CN219653379U

CN219653379U - Deslagging device of paper machine

Info

Publication number: CN219653379U
Application number: CN202320882724.8U
Authority: CN
Inventors: 黎启标; 雷光友; 杜健; 纪凯
Original assignee: Foshan Nanhai Baotuo Paper Equipment Co ltd
Current assignee: Foshan Nanhai Baotuo Paper Equipment Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-08
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses a deslagging device of a paper machine, which comprises a white water tank, a deslagging pump assembly, a deslagging device assembly and a head box, wherein the deslagging pump assembly is connected with the white water tank through a water inlet pipe assembly and is used for diluting paper pulp conveyed by a pre-papermaking tower by utilizing water in the white water tank, the deslagging device assembly is connected with the deslagging pump assembly through a pulp conveying pipe assembly and is used for deslagging the paper pulp flowing through the deslagging pump assembly, and a part of the paper pulp processed by the deslagging device assembly is conveyed into the head box. The deslagging device of the paper machine can realize the simplest flow control by arranging the deslagging device component and the deslagging pump component, realize multistage deslagging, have high utilization rate of slag slurry and less waste discharge, and optimize the system cost; but also can filter impurities to a great extent, so that the quality of paper pulp is kept stable, and the paper stable production of the paper machine is ensured.

Description

Deslagging device of paper machine

Technical Field

The utility model relates to the field of deslagging of paper machines, in particular to a deslagging device of a paper machine.

Background

Along with improvement of life quality of people and high-speed development of new energy sources, demands of people on paperboards are increasing, a large amount of residues such as plastics, sand and stone, iron blocks, asphalt, paraffin, printing ink, sticky matters and the like are often doped in pulp of raw materials for producing paperboards, the quality of the paperboards can be greatly influenced by the residues, and as the waste paper pulp contains various different types of impurities and the specific gravity of the impurities is different, the impurities in the waste paper pulp cannot be removed at one time, the existing deslagging device has lower deslagging efficiency, complex structure and higher cost.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a deslagging device of a paper machine.

The technical scheme adopted for solving the technical problems is as follows: constructing a deslagging device of a paper machine, which comprises a white water tank, a deslagging pump assembly, a deslagging device assembly and a headbox;

the deslagging pump assembly is connected with the white water tank through a water inlet pipe assembly and is used for diluting paper pulp conveyed by the pre-papermaking tower by utilizing water in the white water tank;

the scummer assembly is connected with the scummer assembly through a pulp conveying pipe assembly and is used for carrying out scummer on paper pulp flowing through the scummer assembly and conveying a part of paper pulp processed by the scummer assembly into the headbox.

In some embodiments, the water inlet pipe assembly includes a main inlet pipe connected at one end to the white water tank, the main inlet pipe being divided into a first inlet branch pipe, a second inlet branch pipe, and a third inlet branch pipe by a quick connector.

In some embodiments, the deslagging pump assembly comprises a first deslagging pump connected to the first water inlet branch line, a second deslagging pump connected to the second water inlet branch line, and a third deslagging pump connected to the third water inlet branch line.

In some embodiments, the slag remover assembly comprises a first slag remover, a second slag remover, and a third slag remover;

the outlet end of the first deslagging pump is connected with the inlet end of the first deslagging device through a first slurry conveying pipeline;

the outlet end of the second deslagging pump is connected with the inlet end of the second deslagging device through a second slurry conveying pipeline;

and the outlet end of the third deslagging pump is connected with the inlet end of the third deslagging device through a third slurry conveying pipeline.

In some embodiments, the first outlet end of the first slag separator is connected to the headbox by a desizing line and the second outlet end is connected to the second inlet leg by a first desizing line.

In some embodiments, the first outlet end of the second slag separator is connected to the first water inlet branch line by a first slurry return line, and the second outlet end is connected to the third water inlet branch line by a second slurry outlet line.

In some embodiments, the first outlet end of the third slag separator is connected to the second water inlet branch line via a second pulp return line, and the second outlet end thereof is connected to a pulp discharge line for discharging pulp from the device.

In some embodiments, the first deslagging pump is connected with a first deslagging driving motor, the second deslagging pump is connected with a second deslagging driving motor, and the third deslagging pump is connected with a third deslagging driving motor.

In some embodiments, the water inlet pipe assembly and the slurry conveying pipe assembly are provided with control valves.

In some embodiments, a filter is provided on the water inlet main line.

The implementation of the utility model has the following beneficial effects: the deslagging device of the paper machine can realize the simplest flow control by arranging the deslagging device component and the deslagging pump component, realize multistage deslagging, have high utilization rate of slag slurry and less waste discharge, and optimize the system cost; but also can filter impurities to a great extent, so that the quality of paper pulp is kept stable, and the paper stable production of the paper machine is ensured.

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 view of a deslagging device of a paper machine in accordance with 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, a deslagging device for a paper machine according to some embodiments of the present utility model includes a white water tank 1, a deslagging pump assembly 2, a deslagging device assembly 3 and a headbox 4, wherein the deslagging pump assembly 2 is connected with the white water tank 1 through a water inlet pipe assembly 5 for diluting pulp transported from a pre-papermaking tower by water in the white water tank 1, the deslagging device assembly 3 is connected with the deslagging pump assembly 2 through a pulp conveying pipe assembly 6 for deslagging pulp flowing through the deslagging pump assembly 2, and a part of pulp processed by the deslagging device assembly 3 is conveyed into the headbox 4. As can be appreciated, the deslagging device of the paper machine can realize the simplest flow control by arranging the deslagging device assembly 3 and the deslagging pump assembly 2, realize multistage deslagging, has high utilization rate of slag slurry and less waste discharge, and realizes the optimization of system cost; but also can filter impurities to a great extent, so that the quality of paper pulp is kept stable, and the paper stable production of the paper machine is ensured.

The water inlet pipe assembly 5 comprises a water inlet main pipeline 51 with one end connected with the white water tank 1, wherein the water inlet main pipeline 51 is divided into a first water inlet branch pipeline 52, a second water inlet branch pipeline 53 and a third water inlet branch pipeline 54 through quick connectors. The first water inlet branch line 52, the second water inlet branch line 53 and the third water inlet branch line 54 are connected in parallel, so that the deslagging pump assembly 2 can directly utilize the water of the white water tank 1.

Further, the deslagging pump assembly 2 comprises a first deslagging pump 21 connected to a first water inlet branch line 52, a second deslagging pump 22 connected to a second water inlet branch line 53, and a third deslagging pump 23 connected to a third water inlet branch line 54. The scummer assembly 3 comprises a first scummer 31, a second scummer 32 and a third scummer 33, the outlet end of the first scummer 21 being connected to the inlet end of the first scummer 31 via a first slurry line 61, the outlet end of the second scummer 22 being connected to the inlet end of the second scummer 32 via a second slurry line 62, the outlet end of the third scummer 23 being connected to the inlet end of the third scummer 33 via a third slurry line 63.

Still further, the first outlet end of the first slag separator 31 is connected to the headbox 4 via a desizing line 64, the second outlet end thereof is connected to the second inlet branch line 53 via a first desizing line 65, the first outlet end of the second slag separator 32 is connected to the first inlet branch line 52 via a first backsize line 66, the second outlet end thereof is connected to the third inlet branch line 54 via a second desizing line 67, the first outlet end of the third slag separator 33 is connected to the second inlet branch line 53 via a second backsize line 68, and the second outlet end thereof is connected to a pulp discharge line 69 for discharging pulp.

As can be appreciated, the deslagging flow of the deslagging device of the paper machine is as follows: the three deslagging pumps are all connected with water in a white water tank 1 under the machine to dilute the paper pulp sent by a pre-papermaking tower, part of the paper pulp is sent to the inlet of a first deslagging device 31 by the pre-papermaking tower, deslagging is carried out by the first deslagging device 31, and the good pulp is sent to a pulp flushing pump port for direct use; the slag slurry enters the second slag separator 32, and slag removal operation is performed by the second slag separator 32. The first-stage slag slurry is deslagged by the second deslagging device 32, the good slurry is sent to the first deslagging device 31, the first deslagging device 31 performs secondary deslagging, then the second-stage slag slurry enters the third deslagging device 33, and the third deslagging device 33 performs deslagging operation. The second-stage slag slurry is subjected to slag removal by a third slag remover 33, the good slurry is sent to a second slag remover 32, and the second slag remover 32 performs second slag removal; the slag slurry is not used any more and is discharged out of the factory building through the trench.

The deslagging device of the paper machine has the advantages that:

1. the plurality of slag removers are arranged, so that the treatment efficiency of the fed slurry is improved, the high-efficiency slag removal of all the slurry is ensured, the slurry is discharged through the good slurry pipe, the purity of the finished product is improved, and the production efficiency is improved;

2. the slag collecting device is separated from the high-concentration slag separator, so that the slag collecting effect is ensured, the repeated influence of slurry slag on good slurry is avoided, the slurry slag is effectively removed, the purity of a finished product is ensured, and the production efficiency is ensured;

3. the three-section slag remover is arranged for removing slag for a plurality of times, so that the recycling rate of the effective components, namely fibers, in the slurry is improved, the production cost is reduced, and the waste is avoided.

Wherein, this first deslagging pump 21 is connected with first deslagging driving motor 24, and second deslagging pump 22 is connected with second deslagging driving motor 25, and third deslagging pump 23 is connected with third deslagging driving motor 26. The driving motor can be connected with the deslagging pump through an elastic coupling and is used for driving the deslagging pump to work.

Preferably, the water inlet pipe assembly 5 and the slurry pipe assembly 6 are provided with control valves 11. The control valve 11 may be a hydraulic ball valve for controlling the pressure and flow on the water inlet pipe assembly 5 and the slurry pipe assembly 6.

Further, a filter 511 may be provided in the main water inlet line 51. The filter 511 may be a double-cylinder filter 511, and may be used to intercept various dirt such as abrasive grains generated during operation of the hydraulic components on the water inlet main line 51.

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 deslagging device of a paper machine, which is characterized by comprising a white water tank (1), a deslagging pump assembly (2), a deslagging device assembly (3) and a headbox (4);

the deslagging pump assembly (2) is connected with the white water tank (1) through a water inlet pipe assembly (5) and is used for diluting paper pulp conveyed by the pre-papermaking tower by utilizing water in the white water tank (1);

the deslagging device assembly (3) is connected with the deslagging pump assembly (2) through a pulp conveying pipe assembly (6) and is used for deslagging paper pulp flowing through the deslagging pump assembly (2) and conveying a part of paper pulp processed by the deslagging device assembly (3) into the headbox (4).

2. A paper machine deslagging device according to claim 1, characterized in that the water inlet pipe assembly (5) comprises a main water inlet pipe (51) connected at one end to the white water tank (1), the main water inlet pipe (51) being divided by a quick joint into a first water inlet branch pipe (52), a second water inlet branch pipe (53) and a third water inlet branch pipe (54).

3. The paper machine deslagging device according to claim 2, characterized in that the deslagging pump assembly (2) comprises a first deslagging pump (21) connected to the first water inlet branch line (52), a second deslagging pump (22) connected to the second water inlet branch line (53), and a third deslagging pump (23) connected to the third water inlet branch line (54).

4. A paper machine clothing as claimed in claim 3, characterized in that the clothing assembly (3) comprises a first clothing cleaner (31), a second clothing cleaner (32) and a third clothing cleaner (33);

the outlet end of the first deslagging pump (21) is connected with the inlet end of the first deslagging device (31) through a first slurry conveying pipeline (61);

the outlet end of the second deslagging pump (22) is connected with the inlet end of the second deslagging device (32) through a second slurry conveying pipeline (62);

the outlet end of the third deslagging pump (23) is connected with the inlet end of the third deslagging device (33) through a third slurry conveying pipeline (63).

5. A paper machine clothing as claimed in claim 4, characterized in that the first outlet end of the first clothing cleaner (31) is connected to the headbox (4) via a desizing line (64) and the second outlet end is connected to the second inlet leg (53) via a first pulp outlet line (65).

6. The paper machine deslagging device according to claim 4, characterized in that the first outlet end of the second deslagging device (32) is connected to the first water inlet branch line (52) through a first pulp return line (66), and the second outlet end is connected to the third water inlet branch line (54) through a second pulp outlet line (67).

7. A paper machine clothing as claimed in claim 4, characterized in that the first outlet end of the third clothing cleaner (33) is connected to the second water inlet branch line (53) by means of a second pulp return line (68), the second outlet end of which is connected to a pulp discharge line (69) for discharging pulp from the device.

8. A paper machine clothing as claimed in claim 3, characterized in that the first clothing removal pump (21) is connected with a first clothing removal drive motor (24), the second clothing removal pump (22) is connected with a second clothing removal drive motor (25), and the third clothing removal pump (23) is connected with a third clothing removal drive motor (26).

9. The deslagging device of a paper machine according to claim 1, characterized in that the water inlet pipe assembly (5) and the pulp delivery pipe assembly (6) are provided with control valves (11).

10. A paper machine clothing as claimed in claim 2, characterized in that the main water inlet line (51) is provided with a filter (511).