Device for eliminating frequent leakage of inlet and outlet pipelines of absorption circulating pump

Abstract

The utility model discloses a device for eliminating and absorbing frequent leakage of inlet and outlet pipelines of a circulating pump, which comprises a circulating pump body, a conveying pipeline and an expansion joint, the expansion joint comprises a corrugated pipe and a pair of connecting flanges, and the connecting flanges are respectively arranged at two ends of the corrugated pipe. A plurality of mounting grooves are circumferentially formed in the sides, close to each other, of the connecting flanges at equal intervals, and the connecting flanges are connected with an outlet of the circulating pump body and a flange on the conveying pipeline through bolts respectively. Through the arrangement of the fastening ring, the adjusting mechanism, the extrusion ring and other structures, the corrugated pipe can be rapidly and independently detached for replacement, overall replacement is not needed, cost consumption is reduced, meanwhile, the detaching process is convenient, the situation that a conveying pipeline is not aligned with an inlet and outlet flange of a circulating pump, and installation of a new expansion joint is affected is not needed, and the practicability is high. And the convenience of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline accessory technical field especially relates to a kind of eliminate absorption circulating pump import and export pipeline frequent leakage device. BACKGROUND

[0002] In caustic soda branch plant production operation process, waste gas absorption sodium hypochlorite pipeline is caused by the problem of CPVC pipeline thermal expansion and cold shrink due to large temperature difference, and further caused by pipeline weld frequent leakage, which constitutes a great hidden danger for on-site safe operation, and increases the maintenance frequency, the existing waste gas absorption circulating pump import and export will increase expansion joint, for offsetting the displacement generated by thermal expansion and cold shrink, avoid the effect that waste gas circulating pump import and export pipeline frequent leakage, reduce the frequency of repair, achieve intrinsic safety.

[0003] For example, Chinese invention patent (CN115493015A) discloses an expansion joint structure, which has automatic adjustment function of spacing and position through two connecting flanges; when the air in the bellows flows, the control plate moves under the air pressure, and when the air in the bellows stops flowing, the control plate is automatically reset under the action of spring D, which plays a sealing effect; solve the problem that the two flanges do not have automatic adjustment function of spacing and position, and cannot automatically seal when the air in the bellows stops flowing.

[0004] However, the present inventors found the following defects when implementing the device, since the expansion joint is of an integral structure, and then when the expansion joint needs to be replaced due to damage after long-term use, the entire expansion joint needs to be replaced, however, since the expansion joint is connected to the inlet and outlet of the pipeline and circulating pump through multiple bolts, not only time-consuming and laborious during disassembly and assembly, but also in the case of long-term displacement of the expansion joint after long-term use, the flanges of the pipeline and circulating pump inlet and outlet are not aligned, and during replacement, the flanges on the pipeline need to be cut off and re-welded, greatly reducing the maintenance efficiency of the device.

[0005] Therefore, a kind of eliminate absorption circulating pump import and export pipeline frequent leakage device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] Therefore, it is necessary to provide a kind of eliminate absorption circulating pump import and export pipeline frequent leakage device to solve the above technical problems, a detachable structure of bellows is arranged on the connecting flange, and the fastening structure of the bellows, when using the device, the bellows can be replaced separately, without the need for overall replacement, reducing the cost consumption.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model provides an eliminate absorption circulating pump import and export pipeline frequent leakage device, including circulating pump body, conveying pipeline and expansion joint, expansion joint contains bellows and connecting flange, connecting flange is provided with a pair, and connecting flange is arranged respectively at both ends of bellows, the side of connecting flange close to is all opened with a plurality of installation slot in the circumference equidistance, the flange on the outlet of circulating pump body and conveying pipeline are connected respectively through bolt of connecting flange, the side of connecting flange close to is all opened with screw groove, the inside of screw groove is all connected with fastening ring in screw thread, both ends of bellows are fixedly connected with extrusion ring, the inside of fastening ring is equipped with three for pushing extrusion ring push block, be equipped with the adjusting mechanism for adjusting the position of three push block on the fastening ring.

[0009] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, the side of connecting flange close to is opened with upper groove relative to the position below fastening ring, the size of extrusion ring is compatible with the size of upper groove.

[0010] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, the inside of upper groove is fixedly connected with sealing ring.

[0011] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, the adjusting mechanism includes adjusting ring, adjusting cavity is opened in the inside of fastening ring, the adjusting ring is arranged in the inside of adjusting cavity, three extrusion slots are opened in the inside of adjusting ring equidistance, the inside of adjusting cavity is set up in the side of push block far away from all and is penetrated, the lateral wall of adjusting ring and the position corresponding with installation slot all are opened with through groove.

[0012] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, three extrusion slots are half fan shape, and the inside of extrusion slot is contacted with the end of push block far away from all.

[0013] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, the end of push block far away from all is set up as smooth circular arc surface, the lateral wall of push block is all fixedly connected with side plate, and the inside of adjusting cavity is fixedly connected with spring between the lateral wall of side plate.

[0014] As a preferred embodiment of the utility model provides the eliminate absorption circulating pump import and export pipeline frequent leakage device, the lateral wall of fastening ring is opened with arc slot, the inside of arc slot is equipped with fastening bolt, and fastening bolt is connected on adjusting ring in screw thread penetration, and the inside of adjusting cavity is contacted with the side end of fastening bolt.

[0015] As a preferred embodiment of the utility model provides the device for eliminating frequent leakage of the inlet and outlet pipeline of the absorption circulating pump, the push plate is fixedly connected with the equidistance on the side wall of the fastening ring.

[0016] As a preferred embodiment of the utility model provides the device for eliminating frequent leakage of the inlet and outlet pipeline of the absorption circulating pump, the mounting lug is fixedly connected with the equidistance on the outer wall of the connecting flange, and the transport pull rod for adjusting the expansion amount is arranged between the three mounting lugs, the adjusting nut is threadedly connected to the outer wall of the transport pull rod and located on both sides of the mounting lug, and the size of the bellows is less than the diameter between the adjacent two transport pull rods.

[0017] As a preferred embodiment of the utility model provides the device for eliminating frequent leakage of the inlet and outlet pipeline of the absorption circulating pump, the depth of the threaded groove is greater than the width of the fastening ring, the movable guide frame is installed on the conveying pipeline, and the top groove is formed in the side wall of the fastening ring corresponding to the mounting groove position.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The device for eliminating frequent leakage of the inlet and outlet pipeline of the absorption circulating pump provided by the utility model can quickly disassemble and replace the bellows alone, does not need to be replaced as a whole, reduces cost consumption, is convenient to disassemble, does not need to worry about the misalignment of the conveying pipeline and the inlet and outlet flanges of the circulating pump, and the installation of the new expansion joint is not affected, and the convenience of the device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the scheme in the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The overall appearance structure schematic view of the expansion joint provided by the utility model is shown in the figure.

[0022] Figure 2 The overall appearance structure schematic view of the expansion joint provided by the utility model is shown in the figure.

[0023] Figure 3 The front full-section perspective structure schematic view of the expansion joint provided by the utility model is shown in the figure.

[0024] Figure 4 The separation perspective structure schematic view of the fastening ring and the bellows provided by the utility model is shown in the figure.

[0025] Figure 5 The fastening ring opening side surface three-dimensional structure schematic view is provided for the utility model;

[0026] Figure 6 The utility model provides an attached Figure 5 The local amplification structure schematic view of A place in the middle;

[0027] The figure mark explanation is as follows:

[0028] 1, circulating pump body;2, conveying pipeline;3, bellows;4, connecting flange;5, mounting groove;6, thread groove;7, fastening ring;8, extrusion ring;9, push block;10, upper groove;11, sealing ring;12, adjusting ring;13, extrusion groove;14, side plate;15, spring;16, through groove;17, arc groove;18, fastening bolt;19, push plate;20, mounting lug;21, adjusting nut;22, transportation pull rod;23, movable guide frame;24, top groove;25, expansion joint. Specific implementation

[0029] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor should belong to the protection scope of the utility model.

[0030] As described in the background, the expansion joint 25 is a one-piece structure, and then when the expansion joint 25 is damaged and needs to be replaced after long-term use, the entire expansion joint 25 needs to be replaced.

[0031] In order to solve this technical problem, the utility model provides a kind of device for eliminating frequent leakage of absorption circulating pump inlet and outlet pipeline, specifically, please refer to Figures 1-6 , specifically including circulating pump body 1, conveying pipeline 2 and expansion joint 25, expansion joint 25 includes bellows 3 and connecting flange 4, connecting flange 4 is provided with a pair, and connecting flange 4 is respectively arranged at the both ends of bellows 3, a plurality of mounting grooves 5 are opened in the side of connecting flange 4 close to each other in circumferential equidistance, connecting flange 4 is connected with the flange on the outlet of circulating pump body 1 and conveying pipeline 2 respectively by bolt, the side of connecting flange 4 close to each other is all provided with thread groove 6, fastening ring 7 is screw connected in the inside of thread groove 6, extrusion ring 8 is fixedly connected at the both ends of bellows 3, three push blocks 9 for pushing extrusion ring 8 are arranged on the inside of fastening ring 7, adjusting mechanism for adjusting the position of three push blocks 9 is arranged on fastening ring 7.

[0032] The device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump is provided with the detachable structure of the corrugated pipe 3 on the connecting flange 4, when the corrugated pipe 3 is damaged and needs to be replaced individually during long-term use of the device, the fastening ring 7 can be rotated in the threaded groove 6, the fastening ring 7 is moved outwards and the pushing block 9 is moved, the extrusion of the extrusion ring 8 is released, the sealing connection between the corrugated pipe 3 and the connecting flange 4 is released, then the pushing block 9 is retracted by operating the adjusting mechanism, the fastening ring 7 is rotated into the threaded groove 6 in the reverse direction, the corrugated pipe 3 can be taken out and replaced individually, the device does not need to be replaced as a whole, the cost consumption is reduced, the disassembly process is convenient, the inlet and outlet flanges of the conveying pipeline 2 and the circulating pump body 1 are not out of alignment, the installation of the new expansion joint 25 is not affected, and the convenience performance of the device is greatly improved.

[0033] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0034] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0035] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] Embodiment 1

[0037] Please refer to Figures 1-6 A device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump, which comprises a circulating pump body 1, a conveying pipeline 2 and an expansion joint 25, the expansion joint 25 comprises a corrugated pipe 3 and a connecting flange 4, the connecting flange 4 is provided in pairs, and the connecting flange 4 is arranged at both ends of the corrugated pipe 3, respectively, a plurality of installation grooves 5 are evenly arranged on the side of the connecting flange 4 close to each other in a circumferential direction, so as to avoid blocking the bolts passing through the connecting flange 4 and connecting with the flanges on the circulating pump body 1 and the conveying pipeline 2, the connecting flange 4 is connected with the outlet of the circulating pump body 1 and the flange on the conveying pipeline 2 through bolts, respectively, a threaded groove 6 is arranged on the side of the connecting flange 4 close to each other, a fastening ring 7 is threadedly connected to the inner side of the threaded groove 6, an extrusion ring 8 is fixedly connected to both ends of the corrugated pipe 3, three pushing blocks 9 for pushing the extrusion ring 8 are arranged on the inner side of the fastening ring 7, the position of the extrusion ring 8 can be limited by the pushing blocks 9, and the sealing connection between the extrusion ring 8 and the connecting flange 4 is pushed, an adjusting mechanism for adjusting the positions of the three pushing blocks 9 is arranged on the fastening ring 7;

[0038] When the bellows 3 in the expansion joint 25 is damaged and needs to be replaced, first push the fastening ring 7 to rotate in the threaded groove 6, and then move the push block 9, thereby releasing the extrusion of the extrusion ring 8, and releasing the sealing connection between the bellows 3 and the connecting flange 4;

[0039] The adjusting mechanism includes an adjusting ring 12, the inside of the fastening ring 7 is provided with an adjusting cavity, the adjusting ring 12 is arranged inside the adjusting cavity, three extrusion grooves 13 are equidistantly arranged inside the adjusting ring 12, the push block 9 is arranged on the side away from the push block 9, and a through groove 16 is arranged on the side wall of the adjusting ring 12 and corresponds to the mounting groove 5. Through the arrangement of the through groove 16, the bolts are prevented from passing through the connecting flange 4 and the flanges on the circulating pump body 1 and the conveying pipeline 2.

[0040] The three extrusion grooves 13 are in the shape of a half sector, so that the push block 9 can be adjusted in position by rotating the adjusting ring 12 and extruding the push block 9 through the extrusion grooves 13, and the end of the push block 9 away from the push block 9 is in contact with the inside of the extrusion groove 13.

[0041] The side wall of the fastening ring 7 is provided with an arc-shaped groove 17, the arc-shaped groove 17 is arranged to prevent the movement of the fastening bolt 18 when the adjusting ring 12 is rotated, thereby affecting the normal adjustment of the device, the arc-shaped groove 17 is provided with the fastening bolt 18, the fastening bolt 18 is screwed into the adjusting ring 12, and the side end of the fastening bolt 18 abuts against the inside of the adjusting cavity. Through the arrangement of the fastening bolt 18, the position of the adjusting ring 12 can be limited, thereby ensuring the stability of the position of the adjusting ring 12 after adjustment.

[0042] Then, the fastening bolt 18 is unscrewed (without unscrewing the fastening bolt 18 from the adjusting ring 12), the position of the adjusting ring 12 is released, then the fastening bolt 18 is pushed to rotate the adjusting ring 12, the fastening bolt 18 moves in the arc-shaped groove 17, thereby rotating the adjusting ring 12, changing the position of the extrusion groove 13 on the push block 9, thereby releasing the extrusion of the push block 9, and then moving the side plate 14 and the push block 9 under the elastic force of the spring 15, thereby sliding the push block 9 into the adjusting cavity, releasing the extrusion of the extrusion ring 8, then reversely pushing the fastening ring 7 into the threaded groove 6, thereby releasing the position limitation of the extrusion ring 8, finally, the other connecting flange 4 is operated as described above, the position of the bellows 3 is released, and the bellows 3 can be removed and replaced separately, then the new bellows 3 is placed in the upper groove 10, and the above operation is repeated in reverse to tightly connect the bellows 3 to the connecting flange 4.

[0043] The device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump provided by the embodiment can quickly disassemble and replace the corrugated pipe 3 without disassembling the connecting flange 4, and without changing the position of the conveying pipeline 2, so that the disassembly and replacement process is convenient, and there is no need to worry about the misalignment of the conveying pipeline 2 and the inlet and outlet flanges of the circulating pump body 1, which affects the installation of the new expansion joint 25, and greatly improves the convenience of the device.

[0044] Embodiment 2

[0045] The device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump provided by the embodiment is further optimized, and specifically, as shown in Figure 3 、 4 The connecting flange 4 is provided with an upper groove 10 on the side close to the lower position of the fastening ring 7, and the size of the extrusion ring 8 is matched with the size of the upper groove 10. Through the arrangement of the upper groove 10, the extrusion ring 8 and the connecting flange 4 can be quickly connected, the corrugated pipe 3 and the connecting flange 4 can be concentrically connected, and the convenience of the device installation is further improved.

[0046] In order to further improve the sealing performance of the device, the inner side of the upper groove 10 is fixedly connected with a sealing ring 11. Through the arrangement of the sealing ring 11, when the corrugated pipe 3 is installed, the extrusion ring 8 can extrude the sealing ring 11 in the upper groove 10 by rotating the fastening ring 7, so as to ensure the sealing connection between the extrusion ring 8 and the upper groove 10, and further ensure the sealing performance of the device after replacement.

[0047] Through the above structure design, the convenience during replacement is more conducive to be improved, and the service life of the device is increased.

[0048] Embodiment 3

[0049] The device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump provided by the embodiment is further optimized, and specifically, as shown in Figure 5 、 6 The end of the pushing block 9 away from the other end is provided as a smooth circular arc surface, which can be better extruded by the extrusion groove 13 to extrude and slide the pushing block 9. The outer wall of the pushing block 9 is fixedly connected with a side plate 14, and the outer wall of the side plate 14 and the inner side of the adjusting cavity are fixedly connected with a spring 15. Through the arrangement of the side plate 14 and the spring 15, when the extrusion groove 13 extrudes the pushing block 9 to move to the side close to the other side, the side plate 14 is driven to move, and the spring 15 is gradually compressed, so that when the pushing block 9 is retracted subsequently, the side plate 14 and the pushing block 9 are quickly reset by the elastic force of the spring 15, and the pushing block 9 is quickly retracted.

[0050] Embodiment 4

[0051] The device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump provided by the embodiment is further optimized, and specifically, as shown inFigures 2-4 As shown, the side wall of the fastening ring 7 is fixedly connected with a plurality of push plates 19 at equal intervals, and the push plates 19 facilitate the rotation of the fastening ring 7 by the replacement personnel, thereby facilitating the quick disassembly and assembly of the corrugated pipe 3, and further improving the convenience of the device.

[0052] In order to improve the service life of the expansion joint 25, three mounting ears 20 are fixedly connected to the outer wall of the connecting flange 4 at equal intervals, and a transportation pull rod 22 for adjusting the expansion amount is arranged between the three mounting ears 20, and the outer wall of the transportation pull rod 22 and the two sides of the mounting ear 20 are threadedly connected with an adjusting nut 21, and through the arrangement of the adjusting nut 21, the transportation pull rod 22 and the mounting ear 20, not only can prevent the corrugated pipe 3 from being impacted during transportation and prevent the welding seam from cracking due to vibration during transportation, but also can loosen the adjusting nut 21 according to the size of the expansion amount, so that the expansion joint 25 can be compensated in the later process, and the size of the corrugated pipe 3 is smaller than the diameter between the two adjacent transportation pull rods 22, so that the corrugated pipe 3 can be directly taken out after being disassembled from the connecting flange 4, without the need to disassemble the transportation pull rod 22 for replacing the corrugated pipe 3, thereby further improving the replacement efficiency of the device.

[0053] In order to ensure the stable operation of the device, the depth of the threaded groove 6 is greater than the width of the fastening ring 7, so as to facilitate the rotation of the fastening ring 7 into the threaded groove 6 to release the restriction on the extrusion ring 8, and the extrusion ring 8 can be directly taken out, and the movable guide frame 23 is arranged on the conveying pipeline 2, and through the arrangement of the movable guide frame 23, the conveying pipeline 2 can be moved when it is displaced, and the side wall of the fastening ring 7 is provided with a top groove 24 corresponding to the position of the mounting groove 5, and through the arrangement of the top groove 24, the bolt can pass through the connecting flange 4 and be connected with the external flange without being hindered.

[0054] The use process of the device for eliminating frequent leakage of the inlet and outlet pipelines of the absorption circulating pump is as follows:

[0055] When the corrugated pipe 3 in the expansion joint 25 is damaged and needs to be replaced, the fastening ring 7 is first rotated in the threaded groove 6, and then the fastening ring 7 is moved outward, and the push block 9 is moved, and the extrusion of the extrusion ring 8 is released, so that the sealing connection between the corrugated pipe 3 and the connecting flange 4 is released;

[0056] Then the fastening bolt 18 is screwed out (without screwing out the adjusting ring 12), the position limitation of the adjusting ring 12 is released, then the fastening bolt 18 is pushed to rotate the adjusting ring 12, the fastening bolt 18 moves in the arc-shaped groove 17, the adjusting ring 12 is rotated, the position of the extrusion groove 13 on the push block 9 is changed, the extrusion of the push block 9 is released, the side plate 14 and the push block 9 are moved under the elastic force of the spring 15, the push block 9 slides into the adjusting cavity, the extrusion of the extrusion ring 8 is released, then the fastening ring 7 is reversely pushed to screw into the threaded groove 6, the position limitation of the extrusion ring 8 is released, finally the connecting flange 4 on the other side is operated as above, the position limitation of the corrugated pipe 3 is released, the corrugated pipe 3 can be taken out from between the transportation pull rods 22 for separate replacement, then a new corrugated pipe 3 is passed through between the transportation pull rods 22, the extrusion ring 8 is placed beside the sealing ring 11 in the upper groove 10, and the above operation is reversely repeated to tightly connect the corrugated pipe 3 on the connecting flange 4.

[0057] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A device for eliminating frequent leakage of the inlet and outlet pipes of an absorption cycle pump, characterized in that, The utility model provides a circulating pump body (1), conveying pipeline (2) and expansion joint (25) including, expansion joint (25) contains bellow (3) and connecting flange (4), connecting flange (4) is provided with a pair, and connecting flange (4) is arranged respectively at bellow (3) both ends, and the side of connecting flange (4) close to is opened with a plurality of installation slot (5) in circumferential equidistance, and connecting flange (4) is connected with the flange on circulating pump body (1) export and conveying pipeline (2) respectively through bolt, and the side of connecting flange (4) close to is opened with screw groove (6), and the inboard of screw groove (6) is connected with fastening ring (7) in screw thread, and the both ends of bellow (3) are fixedly connected with extrusion ring (8), and the inboard of fastening ring (7) is equipped with three pusher block (9) for pushing extrusion ring (8), and the upper of fastening ring (7) is equipped with adjusting mechanism for adjusting the position of three pusher block (9).

2. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulating pump according to claim 1, characterized in that: The side of connecting flange (4) close to is opened with upper groove (10) relative to fastening ring (7) lower position, and the size of extrusion ring (8) is adapted to the size of upper groove (10).

3. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 2, characterized in that: The inboard of upper groove (10) is fixedly connected with sealing ring (11).

4. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 1, characterized in that: The adjusting mechanism includes an adjusting ring (12), an adjusting cavity is formed in the fastening ring (7), the adjusting ring (12) is arranged in the adjusting cavity, three extrusion grooves (13) are equidistantly formed in the inboard of the adjusting ring (12), the side away from the pusher block (9) is arranged through the inboard of the adjusting cavity, and a through groove (16) is formed in the side wall of the adjusting ring (12) and corresponds to the installation slot (5).

5. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 4, characterized in that: The three extrusion grooves (13) are half fan shapes, and the side away from the pusher block (9) is in contact with the inboard of the extrusion groove (13).

6. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 4, characterized in that: The side away from the pusher block (9) is a smooth arc surface, a side plate (14) is fixedly connected to the outer wall of the pusher block (9), and a spring (15) is fixedly connected between the outer wall of the side plate (14) and the inboard of the adjusting cavity.

7. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 4, characterized in that: An arc-shaped groove (17) is formed in the side wall of the fastening ring (7), a fastening bolt (18) is arranged in the inboard of the arc-shaped groove (17), the fastening bolt (18) is screwed into the adjusting ring (12), and the side end of the fastening bolt (18) is in contact with the inboard of the adjusting cavity.

8. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 1, characterized in that: A plurality of push plates (19) are equidistantly fixedly connected to the side wall of the fastening ring (7).

9. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 1, characterized in that: Three mounting ears (20) are equidistantly fixedly connected to the outer wall of the connecting flange (4), a transportation pull rod (22) for adjusting the expansion amount is arranged between the three mounting ears (20), adjusting nuts (21) are screwed into the outer wall of the transportation pull rod (22) and located on both sides of the mounting ears (20), and the size of the bellow (3) is smaller than the diameter between the adjacent two transportation pull rods (22).

10. The device for eliminating frequent leakage of the inlet and outlet pipes of the absorption circulation pump according to claim 1, characterized in that: The depth of the screw groove (6) is greater than the width of the fastening ring (7), a movable guide frame (23) is arranged on the conveying pipeline (2), and a top groove (24) is formed in the side wall of the fastening ring (7) and corresponds to the position of the installation slot (5).

Images