Ball valve easy to rotate

Abstract

The embodiment of the utility model discloses a ball valve easy to rotate, relates to the technical field of valves, and aims to solve the problems that the rotating friction resistance in the ball valve is larger, and a valve core is difficult to rotate. The ball valve comprises a valve seat, a transmission shaft, a valve element and a sealing seat. The sealing seat is hermetically connected with the valve seat; a valve cavity is formed between the valve seat and the sealing seat; the valve core is arranged in the valve cavity; a plurality of sealing seat ports are formed in the sealing seat; a communicating channel is arranged on the valve core; the valve element can be rotationally arranged in the valve cavity so that the two ends of the communicating channel can communicate with any two sealing seat ports among the multiple sealing seat ports correspondingly. A first groove is formed in the valve seat, a first shaft hole is formed in the bottom of the first groove, and the first shaft hole is communicated with the valve cavity; the transmission shaft penetrates through the first shaft hole and is connected with the valve element. A first bearing seat is arranged in the first groove, a first rolling bearing is arranged in the first bearing seat, and the transmission shaft is sleeved with an inner ring of the first rolling bearing. The utility model is suitable for the scene of medium shunting, converging and mixing.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a ball valve that is easy to rotate. Background Technology

[0002] In the production processes of industries such as metallurgy and mining backfilling, three-way ball valves are commonly used to achieve the requirements of diversion, merging, and mixing of media such as slurry. Current three-way ball valves consist of a valve core and a valve seat with three flow channels. Based on the connection method between the valve core and the three flow channels, these three-way ball valves can be classified as T-type, L-type, and Y-type. Regardless of the type of three-way ball valve used, the valve core needs to be switched between different positions. This is achieved by a power source driving a drive shaft and rotating the valve core, causing the valve core to move from one position relative to the valve seat to another.

[0003] Currently, the drive shaft of the three-way ball valve commonly found on the market uses a sliding bearing structure at the upper and lower ends, which is connected to the valve core. The advantage of this structure is its compact structure and small radial dimension; however, the disadvantage is that the sliding bearing structure itself brings radial sliding friction resistance, as well as axial sliding friction resistance. Over time, the resistance will increase, eventually leading to a situation where it cannot rotate and has to be repaired or replaced. Summary of the Invention

[0004] The purpose of this utility model embodiment is to address the shortcomings of the above-mentioned technology by proposing an easily rotatable ball valve, aiming to solve the problems of large internal rotational frictional resistance and difficulty in rotating the valve core in existing ball valves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides an easily rotatable ball valve, including a valve seat, a drive shaft, a valve core, and a sealing seat; the sealing seat is sealed to the valve seat; a valve cavity is formed between the valve seat and the sealing seat; the valve core is disposed in the valve cavity; the sealing seat has multiple sealing seat ports; the valve core has a connecting channel; the valve core is rotatably disposed in the valve cavity so that both ends of the connecting channel are respectively connected to any two of the multiple sealing seat ports; the valve seat has a first groove, the bottom of the first groove has a first shaft hole, the first shaft hole is connected to the valve cavity; the drive shaft passes through the first shaft hole and is connected to the valve core; a first bearing seat is disposed in the first groove, the first bearing seat has a first rolling bearing, and the inner ring of the first rolling bearing is sleeved on the drive shaft.

[0007] Optionally, the drive shaft is provided with a shoulder, the side of the first rolling bearing near the bottom of the first groove is supported on the shoulder, and there is a gap between the side of the first rolling bearing near the bottom of the first groove and the bottom of the first groove.

[0008] Optionally, there is a gap between the side of the first bearing housing and the inner wall of the first groove.

[0009] Optionally, an oil groove is formed on the side wall of the first shaft hole; the valve seat is provided with a first oil cup, which is connected to the oil groove.

[0010] Optionally, the oil trough includes a first annular oil trough and a second annular oil trough, which are spaced apart; the oil supply pipe of the first oil cup opens between the first annular oil trough and the second annular oil trough, and is connected to the first annular oil trough and the second annular oil trough.

[0011] Optionally, the valve seat is provided with a second shaft hole, which is coaxial with the first shaft hole; a support shaft passes through the second shaft hole, the first end of the support shaft is located in the support groove on the valve core, the second end of the support shaft has a flange, and the support shaft is fixedly connected to the valve seat through the flange; the valve core can rotate around the central axis of the support shaft; a second rolling bearing is provided between the first end of the support shaft and the support groove, and the inner ring of the second rolling bearing is sleeved on the first end of the support shaft.

[0012] Optionally, the first end of the support shaft has a shoulder on its side, and the sidewall of the support groove has a support step; the first side of the second rolling bearing abuts against the shoulder on the side of the first end of the support shaft, and the second side of the second rolling bearing abuts against the support step on the sidewall of the support groove; there is a gap between the end of the first end of the support shaft and the bottom of the support groove.

[0013] Optionally, the support shaft is provided with a second oil cup, and the oil supply pipe of the second oil cup opens into the gap between the end of the first end of the support shaft and the bottom of the support groove.

[0014] The easily rotatable ball valve provided in this embodiment of the invention has a first groove on the valve seat, and a first shaft hole at the bottom of the first groove. The first shaft hole communicates with the valve cavity, and a drive shaft passes through the first shaft hole and connects to the valve core. In this way, the drive shaft only generates friction with the valve seat at the position where it mates with the first shaft hole. This results in a shorter frictional contact length between the drive shaft and the valve seat, and a relatively smaller frictional force between them. This not only facilitates the rotation of the valve core but also reduces wear on the valve seat or the drive shaft. Furthermore, by providing a first bearing seat within the first groove, and a first rolling bearing within the first bearing seat, with the inner ring of the first rolling bearing fitted onto the drive shaft, the frictional force between the drive shaft and the valve seat can be further reduced, further facilitating the rotation of the valve core. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a cross-sectional view of the overall structure of the ball valve in one embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the overall structure of the ball valve in one embodiment of the present invention, in another state.

[0019] In the diagram: 1. Valve seat; 2. Drive shaft; 201. Shoulder; 3. Valve core; 301. First connecting channel; 302. Second connecting channel; 4. Sealing seat; 401. First sealing seat opening; 402. Second sealing seat opening; 403. Third sealing seat opening; 5. Valve cavity; 6. First groove; 7. First shaft hole; 8. First bearing seat; 801. First rolling bearing; 802. Second rolling bearing; 9. Oil groove; 901. First annular oil groove; 902. Second annular oil groove; 101. First oil cup; 102. Second oil cup; 11. Second shaft hole; 12. Support shaft; 1201. Shoulder; 13. Support groove; 14. Flange. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that the terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] This utility model provides an easy-to-rotate ball valve, which can solve the problems of large internal rotational frictional resistance and difficulty in rotating the valve core in existing ball valves.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings:

[0025] See Figure 1 , Figure 2 This utility model provides an easily rotatable ball valve, including a valve seat 1, a drive shaft 2, a valve core 3, and a sealing seat 4; the sealing seat 4 is sealed to the valve seat 1; a valve cavity 5 is formed between the valve seat 1 and the sealing seat 4; the valve core 3 is disposed in the valve cavity 5; the sealing seat 4 is provided with multiple sealing seat ports; the valve core 3 is provided with connecting channels (301 and 302); the valve core 3 is rotatably disposed in the valve cavity 5 so that the two ends of the connecting channels are respectively connected to any two sealing seat ports (401 and 402, 402 and 403, 403 and 401) among the multiple sealing seat ports; the valve seat is provided with a first groove 6, the bottom of the first groove 6 is provided with a first shaft hole 7, the first shaft hole 7 is connected to the valve cavity 5; the drive shaft 2 passes through the first shaft hole 7 and is connected to the valve core 3; the first groove 6 is provided with a first bearing seat 8, the first bearing seat 8 is provided with a first rolling bearing 801, and the inner ring of the first rolling bearing 801 is sleeved on the drive shaft 2.

[0026] The transmission shaft is mounted on the valve seat and connected to the valve core, thereby driving the valve core to rotate and realize the switching of the sealing seat port. The first rolling bearing is set in the first groove and installed on the side of the transmission shaft, and is rolledly connected to the transmission shaft. That is, the first rolling bearing and the transmission shaft are rolledly connected. At the same time, the transmission shaft contacts the first rolling bearing along its radial and axial directions. This can withstand radial and axial forces, thus ensuring the support of rotation while reducing friction.

[0027] The easily rotatable ball valve provided in this embodiment of the invention has a first groove on the valve seat, and a first shaft hole at the bottom of the first groove, which communicates with the valve cavity. A drive shaft passes through the first shaft hole and connects to the valve core. In this way, the drive shaft only generates friction with the valve seat at the position where it mates with the first shaft hole. This results in a shorter frictional contact length between the drive shaft and the valve seat, and a relatively smaller frictional force between them. This not only facilitates the rotation of the valve core but also reduces wear on the valve seat or the drive shaft. Furthermore, by providing a first bearing seat within the first groove, and housing a first rolling bearing within the first bearing seat, with the inner ring of the first rolling bearing fitted onto the drive shaft, the frictional force between the drive shaft and the valve seat can be further reduced, further facilitating the rotation of the valve core.

[0028] See Figure 1 In some embodiments, the drive shaft 2 is provided with a shoulder 201, and the side of the first rolling bearing 8 near the bottom of the first groove 6 is supported on the shoulder 201, and there is a gap between the side of the first rolling bearing 8 near the bottom of the first groove 6 and the bottom of the first groove 6; in this way, the shoulder is used to support the first rolling bearing, while ensuring that there is a gap between the side of the first rolling bearing near the bottom of the first groove and the bottom of the first groove; the gap between the side of the first rolling bearing near the bottom of the first groove and the bottom of the first groove reduces the friction between the first rolling bearing and the bottom surface of the first groove, thereby reducing the wear of the first rolling bearing and improving the service life of the first rolling bearing.

[0029] The drive shaft is connected to an externally installed power unit via a key, transmitting the torque of the externally installed power unit to the valve core through the drive shaft, thereby achieving steering control of the valve core and thus switching the flow path of the ball valve.

[0030] See Figure 1 In some embodiments, there is a gap between the side of the first bearing seat 8 and the inner wall of the first groove 6; this facilitates the disassembly, installation and replacement of parts inside the groove when the operator maintains the ball valve, and also facilitates the dissipation of heat generated during rotation by the first rolling bearing and the first bearing seat.

[0031] See Figure 1 In some embodiments, an oil groove 9 is formed on the side wall of the first shaft hole 7; a first oil cup 10 is provided on the valve seat 1, and the first oil cup 10 is connected to the oil groove 9; wherein, the oil groove 9 is connected to the side gap of the transmission shaft 2, and the grease in the first oil cup flows into the side gap of the transmission shaft through the oil groove, thereby providing sufficient lubricating grease for the rotation of the transmission shaft.

[0032] See Figure 1In some embodiments, the oil groove 9 includes a first annular oil groove 901 and a second annular oil groove 902, which are spaced apart. The oil supply pipe of the first oil cup 10 opens between the first annular oil groove 901 and the second annular oil groove 902 and is connected to the first annular oil groove 901 and the second annular oil groove 902. In this way, when the drive shaft rotates, the first annular oil groove and the second annular oil groove can jointly provide lubricating grease to the surface of the drive shaft, thereby increasing the contact area between the drive shaft and the lubricating grease and improving the lubrication efficiency generated by the lubricating grease.

[0033] See Figure 1 In some embodiments, the valve seat 1 is provided with a second shaft hole 11, which is coaxial with the first shaft hole 7; a support shaft 12 is inserted through the second shaft hole 11, the first end of the support shaft 12 is located in the support groove 13 on the valve core 3, and the second end of the support shaft 12 has a flange 14, which is fixedly connected to the valve seat 1; the valve core 3 can rotate around the central axis of the support shaft 13; a second rolling bearing 802 is provided between the first end of the support shaft 12 and the support groove 13, and the inner ring of the second rolling bearing 802 is sleeved on the first end of the support shaft 12; wherein, the support shaft is set on the valve seat, and the first end is located in the support groove on the valve core to maintain the stability of the valve core during operation; the second rolling bearing is installed on the side of the transmission shaft and is in rolling connection with the support shaft, that is, the second rolling bearing and the support shaft are in rolling connection, which can reduce friction while ensuring the rotation of the support shaft.

[0034] It should be understood that the bearing types used in the first and second rolling bearings include radial ball bearings, tapered roller bearings, or thrust bearings, and the type of bearing selected can be determined according to the load size and the operating environment.

[0035] See Figure 1 In some embodiments, the first end of the support shaft 12 has a shoulder 1201 on its side, and the side wall of the support groove 13 has a support step; the first side of the second rolling bearing 802 abuts against the shoulder 1201 on the side of the first end of the support shaft 12, and the second side of the second rolling bearing 802 abuts against the support step on the side wall of the support groove 13; there is a gap between the end of the first end of the support shaft 12 and the bottom of the support groove 13; in this way, the shoulder can bear the pressure borne by the support shaft when rotating, the support step can more easily fix the support shaft, and at the same time enhance the load-bearing capacity of the support shaft, and the gap between the side of the second rolling bearing near the bottom of the support groove and the bottom of the support groove reduces the friction between the first end of the support shaft and the valve core, thereby reducing the wear of the support shaft and improving the service life of the support shaft.

[0036] See Figure 1In some embodiments, a second oil cup 102 is provided on the support shaft 12, and the oil supply pipe of the second oil cup 102 opens into the gap between the end of the first end of the support shaft 12 and the bottom of the support groove 13. In this way, the lubricating grease in the second oil cup enters the gap through the oil supply pipe and forms an oil film on the surface of the support shaft. The wear particles are trapped between the oil film, and the gap can form a storage space for lubricating grease, increasing the storage capacity of lubricating grease, so that the lubricating grease can fully lubricate the surface of the support shaft, reduce the coefficient of friction, reduce energy loss, improve mechanical efficiency, and thus protect the normal operation of the support shaft.

[0037] See Figure 2 In some examples, the ball valve includes a three-way ball valve, wherein the sealing seat is provided with a first sealing seat port 401, a second sealing seat port 402, and a third sealing seat port 403, and the first sealing seat port 401, the second sealing seat port 402, and the third sealing seat port 403 are connected through a valve core 3; the valve core 3 rotates to connect the first sealing seat port 401 with the second sealing seat port 402, or the first sealing seat port 401 with the third sealing seat port 403, or the second sealing seat port 402 with the third sealing seat port 403. The third sealing seat port 403 is connected; the included angle b between the first sealing seat port 401, the second sealing seat port 402 and the third sealing seat port 403 is 120°, that is, the first sealing seat port 401, the second sealing seat port 402 and the third sealing seat port 403 are distributed in a Y-shaped structure; and there is a connecting channel on the valve core that matches the sealing seat port, which includes a first connecting channel 301 and a second connecting channel 302, and the included angle between the first connecting channel 301 and the second connecting channel 302 is 120°.

[0038] The embodiments of this utility model have been described in detail above. Those skilled in the art can design and modify the device and its usage within the scope of this utility model according to the on-site construction conditions.

[0039] The various embodiments in this specification are described in a related manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A ball valve that is easy to turn, characterized in that, The valve seat, the transmission shaft, the valve core and the sealing seat are included. The sealing seat is in sealing connection with the valve seat, and a valve cavity is formed between the valve seat and the sealing seat. The sealing seat is provided with a plurality of sealing seat through holes, and the valve core is provided with a communication channel. The valve core is rotatably arranged in the valve cavity, so that the two ends of the communication channel are in communication with any two of the plurality of sealing seat through holes. The valve seat is provided with a first groove, and the bottom of the first groove is provided with a first shaft hole in communication with the valve cavity.

2. The easy-to-turn ball valve of claim 1, wherein The transmission shaft is arranged in the first shaft hole and connected with the valve core.

3. The easy-turn ball valve of claim 1, wherein The first bearing seat is arranged in the first groove, and the inner ring of the first rolling bearing is sleeved on the transmission shaft.

4. The easy-turn ball valve of claim 1, wherein The transmission shaft is provided with a shaft shoulder, and the first rolling bearing is supported on the shaft shoulder.

5. The easy-turn ball valve of claim 4, wherein The first bearing seat is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove.

6. The easy-turn ball valve of claim 1, wherein The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove.

7. A ball valve according to claim 6, wherein The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove.

8. A ball valve according to claim 7, wherein The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. The first oil cup is provided with a first oil cup, and the first oil cup is in communication with the oil groove. 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