Cooling device for nitrate slurry

Abstract

The utility model discloses a cooling device for nitrate slurry. The cooling device comprises a cooling box, the sludge discharging opening is formed in the center of the bottom of the cooling box; the stirring part is arranged at the top of the cooling box, the stirring part comprises a driving shaft rotationally installed in the sludge discharging opening, three stirring rods are fixedly connected to the outer wall of the driving shaft at equal intervals, and a plurality of obliquely-arranged stirring blades are fixedly connected to the tops of the stirring rods and used for changing the flowing path of materials and enhancing the flowability of the materials; the slurry cooling device has the beneficial effects that through the arrangement of the stirring part, the stirring rod and the stirring blades can effectively increase the contact area between slurry and the inner wall of the cooling box, the conduction and the dissipation of heat are promoted, and the cooling process is accelerated; in addition, the annular shell and the separation metal sheets in the annular shell form an efficient heat exchange structure, cooling water flows in the multiple channels, sufficient heat exchange is conducted between the cooling water and the outer wall of the cooling box, and the cooling efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology, specifically a cooling device for nitrate slurry. Background Technology

[0002] A concentrated solution, primarily composed of nitrates, is evaporated into a slurry by a tube bundle dryer. After being discharged outside the equipment and left to stand for 30-35 minutes, the slurry spontaneously combusts. The cause of this problem is that the internal pressure of the tube bundle dryer is -80 kPa. After being discharged outside the equipment, the pressure of the slurry becomes negative pressure, turning into normal pressure. This causes the nitrates to react with other media in the slurry, releasing a large amount of heat and leading to spontaneous combustion. Therefore, after the slurry is discharged outside the equipment, it needs to be cooled rapidly to prevent spontaneous combustion and eliminate safety hazards. Existing cooling methods only rely on stirring, which is inefficient and ineffective. Summary of the Invention

[0003] The purpose of this invention is to provide a cooling device for nitrate slurry to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for nitrate slurry, comprising:

[0005] Cooling box;

[0006] The mud discharge port is located at the center of the bottom of the cooling tank;

[0007] The stirring section is located at the top of the cooling tank. The stirring section includes a drive shaft that is rotatably installed inside the mud discharge port. Three stirring rods are fixedly connected at equal intervals to the outer wall of the drive shaft. Multiple inclined stirring blades are fixedly connected to the top of the stirring rods to change the flow path of the material and enhance the fluidity of the material.

[0008] An annular shell is disposed on the outside of the cooling box, and the interior of the annular shell is provided with a separating metal plate for heat conduction and forming an annular water channel.

[0009] Preferably, the bottom of the cooling box is fixedly connected to a base.

[0010] Preferably, the bottom of the base is provided with an electric knife gate valve for sealing the mud discharge port.

[0011] Preferably, the stirring unit includes a support beam fixed to the top of the cooling tank, and a stirring motor is fixedly connected to the top of the support beam. The output end of the stirring motor is fixedly connected to the drive shaft.

[0012] Preferably, a cold water inlet and a cold water outlet are fixedly connected to the outer side of the annular shell, and the cold water outlet is located above the cold water inlet.

[0013] Preferably, the separating metal sheet has a ring structure, with the inner wall of the separating metal sheet fitting against the outer wall of the cooling box and the outer wall of the separating metal sheet fitting against the ring shell. A notch is provided in the middle of the separating metal sheet, and the positions of the notches of the upper and lower separating metal sheets are staggered.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The stirring section effectively increases the contact area between the slurry and the inner wall of the cooling tank, promoting heat conduction and dissipation, and accelerating the cooling process. The annular shell and its internal partition metal plates form a highly efficient heat exchange structure, allowing cooling water to flow in multiple channels and fully exchange heat with the outer wall of the cooling tank, further improving cooling efficiency. The stirring rod and inclined stirring blades enable the material to flow along a specific path, improving material flowability and mixing efficiency, and contributing to uniform cooling of the slurry. The arrangement of the cold water inlet and outlet, as well as the notches in the partition metal plates, enhances the water circulation effect, ensuring that heat is evenly carried away from the entire cooling tank area. The arrangement of the water flow direction makes the cooling water flow path longer, increasing the contact time with the material and the outer wall of the equipment, thereby improving heat exchange efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the position and structure of the electric knife gate valve of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the metal separator of this utility model;

[0018] Figure 4 This is a schematic diagram of the cold water outlet structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the stirring blade of this utility model.

[0020] In the diagram: 1. Base; 2. Cooling box; 3. Agitator motor; 4. Support beam; 5. Drive shaft; 6. Agitator rod; 7. Agitator blades; 8. Electric knife gate valve; 9. Mud discharge port; 10. Annular shell; 11. Separating metal plate; 12. Cold water inlet; 13. Cold water outlet. 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] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: a cooling device for nitrate slurry, comprising: a circular cooling box 2 with an opening at the top; a sludge discharge port 9 located at the center of the bottom of the cooling box 2; a stirring section located at the top of the cooling box 2, the stirring section including a drive shaft 5 rotatably installed inside the sludge discharge port 9, three stirring rods 6 being equidistantly fixed to the outer wall of the drive shaft 5, and multiple inclined stirring blades 7 being fixed to the top of the stirring rods 6 for changing the flow path of the material and enhancing the fluidity of the material; and an annular shell 10 fixed to the outside of the cooling box 2, the annular shell 10 having a separating metal plate 11 inside for conducting heat and forming an annular water channel.

[0023] It should be noted that in this embodiment, the stirring rod 6 stirs the slurry inside the cooling tank 2, which increases the contact area between the material and the inner wall of the cooling tank 2, thereby accelerating the conduction and dissipation of heat and helping to cool down. The annular shell 10 is provided with a separating metal plate 11 inside. The separating metal plate 11 helps to cool down the material inside the cooling tank 2 by conducting heat. The metal plate can introduce the slurry into the annular shell 10 to exchange heat with water. Before the slurry is discharged to the cooling tank 2, the drive shaft 5 drives the stirring blade 7 to stir first, and then the cooling water enters the annular shell 10 through circulation. The cooling water is continuous. The slurry dried by the tube bundle dryer is quickly discharged to the cooling tank 2. The heat is indirectly exchanged between the cooling water by stirring the slurry, and the stirring rod 6 is used to increase the heat exchange rate, so that the slurry releases heat and cools down quickly. After the temperature drops, the nitrates in the slurry no longer react with other media, thereby eliminating the existence of this safety hazard.

[0024] In one embodiment, such as Figure 1 , 2 As shown in Figures 1 and 3, a base 1 is fixedly connected to the bottom of the cooling box 2, and an electric knife gate valve 8 for sealing the mud discharge port 9 is provided at the bottom of the base 1.

[0025] It should be noted that in this embodiment, the base is located at the bottom of the cooling box 2, which serves as a support to ensure the stability and structural robustness of the cooling box. The electric knife gate valve is installed at the bottom of the base 1 to block the mud discharge port 9 of the cooling box. When it is necessary to discharge materials, the mud discharge port can be opened quickly through the electric knife gate valve. By precisely controlling the opening and closing of the mud discharge port, the discharge flow rate can be adjusted to avoid excessive material leakage or the inability to discharge materials in the cooling box in a timely manner.

[0026] In one embodiment, such as Figure 1 , 4 As shown, the stirring unit includes a support beam 4 fixed to the top of the cooling box 2, and a stirring motor 3 is fixedly connected to the top of the support beam 4. The output end of the stirring motor 3 is fixedly connected to the drive shaft 5.

[0027] It should be noted that in this embodiment, the drive shaft 5 is installed inside the discharge port and rotated by the stirring motor 3. The drive shaft is responsible for transmitting power, ensuring the rotation of the stirring rods, thereby driving the entire cooling process. Three stirring rods are equidistantly fixed to the outer wall of the drive shaft. The stirring rods promote the flow, mixing, and heat dissipation of the material through rotation. Multiple inclined stirring blades are installed on the top of the stirring rods. The inclined design of the blades allows the material to flow along a specific path, improving the material's flowability and mixing efficiency.

[0028] In one embodiment, such as Figure 1 , 3 As shown in Figure 4, a cold water inlet 12 and a cold water outlet 13 are fixedly connected to the outer side of the annular shell 10, and the cold water outlet 13 is located above the cold water inlet 12. The separating metal sheet 11 has an annular structure, the inner wall of the separating metal sheet 11 is attached to the outer wall of the cooling box 2, the outer wall of the separating metal sheet 11 is attached to the annular shell 10, and a notch is provided in the middle of the separating metal sheet 11. The notches of the upper and lower separating metal sheets 11 are staggered.

[0029] It should be noted that in this embodiment, the annular shell 10 surrounds the outside of the cooling tank 2, forming a circulating water tank between the annular shell 10 and the cooling tank 2. A separating metal plate 11 is welded inside the circulating water tank, dividing it into multiple channels or areas. The cooling water flowing in each channel exchanges heat with the outer wall of the cooling tank, thereby improving cooling efficiency. Connecting the cold water pipe to the cold water inlet 12 allows the cooling water to flow in from below, spreading upwards layer by layer through the gaps in the separating metal plate 11. After exchanging heat with the cooling tank through the annular water path, it is discharged from the top. This arrangement of water inlet and outlet enhances the water circulation effect, ensuring that heat is evenly carried away from the entire cooling tank area. The arrangement of the water flow direction makes the cooling water flow path longer, increasing the contact time with materials and the outer wall of the equipment, thereby improving heat exchange efficiency.

[0030] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0031] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling device for nitrate slurry, characterized in that: include: Cooling box (2); The mud discharge port (9) is located at the center of the bottom of the cooling box (2); The stirring part is set on the top of the cooling box (2). The stirring part includes a drive shaft (5) that is rotatably installed inside the mud discharge port (9). Three stirring rods (6) are fixedly connected at equal intervals on the outer wall of the drive shaft (5). Multiple inclined stirring blades (7) are fixedly connected to the top of the stirring rods (6) to change the flow path of the material and enhance the fluidity of the material. An annular shell (10) is provided on the outside of the cooling box (2). The interior of the annular shell (10) is provided with a separating metal plate (11) for heat conduction and forming an annular water channel.

2. The cooling device for nitrate slurry according to claim 1, characterized in that: The bottom of the cooling box (2) is fixedly connected to a base (1).

3. The cooling device for nitrate slurry according to claim 2, characterized in that: The bottom of the base (1) is provided with an electric knife gate valve (8) for sealing the mud discharge port (9).

4. The cooling device for nitrate slurry according to claim 1, characterized in that: The stirring unit includes a support beam (4) fixed to the top of the cooling box (2), and a stirring motor (3) is fixedly connected to the top of the support beam (4). The output end of the stirring motor (3) is fixedly connected to the drive shaft (5).

5. The cooling device for nitrate slurry according to claim 1, characterized in that: A cold water inlet (12) and a cold water outlet (13) are fixedly connected to the outer side of the annular shell (10), and the cold water outlet (13) is located above the cold water inlet (12).

6. The cooling device for nitrate slurry according to claim 5, characterized in that: The separating metal sheet (11) has a ring structure. The inner wall of the separating metal sheet (11) is attached to the outer wall of the cooling box (2), and the outer wall of the separating metal sheet (11) is attached to the ring shell (10). A notch is provided in the middle of the separating metal sheet (11), and the notches of the upper and lower separating metal sheets (11) are staggered.

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