Oil removal device for strip liquor obtained after extraction of electroplating sludge leachate

Abstract

The utility model provides a deoiling device for strip liquor extracted by using electroplating sludge leachate. The oil removal device for the strip liquor extracted by using the electroplating sludge leachate comprises a mounting plate. The two groups of clarification tanks are connected in series at the top of the mounting plate, and the partition plates are mounted in the clarification tanks, so that suspension liquid and clarified liquid in the strip liquor are layered due to different densities after the strip liquor is discharged into the clarification tanks, and suspension oil floats to the top of the clarified liquid; at the moment, an oil pumping pipe can extend into the clarifying tank through a through hole formed in the upper end of the front surface of the clarifying tank to pump suspended oil, and the oil pumping pipe can be prevented from excessively extending into clarified liquid due to the installation of a partition plate, so that the oil pumping pipe can only pump the suspended oil above the partition plate; the two groups of clarifying tanks are connected in series, so that most of suspended oil in the strip liquor can be extracted, the condition of rapid saturation when the strip liquor is filtered by the oil catcher subsequently is prevented, and the quality of the strip liquor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroplating sludge, and particularly relates to an oil removal device for stripping liquid after extraction with electroplating sludge leaching liquid. Background Art

[0002] Electroplating sludge is a precipitate containing a variety of heavy metal hydroxides produced during the electroplating process. Its treatment and utilization are important issues in environmental protection and resource recovery. During the extraction of electroplating sludge leachate, due to the effect of mechanical stirring, a large amount of organic matter is often entrained in the stripping solution. In order to reduce the organic content in the stripping solution, ensure product quality and meet customer needs, the general process flow adopts a filter press, activated carbon, and fiber series method to remove organic matter. However, since the extraction box is affected by technical operating conditions and solution impurity components, it is easy to cause fluctuations in the operation of the extraction box, resulting in unstable oil content in the output stripping solution, especially entrained with a large amount of suspended oil, which makes the subsequent activated carbon and fiber degreasing very easy to saturate, seriously affecting the degreasing effect. Therefore, it is necessary to provide a degreasing device for stripping solution after extraction with electroplating sludge leachate to solve the above problems. Utility Model Content

[0003] The technical content of the utility model is to provide an oil removal device for stripping liquid after extraction with electroplating sludge leachate.

[0004] In order to solve the above problems, the utility model provides an oil removal device for stripping liquid after extraction with electroplating sludge leachate, comprising a mounting plate, two groups of support plates are symmetrically mounted on the bottom of the mounting plate, a stirring tank is mounted on the left side of the top of the mounting plate, a tank cover is mounted on the top of the stirring tank through a fixing ring, a motor is mounted on the top of the tank cover, a rotating rod is connected to the bottom of the motor, a stirring plate is mounted on the rotating rod, a filling pipe is mounted on the side of the tank cover, a liquid outlet pipe is mounted on the lower right end of the stirring tank, the liquid outlet pipe is connected to a drainage pump through a connecting ring, and the drainage pump The right end of the clarification tank is connected to the connecting pipe arranged on the left side of the clarification tank, connecting pipes are installed on both sides of the clarification tank, a sealing cover is installed on the top of the clarification tank, a guide rod is installed inside the clarification tank, a sliding sleeve is installed on the guide rod, the sliding sleeve is installed at the four corners of the partition, a through groove is opened on the partition, a through hole is opened on the front of the clarification tank and a sealing plug is installed, two groups of clarification tanks are installed on the right side of the top of the mounting plate, a control valve is installed between the two groups of clarification tanks, the right end of one group of clarification tanks on the right side is connected to an oil catcher through a conduit, and a drain pipe is installed on the right side of the oil catcher.

[0005] As a further solution of the present invention, the bottom of the support plate is set to a T-shaped structure, and a group of fixing rings are installed on the outer side of the top of the mixing tank installed on the top left side of the mounting plate, and a group of fixing rings are also installed on the outer side of the bottom of the tank cover. The two groups of fixing rings are fixedly connected by four groups of symmetrical fixing bolts, so that the tank cover is fixedly installed on the top of the mixing tank.

[0006] As a further solution of the present invention, the tank cover is configured as a conical structure, the filling pipe installed on the left side of the tank cover is configured as an upward inclined structure, the filling pipe and the internal space of the tank cover are communicated, a pipe cover is installed on the left end of the filling pipe, the motor is installed on the top of the tank cover through a fixing bolt, a rotating rod installed at the bottom of the motor passes through the tank cover and is rotatably connected to the inner side of the mixing tank, four rows of stirring plates are installed on the rotating rod, each row of stirring plates consists of eight groups of stirring plates, and the stirring plates can be driven to rotate inside the mixing tank by rotating the rotating rod.

[0007] As a further solution of the utility model, a liquid outlet is provided at the lower right end of the stirring tank, in which a liquid outlet pipe is inserted and installed, a group of connecting rings are installed on the outer side of the right end of the liquid outlet pipe, and a group of connecting rings are installed on the outer side of the left end of the drainage pump. The two groups of connecting rings are fixedly connected by six groups of fixing bolts. The right end of the drainage pump is also connected to the connecting pipe arranged on the left side of the left group of clarification tanks in the two groups of clarification tanks through the two groups of connecting rings, so that the stripping liquid produced by stirring in the stirring tank can be introduced into the first group of clarification tanks through the drainage pump.

[0008] As a further solution of the utility model, a group of fixing blocks are installed at the four corners of the bottom of the sealing cover installed on the top of the clarification tank, and a group of fixing blocks are also installed at the four corners of the top of the clarification tank. Two groups of handles are symmetrically installed on the top of the sealing cover, and four groups of guide rods are symmetrically installed at the four corners of the interior of the clarification tank. The tops of the four groups of guide rods are flush with the top of the clarification tank. The four groups of sliding sleeves installed on the four groups of guide rods are at the same height. The four groups of sliding sleeves are respectively installed inside the mounting holes opened at the four corners of the partition. The internal space size of the partition and the clarification tank is the same, and the partition is evenly opened. Nine groups of through grooves are provided, the through hole opened on the front of the clarification tank is located at the upper end of the front of the clarification tank, the connecting pipe installed on the right side of the first group of clarification tanks and the connecting pipe installed on the left side of the second group of clarification tanks are connected through a control valve, the connecting pipe installed on the right side of the second group of clarification tanks and the conduit are connected through two groups of connecting rings, the conduit is set as an L-shaped structure, the bottom of the conduit is installed at the top opening of the oil trap, the oil trap is fixedly installed on the right side of one of the two groups of support plates, and the right end of the drain pipe installed on the right side of the oil trap is installed with a pipe cover to close the drain pipe.

[0009] Compared with the related art, the deoiling device for stripping liquid after extraction with electroplating sludge leachate provided by the utility model has the following beneficial effects:

[0010] 1. The utility model connects two groups of clarification tanks in series on the top of the mounting plate, and a partition is installed inside the clarification tank. After the stripping liquid is discharged into the clarification tank, the suspended liquid and the clarified liquid in the stripping liquid will be stratified due to different densities, so that the suspended oil floats to the top of the clarified liquid. At this time, the oil extraction pipe can be extended into the interior of the clarification tank through the through hole opened at the upper end of the front side of the clarification tank to extract the suspended oil. The installation of the partition can prevent the oil extraction pipe from extending too far into the clarified liquid, so that the oil extraction pipe can only extract the suspended oil above the partition. By connecting the two groups of clarification tanks in series, most of the suspended oil in the stripping liquid can be extracted, preventing the subsequent oil collector from being quickly saturated when filtering the stripping liquid, thereby improving the quality of the stripping liquid.

[0011] 2. The utility model connects an oil collector to the right side of the second set of clarification tanks, and the oil collector is filled with activated carbon and oil-absorbing fibers. The stripping liquid after being treated by the two sets of clarification tanks connected in series can be filtered, and a small amount of organic suspended oil carried therein can be adsorbed. The clarified stripping liquid is then discharged through the drain pipe, thereby achieving sufficient adsorption treatment of the organic suspended oil in the stripping liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a top view of a three-dimensional structure schematic diagram of a deoiling device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0014] Figure 2 It is a schematic diagram of the side view of the three-dimensional structure of a deoiling device for stripping liquid after extraction with electroplating sludge leachate of the utility model;

[0015] Figure 3 It is a schematic diagram of the top view of the structure of a clarification tank of a deoiling device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of a stirring tank of a deoiling device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0017] Figure 5 It is a schematic cross-sectional view of the structure of a clarification tank of a deoiling device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0018] Figure 6It is a schematic diagram of the top view of the structure of a clarification tank of a deoiling device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0019] Figure 7 This is a schematic diagram of the structure of an oil catcher of an oil removal device for stripping liquid after extraction with electroplating sludge leachate according to the utility model;

[0020] Figure 8 It is an enlarged structural schematic diagram of position A of an oil removal device for stripping liquid after extraction with electroplating sludge leachate according to the utility model.

[0021] In the figure: 1. mounting plate; 2. support plate; 3. stirring tank; 4. fixing ring; 5. tank cover; 6. motor; 7. rotating rod; 8. stirring plate; 9. filling pipe; 10. liquid outlet pipe; 11. connecting ring; 12. drainage pump; 13. clarification tank; 14. connecting pipe; 15. sealing cover; 16. guide rod; 17. sliding sleeve; 18. partition; 19. sealing plug; 20. control valve; 21. conduit; 22. oil collector; 23. drain pipe. DETAILED DESCRIPTION

[0022] Please refer to Figure 1-8 A deoiling device for stripping liquid after extraction with electroplating sludge leachate, comprising a mounting plate 1, two sets of support plates 2 are symmetrically mounted on the bottom of the mounting plate 1, a stirring tank 3 is mounted on the left side of the top of the mounting plate 1, a tank cover 5 is mounted on the top of the stirring tank 3 through a fixing ring 4, a motor 6 is mounted on the top of the tank cover 5, a rotating rod 7 is connected to the bottom of the motor 6, a stirring plate 8 is mounted on the rotating rod 7, a filling pipe 9 is mounted on the side of the tank cover 5, a liquid outlet pipe 10 is mounted on the lower right end of the stirring tank 3, the liquid outlet pipe 10 is connected to a drainage pump 12 through a connecting ring 11, and a connecting pipe 1 is arranged between the right end of the drainage pump 12 and the left side of the clarification tank 13 4 are connected, connecting pipes 14 are installed on both sides of the clarification tank 13, a sealing cover 15 is installed on the top of the clarification tank 13, a guide rod 16 is installed inside the clarification tank 13, a sliding sleeve 17 is installed on the guide rod 16, the sliding sleeve 17 is installed at the four corners of the partition 18, the partition 18 is provided with a through groove, a through hole is opened on the front of the clarification tank 13 and a sealing plug 19 is installed, two groups of clarification tanks 13 are installed on the right side of the top of the mounting plate 1, a control valve 20 is installed between the two groups of clarification tanks 13, the right end of the right group of clarification tanks 13 is connected to an oil trap 22 through a conduit 21, and a drain pipe 23 is installed on the right side of the oil trap 22.

[0023] Preferably, the bottom of the support plate 2 is set to a T-shaped structure, and the two groups of support plates 2 can provide good support for the mounting plate 1 and its top structure. A group of fixing rings 4 are installed on the top outer side of the stirring tank 3 installed on the top left side of the mounting plate 1, and a group of fixing rings 4 are also installed on the bottom outer side of the tank cover 5. The two groups of fixing rings 4 are fixedly connected by four groups of symmetrical fixing bolts, so that the tank cover 5 is fixedly installed on the top of the stirring tank 3;

[0024] Preferably, the tank cover 5 is configured as a conical structure, and the filling pipe 9 installed on the left side of the tank cover 5 is configured as an upwardly inclined structure. The filling pipe 9 is connected to the internal space of the tank cover 5, and the electroplating sludge leachate, extractant and stripping agent can be injected into the interior of the stirring tank 3 through the filling pipe 9 for stirring. The left end of the filling pipe 9 is installed with a pipe cover, which can be used to close the filling pipe 9. The motor 6 is installed on the top of the tank cover 5 through a fixing bolt, and the rotating rod 7 installed at the bottom of the motor 6 passes through the tank cover 5 and is rotatably connected to the inner side of the stirring tank 3, and then the rotating rod 7 can be driven by the motor 6 to rotate. Four rows of stirring plates 8 are installed on the rotating rod 7, and each row of stirring plates 8 is composed of eight groups of stirring plates 8. The rotation of the rotating rod 7 can drive the stirring plates 8 to rotate inside the stirring tank 3, so that the electroplating sludge leachate, extractant and stripping agent inside the stirring tank 3 are fully stirred;

[0025] Preferably, a liquid outlet is provided at the lower right end of the stirring tank 3, in which a liquid outlet pipe 10 is inserted and installed, a group of connecting rings 11 are installed on the outer side of the right end of the liquid outlet pipe 10, and a group of connecting rings 11 are installed on the outer side of the left end of the drainage pump 12. The two groups of connecting rings 11 are fixedly connected by six groups of fixing bolts, thereby connecting the liquid outlet pipe 10 and the drainage pump 12 together. The right end of the drainage pump 12 is also connected to the connecting pipe 14 provided on the left side of the left group of clarification tanks 13 in the two groups of clarification tanks 13 through the two groups of connecting rings 11, so that the stripping liquid produced by stirring in the stirring tank 3 can be introduced into the first group of clarification tanks 13 through the drainage pump 12;

[0026] Preferably, a set of fixing blocks are installed at the four corners of the bottom of the sealing cover 15 installed on the top of the clarification tank 13, and a set of fixing blocks are also installed at the four corners of the top of the clarification tank 13. After the sealing cover 15 is installed on the top of the clarification tank 13, two sets of adjacent fixing blocks are fixed and assembled together by a set of fixing bolts, and then the sealing cover 15 is fixedly installed on the top of the clarification tank 13, so as to achieve the closure of the clarification tank 13. Two sets of handles are symmetrically installed on the top of the sealing cover 15 to facilitate the extraction of the sealing cover 15. Four groups of guide rods 16 are symmetrically installed at the four corners of the interior of the clarification tank 13. The tops of the four groups of guide rods 16 are flush with the top of the clarification tank 13. The four groups of sliding sleeves 17 installed on the four groups of guide rods 16 are at the same height. The four groups of sliding sleeves 17 are respectively installed inside the mounting holes opened at the four corners of the partition 18. The partition 18 and the internal space size of the clarification tank 13 are the same. The partition 18 can realize the lifting movement inside the clarification tank 13 through the movement of the sliding sleeves 17 on the guide rods 16. The sliding sleeves 17 and the guide rods 16 are connected. There is friction between the two parts. In the absence of external force, the sliding sleeve 17 will not move downward spontaneously, so that the partition 18 will not fall in the absence of external force, ensuring that the partition 18 is stably installed inside the clarification tank 13. Nine groups of through grooves are evenly opened on the partition 18. The through hole opened on the front of the clarification tank 13 is located at the upper end of the front of the clarification tank 13. The sealing plug 19 installed inside the through hole can be used to close the through hole. The connecting pipe 14 installed on the right side of the first group of clarification tanks 13 and the connecting pipe 14 installed on the left side of the second group of clarification tanks 13 are connected through a control valve 20. The connecting pipe 14 installed on the right side of the second group of clarification tanks 13 and the conduit 21 are connected through two groups of connecting rings 11. The conduit 21 is set to an L-shaped structure. The bottom of the conduit 21 is installed at the top opening of the oil catcher 22. The oil catcher 22 is fixedly installed on the right side of a group of support plates 2 on the right side of the two groups of support plates 2. The right end of the drain pipe 23 installed on the right side of the oil catcher 22 is installed with a pipe cover to close the drain pipe 23.

[0027] Working principle: When installing the partition 18 inside the clarification tank 13, the content of organic matter in the stripping liquid should be fully considered. The stripping liquid will be stratified when it is left to stand, and a large amount of organic matter contained therein will float to the top of the clarified liquid to form a layer of suspended oil. Therefore, when installing the partition 18, it should be ensured that the partition 18 is in the layer of suspended oil in the stripping liquid stratification after the stripping liquid is left to stand inside the clarification tank 13, that is, the partition 18 cannot be in the clarified liquid in the stripping liquid after stratification, and the electroplating sludge is leached out through the stirring tank 3. The liquid, the extractant and the stripping agent are fully mixed and stirred and discharged into the first group of clarification tanks 13 through the drainage pump 12. At this time, the control valve 20 between the two groups of clarification tanks 13 should be ensured to be in a closed state. Then the stripping liquid is layered inside the first group of clarification tanks 13, and the partition 18 is in the suspended oil. Then the sealing plug 19 can be removed, and then the suspended oil at the top of the clarification tank 13 is extracted through the oil extraction pipeline. However, this process cannot completely extract all the suspended oil. Then the control valve 20 is opened to allow the stripping liquid to flow into the second group of clarification tanks 13, and then the stripping liquid is removed. Since a large amount of suspended oil and a small amount of clarified liquid were extracted in the previous oil extraction process, the volume of the stripping liquid in the second group of clarification tanks 13 decreased as a whole, and after the stripping liquid was allowed to stand for stratification, the liquid level of the clarified liquid would be slightly lower than the liquid level of the clarified liquid in the first group of clarification tanks 13. Therefore, when installing the baffles 18 in the second group of clarification tanks 13, the height of the baffles 18 in this group should be slightly lower than the height of the baffles 18 in the first group of clarification tanks 13. Then, the oil extraction operation in the first group of clarification tanks 13 is repeated to remove the suspended oil separated from the second group of clarification tanks 13. Extraction, through two oil extraction operations, it can be basically ensured that most of the organic suspended oil in the stripping liquid is extracted, and then the stripping liquid in the second group of clarification tanks 13 can be introduced into the oil collector 22 through the conduit 21. The oil collector 22 is filled with activated carbon and oil-absorbing fibers, which can adsorb the small amount of organic suspended oil finally carried in the stripping liquid, and then the clarified stripping liquid is discharged through the drain pipe 23. The device can connect different numbers of clarification tanks 13 in series according to the content of organic suspended oil in the stripping liquid to achieve a more perfect oil removal treatment.

[0028] The standard parts used in this embodiment can be purchased directly from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the components known to technical personnel in this field, their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0029] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A deoiling device for stripping solution after extraction with electroplating sludge leachate, comprising a mounting plate (1), two sets of support plates (2) are symmetrically mounted on the bottom of the mounting plate (1), characterized in that: A stirring tank (3) is installed on the left side of the top of the mounting plate (1), a tank cover (5) is installed on the top of the stirring tank (3) via a fixing ring (4), a motor (6) is installed on the top of the tank cover (5), a rotating rod (7) is connected to the bottom of the motor (6), a stirring plate (8) is installed on the rotating rod (7), a filling pipe (9) is installed on the side of the tank cover (5), a liquid outlet pipe (10) is installed at the lower right end of the stirring tank (3), the liquid outlet pipe (10) is connected to a drainage pump (12) via a connecting ring (11), the right end of the drainage pump (12) is connected to a connecting pipe (14) provided on the left side of the clarification tank (13), and connecting pipes (14) are installed on both sides of the clarification tank (13). 4), a sealing cover (15) is installed on the top of the clarification tank (13), a guide rod (16) is installed inside the clarification tank (13), a sliding sleeve (17) is installed on the guide rod (16), and the sliding sleeve (17) is installed at the four corners of the partition (18), and the partition (18) is provided with a through groove, and a through hole is opened on the front of the clarification tank (13) and a sealing plug (19) is installed, two groups of clarification tanks (13) are installed on the right side of the top of the mounting plate (1), and a control valve (20) is installed between the two groups of clarification tanks (13), and the right end of the right group of clarification tanks (13) is connected to an oil trap (22) through a conduit (21), and a drain pipe (23) is installed on the right side of the oil trap (22).

2. The deoiling device for stripping solution after extraction with electroplating sludge leachate according to claim 1, characterized in that: The bottom of the support plate (2) is arranged in a T-shaped structure, a group of fixing rings (4) are installed on the outer side of the top of the stirring tank (3) installed on the left side of the top of the mounting plate (1), and a group of fixing rings (4) are also installed on the outer side of the bottom of the tank cover (5), and the two groups of fixing rings (4) are fixedly connected by four groups of symmetrical fixing bolts.

3. The deoiling device for stripping solution after extraction with electroplating sludge leachate according to claim 1, characterized in that: The tank cover (5) is configured as a conical structure, the filling pipe (9) installed on the left side of the tank cover (5) is configured as an upwardly inclined structure, the filling pipe (9) is connected to the internal space of the tank cover (5), a pipe cover is installed at the left end of the filling pipe (9), the motor (6) is installed on the top of the tank cover (5) through a fixing bolt, the rotating rod (7) installed at the bottom of the motor (6) passes through the tank cover (5) and is rotatably connected to the inner side of the stirring tank (3), and four rows of stirring plates (8) are installed on the rotating rod (7), and each row of stirring plates (8) is composed of eight groups of stirring plates (8).

4. The deoiling device for stripping solution after extraction with electroplating sludge leachate according to claim 1, characterized in that: A liquid outlet is provided at the lower right end of the stirring tank (3), in which a liquid outlet pipe (10) is inserted and installed. A group of connecting rings (11) is installed on the outer side of the right end of the liquid outlet pipe (10). A group of connecting rings (11) is installed on the outer side of the left end of the drainage pump (12). The two groups of connecting rings (11) are fixedly connected by six groups of fixing bolts. The right end of the drainage pump (12) is also connected to a connecting pipe (14) provided on the left side of the left group of clarification tanks (13) of the two groups of clarification tanks (13) through the two groups of connecting rings (11).

5. The deoiling device for stripping solution after extraction with electroplating sludge leachate according to claim 1, characterized in that: A set of fixing blocks are installed at the four corners of the bottom of the sealing cover (15) installed on the top of the clarification tank (13). A set of fixing blocks are also installed at the four corners of the top of the clarification tank (13). Two sets of handles are symmetrically installed on the top of the sealing cover (15). Four sets of guide rods (16) are symmetrically installed at the four corners of the interior of the clarification tank (13). The tops of the four sets of guide rods (16) are flush with the top of the clarification tank (13). Four sets of sliding sleeves (17) installed on the four sets of guide rods (16) are at the same height. The four sets of sliding sleeves (17) are respectively installed inside the mounting holes opened at the four corners of the partition (18). The internal space dimensions of the partition (18) and the clarification tank (13) are the same. Nine sets of through grooves are evenly opened on the partition (18). The through hole opened on the front of the tank (13) is located at the upper end of the front of the clarification tank (13); the connecting pipe (14) installed on the right side of the first group of clarification tanks (13) and the connecting pipe (14) installed on the left side of the second group of clarification tanks (13) are connected through a control valve (20); the connecting pipe (14) installed on the right side of the second group of clarification tanks (13) and the conduit (21) are connected through two groups of connecting rings (11); the conduit (21) is arranged in an L-shaped structure; the bottom of the conduit (21) is installed at the top opening of an oil trap (22); the oil trap (22) is fixedly installed on the right side of a right side support plate (2) of the two groups of support plates (2); and the right end of the drain pipe (23) installed on the right side of the oil trap (22) is installed with a pipe cover.

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