Rotation still shaft sealer
Technical field
The utility model relates to shaft sealer, is specially a kind of rotation still shaft sealer.
Background technology
Tradition rotation still structural shape is a horizontal type structure, mainly adopts packing seal, and packing seal mainly (is generally adopted asbestos packing by filler casing, filler; And contain graphite or butter is made lubricant), part such as gland, hold-down bolt and nut forms; Cardinal principle is: when screwing hold-down bolt, and the gland compressible filler, so that the filler distortion is close on the surface that is axle; Block the passage of dielectric leakage, thereby reached the effect of sealing.
The employing packing seal structure is simple, and filler dress folding is convenient, and service life is shorter, although most of filler is nonmetal and lubricant is arranged; When the rotation still was done relative motion with stuffing box is coaxial, the friction and wear between axle and filler was inevitably, thereby the leakage of trace is always arranged, and guarantee reliable sealing; Just must increase the filler number of turns, or increase the thrust of filler, and in actual use; Because often leak at axle envelope place, filler is changed frequent, increases labour intensity; Reduce operating efficiency, cause energy consumption and maintenance cost constantly to improve, shorten service life; Because its leakage rate is big, environmental pollution is serious simultaneously.
Summary of the invention
The utility model exists in order to solve existing rotation still shaft sealer that labour intensity is big, inefficiency, cost is higher and environmental pollution is serious problem, and a kind of rotation still shaft sealer is provided.
The utility model is to adopt following technical scheme to realize: rotation still shaft sealer; Comprise the bearing block that is fixed on the kettle, the left side of bearing block is fixed with movable pressure ring, and movable pressure ring left side is provided with fixedly throw-out collar; And movable pressure ring and fixedly be provided with the seal with metal lens ring ring that is enclosed within on the air inlet pipe between the throw-out collar; Fixedly throw-out collar left side is provided with loose flange, and fixedly is provided with bearing between throw-out collar and the loose flange, is installed with bolt between loose flange and the movable pressure ring; Be positioned on the bolt on movable pressure ring right side and be with spring, and be screwed with nut on the bolt on spring right side.During operation, the position of adjusting nut, seal with metal lens ring ring and movable pressure ring, fixedly throw-out collar under the effect of pressing force of the spring; Scioptics pad sealing ring forms the line contact sealing between the sphere and the conical surface; This contact-making surface can adapt to automatically and connect the not straight situation of pipeline, and self-alignment property is good, and the line contact position can get higher seal pressure; Guaranteed that effectively medium can't be toward external leakage in the still; Simultaneously spring can also play the effect of buffering, guarantees the transmission mechanism safe handling, has overcome that existing rotation still shaft sealer exists that labour intensity is big, inefficiency, cost is higher and environmental pollution is serious problem.
The utility model reasonable in design is reliable, after the sealing of scioptics pad sealing ring, has improved the intensity of sound pair of friction components; The shock resistance and the anti-vibration ability of the sealing device of rotation still have been strengthened; Effectively solve sealing place leakage problem, avoided frequently stopping in the production process, changed the gland sealed number of times; Save human and material resources, improved production efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: the 1-kettle, the 2-bearing block, the movable pressure ring of 3-, 4-is throw-out collar fixedly, 5-air inlet pipe, 6-seal with metal lens ring ring, 7-loose flange, 8-bearing, 9-bolt, 10-spring, 11-nut.
The specific embodiment
Rotation still shaft sealer; Comprise the bearing block 2 that is fixed on the kettle 1, the left side of bearing block 2 is fixed with movable pressure ring 3, and movable pressure ring 3 left sides are provided with fixedly throw-out collar 4; And movable pressure ring 3 and fixedly be provided with the seal with metal lens ring ring 6 that is enclosed within on the air inlet pipe 5 between the throw-out collar 4; Fixedly throw-out collar 4 left sides are provided with loose flange 7, and fixedly are provided with bearing 8 between throw-out collar 4 and the loose flange 7, are installed with bolt 9 between loose flange 7 and the movable pressure ring 3; Be positioned on the bolt 9 on movable pressure ring 3 right sides and be with spring 10, and be screwed with nut 11 on the bolt 9 on spring 10 right sides.