Mechanical double-linkage interlocking marine valve

Abstract

The invention relates to the technical field of valves, in particular to a mechanical double-linkage interlocking marine valve which comprises two ship ball valves, a transmission assembly, a control assembly and a reinforced sealing assembly, packing grooves are formed in the upper ends of the two ship ball valves, and mounting supports are vertically mounted at the upper ends of the packing grooves of the ship ball valves through threads; a transmission winding disc is arranged on a mounting support of a ship ball valve through a mounting assembly, then the two transmission winding discs are synchronously and rotationally connected through a linkage interlocking rope and a connecting ring, and when the span between the two ship ball valves is large, and the ship ball valves are mounted in a diagonal staggered mode on a pipeline, stable connection can still be kept; under the matching action of the control assembly, valve rods of the two ship ball valves can be synchronously controlled through a hand-cranking rotating disc and a manual control shaft of the ship ball valves, manual association and interlocking of the two ship ball valves are carried out when the ship ball valves cannot be electronically controlled, operation is easy, and the pipeline closing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a mechanical double-linkage interlocking marine valve. Background Art

[0002] Marine valves are valve devices used in ship pipelines. There are many types and sizes of marine valves. Common marine ball valves are controlled by electric, hydraulic and pneumatic switches through PLC control systems for ease of use. The prior art patent CN111442127A discloses a novel mechanical double-linkage interlocking marine valve, comprising a first valve body, a second valve body, a first valve core control rod, a second valve core control rod, a linkage rod, a transmission device, and a first valve body driving device. By arranging a linkage rod and a transmission device between the two valves, and connecting and controlling the two valves through the linkage rod and the transmission device, the interlocking and synchronous operation of the two valves can be conveniently realized. When in use, this scheme mainly performs rotational transmission of the valve stem and the valve core through the cooperation of a worm and a turbine. When the two valves have a long span and are installed diagonally in a non-straight pipeline, the transmission structure has poor stability in use and is not convenient for adjustment and use. Summary of the invention

[0003] The object of the present invention is to provide a mechanical double-linkage interlocking marine valve to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a mechanical double-linkage interlocking marine valve, the mechanical double-linkage interlocking marine valve comprising: Two ship ball valves, each of which has a packing groove at its upper end, a mounting support vertically installed at the upper end of the packing groove of the ship ball valve through a thread, a valve drive box installed at the upper end of the mounting support through a bolt, a manual control shaft horizontally plugged into one side of the valve drive box, and a hand-cranked turntable at one side of the manual control shaft; A transmission assembly, the transmission assembly includes a linkage interlocking rope and two transmission reels, the two transmission reels are respectively movably sleeved with two mounting supports through a mounting assembly, and the mounting assembly includes a plurality of threaded mounting rods; A control assembly, which is arranged on one side of the valve drive box, and includes a first driven bevel gear, a second driven bevel gear, a coupling bevel gear and a bevel gear ring, the bevel gear ring is arranged on the upper end of the transmission reel, and the manual control shaft is transmission-connected to the bevel gear ring; The reinforced sealing component is arranged on one side of the transmission winding disk sleeve mounting support, and the reinforced sealing component includes a first expansion sealing ring and a second expansion sealing ring.

[0005] Preferably, a valve stem is vertically inserted in the center of the stuffing groove of the ship ball valve, the upper end of the valve stem is plugged into the lower end of the valve drive box, a valve cover is inserted in the stuffing groove, the valve cover is sleeved on the valve stem, and a valve packing is fixed at the upper end of the stuffing groove by pressing the valve cover down with a bolt, and the valve packing is sleeved on the valve stem.

[0006] Preferably, the mounting support includes an annular bracket and two mounting plates, the annular bracket is vertically arranged between the two mounting plates, the two mounting plates are fixedly connected to the valve drive box and the ship ball valve by bolts respectively, a matching groove is opened at the center of the lower end of the lower mounting plate, and the valve packing passes through the matching groove and is located between the two mounting plates.

[0007] Preferably, an annular sliding groove is opened at the center of the outer peripheral side of the annular bracket, and a plurality of sinking grooves are opened symmetrically in the center of the winding area of ​​the transmission winding disk. A first threaded groove is opened on one side of the plurality of sinking grooves and passes through the transmission winding disk. One side of the threaded mounting rod passes through the first threaded groove of the transmission winding disk through horizontal movement of the thread, and the side of the threaded mounting rod placed in the sinking groove is flush with the side wall of the winding area of ​​the transmission winding disk.

[0008] Preferably, the threaded mounting rod passes through one side of the transmission winding disk and is located between the two mounting plates of the mounting support. A rotating support rod is horizontally provided at the center of one side of the transmission winding disk through the threaded mounting rod. A sliding ball is movably sleeved on one side of the rotating support rod, and the sliding ball is movably inserted into one side of the annular slide groove of the annular bracket.

[0009] Preferably, a second thread groove is opened on one side of the winding area of ​​the transmission winding drum, and a connecting ring is horizontally inserted in the second thread groove, and both sides of the interlocking rope are respectively wound around the winding area of ​​the transmission winding drum and fixedly bolted to the two connecting rings.

[0010] Preferably, an emergency drive bevel gear is sleeved on one side of the manual control shaft, and a control bracket is provided on the side of the valve drive box close to the emergency drive bevel gear. One side of the control bracket is vertically plugged with a synchronous rotation through a bearing, and the first driven bevel gear and the second driven bevel gear are respectively sleeved on the upper and lower ends of the synchronous rotation, and one side of the emergency drive bevel gear is meshed and connected with one side of the first driven bevel gear.

[0011] Preferably, the control bracket is in an L-shaped structure, and the synchronous rotation is vertically arranged on the horizontal side of the control bracket. The vertical side of the synchronous rotation is horizontally provided with a threaded cylinder, and an adjusting stud is inserted in the threaded cylinder through a thread horizontally penetrating the control bracket. The adjusting stud penetrates one side of the control bracket and is rotatably sleeved with a coupling bevel gear through a bearing, and the two sides of the coupling bevel gear are respectively meshed and connected with the second driven bevel gear and one side of the bevel gear ring.

[0012] Preferably, an annular groove is opened on one side of the transmission winding disk sleeve mounting plate, and the first expansion sealing ring and the second expansion sealing ring are respectively inserted into the two annular grooves, and when the first expansion sealing ring and the second expansion sealing ring expand, the inner circumference of the first expansion sealing ring and the second expansion sealing ring respectively fits the outer circumference of the two mounting plates.

[0013] Preferably, a plurality of connecting pipes are vertically connected between the first expansion sealing ring and the second expansion sealing ring, the plurality of connecting pipes are staggered with the plurality of threaded mounting rods, an inflation joint is provided on one side of the lower end of the transmission winding disk, the second expansion sealing ring is connected to the inflation joint, and a one-way valve is provided in the inflation joint.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A transmission reel is arranged on the mounting support of the ship ball valve through the mounting assembly, and then the two transmission reels are synchronously rotated and connected through the interlocking rope and the connecting ring. When the span between the two ship ball valves is far and they are installed diagonally in the pipeline, they can still maintain a stable connection. Then, with the cooperation of the control assembly, the valve stems of the two ship ball valves can be synchronously controlled through the hand-cranked turntable and manual control shaft of the ship ball valve. When the ship ball valve cannot be electronically controlled, the two ship ball valves are manually interlocked. The operation is simple and the pipeline closing efficiency is improved. In addition, a reinforced sealing assembly is provided at the rotating connection position of the transmission reel and the mounting support, and multi-level reinforced sealing protection is performed on the connection position of the valve stem and the valve packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of part A; Figure 3 This is a schematic diagram of the structure of a ship ball valve of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of part B; Figure 5 This is a cross-sectional view of the transmission reel installation structure of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the C part; Figure 7 For the present invention Figure 6 Schematic diagram of the D part; Figure 8 For the present invention Figure 6 Schematic diagram of part E; Fig. 9 This is a schematic diagram of the connection between the mounting support of the present invention and the ship ball valve; Fig.10 This is a schematic diagram of the connection structure between the valve drive box and the transmission reel of the present invention; Fig.11 This is a schematic diagram of the transmission reel structure of the present invention; Fig.12 For the present invention Fig.11 Schematic diagram of the F part; Fig.13 It is an exploded schematic diagram of the connection between the transmission winding drum 7 and the mounting support 2 of the present invention.

[0016] In the figure: ship ball valve 1, mounting support 2, valve drive box 3, manual control shaft 4, hand-cranked turntable 5, interlocking rope 6, transmission reel 7, valve stem 8, valve packing 9, valve cover 10, annular bracket 11, annular slide groove 12, sinking groove 13, threaded mounting rod 14, sliding ball 15, connecting ring 16, control bracket 18, synchronous rotation 19, first driven bevel gear 20, second driven bevel gear 21, emergency drive bevel gear 22, threaded cylinder 23, adjusting stud 24, engaging bevel gear 25, bevel gear ring 26, first expansion sealing ring 27, second expansion sealing ring 28, connecting pipe 29, inflation joint 30, mounting plate 31. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Please see attached Figure 1 -Attached Fig.13 , this application provides the following technical solutions.

[0019] Embodiment 1: A mechanical double-linkage interlocking marine valve comprises two marine ball valves 1, both of which are provided with packing grooves at the upper ends of the two marine ball valves 1, the upper ends of the packing grooves of the marine ball valves 1 are provided with mounting brackets 2 vertically installed by threads, the upper ends of the mounting brackets 2 are provided with valve drive boxes 3 installed by bolts, one side of the valve drive box 3 is provided with manual control shafts 4 horizontally plugged, one side of the manual control shaft 4 is provided with hand-cranked turntables 5, the mounting brackets 2 comprise an annular bracket 11 and two mounting plates 31, the annular bracket 11 is vertically arranged between the two mounting plates 31, the two mounting plates 31 are respectively fixedly connected to the valve drive box 3 and the marine ball valve 1 by bolts, a matching groove is provided at the lower end center of the lower mounting plate 31, and the valve packing 9 passes through the matching groove and is located between the two mounting plates 31, and the position of the valve packing 9 is covered by the mounting bracket 2 and the transmission reel 7; The lower side of the mounting plate 31 above the mounting support 2 can be in contact with the upper side of the fixing bolts of the valve packing 9 to avoid the problem of poor sealing caused by loose threads of the valve packing 9; A transmission assembly is provided to control two adjacent valves in linkage, the transmission assembly includes a linkage interlocking rope 6 and two transmission winding drums 7, the two transmission winding drums 7 are respectively connected to two mounting supports 2 through a mounting assembly, the mounting assembly includes a plurality of threaded mounting rods 14, an annular slide groove 12 is provided at the center of the outer peripheral side of the annular bracket 11, a plurality of sinking grooves 13 are symmetrically provided at the center of the winding area of ​​the transmission winding drum 7, one side of the plurality of sinking grooves 13 penetrates through the transmission winding drum 7 to provide a first thread groove, one side of the threaded mounting rod 14 penetrates through the first thread groove of the transmission winding drum 7 through a horizontal movement of a thread, and the one side of the threaded mounting rod 14 placed in the sinking groove 13 is flush with the side wall of the winding area of ​​the transmission winding drum 7, so that the contact position is kept flat when the linkage interlocking rope 6 is wound around the transmission winding drum 7; A threaded mounting rod 14 passes through one side of the transmission winding drum 7 and is located between the two mounting plates 31 of the mounting support 2. The threaded mounting rod 14 passes through one side of the transmission winding drum 7 and a rotating support rod is horizontally provided at the center. A sliding ball 15 is movably sleeved on one side of the rotating support rod, and the sliding ball 15 is movably inserted into one side of the annular slide groove 12 of the annular bracket 11. A second threaded groove is opened on one side of the winding area of ​​the transmission winding drum 7, and a connecting ring 16 is horizontally inserted in the second threaded groove. The two sides of the interlocking rope 6 are respectively wound around the winding area of ​​the transmission winding drum 7 and fixedly bolted with the two connecting rings 16. The two transmission winding drums 7 are connected in transmission through the connecting ring 16. The interlocking rope 6 is a lightweight, high-strength, tensile-resistant nylon rope. In the natural state, the interlocking rope 6 is in a taut state.

[0020] When the transmission reel 7 that is not wound with the interlocking rope 6 rotates, the transmission reel 7 pulls the taut interlocking rope 6 from the wound transmission reel 7 through the connecting ring 16. At this time, the two transmission reel 7 rotate synchronously. The rotation support of the transmission reel 7 is supported by a plurality of threaded mounting rods 14 and sliding balls 15. The horizontal sliding of the plurality of sliding balls 15 in the annular slide groove 12 can not only install and position the transmission reel 7, but also reduce the friction loss between the threaded mounting rod 14 and the annular slide groove 12. In addition, the detachable threaded mounting rod 14 is convenient for the maintenance and assembly of the transmission reel 7. When the two ship ball valves 1 are arranged diagonally and are not in the same straight pipeline, the transmission reel 7 of the two ship ball valves 1 can also be rotated to make the two second thread grooves correspond to each other, and then the interlocking rope 6 is connected to the two transmission reel 7 through two connecting rings 16, and the transmission reel 7 on one side is rotated to reel and tighten the interlocking rope 6, and then the interlocking rope can be waited for use.

[0021] Embodiment 2: On the basis of embodiment 1, a control component is provided to control the rotation of the transmission winding disk 7. The control component is provided on one side of the valve drive box 3. The control component includes a first driven bevel gear 20, a second driven bevel gear 21, a coupling bevel gear 25 and a bevel gear ring 26. The bevel gear ring 26 is provided on the upper end of the transmission winding disk 7, and the manual control shaft 4 is connected to the bevel gear ring 26 in transmission. An emergency driving bevel gear 22 is sleeved on one side of the manual control shaft 4. A control bracket 18 is provided on one side of the valve drive box 3 close to the emergency driving bevel gear 22. A synchronous rotation 19 is vertically inserted on one side of the control bracket 18 through a bearing. The first driven bevel gear 20 and the second driven bevel gear 21 are sleeved on the upper and lower ends of the synchronous rotation 19 respectively. One side of the emergency drive bevel gear 22 is meshed and connected with one side of the first driven bevel gear 20, the control bracket 18 is an L-shaped structure, the synchronous rotation 19 is vertically arranged on the horizontal side of the control bracket 18, and the vertical side of the synchronous rotation 19 is horizontally provided with a threaded cylinder 23, and an adjusting stud 24 is inserted in the threaded cylinder 23 through the control bracket 18 horizontally through the thread. The adjusting stud 24 penetrates one side of the control bracket 18 and is rotatably sleeved with a coupling bevel gear 25 through a bearing, and the two sides of the coupling bevel gear 25 are respectively meshed and connected with one side of the second driven bevel gear 21 and the bevel gear ring 26, the diameter of the transmission winding disk 7 is larger than the diameter of the coupling bevel gear 25, and the diameter of the emergency drive bevel gear 22 is smaller than the diameter of the first driven bevel gear 20.

[0022] In this embodiment, when the marine valve control system cannot drive the valve stem 8 to rotate by electric or other driving methods, the staff manually rotates the valve stem 8 normally by turning the hand-cranked turntable 5 and the manual control shaft 4. At this time, the rotation of the manual control shaft 4 drives the emergency drive bevel gear 22 to control the first driven bevel gear 20 and the second driven bevel gear 21 to rotate. The second driven bevel gear 21 controls the bevel gear ring 26 and the transmission winding drum 7 to rotate through the threaded cylinder 23, thereby realizing the winding of the interlocking rope 6 by the transmission winding drum 7. When the transmission winding drum 7 winds up the interlocking rope 6, the transmission winding drum 1 of the ship on the other side is The reel 7 rotates, thereby rotating the manual control shaft 4 through the bevel gear ring 26, so that the valve stem 8 of the other ship ball valve 1 rotates, and the valve self-locking is realized. When the transmission reel 7 is rotated and controlled, the rotation direction of the reeling and unreeling of the two transmission reel 7 is adjusted to ensure that the rotation directions of the valve stems 8 of the two ship ball valves 1 are consistent, and the ship ball valves 1 can be self-locked and closed at the same time. In addition, when there is no need to synchronously control the two ship ball valves 1, the engaging bevel gear 25 can be moved away from the second driven bevel gear 21 and the bevel gear ring 26 by rotating the adjusting stud 24. At this time, when the manual control shaft 4 rotates, it will not drive the transmission reel 7 to rotate.

[0023] Embodiment 3: On the basis of embodiment 2, a reinforced sealing component is provided to further seal and protect the connection position of the valve stem 8 and the valve cover 10. The reinforced sealing component is provided on one side of the transmission winding disk 7 sleeved with the mounting support 2, and the reinforced sealing component includes a first expansion sealing ring 27 and a second expansion sealing ring 28. A valve stem 8 is vertically inserted in the center of the packing groove of the ship ball valve 1. The upper end of the valve stem 8 is inserted with the lower end of the valve drive box 3. A valve cover 10 is inserted in the packing groove. The valve cover 10 sleeves the valve stem 8. The upper end of the packing groove is fixed with a valve cover 10 by pressing down the valve cover 10 through a bolt. The gate packing 9, and the valve packing 9 is sleeved with the valve stem 8, and the transmission winding disk 7 is sleeved with the mounting plate 31. An annular groove is opened on one side, and the first expansion sealing ring 27 and the second expansion sealing ring 28 are respectively inserted into the two annular grooves, and when the first expansion sealing ring 27 and the second expansion sealing ring 28 expand, the inner circumference of the first expansion sealing ring 27 and the second expansion sealing ring 28 are respectively attached to the outer circumference of the two mounting plates 31, and the two mounting plates 31 cover the position of the valve packing 9, and a sealing gasket can be set at the connection position between the mounting support 2 and the valve drive box 3 and the ship ball valve 1; A plurality of connecting pipes 29 are vertically connected between the first expansion sealing ring 27 and the second expansion sealing ring 28. The connecting pipes 29 are staggered with the threaded mounting rods 14. An inflation joint 30 is provided on one side of the lower end of the transmission winding drum 7. The second expansion sealing ring 28 is connected to the inflation joint 30, and a one-way valve is provided in the inflation joint 30. When the inflation joint 30 is connected to high-pressure air, the high-pressure gas is filled into the first expansion sealing ring 27 and the second expansion sealing ring 28 through the second expansion sealing ring 28 and the connecting pipe 29. At this time, the first expansion sealing ring 27 and the second expansion sealing ring 28 expand and elastically abut against the outer peripheral surface of the mounting plate 31, so as to ensure the sealing without affecting the rotation of the transmission winding drum 7.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical double linkage interlocking marine valve, characterized in that: The mechanical double linkage interlocking marine valve comprises: Two ship ball valves (1), each of the two ship ball valves (1) having a packing groove at its upper end, a mounting support (2) being vertically mounted on the upper end of the packing groove of the ship ball valve (1) via a thread, a valve drive box (3) being mounted on the upper end of the mounting support (2) via a bolt, a manual control shaft (4) being horizontally plugged into one side of the valve drive box (3), and a hand-cranked turntable (5) being provided on one side of the manual control shaft (4); A transmission assembly, the transmission assembly comprising a linked interlocking rope (6) and two transmission reels (7), the two transmission reels (7) being respectively movably connected to two mounting supports (2) via a mounting assembly, the mounting assembly comprising a plurality of threaded mounting rods (14); A control assembly, the control assembly being arranged on one side of the valve drive box (3), the control assembly comprising a first driven bevel gear (20), a second driven bevel gear (21), a coupling bevel gear (25) and a bevel gear ring (26), the bevel gear ring (26) being arranged on the upper end of the transmission reel (7), and the manual control shaft (4) being transmission-connected to the bevel gear ring (26); A reinforced sealing component is provided on one side of the transmission winding disk (7) sleeved with the mounting support (2), and the reinforced sealing component comprises a first expansion sealing ring (27) and a second expansion sealing ring (28).

2. A mechanical double linkage interlocking marine valve according to claim 1, characterized in that: A valve stem (8) is vertically inserted in the center of the packing groove of the ship ball valve (1), the upper end of the valve stem (8) is plugged into the lower end of the valve drive box (3), a valve cover (10) is inserted in the packing groove, the valve cover (10) is sleeved on the valve stem (8), a valve packing (9) is fixed at the upper end of the packing groove by pressing the valve cover (10) down with a bolt, and the valve packing (9) is sleeved on the valve stem (8).

3. A mechanical double linkage interlocking marine valve according to claim 2, characterized in that: The mounting support (2) comprises an annular support (11) and two mounting plates (31), the annular support (11) being vertically arranged between the two mounting plates (31), the two mounting plates (31) being fixedly connected to the valve drive box (3) and the ship ball valve (1) respectively by bolts, a matching groove being provided at the center of the lower end of the lower mounting plate (31), and the valve packing (9) passing through the matching groove and being located between the two mounting plates (31).

4. A mechanical double-linkage interlocking marine valve according to claim 3, characterized in that: An annular sliding groove (12) is provided at the center of the outer peripheral side of the annular bracket (11), and a plurality of sinking grooves (13) are symmetrically provided at the center of the winding area of ​​the transmission winding disk (7). One side of the plurality of sinking grooves (13) penetrates through the transmission winding disk (7) and is provided with a first thread groove, and one side of the threaded mounting rod (14) penetrates through the first thread groove of the transmission winding disk (7) through horizontal movement of the thread, and the side of the threaded mounting rod (14) placed in the sinking groove (13) is flush with the side wall of the winding area of ​​the transmission winding disk (7).

5. A mechanical double-linkage interlocking marine valve according to claim 4, characterized in that: The threaded mounting rod (14) passes through one side of the transmission winding disk (7) and is located between two mounting plates (31) of the mounting support (2). A rotating support rod is horizontally arranged at the center of one side of the transmission winding disk (7) where the threaded mounting rod (14) passes through. A sliding ball (15) is movably sleeved on one side of the rotating support rod, and the sliding ball (15) is movably inserted into one side of the annular sliding groove (12) of the annular bracket (11).

6. A mechanical double-linkage interlocking marine valve according to claim 5, characterized in that: A second thread groove is provided on one side of the winding area of ​​the transmission winding drum (7), and a connecting ring (16) is horizontally inserted in the second thread groove, and two sides of the interlocking rope (6) are respectively wound around the winding area of ​​the transmission winding drum (7) and fixedly bolted to the two connecting rings (16).

7. A mechanical double-linkage interlocking marine valve according to claim 6, characterized in that: An emergency drive bevel gear (22) is sleeved on one side of the manual control shaft (4); a control bracket (18) is provided on a side of the valve drive box (3) close to the emergency drive bevel gear (22); a synchronous rotation (19) is vertically inserted on one side of the control bracket (18) via a bearing; a first driven bevel gear (20) and a second driven bevel gear (21) are sleeved on upper and lower ends of the synchronous rotation (19), respectively; and one side of the emergency drive bevel gear (22) is meshedly connected to one side of the first driven bevel gear (20).

8. A mechanical double linkage interlocking marine valve according to claim 7, characterized in that: The control bracket (18) is in an L-shaped structure. The synchronous rotation (19) is vertically arranged on the horizontal side of the control bracket (18). A threaded barrel (23) is horizontally arranged on the vertical side of the synchronous rotation (19). An adjusting stud (24) is inserted and inserted in the threaded barrel (23) through a thread that horizontally penetrates the control bracket (18). The adjusting stud (24) penetrates one side of the control bracket (18) and is rotatably sleeved with an engaging bevel gear (25) through a bearing. The two sides of the engaging bevel gear (25) are respectively meshed and connected with one side of the second driven bevel gear (21) and the bevel gear ring (26).

9. A mechanical double linkage interlocking marine valve according to claim 8, characterized in that: An annular groove is provided on one side of the transmission winding disk (7) sleeved with the mounting plate (31), and the first expansion sealing ring (27) and the second expansion sealing ring (28) are respectively inserted into the two annular grooves. When the first expansion sealing ring (27) and the second expansion sealing ring (28) expand, the inner circumferences of the first expansion sealing ring (27) and the second expansion sealing ring (28) respectively fit the outer circumferences of the two mounting plates (31).

10. A mechanical double linkage interlocking marine valve according to claim 9, characterized in that: A plurality of connecting pipes (29) are vertically connected between the first expansion sealing ring (27) and the second expansion sealing ring (28); the plurality of connecting pipes (29) and the plurality of threaded mounting rods (14) are staggered; an inflation joint (30) is provided on one side of the lower end of the transmission winding reel (7); the second expansion sealing ring (28) is connected to the inflation joint (30), and a one-way valve is provided in the inflation joint (30).

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