Precious metal scrap dissolving reactor

Abstract

The utility model discloses a kind of precious metal waste dissolving reaction kettle, relating to precious metal recovery technical field, including sealing cover, feeding assembly, stirring assembly and heating reaction kettle assembly;Sealing cover upper end is equipped with feeding assembly, stirring assembly and heating reaction kettle assembly;Feeding assembly includes feed pipe, transition pipe, feed hopper, gas pipe one, negative pressure fan and air inlet pipe, the upper end eccentric position of the sealing cover is communicated with the one end of feed pipe, the upper end of the feed pipe is fixedly connected with transition pipe, the upper end of the transition pipe is fixedly connected with feed hopper, the inside of the feed pipe and feed hopper is provided with solenoid valve, the upper end of the sealing cover is communicated with air inlet pipe, the inside of the air inlet pipe is equipped with one-way solenoid valve, this precious metal waste dissolving reaction kettle, can prevent inside harmful gas from flowing out when feeding, can effectively clean the precious metal deposited in the inner wall of reaction kettle.

Description

Technical Field

[0001] This utility model relates to the field of precious metal recycling technology, specifically a precious metal waste dissolution reactor. Background Technology

[0002] Precious metal waste refers to waste or scrap items containing precious metals, such as waste electronic products, waste circuit boards, waste jewelry, and waste metal catalysts. Precious metals include gold, silver, platinum, palladium, etc., which have important application value in industries and jewelry. Various physical and chemical technologies are usually used in the process of recycling precious metal waste.

[0003] Among the existing technologies, the precious metal waste dissolving reactor proposed in the patent announcement number CN222901105U includes a reaction device, the reaction device includes a reactor body, the reactor body is provided with a filter device inside, the filter device includes a sieve cylinder, the outer surface of the sieve cylinder is fixedly connected with a first connecting member, the inner surface of the sieve cylinder is provided with a second limiting seat, and the inner surface of the sieve cylinder is fixedly connected with a rotating rod.

[0004] In existing technologies, harmful gases leak out during feeding, and precious metals accumulate on the inner wall of the reactor, making effective cleaning impossible. Therefore, we propose a precious metal waste dissolution reactor. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a precious metal waste dissolving reactor that can prevent harmful gases from flowing out during feeding and can effectively clean the precious metals deposited on the inner wall of the reactor, thus effectively solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precious metal waste dissolving reactor, comprising a sealing cover, a feeding assembly, a stirring assembly, and a heating reactor assembly;

[0007] Sealing cap: The upper end is equipped with a feeding assembly, a stirring assembly, and a heating reaction vessel assembly;

[0008] Feeding assembly: includes a feed pipe, a transition pipe, a feed hopper, an air delivery pipe, a negative pressure fan, and an air inlet pipe. One end of the feed pipe is eccentrically connected to the upper end of the sealing cover. The upper end of the feed pipe is fixedly connected to the transition pipe, and the upper end of the transition pipe is fixedly connected to the feed hopper. Solenoid valves are installed inside the feed pipe and the feed hopper. The upper end of the sealing cover is connected to the air inlet pipe, and a one-way solenoid valve is installed inside the air inlet pipe. The upper end of the air inlet pipe is fixedly connected to the air outlet of the negative pressure fan. One end of the air delivery pipe is connected to the transition pipe, and the other end of the air delivery pipe is connected to the air inlet of the negative pressure fan. A one-way solenoid valve is installed inside the air delivery pipe.

[0009] The sealing cap integrates a feeding assembly and a stirring assembly. The feeding hopper is connected to the feeding pipe through a transition pipe. A negative pressure fan establishes a vacuum environment through an air supply pipe. The material enters the transition pipe through the feeding hopper. At this time, the solenoid valve is closed, and the solenoid valve of the feeding pipe is opened, allowing the material to fall into the reactor. Then, the solenoid valve of the feeding pipe is closed, and the suction force generated by the negative pressure fan is used to create a vacuum inside the transition pipe. The one-way solenoid valve of the air inlet pipe prevents gas backflow, achieving feeding in a closed environment and preventing harmful gases from flowing out during feeding.

[0010] Furthermore, the feeding assembly also includes an air storage tank, a pressure relief pipe, a pressure detector, and a second air supply pipe. The air storage tank is installed on the upper end of the sealing cover. One end of the second air supply pipe is connected to the air storage tank, and the other end of the second air supply pipe is connected to the air inlet of the negative pressure fan. The upper end of the sealing cover is connected to one end of the pressure relief pipe, and the air inlet of the pressure relief pipe is connected to one end of the air storage tank. A one-way solenoid valve is installed inside the pressure relief pipe and the second air supply pipe. A pressure detector is installed on the upper end of the sealing cover, and the probe of the pressure detector is at the lower end of the sealing cover.

[0011] The gas storage tank is linked to the negative pressure fan through the second gas supply pipe. The pressure relief pipe, together with the gas pressure detector, monitors the pressure inside the reactor. When the gas pressure in the reactor exceeds the limit, the pressure relief pipe opens automatically. The gas storage tank stores the gas. When the gas pressure inside the reactor decreases, the internal gas is input into the reaction device through the negative pressure fan.

[0012] Furthermore, the stirring assembly includes a motor, a stirring rod, a spiral stirring blade, a snap-fit ​​plate, and a scraper. The motor is fixedly connected to the upper center of the sealing cover, the stirring rod is rotatably connected to the inner center of the sealing cover, the spiral stirring blade is installed on the lower outer side of the stirring rod, and two snap-fit ​​plates are fixedly connected to the upper left and right ends of the outer side of the stirring rod. A scraper is snapped into the inner side of the snap-fit ​​plate.

[0013] The motor drives the stirring rod to rotate the spiral stirring blade. The snap-fit ​​plate fixes the detachable scraper and spiral blade to generate vortex to enhance the mixing effect. The scraper removes the deposits on the vessel wall. The modular scraper is easy to replace. The snap-fit ​​structure ensures that the scraper fits tightly to the vessel wall to prevent precious metal residue.

[0014] Furthermore, the heating reactor assembly includes a reactor, a heating ring, a conical groove, a mounting ring, a separation frame, a discharge pipe, and a sealing groove. The lower end of the sealing cover has a sealing groove, and a sealing gasket is installed inside the sealing groove. The heating ring is fixedly connected to the lower inner part of the reactor. The lower inner part of the reactor has a conical groove. The lower end of the reactor has a discharge pipe installed. A solenoid valve is installed inside the discharge pipe. The upper inner part of the reactor has a mounting ring fixedly connected. The inner side of the mounting ring is fixedly connected to the separation frame by bolts. The sealing groove is slidably connected to the upper end of the reactor.

[0015] The heating ring heats the reaction solution, the separation frame is fixed by the mounting ring, the sealing groove ensures the sealing of the cover, the conical groove guides the sediment to gather, the separation frame intercepts undissolved particles, the solenoid valve controls the discharge pipe, the conical structure accelerates solid-liquid separation, and the bolt-fixed separation frame facilitates cleaning and maintenance.

[0016] Furthermore, the heating reactor assembly also includes a stainless steel shell, an acid-resistant ceramic fiber layer, and a zirconium alloy liner. The inner side of the reactor is provided with a stainless steel shell, the inner side of the stainless steel shell is provided with an acid-resistant ceramic fiber layer, and the inner side of the acid-resistant ceramic fiber layer is provided with a zirconium alloy liner.

[0017] The zirconium alloy inner lining serves as the direct contact layer, the acid-resistant ceramic fiber layer provides thermal insulation, the stainless steel shell bears the load, the zirconium alloy resists strong acid corrosion, the ceramic fiber reduces heat loss, the three-layer structure provides synergistic protection, the zirconium alloy's resistance to aqua regia corrosion extends the equipment's lifespan, and the layered design balances strength and insulation.

[0018] Furthermore, it also includes support legs. Three support legs are installed at the lower end of the reactor, and anti-slip pads are installed at the lower end of the support legs.

[0019] The three-legged support is arranged in an equilateral triangle, the anti-slip pad increases friction, the three-point support principle ensures the stability of the equipment, and the rubber anti-slip pad adapts to uneven ground.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This precious metal waste dissolving reactor has the following advantages:

[0021] 1. In this precious metal waste dissolving reactor, the material enters the transition pipe through the feed hopper. At this time, the solenoid valve is closed, and the feed pipe solenoid valve is opened, allowing the material to fall into the reactor. Then, the feed pipe solenoid valve is closed, and the negative pressure fan generates suction to create a vacuum inside the transition pipe. The one-way solenoid valve of the air inlet pipe prevents gas backflow, achieving feeding in a closed environment and preventing harmful gases from flowing out during feeding.

[0022] 2. This precious metal waste dissolving reactor uses a motor-driven stirring rod to rotate a spiral stirring blade. A snap-fit ​​plate secures the detachable scraper, and the spiral blade generates vortexes to enhance the mixing effect. The scraper removes deposits from the reactor wall. The modular scraper is easy to replace, and the snap-fit ​​structure ensures that the scraper fits tightly against the reactor wall to prevent precious metal residue. It can effectively clean the precious metal deposits on the inner wall of the reactor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the lower structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0026] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0027] In the diagram: 1. Sealing cap, 2. Support leg, 3. Feeding assembly, 31. Feed pipe, 32. Transition pipe, 33. Feed hopper, 34. Gas supply pipe one, 35. Negative pressure fan, 36. Air inlet pipe, 37. Gas storage tank, 38. Pressure relief pipe, 39. Gas pressure detector, 310. Gas supply pipe two, 4. Stirring assembly, 41. Motor, 42. Stirring rod, 43. Spiral stirring blade, 44. Clip plate, 45. Scraper, 5. Heating reactor assembly, 51. Reactor, 52. Heating ring, 53. Conical groove, 54. Mounting ring, 55. Separation frame, 56. Discharge pipe, 57. Sealing groove, 58. Stainless steel shell, 59. Acid-resistant ceramic fiber layer, 510. Zirconium alloy inner lining layer. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-4 This embodiment provides a technical solution: a precious metal waste dissolving reactor, including a sealing cover 1, a feeding assembly 3, a stirring assembly 4, and a heating reactor assembly 5;

[0030] Sealing cover 1: The upper end is equipped with feeding component 3, stirring component 4 and heating reaction vessel component 5;

[0031] Feeding assembly 3 includes a feed pipe 31, a transition pipe 32, a feed hopper 33, an air supply pipe 34, a negative pressure fan 35, and an air inlet pipe 36. The upper end of the sealing cover 1 is eccentrically connected to one end of the feed pipe 31. The upper end of the feed pipe 31 is fixedly connected to the transition pipe 32. The upper end of the transition pipe 32 is fixedly connected to the feed hopper 33. Solenoid valves are installed inside the feed pipe 31 and the feed hopper 33. The upper end of the sealing cover 1 is connected to the air inlet pipe 36. A one-way solenoid valve is installed inside the air inlet pipe 36. The upper end of the air inlet pipe 36 is fixedly connected to the air outlet of the negative pressure fan 35. One end of the air supply pipe 34 is connected to the transition pipe 32. The other end of the air supply pipe 34 is connected to the air inlet of the negative pressure fan 35. A one-way solenoid valve is installed inside the air supply pipe 34.

[0032] The sealing cover 1 integrates the feeding component 3 and the stirring component 4. The feeding hopper 33 is connected to the feeding pipe 31 through the transition pipe 32. The negative pressure fan 35 establishes a vacuum environment through the air supply pipe 34. The material enters the transition pipe 32 through the feeding hopper 33. At this time, the solenoid valve is closed and the solenoid valve of the feeding pipe 31 is opened, and the material falls into the reactor. Then the solenoid valve of the feeding pipe 31 is closed. The negative pressure fan 35 generates suction to evacuate the inside of the transition pipe 32 into a vacuum. The one-way solenoid valve of the air inlet pipe 36 prevents gas backflow, realizing feeding in a closed environment and preventing harmful gases inside from flowing out during feeding.

[0033] The feeding assembly 3 also includes an air storage tank 37, a pressure relief pipe 38, a pressure detector 39, and a second air supply pipe 310. The air storage tank 37 is installed on the upper end of the sealing cover 1. One end of the second air supply pipe 310 is connected to the air storage tank 37, and the other end of the second air supply pipe 310 is connected to the air inlet of the negative pressure fan 35. The upper end of the sealing cover 1 is connected to one end of the pressure relief pipe 38, and the air inlet of the pressure relief pipe 38 is connected to one end of the air storage tank 37. A one-way solenoid valve is installed on the inner side of the pressure relief pipe 38 and the second air supply pipe 310. The pressure detector 39 is installed on the upper end of the sealing cover 1, and the probe of the pressure detector 39 is at the lower end of the sealing cover 1.

[0034] The gas storage tank 37 is linked to the negative pressure fan 35 through the gas supply pipe 310. The pressure relief pipe 38 works with the pressure detector 39 to monitor the pressure inside the reactor. When the pressure inside the reactor exceeds the limit, the pressure relief pipe opens automatically. The gas storage tank stores the gas. When the pressure inside the reactor decreases, the internal gas is input into the reaction device through the negative pressure fan 35.

[0035] The stirring assembly 4 includes a motor 41, a stirring rod 42, a spiral stirring blade 43, a snap-fit ​​plate 44, and a scraper 45. The motor 41 is fixedly connected to the upper middle part of the sealing cover 1. The stirring rod 42 is rotatably connected to the inner middle part of the sealing cover 1. The spiral stirring blade 43 is installed on the lower outer part of the stirring rod 42. Two snap-fit ​​plates 44 are fixedly connected to the upper left and right ends of the outer part of the stirring rod 42. The scraper 45 is snapped into the inner side of the snap-fit ​​plate 44.

[0036] Motor 41 drives stirring rod 42 to rotate spiral stirring blade 43. Clip plate 44 fixes detachable scraper 45. Spiral blade generates vortex to enhance mixing effect. Scraper removes the deposits on the vessel wall. Modular scraper is easy to replace. Clip structure ensures that scraper fits tightly with vessel wall to prevent precious metal residue.

[0037] The heating reactor assembly 5 includes a reactor 51, a heating ring 52, a conical groove 53, a mounting ring 54, a separation frame 55, a discharge pipe 56, and a sealing groove 57. The lower end of the sealing cover 1 has a sealing groove 57, and a sealing gasket is installed inside the sealing groove 57. The heating ring 52 is fixedly connected to the lower inner side of the reactor 51. The conical groove 53 is opened at the lower inner side of the reactor 51. The discharge pipe 56 is installed at the lower end of the reactor 51. A solenoid valve is installed inside the discharge pipe 56. The mounting ring 54 is fixedly connected to the upper inner side of the reactor 51. The separation frame 55 is fixedly connected to the inner side of the mounting ring 54 by bolts. The sealing groove 57 is slidably connected to the upper end of the reactor 51.

[0038] Heating ring 52 heats the reaction solution, separation frame 55 is fixed by mounting ring 54, sealing groove 57 ensures the sealing of the cover, conical groove guides the sediment to gather, separation frame intercepts undissolved particles, solenoid valve controls discharge pipe 56, conical structure accelerates solid-liquid separation, bolt fixing of separation frame facilitates cleaning and maintenance.

[0039] The heating reactor assembly 5 also includes a stainless steel shell 58, an acid-resistant ceramic fiber layer 59, and a zirconium alloy liner 510. The stainless steel shell 58 is disposed inside the reactor 51, the acid-resistant ceramic fiber layer 59 is disposed inside the stainless steel shell 58, and the zirconium alloy liner 510 is disposed inside the acid-resistant ceramic fiber layer 59.

[0040] The zirconium alloy inner lining layer 510 serves as the direct contact layer, the acid-resistant ceramic fiber layer 59 provides thermal insulation, the stainless steel shell 58 bears the load, the zirconium alloy resists strong acid corrosion, the ceramic fiber reduces heat loss, the three-layer structure provides synergistic protection, the zirconium alloy's resistance to aqua regia corrosion extends the equipment's lifespan, and the layered design balances strength and insulation.

[0041] It also includes support legs 2. Three support legs 2 are installed at the lower end of the reactor 51, and anti-slip pads are installed at the lower end of the support legs 2.

[0042] The three-legged support legs are arranged in an equilateral triangle. The anti-slip pads increase friction, and the three-point support principle ensures the stability of the equipment. The rubber anti-slip pads adapt to uneven ground.

[0043] The working principle of the precious metal waste dissolving reactor provided by this utility model is as follows: First, the operator uses the support leg 2 to stably place the reactor 51 of the heating reactor assembly 5, ensuring that the sealing groove 57 of the sealing cover 1 is aligned with the upper end of the reactor 51 and pressed tightly to seal. When adding material, the solenoid valve of the feed hopper 33 is opened to allow the material to enter the transition pipe 32. After closing this valve, the solenoid valve of the feed pipe 31 is opened to allow the material to fall into the reactor. Then, the feed pipe 31 valve is closed, and the negative pressure fan 35 is started to evacuate the residual gas in the transition pipe 32 through the gas delivery pipe 34. The single air inlet pipe 36... The valve prevents gas backflow, the pressure detector 39 monitors the pressure inside the vessel in real time, and when the pressure is over-pressurized, the pressure relief pipe 38 automatically releases the pressure through the gas storage tank 37. When the pressure is under-pressurized, the gas is replenished through the gas supply pipe 310. The motor 41 is started to drive the stirring rod 42 to drive the spiral stirring blade 43 and the clamped scraper 45 to rotate the mixture and remove the residue from the vessel wall. The heating ring 52 heats the material inside the zirconium alloy liner 510, and the acid-resistant ceramic fiber layer 59 keeps it warm. After the reaction is completed, the separation frame 55 intercepts undissolved particles, and the discharge pipe 56 is opened. The solenoid valve guides the product out through the conical groove 53.

[0044] It is worth noting that, in the above embodiments, the input terminals of the negative pressure fan 35, motor 41 and heating ring 52 are electrically connected to the output terminal of an external power supply through an external PLC controller, the output terminal of the air pressure detector 39 is electrically connected to the external PLC controller, the motor 41 is a servo motor, and the external PLC controller controls the operation of the negative pressure fan 35, motor 41 and heating ring 52 using methods commonly used in the prior art.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A precious metal waste dissolving reactor, characterized in that: It includes a sealing cap (1), a feeding assembly (3), a stirring assembly (4), and a heating reactor assembly (5); Sealing cap (1): The upper end is equipped with a feeding assembly (3), a stirring assembly (4) and a heating reactor assembly (5); Feeding assembly (3): includes a feed pipe (31), a transition pipe (32), a feed hopper (33), an air supply pipe (34), a negative pressure fan (35), and an air inlet pipe (36). The upper eccentric position of the sealing cover (1) is connected to one end of the feed pipe (31). The upper end of the feed pipe (31) is fixedly connected to the transition pipe (32), and the upper end of the transition pipe (32) is fixedly connected to the feed hopper (33). The feed pipe (31) and the feed hopper (33) are connected... An electromagnetic valve is provided on the inner side. The upper end of the sealing cover (1) is connected to the air inlet pipe (36). A one-way electromagnetic valve is installed on the inner side of the air inlet pipe (36). The upper end of the air inlet pipe (36) is fixedly connected to the air outlet of the negative pressure fan (35). One end of the first air supply pipe (34) is connected to the transition pipe (32). The other end of the first air supply pipe (34) is connected to the air inlet of the negative pressure fan (35). A one-way electromagnetic valve is installed on the inner side of the first air supply pipe (34).

2. The precious metal waste dissolving reactor according to claim 1, characterized in that: The feeding assembly (3) also includes an air storage tank (37), a pressure relief pipe (38), a pressure detector (39), and a second air supply pipe (310). The upper end of the sealing cover (1) is equipped with the air storage tank (37). One end of the second air supply pipe (310) is connected to the air storage tank (37), and the other end of the second air supply pipe (310) is connected to the air inlet of the negative pressure fan (35). The upper end of the sealing cover (1) is connected to one end of the pressure relief pipe (38), and the air inlet of the pressure relief pipe (38) is connected to one end of the air storage tank (37). A one-way solenoid valve is installed on the inner side of the pressure relief pipe (38) and the second air supply pipe (310). The upper end of the sealing cover (1) is equipped with a pressure detector (39), and the probe of the pressure detector (39) is at the lower end of the sealing cover (1).

3. The precious metal waste dissolving reactor according to claim 1, characterized in that: The stirring assembly (4) includes a motor (41), a stirring rod (42), a spiral stirring blade (43), a snap-fit ​​plate (44), and a scraper (45). The motor (41) is fixedly connected to the upper middle part of the sealing cover (1). The stirring rod (42) is rotatably connected to the inner middle part of the sealing cover (1). The spiral stirring blade (43) is installed on the lower outer part of the stirring rod (42). Two snap-fit ​​plates (44) are fixedly connected to the upper left and right ends of the outer part of the stirring rod (42). The scraper (45) is snapped into the inner side of the snap-fit ​​plate (44).

4. The precious metal waste dissolving reactor according to claim 1, characterized in that: The heating reactor assembly (5) includes a reactor (51), a heating ring (52), a conical groove (53), a mounting ring (54), a separation frame (55), a discharge pipe (56), and a sealing groove (57). The lower end of the sealing cover (1) is provided with a sealing groove (57). A sealing gasket is installed on the inner side of the sealing groove (57). The lower inner side of the reactor (51) is fixedly connected to the heating ring (52). The lower inner side of the reactor (51) is provided with a conical groove (53). The lower end of the reactor (51) is provided with a discharge pipe (56). A solenoid valve is provided on the inner side of the discharge pipe (56). The upper inner side of the reactor (51) is fixedly connected to the mounting ring (54). The inner side of the mounting ring (54) is fixedly connected to the separation frame (55) by bolts. The sealing groove (57) is slidably connected to the upper end of the reactor (51).

5. The precious metal waste dissolving reactor according to claim 4, characterized in that: The heating reactor assembly (5) further includes a stainless steel shell (58), an acid-resistant ceramic fiber layer (59), and a zirconium alloy liner (510). The inner side of the reactor (51) is provided with a stainless steel shell (58), the inner side of the stainless steel shell (58) is provided with an acid-resistant ceramic fiber layer (59), and the inner side of the acid-resistant ceramic fiber layer (59) is provided with a zirconium alloy liner (510).

6. The precious metal waste dissolving reactor according to claim 4, characterized in that: It also includes support legs (2), and the lower end of the reactor (51) is equipped with three support legs (2), and the lower end of the support legs (2) is equipped with anti-slip pads.

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