System for cleaning scabs on pipe wall of leaf filter

Abstract

The utility model relates to the technical field of cleaning systems, in particular to a cleaning system for scabs on the pipe wall of a leaf filter. Comprising a leaf filter tank body which is connected with a slag discharge pipe, a balance pipe, a pressure relief pipe and a filtrate outlet pipe, the slag discharge pipe is connected with an alkali liquor inlet pipe; a valve I is arranged at the bottoms of the balance pipe and the pressure relief pipe; the filtrate outlet pipe is connected with an alkali washing liquid outlet pipe; the alkali liquor inlet pipe is connected with the bottoms of the balance pipe and the pressure relief pipe through a pipeline I, and the joint of the alkali liquor inlet pipe and the balance pipe as well as the pressure relief pipe is positioned above the valve I; a valve II is arranged below the joint of the slag discharge pipe and the alkali liquor inlet pipe; a valve III is arranged below the joint of the filtrate outlet pipe and the alkali wash water outlet pipe; by arranging the first pipeline, alkali liquor can be led into the balance pipe and the pressure relief pipe from the bottoms of the balance pipe and the pressure relief pipe, the balance pipe and the pressure relief pipe are flushed, and the flushed alkali liquor enters the leaf filter tank body and then is discharged through the filtrate outlet pipe and the alkali liquor outlet pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cleaning system technical field, specifically is a kind of leaf filter pipe wall scab cleaning system. BACKGROUND

[0002] At present, Bayer method production alumina mainly uses high-efficiency vertical leaf filter to complete crude liquid refining, vertical leaf filter is non-standard one type pressure vessel, normal working pressure is at 0.05Mpa~0.39Mpa, it can effectively handle the solid content not more than 3% of solid-liquid separation in solution.

[0003] In the operation process of leaf filter, plankton in sodium aluminate solution can be deposited in the balance pipe inside the body, pressure relief pipe, when leaf filter operates for a long time, relatively thick scab can be formed on pipe wall, bottom, and scab needs to be removed by alkali washing;In the existing alkali washing process, the flowability of lye in pressure relief pipe and balance pipe is poor, leading to very poor alkali washing effect in pressure relief pipe and balance pipe. UTILITY MODEL CONTENTS

[0004] The utility model is mainly aimed at providing a kind of leaf filter pipe wall scab cleaning system to solve the problem of poor alkali washing effect of pressure relief pipe and balance pipe in the above-mentioned prior art leaf filter.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a kind of leaf filter pipe wall scab cleaning system, including leaf filter tank body, leaf filter tank body is connected with discharge pipe, balance pipe, pressure relief pipe and filtrate outlet pipe;Discharge pipe is connected with lye inlet pipe;The bottom of balance pipe and pressure relief pipe is equipped with valve one;Filtrate outlet pipe is connected with alkali washing liquid outlet pipe;Lye inlet pipe is connected with the bottom of balance pipe and pressure relief pipe by pipeline one, and the connection of lye inlet pipe and balance pipe and pressure relief pipe is located above valve one.

[0006] Further, the position below the connection of discharge pipe and lye inlet pipe is equipped with valve two;The lower side of the connection of filtrate outlet pipe and alkali washing liquid outlet pipe is equipped with valve three.

[0007] Further, valve four is equipped on pipeline one.

[0008] Further, leaf filter tank body is connected with feed pipe, and the end of feed pipe and balance pipe away from leaf filter tank body is connected with crude liquid tank.

[0009] Further, safety valve pipe is connected on the top of leaf filter tank body, and safety valve is installed on safety valve pipe.

[0010] The utility model can introduce lye from the bottom of balance pipe and pressure relief pipe to balance pipe and pressure relief pipe by setting pipeline one, flush balance pipe and pressure relief pipe, and then the lye after flushing enters leaf filter tank body, and then is discharged through filtrate outlet pipe and alkali washing liquid outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0012] Figure 1 It is a structural diagram of an embodiment;

[0013] In the figure: 1. Leaf filter tank; 2. Slag discharge pipe; 3. Balance pipe; 4. Pressure relief pipe; 5. Alkali solution inlet pipe; 6. Valve 1; 7. Pipeline 1; 8. Valve 2; 9. Filtrate outlet pipe; 10. Alkali wash liquid outlet pipe; 11. Valve 3; 12. Feed pipe; 13. Crude liquid tank; 14. Safety valve pipe; 15. Safety valve; 16. Valve 4. DETAILED DESCRIPTION

[0014] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0015] like Figure 1 As shown, according to an embodiment of the present invention, a leaf filter tube wall scar cleaning system is provided, including a leaf filter tank body 1, the leaf filter tank body 1 is connected to a slag discharge pipe 2, a balancing pipe 3, a pressure relief pipe 4 and a filtrate outlet pipe 9; the slag discharge pipe 2 is connected to an alkali liquid inlet pipe 5; a valve 6 is provided at the bottom of the balancing pipe 3 and the pressure relief pipe 4; the filtrate outlet pipe 9 is connected to an alkali washing liquid outlet pipe 10; the alkali liquid inlet pipe 5 is connected to the bottom of the balancing pipe 3 and the pressure relief pipe 4 through a pipe 7, and the connection between the alkali liquid inlet pipe 5, the balancing pipe 3 and the pressure relief pipe 4 is located above the valve 6.

[0016] A valve 2 8 is provided below the connection between the slag discharge pipe 2 and the alkali solution inlet pipe 5; a valve 3 11 is provided below the connection between the filtrate outlet pipe 9 and the alkali washing liquid outlet pipe 10; valves are also provided on the alkali solution inlet pipe 5 and the alkali washing liquid outlet pipe 10; and a valve 4 16 is provided on the pipeline 1 7.

[0017] The leaf filter tank body 1 is connected to a feed pipe 12 , and the feed pipe 12 and the balance pipe 3 are connected to a coarse liquid tank 13 at one end away from the leaf filter tank body 1 .

[0018] A safety valve pipe 14 is connected to the top of the leaf filter tank 1 , and a safety valve 15 is installed on the safety valve pipe 14 .

[0019] The balance pipe 3 and the pressure relief pipe 4 are arranged along the up-down direction, and the bottom is provided with a valve 6; the original caustic soda washing mode is that the valve 6 is closed, the caustic soda first enters the deslagging pipe 2 through the caustic soda inlet pipe 5, then enters the leaf filter tank 1, and then enters the balance pipe 3 and the pressure relief pipe 4 from the top of the balance pipe 3 and the pressure relief pipe 4; the caustic soda cannot flow in the balance pipe 3 and the pressure relief pipe 4, so that the balance pipe 3 and the pressure relief pipe 4 cannot be cleaned.

[0020] The above embodiment can introduce the caustic soda into the balance pipe 3 and the pressure relief pipe 4 from the bottom of the balance pipe 3 and the pressure relief pipe 4 by arranging the pipe 7, flushes the balance pipe 3 and the pressure relief pipe 4, and then the flushed caustic soda enters the leaf filter tank 1, and then is discharged through the filtrate outlet pipe 9 and the caustic soda washing outlet pipe 10.

[0021] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of leaf filter pipe wall scab cleaning system, including leaf filter tank (1), the leaf filter tank (1) is connected with discharge pipe (2), balance pipe (3), pressure relief pipe (4) and filtrate outlet pipe (9);The discharge pipe (2) is connected with lye inlet pipe (5);The bottom of balance pipe (3) and pressure relief pipe (4) is equipped with valve one (6);The filtrate outlet pipe (9) is connected with lye outlet pipe (10);Its characterized in that, The alkali inlet pipe (5) is connected with the bottom of the balance pipe (3) and the pressure relief pipe (4) through the pipe one (7), and the connection position of the alkali inlet pipe (5) with the balance pipe (3) and the pressure relief pipe (4) is above the valve one (6).

2. The leaf filter tube wall scab cleaning system of claim 1, wherein, A valve two (8) is arranged below the connection position of the residue discharge pipe (2) and the alkali inlet pipe (5); and a valve three (11) is arranged below the connection position of the filtrate outlet pipe (9) and the alkali liquid outlet pipe (10).

3. The leaf filter tube wall scab cleaning system of claim 1, wherein, A valve four (16) is arranged on the pipe one (7).

4. The leaf filter tube wall scab cleaning system of claim 1, wherein, The leaf filter tank (1) is connected with the feed pipe (12), and the feed pipe (12) and the balance pipe (3) are connected with the coarse liquid tank (13) at the end away from the leaf filter tank (1).

5. The leaf filter tube wall scab cleaning system of claim 1, wherein, The leaf filter tank (1) is connected with the safety valve pipe (14) at the top, and the safety valve (15) is arranged on the safety valve pipe (14).

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