Scale treatment device for papermaking equipment

Abstract

The utility model belongs to the technical field of papermaking, in particular to a scaling treatment device for papermaking equipment, which comprises a pipeline, a controller and a scale inhibitor box, papermaking black liquor flows in the pipeline, one end of the pipeline is fixedly communicated with an evaporator, the top of the evaporator is fixedly communicated with an adding pipe, one end of the adding pipe is fixedly communicated with a water pump, and the other end of the adding pipe is fixedly communicated with a water pump. The water pump is communicated with the bottom of one side of the scale inhibitor box, the outer side of the adding pipe is fixedly sleeved with a regulation and control plate, a regulation and control assembly is arranged between the regulation and control plate and the adding pipe, and a uniform mixing assembly is arranged on the scale inhibitor box. The scale inhibitor adding device is reasonable in structural design, the amount of the added scale inhibitor liquid can be regulated and controlled according to different concentrations of calcium ions contained in black liquor, the amount of the scale inhibitor liquid is right appropriate, waste caused by excessive adding is avoided, the scale inhibition effect cannot be achieved if too little adding is avoided, meanwhile, the scale inhibitor liquid can be stirred and mixed uniformly, and the scale inhibition effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, in particular to a scaling treatment device for papermaking equipment. Background Technique

[0002] The papermaking industry is one of the important industrial industries in China. The modern papermaking process can be divided into main steps such as pulping, modulation, papermaking, and processing. Pulping is the first step of papermaking. Generally, wood is transformed into pulp. The wastewater generated by the alkaline pulping process (caustic soda method and sulfate method) in the papermaking industry contains a large amount of lignin and is dark brown, so it is called black liquor. The black liquor contains a large amount of suspended solids, organic pollutants and toxic substances. Direct discharge into water bodies will cause serious pollution. Therefore, treating papermaking black liquor is an inevitable requirement of modern environmental protection. The alkali recovery treatment method is a relatively effective method to solve the black liquor problem at present. Through the four main sections of black liquor extraction, evaporation, combustion, and causticization, the SS, COD, and BOD in the black liquor can be completely removed, and alkali can be recovered to generate secondary steam (energy). However, due to the characteristics of high calcium content and high alkalinity in the black liquor, scaling will occur in the pipelines and evaporators during the flow and evaporation of the black liquor, which will affect the treatment effect and cause the equipment to stop production in the light case, and cause safety accidents and endanger life and property safety in the heavy case.

[0003] For the related scaling treatment device for papermaking equipment, generally, a scale inhibitor is continuously added to the black liquor flow pipeline to prevent scaling in the pipeline and evaporator, so as to achieve the purpose of protecting the pipeline and evaporator. However, it is inconvenient to effectively control the amount of scale inhibitor added according to the different calcium ion concentrations in the black liquor, resulting in waste due to excessive addition of scale inhibitor and ineffective scale inhibition due to too little addition. Therefore, we propose a scaling treatment device for papermaking equipment to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages and propose a scaling treatment device for papermaking equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A scaling treatment device for papermaking equipment includes a pipeline through which papermaking black liquor flows, a controller and a scale inhibitor tank. One end of the pipeline is fixedly communicated with an evaporator. The top of the evaporator is fixedly communicated with a feeding pipe. One end of the feeding pipe is fixedly communicated with a water pump. The water pump is communicated with the bottom of one side of the scale inhibitor tank. The outside of the feeding pipe is fixedly sleeved with a regulation plate. A regulation component is arranged between the regulation plate and the feeding pipe. A mixing component is arranged on the scale inhibitor tank. An on-line calcium ion concentration meter is arranged on the pipeline.

[0007] Preferably, the regulation component includes a driving motor fixedly connected to the top of the regulation plate, a flow meter arranged on the adding pipe, and two threaded rods rotatably connected to the inner walls of the top and bottom of the regulation plate. A driving shaft is fixedly connected to the output shaft of the driving motor, a driving gear is fixedly connected to the bottom end of the driving shaft, a driven gear is fixedly sleeved on the outer side of the threaded rod, the driving gear meshes with the two driven gears, a lifting plate is threadedly sleeved on the outer sides of the two threaded rods, a baffle is fixedly connected to the bottom of the lifting plate, and the baffle is slidably sleeved in the adding pipe.

[0008] Preferably, the flow meter, the water pump, the driving motor, the evaporator and the online calcium ion concentration meter are all electrically connected to the controller.

[0009] Preferably, the lifting plate is slidably sleeved in the regulation plate.

[0010] Preferably, a groove is formed in the inner bottom of the adding pipe, a sealing gasket is fixedly connected to the bottom of the baffle, and the sealing gasket is slidably and sealingly sleeved in the groove.

[0011] Preferably, the mixing component includes a stirring motor fixedly connected to the top of the scale inhibitor tank, a stirring shaft fixedly connected to the output shaft of the stirring motor, and a plurality of stirring rods fixedly connected to the outer side of the stirring shaft.

[0012] Preferably, the stirring shaft is rotatably connected to the inner walls of the top and bottom of the scale inhibitor tank, and the stirring motor is electrically connected to the controller.

[0013] Preferably, an adding hole is formed in the top of the scale inhibitor tank, and an adding pipe is fixedly communicated in the adding hole.

[0014] In the present utility model, for the scale formation treatment device for papermaking equipment, the papermaking black liquor is injected into the pipeline and flows into the evaporator for evaporation. When the papermaking black liquor flows in the pipeline, the rotation of the stirring shaft and the stirring rods is driven by the stirring motor, so as to stir and mix the scale inhibitor liquid evenly, ensuring the scale inhibition effect. Through the water pump, the scale inhibitor liquid in the scale inhibitor tank can be pumped into the adding pipe and then continuously added into the pipeline from the adding pipe. By continuously adding the scale inhibitor liquid, the scale formation in the pipeline and the evaporator can be effectively prevented, thereby achieving the purpose of protecting the pipeline and the evaporator.

[0015] In the present utility model, for the scaling treatment device used in papermaking equipment, through an online calcium ion concentration meter, the calcium ion concentration of papermaking black liquor can be measured, and the data of the calcium ion concentration is sent to a controller. The controller processes and calculates the data, and obtains the value of the inflow rate of the scale inhibitor liquid at this time. According to the calcium ion concentration, a driving motor is started. The driving motor drives the rotation of a driving shaft and a driving gear. The driving gear drives the synchronous rotation of two driven gears and a threaded rod. The two threaded rods drive the lifting plate and the baffle plate to move up or down, thereby effectively changing the shielding area of the baffle plate for the adding pipe, and further effectively changing the effective cross-sectional area through which the scale inhibitor liquid passes, and further regulating the amount of the scale inhibitor liquid flowing in. Through a flow meter, the value of the inflow rate can be measured. When the feedback value of the above-mentioned flow meter is reached, the flow meter sends a signal to the controller, and the controller shuts off the driving motor;

[0016] The structure of the present utility model is reasonably designed. It can regulate the amount of the scale inhibitor liquid added according to the different calcium ion concentrations in the black liquor, making the amount of the scale inhibitor liquid just right, avoiding waste caused by excessive addition and not achieving the scale inhibition effect due to too little addition. At the same time, the scale inhibitor liquid can be stirred and mixed evenly to ensure the scale inhibition effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the scaling treatment device for papermaking equipment proposed by the present utility model;

[0018] Figure 2 is a sectional view of the scaling treatment device for papermaking equipment proposed by the present utility model;

[0019] Figure 3 is a schematic structural diagram of part A of the scaling treatment device for papermaking equipment proposed by the present utility model;

[0020] Figure 4 is a perspective view of the regulation component of the scaling treatment device for papermaking equipment proposed by the present utility model;

[0021] Figure 5 is a connection diagram of the scaling treatment device for papermaking equipment proposed by the present utility model.

[0022] In the figure: 1, pipeline; 2, evaporator; 3, online calcium ion concentration meter; 4, adding pipe; 5, water pump; 6, scale inhibitor tank; 7, stirring motor; 8, adding pipe; 9, stirring shaft; 10, stirring rod; 11, controller; 12, driving motor; 13, regulation plate; 14, driving shaft; 15, driving gear; 16, driven gear; 17, threaded rod; 18, lifting plate; 19, baffle plate; 20, sealing gasket; 21, groove; 22, flow meter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Referring to Figures 1-5 , a scaling treatment device for a papermaking apparatus, comprising a pipeline 1 through which papermaking black liquor flows, a controller 11, and a scale inhibitor tank 6. One end of the pipeline 1 is fixedly communicated with an evaporator 2. The top of the evaporator 2 is fixedly communicated with a dosing pipe 4. One end of the dosing pipe 4 is fixedly communicated with a water pump 5. The water pump 5 is communicated with the bottom side of the scale inhibitor tank 6. A regulating plate 13 is fixedly sleeved on the outside of the dosing pipe 4. A regulating assembly is arranged between the regulating plate 13 and the dosing pipe 4. A homogenizing assembly is arranged on the scale inhibitor tank 6. An on-line calcium ion concentration meter 3 is arranged on the pipeline 1.

[0025] In the present utility model, the regulating assembly includes a driving motor 12 fixedly connected to the top of the regulating plate 13, a flow meter 22 arranged on the dosing pipe 4, and two threaded rods 17 rotatably connected to the inner walls of the top and bottom of the regulating plate 13. A driving shaft 14 is fixedly connected to the output shaft of the driving motor 12. A driving gear 15 is fixedly connected to the bottom end of the driving shaft 14. Driven gears 16 are fixedly sleeved on the outside of the threaded rods 17. The driving gear 15 meshes with the two driven gears 16. The same lifting plate 18 is threadedly sleeved on the outside of the two threaded rods 17. A baffle 19 is fixedly connected to the bottom of the lifting plate 18. The baffle 19 is slidably sleeved in the dosing pipe 4. The flow meter 22, the water pump 5, the driving motor 12, the evaporator 2, and the on-line calcium ion concentration meter 3 are all electrically connected to the controller 11.

[0026] The working principle is as follows: Through the water pump 5, the scale inhibitor liquid in the scale inhibitor tank 6 can be pumped into the adding pipe 4, and then continuously added into the pipeline 1 from the adding pipe 4. By continuously adding the scale inhibitor liquid, the scaling in the pipeline 1 and the evaporator 2 can be effectively prevented, thereby achieving the purpose of protecting the pipeline 1 and the evaporator 2. Through the on-line calcium ion concentration meter 3, the calcium ion concentration of the papermaking black liquor can be measured, and the calcium ion concentration data is sent to the controller 11 (not shown in the figure). The controller 11 processes and calculates the data, and obtains the value of the inflow rate of the scale inhibitor liquid at this time (the value of this inflow rate is the feedback value of the flow meter 22). According to the calcium ion concentration, the driving motor 12 is started. The driving motor 12 drives the rotation of the driving shaft 14 and the driving gear 15. The driving gear 15 drives the synchronous rotation of the two driven gears 16 and the threaded rods 17. The two threaded rods 17 drive the lifting plate 18 and the baffle 19 to move up or down, thereby effectively changing the shielding area of the baffle 19 for the adding pipe 4, and further effectively changing the effective cross-sectional area through which the scale inhibitor liquid passes, and further regulating the amount of the scale inhibitor liquid flowing in. Through the flow meter 22, the value of the inflow rate can be measured. When the feedback value of the above flow meter 22 is reached, the flow meter 22 sends a signal to the controller 11, and the controller 11 turns off the driving motor 12, thereby regulating the amount of the added scale inhibitor liquid according to the different calcium ion concentrations of the black liquor, making the amount of the scale inhibitor liquid just right, avoiding waste caused by excessive addition and insufficient scale inhibition effect due to too little addition.

[0027] In the present utility model, the lifting plate 18 is slidably sleeved in the regulating plate 13, which is convenient for guiding the lifting plate 18 and making its movement more stable.

[0028] In the present utility model, a groove 21 is formed in the inner bottom of the adding pipe 4. A sealing gasket 20 is fixedly connected to the bottom of the baffle 19. The sealing gasket 20 is slidably and sealingly sleeved in the groove 21 to ensure the sealing between the baffle 19 and the adding pipe 4 and avoid liquid leakage when the addition stops.

[0029] In the present utility model, the mixing component includes a stirring motor 7 fixedly connected to the top of the scale inhibitor tank 6. A stirring shaft 9 is fixedly connected to the output shaft of the stirring motor 7. A plurality of stirring rods 10 are fixedly connected to the outer side of the stirring shaft 9. The stirring motor 7 drives the rotation of the stirring shaft 9 and the stirring rods 10, thereby stirring and mixing the scale inhibitor liquid evenly to ensure the scale inhibition effect.

[0030] In the present utility model, the stirring shaft 9 is rotatably connected to the top inner wall and the bottom inner wall of the scale inhibitor tank 6. The stirring motor 7 and the controller 11 are electrically connected, which is convenient for supporting the stirring shaft 9 and making its rotation more stable.

[0031] In the present utility model, an adding hole is provided at the top of the scale inhibitor tank 6, and an adding pipe 8 is fixedly communicated in the adding hole, which is convenient for adding scale inhibitor liquid.

[0032] In the present utility model, the papermaking black liquor is injected into the pipeline 1 and flows into the evaporator 2 for evaporation. When the papermaking black liquor flows in the pipeline 1, the rotation of the stirring shaft 9 and the stirring rod 10 is driven by the stirring motor 7, so as to stir and mix the scale inhibitor liquid evenly, ensuring the scale inhibition effect. Through the water pump 5, the scale inhibitor liquid in the scale inhibitor tank 6 can be pumped into the adding pipe 4 and then continuously added into the pipeline 1 from the adding pipe 4. By continuously adding the scale inhibitor liquid, the scaling in the pipeline 1 and the evaporator 2 can be effectively prevented, thereby achieving the purpose of protecting the pipeline 1 and the evaporator 2. Through the on-line calcium ion concentration meter 3, the calcium ion concentration of the papermaking black liquor can be measured, and the data of the calcium ion concentration is sent to the controller 11 (not shown in the figure). The controller 11 processes and calculates the data and obtains the value of the inflow rate of the scale inhibitor liquid at this time (the value of this inflow rate is the feedback value of the flow meter 22). According to the calcium ion concentration, the driving motor 12 is started. The driving motor 12 drives the rotation of the driving shaft 14 and the driving gear 15. The driving gear 15 drives the synchronous rotation of the two driven gears 16 and the threaded rods 17. The two threaded rods 17 drive the lifting plate 18 and the baffle 19 to move up or down, so as to effectively change the shielding area of the baffle 19 for the adding pipe 4, and then effectively change the effective cross-sectional area through which the scale inhibitor liquid passes, and then control the amount of the scale inhibitor liquid flowing in. Through the flow meter 22, the value of the inflow rate can be measured. When the feedback value of the above-mentioned flow meter 22 is reached, the flow meter 22 sends a signal to the controller 11, and the controller 11 turns off the driving motor 12, so as to control the amount of the added scale inhibitor liquid according to the different calcium ion concentrations of the black liquor, making the amount of the scale inhibitor liquid just right, avoiding waste caused by excessive addition and insufficient scale inhibition effect due to too little addition.

[0033] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A scaling treatment device for papermaking equipment, characterized in that It includes a pipeline (1) through which papermaking black liquor flows, a controller (11) and a scale inhibitor tank (6). One end of the pipeline (1) is fixedly connected and communicated with an evaporator (2). The top of the evaporator (2) is fixedly connected and communicated with an adding pipe (4). One end of the adding pipe (4) is fixedly connected and communicated with a water pump (5). The water pump (5) is communicated with the bottom side of the scale inhibitor tank (6). The outer side of the adding pipe (4) is fixedly sleeved with a regulating plate (13). A regulating component is arranged between the regulating plate (13) and the adding pipe (4). A mixing component is arranged on the scale inhibitor tank (6). An online calcium ion concentration meter (3) is arranged on the pipeline (1).

2. The scale treatment device for a papermaking equipment according to claim 1, wherein, The regulating component includes a driving motor (12) fixedly connected to the top of the regulating plate (13), a flowmeter (22) arranged on the adding pipe (4), and two threaded rods (17) rotatably connected to the inner wall of the top and the inner wall of the bottom of the regulating plate (13). A driving shaft (14) is fixedly connected to the output shaft of the driving motor (12). A driving gear (15) is fixedly connected to the bottom end of the driving shaft (14). Driven gears (16) are fixedly sleeved on the outer sides of the threaded rods (17). The driving gear (15) meshes with the two driven gears (16). The outer sides of the two threaded rods (17) are threadedly sleeved with the same lifting plate (18). A baffle (19) is fixedly connected to the bottom of the lifting plate (18). The baffle (19) is slidably sleeved in the adding pipe (4).

3. The scale treatment device for a papermaking apparatus according to claim 2, characterized in that, The flowmeter (22), the water pump (5), the driving motor (12), the evaporator (2) and the online calcium ion concentration meter (3) are all electrically connected to the controller (11).

4. The scale treatment device for a papermaking apparatus according to claim 2, characterized in that, The lifting plate (18) is slidably sleeved in the regulating plate (13).

5. The scale treatment device for a papermaking apparatus according to claim 2, wherein, A groove (21) is formed in the inner bottom of the adding pipe (4). A sealing gasket (20) is fixedly connected to the bottom of the baffle (19). The sealing gasket (20) is slidably and sealingly sleeved in the groove (21).

6. The scale treatment device for papermaking equipment according to claim 1, characterized in that, The mixing component includes a stirring motor (7) fixedly connected to the top of the scale inhibitor tank (6). A stirring shaft (9) is fixedly connected to the output shaft of the stirring motor (7). A plurality of stirring rods (10) are fixedly connected to the outer side of the stirring shaft (9).

7. The scale treatment device for a papermaking apparatus according to claim 6, characterized in that, The stirring shaft (9) is rotatably connected to the inner wall of the top and the inner wall of the bottom of the scale inhibitor tank (6). The stirring motor (7) is electrically connected to the controller (11).

8. The scale treatment device for a papermaking apparatus according to claim 1, wherein, An adding hole is formed in the top of the scale inhibitor tank (6). An adding pipe (8) is fixedly connected and communicated in the adding hole.

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