Dispersing device for extracting sulfuric acid from phosphoric acid hemihydrate

Abstract

The utility model relates to the field of phosphoric acid extraction equipment, and discloses a sulfuric acid dispersing device for extracting semi-hydrated phosphoric acid, which comprises a reaction tank, a top plate is arranged on the upper end face of the reaction tank, a support is arranged at the center of the upper end face of the top plate, and a motor is fixedly connected to the center of the upper end face of the support. The output end of the motor sequentially penetrates through the support and the upper end face of the top plate and extends into the reaction tank, a stirring rod is fixedly connected to the end, a dispersing structure is arranged on the upper portion of the outer side wall of the stirring rod, and stirring blades are vertically arranged on the lower portions of the centers of the two side walls of the stirring rod. According to the device, the connecting sleeve is limited through the two fixing structures, the height of the connecting sleeve is conveniently adjusted, then the input end of the three-way pipe is clamped through the limiting structure, the height of the connecting sleeve is conveniently adjusted in a matched mode, sulfuric acid is injected through the three-way pipe, and the sulfuric acid drops into the dispersing disc; sulfuric acid is uniformly sprayed into the reaction tank through centrifugal force when the stirring rod rotates, so that the mixing effect is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of phosphoric acid extraction equipment, in particular to a sulfuric acid dispersion device for extracting semi-aqueous phosphoric acid. Background Art

[0002] Hemihydrated phosphoric acid is a chemical substance. It is a hydrate of phosphoric acid, also known as phosphorous acid. Hemihydrated phosphoric acid is a colorless, odorless solid that is crystalline at room temperature. It can be dissolved in water and is a weak acid. During the extraction process of hemihydrated phosphoric acid, sulfuric acid needs to be added through a pipeline.

[0003] At present, in the process of semi-aqueous phosphoric acid extraction, sulfuric acid is sent to the addition point through the main pipeline and added to the reaction tank at multiple points through branch pipes, resulting in uneven distribution. Therefore, those skilled in the art provide a sulfuric acid dispersion device for semi-aqueous phosphoric acid extraction to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a semi-aqueous phosphoric acid extraction sulfuric acid dispersion device. After sulfuric acid is added through the input end of the three-way pipe, the sulfuric acid flows into the interior of the dispersion disk along the two output ends, and rotates synchronously with the rotation of the stirring rod without additional power. The centrifugal force generated by the rotation is used to evenly sprinkle the sulfuric acid into the reaction tank, and the mixing is complete, so that the reaction effect is significantly improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-aqueous phosphoric acid extraction sulfuric acid dispersion device, comprising a reaction tank, the upper end surface of the reaction tank is provided with a top plate, the center of the upper end surface of the top plate is provided with a bracket, the center of the upper end surface of the bracket is fixedly connected with a motor, the output end of the motor sequentially passes through the bracket and the upper end surface of the top plate to the inside of the reaction tank, and the end is fixedly connected with a stirring rod, the upper part of the outer wall of the stirring rod is provided with a dispersion structure, the lower part of the center of both side walls of the stirring rod is provided with stirring blades arranged up and down, a three-way pipe is provided at the upper part of one side of the reaction tank, the input end of the three-way pipe passes through the lower end surface of the top plate to the upper end of the top plate, the upper end surface of the top plate at the front end of the three-way pipe is provided with a slide groove, and the inside of the slide groove is provided with a limiting structure;

[0006] The dispersion structure includes a connecting sleeve and a dispersion disk, wherein the connecting sleeve is arranged on the outer wall of the stirring rod, a cavity is arranged at the upper center of the inner wall of the connecting sleeve, the dispersion disk is arranged at the lower part of the outer wall of the connecting sleeve, and a fixing structure is arranged at the upper part of both side walls of the connecting sleeve, and the two output ends of the three-way pipe are located at the inner sides of the dispersion disk;

[0007] Through the above technical solution, when in use, the connecting sleeve is limited by two fixed structures, which is also convenient for adjusting the height of the connecting sleeve, and then the input end of the three-way pipe is clamped by the limiting structure, which is convenient for adjusting the height of the connecting sleeve, and finally sulfuric acid is injected through the three-way pipe, and the sulfuric acid drips into the inside of the dispersion disk. As the stirring rod rotates, the sulfuric acid is evenly sprinkled into the reaction tank by centrifugal force, the mixing is complete, and the reaction effect is significantly improved.

[0008] Furthermore, the limiting structure includes a limiting block, a groove and a spring, wherein the spring is arranged at the center of the front inner wall of the slide slot, the limiting block is arranged at the rear end of the spring, and the groove is arranged at the front center of the upper end surface of the limiting block;

[0009] Through the above technical solution, the limit block is pushed toward the front end through the groove, and then the limit block is released and pushed backward by the tension of the spring to clamp the input end of the three-way pipe.

[0010] Furthermore, the rear end surface of the limit block is provided with a semicircular arc;

[0011] Through the above technical solution, it is convenient to fit on the surface of the input end of the three-way pipe.

[0012] Further, the fixing structure includes a pressure block, a bearing and a bolt, the pressure block is arranged inside the cavity, the bearing is arranged at the center of one side wall of the pressure block, the bolt is arranged on a side wall of a connecting sleeve located on one side of the cavity, one end of the bolt passes through a side wall of the connecting sleeve to the inside of the cavity, and the end is fixedly connected to the inner ring of the bearing, and a circular arc is opened at the center of one side wall of the pressure block;

[0013] Through the above technical solution, by rotating the bolt in the forward direction, the bolt pushes the pressing block to move inward, so that the arc fits on the side wall of the stirring rod to limit and fix the connecting sleeve.

[0014] Furthermore, the outer ring of the bearing is fixedly connected to the pressing block;

[0015] The above technical solution can prevent the pressing block from rotating when the bolt rotates.

[0016] Furthermore, the connecting sleeve and the outer side wall of the dispersion disk are both provided with a polyfluoride anti-corrosion layer;

[0017] The above technical solution can prevent the connecting sleeve and the dispersion disk from corroding and agglomerating.

[0018] Furthermore, a reinforcement ring is provided on the upper side of the outer side wall of the input end of the tee pipe;

[0019] Through the above technical solution, the strength of the input end of the three-way pipe can be easily improved to prevent the limiting structure from exerting excessive pressure on the three-way pipe, thereby preventing the three-way pipe from being damaged.

[0020] Furthermore, leakage holes are symmetrically arranged on both sides of the lower end surface of the dispersion disk;

[0021] The above technical solution can prevent liquid accumulation inside the dispersion disk.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, after sulfuric acid is added to the sulfuric acid dispersion device through the input end of the three-way pipe, the sulfuric acid flows into the dispersion disk along the two output ends, and rotates synchronously with the rotation of the stirring rod without additional power. The centrifugal force generated by the rotation is used to evenly sprinkle the sulfuric acid into the reaction tank, mix it completely, and significantly improve the reaction effect.

[0024] 2. In the utility model, by rotating the two bolts in the opposite direction, the two bolts drive the two pressure blocks to move to both sides, slide the connecting sleeve up and down, and then rotate the two bolts forward, so that the arc surfaces of the two pressure blocks are close to the stirring rod for support, thereby increasing the friction between the stirring rod and the dispersion structure, fixing the dispersion structure, and facilitating the adjustment of the position of the dispersion structure.

[0025] 3. In the utility model, while adjusting the position of the dispersed structure, the limit block is pushed toward the front end through the groove to move the input end of the three-way pipe upward, and then the limit block is released and pushed toward the rear end through the tension of the spring to limit the input end of the three-way pipe, which is convenient for adjusting the height in coordination with the dispersed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of a sulfuric acid dispersion device for extracting semi-aqueous phosphoric acid proposed by the utility model;

[0027] Figure 2 It is a front cross-sectional view of a semi-aqueous phosphoric acid extraction sulfuric acid dispersion device proposed by the utility model;

[0028] Figure 3 It is a side sectional view of a limiting structure of a semi-aqueous phosphoric acid extraction sulfuric acid dispersion device proposed by the utility model;

[0029] Figure 4 for Figure 2 A magnified schematic diagram of center A.

[0030] Legend:

[0031] 1. Reaction tank; 2. Limiting structure; 201. Slide; 202. Limiting block; 203. Groove; 204. Spring; 205. Reinforcement ring; 3. Tee; 4. Bracket; 5. Motor; 6. Top plate; 7. Stirring blade; 8. Stirring rod; 9. Dispersing structure; 901. Connecting sleeve; 902. Dispersing disk; 10. Fixing structure; 1001. Cavity; 1002. Press block; 1003. Bearing; 1004. Bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-4 , the utility model provides an embodiment: a semi-aqueous phosphoric acid extraction sulfuric acid dispersion device, including a reaction tank 1, the upper end surface of the reaction tank 1 is provided with a top plate 6, the center of the upper end surface of the top plate 6 is provided with a bracket 4, the center of the upper end surface of the bracket 4 is fixedly connected with a motor 5, the output end of the motor 5 sequentially passes through the bracket 4 and the upper end surface of the top plate 6 to the inside of the reaction tank 1, and the end is fixedly connected with a stirring rod 8, a dispersion structure 9 is provided at the upper part of the outer wall of the stirring rod 8, and stirring blades 7 are arranged up and down at the lower center of the two side walls of the stirring rod 8, a three-way pipe 3 is provided at the upper part of one side of the reaction tank 1, the input end of the three-way pipe 3 passes through the lower end surface of the top plate 6 to the upper end of the top plate 6, a slide groove 201 is provided on the upper end surface of the top plate 6 at the front end of the three-way pipe 3, and a limiting structure 2 is provided inside the slide groove 201, and then the input end of the three-way pipe 3 is clamped by the limiting structure 2, so as to facilitate the adjustment of the height of the connecting sleeve 901.

[0034] The dispersion structure 9 includes a connecting sleeve 901 and a dispersion disk 902. The connecting sleeve 901 is sleeved on the outer wall of the stirring rod 8. A cavity 1001 is provided at the upper center of the inner wall of the connecting sleeve 901. The dispersion disk 902 is arranged at the lower part of the outer wall of the connecting sleeve 901. The upper part of the two side walls of the connecting sleeve 901 is provided with a fixed structure 10. When in use, the connecting sleeve 901 is limited by the two fixed structures 10, and it is also convenient to adjust the height of the connecting sleeve 901. The two output ends of the three-way pipe 3 are located on both sides of the dispersion disk 902. Finally, sulfuric acid is injected through the three-way pipe 3, and the sulfuric acid drips into the dispersion disk 902. As the stirring rod 8 rotates, the sulfuric acid is evenly sprinkled into the reaction tank 1 through centrifugal force, and the mixing is complete, and the reaction effect is significantly improved.

[0035] The limiting structure 2 includes a limiting block 202, a groove 203 and a spring 204. The spring 204 is arranged at the center of the front inner wall of the slide groove 201, the limiting block 202 is arranged at the rear end of the spring 204, and the groove 203 is arranged at the front center of the upper end surface of the limiting block 202. The limiting block 202 is pushed to the front end through the groove 203, and then the limiting block 202 is released and pushed backward by the tension of the spring 204 to clamp the input end of the tee pipe 3. The rear end surface of the limiting block 202 is provided with a semicircular arc, which is convenient for fitting on the surface of the input end of the tee pipe 3.

[0036] The fixing structure 10 includes a pressure block 1002, a bearing 1003 and a bolt 1004. The pressure block 1002 is arranged inside the cavity 1001, the bearing 1003 is arranged at the center of one side wall of the pressure block 1002, and the bolt 1004 is arranged on a side wall of the connecting sleeve 901 on one side of the cavity 1001. One end of the bolt 1004 passes through a side wall of the connecting sleeve 901 to the inside of the cavity 1001, and the end is fixedly connected to the inner ring of the bearing 1003. An arc is opened at the center of one side wall of the pressure block 1002. By rotating the bolt 1004 forward, the bolt 1004 pushes the pressure block 1002 to move inward, so that the arc fits on the side wall of the stirring rod 8 to limit and fix the connecting sleeve 901. The outer ring of the bearing 1003 is fixedly connected to the pressure block 1002 to prevent the pressure block 1002 from rotating when the bolt 1004 rotates.

[0037] The outer walls of the connecting sleeve 901 and the dispersion disk 902 are both provided with a polytetrafluoroethylene anti-corrosion layer to prevent the connecting sleeve 901 and the dispersion disk 902 from corroding and agglomerating. A reinforcement ring 205 is provided near the upper part of the outer wall of the input end of the tee pipe 3 to improve the strength of the input end of the tee pipe 3 and prevent the limiting structure 2 from exerting excessive pressure on the tee pipe 3, which may cause damage to the tee pipe 3. Leakage holes are symmetrically provided on both sides of the lower end surface of the dispersion disk 902 to prevent liquid from accumulating inside the dispersion disk 902.

[0038] Working principle: During the extraction of hemi-aqueous phosphoric acid, after sulfuric acid is added through the input end of the three-way pipe 3, the sulfuric acid flows into the dispersion disk 902 along the two output ends, and rotates synchronously with the stirring rod 8. Without additional power, the centrifugal force generated by the rotation is used to evenly sprinkle the sulfuric acid into the reaction tank 1, and the mixture is completely mixed. The reaction effect is significantly improved. By rotating the two bolts 1004 in the opposite direction, the two bolts 1004 drive the two pressing blocks 1002 to move to both sides, slide the connecting sleeve 901 up and down, and then rotate the two bolts 1004 forward. 04, so that the arc surfaces of the two pressing blocks 1002 are close to the stirring rod 8 for support, the friction between the stirring rod 8 is increased, the dispersion structure 9 is fixed, and the position of the dispersion structure 9 is conveniently adjusted. While adjusting the position of the dispersion structure 9, the limit block 202 is pushed to the front end through the groove 203 to move the input end of the three-way pipe 3 upward, and then the limit block 202 is released, and the limit block 202 is pushed to the rear end through the tension of the spring 204 to limit the input end of the three-way pipe 3, which is convenient for coordinating with the dispersion structure 9 to adjust the height.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid, comprising a reaction tank (1), characterized in that: The upper end surface of the reaction tank (1) is provided with a top plate (6), the center of the upper end surface of the top plate (6) is provided with a bracket (4), the center of the upper end surface of the bracket (4) is fixedly connected with a motor (5), the output end of the motor (5) passes through the bracket (4) and the upper end surface of the top plate (6) in sequence to the inside of the reaction tank (1), and the end is fixedly connected with a stirring rod (8), the upper part of the outer wall of the stirring rod (8) is provided with a dispersion structure (9), the lower part of the center of both side walls of the stirring rod (8) are arranged with stirring blades (7) in an upper position, a three-way pipe (3) is provided at one side of the reaction tank (1), the input end of the three-way pipe (3) passes through the lower end surface of the top plate (6) to the upper end of the top plate (6), the upper end surface of the top plate (6) at the front end of the three-way pipe (3) is provided with a slide groove (201), and the inside of the slide groove (201) is provided with a limiting structure (2); The dispersion structure (9) comprises a connecting sleeve (901) and a dispersion disk (902); the connecting sleeve (901) is sleeved on the outer wall of the stirring rod (8); a cavity (1001) is provided at the upper center of the inner wall of the connecting sleeve (901); the dispersion disk (902) is arranged at the lower part of the outer wall of the connecting sleeve (901); fixing structures (10) are provided at the upper part of both side walls of the connecting sleeve (901); and two output ends of the three-way pipe (3) are located at the inner sides of the dispersion disk (902).

2. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 1, characterized in that: The limiting structure (2) comprises a limiting block (202), a groove (203) and a spring (204); the spring (204) is arranged at the center of the front inner wall of the slide groove (201); the limiting block (202) is arranged at the rear end of the spring (204); and the groove (203) is arranged at the front center of the upper end surface of the limiting block (202).

3. The device for dispersing sulfuric acid by extracting semi-aqueous phosphoric acid according to claim 2, characterized in that: The rear end surface of the limiting block (202) is provided with a semicircular arc.

4. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 1, characterized in that: The fixing structure (10) comprises a pressure block (1002), a bearing (1003) and a bolt (1004); the pressure block (1002) is arranged inside the cavity (1001); the bearing (1003) is arranged at the center of a side wall of the pressure block (1002); the bolt (1004) is arranged on a side wall of a connecting sleeve (901) located on one side of the cavity (1001); one end of the bolt (1004) passes through a side wall of the connecting sleeve (901) and reaches the inside of the cavity (1001); and the end is fixedly connected to the inner ring of the bearing (1003); and a circular arc is provided at the center of one side wall of the pressure block (1002).

5. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 4, characterized in that: The outer ring of the bearing (1003) is fixedly connected to the pressing block (1002).

6. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 1, characterized in that: The outer side walls of the connecting sleeve (901) and the dispersion disk (902) are both provided with a polyfluoride anti-corrosion layer.

7. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 1, characterized in that: A reinforcement ring (205) is provided on the upper portion of the outer side wall of the input end of the three-way pipe (3).

8. The device for dispersing sulfuric acid by extracting hemi-aqueous phosphoric acid according to claim 1, characterized in that: The lower end surface of the dispersion disk (902) is symmetrically provided with leakage holes on both sides.

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