SU983160A1 - Felt washer in paper-making machine - Google Patents

Description

The invention relates to devices for the conditioning of pulp and paper-making machines and will find application in the pulp and paper and chemical industries.

A well-known slit cloth washer, which is a tube with a slit opening, through which the water-air mixture is sucked under the action of a vacuum created in the tube by a rarefaction generator Cl3

However, for normal operation of the dilution generator, the installation of a water separator, which is difficult to manufacture, and has a significant metal consumption, is required after the cleaning of the machine, which complicates the design and increases its dimensions. In addition, due to the significant length of the pipeline from the washing machine to the water separator, pressure loss occurs, which leads to a decrease in the economic efficiency of the washing machine.

Closest to the invention is a centrifugal water separator containing a cylindrical body with tangentially mounted nozzles for supplying a water-air mixture. And water and an axial nozzle for

exhaust air. The water-air mixture, when released through a tangential nozzle into a pipe, is separated by means of centrifugal forces into water and air, which are independently discharged through the above-specified C 2 pipes.

However, the known centrifugal water separator cannot be used

for air conditioning suko, since the tangential tube of the mixture supply pipe has a round inlet of considerable area, and this area is equal to the square of the rectangular

15 sections of the socket at the point of interface with the pipe i A round hole cannot be used for the washing machine, since the conditioning of the cloth must be made to the width of the machine. Point

The 20 assigned area assignment does not provide for the separation of the water-air mixture, diverted from the cloth, since the air-air mixture speed at such a ratio of 25 does not exceed 10 m / s, and for normal separation a speed of 15-30 JK / C j is needed

Claims (2)

The purpose of the invention is to reduce the metal content of the cloth washing and cost-effectiveness of conditioning the cloth. The goal is achieved by the fact that a tangentially installed nozzle for draining the water-air mixture of a cloth machine of a papermaking machine containing a cylindrical body with tangentially installed nozzles for draining the water-air mixture and water and an axial nozzle for draining air has two plates, one of which is made of wear-resistant material has at least one target hole and is mounted on the nozzle above its inlet, and the other is located inside it and is attached at one end to a cylindrical the surface of the body, the inlet port of the nozzle is rectangular, and its cross-sectional area at the interface with the cylindrical body is not less than 1.2 times smaller than the area of the slit holes of the plate of wear-resistant material. In this case, the plate of wear-resistant material can be made of silicon carbide or high molecular weight polyethylene. The drawing shows the proposed device, a General view. The device comprises a pipe 1, a tanned tube 2 of the water-air mixture, an axial pipe 3, an air outlet and a tangential pipe 4, a water outlet. The inlet of the tangential nozzle 2 has a rectangular cross section mounted perpendicular to the movement of the web. It is covered with a wear-resistant material, such as silicon carbide plate 5. At least one slot 6 is made in plate 5. The inside nozzle 2 is provided with a plate 7 tangentially adjacent to pipe 1 and the continuation of one of the walls of the pipe. The nozzle cross-sectional area at the interface with the pipe (O-o) is not less than 1.2 times smaller than the area of the slots 6. The pipe 1 is located horizontally. Sukomoyka works as follows. Under the action of the vacuum generator, the polluted water from the cloth together with the air is sucked through the slots 6 into the interior of the laundry room. Under the action of centrifugal forces in the pipe i, water is separated from the water-air mixture. The speed of the water moving through the nozzle channel is accelerated due to the narrowing of the channel in the OH section. The speed of the water-air mixture passing through the slit b into the inlet nozzle 2 (for modern woolen with the current applied at 40kPa vacuum cleaning equipment) is about -10 m / s. Taking into account that the separation requires a speed of 15-30 m / s, it is necessary to narrow the sectional area O-O with respect to the area of the slots 6 by no less than 1.2 times. When this Ratio is reduced, the rate of the air / water mixture is lower than that required for normal separation (less than 15 m / s). In comparison with the pipeline, known in the proposed washing machine, which goes from nozzle 3 to the discharge generator, has a smaller diameter, as a result of which the intensity of the pipeline is reduced. The design of the washing machine ensures the separation of water, therefore there is no need to use a water separator. In addition, the drainage water outlet in the proposed washing machine is located 1-2 m higher than the flange for water outlet in the known air conditioning plants, which significantly reduces the cost of building a hydraulic lock. Claim 1. Paper-cleaning machine for papermaking machine, comprising a cylindrical body with tangentially installed nozzles for draining the water-air mixture and water and an axial nozzle for exhausting air, so as to reduce the metal intensity of the laundry room and the cost-effectiveness of air conditioning , the tangentially installed branch pipe for removal of the water-air mixture has two plates, one of which is made of WEAR-RESISTANT material, has at least one slotted hole and is mounted on a patr the key is above its inlet, and the other is located inside it and is attached at one end to the cylindrical surface of the body, the inlet of the nozzle is rectangular, and its cross-sectional area at the interface with the cylindrical body is not less than 1.2 times smaller than the area slit holes of the plate from wear-resistant material. 2. Sugar washer. Claim 1, characterized in that the wafer of wear-resistant material is made of silicon carbide or high molecular weight polyethylene. Sources of information taken into account in the examination 1.Iidlina I.Ya. Paper and finishing machines. 1970, p. 293. 2.Prospekt firm Sulzer, 1976, No. 3304189 (prototype). To dilution generator Cloth B hydrozat9or