Anti-precipitation device for liquid chromium reducing agent

Abstract

The utility model relates to the technical field of liquid anti-sedimentation, in particular to a liquid chromium reducing agent anti-sedimentation device which comprises a stirring mechanism used for stirring a liquid chromium reducing agent in a tank body, the stirring mechanism comprises a driving motor and a plurality of groups of stirring rods, the plurality of groups of stirring rods are connected with a rotating shaft connected to the output end of the driving motor, and the rotating shaft is connected with the driving motor. A rotating shaft is arranged at the lower end of the tank body and is of a hollow structure, an injection pipe communicated with the hollow part of the rotating shaft is arranged in the middle of the rotating shaft, an injection hole is formed in the injection pipe, and a conveying pipe is arranged between the lower end of the tank body and the rotating shaft in a communicated mode. The liquid chromium-reducing agent in the tank body forms circulation and vortex, the liquid chromium-reducing agent at the bottom is conveyed to the spraying pipe through the pump body to be sprayed out, new flow fields are generated at different positions and angles, and the new flow fields are overlapped with the original flow fields, so that the overall mixing effect of the liquid chromium-reducing agent is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of liquid anti-settling technology, and in particular to a device for preventing sedimentation of liquid chromium-reducing agents. Background Technology

[0002] In the cement production process, liquid chromium-reducing agents are generally added during the cement grinding stage. They are sprayed or injected evenly into the cement grinding system. As the cement materials are ground and mixed, the chromium-reducing agent comes into full contact with the chromium compounds in the cement and undergoes a chemical reaction, thereby reducing hexavalent chromium. During routine storage, the chromium-reducing agent may settle at the bottom of the container. These precipitates may clump together or form a tight mass, hindering the smooth entry of liquid into the pump body, preventing the pump from drawing in liquid normally, and thus causing it to be unable to pump.

[0003] Currently, the common method for preventing sedimentation of liquid chromium-reducing agents is to use agitation to make the liquid chromium-reducing agent flow with the rotation of the agitator blades. Even if agitation can make the liquid flow as a whole, there may be dead zones in some corners or near the container wall, which means that the chromium-reducing agent in these areas cannot be fully agitated and there is still a possibility of sedimentation. Utility Model Content

[0004] This invention provides a device to prevent sedimentation of liquid chromium reducing agents, thereby solving the problem of dead zones in the existing technology, which may lead to sedimentation.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A device for preventing sedimentation of liquid chromium-reducing agent includes a stirring mechanism for stirring the liquid chromium-reducing agent in a tank. The stirring mechanism includes a drive motor and multiple sets of stirring rods. The multiple sets of stirring rods are connected to a rotating shaft connected to the output end of the drive motor. The rotating shaft has a hollow structure. A spray pipe connected to the hollow part of the rotating shaft is provided in the middle of the rotating shaft. The spray pipe has spray holes. A conveying pipe is provided between the lower end of the tank and the rotating shaft. A pump body is provided on the conveying pipe for conveying the liquid chromium-reducing agent in the tank to the spray pipe for spraying.

[0007] Preferably, the spray pipes are in two sets, with the spray holes on the upper spray pipe opening upwards and the spray holes on the lower spray pipe opening downwards.

[0008] Preferably, the density of the injection holes on the lower injection pipe is greater than the density of the injection holes on the upper injection pipe.

[0009] Preferably, the spray pipe and the stirring rod are staggered.

[0010] Preferably, it further includes a timing mechanism for starting the stirring mechanism and the pump body at preset time intervals. The timing mechanism includes a timer and a controller. The timer is used to set the start time and running time. The controller controls the start and stop of the drive motor and the pump body according to the setting signal of the timer.

[0011] Preferably, a rotary joint is rotatably connected to the rotating shaft in a sealed manner, and the output end of the conveying pipe passes through the rotary joint and is fixedly connected to the rotary joint.

[0012] The beneficial effects of this invention are as follows: First, the liquid chromium-reducing agent in the tank is stirred and mixed by the stirring mechanism, so that the liquid chromium-reducing agent in the tank forms a circulation and vortex. Then, the liquid chromium-reducing agent at the bottom is transported to the spray pipe by the pump and sprayed out. New flow fields are generated at different positions and angles, which are superimposed with the original flow fields, thereby enhancing the overall mixing effect of the liquid chromium-reducing agent, making the particles in the liquid chromium-reducing agent more evenly dispersed, and reducing the chance of sedimentation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0015] Figure 2 A cross-sectional structural schematic diagram provided for this utility model;

[0016] Figure 3 A schematic diagram of the connection structure between the injection pipe and the rotating shaft provided by this utility model;

[0017] Figure 4 This is a partial cross-sectional structural diagram provided in this utility model.

[0018] In the diagram, 1 is the tank; 2 is the drive motor; 21 is the stirring rod; 22 is the rotating shaft; 3 is the spray pipe; 31 is the spray hole; 4 is the delivery pipe; 41 is the pump body; 5 is the timer; 6 is the controller; and 7 is the rotary joint. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] Reference Figures 1-4As shown, the liquid chromium-reducing agent anti-sedimentation device includes a stirring mechanism for stirring the liquid chromium-reducing agent in the tank 1. The stirring mechanism includes a drive motor 2 and multiple sets of stirring rods 21. The multiple sets of stirring rods 21 are connected to a rotating shaft 22 connected to the output end of the drive motor 2. The drive motor 2 drives the stirring rods 21 to rotate in the tank 1, stirring the liquid chromium-reducing agent to form a circulation and vortex. A spray pipe 3 is provided in the middle of the rotating shaft 22, and a spray hole 31 is opened on the spray pipe 3. The rotating shaft 22 is designed as a hollow structure. The lower end of the tank 1 is connected to the rotating shaft 22 through a conveying pipe 4. A pump body 41 is provided on the conveying pipe 4 to pump the liquid chromium-reducing agent from the bottom of the tank 1 to the rotating shaft 22, so that the liquid chromium-reducing agent is sprayed out from the spray hole 31 on the spray pipe 3 and rotates on the rotating shaft 22. A rotary joint 7 is connected, and the output end of the conveying pipe 4 passes through and is fixedly connected to the rotary joint 7. On the one hand, this does not affect the rotation of the rotating shaft 22, and on the other hand, it ensures that the conveying pipe 4 can stably deliver liquid chromium-reducing agent into the injection pipe 3. The injected liquid chromium-reducing agent will generate new flow fields at different positions and angles, which will be superimposed with the circulation and eddies generated by the stirring mechanism, thereby enhancing the overall mixing effect of the liquid chromium-reducing agent, making the particles in the liquid chromium-reducing agent more evenly dispersed, reducing the chance of sedimentation. In addition, the liquid pumped from the bottom usually contains more particles that may precipitate. By spraying this part of the liquid chromium-reducing agent through the injection pipe 3, the high-speed injection of liquid has a certain impact force, which can break up the particles that have begun to gather or precipitate, so that they are resuspended in the liquid chromium-reducing agent, avoiding the formation and accumulation of sediment.

[0021] Reference Figure 4 As shown, the injection pipes 3 are further divided into two sets, with the injection holes 31 on the upper injection pipe 3 opening upwards and the injection holes 31 on the lower injection pipe 3 opening downwards. Both sets of injection pipes 3 are located in the middle of the axial direction of the rotating shaft 22, allowing for upward and downward spraying from the middle of the tank 1. This avoids the unit being blocked by the liquid chromium reducing agent at the top or bottom, which would affect the turbulence effect. At the same time, the upward and downward injection holes 31 allow the liquid chromium reducing agent to flow in different directions, creating a complex flow field. The downward-sprayed liquid chromium reducing agent can directly impact the liquid below, promoting the flow and mixing of the liquid chromium reducing agent at the bottom. The upward-sprayed liquid chromium reducing agent will interact with the liquid chromium reducing agent above, forming vertical convection, effectively enhancing the overall stirring effect, improving the mixing uniformity of the liquid chromium reducing agent, and thus better preventing sedimentation.

[0022] Reference Figure 4As shown, furthermore, due to gravity, particulate matter in liquid chromium reducing agent tends to settle downwards, and sedimentation is more likely to occur at the bottom of the container. The density of the injection holes 31 on the lower injection pipe 3 is greater than that on the upper injection pipe 3. Increasing the density of the injection holes 31 on the lower injection pipe 3 allows more liquid chromium reducing agent to be sprayed out from these injection holes 31, which generates a stronger impact and disturbance on the liquid chromium reducing agent at the bottom. This effectively disperses the sediment that has already formed or is forming at the bottom, allowing it to be resuspended in the liquid and preventing further accumulation of sediment.

[0023] Reference Figure 3 As shown in Figure 4, the spray pipe 3 and the stirring rod 21 are further offset to prevent the liquid chromium-reducing agent sprayed from the spray hole 31 from directly impacting the stirring rod 21, affecting the spray path, and reducing the kinetic energy loss of the liquid chromium-reducing agent.

[0024] Reference Figure 2 As shown, further, it also includes a timing mechanism for starting the stirring mechanism and pump body 41 according to a preset time interval. The timing mechanism includes a timer 5 and a controller 6. The timer 5 is used to set the start time and running time. The controller 6 controls the start and stop of the drive motor 2 and pump body 41 according to the setting signal of the timer 5. The timer 5 can be a digital timer 5, which has an intuitive operation interface. Users can easily set the start time and running time of the stirring device by pressing the buttons. By realizing the set start and stop time, the drive motor 2 and pump body 41 are started to stir the liquid chromium reducing agent to prevent sedimentation. This avoids unnecessary running time of the stirring mechanism and bottom pumping device, reduces energy waste, and lowers production costs. At the same time, after realizing the timed start and stop, the entire chromium reducing process can run automatically according to the preset time, without the need for frequent manual operation of the start and stop buttons, reducing labor intensity and improving the automation level of the production process.

Claims

1. A device for preventing sedimentation of liquid chromium-reducing agent, characterized in that, The system includes a stirring mechanism for stirring the liquid chromium-reducing agent in the tank (1). The stirring mechanism includes a drive motor (2) and multiple sets of stirring rods (21). The multiple sets of stirring rods (21) are connected to a rotating shaft (22) connected to the output end of the drive motor (2). The rotating shaft (22) is a hollow structure. The middle part of the rotating shaft (22) is provided with a spray pipe (3) that communicates with the hollow part of the rotating shaft (22). The spray pipe (3) is provided with a spray hole (31). The lower end of the tank (1) is connected to the rotating shaft (22) by a conveying pipe (4). The conveying pipe (4) is provided with a pump body (41) for conveying the liquid chromium-reducing agent in the tank (1) to the spray pipe (3) for spraying.

2. The liquid chromium-reducing agent anti-precipitation device according to claim 1, characterized in that, The spray pipes (3) are in two sets, with the spray holes (31) on the upper spray pipe (3) opening upwards and the spray holes (31) on the lower spray pipe (3) opening downwards.

3. The liquid chromium-reducing agent anti-precipitation device according to claim 2, characterized in that, The density of the injection holes (31) on the lower injection pipe (3) is greater than the density of the injection holes (31) on the upper injection pipe (3).

4. The liquid chromium-reducing agent anti-precipitation device according to claim 1, characterized in that, The spray pipe (3) and the stirring rod (21) are staggered.

5. The liquid chromium-reducing agent anti-precipitation device according to claim 1, characterized in that, It also includes a timing mechanism for starting the stirring mechanism and the pump body (41) at preset time intervals. The timing mechanism includes a timer (5) and a controller (6). The timer (5) is used to set the start time and running time. The controller (6) controls the start and stop of the drive motor (2) and the pump body (41) according to the setting signal of the timer (5).

6. The liquid chromium-reducing agent anti-precipitation device according to claim 1, characterized in that, A rotary joint (7) is sealed and rotatably connected to the rotating shaft (22), and the output end of the conveying pipe (4) passes through the rotary joint (7) and is fixedly connected to the rotary joint (7).

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