A stirring structure for an extraction tank

Abstract

The utility model discloses a kind of stirring structures for extraction box, including stirring paddle assembly and driving motor, stirring paddle assembly is vertically arranged in extraction box, driving motor is arranged in the upside of extraction box, the upper end of stirring paddle assembly is connected with driving motor by connecting rod and stirring paddle assembly is driven to rotate by driving motor, the stirring paddle assembly includes sequentially connecting stirring paddle unit from top to bottom, stirring paddle unit includes shaft body and paddle, adjacent shaft body is detachably fixed connection by inserting structure, paddle is arranged on the side surface of shaft body.The utility model is detachably connected by several stirring paddle unit to form stirring paddle assembly, the length of stirring paddle assembly is adjusted by adjusting the number of stirring paddle unit, so as to meet the use requirement of extraction box of different height.

Description

Technical Field

[0001] This utility model relates to the field of extraction equipment, specifically to a stirring structure for an extraction tank. Background Technology

[0002] Solvent extraction, as a highly efficient and energy-saving separation method, has been widely used in hydrometallurgy, fine chemicals, nuclear fuel cycle, and wastewater treatment. Its core equipment—the extraction tank (also known as an extraction vessel or mixing and clarification tank)—usually consists of a mixing chamber and a clarification chamber. The stirring device within the mixing chamber is the key component for achieving sufficient contact and mass transfer between the two phases. In existing technologies, this stirring device often adopts a "single-shaft-fixed blade" structure, where a rotating shaft extends from top to bottom into the mixing chamber, and one or more sets of blades are fixedly installed at a predetermined height. The axial length of the blades (i.e., the vertical distribution range of the blades), the number of layers, and the number of blades per layer are all set at the factory and cannot be changed later.

[0003] As extraction processes become increasingly sophisticated, the geometric dimensions of extraction chambers vary due to differences in process parameters such as throughput, phase ratio, and residence time. However, existing fixed-structure agitators have a fixed vertical length. When used in extraction chambers of different heights, the agitator length cannot be adjusted accordingly. If the length is too long, it cannot be installed inside the extraction chamber; if it is too short, the distance between the agitator blades and the bottom of the extraction chamber is too great, failing to agitate the fluid at the bottom and creating a dead zone. Therefore, its applicability is limited and cannot meet the flexible application requirements in industrial production. Utility Model Content

[0004] The purpose of this invention is to provide a stirring structure for an extraction box. This stirring structure consists of a stirring paddle assembly composed of several detachably connected stirring paddle units. The vertical length of the stirring paddle assembly can be adjusted by adjusting the number of stirring paddle units, thereby meeting the usage requirements of extraction boxes of different heights.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] A stirring structure for an extraction chamber includes a stirring paddle assembly and a drive motor. The stirring paddle assembly is vertically arranged inside the extraction chamber, and the drive motor is located on the upper side of the extraction chamber. The upper end of the stirring paddle assembly is connected to the drive motor via a connecting rod, and the stirring paddle assembly is driven to rotate by the drive motor. The stirring paddle assembly includes stirring paddle units connected sequentially from top to bottom. Each stirring paddle unit includes a shaft and blades. Adjacent shafts are detachably fixedly connected by a plug-in structure, and the blades are arranged on the side of the shaft.

[0007] In the above technical solution, preferably, the insertion structure between adjacent shafts includes a groove, a slider, and a first elastic ring. The shaft includes a plug and a sleeve. The plug is located at the upper end of the sleeve and is adapted to slide into the upper adjacent sleeve. Two grooves are provided and are centrally symmetrically arranged on the inner wall of the sleeve. Two sliders are provided and are located at the upper end of the plug. The two sliders are adapted to slide in the two grooves respectively. The groove is L-shaped and includes a vertical section and a horizontal section. The lower end of the vertical section is open at the lower end of the sleeve. The upper end of the vertical section is connected to the left end of the horizontal section. The right end of the horizontal section is provided with a downwardly recessed snap-fit ​​groove. The first elastic ring is sleeved on the plug.

[0008] In the above technical solution, preferably, the inner end of the blade is fixed with an external spline, and the side of the sleeve is provided with an internal spline for the external spline to be inserted. The inner end of the external spline and the sleeve are provided with a connection structure for mutual insertion and fixation.

[0009] In the above technical solution, preferably, the connection structure between the external spline and the insert includes a limiting block and a through hole. The limiting block has a T-shaped cross-section, and its smaller outer end is fixed to the inner end of the external spline. The through hole is opened on the insert, and the vertical width of the through hole gradually decreases in the horizontal direction. The end with the largest width and the end with the smallest width are the wide end and the narrow end, respectively. The wide end can just allow the inner end with the larger diameter of the limiting block to be inserted. The width of the narrow section is smaller than the diameter of the inner end of the limiting block, and the wide end is aligned with the internal spline when the slider is located at the left end of the horizontal section.

[0010] In the above technical solution, preferably, the outer end of the internal spline is provided with an outwardly protruding ring, and a second elastic ring is sleeved on the inner side of the protruding ring.

[0011] In the above technical solution, preferably, the bottom end of the stirring paddle assembly is provided with a sealing element, and the sealing element is a plug-in structure with a sealed bottom end.

[0012] In the above technical solution, preferably, both the first elastic ring and the second elastic ring are made of fluororubber.

[0013] Compared with the prior art, this utility model has the following advantages and effects:

[0014] This invention comprises a stirring paddle assembly consisting of several detachable, pluggable stirring paddle units. Therefore, the vertical length of the stirring paddle assembly can be adjusted by changing the number of stirring paddle units, thereby allowing the lower end of the stirring paddle assembly to be adjusted to a suitable distance from the bottom of the extraction box. This meets the usage requirements of extraction boxes of different heights, has the advantage of wide applicability, and can meet the flexible usage needs in industrial production. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the stirring structure for the extraction box in an embodiment of this utility model.

[0016] Figure 2 yes Figure 1 Exploded view of the agitator assembly.

[0017] Figure 3 yes Figure 2 Enlarged view of the central area.

[0018] Figure 4 yes Figure 1 A cross-sectional view of the two agitator units in the connected state.

[0019] The components include: a stirring paddle assembly 1, a drive motor 2, a connecting rod 3, a stirring paddle unit 4, a shaft 5, a plug 51, a sleeve 52, a slide groove 53, a vertical section 54, a horizontal section 55, a snap-fit ​​groove 56, a slider 57, an internal spline 58, a through hole 59, a wide end 60, a narrow end 61, a blade 7, an external spline 71, a limiting block 72, a convex ring 73, a first elastic ring 8, a second elastic ring 9, a seal 10, and an extraction box 11. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0021] See Figures 1-4 This embodiment provides a stirring structure for an extraction tank, including a stirring paddle assembly 1 and a drive motor 2. The stirring paddle assembly 1 is vertically arranged inside the extraction tank 11, and the drive motor 2 is located on the upper side of the extraction tank 11. The upper end of the stirring paddle assembly 1 is connected to the drive motor 2 via a connecting rod 3, and the stirring paddle assembly 1 is driven to rotate by the drive motor 2. The stirring paddle assembly 1 includes stirring paddle units 4 connected sequentially from top to bottom. The stirring paddle unit 4 includes a shaft 5 and a blade 7. Adjacent shafts 5 are detachably fixedly connected by a plug-in structure, and the blade 7 is arranged on the side of the shaft 5.

[0022] This utility model consists of several detachable plug-in connected stirring paddle units 4 forming a stirring paddle assembly 1. Therefore, the vertical length of the stirring paddle assembly 1 can be adjusted by adjusting the number of stirring paddle units 4, so that the lower end of the stirring paddle assembly 1 and the bottom of the extraction box 11 can be adjusted to a suitable distance, which can meet the usage requirements of extraction boxes 11 of different heights. It has the advantage of wide applicability and can meet the flexible usage requirements in industrial production.

[0023] See Figure 3 , Figure 4The insertion structure between adjacent shafts 5 includes a sliding groove 53, a slider 57, and a first elastic ring 8. The shaft 5 includes a plug 51 and a sleeve 52. The plug 51 is located at the upper end of the sleeve 52 and is adapted to slide into the upper adjacent sleeve 52. Two sliding grooves 53 are provided and are centrally symmetrically arranged on the inner wall of the sleeve 52. Two sliders 57 are provided and are located at the upper end of the plug 51. The two sliders 57 are adapted to slide in the two sliding grooves 53 respectively. The sliding groove 53 is L-shaped and includes a vertical section 54 and a horizontal section 55. The lower end of the vertical section 54 is located at the lower end of the sleeve 52. The upper end of the vertical section 54 is connected to the left end of the horizontal section 55. The right end of the horizontal section 55 is provided with a downwardly recessed snap-fit ​​groove 56. The first elastic ring 8 is sleeved on the plug 51.

[0024] When the two agitator units 4 are inserted and fixed vertically, the angle is adjusted so that the two sliders 57 are inserted into the two vertical sections 54 from the lower opening of the vertical section 54 respectively. The insert 51 is inserted into the sleeve 52 so that the two sliders 57 move to the upper end of the vertical section 54. At this time, the first elastic ring 8 is clamped between the sleeves 52 of the two shafts 5. The two agitator units 4 are squeezed to make the first elastic ring 8 elastically deform and move the sliders 57 to the left end of the horizontal section 55. Then, the two shafts 5 are driven to rotate relative to each other, so that the sliders 57 slide to the right along the horizontal section 55 to the locking groove 56. Under the action of the first elastic ring 8, the sliding groove 53 is locked into the locking groove 56. At this time, the first elastic ring 8 is still in a compressed state. Under the action of the first elastic ring 8, the locking groove 56 and the gravity of the agitator unit 4 itself, the two shafts 5 can be tightly fixed and connected, reducing the probability of separation between adjacent shafts 5 when the agitator assembly 1 rotates at high speed, which may cause failure.

[0025] See Figure 3 , Figure 4 The inner end of the blade 7 is fixed with an external spline 71, and the side of the sleeve 52 is provided with an internal spline 58 for the external spline 71 to be inserted. The inner end of the external spline 71 and the sleeve 51 are provided with a connection structure for mutual insertion and fixation.

[0026] Since the external spline 71 and internal spline 58 can be rotated and reconnected after a certain angle, the pitch angle of the blade 7 can be adjusted by rotating the external spline 71 and the blade 7 according to the viscosity of the fluid material to be stirred in the extraction tank 11, and then it can be re-inserted into the internal spline 58. When the viscosity of the fluid to be stirred is lower, the pitch angle of the blade 7 is closer to a right angle, and the blade 7 can be set in a vertical position to improve the stirring efficiency of the fluid. Conversely, when the viscosity of the fluid is higher, the pitch angle of the blade 7 is closer to a horizontal angle, which can reduce the probability that the blade 7 cannot rotate due to excessive fluid resistance, ensure the normal operation of this utility model, and meet the stirring work of fluid materials with different viscosities.

[0027] See Figure 3 , Figure 4 The connection structure between the external spline 71 and the insert 51 includes a limiting block 72 and a through hole 59. The limiting block 72 has a T-shaped cross-section and its smaller outer end is fixed to the inner end of the external spline 71. The through hole 59 is opened on the insert 51 and the vertical width of the through hole 59 gradually decreases in the horizontal direction. The widest end and the narrowest end are respectively the wide end 60 and the narrow end 61. The wide end 60 can just allow the inner end of the limiting block 72 with a larger diameter to be inserted. The width of the narrow section is smaller than the diameter of the inner end of the limiting block 72. When the slider 57 is located at the left end of the horizontal section 55, the wide end 60 is aligned with the internal spline 58.

[0028] While installing the two shafts 5 vertically, the blades 7 are also installed. Specifically, when the slider 57 moves to the left end of the horizontal section 55, the external spline 71 with the adjusted angle is inserted into the internal spline 58, so that the inner end of the limiting block 72 is inserted into the inside of the through hole 59. Then, the two shafts 5 are driven to rotate relative to each other, causing the slider 57 to slide to the right along the horizontal section 55 to the snap-fit ​​groove 56. At the same time, the through hole 59 moves relative to the limiting block 72, and the contact position between the through hole 59 and the limiting block 72 moves from the wide end 60 to the narrow end 61. Since the vertical width of the through hole 59 is smaller than the diameter of the inner end of the limiting block 72 except for the wide end 60, the limiting block 72 cannot move outward under the action of the through hole 59, thus completing the installation of the blades 7. This can satisfy the pitch angle adjustment of the blades 7 by the copper drum spline while reducing the complexity of the installation structure of the blades 7.

[0029] See Figure 3 , Figure 4 The outer end of the internal spline 58 is provided with an outwardly protruding ring 73, and a second elastic ring 9 is sleeved on the inner side of the protruding ring 73.

[0030] When the inner end of the limiting block 72 is inserted into the through hole 59, the second elastic ring 9 is clamped on the convex ring 73 and the sleeve 52. The second elastic ring 9 generates elastic deformation and exerts an outward pushing force on the convex ring 73, so that the limiting block 72 can abut against the insert 51 at the through hole 59. This reduces the probability that the blade 7, the outer spline 71 and the limiting component as a whole will frequently move back and forth when there is a gap between the limiting block 72 and the insert 51, causing the outer spline 71 and the inner spline 58 to wear against each other, thus extending the service life of this utility model.

[0031] See Figure 1 , Figure 2 The bottom end of the stirring paddle assembly 1 is provided with a sealing element 10, which has the structure of a tube 51 with a sealed bottom end.

[0032] By sealing the bottom opening of the shaft 5 located at the lowest end with the sealing element 10, corrosive fluids can be prevented from entering the shaft 5. At the same time, the lower end of the connecting rod 3 is provided with a sliding groove 53 for insertion and connection with the insert 51 of the shaft 5 located at the uppermost end, reducing the assembly difficulty of this utility model.

[0033] Both the first elastic ring 8 and the second elastic ring 9 are made of fluororubber.

[0034] Fluororubber rings have a certain degree of elasticity to accommodate the installation of the two shafts 5 and the blades 7, while also providing good sealing performance. This reduces the probability of corrosive fluid materials entering the shafts 5 from the connection between the two shafts 5 and the connection between the external spline 71 and the internal spline 58, causing corrosion and loosening of the connection between adjacent shafts 5 and the blades 7. At the same time, fluororubber rings have good corrosion resistance, making them suitable for stirring corrosive fluid materials and extending their service life.

[0035] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A stirring structure for an extraction chamber, characterized in that: The device includes a stirring paddle assembly and a drive motor. The stirring paddle assembly is vertically arranged inside the extraction chamber, and the drive motor is located on the upper side of the extraction chamber. The upper end of the stirring paddle assembly is connected to the drive motor via a connecting rod, and the stirring paddle assembly is driven to rotate by the drive motor. The stirring paddle assembly is characterized in that: the stirring paddle assembly includes stirring paddle units connected sequentially from top to bottom, and the stirring paddle unit includes a shaft and a blade. Adjacent shafts are detachably fixedly connected by a plug-in structure, and the blade is arranged on the side of the shaft.

2. The stirring structure for the extraction chamber according to claim 1, characterized in that: The insertion structure between adjacent shafts includes a groove, a slider, and a first elastic ring. The shaft includes a plug and a sleeve. The plug is located at the upper end of the sleeve and is adapted to slide into the upper adjacent sleeve. Two grooves are provided and are centrally symmetrically arranged on the inner wall of the sleeve. Two sliders are provided and are located at the upper end of the plug. The two sliders are adapted to slide in the two grooves respectively. The groove is L-shaped and includes a vertical section and a horizontal section. The lower end of the vertical section is located at the lower end of the sleeve. The upper end of the vertical section is connected to the left end of the horizontal section. The right end of the horizontal section is provided with a downwardly recessed locking groove. The first elastic ring is sleeved on the plug.

3. The stirring structure for the extraction chamber according to claim 1, characterized in that: The inner end of the blade is fixed with an external spline, and the side of the sleeve is provided with an internal spline for the external spline to be inserted. The inner end of the external spline and the sleeve are provided with a connection structure for mutual insertion and fixation.

4. The stirring structure for the extraction tank according to claim 3, characterized in that: The connection structure between the external spline and the insert includes a limiting block and a through hole. The limiting block has a T-shaped cross-section, and its smaller outer end is fixed to the inner end of the external spline. The through hole is opened on the insert, and the width of the through hole gradually decreases in the horizontal direction. The widest end and the narrowest end are respectively the wide end and the narrow end. The wide end can just accommodate the larger inner end of the limiting block. The width of the narrow section is smaller than the diameter of the inner end of the limiting block. When the slider is located at the left end of the horizontal section, the wide end is aligned with the internal spline.

5. The stirring structure for the extraction tank according to claim 3, characterized in that: The outer end of the internal spline is provided with an outwardly protruding ring, and a second elastic ring is sleeved on the inner side of the protruding ring.

6. The stirring structure for the extraction chamber according to claim 1, characterized in that: The bottom end of the stirring paddle assembly is provided with a sealing element, which is a tube structure with a sealed bottom end.

7. The stirring structure for the extraction chamber according to claim 2, characterized in that: Both the first and second elastic rings are made of fluororubber.

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