CN213954409U - Double-drive cam ball valve - Google Patents
Double-drive cam ball valve Download PDFInfo
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- CN213954409U CN213954409U CN202022359551.0U CN202022359551U CN213954409U CN 213954409 U CN213954409 U CN 213954409U CN 202022359551 U CN202022359551 U CN 202022359551U CN 213954409 U CN213954409 U CN 213954409U
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Abstract
The utility model discloses a dual-drive cam ball valve, including valve body, spheroid, be provided with input channel and output channel on the valve body, the spheroid sets up between input channel and output channel, be provided with interface channel on the spheroid, interface channel runs through the spheroid, the one end that is close to the spheroid on the output channel is provided with the disk seat with spheroid matched with, the upper and lower both sides of valve body are provided with upper shaft hole and lower shaft hole respectively, rotate in the upper shaft hole and be connected with the upper valve rod, the lower extreme off-centre of upper valve rod is provided with the cam, be provided with the cam groove corresponding with the cam on the spheroid, the cam is connected in the cam groove; a lower valve rod is rotatably connected in the lower shaft hole, a connector is arranged at the upper end of the lower valve rod, a connecting groove corresponding to the connector is arranged on the ball body, and the connector is connected in the connecting groove; the upper valve rod and the lower valve rod are coaxially arranged. The utility model discloses effectively reduced the spheroid when rotating and the disk seat between the friction, reduced the wearing and tearing to the disk seat, improved the life of disk seat.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to dual drive cam ball valve.
Background
A ball valve is a commonly used valve. The ball valve is controlled by the rotation of an internal opening and closing piece (a ball body). Current ball valve includes valve body, spheroid, is provided with input channel and output channel on the valve body, and the spheroid rotates to set up between input channel and output channel, is provided with interface channel on the spheroid, and interface channel link up the spheroid, and output channel is last be close to spheroidal one end be provided with spheroid assorted disk seat, disk seat and spheroid surface in close contact with, rotate on the valve body and be connected with the valve rod, and the valve rod links to each other with the spheroid, thereby drives the spheroid through rotating the valve rod and rotates. When the ball body rotates to a certain angle, the connecting channel connects the input channel and the output channel, and the ball valve is in an open state; when the ball body continues to rotate for a certain angle, the connecting channel forms a certain angle with the input channel and the output channel, at the moment, the input channel and the output channel are disconnected, and the ball valve is in a closed state. When the ball valve is used, the ball body needs to be frequently rotated, and due to the close contact between the valve seat and the ball body, the ball body generates friction between the ball body and the valve seat when rotating, so that the valve seat can be abraded, the sealing performance of the valve seat can be reduced after the valve seat is abraded, and the service life of the valve seat is prolonged.
Such as: chinese patent publication No. CN105736733B, entitled regulating ball valve, the utility model comprises a valve body, a valve cover, a ball body, a valve rod and a driving mechanism driving the valve rod to rotate, the valve body is provided with a valve cavity, a medium inlet and a medium outlet which are communicated with the valve cavity, the ball body is arranged in the valve cavity and is in linkage connection with the valve rod, the sphere comprises a closing part capable of closing the medium inlet and the medium outlet and a conducting part capable of conducting the medium inlet and the medium outlet, the conducting part comprises a conducting inlet part, a middle through groove and a conducting outlet part which are sequentially connected and arranged from the medium inlet to the medium outlet, the conduction inlet part is provided with a plurality of inlet through holes which are parallel to each other and distributed at intervals, the conduction outlet part is provided with a plurality of outlet through holes which are parallel to each other and distributed at intervals, and the inner end of the inlet through hole and the inner end of the outlet through hole are communicated with the middle through groove. The invention has the following disadvantages: this adjust ball valve when using, the spheroid needs often to rotate because in close contact with between disk seat and the spheroid for the spheroid produces the friction when rotating and between the disk seat, can cause wearing and tearing to the disk seat, can reduce the leakproofness of disk seat after the disk seat wearing and tearing, thereby reduced the life of disk seat.
Disclosure of Invention
The utility model aims at solving current ball valve when using, the spheroid needs often to rotate, and the spheroid produces the friction when rotating and between the disk seat, can cause wearing and tearing to the disk seat, can reduce the leakproofness of disk seat after the disk seat wearing and tearing to reduce the life's of disk seat problem, provide a dual drive cam ball valve, can effectively solve above-mentioned problem.
The utility model aims at realizing through the following technical scheme: a dual-drive cam ball valve comprises a valve body and a ball body, wherein an input channel and an output channel are arranged on the valve body, the ball body is arranged between the input channel and the output channel, a connecting channel is arranged on the ball body and penetrates through the ball body, a valve seat matched with the ball body is arranged at one end, close to the ball body, of the output channel, an upper shaft hole and a lower shaft hole are respectively arranged at the upper side and the lower side of the valve body, an upper valve rod is rotatably connected in the upper shaft hole, a cam is eccentrically arranged at the lower end of the upper valve rod, a cam groove corresponding to the cam is arranged on the ball body, and the cam is connected in the cam groove; a lower valve rod is rotatably connected in the lower shaft hole, a connector is arranged at the upper end of the lower valve rod, a connecting groove corresponding to the connector is arranged on the ball body, and the connector is connected in the connecting groove; the upper valve rod and the lower valve rod are coaxially arranged, and the central axes of the upper valve rod and the lower valve rod penetrate through the center of the sphere.
The utility model discloses in, go up the valve rod and link to each other with drive arrangement such as motor with lower valve rod simultaneously, drive valve rod and lower valve rod rotation simultaneously through drive arrangement to opening and closing of control ball valve. The utility model discloses in, go up the valve stem when rotating, can drive the cam rotation of valve stem lower extreme, because cam eccentric settings is at the lower extreme of last valve stem, the cam is when rotating, and the spheroid is close to or keeps away from the disk seat. When the dual-drive cam ball valve is in an opening state, the connecting channel is parallel to the input channel and the output channel, the connecting channel conducts the input channel and the output channel, the dual-drive cam ball valve is in an opening state, a medium can pass through the dual-drive cam ball valve, the ball body is located at a position far away from the valve seat, and a certain gap is formed between the ball body and the valve seat. When the ball body rotates to the closed state from the open state, the connecting channel rotates to the position vertical to the input channel and the output channel, the input channel and the output channel are disconnected, the dual-drive cam ball valve is in the closed state, and in the process, under the action of the cam, the ball body gradually approaches to one side of the valve seat until the ball body is in close contact with the valve seat, so that the sealing state is formed between the ball body and the valve seat. The utility model discloses in, the spheroid is when rotating, and the spheroid is not constantly with disk seat keep in contact, only when dual drive cam ball valve is in the off-state, just with disk seat in close contact with of spheroid to greatly reduced when the spheroid rotates and the disk seat between the friction, reduced the wearing and tearing to the disk seat, improved the life of disk seat.
Preferably, a first bearing is arranged in the upper shaft hole, a first sealing ring is arranged at one end of the first bearing, the upper valve rod simultaneously penetrates through the first bearing and the first sealing ring, and a first sealing ring is embedded on the inner ring surface of the first sealing ring; be provided with first clamp plate on the valve body, first clamp plate passes through first bolted connection on the valve body, and the one end of keeping away from first bearing on the first sealing ring supports with first clamp plate and leans on. The first sealing ring is arranged between the upper valve rod and the first sealing ring to play a sealing role.
Preferably, an inflatable sealing ring is arranged on the inner ring surface of the first sealing ring, a piston cavity is arranged on the first sealing ring, a piston is arranged in the piston cavity, an air cavity is formed between the piston and one end of the piston cavity, and a spring is arranged between the piston and one end of the piston cavity; one side of the piston, which faces the upper valve rod, is connected with a telescopic rod, a through hole corresponding to the telescopic rod is formed in the first sealing ring, the telescopic rod penetrates through the through hole, the front end of the telescopic rod abuts against the side face of the upper valve rod, and the air cavity is connected with the inflatable sealing ring through an air duct; the side surface of the upper valve rod is provided with an arc-shaped groove corresponding to the telescopic rod; when the upper valve rod rotates to the opening state from the closing state or rotates to the closing state from the opening state, the front end of the telescopic rod passes through the arc-shaped groove. The inflatable sealing ring plays a further sealing role. When the upper valve rod is in a closed state or an open state, the front end of the telescopic rod is abutted against the outer annular surface of the upper valve rod, the volume of the air cavity is minimum, the air in the air cavity is filled into the inflatable sealing ring, the inflatable sealing ring is in an expanded state, and the inflatable sealing ring is in sealing contact with the outer annular surface of the upper valve rod, so that a further sealing effect is achieved; when the upper valve rod rotates to the open state from the closed state or rotates to the closed state from the open state, the front end of the telescopic rod can pass through the arc-shaped groove, the front end of the telescopic rod firstly enters the arc-shaped groove from the outer annular surface of the upper valve rod and then returns to the outer annular surface of the upper valve rod after passing through the arc-shaped groove, in the process, when the front end of the telescopic rod enters the arc-shaped groove, the telescopic rod and the piston can extend forwards under the action of the spring, the volume of the air cavity is increased, and air in the inflatable sealing ring can be sucked into the air cavity, so that the inflatable sealing ring is in a deflated state, and the inflatable sealing ring is not expanded with the upper valve rod any more at the moment, so that the resistance of the upper valve rod during rotation is reduced, and meanwhile, the abrasion of the upper valve rod to the inflatable sealing ring during rotation is also reduced; when last valve rod rotated to open or when closing the state, the front end of telescopic link contacted with the outer anchor ring of last valve rod again after through the arc recess this moment, and the inflatable seal circle resumes to the expanded state this moment to realize sealed effect. In the utility model, when the valve rod is in the opening and closing state and does not rotate, the inflatable sealing ring is in the expansion state, thereby having good sealing effect; when the upper valve rod rotates to the opening state from the closing state or rotates to the closing state from the opening state, the inflatable sealing ring is in the flat state, so that the resistance of the upper valve rod during rotation is reduced, and meanwhile, the abrasion of the upper valve rod to the inflatable sealing ring during rotation is also reduced.
Preferably, the two ends of the bottom of the arc-shaped groove and the outer annular surface of the upper valve rod are transited through inclined planes. The two ends of the bottom of the arc-shaped groove and the outer annular surface of the upper valve rod are in transition through the inclined surface, so that the front end of the telescopic rod can smoothly pass through the arc-shaped groove.
Preferably, a second bearing is arranged in the lower shaft hole, a second sealing ring is arranged at one end of the second bearing, the lower valve rod simultaneously penetrates through the second bearing and the second sealing ring, and a second sealing ring is embedded on the inner ring surface of the second sealing ring; the valve body is provided with a second pressing plate, the second pressing plate is connected to the valve body through a second bolt, and one end, far away from the second bearing, of the second sealing ring is abutted to the second pressing plate.
Preferably, the first bearing is a ball bearing.
Preferably, the first bearing is a sliding bearing.
The utility model has the advantages that: the utility model discloses effectively reduced the spheroid when rotating and the disk seat between the friction, reduced the wearing and tearing to the disk seat, improved the life of disk seat.
Drawings
FIG. 1 is a cross-sectional view of a dual drive cam ball valve in an open state.
FIG. 2 is a cross-sectional view of a dual drive cam ball valve in the closed position.
Fig. 3 is an enlarged view of a portion a of fig. 1.
Fig. 4 is an enlarged view of a portion b in fig. 1.
FIG. 5 is a front view of the upper valve stem.
Fig. 6 is a sectional view taken along the line a-a in fig. 5.
Fig. 7 is a sectional view taken in the direction B-B in fig. 5.
In the figure: 1. valve body, 2, input channel, 3, output channel, 4, spheroid, 5, connecting channel 6, the disk seat, 7, go up the valve rod, 8, first bearing, 9, first sealing ring, 10, first clamp plate, 11, first bolt, 12, lower valve rod, 13, the second bearing, 14, the second sealing ring, 15, the second clamp plate, 16, the second bolt, 17, the cam, 18, the connector, 19, first sealing washer, 20, inflatable seal circle, 21, the piston, 22, the air cavity, 23, the spring, 24, the telescopic link, 25, the air duct, 26, the second sealing washer, 27, the arc recess.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying drawings.
Example 1:
as shown in fig. 1 to 7, the double-drive cam ball valve comprises a valve body 1 and a ball body 4. An input channel 2 and an output channel 3 are respectively arranged on two sides of the valve body 1. A ball 4 is arranged between the inlet channel 2 and the outlet channel 3. The ball 4 is provided with a connecting channel 5, and the connecting channel 5 penetrates through the ball 4. The end of the output channel 3 close to the ball 4 is provided with a valve seat 6 which is matched with the ball 4. The valve seat 6 is annular. The valve seat 6 is made of nitrile rubber. The upper side and the lower side of the valve body 1 are respectively provided with an upper shaft hole and a lower shaft hole, and an upper valve rod 7 is rotatably connected in the upper shaft hole. A first bearing 8 is arranged in the upper shaft hole, a first sealing ring 9 is arranged at one end of the first bearing 8, the upper valve rod 7 simultaneously penetrates through the first bearing 8 and the first sealing ring 9, and a first sealing ring 19 is embedded on the inner annular surface of the first sealing ring 9. Be provided with first clamp plate 10 on the valve body 1, first clamp plate 10 passes through first bolt 11 to be connected on valve body 1, and the one end of keeping away from first bearing 8 on the first sealing ring 9 supports with first clamp plate 10 and leans on. The lower end of the upper valve rod 7 is eccentrically provided with a cam 17, and the ball 4 is provided with a cam groove corresponding to the cam 17, and the cam is connected in the cam groove. The cross section of the cam groove is slightly larger than that of the cam, so that the cam has certain relative movement space in the cam groove.
Lower shaft hole in the swivelling joint have lower valve rod 12, be provided with second bearing 13 in the lower shaft hole, the one end of second bearing 13 is provided with second sealing ring 14, second sealing ring 14 supports with second bearing 13 and leans on. The lower stem 12 passes through the second bearing 13 and the second sealing ring 14 at the same time, and the second sealing ring 16 is fitted on the inner annular surface of the second sealing ring 14. The valve body is provided with a second pressure plate 15, the second pressure plate 15 is connected to the valve body 1 through a second bolt 16, and one end, far away from the second bearing 13, of the second sealing ring 14 abuts against the second pressure plate 15. The upper end of lower valve rod 12 is provided with a connector 18, and sphere 4 is provided with a connecting groove corresponding to connector 18, and connector 18 is connected in the connecting groove. The connector 18 is in the form of a flat head. The cross-section of the connecting slot is slightly larger than the cross-section of the connecting head 18 so that the connecting head 18 has a certain relative play in the connecting slot. The upper valve rod 7 and the lower valve rod 12 are coaxially arranged, and the central axes of the upper valve rod 7 and the lower valve rod 7 penetrate through the center of the sphere 4. In the present embodiment, the first bearing 8 and the second bearing 13 are both ball bearings.
An air inflation sealing ring 20 is arranged on the inner ring surface of the first sealing ring, and the air inflation sealing ring 20 is arranged on the outer side of the circumference of the upper valve rod 7 in a surrounding mode. A piston cavity is arranged on the first sealing ring 9, a piston 21 is arranged in the piston cavity, an air cavity 22 is formed between the piston 21 and one end of the piston cavity, and a spring 23 is arranged between the piston 21 and one end of the piston cavity. One side of the piston 21, which faces the upper valve rod 7, is connected with an expansion rod 24, a through hole corresponding to the expansion rod 24 is formed in the first sealing ring 9, the expansion rod 24 penetrates through the through hole, and the front end of the expansion rod 24 abuts against the side face of the upper valve rod. The air chamber 22 is connected with the inflatable sealing ring 20 through an air duct 25. The side of the upper valve stem 7 is provided with an arc-shaped groove 27 corresponding to the telescopic rod 24. The width of the arc-shaped groove 27 is larger than the diameter of the telescopic rod 24. The two ends of the bottom of the arc-shaped groove 27 are in transition with the outer annular surface of the upper valve rod 7 through inclined planes. When the upper valve rod rotates to the opening state from the closing state or rotates to the closing state from the opening state, the front end of the telescopic rod passes through the arc-shaped groove. The inflatable sealing ring plays a further sealing role. When the upper valve rod is in a closed state or an open state, the front end of the telescopic rod is abutted against the outer annular surface of the upper valve rod, the volume of the air cavity is minimum, the air in the air cavity is filled into the inflatable sealing ring, the inflatable sealing ring is in an expanded state, and the inflatable sealing ring is in sealing contact with the outer annular surface of the upper valve rod, so that a further sealing effect is achieved; when the upper valve rod rotates to the open state from the closed state or rotates to the closed state from the open state, the front end of the telescopic rod can pass through the arc-shaped groove, the front end of the telescopic rod firstly enters the arc-shaped groove from the outer annular surface of the upper valve rod and then returns to the outer annular surface of the upper valve rod after passing through the arc-shaped groove, in the process, when the front end of the telescopic rod enters the arc-shaped groove, the telescopic rod and the piston can extend forwards under the action of the spring, the volume of the air cavity is increased, and air in the inflatable sealing ring can be sucked into the air cavity, so that the inflatable sealing ring is in a deflated state, and the inflatable sealing ring is not expanded with the upper valve rod any more at the moment, so that the resistance of the upper valve rod during rotation is reduced, and meanwhile, the abrasion of the upper valve rod to the inflatable sealing ring during rotation is also reduced; when last valve rod rotated to open or when closing the state, the front end of telescopic link contacted with the outer anchor ring of last valve rod again after through the arc recess this moment, and the inflatable seal circle resumes to the expanded state this moment to realize sealed effect. In the utility model, when the valve rod is in the opening and closing state and does not rotate, the inflatable sealing ring is in the expansion state, thereby having good sealing effect; when the upper valve rod rotates to the opening state from the closing state or rotates to the closing state from the opening state, the inflatable sealing ring is in the flat state, so that the resistance of the upper valve rod during rotation is reduced, and meanwhile, the abrasion of the upper valve rod to the inflatable sealing ring during rotation is also reduced.
The utility model discloses in, go up the valve rod and link to each other with drive arrangement such as motor with lower valve rod simultaneously, drive valve rod and lower valve rod rotation simultaneously through drive arrangement to opening and closing of control ball valve. The utility model discloses in, go up the valve stem when rotating, can drive the cam rotation of valve stem lower extreme, because cam eccentric settings is at the lower extreme of last valve stem, the cam is when rotating, and the spheroid is close to or keeps away from the disk seat during meeting. When the dual-drive cam ball valve is in an opening state, the connecting channel is parallel to the input channel and the output channel, the connecting channel conducts the input channel and the output channel, the dual-drive cam ball valve is in an opening state, a medium can pass through the dual-drive cam ball valve, the ball body is located at a position far away from the valve seat, and a certain gap is formed between the ball body and the valve seat. When the ball body rotates to the closed state from the open state, the connecting channel rotates to the position where the input channel and the output channel are vertical, the input channel and the output channel are disconnected, the dual-drive cam ball valve is in the closed state, and in the process, under the action of the cam, the ball body gradually approaches to one side of the valve seat until the ball body is in close contact with the valve seat, so that the sealing state is formed between the ball body and the valve seat. The utility model discloses in, the spheroid is when rotating, and the spheroid is not constantly with disk seat keep in contact, only when dual drive cam ball valve is in the off-state, just with disk seat in close contact with of spheroid to greatly reduced when the spheroid rotates and the disk seat between the friction, reduced the wearing and tearing to the disk seat, improved the life of disk seat.
Example 2:
example 2 differs from example 1 in that: in embodiment 2, the first bearing 8 and the second bearing 13 are both sliding bearings, and the rest of the structure is the same as that of embodiment 1.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.
Claims (7)
1. The utility model provides a dual drive cam ball valve, includes valve body, spheroid, is provided with input channel and output channel on the valve body, and the spheroid setting is provided with interface channel between input channel and output channel on the spheroid, and interface channel runs through the spheroid, is close to spheroidal one end on the output channel and is provided with the disk seat with spheroid matched with, its characterized in that: the upper side and the lower side of the valve body are respectively provided with an upper shaft hole and a lower shaft hole, an upper valve rod is rotatably connected in the upper shaft hole, the lower end of the upper valve rod is eccentrically provided with a cam, a ball body is provided with a cam groove corresponding to the cam, and the cam is connected in the cam groove; a lower valve rod is rotatably connected in the lower shaft hole, a connector is arranged at the upper end of the lower valve rod, a connecting groove corresponding to the connector is arranged on the ball body, and the connector is connected in the connecting groove; the upper valve rod and the lower valve rod are coaxially arranged, and the central axes of the upper valve rod and the lower valve rod penetrate through the center of the sphere.
2. The dual-drive cam ball valve according to claim 1, wherein a first bearing is arranged in the upper shaft hole, a first sealing ring is arranged at one end of the first bearing, the upper valve stem simultaneously passes through the first bearing and the first sealing ring, and a first sealing ring is embedded on the inner annular surface of the first sealing ring; be provided with first clamp plate on the valve body, first clamp plate passes through first bolted connection on the valve body, and the one end of keeping away from first bearing on the first sealing ring supports with first clamp plate and leans on.
3. A dual-drive cam ball valve according to claim 2, wherein an inflation seal ring is arranged on the inner annular surface of the first seal ring, a piston cavity is arranged on the first seal ring, a piston is arranged in the piston cavity, an air cavity is formed between the piston and one end of the piston cavity, and a spring is arranged between the piston and one end of the piston cavity; one side of the piston, which faces the upper valve rod, is connected with a telescopic rod, a through hole corresponding to the telescopic rod is formed in the first sealing ring, the telescopic rod penetrates through the through hole, the front end of the telescopic rod abuts against the side face of the upper valve rod, and the air cavity is connected with the inflatable sealing ring through an air duct; the side surface of the upper valve rod is provided with an arc-shaped groove corresponding to the telescopic rod; when the upper valve rod rotates to the opening state from the closing state or rotates to the closing state from the opening state, the front end of the telescopic rod passes through the arc-shaped groove.
4. A dual drive cam ball valve according to claim 3, wherein both ends of the bottom of the arc-shaped groove are transited to the outer circumferential surface of the upper stem by means of a slope.
5. The dual-drive cam ball valve according to claim 1, wherein a second bearing is arranged in the lower shaft hole, a second sealing ring is arranged at one end of the second bearing, the lower valve rod simultaneously penetrates through the second bearing and the second sealing ring, and a second sealing ring is embedded on the inner annular surface of the second sealing ring; the valve body is provided with a second pressing plate, the second pressing plate is connected to the valve body through a second bolt, and one end, far away from the second bearing, of the second sealing ring is abutted to the second pressing plate.
6. The dual drive cam ball valve of claim 2, wherein the first bearing is a ball bearing.
7. The dual drive cam ball valve of claim 2, wherein said first bearing is a sliding bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022359551.0U CN213954409U (en) | 2020-10-21 | 2020-10-21 | Double-drive cam ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022359551.0U CN213954409U (en) | 2020-10-21 | 2020-10-21 | Double-drive cam ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954409U true CN213954409U (en) | 2021-08-13 |
Family
ID=77204436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022359551.0U Active CN213954409U (en) | 2020-10-21 | 2020-10-21 | Double-drive cam ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954409U (en) |
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2020
- 2020-10-21 CN CN202022359551.0U patent/CN213954409U/en active Active
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