Separation and purification device for metal processing wastewater

Abstract

The utility model relates to the technical field of metal processing wastewater treatment, and discloses a metal processing wastewater separation and purification device which comprises a box body, a mixing cavity, a liquid discharge channel and a separation cavity are formed in the box body, the liquid discharge channel is arranged between the mixing cavity and the separation cavity, a valve is arranged in the liquid discharge channel, and a water injection pipe and an adding pipe which are connected with the mixing cavity are mounted on the box body; when sediment on the filter screen is excessive, the second motor is started to drive the rotating shaft connected with the second motor to rotate, so that the winding drums start to rotate and wind the conveying belt, the filter screen accumulated with the sediment is wound by the winding drums, and meanwhile, the conveying belt on the winding drum on the other side can put the clean filter screen into the separation cavity; when the filter screen on which sediments are accumulated is wound by the winding drum, the sediments on the filter screen can be cleaned by the cleaning part, so that the sediments can be automatically cleaned in the process of replacing the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing wastewater treatment, in particular to a separation and purification device for metal processing wastewater. Background Art

[0002] Metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining, machinery manufacturing, chemical industry, electronics, and instrumentation. The heavy metals in heavy metal wastewater generally cannot be decomposed and destroyed, but can only be transferred to other locations and change their physical and chemical forms.

[0003] Metal wastewater needs to be separated and purified during treatment. During the separation and purification process, flocculation and sedimentation are required. By adding flocculants to the metal wastewater and stirring the metal wastewater evenly, tiny particles are gathered together and precipitated, and then filtered through a filter. However, as the filtration proceeds, the sediment on the filter will gradually increase and need to be cleaned, which is inconvenient. For this reason, those skilled in the art have proposed a separation and purification device for metal processing wastewater to solve the problems raised in the above background. Utility Model Content

[0004] The purpose of the utility model is to provide a separation and purification device for metal processing wastewater to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A separation and purification device for metal processing wastewater, comprising a box body; a mixing chamber, a drainage channel and a separation chamber are provided in the box body, the drainage channel is arranged between the mixing chamber and the separation chamber, a valve is provided in the drainage channel, an injection pipe and an addition pipe connected to the mixing chamber are installed on the box body, the injection pipe is used to inject metal wastewater, the addition pipe is used to add flocculant, a stirring component is provided in the mixing chamber for stirring and mixing the metal wastewater and the flocculant, an inner cavity is provided in the box body on both sides of the separation chamber, a rotating shaft is rotatably provided in the inner cavity, a winding drum is installed on the rotating shaft, a conveyor belt is wound around the winding drum, two filter screens are provided on the conveyor belt, one of the rotating shafts is movably provided with a torsion spring connecting the winding drum and the inner cavity, and the other rotating shaft is connected to a second motor installed on the outer wall of the box body, and a cleaning component is provided in the inner cavity for cleaning the sediment accumulated on the filter screen.

[0007] As a further solution of the present invention: the stirring component includes a stirring shaft rotatably arranged in the mixing chamber, a stirring rod is installed on the stirring shaft, and a first motor connected to the stirring shaft is installed on the top of the box.

[0008] As a further solution of the present invention: the cleaning component includes a movable shaft installed in the inner cavity and close to the winding drum, a scraper is rotatably provided on the movable shaft, a fixed plate is provided in the inner cavity, and a spring connected to the scraper is provided on the fixed plate.

[0009] As a further solution of the present invention: a material guide plate is provided in the inner cavity, and discharge ports connected to the material guide plate are opened on both sides of the box body.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention injects metal wastewater into the mixing chamber through the water injection port, adds flocculant through the adding pipe, and stirs the metal wastewater and flocculant evenly through the stirring component, so that tiny particles gather and precipitate, and the valve is opened to discharge the metal wastewater containing sediment from the drainage pipe into the separation chamber, and the sediment is filtered through the filter screen on the conveyor belt, and the filtered metal wastewater is discharged from the bottom of the separation chamber. When there is too much sediment on the filter screen, the second motor is started to drive the rotating shaft connected to it to rotate, so that the winding drum starts to rotate and winds the conveyor belt, so that the filter screen with sediment accumulated is wound by the winding drum, and at the same time, the conveyor belt on the winding drum on the other side will put the clean filter screen into the separation chamber, thereby completing the replacement of the filter screen. In the process of the filter screen with sediment accumulated being wound by the winding drum, the cleaning component will clean the sediment on the filter screen, thereby realizing self-cleaning of the sediment during the process of replacing the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a separation and purification device for metal processing wastewater.

[0012] Figure 2 This is a schematic diagram of the internal structure of a metal processing wastewater separation and purification device.

[0013] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0014] Figure 4 This is a schematic diagram of the structure of a conveyor belt and filter screen in a metal processing wastewater separation and purification device.

[0015] In the figure: 1. Box body; 2. Water injection pipe; 3. Adding pipe; 4. Mixing chamber; 5. First motor; 6. Stirring shaft; 7. Stirring rod; 8. Drainage channel; 9. Valve; 10. Separation chamber; 11. Inner cavity; 12. Rotating shaft; 13. Winding drum; 14. Conveyor belt; 15. Filter screen; 16. Guide plate; 17. Discharge port; 18. Movable shaft; 19. Scraper; 20. Fixed plate; 21. Spring; 22. Torsion spring; 23. Second motor. DETAILED DESCRIPTION

[0016] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0017] See also Figures 1-4 A separation and purification device for metal processing wastewater includes a housing 1; a mixing chamber 4, a drainage channel 8 and a separation chamber 10 are provided in the housing 1, the drainage channel 8 is arranged between the mixing chamber 4 and the separation chamber 10, a valve 9 is provided in the drainage channel 8, an injection pipe 2 and an addition pipe 3 connected to the mixing chamber 4 are installed on the housing 1, the injection pipe 2 is used to inject metal wastewater, the addition pipe 3 is used to add flocculant, and a stirring component is provided in the mixing chamber 4 for stirring and mixing the metal wastewater and the flocculant. An inner cavity 11 is provided on both sides of the separation cavity 10 in the box body 1, and a rotating shaft 12 is rotatably provided in the inner cavity 11, and a winding drum 13 is installed on the rotating shaft 12, and a conveyor belt 14 is wound on the winding drum 13, and two filter screens 15 are provided on the conveyor belt 14. A torsion spring 22 connecting the winding drum 13 and the inner cavity 11 is movably provided on one of the rotating shafts 12, and the other rotating shaft 12 is connected to a second motor 23 installed on the outer wall of the box body 1, and a cleaning component is provided in the inner cavity 11 for cleaning the sediment accumulated on the filter screen 15.

[0018] The metal wastewater is injected into the mixing chamber 4 through the water injection port, and the flocculant is added through the adding pipe 3. The metal wastewater and the flocculant are evenly stirred by the stirring component, so that the tiny particles gather and precipitate. The valve 9 is opened to discharge the metal wastewater containing the sediment from the drainage pipe into the separation chamber 10, and the sediment is filtered through the filter screen 15 on the conveyor belt 14. The filtered metal wastewater is discharged from the bottom of the separation chamber 10; when there is too much sediment on the filter screen 15, the second motor 23 is started to drive the rotating shaft 12 connected thereto to rotate, so that the winding drum 13 starts to rotate, and the conveyor belt 14 is wound, so that the filter screen 15 with the sediment accumulated is wound by the winding drum 13, and at the same time, the conveyor belt on the winding drum 13 on the other side is wound. The belt 14 will place the clean filter screen 15 into the separation chamber 10, thereby completing the replacement of the filter screen 15. When the filter screen 15 with sediment is wound by the winding drum 13, the cleaning component will clean the sediment on the filter screen 15, thereby realizing self-cleaning of the sediment during the replacement of the filter screen 15. When there is a lot of sediment accumulated on the replaced filter screen 15, the second motor 23 is started in the reverse direction to reverse the rotating shaft 12 connected thereto, so that the winding drum 13 starts to release the conveyor belt 14, and the winding drum 13 in the inner cavity 11 on the other side starts to wind the conveyor belt 14 under the action of the torsion spring 22, and cleans the sediment accumulated on the filter screen 15 through the cleaning component, thereby realizing the rotation of the two filter screens 15.

[0019] In one case of this embodiment, the stirring component includes a stirring shaft 6 rotatably arranged in the mixing chamber 4, a stirring rod 7 is installed on the stirring shaft 6, and a first motor 5 connected to the stirring shaft 6 is installed on the top of the box body 1.

[0020] The metal wastewater is injected into the mixing chamber 4 through the water injection port, and the flocculant is added through the adding pipe 3. The first motor 5 is started to drive the stirring rod 7 to rotate so that the stirring rod 7 can stir the metal wastewater and the flocculant evenly, so that the tiny particles gather and precipitate. Then, the valve 9 is opened to discharge the metal wastewater containing the precipitate from the drainage pipe into the separation chamber 10, and the precipitate is filtered through the filter screen 15 on the conveyor belt 14. The filtered metal wastewater is discharged from the bottom of the separation chamber 10.

[0021] In one case of this embodiment, the cleaning component includes a movable shaft 18 installed in the inner cavity 11 and close to the winding drum 13, a scraper 19 is rotatably provided on the movable shaft 18, a fixed plate 20 is provided in the inner cavity 11, and a spring 21 connected to the scraper 19 is provided on the fixed plate 20.

[0022] During the process of replacing the filter 15, the conveyor belt 14 on the side of the filter 15 where sediment is accumulated will enter the inner cavity 11 on one side and be wound by the winding drum 13. During the winding process, due to the elastic tension of the spring 21, the scraper 19 is attached to the surface of the conveyor belt 14, so that the sediment on the surface of the filter 15 can be cleaned, thereby realizing self-cleaning of the sediment during the process of replacing the filter 15.

[0023] In one case of this embodiment, a material guide plate 16 is provided in the inner cavity 11 , and discharge ports 17 connected to the material guide plate 16 are opened on both sides of the box body 1 .

[0024] The sediment cleaned by the scraper 19 falls onto the guide plate 16 and is discharged from the discharge port 17 along the guide plate 16 .

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A separation and purification device for metal processing wastewater, comprising a housing, characterized in that: A mixing chamber, a drainage channel and a separation chamber are provided in the box body, the drainage channel is arranged between the mixing chamber and the separation chamber, a valve is provided in the drainage channel, an injection pipe and an addition pipe connected to the mixing chamber are installed on the box body, the injection pipe is used to inject metal wastewater, and the addition pipe is used to add flocculant, a stirring component is provided in the mixing chamber for stirring and mixing the metal wastewater and the flocculant, an inner cavity is provided in the box body on both sides of the separation chamber, a rotating shaft is provided for rotation in the inner cavity, a winding drum is installed on the rotating shaft, a conveyor belt is wound around the winding drum, and two filters are provided on the conveyor belt, one of the rotating shafts is movably provided with a torsion spring connecting the winding drum and the inner cavity, and the other rotating shaft is connected to a second motor installed on the outer wall of the box body, and a cleaning component is provided in the inner cavity for cleaning the sediment accumulated on the filter screen.

2. The separation and purification device for metal processing wastewater according to claim 1, characterized in that: The stirring component comprises a stirring shaft rotatably arranged in the mixing chamber, a stirring rod is installed on the stirring shaft, and a first motor connected to the stirring shaft is installed on the top of the box.

3. The separation and purification device for metal processing wastewater according to claim 1, characterized in that: The cleaning component includes a movable shaft installed in the inner cavity and close to the winding drum, a scraper is rotatably arranged on the movable shaft, a fixed plate is arranged in the inner cavity, and a spring connected to the scraper is arranged on the fixed plate.

4. The separation and purification device for metal processing wastewater according to claim 3, characterized in that: A material guide plate is provided in the inner cavity, and discharge ports connected to the material guide plate are provided on both sides of the box body.

5. The separation and purification device for metal processing wastewater according to claim 1, characterized in that: A valve is provided in the drainage channel.

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