CN107254796B - Dry net cleaning device - Google Patents

Dry net cleaning device Download PDF

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Publication number
CN107254796B
CN107254796B CN201710674343.XA CN201710674343A CN107254796B CN 107254796 B CN107254796 B CN 107254796B CN 201710674343 A CN201710674343 A CN 201710674343A CN 107254796 B CN107254796 B CN 107254796B
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China
Prior art keywords
guide roller
dry net
dry
cleaning head
cleaning
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Active
Application number
CN201710674343.XA
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Chinese (zh)
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CN107254796A (en
Inventor
杨文恒
刘玉国
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Nine Dragons Paper Holdings Ltd
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Nine Dragons Paper Holdings Ltd
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Priority to CN201710674343.XA priority Critical patent/CN107254796B/en
Publication of CN107254796A publication Critical patent/CN107254796A/en
Application granted granted Critical
Publication of CN107254796B publication Critical patent/CN107254796B/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/32Washing wire-cloths or felts

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  • Cleaning By Liquid Or Steam (AREA)
  • Paper (AREA)
  • Cleaning In General (AREA)

Abstract

The invention discloses a dry net cleaning device which comprises a guide roller and a cleaning head, wherein the inner side of a dry net to be cleaned is clung to part of the outer wall of the guide roller, the cleaning head comprises a backflow part and a nozzle arranged at an opening of the backflow part, the nozzle faces the guide roller and sprays water flow to the dry net at the guide roller, sewage obtained after the dry net is cleaned returns to the backflow part under the reflection effect of the roller surface of the guide roller, and the sewage enters a sewage pipeline by vacuum suction and is discharged. The dry net cleaning device provided by the invention utilizes the guide roller to guide and limit the moving track of the dry net on one hand and reflect the water flow sprayed to the dry net for cleaning on the other hand, so that the influence on paper machine parts caused by sewage entering the inner side of the dry net is avoided.

Description

Dry net cleaning device
Technical Field
The invention relates to the field of papermaking, in particular to a dry net cleaning device.
Background
When the existing dry net cleaning device is used for cleaning the dry net, the high-pressure water pipe is directly used for spraying and flushing the dry net, and the result is that sewage after the dry net is cleaned is blown into the inner side of the net, and the water mist penetrating through the dry net can corrode guide rollers and other paper machine parts.
Not only affects the cleaning effect of the dry net, but also seriously affects the service life of the paper machine, there is a need for improved developments in prior art dry wire cleaning devices.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a dry net cleaning device, which utilizes guide rollers to guide and limit the moving track of a dry net on one hand and reflect water flow sprayed to the dry net for cleaning on the other hand, so as to prevent sewage from entering the inner side of the dry net, and the technical scheme is as follows:
the invention provides a dry net cleaning device which comprises a guide roller and a cleaning head, wherein the inner side of a dry net to be cleaned is clung to part of the outer wall of the guide roller, the cleaning head comprises a backflow part and a nozzle arranged at an opening of the backflow part, the nozzle faces the guide roller and sprays water flow to the dry net at the guide roller, and sewage obtained after the dry net is cleaned returns to the backflow part under the reflection effect of the roller surface of the guide roller.
Further, the device also comprises a driving mechanism, the dry net moves along the guide roller under the acting force of the driving mechanism, the guide roller can rotate around the fixed shaft, and the cleaning head is arranged below the guide roller.
Further, the cleaning head further comprises a venturi tube, wherein the venturi tube is connected and communicated with the rear end of the backflow part, and the venturi tube is used for generating negative pressure to suck and clean sewage obtained after the dry net is cleaned.
Further, the reflux part of the cleaning head is provided with an arc-shaped opening, the opening has the same radian as the roller surface of the guide roller, and the distance between the jet orifice of the nozzle and the roller surface is 1-10mm.
Further, the device also comprises a cross beam for carrying the cleaning head.
Further, the device also comprises an annular chain, and the annular chain drives the cleaning head to reciprocate along the length direction of the guide roller under the drive of the power mechanism.
Further, the cleaning head also comprises a drain pipe, and the drain pipe is connected and communicated with the rear end of the venturi tube.
Further, the cleaning head further comprises an air knife, and the air knife is arranged at the opening end of the backflow part.
Further, the device also comprises a water pan, wherein the water pan is used for collecting water flow of the cleaning head.
Further, the number of the nozzles is one or more, the nozzles are connected with a high-pressure water pipe, and the backflow part is made of heat-resistant anti-sticking materials.
The dry net cleaning device provided by the invention has the following beneficial effects:
a. preventing the dirt from polluting the guide roller and the paper machine;
b. the hair washing can not be stained with dirt, and the self-cleaning effect is good;
c. and the multi-nozzle structure is adopted, so that the cleaning efficiency of the dry net is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a dry wire cleaning device according to an embodiment of the present invention;
fig. 2 is a schematic view of a cleaning head of a dry wire cleaning device according to an embodiment of the present invention
Fig. 3 is a side view of a dry wire cleaning apparatus provided in an embodiment of the present invention.
Wherein, the reference numerals include: 1-dry net, 2-guide roller, 3-cleaning head, 31-nozzle, 32-reflux unit, 33-venturi tube, 34-blow-off pipe, 35-air knife, 4-annular chain and 5-cross beam.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate, so that embodiments of the invention described herein may be practiced otherwise than as specifically illustrated and 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, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
Example 1
In one embodiment of the present invention, referring to fig. 1, there is provided a dry wire cleaning device, where the dry wire cleaning device includes a guide roller 2 and a cleaning head 3, the inner side of a dry wire 1 to be cleaned is closely attached to a part of the outer wall of the guide roller 2, the cleaning head 3 includes a nozzle 31 and a backflow part 32, the nozzle faces the guide roller 2, the nozzle 31 is connected with a high-pressure water pipe, and sprays high-pressure water flow to the dry wire 1 at the guide roller 2, and sewage obtained after cleaning the dry wire 1 bounces back to the backflow part 32 under the reflection effect of the roller surface of the guide roller 2, and finally returns to a water receiving tray, so that the sewage is prevented from being blown into the inner side of the wire when cleaning the dry wire, and the sewage penetrating through the dry wire will corrode the guide roller and other paper machine parts. In this embodiment, the guide roller 2 can rotate around the fixed shaft, and on one hand, the guide roller guides and limits the moving track of the dry net, and on the other hand, reflects the water flow sprayed to the dry net for cleaning, so as to prevent sewage from entering the inner side of the dry net and affecting paper machine parts.
For continuous cleaning of the dry wire, the dry wire cleaning device further comprises a driving mechanism, the dry wire 1 moves along the guide roller 2 under the action of the driving mechanism, i.e. the dry wire 1 is continuously moved past the guide roll 2, and the cleaning head 3 is arranged below the guide roll 2, i.e. the moving dry wire 1 is continuously cleaned by the cleaning head 3.
In the embodiment of the present invention, the device further includes a cross beam 5 and an annular chain 4, the cross beam 5 is used for carrying the cleaning head 3, the annular chain 4 is driven by the power mechanism to drive the cleaning head 3 to reciprocate along the length direction of the guide roller 2, so that the high-pressure water flow sprayed in the nozzle 31 cleans each position in the width direction of the dry net, and in the embodiment, a space for installing the annular chain 4 is provided inside the cross beam 5, and the annular chain 4 is preferably a tank chain.
In a preferred embodiment of the present invention, the cleaning head 3 further comprises a venturi tube 33, a drain tube 34 and an air knife 35, referring to fig. 2, the venturi tube 33 is connected and communicated with the rear end of the return portion 32, the set point is 60mm away from the water needle impact net, and the special design of the venturi tube 33 ensures the efficient suction of the sewage return water receiving disc; the drain pipe 34 and venturi the rear ends of the tubes 33 are connected and communicated; the air knife 35 is disposed at the open end of the backflow portion 32, for cleaning water marks and stains remaining on the dry wire 1, the number of the nozzles 31 may be one, preferably a plurality, referring to fig. 3, and the nozzle units are preferably of a freely telescopic structure, so that replacement of the nozzles is very simple, and the backflow portion 32 is preferably made of a heat resistant and anti-sticking material to accelerate backflow of the liquid.
In order to prevent sewage from leaking out of the cleaning head 3, the opening of the backflow part 32 of the cleaning head 3 has the same radian as the roller surface of the guide roller 2, referring to fig. 1 and 3, the shape of the opening end of the backflow part 32 can be attached to the guide roller 2, a gap is left between the two parts for enabling the dry net 1 to smoothly pass through, the gap is not too long so as to prevent the water injection angle from being too large to pass through the dry net 1 at the non-guide roller 2, and the distance between the injection opening of the nozzle 31 and the roller surface is 1-10mm, preferably 3mm.
Example 2
Unlike the embodiment 1 in which the endless chain 4 is provided to drive the cleaning head 3 to reciprocate along the length direction of the guide roller 2, in the embodiment of the present invention, the cleaning head 3 is in a shape of an elongated slot, that is, the width of the backflow portion 32 of the cleaning head 3 is greater than the length of the guide roller 2, and the backflow portion 32 preferably adopts a funnel shape with a wide front and a narrow rear, one or more rows of nozzles 31 are arranged at the front end opening of the backflow part 32, the nozzles 31 simultaneously spray high-pressure water flow to each area of the dry net 1 clung to the guide roller 2, and the water flow reflected by the roller surface returns to the groove-shaped backflow part 32 without a tank chain to drive the cleaning head to reciprocate left and right.
The venturi 33 connection is also preferred in this application, the principle of the venturi effect being that when wind blows across the barrier, the air pressure is relatively low near the port above the lee side of the barrier, thereby creating a suction and causing a flow of air. The principle of the venturi is simple in that it tapers the gas flow from a coarse one to accelerate the gas flow rate so that the gas forms a "vacuum" zone at the rear side of the venturi outlet. When the vacuum area approaches the workpiece a certain adsorption effect is generated on the workpiece. Referring to fig. 3, the venturi tube 33 is constructed in a first-constriction-then-relaxation structure, and preferably, compressed air is introduced into the side opening of the venturi tube 33 to enhance the vacuum degree in the drain tube 34 behind the venturi tube 33, so as to further enhance the suction force for cleaning the sewage of the dry net 1.
The dry net cleaning process of the dry net cleaning device provided by the invention is as follows: the high-pressure water pipe is connected, meanwhile, an air knife 35 of water at the opening end of the cleaning head 3 is opened, the nozzle 31 sprays high-pressure water flow to the dry net 1 at the guide roller 2, under the reflection effect of the roller surface of the guide roller 2, sewage returns to the reflux part 32 of the cleaning head 3, and the compressed air discharged by the air knife 35 dries residual water marks and stains on the dry net 1, so that the residual water marks and stains are prevented from entering the net to corrode paper machine parts; on the other hand, due to the vacuum effect generated by the venturi tube 33, the water flowing back to the return portion 32 and the water sprayed onto the dry wire 1 are finally returned to the drain tube 34 or to the water receiving tray by suction.
The dry net cleaning device is communicated with the cleaning head from the bracket by adopting a high-pressure water pipe and an air pipe. The cleaning head is opposite to the net surface at the position of the guide roller, and the water needle impacts the net surface to scatter dirt and rebound into the cleaning head along with impact from the roller surface.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (5)

1. The dry net cleaning device is characterized by comprising a guide roller (2) and a cleaning head (3), wherein the inner side of a dry net (1) to be cleaned is clung to part of the outer wall of the guide roller (2), the cleaning head (3) comprises a backflow part (32), a nozzle (31) arranged at the opening of the backflow part (32), an air knife (35), a venturi tube (33) and a drain tube (34), the nozzle (31) faces the guide roller (2), water flow is sprayed to the dry net (1) at the guide roller (2), and sewage obtained after the dry net (1) is cleaned returns to the backflow part (32) under the reflection effect of the roller surface of the guide roller (2);
the reflux part (32) of the cleaning head (3) is provided with an arc-shaped opening, the opening has the same radian as the roller surface of the guide roller (2), and the distance between the jet orifice of the nozzle (31) and the roller surface is 1-10mm; the cleaning head (3) is in a bar-shaped groove bucket shape, the width of a backflow part (32) of the cleaning head (3) is larger than the length of the guide roller (2), the backflow part (32) is in a funnel shape with a wide front part and a narrow rear part, one or more rows of nozzles (31) are arranged at the front end opening of the backflow part (32), and the nozzles (31) are configured to be connected with a high-pressure water pipe;
the air knife (35) is arranged at the opening end of the backflow part (32) and is used for cleaning water marks and stains remained on the dry net (1);
the venturi tube (33) is of a structure of shrinking before widening, is connected and communicated with the rear end of the backflow part (32), and is used for generating negative pressure to suck and clean sewage obtained after the dry net (1); the blow-down pipe (34) is connected and communicated with the rear end of the venturi tube (33), and compressed air is input into the side opening of the venturi tube (33) so as to enhance the vacuum degree in the blow-down pipe (34) behind the venturi tube (33).
2. A dry wire cleaning device according to claim 1, characterized in that the device further comprises a drive mechanism, the dry wire (1) being moved along a guide roll (2) under the force of the drive mechanism, the guide roll (2) being rotatable about a fixed axis, the cleaning head (3) being arranged below the guide roll (2).
3. A dry wire cleaning device according to claim 1, characterized in that the device further comprises a cross beam (5), which cross beam (5) is adapted to carry the cleaning head (3).
4. A dry wire cleaning device according to claim 1, characterized in that the device further comprises a water pan for collecting the water flow of the cleaning head (3).
5. A dry wire cleaning apparatus as claimed in any one of claims 1 to 4, wherein the return portion (32) is made of a heat resistant anti-sticking material.
CN201710674343.XA 2017-08-09 2017-08-09 Dry net cleaning device Active CN107254796B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710674343.XA CN107254796B (en) 2017-08-09 2017-08-09 Dry net cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710674343.XA CN107254796B (en) 2017-08-09 2017-08-09 Dry net cleaning device

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CN107254796B true CN107254796B (en) 2024-02-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111101118A (en) * 2019-11-29 2020-05-05 昆山东威科技股份有限公司 Reflux tank and device with same
CN113894078A (en) * 2021-09-28 2022-01-07 福涞堡造纸技术(上海)有限公司 Online roller surface cleaning device and method

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WO1997042373A1 (en) * 1996-05-09 1997-11-13 Robo Paper Engineering B.V. Cleaning device for cleaning a dewatering screen in a wet or dry section or a wet felt in a press section of a paper making machine
US5792318A (en) * 1996-11-18 1998-08-11 Mancini; Ralph Method to stabilize sheet between press section and dryer section of a paper-making machine
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CN202164500U (en) * 2011-06-09 2012-03-14 金红叶纸业集团有限公司 Woolen blanket processing system and papermaking machine including same
CN202951666U (en) * 2012-12-14 2013-05-29 深圳市星河电路有限公司 Cleaning device for screen plate
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CN104652169A (en) * 2013-11-20 2015-05-27 金红叶纸业集团有限公司 Spray device and papermaking device
CN104894907A (en) * 2015-05-05 2015-09-09 浙江荣晟环保纸业股份有限公司 Dry net cleaning device for papermaking machine
CN105220554A (en) * 2015-10-21 2016-01-06 绵阳市星瑞机电有限责任公司 A kind of paper machine dry net on-line cleaning machine
CN205134093U (en) * 2015-11-12 2016-04-06 绵阳拓峰科技有限公司 Cleaning head of cleaning machine
WO2016086470A1 (en) * 2014-12-02 2016-06-09 深圳市华星光电技术有限公司 Substrate cleaning device and method for cleaning substrate using same
CN207031914U (en) * 2017-08-09 2018-02-23 玖龙纸业(太仓)有限公司 A kind of dry net cleaning device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9203538D0 (en) * 1992-11-25 1992-11-25 Staffan Sjoeberg DEVICE FOR CLEANING GOODS IN MOVEMENT
CN1135552A (en) * 1995-02-24 1996-11-13 沃伊夫苏尔泽造纸机器有限公司 Cleaning device
WO1997042373A1 (en) * 1996-05-09 1997-11-13 Robo Paper Engineering B.V. Cleaning device for cleaning a dewatering screen in a wet or dry section or a wet felt in a press section of a paper making machine
US5792318A (en) * 1996-11-18 1998-08-11 Mancini; Ralph Method to stabilize sheet between press section and dryer section of a paper-making machine
DE19918549A1 (en) * 1999-04-23 2000-10-26 Voith Sulzer Papiertech Patent System to clean fourdriniers at a papermaking or cardboard production machine, has cleaning stations to direct high pressure and compressed gas/air streams at the fourdriniers in their path without fittings at guide rollers
DE19940980A1 (en) * 1999-08-28 2001-03-01 Voith Paper Patent Gmbh Assembly to clean a roller surface at the gap between the roller and the departing fourdrinier/blanket has a structured suction channel and cleaning spray tube with a suction box and deflector bars
CN102224287A (en) * 2008-11-25 2011-10-19 3M创新有限公司 Apparatus and method for cleaning flexible webs
CN202164500U (en) * 2011-06-09 2012-03-14 金红叶纸业集团有限公司 Woolen blanket processing system and papermaking machine including same
CN202954259U (en) * 2012-11-14 2013-05-29 安徽山鹰纸业股份有限公司 Cleaning device for dry mesh using waste paper as raw materials to produce fine dried noodle case board paper
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WO2016086470A1 (en) * 2014-12-02 2016-06-09 深圳市华星光电技术有限公司 Substrate cleaning device and method for cleaning substrate using same
CN104894907A (en) * 2015-05-05 2015-09-09 浙江荣晟环保纸业股份有限公司 Dry net cleaning device for papermaking machine
CN105220554A (en) * 2015-10-21 2016-01-06 绵阳市星瑞机电有限责任公司 A kind of paper machine dry net on-line cleaning machine
CN205134093U (en) * 2015-11-12 2016-04-06 绵阳拓峰科技有限公司 Cleaning head of cleaning machine
CN207031914U (en) * 2017-08-09 2018-02-23 玖龙纸业(太仓)有限公司 A kind of dry net cleaning device

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