Jacket type heat preservation mixing pot
The jacketed insulated mixing pot solves the safety risks of temperature instability in the preparation of explosives and solid propellants by using a circulating hot water jacket and an aluminum silicate fiber insulation layer. It achieves stable temperature control and uniform mixing, thereby improving product quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-04-03
AI Technical Summary
In the process of pyrochemicals and solid propellant preparation, the unstable temperature of the mixing equipment poses a high safety risk, and traditional equipment lacks effective temperature control methods, which affects the mixing effect and safety.
The jacketed insulated mixing pot is used, and the temperature is kept stable within the set range through the circulating hot water jacket and insulation layer components. Aluminum silicate fiber is used as the insulation material to reduce heat transfer and reduce temperature unevenness.
It achieves stable temperature control inside the mixing pot, improves the selectivity and yield of chemical reactions, reduces side reactions, improves product quality and enhances safety, and is environmentally friendly and pollution-free.
Smart Images
Figure CN224071894U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the fields of fire chemical engineering and solid propellant preparation technology, specifically to a jacketed insulated mixing pot. Background Technology
[0002] In the processes of pyrochemicals and solid propellant preparation, the mixing of multi-component raw materials is a crucial step. However, due to the complexity of the process environment and the influence of external conditions, this process is often accompanied by high safety risks. In actual operation, the environment in which the mixing equipment is located may experience temperature fluctuations, humidity changes, or unstable pressure. These factors can significantly affect the mixing effect and reaction safety of multi-component raw materials. Temperature changes may cause certain chemical components to react prematurely, leading to uncontrollable exothermic phenomena; while differences in humidity or pressure may alter the physical properties of the materials, resulting in uneven mixing or even localized aggregation. These problems not only affect the performance of the final product but may also cause serious safety accidents.
[0003] In addition, traditional mixing equipment often lacks effective temperature control methods. Especially during long-term operation, the temperature difference inside the equipment may cause changes in the physical state of the raw materials, further exacerbating the safety hazards in the mixing process. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a jacketed insulated mixing pot to solve the problem of high safety risks caused by unstable mixing pot temperature in the fields of fire chemical engineering and solid propellant preparation.
[0005] To achieve the above technical objectives, the present invention provides a jacketed insulated mixing pot, comprising:
[0006] The vessel comprises a pot body assembly, a water jacket assembly, and an insulation layer assembly. The pot body assembly is formed by welding an upper flange, an upper cylinder, a bottom plate, and a lower cylinder sequentially from top to bottom. The inlet cross-section of the upper flange is inverted trapezoidal. A V-shaped bevel is formed on one side of the inner side of the weld between the upper flange and the upper cylinder. A V-shaped bevel is formed on one side of the inner side of the weld between the upper cylinder and the upper flange. A V-shaped bevel is formed on one side of the outer side of the weld between the upper cylinder and the bottom plate. A V-shaped bevel is formed on one side of the outer side of the weld between the bottom plate and the upper cylinder. The upper end face of the lower cylinder is welded and fixed to the lower end face of the bottom plate. A U-shaped groove is formed on the outer wall of the upper flange. The opening direction of the U-shaped groove is horizontal. A positioning plate is welded to the middle outer wall of the upper cylinder. The positioning plate is annular. A first through hole is formed in a circumferential array on the positioning plate.
[0007] Compared with the prior art, the beneficial effects of this utility model include:
[0008] 1. Stable reaction conditions: By using circulating hot water for heat preservation, the temperature inside the mixing pot can be effectively controlled, ensuring that it remains stable within the set range, thereby improving the selectivity and yield of the chemical reaction.
[0009] 2. Uniform heating: Circulating hot water can evenly transfer heat to the inner wall of the mixing pot through heat conduction, avoiding local overheating or cold spots, and reducing incomplete mixing or abnormal local reactions caused by uneven temperature.
[0010] 3. Reduce side reactions: In some chemical reactions, excessively high or low temperatures may trigger side reactions, leading to a decrease in product purity or the generation of harmful substances. By using circulating hot water for insulation, the temperature can be strictly controlled within a suitable range, reducing the occurrence of side reactions and improving product quality.
[0011] 4. Environmental protection and safety: Using hot water as a heat transfer medium is safer than steam or other high-temperature media and will not cause pollution to the environment. Hot water circulation systems can usually recover waste heat, further improving energy efficiency. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of the jacketed insulated mixing pot provided by this utility model.
[0013] Figure 2 This is a schematic diagram of the assembly and welding structure of the pot body component provided by this utility model.
[0014] The attached diagram lists the components represented by each number as follows:
[0015] 1. Pot body assembly; 11. Upper flange; 12. Upper cylinder; 13. Bottom plate; 14. Lower cylinder; 11a. U-shaped groove; 1a. V-shaped bevel; 2. Positioning plate; 2a. First through hole; 3. Water jacket assembly; 31. Upper water jacket; 32. Lower water jacket; 33. First jacket bottom plate; 34. Second jacket bottom plate; 14a. Second through hole; 34a. Third through hole; 34b. Fourth through hole; 4. Insulation layer assembly; 41. Insulation board; 42. Insulation cotton; 5. Water inlet pipe; 6. Water outlet pipe. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0017] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0019] Please see Figure 1 , Figure 2 This embodiment provides a jacketed insulated mixing pot, including: a pot body assembly 1, a water jacket assembly 3, an insulation layer assembly 4, a water inlet pipe 5, and a water outlet pipe 6.
[0020] Furthermore, the pot body assembly 1 is formed by welding the upper flange 11, the upper cylinder 12, the pot bottom plate 13, and the lower cylinder 14 sequentially from top to bottom.
[0021] Furthermore, the inlet cross-section of the upper flange 11 is an inverted trapezoid, and a V-shaped bevel 1a is opened on one side of the inner side of the weld between the upper flange 11 and the upper cylinder 12, a V-shaped bevel 1a is opened on one side of the inner side of the weld between the upper cylinder 12 and the upper flange 11, a V-shaped bevel 1a is opened on one side of the outer side of the weld between the upper cylinder 12 and the bottom plate 13, and a V-shaped bevel 1a is opened on one side of the outer side of the weld between the bottom plate 13 and the upper cylinder 12.
[0022] Preferably, the V-groove 1a at the weld joint has the following advantages: 1. Increased welding area and improved joint strength: The V-groove design significantly increases the fusion area of the weld metal, enabling the weld to more firmly connect the two welded parts, thereby significantly improving the strength and load-bearing capacity of the welded joint; 2. Improved weld quality: The V-groove helps the welding material to better fill the weld, reducing the probability of defects such as incomplete penetration or slag inclusions, thereby improving the overall quality of the welded joint; 3. Facilitated operation and observation: The opening design of the V-groove makes it easier for welders to observe the weld formation, and facilitates the welding torch or electrode to penetrate deep into the weld root for operation, thereby ensuring the accuracy and consistency of the welding process; 4. Reduced stress concentration: The V-groove design makes the weld transition area smoother, avoiding stress concentration caused by abrupt changes in weld shape, which helps improve the fatigue resistance and service life of the welded joint; 5. Reduced welding deformation: Although the V-groove may increase the amount of welding material used, it can reduce thermal deformation and residual stress generated during welding to a certain extent because it can achieve a uniform heat input distribution.
[0023] Furthermore, the upper end face of the lower cylinder 14 is welded and fixed to the lower end face of the bottom plate 13. The outer wall of the upper flange 11 is provided with a U-shaped groove 11a, the opening direction of the U-shaped groove 11a is horizontal. The middle outer wall of the upper cylinder 12 is welded with a positioning plate 2, the positioning plate 2 is annular, and the positioning plate 2 is provided with a first through hole 2a in a circumferential array. The first through hole 2a allows the water inlet pipe 5 to reach the outer wall of the upper cylinder 12, so that the heat preservation water reaches the outer wall of the upper cylinder 12 to keep it warm.
[0024] Further, preferably, the upper flange 11 is machined from a forged blank, wherein the V-shaped bevel 1a formed on one side of the inner side of the weld between the upper flange 11 and the upper cylinder 12 has a depth of 7mm, an angle of 30°, and a blunt edge of 2.5mm. The upper cylinder 12 is made from a pipe blank, with a weld bevel machined by turning, wherein the V-shaped bevel 1a formed on one side of the inner side of the weld between the upper cylinder 12 and the upper flange 11 has a depth of 7mm, an angle of 30°, and no blunt edge. The V-shaped bevel 1a formed on one side of the weld between the upper cylinder 12 and the bottom plate 13 has a depth of 7mm and an angle of 30°. The lower cylinder 14 is made from a pipe blank, with a weld bevel machined by turning, wherein the bevel has a depth of 7mm, an angle of 30°, and a blunt edge of 2.5mm.
[0025] Furthermore, the water jacket assembly 3 includes an upper water jacket 31, a lower water jacket 32, a first jacket base plate 33, and a second jacket base plate 34.
[0026] Furthermore, the upper water jacket 31 and the lower water jacket 32 are made of rolled steel plate, the first jacket bottom plate 33 and the second jacket bottom plate 34 are made of cut steel plate, the top surface of the upper water jacket 31 is sealed and welded to the lower end surface of the U-shaped groove 11a, the bottom end surface of the upper water jacket 31 is sealed and welded to the upper end surface of the positioning plate 2, and the first through hole 2a is located between the upper water jacket 31 and the upper cylinder 12.
[0027] Preferably, in this embodiment, the upper water jacket 31 and the lower water jacket 32 are rolled from steel plates with a thickness of 2mm, and the first jacket bottom plate 33 and the second jacket bottom plate 34 are cut from steel plates with a thickness of 3mm.
[0028] Furthermore, the upper end face of the drain jacket 32 is sealed and welded to the lower end face of the positioning plate 2, one side of the first jacket bottom plate 33 is welded and fixed to the outer wall of the lower cylinder 14, the other side of the first jacket bottom plate 33 is sealed and welded to the outer wall of the drain jacket 32, and the wall surface of the second jacket bottom plate 34 is sealed and welded to the inner wall surface of the lower cylinder 14.
[0029] Furthermore, the lower cylinder 14 is provided with a second through hole 14a along the diameter direction; the second through hole 14a is located between the second jacket bottom plate 34 and the pot bottom plate 13.
[0030] Furthermore, the insulation layer assembly 4 includes an insulation board 41 and insulation cotton 42; the upper water jacket 31, the lower water jacket 32, the first jacket base plate 33, and the second jacket base plate 34 are covered by the insulation board 41; a gap is provided between the insulation board 41 and the upper water jacket 31, the lower water jacket 32, the first jacket base plate 33, and the second jacket base plate 34; the gap between the insulation board 41 and the upper water jacket 31, the lower water jacket 32, the first jacket base plate 33, and the second jacket base plate 34 is filled with the insulation cotton 42.
[0031] Preferably, the insulation board 41 is made of steel plate with a thickness of 3mm, which is rolled and cut.
[0032] Preferably, the insulation cotton 42 is made of aluminum silicate fiber. Aluminum silicate fiber as an insulation material has the following advantages: 1. Excellent high temperature resistance: Aluminum silicate fiber has extremely high fire resistance temperature and can usually withstand high temperatures of up to 1000℃~1400℃ (depending on its composition and manufacturing process); 2. Low thermal conductivity: Aluminum silicate fiber has a very low thermal conductivity, and can maintain good heat insulation effect even under high temperature conditions. It can effectively reduce heat transfer, reduce energy loss, and thus improve energy utilization efficiency.
[0033] Furthermore, after the mixing pot is welded, a sealing test is required, and machining is carried out after it passes the test.
[0034] This utility model also provides a method for preparing a jacketed insulated mixing pot:
[0035] S1. The upper flange 11 is machined from a forged blank. The V-shaped bevel 1a on one side of the weld between the upper flange 11 and the upper cylinder 12 has a depth of 7mm, an angle of 30°, and a blunt edge of 2.5mm. The upper cylinder 12 is made from a pipe blank, with a machined welding bevel. The V-shaped bevel 1a on one side of the weld between the upper cylinder 12 and the upper flange 11 has a depth of 7mm, an angle of 30°, and no blunt edge. The V-shaped bevel 1a on one side of the weld between the upper cylinder 12 and the bottom plate 13 has a depth of 7mm and an angle of 30°. The lower cylinder 14 is made from a pipe blank, with a machined welding bevel. The bevel has a depth of 7mm, an angle of 30°, and a blunt edge of 2.5mm.
[0036] S2. After the pot body assembly 1 is welded, the positioning plate 2 stop and the pot bottom plate 13 positioning stop are rough machined.
[0037] S3. Pre-process the first through hole 2a of the positioning plate 2 to assemble it with the pot body assembly 1 to form a clearance fit, and at the same time draw a reference line to ensure that the positioning plate 2 is assembled accurately.
[0038] S4. After rough machining, the pot body assembly 1 in step S2 is also marked with assembly reference lines, and welding is performed when it coincides with the reference line of the positioning plate 2.
[0039] S5. After the pot body assembly 1 is welded inverted, the water jacket 31 is pre-installed, and then the positioning plate 2 is assembled. After aligning with the baseline, welding is carried out.
[0040] S6. Assemble and weld the inlet pipe 5 and the outlet pipe 6.
[0041] S7. Assemble the drain jacket 32, the first jacket base plate 33 and the second jacket base plate 34.
[0042] S8. Using the positioning plate 2 as a reference, install the insulation plate 41 from the top and bottom respectively. Before installation, the insulation cotton 42 must be pressed into the cavity formed by the insulation plate 41, the upper water jacket 31, the lower water jacket 32, the first jacket bottom plate 33 and the second jacket bottom plate 34.
[0043] S9. After the overall assembly and welding are completed, a water pressure leak test is required to check the weld quality for defects such as porosity and slag inclusion.
[0044] S10. After completing step S9, perform machining to ensure that the inner hole, end face, and other elements meet the drawing requirements.
[0045] Furthermore, once the mixing pot is prepared, circulating hot water is introduced into the water inlet pipe 5 to keep the mixing pot warm, which has the following advantages:
[0046] 1. Maintaining stable reaction conditions: Circulating hot water effectively controls the temperature inside the mixing vessel, ensuring it remains stable within a set range, thereby improving the selectivity and yield of the chemical reaction. 2. Uniform heating: Circulating hot water can evenly transfer heat to the inner wall of the mixing vessel through heat conduction, avoiding localized overheating or cold spots, and reducing incomplete mixing or abnormal local reactions caused by uneven temperature. 3. Reducing side reactions: In chemical reactions, excessively high or low temperatures may trigger side reactions, leading to decreased product purity or the generation of harmful substances. Circulating hot water can strictly control the temperature within a suitable range, reducing the occurrence of side reactions and improving product quality. 4. Environmental protection and safety: Using hot water as a heat transfer medium is safer than steam or other high-temperature media and does not pollute the environment. Hot water circulation systems can usually recover waste heat, further improving energy efficiency.
[0047] Working principle: The jacketed insulated mixing pot provided by this utility model includes a pot body assembly 1, a water jacket assembly 3, and an insulation layer assembly 4; the pot body assembly 1 is formed by welding an upper flange 11, an upper cylinder 12, a pot bottom plate 13, and a lower cylinder 14 from top to bottom; the inlet cross-section of the upper flange 11 is an inverted trapezoid; a V-shaped bevel 1a is opened on one side of the inner side of the weld between the upper flange 11 and the upper cylinder 12; a V-shaped bevel 1a is opened on one side of the inner side of the weld between the upper cylinder 12 and the upper flange 11; the upper cylinder... A V-shaped bevel 1a is formed on one side of the weld between the bottom plate 12 and the bottom plate 13; a V-shaped bevel 1a is formed on one side of the weld between the bottom plate 13 and the upper cylinder 12; the upper end face of the lower cylinder 14 is welded and fixed to the lower end face of the bottom plate 13; a U-shaped groove 11a is formed on the outer wall of the upper flange 11; the opening direction of the U-shaped groove 11a is horizontal; a positioning plate 2 is welded to the middle outer wall of the upper cylinder 12; the positioning plate 2 is annular; the positioning plate 2 has a first through hole 2a arranged in a circumferential array.
[0048] Specifically, circulating hot water is introduced into the inlet pipe 5 to keep the mixing pot warm. This circulating hot water insulation effectively controls the temperature inside the mixing pot, ensuring it remains stable within a set range. This improves the selectivity and yield of the chemical reaction. Simultaneously, the circulating hot water can evenly transfer heat to the inner wall of the mixing pot through heat conduction, preventing localized overheating or cold spots. This uniform heating method helps achieve uniform heating or heat preservation of the mixture, reducing incomplete mixing or abnormal localized reactions caused by uneven temperature, thereby lowering safety risks during chemical mixing.
[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A jacketed insulated mixing pot, characterized in that, include: The vessel comprises a pot body assembly, a water jacket assembly, and an insulation layer assembly. The pot body assembly is formed by welding an upper flange, an upper cylinder, a bottom plate, and a lower cylinder sequentially from top to bottom. The inlet cross-section of the upper flange is inverted trapezoidal. A V-shaped bevel is formed on one side of the inner side of the weld between the upper flange and the upper cylinder. A V-shaped bevel is formed on one side of the inner side of the weld between the upper cylinder and the upper flange. A V-shaped bevel is formed on one side of the outer side of the weld between the upper cylinder and the bottom plate. A V-shaped bevel is formed on one side of the outer side of the weld between the bottom plate and the upper cylinder. The upper end face of the lower cylinder is welded and fixed to the lower end face of the bottom plate. A U-shaped groove is formed on the outer wall of the upper flange. The opening direction of the U-shaped groove is horizontal. A positioning plate is welded to the middle outer wall of the upper cylinder. The positioning plate is annular. A first through hole is formed in a circumferential array on the positioning plate.
2. The jacketed insulated mixing pot according to claim 1, characterized in that, The water jacket assembly includes an upper water jacket, a lower water jacket, a first jacket base plate, and a second jacket base plate; the upper and lower water jackets are made of rolled steel plates; the first and second jacket base plates are made of cut steel plates; the top surface of the upper water jacket is sealed and welded to the lower surface of the U-shaped groove; the bottom surface of the upper water jacket is sealed and welded to the upper surface of the positioning plate; the first through hole is located between the upper water jacket and the upper cylinder.
3. The jacketed insulated mixing pot according to claim 2, characterized in that, The upper end face of the drain jacket is sealed and welded to the lower end face of the positioning plate; one side of the first jacket bottom plate is welded and fixed to the outer wall of the lower cylinder; the other side of the first jacket bottom plate is sealed and welded to the outer wall of the drain jacket; the wall of the second jacket bottom plate is sealed and welded to the inner wall of the lower cylinder.
4. The jacketed insulated mixing pot according to claim 3, characterized in that, The lower cylinder has a second through hole along its diameter; the second through hole is located between the second jacket bottom plate and the pot bottom plate.
5. The jacketed insulated mixing pot according to claim 4, characterized in that, The insulation layer assembly includes an insulation board and insulation cotton; the upper water jacket, lower water jacket, first jacket base plate, and second jacket base plate are covered with the insulation board; a gap is provided between the insulation board and the upper water jacket, lower water jacket, first jacket base plate, and second jacket base plate; the gap between the insulation board and the upper water jacket, lower water jacket, first jacket base plate, and second jacket base plate is filled with the insulation cotton.
6. The jacketed insulated mixing pot according to claim 5, characterized in that, The second jacket bottom plate and the insulation plate below it are provided with a third through hole and a fourth through hole from top to bottom at the same position; a water inlet pipe is inserted into the third through hole; the water inlet pipe passes through the third through hole, through the second through hole and the first through hole; and the water outlet pipe is inserted into the fourth through hole.