Fiber filter in paper pulp system

Abstract

The utility model relates to the technical field of paper pulp molding, in particular to a fiber filter in a paper pulp system, which comprises a support, a filter box body is arranged on the support, a waste pulp backflow box body is arranged at the front end of the filter box body, a box opening is arranged at the front end of the filter box body, and the waste pulp backflow box body is arranged in the box opening. A first filter screen, a second filter screen and a third filter screen which are obliquely arranged towards the box opening are sequentially installed on the inner side of the filter box body from top to bottom, the front end of the third filter screen is located above the waste slurry backflow box body, and a slurry inlet pipe is installed on the side face of the filter box body. The first filter screen, the second filter screen and the third filter screen are arranged to filter paper fibers in pulp, manual fishing operation is not needed, time and labor are saved, efficiency is high, and the purpose of recycling water can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper pulp molding, in particular to a fiber filter in a paper pulp system. Background Art

[0002] Pulp molding, also known as three-dimensional papermaking, uses pulp as raw material and forms a molded product with a certain shape on a molding machine using a special mold. Pulp molding has the advantages of renewable raw materials, convenient transportation, and green environmental protection. It is mainly used for lunch boxes, tableware, product trays, etc. Pulp molded products need to go through the processes of raw material beating-batch-molding-hot pressing and shaping during production. Each time the pulp is molded, the lower mold must be vacuumed, and a large amount of slurry (containing a small amount of paper fiber) needs to flow back to the white water pool to achieve the purpose of recycling water. However, the paper fibers in the slurry need to be removed to prevent them from accumulating in the white water pool. Most of the existing removal operations use manual salvage to salvage the paper fibers, which is time-consuming, labor-intensive, and inefficient. Therefore, it is necessary to set up an efficient fiber filter to remove the paper fibers. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a fiber filter in a pulp system is provided, which filters the paper fibers in the slurry by setting a first filter screen, a second filter screen and a third filter screen, does not require manual salvage operations, saves time and effort, and has high efficiency, and can achieve the purpose of recycling water.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A fiber filter in a pulp system comprises a bracket, a filter box is arranged on the bracket, a waste pulp return box is arranged at the front end of the filter box, a box opening is opened at the front end of the filter box, a first filter screen, a second filter screen and a third filter screen which are arranged obliquely toward the box opening are installed in sequence on the inner side of the filter box from top to bottom, the front end of the third filter screen is located above the waste pulp return box, and a pulp inlet pipe is installed on the side of the filter box.

[0006] Preferably, a first grid frame, a second grid frame and a third grid frame are installed in the filter box, and the first filter screen, the second filter screen and the third filter screen are installed on the first grid frame, the second grid frame and the third grid frame respectively.

[0007] Preferably, a filter box cover is installed above the filter box body, and a waste slurry outlet is opened at the front bottom of the waste slurry return box body.

[0008] Preferably, a first pull plate and a second pull plate respectively connected to the first filter screen and the second filter screen are installed on the back of the filter box, and handles are installed on the first pull plate and the second pull plate.

[0009] Preferably, a filter receiving tray is installed at the front end of the third filter screen, and the front end of the filter receiving tray extends out of the box opening.

[0010] Preferably, a slurry return port and a sewage discharge port are provided at the bottom of the back side of the filter box.

[0011] By adopting the above technical scheme, the utility model provides a fiber filter in a pulp system, which has the following beneficial effects: a waste pulp return box is arranged at the front end of the filter box in the fiber filter, a box opening is opened at the front end of the filter box, a first filter screen, a second filter screen and a third filter screen which are arranged obliquely toward the box opening are sequentially installed on the inner side of the filter box from top to bottom, the front end of the third filter screen is located above the waste pulp return box, a pulp inlet pipe is installed on the side of the filter box, the slurry is connected to the filter box through the pulp inlet pipe, and then filtered through the first filter screen, the second filter screen and the third filter screen respectively, the paper fibers in the slurry are retained on the above filter screens, the water in the slurry falls into the bottom of the filter box through the filter screens, and finally can be connected to the white water pool from the bottom pulp pool, while the slurry that has not been filtered in time can flow into the waste pulp return box, and finally can be connected back to the waste pulp pool, by setting the first filter screen, the second filter screen and the third filter screen to filter the paper fibers in the slurry, no manual salvage operation is required, time and labor are saved, and the efficiency is high, and the purpose of recycling water can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 A three-dimensional diagram of the present invention from another angle;

[0014] Figure 3 It is the front view of the utility model;

[0015] Figure 4 It is a rear view of the utility model;

[0016] Figure 5 It is a cross-sectional view of the utility model;

[0017] In the figure, 1- bracket, 2- filter box, 3- waste slurry return box, 4- box opening, 5- first filter screen, 6- second filter screen, 7- third filter screen, 8- slurry inlet pipe, 9- first grid, 10- second grid, 11- third grid, 12- filter box cover, 13- waste slurry outlet, 14- first pull plate, 15- second pull plate, 16- handle, 17- filter receiving tray, 18- slurry return port, 19- sewage outlet. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] like Figure 1-5 As shown, the fiber filter in the paper pulp system includes a bracket 1, a filter box 2 is arranged on the bracket 1, a waste pulp return box 3 is arranged at the front end of the filter box 2, a box opening 4 is opened at the front end of the filter box 2, and a first filter screen 5, a second filter screen 6 and a third filter screen 7 are installed on the inner side of the filter box 2 from top to bottom, which are tilted toward the box opening 4. The front end of the third filter screen 7 is located above the waste pulp return box 3, and a pulp inlet pipe 8 is installed on the side of the filter box 2. It can be understood that the first filter screen 5, the second filter screen 6 and the third filter screen 7 are 40 mesh stainless steel nets, 60 mesh stainless steel nets and 120 mesh stainless steel nets respectively; the bracket 1, the filter box 2 and the waste pulp return box 3 can all be made of stainless steel, etc.

[0022] Specifically, a first grid 9, a second grid 10 and a third grid 11 are installed in the filter box 2, and the first filter screen 5, the second filter screen 6 and the third filter screen 7 are installed on the first grid 9, the second grid 10 and the third grid 11 respectively; a filter box cover 12 is installed on the top of the filter box 2, and a waste pulp outlet 13 is opened at the front bottom of the waste pulp return box 3; a first pull plate 14 and a second pull plate 15 connected to the first filter screen 5 and the second filter screen 6 respectively are installed on the back of the filter box 2, and a handle 16 is installed on the first pull plate 14 and the second pull plate 15; a filter receiving plate 17 is installed at the front end of the third filter screen 7, and the front end of the filter receiving plate 17 extends out of the box port 4; a return pulp port 18 and a sewage outlet 19 are opened at the back bottom of the filter box 2. It can be understood that the slurry returned from the slurry box flows in from the slurry inlet pipe 8 at the upper right of the filter box 2, and the slurry passes through the first filter screen 5, the second filter screen 6 and the third filter screen 7 respectively, and the paper fibers in the slurry remain on the above-mentioned filter screens, and the water in the slurry falls into the slurry pool at the bottom of the filter box 2, and finally can be connected to the white water pool from the bottom slurry pool; and the slurry that has not been filtered in time can flow into the waste slurry return box 3, and finally can be connected back to the waste slurry pool, and then connected to the slurry inlet pipe 8 for re-filtration. When the first filter screen 5 and the second filter screen 6 need to be cleaned, the filter screens can be directly pulled out from the back to clean out the accumulated paper fibers, which is convenient for disassembly and maintenance.

[0023] It can be understood that the utility model has a reasonable design and a unique structure. By setting the first filter screen 5, the second filter screen 6 and the third filter screen 7 to filter the paper fibers in the slurry, no manual salvage operation is required, which saves time and effort, and has high efficiency, and can achieve the purpose of recycling water.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A fiber filter in a pulp system, comprising a support, a filter box is arranged on the support, a waste pulp return box is arranged at the front end of the filter box, and the characteristics are: A box opening is provided at the front end of the filter box body, and a first filter screen, a second filter screen and a third filter screen are installed in sequence on the inner side of the filter box body from top to bottom, and the front end of the third filter screen is located above the waste pulp return box body, and a pulp inlet pipe is installed on the side of the filter box body.

2. The fiber filter in the pulp system according to claim 1, characterized in that: A first grid frame, a second grid frame and a third grid frame are installed in the filter box, and the first filter screen, the second filter screen and the third filter screen are installed on the first grid frame, the second grid frame and the third grid frame respectively.

3. The fiber filter in the pulp system according to claim 1, characterized in that: A filter box cover is installed above the filter box body, and a waste slurry outlet is opened at the front bottom of the waste slurry return box body.

4. The fiber filter in the pulp system according to claim 1, characterized in that: A first pull plate and a second pull plate connected to the first filter screen and the second filter screen respectively are installed on the back of the filter box, and handles are installed on the first pull plate and the second pull plate.

5. The fiber filter in the pulp system according to claim 1, characterized in that: A filter receiving tray is installed at the front end of the third filter screen, and the front end of the filter receiving tray extends out of the box opening.

6. The fiber filter in the pulp system according to claim 1, characterized in that: The bottom of the back side of the filter box is provided with a slurry return port and a sewage discharge port.

Images