Molybdenum heavy metal wastewater recovery device

Abstract

The utility model discloses a molybdenum heavy metal wastewater recovery device, which belongs to the technical field of heavy metal wastewater treatment and comprises a mixing tank, a water inlet pipe and a liquid inlet pipe are sequentially and fixedly mounted on the outer wall of the mixing tank, a sedimentation tank is mounted on one side, far away from the water inlet pipe, of the mixing tank, and a recovery tank is mounted on one side of the sedimentation tank. A stirring paddle is rotatably mounted in an inner cavity of the mixing tank, a scraper is rotatably connected to the bottom end in the mixing tank, a driving structure is rotatably connected to the axis in the mixing tank, the driving structure drives the stirring paddle to move up and down, the scraper is matched with the driving structure to synchronously rotate under the action of the driving structure, and sediments at the bottom of the tank are scraped in time; and full convection of the mixed liquid in the horizontal and vertical directions is realized, so that the waste liquid can be in full contact with a flocculating agent, the flocculation reaction effect is enhanced, effective precipitation of heavy metal ions such as molybdenum is promoted, the recovery efficiency of the heavy metal molybdenum is further improved, impurity deposition can be prevented from influencing the reaction, the mixing uniformity is guaranteed, and the recovery effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy metal wastewater treatment, in particular to a molybdenum heavy metal wastewater recovery device. Background Art

[0002] The molybdenum heavy metal wastewater recovery device is a treatment equipment designed for molybdenum-containing industrial wastewater. Its core function is to efficiently recover molybdenum resources and achieve standard discharge of wastewater, which can reduce the risk of heavy metal pollution. It is suitable for wastewater treatment in the metallurgical, chemical and other industries, and has both environmental benefits and resource recovery value.

[0003] A Chinese patent discloses a molybdenum heavy metal wastewater recovery device (Announcement No. CN215799009U). The patent includes a box body, the top cover of the box body is connected to a sealing cover, a stirring mechanism is provided in the box body, an adsorption mechanism is provided in the box body, a water inlet connector is fixedly connected to the left side of the top of the sealing cover, a water outlet pipe is provided on the right side of the top of the sealing cover, a water pump is provided at the top of the water outlet pipe, and a feeding port is provided on the right side of the top of the sealing cover;

[0004] Therefore, based on the above search and in combination with the existing ones, in industrial wastewater treatment, due to the characteristics of the wastewater and the requirements of the flocculation reaction, it is necessary to ensure that the two can be fully mixed. However, the stirring structure in this patent can only rotate in place to form a horizontal flow, and lacks vertical convection, resulting in uneven mixing of the wastewater and the flocculant, insufficient reaction, affecting the solid-liquid separation and molybdenum recovery efficiency, and insufficient mixing will also cause local concentration imbalance. The flocs generated by the excessive reaction of the flocculant are easy to clog the equipment, accelerate corrosion, shorten the equipment life, and seriously weaken the wastewater treatment effect and equipment operation efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a molybdenum heavy metal wastewater recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A molybdenum and heavy metal wastewater recovery device comprises a mixing tank, wherein an inlet pipe for injecting wastewater and a liquid inlet pipe for injecting flocculant are fixedly mounted on the outer wall of the mixing tank in sequence; a sedimentation tank for solid-liquid separation is mounted on a side of the mixing tank away from the inlet pipe; and a recovery tank is mounted on one side of the sedimentation tank for recovering treated wastewater;

[0008] The inner cavity of the mixing tank is rotatably installed with a stirring paddle for stirring the mixed liquid up and down, the inner bottom end of the mixing tank is rotatably connected with a scraper for preventing the mixed liquid from settling, and the inner axis of the mixing tank is rotatably connected with a driving structure for driving the stirring paddle and the scraper to operate. The stirring paddle is driven back and forth by the driving structure to promote sufficient convection of the upper and lower layers of liquid, and the scraper at the bottom is driven to rotate synchronously to prevent impurities in the wastewater from settling and clumping.

[0009] As a further solution of the present invention, the driving structure includes a moving rod, which is fixedly inserted at the axis of the stirring paddle. The inner cavity of the moving rod is rotatably connected to a transmission shaft, and the top of the transmission shaft is fixedly connected to a rotating shaft for receiving rotational power. The transmission shaft is driven to rotate by the rotating shaft, and the moving rod is controlled to drive the stirring paddle to move up and down, thereby promoting mixing of the upper and lower layers of liquid.

[0010] As a further solution of the present invention, the outer wall of the moving rod is fixedly connected with a transmission block for driving the moving rod to move up and down. One end of the transmission block passes through the moving rod and is embedded in a spiral groove opened on the outer wall of the transmission shaft, and the transmission block forms a sliding fit with the spiral groove.

[0011] As a further solution of the present invention, the driving structure also includes a rotating tube, which is rotatably installed at the bottom end of the inner cavity of the mixing tank. A plurality of driving blocks for controlling the rotation of the scraper are fixedly installed on the outer surface of the bottom end of the moving rod. A guide groove is provided on the inner wall of the rotating tube, and one end of the driving block slides in the guide groove.

[0012] As a further solution of the present invention, the outer wall of the sedimentation tank is fixedly connected with a sewage pipe for discharging waste residues, and the outer wall of the recovery tank is fixedly connected with a clean water pipe for discharging treated wastewater that meets the standards.

[0013] As a further solution of the present invention, three groups of filter plates for further filtering the wastewater are fixedly connected to the inner cavity of the recovery tank. The inner cavities of the three groups of filter plates are all distributed with filter holes, and the three groups of filter plates are distributed in sequence from large to small according to the pore size.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. When the utility model is used, the driving structure drives the stirring paddle to move up and down, and the scraper rotates synchronously under the action of the driving structure to timely scrape off the sediment at the bottom of the tank, so as to achieve sufficient convection of the mixed liquid in the horizontal and vertical directions, so that the waste liquid and the flocculant can be more fully in contact, the flocculation reaction effect is strengthened, and the effective precipitation of heavy metal ions such as molybdenum is promoted, thereby improving the recovery efficiency of molybdenum and heavy metals. At the same time, it can also avoid the influence of impurity deposition on the reaction, ensure the mixing uniformity, and further improve the recovery effect.

[0016] 2. When the utility model is used, the mixing tank, sedimentation tank and recovery tank work together to allow the sedimentation tank to use gravity to achieve preliminary separation of solid and liquid, reduce solid impurities entering the recovery tank, and cooperate with the three groups of filter plates set in the recovery tank, which are distributed in sequence from large to small according to the pore size, to perform step-by-step depth filtration on the wastewater, which can effectively intercept suspended particles of different particle sizes, remove residual fine impurities and flocs that may not be completely precipitated, and significantly improve the water quality of the treated wastewater, ensuring that it meets the discharge standards or meets the reuse requirements, reduces environmental pollution, and realizes the effective recycling of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a molybdenum heavy metal wastewater recovery device.

[0018] Figure 2 This is a cross-sectional view of a mixing tank in a molybdenum heavy metal wastewater recovery device.

[0019] Figure 3 This is a cross-sectional view of the driving structure in a molybdenum heavy metal wastewater recovery device.

[0020] Figure 4 This is a disassembled diagram of the driving structure in a molybdenum heavy metal wastewater recovery device.

[0021] Figure 5 This is a cross-sectional view of a recovery tank in a molybdenum heavy metal wastewater recovery device.

[0022] In the figure: 1. Mixing tank; 2. Water inlet pipe; 3. Liquid inlet pipe; 4. Sedimentation tank; 5. Recovery tank; 6. Agitator; 7. Scraper; 8. Drive structure; 9. Connecting pipe; 10. Output pipe; 11. Water pump; 12. Sewage pipe; 13. Clean water pipe; 14. Filter plate; 801. Moving rod; 802. Transmission shaft; 803. Rotating shaft; 804. Transmission block; 805. Spiral groove; 806. Fixed sleeve; 807. Mounting frame; 808. Motor; 809. Rotating pipe; 810. Drive block; 811. Guide groove; 812. Support pipe; 813. Telescopic pipe; 814. Telescopic spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1 、 Figure 2A molybdenum and heavy metal wastewater recovery device includes a mixing tank 1. An inlet pipe 2 for injecting wastewater and a liquid inlet pipe 3 for injecting flocculant are fixedly installed on the outer wall of the mixing tank 1 in sequence. A sedimentation tank 4 for solid-liquid separation is installed on the side of the mixing tank 1 away from the water inlet pipe 2. The sedimentation tank 4 can promptly receive the liquid output from the mixing tank 1 and use gravity to achieve efficient solid-liquid separation. A recovery tank 5 is installed on one side of the sedimentation tank 4, and the recovery tank 5 is used to recover the treated wastewater to avoid secondary pollution.

[0025] The inner cavity of the mixing tank 1 is rotatably installed with a stirring paddle 6 for stirring the mixed liquid up and down. The bottom end of the mixing tank 1 is rotatably connected to a scraper 7 for preventing the mixed liquid from settling. The inner axis of the mixing tank 1 is rotatably connected to a driving structure 8 for driving the stirring paddle 6 and the scraper 7 through a bearing. The stirring paddle 6 is driven back and forth by the driving structure 8 to strongly stir the mixed liquid, promote sufficient convection of the upper and lower layers of liquid, strengthen the flocculation reaction effect, and drive the scraper 7 at the bottom to rotate synchronously, close to the inner wall of the mixing tank 1 to scrape off the sediment, prevent impurities in the wastewater from settling and hardening, and ensure uniform reaction.

[0026] Specifically, the outer walls of the water inlet pipe 2 and the liquid inlet pipe 3 are fixedly provided with a shut-off valve for accurately controlling the injection of wastewater and flocculant. The drive structure 8 provides stable power for the stirring paddle 6 and the scraper 7, ensuring the efficient and stable operation of the entire device and improving the recovery efficiency of molybdenum heavy metals.

[0027] See also Figure 2 、 Figure 3 、 Figure 4 The driving structure 8 includes a moving rod 801, which is fixedly inserted into the axis of the stirring paddle 6. The inner cavity of the moving rod 801 is rotatably connected to a transmission shaft 802. The top of the transmission shaft 802 is fixedly connected to a rotating shaft 803 for receiving rotational power. The transmission shaft 802 is driven to rotate by the rotating shaft 803, and the moving rod 801 is controlled to drive the stirring paddle 6 to move up and down, thereby promoting mixing of the upper and lower layers of liquid.

[0028] A transmission block 804 is fixedly connected to the outer wall of the moving rod 801 to drive the moving rod 801 to move up and down. One end of the transmission block 804 passes through the moving rod 801 and is embedded in a spiral groove 805 provided on the outer wall of the transmission shaft 802. The transmission block 804 and the spiral groove 805 form a sliding fit.

[0029] Specifically, the spiral groove 805 is distributed in a continuous spiral shape along the axial direction of the transmission shaft 802. When the rotating shaft 803 drives the transmission shaft 802 to rotate, the spiral trajectory of the spiral groove 805 forces the transmission block 804 to produce axial displacement. Since the transmission block 804 and the moving rod 801 are rigidly connected, the moving rod 801 is driven by the transmission block 804 to perform reciprocating linear motion along the axial direction of the transmission shaft 802.

[0030] More specifically, the outer wall of the movable rod 801 is fixedly sleeved with a fixed sleeve 806 for fixing the stirring paddles 6. There are six groups of stirring paddles 6 and they are all fixedly connected to the outer wall of the fixed sleeve 806. The stirring paddles 6 of each group are radially and equidistantly arranged.

[0031] More specifically, the top of the mixing tank 1 is fixedly connected to the mounting bracket 807 by bolts, the inner cavity of the mounting bracket 807 is fixedly installed with a motor 808 for providing driving power, and the top of the rotating shaft 803 passes through the mixing tank 1 and is fixedly connected to the output end of the motor 808.

[0032] Example 2: Please refer to Figure 2 、 Figure 3 、 Figure 4 Based on Example 1, the driving structure 8 further includes a rotating tube 809, which is rotatably mounted on the bottom end of the inner cavity of the mixing tank 1 through a bearing, and the scraper 7 is fixedly connected to the outer wall of the rotating tube 809. A plurality of driving blocks 810 for controlling the rotation of the scraper 7 are fixedly mounted on the outer surface of the bottom end of the moving rod 801. A guide groove 811 is formed on the inner wall of the rotating tube 809, and one end of the driving block 810 is slidably located in the guide groove 811.

[0033] Specifically, a support tube 812 is fixedly installed at the bottom end of the inner cavity of the mixing tank 1, and a telescopic tube 813 is slidably connected to the inner cavity of the support tube 812, and the top of the telescopic tube 813 is fixedly connected to the moving rod 801, and a telescopic spring 814 is provided on the outside of the telescopic tube 813. Through the combination of the support tube 812, the telescopic tube 813 and the telescopic spring 814, the moving rod 801 is provided with stable support and buffering reset functions, which not only limits the moving range of the moving rod 801 and makes its movement more precise, but also when the moving rod 801 moves, the telescopic spring 814 can absorb energy and reduce vibration, thereby ensuring the stable operation of the entire driving structure 8 and extending the service life of the equipment.

[0034] See also Figure 1 One end of the sedimentation tank 4 is fixedly connected to a connecting pipe 9, and it is fixedly connected to the mixing tank 1 through the connecting pipe 9. The other end of the sedimentation tank 4 is fixedly connected to an output pipe 10, and it is fixedly connected to the recovery tank 5 through the output pipe 10. A water pump 11 is fixedly installed on the outer wall of the output pipe 10. The outer wall of the sedimentation tank 4 is fixedly connected to a sewage pipe 12 for discharging waste residue, and the outer wall of the recovery tank 5 is fixedly connected to a clean water pipe 13 for discharging treated wastewater that meets the standards.

[0035] See also Figure 5 The inner cavity of the recovery tank 5 is fixedly connected with three groups of filter plates 14 for further filtering the wastewater. The inner cavities of the three groups of filter plates 14 are all distributed with filter holes, and the three groups of filter plates 14 are distributed in order from large to small according to the pore size.

[0036] The working principle of this utility model is:

[0037] First, after the wastewater is quantitatively injected into the mixing tank 1 through the water inlet pipe 2 and the flocculant is quantitatively injected into the mixing tank 1 through the liquid inlet pipe 3, the motor 808 is started, and the transmission shaft 802 is driven to rotate through the rotating shaft 803. The spiral groove 805 on the outer wall of the transmission shaft 802 forces the transmission block 804 to produce axial displacement, thereby causing the moving rod 801 to perform reciprocating linear motion along the axial direction of the transmission shaft 802, driving the stirring paddle 6 to move up and down. At the same time, when the moving rod 801 moves, the driving block 810 at its bottom end synchronously slides in the guide groove 811 on the inner wall of the rotating tube 809, causing the rotating tube 809 to rotate, driving the scraper 7 to rotate and scrape off the sediment at the bottom of the tank, thereby achieving sufficient convection of the mixed liquid in the horizontal and vertical directions and strengthening the flocculation reaction. The support tube 812, the telescopic tube 813 and the telescopic spring 814 provide stable support and buffer reset for the moving rod 801;

[0038] The mixed liquid then flows into the sedimentation tank 4 through the connecting pipe 9, where solid-liquid separation is achieved by gravity, and the waste residue is discharged from the sewage pipe 12. The separated liquid is pumped into the recovery tank 5 by the water pump 11 through the output pipe 10. In the recovery tank 5, the wastewater is further filtered through three groups of filter plates 14 with apertures from large to small in sequence to remove residual impurities. Finally, the wastewater that meets the treatment standards is discharged from the clean water pipe 13.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A molybdenum heavy metal wastewater recovery device, comprising a mixing tank (1), characterized in that: An inlet pipe (2) for injecting wastewater and a liquid inlet pipe (3) for injecting flocculant are fixedly mounted on the outer wall of the mixing tank (1) in sequence. A sedimentation tank (4) for solid-liquid separation is mounted on a side of the mixing tank (1) away from the inlet pipe (2). A recovery tank (5) is mounted on one side of the sedimentation tank (4) and is used to recover the treated wastewater. The inner cavity of the mixing tank (1) is rotatably mounted with a stirring paddle (6) for stirring the mixed liquid up and down, the inner bottom of the mixing tank (1) is rotatably connected with a scraper (7) for preventing the mixed liquid from settling, and the inner axis of the mixing tank (1) is rotatably connected with a driving structure (8) for driving the stirring paddle (6) and the scraper (7) to operate. The driving structure (8) drives the stirring paddle (6) to move back and forth, thereby promoting sufficient convection of the upper and lower layers of liquid, and drives the scraper (7) at the bottom to rotate synchronously, thereby preventing impurities in the wastewater from settling and hardening.

2. A molybdenum heavy metal wastewater recovery device according to claim 1, characterized in that, The driving structure (8) includes a moving rod (801), which is fixedly inserted at the axis of the stirring paddle (6). The inner cavity of the moving rod (801) is rotatably connected to a transmission shaft (802), and the top end of the transmission shaft (802) is fixedly connected to a rotating shaft (803) for receiving rotational power. The transmission shaft (802) is driven to rotate by the rotating shaft (803), and the moving rod (801) is controlled to drive the stirring paddle (6) to move up and down, thereby promoting mixing of the upper and lower layers of liquid.

3. A molybdenum heavy metal wastewater recovery device according to claim 2, characterized in that, The outer wall of the moving rod (801) is fixedly connected to a transmission block (804) for driving the moving rod (801) to move up and down. One end of the transmission block (804) passes through the moving rod (801) and is embedded in a spiral groove (805) provided on the outer wall of the transmission shaft (802), and the transmission block (804) and the spiral groove (805) form a sliding fit.

4. A molybdenum heavy metal wastewater recovery device according to claim 2, characterized in that, The driving structure (8) further comprises a rotating tube (809), the rotating tube (809) being rotatably mounted on the bottom end of the inner cavity of the mixing tank (1), a plurality of driving blocks (810) for controlling the rotation of the scraper (7) being fixedly mounted on the outer surface of the bottom end of the moving rod (801), a guide groove (811) being formed on the inner wall of the rotating tube (809), and one end of the driving block (810) being slidably positioned in the guide groove (811); A support tube (812) is fixedly installed at the bottom end of the inner cavity of the mixing tank (1), a telescopic tube (813) is slidably connected to the inner cavity of the support tube (812), and the top end of the telescopic tube (813) is fixedly connected to the moving rod (801), and a telescopic spring (814) is sleeved on the outside of the telescopic tube (813).

5. A molybdenum heavy metal wastewater recovery device according to claim 1, characterized in that, The outer wall of the sedimentation tank (4) is fixedly connected to a sewage pipe (12) for discharging waste residue, and the outer wall of the recovery tank (5) is fixedly connected to a clean water pipe (13) for discharging treated wastewater that meets the standards.

6. A molybdenum heavy metal wastewater recovery device according to claim 1, characterized in that, Three groups of filter plates (14) for further filtering the wastewater are fixedly connected to the inner cavity of the recovery tank (5), and the inner cavities of the three groups of filter plates (14) are all distributed with filter holes, and the three groups of filter plates (14) are distributed in order from large to small according to the hole diameter.

Images