CN2578549Y

CN2578549Y - Reciprocal pneuamtic oil sucking pump

Info

Publication number: CN2578549Y
Application number: CN 02281691
Authority: CN
Inventors: 邴慧源
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-22
Filing date: 2002-10-22
Publication date: 2003-10-08
Anticipated expiration: 2012-10-22

Abstract

The utility model relates to a reciprocal pneumatic oil sucking pump. A pneumatic piston assembly, an oil sucking assembly and a middle pump shell are arranged on a main shaft in a shell body; an air inlet and an exhaust hole are arranged on the shell body. An oil inlet valve assembly, an oil draining assembly, an oil inlet pipe and an oil draining pipe are respectively arranged on a front end cover and a back end cover. A pneumatic reversing valve which comprises a valve shell, an air inlet, an outlet hole and a sliding valve core is arranged on the top of the shell body; one annular air groove and a valve core exhaust port are arranged in the middle of the pneumatic reversing valve. When the utility model is used, high pressure air from a total air source can enter the sliding valve core through the pneumatic reversing valve; the valve core can be pushed for sliding through the annular air groove. When the annular air groove is aligned to one air inlet above the middle pump shell body, airflow flows into an air cylinder; the plunger can be pushed to move from left to right; thereby, the circulation of sucking and draining oil can be completed.

Description

Reciprocating type pneumatic oil well pump

Technical field

The utility model relates to a kind of reciprocating type pneumatic oil well pump, reciprocating type (two oil cylinder) oil well pump that is to use cylinder to promote, and it belongs to the pump apparatus that industrial and mining enterprise use.

Background technique

What the use in the production link of oil pumping of present industrial and mining enterprise was maximum is pump apparatus, but most pump type efficient is lower, and needs electric drive.Though power-actuated pump class can satisfy the requirement of most of production processes, but under the production environment in some factory, ore deposit, use and be not optimal selection, inflammable gas volatilization or leakage are for example arranged in the workshop of oil refining, chemical industry and explosion-proof industry unavoidably, when power equipment (motor, circuit, switch) produces electrical spark, just breaking out of fire easily, explosive accident bring hidden danger to safety in production.In addition, common this type of power equipment rotating speed and power are specified, and is nonadjustable, though the power equipment rotating speed adjustable of minority is arranged, it is additional facilities in addition, makes complex structure, and cost improves.

Summary of the invention

The purpose of this utility model is: a kind of reciprocating type pneumatic oil well pump is provided, and the shortcoming that it has overcome electrification equipment has improved safety guarantee; And adjustable-speed, compact structure.

The technical solution of the utility model is:

Reciprocating type pneumatic oil well pump is provided with a housing, and main shaft is housed in housing, and pneumatic piston assembly and swabs assembly are housed on main shaft; Pump case also be equipped with one in housing in the middle of which is provided with inlet hole and exhaust port.Middle pump case is fixedlyed connected with rear end cover with front cover.In forward and backward end cap, be provided with oiling valve assembly and draining valve assembly and oil duct, be provided with oil inlet pipe and oil exit pipe, be provided with adpting flange in their outer end in the outside of forward and backward end cap.Air operated reversing valve is equipped with at top at housing, comprise that valve casing, inlet hole and air inlet prop up the hole, and sliding valve core, end at sliding valve core is provided with a spool locator slide, it matches with opposed spool positioning rod, be provided with a belt air drain at the middle part of sliding valve core, its both sides respectively are provided with the spool exhaust port.Be provided with exhaust port in commutation valve casing bottom.The mutual alignment in the inlet and outlet hole on sliding valve core and valve casing and the middle pump case is accurately to mate.The under shed of the inlet hole of middle pump case and the mutual alignment of two pneumatic pistons and the stroke of piston are complementary.

The utility model has the advantages that:

1. because reciprocating type pneumatic oil well pump uses the total source of the gas from industrial and mining enterprise, do not need to be provided with electrical source of power in the production place, the hidden danger of having avoided electrical spark to bring, safe in utilization.

2. regulate air pressure by control damper, make its reciprocating speed that changes main shaft, to adapt to the demand of different situations.

3. because the suction port control valve of oil well pump by being connected with total source of the gas for its pipeline, has saved many equipment, therefore simple and compact for structure, cost is low.

Description of drawings

Below in conjunction with an embodiment and with reference to accompanying drawing the utility model is elaborated:

Fig. 1 is the sectional view of the utility model along Y;

Fig. 2 be sliding valve core M to limit position figure;

Fig. 3 be sliding valve core N to limit position figure.

Embodiment

Shown in Fig. 1,2 and 3, reciprocating type pneumatic oil well pump comprises housing 1, is provided with main shaft 2 and one group of pneumatic piston 3 and two pairs of piston rings 4 in housing 1, also comprises one group of swabs 5 and two pairs of swabs rings 6.Pneumatic piston 3 is fixedly installed on the main shaft 2 by key 8 and lock nut 10.Swabs 5 is fixedly set on the main shaft 2 by key 7 and lock nut 9.This pneumatic piston 3 and swabs 5 are dicyclo groove structure, and piston ring 4 and 6 separately is housed on it.Pump case 11 in the middle of being provided with is provided with inlet hole 12 and exhaust port 14 in it.Cylinder liner 15 and cylinder sleeve baffle plate 16, and oil pumping cylinder sleeve 17.On described housing 1 fixed base 18, base 18 can be fixed by the platform that stone bolt and ground are provided with.Front cover 19 and rear end cover 20 are housed on this housing 1, and they use screw 21 to fixedly connected with middle pump case 11 respectively.In front cover 19 and rear end cover 20, be provided with oiling valve assembly 22 and draining valve assembly 23, and be provided with oil duct 25 and pass to front and

rear cover

19,20, be provided with at forward and backward

end cap

19 and 20 outsides, oil expulsion channel 24,26.Advance, the outer end of

oil exit pipe

24,26 is provided with adpting flange 27, in order to connect outer transport pipe.In addition, front cover 19 and rear end cover 20 are provided with spindle hole, and sliding shaft sleeve 28 is housed in the hole, and at its outer end installation shaft cover gland 29, they are fixed with front cover 19 and rear end cover 20 usefulness screws 30.The two ends of reciprocating type pneumatic oil well pump and internal structure are symmetrically arranged in the vertical.Be provided with air operated reversing valve 31 at the top of housing 1, comprise a valve casing 32, be provided with valve casing inlet hole 33 in the centre on valve casing 32 tops, hole 34 is propped up in air inlet; In the inside of valve casing 32 sliding valve core 35 is housed, is provided with a spool locator slide 37 at an end of sliding valve core 35 and matches with opposed spool positioning rod 36, be provided with an annular gas tank 38 at the middle part of sliding valve core 35, its both sides respectively are provided with one group of spool exhaust port 13.Polytetrafluoroethylsealed sealed pad 39 and union (screwed)bonnet (UB 40 and 41 are housed in the hole at valve casing 32 two ends.Valve casing 32 is fixedlyed connected with middle pump case 11 usefulness screw (not shown).It is corresponding with the exhaust port 14 of middle pump case 11 also to be provided with selector valve exhaust port 44 on selector valve 31.The assembly structure of this selector valve also is vertically symmetrical.

Reciprocating type pneumatic oil well pump in use, the suction port of its gas control valve H is connected with total gas source pipe by steam line.When pneumatic oil well pump is worked, open control valve, prop up hole 34 from the high pressure draught of the total source of the gas inlet hole 33 by selector valve 31 by air inlet and enter sliding valve core 35, air communication is crossed the annular gas tank 38 steering flow directions on the sliding valve core 35, making air-flow promote spool 35 slides, when hole in the inlet hole 12 on the pump case 11 in the middle of annular gas tank 38 alignings, air-flow just flows into cylinders along this inlet hole 12, and promotes pneumatic piston 3 move left and right.Set oil cylinder exhaust port 42 helps to promote spool.Subsequently, pneumatic piston 3 is passed to swabs 5 by main shaft 2 with power again, makes swabs 5 move left and right and produces pull of vacuum, under the effect of this suction, makes into,

oil extraction assembly

22 and 23 beginnings work in order, finish take out, oil extraction circulation.Gas in middle pump case 11 and cylinder is discharged by the exhaust nozzle 43 of being located at the bottom, make that to have pressure stable in the high pressure draught that enters in the cylinder and the housing poor, to guarantee that pneumatic piston 3 can obtain stable air pressure energy in the cylinder, reciprocating type pneumatic oil well pump is worked reposefully.If when needing to change the speed of pneumatic oil well pump, only need the open degree of adjustments of gas control valve H to get final product.The lubrication ring 45 that outside the sidewall of the inlet hole 33 of valve casing 32, is communicated with a routine.Particularly importantly, the mutual alignment of the

pore

12,13,14 on sliding valve core 35 and valve casing 32 and the middle pump case 11 is accurately corresponding.The under shed of the inlet hole 12 of middle pump case 11 and the mutual alignment of two pneumatic pistons 3 are determined according to the stroke of piston.

All modified structures of doing by principle of the present utility model all belong to protection domain of the present utility model.

Claims

1. reciprocating type pneumatic oil well pump is characterized in that:

Be provided with a housing (1), main shaft (2) is housed in housing (1), pneumatic piston assembly (3,4) is housed on main shaft (2), and swabs assembly (5,6); Pump case (11) also be equipped with one in housing (1) in the middle of which is provided with inlet hole (12) and exhaust port (14); Middle pump case (11) is fixedlyed connected with forward and backward end cap (19,20), in forward and backward end cap (19,20), be provided with oiling valve assembly (22) and draining valve assembly (23) and oil duct (25), be provided with oil inlet pipe (24) and oil exit pipe (26) in the outside of forward and backward end cap, be provided with adpting flange (27) in their outer end;

At housing (1) top air operated reversing valve (31) is housed, comprise valve casing (32), hole (34) is propped up in inlet hole (33) and air inlet, and sliding valve core (35), having a spool locator slide (37) and opposed spool positioning rod (36) to be complementary at an end of sliding valve core closes, be provided with an annular gas tank (38) at the middle part of sliding valve core, its both sides respectively are provided with spool exhaust port (13); On selector valve (31), also be provided with exhaust port (44); The mutual alignment in the inlet and outlet hole (12,13,14 and 44) on sliding valve core (35) and valve casing (32) and the middle pump case (11) is accurately to mate; The stroke coupling of the under shed of the inlet hole (12) of middle pump case (11) and the mutual alignment of two pneumatic pistons (3) and piston.