A high-efficiency mixing reactor for bagasse pulp bleaching

Abstract

This utility model discloses a high-efficiency mixing reactor for bleaching bagasse pulp, including a mixing reaction tank, a bagasse pulp preparation tank, and a chlorine dioxide preparation tank. The mixing reaction tank has bagasse pulp inlets and chlorine dioxide inlets on its top two sides, respectively, and a discharge outlet at its bottom. The bottoms of the bagasse pulp preparation tank and the chlorine dioxide preparation tank are higher than the top of the mixing reaction tank, and their bottom outlets are connected to the bagasse pulp inlets and chlorine dioxide inlets respectively via discharge pipes. The bagasse pulp preparation tank contains a float and a level switch, and the chlorine dioxide preparation tank contains a float and a level switch. This utility model, through the floats and level switches in the bagasse pulp preparation tank and the chlorine dioxide preparation tank, can control the submersible pump to disconnect, ensuring a precise ratio of bagasse pulp and chlorine dioxide drawn into the tanks, while also saving labor costs and improving mixing reaction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pulp and paper technology, specifically to a high-efficiency mixing reactor for bagasse pulp bleaching. Background Technology

[0002] In the pulp and paper industry, bagasse pulp, as a raw material for papermaking, needs to be bleached before it can be used. During the bleaching process, chlorine dioxide needs to be added to the pulp for a chemical reaction. The existing bleaching method involves mixing the chemical agent and bagasse pulp in a mixing reactor before entering the bleaching tower for bleaching. After bleaching, a dechlorinating agent is added to remove the residual chlorine dioxide in the pulp before it enters the next process. Currently, the mixing reactor used requires manual weighing of both bagasse pulp and chlorine dioxide before they are added. This is not only time-consuming and labor-intensive, but also prone to human error, resulting in inaccurate ratios of bagasse pulp and chlorine dioxide, which affects the quality of the pulp. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a high-efficiency mixing reactor for bagasse pulp bleaching, so as to solve the technical problems mentioned in the background.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency mixing reactor for bleaching bagasse pulp, comprising a mixing reaction tank, a bagasse pulp preparation tank, and a chlorine dioxide preparation tank. The mixing reaction tank has a bagasse pulp inlet and a chlorine dioxide inlet on its top two sides, respectively, and a discharge outlet at its bottom. The bottoms of the bagasse pulp preparation tank and the chlorine dioxide preparation tank are higher than the top of the mixing reaction tank, and the discharge outlets at the bottom are connected to the bagasse pulp inlet and the chlorine dioxide inlet respectively through discharge pipes. The bagasse pulp preparation tank is equipped with a float ball and a level switch, and the chlorine dioxide preparation tank is equipped with a float ball and a level switch.

[0005] Furthermore, the bagasse slurry preparation box is equipped with a fixed rod, and the float is mounted on the fixed rod and floats on the liquid surface. A sliding groove is fixed on the inner wall of the bagasse slurry preparation box near the float, and a slider is provided in the sliding groove. The liquid level switch is fixed on the slider. An adjusting rod is fixed above the slider. The top of the adjusting rod passes through the top of the bagasse slurry preparation box, and a fixing block is provided on the top of the bagasse slurry preparation box for fixing the adjusting rod.

[0006] Preferably, the bagasse slurry preparation tank has a feed inlet on one side of its top, which is connected to a submersible pump installed in the bagasse slurry tank via a pipe, and the level switch is electrically connected to the submersible pump.

[0007] Furthermore, the chlorine dioxide preparation tank is equipped with a fixed rod 2, and the float 2 is sleeved on the fixed rod 2 and floats on the liquid surface. A sliding groove 2 is fixed on the inner wall of the chlorine dioxide preparation tank near the float 2. A slider 2 is provided in the sliding groove 2. The liquid level switch 2 is fixed on the slider 2. An adjusting rod 2 is fixed above the slider 2. The top of the adjusting rod 2 passes through the top of the chlorine dioxide preparation tank, and a fixing block 2 for fixing the adjusting rod 2 is provided on the top of the chlorine dioxide preparation tank.

[0008] Preferably, the chlorine dioxide preparation tank has a feed inlet on one side of the top, which is connected to a submersible pump II installed in the chlorine dioxide storage tank via a pipe, and the liquid level switch II is electrically connected to the submersible pump II.

[0009] Furthermore, each of the float one, level switch one, float two, and level switch two is equipped with a magnetic element.

[0010] Furthermore, both the bagasse slurry preparation box and the chlorine dioxide preparation box are equipped with solenoid valves at their outlets.

[0011] In summary, the present invention has the following main advantages:

[0012] This invention utilizes floats and level switches within the bagasse slurry and chlorine dioxide preparation tanks to control the disengagement of the submersible pump, ensuring a precise ratio of bagasse slurry and chlorine dioxide extracted into the tanks. This improves the mixing quality of the bagasse slurry and chlorine dioxide, saving labor costs. Furthermore, since the bottoms of the bagasse slurry and chlorine dioxide preparation tanks are higher than the top of the mixing reaction tank, once the mixed slurry in the mixing reaction tank has been discharged from the discharge port, simply opening the solenoid valves at the discharge ports at the bottom of the bagasse slurry and chlorine dioxide preparation tanks allows all the remaining material to be discharged into the mixing reaction tank for immediate mixing, thus improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 A schematic diagram of the internal structure of a bagasse pulp preparation box;

[0015] Figure 3 This is a schematic diagram of the internal structure of the chlorine dioxide preparation tank. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] The embodiments of this utility model will be described below based on its overall structure.

[0018] like Figure 1 As shown, this utility model includes a mixing reaction tank 1, a bagasse slurry preparation tank 2, and a chlorine dioxide preparation tank 3. The mixing reaction tank 1 has a bagasse slurry inlet 11 and a chlorine dioxide inlet 12 on its top sides, and a discharge port 13 at its bottom. The specific internal structure and working principle of the mixing reaction tank 1 are existing technologies and common technical knowledge, therefore they will not be described further in this application. The bottoms of the bagasse slurry preparation tank 2 and the chlorine dioxide preparation tank 3 are higher than the top of the mixing reaction tank 1, and their bottom outlets are connected to the bagasse slurry inlet 11 and the chlorine dioxide inlet 12 respectively via discharge pipes. Both the bagasse slurry preparation tank 2 and the chlorine dioxide preparation tank 3 are equipped with solenoid valves 8 at their outlets. By setting the bagasse slurry preparation tank 2 and the chlorine dioxide preparation tank 3 higher than the mixing reaction tank 1, when it is necessary to add materials to the mixing reaction tank 1, only the solenoid valve 8 needs to be opened, without the need for any external force.

[0019] like Figure 2 As shown, the bagasse pulp preparation tank 2 is equipped with a float ball 21 and a level switch 22. A fixed rod 23 is also provided inside the tank. The float ball 21 is fitted onto the fixed rod 23 and floats on the liquid surface. A groove 24 is fixed to the inner wall of the bagasse pulp preparation tank 2 near the float ball 21. A slider 25 is installed inside the groove 24. The level switch 22 is fixed to the slider 24. An adjusting rod 26 is fixed above the slider 25. The top of the adjusting rod 26 passes through the top of the bagasse pulp preparation tank 2. The top of the bagasse pulp preparation tank 2 is equipped with a fixing block 27 for fixing the adjusting rod 26. When it is necessary to adjust the height of the liquid level switch 22, loosen the bolt 28 on the fixing block 27 to allow the adjusting rod 26 to move up and down. The adjusting rod 26 drives the liquid level switch 22, which is fixed on the slider 25, to move up and down. After adjusting to the appropriate height, tighten the bolt 28. The top side of the bagasse pulp preparation tank 2 is equipped with a feed inlet, which is connected to the submersible pump 5 installed in the bagasse pulp tank 4 through a pipe. Both float ball 21 and level switch 22 are equipped with magnetic elements. When bagasse slurry is pumped into bagasse slurry preparation tank 2, float ball 21, which floats on the surface of bagasse slurry, rises with the rise of the liquid level. When it approaches or is level with level switch 22, the magnetic element inside float ball 21 triggers the magnetic element inside level switch 22, causing level switch 22 to send a power-off signal to submersible pump 5, stopping the pumping of material into bagasse slurry preparation tank 2, thus achieving accurate metering. The float ball 21, level switch 22, and level switch 22 controlling submersible pump 5 in this application all adopt existing technology.

[0020] like Figure 3As shown, the chlorine dioxide preparation tank 3 is equipped with a float ball 31 and a level switch 32. A fixed rod 33 is also provided inside the chlorine dioxide preparation tank 3. The float ball 31 is fitted onto the fixed rod 33 and floats on the liquid surface. A groove 34 is fixed to the inner wall of the chlorine dioxide preparation tank 3 near the float ball 31. A slider 35 is installed inside the groove 34. The level switch 32 is fixed to the slider 34. An adjusting rod 36 is fixed above the slider 35, and the top of the adjusting rod 36 passes through the top of the chlorine dioxide preparation tank 3. Furthermore, the top of the chlorine dioxide preparation tank 3 is equipped with a fixing block 37 for fixing the adjusting rod 36. When it is necessary to adjust the height of the liquid level switch 32, loosen the bolt 38 on the fixing block 37 to allow the adjusting rod 36 to move up and down. The adjusting rod 36 drives the liquid level switch 32, which is fixed on the slider 35, to move up and down. After adjusting to the appropriate height, tighten the bolt 38. The top side of the chlorine dioxide preparation tank 3 is equipped with a feed inlet, which is connected to the submersible pump 7 inside the chlorine dioxide storage tank 6 via a pipe. Both float 31 and level switch 32 are equipped with magnetic elements. When chlorine dioxide is pumped into the chlorine dioxide preparation tank 3, float 31, which floats on the surface of the chlorine dioxide liquid, rises with the liquid level. When it approaches or is level with level switch 32, the magnetic element inside float 31 triggers the magnetic element inside level switch 32, causing level switch 32 to send a power-off signal to submersible pump 7, stopping the pumping of chlorine dioxide into the chlorine dioxide preparation tank 3, thus achieving accurate metering. The float 31, level switch 32, and level switch 32 controlling submersible pump 7 in this application all adopt existing technology.

[0021] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-efficiency mixing reactor for bleaching bagasse pulp, characterized in that, The system includes a mixing reaction tank, a bagasse slurry preparation tank, and a chlorine dioxide preparation tank. The mixing reaction tank has bagasse slurry inlets and chlorine dioxide inlets on its top two sides, respectively, and a discharge outlet at its bottom. The bottoms of the bagasse slurry preparation tank and the chlorine dioxide preparation tank are higher than the top of the mixing reaction tank, and their bottom outlets are connected to the bagasse slurry inlets and chlorine dioxide inlets, respectively, via discharge pipes. The bagasse slurry preparation tank is equipped with a float ball and a level switch, and the chlorine dioxide preparation tank is equipped with a float ball and a level switch.

2. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 1, characterized in that: The bagasse slurry preparation tank is equipped with a fixed rod, and a float is mounted on the fixed rod and floats on the liquid surface. A sliding groove is fixed on the inner wall of the bagasse slurry preparation tank near the float, and a slider is installed in the sliding groove. The liquid level switch is fixed on the slider. An adjusting rod is fixed above the slider. The top of the adjusting rod passes through the top of the bagasse slurry preparation tank, and a fixing block is provided on the top of the bagasse slurry preparation tank for fixing the adjusting rod.

3. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 2, characterized in that: The bagasse slurry preparation tank has a feed inlet on one side of its top. The feed inlet is connected to a submersible pump installed in the bagasse slurry tank through a pipe. The level switch is electrically connected to the submersible pump.

4. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 1, characterized in that: The chlorine dioxide preparation tank is equipped with a fixed rod 2. The float 2 is sleeved on the fixed rod 2 and floats on the liquid surface. A sliding groove 2 is fixed on the inner wall of the chlorine dioxide preparation tank near the float 2. A slider 2 is provided in the sliding groove 2. The liquid level switch 2 is fixed on the slider 2. An adjusting rod 2 is fixed above the slider 2. The top of the adjusting rod 2 passes through the top of the chlorine dioxide preparation tank, and a fixing block 2 for fixing the adjusting rod 2 is provided on the top of the chlorine dioxide preparation tank.

5. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 4, characterized in that: The chlorine dioxide preparation tank has a feed inlet on one side of its top. The feed inlet is connected to a submersible pump installed in the chlorine dioxide storage tank via a pipe. The level switch is electrically connected to the submersible pump.

6. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 1, characterized in that: The float one, level switch one, float two, and level switch two are all equipped with magnetic components.

7. The high-efficiency mixing reactor for bagasse pulp bleaching according to claim 1, characterized in that: Both the bagasse slurry preparation box and the chlorine dioxide preparation box are equipped with solenoid valves at their outlets.

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