Marine valve capable of conveniently locking hand wheel

Abstract

The utility model is applicable to the technical field of valves, and provides a marine valve convenient for locking a hand wheel, the top of a valve main body is fixedly connected with a shell, the top of the valve main body is rotatably connected with a rotating shaft, the rotating shaft is slidably connected with a connecting cylinder, the top end of the connecting cylinder is fixedly connected with the hand wheel, and the bottom of the connecting cylinder is fixedly connected with a clamping plate; a locking block is arranged on the inner side of the shell, one side of the locking block is fixedly connected with a pull rod, and a reset spring is arranged on the surface of the pull rod. The locking block is arranged to fix the clamping plate fixed to the bottom of the connecting cylinder, so that the hand wheel is locked, the hand wheel is prevented from moving due to the influence of external force, and unnecessary potential safety hazards are avoided; in addition, by designing a pressing rod and a rotating rod, a user can drive the rotating rod to move only by rotating the pressing rod, then the locking block is driven to move, locking of the clamping plate is relieved, the principle is simple, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a marine valve which is convenient for locking a hand wheel. Background Art

[0002] Marine valves are specially designed to meet the environmental conditions of ships and are used to control the pressure, flow and flow direction of fluids in ship pipelines. Their basic functions include connecting or disconnecting the flow of pipeline media, changing the flow direction of the medium, regulating the pressure and flow of the medium, and protecting the normal operation of pipeline equipment.

[0003] The patent specification with announcement number CN220452895U discloses a locking device for a valve handwheel, including a handwheel part, a mounting part and a locking part, wherein the mounting part is connected to the bottom of the handwheel, and the mounting part includes an anti-twist mounting rod fixedly connected to the bottom of the handwheel, a fixing ring spaced apart from the bottom end of the anti-twist mounting rod, a mounting plate fixedly connected to the bottom of the fixing ring, and a fixing plate fixedly connected to one side of the anti-twist mounting rod, the locking part is connected to the fixing plate, the anti-twist mounting rod, and the fixing ring, and the locking part is used to connect the anti-twist mounting rod and the fixing ring together. The utility model can lock the handwheel position at any position required by the valve system, ensure the safe and stable operation of the valve system, and avoid safety accidents caused by misoperation.

[0004] However, in the implementation of relevant technologies, it was found that the locking device of the valve handwheel mentioned above has the following problems: the device realizes the function of locking the valve handwheel rotated to any position through design and coordination, but the above utility model lacks an alarm device. Although the device avoids safety accidents caused by personnel misoperation to a certain extent, when outsiders perform incorrect operations on the handwheel without knowing it, relevant staff cannot be informed and stop it in the first time, which indirectly increases the possibility of safety hazards. In view of this, a marine valve that is easy to lock the handwheel is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a marine valve which is convenient for locking a hand wheel, aiming to solve the problem of potential safety hazards caused by misoperation of the valve.

[0006] The utility model is implemented as follows: a marine valve that is convenient for locking a hand wheel comprises: a valve body; a shell arranged at the top of the valve body; and a rotating shaft arranged on the inner side of the shell, the top of the rotating shaft is provided with a connecting tube; and a clamping plate arranged at the bottom of the connecting tube; a first limit block arranged at the top of the rotating shaft; a hand wheel arranged at the top of the connecting tube; a locking block arranged on the inner side of the shell, a pull rod is provided on one side of the locking block; and a return spring is provided on the outside of the pull rod; a pressure rod arranged at the bottom end of the front side of the shell, the top of the outside of the pressure rod is provided with a return spring; and a shift block arranged at the top of the pressure rod; a connecting rod arranged on one side of the locking block; a rotating rod arranged on one side of the connecting rod and connecting the connecting rod and the shift block, an alarm device arranged on one side of the rebound block and located above the first extrusion block; an alarm switch arranged on one side of the alarm device, and a second extrusion block is provided on one side of the alarm switch.

[0007] Preferably, the shift block also includes: a first extrusion block arranged at the top of the shift block; a fixed shell located at the top inner side of the shell, a rebound block is arranged on one side of the fixed shell; and a return spring is arranged on the other side of the rebound block; and a connecting column arranged on one side of the second extrusion block; a slot arranged on one side of the alarm device; a slider arranged on the top of the alarm device; a second limit block arranged at the top of the connecting column, a return spring is arranged on the top of the second limit block; and a cross groove arranged on the inner side of the connecting column; a semicircular block arranged on the other side of the top of the connecting column; a rotating block arranged on the inner side of the connecting column and having a cross groove in cross section, so as to facilitate timely alarm to remind relevant staff when non-staff operate the valve handwheel, so as to avoid the occurrence of safety accidents.

[0008] Preferably, the top of the valve body is fixedly connected to the shell, the top of the valve body is rotatably connected to the rotating shaft, the rotating shaft is slidably connected to a connecting cylinder, the top of the connecting cylinder is fixedly connected to a hand wheel, the bottom of the connecting cylinder is fixedly connected to a card plate, the inner side of the shell is provided with a locking block, one side of the locking block is fixedly connected to a pull rod, the surface of the pull rod is provided with a return spring, one end of the return spring is fixedly connected to one side of the pull rod, the other end of the return spring is fixedly connected to one side of the shell inner side, the front side of the locking block is fixedly connected to a connecting rod, the connecting rod is rotatably connected to a rotating rod, the bottom end of the shell is slidably connected to a pressure rod, the top of the pressure rod is fixedly connected to a shift block, the top of the surface of the pressure rod is provided with a return spring, one end of the return spring is fixedly connected to the bottom end of the shift block, the other end of the return spring is fixedly connected to the bottom end of the inner side of the shell, and both sides of the shift block are rotatably connected to the rotating rod, so as to drive the rotating rod to move by squeezing the pressure rod, thereby moving the position of the locking block and releasing the lock of the card plate.

[0009] Preferably, the top of the dial block is fixedly connected with a first extrusion block, the top of the inner side of the shell is fixedly connected with a fixed shell, one side of the fixed shell is slidably connected with a rebound block, the inner side of the fixed shell is provided with a return spring, one end of the return spring is fixedly connected to one side of the rebound block, the other side of the return spring is fixedly connected to one side of the inner side of the fixed shell, and an alarm device is provided on the other side of the rebound block, the top of the alarm device is fixedly connected with a slider, the slider is slidably connected to the top of the inner side of the shell, one side of the alarm device is provided with an alarm switch, one side of the alarm switch is provided with a connecting column, one side of the top of the connecting column is fixedly connected with a second extrusion block, the other side of the connecting column is fixedly connected with a semicircular block, a cross groove is provided on the inner side of the connecting column, a rotating block is slidably connected to the cross groove, and the bottom of the connecting column is rotatably connected to the bottom of the shell, so that when non-staff releases the lock of the card board, by moving the first extrusion block and squeezing the inclined surface on one side of the alarm device, the alarm device is driven to move and trigger the alarm, prompting relevant staff that there is a problem there.

[0010] Preferably, a groove is provided on the inner side of the connecting tube, and a first limit block is fixedly connected to the top end of the rotating shaft. The first limit block is slidably connected to the groove, so that the rotating shaft can be fixed by the first limit block to prevent the rotating shaft from falling off the connecting tube.

[0011] Preferably, one side of the alarm device is an inclined surface, and a first extrusion block is arranged directly below the inclined surface of the alarm device. A card slot is opened at the bottom of one side of the alarm device, and the cross-section of the card slot is consistent with the cross-section of the first extrusion block. When the staff rotates the connecting column to make the semicircular block squeeze the alarm device so that it squeezes the rebound block, and the staff presses the pressure rod to release the lock of the card plate, the first extrusion block can extend into the card slot on one side of the alarm device, thereby releasing the lock of the card plate.

[0012] Preferably, the top end of the connecting column is slidably connected to a second limit block, the top end of the second limit block is fixedly connected to a return spring, and the other end of the return spring is fixedly connected to the top end of the inner side of the shell, so as to facilitate limiting the connecting column by the second limit block to prevent the connecting column from shifting in position under the action of external force.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The marine valve designed by the utility model is convenient for locking the hand wheel. A locking block is arranged to fix a clamping plate fixed to the bottom of the connecting tube, thereby locking the hand wheel to prevent the hand wheel from moving due to external force and causing unnecessary safety hazards. In addition, a pressure rod and a rotating rod are designed so that the user only needs to rotate the pressure rod to drive the rotating rod to move, thereby driving the locking block to move, thereby releasing the lock of the clamping plate. The utility model has a simple principle and is easy to operate.

[0015] The utility model is a marine valve designed for locking a hand wheel. An alarm device is arranged above the dial block so that an alarm is triggered when non-staff members operate the valve, prompting relevant staff to stop the operation in time. A connecting column is designed so that staff members can remove the alarm by operating the connecting column with a rotating block when operating the valve, thereby avoiding unnecessary misunderstandings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the housing of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the locking block of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connecting tube of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the slider of the utility model;

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the alarm device of the utility model.

[0022] In the figure: 1. valve body; 2. hand wheel; 3. clamping plate; 4. connecting tube; 5. outer shell; 6. pressure rod; 7. return spring; 8. shift block; 9. rotating rod; 10. first extrusion block; 11. locking block; 12. connecting rod; 13. rotating shaft; 14. pull rod; 15. first limit block; 16. clamping groove; 17. rebound block; 18. fixed shell; 19. slider; 20. alarm switch; 21. second extrusion block; 22. semicircular block; 23. connecting column; 24. rotating block; 25. cross groove; 26. alarm device; 27. second limit block. DETAILED DESCRIPTION

[0023] The utility model embodiment provides a marine valve which is convenient for locking a hand wheel, such as Figure 1-Figure 6As shown, it includes: a valve body 1; a shell 5 arranged at the top of the valve body 1; and a rotating shaft 13 arranged on the inner side of the shell 5, and a connecting tube 4 is provided on the top of the rotating shaft 13; and a clamping plate 3 arranged at the bottom of the connecting tube 4: a first limit block 15 arranged at the top of the rotating shaft 13; a hand wheel 2 arranged at the top of the connecting tube 4; a locking block 11 arranged on the inner side of the shell 5, and a pull rod 14 is provided on one side of the locking block 11; and a return spring 7 arranged on the outside of the pull rod 14; a pressure rod 6 arranged at the bottom end of the front side of the shell 5, and a return spring 7 is provided on the top of the outer side of the pressure rod 6; and a shifting block 8 arranged at the top of the pressure rod 6; a connecting rod 12 arranged on one side of the locking block 11; a rotating rod 9 arranged on one side of the connecting rod 12 and connecting the connecting rod 12 and the shifting block 8, an alarm device 26 arranged on one side of the rebound block 17 and located above the first extrusion block 10; an alarm switch 20 arranged on one side of the alarm device 26, and a second extrusion block 21 is provided on one side of the alarm switch 20.

[0024] It should be noted that, in this embodiment, a housing 5 is welded to the top of the valve body 1, the top of the valve body 1 rotates with the rotating shaft 13, the rotating shaft 13 slides with the connecting tube 4, the top of the connecting tube 4 is welded with a hand wheel 2, the bottom of the connecting tube 4 is welded with a clamping plate 3, a locking block 11 is provided on the inner side of the housing 5, a pull rod 14 is welded to one side of the locking block 11, a return spring 7 is provided on the surface of the pull rod 14, one end of the return spring 7 is welded to one side of the pull rod 14, and the other end of the return spring 7 is welded to one side of the inner side of the housing 5. A connecting rod 12 is welded to the front side of the locking block 11, and the connecting rod 12 rotates with the rotating rod 9. The bottom end of the shell 5 slides with the pressure rod 6. A shift block 8 is welded to the top of the pressure rod 6. A return spring 7 is provided on the top of the surface of the pressure rod 6. One end of the return spring 7 is welded to the bottom end of the shift block 8, and the other end of the return spring 7 is welded to the bottom end of the inner side of the shell 5. The two sides of the shift block 8 rotate with the rotating rod 9, so that the rotating rod 9 can be driven to move by squeezing the pressure rod 6, thereby moving the position of the locking block 11 and releasing the lock of the card plate 3.

[0025] Specifically, in this embodiment, a groove is opened on the inner side of the connecting tube 4, and a first limit block 15 is fixedly connected to the top of the rotating shaft 13. The first limit block 15 is slidably connected to the groove, so that the rotating shaft 13 can be fixed by the first limit block 15 to prevent the rotating shaft 13 from falling off from the connecting tube 4.

[0026] When the hand wheel 2 is implemented, the hand wheel 2 is pressed down, and the connecting tube 4 fixedly connected to the bottom end of the hand wheel 2 moves downward along the rotating shaft 13, so that the card plate 3 fixed at the bottom of the connecting tube 4 moves downward to the inner side of the shell 5 set at the top end of the valve body 1. When the card plate 3 moves down, the bottom end of the card plate 3 first contacts the inclined surface of the card tooth on one side of the top of the locking block 11, and the locking block 11 is continuously pressed downward to make the locking block 11 move to both sides, and drive the pull rod 14 to move to both sides. When moving, the reset spring 7 is pulled. When the card plate 3 falls completely, the locking block 11 moves to the center of the shell 5 under the rebound action of the reset spring 7, and locks the card plate 3. When the hand wheel 2 needs to be operated, the card plate 3 set at the bottom of the front side of the shell 5 is pressed. The pressure rod 6 at the end drives the pressure rod 6 to rise by pressing the pressure rod 6, so that the shift block 8 set at the top of the pressure rod 6 rises, and the return spring 7 fixed at the bottom of the shift block 8 is stretched. When the shift block 8 rises, the rotating rod 9 rotatably connected to the two sides of the shift block 8 is squeezed by the shift block 8, and the other end of the rotating rod 9 will stretch to both sides. While stretching, it will drive the connecting rod 12 rotatably connected to the other end of the rotating rod 9 to move to both sides, thereby making the locking block 11 fixedly connected to the connecting rod 12 move to both sides, thereby releasing the lock of the card plate 3. At this time, the handwheel 2 is pulled to make the first limit block 15 set at the top of the rotating shaft 13 slide along the slide groove opened on the inner side of the connecting tube 4, thereby making the connecting tube 4 move upward, driving the card plate 3 to move to the top of the shell 5.

[0027] In a further preferred embodiment of the utility model, a first extrusion block 10 is arranged on the top of the shift block 8; a fixed shell 18 is located at the top inner side of the outer shell 5, and a rebound block 17 is arranged on one side of the fixed shell 18; and a return spring 7 is arranged on the other side of the rebound block 17; and a connecting column 23 is arranged on one side of the second extrusion block 21; a slot 16 is arranged on one side of the alarm device 26; a slider 19 is arranged on the top of the alarm device; a second limit block 27 is arranged on the top of the connecting column 23, and a return spring 7 is arranged on the top of the second limit block 27; and a cross groove 25 is arranged on the inner side of the connecting column 23; a semicircular block 22 is arranged on the other side of the top of the connecting column 23; a rotating block 24 is arranged on the inner side of the connecting column 23 and has a cross groove 25 The cross section is consistent with the rotating block 24, which is convenient for non-staff to operate the valve handwheel 2. When the valve handwheel 2 is operated, an alarm is promptly issued to remind relevant staff to avoid the occurrence of safety accidents.

[0028] It should be noted that, in the present embodiment, the top of the shift block 8 is welded with the first extrusion block 10, the top of the inner side of the housing 5 is welded with the fixed shell 18, the fixed shell 18 slides with the rebound block 17, the inner side of the fixed shell 18 is provided with a return spring 7, one end of the return spring 7 is welded with one side of the rebound block 17, the other side of the return spring 7 is welded with one side of the inner side of the fixed shell 18, the other side of the rebound block 17 is provided with an alarm device 26, the top of the alarm device 26 is welded with a slider 19, the slider 19 slides with the top of the inner side of the housing 5, and one side of the alarm device 26 is provided with an alarm. Alarm switch 20, a connecting column 23 is provided on one side of the alarm switch 20, a second extrusion block 21 is welded on one side of the top of the connecting column 23, a semicircular block 22 is welded on the other side of the connecting column 23, a cross groove 25 is provided on the inner side of the connecting column 23, the cross groove 25 slides with the rotating block 24, and the bottom of the connecting column 23 rotates with the bottom of the shell 5, so that when non-staff unlocks the card plate 3, by moving the first extrusion block 10 and squeezing the inclined surface on one side of the alarm device 26, the alarm device 26 is driven to move and trigger the alarm, prompting the relevant staff that there is a problem there.

[0029] It should be noted that, in the present embodiment, one side of the alarm device 26 is an inclined surface, and a first extrusion block 10 is arranged directly below the inclined surface of the alarm device 26. A card slot 16 is provided at the bottom of one side of the alarm device 26, and the cross-section of the card slot 16 is consistent with the cross-section of the first extrusion block 10. When the staff rotates the connecting column 23 to make the semicircular block 22 squeeze the alarm device 26 to squeeze the rebound block 17, and the staff presses the pressure rod 6 to release the lock of the card plate 3, the first extrusion block 10 can extend into the card slot 16 on one side of the alarm device 26, thereby releasing the lock of the card plate 3.

[0030] It should be noted that, in the present embodiment, the top end of the connecting column 23 is slidably connected to a second limit block 27, the top end of the second limit block 27 is fixedly connected to a return spring 7, and the other end of the return spring 7 is fixedly connected to the top end of the inner side of the outer shell 5, so as to facilitate limiting the connecting column 23 by the second limit block 27 to prevent the connecting column 23 from shifting in position under the action of external force.

[0031] In specific implementation, when the staff needs to unlock the locking block 11 from locking the hand wheel 2, the rotating block 24 is inserted into the cross groove 25 at the bottom end of the connecting column 23, so that the top end of the rotating block 24 contacts the bottom end of the second limit block 27, and the second limit block 27 is squeezed by the rotating block 24 to make the second limit block 27 rise and release the limit on the connecting column 23. At this time, the rotating block 24 is rotated 90 degrees counterclockwise, and the semicircular block 22 is aligned with the alarm switch 20. When the semicircular block 22 rotates, it will align with the alarm switch 20. The alarm device 26 contacts with the semicircular block 22. When the semicircular block 22 rotates to a suitable position, the alarm device 26 will be squeezed by the semicircular block 22 and move to one side, so that the side with the inclined surface squeezes the rebound block 17, so that the rebound block 17 moves to the inside of the fixed shell 18 and squeezes the return spring 7 arranged on the inside of the fixed shell 18. At this time, the card slot 16 arranged at the bottom end of the alarm device 26 will align with the first squeezing block 10 fixed in front of the top of the shifting block 8. At this time, the pressure rod 6 is squeezed, and the first squeezing block 10 is driven by the movement of the pressure rod 6. The block 10 extends into the card slot 16 set at the bottom end of the alarm device 26, and at the same time releases the lock block 11 from the card plate 3. When the rotating block 24 cannot be used to release the lock, the dial block 8 rises and drives the first extrusion block 10 to rise. The top of the first extrusion block 10 will contact the inclined surface on one side of the alarm device 26, and drive the alarm device 26 through the extrusion inclined surface to make the slider 19 set at the top of the alarm device 26 move to one side along the top of the inner side of the shell 5, so that the alarm switch 20 set on the other side of the alarm device 26 contacts the second extrusion block 21, triggering the switch and causing the alarm. When the alarm is triggered, the alarm cannot be released by pressing the dial block 8. At this time, the rotating block 24 is used to rotate the connecting column 23 counterclockwise by 180 degrees so that the second extrusion block 21 set on the other side is aligned with the alarm switch 20 to squeeze the pressure rod 6, so that the alarm switch 20 contacts the second extrusion block 21 on the other side, and the switch is turned off. When the switch is turned off, the connecting column 23 is restored by rotating 180 degrees clockwise.

[0032] In the present utility model, the alarm device 26, the return spring 7, the valve body 1 and other components are all prior art, and their working principles are consistent with similar products on the market, so they are not described in detail here.

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A marine valve that is convenient for locking a hand wheel, characterized in that: include: Valve body (1); A housing (5) disposed on the top of the valve body (1); and A rotating shaft (13) is arranged inside the housing (5), and a connecting tube (4) is arranged on the top of the rotating shaft (13); and The clamping plate (3) arranged at the bottom of the connecting tube (4): A first limiting block (15) disposed at the top end of the rotating shaft (13); A hand wheel (2) disposed at the top of the connecting tube (4); A locking block (11) is arranged inside the housing (5), and a pull rod (14) is arranged on one side of the locking block (11); and A return spring (7) arranged outside the pull rod (14); A pressure rod (6) is arranged at the bottom end of the front side of the housing (5), and a return spring (7) is arranged at the top of the outer side of the pressure rod (6); and A shifting block (8) disposed at the top end of the pressure rod (6); A connecting rod (12) provided on one side of the locking block (11); A rotating rod (9) disposed on one side of the connecting rod (12) and connecting the connecting rod (12) and the shifting block (8); A fixed shell (18) is located at the top inner side of the outer shell (5), and a rebound block (17) is provided on one side of the fixed shell (18); and a return spring (7) disposed on the other side of the rebound block (17); an alarm device (26) disposed on one side of the rebound block (17) and located above the first extrusion block (10); An alarm switch (20) is arranged on one side of the alarm device (26), and a second extrusion block (21) is arranged on one side of the alarm switch (20).

2. A marine valve for convenient locking of a hand wheel according to claim 1, characterized in that: The shifting block (8) further comprises: A first extrusion block (10) arranged on the top of the shifting block (8); A connecting column (23) provided on one side of the second extrusion block (21); A card slot (16) provided on one side of the alarm device (26); A slider (19) disposed at the top of the alarm device; A second limiting block (27) is arranged at the top of the connecting column (23), and a return spring (7) is arranged at the top of the second limiting block (27); and A cross groove (25) provided on the inner side of the connecting column (23); A semicircular block (22) provided on the other side of the top of the connecting column (23); A rotating block (24) is arranged on the inner side of the connecting column (23) and has a cross section consistent with the cross groove (25).

3. A marine valve for convenient locking of a hand wheel according to claim 2, characterized in that: The top of the valve body (1) is fixedly connected to a housing (5), the top of the valve body (1) is rotatably connected to a rotating shaft (13), the rotating shaft (13) is slidably connected to a connecting tube (4), the top of the connecting tube (4) is fixedly connected to a hand wheel (2), the bottom of the connecting tube (4) is fixedly connected to a clamping plate (3), a locking block (11) is provided on the inner side of the housing (5), one side of the locking block (11) is fixedly connected to a pull rod (14), a return spring (7) is provided on the surface of the pull rod (14), one end of the return spring (7) is fixedly connected to one side of the pull rod (14) and the return spring (7) is fixedly connected to one end of the return spring (7). The other end of the locking block (7) is fixedly connected to one side of the inside of the shell (5); the front side of the locking block (11) is fixedly connected to a connecting rod (12); the connecting rod (12) is rotatably connected to a rotating rod (9); the bottom end of the shell (5) is slidably connected to a pressure rod (6); the top end of the pressure rod (6) is fixedly connected to a shift block (8); a return spring (7) is arranged on the top of the surface of the pressure rod (6); one end of the return spring (7) is fixedly connected to the bottom end of the shift block (8); the other end of the return spring (7) is fixedly connected to the bottom end of the inner side of the shell (5); and both sides of the shift block (8) are rotatably connected to the rotating rod (9).

4. A marine valve for convenient locking of a hand wheel according to claim 2, characterized in that: The top end of the shift block (8) is fixedly connected to a first extrusion block (10), the top end of the inner side of the outer shell (5) is fixedly connected to a fixed shell (18), one side of the fixed shell (18) is slidably connected to a rebound block (17), a return spring (7) is arranged on the inner side of the fixed shell (18), one end of the return spring (7) is fixedly connected to one side of the rebound block (17), the other side of the return spring (7) is fixedly connected to one side of the inner side of the fixed shell (18), an alarm device (26) is arranged on the other side of the rebound block (17), and the top end of the alarm device (26) is fixedly connected to a slider ( 19), the slider (19) is slidably connected to the top of the inner side of the housing (5), an alarm switch (20) is provided on one side of the alarm device (26), a connecting column (23) is provided on one side of the alarm switch (20), a second extrusion block (21) is fixedly connected to one side of the top of the connecting column (23), a semicircular block (22) is fixedly connected to the other side of the connecting column (23), a cross groove (25) is provided on the inner side of the connecting column (23), a rotating block (24) is slidably connected to the cross groove (25), and the bottom of the connecting column (23) is rotatably connected to the bottom of the housing (5).

5. A marine valve for convenient locking of a hand wheel according to claim 1, characterized in that: A groove is provided on the inner side of the connecting tube (4), and a first limiting block (15) is fixedly connected to the top end of the rotating shaft (13), and the first limiting block (15) is slidably connected to the groove.

6. A marine valve for convenient locking of a hand wheel according to claim 2, characterized in that: One side of the alarm device (26) is an inclined surface, a first extrusion block (10) is arranged directly below the inclined surface of the alarm device (26), and a card slot (16) is provided at the bottom of one side of the alarm device (26), and the cross section of the card slot (16) is consistent with the cross section of the first extrusion block (10).

7. A marine valve for convenient locking of a hand wheel according to claim 2, characterized in that: The top end of the connecting column (23) is slidably connected to a second limiting block (27), the top end of the second limiting block (27) is fixedly connected to a return spring (7), and the other end of the return spring (7) is fixedly connected to the top end of the inner side of the housing (5).

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