Floating ball valve

Abstract

The utility model discloses a floating ball valve which comprises a valve body, and a valve element is arranged in the valve body. An adjusting part for supporting the valve core is arranged outside the valve body; the adjusting piece penetrates into the valve body from the outside of the valve body and is connected with the bottom surface of the valve core; when the valve is assembled, the center of the valve element is adjusted and fixed; and then the adjusting piece is used for supporting the bottom of the valve element, so that the phenomenon that the valve element moves downwards due to gravity can be avoided. Meanwhile, the adjusting piece can enable the valve element to be always located at the center position of the valve, medium thrust and longitudinal displacement are not changed all the time, the sealing contact face of the valve is not changed all the time, and therefore sealing effectiveness is guaranteed. On the basis, although the floating ball valve is simple in structure, the problem of sealing failure of the valve due to the fact that a valve element of an existing floating ball valve moves downwards again can be solved due to the simple structure, and the use cost and the production cost of the valve cannot be increased due to the simple structure.

Description

Technical Field

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

[0002] For floating ball valves, since the valve core is sealed by the thrust of the medium, the valve core can move axially in the cavity in the closed state with the thrust of the medium. The initial state of the valve core center is automatically aligned by the squeezing of two sealing rings. Under the thrust of the medium (pressure difference), the sealing ring is squeezed and plastically deformed, the gap increases, and the valve core will fall down due to its own gravity. When the valve is closed again, the valve core cannot return to the original sealing position when the thrust of the medium is small, which is easy to cause leakage. At the same time, when the medium is under full pressure difference, that is, the thrust of the medium is large, the center of the valve core is easily offset due to the dual forces of the downward gravity of the valve core and the thrust of the medium, causing damage to the sealing ring and valve leakage. Utility Model Content

[0003] The purpose of the utility model is to provide a floating ball valve to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a float valve, comprising a valve body, wherein a valve core is arranged inside the valve body; a mounting hole is arranged at the bottom of the valve body, and an adjusting member for supporting the valve core is arranged in the mounting hole; the adjusting member penetrates from the outside of the valve body into the inside of the valve body and contacts with the bottom surface of the valve core.

[0005] As a preferred technical solution of the utility model: the regulating member includes a contact portion in contact with the valve core; the other end of the contact portion is in contact with a provided driving member, and the driving member causes the contact portion to slide upward or downward along the axis of the valve core.

[0006] As a preferred technical solution of the utility model: a first fastener is further provided on the outside of the driving member, and the adjusting member is fixed on the valve body through the first fastener connected to the mounting hole.

[0007] As a preferred technical solution of the utility model: a second fastener is further provided on the driving member, and the second fastener is pressed against the first fastener to fix the driving member in the first fastener.

[0008] As a preferred technical solution of the utility model: a sealing ring is further provided on a side of the first fastener facing the mounting hole, and the sealing ring is used to seal the gap at the connection between the first fastener and the mounting hole.

[0009] As a preferred technical solution of the utility model: the side of the valve core in contact with the regulating member is arranged to be a plane.

[0010] By adopting the above technical solution, the beneficial effects of the utility model are as follows: since the adjusting member is used to penetrate from the outside of the valve body to the inside of the valve body and is connected to the bottom surface of the valve core; the center of the valve core is adjusted and fixed during assembly; and the adjusting member is used to support the valve core at the bottom, the phenomenon of the valve core moving downward due to gravity can be solved. At the same time, the adjusting member can cause the valve core to always be in the center position of the valve, regardless of the thrust of the medium, the longitudinal displacement remains unchanged, and the valve sealing contact surface does not change, thereby ensuring the effectiveness of the seal. Based on this, although the utility model has a simple structure, it can solve the problem of sealing failure of the existing float valve due to the downward movement of the valve core under gravity, and the simple structure will not cause an increase in the use cost and production cost of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0013] Figure 3 It is a schematic diagram of the exploded structure of the valve body and the regulating member of the utility model.

[0014] In the figure: 1. valve body; 2. valve core; 3. adjusting member; 4. sealing ring; 5. contact part; 6. first fastener; 7. second fastener; 8. driving member; 9. mounting hole; 10. plane. DETAILED DESCRIPTION

[0015] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0016] See also Figure 1-3The utility model provides an embodiment: a float valve, including a valve body 1, wherein a valve core 2 is arranged inside the valve body 1; a mounting hole 9 is arranged at the bottom of the valve body 1, and an adjusting member 3 for supporting the valve core 2 is arranged in the mounting hole 9; the adjusting member 3 penetrates from the outside of the valve body 1 into the inside of the valve body 1 and contacts with the bottom surface of the valve core 2.

[0017] In summary, since the adjusting member 3 is penetrated from the outside of the valve body 1 into the inside of the valve body 1 and connected to the bottom surface of the valve core 2; the center of the valve core 2 is adjusted and fixed during assembly; and the adjusting member 3 is used to support the valve core 2 at the bottom, the problem of the valve core moving downward due to gravity can be solved. At the same time, the adjusting member 3 can cause the valve core 2 to always be in the center position of the valve, regardless of the thrust of the medium, the longitudinal displacement remains unchanged, and the valve sealing contact surface does not change, thereby ensuring the effectiveness of the seal. Based on this, although the utility model has a simple structure, it can solve the problem of the existing float valve causing the valve core to move downward due to gravity, and the simple structure will not cause an increase in the use cost and production cost of the valve.

[0018] Furthermore, the adjusting member 3 includes a contact portion 5 in contact with the valve core 2; the other end of the contact portion 5 is in contact with a driving member 8, and the driving member 8 causes the contact portion 5 to slide upward or downward along the axis of the valve core 2. Based on this, the position of the contact portion 5 can be adjusted using the driving member 8, thereby facilitating the user to cause the valve core 2 to move upward or downward along its axis through the driving member 8.

[0019] Furthermore, since a first fastener 6 is also provided on the outside of the driving member 8, and the first fastener 6 is connected to the mounting hole 9 to fix the adjusting member 3 on the valve body 1, the adjusting member 3 and the valve body 1 can be assembled. Specifically, the first fastener 6 is threadedly matched with the mounting hole 9.

[0020] At the same time, a second fastener 7 is also provided on the driving member 8, and the second fastener 7 is pressed against the first fastener 6 to fix the driving member 8 in the first fastener 6. Therefore, the second fastener 7 can be used to lock the driving member 8 on the first fastener 6 to ensure that the driving member 8 is reliably and stably fixed on the first fastener 6; wherein the second fastener 6 is preferably a nut, and at this time, the driving member 8 is preferably a hexagon socket bolt, therefore, by utilizing the threaded cooperation between the nut and the bolt, the driving structure of the driving member 8 can be simplified while realizing reliable movement of the contact portion 5.

[0021] In addition, since a sealing ring 4 is provided on the side of the first fastener 6 facing the mounting hole 9 and the gap at the connection between the first fastener 6 and the mounting hole 9 is sealed by the sealing ring 4, leakage of the valve body 1 can be reduced.

[0022] On the basis of the above scheme, since the side of the valve core 2 that contacts the regulating member 3 is set as a plane 10, the contact area between the valve core 2 and the contact portion 5 is enlarged to ensure the stable and reliable position of the valve core 2 during operation; specifically, the contact portion 5 can be set to a cylindrical shape.

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A float valve, characterized in that: It comprises a valve body (1), wherein a valve core (2) is provided inside the valve body (1); a mounting hole (9) is provided at the bottom of the valve body (1), and an adjusting member (3) for supporting the valve core (2) is provided in the mounting hole (9); The regulating member (3) penetrates from the outside of the valve body (1) into the inside of the valve body (1) and contacts the bottom surface of the valve core (2).

2. A float valve according to claim 1, characterized in that: The regulating member (3) comprises a contact portion (5) in contact with the valve core (2); the other end of the contact portion (5) is in contact with a provided driving member (8), and the driving member (8) causes the contact portion (5) to slide upward or downward along the axis of the valve core (2).

3. A float valve according to claim 2, characterized in that: A first fastener (6) is also provided on the outside of the driving member (8), and is connected to the mounting hole (9) via the first fastener (6) so as to fix the regulating member (3) on the valve body (1).

4. A float valve according to claim 3, characterized in that: The driving member (8) is also provided with a second fastening member (7), and the second fastening member (7) is pressed against the first fastening member (6) to fix the driving member (8) in the first fastening member (6).

5. A float valve according to claim 4, characterized in that: A sealing ring (4) is also provided on a side of the first fastener (6) facing the mounting hole (9), and the sealing ring (4) seals a gap at the connection between the first fastener (6) and the mounting hole (9).

6. A float valve according to any one of claims 1 to 5, characterized in that: A surface of the valve core (2) in contact with the regulating member (3) is arranged as a plane (10).

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