A washing device for precious metals

Abstract

A washing device for precious metals, wherein the washing device is injected with cleaning liquid and is used for washing the surface of the precious metals, and is characterized in that the washing device comprises: a base, in which the cleaning liquid is stored; a cleaning tank; a bracket; a shell, in which a first sprocket, a second sprocket and a chain are arranged; a stirring mechanism, comprising a motor and a stirrer, in which a pipeline is arranged; a liquid injection mechanism, connected to the pipeline of the stirring mechanism, comprising a centrifugal pump, a suction pipe and a discharge pipe; the centrifugal pump drives the suction pipe to absorb the cleaning liquid in the base, and transports the cleaning liquid to the stirrer through the discharge pipe, and the cleaning liquid enters the cleaning tank evenly through the pipeline of the stirrer. The liquid injection mechanism is connected to the pipeline of the stirring mechanism, and the cleaning liquid is stored in the base, so that the space utilization rate of the washing device is improved, and the method of using the stirrer to evenly inject the cleaning liquid into the cleaning tank makes the surface of the precious metal and the cleaning liquid contact evenly, thereby optimizing the cleaning effect of the washing device.

Description

Technical Field

[0001] The utility model relates to the field of precious metal processing, and in particular to a precious metal washing device. Background Art

[0002] The precious metals market is growing as precious metals are widely used in electronics, jewelry, industry, and investment. For producers, it is crucial to ensure the quality and purity of precious metal products, so efficient and reliable washing equipment is needed to clean and process precious metal materials.

[0003] A stirring cleaning device is a way to achieve precious metal washing. The stirring cleaning device adds detergent to the cleaning tank and uses a stirring rod to stir the cleaning liquid in the cleaning tank so that the cleaning liquid flows in the cleaning tank and fully contacts the surface of the precious metal in the cleaning tank to remove dirt and impurities on the surface of the precious metal. At present, there are two types of ways to inject cleaning liquid into the cleaning tank in the stirring cleaning device: manual injection and machine injection. The stirring cleaning device that manually injects cleaning liquid easily causes uneven distribution of the cleaning liquid in the cleaning tank, and cannot control the injection amount and speed of the cleaning liquid, resulting in unsatisfactory cleaning effect. The stirring cleaning device that machine-injects cleaning liquid often has an additional injection system, and the injection pipes and other equipment in the injection system will take up a lot of space, which increases the requirements for the installation space of the stirring cleaning device.

[0004] Therefore, it is necessary to provide a precious metal washing device with good cleaning effect and high space utilization. Utility Model Content

[0005] The utility model aims to provide a precious metal washing device with good washing effect and high space utilization rate.

[0006] According to one aspect of the utility model, a washing device for precious metals is provided, wherein a cleaning liquid is injected into the washing device for washing the surface of the precious metals, and the washing device comprises:

[0007] A base is disposed on the ground, the base is hollow, and the cleaning liquid is stored in the base;

[0008] A cleaning tank, disposed on the base;

[0009] A bracket, fixed on the base;

[0010] A housing, fixedly connected to the bracket, wherein a first sprocket, a second sprocket and a chain are arranged in the housing;

[0011] a stirring mechanism fixedly connected to the housing, the stirring mechanism comprising a motor fixedly connected to the first sprocket, and also comprising a stirrer fixedly connected to the second sprocket and located in the cleaning tank, wherein a pipeline is provided in the stirrer, wherein the chain is respectively placed on the first sprocket and the second sprocket, and the chain is respectively meshed with the first sprocket and the second sprocket;

[0012] A liquid injection mechanism connected to the stirring mechanism pipeline, comprising a centrifugal pump, the centrifugal pump having a discharge end and a suction end, and the centrifugal pump is located on a side of the bracket away from the base, and also comprises a suction pipe arranged in the bracket, and a discharge pipe connected to the discharge end;

[0013] The surface of the base on which the cleaning tank is provided is recorded as the first surface, and when viewed in a direction parallel to the first surface, the other end of the discharge pipe is connected to one end of the agitator, and one end of the agitator is fixed to the second sprocket, and one end of the suction pipe is located in the base, and the other end is connected to the suction end;

[0014] Wherein, the suction pipe absorbs the cleaning liquid in the base through the centrifugal pump, and the cleaning liquid is transported to the agitator through the discharge pipe, and the cleaning liquid evenly enters the cleaning tank through the pipeline of the agitator.

[0015] More preferably, the direction in which the motor drives the sprocket to rotate is recorded as a first direction, the chain drives the second sprocket through the first sprocket, and the second sprocket rotates along the first direction, and the agitator rotates along the first direction.

[0016] More preferably, the base comprises:

[0017] The liquid injection port is arranged on the first surface, and the cleaning liquid is injected into the base through the liquid injection port.

[0018] More preferably, the stirrer is in the shape of a circular shaft, and when viewed along a direction parallel to the first surface, the axis of the stirrer is perpendicular to the first surface.

[0019] More preferably, when observed along a direction parallel to the first surface, the discharge pipe is led out from the discharge end along a second direction, and the angle between the second direction and the first surface is denoted as R, which satisfies the relationship: 15°≤R≤30°. When the discharge pipe reaches the extension line of the agitator axis along the second direction, the discharge pipe is connected to the agitator along the agitator axis.

[0020] More preferably, the liquid injection mechanism further comprises:

[0021] Rotary joint: located between the discharge pipe and the agitator, the discharge pipe is connected to the agitator via the rotary joint.

[0022] More preferably, the inner diameter of the discharge pipe is the same as the inner diameter of the pipeline.

[0023] More preferably, the stirrer further comprises:

[0024] A stirring head is fixed on an end of the stirrer away from the second sprocket. The stirring head is driven to rotate along a first direction by the rotation of the stirrer. The stirrer stirs the cleaning liquid in the cleaning tank.

[0025] More preferably, the stirring head is provided with a porous ring, and during stirring, the cleaning liquid continuously flows in and out of the porous ring to form a vortex.

[0026] More preferably, the stirrer further comprises:

[0027] Liquid level monitor: It is arranged on the surface of the agitator in a ring shape. The liquid level monitor is electrically connected to the centrifugal pump. When observed in a direction parallel to the first surface, when the cleaning liquid is higher than the liquid level monitor, the centrifugal pump is powered off through the signal sent by the liquid level monitor and stops extracting the cleaning liquid.

[0028] The utility model has the following beneficial effects:

[0029] The liquid injection mechanism is connected to the stirring mechanism pipeline, and the cleaning liquid is stored in the base, which improves the space utilization rate of the washing device. The cleaning liquid is evenly injected into the cleaning tank by an agitator, so that the surface of the precious metal and the cleaning liquid are evenly contacted, thereby optimizing the cleaning effect of the washing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of a washing device according to one embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the planar structure of a washing device according to one embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the planar structure of the washing device after the washing tank is split according to one embodiment of the utility model;

[0034] Figure 4 It is a three-dimensional structural schematic diagram of the stirring mechanism described in the washing device described in one embodiment of the utility model;

[0035] Figure 5 It is a schematic diagram of the planar structure of the liquid injection mechanism in the washing device according to one embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the agitator in the washing device according to one embodiment of the utility model;

[0037] Description of the accompanying drawings: 700, washing device; 10, base; 11, liquid filling port; 20, cleaning tank; 30, bracket; 40, shell; 41, first sprocket; 42, second sprocket; 43, chain; 50, stirring mechanism; 51, motor; 52, stirrer; 521, pipeline; 522, stirring head; 523, liquid level monitor; 60, liquid filling mechanism; 61, centrifugal pump; 611, discharge end; 612, suction end; 62, suction pipe; 63, discharge pipe; 64, rotary joint; S1, first surface; F1, first direction; F2, second direction; DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Please refer to Figure 1 - Figure 6An embodiment of the utility model provides a precious metal washing device 700, wherein the washing device 700 is injected with a cleaning liquid for washing the surface of the precious metal. The washing device 700 includes: a base 10, a cleaning tank 20, a bracket 30, a shell 40, a stirring mechanism 50 and a liquid injection mechanism 60.

[0042] The base 10 is arranged on the ground, the base 10 is hollow, and the cleaning liquid is stored in the base 10. The cleaning tank 20 is arranged on the base 10. The bracket 30 is fixed on the base 10. The housing 40 is fixedly connected to the bracket 30, and a first sprocket 41, a second sprocket 42 and a chain 43 are arranged in the housing 40. The stirring mechanism 50 is fixedly connected to the housing 40, and the stirring mechanism 50 includes a motor 51 fixedly connected to the first sprocket 41, and the stirring mechanism 50 also includes an agitator 52 fixedly connected to the second sprocket 42 and located in the cleaning tank 20. A pipe 521 is arranged in the agitator 52. The chain 43 is respectively placed on the first sprocket 41 and the second sprocket 42, and the chain 43 is respectively meshed with the first sprocket 41 and the second sprocket 42. The injection mechanism 60 is connected to the pipeline 521 of the stirring mechanism 50, and the injection mechanism 60 includes a centrifugal pump 61, which is provided with a discharge end 611 and a suction end 612, and the centrifugal pump 61 is located on the side of the bracket 30 away from the base 10. The injection mechanism 60 also includes a suction pipe 62 arranged in the bracket 30, and a discharge pipe 63 connected to the discharge end 611.

[0043] The surface of the base 10 on which the cleaning tank 20 is disposed is denoted as the first surface S1. When viewed in a direction parallel to the first surface S1, the other end of the discharge pipe 63 is connected to one end of the agitator 52, and one end of the agitator 52 is fixed to the second sprocket 42. One end of the suction pipe 62 is located in the base 10, and the other end is connected to the suction end 612;

[0044] The suction pipe 62 absorbs the cleaning liquid in the base 10 through the centrifugal pump 61 , and the cleaning liquid is transported to the agitator 52 through the discharge pipe 63 , and the cleaning liquid evenly enters the cleaning tank 20 through the pipeline 521 of the agitator 52 .

[0045] Among them, the base 10 is designed as a hollow, which can store a large amount of cleaning liquid to ensure that there is enough liquid supply during the cleaning process. This design also helps to store the liquid in a relatively stable position to reduce the risk of leakage or overflow. The bracket 30 is fixed on the base 10, and the shell 40 is connected to the bracket 30. This structure is stable and reliable, can support and fix the stirring mechanism 50, and ensure its normal operation. The centrifugal pump 61 is located on the side of the bracket 30 away from the base 10, which is convenient for the absorption and transportation of the liquid. The cleaning liquid is transported to the agitator 52 through the discharge pipe 63 to ensure that the cleaning liquid can effectively flow to the surface of the precious metal. The suction pipe 62 absorbs the cleaning liquid in the base 10 through the centrifugal pump 61, and the discharge pipe 63 transports the cleaning liquid to the agitator 52. Through this connection method, the cleaning liquid can be smoothly extracted from the base 10 and transported to the cleaning tank 20, ensuring a stable supply of cleaning liquid during the stirring process.

[0046] More preferably, the direction in which the motor 51 drives the sprocket to rotate is recorded as a first direction F1, the chain 43 drives the second sprocket 42 through the first sprocket 41, and the second sprocket 42 rotates along the first direction F1, and the agitator 52 rotates along the first direction F1.

[0047] Among them, the rotation direction of the motor 51 driving the sprocket is recorded as the first direction F1, and the second sprocket 42 is ensured to rotate in the same direction, so that the consistency and coordination of the mechanical transmission system can be maintained, thereby reducing the risk of misoperation and failure in the transmission system. By ensuring that the agitator 52 rotates in the same direction as the motor 51, the consistency and stability of the stirring process can be maintained, and the precious metals can be ensured to be uniformly and fully stirred in the cleaning tank 20, thereby improving the cleaning effect. The chain 43 drives the second sprocket 42 through the first sprocket 41, and the second sprocket 42 is rotated along the first direction F1, which can reduce the friction and stress between the chain 43 and the sprocket in the transmission system, and extend the service life of the transmission system. In addition, such a design can greatly improve the utilization of space, and the transmission structure in the vertical direction is converted into a transmission structure in the horizontal direction through the chain 43 and the sprocket.

[0048] More preferably, the base 10 includes: a liquid injection port 11 . The liquid injection port 11 is disposed on the first surface S1 , and the cleaning liquid is injected into the base 10 through the liquid injection port 11 .

[0049] Among them, the injection port 11 is placed on the surface of the base 10, so that the operator can easily inject cleaning liquid into the washing device 700. Placing the injection port 11 on the surface of the base 10 can reduce the splashing and splashing caused by adding cleaning liquid, thereby improving the safety of operation. By controlling the design and position of the injection port 11, the injection amount and speed of the cleaning liquid can be better controlled, thereby ensuring that the amount of cleaning liquid used is effectively controlled and managed. The injection port 11 placed on the surface is easier to clean and maintain, making the maintenance of the equipment more convenient and efficient.

[0050] More preferably, the stirrer 52 is in the shape of a circular axis, and when viewed along a direction parallel to the first surface S1 , the axial direction of the stirrer 52 is perpendicular to the first surface S1 .

[0051] Among them, the agitator 52 is in the shape of a circular axis, and the axis direction is perpendicular to the first surface S1, which can ensure that the liquid is evenly mixed during the stirring process. This design can improve the efficiency and uniformity of stirring, and ensure that the cleaning liquid is evenly distributed in the entire cleaning tank 20. The circular axis-shaped agitator 52 is relatively stable when rotating, and is not prone to shaking or offset, thereby ensuring the stability and continuity of the stirring process. The design in which the axis is perpendicular to the first surface S1 makes the agitator 52 easier to install and operate, reducing the complexity and difficulties that may arise during installation and use. The arrangement in which the axis of the agitator 52 is perpendicular to the first surface S1 can effectively utilize space, and is particularly suitable for equipment layout in limited space, minimizing the footprint of the equipment.

[0052] More preferably, when viewed from a direction parallel to the first surface S1, the discharge pipe 63 is led out from the discharge end 611 along a second direction F2, and the angle between the second direction F2 and the first surface S1 is denoted as R, which satisfies the relationship: 15°≤R≤30°. When the discharge pipe 63 reaches the extension line of the axis of the agitator 52 along the second direction F2, the discharge pipe 63 is connected to the agitator 52 along the axis of the agitator 52.

[0053] Among them, the design angle of the discharge pipe 63 can ensure that the cleaning liquid flows evenly to the agitator 52. By adjusting the angle of the discharge pipe 63, the flow rate of the cleaning liquid can be better controlled to ensure uniform distribution and mixing of the liquid in the cleaning tank 20. It is the best way to inject the cleaning liquid downward into the agitator 52 when it reaches the agitator 52 axis directly above the agitator 52, which can improve the stirring effect and cleaning efficiency. This setting can also reduce the volatilization and splashing of the cleaning liquid, ensuring the safety and stability of the cleaning operation. The angle design of the discharge pipe 63 is affected by the principles of fluid dynamics. By adjusting the angle of the discharge pipe 63 to between 15° and 30°, the resistance and pressure loss of the liquid in the pipeline 521 can be minimized, and the efficiency and stability of the liquid flow can be improved. When the centrifugal pump 61 is powered off, this angle can ensure that the cleaning liquid is interrupted in the discharge pipe 63 and stops entering the agitator 52.

[0054] Preferably, the liquid injection mechanism 60 further includes a rotary joint 64 . The rotary joint 64 is located between the discharge pipe 63 and the stirrer 52 , and the discharge pipe 63 is connected to the stirrer 52 via the rotary joint 64 .

[0055] Among them, the rotary joint 64 can provide a connection between the discharge pipe 63 and the agitator 52 and allow relative movement between the two. This design can increase the flexibility and adjustability of the system so that the relative position between the discharge pipe 63 and the agitator 52 can be adapted to different working conditions and requirements during the operation of the device. Since the discharge pipe 63 and the agitator 52 may need to move relative to each other during operation, directly connecting them may cause distortion and wear of the pipe 521. By using the rotary joint 64, the risk of such distortion and wear can be reduced, the service life of the equipment can be extended and the maintenance requirements can be reduced. The connection point between the discharge pipe 63 and the agitator 52 is a potential leakage point. The use of the rotary joint 64 can better seal the connection and allow a certain degree of rotation during the operation of the equipment, thereby reducing the risk of leakage. The rotary joint 64 makes the connection between the discharge pipe 63 and the agitator 52 easier to maintain and replace. If the discharge pipe 63 or the agitator 52 needs to be cleaned, repaired or replaced, it can be operated more conveniently without having to disassemble the entire device.

[0056] More preferably, the inner diameter of the discharge pipe 63 is the same as the inner diameter of the pipeline 521 .

[0057] Among them, the inner diameter of the discharge pipe 63 is the same as the inner diameter of the pipeline 521, which can ensure the smooth transmission of the fluid in the pipeline 521. If the inner diameter of the discharge pipe 63 does not match the inner diameter of the pipeline 521, it may cause blockage or poor flow during fluid transmission, affecting the performance and efficiency of the equipment. When the inner diameter of the discharge pipe 63 is the same as the inner diameter of the pipeline 521, the fluid will not encounter too much resistance during the flow process, thereby reducing pressure loss. This helps to maintain the stability and consistency of fluid transmission and improve the efficiency of the system. If the inner diameter of the discharge pipe 63 is smaller than the inner diameter of the pipeline 521, it may cause the fluid to accumulate in the discharge pipe 63, increasing the risk of blockage. By keeping the inner diameter the same, this situation can be avoided and the smooth flow of the discharge pipe 63 can be ensured.

[0058] Preferably, the stirrer 52 further includes a stirring head 522 . The stirring head 522 is fixed to an end of the stirrer 52 away from the second sprocket 42 . The stirring head 522 rotates along the first direction F1 when the stirrer 52 rotates. The stirrer 52 stirs the cleaning liquid in the cleaning tank 20 .

[0059] Among them, fixing the stirring head 522 at one end of the stirrer 52 can improve the balance and stability of the system. This arrangement can reduce the shaking and vibration of the stirrer 52 during operation and ensure the stability of the stirring process. Placing the stirring head 522 at one end of the stirrer 52 can reduce the mechanical resistance generated by the stirrer 52 when rotating. This helps to reduce the load of the motor 51, extend the service life of the equipment, and improve energy utilization.

[0060] More preferably, the stirring head 522 is provided with a porous ring, and during stirring, the cleaning liquid continuously enters and exits the porous ring to form a vortex.

[0061] Among them, the porous ring structure can produce a strong vortex effect when stirring the liquid. This vortex can effectively distribute the cleaning liquid evenly in the stirring tank, thereby enhancing the cleaning effect. By forming a vortex, the cleaning liquid can better contact the surface of the precious metal and effectively remove the attached dirt and impurities. The vortex helps to accelerate the dissolution and dispersion of the chemicals in the cleaning liquid. Under the action of the porous ring, the cleaning liquid continuously enters and leaves the porous structure, thereby promoting the dissolution and dispersion process, allowing the active ingredients in the cleaning liquid to react more fully with the dirt. The porous ring structure can increase the formation and maintenance of vortices. This structure enables the liquid to move at a greater speed and force during the stirring process, thereby improving the stirring efficiency. The dirt in the cleaning liquid will be more thoroughly suspended and dispersed, making the cleaning effect more uniform and thorough.

[0062] Preferably, the agitator 52 further comprises: a liquid level monitor 523. The liquid level monitor 523 is disposed on the surface of the agitator 52 in a ring shape, and is electrically connected to the centrifugal pump 61. When the cleaning liquid is higher than the liquid level monitor 523, the centrifugal pump 61 is powered off by a signal sent by the liquid level monitor 523, and stops extracting the cleaning liquid.

[0063] Among them, the liquid level monitor 523 can monitor the liquid level of the cleaning liquid in the cleaning tank 20 in real time. By installing the monitor on the surface of the agitator 52 and designing it into a ring shape, it can cover the entire surface of the agitator 52, so as to more accurately detect the liquid level change of the cleaning liquid. When the liquid level of the cleaning liquid exceeds a certain safety range, it may cause overload of the equipment or overflow of the cleaning liquid, thereby causing damage to the equipment or environmental pollution. By connecting with the centrifugal pump 61 and controlling its operation, the liquid level monitor 523 can detect the situation of too high liquid level in time, and send a signal to the centrifugal pump 61 to stop extracting cleaning liquid to prevent damage to the equipment or overflow. The design of the liquid level monitor 523 can realize the automatic control of the cleaning device. Once the liquid level is detected to be too high, the monitor will send a signal to the centrifugal pump 61 to trigger the action of automatically stopping the extraction of cleaning liquid without manual intervention. This can improve the safety and stability of the equipment and reduce the workload of the operator. By stopping the extraction of cleaning liquid in time, the equipment can be effectively protected from damage that may be caused by too high liquid level. In addition, avoiding the overflow of cleaning liquid also helps to protect the environment and reduce the pollution of the cleaning liquid to the surrounding environment.

[0064] In this way, the liquid injection mechanism 60 is connected to the pipeline 521 of the stirring mechanism 50, and the cleaning liquid is stored in the base 10, so that the space utilization rate of the washing device 700 is improved, and the agitator 52 is used to evenly inject the cleaning liquid into the cleaning tank 20, so that the surface of the precious metal and the cleaning liquid are evenly contacted, thereby optimizing the cleaning effect of the washing device 700.

[0065] The above-described embodiments only express several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A washing device for precious metals, wherein the washing device is injected with a cleaning liquid for washing the surface of the precious metal, characterized in that: The washing device comprises: A base is disposed on the ground, the base is hollow, and the cleaning liquid is stored in the base; A cleaning tank, disposed on the base; A bracket, fixed on the base; A housing, fixedly connected to the bracket, wherein a first sprocket, a second sprocket and a chain are arranged in the housing; a stirring mechanism fixedly connected to the housing, the stirring mechanism comprising a motor fixedly connected to the first sprocket, and also comprising a stirrer fixedly connected to the second sprocket and located in the cleaning tank, wherein a pipeline is provided in the stirrer, wherein the chain is respectively placed on the first sprocket and the second sprocket, and the chain is respectively meshed with the first sprocket and the second sprocket; A liquid injection mechanism connected to the stirring mechanism pipeline, comprising a centrifugal pump, the centrifugal pump having a discharge end and a suction end, and the centrifugal pump is located on a side of the bracket away from the base, and also comprises a suction pipe arranged in the bracket, and a discharge pipe connected to the discharge end; The surface of the base on which the cleaning tank is provided is recorded as the first surface, and when viewed in a direction parallel to the first surface, the other end of the discharge pipe is connected to one end of the agitator, and one end of the agitator is fixed to the second sprocket, and one end of the suction pipe is located in the base, and the other end is connected to the suction end; Wherein, the suction pipe absorbs the cleaning liquid in the base through the centrifugal pump, and the cleaning liquid is transported to the agitator through the discharge pipe, and the cleaning liquid evenly enters the cleaning tank through the pipeline of the agitator.

2. A precious metal washing device according to claim 1, characterized in that: The direction in which the motor drives the sprocket to rotate is recorded as a first direction, the chain drives the second sprocket through the first sprocket, and the second sprocket rotates along the first direction, and the agitator rotates along the first direction.

3. A precious metal washing device according to claim 1, characterized in that: The base comprises: The liquid injection port is arranged on the first surface, and the cleaning liquid is injected into the base through the liquid injection port.

4. A precious metal washing device according to claim 1, characterized in that: The stirrer is in the shape of a circular shaft, and when viewed from a direction parallel to the first surface, the axis of the stirrer is perpendicular to the first surface.

5. A precious metal washing device according to claim 1, characterized in that: Observing along the direction parallel to the first surface, the discharge pipe is led out from the discharge end along the second direction, and the angle between the second direction and the first surface is recorded as R, which satisfies the relationship: 15°≤R≤30°. When the discharge pipe reaches the extension line of the agitator axis along the second direction, the discharge pipe is connected to the agitator along the agitator axis.

6. A precious metal washing device according to claim 1, characterized in that: The liquid injection mechanism also includes: Rotary joint: located between the discharge pipe and the agitator, the discharge pipe is connected to the agitator through the rotary joint.

7. A precious metal washing device according to claim 1, characterized in that: The inner diameter of the discharge pipe is the same as the inner diameter of the pipeline.

8. A precious metal washing device according to claim 1, characterized in that: The agitator also includes: A stirring head is fixed on an end of the stirrer away from the second sprocket. The stirring head is driven to rotate along a first direction by the rotation of the stirrer. The stirrer stirs the cleaning liquid in the cleaning tank.

9. A precious metal washing device according to claim 8, characterized in that: The stirring head is provided with a porous ring. During stirring, the cleaning liquid continuously enters and exits the porous ring to form a vortex.

10. A precious metal washing device according to claim 1, characterized in that: The agitator also includes: Liquid level monitor: It is arranged on the surface of the agitator in a ring shape. The liquid level monitor is electrically connected to the centrifugal pump. When observed in a direction parallel to the first surface, when the cleaning liquid is higher than the liquid level monitor, the centrifugal pump is powered off through the signal sent by the liquid level monitor and stops extracting the cleaning liquid.

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