Intelligent dosing control device for single-light kraft paper production line

Abstract

The utility model discloses an intelligent dosing control device for a single-light kraft paper production line, which comprises a dosing system and a plurality of paper pulp stirring kettles, the dosing system and the paper pulp stirring kettles are arranged on an equipment frame, the output end of the dosing system is communicated with a connecting pipe I through a flow dividing pipe, the connecting pipe I is communicated with a pressurizing pipe, and the pressurizing pipe is communicated with a water pump. The bottom end of the pressurizing pipe is communicated with a connecting pipe II penetrating through a central preformed hole of the kettle cover, and the output end of the connecting pipe II extends to the bottom of the kettle cover; in the process that a quantitative medicament is added into a paper pulp stirring kettle through a metering pump in a traditional medicament adding system, a stretching-in type material distributing pipe is inserted into the paper pulp stirring kettle, and horizontal and vertical all-directional medicament injection into the paper pulp stirring kettle is realized through holes in the surface of the material distributing pipe, so that the uniform mixing effect is better; and meanwhile, the external expansion type structure does not cause interference on a stirring mechanism of the paper pulp stirring kettle.

Description

Technical Field

[0001] The utility model belongs to the field of dosing systems, and specifically relates to an intelligent dosing control device for a single-light kraft paper production line. Background Art

[0002] Single gloss kraft paper is a special type of kraft paper, which is characterized by one side of the paper being specially treated to have a higher smoothness and glossiness, while the other side retains its original rough texture. This type of paper is usually used in applications that require single-sided smooth properties, such as packaging, printing and special craft production, etc.

[0003] Chemical agents (commonly referred to as "dosing") are added during the production of kraft paper to improve the properties of the paper, increase production efficiency and ensure the quality of the final product.

[0004] As for the current dosing device, the method of controlling dosing is still implemented by the traditional chemical dosing system, and its output mode is a single pipeline input into the stirring tank. Dosing is done during the pulp stirring preparation. Although precise metering can be achieved through a metering pump, it is impossible to control the dosing point by only a single pipeline, so it is impossible to achieve rapid contact and reaction between the agent and the pulp fiber. Utility Model Content

[0005] In view of the above defects, the utility model provides an intelligent dosing control device for a single-light kraft paper production line, comprising a dosing system and a plurality of pulp stirring kettles, wherein the dosing system and the pulp stirring kettles are both installed on an equipment rack, and the output end of the dosing system is connected to a connecting pipe I through a shunt pipe, and the connecting pipe I is connected to a boosting pipe, and the bottom end of the boosting pipe is connected to a connecting pipe II that passes through a reserved hole in the center of a kettle cover, and the output end of the connecting pipe II extends to the bottom of the kettle cover;

[0006] The output end of the connecting pipe II is connected to a flow balancing disk, a cavity is provided inside the flow balancing disk, a bearing is installed on the inner bottom wall of the cavity, a rotating column is fixed to the inner ring of the bearing, a plurality of retention seats distributed in a circular array are fixed to the outer ring of the rotating column, an integrally formed flow guide surface is provided on the inner wall of the retention seat, and a flow guide groove is provided on the side of the retention seat away from the rotating column;

[0007] The outer surface of the flow equalizing disk is provided with connecting holes corresponding to the number of retention seats, and the connecting holes are distributed in a stepped manner. The connecting holes are connected to the distribution pipes through internal threads. The distribution pipe includes a connecting section, an extension section and a bottom section which are connected in sequence. The input end of the connecting section is connected to the corresponding connecting hole through a fixed threaded joint, and the outer surfaces of the extension section and the bottom section are provided with openings for discharging medicine.

[0008] Furthermore, the inner hole of the boost pipe and the connecting pipe II that are interconnected forms a cone, and the output direction thereof is an end away from the axis of the flow balancing disk and corresponds to the guide surface.

[0009] Furthermore, the connecting section, the extension section and the bottom section are movably connected via threads, and the connecting section is outwardly expanded.

[0010] Furthermore, the aperture value of the opening at the extended section is greater than the aperture value of the opening at the bottom section.

[0011] Furthermore, each of the guide grooves is located on the same horizontal line as the corresponding connecting hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the process of adding a certain amount of reagents to the pulp mixing kettle through the metering pump in the traditional dosing system, the extended distribution pipe is inserted into the inside of the pulp mixing kettle, and the openings on the surface of the distribution pipe are used to achieve horizontal and vertical all-round injection of the inside of the pulp mixing kettle, so that the mixing effect is better. At the same time, the outward expansion structure will not interfere with the stirring mechanism of the pulp mixing kettle itself;

[0014] 2. When adding medicine, the medicine is discharged separately through several distribution pipes at intervals, so that the dosing effect is more uniform and no accumulation occurs in a certain area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the pulp stirring kettle and the kettle cover in the utility model in a separated state.

[0017] Figure 3 It is a cross-sectional view of the connecting pipe I, the boosting pipe and the connecting pipe II in the utility model in the connected state.

[0018] Figure 4 It is a schematic diagram of the flow balancing plate and each material distribution pipe after being separated in the utility model.

[0019] Figure 5 It is a cross-sectional view of the flow balancing disk in the utility model in the front view direction.

[0020] Figure 6 It is a cross-sectional view of the flow balancing disk in the utility model when viewed from above.

[0021] Figure 7 It is a schematic diagram of a single retention seat in the utility model.

[0022] In the figure: 1. Equipment frame; 2. Dosing system; 31. Pulp stirring kettle; 32. Kettle cover; 4. Diverter pipe; 5. Booster pipe; 61. Connecting pipe I; 62. Connecting pipe II; 7. Feeding pipe; 71. Connecting section; 72. Extension section; 73. Bottom section; 81. Flow equalizing plate; 82. Connecting hole; 83. Retention seat; 84. Guide surface; 85. Bearing; 86. Threaded joint; 87. Guide groove. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide embodiments of the device. However, the device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example

[0026] like Figure 1 As shown, this embodiment provides an intelligent dosing control device for a single-light kraft paper production line, including a dosing system 2 and a plurality of pulp stirring kettles 31. Like conventional equipment, the dosing system 2 includes a plurality of conveying pipelines, a pump for conveying, a metering valve at each pipeline, etc. The pulp stirring kettle 31 is also the same as conventional equipment, and is provided with a stirring mechanism (such as a stirring rod, a spiral rod, etc.) inside, which is driven by a motor installed in an equipment compartment at the bottom of the pulp stirring kettle 31, and will not be described in detail here;

[0027] The dosing system 2 and the pulp stirring kettle 31 are both installed on the equipment frame 1. The output end of the dosing system 2 is connected to the connecting pipe I61 through the shunt pipe 4. Figure 2-3 As shown, the connecting pipe I61 is connected to the boosting pipe 5, and the bottom end of the boosting pipe 5 is connected to the connecting pipe II62 that penetrates the central reserved hole of the kettle cover 32, and the output end of the connecting pipe II62 extends to the bottom of the kettle cover 32. In detail, the inner hole of the boosting pipe 5 and the connecting pipe II62 that are interconnected forms a cone, and its output direction is the end away from the axis of the flow equalizing disk 81 and corresponds to the guide surface 84. Its function is to converge the passing medicine through the conical channel, so that its output pressure is greater, so as to meet the subsequent kinetic energy requirement for driving the retention seat 83 to rotate;

[0028] like Figure 5-7As shown, the output end of the connecting pipe II62 is connected to the flow balancing disk 81, and a cavity is provided inside the flow balancing disk 81. A bearing 85 is installed on the inner bottom wall of the cavity. A rotating column is fixed to the inner ring of the bearing 85, and a plurality of retention seats 83 distributed in a circular array are fixed to the outer ring of the rotating column, that is, a trapezoidal body. However, in order to adapt to the inner wall of the flow balancing disk 81 and the outer ring of the rotating column, the inner and outer rings are both set to arc surfaces. The outer ring should be attached to the inner wall of the flow balancing disk 81, and a rubber pad can be pasted to increase the sealing performance. The inner wall of the retention seat 83 is provided with an integrally formed guide surface 84, and a guide groove corresponding to the connecting hole 82 is opened on the side of the retention seat 83 away from the rotating column. 87, the guide grooves 87 are respectively on the same horizontal line with the corresponding connecting holes 82, ensuring that each retention seat 83 corresponds to a guide groove 87 and a material distribution pipe 7 for liquid discharge operation, so as to achieve the function of uniformly adding medicine at different angles. It should be noted that in order to prevent residual medicine inside the retention seat 83, the inner bottom wall of the retention seat 83 can be set to a slope shape to guide the flow to the position of its own guide groove 87. The thickness of the flow equalizing plate 81 can also be increased to make the horizontal position of each connecting hole 82 lower than the central horizontal position of the flow equalizing plate 81. In this way, the problem of residual medicine inside the retention seat 83 can also be reduced;

[0029] When the pressurized medicine is injected through the connecting pipe II62, the direction of its output impacts the guide surface 84. The design of the inclined surface has a better force effect, so as to achieve the function of pushing the contacting retention seat 83. Due to the setting of the rotating column and the bearing 85, each retention seat 83 can be pushed in turn and then rotated as a whole. Under this movement, the medicine injected inside will be temporarily stored until it moves to the corresponding connecting hole 82, and can be discharged from the opening of the connected distribution pipe 7;

[0030] like Figure 4 As shown, the outer surface of the flow equalizing disk 81 is provided with connecting holes 82 corresponding to the number of the retention seats 83, and the connecting holes 82 are distributed in a stepped manner (i.e., in a highly progressive manner, and the positions of the holes do not overlap), that is, the connecting holes 82 are evenly distributed and are not at the same horizontal position. Its function is that, if the number of the retention seats 83, the connecting holes 82 and the material distribution pipe 7 in this embodiment is 6, for the first connecting hole 82, only when the first retention seat 83 moves to this point, corresponding to the guide groove 87 at the first retention seat 83, when the other five retention seats 83 pass through this point, the first connecting hole 82 will be sealed by the outer walls of the other five retention seats 83, and the work of discharging the medicine will not be performed;

[0031] The connecting hole 82 is connected to the distribution pipe 7 through an internal thread. The distribution pipe 7 includes a connecting section 71, an extension section 72 and a bottom section 73 which are connected in sequence. The input end of the connecting section 71 is connected to the corresponding connecting hole 82 through a fixed threaded joint 86. The outer surfaces of the extension section 72 and the bottom section 73 are both provided with openings for discharging medicine, and the aperture value of the opening at the extension section 72 is larger than the aperture value of the opening at the bottom section 73. It has the same function as the booster pipe 5, and serves to increase the intensity of the discharged water flow during output. Since the pulp at the bottom will precipitate and accumulate, a greater output intensity will have a better mixing effect for bottom dosing. At the same time, the connecting section 71, the extension section 72 and the bottom section 73 are connected by threads. The connecting section 71 is outwardly expanded and will not contact the stirring mechanism in the pulp stirring kettle 31.

[0032] It should be noted that the structure described in the utility model can be implemented in a variety of different forms and is not limited to the described embodiments. Any equivalent transformations made by ordinary technicians in this field using the contents of the utility model specification and drawings, or directly or indirectly applied to other related technical fields, such as the loading and unloading of other items, are included in the protection scope of the utility model.

Claims

1. An intelligent dosing control device for a single-light kraft paper production line, comprising a dosing system and a plurality of pulp stirring kettles, characterized in that: The dosing system and the pulp stirring kettle are both installed on the equipment frame, the output end of the dosing system is connected to a connecting pipe I through a shunt pipe, the connecting pipe I is connected to a boosting pipe, the bottom end of the boosting pipe is connected to a connecting pipe II that passes through a central reserved hole of the kettle cover, and the output end of the connecting pipe II extends to the bottom of the kettle cover; The output end of the connecting pipe II is connected to a flow balancing disk, a cavity is provided inside the flow balancing disk, a bearing is installed on the inner bottom wall of the cavity, a rotating column is fixed to the inner ring of the bearing, a plurality of retention seats distributed in a circular array are fixed to the outer ring of the rotating column, an integrally formed flow guide surface is provided on the inner wall of the retention seat, and a flow guide groove is provided on the side of the retention seat away from the rotating column; The outer surface of the flow equalizing disk is provided with connecting holes corresponding to the number of retention seats, and the connecting holes are distributed in a stepped manner. The connecting holes are threadedly connected to a distribution pipe through an internal thread. The distribution pipe includes a connecting section, an extension section and a bottom section which are connected in sequence. The input end of the connecting section is connected to the corresponding connecting hole through a fixed threaded joint, and the outer surfaces of the extension section and the bottom section are both provided with openings for discharging medicine.

2. The intelligent dosing control device for a single-light kraft paper production line according to claim 1, characterized in that: The inner hole of the boost pipe and the connecting pipe II connected to each other forms a cone, and the output direction is the end away from the axis of the flow equalizing disk and corresponds to the guide surface.

3. The intelligent dosing control device for a single-light kraft paper production line according to claim 1, characterized in that: The connecting section, the extension section and the bottom section are movably connected via threads, and the connecting section is in an outward expansion shape.

4. The intelligent dosing control device for a single-light kraft paper production line according to claim 3, characterized in that: The aperture value of the opening at the extended section is greater than the aperture value of the opening at the bottom section.

5. The intelligent dosing control device for a single-light kraft paper production line according to claim 1, characterized in that: Each of the guide grooves is located at the same horizontal line as the corresponding connecting hole.

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