Three-way ball valve

Abstract

The utility model relates to a three-way ball valve which comprises a valve body, a ball core, four anti-diarrhea rings and three adjusting end covers. The valve body is an inverted T-shaped valve body provided with a left end, a right end and an upper end; the ball core is in the shape that the upper face, the left face, the rear face and the right face of a ball are cut off, and an inverted-T-shaped or L-shaped through hole is formed in the ball core. The anti-diarrhea ring is in a ring shape with the outer diameter being small inside and large outside. The adjusting end cover is tubular, the axial inner end of the adjusting end cover is necked down, and the axial inner end face of the adjusting end cover is provided with an annular second antidiarrheal ring groove around a hole; an antidiarrheal ring is arranged in the first antidiarrheal ring groove of the valve body, and the spherical crown-shaped lower end of the ball core is arranged in the antidiarrheal ring in the valve body; the other three antidiarrheal rings are respectively plugged into the second antidiarrheal ring grooves of the corresponding adjusting end covers; and the three adjusting end covers are respectively screwed into the corresponding connecting ends of the valve body through the external threads from left, right and upper parts. The three-way ball valve is convenient for switching the flow direction of a medium.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a ball valve. Background Art

[0002] At present, when the pipelines of domestic photovoltaic cleaning equipment encounter situations where the flow direction of the medium needs to be changed or switched, the traditional method is to increase the number of valves and pipelines, and to achieve this through complex valve control operations during use. In addition, the liquids used in these production fields are all highly corrosive media (such as hydrofluoric acid, concentrated nitric acid, concentrated hydrochloric acid, potassium hydroxide and other liquids). Complex pipeline design will result in high maintenance costs and high risk factors in the later stage. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a three-way ball valve which is convenient for switching the flow direction of a medium.

[0004] The technical solution for achieving the purpose of the utility model is to provide a three-way ball valve, including a valve body, a ball core, four anti-diarrhea rings and three adjusting end covers;

[0005] The valve body is an inverted T-shaped valve body with three ends: left, right and top. A spherical ball core cavity is provided at the central bottom, and a first annular anti-diarrhea ring groove is provided at the bottom of the ball core cavity; the left, right and top three connecting ends are connected with the ball core cavity, and the ports of the left, right and top three connecting ends are provided with internal and external threads; the ball core is in the shape of a sphere with the top, left, rear and right four sides cut off, a control connecting groove is provided on the front end face of the ball core, and an inverted T-shaped or L-shaped through hole is provided in the ball core; the anti-diarrhea ring is in the shape of a ring with a smaller outer diameter inside and a larger outer diameter, and the outer diameter is small inside and large outside and is stepped, with a two-section central through hole, which are a first section trumpet-shaped hole portion and a second section straight hole portion from the inside to the outside, and the diameter of the second section straight hole portion is between the maximum aperture and the minimum aperture of the first section trumpet-shaped hole portion; the adjustment end cover is tubular and the axial inner end is contracted A mouth, an annular second anti-diarrhea ring groove is arranged around the hole on its axial inner end face, and an external thread corresponding to the internal thread of the valve body is arranged on the circumferential outer end; an anti-diarrhea ring is arranged in the first anti-diarrhea ring groove of the valve body, and the ball core is arranged in the anti-diarrhea ring in the valve body by its spherical crown-shaped lower end and supported by the first section of the trumpet-shaped hole portion of the anti-diarrhea ring; the other three anti-diarrhea rings are respectively inserted into the second anti-diarrhea ring grooves arranged in the corresponding adjusting end covers by their outer parts with larger outer diameters and the second section of the straight hole portions, and the adjusting end covers are provided with annular anti-slip convex ribs at the stepped lower parts with smaller outer diameters of the corresponding anti-diarrhea rings; the above-mentioned three adjusting end covers are respectively screwed into the corresponding connecting ends of the valve body by their external threads from the left, right and top, and the corresponding anti-diarrhea rings support the left, top and right ends of the ball core by their first section of the trumpet-shaped hole portions.

[0006] Furthermore, an inverted T-shaped through hole with openings on the left, right and top is provided in the core.

[0007] Furthermore, an L-shaped through hole with left and upper openings is provided in the core.

[0008] Furthermore, the three-way ball valve also includes 3 first O-rings, 3 second O-rings and 3 third O-rings; the 3 first O-rings are respectively arranged at the innermost ends of the second anti-diarrhea ring grooves of the corresponding adjusting end covers and are compressed by the corresponding anti-diarrhea rings; a step is provided at the tail end of the necked portion of the adjusting end cover for inserting a sealing ring, and the 3 second O-rings are respectively arranged between the connection between the outer peripheral step-shaped portion of the corresponding adjusting end cover and the inner wall of the valve body; a third O-ring groove is provided on the axial outer end surface of the adjusting end cover, and the 3 third O-rings are arranged in the third O-ring grooves of the corresponding adjusting end cover.

[0009] Furthermore, the three-way ball valve also includes a connecting rod and an adapter sleeve; a connecting rod connecting hole is provided in the center of the front end face of the valve body, and evenly spaced positioning holes and buckles are provided around the connecting rod connecting hole; the adapter sleeve is arranged in the center of the front end face of the valve body through the positioning column and the buckle, and the connecting rod passes through the adapter sleeve 19 and the connecting rod connecting hole of the valve body and is inserted into the control connecting groove of the ball core.

[0010] Furthermore, the three-way ball valve also includes three sets of socket assemblies, the socket assemblies include nuts and sockets, and each set of socket assemblies is arranged relative to one of the left, right and upper connecting ends of the valve body by its socket, and then the corresponding nut is screwed together with the external thread of the corresponding connecting end of the valve body, so that the socket assembly is installed on the valve body.

[0011] The utility model has positive effects: (1) The three-way ball valve of the utility model simplifies the pipeline design. The flow direction of the medium can be changed or switched through one valve, and two mutually orthogonal pipelines can be connected to play a distribution role, which facilitates the automatic control of the pipeline and solves the problem of overly complicated design, installation and operation of pipelines for conveying highly corrosive media.

[0012] (2) The valve body of the three-way ball valve of the utility model is in a three-way shape, and the through hole of the ball core is in an inverted T-shape or L-shape. By manipulating and rotating 90°, the through hole of the ball core is turned to change the direction and realize the change of the flow direction of the medium. When the through hole of the ball core is in an inverted T-shape, it can be switched between three-way, left upper, left and right, and right upper. When the through hole of the ball core is in an L-shape, it can be switched between left upper, right upper, and closed.

[0013] (3) The nut of the three-way ball valve of the utility model connects the socket and the valve body by thread, and the third sealing ring is sealed. This design adopts a union type connection, which is convenient for the installation and disassembly of the valve;

[0014] (4) The regulating end cover of the three-way ball valve of the utility model is threadedly connected to the valve body and is screwed into the valve body and sealed by a diarrhea-stop ring. The regulating end cover and the valve body are sealed by a first O-ring and a second O-ring to prevent leakage of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram (front view) of a three-way ball valve of the utility model;

[0016] Figure 2 for Figure 1 Bottom view of

[0017] Figure 3 for Figure 2 AA surface section view;

[0018] Figure 4 for Figure 3 A top view of the ball core in FIG.

[0019] Figure 5 for Figure 4 BB surface cross-sectional view;

[0020] Figure 6 is a top view of the core in Example 2;

[0021] Figure 7 for Figure 6 CC surface section view.

[0022] The symbols in the above drawings are as follows: valve body 11, ball core 12, anti-diarrhea ring 13, first O-ring 14, second O-ring 15, third O-ring 16, adjustment end cover 17, connecting rod 18, adapter sleeve 19,

[0023] Nut 21, socket 22. DETAILED DESCRIPTION

[0024] (Example 1)

[0025] See Figures 1 to 3 A three-way ball valve of this embodiment includes a valve body assembly and a socket assembly.

[0026] The valve body assembly includes a valve body 11, a ball core 12, four anti-diarrhea rings 13, three first O-rings 14, three second O-rings 15, three third O-rings 16, three adjusting end covers 17, a connecting rod 18 and an adapter sleeve 19.

[0027] The valve body 11 is an inverted T-shaped valve body with three ends: left, right and upper. A spherical ball core cavity is provided at the central bottom, and a first annular anti-diarrhea ring groove is provided at the bottom of the ball core cavity. The left, right and upper three connecting ends are connected with the ball core cavity, and the ports of the left, right and upper three connecting ends are provided with internal and external threads. A connecting rod connecting hole is provided in the center of the front end surface of the valve body 11, and positioning holes and buckles are provided at even intervals around the connecting rod connecting hole. Figure 4 and Figure 5The ball core 12 is in the shape of a sphere with the top, left, back and right sides cut off. The front end surface of the ball core 12 is provided with a control connection groove, and the ball core 12 is provided with an inverted T-shaped through hole with left, right and top openings; the anti-diarrhea ring 13 is in the shape of a ring with a small inner diameter and a large outer diameter, and the outer diameter is small inside and large outside and is stepped, with a two-stage central through hole, which is a first section trumpet-shaped hole part and a second section straight hole part from the inside to the outside, and the diameter of the second section straight hole part is between the maximum hole diameter of the first section trumpet-shaped hole part and The regulating end cover 17 is tubular and has a narrowed axial inner end. The tail end of the narrowed portion is provided with a step for inserting a sealing ring. The axial inner end surface is provided with a second annular anti-diarrhea ring groove around the hole, and the axial outer end surface is provided with a third O-ring groove. The circumferential outer end is provided with an external thread corresponding to the internal thread of the valve body 11; an anti-diarrhea ring 13 is provided in the first anti-diarrhea ring groove of the valve body 11, and the ball core 12 is arranged in the anti-diarrhea ring 13 in the valve body 11 by its spherical crown-shaped lower end and by the The anti-diarrhea ring 13 is supported at the first trumpet-shaped hole portion; the three first O-rings 14 are respectively arranged at the innermost end of the second anti-diarrhea ring groove of the corresponding adjusting end cover 17; the other three anti-diarrhea rings 13 are respectively inserted into the second anti-diarrhea ring groove of the corresponding adjusting end cover 17 by the outer part with larger outer diameter and the second straight hole portion and press the corresponding first O-ring 14, and the adjusting end cover 17 is provided with an annular anti-slip convex rib at the stepped lower part with smaller outer diameter of the corresponding anti-diarrhea ring 13; the above-mentioned three adjusting end covers 17 are respectively screwed into the corresponding connecting ends of the valve body 11 by their external threads from the left, right and top, and the corresponding anti-diarrhea ring 13 supports the left, upper and right ends of the ball core 12 by the first trumpet-shaped hole portion thereof, the three second O-rings 15 are respectively arranged between the connection of the outer peripheral step-shaped portion of the corresponding adjusting end cover 17 and the inner wall of the valve body 11, and the three third O-rings 16 are arranged in the third O-ring groove of the corresponding adjusting end cover 17. The adapter sleeve 19 is arranged at the center of the front end surface of the valve body 11 through a positioning column and a buckle. The connecting rod 18 passes through the adapter sleeve 19 and the connecting rod connecting hole of the valve body 11 and is inserted into the control connecting groove of the ball core 12 to control the rotation of the ball core 12.

[0028] There are three sets of socket assemblies, each of which includes a nut 21 and a socket 22. Each set of socket assemblies is arranged with its socket 22 relatively to one of the left, right and upper connecting ends of the valve body 11, and then the corresponding nut 21 is screwed together with the external thread of the corresponding connecting end of the valve body 11, so that the socket assembly is installed on the valve body 11.

[0029] When the three-way ball valve of this embodiment is in use, the connecting rod 18 is connected to the driving actuator, and the driving actuator controls the connecting rod 18 and the ball core 12 to rotate 90° clockwise or counterclockwise, thereby realizing switching between three-way, upper left, left and right, and upper right. The through hole of the ball core 12 is rotated to change the direction, thereby realizing a change in the flow direction of the medium.

[0030] (Example 2)

[0031] A three-way ball valve in this embodiment is basically the same as that in embodiment 1, except that: Figure 6 and Figure 7 The core 12 is provided with an L-shaped through hole with left and upper openings.

[0032] When the three-way ball valve of this embodiment is in use, the connecting rod 18 is connected to the driving actuator, and the driving actuator controls the connecting rod 18 and the ball core 12 to rotate 90° clockwise or counterclockwise, thereby switching between upper left, upper right and closed. The through hole of the ball core 12 is rotated to change the direction, thereby changing the flow direction of the medium.

[0033] Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A three-way ball valve, characterized in that: It comprises a valve body (11), a ball core (12), four anti-diarrhea rings (13) and three adjustment end covers (17); The valve body (11) is an inverted T-shaped valve body with three ends, namely, left, right and upper ends. A spherical ball core cavity is provided at the central bottom thereof, and an annular first anti-diarrhea ring groove is provided at the bottom of the ball core cavity; the left, right and upper three connecting ends are connected to the ball core cavity, and the ports of the left, right and upper three connecting ends are provided with internal and external threads; the ball core (12) is in the shape of a sphere with four upper, left, rear and right sides cut off, a control connecting groove is provided on the front end surface of the ball core (12), and an inverted T-shaped or L-shaped through hole is provided inside the ball core (12); the anti-diarrhea ring (13) is in the shape of an annular ring with a smaller outer diameter and a larger outer diameter, and the outer diameter is smaller inside and larger outside in a stepped shape, and has a two-stage central through hole, which are a first trumpet-shaped hole portion and a second straight hole portion from the inside to the outside, and the diameter of the second straight hole portion is between the maximum aperture and the minimum aperture of the first trumpet-shaped hole portion; the adjustment end cover (17) is tubular and has an axial inner end narrowed, and an annular second anti-diarrhea ring is provided around the hole on its axial inner end surface. The first anti-diarrhea ring groove of the valve body (11) is provided with an external thread corresponding to the internal thread of the valve body (11); an anti-diarrhea ring (13) is provided in the first anti-diarrhea ring groove of the valve body (11); the ball core (12) is arranged in the anti-diarrhea ring (13) in the valve body (11) by its spherical crown-shaped lower end and supported by the first trumpet-shaped hole portion of the anti-diarrhea ring (13); the other three anti-diarrhea rings (13) are respectively inserted into the second anti-diarrhea ring grooves of the corresponding adjustment end caps (17) by their outer parts with larger outer diameters and the second straight hole portions, and the adjustment end caps (17) are provided with annular anti-slip convex ribs at the stepped lower parts of the corresponding anti-diarrhea rings (13) with smaller outer diameters; the above three adjustment end caps (17) are respectively screwed into the corresponding connecting ends of the valve body (11) by their external threads from the left, right and upper parts, and the corresponding anti-diarrhea rings (13) support the left, upper and right ends of the ball core (12) by their first trumpet-shaped hole portions.

2. A three-way ball valve according to claim 1, characterized in that: An inverted T-shaped through hole with openings on the left, right and top is provided in the ball core (12).

3. A three-way ball valve according to claim 1, characterized in that: An L-shaped through hole with left and upper openings is arranged in the ball core (12).

4. A three-way ball valve according to claim 1, characterized in that: The valve body (11) further comprises three first O-rings (14), three second O-rings (15) and three third O-rings (16); the three first O-rings (14) are respectively arranged at the innermost ends of the second anti-diarrhea ring grooves of the corresponding adjusting end covers (17) and are compressed by the corresponding anti-diarrhea rings (13); a step is provided at the tail end of the necking portion of the adjusting end cover (17) for inserting a sealing ring, and the three second O-rings (15) are respectively arranged between the connection between the outer peripheral step-shaped portion of the corresponding adjusting end cover (17) and the inner wall of the valve body (11); a third O-ring groove is provided on the axial outer end surface of the adjusting end cover (17), and the three third O-rings (16) are arranged in the third O-ring grooves of the corresponding adjusting end cover (17).

5. The three-way ball valve according to claim 1, characterized in that: It also includes a connecting rod (18) and an adapter sleeve (19); a connecting rod connection hole is provided at the center of the front end surface of the valve body (11), and positioning holes and buckles are provided at even intervals around the connecting rod connection hole; the adapter sleeve (19) is arranged at the center of the front end surface of the valve body (11) through a positioning column and the buckle, and the connecting rod (18) passes through the adapter sleeve (19) and the connecting rod connection hole of the valve body (11) and is then inserted into the control connection groove of the ball core (12).

6. A three-way ball valve according to claim 1, characterized in that: The valve body (11) further comprises three sets of socket assemblies, each of which comprises a nut (21) and a socket (22). Each set of the socket assemblies comprises a socket (22) and one of the three connecting ends of the valve body (11), namely, the left, right and upper ends, which are arranged opposite to each other. The corresponding nut (21) is screwed together with the external thread of the corresponding connecting end of the valve body (11), so that the socket assembly is installed on the valve body (11).

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