CN206034183U - Fourdrinier machine's wet end device - Google Patents

Abstract

The utility model provides a fourdrinier machine's wet end device, including forming net and deflector roll, the lower surface of following forming net is equipped with breast roll, profiled sheeting, low vacuum water absorption case, high vacuum water absorption case and suction couch roll in proper order, and the forming net upper surface between its low or middle vacuum water absorption case and the high vacuum water absorption case still is equipped with one and places upside down the vacuum chamber, this inversion vacuum chamber encircles has a D type net, and the inversion vacuum chamber is passed to some of D type net, breast roll fixes on the support and connects the shake system. Adopt the technical scheme of the utility model, not only can solve to lean on at the wet end and freely dewater and the problem of the wet page upper surface moisture that pressure differential compression effect is difficult to to deviate from, effectively reduce the moisture content of wet page to having prevented well that the fleeces from gathering the phenomenon, having shown the quality that the degree of consistency of improving the paper promoted glasin paper, reduced disconnected paper phenomenon simultaneously, operation expense is low.

Description

A kind of wet end device of fourdrinier machine

Technical field

This utility model is related to pulp technology for making paper, and in particular to a kind of wet end device of fourdrinier machine.

Background technology

Lattice Racine paper papery ground is fine and close, uniform, has good internal bond strength and transparency, be make bar coded sticker, The common used material of adhesive sticker, adhesive tape or toughness industrial goods.It is mainly long by viscous shape bleached chemical that glassine paper is made at present Fiber pulp on high speed fourdrinier machine is carried out after net forming, dehydrate, enter back into top sizing, re-dry, moistening and The operations such as superpressure obtain finished product.Wherein wet end device is the major part of paper machine composition, and this part can be removed in paper pulp Most of moisture forms wet page paper.The high hydrability of fiber, longer length yet with paper pulp, the suspended state in online Between lower fiber, easily mutual collision interweaves, and fleeces occurs and is polymerized to a phenomenon, so as to there is dehydration difficulty, paper machine production The problems such as speed can not lift poor with sheet uniformity.

In prior art, a kind of fourdrinier machine wet end as disclosed in Chinese utility model patent 201520775882.9 Technology, sets gradually wet vacuum tank and dry vacuum case by the lower surface in forming net in the technical scheme, twice vacuum dehydration Realize the dehydration of paper pulp；Arrange ornamenting roller to ensure the uniformity of paper by the upper surface in forming net.Yet with paper pulp The poly- phenomenon of fleeces with certain thickness and in production process, only arranging water suction vacuum tank below paper pulp may make paper The upper surface of slurry still contains more moisture, and ornamenting roller also can only can improve sheet thickness to a certain extent, it is impossible to real Existing paper substantially uniformity.

Utility model content

The purpose of this utility model is to overcome shortcoming present in prior art, there is provided a kind of raising dewatering of pulp rate, Improve sheet uniformity, disconnected paper phenomenon is reduced so as to improve the wet end device of the fourdrinier machine of speed of production.

To achieve these goals, the technical solution adopted in the utility model is as follows：

A kind of wet end device of fourdrinier machine, including forming net and deflector roll, the lower surface along forming net is sequentially provided with breast Roller, dieplate, coarse vacuum suction box, fine vacuum suction box and suction couch roll, wherein coarse vacuum suction box and fine vacuum suction box Between forming net upper surface be additionally provided with one inversion vacuum tank；The inversion vacuum tank is surrounded with a D type net, and the one of D type nets Inversion vacuum tank is partially passed through, plays a part of to prevent l Water Paper page to be inhaled into vacuum tank.Breast roll is fixed on support and connects and shakes Vibrating system.

Further, shake system is arranged on the transmission side of breast roll and is connected with breast roll transmission side spindle nose by connecting rod, is led to Crossing transmission breast roll can carry out axially high-strength micro- slip, effectively prevent the fiber in paper pulp to be interweaved, the group of being polymerized to of wadding a quilt with cotton.

Further, the amplitude of breast roll is 18～25mm, and shake frequency is 200～250 times/min.

Further, there is between D types net and forming net the gap for passing through wet page paper enough.

Further, D types net makes to remain enough tension force during D type network operations with idler roller is arranged with.

Technical solutions of the utility model have the advantage that：

（1）Arrange between height suction flat box and be inverted vacuum tank, not only solve well in wet end by freely taking off Water and pressure reduction compression are difficult to the problem of the l Water Paper page upper surface moisture deviate from, and effectively reduce the moisture content of l Water Paper page, and And the D type nets through the inversion vacuum tank ensure that the l Water Paper page on forming net is not drawn into vacuum tank, so that production line can With continuous automatic running, improve production efficiency；

（2）Breast roll is connected with shake system, is played a part of high-strength microturbulent motion to the paper pulp at initial stage of surfing the Net, is prevented well The poly- phenomenon of fleeces, while significantly improving the quality of improving uniformity Ge Laxin paper of paper, reducing disconnected paper phenomenon also Be conducive to the dehydration of paper pulp, form the l Water Paper page of certain wet strength；

（3）Breast roll only carries out axial reciprocating vibration, little to wet end support and miscellaneous part vibrations, is conducive to extending wet end The service life of all parts, production line operation and maintenance cost are low.

Description of the drawings

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

Fig. 2 is the schematic diagram that shake system and breast roll connect.

Specific embodiment

The utility model will be further described below in conjunction with the accompanying drawings.

Referring to the drawings.This utility model includes forming net 3 and deflector roll 10, and the lower surface along forming net 3 is sequentially provided with breast roll 1st, dieplate 2, coarse vacuum suction box 4, fine vacuum suction box 8 and suction couch roll 9, wherein coarse vacuum suction box 4 are inhaled with fine vacuum 3 upper surface of forming net between water tank 8 is additionally provided with an inversion vacuum tank 5, can remove the water of wet page paper upper surface well Point, the moisture content of l Water Paper page is further reduced, paper quality is lifted.The inversion vacuum tank 5 is surrounded with a D types net 6, D types net 6 A part through be inverted vacuum tank 5 and be inverted vacuum tank 5 below forming net 3 maintain a certain distance, playing prevents wet Page is inhaled into the effect for being inverted vacuum tank 5.

Breast roll 1 is fixed on support and connects shake system 11.Shake system 11 is arranged on the transmission side of breast roll 1 and passes through Connecting rod 12 is connected with 1 transmission side spindle nose of breast roll, and after transmission, breast roll 1 can only carry out axially high-strength micro- slip.When breast roll 1 shakes When dynamic, the deposition paper pulp just surfed the Net can be vibrated therewith together, produce shear action with the relative serosity stablized above pulp layer, can To scabble the projecting point in pulp layer, and where filling up low-lying in pulp layer.Simultaneously reciprocal vibration can make the arrangement of fiber Direction and 3 traffic direction of forming net effectively prevent the fiber in paper pulp to be interweaved, the group of being polymerized to of wad a quilt with cotton in there is certain angle, rush Make thickness, the quantitative and even of paper web consistent, and improve the intensity of paper, while can also reduce disconnected paper phenomenon improves speed of production； And only axial motion is little to wet end support and miscellaneous part vibrations, reduces operation and maintenance cost low.Especially, breast roll 1 Amplitude be 18～25mm, shake frequency be 200～250 times/min.

Gap between D types net 6 and forming net 3 passes through can wet page paper；D types net 6 is supporting to be additionally provided with idler roller 7, makes D Type net 6 remains enough tension force when running, and will not affect wet page paper in forming net 3 because prolonged operation occurs lax On advance.

It should be pointed out that embodiment of the present utility model is described above.However, the technical staff of art technology should manage Solution, this utility model are not restricted to the described embodiments, and described in above-described embodiment is to illustrate principle of the present utility model, On the premise of without departing from this utility model scope, this utility model also has various changes and improvements, and these changes and improvements are all Fall in the range of claimed this utility model.

Claims (5)

1. the wet end device of a kind of fourdrinier machine, including forming net and deflector roll, along the lower surface of forming net be sequentially provided with breast roll, Dieplate, coarse vacuum suction box, fine vacuum suction box and suction couch roll, it is characterised in that the coarse vacuum suction box and fine vacuum Forming net upper surface between suction box is additionally provided with an inversion vacuum tank；The inversion vacuum tank is surrounded with a D type net, described A part for D type nets passes through the inversion vacuum tank；The breast roll connects shake system.

2. the wet end device of a kind of fourdrinier machine as claimed in claim 1, it is characterised in that the shake system is arranged on The transmission side of the breast roll is simultaneously connected with the breast roll transmission side spindle nose by connecting rod.

3. the wet end device of a kind of fourdrinier machine as claimed in claim 2, it is characterised in that the amplitude of the breast roll is 18 ～25mm, shake frequency are 200～250 times/min.

4. the wet end device of a kind of fourdrinier machine as claimed in claim 1, it is characterised in that the D types net and the molding There is between net the gap for passing through wet page paper enough.

5. the wet end device of a kind of fourdrinier machine as described in claim 1 or 4, it is characterised in that the D types net is with being arranged There is idler roller, make during the D types network operation, to remain enough tension force.