Broken paper processing system and method for preventing the overflow of the broken paper tank in the rear stage by using the system
A technology of paper processing and back stage, applied in the field of broken paper processing system, to achieve the effect of preventing overflow
Active Publication Date: 2019-02-12
UPM CHINA
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[0011] However, as previously mentioned, since the flow rate of the rewinder 3 entering the broken paper tank 1 in the back stage is not higher than 120 liters per second when the rewinder 3 is in normal operation, the flow rate entering the broken paper tank 1 in the rear stage is 100 liters / second when the large slitting knife 4 is in normal operation. liters per second, while the capacity of the high-frequency deflaker 2 to process pulp is usually only 75 liters per second, so the inflow of the inlet section of the broken paper tank 1 in the rear section is much greater than the outflow of the outlet section of the broken paper tank 1 in the rear section, thus lead to overflow
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[0036] The preferred embodiments of the broken paper handling system and the method for preventing the overflow of the broken paper trough in the rear stage by using the broken paper handling system of the present invention will be described below in conjunction with the accompanying drawings, wherein the same reference numerals identify the same part.
[0037] figure 2 It is a schematic diagram of the connection of various components in the broken paper processing system of the present invention. See figure 2 , it can be seen that the connection relationship between the broken paper tank 1 in the rear section and the rewinder 3, the large knife 4 and the high-frequency deflattering machine 2 is basically the same as that of the traditional broken paper processing system. Specifically, one end of the broken paper tank 1 in the rear segment is also connected with the rewinder 3 and the large cutting knife 4 respectively, so as to receive the returned products from the rewin...
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The invention relates to a broke disposal system and a method for preventing back-section broke groove overflow by using the broke disposal system. The broke disposal system comprises the back-section broke groove (1); a rewinder (3) and a large cutting knife (4), wherein one end of the back-section broke groove is respectively communicated with the rewinder and the large cutting knife so as to simultaneously receive recycled products generated from the rewinder and the large cutting knife; a deflaker (2), wherein the other end of the back-section broke groove is communicated with the deflaker so as to discharge the received recycled products to the deflaker for defibering. The broke disposal system is further provided with a liquid level interlock control unit. The liquid level interlock control unit is used for detecting the liquid level of the back-section broke groove, and controlling the large cutting knife to be operated according to the detected liquid level. While the liquid level in the back-section broke groove is higher than the set upper limit of the volume of the back-section broke groove, the operation of the large cutting knife can be stopped, and the inflow volume of the inlet section of the back-section broke groove does not exceed the outflow volume of the outlet section of the back-section broke groove, so the overflow situation is prevented to be generated.
Description
technical field [0001] The present invention relates to a broken paper processing system on the one hand, and relates to a method for preventing overflow of a broken paper tank at a rear stage by utilizing the broken paper processing system. Background technique [0002] Broken paper produced in the papermaking process is usually divided into dry damage and wet damage. [0003] Dry damage refers to the damaged paper produced in and after the cadre of the paper machine, including: waste paper produced by the cadre when the paper machine breaks; paper edges cut after soft pressing and rewinding; paper rolls, rewinding, and packaging Waste paper produced; and defective products with quality problems in the papermaking process. Usually, after the dry damage has passed through the dry damage pulper, it will go through the deflaking and refining process to realize the back copying. [0004] Wet damage refers to broken paper produced in the wet section of a paper machine (eg, wir...
Claims
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IPC IPC(8): D21G9/00D21F1/66D21F7/00D21B1/34D21B1/32D21D1/30
CPCD21B1/32D21B1/345D21D1/30Y02W30/64
Inventor 金志强程江娜
Owner UPM CHINA