Slurry homogenizing structure for headbox

Abstract

The utility model belongs to the technical field of papermaking equipment, and particularly relates to a pulp homogenizing structure for a headbox, which comprises the headbox, the top of the headbox is respectively communicated with a feed pipe and a water inlet pipe, and the bottom surface of the headbox is provided with a discharge port; the homogenizing roller is arranged in the headbox, is positioned above the discharge hole and is used for stirring the slurry in the headbox; the first motor is arranged on the outer wall of the homogenizing box, and an output shaft of the first motor penetrates through the headbox and is connected with the homogenizing roller; the stirring blades are uniformly distributed on the outer wall of the homogenizing roller in the circumferential direction; wherein at least three homogenizing rollers are uniformly distributed above the discharge port in the circumferential direction, and the plurality of homogenizing rollers are in transmission connection through a belt. The slurry is prevented from precipitating at the bottom of the box body and the paper production quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking equipment, in particular to a homogenizing structure for a headbox. Background Art

[0002] In the papermaking industry, the headbox is a key piece of equipment, ensuring uniformity and quality of paper by evenly delivering pulp to the wire section of the paper machine. The pulp must be thoroughly mixed and dispersed within the headbox to prevent fiber agglomeration and sedimentation, thereby ensuring the strength and appearance of the paper.

[0003] The existing headbox has the problem of pulp settling at the bottom of the box, which affects the quality of paper production. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned technical problems and provide a pulp homogenizing structure for a headbox, which prevents pulp from settling at the bottom of the box and improves the quality of paper production.

[0005] In view of this, the present invention provides a homogenizing structure for a headbox, comprising:

[0006] A headbox, wherein a feed pipe and a water inlet pipe are connected to the top of the headbox, and a discharge port is provided on the bottom of the headbox;

[0007] A homogenizing roller is provided inside the headbox and above the discharge port, and is used to stir the slurry inside the headbox;

[0008] A first motor, wherein the first motor is arranged on the outer wall of the homogenizing box, and the output shaft passes through the headbox and is connected to the homogenizing roller;

[0009] stirring blades, the stirring blades being evenly distributed circumferentially on the outer wall of the homogenizing roller;

[0010] The homogenizing rollers are evenly distributed in the circumferential direction at at least three locations above the discharge port, and the multiple homogenizing rollers are connected by belt transmission.

[0011] In this technical solution, the slurry is transported to the interior of the headbox through a feed pipe, and diluted by adding diluent through a water inlet pipe. Starting the first motor can drive the homogenizing roller and the stirring blade to rotate, thereby stirring the slurry near the discharge port. The homogenizing roller is provided in at least three places, which is beneficial to increase the stirring range and avoid the slurry from settling at the bottom of the box, which is beneficial to improving the quality of paper production.

[0012] In the above technical solution, further, a grinding structure is provided below the discharge pipe, and the grinding structure is used for grinding the slurry.

[0013] In the above technical solution, further, the grinding structure includes:

[0014] Grinding rollers are rotatably arranged below the discharge pipe and are symmetrically arranged;

[0015] A second motor, wherein the second motor is arranged on the outer wall of the headbox, and an output shaft passes through the headbox and is connected to the grinding roller;

[0016] The limiting seat is arranged between the grinding roller and the inner wall of the headbox, and a semicircular groove is arranged on the side of the limiting seat close to the grinding roller.

[0017] In this technical solution, slurry is fed into the headbox through a feed pipe and falls onto the grinding rollers, where they are symmetrically arranged to grind the slurry. A stopper prevents the slurry from flowing through the gap between the grinding rollers and the inner wall of the headbox and into the lower portion of the headbox. This grinding structure improves the quality of the slurry.

[0018] In the above technical solution, further, the limit seat is provided with an inclined surface on the upper side.

[0019] In the present technical solution, the inclined surface is provided to prevent the material from remaining on the top surface of the limiting seat, which is beneficial to improving the utilization rate of the slurry.

[0020] In the above technical solution, further, a filter plate is horizontally arranged inside the headbox, and a cleaning structure is arranged above the filter plate.

[0021] In the above technical solution, further, the cleaning structure includes:

[0022] A scraper, the scraper being movably arranged on the top surface of the filter plate;

[0023] A driving cylinder, wherein the driving cylinder is symmetrically arranged on the outer wall of the headbox, and the output shaft passes through the side wall of the headbox and is connected to the scraper;

[0024] The collecting structure is arranged on the side of the filter plate and is used to collect the slurry on the top surface of the filter plate.

[0025] In this technical solution, the scraper is driven by a cylinder to move horizontally on the top surface of the filter plate, pushing the slurry on the top surface of the filter plate into the collection structure. The movable scraper can clean the top surface of the filter plate, which is beneficial to improving the filtration efficiency of the filter plate.

[0026] In the above technical solution, further, the collection structure includes:

[0027] A cavity is provided on a side of the filter plate and is away from the driving cylinder;

[0028] A lifting trough is provided on the top surface of the cavity and is arranged at the connection between the cavity and the headbox;

[0029] A lifting plate, the lifting plate is movably arranged in the lifting slot, and a boss is provided on the top surface of the lifting plate;

[0030] A guide edge, the guide edge being obliquely arranged on the bottom surface of the lifting plate and being arranged close to the driving cylinder;

[0031] A guide block is symmetrically arranged on the front of the scraper, and the guide block is provided with an inclined surface close to the side of the lifting plate;

[0032] Wherein, a spring is provided between the top surface of the lifting plate and the top surface of the lifting slot.

[0033] In this technical solution, the scraper is pushed out by driving the cylinder, and the guide block is driven to move. Through the cooperation between the set inclined surface and the guide edge, the lifting plate can be driven to move into the lifting groove, so that the slurry driven by the scraper can be pushed into the cavity. The driving cylinder retracts the output shaft, and the lifting plate moves downward through the set spring, blocking the cavity and the inside of the slurry box.

[0034] In the above technical solution, further, a lifting structure is provided in the cavity, and the lifting structure is used to lift the slurry in the cavity to above the headbox.

[0035] In the above technical solution, further, the lifting structure includes:

[0036] A delivery pipe, the delivery pipe passes through the top surface of the cavity and is connected to the upper end of the headbox via a connecting pipe;

[0037] A spiral blade is rotatably disposed in the conveying pipe to convey the slurry;

[0038] The third motor is arranged on the top surface of the conveying pipe, and the output shaft of the third motor is connected to the spiral blade.

[0039] In this technical solution, the third motor is started to drive the spiral blade to rotate, thereby driving the slurry in the cavity to move upward and transport it to the top of the grinding roller through the provided connecting pipe, so that the slurry can be re-ground.

[0040] The beneficial effects of the utility model are:

[0041] 1. Start the first motor to drive the homogenizing roller and the stirring blade to rotate, thereby stirring the slurry near the discharge port. The homogenizing roller is set at at least three locations, which is beneficial to increase the stirring range and prevent the slurry from settling at the bottom of the box, which is beneficial to improving the quality of paper production.

[0042] 2. The slurry is fed into the headbox through a feed pipe and falls onto the grinding rollers, where it is ground by the symmetrically arranged grinding rollers. A stopper prevents the slurry from flowing through the gap between the grinding rollers and the inner wall of the headbox and into the lower portion of the headbox. This grinding structure improves the quality of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0044] Figure 2 It is a cross-sectional view of the utility model;

[0045] Figure 3 It is a cross-sectional view of the present invention from another perspective;

[0046] Figure 4 This utility model Figure 2 Enlarged view of area A in the middle;

[0047] The marks in the figure are:

[0048] 1. Headbox; 2. Feed pipe; 3. Water inlet pipe; 4. Discharge port; 5. Homogenizer roller; 6. First motor; 7. Stirring blade; 8. Grinding structure; 801. Grinding roller; 802. Second motor; 803. Limit seat; 804. Groove; 9. Inclined surface; 10. Filter plate; 11. Cleaning structure; 1101. Scraper; 1102. Driving cylinder; 12. Collecting structure; 1201. Cavity; 1202. Lifting trough; 1203. Lifting plate; 1204. Guide edge; 1205. Guide block; 1206. Boss; 1207. Spring; 13. Lifting structure; 1301. Conveying pipe; 1302. Spiral blade; 1303. Third motor; 1304. Connecting pipe. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0050] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0051] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0052] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0054] Example 1:

[0055] Depend on Figure 1-Figure 4 As shown, this embodiment provides a homogenizing structure for a headbox, comprising: a headbox 1, wherein a feed pipe 2 and a water inlet pipe 3 are respectively connected to the top of the headbox 1, and a discharge port 4 is opened on the bottom surface of the headbox 1; a homogenizing roller 5, wherein the homogenizing roller 5 is arranged inside the headbox 1 and above the discharge port 4, for stirring the slurry inside the headbox 1; a first motor 6, wherein the first motor 6 is arranged on the outer wall of the homogenizing box, and the output shaft passes through the headbox 1 and is connected to the homogenizing roller 5; a stirring blade 7, wherein the stirring blade 7 is evenly distributed circumferentially on the outer wall of the homogenizing roller 5; wherein the homogenizing roller 5 is evenly distributed circumferentially at at least three locations above the discharge port 4, and the multiple homogenizing rollers 5 are connected by a belt drive.

[0056] The slurry is transported to the interior of the headbox 1 through the provided feed pipe 2, and diluted by adding diluent through the provided water inlet pipe 3. The first motor 6 is started to drive the homogenizing roller 5 and the stirring blade 7 to rotate, thereby stirring the slurry near the discharge port 4. The homogenizing roller 5 is provided at least three times, which is beneficial to increase the stirring range and avoid the slurry from settling at the bottom of the box, which is beneficial to improving the quality of paper production.

[0057] Furthermore, a grinding structure 8 is provided below the discharge pipe, and the grinding structure 8 is used for grinding the slurry. The grinding structure 8 includes: a grinding roller 801, which is rotatably provided below the discharge pipe and is symmetrically provided; a second motor 802, which is provided on the outer wall of the headbox 1, and the output shaft passes through the headbox 1 and is connected to the grinding roller 801; a limit seat 803, which is provided between the grinding roller 801 and the inner wall of the headbox 1, and the limit seat 803 is provided with a semicircular groove 804 close to the grinding roller 801.

[0058] The slurry is fed into the headbox 1 through the feed pipe 2 and falls onto the grinding rollers 801, where it is ground by the symmetrically arranged grinding rollers 801. The stoppers 803 prevent the slurry from flowing through the gap between the grinding rollers 801 and the inner wall of the headbox 1 and into the lower portion of the headbox 1. The grinding structure 8 improves the quality of the slurry.

[0059] Furthermore, the limiting seat 803 is provided with an inclined surface 9 on its upper side.

[0060] The inclined surface 9 can prevent the material from remaining on the top surface of the limiting seat 803, which is beneficial to improving the utilization rate of the slurry.

[0061] Example 2:

[0062] Depend on Figure 1-Figure 4 As shown, this embodiment provides a homogenizing structure for a headbox, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] Furthermore, a filter plate 10 is horizontally arranged inside the headbox 1, and a cleaning structure 11 is arranged above the filter plate 10. The cleaning structure 11 includes: a scraper 1101, which is movably arranged on the top surface of the filter plate 10; a driving cylinder 1102, which is symmetrically arranged on the outer wall of the headbox 1, and the output shaft passes through the side wall of the headbox 1 and is connected to the scraper 1101; a collecting structure 12, which is arranged on the side of the filter plate 10 to collect the slurry on the top surface of the filter plate 10.

[0064] By driving the air cylinder 1102 to push the scraper 1101 to translate on the top surface of the filter plate 10, the slurry on the top surface of the filter plate 10 can be pushed into the collection structure 12. The movable scraper 1101 can clean the top surface of the filter plate 10, which is beneficial to improving the filtration efficiency of the filter plate 10.

[0065] Further, the collecting structure 12 comprises: a cavity 1201 arranged at the side of the filter plate 10 and away from the driving air cylinder 1102; a lifting groove 1202 opened at the top surface of the cavity 1201 and arranged at the connecting position of the cavity 1201 and the headbox 1; a lifting plate 1203 movably arranged in the lifting groove 1202 and provided with a boss 1206 on the top surface of the lifting plate 1203; a guide edge 1204 obliquely arranged on the bottom surface of the lifting plate 1203 and arranged close to the driving air cylinder 1102; and guide blocks 1205 symmetrically arranged on the front surface of the scraper 1101 and provided with inclined surfaces close to the side surface of the lifting plate 1203; wherein the top surface of the lifting plate 1203 and the top surface of the lifting groove 1202 are provided with springs 1207.

[0066] The scraper 1101 is pushed out by the driving air cylinder 1102, and the guide blocks 1205 are moved, and through the cooperation between the inclined surfaces and the guide edge 1204, the lifting plate 1203 is moved into the lifting groove 1202, so that the pulp carried by the scraper 1101 can be pushed into the cavity 1201, the output shaft of the driving air cylinder 1102 is retracted, and the lifting plate 1203 is moved downwardly through the springs 1207, so as to block the cavity 1201 from the inside of the headbox 1.

[0067] Further, the cavity 1201 is provided with a lifting structure 13 for lifting the pulp in the cavity 1201 above the headbox 1.

[0068] Further, the lifting structure 13 comprises: a conveying pipe 1301 penetrating through the top surface of the cavity 1201 and provided with a connecting pipe 1304 in communication with the upper end of the headbox 1; a spiral blade 1302 rotatably arranged in the conveying pipe 1301 for conveying the pulp; and a third motor 1303 arranged on the top surface of the conveying pipe 1301 and provided with an output shaft connected with the spiral blade 1302.

[0069] The third motor 1303 is started to drive the spiral blade 1302 to rotate, so as to drive the pulp in the cavity 1201 to move upwardly and conveyed to above the grinding roller 801 through the connecting pipe 1304, so as to regrind the pulp.

[0070] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A homogenizing structure for a headbox, characterized in that ,include: A headbox (1), wherein a feed pipe (2) and a water inlet pipe (3) are respectively connected to each other at the top of the headbox (1), and a discharge port (4) is provided at the bottom of the headbox (1); A homogenizing roller (5), the homogenizing roller (5) being arranged inside the headbox (1) and located above the discharge port (4), for stirring the slurry inside the headbox (1); A first motor (6), wherein the first motor (6) is arranged on the outer wall of the homogenizing box, and an output shaft passes through the headbox (1) and is connected to the homogenizing roller (5); stirring blades (7), the stirring blades (7) being evenly distributed circumferentially on the outer wall of the homogenizing roller (5); The homogenizing rollers (5) are evenly distributed in the circumferential direction at at least three locations above the discharge port (4), and the multiple homogenizing rollers (5) are connected via a belt transmission.

2. A homogenizing structure for a headbox according to claim 1, characterized in that: A grinding structure (8) is provided below the discharge pipe, and the grinding structure (8) is used for grinding the slurry.

3. A homogenizing structure for a headbox according to claim 2, characterized in that: The grinding structure (8) comprises: A grinding roller (801), the grinding roller (801) is rotatably arranged below the discharge pipe and is symmetrically arranged; a second motor (802), the second motor (802) being arranged on the outer wall of the headbox (1), and having an output shaft passing through the headbox (1) and connected to the grinding roller (801); A limiting seat (803) is provided between the grinding roller (801) and the inner wall of the headbox (1), and a semicircular groove (804) is provided on the side of the limiting seat (803) close to the grinding roller (801).

4. A homogenizing structure for a headbox according to claim 3, characterized in that: The limiting seat (803) is provided with an inclined surface (9) on its upper side.

5. The homogenizing structure for a headbox according to claim 2, characterized in that: A filter plate (10) is horizontally arranged inside the headbox (1), and a cleaning structure (11) is arranged above the filter plate (10).

6. A homogenizing structure for a headbox according to claim 5, characterized in that: The cleaning structure (11) comprises: A scraper (1101), wherein the scraper (1101) is movably arranged on the top surface of the filter plate (10); A driving cylinder (1102), wherein the driving cylinder (1102) is symmetrically arranged on the outer wall of the headbox (1), and the output shaft passes through the side wall of the headbox (1) and is connected to the scraper (1101); A collecting structure (12) is provided on the side of the filter plate (10) and is used to collect slurry on the top surface of the filter plate (10).

7. A homogenizing structure for a headbox according to claim 6, characterized in that: The collecting structure (12) comprises: A cavity (1201), wherein the cavity (1201) is arranged on a side of the filter plate (10) and is away from the driving cylinder (1102); A lifting groove (1202), the lifting groove (1202) is opened on the top surface of the cavity (1201) and is arranged at the connection between the cavity (1201) and the headbox (1); A lifting plate (1203), wherein the lifting plate (1203) is movably arranged in the lifting slot (1202), and a boss (1206) is provided on the top surface of the lifting plate (1203); A guide edge (1204), the guide edge (1204) is obliquely arranged on the bottom surface of the lifting plate (1203) and is arranged close to the driving cylinder (1102); A guide block (1205), wherein the guide block (1205) is symmetrically arranged on the front of the scraper (1101), and a slope is arranged on the side of the guide block (1205) close to the lifting plate (1203); Wherein, a spring (1207) is provided between the top surface of the lifting plate (1203) and the top surface of the lifting slot (1202).

8. A homogenizing structure for a headbox according to claim 7, characterized in that: A lifting structure (13) is provided in the cavity (1201), and the lifting structure (13) is used to lift the slurry in the cavity (1201) to above the headbox (1).

9. A homogenizing structure for a headbox according to claim 8, characterized in that: The lifting structure (13) comprises: A delivery pipe (1301), wherein the delivery pipe (1301) passes through the top surface of the cavity (1201) and is connected to the upper end of the headbox (1) via a connecting pipe (1304); A spiral blade (1302), wherein the spiral blade (1302) is rotatably disposed in the conveying pipe (1301) for conveying the slurry; The third motor (1303) is arranged on the top surface of the conveying tube (1301), and the output shaft of the third motor (1303) is connected to the spiral blade (1302).

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