Auxiliary feeding equipment for paper pulp raw material whitening agent

Abstract

The utility model belongs to the technical field of papermaking equipment, and particularly relates to auxiliary feeding equipment for a paper pulp raw material whitening agent. Comprising a mixing tank, a stirring assembly is arranged in the mixing tank, the mixing tank is connected with a premixing device through a pipeline, the premixing device is connected with a whitening agent conveying pipeline and a paper pulp conveying pipeline, and the premixing device is provided with a premixing assembly for preliminarily mixing a whitening agent and paper pulp; the premixing device is arranged to primarily mix the paper pulp raw material and the whitening agent, so that the paper pulp raw material and the whitening agent are contacted and dispersed to a certain extent before entering the mixing tank, and subsequent full mixing in the mixing tank is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking equipment, in particular to an auxiliary feeding device for a whitening agent for a pulp raw material. Background Art

[0002] In papermaking, adding brighteners to the pulp can effectively improve whiteness, enhance the overall brightness and glossiness of the paper, and significantly improve the appearance quality of paper products. Chinese utility model patent publication number CN212270530U discloses a device for adding liquid fluorescent brighteners to paper processing. The device stirs the brightener in a storage tank to make the brightener more uniform within the tank, then extracts the brightener through a one-way valve and delivers it to the pulp through a pipe. However, the pulp and brightener still need to be mixed, and uneven mixing can lead to inconsistent whiteness across different parts of the paper, as well as uneven overall brightness and gloss. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned technical problems and provide an auxiliary feeding device for pulp raw material whitening agent. A pre-mixing device is set to perform preliminary mixing of the pulp raw material and the whitening agent, which can ensure that the two have a certain contact and dispersion before entering the mixing tank, which is conducive to subsequent sufficient mixing in the mixing tank.

[0004] In view of this, the utility model provides an auxiliary feeding equipment for whitening agent of pulp raw material, including a mixing tank, a stirring assembly is arranged in the mixing tank, a premixing device is connected to the mixing tank pipeline, the premixing device is connected to the whitening agent delivery pipeline and the pulp delivery pipeline, and the premixing device is provided with a premixing assembly for preliminary mixing of the whitening agent and the pulp.

[0005] In the present technical solution, the pulp raw materials and the whitening agent to be mixed are fed into the pre-mixing device in equal proportions, the pre-mixing component performs a preliminary mixing of the input pulp raw materials and the whitening agent, and then the pulp raw materials and the whitening agent after the preliminary mixing are transported to the mixing tank through a pipeline, and the stirring component in the mixing tank fully mixes them. The preliminary mixing of the pulp raw materials and the whitening agent by the pre-mixing device can ensure that the two have a certain contact and dispersion before entering the mixing tank, which helps the subsequent sufficient mixing in the mixing tank. In the mixing tank, the stirring component further fully mixes the materials after the preliminary mixing, so that the whitening agent can be more evenly distributed in the pulp, thereby improving the whiteness and appearance quality of the paper.

[0006] In the above technical solution, further, the premixing device includes a premixing cylinder, the premixing cylinder is connected to the whitening agent delivery pipeline and the pulp delivery pipeline, the bottom of the premixing cylinder is connected to the material delivery pipeline, and the pipelines are all provided with control valves for control. A premixing component is provided in the premixing device, and the premixing component can drive the materials in the premixing cylinder to mix.

[0007] In this technical solution, the whitening agent delivery pipeline is connected to a first control valve, the pulp delivery pipeline is connected to a second control valve, and a third control valve for controlling the delivery pipeline is provided at the bottom of the mixing drum to control the whitening agent and pulp raw materials in equal proportions to enter the mixing drum, undergo preliminary mixing with the mixing assembly, and then enter the mixing tank through the delivery pipeline for the next step of sufficient mixing.

[0008] In the above technical solution, the premixing assembly further includes a first hydraulic rod fixedly arranged on the top of the premixing cylinder, an output rod of the first hydraulic rod passes through the top of the cylinder and enters the premixing cylinder, and the end of the output rod is fixedly connected to a first mixing plate.

[0009] In the above technical solution, further, the first mixing plate abuts against the inner wall of the pre-mixing cylinder, and a plurality of flow channels are formed on the first mixing plate.

[0010] In this technical solution, a circular array of flow channels is provided through the first mixing plate. The first mixing plate can move back and forth along the height direction of the cylinder driven by the first hydraulic rod. The material can be squeezed and pass through the flow channel, which has a good pre-mixing effect.

[0011] In the above technical solution, further, it includes a second mixing plate, which is arranged above the first mixing plate in parallel and fixedly connected to the output rod, and the flow channels on the second mixing plate and the first mixing plate are staggered.

[0012] In the above technical solution, further, the mixing assembly includes a first motor fixedly arranged on the top of the mixing tank, the output end of the first motor passes through the mixing tank and is connected to a stirring rod, the stirring rod extends to the bottom of the mixing tank, and the stirring rod is arrayed along the length direction with stirring blades extending radially along the tank body.

[0013] In the above technical solution, further, the stirring blade is connected to a wall scraping assembly, which can be driven by the mixing assembly to move the material adhering to the side wall of the mixing tank outward in the radial direction of the mixing tank for scraping.

[0014] In the above technical solution, further, the scraping assembly includes a scraper, the scraper is connected to a slide column, the slide column is slidably arranged in a slide groove opened by the stirring blade, and the slide column is elastically connected to the bottom wall of the slide groove through an elastic member.

[0015] In this technical solution, the stirring blades rotate to mix the materials in the tank body, and the scraper assembly is driven to rotate. The centrifugal force forces the elastic part to stretch until the scraper scrapes the material adhered to the side wall to make it participate in the mixing, avoiding material loss and increasing the difficulty of cleaning.

[0016] In the above technical solution, further, the lower end of the mixing tank is a conical structure, and the bottom of the tank is provided with a discharge pipe connected thereto, which is controlled by a discharge valve to ensure smooth discharge of the mixed material and avoid retention of the material in the mixing roller.

[0017] In this technical solution, the lower end of the mixing tank is a conical structure, and the bottom of the tank is connected to a discharge pipe, which is controlled by a discharge valve to ensure smooth discharge of the mixed material and avoid material retention in the mixing roller.

[0018] The beneficial effects of the utility model are:

[0019] 1. The pulp raw materials and whitening agents to be mixed are fed into the pre-mixing device in equal proportions. The pre-mixing component preliminarily mixes the input pulp raw materials and whitening agents, and then transports the preliminarily mixed pulp raw materials and whitening agents to the mixing tank through a pipeline. The stirring component in the mixing tank fully mixes them. The preliminarily mixing of the pulp raw materials and whitening agents by the pre-mixing device can ensure that the two have a certain contact and dispersion before entering the mixing tank, which is conducive to the subsequent full mixing in the mixing tank. In the mixing tank, the stirring component further fully mixes the preliminarily mixed materials, so that the whitening agent can be more evenly distributed in the pulp, thereby improving the whiteness and appearance quality of the paper.

[0020] 2. The stirring blade is connected to a scraper assembly. Driven by the mixing assembly, the scraper assembly can force the elastic part to stretch by centrifugal force until the scraper scrapes the material adhering to the side wall to make it participate in the mixing, avoiding material loss and increasing the difficulty of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 Schematic diagram of the internal structure of the premixing device;

[0023] Figure 3 It is a schematic diagram of the internal structure of the mixing tank;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the mixing tank;

[0025] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0026] The marks in the figure are:

[0027] 1. Mixing tank; 2. Stirring assembly; 3. Premixing device; 4. Whitening agent delivery pipeline; 5. Pulp delivery pipeline; 6. Premixing cylinder; 7. Delivery pipeline; 8. Premixing assembly; 9. First hydraulic rod; 10. Output rod; 11. First mixing plate; 12. Flow channel; 13. Second mixing plate; 14. First motor; 15. Stirring rod; 16. Stirring blade; 17. Scraping assembly; 18. Scraper; 19. Sliding column; 20. Chute; 21. Elastic member; 22. Conical structure; 23. Discharge pipeline; 24. Discharge valve; 25. First control valve; 26. Second control valve. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] First embodiment:

[0034] like Figure 1-Figure 5 As shown, this embodiment provides an auxiliary feeding equipment for whitening agent of pulp raw material, including a mixing tank 1, a stirring component 2 is provided in the mixing tank 1, a premixing device 3 is connected to the mixing tank 1 pipeline, the premixing device 3 is connected to the whitening agent delivery pipeline 4 and the pulp delivery pipeline 5, and the premixing device 3 is provided with a premixing component 8 for preliminary mixing of the whitening agent and the pulp.

[0035] The pulp raw materials and whitening agents to be mixed are fed into the pre-mixing device 3 in equal proportions, the pre-mixing component 8 performs preliminary mixing of the input pulp raw materials and whitening agents, and then the pre-mixed pulp raw materials and whitening agents are transported to the mixing tank 1 through a pipeline, and the stirring component 2 in the mixing tank 1 fully mixes them. The pre-mixing device 3 performs preliminary mixing of the pulp raw materials and whitening agents, which can ensure that the two have a certain contact and dispersion before entering the mixing tank 1, which is conducive to the subsequent sufficient mixing in the mixing tank 1. In the mixing tank 1, the stirring component 2 further fully mixes the pre-mixed materials, so that the whitening agent can be more evenly distributed in the pulp, thereby improving the whiteness and appearance quality of the paper.

[0036] like Figure 1 As shown, the premixing device 3 includes a premixing cylinder 6, which is connected to the whitening agent delivery pipeline 4 and the pulp delivery pipeline 5. The bottom of the premixing cylinder 6 is connected to the material delivery pipeline 7, and the pipelines are all provided with control valves for control. A premixing component 8 is provided in the premixing device 3, and the premixing component 8 can drive the materials in the premixing cylinder 6 to mix.

[0037] The whitening agent delivery pipe 4 is connected to the first control valve 25, the pulp delivery pipe 5 is connected to the second control valve 26, and a third control valve for controlling the delivery pipe 7 is provided at the bottom of the mixing drum to control the whitening agent and pulp raw materials in equal proportions to enter the mixing drum, undergo preliminary mixing with the mixing assembly, and then enter the mixing tank 1 through the delivery pipe 7 for the next step of sufficient mixing.

[0038] like Figure 2 As shown, the premixing assembly 8 includes a first hydraulic rod 9 fixedly arranged on the top of the premixing cylinder 6. The output rod 10 of the first hydraulic rod 9 passes through the top of the cylinder and enters the premixing cylinder 6. The end of the output rod 10 is fixedly connected to a first mixing plate 11.

[0039] The first mixing plate 11 abuts against the inner wall of the pre-mixing cylinder 6 , and a plurality of flow channels 12 are formed on the first mixing plate 11 .

[0040] The flow channels 12 are arranged in a circumferential array through the first mixing plate 11. The first mixing plate 11 can reciprocate along the height direction of the cylinder under the drive of the first hydraulic rod 9. The material can be squeezed and pass through the flow channels 12, which has a good pre-mixing effect.

[0041] The second mixing plate 13 is also included. The second mixing plate 13 is arranged above the first mixing plate 11 in parallel and fixedly connected to the output rod 10. The flow channels 12 on the second mixing plate 13 and the first mixing plate 11 are staggered.

[0042] like Figure 3 and Figure 4As shown, the mixing assembly includes a first motor 14 fixedly arranged on the top of the mixing tank 1, and the output end of the first motor 14 passes through the mixing tank 1 and is connected to a stirring rod 15, which extends to the bottom of the mixing tank 1. The stirring rod 15 is arrayed along the length direction with stirring blades 16 extending radially along the tank body.

[0043] The lower end of the mixing tank 1 is a conical structure 22, and the bottom of the tank is provided with a discharge pipe 23 connected thereto, which is controlled by a discharge valve 24. This ensures that the mixed material is discharged smoothly and avoids the material being retained in the mixing roller.

[0044] Second embodiment:

[0045] This embodiment provides an auxiliary feeding device for a whitening agent for pulp raw materials. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0046] like Figure 4 and Figure 5 As shown, the stirring blade 16 is connected to a wall scraping assembly 17. Driven by the mixing assembly, the wall scraping assembly 17 can move outward along the radial direction of the mixing tank 1 to scrape the material adhered to the side wall of the tank body.

[0047] The scraper assembly 17 includes a scraper 18 , which is connected to a slide post 19 . The slide post 19 is slidably disposed in a chute 20 defined by the mixing blade 16 . The slide post 19 is elastically connected to the bottom wall of the chute 20 via an elastic member 21 .

[0048] The stirring blade 16 rotates to mix the material in the tank, and the scraper assembly 17 is driven to rotate. The centrifugal force forces the elastic member 21 to stretch until the scraper 18 scrapes the material adhering to the side wall to make it participate in the mixing, avoiding material loss and increasing the difficulty of cleaning.

[0049] 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. An auxiliary feeding device for pulp raw material whitening agent, characterized in that: The invention comprises a mixing tank (1), wherein a stirring assembly (2) is provided in the mixing tank (1), a pre-mixing device (3) is connected to a pipeline of the mixing tank (1), the pre-mixing device (3) is connected to a whitening agent delivery pipeline (4) and a pulp delivery pipeline (5), and the pre-mixing device (3) is provided with a pre-mixing assembly (8) for preliminarily mixing the whitening agent and the pulp; The premixing device (3) includes a premixing cylinder (6), the premixing cylinder (6) is connected to a whitening agent delivery pipeline (4) and a pulp delivery pipeline (5), the bottom of the premixing cylinder (6) is connected to a material delivery pipeline (7), and both pipelines are provided with control valves for control. A premixing component (8) is provided in the premixing device (3), and the premixing component (8) can drive the materials in the premixing cylinder (6) to mix; The premixing assembly (8) comprises a first hydraulic rod (9) fixedly arranged on the top of the premixing cylinder (6); an output rod (10) of the first hydraulic rod (9) passes through the top of the cylinder and enters the premixing cylinder (6); and a first mixing plate (11) is fixedly connected to the end of the output rod (10); The first mixing plate (11) is in contact with the inner wall of the pre-mixing cylinder (6), and a plurality of flow channels (12) are provided on the first mixing plate (11); The invention also includes a second mixing plate (13), which is arranged above the first mixing plate (11) in parallel and fixedly connected to the output rod (10), and the flow channels (12) on the second mixing plate (13) and the first mixing plate (11) are arranged in an alternating manner.

2. The auxiliary feeding device for pulp raw material whitening agent according to claim 1, characterized in that: The mixing assembly comprises a first motor (14) fixedly arranged on the top of the mixing tank (1); an output end of the first motor (14) passes through the mixing tank (1) and is connected to a stirring rod (15); the stirring rod (15) extends toward the bottom of the mixing tank (1); and stirring blades (16) are arranged in an array along the length direction of the stirring rod (15) and extend radially along the tank body.

3. The auxiliary feeding device for pulp raw material whitening agent according to claim 2, characterized in that: The stirring blade (16) is connected to a wall scraping assembly (17). Driven by the mixing assembly, the wall scraping assembly (17) can remove materials adhering to the side wall of the mixing tank (1) outward in a radial direction to scrape the materials.

4. The auxiliary feeding device for whitening agent of pulp raw material according to claim 3, characterized in that: The wall scraping assembly (17) includes a scraper (18), the scraper (18) is connected to a slide column (19), the slide column (19) is slidably arranged in a slide groove (20) opened by the stirring blade (16), and the slide column (19) is elastically connected to the bottom wall of the slide groove (20) through an elastic member (21).

5. The auxiliary feeding device for whitening agent of pulp raw material according to claim 1, characterized in that: The lower end of the mixing tank (1) is a conical structure (22), and a discharge pipe (23) is provided at the bottom of the tank, and the discharge pipe (23) is controlled by a discharge valve (24).

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