CN103671089A - Novel power end of three-cylinder tailing filling pulp pump - Google Patents

Abstract

The invention belongs to a novel power end of a three-cylinder tailing filling pulp pump in fluid conveying equipment. The novel power end comprises a low-speed crankshaft and a high-speed half shaft, wherein power is transmitted between the low-speed crankshaft and the high-speed half shaft through a herringbone transmission gear; the high-speed half shaft does not penetrate through a stander; one end of the high-speed half shaft is arranged on one side of the stander through a high-speed bearing, and the other end of the high-speed half shaft is arranged on a supporting ribbed plate through another high-speed bearing; the supporting ribbed plate is fixed in a pump cavity. The novel power end of the three-cylinder tailing filling pulp pump, which is disclosed by the invention, is designed to improve the rigidity and the stability of a high-speed transmission shaft; a long shaft penetrating through the stander is replaced by the half shaft; the supporting ribbed plate is additionally arranged in the pump cavity to fix parts, such as the bearings, of the high-speed transmission shaft; the pivot distance of the transmission gear is shortened, and the bearing capacity under the same shaft neck is greatly improved; meanwhile, due to the additional arrangement of the supporting ribbed plate, the rigidity and the bearing capacity of the whole stander are improved by almost 1/3.

Description

Three cylinder mine tailing stowing pulp pump new type power ends

Technical field

The invention belongs to fluid carries and equipment technical field, the particularly improvement of three cylinder mine tailing stowing pulp pumps.

Background technique

To the beginning of the fifties, abroad start to adopt and select factory's classified tailings to carry out slush the forties in 20th century.In this filling process, exist the thin mud of excessive-20 μ m, the surface that it stays stope filling layering, makes back production be difficult to carry out, and cannot form the firm side wall that can support oneself.Enter after the sixties in 20th century, the countries such as the U.S., Canada, Australia, Germany, the former Soviet Union and China, developed new preparation, the conveying equipment of filling slurry, add the application of trackless mining equipment, consolidated fill technique has been obtained progressive hugely, the appearance of mining with stowing is taken on a new look.But because the slip real quality concentration of using in production reality is only generally 60%～68%, in dehydration in stope process, because segregation appears in slip, the waste water going out from stope diafiltration, can take away part of cement and fine particle stage material unavoidably, increase cement and run off, reduce strength of filling mass, improve mining cost, pollute operating environment, more seriously cement enters and selects factory with ore, to ore dressing, brings harmful effect.To 20 century 70s, many mines take measures slip real quality concentration to bring up to more than 70%～78%, high concentration that Here it is or dense mortar cementitious filling.The states such as China, Germany, South Africa, the U.S., Canada, Kazakhstan, Austria, adopt different technique, have successively realized full tailings highly concentrated cemented fill.This kind of filling method is most widely used, up to the present, in filling in mine still in the highest flight.Paste body filling is just to grow up for nearest more than 10 years, is one of new technology with high content of technology in current mining industry.Filler is the mixture of full tailings or full tailings and rubble.This filling slurry is without dehydration, having reduced underground filling pollutes and effluent cost, strength of filling mass is high and cement consumption is little, can reduce filling cost, reduce packing job cycle period, and filler is easy to connect top, be conducive to Stope stability and mining safety, be the direction of Cut-and-fill Mining Technology development.

Full mine tailing filling is due to the development trend that can alleviate environmental pollution that the outer row of mine tailing brings and Safety of Tailings Dam hidden danger and become following mine tailing filling.On the other hand, for fully reclaiming underground resources, strengthen ecological environmental protection dynamics, the method for mining by the way of filling has become the developing direction of modern underground mining technology, and it can extend mine age, guarantees Mine Sustainable Development.But because old-fashioned filling process is substantially all to utilize the artificial or discrepancy in elevation to borrow the methods such as flow by gravity transportation that mine tailing rubble or the filling slurry that is stirred are delivered to goaf, there is manufacturing efficiency low, labor intensity is large, diafiltration waste water and thin sludge-polluted subsurface environment, mine tailing and goaf cannot connect top, the shortcomings such as tailings utilization ratio is low, mining cost height.So it is imperative to research and develop new mining with stowing technique and filling slurry conveying equipment.The slurry pump that NB series filling pump is researched and developed for full tailings highly concentrated cemented fill technique just, can realize mine tailing high concentration, remote filling continuously, further improve cemented fill intensity, be beneficial to stope filling and connect top, be beneficial to stope underground pressure management, be beneficial to the abundant recovery of mining deposits, to improving mine tailing stowage capacity, have extremely important meaning.

In the core component pump of three cylinder mine tailing stowing pulp pump power ends, reducing gear structure is that transmission of power by prime mover is to first order high speed shaft, by a pair of herringbone tooth transmission, rotating power is delivered on low speed bent axle, through connecting rod, complete the conversion that rotating power becomes to-and-fro motion power.How not reducing under the prerequisite of frame bearing capacity, improving the support stiffness of integral-rack, alleviating frame weight simultaneously, is the core of this new type power end structure design.

Traditional structural design as shown in Figure 1, illustrate No. 2 high speed shafts and adopt diagram No. 4 bearing two end supports wide with frame, whole high speed shaft crosses frame, illustrate No. 3 herringbone gears and be arranged in two cylinder positions, can find out like this: two bearings strong point span is far away, rigidity requirement to No. 2 high speed shafts is higher, and two ends framework lateral plate rigidity, stability requirement is higher equally, for reaching this purpose, when design, except necessary reinforcement, can only increase this two-part physical dimension, cause body overall dimension to strengthen, support span is far away, driving gear engagement property is poor, bring transmission noise large, whole body is shorter projected life.

Summary of the invention

The present invention seeks to for existing stowing pulp pump power end structural feature, in high high concentration, high pressure, during the defeated continuous operation of filling slurry of high capacity send, how to improve the bearing capacity of power end, reduce running noise, reduce pump bulk volume, be reduced in integral pump group weight, improve plant machinery efficiency, thereby improve the reliability of equipment.

Three cylinder mine tailing stowing pulp pump new type power ends, it comprises low speed bent axle and high speed semiaxis, between low speed bent axle and high speed semiaxis, pass through herringbone driving gear transferring power, and described high speed semiaxis is not for connecting the semiaxis of frame, one end is arranged on frame one side by high-speed bearing, one end is arranged on bearing rib by high-speed bearing in addition, and bearing rib is fixed in pump chamber.

At high speed half shaft end, be fastenedly connected with supporting sleeve and power taking minor axis, the other one end of supporting sleeve is fixedly connected with frame, and power taking minor axis is positioned at supporting sleeve and other one end is arranged on oil pump power taking bearing.

Triplex mud pump new type power end of the present invention is designed to increase rigidity and the stability of driven high-speed axle, change the major axis of this perforation frame into semiaxis, in pump chamber, increase bearing rib, fix the parts such as bearing of high-speed drive shaft, shortened the pivot distance of driving gear, bearing capacity under equal axle journal is improved greatly, while is due to the increase of bearing rib, make rigidity and the bearing capacity of integral-rack improve nearly 1/3rd, for solving right side gear oil pump power taking problem, in the employing of minor axis end, be fastenedly connected mode and increase supporting sleeve, oil pump power taking bearing, power taking minor axis solves this problem.By these measures, save the material of high speed shaft, reduce integral pump group weight, most importantly greatly improved the bearing capacity of whole pump power end and reduced operation noise, reached more than 20 years the working life of frame housing, owing to having increased rigidity and stability, also bring up to more than 15 years the working life of bearing and gear.

accompanying drawing explanation

Fig. 1 is the mud pump power end schematic diagram of conventional construction.

Fig. 2 is structural representation of the present invention.

embodiment

If Fig. 2 is the specific embodiment of the invention.Shown in Fig. 2, for improving rigidity and the stability of high speed semiaxis 2, change the major axis that originally connected frame into semiaxis, in pump chamber, increase bearing rib 5 and fix high-speed drive bearing 4, shortened the pivot distance of herringbone driving gear 3, bearing capacity under equal axle journal is improved greatly, increase due to bearing rib 5, make rigidity and the bearing capacity of integral-rack improve nearly 1/3rd, for solving right side gear oil pump power taking problem, increased supporting sleeve 6, oil pump power taking bearing 7, power taking minor axis 8 and solved this problem.By these measures, save the material of high speed shaft, reduce integral pump group weight, most importantly greatly improved the bearing capacity of whole pump power end and reduced operation noise, reached more than 20 years the working life of frame housing, owing to having increased rigidity and stability, also bring up to more than 15 years the working life of bearing and gear.In Fig. 1 Fig. 2, reference character 1 is low speed bent axle.

Stowing pulp pump important technological parameters made in accordance with the present invention:

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Claims (2)

1. three cylinder mine tailing stowing pulp pump new type power ends, it is characterized in that comprising low speed bent axle (1) and high speed semiaxis (2), between low speed bent axle (1) and high speed semiaxis (2), pass through herringbone driving gear (3) transferring power, and described high speed semiaxis (2) is not for connecting the semiaxis of frame, one end is arranged on frame one side by high-speed bearing (4), one end is arranged on bearing rib (5) above by high-speed bearing (4) in addition, and bearing rib (5) is fixed in pump chamber.

2. three cylinder mine tailing stowing pulp pump new type power ends according to claim 1, it is characterized in that being fastenedly connected with supporting sleeve (6) and power taking minor axis (8) in high speed semiaxis (2) end, supporting sleeve (6) is fixedly connected with frame one end in addition, and power taking minor axis (8) is positioned at supporting sleeve (6) and other one end is arranged on oil pump power taking bearing (7).

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