Economical phosphating deslagging system

Abstract

The utility model provides an economical phosphating and deslagging system. The economical phosphating and deslagging system comprises a phosphating tank, when the economical phosphating slag removal system is used, phosphating slag is preliminarily precipitated and concentrated in the conical tank of the phosphating tank, is conveyed into the phosphating precipitation tank by the phosphating solution conveying pump, enters the bottom of the phosphating precipitation tank through the opening of the special liquid guide pipe, slowly rises at an extremely low flow speed and flows through an inclined plate area, and the phosphating slag is separated from the conical tank under the dual effects of gravity settling and inclined plate blocking and pressing. A slag-rich tank solution at the bottom of the phosphating precipitation tank is pumped into a plate-and-frame filter press by a delivery pump, the slag-rich phosphating solution is filtered by a filter cloth, the clear solution flows out of a concealed pipe and returns to the phosphating tank, phosphating slag is intercepted in a plate frame and continuously accumulated, and when a certain degree is reached, the resistance is increased, and the pressure is increased; the pressure sensor controls the delivery pump to stop liquid supply, the first valve is manually closed, the compressed air second valve is opened, dewatering and blow-drying are conducted, and the content of phosphating liquid in a filter cake is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of slag removal, in particular to an economical phosphating slag removal system. Background Art

[0002] Phosphating treatment of metal surfaces before painting can significantly improve the adhesion and corrosion resistance of the coating, so it has been widely used in many industries. Phosphate film, as the base layer of electrophoretic painting, has been used almost 100%. The generation of phosphating slag is inevitable during the phosphating process. If too much phosphating slag is not removed from the bath in time, it will not only pollute the phosphating solution and shorten its service life, but also adhere to the surface of the coated parts and affect the quality of the phosphating film; for the injection system, too much phosphating slag can easily cause nozzle blockage and pipeline blockage, reduce the heat transfer efficiency of the heat exchange system, and cause it to be unable to use normally. Therefore, feasible measures must be taken to control the phosphating slag content in the bath within a certain range. As a result, the phosphating slag removal system (device) came into being.

[0003] The presence of a large amount of phosphating slag will affect the quality of the phosphating film, reduce the corrosion resistance of the workpiece, increase the rate of defective products, and even affect the normal production. The content of phosphating slag in the phosphating solution cannot be effectively controlled, and thus the quality of the phosphating film cannot be guaranteed. At the same time, the increase in phosphating slag will increase the number of tank dumping and cleaning, increase the load and cost of sewage treatment, and increase the investment in the company's environmental protection facilities. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings in the prior art, the present application aims to provide an economical phosphating slag removal system, comprising a phosphating tank, a conical tank is provided at the lower part of the phosphating tank, the phosphating tank is connected to a first delivery pipe through the conical tank at the lower part, a phosphating liquid delivery pump is installed on the outside of the first delivery pipe, a phosphating precipitation tank is provided at the lower part of the first delivery pipe, a liquid guide pipe is provided inside the phosphating precipitation tank, an inclined plate is provided on the side of the liquid guide pipe, an overflow pipe is provided on the left side of the phosphating precipitation tank, a delivery pump is provided at the lower part of the phosphating precipitation tank, a second delivery pipe is provided inside the delivery pump, a first valve is provided outside the second delivery pipe, a second valve is provided at the upper part of the second delivery pipe, a pressure sensor is provided on the side of the second valve, a filter cloth is provided on the side of the second delivery pipe, a plate frame is provided at the lower part of the filter cloth, bolts are provided on the upper part of the plate frame, a plate and frame filter press is installed at the lower part of the plate frame, a concealed pipe is provided on the side of the plate frame, and the plate and frame filter press is connected to the phosphating tank through a concealed pipe installed on the side of the plate frame.

[0005] Preferably, the conical groove is opened below the phosphating groove, the first delivery pipe is connected below the conical groove, and the phosphating liquid delivery pump is installed on the outer wall of the first delivery pipe.

[0006] Preferably, the phosphating precipitation tank is opened below the first conveying pipe, the liquid guide pipe is installed on the inner wall of the phosphating precipitation tank, the inclined plate is installed on one side of the liquid guide pipe, a plurality of inclined plates are provided, and the overflow pipe is connected to one end of the phosphating precipitation tank.

[0007] Preferably, the delivery pump is installed on one side of the lower end of the phosphating precipitation tank, the second delivery pipe is connected to one side of the delivery pump, the first valve is installed on the outer wall of the second delivery pipe, the second valve is installed above the second delivery pipe, and the pressure sensor is installed on one side of the second valve.

[0008] Preferably, the filter cloth is installed on one side of the second conveying pipe, the plate frame is installed below the filter cloth, the bolts are threadedly connected to the top of the plate frame, the plate and frame filter press is installed below the plate frame, and the concealed pipe is connected to the left side of the plate frame.

[0009] Beneficial effects:

[0010] When the economical phosphating slag removal system is in use, the phosphating slag is initially precipitated and concentrated in the conical tank of the phosphating tank, and is transported to the phosphating precipitation tank by the phosphating liquid delivery pump, enters the bottom of the phosphating precipitation tank through the specially designed liquid guide pipe opening, and then slowly rises at an extremely low flow rate and flows through the inclined plate area. The phosphating slag quickly sinks to the bottom of the cone under the dual effects of gravity sedimentation and inclined plate pressure, and the clear liquid formed on the upper part flows back to the phosphating tank through the overflow pipe. The slag-rich tank liquid at the bottom of the phosphating precipitation tank is pumped into the plate and frame filter press by the delivery pump, filtered by the filter cloth, and the clear liquid flows out from the dark pipe back to the phosphating tank, and the phosphating slag is It is trapped in the plate and frame and accumulates continuously. When it reaches a certain level, the resistance becomes larger and the pressure increases. The pressure sensor controls the delivery pump to stop supplying liquid, the first valve is closed manually, and the second valve of compressed air is opened for dehydration and drying to reduce the content of phosphating liquid in the filter cake. After drying, the second valve is closed, and the clamping bolts of the plate and frame are opened manually to remove the phosphating slag in the plate and frame. After washing the plate and frame, it is reinstalled and compressed to prepare for the next working cycle. Compared with the paper belt filter, the plate and frame filter press has the advantages of large filtration area and less water content in the phosphating slag obtained, thus avoiding unnecessary waste of phosphating liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a front structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the plate frame viewed from above of the utility model.

[0015] In the figure: 1, phosphating tank; 2, conical tank; 3, first delivery pipe; 4, phosphating liquid delivery pump; 5, phosphating precipitation tank; 501, inclined plate; 6, liquid guide pipe; 7, overflow pipe; 8, delivery pump; 801, first valve; 802, second valve; 9, second delivery pipe; 901, pressure sensor; 10, filter cloth; 11, plate and frame filter press; 11-1, plate and frame; 11-2, bolts; 12, concealed pipe. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0017] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0018] See also Figure 1-3 An economical phosphating slag removal system comprises a phosphating tank 1, a conical tank 2 is provided at the bottom of the phosphating tank 1, the phosphating tank 1 is connected to a first conveying pipe 3 through the conical tank 2 at the bottom, a phosphating liquid conveying pump 4 is arranged outside the first conveying pipe 3, a phosphating precipitation tank 5 is provided at the bottom of the first conveying pipe 3, a liquid guide pipe 6 is provided inside the phosphating precipitation tank 5, a sloping plate 501 is provided on the side of the liquid guide pipe 6, an overflow pipe 7 is provided on the left side of the phosphating precipitation tank 5, a conveying pump 8 is provided at the bottom of the phosphating precipitation tank 5, a second conveying pipe 9 is provided inside the conveying pump 8, and the second A first valve 801 is provided on the outside of the delivery pipe 9, a second valve 802 is provided on the upper part of the second delivery pipe 9, a pressure sensor 901 is provided on the side of the second valve 802, a filter cloth 10 is provided on the side of the second delivery pipe 9, a plate frame 11-1 is provided at the lower part of the filter cloth 10, a bolt 11-2 is provided on the upper part of the plate frame 11-1, a plate and frame filter press 11 is installed at the lower part of the plate frame 11-1, a concealed pipe 12 is provided on the side of the plate frame 11-1, and the plate and frame filter press 11 is connected with the phosphating tank 1 through the concealed pipe 12 installed on the side of the plate frame 11-1.

[0019] The conical tank 2 is opened below the phosphating tank 1 , the first delivery pipe 3 is connected below the conical tank 2 , and the phosphating liquid delivery pump 4 is installed on the outer wall of the first delivery pipe 3 .

[0020] Among them, the phosphating precipitation tank 5 is opened below the first conveying pipe 3, the liquid guide pipe 6 is installed on the inner wall of the phosphating precipitation tank 5, the inclined plate 501 is installed on one side of the liquid guide pipe 6, and there are several inclined plates 501. The overflow pipe 7 is connected to one end of the phosphating precipitation tank 5.

[0021] Among them, the delivery pump 8 is installed on one side of the lower end of the phosphating precipitation tank 5, the second delivery pipe 9 is connected to one side of the delivery pump 8, the first valve 801 is installed on the outer wall of the second delivery pipe 9, the second valve 802 is installed above the second delivery pipe 9, and the pressure sensor 901 is installed on one side of the second valve 802.

[0022] Among them, the filter cloth 10 is installed on one side of the second conveying pipe 9, the plate frame 11-1 is installed below the filter cloth 10, the bolt 11-2 is threadedly connected to the top of the plate frame 11-1, the plate and frame filter press 11 is installed below the plate frame 11-1, and the concealed pipe 12 is connected to the left side of the plate frame 11-1.

[0023] When in use, the phosphating slag is initially precipitated and concentrated in the conical groove 2 of the phosphating tank 1, and is transported to the phosphating precipitation tank 5 by the phosphating liquid delivery pump 4, and enters the bottom of the phosphating precipitation tank 5 through the opening of the specially designed liquid guide pipe 6, and then slowly rises at an extremely low flow rate and flows through the inclined plate 501 area. The phosphating slag quickly sinks to the bottom of the cone under the dual effects of gravity sedimentation and the pressure resistance of the inclined plate 501. The clear liquid formed on the upper part flows back to the phosphating tank 1 through the overflow pipe 7. The slag-rich tank liquid at the bottom of the phosphating precipitation tank 5 is pumped into the plate and frame filter press 11 by the delivery pump 8, and filtered by the filter cloth 10. The clear liquid flows out from the dark pipe 12 and returns to the phosphating tank 1, and the phosphating slag is retained in the plate frame 11-1, and continuously accumulates. When the pressure reaches a certain level, the resistance becomes larger and the pressure rises. The pressure sensor 901 controls the delivery pump 8 to stop supplying liquid, the first valve 801 is closed manually, and the second valve 802 of compressed air is opened for dehydration and drying to reduce the content of phosphating liquid in the filter cake. After drying, the second valve 802 is closed, and the clamping bolts 11-2 of the plate frame 11-1 are opened manually to remove the phosphating slag in the plate frame 11-1. After washing the plate frame 11-1, it is reinstalled and clamped to prepare for the next working cycle. Compared with the paper belt filter, the plate and frame filter press 11 has the advantages of large filtering area and less water content in the obtained phosphating slag, thereby avoiding unnecessary waste of phosphating liquid.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. An economical phosphating slag removal system, comprising a phosphating tank (1), characterized in that: The phosphating tank (1) is provided with a conical groove (2) at the bottom, and the phosphating tank (1) is connected to a first delivery pipe (3) through the conical groove (2) at the bottom. A phosphating liquid delivery pump (4) is installed on the outside of the first delivery pipe (3). A phosphating precipitation tank (5) is provided at the bottom of the first delivery pipe (3). A liquid guide pipe (6) is provided inside the phosphating precipitation tank (5). An inclined plate (501) is provided on the side of the liquid guide pipe (6). An overflow pipe (7) is provided on the left side of the phosphating precipitation tank (5). A delivery pump (8) is provided at the bottom of the phosphating precipitation tank (5). A second delivery pipe (9) is provided inside the delivery pump (8). The second delivery pipe (9) is provided on the outside. A first valve (801) is provided, a second valve (802) is provided on the upper part of the second delivery pipe (9), a pressure sensor (901) is provided on the side of the second valve (802), a filter cloth (10) is provided on the side of the second delivery pipe (9), a plate frame (11-1) is provided on the lower part of the filter cloth (10), a bolt (11-2) is provided on the upper part of the plate frame (11-1), a plate and frame filter press (11) is installed on the lower part of the plate frame (11-1), a concealed pipe (12) is provided on the side of the plate frame (11-1), and the plate and frame filter press (11) is connected to the phosphating tank (1) through the concealed pipe (12) installed on the side of the plate frame (11-1).

2. An economical phosphating slag removal system according to claim 1, characterized in that: The conical trough (2) is opened below the phosphating trough (1), the first delivery pipe (3) is connected below the conical trough (2), and the phosphating liquid delivery pump (4) is installed on the outer wall of the first delivery pipe (3).

3. An economical phosphating slag removal system according to claim 1, characterized in that: The phosphating precipitation tank (5) is opened below the first conveying pipe (3), the liquid guide pipe (6) is installed on the inner wall of the phosphating precipitation tank (5), the inclined plate (501) is installed on one side of the liquid guide pipe (6), and a plurality of inclined plates (501) are provided. The overflow pipe (7) is connected to one end of the phosphating precipitation tank (5).

4. An economical phosphating slag removal system according to claim 1, characterized in that: The delivery pump (8) is installed on one side of the lower end of the phosphating precipitation tank (5), the second delivery pipe (9) is connected to one side of the delivery pump (8), the first valve (801) is installed on the outer wall of the second delivery pipe (9), the second valve (802) is installed above the second delivery pipe (9), and the pressure sensor (901) is installed on one side of the second valve (802).

5. An economical phosphating slag removal system according to claim 1, characterized in that: The filter cloth (10) is installed on one side of the second conveying pipe (9), the plate frame (11-1) is installed below the filter cloth (10), the bolts (11-2) are threadedly connected to the top of the plate frame (11-1), the plate and frame filter press (11) is installed below the plate frame (11-1), and the concealed pipe (12) is connected to the left side of the plate frame (11-1).

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