CN212925597U

CN212925597U - Pulp homogenizing system of pulp flow box of paper machine

Info

Publication number: CN212925597U
Application number: CN202021078961.1U
Authority: CN
Inventors: 俞学兵
Original assignee: YANCHENG HONGYU PAPER MACHINERY CO Ltd
Current assignee: YANCHENG HONGYU PAPER MACHINERY CO Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-04-09
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a pulp box homogenate system of a paper machine, which comprises a pulp inlet pipe, a dilution cavity, a homogenate device and a pulp discharge device, wherein the pulp flowing in from the pulp inlet pipe is mixed with the dilution water flowing out from a dilution water shunt pipe in the dilution cavity, the flow of the dilution water can be controlled by adjusting an adjusting valve on the dilution water shunt pipe, and the pulp flowing out from the dilution cavity is uniformly stirred by the homogenate device and then flows out from a pulp flow outlet of the pulp discharge device; the utility model provides a head box homogenate system has avoided appearing the phenomenon and the dilution pipe jam problem of crossing current through the mode that adopts reasonable interpolation dilution water, has improved and has utilized the dilution water to control the quantitative effect of banner, is favorable to fibrous evenly distributed, improves the quality of paper.

Description

Pulp homogenizing system of pulp flow box of paper machine

Technical Field

The utility model relates to a paper machine head box homogenate system belongs to papermaking equipment technical field.

Background

The head box is an important device for determining the quality of a fiber tissue structure of paper, the uniformity and the controllability in the paper production process are directly influenced, an upper lip plate koji matching adjusting method of the head box is adopted in the aspect of adjusting the whole width transverse direction quantification before the nineties, and a method for locally adjusting the concentration of pulp and controlling the whole width transverse direction quantification is successfully developed in the early stage of the nineties; the existing method for locally adjusting the concentration of the pulp is to adjust the cross-web quantification of paper by adding dilution water to the pulp and controlling the concentration of the pulp in each pulp distribution tube bundle by controlling the amount of the dilution water, and the commonly used addition method is that the dilution water is added into the pulp distribution tube bundle vertically or at an angle smaller than 90 degrees, so that the pulp flow at the outlet of the pulp distribution tube bundle is increased instantly, and the pulp flow is increased along with the increase of the amount of the dilution water due to the pumping effect of the addition of the dilution water, so that the cross-flow is easy to generate; if the dilution water is injected in the direction opposite to the pulp flow direction at the upstream of the pulp distribution, the dilution water shunt pipes can only be arranged between the pulp distribution branch pipes, so the diameter of the dilution water shunt pipes is limited by the distance between the pulp distribution branch pipes, and if the diameter of the dilution water pipes is too small, the blockage of the dilution water pipes can be caused when the white water is used as the dilution water.

Disclosure of Invention

For solving the not enough of prior art, the utility model provides a paper machine head box homogenate system is in order to solve the problem that proposes in the above-mentioned background art.

The utility model discloses the technical scheme who adopts does:

a paper machine head box homogenate system which characterized in that: the pulp diluting device comprises a plurality of pulp inlet pipes, a diluting cavity, a homogenizing device and a pulp flowing device which are sequentially connected, wherein the diluting cavity is provided with a plurality of pulp inlets at equal intervals, the diluting cavity comprises a pulp inlet, a pulp outlet, a diluting water inlet and a diluting cavity, the pulp inlet of the diluting cavity is communicated with the pulp inlet pipe, the pulp outlet of the diluting cavity is communicated with the homogenizing device, and the diluting water inlet of the diluting cavity is communicated with a diluting water pipe; the homogenizing device comprises a homogenizing chamber and a homogenizing stirrer, wherein the homogenizing stirrer is arranged inside the homogenizing chamber, and a motor for driving the homogenizing stirrer to rotate is arranged outside the homogenizing chamber; the head flowing device comprises a cylindrical shell, the inlet of the cylindrical shell is communicated with the outlet of the homogenate chamber, the right side wall of the cylindrical shell is provided with a pulp flowing outlet, the cylindrical shell rotates inside and is provided with a rectification homogenate roller, the rectification homogenate roller and the cylindrical shell are arranged coaxially, and the rectification homogenate roller rotates through the driving of an external driving device.

In order to further realize the utility model discloses, the dilution water entry of diluting the cavity passes through dilution water shunt tubes and dilutes the water pipe intercommunication.

In order to further realize the utility model, the dilution water shunt pipe is provided with an adjusting valve; the flow of the dilution water is controlled by adjusting the valve so as to play a role in adjusting the concentration of the slurry.

In order to further realize the utility model discloses, dilute the thick liquid mouth diameter of advancing of cavity and be less than out the thick liquid mouth diameter.

In order to further realize the utility model discloses, the homogenate agitator comprises (mixing) shaft and two straight boards of fixing on the (mixing) shaft band-pass hole, and the (mixing) shaft bottom is passed and is connected with motor drive behind the homogenate room bottom, and is rotation sealing connection between (mixing) shaft and the homogenate room bottom.

In order to further realize the utility model discloses, the even pulp roller of rectification includes the roller and cup joints at the epaxial roller of roller, and is inclosed space between roller and the roller, still is provided with the support between the circumferential face in the roller and the roller.

In order to further realize the utility model, the slurry outlet arranged on the right side wall of the cylindrical shell consists of a fixed bottom plate and a rotatable upper lip plate; the rotatable upper lip plate is used to control the banner weight distribution of the paper.

The beneficial effects of the utility model reside in that: the utility model discloses a dilution cavity this kind of design with the process control that the dilution water pours into thick liquids into in the dilution cavity of circular cavity structure, owing to dilute the cavity as a buffering, the crossing current that the pump income effect that the in-process that has reduced the dilution water and has poured into the thick liquids probably causes arouses, the diameter of dilution water shunt tubes need not be limited by the interval between the traditional cloth thick liquids branch pipe this moment again, can carry out the selection of dilution water shunt tubes position and diameter size according to diluting the cavity, then stir the mixed liquid of thick liquids and dilution water once more in guaranteeing the fibre evenly distributed in the fibre suspension in the water, improve the evenness of page as far as possible.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the dilution chamber communicating with the slurry inlet pipe;

fig. 3 is a cross-sectional view of the diluting cavity of the present invention.

1 slurry inlet pipe, 2 dilution water pipe, 3 dilution water shunt pipe, 4 dilution cavity, 5 homogenizing stirrer, 6 homogenizing chamber, 7 cylindrical shell, 8 rectifying homogenizing roller, 81 roll shaft, 82 roller, 83 support, 9 bottom plate, 10 upper lip plate.

Detailed Description

As shown in fig. 1-3, the present embodiment is a pulp box homogenizing system of a paper machine, which includes a pulp inlet pipe 1, a dilution cavity 4, a homogenizing device and a pulp flowing device, which are connected in sequence, wherein the dilution cavity 4 is provided with a plurality of equal intervals, the dilution cavity 4 includes a pulp inlet 4-1, a pulp outlet 4-2, a dilution water inlet 4-3 and a dilution chamber 4-4, the pulp inlet 4-1 of the dilution cavity 4 is communicated with the pulp inlet pipe 1, the pulp outlet 4-2 of the dilution cavity 4 is communicated with the homogenizing device, and the dilution water inlet 4-3 of the dilution cavity 4 is communicated with a dilution water pipe 2; the homogenizing device comprises a homogenizing chamber 6 and a homogenizing stirrer 5, wherein the homogenizing stirrer 5 is arranged inside the homogenizing chamber 6, and a motor for driving the homogenizing stirrer 5 to rotate is arranged outside the homogenizing chamber 6; the head flowing device comprises a cylindrical shell 7, an inlet of the cylindrical shell 7 is communicated with an outlet of the homogenizing chamber 6, a pulp flowing outlet is formed in the right side wall of the cylindrical shell 7, a rectification homogenizing roller 8 is arranged in the cylindrical shell 7 in a rotating mode, the rectification homogenizing roller 8 and the cylindrical shell 7 are arranged coaxially, and the rectification homogenizing roller 8 is driven to rotate through an external driving device.

In this embodiment, a dilution water inlet 4-3 of the dilution chamber 4 is communicated with the dilution water pipe 2 through a dilution water shunt pipe 3.

In this embodiment, the dilution water flow-splitting pipe 3 is provided with a regulating valve; the flow of the dilution water is controlled by the adjusting valve, so that the effect of adjusting the concentration of the slurry is achieved.

In the embodiment, the diameter of the slurry inlet 4-1 of the dilution cavity 4 is smaller than that of the slurry outlet 4-2.

In this embodiment, homogenate agitator 5 comprises the (mixing) shaft and fixes two straight boards of taking the through-hole on the (mixing) shaft, and the (mixing) shaft bottom is connected with motor drive after passing homogenate chamber 6 bottoms, and is rotating sealing connection between (mixing) shaft and the homogenate chamber 6 bottoms.

In this embodiment, the rectification and homogenate roller 8 comprises a roller shaft 81 and a roller 82 sleeved on the roller shaft, a closed space is arranged between the roller shaft and the roller shaft, and a support 83 is further arranged between the inner circumferential surface of the roller and the roller shaft.

In this embodiment, the slurry outlet formed on the right side wall of the cylindrical housing 7 is composed of a fixed bottom plate 9 and a rotatable upper lip plate 10; the rotatable top lip 10 is used to control the banner dosing profile of the paper.

The working process of the embodiment is as follows: the pulp enters from a pulp inlet pipe 1 and enters into a dilution chamber 4-4 through a pulp inlet 4-1 of a plurality of dilution cavities 4 arranged side by side, a dilution water shunt pipe 3 is connected with a dilution water inlet 4-3 on the dilution cavity 4, a regulating valve on the dilution water shunt pipe 3 is opened to regulate the water quantity of the dilution water so as to mix the dilution water with the pulp in the dilution chamber 4-4, because the dilution water inlet 4-3 is arranged on the dilution chamber 4-4, when the regulating valve is opened to inject the dilution water, the dilution chamber 4-4 can play a buffer effect without generating a pumping effect and generating a cross flow phenomenon, the mixed pulp flows into a pulp homogenizing chamber 6 and is stirred through a pulp homogenizer 5 with a through hole, fibers in the pulp flows can be uniformly distributed in the fiber liquid after the pulp is stirred by the pulp homogenizer 5, and the uniformity of paper is improved, the lower part of the homogenizing chamber 6 is provided with a pulp flow outlet leading to a pulp flow inlet of a pulp flowing device, the uniformly mixed pulp flow enters the inside of a cylindrical shell 7 through the pulp flow inlet of the pulp flowing device, a rectifying and homogenizing roller 8 inside the cylindrical shell 7 runs at a high speed, so the pulp flow meets the rectifying and homogenizing roller 8 running at a high speed and can be subjected to a strong bias force, the bias force acts on the pulp flow to generate turbulence with high strength and small size, fibers in the pulp flow are further dispersed, most of the pulp flow flows out through an outlet of a bottom plate 9 and an outlet of an upper lip plate 10, and less of the pulp flow can rotate along with the rectifying and homogenizing roller 8 and continuously collide with the inside of the cylindrical shell 7 and then flow out.

The utility model discloses a dilution cavity this kind of design with the process control that the dilution water pours into thick liquids into in the dilution cavity of circular cavity structure, owing to dilute the cavity as a buffering, the crossing current that the pump income effect that the in-process that has reduced the dilution water and has poured into the thick liquids probably causes arouses, the diameter of dilution water shunt tubes need not be limited by the interval between the traditional cloth thick liquids branch pipe this moment again, can carry out the selection of dilution water shunt tubes position and diameter size according to diluting the cavity, then stir the mixed liquid of thick liquids and dilution water once more in guaranteeing the fibre evenly distributed in the fibre suspension in the water, improve the evenness of page as far as possible.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A paper machine head box homogenate system which characterized in that: the pulp diluting device comprises a pulp inlet pipe (1), a diluting cavity (4), a homogenizing device and a pulp flowing device which are sequentially connected, wherein a plurality of diluting cavities (4) are arranged at equal intervals, the diluting cavity (4) comprises a pulp inlet (4-1), a pulp outlet (4-2), a diluting water inlet (4-3) and a diluting cavity (4-4), the pulp inlet (4-1) of the diluting cavity (4) is communicated with the pulp inlet pipe (1), the pulp outlet (4-2) of the diluting cavity (4) is communicated with the homogenizing device, and the diluting water inlet (4-3) of the diluting cavity (4) is communicated with the diluting water pipe (2); the homogenizing device comprises a homogenizing stirrer (5) and a homogenizing chamber (6), wherein the homogenizing stirrer (5) is arranged inside the homogenizing chamber (6), and a motor for driving the homogenizing stirrer (5) to rotate is arranged outside the homogenizing chamber (6); the pulp flowing device comprises a cylindrical shell (7), an inlet of the cylindrical shell (7) is communicated with an outlet of the homogenizing chamber (6), a pulp flowing outlet is formed in the right side wall of the cylindrical shell (7), a rectification homogenizing roller (8) is arranged in the cylindrical shell (7) in a rotating mode, the rectification homogenizing roller (8) and the cylindrical shell (7) are arranged coaxially, and the rectification homogenizing roller (8) is driven to rotate through an external driving device.

2. A paper machine headbox homogenizing system according to claim 1, characterized in that the dilution water inlet (4-3) of the dilution chamber (4) communicates with the dilution water pipe (2) through a dilution water dividing pipe (3).

3. A paper machine headbox homogenizing system according to claim 2, characterized in that the dilution water shunt tube (3) is provided with a regulating valve.

4. A paper machine headbox homogenizing system according to claim 1, characterized in that the dilution chamber (4) has a smaller diameter of the stock inlet (4-1) than the stock outlet (4-2).

5. The pulp homogenizing system of the headbox of a paper machine according to claim 1, characterized in that the homogenizing mixer (5) consists of a mixing shaft and two straight plates with through holes fixed on the mixing shaft, the bottom end of the mixing shaft is in driving connection with a motor after passing through the bottom of the homogenizing chamber (6), and the mixing shaft is in rotating sealing connection with the bottom of the homogenizing chamber (6).

6. The refining system of the headbox of a paper machine according to claim 1, characterized in that the flow-straightening refining roll (8) comprises a roll shaft (81) and a roll (82) sleeved on the roll shaft, and a closed space is formed between the roll shaft and the roll shaft, and a support (83) is arranged between the inner circumferential surface of the roll and the roll shaft.

7. A paper machine headbox homogenizing system according to claim 1, characterized in that the right side wall of the cylindrical housing (7) is provided with a stock discharge opening formed by a stationary bottom plate (9) and a rotatable upper lip (10).