Vacuum isolating valve
A technology of vacuum isolation and valve core, applied in sliding valve, valve details, valve device and other directions, can solve problems such as affecting the normal operation of equipment, unreasonable design structure, safety accidents, etc., and achieve improved rigidity, simple structure and economical manufacturing cost. Effect
Inactive Publication Date: 2014-12-03
JIANGSU NANTONG SHENTONG MACHINERY
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- Abstract
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Problems solved by technology
At present, some vacuum isolation valves on the market are unreasonable in design and structure. In the case of long-term application and vacuum, it is very easy to cause vacuum loss, affect the normal operation of the entire equipment, and even lead to safety accidents.
Method used
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Embodiment 1
[0017] The present invention is on the basis of above-mentioned structure, as figure 1 , the valve stem 4 is also covered with a bellows 5, the two ends of the bellows 5 are connected to the valve cover 2 and the valve core 3 by welding, the bellows can effectively ensure the sealing between the valve core and the valve cover, Moreover, when the valve core is opened through the valve stem, according to the characteristics of the bellows, it can be opened smoothly through elasticity; 2-5mm; the connection between the valve column 1c and the limit plate 1b and the pipe 1a is integrally formed, and the integrally formed fixed connection can improve the rigidity of the overall device, and long-term use will not cause vacuum loss; the valve The cover 2 and the valve body 1 are connected by welding, which can greatly improve air tightness and rigidity; the lower end of the outer surface of the valve stem 4 is provided with external threads, and the step of the valve core 3 is provid...
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Abstract
The invention discloses a vacuum isolating valve. A valve rod is coated with a corrugated pipe, and two ends of the corrugated pipe are connected onto a bonnet and a valve core through welding; a layer of zinc is arranged on the outer circular surface of the valve core through electroplating; a valve column, a limiting plate and a pipeline are connected in an integrally molded manner; the bonnet and a valve body are connected through welding; an outer thread is arranged at the lower end of the outer circular surface of the valve rod, an inner thread is arranged on a step of the valve core, the valve rod and the valve core are connected in a threaded fit manner, and then the connection position is fixed through welding again; an outer trapezoidal thread is arranged at the upper end of the outer circular surface of the valve rod, an inner trapezoidal thread is arranged in the middle of the bonnet, and the valve rod and the bonnet are matched with each other through the trapezoidal threads. The vacuum isolating valve is compact in design and reasonable in structure and adopts the integrally-molding fixed connection method, so that the rigidity of the whole valve can be improved, and the vacuum loss can be avoided after long-term usage; the vacuum isolating valve is simple in structure, economical in manufacturing cost, lower in difficulty for an operator and applicable to large-scale popularization.
Description
technical field [0001] The invention relates to the field of valves, in particular to a vacuum isolation valve. Background technique [0002] The types of vacuum isolation valves can be divided into wedge gate valves and parallel gate valves according to the sealing surface configuration. Wedge gate valves can be divided into: single gate type, double gate type and elastic gate type; parallel gate type Gate valves can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: rising stem gate valve and dark stem gate valve. At present, some vacuum isolation valves on the market are unreasonable in design and structure. In the case of long-term application and vacuum, it is very easy to cause vacuum loss, affect the normal operation of the entire equipment, and even lead to safety accidents. Contents of the invention [0003] In order to overcome the disadvantages of the above-mentioned p...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K3/00F16K41/10F16K27/10F16K27/04
CPCF16K3/22F16K27/041F16K41/10
Inventor 高峰顾忠华蔡森华缪红建宗勇
Owner JIANGSU NANTONG SHENTONG MACHINERY