CN203892202U

CN203892202U - Vertical slush pump

Info

Publication number: CN203892202U
Application number: CN201420281438.7U
Authority: CN
Inventors: 戴年歌
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-29
Filing date: 2014-05-29
Publication date: 2014-10-22
Anticipated expiration: 2024-05-29

Abstract

The utility model relates to a vertical slush pump which comprises a pump shell, a pump cover, a pump seat, a supporting barrel, a motor seat, a motor and a spindle. The pump seat is connected to the top of the pump shell, and the pump cover is connected between the pump shell and the pump seat. The top of the pump seat is connected with the supporting barrel, the top of the supporting barrel is connected with the motor seat, and the motor seat is provided with the motor. The upper end of the spindle is connected with the motor, the lower end of the spindle is connected with an impeller inside the pump shell, and the motor seat and the pump seat are respectively provided with a bearing chamber. The vertical slush pump is characterized in that spiral sealing sleeves are arranged in a shaft hole of the pump seat and a shaft hole of the pump cover, the spiral sealing sleeves are fixed connected to the spindle in a sleeved mode, and when the spindle rotates, the spiral sealing sleeves and the shaft hole of the pump seat and the shaft hole of the pump cover are in a sealing state; a framework oil seal is arranged between the spiral sealing sleeve in the shaft hole of the pump seat and the bearing chamber of the pump seat, the framework oil seal is fixedly connected to the spindle in a sleeved mode, and when the spindle rotates or is in static, the framework oil seal and the shaft hole of the pump seat are in a sealing state. The vertical slush pump is completely sealed, and slush can be prevented from entering the bearing chambers or mounting holes.

Description

A kind of Veritical mud pump

Technical field

The utility model relates to a kind of slurry pump, is specifically related to a kind of Veritical mud pump.

Background technique

The slurry pump that domestic project uses, the type of the design eighties of always continuing to use.Because of work under bad environment, sealed bearing housing is not well solved always eventually, causes pump work reliability and working life extremely low, once enter mud in bearing, by stuck main shaft, burn-down of electric motor, makes maintenance cost high, brings very big economic loss to user.Although in the past few years improve through some designers, as the patent of announcing has: 97236194.4,90219311.2,00213010.6,94217631.6, eventually because of poor effect, in engineering, the existing slurry pump using also rests in the level eighties.

The protection of original slurry pump bearing chamber is mainly to use some outside framework oil seals, increases the life-span, and there are two outside framework oil seals at cover plate place, blade wheel of slurry pump top, 4 outside framework oil seals of bearing end opening, and what have has even used 6.Upper impeller cover plate place is subject to pump case inner high voltage dredge pump when outside framework oil seal work, and the encirclement of outside mud, and outside framework oil seal lip part is easy to adhere to sand, and wear spindle as emery wheel, makes seal failure.In the outside framework oil seal work of bearing end opening, generally on the water surface, because outside framework oil seal lip and main shaft are friction motions, produce amount of heat, add it is that many groups are used, the portion temperature that main shaft is contacted with outside framework oil seal is high especially.Outside framework oil seal is rubber parts, is easy to melt lost efficacy, and adjacent bearing is subject to temperatures involved with it, and bearing is easy to annealing, and hardness and rub proofness reduce, and bearing very easily damages stuck.As under the water surface, the sand in slurry pump sticks on oil seal lip, makes very soon spindle abrasion, seal failure, bearing enter after slime water stuck, cannot rotate burn-down of electric motor.

The place of another the heel of Achilles original motor seat bearing upper end and mounting hole handing-over, be plane type and position lower than mounting hole bottom.Once there be slime water just to enter and cannot discharge from mounting hole, flow in bearing along main shaft and support gap, damage bearing.

The patent No. 00213010.6,94217631.6,00213010.6 patent is many water retaining rings on the slurry pump using in existing engineering, a rear patent 94217631.6 centrifugal drying water ponds are many part 13a, the design of this two schemes of 13b. all do not consider when whole pump seat is all in mud in on-the-spot a lot of situations and just do not have any effect, and mud enters bearing chamber from water retaining ring, above water-throwing disk and makes seal fails.So above-mentioned two patents can only play the effect of gear mud, life-saving in perfect condition.The patent No. 90219311.2 is mainly on the basis of existing slurry pump, mainly to have increased the axial flow wheel that blocks water, according to " when work, main shaft drives axial flow wheel synchronous rotary, outwards promotes mud, stops mud to enter oil sealing position " described in specification.Described in its specification, outwards promote mud, when being described, its rotation has one air-flow outwards promoting, and there is air-flow to go out and must have local air inlet, from this specification and accompanying drawing, gas can only be along pump seat, endoporus surrounding wall upper air.When work on the spot, this place does not have air to enter, and can only be that slime water is inhaled into.The wearing and tearing of Sealing and between centers have been accelerated in the design of this scheme on the contrary, reduce the life-span of pump.

The patent No. 97236194.4 is a kind of very successful designs theoretically, strictly uses by designing requirement, and the life-span of pump can be very long.But in real using process, on-the-spot environment, and user's mechanical knowledge level is far from being enough.Its figure pressure hydroecium need to have clear water supply endlessly, and will have certain pressure, and this pressure size will constantly be adjusted with the abrasion condition of the wheel hub 14 of spiral case 2 and impeller 1.Being implemented in of this process is technical more difficult.In another grease chamber, need to fill machine oil, because of in use upright work of slurry pump, Sealing 5 belongs to mechanical seal, and its sealing surface is generally cemented carbide or carbocyclic ring, need to have fluid cooling when work.Once the height that fluid has leakage or liquid level height not to reach sealing surface will make this mechanical seal lose efficacy.Grease chamber seals, and there is no again oily window, and when on-the-spot use, whether workman's difficulty finds oil starvation.Once oil starvation, mechanical seal two sealing contact surface heatings, bite mutually, destroy former smooth surface, make seal failure.

Summary of the invention

For solving deficiency of the prior art, the purpose of this utility model is to provide a kind of abundant sealing, avoids mud to enter the Veritical mud pump of bearing chamber or mounting hole.

For reaching above object, the technological scheme that the utility model is taked is:

A kind of Veritical mud pump, comprise pump case, pump cover, pump seat, supporting drum, motor cabinet, motor and main shaft, described pump seat is connected in pump case top, between described pump case and pump seat, be connected with pump cover, described pump seat top is connected with supporting drum, described supporting drum top is provided with motor cabinet, on described motor cabinet, motor is installed, described main shaft upper end connects motor, main shaft lower end is connected with pump box-shrouded impeller, on described motor cabinet and pump seat, be equipped with bearing chamber, in described pump seat axis hole and pump cover axis hole, be equipped with spiral seal cover, described spiral seal cover is fixedly sleeved on main shaft, in the time that main shaft rotates, spiral seal cover and pump seat axis hole and pump cover axis hole are sealing state, between the spiral seal cover in described pump seat axis hole and pump seat bearing chamber, be provided with outside framework oil seal, described outside framework oil seal is fixedly sleeved in main shaft, and in the time that main shaft rotates or be static, outside framework oil seal and pump seat axis hole are sealing state.

Further, the end face of the bearing chamber of described motor cabinet is the conical surface, and the top of bearing chamber is provided with water dumping wheel, and described water dumping wheel is serially connected with main shaft.

Further, also comprise air pipe, described air pipe passes supporting drum and extends to pump seat axis hole and the gap location of spiral seal cover from motor cabinet top.

Further, described spiral seal cover outer surface is provided with left-handed multi-head spiral groove, in described pump seat axis hole and pump cover axis hole, is equipped with dextrorotation multi-head spiral groove with spiral seal cover corresponding position.

Further, the upper plane of described impeller and/or the lower surface of pump cover are provided with the blade of multiple counterclockwise expansion, and the external frame of blade is involute shape.

Further, described vanes right-handed thread and seam are fixed on the axle head of main shaft.

Again further, between described supporting drum and motor cabinet and pump seat, adopt the sealing of O type circle.

Take after above technological scheme, the beneficial effects of the utility model are:

1. impeller top vane and pump cover bottom are equipped with anticlockwise blade, the external frame of blade is asymptote, and guide vane wheel outside forms the sealing of snail formula, alter to time between upper impeller and pump cover and can be thrown away by blade when the mud in pump case, form the sealing of snail formula; When mud permeates along main shaft pump seat bearing from pump case, under main shaft rotary state, the spiral seal cover on pump cover axis hole and main shaft forms rotary seal, avoids the upwards infiltration of mud; In the time that the pump seat of slurry pump all immerses in mud, under main shaft rotary state, pump seat axis hole and spiral seal cover form rotary seal, under main shaft stops operating state, skeleton oil seal in pump seat axis hole, between axis hole and main shaft, prevents that mud from entering bearing chamber.

2. on axle, load onto a umbrella water dumping wheel, the mud evoking when the mud that working site hydraulic giant has rushed and pump work is thrown away by water dumping wheel, avoids mud to enter bearing from the gap in upper motor seat, axle and seat hole; The upper surface of motor cabinet bearing chamber is the conical surface, prevents from that water dumping from taking turns after the muddy water throwing away splashes to the upper surface of bearing chamber to be back in axis hole.

3. described in, between supporting drum and motor cabinet and part pump seat, adopt the sealing of O type circle, avoid mud to enter bearing from outside.

4. with the air above the spiral seal cover in air pipe UNICOM pump seat axis hole and motor cabinet, spiral seal cover can produce negative pressure when rotated, negative pressure imports air to spiral seal cover place through air pipe, the air of importing outwards ejects the mud entering from spiral seal cover bottom, seals.

The technical program sealing completely, has all been done sealing protection and mud guiding to mud infiltration place likely occurring, thereby has ensured that bearing and link avoid the pollution of mud, improves working life, reduces and keeps in repair the cost that delays work.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of impeller.

In figure: pump case 1, pump cover 2, impeller 3, seam 4, pump seat 5, spiral seal cover 6, outside framework oil seal 7, bearing chamber 8, O type circle 9, supporting drum 10, air pipe 11, motor cabinet 12, water dumping wheel 13, main shaft 14, blade 15, pump cover axis hole 16, pump seat axis hole 17.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is further described:

As shown in the figure: a kind of Veritical mud pump, comprise pump case 1, pump cover 2, pump seat 5, supporting drum 10, motor cabinet 12, motor and main shaft 14, described pump seat 5 is connected in pump case 1 top, between described pump case 1 and pump seat 5, be connected with pump cover 2, described pump seat 5 tops are connected with supporting drum 10, described supporting drum 10 tops are provided with motor cabinet 12, adopt O type circle 9 to seal between described supporting drum 10 and motor cabinet 12 and pump seat 5; On described motor cabinet 12, motor is installed, described main shaft 14 upper ends connect motor, main shaft 14 lower ends are connected with the interior impeller 3 of pump case 1, described impeller 3 is fixedly connected on the axle head of main shaft 14 through right-handed thread and seam 4, the upper plane of described impeller and/or the lower surface of pump cover are provided with the planar vanes 15 of multiple counterclockwise expansion, and the external frame of blade 15 is involute shape; On described motor cabinet 12 and pump seat 5, be equipped with bearing chamber 8, in the pump seat axis hole 17 of the bearing chamber 8 of described pump seat 5 by its below, be provided with outside framework oil seal 7, described sealing framework oil sealing 7 is socketed on main shaft 14, between described main shaft 14 and pump cover axis hole 16, pump seat axis hole 17, be equipped with spiral seal cover 6, described spiral seal cover 6 is serially connected with main shaft 14, its outer surface is provided with left-handed multi-head spiral groove, and described pump seat axis hole 17 and the interior corresponding position of pump cover axis hole 16 are equipped with dextrorotation multi-head spiral groove.The top of described motor cabinet 12 bearing chambers 8 is provided with water dumping wheel 13, and the upper surface of described bearing chamber 8 is the conical surface, and described water dumping wheel 13 is socketed on main shaft 14.The interior cross-under of described supporting drum 10 has two air pipes 11, and described air pipe 11 extends to the gap location between pump seat axis hole 17 and spiral seal cover 6 from motor cabinet 12 tops.

The high-pressure slurry of pump case when slurry pump work, major part is discharged from pump case snail mouth, small part is altered between impeller 3 tops and pump cover 2, from main shaft 14 and pump cover axis hole 16 gaps to external leakage, in the time passing through between impeller 3 tops and pump cover 2, the snail formula sealing being formed by the blade of impeller 3 top vane 15 and pump cover 2 bottoms throws away; Along with slurry pump uses for a long time, pump cover 2 and impeller 3 upper blades 15 wear and tear gradually, have mud along main shaft 14 and pump cover interporal lacuna to external leakage, are blocked by the spiral seal cover 6 in main shaft 14 and pump cover axis hole 16; In the time that the position of slime water exceedes pump seat 5, under pump rotary state, mud is stopped by the spiral seal cover 6 under outside framework oil seal 7, and when pump is static while not working, slime water is blocked by outside framework oil seal 7.

Claims

1. a Veritical mud pump, comprise pump case, pump cover, pump seat, supporting drum, motor cabinet, motor and main shaft, described pump seat is connected in pump case top, between described pump case and pump seat, be connected with pump cover, described pump seat top is connected with supporting drum, described supporting drum top is connected with motor cabinet, on described motor cabinet, motor is installed, described main shaft upper end connects motor, main shaft lower end is connected with pump box-shrouded impeller, on described motor cabinet and pump seat, be equipped with bearing chamber, it is characterized in that, in described pump seat axis hole and pump cover axis hole, be equipped with spiral seal cover, described spiral seal cover is fixedly sleeved on main shaft, in the time that main shaft rotates, spiral seal cover and pump seat axis hole and pump cover axis hole are sealing state, between the spiral seal cover in described pump seat axis hole and pump seat bearing chamber, be provided with outside framework oil seal, described outside framework oil seal is fixedly sleeved in main shaft, and in the time that main shaft rotates or be static, outside framework oil seal and pump seat axis hole are sealing state.

2. a kind of Veritical mud pump according to claim 1, is characterized in that, the end face of the bearing chamber of described motor cabinet is the conical surface, and the top of bearing chamber is provided with water dumping wheel, and described water dumping wheel is serially connected with main shaft.

3. a kind of Veritical mud pump according to claim 1, is characterized in that, also comprises air pipe, and described air pipe passes supporting drum and extends to pump seat axis hole and the gap location of spiral seal cover from motor cabinet top.

4. a kind of Veritical mud pump according to claim 1, is characterized in that, described spiral seal cover outer surface is provided with left-handed multi-head spiral groove, in described pump seat axis hole and pump cover axis hole, is equipped with dextrorotation multi-head spiral groove with spiral seal cover corresponding position.

5. a kind of Veritical mud pump according to claim 1, is characterized in that, the upper plane of described impeller and/or the lower surface of pump cover are provided with the blade of multiple counterclockwise expansion, and the external frame of blade is involute shape.

6. a kind of Veritical mud pump according to claim 5, is characterized in that, described vanes right-handed thread and seam are fixedly connected on the axle head of main shaft.

7. a kind of Veritical mud pump according to claim 1, is characterized in that, between described supporting drum and motor cabinet and pump seat, seals respectively through O type circle.