Ball valve capable of being quickly disassembled and assembled

Abstract

The utility model discloses a quick dismounting ball valve, including: valve body, bonnet, valve seat, valve stem and ball core, the bonnet is provided on the valve body, in the valve body is provided with inlet runner and outlet runner, the valve seat and ball core are provided in the valve body and form seal for separating the inlet runner and the outlet runner to open or close, the valve stem is provided with the valve stem, the valve stem is provided with the valve stem, and the valve stem is provided with the ball core. The valve rod penetrates through the valve cover and is connected with the ball core, a mounting hole is formed in the ball core, and a quick dismounting and mounting assembly for quickly dismounting and mounting the valve rod and the ball core is arranged in the mounting hole. According to the quick dismounting and mounting device, the valve rod can be directly dismounted under the condition that the valve body is not dismounted, so that the ball valve is convenient to mount, dismount and maintain in the using process.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a quick disassembly and assembly ball valve. Background Art

[0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium in the pipeline, but also close any channel to connect the other two channels.

[0003] In the prior art, the assembly process of the ball valve is relatively complicated and has many parts. The connection between the ball and the valve stem is relatively simple and once installed, it is fixed and cannot be disassembled unless the entire valve is disassembled. The scope of application is relatively limited, so there is room for improvement. Summary of the invention

[0004] In view of the above problems, the present application proposes a quick disassembly ball valve, which is provided on the ball core and the valve stem, and can be installed, and the valve stem can be directly disassembled without disassembling the valve body, so that the ball valve is easy to install during use, and the disassembly and maintenance are also more convenient; the quick disassembly ball valve is specifically implemented by the following technical solutions:

[0005] A quick disassembly and assembly ball valve comprises: a valve body, a valve cover, a valve seat, a valve stem and a ball core, the valve cover is arranged on the valve body, the valve body is provided with an inlet flow channel and an outlet flow channel, the valve seat and the ball core are arranged in the valve body, and form a seal for separating the inlet flow channel and the outlet flow channel from being open or closed, the valve stem passes through the valve cover and is connected to the ball core, the ball core is provided with a mounting hole, and a quick disassembly and assembly component for quickly disassembling the valve stem and the ball core is arranged in the mounting hole.

[0006] It is further configured that the quick disassembly and assembly assembly includes a locking head, a first spring and a plug, the mounting hole includes the locking head, the spring and the plug, and the locking head is axially slidably arranged in the mounting hole, the locking head includes a locking portion and a limiting portion, the inner end of the mounting hole is provided with a first limiting flange, the limiting portion and the first limiting flange provided at the inner end of the mounting hole form an axial limiting fit, and the plug is installed at the outer end of the mounting hole through a fastener. Through this configuration, the locking head receives the force of the spring and always moves axially toward the inner end of the mounting hole, so that the overall structure is compact and stable.

[0007] It is further configured that the valve stem includes a sleeve rod and an inner rod, the sleeve rod is configured to be hollow and can be axially slidably sleeved on the outer periphery of the inner rod, the ball core is provided with a mounting groove, and the sleeve rod is provided with a locking hole. When the valve stem is inserted into the mounting groove, the mounting hole and the locking hole are communicated, and the locking part of the locking head passes through the locking hole. Through this configuration, the valve stem and the ball core are locked and installed, and the basic function of opening and closing the valve is realized.

[0008] It is further configured that the inner end portion of the inner rod is configured as a first conical convex portion, and the locking portion of the locking head is configured as a second conical convex portion adapted to the first conical convex portion. Through this configuration, it is convenient to squeeze the locking head when the valve stem is installed and to squeeze the locking head when disassembling, which saves effort and is more convenient.

[0009] It is further configured that a second spring is provided between the sleeve rod and the inner rod, and a limiting groove is provided on the inner wall of the sleeve rod. The lower end of the second spring is limitedly provided in the limiting groove, and the upper end of the second spring is limitedly installed by the top end of the first conical protrusion. Through this configuration, the position of the second spring is limited, and the overall structure is more stable.

[0010] It is further configured that a second limiting flange is provided at the top end of the inner rod, and a locking ring is provided between the second limiting flange and the sleeve rod, the upper end of the locking ring abuts against the second limiting flange, and the lower end abuts against the radial cross-section of the sleeve rod. Through this configuration, the inner rod is prevented from accidentally squeezing the locking head due to gravity, and the valve stem is prevented from being accidentally disassembled, and the overall structure is more stable.

[0011] It is further arranged that the locking ring includes a hinged portion and a fixed portion. Through this arrangement, the locking ring is convenient to remove and is stable when locked.

[0012] The quick disassembly and assembly ball valve described above has a mounting hole opened on the valve body, a corresponding locking hole arranged on the valve stem, and a quick disassembly and assembly component, which passes through the mounting hole and the locking hole at the same time to realize the locking installation function. On the other hand, a valve stem in the form of an inner rod and a sleeve rod is arranged, which can realize the release of the installation function and the quick disassembly function through the sliding and squeezing of the inner rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1A front cross-sectional view of a quick disassembly ball valve provided in an embodiment of the present application;

[0015] Figure 2 The quick disassembly ball valve provided in the embodiment of the present application Figure 1 Enlarged view of part A in the species;

[0016] Figure 3 The quick disassembly ball valve provided in the embodiment of the present application Figure 1 Enlarged view of part B in the species;

[0017] Figure 4 A schematic diagram of the locking ring structure in a quick disassembly ball valve provided in an embodiment of the present application.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. Valve body; 2. Valve cover; 3. Valve seat; 4. Valve stem; 5. Ball core; 6. Inlet flow channel; 7. Outlet flow channel; 8. Mounting hole; 9. Quick disassembly assembly; 10. Locking head; 11. First spring; 12. Plug; 13. Locking part; 14. Limiting part; 15. First limiting flange; 16. Sleeve rod; 17. Inner rod; 18. Mounting groove; 19. Locking hole; 20. First conical convex part; 21. Second conical convex part; 22. Second spring; 23. Limiting groove; 24. Second limiting flange; 25. Locking ring; 26. Articulated part; 27. Fixed part. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0023] Please also read Figures 1 to 4A quick disassembly ball valve comprises: a valve body 1, a valve cover 2, a valve seat 3, a valve stem 4 and a ball core 5, the valve cover 2 is arranged on the valve body 1, an inlet flow channel 6 and an outlet flow channel 7 are arranged in the valve body 1, the valve seat 3 and the ball core 5 are arranged in the valve body 1, and form a seal to separate the inlet flow channel 6 and the outlet flow channel 7 from being connected or closed, the valve stem 4 passes through the valve cover 2 and is connected to the ball core 5, a mounting hole 8 is arranged on the ball core 5, and a quick disassembly assembly 9 for quickly disassembling the valve stem 4 and the ball core 5 is arranged in the mounting hole 8.

[0024] See also Figures 1 to 3In this embodiment, the quick disassembly assembly 9 includes a locking head 10, a first spring 11 and a plug 12. The mounting hole 8 is provided with the locking head 10, the spring and the plug 12 from the inner end to the outer end, and the locking head 10 is axially slidably arranged in the mounting hole 8. The locking head 10 includes a locking portion 13 and a limiting portion 14. The limiting portion 14 forms an axial limiting fit with a first limiting flange 15 provided at the inner end of the mounting hole 8. The plug 12 is installed at the outer end of the mounting hole 8 by a fastener. Through this arrangement, the outer end of the plug 12 is arranged to be a spherical surface adapted to the surface of the ball core 5, and the plug 12 is provided with a The mounting holes 8 are all inner mounting holes 8, which will not cause convex damage to the spherical surface of the ball core 5, ensuring that the ball core 5 rotates smoothly during operation; the valve stem 4 includes a sleeve rod 16 and an inner rod 17, the sleeve rod 16 is set to be hollow and can be axially slidably sleeved on the outer periphery of the inner rod 17, the ball core 5 is provided with a mounting groove 18, and the sleeve rod 16 is provided with a locking hole 19. When the valve stem 4 is inserted into the mounting groove 18, the mounting hole 8 is connected with the locking hole 19, and the locking part 13 of the locking head 10 passes through the locking hole 19, and the sleeve rod 16 and the inner rod 17 are set to be sleeved with a small gap; The inner end of the inner rod 17 is set as a first conical convex portion 20, and the locking portion 13 of the locking head 10 is set as a second conical convex portion 21 adapted to the first conical convex portion 20. Through this arrangement, when the valve stem 4 is in the installed and locked state, the inner rod 17 is pressed downward, and the inclined surface of the first conical convex portion 20 is squeezed with the inclined surface of the second conical convex portion 21, so that the locking head 10 moves axially toward the outer end of the mounting hole 8. When the inclined surface of the second conical convex portion 21 enters the locking hole 19, the sleeve rod 16 can be pulled outward, and the sleeve can be easily removed through the guiding effect of the inclined surface of the second conical convex portion 21. Rod 16, contact locking, to achieve disassembly of the valve stem 4; a second spring 22 is also arranged between the sleeve rod 16 and the inner rod 17, the inner wall of the sleeve rod 16 is provided with a limiting groove 23, the lower end of the second spring 22 is limitedly arranged in the limiting groove 23, and the upper end of the second spring 22 is installed by the top limit of the first conical protrusion 20. Through this arrangement, the preload force of the second spring 22 always acts on the inner rod 17, and always pushes the inner rod 17 out of the sleeve rod 16, the purpose of which is to prevent the inner rod 17 from squeezing the locking head 10 under the action of gravity during the installation process, and accidentally disassembling the valve stem 4, and the overall structure is more stable.

[0025] See also Figure 4In this embodiment, a second limiting flange 24 is provided at the top end of the inner rod 17, and a locking ring 25 is provided between the second limiting flange 24 and the sleeve rod 16, the upper end of the locking ring 25 is abutted against the second limiting flange 24, and the lower end is abutted against the radial cross-section of the sleeve rod 16. Through this arrangement, when the locking ring 25 is installed and locked, the relative positions of the inner rod 17 and the sleeve rod 16 are fixed, the inner rod 17 will not slip in the sleeve rod 16, and the locking head 10 will not be squeezed. During use, the connection stability of the valve stem 4 and the ball core 5 is better; the locking ring 25 includes a hinged portion 26 and a fixed portion 27, which is convenient for disassembly and installation of the locking ring 25.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A quick disassembly ball valve, comprising: A valve body (1), a valve cover (2), a valve seat (3), a valve stem (4) and a ball core (5), wherein the valve cover (2) is arranged on the valve body (1), an inlet flow channel (6) and an outlet flow channel (7) are arranged in the valve body (1), the valve seat (3) and the ball core (5) are arranged in the valve body (1), and form a seal for controlling the conduction or closure of the inlet flow channel (6) and the outlet flow channel (7), the valve stem (4) passes through the valve cover (2) and is connected to the ball core (5), and is characterized in that: a mounting hole (8) is arranged on the ball core (5), and a quick disassembly assembly (9) is arranged in the mounting hole (8) for quickly disassembling the valve stem (4) and the ball core (5).

2. A quick disassembly ball valve according to claim 1, characterized in that The quick disassembly assembly (9) comprises a locking head (10), a first spring (11) and a plug (12); the locking head (10), the spring and the plug (12) are arranged from the inner end to the outer end of the mounting hole (8); the locking head (10) is axially slidably arranged in the mounting hole (8); the locking head (10) comprises a locking portion (13) and a limiting portion (14); a first limiting flange (15) is arranged at the inner end of the mounting hole (8); the limiting portion (14) forms an axial limiting fit with the first limiting flange (15) arranged at the inner end of the mounting hole (8); and the plug (12) is mounted on the outer end of the mounting hole (8) by a fastener.

3. A quick disassembly ball valve according to claim 2, characterized in that The valve stem (4) comprises a sleeve rod (16) and an inner rod (17); the sleeve rod (16) is hollow and can be axially slidably sleeved on the outer periphery of the inner rod (17); the ball core (5) is provided with a mounting groove (18); the sleeve rod (16) is provided with a locking hole (19); when the valve stem (4) is inserted into the mounting groove (18), the mounting hole (8) and the locking hole (19) are connected, and the locking portion (13) of the locking head (10) passes through the locking hole (19).

4. A quick disassembly ball valve according to claim 3, characterized in that The inner end of the inner rod (17) is configured as a first conical protrusion (20), and the locking portion (13) of the locking head (10) is configured as a second conical protrusion (21) adapted to the first conical protrusion (20).

5. A quick disassembly ball valve according to claim 4, characterized in that A second spring (22) is also provided between the sleeve rod (16) and the inner rod (17); a limiting groove (23) is provided on the inner wall of the sleeve rod (16); the lower end of the second spring (22) is limitedly provided in the limiting groove (23); and the upper end of the second spring (22) is limitedly installed through the top end of the first conical protrusion (20).

6. A quick disassembly ball valve according to claim 3, characterized in that A second limiting flange (24) is arranged at the top end of the inner rod (17), a locking ring (25) is arranged between the second limiting flange (24) and the sleeve rod (16), the upper end of the locking ring (25) abuts against the second limiting flange (24), and the lower end abuts against the radial section of the sleeve rod (16).

7. A quick disassembly ball valve according to claim 6, characterized in that The locking ring (25) comprises a hinged portion (26) and a fixed portion (27).

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