CN201127868Y

CN201127868Y - Paint pressurized screen

Info

Publication number: CN201127868Y
Application number: CNU2007200589562U
Authority: CN
Inventors: 冯式忠; 李健辉
Original assignee: JIANGMEN JINGHUA LIGHT INDUSTRIAL MACHINERY Co Ltd
Current assignee: JIANGMEN JINGHUA LIGHT INDUSTRIAL MACHINERY Co Ltd
Priority date: 2007-10-26
Filing date: 2007-10-26
Publication date: 2008-10-08
Anticipated expiration: 2017-10-26

Abstract

The utility model discloses a coating pressure screen, comprising a screen body which is in a hollow structure, a screen cylinder capable of rotating around a central shaft is arranged inside a cavity, a screen cylinder is arranged on the screen body via a central shaft, a driver is arranged outside the screen body, the output end of the driver is connected with the screen cylinder, a helical guide plate is arranged on the surface of the screen cylinder, a scraper is arranged outside the guide plate, a screen cloth is arranged outside the screen cylinder, the gap between the screen cloth and the screen cylinder forms an inner screen chamber, and the scrapper is arranged inside the inner screen chamber and is tightly contacted with the surface of the screen cloth. The coating pressure screen adopts active mode filtration, the dynamic power arranged on the coating pressure screen can drive the screen cylinder to rotate, the helical guide plate arranged on the screen cylinder and the scraper can effectively scrape the particles attached on the screen cloth to prevent the screen cloth to be clogged and at the same time, downward thrust force is generated, thereby favoring the filtered coating to rapidly flow out of the screen for usage; totally enclosed type pressurized screening is adopted during the whole process, thereby preventing the re-drying or the generation of air bubbles caused by the evaporation of coating thinner; the coating pressure screen is convenient to use and can effectively improve the coating quality and the coating efficiency.

Description

A kind of coating pressure sieve

Technical field

The utility model relates to a kind of sieves, particularly a kind ofly is applied to print or coating filters when paper industry coating composition or pigment coloring pressurized screen.

Background technology

In industries such as papermaking and printing, the uniformity coefficient of coating coating or pigment coloring directly has influence on paper quality and printing quality, in the past when using coating or pigment, be coating or pigment to be added the entry equal solvent be blended into suitable viscosity, be delivered on painting cloth-knife or the printing cutter by carrier pipe then and use, for preventing that the larger particles in the coating from entering painting cloth-knife or influence coating of printing cutter or printing quality, on the carrier pipe sieves need be set, can screen out undissolved larger particles.Sieves has two kinds of closed and open types usually by version, using more enclosed filter sieve at present substantially all is the filter or the screen pack of passive filtration, the type sieves is simple in structure, do not dispose power, just utilize pressure that coating is carried out forced filtration merely, bigger particle can not be deposited in one side of sieves by sieves, what have sticks to or is trapped on the screen cloth, so be easy to stop up carrier pipe when using, need often cleaning or change screen cloth, have a strong impact on production efficiency, even owing to mass flow discrepancy influences coating or printing quality, and such sieves range of application is narrow, only is applicable to that low viscous coating filters, and is undesirable to the coating filter effect of high viscosity low-solid content; The open type filter type is that coating is incorporated into vibratory sieve, because the vibration of vibratory sieve, larger particles is difficult for sticking on the sieves, guarantee the abundant filtration of coating and flow evenly, but because the coating that filters with the air contact, defectives such as bubble occur easily in the use, and the moisture equal solvent in the coating distributes easily, coating is become dry, and solid content changes greatly, influences coating quality and effect.

The utility model content

In order to address the above problem, the purpose of this utility model is to provide a kind of compact conformation, the totally enclosed type coating pressure sieve of good filtration effect, self configuration power.

The technical solution of the utility model is:

A kind of coating pressure sieve, comprise sieve nest, sieve nest is a hollow structure, and the screen cylinder that can rotate around central shaft is installed in the cavity, screen cylinder is installed on the sieve nest by central shaft, the sieve nest outside is equipped with driver, and driver output end is connected with screen cylinder, and the screen cylinder surface is provided with the spirality guide plate, the guide plate outside is equipped with scraper, the screen cylinder outside is equipped with screen cloth, and sieve thorax in the gap between screen cloth and the screen cylinder forms closely contacts in the sieve thorax and with screen surface in described scraper is located at.

As the improvement of technical scheme, screen cloth is the endless metal net with spiral screen seam, and its direction is identical with the guide plate hand of spiral.

As the improvement of technical scheme, screen cylinder is tapered, and a bigger end places the top of sieve nest.

The beneficial effects of the utility model are: the utility model adopts active mode to filter, the screen cylinder of self being furnished with driver and rotating with driver, screen cylinder is provided with the spirality guide plate, scraper is equipped with in the guide plate outside, during rotation, the coating particles that scraper on the screen cylinder can will not lead to screen cloth strikes off, and effectively prevents the particle adhesion or is deposited in screen surface and stops up screen cloth, can produce downward thrust during the rotation of spirality guide plate, the meticulous coating after helping filtering flows out the outer use of sieve fast; In addition, screen cloth has spiral seam, can allow scraper tightr with contacting of screen cloth, reduce uneven wear and effectively promote filter effect, whole process adopts the screening of totally enclosed type pressure, can fully avoid the dry and hard again or generation bubble of paint thinner evaporation back coating, easy to use and reliable, can effectively improve coating quality and coating efficiency.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the structural representation of the utility model embodiment screen cylinder;

Fig. 3 is the structural representation of the utility model embodiment screen cloth.

The specific embodiment

With reference to Fig. 1, a kind of coating pressure sieve of the present utility model, comprise sieve nest 1, sieve nest 1 is a hollow structure, the screen cylinder 2 that can rotate around central shaft is installed in the cavity, screen cylinder 2 is installed on the sieve nest 1 by central shaft, sieve nest 1 outside is equipped with driver 4, driver 4 outputs are connected with screen cylinder 2, screen cylinder 2 surfaces are provided with spirality guide plate 20, and guide plate 20 outsides are equipped with scraper 21, and screen cylinder 2 outsides are equipped with screen cloth 3, sieve thorax 22 in gap between screen cloth 3 and the screen cylinder 2 forms closely contacts in the sieve thorax 22 and with screen cloth 3 surfaces in described scraper 21 is located at.

With coating composition technology is example, during work, the coating that configures is sent into pressurized screen inside and entered sieve nest 1 inner chamber from input channel 11, the coating that enters sieve nest 1 inner chamber rotates together with screen cylinder 2 end faces, sieve thorax 22 under centrifugal action and gravity effect, entering, interior sieve thorax 22 is provided with guide plate 20, the coating of sieve thorax 22 is under guide plate 20 effects in entering, following screen cylinder 2 rotates together, be subjected to centrifugal action, coating is outwards motion radially, and meticulous coating is by screen cloth 3, and flow to the bottom along sieve nest 1 inwall and to be focused to the sieve nest bottom and constantly to be delivered to painting cloth-knife from output channel 16, the larger particles by screen cloth 3 does not stick to the screen cloth inner surface, under the effect of scraper 21, coating particles scraped from screen cloth 3 inner surfaces from, the bottom of sieve thorax 22 in being stacked at last is outside slag-drip opening 17 discharge pressures sieve.

With reference to Fig. 2, as further improvement of the utility model, screen cylinder 2 is tapered, a bigger end places the top of sieve nest 1, in rotary course, cooperates spirality guide plate 20, can produce a downward propulsive force, under this propulsive force effect, meticulous coating is easier in screen cloth 3, and can quicken to flow to output channel 16 by the coating behind the screen cloth 3.

With reference to Fig. 3, in order to allow scraper 21 contact, reduce the wearing and tearing that scraper 21 and screen cloth 3 cause because of friction simultaneously again with screen cloth 3 driving fit more well, screen cloth 3 is the endless metal nets with spiral screen seam, its direction is identical with guide plate 20 hands of spiral.If the screen cloth of screen cloth 3 is vertical masonry joints, promptly the mesh wire of direction is vertical mutually in length and breadth, when scraper 21 scrapes in screen cloth 3 surface rotations, same position contacts with same mesh on the screen cloth 3 on the scraper 21, make scraper 21 uneven wears easily, also be difficult to after the use guarantee that scraper 21 and screen cloth 3 fit tightly, cause the filter effect variation, also be easy to generate resonance and quicken the damage of parts such as screen cloth 3 and scraper 21, for avoiding the generation of above-mentioned phenomenon, the sieve slit of screen cloth is made into spirality, and its hand of spiral is provided with according to the spirality guide plate 20 on the screen cylinder 2, forms the spiral screen seam.Can allow same position and different grid contacts on the scraper 21 so fully, reach uniform wear, the shock and vibration when also reducing screen cylinder 2 with screen cloth 3 relative motions increase the stability of work and increase the service life.

For being easy to install and maintain, the top of sieve nest 1 is provided with sieve nest lid 10, and sieve nest lid 10 is articulated and connected with sieve nest 1 top side, and clamping device 5 is installed on the sieve nest 1, and clamping device 5 compresses sieve nest lid 10 by its press strip 51.Rotation hand wheel 50 can unclamp or compress press strip 51, after press strip 51 unclamps, sieve nest can be covered 10 and raise by its hinge, to safeguarding or clear up in its inside; Carry out opposite operation and can close and compress sieve nest lid 10.

Do not scraped behind screen cloth by scraper 21 by the larger particles of screen cloth 3, with screen cylinder 2 motions, sieve thorax 22 bottoms in gathering, accumulation too much will influence filter effect, for conveniently draining aggregated particle, the bottom of sieve nest 1 is provided with slag-drip opening 17, and in the sieve thorax 22, the particle of gathering can be discharged from slag-drip opening 17 easily in slag-drip opening 17 extended to.

After work a period of time, need cleaning or cleaning pressurized screen inside to guarantee the effect of its normal operation and filtration, for this reason, sieve nest 1 is provided with exhaust/rinse mouth 13, exhaust/rinse mouth 13 communicates with sieve nest 1 inside, sieve nest 1 bottom is provided with backwash mouth 18, and backwash mouth 18 is arranged at the output of sieve nest 1; As optimal way, backwash mouth 18 is arranged on the output channel 16.During cleaning, close input channel 11, pour clean water or air from exhaust/rinse mouth 13, residue etc. just can eject for 17 li from output channel 16 or slag-drip opening; Clean more completely if desired, input channel 11 and output channel 16 can be closed, pour clean water or air from backwash mouth 18, from the direction opposite with operate as normal cleaning down is carried out in pressurized screen inside, water that pours or air will be discharged from exhaust/rinse mouth 13.Exhaust/rinse mouth 13 is arranged at also has same effect on the input channel 11.

More than be preferred implementation of the present utility model, other equivalent technical solutions also should be within protection domain of the present utility model.

Claims

1. a coating pressure sieves, it is characterized in that: comprise sieve nest (1), sieve nest (1) is a hollow structure, the screen cylinder (2) that can rotate around central shaft is installed in the cavity, screen cylinder (2) is installed on the sieve nest (1) by central shaft, sieve nest (1) outside is equipped with driver (4), driver (4) output is connected with screen cylinder (2), screen cylinder (2) surface is provided with spirality guide plate (20), guide plate (20) outside is equipped with scraper (21), screen cylinder (2) outside is equipped with screen cloth (3), and sieve thorax (22) in the gap between screen cloth (3) and the screen cylinder (2) forms closely contacts in the sieve thorax (22) and with screen cloth (3) surface in described scraper (21) is located at.

2. a kind of coating pressure sieve according to claim 1, it is characterized in that: screen cloth (3) is the endless metal net with spiral screen seam, and its direction is identical with guide plate (20) hand of spiral.

3. a kind of coating pressure sieve according to claim 1, it is characterized in that: screen cylinder (2) is tapered, and a bigger end places the top of sieve nest (1).

4. a kind of coating pressure sieve according to claim 1, it is characterized in that: the top of sieve nest (1) is provided with sieve nest lid (10), sieve nest lid (10) is articulated and connected with sieve nest (1) top side, clamping device (5) is installed on the sieve nest (1), and clamping device (5) compresses sieve nest lid (10) by its press strip (51).

5. a kind of coating pressure sieve according to claim 1, it is characterized in that: the bottom of sieve nest (1) is provided with slag-drip opening (17), sieves in the thorax (22) in slag-drip opening (17) extends to.

6. a kind of coating pressure sieve according to claim 1, it is characterized in that: sieve nest (1) is provided with exhaust/rinse mouth (13), exhaust/rinse mouth (13) communicates with sieve nest (1) inside, sieve nest (1) bottom is provided with backwash mouth (18), and backwash mouth (18) is arranged at the output of sieve nest (1).