A simplified fluid bed apparatus for homogeneous and efficient crystallization

Abstract

The utility model relates to a kind of homogenization high-efficiency crystallization's simplified fluidized bed device, relate to water treatment equipment technical field, including tank body, the inside lower end of tank body is equipped with porous water distribution plate, the inside upper end of tank body is equipped with crystallization carrier assembly, the bottom of crystallization carrier assembly is equipped with dosing device;Dosing device includes the shell body fixed in the bottom of crystallization carrier assembly, the medicine storage cartridge in the shell body, multiple along the circumferentially uniform distribution in the medicine storage cartridge four around dosing unit and the stirring paddle of rotation sleeve set in the shell body;Stirring paddle is rotated with the help of ascending fluid in tank body, to drive dosing unit to extract the medicament in medicine storage cartridge and discharge medicament to the fluid in tank body.The device is provided with dosing device with paddle, the mode of using ascending fluid to drive dosing device to rotate dosing, ingeniously saves traditional stirring device, reduce cost, while it can realize more sufficient mixing of medicament and raw water, improve the crystallization effect and water quality treatment quality of equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of water treatment equipment, specifically a simplified fluidized bed device for homogeneous and efficient crystallization. Background Technology

[0002] Fluidized bed water treatment equipment is a device that utilizes a gas or liquid passing through a layer of granular solids, causing the solid particles to be in a suspended state and undergoing liquid-solid phase reactions. It is widely used in the field of water treatment. When a fluid (gas or liquid) passes through a layer of granular solids at a certain velocity, as the flow rate increases, the solid particles gradually change from a static state to a suspended state, forming a state similar to a fluid, i.e., fluidization. When the flow rate reaches the critical fluidization velocity, the particles begin to loosen and suspend, the bed height increases significantly, and the particle porosity also increases. In the fluidized state, the solid particles are in full contact with the fluid, greatly increasing the contact area between the liquid and solid phases, thereby enhancing the mass and heat transfer processes and achieving the purpose of removing pollutants and purifying water quality.

[0003] In water treatment, hard water containing high-hardness ions (such as calcium and magnesium ions) often needs to be removed through crystallization to prevent problems such as pipe scaling and equipment damage. Traditional fluidized bed crystallization devices typically use dosing pumps to add chemicals. However, the addition of chemicals is difficult to adapt to the flow rate of the fluidized bed, and the mixing of chemicals and fluid may not be uniform enough, resulting in excessively high chemical concentrations in some areas and insufficient concentrations in others. This unevenness may lead to unsatisfactory crystallization results and affect the softening effect of the fluid. Therefore, a dedicated stirring device is generally required to ensure that the chemicals and water are fully mixed to promote the crystallization reaction. However, the stirring device not only increases the complexity and cost of the equipment but also requires additional power consumption. At the same time, the maintenance and upkeep of the stirring device also increases operating costs and management difficulties.

[0004] To address these issues, we provide a simplified fluidized bed apparatus for homogeneous and efficient crystallization. Utility Model Content

[0005] The purpose of this invention is to address the problems in the prior art by providing a simplified fluidized bed device for homogeneous and efficient crystallization.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A simplified fluidized bed device for homogeneous and efficient crystallization includes a tank. A porous water distribution plate is located at the lower end of the tank's interior. A crystallization carrier assembly is located at the upper end of the tank's interior. A dosing device is located at the bottom of the crystallization carrier assembly. The dosing device includes an outer shell fixed to the bottom of the crystallization carrier assembly, a storage cylinder located within the outer shell, multiple dosing units evenly distributed around the storage cylinder along its circumference, and a stirring paddle rotatably mounted on the outer shell. The stirring paddle rotates with the help of the rising fluid within the tank to drive the dosing units to extract the reagent from the storage cylinder and discharge the reagent into the fluid within the tank. The stirring paddle also mixes the reagent with the raw water uniformly.

[0008] As a further optimization of this utility model, a raw water inlet pipe is provided on the lower side of the tank, and a softened water outlet pipe is provided on the upper side of the tank.

[0009] As a further optimization of this utility model, the top of the outer shell is provided with a support for fixed installation, the outer wall of the outer shell is provided with an annular groove, and the inner wall of the stirring paddle is provided with an annular slide rail that cooperates with the annular groove.

[0010] As a further optimization of this utility model, the stirring paddle includes a main body and multiple blade bodies uniformly fixed on the outer wall of the main body along the circumference; the bottom of the main body is provided with a conical part to guide the flow of fluid, and the inner wall of the main body is provided with multiple first wedge-shaped blocks corresponding one-to-one with the dosing unit.

[0011] As a further optimization of this utility model, the dosing unit includes an air bladder; an inlet pipe and an outlet pipe are respectively provided on both sides of the air bladder, and a one-way valve is provided on both the inlet pipe and the outlet pipe. The inlet pipe is connected to the storage cylinder, and the outlet pipe extends to the bottom of the dosing device; a fixed seat is provided on the side of the air bladder and fixed to the outer shell. A movable rod is provided through the fixed seat. A pressure plate for squeezing the air bladder is fixedly provided at one end of the movable rod. The pressure plate is fixedly connected to the air bladder. A second wedge block that cooperates with the first wedge block is fixedly provided at the other end of the movable rod. A spring for resetting is sleeved on the movable rod between the second wedge block and the fixed seat.

[0012] As a further optimization of this utility model, the medicine storage cylinder is divided into a first medicine storage cavity and a second medicine storage cavity by a partition plate assembly. The top of the first medicine storage cavity is provided with a first medicine input pipe, and the top of the second medicine storage cavity is provided with a second medicine input pipe.

[0013] As a further optimization of this utility model, the partition plate assembly includes a fixed partition plate and a movable partition plate rotatably disposed within the outer shell; liquid level sensors are fixedly mounted on both sides of the fixed partition plate, the rotating shaft of the movable partition plate coincides with the axis of the outer shell, the top of the rotating shaft of the movable partition plate is provided with a bearing seat and a gear for supporting its rotation, a rack is provided on the side of the gear for meshing with it, and an adjusting rod is fixedly mounted on the end of the rack; a guide sleeve for the adjusting rod to pass through is fixedly mounted on the outer wall of the tank, and a set screw knob for locking the adjusting rod is provided on the guide sleeve.

[0014] As a further optimization of this utility model, the surface of the adjusting rod is provided with a scale, and the adjusting rod is used to control its length extending into the tank to adjust the relative size of the first drug storage cavity and the second drug storage cavity, so as to adjust the addition ratio of the first drug and the second drug.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model cleverly eliminates the need for a traditional stirring device by using a dosing device with paddles to rotate and add chemicals using rising fluid. This not only reduces the purchase cost of the stirring device but also lowers the electricity consumption cost required for its operation. Driven by the rising fluid, the dosing device with paddles can rotate continuously and stably within the crystallization area, allowing the chemicals to be evenly dispersed in the raw water. This enables more thorough mixing of the chemicals and the raw water, effectively improving the utilization rate of the chemicals, promoting the efficient crystallization reaction, and enhancing the crystallization effect and water treatment quality of the equipment.

[0017] 2. This utility model, by setting multiple air-bag-type dosing units evenly distributed around the storage cylinder, can further improve the dosing effect of the dosing device, so that the liquid dosing device can flow into the fluid more evenly, and also allows the dosing device to adapt to the fluid flow rate, reduce the amount of reagents (such as precipitant sodium carbonate), achieve homogeneous crystallization, and achieve homogeneous crystal growth by controlling supersaturation, without the need to add heterogeneous crystal seeds, while removing temporary and permanent hardness, producing high-purity calcium carbonate crystal beads.

[0018] 3. This utility model allows for the adjustment of the size of the storage chambers for the two chemicals within the storage cylinder by setting a partition plate assembly inside the storage cylinder, thereby adjusting the addition ratio of the two chemicals to meet the treatment requirements of different raw waters. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the dosing device structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the outer shell structure of the dosing device of this utility model;

[0022] Figure 4 This is a schematic diagram of the stirring paddle structure of the dosing device of this utility model;

[0023] Figure 5 This is a schematic diagram of the dosing unit structure of the dosing device of this utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the drug storage cylinder of the drug dispenser of this utility model;

[0025] Figure 7 This is a schematic diagram of the partition plate assembly inside the medicine storage cylinder of this utility model.

[0026] In the picture:

[0027] 1. Tank body; 101. Raw water inlet pipe; 102. Softened water outlet pipe; 103. Perforated water distribution plate; 104. Crystallization carrier assembly; 105. Guide sleeve; 2. Dosing device; 201. Outer shell; 201a. Support; 201b. Annular chute; 202. Chemical storage cylinder; 202a. First chemical input pipe; 202b. Second chemical input pipe; 202c. Fixed partition; 202d. Movable partition; 202e. Liquid level sensor; 202f. Bearing seat ; 202g, gear; 202h, rack; 202i, adjusting rod; 202j, scale; 203, dosing unit; 203a, airbag; 203b, inlet pipe; 203c, outlet pipe; 203d, one-way valve; 203e, fixed seat; 203f, movable rod; 203g, pressure plate; 203h, second wedge block; 203i, spring; 204, stirring paddle; 204a, main body; 204b, paddle body; 204c, first wedge block. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] Example 1

[0030] To address the issue that existing crystallization fluidized beds typically use dosing pumps and other equipment to add reagents, it's difficult to adapt the reagent addition to the fluid flow rate within the fluidized bed. Furthermore, the mixing of the reagent and fluid may be uneven, resulting in some areas having excessively high reagent concentrations while others are insufficient. This unevenness can lead to unsatisfactory crystallization results and affect the fluid softening effect. Please refer to [link to relevant documentation]. Figures 1-4This utility model provides a simplified fluidized bed device for homogeneous and efficient crystallization, comprising a tank 1, a raw water inlet pipe 101 on the lower side of the tank 1, a softened water outlet pipe 102 on the upper side of the tank 1, a porous water distribution plate 103 at the lower end of the interior of the tank 1, a crystallization carrier assembly 104 at the upper end of the interior of the tank 1, and a dosing device 2 at the bottom of the crystallization carrier assembly 104; the dosing device 2 includes an outer shell 201 fixed to the bottom of the crystallization carrier assembly 104, and a dosing device located on the outer shell 201. The tank 1 contains a storage cylinder 202, multiple dosing units 203 evenly distributed around the storage cylinder 202, and a stirring paddle 204 rotatably mounted on the outer shell 201. The outer shell 201 and the stirring paddle 204 are both made of corrosion-resistant materials. The stirring paddle 204 is used to rotate by the rising fluid in the tank 1 to drive the dosing units 203 to draw out the medicine in the storage cylinder 202 and discharge the medicine into the fluid in the tank 1. The stirring paddle 204 is also used to mix the medicine with the raw water evenly.

[0031] The top of the outer shell 201 is provided with a support 201a for fixed installation, and the outer wall of the outer shell 201 is provided with an annular groove 201b. The inner wall of the stirring paddle 204 is provided with an annular slide rail that cooperates with the annular groove 201b.

[0032] The stirring paddle 204 includes a main body 204a and multiple blade bodies 204b uniformly fixed along the circumference of the outer wall of the main body 204a; the bottom of the main body 204a is provided with a conical part to guide the flow of fluid. The conical part can guide the flow direction of the fluid, so that the fluid forms a more reasonable flow field distribution under the action of the blade bodies 204b. When the blade bodies 204b rotate, the conical part can guide the fluid in all directions, improve the rotation effect and stirring efficiency of the stirring paddle 204, and enable the agent to diffuse and distribute more evenly in the fluid. It can quickly bring the agent to all corners, fully contact the impurities in the fluid, and accelerate the reaction.

[0033] The raw hard water to be treated enters the tank 1 through the raw water inlet pipe 101. The perforated water distribution plate 103 evenly distributes the hard water to various locations within the tank 1, ensuring uniform fluidization of the crystallization carrier assembly 104. The stirring paddle 204 rotates under the impact of the hard water, driving the dosing unit 203 to extract the reagent from the storage tank 202 and discharge it into the fluid within the tank 1, mixing the reagent evenly with the raw water. This method of using the rising fluid to drive the dosing device 2 to rotate and add reagent cleverly eliminates the need for a traditional stirring device, reducing both the purchase cost of the stirring device and the electricity required for its operation. The dosing device 2 with paddles, driven by the rising fluid, can rotate continuously and stably within the crystallization zone, ensuring uniform dispersion of the reagent in the raw water. This allows for more thorough mixing of the reagent and the raw water, effectively improving reagent utilization and promoting efficient crystallization. The crystallization reaction can proceed under more favorable conditions, allowing the seed crystals to fully contact the reacting ions, accelerating the nucleation and growth process. Simultaneously, the fluidization state within the fluidized bed ensures sufficient contact between the seed crystals, crystal particles, and water, further improving crystallization efficiency and shortening treatment time, thereby enhancing the crystallization effect and water treatment quality of the equipment.

[0034] Example 2

[0035] Based on Example 1, in order to further improve the dosing effect of the dosing device 2 and to match the dosing device 2 with the fluid flow rate, such as... Figures 4-5 As shown, the dosing unit 203 includes an air bladder 203a, which is made of a highly elastic material. When the external force is released, the air bladder 203a will return to its original shape. The air bladder 203a is provided with an inlet pipe 203b and an outlet pipe 203c on both sides. Both the inlet pipe 203b and the outlet pipe 203c are provided with a one-way valve 203d. The inlet pipe 203b is connected to the drug storage cylinder 202, and the outlet pipe 203c extends to the bottom of the dosing device 2.

[0036] The airbag 203a has a fixed seat 203e on the side of the outer shell 201. A movable rod 203f passes through the fixed seat 203e. One end of the movable rod 203f is fixed with a pressure plate 203g for squeezing the airbag 203a. The pressure plate 203g is fixedly connected to the airbag 203a. The other end of the movable rod 203f is fixed with a second wedge block 203h. A spring 203i for resetting is sleeved on the movable rod 203f between the second wedge block 203h and the fixed seat 203e. The inner wall of the main body 204a has a plurality of first wedge blocks 204c corresponding one-to-one with the drug delivery unit 203. The first wedge blocks 204c match the second wedge blocks 203h.

[0037] During the rotation of the main body 204a, the first wedge block 204c rotates. When the first wedge block 204c rotates to the position of the second wedge block 203h, it squeezes the second wedge block 203h. The second wedge block 203h drives the movable rod 203f to move inward. At this time, the spring 203i is compressed. The movable rod 203f drives the pressure plate 203g to squeeze the airbag 203a. The internal pressure of the airbag 203a increases, pushing the medicine inside to flow out through the medicine outlet pipe 203c and mix into the fluid in the tank 1. As the main body 204a continues to rotate, when the first wedge block 204c separates from the second wedge block 203h, under the restoring force of the spring 203i, the movable rod 203f drives the pressure plate 203g moves outward, and the airbag 203a recovers. During the recovery process, a negative pressure is formed inside, and the medicine in the storage cylinder 202 is drawn into the airbag 203a through the medicine inlet tube 203b. The fluid drives the main body 204a to rotate. The faster the fluid speed, the faster the rotation speed of the main body 204a, and the faster the dosing frequency of the dosing unit 203. This makes the dosing device 2 match the fluid flow rate, realizes the precise release of the medicine, optimizes the mixing effect, reduces the amount of medicine (such as the precipitant sodium carbonate), and achieves homogeneous crystallization. By controlling the supersaturation, homogeneous crystal growth is achieved without the need to add heterogeneous crystal seeds. At the same time, temporary and permanent hardness are removed, and high-purity calcium carbonate crystal beads are produced.

[0038] Example 3

[0039] Based on Examples 1 and 2, in order to facilitate the addition of different types of reagents to meet the treatment requirements of different raw waters, such as... Figures 6-7 As shown, the storage cylinder 202 is divided into a first chemical storage chamber and a second chemical storage chamber by a partition plate assembly. The top of the first chemical storage chamber is provided with a first chemical inlet pipe 202a, and the top of the second chemical storage chamber is provided with a second chemical inlet pipe 202b. Chemicals are periodically added to the chambers through the first chemical inlet pipe 202a and the second chemical inlet pipe 202b. The first and second chemicals can be adjusted according to the actual situation, such as flocculants, disinfectants, acid-base regulators, etc., to assist in completing the water treatment process.

[0040] The partition assembly includes a fixed partition 202c and a movable partition 202d rotatably disposed within the outer casing 201. The movable partition 202d and the fixed partition 202c, as well as the movable partition 202d and the outer casing 201, have good sealing properties, such as being covered with an elastic soft package, to prevent mixing of different agents and affecting the purity and performance of the agents. Liquid level sensors 202e are fixedly installed on both sides of the fixed partition 202c. The axis of rotation of the movable partition 202d coincides with the axis of rotation of the outer casing 201, and the top of the axis of rotation of the movable partition 202d is provided with a shaft to support its rotation. The tank 202f and gear 202g are provided. A rack 202h meshes with the gear 202g on its side. An adjusting rod 202i is fixedly provided at the end of the rack 202h. A guide sleeve 105 for the adjusting rod 202i to pass through is fixedly provided on the outer wall of the tank 1. A set screw knob for locking the adjusting rod 202i is provided on the guide sleeve 105. A scale 202j is provided on the surface of the adjusting rod 202i. The adjusting rod 202i is used to control its length of insertion into the tank 1 to adjust the relative size of the first drug storage cavity and the second drug storage cavity, so as to adjust the addition ratio of the first drug and the second drug.

[0041] When it is necessary to adjust the ratio of the first and second reagent storage chambers, loosen the set screw knob on the guide sleeve 105, pull outward or push inward the adjusting rod 202i, and control the movement distance through the scale 202j. The adjusting rod 202i drives the rack 202h to move, the rack 202h drives the gear 202g to rotate, and the gear 202g drives the movable partition 202d to rotate, thereby adjusting the ratio of the first and second reagent storage chambers. Since multiple dosing units 203 are evenly distributed around the storage cylinder 202, the type of reagent absorbed by each dosing unit 203 can be indirectly adjusted, thus adjusting the addition ratio of the first and second reagents to adapt to the treatment requirements of different raw waters.

[0042] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A simplified fluidized bed device for homogeneous and efficient crystallization, comprising a tank (1), wherein a porous water distribution plate (103) is provided at the lower end of the interior of the tank (1), and a crystallization carrier assembly (104) is provided at the upper end of the interior of the tank (1), characterized in that: The bottom of the crystallization carrier assembly (104) is provided with a dosing device (2); The dosing device (2) includes an outer shell (201) fixed to the bottom of the crystallization carrier assembly (104), a drug storage cylinder (202) located inside the outer shell (201), a plurality of dosing units (203) evenly distributed around the drug storage cylinder (202) along the circumference, and a stirring paddle (204) rotatably sleeved on the outer shell (201). The stirring paddle (204) is used to rotate by the rising fluid in the tank (1) to drive the dosing unit (203) to draw out the medicine in the storage cylinder (202) and discharge the medicine into the fluid in the tank (1). The stirring paddle (204) is also used to mix the medicine with the raw water evenly.

2. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 1, characterized in that: The tank (1) has a raw water inlet pipe (101) on its lower side and a softened water outlet pipe (102) on its upper side.

3. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 1, characterized in that: The top of the outer shell (201) is provided with a support (201a) for fixed installation, the outer wall of the outer shell (201) is provided with an annular groove (201b), and the inner wall of the stirring paddle (204) is provided with an annular slide rail that cooperates with the annular groove (201b).

4. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 1, characterized in that: The stirring paddle (204) includes a main body (204a) and a plurality of blade bodies (204b) uniformly fixed along the circumference on the outer wall of the main body (204a). The bottom of the main body (204a) is provided with a conical part to guide the flow of fluid, and the inner wall of the main body (204a) is provided with a plurality of first wedge blocks (204c) corresponding one-to-one with the dosing unit (203).

5. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 4, characterized in that: The drug delivery unit (203) includes an airbag (203a); The airbag (203a) is provided with an inlet tube (203b) and an outlet tube (203c) on both sides respectively. Both the inlet tube (203b) and the outlet tube (203c) are provided with a one-way valve (203d). The inlet tube (203b) is connected to the storage cylinder (202), and the outlet tube (203c) extends to the bottom of the dosing device (2). The airbag (203a) has a fixed seat (203e) on the side of the outer shell (201). A movable rod (203f) is provided through the fixed seat (203e). A pressure plate (203g) for squeezing the airbag (203a) is fixedly provided at one end of the movable rod (203f). The pressure plate (203g) is fixedly connected to the airbag (203a). A second wedge block (203h) that cooperates with the first wedge block (204c) is fixedly provided at the other end of the movable rod (203f). A spring (203i) for resetting is sleeved on the movable rod (203f) between the second wedge block (203h) and the fixed seat (203e).

6. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 1, characterized in that: The medicine storage cylinder (202) is divided into a first medicine storage cavity and a second medicine storage cavity by a partition plate assembly. The top of the first medicine storage cavity is provided with a first medicine inlet pipe (202a), and the top of the second medicine storage cavity is provided with a second medicine inlet pipe (202b).

7. A simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 6, characterized in that: The partition assembly includes a fixed partition (202c) and a movable partition (202d) rotatably disposed within the outer casing (201). Liquid level sensors (202e) are fixedly installed on both sides of the fixed partition (202c). The rotating shaft of the movable partition (202d) coincides with the axis of the outer shell (201). The top of the rotating shaft of the movable partition (202d) is provided with a bearing seat (202f) and a gear (202g) for supporting its rotation. A rack (202h) is provided on the side of the gear (202g) and meshes with it. An adjusting rod (202i) is fixedly installed at the end of the rack (202h). The outer wall of the tank (1) is fixedly provided with a guide sleeve (105) for the adjustment rod (202i) to pass through, and the guide sleeve (105) is provided with a set screw knob for locking the adjustment rod (202i).

8. The simplified fluidized bed apparatus for homogeneous and efficient crystallization according to claim 7, characterized in that: The adjusting rod (202i) has a scale (202j) on its surface. The adjusting rod (202i) is used to control the length of its extension into the tank (1) to adjust the relative size of the first drug storage chamber and the second drug storage chamber, so as to adjust the addition ratio of the first drug and the second drug.

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