High-temperature-resistant ball valve

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to a high-temperature-resistant ball valve which comprises a valve body. A control mechanism is arranged on the inner side of the valve body, a heat dissipation mechanism is arranged on one side of the valve body, a sealing mechanism is arranged on the inner side of the valve body, the control mechanism comprises a ball body, a cavity is formed in the inner side of the ball body, a supporting plate is fixed to the inner side of the cavity, an ejector rod is fixed to the top side of the ball body, and a round rod is fixed to the bottom side of the ball body. Through holes are formed in the circumferential face of the ejector rod and the circumferential face of the round rod, the inner side of the cavity is filled with cooling liquid, a valve rod is fixed to the top end of the ejector rod, when the valve body is in an open state, the sealing gasket is located on the inner side of the groove, at the moment, the sealing gasket is not extruded, and heat cannot be transmitted to the sealing gasket from the inner side of the ball body. The valve rod is rotated to drive the ball body to rotate, the output ports on the two sides are blocked, at the moment, cooling liquid on the inner side of the cavity can absorb heat of the sealing gasket, and the problem that an existing ball valve is prone to aging and damage in the high-temperature environment is solved.

Description

Technical Field

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

[0002] The opening and closing part of the ball valve is a sphere, and the sphere is caused to rotate around the axis of the ball valve to control the opening and closing of the valve, thereby realizing the functions of controlling the diversion, confluence and switching of flow direction of the medium. According to different control methods, it can be divided into three types: starting ball valve, electric ball valve and controlled ball valve.

[0003] A wear-resistant and high-temperature resistant ball valve with announcement number CN209511176U is composed of a valve body as the main body, a ball is rotatably installed on the inside of the valve body, a valve stem is fixed to the top side end of the ball, a nut is inserted into the top end of the valve stem, and a handle is provided at the connection between the nut and the valve stem, and a first head is provided at the connection between the valve body and the bottom end of the valve seat. The first head is fixedly connected to the valve body and the valve seat by a first fixing bolt, and a first pressure plate is fixedly connected to the first head by a second fixing bolt. When the ball valve is in use, the first fixing bolt and the second fixing bolt can be unscrewed, the first head and the first pressure plate can be taken out, and the semi-thread thread plug can be separated from the ball, thereby facilitating the cleaning of the inside of the ball and the subsequent maintenance of the ball valve.

[0004] There is still a problem in the above-mentioned wear-resistant and high-temperature resistant ball valve. When the ball valve is used in a high-temperature environment, the wear-resistant coating and the sealing ring coated on the ball are prone to aging in the high-temperature environment, resulting in the ball valve being unable to be used normally. Therefore, a high-temperature resistant ball valve is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, when the ball valves on the market are used in a high temperature environment, the wear-resistant coating and the sealing ring coated on the ball are prone to aging in the high temperature environment, resulting in the problem that the ball valve cannot be used normally. The utility model proposes a high temperature resistant ball valve.

[0006] The technical solution adopted by the utility model to solve its technical problem is: the high-temperature resistant ball valve described in the utility model includes a valve body; a control mechanism is arranged inside the valve body, a heat dissipation mechanism is arranged on one side of the valve body, a sealing mechanism is arranged inside the valve body, and a ball is rotatably mounted inside the valve body.

[0007] Preferably, the control mechanism comprises a sphere, a cavity is provided inside the sphere, a support plate is fixed inside the cavity, a push rod is fixed on the top side of the sphere, and the inner side of the push rod is connected with the inner side of the cavity, a round rod is fixed on the bottom side of the sphere, and the inner side of the round rod is connected with the inner side of the cavity, through holes are provided on the circumferential surfaces of the push rod and the round rod, the inner side of the cavity is filled with coolant, a valve stem is fixed on the top of the push rod, and the push rod is rotatably connected to the valve body, a groove is provided on the inner circumferential surface of the valve body, a sealing gasket is fixed on the circumferential surface of the sphere at the groove, a frustum is fixed on the top side of the valve body, a limiting groove is provided on the top side of the frustum, and the valve stem is slidably installed on the inner side of the limiting groove, and hollow rings are respectively provided on the push rod and the round rod at the through hole. By providing a cavity inside the sphere, with the cooperation of the coolant inside the sphere, the temperature of the sphere is kept within a normal range, thereby extending the service life of the ball valve.

[0008] Preferably, the heat dissipation mechanism includes a hollow ring, a rubber ring is fixed on the inner side of the hollow ring, a conduit is fixedly connected to the circumferential surface of the hollow ring, one end of the conduit is fixedly connected to a hollow plate, a heat dissipation fin is fixed to the side of the hollow plate, a base is fixed to the bottom side of the valve body, the conduit is respectively installed on the base and the circumferential surface of the frustum, sealing grooves are provided at both ends of the inner side of the valve body, and the use of heat dissipation fins can increase the contact area between the hollow plate and the air, thereby improving the heat dissipation efficiency and keeping the ball valve always within a suitable temperature range.

[0009] Preferably, the sealing mechanism includes a sealing groove, a sealing ring is installed on the inner side of the sealing groove, and the sealing ring is sleeved on the circumferential surface of the top rod and the round rod, the bottom end of the round rod is rotatably connected to the base through a rolling bearing, and a bottom plate is fixed to the bottom side of the base. The use of a sealing ring has a simple structure and low cost, and is wear-resistant and corrosion-resistant, so that the ball valve will not leak during use.

[0010] The utility model is beneficial in that:

[0011] 1. The utility model adopts a structural design of a high-temperature resistant ball valve. By setting a control mechanism, when the valve body is in an open state, the sealing gasket is located inside the groove, and the sealing gasket will not be squeezed. A cavity is opened inside the ball, and the inside of the cavity is filled with coolant. Heat will not be transferred from the inside of the ball to the sealing gasket, preventing it from aging in a high-temperature environment. When the ball valve is closed, the valve stem is rotated to drive the ball to rotate. At this time, the sealing gasket blocks the output ports on both sides. At this time, the coolant inside the cavity can absorb the heat of the sealing gasket to prevent it from aging, thereby extending the service life of the ball valve and solving the problem that the existing ball valve is easily aged and damaged in a high-temperature environment.

[0012] 2. The utility model adopts a structural design of a high-temperature resistant ball valve and sets a heat dissipation mechanism. After the coolant inside the cavity absorbs heat and heats up, it flows toward the top rod and flows out from the through hole. When the coolant flows to the inside of the hollow plate through the conduit, the coolant is cooled with the cooperation of the heat dissipation fins. The cooled coolant flows from the conduit to the hollow ring on the bottom side, and then flows back to the inside of the cavity through the through holes on the circumferential surface of the round rod, so that it circulates, thereby realizing the function of dissipating heat for the coolant inside the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure;

[0015] Figure 2 It is a cross-sectional view of the main three-dimensional structure of the control mechanism;

[0016] Figure 3 It is a side view of the three-dimensional structure of the heat dissipation mechanism;

[0017] Figure 4 It is a side view of a three-dimensional structure section view of a part of the structure;

[0018] Figure 5 It is a schematic diagram of the overall rear-view stereoscopic structure.

[0019] In the figure: 1. valve body; 2. groove; 3. sphere; 4. sealing gasket; 5. cavity; 6. support plate; 7. push rod; 8. round rod; 9. through hole; 10. valve stem; 11. hollow ring; 12. conduit; 13. rubber ring; 14. hollow plate; 15. cooling fin; 16. sealing groove; 17. sealing ring; 18. base; 19. rolling bearing; 20. bottom plate; 21. truncated cone; 22. limit groove; 23. thermal insulation pad. DETAILED DESCRIPTION

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

[0021] See also Figure 1-4As shown, a high temperature resistant ball valve comprises a valve body 1; a control mechanism is arranged inside the valve body 1, a heat dissipation mechanism is arranged on one side of the valve body 1, a sealing mechanism is arranged inside the valve body 1, and a ball 3 is rotatably mounted inside the valve body 1;

[0022] See also Figure 2 As shown, the control mechanism includes a sphere 3, a cavity 5 is provided inside the sphere 3, a support plate 6 is fixed inside the cavity 5, a push rod 7 is fixed on the top side of the sphere 3, and the inner side of the push rod 7 is connected with the inner side of the cavity 5, a round rod 8 is fixed on the bottom side of the sphere 3, and the inner side of the round rod 8 is connected with the inner side of the cavity 5, through holes 9 are provided on the circumferential surfaces of the push rod 7 and the round rod 8, the inner side of the cavity 5 is filled with coolant, a valve stem 10 is fixed on the top of the push rod 7, and the push rod 7 is rotatably connected to the valve body 1, a groove 2 is provided on the inner circumferential surface of the valve body 1, a sealing gasket 4 is fixed on the circumferential surface of the sphere 3 at the groove 2, a round table 21 is fixed on the top side of the valve body 1, a limiting groove 22 is provided on the top side of the round table 21, and the valve stem 10 is slidably installed On the inner side of the limit groove 22, hollow rings 11 are respectively mounted on the push rod 7 and the round rod 8 at the through hole 9; during operation, when the ball valve is in a high temperature environment and its sealing structure is prone to aging, through the structure of the control mechanism, when the valve body 1 is in an open state, the sealing gasket 4 is located on the inner side of the groove 2, and the sealing gasket 4 will not be squeezed, and a cavity 5 is opened on the inner side of the ball 3, and the inner side of the cavity 5 is filled with coolant, and heat will not be transferred from the inner side of the ball 3 to the sealing gasket 4, preventing it from aging in a high temperature environment. When closing the ball valve, rotate the valve stem 10 to drive the ball 3 to rotate, and the sealing gasket 4 will block the output ports on both sides. At this time, the coolant inside the cavity 5 can absorb the heat of the sealing gasket 4 to prevent it from aging, thereby extending the service life of the ball valve.

[0023] See also Figure 3 As shown, the heat dissipation mechanism includes a hollow ring 11, a rubber ring 13 is fixed inside the hollow ring 11, a conduit 12 is fixedly connected to the circumference of the hollow ring 11, one end of the conduit 12 is fixedly connected to a hollow plate 14, a heat dissipation fin 15 is fixed to the side of the hollow plate 14, a base 18 is fixed to the bottom side of the valve body 1, the conduit 12 is respectively installed on the base 18 and the circumference of the truncated table 21, and sealing grooves 16 are provided at both ends of the inner side of the valve body 1; when working, when the ball valve temperature is too high, the sealing groove 16 is provided on the inner side of the valve body 1. When the problem of high temperature is encountered, through the structure of the heat dissipation mechanism, the coolant inside the cavity 5 absorbs heat and heats up, then flows to the top rod 7 and flows out from the through hole 9. When the coolant flows to the inside of the hollow plate 14 through the conduit 12, the coolant is cooled with the cooperation of the heat dissipation fins 15. The cooled coolant flows from the conduit 12 to the hollow ring 11 on the bottom side, and then flows back to the inside of the cavity 5 through the through hole 9 on the circumferential surface of the round rod 8, so that it circulates, thereby realizing the function of heat dissipation of the coolant inside the cavity 5.

[0024] See also Figure 4 As shown, the sealing mechanism includes a sealing groove 16, a sealing ring 17 is installed on the inner side of the sealing groove 16, and the sealing ring 17 is sleeved on the circumferential surface of the push rod 7 and the round rod 8, and the bottom end of the round rod 8 is rotatably connected with the base 18 through a rolling bearing 19, and a bottom plate 20 is fixed to the bottom side of the base 18; during operation, when encountering the problem of easy leakage at the connection inside the ball valve, through the structure of the sealing mechanism, the sealing ring 17 is sleeved at the connection between the push rod 7 and the round rod 8 and the valve body 1, and with the cooperation of the sealing ring 17, the inner side of the valve body 1 is in a sealed environment, and at the same time, with the cooperation of the rolling bearing 19, the friction force of the ball 3 during rotation can be reduced, making the ball valve easier to use.

[0025] See also Figure 5 As shown, a heat insulating pad 23 is fixed to the side of the valve body 1 inside the hollow plate 14; during operation, when the temperature of the valve body 1 is high and affects the heat dissipation effect of the hollow plate 14, the heat insulating pad 23 is used to separate the hollow plate 14 from the valve body 1, so that the coolant can circulate in the conduit 12 and the inside of the hollow plate 14 after absorbing heat, thereby ensuring that the heat dissipation effect will not decrease.

[0026] Working principle: the opening and closing parts of the ball valve are spherical, and are caused to rotate around the axis of the ball valve to control the opening and closing of the valve, thereby realizing the functions of controlling the diversion, confluence and switching flow direction of the medium. According to different control methods, it can be divided into three types: starting ball valve, electric ball valve and controlled ball valve. When the existing ball valve is used in a high temperature environment, the wear-resistant coating and sealing structure coated on the opening and closing parts are prone to aging in a high temperature environment, resulting in the ball valve being unable to be used normally. In order to solve this problem, a control mechanism and a heat dissipation mechanism are provided. When the valve body 1 is in an open state, the sealing gasket 4 is located on the inner side of the groove 2. At this time, the sealing gasket 4 will not be squeezed, and a cavity 5 is opened on the inner side of the ball 3, and the inner side of the cavity 5 is filled with coolant. Heat will not be transferred from the inside of the ball 3 to the sealing gasket 4 to prevent it from aging in a high temperature environment. When closing the ball valve, the valve stem 10 is rotated to drive the ball 3 to rotate. At this time, the sealing gasket 4 blocks the output ports on both sides. At this time, the air The cooling liquid inside the cavity 5 can absorb the heat of the sealing gasket 4 to prevent it from aging. At the same time, after the cooling liquid inside the cavity 5 absorbs heat and heats up, it flows to the top side of the push rod 7 and flows out from the through hole 9. When the cooling liquid flows to the inside of the hollow plate 14 through the conduit 12, the cooling liquid is cooled with the cooperation of the heat dissipation fins 15. The cooled cooling liquid flows from the conduit 12 to the hollow ring 11 on the bottom side, and then flows back to the inside of the cavity 5 through the through hole 9 on the circumferential surface of the round rod 8, so that it circulates, thereby playing a heat dissipation function for the ball valve, so that it is always kept within a suitable temperature range. During the use of the ball valve, the connection between the push rod 7 and the round rod 8 and the valve body 1 is provided with a sealing ring 17. With the cooperation of the sealing ring 17, the inside of the valve body 1 is in a sealed environment. At the same time, with the cooperation of the rolling bearing 19, the friction force when the ball 3 rotates can be reduced, making the ball valve more convenient to use, solving the problem that the existing ball valve is prone to aging and damage in a high temperature environment.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A high temperature resistant ball valve, characterized in that: It comprises a valve body (1); a control mechanism is arranged on the inner side of the valve body (1); a heat dissipation mechanism is arranged on one side of the valve body (1); a sealing mechanism is arranged on the inner side of the valve body (1); and a ball (3) is rotatably mounted on the inner side of the valve body (1); The control mechanism comprises a sphere (3), a cavity (5) is formed inside the sphere (3), a support plate (6) is fixed inside the cavity (5), a push rod (7) is fixed on the top side of the sphere (3), and the inside of the push rod (7) is connected to the inside of the cavity (5), a round rod (8) is fixed on the bottom side of the sphere (3), and the inside of the round rod (8) is connected to the inside of the cavity (5), through holes (9) are formed on the circumferential surfaces of the push rod (7) and the round rod (8), the inside of the cavity (5) is filled with cooling liquid, a valve stem (10) is fixed on the top end of the push rod (7), and the push rod (7) is rotatably connected to the valve body (1).

2. A high temperature resistant ball valve according to claim 1, characterized in that: A groove (2) is provided on the inner circumferential surface of the valve body (1); a sealing gasket (4) is fixed on the circumferential surface of the spherical body (3) at the groove (2); a truncated cone (21) is fixed on the top side of the valve body (1); a limiting groove (22) is provided on the top side of the truncated cone (21); and the valve stem (10) is slidably mounted on the inner side of the limiting groove (22); and hollow rings (11) are respectively mounted on the top rod (7) and the round rod (8) at the through hole (9).

3. A high temperature resistant ball valve according to claim 2, characterized in that: The heat dissipation mechanism comprises a hollow ring (11), a rubber ring (13) is fixed inside the hollow ring (11), a conduit (12) is fixedly connected to the circumferential surface of the hollow ring (11), one end of the conduit (12) is fixedly connected to a hollow plate (14), and a heat dissipation fin (15) is fixed to the side of the hollow plate (14).

4. A high temperature resistant ball valve according to claim 3, characterized in that: A base (18) is fixed on the bottom side of the valve body (1), and the conduit (12) is respectively inserted and installed on the base (18) and the circumferential surface of the truncated cone (21). Sealing grooves (16) are provided at both ends of the inner side of the valve body (1).

5. A high temperature resistant ball valve according to claim 4, characterized in that: The sealing mechanism comprises a sealing groove (16), a sealing ring (17) is installed inside the sealing groove (16), and the sealing ring (17) is sleeved on the circumferential surfaces of the top rod (7) and the round rod (8).

6. A high temperature resistant ball valve according to claim 5, characterized in that: The bottom end of the round rod (8) is rotatably connected to the base (18) through a rolling bearing (19), and a bottom plate (20) is fixed to the bottom side of the base (18).

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