Sealing structure of water quenching granulation pool manhole

Abstract

The utility model provides a kind of water granulation pool manhole sealing structure, the manhole of water granulation pool pool top is provided with cover plate above, the hole wall of manhole is inwards overhanging with the annular water tank of notch upwards near orifice, the bottom plate surface of cover plate extends downwards with annular boss, and the top of annular boss is inserted in the groove of annular water tank.The utility model mainly cooperates through cover plate and annular water tank, and make annular boss insert below the liquid level of water accumulation in annular water tank, so that water accumulation and annular boss form liquid seal, isolate the inner and outer environment of manhole, prevent the harmful gas in water granulation pool from leaking.

Description

Technical Field

[0001] This utility model relates to a copper matte water quenching granulation equipment, specifically to a sealing structure for the inspection hole of the water quenching granulation tank. Background Technology

[0002] Copper matte is an intermediate product in copper smelting, a molten mixture of cuprous sulfide and ferrous sulfide, produced at extremely high temperatures, typically above 1100°C. After flowing from the furnace, the molten copper matte is rapidly cooled and broken into fine particles by a high-pressure water jet. This facilitates subsequent transportation, storage, and grinding / flotation processes. This process is known as the water-quenching granulation process for copper matte. The granulation tank is a large container used for water quenching operations. Its internal environment is harsh, filled with high-temperature saturated steam and acidic corrosive gases (such as SO2). High-temperature water-slag mixtures may also splash from the top of the tank. Therefore, the interior of the granulation tank must be physically isolated from the external environment to prevent accidental falls, burns from high-temperature steam, and leakage of harmful gases.

[0003] The granulation tank is equipped with an inspection hole at the top, which serves as a pressure relief and explosion-proof function, and also as a passage for inspection and maintenance. The inspection hole is fitted with a sealing cover, keeping it sealed when not under maintenance. Because the sealing cover needs to withstand the severe vibrations and the impact of instantaneous explosions generated during water quenching, its sealing design is both challenging and crucial to ensure production safety and meet environmental protection requirements. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for the inspection hole of a water-quenched granulation tank, ensuring the sealing performance of the inspection hole cover and preventing the leakage of harmful gases.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sealing structure for the inspection hole of a water quenching granulation tank, wherein a cover plate is provided above the inspection hole on the top of the water quenching granulation tank, the opening of the inspection hole is located within the plate area of ​​the cover plate, the bottom plate surface of the cover plate overlaps the edge of the inspection hole opening, an annular water groove with the groove opening facing upward is suspended inward on the hole wall near the opening of the inspection hole, and an annular convex ring with a shape matching the groove opening of the annular water groove extends downward from the bottom plate surface of the cover plate, and the top of the annular convex ring is inserted into the groove of the annular water groove.

[0006] The main feature of this invention is to set an annular water trough with the groove opening facing upward on the wall of the inspection hole, and to set an annular convex ring on the bottom surface of the cover plate to be inserted below the liquid surface of the water accumulated in the annular water trough, so that the water in the annular water trough and the annular convex ring cooperate to form a liquid seal, which isolates the internal and external environment of the inspection hole and prevents harmful gases in the water quenching granulation tank from leaking out. Attached Figure Description

[0007] Figure 1 Cross-sectional view of the sealing structure of the inspection hole in the water-quenched granulation tank;

[0008] Figure 2 for Figure 1 Cross-sectional view at point AA. Detailed Implementation

[0009] See Figure 1 , Figure 2 The sealing structure of the inspection hole of the water quenching granulation tank shown has a cover plate 20 above the inspection hole 10 on the top of the water quenching granulation tank. The opening of the inspection hole 10 is located within the plate area of ​​the cover plate 20. The bottom plate surface of the cover plate 20 overlaps the edge of the opening of the inspection hole 10. An annular water groove 11 with the groove opening facing upward is suspended inward on the hole wall 101 near the opening of the inspection hole 10. An annular protrusion 21 with a shape matching the groove opening of the annular water groove 11 extends downward from the bottom plate surface of the cover plate 20. The top of the annular protrusion 21 is inserted into the groove of the annular water groove 11.

[0010] In the above scheme, the annular water tank 11 and the inspection hole 10 have a fixed connection or are integrally formed. The depth and width of the annular water tank 11 are determined according to the size of the inspection hole 10. Water is filled into the annular water tank 11, so that the annular protrusion 21 on the bottom surface of the cover plate 20 is inserted below the liquid surface of the water accumulated in the annular water tank 11. The annular protrusion 21 and the water in the annular water tank 11 cooperate to form a water seal. Figure 1 In the illustrated embodiment, the annular convex ring 21 is 150 mm high and 20 mm thick, the distance between the outer wall of the annular convex ring 21 and the edge of the cover plate 20 is 100 mm, and the annular water groove 11 has a groove depth of 200–300 mm and a groove width of 150–200 mm. The inspection hole 10 and the cover plate 20 are preferably circular or square in shape, such as… Figure 2 As shown, the inspection hole 10 and the cover plate 20 in this embodiment are square.

[0011] In order to reduce the space occupied by the annular water tank 11 and save materials, the outer ring wall of the annular water tank 11 shares the same wall as the hole wall 101 of the inspection hole 10.

[0012] A more preferred embodiment is that the edge of the inner annular wall 112 of the annular water tank 11 is lower than the edge of the outer annular wall. The top edge of the annular convex ring 21 is spaced apart from the bottom 111 of the annular water tank 11, and the inner and outer wall surfaces of the annular convex ring 21 are spaced apart from the inner wall of the annular water tank 11, respectively. Figure 1 In the embodiment shown, the edge of the inner ring groove wall 112 is 50mm lower than the edge of the outer ring groove wall. When the water in the annular water tank 11 is full, the water overflows from the outer ring groove wall side.

[0013] like Figure 1As shown, to inject water into the annular water tank 11, a water injection channel 12 is provided on the cover plate 20. The water injection channel 12 connects to the water injection port on the bottom surface of the cover plate 20, which is located between the annular convex ring 21 and the hole wall 101. Alternatively, a water injection channel 12 is provided on the hole wall 101 near the hole opening of the inspection hole 10, and the water injection port connecting the water injection channel 12 to the hole wall 101 is higher than the upper edge of the inner annular groove wall 112. In the above scheme, the water injection channel 12 is connected to a water source, or a water pipe is used to connect the water source in the water injection channel 12, and the water flow is controlled by a valve to keep the annular water tank 11 full of water, forming a dynamic water seal. If the water injection channel 12 is located on the cover plate 20, the water injection port can only be located between the annular convex ring 21 and the hole wall 101 to ensure that harmful gases in the granulation tank will not bypass the water seal structure and overflow from the water injection channel 12; if the water injection channel 12 is located on the hole wall 101, the water injection port is preferably located at a position higher than the upper edge of the inner annular groove wall 112, otherwise the water in the annular water tank 11 will be difficult to fill.

[0014] Preferably, a sealing ring 22 is provided at the overlap between the cover plate 20 and the inspection hole 10. The sealing ring 22 and the water seal of the annular water tank 11 form a double seal, further improving the sealing effect of the inspection hole 10 of the water quenching granulation tank. The sealing ring 22 needs to have high temperature resistance and corrosion resistance, so polytetrafluoroethylene (PTFE) sealing rings are preferred.

[0015] To ensure the strength of the cover plate 20, it is made of steel plate, with a lifting lug 23 in the middle of its upper surface. In existing technologies, the inspection hole 10 of the water-quenched granulation tank generally uses a castable refractory sealing structure. Since the cover plate 20 of the inspection hole 10 needs to withstand the severe vibrations and instantaneous explosions generated during water quenching, cracks can easily occur in the castable refractory layer. Therefore, using steel for the cover plate 20 provides sufficient strength and rigidity to withstand internal pressure and impact loads, significantly improving its safety performance, maintenance cycle, and service life, and preventing cracking of the sealing structure. The lifting lug 23 facilitates the installation and removal of the cover plate 20 using lifting equipment.

Claims

1. A sealing structure for an inspection hole in a water-quenched granulation tank, wherein a cover plate (20) is provided above the inspection hole (10) on the top of the water-quenched granulation tank, and the opening of the inspection hole (10) is located within the plate area of ​​the cover plate (20), characterized in that: The bottom plate of the cover plate (20) overlaps the edge of the inspection hole (10). An annular water trough (11) with its opening facing upward extends inward from the wall (101) of the inspection hole (10). An annular protrusion (21) with its shape matching the opening of the annular water trough (11) extends downward from the bottom plate of the cover plate (20). The top of the annular protrusion (21) is inserted into the groove of the annular water trough (11).

2. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1, characterized in that: The outer ring wall of the annular water tank (11) and the hole wall (101) of the inspection hole (10) share the same wall.

3. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1, characterized in that: The inner ring wall (112) of the annular water tank (11) is lower than the outer ring wall.

4. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1 or 2, characterized in that: The cover plate (20) is provided with a water injection channel (12), which is located between the annular convex ring (21) and the hole wall (101).

5. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1 or 2, characterized in that: The upper section of the hole wall (101) is provided with a water injection channel (12) that penetrates the hole wall (101), and the outlet of the water injection channel (12) is higher than the upper edge of the inner ring groove wall (112).

6. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1 or 2, characterized in that: A sealing ring (22) is provided at the joint between the cover plate (20) and the inspection hole (10).

7. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1, characterized in that: The top edge of the annular convex ring (21) is spaced apart from the bottom (111) of the annular water tank (11), and the inner and outer walls of the annular convex ring (21) are spaced apart from the inner wall of the annular water tank (11).

8. The sealing structure for the inspection hole of the water-quenched granulation tank according to claim 1, characterized in that: The cover plate (20) is made of steel plate, and a lifting lug (23) is provided in the middle of the upper plate surface.

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