Steel ball connection method of valve rod and plunger of inner cage sleeve type throttle valve
A connection method and throttle valve technology, which are applied in the directions of lift valves, valve devices, engine components, etc., can solve the problems of increased cost, large workload, and cumbersome installation, so as to save production costs, improve work efficiency, and achieve simple operation. Effect
Inactive Publication Date: 2016-08-24
SUZHOU DOUSON DRILLING & PRODION EQUIP
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Problems solved by technology
Among the connection methods of various parts, the most common is bolt connection, which requires drilling threaded holes, relatively speaking, the workload is large, and corresponding bolts need to be equipped, which increases the cost and is cumbersome to install
Method used
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Embodiment
[0010] Such as figure 1 As shown, the steel ball connection method between the valve stem of the inner cage type throttle valve and the plunger is as follows: a circular groove with a semicircular section is respectively processed at the contact position of the valve stem 1 and the plunger 3; The valve stem 1 and the plunger 3 are assembled so that the respective semicircular annular grooves of the valve stem 1 and the plunger 3 form an annular groove with a circular cross section; on the outside of the valve stem 1 and corresponding to the annular groove process a screw hole at the position; fill a number of steel balls 2 from the screw hole into the annular groove; then, put the fastening screw 4 into the screw hole to seal the hole, and lock and fix the valve stem 1 and the plunger 3; The contact between the stem 1 and the plunger 3 is a line contact, and the friction between the valve stem 1 and the plunger 3 is a line friction during the assembly process.
[0011] The st...
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The invention relates to a steel ball connection method of a valve rod and a plunger of an inner cage sleeve type throttle valve. The steel ball connection method of the valve rod and the plunger of the inner cage sleeve type throttle valve comprises the following specific steps: machining a circle of annular groove with a semicircular section on contact positions of the valve rod and the plunger respectively; assembling the valve rod and the plunger so as to form an annular groove with a round section through the respective semicircular annular grooves of the valve rod and the plunger; machining a thread hole at the position located at the outer side of the valve rod and corresponding to the annular groove; filling a steel ball into the annular groove from the thread hole; loading a fastening screw into the thread hole for sealing the hole and fastening and locking the valve rod and the plunger. The steel ball connection method is simple to operate; traditional bolt connection is replaced, a mounting space is extremely saved and the production cost is saved; rapid detachment and mounting can be realized and the working efficiency is improved; surface friction between the valve rod and the plunger is changed into linear friction so that the friction force is greatly reduced and the difficulty of mounting the valve is reduced to the great extent.
Description
technical field [0001] The invention relates to the field of an inner cage type throttle valve, in particular to a steel ball connection method for a valve stem and a plunger of an inner cage type throttle valve. Background technique [0002] Inner cage choke valves can be used for flow control services in various situations, including single-phase and multi-phase (oil, gas, water) production and flow control in single-phase (water or gas) injection situations. The throttle valve can be operated manually or it can be actuated by various actuators. Among the connection methods of various parts, bolt connection is the most common, and bolt connection requires drilling threaded holes, relatively speaking, the workload is large, and corresponding bolts need to be equipped, which increases the cost and is cumbersome to install. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a steel ball connection method betwee...
Claims
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IPC IPC(8): F16K1/48
CPCF16K1/48
Inventor 舒志高谈平庄会涛
Owner SUZHOU DOUSON DRILLING & PRODION EQUIP