A sealing structure for a valve

Abstract

The utility model relates to the technical field of valves, and proposes a sealing structure for valves, comprising: a valve component, the valve component comprising a connecting pipe and a rotating rod; a sealing component, the sealing component comprising a rotating disk, a fixed rod, a worm wheel, a worm, a screw and a sealing block; the rotating disk is fixedly connected to the central position of the top end of the rotating rod, the fixed rod is fixedly connected to the bottom end of the rotating disk, the worm wheel is fixedly connected to the bottom end of the fixed rod, the worm is meshed with positions on both sides of the worm wheel, the screw is threadedly connected to positions at both ends inside the worm, and the sealing block is fixedly connected to the outer end of the screw, so as to solve the problem that the sealing effect of a ball valve is achieved by driving the ball valve to rotate through the rotation of the valve stem, thereby achieving sealing, but when the ball valve rotates inside the valve body, due to friction, the outer surface of the ball valve will be worn after long-term use, so that the sealing performance of the ball valve will be lost with the increase of use time.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and in particular to a sealing structure for valves. Background Art

[0002] There are many types of valves, but their basic functions are the same, that is, to connect or cut off the flow of media. To ensure that the valve can effectively cut off the flow of media and prevent leakage, it is necessary to ensure that the valve seals well. Therefore, the sealing problem of valves is very prominent. The ball valve is driven by the rotation of the valve stem to achieve sealing. However, when the ball valve rotates inside the valve body, due to friction, the outer surface of the ball valve will be worn after long-term use, so that the sealing of the ball valve will be lost as the use time increases. Utility Model Content

[0003] The utility model proposes a sealing structure for a valve to solve the problem proposed in the above background technology that the sealing effect of a ball valve is achieved by rotating the valve stem to drive the ball valve to rotate, thereby achieving sealing, but when the ball valve rotates inside the valve body, due to friction, the outer surface of the ball valve will be worn after long-term use, so that the sealing performance of the ball valve will be lost as the use time increases.

[0004] The utility model is a sealing structure for a valve, comprising:

[0005] A valve assembly, the valve assembly comprising a connecting pipe and a rotating rod;

[0006] A sealing assembly, the sealing assembly comprising a rotating disk, a fixed rod, a worm gear, a worm, a screw and a sealing block;

[0007] The turntable is fixedly connected to the center position of the top of the rotating rod, the fixed rod is fixedly connected to the bottom position of the turntable, the worm wheel is fixedly connected to the bottom position of the fixed rod, the worm is meshed with the positions on both sides of the worm wheel, the screw is threadedly connected to the two end positions inside the worm, and the sealing block is fixedly connected to the outer end position of the screw.

[0008] Furthermore, the valve assembly also includes a valve body, a ball and a runner;

[0009] The connecting pipe is fixedly connected to the two sides of the valve body, the ball is placed inside the valve body, the rotating rod is fixedly connected to the top of the ball, and the rotating wheel is fixedly connected to the outer side of the rotating rod;

[0010] Specifically, the valve body is used to place a ball, the ball can circulate and seal the liquid, the connecting pipe is used to circulate the liquid, the rotating rod is used to drive the ball to rotate, and the rotating wheel is used to drive the rotating rod to rotate.

[0011] Furthermore, the fixing rod is located inside the rotating rod, and the lower end of the fixing rod passes through the upper end of the sphere and extends downward;

[0012] Specifically, the fixing rod can rotate inside the rotating rod, and the rotation of the fixing rod will not drive the ball to rotate.

[0013] Furthermore, the two ends of the worm are rotatably connected to the inner side of the sphere, and the inside of the worm has a hollow structure opened relative to the screw;

[0014] Specifically, the outer surfaces of the worms on both sides of the worm wheel are provided with opposite thread structures, so that when the worm wheel rotates, the worms on both sides rotate in opposite directions.

[0015] Furthermore, the inner surface of the worm and the outer surface of the screw are provided with corresponding thread structures, and the screw penetrates through both sides of the sphere and extends outwards;

[0016] Specifically, when the worm rotates, the screw inside the worm moves outwards driven by the thread structure, and drives the sealing block to move outwards.

[0017] Furthermore, it also includes a movable assembly, which includes a support pipe, a fixed pipe, a steel rope, a filter screen, a telescopic spring, a top plate and a sealing column;

[0018] The support pipe is fixedly connected to the upper end of the connecting pipe on one side, the fixed pipe is fixedly connected to the inner position of the connecting pipe, the two ends of the steel rope are respectively fixedly connected to the bottom end of the sealing column and the inner side of the filter screen, the filter screen is placed at the outer end of the connecting pipe, the telescopic spring is fixedly connected to the upper end of the support pipe, the top plate is fixedly connected to the top end of the telescopic spring, and the sealing column is fixedly connected to the bottom end of the top plate;

[0019] Specifically, the support tube is used to support the telescopic spring, the fixed tube is used to limit the steel rope, the steel rope can drive the filter to move, the filter can filter impurities inside the connecting tube, the telescopic spring is used to limit the position of the top plate, the top plate is used to support the sealing column, and the sealing column is used to seal the inside of the support tube.

[0020] Furthermore, the steel rope passes through the interior of the fixing tube and extends outward, and the fixing tube is an L-shaped structure;

[0021] Specifically, the steel rope is L-shaped inside the fixed pipe, and when the upper end of the steel rope moves driven by the sealing column, the front end of the steel rope moves forward horizontally.

[0022] Further, the sealing column is located at the upper end position inside the support tube, and the upper end position of the fixed tube supports the upper end position inside the support tube;

[0023] Specifically, the sealing column can seal the inside of the support tube so that the liquid inside the connecting tube will not be discharged from the inside of the support tube.

[0024] The working principle and beneficial effects of the utility model are:

[0025] By setting a sealing component, when it is necessary to use a ball to seal the inner end of the connecting pipe inside the valve body, the turntable is rotated to drive the fixed rod to rotate, and the fixed rod drives the worm wheel to rotate, so that the worm is driven by the worm wheel to rotate, and the thread inside the worm moves outward driven by the threaded structure, so that the sealing block seals the inner end of the connecting pipe; when no sealing is needed, the turntable is rotated in the opposite direction; during operation, the sealing block will not contact the inside of the valve body and the inner end of the connecting pipe, will not cause wear, and can be used for a long time; at the same time, by setting a movable component, a filter net is used to block impurities inside the connecting pipe to prevent impurities from being entangled on the outer surfaces of the worm wheel and the worm, causing failure of the sealing component and blockage of the connecting pipe; and by pressing the top plate downward, the top plate drives the steel rope forward through the sealing column to push the filter net outward, thereby facilitating the cleaning of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Figure 1 It is a cross-sectional view of the utility model;

[0028] Figure 2 This is a structural diagram of the valve assembly of the utility model;

[0029] Figure 3 This is a structural diagram of the sealing component of the utility model;

[0030] Figure 4 This is a structural diagram of the active components of the utility model.

[0031] In the figure: 11, valve body; 12, connecting pipe; 13, ball; 14, rotating rod; 15, rotating wheel;

[0032] 21. Rotating plate; 22. Fixed rod; 23. Worm wheel; 24. Worm; 25. Screw; 26. Sealing block;

[0033] 31. Support pipe; 32. Fixed pipe; 33. Steel rope; 34. Filter screen; 35. Telescopic spring; 36. Top plate; 37. Sealing column. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figure 1-3 As shown, this embodiment provides a sealing structure for a valve, comprising:

[0036] A valve assembly, the valve assembly includes a connecting pipe 12 and a rotating rod 14;

[0037] A sealing assembly, the sealing assembly includes a rotating disk 21, a fixing rod 22, a worm wheel 23, a worm 24, a screw 25 and a sealing block 26;

[0038] The turntable 21 is fixedly connected to the top center of the turntable 14, the fixed rod 22 is fixedly connected to the bottom of the turntable 21, the worm wheel 23 is fixedly connected to the bottom of the fixed rod 22, the worm 24 is meshed with the two sides of the worm wheel 23, the screw 25 is threadedly connected to the two ends of the worm 24, and the sealing block 26 is fixedly connected to the outer end of the screw 25;

[0039] The valve assembly also includes a valve body 11, a ball 13 and a runner 15;

[0040] The connecting pipe 12 is fixedly connected to both sides of the valve body 11, the ball 13 is placed inside the valve body 11, the rotating rod 14 is fixedly connected to the top of the ball 13, and the rotating wheel 15 is fixedly connected to the outer side of the rotating rod 14;

[0041] The fixing rod 22 is located inside the rotating rod 14, and the lower end of the fixing rod 22 passes through the upper end of the sphere 13 and extends downward;

[0042] The two ends of the worm 24 are rotatably connected to the inner side of the sphere 13, and the inside of the worm 24 has a hollow structure opened relative to the screw 25;

[0043] The inner surface of the worm 24 and the outer surface of the screw 25 are provided with corresponding thread structures, and the screw 25 passes through both sides of the sphere 13 and extends outwards;

[0044] Working principle: When the inside of the valve body 11 needs to be cut off under the drive of the ball 13, a rotational force is applied to the turntable 21, so that the turntable 21 drives the fixed rod 22 to rotate, the fixed rod 22 drives the worm wheel 23 to rotate, and the worm wheel 23 drives the worm 24 to rotate. When the worm 24 rotates, the screw 25 is driven to move outward through the threaded structure, and the screw 25 drives the sealing block 26 to move outward to seal the inner end of the connecting pipe 12. When the ball 13 needs to be rotated after sealing to allow the valve body 11 to circulate, the turntable 21 is first rotated in the opposite direction to move the sealing block 26 inward, so that the sealing block 26 does not contact the inner wall of the valve body 11 and the outer end of the connecting pipe 12 to avoid friction, and then the turntable 15 drives the turntable 14 and the ball 13 to rotate.

[0045] like Figure 4 As shown, based on the same concept as the above embodiment 1, it also includes:

[0046] The movable assembly includes a support tube 31, a fixed tube 32, a steel rope 33, a filter screen 34, a telescopic spring 35, a top plate 36 and a sealing column 37;

[0047] The support pipe 31 is fixedly connected to the upper end of the connecting pipe 12 on one side, the fixed pipe 32 is fixedly connected to the inner position of the connecting pipe 12, the two ends of the steel rope 33 are respectively fixedly connected to the bottom end of the sealing column 37 and the inner side of the filter screen 34, the filter screen 34 is placed at the outer end of the connecting pipe 12, the telescopic spring 35 is fixedly connected to the upper end of the support pipe 31, the top plate 36 is fixedly connected to the top end of the telescopic spring 35, and the sealing column 37 is fixedly connected to the bottom end of the top plate 36;

[0048] The steel rope 33 passes through the interior of the fixing tube 32 and extends outward, and the fixing tube 32 is an L-shaped structure;

[0049] The sealing column 37 is located at the upper end of the support tube 31, and the upper end of the fixed tube 32 is located at the upper end of the support tube 31;

[0050] Working principle: when liquid flows inside the connecting pipe 12, the filter screen 34 can filter impurities inside the liquid to prevent the impurities from adhering to the outer surfaces of the worm wheel 23 and the worm 24. When the impurities need to be cleaned, downward pressure is applied to the top plate 36 to move the top plate 36 downward and drive the sealing column 37 to move downward. The downward movement of the sealing column 37 drives the steel rope 33 to move forward, so that the filter screen 34 moves to the outer side of the connecting pipe 12 for cleaning. The top plate 36 moves downward to compress the telescopic spring 35. When the cleaning is completed, the force applied to the top plate 36 is stopped, so that the filter screen 34 can be reset.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing structure for a valve, characterized in that: include: A valve assembly, the valve assembly comprising a connecting pipe (12) and a rotating rod (14); A sealing assembly, the sealing assembly comprising a rotating disk (21), a fixed rod (22), a worm wheel (23), a worm (24), a screw (25) and a sealing block (26); The rotating disk (21) is fixedly connected to the central position of the top end of the rotating rod (14), the fixed rod (22) is fixedly connected to the bottom end of the rotating disk (21), the worm wheel (23) is fixedly connected to the bottom end of the fixed rod (22), the worm (24) is meshed with the positions on both sides of the worm wheel (23), the screw (25) is threadedly connected to the positions on both ends of the worm (24), and the sealing block (26) is fixedly connected to the outer end of the screw (25).

2. A valve sealing structure according to claim 1, characterized in that: The valve assembly further comprises a valve body (11), a ball (13) and a rotating wheel (15); The connecting pipe (12) is fixedly connected to positions on both sides of the valve body (11), the ball (13) is placed inside the valve body (11), the rotating rod (14) is fixedly connected to the top position of the ball (13), and the rotating wheel (15) is fixedly connected to the outer position of the rotating rod (14).

3. A valve sealing structure according to claim 1, characterized in that: The fixing rod (22) is located inside the rotating rod (14), and the lower end of the fixing rod (22) penetrates the upper end of the spherical body (13) and extends downward.

4. A valve sealing structure according to claim 1, characterized in that: The two ends of the worm (24) are respectively rotatably connected to the inner side surface of the sphere (13), and the inside of the worm (24) has a hollow structure opened relative to the screw (25).

5. A valve sealing structure according to claim 1, characterized in that: The inner surface of the worm (24) and the outer surface of the screw (25) are provided with corresponding thread structures, and the screw (25) penetrates both sides of the sphere (13) and extends outwards.

6. A valve sealing structure according to claim 1, characterized in that: It also includes a movable assembly, which includes a support tube (31), a fixed tube (32), a steel rope (33), a filter screen (34), a telescopic spring (35), a top plate (36) and a sealing column (37); The support tube (31) is fixedly connected to the upper end of the connecting tube (12) on one side, the fixed tube (32) is fixedly connected to the inner position of the connecting tube (12), the two ends of the steel rope (33) are respectively fixedly connected to the bottom end of the sealing column (37) and the inner side of the filter screen (34), the filter screen (34) is placed at the inner outer end of the connecting tube (12), the telescopic spring (35) is fixedly connected to the surrounding positions of the upper end of the support tube (31), the top plate (36) is fixedly connected to the top end of the telescopic spring (35), and the sealing column (37) is fixedly connected to the bottom end of the top plate (36).

7. A valve sealing structure according to claim 6, characterized in that: The steel rope (33) passes through the interior of the fixing tube (32) and extends outward, and the fixing tube (32) is an L-shaped structure.

8. A valve sealing structure according to claim 6, characterized in that: The sealing column (37) is located at the upper end of the support tube (31), and the upper end of the fixed tube (32) is located at the upper end of the support tube (31).

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