Glassine paper tail pulp recycling device

Abstract

The utility model discloses a glassine tail pulp recycling device which comprises a tank body, and a conical separation tank, a pulp stabilizing platform and a good pulp tank are arranged in the tank body; the side part of the conical separation tank is provided with a tail slurry inlet, and the bottom is provided with a slurry residue discharge port; the top of the conical separation tank is in overflow connection with a slurry stabilizing table, the slurry stabilizing table is connected with an accepted slurry tank, the side part of the accepted slurry tank is provided with an accepted slurry outlet, and the bottom of the accepted slurry tank is provided with a cleaning drain outlet. According to an existing three-section desander of the glassine paper machine, slag pulp is directly discharged and lost, a tail pulp discharging pipe of the third-section desander is connected with a tail pulp recycling device, and heavy impurities are further separated through a conical separating groove. And the light accepted pulp, the high-quality filler and the like return to a pulp inlet of the second-section sand remover through a pulp stabilizing table, an accepted pulp tank, an accepted pulp outlet and the like to be further recycled. By utilizing the device which is simple and easy to manufacture, the tail pulp discharge amount of the glassine paper is greatly reduced, the total retention of pulp and filler is improved, the water consumption is obviously reduced, the manufacturing cost of the glassine paper is reduced, and meanwhile, the wastewater discharge is reduced.

Description

Technical Field

[0001] This utility model pertains to papermaking process equipment, specifically relating to a glassine paper tail pulp recycling device. Background Technology

[0002] Glassine paper, a type of self-adhesive release liner, is a special industrial paper. Its raw material is imported fresh pulp, resulting in relatively few impurities during production. The tailings slurry from the third-stage desander mainly consists of water, good pulp, fine filler particles, sand, and coarse filler particles. Water, good pulp, and fine filler particles can all be recycled for papermaking. However, in the desander design of paper machines, the tailings slurry from the third-stage desander is directly discharged into the paper machine's wastewater pipe, causing filler loss, high water consumption, and high pulp consumption in glassine paper production. With increasing market competition in the glassine paper industry, reducing production costs has become an urgent task for the production department. Utility Model Content

[0003] The technical problem to be solved and the technical task proposed by this utility model is to provide a glassine paper tail pulp recycling device to address the shortcomings of the above-mentioned sand separator design. The device of this application can further separate the light good pulp and fine filler from the heavy sand, coarse filler particles and other impurities in the tail pulp, and recycle water, good pulp and fine filler.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A glassine pulp recycling device includes:

[0006] The tank body contains a conical separation tank, a stabilizing platform, and a good slurry tank.

[0007] The main structure of the cone-shaped separation tank is an inverted cone-shaped tank. The side of the inverted cone-shaped tank is provided with a tail slurry inlet, and the bottom of the inverted cone-shaped tank is provided with a slurry discharge outlet.

[0008] The top overflow of the conical separation tank is connected to the stabilizing platform, which is then connected to the good slurry tank. The good slurry overflowing from the conical separation tank flows slowly into the good slurry tank through the stabilizing platform. The good slurry tank has a good slurry outlet in the middle or upper part of its side and a cleaning and drain outlet at the bottom.

[0009] Preferably, there are three tailings inlets, all located in the middle of the conical separation tank wall. The three tailings inlets are evenly spaced and each has a valve to adjust the flow rate. All three tailings inlets are installed along the tangential direction of the conical separation tank wall.

[0010] Preferably, the tank is rectangular in shape, with the slurry stabilizing platform located between the outer periphery of the conical separation tank and the inner wall of the tank. The top periphery of the conical separation tank is connected to the slurry stabilizing platform via an overflow bend.

[0011] Preferably, the tank has a rectangular structure. The good pulp tank includes a rectangular bottom plate and a sloping side plate. One side of the rectangular bottom plate is connected to the bottom edge of the sloping side plate, and the other three sides are respectively connected to a wide side wall and two long side walls of the tank away from the conical separation tank. The top edge of the sloping side plate is connected to the stabilizing platform, and the two sides of the sloping side plate are connected to the two long side walls of the tank, forming a trapezoidal tank that is wider at the top and narrower at the bottom, which is the good pulp tank.

[0012] Preferably, a valve is installed on the cleaning drain outlet, which is located at the bottom of the rectangular base plate of the slurry tank.

[0013] Preferably, the pulp outlet is located on the side wall of the pulp tank.

[0014] Preferably, the outlet height of the good pulp is lower than the height of the stabilizing platform, and it is equipped with a valve with adjustable flow rate.

[0015] As a preferred technical means: the tank is the main body of the device, and its size needs to be calculated and designed according to the maximum and minimum flow rates of the tailings. It can be placed directly on the ground for easy position adjustment.

[0016] As a preferred technical means, the stabilizing platform connects the conical separation tank and the good slurry tank, reducing the overflow flow rate of the good slurry and making the tail slurry recycling device a whole.

[0017] As a preferred technical means: the good pulp tank is connected after the pulp stabilization platform, and it includes a tank body, a good pulp outlet and a cleaning and sewage outlet.

[0018] The beneficial effects achieved by this utility model are:

[0019] This application utilizes the self-weight and centrifugal force generated by the rotation of the tail slurry along the tangential direction of the conical separation tank to further separate the light, high-quality pulp and fine fillers from the heavy sand, coarse filler particles, and other impurities in the tail slurry, thereby recycling water, high-quality pulp, and fine fillers. This reduces water and pulp consumption in glassine paper production, while increasing the total filler retention, lowering the production cost of glassine paper, and enhancing its market competitiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a vertical cross-section of the front structure of the glassine pulp recycling device of this utility model.

[0021] Figure 2 for Figure 1 Top view of the structure shown;

[0022] Figure 3 for Figure 1 Right view of the structure shown;

[0023] Explanation of the labels in the diagram:

[0024] 1-Tank body;

[0025] 2-Tail pouring inlet;

[0026] 3-Cone-shaped separation tank;

[0027] 4-Slurry stabilizing platform;

[0028] 5-Good slurry tank;

[0029] 6-Good pulp export;

[0030] 7-Slurry discharge outlet;

[0031] 8. Clean the drain outlet. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] like Figure 1-3 The glassine paper tail pulp recycling device shown includes: a tank 1, which is equipped with a conical separation tank 3, a pulp stabilizing platform 4, and a good pulp tank 5.

[0034] The main structure of the cone-shaped separation tank 3 is an inverted cone-shaped tank. The side of the inverted cone-shaped tank is provided with a tail slurry inlet 2, and the bottom of the inverted cone-shaped tank is provided with a slurry discharge outlet 7. A valve is provided on the slurry discharge outlet 7.

[0035] Tailings inlet 2 is located in the middle of the wall of the conical separation tank 3, and has three tailings inlets; the three tailings inlets 2 are evenly spaced and each has a valve to adjust the flow rate, and the three tailings inlets 2 are installed along the tangential direction of the wall of the conical separation tank.

[0036] The stabilizing platform 4 is connected to the overflow port of the conical separation tank 3 and the good slurry tank 5;

[0037] The good pulp tank 5 has a good pulp outlet 6 on the middle or upper part of its side and a cleaning and drain outlet 8 at the bottom.

[0038] Comparison Figures 1-3 In the middle, the tank body 1 has a rectangular structure, the slurry stabilizing platform 4 is set between the outer periphery of the conical separation tank 3 and the inner wall of the tank body 1, and the top periphery of the conical separation tank 3 is connected to the slurry stabilizing platform 4 through an overflow bend.

[0039] Additionally, the good pulp tank 5 includes a rectangular base plate and a sloping side plate. One side of the rectangular base plate is connected to the bottom edge of the sloping side plate, and the other three sides are respectively connected to a wide side wall and two long side walls of the tank body 1 away from the conical separation tank 3. The top edge of the sloping side plate is connected to the pulp stabilizing platform 4, and the two sides of the sloping side plate are connected to the two long side walls of the tank body 1, forming a trapezoidal tank that is wider at the top and narrower at the bottom, which is the good pulp tank 5. A valve is installed on the cleaning and drain outlet 8, which is located at the bottom of the rectangular base plate of the good pulp tank 5.

[0040] Comparison Figure 1 The height of the good slurry outlet 6 is lower than the height of the slurry stabilizing platform 4, and it is equipped with a valve with adjustable flow rate.

[0041] Furthermore, the tank body 1 is the main body of the device, and the slurry stabilizing platform 4 connects the conical separation tank 3, the tank body 1, and the good slurry tank 5 into a whole. The other end of the tail slurry inlet 2 is connected to the tail slurry outlet of the third-stage desander, and the tail slurry to be discharged is received. One end of the tail slurry inlet 2 is connected to the conical separation tank 3 along the tangential direction of the tank wall. The slurry stabilizing platform 4 collects the good slurry overflowing from the conical separation tank 3, reduces the flow rate of the good slurry, and the good slurry flows into the good slurry tank 5 along the slurry stabilizing platform 4. The good slurry enters the good slurry inlet of the second-stage desander through the good slurry outlet 6.

[0042] During operation, the tailings slurry from the third-stage desander enters the conical separation tank 3 tangentially. Utilizing the slurry's own gravity and the centrifugal force generated by its rotation, the light, high-quality slurry and fine filler are further separated from the heavy sand, coarse filler particles, and other impurities. The tailings slurry flow rate can be adjusted by regulating the opening of the tailings slurry inlet valve 2, thereby adjusting the centrifugal force and improving the separation effect. Heavy sand, coarse filler particles, and other impurities are periodically discharged through the slurry discharge outlet 7. The light, high-quality slurry and fine filler overflow with water, flowing through the slurry stabilizing platform 4 into the high-quality slurry tank 5. The flow rate of the high-quality slurry slows down after passing through the slurry stabilizing platform 4, preventing air from being introduced when it enters the high-quality slurry tank 5. The high-quality slurry outlet 6 is horizontally lower than the slurry stabilizing platform 4, ensuring that the liquid level of the high-quality slurry in the high-quality slurry tank 5 does not exceed the slurry stabilizing platform before discharge, guaranteeing a low slurry velocity and preventing sedimentation. The cleaning drain outlet 8 is used to discharge wastewater generated during routine tank cleaning.

[0043] This glassine pulp recycling system has the following advantages:

[0044] 1) It can automatically separate light high-quality slurry and fine filler from heavy sand, coarse filler particles and other impurities by utilizing the tail slurry velocity of the third-stage desander, without the need for additional slurry pumps or other power equipment.

[0045] 2) The entire device is simple to design and easy to manufacture, and it is an integrated device that occupies a small area.

Claims

1. A glassine pulp recycling device, characterized in that: include: The tank (1) is equipped with a conical separation tank (3), a stabilizing platform (4) and a good slurry tank (5). The main structure of the cone-shaped separation tank (3) is an inverted cone-shaped tank. The side of the inverted cone-shaped tank is provided with a tail slurry inlet (2), and the bottom of the inverted cone-shaped tank is provided with a slurry discharge outlet (7). The top overflow of the conical separation tank (3) is connected to the stabilizing platform (4), which is then connected to the good slurry tank (5). The good slurry overflowing from the conical separation tank (3) flows slowly into the good slurry tank (5) through the stabilizing platform (4). The good slurry tank (5) has a good slurry outlet (6) in the middle or upper part of its side and a cleaning and drain outlet (8) at the bottom.

2. The glassine pulp recycling device according to claim 1, characterized in that: The number of tail slurry inlets (2) is three, all located in the middle of the conical separation tank wall. The three tail slurry inlets (2) are evenly spaced and each has a valve to adjust the flow rate. The three tail slurry inlets (2) are installed along the tangential direction of the conical separation tank wall.

3. The glassine pulp recycling device according to claim 1, characterized in that: The tank (1) is a rectangular structure. The stabilizing platform (4) is located between the outer periphery of the conical separation tank (3) and the inner wall of the tank (1). The top periphery of the conical separation tank (3) is connected to the stabilizing platform (4) through an overflow bend.

4. A glassine pulp recycling device according to claim 1, characterized in that: The tank (1) is a rectangular structure. The good pulp tank (5) includes a rectangular bottom plate and a sloping plate. One side of the rectangular bottom plate is connected to the bottom edge of the sloping plate. The other three sides are respectively connected to a wide side wall and two long side walls of the tank (1) away from the conical separation tank (3). The top edge of the sloping plate is connected to the stabilizing platform (4). The two sides of the sloping plate are connected to the two long side walls of the tank (1), forming a trapezoidal tank that is wider at the top and narrower at the bottom, which is the good pulp tank (5).

5. A glassine pulp recycling device according to claim 4, characterized in that: A valve is installed on the cleaning drain (8), which is located at the bottom of the rectangular base plate of the slurry tank (5).

6. A glassine pulp recycling device according to claim 4, characterized in that: The good pulp outlet (6) is located on the side wall of the good pulp tank (5) located in the tank body (1).

7. A glassine pulp recycling device according to claim 1, characterized in that: The level of the good slurry outlet (6) is lower than that of the slurry stabilizing platform (4), and it is equipped with a valve with adjustable flow rate.

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