Ball valve with oilless bearing
A technology of oil-free bearings and ball valves, which is applied in shaft seals, valve details, valve devices, etc., can solve the problems of packing gland and valve stem being rusted, unable to adjust, ball valve mounting nuts are loose, etc., and achieves good anti-leakage characteristics. Increased movement, tight connection effect
Pending Publication Date: 2017-05-10
江苏明江阀业有限公司
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The existing ball valve has the following disadvantages: the packing gland and the valve stem are easily rusted and bonded, causing when the packing needs to be pressed and adjusted, the packing gland and the upper part of the valve stem are rusted and cannot be adjusted, resulting in valve leakage
To get rid of this fault, the ball valve must be disassembled from the pipeline as a whole, and the parts of the ball valve must be removed and repaired one by one, which is quite troublesome; when the working environment vibrates strongly, it will cause the mounting nut on the ball valve to loosen, making the ball valve Loose connection between integral parts, resulting in valve leakage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0009] figure 1 Middle: valve stem 1, valve ball 2, liquid channel 3, valve body 4, valve stem packing 5, packing gland 6, oil-free bearing 7, coating 8, first nut 9, second nut 10, valve cover 11.
[0010] A ball valve with an oil-free bearing, the ball valve includes a valve stem 1, a valve ball 2 with a liquid passage 3 arranged at the lower part of the valve stem 1, a valve body 4, and a valve stem packing 5, and the ball valve also includes The packing gland 6 and the oil-free bearing 7, the packing gland 6 is threadedly connected with the valve stem 1, the valve body 4 and the valve stem 1 hold the valve stem packing 5, and the valve stem packing 5 is used for Fill the gap between the valve body 4 and the valve stem 1 to avoid liquid leakage from the gap between the valve body 4 and the valve stem 1.
[0011] The upper part of the packi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a ball valve with an oilless bearing. The ball valve comprises a valve stem, a valve ball disposed at the lower portion of the valve stem and provided with a liquid passage, a valve body, and a valve stem packing. The ball valve also comprises a packing gland and an oilless bearing. The packing gland is in threaded connection with the valve stem. The valve stem packing is clamped by the valve body and the valve stem clamp. The upper portion of the packing gland is in crimp connection with the valve stem packing. The inner race of the oilless bearing is movably connected to the valve stem, and the outer race of the oilless bearing is connected to the packing gland. Advantages of the invention are as follows: first, facilitating adjustment of press fit between the packing gland and the valve stem and the valve rod packing and keeping favorable leakproof property of the ball valve; and second, with not easy loosing of connecting nuts when the ball valve is used in equipment vibrating intensively, keeping tight connection of various parts of the ball valve with each other.
Description
technical field [0001] The invention relates to the valve industry, in particular to a ball valve which has a long service life and can avoid rust. Background technique [0002] Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis. [0003] The existing ball valve has the following disadvantages: the packing gland and the valve stem are easily rusted and bonded, causing when the packing needs to be pressed and adjusted, the packing gland and the upper part of the valve stem are rusted and cannot be adjusted, resulting in valve leakage. To get rid of this fault, the ball valve must be disassembled from the pipeline as a whole, and the parts of the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16K5/06F16K5/08F16K41/02
CPCF16K5/0663F16K5/08F16K41/02
Inventor 陶永红王斌
Owner 江苏明江阀业有限公司