CN207210841U - A kind of hot-rolling of roll presses for paper industry - Google Patents

Abstract

The utility model discloses a kind of hot-rolling of roll presses for paper industry, belong to pulp technology for making paper, including hollow buffer roll, the heating roller that is opened in the heating medium entrance of buffer roll one end and is sheathed on outside buffer roll, some spray orifices are offered on the circumferential wall of the buffer roll, some row's Buffer Units are provided with the inwall of the buffer roll, one end of the heating roller is provided with Crude product input；The utility model solves the problems, such as that the too high dangerous situation for causing paper jaundice even to burn of temperature existing for hot-rolling heating occurs in calender, has the advantages of heating-up temperature is easy to control and stable.

Description

A kind of hot-rolling of roll presses for paper industry

Technical field

The utility model belongs to pulp technology for making paper, and in particular to a kind of hot-rolling of roll presses for paper industry.

Background technology

Calender be determine paper quality index key equipment, one kind of press polish glazing process.Printed matter surface passes through After coating, treat that glazing layer is dried, can be through calender press polish if the smoothness and glossiness of light coating need to be improved again.Typically The glossiness of glazing can reach more than 90-95% glossiness after 65-85% or so, press polish.

Calender is mainly made up of the part such as printed matter conveying mechanism, machine driving, electrical apparatus control system, includes print respectively Brush product transport platform, Manual high-pressure oil pump, hot-rolling plus roller, speed governing motor, press polish steel band, cooler bin, observation door, cooling water Groove, ventilation circulation system, delivery roll, printed matter collection table.

Because paper-making fibre has " vitrifying " temperature, thus the calendaring effect can greatly improve at high temperature.Paper finishing The nip of press polish is made up of a soft roller and a hot-rolling, and when page is through overpressure zone, because of soft roller compression elastic deformation, nip becomes Width, although line pressure is very big, pressure is not high, and the one side that paper contacts with hot-rolling obtains cosmetic outcome.In process of production, Felt wrapped roll is run simultaneously with paper machine all the time.When no paper passes through nip, hot-rolling, soft roller are automatically separated, and avoid hot-rolling from scalding Hinder soft roll cladding layer.

Existing hot-rolling is mainly heated up by the mode hot-rolling of infrared heating, but infrared heating needs accurately The emission measure of the control infrared ray, not so it can occur because of the too high dangerous situation for causing paper jaundice or even burning of temperature, from And bring detrimental effect to production.

Utility model content

The purpose of this utility model in for calender hot-rolling heating existing for temperature it is too high cause paper jaundice very The problem of occurring to the dangerous situation of burning, the utility model provides a kind of hot-rolling of roll presses for paper industry.

The technical solution adopted in the utility model is as follows：A kind of hot-rolling of roll presses for paper industry, including hollow buffer roll, open Heating medium entrance and the heating roller that is sheathed on outside buffer roll located at buffer roll one end, open on the circumferential wall of the buffer roll Provided with some spray orifices, some row's Buffer Units are provided with the inwall of the buffer roll, one end of the heating roller, which is provided with, to be added Thermal medium outlet.

Further limit, polytetrafluoroethylene (PTFE) roller is arranged with outside the heating roller.

Further limit, diameter parallel of the Buffer Unit with the buffer roll described in each row, buffering described in each row Component includes the buffer board that some radical lengths increase successively.

Further limit, be provided with least described in one piece on the buffer roll inwall of the both sides of each spray orifice Buffer board, the inward-facing depression of the buffer board towards the heating medium entrance form guiding gutter.

Further limit, the heating roller inwall is tiltedly installed with some deflectors.

In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are：

1. the utility model is carried out using heating medium to heating roller, heating replacement is exothermal infrared to be added to heating roller Heat so that the easy temperature control system of hot-rolling and not easily cause heat roller temperature too high and make it that paper turns to be yellow the dangerous feelings even burnt Condition occurs.

2. set Buffer Unit to reduce heating medium on the inwall of buffer roll enters buffering from heating medium entrance Produce impulse force in roller to the wall of buffer roll and heating medium turn back that heating medium entrance causes to heat medium can not be smooth Enter in spray orifice and buffer roll.

3. polytetrafluoroethylene (PTFE) has good anti-wear performance, resistance to elevated temperatures and high rigidity, can protect heating roller not by Abrasion, extend the service life of hot-rolling.

4. the diameter parallel of Buffer Unit and buffer roll is set, can to heat the vertical directive buffer board of medium, will The pressure of heating medium reduces as far as possible；Buffer board, which is arranged on the buffer roll inwall between spray orifice, can will rush at buffer board On heating medium be drained in spray orifice be easy to heat medium successfully can flow into heating roller；Buffer board is along the buffer roll Axial direction increases successively to reduce the impulse force of the heating medium entered from diverse location in buffer roll；Buffer board is towards adding The inward-facing depression of thermal medium inlet forms guiding gutter, can farthest be drained to the heating medium rushed on buffer board Spray orifice.

5. setting deflector in the inwall of heating roller, the heating medium entered in heating roller can be guided to heating roller At inwall, heat is transmitted in realization as wide as possible so that the uniform stabilization of the temperature of polytetrafluoroethylene (PTFE) roller surface.

Brief description of the drawings

The utility model will illustrate by example and with reference to the appended drawing,

Fig. 1 is structural representation of the present utility model；

Wherein：1- buffer rolls；2- heats medium entrance；3- Crude product inputs；4- Buffer Units；401- buffer boards； 402- guiding gutters；5- spray orifices；6- polytetrafluoroethylene (PTFE) rollers；7- deflectors；8- heating rollers.

Embodiment

All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.The utility model is elaborated below in conjunction with the accompanying drawings.

Embodiment one

The technical scheme of the present embodiment is：A kind of hot-rolling of roll presses for paper industry, including hollow buffer roll 1, be opened in it is slow The heating roller 8 for rushing the heating medium entrance 2 of the one end of roller 1 and being sheathed on outside buffer roll 1, open on the circumferential wall of the buffer roll 1 Provided with some spray orifices 5, some row's Buffer Units 4 are provided with the inwall of the buffer roll 1, one end of the heating roller 8 is set There is Crude product input 3.Polytetrafluoroethylene (PTFE) roller 6 is arranged with outside the heating roller 8.

Diameter parallel of the Buffer Unit 4 described in each row with the buffer roll 1, Buffer Unit 4 includes described in each row The buffer board 401 that some radical lengths increase successively.It is all provided with the inwall of the buffer roll 1 of the both sides of each spray orifice 5 At least one piece of buffer board 401 is equipped with, the inward-facing depression of the buffer board 401 towards the heating medium entrance 2 is formed Guiding gutter 402.

The inwall of heating roller 8 is tiltedly installed with some deflectors 7.

As shown in figure 1, heating medium is entered in buffer roll 1 by heating medium entrance 2, collide in being arranged at buffer roll 1 Entered after Buffer Unit 4 on inwall by spray orifice 5 in heating roller 8 and be guided to realization pair on the inwall of heating roller 8 through deflector 7 The process that polytetrafluoroethylene (PTFE) roller 6 heats, last heated media outlet 3 flow out hot-rolling.

The present embodiment use heating medium carries out heating to heating roller 8 and heating roller 8 is heated instead of exothermal infrared, So that the easy temperature control system of hot-rolling and do not easily cause heat roller temperature it is too high and so that the dangerous situation that even burns of paper jaundice Occur.

Set Buffer Unit 4 to reduce heating medium on the inwall of buffer roll 1 and enter buffering from heating medium entrance 2 Produce impulse force in roller 1 to the wall of buffer roll 1 and heating medium turn back that heating medium entrance 2 causes to heat medium can not be suitable Profit enters in spray orifice and buffer roll 1.

Polytetrafluoroethylene (PTFE) has good anti-wear performance, resistance to elevated temperatures and high rigidity, and heating roller can be protected not ground Damage, extend the service life of hot-rolling.

The diameter parallel of Buffer Unit 4 and buffer roll 1 is set, can to heat the vertical directive buffer board 401 of medium, The pressure for heating medium is reduced as far as possible；Buffer board 401 is arranged on the inwall of buffer roll 1 between spray orifice 5 and will can rushed It is drained to the heating medium on buffer board 401 in spray orifice 5 and is easy to heating medium successfully to flow into heating roller 8；Buffer board 401 radical length increases successively to reduce the impulse force of the heating medium entered from diverse location in buffer roll 1；Buffer board 401 form guiding gutter 402 towards the inward-facing depression for heating medium entrance, the heating medium that will can be rushed on buffer board 401 Farthest it is drained to spray orifice 5.

Deflector 7 is set in the inwall of heating roller 8, the heating medium entered in heating roller 8 can be guided to heating roller 8 Inwall at, realization transmit heat as wide as possible so that the uniform stabilization of temperature on the surface of polytetrafluoroethylene (PTFE) roller 6.

Embodiment two

The technical scheme of the present embodiment is：A kind of hot-rolling of roll presses for paper industry, including hollow buffer roll 1, be opened in it is slow The heating roller 8 for rushing the heating medium entrance 2 of the one end of roller 1 and being sheathed on outside buffer roll 1, open on the circumferential wall of the buffer roll 1 Provided with some spray orifices 5, some row's Buffer Units 4 are provided with the inwall of the buffer roll 1, one end of the heating roller 8 is set There is Crude product input 3.

As shown in figure 1, deep fat is entered in buffer roll 1 by heating medium entrance 2, collide in being arranged at the inwall of buffer roll 1 On Buffer Unit 4 after entered by spray orifice 5 in heating roller 8 and be guided to through deflector 7 on the inwall of heating roller 8 and realize heating roller 8 heating, last heated media outlet 3 flow out hot-rolling.

Oil is a kind of heat carrier and easy temperature control system well, has heat-transfer effect good and can reach higher temperature Advantage avoids the situation generation that paper is not easy jaundice or even burning；Buffer Unit 4 is set to subtract on the inwall of buffer roll 1 Small deep fat produces impulse force into the interior wall to buffer roll 1 of buffer roll 1 from heating medium entrance 2 and deep fat turns back and heats medium Import 2 causes deep fat to smoothly enter in spray orifice and buffer roll 1.

Embodiment three

On the basis of embodiment two, the technical scheme of the present embodiment is：Polytetrafluoroethylene (PTFE) is arranged with outside the heating roller 8 Roller 6.

As shown in figure 1, deep fat transfers heat to the wall of heating roller 8, the wall of heating roller 8 transfers heat to poly- again Tetrafluoroethene roller 6, polytetrafluoroethylene (PTFE) roller 6 directly contact with paper, so as to by paper surface vitrifying, increase the light of paper Pool；Polytetrafluoroethylene (PTFE) has good anti-wear performance, resistance to elevated temperatures and high rigidity, heating roller can be protected not to be worn, prolonged The service life of long hot-rolling.

Example IV

On the basis of embodiment two, the technical scheme of the present embodiment is：Buffer Unit 4 described in each row delays with described The diameter parallel of roller 1 is rushed, Buffer Unit 4 described in each row includes the buffer board 401 that some radical lengths increase successively；Each At least one piece of buffer board 401, the buffer board 401 are provided with the inwall of the buffer roll 1 of the both sides of the spray orifice 5 Inward-facing depression towards the heating medium entrance 2 forms guiding gutter 402.

Beaten as shown in figure 1, deep fat is rushed in buffer roll 1 on buffer board 401, flow into and add by spray orifice 5 along guiding gutter 402 In hot-rolling 8；The diameter parallel of Buffer Unit 4 and buffer roll 1 is set, the vertical directive buffer board 401 of deep fat can be caused, by heat The pressure of oil reduces as far as possible；Buffer board 401, which is arranged on the inwall of buffer roll 1 between spray orifice 5, can will rush at buffer board Deep fat on 401, which is drained in spray orifice 5, is easy to deep fat successfully to flow into heating roller 8；The radical length of buffer board 401 is successively Increase can reduce the impulse force of the deep fat entered from diverse location in buffer roll 1；Buffer board 401 towards hot oil inlet towards Sunken inside forms guiding gutter 402, the deep fat rushed on buffer board 401 can be farthest drained into spray orifice 5.

Embodiment five

On the basis of embodiment two or three or four, the technical scheme of the present embodiment is：The inwall of heating roller 8 is tilted and set It is equipped with some deflectors 7.

As shown in figure 1, the deep fat entered by spray orifice 5 in heating roller 8 is guided at the inwall of heating roller 8 through deflector 7, Inwall is heated, heat is transmitted in realization as wide as possible so that the uniform stabilization of temperature on the surface of polytetrafluoroethylene (PTFE) roller 6.

Claims (5)

1. a kind of hot-rolling of roll presses for paper industry, it is characterised in that including hollow buffer roll (1), be opened in buffer roll (1) one end Heating medium entrance (2) and be sheathed on the heating roller (8) of buffer roll (1) outside, opened up on the circumferential wall of the buffer roll (1) There are some spray orifices (5), the inwall of the buffer roll (1) is provided with some row's Buffer Units (4), one end of the heating roller (8) It is provided with Crude product input (3).

2. the hot-rolling of a kind of roll presses for paper industry according to claim 1, it is characterised in that be arranged outside the heating roller (8) There is polytetrafluoroethylene (PTFE) roller (6).

A kind of 3. hot-rolling of roll presses for paper industry according to claim 1, it is characterised in that Buffer Unit described in each row (4) diameter parallel with the buffer roll (1), Buffer Unit (4) increases successively including some radical lengths described in each row Buffer board (401).

4. the hot-rolling of a kind of roll presses for paper industry according to claim 3, it is characterised in that each spray orifice (5) Be provided with least one piece of buffer board (401) on the buffer roll (1) inwall of both sides, the buffer board (401) towards The inward-facing depression of the heating medium entrance (2) forms guiding gutter (402).

A kind of 5. hot-rolling of roll presses for paper industry according to claim 1-4 any one, it is characterised in that the heating roller (8) inwall is tiltedly installed with some deflectors (7).