CN219079964U

CN219079964U - Starch spraying system capable of improving binding force of fibers in gray-bottom white board paper pulp

Info

Publication number: CN219079964U
Application number: CN202221992357.9U
Authority: CN
Inventors: 黎桂华; 董福兴
Original assignee: Dongguan Jianhui Paper Co Ltd
Current assignee: Dongguan Jianhui Paper Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-05-26
Anticipated expiration: 2032-07-29

Abstract

A starch spraying system capable of improving the binding force of fibers in ash bottom whiteboard paper pulp comprises a batching device, a storage tank, a filter, a reflux device, a spraying device and a steam device, wherein the steam device is connected to the batching device to heat and gelatinize slurry; the reflux device is connected with the spraying device and the storage tank, and the devices are connected through pipelines; the batching device comprises a feed bin, a blanking spiral feeding device, a dissolving tank and a clear water supply device, wherein the blanking spiral feeding device is arranged right below the feed bin and extends into the dissolving tank, and the clear water supply device is connected into the dissolving tank; a stirring device is arranged in the dissolving tank, a weighing device is arranged at the outer side of the dissolving tank, and the weighing device is connected with the blanking spiral feeding device in a signal way; the steam device is connected with the dissolving tank, a tank stirring device is arranged in the tank, the dissolving tank is connected with the tank through a pipeline, and a bypass valve is arranged on the connecting pipeline.

Description

Starch spraying system capable of improving binding force of fibers in gray-bottom white board paper pulp

Technical Field

The utility model relates to the technical field of papermaking, in particular to a starch spraying system capable of improving the binding force of fibers in ash bottom white board pulp.

Background

The grey base coated white board paper comprises a surface layer, a surface lining layer, a core layer, a bottom lining layer and a bottom layer, and the different layers are respectively processed and produced by different nets of different materials, so that the binding force between the layers is weaker, and the problem of layering easily occurs in the use process of the finished paper. In order to solve the above problems, it is generally necessary to spray a starch layer between the layers to effectively improve the bonding force between the layers. The traditional starch spraying method is to add a corresponding spraying device at the position between each layer of the layers to be sprayed, and the slurry of the spraying device is prepared manually (i.e. starch and clear water are added manually and then stirred manually). The manual configuration has more human experience factors, so that the accuracy is poor and the working efficiency is low. In addition, in the starch gelatinization process, the temperature and the material adding time are required, and the material is added after the material adding delay or the temperature does not reach the required value in the manual operation, so that the starch gelatinization effect is poor, and the bonding force of the finally prepared fibers in the pulp is poor. In addition, traditional manual configuration can produce more dust, and is unfavorable to the manual health, and can deposit more dust on equipment, influences the equipment cleanliness.

Disclosure of Invention

Therefore, the utility model aims to provide a starch spraying system capable of improving the binding force of fibers in ash-bottom whiteboard paper pulp.

The starch spraying system capable of improving the binding force of fibers in the white board pulp at the ash bottom comprises a batching device, a storage tank, a filter, a reflux device, a spraying device and a steam device, wherein the batching device, the storage tank, the filter and the spraying device are sequentially connected, and the steam device is connected to the batching device to heat and gelatinize the pulp; the reflux device is connected with the spraying device and the storage tank, and the devices are connected through pipelines; the batching device comprises a feed bin, a blanking spiral feeding device, a dissolving tank and a clear water supply device, wherein the blanking spiral feeding device is arranged right below the feed bin and extends into the dissolving tank, and the clear water supply device is connected into the dissolving tank; a stirring device is arranged in the dissolving tank, a weighing device is arranged at the outer side of the dissolving tank, and the weighing device is connected with the blanking spiral feeding device in a signal way; the steam device is connected to the dissolving tank, a tank stirring device is arranged in the tank, the dissolving tank is connected to the tank through a connecting pipeline, and a bypass valve is arranged on the connecting pipeline.

Further, the traveling crane is arranged above the storage bin, the hanging hook capable of moving along the traveling crane is arranged on the traveling crane, the powder material bag is hung on the hanging hook, and the traveling crane moves the powder to the position right above the storage bin.

Further, a liquid level device and an alarm are arranged in the storage tank, and the liquid level device detects the liquid level on line and gives an alarm against abnormality in real time.

Further, the clean water supply device comprises a water supply pipe, a flowmeter and a switch valve, wherein the flowmeter and the switch valve are arranged on the water supply pipe, one end of the water supply pipe is connected to an external water source, and the other end of the water supply pipe is connected to the dissolution tank.

Further, a main pipeline and two pump branches are further arranged between the storage tank and the filter, the two pump branches are connected to the main pipeline, the main pipeline is connected to the storage tank, the two pump branches are connected to the filter, and a liquid pump is arranged on the pump branches.

Further, the spraying device comprises a main pipe and a plurality of branch pipes connected to the main pipe, and the main pipe is connected to the filter; the free end of the branch pipe is provided with a spray header.

Further, the reflux device comprises a reflux pipe, a pressure transmitter and a reflux valve which are arranged on the reflux pipe, and the reflux pipe is connected with a main pipe of the spraying device and the storage tank.

Further, the spraying device is also connected with a dilution pipeline, the dilution pipeline is provided with a flowmeter and a switch, and the dilution pipeline is connected with the main pipe

In summary, the starch spraying system provided by the utility model adopts full-automatic equipment with higher automation degree to replace manual blending and adding, thus not only greatly improving the working efficiency and reducing the manual labor intensity, but also greatly improving the slurry accuracy, gelatinization effect and product quality. In addition, the starch powder spraying system adopts a closed structure except for the top opening of the storage bin, so that the dust generation rate in the air in the production process is greatly reduced, and the problems that dust is accumulated on the equipment and the cleanliness of the equipment is affected are avoided; the utility model has strong practicability and has stronger popularization significance.

Drawings

FIG. 1 is a schematic flow diagram of a starch spraying system for improving the binding force of fibers in gray-bottom whiteboard pulp.

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 starch spraying system capable of improving the binding force of fibers in the pulp of a white board with ash bottom, which comprises a batching device 10, a storage tank 20, a filter 30, a reflux device 40, a spraying device 50 and a steam device 60, wherein the batching device 10, the storage tank 20, the filter 30 and the spraying device 50 are sequentially connected, and the steam device 60 is connected to the batching device 10 to heat and gelatinize the pulp; the reflux device 40 is connected with the spraying device 50 and the storage tank 20, and the devices are connected through pipelines.

The batching device 10 comprises a bin 11, a blanking spiral feeding device 12, a dissolving tank 13 and a clear water supply device, a travelling crane (not shown) is arranged above the bin 11, a hook capable of moving along the travelling crane is arranged on the travelling crane, and during production, a powder material bag is hung on the hook, and the hook moves powder to the position right above the bin 11; the lower part of the outer bag of the material bag is bound with a bag opening by a binding belt, and when powder is required to be put in, the bag opening is opened to enable the powder to fall into the storage bin 11. The powder in the bin 11 falls onto the discharging spiral feeding device 12, and the feeding device 12 conveys and puts the powder into the dissolving tank 13.

The dissolving tank 13 is internally provided with a stirring device 131, the outer side of the dissolving tank 13 is provided with a weighing device 132, and the weighing device 132 is in signal connection with the blanking spiral feeding device 12. When the weighing device 132 is used, the weight of powder to be added is set firstly, and when the powder is added into the dissolving tank 13, the weighing device 132 can automatically weigh until the powder is added to the required weight, the weighing device 132 sends a signal to the blanking spiral feeding device 12, and the blanking spiral feeding device 12 stops running; thereby ensuring powder weight accuracy.

The steam device 60 is connected to the dissolution tank 13, and the steam device 60 fills the dissolution tank 13 with hot steam to raise the temperature in the dissolution tank 13. The clean water supply device comprises a water supply pipe 14, a flowmeter and a switch valve, wherein the flowmeter and the switch valve are arranged on the water supply pipe 14, one end of the water supply pipe 14 is connected to an external water source, and the other end of the water supply pipe 14 is connected to the dissolution tank 13. The flowmeter is used for measuring water flow, and when the water flow reaches a demand value, the switch valve is closed to stop water input. The dissolution tank 13 is also provided with a drain pipe 133, and the drain pipe 133 is provided with a switch valve, and the switch valve is in a closed state when no drain is needed. The dissolution tank 13 is further provided with a bypass pipeline 134 communicated with the storage tank 20, the bypass pipeline 134 is provided with a bypass valve, and slurry in the dissolution tank 13 is led into the storage tank 20 through the bypass pipeline 134.

The storage tank 20 is internally provided with a storage tank stirring device 21 and a liquid level device 22, and the storage tank stirring device 21 is used for continuously stirring the slurry so as to prevent the slurry from agglomerating and affecting the spraying effect. The level gauge 22 is used to monitor the slurry level in real time so that the slurry level remains above the lowest level at all times. Still be provided with main pipeline 31 and two pump branching 32 between storage tank 20 and the filter 30, two pump branching 32 all are connected on main pipeline 31, main pipeline 31 is connected on storage tank 20, two pump branching 32 all connect in on the filter 30, be provided with the drawing liquid pump on the pump branching 32. When in operation, one of the pump branches 32 is started, and when the pump branch 32 is abnormal, the other pump branch 32 is started; to ensure continuous production. In addition, a flowmeter is arranged on the rear side pipeline of the filter 30.

The spraying device 50 comprises a main pipe 51 and a plurality of branch pipes 52 connected to the main pipe 51, wherein spraying heads (not shown) are installed at the free ends of the branch pipes 52, and the spraying heads respectively spray starch slurry on corresponding surface layers, lining layers, core layers, bottom lining layers and bottom layer areas. The reflux device 40 comprises a reflux pipe 41, a pressure transmitter and a reflux valve which are arranged on the reflux pipe 41, and the reflux pipe 41 is connected with a main pipe 51 of the spraying device 50 and the storage tank 20; when the spraying is finished, the surplus slurry in the spraying device 50 flows into the tank 20 via the return pipe 41. In addition, a dilution pipe 71 is connected to the spraying device 50, and a flow meter and a switch are arranged on the dilution pipe 71, and the dilution pipe 71 can supply dilution water to the spraying device 50 so as to dilute the slurry in the spraying device 50.

In operation, the steam device 60 fills the dissolution tank 13 with steam to raise the temperature in the dissolution tank 13 to 85 ℃, then the powder is conveyed into the dissolution tank 13 by the discharging screw 12, and the starch is weighed by the weighing device 132 to ensure the accuracy of the weight of the substance. When the powder reaches the required amount, the discharging screw 12 stops. The on-off valve of the water supply pipe 14 is opened, clean water is supplied to the dissolution tank 13 according to the set flow, and when the required amount is reached, the on-off valve is closed. The steam device is continuously heated to 105-135 ℃ to continuously carry out gelatinization with 5-8% of gelatinization concentration. Stirring by a stirring device 131 in the dissolution tank 13 to fully combine starch and clear water for dissolution and gelatinization, and stirring uniformly. The slurry is conveyed into the storage tank 30, filtered by the filter 30, and enters the main pipe 51 and the branch pipe 52 for spraying. When no shower production is required, the slurry is returned from the return pipe 41 to the tank 20.

In addition, during operation, the powder can be gelatinized in a gap, the powder is added into cold water to be regulated into slurry with the concentration of 5-6%, after the powder is uniformly stirred, the temperature of the dissolution tank 13 is raised to 85 ℃ by the steam device 60, the temperature is kept between 85 ℃ and 95 ℃ for 15-20 minutes, the cold water is added to dilute the slurry to about 3% for standby, the standby slurry is led into the storage tank 20 through the bypass pipeline 134, filtered by the filter 30 and then enters the spraying main pipe 51, and the diluting pipeline 71 supplies cold water into the spraying main pipe 51 to dilute the slurry to about 1.0%; and then the spraying branched pipes 52 are respectively sprayed on the corresponding areas of the surface layer, the surface lining layer, the core layer and the bottom lining layer.

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

1. A starch spraying system capable of improving the binding force of fibers in gray-bottom white board pulp is characterized in that: the device comprises a batching device, a storage tank, a filter, a reflux device, a spraying device and a steam device, wherein the batching device, the storage tank, the filter and the spraying device are sequentially connected, and the steam device is connected to the batching device to heat and gelatinize slurry; the reflux device is connected with the spraying device and the storage tank, and the devices are connected through pipelines; the batching device comprises a feed bin, a blanking spiral feeding device, a dissolving tank and a clear water supply device, wherein the blanking spiral feeding device is arranged right below the feed bin and extends into the dissolving tank, and the clear water supply device is connected into the dissolving tank; a stirring device is arranged in the dissolving tank, a weighing device is arranged at the outer side of the dissolving tank, and the weighing device is connected with the blanking spiral feeding device in a signal way; the steam device is connected to the dissolving tank, a tank stirring device is arranged in the tank, the dissolving tank is connected to the tank through a connecting pipeline, and a bypass valve is arranged on the connecting pipeline.

2. A starch spraying system for increasing the binding force of fibers in gray board pulp as recited in claim 1, wherein: the automatic feeding device is characterized in that a travelling crane is arranged above the storage bin, a hook capable of moving along the travelling crane is arranged on the travelling crane, a powder material bag is hung on the hook, and the travelling crane moves the powder to the position right above the storage bin.

3. A starch spraying system for increasing the binding force of fibers in gray board pulp as recited in claim 1, wherein: the liquid level device and the alarm are arranged in the storage tank, and the liquid level device detects the liquid level on line and gives an alarm against abnormality in real time.

4. A starch spraying system for increasing the binding force of fibers in gray board pulp as recited in claim 1, wherein: the clean water supply device comprises a water supply pipe, a flowmeter and a switch valve, wherein the flowmeter and the switch valve are arranged on the water supply pipe, one end of the water supply pipe is connected to an external water source, and the other end of the water supply pipe is connected to the dissolution tank.

5. A starch spraying system for increasing the binding force of fibers in gray board pulp as recited in claim 1, wherein: the filter is characterized in that a main pipeline and two pump branches are further arranged between the storage tank and the filter, the two pump branches are connected to the main pipeline, the main pipeline is connected to the storage tank, the two pump branches are connected to the filter, and a liquid pump is arranged on the pump branches.

6. A starch spraying system for increasing the binding force of fibers in gray board pulp as recited in claim 1, wherein: the spraying device comprises a main pipe and a plurality of branch pipes connected to the main pipe, and the main pipe is connected to the filter; the free end of the branch pipe is provided with a spray header.

7. The starch spraying system for improving the binding force of fibers in gray board pulp as recited in claim 6, wherein: the reflux device comprises a reflux pipe, a pressure transmitter and a reflux valve which are arranged on the reflux pipe, and the reflux pipe is connected with a main pipe of the spraying device and the storage tank.

8. The starch spraying system for improving the binding force of fibers in gray board pulp as recited in claim 6, wherein: the spraying device is also connected with a dilution pipeline, the dilution pipeline is provided with a flowmeter and a switch, and the dilution pipeline is connected to the main pipe.