CN204738948U - A Sandwich Type Longitudinal-Torsion Compound Vibration Active Water Jet Propulsion Device - Google Patents

Abstract

The utility model discloses a sandwich longitrorse complex excitation active type water -jet propulsion system to solve little, the low scheduling problem of power density of current piezoelectricity water -jet propulsion system drive power. The utility model discloses a for valve single -chip, for the valve metal substrate, end cover, support rubber circle, sealing washer, cavity, fastening bolt, pump chamber drive assembly, enlarge the diaphragm, press from both sides tight piece, metal substrate, front end housing and fastening screw for the pump, the cavity has valve pocket water inlet, pump chamber water inlet and pump chamber delivery port, and valve pocket water inlet and pump chamber water inlet have the valve to use respectively and the initiative disk seat is used to the pump, and the pump chamber delivery port has hydrophobic structural. Apply the signal of telecommunication in single -chip for the valve and for pump drive assembly, produce flexible the deformation and centrifugal force respectively, make valve pocket and pump chamber alternation, realize the fluid inhale with the blowout, under water spray reaction force, realize the propulsion of device. The utility model discloses have advantages such as drive power is big, power density height, have wide application prospect in fields such as trace injection, military survey.

Description

A Sandwich Type Longitudinal-Torsion Compound Vibration Active Water Jet Propulsion Device

technical field

The utility model relates to a sandwich type vertical torsion compound excitation active water spray propulsion device, which belongs to the technical field of water spray 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 CN 200989293 Y, 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 chamber, a pressure pump Composed of electric vibrators, the piezoelectric vibrator is used 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 The axis of the valve cavity corresponding to the channel and the axis of the outlet flow channel are in the same plane and are perpendicular to each other. The rubber stop valve is used as the inlet valve at the inlet, and the outlet is the spout. There is no valve at the spout, and it is normally connected to the outside world. The inner cavity of the pump composed of the nozzle and the nozzle is an unclosed cavity; the Chinese utility model patent "Piezoelectric Water Jet Propulsion Device", the authorized announcement number is CN 202574604 U, and the authorized announcement date is May 07, 2012. Piezoelectric water jet 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 chamber with the upper cover, and there is a sealing ring between the upper cover and the pump body , the pump body is provided with water inlet 1 and water inlet 2, and a valve cavity is provided between the piezoelectric vibrator and the two water inlets, and the umbrella-shaped rubber valve 1 and the umbrella-shaped rubber valve are fixedly connected to the water inlet 1 and the water inlet 2 respectively. Valve two, a water outlet spout is arranged between the two water inlets, and the water outlet spout 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 the current piezoelectric water jet propulsion device such as small driving force and low power density, the utility model discloses a sandwich type longitudinal-torsion compound excitation active water jet propulsion device.

The technical scheme adopted by the utility model is: the sandwich type vertical torsion compound excitation active water spray propulsion device is composed of a valve single wafer, a valve metal substrate, an end cover, a supporting rubber ring, a sealing ring, a cavity , fastening bolts, pump drive components, enlarged diaphragm, clamping block, metal base plate for pumps, front end cover and fastening screws.

The single chip for the valve is a circular piezoelectric ceramic sheet in the d ₃₃ excitation mode, which is polarized along the thickness direction. The end face of the single chip for the valve is glued to the metal substrate for the valve. The live wires are led out through the wire holes on the end cap. The metal base plate for the valve 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 by clamping the supporting rubber ring. The horizontal side of the end cover 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 circular groove structure, and the horizontal side of the end cover is also provided with A sealing ring groove structure is provided, four through-hole structures are provided on the horizontal side of the end cover, two internal thread hole structures are provided on one side of the vertical side of the end cover, and one side of the vertical side of the end cover A sealing annular groove structure is also provided, and a semicircular through hole structure is also provided on one side of the vertical side of the end cover. The inner surface of the semicircular through hole is glued and sealed with one side of the cavity, and the semicircular through hole The end face of the through hole is adhesively sealed with the end face of the semicircular through hole of the other end cover. 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 water inlet structure of the valve cavity, and the water inlet of the valve cavity is provided with an active valve seat structure for a valve, and the cavity is also provided with a water inlet structure of the pump cavity, and the cavity is also provided with a water outlet of the pump cavity The water outlet of the pump chamber is provided with an active valve seat structure for the pump, and the inner wall of the water outlet of the pump chamber is provided with a hydrophobic structure. The drive assembly for the pump includes a front matching rod, a energized electrode sheet, a piezoelectric ceramic sheet, a rear matching rod and an insulating sleeve; Thread structure, a smooth outer peripheral surface structure is provided on the side close to the external thread structure; the energized electrode sheet is an annular copper sheet provided with a lug structure; the piezoelectric ceramic sheet is 4 annular piezoelectric ceramics The two piezoelectric ceramic sheets arranged on one side of the four piezoelectric ceramic sheets adopt the d ₁₅ excitation mode, which are all polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface, and the four piezoelectric ceramic sheets are arranged opposite to each other. The two piezoelectric ceramic sheets arranged on the other side of the piezoelectric ceramic sheet adopt the d ₃₃ excitation mode, which are all polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface; the rear matching rod is a cylinder Structural elastic body, the center of one side of the end is provided with an internal threaded hole structure, and the other side of the end surface is glued to the metal substrate for the pump; the insulating sleeve is a ring-shaped insulator, which is arranged on the smooth surface of the front matching rod. On the outer peripheral surface; the energized electrode piece and the annular piezoelectric ceramic piece are arranged on the insulating sleeve at intervals, and the energized wire of the energized electrode piece is led out through the wire hole on the front end cover. The amplifying diaphragm is a circular elastic body structure, and is arranged in a circular groove on one end surface of the clamping block. A through-hole structure is provided at the center of one side end surface of the clamping block, a circular groove structure is also provided on one side end surface of the clamping block, and a sealing annular groove structure is also provided on the one side end surface of the clamping block. The other end surface of the clamping block is provided with an annular groove structure, the other end surface of the clamping block is also provided with a sealing annular groove structure, and four through hole structures are arranged around the other end surface of the clamping block. 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 on one side of the front end cover is also provided with a sealing annular groove structure, and the end surface on the other side of the front end cover is provided with four countersunk through hole structures.

The beneficial effects of the utility model are: applying an AC excitation electric signal to the single wafer for the valve and the drive assembly for the pump respectively excites them to produce longitudinal expansion and contraction deformation and centrifugal force, so that the volumes of the valve cavity and the pump cavity change alternately, and the suction and pumping of the fluid are completed. Jet out, under the reaction force of water spray, realize the propulsion motion output of the device. The utility model 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 is a cross-sectional view of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Figure 2 is a side view of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the utility model;

Fig. 3 is a top view of the end cover of a sandwich-type vertical-torsion compound excitation active water jet propulsion device proposed by the utility model;

Fig. 4 is an A-A cross-sectional view of the end cover of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Fig. 5 is a side view of the end cover of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

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

Figure 7 is a partially enlarged view of the hydrophobic structure of the water outlet in the cavity of a sandwich type longitudinal torsion compound excitation active water jet propulsion device proposed by the present invention;

Fig. 8 is a top view of the cavity of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Fig. 9 is a side view of the cavity of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Figure 10 is a cross-sectional view of a pump drive assembly of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Figure 11 is a front view of the front matching rod in the pump drive assembly of a sandwich type longitudinal torsion compound excitation active type water jet propulsion device proposed by the present invention;

Figure 12 is a side view of the front matching rod in the pump drive assembly of a sandwich type longitudinal torsion compound excitation active 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 sandwich type longitudinal torsion compound excitation active water jet propulsion device proposed by the present invention;

Figure 14 is a cross-sectional view of the rear matching rod in the pump drive assembly of a sandwich-type longitudinal-torsion compound excitation active 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 sandwich-type longitudinal-torsion compound excitation active 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 sandwich type longitudinal torsion compound excitation active type water jet propulsion device proposed by the present invention;

Fig. 17 is a front view of a clamping block of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the present invention;

Figure 18 is a B-B cross-sectional view of the clamping block of a sandwich type longitudinal torsion compound excitation active water jet propulsion device proposed by the present invention;

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

Fig. 20 is a front view of the front end cover of a sandwich-type longitudinal-torsion compound excitation active water jet propulsion device proposed by the utility model.

Detailed ways

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 sandwich-type vertical-torsion composite vibration-exciting active water jet propulsion device. The sandwich-type vertical-torsion composite vibration-excited active water jet propulsion device is mainly composed of a valve single chip 1, a valve metal substrate 2, an end cover 3, a supporting rubber ring 4, a sealing ring 5, a cavity 6, a fastening The bolt 7, the drive assembly 8 for the pump, the enlarged diaphragm 9, the clamping block 10, the metal base plate 11 for the pump, the front end cover 12 and the fastening screw 13 are composed.

The single chip 1 for the valve is a circular piezoelectric ceramic sheet in the d33 _excitation mode, which is polarized along the thickness direction. The energized wire 1-1 of the single chip 1 for the valve is drawn out through the wire hole 3-2 on the end cover 3 to realize the input of an 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 single chip 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 single chip 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 single wafer 1 energized wire 1-1; the horizontal side of the end cover 3 is also provided with a ring 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 the fastening bolts 7; 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 12, the clamping block 10 and the enlarged diaphragm 9 through the fastening screw 13; 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 10-4 of the clamping block 10 and the In the annular groove 12 - 3 of the front end cover 12 , clamping and fastening installation of the metal substrate 2 for the valve and the metal substrate 11 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 10 of the clamping block 10. -3 and 10-5 and the sealing annular groove 12-4 of the front cover 12 are used to realize the sealing of the valve cavity 6-1, the pump cavity 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 and the single chip 1 for the valve, and is used to realize the suction of the fluid; the cavity 6 is also provided with an inner stepped circle The ring surface 6-2 structure is used to realize the installation and arrangement of the metal substrate 2 for the valve; the cavity 6 is also provided with a ring groove 6-3 structure, which is used to support the arrangement of the rubber ring 4 to realize the installation and arrangement of the valve metal substrate 2. The clamping and fastening installation of the substrate 2; the cavity 6 is also provided with a sealing annular 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; the cavity 6 is also There is a valve chamber water inlet 6-5 structure, which is used to realize the flow of fluid in the valve chamber 6-1; the valve chamber water inlet 6-5 is provided with a valve active valve seat 6-6 structure, which is used to communicate with the valve The active valve for the valve is formed by the single crystal 1 and the metal substrate 2 for the valve; the cavity 6 is also provided with a pump cavity water inlet 6-7 structure, which is used to realize the circulation of the fluid in the pump cavity; the cavity 6 is also provided with The structure of the water outlet 6-9 of the pump chamber is used to realize the ejection of high-pressure fluid; the inner wall of the water outlet 6-9 of the pump chamber is provided with a hydrophobic structure 6-9-1, which is used to reduce the flow resistance of the fluid; The water outlet 6-9 of the pump cavity is also provided with a pump active valve seat 6-8, which is used to form a pump active valve with the pump drive assembly 8, the amplifying diaphragm 9 and the pump metal substrate 11.

The pump drive assembly 8 includes a front matching rod 8-1, a energized electrode sheet 8-2, a piezoelectric ceramic sheet 8-3, a rear matching rod 8-4 and an insulating sleeve 8-5; the front matching rod 8 -1 is a stepped cylindrical elastic body structure, and the end of the small diameter side of the front matching rod 8-1 is provided with an external thread 8-1-3 structure, which is used to connect with the inner thread of the end of the rear matching rod 8-4. The threaded hole 8-4-1 is screwed and connected to realize the clamping installation with the energized electrode sheet 8-2, the piezoelectric ceramic sheet 8-3, the rear matching rod 8-4 and the insulating sleeve 8-5; the front matching The side of the rod 8-1 close to the external thread 8-1-3 is provided with a smooth outer peripheral surface 8-1-2 structure, which is used to realize the installation arrangement of the insulating sleeve 8-5; the energized electrode piece 8-2 is A ring-shaped copper sheet with a lug structure is used to realize the input of an external excitation power supply; the ring-shaped piezoelectric ceramic sheet 8-3 is 4 ring-shaped piezoelectric ceramic sheets, and the 4 ring-shaped piezoelectric ceramic sheets The two piezoelectric ceramic sheets 8-3 arranged on one side of the sheet 8-3 adopt the d ₁₅ excitation mode, which are all polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface, and the four piezoelectric ceramic sheets The two piezoelectric ceramic sheets 8-3 arranged on the other side of the ceramic sheet 8-3 adopt the d ₃₃ excitation mode, which are all polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface; the post-matching The rod 8-4 is a cylindrical structure elastic body, and the center of one side end is provided with an internal threaded hole 8-4-1 structure, which is used for screwing connection with the external thread 8-1-2 of the front matching rod 8-1, Realize the clamping installation with the front matching rod 8-1, the energized electrode sheet 8-2, the piezoelectric ceramic sheet 8-3 and the insulating sleeve 8-5, and the other end face of the rear matching rod 8-4 passes through the epoxy The resin glue is firmly connected with the metal substrate 11 for the pump; the insulating sleeve 8-5 is an annular insulator, and the insulating sleeve 8-5 is arranged on the smooth outer peripheral surface 8-1 of the front matching rod 8-1 -1; the energized electrode sheet 8-2 and the annular piezoelectric ceramic sheet 8-3 are arranged at intervals on the insulating sleeve 8-5; the energized wire of the energized electrode sheet 8-2 passes through the front end cover 12 Wire hole 12-5 leads.

The enlarged diaphragm 9 is a circular elastic body structure, which is arranged in a circular groove 10-2 on one side of the clamping block 10, and is connected with the front end cover 12, the clamping block 10 and the end cover by fastening screws 13. 3; the amplifying diaphragm 9 is used to amplify the mechanical deformation of the metal substrate 11 for the pump.

A through hole 10-1 structure is provided at the center of one side end surface of the clamping block 10; a circular groove 10-2 structure is also provided on one side end surface of the clamping block 10, which is used to realize the arrangement of the enlarged diaphragm 9 Installation; the end face of one side of the clamping block 10 is also provided with a sealing annular groove 10-3 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 10 is provided with The ring groove 10-4 structure is used to support the arrangement of the rubber ring 4 to realize the clamping and fastening installation of the metal substrate 11 for the pump; the other end surface of the clamping block 10 is also provided with a sealing ring groove 10-5 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 10 is also provided with four through hole 10-6 structures around the end surface, which are used to realize the connection with the fastening screw 13 The fastening connection of the front end cover 12, the amplifying diaphragm 9 and the end cover 3.

The metal base plate 11 for the pump is a metal elastic body structure, arranged on the inner stepped circular surface 12-2 of the front end cover 12, and is clamped and fixed by the supporting rubber ring 4 on the contact between the front end cover 12 and the clamping block 10 On the surface, one end surface of the pump metal substrate 11 is fixedly connected to the pump drive assembly 8 through epoxy glue.

The front end cover 12 is provided with an inner cavity 12-1 structure; the inner cavity wall 12-1-1 of the front end cover 12 is fixedly connected with the pump drive assembly 8 through epoxy resin glue; the front end cover 12 The inner cavity wall 12-1-1 is provided with a wire hole 12-5 structure, which is used to realize the extraction of the electric wire 8-1 of the pump drive assembly 8; the end surface of the front end cover 12 is provided with an inner stepped circular ring surface 12-2 structure, which is used to realize the installation and arrangement of the metal base plate 11 for the pump; the end surface of the front end cover 12 is also provided with a circular groove 12-3 structure, which is used to support the arrangement of the rubber ring 4, and realize the pump. The clamping and fastening installation of the metal substrate 11; the end surface of one side of the front end cover 12 is also provided with a sealing annular groove 12-4 structure, which is used for the installation and arrangement of the sealing ring 5 to realize the sealing of the device; the front end cover 12 is another Four countersunk through-holes 12-6 are provided on one end surface, which are used for the installation and arrangement of fastening screws 13 to realize the fast connection with the clamping block 10, the enlarged diaphragm 9 and the end cover 3.

Specific implementation mode 2: This implementation mode provides a specific implementation scheme of a driving method for a sandwich-type vertical-torsion compound excitation active water jet propulsion device.

The specific embodiment of the driving method of the sandwich-type longitudinal-torsion compound excitation active water jet propulsion device is: the valve uses a single chip 1 to apply an AC excitation electric signal to generate shortening and deformation, so that the valve cavity 6-1 The volume of the valve cavity increases, and the fluid flows into the valve cavity 6-1 through the water inlet 6-5 of the valve cavity; the valve uses a single chip 1 to apply an AC excitation electric signal to cause elongation and deformation, and the pump uses a drive assembly 8 to apply It generates an AC excitation electric signal that shakes the head in one direction, and generates a centrifugal force in one direction, so that the volume of the valve chamber 6-1 becomes smaller, the volume of the pump chamber becomes larger, and the fluid flows into the pump chamber through the water inlet 6-7 of the pump chamber. Complete the primary water absorption process of the present utility model; the pump uses the driving assembly 8 to apply an AC excitation electric signal that causes the shaking head to move in the other direction, and generates centrifugal force in the other direction, so that the volume of the pump cavity becomes smaller, and the fluid passes through the outlet. Water port 6-9 sprays out, finishes a water spraying process of the present utility model. The utility model realizes the propulsion motion output of the device under the reaction force of water spray.

The AC excitation electrical signal passed by the single chip 1 for the valve is a sine wave or square wave periodic electrical signal of a certain frequency, and the pump uses two ring-shaped pressure rings of the d15 excitation mode arranged on one side of the driving assembly ₈ . The electric ceramic sheet 8-3 constitutes the excitation group A1, and applies a sine wave periodic electrical signal of a certain frequency, and the pump uses two piezoelectric ceramic sheets 8 in the d ₃₃ excitation mode arranged on the other side of the drive assembly 8 -3 Constitute the excitation group A2, and apply a cosine wave periodic electrical signal of the same frequency; the phase difference of the AC excitation electrical signal applied by the excitation group A1 and the excitation group A2 is 90 degrees or 270 degrees, and the excitation When the phase differences of the AC excitation electrical signals applied by the group A1 and the excitation group A2 are 90 degrees and 270 degrees respectively, the two-direction shaking head movements of the pump drive assembly 8 can be realized respectively, and centrifugal forces in two directions can be generated; The phase difference between the single chip 1 for the valve and the driving assembly 8 for the pump is 180 degrees with the AC excitation electric signal.

Claims (8)

1. A sandwich-type longitudinal-torsion composite vibration-excited active water jet propulsion device, which consists of a valve single chip (1), a valve metal substrate (2), an end cover (3), a supporting rubber ring (4), and a sealing ring (5), cavity (6), fastening bolts (7), pump drive assembly (8), enlarged diaphragm (9), clamping block (10), metal base plate for pump (11), front end cover ( 12) and fastening screws (13). 2. A sandwich-type longitudinal-torsion composite vibration-exciting active 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, so 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, The horizontal side of the end cover (3) is also provided with a sealing ring groove (3-4) structure, and the horizontal side of the end cover (3) is also provided with four through holes (3-5) structures, the end cover ( 3) There are two internal threaded holes (3-6) on one side of the vertical side, and a sealing annular groove (3-7) structure is also provided on the side of the vertical side of the end cover (3), and the end cover (3) ) is also provided with a semicircular through hole (3-10) structure on one side of the vertical side, and the inner side (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 adhesively sealed with the end surface (3-9) of the semicircular through hole (3-10) of the other end cover (3). 3. A sandwich-type vertical-torsion composite vibration-excited active water jet propulsion device according to claim 1, characterized in that: the cavity (6) is provided with a valve cavity (6-1) structure, and the cavity The body (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 The structure of the annular groove (6-4), the cavity (6) is also provided with the structure of the water inlet (6-5) of the valve cavity, and the water inlet (6-5) of the valve cavity is provided with the active valve seat (6 -6) structure, the cavity (6) is also provided with a pump chamber water outlet (6-9) structure, and the inner wall of the pump chamber water outlet (6-9) is provided with a hydrophobic structure (6-9-1), The water outlet (6-9) of the pump cavity is also provided with an active valve seat (6-8) structure for the pump. 4. A sandwich-type longitudinal-torsion composite vibration-exciting active water jet propulsion device according to claim 1, characterized in that: a through hole (10-1 ) structure, the end surface of the clamping block (10) is also provided with a circular groove (10-2) structure, and the end surface of the clamping block (10) is also provided with a sealing ring groove (10-3) structure , the other end surface of the clamping block (10) is provided with an annular groove (10-4) structure, and the other end surface of the clamping block (10) is also provided with a sealing annular groove (10-5) structure, Four through holes (10-6) are also arranged around the other end surface of the clamping block (10). 5. A sandwich-type longitudinal-torsion composite vibration-excited active water jet propulsion device according to claim 1, characterized in that: the front end cover (12) is provided with an inner cavity (12-1) structure, and the front end The inner cavity wall (12-1-1) of the cover (12) is adhesively connected with the pump piezoelectric stack (8), and the inner cavity wall (12-1-1) of the front end cover (12) is provided with wire holes (12-5) structure, the end surface of the front end cover (12) is provided with an inner stepped circular surface (12-2) structure, and the end surface of the front end cover (12) is also provided with an annular groove (12- 3) structure, the end surface of the front end cover (12) is also provided with a sealing ring groove (12-4) structure, and the other end surface of the front end cover (12) is provided with four countersunk through holes (12-6 )structure. 6. A sandwich-type vertical-torsion composite vibration-excited active water jet propulsion device according to claim 1, characterized in that: the single chip (1) for the valve is a circular piezoelectric ceramic chip in d ₃₃ excitation mode , polarized along the thickness direction, the valve single chip (1) side end surface is glued to the valve metal substrate (2), the electric wire (1-1) of the valve single chip (1) passes through the end The wire hole (3-2) on the cover (3) leads out. 7. A sandwich-type vertical-torsion composite vibration-excited active water jet propulsion device according to claim 1, characterized in that: the pump drive assembly (8) includes a front matching rod (8-1), an electrified electrode sheet (8-2), piezoelectric ceramic sheet (8-3), rear matching rod (8-4) and insulating sleeve (8-5); the front matching rod (8-1) is a stepped cylindrical elastic Body structure, the end of the small diameter side of the front matching rod (8-1) is provided with an external thread (8-1-3) structure, and the front matching rod (8-1) is close to the external thread (8-1-3 ) is provided with a smooth outer peripheral surface (8-1-2) structure, the energized electrode sheet (8-2) is an annular copper sheet provided with a lug structure, and the annular piezoelectric ceramic sheet (8 -3) are 4 circular piezoelectric ceramic sheets, and the 2 piezoelectric ceramic sheets (8-3) arranged on one side of the 4 piezoelectric ceramic sheets (8-3) adopt the d ₁₅ excitation mode, They are all polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface, and the two piezoelectric ceramic sheets (8-3) arranged on the other side of the four piezoelectric ceramic sheets (8-3) adopt d ₃₃ excitation modes, all of which are polarized along the thickness direction, and the positive polarization surface is arranged opposite to the positive polarization surface; the rear matching rod (8-4) is a cylindrical elastic body, and the center of one side end is provided with Internally threaded hole (8-4-1) structure, the other end surface of the rear matching rod (8-4) is glued to the metal base plate (11) for the pump; the insulating sleeve (8-5) is round An annular insulator, the insulating sleeve (8-5) is arranged on the smooth outer peripheral surface (8-1-1) of the front matching rod (8-1); The piezoelectric ceramic sheets (8-3) are arranged at intervals on the insulating sleeve (8-5); the energized wire of the energized electrode sheet (8-2) passes through the wire hole (12-5) on the front cover (12) ) elicited. 8. A sandwich-type vertical-torsion composite vibration-excited active 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 cavity (6 ), and fixed on the contact surface between the end cover (3) and the cavity (6) by clamping and fixing the supporting rubber ring (4), the valve metal substrate (2 ) is adhesively connected to the valve single chip (1); the metal base plate (11) for the pump is a metal elastic body structure, and is arranged on the inner stepped circular surface (12-2) of the front end cover (12) Above, one end surface of the pump metal substrate (11) is adhesively connected to the pump drive assembly (8).