CN214274553U - Fixed ball valve with adjustable lower valve rod - Google Patents
Fixed ball valve with adjustable lower valve rod Download PDFInfo
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- CN214274553U CN214274553U CN202120007994.5U CN202120007994U CN214274553U CN 214274553 U CN214274553 U CN 214274553U CN 202120007994 U CN202120007994 U CN 202120007994U CN 214274553 U CN214274553 U CN 214274553U
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- valve rod
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- adjusting nut
- rod
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Abstract
A fixed ball valve with an adjustable lower valve rod. The method is characterized in that: the bottom of the valve body is provided with a central hole which is coaxial with the lower valve rod, an adjusting assembly is arranged in the central hole, the adjusting assembly comprises an ejector rod, an adjusting nut and a check nut, the top of the ejector rod is in contact with the bottom of the lower valve rod, a sealing ring which is in seal fit with the central hole is arranged on the outer ring of the ejector rod, the top of the adjusting nut is in contact with the bottom of the ejector rod and is in threaded fit with the central hole, and the top of the check nut is in contact with the bottom of the adjusting nut and is in threaded fit with the central hole. The adjusting device has the advantages that 1, the distance adjustment of the lower valve rod is realized by pushing the ejector rod through the adjusting nut, and the adjusting space is large; 2. a sealing ring is arranged between the ejector rod and the central hole to ensure sealing, so that online adjustment can be realized, pressure relief is not needed, and the operation is convenient; 3. set up locknut and ensure that adjusting nut can not become flexible because of the screw thread that produces in the valve use, stable in structure is reliable.
Description
Technical Field
The utility model relates to a ball valve, concretely relates to fixed ball valve with adjustable lower valve rod.
Background
Ball valve (ball valve) refers to a valve in which the opening and closing member is a ball, and is driven by a valve rod and rotates around the axis of the ball valve, and the valve can be used for regulating and controlling fluid. Wherein, the spheroid of fixed ball valve is fixed, and the disk seat can float to can keep sealed with the spheroid laminating.
In order to keep the ball fixed, the bottom of the ball is usually supported by a lower stem, through which the position of the ball needs to be adjusted in order to ensure a reliable seal between the ball and the seat.
However, in the existing ball valve, the thrust pad is pushed by the lower valve rod to be adjusted, the adjusted compression amount is very small, the adjustment is very accurate and cannot be finely adjusted, the machining deviation of the lower valve rod and the bottom cover is too high, so that the ball body is easily caused to fall down without being well supported, or the ball body is over-headed by the top of the valve rod, so that the ball body and the valve seat are scratched, and further leakage is caused. In addition, because the leakage that results from the cooperation problem that lower valve rod, bottom, spheroid produced must the pressure release, demolish bottom and lower valve rod again, lead to the waste of time, be unfavorable for online adjustment maintenance.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides a fixed ball valve with adjustable lower valve rod.
The utility model discloses the technical scheme who adopts: a fixed ball valve with an adjustable lower valve rod comprises a valve body, a ball body, a valve seat, an upper valve rod and a lower valve rod, wherein the ball body is arranged in the valve body; the valve body bottom is equipped with the centre bore with the coaxial setting of lower valve rod, be equipped with adjusting part in the centre bore, adjusting part includes ejector pin, adjusting nut, lock nut, the top of ejector pin supports with the bottom contact of lower valve rod, and the ejector pin outer lane is equipped with the sealing washer with the sealed complex of centre bore inner wall, adjusting nut's top supports with the bottom contact of ejector pin to with centre bore screw-thread fit, lock nut's top and adjusting nut's bottom contact to with centre bore screw-thread fit.
The spheroid lower extreme is equipped with the mounting groove, the lower valve rod stretches into the mounting groove, be equipped with the thrust pad down between valve rod top and the mounting groove, the cover is equipped with the bush down between valve rod outer lane and the mounting groove inner wall.
The central hole sequentially comprises a first guide hole, a second guide hole, a first threaded hole and a second threaded hole from top to bottom; the lower end of the lower valve rod is matched with the first guide hole and extends into the first guide hole, the ejector rod is matched with the second guide hole and is arranged in the second guide hole, the adjusting nut is matched with the first threaded hole, and the anti-loose nut is matched with the second threaded hole.
The diameter of the second guide hole is smaller than that of the first guide hole, and the upper end of the ejector rod extends into the first guide hole.
The diameter of the first threaded hole is larger than that of the second guide hole, a cylindrical boss matched with the second guide hole is formed at the upper end of the adjusting nut, and the cylindrical boss extends into the second guide hole to be supported by the bottom of the ejector rod in a contact mode.
The diameter of second screw hole is greater than the diameter of first screw hole, locknut top is formed with round platform type boss, round platform type boss upper end stretches into first screw hole and adjusting nut's bottom contact support, just be equipped with sealed fire collar between the lateral wall of round platform type boss and the second screw hole.
The utility model has the advantages that: by adopting the scheme, 1, the distance of the lower valve rod is adjusted by pushing the ejector rod through the adjusting nut, and the adjusting space is large; 2. a sealing ring is arranged between the ejector rod and the central hole to ensure sealing, so that online pressure adjustment can be realized, pressure relief is not needed, and the operation is convenient; 3. set up locknut and ensure that adjusting nut can not become flexible because of the screw thread that produces in the valve use, stable in structure is reliable.
Drawings
Fig. 1 is the embodiment of the present invention provides a schematic structural view of a fixed ball valve with an adjustable lower valve rod.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, a fixed ball valve with adjustable lower valve rod, includes valve body 1, spheroid 2, disk seat 3, goes up valve rod 4, lower valve rod 5, spheroid 2 sets up in valve body 1, disk seat 3 sets up between spheroid 2 and valve body 1 to with the sealed cooperation of spheroid 2, it stretches into valve body 1 and is connected with 2 upper ends of spheroid to go up valve rod 4 one end, and operation final controlling element is connected to the other end, lower valve rod 5 sets up at 2 lower extremes of spheroid and supports spheroid 2.
2 lower extremes of spheroid are equipped with mounting groove 21, lower valve rod 5 stretches into mounting groove 21, be equipped with thrust washer 7 between lower valve rod 5 top and the mounting groove 21, the cover is equipped with bush 8 between lower valve rod 5 outer lane and the 21 inner walls of mounting groove.
1 bottom of valve body is equipped with the centre bore 9 with the coaxial setting of lower valve rod 5, be equipped with adjusting part 6 in the centre bore 9, centre bore 9 is from last to including first guiding hole 91, second guiding hole 92, first screw hole 93, second screw hole 94 down in proper order, adjusting part 6 is including ejector pin 61, adjusting nut 62, the lock nut 63 that sets gradually.
The diameter of the second guide hole 92 is smaller than that of the first guide hole 91, the upper end of the ejector rod 61 extends into the first guide hole 91 to be supported by the bottom of the lower valve rod 5 in a contact manner, and the outer ring of the ejector rod 61 is provided with a sealing ring 64 in sealing fit with the inner wall of the second guide hole 92.
The diameter of first screw hole 93 is greater than the diameter of second guiding hole 92, adjusting nut 62 upper end is formed with the cylinder type boss 621 with second guiding hole 92 adaptation, cylinder type boss 621 stretches into the bottom contact support of second guiding hole 92 and ejector pin 61, be formed with certain regulation clearance between adjusting nut 62 upper end and the second guiding hole 92 bottom.
The diameter of second screw hole 94 is greater than the diameter of first screw hole 93, locknut 63 top is formed with round platform type boss 631, the bottom contact support that first screw hole 93 and adjusting nut 62 were stretched into to round platform type boss 631 upper end, just be equipped with sealed fire collar 65 between the lateral wall of round platform type boss 631 and second screw hole 94.
By adopting the scheme, the ejector rod 61 can be pushed by the adjusting nut 62 to realize the distance adjustment of the lower valve rod 5, and the adjusting space is larger; 2. a sealing ring is arranged between the ejector rod 61 and the inner wall of the second guide hole 92 to ensure sealing, so that online pressure adjustment can be realized, pressure relief is not needed, and the operation is convenient; 3. set up lock nut 63 and sealed fire prevention ring 65, ensure that adjusting nut 62 can not become flexible because of the screw thread that produces in the valve use, this structure has played fire prevention, sealed, locking effect simultaneously, and stable in structure is reliable.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (6)
1. A fixed ball valve with an adjustable lower valve rod comprises a valve body (1), a ball body (2), a valve seat (3), an upper valve rod (4) and a lower valve rod (5), wherein the ball body (2) is arranged in the valve body (1), the valve seat (3) is arranged between the ball body (2) and the valve body (1) and is in sealing fit with the ball body (2), the upper valve rod (4) is connected with the upper end of the ball body (2), and the lower valve rod (5) is arranged at the lower end of the ball body (2) and supports the ball body (2);
the method is characterized in that: valve body (1) bottom is equipped with centre bore (9) with lower valve rod (5) coaxial setting, be equipped with adjusting part (6) in centre bore (9), adjusting part (6) include ejector pin (61), adjusting nut (62), locknut (63), the top of ejector pin (61) and the bottom contact of lower valve rod (5) support, and ejector pin (61) outer lane be equipped with centre bore (9) inner wall seal complex sealing washer (64), the top of adjusting nut (62) and the bottom contact of ejector pin (61) support to with centre bore (9) screw-thread fit, the top of locknut (63) and the bottom contact of adjusting nut (62) to with centre bore (9) screw-thread fit.
2. A fixed ball valve with an adjustable lower stem according to claim 1, wherein: spheroid (2) lower extreme is equipped with mounting groove (21), lower valve rod (5) stretch into mounting groove (21), be equipped with thrust pad (7) down between valve rod (5) top and mounting groove (21), the cover is equipped with bush (8) down between valve rod (5) outer lane and mounting groove (21) inner wall.
3. A fixed ball valve with an adjustable lower stem according to claim 1, wherein: the central hole (9) sequentially comprises a first guide hole (91), a second guide hole (92), a first threaded hole (93) and a second threaded hole (94) from top to bottom; lower valve rod (5) lower extreme and first guiding hole (91) looks adaptation and stretch into in first guiding hole (91), ejector pin (61) and second guiding hole (92) looks adaptation and set up in second guiding hole (92), adjusting nut (62) cooperate with first screw hole (93), locknut (63) cooperate with second screw hole (94).
4. A fixed ball valve with an adjustable lower stem according to claim 3, wherein: the diameter of the second guide hole (92) is smaller than that of the first guide hole (91), and the upper end of the ejector rod (61) extends into the first guide hole (91).
5. A fixed ball valve with an adjustable lower stem according to claim 3, wherein: the diameter of first screw hole (93) is greater than the diameter of second guiding hole (92), adjusting nut (62) upper end is formed with cylinder type boss (621) with second guiding hole (92) adaptation, cylinder type boss (621) stretch into the bottom contact support of second guiding hole (92) and ejector pin (61).
6. A fixed ball valve with an adjustable lower stem according to claim 3, wherein: the diameter of second screw hole (94) is greater than the diameter of first screw hole (93), locknut (63) top is formed with round platform type boss (631), the bottom contact support of first screw hole (93) and adjusting nut (62) is stretched into to round platform type boss (631) upper end, just be equipped with sealed fire prevention circle (65) between the lateral wall of round platform type boss (631) and second screw hole (94).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120007994.5U CN214274553U (en) | 2021-01-05 | 2021-01-05 | Fixed ball valve with adjustable lower valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120007994.5U CN214274553U (en) | 2021-01-05 | 2021-01-05 | Fixed ball valve with adjustable lower valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214274553U true CN214274553U (en) | 2021-09-24 |
Family
ID=77790506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120007994.5U Active CN214274553U (en) | 2021-01-05 | 2021-01-05 | Fixed ball valve with adjustable lower valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214274553U (en) |
-
2021
- 2021-01-05 CN CN202120007994.5U patent/CN214274553U/en active Active
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