Pressure stirring tank for preparing calcium hydrophosphate

Abstract

The utility model relates to the field of calcium hydrophosphate production equipment, in particular to a pressure stirring tank for preparing calcium hydrophosphate, which comprises a stirring tank and an inner container, the outer side of the stirring tank is fixedly connected with a support frame used for supporting the whole stirring tank, the inner side of the stirring tank is provided with a stirring device used for stirring and grinding, and the inner container is provided with an inner container. The stirring device is internally provided with a crushing column used for crushing caked calcium hydroxide, a stirring rod used for stirring and mixing, and a separation plate used for separating caked calcium hydroxide from granular calcium hydroxide. Caked calcium hydroxide and granular calcium hydroxide are separated through the separating plate, and meanwhile the caked calcium hydroxide is pulverized and mixed with phosphoric acid through the stirring rod and the pulverizing column.

Description

Technical Field

[0001] The utility model relates to the field of calcium hydrogen phosphate production equipment, and specifically to a pressure stirring tank for preparing calcium hydrogen phosphate. Background Technique

[0002] Calcium hydrogen phosphate is a widely used inorganic compound with various uses. It is mainly used in the production of phosphate fertilizers in agriculture. The manufacturing process of calcium hydrogen phosphate is a complex and important process, involving multiple steps and the control of process parameters, which is an important link that cannot be ignored in the preparation of calcium hydrogen phosphate;

[0003] During the manufacturing process of calcium hydrogen phosphate, a certain amount of phosphoric acid and calcium hydroxide are required as raw materials. After screening the raw materials, the qualified raw materials are sent into the reaction kettle and mixed according to a certain ratio and formula. During the stirring process in the reaction kettle, if the wet calcium hydroxide agglomerates, it may cause blockage at the inner mouth of the reaction kettle, and even if the temperature is controlled to increase the temperature in the stirring tank, the time for the calcium hydroxide agglomerates to break up is relatively long, which will affect the production efficiency;

[0004] In view of this, we propose a pressure stirring tank for preparing calcium hydrogen phosphate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pressure stirring tank for preparing calcium hydrogen phosphate to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, on the one hand, the utility model provides a pressure stirring tank for preparing calcium hydrogen phosphate, which includes a stirring tank and an inner tank. The outer side of the stirring tank is fixedly connected with a support frame for supporting the entire stirring tank. The inner side of the stirring tank is provided with a stirring device for stirring and crushing. The stirring device is provided with a crushing column for crushing the agglomerated calcium hydroxide, a stirring rod for stirring and mixing, and a separation plate for separating the agglomerated calcium hydroxide and granular calcium hydroxide, where:

[0007] By the rotation of the stirring device, the separation plate is used to separate the agglomerated and granular calcium hydroxide, and at the same time, the stirring rod and the crushing column are used to complete the crushing of the agglomerated calcium hydroxide and mixing with phosphoric acid.

[0008] Preferably, an inlet is opened at the bottom of the stirring tank, a liquid inlet is opened on the outer wall of the stirring tank, the bottom of the stirring tank is in an inverted conical shape, and an outlet is opened at the bottom of the stirring tank.

[0009] Preferably, for the present utility model, the inner wall of the stirring tank is fixedly connected with an inner tank through multiple columns. A plurality of first circular holes are formed on the outer wall of the inner tank. The bottom of the inner tank is fixedly connected with a stirring chamber, and an annular hole is formed at the bottom of the stirring chamber.

[0010] Preferably, for the present utility model, an inclined partition is fixedly connected between the stirring tank and the inner tank. The plurality of first circular holes are located above the inclined partition, and a stirring device is arranged inside the inner tank.

[0011] Preferably, for the present utility model, the stirring device includes a motor. The motor is fixedly connected to the top of the stirring tank. The output end of the motor is fixedly connected with a rotating rod. A rotating chamber is arranged in the middle of the rotating rod. The rotating chamber is fixedly connected to the inside of the inner tank. Oppositely distributed separation plates are fixedly connected to the middle of the rotating rod. The separation plates are arranged at the upper end inside the rotating chamber. Crushing columns are fixedly connected to the outer wall of the rotating rod below the separation plates. The crushing columns are arranged at the lower end inside the rotating chamber.

[0012] Preferably, for the present utility model, the rotating chamber is in an overall hollow state. Second circular holes are formed at both the top and the bottom of the rotating chamber, and a plurality of square holes are formed on the outer wall of the rotating chamber.

[0013] Preferably, for the present utility model, the end of the rotating rod far from the motor is fixedly connected to the center of the stirring chamber. One ends of a plurality of stirring rods are fixedly connected to the outer wall of the end of the rotating rod far from the motor, and the outer walls of the other ends of the plurality of stirring rods are in contact with the inner wall of the stirring chamber.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the pressure stirring tank for preparing calcium hydrogen phosphate, the motor drives the rotating rod to rotate. Calcium hydroxide falls into the rotating chamber from the feeding port. The caked calcium hydroxide is separated and crushed by the crushing columns and the separation plates, and flows out of the square holes of the rotating chamber into the stirring chamber. The stirring rods stir and mix the phosphoric acid and calcium hydroxide flowing in from the liquid inlet to generate calcium hydrogen phosphate, and finally flow into the discharge port at the bottom of the stirring tank. This can prevent the insufficient mixing of caked calcium hydroxide and phosphoric acid and also prevent the accumulation and blockage inside the inner tank. Description of the Drawings

[0016] Figure 1 It is an overall three-dimensional schematic diagram of the pressure stirring tank for preparing calcium hydrogen phosphate of the present utility model;

[0017] Figure 2 It is an overall sectional schematic diagram of the pressure stirring tank for preparing calcium hydrogen phosphate of the present utility model;

[0018] Figure 3This is a schematic diagram of the internal details of the inner liner of the pressure stirring tank for the preparation of calcium hydrogen phosphate of the present utility model;

[0019] The meanings of each label in the figure are as follows:

[0020] 1. Stirring tank; 11. Feed inlet; 12. Liquid inlet; 13. Discharge outlet; 14. Inner liner; 141. First circular hole; 142. Stirring chamber; 1421. Annular hole; 15. Oblique partition; 2. Support frame; 3. Stirring device; 31. Motor; 32. Rotating rod; 321. Separation plate; 322. Crushing column; 33. Rotating chamber; 331. Second circular hole; 332. Square hole; 34. Stirring rod. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0023] Please refer to Figures 1-3 As shown, this embodiment provides a pressure stirring tank for the preparation of calcium hydrogen phosphate, including a stirring tank 1 and an inner liner 14. A support frame 2 for supporting the entire stirring tank 1 is fixedly connected to the outside of the stirring tank 1. A stirring device 3 for stirring and crushing is arranged inside the stirring tank 1. A crushing column 322 for crushing agglomerated calcium hydroxide is arranged inside the stirring device 3. A stirring rod 34 for stirring and mixing is arranged inside the stirring device 3. A separation plate 321 for separating agglomerated calcium hydroxide and granular calcium hydroxide is arranged inside the stirring device 3. Among them: by the rotation of the stirring device 3, the agglomerated and granular calcium hydroxide are separated by the separation plate 321, and at the same time, the crushing of the agglomerated calcium hydroxide and the mixing with phosphoric acid are completed by the stirring rod 34 and the crushing column 322.

[0024] The bottom of the stirring tank 1 is provided with a feeding port 11, the outer wall of the stirring tank 1 is provided with a liquid inlet 12, the bottom of the stirring tank 1 is in an inverted conical shape, the bottom of the stirring tank 1 is provided with a discharge port 13, the inner wall of the stirring tank 1 is fixedly connected with an inner tank 14 through a plurality of columns, the outer wall of the inner tank 14 is provided with a plurality of first circular holes 141, the bottom of the inner tank 14 is fixedly connected with a stirring chamber 142, and the bottom of the stirring chamber 142 is provided with an annular hole 1421.

[0025] An inclined partition 15 is fixedly connected between the stirring tank 1 and the inner tank 14, and a plurality of first circular holes 141 are located above the inclined partition 15. A stirring device 3 is arranged inside the inner tank 14. The inclined partition 15 is used for phosphoric acid to enter from the liquid inlet 12 to the inclined partition 15 and flow into the stirring chamber 142 from the first circular holes 141. The stirring device 3 includes a motor 31, the motor 31 is fixedly connected to the top of the stirring tank 1, the output end of the motor 31 is fixedly connected with a rotating rod 32, a rotating chamber 33 is arranged in the middle of the rotating rod 32, the rotating chamber 33 is fixedly connected to the inside of the inner tank 14, the middle of the rotating rod 32 is fixedly connected with oppositely distributed separating plates 321, the separating plates 321 are arranged at the upper end inside the rotating chamber 33, the outer wall of the rotating rod 32 is fixedly connected with crushing columns 322 located below the separating plates 321, the crushing columns 322 are arranged at the lower end inside the rotating chamber 33, the rotating rod 32 drives the separating plates 321 and the crushing columns 322 to rotate, so that the caked calcium hydroxide slides into the rotating chamber 33 and is caught by the crushing columns 322 at the second circular holes 331 at the bottom of the rotating chamber 33, and the diameter of the second circular holes 331 at the top of the rotating chamber 33 is larger than that of the second circular holes 331 at the bottom. Then, through the rotation of the crushing columns 322, the calcium hydroxide at the second circular holes 331 at the bottom is broken into particles and falls into the stirring chamber 142.

[0026] The rotating chamber 33 is in an overall hollow state, the top and bottom of the rotating chamber 33 are both provided with second circular holes 331, the outer wall of the rotating chamber 33 is provided with a plurality of square holes 332, the diameter of the second circular holes 331 at the top of the rotating chamber 33 is larger than that of the second circular holes 331 at the bottom of the rotating chamber 33, and the distribution density of the second circular holes 331 at the top is smaller than that of the second circular holes 331 at the bottom.

[0027] One end of the rotating rod 32 is fixedly connected to the center of the stirring chamber 142 at the end far from the motor 31. One end of a plurality of stirring rods 34 is fixedly connected to the outer wall of the rotating rod 32 at the end far from the motor 31. The outer walls of the other ends of the plurality of stirring rods 34 are in contact with the inner wall of the stirring chamber 142, and the stirring rods 34 are located at the top of the inner wall of the bottom of the stirring chamber 142. Therefore, during the stirring process of the stirring rods 34, the calcium hydrogen phosphate that has been mixed inside will also be scraped to prevent it from accumulating at the bottom of the stirring chamber 142 for a long time and pushed into the annular hole 1421.

[0028] Specific working principle

[0029] As Figures 1-2 shown, when calcium hydroxide is fed from the feed inlet 11 into the inner tank 14 inside the stirring tank 1, some internally caked calcium hydroxide falls to the top of the rotating chamber 33, and at the same time, it falls into the rotating chamber 33 through the second circular hole 331 at the top of the rotating chamber 33. Driven by the motor 31, the rotating rod 32 and the separation plate 321 rotate. When the calcium hydroxide is at the upper end inside the rotating chamber 33, it will be separated by the rotation of the separation plate 321 for the first time. Some smaller caked lumps will be broken by the impact generated by the rotation of the rotating separation plate 321 and flow out from the square hole 332, while the larger caked calcium hydroxide will not be completely separated by the impact and will be broken into small pieces and fall to the position of the grinding column 322, and finally get stuck in the second circular hole 331 at the bottom of the rotating chamber 33. And under the rotation of the grinding column 322, it rotates and impacts and grinds inside the rotating chamber 33. Finally, under the action of the rotation of the grinding column 322 and the centrifugal force, a part of it falls into the stirring chamber 142 through the second circular hole 331 at the bottom, and a part is pushed to the square hole 332 on the outside and falls into the stirring chamber 142 for stirring;

[0030] The phosphoric acid injected from the liquid inlet 12 will flow downward between the inner tank 14 and the stirring tank 1 until it is blocked by the inclined partition 15 and flows into the stirring chamber 142 through the first circular hole 141 for stirring. Driven by the motor 31, the rotating rod 32 and the stirring rod 34 rotate and stir and mix to generate calcium hydrogen phosphate and water. At this time, the calcium hydrogen phosphate is in a wet state. Then, under the action of the rotation of the stirring rod 34 and the centrifugal force, the calcium hydroxide is pushed from the central position to the outer annular hole 1421, and finally falls to the bottom of the stirring tank 1 and is discharged from the discharge port 13.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Pressure stirring tank for preparing calcium hydrogen phosphate, comprising a stirring tank (1) and an inner tank (14), characterized in that: A support frame (2) for supporting the entire mixing tank (1) is fixedly connected to the outside of the mixing tank (1). A mixing device (3) for mixing and crushing is arranged inside the mixing tank (1). A crushing column (322) for crushing lumps of calcium hydroxide is arranged inside the mixing device (3). Stirring rods (34) for stirring and mixing are arranged inside the mixing device (3). A separation plate (321) for separating lumpy calcium hydroxide and granular calcium hydroxide is arranged inside the mixing device (3). Among them: By the rotation of the mixing device (3), the lumpy and granular calcium hydroxide are separated by the separation plate (321). At the same time, the crushing of lumpy calcium hydroxide and mixing with phosphoric acid are completed by the stirring rods (34) and the crushing column (322).

2. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 1, characterized in that: A feed inlet (11) is opened at the bottom of the mixing tank (1). A liquid inlet (12) is opened on the outer wall of the mixing tank (1). The bottom of the mixing tank (1) is in an inverted conical shape. A discharge outlet (13) is opened at the bottom of the mixing tank (1).

3. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 2, wherein: An inner tank (14) is fixedly connected to the inner wall of the mixing tank (1) through multiple columns. A plurality of first circular holes (141) are opened on the outer wall of the inner tank (14). A mixing chamber (142) is fixedly connected to the bottom of the inner tank (14). An annular hole (1421) is opened at the bottom of the mixing chamber (142).

4. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 3, wherein: An inclined partition (15) is fixedly connected between the mixing tank (1) and the inner tank (14). The plurality of first circular holes (141) are located above the inclined partition (15). A mixing device (3) is arranged inside the inner tank (14).

5. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 4, characterized in that: The mixing device (3) includes a motor (31). The motor (31) is fixedly connected to the top of the mixing tank (1). The output end of the motor (31) is fixedly connected to a rotating rod (32). A rotating chamber (33) is arranged in the middle of the rotating rod (32). The rotating chamber (33) is fixedly connected to the inside of the inner tank (14). Oppositely distributed separation plates (321) are fixedly connected to the middle of the rotating rod (32). The separation plates (321) are arranged at the upper end inside the rotating chamber (33). Crushing columns (322) are fixedly connected to the outer wall of the rotating rod (32) below the separation plates (321). The crushing columns (322) are arranged at the lower end inside the rotating chamber (33).

6. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 5, wherein: The rotating chamber (33) is in an overall hollow state. Second circular holes (331) are opened at both the top and bottom of the rotating chamber (33). A plurality of square holes (332) are opened on the outer wall of the rotating chamber (33).

7. The pressure stirring tank for preparing calcium hydrogen phosphate according to claim 5, characterized in that: One end of the rotating rod (32) far from the motor (31) is fixedly connected to the center of the mixing chamber (142). One ends of a plurality of stirring rods (34) are fixedly connected to the outer wall of the rotating rod (32) at the end far from the motor (31). The outer walls of the other ends of the plurality of stirring rods (34) are in contact with the inner wall of the mixing chamber (142).

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