Wear-resistant top-mounted eccentric ball valve

Abstract

The wear-resistant top-mounted eccentric ball valve is simple in structure and capable of preventing water hammers and comprises a valve body, a water inlet channel, a water outlet channel and a valve plate, the water inlet channel and the water outlet channel are formed in the valve body, the valve plate is arranged between the water inlet channel and the water outlet channel, a containing channel is formed in the bottom end of the water inlet channel, and a rotating rod is rotationally arranged in the containing channel. A baffle is arranged on the rotating rod, an abutting block is arranged at the upper end of the inner wall of the water inlet channel, a turnover device for driving the baffle to turn over to the abutting block is arranged on the valve body, a hammer eliminating cylinder is further arranged at the position, located at the containing channel, of the bottom end of the valve body, and a hammer eliminating device is arranged in the hammer eliminating cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially a kind of wear-resisting upper-mounted eccentric ball valve. BACKGROUND

[0002] The eccentric half-ball valve is a kind of relatively new ball valve, it has some advantages unique to its structure, such as no friction when opening and closing, sealing is not easy to wear, small torque when opening and closing, which can reduce the size of the actuator, with multi-rotation electric actuator, it can realize the adjustment and tight cut-off of medium, and is widely used in petroleum, chemical industry, urban water supply and drainage and other strict cut-off conditions.

[0003] When the eccentric half-ball valve is closed, water hammer will be generated in the pipeline, which will hit the valve plate, causing the valve plate to be easily damaged and reducing the service life of the valve plate.

[0004] To solve this problem, the utility model is produced. UTILITY MODEL CONTENTS

[0005] Therefore, in view of the above problems, the utility model provides a kind of wear-resisting upper-mounted eccentric ball valve with simple structure and water hammer prevention.

[0006] To solve the above technical problems, the utility model takes the following solution: a kind of wear-resisting upper-mounted eccentric ball valve, including valve body, water inlet channel and water outlet channel opened on valve body, valve plate arranged between water inlet channel and water outlet channel, the bottom end of water inlet channel is provided with a placing channel, a rotating rod is rotatably arranged in the placing channel, a baffle is arranged on the rotating rod, a top block is arranged on the inner wall of water inlet channel, a valve body is provided with a turnover device for turning the baffle to the top block, a hammer elimination cylinder is further arranged at the bottom end of the valve body at the placing channel, and a hammer elimination device is arranged in the hammer elimination cylinder.

[0007] Further improvement is that: the turnover device includes a winch, the winch is arranged on the outer end face of the valve body, the valve body and the top block are provided with an L-shaped communication channel, a deflection guide roller is arranged in the communication channel, the pull rope of the winch passes through the communication channel and is connected with the baffle by passing around the guide roller, and a sealing sleeve is arranged at the position of the pull rope in the communication channel to prevent water leakage.

[0008] Further improvement is that: the hammer elimination device includes a sliding plate, the sliding plate is slidably arranged in the hammer elimination cylinder, a spring is arranged between the sliding plate and the hammer elimination cylinder, one end of the spring is connected with the sliding plate, and the other end of the spring is connected with the hammer elimination cylinder.

[0009] Further improvement is that: the baffle is provided with an elastic layer, the elastic layer is arranged in spherical surface, and an elastic column is arranged between the elastic layer and the baffle.

[0010] Further improvement is that the elastic layer is an elastic film layer.

[0011] Further improvement is that the inner wall of the valve body is provided with a rubber layer.

[0012] By adopting the foregoing technical scheme, the utility model has the advantages of:

[0013] The structure is simple, and the water hammer can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a wear-resistant top-mounted eccentric ball valve cross-section structure schematic view of the utility model embodiment.

[0015] Fig. 2 is a structure schematic view of the utility model embodiment A place amplification. DETAILED DESCRIPTION

[0016] The utility model will be further described in combination with the drawings and specific embodiments.

[0017] Reference Figs. 1-2 The utility model discloses a wear-resistant top-mounted eccentric ball valve, including the valve body 1, the water inlet channel 2 and the water outlet channel that set up on the valve body 1, the valve plate that is located between the water inlet channel 2 and the water outlet channel, the water inlet channel 2 bottom end is set up with the placement channel 7, the rotating rod 3 is rotatably arranged in the placement channel 7, the rotating rod 3 is equipped with the baffle 4, the water inlet channel 2 inner wall upper end is equipped with the abutting block 13, the valve body 1 is equipped with the turnover device that drives the baffle 4 to overturn to the abutting block 13, the valve body 1 bottom end is located at the placement channel 7 still is equipped with the hammering elimination cylinder, the sliding plate 8 is equipped in the hammering elimination cylinder, and the spring 9 is equipped between the sliding plate 8 and the hammering elimination cylinder, one end of the spring 9 is connected with the sliding plate 8, and the other end of the spring 9 is connected with the hammering elimination cylinder.

[0018] Specifically, the turnover device includes a winch 10, the winch 10 is arranged on the outer end surface of the valve body 1, the valve body 1 and the abutting block 13 are provided with an L-shaped communication channel 12, a deflection guide pulley 14 is arranged in the communication channel 12, the pull rope of the winch 10 is inserted into the communication channel 12, passes around the guide pulley and is connected with the baffle 4, and a sealing sleeve is arranged at the position of the pull rope in the communication channel 12 to prevent water leakage.

[0019] In order to further eliminate the hammer, the baffle 4 is provided with an elastic film layer 5, the elastic film layer 5 is arranged in a spherical surface, and an elastic column 6 is arranged between the elastic layer and the baffle 4.

[0020] In order to prevent the valve plate from wearing when rotating, improve the wear resistance of the ball valve, a rubber layer 11 is arranged on the inner wall of the valve body 1.

[0021] Working principle:

[0022] When using, when the ball valve is closed, the winch 10 is rotated, the pull rope of the winch 10 is retracted, so that the pull rope drives the baffle 4 to rise, thereby abutting against the abutting block 13 and being arranged in an inclined manner. At this time, the ball valve is closed, the water hammer enters the water inlet channel 2, impacts the baffle 4, the baffle 4 performs hammer elimination, and due to the inclination of the baffle 4, the water hammer is impacted into the hammer elimination cylinder, pushes the sliding plate 8 to slide, thereby compressing the spring 9, thereby further eliminating the water hammer, thereby reducing the pressure of the baffle 4. At the same time, after the water hammer is eliminated, the impact of the water hammer on the valve plate can be reduced, thereby prolonging the service life of the ball valve. When the ball valve is opened, the baffle 4 is lowered, so that the baffle 4 does not affect the water flow.

[0023] The basic principle and main features of the utility model and the advantages thereof are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A wear-resistant upper-mounted eccentric ball valve, comprising a valve body, a water inlet channel and a water outlet channel opened on the valve body, and a valve plate arranged between the water inlet channel and the water outlet channel, characterized in that: The bottom end of the water inlet channel is provided with a placing channel, a rotating rod is rotatably arranged in the placing channel, a baffle is arranged on the rotating rod, a top block is arranged on the inner wall of the water inlet channel, a turnover device is arranged on the valve body to turn the baffle to the top block, a hammer eliminating cylinder is arranged at the bottom end of the valve body in the placing channel, and a hammer eliminating device is arranged in the hammer eliminating cylinder.

2. A wear resistant top entry eccentric ball valve according to claim 1, characterized in that: The turnover device comprises a winch arranged on the outer end surface of the valve body, an L-shaped communication channel is arranged in the valve body and the top block, a deflection guide wheel is arranged in the communication channel, a pull rope of the winch is arranged in the communication channel, passes around the guide wheel and is connected with the baffle, and a sealing sleeve is arranged at the position of the pull rope in the communication channel to prevent water leakage.

3. A wear resistant top entry eccentric ball valve according to claim 1, characterized in that: The hammer eliminating device comprises a sliding plate slidably arranged in the hammer eliminating cylinder, a spring is arranged between the sliding plate and the hammer eliminating cylinder, one end of the spring is connected with the sliding plate, and the other end of the spring is connected with the hammer eliminating cylinder.

4. A wear resistant top entry eccentric ball valve according to claim 1, characterized in that: An elastic layer is arranged on the baffle, the elastic layer is arranged in a spherical surface, and an elastic column is arranged between the elastic layer and the baffle.

5. A wear resistant top entry eccentric ball valve according to claim 4, characterized in that: The elastic layer is an elastic film layer.

6. A wear resistant top entry eccentric ball valve according to claim 1, characterized in that: A rubber layer is arranged on the inner wall of the valve body at the valve plate.

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