Silver etching waste liquid resource recycling device

Abstract

The utility model discloses a silver etching waste liquid resource recycling device, which relates to the technical field of hazardous waste treatment, and comprises a mixing barrel, the top of the mixing barrel is provided with a barrel cover, both sides of the top of the barrel cover are provided with sliding chutes, the sliding chutes are internally provided with sliding rods in a sliding manner, one side of each sliding rod is fixedly connected with a vertical rod, and the vertical rod is fixedly connected with the bottom of the mixing barrel. A lifting seat sleeves the exterior of the vertical rod in an up-down sliding manner, one end of the lifting seat is fixedly connected with a metal ball, a stirring rod is rotatably mounted in the barrel cover, and a beating mechanism which rotates along with the stirring rod to drive the two metal balls to beat the mixing barrel is further arranged on the barrel cover. According to the utility model, the metal balls can be driven to continuously beat the mixing barrel along with the mixing work of the stirring rod on silver chloride and iron powder, and the iron powder attached to the inner wall of the mixing barrel is knocked off, so that the iron powder fully participates in reduction reaction to obtain crude silver, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hazardous waste treatment, in particular to a resource recovery device for silver etching waste liquid. Background Technique

[0002] The etching liquid contains a relatively large amount of precious metal silver. The resource recovery device for silver-containing etching waste liquid is mainly used to extract and recover silver from the etching waste liquid. The existing recovery devices usually adopt the chemical precipitation method. First, an appropriate amount of chemical reagent is added to the etching waste liquid to generate silver chloride precipitate, and then solid-liquid separation is carried out by centrifugation. The generated silver chloride solid precipitate can be reduced with iron powder to obtain crude silver. The crude silver is washed, subjected to high-temperature impurity removal and ingot casting, and finally further purified by electrolysis. At present, when the silver chloride solid precipitate is reduced with iron powder, the two need to be added to a mixing barrel for stirring so that the iron powder evenly covers the silver chloride. However, during the stirring process, part of the iron powder adheres to the inner wall of the mixing barrel, resulting in the iron powder not fully participating in the reduction reaction, affecting the uniformity and speed of the reaction, and also increasing the difficulty of cleaning the mixing barrel subsequently. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a resource recovery device for silver etching waste liquid, which solves the technical problem that part of the iron powder adheres to the inner wall of the mixing barrel during the reduction reaction of silver chloride, resulting in the iron powder not fully participating in the reduction reaction.

[0004] To solve the above technical problems, the utility model provides the following technical solutions: A resource recovery device for silver etching waste liquid includes a mixing barrel. A barrel cover is installed at the top of the mixing barrel. Sliding grooves are opened on both sides of the top of the barrel cover. Slide bars are slidably installed inside the sliding grooves. A vertical rod is fixedly connected to one side of the slide bar. A lifting seat is slidably sleeved up and down outside the vertical rod. A metal ball is fixedly connected to one end of the lifting seat. A stirring rod is rotatably installed inside the barrel cover, and a knocking mechanism is further arranged on the barrel cover to drive the two metal balls to knock on the mixing barrel as the stirring rod rotates. An elevating mechanism is arranged on the vertical rod to drive the metal ball to slide up and down.

[0005] Further, the knocking mechanism includes a gear fixedly sleeved on the upper end of the stirring rod. There are two symmetrically distributed tooth sections on the gear. A tooth plate meshing with the gear is slidably installed inside the sliding groove. The end of the tooth plate is fixedly installed on the slide bar. A telescopic spring is fixedly connected to the side of the slide bar away from the tooth plate. The end of the telescopic spring is fixedly installed on the inner wall of the sliding groove.

[0006] Further, a bracket is fixedly installed at the top of the barrel cover. A servo motor I is fixedly installed at the bottom of the bracket. The output end of the servo motor I is fixedly connected to the center of the stirring rod.

[0007] Further, the lifting mechanism includes two support plates respectively fixedly installed at the top and bottom of the vertical rod. A second servo motor is fixedly installed at the top of one of the support plates. The output end of the second servo motor is fixedly connected to a lead screw, and one end of the lifting seat is threadedly sleeved outside the lead screw.

[0008] Further, a plurality of stirring blades are longitudinally and equidistantly distributed on the outside of the stirring rod.

[0009] Further, a feed port for adding iron powder into the mixing barrel is provided on one side of the top of the barrel cover.

[0010] By means of the above technical solution, the utility model provides a silver etching waste liquid resource recovery device, which at least has the following beneficial effects:

[0011] 1. By setting the knocking mechanism, the utility model can drive the metal ball to continuously knock the mixing barrel while the stirring rod stirs and mixes silver chloride and iron powder, and can continuously knock down the iron powder adhering to the inner wall of the mixing barrel, so that the iron powder fully participates in the reduction reaction to obtain crude silver, thereby improving the reaction efficiency.

[0012] 2. By setting the lifting mechanism, the utility model can drive the metal ball to slide up and down, so as to continuously change the position of the metal ball during the process of knocking the mixing barrel. This can not only avoid applying too large an impact force to the mixing barrel at the same position for a long time to prevent the mixing barrel from deforming, but also gradually cover the knocking force to different areas of the mixing barrel, which is more conducive to the dropping of iron powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of a partial structure of the utility model;

[0016] Figure 3 is a schematic diagram of another partial structure of the utility model;

[0017] Figure 4 is a schematic diagram of the structure of the lifting mechanism of the utility model.

[0018] In the figure: 1, mixing barrel; 2, barrel cover; 3, chute; 4, sliding rod; 5, vertical rod; 6, lifting seat; 7, metal ball; 8, lifting mechanism; 81, support plate; 82, servo motor II; 83, lead screw; 9, knocking mechanism; 91, gear; 92, toothed plate; 93, telescopic spring; 94, bracket; 95, servo motor I; 10, stirring rod; 11, stirring blade; 12, feed inlet. Specific implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] When the existing recovery device reduces silver chloride solid precipitate with iron powder, it is necessary to add the two to the mixing barrel for stirring so that the iron powder evenly covers the silver chloride. However, during the stirring process, some iron powder will adhere to the inner wall of the mixing barrel, resulting in the iron powder not fully participating in the reduction reaction, affecting the uniformity and speed of the reaction, and also increasing the difficulty of cleaning the mixing barrel subsequently.

[0021] To solve the defects existing in the above recovery device during the reduction reaction of silver chloride, please refer to Figures 1 - 4, a silver etching waste liquid resource recovery device provided by the utility model can continuously knock down the iron powder adhering to the inner wall of the mixing barrel 1 as the reduction reaction proceeds, so that the iron powder can fully react with silver chloride. The recovery device is based on a mixing barrel 1, and a barrel cover 2 is installed at the top of the mixing barrel 1. Chute grooves 3 are opened on both sides of the top of the barrel cover 2. A sliding rod 4 is slidably installed inside the chute grooves 3. One side of the sliding rod 4 is fixedly connected with a vertical rod 5. The vertical rod 5 is arranged in an L shape. A lifting seat 6 is slidably sleeved on the outside of the vertical rod 5 up and down. One end of the lifting seat 6 is fixedly connected with a metal ball 7. A stirring rod 10 is rotatably installed inside the barrel cover 2. A plurality of stirring blades 11 are longitudinally and equidistantly distributed on the outside of the stirring rod 10. The silver chloride precipitate obtained from the silver etching solution is put into the mixing barrel 1. A feed port 12 for adding iron powder into the mixing barrel 1 is arranged on one side of the top of the barrel cover 2. Appropriate iron powder is added into the mixing barrel 1 through the feed port 12. When the stirring rod 10 rotates, it can drive the stirring blades 11 to stir and mix the silver chloride and iron powder in the mixing barrel 1, so that the two undergo a reduction reaction to generate crude silver. Moreover, a knocking mechanism 9 is arranged on the barrel cover 2 to drive the two metal balls 7 to knock on the mixing barrel 1 as the stirring rod 10 rotates. The metal ball 7 knocking on the mixing barrel 1 can drive the inner wall of the mixing barrel 1 to vibrate, so that the iron powder drops. As the stirring rod 10 mixes the silver chloride and iron powder, the metal ball 7 can continuously knock down the iron powder adhering to the inner wall of the mixing barrel 1, so that the iron powder fully participates in the reduction reaction and improves the reaction efficiency.

[0022] To achieve the above effects of the knocking mechanism 9, a gear 91 fixedly sleeved on the upper end of the stirring rod 10 is provided. There are two symmetrically distributed tooth rows on the gear 91. A toothed plate 92 meshing with the gear 91 is slidably installed inside the chute groove 3. The end of the toothed plate 92 is fixedly installed on the sliding rod 4. A telescopic spring 93 is fixedly connected to the side of the sliding rod 4 away from the toothed plate 92. The end of the telescopic spring 93 is fixedly installed on the inner wall of the chute groove 3. A support 94 is fixedly installed on the top of the barrel cover 2. A servo motor 95 is fixedly installed at the bottom of the support 94. The output end of the servo motor 95 is fixedly connected to the center of the stirring rod 10. The support 94 is used to provide support for the servo motor 95. Figure 1The middle metal ball 7 is in contact with the outer wall of the mixing barrel 1. The driving servo motor 95 can drive the stirring rod 10 to rotate. When the stirring rod 10 rotates, the gear 91 rotates synchronously. When the gear 91 rotates to the teeth meshing with the toothed plate 92, it can drive the toothed plate 92 to slide along the chute 3. At this time, the telescopic spring 93 deforms, and at the same time, the toothed plate 92 pushes the sliding rod 4 to slide. The sliding rod 4 pushes the vertical rod 5 to drive the metal ball 7 to separate from the mixing barrel 1. The gear 91 continues to rotate until the teeth are separated from the toothed plate 92. The sliding rod 4 can slide back and reset through the elastic force of the chute 3. The sliding rod 4 drives the vertical rod 5 to reset. The vertical rod 5 can knock on the inner wall of the mixing barrel 1, and the two metal balls 7 can knock on the metal ball 7 synchronously from both sides of the mixing barrel 1, which can make the mixing barrel 1 generate uniform vibration and impact force, and help to break the adhesion between the iron powder and the inner wall of the mixing barrel 1.

[0023] If the metal ball 7 keeps knocking on the same position of the mixing barrel 1 for a long time, it is easy to cause the mixing barrel 1 to deform. In order to avoid applying too large an impact force on the same position of the mixing barrel 1 for a long time, a lifting mechanism 8 for driving the metal ball 7 to slide up and down is provided on the vertical rod 5, which includes two support plates 81 fixedly installed at the top and bottom of the vertical rod 5. A servo motor 82 is fixedly installed at the top of one of the support plates 81. The output end of the servo motor 82 is fixedly connected with a lead screw 83. The lead screw 83 is rotatably installed between the two support plates 81. One end of the lifting seat 6 is threadedly sleeved outside the lead screw 83. Driving the servo motor 82 can drive the lead screw 83 to rotate. Since the lifting seat 6 is slidably connected with the vertical rod 5, the rotation of the lead screw 83 can make the lifting seat 6 slide up and down, so as to drive the metal ball 7 to slide up and down, so that the metal ball 7 can continuously change its position during the process of knocking on the mixing barrel 1. This can not only prevent the mixing barrel 1 from being damaged, but also gradually cover the knocking force to different areas of the mixing barrel 1, which helps the iron powder to fall off.

[0024] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art, and the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0025] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A silver etching waste liquid resource recovery device, comprising a mixing barrel (1), characterized in that: A barrel cover (2) is installed on the top of the mixing barrel (1). Slide grooves (3) are provided on both sides of the top of the barrel cover (2). A slide rod (4) is slidably installed inside the slide groove (3). A vertical rod (5) is fixedly connected to one side of the slide rod (4). A lifting seat (6) is provided on the outside of the vertical rod (5) for sliding up and down. A metal ball (7) is fixedly connected to one end of the lifting seat (6). A stirring rod (10) is rotatably installed inside the barrel cover (2). The barrel cover (2) is also provided with a knocking mechanism (9) for driving two metal balls (7) to knock the mixing barrel (1) as the stirring rod (10) rotates. A lifting mechanism (8) for driving the metal balls (7) to slide up and down is provided on the vertical rod (5).

2. The silver etching waste liquid resource recovery device according to claim 1, characterized in that: The knocking mechanism (9) comprises a gear (91) fixedly mounted on the upper end of the stirring rod (10), the gear (91) being provided with two sections of symmetrically distributed teeth, a tooth plate (92) meshing with the gear (91) being slidably mounted inside the slide groove (3), the end of the tooth plate (92) being fixedly mounted on the slide rod (4), a telescopic spring (93) being fixedly connected to the side of the slide rod (4) away from the tooth plate (92), the end of the telescopic spring (93) being fixedly mounted on the inner wall of the slide groove (3).

3. The silver etching waste liquid resource recovery device according to claim 2, characterized in that: A bracket (94) is fixedly mounted on the top of the barrel cover (2), a servo motor (95) is fixedly mounted on the bottom of the bracket (94), and an output end of the servo motor (95) is fixedly connected to the center of the stirring rod (10).

4. The silver etching waste liquid resource recovery device according to claim 1, characterized in that: The lifting mechanism (8) comprises two support plates (81) respectively fixedly mounted on the top and bottom of the vertical rod (5), a servo motor 2 (82) being fixedly mounted on the top of one of the support plates (81), a screw rod (83) being fixedly connected to the output end of the servo motor 2 (82), and one end of the lifting seat (6) being threadedly sleeved on the outside of the screw rod (83).

5. The silver etching waste liquid resource recovery device according to claim 1, characterized in that: The outside of the stirring rod (10) is provided with a plurality of stirring blades (11) which are equidistantly distributed in the longitudinal direction.

6. The silver etching waste liquid resource recovery device according to claim 1, characterized in that: A feeding port (12) for adding iron powder into the mixing barrel (1) is provided on one side of the top of the barrel cover (2).

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