Equipment for recovering molybdenum element in liquid phase

Abstract

The utility model discloses equipment for recovering molybdenum element in liquid phase, which relates to the technical field of heavy metal wastewater treatment, and comprises a reaction kettle and a reaction cavity, the reaction cavity is arranged in the reaction kettle, a liquid inlet pipe is arranged on the outer side of the reaction kettle and is communicated with the reaction cavity, a dripping pipe is arranged at the top of the reaction kettle in a penetrating manner, and the dripping pipe is communicated with the reaction cavity. Wherein one end of the dropwise adding pipe is located in the reaction kettle, the other end of the dropwise adding pipe protrudes out of the reaction kettle, and a feeding assembly is arranged in the dropwise adding pipe. And the stirring blades are driven by the stirring shaft to do uniform circular motion to stir the wastewater containing the molybdenum element to enable the wastewater to flow. Meanwhile, the stirring radius of the special-shaped blades is larger than that of the stirring blades, so that the stirring range can be enlarged, the flowability of the wastewater is higher, and the fed precipitation agent reacts with the molybdenum-containing wastewater more sufficiently. Moreover, the special-shaped blades can rotate along with the stirring shaft to change the distance to the stirring shaft under the action of centrifugal force, so that the stirring range is further flexibly adjusted, and the stirring shaft can be reset under the action of the spring when stopping rotating.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy metal wastewater treatment, in particular to a device for recovering molybdenum elements in a liquid phase. Background Technique

[0002] Molybdenum, as an important strategic metal, has irreplaceable application value in fields such as metallurgy, chemical engineering, aerospace, etc. With the rapid development of industrial production, the recovery and treatment of molybdenum-containing waste liquid have become an important topic in the field of resource recycling. At present, the recovery of molybdenum elements in the liquid phase mainly adopts technical means such as chemical precipitation method, ion exchange method, and solvent extraction method.

[0003] In the prior art, the chemical precipitation method is widely used due to its simple operation and low cost. However, the traditional precipitation reaction device has obvious defects: the uneven distribution of the internal flow field in the reaction kettle leads to insufficient contact between the precipitant and molybdate, resulting in low reaction efficiency; the one-time addition of the precipitant easily causes local supersaturation, resulting in the disordered growth of crystal nuclei and the formation of fine precipitates, making subsequent solid-liquid separation difficult; at the same time, there is a lack of an effective reaction process control mechanism, and it is impossible to dynamically adjust the mixing intensity according to the reaction stage, nor can the stirring range be adjusted. Content of the Utility Model

[0004] To solve the problems mentioned above, the utility model provides the following technical solution: a device for recovering molybdenum elements in a liquid phase, including a reaction kettle and a reaction chamber. The reaction chamber is opened inside the reaction kettle. A liquid inlet pipe is arranged on the outer side of the reaction kettle and is communicated with the reaction chamber. A top cover is fixedly installed on the top of the reaction kettle. A stirring shaft is movably arranged through the top of the top cover. A stirring component is arranged on the outer side of the stirring shaft. The stirring component is divided into two groups and is arranged up and down. A dropping pipe is arranged through the top of the reaction kettle, one end of the dropping pipe is located inside the reaction kettle and the other end protrudes out of the reaction kettle. A feeding component is arranged inside the dropping pipe. A liquid supply pipe is arranged on the outer side of the dropping pipe. A magnetic block is arranged on the stirring component in the upper half of the stirring shaft, and the magnetic block is used in cooperation with the dropping pipe.

[0005] As a preferred technical solution of the utility model, the stirring component includes a stirring blade, a special-shaped blade, and an extension rod. The stirring blade is fixedly installed on the outer side of the stirring shaft and close to the bottom end. The extension rod is fixedly installed on the outer side of the stirring shaft and close to the top cover. The special-shaped blade is movably arranged at the bottom of the extension rod.

[0006] As a preferred technical solution of the utility model, the stirring component further includes an installation groove and a spring column. The installation groove is opened on the bottom surface of the extension rod, and the spring column is fixedly installed on the inner wall of the installation groove.

[0007] As a preferred technical solution of the present utility model, the spring column arranged inside the extension rod is movably connected to the special-shaped blade through a slider, and the spring arranged outside the spring column is in the original length state in the initial state.

[0008] As a preferred technical solution of the present utility model, the feeding assembly includes a rod sleeve, a metal rod, a magnetic sealing cover, and a return spring. The rod sleeve is fixedly installed on the inner wall of the dropping tube. The metal rod penetrates through the rod sleeve and is movably arranged. The magnetic sealing cover is fixedly installed at the bottom end of the metal rod. The return spring is sleeved outside the metal rod, and the return spring is located between the rod sleeve and the magnetic sealing cover. The magnetic block is fixedly installed at one end of the extension rod.

[0009] As a preferred technical solution of the present utility model, a round hole is opened at one end of the dropping tube located inside the reaction chamber. The magnetic sealing cover arranged at one end of the metal rod is adapted to the round hole. The magnetic sealing cover is composed of a rubber round sheet and a round magnetic sheet, and the rubber round sheet seals the round hole.

[0010] As a preferred technical solution of the present utility model, one end of the return spring close to the rod sleeve is fixedly connected to the bottom of the rod sleeve, and the other end is in contact with the magnetic sealing cover. The return spring is in the original length state in the initial state.

[0011] As a preferred technical solution of the present utility model, the magnetic block on the stirring assembly is arranged in parallel with the components in the feeding assembly, and the magnetic poles of the magnetic block are the same as those of the components in the feeding assembly.

[0012] Compared with the prior art, the present utility model provides a device for recovering molybdenum elements in the liquid phase, which has the following beneficial effects:

[0013] 1. In the device for recovering molybdenum elements in the liquid phase, the stirring blades make a uniform circular motion driven by the stirring shaft, stirring the wastewater containing molybdenum elements to make it flow. At the same time, the stirring radius of the special-shaped blades is larger than that of the stirring blades, which can increase the stirring range, make the wastewater more fluid, and make the reaction between the added precipitation agent and the molybdenum-containing wastewater more sufficient. Moreover, the special-shaped blades can rotate with the stirring shaft and change the distance from the stirring shaft under the action of centrifugal force, further flexibly adjusting the stirring range, and can also reset under the action of the spring when the stirring shaft stops rotating.

[0014] 2. The equipment for recovering molybdenum elements in the recycled liquid phase. The liquid supply pipe outside the dropping pipe supplies the reagent at a constant speed, and the regular feeding of the reagent is realized through the interaction between the magnetic block and the magnetic sealing cover when the stirring shaft rotates. When the magnetic block coincides with the magnetic sealing cover, the magnetic sealing cover is separated from the round hole at the bottom of the dropping pipe under the repulsive force, and the reagent is discharged. When the two coincide completely, the reagent release amount is the largest. When the magnetic block and the magnetic sealing cover no longer coincide, the magnetic sealing cover is reset under the action of the return spring to block the round hole, realizing the quantitative feeding of the reagent, avoiding the problem that the one-time addition of the precipitant is likely to cause local supersaturation, resulting in the disordered growth of crystal nuclei and the formation of fine precipitates, and the feeding frequency is related to the rotation speed of the stirring shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic diagram of the equipment for recovering molybdenum elements in the liquid phase of the present utility model;

[0016] Figure 2 FIG. is a schematic diagram of a partial structure of the present utility model Figure 1 ;

[0017] Figure 3 FIG. is a schematic cross-sectional view of the reaction kettle and its partial mechanism in the present utility model;

[0018] Figure 4 FIG. is of the present utility model Figure 3 Schematic enlarged view of the structure of part A in;

[0019] Figure 5 FIG. is a connection diagram of the extension rod and its special-shaped blade in the present utility model;

[0020] Figure 6 FIG. is a schematic cross-sectional view of the extension rod and its special-shaped blade in the present utility model.

[0021] In the figure: 1. Reaction kettle; 2. Liquid inlet pipe; 3. Top cover; 4. Stirring shaft; 5. Dropping pipe; 6. Reaction chamber; 7. Stirring blade; 8. Special-shaped blade; 9. Extension rod; 10. Metal rod; 11. Liquid supply pipe; 12. Return spring; 13. Magnetic block; 14. Rod sleeve; 15. Magnetic sealing cover; 16. Spring column; 17. Installation groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 - 6, The present utility model discloses a device for recovering molybdenum elements in a liquid phase, including a reaction kettle 1 and a reaction chamber 6. The reaction chamber 6 is opened inside the reaction kettle 1. A liquid inlet pipe 2 is arranged on the outer side of the reaction kettle 1 and is communicated with the reaction chamber 6. A top cover 3 is fixedly installed on the top of the reaction kettle 1. A stirring shaft 4 is movably arranged through the top of the top cover 3. A stirring assembly is arranged on the outer side of the stirring shaft 4. The stirring assembly is divided into two groups and is arranged up and down. A dropping pipe 5 is arranged through the top of the reaction kettle 1. One end of the dropping pipe 5 is located inside the reaction kettle 1 and the other end protrudes out of the reaction kettle 1. A feeding assembly is arranged inside the dropping pipe 5. A liquid supply pipe 11 is arranged on the outer side of the dropping pipe 5. A magnetic block 13 is arranged on the stirring assembly located in the upper half of the stirring shaft 4. The magnetic block 13 is used in cooperation with the dropping pipe 5;

[0024] The magnetic block 13 on the stirring assembly is arranged in parallel with the components in the feeding assembly, and the magnetic pole of the magnetic block 13 is the same as that of the components in the feeding assembly.

[0025] When the device is in use, the driving device drives the stirring shaft 4 to rotate to drive the stirring assembly to stir the wastewater containing molybdenum elements in the reaction chamber 6. The driving device is a motor, and its specific installation method can refer to the installation method of the utility model patent with the publication number of CN219424385U, "One end of the first stirring rod is fixedly connected to the output end of the motor through a coupling." The stirring shaft 4 makes a uniform circular motion under the drive of the motor;

[0026] When the stirring shaft 4 rotates, it will drive the extension rod 9 and the top cover 3 to rotate together. Since the magnetic block 13 arranged on the stirring assembly coincides with the magnetic sealing cover 15 in the feeding assembly when making a circular motion, it realizes the control of the feeding assembly to put the precipitation agent stored inside the dropping pipe 5 into the reaction chamber 6, and then realizes the precipitation reaction with the wastewater containing molybdenum elements.

[0027] Specifically, the stirring assembly includes a stirring blade 7, a special-shaped blade 8, and an extension rod 9. The stirring blade 7 is fixedly installed on the outer side of the stirring shaft 4 and is close to the bottom end. The extension rod 9 is fixedly installed on the outer side of the stirring shaft 4 and is close to the top cover 3. The special-shaped blade 8 is movably arranged at the bottom of the extension rod 9;

[0028] The stirring assembly further includes an installation groove 17 and a spring column 16. The installation groove 17 is opened on the bottom surface of the extension rod 9. The spring column 16 is fixedly installed on the inner wall of the installation groove 17;

[0029] The spring column 16 arranged inside the extension rod 9 is movably connected with the special-shaped blade 8 through a slider. The spring arranged on the outer side of the spring column 16 is in the original length state in the initial state.

[0030] In this embodiment, the stirring blade 7 makes a uniform circular motion driven by the stirring shaft 4, thereby stirring the wastewater containing molybdenum elements to keep it in a flowing state. Since the feeding assembly realizes regular feeding under the action of the extension rod 9 and the magnetic block 13, the precipitant stored in the dropping tube 5 is put into the wastewater containing molybdenum elements and precipitated under the stirring of the stirring blade 7. The special-shaped blade 8 arranged at the bottom of the extension rod 9 also stirs the wastewater containing molybdenum elements. Since the stirring radius of the special-shaped blade 8 is larger than that of the stirring blade 7, the stirring range of the wastewater in the entire reaction chamber 6 is larger and the fluidity is stronger, making the reaction between the added precipitation agent and the wastewater containing molybdenum elements more sufficient;

[0031] The special-shaped blade 8 arranged at the bottom end of the extension rod 9 functions to change the stirring range. As the stirring shaft 4 rotates, the special-shaped blade 8 is subjected to an outward centrifugal force. At this time, the slider at the top end of the special-shaped blade 8 slides outward inside the installation groove 17. The reverse elastic force of the spring on the spring column 16 is less than the centrifugal force, so that the distance between the special-shaped blade 8 and the stirring shaft 4 can be changed to realize the change of the stirring range. The outward adjustment distance of the special-shaped blade 8 is related to the rotation speed of the stirring shaft 4. When the stirring shaft 4 stops rotating, the special-shaped blade 8 resets under the action of the elastic potential energy of the spring outside the spring column 16.

[0032] Specifically, the feeding assembly includes a rod sleeve 14, a metal rod 10, a magnetic sealing cover 15, and a return spring 12. The rod sleeve 14 is fixedly installed on the inner wall of the dropping tube 5. The metal rod 10 penetrates through the rod sleeve 14 and is movably arranged. The magnetic sealing cover 15 is fixedly installed at the bottom end of the metal rod 10. The return spring 12 is sleeved outside the metal rod 10. The return spring 12 is located between the rod sleeve 14 and the magnetic sealing cover 15. The magnetic block 13 is fixedly installed at one end of the extension rod 9;

[0033] A round hole is opened at one end of the dropping tube 5 located inside the reaction chamber 6. The magnetic sealing cover 15 arranged at one end of the metal rod 10 is adapted to the round hole. The magnetic sealing cover 15 is composed of a rubber disc and a circular magnetic sheet, and the rubber disc seals the round hole.

[0034] In this implementation scheme, a rod sleeve 14 is provided to limit and install the metal rod 10. The metal rod 10 can perform telescopic movement along the round hole at the top of the rod sleeve 14. The magnetic sealing cover 15 serves to block the round hole at the bottom of the dropping tube 5. It should be noted that the feeding components are all made of corrosion-resistant materials. Next, a specific description will be given on how the feeding components achieve the feeding of the medicament. Among them, the liquid supply pipe 11 externally connected to the outside of the dropping tube 5 always supplies the medicament to the inside of the dropping tube 5 at a constant speed, and its conveying speed is less than the discharging speed of the round hole at the bottom of the dropping tube 5. When the stirring shaft 4 rotates one week, the magnetic block 13 provided at one end of the extension rod 9 will respectively coincide with the feeding components symmetrically arranged at the top of the reaction kettle 1 for a short time. During the process of the two magnetic blocks 13 approaching the circular magnetic sheet at the bottom of the magnetic sealing cover 15, they will both be subjected to repulsive forces. Among them, the reverse elastic force of the return spring 12 is less than the repulsive force of the magnetic block 13 on the magnetic sealing cover 15. Therefore, the magnetic sealing cover 15 will gradually move towards the direction close to the rod sleeve 14 and separate from the round hole. Therefore, the medicament stored inside the dropping tube 5 will gradually be discharged from the round hole. When the magnetic block 13 completely coincides with the magnetic sealing cover 15, the repulsive force received by the magnetic sealing cover 15 is the largest. At this time, the gap between the magnetic sealing cover 15 and the round hole is the largest, so that the release amount of the medicament reaches the maximum, and then it will gradually decrease. When the magnetic block 13 no longer coincides with the magnetic sealing cover 15, the magnetic sealing cover 15 is pulled back to its original position under the action of the elastic potential energy of the return spring 12 to block the round hole. The rod sleeve 14 limits and guides the metal rod 10, so as to ensure that the magnetic sealing cover 15 always performs telescopic movement on the same straight line.

[0035] Specifically, one end of the return spring 12 close to the rod sleeve 14 is fixedly connected to the bottom of the rod sleeve 14, and the other end is attached to the magnetic sealing cover 15. The initial state of the return spring 12 is in its original length state.

[0036] In this implementation scheme, a return spring 12 is sleeved outside the metal rod 10 to reset the magnetic sealing cover 15, so as to realize the quantitative feeding of the medicament in the dropping tube 5. It should be supplemented and explained that the amount of the medicament unit realized for feeding is related to the rotation speed of the stirring shaft 4. The faster the rotation speed, the faster the feeding frequency, and vice versa.

[0037] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to this process, method, article or device. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0038] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for recovering molybdenum in a liquid phase, comprising a reactor (1) and a reaction chamber (6), wherein the reaction chamber (6) is disposed inside the reactor (1), and wherein: The reactor (1) is provided with a liquid inlet pipe (2) on the outside thereof and is connected to the reaction chamber (6). A top cover (3) is fixedly mounted on the top of the reactor (1). A stirring shaft (4) is movably provided through the top of the top cover (3). A stirring assembly is provided on the outside of the stirring shaft (4). The stirring assembly is provided in two groups arranged up and down. A dripping tube (5) is provided on the top of the reactor (1). One end of the dripping tube (5) is located inside the reactor (1) and the other end protrudes out of the reactor (1). A delivery assembly is provided inside the dripping tube (5). A liquid supply pipe (11) is provided on the outside of the dripping tube (5). A magnetic block (13) is provided on the stirring assembly located on the upper half of the stirring shaft (4). The magnetic block (13) is used in conjunction with the dripping tube (5).

2. The device for recovering molybdenum in liquid phase according to claim 1, characterized in that: The stirring assembly comprises a stirring blade (7), a special-shaped blade (8), and an extension rod (9); the stirring blade (7) is fixedly mounted on the outside of the stirring shaft (4) and close to the bottom end; the extension rod (9) is fixedly mounted on the outside of the stirring shaft (4) and close to the top cover (3); and the special-shaped blade (8) is movably arranged at the bottom of the extension rod (9).

3. The device for recovering molybdenum in liquid phase according to claim 2, characterized in that: The stirring assembly further comprises a mounting groove (17) and a spring column (16); the mounting groove (17) is formed on the bottom surface of the extension rod (9); and the spring column (16) is fixedly mounted on the inner wall of the mounting groove (17).

4. The device for recovering molybdenum in liquid phase according to claim 3, characterized in that: The spring column (16) disposed inside the extension rod (9) is movably connected to the special-shaped blade (8) via a slider, and the spring disposed outside the spring column (16) is initially in an original length state.

5. The device for recovering molybdenum in liquid phase according to claim 1, characterized in that: The delivery assembly comprises a rod sleeve (14), a metal rod (10), a magnetic sealing cover (15), and a return spring (12); the rod sleeve (14) is fixedly mounted on the inner wall of the drip tube (5); the metal rod (10) penetrates the rod sleeve (14) and is movably arranged; the magnetic sealing cover (15) is fixedly mounted on the bottom end of the metal rod (10); the return spring (12) is sleeved on the outside of the metal rod (10); the return spring (12) is located between the rod sleeve (14) and the magnetic sealing cover (15); and the magnetic block (13) is fixedly mounted on one end of the extension rod (9).

6. The device for recovering molybdenum in liquid phase according to claim 5, characterized in that: A circular hole is formed at one end of the dropper tube (5) located inside the reaction chamber (6), and a magnetic sealing cover (15) provided at one end of the metal rod (10) is adapted to the circular hole, wherein the magnetic sealing cover (15) is composed of a rubber disc and a circular magnetic disc, and the rubber disc seals the circular hole.

7. The device for recovering molybdenum in liquid phase according to claim 5, characterized in that: One end of the return spring (12) close to the rod sleeve (14) is fixedly connected to the bottom of the rod sleeve (14), and the other end is in contact with the magnetic sealing cover (15). The initial state of the return spring (12) is in the original length state.

8. The device for recovering molybdenum in liquid phase according to claim 1, characterized in that: The magnetic block (13) on the stirring component is arranged in parallel with the component in the delivery component, wherein the magnetic pole of the magnetic block (13) is the same as the magnetic pole of the component in the delivery component.

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