Zero-leakage eccentric semi-ball valve

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to a zero-leakage eccentric semi-ball valve which comprises a valve body, a supporting seat is fixedly connected to the top of the valve body, a supporting block is rotatably connected to the interior of the supporting seat, a valve rod is fixedly connected to the interior of the supporting block, and a handle is fixedly connected to the top of the valve rod. A limiting disc is fixedly connected to the upper section of a rod body of the valve rod, a lubricating mechanism is arranged on the right side of the exterior of the supporting seat, and a locking mechanism is arranged on the left side of the exterior of the supporting seat. According to the ball valve, the locking mechanism is arranged on the left side of the supporting seat, the locking mechanism comprises the locking pin which stretches out and draws back through the spring, and the locking pin can be inserted into the limiting disc on the valve rod from the bottom under the action of elastic force, so that the valve rod is locked, it is guaranteed that a valve element cannot be loosened when the valve rod is opened and closed, and the purpose of zero leakage of the ball valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a zero-leakage eccentric semi-ball valve. Background Art

[0002] The eccentric semi-ball valve is a relatively new type of ball valve. It has some advantages unique to its structure, such as no friction when switching, no wear of the seal, and small opening and closing torque.

[0003] Utility model patent publication number CN201772092U discloses an eccentric hemispherical valve comprising a valve body and a hemispherical valve core. The valve body is provided with an inlet and an outlet on its side, and bearing seats are provided at the top and bottom of the valve body, respectively. An upper sleeve is fixedly mounted within the bearing seat at the top of the valve body, and an upper half-shaft is rotatably mounted within the upper sleeve. A lower half-shaft is fixedly mounted within the bearing seat at the bottom of the valve body, with one end of the lower half-shaft extending into the valve body and a lower sleeve rotatably mounted on the protruding end. The upper and lower half-shafts are sealed against the bearing seats, and hemispherical valve cores are fixedly mounted on the corresponding ends of the upper half-shaft and lower sleeve. The hemispherical valve core is positioned in the flow passage between the inlet and outlet of the valve body and seals against one side of the flow passage of the valve body. This eccentric hemispherical valve features a simple structure, easy installation and use, high operating efficiency, and improved service life and economic benefits, broadening the application range of this type of valve.

[0004] However, when using the existing eccentric hemispherical valve, the handle on the valve stem is easy to be accidentally touched, thereby causing the valve body to leak, and the valve stem is easy to wear and tear, making it inconvenient to use. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a zero-leakage eccentric hemispherical valve, which solves the problem of the existing eccentric hemispherical valve in which the handle is easily touched by mistake during use due to the handle on the valve stem, thereby causing valve body leakage. At the same time, it solves the problem that the valve stem is easily worn and inconvenient to use.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a zero-leakage eccentric hemispheric valve, comprising a valve body, the top of the valve body is fixedly connected to a support seat, the interior of the support seat is rotatably connected to a support block, the interior of the support block is fixedly connected to a valve stem, the top of the valve stem is fixedly connected to a handle, the upper section of the stem of the valve stem is fixedly connected to a limiting disk, a lubrication mechanism is provided on the external right side of the support seat, and a locking mechanism is provided on the external left side of the support seat.

[0007] Preferably, the lubricating mechanism includes a hollow shell fixedly connected to the outside of the support seat, a connecting plate slidably connected to the inside of the hollow shell, a sliding rod fixedly connected to the upper end of the connecting plate, the sliding rod passes through the hollow shell and is slidably connected to the hollow shell, a pull ring is fixedly connected to the top of the sliding rod, a fixed rod is fixedly connected to the top of the inner side of the hollow shell, a pressure ring is fixedly connected to the bottom of the fixed rod, the pressure ring is slidably connected to the outside of the sliding rod, a sponge block is in contact with the pressure ring and the connecting plate, and the sponge block is slidably connected to the outside of the sliding rod, the side walls of the hollow shell and the support seat are both provided with through holes, and the through holes are connected. The provision of the lubricating mechanism has a lubricating effect on the support block on the valve stem, so that the valve stem can be opened and closed smoothly, which is convenient for use.

[0008] Preferably, a spring 1 is fixedly connected to the bottom of the connecting plate, and the other end of the spring 1 is fixedly connected to the inner surface of the hollow shell. The setting of the spring 1 has an auxiliary reset effect for the connecting plate and the slide rod.

[0009] Preferably, a rubber plug is slidably connected to the right side wall of the hollow shell, and the rubber plug is made of rubber. The provision of the rubber plug facilitates adding lubricating oil into the hollow shell.

[0010] Preferably, the locking mechanism includes a fixed sleeve fixedly connected to the outside of the support seat, a locking pin slidably connected to the inside of the fixed sleeve, the locking pin being plugged into the limit plate, and a second spring provided on the inside of the fixed sleeve, one end of the second spring being fixedly connected to the locking pin, and the other end of the second spring being fixedly connected to the inner surface of the fixed sleeve. The locking mechanism, in conjunction with the limit plate, locks the valve stem, preventing it from loosening, thereby achieving the purpose of preventing leakage.

[0011] Preferably, a pull rod is fixedly connected to the middle section of the locking pin, the pull rod passes through the fixed sleeve and is slidably connected to the fixed sleeve, and a magnetic ring is fixedly connected to the middle section of the pull rod, and the magnetic ring is attracted to the fixed sleeve. The arrangement of the pull rod facilitates pulling the locking pin.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model sets a lubrication mechanism on the right side of the support seat. The sponge block in the lubrication mechanism can store lubricating oil. Then, the slide rod is pulled by the pull ring to move the connecting plate at the end of the slide rod up. The sponge block is squeezed by cooperating with the pressure ring to release the lubricating oil, thereby lubricating the support block on the valve stem, reducing wear and improving convenience of use.

[0014] 2. The utility model sets a locking mechanism on the left side of the support seat. The locking mechanism contains a locking pin that is retracted and extended by a spring. The locking pin is inserted from the bottom into the limit plate on the valve stem under the action of elastic force, thereby locking the valve stem, thereby ensuring that the valve stem will not loosen when opening and closing the valve core, thereby achieving the purpose of zero leakage of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of the utility model is three-dimensional Figure 1 ;

[0016] Figure 2 The overall structure of the utility model is three-dimensional Figure 2 ;

[0017] Figure 3 For the utility model Figure 1 A sectional perspective view of a local structure;

[0018] Figure 4 For the utility model Figure 3 A magnified view of the local structure.

[0019] In the figure: 1. Valve body; 2. Support seat; 3. Valve stem; 4. Support block; 5. Lubrication mechanism; 6. Limit plate; 7. Handle; 8. Locking mechanism; 51. Hollow shell; 52. Connecting plate; 53. Spring 1; 54. Sliding rod; 55. Sponge block; 56. Pull ring; 57. Fixed rod; 58. Pressing ring; 59. Rubber plug; 510. Through hole; 81. Fixed sleeve; 82. Locking pin; 83. Spring 2; 84. Pull rod; 85. Magnetic ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , a zero-leakage eccentric hemispheric valve includes a valve body 1, the top of the valve body 1 is fixedly connected to a support seat 2, the internal rotation of the support seat 2 is connected to a support block 4, the internal of the support block 4 is fixedly connected to a valve stem 3, the top of the valve stem 3 is fixedly connected to a handle 7, and the upper section of the stem of the valve stem 3 is fixedly connected to a limit disk 6.

[0022] See also Figure 4The outer right side of the support seat 2 is provided with a lubricating mechanism 5. Through the setting of the lubricating mechanism 5, the support block 4 on the valve stem 3 has a lubricating effect, so that the valve stem 3 can be opened and closed smoothly and is easy to use. The lubricating mechanism 5 includes a hollow shell 51 fixedly connected to the outer side of the support seat 2, and a connecting plate 52 is slidably connected to the inner side of the hollow shell 51. The upper end of the connecting plate 52 is fixedly connected to a sliding rod 54, and the sliding rod 54 passes through the hollow shell 51 and is slidably connected to the hollow shell 51. The top of the sliding rod 54 is fixedly connected to a pull ring 56, and the inner top of the hollow shell 51 is fixedly connected to a fixing rod 57. The bottom of the fixing rod 57 is fixedly connected to a pressing ring 58, and the pressing ring 58 is slidably connected to the outer side of the sliding rod 54. A sponge block 55 is in contact with the pressing ring 58 and the connecting plate 52, and the sponge block 55 is slidably connected to the outer side of the sliding rod 54. The side walls of the hollow shell 51 and the support seat 2 are both provided with through holes 510, and the through holes 510 are communicated. A spring 53 is fixedly connected to the bottom of the connecting plate 52. The other end of the spring 53 is fixedly connected to the inner surface of the hollow shell 51. The provision of spring 53 assists in resetting the connecting plate 52 and the slide rod 54. A rubber plug 59 is slidably connected to the right side wall of the hollow shell 51. The provision of the rubber plug 59 facilitates the addition of lubricating oil to the hollow shell 51.

[0023] See also Figure 4 A locking mechanism 8 is provided on the left side of the exterior of the support seat 2. The locking mechanism 8 cooperates with the limit plate 6 to lock the valve stem 3, preventing it from loosening and thereby preventing leakage. The locking mechanism 8 includes a fixed sleeve 81 fixedly connected to the exterior of the support seat 2. A locking pin 82 is slidably connected to the inner side of the fixed sleeve 81. The locking pin 82 is plugged into the limit plate 6. A spring 2 83 is provided on the inner side of the fixed sleeve 81. One end of the spring 2 83 is fixedly connected to the locking pin 82, and the other end of the spring 2 83 is fixedly connected to the inner surface of the fixed sleeve 81. A pull rod 84 is fixedly connected to the middle section of the pin body of the locking pin 82. The pull rod 84 passes through the fixed sleeve 81 and is slidably connected to the fixed sleeve 81. A magnetic ring 85 is fixedly connected to the middle section of the rod body of the pull rod 84, and the magnetic ring 85 is attracted to the fixed sleeve 81. The provision of the pull rod 84 facilitates pulling the locking pin 82.

[0024] The specific implementation process of the present invention is as follows: when in use, the locking pin 82 is pulled downward by the pull rod 84, so that the locking pin 82 slides in the fixing sleeve 81 and compresses the spring 2 83. At this time, the locking pin 82 is disengaged from the limit plate 6, thereby releasing the restriction on the valve stem 3. Then the valve stem 3 can be rotated by the handle 7 to complete the opening and closing of the valve body 1. Then, the pull rod 84 is released, and the locking pin 82 is reset under the action of the spring 2 83 and reinserted into the limit plate 6 from the bottom, thereby locking the valve stem 3, thereby ensuring that the valve core will not loosen after the valve stem 3 is closed, achieving the purpose of zero leakage of the ball valve. In addition, the sliding rod 54 is pulled by the pull ring 56, so that the connecting plate 52 at the end of the sliding rod 54 moves upward, and through cooperation with the pressure ring 58, the sponge block 55 is squeezed, thereby releasing the lubricating oil, lubricating the support block 4 on the valve stem 3, reducing wear and improving the convenience of use.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A zero-leakage eccentric hemispherical valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to a support seat (2), the interior of the support seat (2) is rotatably connected to a support block (4), the interior of the support block (4) is fixedly connected to a valve stem (3), the top of the valve stem (3) is fixedly connected to a handle (7), the upper section of the stem of the valve stem (3) is fixedly connected to a limit plate (6), a lubricating mechanism (5) is provided on the outer right side of the support seat (2), and a locking mechanism (8) is provided on the outer left side of the support seat (2).

2. The zero-leakage eccentric hemispherical valve according to claim 1, characterized in that: The lubricating mechanism (5) comprises a hollow shell (51) fixedly connected to the outside of the support seat (2), a connecting plate (52) is slidably connected to the inside of the hollow shell (51), a sliding rod (54) is fixedly connected to the upper end of the connecting plate (52), the sliding rod (54) passes through the hollow shell (51) and is slidably connected to the hollow shell (51), a pull ring (56) is fixedly connected to the top of the sliding rod (54), and the top of the inner side of the hollow shell (51) is fixedly connected to the pull ring (56). A fixing rod (57) is connected, and a pressure ring (58) is fixedly connected to the bottom of the fixing rod (57), and the pressure ring (58) is slidably connected to the outside of the sliding rod (54). A sponge block (55) is in contact with the pressure ring (58) and the connecting plate (52), and the sponge block (55) is slidably connected to the outside of the sliding rod (54). The side walls of the hollow shell (51) and the support seat (2) are both provided with through holes (510), and the through holes (510) are communicated with each other.

3. The zero-leakage eccentric hemispherical valve according to claim 2, characterized in that: A spring 1 (53) is fixedly connected to the bottom of the connecting plate (52), and the other end of the spring 1 (53) is fixedly connected to the inner surface of the hollow shell (51).

4. The zero-leakage eccentric hemispherical valve according to claim 2, characterized in that: The right side wall of the hollow shell (51) is slidably connected to a rubber plug (59), and the rubber plug (59) is made of rubber.

5. The zero-leakage eccentric hemispherical valve according to claim 1, characterized in that: The locking mechanism (8) includes a fixed sleeve (81) fixedly connected to the outside of the support seat (2), a locking pin (82) is slidably connected to the inner side of the fixed sleeve (81), the locking pin (82) is plugged into the limit plate (6), and a spring (83) is provided on the inner side of the fixed sleeve (81), one end of the spring (83) is fixedly connected to the locking pin (82), and the other end of the spring (83) is fixedly connected to the inner surface of the fixed sleeve (81).

6. The zero-leakage eccentric hemispherical valve according to claim 5, characterized in that: The middle section of the locking pin (82) is fixedly connected to a pull rod (84), the pull rod (84) passes through the fixed sleeve (81) and is slidably connected to the fixed sleeve (81), the middle section of the pull rod (84) is fixedly connected to a magnetic ring (85), and the magnetic ring (85) is attracted to the fixed sleeve (81).

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