CN219385792U - MB dewatering equipment of high-speed net paper clamping machine - Google Patents

Abstract

The MB dehydration equipment of the high-speed net clamping paper machine comprises an upper net loop and a lower net loop which are arranged up and down oppositely, wherein the lower net loop comprises a lower net, a plurality of lower driving rollers and a dehydration assembly, the lower net is sleeved on the outer side surfaces of the lower driving rollers, and the dehydration assembly is arranged on the inner side surface of the lower net at the top; the dehydration component comprises two fixed gravity dehydration tanks, six low vacuum dehydration tanks, five medium vacuum dehydration tanks, two high vacuum dehydration tanks and a high vacuum transfer tank which are sequentially arranged from right to left. The utility model solves the problem of production caused by primary problems such as pulp rubbing, improper vacuum allocation, vacuum leakage, speed difference and the like of MB equipment and a core net, and reduces equipment maintenance and replacement cost; and can stop the slurry sticking and throwing phenomenon of MB equipment. The utility model has strong practicability and has stronger popularization significance.

Description

MB dewatering equipment of high-speed net paper clamping machine

Technical Field

The utility model relates to the technical field of papermaking, in particular to MB dewatering equipment of a high-speed net clamping paper machine.

Background

The current commonly used paper web solutions usually comprise a former and a dewatering area, which are formed and dewatered by various forming members and dewatering elements, the primary purpose of which is to create pressure and pressure pulsations in the fibrous layer during the forming process, by means of which pressure and pulsation the dewatering of the paper web during the forming is promoted, which also improves the forming of the paper web. As shown in fig. 1, the dewatering elements on current large paper machines typically include a combination of high vacuum transfer box 112 with curved panels, pressure shoe 113, medium vacuum dewatering box 114, low vacuum dewatering box 115, liftable gravity dewatering box 116, MB dewatering element 117, gravity transfer box 111, and the like.

However, with the continuous optimization and continuous upgrading of other parts of the paper machine, under the condition of continuous increase of production cost, the paper machine exceeds 110 m/min on the basis of the original maximum design speed, and the maximum speed reaches 810 m/min at present. Therefore, the matching of the original design core layer net table and MB dehydration forming equipment can not meet the production conditions, the phenomenon of slurry sticking and slurry throwing of MB equipment can easily occur in the high-speed production process, and further the production paper breakage is caused, so that the improvement of the production speed is seriously influenced.

Disclosure of Invention

To this end, the object of the present utility model is to provide a high-speed netbook machine MB dewatering device.

The MB dehydration equipment of the high-speed net clamping paper machine comprises an upper net loop and a lower net loop which are arranged up and down oppositely, wherein the lower net loop comprises a lower net, a plurality of lower driving rollers and a dehydration assembly, the lower net is arranged on the outer side surfaces of the lower driving rollers, and the dehydration assembly is arranged on the inner side surface of the lower net at the top; the dehydration component comprises two fixed gravity dehydration tanks, six low vacuum dehydration tanks, five medium vacuum dehydration tanks, two high vacuum dehydration tanks and a high vacuum transfer tank which are sequentially arranged from right to left.

Further, the panel on the high vacuum transfer box is a high vacuum transfer box panel without arc.

Further, the fixed gravity dewatering box is provided with a wiper plate which is obliquely arranged at a certain angle.

Further, a medium vacuum steam-water separator is connected to the medium vacuum dewatering tank;

further, a high-vacuum steam-water separator is connected to the high-vacuum dewatering box.

Further, the net feeding loop wire comprises a plurality of upper driving rollers and a net feeding sleeve, and the net feeding sleeve is arranged on the outer sides of the upper driving rollers.

In summary, the utility model solves the problem of production caused by improper pulp rubbing, vacuum blending, vacuum leakage, speed difference and the like of MB equipment and a core net, and adopts the high vacuum transfer box without an arc panel, thereby achieving reasonable dehydration and improving the dryness of paper web during high-speed operation. In addition, the number of the low vacuum dewatering boxes and the number of the medium vacuum dewatering boxes are increased, so that the dewatering process of free water in slurry can be more reasonably adjusted, the slurry surface of the slurry is more uniformly dewatered, and the dewatering capacity of a forming area can be improved. The original gravity transfer box and the original pressurizing boot equipment are changed into a high-vacuum dewatering box, so that part of combined water is sucked in high vacuum, and the dryness is improved. In addition, the utility model can remove the traditional MB equipment, and reduce the equipment maintenance and replacement cost; and can stop the slurry sticking and throwing phenomenon of MB equipment. The utility model has strong practicability and has stronger popularization significance.

Drawings

FIG. 1 is a schematic diagram of a high-speed wire machine MB dewatering apparatus according to the present utility model;

fig. 2 is a schematic structural view of a conventional dewatering apparatus of a wire machine.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

As shown in fig. 1, the utility model provides a high-speed web-clamping machine MB dewatering device, which comprises an upper web loop 10 and a lower web loop 20 which are arranged up and down oppositely, wherein the upper web loop 10 comprises a plurality of upper driving rollers 11 and an upper web 12, and the upper web is sleeved outside the upper driving rollers. The lower net loop 20 comprises a lower net 21, a plurality of lower driving rollers 22 and a dewatering assembly 30, wherein the lower net 21 is sleeved on the outer side surfaces of the lower driving rollers 22, and the dewatering assembly 30 is arranged on the inner side surface of the lower net 21 at the top.

The dewatering assembly 30 comprises two fixed gravity dewatering boxes 31, six low vacuum dewatering boxes 32, five medium vacuum dewatering boxes 33, two high vacuum dewatering boxes 34 and a high vacuum transfer box 35 which are arranged in sequence from right to left. The upper surface of the high vacuum transfer box 35 is a panel 351 without radian, the fixed gravity dewatering box 31 is provided with a wiper 311, and the wiper 311 is at an angle of 2 °. A middle vacuum steam-water separator is connected to the middle vacuum dewatering box 33; the high vacuum dewatering box 34 is connected with a high vacuum steam-water separator.

Compared with the traditional structure, the utility model adopts the high vacuum transfer box 35 without an arc panel, so that the structure can achieve reasonable dehydration and improve the dryness of the paper web during high-speed operation. In addition, the utility model reduces the number of the low vacuum dewatering boxes 32 and increases the number of the medium vacuum dewatering boxes 33, wherein the medium vacuum dewatering boxes 33 are connected with a medium vacuum steam-water separator (not shown), so that the dewatering process of free water in slurry can be more reasonably adjusted, the slurry surface can be more uniformly dewatered, and the dewatering capacity of a forming area can be improved. The original gravity transfer box 111 and the pressurizing boot 113 are changed into the high-vacuum dewatering box 34, so that part of combined water is sucked in high vacuum, and the dryness is improved. In addition, the utility model can remove the traditional MB equipment, and reduce the equipment maintenance and replacement cost; and can stop the slurry sticking and throwing phenomenon of MB equipment.

In summary, the utility model solves the problem of production caused by the problems of improper pulp rubbing, vacuum blending, vacuum leakage, speed difference and the like of MB equipment and a core net, and can produce the following benefits: (1) the profit is improved; the device is estimated to reduce paper breakage by about 100 hours per year, and can increase productivity by 100×50 tons=5000 tons. If calculated as an average of 500 yuan per ton of paper, then 250 ten thousand yuan per year can be increased for the company. (2) And the electric energy consumption is saved: 35kw 24 hours 340 days 80% + 0.66 yuan = 152.9 ten thousand yuan. (3) Saving the forming net: 8 MB networks were used in the year, each 2.5 ten thousand yuan, 8 x 2.5=20 ten thousand yuan. (4) MB hanging box panel 14+1 savings: each set is 15 ten thousand, one set is replaced every three years, and 15/3=5 ten thousand yuan. (5) Saving mechanical spare parts: can save more than 30 ten thousand of the materials each year. (6) Medicine net protection paper saving: paper can be saved by 5-6 ten thousand per year. After transformation, the profit of the company is improved and more than ten thousand yuan is saved for each year. The utility model has strong practicability and has stronger popularization significance.

The above examples illustrate only one embodiment of the utility model, which is described in detail and is not to be construed as limiting the scope of the utility model, it being understood that variations and modifications can be made by those skilled in the art without departing from the spirit of the utility model, which is within the scope of the utility model, and the appended claims shall therefore be construed as defining the scope of the utility model.

Claims (6)

1. A high-speed net paper machine MB dewatering equipment, its characterized in that: the device comprises an upper net loop and a lower net loop which are oppositely arranged up and down, wherein the lower net loop comprises a lower net, a plurality of lower driving rollers and a dehydration assembly, the lower net is arranged on the outer side surfaces of the lower driving rollers, and the dehydration assembly is arranged on the inner side surface of the lower net at the top; the dehydration component comprises two fixed gravity dehydration tanks, six low vacuum dehydration tanks, five medium vacuum dehydration tanks, two high vacuum dehydration tanks and a high vacuum transfer tank which are sequentially arranged from right to left.

2. A high-speed wire machine MB dewatering apparatus as set forth in claim 1, wherein: the panel on the high vacuum transfer box is a high vacuum transfer box panel without arc degree.

3. A high-speed wire machine MB dewatering apparatus as set forth in claim 1, wherein: the fixed gravity dewatering box is provided with a wiper plate which is obliquely arranged at a certain angle.

4. A high-speed wire machine MB dewatering apparatus as set forth in claim 1, wherein: and the middle vacuum dehydration tank is connected with a middle vacuum steam-water separator.

5. A high-speed wire machine MB dewatering apparatus as set forth in claim 1, wherein: and the high-vacuum dewatering tank is connected with a high-vacuum steam-water separator.

6. A high-speed wire machine MB dewatering apparatus as set forth in claim 1, wherein: the net feeding loop wire comprises a plurality of upper driving rollers and a net feeding sleeve, and the net feeding sleeve is arranged on the outer sides of the upper driving rollers.