Headbox for improving uniformity of pulp on net

Abstract

The utility model discloses a headbox for improving sizing agent feeding uniformity, belongs to the technical field of headboxes, and aims to solve the problems that lumps in sizing agents are easy to influence the sizing agent feeding uniformity and the dilution ratio of the headbox is not easy to adjust according to different sizing agents. Two fixing plates distributed in parallel are fixedly connected to the outer wall of one side of the machine body, the same adjusting assembly is arranged on the top faces of the two fixing plates, and an outlet is formed in the other side of the machine body. Slurry enters the filter pipe, a first motor drives a cutting blade to cut and scatter lumps in the slurry, a filter plate filters the slurry, the uniformity of the slurry is improved, a second motor drives a threaded rod to rotate, two pistons are made to get close to each other or get away from each other, and the uniformity of the slurry is improved. Therefore, the filling amount of the dilution water is adjusted, and the problems that lumps in the pulp easily affect the uniformity of the pulp on the net, and the dilution ratio of the headbox is not easy to adjust according to different kinds of pulp are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of headboxes, and in particular relates to a headbox for improving the evenness of slurry on the screen. Background Art

[0002] The headbox is known as the "heart" of the papermaking machine. It is a key component of the papermaking machine, a hub connecting the "flow" and "forming" parts, and one of the fastest-growing components on the papermaking machine. In papermaking, the function of the headbox is to deliver the pulp that meets the requirements to the forming wire according to the requirements of the forming part of the papermaking machine, providing the necessary prerequisite for the good forming of the paper web.

[0003] In the prior art, a new type of headbox for light paper production is disclosed with patent publication number CN219886440U. The above patent enables the headbox to remove floating foam through the cooperation of an air blowing mechanism and a foam removal mechanism, thereby reducing the unevenness of the paper in the later stage and effectively improving the qualified rate of paper production. However, in actual use, the following deficiencies still exist: when the headbox processes different types of pulp, it is not convenient to adjust the amount of dilution water to mix with the pulp, which makes it inconvenient to adjust the dilution ratio required for producing different types of paper. In addition, there are usually many lumps inside the pulp, and the lumps entering the headbox are likely to affect the uniformity of the pulp on the screen.

[0004] Therefore, a headbox is needed to improve the uniformity of the slurry on the screen, so as to solve the problems in the prior art that the lumps inside the slurry easily affect the uniformity of the slurry on the screen, and the headbox is not easy to adjust the dilution ratio according to different slurries. Utility Model Content

[0005] The purpose of the utility model is to provide a headbox for improving the uniformity of slurry on the screen, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a headbox for improving the uniformity of slurry on the screen, comprising a body, a second turbulence chamber is provided inside the body, a dilution water tank is fixedly connected to the top surface of the body, two parallel fixed plates are fixedly connected to the outer wall of one side of the body, a first turbulence chamber is fixedly connected to the bottom between the outer walls of the adjacent ends of the two fixed plates, a feed pipe is fixedly connected to the outer wall of one side of the first turbulence chamber through multiple pipes, an auxiliary mechanism is provided on the feed pipe, the top surfaces of the two fixed plates are provided with the same adjustment component, and an outlet is configured on the other side of the body;

[0007] The auxiliary mechanism includes a filter tube, which is connected to the feed pipe through a flange, a filter plate fixedly connected to the inner surface of the filter tube, a first motor fixedly connected to the top of the outer surface of the filter tube, an output end of the first motor rotates through the top of the inner surface of the filter tube and is coaxially fixedly connected to a rotating shaft, the bottom end of the rotating shaft is rotatably connected to the bottom of the inner surface of the filter tube and a plurality of evenly distributed cutting blades are fixedly connected to the outer surface.

[0008] It should be noted in the scheme that the regulating assembly includes a regulating chamber, the bottom surface of the regulating chamber is fixedly connected to the top surfaces of the two fixed plates, the outer walls at both ends of the regulating chamber are fixedly connected to the second motor, the two output ends of the second motor respectively rotate through the inner walls at both ends of the regulating chamber and are coaxially fixedly connected to a threaded rod, the outer surface of the threaded rod is threadedly connected to a threaded sleeve, and the outer wall of the threaded sleeve at one end away from the threaded rod is coaxially fixedly connected to a piston.

[0009] It is further worth explaining that two third motors distributed in parallel are fixedly connected to the outer wall of one end of the body, and two turbulence generators distributed in parallel are rotatably connected between the two end walls inside the second turbulence chamber. The output ends of the two third motors rotate through one end wall inside the second turbulence chamber and are coaxially fixedly connected to the outer walls of one end of the two turbulence generators respectively. The outer surfaces of the two turbulence generators are penetrated by a number of evenly distributed through holes.

[0010] It should be further explained that a water pump is installed on the top surface of the dilution water tank, a water supply pipe is fixedly connected between the output end of the water pump and the top of the regulating chamber, and a plurality of evenly distributed connecting pipes are fixedly connected between the top surface of the first turbulence chamber and the bottom surface of the regulating chamber.

[0011] As a preferred embodiment, the plurality of cutting blades are arranged in a structure of different lengths according to the inner diameter of the filter tube, and the outer side surface of the piston fits in with the inner side surface of the regulating chamber.

[0012] As a preferred embodiment, the second turbulence chamber is communicated with the first turbulence chamber, and the feed pipe is fixedly connected to one side outer wall of the two fixed plates through a connecting block.

[0013] Compared with the prior art, the headbox provided by the present invention improves the uniformity of slurry on the screen, which has at least the following beneficial effects:

[0014] (1) Through the action of the auxiliary mechanism, the slurry enters the filter tube, and the first motor drives the cutting blade to cut and break up the lumps inside the slurry, thereby improving the uniformity of the slurry. The slurry is filtered through the filter plate, effectively blocking the agglomerates from entering the feed pipe, ensuring the uniformity of the slurry entering the feed pipe, and effectively avoiding the problem that the lumps inside the slurry easily affect the uniformity of the slurry on the screen.

[0015] (2) Through the action of the adjustment component, the second motor drives the threaded rod to rotate, so that the threaded sleeve pushes the piston to move inside the adjustment chamber. The two pistons move closer to or away from each other, and the area of the cavity inside the adjustment chamber is adjusted, thereby adjusting the amount of dilution water injected. The operation is simple and effectively avoids the problem that the slurry box is difficult to adjust the dilution ratio according to different slurries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the side cross-sectional structure of the filter tube of the present invention;

[0018] Figure 3 This is a schematic diagram of the side cross-sectional structure of the regulating chamber of the present utility model;

[0019] Figure 4 It is a schematic diagram of the front cross-sectional structure of the machine body of the present invention.

[0020] In the figure: 1. body; 2. second turbulence chamber; 3. dilution water tank; 4. fixing plate; 5. first turbulence chamber; 6. feed pipe; 7. auxiliary mechanism; 71. filter tube; 72. filter plate; 73. first motor; 74. rotating shaft; 75. cutting blade; 8. adjusting assembly; 81. adjusting chamber; 82. second motor; 83. threaded rod; 84. threaded sleeve; 85. piston; 9. outlet; 10. third motor; 11. turbulence generator; 12. through hole; 13. water pump; 14. water supply pipe; 15. connecting pipe. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments.

[0022] See also Figure 1-Figure 4 The utility model provides a headbox for improving the uniformity of slurry on the screen, comprising a body 1, a second turbulence chamber 2 is provided inside the body 1, a dilution water tank 3 is fixedly connected to the top surface of the body 1, two parallel fixed plates 4 are fixedly connected to the outer wall of one side of the body 1, a first turbulence chamber 5 is fixedly connected to the bottom between the outer walls of the two fixed plates 4 at one end close to each other, a feed pipe 6 is fixedly connected to the outer wall of one side of the first turbulence chamber 5 through multiple pipes, an auxiliary mechanism 7 is provided on the feed pipe 6, the same adjustment component 8 is provided on the top surfaces of the two fixed plates 4, and an outlet 9 is constructed on the other side of the body 1;

[0023] The auxiliary mechanism 7 includes a filter tube 71, which is connected to the feed tube 6 through a flange. A filter plate 72 is fixedly connected to the inner surface of the filter tube 71, and a first motor 73 is fixedly connected to the top of the outer surface of the filter tube 71. The output end of the first motor 73 rotates through the top of the inner surface of the filter tube 71 and is coaxially fixedly connected to a rotating shaft 74. The bottom end of the rotating shaft 74 is rotatably connected to the bottom of the inner surface of the filter tube 71 and a plurality of evenly distributed cutting blades 75 are fixedly connected to the outer surface.

[0024] Further as Figure 1 and Figure 3 As shown, it is worth mentioning that the regulating assembly 8 includes a regulating chamber 81, the bottom surface of the regulating chamber 81 is fixedly connected to the top surfaces of the two fixed plates 4, and the outer walls at both ends of the regulating chamber 81 are fixedly connected to the second motor 82. The output ends of the two second motors 82 respectively rotate through the inner walls at both ends of the regulating chamber 81 and are coaxially fixedly connected to the threaded rod 83. The outer surface of the threaded rod 83 is threadedly connected to a threaded sleeve 84, and the outer wall of the threaded sleeve 84 away from the threaded rod 83 is coaxially fixedly connected to a piston 85.

[0025] Further as Figure 1 and Figure 4 As shown, it is worth mentioning that two third motors 10 distributed in parallel are fixedly connected to the outer wall at one end of the body 1, and two turbulence generators 11 distributed in parallel are rotatably connected between the two end walls inside the second turbulence chamber 2. The output ends of the two third motors 10 rotate through one end wall inside the second turbulence chamber 2 and are coaxially fixedly connected to the outer walls of one end of the two turbulence generators 11 respectively. The outer surfaces of the two turbulence generators 11 are penetrated by a number of evenly distributed through holes 12.

[0026] Further as Figure 1 and Figure 3 As shown, it is worth mentioning that a water pump 13 is installed on the top surface of the dilution water tank 3, and a water supply pipe 14 is fixedly connected between the output end of the water pump 13 and the top of the regulating chamber 81, and a plurality of evenly distributed connecting pipes 15 are fixedly connected between the top surface of the first turbulence chamber 5 and the bottom surface of the regulating chamber 81.

[0027] Further as Figure 2 and Figure 3 As shown, it is worth mentioning that the multiple cutting blades 75 are arranged in different lengths according to the inner diameter of the filter tube 71, which maximizes the ability of the cutting blades 75 to cut and break up the lumps inside the slurry. The outer side surface of the piston 85 fits with the inner side surface of the regulating chamber 81 to ensure the sealing between the piston 85 and the regulating chamber 81, and the amount of dilution water injected is regulated by the distance between the two pistons 85.

[0028] Further as Figure 1 and Figure 4As shown, it is worth mentioning that the second turbulence chamber 2 is connected to the first turbulence chamber 5, which facilitates the slurry mixed with the dilution water to enter the interior of the body 1, and the feed pipe 6 is fixedly connected to the outer wall of one side of the two fixed plates 4 through the connecting block, thereby improving the fixity of the connection between the feed pipe 6 and the body 1.

[0029] In summary: When the flow box is in use, the filter tube 71 is first connected to the external slurry output pipe through the flange, and the first motor 73, the third motor 10 and the water pump 13 are turned on at the same time. The first motor 73 drives the rotating shaft 74 to rotate, and then drives the cutting blade 75 to rotate inside the filter tube 71. The lumps inside the slurry flowing through the filter tube 71 are cut and broken up by multiple rotating cutting blades 75, thereby improving the uniformity of the slurry. The slurry processed by the cutting blade 75 passes through the filter plate 72 and enters the feed pipe 6. The slurry is filtered by the filter plate 72, effectively preventing the agglomerates from entering the feed pipe 6, ensuring the uniformity of the slurry entering the feed pipe 6, and effectively avoiding the problem that the lumps inside the slurry easily affect the uniformity of the slurry on the screen.

[0030] The treated slurry enters the first turbulence chamber 5. At this time, the water pump 13 pumps out the dilution water in the dilution water tank 3, passes through the water supply pipe 14, the regulating chamber 81 and the multiple connecting pipes 15 into the first turbulence chamber 5, dilutes the slurry and collides with the slurry to generate a strong initial turbulent velocity, thereby enhancing the uniformity of slurry production. The diluted slurry enters the second turbulence chamber 2. At this time, the two third motors 10 drive the two turbulence generators 11 to rotate, and generate strong turbulence to the slurry through the multiple through holes 12, so that the fibers inside the slurry are broken up, further improving the uniformity of the slurry. The processed slurry finally flows out of the headbox through the outlet 9 to form the initial shape of the paper. When the amount of dilution water needs to be adjusted according to different slurries, the two second motors 82 are turned on at the same time to drive the threaded rod 83 to rotate. Under the action of the thread, the threaded sleeve 84 pushes the piston 85 to move inside the adjustment chamber 81. The two pistons 85 move closer to or away from each other to adjust the area of the cavity inside the adjustment chamber 81, thereby realizing the adjustment of the amount of dilution water poured in. The operation is simple, and effectively avoids the problem that the headbox is difficult to adjust the dilution ratio according to different slurries.

[0031] The first motor 73, the second motor 82, the third motor 10 and the water pump 13 can be purchased on the market. The first motor 73, the second motor 82, the third motor 10 and the water pump 13 are equipped with power supplies, which are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A headbox for improving the uniformity of slurry on a screen, comprising a body (1), characterized in that: A second turbulence chamber (2) is provided inside the machine body (1), a dilution water tank (3) is fixedly connected to the top surface of the machine body (1), two parallel fixed plates (4) are fixedly connected to the outer wall of one side of the machine body (1), a first turbulence chamber (5) is fixedly connected to the bottom between the outer walls of the two adjacent ends of the fixed plates (4), a feed pipe (6) is fixedly connected to the outer wall of one side of the first turbulence chamber (5) through a plurality of pipes, an auxiliary mechanism (7) is provided on the feed pipe (6), the top surfaces of the two fixed plates (4) are provided with the same adjustment component (8), and an outlet (9) is constructed on the other side of the machine body (1); The auxiliary mechanism (7) comprises a filter tube (71), the filter tube (71) being connected to the feed tube (6) via a flange, a filter plate (72) being fixedly connected to the inner surface of the filter tube (71), a first motor (73) being fixedly connected to the top of the outer surface of the filter tube (71), an output end of the first motor (73) rotatingly passing through the top of the inner surface of the filter tube (71) and being coaxially fixedly connected to a rotating shaft (74), a bottom end of the rotating shaft (74) being rotatably connected to the bottom of the inner surface of the filter tube (71), and a plurality of evenly distributed cutting blades (75) being fixedly connected to the outer surface.

2. A headbox for improving the uniformity of slurry on the screen according to claim 1, characterized in that: The regulating assembly (8) comprises a regulating chamber (81), the bottom surface of the regulating chamber (81) is fixedly connected to the top surfaces of the two fixed plates (4), the outer walls at both ends of the regulating chamber (81) are fixedly connected to a second motor (82), the output ends of the two second motors (82) respectively rotate through the inner walls at both ends of the regulating chamber (81) and are coaxially fixedly connected to a threaded rod (83), the outer surface of the threaded rod (83) is threadedly connected to a threaded sleeve (84), and the outer wall of the threaded sleeve (84) at one end away from the threaded rod (83) is coaxially fixedly connected to a piston (85).

3. A headbox for improving the uniformity of slurry on the screen according to claim 2, characterized in that: Two third motors (10) distributed in parallel are fixedly connected to the outer wall at one end of the machine body (1); two turbulence generators (11) distributed in parallel are rotatably connected between the inner end walls of the second turbulence chamber (2); the output ends of the two third motors (10) are rotated to penetrate the inner end wall of the second turbulence chamber (2) and are coaxially fixedly connected to the outer walls of one end of the two turbulence generators (11); and the outer surfaces of the two turbulence generators (11) are penetrated by a plurality of evenly distributed through holes (12).

4. A headbox for improving the uniformity of slurry on the screen according to claim 3, characterized in that: A water pump (13) is installed on the top surface of the dilution water tank (3), and a water supply pipe (14) is fixedly connected between the output end of the water pump (13) and the top of the regulating chamber (81). A plurality of evenly distributed connecting pipes (15) are fixedly connected between the top surface of the first turbulence chamber (5) and the bottom surface of the regulating chamber (81).

5. A headbox for improving the uniformity of slurry on the screen according to claim 4, characterized in that: The plurality of cutting pieces (75) are arranged in a structure of different lengths according to the inner diameter of the filter tube (71), and the outer side surface of the piston (85) fits in contact with the inner side surface of the regulating chamber (81).

6. A headbox for improving the uniformity of slurry on the screen according to claim 1, characterized in that: The second turbulence chamber (2) is communicated with the first turbulence chamber (5), and the feed pipe (6) is fixedly connected to one side outer wall of the two fixed plates (4) through a connecting block.

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