Stop valve convenient to rotate
A shut-off valve and valve body technology, applied to valve devices, engine components, cocks including cut-off devices, etc., can solve the problems of shut-off valve leakage, short service life, and no ideal similar products, etc., and achieve easy rotation and simple structure Effect
Inactive Publication Date: 2016-04-13
QIDONG GAOYANG MECHANICAL ELECTRICAL MFG CO LTD
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Problems solved by technology
If the pressure is too high (≥20MPa), the shut-off valve will leak seriously and the service life will be short. At present, there is no ideal similar product
Method used
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[0016] Such as figure 1 As shown, the present invention discloses a shut-off valve that is easy to rotate, including a valve body 1, a valve core 5, a connecting device and a sealing device; flow channel 8, and the side of the valve body 1 has a spool 5 installation hole perpendicular to the flow channel 8; the installation hole has a circle of arc-shaped groove A with a semicircular cross section; the spool 5 is cylindrical, And inserted in the installation hole of the valve body 1, there is an arc-shaped groove B with a semicircular section on the side of the installation hole corresponding to the arc-shaped groove, and a flow channel hole 7 matching with the flow channel 8 in the center; The connecting device is a plurality of steel balls 6 arranged inside the arc-shaped groove A and the arc-shaped groove B, and the valve body 1 has a steel ball hole communicating with the arc-shaped groove A for the steel ball 6 to pass through. The sealing device is a packing 2 arranged ...
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The invention relates to a stop valve convenient to rotate. The stop valve comprises a valve body, a valve element, a connecting device and a sealing device, wherein the valve element is in the shape of a cylinder, and is spliced into a valve body mounting hole; the position, corresponding to a mounting hole arc-shaped slot, of the side surface of the valve element is provided with an arc-shaped slot B with a semicircular section; the center of the arc-shaped slot is provided with a runner hole matched with a runner; the connecting device comprises a plurality of steel balls which are arranged on the inner part of arc-shaped slots A and the arc-shaped slot B; the sealing device is stuffing which is arranged at the upper end and the lower end of a contact surface of the valve element and the valve body; and a pressure ring for pressing the stuffing is arranged above the stuffing. The stop valve convenient to rotate has the advantages that: the steel balls are matched at the joint of the valve body and the valve element, so that the rotation is convenient; the valve element is not a spherical structure, the runner hole is formed in the valve element, and the runner hole is coaxial with the runner by virtue of rotation, so that opening is realized; and the steel balls are arranged between the valve element and the valve body for assembling and mounting, so that the structure is simple, and the rotation is convenient; and by adopting the method of matching the stuffing with the pressure ring, the sealing of the valve body and the valve element is realized.
Description
technical field [0001] The invention relates to the field of valves, in particular to a shut-off valve that is easy to rotate. Background technique [0002] At present, the main problems of similar products used in China are: the internal structure of the stop valve is a spherical stop valve: the structure is complex, the sealing is good, and the volume is too large. However, the operating pressure of the large-diameter globe valve (larger than 20 diameter) is lower than 16MPa, and it is easy to leak. If the pressure is too high (≥ 20MPa), the shut-off valve has serious leakage and short service life, and there is no ideal similar product at present. [0003] And in the stop valve, the sealing problem and the rotation problem have always been two contradictory problems. Contents of the invention [0004] The technical problem to be solved by the invention is to provide a shut-off valve with good sealing performance and flexible rotation. [0005] In order to solve the a...
Claims
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IPC IPC(8): F16K5/06
CPCF16K5/06F16K5/0689
Inventor 卫红
Owner QIDONG GAOYANG MECHANICAL ELECTRICAL MFG CO LTD