CN1648336A

CN1648336A - Device for producing paper web

Info

Publication number: CN1648336A
Application number: CN 200410031204
Authority: CN
Inventors: 克劳斯·巴特尔马斯; 海因茨·巴特尔马斯
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-20
Filing date: 2004-01-20
Publication date: 2005-08-03

Abstract

The present invention discloses a kind of paper web making system. The paper web making system includes at least one end-less copper net moving on the load bearer and guide roller, paper pulp supplier applying paper pulp onto the copper net, aspirator and ceramic scraper laid along the end-less copper net, valve controlled device to applying cooling agent, especially water, onto the copper net and the scraper, and at least one temperature sensor formed with partial scrapers and connected to display or control unit.

Description

Produce the equipment of paper web

Technical field

The present invention relates to the system of a kind of manufacturing paper web (paper web), this system comprises: at least one endless wire, this copper mesh load bear with guide roller on move; Paper pulp is applied to device on the above-mentioned endless wire; Aspirator along the endless wire layout; With ceramic scraping blade.Selectively, this system can also comprise such device, this device by valve control with cooling agent particularly water be applied on endless wire and the scraping blade.

Background technology

The device systems of this manufacturing paper web of prior art has at least one endless wire (sieve), this copper mesh load bear with guide roller or deflection roll on move.Paper pulp or stock suspension comprising 1% solid constituent and 99% water, are sprayed onto by nozzle on the whole width of copper mesh.This copper mesh moves at suction box and the last speed with 2500 meters/minute of scraper (scrapers), and described scraper promptly is scraping blade (wiperstrips).As a result, the water that is included in the paper pulp is excluded.

Therefore, when production run began or produces interruption, copper mesh moved on metal forming, and does not have paper pulp on the metal forming, and fricative heat then can't dissipate between copper mesh and the metal forming.This rubbing action can occur in the suction box section especially, at this section, copper mesh since swabbing action be forced on the metal forming in the suction box.Especially, this situation often appears at such system, and the paper pulp of this system is between two copper mesh, owing to be two copper mesh, swabbing action is bigger, and produces bigger contact pressure thus.Similarly, the result as copper mesh is out of shape on the suction box of bending produces the extra pressure that acts on the metal forming, and by this pressure, frictional force between copper mesh and the metal forming and consequent heat increase sharply.Because the temperature that is caused by these heat can reach a few Baidu Celsius, this can cause occurring the risk that metal forming is damaged.When in a single day paper pulp is sprayed onto on the copper mesh subsequently, metal forming is sharply cooled off, the result, and metal forming can be damaged or damage similarly.

Unfavorable for fear of these, well-known method is:

In this system, provide nozzle, utilize nozzle that water is sprayed onto on copper mesh and the metal forming, in this way, can when production run begins or produces interruption, metal forming be cooled off.Therefore but this known measure can not meet the demands, because it is irrelevant with working condition to finish the cooling of metal forming, therefore, can such situation occur at ceramic blade: temperature rising and same overheated.For example, because the mistake setting of swabbing action can cause quite high friction between copper mesh and metal forming.Simultaneously, the water that can aspirate from paper pulp can not be finished desired cooling effect very little, and the result equally can produce unallowed heat in the metal forming.So, in case nozzle is opened, owing to the unexpected cooling to metal forming, the danger that extra ceramic blade damages or destroys will appear.

Summary of the invention

Therefore, one object of the present invention is to provide a kind of paper manufacture equipment, and this equipment can overcome device and the above-mentioned defective that exists of this class methods up to now.

Other purpose according to before addressing in this consideration the invention provides a kind of equipment of making paper web, and this equipment comprises:

The endless wire that a plurality of guide rollers and at least one move on guide roller;

Device for copper mesh supply paper pulp;

Along the aspirator of endless wire layout, and a plurality of ceramic blade of scraping copper mesh.At least one scraper comprises temperature sensor, and this sensor has the output that is connected with display unit or control module.

In other words, at least some scrapers or scraping blade are formed with at least one temperature sensor, and the output of these temperature sensors is connected with display unit or control module.And, the output of control module preferably with cooling agent is sprayed onto copper mesh and scraper on the control valve of device be connected.

Supplementary features of the present invention are that coolant supply system comprises valve control water supply system.

Another supplementary features of the present invention are that coolant supply system comprises a plurality of control valves, and a plurality of outputs of control module are connected with these control valves, thereby cooling water is sprayed onto on copper mesh and the scraper.

The output of control module preferably is connected with control valve, and these control valves are associated with aspirator, perhaps the output of control module with apply paper pulp and be connected to the device on the copper mesh.In a preferred embodiment, aspirator has at least one ceramic blade, and be formed with at least one temperature sensor, the output of this sensor is connected with the control valve of device by control module, this device is associated with corresponding suction box again, is used for cooling agent is applied to copper mesh and metal forming.

Utilize temperature sensor, can measure and show the temperature that in metal forming, produces owing to frictional heat, and therefore on this Fundamentals of Measurement, at first can reach applying the device control of cooling agent, secondly to the control of the device that plays water sorption, and can control the paper pulp streamer at least one copper mesh.

Further feature of the present invention is illustrated in the claims.

Though the present invention is illustrated at this, and to make the system form specific descriptions of paper web, but the present invention is not restricted to shown details, and therefore the change of various changes and structure can not break away from main idea of the present invention, and all in the scope that claim is stated.

Description of drawings

Structure of the present invention and method of operating, and other purpose wherein and advantage can understand by back the description of specific embodiment and connection with figures are read better, in the accompanying drawing:

Fig. 1 is a system schematic of the present invention.

Fig. 2 is the local longitudinal sectional view that is formed with the ceramic blade of temperature sensor.

Fig. 2 A is formed with the transverse sectional view of the ceramic blade of temperature sensor.

Fig. 3 is the suction box cutaway view with scraper of Fig. 2 and Fig. 2 A.

The specific embodiment

Now in detail with reference to the accompanying drawings, at first particularly Fig. 1 has wherein shown the equipment of making paper web 10 among Fig. 1.This device systems has two endless wires 1 and 2 (wire screens), and this copper mesh bears with

guide roller

11 and 21 in a plurality of load and moves in a certain direction.Driven roller 11a and 21a, thus endless wire 1 and 2 is moved with 2500 meters/minute speed circulation.By two first guide rollers 11 on the moving direction and 21 together, and these two guide rollers are assigned to device 3, paper pulp are applied on the copper mesh so that install 3 with endless wire 1 and 2 guiding.The paper pulp that comprises 1% solid constituent (especially cellulose) and 99% water is introduced between two copper mesh 1 and 2, and has filled up their whole width.

On two copper mesh 1 and 2 directions that move, arranging two

suction boxs

41 and 42 respectively, and two groups of scrapers 44.

Suction box

41 and 42 comprises scraper similarly.In addition, for

suction box

41 and 42 is assigned

nozzle

61 and 62, utilize nozzle, cooling agent particularly water can be directed onto on two copper mesh 1 and 2, and also can be sprayed onto on the metal forming of suction box 41 and 42.In the route that copper mesh 2 moves, in deflection roll 11 or 21 (both are identical) afterwards, for copper mesh 2 has distributed nozzle 63 again, and copper mesh 2 moves through the suction box 43 that comprises scraper again.The paper web 10 that forms between two copper mesh 1 and 2 promotes by deflection roll 10a and leaves second copper mesh 2, and is directed on compression set 12 and the drying device 13, is wound to form spool 14 then.

Be described as follows with reference to figure 2, Fig. 2 A and Fig. 3: be arranged in

suction box

41,42 and 43 and and dispose at least one temperature sensor, can utilize these scrapers of these sensor measurements temperature separately by the scraper that ceramic material is made.The output of these temperature sensors is connected to evaluation unit 40 by line 41a, 42a and 43a.Similarly, scraper group 44 also can dispose temperature sensor.

The output of evaluation unit 40 is connected with control module 70 by line 40a.Output 71a, the 72a of control module 70 and 73a are connected with 73 with control valve 71,72 respectively, these three control valves are associated with

nozzle

61,62 and 63 respectively again, these three valves are arranged in pipeline 60, and pipeline 60 leads to

nozzle

61,62 and 63, and these three nozzles are used for particularly water of ejected coolant.Other three output 81a, the 82a of

control module

70 and 83a are connected with 83 with control valve 81,82 respectively, and these three valves are arranged in vacuum pipeline 80, and this pipeline leads to

suction box

41,42 and 43.

Another output 30a of control module 70 is connected with valve 31, and this valve is arranged in supply pipeline 30, and this pipeline is connected with device 3, and device 3 is used for paper pulp is applied to copper mesh.

Scraper or metal forming 51 shown in Fig. 2 and Fig. 2 A comprise loading plate 50, and the upper end of this plate is installed with a plurality of ceramic wafers 53.Loading plate 52 has groove, and temperature sensor 54 is housed in groove, and its sensing element 55 is arranged in one of them ceramic wafer 53.The measured value that sensing element 55 is measured is by pipeline 56 outputs.

Used temperature sensor is thermocouple preferably, and this thermocouple to have such material right: Fe-CuNi and DIN 43 710, Cl.2 or NiCr-Ni and DIN EN 60 584, Cl.2.And, also can use RTD and DIN IEC 751.

Suction box 41 as shown in Figure 3.As shown in FIG., suction box is divided into two vacuum area 41b and 41c, and they have different swabbing actions respectively.A plurality of scrapers 51 with temperature sensor are arranged in suction box 41.

The operating process of this equipment is as described below:

Paper pulp is by between device two copper mesh 1 of 3 inputs and 2.Utilization is formed with the

suction box

41,42 and 43 and scraper group 44 of scraper 51, and the water that is included in the paper pulp can be extracted out from paper pulp.So, just produce paper web 10, this paper web breaks away from copper mesh subsequently and is further processed.

Because these are known technology, can not describe in further detail at this.

The temperature sensor 54 that utilizes the ceramic blade 51 of

suction box

41,42 and 43 to be comprised, can measure because copper mesh 1 and 2 with scraper 51 between friction and the temperature that on scraper, produces, and can be in evaluation unit 40 these temperature of evaluation.Utilization is the output of 70 control signal from evaluation unit 40 to control module, can at first be arranged in the valve 71,72 and 73 of water supplying pipe line 60 by pipeline 71a, 72a and 73a control, this pipeline 60 and

nozzle

61,62 are connected with 63, secondly control is arranged in the valve 81,82 and 83 of vacuum pipeline 80, and this pipeline 80 connects

suction box

41,42 and 43.Via valve 71,72 and 73, be used for copper mesh 1 and 2 and the cooling agent of scraper 51 particularly just applying of water can control.As a result, can at first avoid the overheated of ceramic blade 51, next avoids the anxious damage effect that increases of temperature.By

control suction box

41,42 and 43 swabbing action, also can avoid copper mesh 1 and 2 with scraper 51 between friction, so can similarly control by fricative heat.These two kinds of measures can be implemented simultaneously, also can select a utilization.In addition, also can be by control module 70 control paper pulp from installing 3 releases on copper mesh 1 and 2.This is a superior part of the present invention, because under the overheated situation of metal forming, the temperature that is caused by paper pulp when not having paper pulp to discharge is anxious to be increased and can be prevented.

Therefore, provide a kind of system here, can monitor and control the temperature that ceramic blade produces, therefore can avoid because the damage overheated and ceramic blade that chilling causes by this system.

Therefore, it is very important that each in this system at least some ceramic blades all is formed with at least one temperature sensor, like this, utilizes these temperature sensors can measure temperature in the metal forming.Measured temperature can be imported into display unit, so can be by the supply of hand-guided cooling agent and/or the swabbing action of suction box, and can control the release of paper pulp.And these measured values also can be imported into control module, like this, can be to the swabbing action of the supply of cooling agent and/or suction box and paper pulp be discharged into stroke control adjustment.

Claims

1. equipment of making paper web comprises:

A plurality of guide rollers;

The endless wire that at least one moves on described guide roller;

Device for described copper mesh supply paper pulp;

Aspirator along described copper mesh layout;

The ceramic blade that comprises at least one scraper, and this scraper comprises at least one temperature sensor, this sensor has an output that is connected with display unit or control module.

2. equipment as claimed in claim 1 wherein, also comprises control module, and this control module is connected with the described output of described temperature sensor.

3. equipment as claimed in claim 1 wherein, also comprises coolant supply system, and this system is used for cooling agent is applied to described copper mesh and described scraper.

4. equipment as claimed in claim 3, wherein, described coolant supply system comprises valve control water supply system.

5. equipment as claimed in claim 4, wherein, described coolant supply system comprises a plurality of Controlled valves, and a plurality of outputs of control module are used to apply cooling agent and are connected with Controlled valve on the described scraper to described copper mesh with described.

6. equipment as claimed in claim 2, wherein, described aspirator comprises the control valve that is connected with each output of described control module.

7. equipment as claimed in claim 2, wherein, described control module has the output that is connected with described device, and this device is given copper mesh with supply pulp.

8. equipment as claimed in claim 2, wherein, described aspirator comprise described at least one be formed with the ceramic blade of at least one temperature sensor, described temperature sensor comprises the output that is connected with each control valve of cooling agent feedway by described control module, this cooling agent feedway is associated with corresponding suction box, and cooling agent is applied on described copper mesh and the described scraper.