Spraying nozzle system for broke thickener

Abstract

The utility model discloses a spray nozzle system for a broke thickener, which is used for reliably uncovering and stripping filter sector slurry of the thickener, the spray nozzle system connected with a water source is arranged at an inlet above a broke pit and comprises a spray pipe and a plurality of groups of spray nozzle heads matched with each other for use, and the plurality of groups of spray nozzle heads are uniformly mounted on the spray pipe. The inclined mounting angles of the multiple groups of nozzle heads are synchronously adjusted by controlling the position and the rotating angle of the spraying pipe; each nozzle head comprises a spraying opening, a spraying cavity and a threaded connector, a spraying hole communicated with the spraying cavity is further formed in the center of the top end of each spraying opening, a fan-shaped opening communicated with the spraying hole is further formed in the top end face of each spraying opening in a sunken mode, and the two sides of each fan-shaped opening are symmetrically provided with excessive fan-shaped openings used for increasing spraying water; the water passing amount of spraying water is increased through the fan-shaped notch in the top end face of the nozzle head, fibers are sprayed out through high pressure, the problem that the nozzle is blocked is solved, a filter screen is effectively prevented from being pasted, and the broke filtering efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the spray processing technology of a waste paper concentrator in the pulp section, and particularly relates to a nozzle system for spraying of a waste paper concentrator.

Background Art

[0002] In the papermaking process, pulp is a fibrous substance made from plant fibers through different processing methods. According to the fiber raw materials used, it can be divided into wood pulp, straw pulp, hemp pulp, reed pulp, sugarcane pulp, bamboo pulp, rag pulp, etc. In the existing waste paper spraying device, the water used in the spray water pipe of the waste paper concentrator is the clear water pumped by a multi-tray spray white water pump. The pressure is 12 bar and it is introduced into the nozzles of the high-pressure spray pipe and sprayed into the forming section. The existing nozzle diameter is only 0.1 - 0.3 mm. The existing water quality contains more fine fibers. After long-term use, fine fibers will remain in the pipe, resulting in the nozzles being blocked by excessive fibers from time to time and unable to be used. As a result, the waste paper cannot be peeled off in time, causing the filter fan-shaped filter screen to be clogged, affecting the waste paper filtration quality, and reducing the production efficiency.

Content of the Utility Model

[0003] The utility model provides a nozzle system for spraying of a waste paper concentrator. By means of a fan-shaped notch on the top end surface of the nozzle head, the water flow rate of the sprayed water is increased, and the fibers are ejected by high pressure to solve the problem of nozzle blockage. And the whole use process does not require lubrication with grease, and the later maintenance is very little, effectively avoiding the filter screen from being clogged and improving the waste paper filtration efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A nozzle system for spraying of a waste paper concentrator is used for the reliable peeling and stripping of the pulp on the filter fan surface of the concentrator. The nozzle system connected to the water source is arranged at the upper entrance of the waste paper pit, and includes a spray pipe and multiple groups of nozzle heads that are used in cooperation with each other. The spray pipe is directly communicated with the supplied water source to keep the water pressure constant.

[0006] Multiple groups of the nozzle heads are uniformly installed on the spray pipe in a straight line and have an inclined installation angle that facilitates the pulp to smoothly fall into the waste paper pit. And the inclined installation angles of multiple groups of the nozzle heads are synchronously adjusted by controlling the position and rotation angle of the spray pipe.

[0007] Each nozzle head includes a spray orifice, a spray cavity, and a threaded connection head arranged at the rear end. A spray hole communicating with the spray cavity is also opened at the center of the top end of the spray orifice. The spraying direction of the liquid ejected outward through the spray hole is coaxially arranged with the center line of the spray cavity. A fan-shaped notch that communicates with the spray hole and is symmetrically arranged on both sides for increasing the water flow rate of the sprayed water is also recessed on the top end surface of the spray orifice.

[0008] Preferably, the center of the opening of the sector-shaped notch intersecting with the injection hole gradually converges from large to small and from deep to shallow from the center to the outer edge of the nozzle orifice.

[0009] Preferably, the nozzle head is integrally formed of 316 stainless steel.

[0010] Preferably, the front end of the injection cavity is a curved surface structure, and the circular injection hole at the center of the top end of the nozzle orifice intersects with the curved surface structure at the front end of the injection cavity.

[0011] Preferably, the curved surface structure is a spherical surface.

[0012] The beneficial effects of the present utility model are as follows:

[0013] In view of the problem that after the spray pipe is used for a long time, fine fibers will remain in the pipe, resulting in the nozzle being blocked from time to time due to excessive fibers and unable to be used, thus affecting the untimely stripping of waste paper, causing the filter screen to be clogged with mesh, and affecting the waste paper filtering quality; a sector-shaped notch is recessed and opened on the top end surface of the nozzle orifice, which is symmetrically arranged on both sides and used to increase the excess amount of sprayed water. The center of the opening of the sector-shaped notch intersecting with the injection hole gradually converges from large to small and from deep to shallow from the center to the outer edge of the nozzle orifice. In this way, the excess amount of sprayed water is increased through the sector-shaped notch on the top end surface of the nozzle head, and the clear water is sprayed out from the crescent-shaped symmetrical spray slots of the sector-shaped notch, and the fibers are ejected by using high pressure, solving the problem of nozzle blockage, effectively avoiding the clogging of the filter screen with mesh, improving the waste paper filtering efficiency, facilitating the reliable peeling and stripping of the filter fan net pulp, and effectively improving the production efficiency.

[0014] Moreover, the entire use process does not require lubrication with grease, and the later maintenance is very little.

Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a top-view structural schematic diagram of the present utility model;

[0017] Figure 3 is a cross-sectional structural schematic diagram of the present utility model.

Detailed Embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] A nozzle system for spraying in a broke concentrator, as Figures 1 to 3 shown, is used for reliable peeling and stripping of the fan screen pulp. The nozzle system connected to the water source is arranged at the upper entrance of the broke pit, and includes a spray pipe (not shown in the figure) and multiple groups of nozzle heads used in cooperation with each other. The spray pipe is directly connected to the supplied water source to keep the water pressure constant; multiple groups of nozzle heads are evenly installed on the spray pipe in a straight line and have an inclined installation angle that facilitates the smooth fall of the pulp into the broke pit, and the inclined installation angles of multiple groups of nozzle heads are synchronously adjusted by controlling the position and rotation angle of the spray pipe; all nozzle heads are integrally formed with 316 stainless steel. Each nozzle head includes a spray orifice 1, a spray chamber 2, and a threaded connector 3 provided at the rear end. A circular spray hole 4 communicating with the spray chamber 2 is also opened at the center of the top end of the spray orifice 1. The spraying direction of the liquid sprayed outward from the spray hole 4 is coaxially arranged with the center line of the spray chamber 2. A fan-shaped notch 5 communicating with the spray hole 4 and symmetrically arranged on both sides for increasing the excess of the sprayed water is recessed on the top end surface of the spray orifice 1. The center of the intersection of the opening of the fan-shaped notch 5 and the spray hole 4 to the outer edge of the spray orifice 1 gradually converges from large to small and from deep to shallow in an arc transition.

[0020] Continue as Figures 1 to 3 shown, the front end of the spray chamber 2 is a curved surface structure, and the curved surface structure is a spherical surface. The circular spray hole 4 at the center of the top end of the spray orifice 1 intersects with the curved surface structure at the front end of the spray chamber 2.

[0021] In this embodiment, a fan-shaped notch 5 symmetrically arranged on both sides and used for increasing the excess of the sprayed water is recessed on the top end surface of the spray orifice 1 of the nozzle head. The center of the intersection of the opening of the fan-shaped notch 5 and the spray hole 4 to the outer edge of the spray orifice 1 gradually converges from large to small and from deep to shallow. In this way, the excess amount of the sprayed water is increased through the fan-shaped notch 5 on the top end surface of the nozzle head. The clear water is sprayed out from the crescent-shaped symmetric spray slots of the fan-shaped notch 5, and the fibers are sprayed out by using high pressure, solving the problem of nozzle blockage, effectively avoiding the clogging of the filter screen, improving the broke filtration efficiency, and effectively improving the production efficiency.

[0022] The above-described embodiments are only preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Any equivalent changes made according to the shape, structure, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A nozzle system for spraying a broke thickener, used for reliable removal and stripping of slurry on the filter fan of the thickener, the nozzle system connected to the water source is arranged at the upper entrance of the broke pit, characterized in that: It includes a spray pipe and a plurality of nozzle heads used in coordination with each other, wherein the spray pipe is used to maintain a constant water pressure and is directly connected to a water source; The plurality of groups of nozzle heads are evenly installed on the spray pipe in a straight line and have an inclined installation angle that facilitates the slurry to smoothly fall into the broken paper pit, and the inclined installation angles of the plurality of groups of nozzle heads are synchronously adjusted by controlling the position and rotation angle of the spray pipe; Each of the nozzle heads includes a nozzle, an injection cavity and a threaded connector arranged at the rear end. A spray hole connected to the injection cavity is also provided at the center of the top end of the nozzle. The injection direction of the liquid sprayed outward by the injection hole is coaxially arranged with the center line of the injection cavity. The top end surface of the nozzle is also recessed to provide a fan-shaped notch connected to the injection hole and symmetrically arranged on both sides for increasing the excess amount of spray water.

2. A nozzle system for spraying a broke thickener according to claim 1, characterized in that: The center where the opening of the fan-shaped notch intersects with the injection hole to the outer edge of the injection hole gradually converges from large to small and from deep to shallow.

3. The nozzle system for spraying a broke thickener according to claim 1, characterized in that: The nozzle head adopts a 316 stainless steel one-piece molding structure.

4. The nozzle system for spraying a broke thickener according to claim 1, characterized in that: The front end of the injection cavity is a curved surface structure, and the circular injection hole at the center of the top end of the nozzle intersects with the curved surface structure at the front end of the injection cavity.

5. The nozzle system for spraying a broke thickener according to claim 4, characterized in that: The curved surface structure is a spherical surface.

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