CN111206458B - Equipment for producing paper suction pipe and production method thereof - Google Patents
Equipment for producing paper suction pipe and production method thereof Download PDFInfo
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- CN111206458B CN111206458B CN202010020097.8A CN202010020097A CN111206458B CN 111206458 B CN111206458 B CN 111206458B CN 202010020097 A CN202010020097 A CN 202010020097A CN 111206458 B CN111206458 B CN 111206458B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
- D21J3/04—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of tubes
Abstract
The present invention provides an apparatus for producing a paper straw, comprising: a liquid storage tank; the suction pipe adsorption forming device comprises at least one pair of forming rollers which are externally tangent and a driving device connected with the forming rollers, the rollers are arranged in the grooves, grooves are formed in the surfaces of the forming rollers along the circumferential direction of the forming rollers, the grooves in the pair of forming rollers are symmetrically arranged, a plurality of negative pressure generating holes are formed in the grooves, and the negative pressure generating holes are communicated with the negative pressure generating device; the traction device is sequentially arranged at the downstream of the suction pipe adsorption forming device; and a method for producing the paper drinking straw by using the device. The straw prepared by the invention is resistant to soaking, can not be softened when soaked in water for 2 hours, is easy to degrade, and can not cause harm to the environment after being lost; in addition, any pigment or adhesive is not added in the process of manufacturing the straw, so that the pigment or the adhesive is not released in use, and the harm to a human body is avoided.
Description
Technical Field
The invention relates to the technical field of straw processing and production, in particular to equipment for producing a paper straw and a production method thereof.
Background
With the increasing living standard and the pace of life, various liquid foods such as milk and beverages are increasing, and the foods are generally used as straws. The straw is popular with people because it does not contact with the cup, is sanitary, convenient to use and low in price. Most of straws on the market at present are plastic straws which are low in price, but the straws are not easy to degrade and are discarded, so that huge pressure is caused on the environment. Accordingly, people are turning to the development of various paper straws to reduce environmental pollution.
The conventional paper suction pipe on the market is formed by spirally bonding and winding a plurality of layers of hard paper strips, and when the paper suction pipe is soaked in water, the bonding agent in the paper suction pipe is easy to lose efficacy, so that the paper suction pipe is easy to be soaked, softened and rotten; in addition, the hard paper strips are industrial paper and are not food paper, so the hard paper strips are used for making the straw and are unhealthy for human bodies. Some researchers have made drinking straws with potato starch, which are not harmful to the human body and are easily degradable, but are not resistant to soaking, and are generally soaked in water within 15 minutes. Therefore, there is a need to develop a straw that is both bubble resistant and healthy and environmentally friendly.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide an apparatus for producing paper drinking straws to solve the problems of the prior art that drinking straws are not environmentally friendly and are not resistant to bubbles.
In order to achieve the above object, the present invention is achieved by the following technical means:
an apparatus for producing paper drinking straws comprising:
a reservoir for holding a slurry containing cellulosic fibers;
the suction pipe adsorption forming device comprises at least one pair of forming rollers which are externally tangent and a driving device connected with the forming rollers, the forming rollers are arranged in the liquid storage tank, grooves are formed in the surfaces of the forming rollers along the circumferential direction of the forming rollers, the grooves on the pair of forming rollers which are externally tangent are symmetrically arranged, a plurality of negative pressure generating holes are formed in the grooves, and the negative pressure generating holes are communicated with the negative pressure generating device; and
and the traction device is arranged at the downstream of the straw adsorption forming device and is used for drawing the paper straws formed at the straw adsorption forming device to be collected.
Further, the drawing device comprises a plurality of pairs of drawing rollers which are arranged at the downstream of the suction pipe adsorption forming device in sequence, and a space is reserved between each pair of drawing rollers.
Further, a structure for heating the paper suction pipe is arranged on the traction roller.
Furthermore, the traction roller is a hollow roller body, and hot oil or hot steam is arranged in the traction roller.
Further, the spacing between each pair of the pulling rolls gradually decreases with distance from the forming roll.
Further, a spacing between a pair of the pull rolls closest to the forming roll is no greater than twice the groove depth.
Furthermore, a guide column is arranged at the bottom of the liquid storage tank, one end of the guide column is fixed at the bottom of the liquid storage tank, and the other end of the guide column sequentially extends out of an area enclosed by the grooves at the tangent points of the pair of externally-tangent forming rollers and the distance between the plurality of pairs of traction rollers.
Further, the guide post comprises a straight line section and a bent section, wherein the straight line section is arranged at the tangent point of the liquid storage tank and the pair of forming rollers which are circumscribed mutually, and the bent section is arranged between the plurality of pairs of drawing rollers.
Further, the apparatus for producing paper drinking straws further comprises at least one pair of straw recovery rollers disposed downstream of the drawing device, each pair of straw recovery rollers also having a spacing therebetween.
Further, the surface of the groove of the forming roller is provided with a fiber filter screen.
Further, the cross section of the groove is in one of a semicircular shape, a "]" shape or a V shape.
Another object of the present invention is to provide a method for producing an apparatus for producing a paper drinking straw, comprising the steps of:
s1: preparing a slurry containing cellulose fibers, pouring the slurry into the liquid storage tank, and enabling the liquid level height of the slurry to be as high as the tangent point of the at least one pair of forming rollers which are circumscribed with each other;
s2: starting the suction pipe adsorption forming device to enable the pair of forming rollers which are externally tangent to each other to oppositely rotate, and simultaneously starting the negative pressure generating device, under the action of negative pressure, cellulose fibers in the pulp are adsorbed on the outer surfaces of the grooves of the forming rollers which continuously rotate and are extruded and spliced into a paper suction pipe by the pair of forming rollers which are externally tangent to each other at the tangent point;
s3: the formed paper suction pipe is conveyed to the traction device by a pair of the forming rollers which are mutually circumscribed, dried in the process that the traction device is dragged to move forwards, and finally collected.
Further, when the paper suction pipe is pulled by the pulling device, hot oil or hot steam is introduced into the pulling device so as to heat and dry the paper suction pipe.
Further, the drawing device also radially pressurizes the paper suction pipe while the paper suction pipe passes through the drawing device.
Further, the rotating speed of the forming roller is 30-50 r/min.
Compared with the prior art, the invention has at least the following beneficial effects: the equipment disclosed by the invention is simple in structure and convenient to operate, and the paper straw produced by the equipment is low in price, is resistant to soaking, cannot be softened after being soaked in water for 2 hours, is easy to degrade, and cannot cause harm to the environment after being lost; in addition, no pigment or adhesive is added in the process of manufacturing the straw, so that the pigment or the adhesive is not released when the straw is used, and the harm to a human body is avoided; in addition, the straw is convenient to obtain raw materials, the raw materials are sugarcane or waste wood, waste materials are changed into valuable materials, and the requirements of energy conservation and environmental protection are met.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
FIG. 1 is a schematic perspective view of an apparatus for producing a paper straw according to an embodiment of the present invention;
FIG. 2 is a front view of an apparatus for producing paper drinking straws according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view of a forming roller according to an embodiment of the present invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides an apparatus for producing a paper straw, which mainly comprises a liquid storage tank 1, a straw suction forming device and a traction device arranged at the downstream of the straw suction forming device. The liquid storage tank 1 is arranged on the ground through a support frame 4, and during operation, the liquid storage tank 1 is filled with slurry containing cellulose fibers. The bottom of reservoir 1 is provided with guide post 5, and the one end of guide post 5 is fixed in the bottom of reservoir 1, and the other end of guide post 5 upwards extends. The straw suction forming device includes at least a pair of forming rollers 20 which are circumscribed and symmetrically disposed, and a motor 22 connected to the forming rollers, and in the present embodiment, a description will be given by taking a pair of forming rollers 20 which are circumscribed and symmetrically disposed as an example. The shafts 21 of the forming rollers 20 are arranged on the side wall of the liquid storage tank 1 in parallel and at the same height so as to fix the forming rollers 20 in the liquid storage tank 1, the shafts 21 of the forming rollers 20 extend out of the side wall of the liquid storage tank 1, a gear is sleeved on the end side of each shaft 21, and the gears on the shafts 21 of the forming rollers 20 are meshed with each other. The motor 22 is fixed on the support frame 4, a gear is also sleeved on an output shaft of the motor 22, and the gear on the output shaft of the motor 22 is meshed with the gear on the shaft 21 of one of the forming rollers 20, so that the motor 22 works to drive the pair of forming rollers 20 to rotate oppositely. Of course, the number and the arrangement mode of the forming rollers are not limited to those of the embodiment, for example, a plurality of forming rollers 20 which are circumscribed with each other in pairs may be arranged in the liquid storage tank, and the shafts 21 of the forming rollers 20 which are circumscribed with each other in pairs are arranged on the side wall of the liquid storage tank 1 in parallel and at the same height; or a plurality of pairs of mutually circumscribed forming rollers 20 are arranged in the liquid storage tank 1 along the length direction of the liquid storage tank, and the shafts 21 of the plurality of pairs of mutually circumscribed forming rollers 20 are arranged on the side wall of the liquid storage tank 1 in parallel and at the same height along the length direction of the liquid storage tank 1; or in other realizable forms.
The forming roller 20 has a groove 200 formed on its surface along its circumference, and the cross section of the groove 200 may be one of a semicircular shape, a "]" shape or a "V" shape, or may be other shapes that are convenient to form, wherein a semicircular shape is the most preferable. In the present embodiment, referring to fig. 3, the cross section of the groove 200 is illustrated as a semicircle. The two grooves 200 of the pair of forming rollers 20 are symmetrically arranged at the tangent point so that the two grooves 200 at the tangent point enclose a circle in the cross-sectional direction thereof, and the other end of the guide post 5 protrudes from the circular area. Each forming roller 20 is provided with a cavity (not shown), wherein the cavity is further connected with a vacuum pump (not shown); the grooves 200 of each forming roller 20 are provided with a plurality of negative pressure generating holes (not shown), which are communicated with the cavities. In addition, a fiber filtering net (not shown) is disposed on the outer surface of the groove 200 of each forming roller 20, when the vacuum pump is operated, the negative pressure generated by the vacuum pump absorbs the slurry into the groove 200 through the negative pressure generating holes, and the fiber filtering net on the surface of the groove 200 intercepts the cellulose fibers in the slurry. The intercepted cellulose fibers are extruded and spliced by a pair of forming rollers 20 which are mutually circumscribed at the tangent point through the rotation of the forming rollers 20 to form a hollow cylindrical paper suction pipe.
The drawing device comprises a plurality of pairs of drawing rollers 3 which are arranged in sequence, wherein a distance is formed between each pair of drawing rollers 3, the distance is gradually reduced along with the distance of each pair of drawing rollers 3 from the forming roller 20, and the distance between the pair of drawing rollers closest to the forming roller 20 is not more than twice the depth of the groove 200. The other end of the guide post 5 extending from the groove 200 of the pair of forming rollers 20 which are circumscribed mutually passes through the space between each pair of drawing rollers 3 in sequence, and the arrangement of the guide post 5 can prevent the paper suction pipe from being extruded to generate crease in the process of drawing and conveying by the drawing rollers 3, and once the crease is generated, the crease of the paper suction pipe is easy to break after drying. The outer diameter of the guide post 5 is not larger than the inner diameter of the paper suction pipe. In order to prevent the height of the device from being too high and facilitate the collection of the paper straws, the guide post 5 comprises a straight line section 50 arranged between the bottom of the liquid storage tank 1 and the tangent point of the pair of forming rollers 20 which are circumscribed with each other and a bending section 51 arranged between the plurality of pairs of drawing rollers 3, and the arrangement of the bending section 51 can change the travelling track of the paper straws, so that the travelling track of the paper straws is changed from upward travelling to horizontal travelling or downward travelling. The traction roller 3 is a hollow roller body, and hot oil or hot steam is introduced into the traction roller to heat and dry the paper suction pipe. Of course, other traction devices of similar construction and function are possible. At least one pair of straw recovery rollers 6 are arranged at the downstream of the plurality of pairs of traction rollers 3, the straw recovery rollers 6 are fixed above the support frame 4 through a support 7, and the dried paper straws are finally recovered through the transportation of the straw recovery rollers 6. In order to prevent the dried paper suction pipe from being pressed and deformed by the suction pipe recovery rollers 6 during the transportation, the other end of the guide post passing through the pair of drawing rollers 3 also protrudes from the space between each pair of suction pipe recovery rollers 6.
The production method of the present invention will be described below in conjunction with the above-described apparatus for producing paper drinking straws. The invention provides a production method for producing a paper straw by using the equipment for producing the paper straw, which comprises the following specific steps:
first, a slurry containing cellulose fibers is prepared by the following method: respectively hydrolyzing the wood pulp board and the sugarcane pulp board by a hydrapulper to obtain pulp with the mass concentration of 5%, defibering the pulp by a defibering machine after the hydrolysis is finished, continuously dispersing fibers, then carrying out split-silk axial pulping and pulp mixing, diluting the concentration of the fibers in the pulp to 0.5% (wt) during pulp mixing, and finally adjusting the pH value of the pulp to 7-8 by aluminum sulfate, thereby obtaining the sugarcane pulp and the wood pulp. Respectively taking 70-85% (wt) of the sugarcane pulp and 15-30% (wt) of the wood pulp, uniformly mixing, adding an AKD waterproof agent, wherein the addition amount of the AKD waterproof agent is 3-5% (wt) of the fibers, stirring for a few minutes to prepare pulp with a beating degree of 30, then sending the prepared pulp to a liquid storage tank 1 by a pulp sending machine, and stopping pulp sending when the liquid level height of the pulp in the liquid storage tank 1 is consistent with the height of a tangent point of at least one pair of forming rollers 20 which are externally tangent to each other; if the liquid level is reduced in the production process, the slurry needs to be supplemented in time.
Starting the motor 22, and driving the forming roller 20 in the liquid storage tank 1 to rotate by the rotation of the motor 22; at the same time, the vacuum pump is turned on, the slurry is sucked into the grooves 200 under the action of negative pressure, and due to the fiber filter net, the moisture in the slurry is pumped away and the fibers in the slurry are left on the fiber filter net. During the rotation of the forming rollers 20, the fibers on the fiber filter web are accumulated continuously, and when the fibers on the fiber filter web run to the tangent point of the forming rollers 20, the fibers are extruded and spliced by a pair of forming rollers 20 which are circumscribed with each other to form the hollow paper suction pipe. In order to prevent the paper suction pipe from being too thin and easy to be damaged, the rotating speed of the forming roller 20 is not too fast, preferably 30-50r/min, and the vacuum degree of the vacuum pump is preferably above 0.4 Mpa. The formed paper suction pipe is sleeved on the guide post 5 and is sent to the drawing roller 3 by the forming roller 20. Many pairs of carry over pinch rolls 3 still heat the stoving to the paper straw when carrying the paper straw, and the mode of drying is for leading to hot oil heating or letting in hot steam heating stoving in 3 carry over pinch rolls, and there can be other drying methods that can realize certainly also. In addition, the drawing rollers 3 are used for radially pressurizing the paper suction pipe, so that not only are the fibers on the pipe wall of the paper suction pipe more dense, but also the inner diameter and the outer diameter of the paper suction pipe are reduced. When the diameter of the paper straws is pressed to a design required size, the paper straws are collected at the straw recovery roller 6.
The straw prepared by the invention is resistant to soaking, can not be softened when soaked in water for 2 hours, is easy to degrade, and can not cause harm to the environment after being lost; in addition, any pigment or adhesive is not added in the process of manufacturing the straw, so that the pigment or the adhesive is not released in use, and the harm to a human body is avoided.
The apparatus for producing a paper drinking straw and the production method thereof according to the present invention are described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the apparatus for producing paper drinking straws and the method of producing the same of the present invention described above without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (13)
1. An apparatus for producing paper drinking straws, comprising:
a liquid storage tank for placing a slurry containing cellulose fibers;
the suction pipe adsorption forming device comprises at least one pair of forming rollers which are externally tangent and a driving device connected with the forming rollers, the forming rollers are arranged in the liquid storage tank, grooves are formed in the surfaces of the forming rollers along the circumferential direction of the forming rollers, the grooves on the pair of forming rollers which are externally tangent are symmetrically arranged, a plurality of negative pressure generating holes are formed in the grooves, and the negative pressure generating holes are communicated with the negative pressure generating device; and
the drawing device is arranged at the downstream of the suction pipe adsorption forming device and is used for drawing the paper suction pipe formed at the suction pipe adsorption forming device;
the drawing device comprises a plurality of pairs of drawing rollers which are sequentially arranged at the downstream of the suction pipe adsorption forming device, and a space is reserved between each pair of drawing rollers;
in addition, a guide column is arranged at the bottom of the liquid storage tank, one end of the guide column is fixed at the bottom of the liquid storage tank, and the other end of the guide column sequentially extends out of an area enclosed by the grooves at the cutting points of the pair of the forming rollers which are circumscribed with each other and the space between the plurality of pairs of the traction rollers.
2. The apparatus for producing paper drinking straws of claim 1, wherein the drawing roll is provided with a structure for heating the paper drinking straw.
3. The apparatus for producing paper drinking straw of claim 2 wherein the pulling roll is a hollow roll body having hot oil or steam disposed therein.
4. The apparatus for producing paper drinking straws of claim 1, wherein the spacing between each pair of said pulling rolls decreases with distance from said forming roll.
5. The apparatus for producing paper drinking straws of claim 1 or 4, wherein the distance between a pair of said drawing rolls closest to said forming roll is not more than twice the depth of said flutes.
6. The apparatus for producing paper drinking straws of claim 1, wherein the guide post comprises a straight segment disposed at the bottom of the reservoir at a tangent point of a pair of the forming rolls circumscribing each other and a curved segment disposed between a plurality of pairs of draw rolls.
7. The apparatus for producing paper drinking straws as claimed in claim 1, further comprising at least one pair of straw recovery rollers disposed downstream of the pulling device, each pair of straw recovery rollers also having a spacing therebetween.
8. The apparatus for producing a paper drinking straw as claimed in claim 1, wherein the grooved surface of the forming roll is provided with a fibrous filter web.
9. The apparatus for producing a paper drinking straw as claimed in claim 1, wherein the groove has one of a semicircular, "]" or "V" shape in cross section.
10. A method of producing an apparatus for producing a paper drinking straw as claimed in any one of claims 1 to 9, characterized by comprising the steps of:
s1: preparing a slurry containing cellulose fibers, pouring the slurry into the liquid storage tank, and enabling the liquid level height of the slurry to be as high as the tangent point of the at least one pair of forming rollers which are circumscribed with each other;
s2: starting the suction pipe adsorption forming device to enable the pair of forming rollers which are externally tangent to each other to oppositely rotate, and simultaneously starting the negative pressure generating device, so that cellulose fibers in the pulp are adsorbed on the outer surfaces of the grooves of the forming rollers which continuously rotate under the action of negative pressure and are extruded and spliced into the paper suction pipe by the pair of forming rollers which are externally tangent to each other at the tangent point;
s3: the formed paper suction pipe is conveyed to the drawing roller by a pair of mutually circumscribed forming rollers under the matching of the guide column, is dried in the process of drawing forward by the drawing roller and is finally collected.
11. The method for manufacturing the apparatus for manufacturing the paper straw as claimed in claim 10, wherein the paper straw is heated and dried by introducing hot oil or steam into the drawing means while being drawn by the drawing means.
12. The method for producing a paper drinking straw as claimed in claim 10, characterized in that the drawing device also radially pressurizes the paper drinking straw as it passes the drawing device.
13. The method for manufacturing a paper drinking straw as claimed in claim 10, wherein the forming roll is rotated at a speed of 30 to 50 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020097.8A CN111206458B (en) | 2020-01-09 | 2020-01-09 | Equipment for producing paper suction pipe and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020097.8A CN111206458B (en) | 2020-01-09 | 2020-01-09 | Equipment for producing paper suction pipe and production method thereof |
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| Publication Number | Publication Date |
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| CN111206458A CN111206458A (en) | 2020-05-29 |
| CN111206458B true CN111206458B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010020097.8A Active CN111206458B (en) | 2020-01-09 | 2020-01-09 | Equipment for producing paper suction pipe and production method thereof |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1364229A (en) * | 1919-10-17 | 1921-01-04 | Keyes Fibre Co | Sucker-head for pulp-molding machines |
| SE332116B (en) * | 1968-12-04 | 1971-01-25 | Platmanufaktur Ab | |
| CN1103451A (en) * | 1994-07-21 | 1995-06-07 | 赵春芳 | Paper tube and tub, method and equipment for mfg. same |
| EP1413676A4 (en) * | 2001-07-31 | 2007-11-14 | Kao Corp | Method of manufacturing hollow fiber formed body, hollow fiber formed body, and device for manufacturing the hollow fiber formed body |
| CN2492585Y (en) * | 2001-08-09 | 2002-05-22 | 彭贤正 | Moulding unit of paper pulp moulding machine |
| CN1208520C (en) * | 2003-05-27 | 2005-06-29 | 金培赶 | Disposable chopsticks |
| JP2005179885A (en) * | 2005-03-16 | 2005-07-07 | Noritake Co Ltd | Method for producing pulp mold hollow article |
| DE102008011584B4 (en) * | 2008-02-28 | 2013-01-03 | Waldemar Seidler | Device and method for producing at least one multi-cavity web-shaped press material, in particular a cardboard material |
| GB201421798D0 (en) * | 2014-12-08 | 2015-01-21 | Pulp Tech Co Ltd | An apparatus for forming moulded fibre urinal bottles |
| CN110219211A (en) * | 2019-06-26 | 2019-09-10 | 瑞安市祥意机械有限公司 | Flexible paper suction pipe molding equipment |
| CN110344288B (en) * | 2019-07-05 | 2020-10-20 | 汪家勤 | Ceramic fiber tube suction filtration forming system and method |
| CN110450212B (en) * | 2019-08-15 | 2022-02-08 | 庄孔庆 | Process method for bending and cutting oblique opening of paper straw |
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2020
- 2020-01-09 CN CN202010020097.8A patent/CN111206458B/en active Active
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