Ultralow-temperature ball valve

Abstract

The utility model provides an ultra-low temperature ball valve, which relates to the technical field of ball valves, and comprises a valve body, a ball body is arranged in the valve body, the upper surface of the ball body is fixedly connected with a valve rod, a protection device is arranged at the bottom of the valve body, the protection device comprises a fixed pipe, the fixed pipe is arranged at the bottom of the valve body in a sliding insertion manner, and the valve rod is fixedly connected with the valve rod. The end, located outside the valve body, of the fixing pipe is fixedly connected with a fixing plate, one side of the fixing plate is fixedly connected with two symmetrical springs, one end of each spring is fixedly connected with the valve body, a reserved hole is formed in the arc surface of the fixing pipe, and the arc surface, located outside the valve body, of the fixing pipe is fixedly connected with a discharging pipe. According to the ball valve, the effect of discharging residual water stains in the ball body is achieved through the protection device, and the situation that the service life of the valve body is shortened due to the fact that the residual water is frozen in the cold environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to an ultra-low temperature ball valve. Background Art

[0002] Ultra-low temperature fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments were specially considered during design, and it is suitable for various corrosive and non-corrosive media.

[0003] After the ball valve of the prior art is closed after use, the transported liquid is likely to remain in the internal channel of the ball valve. When the temperature is low, the liquid inside is likely to freeze. When the ball valve is opened again, these ice cubes are likely to scratch the sealing ring inside the ball valve, which will easily reduce the service life of the ball valve. Utility Model Content

[0004] The utility model provides an ultra-low temperature ball valve in order to solve the shortcomings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a cryogenic ball valve, comprising a valve body, a sphere is arranged inside the valve body, a valve stem is fixedly connected to the upper surface of the sphere, a protective device is provided at the bottom of the valve body, the protective device comprises a fixed tube, the fixed tube is slidably arranged at the bottom of the valve body, one end of the fixed tube located outside the valve body is fixedly connected to a fixed plate, two symmetrical springs are fixedly connected to one side of the fixed plate, one end of the spring is fixedly connected to the valve body, a reserved hole is opened on the circular arc surface of the fixed tube, and a discharge pipe is fixedly connected to the circular arc surface of the fixed tube located outside the valve body.

[0006] The effect achieved by the above components is: when the valve body is not needed, the staff rotates the ball through the valve stem, and the valve body is closed. At this time, the staff presses the fixed plate, and the fixed plate moves with the fixed tube toward the inside of the sphere. Finally, the reserved hole on the fixed tube enters the inside of the sphere, and the spring contracts. The residual liquid inside the sphere enters the inside of the fixed tube through the reserved hole, and finally is discharged to the outside of the valve body through the discharge pipe. After that, the staff loosens the fixed plate, and under the action of the spring return force, the reserved hole on the fixed tube fits with the valve body, achieving the effect of sealing between the fixed tube and the sphere. The protective device achieves the effect of discharging the residual water stains inside the sphere, thereby preventing the residual water from freezing in a cold environment, thereby affecting the service life of the valve body.

[0007] Preferably, a plurality of anti-slip strips are fixedly connected to one side of the fixing plate, and the plurality of anti-slip strips are linearly distributed.

[0008] The effect achieved by the above components is: by providing the anti-slip strips, the friction between the staff's hands and the fixed plate is increased, making it easier for the staff to press the fixed plate.

[0009] Preferably, a telescopic rod is provided inside the spring, and two ends of the telescopic rod are fixedly connected to the valve body and the fixing plate respectively.

[0010] The effect achieved by the above components is: by setting the telescopic rod, the moving direction of the fixed pipe and the fixed plate is restricted, thereby preventing the fixed pipe from shaking.

[0011] Preferably, a sealing ring is fixedly connected to the interior of the valve body, and a limiting groove is provided on the fixed tube corresponding to the sealing ring, and the size of the limiting groove is adapted to the size of the sealing ring.

[0012] The effect achieved by the above components is that when the fixed pipe moves, the sealing ring moves in the limit groove of the fixed pipe, thereby sealing the gap between the valve body and the fixed pipe, preventing water from flowing out of the gap.

[0013] Preferably, an auxiliary device is provided at one end of the valve stem, and the auxiliary device includes a guide tube, the guide tube is fixedly connected to one end of the valve stem, a guide plate is slidably connected inside the guide tube, and a pull rod is fixedly connected to one side of the guide plate.

[0014] The effect achieved by the above components is: when the valve stem needs to be moved, the staff moves the guide plate through the pull rod, the guide plate moves in the guide tube, and the total length between the guide plate and the guide tube becomes longer. At this time, the staff rotates the pull rod again, and the auxiliary device is used to achieve the effect of changing the total length between the guide plate and the guide tube, thereby increasing the force arm of the valve stem, making it easier for the staff to operate the valve stem.

[0015] Preferably, a second magnet is fixedly connected to the upper surface of the guide plate, and a first magnet is fixedly connected to the upper surface of the guide tube. The first magnet and the second magnet attract each other.

[0016] The effect achieved by the above components is that the guide plate enters the interior of the guide tube under the mutual attraction between the second magnet and the first magnet, making it convenient for the staff to store the guide plate.

[0017] Preferably, the arc surface of the pull rod is covered with an anti-slip cover, and the anti-slip cover is a rubber cover.

[0018] The effect achieved by the above components is that the anti-slip sleeve makes it easier for workers to move the pull rod, bringing convenience to the workers.

[0019] Preferably, both sides of the guide plate are fixedly connected to limit blocks, and limit holes are provided on the guide tube corresponding to the limit blocks, and the limit blocks are slidably fitted in the limit holes.

[0020] The effect achieved by the above components is: by the limit block moving in the limit hole, the moving direction of the guide plate is limited, thereby preventing the guide plate from rotating.

[0021] In summary, the beneficial effects of the present invention are as follows:

[0022] When the valve body is not needed, the staff rotates the ball through the valve stem to close the valve body. At this time, the staff presses the fixed plate, and the fixed plate moves the fixed tube toward the inside of the ball. Finally, the reserved hole on the fixed tube enters the inside of the ball, and the spring contracts. The residual liquid inside the ball enters the inside of the fixed tube through the reserved hole, and finally is discharged to the outside of the valve body through the discharge pipe. After that, the staff loosens the fixed plate, and under the action of the spring return force, the reserved hole on the fixed tube fits with the valve body, achieving the effect of sealing between the fixed tube and the ball. The protective device achieves the effect of discharging the residual water stains inside the ball, avoiding the residual water from freezing in a cold environment, thereby affecting the service life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 For this utility model Figure 1 sectional view of

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective device of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the auxiliary device of the utility model.

[0027] Legend: 1. Valve body; 2. Ball; 3. Valve stem; 4. Protective device; 41. Fixed tube; 42. Reserved hole; 43. Fixed plate; 44. Spring; 45. Discharge pipe; 46. Telescopic rod; 47. Sealing ring; 48. Limiting groove; 49. Anti-slip strip; 5. Auxiliary device; 51. Guide tube; 52. Guide plate; 53. Pull rod; 54. Anti-slip sleeve; 55. First magnet; 56. Second magnet; 57. Limiting block; 58. Limiting hole. DETAILED DESCRIPTION

[0028] Reference Figure 1-4As shown, this embodiment discloses an ultra-low temperature ball valve, including a valve body 1, a ball 2 is arranged inside the valve body 1, a valve stem 3 is fixedly connected to the upper surface of the ball 2, a protective device 4 is provided at the bottom of the valve body 1, and an auxiliary device 5 is provided at one end of the valve stem 3.

[0029] Reference Figure 1-4 As shown, the protective device 4 includes a fixed tube 41, which is slidably inserted into the bottom of the valve body 1, and one end of the fixed tube 41 located outside the valve body 1 is fixedly connected to a fixed plate 43, and one side of the fixed plate 43 is fixedly connected to two mutually symmetrical springs 44, one end of the spring 44 is fixedly connected to the valve body 1, and a reserved hole 42 is opened on the arc surface of the fixed tube 41, and the arc surface of the fixed tube 41 located outside the valve body 1 is fixedly connected to a discharge pipe 45. When the valve body 1 is not needed, the staff rotates the ball 2 through the valve stem 3, and the valve body 1 is closed. At this time, the staff presses the fixing plate 43, and the fixing plate 43 moves with the fixing tube 41 toward the inside of the ball 2. Finally, the reserved hole 42 on the fixing tube 41 enters the inside of the ball 2, and the spring 44 contracts. The residual liquid inside the ball 2 enters the inside of the fixing tube 41 through the reserved hole 42, and is finally discharged to the outside of the valve body 1 through the discharge pipe 45. After that, the staff loosens the fixing plate 43, and under the action of the reset elastic force of the spring 44, the reserved hole 42 on the fixing tube 41 fits with the valve body 1, achieving the effect of sealing between the fixing tube 41 and the ball 2. The protective device 4 is used to discharge the residual water stains inside the ball 2, thereby preventing the residual water from freezing in a cold environment, thereby affecting the service life of the valve body 1.

[0030] Reference Figure 1-4 As shown, a plurality of anti-slip strips 49 are fixedly connected to one side of the fixed plate 43, and the plurality of anti-slip strips 49 are linearly distributed. By providing the anti-slip strips 49, the friction between the staff's hands and the fixed plate 43 is increased, making it easier for the staff to press the fixed plate 43. A telescopic rod 46 is provided inside the spring 44, and the two ends of the telescopic rod 46 are fixedly connected to the valve body 1 and the fixed plate 43 respectively. By providing the telescopic rod 46, the effect of limiting the moving direction of the fixed tube 41 and the fixed plate 43 is achieved, thereby preventing the fixed tube 41 from shaking. A sealing ring 47 is fixedly connected to the inside of the valve body 1, and a limiting groove 48 is provided at the fixed tube 41 corresponding to the sealing ring 47. The size of the limiting groove 48 is adapted to the size of the sealing ring 47. During the movement of the fixed tube 41, the sealing ring 47 moves in the limiting groove 48 of the fixed tube 41, thereby sealing the gap between the valve body 1 and the fixed tube 41, thereby preventing water from flowing out of the gap.

[0031] Reference Figure 1-4As shown, the auxiliary device 5 includes a guide tube 51, which is fixedly connected to one end of the valve stem 3. A guide plate 52 is slidably connected to the interior of the guide tube 51, and a pull rod 53 is fixedly connected to one side of the guide plate 52. When the valve stem 3 needs to be moved, the staff moves the guide plate 52 through the pull rod 53. The guide plate 52 moves in the guide tube 51, and the total length between the guide plate 52 and the guide tube 51 increases. At this time, the staff rotates the pull rod 53, and the auxiliary device 5 is used to achieve the effect of changing the total length between the guide plate 52 and the guide tube 51, thereby increasing the lever arm of the valve stem 3 and facilitating the staff to operate the valve stem 3.

[0032] Reference Figure 1-4 As shown, the upper surface of the guide plate 52 is fixedly connected to a second magnet 56, and the upper surface of the guide tube 51 is fixedly connected to a first magnet 55. The first magnet 55 and the second magnet 56 attract each other. Under the action of the mutual attraction between the second magnet 56 and the first magnet 55, the guide plate 52 enters the interior of the guide tube 51, making it convenient for the staff to store the guide plate 52. The arc surface of the pull rod 53 is covered with an anti-slip sleeve 54, and the anti-slip sleeve 54 is a rubber sleeve. By providing the anti-slip sleeve 54, the effect of facilitating the staff to move the pull rod 53 is achieved, which brings convenience to the staff. Both sides of the guide plate 52 are fixedly connected to the limiting blocks 57, and the guide tube 51 is provided with limiting holes 58 corresponding to the limiting blocks 57. The limiting blocks 57 are slidably adapted to the limiting holes 58. By the limiting blocks 57 moving in the limiting holes 58, the effect of limiting the moving direction of the guide plate 52 is achieved, preventing the guide plate 52 from rotating.

[0033] Working principle: When the valve body 1 is not needed, the staff rotates the ball 2 through the valve stem 3, and the valve body 1 is closed. At this time, the staff presses the fixing plate 43 through the anti-slip strip 49, and the fixing plate 43 moves with the fixing tube 41 toward the inside of the ball 2. The sealing ring 47 on the valve body 1 moves in the limit groove 48 on the fixing tube 41 to achieve the effect of sealing the gap between the valve body 1 and the fixing tube 41. Finally, the reserved hole 42 on the fixing tube 41 enters the interior of the ball 2, and the spring 44 and the telescopic rod 46 contract, and the ball 2 The residual liquid inside enters the interior of the fixed tube 41 through the reserved hole 42, and is finally discharged to the outside of the valve body 1 through the discharge pipe 45. After that, the staff loosens the fixing plate 43. Under the action of the restoring elastic force of the spring 44, the reserved hole 42 on the fixed tube 41 fits with the valve body 1, achieving the effect of sealing between the fixed tube 41 and the sphere 2. The protective device 4 is used to discharge the residual water stains inside the sphere 2, thereby preventing the residual water from freezing in a cold environment, thereby affecting the service life of the valve body 1.

[0034] When the valve stem 3 needs to be moved, the staff moves the guide plate 52 through the pull rod 53, the guide plate 52 moves in the guide tube 51, and the limit block 57 moves in the limit hole 58, thereby achieving the effect of limiting the moving direction of the guide plate 52, and the total length between the guide plate 52 and the guide tube 51 becomes longer. At this time, the staff rotates the pull rod 53 again, and finally the staff releases the pull rod 53. Under the action of the mutual attraction between the first magnet 55 and the second magnet 56, the guide plate 52 enters the interior of the guide tube 51, and the auxiliary device 5 is used to achieve the effect of changing the total length between the guide plate 52 and the guide tube 51, thereby increasing the force arm of the valve stem 3, making it convenient for the staff to operate the valve stem 3.

Claims

1. A cryogenic ball valve, comprising a valve body (1), characterized in that: A sphere (2) is provided inside the valve body (1), and a valve stem (3) is fixedly connected to the upper surface of the sphere (2). A protective device (4) is provided at the bottom of the valve body (1), and the protective device (4) includes a fixed tube (41). The fixed tube (41) is slidably inserted at the bottom of the valve body (1), and one end of the fixed tube (41) located outside the valve body (1) is fixedly connected to a fixed plate (43), and one side of the fixed plate (43) is fixedly connected to two mutually symmetrical springs (44), and one end of the spring (44) is fixedly connected to the valve body (1). A reserved hole (42) is opened on the arc surface of the fixed tube (41), and a discharge pipe (45) is fixedly connected to the arc surface of the fixed tube (41) located outside the valve body (1).

2. The cryogenic ball valve according to claim 1, characterized in that: One side of the fixed plate (43) is fixedly connected with a plurality of anti-slip strips (49), and the plurality of anti-slip strips (49) are linearly distributed.

3. The cryogenic ball valve according to claim 1, characterized in that: A telescopic rod (46) is provided inside the spring (44), and two ends of the telescopic rod (46) are fixedly connected to the valve body (1) and the fixing plate (43) respectively.

4. The cryogenic ball valve according to claim 1, characterized in that: A sealing ring (47) is fixedly connected to the interior of the valve body (1), and a limiting groove (48) is provided on the fixed tube (41) corresponding to the sealing ring (47), and the size of the limiting groove (48) is adapted to the size of the sealing ring (47).

5. The cryogenic ball valve according to claim 1, characterized in that: An auxiliary device (5) is provided at one end of the valve stem (3), and the auxiliary device (5) includes a guide tube (51), and the guide tube (51) is fixedly connected to one end of the valve stem (3). A guide plate (52) is slidably connected inside the guide tube (51), and a pull rod (53) is fixedly connected to one side of the guide plate (52).

6. The cryogenic ball valve according to claim 5, characterized in that: The upper surface of the guide plate (52) is fixedly connected to a second magnet (56), and the upper surface of the guide tube (51) is fixedly connected to a first magnet (55), and the first magnet (55) and the second magnet (56) attract each other.

7. The cryogenic ball valve according to claim 5, characterized in that: The arc surface of the pull rod (53) is covered with an anti-slip sleeve (54), and the anti-slip sleeve (54) is a rubber sleeve.

8. The cryogenic ball valve according to claim 5, characterized in that: Both sides of the guide plate (52) are fixedly connected to limit blocks (57); the guide tube (51) is provided with limit holes (58) corresponding to the limit blocks (57); and the limit blocks (57) are slidably fitted with the limit holes (58).

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