Sealing and lifting device for iodine adsorber bracket of nuclear power plant

Abstract

The utility model discloses a nuclear power plant iodine adsorber bracket sealing and lifting device which comprises a mounting seat, a bracket, a rotating shaft, a connecting piece and a lifting mechanism, the rotating shaft is mounted on the mounting seat, the connecting piece is fixedly or detachably mounted on the rotating shaft, and the bracket is vertically and slidably connected to the rotating shaft through the lifting mechanism; the lifting mechanism comprises an extrusion assembly and a pre-tightening assembly; the extrusion assembly is fixedly or detachably installed on the rotating shaft and rotates along with the rotating shaft to extrude the bracket upwards. The pre-tightening assembly is detachably mounted between the mounting seat and the connecting piece, so that the rotating shaft always has rotating torsion to drive the extrusion assembly to extrude the bracket at the top of the filter box body. After long-time use, the iodine adsorber can be in close contact with the top of the filter box body, so that the sealing effect of the iodine adsorber and the top of the filter box body is improved, the purification efficiency of the iodine adsorber is improved, the service life of the filter is prolonged, the filtering cost is reduced, and the surrounding environment can be better protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power plant partial waste gas treatment technical field especially relates to a nuclear power plant iodine adsorber bracket seal lifting device. BACKGROUND

[0002] At present, nuclear power plant partial waste gas treatment needs to pass through iodine filter, according to the arrangement of ventilation pipe, the up-down air inlet type iodine filter is more widely used, and the up-down air inlet type iodine filter is tightly combined with the filter box top in the iodine adsorber and filter box through bracket tightening mechanism, guarantees the sealing of iodine adsorber and box, so that waste gas can be filtered.

[0003] The bracket tightening mechanism of the up-down air inlet type iodine filter of some prior art is driven by rocker arm to rotate cam, and the bracket is lifted or landed, so that the iodine adsorber on the bracket is combined with the filter box top or released. Because the weight of the currently used iodine adsorber is large, the bracket cannot be lifted again due to the gravity of the iodine adsorber and the cam, and the processing size error of the filter core will affect the sealing effect of the sealing surface, resulting in low efficiency of the newly replaced iodine filter, reduced service life of the filter and increased filtering cost. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem, and provides a nuclear power plant iodine adsorber bracket seal lifting device.

[0005] The utility model adopts the technical scheme in the technical solutions that solve the technical problems: a nuclear power plant iodine adsorber bracket seal lifting device is constructed, which comprises: a mounting seat, a bracket, a rotating shaft, a connecting piece and a lifting mechanism, the rotating shaft is installed on the mounting seat, the connecting piece is fixed or detachably installed on the rotating shaft, and the bracket is vertically slidably connected to the rotating shaft through the lifting mechanism.

[0006] The lifting mechanism comprises: an extrusion assembly and a pre-tightening assembly.

[0007] The extrusion assembly is fixed or detachably installed on the rotating shaft, and the bracket is extruded upwards along with the rotation of the rotating shaft.

[0008] The pre-tightening assembly is detachably installed between the mounting seat and the connecting piece, so that the rotating shaft always has a rotating torque, and the extrusion assembly is driven to extrude the bracket on the filter box top.

[0009] Further, the pre-tightening assembly comprises: a first connecting seat and an elastic piece, the first connecting seat is installed on the mounting seat, one end of the elastic piece is detachably installed on the connecting piece, and the other end of the elastic piece is detachably installed on the first connecting seat.

[0010] Further, the first connecting seat is provided with a groove for storing the elastic member, and the elastic member is provided with a ring at the end in contact with the connecting member.

[0011] Further, the pre-tightening assembly comprises a second connecting seat, a push rod and a first spring, the second connecting seat is installed on the mounting seat, the push rod is slidably arranged on the second connecting seat, the top end of the push rod is in contact with the connecting member, and the first spring is installed between the second connecting seat and the push rod in a compressed state.

[0012] Further, the nuclear power plant iodine adsorber bracket sealing lifting device further comprises a rocker arm and a handle, the rocker arm is provided with a limiting groove matched with the connecting member, the connecting member is slidably arranged in the limiting groove, and the handle is detachably installed on the rocker arm.

[0013] Further, the pre-tightening assembly comprises a second spring detachably installed between adjacent rocker arms and in a tensioned state.

[0014] Further, the pre-tightening assembly comprises a third spring detachably installed between the rocker arm and the mounting seat and in a tensioned state.

[0015] Further, the extrusion assembly comprises a cam fixedly or detachably installed on the rotating shaft.

[0016] Further, the extrusion assembly comprises a gear, an extrusion block and a rack, the gear is fixedly installed on the rotating shaft, the bracket is provided with a sliding groove, the extrusion block is slidably arranged in the sliding groove, the rack is installed on the extrusion block, and the gear is engaged with the rack.

[0017] Further, the bracket is provided with a notch, and the rotating shaft is inserted into the notch.

[0018] The implementation of the present application has the following beneficial effects:

[0019] The application is installed on the mounting seat through a rotating shaft, the connecting piece is fixedly or detachably installed on the rotating shaft, and the bracket is installed on the rotating shaft through a lifting mechanism; the lifting mechanism comprises an extrusion assembly and a pre-tightening assembly; the extrusion assembly is fixedly or detachably installed on the rotating shaft and extrudes the bracket upward in rotation with the rotating shaft; the pre-tightening assembly is detachably installed between the mounting seat and the connecting piece, so that the rotating shaft always has a rotating torque to drive the extrusion assembly to extrude the bracket on the top of the filter box, the operator can rotate the rotating shaft more conveniently and labor-savingly through the connecting piece, the labor intensity is reduced, the installation time is saved, the rotating shaft always maintains the rotating trend of driving the extrusion assembly to lift the bracket through the pre-tightening assembly, the rotating shaft always has a rotating torque, the extrusion assembly always has the lifting force of lifting the bracket upward, the bracket can drive the iodine adsorber to always tightly adhere to the top of the filter box, the iodine adsorber and the top of the filter box can also maintain the close contact after long-time use, the sealing effect of the iodine adsorber and the top of the filter box is improved, the purification efficiency of the iodine adsorber and the service life of the filter are improved, the filtering cost is reduced, and the surrounding environment can be more protected. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the present application, the present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] In the drawings:

[0022] Figure 1 is a structural schematic view of the nuclear power plant iodine adsorber bracket sealing lifting device in some embodiments of the present application;

[0023] Figure 2 is a structural schematic view of the extrusion assembly in the present application;

[0024] Figure 3 is a structural schematic view of the pre-tightening assembly in the present application;

[0025] Figure 4 is a structural schematic view of the pre-tightening assembly in another embodiment of the present application;

[0026] Figure 5 is a structural schematic view of the sliding groove in the present application;

[0027] Figure 6 is a structural schematic view of the extrusion assembly in another embodiment of the present application.

[0028] Legend to the drawings

[0029] Mounting base 1, bracket 2, rotating shaft 3, connecting piece 4, lifting mechanism 5, extrusion assembly 51, cam 511, gear 512, extrusion block 513, rack 514, slide groove 515, pre-tightening assembly 52, first connecting seat 521, first elastic element 522, groove 523, ring 524, second connecting seat 525, push rod 526, first spring 527, second spring 528, rocker arm 6, limiting groove 61, handle 7, slot 8. Detailed Implementation

[0030] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0031] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0033] Please refer to Figures 1 to 3 The nuclear power plant iodine adsorber bracket sealing lifting device in the first embodiment of the utility model, this nuclear power plant iodine adsorber bracket sealing lifting device includes: mounting seat 1, bracket 2, rotating shaft 3, connecting piece 4 and lifting mechanism 5, rotating shaft 3 is installed on mounting seat 1, connecting piece 4 is fixed or detachably installed on rotating shaft 3, and bracket 2 is installed on rotating shaft 3 through lifting mechanism 5;Lifting mechanism 5 includes: extrusion assembly 51 and pre-tightening assembly 52;Extrusion assembly 51 is fixed or detachably installed on rotating shaft 3, and bracket 2 is extruded upwards by following rotating shaft 3 rotation;Pre-tightening assembly 52 is detachably installed between mounting seat 1 and connecting piece 4, so that rotating shaft 3 always has rotating torque, and bracket 2 is extruded by driving extrusion assembly 51 to the top of filter box body.

[0034] Wherein, mounting seat 1 is installed in filter box body, then installer rotates rotating shaft 3, makes rotating shaft 3 drive extrusion assembly 51 to rotate or move, makes extrusion assembly 51 upwardly lift bracket 2, and the installed iodine adsorber on bracket 2 is lifted to contact with the top of filter box body, so that the iodine adsorber on bracket 2 is in close contact with filter box body.After that, the installer installs pre-tightening assembly 52 between mounting seat 1 and connecting piece 4, and continues to maintain the trend of rotation by using pre-tightening assembly 52 to drive rotating shaft 3, so that rotating shaft 3 always has rotating torque, and bracket 2 is extruded on filter box body by driving extrusion assembly 51, then pre-tightening assembly 52 can always make rotating shaft 3 have rotating torque after long time use, and bracket 2 is always extruded closely on filter box body by using rotating torque to drive extrusion assembly 51, the gap between filter box body top and iodine adsorber is reduced, and then long time close contact can be provided, the sealing property between filter box body top and iodine adsorber is improved, and the filtering effect is improved.

[0035] The application is installed on the mounting seat 1 through the rotating shaft 3, the connecting piece 4 is fixedly or detachably installed on the rotating shaft 3, and the bracket 2 is installed on the rotating shaft 3 through the lifting mechanism 5; the lifting mechanism 5 comprises: an extrusion assembly 51 and a pre-tightening assembly 52; the extrusion assembly 51 is fixedly or detachably installed on the rotating shaft 3, and the bracket 2 is extruded upward by following the rotating shaft 3; the pre-tightening assembly 52 is detachably installed between the mounting seat 1 and the connecting piece 4, so that the rotating shaft 3 always has a rotating torque, drives the extrusion assembly 51 to extrude the bracket 2 on the top of the filter box, the operator can rotate the rotating shaft 3 more conveniently and labor-saving through the connecting piece 4, the labor intensity is reduced, the installation time is saved, the rotating shaft 3 always maintains the rotating trend of driving the extrusion assembly 51 to lift the bracket 2 by utilizing the pre-tightening assembly 52, the rotating shaft 3 always has a rotating torque, the extrusion assembly 51 always has the lifting force of lifting the bracket 2 upward, the bracket 2 can drive the iodine adsorber to always closely adhere to the top of the filter box, and then the iodine adsorber and the top of the filter box can also keep close contact after long-time use, the sealing effect of the iodine adsorber and the top of the filter box is improved, then the purification efficiency of the iodine adsorber and the service life of the filter are improved, the filtering cost is reduced, and the surrounding environment can be more protected.

[0036] Please refer to Figures 1 to 3 In some embodiments, the pre-tightening assembly 52 comprises: a first connecting seat 521 and an elastic piece 522, the first connecting seat 521 is installed on the mounting seat 1, one end of the elastic piece 522 is detachably installed on the connecting piece 4, and the other end of the elastic piece 522 is detachably installed on the first connecting seat 521.

[0037] The application is installed on the mounting seat 1 through the first connecting seat 521, one end of the elastic piece 522 is detachably installed on the connecting piece 4, and the other end of the elastic piece 522 is detachably installed on the first connecting seat 521, when the rotating shaft 3 rotates to the state that the bracket 2 closely contacts the top of the filter box, the installer installs the elastic piece 522 between the first connecting seat 521 and the connecting piece 4, the rotating torque of the rotating shaft 3 can be improved through the connecting piece 4 because the connecting piece 4 is arranged on the periphery of the rotating shaft 3, then the rotating shaft 3 always receives the rotating torque by utilizing the elastic force of the elastic piece 522, and then the installation is more convenient, the iodine adsorber and the top of the filter box can also keep close contact after long-time use, the sealing effect of the iodine adsorber and the top of the filter box is improved, and the filtering effect is further improved.

[0038] The elastic piece 522 can be in the form of a circular arc, the circular arc-shaped elastic piece 522 can generate greater elasticity, the elastic piece 522 can also be a torsion spring arranged between the rotating shaft 3 and the mounting seat 1, or a clock spring arranged between the rotating shaft 3 and the mounting seat 1, and the occupied space after installation can be reduced, and the operation is facilitated.

[0039] Please refer toFigure 3 In some embodiments, the first connecting seat 521 is provided with a groove 523 for storing the elastic member 522, and the elastic member 522 is provided with a ring 524 at the end in contact with the connecting piece 4.

[0040] The groove 523 is provided on the first connecting seat 521 for storing the elastic member 522, and the elastic member 522 is provided with a ring 524 at the end in contact with the connecting piece 4. The installer can first fit the ring 524 on the connecting piece 4, and then rotate the elastic member 522 around the rotating shaft 3, so that the elastic member 522 drives the rotating shaft 3 to continue rotating through the connecting piece 4. When the iodine adsorber is tightly attached to the top of the filter box, the installer overcomes the elasticity of the elastic member 522 and continues to bend the elastic member 522, so that the other end of the elastic member 522 enters the groove 523, thereby making the elastic member 522 always produce elastic force on the rotating shaft 3, so that the rotating shaft 3 always has rotating torque, improving the sealing effect of the top of the iodine adsorber and the filter box. The groove 523 and the ring 524 can stably and firmly install the elastic member 522 between the connecting piece 4 and the first connecting seat 521, thereby improving the stability of the long-time operation of the elastic member 522, making the operation more convenient, and reducing the labor intensity.

[0041] Please refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the pre-tightening assembly 52 includes a second connecting seat 525, a push rod 526, and a first spring 527. The second connecting seat 525 is installed on the mounting seat 1, the push rod 526 slides on the second connecting seat 525, the top end of the push rod 526 is in contact with the connecting piece 4, and the first spring 527 is installed between the second connecting seat 525 and the push rod 526 in a compressed state.

[0042] The second connecting seat 525 is installed on the mounting seat 1, the push rod 526 slides on the second connecting seat 525, the top end of the push rod 526 is in contact with the connecting piece 4, and the first spring 527 is installed between the second connecting seat 525 and the push rod 526 in a compressed state. During installation, the installer first overcomes the elastic force of the first spring 527 and pulls the push rod 526 downward, so that the push rod 526 is separated from the connecting piece 4. Then, the rotating shaft 3 is rotated through the connecting piece 4. When the iodine adsorber contacts the top of the filter box, the installer releases the restriction on the push rod 526, so that the push rod 526 moves upward under the action of the first spring 527. The upward moving push rod 526 will contact the connecting piece 4, causing the connecting piece 4 to rotate around the axis of the rotating shaft 3, thereby generating rotating torque on the rotating shaft 3. This facilitates operation, reduces the occupied space after installation, improves the sealing effect of the top of the iodine adsorber and the filter box, and further improves the filtering effect.

[0043] Please refer to Figure 1 andFigure 2 In some embodiments, the nuclear power plant iodine adsorber bracket sealing lifting device further comprises a rocker arm 6 and a handle 7, the rocker arm 6 is provided with a limiting groove 61 matched with the connecting piece 4, and the connecting piece 4 is slidably arranged in the limiting groove 61, and the handle 7 is detachably mounted on the rocker arm 6.

[0044] The application further comprises a rocker arm 6 and a handle 7, the rocker arm 6 is provided with a limiting groove 61 matched with the connecting piece 4, and the connecting piece 4 is slidably arranged in the limiting groove 61, and the handle 7 is detachably mounted on the rocker arm 6. The installer inserts one end of the rocker arm 6 into the connecting piece 4 through the limiting groove 61, and then inserts the handle 7 into the other end of the rocker arm 6, so that the rocker arm 6 and the handle 7 form an L shape, and then the handle 7 is rotated to drive the shaft 3 to rotate through the rocker arm 6, so that the installer can rotate the shaft 3 more easily, the shaft 3 drives the bracket 2 to move upward, reduces the labor intensity, and improves the installation efficiency. After installation is completed, the installer can detach the rocker arm 6 and the handle 7, save the space inside the filter box, facilitate operation, and improve the filtering efficiency.

[0045] Please refer to Figure 1 In some embodiments, the pre-tightening assembly 52 comprises a second spring 528 detachably mounted between adjacent rocker arms 6 and in a tensioned state.

[0046] The shaft 3 can be symmetrically mounted on the mounting seat 1, and the two extrusion assemblies 51 mounted on the shaft 3 can simultaneously lift the bracket 2 when the two shafts 3 rotate in opposite directions, and the two shafts 3 can disperse the gravity of the bracket 2 and the iodine adsorber, further reducing the labor intensity of the installer and making the bracket 2 more stable during the lifting process.

[0047] The pre-tightening assembly 52 comprises a second spring 528 detachably mounted between adjacent rocker arms 6 and in a tensioned state, and the two ends of the second spring 528 are arc-shaped, so that the two ends of the second spring 528 can be hooked on the rocker arm 6. The self-elasticity of the second spring 528 after installation causes the two adjacent rocker arms 6 to continue to have opposite rotation tendencies, the rocker arm 6 drives the respective shaft 3 to always generate a rotating torque, and after installation is completed, the installer only needs to detach the handle 7, and the two rocker arms 6 always remain in the filter box. The second spring 528 always provides a rotating torque for the two shafts 3, thereby making the installation simple and convenient, improving the installation efficiency, saving the manufacturing cost, improving the sealing effect of the iodine adsorber and the top of the filter box, and further improving the filtering effect.

[0048] In some embodiments, the pre-tightening assembly 52 comprises a third spring detachably mounted between the rocker arm 6 and the mounting seat 1 and in a tensioned state.

[0049] The pre-tightening assembly 52 comprises a third spring detachably mounted between the rocker arm 6 and the mounting base 1, and in a tensioned state, the elastic force generated by the third spring enables the rocker arm 6 to continuously drive the rotating shaft 3 to rotate upwardly relative to the bracket 2, so that the rotating shaft 3 always extrudes the iodine adsorber on the bracket 2 to the top of the filter box through the extrusion assembly 51, thereby achieving convenient installation, reducing labor intensity, and improving the sealing effect of the iodine adsorber and the top of the filter box.

[0050] Please refer to Figure 6 In some embodiments, the extrusion assembly 51 comprises a cam 511 fixedly or detachably mounted on the rotating shaft 3.

[0051] The extrusion assembly 51 comprises a cam 511 fixedly or detachably mounted on the rotating shaft 3, and the rotating shaft 3 drives the cam 511 to rotate when the rotating shaft 3 rotates, and the protruding surface of the rotating cam 511 pushes the bracket 2 upward, thereby extruding the iodine adsorber on the bracket 2 to the top of the filter box. The whole structure is relatively simple and not easy to be damaged, which saves the manufacturing cost and prolongs the service life of the whole device.

[0052] Please refer to Figure 2 and Figure 5 In some embodiments, the extrusion assembly 51 comprises a gear 512, an extrusion block 513 and a rack 514, the gear 512 is fixedly mounted on the rotating shaft 3, the mounting base 1 is provided with a sliding groove 515, the extrusion block 513 slides in the sliding groove 515, the rack 514 is mounted on the extrusion block 513, and the gear 512 is engaged with the rack 514.

[0053] The extrusion block 513 is in the shape of a right triangle, and the right angle side of the right triangle-shaped extrusion block 513 is in contact with the upper part of the bracket 2. When the extrusion block 513 passes between the gear 512 and the bracket 2, the bracket 2 is gradually extruded upward, so that the bracket 2 slides upward.

[0054] The extrusion block 513 can also be in the shape of a circular arc, and the circular arc-shaped extrusion block 513 is slowly moved between the gear 512 and the bracket 2, so that the extrusion block 513 extrudes the bracket 2 upward, and the bracket 2 slides upward.

[0055] The bracket 2 is fixedly installed on the gear 512, the sliding groove 515 is arranged on the bracket 2, the extrusion block 513 is slidably arranged in the sliding groove 515, the rack 514 is arranged on the extrusion block 513, the gear 512 is engaged with the rack 514, the rotation of the rotating shaft 3 drives the gear 512 to rotate, the rotation of the gear 512 drives the extrusion block 513 to slide in the sliding groove 515 through the engagement with the rack 514, the height of the extrusion block 513 between the gear 512 and the bracket 2 is preliminarily increased, and then the bracket 2 is gradually lifted by the extrusion block 513, the horizontal angle gradually increases through the gear 512, the gravity of the iodine adsorber is distributed to the tangential force of the gear 512, and the bracket 2 can be easily lifted by rotating the rotating shaft 3. After the pressing state is reached, the counterweight can be applied to the rocker arm 6, so that the rocker arm 6 generates a certain pre-tightening torque on the rotating shaft 3, the gravity of the iodine adsorber and the downward wind pressure can be overcome, and then the iodine adsorber and the filter box body can be tightly attached to the top, so that the sealing property is guaranteed.

[0056] Please refer to Figure 3 and Figure 4 In some embodiments, the bracket 2 is provided with the notch 8, and the rotating shaft 3 is inserted into the notch 8.

[0057] The extrusion block 513 is slidably connected in the sliding groove 515, the cooperation between the extrusion block 513 and the gear 512 limits the forward and backward sliding of the bracket 2, and the bracket 2 can be more stably slid on the upper portion of the mounting seat 1.

[0058] The notch 8 is arranged on the bracket 2, and the rotating shaft 3 is inserted into the notch 8, the rotating shaft 3 limits the left and right movement of the bracket 2, and then the bracket 2 can only be vertically slid above the mounting seat 1, the stability of the bracket 2 when lifting the iodine adsorber is improved, and then the operation and installation are facilitated, and the manufacturing cost is saved.

[0059] It can be understood that the above embodiments only express the preferred embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range; it should be pointed out that the above technical features can be freely combined without departing from the concept of the utility model, and a plurality of deformations and improvements can be made, which belong to the protection range of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model claim should belong to the coverage range of the utility model claim.

Claims

1. A nuclear power plant iodine adsorber carrier seal lifting device characterized by, The utility model relates to a nuclear power plant iodine adsorber bracket sealing lifting device, including: Mounting base (1), bracket (2), pivot (3), connecting piece (4) and lifting mechanism (5), the pivot (3) is installed on the mounting base (1), the connecting piece (4) is fixed or detachably installed on pivot (3), the bracket (2) is vertically slidingly connected on pivot (3) through lifting mechanism (5), The lifting mechanism (5) includes: extrusion assembly (51) and pre-tightening assembly (52), The extrusion assembly (51) is fixed or detachably installed on pivot (3), and the bracket (2) is extruded upwards by following the rotation of pivot (3), The pre-tightening assembly (52) is detachably installed between mounting base (1) and connecting piece (4), so that pivot (3) always has rotating torque, drives the extrusion assembly (51) and extrudes the bracket (2) on the top of filter box.

2. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, The pre-tightening assembly (52) includes: first connecting seat (521) and elastic member (522), the first connecting seat (521) is installed on the mounting base (1), one end of the elastic member (522) is detachably installed on the connecting piece (4), and the other end of the elastic member (522) is detachably installed on the first connecting seat (521).

3. The nuclear power plant iodine adsorber carrier seal lifting device of claim 2, wherein, A groove (523) for storing the elastic member (522) is formed in the first connecting seat (521), and a circular ring (524) is arranged at the end of the elastic member (522) in contact with the connecting piece (4).

4. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, The pre-tightening assembly (52) includes: second connecting seat (525), push rod (526) and first spring (527), the second connecting seat (525) is installed on the mounting base (1), the push rod (526) slides on the second connecting seat (525), the top end of the push rod (526) is in contact with the connecting piece (4), and the first spring (527) is installed between the second connecting seat (525) and the push rod (526) and is in a compressed state.

5. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, The nuclear power plant iodine adsorber bracket sealing lifting device further includes: rocker arm (6) and handle (7), a limiting groove (61) is formed in the rocker arm (6) and matched with the connecting piece (4), the connecting piece (4) is slidingly arranged in the limiting groove (61), and the handle (7) is detachably installed on the rocker arm (6).

6. The nuclear power plant iodine adsorber carrier seal lifting device of claim 5, wherein, The pre-tightening assembly (52) includes a second spring (528) detachably installed between adjacent rocker arms (6) and in a tensioned state.

7. The nuclear power plant iodine adsorber carrier seal lifting device of claim 5, wherein, The pre-tightening assembly (52) includes a third spring detachably installed between the rocker arm (6) and the mounting base (1) and in a tensioned state.

8. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, The extrusion assembly (51) includes a cam (511) fixed or detachably installed on the pivot (3).

9. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, The extrusion assembly (51) comprises a gear (512), an extrusion block (513) and a rack (514), the gear (512) is fixedly installed on the rotating shaft (3), a sliding groove (515) is arranged on the bracket (2), the extrusion block (513) slides in the sliding groove (515), the rack (514) is installed on the extrusion block (513), and the gear (512) is engaged with the rack (514).

10. The nuclear power plant iodine adsorber carrier seal lifting device of claim 1, wherein, A slot (8) is formed on the bracket (2), and the rotating shaft (3) is inserted into the slot (8).

Images