A pulp water equalization device in a papermaking headbox

Abstract

This utility model discloses a pulp equalization device in a papermaking headbox, relating to the field of papermaking headbox technology. It includes an equalization frame, with a feed inlet at one end of the upper surface of the equalization frame. A first agitation unit extending into the inner cavity of the equalization frame is installed at the top of the equalization frame, and a second agitation unit extending into the inner cavity of the equalization frame is installed on one outer wall of the equalization frame. A discharge unit is installed at the bottom of the equalization frame. The first and second agitation units agitate the papermaking pulp, and the discharge unit discharges the pulp. In use, an appropriate amount of papermaking pulp is first poured into the inner cavity of the equalization frame through the feed inlet. Activating the first and second agitation units agitates the pulp, minimizing sedimentation and flocculation, resulting in paper with uniform thickness.

Description

Technical Field

[0001] This utility model relates to the technical field of papermaking headboxes, and in particular to a pulp and water equalization device in a papermaking headbox. Background Technology

[0002] The headbox is a key component of modern paper machines. Its structure and performance play a decisive role in the formation of the paper sheet and the quality of the paper. Existing headboxes have the function of making the pulp flow more evenly, which can effectively improve the strength of the paper sheet.

[0003] Because pulp contains a large amount of fiber, these fibers are prone to sedimentation and flocculation. When a large amount of sediment and flocculents appear in the pulp, the discharged pulp can easily lead to uneven thickness in the produced paper sheets, thus affecting the quality of paper production. To address this issue, this invention proposes a pulp equalization device in the papermaking headbox that differs from existing technologies. Utility Model Content

[0004] In order to improve the problem mentioned above that fibers in the pulp water are prone to sedimentation and flocculation, which can easily lead to uneven thickness of the produced paper sheets, this utility model provides a pulp water equalization device in the papermaking headbox.

[0005] This utility model provides a pulp and water equalization device in a papermaking headbox, which adopts the following technical solution: A pulp equalization device in a papermaking headbox includes an equalization frame, an inlet is provided at one end of the upper surface of the equalization frame, a first stirring unit extending into the inner cavity of the equalization frame is installed at the top of the equalization frame, a second stirring unit extending into the inner cavity of the equalization frame is installed on one side of the outer wall of the equalization frame, and a discharge unit is installed at the bottom of the equalization frame. The paper pulp can be agitated by the first agitation unit and the second agitation unit, and the paper pulp can be discharged by the discharge unit.

[0006] By adopting the above technical solution, an appropriate amount of papermaking pulp is poured into the inner cavity of the equalization frame through the feed inlet. The first agitation unit and the second agitation unit can be started to agitate the papermaking pulp, which can minimize the occurrence of sedimentation and flocculation of the papermaking pulp.

[0007] Optionally, the first stirring unit includes a drive motor, which is fixed on the top wall of the equalizing frame. The output end of the drive motor is equipped with a rotating shaft that extends into the inner cavity of the equalizing frame, and multiple sets of blades are installed at the bottom end of the outer wall of the rotating shaft.

[0008] Optionally, the second stirring unit includes a suction frame, which is fixed at the top of the outer wall of the equalizing frame. A second cylinder is installed at the bottom of the suction frame. The output shaft of the second cylinder extends to the inner cavity of the suction frame and is fixed with a rubber plug. A suction tube extending to the bottom of the inner cavity of the equalizing frame is installed at the top of the outer wall of one side of the suction frame.

[0009] By adopting the above technical solution, the drive motor is started to drive the rotating shaft and the paddle to rotate fully. The second cylinder is periodically activated to extend and retract, which can drive the rubber stopper to move up and down and use the suction tube to automatically draw out and spray out the paper pulp water. This can further agitate the paper pulp water and minimize the occurrence of sedimentation and flocculation.

[0010] Optionally, the discharge unit includes a first discharge pipe, which is fixed at the bottom of the equal distribution frame, and a second discharge pipe is threaded onto the outer wall of the first discharge pipe.

[0011] Optionally, multiple sets of support legs are installed at the outer edge of the bottom wall of the evenly divided frame, and a horizontal plate is installed at the bottom end of the multiple sets of support legs. A vertical plate is provided below the horizontal plate, and a first cylinder is installed on the vertical plate. The top end of the output shaft of the first cylinder is fixed to the bottom wall of the horizontal plate.

[0012] By adopting the above technical solution, the first cylinder can be activated to extend and retract, thereby driving the horizontal plate, support leg, even distribution frame, first material pipe and second material pipe to move up and down synchronously to an appropriate height. Then, the second material pipe can be rotated by screwing it to facilitate the adjustment of the position of the second material pipe.

[0013] Optionally, multiple sets of counterweights are installed on the upright plate to increase its weight.

[0014] By adopting the above technical solution, the center of gravity height of the pulp and water equalization device in the papermaking headbox can be reduced under the action of the counterweight.

[0015] Optionally, a vertical slide is installed at the top of the outer wall on one side of the upright plate, and a sliding plate fixed to the outer wall of the dividing frame is provided in the inner cavity of the vertical slide.

[0016] By adopting the above technical solution, when the dividing frame moves up and down, it can drive the slide plate to move up and down synchronously in the inner cavity of the vertical slide, thereby restricting the movement path of the dividing frame.

[0017] In summary, this utility model has at least one of the following beneficial effects: This invention uses a drive motor to rotate the shaft and paddles, periodically activates the extension and retraction of the second cylinder, and automatically extracts and sprays out paper pulp water using a rubber stopper and suction tube. This further agitates the paper pulp water, minimizing sedimentation and flocculation, and resulting in paper with uniform thickness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front sectional view of the present invention; Figure 2 This is a top sectional view of the structure of this utility model.

[0019] In the diagram: 1. Vertical slide; 2. Slide plate; 3. Paddle; 4. Rotating shaft; 5. Horizontal plate; 6. Vertical plate; 7. Counterweight; 8. First cylinder; 9. First discharge pipe; 10. Support leg; 11. Second discharge pipe; 12. Second cylinder; 13. Suction pipe; 14. Rubber stopper; 15. Suction frame; 16. Dividing frame; 17. Drive motor; 18. Feed inlet. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0021] Example 1: This example provides a pulp and water equalization device in a papermaking headbox, such as... Figure 1 and Figure 2 As shown, this invention can solve the problem of fiber sedimentation and flocculation in the pulp water, which can easily lead to uneven paper thickness. It includes a dividing frame 16, with a feed inlet 18 at one end of the upper surface of the dividing frame 16. A first stirring unit is installed at the top of the dividing frame 16. The first stirring unit includes a drive motor 17, which is fixed at the center of the top wall of the dividing frame 16. A rotating shaft 4 extending into the inner cavity of the dividing frame 16 is installed at the output end of the drive motor 17. Multiple sets of paddles 3 are installed at the bottom of the outer wall of the rotating shaft 4. A second stirring unit is installed on one side of the outer wall of the dividing frame 16. The second stirring unit includes a suction frame 15.

[0022] Combination Figure 1 and Figure 2 In an embodiment of this utility model, the suction frame 15 is fixed at the top of the outer wall of the equal distribution frame 16, the suction frame 15 and the equal distribution frame 16 partially overlap, and the upper surface of the suction frame 15 is positioned above the upper surface of the equal distribution frame 16. A second cylinder 12 is installed at the bottom of the suction frame 15, and the output shaft end of the second cylinder 12 extends to the inner cavity of the suction frame 15 and is fixed with a rubber plug 14. The cross-sectional dimension of the rubber plug 14 is equal to the cross-sectional dimension of the inner cavity of the suction frame 15. A suction tube 13 extending to the bottom of the inner cavity of the equal distribution frame 16 is installed at the top of the outer wall of one side of the suction frame 15.

[0023] The drive motor 17 is started to drive the rotating shaft 4 to rotate, which in turn drives multiple sets of paddles 3 to rotate fully. Under the action of multiple sets of paddles 3, the paper pulp can be agitated. The second cylinder 12 is periodically activated to extend and retract, which drives the rubber stopper 14 to move up and down synchronously in the inner cavity of the suction frame 15. During the movement of the rubber stopper 14, the suction pipe 13 can automatically draw out and spray out the paper pulp, which can further agitate the paper pulp and minimize the occurrence of sedimentation and flocculation in the paper pulp.

[0024] Combination Figure 1 and Figure 2 In an embodiment of this utility model, the discharge unit includes a first discharge pipe 9, which is fixed at the bottom of the equal distribution frame 16. A control valve is installed at the top of the first discharge pipe 9. A second discharge pipe 11 is threaded on the outer wall of the first discharge pipe 9. An internal thread is provided on the inner wall of the second discharge pipe 11 near the first discharge pipe 9. The outer wall of the first discharge pipe 9 is uniformly provided with external threads that match the second discharge pipe 11.

[0025] Combination Figure 1 and Figure 2 In an embodiment of this utility model, multiple sets of support legs 10 are installed at the outer edge of the bottom wall of the evenly divided frame 16. A horizontal plate 5 is installed at the bottom of the multiple sets of support legs 10. A vertical plate 6 is provided below the horizontal plate 5. A first cylinder 8 is installed on the vertical plate 6. The top end of the output shaft of the first cylinder 8 is fixed to the bottom wall of the horizontal plate 5.

[0026] Activating the first cylinder 8 extends and retracts, thereby driving the horizontal plate 5, support leg 10, evenly dividing frame 16, first discharge pipe 9 and second discharge pipe 11 to move up and down synchronously to an appropriate height. Then, the second discharge pipe 11 is rotated to adjust the position of the first discharge pipe 9 and the second discharge pipe 11.

[0027] Combination Figure 1 In this embodiment of the invention, multiple sets of counterweights 7 are installed on the upright plate 6 to increase the weight of the upright plate 6. The counterweights 7 are reinforced concrete blocks. Under the action of the counterweights 7, the center of gravity of the pulp distribution device in the papermaking headbox can be lowered, thereby improving stability.

[0028] Combination Figure 1 and Figure 2 In this embodiment of the invention, a vertical slide rail 1 is installed at the top of the outer wall of one side of the upright plate 6. A sliding plate 2, which is fixed to the outer wall of the dividing frame 16, is provided in the inner cavity of the vertical slide rail 1. The cross-section of the sliding plate 2 is T-shaped. When the dividing frame 16 moves up and down, it can drive the sliding plate 2 to move up and down synchronously in the inner cavity of the vertical slide rail 1, thereby restricting the movement path of the dividing frame 16.

[0029] Working principle: When using the pulp equalization device in the papermaking headbox, an appropriate amount of papermaking pulp is poured into the inner cavity of the equalization frame 16 through the feed inlet 18. The drive motor 17 is started to drive the rotating shaft 4 to rotate, which in turn drives multiple sets of paddles 3 to rotate fully. Under the action of multiple sets of paddles 3, the papermaking pulp can be agitated. The second cylinder 12 is periodically activated to extend and retract, which drives the rubber stopper 14 to move up and down synchronously in the inner cavity of the suction frame 15. During the movement of the rubber stopper 14, the suction pipe 13 can automatically draw and spray out the papermaking pulp, which can further agitate the papermaking pulp and minimize the occurrence of sedimentation and flocculation of the papermaking pulp.

[0030] Opening the control valve on the first discharge pipe 9 allows the pulp in the inner cavity of the equalizing frame 16 to be discharged through the first discharge pipe 9 and the second discharge pipe 11. Activating the extension and retraction of the first cylinder 8 can drive the horizontal plate 5, support leg 10, equalizing frame 16, first discharge pipe 9, and second discharge pipe 11 to move up and down synchronously to an appropriate height. Then, the second discharge pipe 11 is screwed to rotate on the outer wall of the first discharge pipe 9, thereby adjusting the overlapping dimensions of the first discharge pipe 9 and the second discharge pipe 11, facilitating the adjustment of the position of the second discharge pipe 11, and thus making it suitable for papermaking equipment of different heights and distances.

[0031] When the equalizing frame 16 moves up and down, it can drive the slide plate 2 to move up and down synchronously in the inner cavity of the vertical slide 1, thereby restricting the movement path of the equalizing frame 16. Under the action of the counterweight 7, the center of gravity height of the pulp equalizing device in the papermaking headbox can be reduced, the lower load of the pulp equalizing device in the papermaking headbox can be increased, and the stability can be improved.

[0032] All standard parts used in this utility model document can be purchased from the market. Each component in this utility model document can be customized according to the description and drawings. The specific connection methods of each component adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0033] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A pulp water equalizing device in a papermaking headbox, comprising an equalizing frame (16), characterized in that: A feed inlet (18) is provided at one end of the upper surface of the equal distribution frame (16). A first stirring unit extending into the inner cavity of the equal distribution frame (16) is installed at the top of the equal distribution frame (16). A second stirring unit extending into the inner cavity of the equal distribution frame (16) is installed on one side of the outer wall of the equal distribution frame (16). A discharge unit is installed at the bottom of the equal distribution frame (16). The paper pulp can be agitated by the first agitation unit and the second agitation unit, and the paper pulp can be discharged by the discharge unit.

2. A device for dividing the water content of the pulp in a headbox of a paper machine according to claim 1, characterized in that The first agitation unit includes a drive motor (17), which is fixed on the top wall of the equalization frame (16). The output end of the drive motor (17) is equipped with a rotating shaft (4) extending into the cavity of the equalization frame (16). Multiple sets of paddles (3) are installed at the bottom of the outer wall of the rotating shaft (4). The multiple sets of paddles (3) are used to agitate the paper pulp in the cavity of the equalization frame (16).

3. The pulp and water equalization device in a papermaking headbox according to claim 1, characterized in that: The second stirring unit includes a suction frame (15), which is fixed at the top of the outer wall of the equalizing frame (16). A second cylinder (12) is installed at the bottom of the suction frame (15). The output shaft end of the second cylinder (12) extends into the inner cavity of the suction frame (15) and is fixed with a rubber plug (14). A suction tube (13) extending to the bottom of the inner cavity of the equalizing frame (16) is installed at the top of the outer wall of one side of the suction frame (15). The paper pulp water in the inner cavity of the equalizing frame (16) is stirred by the suction tube (13).

4. The pulp and water equalization device in a papermaking headbox according to claim 1, characterized in that: The discharge unit includes a first discharge pipe (9), which is fixed at the bottom of the equal distribution frame (16). The outer wall of the first discharge pipe (9) is threaded with a second discharge pipe (11), and the paper pulp water is discharged by the first discharge pipe (9) and the second discharge pipe (11).

5. The pulp and water equalization device in a papermaking headbox according to claim 1, characterized in that: Multiple sets of support legs (10) are installed at the outer edge of the bottom wall of the equal distribution frame (16). A horizontal plate (5) is installed at the bottom end of the multiple sets of support legs (10). A vertical plate (6) is provided below the horizontal plate (5). A first cylinder (8) is installed on the vertical plate (6). The top end of the output shaft of the first cylinder (8) is fixed to the bottom wall of the horizontal plate (5) for adjusting the height of the equal distribution frame (16).

6. The pulp and water equalization device in a papermaking headbox according to claim 5, characterized in that: Multiple sets of counterweights (7) are installed on the upright plate (6) to increase the weight of the upright plate (6).

7. A pulp and water equalization device in a papermaking headbox according to claim 5, characterized in that: A vertical slide (1) is installed on the top of the outer wall of one side of the upright plate (6). The inner cavity of the vertical slide (1) is provided with a sliding plate (2) that is fixed to the outer wall of the dividing frame (16) to restrict the movement path of the dividing frame (16).

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