CN109653018A - A kind of mica paper drying cylinder component - Google Patents

Abstract

The invention discloses a kind of mica paper drying cylinder components, including drying cylinder and the circulation line being connected with drying cylinder, it is characterized in that, the drying cylinder is the hollow cylinder made of steel, especially forged steel or cast steel, the hollow cylinder both ends are by being equipped with oil pocket and being closed, rotary joint is connected by pipeline in the middle part of drying cylinder, while rotary joint forms circulation line with oil circulating pump and electrothermal chamber and connect；And using conduction oil as heat-carrying agent in the circulation line and the hollow cylinder, simultaneously, it further include having the solid-state relay of an oil circulating pump and a power adjustable, and pipeline is separately connected the both ends of high tank between rotary joint downstream line and oil circulating pump and electrothermal chamber on circulation line.Present invention alleviates labor intensity, improve production efficiency, energy conservation and environmental protection.

Description

A kind of mica paper drying cylinder component

Technical field:

It is in particular a kind of for drying the mica paper dryer of mica paper the present invention relates to the drying equipment of dry fiber web Component.

Background technique:

In the prior art, in process for mica paper, the paper web of mica paper in forming area by Fibrous suspension formed and first in roll squeezer or shoe press mechanically dehydration until the specific index of aridity, with Afterwards using heated drying to the final index of aridity.

And the process of heated drying is mainly realized by drying cylinder, this drying is manufactured by steel, especially forged steel or cast steel, Be made of cylindrical parts, be mainly used for the drying of paper web, tissue paper web or other fiber webs, thus also usually by with Mica paper is dried in mica paper manufacturing field.This cylindrical dryer is closed in two side ends, and steaming is consequently formed Steam chest.It uses condensable gaseous state heat-carrying agent (most often using steam as heat medium) to heat outside the vaporium, is then introduced into In vaporium, undergone phase transition by radiating in fiber web drying process, and condensate liquid is consequently formed.Under common machine speed, The condensate liquid is since centrifugal force is in the condensation pendular ring being closed in drum shell, and paper web, tissue paper web or other fibers Web contacts hot drying cylinder by wrapping mode and realizes drying by the energy of the steam release of condensation inside drying cylinder.But This to there is a problem that drying efficiency is not high by way of heating to drying cylinder steam medium, energy-efficient performance is poor, and Steam is easy leakage, and the general steam that generates can be consumed lot of materials, be discharged bulk gas, meeting by the way of combustion heating Environment is affected greatly.

Summary of the invention:

Technical problem solved by the invention is to provide a kind of mica paper drying cylinder component, to solve in above-mentioned technical background Defect.

Technical problem solved by the invention is implemented with the following technical solutions:

A kind of mica paper drying cylinder component, including circulation line drying cylinder (1) and be connected with drying cylinder, which is characterized in that institute Stating drying cylinder is the hollow cylinder made of steel, especially forged steel or cast steel, and the hollow cylinder both ends are by being equipped with oil pocket (2) and carrying out Closing connects rotary joint (3) by pipeline in the middle part of drying cylinder, while rotary joint is followed with electrothermal chamber and oil circulating pump formation Ring piping connection；And using conduction oil as heat-carrying agent in the circulation line and the hollow cylinder, meanwhile, in circulation pipe Road further include have the solid-state relay of an oil circulating pump and a power adjustable, and rotary joint downstream line and circulation Pipeline is separately connected the both ends of high tank (7) between oil pump (5) and electrothermal chamber (6).

In the present invention, the dosage of the conduction oil is to fill up the drying cylinder of entire circulation line and 1/4~1/3 capacity Subject to.

In the present invention, the circulation line in the upstream line of access oil circulating pump and picks out solid-state relay A temperature sensor is all connected in downstream line, to supervise to the temperature conditions in circulation sections different in circulation line Control.Its control principle are as follows: electrical control cabinet starts oil circulating pump and heating agent conduction oil is driven circulation, oily from the fuel-displaced of oil circulating pump Mouth is successively by electric heating pack, rotary joint oil inlet, oil pocket to oil pocket outlet, the oil inlet of rotary joint center flowline and pump Mouthful.So constitute a closed-loop flow.Next heating system could be opened, because anti-dry and local temperature are excessively high, oil pump with Heater be provided with electrical interlocks, at this moment solid-state relay oil outlet temperature controller given starting voltage signal reach after, Start to export electric current to heat-generating pipe heating conduction oil, until oil temperature reaches setting operating temperature, the given of temperature controller is opened Dynamic voltage gradually decreases, and the output electric current of solid-state relay also slowly reduces, and heat-generating pipe heating power also becomes smaller therewith, that is, It says that solid-state relay is gradually closed when temperature is high, when temperature is low, just slowly opens, forever temperature automatic control in a temperature The operating temperature or so of controller setting provides given drying thermal energy to mica paper dry on drying cylinder is constantly transmitted to, and The setting temperature value according to the production technology and paper sheet thickness of mica paper to be dried determine, preferably 175 DEG C~180 DEG C.

Preferably, the hollow structure volume of the drying cylinder is 4.2m³, the pump power of the oil circulating pump is 7.5KW, and the general power of the solid-state relay is 180KW, including two groups or three groups independent controls and power is consistent Semiconductor thyristor is become as heating unit, solid-state relay by controlling the unlatching group number of heating unit to control its power Change.

Preferably, when conduction oil oil mass has consumption, oil is filled by high tank by filling oil pump (8), then by height Position oil groove passes through the pipeline that is connected thereto to corresponding position.

The utility model has the advantages that

1, a kind of mica paper drying cylinder component of the present invention carries out drying cylinder bucket face temperature using sensor technology and conduction oil Degree control, by thermally conductive oil temperature in temperature sensor acquisition system, and controls solid-state relay and heats to conduction oil, from And the operating temperature in drying cylinder bucket face is automatically controlled, sensor can carry out temperature automatic constant and avoid using artificial when steam The switch steam boiler air valve of not timing, alleviates labor intensity, improves production efficiency.

2, economical environment-protective, first, boiler in addition to fuel consumption greatly other than, it is also essential with water, with oil heating do not have to one drop Water, second, with boiler per tour will special fireman, oil oven heat automatically can be achieved it is unattended, environmental protection aspect without exhaust gas, Useless cigarette, discharge of wastewater.

It 3, is not in high temperature, the high pressure even danger of explosion because using the normal pressure method of operation.

4, long service life, maintenance cost and allowance for depreciation are low.

5, in terms of production scheduling, when supplying steam with boiler heat supplying, an equipment supplies whole paper machines.With oil cylinder heat supply Afterwards, whole respective independent heatings, reduce the passive situation of one Ting Quan factory of boiler shutdown, and personnel are not enough or when repair apparatus stops one When platform or more machines, corresponding heating equipment can be also shut off, but boiler is uncontrollable.

6, occupied space is few, and to place without particular/special requirement, pipeline path is short, sets up simple, complete machine installation, installation week Phase is short, without the installation of special commission installation company.

In conclusion substitute traditional boiler heat supplying with conduction oil heating system, although unit cost is slightly higher, from long-range From the perspective of, it will be environmentally friendly, safety is taken up an area, and manipulation, production scheduling and maintenance of equipment depreciation etc. account for, society Before benefit and economic benefit are much larger than transformation.

Detailed description of the invention:

Fig. 1 is concrete structure schematic diagram of the present invention

Specific embodiment:

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Conjunction is specifically illustrating, and the present invention is further explained.

Referring to a kind of mica paper drying cylinder component of Fig. 1, including drying cylinder 1 and the circulation line being connected with drying cylinder, feature It is, the drying cylinder is the hollow cylinder made of steel, especially forged steel or cast steel, and the hollow cylinder both ends are by being equipped with oil pocket 2 And closed, rotary joint 3, while rotary joint and electrothermal chamber and oil circulating pump shape are connected by pipeline in the middle part of drying cylinder It is connected at circulation line；And using conduction oil as heat-carrying agent in the circulation line and the hollow cylinder, meanwhile, it is following Endless tube road further includes having the solid-state relay of an oil circulating pump 5 and a power adjustable, and rotary joint downstream line Pipeline is separately connected the both ends of high tank 7 between oil circulating pump and electrothermal chamber 6.In an embodiment of the present invention, pass through baking Then conduction oil in the volume space of cylinder after injection heating is rotated by motor driven drying cylinder, so that the conduction oil after heating It is carried in the volume space of drying cylinder under the influence of centrifugal force and is attached to drying cylinder inner surface, and mica paper web is contacted by wrapping mode Drying cylinder body cylinder and drying is realized by the heat of conduction oil inside drying cylinder, and in order to obtain optimal drying effect and Least conduction oil use cost, the dosage of conduction oil is to fill up the drying cylinder volume of entire circulation line and 1/4~1/3 capacity Subject to space.

In addition, covered in right-hand end and staving bottom is provided with conduction oil feed inlet and conduction oil discharge port, it is thermally conductive Oil material mouth and conduction oil discharge port to the greatest extent are connect with circulation line, and recirculation pipe road is additionally provided with a pump power simultaneously For 7.5KW oil circulating pump and a solid-state relay, and the solid-state relay general power is 180KW, including two groups of independent controls And the consistent semiconductor thyristor of power as heating unit, solid-state relay by control the unlatching group number of heating unit come Control its changed power.

In addition, the upstream line in circulation line access oil circulating pump is respectively connected with an adjusting sensor, it is solid picking out It is respectively connected with a monitoring sensor in the downstream line of state relay, adjusts sensor and monitoring sensor is temperature sensing Device can be respectively provided with 175 DEG C as setting temperature value, when the temperature for adjusting sensor is lower than setting temperature in the two temperature sensors Value, then open solid-state relay and heat to conduction oil, until monitoring sensor reaches setting temperature value, then turns down solid-state relay The power of device, and with the continuous feedback adjustment solid-state relay power of variation for the detected value for adjusting sensor and monitoring sensor, Until it is stable in setting temperature value respectively to adjust sensor and monitoring sensor.

In addition, oil is filled into high tank by filling oil pump 8, then by high-order oil when conduction oil oil mass has consumption Slot passes through the pipeline that is connected thereto to corresponding position.

The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it is to be appreciated that the not thin above-described embodiment limitation of the present invention, and the above embodiments and description only describe this hairs Bright principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variations It all fall within the protetion scope of the claimed invention with improvement.The claimed scope of the invention is by appended claims and its waits Effect object defines.

Claims (8)

1. A mica paper drying cylinder assembly, comprising a drying cylinder (1) and a circulation pipeline connected with the drying cylinder, wherein the drying cylinder is a hollow cylinder made of steel, especially forged steel or cast steel , the two ends of the hollow cylinder are provided with oil chambers (2) and closed, and the rotary joint (3) is connected by pipelines in the middle of the drying cylinder, and the rotary joint is connected with the circulating oil pump and the electric heating chamber to form a circulating pipeline connection; The pipeline and the hollow cylinder use heat-conducting oil as a heat-carrying medium, and at the same time, a circulating oil pump (5) and a power-adjustable solid state relay are also included on the circulating pipeline, and the downstream pipeline of the rotary joint is connected with the circulating oil pump and electric heating. The pipes between the chambers (6) are respectively connected to both ends of the high oil tank (7). 2 . The mica paper drying cylinder assembly according to claim 1 , wherein the amount of the heat-conducting oil is based on the drying cylinder that fills 1/4 and 1/3 of the capacity of the entire circulation pipeline. 3 . 3. The mica paper drying cylinder assembly according to claim 1, wherein the circulating pipeline is connected with a temperature sensor on the upstream pipeline connected to the circulating oil pump and the downstream pipeline connected with the solid state relay, and the circulating pipeline is connected with a temperature sensor. In order to monitor the temperature in different circulation sections in the circulation pipeline. 4 . The mica paper drying cylinder assembly according to claim 1 , wherein the hollow structure volume of the drying cylinder is 4.2 m ³ , the pumping power of the circulating oil pump is 7.5 kw, and the solid state relay has a power of 7.5 kw. 5 . The total power is 180kw, including two or three groups of independently controlled heating units with the same power. The solid state relay controls the power change by controlling the number of heating units turned on. 5. The mica paper dryer assembly according to claim 4, wherein the solid state relay is a semiconductor thyristor. 6 . The mica paper dryer assembly according to claim 1 , wherein the high-level oil tank is further connected with an oil filling pump ( 8 ). 7 . 7. A temperature control method for a mica paper drying cylinder assembly, characterized in that the mica paper drying cylinder assembly of claim 3 is used for control, and the control method is: using an electrical control cabinet to start a circulating oil pump to drive the heat transfer oil to circulate the heat medium , the oil passes through the electric heating pack, the oil inlet of the rotary joint, the oil cavity to the oil cavity outlet, the central oil outlet pipe of the rotary joint and the oil inlet of the pump in sequence from the oil outlet of the circulating oil pump. This constitutes a closed-loop flow. Then the heating system can be turned on. Due to the prevention of dry burning and the local temperature being too high, the oil pump and the heater are electrically interlocked. At this time, the solid state relay starts to output current to The heating tube heats the heat transfer oil. When the oil temperature reaches the set working temperature, the given starting voltage of the temperature controller gradually decreases, the output current of the solid state relay also gradually decreases, and the heating power of the heating tube also decreases, that is It is said that when the temperature is high, the solid state relay is gradually closed, and when the temperature is low, it is slowly opened, and the temperature is always automatically controlled at about the working temperature set by a temperature controller, providing a given mica paper to the drying cylinder. dry heat. 8 . The temperature control method for the mica paper drying cylinder assembly according to claim 7 , wherein the set temperature value is 175-180° C. 9 .