Automatic collecting and conveying device for accumulated liquid of waste gas absorption air pipe

Abstract

The utility model discloses an automatic collecting and conveying device for waste gas absorption air pipe accumulated liquid, which is arranged below an air pipe and comprises a liquid receiving box, a flange ball valve, a detachable U-shaped trap structure, a liquid outlet pipe and a low-position storage tank, the liquid receiving box is arranged at the lowest point of the air pipe, an outlet of the liquid receiving box is communicated with one end of the flange ball valve, and the other end of the flange ball valve is communicated with the liquid outlet pipe. The other end of the flange ball valve is connected with one end of the detachable U-shaped trap structure, the other end of the detachable U-shaped trap structure is led downwards to the low-position storage tank through the liquid outlet pipe, and the height of the water outlet end of the detachable U-shaped trap structure is lower than the upper end of the liquid receiving box and higher than the water inlet end of the flange ball valve. And the dead weight pressure of the liquid retained in the detachable U-shaped trap structure is greater than the suction pressure of the fan, so that the stored liquid is prevented from being sucked away by wind pressure. The accumulated liquid in the waste gas absorption air pipe is automatically collected and discharged, so that the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of accumulated liquid collection, and in particular relates to an automatic collecting and conveying device for accumulated liquid in a waste gas absorption air duct. Background Art

[0002] In the field of hydrometallurgical electrolysis, acid mist will be generated on the surface of the electrolytic cell during the electrolytic production process, which will affect the health of the operators on the surface of the cell. At present, domestic electrolytic production usually uses methods such as shielding the electrolytic cell (integral cover, plastic balls on the liquid surface, coating, etc.), large air volume acid mist suction on the surface of the cell, and suction after covering the electrolytic cell acid mist cover. When the exhaust gas duct is sucked, due to factors such as evaporation of the electrolytic cell liquid surface, gas generated by electrolysis, and excessive fan pressure, the water vapor containing non-ferrous metal ions entrained in the exhaust gas accumulates in the duct, causing crystallization of the fan blades, weighting of the duct, and loss of non-ferrous metals. If the accumulated liquid in the duct is discharged manually on a regular basis, it is impossible to directly observe the amount of accumulated liquid in the duct to determine whether the accumulated liquid should be discharged, and the workload of the operator is increased. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide an automatic collection and transportation device for liquid accumulated in waste gas absorption air ducts.

[0004] The specific technical solutions are as follows:

[0005] An automatic collection and transportation device for liquid accumulated in an exhaust gas absorption air duct is arranged below the air duct and comprises a liquid receiving box, a flange ball valve, a detachable U-shaped water trap structure, a liquid outlet pipe and a low-level storage tank. The liquid receiving box is arranged at the lowest point of the air duct, and the outlet of the liquid receiving box is connected to one end of the flange ball valve, and the other end of the flange ball valve is connected to one end of the detachable U-shaped water trap structure. The other end of the detachable U-shaped water trap structure is downwardly led to the low-level storage tank through the liquid outlet pipe. The height of the water outlet end of the detachable U-shaped water trap structure is lower than the upper end of the liquid receiving box and higher than the water inlet end of the flange ball valve. The dead weight pressure of the liquid retained in the detachable U-shaped water trap structure is greater than the suction pressure of the fan, so as to prevent the stored liquid from being sucked away by the wind pressure.

[0006] Furthermore, the detachable U-shaped water trap structure includes a first straight pipe, a second straight pipe, a third straight pipe and a first connecting elbow. The first straight pipe, the second straight pipe and the third straight pipe are connected through the first connecting elbow to form a U-shaped structure. The upper end of the first straight pipe is connected to the flange ball valve, and the upper end of the third straight pipe is connected to the liquid outlet pipe through the first connecting elbow.

[0007] Furthermore, the liquid outlet pipe includes a fourth straight pipe, a fifth straight pipe and a second connecting elbow. The fourth straight pipe and the fifth straight pipe are connected by the second connecting elbow. The fourth straight pipe is connected to the third straight pipe by the first connecting elbow. The fifth straight pipe is led downward to the low-level storage tank.

[0008] Furthermore, a liquid level gauge is provided on the low-level storage tank, and a liquid outlet of the low-level storage tank is connected to a delivery pump.

[0009] Further, the liquid level meter and the delivery pump are interlocked.

[0010] Furthermore, the outlet of the liquid receiving box is provided with a flange interface, the flange interface of the liquid receiving box is connected to one end of the flange ball valve, the upper end of the first straight pipe is provided with a flange interface, and the flange interface of the first straight pipe is connected to the other end of the flange ball valve.

[0011] The beneficial effects of the utility model are:

[0012] 1) In the utility model, the accumulated liquid in the exhaust gas absorption air duct is automatically collected and discharged, reducing the labor intensity of the operation;

[0013] 2) The solution and metal ions lost by evaporation in the electrolytic cell are finally enriched in the low-level storage tank and returned to the electrolysis system or the previous process for reuse, thus avoiding the loss of metal ions and increasing economic benefits;

[0014] 3) The water storage pipe is detachable for easy replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1. air duct; 2. liquid collecting box; 3. flange ball valve; 4. detachable U-shaped water trap structure; 41. first straight pipe; 42. second straight pipe; 43. third straight pipe; 44. first connecting elbow; 5. liquid outlet pipe; 51. fourth straight pipe; 52. fifth straight pipe; 53. second connecting elbow; 6. low-level storage tank; 61. liquid level gauge; 62. delivery pump; 7. flange interface. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the drawings in the specification, but the protection scope of the utility model is not limited thereto.

[0018] like Figure 1As shown, an automatic collection and transportation device for liquid accumulation in an exhaust gas absorption air duct is arranged below an air duct 1, and includes a liquid receiving box 2, a flange ball valve 3, a detachable U-shaped water trap structure 4, a liquid outlet pipe 5 and a low-level storage tank 6. The detachable U-shaped water trap structure 4 includes a first straight pipe 41, a second straight pipe 42, a third straight pipe 43 and a first connecting elbow 44. The first straight pipe 41, the second straight pipe 42, and the third straight pipe 43 are connected by the first connecting elbow 44 to form a U-shaped structure. A flange interface 7 is provided at the upper end of the first straight pipe 41. The liquid outlet pipe 5 includes a fourth straight pipe 51, a fifth straight pipe 52 and a second connecting elbow 53. The fourth straight pipe 51 and the fifth straight pipe 52 are connected by the second connecting elbow 53. The fourth straight pipe 51 is connected to the first straight pipe 44 through the first connecting elbow 44. Three straight pipes 43, the liquid receiving box 2 is arranged at the lowest point of the air duct 1. The shape of the liquid receiving box 2 is a square box without a cover, and it is made of the same material as the air duct 1. The lowest position of the air duct 1 can be found according to the actual installation situation of the air duct 1, and a hole is directly opened at the lowest position of the air duct 1 to weld or glue the liquid receiving box 2 of the same material. The outlet of the liquid receiving box 2 is provided with a flange interface 7, which is bolted to one end of the flange ball valve 3; the flange interface 7 of the first straight pipe 41 is connected to the other end of the flange ball valve 3, and the fifth straight pipe 52 is led downward to the low-level storage tank 6. The height of the outlet end of the detachable U-shaped water trap structure 4 is lower than the upper end of the liquid receiving box 2, and higher than the water inlet end of the flange ball valve 3. A liquid level gauge 61 is provided on the low-level storage tank 6, and the liquid outlet of the low-level storage tank 6 is connected to the delivery pump 62, and the liquid level gauge 61 and the delivery pump 62 are interlocked.

[0019] When there is accumulated liquid in the air duct 1, the accumulated liquid flows along the bottom of the air duct 1 to the lowest point of the air duct 1 due to gravity, and slowly gathers in the liquid receiving box 2. During production, the flange ball valve 3 is normally opened, and the accumulated liquid can flow out of the liquid receiving box 2 freely. The accumulated liquid is always retained in the detachable U-shaped water trap structure 4. When the accumulated liquid in the liquid receiving box 2 is large and the liquid level is higher than the outlet section of the detachable U-shaped water trap structure 4, the accumulated liquid in the liquid receiving box 2 is automatically discharged until the two ends of the detachable U-shaped water trap structure 4 return to the same liquid level and then remain stable. On the one hand, the stored liquid in the detachable U-shaped water trap structure 4 prevents the air duct 1 from being connected to the atmosphere, thereby maintaining the negative pressure suction effect of the exhaust gas absorption air duct 1. On the other hand, it isolates the exhaust gas containing acid mist in the air duct 1 from escaping, thereby protecting the on-site operating environment. When emptying the stored liquid in the detachable U-shaped water trap structure 4, close the flange ball valve 3, remove the connecting bolts of the flange valve 3, remove the first connecting elbow 44, and completely empty the solution normally stored in the detachable U-shaped water trap structure 4. At this time, the flange ball valve 3 is closed, which does not affect the airtightness of the exhaust gas absorption system.

Claims

1. An automatic collection and transportation device for liquid accumulation in exhaust gas absorption ducts, characterized in that: It is arranged below the air duct (1), and comprises a liquid receiving box (2), a flange ball valve (3), a detachable U-shaped water trap structure (4), a liquid outlet pipe (5) and a low-level storage tank (6). The liquid receiving box (2) is arranged at the lowest point of the air duct (1). The outlet of the liquid receiving box (2) is connected to one end of the flange ball valve (3). The other end of the flange ball valve (3) is connected to one end of the detachable U-shaped water trap structure (4). The other end of the detachable U-shaped water trap structure (4) is led downward to the low-level storage tank (6) through the liquid outlet pipe (5). The height of the water outlet end of the detachable U-shaped water trap structure (4) is lower than the upper end of the liquid receiving box (2) and higher than the water inlet end of the flange ball valve (3).

2. The automatic collection and transportation device for liquid accumulation in exhaust gas absorption duct according to claim 1, characterized in that: The detachable U-shaped water trap structure (4) comprises a first straight pipe (41), a second straight pipe (42), a third straight pipe (43) and a first connecting elbow (44); the first straight pipe (41), the second straight pipe (42) and the third straight pipe (43) are connected via the first connecting elbow (44) to form a U-shaped structure; the upper end of the first straight pipe (41) is connected to the flange ball valve (3); and the upper end of the third straight pipe (43) is connected to the liquid outlet pipe (5) via the first connecting elbow (44).

3. The automatic collection and transportation device for liquid accumulation in exhaust gas absorption duct according to claim 2, characterized in that: The liquid outlet pipe (5) comprises a fourth straight pipe (51), a fifth straight pipe (52) and a second connecting elbow (53); the fourth straight pipe (51) and the fifth straight pipe (52) are connected via the second connecting elbow (53); the fourth straight pipe (51) is connected to the third straight pipe (43) via the first connecting elbow (44); and the fifth straight pipe (52) is led downward to the low-position storage tank (6).

4. The automatic collection and transportation device for liquid accumulation in exhaust gas absorption duct as claimed in claim 3, characterized in that: A liquid level meter (61) is provided on the low-level storage tank (6), and a liquid outlet of the low-level storage tank (6) is connected to a delivery pump (62).

5. The automatic collection and transportation device for liquid accumulation in exhaust gas absorption duct as claimed in claim 4, characterized in that: The liquid level gauge (61) and the delivery pump (62) are interlocked.

6. The automatic collection and transportation device for liquid accumulation in exhaust gas absorption duct as claimed in claim 5, characterized in that: The outlet of the liquid receiving box (2) is provided with a flange interface (7), the flange interface (7) of the liquid receiving box (2) is connected to one end of the flange ball valve (3), the upper end of the first straight pipe (41) is provided with a flange interface (7), and the flange interface (7) of the first straight pipe (41) is connected to the other end of the flange ball valve (3).

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