Valve with anti-misoperation multifunctional grindable speed reduction mechanism

Abstract

The application belongs to the technical field of valves, and discloses a valve with a multifunctional grinding speed reduction mechanism and an anti-misoperation function, which comprises a support, the top end of the support is bolted with a box cover, the bottom end of the support is bolted with a valve body, a bearing is installed in the box cover, one end of a pinion is installed with a hand wheel, the bottom end of a valve rod main body is installed with a valve flap, the bottom end of the valve body is bolted with a valve seat, the bottom end of the valve rod main body is fixed with a quick release mechanism, the outside of the valve rod main body is fixed with a limiting ring, the cooperation of the structures such as the mounting disc, the fixing seat and the positioning lock sleeve enables the device to realize the quick disassembly and replacement of the valve flap, the mounting disc realizes the fixation of the quick release mechanism and the valve rod main body, the fixing seat provides installation support for the positioning lock sleeve, the positioning lock sleeve cooperates with the lock ball assembly to realize the quick locking and unlocking of the valve flap, without the need for professional tools, and finally the effect of improving the replacement efficiency of the valve flap and adapting to the long-term use and maintenance requirements of the valve is achieved.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, specifically a valve with a multifunctional grindable deceleration mechanism to prevent misoperation. Background Technology

[0002] In industrial production, various valves such as gate valves, globe valves, butterfly valves, and ball valves are indispensable control components in fluid transportation systems. They are widely used in process industries such as petroleum, chemical, power, and metallurgy. Their ease of operation, operational safety, and maintenance directly affect production continuity and operational safety. In existing industrial valve operation and control systems, the realization of core functions such as switching, locking, and maintenance largely relies on separate components and complex operating procedures. The basic direct-connection manual operation mode remains the industry mainstream. This mode directly connects the handwheel to the upper end of the valve stem, converting rotational torque into the lifting and lowering motion of the valve stem to drive the valve disc to open and close. The valve sealing surfaces are prone to wear and leakage due to long-term scouring and friction from the medium. Traditional maintenance methods require disassembling the entire valve from the pipeline, which not only results in long maintenance cycles and high maintenance costs but also leads to production interruptions, seriously affecting the continuity of industrial production. To solve the above problems, valve drive mechanisms integrating deceleration, anti-misoperation, and online grinding functions have emerged in the industry. Through a gear reduction system to reduce operating force, a protective cap to achieve physical anti-misoperation, and a manual grinding structure to complete online repair of the sealing surface, valve operation convenience, safety, and maintenance efficiency have been improved to a certain extent.

[0003] CN101954610A discloses a valve repair method, particularly a method for repairing the sealing surface of a slurry valve. The aim is to provide a valve sealing surface repair method that can directly repair valves on process pipelines without affecting production. It features the advantages of not requiring valve disassembly, simplicity, and low cost. The method is performed according to the following steps: 1) Disconnect the anti-rotation mechanism transmission chain of the valve stem, allowing the valve stem to rotate around its axis and move linearly along its axis; 2) Push the valve stem so that the valve disc at the front end of the valve stem presses against the valve seat, then rotate the valve stem so that the valve disc rotates around the valve stem axis, grinding the sealing surface between the valve disc and the valve seat until deposits and scales on the valve disc and valve seat sealing surfaces are eliminated.

[0004] This device can grind and repair valve sealing surfaces online without disassembling the valve or affecting production. It is simple to operate and low in cost. However, it cannot be adapted to the sealing surfaces of different types of valves, and it lacks a speed-reducing and labor-saving structure as well as a physical anti-misoperation structure. The grinding parts are also not replaceable. Therefore, a valve with a multi-functional grindable speed-reducing mechanism to prevent misoperation is proposed. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a valve with a multifunctional grindable deceleration mechanism that prevents misoperation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a valve with a multifunctional grindable deceleration mechanism for preventing misoperation, comprising a bracket, a box cover bolted to the top of the bracket, a valve body bolted to the bottom of the bracket, a bearing installed inside the box cover, a valve stem nut rotatably connected inside the box cover, a large gear fixed outside the valve stem nut, a valve stem body installed inside the bearing, a locking handle threaded to the upper middle part of the valve stem body, a grinding handle installed at the top of the valve stem body, a connecting flange fixed to one end of the box cover, a protective seat detachably fixed to the connecting flange, a drive connector installed at one end of the protective seat, a small gear fixed to one end of the drive connector, a handwheel installed at one end of the small gear, a valve disc installed at the bottom of the valve stem body, a valve seat bolted to the bottom of the valve body, a quick-release mechanism fixed to the bottom of the valve stem body, and a limit ring fixed outside the valve stem body.

[0007] Preferably, the valve stem nut and the valve stem body are threaded together, the large gear has several sets of teeth fixed to its exterior, the small gear has several sets of teeth fixed to its exterior, and the large gear and the small gear are meshed together.

[0008] Preferably, the diameter of the limiting ring is larger than the diameter of the valve stem body, and the top pressing end of the locking handle is directly opposite the outer circumferential surface of the valve stem body. The larger diameter of the limiting ring prevents damage to the sealing surface caused by excessive compression between the valve disc and the valve seat due to overtravel operation, or component failure caused by the valve stem dislodging from the transmission structure. At the same time, the limiting ring can provide auxiliary guidance for the movement trajectory of the valve stem body, reduce radial offset during its lifting and lowering process, ensure the stability of the thread engagement and gear transmission between the valve stem nut and the valve stem body, and avoid uneven wear affecting transmission efficiency and component life.

[0009] Preferably, the bottom end of the valve disc and the top sealing surface of the valve seat are in contact with each other. The valve disc is provided with three shapes: disc-shaped, conical, and semi-circular. The bottom end of the valve disc and the top sealing surface of the valve seat are in contact with each other to form a tight sealing fit surface, blocking the fluid flow channel, ensuring the sealing performance of the valve, preventing media leakage, and adapting to the sealing requirements of various fluid transportation. The valve disc is provided with three shapes: disc-shaped, conical, and semi-circular, which can be adapted to the sealing surface structure of different types of valves such as gate valves, globe valves, and butterfly valves. This allows the same deceleration and grinding mechanism to be adapted to the installation of multiple types of valves, greatly improving the versatility and adaptability of the device. There is no need to design matching mechanisms separately for different valves, reducing the research and development, production and replacement costs of the equipment. At the same time, the multi-shaped valve discs can be flexibly selected according to the characteristics of the pipeline medium and sealing requirements to meet the usage needs of different industrial scenarios.

[0010] Preferably, the quick-release mechanism includes a mounting plate, a fixing seat, and a positioning lock sleeve. The mounting plate is fixedly connected to the valve stem body, the fixing seat is fixedly connected to the mounting plate, and the positioning lock sleeve is fixedly connected to the fixing seat.

[0011] Preferably, a locking ball is movably connected inside the positioning lock sleeve, a return spring is installed outside the positioning lock sleeve, a latch handle is movably connected outside the positioning lock sleeve, a limit hole is opened at the top of the positioning lock sleeve, a top rod is fixed at the bottom of the latch handle, and a limit post is fixed at the top of the valve disc.

[0012] Preferably, four sets of fixing seats are provided, and the fixing seats are arranged in a circular array about the central axis of the mounting plate. Several sets of locking beads are provided, and the locking beads are arranged in a circular array.

[0013] Preferably, the bottom end of the return spring is fixedly connected to the inside of the latch handle, and the return spring is used to press the latch handle and keep it moving downward.

[0014] Preferably, the outer wall of the latch handle is fitted to the inner wall of the fixing seat, the latch handle and the fixing seat are slidably connected, the inner wall of the latch handle is fitted to the outer wall of the positioning lock sleeve, the latch handle and the positioning lock sleeve are slidably connected, and a protrusion ring is provided inside the latch handle.

[0015] Preferably, there are two sets of top rods, which are symmetrically distributed about the central axis of the latch handle, and there are two sets of limiting holes, which are of different depths.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This invention, through the combination of a drive connector, a protective seat, and a handwheel, enables the device to control valve operation against accidental operation. The protective seat can block the drive connector after the handwheel is removed, preventing unauthorized personnel from accidentally operating the valve. The drive connector enables quick connection between the handwheel and the transmission components, ensuring the standardization and controllability of operation, ultimately improving the safety of valve operation and preventing production accidents caused by misoperation.

[0018] This invention, through the combination of a small gear, a valve stem nut, and a large gear, enables the device to achieve deceleration and labor-saving transmission for valve opening and closing. The small gear meshes with the large gear to form a deceleration mechanism, reducing the operating torque of the handwheel. The large gear drives the valve stem nut to rotate and converts it into linear motion of the valve stem body, enabling easy operation of large valves. Ultimately, this achieves the effect of reducing the intensity of valve operation and improving the convenience of opening and closing.

[0019] This invention enables online grinding and repair of valve sealing surfaces by setting up a grinding handle, valve stem body, valve disc, and other structures. After loosening the locking handle, rotating the grinding handle drives the valve stem body and valve disc to rotate, causing the valve disc and valve seat sealing surfaces to grind against each other, removing wear impurities and repairing a smooth sealing surface. This does not require disassembling the valve, ultimately achieving the effect of shortening the valve maintenance cycle, ensuring sealing performance, and not affecting production continuity.

[0020] This invention, through the combination of a mounting plate, a fixing seat, and a positioning lock sleeve, enables the device to quickly disassemble and replace the valve disc. The mounting plate secures the quick-release mechanism to the valve stem body, the fixing seat provides installation support for the positioning lock sleeve, and the positioning lock sleeve, in conjunction with the locking ball assembly, enables the valve disc to be quickly locked and unlocked without the need for specialized tools. Ultimately, this improves the efficiency of valve disc replacement and meets the long-term maintenance needs of valves. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional grinding state structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the box cover handwheel in the removed state of the present invention;

[0024] Figure 4 This is a schematic diagram of the box cover handwheel installation state structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the passage state structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the grinding state structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the valve stem body and valve disc structure of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the valve stem body and valve disc portion of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged cross-sectional view of a portion of point A in the middle section;

[0030] Figure 10 This is a schematic cross-sectional view of the quick-release mechanism of the present invention;

[0031] Figure 11 This is an exploded view of the quick-release mechanism of the present invention;

[0032] Figure 12These are schematic diagrams of valve flap structures of different shapes according to the present invention;

[0033] Figure 13 This is a schematic diagram of the baffle installation state structure of the present invention;

[0034] Figure 14 This is a front view structural diagram of the baffle plate in its installed state according to the present invention.

[0035] In the diagram: 1. Bracket; 2. Cover; 3. Valve body; 4. Bearing; 5. Valve stem nut; 6. Large gear; 7. Valve stem body; 8. Locking handle; 9. Grinding handle; 10. Drive connector; 11. Small gear; 12. Protective seat; 13. Handwheel; 14. Valve disc; 15. Valve seat; 16. Quick release mechanism; 1601. Mounting plate; 1602. Fixed seat; 1603. Positioning lock sleeve; 1604. Locking ball; 1605. Return spring; 1606. Limiting hole; 1607. Locking handle; 1608. Top rod; 1609. Limiting post; 17. Limiting ring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 14As shown, this invention provides a valve with a multifunctional grindable deceleration mechanism to prevent misoperation. It includes a bracket 1, a cover 2 bolted to the top of the bracket 1, a valve body 3 bolted to the bottom of the bracket 1, a bearing 4 installed inside the cover 2, a valve stem nut 5 rotatably connected inside the cover 2, a large gear 6 fixed to the outside of the valve stem nut 5, a valve stem body 7 installed inside the bearing 4, a locking handle 8 threaded to the upper middle part of the valve stem body 7, a grinding handle 9 installed at the top of the valve stem body 7, a connecting flange fixed to one end of the cover 2, a protective seat 12 detachably fixed to the connecting flange, a drive connector 10 installed at one end of the protective seat 12, and a small gear 1 fixed to one end of the drive connector 10. 1. A handwheel 13 is installed at one end of the small gear 11. A valve disc 14 is installed at the bottom end of the valve stem body 7. A valve seat 15 is bolted to the bottom end of the valve body 3. A quick-release mechanism 16 is fixed to the bottom end of the valve stem body 7. A limit ring 17 is fixed to the outside of the bracket 1. The valve stem nut 5 is threaded to the valve stem body 7. Several sets of teeth are fixed to the outside of the large gear 6. Several sets of teeth are fixed to the outside of the small gear 11. The large gear 6 and the small gear 11 are meshed. The diameter of the limit ring 17 is larger than the diameter of the valve stem body 7. The top pressure end of the locking handle 8 is directly opposite the outer circumference of the valve stem body 7. The bottom end of the valve disc 14 and the sealing surface of the top of the valve seat 15 are in contact. The valve disc 14 is provided with three shapes: disc-shaped, conical, and semi-circular.

[0038] The above solution involves the operator removing handwheel 13 when the valve needs to be locked in a certain state, fixing the protective seat 12 via the flanges on both sides to block the inlet. A baffle is inserted into the slot of the protective seat 12 and tightened with bolts to block the square hole in the middle of the protective seat 12, preventing accidental contact and changes in the valve's state. When handwheel 13 is in the installed state, rotating it drives the pinion 11, which in turn drives the large gear 6. Since the large gear 6 is fixedly connected to the valve stem nut 5, it drives the valve stem nut 5 to rotate, thereby driving the valve... The valve stem body 7 inside the valve moves slowly up and down in a straight line, thus opening and closing the valve. The small gear 11 drives the large gear 6, allowing people to easily operate the large valve. After the valve has been in use for a long time, the sealing surface will wear and leak water. At this time, by loosening the locking handle 8 at the top, the valve stem body 7 can be released from its fixation. Then, the grinding handle 9 can be manually rotated to rotate the valve stem body 7 and the valve disc 14 at the bottom. This allows the valve disc 14 to rotate and grind slightly with the sealing surface of the valve seat 15 it contacts, removing wear and impurities and re-forming a smooth and flat sealing surface. After grinding, tighten the locking handle 8, and the valve will be sealed again without disassembly.

[0039] like Figures 1 to 14As shown, the quick-release mechanism 16 includes a mounting plate 1601, a fixed base 1602, and a positioning lock sleeve 1603. The mounting plate 1601 is fixedly connected to the valve stem body 7, the fixed base 1602 is fixedly connected to the mounting plate 1601, and the positioning lock sleeve 1603 is fixedly connected to the fixed base 1602. A locking ball 1604 is movably connected inside the positioning lock sleeve 1603, a return spring 1605 is installed outside the positioning lock sleeve 1603, and a latch handle 1607 is movably connected outside the positioning lock sleeve 1603. A limit hole 1606 is opened at the top of the positioning lock sleeve 1603, a top rod 1608 is fixed at the bottom of the latch handle 1607, a limit post 1609 is fixed at the top of the valve disc 14, and four sets of fixed bases 1602 are arranged in a circular array about the central axis of the mounting plate 1601. The device includes several sets of locking beads 1604 arranged in a circular array. The bottom end of the return spring 1605 is fixedly connected to the inside of the latch handle 1607. The return spring 1605 is used to press the latch handle 1607 and keep it moving downwards. The outer wall of the latch handle 1607 is attached to the inner wall of the fixing seat 1602. The latch handle 1607 and the fixing seat 1602 are slidably connected. The inner wall of the latch handle 1607 is attached to the outer wall of the positioning lock sleeve 1603. The latch handle 1607 and the positioning lock sleeve 1603 are slidably connected. The inside of the latch handle 1607 is provided with a protruding ring. Two sets of push rods 1608 are provided. The push rods 1608 are symmetrically distributed about the central axis of the latch handle 1607. Two sets of limiting holes 1606 are provided. The two sets of limiting holes 1606 have different depths.

[0040] The above solution involves controlling the radial movement of the locking ball 1604 by switching the push rod 1608 on the latch handle 1607 between the deep and shallow limiting holes of the limiting hole 1606. The return spring 1605 provides continuous return force. When the latch handle 1607 is in the unlocked position, the locking ball 1604 retracts, allowing the limiting post 1609 to slide freely. When the latch handle 1607 is switched to the locked position, the push rod 1608 pushes the locking ball 1604 into the groove of the limiting post 1609, forming a reliable self-locking mechanism. In the self-locking state, the return spring 1605 continuously applies force, keeping the push rod 1608 in the deep limiting hole position, thus firmly securing the locking ball 1604. Pressed firmly into the groove to ensure the stability of valve disc 14, when valve disc 14 can no longer be ground after multiple uses, the operator manually pulls all locking handles 1607 and rotates them to the unlocked position, causing the push rod 1608 to move to the shallow position of the limiting hole 1606. The return spring 1605 is compressed, and the push rod 1608 releases the pressure on the locking ball 1604. The locking ball 1604 is pushed out of the groove by the inclined surface of the limiting post 1609, releasing the self-locking constraint. At this time, valve disc 14 can be pulled out directly, and the limiting post 1609 is pulled out from the positioning lock sleeve 1603, completing the removal of valve disc 14, and a new valve disc 14 is taken out to replace it.

[0041] The working principle and usage process of this invention are as follows: First, complete the overall assembly and debugging of the device, confirm that the bolt connections between the bracket 1 and the box cover 2 and the valve body 3 are not loose, the bearing 4 and the valve stem body 7 have a reasonable clearance and rotate smoothly, the valve stem nut 5 and the valve stem body 7 have good thread engagement, the tooth surfaces of the small gear 11 and the large gear 6 have uniform contact, the locking ball 1604 of the quick release mechanism 16 moves without jamming, the elastic performance of the return spring 1605 meets the standard, the sealing surfaces of the valve disc 14 and the valve seat 15 are tightly fitted, each operating handle and connecting component is firmly fixed, and the limit ring 17 is accurately installed, ensuring that all components of the valve are in normal working condition and have the conditions for opening and closing, preventing misoperation, grinding and repair, and valve disc replacement.

[0042] During the normal valve opening and closing operation, the handwheel 13 is connected to the drive connector 10. At this time, the limit pin between the limit ring 17 and the valve stem body 7 is in the inserted position, forming a circumferential limit constraint. The operator turns the handwheel 13, which drives the pinion 11 to rotate around its own axis. The pinion 11 meshes with and drives the large gear 6 to rotate synchronously. The operating torque is reduced by using gear reduction transmission. The large gear 6 is fixedly connected to the valve stem nut 5, which drives the valve stem nut 5 to rotate inside the housing cover 2. Through the threaded engagement between the valve stem nut 5 and the valve stem body 7, the rotational motion is converted into the up-and-down linear motion of the valve stem body 7. The valve stem body 7 drives the bottom valve disc 14. Synchronous movement allows the valve disc 14 to approach or disengage from the sealing surface of the valve seat 15, thereby opening and closing the valve. The limiting ring 17 on the outside of the valve stem body 7 limits its vertical movement to prevent damage to the sealing surface or failure of transmission components due to overtravel. When the valve needs to maintain a specific open or closed state and to prevent misoperation, the operator removes the handwheel 13 and fixes the protective seat 12 to the corresponding position on the box cover 2 through the flanges on both sides. This blocks the operating entrance of the drive connector 10 and the pinion 11, while ensuring that the limiting pin remains in the inserted state. This double protection prevents unauthorized personnel from touching the valve and causing erroneous changes in the valve state, thus improving the safety of valve operation.

[0043] After prolonged use, the sealing surfaces of valve disc 14 and valve seat 15 accumulate a buildup of deposited slurry. In this case, online grinding repair is performed. The operator loosens the locking handle 8 at the top of bracket 1 and removes the limiting pin that restricts the circumferential movement of the limiting ring 17 and valve stem body 7, completely releasing the circumferential constraint on the valve stem body 7. The operator then manually rotates the grinding handle 9 at the top of valve stem body 7, causing the valve stem body 7 and valve disc 14 at the bottom to slowly rotate around the axis. This allows the sealing surfaces of valve disc 14 and valve seat 15 to come into contact and rub against each other, removing the slurry deposits and impurities and re-forming a smooth and flat sealing surface. After grinding, the limiting pin is reinserted to restore the circumferential restriction of the limiting ring 17 and valve stem body 7. The locking handle 8 is then tightened to re-fix the circumferential position of the valve stem body 7, restoring the valve's sealing performance. The entire process does not require disassembling the valve from the pipeline, ensuring uninterrupted industrial production.

[0044] When the sealing surface of valve disc 14 cannot be repaired after repeated grinding and the leakage problem cannot be solved, the valve disc can be quickly replaced through quick-release mechanism 16. The operator manually pulls the locking handle 1607 of quick-release mechanism 16 and rotates it to the unlocked position, so that the push rod 1608 at the bottom of the locking handle 1607 switches from the deep hole position of the limiting hole 1606 to the shallow hole position. During this process, the return spring 1605 is compressed and generates elastic deformation. The push rod 1608 releases the radial pressure on the locking ball 1604. Under the action of the inclined surface of the groove of the limiting post 1609, the locking ball 1604 moves radially inward along the positioning lock sleeve 1603. Returning to the original position releases the self-locking constraint on the limiting post 1609. At this point, the operator can directly pull out the valve disc 14, causing the limiting post 1609 to be extracted from the positioning lock sleeve 1603, thus completing the removal of the old valve disc. Depending on the pipeline usage requirements, a new valve disc 14 in the shape of a disc, cone, or semicircle is selected. The limiting post 1609 is inserted into the positioning lock sleeve 1603, and the locking handle 1607 is rotated in the opposite direction. The return spring 1605 releases its elastic potential energy, pushing the push rod 1608 to press the locking ball 1604, causing the locking ball 1604 to move radially outward and embed into the groove of the limiting post 1609, forming a reliable self-locking mechanism, thus completing the rapid installation of the new valve disc.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve with a multi-functional grindable deceleration mechanism for preventing misoperation, comprising a bracket (1), characterized in that: The top of the bracket (1) is bolted to a cover (2), and the bottom of the bracket (1) is bolted to a valve body (3). A bearing (4) is installed inside the cover (2). A valve stem nut (5) is rotatably connected inside the cover (2). A large gear (6) is fixed to the outside of the valve stem nut (5). A valve stem body (7) is installed inside the bearing (4). A locking handle (8) is threaded to the upper middle part of the valve stem body (7). A grinding handle (9) is installed at the top of the valve stem body (7). One end of the cover (2) is fixed with... A connecting flange is provided, and a protective seat (12) is detachably and fixedly connected to the connecting flange. A drive connector (10) is installed at one end of the protective seat (12). A pinion (11) is fixed at one end of the drive connector (10). A handwheel (13) is installed at one end of the pinion (11). A valve disc (14) is installed at the bottom end of the valve stem body (7). A valve seat (15) is bolted to the bottom end of the valve body (3). A quick-release mechanism (16) is fixed at the bottom end of the valve stem body (7). A limit ring (17) is fixed to the outside of the bracket (1).

2. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 1, characterized in that: The valve stem nut (5) and the valve stem body (7) are threaded together. The large gear (6) has several sets of teeth fixed on its exterior, and the small gear (11) has several sets of teeth fixed on its exterior. The large gear (6) and the small gear (11) are meshed together.

3. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 1, characterized in that: The diameter of the limiting ring (17) is larger than the diameter of the valve stem body (7), and the top pressure end of the locking handle (8) is directly opposite the outer circumferential surface of the valve stem body (7).

4. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 1, characterized in that: The bottom end of the valve disc (14) and the top sealing surface of the valve seat (15) are in contact and connected. The valve disc (14) is provided with three shapes: disc-shaped, conical-shaped and semi-circular.

5. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 1, characterized in that: The quick-release mechanism (16) includes an installation plate (1601), a fixed seat (1602), and a positioning lock sleeve (1603). The installation plate (1601) is fixedly connected to the valve stem body (7), the fixed seat (1602) is fixedly connected to the installation plate (1601), and the positioning lock sleeve (1603) is fixedly connected to the fixed seat (1602).

6. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 5, characterized in that: The positioning lock sleeve (1603) is internally connected to a locking ball (1604), the positioning lock sleeve (1603) is externally installed with a return spring (1605), the positioning lock sleeve (1603) is externally connected to a latch handle (1607), the top of the positioning lock sleeve (1603) is provided with a limiting hole (1606), the bottom of the latch handle (1607) is fixed with a top rod (1608), and the top of the valve disc (14) is fixed with a limiting post (1609).

7. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 6, characterized in that: The fixing base (1602) is provided in four groups, and the fixing base (1602) is arranged in a circular array about the central axis of the mounting plate (1601). The locking beads (1604) are provided in several groups, and the locking beads (1604) are arranged in a circular array.

8. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 6, characterized in that: The bottom end of the return spring (1605) is fixedly connected to the inside of the latch handle (1607). The return spring (1605) is used to press the latch handle (1607) and keep it moving downward.

9. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 6, characterized in that: The outer wall of the latch handle (1607) is attached to the inner wall of the fixing seat (1602), the latch handle (1607) and the fixing seat (1602) are slidably connected, the inner wall of the latch handle (1607) is attached to the outer wall of the positioning lock sleeve (1603), the latch handle (1607) and the positioning lock sleeve (1603) are slidably connected, and a protrusion ring is provided inside the latch handle (1607).

10. The valve with a multi-functional grindable deceleration mechanism for preventing misoperation as described in claim 6, characterized in that: Two sets of top rods (1608) are provided, and the top rods (1608) are symmetrically distributed about the central axis of the locking handle (1607). Two sets of limiting holes (1606) are provided, and the two sets of limiting holes (1606) have different depths.

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