Paper covering device

Abstract

The utility model discloses a paper covering device which comprises at least two roller bodies, the two roller bodies are parallel to each other and abut against each other, so that a material storage groove is formed between the two roller bodies, and the material storage groove can cover paper clamped between the two roller bodies. The device has the beneficial effects that the device can be used for dyeing paper, does not interfere with the production process of raw paper, only needs to clean individual devices even if coloring agents with other colors need to be replaced in the production process, is shorter in cleaning time and is beneficial to keeping the smoothness of production. And moreover, the cleaning water is greatly reduced, the capital investment for subsequent sewage treatment is also greatly reduced, and the production benefit is favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper production technical field, especially a paper coating device. BACKGROUND

[0002] In the existing paper production process, when producing color paper, pulp and dyeing agent need to be mixed in water, and then papermaking is carried out for subsequent processing. This form of producing color paper at least has the following disadvantages: 1. The dyeing agent will dye multiple devices in the production equipment during production, and if another color of paper needs to be produced, the entire production line needs to be stopped and cleaned first; 2. A large amount of water is needed to clean the production line, and the sewage after cleaning the equipment needs to be treated to meet environmental protection requirements, which requires a large amount of investment; 3. The energy consumption of the production line is too large. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a paper coating device, which aims to solve at least one of the above-mentioned problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides a paper coating device, which comprises at least two roller bodies, the two roller bodies are parallel to each other and abut each other to form a storage groove between the two roller bodies, and the storage groove can coat the paper clamped between the two roller bodies.

[0005] The paper coating device in the utility model can be used for dyeing paper, and does not interfere with the production process of base paper. Even if other color dyeing agents need to be replaced during production, only individual devices need to be cleaned, the cleaning time is shorter, and the production flow is maintained. Moreover, the amount of cleaning water is greatly reduced, the capital investment for subsequent sewage treatment is also greatly reduced, and the production efficiency is improved.

[0006] Preferably, the paper coating device further comprises at least two baffles; the two baffles are arranged between the two roller bodies and close to both ends of the storage groove, and the two roller bodies abut the baffles, or the two baffles are arranged at both ends of the storage groove and abut the ends of the roller bodies to block the liquid agent in the storage groove, which is beneficial to the full coating of the paper.

[0007] Preferably, the paper coating device further comprises at least two return grooves, and the two return grooves are arranged on the lower side of the two baffles to receive the liquid agent overflowing from the storage groove to the baffles, which is beneficial to maintaining the liquid level and maintaining the normal coating process.

[0008] Preferably, the paper coating device further comprises a feeding device, the feeding device comprises a liquid agent storage and a feeding pipe assembly, and an outlet of the feeding pipe assembly faces the sidewall of the storage tank or the storage tank, so as to facilitate the stability of the coating process and improve the paper quality.

[0009] Preferably, the feeding pipe assembly comprises at least two feeding branches, and the two feeding branches are respectively located above the two sides of the storage tank.

[0010] Preferably, a plurality of discharge pipes are arranged on the feeding branch, and a discharge port of the discharge pipe faces the sidewall of the storage tank, so as to reduce the fluctuation degree of the liquid surface of the storage tank, keep the liquid surface stable, improve the coating effect, and improve the paper quality.

[0011] Preferably, a discharge tank is arranged on the feeding branch, and the discharge tank extends along the extension direction of the storage tank, so that the liquid agent forms a continuous waterfall during the discharging process, the page is kept stable, the coating effect is further improved, and the paper quality is improved.

[0012] Preferably, a feeding pump and a feeding valve assembly are arranged on the feeding pipe assembly, the feeding valve assembly can control the discharging of one feeding branch or the simultaneous discharging of two feeding branches, so that the paper coating device can perform single-sided coating or double-sided coating, and the application range of the paper coating device is expanded.

[0013] Preferably, the roller body comprises an outer layer, and the outer layer of at least one roller body is made of an elastic material, so that the two roller bodies can clamp the paper more tightly.

[0014] Preferably, the diameter D of the roller body is 150mm-1500mm. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0016] Figure 1 FIG. 1 is a structural schematic view of two roller bodies and a storage tank in an embodiment of the present application;

[0017] Figure 2 FIG. 2 is a structural schematic view of two roller bodies and a feeding branch in an embodiment of the present application;

[0018] Figure 3It is the structural schematic view of the roller body, the baffle and the material return groove in the embodiment of the utility model;

[0019] Figure 4 It is the schematic view of the material outlet of the material conveying branch pipe provided with the material storage groove in the embodiment of the utility model;

[0020] Figure 5 It is the structural schematic view of the paper material coating device in the embodiment of the utility model;

[0021] Figure 6 It is the structural schematic view of the roller body in the embodiment of the utility model;

[0022] Figure 7 It is the schematic view of the paper, the roller body, the material storage groove and the liquid material agent when coating on both sides in the embodiment of the utility model;

[0023] Figure 8 It is the schematic view of the paper, the roller body, the material storage groove and the liquid material agent when coating on one side in the embodiment of the utility model;

[0024] Figure 9 It is the structural schematic view of the two roller bodies in the embodiment of the utility model in the oblique column distribution.

[0025] In the drawing, 1 is a roller body, 11 is an outer layer, 2 is a material storage groove, 21 is a material storage sub-groove, 3 is a baffle, 4 is a material return groove, 41 is a material return vibrating screen, 42 is a material return pipe assembly, 51 is a material agent storage body, 52 is a material conveying pipe assembly, 521 is a material conveying branch pipe, 5211 is a material outlet pipe, 5212 is a material outlet groove, 53 is a material conveying valve assembly, 54 is a material feeding pump, 10 is paper, and 20 is a liquid material agent.

[0026] The realization, functional characteristics and advantages of the utility model will be further described by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below by combining with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be noted that if the embodiments of the utility model involve directional indications, such as up, down, left, right, front, back and the like, the directional indications are only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0030] As shown in Figures 1 to 9 A paper coating device comprises at least two roller bodies 1, the two roller bodies 1 are parallel and abut each other to form a storage tank 2 between the two roller bodies 1, and the storage tank 2 can coat the paper 10 clamped between the two roller bodies 1.

[0031] The paper coating device in the embodiment can be used for dyeing the paper 10, and does not interfere with the production process of the base paper. Even if other color dyeing agents need to be replaced during the production process, only individual devices need to be cleaned, the cleaning time is shorter, and the production flow is maintained. Moreover, the amount of cleaning water is greatly reduced, and the subsequent investment in sewage treatment is also greatly reduced, which is beneficial to improve the production efficiency.

[0032] The paper coating device in the embodiment is used for processing the already formed base paper. In actual production arrangement, the equipment for producing base paper and the paper coating device can be arranged in different factory buildings, and the power supply load of each factory building is relatively small; or the production time of the base paper and the coating of the paper 10 is staggered to avoid simultaneous power consumption. The production equipment in the prior art synchronously performs paper forming and dyeing, and the power consumption during production is too large, which can cause damage to the power supply system of the factory building and the equipment itself.

[0033] In some specific embodiments, referring to Figure 3 and Figure 5 The paper coating device further comprises at least two baffles 3; the two baffles 3 are arranged between the two roller bodies 1 and close to the two ends of the storage tank 2, and the two roller bodies 1 abut on the baffles 3, or the two baffles 3 are arranged at the two ends of the storage tank 2 and abut on the end portions of the roller bodies 1 to block the liquid agent 20 in the storage tank 2.

[0034] Specifically, the paper coating device further comprises a rack, and the two baffles 3 are arranged on the rack and between the two roller bodies 1, and the two baffles 3 are arranged along the extension direction of the storage tank 2. The two sides of the baffle 3 are arranged on the circular arc surface matched with the surface of the roller body 1, and the two roller bodies 1 respectively extrude the corresponding circular arc surface. The baffle 3 is made of elastic material to reduce the wear of the roller body 1.

[0035] The baffle 3 is arranged to store the liquid sizing agent 20 in the storage tank 2, so that the liquid sizing agent 20 can reach a certain liquid level in the storage tank 2, so that the paper 10 is more fully sized.

[0036] The liquid sizing agent 20 in the embodiment can be a dyeing agent or a liquid containing a water-resistant agent.

[0037] In some specific embodiments, referring to Figure 5 The paper sizing device further comprises at least two return tanks 4 arranged on the lower side of the two baffles 3 to receive the liquid sizing agent 20 overflowing the baffle 3 from the storage tank 2.

[0038] In the embodiment, the liquid level height is controlled by the baffle 3. Different specifications of the baffle 3 are arranged between the two roller bodies 1 according to different paper 10 sizing requirements. During sizing, the liquid sizing agent 20 such as a dyeing agent is added to the storage tank 2 until the liquid sizing agent 20 overflows from the upper side of the baffle 3. During the sizing process, the liquid sizing agent 20 is continuously added to the storage tank 2, so that the liquid sizing agent 20 in the storage tank 2 is always in an overflowing state to maintain a fixed liquid level height.

[0039] The return tank 4 is arranged on the lower side of the baffle 3 to control the liquid level height in the storage tank 2 and also to recycle the overflowing liquid sizing agent 20. Specifically, the paper sizing device further comprises a return vibrating screen 41 and a return pipe assembly 42, and the return tank 4 and the return vibrating screen 41 and the sizing agent storage body 51 are connected to each other through the return pipe assembly 42, so that the liquid sizing agent 20 overflowing from the storage tank 2 can flow back to the sizing agent storage body 51 through the return tank 4, the return vibrating screen 41 and the return pipe assembly 42 for recycling.

[0040] After passing through the roller body 1 and the paper 10, part of the liquid sizing agent 20 will adhere to the paper 10, and the other part will flow to the return vibrating screen 41 with impurities on the paper 10 and the roller body 1. The return vibrating screen 41 is arranged to screen the impurities in the liquid sizing agent 20 flowing out of the storage tank 2, and then the clean liquid sizing agent 20 is flowed back to the sizing agent storage body 51 to ensure the effect and quality of the paper 10 sizing.

[0041] In some other embodiments, when the baffle 3 corresponds to a sensor, the sensor can be a hydraulic sensor or a visual sensor, which can monitor the liquid level height in the storage tank 2 in real time, dynamically adjust the liquid level height, and also play a role in controlling the liquid level height.

[0042] In some specific embodiments, referring to Figure 5The paper coating device further comprises a feeding device, the feeding device comprises a feeding agent storage body 51 and a feeding pipe assembly 52, and an outlet of the feeding pipe assembly 52 faces the storage tank 2 or a side wall of the storage tank 2, so as to deliver the liquid feeding agent 20 into the storage tank 2.

[0043] The feeding device is arranged to facilitate continuous feeding of the storage tank 2, maintain the liquid level of the liquid feeding agent 20 in the storage tank 2, and improve the processing stability during the coating process and the paper quality.

[0044] In some embodiments, referring to Figure 2 , Figure 4 and Figure 5 , the feeding pipe assembly 52 comprises at least two feeding branch pipes 521, and the two feeding branch pipes 521 are respectively arranged above two sides of the storage tank 2, and during the coating process, the two feeding branch pipes 521 are respectively arranged on two sides of the paper 10.

[0045] During the coating process, the paper 10 is clamped between the two roller bodies 1, and the paper 10 divides the storage tank 2 into two storage sub-tanks 21. The two feeding branch pipes 521 are arranged above two sides of the storage tank 2, that is, one feeding branch pipe 521 is arranged corresponding to each storage sub-tank 21. In this way, the two surfaces of the paper 10 can be dyed.

[0046] In another embodiment, the feeding pipe assembly 52 comprises only one feeding branch pipe 521, and during the coating process, the feeding branch pipe 521 is arranged on one side of the paper 10 to feed one of the storage sub-tanks 21 and coat one surface of the paper 10.

[0047] In some embodiments, referring to Figure 2 and Figure 5 , a plurality of discharge pipes 5211 are arranged on the feeding branch pipe 521, and discharge outlets of the discharge pipes 5211 face the side wall of the storage tank 2.

[0048] The discharge pipes 5211 are arranged, and the discharge pipes 5211 of the discharge pipes 5211 face the side wall of the storage tank 2, so that the liquid feeding agent 20 flowing out of the discharge pipes 5211 first reaches the side wall of the storage tank 2, that is, the outer surface of the roller body 1, and then flows into the storage tank 2, which can reduce the fluctuation degree of the liquid surface in the storage tank 2, maintain the stability of the liquid surface, and improve the coating processing effect, thereby improving the paper quality.

[0049] Further, each discharge pipe 5211 is provided with a discharge valve, and by adjusting the discharge valves on each discharge pipe 5211, the flow and flow rate of the liquid feeding agent flowing out of each discharge pipe 5211 are substantially the same, which is beneficial to uniform coating of the paper 10.

[0050] In some embodiments, referring toFigure 4 The feeding branch 521 is provided with a discharging groove 5212, which extends along the extension direction of the storage groove 2, so that the liquid material 20 is discharged in a continuous waterfall shape.

[0051] In this way, even if the liquid material 20 directly flows into the storage groove 2 from the discharging groove 5212, it will not cause excessive fluctuation of the liquid level of the liquid material 20 in the storage groove 2, and it is more conducive to maintaining the stability of the liquid level, further improving the coating processing effect and improving the paper quality.

[0052] In one embodiment, the material storage body 51, the feeding branch 521 and the discharging groove 5212 are arranged in sequence from top to bottom. The liquid material 20 in the material storage body 51 flows to the feeding branch 521 through the long-strip-shaped opening. The feeding branch 521 is provided with long-strip-shaped openings on the upper side and the lower side. The long-strip-shaped opening on the upper side is in communication with the long-strip-shaped opening of the material storage body 51, and the long-strip-shaped opening on the lower side is in communication with the discharging groove 5212. The lower side of the discharging groove 5212 is provided with a long-strip-shaped opening, which faces the storage groove 2.

[0053] Further, the widths of the long-strip-shaped opening of the material storage body 51, the long-strip-shaped opening on the upper side of the feeding branch 521, the long-strip-shaped opening on the lower side of the feeding branch 521 and the long-strip-shaped opening of the material storage body 51 decrease in sequence, which is conducive to making the liquid material flowing out of the long-strip-shaped opening of the material storage body 51 more uniform.

[0054] In some specific embodiments, referring to Figure 5 The feeding pipe assembly 52 is provided with a feeding pump 54 and a feeding valve assembly 53, and the feeding valve assembly 53 can control the discharging of one feeding branch 521 or the simultaneous discharging of two feeding branches 521.

[0055] The feeding valve assembly 53 is arranged, and the discharging of one feeding branch 521 or the simultaneous discharging of two feeding branches 521 is controlled, so that the paper coating device can not only perform single-sided coating processing, referring to Figure 8 but also can perform double-sided coating processing, referring to Figure 7 which is conducive to expanding the application range of the paper coating device.

[0056] Further, the feeding device includes a plurality of material storage bodies 51, and through the feeding pipe assembly 52 and the feeding valve assembly 53, when the liquid material 20 in one material storage body 51 is used up, another material storage body 51 can be switched to provide the liquid material 20 for the storage groove 2, so that the feeding can be continuously performed, and the coating processing can be continuously and stably performed. In addition, different colors of dyes can be stored in different material storage bodies 51, different colors of dyes can be transported through the two storage grooves 21, and different colors can be dyed on the two sides of the paper 10.

[0057] In some specific embodiments, reference is made to Figure 6 The roller body 1 includes an outer layer 11, and at least one outer layer 11 of the roller body 1 is made of an elastic material.

[0058] At least one roller 1 has an outer layer 11 made of an elastic material, which can enhance the clamping ability of the two rollers 1 on the paper 10, which is beneficial to increase the force-bearing area of ​​the paper, remove excess water, and make the moisture in the paper more uniform. It also enables the two rollers 1 to clamp the paper 10 more tightly.

[0059] After the paper 10 is coated in the storage tank 2, it will pass between the two rollers 1 under the rotation of the two rollers 1. After being squeezed by the two rollers 1, the excess liquid material 20 on the paper 10 will be squeezed out, which will also help the liquid material 20 to adhere better to the paper 10, so that the paper 10 can absorb the liquid material 20 more fully.

[0060] Furthermore, the material used for the outer layer 11 of the roller body 1 has the property of not sticking to the liquid agent 20, which is beneficial to improving the utilization rate of the liquid agent 20 and also facilitates the cleaning of the equipment.

[0061] In addition, the clamping force of the two rollers 1 on the paper 10 can be adjusted by adjusting the distance between the axes of the two rollers 1 according to different needs.

[0062] In some specific embodiments, the diameter D of the roller body 1 is 150mm to 1500mm.

[0063] Different coating processing requirements may necessitate different liquid levels in the storage tank 2. The diameter of the roller 1 is a crucial factor in determining the liquid level. Specifically, with two rollers 1 arranged horizontally, assuming a roller diameter D of 1000mm, the maximum liquid level in the side storage tank 2 is approximately 500mm. Rollers 1 of different diameters are selected based on varying coating processing requirements.

[0064] In another embodiment, reference is made to... Figure 9 The two rollers are arranged diagonally, which facilitates operations such as paper feeding by the staff.

[0065] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A paper covering apparatus characterized by: The application relates to a paper coating device, which comprises at least two roller bodies (1), the two roller bodies (1) are parallel to each other and abut each other to form a storage groove (2) between the two roller bodies (1), and the storage groove (2) can coat paper (10) clamped between the two roller bodies (1).

2. The paper covering apparatus of claim 1, wherein: The application further comprises at least two baffles (3), the two baffles (3) are arranged between the two roller bodies (1) and are close to two ends of the storage groove (2), the two roller bodies (1) abut the baffles (3), or the two baffles (3) are arranged at the two ends of the storage groove (2) and abut the ends of the roller bodies (1) to block liquid material (20) in the storage groove (2).

3. The paper covering apparatus of claim 2, wherein: The application further comprises at least two return grooves (4), the two return grooves (4) are arranged at the lower sides of the two baffles (3) to receive the liquid material (20) overflowing the baffles (3) from the storage groove (2).

4. The paper covering apparatus of claim 1, wherein: The application further comprises a feeding device, the feeding device comprises a material storage body (51) and a material conveying pipe assembly (52), and the outlet of the material conveying pipe assembly (52) faces the storage groove (2) or the side wall of the storage groove (2) to convey liquid material (20) into the storage groove (2).

5. The paper covering apparatus of claim 4, wherein: The material conveying pipe assembly (52) comprises at least two material conveying branch pipes (521), the two material conveying branch pipes (521) are arranged above the two sides of the storage groove (2) respectively, and when coating, the two material conveying branch pipes (521) are arranged on the two sides of the paper (10) respectively.

6. The paper covering apparatus of claim 5, wherein: A plurality of material outlet pipes (5211) are arranged on the material conveying branch pipe (521), and the material outlet of the material outlet pipe (5211) faces the side wall of the storage groove (2).

7. The paper covering apparatus of claim 5, wherein: A material outlet groove (5212) is arranged on the material conveying branch pipe (521), the material outlet groove (5212) extends along the extension direction of the storage groove (2), so that when discharging, the liquid material (20) is in continuous waterfall shape.

8. The paper covering apparatus of claim 5, wherein: A feeding pump (54) and a material conveying valve assembly (53) are arranged on the material conveying pipe assembly (52), the material conveying valve assembly (53) can control the discharging of one of the material conveying branch pipes (521) or the simultaneous discharging of the two material conveying branch pipes (521).

9. The paper covering apparatus of claim 1, wherein: The roller body (1) comprises an outer layer (11), and the outer layer (11) of at least one roller body (1) is made of elastic material.

10. The paper covering apparatus of claim 1 or 9, wherein: The diameter D of the roller body (1) is 150mm-1500mm.

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