Emergency cooling device for noble metal dissolving kettle

Abstract

The utility model discloses a kind of precious metal dissolving kettle emergency cooling device, involve emergency cooling device field.The utility model includes dissolving kettle and cooling device, the cooling device includes first coil pipe, second coil pipe, and the first connecting flange of first coil pipe both ends, second connecting flange, by setting up the strengthening mechanism including turbulent flow blade, wherein the turbulent flow blade is installed on rotating rod, rotating rod is connected in the inboard of mounting flange plate by bearing seat, when cooling liquid flows from first connecting flange and third connecting flange inlet end, fluid impact blade upwind face drives rotating rod rotation, forcibly destroys coil pipe inner layer flow boundary layer;It is simultaneously adopted that first coil pipe and second coil pipe reverse winding on the layout mode of kettle body outer surface, cooperate coil pipe inlay structure and copper heat conduction material, solve the technical problem that the heat transfer efficiency attenuation of traditional cooling device due to laminar flow, thermal resistance increases, finally restricts emergency cooling response speed and refrigeration capacity.

Description

Technical Field

[0001] This utility model relates to the field of emergency cooling devices, specifically an emergency cooling device for a precious metal melting kettle. Background Technology

[0002] A precious metal dissolving vessel is a specialized chemical equipment used to dissolve precious metals such as gold, silver, platinum, and palladium. Through specific chemical reaction conditions and process parameters, it transforms precious metals from a solid or alloy state into soluble ionic or compound forms, facilitating subsequent separation, purification, or recycling. The emergency cooling device for the metal dissolving vessel is a metal coil located on the outside of the vessel. A cooling medium, such as chilled water or refrigerant, flows inside this coil. When the temperature inside the vessel rises abnormally and triggers a safety alarm, the cooling medium rapidly circulates through the coil, quickly removing the heat dissipated by the vessel through heat exchange, thus achieving emergency cooling of the metal dissolving vessel and preventing safety accidents or equipment damage caused by excessive temperature.

[0003] However, during use, due to the flow rate of the coolant in the pipe, the liquid gradually forms a laminar flow. This laminar flow state leads to a significant decrease in the heat exchange efficiency between the cooling medium and the outer wall of the vessel. This is because the internal flow of the laminar fluid is mainly parallel, and heat transfer perpendicular to the pipe wall relies mainly on inefficient heat conduction rather than efficient turbulent mixing and convection. At the same time, laminar flow thickens the fluid boundary layer near the inner wall of the coil, forming a large thermal resistance, which further hinders the transfer of heat from the high-temperature vessel to the low-temperature cooling medium. In critical situations of emergency cooling, this decrease in heat exchange efficiency caused by laminar flow will severely restrict the response speed and maximum cooling capacity of the cooling device. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an emergency cooling device for a precious metal melting vessel to solve the technical problem of heat transfer efficiency reduction and thermal resistance increase caused by laminar flow of coolant in the coil, which in turn restricts the emergency cooling response speed and cooling capacity.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an emergency cooling device for a precious metal melting kettle, comprising a melting kettle and a cooling device, wherein the cooling device comprises a first coil and a second coil, and a first connecting flange and a second connecting flange at both ends of the first coil, and a third connecting flange and a fourth connecting flange at both ends of the second coil.

[0006] The first and third connecting flanges are coolant inlet ends, and the second and fourth connecting flanges are coolant outlet ends. Reinforcing mechanisms are installed on the first and third connecting flanges.

[0007] The reinforcing mechanism includes a mounting flange, on the inner side of which a bearing seat is mounted via a connector, and a rotating rod is mounted on the bearing seat via a bearing, the rotating rod being provided with turbulence blades.

[0008] By adopting the above technical solution, and by strengthening the design of the rotating rod and turbulent blades of the mechanism, the coolant impacts the sharp-angled surface of the blades to drive rotation, forcibly breaking the laminar flow state inside the coil; the two coils are independently connected through flanges to ensure high-speed injection of the cooling medium through two channels, avoiding the risk of failure of a single pipeline, and eliminating the laminar heat transfer barrier from the structural root.

[0009] Furthermore, the reinforcing mechanism is made of stainless steel, and the cooling device is made of copper.

[0010] By adopting the above technical solutions, the stainless steel reinforcement mechanism resists the corrosion and loss of coolant, ensuring the long-term reliability of the rotating components; the copper coil utilizes the high thermal conductivity of metal to accelerate the heat dissipation of the vessel body, and the material properties and structural functions are precisely matched to maximize corrosion resistance and heat transfer efficiency at the same time.

[0011] Furthermore, the first coil and the second coil are wound around the outer surface of the vessel body, and the first coil and the second coil are embedded in the vessel body.

[0012] By adopting the above technical solution, the first and second coils are wound and embedded on the outer surface of the vessel body, eliminating the contact air gap thermal resistance of traditional external coils, enabling zero heat loss from the vessel body to be conducted to the copper tube wall, and expanding the heat exchange area through the winding layout to enhance the heat dissipation capacity per unit time.

[0013] Furthermore, the dissolving vessel includes a vessel body, and a plurality of side ears are provided on the upper surface of the outer surface of the vessel body, and the bottom of the plurality of side ears is detachably connected to a support column by bolts.

[0014] By adopting the above technical solution, the bolt disassembly structure of the side lug and the support column provides maintenance and operation space for the embedded coil, avoids interference and damage to the cooling device during equipment maintenance, and extends the service life of the system.

[0015] Furthermore, a lid is provided on the top of the vessel body, and a motor base is provided at the top axis of the lid. The motor output end inside the motor base passes through the vessel body and is fixedly connected to a stirring rod.

[0016] By adopting the above technical solution, the motor base shaft passes through the kettle lid to drive the stirring rod, maintain the homogeneous flow of the solution, prevent the temperature difference stratification caused by local solution stasis during the cooling process, and ensure the uniformity of cooling.

[0017] Furthermore, a feed inlet is provided on one side of the top of the vessel lid, and multiple sensor probe mounting ports are provided on the other side of the top of the vessel lid.

[0018] By adopting the above technical solution, the feed inlet and the sensor probe mounting port are located on the two sides of the top of the vessel lid, which realizes physical isolation between the feeding and temperature / pressure monitoring functions and prevents the sensor from failing due to feeding contamination.

[0019] Furthermore, the turbulent blades are evenly distributed along the circumference of the rotating rod, and the blade's frontal surface is inclined at an acute angle to the axial direction of the rotating rod.

[0020] By adopting the above technical solution, the turbulent blades are evenly distributed circumferentially and tilted at an acute angle, which optimizes the conversion efficiency of fluid impact kinetic energy and enables the rotating rod to maintain the rotational speed required for turbulence generation even under low flow velocity conditions.

[0021] Furthermore, the first coil and the second coil are arranged on the outer surface of the vessel body in a reverse winding manner.

[0022] By adopting the above technical solution, the first coil and the second coil are wound in opposite directions to form a counter-rotating cooling medium path, which forces and equalizes the axial temperature distribution of the vessel body and eliminates the heat accumulation effect of unidirectional winding.

[0023] In summary, the present invention has the following main advantages:

[0024] This invention solves the technical problem of traditional cooling devices that suffer from reduced heat transfer efficiency and increased thermal resistance due to laminar flow, ultimately limiting emergency cooling response speed and cooling capacity. The turbulent blades are mounted on a rotating rod connected to the inner side of the mounting flange via a bearing seat. When coolant flows in from the inlet ends of the first and third connecting flanges, the fluid impacts the blades' flow-facing surface, driving the rotating rod to rotate and forcibly disrupting the laminar boundary layer inside the coil. Simultaneously, the layout of the first and second coils winding counter-clockwise around the outer surface of the vessel, combined with the coil embedding structure and copper thermally conductive material, solves this problem. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0027] Figure 3 This is a partial three-dimensional structural diagram of the reinforcing mechanism of this utility model;

[0028] Figure 4 This is a side view cross-sectional three-dimensional structural diagram of the reinforcing mechanism of this utility model.

[0029] In the diagram: 1. Dissolving vessel; 101. Vessel body; 102. Side lug; 103. Support column; 104. Vessel lid; 105. Motor base; 106. Sensor probe mounting port; 107. Feed inlet; 2. Cooling device; 201. First connecting flange; 202. Second connecting flange; 203. First coil; 204. Second coil; 205. Third connecting flange; 206. Fourth connecting flange; 3. Reinforcing mechanism; 301. Mounting flange; 302. Connecting piece; 303. Rotating rod; 304. Turbulent blade. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] An emergency cooling device for a precious metal melting vessel, such as Figure 1-4 As shown, it includes a dissolving vessel 1 and a cooling device 2. The cooling device 2 includes a first coil 203 and a second coil 204. The first coil 203 has a first connecting flange 201 and a second connecting flange 202 at both ends. The second coil 204 has a third connecting flange 205 and a fourth connecting flange 206 at both ends.

[0032] The first connecting flange 201 and the third connecting flange 205 are coolant inlet ends, the second connecting flange 202 and the fourth connecting flange 206 are coolant outlet ends, and the first connecting flange 201 and the third connecting flange 205 are equipped with a reinforcing mechanism 3.

[0033] The reinforcing mechanism 3 includes a mounting flange 301. A bearing housing is mounted on the inner side of the mounting flange 301 via a connector 302. A rotating rod 303 is mounted on the bearing housing via a bearing. Turbulent blades 304 are provided on the rotating rod 303. When coolant is injected at high speed from the first connecting flange 201 and the third connecting flange 205, the fluid impacts the acute-angled frontal surface of the turbulent blades 304 of the reinforcing mechanism 3, driving the rotating rod 303 to rotate at high speed via the bearing. This continuously disrupts the laminar boundary layer inside the coil and generates a three-dimensional turbulent vortex. At the same time, the first coil 203 forms an independent flow loop with the second connecting flange 202 via the first connecting flange 201, and the second coil 204 constructs a parallel cooling channel with the fourth connecting flange 206 via the third connecting flange 205. This dual-pipeline structure eliminates system failure caused by blockage or leakage in a single path, ensuring unimpeded delivery of the cooling medium and efficient turbulent heat transfer during emergency cooling.

[0034] See Figure 1 , Figure 4The reinforcing mechanism 3 is made of stainless steel, while the cooling device 2 is made of copper. The stainless steel construction of the reinforcing mechanism 3 ensures that the rotating rod 303, turbulent blades 304, and bearing housing resist electrochemical corrosion and erosion wear under long-term contact with coolant, maintaining the mechanical stability of the rotating components. The first coil 203 and the second coil 204 of the cooling device 2 are made of copper. Utilizing the thermal conductivity of copper (>380W / m·K), the heat on the surface of the vessel 101 is efficiently conducted to the cooling medium through metal lattice vibration. Through the directional coupling of material physical properties and component functions, a dual improvement in corrosion resistance and heat transfer rate is achieved without quantitative parameter intervention.

[0035] See Figure 3 , Figure 4 The first coil 203 and the second coil 204 are wound around the outer surface of the vessel body 101 and embedded in the vessel body. The first coil 203 and the second coil 204 are directly wound around the outer wall of the vessel body 101 and fixed in place, completely eliminating the air insulation layer between the external coil and the vessel body 101, so that the heat energy on the surface of the vessel body 101 can be conducted to the inner wall of the copper coils 203 and 204 through the metal contact surface with zero attenuation. The wound layout increases the effective heat exchange area by more than 200% compared with the straight tube structure. Through the dual effects of extending the heat exchange interface and close fit, the heat of the vessel body 101 can be transferred to the cooling medium instantaneously and efficiently in emergency conditions.

[0036] See Figure 1 , Figure 2 The dissolving vessel 1 includes a vessel body 101. Multiple side ears 102 are provided on the upper surface of the vessel body 101, and the bottom of the multiple side ears 102 is detachably connected to the support column 103 by bolts. Multiple side ears 102 are provided on the outer wall of the vessel body 101 of the dissolving vessel 1. The bottom of the side ears 102 is connected to the detachable support column 103 by bolts. This structure provides stable support during normal operation. When it is necessary to inspect and repair the coils 203 and 204 embedded in the vessel body 101, the support column 103 can be separated by simply removing the bolts, obtaining a 360° unobstructed maintenance space for the coils. This avoids the scratch damage or disassembly deformation caused by the traditional welded support frame to the surface of the coils 203 and 204, fundamentally ensuring the structural integrity and service life of the cooling device 2.

[0037] See Figure 3 , Figure 4The top of the vessel body 101 is provided with a vessel cover 104, and a motor base 105 is provided at the top axis of the vessel cover 104. The motor output end inside the motor base 105 passes through the vessel body 101 and is fixedly connected to a stirring rod. The motor base 105 is fixed at the top axis of the vessel cover 104. The motor output shaft passes vertically through the vessel cover 104 and is connected to the stirring rod, which extends into the vessel body 101. During emergency cooling, the solution is continuously driven to rotate and flow, eliminating the solution temperature stratification caused by local heat absorption by the cooling coils 203 and 204. The forced convection formed by stirring promotes rapid mixing of the solution in the high-temperature area and the low-temperature area, realizing dynamic equilibrium of the temperature field throughout the vessel and avoiding the problem of excessive axial temperature difference caused by traditional static cooling.

[0038] See Figure 1 The top of the vessel lid 104 has a feed inlet 107 on one side and multiple sensor probe mounting ports 106 on the other side. The spatial separation design prevents splashing droplets from contacting the probes during the feeding process. The sensor signal line is sealed and connected through a dedicated mounting port 106 to monitor the temperature and pressure changes inside the vessel during the cooling process in real time. The feeding operation is completed through the feed inlet 107, which is far away from the monitoring area, thus completely solving the problem of sensor data drift or damage caused by feeding contamination in the traditional common port design.

[0039] See Figure 1 , Figure 2 The turbulent blades 304 are evenly distributed around the circumference of the rotating rod 303, and the blades' frontal surface is inclined at an acute angle to the axis of the rotating rod. The turbulent blades 304 are arranged at equal angles around the circumference of the rotating rod 303, and the frontal surface of each blade is inclined at an acute angle of 20°-60° to the axis of the rod. When the coolant flows through the inlet flanges 201 and 205, the acute angled surface decomposes the fluid impact force into axial thrust and tangential force, maximizing the efficiency of driving torque generation. The uniform layout ensures that the rotating rod 303 is subjected to balanced forces, so that the blades can still rotate stably when the coolant flow rate fluctuates, ensuring that the laminar flow disruption effect covers the entire flow condition.

[0040] See Figure 3 , Figure 4 The first coil 203 and the second coil 204 are arranged on the outer surface of the vessel body 101 in a counter-winding manner. The first coil 203 is wound clockwise around the outer wall of the vessel body 101, and the second coil 204 is wound counter-clockwise. The two streams of coolant form a counter-flow within the coils 203 and 204. The counter-winding arrangement allows high-temperature areas, such as the middle section of the vessel body, to simultaneously contact the two counter-flowing cooling media. The axial thermal gradient caused by unidirectional winding is offset by the heat flow counteraction, achieving a uniform temperature field distribution on the surface of the vessel body 101 and eliminating the risk of end overheating in traditional single-coil cooling.

[0041] The implementation principle of this embodiment is as follows: First, the coolant enters the first coil 203 through the first connecting flange 201, and at the same time enters the second coil 204 through the third connecting flange 205. When flowing through the flange inlet, the coolant impacts the acute-angled frontal surface of the turbulent blade 304, generating a rotational driving force on the rotating rod 303. The rotating rod 303 rotates on the bearing seat through the bearing, driving the turbulent blade 304 to continuously cut the fluid. The rotational motion of the turbulent blade 304 forcibly breaks the laminar flow state of the coolant and generates a three-dimensional vortex in the coil.

[0042] At the same time, the first coil 203 is wound around the outer surface of the vessel body 101 in the first direction, and the second coil 204 is wound in the opposite direction to form a dual-channel heat exchange network.

[0043] Heat from the vessel body 101 is conducted to the copper coil walls 203 and 204 through the contact surface, and then discharged through the convective heat exchange of the coolant enhanced by turbulence.

[0044] Finally, the cooled coolant is discharged from the second connecting flange 202 corresponding to the first coil 203 and the fourth connecting flange 206 corresponding to the second coil 204.

[0045] The stainless steel reinforcing mechanism 3 is designed to resist coolant corrosion and ensure long-term reliable operation of the rotating components.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An emergency cooling device for a precious metal melting vessel, characterized in that: It includes a dissolving vessel (1) and a cooling device (2). The cooling device (2) includes a first coil (203) and a second coil (204). The first coil (203) has a first connecting flange (201) and a second connecting flange (202) at both ends. The second coil (204) has a third connecting flange (205) and a fourth connecting flange (206) at both ends. The first connecting flange (201) and the third connecting flange (205) are coolant inlet ends, the second connecting flange (202) and the fourth connecting flange (206) are coolant outlet ends, and the first connecting flange (201) and the third connecting flange (205) are equipped with a reinforcing mechanism (3); The strengthening mechanism (3) includes a mounting flange (301), on the inner side of the mounting flange (301) a bearing seat is mounted via a connector (302), and a rotating rod (303) is mounted on the bearing seat via a bearing, and a turbulence blade (304) is provided on the rotating rod (303).

2. The emergency cooling device for a precious metal melting vessel according to claim 1, characterized in that: The reinforcing mechanism (3) is made of stainless steel, and the cooling device (2) is made of copper.

3. The emergency cooling device for a precious metal melting vessel according to claim 1, characterized in that: The first coil (203) and the second coil (204) are wound around the outer surface of the vessel body (101), and the first coil (203) and the second coil (204) are embedded in the vessel body.

4. The emergency cooling device for a precious metal melting vessel according to claim 1, characterized in that: The dissolving vessel (1) includes a vessel body (101), and a plurality of side ears (102) are provided on the upper surface of the outer surface of the vessel body (101), and the bottom of the plurality of side ears (102) is connected to a support column (103) by bolts.

5. The emergency cooling device for a precious metal melting vessel according to claim 4, characterized in that: The top of the vessel body (101) is provided with a vessel cover (104), and a motor base (105) is provided at the top axis of the vessel cover (104). The motor output end in the motor base (105) passes through the vessel body (101) and is fixedly connected to a stirring rod.

6. The emergency cooling device for a precious metal melting vessel according to claim 5, characterized in that: The top side of the lid (104) is provided with a feed inlet (107), and the other side of the lid (104) is provided with multiple sensor probe mounting ports (106).

7. The emergency cooling device for a precious metal melting vessel according to claim 1, characterized in that: The turbulent blades (304) are evenly distributed around the circumference of the rotating rod (303), and the blades' frontal surface is inclined at an acute angle to the axial direction of the rotating rod.

8. The emergency cooling device for a precious metal melting vessel according to claim 1, characterized in that: The first coil (203) and the second coil (204) are arranged on the outer surface of the vessel body (101) in a reverse winding manner.

Images