CN115434179A

CN115434179A - Paper machine guide roller with dewatering function and use method

Info

Publication number: CN115434179A
Application number: CN202211064496.XA
Authority: CN
Inventors: 孔令波; 李佳豪
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-06

Abstract

The invention discloses a paper machine guide roller with a dewatering function and a use method thereof, belonging to the technical field of new energy and energy conservation, comprising the following steps: the guide roller cylinder body, left rotation power shaft and right rotation back shaft, in order to improve the current situation of the high energy consumption of traditional papermaking dehydration process, reduce product manufacturing cost, combine the technical advantage of ultrasonic wave technique, through set up the ultrasonic atomization piece on the working face of guide roller cylinder body, with ultrasonic wave intensive dehydration technique application on the wet end transmission of paper machine or the conveying deflector roll of dry end early stage, additionally add dewatering function on the basis of guaranteeing the deflector roll conveying paper web, realize taking off partial moisture in the wet paper web rapidly in short time, can effectively reduce vacuum dehydration power consumption and drying process energy consumption. The dewatering holes are arranged for draining water, and meanwhile, the number of drying cylinders required by drying of the paper machine can be greatly reduced and the length of the paper machine can be shortened due to the reduction of the drying and dewatering capacity.

Description

Paper machine guide roller with dewatering function and use method

Technical Field

The invention belongs to the technical field of papermaking energy-saving equipment, and particularly relates to a paper machine guide roller with a dewatering function and a use method thereof.

Background

The paper industry is an important industry closely related to national economic development and social civilization construction. In developed countries, the rate of increase in paper and board consumption is synchronized with the rate of increase in the total production in the country, and the role played by the paper industry in modern economy has attracted more and more attention worldwide. Drying is always the focus of energy conservation and consumption reduction as a high-energy-consumption unit operation in papermaking production. It is statistical that the dewatering capacity of the drying section of a paper machine is only about 1% of the water content of the upper web stock, but the drying section itself accounts for 40% of the total investment cost of the paper machine, the drying energy consumption is even more up to 65% of the total energy consumption of the paper making process, and the cost and energy consumption will be higher for pulp drying. Thus, there is great optimization potential of the drying unit, both from the point of view of the paper or pulp machine design, and also from the point of view of the drying energy consumption and its energy saving potential.

The guide roller is a cylindrical rotatable object in the machine, and a common power source (such as a motor) in the machine drives the guide roller to drive other materials to move forward. The guide rollers are the main conveying equipment in the paper production process, and in the prior art, a large number of guide rollers are distributed in the whole paper making process and are used for vacuum dehydration or transferring paper web to advance, so that the guide rollers inevitably occupy a large amount of space in the wet part and the dry part of the paper machine and consume a large amount of energy.

Disclosure of Invention

In order to overcome the disadvantages of the prior art, the present invention provides a guide roll for a paper machine with a dewatering function and a method for using the same, so as to solve the problems that the guide roll occupies a large space in the wet end and the dry end of the paper machine and consumes a large amount of energy in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

the invention discloses a paper machine guide roller with a dewatering function, which comprises: the guide roller cylinder body, the left rotating power shaft and the right rotating support shaft; the motor pivot of left-handed rotation power shaft setting in deflector roll cylinder body one end and papermaking equipment is connected, and the right-handed rotation back shaft setting is connected with the supersonic generator output at the other end of deflector roll cylinder body, the deflector roll cylinder body includes a plurality of working face and a plurality of non-working face, and working face and non-working face alternate setting all are provided with the ultrasonic atomization ware mounting hole that a plurality of is used for installing the ultrasonic atomization piece on every working face, and the dehydration hole has all been seted up at the both ends of working face and non-working face.

Preferably, the inside a plurality of atomizing water flow pipe that still is provided with of deflector roll cylinder body, a plurality of atomizing water flow pipe are connected with the ultrasonic atomization ware mounting hole respectively, and atomizing water flow pipe end is provided with prevents apron against the current.

Preferably, the left rotating power shaft and the right rotating support shaft are both provided with: a stuffer-axis anchor and stuffer; the stuffers are arranged at two ends of the guide roller cylinder body and are respectively fixed with the left rotating power shaft and the right rotating support shaft through stuffer-shaft fixing keys.

Preferably, the stuffer is in interference fit with the guide roller cylinder.

Preferably, the right rotary support shaft further comprises: the electrode protection sleeve and the positive and negative electrodes; the positive and negative electrodes are also provided with a motor insulation protective sleeve, the positive and negative electrodes are arranged in the right rotary supporting shaft in a sliding mode, one end of the positive and negative electrodes extends into the guide roller cylinder body, the other end of the positive and negative electrodes is connected with the output end of the ultrasonic generator, the electrode protective sleeve is arranged at one end of the positive and negative electrodes extending into the guide roller cylinder body, and the electrode protective sleeve is fixed on the nut.

Preferably, the electrode protective sleeve is internally provided with a positive conducting ring, a negative conducting ring, a graphite electrode brush, a plastic conducting ring and an insulating rubber pad; the positive and negative conducting rings are arranged in the electrode protective sleeve, the positive and negative electrodes are separated through the plastic wire rings, the insulating rubber pads are arranged at two ends of the positive and negative conducting rings and used for insulating the end covers, the graphite electrode brushes are arranged at the ends of the positive and negative electrodes, and the graphite electrode brushes are in contact with the positive and negative conducting rings.

Preferably, grooves are formed in the positive and negative conducting rings, and the graphite electrode brushes are arranged in the grooves in a sliding mode.

Preferably, the electrode sheath is fixed to the terminal end of the funnel by an electrode sheath fastening screw.

The invention also discloses a use method of the paper machine guide roller with the dewatering function, which comprises the following steps:

the left rotary power shaft is connected with a motor rotating shaft in the papermaking equipment;

the anode and the cathode of a power supply reserved in the right rotary supporting shaft are correspondingly connected with the anode and the cathode of the output end of the ultrasonic generator;

and switching on the power supply of all the ultrasonic atomization sheets on the right rotary supporting shaft, mechanically dewatering the ultrasonic atomization sheets on the upper surface of the guide roller, and guiding the paper web in the paper machine to the next stage.

Compared with the prior art, the invention has the following beneficial effects:

the invention discloses a paper machine guide roller with a dewatering function, aiming at improving the current situation of high energy consumption in the traditional paper machine dewatering process and reducing the production cost of products, combining the technical advantages of an ultrasonic technology, the ultrasonic atomization sheet is arranged on the working surface of a guide roller cylinder body, the ultrasonic intensified dewatering technology is applied to a transfer guide roller in the wet end transfer or the early dry end of a paper machine, the dewatering function is additionally added on the basis of ensuring the paper web transferred by the guide roller, the moisture in the wet paper web is quickly removed in a short time, and the power consumption of vacuum dewatering and the energy consumption in the drying process can be effectively reduced. The dewatering holes are arranged for draining water, the right rotating supporting shaft is connected with the output end of the ultrasonic generator, the left rotating power shaft provides power, and meanwhile, due to the reduction of drying and dewatering capacity, the number of drying cylinders required by drying of the paper machine can be greatly reduced, and the length of the paper machine is shortened.

Furthermore, a plurality of atomized water flow guide pipes are further arranged inside the guide roller cylinder body and are respectively connected with the mounting holes of the ultrasonic atomizer to guide atomized water of the ultrasonic atomization piece to the inside of the guide roller cylinder body, and an anti-countercurrent cover plate is arranged at the tail end of each atomized water flow guide pipe, so that the phenomenon that the work efficiency of the ultrasonic atomization piece is influenced when atomized water drops brought to the top end of the cylinder body are lowered to the atomized water guide pipes due to inertia and surface tension in the rotating process of the drying cylinder is prevented.

Furthermore, the positive and negative electrodes are arranged in the right rotating supporting shaft in a sliding mode, and the positive and negative electrodes are guaranteed to be static and do not rotate along with the right rotating supporting shaft in a working process.

Further, the graphite electrode brush slides in the groove and is arranged to ensure that the guide roller is always communicated with the circuit of the ultrasonic atomization sheet in the operation process.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a partially enlarged view a of the present invention.

Fig. 4 is a partial enlarged view B of the present invention.

Wherein: 1-guide roller cylinder body; 2-ultrasonic atomization sheet; 3-rotating the power shaft left; 4-right rotating support shaft; 5-dead-shaft fixed key; 6-steaming the seeds; 7-an atomized water flow conduit; 8-electrode protection sleeve; 9-positive and negative electrodes; 10-fixing the key slot by the coupler; 11-electrode sheath fastening screw; 12-an electrode insulating protective sleeve; 13-positive and negative conducting rings; 14-graphite electrode brushes; 15-plastic wire loops; 16-insulating rubber mat; 17-anti-reflux cover plate.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is described in further detail below with reference to the accompanying drawings:

the ultrasonic wave is a sound wave with the frequency higher than 20000Hz, and is mainly characterized by good directivity, strong penetrating power and easy acquisition of more concentrated sound energy. In recent years, many students who study rapid drying adopt ultrasonic waves to dry fabrics, crops and the like, and the ultrasonic waves are found to greatly shorten the drying time and reduce the energy consumption. The high-frequency vibration of the ultrasonic atomization sheet is proved to remove water on the surface and in the fiber material and atomize the water into water mist. The dehydration mode has quick response, and the energy consumption of unit mass dehydration is far lower than that of the traditional thermal drying.

The invention discloses a paper machine guide roller with dewatering function, which aims at the problems that in the prior art, a large number of guide rollers are distributed in the whole paper making process and are used for vacuum dewatering or transferring paper web to advance, and the guide rollers inevitably occupy a large amount of space in the wet part and the dry part of a paper machine and consume a large amount of energy, and comprises: the guide roller cylinder body 1, the left rotating power shaft 3 and the right rotating support shaft 4; the motor pivot of left-handed rotation power shaft 3 setting in 1 one end of deflector roll cylinder body and papermaking equipment is connected, and the setting of right-handed rotation back shaft 4 is connected with the supersonic generator output at the other end of deflector roll cylinder body 1, deflector roll cylinder body 1 includes a plurality of working face and a plurality of non-working face, and working face and non-working face set up alternately, all are provided with the ultrasonic atomization ware mounting hole that a plurality of is used for installing ultrasonic atomization piece 2 on every working face, and the dehydration hole has all been seted up at the both ends of working face and non-working face.

Referring to fig. 1 to 4, the novel paper machine guide roller with the dewatering function comprises a whole guide roller cylinder body 1 and is characterized in that an ultrasonic atomization sheet 2, a left rotating power shaft 3, a right rotating support shaft 4, a stuffy-shaft fixing key 5, a stuffy-shaft 6, an atomized water flow conduit 7, an electrode protection sleeve 8, a positive electrode and a negative electrode 9, a coupler fixing key groove 10, an electrode protection sleeve fastening screw 11, an electrode insulation protection sleeve 12, a positive conductive ring and a negative conductive ring 13, a graphite electrode brush 14, a plastic wire ring 15 and an insulation rubber pad 16 are arranged in a transducer main body.

The surface of the guide roller cylinder body 1 is provided with an ultrasonic atomizer mounting hole. The outer surface of the guide roller cylinder body 1 is formed by 18 rectangular planes with the same size. The rectangular planes are equally divided into two types, namely 9 working planes and non-working planes, and the rectangular planes of the two types are mutually spaced. Wherein each rectangular working plane comprises 120 ultrasonic atomizer mounting holes. And 18 dewatering holes are uniformly distributed on the reinforcing ribs at the two ends of the outer surface of the guide roller cylinder body 1 for draining water.

The ultrasonic atomization piece 2 that bonds with glue is installed in the ultrasonic atomizer mounting hole of 1 surface of deflector roll cylinder body, and 2 atomizing surfaces of ultrasonic atomization piece are used for getting rid of the wet embryo moisture that contacts towards the deflector roll cylinder body surface.

The ultrasonic atomizer mounting hole of deflector roll cylinder body 1 surface is used for guiding the atomized moisture of ultrasonic atomization piece 2 to inside the deflector roll cylinder body 1 through screw-thread fit with atomizing rivers pipe 7. The tail end of the atomized water guide pipe 7 is matched with the anti-reflux cover plate 17 through threads, and the purpose of the anti-reflux cover plate is to prevent atomized water drops brought to the top end of the cylinder body 1 by inertia and surface tension in the rotating process of the drying cylinder from falling into the atomized water guide pipe 7 to influence the working efficiency of the ultrasonic atomization sheet 2.

The left rotary power shaft 3 comprises a stuffy-shaft fixed key 5, a stuffy nut 6 and a coupler fixed key groove 10. The left rotary power shaft 3 secures the left rotary power shaft 3 and the bell 6 by placing the bell-shaft securing key 5 in a fixed keyway in the bell 6 so that they remain relatively stationary during rotation. Interference fit is realized between the stator 6 fixed on the left-handed rotation power shaft 3 and the guide roller cylinder body 1, so that the stator 6 is enabled to drive the guide roller cylinder body 1 to rotate together in the rotating process of the left-handed rotation power shaft 3.

The right rotary supporting shaft 4 comprises a choking-shaft fixing key 5, a choking nut 6, an atomized water flow conduit 7, an electrode protective sleeve 8, a positive electrode 9, a negative electrode 9, a coupler fixing key groove 10, an electrode protective sleeve fastening screw 11, an electrode insulating protective sleeve 12, a positive conducting ring 13, a negative conducting ring 13, a graphite electrode brush 14, a plastic conducting ring 15 and an insulating rubber pad 16. The right rotating support shaft 4 secures the right rotating support shaft 4 and the smolder 6 by placing the smolder-shaft securing key 5 in a securing keyway in the smolder 6 so that they remain relatively stationary during rotation. Interference fit between the stator 6 fixed on the right rotary supporting shaft 4 and the guide roller cylinder body 1 can ensure that the stator 6 drives the guide roller cylinder body 1 to rotate together in the rotating process of the right rotary supporting shaft 4.

The right rotary supporting shaft 4 contains an electrode insulating protective sleeve 12 for protecting and insulating the positive and negative electrodes 9. The electrode insulating protective sleeve 12 inside the right rotary supporting shaft 4 is kept still all the time during the rotation, and the gap between the two is filled with lubricating oil. The electrode insulating protective sleeve 12 and the positive and negative electrodes 9 protected by the electrode insulating protective sleeve are provided with a fixed frame when externally connected with a power supply under external clamping force, and the fixed frame is kept still all the time in the working process of the guide roller cylinder body 1.

The tail ends of the right rotary supporting shaft 4 and the right rotary supporting shaft 6 are fixedly matched with the tail ends of the electrodes through electrode protective sleeve fastening screws 11 to fix the electrode protective sleeve 8. The purpose of which is to protect and insulate the power supply equipment inside the electrode sheath 8.

The electrode protective sleeve 8 is internally provided with a positive conducting ring 13 and a negative conducting ring 13 which are separated by a plastic conducting wire ring 12. 2 insulating rubber gaskets 16 are respectively disposed at two ends of the positive and negative conductive rings 13 for insulating the end caps. The tail ends of the positive and negative electrodes 9 are inlaid with graphite electrode brushes 14 and are in sliding coupling with the grooves in the negative conducting ring 13 so as to provide power for the ultrasonic atomization sheet 2 in the rotating process. The insulating rubber pad 16, the plastic conductor ring 12 and the positive and negative conducting rings 13 are matched and fastened with the electrode protective sleeve 8 through bolts.

Referring to fig. 4, the anti-reflux cover plate 17 is connected with the ultrasonic atomization sheet 2 through the atomized water conduit 7 to form a paper machine guide roller dewatering system. The anti-reflux cover plate 17 is arranged in the guide roller cylinder body 1 and is in interference fit with the tail end of the atomized water guide pipe 7 to prevent atomized condensed water from flowing back to the ultrasonic atomization sheet 2 to reduce dehydration efficiency in the operation process of the equipment.

The invention also discloses a use method of the novel paper machine guide roller with the dewatering function, which comprises the following steps:

the left rotary power shaft 3 is connected with a motor rotating shaft in the papermaking equipment.

And correspondingly connecting the anode and the cathode of a power supply reserved in the right rotary supporting shaft 4 with the anode and the cathode of the output end of the ultrasonic generator.

And the power supply of all the ultrasonic atomization pieces 2 on the right rotary supporting shaft 4 is switched on.

The paper web is mechanically dewatered in the paper machine by the ultrasonic atomization sheet 2 passing over the upper surface of the guide roll and is led to the next stage.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A paper machine guide roll with dewatering function, comprising: a guide roller cylinder body (1), a left rotary power shaft (3) and a right rotary support shaft (4); the motor pivot that levogyration power shaft (3) set up in deflector roll cylinder body (1) one end and papermaking equipment is connected, and dextrorotation back shaft (4) set up the other end and be connected with the supersonic generator output in deflector roll cylinder body (1), deflector roll cylinder body (1) includes a plurality of working face and a plurality of non-working face, and working face and non-working face alternate setting all are provided with the ultrasonic atomization ware mounting hole that a plurality of is used for installing ultrasonic atomization piece (2) on every working face, and the dehydration hole has all been seted up at the both ends of working face and non-working face.

2. The guide roller with the dewatering function for the paper machine as claimed in claim 1, characterized in that a plurality of atomized water flow conduits (7) are further arranged inside the guide roller cylinder body (1), the atomized water flow conduits (7) are respectively connected with the mounting holes of the ultrasonic atomizers, and the ends of the atomized water flow conduits (7) are provided with anti-reflux cover plates (17).

3. A paper machine guide roll with dewatering function as claimed in claim 1, characterised in that both the left rotary power shaft (3) and the right rotary support shaft (4) are provided with: a stuffy-shaft fixed key (5) and a stuffy nut (6); the stuffer (6) is arranged at two ends of the guide roller cylinder body (1), and the stuffer (6) is respectively fixed with the left rotary power shaft (3) and the right rotary support shaft (4) through stuffer-shaft fixing keys (5).

4. A paper machine guide roll with dewatering function according to claim 3, characterized in that the stuffer (6) is interference fitted with the guide roll cylinder (1).

5. A paper machine guide roll with dewatering function according to claim 3, characterized in that the right rotating support shaft (4) further comprises: an electrode protective sleeve (8) and positive and negative electrodes (9); positive and negative electrode (9) still are provided with motor insulation protection cover (12) outward, and positive and negative electrode (9) slide to set up one end and stretch into deflector roll cylinder body (1) in right swivel support shaft (4), and the other end is connected with the supersonic generator output, and electrode protection cover (8) set up and stretch into deflector roll cylinder body (1) one end in positive and negative electrode (9), and electrode protection cover (8) are fixed on vexed son (6).

6. The guide roll with dewatering function of claim 5, characterized in that the electrode protecting sleeve (8) is provided with positive and negative conductive rings (13), graphite electrode brush (14), plastic wire ring (15) and insulating rubber pad (16); the positive and negative conducting rings (13) are arranged in the electrode protective sleeve (8) and are separated from each other through plastic conducting rings (15), insulating rubber pads (16) are arranged at two ends of the positive and negative conducting rings (13) and are used for insulating end covers, graphite electrode brushes (14) are arranged at the ends of the positive and negative electrodes (9), and the graphite electrode brushes (14) are in contact with the positive and negative conducting rings (13).

7. The guide roll with the dewatering function for the paper machine as claimed in claim 6, wherein grooves are formed in the positive and negative conductive rings (13), and the graphite electrode brushes (14) are slidably arranged in the grooves.

8. Guide roll for a paper machine with dewatering function according to claim 5, characterised in that the electrode sheath (8) is fastened to the end of the stuffer (6) by means of an electrode sheath fastening screw (11).

9. Use of a guide roll for a paper machine having a dewatering function according to any one of claims 1 to 8, characterized in that it comprises:

the left rotary power shaft (3) is connected with a motor rotating shaft in the papermaking equipment;

the anode and the cathode of a power supply reserved in the right rotary supporting shaft (4) are correspondingly connected with the anode and the cathode of the output end of the ultrasonic generator;

and (3) switching on the power supply of all the ultrasonic atomization sheets (2) on the right rotary supporting shaft (4), mechanically dewatering the ultrasonic atomization sheets (2) on the upper surface of the guide roller, and guiding the paper web in the paper machine to the next stage.