A stirring and mixing device in ammonium perchlorate production

Abstract

The utility model discloses a kind of stirring and mixing equipment in ammonium perchlorate production, including stirring kettle, the top end of the stirring kettle is equipped with stirring motor, the junction of stirring motor and stirring kettle is provided with mechanical seal, the top end of the mechanical seal is provided with hollow ring, one side wall of the hollow ring is penetrated by cooling liquid inlet pipe, the other side wall of the hollow ring is penetrated by cooling liquid outlet pipe, the output of the stirring motor is provided with stirring shaft, the top of the stirring shaft is provided with multiple dispersion disc, the bottom of the stirring shaft is provided with round plate, multiple through-holes are formed in the top of the round plate. The utility model is provided with a series of structures, so that the ammonium perchlorate crystal powder on the bottom is mixed uniformly with solvent, the mixing effect of the stirring equipment is improved, the probability of temperature abnormally rising at mechanical seal and stirring structure is reduced, so that the adverse effects of ammonium perchlorate in the equipment under abnormally high temperature are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a stirring and mixing device for the production of ammonium perchlorate. Background Technology

[0002] Ammonium perchlorate is an important inorganic compound with strong oxidizing and explosive properties. In the production process of ammonium perchlorate, since the raw material is a crystalline powder, it needs to be dissolved in a mixed solvent when preparing the solution to ensure the smooth progress of subsequent production. Stirring and mixing equipment is used during the preparation and mixing of ammonium perchlorate to form a uniform saturated solution.

[0003] However, in existing ammonium perchlorate production equipment, the ammonium perchlorate crystals are added in powder form and require the full action of surfactants to dissolve in the mixed solvent. When the ammonium perchlorate crystal powder is not completely dissolved, it easily forms a precipitate at the bottom of the equipment. Since the stirring structure is located in the upper part of the equipment, the precipitated ammonium perchlorate crystals at the bottom cannot be further stirred, thus affecting the mixing effect. In addition, when the stirring motor drives the stirring shaft to rotate at high speed, it easily generates heat through friction with the mechanical seal at the top of the equipment, causing the temperature at the top of the equipment to rise abnormally. This makes the ammonium perchlorate crystal powder inside the equipment susceptible to adverse effects from abnormally high temperatures. Utility Model Content

[0004] The purpose of this invention is to provide a mixing and blending device for the production of ammonium perchlorate, so as to solve the problems mentioned in the background art, such as poor mixing effect of ammonium perchlorate in the device and susceptibility to the adverse effects of abnormal high temperature at the mixing structure of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mixing and blending device for ammonium perchlorate production, comprising a mixing vessel, a stirring motor installed at the top of the mixing vessel, a mechanical seal provided at the junction of the stirring motor and the mixing vessel, a hollow ring provided at the top of the mechanical seal, a coolant inlet pipe penetrating one side wall of the hollow ring, a coolant outlet pipe penetrating the other side wall of the hollow ring, a stirring shaft provided at the output end of the stirring motor, multiple dispersing discs provided at the top of the stirring shaft, a circular plate provided at the bottom of the stirring shaft, and multiple through holes opened at the top of the circular plate;

[0006] A liquid inlet pipe passes through the top of one side wall of the mixing vessel, and a feed pipe passes through the top of the liquid inlet pipe. A circulation pipe passes through the top of the other side wall of the mixing vessel. A vertical pipe passes through the middle of the bottom of the mixing vessel. A return pipe passes through the bottom of one side wall of the vertical pipe. A liquid outlet pipe passes through the other side wall of the vertical pipe. A base is fixedly connected to the bottom of the mixing vessel by a fixed support foot. A circulating water pump is installed on one side of the top of the base.

[0007] Preferably, the hollow ring is sleeved and connected to the stirring motor, and coolant flows inside the hollow ring.

[0008] Preferably, the interior of the feed pipe is in communication with the interior of the liquid inlet pipe, and the interior of the liquid inlet pipe is in communication with the interior of the stirring vessel.

[0009] Preferably, the bottom end of the circulation pipe is connected to the inlet of the circulation water pump, one end of the return pipe is connected to the outlet of the circulation water pump, and the other end of the return pipe passes through one side wall of the vertical pipe.

[0010] Preferably, the dispersion disc and the circular plate are rotatably connected to the mixing vessel via a stirring shaft.

[0011] Preferably, a filter screen is provided at the junction of the vertical pipe and the bottom of the mixing vessel, and the filter screen is located directly below the circular plate.

[0012] Preferably, a solenoid valve is provided at one end of the outlet pipe near the vertical pipe, and the interior of the outlet pipe is connected to the interior of the vertical pipe through the solenoid valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The mixing and homogenizing equipment in this ammonium perchlorate production process uses a circulation pipe, a circulating water pump, and a return pipe to allow the liquid inside the equipment to circulate and flush out from the bottom. This allows the undissolved ammonium perchlorate crystal powder that has settled at the bottom of the equipment to be pushed to the mixing structure inside the equipment by the water flow and re-stirred. In addition, the circular plate and through holes can disperse the water flow flushed out from the bottom of the equipment, thereby facilitating the uniform mixing of the settled ammonium perchlorate crystal powder with the solvent and improving the mixing effect of this mixing equipment.

[0015] 2. The mixing equipment in this ammonium perchlorate production process has a hollow ring, a coolant inlet pipe, and a coolant outlet pipe, which allows coolant to flow into the mixing structure. This cools the mechanical seals that rotate at high speed between the mixing shaft and the mixing motor, reducing the probability of abnormal temperature rises in the mechanical seals and mixing structure, thereby minimizing the adverse effects of abnormally high temperatures on the ammonium perchlorate inside the equipment. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the circulation pipe and return pipe structure of this utility model;

[0018] Fig. 3 This is a schematic diagram of the circular plate and through-hole structure of this utility model;

[0019] Fig. 4 This is a schematic diagram of the hollow ring, coolant inlet pipe, and coolant outlet pipe of this utility model.

[0020] In the diagram: 1. Stirring motor; 2. Hollow ring; 3. Coolant inlet pipe; 4. Coolant outlet pipe; 5. Stirring vessel; 6. Liquid inlet pipe; 7. Feed pipe; 8. Liquid outlet pipe; 9. Base; 10. Circulating water pump; 11. Return pipe; 12. Circulation pipe; 13. Mechanical seal; 14. Stirring shaft; 15. Dispersion disc; 16. Circular plate; 17. Through hole; 18. Filter screen; 19. Vertical pipe; 20. Solenoid valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figs. 1 to 4 As shown, the mixing equipment in the production of ammonium perchlorate in this embodiment includes a mixing vessel 5. A stirring motor 1 is installed at the top of the mixing vessel 5. A mechanical seal 13 is provided at the junction of the stirring motor 1 and the mixing vessel 5. A hollow ring 2 is provided at the top of the mechanical seal 13. The bottom surface of the hollow ring 2 is in contact with the top surface of the mechanical seal 13, so that the coolant flowing in the hollow ring 2 can continuously conduct low temperature to the mechanical seal 13 through the hollow ring 2. This allows the mechanical seal 13 and the stirring shaft 14 to be cooled, thereby reducing the probability of abnormal temperature rise of the mechanical seal 13 due to high-speed rotation friction. A coolant inlet pipe 3 penetrates one side wall of the hollow ring 2, and a coolant outlet pipe 4 penetrates the other side wall of the hollow ring 2. The coolant inlet pipe 3 and the coolant outlet pipe 4 can... This allows the coolant to flow within the hollow ring 2, thereby removing heat from the mechanical seal 13 and the stirring shaft 14. The output end of the stirring motor 1 is equipped with a stirring shaft 14, and the top of the stirring shaft 14 is equipped with multiple dispersion discs 15. The dispersion discs 15 are flat and serrated, which can fully stir and mix the ammonium perchlorate crystal powder evenly. The bottom end of the stirring shaft 14 is equipped with a circular plate 16, which is a circular flat plate that can intercept the water flow from the top of the vertical pipe 19, thereby dispersing the ammonium perchlorate crystal powder mixed in the water flow, which is conducive to the subsequent mixing and stirring of the ammonium perchlorate crystal powder. The top of the circular plate 16 is provided with multiple through holes 17, which allow the water flow to disperse and pass through, thereby facilitating the dispersing of undissolved ammonium perchlorate crystal powder mixed in the water flow.

[0025] A liquid inlet pipe 6 runs through the top of one side wall of the stirred tank 5. The function of the liquid inlet pipe 6 is to introduce solvent and surfactant. A feed pipe 7 runs through the top of the liquid inlet pipe 6. The function of the feed pipe 7 is to introduce ammonium perchlorate crystal powder, allowing the ammonium perchlorate crystal powder to pre-contact and mix with the solvent and surfactant before entering the equipment, thus facilitating subsequent mixing and stirring of the ammonium perchlorate. A circulation pipe 12 runs through the top of the other side wall of the stirred tank 5. The circulation pipe 12 transports the liquid in the stirred tank 5 to the circulating water pump 10 for circulation. A vertical pipe 19 runs through the middle of the bottom of the stirred tank 5. The function of the vertical pipe 19 is to guide the liquid flowing out of the stirred tank 5 through... The bottom of the equipment is returned to the equipment to push the ammonium perchlorate crystals that have settled at the bottom of the equipment. A return pipe 11 runs through the bottom of one side wall of the vertical pipe 19, and an outlet pipe 8 runs through the other side wall of the vertical pipe 19. The function of the outlet pipe 8 is to discharge the ammonium perchlorate solution after it has been mixed evenly. The bottom of the stirring tank 5 is fixedly connected to the base 9 by a fixed support foot. A circulating water pump 10 is installed on one side of the top of the base 9. The function of the circulating water pump 10 is to increase the speed at which the liquid rushes out from the bottom of the vertical pipe 19, so as to push the ammonium perchlorate that has settled at the bottom to the position of the dispersion plate 15 for stirring, thereby facilitating the re-stirring and mixing of the ammonium perchlorate.

[0026] Specifically, the hollow ring 2 is sleeved and connected to the stirring motor 1. Coolant flows inside the hollow ring 2. The function of the hollow ring 2 is to allow the coolant to flow orderly along the top of the mechanical seal 13, thereby cooling down the mechanical seal 13 and reducing the possibility of abnormal temperature rise.

[0027] Furthermore, the inside of the feed pipe 7 is connected to the inside of the liquid inlet pipe 6, and the inside of the liquid inlet pipe 6 is connected to the inside of the stirred tank 5. The feed pipe 7 is perpendicular to the top of the liquid inlet pipe 6, so that after the ammonium perchlorate crystal powder falls into the liquid inlet pipe 6, it can be flushed into the stirred tank 5 by the solvent pumped in the liquid inlet pipe 6, thereby facilitating the premixing of the ammonium perchlorate crystal powder.

[0028] Furthermore, the bottom end of the circulation pipe 12 is connected to the inlet of the circulation water pump 10, one end of the return pipe 11 is connected to the outlet of the circulation water pump 10, and the other end of the return pipe 11 passes through one side wall of the vertical pipe 19, so that the liquid flowing out of the stirred tank 5 can return to the stirred tank 5, thereby reducing the precipitation of undissolved ammonium perchlorate crystal powder at the bottom of the stirred tank 5.

[0029] Furthermore, the dispersion disc 15 and the circular plate 16 are rotatably connected to the stirring vessel 5 via the stirring shaft 14, so that the dispersion disc 15 can fully stir the solvent and ammonium perchlorate crystal powder in the stirring vessel 5, thereby facilitating the uniform mixing of the ammonium perchlorate crystal powder.

[0030] Furthermore, a filter screen 18 is provided at the junction of the vertical pipe 19 and the bottom of the mixing vessel 5. The filter screen 18 is located directly below the circular plate 16 and has a mesh size of 100. Its function is to intercept the ammonium perchlorate crystals that have settled at the bottom of the mixing vessel 5, so as to prevent large-volume ammonium perchlorate crystals from entering the vertical pipe 19 and clogging it.

[0031] Furthermore, a solenoid valve 20 is installed at one end of the outlet pipe 8 near the vertical pipe 19. It is a three-way valve structure. The interior of the outlet pipe 8 is connected to the interior of the vertical pipe 19 through the solenoid valve 20. When the equipment is running, the solenoid valve 20 is in the closed state, so that the liquid output from the return pipe 11 can be directly introduced into the vertical pipe 19, reducing the impact of the outlet pipe 8 on the liquid flow rate.

[0032] The method of use in this embodiment is as follows: When using the mixing equipment in the production of ammonium perchlorate, the equipment needs to be connected to an external power supply first. Then, solvent and surfactant are introduced into the inlet pipe 6, and ammonium perchlorate crystal powder is poured into the feed pipe 7 at the same time, so that the ammonium perchlorate falls into the inlet pipe 6 and is pre-contacted and mixed with the solvent in the inlet pipe 6 before flowing into the mixing tank 5. Then, the stirring motor 1 can be started, so that the stirring motor 1 drives the stirring shaft 14 to rotate, which drives the dispersion disk 15 and the circular plate 16 to rotate, so as to fully stir the ammonium perchlorate powder and solvent falling into the mixing tank 5. At the same time, coolant needs to be introduced into the coolant inlet pipe 3, so that the coolant flows in the hollow ring 2, so that the coolant absorbs the heat generated by the high-speed rotation and friction of the mechanical seal 13, and then absorbs... After the heat is absorbed, the coolant will flow out of the hollow ring 2 through the coolant outlet pipe 4. Then, the circulating water pump 10 can be started, so that the circulating water pump 10 draws the solution in the stirred tank 5 from the circulating pipe 12 to the return pipe 11, injecting the floating liquid below, which accelerates the liquid flow. Then, the accelerated liquid is pumped out from the top of the vertical pipe 19, so that the ammonium perchlorate crystals that have settled on the filter screen 18 at the bottom of the stirred tank 5 are pushed towards the high-speed rotating circular plate 16. When the crystals collide with the circular plate 16, they will be broken up. Then, driven by the water flow, they flow through the through hole 17 to the dispersion plate 15, so that the dispersion plate 15 re-stirs and mixes the ammonium perchlorate crystals. After the ammonium perchlorate is stirred and mixed, the solenoid valve 20 can be opened, so that the mixed solution is discharged from the outlet pipe 8.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mixing and blending device for ammonium perchlorate production, comprising a stirring vessel (5), characterized in that: A stirring motor (1) is installed at the top of the stirring vessel (5). A mechanical seal (13) is provided at the junction of the stirring motor (1) and the stirring vessel (5). A hollow ring (2) is provided at the top of the mechanical seal (13). A coolant inlet pipe (3) passes through one side wall of the hollow ring (2), and a coolant outlet pipe (4) passes through the other side wall of the hollow ring (2). A stirring shaft (14) is provided at the output end of the stirring motor (1). Multiple dispersion discs (15) are provided at the top of the stirring shaft (14). A circular plate (16) is provided at the bottom end of the stirring shaft (14). Multiple through holes (17) are opened at the top of the circular plate (16). A liquid inlet pipe (6) is passed through the top of one side wall of the stirring vessel (5), and a feed pipe (7) is passed through the top of the liquid inlet pipe (6). A circulation pipe (12) is passed through the top of the other side wall of the stirring vessel (5). A vertical pipe (19) is passed through the middle of the bottom of the stirring vessel (5). A return pipe (11) is passed through the bottom of one side wall of the vertical pipe (19). An outlet pipe (8) is passed through the other side wall of the vertical pipe (19). A base (9) is fixedly connected to the bottom of the stirring vessel (5) by a fixed support foot. A circulating water pump (10) is installed on one side of the top of the base (9).

2. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: The hollow ring (2) is sleeved and connected to the stirring motor (1), and coolant flows inside the hollow ring (2).

3. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: The inside of the feed pipe (7) is connected to the inside of the liquid inlet pipe (6), and the inside of the liquid inlet pipe (6) is connected to the inside of the stirring vessel (5).

4. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: The bottom end of the circulation pipe (12) is connected to the inlet of the circulation pump (10), one end of the return pipe (11) is connected to the outlet of the circulation pump (10), and the other end of the return pipe (11) passes through one side wall of the vertical pipe (19).

5. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: The dispersion disc (15) and the circular plate (16) are rotatably connected to the stirring vessel (5) via the stirring shaft (14).

6. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: A filter screen (18) is provided at the junction of the vertical pipe (19) and the bottom of the stirring vessel (5), and the filter screen (18) is located directly below the circular plate (16).

7. The mixing and blending equipment for ammonium perchlorate production according to claim 1, characterized in that: A solenoid valve (20) is provided at one end of the outlet pipe (8) near the vertical pipe (19), and the interior of the outlet pipe (8) is connected to the interior of the vertical pipe (19) through the solenoid valve (20).

Images