Air flotation machine for papermaking

Abstract

The utility model discloses an air flotation machine for papermaking, which relates to the technical field of papermaking machinery and comprises a box body, a communicating valve is fixedly arranged at the lower part of one side of the box body, an opening is arranged at one end of the upper side of the box body, a scum opening is arranged at the lower side of the opening, a bubble generating mechanism is arranged in the box body, and a scum mechanism is arranged in the box body. According to the utility model, the air pump is matched with the connecting pipe and the nozzles of the group of vent pipes to inject bubbles into the paper pulp in the box body from bottom to top, and the group of vent pipes rotate to inject the bubbles into the paper pulp under the action of the motor, so that the bubbles are more uniformly dispersed in the paper pulp, scum in the paper pulp is more thoroughly cleaned, and the quality of the paper pulp is improved; the position of the arc-shaped door is adjusted according to the pouring height of the paper pulp, the scum floats on the upper side of the paper pulp, the scum is pulled out through the scum opening in the upper side of the arc-shaped door through the group of arc-shaped pulling plates, and the scum with different heights can be conveniently treated layer by layer.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking machinery, in particular to an air flotation machine for papermaking. Background Art

[0002] Papermaking equipment is a joint equipment for papermaking, mainly composed of mesh, pressing and drying parts. The mesh part is divided into two types: round mesh and fourdrinier mesh. The pressing part is composed of pressing rollers and papermaking felt, and the drying part is composed of one or more drying cylinders. Some fourdrinier mesh machines are also equipped with mechanical calenders to improve the smoothness and tightness of the paper. There are many types of papermaking equipment, such as single-cylinder paper machines for making single-sided glossy paper, fourdrinier mesh multi-cylinder paper machines for making general paper, thin paper machines for making typing paper and cigarette paper, and paperboard machines for making paperboard.

[0003] The flotation machine is one of the important mechanical equipment in the papermaking process. The flotation machine can remove the scum in the pulp. However, the existing flotation machine still has certain shortcomings in structural design. The bubble dispersion effect in the existing flotation machine is poor, and the fine bubbles generated are not enough to clean out all the scum in the pulp, resulting in a lot of impurities in the pulp after filtration, which seriously affects the quality of the finished paper. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes an air flotation machine for papermaking, which includes a box body, a connecting valve is fixed at the lower part of one side of the box body, an opening is provided at one end of the upper side of the box body, a scum opening is provided at the lower side of the opening, a bubble generating mechanism is installed in the box body, and a scum mechanism is installed in the box body;

[0005] The bubble generating mechanism comprises an air pump, a rotary joint, a pair of gears, a motor, a U-shaped plate, a spline shaft, a connecting pipe and a set of ventilation pipes;

[0006] One end of the upper side of the box is fixedly connected to the U-shaped plate and the air pump, the motor is placed on the upper side of the U-shaped plate, the output end of the motor passes through the U-shaped plate and is fixedly connected to one of the gears, a pair of the gears are meshed with each other, the central shaft bearing of the other gear is connected and passes through the box, the lower end of the other gear is fixedly connected to the spline shaft, the lower end of the connecting pipe of the air pump is fixedly connected to the upper end of the rotary joint, the lower end of the rotary joint is fixedly connected to another gear, the upper end of the connecting pipe passes through the spline shaft and the other gear and is fixedly connected to the lower end of the rotary joint, the lower end of the connecting pipe is fixedly connected to a group of evenly arranged ventilation pipes, and the upper sides of a group of ventilation pipes are respectively fixedly connected to a corresponding group of evenly arranged nozzles.

[0007] The utility model is further configured as follows: the scum mechanism comprises a pair of electric push rods, a pair of L-shaped rods, an arc-shaped door, a lifting plate, a spline sleeve and a group of arc-shaped levers;

[0008] The upper side of the box body is fixedly connected to the symmetrical electric push rods, a pair of output ends of the electric push rods pass through the box body and are fixedly connected to the upper side of the lifting plate, the upper end bearing of the spline sleeve is connected to the middle part of the lifting plate, the lower end of the spline shaft passes through the spline sleeve, and the lower outer side of the spline sleeve is fixedly connected to a group of evenly arranged arc-shaped levers, the upper side of the lifting plate is fixedly connected to the symmetrical L-shaped rods, and the lower ends of the vertical rods of a pair of L-shaped rods are respectively fixedly connected to the upper ends of the arc doors, the arc doors fit the inner wall of the box body, and the width of the arc doors matches the width of the slag opening.

[0009] The utility model is further configured as follows: a pair of L-shaped plates are fixedly connected to the inner wall of the box body, the pair of L-shaped plates are located on both sides of the scum opening, and the two ends of the arc-shaped door are respectively slidably arranged in the corresponding sliding grooves formed by the L-shaped plates and the box body.

[0010] The utility model is further configured as follows: a group of the arc-shaped shifters are located below the lifting plate, and a group of the arc-shaped shifting rods are higher than the upper side of the arc-shaped door.

[0011] The utility model is further configured as follows: a group of ventilation pipes are located at the bottom of the box body.

[0012] The utility model is further configured as follows: the motor is a slow-speed motor.

[0013] The utility model is further configured as follows: the spline shaft and the spline sleeve match each other.

[0014] The beneficial technical effect of the utility model is as follows: the utility model injects bubbles into the pulp in the box from bottom to top through an air pump, a connecting pipe and a group of ventilation pipe nozzles; under the action of a motor, a group of ventilation pipes rotate to inject bubbles into the pulp, so that the bubbles are more evenly dispersed in the pulp, and the scum in the pulp is cleaned more thoroughly, thereby improving the quality of the pulp; the position of the arc door is adjusted according to the height of the pulp poured in, and the scum floats on the upper side of the pulp, and the scum is pushed out through the scum opening on the upper side of the arc door by a group of arc-shaped prying plates, so that the scum at different heights can be processed layer by layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of the utility model is shown.

[0016] Figure 2 The figure shows a three-dimensional structural schematic diagram of the box body 4 of the present invention after being cut.

[0017] Figure 3A partial structural schematic diagram of the utility model is shown.

[0018] Figure numerals 1, electric push rod, 2, motor, 3, spline shaft, 4, box body, 5, L-shaped rod, 6, L-shaped plate, 7, lifting plate, 8, rotary joint, 9, connecting pipe, 10, ventilation pipe, 11, arc-shaped lever, 12, arc-shaped door, 13, spline sleeve, 14, gear, 15, air pump. DETAILED DESCRIPTION

[0019] Please refer to the attached Figure 1-Figure 3 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0020] The utility model proposes an air flotation machine for papermaking. Before use, the arc door 12 is located at the highest position, and the output ends of a group of electric push rods 1 are all in a contracted state. When using the device, pulp is poured into the box body 4, and the air pump 15 and the motor 2 are started. The air pump 15 pumps gas into a group of ventilation pipes 10 through a rotary joint 8 and a connecting pipe 9. The gas in the group of ventilation pipes 10 is sprayed out through a corresponding group of nozzles to generate a large number of bubbles. The motor 2 drives the corresponding gear 14 to rotate, and one gear 14 drives another gear 14 meshing therewith to rotate, and the other gear 14 drives the lower end of the rotary joint 8, the spline shaft 3 and the connecting pipe 9 to rotate. The spline shaft 3 drives a group of arc levers 11 to rotate with the spline shaft 3 as the center of the circle through the spline sleeve 13, and the connecting pipe 9 drives a group of ventilation pipes 10 to rotate with the connecting pipe 9 as the center of the circle. The group of ventilation pipes 10 drives a corresponding group of nozzles to rotate to inject bubbles into the pulp, so that the bubbles are more evenly dispersed in the pulp. When the first layer of scum is generated After that, a pair of electric push rods 1 are started, and the output ends of the pair of electric push rods 1 extend out to drive the lifting plate 7 to slide downward, and the lifting plate 7 drives the spline sleeve 13 to slide downward along the spline shaft 3, and the lifting plate 7 drives the arc door 12 to slide downward along the corresponding L-shaped plate 6 through a pair of L-shaped rods 5. When the arc door 12 drops to a suitable position (the junction of scum and pulp), a group of arc levers 11 rotate to push out the top layer of scum through the scum mouth. When there is still scum after one layer of scum is cleaned, the arc door 12 continues to drop, and the next layer of scum is cleaned by the arc lever 11. By analogy, the scum is cleaned layer by layer until the top layer of pulp no longer produces scum, and the motor 2 and the air pump 15 are turned off. At this time, the impurities in the pulp are cleaned, and the valve is opened to take out the cleaned pulp. The device injects bubbles into the pulp through a group of nozzles, so that the bubbles are more evenly dispersed in the pulp, which promotes the subsequent cleaning of scum in the pulp to be more thorough, thereby improving the quality of the pulp.

[0021] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0022] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0025] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A papermaking air flotation machine, comprising a housing (4), characterized in that: A connecting valve is fixed at the lower part of one side of the box body (4), an opening is provided at one end of the upper side of the box body (4), a scum opening is provided at the lower side of the opening, a bubble generating mechanism is installed in the box body (4), and a scum mechanism is installed in the box body (4); The bubble generating mechanism comprises an air pump (15), a rotary joint (8), a pair of gears (14), a motor (2), a U-shaped plate, a spline shaft (3), a connecting pipe (9) and a set of ventilation pipes (10); One end of the upper side of the box body (4) is fixedly connected to the U-shaped plate and the air pump (15); the motor (2) is arranged on the upper side of the U-shaped plate; the output end of the motor (2) passes through the U-shaped plate and is fixedly connected to one of the gears (14); a pair of the gears (14) are meshed with each other; the central axis bearing of the other gear (14) is connected and passes through the box body (4); the lower end of the other gear (14) is fixedly connected to the spline shaft (3); the lower end of the connecting pipe of the air pump (15) is fixedly connected to the upper end of the rotary joint (8); the lower end of the rotary joint (8) is fixedly connected to the other gear (14); the upper end of the connecting pipe (9) passes through the spline shaft (3) and the other gear (14) and is fixedly connected to the lower end of the rotary joint (8); the lower end of the connecting pipe (9) is fixedly connected to a group of evenly arranged ventilation pipes (10); the upper sides of a group of ventilation pipes (10) are respectively fixedly connected to a corresponding group of evenly arranged nozzles.

2. The air flotation machine for papermaking according to claim 1, characterized in that: The scum mechanism comprises a pair of electric push rods (1), a pair of L-shaped rods (5), an arc-shaped door (12), a lifting plate (7), a spline sleeve (13) and a group of arc-shaped shifting rods (11); The upper side of the box body (4) is fixedly connected to the symmetrical electric push rods (1); the output ends of a pair of the electric push rods (1) pass through the box body (4) and are fixedly connected to the upper side of the lifting plate (7); the upper end bearing of the spline sleeve (13) is connected to the middle part of the lifting plate (7); the lower end of the spline shaft (3) passes through the spline sleeve (13); the lower outer side of the spline sleeve (13) is fixedly connected to a group of evenly arranged arc-shaped shifting rods (11); the upper side of the lifting plate (7) is fixedly connected to the symmetrical L-shaped rods (5); the lower ends of the vertical rods of a pair of the L-shaped rods (5) are respectively fixedly connected to the upper ends of the arc-shaped doors (12); the arc-shaped doors (12) fit the inner wall of the box body (4); and the width of the arc-shaped doors (12) matches the width of the slag opening.

3. The air flotation machine for papermaking according to claim 2, characterized in that: A pair of L-shaped plates (6) are fixedly connected to the inner wall of the box body (4), and the pair of L-shaped plates (6) are located on both sides of the scum opening. The two ends of the arc-shaped door (12) are respectively slidably arranged in the corresponding sliding grooves formed by the L-shaped plates (6) and the box body (4).

4. The air flotation machine for papermaking according to claim 3, characterized in that: A group of the arc-shaped levers (11) are located below the lifting plate (7), and a group of the arc-shaped levers (11) are higher than the upper side of the arc-shaped door (12).

5. The air flotation machine for papermaking according to claim 1, characterized in that: A group of ventilation pipes (10) is located at the bottom of the box body (4).

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