CN1023911C

CN1023911C - Multipurpose pump for aeration and liquid suction

Info

Publication number: CN1023911C
Application number: CN 91103759
Authority: CN
Inventors: 陈耀辉; 钟苏华
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-04
Filing date: 1991-06-04
Publication date: 1994-03-02
Anticipated expiration: 2006-06-04
Also published as: CN1067482A

Abstract

The present invention relates to a multipurpose pump for inflating and sucking liquid which is composed of a pump base, a pump body, a piston, a piston rod, an air (a liquid) inlet, an air (a liquid) outlet, etc. The inner piston is fixedly connected with the outer piston, the inner piston is provided with a through hole in the stroke direction and is provided with an annular groove in the middle part, and sealing elements which can be moved from top to bottom are arranged in the annular groove. The inner cylinder is sheathed in the out cylinder. Air (liquid) is extruded from the present invention no matter the piston moves upwardly or downwardly, and thereby, the work efficiency of the present invention is enhanced. The air (liquid) exhaust pressure is more than 15 atmospheric pressure. The present invention has the advantages of compact structure, small size, convenient carrying, and convenient assembly and disassembly.

Description

Multipurpose pump for aeration and liquid suction

The present invention relates to a kind ofly be used to inflate or the multi-functional mechanical pump of drawing liquid.

In the prior art, be used to inflate, the mechanical pump of drawing liquid, generally form by several parts such as pump seat, pump barrel, piston and piston rods.The upper and lower motion of this pump piston once is two strokes, only gas or liquid are produced a pressure, so utilization efficiency is low.Double-action pressure pump (the notification number: CN2069491U) take the piston of pressure pump is divided into of Patent Office of the People's Republic of China's bulletin on January 16th, 91, two-layer down, two interlayers have a piston ring groove, offer measures such as several ventilations (liquid) aperture in the lower floor of piston, make on the piston, two strokes next time all produce pressure to gas or liquid, to improve the using effect of pressure pump, but the up-stroke of piston of this pump and down stroke are to not of uniform size the causing of pressure of gas or liquid generation, be easy to generate impact force, using scope is placed restrictions on, and especially is unsuitable for the occasion of the gas or the liquid of big flow.

The purpose of this invention is to provide the upper and lower stroke of a kind of piston and all can inflate or drawing liquid, be applicable to the high-efficiency multi-use pump of big flow gas or liquid occasion.

The present invention is by formations such as pump seat, the pump housing, piston, piston rod, air inlet (liquid) mouth, (liquid) mouths of giving vent to anger, its main technical schemes is: piston is formed by fixedly connecting by inner carrier and outer piston, inner carrier can be threaded with outer piston, and also can cast becomes one.The inner carrier middle part is provided with annular groove, and being placed with in the groove can upper and lower mobile seal element.Inner carrier has through hole in direction of piston travel, and when inner carrier was descending, seal element did not exert an influence to this through hole, and the gas of inner casing cavity of resorption or liquid enter the epicoele of inner casing through the through hole of inner carrier.When inner carrier was up, seal element was blocked through hole, and the epicoele of inner casing and cavity of resorption are isolated.The middle part of pump seat is provided with hollow pillar canal, and hollow pillar canal top has the hole and communicates with the inner casing epicoele, and one-way valve is housed, and only allows gas (liquid) body of inner casing epicoele to enter the cavity of hollow pillar canal.Inner carrier and seal element thereof are enclosed within the outside of hollow pillar canal.The lower end of hollow pillar canal has the hole and gives vent to anger (liquid) chamber and communicates, and fixedlys connected with interior cylinder cap in its upper end.The height of hollow pillar canal equals the stroke of piston.The outer shell bottom has two holes at least, and one of them hole is communicated with air inlet (liquid) mouth, and one-way valve is housed in the hole, only allows gas (liquid) to enter in the cylinder from air inlet (liquid) mouth.Another hole communicates with (liquid) chamber of giving vent to anger, and one-way valve also is housed in the hole, only allows gas (liquid) to flow into (liquid) chamber of giving vent to anger.The work opening direction of these two one-way valves is opposite, guarantees an one-way valve unlatching, another closed check valve.The bottom of inner casing has the duct and communicates with air inlet (liquid) mouth.

For increasing sealability, improve the inflation or the drawing liquid pressure of pump, the press table of outer piston and interior cylinder cap and inner carrier top board all have the hole, when the pressure in the cylinder increased, by these holes, pressure directly acted on seal element, make it press to casing wall, to improve its sealability.The groove at inner carrier middle part is preferably inverted cone, and the shape of seal element matches with it, the sensitivity that helps improving the seal element conducting like this or block the inner carrier through hole.Interior pump seat and outer pump seat, hollow pillar canal and interior pump seat all can be fixed as one respectively, but for ease of installing, they preferably adopt and are threaded.When should guaranteeing piston to top dead center, the inside wall height of interior pump seat still contacts, so that inner casing and outer shell are isolated with inside and outside piston.One-way valve is equipped with spring, exports the pressure that gas (liquid) is pressed by the elastic force may command of adjusting spring.

Accompanying drawing is a structural representation of the present invention.

Below in conjunction with accompanying drawing the present invention is further narrated.

Outer pump seat 1 is threaded with interior pump seat 41.Interior pump seat 41 has two holes, and one-way valve 4 is equipped with in one of them hole, Returnning spring 5 and plug screw 6.Can adjust the elastic force of spring 5 by plug screw 6.There are one-way valve 26 and Returnning spring 25 in another hole, and turn threaded bushing 27 can change the elastic force of spring 25.The interior pump seat 41 middle parts hollow pillar canal 21 that is threaded.Hollow pillar canal 21 upper ends are fixed with interior cylinder cap 15, and interior cylinder cap 15 is provided with seal ring 9.Hollow pillar canal 21 tops have the hole near interior cylinder cap place.One-way valve 19 and Returnning spring 18 are housed in the upper end portion of hollow pillar canal, and one-way valve 19 cooperates with this hole.Unclamp the screw 10 that inner casing covers, shed end cap, can change spring 18 or one-way valve 19 easily.Outer piston 8 is taked to be threaded with inner carrier 22.Inner carrier 22 middle parts have the inverted cone groove, and through hole 43 passes this groove, are placed with seal ring 23 in the groove, and the size of seal ring 23 makes it and can move up and down in groove than the undersized of groove.Inner carrier 22 is enclosed within the hollow pillar canal outside.The pump housing 16 is fixedlyed connected with outer pump seat 1.The pump housing 16 constitutes air storage (liquid) chamber with sleeve pipe 17.Sleeve 17 is threaded with the interior pump seat 41 and the pump housing 16.Sleeve 17 and interior pump seat inwall 20 constitute outer shell 30 together, and interior pump seat inwall 20 constitutes inner casing 32 with hollow pillar canal 21.Piston is connected with piston rod 37 by bolt 14.For preventing that gas (liquid) from leaking, each joint is equipped with

Sealing

2,3,11,24,28,42.

When piston rod drove descent of piston, the outer shell volume reduced, and pressure increases, and one-way valve 26 is opened, and the gas (liquid) in the outer shell 30 flows into air storage (liquid) chamber 29, discharged from exporting 35.Simultaneously, inner carrier conical seal ring 23 up moves under the friction of hollow pillar canal 21, makes through hole 43 conductings, and gas (liquid) flows into inner casing cavity of resorption 32 and enters inner casing epicoele 33 by hole 43 by hole 36 from import 34.When piston stroking upward, the outer shell volume increases, and gas (liquid) pressure constantly reduces, and when being reduced to certain value, one-way valve 26 resets.Gas (liquid) overcomes the spring force of one-way valve 4, flows in the outer shell 30, for next stroke exhaust (liquid) is prepared from import 34.On the other hand, up along with piston, inner carrier conical seal ring 23 moves down under the friction of hollow pillar canal 21 and blocks through hole 43, gas (liquid) pressure of inner casing epicoele 33 is constantly risen, last open check valve 19, gas (liquid) in the inner casing epicoele 33 is gone into air storage (liquid) chamber 29 by the inner chamber 31 of hollow pillar canal and the orifice flow of its lower end, and from (liquid) mouthful 35 discharges of giving vent to anger, for improving sealability, at the outer piston press table, the inner carrier top board, interior cylinder cap press table has hole 38,39,40, the gas of outer shell 30 and inner casing epicoele 33 (liquid) is pressed by these holes, acts on seal ring 12 respectively, 7,9, make them be close to casing wall.Pump body top cover 13 is threaded with the pump housing 16.

No matter the present invention's piston is up stroke or down stroke, all there are gas or liquid to discharge, thereby improve the working efficiency of pump greatly, the pressure of exhaust (liquid) can reach 15 more than the barometric pressure.The present invention also have compact structure, volume little, be easy to carry, install and remove characteristics such as convenient.Power can adopt manpower or electric power etc., is widely used in inflating, bleeds, occasion such as drawing liquid, liquid feeding, accomplishes that a pump uses more.

Claims

1, a kind of multipurpose pump for aeration and liquid suction of being made up of outer pump seat (1), interior pump seat (41), the pump housing (16), piston, piston rod (37), air inlet (liquid) mouthful (34) and (liquid) mouthful (35) of giving vent to anger is characterized in that:

A. piston is formed by fixedly connecting by inner carrier (22) and outer piston (8), and inner carrier (22) middle part has annular groove, is placed with seal element moving up and down (23) in the groove, and inner carrier (22) has the through hole (43) that passes annular groove in stroke directions;

B. interior pump seat (41) middle part is provided with hollow pillar canal (21), fixedly connected with interior cylinder cap (15) in its upper end, the lower end has the hole and gives vent to anger (liquid) chamber (29) and communicates, hollow pillar canal (21) top has the Kong Yuqi inner chamber and is communicated with, and be provided with one-way valve (19), inner carrier (22) and seal element (23) thereof are enclosed within the outside of hollow pillar canal, and sleeve (17) is threaded with the interior pump seat (41) and the pump housing (16);

C. with have hole (36) on the pump seat (41) in inner casing (36) is corresponding and be communicated with air inlet (liquid) mouth, at least have two holes on the pump seat (41) with outer shell (30) in corresponding, one of them hole is communicated with air inlet (liquid) mouthful (34), and one-way valve (4) is housed, another hole is communicated with (liquid) chamber (29) of giving vent to anger and one-way valve (26) is housed, and the work opening direction of one-way valve (4) is opposite with the work opening direction of one-way valve (26).

2, multipurposepump according to claim 1 is characterized in that the groove at inner carrier (22) middle part is a turbination, and the shape of seal element (23) is kissing with it.

3, multipurposepump according to claim 1 and 2 is characterized in that interior pump seat (41) and outer pump seat (1), and hollow pillar canal (21) is with interior pump seat (41) and is threaded.

4, multipurposepump according to claim 1 and 2, the height of pump seat inwall (20) should guarantee that piston to top dead center still contacts with inner carrier (22), outer piston (8), so that inner casing (32) and outer shell (30) are isolated.

5, multipurposepump according to claim 1 and 2 is characterized in that one-way valve (4) is provided with the threaded bushing (27) that the plug screw (6) of adjustable springs (5) elastic force, one-way valve (26) are provided with adjustable springs (25) elastic force.