CN2444694Y - Centrifugal foundry machine for casting il-well pump abrasion-resistant cylinder - Google Patents

Abstract

The utility model relates to a centrifugal foundry machine for casting abrasion-resistant cylinder sleeves of an oil-well pump, belonging to the technical field of a casting machine. A dc high-power electrode is used for casting, and speed can be regulated. Both ends of a main shaft are provided with awl roller bearings. A cold water tank is arranged on a bearing shell at the front end. The whole operation is completed on a total console. Cylinder sleeve blank can be successfully cast in low reject rate. The centrifugal foundry machine is especially adapted to cast the cylinder sleeves of the oil-well pump, and is the casting machine with practical use, high efficiency, and serialization.

Description

The centrifugal casting machine of casting oil well pump wear resisting cylinder jacket

The utility model belongs to the foundry machinery technical field, relates to a kind of centrifugal casting machine of casting tubing pump antifriction alloy white cast-iron cylinder sleeve.

Although at present domesticly just researching and developing and use novel oil well pump, as integral pump, immersion depth well pump, traditional tubing pump are through the application of decades, and its quantity is big, is difficult to replacing for the moment.The cylinder sleeve of tubing pump, owing to adopt Soviet Union's standard fifties, material is a 35CrMo quality carbon steel material, because the bore difference of oil well pump, specification is many, so the unmanned production of the pipe of cylinder sleeve.Manufacturing firm can only cut and processes by drawing the hole with first steel, and endoporus adopts that carburizing tech is handled, to be HRC58-60C ° mainly be because hardness is not high to hardness, service life only one year about.Be raising material hardness, and save material that adopting casting, particularly centrifugal casting to produce antifriction alloy white cast-iron cylinder sleeve pipe is a practical way.Mostly present existing centrifugal casting machine, power is alternating current generator if adopting, the control revolution is convenient not as direct current generator; The 2nd, mostly foundry goods releasing process, general centrifugal casting machine are to adopt the linkage manual operations, unreasonable and dangerous; The 3rd, it is bold inadequately that centrifuge principal axis holds use, and the 4th, be provided with a total maneuver control device.

The purpose of this utility model, realize by following design: this wear resisting cylinder jacket of tubular oil pump centrifugal casting machine, be by motor (1), drive (2), driving belt (3), centrifuge die end cap (4), cast steel die (5), the inner push rod cup (6) of main shaft, copper sheathing (7) in the main shaft, centrifuge hollow spindle (8), antifriction-bearing case (9), single-row tapered roller bearing (10), the practical push rod (11) of main shaft Inner Front End, main shaft third gear vee-pulley (12), biserial is spherical bearing (15) entad, two-row ball bearing housing (16), hydraulic cylinder assembly (17), centrifugal fuselage (18), attachment screw pin (19), connect supporting seat (20), centrifuge supervisory control desk formations such as (21) is characterized in that: motor (1) adopts direct current 3KWZ type totally-enclosed machine, has set up the cooling water tank (24) that has water inlet (22) and refluxing opening (23) on centrifuge front end antifriction-bearing case (9) structure, the front end of hollow spindle (8) is equipped with single-row cone rolling (10), there is entad spherical bearing (15) of biserial the rear end, drives hydraulic cylinder assembly (17) by motor (1), and hydraulic fluid is from inlet (25) and outlet (26), make centrifugal fuselage (18) fixing by attachment screw pin (19) and connection supporting seat (20), all control by discrete supervisory control desk (21) and finish.

The utility model centrifugal casting machine is being ensured the quality of products, and raises the efficiency, and under the principle of the rate of reducing the number of rejects and seconds, the cast of employing chill mold casting method for centrifugal must change the old kind of drive and version just can be applicable to continuous production requirement.First characteristics of this centrifugal casting machine are to adopt direct current 3KW Z type totally enclosed motor (1), drive spindle pulley (2) by three A type V belts (3) and make chill 45 ^#Steel mold (5) rotation, aerial from the center of end cap (4), iron is poured into rotating centrifugal moulding in the die cavity, the technical process of this moulding, slow speed when needing biscuit fire is along with the cast workpiece progressively thickens, when endoporus dwindles gradually, the revolution of centrifuge must increase thereupon, otherwise can cause work piece inner surface different with the outer surface metallographic structure and influence quality.The employing direct current generator just can be on the console panel of (21), and the operator can adjust electrode rotating speed control (31) knob in time along with cast, and the revolution of the tachometer on the open-and-shut observation console panel of energy.This has just overcome the centrifuge that promptly has and has only driven the starting and to end all be the disadvantage of a dead revolution of disembarking with alternating current generator.Second design feature is: after pour mass solidifies, when workpiece red heat shape, workpiece can be pushed away from punching block outside mould with hydraulic cylinder rotary control valve knob on console panel, operator's derotation valve knob again can make the push rod playback again.Having overcome the past releases the heavy way that workpiece and despining are return with manually-operated handwheel rotating threaded shaft, or with the way of hand control lever, promptly occupies the labour slowly again.The 3rd characteristics are: it is to adopt the awl that dare not adopt of associating to roll and double awl rolling bearing (10) that centrifuge principal axis holds, (15), because behind the high heating molten steel of punching block rotary casting, its thermal energy conduction is to main shaft and rolling bearing, it is more and more higher to make it temperature rise, and cause rolling bearing to be annealed or fragmentation, the utility model has not only adopted rolling bearing, and on the bear box structure, set up cooling water tank (24), after the centrifuge starting, start water supply pump (28) immediately, make and pump in cooling water enters annular space in the bear box from water inlet (22) pipe on the bear box, when reaching certain altitude, chilled water manages reflow tank from overfall (23) again, in this does not cut off the water supply circulation, constantly will conduct the torrid zone and walk, the maintenance unlikely continuous intensification of rolling bearing and the disadvantage of damaging.This has just overcome old-fashioned centrifuge, makes the main shaft temperature rise too high because of conducting heat, even use brasses without rolling bearing, also because of the temperature height not only destroyed the lubricating oil film axle with watt defibrator process to wipe one be quick abrasion, the 2nd, axle and watt frequent heat are killed.The 4th characteristics are multinomial manipulation work such as startings such as the monitoring of main motor and hydraulic oil pump motor, control valve, oil pressure table and cooling water pump motor and shutdown; all concentrating on supervisory control desk (21) is upward handled by a people; this just makes to be in operation not only saves manpower, and its inertia has also been strengthened.After structural design reform, be in operation and feel that this structural change is reasonably, thereby improved benefit, alleviated labor intensity, saved the labour, improved quality, reduce the blank percent defective.

The utility model accompanying drawing 1 is the floor map of centrifugal casting machine structure, also is Figure of abstract.Fig. 2 is that supervisory control desk and pipeline connect schematic diagram.Among the figure:

1, direct current 3KWZ type totally enclosed motor

2, triangle third gear belt pulley

3, A type balata belt

4, centrifuge die end cap

5,45 of the foundry goods specification ^#The cast steel die

6, main shaft Inner Front End push rod cup

7, steel bushing in the main shaft

8, centrifuge hollow spindle

9, centrifuge front end antifriction-bearing case

10, single-row cone rolling

11, the solid push rod of main shaft Inner Front End

12, main shaft third gear vee-pulley

13, front end push rod and rear end hydraulic stem are connected and fixed screw

14, the attaching nut of front and back end push rod

15, biserial spherical bearing entad

16, two-row ball bearing housing

17, hydraulic cylinder assembly

18, centrifugal fuselage

19, attachment screw pin

20, connect supporting seat

21, centrifuge supervisory control desk

22, cooling water inlet

23, cool back head piece

24, cooling water tank

25, hydraulic fluid inlet

26, hydraulic fluid outlet

27, hydraulic pump group

28, water pump group

29, hydraulic control

30, cooling water control

31, motor speed control

The utility model is at casting C3.6, Mn0.7, and Si0.5, P0.06, S0.05, when Cr15.0, the alloy material of Mo3.0 percentage composition, the cylinder liner blank hardness that obtains reaches HRC62-65 ℃.

The blank that obtains like this, handle through softening again, promptly in batch-type furnace, slowly be warming up to 950 ℃, be incubated 1 hour, be cooled to 820 ℃ with 1.5 hours, be incubated 4 hours, reduce to room temperature with furnace temperature and come out of the stove, this softening blank is carried out the semifinishing cutting, and then carry out Quenching Treatment, and promptly in shaft furnace, slowly be warming up to 1000-1050 ℃, be incubated after heat in 1 hour and come out of the stove, be positioned on the special built on stilts frame, temper is carried out in evenly cooling again in the air in batch-type furnace, is warming up to 200-260 ℃, be incubated 1 hour, treat that furnace temperature reduces to room temperature and come out of the stove.Foundry goods after the tempering carries out grinding, and honing processing endoporus light knot degree obtains the finished product cylinder sleeve.

Claims (1)

1, a kind of oil well pump wear resisting cylinder jacket centrifugal casting machine, by motor (1), drive (2), driving belt (3), centrifuge die end cap (4), cast steel die (5), the inner push rod cup (6) of main shaft, copper sheathing (7) in the main shaft, centrifuge hollow spindle (8), antifriction-bearing case (9), single-row cone rolling (10), the solid push rod of main shaft Inner Front End (11) main shaft third gear three horn rings (12), biserial is spherical bearing (15) entad, two-row ball bearing housing (16), the total territory of hydraulic cylinder (17), centrifugal fuselage (18), attachment screw pin (19), connect supporting seat (20), centrifuge supervisory control desk formations such as (21), it is characterized in that motor (1) adopts direct current 3KWZ type totally enclosed motor, set up the cooling water tank (24) that has water inlet (22) and refluxing opening (23) on centrifuge front end antifriction-bearing case (9) structure, the front end of hollow spindle (8) is equipped with single-row cone rolling (10), there is entad spherical bearing (15) of biserial the rear end, two hydraulic fluid inlets (25) and (26) are arranged on the hydraulic cylinder assembly (17), make centrifugal fuselage (18) fixing by attachment screw pin (19) and connection bearing (20), all control and finish in discrete supervisory control desk (21).

Images