CN223318498U - A ball valve with jam protection function - Google Patents
A ball valve with jam protection functionInfo
- Publication number
- CN223318498U CN223318498U CN202521636988.0U CN202521636988U CN223318498U CN 223318498 U CN223318498 U CN 223318498U CN 202521636988 U CN202521636988 U CN 202521636988U CN 223318498 U CN223318498 U CN 223318498U
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- valve
- rod
- ball
- damping
- shaft rod
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Abstract
本实用新型公开了一种具有卡阻保护功能的球阀，包括阀体、支架、阀杆、执行器和球体，支架安装于阀体上端，执行器安装在支架上，阀杆贯穿阀体上端并伸入阀体内部与球体相连接，阀杆的上端与执行器的输出端相连接，阀体内设有阀座；还包括有保护机构，保护机构包括驱动杆和阻尼套，阀杆包括上轴杆和下轴杆，上轴杆的上端与执行器的输出端相连接，下轴杆的下端与球体相连接，驱动杆安装于上轴杆下端，阻尼套安装在下轴杆上端，驱动杆插接于阻尼套中，二者阻尼配合，当球体卡死时，驱动杆克服阻尼套的阻尼力空转。本实用新型具有卡阻保护功能，在阀门发生卡阻时，执行器的输出端空转，避免阀杆受到较大的扭矩，起到保护阀杆、球体以及阀座的效果。
The utility model discloses a ball valve with a jam protection function, comprising a valve body, a bracket, a valve stem, an actuator, and a ball. The bracket is mounted on the upper end of the valve body, the actuator is mounted on the bracket, the valve stem passes through the upper end of the valve body and extends into the interior of the valve body to connect with the ball, the upper end of the valve stem is connected to the output end of the actuator, and a valve seat is provided in the valve body. The utility model also includes a protection mechanism, which includes a drive rod and a damping sleeve. The valve stem includes an upper shaft and a lower shaft. The upper end of the upper shaft is connected to the output end of the actuator, and the lower end of the lower shaft is connected to the ball. The drive rod is mounted on the lower end of the upper shaft, and the damping sleeve is mounted on the upper end of the lower shaft. The drive rod is inserted into the damping sleeve, and the two cooperate in damping. When the ball is stuck, the drive rod overcomes the damping force of the damping sleeve and rotates idly. The utility model has a jam protection function. When the valve is stuck, the output end of the actuator rotates idly, preventing the valve stem from being subjected to large torque, thereby protecting the valve stem, the ball, and the valve seat.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a ball valve with a blocking protection function.
Background
Ball valves are widely used in fluid control applications where they are used in pipes to open, close, distribute the flow of a fluid medium, change the flow direction and flow rate of a fluid medium, etc.
Currently, ball valves on the market generally comprise a valve body, a valve cover, a valve rod and a ball body, wherein the valve cover is arranged on the upper portion of the valve body, the valve rod penetrates through the valve cover and stretches into the valve body to be connected with the ball body in a linkage mode, and a valve seat used for forming sealing fit with the ball body when the valve is closed is arranged in the valve body. In the use process of the ball valve, the situation that the valve rod can not drive the ball to rotate due to the damage of internal parts, pollution (medium crystallization or solid impurity accumulation) or excessive fastening and the like can occur, namely, the ball valve is blocked, at the moment, if the actuator forcibly starts the valve, the situation such as further blocking, bending of the valve rod, damage of the sealing surface and the like can be easily caused, and therefore, the ball valve with the blocking protection function needs to be designed to avoid the situation.
Disclosure of utility model
The utility model aims to provide a ball valve with a blocking protection function, which has the blocking protection function, and when the valve is blocked, the output end of an actuator idles, so that the valve rod is prevented from receiving larger torque, and the effects of protecting the valve rod, a ball body and a valve seat are achieved.
The ball valve with the blocking protection function comprises a valve body, a support, a valve rod, an actuator and a ball body, wherein the support is arranged at the upper end of the valve body, the actuator is arranged on the support, the valve rod penetrates through the upper end of the valve body and stretches into the valve body to be connected with the ball body, the upper end of the valve rod is connected with the output end of the actuator, valve seats which are used for forming sealing fit with the ball body when the valve is closed are arranged at positions, corresponding to the two sides of the ball body, of the inner wall of the valve body, the ball valve further comprises a protection mechanism and a damping sleeve, the valve rod comprises an upper shaft rod and a lower shaft rod, the upper end of the upper shaft rod is connected with the output end of the actuator, the lower end of the lower shaft rod is connected with the ball body, the driving rod is arranged at the lower end of the upper shaft rod, the damping sleeve is arranged at the upper end of the lower shaft rod, the driving rod is inserted into the damping sleeve, the two damping fit is used for realizing circumferential damping, and when the ball body is closed, the idle running force of the driving rod is overcome.
Through adopting the technical scheme, the valve rod is split into the upper shaft rod and the lower shaft rod, the upper shaft rod and the lower shaft rod are connected through the protection mechanism formed by the driving rod and the damping sleeve, when the valve works normally, the driving rod is in damping fit with the damping sleeve, the upper shaft rod drives the lower shaft rod to rotate when the actuator drives the upper shaft rod to rotate, the lower shaft rod drives the ball body to rotate, and the opening and closing of the valve are realized, when the ball body (or the lower shaft rod) is blocked, the driving rod overcomes the damping force of the damping sleeve to generate rotation relative to the damping sleeve, the actuator drives the upper shaft rod to idle, and the unloading force is carried out, so that the torque borne by the lower shaft rod and the ball body is obviously reduced, the conditions such as further blocking, bending of the valve rod and damage of the sealing surface are avoided, and the effects of protecting the valve rod, the ball body and the valve seat are achieved.
The utility model is further characterized in that a plurality of driving bulges are arranged on the outer circular surface of the driving rod, the driving bulges are in an outwards-protruding cambered surface shape, a plurality of linkage concave parts used for embedding the driving bulges are arranged on the inner circular surface of the damping sleeve, a damping bulge is arranged between every two adjacent linkage concave parts, the damping bulge is in an inwards-protruding cambered surface shape, and the damping bulge is used for preventing the corresponding driving bulge from performing circumferential movement of the relative damping sleeve.
Through adopting above-mentioned technical scheme, when the valve normally works, through the drive protruding on the actuating lever and the linkage concave part complex mode on the damping cover, realize the linkage of going up axostylus axostyle and lower axostylus axostyle, and the bellied cambered surface structural design of drive protruding and damping, when the valve card hinders, the protruding accessible deformation of drive protruding and damping of being convenient for produces relative rotation.
The utility model is further characterized in that the damping sleeve is provided with a yielding hole extending along the axial direction of the damping sleeve at a position corresponding to each damping protrusion.
By adopting the technical scheme, the design of the relief hole is more beneficial to inward deformation of the damping protrusion when the damping protrusion receives larger positive pressure, so that the driving protrusion can move from the initial linkage concave part to the next linkage concave part in sequence.
The utility model is further characterized in that a first mounting groove is formed in the lower end of the upper shaft rod, the upper end of the driving rod is inserted into the first mounting groove, and the driving rod and the upper shaft rod are fixed through pins.
Through adopting above-mentioned technical scheme, can realize the fixed connection of actuating lever and last axostylus axostyle, connection structure is simple reliable, and the dismouting is very convenient.
The utility model is further characterized in that the upper end of the lower shaft rod is provided with a second mounting groove, the damping sleeve is inserted into the second mounting groove, a plurality of linkage protrusions are distributed on the inner circular surface of the second mounting groove in a circumferential array, each linkage protrusion extends along the axial direction of the damping sleeve, and a plurality of linkage grooves matched with the linkage protrusions are formed on the outer circular surface of the damping sleeve.
Through adopting above-mentioned technical scheme, can realize the circumference linkage of damping cover on lower axostylus axostyle, the dismouting is very convenient.
The utility model is further characterized in that the upper end of the lower shaft rod is coaxially provided with a positioning protrusion, and the lower end of the lower shaft rod is provided with a positioning groove matched with the positioning protrusion.
Through adopting above-mentioned technical scheme, can further guarantee the axiality between upper shaft pole and the lower axostylus axostyle, promote its stability of motion.
The utility model is further characterized in that the upper end of the valve body is provided with a sealing groove coaxial with the lower shaft rod, a filler is embedded in the sealing groove, the upper end of the valve body is also connected with a gland through a fastener, and the lower end of the gland stretches into the sealing groove to compress the filler in the sealing groove.
By adopting the technical scheme, the tightness between the valve body and the lower shaft rod can be ensured, and internal media are prevented from leaking to the outside from a gap between the valve body and the lower shaft rod.
The utility model is further characterized in that a limiting flange is integrally arranged at the part, which extends into the valve body, of the periphery of the lower shaft rod, the upper end face of the limiting flange is abutted against the inner wall of the valve body, a first gasket is clamped between the limiting flange and the upper end face of the limiting flange, a limiting ring is sleeved at the part, corresponding to the outer part of the valve body, of the lower shaft rod, the outer circular surface of the limiting ring is connected with a locking screw in a threaded manner along the radial direction, when the locking screw is screwed, the inner end of the locking screw is abutted against the outer circular surface of the lower shaft rod, and a second gasket is clamped between the limiting ring and the gland.
Through adopting above-mentioned technical scheme, can realize axial spacing to the lower valve rod, further promote its stability of motion.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;
FIG. 3 is a schematic view of the assembled structure of the drive rod and damping sleeve of the present utility model;
FIG. 4 is an exploded view of the drive rod and damping sleeve of the present utility model;
fig. 5 is a schematic structural view of the lower shaft of the present utility model.
In the figure, 1, a valve body; 2, a bracket, 3, a valve rod, 4, an actuator, 5, a ball, 6, a valve seat, 7, a protection mechanism, 8, a driving rod, 9, a damping sleeve, 10, an upper shaft rod, 11, a lower shaft rod, 12, a driving protrusion, 13, a linkage concave part, 14, a damping protrusion, 15, a yielding hole, 16, a first mounting groove, 17, a pin, 18, a second mounting groove, 19, a linkage protrusion, 20, a linkage groove, 21, a positioning protrusion, 22, a positioning groove, 23, a sealing groove, 24, a packing, 25, a gland, 26, a limiting flange, 27, a first gasket, 28, a limiting ring, 29, a locking screw, 30 and a second gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment comprises a valve body 1, a support 2, a valve rod 3, an actuator 4 and a ball 5, wherein the support 2 is arranged at the upper end of the valve body 1, the actuator 4 is arranged on the support 2, the actuator 4 can be a combination of a hand wheel and a speed reducer, or can be any one of an electric actuator, a pneumatic actuator, a hydraulic actuator and a manual actuator, the valve rod 3 penetrates through the upper end of the valve body 1 and stretches into the valve body 1 to be connected with the ball 5, the valve rod 3 can be connected in a key connection or joggle connection mode, the upper end of the valve rod 3 is connected with the output end of the actuator 4 by a coupler or key connection, the valve seat 6 used for forming sealing fit with the ball 5 when the valve is closed is arranged at the positions of two sides of the inner wall of the valve body 1, the ball valve also comprises a protection mechanism 7, the protection mechanism 7 comprises a driving rod 8 and a damping sleeve 9, the driving rod 8 and the damping sleeve 9 can be made of plastic materials, the driving rod 8 and the damping sleeve 9 comprise an upper shaft rod 3 and a lower shaft rod 10, the upper end of the driving rod 10 is connected with the lower end of the damping sleeve 10, the upper shaft rod 10 is connected with the lower end of the damping sleeve 9 by the upper shaft rod 10, the lower shaft rod 10 is connected with the lower end of the damping sleeve 9 by the upper shaft rod 10, and the lower shaft rod is connected with the lower end of the upper shaft rod 10 by the lower shaft rod 10, and the upper shaft rod is connected with the lower shaft sleeve 8 by the upper shaft sleeve, and the lower shaft sleeve is connected by the upper shaft sleeve, and the upper shaft sleeve is provided with the lower shaft sleeve is provided with the upper shaft seat 8. The valve rod 3 is split into an upper shaft rod 10 and a lower shaft rod 11, the upper shaft rod 10 and the lower shaft rod 11 are connected through a protection mechanism 7 formed by a driving rod 8 and a damping sleeve 9, when the valve works normally, the driving rod 8 is in damping fit with the damping sleeve 9, when the actuator 4 drives the upper shaft rod 10 to rotate, the upper shaft rod 10 drives the lower shaft rod 11 to rotate, the lower shaft rod 11 drives the ball 5 to rotate, so that the valve is opened and closed, when the ball 5 (or the lower shaft rod 11) is blocked, the driving rod 8 overcomes the damping force of the damping sleeve 9 to rotate relative to the damping sleeve 9, the actuator 4 drives the upper shaft rod 10 to idle and discharge force, so that the torque borne by the lower shaft rod 11 and the ball 5 is obviously reduced, further blocking, bending of the valve rod 3, damage of a sealing surface and the like are avoided, and the effects of protecting the valve rod 3, the ball 5 and the valve seat 6 are achieved.
As shown in fig. 2-5, the outer circumferential surface of the driving rod 8 is provided with a plurality of driving protrusions 12, the driving protrusions 12 are in a strip-shaped structure, the driving protrusions 12 are in an outwards protruding arc surface shape, the inner circumferential surface of the damping sleeve 9 is provided with a plurality of linkage concave parts 13 for the driving protrusions 12 to be embedded, a damping protrusion 14 is arranged between every two adjacent linkage concave parts 13, the damping protrusion 14 is in an inwards protruding arc surface shape, and the damping protrusion 14 is used for preventing the corresponding driving protrusions 12 from performing circumferential movement relative to the damping sleeve 9, and in this embodiment, the number of the driving protrusions 12, the linkage concave parts 13 and the damping protrusions 14 is eight. When the valve works normally, the upper shaft lever 10 and the lower shaft lever 11 are linked through the mode that the driving bulge 12 on the driving lever 8 is matched with the linkage concave part 13 on the damping sleeve 9, and the cambered surface structure design of the driving bulge 12 and the damping bulge 14 is convenient for the driving bulge 12 and the damping bulge 14 to generate relative rotation through deformation when the valve is blocked.
As shown in fig. 3, the damping sleeve 9 is provided with a relief hole 15 extending along the axial direction of the damping sleeve 9 at a position corresponding to each damping protrusion 14. The design of the relief holes 15 is more beneficial to the inward deformation of the damping protrusions 14 when a large positive pressure is applied to the damping protrusions, so that the driving protrusions 12 can move from the initial linkage concave parts 13 to the next linkage concave parts 13 in sequence.
As shown in fig. 2-5, a first mounting groove 16 is provided at the lower end of the upper shaft 10, the upper end of the driving rod 8 is inserted into the first mounting groove 16, and the driving rod 8 and the upper shaft 10 are fixed by a pin 17, i.e. an outer hole connected with the first mounting groove 16 and used for passing through the pin 17 is provided on the upper shaft 10 in a radial direction, and an inner hole used for passing through the pin 17 is provided on the driving rod 8. The design can realize the fixed connection of the driving rod 8 and the upper shaft rod 10, and the connecting structure is simple and reliable and is quite convenient to assemble and disassemble.
As shown in fig. 2-5, the upper end of the lower shaft rod 11 is provided with a second mounting groove 18, the damping sleeve 9 is inserted into the second mounting groove 18, a plurality of linkage protrusions 19 are distributed on the inner circular surface of the second mounting groove 18 in a circumferential array, each linkage protrusion 19 extends along the axial direction of the damping sleeve 9, and a plurality of linkage grooves 20 which are matched with the linkage protrusions 19 are formed on the outer circular surface of the damping sleeve 9. The design can realize the circumferential linkage of the damping sleeve 9 on the lower shaft lever 11, and the assembly and the disassembly are very convenient.
As shown in fig. 2, a positioning protrusion 21 is coaxially disposed at the upper end of the lower shaft 11, and a positioning groove 22 engaged with the positioning protrusion 21 is disposed at the lower end of the lower shaft 11. The design can further ensure the coaxiality between the upper shaft lever 10 and the lower shaft lever 11, and improve the stability of the movement of the upper shaft lever 10 and the lower shaft lever 11.
As shown in fig. 1, the upper end of the valve body 1 is provided with a sealing groove 23 coaxial with the lower shaft rod 11, a packing 24 is embedded in the sealing groove 23, the packing 24 is arranged on the periphery of the lower shaft rod 11, the upper end of the valve body 1 is also connected with a gland 25 through a fastener, and the lower end of the gland 25 stretches into the sealing groove 23 to compress the packing 24 in the sealing groove 23. This design ensures tightness between the valve body 1 and the lower shaft 11, avoiding leakage of the internal medium from the gap between the two to the outside.
As shown in fig. 1-5, a position of the outer periphery of the lower shaft rod 11 extending into the valve body 1 is integrally provided with a limit flange 26, an upper end face of the limit flange 26 is abutted against the inner wall of the valve body 1, a first gasket 27 is clamped between the upper end face and the inner wall of the limit flange, a position of the lower shaft rod 11 corresponding to the outer portion of the valve body 1 is sleeved with a limit ring 28, an outer circular surface of the limit ring 28 is in threaded connection with a locking screw 29 in the radial direction, when the locking screw 29 is screwed, an inner end of the locking screw 29 is abutted against an outer circular surface of the lower shaft rod 11, and a second gasket 30 is clamped between the limit ring 28 and the gland 25. The design can realize axial limit on the lower valve rod 3, and further improve the stability of the movement of the lower valve rod.
Claims (8)
1. A ball valve with a blocking protection function comprises a valve body (1), a support (2), a valve rod (3), an actuator (4) and a ball body (5), wherein the support (2) is arranged at the upper end of the valve body (1), the actuator (4) is arranged on the support (2), the valve rod (3) penetrates through the upper end of the valve body (1) and stretches into the valve body (1) to be connected with the ball body (5), the upper end of the valve rod (3) is connected with the output end of the actuator (4), the positions, corresponding to the two sides of the ball body (5), of the inner wall of the valve body (1) are provided with valve seats (6) which are used for forming sealing fit with the ball body (5) when the valve is closed, the ball valve is characterized by further comprising a protection mechanism (7), the protection mechanism (7) comprises a driving rod (8) and a damping sleeve (9), the valve rod (3) comprises an upper shaft rod (10) and a lower shaft rod (11), the upper end of the upper shaft rod (10) is connected with the output end of the ball body (4), the lower end of the valve rod (3) is connected with the output end of the actuator (11), the lower shaft rod (11) is connected with the driving rod (8) through the driving rod (8) in an inserting mode, the lower end of the damping sleeve (9) is arranged in the driving rod (8), and the two are in damping fit to realize circumferential linkage, and when the ball body (5) is blocked, the driving rod (8) idles against the damping force of the damping sleeve (9).
2. The ball valve with the blocking protection function according to claim 1, wherein a plurality of driving protrusions (12) are arranged on the outer circular surface of the driving rod (8), the driving protrusions (12) are in an outwards protruding cambered surface shape, a plurality of linkage concave portions (13) used for embedding the driving protrusions (12) are arranged on the inner circular surface of the damping sleeve (9), a damping protrusion (14) is arranged between every two adjacent linkage concave portions (13), the damping protrusion (14) is in an inwards protruding cambered surface shape, and the damping protrusion (14) is used for blocking the corresponding driving protrusions (12) from performing circumferential movement relative to the damping sleeve (9).
3. The ball valve with the blocking protection function according to claim 2, wherein a position of the damping sleeve (9) corresponding to each damping protrusion (14) is provided with a yielding hole (15) extending along the axial direction of the damping sleeve (9) respectively.
4. The ball valve with the jamming protection function according to claim 2, wherein a first mounting groove (16) is formed in the lower end of the upper shaft rod (10), the upper end of the driving rod (8) is inserted into the first mounting groove (16), and the driving rod (8) and the upper shaft rod (10) are fixed through a pin (17).
5. The ball valve with the blocking protection function according to claim 2, wherein a second mounting groove (18) is formed in the upper end of the lower shaft rod (11), the damping sleeve (9) is inserted into the second mounting groove (18), a plurality of linkage protrusions (19) are distributed on the inner circular surface of the second mounting groove (18) in a circumferential array, each linkage protrusion (19) extends along the axial direction of the damping sleeve (9), and a plurality of linkage grooves (20) which are matched with the linkage protrusions (19) are formed in the outer circular surface of the damping sleeve (9).
6. The ball valve with the jamming protection function according to claim 2, wherein a positioning protrusion (21) is coaxially arranged at the upper end of the lower shaft rod (11), and a positioning groove (22) matched with the positioning protrusion (21) is formed at the lower end of the lower shaft rod (11).
7. The ball valve with the jamming protection function according to claim 2, wherein a sealing groove (23) coaxial with the lower shaft rod (11) is formed in the upper end of the valve body (1), a packing (24) is embedded in the sealing groove (23), a pressing cover (25) is further connected to the upper end of the valve body (1) through a fastening piece, and the lower end of the pressing cover (25) stretches into the sealing groove (23) to press the packing (24) into the sealing groove (23).
8. The ball valve with the blocking protection function according to claim 7, wherein a limiting flange (26) is integrally arranged at a part, which is inserted into the valve body (1), of the periphery of the lower shaft rod (11), the upper end face of the limiting flange (26) is abutted against the inner wall of the valve body (1), a first gasket (27) is clamped between the limiting flange and the upper end face of the limiting flange, a limiting ring (28) is sleeved at a part, which corresponds to the outer part of the valve body (1), of the lower shaft rod (11), the outer circular surface of the limiting ring (28) is connected with a locking screw (29) in a threaded manner along the radial direction, when the locking screw (29) is screwed, the inner end of the locking screw (29) is abutted against the outer circular surface of the lower shaft rod (11), and a second gasket (30) is clamped between the limiting ring (28) and the gland (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521636988.0U CN223318498U (en) | 2025-08-04 | 2025-08-04 | A ball valve with jam protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521636988.0U CN223318498U (en) | 2025-08-04 | 2025-08-04 | A ball valve with jam protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223318498U true CN223318498U (en) | 2025-09-09 |
Family
ID=96942069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521636988.0U Active CN223318498U (en) | 2025-08-04 | 2025-08-04 | A ball valve with jam protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223318498U (en) |
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2025
- 2025-08-04 CN CN202521636988.0U patent/CN223318498U/en active Active
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