CN2127040Y - Roller sealing device under alluvial gold ship - Google Patents

Abstract

The utility model provides a novel structure's drum sealing device under gold dredger. It is mainly composed of pushers 2, 4, floating ring sealing sleeves 13, 14 respectively mounted on flange 18 and flange 3 with convex ring, flange 18 and 3 respectively connected with lower drum 16 and duck egg shaped bearing seat 5, screw thrust bearing sleeve 7 on shaft 15, bush 6 with oil groove on outer ring, blade 8 and locking nut 17 on tail, locking nut 9 with oil hole, and axial force bearing 11. It has the functions of active sand discharging, sand prevention, external force balancing and lubricating, and effectively solves the sealing problem of the lower roller of the gold mining ship. The performance is excellent after being tried by gold mining ships of relevant departments.

Description

Lower expansion cylinder sealing device of gulch-gold ship

The utility model belongs to adopts the improvement of gold dust with the bottom roll sealing device of ship.Being fit to gold dredger uses in the underwater operation of 12-20 rice.

The sealing of existing gold dust gold dredger bottom roll, owing to adopt conventional oil sealing and labyrinth structure, and can't under water-bed complicated topography and geomorphology and judder that is produced and alternating force, effectively seal, thereby cause bearing heavy wear until off-axis, gold dredger can't be run well, cause unnecessary loss.

The purpose of this utility model is intended to overcome above-mentioned deficiency of the prior art, designs and manufactures a kind of gold dredger bottom roll sealing device that can effectively seal.

The purpose of this utility model is to realize as follows: adopt the screw propulsion principle; the active sediment outflow; protection layer by layer; pusher promptly is installed on ring flange; straight trough between the pusher and helicla flute match to merge and are connected and installed the floating-ring seal cover that has two-way spiral groove; be provided with sealing ring in sealing shroud and the pusher; band spiral fluted screw-pushing type splicing sleeve is arranged on the axle; there is the outer ring to establish the bush of bush bearing of oil groove between splicing sleeve and the bearing block; afterbody has logical grease lock nut; fuel filler neck and push away the grease blade, the axial force bearing is installed between locking nut and bearing cover and constitutes.The duck's egg bearing block makes and all constitutes itself and being connected of manipulator the hinges connection.Fill with grease in the fuel filler neck by the oil pump valve protection before using; after starting, ship utilizes its power; each space that the rotation of drive blade is pushed grease in the bearing block to makes each parts sufficient lubrication; pusher rotates initiatively to push away to remove and enters the sand grains of bottom roll simultaneously, thereby has effectively protected the bottom roll main shaft.The hinges structure of bearing block and manipulator has effectively solved the problem of elastic force distortion and two shaft concentricities again, makes the manipulator become line contact with axle all the time, when external force acts on when making it to be out of shape by force, has an end to throw off automatically, recovery naturally again when external force is eliminated.

The utility model device closes gold mine 2# gold dredger through area, Hanzhong, Shaanxi Province rising tone to be tried out, and result of use is good.It makes simple advantage in addition, adds detachment combination in man-hour, also can wholely make.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is that the front view of a kind of concrete structure of the utility model adds partial sectional view

Code name among the figure: 15 16 bottom roll 17 locking nuts 18 ring flanges of ring flange 5 duck's egg oblique crank Z bearing 6 linings (sliding bearing), 7 screw-pushing type splicing sleeve 8 blades, 9 locking nut 10 fuel filler necks 11 axial force bearings 12 pressure release space chambers 13,14 floating-ring seals covers with holes of 1 zero shape sealed pictures, 2,4 pushers, 3 band bulge loops

With reference to Fig. 1, pusher 2,4 and floating-ring seal cover 14 is installed on ring flange 18, have helicla flute on pusher 2 inner rings and pusher 4 outer rings, the floating-ring seal that has a bidirectional screw is overlapped 14 outer rings and is pasted mutually with pusher 4 inner rings.Bulge loop on the ring flange 3 is being respectively arranged with O-ring seals 1 between ring flange 18 and the bulge loop and between sealing shroud 14 and the ring flange 3 between pusher 2 and 4.The sealing shroud 13 that matches with sealing shroud 14 is fixed on the ring flange 3, and ring flange 3 is fixed on bearing block 5 one ends of duck's egg shape.Having on the main shaft 15 between outer astragal spiral fluted spiral thrust splicing sleeve 7, splicing sleeve 7 and the duck's egg oblique crank Z bearing 5 has the outer ring to establish the lining 6 of oil groove.Have oilhole on the locking nut 9.Locking nut 17 has the convex edge, be fixed with on it and push away grease blade 8.Axial force bearing 11 is installed between locking nut 17 and bearing block 5 end caps.There is pressure release space chamber 12 at the middle part of floating-ring seal cover 13 and 14.Lining 6 cooperates for movingly with bearing block 5 and thrust bearing 7, promptly is not fixed on the bearing block 5, only controls its axially-movable effect.The vibration that produces when utilizing the gold dredger operation simultaneously makes lining 6(copper sheathing) rotational angle voluntarily, its wearing and tearing can not be fixed on a direction, but are distributed on the circumference, prolong its service life.Fill with grease to the fuel filler neck 10 of check valve protection earlier before the work, when the gold dredger operation, each space of grease being pushed in the bearing block 5 by the arrow direction of motion (active force) among the figure by the power drive blade 8 of ship itself makes each parts sufficient lubrication.Simultaneously pusher 2 plays the region of no pressure that the sediment outflow effect stays thereafter and plays the oil suction lubrication again.Pusher 4 rotation not only can play a part to send oil, and can also form the space that changes with the annular groove that has on the bulge loop inner ring on the ring flange 3, thus play the effect of balance external force, after pusher 2 heavy wears, it can play the sediment outflow effect again.Thrust bearing cover 7 not only plays the bearing inner race supporting role; except that guaranteeing the enough oil of inner ring; also force to floating-ring seal cover 13; 14 fuel feeding; make it the oil film that combinational gap is formed with pressure; there are positive and negative two kinds of screw threads the position that close end of 14 inner rings and pressure release space, middle part 12 fuel-displaced sides are overlapped in floating-ring seal; the oil resistance effect is played near the thrust of the screw thread rotation generation at ring flange 18 places in the end; the screw thread at other two places works to quicken to push away oil (floating-ring seal cover 13; 14 only play the effect of oil extraction fat when flat, have only when pusher 2; play the sediment outflow protective effect after 4 heavy wears just now).Duck's egg oblique crank Z bearing 5 all constitutes hinges structure (connection) at the manipulator two ends, efficiently solve the problem of elastic force distortion and two shaft concentricities, manipulator is contacted with 15 one-tenth lines of axle all the time, when external force effect makes it to be out of shape by force the time, there is an end to throw off automatically, naturally recover again when external force is eliminated, avoided the off-axis phenomenon.

Claims (4)

1, a kind of gold dredger bottom roll sealing device, comprise sealing ring, sealing shroud, axle sleeve, lining, retaining mechanism and bearing block, it is characterized in that: pusher 2 is installed on the ring flange 18,4 and floating-ring seal cover 14, has helicla flute on pusher 2 inner rings and pusher 4 outer rings, have annular groove on the bulge loop inner rings on the floating-ring seals cover 13 fixing blue dishes 3 that match with floating-ring seal cover 14, ring flange 3 is fixed on bearing block 5 one ends of duck's egg shape, on the axle 15 outer astragal spiral fluted spiral thrust splicing sleeve 7 is arranged, have the outer ring to establish the lining 6 of oil groove between splicing sleeve 7 and the duck's egg oblique crank Z bearing 5; Locking nut 17 has the convex edge, is fixed with blade 8 on it.

2, gold dredger bottom roll sealing device as claimed in claim 1 is characterized in that there is pressure release space chamber 12 at the middle part of floating-ring seal cover 13 and 14, has two-way spiral groove on the inner ring of floating-ring seal cover 14.

3, gold dredger bottom roll sealing device as claimed in claim 1 is characterized in that cooperating for movingly of lining 6 and bearing block 5 and thrust bearing cover 7.

4, gold dredger bottom roll sealing device as claimed in claim 1 is characterized in that all constituting duck's egg oblique crank Z bearing 5 and being connected of manipulator hinges and connects.

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