CN1127851A

CN1127851A - Floating piston type liquid transporter

Info

Publication number: CN1127851A
Application number: CN 95100284
Authority: CN
Inventors: 江祖德
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 1995-01-28
Filing date: 1995-01-28
Publication date: 1996-07-31

Abstract

The float piston type liquid deliverer is composed of two coaxial cylinder bodies with different diameters, cylinder cover fixed to cylinder body tightly via pull rod and nut, and piston dividing cylinder body into piston-type hydraulic pump and piston-type hydraulic engine. When piston moves left to stop point, it touches with push rod to activate commutator system to reverse liquid flow, resulting in piston moving right. Said continuous reciprocating movement can deliver liquid. It features compact structure and high efficiency.

Description

Floating piston type liquid transporter

The invention belongs to fluid pressure energy recover, especially floating piston type liquid transporter, it utilizes liquid excess pressure can make motive force, promotes the floating piston in the cylinder, and piston opposite side fluid pressure is raise, and is transported to the using system of liquid.

So far, utilize the recoverable hydraulic machine of liquid excess pressure to have both at home and abroad: 1, jet pump, the occasion that can only be used to allow liquid-liquid or liquid-gas to mix, and also reuse efficiency is very low; 2, oil hydraulic motor, it requires medium pure, should not be used to have the burn into severe toxicity, mix sedimentary chemical petroleum medium; 3, hydraulic pressure turbine, it is not suitable for the less occasion of fluid flow, and reuse efficiency is also on the low side; 4, direct-acting type piston energy-recovering machine, the machine system complexity, structure is huge, and efficient is lower; 5, rotary piston energy-recovering machine, promptly the piston type energy of the 872 02038 X patent No.s reclaims machine, and its volume is little, and system is simple, has application prospect, but machine rotational speed is higher, and difficulty is bigger.

The present invention aims to provide a kind of floating piston type liquid transporter.

Elaborate below in conjunction with accompanying drawing.

Fig. 1 is a floating piston type liquid transporter working principle schematic representation.

Principal character of the present invention forms one by the cylinder body of two different-diameters The stage differential style cylinder body is equipped with a unsteady differential piston 5, minor diameter in the cylinder body Cylinder body 4, major diameter cylinder body 7 by

cylinder cap

3,6 and 10 by pull bar 1 and spiral shell Mother 2 is fixed in aggregates, and cylinder cap 10 is provided with inlet valve 11, row Go out valve 9 and push rod 8, dump valve 9 uses system 12 to be connected with liquid, inhales Enter valve 11 and dump valve 9 also can be made independent combination valve, directly and cylinder Import and export connection on the lid 10 is provided with push rod on the cylinder cap 3 equally and liquid advances Outlet, the import and export of liquid are communicated with main valve 20, and intermediate hsg 6 is provided with logical Road and check valve 21 are with vat body 7 spaces, the piston left side and normal pressure or inferior low Pressing system is communicated with, and differential piston 5 both ends of the surface are divided into piston with cylinder space Formula hydraulic pump and piston type hydraulic motor are because the liquid between the cylinder body of piston two ends Body pressure is done cyclically-varying under exchange system control, make piston along Boring mill The line direction is reciprocating, and minor diameter cylinder body and major diameter cylinder body all respectively can Become fluid motor or hydraulic pump, exchange system is by push rod 8, straight-bar framework 17, pilot valve 15 and main valve 20 form, and wherein pilot valve can be machine Moving valve or magnetic valve, main valve is hydraulic operated valve, both are cylindrical slide valve, earlier Pilot valve 15 comprises guide's spool 16, guide valve blocks 14 and fills out letter 13, Main valve comprises main valve plug 18, main valve body 19. Because the commutation of pressure fluid, Make piston reciprocates, reach the interior liquid of hydraulic pump and constantly suck supercharging side by side Go out to be input to the purpose that liquid uses system 12. Cylinder body can level or vertical Place, and can single-row or multiple row.

The operation principle of this conveyer is as follows: when piston during to the near stop of left movement, Run into push rod, be moved to the left thereby promote the straight-bar framework, drive pilot valve core Move to left, then the high pressure liquid body opening P on the pilot valve body communicate with A, from High-pressure system 22 liquid just flow to the left chamber of valve body of main valve through P, A, promote Valve core of main valve moves to right; Meanwhile, the liquid in the right chamber of valve body of main valve is through the guide B, O hole enter low-pressure system 23 on the valve body. At this moment, on the valve body of main valve High pressure liquid body opening P ' is communicated with hole A ', from the liquid warp of high-pressure system 22 P ', A ' hole enter in the fluid motor of left cylinder, promote to be in left stop The piston of position moves right, and meanwhile, sucks in the hydraulic pump of right cylinder body Valve cuts out, and fluid pressure raises, and through dump valve liquid is transported to liquid and uses System 12.

In like manner, when piston continues to move to nearly right stop to the right, run into push rod, thereby promoting the straight-bar framework moves right, the drive pilot valve core moves to right, so hole P on the pilot valve body, B and O, A is communicated with respectively, from high-pressure system liquid by hole P, B flows to the right chamber of main valve body, valve core of main valve is moved to left, at this moment, main valve body opening A ', O ' is communicated with, and expulsion valve cuts out in the oil hydraulic pump of the right cylinder of piston, suction valve is opened, and owing to the area of piston left end area less than the piston right-hand member, chamber, a vat body left side is in normal pressure or inferior low-pressure state, so liquid effects is in the power of the piston left surface power less than the piston right flank, piston is moved to the left, and like this, right cylinder sucks liquid from low service system, left side cylinder passes through A ' with liquid in the cylinder block body, O ' is expelled to low service system, when piston continues to move left to left stop, just done a to-and-fro motion, the fluid motor of left cylinder and the oil hydraulic pump of right cylinder have all been finished the one action circulation.

Because piston has been run into push rod again, and reversing mechanism is had an effect, said process restarts.So continuous circulation makes liquid ceaselessly be transported to using system.

The present invention can reclaim machinery with the fluid pressure of prior art and compare, and is characterized in simple in structure, and compactness is implemented easily, and the efficient height is widely applicable, easy to operate, safe and reliable.

Claims

1, a kind of floating piston type liquid transporter, it is characterized in that it has two cylinder bodies (4) of different cylinder diameters, (7) constitute the stage differential style cylinder body, the stage differential style piston (5) that is installed in the cylinder is separated into piston type hydraulic pumps and piston fluid motor, cylinder body is by cylinder cap (3), (10) and (6) fastening in aggregates by pull bar (1) and nut (2), the reversing mechanism of piston type hydraulic motor is by push rod (8), straight-bar framework (17), pilot valve (15), main valve (20) is formed, pilot valve (15) and main valve (20) are cylindrical slide valve, wherein pilot valve (15) is solenoid valve or motor valve, and main valve (20) is a hydraulic operated valve.

2, floating piston type liquid transporter according to claim 1, it is characterized in that said cylinder body can level or vertical place, and can single-row or multiple row.