CN101476258A - Constant-quantity constant-pressure pulping method and apparatus for disk milling machine - Google Patents
Constant-quantity constant-pressure pulping method and apparatus for disk milling machine Download PDFInfo
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- CN101476258A CN101476258A CNA2009100367217A CN200910036721A CN101476258A CN 101476258 A CN101476258 A CN 101476258A CN A2009100367217 A CNA2009100367217 A CN A2009100367217A CN 200910036721 A CN200910036721 A CN 200910036721A CN 101476258 A CN101476258 A CN 101476258A
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Abstract
The invention provides a disc mill constant pressure beating method and equipment thereof. The method comprises: in the beating process, keeping the centrifugal slurry pump to supply slurry in constant amount and constant pressure by a current stabilizing and pressure stabilizing device; while setting the beating pressure by the pressure-regulating valve in the disc mill hydraulic system according to the different slurry kind. The equipment comprises a vertical slurry pool, a slurry supplying pump, a current stabilizing and pressure stabilizing device and a disc mill; the slurry supplying pump is a ACP type centrifugal slurry pump or MCP type middle concentration slurry pump; the current stabilizing and pressure stabilizing device is a overflow type current stabilizing and pressure stabilizing device or an air cushion type current stabilizing and pressure stabilizing device; the slurry supplying pump is connected with the current stabilizing and pressure stabilizing device through a slurry supplying pipe; the overflow type current stabilizing and pressure stabilizing device has a return conduit connected with the vertical slurry pool; and the current stabilizing and pressure stabilizing device is connected with the disc mill inlet through the slurry supplying pipe. The invention can realize the constant amount constant pressure beating of disc mill and the unification of the quality and quantity of the beating method, and achieves the advantages of constant beating power, high efficiency, energy saving and stable beating quantity and quality.
Description
Technical field
The present invention relates to disc mill making beating technology, particularly a kind of disc mill constant level pressure methods of beating and device thereof.
Background technology
In papermaking process, making beating is a crucial link, have the title of " making beating in seven fens, three minutes copy paper ".Distinguish by beating consistency: existing disc mill making beating technology has low consistency pulping, middle and high consistency pulping; Distinguish by the making beating mode: existing disc mill making beating technology has constant voltage making beating and spacing making beating.Low consistency pulping mainly relies on cut-out and the friction making beating of abrasive disc to fiber, and based on cut staple, wire-dividing broom purification is auxilliary, is suitable for the making beating of the former wood pulp of long fiber; Middle and high consistency pulping mainly relies on fiber and fiber internal friction to make the fiber wire-dividing broom purification, cuts off and lacks, and is suitable for staple fibre grass plasmoid, the making beating of secondary stock secondary stock.The making beating final purpose of quovis modo is for the good fibre morphology that obtains, and the stream of the back paper pulp that is beneficial to pull an oar send the formation with page.Existing low consistency pulping mode is the determining deviation making beating, relies on to regulate intensity and the quality that the making beating effect is regulated in the gap between the abrasive disc; And existing middle and high consistency pulping mode is the constant voltage making beating, and in pulping process, mill district pressure keeps constant according to setting value, and making beating intensity is controlled by the size of mill district pressure.Two kinds of methods of beatings do not consider that all centrifugal stock pump is for starching the influence of flow and pressure variation to the disc mill refining pulp quality, in publication " disc mill is exempted from power for slurry medium consistency refining method and device ", also exist and carry out with making beating, slurry tower (pond) slurry position descends and influences disc mill inlet flow rate and pressure, and under the disc mill swabbing action, by with the pulp-water current difference, underflow material concentration increases gradually in the slurry tower (pond), cause the refining concentration inequality, descend with slurry tower (pond) slurry position, disc mill advances to starch pressure and descends, cause actual beating pressure shakiness, influence refining pulp quality.Therefore, control panel grinding machine grout absorption is stable, pressure stability, and disc mill mill district pressure stability realizes three stable unifications, with energy savings crucial meaning is arranged to guaranteeing the stable of disc mill refining pulp quality.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming of the existence of existing making beating technology, provide a kind of be applicable to disc mill constant level pressure methods of beating that basic, normal, high dense disc mill refining pulp quality is stable and.Another object of the present invention is to provide a kind of disc mill constant level pressure beating apparatus of realizing said method.
Technical purpose of the present invention is achieved through the following technical solutions: a kind of disc mill constant level pressure methods of beating, utilize the constant constant voltage effect of constant current constant voltage device to keep slurry supply pump according to setting flow and force value slurry to be fed to the mill district of disc mill, described slurry supply pump is centrifugal stock pump of ACP type or MCP type middle underflow pump.
Said method keeps centrifugal stock pump to supply slurry according to setting value constant constant voltage by the constant current constant voltage device in pulping process, plants according to different slurries simultaneously, sets beating pressure by the pressure of adjustment disk grinding machine hydraulic system pressure regulator valve and realizes.
In the above-mentioned disc mill constant level pressure methods of beating, the stock volume of slurry supply pump is greater than the desired defibrination amount of disc mill.
In the above-mentioned disc mill constant level pressure methods of beating, described constant current constant voltage device comprises overflow-type constant current constant voltage device and air-cushion type constant current constant voltage device, the excessive pulp flow port of overflow-type constant current constant voltage device has return duct to be connected with vertical stock tank top, and air-cushion type constant current constant voltage device does not then have return duct and is connected with vertical stock tank.
A kind of disc mill constant level pressure beating apparatus, comprise vertical stock tank, slurry supply pump, constant current constant voltage device and hydraulic pressure disc mill, described vertical stock tank grout outlet is connected with the slurry supply pump import, the slurry supply pump outlet is connected with the import of constant current constant voltage device by flow inlet, and the outlet of constant current constant voltage device is connected with the disc mill import by flow inlet.
In the above-mentioned disc mill constant level pressure beating apparatus, vertical stock tank is circular or square; The stock tank bottom becomes the gradient of 10 degree with ground, become the gradient of 40 degree with the stock tank wall, and agitator axle center line becomes 30 degree angles with vertical stock tank grout outlet.
In the above-mentioned disc mill constant level pressure beating apparatus, the impeller of the centrifugal stock pump of described ACP type is a semi-open type, and front shroud of impeller is fixed on the pump case, the adjustable gaps of this half-opened impeller and its front shroud; The projection shape line of the impeller inlet direction of described MCP type middle underflow pump is a log spiral, and its impeller channel is the single channel of open type.
In the above-mentioned disc mill constant level pressure beating apparatus, the slurry position in the described overflow-type constant current constant voltage device is higher than the disc mill entrance location, sets into its installation site height of slurry force value different adjustment according to disc mill; Described air-cushion type constant current constant voltage device is set into slurry force value different adjustment air cushion pressure according to disc mill.
In the above-mentioned disc mill constant level pressure beating apparatus, described hydraulic pressure disc mill comprises hydraulic pressure single disc refiner and Hydraulic Double mill, and the advance and retreat cutter stroke of hydraulic pressure single disc refiner and Hydraulic Double mill is by HYDRAULIC CONTROL SYSTEM, and beating pressure is regulated by the pressure regulator valve of hydraulic control system.
The present invention has following advantage and effect with respect to prior art: the present invention can realize the constant level pressure making beating of disc mill, with respect to the low dense determining deviation making beating of dense constant voltage making beating or double plate mill in the dope platen grinding machine in existing, has the making beating power invariability, energy-efficient, making beating amount and matter are stable, have realized the unification of the quality and quantity of methods of beating.Adopt this disc mill constant level pressure methods of beating and device can realize pulping process flow and pressure stability, disc mill power (energy consumption) is constant, saves energy consumption, and refining pulp quality is stable.Adopt this disc mill constant level pressure methods of beating and device to avoid existing low dense determining deviation making beating narrow with middle and high dense constant voltage making beating adaptability, the making beating mass flow discrepancy, cause actual beating pressure shakiness for the variation of slurry pressure, the shortcoming of refining pulp quality inequality, adaptability with broad, can be applicable to the basic, normal, high making beating that waits variable concentrations of concentration 3%～10%, by setting different making beating flow and pressure, changing different abrasive discs all has the steady quality effect of uniform to the making beating of various fibers.
Description of drawings
Fig. 1 is the structural representation of this disc mill of disc mill overflow-type constant level pressure beating apparatus
Fig. 2 is the structural representation of this disc mill of disc mill air-cushion type constant level pressure beating apparatus
Fig. 3 is the structural front view of the vertical stock tank of this disc mill of disc mill constant level pressure beating apparatus
Fig. 4 is the structure vertical view of the vertical stock tank of this disc mill of disc mill constant level pressure beating apparatus
Fig. 5 is the structural front view of this disc mill of disc mill constant level pressure beating apparatus (overflow-type) constant current constant voltage device
Fig. 6 is the structure vertical view of this disc mill of disc mill constant level pressure beating apparatus (overflow-type) constant current constant voltage device
Fig. 7 is the structural front view of this disc mill of disc mill constant level pressure beating apparatus (air-cushion type) constant current constant voltage device
Fig. 8 is the structure vertical view of this disc mill of disc mill constant level pressure beating apparatus (air-cushion type) constant current constant voltage device
Fig. 9 is the structural representation of the centrifugal stock pump of this disc mill of disc mill constant level pressure beating apparatus ACP type
Figure 10 is the structural representation of this disc mill of disc mill constant level pressure beating apparatus MCP type middle underflow pump.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further described in detail, but embodiments of the present invention are not limited only to this.
Fig. 1 and Fig. 2 show the specific embodiment of the present invention, by shown in Figure 1, this disc mill (overflow-type) constant level pressure beating apparatus is formed by connecting by flow inlet 105 successively by vertical stock tank 101, the centrifugal stock pump 102 of ACP type, overflow-type constant current constant voltage device 103, Hydraulic Double disc mill 104, and overflow-type constant current constant voltage device 103 has return duct 106 to be connected with vertical stock tank 101; Shown in Figure 2 disc mill (air-cushion type) constant level pressure beating apparatus is formed by connecting by flow inlet 205 successively by vertical stock tank 201, MCP type middle underflow pump 202, air-cushion type constant current constant voltage device 203 (which is provided with Pressure gauge 2031 and barrier film 2032), Hydraulic Double disc mill 204.
Vertical stock tank front view is provided with agitator 301 as shown in Figure 3 in it, the stock tank body design is circular, its bottom design gradient β equals 10 degree, and α equals 40 degree, and gradient height H equals half of diameter D, be beneficial to screw propeller and stir, promote the even and mobile of slurry; The grout outlet of attached view 4 stock tanks of vertical stock tank is positioned at stock tank bottom and equals 30 degree with the angle γ of the axial line of agitator 301.
Overflow-type constant current constant voltage device front view 5 and vertical view 6 and air-cushion type constant current constant voltage device front view 7 and overlook stock inlet shown in Figure 8 and be tangential direction and advance slurry.
The centrifugal stock pump Fig. 9 of ACP type by the pump housing 901, impeller before liner plate 902, half-opened impeller 903, pump postoperculum 904, sealing 905, bearing body suspension 906 and axle 907 form, front shroud of impeller 902 is fixed on the pump case 901, the adjustable gaps of half-opened impeller 903 and its front shroud 902, so that adjust after impeller 903 or front shroud 902 wearing and tearing crack between the two, guarantee the performance of stock pump.
MCP type middle underflow pump Figure 10 is made up of suction cover 1001, the pump housing 1002, logarithm helical runner 1003, pump postoperculum 1004, sealing 1005, bearing body suspension 1006 and pump shaft 1007, the side projection camber line of suction cover 1001 and the side projection camber line of logarithm helical runner 1003 match, the axis projection shape line of logarithm helical runner 1003 is a log spiral, its impeller channel is the single channel of open type, have and do not have the property of obstruction and intake performance, the efficient conveying of underflow material in the assurance preferably.
202 imports of MCP type middle underflow pump are connected with the grout outlet of vertical stock tank 201, its outlet is connected with air-cushion type constant current constant voltage device 203 by flow inlet 205, by regulating the pressure of square air cushion on air-cushion type constant current constant voltage device 203 barrier films, thereby flow and pressure stability that control enters Hydraulic Double disc mill 204, the beating degree requirement of planting equally according to the difference slurry, adjust the pressure regulator valve setting value of Hydraulic Double disc mill 204, determine beating pressure, thereby realize (air-cushion type) of the present invention constant current amount level pressure making beating mode.
During the work of this disc mill constant level pressure beating apparatus, can keep flow and pressure stability for slurry, the flow and the pressure stability of disc mill making beating, because having, stirs preferably and flowability in whole pulping process slurry, thereby the concentration of slurry is also relatively stable, therefore, and whole pulping process power invariability, energy-efficient, as to keep the making beating quality and quantity stable unification.
Claims (8)
1, a kind of disc mill constant level pressure methods of beating, it is characterized in that: in pulping process, utilize the constant constant voltage effect of constant current constant voltage device to keep slurry supply pump according to setting flow and force value slurry to be fed to the mill district of disc mill, described slurry supply pump is centrifugal stock pump of ACP type or MCP type middle underflow pump.
2, require described disc mill constant level pressure methods of beating according to right 1, it is characterized in that: the stock volume of slurry supply pump is greater than the desired defibrination amount of disc mill.
3, require described disc mill constant level pressure methods of beating according to right 2, it is characterized in that: described constant current constant voltage device comprises overflow-type constant current constant voltage device and air-cushion type constant current constant voltage device, overflow-type constant current constant voltage device has the return duct outlet to be connected with the top of vertical stock tank, and air-cushion type constant current constant voltage device does not then have return duct and is connected with vertical stock tank.
4, a kind of disc mill constant level pressure beating apparatus, comprise vertical stock tank, slurry supply pump, constant current constant voltage device and hydraulic pressure disc mill, it is characterized in that: vertical stock tank grout outlet is connected with the slurry supply pump import, the slurry supply pump outlet is connected with constant current constant voltage device tangential entry by flow inlet, and the outlet of constant current constant voltage device is connected with the disc mill import by flow inlet.
5, according to right 4 described disc mill constant level pressure beating apparatus, it is characterized in that: vertical stock tank is for circular or square; The stock tank bottom becomes the gradient of 10 degree with ground, become the gradient of 40 degree with the stock tank wall, and agitator axle center line becomes 30 degree angles with vertical stock tank grout outlet.
6, according to right 4 described disc mill constant level pressure beating apparatus, it is characterized in that: the impeller of the centrifugal stock pump of described ACP type is a semi-open type, and front shroud of impeller is fixed on the pump case, the adjustable gaps of this half-opened impeller and its front shroud; The projection shape line of the impeller inlet direction of described MCP type middle underflow pump is a log spiral, and its impeller channel is the single channel of open type.
7, according to right 4 described disc mill constant level pressure beating apparatus, it is characterized in that: the slurry position in the described overflow-type constant current constant voltage device is higher than the disc mill entrance location, sets into its installation site height of slurry force value different adjustment according to disc mill; Described air-cushion type constant current constant voltage device is set into slurry force value different adjustment air cushion pressure according to disc mill.
8, according to right 4～7 each described disc mill constant level pressure beating apparatus, it is characterized in that: described hydraulic pressure disc mill comprises hydraulic pressure single disc refiner and Hydraulic Double mill, the advance and retreat cutter stroke of hydraulic pressure single disc refiner and Hydraulic Double mill is by HYDRAULIC CONTROL SYSTEM, and beating pressure is regulated by the pressure regulator valve of hydraulic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100367217A CN101476258A (en) | 2009-01-16 | 2009-01-16 | Constant-quantity constant-pressure pulping method and apparatus for disk milling machine |
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| CNA2009100367217A CN101476258A (en) | 2009-01-16 | 2009-01-16 | Constant-quantity constant-pressure pulping method and apparatus for disk milling machine |
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| CNA2009100367217A Pending CN101476258A (en) | 2009-01-16 | 2009-01-16 | Constant-quantity constant-pressure pulping method and apparatus for disk milling machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974860A (en) * | 2010-10-26 | 2011-02-16 | 华南理工大学 | Method and device for medium-consistency refining and pumping |
| CN102400406A (en) * | 2011-11-09 | 2012-04-04 | 华南理工大学 | Medium concentration hydraulic double disc stuff grinder |
| CN103790059A (en) * | 2014-01-24 | 2014-05-14 | 华南理工大学 | Device and method for medium-concentration beating fed through medium-concentration pulp pump |
| CN115679738A (en) * | 2022-11-04 | 2023-02-03 | 华南理工大学 | Accurate pulping machine and pulping method thereof |
-
2009
- 2009-01-16 CN CNA2009100367217A patent/CN101476258A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974860A (en) * | 2010-10-26 | 2011-02-16 | 华南理工大学 | Method and device for medium-consistency refining and pumping |
| CN102400406A (en) * | 2011-11-09 | 2012-04-04 | 华南理工大学 | Medium concentration hydraulic double disc stuff grinder |
| CN102400406B (en) * | 2011-11-09 | 2014-02-26 | 华南理工大学 | Medium concentration hydraulic double disc stuff grinder |
| CN103790059A (en) * | 2014-01-24 | 2014-05-14 | 华南理工大学 | Device and method for medium-concentration beating fed through medium-concentration pulp pump |
| CN115679738A (en) * | 2022-11-04 | 2023-02-03 | 华南理工大学 | Accurate pulping machine and pulping method thereof |
| CN115679738B (en) * | 2022-11-04 | 2024-04-19 | 华南理工大学 | Accurate pulping machine and pulping method thereof |
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Open date: 20090708 |