotatable annular cylinder unit and the discharging pipe, so that the rotatable annular cylinder unit can rotate to stir slurry and can descend to expose impurities, the slurry can be stirred before falling, fibers are more uniformly distributed on the net curtain during wet-laid, and the impurities and long fibers intercepted in the grinding process can be conveniently removed.

Description

Pulp grinding equipment for producing flushable non-woven material

Technical Field

The invention belongs to the technical field of paper pulp grinding equipment, and particularly relates to paper pulp grinding equipment for producing a flushable non-woven material.

Background

Compared with cloth, the flushable non-woven material is more like paper, including toilet paper, kitchen paper, dry/wet tissue and the like which are used in daily life, can be directly thrown into a closestool, can be easily flushable in a sewer, and is not easy to block the sewer.

In the fiber raw material of the flushable non-woven material, the paper pulp fiber reaches more than 70 percent, and the rest is a small part of wood pulp fiber, cotton fiber, lyocell fiber and the like. The general production steps of the flushable nonwoven material are wet-laid and then hydroentangled, wherein the production steps comprise: the fiber and water are firstly beaten in a pulp grinding device according to a certain proportion to form pulp, then the pulp is uniformly coated on a net curtain, a fiber net is formed after the excessive water is removed, and then the fiber and water are spunlaced and reinforced, thus the material is in a general shape.

Thus, in the wet-laid step, the fibers need to be distributed uniformly over the web, otherwise the material is not uniform in thickness, is less prone to being washed out in the thicker portions, and is prone to breaking in the thinner portions during normal use. To ensure this effect, two main aspects are adopted: firstly, fibers are uniformly distributed in the slurry at the beginning, so that the use of the fiber settling slurry which does not flow for a long time is avoided as much as possible; second, after the slurry is coated on the wire, a suitable scraping action can be performed.

Chinese utility model patent with patent publication No. CN213203622U and publication No. 2021.05.14 discloses a pulp grinder, which comprises a shell, wherein a feed hopper is arranged at the top of the shell, a grinding cavity and an equipment cavity are arranged in the shell, and the grinding cavity is positioned above the equipment cavity; the grinding mechanism is arranged in the grinding cavity, the driving mechanism is arranged in the equipment cavity, an inclined baffle is arranged between the grinding cavity and the equipment cavity, and the inclined baffle is fixedly connected with the shell.

The utility model discloses a pulp grinder in patent, its principle is roughly: the first pulp grinding operation is carried out between the first pulp grinding blade and the second pulp grinding blade, then the filter screen intercepts overlarge fibers, then the fixed grinding disc and the movable grinding disc carry out the second pulp grinding operation, then the pulp outlet hole carries out finer filtering operation, and finally the blanking is waited at the discharge outlet.

However, the pulp grinder has at least the following 2 disadvantages in daily use.

Firstly, when the pulp grinder is started after the belt material is idle for a period of time, the pulp at the discharge port has a problem of fiber sedimentation to a relatively large degree, at the moment, if the wet-laid step is directly carried out, the fiber quantity on a large section of the net curtain is insufficient, and the fiber quantity on a subsequent section of the net curtain is excessive, so that the final thickness of the flushable non-woven material is different.

And more seriously, the stirring operation of the portion of the slurry cannot be performed even if the motor thereof is turned on at this time, which is troublesome.

Secondly, the larger fibers or other impurities intercepted on the filter screen and the pulp outlet hole are inconvenient to remove, after all, the grinding cylinder is fixedly connected in the shell, and no proper impurity taking opening exists.

Therefore, there is a need for a pulp grinding apparatus with improved structure, which can stir the pulp before discharging and intercept impurities for easy removal, for producing the aforementioned dispersible nonwoven material.

Disclosure of Invention

The invention provides pulp grinding equipment for producing a flushable non-woven material, which can lead a rotatable annular cylinder unit to not only rotatably stir pulp but also expose impurities after descending by arranging an upper feeding port, a bottom motor, a motor shaft, a middle rotating grinding disc, an annular fixed grinding disc, a supporting nut unit, a rotatable annular cylinder unit and a discharging pipe on a shell, thereby ensuring that the pulp can be stirred before falling, leading the fibers to be more uniformly distributed on a net curtain during wet-laying, and leading the impurities and long fibers intercepted in the grinding process to be conveniently removed.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a can break away paper pulp grinding device of non-woven materials production usefulness, the structure includes the shell, the upper feed inlet, the bottom motor, the motor shaft, the rotatory mill in middle part to and the fixed mill of annular, still including setting up support nut unit on the fixed mill lower surface of annular, with the motor shaft cup joints, and presses rotatable annular barrel unit on the support nut unit, and sets up discharging pipe on the shell bottom plate.

The further preferred technical scheme is as follows: the rotatable annular cylinder unit comprises an annular cylinder body, a protruding ring, an arc-shaped opening, a cylinder stirring column and a discharging pipe, wherein the annular cylinder body is inserted into the motor shaft through a circular pore passage in the middle of the rotatable annular cylinder body, the protruding ring is arranged on the outer annular surface of the annular cylinder body, the arc-shaped opening is arranged on the protruding ring and is inserted into the supporting nut unit, the cylinder stirring column is arranged on the annular surface of the inner side of the annular cylinder body, and the discharging pipe is arranged on a bottom plate of the annular cylinder body and is used for discharging paper pulp to the discharging pipe.

The further preferred technical scheme is as follows: the quantity of discharging pipe is 2, when the supporting nut unit is in remove to end department in the arc opening, the unloading pipe is vertical to be aimed at the discharging pipe, be equipped with the automatically controlled valve on the unloading pipe.

The further preferred technical scheme is as follows: the rotatable annular cylinder unit further comprises an annular filter screen arranged on the annular surface on the inner side of the annular cylinder.

The further preferred technical scheme is as follows: the rotatable annular cylinder unit further comprises teeth arranged on the annular surface of the protruding circular ring, and a driving gear meshed with the teeth is further arranged on the lower surface of the annular fixed grinding disc.

The further preferred technical scheme is as follows: the shell is positioned below the annular fixed grinding disc and is provided with an upper driving rack port, an upper impurity removing port and a lower valve wire guide port.

The further preferred technical scheme is as follows: the support nut unit is in including setting up intraoral vertical stud of arc, the setting is in limiting plate on the terminal surface under the vertical stud, and set up on the vertical stud, and support the protruding ring, and be used for exposing the lifting nut of ring shape filter screen.

The further preferred technical scheme is as follows: and the lower surface of the middle rotary grinding disc is also provided with a rotary column unit which is used for stirring in the circular cylinder body and gathering impurities on the circular filter screen.

The further preferred technical scheme is as follows: the rotary column unit comprises a vertical shaft arranged on the lower surface of the middle rotary grinding disc and positioned on the inner side of the circular ring-shaped filter screen, and a plurality of transverse columns arranged on the upper side and the lower side of the circular ring-shaped filter screen respectively and arranged on the vertical shaft.

The further preferred technical scheme is as follows: the rotary column unit further comprises an inclined guide ring arranged on the lower surface of the middle rotary grinding disc and with an annular lower end edge expanding outwards, and an inward extending plate arranged on the lower surface or the inner side surface of the inclined guide ring and used for installing the vertical shaft.

The present invention has the following advantages.

First, rotatable annular barrel unit can not rotate when grinding, continuous ejection of compact, when the ejection of compact begins again after grinding equipment shuts down for a long time, can be through self rotation action for the thick liquids that originally the fibre subsided are stirred once more, and during final wet laying, the fibre on the net curtain can be with evenly distributed, and final nonwoven that can break up's thickness is more even relatively.

Secondly, the rotatable annular cylinder unit has the function of intercepting impurities and long fibers, and can descend properly on the supporting nut unit, so that the impurities, the long fibers and the like are exposed easily, and centralized removal is facilitated.

Thirdly, the rotary mode of the rotatable annular cylinder unit is reciprocating rotation, and the end point of the reciprocating rotation, namely the discharging pipe is aligned with the discharging pipe, so that two discharging positions only can be ensured, and the mesh curtain can be uniformly coated with slurry.

Fourthly, the rotating column unit can be used for stirring slurry during grinding, and can also be used for carrying out impurity scraping operation on the circular ring-shaped filter screen, so that the fine fibers intercepted by errors can fall down again, the impurities and long fibers can be gathered together, and the subsequent clearing operation is quicker.

Fifthly, the rotary column unit also comprises an inclined flow guide ring, so that gaps between the circular ring-shaped filter screen and the vertical shaft, which are likely to directly leak slurry, can be covered, and all slurry is guaranteed to pass through the circular ring-shaped filter screen.

Sixth, the spin column unit and the rotatable annular cylinder unit can be rotated together and rotated in opposite directions when the slurry falls, further rapidly and uniformly stirring the fibers in the slurry.

Drawings

FIG. 1 is a schematic view of the present invention.

FIG. 2 is a schematic view showing the positions of the upper driving rack port, the upper impurity removing port and the lower valve wire guiding port in the present invention.

Fig. 3 is a schematic view of the positional structure of the rotatable annular cylinder unit in the present invention.

Fig. 4 is a schematic structural diagram of the position of the arc-shaped opening in the top view.

Fig. 5 is a schematic view of a position structure of the support nut unit according to the present invention.

FIG. 6 is a schematic diagram of a half-section of a circular ring-shaped filter screen position structure according to the present invention, in which a blanking pipe is installed at a circular hole position.

Fig. 7 is a schematic view of a position structure of the spin column unit according to the present invention.

FIG. 8 shows the position of 2 tapping pipes according to the invention.

In the drawings, the reference numerals have the following meanings: the grinding machine comprises a shell a, an upper feed inlet b, a bottom motor c, a motor shaft d, a middle rotary grinding disc e, an annular fixed grinding disc f, a grinding disc crack g, a co-circle auxiliary line h, a net curtain k and a circle center connecting line n.

The device comprises a supporting nut unit 1, a rotatable annular barrel unit 2, a discharge pipe 3, an annular barrel 201, a protruding ring 202, an arc-shaped opening 203, a barrel stirring column 204, a discharging pipe 205, an annular filter screen 206, teeth 207, a driving gear 4, an upper driving rack port 5, an upper impurity removing port 6, a lower valve wire guiding port 7, a vertical stud 101, a limiting plate 102, a lifting nut 103, a rotating column unit 8, a vertical shaft 801, a transverse column 802, an inclined flow guide ring 803 and an inward extending plate 804.

Detailed Description

The following description is merely exemplary of the present invention and is not intended to limit the scope of the invention.

As shown in the attached fig. 1-8, a pulp grinding device for producing flushable non-woven materials structurally comprises a shell a, an upper feeding port b, a bottom motor c, a motor shaft d, a middle rotating millstone e and an annular fixed millstone f, and is characterized in that: the grinding wheel is characterized by further comprising a supporting nut unit 1 arranged on the lower surface of the annular fixed grinding disc f, a rotatable annular cylinder unit 2 sleeved with the motor shaft d and pressed on the supporting nut unit 1, and a discharging pipe 3 arranged on the bottom plate of the shell a.

In this embodiment, the bottom motor c, the motor shaft d, the middle rotating millstone e and the annular fixed millstone f ensure basic pulp grinding and long fiber grinding effects.

Finally, the pulp can directly fall down after the intercepting operation of impurities and long fibers is carried out at the rotatable annular cylinder unit 2, the subsequent wet-laid operation is carried out, and the trouble is that if the pulp grinding equipment is started after long-term shutdown, the internal pulp has large-degree fiber precipitation or fiber floating and other non-uniformity phenomena, and at the moment, if the wet-laid operation is directly carried out, the non-woven material obtained on a large section of net curtain has unqualified thickness, namely too few or too many fibers, which is the main purpose of introducing the rotatable annular cylinder unit 2.

When the bottom motor c is not in motion, the rotatable annular cylinder unit 2 can rotate by itself to stir the temporarily stored slurry to ensure that the fibers are uniformly distributed, then the rotatable annular cylinder unit 2 is opened to the discharging position and aligned with the discharging pipe 3, so that the wet-laid effect of fiber coating and uniform distribution can be ensured.

The rotatable annular cylinder unit 2 comprises an annular cylinder 201 with a circular hole in the middle part inserted into the motor shaft d, a protruding ring 202 arranged on the outer annular surface of the annular cylinder 201, an arc-shaped opening 203 arranged on the protruding ring 202 and inserted into the support nut unit 1, a cylinder stirring column 204 arranged on the inner annular surface of the annular cylinder 201, and a discharge pipe 205 arranged on the bottom plate of the annular cylinder 201 and used for discharging pulp towards the discharge pipe 3.

In this embodiment, the structure of the circular cylinder 201 includes a circular bottom plate, and an outer circular wall and an inner circular wall, the circular bottom plate and the inner circular wall are arranged inside and used for passing through the motor shaft d, the protruding circular ring 202 is arranged on the outer annular surface of the outer circular wall, the cylinder stirring column 204 is arranged on the inner annular surface of the outer circular wall, and the discharging pipe 205 is arranged on the circular bottom plate.

In addition, the annular length of the arc-shaped opening 203 is the maximum rotation range of the annular cylinder 201, so that the annular cylinder 201 is rotated in a fast, reciprocating and small-angle manner, so that slurry in the annular cylinder 201 can be uniformly stirred after being left idle for a long time, the fibers are uniformly distributed, and the fibers are prevented from settling or floating.

The number of the discharging pipes 3 is 2, when the supporting nut unit 1 moves to the end in the arc-shaped opening 203, the discharging pipe 3 is vertically aligned with the discharging pipe 205, and an electric control valve is arranged on the discharging pipe 205.

In this embodiment, the supporting nut unit 1 touches one end of the arc-shaped opening 203, that is, the feeding pipe 205 is vertically aligned with the first discharging pipe 3, whereas, the supporting nut unit 1 touches the other end of the arc-shaped opening 203, that is, the feeding pipe 205 is vertically aligned with the second discharging pipe 3, and only two discharging positions exist for the slurry that has been uniformly stirred.

The electric control valve is closed when the circular cylinder 201 rotates in a reciprocating manner, and is opened when the discharging pipe 205 is aligned with the discharging pipe 3 and the circular cylinder 201 is not moved.

Furthermore, the circle center connecting line, namely the circle center connecting line n, of the two discharging pipes 3 is located on the central line of the net curtain k, so that slurry can fall in the center of the net curtain k no matter which position the slurry is discharged to fall, the subsequent uniform slurry coating operation is more efficient, and the loss caused by the large amount of slurry falling is avoided.

The rotatable annular cylinder unit 2 further comprises an annular filter screen 206 arranged on the inner annular surface of the annular cylinder 201.

In this embodiment, the circular ring-shaped filter screen 206 may be connected to the outer annular surface of the inner circular wall of the circular ring-shaped cylinder 201, i.e. completely seal the circular ring-shaped cylinder 201, and a sufficient filtering effect may be obtained after the pulp is ground.

Moreover, when the circular cylinder 201 is at a relatively high position on the supporting nut unit 1, the grinding operation is normally performed, and the circular cylinder 201 and the annular fixed grinding disc f are relatively close to each other, so that the slurry is prevented from splashing. When the height of the circular cylinder 201 is adjusted downwards, the pulp grinding equipment stops grinding, and impurities and long fibers intercepted on the circular filter screen 206 can be conveniently taken out.

The rotatable annular cylinder unit 2 further comprises teeth 207 arranged on the annular surface of the protruding ring 202, and a driving gear 4 meshed with the teeth 207 is further arranged on the lower surface of the annular fixed grinding disc f.

In this embodiment, the driving gear 4 is externally connected to a driving motor, so as to finally ensure that the circular cylinder 201 can reciprocate and rotate at a small angle. In addition, the vertical length dimension of the driving gear 4 is greater than the vertical length dimension of the teeth 207, so that the teeth 207 still engage the driving gear 4 when the height of the circular cylinder 201 is adjusted properly.

The shell a is positioned below the annular fixed grinding disc f and is provided with an upper driving rack port 5, an upper impurity removing port 6 and a lower valve wire guide port 7.

In this embodiment, the position of going up drive rack mouth 5 is close to drive gear 4, go up miscellaneous mouthful 6 and can set up a plurality ofly, its height with support nut unit 1 is close to mutually, and lower valve wire mouth 7 is then used for the installation the wire of electric control valve guarantees when ring shape barrel 201 is rotatory reciprocating, the wire of electric control valve can not be dragged by widelys can.

The supporting nut unit 1 comprises a vertical stud 101 arranged in the arc-shaped opening 203, a limiting plate 102 arranged on the lower end face of the vertical stud 101, and a lifting nut 103 arranged on the vertical stud 101, supporting the protruding ring 202 and exposing the ring-shaped filter screen 206.

In this embodiment, the maximum exposure of the circular ring filter screen 206, i.e. the maximum operation space for removing impurities, is that the lifting nut 103 is screwed down to the bottom and touches the limiting plate 102.

In addition, the positions and the number of the supporting nut units 1 can be 2-5 corresponding to the arc-shaped opening 203.

Finally, the length and width of the cross section of the lifting nut 103 are larger than the width of the arc-shaped opening 203, and balls are arranged on the upper surface of the lifting nut 103, so that the reciprocating rotation action of the circular cylinder 201 can be more labor-saving.

And the lower surface of the middle rotary grinding disc e is also provided with a rotary column unit 8 which is used for stirring in the circular cylinder 201 and gathering impurities on the circular filter screen 206.

In this embodiment, the pulp mill apparatus may be stationary during the continuous milling, discharge, wet-laid operation, with the rotatable annular cylinder unit 2 being held stationary by the drive motor at the drive gear 4. However, if a slurry stirring operation is required to further disperse the small agglomerated fibers in the slurry, the rotary column unit 8 may be rotated together with the middle rotary abrasive disk e.

The spin column unit 8 is including setting up on the rotatory mill e lower surface in middle part, and be located the inboard vertical axis 801 of ring shape filter screen 206, and set up on the vertical axis 801, and be located respectively the horizontal post 802 of a plurality of both sides position department about the ring shape filter screen 206.

In this embodiment, the uppermost transverse column 802 is located on the upper surface of the circular ring filter 206 at the highest position, and the circular ring filter 206 cannot completely cover the entire circular ring cylinder 201 at this time, which must leave an inner annular region for the rotation path of the vertical shaft 801.

In addition, the height and the number of the transverse columns 802 are not particularly limited, as long as the transverse columns 802 do not touch the cylinder stirring column 204 when the circular cylinder 201 is stationary or lifted.

The rotating column unit 8 further comprises an inclined guide ring 803 which is arranged on the lower surface of the middle rotating grinding disc e and the lower end edge of which is annular and is outwards expanded, and an inwards extending plate 804 which is arranged on the lower surface or the inner side surface of the inclined guide ring 803 and is used for installing the vertical shaft 801.

In this embodiment, since the lower end of the disc gap g is inclined inward, part of the slurry may fall directly at the gap position of the circular ring filter 206 and the vertical shaft 801 without being intercepted by the circular ring filter 206, which is harmful and may reduce the quality of the slurry in wet-laying.

Therefore, the inclined diversion ring 803 with the lower end inclined outwards is arranged, the whole annular inclined surface of the inclined diversion ring "faces" the grinding disc crack g, and finally, the slurry is totally guided to the circular ring-shaped filter screen 206, and the original slurry stirring effect of the transverse column 802 is not influenced by the inwards extending plate 804.

Of course, the optimal position of the lower annular edge of the inclined deflector ring 803 is within a radial inner half range of the circular ring-shaped filter screen 206, so as to prevent the inclined deflector ring from excessively deflecting the slurry outwards, and even from splashing out of the upper edge of the circular ring-shaped cylinder 201.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications that fall within the scope of the claims of the present invention, which are protected by the patent statutes.

Claims (10)

1. The utility model provides a can break up pulp grinding device of non-woven materials production usefulness, the structure includes shell (a), upper feed inlet (b), bottom motor (c), motor shaft (d), middle part rotation mill dish (e) to and annular fixed mill dish (f), its characterized in that: the grinding wheel is characterized by further comprising a supporting nut unit (1) arranged on the lower surface of the annular fixed grinding disc (f), a rotatable annular barrel unit (2) sleeved with the motor shaft (d) and pressed on the supporting nut unit (1), and a discharging pipe (3) arranged on a bottom plate of the shell (a).

2. A pulp mill apparatus for flushable nonwoven production as defined in claim 1, wherein: the rotatable annular cylinder unit (2) comprises an annular cylinder (201) with a middle circular hole inserted into the motor shaft (d), a protruding ring (202) arranged on the outer ring surface of the annular cylinder (201), an arc-shaped opening (203) arranged on the protruding ring (202) and inserted into the supporting nut unit (1), a cylinder stirring column (204) arranged on the inner ring surface of the annular cylinder (201), and a discharging pipe (205) arranged on a bottom plate of the annular cylinder (201) and used for discharging paper pulp to the discharging pipe (3).

3. A pulp mill apparatus for flushable nonwoven production as defined in claim 2, wherein: the number of discharging pipes (3) is 2, support nut unit (1) is in when removing to end department in arc opening (203), unloading pipe (205) vertical alignment discharging pipe (3), be equipped with the automatically controlled valve on unloading pipe (205).

4. A pulp mill apparatus for flushable nonwoven production as defined in claim 2, wherein: the rotatable annular cylinder unit (2) further comprises an annular filter screen (206) arranged on the annular surface on the inner side of the annular cylinder (201).

5. A pulp mill apparatus for flushable nonwoven production as defined in claim 3, wherein: the rotatable annular cylinder unit (2) further comprises teeth (207) arranged on the annular surface of the protruding circular ring (202), and a driving gear (4) meshed with the teeth (207) is further arranged on the lower surface of the annular fixed grinding disc (f).

6. The pulp mill apparatus for flushable nonwoven production of claim 5, wherein: the shell (a) is positioned below the annular fixed grinding disc (f) and is provided with an upper driving rack port (5), an upper impurity removing port (6) and a lower valve wire guide port (7).

7. The pulp mill apparatus for flushable nonwoven production of claim 4, wherein: the support nut unit (1) comprises a vertical stud (101) arranged in the arc-shaped opening (203), a limiting plate (102) arranged on the lower end face of the vertical stud (101), and a lifting nut (103) arranged on the vertical stud (101) and used for exposing the protruding ring (202) and exposing the circular ring-shaped filter screen (206).

8. The pulp mill apparatus for flushable nonwoven production of claim 4, wherein: the lower surface of the middle rotary grinding disc (e) is also provided with a rotary column unit (8) which is used for stirring in the circular cylinder body (201) and gathering impurities on the circular filter screen (206).

9. The pulp mill apparatus for flushable nonwoven production of claim 8, wherein: the rotary column unit (8) is arranged on the lower surface of the middle rotary grinding disc (e) and is located on a vertical shaft (801) on the inner side of the circular ring-shaped filter screen (206), and is arranged on the vertical shaft (801) and is respectively located on a plurality of transverse columns (802) at the positions of the upper side and the lower side of the circular ring-shaped filter screen (206).

10. A pulp mill apparatus for flushable nonwoven production as claimed in claim 9, wherein: the rotary column unit (8) further comprises an inclined guide ring (803) which is arranged on the lower surface of the middle rotary grinding disc (e) and the lower end edge of the ring shape is outwards expanded, and an inward extending plate (804) which is arranged on the lower surface or the inner side surface of the inclined guide ring (803) and used for installing the vertical shaft (801).

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