Paper pulp preparation device

Abstract

The utility model discloses a paper pulp preparation device which comprises a dissolving tank, a constant volume tank, a white water tank and a mixing and dissolving tank, the dissolving tank, the constant volume tank and the mixing and dissolving tank are respectively provided with a liquid outlet, the liquid outlet of the dissolving tank is communicated with the interior of the constant volume tank, a first valve is arranged at the communication position, the liquid outlet of the constant volume tank is communicated with the interior of the mixing and dissolving tank, and a second valve is arranged at the communication position. The white water tank is provided with a water outlet, the water outlet of the white water tank is communicated with the dissolving tank and the constant volume tank, a third valve is arranged at the communication position, a liquid outlet of the mixing and dissolving tank is communicated with the paper machine, a fourth valve is arranged at the communication position, and the dissolving tank is used for adding papermaking filler and white water for pre-dissolving to prepare a filler solution; the constant volume tank is used for adding a filler solution and white water to make the volume of the filler solution constant to a preset concentration, and the mixing and dissolving tank is used for adding papermaking fibers and the constant-volume filler solution and uniformly mixing to prepare paper pulp, so that the papermaking filler, the papermaking fibers and the white water can be conveniently and continuously uniformly mixed to obtain the paper pulp.

Description

TECHNICAL FIELD

[0001] The utility model belongs to papermaking technical field, especially relate to a paper pulp preparation device. BACKGROUND

[0002] The kraft paper can add the right amount of fly ash (as papermaking filler) in the paper pulp to improve the strength of the kraft paper in the production process, which can also reduce the cost, in addition, for the paper mill, the power consumption is large, and in order to reduce the operation cost, the independent matching plant of the thermal power plant is usually matched, and the coal ash is produced after the thermal power plant burns coal, at this time, the coal ash can be crushed and used as fly ash, so that the recycling of resources is realized, and the post-processing cost of the coal ash is saved, but at present, the papermaking filler is directly mixed with the papermaking fiber according to the batch, which can lead to a large mixing pool area, and the concentration is difficult to control accurately, so that the performance of the paper produced in the later period fluctuates. CONTENT

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a paper pulp preparation device with small area, which can realize continuous preparation, and the concentration of the prepared paper pulp is uniform.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows: a paper pulp preparation device, comprising a dissolving tank, a constant volume tank, a white water tank and a mixing tank, the dissolving tank, the constant volume tank and the mixing tank all have liquid outlets, the liquid outlet of the dissolving tank is communicated with the constant volume tank, and a first valve is arranged at the communication position, the liquid outlet of the constant volume tank is communicated with the mixing tank, and a second valve is arranged at the communication position, the white water tank has a drain, and the drain of the white water tank is communicated with the dissolving tank and the constant volume tank respectively, and a third valve is arranged at the communication position respectively, the liquid outlet of the mixing tank is communicated with the paper machine, and a fourth valve is arranged at the communication position, the dissolving tank is used to add papermaking filler and white water for preliminary dissolution to prepare filler solution, the constant volume tank is used to add filler solution and white water to constant volume the filler solution to a predetermined concentration, and the mixing tank is used to add papermaking fiber and constant volume filler solution for mixing to prepare paper pulp.

[0005] The beneficial effects of the above technical scheme are that the papermaking filler and white water can be preliminarily mixed, the concentration of the prepared filler solution is higher, part of the filler solution is discharged into the constant volume tank, then white water is introduced into the constant volume tank to dilute the filler solution to about 7wt%, and then the constant volume filler solution is discharged into the mixing tank to mix with the papermaking fiber to obtain the paper pulp which can be directly used by the paper machine.

[0006] The technical scheme further comprises a papermaking filler storage tank, which is used for storing the powdered papermaking filler, and the lower end of the papermaking filler storage tank is provided with a discharge port for discharging the papermaking filler into the dissolving tank.

[0007] The beneficial effect of the technical scheme is that the papermaking filler is directly stored in the papermaking filler storage tank for standby use.

[0008] The technical scheme further comprises a screw feeder, the feeding end of the screw feeder is communicated with the discharge port of the papermaking filler storage tank, the discharging end of the screw feeder is located at the tank opening of the dissolving tank, and the screw feeder is used for conveying the papermaking filler in the dissolving tank into the dissolving tank.

[0009] The beneficial effect of the technical scheme is that the papermaking filler in the papermaking filler storage tank can be conveyed into the dissolving tank by the screw feeder to prepare the filler solution, the dust raising is small during the whole process, and the manpower is saved.

[0010] The upper end of the papermaking filler storage tank is provided with a dust discharge port, and a dust collector is communicated with the dust discharge port.

[0011] The beneficial effect of the technical scheme is that when the papermaking filler storage tank discharges the papermaking filler, the dust escaping from the inside of the papermaking filler storage tank can be directly removed by the dust collector, so that the dust raising is avoided.

[0012] The dissolving tank is provided with a plurality of.

[0013] The beneficial effect of the technical scheme is that the plurality of dissolving tanks alternately prepare the paper pulp to enable the continuous operation of the paper machine.

[0014] The tank body of the dissolving tank, the constant volume tank and the dissolving tank is provided with a stirring member and / or an aeration member.

[0015] The beneficial effect of the technical scheme is that the solution or slurry prepared in the dissolving tank, the constant volume tank and the dissolving tank is more uniform.

[0016] The stirring member comprises a stirring paddle and a driving motor, the stirring paddle extends into the tank body, and the driving motor is in transmission connection with the stirring paddle.

[0017] The beneficial effect of the technical scheme is that the structure is simple, and the mixing effect is good.

[0018] The aeration member comprises a fan and a fan distribution pipeline, the air outlet of the fan is communicated with the air inlet end of the fan distribution pipeline, and the air outlet end of the fan distribution pipeline extends into the tank body.

[0019] The beneficial effects of the above technical solution are that the structure is simple, and the mixing by aeration can make the solution more uniform.

[0020] The concentration monitoring device is arranged at the constant volume tank in the above technical solution, and is used to monitor the concentration of the filler solution in the constant volume tank.

[0021] The beneficial effects of the above technical solution are that the concentration of the solution in the constant volume tank can be monitored in real time by the concentration monitoring device, so as to facilitate the workers to control the adding amount of the white water.

[0022] The water pumps are arranged at the liquid outlet of the dissolving tank, the liquid outlet of the constant volume tank and the drainage port of the white water tank in the above technical solution.

[0023] The beneficial effects of the above technical solution are that the material conveying of the whole paper pulp preparation device is more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure schematic view of the paper pulp preparation device is shown in the embodiment of the present application.

[0025] Figure 2 Another structure schematic view of the paper pulp preparation device is shown in the embodiment of the present application.

[0026] Figure 3 The setting schematic view of the stirring member and the aeration member at the dissolving tank is shown in the embodiment of the present application.

[0027] In the figure: 1, dissolving tank; 2, constant volume tank; 21, concentration monitoring device; 3, white water tank; 4, mixing tank; 5, paper machine; 6, papermaking filler storage tank; 61, dust remover; 7, screw feeder; 8, stirring member; 81, stirring paddle; 82, driving motor; 9, aeration member; 91, fan; 92, air distribution pipeline; 101, first valve; 102, second valve; 103, third valve; 104, fourth valve; 105, water pump. DETAILED DESCRIPTION

[0028] The principles and characteristics of the present application are described below in combination with the drawings, and the examples are only used to explain the present application, and are not used to limit the scope of the present application. In the following paragraphs, the present application is described in more detail with reference to the drawings. The advantages and characteristics of the present application will be more apparent according to the following description and claims. It should be noted that the drawings are very simplified and use non-precise proportions, only to facilitate and clearly assist the purpose of explaining the embodiments of the present application.

[0029] As Figure 1As shown, this embodiment provides a pulp preparation apparatus, including a dissolving tank 1, a volume-fixing tank 2, a white water tank 3, and a mixing tank 4. Each of the dissolving tank 1, volume-fixing tank 2, and mixing tank 4 has an outlet. The outlet of the dissolving tank 1 is connected to the volume-fixing tank 2, and a first valve 101 is installed at the connection point. The outlet of the volume-fixing tank 2 is connected to the mixing tank 4, and a second valve 102 is installed at the connection point. The white water tank 3 has a drain outlet, and the drain outlet of the white water tank 3 is connected to both the dissolving tank 1 and the volume-fixing tank 2, and a third valve 103 is installed at each connection point. The outlet of the mixing tank 4 is connected to a paper machine 5, and a valve is installed at the connection point. The fourth valve 104 is used in the dissolving tank 1 to add papermaking filler and white water for pre-dissolution to obtain a filler solution. The volume-fixing tank 2 is used to add the filler solution and white water to fix the filler solution to a predetermined concentration. The mixing tank 4 is used to add papermaking fibers and the fixed-volume filler solution for mixing to obtain pulp. In this way, the papermaking filler and white water can be initially mixed, and the concentration of the filler solution obtained is relatively high. At this time, part of the filler solution is discharged into the volume-fixing tank, and then white water is introduced into the volume-fixing tank to dilute the filler solution to about 7 wt%. Then the fixed-volume filler solution is discharged into the mixing tank to mix with papermaking fibers to obtain pulp that can be used directly by the paper machine.

[0030] like Figure 2 As shown, the above technical solution also includes a papermaking filler storage tank 6, which is used to store powdered papermaking filler. The lower end of the papermaking filler storage tank 6 has a discharge port for discharging papermaking filler into the dissolving pool 1, so that the papermaking filler is directly stored in the papermaking filler storage tank for later use.

[0031] like Figure 2 As shown, the above technical solution also includes a screw feeder 7. The feed end of the screw feeder 7 is connected to the discharge port of the paper filling tank 6, and the discharge end of the screw feeder 7 is located at the opening of the dissolving tank 1. The screw feeder 7 is used to transport the paper filling material in the dissolving tank 1 into the dissolving tank 1. In this way, the paper filling material in the paper filling tank can be transported to the dissolving tank by the screw conveyor to prepare the filling solution. The whole process generates little dust and saves manpower.

[0032] The papermaking filler storage tank 6 described in this embodiment is similar to the storage tank used in existing commercial concrete plants to store cement ash.

[0033] The upper end of the papermaking filler storage tank 6 is provided with a dust discharging port, and a dust remover 61 is communicated with the dust discharging port, so that when the papermaking filler storage tank discharges materials, the dust escaping from the inside of the papermaking filler storage tank can be directly removed by the dust remover, thereby avoiding dust raising (the dust discharging port can also balance the air pressure between the inside and outside of the papermaking filler storage tank, thereby making it more convenient to discharge materials from the papermaking filler storage tank downward), and the dust remover in the embodiment can directly adopt a dust removal bag (which can be matched with a rainproof cap, which is prior art and will not be described here), so that the structure is simpler.

[0034] The plurality of mixing tanks 4 are provided, so that the plurality of mixing tanks alternately prepare paper pulp to enable the paper machine to realize continuous operation, and the mixing tanks can be provided with 2 or 3.

[0035] As shown in Figure 3 The pool bodies of the dissolving tank 1, the constant volume tank 2 and the mixing tank 4 are all provided with stirring members 8 and / or aeration members 9, so that the solution or slurry prepared in the dissolving tank, the constant volume tank and the mixing tank is more uniform.

[0036] The stirring member 8 includes a stirring paddle 81 and a driving motor 82, the stirring paddle 81 extends into the pool body, and the driving motor 82 is in transmission connection with the stirring paddle 81, which has a simple structure and good mixing effect (the arrangement of the stirring member in the pool body is prior art and will not be described here); the aeration member 9 includes a fan 91 and a wind distribution pipeline 92, the air outlet of the fan 91 is communicated with the air inlet end of the wind distribution pipeline 92, and the air outlet end of the wind distribution pipeline 92 extends into the pool body (the arrangement of the aeration member in the pool body is also prior art and will not be described here), which has a simple structure and can make the solution more uniform by using the aeration method for mixing. Since the papermaking filler in the dissolving tank has relatively intense stirring when it is dissolved in white water, for the dissolving tank, both the stirring member and the aeration member can be provided, and for the constant volume tank and the mixing tank, the difficulty of dissolution and mixing is relatively low, so only the aeration member or the stirring member can be considered at this time. In the embodiment, if there are a plurality of aeration members, the plurality of aeration members can share one fan (the principle of the aeration member mixing is to blow a large amount of air into the bottom of the pool body, so that the liquid in the pool body is stirred to mix), Figure 3 The stirring member and the aeration member are described by taking the dissolving tank as an example, and their arrangement in the constant volume tank and the mixing tank can be referred to Figure 3

[0037] ​The concentration monitoring device 21 is arranged at the constant volume tank 2, and is used to monitor the concentration of the filler solution in the constant volume tank 2, so that the concentration of the solution in the constant volume tank can be monitored in real time by the concentration monitoring device, to facilitate the staff to control the adding amount of the white water.

[0038] The water pumps 105 are arranged at the liquid outlet of the dissolving tank 1, the liquid outlet of the constant volume tank 2 and the drain of the white water tank 3, so that the material conveying of the whole paper pulp preparation device is more reliable.

[0039] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any equivalent changes, modifications and evolutions made by those skilled in the art within the scope of the technical scheme of the present application, using the disclosed technical content, are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolutions made according to the essential technology of the present application to the above embodiments are still within the protection scope of the technical scheme of the present application.

Claims

1. A pulp dispensing device, characterized in that, The application relates to a papermaking filling material dissolving device, which comprises a dissolving tank (1), a constant volume tank (2), a white water tank (3) and a mixing tank (4), the dissolving tank (1), the constant volume tank (2) and the mixing tank (4) all have liquid outlets, the liquid outlet of the dissolving tank (1) is communicated with the constant volume tank (2), a first valve (101) is arranged at the communication position, the liquid outlet of the constant volume tank (2) is communicated with the mixing tank (4), a second valve (102) is arranged at the communication position, the white water tank (3) has a water outlet, the water outlet of the white water tank (3) is communicated with the dissolving tank (1), the constant volume tank (2) and the mixing tank (4) respectively, and third valves (103) are arranged at the communication positions respectively, the liquid outlet of the mixing tank (4) is communicated with a paper machine (5), and a fourth valve (104) is arranged at the communication position, papermaking filling material and white water are added into the dissolving tank (1) to carry out pre-dissolution to prepare a filling material solution, the filling material solution and white water are added into the constant volume tank (2) to make the filling material solution reach a predetermined concentration, and papermaking fibers and the filling material solution after constant volume are added into the mixing tank (4) to be mixed to prepare paper pulp.

2. The pulp dispensing apparatus of claim 1, wherein, The application further comprises a papermaking filling material storage tank (6) for storing powder papermaking filling material, the lower end of the papermaking filling material storage tank (6) has a discharge port for discharging the papermaking filling material into the dissolving tank (1).

3. The pulp dispensing apparatus of claim 2, wherein, The application further comprises a screw feeder (7), the feeding end of the screw feeder (7) is communicated with the discharge port of the papermaking filling material storage tank (6), the discharging end of the screw feeder (7) is located at the tank opening of the dissolving tank (1), and the screw feeder (7) is used for conveying the papermaking filling material in the dissolving tank (1) into the dissolving tank (1).

4. The pulp dispensing apparatus of claim 2, wherein, The upper end of the papermaking filling material storage tank (6) is provided with an ash discharge port, and a dust collector (61) is communicated with the ash discharge port.

5. The pulp dispensing apparatus of claim 1, wherein, The mixing tank (4) is provided with a plurality of.

6. The pulp dispensing apparatus of claim 1, wherein, Stirring members (8) and / or aeration members (9) are arranged at the tank bodies of the dissolving tank (1), the constant volume tank (2) and the mixing tank (4).

7. The pulp dispensing apparatus of claim 6, wherein, The stirring member (8) comprises a stirring paddle (81) and a driving motor (82), the stirring paddle (81) extends into the tank body, and the driving motor (82) is in transmission connection with the stirring paddle (81).

8. The pulp dispensing apparatus of claim 6, wherein, The aeration member (9) comprises a fan (91) and a wind distribution pipeline (92), the air outlet of the fan (91) is communicated with the air inlet end of the wind distribution pipeline (92), and the air outlet end of the wind distribution pipeline (92) extends into the tank body.

9. The pulp dispensing apparatus of claim 1, wherein, A concentration monitoring device (21) is arranged at the constant volume tank (2), and the concentration monitoring device (21) is used for monitoring the concentration of the filling material solution in the constant volume tank (2).

10. The pulp dispensing apparatus of claim 1, wherein, Water pumps (105) are arranged at the liquid outlets of the dissolving tank (1) and the constant volume tank (2) and the water outlet of the white water tank (3).

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