A device for extracting crude iodine from brine evaporation mother liquor

Abstract

The invention discloses a device for extracting crude iodine from a salt water evaporation mother liquor, and relates to the technical field of extracting crude iodine from a salt water evaporation mother liquor. The device comprises an extraction box, and also comprises: a feeding mechanism, which is installed on the top of the extraction box; and a stirring mechanism, which is installed inside the extraction box and is used for stirring the internal solution. The device is provided with an iodine mud fine processing mechanism, and the iodine mud is scraped into a discharge hole by extrusion and rotation, so that the iodine mud forms a specified size, and then the metal bristles of the brushing mechanism are used to further crush the emerged iodine mud into smaller particles, so that the solution is fully in contact with the iodine mud particles, so as to improve the dissolution speed and dissolution efficiency, avoid the situation that the dissolution time is long and the efficiency is low due to the difficulty of large-particle iodine mud to penetrate, and greatly improve the dissolution processing efficiency. The iodine mud fine processing mechanism and the brushing mechanism are switched to the working state of anti-corrosion processing through a lifting mechanism, so as to reduce the corrosion of the solution to parts.

Description

Technical Field

[0001] The invention relates to the technical field of crude iodine extraction from brine evaporation mother liquor, and in particular to equipment for extracting crude iodine from brine evaporation mother liquor. Background Art

[0002] Iodine is an important chemical raw material, a basic raw material for the manufacture of inorganic or organic iodides, and an essential nutrient element for humans and plants. It plays an important role in the national economy and is widely used in national defense and cutting-edge technology. It is a scarce resource worldwide. Zinc oxide contains a certain amount of iodine. In the previous production process, iodine circulated in the brine multi-effect evaporation system and eventually entered the salt product, which not only caused a waste of iodine resources, but also affected the salt content. Therefore, it is necessary to extract iodine from the brine evaporation mother liquor to recover iodine resources.

[0003] The secondary zinc oxide extraction is rinsed with alkali adjustment and zinc precipitation to obtain high-salt rinse water. After the rinse water is subjected to the process of removing weight and thallium, it enters the multi-effect evaporation system for crystallization. After centrifugation, industrial-grade potassium salt and sodium salt are produced. The centrifuged mother liquor water can be regarded as an iodine-rich solution and can be used to extract crude iodine. Hydrochloric acid and hydrogen peroxide are added to the mother liquor water to precipitate iodine. After filtration, iodine mud is obtained. Liquid alkali is added to the iodine mud for purification. After filtration, hydrochloric acid and hydrogen peroxide are continuously added to the filtrate for secondary iodine precipitation. The filter residue obtained after filtration again is crude iodine.

[0004] When purifying a large amount of iodine mud, it is necessary to stir it so that the iodine mud is fully in contact with the solution. However, during the stirring process, the particles of the iodine mud are large, and it takes a certain amount of time for the solution to penetrate. Complete penetration and dissolution takes a long time, and the efficiency is relatively low. Summary of the invention

[0005] The present invention provides a device for extracting crude iodine from brine evaporation mother liquor to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for extracting crude iodine from a salt water evaporation mother liquor comprises an extraction box and also comprises:

[0008] A feeding mechanism, which is installed on the top of the extraction box;

[0009] A stirring mechanism, which is installed inside the extraction box and is used to stir the solution inside;

[0010] An iodine mud fine processing mechanism, which is installed at the bottom of the stirring mechanism and is used to follow the rotation of the stirring mechanism to pressurize and filter the iodine mud below;

[0011] A brushing and spreading mechanism, which is installed on the top of the iodine mud fine processing mechanism and is used to brush and spread the material filtered by the iodine mud fine processing mechanism under pressure and to block the discharge hole of the iodine mud fine processing mechanism;

[0012] A lifting mechanism, which is installed on the top of the extraction box and connected to the stirring mechanism, and is used to drive the stirring mechanism and the iodine mud fine processing mechanism to move when adding materials;

[0013] A driving mechanism, which is installed on the top of the extraction box and connected to the lifting mechanism and the stirring mechanism, and drives the lifting mechanism and the stirring mechanism to operate respectively;

[0014] The stirring mechanism comprises a rotating shaft, a plurality of spring grooves are formed on the top of the rotating shaft, a spring 1 is fixed to the inner wall of the top of the spring groove, a slider 1 is fixed to the bottom of the spring 1, a set of the sliders is arranged inside the spring groove, a mounting ring is fixed to the outside of two sliders 1, a one-way gear 1 is installed on the outside of the mounting ring, and a plurality of stirring rods are fixed to the outside of the rotating shaft;

[0015] The iodine mud fine processing mechanism includes two slide grooves 1 opened on the surface of the rotating shaft, a spring protection cylinder is fixed on the top inner wall of the slide groove 1, a spring 2 is fixed on the top inner wall of the spring protection cylinder, a piston rod is sleeved inside the spring protection cylinder, the bottom end of the spring 2 is fixedly connected to the piston rod, an air outlet channel is opened inside the rotating shaft, the air outlet channel is connected to the two spring protection cylinders, a slider 2 is fixed to the bottom end of the piston rod, the slider 2 is sleeved inside the slide groove 1, a circular plate is fixed outside the plurality of sliders 2, a plurality of discharge holes are opened on the circular plate, and a plurality of loose material protrusions are fixed on the bottom of the circular plate.

[0016] Furthermore, the extraction box comprises a barrel box, a support frame is fixed to the bottom of the barrel box, a valve pipeline is connected to the bottom of the barrel box, and two top plates are fixed to the top of the barrel box.

[0017] Furthermore, the feeding mechanism comprises two mounting grooves opened on the top of the barrel box, a feeding hopper is fixed inside the mounting groove, and a sliding block is fixed on the inner wall of the feeding hopper.

[0018] Furthermore, the brush spreading mechanism includes a circular ring rotatably connected to the top of the circular plate, a plurality of bristle fixing plates are fixed to the outer wall of the circular ring, metal bristles are fixed to the bottom of the bristle fixing plates, a plurality of slide grooves 2 are opened on the inner wall of the barrel box, and the bristle fixing plates are sleeved inside the slide grooves 2.

[0019] Furthermore, the lifting mechanism includes a reciprocating screw rotatably connected to the top of one of the top plates, a one-way gear 2 is installed on the outside of the reciprocating screw, a movable plate is sleeved on the external thread of the reciprocating screw, a guide rod is sleeved on the inside of the movable plate, the bottom end of the guide rod is fixed to the top of the top plate below the reciprocating screw, and the movable plate is rotatably connected to the top of the rotating shaft.

[0020] Furthermore, the driving mechanism includes a motor fixed to the top of the top plate at the bottom of the reciprocating screw, a gear 1 is fixed to the top of the output shaft of the motor, one side of the gear 1 is meshed with the one-way gear 1 that moves down, and the other side of the gear 1 is meshed with the one-way gear 2, a connecting rod is fixed to the top of the gear 1, a gear 2 is fixed to the top of the connecting rod, and the gear 2 is meshed with the one-way gear 2 that moves up, and the motor, gear 1, connecting rod and gear 2 are not on the same vertical plane as the moving plate, so that the motor, gear 1, connecting rod and gear 2 will not hinder the moving plate from moving up and down.

[0021] Furthermore, a controller is fixed to the outside of the barrel box, and the controller is electrically connected to the motor.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention installs an iodine mud fine processing mechanism to scrape the iodine mud into a discharge hole by extrusion and rotation, so that the iodine mud is formed into a specified size, and then uses the metal bristles of the brushing mechanism to further crush the emerged iodine mud into smaller particles, so that the solution is fully in contact with the iodine mud particles, thereby improving the dissolution speed and dissolution efficiency, avoiding the situation where the large particles of iodine mud are difficult to penetrate and resulting in a long dissolution time and low efficiency, and greatly improving the dissolution processing efficiency. The iodine mud fine processing mechanism and the brushing mechanism are switched to an anti-corrosion processing working state through a lifting mechanism, thereby reducing the corrosion of the solution to parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention provides a schematic diagram of the structure of a stirring mechanism for extracting crude iodine from a brine evaporation mother liquor.

[0025] Figure 2 This is a schematic diagram of the driving mechanism structure of a device for extracting crude iodine from brine evaporation mother liquor proposed by the present invention.

[0026] Figure 3 This is a side structural schematic diagram of a device for extracting crude iodine from brine evaporation mother liquor proposed by the present invention.

[0027] Figure 4 for Figure 3 Schematic diagram of the AA cross-section structure.

[0028] Figure 5The present invention provides a schematic diagram of the top view of the structure of the iodine mud fine processing mechanism of the equipment for extracting crude iodine from the brine evaporation mother liquor.

[0029] Figure 6 This is a schematic diagram of the structure of the iodine mud fine processing mechanism of the equipment for extracting crude iodine from the brine evaporation mother liquor proposed by the present invention, viewed from above.

[0030] Figure 7 for Figure 4 Enlarged structural diagram at point A.

[0031] Figure 8 for Figure 4 Enlarged structural diagram at point B.

[0032] In the figure: 1. Extraction box; 11. Cylinder box; 12. Support frame; 13. Valve pipe; 14. Top plate; 2. Feeding mechanism; 21. Feeding hopper; 22. Sliding block; 3. Stirring mechanism; 31. Rotating shaft; 32. Spring groove; 33. Spring 1; 34. Sliding block 1; 35. Mounting ring; 36. One-way gear 1; 37. Stirring rod; 4. Iodine mud fine processing mechanism; 41. Sliding groove 1; 42. Spring protection cylinder; 43. Spring 2; 44 , piston rod; 45, slider 2; 46, circular plate; 47, discharge hole; 48, loose material bump; 49, air outlet channel; 5, brushing mechanism; 51, slide 2; 52, brush fixing plate; 53, metal brush; 54, ring; 6, lifting mechanism; 61, reciprocating screw; 62, one-way gear 2; 63, moving plate; 64, guide rod; 7, driving mechanism; 71, motor; 72, gear 1; 73, connecting rod; 74, gear 2. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] Example: Refer to Figure 1-Figure 8 : A device for extracting crude iodine from a salt water evaporation mother liquor, comprising an extraction box 1, and also comprising:

[0037] A feeding mechanism 2, which is installed on the top of the extraction box 1;

[0038] A stirring mechanism 3, which is installed inside the extraction box 1 and is used to stir the solution inside;

[0039] An iodine mud fine processing mechanism 4 is installed at the bottom of the stirring mechanism 3 and is used to follow the rotation of the stirring mechanism 3 to pressurize and filter the iodine mud below;

[0040] A brushing and spreading mechanism 5 is installed on the top of the iodine mud fine processing mechanism 4, and is used to brush and spread the material filtered by the iodine mud fine processing mechanism 4 under pressure, and to block the discharge hole 47 of the iodine mud fine processing mechanism 4;

[0041] A lifting mechanism 6 is installed on the top of the extraction box 1 and is connected to the stirring mechanism 3, and is used to drive the stirring mechanism 3 and the iodine mud fine processing mechanism 4 to move when adding materials;

[0042] The driving mechanism 7 is installed on the top of the extraction box 1, and is connected with the lifting mechanism 6 and the stirring mechanism 3, and drives the lifting mechanism 6 and the stirring mechanism 3 to operate respectively.

[0043] The extraction box 1 comprises a barrel box 11 , a support frame 12 is fixed to the bottom of the barrel box 11 , a valve pipeline 13 is connected to the bottom of the barrel box 11 , and two top plates 14 are fixed to the top of the barrel box 11 .

[0044] The iodine mud fine processing mechanism 4 includes two chutes 41 provided on the surface of the rotating shaft 31, a spring protection cylinder 42 is fixed to the top inner wall of the chutes 41, a spring 2 43 is fixed to the top inner wall of the spring protection cylinder 42, a piston rod 44 is sleeved inside the spring protection cylinder 42, the bottom end of the spring 2 43 is fixedly connected to the piston rod 44, an air outlet channel 49 is provided inside the rotating shaft 31, the air outlet channel 49 is connected to the two spring protection cylinders 42, a slider 2 45 is fixed to the bottom end of the piston rod 44, the slider 2 45 is sleeved inside the chutes 41, a plurality of sliders 45 are fixed outside with a circular plate 46, a plurality of discharge holes 47 are provided on the circular plate 46, and a plurality of loose material protrusions 48 are fixed to the bottom of the circular plate 46;

[0045] The brush spreading mechanism 5 includes a circular ring 54 rotatably connected to the top of the circular plate 46, a plurality of bristle fixing plates 52 are fixed to the outer wall of the circular ring 54, metal bristles 53 are fixed to the bottom of the bristle fixing plates 52, a plurality of slide grooves 51 are opened on the inner wall of the barrel box 11, and the bristle fixing plates 52 are sleeved inside the slide grooves 51.

[0046] The feeding mechanism 2 includes two mounting grooves opened on the top of the barrel box 11, a feeding hopper 21 is fixed inside the mounting groove, and a sliding block 22 is fixed on the inner wall of the feeding hopper 21; the feeding mechanism 2 is used for feeding below and above the net iodine mud fine processing mechanism 4.

[0047] The stirring mechanism 3 includes a rotating shaft 31, a plurality of spring grooves 32 are provided on the top of the rotating shaft 31, a spring 33 is fixed to the inner wall of the top of the spring groove 32, a slider 34 is fixed to the bottom of the spring 33, the slider 34 is sleeved inside the spring groove 32, a mounting ring 35 is fixed to the outside of the two sliders 34, a one-way gear 36 is installed on the outside of the mounting ring 35, and a plurality of stirring rods 37 are fixed to the outside of the rotating shaft 31;

[0048] The stirring mechanism 3 stirs the added solution so that the solution drives the iodine mud particles to rotate and the solution is in full contact with the iodine mud to dissolve it.

[0049] The lifting mechanism 6 includes a reciprocating screw 61 rotatably connected to the top of one of the top plates 14, a one-way gear 2 62 is installed on the outside of the reciprocating screw 61, a moving plate 63 is sleeved on the external thread of the reciprocating screw 61, a guide rod 64 is sleeved inside the moving plate 63, the bottom end of the guide rod 64 is fixed to the top of the top plate 14 below the reciprocating screw 61, and the moving plate 63 is rotatably connected to the top of the rotating shaft 31;

[0050] The iodine mud fine processing mechanism 4 scrapes the iodine mud into the discharge hole by extrusion and rotation, so that the iodine mud forms a specified size, and then uses the metal bristles of the brushing mechanism 5 to further crush the emerging iodine mud into smaller particles, so that the solution and the iodine mud particles are fully in contact, thereby improving the dissolution speed and dissolution efficiency, avoiding the situation where the large particles of iodine mud are difficult to penetrate and the resulting long dissolution time and low efficiency, and greatly improving the dissolution processing efficiency. The iodine mud fine processing mechanism 4 and the brushing mechanism 5 are switched to the anti-corrosion processing working state through the lifting mechanism 6, thereby reducing the corrosion of the solution to the parts.

[0051] The driving mechanism 7 includes a motor 71 fixed to the top of the top plate 14 at the bottom of the reciprocating screw 61, a gear 1 72 is fixed to the top of the output shaft of the motor 71, one side of the gear 1 72 is meshed with the one-way gear 1 36 that moves down, and the other side of the gear 1 72 is meshed with the one-way gear 2 62, a connecting rod 73 is fixed to the top of the gear 1 72, a gear 2 74 is fixed to the top of the connecting rod 73, and the gear 2 74 is meshed with the one-way gear 2 62 that moves up, the motor 71, gear 1 72, connecting rod 73 and gear 2 74 are not on the same vertical plane as the moving plate 63, so that the motor 71, gear 1 72, connecting rod 73 and gear 2 74 will not hinder the moving plate 63 from moving up and down.

[0052] A controller is fixed to the outside of the barrel box 11 , and the controller is electrically connected to the motor 71 .

[0053] Working principle:

[0054] First, iodine mud is added into the barrel box 11 through the feeding hopper 21 and the sliding block 22, and then the motor 71 is started through the controller, and the motor 71 drives the gear 1 72 to reverse, and the reverse rotation of the gear 1 72 satisfies the direction of the rotation of the one-way gear 2 62 to drive the reciprocating screw 61, and the reciprocating screw 61 rotates and drives the movable plate 63 to move downward, and the movable plate 63 moves downward to drive the rotating shaft 31, the slider 1 34, the spring 1 33, the mounting ring 35, the one-way gear 1 36, the stirring rod 37, the iodine mud fine processing mechanism 4 and the brushing mechanism 5 to move downward. When moving downward, because the motor 71, the gear 1 72, the connecting rod 73 and the gear 2 74 are not on the same vertical plane as the movable plate 63, the motor 71, the gear 1 72, the connecting rod 73 and the gear 2 74 will not hinder the up and down movement of the movable plate 63, and the one-way gear 1 36 and the gear 2 74 are disengaged, and the circle After the bottom of the plate 46 contacts the iodine mud, the spring 2 43 at the top is compressed, so that the piston rod 44 is collected in the interior of the spring protection tube 42, and the gas in the spring protection tube 42 is discharged through the air outlet channel 49. The discharge of the gas can prevent the gas in the spring protection tube 42 from affecting the up and down movement of the piston rod 44. After the movable plate 63 moves to the silk tail at the bottom of the reciprocating screw 61, the motor 71 is turned off. If the one-way gear 1 36 cannot directly mesh with the gear 1 72 in the rotating process when moving downward, it will be limited by the top of the gear 1 72, so the one-way gear 1 36 will cause the mounting ring 35 and the slider 1 34 to squeeze the spring 1 33. When the teeth of the one-way gear 1 36 are relative to the grooves of the gear 1 72, the spring 1 33 will push the slider 1 34, the mounting ring 35 and the one-way gear 1 36 to move downward, so that the one-way gear 1 36 is meshed with the gear 1 72.

[0055] Then, the solution is added to the barrel box 11 through the feeding hopper 21, and then the motor 71 is started to drive the gear 1 72 to rotate forward. The forward rotation of the gear 1 72 satisfies the direction of rotation of the one-way gear 1 36 to drive the mounting ring 35 to rotate, so the mounting ring 35 drives the rotating shaft 31 to rotate through the slider 1 34, and the rotation of the rotating shaft 31 drives the stirring rod 37, the circular plate 46 and the loosening protrusion 48 to rotate. The stirring rod 37 stirs the solution, and the loosening protrusion 48 relaxes the top layer of the iodine mud under the circular plate 46 when rotating. The relaxed iodine mud particles are smaller and easier to enter the discharge hole 47. The circular plate 46 When the mud is squeezed and rotated, the iodine mud will be scraped into the discharge hole 47, and then emerge through the discharge hole 47. The discharge hole 47 isolates large particles, squeezes and scrapes them into broken mud, and then emerges to contact with the solution. During the rotation of the circular plate 46, the metal bristles 53 are stationary, so the metal bristles 53 will further brush the iodine mud emerging from the circular plate 46 into smaller particles, avoiding the situation where the iodine mud accumulated together or the larger particles of iodine mud require a long time to penetrate and dissolve the solution, shortening the dissolution time and improving the dissolution efficiency. The length of the metal bristles 53 is greater than the distance between the bristle fixing plate 52 and the circular plate 46. The height between the plates 46 is such that the metal bristles 53 are bent when in contact with the top of the circular plate 46 and are vertical when extending into the discharge hole 47, so the blockage of the discharge hole 47 can be cleared to avoid blockage of the discharge hole 47. The rotating solution can drive the small particles of iodine mud to rotate and fully contact the iodine mud to dissolve it. When the iodine mud under the circular plate 46 is processed, the solution completely dissolves the iodine mud and then starts the motor 71 to drive the gear 72 to reverse. The gear 72 reverses to make the moving plate 63 moved to the silk tail drive the rotating shaft 31, the slider 34, and the spring 3 3. The mounting ring 35, the one-way gear 1 36, the stirring rod 37, the iodine mud fine processing mechanism 4 and the brushing mechanism 5 are moved up and reset. If the one-way gear 1 36 cannot directly mesh with the gear 2 74 in the rotating process during the resetting process, it will be limited by the bottom of the gear 2 74. Then, the one-way gear 1 36 will cause the mounting ring 35 and the slider 1 34 to pull the spring 1 33. When the teeth of the one-way gear 1 36 are opposite to the groove of the gear 2 74, the spring 1 33 will push the slider 1 34, the mounting ring 35 and the one-way gear 1 36 to move up, so that the one-way gear 1 36 meshes with the gear 2 74.

[0056] Then continue to start the motor 71 to drive gear 1 72, connecting rod 73 and gear 2 74 to rotate forward. The forward rotation of gear 2 74 causes the one-way gear 1 36 to drive the mounting ring 35 to rotate. Then the mounting ring 35 drives the rotating shaft 31 to rotate through the slider 1 34. The rotation of the rotating shaft 31 drives the stirring rod 37, the circular plate 46 and the loose material protrusion 48 to rotate, so as to shake off the liquid on the surface and reduce the corrosion effect on the structure. Then, during the rotation process, the length of the metal bristles 53 is greater than the height between the bristle fixing plate 52 and the circular plate 46, so the metal bristles 53 are bent when contacting the top of the circular plate 46, and are vertical when extending into the discharge hole 47. In this state, continuous extension and bending will cause the metal bristles 53 to eject the residual liquid inside itself, reducing the corrosion effect on the metal bristles 53, and also sweep away part of the liquid on the top of the circular plate 46 and inside the discharge hole 47, reducing the corrosion effect on the circular plate 46, and then the dissolved iodine mud and liquid are discharged through the valve pipe 13.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An extraction device for crude iodine in brine evaporation mother liquor, comprising an extraction box (1), characterized in that: Also includes: A feeding mechanism (2), wherein the feeding mechanism (2) is installed on the top of the extraction box (1); A stirring mechanism (3), the stirring mechanism (3) being installed inside the extraction box (1) and used for stirring the solution inside; An iodine mud fine processing mechanism (4), the iodine mud fine processing mechanism (4) being installed at the bottom of the stirring mechanism (3) and being used to rotate with the stirring mechanism (3) to pressurize and filter the iodine mud below; A brushing and spreading mechanism (5), the brushing and spreading mechanism (5) being installed on the top of the iodine mud fine processing mechanism (4), and being used to brush and spread the material filtered by the iodine mud fine processing mechanism (4) under pressure, and to remove the blockage of the material outlet hole (47) of the iodine mud fine processing mechanism (4); A lifting mechanism (6), the lifting mechanism (6) being installed on the top of the extraction box (1) and connected to the stirring mechanism (3), and being used to drive the stirring mechanism (3) and the iodine mud fine processing mechanism (4) to move when adding materials; A driving mechanism (7), wherein the driving mechanism (7) is installed on the top of the extraction box (1), and is connected to the lifting mechanism (6) and the stirring mechanism (3), and drives the lifting mechanism (6) and the stirring mechanism (3) to operate respectively; The stirring mechanism (3) comprises a rotating shaft (31), a plurality of spring grooves (32) are formed on the outside of the top end of the rotating shaft (31), a spring (33) is fixed to the inner wall of the top of the spring groove (32), a slider (34) is fixed to the bottom end of the spring (33), the slider (34) is sleeved inside the spring groove (32), mounting rings (35) are fixed to the outside of two sliders (34), a one-way gear (36) is mounted on the outside of the mounting ring (35), and a plurality of stirring rods (37) are fixed to the outside of the rotating shaft (31); The iodine mud fine processing mechanism (4) comprises two slide grooves (41) provided on the surface of the rotating shaft (31); a spring protection tube (42) is fixed to the top inner wall of the slide groove (41); a spring (43) is fixed to the top inner wall of the spring protection tube (42); a piston rod (44) is sleeved inside the spring protection tube (42); the bottom end of the spring (43) is fixedly connected to the piston rod (44); an air outlet channel (49) is provided inside the rotating shaft (31); the air outlet channel (49) is connected to the two spring protection tubes (42); a slider (45) is fixed to the bottom end of the piston rod (44); the slider (45) is sleeved inside the slide groove (41); a plurality of circular plates (46) are fixed outside the plurality of sliders (45); a plurality of discharge holes (47) are provided on the circular plate (46); a plurality of loosening protrusions (48) are fixed to the bottom of the circular plate (46); The extraction box (1) comprises a barrel box (11), a support frame (12) is fixed to the bottom of the barrel box (11), a valve pipeline (13) is connected to the bottom of the barrel box (11), and two top plates (14) are fixed to the top of the barrel box (11).

2. The equipment for extracting crude iodine from brine evaporation mother liquor according to claim 1, characterized in that: The feeding mechanism (2) comprises two installation grooves opened on the top of the barrel box (11), a feeding hopper (21) is fixed inside the installation groove, and a sliding block (22) is fixed on the inner wall of the feeding hopper (21).

3. The equipment for extracting crude iodine from brine evaporation mother liquor according to claim 2, characterized in that: The brush spreading mechanism (5) comprises a circular ring (54) rotatably connected to the top of the circular plate (46); a plurality of bristle fixing plates (52) are fixed to the outer wall of the circular ring (54); metal bristles (53) are fixed to the bottom of the bristle fixing plates (52); a plurality of second slide grooves (51) are formed on the inner wall of the barrel box (11); and the bristle fixing plates (52) are sleeved inside the second slide grooves (51).

4. The equipment for extracting crude iodine from brine evaporation mother liquor according to claim 3, characterized in that: The lifting mechanism (6) comprises a reciprocating screw (61) rotatably connected to the top of one of the top plates (14); a one-way gear 2 (62) is installed on the outside of the reciprocating screw (61); a moving plate (63) is sleeved on the external thread of the reciprocating screw (61); a guide rod (64) is sleeved on the inside of the moving plate (63); the bottom end of the guide rod (64) is fixed to the top of the top plate (14) below the reciprocating screw (61); and the moving plate (63) is rotatably connected to the top of the rotating shaft (31).

5. The equipment for extracting crude iodine from brine evaporation mother liquor according to claim 4, characterized in that: The driving mechanism (7) comprises a motor (71) fixed to the top of the top plate (14) at the bottom of the reciprocating screw rod (61); a gear 1 (72) is fixed to the top of the output shaft of the motor (71); one side of the gear 1 (72) meshes with the one-way gear 1 (36) that moves down; the other side of the gear 1 (72) meshes with the one-way gear 2 (62); a connecting rod (73) is fixed to the top of the gear 1 (72); a gear 2 (74) is fixed to the top of the connecting rod (73); the gear 2 (74) meshes with the one-way gear 2 (62) that moves up; the motor (71), gear 1 (72), connecting rod (73) and gear 2 (74) are not on the same vertical plane as the moving plate (63), so that the motor (71), gear 1 (72), connecting rod (73) and gear 2 (74) will not hinder the moving plate (63) from moving up and down.

6. The equipment for extracting crude iodine from brine evaporation mother liquor according to claim 5, characterized in that: A controller is fixed to the outside of the barrel box (11), and the controller is electrically connected to the motor (71).

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