Stirring tank cover plate for high-temperature strong-acid environment

Abstract

The utility model discloses a stirring tank cover plate for a high-temperature strong-acid environment, which comprises a cover plate body, a feeding hole arranged at the center of the cover plate body, a buffer tank fixedly arranged on the top surface of the cover plate body, a feeding pipe arranged at the lower part of the buffer tank, and a lower port arranged at the middle part of the lower end of the buffer tank, the top end of the buffer tank is connected with a top plate through a flange, a steam exhaust bent pipe is arranged at a central opening of the top plate, the steam exhaust bent pipe is bent downwards, a steam exhaust opening in the tail end of the steam exhaust bent pipe faces downwards, and the top end of the buffer tank is connected with the top plate through a flange. A supporting plate is fixedly arranged on the side face of the buffer tank and located below the steam exhaust port, a liquid receiving barrel is arranged on the supporting plate, a vertical pipe is fixedly connected into the liquid receiving barrel through a left fixed connecting rod and a right fixed connecting rod, the vertical pipe downwards stretches into the bottom of the liquid receiving barrel, a liquid receiving hopper is arranged at the top of the vertical pipe, the liquid receiving hopper is located under the steam exhaust port, and the liquid receiving hopper is close to the steam exhaust port. The safety is higher, and the top surface of the cover plate can be prevented from being corroded.

Description

Technical Field

[0001] The utility model relates to a cover plate, in particular to a stirring tank cover plate used in a high-temperature and strong-acid environment. Background Art

[0002] In the hydrometallurgical zinc smelting process, the leaching temperature is typically raised to above 90°C during the high-leaching step, and concentrated sulfuric acid is added to re-leach the valuable metals in the slurry to produce a zinc sulfate solution with a high zinc content. The tank cover is typically equipped with a feed hole, through which concentrated sulfuric acid is directly injected. During the injection process, excessive sulfuric acid flow can cause sulfuric acid splashing. Furthermore, when the solution temperature in the tank is above 90°C and the steam volume is excessive, sulfuric acid being added through the feed hole or the tank liquid can be forced out of the tank, causing accidents. Furthermore, the bottom surface of the tank cover is typically coated with anti-corrosion paint, while the top and sides of the tank cover are not. High-temperature steam carrying sulfuric acid overflows from the feed hole, corroding the area around the top surface of the cover. Therefore, there is an urgent need in the art for a stirring tank cover that is safer and prevents corrosion on the top surface of the cover for use in high-temperature, strong-acid environments. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a stirring tank cover plate for use in a high-temperature, strong-acid environment, which is safer and can avoid corrosion on the top surface of the cover plate.

[0004] The purpose of the utility model is achieved through the following technical solutions: a stirring tank cover for a high-temperature and strong acid environment, comprising a cover body, a feeding hole is provided in the center of the cover body, a buffer tank is fixedly provided on the top surface of the cover body, a feeding pipe is provided at the lower inlet of the buffer tank, a lower port is provided in the middle of the lower end of the buffer tank, the lower port is sealed with the top surface of the cover body, the lower port and the feeding hole are opposite to each other, the top of the buffer tank is connected to the top plate through a flange, the center opening of the top plate A steam exhaust elbow is provided at the outlet, the steam exhaust elbow is bent downward, and the steam outlet at the end of the steam exhaust elbow faces downward. A support plate is fixedly provided on the side of the buffer tank below the steam outlet, and a liquid receiving bucket is provided on the support plate. The liquid receiving bucket is fixedly connected to a vertical pipe by two left and right fixed connecting rods, and the vertical pipe extends downward into the bottom of the liquid receiving bucket. A liquid receiving hopper is provided on the top of the vertical pipe, and the liquid receiving hopper is located above the liquid receiving bucket. The liquid receiving hopper is located directly below the steam outlet, and the liquid receiving hopper is adjacent to the steam outlet.

[0005] The thickness of the cover plate body gradually increases from the edge to the central feeding hole. The top surface of the cover plate body is a plane, and the bottom surface of the cover plate body is a convex surface with the middle portion convex downward.

[0006] The support plate is provided with left and right retaining edges on the left and right side surfaces of the liquid receiving barrel.

[0007] The inner diameter of the upper port of the liquid receiving barrel gradually decreases from bottom to top.

[0008] The liquid receiving bucket is rotatably provided with an arc-shaped handle.

[0009] The beneficial effects of the utility model are as follows: the utility model can avoid sulfuric acid splashing during the injection of concentrated sulfuric acid, avoid accidents caused by sulfuric acid or liquid in the tank being pressed out by steam, has higher safety, and can avoid corrosion of the cover plate top surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0011] In the figure: 1-cover body; 2-feeding hole; 3-buffer tank; 4-lower port; 5-feed pipe; 6-exhaust elbow; 7-exhaust port; 8-support plate; 9-blocking edge; 10-liquid receiving barrel; 11-liquid receiving hopper; 12-vertical pipe; 13-fixed connecting rod; 14-handle; 15-top plate. DETAILED DESCRIPTION

[0012] The present invention will be described in detail below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, a stirring tank cover for high temperature and strong acid environment includes a cover body 1, a feeding hole 2 is provided in the center of the cover body 1, a buffer tank 3 is fixedly provided on the top surface of the cover body 1, a feeding pipe 5 is provided at the lower inlet of the buffer tank 3, a lower port 4 is provided in the middle of the lower end of the buffer tank 3, the lower port 4 is sealed with the top surface of the cover body 1, the lower port 4 and the feeding hole 2 are opposite to each other, the top of the buffer tank 3 is connected to the top plate 15 through a flange, and an exhaust elbow 6 is provided at the central opening of the top plate 15. The steam elbow 6 is bent downward, and the exhaust port 7 at the end of the exhaust elbow 6 faces downward. A support plate 8 is fixedly provided on the side of the buffer tank 3 below the exhaust port 7. A liquid receiving bucket 10 is provided on the support plate 8. The liquid receiving bucket 10 is fixedly connected to a vertical pipe 12 through two left and right fixed connecting rods 13. The vertical pipe 12 extends downward into the bottom of the liquid receiving bucket 10. A liquid receiving hopper 11 is provided on the top of the vertical pipe 12. The liquid receiving hopper 11 is located above the liquid receiving bucket 10. The liquid receiving hopper 11 is located directly below the exhaust port 7, and the liquid receiving hopper 11 is close to the exhaust port 7.

[0014] When concentrated sulfuric acid needs to be added, it enters the buffer tank 3 through the feed pipe 5. Compared with the feed pipe 5, the inner cavity of the buffer tank 3 suddenly increases, which brings a buffering effect and can effectively prevent sulfuric acid splashing caused by excessive sulfuric acid flow, so that it can be injected into the stirring tank relatively smoothly. When the temperature of the solution in the stirring tank is above 90°C and the amount of steam is too large, the high-temperature steam overflows from the feed hole 2 with sulfuric acid or liquid in the tank, and first enters the buffer tank 3 with a larger inner cavity. The sulfuric acid or liquid in the tank returns to the stirring tank under the action of its own gravity. The high-temperature steam is discharged through the exhaust elbow 6 with a very small amount of sulfuric acid or liquid in the tank. Because the exhaust elbow 6 is longer and the temperature is lower, most of the steam condenses into water in the process of passing through the exhaust elbow 6, along with a very small amount of sulfuric acid or liquid in the tank, and enters the liquid receiving barrel 10. The utility model is safer and can avoid corrosion on the top surface of the cover plate.

[0015] The thickness of the cover body 1 gradually increases from the edge to the central feeding hole 2. The top surface of the cover body 1 is a flat surface, and the bottom surface of the cover body 1 is a convex surface with the middle part convex downward. This structure allows the liquid after the steam condenses to gather at the feeding hole 2 and then fall back into the stirring tank, preventing the condensed liquid from flowing to the side of the cover body 1 without anti-corrosion paint, thereby corroding the side of the cover body 1.

[0016] See also Figure 1 The support plate 8 is provided with left and right retaining edges 9 on the left and right sides of the liquid receiving bucket 10. The left and right retaining edges 9 block the liquid receiving bucket 10 to prevent it from being overturned, thereby improving safety.

[0017] The inner diameter of the upper port of the liquid receiving barrel 10 gradually decreases from bottom to top, further preventing the liquid output from the exhaust elbow 6 from splashing.

[0018] The liquid receiving bucket 10 is rotatably provided with an arc-shaped handle 14. The operator holds the handle 14 and rotates the handle 14 to the top of the liquid receiving bucket 10 to facilitate lifting it and placing it to other locations.

[0019] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Simple modifications or equivalent replacements of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A stirring tank cover for use in a high-temperature, strongly acidic environment, comprising a cover body, a feeding hole being provided at the center of the cover body, and characterized in that: A buffer tank is fixedly provided on the top surface of the cover body, a feed pipe is provided at the lower inlet of the buffer tank, a lower port is provided in the middle of the lower end of the buffer tank, the lower port is sealed with the top surface of the cover body, and the lower port is opposite to the feeding hole. The top of the buffer tank is connected to the top plate through a flange, and an exhaust bend is provided at the central opening of the top plate. The exhaust bend is bent downward, and the exhaust port at the end of the exhaust bend faces downward. A support plate is fixedly provided on the side of the buffer tank below the exhaust port, and a liquid receiving bucket is provided on the support plate. The liquid receiving bucket is fixedly connected to a vertical pipe by two left and right fixed connecting rods. The vertical pipe extends downward into the bottom of the liquid receiving bucket. A liquid receiving hopper is provided on the top of the vertical pipe. The liquid receiving hopper is located above the liquid receiving bucket, the liquid receiving hopper is located directly below the exhaust port, and the liquid receiving hopper is adjacent to the exhaust port.

2. The stirring tank cover for high temperature and strong acid environment according to claim 1, characterized in that: The thickness of the cover plate body gradually increases from the edge to the central feeding hole. The top surface of the cover plate body is a plane, and the bottom surface of the cover plate body is a convex surface with the middle portion convex downward.

3. The stirring tank cover for high temperature and strong acid environment according to claim 1, characterized in that: The support plate is provided with left and right retaining edges on the left and right side surfaces of the liquid receiving barrel.

4. The stirring tank cover for high temperature and strong acid environment according to claim 1, characterized in that: The inner diameter of the upper port of the liquid receiving barrel gradually decreases from bottom to top.

5. The stirring tank cover plate for high temperature and strong acid environment according to claim 1, characterized in that: The liquid receiving bucket is rotatably provided with an arc-shaped handle.

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