Length-adjustable valve rod and valve used for same

Abstract

The invention relates to the technical field of bathroom valves, in particular to a length-adjustable valve rod and a valve used for the valve rod, the length-adjustable valve rod comprises a valve screw rod, an adjusting mechanism is arranged on the surface of the valve screw rod, the adjusting mechanism is composed of a lengthened screw rod, a lengthened screw groove and a hexagonal sinking groove, and the bottom end of the lengthened screw rod is rotationally connected with a valve plate; a connecting piece is welded to the top end of the valve screw, a hand wheel is fixed to the top end of the connecting piece, a top cover is fixed to the surface of the hand wheel, and a linkage mechanism is connected to the surface of the top cover. A control mechanism is connected to the surface of the top cover and located on one side of the linkage mechanism. The length of the valve rod can be adjusted through rotation of the hand wheel, and auxiliary operation of other tools is not needed; and in addition, bidirectional movement of the valve screw and the lengthened screw can be achieved during adjustment or opening and closing, the speed during length adjustment or valve opening and closing is increased, the adjustment or opening and closing time is greatly shortened, and using convenience is improved.

Description

Technical Field

[0001] This invention relates to the field of bathroom valve technology, specifically to an adjustable-length valve stem and a valve for the same valve stem. Background Technology

[0002] Valves are control components in fluid transport systems, with functions such as shutting off, regulating, guiding, preventing backflow, stabilizing pressure, diverting flow, or overflowing and relieving pressure. Valves are generally composed of components such as valve body, valve cover, valve plate, and valve stem. Among them, the valve stem is an important component of the valve, used for transmission. It is connected to the actuator or handle at the top and directly drives the valve plate to move or rotate at the bottom to realize the valve opening and closing or regulation.

[0003] The stem length of existing valves is fixed and cannot be adjusted during use, making them inconvenient to use. Furthermore, the stem of existing valves cannot move in both directions during adjustment or opening and closing, resulting in a slow valve speed and significantly increasing the time required for adjustment or opening and closing, thus causing considerable inconvenience to users. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable valve stem and a valve for the same valve stem, in order to solve the problem mentioned in the background art that the valve stem of existing valves cannot achieve the function of length adjustment and that the speed of adjusting or opening and closing the valve is slow.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable valve stem, comprising a valve screw, wherein an adjusting mechanism is provided on the surface of the valve screw, and the adjusting mechanism is composed of an extended screw, an extended screw groove, and a hexagonal countersunk groove. The extended screw groove is formed inside the valve screw, and the screw direction of the extended screw groove is the same as that of the valve screw. The extended screw is threadedly connected to the inside of the extended screw groove, and a hexagonal countersunk groove is formed at the top end of the extended screw. A valve plate is rotatably connected to the bottom end of the extended screw. A connector is welded to the top end of the valve screw, and a handwheel is fixed to the top end of the connector. A top cover is fixed to the surface of the handwheel, and a linkage mechanism is connected to the surface of the top cover. This linkage mechanism is used for linkage operation when adjusting the adjusting mechanism. A control mechanism is connected to the surface of the top cover and located on one side of the linkage mechanism. This control mechanism is used to control the rotation operation of the linkage mechanism.

[0006] Preferably, the valve plate has flow channel holes on its surface, which are used for the flow of media.

[0007] Preferably, limit grooves are provided on both sides of the valve plate, which are used to limit the valve plate when it moves up and down.

[0008] Preferably, a through groove is provided at the center of the handwheel surface, and a stud groove is provided at the center of the top of the top cover.

[0009] Preferably, the linkage mechanism includes a lifting stud, a long gear, a hexagonal locking block, and a gear ring. The lifting stud is threadedly connected inside the stud groove, and a hexagonal locking block is fixed at the bottom end of the lifting stud. The hexagonal locking block and the hexagonal recess are interlocked and engaged.

[0010] Preferably, a long gear is fixed to the surface of the lifting stud, and the bottom end of the long gear extends into the interior of the through groove. A toothed ring is provided on the outer side of the long gear, and the toothed ring is fixedly connected to the inner wall of the top cover.

[0011] Preferably, the control mechanism is composed of a movable groove, a T-shaped rod, a return spring, and a transition gear. The movable groove is formed on the surface of the top cover, and the T-shaped rod is movably connected inside the movable groove, with the bottom end of the T-shaped rod extending into the interior of the top cover.

[0012] Preferably, a return spring is sleeved on the surface of the T-shaped rod, and the upper and lower ends of the return spring are fixedly connected to the top cover and the surface of the T-shaped rod, respectively; the bottom end of the T-shaped rod is rotatably connected to an intermediate gear, and the intermediate gear can mesh with the long gear and the gear ring when it is at the lowest point.

[0013] The present invention also provides a valve, including a valve body and a valve cover, wherein the valve cover is fixedly connected to the top end of the valve body by bolts, and a valve screw is installed on the top end of the valve cover, and the top end of the valve screw extends into the interior of the valve body.

[0014] Preferably, a valve stem nut is welded and fixed to the top of the valve cover, and the valve stem nut is threadedly connected to the valve screw.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The adjustable valve stem and the valve used for the valve stem are equipped with an adjustment mechanism, a linkage mechanism, and a control mechanism; by pressing the T-shaped rod, the T-shaped rod moves downward along the movable groove, thereby driving the transition gear to move downward, so that the transition gear meshes with the long gear and the gear ring respectively. Then, by rotating the handwheel, the handwheel drives the gear ring to rotate. When the gear ring rotates, it drives the long gear to rotate under the meshing of the transition gear, causing the lifting stud to rotate. When the lifting stud rotates, it drives the extension screw to rotate under the action of the hexagonal countersink and hexagonal locking block. Since the lifting stud and the stud groove and the extension screw and the extension groove are all threadedly engaged, the extension screw will move up and down, thereby increasing or decreasing the valve's position. After adjusting the length of the rod, the T-shaped rod is loosened. Under the action of the return spring, the T-shaped rod drives the transition gear to reset. At this time, the long gear and the gear ring cannot drive each other. The lifting stud, handwheel, top cover, and valve screw are all relatively stationary. The valve can be opened and closed by rotating the handwheel to drive the valve screw. This invention can adjust the length of the valve rod by rotating the handwheel, which can be done without the assistance of other tools. Moreover, when the handwheel is rotated for adjustment, the valve screw and the extension screw can rotate in opposite directions. Since the helix direction of the extension screw groove is the same as that of the valve screw, the valve screw and the extension screw can move in both directions when adjusting or opening and closing, which increases the speed of length adjustment or valve opening and closing, greatly shortens the adjustment or opening and closing time, and improves the convenience of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the valve stem in its original state according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the valve stem in the extended state of the present invention;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0019] Figure 4 This is a partial cross-sectional enlarged structural schematic diagram of the present invention;

[0020] Figure 5 This is a partial top-view enlarged structural schematic diagram of the present invention;

[0021] Figure 6 This is a schematic diagram of the valve structure of the present invention.

[0022] In the diagram: 1. Valve screw; 11. Connector; 2. Adjusting mechanism; 21. Extended screw; 22. Extended screw groove; 23. Hexagonal countersunk groove; 3. Valve plate; 31. Flow channel hole; 32. Limiting groove; 4. Handwheel; 41. Through groove; 5. Top cover; 51. Screw groove; 6. Linkage mechanism; 61. Lifting stud; 62. Long gear; 63. Hexagonal locking block; 64. Gear ring; 7. Control mechanism; 71. Movable groove; 72. T-shaped rod; 73. Return spring; 74. Transition gear; 8. Valve body; 9. Valve cover; 10. Valve stem nut. Detailed Implementation

[0023] 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, not all embodiments. In addition, the terms "first," "second," "third," "upper," "lower," "left," "right," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. 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.

[0024] The present invention provides a structure for an adjustable valve stem, as shown in the figure below. Figures 1 to 5As shown, the device includes a valve screw 1, on the surface of which is an adjusting mechanism 2. The adjusting mechanism 2 consists of an extended screw 21, an extended screw groove 22, and a hexagonal countersunk groove 23. The extended screw groove 22 is formed inside the valve screw 1, and the screw direction of the extended screw groove 22 is the same as that of the valve screw 1. The extended screw 21 is threadedly connected to the inside of the extended screw groove 22. The top of the extended screw 21 is provided with a hexagonal countersunk groove 23. A valve plate 3 is rotatably connected to the bottom end of the extended screw 21. A flow channel hole 31 is formed on the surface of the valve plate 3 for the flow of the medium. Limiting grooves 32 are formed on both sides of the valve plate 3 for limiting the valve plate 3 during its up and down movement. A connector 11 is welded to the top of the valve screw 1, and a handwheel is fixed to the top of the connector 11. 4. A top cover 5 is fixed to the surface of the handwheel 4. A through groove 41 is opened at the center of the surface of the handwheel 4. A stud groove 51 is opened at the center of the top of the top cover 5. A linkage mechanism 6 is connected to the surface of the top cover 5. The linkage mechanism 6 is used for linkage operation when adjusting the adjustment mechanism 2. The linkage mechanism 6 includes a lifting stud 61, a long gear 62, a hexagonal locking block 63, and a toothed ring 64. The lifting stud 61 is threaded into the inside of the stud groove 51, and the bottom end of the lifting stud 61 is fixed with a hexagonal locking block 63. The hexagonal locking block 63 and the hexagonal recess 23 are interlocked. The surface of the lifting stud 61 is fixed with a long gear 62, and the bottom end of the long gear 62 extends into the inside of the through groove 41. A toothed ring 64 is provided on the outside of the long gear 62, and the toothed ring 64 is fixedly connected to the inner wall of the top cover 5.

[0025] In practice, the handwheel 4 is rotated, which drives the gear ring 64 to rotate. When the gear ring 64 rotates, it drives the long gear 62 to rotate under the meshing of the transition gear 74, causing the lifting stud 61 to rotate. When the lifting stud 61 rotates, it drives the extension screw 21 to rotate under the action of the hexagonal countersunk groove 23 and the hexagonal locking block 63. Since the lifting stud 61 and the stud groove 51 and the extension screw 21 and the extension groove 22 are all threadedly engaged, the extension screw 21 will move up and down, thereby increasing or decreasing the length of the valve stem. After adjustment, the T-shaped rod 72 is loosened. The T-shaped rod 72 will drive the transition gear 74 to reset under the action of the return spring 73. At this time, the long gear 62 and the gear ring 64 cannot drive each other. The lifting stud 61, the handwheel 4, the top cover 5 and the valve screw 1 are all relatively stationary. The valve can be opened and closed by rotating the handwheel 4 to drive the valve screw 1. At this time, the length is also fixed.

[0026] Furthermore, such as Figure 4 as well as Figure 5As shown, a control mechanism 7 is connected to the surface of the top cover 5 and to one side of the linkage mechanism 6. The control mechanism 7 is used to control the rotation of the linkage mechanism 6. The control mechanism 7 is composed of a movable groove 71, a T-shaped rod 72, a return spring 73, and a transition gear 74. The movable groove 71 is opened on the surface of the top cover 5, and the T-shaped rod 72 is movably connected inside the movable groove 71. The bottom end of the T-shaped rod 72 extends into the interior of the top cover 5. The return spring 73 is sleeved on the surface of the T-shaped rod 72, and the upper and lower ends of the return spring 73 are fixedly connected to the surface of the top cover 5 and the surface of the T-shaped rod 72, respectively. The bottom end of the T-shaped rod 72 is rotatably connected to the transition gear 74, and the transition gear 74 can mesh with the long gear 62 and the gear ring 64 when it is at its lowest point.

[0027] During implementation, by pressing the T-shaped rod 72, the T-shaped rod 72 will move downward along the movable groove 71, thereby driving the transition gear 74 to move downward, so that the transition gear 74 meshes with the long gear 62 and the gear ring 64 respectively.

[0028] The present invention also provides a valve structure as follows: Figure 6 As shown, the valve includes a valve body 8 and a valve cover 9. The valve cover 9 is fixedly connected to the top of the valve body 8 by bolts, and the valve screw 1 is installed on the top of the valve cover 9. The top of the valve screw 1 extends into the interior of the valve body 8. A valve stem nut 10 is welded and fixed to the top of the valve cover 9. The valve stem nut 10 is threadedly connected to the valve screw 1.

[0029] During implementation, the valve stem is installed on the valve. After installation, the valve plate 3 will be located inside the valve screw 1. During valve use, by rotating the handwheel 4, the handwheel 4 will drive the valve screw 1 to rotate under the action of the connecting piece 11. When the valve screw 1 rotates, it is threadedly engaged with the valve stem nut 10, causing the valve plate 3 to move up and down, thereby realizing the opening and closing of the valve.

[0030] Working principle: When in use, first install the valve stem on the valve. After installation, the valve plate 3 will be located inside the valve screw 1. During valve use, by rotating the handwheel 4, the handwheel 4 will drive the valve screw 1 to rotate under the action of the connecting part 11. When the valve screw 1 rotates, it is threadedly engaged with the valve stem nut 10, causing the valve plate 3 to move up and down, thereby realizing the opening and closing of the valve.

[0031] During valve operation, if valve stem length adjustment is required, pressing the T-shaped rod 72 causes it to move downwards along the movable groove 71, thereby driving the transition gear 74 to move downwards. This causes the transition gear 74 to mesh with the long gear 62 and the gear ring 64. Subsequently, rotating the handwheel 4 causes the gear ring 64 to rotate. When the gear ring 64 rotates, it drives the long gear 62 to rotate under the meshing of the transition gear 74, causing the lifting stud 61 to rotate. When the lifting stud 61 rotates, it drives the extension screw under the action of the hexagonal countersunk groove 23 and the hexagonal locking block 63. When rod 21 rotates, since the lifting stud 61 and stud groove 51, as well as the extension rod 21 and extension groove 22, are all threadedly engaged, the extension rod 21 will move up and down, thereby increasing or decreasing the length of the valve rod. After adjustment, the T-shaped rod 72 is relaxed, and the T-shaped rod 72 will drive the transition gear 74 to reset under the action of the return spring 73. At this time, the long gear 62 and the gear ring 64 cannot drive each other. The lifting stud 61, handwheel 4, top cover 5, and valve screw 1 are all relatively stationary. By rotating the handwheel 4 to drive the valve screw 1, the valve can be opened and closed, and the length is also fixed at this time.

[0032] This invention allows for valve stem length adjustment simply by rotating the handwheel 4, without the need for any other tools. Furthermore, when the handwheel 4 is rotated, the valve screw 1 and the extension screw 21 rotate in opposite directions. Since the thread direction of the extension screw groove 22 is the same as that of the valve screw 1, bidirectional movement of the valve screw 1 and the extension screw 21 is possible during adjustment or opening / closing. This increases the speed of length adjustment or valve opening / closing, significantly shortens the adjustment or opening / closing time, and improves ease of use.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A valve stem with adjustable length, comprising a valve screw (1), characterized in that: The valve screw (1) is provided with an adjustment mechanism (2), which is composed of an extended screw (21), an extended screw groove (22), and a hexagonal countersunk groove (23). The extended screw groove (22) is opened inside the valve screw (1), and the screw direction of the extended screw groove (22) is the same as that of the valve screw (1). The extended screw (21) is threaded inside the extended screw groove (22), and a hexagonal countersunk groove (23) is opened at the top of the extended screw (21). The bottom end of the extended screw (21) rotates... A valve plate (3) is dynamically connected; a connector (11) is welded to the top of the valve screw (1), and a handwheel (4) is fixed to the top of the connector (11). A top cover (5) is fixed to the surface of the handwheel (4), and a linkage mechanism (6) is connected to the surface of the top cover (5). The linkage mechanism (6) is used for linkage operation when adjusting the adjustment mechanism (2); a control mechanism (7) is connected to the surface of the top cover (5) and to one side of the linkage mechanism (6). The control mechanism (7) is used to control the rotation of the linkage mechanism (6).

2. The adjustable-length valve stem according to claim 1, characterized in that: The valve plate (3) has a flow channel hole (31) on its surface, which is used for the flow of the medium.

3. The adjustable-length valve stem according to claim 1, characterized in that: Limiting grooves (32) are provided on both sides of the valve plate (3). These limiting grooves (32) are used to limit the valve plate (3) when it moves up and down.

4. The adjustable-length valve stem according to claim 1, characterized in that: A through groove (41) is provided at the center of the surface of the handwheel (4), and a stud groove (51) is provided at the center of the top of the top cover (5).

5. The adjustable-length valve stem according to claim 1, characterized in that: The linkage mechanism (6) includes a lifting stud (61), a long gear (62), a hexagonal locking block (63), and a gear ring (64). The lifting stud (61) is threaded into the inside of the stud groove (51), and the bottom end of the lifting stud (61) is fixed with a hexagonal locking block (63), and the hexagonal locking block (63) and the hexagonal recess (23) are interlocked.

6. The adjustable-length valve stem according to claim 5, characterized in that: The surface of the lifting stud (61) is fixed with a long gear (62), and the bottom end of the long gear (62) extends into the interior of the through groove (41). A toothed ring (64) is provided on the outer side of the long gear (62), and the toothed ring (64) is fixedly connected to the inner wall of the top cover (5).

7. The adjustable-length valve stem according to claim 1, characterized in that: The control mechanism (7) is composed of a movable groove (71), a T-shaped rod (72), a return spring (73), and a transition gear (74). The movable groove (71) is opened on the surface of the top cover (5), and the T-shaped rod (72) is movably connected inside the movable groove (71), and the bottom end of the T-shaped rod (72) extends into the interior of the top cover (5).

8. The adjustable-length valve stem according to claim 7, characterized in that: A return spring (73) is sleeved on the surface of the T-shaped rod (72), and the upper and lower ends of the return spring (73) are fixedly connected to the top cover (5) and the surface of the T-shaped rod (72) respectively; the bottom end of the T-shaped rod (72) is rotatably connected to an intermediate gear (74), and the intermediate gear (74) can mesh with the long gear (62) and the gear ring (64) when it is at the lowest point.

9. A valve used in a length-adjustable valve stem as described in any one of claims 1-8, comprising a valve body (8) and a valve cover (9), characterized in that: The valve body (8) is fixedly connected to the top of the valve cover (9) by bolts, and the valve screw (1) is installed on the top of the valve cover (9), and the top of the valve screw (1) extends into the interior of the valve body (8).

10. A valve according to claim 9, characterized in that: A valve stem nut (10) is welded and fixed to the top of the valve cover (9), and the valve stem nut (10) is threadedly connected to the valve screw (1).

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