CN215593494U - Production facility of craft paper - Google Patents
Production facility of craft paper Download PDFInfo
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- CN215593494U CN215593494U CN202121442161.8U CN202121442161U CN215593494U CN 215593494 U CN215593494 U CN 215593494U CN 202121442161 U CN202121442161 U CN 202121442161U CN 215593494 U CN215593494 U CN 215593494U
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Abstract
The utility model relates to a production device of craft paper, which comprises a head box, a pressure transmitter and a controller, wherein the head box comprises more than two flow channels, a lip plate assembly and a lip plate driving unit, the more than two flow channels are communicated with an opening of the lip plate assembly, and the lip plate driving unit is used for controlling the size of the opening of the lip plate assembly; the pressure transmitter is used for detecting the pressure of the flow passage; the pressure transmitter is electrically connected with the controller and transmits a pressure signal to the controller, and the controller is set to control the lip driving unit according to the pressure signal transmitted by the pressure transmitter so that the size of the opening of the lip assembly reaches a preset value. Compared with the prior art, the method has the advantages that the opening degree of the lip plate is constant in the water mixing process when the paper machine is started, the water mixing flow change is reduced, the flow balance of the pulp is achieved, and the forming rate of the flowing water mixing is guaranteed.
Description
Technical Field
The utility model relates to the technical field of paper industry, in particular to a production device of craft paper.
Background
The two-layer pulp of a double-flow-channel head box has large difference in pulp, and two complete flow conveying systems are required for producing the kraft paper by the high-speed net paper clamping machine. The double-flow-channel head box relates to two-layer approach system water balance problem during cluster water, thick liquids do not surf the net when the head box is clustered water, two-layer rivers can't flow the system separately according to the balanced backward flow of two-layer dehydration proportion of paper machine design, often lead to the water of drifting to run toward the individual layer, head box lip opening is controlled by torque motor, the speed of a motor vehicle is fast the pressure head more high, the lip change rate is big more, it is big more to cluster water flow increment, two-layer more is difficult to the balance, very big restriction board operation.
In the process of implementing the utility model, the inventor finds that the following problems exist in the prior art:
the existing machine adopts a method of reducing the speed of the vehicle to the maximum extent, ensuring the success rate of water flowing and water mixing through a large amount of compensation clear water and wasting a large amount of clear water. The lip opening cannot be constant, so that the lip change rate is too large, and the flow of two layers of slurry is difficult to balance.
SUMMERY OF THE UTILITY MODEL
Therefore, a production device of the craft paper needs to be provided, and the technical problem that in the prior art, the lip plate change rate is too large and the flow of two layers of slurry is difficult to balance due to the fact that the lip plate opening degree cannot be constant is solved.
To achieve the above object, the inventors provide a kraft paper producing apparatus comprising
The head box comprises more than two flow channels, a lip assembly and a lip driving unit, wherein the lip assembly is provided with an opening for allowing liquid to pass through, the more than two flow channels are communicated with the opening of the lip assembly, and the lip driving unit is used for controlling the size of the opening of the lip assembly;
the pressure transmitter is used for detecting the pressure of the flow channel; and
and the controller is arranged to control the lip driving unit according to the pressure signal transmitted by the pressure transmitter so that the size of the opening of the lip assembly reaches a preset value.
Be different from prior art, the technical scheme of this application is used for control through lip drive unit the open-ended size of lip subassembly, pressure transmitter are used for detecting the pressure of runner, pressure transmitter with the controller electricity is connected, and transmits pressure signal for the controller, the controller is set up to the basis pressure transmitter transmits the pressure signal control of coming lip drive unit makes the open-ended size of lip subassembly reaches the default. Therefore, when the machine is started, a proper lip opening degree can be set, and the water flow of the head box is properly reduced; through the controller, when the pressure change of the flow channel exceeds a certain value, the lip pressing action of the head box is triggered once, and the lip driving unit automatically adjusts the opening of the lip to reach the set value of the lip. The opening degree of the lip plate is constant in the water mixing process when the paper machine is started, the water mixing flow change is reduced, the flow balance of the pulp is achieved, and the forming rate of the flowing water mixing is guaranteed.
As an embodiment of the present invention, the lip assembly includes an upper lip and a lower lip, the upper lip is disposed above the lower lip, and the opening is formed between the upper lip and the lower lip.
As an embodiment of the present invention, the lip driving unit includes a lip motor and an upper lip connecting mechanism, the lip motor is in transmission connection with the upper lip through the upper lip connecting mechanism, and the lip motor is configured to control a distance between the upper lip and the lower lip.
As an embodiment of the present invention, the pressure transmitter is disposed in the flow passage, and the pressure transmitter is configured to detect a change in pressure in the flow passage.
As an embodiment of the present invention, the kraft liner production equipment includes more than two pressure transmitters, and one pressure transmitter is disposed in each flow channel.
As an embodiment of the utility model, the production equipment of the kraft liner board further comprises a water supply pipeline, and the water supply pipeline is communicated with the flow channel.
As an embodiment of the utility model, the production equipment of the craft paper further comprises a breast roll and a forming roll, the breast roll is arranged above the forming roll, a gap is left between the breast roll and the forming roll, and the opening of the lip plate assembly is arranged opposite to the gap.
As an embodiment of the utility model, the production equipment of the craft paper further comprises a composite roller, and the composite roller is arranged at the rear end of the forming roller.
As an embodiment of the present invention, the kraft paper production apparatus further includes a top net and a bottom net, the breast roll is configured to drive the movement of the top net, the forming roll is configured to drive the movement of the bottom net, and the head box is configured to spray a slurry between the top net and the bottom net.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a kraft liner production facility according to an embodiment of the present application;
fig. 2 is a schematic structural view of a head box of a kraft liner production facility according to an embodiment of the present application;
FIG. 3 is a schematic view of a lip assembly according to an embodiment of the present application;
fig. 4 is a system circuit diagram of a kraft liner production facility according to an embodiment of the present application.
Description of reference numerals:
1. a surface net;
2. a breast roll;
3. a head box;
4. a bottom net;
5. a forming roller;
7. a compound roller;
8. a pressure transmitter is arranged on the base plate,
9. a controller for controlling the operation of the electronic device,
13. a headbox box;
14. an upper lip plate;
15. an upper lip plate connecting mechanism;
16. a lip motor;
17. a water supply pipeline;
18. a surface layer pulp distribution flow channel;
19. a bottom layer pulp distribution runner;
20. and a lower lip plate.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
Among the prior art, relate to two-layer approach system water balance problem during double-flow-channel head box cluster, thick liquids do not surf the net when the head box is shouldered, two-layer rivers can't design the balanced backward flow of two-layer dehydration proportion and flow the system separately, often lead to the water of drifting to run toward the individual layer, head box lip board aperture is controlled by torque motor, the speed of a motor vehicle is fast more high, the lip board rate of change is big more, it is big more to cluster water flow increment, two-layer more is difficult to the balance, very big restriction board operation.
The existing machine adopts a method of reducing the speed of the vehicle to the maximum extent, ensuring the success rate of water flowing and water mixing through a large amount of compensation clear water and wasting a large amount of clear water. The lip opening cannot be constant, so that the lip change rate is too large, and the flow of two layers of slurry is difficult to balance.
Therefore, the embodiment of the present application provides a technical solution, please refer to fig. 1 to 4, and the embodiment relates to a production apparatus of craft paper, including a head box 3, a pressure transmitter 8 and a controller 9, where the head box 3 includes more than two flow channels, a lip assembly and a lip driving unit, the lip assembly is provided with an opening for allowing liquid to pass through, the more than two flow channels are communicated with the opening of the lip assembly, and the lip driving unit is used for controlling the size of the opening of the lip assembly; the pressure transmitter 8 is used for detecting the pressure of the flow channel; the pressure transmitter 8 is electrically connected with the controller 9 and transmits a pressure signal to the controller 9, and the controller 9 is configured to control the lip driving unit according to the pressure signal transmitted by the pressure transmitter 8, so that the size of the opening of the lip assembly reaches a preset value.
In this embodiment, the lip driving unit is used for controlling the size of the opening of the lip assembly, the pressure transmitter 8 is used for detecting the pressure of the flow channel, the pressure transmitter 8 is electrically connected with the controller 9 and transmits a pressure signal to the controller 9, and the controller 9 is configured to control the lip driving unit according to the pressure signal transmitted by the pressure transmitter 8, so that the size of the opening of the lip assembly reaches a preset value. Therefore, when the machine is started, a proper lip opening can be set, and the water flow of the head box 3 is properly reduced; when the pressure change of the flow channel exceeds a certain value, the controller 9 triggers the primary pulp flowing box 3 to press the lip plate, and the lip plate driving unit automatically adjusts the opening of the lip plate to reach a set value of the lip plate. The opening degree of the lip plate is constant in the water mixing process when the paper machine is started, the water mixing flow change is reduced, the flow balance of the pulp is achieved, and the forming rate of the flowing water mixing is guaranteed.
In some embodiments, as shown in fig. 1, the production equipment of the craft paper further comprises a breast roll 2 and a forming roll 5, wherein the breast roll 2 is arranged above the forming roll 5, a gap is left between the breast roll 2 and the forming roll 5, and the opening of the lip plate assembly is arranged opposite to the gap. In this way, the breast roll 2 and the forming roll 5 are matched with each other to extrude and form the pulp.
In some embodiments, the production equipment of the craft paper further comprises a composite roll 7, and the composite roll 7 is arranged at the rear end of the forming roll 5. The compound roll 7 is used for flattening the slurry.
In some embodiments, the production equipment of the craft paper further comprises a surface net 1 and a bottom net 4, wherein a breast roll 2 is used for driving the surface net 1 to move, a forming roll 5 is used for driving the bottom net 4 to move, and a head box 3 is used for spraying slurry between the surface net 1 and the bottom net 4. At the moment, the machine design is normal production and two-layer dehydration proportion is designed, at the moment, slurry is arranged between the clamping areas of the surface net 1 and the bottom net 4 to net, and the dehydration of the surface layer and the bottom layer can be balanced according to the design proportion.
In some embodiments, as shown in fig. 2 and 3, the lip assembly includes an upper lip 14 and a lower lip 20, the upper lip 14 is disposed above the lower lip 20, and an opening is formed between the upper lip 14 and the lower lip 20. Thus, the distance between the upper lip 14 and the lower lip 20 can be controlled, the opening of the opening can be controlled, and the flow rate of the slurry can be adjusted.
In some embodiments, the lip driving unit includes a lip motor 16 and an upper lip connecting mechanism 15, the lip motor 16 is in transmission connection with the upper lip 14 through the upper lip connecting mechanism 15, and the lip motor 16 is used for controlling the distance between the upper lip 14 and the lower lip 20. Therefore, the distance between the upper lip 14 and the lower lip 20 can be controlled by the lip motor 16, and the use is convenient.
In some embodiments, a pressure transducer 8 is disposed within the flow passage, the pressure transducer 8 being configured to detect a change in pressure within the flow passage. Therefore, the pressure transmitter 8 is arranged in the flow channel, so that the pressure change in the flow channel can be detected, and the pressure detection is convenient.
In some embodiments, the kraft liner production facility includes more than two pressure transmitters 8, one pressure transmitter 8 being disposed in each flow channel. In this embodiment, the head box 3 includes a surface layer slurry distribution flow passage 18 and a bottom layer slurry distribution flow passage 19, and a pressure transmitter 8 is disposed in both the surface layer slurry distribution flow passage 18 and the bottom layer slurry distribution flow passage 19. Thus, as long as the pressure change in any one flow channel exceeds a preset value, the lip driving unit can be triggered to control the opening of the lip assembly. The principle is that the opening of the lip plate assembly is large, the flow of slurry is increased, and the pressure in the flow channel is reduced; on the contrary, the opening of the lip assembly is reduced, the flow rate of the slurry is reduced, and the pressure in the flow channel is increased.
In some embodiments, the kraft paper production facility further comprises a water supply pipeline 17, and the water supply pipeline 17 is communicated with the flow channel. In this way, water can be supplied to the pulp through the water supply pipe 17, maintaining the production of the craft paper.
In this embodiment, the lip assembly is disposed in the headbox box 13, and the headbox box 13 is used to protect the lip assembly.
In some embodiments, as shown in FIG. 4, a pressure transducer 8 is used to sense the pressure of the flow passage; the pressure transmitter 8 is electrically connected with the controller 9, the controller 9 is electrically connected with the lip motor 16, the pressure transmitter 8 transmits a pressure signal to the controller 9, the controller 9 controls the lip motor 16 according to the pressure signal transmitted by the pressure transmitter 8, and finally the size of the opening of the lip assembly reaches a preset value.
The operational principle of the production equipment of the craft paper of the embodiment is as follows:
before adding a control program: according to the former starting experience of a machine, when the opening degree of the upper lip 14 and the lower lip 20 is set to be 10mm, no lip control program is added, when the speed of the dampening system is increased from 1000m/min to 1300m/min, the lip is controlled by the lip motor 16, the pressure of the inner cavity of the head box 3 is increased, the opening degree of the upper lip 20 and the lower lip 20 can be increased from 10mm to 15mm, the dampening system flow change is changed from 48000L/min to 106000L/min, the change rate reaches 121%, and the increased two-layer difference flow is 2900L/min-5800L/min.
After the addition of the constant lip procedure: the opening degree of the lip plate is constant and 10mm, when the water mixing speed is increased from 1000m/min to 1300m/min, the pressure head of the headbox 3 is increased from 145kpa to 250kpa, the pressure head change difference is 105kpa, the lip plate motor 16 is triggered to act once when the pressure head changes 20kpa, the opening degree of the lip plate is pressed to 10mm, the opening degree of the lip plate is constantly controlled to be about 10mm, the change of the water mixing flow is calculated to be changed from 48000L/min to 62000L/min, the change rate is only 29%, the increased two-layer difference flow is 700L/min-1400L/min, the difference is greatly reduced, the process control can be carried out by properly supplementing clear water, and the balance of the two-layer water mixing can be maintained.
The difference prior art, the face bottom layer drifting system is independent separately in this embodiment, can use different thick liquids, is fit for 3 double-channel head box and presss from both sides net paper machine production liner paper, is particularly suitable for the fine dried noodle ox card. Through remote automatic control lip board aperture, adjust the lip board cluster water yield, and then control two-layer drifting water yield distribution guarantee cluster water success rate. The water flow variation of the water flow mixing pulp tank 3 can be greatly reduced, the difference of water flow of two layers is reduced, and the water mixing success rate of the paper machine is improved.
It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.
Claims (9)
1. A production facility of craft paper is characterized by comprising
The head box comprises more than two flow channels, a lip assembly and a lip driving unit, wherein the lip assembly is provided with an opening for allowing liquid to pass through, the more than two flow channels are communicated with the opening of the lip assembly, and the lip driving unit is used for controlling the size of the opening of the lip assembly;
the pressure transmitter is used for detecting the pressure of the flow channel; and
and the controller is arranged to control the lip driving unit according to the pressure signal transmitted by the pressure transmitter so that the size of the opening of the lip assembly reaches a preset value.
2. The apparatus according to claim 1, wherein the lip assembly comprises an upper lip and a lower lip, the upper lip is disposed above the lower lip, and the opening is formed between the upper lip and the lower lip.
3. The craft paper production apparatus of claim 2, wherein the lip driving unit includes a lip motor and an upper lip connecting mechanism, the lip motor is in transmission connection with the upper lip through the upper lip connecting mechanism, and the lip motor is used for controlling the distance between the upper lip and the lower lip.
4. A kraft paper producing apparatus according to claim 3, wherein the pressure transmitter is provided in the flow channel, the pressure transmitter being configured to detect a change in pressure in the flow channel.
5. The kraft liner production facility according to claim 4, wherein the kraft liner production facility includes two or more pressure transmitters, and one pressure transmitter is disposed in each flow channel.
6. The kraft paper production facility according to claim 1, further comprising a water supply pipeline, the water supply pipeline being in communication with the flow channel.
7. The craft paper production equipment of claim 1, wherein the craft paper production equipment further comprises a breast roll and a forming roll, the breast roll is arranged above the forming roll, a gap is left between the breast roll and the forming roll, and the opening of the lip plate assembly is arranged opposite to the gap.
8. A kraft paper production apparatus according to claim 7, further comprising a compound roller disposed at a rear end of the forming roller.
9. The kraft paper production facility according to claim 8, further comprising a top net and a bottom net, wherein the breast roll is used for driving the top net to move, the forming roll is used for driving the bottom net to move, and the head box is used for spraying slurry between the top net and the bottom net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121442161.8U CN215593494U (en) | 2021-06-28 | 2021-06-28 | Production facility of craft paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121442161.8U CN215593494U (en) | 2021-06-28 | 2021-06-28 | Production facility of craft paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215593494U true CN215593494U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121442161.8U Active CN215593494U (en) | 2021-06-28 | 2021-06-28 | Production facility of craft paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215593494U (en) |
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2021
- 2021-06-28 CN CN202121442161.8U patent/CN215593494U/en active Active
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