CN219604031U - Felt line forming diffuser - Google Patents

Abstract

The utility model discloses a felt wire forming diffuser, which comprises a box body, wherein the box body comprises a box body front section, a box body middle section and a box body rear section from the beginning to the end, a plurality of pulp inlet branch pipes are arranged at the bottom of the box body front section, ultrasonic flow meters are fixedly arranged on each pulp inlet branch pipe, a mixing tank is arranged in the box body front section, a plurality of step diffusers are arranged in the box body middle section, the inlet ends of the step diffusers are tapered round holes, the outlet ends of the step diffusers are tapered square holes, a pulp discharging plate with an arc-shaped structure is arranged in the box body rear section, the outlet ends of the pulp inlet branch pipes are communicated with the inlet ends of the mixing tank, the outlet ends of the step diffusers are positioned above the pulp discharging plate, and pulp blocking plates are arranged on two sides of the pulp discharging plate. The utility model has simple structure, easy adjustment of slurry flow speed and uniform slurry distribution, thereby improving the production quality of products.

Description

Felt line forming diffuser

Technical Field

The utility model belongs to the field of papermaking equipment, and particularly relates to a felt line forming diffuser.

Background

In the paper industry, the flatness and uniformity of the appearance are extremely high in index requirements. At present, the most critical component of the paper machine in the paper industry is the headbox, which is the junction that connects the "run" and "forming" sections. In order to achieve uniform quantitative distribution in the paper cross-web direction, good uniformity requires that the pulp in the headbox be uniformly and stably distributed and that the fibers in the pulp not be agglomerated.

In order to achieve the above-mentioned object, in the prior art, a stepped diffuser is generally used as a pulp distribution rectifying element, which mainly plays roles of pulp distribution, rectifying and generating micro-turbulence dispersion fiber flocculation, and plays a vital role in the pulp flow condition of a complex flow field in a headbox. The outflow end of the traditional stepped diffuser adopts a circular spray hole, the total area is small, and enough water flow is needed for meeting the production, so that the pressure of the front section of the box body can be increased, the water flow speed flowing through the diffuser is too high, and the appearance and uniformity of the product are not facilitated.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the felt line forming diffuser which is simple in structure, easy to adjust the flow rate and uniform in slurry distribution.

The technical scheme adopted by the utility model is as follows:

the utility model provides a felt line shaping diffuser, it includes the box, the box includes the box anterior segment from beginning to terminal, box middle section and box back end, the bottom of box anterior segment is equipped with a plurality of thick liquid branch pipe, equal fixed mounting has ultrasonic flowmeter on every thick liquid branch pipe, be equipped with the mixed pond in the box anterior segment, be equipped with a plurality of ladder diffuser in the box middle section, the entrance point of ladder diffuser is the tapered circular opening, the exit end of ladder diffuser is the tapered square hole, be equipped with the thick liquid board that is arc structure in the box back end, the exit end of thick liquid branch pipe is linked together with the entrance point of mixed pond, the exit end of mixed pond is linked together with the entrance point of ladder diffuser, the exit end of ladder diffuser is located the top of thick liquid board, all be equipped with the fender thick liquid board on the both sides of thick liquid board.

Preferably, a display screen is arranged on the meter body of the ultrasonic flow meter.

Preferably, a valve is arranged on the pipeline of each pulp inlet branch pipe.

Preferably, the spacing between adjacent pulp inlet branch pipes is set to 40-45mm.

Preferably, a plurality of observation windows are arranged on the front section of the box body, transparent organic glass is arranged on the observation windows, and the stepped diffuser can be directly seen through the observation windows.

Preferably, the slurry baffle is a stainless steel plate with high elasticity.

The utility model has the beneficial effects that:

(1) According to the utility model, the outlet end of the stepped diffuser is changed into a square hole with taper from the original round hole with taper, so that the sprayable area of the stepped diffuser is increased by 30%, the flow velocity of slurry is slowed down, and the appearance and uniformity of the product are improved;

(2) According to the utility model, the ultrasonic flow meters are arranged on the pipelines of each pulp inlet branch pipe, so that the flow velocity of each pulp inlet branch pipe can be accurately measured, the pulp quantity conveyed into the mixing tank by each pulp inlet branch pipe is controlled to be the same, and after being uniformly mixed by the mixing tank, the quantitative distribution of the paper in the transverse direction is more uniform;

(3) The slurry discharging plate with an arc-shaped structure is arranged below the outlet end of the step diffuser and in the rear section of the box body, and is used for collecting and rapidly discharging slurry discharged from the step diffuser, so that the uniformity of products is ensured, and the production quality of the products is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic view of a stepped diffuser according to the present utility model;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

in the figure, 1, a box body; 2. a front section of the box body; 3. a middle section of the box body; 4. the rear section of the box body; 5. a pulp inlet branch pipe; 6. a mixing tank; 7. a step diffuser; 8. a pulp discharging plate; 9. an ultrasonic flow meter; 10. a valve; 11. an observation window; 12. a slurry baffle plate; 13. and a display screen.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1-5, the utility model comprises a box body 1, wherein the box body 1 comprises a box body front section 2, a box body middle section 3 and a box body rear section 4 from the beginning to the end, and the box body front section 2, the box body middle section 3 and the box body rear section 4 are designed as a whole; the bottom of the front section 2 of the box body is provided with a plurality of pulp inlet branch pipes 5, a mixing tank 6 is arranged in the front section 2 of the box body, the distance between every two adjacent pulp inlet branch pipes 5 is set to be 40-45mm, a valve 10 is arranged on a pipeline of each pulp inlet branch pipe 5, and each pulp inlet branch pipe 5 is fixedly provided with an ultrasonic flow meter 9 which can accurately measure the flow rate of pulp of each pulp inlet branch pipe 5, so that the quantity of the pulp fed into the mixing tank 6 by each pulp inlet branch pipe 5 is controlled to be the same, and the quantitative distribution of the paper transverse direction is more uniform after the pulp is uniformly mixed by the mixing tank; the display screen 13 is arranged on the meter body of the ultrasonic flow meter 9, so that operators can check the flow velocity of the slurry in each slurry inlet branch pipe 5 in real time.

The box middle section 3 of this equipment is equipped with a plurality of ladder diffuser 7 in, and the entrance point of ladder diffuser 7 is taking tapered circular hole, and the exit end of ladder diffuser 7 is taking tapered square hole for ladder diffuser can spray the area increase 30%, slows down the thick liquids velocity of flow, and thick liquids can evenly, steadily distribute and the thick liquids in fibre can not the flocculation simultaneously, improves product outward appearance and degree of consistency.

The outlet end of the pulp inlet branch pipe 5 of the equipment is communicated with the inlet end of the mixing tank 6, the outlet end of the mixing tank 6 is communicated with the inlet end of the step diffuser 7, the outlet end of the step diffuser 7 is positioned above the pulp discharge plate 8 in an arc structure in the rear section 4 of the box body, pulp baffle plates 12 are arranged on two sides of the pulp discharge plate 8, the pulp baffle plates 12 are stainless steel plates with high elasticity, the pulp inlet branch pipe 5 conveys various pulps into the mixing tank 6 for mixing, the evenly mixed pulps slowly and uniformly flow into the pulp discharge plate 8 through the step diffuser 7 for being collected and rapidly discharged to the surface of a product, the uniformity of the product is ensured, and the production quality of the product is improved.

The box front section 2 of the equipment is provided with a plurality of observation windows 11, transparent organic glass is arranged on the observation windows 11, and the stepped diffuser 7 can be directly seen through the observation windows 11.

The application process of the utility model is as follows:

when the device is used, an operator firstly opens the valves 10 on the pipelines of all the pulp inlet branch pipes 5, simultaneously uses the ultrasonic flow meters 9 to detect the flow velocity of pulp in each pulp inlet branch pipe 5, manually adjusts the valves 10, ensures the consistency of the flow velocity of pulp in each pulp inlet branch pipe 5 through the display screen 13, ensures that the pulp in the pulp inlet branch pipes 5 is continuously conveyed into the mixing tank 6, slowly and uniformly flows into the pulp discharge plate 8 through the step diffuser 7 after the pulp is uniformly mixed, and then is collected and rapidly discharged to the surface of a product, thereby ensuring the uniformity of the product and improving the quality of product production.

The other non-illustrated parts to which the present utility model relates are the same as in the prior art.

Claims (6)

1. The utility model provides a felt line shaping diffuser, characterized by includes box (1), box (1) is including box anterior segment (2), box middle section (3) and box back end (4) from beginning to end, the bottom of box anterior segment (2) is equipped with a plurality of and advances thick liquid branch pipe (5), every advance equal fixed mounting in thick liquid branch pipe (5) has ultrasonic flowmeter (9), be equipped with in box anterior segment (2) and mix pond (6), be equipped with a plurality of ladder diffuser (7) in box middle section (3), the entrance point of ladder diffuser (7) is taking the circular hole of tapering, the exit end of ladder diffuser (7) is taking the square hole of tapering, be equipped with in box back end (4) and be in arc structure's pulp discharging plate (8), advance the exit end of thick liquid branch pipe (5) with the entrance point of mixing pond (6) is linked together, the exit end of mixing pond (6) with the exit end that ladder diffuser (7) are linked together, exit end that ladder diffuser (7) are equipped with pulp discharging plate (8) both sides are located pulp discharging plate (8).

2. The felt wire forming diffuser according to claim 1, characterized in that a display screen (13) is provided on the surface of the ultrasonic flow meter (9).

3. A felt wire forming diffuser according to claim 1, wherein a valve (10) is mounted on the piping of each of the slurry inlet branch pipes (5).

4. A felt wire forming diffuser according to claim 1, wherein a spacing between adjacent slurry inlet legs (5) is set to 40-45mm.

5. The felt wire forming diffuser according to claim 1, characterized in that a plurality of observation windows (11) are arranged on the front section (2) of the box body, transparent organic glass is arranged on the observation windows (11), and the stepped diffuser (7) can be directly seen through the observation windows (11).

6. The felt wire form diffuser of claim 1, wherein the slurry baffle (12) is a stainless steel plate having high elasticity.