CN210661456U

CN210661456U - Ball valve

Info

Publication number: CN210661456U
Application number: CN201921572035.7U
Authority: CN
Inventors: 蒋灵会; 肖小勇
Original assignee: Zhejiang Xinfan Heating Ventilation Intelligent Control Co ltd
Current assignee: Zhejiang Xinfan Heating Ventilation Intelligent Control Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-02
Anticipated expiration: 2029-09-20

Abstract

The utility model provides a ball valve belongs to valve manufacturing technical field. The ball valve solves the problems that the existing ball valve is not convenient to assemble and disassemble and has unsatisfactory sealing performance and the like. This ball valve includes the valve body, valve ball and valve rod, valve body one end threaded connection has the valve cap, be equipped with the loose joint pipe in the valve cap, the outer end of loose joint pipe stretches out the valve cap outside and the end of loose joint pipe outer end is equipped with the external screw thread that is used for connecting, the outer wall of loose joint pipe is equipped with the ring channel, be equipped with the sealing washer in the ring channel, the loose joint pipe outer wall is equipped with prevents that the sealing washer from connecting the time too tight and expanded anti-expansion structure, the inner wall of loose joint pipe has the rotation hole of constituteing by a plurality of cutting face. The utility model has the advantages of good sealing performance, convenient loading and unloading, etc.

Description

Ball valve

Technical Field

The utility model belongs to the technical field of the valve is made, a ball valve is related to.

Background

The ball valve is a valve in which an opening and closing member (a ball core) is driven by a valve rod and rotates around the axis of the valve rod, is widely applied to pipeline transportation in the fields of industry, agriculture, energy, daily life and the like, and is used for controlling connection or disconnection of a medium in a pipeline and flow of the medium in the pipeline.

For example, chinese patent literature discloses a ball cock valve [ application number: 201320107969. X; authorization notice number: CN203286088U ], which comprises a valve body with a cavity inside, a valve core is arranged in the valve body, a valve rod capable of controlling the action of the valve core is arranged on the valve body, a joint and an elbow are respectively arranged at two ends of the valve body, a nut is connected to the end part of the outer end of the joint through a thread, a union pipe is arranged inside the nut, a convex blocking edge is arranged inside the nut, a ring-shaped convex blocking shoulder is arranged at the side part of the inner end of the union pipe, the blocking shoulder is abutted against the blocking edge, the inner end of the union pipe is pressed at the port of the outer end of the joint under the action of the blocking edge.

The loose joint ball valve is convenient to adjust the direction and connect through the loose joint pipe, but the sealing effect of the loose joint pipe after connection is not ideal enough, and the assembly and disassembly are not convenient enough.

Disclosure of Invention

The utility model aims at providing a good, the convenient ball valve of loading and unloading of leakproofness to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a ball valve, includes valve body, valve ball and valve rod, the valve ball be located the valve body, the inner of valve rod be connected with the valve ball, the outer end of valve rod stretches out the valve body and is connected with the hand wheel, valve body one end threaded connection have the valve cap, the valve cap in be equipped with the loose joint pipe, valve cap outer end inner wall radial convex fender edge has, loose joint pipe inner have radial evagination keep off the shoulder, keep off the shoulder support and lean on keeping off on the edge and under the effect that keeps off the edge loose joint pipe inner pressed at valve cap outer end port department, the outer end of loose joint pipe stretch out the valve cap outside and loose joint pipe outer end tip is equipped with the external screw thread that is used for connecting, its characterized in that, the outer wall of loose joint pipe be equipped with the ring channel, the ring channel in be equipped with the sealing washer, the loose joint pipe outer wall be equipped with when preventing that, the inner wall of the movable connecting pipe is provided with a rotating hole consisting of a plurality of cutting surfaces, and the outer wall of the movable connecting pipe is provided with a plurality of contact planes.

The arrangement of the rotating hole and the contact plane in the ball valve facilitates the tool to extend into the movable connecting pipe or be directly clamped on the outer wall of the movable connecting pipe to drive the movable connecting pipe to rotate, so that the movable connecting pipe is convenient to mount and dismount, the mounting and dismounting time is reduced, and the maintenance is convenient; the sealing ring contacts with the inner wall of the valve or the pipeline connected with the movable connecting pipe in the ball valve, the expansion-proof structure prevents the sealing ring from being pressed too tightly and driven by the inner wall of the valve or the pipeline to expand and deform towards the inner side of the movable connecting pipe, and the sealing effect and the repeated service life of the sealing ring are ensured.

In the above ball valve, the expansion-preventing structure includes a ring of protruding ring axially protruding from the inner side wall of the annular groove, the inner end of the sealing ring abuts against the protruding ring, and the inner end of the sealing ring has a protruding shoulder axially protruding, the protruding shoulder is located at the inner side of the protruding ring, and the protruding shoulder abuts against the inner side wall of the annular groove.

In the above ball valve, the outer ring of the sealing ring has a conical surface, and the outer end of the sealing ring is an end part with a small diameter of the conical surface.

In foretell ball valve, the valve body include the valve gap that its one end is connected with, the outer end threaded connection of valve gap have the valve cap, the outer end of valve cap has the flaring that expands outward, the union pipe inner inlay and be equipped with the sealing ring, the sealing ring have the inclined plane of laminating in the flaring inner wall.

In the above ball valve, the rotation hole is a regular hexagonal inner hole, and the number of the contact planes is six and are circumferentially and uniformly distributed on the outer wall of the movable connecting pipe.

In the above ball valve, the bottom of the valve body is provided with a convex connecting part, the connecting part is provided with a through connecting hole, and the connecting hole is connected with a thermometer.

In the above ball valve, the other end of the valve body has an internal thread. The other end of the valve body is connected with the joint through an internal thread, so that the connection is convenient.

As another situation, in the above ball valve, the other end of the valve body is in threaded connection with a locking cap, a PPR adapter tube is arranged in the locking cap, a sealing gasket sealed at the end of the valve body is embedded at the inner end of the PPR adapter tube, the outer end of the PPR adapter tube extends out of the locking cap, the outer end of the locking cap is provided with a flange turned inwards, and the outer wall of the PPR adapter tube is provided with a convex rib which protrudes radially and is abutted against the inner side of the flange.

Compared with the prior art, the loose joint pipe in the ball valve is convenient to assemble and disassemble, convenient to maintain, capable of monitoring the temperature of the pipeline, convenient to connect, capable of avoiding deformation and expansion of the sealing ring, good in sealing effect and long in service life.

Drawings

Fig. 1 is a perspective view of the ball valve.

Fig. 2 is a structural sectional view of the ball valve.

Fig. 3 is an enlarged view of the structure of fig. 2 at circle a.

Fig. 4 is a structural sectional view of the present ball valve in embodiment 2.

In the figure, 1, a valve body; 11. a connecting portion; 12. connecting holes; 2. a valve ball; 3. a valve stem; 4. a hand wheel; 5. a valve cover; 6. a bonnet; 61. blocking edges; 7. a loose joint pipe; 71. a shoulder block; 72. rotating the hole; 73. a contact plane; 74. a convex ring; 8. a seal ring; 81. a shoulder is formed; 82. a conical surface; 9. a seal ring; 91. an inclined surface; 10. a thermometer; 13. a lock cap; 131. flanging; 14. a PPR pipe connection; 141. a rib is protruded; 15. and a gasket.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 1, 2 and 3, the ball valve comprises a valve body 1, a valve ball 2 and a valve rod 3, wherein the valve ball 2 is positioned in the valve body 1, the inner end of the valve rod 3 is connected with the valve ball 2, the outer end of the valve rod 3 extends out of the valve body 1 and is connected with a hand wheel 4, the valve body 1 comprises a valve cover 5 connected with one end of the valve body 1, the other end of the valve body 1 is provided with internal threads, the outer end of the valve cover 5 is in threaded connection with a valve cap 6, a loose joint pipe 7 is arranged in the valve cap 6, the inner wall of the outer end of the valve cap 6 is provided with a blocking edge 61 protruding in the radial direction, the inner end of the loose joint pipe 7 is provided with a blocking shoulder 71 protruding in the radial direction, the blocking shoulder 71 abuts against the blocking edge 61 and is under the action of the blocking edge 61, the inner end of the loose joint pipe 7 is pressed, the outer wall of the movable connecting pipe 7 is provided with an expansion-preventing structure for preventing the sealing ring 8 from being too tight and expanding when being connected, the inner wall of the movable connecting pipe 7 is provided with a rotating hole 72 consisting of a plurality of cutting surfaces, and the outer wall of the movable connecting pipe 7 is provided with a plurality of contact planes 73.

In a detailed description, the rotating hole 72 is a regular hexagon inner hole, the number of the contact planes 73 is six, and the contact planes are circumferentially and uniformly distributed on the outer wall of the movable connecting pipe 7, so that the operation of the existing tool (an open hexagon wrench, a movable spanner, an inner hexagon wrench and a caliper) is facilitated, the movable connecting pipe 7 can be driven to rotate by the tool from the inside or the outside of the movable connecting pipe 7, the movable connecting pipe 7 is convenient to mount and dismount, the mounting and dismounting time is shortened, and the maintenance is convenient.

The expansion-proof structure comprises a circle of convex rings 74 axially protruding out of the inner side groove wall of the annular groove, the inner end of the sealing ring 8 is abutted against the convex rings 74, the inner end of the sealing ring 8 is provided with a convex shoulder 81 axially protruding, the convex shoulder 81 is positioned on the inner side of the convex rings 74 and the convex shoulder 81 is abutted against the inner side groove wall of the annular groove, the convex rings 74 are supported at the inner side end parts of the sealing ring 8, and the convex shoulder 81 is supported on the inner side groove wall of the annular groove, so that the sealing ring 8 is effectively supported without outward expansion displacement, even if the sealing ring 8 has certain deformation, the convex rings 74 also play a role in blocking the convex rings 74, further outward expansion of the sealing ring 8 is. The outer ring of the sealing ring 8 is provided with a conical surface 82, and the outer end of the sealing ring 8 is an end part with a small diameter of the conical surface 82. The conical surface 82 has a guiding function, so that sealing is convenient, interference is not easy to generate, the sealing ring 8 is deformed, and the sealing effect of the sealing ring 8 is ensured.

The outer end of the valve cover 5 is provided with an outward-expanding flaring, the inner end of the movable connecting pipe 7 is embedded with a sealing ring 9, and the sealing ring 9 is provided with an inclined surface 91 attached to the inner wall of the flaring, so that the sealing performance between the valve cover 5 and the inner end of the movable connecting pipe 7 is ensured. Connecting portion 11 of valve body 1 bottom evagination, connecting portion 11 have the connecting hole 12 that link up, and connecting hole 12 is connected with thermometer 10, and connecting portion 11 and the connecting hole 12 that link up make 1 bottom two sides of valve body all can install thermometer 10, reduce 10% than the cost of current take thermometer ball valve, and thermometer 10 is used for monitoring pipeline temperature.

Example 2

As shown in fig. 4, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and the difference lies in that in the present embodiment, one end of the valve body 1 is directly screwed with the valve cap 6, the other end of the valve body 1 is screwed with the valve cap 5, the valve cap 5 is further screwed with the locking cap 13, the locking cap 13 is provided with the PPR adapter tube 14, the inner end of the PPR adapter tube 14 is embedded with the sealing gasket 15 sealed at the end of the valve cap 5, the outer end of the PPR adapter tube 14 extends out of the locking cap 13, the outer end of the locking cap 13 is provided with the turned-over edge 131 turned inwards, the outer wall of the PPR adapter tube 14 is provided with the convex rib 141 protruding radially and abutting against the inner side of the turned-over edge 131, so.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a ball valve, includes valve body (1), valve ball (2) and valve rod (3), valve ball (2) be located valve body (1), the inner of valve rod (3) be connected with valve ball (2), the outer end of valve rod (3) stretches out valve body (1) and is connected with hand wheel (4), valve body (1) one end threaded connection have valve cap (6), valve cap (6) in be equipped with loose joint pipe (7), valve cap (6) outer end inner wall have radial convex fender edge (61), loose joint pipe (7) inner have radial convex fender shoulder (71), fender shoulder (71) support and lean on keeping off along (61) and keeping off under the effect along (61) loose joint pipe (7) inner end pressed in valve cap (6) outer end port department, loose joint pipe (7) stretch out the valve cap (6) outside and loose joint pipe (7) outer end tip be equipped with the external screw thread that is used for connecting, the sealing device is characterized in that an annular groove is formed in the outer wall of the movable connecting pipe (7), a sealing ring (8) is arranged in the annular groove, an expansion-preventing structure for preventing the sealing ring (8) from being expanded due to over-tightness during connection is arranged on the outer wall of the movable connecting pipe (7), a rotating hole (72) formed by a plurality of cutting surfaces is formed in the inner wall of the movable connecting pipe (7), and a plurality of contact planes (73) are arranged on the outer wall of the movable connecting pipe (7).

2. A ball valve according to claim 1, characterized in that the anti-expansion means comprise a ring of protruding collar (74) axially protruding from the inner wall of the annular groove of the union (7), the inner end of the sealing ring (8) abutting against the protruding collar (74) and the inner end of the sealing ring (8) having an axially protruding shoulder (81), the shoulder (81) being located inside the protruding collar (74) and the shoulder (81) abutting against the inner wall of the annular groove.

3. A ball valve according to claim 2, characterized in that the outer ring of the sealing ring (8) has a conical surface (82), and the outer end of the sealing ring (8) is the end of the conical surface (82) with the smaller diameter.

4. A ball valve according to claim 3, wherein the valve body (1) comprises a valve cover (5) connected with one end of the valve body, the outer end of the valve cover (5) is connected with a valve cap (6) in a threaded manner, the valve cover (5) is provided with a flared opening, a sealing ring (9) is embedded in the inner end of the union pipe (7), and the sealing ring (9) is provided with an inclined surface (91) attached to the inner wall of the flared opening.

5. A ball valve according to claim 4, characterized in that the rotary hole (72) is a regular hexagonal inner hole, and the contact planes (73) are six-sided and are circumferentially and uniformly distributed on the outer wall of the union tube (7).

6. A ball valve according to claim 1 or 2 or 3 or 4 or 5, characterized in that the bottom of the valve body (1) is provided with a convex connecting part (11), the connecting part (11) is provided with a through connecting hole (12), and the connecting hole (12) is connected with a thermometer (10).

7. A ball valve according to claim 4, characterized in that the other end of the valve body (1) is internally threaded.

8. The ball valve according to claim 1, wherein the other end of the valve body (1) is in threaded connection with a valve cover (5), the valve cover (5) is in threaded connection with a lock cap (13), a PPR (polypropylene random) adapter tube (14) is arranged in the lock cap (13), a sealing gasket (15) sealed at the end part of the valve cover (5) is embedded in the inner end of the PPR adapter tube (14), the outer end of the PPR adapter tube (14) extends out of the lock cap (13), a turned-over edge (131) turned inwards is arranged at the outer end of the lock cap (13), and a convex rib (141) protruding radially and abutted against the inner side of the turned-over edge (131) is arranged on the outer wall of the PPR adapter tube (14).