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Small-torque electric ball valve

An electric ball valve, small torque technology, applied in valve details, valve devices, engine components, etc., can solve problems such as slow response and execution of electric ball valves, damage to the electric driver of electric ball valves, and increased starting torque.

Inactive Publication Date: 2017-08-22
华英伦科技(宁波)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A sealing ring of hard polytetrafluoroethylene for sealing is provided between the ball valve core and the valve body of the electric ball valve of the prior art. figure 2 ;In order to prevent leakage, the sealing ring and the ball valve core are in a tight sliding fit, and the torque for the motor to turn the ball valve core through the valve stem to switch is inherently large. In practical applications, due to the static adhesion effect between the ball valve core and the sealing ring, the When the electric ball valve in the open or closed state is started, the static adhesion effect will cause the static friction between the ball valve core and the sealing ring to jump to the threshold of dynamic friction and increase, resulting in an abnormal increase in the starting torque, that is, "stuck and seized". "Phenomenon, ranging from making the response speed of the electric ball valve slow, and severely damaging the electric drive of the electric ball valve; therefore, the existing technology has the problem and deficiency of large starting torque

Method used

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Embodiment Construction

[0019] refer to figure 1 , a small torque electric ball valve of the present invention, including a valve body 1, a ball valve core 2, a sealing ring 3, an O-ring 4, a valve stem 5, and an electric driver 6, wherein: the valve body 1 is centered with a hollow The inner channel of the inner channel, the circular tubular copper shell with two ends open, the upper part of the valve body 1 is provided with a valve stem seat that protrudes upwards and is provided with a central through hole communicating with the inner channel; the left and right sides of the inner channel The annular steps for placing the sealing ring 3 on both sides are called the ring groove, and the bottom of the ring groove is provided with an annular groove for placing the O-ring 4 called the ring groove;

[0020] The O-ring 4 is a silicone rubber elastic member with a circular cross section and a circular appearance. The hardness of the O-ring 4 is 60-70 Shore hardness; the width of the ring groove is the s...

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PUM

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Abstract

The invention discloses a small torque electric ball valve, which comprises a valve body (1), a ball valve core (2), a sealing ring (3), an O-ring (4), a valve stem (5) and an electric driver (6). In the present invention, an elastic and silicon rubber O-ring is arranged between the sealing ring and the valve body. When the electric ball valve is started, a shearing and sliding tendency occurs between the ball valve core and the sealing ring, and the elasticity of the O-ring is used to make the sealing ring produce Elastic retreat, reducing and overcoming the static adhesion between the ball valve core and the sealing ring, using a small torque to make the static friction between the ball valve core and the sealing ring transition to dynamic friction, thereby reducing the technical scheme of the starting torque, making the electric ball valve , to achieve the purpose of reducing the starting torque and turning torque.

Description

technical field [0001] The invention relates to a ball valve, in particular to a small torque electric ball valve driven by a motor and used for pipeline switching. Background technique [0002] A sealing ring of hard polytetrafluoroethylene for sealing is provided between the ball valve core and the valve body of the electric ball valve of the prior art. figure 2 ;In order to prevent leakage, the sealing ring and the ball valve core are in a tight sliding fit, and the torque for the motor to turn the ball valve core through the valve stem to switch is inherently large. In practical applications, due to the static adhesion effect between the ball valve core and the sealing ring, the When the electric ball valve in the open or closed state is started, the static adhesion effect will cause the static friction between the ball valve core and the sealing ring to jump to the threshold of dynamic friction and increase, resulting in an abnormal increase in the starting torque, that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/20F16K31/04
CPCF16K5/0689F16K5/20F16K31/041
Inventor 邵浩清朱克俞开江
Owner 华英伦科技(宁波)有限公司
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