Paper pulp defoaming device

Abstract

The utility model discloses a paper pulp defoaming device which comprises a defoaming tank, a rotating shaft is arranged in the defoaming tank, a stirring piece is arranged on the rotating shaft, a plurality of defoaming blades are arranged at the lower end of the stirring piece, a sealing cover door is arranged at the upper end of the defoaming tank, a discharging pipe is arranged at the lower end of the defoaming tank, a negative pressure pipe is connected to the side wall of the defoaming tank, and the negative pressure pipe is located above the stirring piece. And a bubble puncturing piece is arranged between the rotating shaft and the negative pressure pipe in the defoaming tank. The bubble removing device has the advantages that under the combined action of the stirring piece, the bubble removing blade, the negative pressure pipe and the bubble puncturing piece, it is guaranteed that bubbles in paper pulp can be effectively removed, and the bubble removing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp processing, in particular to a pulp defoaming device. Background Art

[0002] Pulp is a fibrous material made from plant fibers through different processing methods, and is generally used to make paper and paperboard. During pulp processing, a large number of bubbles will be generated. In order to ensure the quality of pulp, the bubbles need to be removed. The current defoaming equipment is difficult to remove the bubbles completely during use, and the defoaming operation needs to be repeated many times, which is inefficient and difficult to meet processing needs. Utility Model Content

[0003] The utility model aims to provide a pulp defoaming device to solve the problem that the existing defoaming device is difficult to completely remove bubbles when in use, requires repeated operations, and affects processing efficiency.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A pulp defoaming device comprises a defoaming tank, wherein a rotating shaft is arranged in the defoaming tank, a stirring member is arranged on the rotating shaft, a plurality of defoaming blades are arranged at the lower end of the stirring member, a sealing cover door is arranged at the upper end of the defoaming tank, a discharge pipe is arranged at the lower end of the defoaming tank, a negative pressure pipe is connected to the side wall of the defoaming tank, the negative pressure pipe is located above the stirring member, and a bubble puncturing member is arranged in the defoaming tank between the rotating shaft and the negative pressure pipe.

[0006] Furthermore, the stirring element includes a connecting block and a stirring blade. The stirring blade is a thin sheet structure that is wide in the middle and narrow on both sides. The connecting block is provided at the center of the end surface of the stirring blade. The other end of the connecting block is connected to the rotating shaft. The defoaming blade is provided on the lower end surface of the stirring blade.

[0007] Furthermore, the bubble puncturing component includes a floating plate, which is located between the rotating shaft and the negative pressure tube, and a plurality of conical protrusions are provided at the lower end of the floating plate. A driving cylinder is provided at the upper end of the defoaming tank, and the lower end of the driving cylinder is hinged to the upper end of the floating plate.

[0008] Furthermore, the bubble piercing component also includes a limiting rod, the upper end of which is connected to the inner top wall of the defoaming tank, and the floating plate is provided with a limiting slot hole adapted to the limiting rod, the size of the limiting slot hole is larger than the size of the limiting rod, and the limiting slot hole is located on the connecting line between the rotating shaft and the negative pressure tube.

[0009] Furthermore, the side wall of the defoaming tank is provided with an observation window adapted to the floating plate.

[0010] Furthermore, a reduction motor for driving the rotating shaft is provided at the upper end of the defoaming tank, and a plurality of supporting legs are provided at the lower end of the defoaming tank.

[0011] The utility model has the following advantages:

[0012] Under the joint action of the stirring element, defoaming blade, negative pressure tube and bubble puncturing element, the bubbles in the pulp can be effectively removed, thereby improving the bubble removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the side structure of the stirring element.

[0015] In the figure, 1-defoaming tank, 2-rotating shaft, 3-defoaming blade, 4-sealing cover door, 5-discharging pipe, 6-negative pressure pipe, 7-connecting block, 8-stirring blade, 9-floating plate, 10-conical thorn, 11-driving cylinder, 12-limiting rod, 13-reduction motor, 14-supporting leg. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] refer to Figure 1 , 2, an embodiment of the utility model is:

[0023] A pulp defoaming device comprises a defoaming tank 1, wherein a rotating shaft 2 is provided in the defoaming tank 1, a stirring member is provided on the rotating shaft 2, a plurality of defoaming blades 3 are provided at the lower end of the stirring member, a sealing cover door 4 is provided at the upper end of the defoaming tank 1, a discharge pipe 5 is provided at the lower end of the defoaming tank 1, a negative pressure pipe 6 is connected to the side wall of the defoaming tank 1, the negative pressure pipe 6 is located above the stirring member, and a bubble puncturing member is provided in the defoaming tank 1 between the rotating shaft 2 and the negative pressure pipe 6.

[0024] Specifically, the stirring member includes a connecting block 7 and a stirring blade 8. The stirring blade 8 is a thin sheet structure that is wide in the middle and narrow on both sides. The connecting block 7 is provided at the center of the end surface of the stirring blade 8. The other end of the connecting block 7 is connected to the rotating shaft 2. The defoaming blade 3 is provided on the lower end surface of the stirring blade 8.

[0025] The bubble puncturing member includes a floating plate 9, which is located between the rotating shaft 2 and the negative pressure tube 6. A plurality of conical protrusions 10 are provided at the lower end of the floating plate 9. A driving cylinder 11 is provided at the upper end of the defoaming tank 1, and the lower end of the driving cylinder 11 is hinged to the upper end of the floating plate 9.

[0026] The negative pressure pipe is connected to an external negative pressure generator to make the defoaming tank in a negative pressure state, which promotes the breaking of bubbles. The stirring blade adopts a thin sheet structure that is wide in the middle and narrow on both sides to reduce the amount of bubbles generated by stirring, and the bubbles in the pulp are destroyed by the defoaming blade arranged at the lower end. The bubbles on the pulp liquid surface are quickly broken under the action of the conical thorns 10. Under the joint action of multiple defoaming components, it is ensured that the bubbles in the pulp can be effectively removed, and the bubble removal efficiency is improved.

[0027] Specifically, the floating plate 9 is a light sheet structure, which is conducive to its floating on the pulp surface, and the end of the driving cylinder 11 is hinged to the floating plate 9, so that it can be adjusted adaptively according to the invasion angle of the liquid surface. The conical spur 10 at its lower end is made of plastic material.

[0028] Furthermore, the bubble puncturing component also includes a limiting rod 12, the upper end of which is connected to the inner top wall of the defoaming tank 1, and the floating plate 9 is provided with a limiting slot hole adapted to the limiting rod 12, the size of the limiting slot hole is larger than the size of the limiting rod 12, and the limiting slot hole is located on the connecting line between the rotating shaft 2 and the negative pressure tube 6.

[0029] The limiting slot cooperates with the limiting rod 12 to provide limited guidance, so as to reduce the amplitude of the floating plate's left and right swing along the flow direction of the liquid surface while ensuring that the floating plate remains floating on the pulp surface.

[0030] Specifically, in order to facilitate the adjustment of the position of the floating plate 9 , a viewing window adapted to the floating plate 9 is provided on the side wall of the defoaming tank 1 .

[0031] A reduction motor 13 for driving the rotating shaft 2 is disposed at the upper end of the defoaming tank 1 , and a plurality of supporting legs 14 are disposed at the lower end of the defoaming tank 1 .

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulp defoaming device, characterized in that: It includes a defoaming tank, a rotating shaft is provided in the defoaming tank, a stirring piece is provided on the rotating shaft, a plurality of defoaming blades are provided at the lower end of the stirring piece, a sealing cover door is provided at the upper end of the defoaming tank, a discharge pipe is provided at the lower end of the defoaming tank, a negative pressure pipe is connected to the side wall of the defoaming tank, the negative pressure pipe is located above the stirring piece, and a bubble piercing piece is provided in the defoaming tank between the rotating shaft and the negative pressure pipe.

2. A pulp defoaming device according to claim 1, characterized in that: The stirring member includes a connecting block and a stirring blade. The stirring blade is a thin sheet structure that is wide in the middle and narrow on both sides. The connecting block is provided at the center of the end surface of the stirring blade. The other end of the connecting block is connected to the rotating shaft. The defoaming blade is provided on the lower end surface of the stirring blade.

3. A pulp defoaming device according to claim 1, characterized in that: The bubble puncturing component includes a floating plate, which is located between the rotating shaft and the negative pressure tube. The lower end of the floating plate is provided with a plurality of conical thorns. The upper end of the defoaming tank is provided with a driving cylinder, and the lower end of the driving cylinder is hinged to the upper end of the floating plate.

4. A pulp defoaming device according to claim 3, characterized in that: The bubble puncturing component also includes a limiting rod, the upper end of which is connected to the inner top wall of the defoaming tank, and the floating plate is provided with a limiting slot hole adapted to the limiting rod. The size of the limiting slot hole is larger than the size of the limiting rod, and the limiting slot hole is located on the connecting line between the rotating shaft and the negative pressure tube.

5. A pulp defoaming device according to claim 3, characterized in that: The side wall of the defoaming tank is provided with an observation window adapted to the floating plate.

6. A pulp defoaming device according to claim 1, characterized in that: A reduction motor for driving the rotating shaft is disposed at the upper end of the defoaming tank, and a plurality of supporting legs are disposed at the lower end of the defoaming tank.

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