CN203639742U - Sizing agent spreading device for uniform sizing agent spreading of disperse fibers in flow box - Google Patents
Sizing agent spreading device for uniform sizing agent spreading of disperse fibers in flow box Download PDFInfo
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- CN203639742U CN203639742U CN201320842603.7U CN201320842603U CN203639742U CN 203639742 U CN203639742 U CN 203639742U CN 201320842603 U CN201320842603 U CN 201320842603U CN 203639742 U CN203639742 U CN 203639742U
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- sizing agent
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- head box
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Abstract
The utility model discloses a sizing agent spreading device for uniform sizing agent spreading of disperse fibers in a flow box, which comprises a front assembly, a middle assembly and a rear assembly, wherein the front assembly, the middle assembly and the rear assembly are sequentially connected and then form a continuously sizing agent spreading channel, a suddenly-shrunk flow way is disposed in the center of the middle assembly, and a first suddenly-expanded area, a suddenly-shrunk area, a second suddenly-shrunk area and a gradually-shrunk area are disposed in order inside the sizing agent flow way; and the sizing agent spreading method is that sizing agent enters the sizing agent flow way by a sizing agent inlet pipe. The sizing agent is firstly slowed down after passing through the first suddenly-expanded area and then accelerated after entering the suddenly shrunk area. After passing through the suddenly-shrunk flow way, the sizing agent then enters the second suddenly-shrunk area to be slowed down, so that turbulent flows are generated, fiber flocculation is dispersed, the sizing agent with uniformly dispersed fibers is conveyed into the gradually-shrunk area. At last, the sizing agent is conveyed into a turbulent flow generator from a sizing agent outlet. With the utility model, the turbulence flows are generated when the sizing agent is accelerated or slowed down, so that the fibers in the sizing agent can be dispersed more uniformly and paper formation quality of the sizing agent is effectively increased.
Description
Technical field
The utility model relates to pulp and paper technology field, particularly the mortar distributor of the even cloth slurry of a kind of head box loosen collagen fibre use.
Background technology
In pulping and paper-making field, head box is the critical component of paper machine, in paper technology, General Requirements head box is laterally uniformly distributed slurry, effective loosen collagen fibre and prevents that wadding is poly-along paper machine, simultaneously, according to technological requirement, keep stable slurry network speed than relation, for the good shaping of paper web provides necessary prerequisite.General head box is made up of pulp distributor (pulp distributing device with taper pipe or Equi pressure slurry distributor), cloth slurry element, plenum chamber, turbulent flow generator and labial lamina district.Cloth slurry element is generally orifice plate, tube bank or stepped diffuser.
Because existing side direction, Taper Pipe cloth slurry enters slurry, the weak points such as slurry stream wide-angle turns to, and Equi pressure slurry distributor has good cloth slurry effect, in field of papermaking, there are at present many head boxs (particularly extraordinary paper machine slurry flowing box) to adopt Equi pressure slurry distributor, the head box of BH company of Germany exploitation has adopted Equi pressure slurry distributor to enter slurry, its structure as shown in Figure 1, by at the interior sudden contraction runner 6 that arranges of pulp-inlet pipe 5, sudden contraction runner is starched element as cloth, by sudden contraction runner, slurry is accelerated, after deceleration, realize loosen collagen fibre, directly enter in turbulent flow generator 8 through plenum chamber 7 again, obtain reasonable one-tenth paper effect.But, in actual applications, still there is following defect in the head box of this structure: the one, the residing Bu Jiang of sudden contraction runner district is square, the import and export of sudden contraction runner also without any transition runner, easily cause the pulp fiber wadding of each corner poly-, fiber dispersion effect is poor; The 2nd, the height of plenum chamber equals the height of contour of turbulent flow generator, but all there is effective depth in all turbulent flow generators, as shown in Figure 2, in figure, L is the effective depth of this turbulent flow generator, space outside effective depth is otiose for turbulent flow generator cloth slurry, can affect the flowing velocity of slurry if plenum chamber is too high, thereby affect the dispersion of fiber.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and the mortar distributor of the even cloth of a kind of head box loosen collagen fibre slurry use is provided, and the cloth slurry flow passage structure in this mortar distributor rationally, fiber dispersion effect is better in slurry.
The technical solution of the utility model is: the mortar distributor of the even cloth slurry of head box loosen collagen fibre use, be located at head box front portion and be connected with turbulent flow generator, mortar distributor comprises front assembly, middle parts and rear assembly, front assembly, middle parts and rear assembly are connected the continuous cloth slurry runner of rear formation successively, rear assembly is provided with the pulp-inlet pipe being connected with cloth slurry runner, the outer face of front assembly is provided with slurry outlet, and slurry outlet is connected with the import of turbulent flow generator; The center of middle parts is provided with sudden contraction runner, in cloth slurry runner, be provided with the first sudden expansion region, sudden contraction region, the second sudden expansion region and taper region, the first sudden expansion region is positioned at the junction of pulp-inlet pipe and cloth slurry runner, sudden contraction region is positioned at the entrance point of sudden contraction runner, the second sudden expansion region is positioned at the port of export of sudden contraction runner, and taper region is positioned at slurry outlet place.Wherein, the grout outlet of the external Equi pressure slurry distributor of pulp-inlet pipe, pulp-inlet pipe and grout outlet connect one to one, its connecting hose has identical size, can guarantee slurry equipressure, evenly enter.
Between described front assembly and middle parts, be connected by bolt-locking, between middle parts and rear assembly, be connected by bolt-locking, the outer face of front assembly is connected with turbulent flow generator by flange, and cloth slurry runner both sides arrange respectively side seal board.
Described front assembly comprises that symmetrically arranged 2 are led pulpboard, lead the two sides that pulpboard is relative for 2 and be respectively two symmetrical inclined planes, between two inclined planes, form convergent runner, space in convergent runner is taper region, the port of export of convergent runner is slurry outlet, and the entrance point of convergent runner and the port of export of middle parts join; 2 outsides of leading pulpboard arrange respectively anterior limit flange, and the port of export of convergent runner arranges square flange, and the entrance point of convergent runner arranges anterior rectangular flange.
The taper angle of described convergent runner is 30 °～60 °, and two angles of leading between pulpboard are 30 °～60 °.
Large 10mm～the 20mm of effective depth of the aspect ratio turbulent flow generator of described slurry outlet, can prevent owing to going out too large flow rate of slurry and the fiber dispersion of affecting of open height.
Described middle parts comprises two middle part semicircular cylinders opposing and that establish, the exterior arc surface of two middle part semicircular cylinders is fixedly connected with, the middle part of two middle part semicircular cylinders is provided with the through hole as sudden contraction runner, the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner arrival end is sudden contraction region, and the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner exit end is the second sudden expansion region; The both sides up and down of two middle part semicircular cylinders arrange respectively stiffener, limit, stiffener arranged outside middle part flange, and the left and right sides of two middle part semicircular cylinders arranges respectively the rectangular flange in middle part.Wherein, sudden contraction region and the second sudden expansion region are circular-arc space, do not have dead angle, and the pulp fiber wadding that can effectively avoid corner is poly-and affect the phenomenon of fiber dispersion effect.
The height of described sudden contraction runner is 10mm～40mm, and the radius of two middle part semicircular cylinders equates.
Described rear assembly comprises rear portion semicircular cylinder and pulp-inlet pipe, and pulp-inlet pipe tilts to be located on the lateral surface of rear portion semicircular cylinder; The inner space of rear portion semicircular cylinder is the first sudden expansion region; The open side of rear portion semicircular cylinder is provided with the rectangular flange in rear portion, the two ends of rear portion semicircular cylinder be respectively equipped with semicircle flange.
The angle of inclination of described pulp-inlet pipe is 10 °～15 °, and the angle between axis and the horizontal plane of pulp-inlet pipe is 10 °～15 °.
The utility model can be realized the cloth paste-making method of the even cloth slurry of a kind of head box loosen collagen fibre use according to above-mentioned mortar distributor, slurry enters cloth slurry runner by pulp-inlet pipe, first slow down through the first sudden expansion region, then enter sudden contraction region and accelerate, after sudden contraction runner, then enter the second sudden expansion region and slow down, thereby turbulization, loosen collagen fibre wadding is poly-, obtains the homodisperse slurry of fiber and sends into taper region, finally sends into turbulent flow generator by slurry outlet.
When above-mentioned mortar distributor is installed in head box, what mortar distributor was located at head box enters to starch side, and front assembly is connected with turbulent flow generator by square flange, and pulp-inlet pipe is connected with the grout outlet of Equi pressure slurry distributor; Anterior rectangular flange is connected with the rectangular flange in middle part of middle parts one side, the rectangular flange in middle part of middle parts opposite side is connected with the rectangular flange in rear portion, anterior limit flange, limit, middle part flange are connected with side seal board respectively with semicircle flange, after fixing by bolt-locking between each parts, middle part forms the continuous cloth slurry runner of sealing.
When this mortar distributor uses, its principle is: in cloth slurry runner, sudden contraction region and multiple sudden expansions region are set, can make slurry turbulization, loosen collagen fibre in the process of acceleration or deceleration, the equally distributed slurry of fiber enters in the turbulent flow generator of head box by a convergent runner again, thereby guarantees that the slurry entering in head box turbulent flow generator is uniformly distributed; The Cross section Design of cloth slurry runner, for for circular or tapered, has prevented that dead angle and slurry wadding are poly-effectively, and the effective depth that goes out open height and be slightly larger than turbulent flow generator of mortar distributor has simultaneously reduced the actual height of cloth slurry runner, has improved the flow velocity of slurry.
The utility model, with respect to prior art, has following beneficial effect:
1, this mortar distributor is divided into by cloth being starched to runner the first sudden expansion region, sudden contraction region, the second sudden expansion region and the taper region that connect successively, can make slurry turbulization in the process of acceleration or deceleration, thereby make the fiber in slurry obtain disperseing more uniformly, effectively improve the quality of finished paper of slurry.
2, this mortar distributor adopts the form of the composition of front assembly, middle parts and rear assembly, and design by the internal structure to each assembly, making cloth slurry runner is circular transition or convergent runner, in whole cloth slurry runner, there is not dead angle, avoided due to the poly-phenomenon that affects fiber dispersion effect of pulp fiber wadding.
3,, in this mortar distributor, the height design of slurry outlet is than the large 10mm～20mm of the effective depth of turbulent flow generator, by experiment showed, that this is highly comparatively reasonable, and can be owing to going out too large flow rate of slurry and the fiber dispersion of affecting of open height.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing head box.
Fig. 2 is the import schematic cross-section of turbulent flow generator in existing head box.
Fig. 3 is the structural representation of this mortar distributor.
Fig. 4 is that the A of Fig. 3 is to view.
Fig. 5 is the structural representation of this mortar distributor middle front part assembly.
Fig. 6 is the structural representation of middle parts in this mortar distributor.
Fig. 7 is the structural representation of this mortar distributor postmedian assembly.
Fig. 8 is the structural representation of side seal board in this mortar distributor.
Fig. 9 is the import schematic cross-section of the turbulent flow generator that is connected with this mortar distributor in embodiment.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
The mortar distributor of the even cloth slurry of a kind of head box loosen collagen fibre of the present embodiment use, be located at head box front portion and be connected with turbulent flow generator, as shown in Figure 3, mortar distributor comprises front assembly 1, middle parts 2 and rear assembly 3, front assembly, middle parts and rear assembly are connected the continuous cloth slurry runner of rear formation successively, rear assembly is provided with the pulp-inlet pipe 3-4 being connected with cloth slurry runner, and the outer face of front assembly is provided with slurry outlet, and slurry outlet is connected with the import of turbulent flow generator; The center of middle parts is provided with sudden contraction runner 2-4, in cloth slurry runner, be provided with the first sudden expansion region a, sudden contraction region b, the second sudden expansion region c and taper region d, the first sudden expansion region is positioned at the junction of pulp-inlet pipe and cloth slurry runner, sudden contraction region is positioned at the entrance point of sudden contraction runner, the second sudden expansion region is positioned at the port of export of sudden contraction runner, and taper region is positioned at slurry outlet place.Wherein, the grout outlet of the external Equi pressure slurry distributor of pulp-inlet pipe, pulp-inlet pipe and grout outlet connect one to one, can guarantee slurry equipressure, evenly enter.
As shown in Figure 4, between front assembly and middle parts, be connected by bolt-locking, between middle parts and rear assembly, be connected by bolt-locking, the outer face of front assembly is connected with turbulent flow generator by flange, cloth slurry runner both sides arrange respectively side seal board 4, wherein, the structure of side seal board as shown in Figure 8.
As shown in Figure 5, front assembly comprises that symmetrically arranged 2 are led pulpboard 1-4, lead the two sides that pulpboard is relative for 2 and be respectively two symmetrical inclined planes, between two inclined planes, form convergent runner, space in convergent runner is taper region, the port of export of convergent runner is slurry outlet, and the entrance point of convergent runner and the port of export of middle parts join; 2 outsides of leading pulpboard arrange respectively anterior limit flange 1-2, and the port of export of convergent runner arranges square flange 1-1, and the entrance point of convergent runner arranges anterior rectangular flange 1-3.
The taper angle of convergent runner is 30 °～60 °, and two angles of leading between pulpboard are 30 °～60 °.
Large 10mm～the 20mm of effective depth of the aspect ratio turbulent flow generator of slurry outlet, can prevent owing to going out too large flow rate of slurry and the fiber dispersion of affecting of open height.Be that L2 shown in Fig. 5 is the height of slurry outlet, the effective depth of the turbulent flow generator that L1 shown in Fig. 9 adopts for the present embodiment, in the present embodiment, L1 gets 15mm, and L2 gets 35mm.
As shown in Figure 6, middle parts comprises two middle part semicircular cylinder 2-5 opposing and that establish, the exterior arc surface of two middle part semicircular cylinders is fixedly connected with, the middle part of two middle part semicircular cylinders is provided with the through hole as sudden contraction runner 2-4, the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner arrival end is sudden contraction region, and the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner exit end is the second sudden expansion region; The both sides up and down of two middle part semicircular cylinders arrange respectively stiffener 2-3, stiffener arranged outside middle part limit flange 2-2, and the left and right sides of two middle part semicircular cylinders arranges respectively the rectangular flange 2-1 in middle part.Wherein, sudden contraction region and the second sudden expansion region are circular-arc space, do not have dead angle, and the pulp fiber wadding that can effectively avoid corner is poly-and affect the phenomenon of fiber dispersion effect.
The height L3 of sudden contraction runner is 10mm～40mm, and the radius of two middle part semicircular cylinders equates.In the present embodiment, the height L3 of sudden contraction runner gets 10mm.
As shown in Figure 7, rear assembly comprises rear portion semicircular cylinder 3-3 and pulp-inlet pipe 3-4, and pulp-inlet pipe tilts to be located on the lateral surface of rear portion semicircular cylinder; The inner space of rear portion semicircular cylinder is the first sudden expansion region; The open side of rear portion semicircular cylinder is provided with the rectangular flange 3-1 in rear portion, the two ends of rear portion semicircular cylinder be respectively equipped with semicircle flange 3-2.
The angle of inclination of pulp-inlet pipe is 15 °, and the angle between axis and the horizontal plane of pulp-inlet pipe is 15 °.
The present embodiment can be realized the cloth paste-making method of the even cloth slurry of a kind of head box loosen collagen fibre use according to above-mentioned mortar distributor, as shown in the arrow in Fig. 1, slurry enters cloth slurry runner by pulp-inlet pipe, first slow down through the first sudden expansion region a, then entering sudden contraction region b accelerates, after sudden contraction runner, entering the second sudden expansion region c slows down again, thereby turbulization, loosen collagen fibre wadding is poly-, obtain the homodisperse slurry of fiber and send into taper region d, finally sending into turbulent flow generator by slurry outlet.
When above-mentioned mortar distributor is installed in head box, what mortar distributor was located at head box enters to starch side, and front assembly is connected with turbulent flow generator by square flange, and pulp-inlet pipe is connected with the grout outlet of Equi pressure slurry distributor; Anterior rectangular flange is connected with the rectangular flange in middle part of middle parts one side, the rectangular flange in middle part of middle parts opposite side is connected with the rectangular flange in rear portion, anterior limit flange, limit, middle part flange are connected with side seal board respectively with semicircle flange, after fixing by bolt-locking between each parts, the inner continuous cloth slurry runner of sealing that forms.
When this mortar distributor uses, its principle is: in cloth slurry runner, sudden contraction region and multiple sudden expansions region are set, can make slurry turbulization, loosen collagen fibre in the process of acceleration or deceleration, the equally distributed slurry of fiber enters in the turbulent flow generator of head box by a convergent runner again, thereby guarantees that the slurry entering in head box turbulent flow generator is uniformly distributed; The Cross section Design of cloth slurry runner, for for circular or tapered, has prevented that dead angle and slurry wadding are poly-effectively, and the effective depth that goes out open height and be slightly larger than turbulent flow generator of mortar distributor has simultaneously reduced the actual height of cloth slurry runner, has improved the flow velocity of slurry.
As mentioned above, just can realize preferably the utility model, above-described embodiment is only preferred embodiment of the present utility model, is not used for limiting practical range of the present utility model; Be that all equalizations of doing according to the utility model content change and modify, all by the utility model claim scope required for protection is contained.
Claims (9)
1. the mortar distributor of the even cloth slurry of head box loosen collagen fibre use, it is characterized in that, mortar distributor is located at head box front portion and is connected with turbulent flow generator, mortar distributor comprises front assembly, middle parts and rear assembly, front assembly, middle parts and rear assembly are connected the continuous cloth slurry runner of rear formation successively, rear assembly is provided with the pulp-inlet pipe being connected with cloth slurry runner, and the outer face of front assembly is provided with slurry outlet, and slurry outlet is connected with the import of turbulent flow generator; The center of middle parts is provided with sudden contraction runner, in cloth slurry runner, be provided with the first sudden expansion region, sudden contraction region, the second sudden expansion region and taper region, the first sudden expansion region is positioned at the junction of pulp-inlet pipe and cloth slurry runner, sudden contraction region is positioned at the entrance point of sudden contraction runner, the second sudden expansion region is positioned at the port of export of sudden contraction runner, and taper region is positioned at slurry outlet place.
2. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 1, it is characterized in that, between described front assembly and middle parts, be connected by bolt-locking, between middle parts and rear assembly, be connected by bolt-locking, the outer face of front assembly is connected with turbulent flow generator by flange, and cloth slurry runner both sides arrange respectively side seal board.
3. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 1, it is characterized in that, described front assembly comprises that symmetrically arranged 2 are led pulpboard, lead the two sides that pulpboard is relative for 2 and be respectively two symmetrical inclined planes, between two inclined planes, form convergent runner, space in convergent runner is taper region, and the port of export of convergent runner is slurry outlet, and the entrance point of convergent runner and the port of export of middle parts join; 2 outsides of leading pulpboard arrange respectively anterior limit flange, and the port of export of convergent runner arranges square flange, and the entrance point of convergent runner arranges anterior rectangular flange.
4. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 3, it is characterized in that, the taper angle of described convergent runner is 30 °～60 °.
5. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 1, it is characterized in that the large 10mm～20mm of effective depth of the aspect ratio turbulent flow generator of described slurry outlet.
6. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 1, it is characterized in that, described middle parts comprises two middle part semicircular cylinders opposing and that establish, the exterior arc surface of two middle part semicircular cylinders is fixedly connected with, the middle part of two middle part semicircular cylinders is provided with the through hole as sudden contraction runner, the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner arrival end is sudden contraction region, and the inner space that is positioned at the middle part semicircular cylinder of sudden contraction runner exit end is the second sudden expansion region; The both sides up and down of two middle part semicircular cylinders arrange respectively stiffener, limit, stiffener arranged outside middle part flange, and the left and right sides of two middle part semicircular cylinders arranges respectively the rectangular flange in middle part.
7. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 6, it is characterized in that, the height of described sudden contraction runner is 10mm～40mm, and the radius of two middle part semicircular cylinders equates.
8. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 1, it is characterized in that, described rear assembly comprises rear portion semicircular cylinder and pulp-inlet pipe, and pulp-inlet pipe tilts to be located on the lateral surface of rear portion semicircular cylinder; The inner space of rear portion semicircular cylinder is the first sudden expansion region; The inner space of rear portion semicircular cylinder is the first sudden expansion region; The open side of rear portion semicircular cylinder is provided with the rectangular flange in rear portion, the two ends of rear portion semicircular cylinder be respectively equipped with semicircle flange.
9. the even cloth of head box loosen collagen fibre is starched the mortar distributor of use according to claim 8, it is characterized in that, the angle of inclination of described pulp-inlet pipe is 10 °～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842603.7U CN203639742U (en) | 2013-12-19 | 2013-12-19 | Sizing agent spreading device for uniform sizing agent spreading of disperse fibers in flow box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842603.7U CN203639742U (en) | 2013-12-19 | 2013-12-19 | Sizing agent spreading device for uniform sizing agent spreading of disperse fibers in flow box |
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| Publication Number | Publication Date |
|---|---|
| CN203639742U true CN203639742U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320842603.7U Withdrawn - After Issue CN203639742U (en) | 2013-12-19 | 2013-12-19 | Sizing agent spreading device for uniform sizing agent spreading of disperse fibers in flow box |
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| Country | Link |
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| CN (1) | CN203639742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696313A (en) * | 2013-12-19 | 2014-04-02 | 华南理工大学 | Pulp distribution device and method for disperse fiber even pulp distribution of flow box |
-
2013
- 2013-12-19 CN CN201320842603.7U patent/CN203639742U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696313A (en) * | 2013-12-19 | 2014-04-02 | 华南理工大学 | Pulp distribution device and method for disperse fiber even pulp distribution of flow box |
| CN103696313B (en) * | 2013-12-19 | 2015-10-28 | 华南理工大学 | The mortar distributor of the even cloth slurry of head box loosen collagen fibre and method |
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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: 20140611 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |