Broken paper disc mill switching management system

Abstract

The utility model discloses a broken paper disc mill switching management system which comprises a broken paper disc mill workshop and a core pulp disc mill workshop, two broken paper grinding discs are arranged in the broken paper disc mill workshop, and a broken paper feeding control valve for controlling feeding on-off is arranged on a feeding pipeline of each broken paper grinding disc. A first switching control valve and a second switching control valve are respectively connected between the feeding pipelines and the discharging pipelines of the two broken paper grinding discs through pipelines; a core pulp disc mill is arranged in the core pulp disc mill workshop, and a branch material distributing pipeline and a branch material returning pipeline which are used for conveying broke pulp to a disc mill at a material inlet and a material outlet of the core pulp disc mill when one of the two broke millstones is maintained are connected in series on a pipeline between the first switching control valve and the second switching control valve in a branch manner; a third switching control valve is connected between the branch material distributing pipeline and the branch material returning pipeline through a pipeline; through the control valve, switching replacement between the broken paper disc mill and the core pulp disc mill in broken paper processing is achieved.

Description

[Technical field]

[0001] The utility model relates to a broken paper processing technology, in particular to a broken paper grinding disc switching management system. [Background technology]

[0002] In the process of papermaking, the pulping disc refiner grinds the pulp plate by the rotation of the moving disc, that is, it enters the tooth grooves of the inner circle of the rotating grinding disc from the center of the disc refiner and makes radial circular motion. Most of the pulp is driven by the rotating moving disc and enters the tooth grooves of the fixed disc at high speed in a turbulent flow, and flows outward along the tooth grooves, and then is blocked by the closed circle or dam of the fixed disc, and then thrown to the tooth grooves of the moving disc, so that the wood chips are separated into fine pulp. An outstanding advantage of the disc refiner is that it can be used to achieve high-concentration continuous pulping and pulping (concentration above 20% to 30%), which can effectively improve the pulping quality.

[0003] In the existing papermaking of broken paper, due to the limitation of production space, only two disc refiners are equipped, one main and one standby. In the previous production, only one disc refiner was started as the main machine, and the other was used as a substitute for maintenance or insufficient production capacity. However, with the development of production, the requirements for paper quality are getting higher and higher, and the requirements for the broken paper beating degree in pulping are also getting higher and higher, resulting in the two existing broken paper disc refiners running at full capacity. In this case, when one of the disc refiners needs to replace the grinding plate or needs maintenance, only one disc refiner can be started. The broken paper beating degree of one disc refiner cannot be increased, which will affect the interlayer bonding force of the finished paper. In severe cases, defective products will appear, resulting in customer complaints about the finished paper products. Therefore, it is urgent to improve the existing broken paper disc refiner system to effectively improve production efficiency. [Contents of the utility model]

[0004] The utility model provides a broken paper disc grinding switching management system, which switches the core pulp disc grinding and the broken paper disc grinding for use in broken paper processing according to production characteristics, effectively overcoming the insufficient capacity of the broken paper disc grinding and improving the production efficiency and production quality of broken paper.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A broke paper grinding disc switching management system is used for switching between a broke paper grinding disc and a core pulp grinding disc in broke paper processing, comprising a broke paper grinding disc workshop and a core pulp grinding disc workshop, wherein two broke paper grinding discs are arranged in the broke paper grinding disc workshop, and all the broke paper grinding discs are connected in series through pipelines;

[0007] A broken paper feeding control valve for controlling the on-off of feeding is arranged on the feeding pipeline of each broken paper grinding disc, and a broken paper discharging control valve for controlling the on-off of discharging is arranged on the discharging pipeline of each broken paper grinding disc;

[0008] The inlet pipeline and the outlet pipeline of the two broken paper grinding discs are respectively connected through pipelines with a first switching control valve and a second switching control valve for controlling pipeline switching when the corresponding broken paper grinding discs are shut down for maintenance;

[0009] A core pulp disc mill is provided in the core pulp disc mill workshop, and a core pulp inlet control valve and a core pulp outlet control valve for controlling the on-off of the pipelines are respectively provided on the inlet pipeline and the outlet pipeline of the core pulp disc mill;

[0010] The pipeline between the first switching control valve and the second switching control valve is branched in series with a branch distribution pipeline and a branch return pipeline for conveying the broken paper pulp in the broken paper grinding workshop to the core pulp grinding workshop for grinding at the inlet and outlet of the core pulp grinding workshop when one of the two broken paper grinding discs is maintained. The branch distribution pipeline and the branch return pipeline are respectively provided with a branch feed control valve and a branch discharge control valve for controlling the on-off of the feed and discharge. The branch distribution pipeline and the branch return pipeline are connected to a third switching control valve for controlling the pipeline switching when the corresponding core pulp grinding disc is shut down through a pipeline.

[0011] Preferably, the broken paper feeding control valve and the broken paper discharging control valve are both mechanical control valves that manually control the on-off of the pipeline.

[0012] Preferably, the core slurry inlet control valve and the core slurry outlet control valve are both mechanical control valves that manually control the on-off of the pipeline.

[0013] Preferably, the first switching control valve, the second switching control valve and the third switching control valve are all mechanical control valves for manually controlling the on-off of the pipeline.

[0014] The beneficial effects of the utility model are:

[0015] According to the production characteristics, through the switching control of the first switching control valve, the second switching control valve and the third switching control valve, when one of the two broken paper grinding discs in the broken paper grinding disc workshop is maintained, the broken paper pulp in the broken paper grinding disc workshop is transported to the core pulp grinding disc in the core pulp grinding disc workshop for processing, thereby effectively utilizing idle equipment, effectively overcoming the insufficient production capacity of the broken paper grinding disc, and effectively improving the production quality and production efficiency of the broken paper pulp.

Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the system principle of the utility model. [Specific implementation method]

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] A broke paper disc grinding switch management system is used for switching between a broke paper disc grinding and a core pulp disc grinding 8 in broke paper processing, such as Figure 1 As shown, it includes a broken paper grinding workshop 1 and a core pulp grinding workshop 8 2. Two broken paper grinding discs 3 are arranged in the broken paper grinding workshop 1, and all the broken paper grinding discs 3 are connected in series through pipelines; a broken paper feeding control valve 4 for controlling the on-off of feeding is arranged on the feeding pipeline of each broken paper grinding disc 3, and a broken paper discharging control valve 5 for controlling the on-off of discharging is arranged on the discharging pipeline of each broken paper grinding disc 3; the feeding pipelines and the discharging pipelines of the two broken paper grinding discs 3 are respectively connected through pipelines with a first switching control valve 6 and a second switching control valve 7 for controlling the pipeline switching control when the corresponding broken paper grinding disc 3 is shut down for maintenance.

[0019] Continue as Figure 1 As shown, a core pulp disc mill 8 is arranged in the core pulp disc mill 8 workshop 2, and a core pulp feed control valve 9 and a core pulp discharge control valve 10 for controlling the on-off of the pipeline are respectively arranged on the feed pipeline and the discharge pipeline of the core pulp disc mill 8, and a branch distribution pipeline 11 and a branch return pipeline 12 are connected in series on the pipeline between the first switching control valve 6 and the second switching control valve 7, which are used to transport the broken paper pulp in the broken paper disc mill workshop 1 to the core pulp disc mill 8 at the inlet and outlet of the core pulp disc mill 8 in the core pulp disc mill workshop 2 when one of the two broken paper grinding discs 3 is maintained, and the branch distribution pipeline 11 and the branch return pipeline 12 are respectively provided with a branch feed control valve 13 and a branch discharge control valve 14 for controlling the on-off of the feed and discharge, and a third switching control valve 15 for controlling the pipeline switching control when the corresponding core pulp disc mill 8 is shut down is connected between the branch distribution pipeline 11 and the branch return pipeline 12 through a pipeline.

[0020] In this embodiment, the broken paper feed control valve 4 and the broken paper discharge control valve 5 are both mechanical control valves for manually controlling the on-off of the pipeline, the core pulp feed control valve 9 and the core pulp discharge control valve 10 are both mechanical control valves for manually controlling the on-off of the pipeline, and the first switching control valve 6, the second switching control valve 7 and the third switching control valve 15 are all mechanical control valves for manually controlling the on-off of the pipeline.

[0021] In this embodiment, according to the production characteristics, when one of the two broken paper grinding discs 3 in the broken paper grinding disc workshop 1 is maintained, the broken paper feed control valve 4, the broken paper discharge control valve 5, the core pulp feed control valve 9 and the core pulp discharge control valve 10 are closed corresponding to their respective inlet and outlet pipelines, and the broken paper pulp in the broken paper grinding disc workshop 1 is transported to the core pulp grinding disc 8 in the core pulp grinding disc workshop 8 for processing through the automatic switching control of the first switching control valve 6, the second switching control valve 7, or the third switching control valve 15, and the branch feed control valve 13 and the branch discharge control valve 14 are opened, so as to effectively utilize the idle equipment in the core pulp grinding disc workshop 8 and effectively improve the production efficiency of the broken paper pulp.

[0022] The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes made based on the shape, structure and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A broke paper disc refining switching management system, used for switching between broke paper disc refining and core pulp disc refining in broke paper processing, characterized in that: It includes a broken paper disc grinding workshop and a core pulp disc grinding workshop, wherein the broken paper disc grinding workshop is provided with two broken paper grinding discs, and all the broken paper grinding discs are connected in series through pipelines; A broken paper feeding control valve for controlling the on-off of feeding is arranged on the feeding pipeline of each broken paper grinding disc, and a broken paper discharging control valve for controlling the on-off of discharging is arranged on the discharging pipeline of each broken paper grinding disc; The inlet pipeline and the outlet pipeline of the two broken paper grinding discs are respectively connected through pipelines with a first switching control valve and a second switching control valve for controlling pipeline switching when the corresponding broken paper grinding discs are shut down for maintenance; A core pulp disc mill is provided in the core pulp disc mill workshop, and a core pulp inlet control valve and a core pulp outlet control valve for controlling the on-off of the pipelines are respectively provided on the inlet pipeline and the outlet pipeline of the core pulp disc mill; The pipeline between the first switching control valve and the second switching control valve is branched in series with a branch distribution pipeline and a branch return pipeline for conveying the broken paper pulp in the broken paper grinding workshop to the core pulp grinding workshop for grinding at the inlet and outlet of the core pulp grinding workshop when one of the two broken paper grinding discs is maintained. The branch distribution pipeline and the branch return pipeline are respectively provided with a branch feed control valve and a branch discharge control valve for controlling the on-off of the feed and discharge. The branch distribution pipeline and the branch return pipeline are connected to a third switching control valve for controlling the pipeline switching when the corresponding core pulp grinding disc is shut down through a pipeline.

2. A broke disc grinding switch management system according to claim 1, characterized in that: The broken paper feeding control valve and the broken paper discharging control valve are both mechanical control valves that manually control the on-off of the pipeline.

3. A broke disc grinding switch management system according to claim 1, characterized in that: The core slurry inlet control valve and the core slurry outlet control valve are both mechanical control valves that manually control the on-off of the pipeline.

4. A broke disc grinding switch management system according to claim 1, characterized in that: The first switching control valve, the second switching control valve and the third switching control valve are all mechanical control valves that manually control the on-off of the pipeline.

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