CN109882379A - A kind of high viscosity self-acting lubricator of piezoelectric stack driving - Google Patents

Abstract

The invention belongs to mechanical equipment lubricating arrangement fields, and in particular to a kind of high viscosity self-acting lubricator of piezoelectric stack driving.Device is disposed with liquid reserve tank, shell and chassis along fluid direction of motion；The liquid reserve tank is internally provided with liquid capsule, has liquid medium in liquid capsule；Pump cover, the pump housing and grease tank body are installed in the enclosure interior；Liquid reserve tank is mounted on pump cover；Piezoelectric stack is installed inside the pump cover；Piezoelectric stack pushes piston to carry out liquid medium conveying；Pressure is transmitted to power piston by liquid medium, and power piston pushes tank body piston to carry out grease push again；The bearing area of power piston is greater than tank body piston.Advantage and feature: Lipid use rate is high, easy to maintain, while being driven using piezoelectric stack, and discharge pressure is big, is suitble to high viscosity grease oiling.

Description

A kind of high viscosity self-acting lubricator of piezoelectric stack driving

Technical field

The invention belongs to mechanical equipment lubricating arrangement fields, and in particular to a kind of high viscosity of piezoelectric stack driving is infused automatically Oily device.

Background technique

Domestic and international maintenance of equipment it was verified that insufficient lubrication is one of the main reason for machinery equipment breaks down.Profit The sliding bad reduction that can directly result in equipment fault or cause components precision first, and then developing is machinery equipment failure. Compared to the manual application of lubricant, accuracy of the self-lubricate in equipment lubrication oil mass, the accuracy and quality of lubrication oil of lubrication interval Protection etc. there are clear superiorities.Therefore, lasting pass of the self-lubricate of mechanical equipment by researchers at home and abroad Note, if Chinese patent CN108224046A proposes a kind of intelligently realizing explosion-proof self-acting lubricator, realizes without human intervention, Neng Gouding When quantitative grease-filling, make oil-using units it is round-the-clock obtain lubrication nursing；Chinese utility model CN204986340U proposes a kind of automatic Oil syringe pushes piston press grease to realize uninterrupted continuous lubrication, has simultaneously using the gas pressure that gas cell generates Compact, structure is simple, installs easy to operate advantage.But 1. existing self-acting lubricator, which has the disadvantage in that, directly to be passed through Pump chamber and valve convey grease, and grease, which can exist, to be remained, and in replacement process, need to carry out cleaning treatment, maintenance to runner and valve The problems such as difficulty is big, and disposable high there are use cost, and environmental pollution is big；2. passing through motor-driven self-acting lubricator Realize that automatic oiling relies primarily on motor and drives output lubricating grease, but due to the mechanical complexity of motor and its fit structure Limitation, volume is often larger and there are electromagnetic interference, be not easy to miniaturization with it is integrated；3. being generated by chemical method or pumping Gas and then the self-acting lubricator driven, in use, due to the compressible and high leakproofness requirement of gas, so controllably Property is poor, and output accuracy is not high.Disadvantages mentioned above seriously hinders development of the self-acting lubricator in mechanical equipment lubrication.

Summary of the invention

Existing self-acting lubricator there are aiming at the problem that, the present invention propose it is a kind of it is easy to maintain, driving part is reusable, Processing and fabricating is simple, use cost is low and the high viscosity self-acting lubricator with the driving of high-precision piezoelectric stack, hereinafter referred to as Self-acting lubricator.

The embodiment of the invention provides a kind of high viscosity self-acting lubricators of piezoelectric stack driving, using following technical side Case: liquid reserve tank, shell and chassis have been sequentially connected outside fluid direction of motion；The liquid reserve tank is internally provided with liquid capsule, Liquid medium is housed inside liquid capsule；The enclosure interior is sequentially installed with pump cover, the pump housing and grease tank body from left to right；It is described Pump cover is connected with liquid reserve tank by screw thread；Piezoelectric stack is installed at the pump cover center, piezoelectric stack left end is connect with pump cover, Piezoelectric stack right end is connect with jacking block；The jacking block is slidably matched with pump cover, guarantees that stablizing for piezoelectric stack extends and contract with this It is short；Diaphragm is installed between the pump cover and the pump housing；The pump body is provided with pump chamber and piston, and piston and pump chamber sliding are matched It closes；The piston is provided with the first sealing ring, guarantees the leakproofness of pump chamber with this；The jacking block, diaphragm and piston from a left side to Right successively connection with one heart；The pump chamber is provided with inlet valve and outlet valve；The liquid reserve tank, pump cover and pump body are provided with Intake channel, intake channel one end is connected to liquid capsule, the other end is divided into two branches, and a branch connect with inlet valve, another branch It is connect with shut-off valve；The pump body is provided with exit passageway, and exit passageway one end is connected to outlet valve, the other end is divided into two Branch, a branch communicate with power piston, and another branch connect with shut-off valve；The shut-off valve control intake channel and outlet are logical The on-off in road, when shut-off valve is closed, intake channel and exit passageway are disconnected, when shut-off valve is opened, intake channel and exit passageway Connection；The power piston is set to pump body, and one end is connected to exit passageway, the other end passes through buckle and tank body piston Connection, power piston and tank body piston carry out power transmission by the face contact of piston rod；The power piston and the pump housing slide Cooperation；The power piston periphery is provided with the second sealing ring, guarantees leakproofness with this；Grease is provided in the oil tank body Chamber, grease is intracavitary to be filled with grease；The tank body piston is slidably matched with grease chamber；Tank body piston periphery is provided with third Sealing ring guarantees the leakproofness of grease chamber with this；The bearing area of the power piston is greater than tank body piston；The grease tank body Inside chassis is provided with grease outlets；The grease outlets are connected to grease chamber.

When grease is used up, the tank body piston of grease tank body and inside carries out integral replacing, when disassembly, unloads low bottom-disc first And grease tank body, it is connected by a snap between internal tank body piston and power piston, solution can be realized after being buckled in light draw It detains and connects the two and disconnect；When reinstalling, shut-off valve is opened, squeezing power piston returns liquid medium in liquid capsule, Liquid capsule restores to the original state, and chassis and grease tank body after the installation is completed, shut-off valve are closed, oil syringe returns original state.

Working condition can be divided into original state, the first working condition and the second working condition, the specific work of the present embodiment Make process, be described below:

Original operating state (Fig. 1): piezoelectric stack does not apply driving voltage, and shut-off valve is in close state；

First working condition (Fig. 2): shut-off valve is closed, and applies forward voltage to piezoelectric stack, and piezoelectric stack starts to shrink, And jacking block, diaphragm and piston is driven to move downward, pump chamber increases, and Fluid pressure reduces, and inlet valve is opened, outlet valve closes It closes, liquid medium enters pump chamber through inlet valve in liquid capsule:

Second working condition (Fig. 3): when the alternating voltage for being applied to piezoelectric stack is reversed, piezoelectric stack starts to extend, and leads to Crossing jacking block drives diaphragm and piston to move right, and pump chamber reduces, and cavity fluid pressure increases, inlet valve closing, outlet valve It opens, liquid medium is flowed out through outlet valve in pump chamber, and the pressure of liquid medium, which constantly rises, squeezes power piston, drives tank body living Plug, which moves right, to be squeezed the intracavitary grease of grease and exports grease by grease outlets.

Under the driving of alternating voltage signal, the first and second working condition changes the company that grease in oil tank body can be achieved repeatedly Continuous output.Liquid medium squeezes the power piston for possessing larger bearing area simultaneously, and then pushes tank body piston, can obtain liquid Force amplification effect, the intracavitary grease of grease will possess bigger driving pressure, and grease is not easy to plug.

Characteristic and advantage of the invention is: 1, Lipid use rate is high, easy to maintain: using indirect mode of movement, grease is not By pump chamber, the case where being detained in pump chamber is not appeared in, grease can be fully utilized, while after grease is used up, match Shut-off valve is closed, (disposable) to grease tank body can integrally be replaced, easy to operate, user is easy to maintain；2, precision it is high, can Control property is good: the method that output quantitative grease can be recycled by one action realizes that the step-by-step movement of grease supplies, while passing through adjusting The movement rate of piezoelectric stack driving voltage and the controllable power piston of frequency is to adjust grease output quantity；3, output pressure It is big: to be driven by piezoelectric stack, single piezoelectric stack may produce up to the compression of 35MPa, while (dynamic using fluid power enlarged structure Power piston bearing area is greater than tank body piston) obtain high pressure output.

Detailed description of the invention

Fig. 1 is self-acting lubricator original operating state schematic sectional view in a kind of preferred embodiment of the present invention；

Fig. 2 is self-acting lubricator the first working condition schematic sectional view in a kind of preferred embodiment of the present invention；

Fig. 3 is self-acting lubricator the second working condition schematic sectional view in a kind of preferred embodiment of the present invention.

Icon: 1- liquid reserve tank；100- liquid capsule；2- shell；3- piezoelectric stack；4- jacking block；The first sealing ring of 5-；The outlet 6- Valve；7- power piston；70- buckle；The second sealing ring of 71-；8- grease tank body；80- tank body piston；81- third sealing ring；82- Grease chamber；The chassis 9-；90- grease outlets；10- shut-off valve；11- inlet valve；The 12- pump housing；120- pump chamber；121- exit passageway； 122- intake channel；13- piston；14- diaphragm；15- pump cover.

Specific embodiment

Clear, complete description is carried out to technical solution of the present invention below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ordinary skill people Member's every other embodiment obtained without making creative work, belongs to protection scope of the present invention.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integration connection；It can To be mechanical connection, it is also possible to be electrically connected；It can be and be directly connected to, can also be indirectly connected with, be can be by intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood in this hair with concrete condition Concrete meaning in bright.

Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.

Fig. 1, Fig. 2, Fig. 3 are please referred to, the present invention proposes a kind of high viscosity self-acting lubricator of piezoelectric stack driving, comprising: Liquid reserve tank 1, shell 2 and chassis 9 have been sequentially connected outside fluid direction of motion；The liquid reserve tank 1 is internally provided with liquid capsule 100, liquid medium is housed inside liquid capsule 100；Be sequentially installed with from left to right inside the shell 2 pump cover 15, the pump housing 12 and Grease tank body 8；The pump cover 15 is connected with liquid reserve tank 1 by screw thread；Piezoelectric stack 3 is installed at 15 center of pump cover, is pressed Electricity stacks 3 left ends and connect with pump cover 15, and 3 right end of piezoelectric stack is connect with jacking block 4；The jacking block 4 is slidably matched with pump cover 15, with This guarantees that stablizing for piezoelectric stack 3 extends and shorten；Diaphragm 14 is installed between the pump cover 15 and the pump housing 12；The pump housing 12 It is internally provided with pump chamber 120 and piston 13, piston 13 and pump chamber 120 are slidably matched；The piston 13 is provided with the first sealing ring 5, guarantee the leakproofness of pump chamber 120 with this；The successively connection with one heart from left to right of the jacking block 4, diaphragm 14 and piston 13；It is described Pump chamber 120 is provided with inlet valve 11 and outlet valve 6；The liquid reserve tank 1, pump cover 15 and the pump housing 12 are internally provided with intake channel 122,122 one end of intake channel is connected to liquid capsule 100, the other end is divided into two branches, and a branch connect with inlet valve 11, Ling Yifen Branch is connect with shut-off valve 10: the pump housing 12 is internally provided with exit passageway 121, and 121 one end of exit passageway and outlet valve 6 connect The logical, other end is divided into two branches, and a branch communicates with power piston 7, and another branch connect with shut-off valve 10；The shut-off valve 10 The on-off of intake channel 122 and exit passageway 121 is controlled, when shut-off valve 10 is closed, intake channel 122 and exit passageway 121 are disconnected It opens, when shut-off valve 10 is opened, intake channel 122 is connected to exit passageway 121；The power piston 7 is set to inside the pump housing 12 Downside, one end is connected to exit passageway 121, the other end is connect by buckle 70 with tank body piston 80, power piston 7 and tank body Piston 80 carries out power transmission by the face contact of piston rod；The power piston 7 is slidably matched with the pump housing 12；The power is living It fills in 7 peripheries and is provided with the second sealing ring 71, leakproofness is guaranteed with this；Grease chamber 82, grease chamber are provided in the grease tank body 8 Grease is filled in 82；The tank body piston 80 is slidably matched with grease chamber 82；80 periphery of tank body piston is provided with third Sealing ring 81 guarantees the leakproofness of grease chamber 82 with this；The bearing area of the power piston 7 is greater than tank body piston 80；It is described Grease tank body 8 and chassis 9 are internally provided with grease outlets 90；The grease outlets 90 are connected to grease chamber 82.

When grease is used up, the tank body piston 80 of grease tank body 8 and inside carries out integral replacing, when disassembly, unloads first Chassis 9 and grease tank body 8, by 70 connection of buckle between internal tank body piston 80 and power piston 7, buckle 70 is gently being drawn After can be realized unbutton and by the two connect disconnect；When reinstalling, shut-off valve 10 is opened, squeezing power piston 7 makes liquid Medium is returned in liquid capsule 100, and liquid capsule 100 restores to the original state, and after the installation is completed, shut-off valve 10 is closed for chassis 9 and grease tank body 8, Oil syringe returns original state.

Working condition can be divided into original state, the first working condition and the second working condition, the specific work of the present embodiment Make process, is described below；

Original operating state (Fig. 1): piezoelectric stack 3 does not apply driving voltage, and shut-off valve 10 is in close state；

First working condition (Fig. 2): shut-off valve 10 is closed, and applies forward voltage to piezoelectric stack 3, piezoelectric stack 3 starts It shrinks, and jacking block 4, diaphragm 14 and piston 13 is driven to move downward, 120 volume of pump chamber increases, and Fluid pressure reduces, inlet valve 11 It opens, the closing of outlet valve 6, liquid medium enters pump chamber 120 through inlet valve 11 in liquid capsule 100:

Second working condition (Fig. 3): when the alternating voltage for being applied to piezoelectric stack 3 is reversed, piezoelectric stack 3 starts to extend, Diaphragm 14 and piston 13 is driven to move right by jacking block 4,120 volume of pump chamber reduces, and cavity fluid pressure increases, inlet valve 11 It closes, the unlatching of outlet valve 6, liquid medium is flowed out through outlet valve 6 in pump chamber 120, and it is dynamic that the pressure of liquid medium constantly rises extruding Power piston 7 drives tank body piston 80 to move right and squeezes grease in grease chamber 82 and export grease by grease outlets 90.

Under the driving of alternating voltage signal, the first and second working condition changes the company that grease in grease tank body 8 can be achieved repeatedly Continuous output.Liquid medium squeezes the power piston 7 for possessing larger bearing area simultaneously, and then pushes tank body piston 80, can obtain Fluid power amplification effect is obtained, grease will possess bigger driving pressure in grease chamber 82, and grease is not easy to plug.

Claims (2)

1. a kind of high viscosity self-acting lubricator of piezoelectric stack driving, it is characterised in that: the successively phase outside fluid direction of motion It is connected with liquid reserve tank, shell and chassis；The liquid reserve tank is internally provided with liquid capsule, and liquid medium is housed inside liquid capsule；The shell Internal portion is sequentially installed with pump cover, the pump housing and grease tank body from left to right；The pump cover is connected with liquid reserve tank by screw thread；Institute It states and piezoelectric stack is installed at pump cover center, piezoelectric stack left end is connect with pump cover, right end and jacking block connect；The jacking block and pump Lid is slidably matched；Diaphragm is installed between the pump cover and the pump housing；The pump body is provided with pump chamber and piston, piston and pump Chamber is slidably matched；The piston is provided with the first sealing ring；The jacking block, diaphragm and piston successively connect with one heart from left to right It connects；The pump chamber is provided with inlet valve and outlet valve；The liquid reserve tank, pump cover and pump body are provided with intake channel, into One end of the channel is connected to mouth with liquid capsule, the other end is divided into two branches, and a branch connect with inlet valve, and another branch and shut-off valve connect It connects；The pump body is provided with exit passageway, and exit passageway one end is connected to outlet valve, the other end is divided into two branches, and one point Branch is communicated with power piston, and another branch connect with shut-off valve；The power piston is set to pump body, one end and outlet Channel connection, the other end are connect by buckle with tank body piston；The power piston is slidably matched with the pump housing；The power piston Periphery is provided with the second sealing ring, guarantees leakproofness with this；Grease chamber is provided in the oil tank body, grease is intracavitary to be filled with Grease；The tank body piston is slidably matched with grease chamber；Tank body piston periphery is provided with third sealing ring；The power is living The bearing area of plug is greater than tank body piston；The grease tank body and inside chassis are provided with grease outlets；The grease outlets with The connection of grease chamber.

2. according to claim 1 piezoelectric stack driving high viscosity self-acting lubricator, it is characterised in that: grease tank body and Internal tank body piston is replaced by buckling to disengage, between power piston and tank body piston by the face contact of piston rod into The transmission of row thrust.