A side-mounted eccentric hemispherical valve

Abstract

This utility model discloses a side-mounted eccentric hemispherical valve, which consists of a ball valve mechanism and a valve cavity backflushing mechanism. In the ball valve mechanism, a driver drives the eccentric shaft to rotate, thereby causing the ball crown to rotate eccentrically within the valve body, realizing the opening and closing of the valve. The two ports of the valve body are connected to pipes via flanges and bolts for media flow. The valve cavity backflushing mechanism can flush the valve body cavity when needed. A miniature water pump draws liquid from the tank through a suction pipe, delivers it to a straight pipe through a drain pipe, and then into a sleeve. The sleeve has multiple fan-shaped openings and spray holes, from which liquid is sprayed at multiple angles, flushing away any solid impurities that may accumulate within the valve body, preventing abnormal wear on the ball crown and the internal coating of the valve body. A liquid level sensor monitors the liquid level in the tank for timely replenishment, ensuring the backflushing effect, extending the valve's service life, and ensuring stable system operation.

Description

Technical Field

[0001] This utility model relates to the field of eccentric hemispherical valve technology, specifically to a side-mounted eccentric hemispherical valve. Background Technology

[0002] A side-mounted eccentric hemispherical valve is a valve in which the central axis of the valve body is offset from the central axis of the hemisphere. Its working principle involves the rotation of the ball around the valve body's central axis to open and close the valve. Internal components are installed and disassembled from the side. Due to its eccentric design, the valve disc gradually presses against the valve seat when closed, achieving a good sealing effect. It is suitable for various media and, due to its superior cost-effectiveness, is gradually becoming a replacement for other ball valves. However, when handling fluids containing solid impurities, these impurities easily accumulate inside the valve. These impurities hinder the normal movement of the valve disc, making the valve unable to open and close flexibly, and in severe cases, even causing the valve to jam. Simultaneously, solid impurities can also wear down the valve's internal coating, damaging its corrosion resistance, further reducing the valve's service life, increasing maintenance costs and downtime, and causing numerous inconveniences to production. Therefore, developing a new type of valve that can effectively solve the above problems is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a side-mounted eccentric hemispherical valve to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The device includes a ball valve mechanism, and a valve chamber backflushing mechanism is provided on the bottom front side of the ball valve mechanism. The ball valve mechanism includes a valve body, an actuator mounted on the top surface of the valve body, and an eccentric shaft connected to the actuator and passing through the valve body. A ball crown is eccentrically rotated in the inner cavity of the valve body, and the top end of the ball crown is fixedly connected to the bottom end of the eccentric shaft.

[0005] The valve chamber backwashing mechanism includes a water tank fixed on the front surface of the valve body, a rubber tube inserted into the valve body from bottom to top, and a straight tube embedded and fixed inside the rubber tube. The top end of the straight tube is fixedly connected to a sleeve, the inside of the sleeve is provided with a water channel, the outer surface of the sleeve is provided with multiple fan-shaped openings, and several water spray holes are provided between the water channel and the fan-shaped openings.

[0006] A miniature water pump is fixedly connected to the front surface of the water tank. The supply end of the miniature water pump is connected to a drain pipe. The end of the drain pipe away from the miniature water pump is connected to the bottom end of the straight pipe through a connector.

[0007] As a preferred embodiment of this utility model: the liquid extraction end of the micro water pump is connected to a liquid extraction pipe that extends to the bottom of the inner cavity of the water tank via a connector.

[0008] As a preferred embodiment of this utility model: a liquid level sensor is fixedly connected to the inner wall of the water tank, and an inlet port is installed on the top surface of the water tank.

[0009] As a preferred embodiment of this utility model: the rubber tube has a through hole for the straight tube to be embedded and fixed inside, and the gap between the through hole and the straight tube is filled with sealant.

[0010] As a preferred embodiment of this utility model: the fan-shaped openings are arranged in a ring array with the axis of the sleeve as the reference, which is used to spray and rinse the inner cavity of the valve body from multiple angles, to prevent solid impurities from accumulating in the inner cavity of the valve body, and to avoid abnormal wear of the valve body coating after the ball crown moves due to solid impurities.

[0011] As a preferred embodiment of this utility model, the internal space of the waterway is interconnected with the internal space of the straight pipe.

[0012] As a preferred embodiment of this utility model: the bottom surface of the valve body is provided with an opening for the rubber tube to be embedded and fixed, the gap between the opening and the rubber tube is filled with sealant, and pipes are fixed to the left and right ports of the valve body by flanges and bolts.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] In the valve mechanism, the actuator drives the eccentric shaft to rotate, causing the spherical crown to rotate eccentrically, thus opening and closing the valve. The structure is simple and easy to operate, providing a rapid response to opening and closing demands. The valve cavity backflushing mechanism effectively prevents the accumulation of solid impurities, avoids abnormal wear between the spherical crown and the valve body's internal coating during movement, and extends the valve's service life. A miniature water pump draws liquid from the tank, which flows through the suction pipe, drainage pipe, and straight pipe into the sleeve. The liquid is then sprayed from fan-shaped openings at multiple angles through spray nozzles, providing a wide flushing range and thoroughly cleaning the valve body cavity. A liquid level sensor monitors the liquid level in the tank, facilitating timely replenishment and ensuring continuous backflushing. The overall solution improves the stability and reliability of valve operation, reduces maintenance costs, and ensures the efficient operation of the pipeline system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of an eccentric hemispherical valve.

[0017] Figure 2 This is a schematic diagram of the internal structure of an eccentric hemispherical valve.

[0018] Figure 3 This is a schematic diagram of the valve chamber backflushing mechanism;

[0019] Figure 4 This is a schematic diagram of the nozzle in the valve chamber backflushing mechanism;

[0020] Figure 5 This is a magnified schematic diagram of the nozzle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Ball valve mechanism; 1-1. Valve body; 1-2. Eccentric shaft; 1-3. Actuator; 1-4. Ball crown; 1-5. Pipeline; 2. Valve cavity backflushing mechanism; 2-1. Water tank; 2-2. Sleeve; 2-3. Rubber hose; 2-4. Liquid extraction pipeline; 2-5. Miniature water pump; 2-6. Drainage pipeline; 2-7. Straight pipe; 2-8. Fan-shaped opening; 2-9. Spray hole; 2-10. Water channel. Detailed Implementation

[0023] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0024] Example 1: A side-mounted eccentric hemispherical valve includes a ball valve mechanism 1, and a valve cavity backwashing mechanism 2 is provided on the bottom front side of the ball valve mechanism 1. In the ball valve mechanism 1, an actuator 1-3 is installed on the top surface of the valve body 1-1, and an eccentric shaft 1-2 is connected to the actuator 1-3 and passes through the valve body 1-1. An eccentrically rotating ball crown 1-4 is located in the inner cavity of the valve body 1-1, and the top end of the ball crown 1-4 is fixedly connected to the bottom end of the eccentric shaft 1-2. In the valve cavity backwashing mechanism 2, a water tank 2-1 is fixed on the front surface of the valve body 1-1, a rubber tube 2-3 is inserted into the valve body 1-1 from bottom to top, a straight tube 2-7 is embedded and fixed inside the rubber tube 2-3, and a sleeve 2-2 is fixedly connected to the top end of the straight tube 2-7. A water channel 2-10 is provided inside the sleeve 2-2, and multiple fan-shaped openings 2-8 are opened on the outer surface. Several spray holes 2-9 are opened between the water channel 2-10 and the fan-shaped openings 2-8. A miniature water pump 2-5 is fixedly connected to the front surface of water tank 2-1. Its supply end is connected to a drain pipe 2-6. The end of the drain pipe 2-6 away from the miniature water pump 2-5 is connected to the bottom end of a straight pipe 2-7 via a connector. The suction end of the miniature water pump 2-5 is connected to a suction pipe 2-4 that extends through to the bottom of the inner cavity of water tank 2-1 via a connector. A liquid level sensor is fixedly connected to the side wall of the inner cavity of water tank 2-1, and an inlet port is installed on the top surface. A through hole is opened inside the rubber tube 2-3 for the straight pipe 2-7 to be embedded and fixed; the gap between the through hole and the straight pipe 2-7 is filled with sealant. Fan-shaped openings 2-8 are arranged in a ring array with the axis of sleeve 2-2 as the reference. The internal space of water channel 2-10 is interconnected with the internal space of straight pipe 2-7. An opening is opened on the bottom surface of valve body 1-1 for the rubber tube 2-3 to be embedded and fixed; the gap between the opening and the rubber tube 2-3 is filled with sealant. Pipes 1-5 are fixed to the left and right ports of valve body 1-1 via flanges and bolts. In use, the driver 1-3 drives the eccentric shaft 1-2 to rotate the ball cap 1-4 to open and close the valve. When there is a risk of solid impurities accumulating in the inner cavity of the valve body 1-1, the micro water pump 2-5 works to pump the liquid in the water tank 2-1 through the liquid pumping pipe 2-4 and the drain pipe 2-6 to the straight pipe 2-7, and then through the water channel 2-10 and the spray hole 2-9 to spray out from the fan-shaped opening 2-8 at multiple angles to flush the inner cavity of the valve body 1-1.

[0025] Example 2: A side-mounted eccentric hemispherical valve includes a ball valve mechanism 1 and a valve cavity backwashing mechanism 2 disposed on its bottom front side. The ball valve mechanism 1 has a actuator 1-3 at the top of its valve body 1-1. An eccentric shaft 1-2 connects to the actuator 1-3 and passes through the valve body 1-1. A ball crown 1-4 rotates eccentrically within the valve body 1-1, and its top end is connected to the bottom end of the eccentric shaft 1-2. In the valve cavity backwashing mechanism 2, a water tank 2-1 is fixed to the front side of the valve body 1-1. A rubber tube 2-3 is inserted into the valve body 1-1. A straight tube 2-7 is embedded within the rubber tube 2-3. The top end of the straight tube 2-7 is connected to a sleeve 2-2. The sleeve 2-2 has a water channel 2-10 and multiple fan-shaped openings 2-8. A spray hole 2-9 is located between the water channel 2-10 and the fan-shaped openings 2-8. A miniature water pump 2-5 is fixed to the front of the water tank 2-1. Its supply end is connected to the bottom of the straight pipe 2-7 via a drain pipe 2-6, and its suction end is connected to the bottom of the inner cavity of the water tank 2-1 via a suction pipe 2-4. The water tank 2-1 has a level sensor and an inlet port. The gap between the rubber tube 2-3 and the straight pipe 2-7 is filled with sealant. A ring array of fan-shaped openings 2-8 is formed, and the water channel 2-10 is connected to the internal space of the straight pipe 2-7. The gap between the bottom opening of the valve body 1-1 and the rubber tube 2-3 is filled with sealant. The left and right ports are fixed to the pipe 1-5 via flanges and bolts. After the valve has been operating normally for a period of time, the miniature water pump 2-5 is started. Liquid in the water tank 2-1 enters the straight pipe 2-7 through the pipes and is sprayed out from the fan-shaped openings 2-8 through the water channel 2-10 and the spray holes 2-9, flushing the inner cavity of the valve body 1-1 from multiple angles to prevent the accumulation of solid impurities from affecting the movement of the spherical crown 1-4 and causing abnormal wear.

[0026] Example 3: A side-mounted eccentric hemispherical valve, comprising a ball valve mechanism 1 and a valve cavity backwashing mechanism 2 located at its bottom front side. In the ball valve mechanism 1, a driver 1-3 is mounted on the top of the valve body 1-1. An eccentric shaft 1-2 connects to the driver 1-3 and passes through the valve body 1-1. A ball crown 1-4 rotates eccentrically within the valve body 1-1 and is fixed to the bottom end of the eccentric shaft 1-2. In the valve cavity backwashing mechanism 2, a water tank 2-1 is fixed to the front side of the valve body 1-1. A rubber tube 2-3 is inserted into the valve body 1-1. A straight pipe 2-7 is embedded in the rubber tube 2-3. The top end of the straight pipe 2-7 is connected to a sleeve 2-2. The sleeve 2-2 has a water channel 2-10 and multiple fan-shaped openings 2-8. A spray hole 2-9 is located between the water channel 2-10 and the fan-shaped openings 2-8. A miniature water pump 2-5 is fixed to the front of the water tank 2-1. Its supply end is connected to the bottom of the straight pipe 2-7 via a drain pipe 2-6, and its suction end is connected to the bottom of the inner cavity of the water tank 2-1 via a suction pipe 2-4. The water tank 2-1 is equipped with a level sensor and an inlet port. The gap between the rubber tube 2-3 and the straight pipe 2-7 is sealed with sealant. The fan-shaped openings 2-8 are arranged in a ring array, and the water channel 2-10 communicates with the internal space of the straight pipe 2-7. The gap between the bottom opening of the valve body 1-1 and the rubber tube 2-3 is sealed with sealant. The left and right ports are fixed to the pipe 1-5 via flanges and bolts. After the valve has been used for a long time, turn on the micro water pump 2-5. The liquid in the water tank 2-1 enters the straight pipe 2-7 through the liquid pumping pipe 2-4 and the drain pipe 2-6. Then, it is sprayed out from the fan-shaped opening 2-8 through the water channel 2-10 and the spray hole 2-9 to flush the inner cavity of the valve body 1-1 and prevent the accumulation of solid impurities from causing abnormal wear of the ball crown 1-4 and the inner coating of the valve body 1-1.

[0027] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: When the ball valve mechanism 1 is working, the actuator 1-3 is activated. Since the eccentric shaft 1-2 is connected to the actuator 1-3 and passes through the valve body 1-1, and the top end of the ball crown 1-4 is fixedly connected to the bottom end of the eccentric shaft 1-2, the actuator 1-3 will drive the eccentric shaft 1-2 to rotate, thereby causing the ball crown 1-4 to rotate eccentrically within the inner cavity of the valve body 1-1. The opening and closing operation of the valve is achieved through the rotation of the ball crown 1-4. The pipes 1-5 fixed to the left and right ports of the valve body 1-1 by flanges and bolts are used for the flow of the medium. When it is necessary to adjust the valve body 1-4... -1 The inner cavity is flushed to prevent the accumulation of solid impurities and avoid abnormal wear of the ball crown 1-4 and the inner coating of the valve body 1-1 after the ball crown moves. When the ball crown 1-4 moves, the micro water pump 2-5 fixed on the front surface of the water tank 2-1 is started. The liquid suction end of the micro water pump 2-5 is connected to the liquid suction pipe 2-4 through the connector and passes through to the bottom of the inner cavity of the water tank 2-1. At this time, the micro water pump 2-5 will draw out the liquid in the water tank 2-1 through the liquid suction pipe 2-4. The liquid level sensor fixed on the side wall of the inner cavity of the water tank 2-1 can monitor the liquid volume in the water tank 2-1. When the liquid is insufficient, the liquid can be replenished through the liquid inlet port installed on the top surface of the water tank 2-1.

[0028] The extracted liquid is transported through the drain pipe 2-6 connected to the supply end of the micro water pump 2-5. The end of the drain pipe 2-6 away from the micro water pump 2-5 is connected to the bottom end of the straight pipe 2-7 via a connector, allowing the liquid to enter the straight pipe 2-7. The straight pipe 2-7 is embedded and fixed inside the rubber tube 2-3, which is inserted into the valve body 1-1 from bottom to top. The rubber tube 2-3 has a through hole for the straight pipe 2-7 to be embedded and fixed, and the gap between the through hole and the straight pipe 2-7 is filled with sealant. The bottom surface of the valve body 1-1 also has an opening for the rubber tube 2-3 to be embedded and fixed, and the gap between the opening and the rubber tube 2-3 is also filled with sealant. The liquid enters the straight pipe. After 2-7, since the top of the straight pipe 2-7 is fixedly connected to the sleeve 2-2, and the inside of the sleeve 2-2 is provided with a water channel 2-10, and the internal space of the water channel 2-10 is interconnected with the internal space of the straight pipe 2-7, the liquid will enter the water channel 2-10. The outer surface of the sleeve 2-2 has multiple fan-shaped openings 2-8 arranged in a ring array with the axis of the sleeve 2-2 as the reference. Several water spray holes 2-9 are opened between the water channel 2-10 and the fan-shaped openings 2-8. The liquid is sprayed out from the fan-shaped openings 2-8 at multiple angles through the water spray holes 2-9, flushing the inner cavity of the valve body 1-1 and washing away any solid impurities that may accumulate in the inner cavity of the valve body 1-1.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A side-mounted eccentric half-ball valve comprising a ball valve mechanism (1), characterized in that: The ball valve mechanism (1) is provided with a valve chamber backwashing mechanism (2) on the bottom front side. The ball valve mechanism (1) includes a valve body (1-1), an actuator (1-3) mounted on the top surface of the valve body (1-1), and an eccentric shaft (1-2) connected to the actuator (1-3) and passing through the valve body (1-1). A spherical crown (1-4) is eccentrically rotated in the inner cavity of the valve body (1-1), and the top end of the spherical crown (1-4) is fixedly connected to the bottom end of the eccentric shaft (1-2). The valve chamber backwashing mechanism (2) includes a water tank (2-1) fixed on the front surface of the valve body (1-1), a rubber tube (2-3) inserted into the valve body (1-1) from bottom to top, and a straight tube (2-7) embedded and fixed inside the rubber tube (2-3). The top end of the straight tube (2-7) is fixedly connected to a sleeve (2-2). A water channel (2-10) is provided inside the sleeve (2-2). Multiple fan-shaped openings (2-8) are opened on the outer surface of the sleeve (2-2), and several water spray holes (2-9) are opened between the water channel (2-10) and the fan-shaped openings (2-8). A miniature water pump (2-5) is fixedly connected to the front surface of the water tank (2-1). The supply end of the miniature water pump (2-5) is connected to a drain pipe (2-6). The end of the drain pipe (2-6) away from the miniature water pump (2-5) is connected to the bottom end of the straight pipe (2-7) through a connector.

2. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: The micro water pump (2-5) has a pumping pipe (2-4) that extends through the bottom of the inner cavity of the water tank (2-1) via a connector at its pumping end.

3. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: A liquid level sensor is fixedly connected to the inner wall of the water tank (2-1), and an inlet port is installed on the top surface of the water tank (2-1).

4. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: The rubber tube (2-3) has a through hole for the straight tube (2-7) to be embedded and fixed inside, and the gap between the through hole and the straight tube (2-7) is filled with sealant.

5. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: The fan-shaped openings (2-8) are arranged in a ring array with the axis of the sleeve (2-2) as the reference, and are used to spray and flush the inner cavity of the valve body (1-1) from multiple angles to prevent solid impurities from accumulating in the inner cavity of the valve body (1-1) and to avoid abnormal wear of the ball crown (1-4) and the inner coating of the valve body (1-1) after the solid impurities move.

6. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: The internal space of the waterway (2-10) is interconnected with the internal space of the straight pipe (2-7).

7. A side-mounted eccentric half-ball valve according to claim 1, characterized in that: The bottom surface of the valve body (1-1) has an opening for the rubber tube (2-3) to be embedded and fixed. The gap between the opening and the rubber tube (2-3) is filled with sealant. Pipes (1-5) are fixed to the left and right ports of the valve body (1-1) by flanges and bolts.

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