CN218435090U - Greasy dirt processing apparatus in galvanizing bath - Google Patents

Abstract

The utility model discloses an greasy dirt processing apparatus in galvanizing bath, it is including the mechanism and the first supporting component of stewing, the mechanism of stewing is including a section of thick bamboo, feed liquor pipe, first return pipe, row's of oil pipe and first water pump of stewing, it has a chamber of stewing to stew in the section of thick bamboo, the one end of feed liquor pipe with the chamber intercommunication of stewing, the other end and the galvanizing bath intercommunication of feed liquor pipe, be provided with first check valve on the feed liquor pipe, the one end of first return pipe with the chamber intercommunication of stewing, be provided with the second check valve on the first return pipe, it is located to arrange the oil pipe the higher authority of feed liquor pipe, arrange the one end of oil pipe with the chamber intercommunication of stewing, the import of first water pump with the other end intercommunication of first return pipe. The beneficial effects of the utility model of this year are: can reduce the replacement times of the electroplating solution and reduce the labor intensity.

Description

Greasy dirt processing apparatus in galvanizing bath

Technical Field

The utility model relates to an electroplating device technical field especially relates to an greasy dirt processing apparatus in galvanizing bath.

Background

In a galvanizing production line for processing automobile parts, a plating bath is needed, a workpiece is placed in the plating bath and is electroplated by electroplating solution in the plating bath, and a plurality of oil stains are generated on the surface of the electroplating solution and influence the electroplating effect, so that the electroplating solution needs to be replaced at intervals.

The utility model discloses an application number 202021772660.9's china utility model discloses a galvanizing bath, including the cell body, set up a plurality of hot tanks along the notch edge in the cell body notch, the hot tank sets up out the zincium door, zinc liquid flows in the cell body through going out the zincium door in the hot tank, the cell body below sets up the concrete foundation, set up natural gas burner between concrete foundation and the cell body, set up the lid in a plurality of hot tank inboards, the cell body inner wall rigid coupling a plurality of cab apron of crossing, cross the cab apron and go out the zincium door with the hot tank and correspond, the cell body bottom sets up the arc arch, the arc arch is located a plurality of cab apron free ends under.

Above-mentioned zinc liquid in the galvanizing bath is at the in-process that carries out the galvanizing operation to the workpiece surface, because the influence of multifactor, can lead to the zinc liquid surface in the galvanizing bath to float a lot of greasy dirt, if do not clear away the greasy dirt, these greasy dirt have partial adhesion on the workpiece surface, influence and electroplate the quality, adopt artifical regularly to salvage the greasy dirt in the galvanizing bath at present, because the greasy dirt floats on whole zinc liquid surface, the manual work is salvaged hardly to salvage totally, the greasy dirt gets rid of the effect relatively poor, at last still need frequent change zinc liquid, the number of times that leads to changing the zinc liquid is too frequent, not only delay the electroplating progress, workman's intensity of labour has also been increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide an greasy dirt processing apparatus in galvanizing bath, solve among the prior art galvanizing bath and lack the corresponding device that handles to zinc liquid superficial floated greasy dirt, lead to changing the number of times of plating solution too frequently, not only hinder the electroplating progress, also increased workman's intensity of labour's technical problem.

In order to achieve the technical purpose, the technical scheme of the utility model provides an oil stain treatment device in galvanizing bath, include:

the standing mechanism comprises a standing barrel, a liquid inlet pipe, a first liquid return pipe, an oil discharge pipe and a first water pump, wherein a standing cavity is arranged in the standing barrel, one end of the liquid inlet pipe is communicated with the standing cavity, the other end of the liquid inlet pipe is communicated with a zinc plating bath, a first one-way valve is arranged on the liquid inlet pipe, one end of the first liquid return pipe is communicated with the standing cavity, a second one-way valve is arranged on the first liquid return pipe, the oil discharge pipe is positioned above the liquid inlet pipe, one end of the oil discharge pipe is communicated with the standing cavity, an inlet of the first water pump is communicated with the other end of the first liquid return pipe, and an outlet of the first water pump is communicated with the zinc plating bath;

first supporting component, first supporting component includes first supporting disk and first supporting driving piece, first supporting disk set up in the intracavity of stewing and with a section of thick bamboo inner wall sliding seal connects stews, first supporting driving piece the output with first supporting disk fixed connection is used for the drive first supporting disk reciprocates.

Further, the first liquid return pipe is positioned below the liquid inlet pipe.

Further, greasy dirt processing apparatus in the galvanizing bath still includes spacing subassembly, spacing subassembly includes spacing dish and spacing driving piece, spacing dish set up in the intracavity of stewing and with a section of thick bamboo inner wall sliding connection stews, spacing dish is located above the first supporting disk, the output of spacing driving piece with spacing dish fixed connection is used for the drive spacing dish reciprocates.

Further, greasy dirt processing apparatus in the galvanizing tank still includes a filter-pressing mechanism, the filter-pressing mechanism includes urceolus, well section of thick bamboo, inner tube, a plurality of connecting pipe, second return liquid pipe, row's material pipe and second water pump, well section of thick bamboo fixed mounting in the urceolus, the inner tube fixed mounting in the well section of thick bamboo, form a pressure filtration chamber in the inner tube, the inner tube with form the storage cavity between the well section of thick bamboo, well section of thick bamboo with form the stock solution chamber between the urceolus, a plurality of the one end of connecting pipe respectively with the filter-pressing chamber intercommunication, a plurality of the other end of connecting pipe respectively with the stock solution chamber intercommunication, the second return liquid pipe one end with stock solution chamber bottom intercommunication, be provided with first valve on the second return liquid pipe, arrange the one end of material pipe with the storage cavity bottom intercommunication, be provided with the second valve on the row's material pipe, the import of second water pump with the other end intercommunication of second return liquid pipe, the export and the bin outlet of second water pump intercommunication, an annular mouth has been seted up on the section of thick bamboo wall of inner tube, the bin outlet is located the below of connecting pipe.

Further, the oil stain treatment device in the galvanizing tank further comprises a second supporting assembly, the second supporting assembly comprises a second supporting disk and a second supporting driving piece, the second supporting disk is arranged in the filter pressing cavity and is in sliding connection with the inner wall of the inner cylinder, and the output end of the second supporting driving piece is fixedly connected with the second supporting disk and is used for driving the second supporting disk to move up and down.

Further, greasy dirt processing apparatus in the galvanizing tank still includes pressure assembly, pressure assembly includes pressure disc and pressure driving spare, the pressure disc set up in the filter-pressing intracavity and with inner tube inner wall sliding connection, the pressure disc is located above the second supporting disk, the output of pressure driving spare with the pressure disc fixed connection is used for the drive the pressure disc reciprocates.

Furthermore, a plurality of filter holes are formed in the wall of the inner cylinder and are located above the discharge port, the aperture of each filter hole is smaller than the particle size of oil stains and impurities, and one end of each connecting pipe is communicated with the filter pressing cavity through the corresponding filter hole.

Furthermore, a plurality of the connecting pipe sets up in the slope, the high-end department of connecting pipe with the filtration pore intercommunication, the low-end department of connecting pipe with stock solution chamber intercommunication.

Further, the oil extraction pipe slope sets up, the high-end department of oil extraction pipe with the chamber intercommunication of stewing, the low-end department of oil extraction pipe with the filter-pressing chamber intercommunication.

Furthermore, first support driving piece, spacing driving piece, second support driving piece and pressure driving piece are the cylinder.

Compared with the prior art, the beneficial effects of the utility model include: closing a second one-way valve on a first liquid return pipe, operating the first support driving part to drive a first support disc to slide along the inner side wall of a standing barrel in a standing cavity, moving the first support disc to the lower side of a liquid inlet pipe, opening the first one-way valve on the liquid inlet pipe, allowing electroplating solution on the surface of a galvanizing bath to enter the standing cavity on the upper portion of the first support disc along the liquid inlet pipe, closing the first one-way valve, allowing the electroplating solution in the standing barrel to stand for a period of time, wherein the density of oil stains is greater than that of the electroplating solution, so that the oil stains float on the liquid level, operating the first support driving part to drive the first support disc to move upwards until the surface of the electroplating solution just overflows from the pipe opening of the oil discharge pipe, discharging the oil stains on the surface of the electroplating solution along the oil discharge pipe, operating the first support driving part to drive the first support disc to move downwards after the oil stains are completely discharged, opening the second one-way valve and the first water pump, pumping the electroplating solution back into the electroplating bath along the first water return pipe, realizing recycling of the electroplating bath, and reducing the labor intensity of electroplating solution.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of an oil stain treatment device in a galvanizing bath provided by the utility model;

fig. 2 is a schematic structural diagram of an oil stain treatment device in a galvanizing bath provided by the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an oil stain treatment device in a galvanizing bath, the structure of which is shown in figure 1-figure 2, comprising a standing mechanism 1 and a first supporting component 2, wherein the standing mechanism 1 comprises a standing barrel 11, a liquid inlet pipe 12, a first liquid return pipe 13, an oil discharge pipe 14 and a first water pump 15, a standing cavity 111 is arranged in the standing barrel 11, one end of the liquid inlet pipe 12 is communicated with the standing cavity 111, the other end of the liquid inlet pipe 12 is communicated with the galvanizing bath, a first check valve 121 is arranged on the liquid inlet pipe 12, one end of the first liquid return pipe 13 is communicated with the standing cavity 111, a second check valve 131 is arranged on the first liquid return pipe 13, the oil discharge pipe 14 is positioned above the liquid inlet pipe 12, one end of the oil discharge pipe 14 is communicated with the standing cavity 111, the inlet of the first water pump 15 is communicated with the other end of the first liquid return pipe 13, and the outlet of the first water pump 15 is communicated with the galvanizing bath; first supporting component 2 includes first supporting disk 21 and first supporting drive piece 22, first supporting disk 21 set up in the chamber 111 of stewing and with a section of thick bamboo 11 inner wall sliding seal that stews connects, first supporting drive piece 22's output with first supporting disk 21 fixed connection is used for the drive first supporting disk 21 reciprocates.

Closing the second check valve 131 on the first backflow pipe 13, operating the first support driving member 22 to make the first support driving member 22 drive the first support disc 21 to slide along the inner side wall of the standing cylinder 11 in the standing cavity 111, so that the first support disc 21 moves to the lower side of the liquid inlet pipe 12, then opening the first check valve 121 on the liquid inlet pipe 12, so that the electroplating solution on the surface of the electroplating bath enters the standing cavity 111 on the upper portion of the first support disc 21 along the liquid inlet pipe 12, then closing the first check valve 121 to make the electroplating solution in the standing cylinder 11 stand for a period of time, because the density of the oil stains is greater than that of the electroplating solution, at this time, the oil stains float on the liquid surface, operating the first support driving member 22 to make the first support disc 21 drive the first support disc 21 to move upwards by operating the first support driving member 22 until the surface of the electroplating solution just can overflow from the orifice of the oil discharge pipe 14, at this time, the oil stains on the surface of the electroplating solution can be discharged along the oil discharge pipe 14, after the oil stains are completely discharged, operating the first support driving member 22 to make the first support driving member 22 drive the electroplating solution to be capable of reducing the electroplating bath circulation cycle, and reducing the intensity of the electroplating solution in the electroplating bath, and reducing the whole electroplating bath circulation process, and reducing the electroplating solution circulation time of the electroplating solution circulation process, and reducing the electroplating solution circulation time, and reducing the electroplating solution circulation process of the electroplating bath by using the first support driving member 15.

As a preferred embodiment, referring to fig. 1 and 2, the first liquid return pipe 13 is located below the liquid inlet pipe 12 to facilitate the backflow of the plating solution from the first liquid return pipe 13 into the plating bath, and the first support driving member 22 is fixedly installed at the outer bottom of the standing barrel 11 to facilitate the first support driving member 22 to drive the first support disc 21 to move.

As a preferred embodiment, referring to fig. 1 and 2, the oil stain treatment apparatus in a galvanizing bath further includes a limiting component 3, where the limiting component 3 includes a limiting disc 31 and a limiting driving member 32, the limiting disc 31 is disposed in the standing cavity 111 and is slidably connected to an inner wall of the standing cylinder 11, the limiting disc 31 is located above the first supporting disc 21, an output end of the limiting driving member 32 is fixedly connected to the limiting disc 31 for driving the limiting disc 31 to move up and down, the limiting driving member 32 is fixedly mounted at an outer top of the standing cylinder 11, and before an electroplating solution enters the standing cavity 111, the limiting driving member 32 is operated to enable the limiting driving member 32 to drive the limiting disc 31 to move down to a lower side of the oil drain pipe 14, so that the electroplating solution is prevented from entering the standing cavity 111 at an upper portion of the first supporting disc 21, and the electroplating solution is easily discharged along the oil drain pipe 14 without standing due to poor control of the amount.

As a preferred embodiment, referring to fig. 1 and 2, the oil stain treatment device in the galvanizing tank further includes a filter pressing mechanism 4, the filter pressing mechanism 4 includes an outer cylinder 41, a middle cylinder 42, an inner cylinder 43, a plurality of connecting pipes 44, a second liquid return pipe 45, a discharge pipe 46 and a second water pump 47, the middle cylinder 42 is fixedly installed in the outer cylinder 41, the inner cylinder 43 is fixedly installed in the middle cylinder 42, a filter pressing chamber 431 is formed in the inner cylinder 43, a storage chamber 421 is formed between the inner cylinder 43 and the middle cylinder 42, a liquid storage chamber 411 is formed between the middle cylinder 42 and the outer cylinder 41, one end of each of the plurality of connecting pipes 44 is respectively communicated with the filter pressing chamber 431, the other end of each of the plurality of connecting pipes 44 is respectively communicated with the liquid storage chamber 411, one end of the second liquid return pipe 45 is communicated with the bottom of the liquid storage chamber 411, the second liquid return pipe 45 is provided with a first valve 451, one end of the discharge pipe 46 is communicated with the bottom of the storage cavity 421, the discharge pipe 46 is provided with a second valve 461, an inlet of the second water pump 47 is communicated with the other end of the second liquid return pipe 45, an outlet of the second water pump 47 is communicated with the galvanizing bath, the wall of the inner cylinder 43 is provided with an annular discharge port 432, the discharge port 432 is positioned below the connecting pipe 44, the oil stain discharged from the oil discharge pipe 14 also contains a large amount of electroplating solution and impurities, the mixed solution enters the pressure filtering cavity 431 along the oil discharge pipe 14 and is further filtered, the filtered impurities and the oil stain enter the storage cavity 421, and the pure electroplating solution enters the storage cavity 411 and is pumped back to the electroplating bath along the second liquid return pipe 45 by the second water pump 47.

As a preferred embodiment, referring to fig. 1 and fig. 2, the oil stain treatment apparatus in the galvanizing tank further includes a second support assembly 5, where the second support assembly 5 includes a second support plate 51 and a second support driving member 52, the second support plate 51 is disposed in the pressure filtration chamber 431 and is slidably connected to the inner wall of the inner cylinder 43, an output end of the second support driving member 52 is fixedly connected to the second support plate 51 for driving the second support plate 51 to move up and down, the second support driving member 52 is fixedly mounted at an outer bottom portion of the outer cylinder 41, and before oil stains enter the pressure filtration chamber 431, the second support driving member 52 drives the second support plate 51 to move to the discharge port 432 by operating the second support driving member 52, so as to prevent the oil stains from entering the stock storage chamber 421 along the discharge port 432 without further pressure filtration.

As a preferred embodiment, referring to fig. 1 and fig. 2, the oil contamination treatment apparatus in the galvanizing tank further includes a pressure assembly 6, where the pressure assembly 6 includes a pressure disc 61 and a pressure driving member 62, the pressure disc 61 is disposed in the pressure filtering cavity 431 and slidably connected to the inner wall of the inner cylinder 43, the pressure disc 61 is located above the second supporting plate 51, an output end of the pressure driving member 62 is fixedly connected to the pressure disc 61 for driving the pressure disc 61 to move up and down, the pressure driving member 62 is fixedly mounted at an outer top of the outer cylinder 41, when oil contamination enters the pressure filtering cavity 431, the pressure driving member 62 is operated to drive the pressure disc 61 to move down and press the oil contamination on the second supporting plate 51, so that the plating solution in the oil contamination enters the liquid storage cavity 411 along the connecting pipe 44, and the oil contamination and impurities are left in the pressure filtering cavity 431.

As a preferred embodiment, referring to fig. 2, a plurality of filtering holes 433 are further formed in the wall of the inner cylinder 43, the filtering holes 433 are located above the discharge opening 432, the aperture of each filtering hole 433 is smaller than the particle size of oil stains and impurities, and one end of each of the plurality of connecting pipes 44 is respectively communicated with the filter pressing cavity 431 through each corresponding filtering hole 433, so that the filtering holes 433 can block the oil stains and the impurities.

As a preferred embodiment, referring to fig. 2, a plurality of the connecting pipes 44 are obliquely arranged, the high end of each connecting pipe 44 is communicated with the filtering hole 433, and the low end of each connecting pipe 44 is communicated with the liquid storage chamber 411, so that the plating solution can enter the liquid storage chamber 411 along the connecting pipes 44.

As a preferred embodiment, referring to fig. 2, the oil drain pipe 14 is disposed obliquely, a high end of the oil drain pipe 14 is communicated with the standing cavity 111, and a low end of the oil drain pipe 14 is communicated with the filter pressing cavity 431, so that oil stains can enter the filter pressing cavity 431 along the oil drain pipe 14.

In a preferred embodiment, the first support driver 22, the limit driver 32, the second support driver 52 and the pressure driver 62 are all pneumatic cylinders.

For better understanding of the present invention, the following detailed description is made with reference to fig. 1-2 for the working principle of the technical solution of the present invention:

closing the second one-way valve 131 on the first fluid return pipe 13, operating the first support driving member 22 and the limiting driving member 32 to make the first support driving member 22 drive the first support disc 21 to slide along the inner side wall of the standing cylinder 11 in the standing chamber 111, moving the first support disc 21 to the lower side of the fluid inlet pipe 12, the limiting driving member 32 driving the limiting disc 31 to move down to the lower side of the fluid outlet pipe 14, so as to prevent the plating solution from entering the standing chamber 111 on the upper portion of the first support disc 21, which is easy to discharge the plating solution along the fluid outlet pipe 14 without standing due to poor control of the amount of the plating solution, opening the first one-way valve 121 on the fluid inlet pipe 12, allowing the plating solution on the surface of the plating bath to enter the standing chamber 111 on the upper portion of the first support disc 21 along the fluid inlet pipe 12, then closing the first one-way valve 121 to allow the plating solution in the standing cylinder 11 to stand for a period of time, since the density of the plating solution is higher than that of the plating solution, at the surface of the plating solution, floating on the surface of the plating solution, by operating the first support driving member 22 and the limiting driving member 32 to make the first fluid return pump 32 drive the first support driving member 32 to move up along the fluid return pipe 31 to the fluid return pipe 31, and the first support driving member 32, and the overflow pipe 31, and the overflow pipe 14, when the first support driving member 31 is operated to move along the first one-way valve 31, and the drain pipe 14, and the drain pipe 31, and the drain pipe 14, simultaneously, before oil stains enter the filter pressing cavity 431, the second support driving part 52 is controlled to drive the second support disc 51 to move to the upper surface of the discharge port 432, so that the oil stains are prevented from entering the storage cavity 421 along the discharge port 432 without being subjected to further filter pressing, when the oil stains enter the filter pressing cavity 431, the pressure driving part 62 is controlled to drive the pressure disc 61 to move downwards and press the oil stains on the second support disc 51, so that electroplating solution in the oil stains enters the connecting pipe 44 along the filter hole 433, finally enters the storage cavity 411, the filter hole 433 blocks and retains electroplating solution in the filter pressing cavity 431, the electroplating solution in the second support disc 51 enters the storage cavity 411 and is pumped back to the electroplating pool along the second liquid return pipe 45, then the second support driving part 52 is controlled to drive the second support disc 51 to move downwards to the lower surface of the storage cavity 432, the pressure driving part 62 is controlled to drive the second support disc 62 to drive the second support disc 47 to pump back to the electroplating pool, and the oil stains are removed from the storage cavity 421, so that the oil stains are removed from the electroplating solution in the storage cavity 51, the electroplating working cycle is reduced, and the oil stains are removed from the electroplating solution in the discharge port 432, and the electroplating process is also reduced, and the electroplating process is realized.

The utility model provides a pair of greasy dirt processing apparatus in galvanizing bath has following beneficial effect:

(1) By operating the first support driving member 22 and the limit driving member 32, the first support driving member 22 drives the first support disc 21 to slide along the inner side wall of the standing barrel 11 in the standing chamber 111, the first support disc 21 moves to the lower side of the liquid inlet pipe 12, and the limit driving member 32 drives the limit disc 31 to move downwards to the lower side of the oil discharge pipe 14, so that when electroplating solution enters the standing chamber 111 at the upper part of the first support disc 21, the electroplating solution is easily discharged along the oil discharge pipe 14 without standing due to poor control of the feeding amount;

(2) When the oil contamination is completely drained into the filter pressing cavity 431, the second check valve 131 and the first water pump 15 are opened, the plating solution is pumped back into the plating bath along the first backflow pipe 13 by the first water pump 15, and simultaneously before the oil contamination enters the filter pressing cavity 431, the second support driving member 52 is operated to drive the second support disc 51 to move to the upper side of the discharge port 432, so that the oil contamination is prevented from entering the storage cavity 421 along the discharge port 432 without further filter pressing, when the oil contamination enters the filter pressing cavity 431, the pressure driving member 62 is operated to drive the pressure disc 61 to move downwards and press the oil contamination on the second support disc 51, so that the plating solution in the oil contamination enters the connecting pipe 44 along the filter hole 433, finally enters the storage cavity 411, the oil contamination and impurities are blocked by the filter hole 433 and left in the filter pressing cavity 431, and pure plating solution enters the storage cavity 411 and is pumped back into the second backflow pipe 433, so that the waste of the plating solution can be recovered by the second backflow pipe 47;

(3) The utility model discloses in, realized the recycling of plating solution, at the whole in-process that the greasy dirt was clear away, not influenced the electroplating work of work piece in the plating bath, also can reduce the change number of times of plating solution simultaneously, reduced intensity of labour.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an greasy dirt processing apparatus in galvanizing bath which characterized in that includes:

the standing mechanism comprises a standing barrel, a liquid inlet pipe, a first liquid return pipe, an oil discharge pipe and a first water pump, wherein a standing cavity is arranged in the standing barrel, one end of the liquid inlet pipe is communicated with the standing cavity, the other end of the liquid inlet pipe is communicated with a zinc plating bath, a first one-way valve is arranged on the liquid inlet pipe, one end of the first liquid return pipe is communicated with the standing cavity, a second one-way valve is arranged on the first liquid return pipe, the oil discharge pipe is positioned above the liquid inlet pipe, one end of the oil discharge pipe is communicated with the standing cavity, an inlet of the first water pump is communicated with the other end of the first liquid return pipe, and an outlet of the first water pump is communicated with the zinc plating bath;

first supporting component, first supporting component includes first supporting disk and first supporting driving piece, first supporting disk set up in the intracavity of stewing and with a section of thick bamboo inner wall sliding seal connects stews, first supporting driving piece the output with first supporting disk fixed connection is used for the drive first supporting disk reciprocates.

2. The oil stain treatment apparatus in a galvanizing bath according to claim 1, wherein the first liquid return pipe is positioned below the liquid inlet pipe.

3. The oil stain treatment device in the galvanizing bath according to claim 2, further comprising a limiting component, wherein the limiting component comprises a limiting disc and a limiting driving piece, the limiting disc is arranged in the standing cavity and is in sliding connection with the inner wall of the standing barrel, the limiting disc is located on the first supporting disc, and the output end of the limiting driving piece is fixedly connected with the limiting disc and is used for driving the limiting disc to move up and down.

4. The device for treating the oil stain in the galvanizing bath according to claim 3, further comprising a filter pressing mechanism, wherein the filter pressing mechanism comprises an outer cylinder, a middle cylinder, an inner cylinder, a plurality of connecting pipes, a second liquid return pipe, a material discharging pipe and a second water pump, the middle cylinder is fixedly arranged in the outer cylinder, the inner cylinder is fixedly arranged in the middle cylinder, a filter pressing cavity is formed in the inner cylinder, a material storage cavity is formed between the inner cylinder and the middle cylinder, a liquid storage cavity is formed between the middle cylinder and the outer cylinder, one ends of the plurality of connecting pipes are respectively communicated with the filter pressing cavity, the other ends of the plurality of connecting pipes are respectively communicated with the liquid storage cavity, one end of the second liquid return pipe is communicated with the bottom of the liquid storage cavity, a first valve is arranged on the second liquid return pipe, one end of the material discharging pipe is communicated with the bottom of the material storage cavity, a second valve is arranged on the material discharging pipe, an inlet of the second water pump is communicated with the other end of the second liquid return pipe, an outlet of the second water pump is communicated with the zinc bath wall, an annular opening is arranged on the inner cylinder, and the material discharging opening is positioned below the connecting pipes.

5. The oil stain treatment device in the galvanizing bath according to claim 4, further comprising a second support assembly, wherein the second support assembly comprises a second support plate and a second support driving member, the second support plate is arranged in the filter pressing cavity and is in sliding connection with the inner wall of the inner cylinder, and an output end of the second support driving member is fixedly connected with the second support plate and is used for driving the second support plate to move up and down.

6. The oil stain treatment device in the galvanizing bath according to claim 5, further comprising a pressure assembly, wherein the pressure assembly comprises a pressure disc and a pressure driving piece, the pressure disc is arranged in the filter pressing cavity and is in sliding connection with the inner wall of the inner cylinder, the pressure disc is positioned on the second supporting disc, and the output end of the pressure driving piece is fixedly connected with the pressure disc and is used for driving the pressure disc to move up and down.

7. The oil stain treatment device in the galvanizing bath according to claim 4, wherein a plurality of filter holes are further formed in the wall of the inner cylinder, the filter holes are located above the discharge port, the aperture of each filter hole is smaller than the particle size of oil stains and impurities, and one end of each of the plurality of connecting pipes is communicated with the filter pressing cavity through each corresponding filter hole.

8. The oil stain treatment device in the galvanizing bath according to claim 7, wherein a plurality of the connecting pipes are obliquely arranged, the high ends of the connecting pipes are communicated with the filtering holes, and the low ends of the connecting pipes are communicated with the liquid storage cavity.

9. The oil stain treatment device in the galvanizing bath according to claim 4, wherein the oil discharge pipe is obliquely arranged, the high end of the oil discharge pipe is communicated with the standing cavity, and the low end of the oil discharge pipe is communicated with the filter pressing cavity.

10. The oil stain treatment device in the galvanizing bath according to claim 6, wherein the first supporting driving member, the limiting driving member, the second supporting driving member and the pressure driving member are all air cylinders.

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