Combined ball valve connecting device

Abstract

The utility model discloses a combined ball valve connecting device which comprises a combined ball valve structure, a hoop assembly, a sealing hemisphere and a rotating rod. The rotating rod drives the sealing hemisphere to rotate to achieve pipeline separation and butt joint, and the hoop assembly fixes the combined ball valve structure to facilitate disassembly and assembly. The hemisphere and sealing gasket structural form is adopted, and two or more sets of pipelines can be connected at the same time; the clamp is adopted for connection, so that separation and butt joint are convenient; the gasket adopts a spring steel ball limiting structure to prevent the hemisphere from accidentally rotating; the corrugated spring is adopted to ensure reliable sealing of the hemisphere and the sealing gasket; the hoop is in conical surface contact with the valve body, so that the valve body is conveniently connected with the hoop, and the performance is reliable.

Description

Technical Field

[0001] The utility model belongs to the field of connection systems for cooling pipelines of special vehicles, and particularly relates to a combined ball valve connection device. Background Art

[0002] At present, quick-change structures are mostly used for connecting the engine cooling pipelines of special vehicles. Figure 1 In places where the system installation space is small and separation and docking are difficult, when the product is separated, the piston assembly is fixed to the left and right valve bodies under the action of the spring seat and the small spring. During docking, the left and right valve bodies are connected, driving the piston assembly to separate from the sealing surface of the valve body to achieve pipeline connection. According to the structural principle of the product, the existing quick-release connectors have the following defects: the through diameter is small; during docking, the left and right valve bodies need to be axially centered, and at the same time, the forces of the large and small springs need to be overcome, which is not conducive to assembly in a narrow space, especially in a space where visual inspection is impossible. During separation, the left and right valve bodies need to use an external force to push the outer sleeve to overcome the force of the large spring, which is not conducive to assembly. Summary of the Utility Model

[0003] The purpose of the utility model is to reduce the product space while ensuring the through diameter size. In a narrow space, pipeline docking and separation can be quickly and conveniently achieved, with the advantages of simple and convenient operation. After docking and separation, the sealing performance is reliable, and at the same time, the steel ball can be prevented from rotating.

[0004] The technical solution of the utility model: A combined ball valve connection device includes a combined ball valve structure, a clamp assembly, a sealing hemisphere, and a rotating rod; the combined ball valve structure is composed of a left valve body and a right valve body, the left valve body and the right valve body are symmetric structures, the left valve body and the right valve are connected in a staggered manner at the symmetry line, and the clamp assembly is placed on the front and back sides outside the symmetry line of the left valve body and the right valve body and is connected by clamping; the left valve body and the right valve body are both provided with a plurality of hollow grooves, the sealing hemisphere is placed in the hollow grooves, a square hole is provided near the opening direction of the sealing hemisphere for cooperation with the rotating rod, the cross-section of the rotating rod is a square structure, one end of the rotating rod is placed outside the top of the combined ball valve structure, and the other end is placed inside the bottom of the combined ball valve structure. The rotating rod is provided with a left rotating rod and a right rotating rod, which respectively pass through the left valve body, the right valve body, and the sealing hemisphere.

[0005] Furthermore, the clamp assembly is composed of a clamp and a buckle structure; the clamp is symmetrically arranged in a surrounding shape by a front clamp and a rear clamp; the buckle structure is placed outside one end of the clamp, and the other end is hinged; the buckle structure is composed of two groups of locking hooks, a torsion spring, and a pin shaft, and is respectively fixed to one end of the clamp by the pin shaft passing through the through holes of the torsion spring and the locking hook. The hooked end of the locking hook can be hooked on the opposite pin shaft.

[0006] Further, a fixed cover is threadedly connected to the top end of the rotating rod. A limiting steel ball is provided inside the fixed cover near the symmetry line of the left valve body and the right valve body. A return spring is provided below the limiting steel ball, and a limiting gasket is provided above the limiting steel ball. The limiting gasket is in sealed contact with the inner side of the fixed cover. Sealing rings I are respectively provided at the joints of the left rotating rod and the left valve body and the right rotating rod and the right valve body.

[0007] Further, sealing gaskets are respectively provided at the gaps between the arc part of the sealing hemisphere and the first hollow groove and the second hollow groove. A corrugated spring is also provided between the sealing gaskets and the left valve body and the right valve body.

[0008] Further, a sealing ring II is provided at the misaligned docking part of the left valve body and the right valve body.

[0009] Further, the contact surfaces of the left and right valve bodies with the clamp are in conical contact connection.

[0010] Advantages of the present utility model:

[0011] (1) The product has multiple groups of pipeline connections;

[0012] (2) It can quickly and conveniently achieve pipeline docking and separation;

[0013] (3) After pipeline docking and separation, there is a locking device to prevent the steel ball from rotating;

[0014] (4) The clamp connection is convenient and reliable;

[0015] (5) It has a small installation space, is simple and convenient to operate, and the sealing is safe and reliable. Description of the Drawings

[0016] The drawings here are incorporated into the description and form a part of this description, showing embodiments in line with the present utility model, and are used together with the description to explain the principles of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is the prior art;

[0018] Figure 2 is the structural schematic diagram of the combined ball valve connection device provided by the present utility model;

[0019] Figure 3 is the three-dimensional view of the combined ball valve connection device provided by the present utility model;

[0020] Figure 4 is the top view of the combined ball valve connection device provided by the present utility model;

[0021] Figure 5 Separation diagram of the clamp assembly and the combined ball valve structure provided by the present utility model;

[0022] Figure 6 Schematic diagram of the clamp assembly structure provided by the present utility model;

[0023] Figure 7 Schematic diagram of the buckle structure provided by the present utility model;

[0024] Figure 8 Connection diagram of the clamp assembly and the combined ball valve structure provided by the present utility model;

[0025] Figure 9 Connection diagram of the combined ball valve connection device provided by the present utility model;

[0026] In the attached drawings:

[0027] 1 - Combined ball valve structure, 11 - Left valve body, 12 - Right valve body, 111 - First hollow groove, 121 - Second hollow groove,

[0028] 2 - Clamp assembly, 21 - Clamp, 22 - Buckle structure, 211 - Front clamp, 212 - Rear clamp, 221 - Lock hook, 222 - Torsion spring, 223 - Pin shaft,

[0029] 3 - Sealing hemisphere, 31 - Sealing gasket, 32 - Second sealing ring,

[0030] 4 - Rotating rod, 41 - Fixed cover, 42 - Limit steel ball, 43 - Return spring, 44 - Limit gasket, 45 - First sealing ring, 46 - Wave spring, 47 - Left rotating rod, 48 - Right rotating rod. Detailed implementation manners

[0031] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present utility model will be more complete and comprehensive, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] Please refer to Figure 2-9, which shows the structural schematic diagram of the combined ball valve connection device provided by the present utility model, including a combined ball valve structure 1, a clamp assembly 2, a sealing hemisphere 3, and a rotating rod 4; the combined ball valve structure 1 is composed of a left valve body 11 and a right valve body 12, the left valve body 11 and the right valve body 12 are of symmetric structure, and the left valve body 11 and the right valve body 12 are connected in a misaligned butt joint at the symmetry line, and a second sealing ring 32 is provided at the misaligned butt joint of the left valve body 11 and the right valve body 12; the clamp assembly 2 is placed on the front and rear outer sides of the symmetry line of the left valve body 11 and the right valve body 12 and is connected by clamping; the left valve body 11 is provided with a plurality of hollow grooves 111, the right valve body 12 is provided with a plurality of hollow grooves 121, and the sealing hemisphere 3 is provided inside both the hollow groove 111 and the hollow groove 121. The sealing hemisphere 3 is provided with holes near the opening direction to cooperate with the rotating rod 4. The cross-section of the rotating rod 4 is of square structure. One end of the rotating rod 4 is placed outside the top of the combined ball valve structure 1, and the other end is placed inside the bottom of the combined ball valve structure 1. The rotating rod 4 is provided with a left rotating rod 47 and a right rotating rod 48, which respectively pass through the left valve body 11 and the right valve body 12 and the sealing hemisphere 3 for cooperative connection.

[0033] The clamp assembly 2 is composed of a clamp 21 and a buckle structure 22; the clamp 21 is symmetrically arranged in a surrounding shape by a front clamp 211 and a rear clamp 212; the buckle structure 22 is placed outside one end of the clamp 21 and is hinged at the other end; the buckle structure 22 is composed of two groups of locking hooks 221, a torsion spring 222, and a pin shaft 223 relatively. The pin shaft 223 respectively passes through the through holes of the torsion spring 222 and the locking hook 221 and is fixed at one end of the clamp 21. The hooked end of the locking hook 221 can be hooked on the opposite pin shaft 223.

[0034] A fixed cover 41 is sleeved on the top of the rotating rod 4. A limit steel ball 42 is provided inside the fixed cover 41 near the symmetry line of the left valve body 11 and the right valve body 12. A return spring 43 is provided below the limit steel ball 42, and a limit gasket 44 is provided above the limit steel ball 42. The limit gasket 44 is in sealed contact with the inner side of the fixed cover 41. A first sealing ring 45 is respectively provided at the connection of the left rotating rod 47 and the left valve body 11 and the connection of the right rotating rod 48 and the right valve body 12. To prevent the sealing hemisphere 3 from rotating, a limit steel ball 42 is added at the limit gasket 44, and the limit steel ball 42 prevents the limit gasket 44 from rotating under the action of the return spring 43. Since the limit gasket 44 is connected and fixed to the rotating rod 4 through a square hole, and at the same time the rotating rod 4 is connected and fixed to the limit steel ball 42 through a square hole, the limit steel ball 42 can be prevented from accidentally rotating.

[0035] Sealing gaskets 31 are respectively further provided at the arc parts of the sealing hemisphere 3 and the gaps of the hollow grooves 111 and 121, and a corrugated spring 46 is further provided between the sealing gaskets 31 and the left valve body 11 and the right valve body 12.

[0036] AsFigure 5 Separation diagram of the clamp assembly and the combined ball valve structure. When the connected pipeline needs to be separated, rotate the rotating rod 4. The sealing hemisphere 3 contacts the sealing gasket 31, and the hemisphere compresses the corrugated spring 46, causing the sealing gasket 31 to generate a sealing pressing force with the sealing hemisphere 3. The left and right valve body pipelines form a self-seal under the isolation of the sealing hemisphere 3 and the sealing gasket 31. Pull the buckle structure 22 of the clamp assembly 2, and the left and right valve bodies are disengaged from the clamp 21, quickly realizing the separation of the pipeline.

[0037] As Figure 6 shown, pull the buckle in the direction of the arrow with an external force F. The locking hook 221 overcomes the acting force of the torsion spring 222 and disengages from the pin shaft 223, realizing the separation of the pipeline connected to the left and right valve bodies.

[0038] As Figure 7-8 shown, when the left and right valve bodies are connected, under the action of an external force F, the locking hook 221 is connected to the pin shaft 223. At the same time, the locking hook 221 clamps the pin shaft 223 under the action of the torsion spring 222 to prevent the locking hook 221 from automatically disengaging from the pin shaft 223.

[0039] Figure 9 shown, when the clamp assembly 2 is docked, the connection surface between the left and right valve bodies and the clamp is a 24° conical structure with a conical surface contact connection, which is convenient for the clamp to be guided and positioned, making the connection between the left and right valve bodies more reliable. After the left and right valve bodies are connected, rotate the left rotating rod 47 and the right rotating rod 48 to make the sealing hemisphere in the open position, and the pipeline connected by the left and right valve bodies is connected.

[0040] Adopting the structure form of the hemisphere and the sealing gasket can realize the simultaneous connection of 2 groups or more pipelines; adopting the clamp connection, the separation and docking are convenient; the gasket adopts a spring steel ball limit structure to prevent the hemisphere from rotating accidentally; adopting the corrugated spring to ensure the reliable sealing between the hemisphere and the sealing gasket; the clamp and the valve body adopt a conical surface contact, which is convenient for the connection between the valve body and the clamp and has reliable performance.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Any modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, are covered by the claims of the present invention.

Claims

1. A combined ball valve connection device, characterized in that: The invention comprises a combined ball valve structure (1), a clamp assembly (2), a sealing hemisphere (3), and a rotating rod (4); the combined ball valve structure (1) is composed of a left valve body (11) and a right valve body (12); the left valve body (11) and the right valve body (12) are symmetrical structures; the left valve body (11) and the right valve body (12) are staggeredly butt-connected at the symmetry line; the clamp assembly (2) is placed on the outer sides of the front and rear sides of the symmetry line of the left valve body (11) and the right valve body (12) and connected by clamps; the left valve body (11) is provided with a plurality of hollow grooves (111); the right valve body (12) is provided with a plurality of Hollow groove 2 (121), the hollow groove 1 (111) and the hollow groove 2 (121) are both provided with sealing hemispheres (3), the cross section of the rotating rod (4) is a square structure, the sealing hemispheres (3) are both provided with square holes near the opening direction to cooperate with the rotating rod (4), one end of the rotating rod (4) is placed on the outer side of the top end of the combined ball valve structure (1), and the other end is placed on the inner side of the bottom of the combined ball valve structure (1), and the rotating rod (4) is provided with a left rotating rod (47) and a right rotating rod (48), which respectively pass through the left valve body (11) and the right valve body (12) and the sealing hemisphere (3) to cooperate and connect.

2. The combined ball valve connection device according to claim 1, characterized in that: The clamp assembly (2) is composed of a clamp (21) and a buckle structure (22); the clamp (21) is symmetrically arranged in an embracing shape, comprising a front clamp (211) and a rear clamp (212); the buckle structure (22) is arranged on the outside of one end of the clamp (21) and is hingedly connected at the other end; the buckle structure (22) is composed of two groups of locking hooks (221), a torsion spring (222) and a pin (223) which are opposite to each other, and the pin (223) is respectively fixed to one end of the clamp (21) by passing through the through holes of the torsion spring (222) and the locking hook (221), and one end of the hook of the locking hook (221) can be hooked on the pin (223) on the opposite side.

3. The combined ball valve connection device according to claim 1, characterized in that: The top end of the rotating rod (4) is threadedly connected to a fixed cover (41), and a limiting steel ball (42) is provided on the inner side of the fixing cover (41) near the symmetry line of the left valve body (11) and the right valve body (12). A return spring (43) is provided below the limiting steel ball (42), and a limiting gasket (44) is provided above the limiting steel ball (42). The limiting gasket (44) is in sealing contact with the inner side of the fixing cover (41).

4. The combined ball valve connection device according to claim 1, characterized in that: A sealing ring (45) is provided at the connection between the left rotating rod (47) and the left valve body (11), and at the connection between the right rotating rod (48) and the right valve body (12).

5. The combined ball valve connection device according to claim 1, characterized in that: A second sealing ring (32) is provided at the offset joint between the left valve body (11) and the right valve body (12).

6. The combined ball valve connection device according to claim 1, characterized in that: Sealing pads (31) are provided at the gaps between the arc portion of the sealing hemisphere (3) and the hollow groove 1 (111) and the hollow groove 2 (121), respectively, and wave springs (46) are provided between the sealing pad (31) and the left valve body (11) and the right valve body (12).

7. The combined ball valve connection device according to claim 1, characterized in that: The connection surfaces between the left and right valve bodies and the clamp (21) are conical contact connections.

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