A pretreatment device applied to the enrichment of transuranic nuclides in seawater

Abstract

The present invention provides a pretreatment device applied to the enrichment of transuranic nuclides in seawater, belonging to the technical field of seawater treatment. The pretreatment device applied to the enrichment of transuranic nuclides in seawater includes a stirring container, a rotating mechanism, a bearing mechanism and a stirring mechanism. The stirring container is provided with a double-inner-wall structure, and the bottom end of the inner wall close to the outside is higher than the liquid level of the most seawater that the stirring container can accommodate inside. The cavity formed by the inner wall close to the inside of the stirring container forms a stirring area, and the stirring area is of a columnar structure. The top end of the inner wall located inside extends upward into the cavity surrounded by the outer wall, so that a confluence area is formed between the two groups of inner walls. A plurality of groups of return holes are opened at the position of the inner wall corresponding to the confluence area, and the return holes are used to provide a channel for the water flow in the confluence area to flow into the stirring area. The bearing mechanism includes a lifting assembly and a bearing plate. The present invention has the advantages of being able to automatically carry out stirring, precipitation and filtration.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater treatment, and particularly relates to a pretreatment device applied to the enrichment of transuranic nuclides in seawater. Background Art

[0002] When monitoring the radiation environment in seawater, due to the extremely low content of radioactive nuclides in seawater, a large amount of seawater samples are required for detection. Workers must repeat steps such as stirring, sedimentation, and filtration in small volumes and multiple batches. In the prior art, the stirring, sedimentation, and filtration of seawater are usually carried out separately, which is a large workload and cumbersome operation for workers. Summary of the Invention

[0003] To solve the above technical problems, the present invention proposes a pretreatment device applied to the enrichment of transuranic nuclides in seawater, which can automatically perform stirring, sedimentation, and filtration.

[0004] The technical solution of the present invention is realized as follows:

[0005] A pretreatment device applied to the enrichment of transuranic nuclides in seawater, comprising

[0006] A stirring container and a rotating mechanism. The stirring container is provided with a double-inner-wall structure, and the bottom end of the inner wall close to the outside is higher than the liquid level of the most seawater that the stirring container can accommodate inside. The cavity formed by the inner wall close to the inside of the stirring container forms a stirring area, and the stirring area is a cylindrical structure. The top end of the inner wall located inside extends upward into the cavity surrounded by the outer wall, so that a confluence area is formed between the two groups of inner walls. A plurality of groups of return holes are opened at the position of the inner wall corresponding to the confluence area, and the return holes are used to provide a channel for the water flow in the confluence area to flow into the stirring area;

[0007] A carrying mechanism, which includes a lifting component and a carrying plate. The carrying plate is installed at the bottom end inside the stirring container through the lifting component and can move up and down, and the carrying plate is connected to the rotating rod of the rotating mechanism through a linkage component;

[0008] A stirring mechanism, which includes a sleeve and a stirring blade assembly. The sleeve is installed through the clamping component and can move up and down through the rotating rod of the rotating mechanism, and the top of the sleeve is connected to the top of the stirring container through an elastic limiting component. The stirring blade assembly is installed on the rotating sleeve and can move up and down, and the blades of the stirring blade assembly can be assembled into a round cake shape matching the diameter of the carrying plate. Among them,

[0009] When the sediment is lifted to the same height range as the confluence area, the overall length of the elastic limit member is the same as that in the initial state and is in a compressed state. The stirring blade assembly reaches the highest point of the sleeve, and the sleeve remains in driving connection with the rotating rod. When the sediment is continuously lifted upward to the highest point, the elastic limit member is compressed, and the sleeve is separated from the rotating rod.

[0010] Further, the stirring container includes a collecting housing, a stirring barrel, and a fixing frame. The transverse cross-section of the collecting housing is in an "L" shape. One end of the collecting housing away from its vertical plate is fixedly connected to the outer surface of the stirring barrel, and the collecting housing is installed around the stirring barrel end to end. The top of the vertical plate of the collecting housing is higher than the top of the stirring barrel, and the bottom end of the vertical plate is higher than the liquid level of the maximum amount of seawater that the stirring barrel can hold. A confluence area is formed between the top part of the stirring barrel wrapped by the collecting housing and the inner wall of the collecting housing, and a plurality of groups of return holes are provided through the inner wall of the stirring barrel located in the confluence area. The fixing frame is installed on the top of the collecting housing.

[0011] Further, the rotating mechanism includes a stirring motor and a rotating rod. The stirring motor is inverted and installed on the top of the fixing frame through a fixing component. The top end of the rotating rod passes through the fixing frame and is installed on the rotating shaft of the stirring motor, and the bottom end of the rotating rod is installed on the inner bottom wall of the stirring barrel through a bearing.

[0012] Further, a plurality of groups of sliding channels are provided through the surface of the sleeve in a circular array centered on the center of the sleeve. The top ends of the sliding channels are at the same height, and the bottom ends of each group of sliding channels are at different heights. A plurality of groups of gear channels are provided through the surface of the sleeve in a circular array centered on the center of the sleeve.

[0013] Further, the clamping assembly includes a clamping channel, a clamping groove body, a pressing plate, a support plate, a clamping block, and a return spring. The clamping channel is provided through the sleeve. The clamping groove body is provided on the surface of the rotating rod corresponding to the clamping channel. The pressing plate is arranged in the shape of a hollow circular truncated cone shell, and the pressing block is inverted and installed at the bottom of the fixing frame. The support plate includes a horizontal support plate and a vertical baffle, and the support plate is arranged in an "L" shape structure. One end of the horizontal support plate away from the vertical baffle is fixedly installed on the outer surface of the sleeve. The clamping block is horizontally displaceable through a sliding structure on the top of the horizontal support plate of the support plate, and the clamping block can be intermittently inserted into the clamping groove body through the clamping channel. A slope matching the vertical outer surface of the pressing plate is provided at the top end of the clamping block. One end of the return spring abuts against the vertical baffle, and the other end abuts against the surface of the clamping block outside the sleeve, where:

[0014] During the upward movement of the sleeve, before the clamping block abuts against the extrusion plate, the clamping block inserted into the interior of the clamping groove body moves upward synchronously in contact with the vertical inner wall of the clamping groove body. After the clamping plate abuts against the extrusion plate, one end of the clamping block inserted into the clamping groove body begins to be extruded from the interior of the clamping groove body by the extrusion plate.

[0015] Further, the bearing plate is arranged in a circular ring shape matching the inner diameter of the larger arc-shaped inner wall of the mixing barrel, and a plurality of groups of through holes are provided through the top of the bearing plate.

[0016] Further, the lifting assembly includes a lifting structure, a support ring body, a limiting ring body and a rotating track. The moving assembly of the lifting structure is installed inside the mixing barrel. The support ring body is installed on the moving assembly of the lifting structure, and the inner diameter of the support ring body is not less than the inner circle diameter of the bearing plate. The limiting ring body is installed on the top of the support ring body, and the transverse section of the limiting ring body is set in a "T" shape. The rotating track is arranged in a ring shape at the bottom of the bearing plate, and the transverse section of the rotating track matches the shape of the limiting ring body. The top end of the limiting ring body is snap-fitted and movably installed inside the rotating track.

[0017] Further, the linkage assembly includes an internal gear ring, a sliding rod, a transmission gear and an external gear ring. The internal gear ring is installed on the rotating rod through a synchronous rotation assembly and can be displaced up and down. The internal gear ring includes an upper tooth plate and an internal gear ring. The upper tooth plate is fixedly installed on the top of the internal gear ring, and the outer diameter of the upper tooth plate is larger than the outer diameter of the internal gear ring. The sliding rod is fixedly installed on the inner top wall of the gear channel of the sleeve. The transmission gear is rotatably installed on the sliding rod and can be displaced up and down, and the transmission gear meshes with the internal gear ring. The top of the transmission gear abuts against the bottom of the upper tooth plate, and the diameter of the transmission gear is smaller than the diameter of the internal gear ring. The external gear ring is fixedly installed on the inner ring surface of the bearing plate. The external gear ring includes a lower tooth plate and an external gear ring. The lower tooth plate is fixedly installed on the bottom of the external gear ring, and the outer diameter of the lower tooth plate is larger than the outer diameter of the external gear ring. The external gear ring meshes with the transmission gear, and the top of the lower tooth plate abuts against the bottom of the transmission gear.

[0018] Further, the stirring blade assembly includes a sliding connecting piece and stirring blades. The sliding connecting piece penetrates and is slidably arranged on the sliding channel, and the surface of the sliding connecting piece is in fitting connection with the inner wall of the sliding channel. The stirring blades are rotatably installed at one end of the sliding connecting piece away from the sliding channel, and the stirring blades are set to rotate in one direction. A plurality of groups of through holes are provided through the top of the stirring blades.

[0019] Further, a flipping mechanism is installed on the fixing frame. The flipping mechanism includes a guiding rod, an extending channel, a stop block, and a telescopic spring. The guiding rod is fixedly installed at the top of the stirring blade near the rotation direction. The extending channel is disposed through the top of the fixing frame and is circular ring-shaped. The stop block includes a horizontal plate body and a vertical plate body. One end of the horizontal plate body is slidably installed on the fixing frame through a telescopic component, and the other end is suspended above or inside the extending channel. The vertical plate body is fixedly installed at one end of the horizontal plate body near the extending channel, and the bottom end of the vertical plate body extends below the fixing frame.

[0020] The present invention has the following beneficial effects:

[0021] 1. By providing an annular bearing plate that matches the inner wall of the stirring barrel and setting the bearing plate to be displaceable up and down, the present invention achieves the function of lifting the sediment above the sea water level inside the stirring barrel.

[0022] 2. By setting the top ends of the sliding channels to be the same and setting the heights of the bottom ends of the sliding channels to be various, the stirring blades can be dispersed at different heights inside the stirring barrel under the action of their own weights, so as to achieve the stirring effect on the sea water at different heights inside the stirring barrel.

[0023] 3. By setting the stirring blades to rotate in one direction and enabling them to be assembled into a circular cake shape that matches the inner wall of the stirring barrel, after the bearing plate lifts the sediment above the sea water level, the stirring blades can clamp the sediment together with the bearing plate to assist in squeezing out some moisture in the sediment.

[0024] 4. By providing a clamping component at the connection between the sleeve and the rotating rod, the sleeve and the rotating rod can be separated, so as to achieve the effect that the stirring blades do not rotate and the bearing plate drives the sediment to rotate and discharge the material. Description of the Drawings

[0025] Figure 1 is the overall structural schematic diagram of a pretreatment device for the enrichment of transuranic nuclides in seawater according to the present invention;

[0026] Figure 2 is the structural schematic diagram of the bearing mechanism of a pretreatment device for the enrichment of transuranic nuclides in seawater according to the present invention;

[0027] Figure 3 is the enlarged detail view of part A of a pretreatment device for the enrichment of transuranic nuclides in seawater according to the present invention;

[0028] Figure 4 is the enlarged detail view of part B of a pretreatment device for the enrichment of transuranic nuclides in seawater according to the present invention;

[0029] Figure 5It is a structural schematic diagram of a stirring blade assembly of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0030] Figure 6 This is a detailed enlarged view of position D of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0031] Figure 7 It is a carrier plate of a pretreatment device used for enrichment of transuranic nuclides in seawater according to the present invention;

[0032] Figure 8 This is an enlarged view of the details of position E of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0033] Figure 9 This is a detailed enlarged view of position F of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0034] Figure 10 It is a schematic structural diagram of a casing of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0035] Figure 11 It is a schematic structural diagram of a stirring blade of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0036] Figure 12 It is a schematic structural diagram of a rotating track of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0037] Figure 13 It is a structural schematic diagram of a sliding channel of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0038] Figure 14 It is a schematic structural diagram of an extrusion plate of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0039] Figure 15 It is a schematic diagram of a stirring state of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0040] Figure 16 It is a schematic diagram of the water-spinning state of a pretreatment device for enriching transuranic nuclides in seawater according to the present invention;

[0041] Figure 17 The present invention is a schematic diagram of the material discarding state of a pretreatment device for enriching transuranic nuclides in seawater.

[0042] Illustration: 2. Stirring container; 2.1 Collection housing; 2.2 Stirring barrel; 2.3 Fixed frame; 3. Rotating mechanism; 3.1 Stirring motor; 3.2 Rotating rod; 4. Bearing mechanism; 6. Bearing plate; 7. Lifting assembly; 7.1 Lifting structure; 7.2 Support ring body; 7.3 Limiting ring body; 7.4 Rotating track; 8. Linkage assembly; 8.1 Internal gear ring; 8.2 Slide bar; 8.3 Driving gear; 8.4 External gear ring; 9. Stirring mechanism; 10. Sleeve; 10.1 Sliding channel; 10.2 Gear channel; 11. Stirring blade assembly; 11.1 Sliding connecting piece; 11.2 Stirring blade; 12. Clamping assembly; 12.1 Clamping channel; 12.2 Clamping groove body; 12.3 Extrusion plate; 12.4 Support plate; 12.5 Clamping block; 12.6 Return spring; 13. Elastic limiting component; 14. Flipping mechanism; 14.1 Guide rod; 14.2 Extended channel; 14.3 Stopper; 14.4 Telescopic spring. Detailed implementation manners

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 to 17 , the present invention provides a pretreatment device for enriching transuranic nuclides in seawater, including a stirring container 2, a rotating mechanism 3, a stirring mechanism 9, and a bearing mechanism 4.

[0045] The stirring container 2 is provided with a double-inner wall structure, and the bottom end of the inner wall close to the outside is higher than the liquid level of the most seawater that can be accommodated inside the stirring container 2. The cavity formed by the inner wall close to the inside of the stirring container 2 forms a stirring area, and the stirring area is a columnar structure. The top end of the inner wall located inside extends upward into the cavity surrounded by the outer wall, so that a confluence area is formed between the two groups of inner walls. A plurality of groups of return holes are opened at the position on the inner wall corresponding to the confluence area, and the return holes are used to provide a channel for the water flow in the confluence area to flow into the stirring area.

[0046] The stirring container 2 includes a collecting housing 2.1, a stirring barrel 2.2 and a fixing bracket 2.3. The transverse section of the collecting housing 2.1 is in an "L" shape. One end of the collecting housing 2.1 away from its vertical plate is fixedly connected to the outer surface of the stirring barrel 2.2, and the collecting housing 2.1 is installed around the stirring barrel 2.2 end to end. The top of the vertical plate of the collecting housing 2.1 is higher than the top of the stirring barrel 2.2, and the bottom end of the vertical plate is higher than the liquid level of the most seawater that the stirring barrel 2.2 can hold. A confluence area is formed between the top part of the stirring barrel 2.2 wrapped by the collecting housing 2.1 and the inner wall of the collecting housing 2.1, and several groups of return holes are provided through the barrel wall of the stirring barrel 2.2 located in the confluence area. The fixing bracket 2.3 is installed on the top of the collecting housing 2.1.

[0047] During use, when the sediment is lifted to the same height range as the confluence area for squeezing water or centrifugal water throwing, the sediment located between the stirring blade 11.2 and the bearing plate 6 can be blocked by the barrel wall of the stirring barrel 2.2 located in the confluence area, and the water in the sediment can pass through the return holes and enter the return area.

[0048] When the sediment is lifted above the stirring barrel 2.2 and thrown out by centrifugal force, the vertical plate of the collecting housing 2.1 higher than the top of the stirring barrel 2.2 can block the thrown objects, and the thrown sediment is intercepted in the confluence area. Since the top of the confluence area is an open mouth, it is convenient for the staff to collect and clean the sediment in the confluence area.

[0049] In the embodiment of the present invention, two groups of outwardly convex arc-shaped inner walls are symmetrically formed on the inner wall of the stirring barrel 2.2, and the stirring barrel 2.2 is located on the arc-shaped inner wall.

[0050] The rotating mechanism 3 includes a stirring motor 3.1 and a rotating rod 3.2. The stirring motor 3.1 is inversely installed on the top of the fixing bracket 2.3 through a fixing component. The top end of the rotating rod 3.2 passes through the fixing bracket 2.3 and is installed on the rotating shaft of the stirring motor 3.1, and the bottom end of the rotating rod 3.2 is installed on the inner bottom wall of the stirring barrel 2.2 through a bearing.

[0051] In the embodiment provided by the present invention, the fixing component includes a motor bracket. The motor bracket is set in an inverted "U" shape, and the motor bracket is fixedly installed on the top of the fixing bracket 2.3 through a connecting plate body. The stirring motor 3.1 is inversely and fixedly installed on the inner bottom wall of the motor bracket.

[0052] The bearing mechanism 4 includes a lifting component 7 and a bearing plate 6. The bearing plate 6 is installed at the bottom end inside the stirring container 2 through the lifting component 7 so as to be displaceable up and down, and the bearing plate 6 is connected to the rotating rod 3.2 of the rotating mechanism 3 through a linkage component 8.

[0053] The lifting assembly 7 includes a lifting structure 7.1, a support ring body 7.2, a limiting ring body 7.3 and a rotating track 7.4. The moving assembly of the lifting structure 7.1 is installed inside the mixing barrel 2.2. The support ring body 7.2 is installed on the moving assembly of the lifting structure 7.1, and the inner diameter of the support ring body 7.2 is not less than the inner circle diameter of the bearing plate 6, so that during the process of the support ring body 7.2 lifting the bearing plate 6 upward, it will not be blocked by the linkage assembly 8 connected to the inner ring surface of the bearing plate 6. The limiting ring body 7.3 is installed on the top of the support ring body 7.2, and the transverse section of the limiting ring body 7.3 is set in a "T" shape. The rotating track 7.4 is arranged in a ring shape at the bottom of the bearing plate 6, and the transverse section of the rotating track 7.4 matches the shape of the limiting ring body 7.3. The top end of the limiting ring body 7.3 is snap-fitted and movably installed inside the rotating track 7.4. By setting the transverse sections of both the limiting ring body 7.3 and the rotating track 7.4 in a "T" shape, it is ensured that while the bearing plate 6 can rotate on the support ring body 7.2, the situation where the bearing plate 6 detaches from above the support ring body 7.2 is avoided. And the limiting ring body 7.3 is set in a block shape, and by reducing the connection surface between the support ring body 7.2 and the bearing plate 6, the resistance during the rotation of the bearing plate 6 is effectively reduced.

[0054] In the embodiment provided by the present invention, the lifting structure 7.1 includes a lifting motor, a lead screw, a small pulley, a large pulley set, a belt and a lifting block. The lifting motor passes through and is installed upside down on the top of the fixing frame 2.3. The bearing of the lead screw is installed on the inner bottom wall of the mixing container 2. There are two groups of lead screws. The top end of one group of lead screws is fixedly connected to the output end of the motor, and the top end of the other group of lead screws is connected to the bottom of the fixing frame 2.3 through a bearing. The small pulley is fixedly installed at the bottom end of the lead screw, the large pulley set is fixedly installed at the bottom end of the rotating rod 3.2, and the small pulley and the large pulley set are connected by a belt. The lifting block is threadedly installed through the lead screw, and the lifting block is symmetrically and fixedly installed on the support ring body 7.2.

[0055] During use, when the lifting motor operates, the lifting motor drives the lead screw connected to it to rotate. The lead screw drives the other group of lead screws to rotate through the small pulley, the large pulley set and the belt. The lifting blocks fixedly connected to the support ring body 7.2 are all threadedly installed through the lead screws, so that the lifting blocks are pushed by the threads on the surface of the lead screws to move up and down along the lead screws, thereby realizing the function of the up and down displacement of the bearing plate 6, and further achieving the effect of the bearing plate 6 lifting the sediment upward to separate it from the supernatant.

[0056] When the sediment is lifted by the bearing plate 6 to the same height range as the confluence area, the overall length of the elastic limiting member 13 is the same as that in the initial state and is in a compressed state. The mixing blade assembly 11 reaches the highest point of the sleeve 10, and the sleeve 10 remains in transmission connection with the rotating rod 3.2; when the sediment is continuously lifted upward to the highest point, the elastic limiting member 13 is compressed to the shortest, and the sleeve 10 is separated from the rotating rod 3.2.

[0057] The bearing plate 6 is arranged in a ring shape matching the inner diameter of the larger arc-shaped inner wall of the mixing barrel 2.2, so that the sediment accumulated at the bottom of the mixing barrel 2.2 can be fully received by the bearing plate 6, and thus the sediment and the supernatant can be separated by lifting the bearing plate 6. A number of groups of through holes are provided through the top of the bearing plate 6, so that when squeezing water or centrifugally throwing water on the sediment, part of the water squeezed out passes through the through holes and falls back into the mixing barrel 2.2, and part of the water thrown out falls back into the mixing barrel 2.2 through falling.

[0058] The linkage assembly 8 includes an internal gear ring 8.1, a sliding rod 8.2, a transmission gear 8.3, and an external gear ring 8.4. The internal gear ring 8.1 is installed on the rotating rod 3.2 through a synchronous rotation assembly and can be displaced up and down. The internal gear ring 8.1 includes an upper tooth plate and an internal gear ring. The upper tooth plate is fixedly installed on the top of the internal gear ring, and the outer diameter of the outer circle of the upper tooth plate is larger than the outer diameter of the outer circle of the internal gear ring. The sliding rod 8.2 is fixedly installed on the inner top wall of the gear channel 10.2 of the sleeve 10. The transmission gear 8.3 is rotatably installed on the sliding rod 8.2 and can be displaced up and down, and the transmission gear 8.3 meshes with the internal gear ring. The top of the transmission gear 8.3 abuts against the bottom of the upper tooth plate, so that when the transmission gear 8.3 is lifted up, the internal gear ring 8.1 is synchronously lifted and moves up along the rotating rod 3.2. And the diameter of the transmission gear 8.3 is smaller than the diameter of the internal gear ring, so that when the internal gear ring 8.1 drives the transmission gear 8.3 to rotate, the rotation speed of the transmission gear 8.3 is greater than the rotation speed of the internal gear ring 8.1. The external gear ring 8.4 is fixedly installed on the inner surface of the bearing plate 6. The external gear ring 8.4 includes a lower tooth plate and an external gear ring. The lower tooth plate is fixedly installed on the bottom of the external gear ring, and the outer diameter of the outer circle of the lower tooth plate is larger than the outer diameter of the outer circle of the external gear ring. The external gear ring meshes with the transmission gear 8.3, and the top of the lower tooth plate abuts against the bottom of the transmission gear 8.3, so that when the lower tooth plate is driven by the bearing plate 6 to move up, the lower tooth plate can simultaneously lift the transmission gear 8.3 along the sliding rod 8.2, thereby realizing the effect that the whole linkage assembly 8 moves up synchronously with the bearing plate 6.

[0059] During use, when the sleeve 10 is drivingly connected to the rotating rod 3.2 through the clamping block 12.5, the rotating rod 3.2 is driven by the stirring motor 3.1 to rotate clockwise. The inner tooth ring 8.1 and the sleeve 10 are driven by the rotating rod 3.2 to rotate synchronously around the center of the rotating rod 3.2. The sleeve 10 drives the transmission gear 8.3 through the sliding rod 8.2 to perform a circular motion around the center of the rotating rod 3.2. The transmission gear 8.3 meshes with the inner tooth ring 8.1 and the outer tooth ring 8.4 respectively, so that the inner tooth ring 8.1 inhibits the rotation of the transmission gear 8.3 meshing with it, making the transmission gear 8.3 and the rotating rod 3.2 relatively stationary, and the inner tooth ring 8.1 and the rotating rod 3.2 relatively stationary. At this time, the transmission gear 8.3 is in a moving state relative to the outer tooth ring 8.4, prompting the transmission gear 8.3 to drive the outer tooth ring 8.4 meshing with it to continue to rotate self, and the outer tooth ring 8.4 drives the bearing plate 6 to rotate self, thereby realizing the self-rotation effect of the bearing plate 6 inside the stirring barrel 2.2 and driving the seawater at the bottom of the stirring barrel 2.2 to flow.

[0060] When the sleeve 10 is separated from the rotating rod 3.2, the rotating rod 3.2 is driven by the stirring motor 3.1 to rotate in the reverse direction, and the inner tooth ring 8.1 is driven by the rotating rod 3.2 to rotate synchronously with it. At this time, the sleeve 10 is in a stationary state, prompting the position of the transmission gear 8.3 to remain unchanged, that is, when the inner tooth ring 8.1 rotates, the inner tooth ring 8.1 and the transmission gear 8.3 move relative to each other, so that the inner tooth ring 8.1 drives the transmission gear 8.3 to rotate. At this time, the rotational speed of the transmission gear 8.3 is greater than the rotational speed of the rotating rod 3.2 itself, and the accelerated transmission gear 8.3 drives the outer tooth ring 8.4 to rotate self, so that the outer tooth ring 8.4 drives the sediment on the top of the bearing plate 6 to rotate at a high speed.

[0061] In the embodiment provided by the present invention, the synchronous rotation assembly includes a limiting rod and a clamping groove. The limiting rods are symmetrically installed on the inner wall of the inner tooth ring 8.1, and the clamping grooves are symmetrically arranged on the surface of the rotating rod 3.2. The rotation of the rotating rod 3.2 drives the limiting rods to rotate synchronously through the clamping grooves, and the limiting rods drive the inner tooth ring 8.1 and the rotating rod 3.2 to rotate synchronously.

[0062] During use, when the bearing plate 6 lifts the sediment to the highest position, the bearing plate 6 drives the linkage assembly 8 to move upward as a whole, and the inner tooth ring 8.1 drives the limiting rod to slide upward along the inner wall of the clamping groove.

[0063] The stirring mechanism 9 includes a sleeve 10 and a stirring blade assembly 11. The sleeve 10 is installed through the rotating rod 3.2 of the rotating mechanism 3 in a vertically displaceable manner through the clamping assembly 12, and the top of the sleeve 10 is connected to the top of the stirring container 2 through the elastic limiting member 13. The stirring blade assembly 11 is installed on the sleeve 10 in a vertically displaceable manner, and the blades of the stirring blade assembly 11 can be assembled into a circular cake shape matching the inner diameter of the larger arc-shaped inner wall at the bottom of the stirring container 2.

[0064] The surface of the sleeve 10 is provided with several groups of sliding channels 10.1 in a circular array centered on the center of the sleeve 10. The top heights of the sliding channels 10.1 are the same, and the bottom heights of each group of sliding channels 10.1 are different. The stirring blade assembly 11 penetrates and is slidably installed on the sliding channels 10.1, and one end of the stirring blade assembly 11 located inside the sleeve 10 is in fitting connection with the surface of the rotating rod 3.2. The surface of the sleeve 10 is provided with several groups of gear channels 10.2 in a circular array centered on the center of the sleeve 10. The top of the sliding rod 8.2 is installed on the inner top wall of the gear channel 10.2. The transmission gear 8.3 moves up and down inside the gear channel 10.2 by sliding along the sliding rod 8.2, and the gear channel 10.2 provides a displacement space for the up and down displacement of the transmission gear 8.3.

[0065] The bottom of the fixing frame 2.3 is fixedly and inversely installed with an extrusion plate 12.3, and the extrusion plate 12.3 is arranged as a hollow circular frustum shell structure. The arc surface of the sleeve 10 is symmetrically and penetratively provided with clamping channels 12.1. A clamping block 12.5 is installed through the inside of the clamping channel 12.1, and the top of the clamping block 12.5 is provided with an inclined surface matching the inclined surface of the extrusion plate 12.3. By arranging the extrusion plate 12.3 as a hollow circular frustum structure, it is ensured that the extrusion plate 12.3 can extrude the clamping blocks 12.5 at different angles or displacements below. The surface of the sleeve 10 is fixedly connected with an L-shaped support plate 12.4, and the bottom of the clamping block 12.5 is installed on the top of the transverse plate body of the support plate 12.4 through a sliding structure. The clamping channel 12.1 and the support plate 12.4 together receive and support the clamping block 12.5. The surface of the rotating rod 3.2 facing the clamping channel 12.1 is provided with a clamping groove 12.2, and one end of the clamping block 12.5 located inside the sleeve 10 is movably and vertically displaceably inserted into the clamping groove 12.2. The vertical surface of the support plate 12.4 close to the clamping block 12.5 is connected with a return spring 12.6, and one end of the return spring 12.6 away from the support plate 12.4 is connected with one end of the clamping block 12.5 away from the clamping groove 12.2.

[0066] In the embodiment provided by the present invention, the sliding structure includes a T-shaped block and a T-shaped sliding groove. The T-shaped block is inversely and fixedly installed at the bottom of the clamping block 12.5, the T-shaped sliding groove is arranged at the top of the support plate 12.4, and the shape of the T-shaped sliding groove matches that of the T-shaped block. The clamping block 12.5 and the support plate 12.4 are slidably matched through the T-shaped block and the T-shaped sliding groove to achieve the effect of horizontal displacement of the clamping block 12.5 on the top of the support plate 12.4 and the function of limiting the clamping block 12.5.

[0067] In the embodiment provided by the present invention, the elastic limiting member 13 includes an adjusting spring and a lifting plate. The top end of the adjusting spring abuts against the bottom of the fixing frame 2.3, the lifting plate is abutted and installed at the bottom end of the adjusting spring, and the bottom of the lifting plate abuts against the top of the sleeve. By installing the spring in a compressed state between the lifting plate and the fixing frame 2.3, and using the downward thrust of the spring on the lifting plate, a resistance is formed to the upward movement of the sleeve. In this way, when the top of the stirring blade assembly 11 abuts against the inner top wall of the sliding channel 10.1, the stirring blade assembly 11 stops moving upward, while the bearing plate 6 continues to move upward driven by the lifting assembly 7, so that the distance between the stirring blade 11.2 and the bearing plate 6 is shortened, realizing the extrusion effect on the sediment between the two. And because the sediment and the confluence area are in the same height range at this time, the extruded sediment still remains between the stirring blade 11.2 and the bearing plate 6, thus realizing the water squeezing effect on the sediment in the middle of the two. And the adjusting spring provides sufficient upward movement space for the clamp block 12.5 on the sleeve 10 to move upward and abut against the extrusion plate 12.3.

[0068] During use, when the bearing plate 6 lifts the sediment and moves out of the liquid level inside the stirring barrel 2.2, the bearing plate 6 drives the stirring blade 11.2 at the top to move upward synchronously through the sediment. Until the top of the stirring blade 11.2 assembly abuts against the inner top wall of the sliding channel 10.1, the stirring blade 11.2 assembly cannot continue to move upward on the sleeve 10, and the top of the sleeve 10 abuts against the bottom end of the spring in a compressed state at this time. The compressed spring exerts a downward force on the sleeve 10, so that before there is still an extrusion space between the bearing plate 6 and the stirring blade 11.2, that is, before the sediment between the two can still be compressed, the bearing plate 6 moves upward relative to the stirring blade 11.2 abutting against the inner top wall of the sliding channel 10.1, so that the space between the bearing plate 6 and the stirring blade 11.2 is reduced, and the sediment between the two is further extruded to initially squeeze the water from the sediment.

[0069] When the sediment is fully extruded, the bearing plate 6 stops moving upward, the stirring motor 3.1 runs again and drives the rotating rod 3.2 to rotate. The rotating rod 3.2 drives the bearing plate 6 and the sleeve 10 to rotate again, so that the bearing plate 6 and the stirring blade 11.2 clamp the sediment together and rotate, so as to realize the centrifugal water throwing effect on the sediment, thereby improving the effect of removing water from the sediment.

[0070] During this process, since the sediment is within the height range of the confluence area at this time, the unclamped surface of the sediment is blocked by the top inner wall of the stirring barrel 2.2 to prevent the sediment from being thrown out during rotation. During this process, multiple groups of return holes on the stirring barrel 2.2 provide channels for the water body in the sediment to flow into the confluence area, and also provide channels for the water body in the confluence area to flow back into the inside of the stirring barrel 2.2.

[0071] After the sediment is dewatered by centrifugation, the stirring motor 3.1 stops running, and the bearing plate 6 moves upward again. The bearing plate 6 continuously moves upward and generates an upward force on the sleeve 10 through the stirring blade 11.2 assembly, prompting the sleeve 10 to move upward synchronously with the bearing plate 6 in this state. The adjusting spring is compressed, and the stirring blade 11.2 assembly moves upward synchronously. During its upward movement, the top inclined surface of the clamping block 12.5 begins to abut against the inclined surface of the pressing plate 12.3. As the clamping block 12.5 gradually moves upward following the sleeve 10, under the guiding action of the inclined surface of the pressing plate 12.3, the clamping block 12.5 moves outward and gradually disengages from the clamping groove body 12.2, so that the sleeve 10 is separated from the rotating rod 3.2.

[0072] When one end of the clamping block 12.5 completely moves out of the inside of the clamping groove body 12.2, the stirring motor 3.1 runs again to drive the rotating rod 3.2 to rotate in the reverse direction. Since the sleeve 10 and the rotating rod 3.2 are already in a separated state, when the rotating rod 3.2 rotates, the sleeve 10 remains stationary, while the rotating rod 3.2 drives the bearing plate 6 to rotate at a high speed through the linkage assembly 8. During the rotation of the sediment on the top of the bearing plate 6, there is no obstacle on the side of the sediment, so that the sediment is thrown outwards under the action of centrifugal force during the high-speed rotation, thus achieving the effect of throwing out the sediment by high-speed rotation.

[0073] During this process, the bearing plate 6 continuously moves upward until the top of the clamping block 12.5 abuts against the bottom of the fixed frame 2.3 and then stops moving upward.

[0074] The stirring blade assembly 11 includes a sliding connecting piece 11.1 and a stirring blade 11.2. The sliding connecting piece 11.1 penetrates and is slidably arranged on the sliding channel 10.1, and the surface of the sliding connecting piece 11.1 is in fit connection with the inner wall of the sliding channel 10.1. The stirring blade 11.2 is rotatably installed at one end of the sliding connecting piece 11.1 away from the sliding channel 10.1, and the stirring blade 11.2 is set to rotate in one direction. A plurality of groups of through holes are provided through the top of the stirring blade 11.2.

[0075] In the embodiment provided by the present invention, the sliding connecting piece 11.1 includes a connecting arc plate, a limiting slider, a connecting block and a rotating groove body. The rotating groove body is arranged at one end of the stirring blade 11.2 close to the sleeve 10. The connecting block is integrally in a "T" shape, and the connecting block is rotatably installed inside the rotating groove body. The shape of the slot hole provided in the rotating groove body enables the connecting block to only rotate in one direction inside the rotating groove body. The limiting slider is fixedly connected to one end of the connecting block away from the rotating groove body, and the two opposite vertical surfaces of the limiting slider are respectively in contact with the side walls of the sliding channel 10.1. The connecting arc plate is fixedly connected to one end of the limiting slider away from the connecting block. The surface of the connecting arc plate away from the limiting slider is in contact with the surface of the rotating rod 3.2, and the surface of the connecting arc plate connected to the rotating rod 3.2 forms an arc surface matching the surface of the rotating rod 3.2.

[0076] The flipping mechanism 14 includes a guide rod 14.1, an extension channel 14.2, a stop block 14.3, and a telescopic spring 14.4. The guide rod 14.1 is fixedly and vertically installed at the top of the stirring blade near the rotation direction. When the stirring blade assembly 11 rotates with the sleeve to stir the seawater in the stirring barrel 2.2, multiple groups of guide rods 14.1 are respectively lapped on adjacent stirring blades 11.2, thereby restricting the angle of the stirring blades 11.2 in the stirring state, so as to facilitate the sediment to lift the stirring blades 11.2 to adjust to a horizontal angle. And when the guide rod 14.1 follows the rotation of the stirring blade 11.2, it can assist the stirring blade 11.2 to stir the seawater, improving the stirring efficiency. The extension channel 14.2 is disposed through the top of the fixed frame 2.3, and the extension channel 14.2 is arranged in a circular ring shape. The stop block 14.3 includes a horizontal plate body and a vertical plate body. One end of the horizontal plate body is slidably installed on the fixed frame 2.3 through a telescopic component, and the other end is suspended above or inside the extension channel 14.2. The vertical plate body is fixedly installed at one end of the horizontal plate body near the extension channel 14.2, and the bottom end of the vertical plate body extends below the fixed frame 2.3. The telescopic spring 14.4 is installed inside the stop block 14.3. One end of the telescopic spring 14.4 abuts against the inner wall of the extension channel 14.2, and the other end abuts against the inner wall of the vertical plate body near the horizontal plate body. The stop block 14.3 realizes the opening and closing function of the extension channel 14.2 through lateral displacement. The stop block 14.3 laterally displaces by squeezing the telescopic spring 14.4 to open the extension channel 14.2, and the telescopic spring 14.4 pushes the stop block 14.3 to laterally displace by rebounding to close the extension channel 14.2.

[0077] During use, during the process of stirring the seawater inside the stirring barrel 2.2, since the bottom of the stirring blade 11.2 is supported by the sediment, at this time the stirring blade 11.2 is in a horizontal state, making the guide rod 14.1 vertically abut against the bottom of the fixed frame 2.3.

[0078] During the process of lifting the sediment above the confluence area, as the guide rod 14.1 moves upward with the stirring blade 11.2, when the top end of the guide rod 14.1 abuts against the bottom of the fixed frame 2.3, the guide rod 14.1 exerts a downward acting force on the stirring blade 11.2. Since the stirring blade 11.2 and the connecting block are arranged for one-way rotation, the stirring blade 11.2 is pushed downward by the thrust of the guide rod 14.1 and squeezes the sediment below.

[0079] ​During this process, the guide rod 14.1 flips synchronously with the stirring blade 11.2. The top of the guide rod 14.1 remains in contact with the bottom of the fixed frame 2.3 and gradually slides on the bottom of the fixed frame 2.3. When the top of the guide rod 14.1 contacts the bottom surface of the fixed frame 2.3 where the stopper 14.3 protrudes, the top of the guide rod 14.1 continuously rotates and presses the stopper 14.3. The stopper 14.3 displaces laterally and presses the telescopic spring 14.4 to open the extension channel 14.2, providing a path for the guide rod 14.1 to enter the extension channel 14.2.

[0080] When the sediment is centrifugally thrown out, the sediment rotates highly. During this process, the stopper 14.3 that is not pressed by the guide rod 14.1 limits the displacement space of the two side guide rods 14.1 to block the displacement of the guide rod 14.1 inside the extension channel 14.2, thereby limiting the displacement of the stirring blade 11.2 inside the extension channel 14.2 and preventing the stirring blade 11.2 from rotating with the sediment.

[0081] Due to the thrust of the guide rod 14.1, the stirring blade 11.2 is in an inclined state. Affected by the position of the stirring blade 11.2, the inclined stirring blade 11.2 has a certain resistance to the rotating sediment, and the inclined surface of the stirring blade 11.2 plays a certain guiding role in the rotating sediment, enabling the stirring blade 11.2 to assist in pushing the sediment on the top of the bearing plate 6 outward from the top of the bearing plate 6.

[0082] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pretreatment device applied to the enrichment of transuranic nuclides in seawater, characterized in that, including a stirring container and a rotating mechanism, the stirring container is provided with a double inner wall structure, and the bottom end of the inner wall close to the outside is higher than the liquid level of the most sea water that can be accommodated inside the stirring container. The cavity formed by the inner wall close to the inside of the stirring container forms a stirring area, and the stirring area is of a cylindrical structure. The top end of the inner wall located inside extends upward into the cavity surrounded by the outer wall, so that a confluence area is formed between the two groups of inner walls. A number of groups of return holes are provided at the position on the inner wall corresponding to the confluence area, and the return holes are used to provide a channel for the water flow in the confluence area to flow into the stirring area; a carrying mechanism, which includes a lifting component and a carrying plate. The carrying plate is installed at the bottom end inside the stirring container through the lifting component and can be displaced up and down, and the carrying plate is connected to the rotating rod of the rotating mechanism through a linkage component; a stirring mechanism, which includes a sleeve and a stirring blade assembly. The sleeve is installed through the clamping component and can be displaced up and down through the rotating rod of the rotating mechanism, and the top of the sleeve is connected to the top of the stirring container through an elastic limiting component. The stirring blade assembly is installed on the rotating sleeve and can be displaced up and down, and the blades of the stirring blade assembly can be assembled into a round cake shape matching the diameter of the carrying plate. Among them, when the sediment is lifted to the same height range as the confluence area, the overall length of the elastic limiting component is the same as the length in the initial state and is in a compressed state. The stirring blade assembly reaches the highest position of the sleeve, and the sleeve remains in transmission connection with the rotating rod; when the sediment is continuously lifted to the highest position, the elastic limiting component is compressed and the sleeve is separated from the rotating rod; the stirring container includes a collecting shell, a stirring barrel and a fixing frame. The cross section of the collecting shell is "L" shaped. One end of the collecting shell far from its vertical plate is fixedly connected to the outer surface of the stirring barrel, and the collecting shell is installed end to end outside the stirring barrel. The top of the vertical plate of the collecting shell is higher than the top of the stirring barrel, and the bottom end of the vertical plate is higher than the liquid level of the most sea water that the stirring barrel can accommodate. A confluence area is formed between the top part of the stirring barrel wrapped by the collecting shell and the inner wall of the collecting shell, and a number of groups of return holes are provided through the inner wall of the stirring barrel located in the confluence area. The fixing frame is installed on the top of the collecting shell.

2. The pretreatment device for enriching transuranic nuclides in seawater according to claim 1, wherein, the rotating mechanism includes a stirring motor and a rotating rod. The stirring motor is installed upside down on the top of the fixing frame through a fixing component. The top end of the rotating rod passes through the fixing frame and is installed on the rotating shaft of the stirring motor, and the bottom end of the rotating rod is installed on the inner bottom wall of the stirring barrel through a bearing.

3. The pretreatment device applied to the enrichment of transuranic nuclides in seawater according to claim 2, wherein, a number of groups of sliding channels are provided through the surface of the sleeve in a circular array with the center of the sleeve as the center. The top heights of the sliding channels are the same, and the bottom heights of each group of sliding channels are different. A number of groups of gear channels are provided through the surface of the sleeve in a circular array with the center of the sleeve as the center.

4. The pretreatment device for ultra-trace actinide enrichment in seawater according to claim 3, wherein, The clamping assembly includes a clamping channel, a clamping groove body, a pressing plate, a support plate, a clamping block and a return spring. The clamping channel is disposed through the sleeve. The clamping groove body is arranged on the surface of the rotating rod corresponding to the clamping channel. The pressing plate is configured in the shape of a hollow circular frustum shell, and the pressing block is inversely installed at the bottom of the fixed frame. The support plate includes a horizontal support plate and a vertical baffle, and the support plate is configured in an "L" shaped structure. One end of the horizontal support plate away from the vertical baffle is fixedly installed on the outer surface of the sleeve. The clamping block is horizontally displaceably arranged on the top of the horizontal support plate of the support plate through a sliding structure, and the clamping block can be intermittently inserted into the clamping groove body through the clamping channel. The top end of the clamping block is provided with an inclined surface matching the vertical outer surface of the pressing plate. One end of the return spring abuts against the vertical baffle, and the other end abuts against the surface of the clamping block outside the sleeve, wherein: During the upward movement of the sleeve, before the clamping block abuts against the pressing plate, the clamping block inserted into the clamping groove body moves upward synchronously in contact with the vertical inner wall of the clamping groove body. After the clamping plate abuts against the pressing plate, one end of the clamping block inserted into the clamping groove body begins to be extruded from the clamping groove body by the pressing plate.

5. The pretreatment device for the enrichment of transuranic nuclides in seawater according to claim 4, characterized in that, The bearing plate is configured in a circular ring shape matching the inner diameter of the larger arc-shaped inner wall of the mixing barrel, and a plurality of groups of through holes are provided through the top of the bearing plate.

6. The pretreatment device applied to the enrichment of transuranic nuclides in seawater according to claim 5, wherein The lifting assembly includes a lifting structure, a support ring body, a limiting ring body and a rotating track. The moving assembly of the lifting structure is installed inside the mixing barrel. The support ring body is installed on the moving assembly of the lifting structure, and the inner diameter of the support ring body is not less than the inner circle diameter of the bearing plate. The limiting ring body is installed on the top of the support ring body, and the horizontal cross-section of the limiting ring body is set in a "T" shape. The rotating track is annularly arranged at the bottom of the bearing plate, and the horizontal cross-section of the rotating track matches the shape of the limiting ring body. The top end of the limiting ring body is clamped and movably installed inside the rotating track.

7. The pretreatment device for ultra-trace actinide enrichment in seawater according to claim 6, wherein The linkage assembly includes an internal gear ring, a sliding rod, a transmission gear and an external gear ring. The internal gear ring is installed on the rotating rod through a synchronous rotating assembly and can be displaced up and down. The internal gear ring includes an upper tooth plate and an internal gear ring. The upper tooth plate is fixedly installed at the top of the internal gear ring, and the outer diameter of the outer circle of the upper tooth plate is larger than the outer diameter of the outer circle of the internal gear ring. The sliding rod is fixedly installed on the inner top wall of the gear channel of the sleeve. The transmission gear is rotatably installed on the sliding rod and can be displaced up and down, and the transmission gear meshes with the internal gear ring. The top of the transmission gear abuts against the bottom of the upper tooth plate, and the diameter of the transmission gear is smaller than the diameter of the internal gear ring. The external gear ring is fixedly installed on the inner ring surface of the bearing plate. The external gear ring includes a lower tooth plate and an external gear ring. The lower tooth plate is fixedly installed at the bottom of the external gear ring, and the outer diameter of the outer circle of the lower tooth plate is larger than the outer diameter of the outer circle of the external gear ring. The external gear ring meshes with the transmission gear, and the top of the lower tooth plate abuts against the bottom of the transmission gear.

8. The pretreatment device for enriching transuranic nuclides in seawater according to any one of claims 1 to 7, characterized in that, The stirring blade assembly includes a sliding connecting piece and stirring blades. The sliding connecting piece penetrates and is slidably arranged on the sliding channel, and the surface of the sliding connecting piece is in fitting connection with the inner wall of the sliding channel. The stirring blades are rotatably installed at one end of the sliding connecting piece away from the sliding channel, and the stirring blades are arranged to rotate in one direction. A plurality of groups of through holes are provided through the top of the stirring blades.

9. The pretreatment device applied to the enrichment of transuranic nuclides in seawater according to claim 8, characterized in that, A turning mechanism is installed on the fixing frame. The turning mechanism includes a guide rod, an extending channel, a stop block and a telescopic spring. The guide rod is fixedly installed on the top of the stirring blade near the rotation direction. The extending channel penetrates through the top of the fixing frame and is arranged in a circular ring shape. The stop block includes a horizontal plate body and a vertical plate body. One end of the horizontal plate body is slidably installed on the fixing frame through a telescopic component, and the other end is suspended above or inside the extending channel. The vertical plate body is fixedly installed at one end of the horizontal plate body near the extending channel, and the bottom end of the vertical plate body extends below the fixing frame.

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