CN213145431U

CN213145431U - Ball valve rod

Info

Publication number: CN213145431U
Application number: CN202021467200.5U
Authority: CN
Inventors: 殷季轩; 殷晓辉; 季佳钰
Original assignee: Nantong Libang Machinery Co ltd
Current assignee: Nantong Libang Machinery Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-05-07
Anticipated expiration: 2030-07-22

Abstract

The utility model discloses a ball valve rod, which comprises a valve rod body, a valve rod, a stop ring and a limiting cylinder, wherein the valve rod body comprises a valve rod and a stop ring which can be sleeved on the valve rod; a limiting cylinder is arranged below the stop ring; the limiting cylinder is sleeved outside the valve rod; the inner side of the limiting cylinder is provided with a sliding chute; the outer side of the valve rod is provided with a sliding block which is matched with the sliding groove; the stop ring comprises a ring body for inserting the valve rod and limiting feet symmetrically arranged on the side surface of the ring body; the two limiting feet are perpendicular to the ring body; the limiting foot is matched with the ball valve body to stop the valve rod at a preset position; the valve rod comprises a linkage section and a fixing section, wherein the linkage section is used for being linked with the valve driving mechanism, and the fixing section is used for being in contact connection with the valve ball. The utility model discloses not only can effectively reduce the wearing and tearing of valve ball, can play sealed and isolation between valve body and valve ball, practice thrift the cost of using the valve, have the anticreep valve rod structure moreover, use safelyr, have extensive suitability.

Description

Ball valve rod

Technical Field

The utility model relates to a valve rod especially relates to a ball valve rod.

Background

The ball valve refers to a valve which uses a ball body with a circular through hole as an opening and closing part and rotates along with a valve rod to realize opening and closing actions. Ball valves are used in pipelines primarily to shut off, distribute and change the direction of flow of media. The valve has one steel ball with hole, smooth surface, PTFE sealing parts on two sides, circular arc surface in the contact part, and sealing effect via the pressing of the valve body with screw bolt or nut. When the valve is opened, the hole on the ball body is parallel to the axial lead of the valve to form a channel; when the valve is closed, the ball body is rotated by 90 degrees through the handle, and the channel is blocked.

Existing ball valves typically include a valve body, a valve stem, a valve seat, and a valve ball (a steel ball with a hole). The valve body is provided with a liquid flow channel and an installation channel, the liquid flow channel is intersected with the installation channel, the valve ball is arranged at the intersection of the liquid flow channel and the installation channel, the center of the valve ball is provided with a through hole with the diameter matched with that of the liquid flow channel, the valve rod penetrates through the installation channel, one end of the valve rod is in linkage connection with the valve ball, the other end of the valve rod is usually connected with a driving mechanism which drives the valve rod to axially rotate, such as a wrench and the like or a handle and the like, the valve seat is arranged between the valve. The upper part of the valve ball usually generates friction with the valve seat in the process of switching on and off liquid flow, the upper part of the valve ball is abraded or worn out to a great extent in time, the whole sealing performance and the service life of the valve are correspondingly reduced, the valve ball can only be replaced in order to ensure the normal use of the valve, but the valve ball is large in size, time-consuming in processing and large in cost waste; and traditional ball valve device does not have anticreep valve rod structure, and the valve rod breaks away from the disk seat easily in the use owing to need rotate in the use for this device has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a ball valve rod.

In order to solve the technical problem, the utility model discloses a technical scheme is: a ball valve rod comprises a valve rod body, a valve rod, a stop ring and a limiting cylinder, wherein the valve rod body comprises a valve rod and a stop ring which can be sleeved outside the valve rod; a limiting cylinder is arranged below the stop ring; the limiting cylinder is sleeved outside the valve rod; the inner side of the limiting cylinder is provided with a sliding chute; the outer side of the valve rod is provided with a sliding block which is matched with the sliding groove;

the stop ring comprises a ring body for inserting the valve rod and limiting feet symmetrically arranged on the side surface of the ring body; the two limiting feet are perpendicular to the ring body; the limiting foot is matched with the ball valve body to stop the valve rod at a preset position;

the valve rod comprises a linkage section and a fixing section, wherein the linkage section is used for being linked with the valve driving mechanism, and the fixing section is used for being in contact connection with the valve ball; the fixed section comprises a connecting handle clamped with the valve ball and an isolation cover for covering the upper part of the valve ball; the isolation cover is a hollow hemispherical shape; the connecting handle is fixedly connected with the concave hollow part of the isolation cover; the linkage section is detachably connected with the isolation cover.

Furthermore, a connecting boss is convexly arranged at the top point of the outer wall of the isolation cover; the linkage section is detachably connected with the connecting boss; the connecting handle is fixedly connected with the top point of the inner wall of the isolation cover.

Furthermore, the other end of the connecting boss, which is opposite to the isolation cover, is provided with a connecting hole; an internal thread is arranged in the connecting hole; one end of the linkage section, which is used for being connected with the connecting boss, is provided with an inserting boss which is used for being in threaded connection with the connecting hole.

Further, the connecting handle comprises an embedding part, a clamping part and a contact part which are integrally arranged in sequence; the outer diameter of the embedding part is larger than that of the clamping part and smaller than that of the abutting part; the contact part is fixedly connected with the top point of the inner wall of the isolation cover.

Further, the ring body is oblong, and an external thread is arranged on the arc portion of the ring body.

Furthermore, the sliding block is of an arc-shaped structure, and the sliding block and the sliding groove form a sliding structure.

The utility model discloses not only can effectively reduce the wearing and tearing of valve ball, can play sealed and isolation between valve body and valve ball, practice thrift the cost of using the valve, have the anticreep valve rod structure moreover, use safelyr, have extensive suitability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a bonnet; 2. a valve stem; 4. a limiting pin; 5. a stopper ring; 6. a limiting cylinder; 7. a valve ball; 8. a valve body; 21. a connecting handle; 22. an isolation cover; 23. and a linkage section.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The valve rod of the ball valve shown in fig. 1 comprises a valve rod body, a valve rod 2, a stop ring 5 and a limiting cylinder 6, wherein the valve rod body comprises the valve rod 2 and the stop ring 5 which can be sleeved outside the valve rod 2; a limiting cylinder 6 is arranged below the stop ring 5; the limiting cylinder 6 is sleeved outside the valve rod 2; the inner side of the limiting cylinder 6 is provided with a sliding chute; the outer side of the valve rod 2 is provided with a sliding block which is matched with the sliding chute; the slide block is in an arc-shaped structure, and the slide block and the sliding groove form a sliding structure. Valve rod 2 passes through the slider and slides inside the spout, can carry on spacingly to the rotation process of valve rod 2, avoids valve rod 2 to break away from ball valve device in the use, improves ball valve device's security.

The stop ring 5 comprises a ring body into which the valve rod 2 is inserted and limiting feet 4 symmetrically arranged on the side surface of the ring body; the two limiting feet 4 are perpendicular to the ring body; the limiting foot 4 is matched with the ball valve body to stop the valve rod 2 at a preset position; the ring body is oblong, and the arc part of the ring body is provided with external threads. The stop ring 5 is limited in the valve cap 1 in a circumferential direction in a rotatable manner; the inner wall of valve cap 1 is equipped with the internal thread, and the periphery of retaining ring 5 is equipped with the external screw thread of looks adaptation, and the inner wall of valve cap 1 is equipped with the spacing groove, and retaining ring 5 gets into the spacing inslot after screwing in 1 predetermined distance of valve cap to realize that circumference can be changeably spacing in valve cap 1, valve rod 2 is covered with valve cap 1 outward. Because the stop ring 5 is limited in the valve cap 1, the stop ring 5 is installed after the position of the valve rod 2 is adjusted, or when the stop ring 5 is taken out during disassembly and maintenance, the valve cap 1 is assembled and disassembled, namely, the stop ring 5 is assembled and disassembled at the same time, so that the assembly and disassembly process can be simplified, and the stop ring 5 is limited in the valve cap 1 and is not easy to lose and forget to assemble. Meanwhile, the stop ring 5 can rotate freely in the bonnet 1, so that the stop position adjustment of the stop ring 5 and the assembling and disassembling actions of the bonnet 1 do not interfere with each other.

The valve rod 2 comprises a linkage section 23 for linkage with the valve driving mechanism and a fixing section for contact connection with the valve ball 7; the fixed section comprises a connecting handle 21 used for being clamped with the valve ball 7 and a separation cover 22 used for covering the upper part of the valve ball 7; the isolation cover 22 is a hollow semispherical shape; the connecting handle 21 is fixedly connected with the concave hollow part of the isolation cover 22; the linkage section 23 is detachably connected to the shield 22.

The valve rod body is divided into a linkage section 23 and a fixed section, the two parts respectively play roles of linkage and fixation, the fixed section is provided with an isolation cover 22 for covering the valve ball 7, the contact area of the valve ball 7 and the valve rod 2 is enlarged, when the valve driving mechanism drives the valve ball 7 through the linkage section 23, the outer surface of the upper part of the valve ball 7 is prevented from directly contacting with the valve body 8 due to the blocking of the isolation cover 22, the abrasion of the valve ball 7 is effectively reduced, moreover, the isolation cover 22 can play a role in sealing and isolating between the valve body 8 and the valve ball 7, the liquid flowing through the liquid flow channel is prevented from flowing to the linkage section 23, and the whole sealing performance of the valve is enhanced; the fixed section is detachably connected with the isolation cover 22, so that the isolation cover 22 is worn away or the isolation cover 22 is damaged in the using process of the valve rod 2, the valve rod can be directly used after being replaced with a new isolation cover 22, compared with the conventional valve rod, the valve ball 7 is directly contacted with the valve body 8 and then worn, the cost for replacing the valve ball 7 is higher, and the cost for replacing the isolation cover 22 is more saved.

The top point of the outer wall of the isolation cover 22 is convexly provided with a connecting boss, so that the balance degree of the valve rod 2 and the valve ball 7 during connection can be effectively ensured, and the valve rod 2 and the valve ball 7 can be stably driven; the linkage section 23 is detachably connected with the connecting boss; the connecting handle 21 is fixedly connected with the peak of the inner wall of the isolation cover 22. The isolation cover 22 is formed into a hollow hemispherical shape, so that the isolation cover is more adaptive to the shape of the valve ball 7, can more fully cover the upper part of the valve ball 7, and preferably prevents the valve ball 7 from being abraded.

The other end of the connecting boss opposite to the isolation cover 22 is provided with a connecting hole; an internal thread is arranged in the connecting hole; one end of the linkage section 23, which is used for being connected with the connecting boss, is provided with an inserting boss which is used for being in threaded connection with the connecting hole. Of course, the other end of the connecting boss opposite to the isolation cover 22 may also be provided with an external thread, and one end of the linkage section 23, which is used for being connected with the connecting boss, is provided with a threaded hole for being in threaded connection with the connecting boss. Therefore, the linkage section 23 and the isolation cover 22 are connected through threads, transmission can be more convenient, threads are easy to process, processing and using are more convenient, and replacement of a new isolation cover 42 is more convenient.

The connecting handle 21 comprises an embedding part, a clamping part and a contact part which are integrally arranged in sequence; the outer diameter of the embedding part is larger than that of the clamping part and smaller than that of the abutting part; the abutting portion is fixedly connected with the vertex of the inner wall of the isolation cover 22. Set up conflict portion and be used for contradicting valve ball 7 and cage 22, set up joint portion and let can have more firm connection between valve ball 7 and the cage 22, the difference that sets up the external diameter between embedding portion, joint portion and the conflict portion can play good antiskid and prevent that cage 22 from breaking away from the purpose of being connected with valve ball 7.

The utility model discloses not only remove direct and valve body contact from, the effectual wearing and tearing that have reduced the valve ball have strengthened the holistic leakproofness of valve moreover, practice thrift the cost more, through setting up anticreep valve rod structure, carry on spacingly to the rotation process of valve rod simultaneously for the valve rod can not reciprocate on the perpendicular, thereby can avoid the valve rod to break away from the disk seat. In addition, the ball valve is simple in structure and convenient to use, and can be widely applied to various ball valves.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a ball valve rod, includes the valve rod body, its characterized in that: the valve rod body comprises a valve rod (2) and a stop ring (5), wherein the stop ring (5) can be sleeved outside the valve rod (2); a limiting cylinder (6) is arranged below the stop ring (5); the limiting cylinder (6) is sleeved outside the valve rod (2); a sliding groove is arranged on the inner side of the limiting cylinder (6); a sliding block matched with the sliding groove is arranged on the outer side of the valve rod (2);

the stop ring (5) comprises a ring body into which the valve rod (2) is inserted and limiting feet (4) symmetrically arranged on the side surface of the ring body; the number of the limiting feet (4) is two, and the two limiting feet are perpendicular to the ring body; the limiting foot (4) is matched with the ball valve body to stop the valve rod (2) at a preset position;

the valve rod (2) comprises a linkage section (23) used for being linked with the valve driving mechanism and a fixing section used for being in contact connection with the valve ball (7); the fixing section comprises a connecting handle (21) clamped with the valve ball (7) and an isolation cover (22) for covering the upper part of the valve ball (7); the isolation cover (22) is hollow and hemispherical; the connecting handle (21) is fixedly connected with the concave hollow part of the isolation cover (22); the linkage section (23) is detachably connected with the isolation cover (22).

2. A ball valve stem according to claim 1, wherein: a connecting boss is convexly arranged at the top point of the outer wall of the isolation cover (22); the linkage section (23) is detachably connected with the connecting boss; the connecting handle (21) is fixedly connected with the top point of the inner wall of the isolation cover (22).

3. A ball valve stem according to claim 2, wherein: the other end of the connecting boss, which is opposite to the isolation cover (22), is provided with a connecting hole; an internal thread is formed in the connecting hole; and one end of the linkage section (23) used for being connected with the connecting boss is provided with an inserting boss used for being in threaded connection with the connecting hole.

4. A ball valve stem according to claim 3, wherein: the connecting handle (21) comprises an embedding part, a clamping part and a contact part which are integrally arranged in sequence; the outer diameter of the embedding part is larger than that of the clamping part and smaller than that of the abutting part; the collision part is fixedly connected with the top point of the inner wall of the isolation cover (22).

5. The ball valve stem of claim 4, wherein: the ring body is oblong, and an external thread is arranged on the arc portion of the ring body.

6. The ball valve stem of claim 5, wherein: the sliding block is of an arc-shaped structure, and the sliding block and the sliding groove form a sliding structure.