Stirring and filtering device for preparing silicic acid

Abstract

The utility model discloses a stirring and filtering device for silicic acid preparation, which belongs to the field of silicic acid preparation and comprises a bottom plate, a frame, a reaction component, a discharge pipe, a first valve, a filter box, a filter frame, a stirring component, a spraying component and a water inlet pipe. The discharging pipe is provided with a first valve, the bottom end of the discharging pipe fixedly communicates with the top of the filtering box, a filtering frame is fixed in the filtering box, a stirring assembly is fixed to the top of the filtering box, the stirring end of the stirring assembly extends into the filtering frame, the spraying assembly fixedly communicates with the stirring assembly, and a channel for water to flow is formed in the stirring assembly. The spraying assembly communicates with the channel, and the bottom end of the water inlet pipe extends into the channel. According to the phosphoric acid washing device, phosphoric acid is stirred through the rotating stirring assembly and fully leached through the rotating spraying assembly, the phosphoric acid washing efficiency is greatly improved, and washing is more thorough.

Description

Technical Field

[0001] The utility model belongs to the field of silicate preparation, and in particular relates to a silicate preparation stirring and filtering device. Background Art

[0002] The mother liquor produced by the multi-fluorine-containing waste acid in the chip industry during the production of sodium fluorosilicate has the main components of fluorosilicic acid, sodium fluorosilicate, hydrochloric acid and sodium chloride. Sodium fluorosilicate can be converted into fluorosilicic acid by reacting with hydrochloric acid, and fluorosilicic acid can be hydrolyzed into silicic acid precipitation under acidic conditions. An appropriate amount of hydrochloric acid can be added to the mother liquor to form silicic acid precipitation, and the generated hydrogen fluoride is absorbed by water through vacuum extraction to form hydrofluoric acid. The precipitate is filtered and washed to form relatively pure silicic acid, which is then dried and reacted with caustic soda to synthesize soluble sodium silicate.

[0003] The washing efficiency of the existing method for washing silicate precipitates needs to be improved, and therefore a silicate preparation stirring and filtering device with improved washing efficiency is urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide a stirring and filtering device for preparing silicate, so as to overcome at least one of the above-mentioned defects in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a silicic acid preparation stirring and filtering device, comprising a bottom plate, a frame, a reaction component, a discharge pipe, a first valve, a filter box, a filter frame, a stirring component, a spray component, and a water inlet pipe. The top of the bottom plate is fixed with the frame and the filter box, the filter frame is located at the front side of the frame, the top of the frame is fixed with a reaction component, the bottom of the reaction component is fixedly connected with a discharge pipe, the discharge pipe is provided with a first valve, the bottom end of the discharge pipe is fixedly connected with the top of the filter box, the inside of the filter box is fixed with a filter frame, the filter frame is located below the discharge pipe, the top of the filter box is fixed with a stirring component, the stirring end of the stirring component extends into the filter frame, the spray component is fixedly connected to the stirring component and is located above the filter frame, the inside of the stirring component has a water supply flow channel, the spray component is connected with the channel, the bottom end of the water inlet pipe extends into the channel, and the top of the water inlet pipe is connected with an external water source.

[0007] Preferably, the stirring assembly includes a first motor, a driving wheel, a driven wheel, a transmission belt, a bearing seat, a first rotating shaft, and a first stirring blade. The first motor is fixed to the left side of the top of the filter box, the driving wheel is fixed to the output shaft of the first motor, the bearing seat is fixed to the center position of the top of the filter box, the lower part of the first rotating shaft passes through the bearing seat and the top wall of the filter box, and extends to the filter frame where a plurality of first stirring blades are fixed, the upper part of the first rotating shaft is fixed to the driven wheel, the driven wheel and the driving wheel are connected by a transmission belt, and the channel is arranged inside the first rotating shaft.

[0008] Preferably, a cavity is provided inside the first stirring blade, the cavity is connected to the channel, a plurality of water holes are provided on both the front and rear side walls of the first stirring blade, the water holes are connected to the cavity, and mesh plates are fixed inside the water holes.

[0009] Preferably, a sealing member is provided between the water inlet pipe and the upper portion of the interior of the first rotating shaft.

[0010] Preferably, there are two spray assemblies, which are symmetrically arranged along the center line of the first rotating shaft. The spray assembly includes a water pipe and an atomizing nozzle. The water pipe is fixed to the side wall of the first rotating shaft and connected to the channel. The bottom of the water pipe is fixedly connected to the atomizing nozzle.

[0011] Preferably, the reaction assembly includes a reaction box, a second motor, a second rotating shaft, and a second stirring blade. The reaction box is fixed to the top of the frame, the second motor is fixed to the top of the reaction box, the second rotating shaft is fixed to the bottom end of the second motor, the lower part of the second rotating shaft passes through the top wall of the reaction box and extends to the lower part of the reaction box where a plurality of second stirring blades are fixed, and a seal is arranged between the second rotating shaft and the reaction box.

[0012] Preferably, it also includes a vacuum pump, an air pipe, and an absorption tank. The absorption tank is fixed on the top of the frame, and the top of the reaction box is fixedly connected to the air pipe, the air pipe is provided with a vacuum pump, the absorption tank is filled with water, and the bottom end of the air pipe extends into the water in the absorption tank.

[0013] Preferably, a mesh door is hinged on the bottom of the filter frame, and a box door is hinged on the front side of the filter box.

[0014] Preferably, a feed pipe is fixedly connected to the left side of the top of the reaction box, and the feed pipe is provided with a second valve. A drain pipe is fixedly connected to the lower part of the left side wall of the filter box, and the drain pipe is provided with a third valve.

[0015] The beneficial effects of the utility model are:

[0016] 1. The phosphoric acid is stirred by a rotating stirring component and fully rinsed by a rotating spray component. The combination of the two greatly improves the washing efficiency of phosphoric acid and makes the washing more thorough.

[0017] 2. By arranging water holes in the first stirring blade, water can not only be sprayed from the spray assembly from top to bottom to wash the phosphoric acid, but also be sprayed horizontally from the first stirring blade to directly flush the phosphoric acid in the phosphoric acid pile, which not only plays the role of washing the phosphoric acid, but also plays the effect of water flushing and stirring the phosphoric acid, greatly improving the washing efficiency.

[0018] 3. Prevent phosphoric acid from entering the first stirring blade through the water holes by setting the mesh plate.

[0019] 4. The spraying components that are symmetrically arranged on both sides are combined with the rotating first rotating shaft, so that the spraying is more comprehensive and thorough, and there is no need to set up many spraying components, thereby reducing the manufacturing cost.

[0020] 5. The hydrogen fluoride produced by the reaction is vacuum extracted and absorbed by water to become hydrofluoric acid, thus avoiding environmental pollution caused by waste gas discharge and resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a main structural schematic diagram of the utility model.

[0022] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0023] Figure 3 It is a partial structural schematic diagram of the stirring assembly of the utility model.

[0024] Figure 4 It is a schematic diagram of the matching structure of the stirring component, the water inlet pipe, and the spray component of the utility model.

[0025] The marks in the accompanying drawings are: 1-bottom plate, 2-frame, 3-reaction component, 4-discharge pipe, 5-first valve, 6-filter box, 7-filter frame, 8-stirring component, 9-spray component, 10-water inlet pipe, 81-channel, 82-first motor, 83-driving wheel, 84-driven wheel, 85-transmission belt, 86-bearing seat, 87-first rotating shaft, 88-first stirring blade, 89-cavity, 810-water hole, 811-mesh plate, 812-seal, 91-water guide pipe, 92-atomizing nozzle, 31-reaction box, 32-second motor, 33-second rotating shaft, 34-second stirring blade, 11-vacuum pump, 12-trachea, 13-absorption tank, 14-net door, 15-box door, 16-feed pipe, 17-second valve, 18-drain pipe, 19-third valve. DETAILED DESCRIPTION

[0026] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0027] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] like Figures 1 to 4 As shown, a stirring and filtering device for preparing silicate provided in this embodiment includes a bottom plate 1, a frame 2, a reaction component 3, a discharge pipe 4, a first valve 5, a filter box 6, a filter frame 7, a stirring component 8, a spray component 9, and a water inlet pipe 10. The top of the bottom plate 1 is fixed with the frame 2 and the filter box 6, the filter frame 7 is located on the front side of the frame 2, the top of the frame 2 is fixed with the reaction component 3, the bottom of the reaction component 3 is fixedly connected with the discharge pipe 4, the discharge pipe 4 is provided with the first valve 5, and the bottom end of the discharge pipe 4 is fixedly connected with the top of the filter box 6. A filter frame 7 is fixed inside the filter box 6, and the filter frame 7 is located below the discharge pipe 4. A stirring assembly 8 is fixed on the top of the filter box 6, and the stirring end of the stirring assembly 8 extends into the filter frame 7. A spray assembly 9 is fixedly connected to the stirring assembly 8 and is located above the filter frame 7. The stirring assembly 8 has a channel 81 for water flow inside, and the spray assembly 9 is connected to the channel 81. The bottom end of the water inlet pipe 10 extends into the channel 81, and the top end of the water inlet pipe 10 is connected to an external water source. The external water source of this application is a water tank filled with water, which is pumped by a water pump. A feed pipe 16 is fixedly connected to the left side of the top of the reaction box 31, and the feed pipe 16 is provided with a second valve 17. A drain pipe 18 is fixedly connected to the bottom of the left side wall of the filter box 6, and the drain pipe 18 is provided with a third valve 19. A mesh door 14 is hinged at the bottom of the filter frame 7, and a box door 15 is hinged at the front side of the filter box 6.

[0029] The mother liquor and hydrochloric acid produced by the fluorine-containing waste acid of the wafer industry in the process of producing sodium fluorosilicate are successively added into the reaction assembly 3, and the reaction is carried out in the reaction assembly 3 to produce phosphoric acid precipitation. After a period of reaction, the first valve 5 is opened, and the phosphoric acid precipitation and the reaction liquid enter the filter box 6 through the discharge pipe 4. The phosphoric acid is filtered by the filter frame 7 and trapped in the filter frame 7. The liquid falls to the bottom of the filter box 6 and is discharged through the drain pipe 18. The phosphoric acid staying in the filter frame 7 is rinsed by the spray assembly 9, and a washing treatment is performed on it. In combination with the setting of the stirring assembly 8, the phosphoric acid is stirred, so that the washing is more thorough and efficient, and the spray assembly 9 rotates with the stirring assembly 8, so that the spraying is more comprehensive. In this way, the phosphoric acid is stirred by the rotating stirring assembly 8 and the phosphoric acid is fully rinsed by the rotating spray assembly 9. The combination of the two greatly improves the washing efficiency of phosphoric acid, and the washing is more thorough. After washing, the box door 15 is opened, and then the net door 14 is opened to take out the washed phosphoric acid.

[0030] Wherein, the stirring assembly 8 comprises a first motor 82, a driving wheel 83, a driven wheel 84, a transmission belt 85, a bearing seat 86, a first rotating shaft 87, and a first stirring blade 88. The first motor 82 is fixed on the left side of the top of the filter box 6, and the output shaft of the first motor 82 is fixed with the driving wheel 83. The center position of the top of the filter box 6 is fixed with the bearing seat 86. The lower part of the first rotating shaft 87 passes through the bearing seat 86 and the top wall of the filter box 6, and extends to the filter frame 7 where a plurality of first stirring blades 88 are fixed. The upper part of the first rotating shaft 87 is fixed with a driven wheel 84, and the driven wheel 84 is connected to the driving wheel 83 through a transmission belt 85. The channel 81 is arranged inside the first rotating shaft 87. The first motor 82 rotates, driving the first rotating shaft 87 to rotate, so that the first stirring blade 88 rotates, stirring the phosphoric acid in the filter frame 7, so that it contacts the water more fully. At the same time, water enters the water inlet pipe 10, flows into the channel 81, and enters the spray assembly 9, and the spray assembly 9 sprays water to clean the phosphoric acid.

[0031] Among them, a cavity 89 is provided inside the first stirring blade 88, and the cavity 89 is connected to the channel 81. A plurality of water holes 810 are provided on the front and rear side walls of the first stirring blade 88, and the water holes 810 are connected to the cavity 89. A mesh plate 811 is fixed inside the water holes 810. By providing the water holes 810 in the first stirring blade 88, water can not only be sprayed from the spray assembly 9 from top to bottom to wash the phosphoric acid, but also can be sprayed horizontally from the first stirring blade to directly flush the phosphoric acid in the phosphoric acid pile, which not only plays the role of washing the phosphoric acid, but also plays the role of water flushing and stirring the phosphoric acid, greatly improving the washing efficiency. By providing the mesh plate 811, phosphoric acid is prevented from entering the first stirring blade through the water holes 810.

[0032] A sealing member 812 is provided between the water inlet pipe 10 and the upper portion of the first rotating shaft 87. The sealing member 812 can ensure the normal rotation of the first rotating shaft 87 while providing a sealing function.

[0033] There are two spray assemblies 9, which are symmetrically arranged along the center line of the first rotating shaft 87. The spray assemblies 9 include a water pipe 91 and an atomizing nozzle 92. The water pipe 91 is fixed to the side wall of the first rotating shaft 87 and is connected to the channel 81. The bottom of the water pipe 91 is fixedly connected to the atomizing nozzle 92. The spray assemblies 9 symmetrically arranged in combination with the rotating first rotating shaft 87 make the spraying more comprehensive and thorough, and there is no need to set up many spray assemblies 9, thereby reducing the manufacturing cost. The cleaning water enters the water pipe 91 through the channel 81, enters the atomizing nozzle 92 from the water pipe 91, and is finally sprayed out by the atomizing nozzle 92.

[0034] The reaction assembly 3 includes a reaction box 31, a second motor 32, a second rotating shaft 33, and a second stirring blade 34. The reaction box 31 is fixed to the top of the frame 2. The second motor 32 is fixed to the top of the reaction box 31. The second rotating shaft 33 is fixed to the bottom of the second motor 32. The lower part of the second rotating shaft 33 passes through the top wall of the reaction box 31, and extends to the lower part of the reaction box 31 to fix a plurality of second stirring blades 34. The second rotating shaft 33 is sealed with the reaction box 31. After adding the mother liquor produced by the fluorine-containing waste acid in the wafer industry in the process of producing sodium fluorosilicate into the reaction box 31, the second motor 32 is turned on to drive the second rotating shaft 33 to rotate, so that the second stirring blade 34 rotates, and then hydrochloric acid is added. The mother liquor and hydrochloric acid are stirred and mixed by the second stirring blade 34 to improve the reaction efficiency.

[0035] The system also includes a vacuum pump 11, an air pipe 12, and an absorption tank 13. The absorption tank 13 is fixed on the top of the frame 2, and the air pipe 12 is fixedly connected to the top of the reaction box 31. The air pipe 12 is provided with a vacuum pump 11. The absorption tank 13 is filled with water. The bottom end of the air pipe 12 extends to the water in the absorption tank 13. The hydrogen fluoride produced by the reaction is absorbed into hydrofluoric acid by water after vacuum extraction, thereby avoiding environmental pollution caused by exhaust gas discharge and resource utilization.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stirring and filtering device for preparing silicic acid, characterized in that: It includes a bottom plate, a frame, a reaction component, a discharge pipe, a first valve, a filter box, a filter frame, a stirring component, a spray component, and a water inlet pipe; A frame and a filter box are fixed on the top of the bottom plate, the filter box is located at the front side of the frame, a reaction assembly is fixed on the top of the frame, a discharge pipe is fixedly connected to the bottom of the reaction assembly, and the discharge pipe is provided with a first valve; The bottom end of the discharge pipe is fixedly connected to the top of the filter box, and a filter frame is fixed inside the filter box, and the filter frame is located below the discharge pipe; A stirring assembly is fixed on the top of the filter box, and the stirring end of the stirring assembly extends into the filter frame. The spray assembly is fixedly connected to the stirring assembly and is located above the filter frame. The interior of the stirring assembly has a channel for water flow, and the spray assembly is connected to the channel. The bottom end of the water inlet pipe extends into the channel, and the top end of the water inlet pipe is connected to an external water source.

2. The stirring and filtering device for preparing silicic acid according to claim 1, characterized in that: The stirring assembly includes a first motor, a driving wheel, a driven wheel, a transmission belt, a bearing seat, a first rotating shaft, and a first stirring blade; A first motor is fixed on the left side of the top of the filter box, a driving wheel is fixed to the output shaft of the first motor, a bearing seat is fixed to the center of the top of the filter box, the lower part of the first rotating shaft passes through the bearing seat and the top wall of the filter box, and extends to the filter frame where a plurality of first stirring blades are fixed, a driven wheel is fixed to the upper part of the first rotating shaft, and the driven wheel is connected to the driving wheel through a transmission belt; The channel is arranged inside the first rotating shaft.

3. The stirring and filtering device for preparing silicic acid according to claim 2, characterized in that: A cavity is provided inside the first stirring blade, and the cavity is communicated with the channel. A plurality of water holes are provided on both the front and rear side walls of the first stirring blade, and the water holes are communicated with the cavity. A mesh plate is fixed inside the water holes.

4. The stirring and filtering device for preparing silicic acid according to claim 2, characterized in that: A sealing member is provided between the water inlet pipe and the upper portion of the first rotating shaft.

5. The stirring and filtering device for preparing silicic acid according to claim 2, characterized in that: There are two spray assemblies in total, and they are symmetrically arranged along the center line of the first rotating shaft; The spray assembly includes a water pipe and an atomizing nozzle; The water guide pipe is fixed to the side wall of the first rotating shaft and is communicated with the channel. The bottom of the water guide pipe is fixedly communicated with an atomizing nozzle.

6. The stirring and filtering device for preparing silicic acid according to claim 1, characterized in that: The reaction assembly includes a reaction box, a second motor, a second rotating shaft, and a second stirring blade; The reaction box is fixed to the top of the frame, a second motor is fixed to the top of the reaction box, a second rotating shaft is fixed to the bottom end of the second motor, the lower part of the second rotating shaft passes through the top wall of the reaction box and extends to the lower part of the reaction box where a plurality of second stirring blades are fixed, and a seal is arranged between the second rotating shaft and the reaction box.

7. The stirring and filtering device for preparing silicic acid according to claim 6, characterized in that: It also includes a vacuum pump, an air pipe, and an absorption cell; An absorption tank is fixed on the top of the frame, an air pipe is fixedly connected to the top of the reaction box, a vacuum pump is arranged on the air pipe, water is contained in the absorption tank, and the bottom end of the air pipe extends into the water in the absorption tank.

8. The stirring and filtering device for preparing silicic acid according to claim 1, characterized in that: A mesh door is hinged at the bottom of the filter frame; A box door is hinged on the front side of the filter box.

9. The stirring and filtering device for preparing silicic acid according to claim 6, characterized in that: The left side of the top of the reaction box is fixedly connected with a feed pipe, and the feed pipe is provided with a second valve; A drainage pipe is fixedly connected to the lower part of the left side wall of the filter box, and the drainage pipe is provided with a third valve.

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