CN219604032U - Felt line diffuser with uniform flow distribution - Google Patents

Abstract

The utility model discloses a felt wire diffuser with uniform flow distribution, 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 open end to the tail end, a plurality of slurry inlet branch pipes are arranged at the bottom of the box body front section, ultrasonic flow meters are arranged on the slurry inlet branch pipes through U-shaped clamping rings and fixedly arranged on the U-shaped clamping rings, 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 slurry discharging plate with an arc-shaped structure is arranged in the box body rear section, the outlet ends of the slurry inlet branch pipes are communicated with the inlet ends of the mixing tank, the outlet ends of the step diffusers are positioned above the slurry discharging plate, and slurry blocking plates are arranged on two sides of the slurry discharging plate. The utility model has simple structure, low cost, easy adjustment of slurry flow speed and uniform slurry distribution.

Description

Felt line diffuser with uniform flow distribution

Technical Field

The utility model belongs to the field of papermaking equipment, and particularly relates to a felt wire diffuser with uniform flow distribution.

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 traditional ladder diffuser outflow end adopts circular jet orifice, and total area is little again little, has enough discharge to satisfy production, consequently can lead to box anterior segment pressure to rise, can't unify the velocity of flow of carrying the thick liquids pipeline moreover, makes the thick liquids speed of flowing through the diffuser inconsistent, is unfavorable for the outward appearance and the degree of consistency of product.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the felt wire diffuser which has a simple structure and is easy to adjust the flow rate of slurry and has uniform flow distribution.

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

the utility model provides a uniform flow distribution's felt line 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, install ultrasonic flow instrument through the U-shaped snap ring on the thick liquid branch pipe, ultrasonic flow instrument is fixed to be set up on the U-shaped snap ring, be equipped with the mixing tank 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 circular hole of taking the tapering, the exit end of ladder diffuser is taking 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 mixing tank, 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, the end parts of the two side walls of the U-shaped clamping ring are provided with elastic blocks, and the elastic blocks can be directly clamped on the pipeline of the pulp inlet branch pipe.

Preferably, the bottom circular arc of the U-shaped clamping ring is matched with the outer diameter of the pulp inlet branch pipe.

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 meter is arranged on the pipeline of the pulp inlet branch pipe through the U-shaped clamping ring, an operator can hold the ultrasonic flow meter by hand and directly clamp the ultrasonic flow meter on the pipeline of one of the pulp inlet branch pipes to detect the pulp speed, and after the detection is finished, the ultrasonic flow meter can be taken down for detection of other pulp inlet branch pipes, so that the cost is reduced, and the ultrasonic flow meter is very convenient to use;

(3) The ultrasonic flow meter can accurately measure the flow velocity of each pulp inlet branch pipe, so that the pulp quantity conveyed into the mixing tank by each pulp inlet branch pipe is controlled to be the same, and the quantitative distribution of the paper in the transverse direction is more uniform after the pulp is uniformly mixed by the mixing tank;

(4) 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;

FIG. 6 is a schematic diagram of an ultrasonic flow meter clamped on a slurry inlet branch pipe through a U-shaped clamping ring;

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. a U-shaped clasp; 14. and a display screen.

Detailed Description

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

as shown in fig. 1-6, 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, the front section 2 of the box body is internally provided with a mixing tank 6, 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, an ultrasonic flow meter 9 is arranged on each pulp inlet branch pipe 5 through a U-shaped clamping ring 13, and the ultrasonic flow meter can accurately measure the flow velocity 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 in the transverse direction is more uniform after the pulp is uniformly mixed by the mixing tank; wherein, a display screen 14 is arranged on the meter body of the ultrasonic flow meter 9, which is convenient for operators to check the flow velocity of the slurry in the slurry inlet branch pipe 5.

The ultrasonic flow meter 9 is fixedly arranged on the U-shaped clamping ring 13, the circular arc at the bottom of the U-shaped clamping ring 13 is matched with the outer diameter of the pulp inlet branch pipe 5, the end parts of the two side walls of the U-shaped clamping ring 13 are provided with the elastic blocks, the elastic blocks can be directly clamped on the pipelines of the pulp inlet branch pipe 5, when in use, an operator can hold the ultrasonic flow meter 9 by hand and directly clamp the ultrasonic flow meter 9 on one of the pipelines of the pulp inlet branch pipe 5 for pulp speed detection, and after the detection is finished, the ultrasonic flow meter 9 can be taken down for detection of other pulp inlet branch pipes 5, so that the cost is reduced, and the maintenance work of the ultrasonic flow meter 9 in the later period is facilitated.

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 in use, an operator firstly turns the valves 10 on the pipelines of all the pulp inlet branch pipes 5 away for the same number of turns according to experience, then clamps the ultrasonic flow meter 9 on the first pulp inlet branch pipe 5 on the left through the U-shaped clamping ring 13 according to the arrangement sequence of the pulp inlet branch pipes 5 from left to right for pulp speed detection, adjusts the valves 10 in a matching way, and confirms whether the flow speed of the pulp inlet branch pipe 5 in the detection reaches a preset value through the display screen 14;

after the flow rate is regulated to a preset value, an operator takes down the ultrasonic flow meter 9 from the measured pulp inlet branch pipe 5, sequentially measures the flow rate of pulp of the residual pulp inlet branch pipe 5, ensures that the pulp quantity conveyed into the mixing tank 6 by each pulp inlet branch pipe 5 is the same, and after being uniformly mixed by the mixing tank, the pulp slowly and uniformly flows into the pulp discharging plate 8 through the step diffuser 7, 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 the product production.

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

Claims (8)

1. The utility model provides a felt line diffuser that flow distribution is even, characterized by includes box (1), box (1) are including opening end to terminal box anterior segment (2), box middle section (3) and box back end (4), the bottom of box anterior segment (2) is equipped with a plurality of and advances thick liquid branch pipe (5), install supersound flow meter (9) through U-shaped snap ring (13) on advancing thick liquid branch pipe (5), supersound flow meter (9) are fixed to be set up on U-shaped snap ring (13), be equipped with mixing tank (6) in box anterior segment (2), be equipped with a plurality of ladder diffuser (7) in box middle section (3), the entrance point of ladder diffuser (7) is the circular hole of area tapering, the exit end of ladder diffuser (7) is the square hole of area tapering, be equipped with in box back end (4) and be the thick liquid board (8) of arc structure, the exit end of advancing thick liquid branch pipe (5) with mixing tank (6) is fixed to be set up on U-shaped snap ring (13), be equipped with in the entrance point of ladder diffuser (7) is equipped with exit end (8) of ladder diffuser (7) and exit end (8) are located on the both sides of baffle (8).

2. The felt wire diffuser with uniform flow distribution according to claim 1, characterized in that the two side wall ends of the U-shaped clamping ring (13) are provided with elastic blocks which can be directly clamped on the pipeline of the pulp inlet branch pipe (5).

3. The felt wire diffuser with uniform flow distribution according to claim 2, characterized in that the bottom arc of the U-shaped snap ring (13) matches the outer diameter of the pulp inlet branch pipe (5).

4. The felt wire diffuser with uniform flow distribution according to claim 1, characterized in that a display screen (14) is arranged on the surface of the ultrasonic flow meter (9).

5. The felt wire diffuser with uniform flow distribution according to claim 1, characterized in that a valve (10) is installed on the pipeline of each of the slurry inlet branch pipes (5).

6. A uniformly distributed flow felt wire diffuser according to claim 1, characterized in that the spacing between adjacent slurry inlet branches (5) is set to 40-45mm.

7. The felt wire diffuser with uniform flow distribution 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).

8. The evenly distributed flow felt wire diffuser of claim 1, wherein the baffle (12) is a stainless steel plate having high elasticity.