Novel adjustable semi-ball valve

Abstract

The novel adjustable semi-ball valve comprises a valve body and a semi-ball body, the semi-ball body is arranged in the valve body, a spherical crown is arranged on one side of the semi-ball body, a limiting groove is formed in the semi-ball body, a limiting plate is connected into the limiting groove in a sliding mode, and the limiting plate is fixedly connected with the spherical crown. A limiting groove is formed in the bottom end of the spherical crown, a threaded hole is formed in the bottom end of the limiting groove, a fixing screw is arranged in the threaded hole and penetrates through the spherical crown, a containing groove is formed in the bottom end of the threaded hole, a telescopic spring is arranged in the containing groove and fixedly connected with the spherical crown, and a valve seat is arranged on one side of the spherical crown. A graphite sealing ring is arranged on the periphery of the valve seat. The ball valve is novel in design, simple in structure and high in sealing performance, media are not prone to leakage, meanwhile, a worker can adjust the ball crown conveniently, therefore, a gap is not prone to being generated between the ball crown and the valve seat, the sealing effect of the ball valve is greatly improved, and the ball valve is practical.

Description

Technical Field

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

[0002] Semi-ball valve is a relatively new type of ball valve. The ball valve is easy to open and close, small in size, can be made into a large diameter, has reliable sealing, simple structure, and easy maintenance. The sealing surface and the spherical surface are often in a closed state and are not easily eroded by the medium. It is widely used in various industries.

[0003] However, the semi-ball valves currently used in the papermaking, pharmaceutical, dye chemical, alumina slurry and other industries on the market have the following disadvantages: poor sealing, easy leakage of the medium, inconvenience for the staff to adjust the internal structure of the valve body, and short service life, which can no longer meet people's needs. For this reason, we propose a new adjustable semi-ball valve. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a new type of adjustable semi-ball valve with novel design, simple structure and strong sealing performance, so that the medium is not easy to leak. At the same time, it is convenient for the staff to adjust the ball crown, so that it is not easy to produce a gap between the ball crown and the valve seat, which greatly improves the sealing effect of the semi-ball valve. It is more practical and can solve the problems raised in the above-mentioned background technology.

[0005] The technical problem solved by the utility model is achieved by the following technical solutions:

[0006] A novel adjustable hemispherical valve comprises a valve body and a hemispherical body, wherein the hemispherical body is arranged inside the valve body, a spherical crown is arranged on one side of the hemispherical body, a limiting groove is arranged inside the hemispherical body, a limiting plate is slidably connected inside the limiting groove, and the limiting plate is fixedly connected to the spherical crown, a threaded hole is arranged at the bottom end of the limiting groove, a fixing screw is arranged inside the threaded hole, and the fixing screw passes through the spherical crown, a receiving groove is arranged at the bottom end of the threaded hole, a telescopic spring is arranged inside the receiving groove, and the telescopic spring is fixedly connected to the spherical crown, a valve seat is arranged on one side of the spherical crown, a graphite sealing ring is arranged on the periphery of the valve seat, a rubber pad is arranged on one side of the valve seat, a fixing ring is arranged on one side of the rubber pad, a threaded groove is arranged on the periphery of the fixing ring, and locking screws are arranged on both the upper and lower ends of the fixing ring.

[0007] Furthermore, a rotating shaft is arranged at one end of the hemisphere, and the rotating shaft is located inside the bottom end of the valve body, a sealed bearing is fixedly connected to the periphery of the rotating shaft, a sealing gasket is fixedly connected to the top of the sealed bearing, a sealing cover plate is arranged at the bottom end of the sealed bearing, and the sealing cover plate is fixedly connected to the valve body.

[0008] Furthermore, a valve stem is arranged at the other end of the hemisphere, and the valve stem passes through the top of the valve body, a packing is arranged around the valve stem, and the packing is located inside the top of the valve body, a valve cover is arranged at the top of the packing, and the valve stem passes through the inside of the valve cover.

[0009] Furthermore, a bracket is fixedly connected to the bottom end of the valve body, a drive box is fixedly connected to the top end of the bracket, a drive hand wheel is rotatably connected to one side of the drive box, a feed port is arranged on one side of the valve body, and a discharge port is arranged on the other side of the valve body.

[0010] Furthermore, the spherical crown is fixedly connected to the hemisphere through fixing screws and threaded holes, the valve seat, rubber pad and fixing ring are all located inside one end of the valve body, and the fixing ring is threadedly connected to the valve body through a threaded groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Through the combination of fixing screws and threaded holes, the ball crown can be fixed on one side of the hemisphere, so that the ball crown can work stably. When the ball crown is worn out due to long-term contact with the valve seat, the staff can loosen the fixing screws, and the telescopic spring will push the ball crown, so that the ball crown can be displaced to a certain extent, so that the ball crown can be in close contact with the valve seat, greatly improving the sealing effect of the hemisphere valve and making it difficult for the medium to leak.

[0013] 2. Through the combination of the limit groove and the limit plate, the position of the ball crown can be well limited to prevent the ball crown from being displaced during operation and to avoid affecting its own sealing effect. It is more practical. At the same time, through the combination of the fixed ring and the threaded groove, it is convenient for the staff to fix the valve seat well, so that it is not easy to be displaced during operation, and the locking screw can be used to lock the fixed ring well, so that it is not easy to loosen during operation. It is more practical.

[0014] 3. Through the combination of the sealing bearing and the sealing gasket, the sealing degree of the bottom of the valve body can be effectively improved. At the same time, the sealing cover plate can well protect the sealing bearing, making it less likely to be damaged, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the spherical crown structure of the utility model. DETAILED DESCRIPTION

[0017] In order to make the technical means for realizing the utility model, creative features, objectives and effects easy to understand, the utility model is further explained below with reference to specific illustrations.

[0018] like Figures 1-2 As shown, the medium flows into the valve body 1 through the feed port 26, so that the hemispherical valve can work. The combination of the ball crown 3 and the valve seat 10 can make the hemispherical valve seal and block the medium, so that the medium is not easy to flow out from the discharge port 27 when the hemispherical valve is closed. When the staff needs to open the hemispherical valve, they can drive the valve stem 20 to rotate by rotating the driving hand wheel 25 to the left and right through the driving box 24, so that the hemispherical body 2 can be rotated, so as to open and close the hemispherical valve and make the medium flow out from the discharge port 27. By combining the fixing screw 7 and the threaded hole 6, the ball crown 3 can be fixed on one side of the hemispherical body 2, so that the ball crown 3 can work stably. When the ball crown 3 is worn out after being in contact with the valve seat 10 for a long time, the staff can loosen the fixing screw 7, and the telescopic spring 8 will push the ball crown 3, so that the ball crown 3 can be displaced to a certain extent, so that the ball crown 3 can be in close contact with the valve seat 10, greatly improving the sealing effect of the hemispherical valve, making it difficult for the medium to leak. Among them, through the combination of the limit groove 4 and the limit plate 5 The ball crown 3 can be well positioned to prevent displacement of the ball crown 3 during operation, thereby avoiding affecting its own sealing effect. The graphite sealing ring 11 can effectively improve the sealing effect between the valve seat 10 and the inner wall of the valve body 1. The combination of the fixing ring 13 and the threaded groove 14 makes it easy for the staff to fix the valve seat 10 well, so that it is not easy to be displaced during operation. The rubber pad 12 can effectively improve the sealing effect between the fixing ring 13 and the valve seat 10. At the same time, the fixing ring 13 can be tightened by the locking screw 15. The ring 13 has a good locking effect, so that it is not easy to loosen during operation, which is more practical. Through the combination of the valve cover 22 and the packing 21, the top of the valve body 1 can be well sealed, so that the medium is not easy to leak from the top of the valve body 1. Through the combination of the sealing bearing 17 and the rotating shaft 16, the hemispherical body 2 is easy to rotate, and through the combination of the sealing bearing 17 and the sealing gasket 18, the sealing degree of the bottom of the valve body 1 can be effectively improved. At the same time, the sealing cover plate 19 can well protect the sealing bearing 17, so that it is not easy to cause damage, which is more practical.

[0019] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel adjustable hemispherical valve, comprising a valve body (1) and a hemispherical body (2), wherein the hemispherical body (2) is arranged inside the valve body (1), and characterized in that: A spherical cap (3) is arranged on one side of the hemispherical body (2), a limiting groove (4) is arranged inside the hemispherical body (2), a limiting plate (5) is slidably connected inside the limiting groove (4), and the limiting plate (5) is fixedly connected to the spherical cap (3), a threaded hole (6) is arranged at the bottom end of the limiting groove (4), a fixing screw (7) is arranged inside the threaded hole (6), and the fixing screw (7) passes through the spherical cap (3), a receiving groove (8) is arranged at the bottom end of the threaded hole (6), a telescopic spring (9) is arranged inside the receiving groove (8), and the telescopic spring (9) is fixedly connected to the spherical cap (3), and the spherical cap (3) A valve seat (10) is arranged on one side, a graphite sealing ring (11) is arranged on the periphery of the valve seat (10), a rubber pad (12) is arranged on one side of the valve seat (10), a fixing ring (13) is arranged on one side of the rubber pad (12), a thread groove (14) is arranged on the periphery of the fixing ring (13), and locking screws (15) are arranged on both upper and lower ends of the fixing ring (13).

2. A novel adjustable hemispherical valve according to claim 1, characterized in that: A rotating shaft (16) is arranged at one end of the hemispherical body (2), and the rotating shaft (16) is located inside the bottom end of the valve body (1); a sealing bearing (17) is fixedly connected to the periphery of the rotating shaft (16); a sealing gasket (18) is fixedly connected to the top end of the sealing bearing (17); a sealing cover plate (19) is arranged at the bottom end of the sealing bearing (17), and the sealing cover plate (19) is fixedly connected to the valve body (1).

3. A novel adjustable hemispherical valve according to claim 1, characterized in that: A valve stem (20) is arranged at the other end of the hemispherical body (2), and the valve stem (20) passes through the top of the valve body (1); a packing (21) is arranged on the periphery of the valve stem (20), and the packing (21) is located inside the top end of the valve body (1); a valve cover (22) is arranged at the top end of the packing (21), and the valve stem (20) passes through the inside of the valve cover (22).

4. A novel adjustable hemispherical valve according to claim 1, characterized in that: The bottom end of the valve body (1) is fixedly connected to a bracket (23), the top end of the bracket (23) is fixedly connected to a drive box (24), one side of the drive box (24) is rotatably connected to a drive hand wheel (25), one side of the valve body (1) is provided with a feed port (26), and the other side of the valve body (1) is provided with a discharge port (27).

5. The novel adjustable hemispherical valve according to claim 1 is characterized in that: The spherical crown (3) is fixedly connected to the hemispherical body (2) via a fixing screw (7) and a threaded hole (6); the valve seat (10), the rubber pad (12) and the fixing ring (13) are all located inside one end of the valve body (1); and the fixing ring (13) is threadedly connected to the valve body (1) via a threaded groove (14).

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