CN1035147A

CN1035147A - Press device of paper-making machine

Info

Publication number: CN1035147A
Application number: CN 88100618
Authority: CN
Inventors: 宋大兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-02-12
Filing date: 1988-02-12
Publication date: 1989-08-30

Abstract

The design belongs to press device of paper-making machine, and a precompressed dancer rools is set before the pressure roller of plain press device, the drainage ditch that a diversion plate is set before the lower compression roller nip and links.Holding paper felt and l Water Paper tightened and made it to hold on the pressure roller by the precompressed dancer rools before entering squeezing.Adopt the design's device can prevent to produce and press the stain phenomenon.

Description

Press device of paper-making machine

The design belongs to the device that the paper machine press section is regulated pressure.

In common plain-barreled roll squeezing, the water in the l Water Paper can only see through the woollen blanket diffluence to the direction opposite with the woollen blanket traffic direction.Water velocity distance very high, that flow through woollen blanket is also long, therefore produces higher hydraulic pressure and bigger pressure ladder change.If wet web strength is big inadequately, embossing will occurs and promptly press the stain phenomenon.Steep in order to prevent to produce to press, the common practice is to increase glazing felt to make the l Water Paper clad can, and l Water Paper is clipped between the upper and lower woollen blanket by squeezing.It is the rotating device that has increased by a cover glazing felt that there is one of shortcoming in this measure, makes equipment complicated, the running cost height.Another shortcoming is that rough surface is all exerted pressure on the paper web two sides through woollen blanket.

The design's purpose is the pressing device that proposes a kind of new construction, can have the anti-preferably stain performance of pressing without top felt, is beneficial to strengthen the pressure of squeezing, improves water separation capability.

Present design is to set up one to give the pressure dancer rools before upper and lower pressure roller, and the diversion plate is arranged before the nip of lower compression roller, diversion plate lower link drainage ditch.

The design's principle is to utilize to give to press dancer rools to make to hold the paper woollen blanket and l Water Paper was squeezed earlier before entering squeezing, utilizes to squeeze earlier the measure of afterwards pressing and improve the dehydrating effect of squeezing and avoid the generation pressure to steep phenomenon.

The design's characteristics and advantage are to press dancer rools to replace top felt and rotating device thereof with giving, and device structure is simple, and running cost is low.Second characteristic and advantage are the simple squeezing principles of dewatering Principle replacement of afterwards pressing with squeezing earlier, can improve dewatering efficiency and prevent pressure and steep.The 3rd characteristic and advantage are to go up pressure roller l Water Paper is had the press polish effect.

The design's embodiment is as shown in drawings:

Fig. 1 is the design's a fundamental diagram

Fig. 2 is common plain-barreled roll press dewatering schematic diagram.

Fig. 3 is the application schematic diagram of the design in paper machine.

Last pressure roller 1, l Water Paper 2 holds paper woollen blanket 3, and lower compression roller 4 gives and presses dancer rools 5, water tumbler 6, water pouring 7, diversion plate 8, drainage ditch 9.

In conjunction with the embodiments the design further is illustrated.

Accompanying drawing 2 takes from that institution of higher education light industry specialty teaching material " pulp and paper industry machinery and equipment " Huanan (South China) Polytechnic College on probation, Tianjin Light Industry College compile in collaboration with, in November, the 1981 front page first impression of light industry publishing house, the 195th page.The various measures of steeping about the mechanism and the anti-pressure of press dewatering over year surplus in the of 30 in this teaching material, have been summarized.Press dewatering only limits to utilize the squeezing effect between the pressure roller in the argumentation of this teaching material.The design has broken through this traditional understanding of following for many years.Accompanying drawing 1 is the design's dewatering Principle signal.Elder generation was through the stage of an extruding before l Water Paper entered squeezing, and what form extruding condition is to give pressing dancer rools 5, mobile dancer rools 5 can change woollen blanket and the squeezed state of l Water Paper before entering squeezing.Extruding is to realize like this to the dehydration role.Woollen blanket 3 and l Water Paper 2 are conditioned roller 5 and tighten, and begin to be squeezed, and water gravitate when extruding in l Water Paper and the woollen blanket contacts pressure roller 1 place, back at paper web and can produce water tumbler 6.When woollen blanket 3 and l Water Paper 2 touch and surround when going up pressure roller 1 surface, because before the effect of extruding and gravity makes moisture content concentrate in the woollen blanket 3 and be thrown to lower compression roller 4 nips, formation water pouring 7.Water in the l Water Paper that this moment and last pressure roller attach has been extruded in the woollen blanket and how has accumulated water pouring 7, the mass dryness fraction of l Water Paper obviously increases, therefore paper web can not produce after entering nip P and press the stain phenomenon owing to attach with last pressure roller.Can guide water pouring 7 to get rid of at pre-installed diversion plate 8 of the nip of lower compression roller 6 and drainage ditch 9 unobstructedly.The design has tangible advantage than traditional squeeze dehydration unit.

The design can be suitable for the press section of various paper machines.Fig. 3 is a kind of situation that the design is set in paper machine,

With the design with on the paperboard machine, can be on following type the roll shaft of each corresponding specification of adapted:

Series I: the clean wide 1092mm of paper web, gauge 1800mm

Type: 4 cylinder single cylinders are multi-functional, produce 4～5 tons daily

Adapted: give and press the long 1180mm of dancer rools diameter 119mm

The long 1180mm of upper press diameter 400mm

The long 1180mm of lower press diameter 300mm.

Type: 15 tons of 6524 type cylinder machine daily outputs

Adapted: give pressing and transfer the long 1180mm of roller diameter 119mm

The long 1180mm of upper press diameter 400mm

The long 1180mm of lower press diameter 215mm.

Type: lack 13～15 tons of net Multi-Cylinder Diesel Engine daily outputs more

Give and press the long 1200mm of dancer rools diameter 119mm

The long 1200mm of upper press diameter 500mm

The long 1200mm of lower press diameter 360mm.

Series II: the clean wide 1575mm of paper web, gauge 2400mm

Type: many cylinders multi-cylinder, produce 13～15 tons daily

Adapted: give and press the long 1300mm of dancer rools diameter 119mm

The long 1300mm of upper press diameter 400mm

The long 1300mm of lower press diameter 360mm

Type: many cylinders multi-cylinder, produce 10～13 tons daily

Adapted: give and press the long 1300mm of dancer rools diameter 119mm.The long 1300mm of last upper press diameter 400mm,

The long 1300mm of lower press diameter 360mm.Type: lack the net Multi-Cylinder Diesel Engine more, produce 25～30 tons of adapteds daily: give and press the long 2000mm of dancer rools diameter 119mm.

The long 2000mm of upper press diameter 500mm

The long 2000mm of lower press diameter 360mm.

Claims

1, a kind of press device of paper-making machine, comprise and hold paper woollen blanket, upper press, lower press, it is characterized in that the diversion plate being arranged before pressing the nip of dancer rools at lower compression roller holding to have on the position of paper woollen blanket before entering upper and lower pressure roller to give, the diversion plate connects drainage ditch.

2, according to the described pressing device of claim 1, it is characterized in that giving pressure dancer rools diameter is 119mm, long 1180mm; Upper press diameter 400mm, long 1180 mm; The long 1180mm of lower press diameter 300mm.

3,, it is characterized in that giving pressure dancer rools diameter 119mm, long 1180mm, the long 1180mm of the long 1180mm lower press of upper press diameter 400mm diameter 215mm according to the described pressing device of claim 1.

4,, it is characterized in that giving and press dancer rools diameter 119mm, long 1200mm, upper press diameter 500mm, long 1200 mm, lower press diameter 360mm, long 1200mm according to the described pressing device of claim 1.

5,, it is characterized in that giving pressure dancer rools diameter 119mm, long 1300mm, the long 1300mm of upper press diameter 400mm, lower press diameter 360mm, long 1300mm according to the described pressing device of claim 1.

6,, it is characterized in that giving pressure dancer rools diameter 119mm, long 2000mm, the long 2000mm of the long 2000mm lower press of upper press diameter 500mm diameter 360mm according to the described pressing device of claim 1.