CN220224764U

CN220224764U - Vacuum forming system of hot air penetrating TAD paper machine

Info

Publication number: CN220224764U
Application number: CN202321566203.8U
Authority: CN
Inventors: 袁同圣; 汤振鹏; 陈建芳; 潘启钊; 陈智江
Original assignee: Foshan Nanhai Baotuo Paper Equipment Co ltd
Current assignee: Foshan Nanhai Baotuo Paper Equipment Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-12-22
Anticipated expiration: 2033-06-19

Abstract

The utility model discloses a vacuum forming system of a hot air penetrating TAD paper machine, which comprises a vacuum forming roller device, a first rotary component and a second rotary component, wherein the first rotary component comprises a first forming net, a breast roll, a first correcting roll, a first tensioning roll and a return roll which are sequentially arranged along the running direction of the first forming net, the second rotary component comprises a second forming net, a first guide roll, a second tensioning roll, a second guide roll and a second correcting roll which are sequentially arranged along the running direction of the second forming net, the first forming net and the second forming net pass through the vacuum forming roller device, the vacuum forming roller device comprises a cylinder body, a transmission main shaft fixedly connected with the cylinder body and a vacuum air cover arranged on the transmission side of the cylinder body, the transmission main shaft is used for driving the cylinder body to do rotary motion, and the vacuum air cover is fixedly arranged on the transmission side of the cylinder body, so that wet paper on the forming net is further dehydrated and dried rapidly, and the wet paper transfer success rate and dehydration efficiency are improved.

Description

Vacuum forming system of hot air penetrating TAD paper machine

Technical Field

The utility model relates to the field of papermaking equipment, in particular to a vacuum forming system of a hot air penetrating TAD paper machine.

Background

The wire section is the main part of the paper machine and has the main function of removing most of the water in the upper wire pulp to form a wet paper web with uniform and uniform whole width, and the dewatering mode is filtration and suction dewatering. The water removed from the wire section is typically 95% or more of the water removed from the sizing agent. Dewatering elements under the wire side of a conventional fourdrinier machine are arranged in a sequence of weak to strong dewatering capacities. The dehydration forming principle is as follows: the uniform slurry flows onto the net surface from the head box at a certain speed, and most of the water in the slurry is filtered and drained by the paper making net due to the actions of gravity, suction force, net vibration and the like. The dehydration forming process is as follows: the slurry flows out of the headbox and is dewatered more gently by breast rolls and forming plates, table rolls, etc.; and the wet paper sheet is dehydrated in a large quantity through a dehydration plate and a wet vacuum box, at the moment, the dehydration resistance is increased, and finally, the wet paper sheet is further dehydrated through the vacuum box and a vacuum couch roll and then is transferred to a pressing part through a suction roll. The disadvantage of the wire section of such a paper machine is that the dewatering mechanism is relatively complex, the equipment investment and running costs are high, and the dewatering efficiency is low.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a vacuum forming system of a hot air penetrating TAD paper machine.

The technical scheme adopted for solving the technical problems is as follows: constructing a vacuum forming system of a hot air penetrating TAD paper machine, which comprises a vacuum forming roller device, a first rotary assembly and a second rotary assembly;

the first rotary assembly comprises a first forming net, and a breast roll, a first correction roll, a first tensioning roll and a return roll which are sequentially arranged along the running direction of the first forming net;

the second rotary assembly comprises a second forming net, and a first guide roller, a second tensioning roller, a second guide roller and a second correction roller which are sequentially arranged along the running direction of the second forming net;

the first forming wire and the second forming wire both pass through the vacuum forming roll apparatus;

the vacuum forming roller device comprises a cylinder body, a transmission main shaft fixedly connected with the cylinder body and a vacuum air cover arranged on the transmission side of the cylinder body, wherein the transmission main shaft is used for driving the cylinder body to do rotary motion, and the vacuum air cover is fixedly arranged on the transmission side of the cylinder body.

In some embodiments, the vacuum forming roll apparatus further comprises a spacer assembly comprising a first spacer, a second spacer, a first end closure plate, and a second end closure plate;

the first positioning seat and the second positioning seat are arranged on two sides of the inner cavity of the cylinder body separately, the first end sealing plate is sleeved on the periphery of the first positioning seat, the second end sealing plate is sleeved on the periphery of the second positioning seat, and a fixing plate is connected between the first positioning seat and the second positioning seat.

In some embodiments, the space between the first positioning seat, the second positioning seat, the fixed plate, and the drive spindle forms a mold roll vacuum zone that is divided into a first mold roll vacuum zone and a second mold roll vacuum zone.

In some embodiments, the second positioning seat is provided with a first communicating part communicated with the vacuum area of the first forming roller and a second communicating part communicated with the vacuum area of the second forming roller;

the cylinder body is provided with a first through part corresponding to the first communication part and a second through part corresponding to the second communication part on the driving side axial end surface.

In some embodiments, a first air cap vacuum region communicated with the first through part and a second air cap vacuum region communicated with the second through part are arranged in the vacuum air cap, and a first air cap suction port communicated with the first air cap vacuum region and a second air cap suction port communicated with the second air cap vacuum region are arranged on the vacuum air cap.

In some embodiments, the vacuum bellows includes a cap body and a retention assembly disposed in the cap body;

the retention assembly comprises a first retention seat, a second retention seat and a third retention seat, the first air cap suction opening is positioned between the first retention seat and the second retention seat, and the second air cap suction opening is positioned between the second retention seat and the third retention seat.

In some embodiments, the cylinder and the cover are each made of stainless steel.

In some embodiments, the vacuum forming roll apparatus is externally coated with a corrosion resistant layer.

In some embodiments, the vacuum forming system further comprises a paper machine headbox having a headbox stock outlet located between the vacuum forming roll apparatus and the return roll.

The implementation of the utility model has the following beneficial effects: in the vacuum forming system of the hot air penetrating TAD paper machine, a first forming net in a closed form sequentially passes through a vacuum forming roller device, a breast roller, a first correction roller, a first tensioning roller and a return roller to form a rotary movement loop A, a second forming net in a closed form sequentially passes through the vacuum forming roller device, a first guide roller, a second tensioning roller, a second guide roller and a second correction roller to form a rotary movement loop B, the first forming net and the second forming net wrap the vacuum forming roller device in a certain wrap angle mode, the first forming net and the second forming net are mutually attached to the surfaces of the vacuum forming roller device to be extruded, so that paper pulp between the two forming nets is rapidly extruded and dehydrated to form a wet paper sheet, the wet paper sheet on the surface of the first forming net with a relatively low density point is taken away by the second forming net with a relatively high density point at the same operation speed, and residual paper sheet which is attached to the surfaces of the vacuum forming roller device is extruded and dehydrated is rapidly absorbed by the residual paper sheet after being extruded and dehydrated by the vacuum forming roller device, the wet paper sheet is further improved in the success rate of moisture removal and dehydration.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings:

FIG. 1 is a schematic diagram of the overall structure of a vacuum forming system of a through-air TAD machine according to some embodiments of the utility model;

FIG. 2 is a cross-sectional view of the internal structure of a vacuum forming roll apparatus in some embodiments of the utility model;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a schematic cross-sectional view of a vacuum bellows in some embodiments of the utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 4, a vacuum forming system of a through-air TAD machine according to some embodiments of the present utility model includes a vacuum forming roll apparatus 1, a first rotating assembly 2, and a second rotating assembly 3, wherein the first rotating assembly 2 includes a first forming wire 21, and a breast roll 22, a first correcting roll 23, a first tension roll 24, and a return roll 25 sequentially disposed along a running direction of the first forming wire 21, and the second rotating assembly 3 includes a second forming wire 31, and a first guide roll 32, a second tension roll 33, a second guide roll 34, and a second correcting roll 35 sequentially disposed along the running direction of the second forming wire 31, and the first forming wire 21 and the second forming wire 31 each pass through the vacuum forming roll apparatus 1.

In the vacuum forming system of the through-air TAD machine, as shown in fig. 1, a first forming wire 21 in a closed form sequentially passes through a vacuum forming roll device 1, a breast roll 22, a first correction roll 23, a first tension roll 24 and a return roll 25 to form a rotary motion loop a, a second forming wire 31 in a closed form sequentially passes through the vacuum forming roll device 1, a first guide roll 32, a second tension roll 33, a second guide roll 34 and a second correction roll 35 to form a rotary motion loop B, the first forming wire 21 and the second forming wire 31 are wrapped around the vacuum forming roll device 1 in a certain wrap angle, the first forming wire 21 and the second forming wire 31 are mutually attached to the surface of the vacuum forming roll device 1, so that pulp between the two forming wires is rapidly extruded and dehydrated to form a wet paper sheet, the wet paper sheet on the surface of the first forming wire 21 with a relatively low density point is carried away by the second forming wire 31 with a relatively high density point at the same running speed, the wet paper sheet on the surface of the first forming wire 21 is rapidly extruded and dehydrated by the vacuum forming roll device 1, the wet paper sheet is further moisture is rapidly absorbed by the wet paper sheet after the wet paper sheet is rapidly dehydrated by the vacuum forming roll device 1.

The vacuum forming roller device 1 comprises a cylinder body 11, a transmission main shaft 12 fixedly connected with the cylinder body 11 and a vacuum air cover 13 arranged on the transmission side of the cylinder body 11, wherein the transmission main shaft 12 is used for driving the cylinder body 11 to rotate, the vacuum air cover 13 is fixedly arranged on the transmission side of the cylinder body 11, and the cylinder body 11 can be fixedly connected with the transmission main shaft 12 through welding.

As shown in fig. 2, the vacuum forming roller device 1 further includes a positioning frame assembly 14, the positioning frame assembly 14 includes a first positioning seat 141, a second positioning seat 142, a first end sealing plate 143 and a second end sealing plate 144, the first positioning seat 141 and the second positioning seat 142 are separately disposed at two sides of the inner cavity of the cylinder 11, the first end sealing plate 143 is sleeved on the outer periphery of the first positioning seat 141, the second end sealing plate 144 is sleeved on the outer periphery of the second positioning seat 142, and a fixing plate 145 is connected between the first positioning seat 141 and the second positioning seat 142.

As shown in fig. 2 to 4, the space between the first positioning seat 141, the second positioning seat 142, the fixing plate 145 and the transmission main shaft 12 forms a forming roller vacuum area, the forming roller vacuum area is divided into a first forming roller vacuum area 15 and a second forming roller vacuum area 16, a first communication part 1421 communicated with the first forming roller vacuum area 15 and a second communication part 1422 communicated with the second forming roller vacuum area 16 are arranged on the second positioning seat 142, a first communication part 111 corresponding to the first communication part 1421 and a second communication part 112 corresponding to the second communication part 1422 are arranged on the transmission side axial end surface of the cylinder 11, a first air cap vacuum area 131 communicated with the first communication part 111 and a second air cap vacuum area 132 communicated with the second communication part 112 are arranged in the vacuum air cap 13, and a first air cap 133 communicated with the first air cap area 131 and a second air cap 134 communicated with the second air cap vacuum area 132 are arranged on the vacuum air cap 13. Wherein, the vacuum cap 13 includes a cap body 135 and a retention assembly 136 disposed in the cap body 135, the retention assembly 136 includes a first retention seat 1361, a second retention seat 1362 and a third retention seat 1363, the first cap suction opening 133 is disposed between the first retention seat 1361 and the second retention seat 1362, and the second cap suction opening 134 is disposed between the second retention seat 1362 and the third retention seat 1363.

As can be appreciated, the vacuum air cap 13 fixed to the driving side of the vacuum forming roll apparatus 1, when the first forming roll vacuum zone 15 rotates to the first air cap vacuum zone 131 along with the rotation of the vacuum forming roll apparatus 1, air is pumped from the first air cap suction port 133, so that a real vacuum zone is formed in the first forming roll vacuum zone 15, and the wet paper sheet wrapped on the second forming wire 31 on the vacuum forming roll apparatus 1 is pumped to generate a pumping action, so as to generate an auxiliary force action for transferring the wet paper sheet. Similarly, when the second forming roll vacuum zone 16 is transferred to the second cover vacuum zone 132, air is drawn from the second cover suction opening 134 to form a true vacuum zone in the second forming roll vacuum zone 16, and the wet sheet wrapped on the first forming wire 21 of the vacuum forming roll apparatus 1 is sucked to generate a suction effect to form an auxiliary force for transferring the wet sheet.

The cylinder 11 and the cover 135 are made of stainless steel, which has a certain strength and rigidity, and is corrosion-resistant and wear-resistant.

Preferably, the vacuum forming roll device 1 is externally coated with a corrosion-preventing layer. The corrosion protection layer may be encapsulated, copper plated, chrome plated, etc. outside the vacuum forming roll apparatus 1.

The vacuum forming system further comprises a paper machine headbox 4, the headbox 4 outlet of which is located between the vacuum forming roll arrangement 1 and the return roll 25. The headbox 4 is used to transfer the pulp meeting the requirements to the forming wire according to the requirements of the forming section of the paper machine, providing the necessary preconditions for good formation of the paper web.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A vacuum forming system of a hot air penetrating TAD paper machine, which is characterized by comprising a vacuum forming roller device (1), a first rotary component (2) and a second rotary component (3);

the first rotary assembly (2) comprises a first forming net (21), and a breast roll (22), a first correction roll (23), a first tensioning roll (24) and a return roll (25) which are sequentially arranged along the running direction of the first forming net (21);

the second rotary assembly (3) comprises a second forming net (31), and a first guide roller (32), a second tensioning roller (33), a second guide roller (34) and a second correction roller (35) which are sequentially arranged along the running direction of the second forming net (31);

-the first forming wire (21) and the second forming wire (31) both pass through the vacuum forming roll arrangement (1);

the vacuum forming roller device (1) comprises a cylinder body (11), a transmission main shaft (12) fixedly connected with the cylinder body (11) and a vacuum air cover (13) arranged on the transmission side of the cylinder body (11), wherein the transmission main shaft (12) is used for driving the cylinder body (11) to do rotary motion, and the vacuum air cover (13) is fixedly arranged on the transmission side of the cylinder body (11).

2. The through-air TAD machine vacuum forming system of claim 1, wherein the vacuum forming roll apparatus (1) further comprises a spacer assembly (14), the spacer assembly (14) comprising a first spacer (141), a second spacer (142), a first end closure plate (143), and a second end closure plate (144);

the first positioning seat (141) and the second positioning seat (142) are separately arranged on two sides of the inner cavity of the cylinder body (11), the first end sealing plate (143) is sleeved on the periphery of the first positioning seat (141), the second end sealing plate (144) is sleeved on the periphery of the second positioning seat (142), and a fixing plate (145) is connected between the first positioning seat (141) and the second positioning seat (142).

3. The through-air TAD machine vacuum forming system of claim 2, wherein the space between the first positioning seat (141), the second positioning seat (142), the fixed plate (145) and the drive spindle (12) forms a forming roll vacuum zone that is divided into a first forming roll vacuum zone (15) and a second forming roll vacuum zone (16).

4. A through-air TAD machine vacuum forming system according to claim 3, wherein the second positioning seat (142) is provided with a first communicating portion (1421) communicating with the first forming roll vacuum zone (15) and a second communicating portion (1422) communicating with the second forming roll vacuum zone (16);

a first through portion (111) provided corresponding to the first communication portion (1421) and a second through portion (112) provided corresponding to the second communication portion (1422) are provided on the transmission-side axial end surface of the cylinder (11).

5. The vacuum forming system of the hot air penetrating TAD machine according to claim 4, wherein a first air cap vacuum area (131) communicated with the first through part (111) and a second air cap vacuum area (132) communicated with the second through part (112) are arranged in the vacuum air cap (13), and a first air cap suction port (133) communicated with the first air cap vacuum area (131) and a second air cap suction port (134) communicated with the second air cap vacuum area (132) are arranged on the vacuum air cap (13).

6. The through-air TAD machine vacuum forming system of claim 5, wherein the vacuum hood (13) includes a cover body (135) and a retention assembly (136) provided in the cover body (135);

the retention assembly (136) includes a first retention seat (1361), a second retention seat (1362), and a third retention seat (1363), the first flap suction opening (133) is positioned between the first retention seat (1361) and the second retention seat (1362), and the second flap suction opening (134) is positioned between the second retention seat (1362) and the third retention seat (1363).

7. The through-air TAD machine vacuum forming system according to claim 6, wherein the cylinder (11) and the cover (135) are each made of stainless steel material.

8. The through-air TAD machine vacuum forming system according to claim 1, characterized in that the vacuum forming roll device (1) is externally coated with a corrosion-preventing layer.

9. The through-air TAD machine vacuum forming system of claim 1, further comprising a machine headbox (4), wherein a headbox (4) outlet is located between the vacuum forming roll arrangement (1) and the return roll (25).