CN205024522U - Positive pressure flow box - Google Patents
Positive pressure flow box Download PDFInfo
- Publication number
- CN205024522U CN205024522U CN201520738614.XU CN201520738614U CN205024522U CN 205024522 U CN205024522 U CN 205024522U CN 201520738614 U CN201520738614 U CN 201520738614U CN 205024522 U CN205024522 U CN 205024522U
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- Prior art keywords
- box
- chamber
- casing
- inflatable chamber
- positive pressure
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Abstract
The utility model discloses a positive pressure flow box, the power distribution box comprises a box body, the lower part of box one side sets up thick liquid mouthful, and its lower part opposite side sets up the grout outlet, grout outlet installation cloth thick liquid ware, box internally mounted homogenate roller, homogenate roller be by the motor drive in the box outside, the flexible diaphragm of box upper portion installation, flexible diaphragm is peripheral sealed fixed with the box inner wall, flexible diaphragm respectively and between the box roof, with the box in the pulp liquor plane between form and aerify chamber and airtight chamber, airtight chamber is located the below of aerifing the chamber, the box lateral wall of aerifing the chamber is opened has the air inlet, the air inlet passes through gas transmission pipeline and surge tank intercommunication, the supply gas externally mounted air -blower of mouth, the mouth of supplying gas of surge tank setting. The utility model discloses it is low to have the power consumption, and the interior pressure stability of box is favorable to obtaining the more stable torrent and the body paper quality of production.
Description
Technical field
The utility model relates to paper making equipment technical field, specifically a kind of positive pressure flow box.
Background technology
Utilize paper pulp to prepare in the process of body paper to need paper pulp to be coated on screen cloth uniformly current, and then dry the body paper being formed and there is certain wide cut.In the process of even pasting, use a kind of head box, effect provides full width to screen cloth and starches stream uniformly, requires that head box meets the isobaric constant speed of full width on the one hand, make slurry stream be in turbulence state on the other hand.In prior art, the outflow of the slurry in common head box relies on the effect of paper pulp gravity to realize, and the structure of this device is simple, and shortcoming is that the volume of casing is large, and slurry stream Turbulent Scales is large, slurry homogenate weak effect.
Chinese patent (application number 201120349149.2, authorized announcement date on June 13rd, 2012) discloses " a kind of positive pressure flow box ", is the improvement to existing head box.It comprises casing, the side of casing is stock inlet, the opposite side of casing is grout outlet, and at grout outlet place, pulp distributor is installed, box house is provided with homogenate roller, and homogenate roller is driven by the motor outside casing, the open-mouth of described casing installs a top cover, box house forms an airtight cavity, and also comprise a blower fan, the cavity of described blower and pipeline and box house is through.This utility model carries out air blast pressurization by increase top cover and a blast apparatus to casing, in casing, form malleation, and then can improve the current-sharing effect of slurries.But in actual use find air blast need always running, to the cavity of box house air-supply maintain pressurization, comparatively power consumption, safeguard and use cost higher; In addition, the cavity pressure of box house is relevant with the rotating speed of air blast, is inconvenient to control, and can not keep more stable pressure limit, low during height during pressure, and the speed that paper pulp flows out is unstable and then affect the body paper thickness produced.
Utility model content
The utility model provides a kind of positive pressure flow box that cavity pressure can be kept stable, needing continuous firing, causing the problem that power consumption is higher and cavity pressure is unstable for solving blower fan in prior art.
In order to realize the purpose of this utility model, by the following technical solutions:
A kind of positive pressure flow box, comprise casing, the side, bottom of described casing arranges stock inlet, its underpart opposite side arranges grout outlet, described grout outlet installs pulp distributor, described box house installs homogenate roller, homogenate roller is driven by the motor outside casing, flexible partition is installed on described casing top, flexible partition periphery and cabinet wall seal fixing, flexible partition is respectively and between roof box, and form inflatable chamber and closed chamber between the pulp liquor plane in casing, closed chamber is positioned at the below of inflatable chamber, the wall box of inflatable chamber has air inlet, air inlet is communicated with vacuum tank by gas pipeline, vacuum tank arranges air taking port, air blast is installed in the outside of air taking port.
In order to realize the purpose of this utility model further, can also by the following technical solutions:
The volume of described closed chamber is volume 2-5 times of inflatable chamber.The volume of described vacuum tank is more than 10 times of inflatable chamber volume.The dowel being provided with intersection is interrupted in described flexible partition bottom surface.Described air blast is Frequency Converter Control, setting pressure table and pressure sensor on described vacuum tank, and the signal output part of pressure sensor is connected with the start stop signal input of frequency converter.
The beneficial effects of the utility model:
1, the top of the utility model in casing is provided with flexible partition, by flexible partition, pulp liquor plane and roof box are divided into closed chamber and inflatable chamber, pulp liquor and inflatable chamber are arranged to seal isolation structure, the air-supply gas of air blast can be avoided to be dissolved in pulp liquor, to affect temperature and the turbulent flow of pulp liquor; In addition, inflatable chamber has higher pressure, closed chamber gas volume is compressed downwards by extruding flexible partition, when closed chamber is identical with inflatable chamber pressure, flexible partition keeps stable, can be balanced by Automatic-searching by the pressure being arranged so that inflatable chamber and closed chamber of flexible partition, and the pressure remained steady state of closed chamber can be kept.So namely can be controlled the pressure in closed chamber by the pressure controlling inflatable chamber, thus the stable pulp liquor rate of outflow can be kept.
2 vacuum tanks be communicated with inflatable chamber, its volume is more than 10 times of inflatable chamber volume, when inflatable chamber Volume Changes, because small volume, limited to the pressure influence of vacuum tank and inflatable chamber, and then can or slightly disregard, so, the pressure stability of closed chamber can be obtained when inflatable chamber pressure remained steady, make the Stress control of closed chamber very convenient.
3, the setting of vacuum tank and inflatable chamber and flexible partition, make air blast can keep running always, save electric energy, reduce operation and maintenance cost, namely after air blast reaches the malleation of setting to vacuum tank air-supply, just can quit work, when pressure reduces, then open air blast tonifying Qi supercharging.In order to save electric energy further, air blast can also be set to Frequency Converter Control, realize automatic start-stop by the pressure transmitter on vacuum tank, to improve the automation performance of equipment, handled easily uses.
Accompanying drawing explanation
Fig. 1 is layout schematic diagram of the present utility model.
Fig. 2 is A direction view in Fig. 1, i.e. the structural representation of described flexible partition bottom surface.
Reference numeral: 1-casing, 11-stock inlet, 12-grout outlet, 13-air inlet, 3-homogenate roller, 4-flexible partition, 41-dowel, 5-inflatable chamber, 6-closed chamber, 7-vacuum tank, 71-air taking port, 8-gas pipeline, 9-air blast.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-2, a kind of positive pressure flow box of the present embodiment, comprise casing 1, the side, bottom of described casing 1 arranges stock inlet 11, its underpart opposite side arranges grout outlet 12, described grout outlet 12 installs pulp distributor, homogenate roller 3 is installed in described casing 1 inside, homogenate roller 3 is driven by the motor outside casing 1, flexible partition 4 is installed on described casing 1 top, flexible partition 4 periphery and casing 1 inner wall sealing are fixed, flexible partition 4 is respectively and between casing 1 top board, and form inflatable chamber 5 and closed chamber 6 between the pulp liquor plane in casing 1, closed chamber 6 is positioned at the below of inflatable chamber 5, casing 1 sidewall of inflatable chamber 5 has air inlet 13, air inlet 13 is communicated with vacuum tank 7 by gas pipeline 8, vacuum tank 7 arranges air taking port 71, air blast 9 is installed in the outside of air taking port 71.
Specifically, a kind of positive pressure flow box disclosed in the present embodiment, passes through the transformation in casing 1 on the basis of existing technology, and increases flexible partition 4, makes casing 1 top form inflatable chamber 5 and closed chamber 6.Inflatable chamber 5 has higher pressure, by extruding flexible partition 4 compression closed chamber 6 gas volume downwards, when closed chamber 6 is identical with inflatable chamber 5 pressure, flexible partition 4 keeps stable, can be balanced by Automatic-searching by the pressure being arranged so that inflatable chamber 5 and closed chamber 6 of flexible partition 4, and the pressure remained steady state of closed chamber 6 can be kept.So namely can be controlled the pressure in closed chamber 6 by the pressure controlling inflatable chamber 5, thus the stable pulp liquor rate of outflow can be kept.The setting of vacuum tank 7 and inflatable chamber 5 and flexible partition 4, make air blast 9 can keep running always, save electric energy, reduce operation and maintenance cost, namely after air blast 9 reaches the malleation of setting to vacuum tank 7 air-supply, both can quit work, when pressure reduces, then open air blast 9 tonifying Qi supercharging.During use, pulp liquor continues to send into by casing 1 stock inlet 11, homogenate roller 3 can keep pulp liquor to keep turbulence state, paper pulp is coated in screen cloth from grout outlet 12 through pulp distributor by pulp liquor uniformly, closed chamber 6 keeps stable pressure, can obtain better homogenate effect, ensure produce body paper thickness evenly.
Further, as shown in Figure 1, the conveniently stretching, extension of flexible partition 4, makes closed chamber 6 obtain better steady pressure, and the volume of closed chamber 6 described in the present embodiment is the volume 2.5 times of inflatable chamber 5.The volume of described vacuum tank 7 is 15 times of inflatable chamber 5 volume.The vacuum tank 7 be communicated with inflatable chamber 5, its volume is more than 10 times of inflatable chamber 5 volume, when inflatable chamber 5 Volume Changes, because small volume, limited to the pressure influence of vacuum tank 7 and inflatable chamber 5, and then can or slightly disregard, so, the pressure stability of closed chamber 6 can be obtained when inflatable chamber 5 pressure remained steady, make the Stress control of closed chamber 6 very convenient.
As shown in Figure 2, the present embodiment is interrupted the dowel 41 being provided with intersection in described flexible partition 4 bottom surface.Intensity and the service life of flexible partition 4 can be improved by arranging dowel 41.
Further, in order to save electric energy further, air blast 9 can also be set to Frequency Converter Control, realize automatic start-stop by the pressure transmitter on vacuum tank 7, to improve the automation performance of equipment, handled easily uses.The present embodiment is set to Frequency Converter Control mode at described air blast 9, and setting pressure table and pressure sensor on vacuum tank 7, the signal output part of pressure sensor is connected with the start stop signal input of frequency converter.Pressure gauge conveniently can observe the pressure in vacuum tank 7, conveniently carries out pressure adjustment.
The technology contents of the not detailed description of the utility model is known technology.
Claims (5)
1. a positive pressure flow box, comprise casing, the side, bottom of described casing arranges stock inlet, its underpart opposite side arranges grout outlet, described grout outlet installs pulp distributor, described box house installs homogenate roller, homogenate roller is driven by the motor outside casing, it is characterized in that, flexible partition is installed on described casing top, flexible partition periphery and cabinet wall seal fixing, flexible partition is respectively and between roof box, and form inflatable chamber and closed chamber between the pulp liquor plane in casing, closed chamber is positioned at the below of inflatable chamber, the wall box of inflatable chamber has air inlet, air inlet is communicated with vacuum tank by gas pipeline, vacuum tank arranges air taking port, air blast is installed in the outside of air taking port.
2. a kind of positive pressure flow box according to claim 1, is characterized in that, the volume of described closed chamber is volume 2-5 times of inflatable chamber.
3. a kind of positive pressure flow box according to claim 1, is characterized in that, the volume of described vacuum tank is more than 10 times of inflatable chamber volume.
4. a kind of positive pressure flow box according to claim 1, is characterized in that, the dowel being provided with intersection is interrupted in described flexible partition bottom surface.
5. a kind of positive pressure flow box according to claim 1, is characterized in that, described air blast is Frequency Converter Control, setting pressure table and pressure sensor on described vacuum tank, and the signal output part of pressure sensor is connected with the start stop signal input of frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520738614.XU CN205024522U (en) | 2015-09-22 | 2015-09-22 | Positive pressure flow box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520738614.XU CN205024522U (en) | 2015-09-22 | 2015-09-22 | Positive pressure flow box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205024522U true CN205024522U (en) | 2016-02-10 |
Family
ID=55257072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520738614.XU Expired - Fee Related CN205024522U (en) | 2015-09-22 | 2015-09-22 | Positive pressure flow box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205024522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505183A (en) * | 2018-12-29 | 2019-03-22 | 周柏太 | A kind of positive pressure flow box |
-
2015
- 2015-09-22 CN CN201520738614.XU patent/CN205024522U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505183A (en) * | 2018-12-29 | 2019-03-22 | 周柏太 | A kind of positive pressure flow box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20160922 |