CN105587610A - Paster sandwich type longitudinal and bending complex-excitation passive water jet propulsion unit and drive method thereof - Google Patents

Abstract

The invention discloses a patch sandwich longitudinal bending composite excitation passive water jet propulsion device and a driving method thereof to solve the problems of small driving force and low power density of the current piezoelectric water jet propulsion device. The invention includes stacks for valves, metal substrates for valves, end caps, supporting rubber rings, sealing rings, cavities, umbrella valves for valves, umbrella valves for pumps, fastening bolts, drive components for pumps, and enlarged diaphragms , clamping block, metal base plate for the pump, front end cover and fastening screws; the cavity has a water inlet of the valve chamber, a water inlet of the pump chamber and a funnel-shaped water outlet, the water inlet of the valve chamber and the water inlet of the pump chamber have a valve seat, and the water outlet Has a hydrophobic structure. Electric signals are applied to the valve stack and pump drive components to generate telescopic deformation and centrifugal force respectively, so that the volumes of the valve chamber and pump chamber change alternately to realize fluid suction and ejection, and the device is propelled under the reaction force of water spray. The invention has the advantages of large driving force and high power density, and has broad application prospects in the fields of micro-spraying, military detection and the like.

Description

Patch Sandwich Longitudinal Bending Compound Vibration Passive Water Jet Propulsion Device and Its Driving Method

technical field

The invention relates to a patch sandwich longitudinal bending composite excitation passive water jet propulsion device and a driving method thereof, belonging to the technical field of water jet propulsion.

Background technique

The water-jet propulsion device is a micro-propulsion device that uses the reaction force of the water jetted by the propulsion pump to generate propulsion, and then realizes the motion output. As the power source of the propulsion device, the pump plays an important role in the water jet propulsion technology. At present, the propulsion pumps used in the water jet propulsion device are mainly axial flow pumps, mixed flow pumps and centrifugal pumps. This kind of power pump has low power density, resistance Disadvantages such as poor interference ability and complex structure make it difficult for water jet propulsion technology to meet the application requirements in the fields of robots, small detection, and precision instruments. The piezoelectric pump developed in the 1970s is a typical micro-miniature driving device, which has the characteristics of easy miniaturization, fast dynamic response, and anti-electromagnetic interference. In recent years, the research on using the piezoelectric pump as the power source of the water jet propulsion device to realize the motion output has received extensive attention. Compared with traditional water-jet propulsion devices, because of its technical advantages such as high power density, simple and compact structure, and large driving force, it has broad application prospects in technical fields such as micro-injection, military detection, and underwater robots.

Chinese utility model patent "miniature water jet propulsion pump", the authorized announcement number is CN200989293Y, and the authorized announcement date is December 12, 2007. A miniature water jet propulsion pump is disclosed, which is mainly composed of a pump body, a pump cavity, and a piezoelectric vibrator. It consists of a piezoelectric vibrator as the driving element. The piezoelectric vibrator is supported by the surrounding elastic elements in the cavity formed between the pump body and the cover. The pump body is provided with an inlet flow channel and an outlet flow channel. The inlet flow channel corresponds to The axis of the valve cavity and the axis of the outlet flow channel are in the same plane and perpendicular to each other. The rubber stop valve is used as the inlet valve at the inlet. The outlet is the spout. There is no valve at the spout and it is always connected to the outside world. The inner cavity of the pump is an unclosed cavity; the Chinese utility model patent "Piezoelectric Water Spray Propulsion Device", the authorized announcement number is CN202574604U, and the authorized announcement date is May 07, 2012. The propulsion device, the upper cover is fixedly connected with the pump body, the piezoelectric vibrator is supported by the upper elastic rubber ring and the lower elastic rubber ring, and forms a pump cavity with the upper cover, and there is a sealing ring between the upper cover and the pump body. Water inlet 1 and water inlet 2 are provided, and a valve cavity is provided between the piezoelectric vibrator and the two water inlets, and umbrella-shaped rubber valve 1 and umbrella-shaped rubber valve 2 are fixedly connected to water inlet 1 and water inlet 2 respectively. There is a water outlet between the two water inlets, and the water outlet is directly connected with the outside world.

The piezoelectric water jet propulsion device of the above several implementation modes can realize the propulsion motion output of the device through the inhalation and ejection process of the fluid under the action of a certain excitation electric signal, but the piezoelectric water jet propulsion device of this implementation mode There are technical problems such as small driving force and low power density, which limit its application and development in technical fields such as micro-injection, military detection, and underwater robots.

Contents of the invention

In order to solve the technical problems of small driving force and low power density in the current piezoelectric water jet propulsion device, the present invention discloses a patch sandwich longitudinal bending composite excitation passive water jet propulsion device and a driving method thereof.

The technical solution adopted in the present invention is: the patch sandwich longitudinal bending composite excitation passive water spray propulsion device is composed of a valve stack, a valve metal substrate, an end cover, a supporting rubber ring, a sealing ring, a cavity, a valve It is composed of an umbrella valve, an umbrella valve for a pump, fastening bolts, a drive assembly for a pump, an enlarged diaphragm, a clamping block, a metal base plate for a pump, a front end cover and fastening screws. One end of the valve stack is glued to the metal substrate for the valve, and the other end is glued to the inner cavity wall of the end cover, and the current conducting wire of the valve stack passes through the wire hole on the end cover Lead out; the valve metal base plate is a metal elastic body structure, arranged on the inner stepped circular surface of the valve cavity, and fixedly installed between the end cover and the cavity through the support rubber ring; the level of the end cover The side is provided with an inner cavity structure, the inner cavity wall of the end cover is provided with a wire hole structure, the horizontal side of the end cover is also provided with a ring groove structure, and the horizontal side of the end cover is also provided with a sealing ring groove structure , the horizontal side of the end cover is also provided with four through hole structures, the vertical side of the end cover is provided with two internal thread hole structures, and the vertical side of the end cover is also provided with a sealing annular groove structure, the vertical side of the end cover is also provided with a semicircular through hole structure, the inner surface of the semicircular through hole is glued and sealed with one side of the cavity, and the end surface of the semicircular through hole is connected to the other side. The end face of the semicircular through hole of the end cover is glued and sealed. Both the supporting rubber ring and the sealing ring are elastic bodies with a ring structure. The cavity is provided with a valve cavity structure, the cavity is also provided with an inner stepped torus structure, the cavity is also provided with an annular groove structure, and the cavity is also provided with a sealing annular groove structure, the The cavity is also provided with a valve cavity water inlet structure, and the cavity is also provided with a pump cavity water inlet structure. The valve cavity water inlet and the pump cavity water inlet in the cavity are both provided with a valve seat structure. A funnel-shaped water outlet structure is provided, and the inner wall of the water outlet in the cavity is provided with a hydrophobic structure. The drive assembly for the pump includes a front matching rod, a energized electrode piece, an annular piezoelectric ceramic sheet, a rear matching rod, an insulating sleeve and a rectangular piezoelectric ceramic sheet; the front matching rod is a stepped cylindrical elastic body structure, and its small diameter The end of one side is provided with an external thread structure, and the side close to the external thread structure is provided with a smooth outer circumferential surface structure, and the outer circumferential surface of the large diameter side of the front matching rod is uniformly provided with two outer plane structures along the circumferential direction; The energized electrode sheet is a ring-shaped copper sheet provided with a lug structure; the ring-shaped piezoelectric ceramic sheet is 2 ring-shaped piezoelectric ceramic sheets of d ₃₃ excitation mode, and the 2 ring-shaped piezoelectric ceramic sheets are both Divided into two regions of polarization along the thickness direction, the insulating regions of the two ring-shaped piezoelectric ceramic sheets are arranged parallel to each other, the positive polarization surfaces of the two ring-shaped piezoelectric ceramic sheets are arranged opposite to the positive polarization surface, and the negative polarization surface and the positive polarization surface are arranged opposite to each other. The negative polarization surfaces are arranged oppositely; the rear matching rod is a cylindrical structure elastic body, and the center of one end is provided with an internal thread hole structure, and the other end surface is glued to the metal substrate for the pump; the insulating sleeve is An annular insulator, which is arranged on the smooth outer peripheral surface of the front matching rod; the rectangular piezoelectric ceramic sheets are two rectangular piezoelectric ceramic sheets in the d ₃₁ excitation mode, and they are all polarized along the thickness direction, so The deformation directions of the two rectangular piezoelectric ceramic sheets are all parallel to the central axis of the front matching rod, and the two rectangular piezoelectric ceramic sheets are glued to the outer plane structure of the front matching rod; The electric ceramic sheets are arranged at intervals on the insulating sleeve, and the energized wires of the energized electrode sheets and the rectangular piezoelectric ceramic sheets are drawn out through the wire holes on the front end cover; In the circular groove on the end surface of one side of the clamping block; a through-hole structure is provided at the center of the end surface of one side of the clamping block, and a circular groove structure is also provided on the end surface of one side of the clamping block, and one side of the clamping block The end surface is also provided with a sealing annular groove structure, the other end surface of the clamping block is provided with a circular groove structure, the other end surface of the clamping block is also provided with a sealing annular groove structure, the other side of the clamping block Four through-hole structures are also arranged around the end face. The metal base plate for the pump is a metal elastic body structure, arranged on the inner stepped circular surface of the front end cover, and fixedly installed between the front end cover and the clamping block by the support rubber ring, the metal base plate for the pump One end face is glued to the drive assembly of the pump. The front end cover is provided with an inner cavity structure, the inner cavity wall of the front end cover is provided with a wire hole structure, the end surface of one side of the front end cover is provided with an inner stepped ring surface structure, and the end surface of one side of the front end cover is also provided with a An annular groove structure, the end surface of the front end cover is also provided with a sealing annular groove structure, and the end surface of the other side of the front end cover is provided with four countersunk through hole structures.

The beneficial effect of the present invention is: applying an AC excitation electric signal to the valve stack and the pump drive assembly respectively excites them to generate telescopic deformation and centrifugal force, causing the volumes of the valve chamber and the pump chamber to change alternately, completing the suction and injection of the fluid. Under the reaction force of water spray, the propulsion motion output of the device is realized. The invention has technical advantages such as large driving force and high power density, and has broad application prospects in technical fields such as micro-injection, military detection, and underwater robots.

Description of drawings

Fig. 1 shows a cross-sectional view of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 2 is a side view of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Figure 3 is a top view of the end cover of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 4 shows the A-A sectional view of the end cover of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 5 shows a side view of the end cover of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 6 is a cross-sectional view of the cavity of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 7 is a partially enlarged view of the hydrophobic structure of the water outlet in the cavity of a patch sandwich longitudinal bending composite excitation passive water jet propulsion device proposed by the present invention;

Fig. 8 is a top view of the cavity of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 9 is a side view of the cavity of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 10 is a cross-sectional view of a pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 11 shows the front view of the front matching rod in the pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 12 is a side view of the front matching rod in the pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 13 is a schematic diagram of the layout of the annular piezoelectric ceramic sheet and the energized electrode sheet in the pump drive assembly of a patch sandwich longitudinal bending composite excitation passive type water jet propulsion device proposed by the present invention;

Fig. 14 is a cross-sectional view of the rear matching rod in the pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 15 is a side view of the rear matching rod in the pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 16 is a cross-sectional view of an insulating sleeve in a pump drive assembly of a patch sandwich longitudinal bending compound excitation passive type water jet propulsion device proposed by the present invention;

Fig. 17 is a front view of the clamping block of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Figure 18 is a B-B sectional view of the clamping block of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Figure 19 is a cross-sectional view of the front end cover of a patch sandwich longitudinal bending compound excitation passive water jet propulsion device proposed by the present invention;

Fig. 20 is a front view of the front end cover of a patch-sandwich longitudinal-bending compound-excited passive water jet propulsion device proposed by the present invention.

detailed description

Specific implementation manner 1: This implementation manner will be described with reference to FIG. 1 to FIG. 20 . This embodiment provides a specific implementation of a patch-sandwich longitudinal-bending compound-excited passive water jet propulsion device. The patch sandwich longitudinal bending composite excitation passive water jet propulsion device is mainly composed of a valve stack 1, a valve metal substrate 2, an end cover 3, a supporting rubber ring 4, a sealing ring 5, a cavity 6, and a valve umbrella Shaped valve 7, pump umbrella valve 8, fastening bolt 9, pump driving assembly 10, enlarged diaphragm 11, clamping block 12, pump metal substrate 13, front end cover 14 and fastening screw 15.

The valve stack 1 is a low-voltage stack piezoelectric ceramics model XP series manufactured by Harbin Core Tomorrow Technology Co., Ltd., one end of which is glued to the valve metal substrate 2 by epoxy resin, and the other side is The end is pasted on the inner cavity wall 3-1-1 of the end cover 3 by epoxy resin glue, so as to realize the fastening installation of the piezoelectric stack 1 for the valve; Lead out through the wire hole 3-2 on the end cover 3 to realize the access of the external excitation power supply.

The metal base plate 2 for the valve is a metal elastic body structure, arranged on the inner stepped circular surface 6-2 of the valve cavity 6, and fixedly installed between the end cover 3 and the cavity 6 by the support rubber ring 4, One end surface of the valve metal substrate 2 is fixedly connected to the valve stack 1 through epoxy glue.

The horizontal side of the end cover 3 is provided with an inner cavity 3-1 structure, which is used to realize the fixed installation of the valve stack 1 and the inner cavity wall 3-1-1 through epoxy resin glue; the inner cavity of the end cover 3 The wall 3-1-1 is provided with a wire hole 3-2 structure, which is used to realize the lead-out of the valve stack 1 energized wire 1-1; the horizontal side of the end cover 3 is also provided with a circular groove 3-3 structure , which is used to support the arrangement of the rubber ring 4, and realize the clamping and fastening installation of the metal substrate 2 for the valve; the horizontal side of the end cover 3 is also provided with a sealing ring groove 3-4 structure, which is used for the installation of the sealing ring 5 arranged to realize the sealing of the valve cavity 6-1; the horizontal side of the end cover 3 is also provided with four through holes 3-5 structures, which realize the fast connection with the cavity 6 through fastening bolts 9; the end cover 3 The side of the vertical side is provided with two internal threaded holes 3-6, which realize the fast connection with the front cover 14, the clamping block 12 and the enlarged diaphragm 11 through the fastening screw 15; the vertical side of the end cover 3 One side is also provided with a sealing annular groove 3-7 structure, which is used for the installation arrangement of the sealing ring 5 to realize the sealing of the pump cavity; the vertical side of the end cover 3 is also provided with a semicircular through hole 3-10 structure The inner surface 3-8 of the semicircular through hole 3-10 is adhesively sealed with one side of the cavity 6; the end surface 3-9 of the semicircular through hole 3-10 is connected with the other end cover 3 semicircular through hole 3-10 end face 3-9 adhesive sealing.

The supporting rubber ring 4 is an elastic body with a ring structure, which is respectively arranged in the ring groove 3-3 of the end cover 3, the ring groove 6-3 of the cavity 6, the ring groove 12-4 of the clamping block 12 and the In the annular groove 14 - 3 of the front end cover 14 , clamping and fastening installation of the metal substrate 2 for the valve and the metal substrate 13 for the pump are realized respectively.

The sealing ring 5 is an elastic body with a ring structure, which is respectively arranged in the sealing annular grooves 3-2 and 3-7 of the end cover 3, the sealing annular groove 6-4 of the cavity 6, and the sealing annular groove 12 of the clamping block 12 -3 and 12-5 and the sealing annular groove 14-4 of the front cover 14 are used to realize the sealing of the valve chamber 6-1, the pump chamber and the device.

The cavity 6 is provided with a valve cavity 6-1 structure, which forms a closed cavity with the metal substrate 2 for the valve, the umbrella valve 7 for the valve and the umbrella valve 8 for the pump, and is used to realize the suction of fluid; the cavity The body 6 is also provided with an inner stepped circular surface 6-2 structure, which is used to realize the installation arrangement of the metal substrate 2 for the valve; the cavity 6 is also provided with a circular groove 6-3 structure, which is used to support the rubber ring 4, realize the clamping and fastening installation of the metal substrate 2 for the valve; the cavity 6 is also provided with a sealing ring groove 6-4 structure, which is used for the installation and arrangement of the sealing ring 5, and realizes the sealing of the valve cavity 6-1. Sealing; the cavity 6 is also provided with a valve cavity water inlet 6-5 structure, which is used to realize the flow of fluid in the valve cavity 6-1; the cavity 6 is also provided with a pump cavity water inlet 6-6 structure, which It is used to realize the flow of fluid in the pump cavity; the valve cavity water inlet 6-5 and the pump cavity water inlet 6-6 in the cavity 6 are all provided with a valve seat 6-7 structure, which is used for the valve umbrella valve 7 and The installation arrangement of the pump umbrella valve 8; the cavity 6 is also provided with a funnel-shaped water outlet 6-8 structure, which is used to realize the ejection of high-pressure fluid; the inner wall of the water outlet 6-8 in the cavity 6 A hydrophobic structure 6-8-1 is provided, which is used to reduce the flow resistance of the fluid and realize high-efficiency operation of the device.

The umbrella valve 7 for the valve and the umbrella valve 8 for the pump are both rubber stop valves, the spool of which is fixedly installed, and the periphery is fully opened.

The pump drive assembly 10 includes a front matching rod 10-1, a energized electrode piece 10-2, an annular piezoelectric ceramic piece 10-3, a rear matching rod 10-4, an insulating sleeve 10-5 and a rectangular piezoelectric ceramic piece 10-6; the front matching rod 10-1 is a stepped cylindrical elastic body structure, and the end of the small diameter side of the front matching rod 10-1 is provided with an external thread 10-1-3 structure, which is used for matching with the rear The inner threaded hole 10-4-1 at the end of one side of the rod 10-4 is screwed and connected to realize the connection with the energized electrode sheet 10-2, the piezoelectric ceramic sheet 10-3, the rear matching rod 10-4 and the insulating sleeve 10- 5 clamping installation; the front matching rod 10-1 is provided with a smooth outer peripheral surface 10-1-2 structure on the side close to the external thread 10-1-3, which is used to realize the installation arrangement of the insulating sleeve 10-5 , the outer circumferential surface of the large diameter side of the front matching rod 10-1 is evenly provided with two outer planes 10-1-1 structures along the circumferential direction, which are used to realize two rectangular piezoelectric ceramic sheets 10 through epoxy resin glue -6 adhesive connection; the energized electrode sheet 10-2 is an annular copper sheet provided with a lug structure, which is used to realize the input of an external excitation power supply; the annular piezoelectric ceramic sheet 10-3 is 2 Sheet d is a ring-shaped piezoelectric ceramic sheet in the excitation mode of ₃₃ , and the two ring-shaped piezoelectric ceramic sheets 10-3 are divided into two regions of polarization along the thickness direction, and the two ring-shaped piezoelectric ceramic sheets 10-3 are polarized. The insulating regions are arranged parallel to each other, the positively polarized surfaces of the two annular piezoelectric ceramic sheets 10-3 are arranged opposite to the positively polarized surfaces, and the negatively polarized surfaces are arranged oppositely to the negatively polarized surfaces; the rear matching rod 10-4 is a cylinder Structural elastic body, the center of one side of the end is provided with an internal threaded hole 10-4-1 structure, which is used to screw and connect with the external thread 10-1-2 of the front matching rod 10-1, so as to realize the connection with the front matching rod 10 -1. The clamping installation of the energized electrode piece 10-2, the piezoelectric ceramic piece 10-3 and the insulating sleeve 10-5, the other side end surface of the rear matching rod 10-4 is connected with the pump metal by epoxy resin glue. The substrate 13 is tightly connected; the insulating sleeve 10-5 is an annular insulator, and the insulating sleeve 10-5 is arranged on the smooth outer peripheral surface 10-1-1 of the front matching rod 10-1; the The rectangular piezoelectric ceramic sheets 10-6 are two rectangular piezoelectric ceramic sheets in the d ₃₁ excitation mode, and they are all polarized along the thickness direction, and the deformation directions of the two rectangular piezoelectric ceramic sheets 10-6 are the same as those of the previous ones. The central axis of the matching rod 10-1 is parallel, and the two rectangular piezoelectric ceramic sheets 10-6 are adhesively connected to the outer plane 10-1-1 of the front matching rod 10-1; the energized electrode sheet 10-2 is connected to the The ring-shaped piezoelectric ceramic sheets 10-3 are arranged at intervals on the insulating sleeve 10-5; the energized wires of the energized electrode sheet 10-2 and the rectangular piezoelectric ceramic sheet 10-6 pass through the wire hole 14- on the front end cover 14. 5 leads.

The enlarged diaphragm 11 is a circular elastic body structure, which is arranged in a circular groove 12-2 on one side of the clamping block 12, and is connected with the front end cover 14, the clamping block 12 and the end cover by fastening screws 15. 3; the amplifying diaphragm 11 is used to amplify the mechanical deformation of the metal substrate 13 for the pump.

A through hole 12-1 structure is provided at the center of one side end surface of the clamping block 12; a circular groove 12-2 structure is also provided on one side end surface of the clamping block 12, which is used to realize the arrangement of the enlarged diaphragm 11 Installation; the end face of one side of the clamping block 12 is also provided with a sealing annular groove 12-3 structure, which is used for the installation and arrangement of the sealing ring 5 to realize the sealing of the pump cavity; the end face of the other side of the clamping block 12 is provided with The ring groove 12-4 structure is used to support the arrangement of the rubber ring 4 to realize the clamping and fastening installation of the metal substrate 13 for the pump; the other end surface of the clamping block 12 is also provided with a sealing ring groove 12-5 structure, which is used for the installation arrangement of the sealing ring 5 to realize the sealing of the device; the other side of the clamping block 12 is also provided with four through hole 12-6 structures around the end surface, which are used to realize the connection with the fastening screw 15 The fastening connection of the front end cover 14, the amplifying diaphragm 11 and the end cover 3.

The metal base plate 13 for the pump is a metal elastic body structure, arranged on the inner stepped circular surface 14-2 of the front end cover 14, and fixedly mounted on the contact between the front end cover 14 and the clamping block 12 through the support rubber ring 4 On the surface, one end surface of the pump metal substrate 13 is fixedly connected to the pump drive assembly 10 through epoxy glue.

The front end cover 14 is provided with an inner cavity 14-1 structure; the inner cavity wall 14-1-1 of the front end cover 14 is provided with a wire hole 14-5 structure, which is used to realize the connection of the electric wire of the pump drive assembly 10. Lead out; the end face of the front end cover 14 is provided with an inner stepped circular surface 14-2 structure, which is used to realize the installation and arrangement of the metal substrate 13 for the pump; the end face of the front end cover 14 is also provided with an annular groove 14 -3 structure, which is used to support the arrangement of the rubber ring 4, and realize the clamping and fastening installation of the metal substrate 13 for the pump; the end surface of the front end cover 14 is also provided with a sealing ring groove 14-4 structure, which is used for sealing The installation and arrangement of the ring 5 realizes the sealing of the device; the other side of the front end cover 14 is provided with four countersunk through holes 14-6 structures, which are used for the installation and arrangement of the fastening screws 15 to realize the connection with the clamping block 12 1. Enlarge the tight connection between the diaphragm 11 and the end cap 3 .

Specific implementation mode 2: This implementation mode provides a specific implementation scheme of a method for driving a patch-sandwich longitudinal-bending compound-excited passive water-jet propulsion device.

The specific implementation of the method for driving the patch-sandwich longitudinal-bending composite vibration-exciting passive water jet propulsion device is as follows: the valve uses the stack 1 to apply an AC excitation electric signal to generate shortening and deformation, so that the valve cavity 6- The volume of 1 increases, and the umbrella valve 7 for the valve is forced to open at this time, and the fluid flows into the valve cavity 6-1 through the water inlet 6-5 of the valve cavity; An excitation electric signal, the pump uses the driving assembly 10 to apply an AC excitation electric signal to generate a shaking head in one direction, and generate a centrifugal force in one direction, so that the volume of the valve chamber 6-1 becomes smaller, and the volume of the pump chamber becomes larger, At this time, the valve umbrella valve 7 is forced to close, the pump umbrella valve 8 is forced to open, and the fluid flows into the pump cavity through the pump cavity water inlet 6-6 to complete the primary water absorption process of the present invention; the pump drive assembly 10 Apply an AC excitation electric signal that causes it to shake the head in the opposite direction, and generate a centrifugal force in the opposite direction, so that the volume of the pump chamber becomes smaller. At this time, the umbrella valve 8 for the pump is forced to close, and the fluid is sprayed out through the water outlet 6-8 , complete a water spraying process of the present invention. The present invention realizes the propulsion motion output of the device under the reaction force of water spray.

The AC excitation electrical signal passed through the stack 1 for the valve is a sine wave or square wave periodic electrical signal of a certain frequency, and the two annular piezoelectric ceramic sheets 10-3 in the pump drive assembly 10 form an excitation group A1, and apply a sine wave periodic electrical signal of a certain frequency, the two rectangular piezoelectric ceramic sheets 10-6 in the pump drive assembly 10 constitute the excitation group A2, and apply a cosine wave periodic electrical signal of a certain frequency; The phase difference of the AC excitation electrical signals applied by the vibration excitation group A1 and the vibration excitation group A2 is 90 degrees or 270 degrees, and the phase difference of the AC excitation electrical signals applied by the vibration excitation group A1 and A2 is 90 degrees, respectively. degree and 270 degrees, can respectively realize the shaking head movement of the pump drive assembly 10 in two directions, and generate centrifugal force in two directions; the valve stack 1 and the pump drive assembly 10 communicate with the phase The difference is 180 degrees.

Claims (9)

1. A patch sandwich longitudinal bending compound excitation passive water jet propulsion device, which consists of a valve stack (1), a valve metal substrate (2), an end cover (3), a supporting rubber ring (4), a sealing Ring (5), cavity (6), umbrella valve for valve (7), umbrella valve for pump (8), fastening bolts (9), drive assembly for pump (10), amplifying diaphragm (11) , a clamping block (12), a pump metal base plate (13), a front cover (14) and a fastening screw (15). 2. The patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: the horizontal side of the end cover (3) is provided with an inner cavity (3-1) structure, the The inner cavity wall (3-1-1) of the end cover (3) is provided with a wire hole (3-2) structure, and the horizontal side of the end cover (3) is also provided with a ring groove (3-3) structure, so The horizontal side of the end cover (3) is also provided with a sealing ring groove (3-4) structure, the horizontal side of the end cover (3) is also provided with four through holes (3-5) structures, the end cover (3) ) is provided with two internal threaded holes (3-6) on one side of the vertical side, and the side of the vertical side of the end cover (3) is also provided with a sealing annular groove (3-7) structure, and the end cover (3) One side of the vertical side is also provided with a semicircular through hole (3-10) structure, the inner side (3-8) of the semicircular through hole (3-10) is glued and sealed with one side of the cavity (6), The end surface (3-9) of the semicircular through hole (3-10) is adhesively sealed with the end surface (3-9) of the semicircular through hole (3-10) of the other end cover (3). 3. The patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: the cavity (6) is provided with a valve cavity (6-1) structure, the cavity (6) is also provided with an inner stepped circular surface (6-2) structure, the cavity (6) is also provided with a circular groove (6-3) structure, and the cavity (6) is also provided with a sealing ring groove (6-4) structure, the cavity (6) is also provided with a valve cavity water inlet (6-5) structure, and the cavity (6) is also provided with a pump cavity water inlet (6-6) structure, The valve chamber water inlet (6-5) and the pump chamber water inlet (6-6) in the cavity (6) are both provided with a valve seat (6-7) structure, and the cavity (6) is also provided with a funnel shaped water outlet (6-8) structure, and the inner wall of the water outlet (6-8) in the cavity (6) is provided with a hydrophobic structure (6-8-1). 4. The patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: a through hole (12-1) is provided at the center of one end face of the clamping block (12) structure, the end surface of one side of the clamping block (12) is also provided with a circular groove (12-2) structure, and the end surface of one side of the clamping block (12) is also provided with a sealing annular groove (12-3) structure, The other end surface of the clamping block (12) is provided with an annular groove (12-4) structure, and the other end surface of the clamping block (12) is also provided with a sealing annular groove (12-5) structure, so Four through holes (12-6) are also arranged around the other end surface of the clamping block (12). 5. The patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: the front end cover (14) is provided with an inner cavity (14-1) structure, the front end cover (14) The inner cavity wall (14-1-1) is provided with a wire hole (14-5) structure, and the end face of the front end cover (14) is provided with an inner stepped circular surface (14-2) structure, so The end surface of the front end cover (14) is also provided with a ring groove (14-3) structure, and the end surface of the front end cover (14) is also provided with a sealing ring groove (14-4) structure, the front end cover ( 14) Four countersunk through-holes (14-6) are arranged on the other end surface. 6. The patch-sandwich longitudinal-bending composite vibration-exciting passive water jet propulsion device according to claim 1, characterized in that: the end of one side of the valve stack (1) is glued to the metal substrate (2) , the other end is adhesively connected to the inner cavity wall (3-1-1) of the end cover (3), and the valve uses the current conducting wire (1-1) of the stack (1) to pass through the end cover (3) lead out from the wire hole (3-2) on the 7. The patch-sandwich longitudinal-bending compound-excited passive water-jet propulsion device according to claim 1, characterized in that: the pump drive assembly (10) includes a front matching rod (10-1), a energized electrode piece (10-2), annular piezoelectric ceramic sheet (10-3), rear matching rod (10-4), insulating sleeve (10-5) and rectangular piezoelectric ceramic sheet (10-6); the front matching The rod (10-1) is a stepped cylindrical elastic body structure, the end of the small diameter side of the front matching rod (10-1) is provided with an external thread (10-1-3) structure, and the front matching rod (10- 1) A smooth outer circumferential surface (10-1-2) structure is provided on the side close to the external thread (10-1-3), and the outer circumferential surface on the large diameter side of the front matching rod (10-1) is uniform along the circumferential direction There are two outer plane (10-1-1) structures; the energized electrode sheet (10-2) is a circular copper sheet with a lug structure; the annular piezoelectric ceramic sheet (10-3) It is two ring-shaped piezoelectric ceramic sheets of d ₃₃ excitation mode, and the two ring-shaped piezoelectric ceramic sheets (10-3) are divided into two regions of polarization along the thickness direction, and the two ring-shaped piezoelectric ceramic sheets The insulating regions of (10-3) are arranged parallel to each other, the positive polarization surfaces of the two annular piezoelectric ceramic sheets (10-3) are arranged opposite to the positive polarization surfaces, and the negative polarization surfaces are arranged opposite to the negative polarization surfaces; The rear matching rod (10-4) is an elastic body with a cylindrical structure, and an internal threaded hole (10-4-1) structure is provided at the center of one end of the rear matching rod (10-4). The pump is glued to the metal substrate (13); the insulating sleeve (10-5) is an annular insulator, and the insulating sleeve (10-5) is arranged on the smooth outer surface of the front matching rod (10-1). On the circumferential surface (10-1-1); the rectangular piezoelectric ceramic sheet (10-6) is two rectangular piezoelectric ceramic sheets in the d ₃₁ excitation mode, and they are all polarized along the thickness direction, and the 2 The deformation directions of the rectangular piezoelectric ceramic sheets (10-6) are all parallel to the central axis of the front matching rod (10-1), and the two rectangular piezoelectric ceramic sheets (10-6) are connected to the front matching rod (10-1). 1) The outer plane (10-1-1) is adhesively connected; the energized electrode piece (10-2) and the annular piezoelectric ceramic piece (10-3) are arranged at intervals on the insulating sleeve (10-5) ; The energized wires of the energized electrode sheet (10-2) and the rectangular piezoelectric ceramic sheet (10-6) are drawn out through the wire hole (14-5) on the front end cover (14). 8. The patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: the valve metal substrate (2) is a metal elastic body structure, arranged in the valve chamber (6) on the inner stepped circular surface (6-2), and fixedly installed on the contact surface between the end cover (3) and the cavity (6) through the support rubber ring (4), the valve metal substrate (2) One end surface of one side is glued to the stack (1) for the valve; the metal base plate (13) for the pump is a metal elastic body structure, and is arranged on the inner stepped circular surface (14-2) of the front end cover (14) , one end surface of the pump metal substrate (13) is adhesively connected to the pump drive assembly (10). 9. A method for driving a patch sandwich longitudinal bending compound excitation passive water jet propulsion device according to claim 1, characterized in that: the patch sandwich longitudinal bending compound excitation passive water jet propulsion device The driving method is as follows: the valve stack (1) applies an AC excitation electric signal to cause shortening and deformation, so that the volume of the valve cavity (6-1) increases, and at this time, the valve umbrella valve (7) is activated. The fluid is forced to open, and the fluid flows into the valve chamber (6-1) through the water inlet (6-5) of the valve chamber; the valve uses the stack (1) to apply an AC excitation electric signal to cause elongation and deformation, and the pump drives The component (10) applies an AC excitation electric signal to generate a shaking head in one direction, and generates a centrifugal force in one direction, so that the volume of the valve chamber (6-1) becomes smaller and the volume of the pump chamber becomes larger. At this time, the valve umbrella The shaped valve (7) is forced to close, the pump umbrella valve (8) is forced to open, and the fluid flows into the pump chamber through the water inlet (6-6) of the pump chamber to complete a water absorption process; the pump drive assembly (10) Apply an AC excitation electric signal to make it shake the head in the opposite direction, and generate a centrifugal force in the opposite direction, so that the volume of the pump chamber becomes smaller. At this time, the umbrella valve (8) for the pump is forced to close, and the fluid passes through the water outlet (6- 8) Spray out to complete a water spraying process; The AC excitation electrical signal passed through the stack (1) for the valve is a sine wave or square wave periodic electrical signal of a certain frequency, and the two ring-shaped piezoelectric ceramic sheets (10- 3) Constitute the excitation group A1, and apply a sine wave periodic electrical signal of a certain frequency. The two rectangular piezoelectric ceramic sheets (10-6) in the pump drive assembly (10) constitute the excitation group A2, and apply A cosine wave periodic electrical signal of a certain frequency; the phase difference of the AC excitation electrical signals applied by the excitation group A1 and the excitation group A2 is 90 degrees or 270 degrees, and the phase difference of the AC excitation electrical signals applied by the excitation group A1 and the excitation group A2 When the phase difference of the AC excitation electric signal is 90 degrees and 270 degrees respectively, the shaking head movement in two directions of the pump drive assembly (10) can be realized respectively, and the centrifugal force in two directions can be generated; the valve stack (1) The phase difference between the AC excitation electric signal and the pump driving assembly (10) is 180 degrees.