阅读说明：本技术 一种高速新月形流浆箱 (High-speed crescent head box ) 是由 葛曹杰 张海晖 蒋屹东 崔良溶 傅哲凡 于 2019-11-21 设计创作，主要内容包括：本发明的一种高速新月形流浆箱,包括箱体,所述箱体前端设置有上唇板和下唇板；所述下唇板可拆卸的设置有箱体上；所述箱体内设置有湍流发生器；所述箱体下方设置有调节底座,所述箱体下端延伸出第一铰接板,所述箱体后端延伸出第二铰接板,所述调节底座包括底板、齿轮箱件、齿条杆件、固定台和伸缩螺杆；所述等压罐包括罐体,所述罐体下端开设有进浆口,所述罐体侧壁上设置有多个出浆接头,多个所述出浆接头分别通过多根所述进浆管连接多根所述湍流发管；所述罐体上端还固定设置有加料容器,所述加料容器上设置有多个精密电磁阀；所述等压罐周侧可分离的设置有环形走台。具有车速快,成型质量高,调节方便,安全可靠的优点。(The invention discloses a high-speed crescent flow box, which comprises a box body, wherein the front end of the box body is provided with an upper lip plate and a lower lip plate; the lower lip plate is detachably arranged on the box body; a turbulence generator is arranged in the box body; an adjusting base is arranged below the box body, a first hinged plate extends out of the lower end of the box body, a second hinged plate extends out of the rear end of the box body, and the adjusting base comprises a bottom plate, a gear box component, a rack rod piece, a fixed table and a telescopic screw rod; the isobaric tank comprises a tank body, the lower end of the tank body is provided with a slurry inlet, the side wall of the tank body is provided with a plurality of slurry outlet joints, and the plurality of slurry outlet joints are respectively connected with the plurality of turbulence hair pipes through the plurality of slurry inlet pipes; a feeding container is fixedly arranged at the upper end of the tank body, and a plurality of precise electromagnetic valves are arranged on the feeding container; the periphery of the isobaric tank is detachably provided with an annular walking platform. The device has the advantages of high speed, high forming quality, convenience in adjustment, safety and reliability.)

1. A high-speed crescent-shaped head box comprises a box body, wherein the front end of the box body is provided with an upper lip plate and a lower lip plate, the upper lip plate and the lower lip plate are converged to form a lip opening area, the upper lip plate is connected with an upper lip plate adjusting part, and the front end of the lip opening area is aligned to a sizing area formed by a forming roller and a breast roller; the method is characterized in that:

the lower lip plate is detachably arranged on the box body;

a turbulence generator is arranged in the box body, the output end of the turbulence generator is connected with the lip region, the input end of the turbulence generator is connected with an isobaric tank, a plurality of turbulence generation pipes are transversely arranged in the turbulence generator, and each turbulence generation pipe comprises a circular section, a first transition section, an elliptical section, a second transition section and a waist-shaped section; the circular section is connected with the isobaric tank through a slurry inlet pipe, the waist-shaped section is connected with the lip opening area, the first transition section is connected with the circular section and the elliptical section in a smooth mode, the second transition section is connected with the elliptical section and the waist-shaped section in a smooth mode, the length of the long axis and the length of the short axis of the elliptical section are both larger than the diameter of the circular section, the length of the waist-shaped section is larger than the length of the long axis of the elliptical section, the width of the waist-shaped section is smaller than the length of the short axis of the elliptical section, and the cross sectional areas of the waist-shaped section and the elliptical section are the same;

an adjusting base is arranged below the box body, a first hinged plate extends out of the lower end of the box body, a second hinged plate extends out of the rear end of the box body, the adjusting base comprises a bottom plate, a gear box piece, a rack rod piece, a fixed table and a telescopic screw rod, the first hinged plate is hinged to the front end of the bottom plate, the gear box piece is hinged to the rear end of the bottom plate, the rack rod piece is hinged to the second hinged plate, a fine adjustment seat is arranged at the rear end of the bottom plate, the fixed table is fixedly arranged, the telescopic screw rod penetrates through the fixed table and is in threaded connection with the fixed table, and the front end of the telescopic screw rod is in threaded connection with; the gear in the gear box is rotated, the inclination angle of the box body can be adjusted, and the distance between the bottom plate and the fixed table can be finely adjusted by rotating the telescopic screw;

the isobaric tank comprises a tank body, the lower end of the tank body is provided with a slurry inlet, the side wall of the tank body is provided with a plurality of slurry outlet joints, and the plurality of slurry outlet joints are respectively connected with the plurality of turbulence hair pipes through the plurality of slurry inlet pipes; a feeding container is fixedly arranged at the upper end of the tank body, a plurality of precise electromagnetic valves are arranged on the feeding container, the precise electromagnetic valves correspond to the slurry outlet joints one by one, and connecting hoses are arranged between the precise electromagnetic valves and the slurry outlet joints;

the adjustable pressure tank is characterized in that an annular walking platform is detachably arranged on the peripheral side of the constant pressure tank and comprises two semicircular table tops, the semicircular table tops are combined to form an annular table top, supporting legs are arranged below the semicircular table tops, and universal wheels are arranged at the bottoms of the supporting legs.

2. A high speed crescent-shaped headbox according to claim 1, characterized in that: the lower lip plate is provided with a plurality of fixing holes, and the fixing holes are suitable for bolts to penetrate through and fix the lower lip plate on the box body.

3. A high speed crescent-shaped headbox according to claim 1, characterized in that: the length of the major semi-axis of the elliptical section is a, the length of the minor semi-axis of the elliptical section is b, the length of the kidney-shaped section is L, the radius of the kidney-shaped section is R, b is 3/4a, L is (11 pi/8 +1/2) a, and R is 1/4 a.

4. A high speed crescent-shaped headbox according to claim 1, characterized in that: the telescopic screw rod is provided with three limiting nuts in threaded connection, one of the three limiting nuts is abutted to the fine adjustment seat for limiting, and the other two limiting nuts are abutted to two sides of the fixed station for limiting respectively.

5. A high speed crescent-shaped headbox according to claim 1, characterized in that: the jar body is cylindrical, go out thick liquid joint along circumferencial direction evenly distributed in on the jar body, the feeding container is ring shape tubular structure, accurate solenoid valve along circumferencial direction evenly distributed in on the feeding container.

6. A high speed crescent-shaped headbox according to claim 1, characterized in that: guardrails are arranged above the semicircular table tops; one side of the annular walking platform is also detachably provided with an escalator.

Technical Field

The invention relates to the technical field of papermaking equipment, in particular to a crescent-shaped head box.

Background

The development of the headbox has experienced long wire, short wire, inclined wire, etc. but these headboxes all have certain drawbacks and it is difficult to achieve both high quality and high throughput. For this reason, crescent-shaped headboxes have been devised which achieve a good combination of sheet quality and machine speed. And through decades of development, the crescent-shaped head box becomes the leading machine type of the global high-speed head box, and is also considered to be a more environment-friendly and economic machine type. It has the following advantages: the starting rate is high, the stability is good, the speed is high, and the capacity is large; the longitudinal and transverse tension ratio of the paper industry can be 1.2-3.0: 1, regulating within the range of 1; the controllability is good, and the quality of the paper finished by adopting the dilution water control system to adjust the quantitative transverse fluctuation is good; the operation and maintenance are more convenient. At present, the crescent-shaped head box is mainly used for producing sanitary paper such as toilet paper, napkin paper and the like.

However, due to the high speed of the crescent-shaped headbox, the internal components, especially the components at the lip, are easily abraded or deformed by the impact of the pulp, which affects the final quality of the product. And the angle and position of the existing crescent-shaped head box are inconvenient to adjust. In addition, the control of the stock feeding speed directly affects the forming quality of paper, and the control precision of the existing crescent-shaped headbox in the aspect of the stock feeding speed is still to be improved.

Therefore, it is a problem to be solved by those skilled in the art to improve the existing crescent-shaped headbox so that it overcomes the above problems.

Disclosure of Invention

The invention aims to provide a high-speed crescent-shaped head box which is high in speed, high in forming quality, convenient to adjust, safe and reliable.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a high-speed crescent-shaped head box comprises a box body, wherein the front end of the box body is provided with an upper lip plate and a lower lip plate, the upper lip plate and the lower lip plate are converged to form a lip opening area, the upper lip plate is connected with an upper lip plate adjusting part, and the front end of the lip opening area is aligned to a sizing area formed by a forming roller and a breast roller; the method is characterized in that:

the lower lip plate is detachably arranged on the box body;

a turbulence generator is arranged in the box body, the output end of the turbulence generator is connected with the lip region, the input end of the turbulence generator is connected with an isobaric tank, a plurality of turbulence generation pipes are transversely arranged in the turbulence generator, and each turbulence generation pipe comprises a circular section, a first transition section, an elliptical section, a second transition section and a waist-shaped section; the circular section is connected with the isobaric tank through a slurry inlet pipe, the waist-shaped section is connected with the lip opening area, the first transition section is connected with the circular section and the elliptical section in a smooth mode, the second transition section is connected with the elliptical section and the waist-shaped section in a smooth mode, the length of the long axis and the length of the short axis of the elliptical section are both larger than the diameter of the circular section, the length of the waist-shaped section is larger than the length of the long axis of the elliptical section, the width of the waist-shaped section is smaller than the length of the short axis of the elliptical section, and the cross sectional areas of the waist-shaped section and the elliptical section are the same;

an adjusting base is arranged below the box body, a first hinged plate extends out of the lower end of the box body, a second hinged plate extends out of the rear end of the box body, the adjusting base comprises a bottom plate, a gear box piece, a rack rod piece, a fixed table and a telescopic screw rod, the first hinged plate is hinged to the front end of the bottom plate, the gear box piece is hinged to the rear end of the bottom plate, the rack rod piece is hinged to the second hinged plate, a fine adjustment seat is arranged at the rear end of the bottom plate, the fixed table is fixedly arranged, the telescopic screw rod penetrates through the fixed table and is in threaded connection with the fixed table, and the front end of the telescopic screw rod is in threaded connection with; the gear in the gear box is rotated, the inclination angle of the box body can be adjusted, and the distance between the bottom plate and the fixed table can be finely adjusted by rotating the telescopic screw;

the isobaric tank comprises a tank body, the lower end of the tank body is provided with a slurry inlet, the side wall of the tank body is provided with a plurality of slurry outlet joints, and the plurality of slurry outlet joints are respectively connected with the plurality of turbulence hair pipes through the plurality of slurry inlet pipes; a feeding container is fixedly arranged at the upper end of the tank body, a plurality of precise electromagnetic valves are arranged on the feeding container, the precise electromagnetic valves correspond to the slurry outlet joints one by one, and connecting hoses are arranged between the precise electromagnetic valves and the slurry outlet joints;

the adjustable pressure tank is characterized in that an annular walking platform is detachably arranged on the peripheral side of the constant pressure tank and comprises two semicircular table tops, the semicircular table tops are combined to form an annular table top, supporting legs are arranged below the semicircular table tops, and universal wheels are arranged at the bottoms of the supporting legs.

Preferably, a plurality of fixing holes are formed in the lower lip plate, and the fixing holes are suitable for bolts to penetrate through and fix the lower lip plate on the box body. The structure is a simple and reliable detachable installation mode.

Preferably, the length of the major axis of the elliptical segment is a, the length of the minor axis of the elliptical segment is b, the length of the kidney segment is L, the radius of the kidney segment is R, b is 3/4a, L is (11 pi/8 +1/2) a, and R is 1/4 a. The above parameters set have the most desirable effect on the balanced control of high flow rates and micro-turbulence.

As an improvement, threaded connection has three stop nut on the telescopic screw, and one of them stop nut is contradicted fine setting seat carries on spacingly, two other stop nut contradicts respectively fixed station both sides carry on spacingly. The fixity of adjusting the base is increased, and the front and back displacement can not occur after the fixing.

Preferably, the tank body is cylindrical, the slurry outlet joints are uniformly distributed on the tank body along the circumferential direction, the feeding container is of a circular ring-shaped tubular structure, and the precise electromagnetic valves are uniformly distributed on the feeding container along the circumferential direction. The structure is simple and reasonable, and the appearance is elegant.

As an improvement, guardrails are arranged above the semicircular table tops; one side of the annular walking platform is also detachably provided with an escalator. The safety and the use convenience are improved.

Compared with the prior art, the invention has the following advantages:

1. because the crescent-shaped head box has the characteristic of high speed, and the lower lip plate has a large length, the crescent-shaped head box is easy to deform or wear due to long-time impact and flowing of paper pulp; the deformation or abrasion of the lower lip plate directly influences the forming quality of the paper, so that the replaceable structure of the lower lip plate is designed, and the forming quality of the paper is guaranteed.

2. The turbulent flow hair tube is structurally arranged by applying the hydraulics principle to ensure that high-speed pulp flows generate high-strength micro-turbulence through energy conversion when passing through the turbulent flow hair tube, so that the fibers in the pulp flows are well suspended and dispersed. Especially for a high-speed head box, the design of an elliptical section is adopted in the scheme, so that the balance of high flow speed and micro-turbulence can be controlled to the maximum extent; the design of the waist-shaped section is adopted, the waist-shaped section has a flat structure and disperses the pulp flow to two sides, so that the pulp flow can enter the lip area more smoothly and uniformly, and the forming quality is better; and the micro-turbulence not only occurs when the circular section enters the elliptical section, but also occurs when the elliptical section enters the waist-shaped section, and through the design of the multiple sections of pipe sections, the micro-turbulence is more sufficient, so that the fiber in the pulp flow is suspended and dispersed better. It is worth mentioning that the design that the cross-sectional areas of the elliptical section and the kidney-shaped section are the same enables the flow rates of the two sections to be the same, and the high vehicle speed can be kept. In addition, the design of the flat outlet of the turbulent flow hair tube is beneficial to producing thinner sanitary paper, napkin paper and other household cleaning paper, and the flat outlet of the turbulent flow hair tube has larger width, so that the number of the turbulent flow hair tubes can be reduced while the high vehicle speed is ensured, and the equipment cost is reduced.

3. The setting of adjusting the base has two kinds of regulation modes of front and back linear adjustment and upper and lower angle adjustment for the position relation of lip mouth district and forming roll, breast roll can keep in the optimum position, guarantees the shaping quality of paper.

4. This scheme is compared current crescent head box, has got rid of into thick liquid taper pipe, but directly sends out the torrent to manage the isobaric jar of connection, and the play thick liquid joint on the isobaric jar can the every torrent send out the thick liquid speed of advancing of pipe of accurate control moreover, and does not rely on the passive speed of going of advancing the thick liquid taper pipe to control the paper shaping quality more accurate. In addition, what the reinforced container of this scheme can generally be stored is the liquid medicine that needs to add, and this liquid medicine has important influence to the performance of final paper moreover. The internal storage paper pulp of jar of this scheme can adjust the liquid medicine of different proportions when the ejection of compact, can get into the liquid medicine volume that the torrent was sent out the pipe according to the velocity of flow accurate control of paper pulp, guarantees the fashioned quality of paper.

5. The annular walking board can be drawn from the middle from two sides and is arranged around the isobaric tank for maintaining and adjusting the isobaric tank. The annular walking board can be conveniently moved away when not used.

Drawings

FIG. 1 is a schematic block diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the housing portion in a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the structure of a turbulence generator according to a preferred embodiment of the present invention;

FIG. 4 is a schematic perspective view of a preferred embodiment of a turbulence hair-tube according to the present invention;

FIG. 5 is an axial view of a turbulence hair tube in accordance with a preferred embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along the line A-A of FIG. 5 in accordance with a preferred embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5 in accordance with a preferred embodiment of the present invention;

FIG. 8 is a cross-sectional view of an elliptical segment in accordance with a preferred embodiment of the present invention;

FIG. 9 is a cross-sectional view of a kidney segment in accordance with a preferred embodiment of the present invention;

FIG. 10 is a schematic view of the lower lip in accordance with a preferred embodiment of the present invention;

FIG. 11 is a schematic view of the structure of an adjustment base in accordance with a preferred embodiment of the present invention;

FIG. 12 is a schematic diagram of the construction of an isobaric tank according to a preferred embodiment of the invention;

FIG. 13 is a top view of a precision solenoid valve arranged on a charging vessel in accordance with a preferred embodiment of the present invention;

FIG. 14 is a top plan view of the arrangement of the slurry outlet connectors on the tank body in accordance with a preferred embodiment of the present invention;

FIG. 15 is a side view of a circular walking board in accordance with a preferred embodiment of the present invention;

fig. 16 is a top view of a loop shaped walking board in accordance with a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

As shown in fig. 1 to 16, a preferred embodiment of the present invention includes a box body 1, an upper lip 2 and a lower lip 3 are provided at the front end of the box body 1, the upper lip 2 and the lower lip 3 converge to form a lip area, an upper lip adjusting part 4 is connected to the upper lip 2, and the front end of the lip area is aligned with a sizing area formed by a forming roll 100 and a breast roll 200.

The lower lip plate 3 is detachably arranged on the box body 1. The lower lip 3 is provided with a plurality of fixing holes 31, and the fixing holes 31 are suitable for bolts to pass through and fix the lower lip 3 on the box body 1.

Secondly, a turbulence generator 5 is arranged in the box body 1, the output end of the turbulence generator 5 is connected with the lip region, the input end of the turbulence generator 5 is connected with an isobaric tank 7, a plurality of turbulence generator pipes 51 are transversely arranged in the turbulence generator 5, and each turbulence generator pipe 51 comprises a circular section 511, a first transition section 512, an elliptical section 513, a second transition section 514 and a waist-shaped section 515; the circular section 511 is connected with the isobaric tank 7 through a slurry inlet pipe 9, the waist-shaped section 515 is connected with a lip opening area, the first transition section 512 is connected with the circular section 511 and the elliptical section 513 smoothly, the second transition section 514 is connected with the elliptical section 513 and the waist-shaped section 515 smoothly, the lengths of the major axis and the minor axis of the elliptical section 513 are both larger than the diameter of the circular section 511, the length of the waist-shaped section 515 is larger than the length of the major axis of the elliptical section 513, the width of the waist-shaped section 515 is smaller than the length of the minor axis of the elliptical section 513, and the cross-sectional areas of the waist-shaped section 515 and the elliptical. The length of the major semi-axis of the ellipse section is a, the length of the minor semi-axis of the ellipse section is b, the length of the waist-shaped section is L, the radius of the waist-shaped section is R, b is 3/4a, L is (11 pi/8 +1/2) a, and R is 1/4 a. In this example, a is 20mm, b is 15mm, L is 96.35mm, and R is 5 mm.

Third, an adjusting base 6 is arranged below the box body 1, a first hinged plate 11 extends from the lower end of the box body 1, a second hinged plate 12 extends from the rear end of the box body 1, the adjusting base 6 comprises a bottom plate 61, a gear box piece 62, a rack rod piece 63, a fixed table 64 and a telescopic screw 65, the first hinged plate 11 is hinged to the front end of the bottom plate 61, the gear box piece 62 is hinged to the rear end of the bottom plate 61, the rack rod piece 63 is hinged to the second hinged plate 12, a fine adjustment seat 611 is arranged at the rear end of the bottom plate 61, the fixed table 64 is fixedly arranged, the telescopic screw 65 penetrates through and is in threaded connection with the fixed table 64, and the front end of the telescopic; the gear in the gear box 62 is rotated to adjust the inclination angle of the box 1, and the telescopic screw 65 is rotated to finely adjust the distance between the bottom plate 61 and the fixed table 64. In order to increase the fixation, the telescopic screw 65 is connected with three limit nuts 66 through threads, one limit nut 66 abuts against the fine adjustment seat 611 for limiting, and the other two limit nuts 66 respectively abut against the two sides of the fixed table 64 for limiting.

The isobaric tank 7 comprises a tank body 71, the lower end of the tank body 71 is provided with a slurry inlet 72, the side wall of the tank body 71 is provided with a plurality of slurry outlet joints 73, and the plurality of slurry outlet joints 73 are respectively connected with the plurality of turbulent flow hair pipes 51 through the plurality of slurry inlet pipes 9; the upper end of the tank body 71 is also fixedly provided with a feeding container 74, the feeding container 74 is provided with a plurality of precision electromagnetic valves 75, the precision electromagnetic valves 75 correspond to the slurry outlet connectors 73 one by one, and connecting hoses 76 are arranged between the precision electromagnetic valves 75 and the slurry outlet connectors 73. The tank 71 is cylindrical, the slurry outlet joints 73 are uniformly distributed on the tank 71 along the circumferential direction, the feeding container 74 is in a circular ring tubular structure, and the precise electromagnetic valves 75 are uniformly distributed on the feeding container 74 along the circumferential direction.

Fifth, the circumference of the isobaric tank 7 is detachably provided with an annular walking platform 8, the annular walking platform 8 comprises two semicircular table boards 81, the semicircular table boards 81 are combined to form an annular table board, supporting legs 82 are arranged below the semicircular table boards 81, and universal wheels 83 are arranged at the bottoms of the supporting legs 82. Guardrails 84 are arranged above the semicircular table-boards 81; one side of the annular walking platform 8 is also detachably provided with an escalator 85.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.