Special sampling tool for zinc hydrometallurgy underflow

Abstract

A sampling tool specifically designed for bottom flow in wet zinc smelting includes a sampling mechanism, two connecting arms located on the left and right sides of the sampling mechanism, and two connecting seats. Each connecting seat has a fixed vertical plate at its top. One end of each connecting arm is hinged to the sampling mechanism via a second hinge pin, and the other end of each connecting arm is hinged to a corresponding vertical plate on the same side of the connecting arm via a first hinge pin. The sampling mechanism includes a cylinder, a bottom cover screwed to the lower end of the cylinder, a piston housed within the cylinder, a piston rod connected to the upper end of the piston, a guide ring between the piston rod and the cylinder, and a handle at the top of the cylinder. A filter screen is installed between the bottom cover and the lower end of the cylinder. A sample bottle is screwed to the lower end of a connecting cover connected to the side of the middle of the cylinder. A sample outlet pipe is installed between the connecting cover and the cylinder, and an exhaust pipe with a one-way valve is installed on the exhaust pipe. This tool quickly obtains leachate samples after filtering out solid particles, facilitating the sampling process and avoiding the risk of splashing and burns.

Description

Technical Field

[0001] This utility model relates to a sampling tool, specifically a sampling tool for underflow in wet zinc smelting. Background Technology

[0002] In the hydrometallurgical zinc production process, the underflow discharged from the bottom of the leaching equipment after leaching is completed is a key intermediate product. It usually contains a large number of unreacted solid particles and leachate containing target metal ions. Timely acquisition of leachate samples from the underflow is crucial for monitoring the leaching endpoint, analyzing solution composition, and optimizing process parameters.

[0003] However, underflow materials are generally characterized by high temperatures (typically exceeding 70°C) and high impurity content, posing significant challenges to on-site sampling. Currently, the common sampling method used by on-site operators is to directly scoop underflow samples from the bottom of the chute using a long-handled sampling spoon (or sampling ladle). However, this method has several significant problems: First, the scooped sample is a mixture of solid particles and leachate, which cannot be used directly for rapid analysis. It requires prolonged settling or additional filtration to separate the leachate, a time-consuming and labor-intensive process that severely lags behind the real-time requirements of production control. Second, the high-temperature solution easily conducts heat through the metal spoon handle, posing a risk of burns to operators. Furthermore, sampling from deeper tanks is inconvenient and prone to splashing, resulting in sample loss and posing a burn hazard.

[0004] To overcome the shortcomings of traditional sampling spoons, some improvements have emerged in existing technologies. These include increasing the handle length and adding a heat-insulating layer (such as wrapping it with insulating material). However, the core problem with these improvements is that they are essentially still "scooping" tools, unable to separate solid particles during sampling. Subsequent sedimentation or filtration still requires time, failing to fundamentally address the core need for "immediate acquisition of leachate samples." Furthermore, the scooping process still carries the risk of splashing and burns.

[0005] Therefore, there is an urgent need in the existing technology for a special sampling tool for the bottom flow of wet zinc smelting, so as to quickly obtain leachate samples after filtering out solid particles, facilitate the sampling process, and avoid the risk of splashing and scalding. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a special sampling tool for the bottom flow of wet zinc smelting, so as to quickly obtain leachate samples after filtering out solid particles, facilitate the sampling process, and avoid the risk of splashing and scalding.

[0007] The purpose of this utility model is achieved through the following technical solution: a special sampling tool for bottom flow in wet zinc smelting, comprising a sampling mechanism, two connecting arms located on the left and right sides of the sampling mechanism, and two connecting seats disposed on the left and right top edges of the tank body. Each connecting seat has a fixed upright plate at its top. One end of each connecting arm is hinged to the sampling mechanism via a second hinge shaft, and the other end of each connecting arm is hinged to the corresponding upright plate on the same side of the connecting arm via a first hinge shaft. The sampling mechanism includes a cylinder, a bottom cover screwed to the lower end of the cylinder, a piston disposed inside the cylinder, and a connector connected to the upper end of the piston. The device includes a piston rod, a guide ring disposed between the piston rod and the cylinder, and a handle disposed at the top of the cylinder. The piston rod extends upwards towards the top of the cylinder, and a grip is provided at the top of the extended portion of the piston rod. A feed through hole is provided in the middle of the bottom cover. A filter screen is disposed between the bottom cover and the lower port of the cylinder. A connecting cover is connected to the side of the middle of the cylinder. A sample bottle is screwed to the lower end of the connecting cover. A sample outlet tube is disposed between the connecting cover and the cylinder. The sample bottle and the cylinder are connected through the sample outlet tube. An exhaust pipe is provided on the connecting cover, and a one-way valve is provided on the exhaust pipe.

[0008] The upright plate is provided with a pin hole, and one of the connecting arms is provided with a positioning hole corresponding to the pin hole. A locking pin passes through the pin hole and the positioning hole.

[0009] It also includes a base frame located at the lower end of the sampling mechanism. The base frame includes a support ring and two connecting rods fixedly installed above the left and right ends of the support ring. The tops of these two connecting rods are respectively connected to the lower ends of the left and right sides of the cylinder.

[0010] Two layers of filter screens, an upper filter screen and a lower filter screen, are provided between the bottom cover and the lower port of the cylinder. The lower filter screen has a mesh size of 20, and the upper filter screen has a mesh size of 80.

[0011] The connecting seat is provided with a receiving groove for accommodating the top edge of the groove body. The opening of the receiving groove is located at the bottom of the connecting seat. The side of the connecting seat is provided with a screw hole communicating with the receiving groove. A locking bolt is connected to the screw hole, and the front end of the locking bolt abuts against the side of the top edge of the groove body.

[0012] The beneficial effects of this invention are: it can quickly obtain leachate samples with solid particles filtered out, facilitate the sampling process, and avoid the risk of splashing and scalding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the sampling mechanism.

[0014] In the diagram: 1-Tank; 2-Connecting seat; 3-Locking bolt; 4-Upright plate; 5-Locking pin; 6-First hinge shaft; 7-Connecting arm; 8-Second hinge shaft; 9-Cylinder; 10-Piston; 11-Piston rod; 12-Handle; 13-Handle; 14-Bottom cover; 15-Lower filter screen; 16-Upper filter screen; 17-Base frame; 18-Sample bottle; 19-Connecting cap; 20-Sample outlet tube; 21-Exhaust pipe; 22-One-way valve; 23-Guide ring. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings.

[0016] like Figure 1 , Figure 2 As shown, a special sampling tool for bottom flow in wet zinc smelting includes a sampling mechanism, two connecting arms 7 located on the left and right sides of the sampling mechanism, and two connecting seats 2 set on the left and right top edges of the tank body 1. Each connecting seat 2 has a vertical plate 4 fixedly installed at its top. One end of the connecting arm 7 is hinged to the sampling mechanism through a second hinge pin 8, and the other end of the connecting arm 7 is hinged to the corresponding vertical plate 4 on the same side of the connecting arm 7 through a first hinge pin 6. The sampling mechanism includes a cylinder 9, a bottom cover 14 screwed to the lower end of the cylinder 9, a piston 10 set inside the cylinder 9, a piston rod 11 connected to the upper end of the piston 10, and a piston rod 11 set on the piston rod 11. The guide ring 23 between the cylinder body 9 and the handle 13 at the top of the cylinder body 9, the piston rod 11 extending upwards to the top of the cylinder body 9, the top of the extended part of the piston rod 11 is provided with a handle 12, the bottom cover 14 is provided with a feed through hole in the middle, a filter screen is provided between the bottom cover 14 and the lower port of the cylinder body 9, a connecting cover 19 is connected to the side of the middle of the cylinder body 9, a sample bottle 18 is screwed to the lower end of the connecting cover 19, a sample outlet pipe 20 is provided between the connecting cover 19 and the cylinder body 9, the sample bottle 18 and the cylinder body 9 are connected through the sample outlet pipe 20, the connecting cover 19 is provided with an exhaust pipe 21, and a one-way valve 22 is provided on the exhaust pipe 21.

[0017] This utility model is mounted on the top of the chute via two connecting seats 2 on the left and right. During sampling, the operator holds handle 13 with one hand to move the sampling mechanism into the chute, and holds handle 12 with the other hand, pulling it upwards. Handle 12 drives piston 10 upwards via piston rod 11. The liquid in the chute, after being filtered by the filter screen, enters the cylinder 9. The operator continues to pull handle 12 upwards. When piston 10 moves to the middle of cylinder 9 and continues to move upwards, the liquid in cylinder 9 enters sample bottle 18 through sample outlet pipe 20. The connecting cap 19 is equipped with an exhaust pipe 21 and a one-way valve 22 to expel air from sample bottle 18 during the liquid entry process. When piston 10 moves upwards, one-way valve 22 prevents gas from entering sample bottle 18 and cylinder 9. After a sample is collected from the sample vial 18, the operator presses down on the handle 12, and the piston 10 discharges the liquid in the cylinder 9 through the feed port of the bottom cover 14 into the chute. After sampling, the operator lifts the sampling mechanism using the handle 13 and unscrews the sample vial 18. This invention can quickly obtain leachate samples after filtering out solid particles, conveniently complete the sampling process, and avoid the risk of splashing and burns.

[0018] like Figure 1 As shown, the upright plate 4 is provided with a pin hole, and a connecting arm 7 is provided with a positioning hole corresponding to the pin hole. A locking pin 5 passes through the pin hole and the positioning hole. When sampling is completed, the sampling mechanism is moved above the chute, and the locking pin 5 is inserted into the pin hole and the positioning hole to fix the position of the sampling mechanism. Then, the lower sample bottle 18 is unscrewed for easier operation. During sampling, the locking pin 5 is pulled out, and the sampling mechanism can be lowered into the chute for sampling.

[0019] See Figure 1 This utility model also includes a base frame 17 disposed at the lower end of the sampling mechanism. The base frame 17 includes a support ring and two connecting rods fixedly disposed above the left and right ends of the support ring. The tops of these two connecting rods are respectively connected to the lower ends of the left and right sides of the cylinder 9. During sampling, the sampling mechanism is moved into the chute, and the base frame 17 contacts the bottom of the chute, providing more stable support for the sampling mechanism within the chute and ensuring safety. Furthermore, the base frame 17 positions the feed through-hole of the bottom cover 14 in the middle of the chute. Compared to the liquid at the bottom of the chute, which contains more solid particles, the liquid in the middle of the chute contains fewer solid particles, making it less likely to clog the filter screen and facilitating successful sampling.

[0020] In this invention, the cylinder 9 and the bottom cover 14 are connected by screws, which facilitates the replacement of the filter screen. Figure 2As shown, two layers of filters, an upper filter screen 16 and a lower filter screen 15, are provided between the bottom cover 14 and the lower port of the cylinder 9. The lower filter screen 15 is 20 mesh, and the upper filter screen 16 is 80 mesh. Large solid particles are intercepted by the 20-mesh lower filter screen 15, while fine particles are blocked by the 80-mesh upper filter screen 16. The filtered leachate enters the cylinder 9.

[0021] like Figure 1 As shown, the connecting seat 2 is provided with a receiving groove for accommodating the top edge of the tank 1. The opening of the receiving groove is located at the bottom of the connecting seat 2. A screw hole communicating with the receiving groove is provided on the side of the connecting seat 2. A locking bolt 3 is connected to the screw hole, and the front end of the locking bolt 3 abuts against the side of the top edge of the tank 1. The connecting seat 2 is placed on the left and right top edges of the tank 1, with the left and right top edges of the tank 1 located in the receiving groove. The connecting seat 2 is then locked and fixed by the locking bolt 3.

[0022] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A special sampling tool for underflow in wet zinc smelting, characterized in that: The wet zinc smelting underflow sampling tool includes a sampling mechanism, two connecting arms located on the left and right sides of the sampling mechanism, and two connecting seats located on the left and right top edges of the tank. Each connecting seat has a fixed vertical plate at its top. One end of each connecting arm is hinged to the sampling mechanism via a second hinge shaft, and the other end of each connecting arm is hinged to the corresponding vertical plate on the same side of the connecting arm via a first hinge shaft. The sampling mechanism includes a cylinder, a bottom cover screwed to the lower end of the cylinder, a piston housed inside the cylinder, a piston rod connected to the upper end of the piston, and a connecting plate located between the piston rod and... The cylinder has a guide ring between its parts and a handle at the top of the cylinder. The piston rod extends upwards from the top of the cylinder and has a grip at the top of its extended portion. The bottom cover has a feed hole in the middle. A filter screen is provided between the bottom cover and the lower end of the cylinder. A connecting cover is connected to the side of the middle of the cylinder. A sample bottle is screwed to the lower end of the connecting cover. A sample outlet tube is provided between the connecting cover and the cylinder. The sample bottle and the cylinder are connected through the sample outlet tube. The connecting cover has an exhaust pipe with a one-way valve.

2. The sampling tool for bottom flow in wet zinc smelting according to claim 1, characterized in that: The upright plate is provided with a pin hole, and one of the connecting arms is provided with a positioning hole corresponding to the pin hole. A locking pin passes through the pin hole and the positioning hole.

3. The sampling tool for bottom flow in wet zinc smelting according to claim 2, characterized in that: It also includes a base frame located at the lower end of the sampling mechanism. The base frame includes a support ring and two connecting rods fixedly installed above the left and right ends of the support ring. The tops of these two connecting rods are respectively connected to the lower ends of the left and right sides of the cylinder.

4. The sampling tool for bottom flow in hydrometallurgical zinc smelting according to claim 3, characterized in that: Two layers of filter screens, an upper filter screen and a lower filter screen, are provided between the bottom cover and the lower port of the cylinder. The lower filter screen has a mesh size of 20, and the upper filter screen has a mesh size of 80.

5. The sampling tool for underflow in wet zinc smelting according to claim 4, characterized in that: The connecting seat is provided with a receiving groove for accommodating the top edge of the groove body. The opening of the receiving groove is located at the bottom of the connecting seat. The side of the connecting seat is provided with a screw hole communicating with the receiving groove. A locking bolt is connected to the screw hole, and the front end of the locking bolt abuts against the side of the top edge of the groove body.

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