Sludge deposition prevention device for hot water tank

Abstract

The utility model provides a sludge deposition prevention device for a hot water tank, relates to the technical field of chemical containers, and solves the technical problems that in the existing Bayer oxidation method, the hot water tank is easy to block due to higher solid content, the cleaning frequency is higher, and manpower and material resources are consumed. The washing machine comprises a barrel-shaped hot water tank used for storing washing hot water, wherein an input port used for inputting hot water is formed in the bottom of the hot water tank; the input port is tangent to the drum surface of the hot water tank, and the output direction of the input port is consistent with the deflection direction of Coriolis force. Through the design of the input port and the spiral coil plate, a strong eddy current effect is formed, the stirring and mixing capacity of water is enhanced, and solid accumulation and blockage in hot water are prevented; the cleaning frequency is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical container technology, and more specifically, to a device for preventing mud accumulation in a hot water tank. Background Technology

[0002] In the Bayer process for alumina production, red mud washing is a crucial step. The pressure-cooked slurry has a high alumina concentration. To facilitate red mud settling and separation, and subsequent seed crystal decomposition, red mud washing liquid is first added to dilute the slurry. Then, a settling tank is used to separate the red mud from the sodium aluminate solution. After separation, the red mud undergoes several washes to recover any attached alkali before being discharged to a red mud stockpile. The red mud from the diluted slurry, after liquid-solid separation, is washed using hot water from a hot water tank. The hot water in the tank contains circulating water, fresh water, wastewater from thermal power plants, evaporation red mud washing water, pressure filter filtrate, pre-desiliconization condensate, and various steam condensates, with an average solids content of approximately 0.2 g / L. The hot water tank is prone to severe mud accumulation, significantly impacting hot water flow in production; therefore, it must be cleaned regularly in advance.

[0003] Therefore, a waste steam utilization system for hot water tanks in alumina production, as proposed in patent publication CN219546716U, uses a cleaning device to clean the heat exchanger, preventing scale buildup and blockage in the internal pipes and improving heat exchange efficiency. This system utilizes the heat exchanger to recover heat from the hot water tank, addressing issues prone to blockage with a cleaning device. However, for hot water tanks with high solids content, frequent cleaning is necessary, consuming significant manpower and resources. Utility Model Content

[0004] The purpose of this invention is to provide a device to prevent sludge accumulation in hot water tanks, so as to solve the technical problems of high solid content in hot water tanks in the existing Bayer oxidation process, which easily leads to clogging, high cleaning frequency, and high consumption of manpower and resources.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] A device for preventing mud accumulation in a hot water tank includes a cylindrical hot water tank for storing hot water for washing. The bottom of the hot water tank is provided with an inlet for inputting hot water. The inlet is tangent to the cylindrical surface of the hot water tank and the output direction is consistent with the deflection direction of the Coriolis force.

[0007] The Coriolis force, generated by the Earth's rotation, is one of the important factors influencing atmospheric and oceanic motion. The Coriolis force is a virtual force that causes objects to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. That is, it creates counter-clockwise eddies in the Northern Hemisphere and clockwise eddies in the Southern Hemisphere.

[0008] Preferably, the hot water tank is further provided with an outlet for discharging hot water, and the outlet is connected to an output pipe for connecting to a red mud washing device.

[0009] Preferably, the output port is located at a position where the bottom horizontal plane of the hot water tank is higher than the input port.

[0010] Preferably, the bottom of the hot water tank is further provided with a spiral plate to enhance the eddy current; the inlet of the spiral plate is connected to the input port, and the spiral direction is consistent with the direction of the Coriolis force.

[0011] Preferably, it also includes a buffer tank connected to the hot water tank for centralized collection of hot water, and the buffer tank is provided with a delivery pipe connected to the input port for conveying the collected hot water.

[0012] Preferably, several groups of hot water tanks are arranged in parallel, the delivery pipe is connected to adjacent hot water tanks, and the inlet directions of the adjacent hot water tanks are opposite.

[0013] Preferably, the buffer tank is further provided with a buffer pump for conveying hot water, an outlet valve for controlling the output of the buffer pump, a distribution valve for controlling the diversion and flow direction switching of hot water, and a feed valve for controlling the material conveying into the hot water tank.

[0014] This technical solution employs an inlet tangential to the surface of the hot water tank, with the output direction aligned with the Coriolis force's deflection direction. This allows the incoming hot water to form a stable vortex within the tank, effectively preventing sediment and suspended solids from settling and reducing sludge accumulation. A spiral plate at the bottom of the tank, with its spiral direction aligned with the Coriolis force, further enhances the vortex effect, ensuring that sediment and suspended solids remain suspended in the water and are less prone to settling. The design of the inlet and spiral plate creates a strong vortex effect, enhancing the water's stirring and mixing capabilities and preventing solid buildup and blockage in the hot water.

[0015] The hot water tanks are connected via buffer tanks and delivery pipes, enabling the recycling of hot water, reducing the consumption of fresh hot water, and saving energy. Several groups of hot water tanks are arranged in parallel, with the inlet ports of each group facing opposite directions. This ensures that the load is evenly distributed among the multiple hot water tanks, improving the system's stability and reliability.

[0016] The design prevents sludge buildup, reducing the risk of blockages in the hot water tank and pipes, lowering cleaning and maintenance workload, and improving system safety and reliability. The system design can integrate a wastewater treatment unit to treat wastewater generated during the washing process, ensuring it meets discharge standards and minimizing environmental impact. The spiral plate and inlet design prevent sludge and suspended solids from settling, reducing cleaning frequency and maintenance costs.

[0017] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0018] 1. This utility model, through the design of the inlet and spiral plate, creates a strong vortex effect, which enhances the stirring and mixing ability of water and prevents solids from accumulating and clogging in hot water;

[0019] 2. This utility model system evenly distributes the load among multiple hot water tanks, improving the stability and reliability of the system;

[0020] 3. This utility model reduces the cleaning frequency and lowers maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a hot water tank anti-deposition device provided in Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the spiral plate structure of a hot water tank anti-deposition device provided in Embodiment 1 of the present invention;

[0024] Figure 3 This is a top view of a hot water tank anti-deposition device provided in Embodiment 2 of the present invention;

[0025] Icons: 1. Hot water tank; 11. Inlet; 12. Spiral plate; 13. Outlet; 2. Buffer tank; 3. Conveying pipe; 4. Outlet pipe; 5. Buffer pump; 6. Outlet valve; 7. Distributing valve; 8. Feed valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1

[0032] A device for preventing mud accumulation in a hot water tank includes a cylindrical hot water tank 1 for storing hot water for washing. The bottom of the hot water tank 1 is provided with an inlet 11 for inputting hot water. The inlet 11 is tangent to the cylindrical surface of the hot water tank 1 and the output direction is consistent with the deflection direction of the Coriolis force.

[0033] In this embodiment, the hot water tank 1 is also provided with an output port 13 for outputting hot water, and the output port 13 is connected to an output pipe 4 for connecting to a red mud washing device.

[0034] In this embodiment, the output port 13 is located at a position where the bottom horizontal plane of the hot water tank 1 is higher than the input port 11.

[0035] In this embodiment, the bottom of the hot water tank 1 is also provided with a spiral plate 12 to enhance the eddy current; the inlet of the spiral plate 12 is connected to the input port 11, and the spiral direction is consistent with the direction of the Coriolis force.

[0036] In this embodiment, a buffer tank 2 connected to the hot water tank 1 for centralized collection of hot water is also included. The buffer tank 2 is provided with a delivery pipe 3 connected to the input port 11 for conveying the collected hot water.

[0037] In this embodiment, several groups of hot water tanks 1 are arranged in parallel, and the conveying pipe 3 is connected to adjacent hot water tanks 1. The inlet 11 of the adjacent hot water tanks 1 are in opposite directions.

[0038] Working principle and usage:

[0039] During operation, the inlet 11 is positioned tangentially to the cylindrical surface of the hot water tank 1, and the output direction is aligned with the deflection direction of the Coriolis force. This allows the incoming hot water to form a stable vortex within the hot water tank 1, effectively preventing sediment and suspended solids from settling and reducing sludge accumulation. A spiral plate 12 is located at the bottom of the hot water tank 1, with the spiral direction aligned with the Coriolis force, further enhancing the vortex effect and ensuring that sediment and suspended solids remain suspended in the water, preventing them from settling. The design of the inlet 11 and the spiral plate 12 creates a strong vortex effect, enhancing the water's stirring and mixing capabilities and preventing solid buildup and blockage in the hot water.

[0040] Hot water tank 1 is connected to buffer tank 2 and delivery pipe 3, enabling the recycling of hot water, reducing the consumption of fresh hot water, and saving energy. Several groups of hot water tanks 1 are arranged in parallel, with the inlet 11 of each group of hot water tanks 1 facing opposite directions. This ensures that the load is evenly distributed among the multiple hot water tanks 1, improving the stability and reliability of the system.

[0041] Example 2

[0042] The only difference between this embodiment and embodiment 1 is that, in this embodiment, the buffer tank 2 is further provided with a buffer pump 5 for conveying hot water, an outlet valve 6 for controlling the output of the buffer pump 5, a distribution valve 7 for controlling the diversion and flow direction switching of hot water, and a feed valve 8 for controlling the material conveying into the hot water tank 1.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preventing sedimentation of dirt in a hot water tank, comprising a cylindrical hot water tank (1) for storing washing hot water, characterized in that: The hot water tank (1) is provided with an input port (11) for inputting hot water at the bottom; the input port (11) is tangent to the cylindrical surface of the hot water tank (1) and the output direction is consistent with the deflection direction of the Coriolis force; The hot water tank (1) is further provided with a spiral coil plate (12) for enhancing the vortex at the bottom; the inlet of the spiral coil plate (12) is communicated with the input port (11) and the spiral direction is consistent with the direction of the Coriolis force; The hot water tank anti-sediment device further comprises a buffer tank (2) communicated with the hot water tank (1) for collecting hot water; the buffer tank (2) is provided with a conveying pipe (3) communicated with the input port (11) for conveying the collected hot water; The hot water tank (1) is arranged in parallel in several groups; the conveying pipe (3) is connected with adjacent hot water tanks (1); the input ports (11) of the adjacent hot water tanks (1) are in opposite directions.

2. The device according to claim 1, wherein: The hot water tank (1) is further provided with an output port (13) for outputting hot water; the output port (13) is communicated with an output pipe (4) for connecting a red mud washing device.

3. A device for preventing sediment accumulation in a hot water tank according to claim 2, characterized in that: The output port (13) is arranged at a position higher than the input port (11) at the bottom of the hot water tank (1).

4. The device according to claim 3, wherein: The buffer tank (2) is further provided with a buffer pump (5) for conveying hot water, an outlet valve (6) for controlling the output of the buffer pump (5), a material distribution valve (7) for controlling the distribution and flow direction of hot water, and a feeding valve (8) for controlling the feeding of materials into the hot water tank (1).

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