CN203715986U - Intermediate concentration pulping and feeding device with stable pulping strength - Google Patents
Intermediate concentration pulping and feeding device with stable pulping strength Download PDFInfo
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- CN203715986U CN203715986U CN201420049052.3U CN201420049052U CN203715986U CN 203715986 U CN203715986 U CN 203715986U CN 201420049052 U CN201420049052 U CN 201420049052U CN 203715986 U CN203715986 U CN 203715986U
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Abstract
The utility model discloses an intermediate concentration pulping and feeding device with stable pulping strength. The device comprises a flow control system, a pulp feeding pipe, a buffer pipe and an overflow pipe, wherein the feeding end of the buffer pipe is connected with the discharge opening of an intermediate-concentration pulp pump through the pulp feeding pipe; the discharge end of the buffer pipe is connected with the feeding opening of the intermediate-concentration disk mill; the feeding end of the buffer pipe is an expansion opening of which the inside diameter turns from small to large; the discharge end of the buffer pipe is a shrinking opening of which the inside diameter turns from large to small; the included angle between the inclined wall of the expansion opening of the feeding end and the central axis of the buffer pipe is 15 to 45 degrees; the included angle between the inclined wall of the shrinking opening of the discharge end and the central axis of the buffer pipe is 15 to 45 degrees. The real-time pulping strength is calculated in real time by the flow control system according to the work efficiency of the intermediate-concentration disk mill and detecting the paper pulp flow passing through the disk mill in real time, so that the ratio of the real-time pulping strength to the set pulping strength is controlled to be 95 to 105 percent. By the intermediate concentration pulping and feeding device with the stable pulping strength, the disk mill can perform pulping under the stable pulping strength, so that a stable pulping effect can be achieved.
Description
Technical field
The utility model relates to a kind of medium consistency refining feed arrangement, is specifically related to a kind of medium consistency refining feed arrangement of stable making beating intensity, belongs to the making beating technical field of pulping and paper-making.
Background technology
Between the movable grinding disc of the disc mill that making beating adopts and fixed millstone, form mill district, paper pulp fiber by mill be squeezed when district, the effect of the mechanical force such as shearing, fibre morphology changes and obtains required characteristic, and to meet, paper machine is manufactured paper with pulp performance and the requirement of the paper performance of being manufactured paper with pulp.Desirable pulping process is to make fibrous raw material in pulping process, be subject to the processing of constant making beating intensity, to obtain character homogeneous, stable paper pulp fiber, ensures the stable physical property of the paper of manufacturing paper with pulp.When concentration one timing of paper pulp, making beating intensity depends on the power of disc mill motor in pulping process and the pulp flow by disc mill, if the power of disc mill and the flow of paper pulp all maintain in the excursion of permission of a setting in pulping process, or the power of disc mill motor and the ratio of pulp flow maintain in the excursion of permission of a setting, can ensure that disc mill pulls an oar under stable making beating intensity, and obtain stable beating results.
Medium consistency refining technology is the widely used making beating new technology in China paper mill in recent years, in dense disc mill in higher pulp density 6%～12% time making beating, under this concentration, the mobility of paper pulp is very poor, must carry with the supporting middle underflow pump that has the auxiliary equipment such as vavuum pump and turbulator.But in production application, during discovery employing middle underflow pump conveying slurry enters, dense disc mill exists pressure and the larger problem of flowed fluctuation of paper pulp, and the normal work of disc mill is caused to larger impact.Especially the working condition in producing is unstable, and while making the flow of paper pulp have certain fluctuation, middle underflow pump has amplified this fluctuation.Therefore, dense disc mill during the direct pumping paper pulp of employing middle underflow pump enters, due to by pulp pressure and the flow in dense disc mill mill district all there is larger fluctuation, in dense disc mill cannot under stable making beating intensity, pull an oar, refining process is difficult to control, defibrination quality and effect are unstable, thereby have affected the physical property of pulp property and the paper of manufacturing paper with pulp.
Chinese invention patent application application number provides a kind of voltage stabilization and current stabilization device for medium consistency refining charging for 200910192224.6, regulated to a certain extent middle underflow pump and in pulp pressure between dense disc mill and the pulsation of pulp flow.But the capacity of buffer is limited, and paper pulp is incompressible fluid, therefore still has fluctuation to a certain degree through pulp flow and the pressure of buffer; Meanwhile, the voltage stabilization and current stabilization device for medium consistency refining charging that this application provides, buffer and in the slurry control valve installed on pipeline between dense disc mill and pipeline expanded enter in the pressure of paper pulp and the degree of flowed fluctuation before dense disc mill.In addition,, in medium consistency refining process, the power of disc mill also can fluctuate.Making beating intensity suffered when these factors make paper pulp pass through disc mill above produces fluctuation, and affects the stability of beating results.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of medium consistency refining feed arrangement that ensures the stable making beating intensity that disc mill pulls an oar under stable making beating intensity is provided.
The purpose of this utility model is achieved through the following technical solutions:
A medium consistency refining feed arrangement for stable making beating intensity, comprises flow control system, pulp-inlet pipe, separator tube and overflow pipe; The feed end of described separator tube is connected with the discharging opening of middle underflow pump by pulp-inlet pipe, discharge end with in the charging aperture of dense disc mill be connected; Described overflow pipe is connected with the overfall on separator tube, the overfall on separator tube be arranged near feed end front 1/3 ?on the tube wall of 1/2 straight length; In described, the discharging opening of dense disc mill is connected with grout outlet;
The feed end of described separator tube is the extension mouth that internal diameter changes from small to big, and the discharge end of separator tube is internal diameter contraction mouth from large to small, and the angle of the skew wall of the extension mouth of feed end and separator tube central shaft is 15 °～45 °; The angle of the skew wall of the contraction mouth of discharge end and separator tube central shaft is 15 °～45 °;
The internal diameter of described separator tube is 2.5～4 times of pulp-inlet pipe internal diameter, and the internal diameter of separator tube be in 1.5～2.5 times of internal diameter of charging aperture of dense disc mill, the straight length axial length of separator tube is not less than 3 meters;
Described flow control system comprises flowmeter, enters to starch control valve, overflow control valve and Programmable Logic Controller; Flowmeter comprises first flow meter, the second flowmeter and the 3rd flowmeter; On described pulp-inlet pipe, be provided with and enter to starch control valve for what regulate middle underflow pump output pulp flow, on described overflow pipe, be provided with the overflow control valve for regulating paper pulp spillway discharge; On described pulp-inlet pipe, be provided with first flow meter, be provided with the second flowmeter on overflow pipe, be provided with the 3rd flowmeter on grout outlet, first flow meter, the second flowmeter and the 3rd flowmeter are all connected with Programmable Logic Controller; The 3rd flowmeter is connected with first flow meter.
For further realizing the utility model object, preferably, the overfall on described separator tube is arranged on the tube wall apart from the straight length at feed end end face 1/3 place.The internal diameter of described pulp-inlet pipe is 125mm, and the internal diameter of separator tube is 400mm, in the internal diameter of charging aperture of dense disc mill be 200mm.Described enter to starch control valve and overflow control valve is manual modulation valve or is automatic regulating valve; When entering to starch control valve and overflow control valve and being automatic regulating valve, enter to starch control valve and be connected with Programmable Logic Controller respectively with overflow control valve.Described first flow meter with enter to starch control valve and be connected; First flow meter is also connected with the second flowmeter, and the second flowmeter is connected with overflow control valve.
Compared with prior art, the utlity model has following advantage:
1, the utility model by flow control system detect in real time, controlling water kick amount and pass through in the pulp flow in dense disc mill mill district, the pulp beating power of disc mill and the ratio of the pulp flow by mill district are maintained in the excursion of permission of a setting, guarantee disc mill is pulled an oar under stable making beating intensity, and obtains stable beating results.
2, the utility model by arrange with in the separator tube that is directly connected of dense disc mill charging aperture and setting is connected with overflow pipe on separator tube overfall, make greatly to reduce by pressure and the flow pulsation of the paper pulp after separator tube, effectively reduced the pressure of paper pulp and the fluctuation of flow of dense disc mill in entering;
3, the utility model is set, is regulated the flow of paper pulp in pulp-inlet pipe, grout outlet and overflow pipe by flow control system, under stable making beating intensity, pull an oar and in obtaining stable beating results ensureing disc mill, reduce the frequency that middle underflow pump outlet valve regulates, middle underflow pump is moved under stable flow, and effectively reduced the pulsation of pulp flow and pressure.
Brief description of the drawings
Fig. 1 is the schematic diagram that the medium consistency refining feed arrangement of this stable making beating intensity is installed in medium consistency refining system.
Fig. 2 is the structural representation of the separator tube in Fig. 1.
Detailed description of the invention
For understanding better the utility model, below in conjunction with accompanying drawing, the utility model is described further, but embodiment of the present utility model is not limited to this.
As shown in Figure 1, 2, a kind of medium consistency refining feed arrangement of stable making beating intensity, comprises flow control system, pulp-inlet pipe 2, separator tube 3 and overflow pipe 4; The feed end 3 of described separator tube 3 ?1 be connected with the discharging opening of middle underflow pump 1 by pulp-inlet pipe 2, the discharge end of separator tube 33 ?2 with in the charging aperture of dense disc mill 5 be connected; Described overflow pipe 4 and overfall 3 on separator tube 3 ?3 be connected; In described, the discharging opening of dense disc mill 5 is connected with grout outlet 6;
The feed end 3 of separator tube 3 ?1 extension mouth changing from small to big for internal diameter, the discharge end 3 of separator tube 3 ?2 be internal diameter contraction mouth from large to small; The skew wall of the extension mouth of described feed end 3 ?1 and the included angle A of separator tube 3 central shafts are 15 °～45 °, as selected 45 °; The included angle B of the skew wall of the contraction mouth of discharge end 3 ?2 and separator tube 3 central shafts is 15 °～45 °, as selected 30 °; The internal diameter of separator tube 3 is 2.5～4 times of pulp-inlet pipe 2 internal diameters, and 1.5～2.5 times of the internal diameter of the internal diameter of separator tube 3 charging aperture of dense disc mill 5 in being, the straight length of separator tube 3 do not comprise feed end 3 ?1 and discharge end 3 ?2 axial length be not less than 3 meters, make greatly to reduce by pressure and the flow pulsation of the paper pulp after separator tube, effectively reduce the pressure of the paper pulp of dense disc mill and the fluctuation of flow in entering; Be 125mm as selected pulp-inlet pipe 2 internal diameters, the internal diameter of separator tube 3 is 400mm, in the internal diameter of charging aperture of dense disc mill 5 be 200mm, the straight length of separator tube 3 does not comprise that the axial length of feed end 3 ?1 and discharge end 3 ?2 is 3 meters.The discharge end 3 of separator tube ?2 directly with in the charging aperture of dense disc mill 5 be connected.
Enter separator tube from pressure and the larger paper pulp of flowed fluctuation of middle underflow pump output through pulp-inlet pipe, because the internal diameter of separator tube 3 is 2.5～4 times of pulp-inlet pipe 2 internal diameters, in separator tube, paper pulp flow velocity declines, and flow and the pressure fluctuation of paper pulp decline greatly; Flow control system makes have all the time paper pulp to overflow in overflow pipe, some paper pulp is gone out by overflow pipe overflow, greatly reduce the frequency that middle underflow pump outlet valve regulates, middle underflow pump is moved under comparatively stable working condition, the pressure that has reduced frequent adjusting middle underflow pump outlet valve and increase and the pulsation of flow, make greatly to reduce by pressure and the flow pulsation of the paper pulp after separator tube, effectively reduced the pressure of paper pulp and the fluctuation of flow of dense disc mill in entering.The skew wall of the extension mouth of described feed end 3 ?1 and the included angle A of separator tube 3 central shafts are that the skew wall of contraction mouth of 15 °～45 ° and discharge end 3 ?2 and the included angle B of separator tube 3 central shafts are 15 °～45 ° and have ensured that paper pulp continous-stable enters and exports separator tube and excessively do not increase the length of feed end 3 ?1 and discharge end 3 ?2.
Overfall on separator tube 33 ?3 be arranged near feed end 3 ?1 front 1/3 ?on the tube wall of 1/2 straight length; As the overfall 3 on separator tube 3 ?3 be arranged on apart from feed end 3 ?on the tube wall of straight length of 1 end face 800mm (for separator tube is apart from feed end 1/3 place), overfall internal diameter is 125mm.
On pulp-inlet pipe 2, be provided with and enter to starch control valve 7 for what regulate middle underflow pump output pulp flow, on described overflow pipe 4, be provided with the overflow control valve 8 for regulating paper pulp spillway discharge;
Flow control system comprises flowmeter, enters to starch control valve 7, overflow control valve 8 and Programmable Logic Controller (PLC); Flowmeter is connected with Programmable Logic Controller; Flowmeter comprises first flow meter 9, the second flowmeter 10 and the 3rd flowmeter 11; Enter to starch control valve 7 and overflow control valve 8 for manual modulation valve or be automatic regulating valve.While entering to starch control valve 7 and overflow control valve 8 for automatic regulating valve, be connected with Programmable Logic Controller respectively; On pulp-inlet pipe 2, be provided with first flow meter 9, be provided with the second flowmeter 10 on overflow pipe 4, be provided with the 3rd flowmeter 11 on grout outlet 6, first flow meter 9, the second flowmeter 10 and the 3rd flowmeter 11 are all connected with Programmable Logic Controller; The flow of paper pulp in pulp-inlet pipe, grout outlet and overflow pipe is set, detects in real time, controlled to adjust to flow control system, the pulp beating power of disc mill and the ratio of the pulp flow by mill district are maintained in the excursion of permission of a setting, making has paper pulp to overflow in overflow pipe all the time, guarantee disc mill is pulled an oar under stable making beating intensity, and obtains stable beating results.The 3rd flowmeter 11 is connected with first flow meter 9, first flow meter 9 with enter to starch control valve 7 and be connected, first flow meter 9 is controlled into the aperture of slurry control valve 7 (according to the Data Control of first flow meter); First flow meter 9 is also connected with the second flowmeter 10, and the second flowmeter 10 is connected with overflow control valve 8, the aperture (according to the Data Control of the second flowmeter) of the second flowmeter 10 controlling water kick control valves 8; The 3rd flowmeter 11 shows the flow of grout outlet 6.
The medium consistency refining feed process of this stable making beating intensity, comprises following technique:
According to the requirement of fibrous raw material characteristic and the paper performance of manufacturing paper with pulp, in setting, the needed making beating intensity level of dense Disc Refiner Beating Process R0(is as got R0=42kWh/t), again according in the rated power W0(of dense disc mill as desirable W0=132kW), calculate, set a paper pulp stream value Q0(based on dense disc mill in the passing through of rated power W0 as desirable=3.14t slurry/hour), make R0=W0/Q0;
The waste and old boxboard paper pulp of the secondary stock U.S. that is 9 ± 1% by concentration by middle underflow pump is transported to separator tube 3 through pulp-inlet pipe 2, in separator tube 3, the flow velocity of paper pulp declines, after the flow pulsation of paper pulp effectively weakens or eliminates, dense disc mill 5 in entering, the slurry that in warp, dense disc mill 5 is processed is exported from grout outlet 6;
In fill process, flow control system detects the pulp flow Qin of middle underflow pump output in real time by the first flow meter 9 on pulp-inlet pipe 2, detect in real time by the pulp flow Qout of disc mill by the 3rd flowmeter 11 on grout outlet, detect in real time by the second flowmeter 10 on overflow pipe the pulp flow Qy overflowing from overflow pipe;
Enter to starch the aperture of control valve 7 and overflow control valve 8 by flow control system control, the pulp flow Qin that makes the output of middle underflow pump in fill process is 110～115% of the pulp flow Q0 that passes through disc mill that sets, thereby makes have all the time paper pulp to overflow in overflow pipe.
Then, the operating power W of dense disc mill and the real-time pulp flow Qout that passes through disc mill detecting in flow control system basis, calculate making beating intensity R=W/Qout in real time, ratio R/the R0 that controls the making beating intensity of pull an oar in real time intensity and setting is 95～105%, in the time of the ratio R/R0<95% of the making beating intensity of real-time making beating intensity and setting, strengthen the aperture of flow spill valve by flow control system, increase by the pulp flow Qy of overflow pipe, thereby reduce by the pulp flow Qout of disc mill; In the time of the ratio R/R0>105% of the making beating intensity of real-time making beating intensity and setting, reduce the aperture of flow spill valve by flow control system, reduce by the pulp flow Qy of overflow pipe, thereby increase by the pulp flow Qout of disc mill; By above adjusting, the ratio R/R0 of the making beating intensity of finally make to pull an oar in real time intensity and setting is 95～105%, reaches the object of stable making beating intensity.
Claims (5)
1. a medium consistency refining feed arrangement for stable making beating intensity, is characterized in that comprising flow control system, pulp-inlet pipe, separator tube and overflow pipe; The feed end of described separator tube is connected with the discharging opening of middle underflow pump by pulp-inlet pipe, discharge end with in the charging aperture of dense disc mill be connected; Described overflow pipe is connected with the overfall on separator tube, the overfall on separator tube be arranged near feed end front 1/3 ?on the tube wall of 1/2 straight length; In described, the discharging opening of dense disc mill is connected with grout outlet;
The feed end of described separator tube is the extension mouth that internal diameter changes from small to big, and the discharge end of separator tube is internal diameter contraction mouth from large to small, and the angle of the skew wall of the extension mouth of feed end and separator tube central shaft is 15 °～45 °; The angle of the skew wall of the contraction mouth of discharge end and separator tube central shaft is 15 °～45 °;
The internal diameter of described separator tube is 2.5～4 times of pulp-inlet pipe internal diameter, and the internal diameter of separator tube be in 1.5～2.5 times of internal diameter of charging aperture of dense disc mill, the straight length axial length of separator tube is not less than 3 meters;
Described flow control system comprises flowmeter, enters to starch control valve, overflow control valve and Programmable Logic Controller; Flowmeter comprises first flow meter, the second flowmeter and the 3rd flowmeter; On described pulp-inlet pipe, be provided with and enter to starch control valve for what regulate middle underflow pump output pulp flow, on described overflow pipe, be provided with the overflow control valve for regulating paper pulp spillway discharge; On described pulp-inlet pipe, be provided with first flow meter, be provided with the second flowmeter on overflow pipe, be provided with the 3rd flowmeter on grout outlet, first flow meter, the second flowmeter and the 3rd flowmeter are all connected with Programmable Logic Controller; The 3rd flowmeter is connected with first flow meter.
2. the medium consistency refining feed arrangement of stable making beating intensity according to claim 1, is characterized in that: the overfall on described separator tube is arranged on the tube wall apart from the straight length at feed end end face 1/3 place.
3. the medium consistency refining feed arrangement of stable making beating intensity according to claim 1, is characterized in that: the internal diameter of described pulp-inlet pipe is 125mm, and the internal diameter of separator tube is 400mm, in the internal diameter of charging aperture of dense disc mill be 200mm.
4. the medium consistency refining feed arrangement of stable making beating intensity according to claim 1, is characterized in that: described enter to starch control valve and overflow control valve is manual modulation valve or is automatic regulating valve; When entering to starch control valve and overflow control valve and being automatic regulating valve, enter to starch control valve and be connected with Programmable Logic Controller respectively with overflow control valve.
5. the medium consistency refining feed arrangement of stable making beating intensity according to claim 1, is characterized in that: described first flow meter with enter to starch control valve and be connected; First flow meter is also connected with the second flowmeter, and the second flowmeter is connected with overflow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049052.3U CN203715986U (en) | 2014-01-24 | 2014-01-24 | Intermediate concentration pulping and feeding device with stable pulping strength |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049052.3U CN203715986U (en) | 2014-01-24 | 2014-01-24 | Intermediate concentration pulping and feeding device with stable pulping strength |
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| CN203715986U true CN203715986U (en) | 2014-07-16 |
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| CN201420049052.3U Withdrawn - After Issue CN203715986U (en) | 2014-01-24 | 2014-01-24 | Intermediate concentration pulping and feeding device with stable pulping strength |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774482A (en) * | 2014-01-24 | 2014-05-07 | 华南理工大学 | Medium-concentration pulping feeding device with stable pulping intensity and feeding method thereof |
| CN106368037A (en) * | 2016-11-28 | 2017-02-01 | 芬欧汇川(中国)有限公司 | Pulping machine and long fiber beating degree control method and system thereof |
| CN113802415A (en) * | 2021-08-19 | 2021-12-17 | 苏州新业造纸有限公司 | Manufacturing process of engine oil filter paper |
-
2014
- 2014-01-24 CN CN201420049052.3U patent/CN203715986U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774482A (en) * | 2014-01-24 | 2014-05-07 | 华南理工大学 | Medium-concentration pulping feeding device with stable pulping intensity and feeding method thereof |
| CN106368037A (en) * | 2016-11-28 | 2017-02-01 | 芬欧汇川(中国)有限公司 | Pulping machine and long fiber beating degree control method and system thereof |
| CN113802415A (en) * | 2021-08-19 | 2021-12-17 | 苏州新业造纸有限公司 | Manufacturing process of engine oil filter paper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20151202 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |