CN113202718A - Flexible cavity resonance piezoelectric pump for industrial lubrication - Google Patents

Flexible cavity resonance piezoelectric pump for industrial lubrication Download PDF

Info

Publication number
CN113202718A
CN113202718A CN202110487972.8A CN202110487972A CN113202718A CN 113202718 A CN113202718 A CN 113202718A CN 202110487972 A CN202110487972 A CN 202110487972A CN 113202718 A CN113202718 A CN 113202718A
Authority
CN
China
Prior art keywords
cavity
connecting joint
pump
piezoelectric
piezoelectric vibrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110487972.8A
Other languages
Chinese (zh)
Inventor
何丽鹏
侯轶
胡殿彬
杜名瑞
黄永新
方相浩
王晨升
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun University of Technology
Original Assignee
Changchun University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun University of Technology filed Critical Changchun University of Technology
Priority to CN202110487972.8A priority Critical patent/CN113202718A/en
Publication of CN113202718A publication Critical patent/CN113202718A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/003Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22Arrangements for enabling ready assembly or disassembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N13/00Lubricating-pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N13/00Lubricating-pumps
    • F16N13/22Lubricating-pumps with distributing equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention discloses a flexible cavity resonance piezoelectric pump for industrial lubrication, which comprises a cavity, a drive, a piezoelectric vibrator, a pressing sheet, a connecting joint, an outlet, an inlet, a conical one-way valve and the like. The cavity is in a flexible tubular shape, the connecting joint is made of stainless steel, and a valve opening end of the connecting joint, a cavity end of the connecting joint and a hexagon socket head screw hole of the connecting joint are formed in the connecting joint. In the invention, the pump cavity, the flow pipe, the resonance device and other parts optimize the transportation of high-viscosity media, and are suitable for the transportation of lubricating oil for industrial use and the lubrication of large-scale machinery. The two groups of piezoelectric vibrators work independently to adjust the working mode of the pump. The size of the whole device can be adjusted by the size of the piezoelectric vibrator, the relative assembly positions of the piezoelectric vibrator, the pressing sheet and the connecting joint, and meanwhile, the size of the cavity can also be flexibly adjusted, so that the whole device is convenient to mount and arrange. Meanwhile, the connecting joint is used as a part of a vibration system to amplify the amplitude of the piezoelectric vibrator and increase the volume variation of the cavity.

Description

Flexible cavity resonance piezoelectric pump for industrial lubrication
Technical Field
The invention relates to a flexible cavity resonance piezoelectric pump for industrial lubrication, belonging to the field of fluid machinery.
Background
The existing lubricating pump has large volume and the conveying precision of lubricating oil needs to be further improved, and simultaneously, the problems of lubricating oil waste, environmental pollution and the like are brought. The piezoelectric pump has the advantages of small volume, no electromagnetic interference and the like, and is attracted by people in recent years, and meanwhile, the piezoelectric pump is mostly applied to micro-flow conveying of a micro-volume pump and is not applied to the field of high-viscosity medium precision conveying of industrial lubrication and the like.
Disclosure of Invention
The invention provides a piezoelectric pump which can be flexibly arranged and has high output flow aiming at the problems of the conventional piezoelectric pump.
The technical scheme adopted by the invention is as follows: a flexible cavity resonance piezoelectric pump for industrial lubrication is composed of a cavity (1), a driving frame (2), a piezoelectric vibrator (3), a pressing sheet (4), a connecting joint (5), an outlet (6), an inner hexagonal cylindrical head screw (7), an inlet (8) and a conical one-way valve (9);
the cavity (1) is in a flexible pipe shape, the driving frame (2) is provided with a driving frame inner hexagonal cylinder head screw hole (2-1), the piezoelectric vibrator (3) is a rectangular twin-wafer piezoelectric vibrator, the pressing sheet (4) is provided with a pressing sheet inner hexagonal cylinder head screw hole (4-1), the connecting joint (5) is made of stainless steel and is provided with a connecting joint valve opening end (5-1), a connecting joint inner hexagonal cylinder head screw hole (5-2) and a connecting joint cavity end (5-3), the connecting joint valve opening end (5-1) is provided with a groove for mounting a conical one-way valve (9), the outlet (6) and the inlet (8) are made of stainless steel, the cavity (1) is bonded with the driving frame (2), the driving frame (2) and the pressing sheet (4) are matched by an inner hexagonal cylinder head screw (7) through the driving frame inner hexagonal cylinder head screw hole (2-1) and the pressing sheet inner hexagonal cylinder head screw hole (4-1), the driving frame (2) is fixed at the center of the piezoelectric vibrator (3), two ends of the piezoelectric vibrator (3) are matched with the pressing piece inner hexagonal cylinder head screw hole (4-1) and the connecting piece inner hexagonal cylinder head screw hole (5-2) through an inner hexagonal cylinder head screw (7) to fix the piezoelectric vibrator (3) on the connecting piece (5), the connecting piece cavity end (5-3) of the connecting piece (5) is bonded and sealed with the cavity (1), a conical one-way valve (9) is placed in a groove of the connecting piece valve end (5-1) of the connecting piece (5), and then the conical one-way valve is welded and sealed with the outlet (6) and the inlet (8), so that the purpose of assembling the whole pump is achieved;
as a further improvement of the technical scheme, the piezoelectric pump can pump lubricating oil with higher viscosity due to the mutual matching of the pump cavity, the flow pipe, the resonance device and the one-way valve, replaces the problem that the prior common lubricating oil pump has large volume and needs to be improved in pumping precision in partial occasions, realizes high-precision lubricating oil delivery on the premise of reducing the volume of the pump, saves resources and protects the environment;
as a further improvement of the technical scheme, the piezoelectric vibrators (3) are two groups of piezoelectric vibrators which are respectively connected with independent power supplies, and the vibration phase difference of the two groups of piezoelectric vibrators can be adjusted by adjusting the output waveforms of the two groups of independent power supplies, so that the vibration modes of the two groups of piezoelectric vibrators can be realized from synchronous vibration to completely asynchronous vibration, and the working mode of the pump is adjusted until the working mode with the maximum output flow and the maximum output pressure is adjusted;
as a further improvement of the technical scheme, the cavity (1) is in a flexible tubular shape, the driving frame (2) is bonded with the cavity (1), the vibration of the piezoelectric vibrator (3) is transmitted to the driving frame (2) through the pressing sheet (4) and the hexagon socket head cap screw (7) to drive the volume of the cavity (1) to change, and fluid flows into and out of the cavity (1) through the conical one-way valve (9) by the pressure difference between the inside and the outside of the pump;
as a further improvement of the technical scheme, the distance between the two connecting joints (5) is adjusted by the size of the piezoelectric vibrator (3) and the adjustment of the assembling positions of the piezoelectric vibrator (3), the pressing sheet (4) and the connecting joints (5), the length of the cavity (1) is not limited by the distance between the two connecting joints (5), the size of the device can be adjusted according to specific use scenes and requirements, and the installation and the arrangement are convenient;
as a further improvement of the technical scheme, the dead weight of the connecting joint (5) made of stainless steel materials and the rigidity of the piezoelectric vibrator (3) overcome the inertia generated by the vibration of the piezoelectric vibrator (3) to keep the rigidity of the whole device, and meanwhile, the connecting joint (5) is used as a mass block in the whole spring-damping-mass block resonance system to amplify the amplitude of the piezoelectric vibrator (3) and increase the volume change of the cavity (1).
The invention has the beneficial effects that:
the piezoelectric pump is used for conveying high-concentration media, so that the volume of the lubricating pump is reduced, and the lubricating oil is accurately conveyed;
the invention enables the vibration of the piezoelectric vibrator to act on the flexible cavity to drive the flexible cavity to deform, so that the output flow is improved;
the length of the flexible cavity can be flexibly adjusted through the length of the piezoelectric vibrator and the relative position of the connection joint and the piezoelectric vibrator, and the length of the flexible cavity can also be flexibly adjusted, so that the whole device is convenient to mount and arrange;
the connecting joint of the invention is simultaneously used as a mass block in a vibration system, and can effectively improve the output flow.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 shows an exploded view of the present invention.
Figure 3 shows a cross-sectional view of the present invention.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. 1 to 3, in an embodiment of the present invention, the specific structure includes:
a flexible cavity resonance piezoelectric pump is composed of a cavity (1), a driving frame (2), a piezoelectric vibrator (3), a pressing sheet (4), a connecting joint (5), an outlet (6), an inner hexagonal socket head cap screw (7), an inlet (8) and a conical one-way valve (9); the cavity (1) is in a flexible pipe shape, the driving frame (2) is provided with a driving frame inner hexagonal cylinder head screw hole (2-1), the piezoelectric vibrator (3) is a rectangular twin-wafer piezoelectric vibrator, the pressing sheet (4) is provided with a pressing sheet inner hexagonal cylinder head screw hole (4-1), the connecting joint (5) is made of stainless steel and is provided with a connecting joint valve opening end (5-1), a connecting joint inner hexagonal cylinder head screw hole (5-2) and a connecting joint cavity end (5-3), the connecting joint valve opening end (5-1) is provided with a groove for mounting a conical one-way valve (9), the outlet (6) and the inlet (8) are made of stainless steel, the cavity (1) is bonded with the driving frame (2), the driving frame (2) and the pressing sheet (4) are matched by an inner hexagonal cylinder head screw (7) through the driving frame inner hexagonal cylinder head screw hole (2-1) and the pressing sheet inner hexagonal cylinder head screw hole (4-1), the driving frame (2) is fixed at the center of the piezoelectric vibrator (3), two ends of the piezoelectric vibrator (3) are matched with the pressing piece inner hexagonal cylinder head screw hole (4-1) and the connecting piece inner hexagonal cylinder head screw hole (5-2) through an inner hexagonal cylinder head screw (7) to fix the piezoelectric vibrator (3) on the connecting piece (5), the connecting piece cavity end (5-3) of the connecting piece (5) is bonded and sealed with the cavity (1), a conical one-way valve (9) is placed in a groove of the connecting piece valve end (5-1) of the connecting piece (5), and then the conical one-way valve is welded and sealed with the outlet (6) and the inlet (8), so that the purpose of assembling the whole pump is achieved;
as a further improvement of the technical scheme, the piezoelectric pump can pump lubricating oil with higher viscosity due to the mutual matching of the pump cavity, the flow pipe, the resonance device and the one-way valve, replaces the problem that the prior common lubricating oil pump has large volume and needs to be improved in pumping precision in partial occasions, realizes high-precision lubricating oil delivery on the premise of reducing the volume of the pump, saves resources and protects the environment;
as a further improvement of the technical scheme, the piezoelectric vibrators (3) are two groups of piezoelectric vibrators which are respectively connected with independent power supplies, and the vibration phase difference of the two groups of piezoelectric vibrators can be adjusted by adjusting the output waveforms of the two groups of independent power supplies, so that the vibration modes of the two groups of piezoelectric vibrators can be realized from synchronous vibration to completely asynchronous vibration, and the working mode of the pump is adjusted until the working mode with the maximum output flow and the maximum output pressure is adjusted;
as a further improvement of the technical scheme, the cavity (1) is in a flexible tubular shape, the driving frame (2) is bonded with the cavity (1), the vibration of the piezoelectric vibrator (3) is transmitted to the driving frame (2) through the pressing sheet (4) and the hexagon socket head cap screw (7) to drive the volume of the cavity (1) to change, and fluid flows into and out of the cavity (1) through the conical one-way valve (9) by the pressure difference between the inside and the outside of the pump;
as a further improvement of the technical scheme, the distance between the two connecting joints (5) is adjusted by the size of the piezoelectric vibrator (3) and the adjustment of the assembling positions of the piezoelectric vibrator (3), the pressing sheet (4) and the connecting joints (5), the length of the cavity (1) is not limited by the distance between the two connecting joints (5), the size of the device can be adjusted according to specific use scenes and requirements, and the installation and the arrangement are convenient;
as a further improvement of the technical scheme, the dead weight of the connecting joint (5) made of stainless steel materials and the rigidity of the piezoelectric vibrator (3) overcome the inertia generated by the vibration of the piezoelectric vibrator (3) to keep the rigidity of the whole device, and meanwhile, the connecting joint (5) is used as a mass block in the whole spring-damping-mass block resonance system to amplify the amplitude of the piezoelectric vibrator (3) and increase the volume change of the cavity (1).
The working process of the invention is divided into a first working process and a second working process:
the first working process comprises the following steps: applying an alternating current signal to the piezoelectric vibrator (3), wherein the piezoelectric vibrator (3) drives the driving frame (2) to move in the radial direction of the cavity (1) and in the direction away from the cavity (1), the volume of the cavity (1) is increased, negative pressure is formed in the pump cavity, fluid at the inlet (8) is filled into the pump cavity along the direction of the conical one-way valve (9) at the inlet (8), the conical one-way valve (9) at the outlet (6) is closed, and the fluid flows into the device;
the second working process: the piezoelectric vibrator (3) drives the driving frame (2) to move in the radial direction of the cavity (1) in the cavity (1), the volume of the cavity (1) is reduced, negative pressure is formed in the pump cavity, fluid at the cavity (1) flows out of the pump cavity along the direction of the conical one-way valve (9) at the outlet (6), the conical one-way valve (9) at the inlet (8) is closed, and the fluid flows out of the device and is circulated through the two working processes, so that the continuous output of the liquid is realized.
The principles and embodiments of the present invention have been described herein using specific examples, which are intended to facilitate an understanding of the principles and core concepts of the invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A flexible cavity resonance piezoelectric pump for industrial lubrication is composed of a cavity (1), a driving frame (2), a piezoelectric vibrator (3), a pressing sheet (4), a connecting joint (5), an outlet (6), an inner hexagonal cylindrical head screw (7), an inlet (8) and a conical one-way valve (9); the cavity (1) is in a flexible pipe shape, the driving frame (2) is provided with a driving frame inner hexagonal cylinder head screw hole (2-1), the piezoelectric vibrator (3) is a rectangular twin-wafer piezoelectric vibrator, the pressing sheet (4) is provided with a pressing sheet inner hexagonal cylinder head screw hole (4-1), the connecting joint (5) is made of stainless steel and is provided with a connecting joint valve opening end (5-1), a connecting joint inner hexagonal cylinder head screw hole (5-2) and a connecting joint cavity end (5-3), the connecting joint valve opening end (5-1) is provided with a groove for mounting a conical one-way valve (9), the outlet (6) and the inlet (8) are made of stainless steel, the cavity (1) is bonded with the driving frame (2), the driving frame (2) and the pressing sheet (4) are matched by an inner hexagonal cylinder head screw (7) through the driving frame inner hexagonal cylinder head screw hole (2-1) and the pressing sheet inner hexagonal cylinder head screw hole (4-1), the driving frame (2) is fixed at the center of the piezoelectric vibrator (3), two ends of the piezoelectric vibrator (3) are matched with the pressing piece inner hexagonal cylinder head screw hole (4-1) and the connecting piece inner hexagonal cylinder head screw hole (5-2) through the pressing piece (4) and the connecting joint (5) by using the inner hexagonal cylinder head screw (7), the piezoelectric vibrator (3) is fixed on the connecting joint (5), the connecting joint cavity end (5-3) of the connecting joint (5) is bonded and sealed with the cavity (1), the conical one-way valve (9) is placed in a groove of the connecting joint valve end (5-1) of the connecting joint (5), and then the conical one-way valve is welded and sealed with the outlet (6) and the inlet (8), so that the purpose of assembling the whole pump is achieved.
2. A flexible cavity resonant piezoelectric pump for industrial lubrication according to claim 1, wherein: the piezoelectric pump can pump lubricating oil with higher viscosity due to the mutual matching of the pump cavity, the flow pipe, the resonance device and the one-way valve, replaces the problem that the prior common lubricating oil pump has large volume and needs to be improved in pumping precision in part occasions, realizes high-precision lubricating oil delivery on the premise of reducing the volume of the pump, saves resources and protects the environment.
3. A flexible cavity resonant piezoelectric pump for industrial lubrication according to claim 1, wherein: the piezoelectric vibrators (3) are two groups of piezoelectric vibrators which are respectively connected with the independent power supplies, and the vibration phase difference of the two groups of piezoelectric vibrators can be adjusted by adjusting the output waveforms of the two groups of independent power supplies, so that the vibration modes of the two groups of piezoelectric vibrators can be realized from synchronous vibration to completely asynchronous vibration, and the working mode of the pump is adjusted until the working mode with the maximum output flow and the maximum output pressure is adjusted.
4. A flexible cavity resonant piezoelectric pump for industrial lubrication according to claim 1, wherein: the cavity (1) is in a flexible tubular shape, the driving frame (2) is bonded with the cavity (1), the vibration of the piezoelectric vibrator (3) is transmitted to the driving frame (2) through the pressing sheet (4) and the hexagon socket head cap screw (7) to drive the cavity (1) to change in volume, and fluid flows into and out of the cavity (1) through the conical one-way valve (9) due to the pressure difference between the inside and the outside of the pump.
5. A flexible cavity resonant piezoelectric pump for industrial lubrication according to claim 1, wherein: the distance between the two connecting joints (5) is adjusted by the size of the piezoelectric vibrator (3) and by adjusting the assembling positions of the piezoelectric vibrator (3), the pressing sheet (4) and the connecting joints (5), the length of the cavity (1) is not limited by the distance between the two connecting joints (5), the size of the device can be adjusted according to specific use scenes and requirements, and the installation and the arrangement are convenient.
6. A flexible cavity resonant piezoelectric pump for industrial lubrication according to claim 1, wherein: the dead weight of the connecting joint (5) made of stainless steel materials and the rigidity of the piezoelectric vibrator (3) overcome the inertia generated by the vibration of the piezoelectric vibrator (3), the rigidity of the whole device is kept, meanwhile, the connecting joint (5) is used as a mass block in the whole spring-damping-mass block resonance system to amplify the amplitude of the piezoelectric vibrator (3), and the volume change of the cavity (1) is increased.
CN202110487972.8A 2021-05-06 2021-05-06 Flexible cavity resonance piezoelectric pump for industrial lubrication Withdrawn CN113202718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110487972.8A CN113202718A (en) 2021-05-06 2021-05-06 Flexible cavity resonance piezoelectric pump for industrial lubrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110487972.8A CN113202718A (en) 2021-05-06 2021-05-06 Flexible cavity resonance piezoelectric pump for industrial lubrication

Publications (1)

Publication Number Publication Date
CN113202718A true CN113202718A (en) 2021-08-03

Family

ID=77029847

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110487972.8A Withdrawn CN113202718A (en) 2021-05-06 2021-05-06 Flexible cavity resonance piezoelectric pump for industrial lubrication

Country Status (1)

Country Link
CN (1) CN113202718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123945A (en) * 2021-04-26 2021-07-16 长春工业大学 Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123945A (en) * 2021-04-26 2021-07-16 长春工业大学 Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation

Similar Documents

Publication Publication Date Title
CN110425105A (en) A kind of linear motor plunger pump
CN110454352A (en) A kind of straight line motor drive type plunger pump
CN204436756U (en) A kind of mode of resonance piezoelectric pump based on inertial drive
CN103671462B (en) Based on the piezoelectricity valve free pump sucker of parallel connection compliant mechanism
CN113202718A (en) Flexible cavity resonance piezoelectric pump for industrial lubrication
CN106950690A (en) A kind of primary mirror of astronomical telescope hydraulic support device
WO2022135069A1 (en) Ultrasonic stepping superfine single droplet generator
CN112283081A (en) Piezoelectric resonance pump with telescopic cavity
CN111878371B (en) Spring type piezoelectric air pump
CN104454775B (en) Two ends prefastening piezoelectric pile causes the low frictional behavior cylinder of cylinder barrel bending vibration
CN111779657B (en) Piezoelectric driving type resonance air pump
CN112502965B (en) Piezoelectric screw pump for precise liquid transmission
CN209892418U (en) Axial-flow type miniature piezoelectric gas compressor
CN101505115B (en) Liquid medium longitudinal vibration non-contact type ultrasonic motor
CN113123945A (en) Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation
CN108540010B (en) A kind of pipe robot and its motivational techniques based on piezoelectric vibrator
CN112177919B (en) Semi-flexible telescopic integrated valve piezoelectric pump
CN117703868B (en) Combined hydraulic cylinder convenient for power output angle adjustment
CN204271942U (en) A kind of bi-directional drive linear ultrasonic motor
CN113123946A (en) A have valve resonance piezoelectric pump for agricultural sprinkling irrigation
CN114382683B (en) Double-resonance piezoelectric pump
CN204271933U (en) A kind of single-electrical signal excitation ultrasonic elliptical vibratory many oscillators device for transporting objects
CN104362895B (en) A kind of single excitation linear ultrasonic motor
CN204271931U (en) A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects
CN204271939U (en) Single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210803

WW01 Invention patent application withdrawn after publication